Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1988-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c SS |
22 | #include "defs.h" |
23 | #include "gdb_string.h" | |
24 | #include <ctype.h> | |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
1ff9c3d6 | 39 | #include "gdb_assert.h" |
6867ae3e | 40 | #include "observer.h" |
a77053c2 | 41 | #include "solib.h" |
37a105a1 DJ |
42 | #include "cli/cli-decode.h" |
43 | #include "cli/cli-setshow.h" | |
424163ea | 44 | #include "target-descriptions.h" |
c906108c | 45 | |
7a292a7a | 46 | #include <ctype.h> |
9846de1b | 47 | #include <sys/time.h> |
c906108c | 48 | |
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 | 58 | #include "remote-fileio.h" |
a6b151f1 | 59 | #include "gdb/fileio.h" |
3e88cf8d | 60 | #include "gdb_stat.h" |
dc146f7c | 61 | #include "xml-support.h" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
35b1e5cc SS |
65 | #include "tracepoint.h" |
66 | #include "ax.h" | |
67 | #include "ax-gdb.h" | |
d1feda86 | 68 | #include "agent.h" |
35b1e5cc | 69 | |
0df8b418 | 70 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
71 | static char *target_buf; |
72 | static long target_buf_size; | |
35b1e5cc | 73 | |
6765f3e5 DJ |
74 | /* The size to align memory write packets, when practical. The protocol |
75 | does not guarantee any alignment, and gdb will generate short | |
76 | writes and unaligned writes, but even as a best-effort attempt this | |
77 | can improve bulk transfers. For instance, if a write is misaligned | |
78 | relative to the target's data bus, the stub may need to make an extra | |
79 | round trip fetching data from the target. This doesn't make a | |
80 | huge difference, but it's easy to do, so we try to be helpful. | |
81 | ||
82 | The alignment chosen is arbitrary; usually data bus width is | |
83 | important here, not the possibly larger cache line size. */ | |
84 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
85 | ||
23860348 | 86 | /* Prototypes for local functions. */ |
6426a772 JM |
87 | static void cleanup_sigint_signal_handler (void *dummy); |
88 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 89 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
90 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
91 | int forever); | |
6426a772 | 92 | |
a14ed312 KB |
93 | static void handle_remote_sigint (int); |
94 | static void handle_remote_sigint_twice (int); | |
95 | static void async_remote_interrupt (gdb_client_data); | |
96 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 97 | |
a14ed312 | 98 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 99 | |
316f2060 | 100 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_open (char *name, int from_tty); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 105 | |
75c99385 | 106 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 107 | |
a14ed312 | 108 | static void remote_close (int quitting); |
c906108c | 109 | |
136d6dae | 110 | static void remote_mourn (struct target_ops *ops); |
c906108c | 111 | |
a14ed312 | 112 | static void extended_remote_restart (void); |
c906108c | 113 | |
136d6dae | 114 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 115 | |
a14ed312 | 116 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 117 | |
6d820c5c | 118 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 119 | |
a14ed312 | 120 | static int readchar (int timeout); |
c906108c | 121 | |
7d85a9c0 | 122 | static void remote_kill (struct target_ops *ops); |
c906108c | 123 | |
a14ed312 | 124 | static int tohex (int nib); |
c906108c | 125 | |
75c99385 PA |
126 | static int remote_can_async_p (void); |
127 | ||
128 | static int remote_is_async_p (void); | |
129 | ||
130 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
131 | void *context), void *context); | |
132 | ||
136d6dae | 133 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt (int signo); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
79d7f229 PA |
141 | static void set_general_thread (struct ptid ptid); |
142 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
94cc34af | 156 | static void remote_stop (ptid_t); |
c906108c | 157 | |
a14ed312 | 158 | static int ishex (int ch, int *val); |
c906108c | 159 | |
a14ed312 | 160 | static int stubhex (int ch); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
a14ed312 | 168 | static void print_packet (char *); |
c906108c | 169 | |
a14ed312 | 170 | static void compare_sections_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void packet_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 175 | |
39f77062 | 176 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 177 | |
a14ed312 | 178 | static void remote_find_new_threads (void); |
c906108c | 179 | |
79d7f229 | 180 | static void record_currthread (ptid_t currthread); |
c906108c | 181 | |
30559e10 | 182 | static int fromhex (int a); |
c906108c | 183 | |
00bf0b85 | 184 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 185 | |
00bf0b85 | 186 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 187 | |
a14ed312 | 188 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 189 | |
a14ed312 | 190 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 191 | |
5a2468f5 | 192 | struct packet_config; |
5a2468f5 | 193 | |
a14ed312 | 194 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 195 | |
d471ea57 | 196 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 197 | |
bb572ddd DJ |
198 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
199 | struct cmd_list_element *c); | |
200 | ||
201 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
202 | int from_tty, | |
203 | struct cmd_list_element *c, | |
204 | const char *value); | |
205 | ||
82f73884 PA |
206 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
207 | static ptid_t read_ptid (char *buf, char **obuf); | |
208 | ||
d914c394 SS |
209 | static void remote_set_permissions (void); |
210 | ||
d5551862 | 211 | struct remote_state; |
00bf0b85 | 212 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 213 | |
00bf0b85 SS |
214 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
215 | ||
216 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
217 | ||
c8d104ad PA |
218 | static void remote_query_supported (void); |
219 | ||
220 | static void remote_check_symbols (struct objfile *objfile); | |
221 | ||
a14ed312 | 222 | void _initialize_remote (void); |
c906108c | 223 | |
74531fed PA |
224 | struct stop_reply; |
225 | static struct stop_reply *stop_reply_xmalloc (void); | |
226 | static void stop_reply_xfree (struct stop_reply *); | |
227 | static void do_stop_reply_xfree (void *arg); | |
228 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
229 | static void push_stop_reply (struct stop_reply *); | |
230 | static void remote_get_pending_stop_replies (void); | |
231 | static void discard_pending_stop_replies (int pid); | |
232 | static int peek_stop_reply (ptid_t ptid); | |
233 | ||
234 | static void remote_async_inferior_event_handler (gdb_client_data); | |
235 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
236 | ||
d3fd5342 PA |
237 | static void remote_terminal_ours (void); |
238 | ||
d962ef82 DJ |
239 | static int remote_read_description_p (struct target_ops *target); |
240 | ||
176a6961 | 241 | static void remote_console_output (char *msg); |
dde08ee1 | 242 | |
b775012e LM |
243 | static int remote_supports_cond_breakpoints (void); |
244 | ||
74531fed PA |
245 | /* The non-stop remote protocol provisions for one pending stop reply. |
246 | This is where we keep it until it is acknowledged. */ | |
247 | ||
248 | static struct stop_reply *pending_stop_reply = NULL; | |
249 | ||
a6b151f1 DJ |
250 | /* For "remote". */ |
251 | ||
252 | static struct cmd_list_element *remote_cmdlist; | |
253 | ||
bb572ddd DJ |
254 | /* For "set remote" and "show remote". */ |
255 | ||
256 | static struct cmd_list_element *remote_set_cmdlist; | |
257 | static struct cmd_list_element *remote_show_cmdlist; | |
258 | ||
ea9c271d DJ |
259 | /* Description of the remote protocol state for the currently |
260 | connected target. This is per-target state, and independent of the | |
261 | selected architecture. */ | |
262 | ||
263 | struct remote_state | |
264 | { | |
265 | /* A buffer to use for incoming packets, and its current size. The | |
266 | buffer is grown dynamically for larger incoming packets. | |
267 | Outgoing packets may also be constructed in this buffer. | |
268 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
269 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
270 | packets. */ | |
271 | char *buf; | |
272 | long buf_size; | |
be2a5f71 | 273 | |
1e51243a PA |
274 | /* True if we're going through initial connection setup (finding out |
275 | about the remote side's threads, relocating symbols, etc.). */ | |
276 | int starting_up; | |
277 | ||
be2a5f71 DJ |
278 | /* If we negotiated packet size explicitly (and thus can bypass |
279 | heuristics for the largest packet size that will not overflow | |
280 | a buffer in the stub), this will be set to that packet size. | |
281 | Otherwise zero, meaning to use the guessed size. */ | |
282 | long explicit_packet_size; | |
2d717e4f DJ |
283 | |
284 | /* remote_wait is normally called when the target is running and | |
285 | waits for a stop reply packet. But sometimes we need to call it | |
286 | when the target is already stopped. We can send a "?" packet | |
287 | and have remote_wait read the response. Or, if we already have | |
288 | the response, we can stash it in BUF and tell remote_wait to | |
289 | skip calling getpkt. This flag is set when BUF contains a | |
290 | stop reply packet and the target is not waiting. */ | |
291 | int cached_wait_status; | |
a6f3e723 SL |
292 | |
293 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
294 | expect acks from each other. The connection is assumed to be | |
295 | reliable. */ | |
296 | int noack_mode; | |
82f73884 PA |
297 | |
298 | /* True if we're connected in extended remote mode. */ | |
299 | int extended; | |
300 | ||
301 | /* True if the stub reported support for multi-process | |
302 | extensions. */ | |
303 | int multi_process_aware; | |
e24a49d8 PA |
304 | |
305 | /* True if we resumed the target and we're waiting for the target to | |
306 | stop. In the mean time, we can't start another command/query. | |
307 | The remote server wouldn't be ready to process it, so we'd | |
308 | timeout waiting for a reply that would never come and eventually | |
309 | we'd close the connection. This can happen in asynchronous mode | |
310 | because we allow GDB commands while the target is running. */ | |
311 | int waiting_for_stop_reply; | |
74531fed PA |
312 | |
313 | /* True if the stub reports support for non-stop mode. */ | |
314 | int non_stop_aware; | |
315 | ||
316 | /* True if the stub reports support for vCont;t. */ | |
317 | int support_vCont_t; | |
782b2b07 SS |
318 | |
319 | /* True if the stub reports support for conditional tracepoints. */ | |
320 | int cond_tracepoints; | |
3a29589a | 321 | |
3788aec7 LM |
322 | /* True if the stub reports support for target-side breakpoint |
323 | conditions. */ | |
324 | int cond_breakpoints; | |
325 | ||
7a697b8d SS |
326 | /* True if the stub reports support for fast tracepoints. */ |
327 | int fast_tracepoints; | |
328 | ||
0fb4aa4b PA |
329 | /* True if the stub reports support for static tracepoints. */ |
330 | int static_tracepoints; | |
331 | ||
1e4d1764 YQ |
332 | /* True if the stub reports support for installing tracepoint while |
333 | tracing. */ | |
334 | int install_in_trace; | |
335 | ||
d5551862 SS |
336 | /* True if the stub can continue running a trace while GDB is |
337 | disconnected. */ | |
338 | int disconnected_tracing; | |
339 | ||
d248b706 KY |
340 | /* True if the stub reports support for enabling and disabling |
341 | tracepoints while a trace experiment is running. */ | |
342 | int enable_disable_tracepoints; | |
343 | ||
3065dfb6 SS |
344 | /* True if the stub can collect strings using tracenz bytecode. */ |
345 | int string_tracing; | |
346 | ||
3a29589a DJ |
347 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
348 | responded to that. */ | |
349 | int ctrlc_pending_p; | |
ea9c271d DJ |
350 | }; |
351 | ||
dc146f7c VP |
352 | /* Private data that we'll store in (struct thread_info)->private. */ |
353 | struct private_thread_info | |
354 | { | |
355 | char *extra; | |
356 | int core; | |
357 | }; | |
358 | ||
359 | static void | |
360 | free_private_thread_info (struct private_thread_info *info) | |
361 | { | |
362 | xfree (info->extra); | |
363 | xfree (info); | |
364 | } | |
365 | ||
82f73884 PA |
366 | /* Returns true if the multi-process extensions are in effect. */ |
367 | static int | |
368 | remote_multi_process_p (struct remote_state *rs) | |
369 | { | |
901f9912 | 370 | return rs->multi_process_aware; |
82f73884 PA |
371 | } |
372 | ||
ea9c271d DJ |
373 | /* This data could be associated with a target, but we do not always |
374 | have access to the current target when we need it, so for now it is | |
375 | static. This will be fine for as long as only one target is in use | |
376 | at a time. */ | |
377 | static struct remote_state remote_state; | |
378 | ||
379 | static struct remote_state * | |
0b83947e | 380 | get_remote_state_raw (void) |
ea9c271d DJ |
381 | { |
382 | return &remote_state; | |
383 | } | |
384 | ||
385 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 386 | |
ad10f812 AC |
387 | struct packet_reg |
388 | { | |
389 | long offset; /* Offset into G packet. */ | |
390 | long regnum; /* GDB's internal register number. */ | |
391 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 392 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 393 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 394 | at present. */ |
1cf3db46 | 395 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 396 | at present. */ |
ad10f812 AC |
397 | }; |
398 | ||
ea9c271d | 399 | struct remote_arch_state |
d01949b6 | 400 | { |
ad10f812 AC |
401 | /* Description of the remote protocol registers. */ |
402 | long sizeof_g_packet; | |
b323314b AC |
403 | |
404 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 405 | (making an array gdbarch_num_regs in size). */ |
b323314b | 406 | struct packet_reg *regs; |
ad10f812 | 407 | |
d01949b6 AC |
408 | /* This is the size (in chars) of the first response to the ``g'' |
409 | packet. It is used as a heuristic when determining the maximum | |
410 | size of memory-read and memory-write packets. A target will | |
411 | typically only reserve a buffer large enough to hold the ``g'' | |
412 | packet. The size does not include packet overhead (headers and | |
23860348 | 413 | trailers). */ |
d01949b6 AC |
414 | long actual_register_packet_size; |
415 | ||
416 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 417 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
418 | long remote_packet_size; |
419 | }; | |
420 | ||
35b1e5cc SS |
421 | long sizeof_pkt = 2000; |
422 | ||
423 | /* Utility: generate error from an incoming stub packet. */ | |
424 | static void | |
425 | trace_error (char *buf) | |
426 | { | |
427 | if (*buf++ != 'E') | |
428 | return; /* not an error msg */ | |
429 | switch (*buf) | |
430 | { | |
431 | case '1': /* malformed packet error */ | |
432 | if (*++buf == '0') /* general case: */ | |
433 | error (_("remote.c: error in outgoing packet.")); | |
434 | else | |
435 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
436 | strtol (buf, NULL, 16)); | |
437 | case '2': | |
438 | error (_("trace API error 0x%s."), ++buf); | |
439 | default: | |
440 | error (_("Target returns error code '%s'."), buf); | |
441 | } | |
442 | } | |
443 | ||
444 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
445 | static char * | |
446 | remote_get_noisy_reply (char **buf_p, | |
447 | long *sizeof_buf) | |
448 | { | |
449 | do /* Loop on reply from remote stub. */ | |
450 | { | |
451 | char *buf; | |
a744cf53 | 452 | |
0df8b418 | 453 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
454 | getpkt (buf_p, sizeof_buf, 0); |
455 | buf = *buf_p; | |
ad91cd99 | 456 | if (buf[0] == 'E') |
35b1e5cc | 457 | trace_error (buf); |
dde08ee1 PA |
458 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
459 | { | |
460 | ULONGEST ul; | |
461 | CORE_ADDR from, to, org_to; | |
462 | char *p, *pp; | |
463 | int adjusted_size = 0; | |
464 | volatile struct gdb_exception ex; | |
465 | ||
466 | p = buf + strlen ("qRelocInsn:"); | |
467 | pp = unpack_varlen_hex (p, &ul); | |
468 | if (*pp != ';') | |
cb91c06a | 469 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
470 | from = ul; |
471 | ||
472 | p = pp + 1; | |
a9cbf802 | 473 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
474 | to = ul; |
475 | ||
476 | org_to = to; | |
477 | ||
478 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
479 | { | |
480 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
481 | } | |
482 | if (ex.reason >= 0) | |
483 | { | |
484 | adjusted_size = to - org_to; | |
485 | ||
bba74b36 | 486 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
487 | putpkt (buf); |
488 | } | |
489 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
490 | { | |
491 | /* Propagate memory errors silently back to the target. | |
492 | The stub may have limited the range of addresses we | |
493 | can write to, for example. */ | |
494 | putpkt ("E01"); | |
495 | } | |
496 | else | |
497 | { | |
498 | /* Something unexpectedly bad happened. Be verbose so | |
499 | we can tell what, and propagate the error back to the | |
500 | stub, so it doesn't get stuck waiting for a | |
501 | response. */ | |
502 | exception_fprintf (gdb_stderr, ex, | |
503 | _("warning: relocating instruction: ")); | |
504 | putpkt ("E01"); | |
505 | } | |
506 | } | |
ad91cd99 | 507 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
508 | remote_console_output (buf + 1); /* 'O' message from stub */ |
509 | else | |
0df8b418 | 510 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
511 | } |
512 | while (1); | |
513 | } | |
3c3bea1c | 514 | |
d01949b6 AC |
515 | /* Handle for retreving the remote protocol data from gdbarch. */ |
516 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
517 | ||
ea9c271d DJ |
518 | static struct remote_arch_state * |
519 | get_remote_arch_state (void) | |
d01949b6 | 520 | { |
1cf3db46 | 521 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
522 | } |
523 | ||
0b83947e DJ |
524 | /* Fetch the global remote target state. */ |
525 | ||
526 | static struct remote_state * | |
527 | get_remote_state (void) | |
528 | { | |
529 | /* Make sure that the remote architecture state has been | |
530 | initialized, because doing so might reallocate rs->buf. Any | |
531 | function which calls getpkt also needs to be mindful of changes | |
532 | to rs->buf, but this call limits the number of places which run | |
533 | into trouble. */ | |
534 | get_remote_arch_state (); | |
535 | ||
536 | return get_remote_state_raw (); | |
537 | } | |
538 | ||
74ca34ce DJ |
539 | static int |
540 | compare_pnums (const void *lhs_, const void *rhs_) | |
541 | { | |
542 | const struct packet_reg * const *lhs = lhs_; | |
543 | const struct packet_reg * const *rhs = rhs_; | |
544 | ||
545 | if ((*lhs)->pnum < (*rhs)->pnum) | |
546 | return -1; | |
547 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
548 | return 0; | |
549 | else | |
550 | return 1; | |
551 | } | |
552 | ||
c21236dc PA |
553 | static int |
554 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 555 | { |
74ca34ce | 556 | int regnum, num_remote_regs, offset; |
74ca34ce | 557 | struct packet_reg **remote_regs; |
ea9c271d | 558 | |
4a22f64d | 559 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 560 | { |
c21236dc | 561 | struct packet_reg *r = ®s[regnum]; |
baef701f | 562 | |
4a22f64d | 563 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
564 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
565 | r->pnum = -1; | |
566 | else | |
567 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
568 | ||
b323314b | 569 | r->regnum = regnum; |
74ca34ce DJ |
570 | } |
571 | ||
572 | /* Define the g/G packet format as the contents of each register | |
573 | with a remote protocol number, in order of ascending protocol | |
574 | number. */ | |
575 | ||
4a22f64d | 576 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 577 | * sizeof (struct packet_reg *)); |
f57d151a | 578 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 579 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 580 | regnum++) |
c21236dc PA |
581 | if (regs[regnum].pnum != -1) |
582 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 583 | |
74ca34ce DJ |
584 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
585 | compare_pnums); | |
586 | ||
587 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
588 | { | |
589 | remote_regs[regnum]->in_g_packet = 1; | |
590 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 591 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
592 | } |
593 | ||
c21236dc PA |
594 | return offset; |
595 | } | |
596 | ||
597 | /* Given the architecture described by GDBARCH, return the remote | |
598 | protocol register's number and the register's offset in the g/G | |
599 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
600 | If the target does not have a mapping for REGNUM, return false, | |
601 | otherwise, return true. */ | |
602 | ||
603 | int | |
604 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
605 | int *pnum, int *poffset) | |
606 | { | |
607 | int sizeof_g_packet; | |
608 | struct packet_reg *regs; | |
609 | struct cleanup *old_chain; | |
610 | ||
611 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
612 | ||
613 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
614 | old_chain = make_cleanup (xfree, regs); | |
615 | ||
616 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
617 | ||
618 | *pnum = regs[regnum].pnum; | |
619 | *poffset = regs[regnum].offset; | |
620 | ||
621 | do_cleanups (old_chain); | |
622 | ||
623 | return *pnum != -1; | |
624 | } | |
625 | ||
626 | static void * | |
627 | init_remote_state (struct gdbarch *gdbarch) | |
628 | { | |
629 | struct remote_state *rs = get_remote_state_raw (); | |
630 | struct remote_arch_state *rsa; | |
631 | ||
632 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
633 | ||
634 | /* Use the architecture to build a regnum<->pnum table, which will be | |
635 | 1:1 unless a feature set specifies otherwise. */ | |
636 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
637 | gdbarch_num_regs (gdbarch), | |
638 | struct packet_reg); | |
639 | ||
74ca34ce DJ |
640 | /* Record the maximum possible size of the g packet - it may turn out |
641 | to be smaller. */ | |
c21236dc | 642 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 643 | |
0df8b418 | 644 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
645 | remote stubs have a hardwired buffer size of 400 bytes |
646 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
647 | as the maximum packet-size to ensure that the packet and an extra | |
648 | NUL character can always fit in the buffer. This stops GDB | |
649 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
650 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
651 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 652 | |
ea9c271d DJ |
653 | /* This one is filled in when a ``g'' packet is received. */ |
654 | rsa->actual_register_packet_size = 0; | |
655 | ||
656 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
657 | default, adjust the size accordingly. Remember that each byte is |
658 | encoded as two characters. 32 is the overhead for the packet | |
659 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 660 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 661 | little. */ |
ea9c271d DJ |
662 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
663 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 664 | |
ea9c271d DJ |
665 | /* Make sure that the packet buffer is plenty big enough for |
666 | this architecture. */ | |
667 | if (rs->buf_size < rsa->remote_packet_size) | |
668 | { | |
669 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 670 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 671 | } |
6d820c5c | 672 | |
ea9c271d DJ |
673 | return rsa; |
674 | } | |
675 | ||
676 | /* Return the current allowed size of a remote packet. This is | |
677 | inferred from the current architecture, and should be used to | |
678 | limit the length of outgoing packets. */ | |
679 | static long | |
680 | get_remote_packet_size (void) | |
681 | { | |
be2a5f71 | 682 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
683 | struct remote_arch_state *rsa = get_remote_arch_state (); |
684 | ||
be2a5f71 DJ |
685 | if (rs->explicit_packet_size) |
686 | return rs->explicit_packet_size; | |
687 | ||
ea9c271d | 688 | return rsa->remote_packet_size; |
d01949b6 AC |
689 | } |
690 | ||
ad10f812 | 691 | static struct packet_reg * |
ea9c271d | 692 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 693 | { |
1cf3db46 | 694 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
695 | return NULL; |
696 | else | |
ad10f812 | 697 | { |
ea9c271d | 698 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 699 | |
b323314b AC |
700 | gdb_assert (r->regnum == regnum); |
701 | return r; | |
ad10f812 | 702 | } |
ad10f812 AC |
703 | } |
704 | ||
705 | static struct packet_reg * | |
ea9c271d | 706 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 707 | { |
b323314b | 708 | int i; |
a744cf53 | 709 | |
1cf3db46 | 710 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 711 | { |
ea9c271d | 712 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 713 | |
b323314b AC |
714 | if (r->pnum == pnum) |
715 | return r; | |
ad10f812 AC |
716 | } |
717 | return NULL; | |
d01949b6 AC |
718 | } |
719 | ||
3c3bea1c GS |
720 | /* FIXME: graces/2002-08-08: These variables should eventually be |
721 | bound to an instance of the target object (as in gdbarch-tdep()), | |
722 | when such a thing exists. */ | |
723 | ||
724 | /* This is set to the data address of the access causing the target | |
725 | to stop for a watchpoint. */ | |
726 | static CORE_ADDR remote_watch_data_address; | |
727 | ||
94e08568 | 728 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
729 | static int remote_stopped_by_watchpoint_p; |
730 | ||
c906108c SS |
731 | static struct target_ops remote_ops; |
732 | ||
733 | static struct target_ops extended_remote_ops; | |
734 | ||
6426a772 JM |
735 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
736 | ``forever'' still use the normal timeout mechanism. This is | |
737 | currently used by the ASYNC code to guarentee that target reads | |
738 | during the initial connect always time-out. Once getpkt has been | |
739 | modified to return a timeout indication and, in turn | |
740 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 741 | this can go away. */ |
6426a772 JM |
742 | static int wait_forever_enabled_p = 1; |
743 | ||
9a7071a8 JB |
744 | /* Allow the user to specify what sequence to send to the remote |
745 | when he requests a program interruption: Although ^C is usually | |
746 | what remote systems expect (this is the default, here), it is | |
747 | sometimes preferable to send a break. On other systems such | |
748 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
749 | is required in order to interrupt the execution. */ | |
750 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
751 | const char interrupt_sequence_break[] = "BREAK"; | |
752 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 753 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
754 | { |
755 | interrupt_sequence_control_c, | |
756 | interrupt_sequence_break, | |
757 | interrupt_sequence_break_g, | |
758 | NULL | |
759 | }; | |
760 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
761 | ||
762 | static void | |
763 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
764 | struct cmd_list_element *c, | |
765 | const char *value) | |
766 | { | |
767 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
768 | fprintf_filtered (file, | |
769 | _("Send the ASCII ETX character (Ctrl-c) " | |
770 | "to the remote target to interrupt the " | |
771 | "execution of the program.\n")); | |
772 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
773 | fprintf_filtered (file, | |
774 | _("send a break signal to the remote target " | |
775 | "to interrupt the execution of the program.\n")); | |
776 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
777 | fprintf_filtered (file, | |
778 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
779 | "the remote target to interrupt the execution " | |
780 | "of Linux kernel.\n")); | |
781 | else | |
782 | internal_error (__FILE__, __LINE__, | |
783 | _("Invalid value for interrupt_sequence_mode: %s."), | |
784 | interrupt_sequence_mode); | |
785 | } | |
6426a772 | 786 | |
9a7071a8 JB |
787 | /* This boolean variable specifies whether interrupt_sequence is sent |
788 | to the remote target when gdb connects to it. | |
789 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
790 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
791 | static int interrupt_on_connect = 0; | |
c906108c | 792 | |
9a7071a8 JB |
793 | /* This variable is used to implement the "set/show remotebreak" commands. |
794 | Since these commands are now deprecated in favor of "set/show remote | |
795 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
796 | static int remote_break; |
797 | ||
9a7071a8 JB |
798 | static void |
799 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
800 | { | |
801 | if (remote_break) | |
802 | interrupt_sequence_mode = interrupt_sequence_break; | |
803 | else | |
804 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
805 | } | |
806 | ||
807 | static void | |
808 | show_remotebreak (struct ui_file *file, int from_tty, | |
809 | struct cmd_list_element *c, | |
810 | const char *value) | |
811 | { | |
812 | } | |
813 | ||
c906108c SS |
814 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
815 | remote_open knows that we don't have a file open when the program | |
816 | starts. */ | |
819cc324 | 817 | static struct serial *remote_desc = NULL; |
c906108c | 818 | |
c906108c SS |
819 | /* This variable sets the number of bits in an address that are to be |
820 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 821 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
822 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
823 | initial implementation of remote.c restricted the address sent in | |
824 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
825 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
826 | address was never sent. Since fixing this bug may cause a break in | |
827 | some remote targets this variable is principly provided to | |
23860348 | 828 | facilitate backward compatibility. */ |
c906108c SS |
829 | |
830 | static int remote_address_size; | |
831 | ||
75c99385 PA |
832 | /* Temporary to track who currently owns the terminal. See |
833 | remote_terminal_* for more details. */ | |
6426a772 JM |
834 | |
835 | static int remote_async_terminal_ours_p; | |
836 | ||
2d717e4f DJ |
837 | /* The executable file to use for "run" on the remote side. */ |
838 | ||
839 | static char *remote_exec_file = ""; | |
840 | ||
11cf8741 | 841 | \f |
11cf8741 | 842 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
843 | memory read/write packet. MIN (rsa->remote_packet_size, |
844 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 845 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
846 | (speed up transfers). The variables ``preferred_*'' (the user |
847 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 848 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
849 | |
850 | struct memory_packet_config | |
851 | { | |
852 | char *name; | |
853 | long size; | |
854 | int fixed_p; | |
855 | }; | |
856 | ||
857 | /* Compute the current size of a read/write packet. Since this makes | |
858 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
859 | ||
860 | static long | |
861 | get_memory_packet_size (struct memory_packet_config *config) | |
862 | { | |
d01949b6 | 863 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
864 | struct remote_arch_state *rsa = get_remote_arch_state (); |
865 | ||
11cf8741 JM |
866 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
867 | law?) that some hosts don't cope very well with large alloca() | |
868 | calls. Eventually the alloca() code will be replaced by calls to | |
869 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 870 | be lifted or removed. */ |
11cf8741 JM |
871 | #ifndef MAX_REMOTE_PACKET_SIZE |
872 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
873 | #endif | |
3de11b2e | 874 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 875 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 876 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
877 | #endif |
878 | long what_they_get; | |
879 | if (config->fixed_p) | |
880 | { | |
881 | if (config->size <= 0) | |
882 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
883 | else | |
884 | what_they_get = config->size; | |
885 | } | |
886 | else | |
887 | { | |
ea9c271d | 888 | what_they_get = get_remote_packet_size (); |
23860348 | 889 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
890 | if (config->size > 0 |
891 | && what_they_get > config->size) | |
892 | what_they_get = config->size; | |
be2a5f71 DJ |
893 | |
894 | /* Limit it to the size of the targets ``g'' response unless we have | |
895 | permission from the stub to use a larger packet size. */ | |
896 | if (rs->explicit_packet_size == 0 | |
897 | && rsa->actual_register_packet_size > 0 | |
898 | && what_they_get > rsa->actual_register_packet_size) | |
899 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
900 | } |
901 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
902 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
903 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
904 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
905 | |
906 | /* Make sure there is room in the global buffer for this packet | |
907 | (including its trailing NUL byte). */ | |
908 | if (rs->buf_size < what_they_get + 1) | |
909 | { | |
910 | rs->buf_size = 2 * what_they_get; | |
911 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
912 | } | |
913 | ||
11cf8741 JM |
914 | return what_they_get; |
915 | } | |
916 | ||
0df8b418 | 917 | /* Update the size of a read/write packet. If they user wants |
23860348 | 918 | something really big then do a sanity check. */ |
11cf8741 JM |
919 | |
920 | static void | |
921 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
922 | { | |
923 | int fixed_p = config->fixed_p; | |
924 | long size = config->size; | |
a744cf53 | 925 | |
11cf8741 | 926 | if (args == NULL) |
8a3fe4f8 | 927 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
928 | else if (strcmp (args, "hard") == 0 |
929 | || strcmp (args, "fixed") == 0) | |
930 | fixed_p = 1; | |
931 | else if (strcmp (args, "soft") == 0 | |
932 | || strcmp (args, "limit") == 0) | |
933 | fixed_p = 0; | |
934 | else | |
935 | { | |
936 | char *end; | |
a744cf53 | 937 | |
11cf8741 JM |
938 | size = strtoul (args, &end, 0); |
939 | if (args == end) | |
8a3fe4f8 | 940 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
941 | #if 0 |
942 | /* Instead of explicitly capping the size of a packet to | |
943 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
944 | instead allowed to set the size to something arbitrarily | |
23860348 | 945 | large. */ |
11cf8741 | 946 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 947 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
948 | #endif |
949 | } | |
23860348 | 950 | /* Extra checks? */ |
11cf8741 JM |
951 | if (fixed_p && !config->fixed_p) |
952 | { | |
e2e0b3e5 AC |
953 | if (! query (_("The target may not be able to correctly handle a %s\n" |
954 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 955 | config->name, size)) |
8a3fe4f8 | 956 | error (_("Packet size not changed.")); |
11cf8741 | 957 | } |
23860348 | 958 | /* Update the config. */ |
11cf8741 JM |
959 | config->fixed_p = fixed_p; |
960 | config->size = size; | |
961 | } | |
962 | ||
963 | static void | |
964 | show_memory_packet_size (struct memory_packet_config *config) | |
965 | { | |
a3f17187 | 966 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 967 | if (config->fixed_p) |
a3f17187 | 968 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
969 | get_memory_packet_size (config)); |
970 | else | |
a3f17187 | 971 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
972 | get_memory_packet_size (config)); |
973 | } | |
974 | ||
975 | static struct memory_packet_config memory_write_packet_config = | |
976 | { | |
977 | "memory-write-packet-size", | |
978 | }; | |
979 | ||
980 | static void | |
981 | set_memory_write_packet_size (char *args, int from_tty) | |
982 | { | |
983 | set_memory_packet_size (args, &memory_write_packet_config); | |
984 | } | |
985 | ||
986 | static void | |
987 | show_memory_write_packet_size (char *args, int from_tty) | |
988 | { | |
989 | show_memory_packet_size (&memory_write_packet_config); | |
990 | } | |
991 | ||
992 | static long | |
993 | get_memory_write_packet_size (void) | |
994 | { | |
995 | return get_memory_packet_size (&memory_write_packet_config); | |
996 | } | |
997 | ||
998 | static struct memory_packet_config memory_read_packet_config = | |
999 | { | |
1000 | "memory-read-packet-size", | |
1001 | }; | |
1002 | ||
1003 | static void | |
1004 | set_memory_read_packet_size (char *args, int from_tty) | |
1005 | { | |
1006 | set_memory_packet_size (args, &memory_read_packet_config); | |
1007 | } | |
1008 | ||
1009 | static void | |
1010 | show_memory_read_packet_size (char *args, int from_tty) | |
1011 | { | |
1012 | show_memory_packet_size (&memory_read_packet_config); | |
1013 | } | |
1014 | ||
1015 | static long | |
1016 | get_memory_read_packet_size (void) | |
1017 | { | |
1018 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1019 | |
11cf8741 JM |
1020 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1021 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1022 | increased beyond this. */ |
1023 | if (size > get_remote_packet_size ()) | |
1024 | size = get_remote_packet_size (); | |
11cf8741 JM |
1025 | return size; |
1026 | } | |
1027 | ||
11cf8741 | 1028 | \f |
5a2468f5 | 1029 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1030 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1031 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1032 | |
1033 | enum packet_support | |
1034 | { | |
1035 | PACKET_SUPPORT_UNKNOWN = 0, | |
1036 | PACKET_ENABLE, | |
1037 | PACKET_DISABLE | |
1038 | }; | |
1039 | ||
5a2468f5 JM |
1040 | struct packet_config |
1041 | { | |
bb572ddd DJ |
1042 | const char *name; |
1043 | const char *title; | |
7f19b9a2 | 1044 | enum auto_boolean detect; |
5a2468f5 JM |
1045 | enum packet_support support; |
1046 | }; | |
1047 | ||
d471ea57 | 1048 | /* Analyze a packet's return value and update the packet config |
23860348 | 1049 | accordingly. */ |
d471ea57 AC |
1050 | |
1051 | enum packet_result | |
1052 | { | |
1053 | PACKET_ERROR, | |
1054 | PACKET_OK, | |
1055 | PACKET_UNKNOWN | |
1056 | }; | |
1057 | ||
5a2468f5 | 1058 | static void |
d471ea57 | 1059 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1060 | { |
d471ea57 AC |
1061 | switch (config->detect) |
1062 | { | |
7f19b9a2 | 1063 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1064 | config->support = PACKET_ENABLE; |
1065 | break; | |
7f19b9a2 | 1066 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1067 | config->support = PACKET_DISABLE; |
1068 | break; | |
7f19b9a2 | 1069 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1070 | config->support = PACKET_SUPPORT_UNKNOWN; |
1071 | break; | |
1072 | } | |
5a2468f5 JM |
1073 | } |
1074 | ||
1075 | static void | |
fba45db2 | 1076 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1077 | { |
1078 | char *support = "internal-error"; | |
a744cf53 | 1079 | |
5a2468f5 JM |
1080 | switch (config->support) |
1081 | { | |
1082 | case PACKET_ENABLE: | |
1083 | support = "enabled"; | |
1084 | break; | |
1085 | case PACKET_DISABLE: | |
1086 | support = "disabled"; | |
1087 | break; | |
1088 | case PACKET_SUPPORT_UNKNOWN: | |
1089 | support = "unknown"; | |
1090 | break; | |
1091 | } | |
1092 | switch (config->detect) | |
1093 | { | |
7f19b9a2 | 1094 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1095 | printf_filtered (_("Support for the `%s' packet " |
1096 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1097 | config->name, support); |
5a2468f5 | 1098 | break; |
7f19b9a2 AC |
1099 | case AUTO_BOOLEAN_TRUE: |
1100 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1101 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1102 | config->name, support); | |
8e248173 | 1103 | break; |
5a2468f5 JM |
1104 | } |
1105 | } | |
1106 | ||
1107 | static void | |
bb572ddd DJ |
1108 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1109 | const char *title, int legacy) | |
d471ea57 | 1110 | { |
5a2468f5 JM |
1111 | char *set_doc; |
1112 | char *show_doc; | |
d471ea57 | 1113 | char *cmd_name; |
3ed07be4 | 1114 | |
5a2468f5 JM |
1115 | config->name = name; |
1116 | config->title = title; | |
7f19b9a2 | 1117 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1118 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1119 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1120 | name, title); | |
3e43a32a MS |
1121 | show_doc = xstrprintf ("Show current use of remote " |
1122 | "protocol `%s' (%s) packet", | |
b435e160 | 1123 | name, title); |
d471ea57 | 1124 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1125 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1126 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1127 | &config->detect, set_doc, |
1128 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1129 | set_remote_protocol_packet_cmd, |
1130 | show_remote_protocol_packet_cmd, | |
1131 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1132 | /* The command code copies the documentation strings. */ |
1133 | xfree (set_doc); | |
1134 | xfree (show_doc); | |
23860348 | 1135 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1136 | if (legacy) |
1137 | { | |
1138 | char *legacy_name; | |
a744cf53 | 1139 | |
b435e160 | 1140 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1141 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1142 | &remote_set_cmdlist); |
d471ea57 | 1143 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1144 | &remote_show_cmdlist); |
d471ea57 | 1145 | } |
5a2468f5 JM |
1146 | } |
1147 | ||
d471ea57 | 1148 | static enum packet_result |
a76d924d | 1149 | packet_check_result (const char *buf) |
5a2468f5 | 1150 | { |
d471ea57 | 1151 | if (buf[0] != '\0') |
5a2468f5 | 1152 | { |
d471ea57 | 1153 | /* The stub recognized the packet request. Check that the |
23860348 | 1154 | operation succeeded. */ |
a76d924d DJ |
1155 | if (buf[0] == 'E' |
1156 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1157 | && buf[3] == '\0') | |
1158 | /* "Enn" - definitly an error. */ | |
1159 | return PACKET_ERROR; | |
1160 | ||
1161 | /* Always treat "E." as an error. This will be used for | |
1162 | more verbose error messages, such as E.memtypes. */ | |
1163 | if (buf[0] == 'E' && buf[1] == '.') | |
1164 | return PACKET_ERROR; | |
1165 | ||
1166 | /* The packet may or may not be OK. Just assume it is. */ | |
1167 | return PACKET_OK; | |
1168 | } | |
1169 | else | |
1170 | /* The stub does not support the packet. */ | |
1171 | return PACKET_UNKNOWN; | |
1172 | } | |
1173 | ||
1174 | static enum packet_result | |
1175 | packet_ok (const char *buf, struct packet_config *config) | |
1176 | { | |
1177 | enum packet_result result; | |
1178 | ||
1179 | result = packet_check_result (buf); | |
1180 | switch (result) | |
1181 | { | |
1182 | case PACKET_OK: | |
1183 | case PACKET_ERROR: | |
1184 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1185 | switch (config->support) |
1186 | { | |
1187 | case PACKET_SUPPORT_UNKNOWN: | |
1188 | if (remote_debug) | |
1189 | fprintf_unfiltered (gdb_stdlog, | |
1190 | "Packet %s (%s) is supported\n", | |
1191 | config->name, config->title); | |
1192 | config->support = PACKET_ENABLE; | |
1193 | break; | |
1194 | case PACKET_DISABLE: | |
8e65ff28 | 1195 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1196 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1197 | break; |
1198 | case PACKET_ENABLE: | |
1199 | break; | |
1200 | } | |
a76d924d DJ |
1201 | break; |
1202 | case PACKET_UNKNOWN: | |
23860348 | 1203 | /* The stub does not support the packet. */ |
d471ea57 AC |
1204 | switch (config->support) |
1205 | { | |
1206 | case PACKET_ENABLE: | |
7f19b9a2 | 1207 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1208 | /* If the stub previously indicated that the packet was |
23860348 | 1209 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1210 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1211 | config->name, config->title); |
1212 | else | |
23860348 | 1213 | /* The user set it wrong. */ |
8a3fe4f8 | 1214 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1215 | config->name, config->title); |
1216 | break; | |
1217 | case PACKET_SUPPORT_UNKNOWN: | |
1218 | if (remote_debug) | |
1219 | fprintf_unfiltered (gdb_stdlog, | |
1220 | "Packet %s (%s) is NOT supported\n", | |
1221 | config->name, config->title); | |
1222 | config->support = PACKET_DISABLE; | |
1223 | break; | |
1224 | case PACKET_DISABLE: | |
1225 | break; | |
1226 | } | |
a76d924d | 1227 | break; |
5a2468f5 | 1228 | } |
a76d924d DJ |
1229 | |
1230 | return result; | |
5a2468f5 JM |
1231 | } |
1232 | ||
444abaca DJ |
1233 | enum { |
1234 | PACKET_vCont = 0, | |
1235 | PACKET_X, | |
1236 | PACKET_qSymbol, | |
1237 | PACKET_P, | |
1238 | PACKET_p, | |
1239 | PACKET_Z0, | |
1240 | PACKET_Z1, | |
1241 | PACKET_Z2, | |
1242 | PACKET_Z3, | |
1243 | PACKET_Z4, | |
a6b151f1 DJ |
1244 | PACKET_vFile_open, |
1245 | PACKET_vFile_pread, | |
1246 | PACKET_vFile_pwrite, | |
1247 | PACKET_vFile_close, | |
1248 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1249 | PACKET_vFile_readlink, |
0876f84a | 1250 | PACKET_qXfer_auxv, |
23181151 | 1251 | PACKET_qXfer_features, |
cfa9d6d9 | 1252 | PACKET_qXfer_libraries, |
2268b414 | 1253 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1254 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1255 | PACKET_qXfer_spu_read, |
1256 | PACKET_qXfer_spu_write, | |
07e059b5 | 1257 | PACKET_qXfer_osdata, |
dc146f7c | 1258 | PACKET_qXfer_threads, |
0fb4aa4b | 1259 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1260 | PACKET_qXfer_traceframe_info, |
169081d0 | 1261 | PACKET_qXfer_uib, |
711e434b | 1262 | PACKET_qGetTIBAddr, |
444abaca | 1263 | PACKET_qGetTLSAddr, |
be2a5f71 | 1264 | PACKET_qSupported, |
89be2091 | 1265 | PACKET_QPassSignals, |
9b224c5e | 1266 | PACKET_QProgramSignals, |
08388c79 | 1267 | PACKET_qSearch_memory, |
2d717e4f DJ |
1268 | PACKET_vAttach, |
1269 | PACKET_vRun, | |
a6f3e723 | 1270 | PACKET_QStartNoAckMode, |
82f73884 | 1271 | PACKET_vKill, |
4aa995e1 PA |
1272 | PACKET_qXfer_siginfo_read, |
1273 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1274 | PACKET_qAttached, |
782b2b07 | 1275 | PACKET_ConditionalTracepoints, |
3788aec7 | 1276 | PACKET_ConditionalBreakpoints, |
7a697b8d | 1277 | PACKET_FastTracepoints, |
0fb4aa4b | 1278 | PACKET_StaticTracepoints, |
1e4d1764 | 1279 | PACKET_InstallInTrace, |
40ab02ce MS |
1280 | PACKET_bc, |
1281 | PACKET_bs, | |
409873ef | 1282 | PACKET_TracepointSource, |
d914c394 | 1283 | PACKET_QAllow, |
78d85199 | 1284 | PACKET_qXfer_fdpic, |
03583c20 | 1285 | PACKET_QDisableRandomization, |
d1feda86 | 1286 | PACKET_QAgent, |
444abaca DJ |
1287 | PACKET_MAX |
1288 | }; | |
506fb367 | 1289 | |
444abaca | 1290 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1291 | |
1292 | static void | |
444abaca DJ |
1293 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1294 | struct cmd_list_element *c) | |
dc8acb97 | 1295 | { |
444abaca | 1296 | struct packet_config *packet; |
dc8acb97 | 1297 | |
444abaca DJ |
1298 | for (packet = remote_protocol_packets; |
1299 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1300 | packet++) | |
1301 | { | |
1302 | if (&packet->detect == c->var) | |
1303 | { | |
1304 | update_packet_config (packet); | |
1305 | return; | |
1306 | } | |
1307 | } | |
9b20d036 | 1308 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1309 | c->name); |
dc8acb97 MS |
1310 | } |
1311 | ||
5a2468f5 | 1312 | static void |
444abaca DJ |
1313 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1314 | struct cmd_list_element *c, | |
1315 | const char *value) | |
5a2468f5 | 1316 | { |
444abaca | 1317 | struct packet_config *packet; |
5a2468f5 | 1318 | |
444abaca DJ |
1319 | for (packet = remote_protocol_packets; |
1320 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1321 | packet++) | |
1322 | { | |
1323 | if (&packet->detect == c->var) | |
1324 | { | |
1325 | show_packet_config_cmd (packet); | |
1326 | return; | |
1327 | } | |
1328 | } | |
9b20d036 | 1329 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1330 | c->name); |
5a2468f5 JM |
1331 | } |
1332 | ||
d471ea57 AC |
1333 | /* Should we try one of the 'Z' requests? */ |
1334 | ||
1335 | enum Z_packet_type | |
1336 | { | |
1337 | Z_PACKET_SOFTWARE_BP, | |
1338 | Z_PACKET_HARDWARE_BP, | |
1339 | Z_PACKET_WRITE_WP, | |
1340 | Z_PACKET_READ_WP, | |
1341 | Z_PACKET_ACCESS_WP, | |
1342 | NR_Z_PACKET_TYPES | |
1343 | }; | |
96baa820 | 1344 | |
d471ea57 | 1345 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1346 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1347 | |
7f19b9a2 | 1348 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1349 | |
1350 | static void | |
fba45db2 KB |
1351 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1352 | struct cmd_list_element *c) | |
96baa820 | 1353 | { |
d471ea57 | 1354 | int i; |
a744cf53 | 1355 | |
d471ea57 AC |
1356 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1357 | { | |
444abaca DJ |
1358 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1359 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1360 | } |
96baa820 JM |
1361 | } |
1362 | ||
1363 | static void | |
08546159 AC |
1364 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1365 | struct cmd_list_element *c, | |
1366 | const char *value) | |
96baa820 | 1367 | { |
d471ea57 | 1368 | int i; |
a744cf53 | 1369 | |
d471ea57 AC |
1370 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1371 | { | |
444abaca | 1372 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1373 | } |
96baa820 JM |
1374 | } |
1375 | ||
9d1f7ab2 MS |
1376 | /* Should we try the 'ThreadInfo' query packet? |
1377 | ||
1378 | This variable (NOT available to the user: auto-detect only!) | |
1379 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1380 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1381 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1382 | and set to false when the target fails to recognize it). */ |
1383 | ||
1384 | static int use_threadinfo_query; | |
1385 | static int use_threadextra_query; | |
1386 | ||
23860348 | 1387 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1388 | static struct async_signal_handler *sigint_remote_twice_token; |
1389 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1390 | |
74531fed PA |
1391 | \f |
1392 | /* Asynchronous signal handle registered as event loop source for | |
1393 | when we have pending events ready to be passed to the core. */ | |
1394 | ||
1395 | static struct async_event_handler *remote_async_inferior_event_token; | |
1396 | ||
1397 | /* Asynchronous signal handle registered as event loop source for when | |
1398 | the remote sent us a %Stop notification. The registered callback | |
1399 | will do a vStopped sequence to pull the rest of the events out of | |
1400 | the remote side into our event queue. */ | |
1401 | ||
1402 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1403 | \f |
1404 | ||
79d7f229 PA |
1405 | static ptid_t magic_null_ptid; |
1406 | static ptid_t not_sent_ptid; | |
1407 | static ptid_t any_thread_ptid; | |
1408 | ||
1409 | /* These are the threads which we last sent to the remote system. The | |
1410 | TID member will be -1 for all or -2 for not sent yet. */ | |
1411 | ||
1412 | static ptid_t general_thread; | |
1413 | static ptid_t continue_thread; | |
c5aa993b | 1414 | |
e6e4e701 PA |
1415 | /* This the traceframe which we last selected on the remote system. |
1416 | It will be -1 if no traceframe is selected. */ | |
1417 | static int remote_traceframe_number = -1; | |
1418 | ||
0b16c5cf PA |
1419 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1420 | detach instead of killing it when bailing out). */ | |
1421 | ||
1422 | static int | |
1423 | remote_query_attached (int pid) | |
1424 | { | |
1425 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1426 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1427 | |
1428 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1429 | return 0; | |
1430 | ||
1431 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1432 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1433 | else |
bba74b36 | 1434 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1435 | |
1436 | putpkt (rs->buf); | |
1437 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1438 | ||
1439 | switch (packet_ok (rs->buf, | |
1554e9be | 1440 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1441 | { |
1442 | case PACKET_OK: | |
1443 | if (strcmp (rs->buf, "1") == 0) | |
1444 | return 1; | |
1445 | break; | |
1446 | case PACKET_ERROR: | |
1447 | warning (_("Remote failure reply: %s"), rs->buf); | |
1448 | break; | |
1449 | case PACKET_UNKNOWN: | |
1450 | break; | |
1451 | } | |
1452 | ||
1453 | return 0; | |
1454 | } | |
1455 | ||
49c62f2e PA |
1456 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1457 | has been invented by GDB, instead of reported by the target. Since | |
1458 | we can be connected to a remote system before before knowing about | |
1459 | any inferior, mark the target with execution when we find the first | |
1460 | inferior. If ATTACHED is 1, then we had just attached to this | |
1461 | inferior. If it is 0, then we just created this inferior. If it | |
1462 | is -1, then try querying the remote stub to find out if it had | |
1463 | attached to the inferior or not. */ | |
1941c569 PA |
1464 | |
1465 | static struct inferior * | |
49c62f2e | 1466 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1467 | { |
1941c569 PA |
1468 | struct inferior *inf; |
1469 | ||
0b16c5cf PA |
1470 | /* Check whether this process we're learning about is to be |
1471 | considered attached, or if is to be considered to have been | |
1472 | spawned by the stub. */ | |
1473 | if (attached == -1) | |
1474 | attached = remote_query_attached (pid); | |
1475 | ||
6c95b8df PA |
1476 | if (gdbarch_has_global_solist (target_gdbarch)) |
1477 | { | |
1478 | /* If the target shares code across all inferiors, then every | |
1479 | attach adds a new inferior. */ | |
1480 | inf = add_inferior (pid); | |
1481 | ||
1482 | /* ... and every inferior is bound to the same program space. | |
1483 | However, each inferior may still have its own address | |
1484 | space. */ | |
1485 | inf->aspace = maybe_new_address_space (); | |
1486 | inf->pspace = current_program_space; | |
1487 | } | |
1488 | else | |
1489 | { | |
1490 | /* In the traditional debugging scenario, there's a 1-1 match | |
1491 | between program/address spaces. We simply bind the inferior | |
1492 | to the program space's address space. */ | |
1493 | inf = current_inferior (); | |
1494 | inferior_appeared (inf, pid); | |
1495 | } | |
1941c569 | 1496 | |
0b16c5cf | 1497 | inf->attach_flag = attached; |
49c62f2e | 1498 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1499 | |
1941c569 PA |
1500 | return inf; |
1501 | } | |
1502 | ||
1503 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1504 | according to RUNNING. */ | |
1505 | ||
c906108c | 1506 | static void |
1941c569 | 1507 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1508 | { |
1941c569 PA |
1509 | add_thread (ptid); |
1510 | ||
1511 | set_executing (ptid, running); | |
1512 | set_running (ptid, running); | |
1513 | } | |
1514 | ||
1515 | /* Come here when we learn about a thread id from the remote target. | |
1516 | It may be the first time we hear about such thread, so take the | |
1517 | opportunity to add it to GDB's thread list. In case this is the | |
1518 | first time we're noticing its corresponding inferior, add it to | |
1519 | GDB's inferior list as well. */ | |
1520 | ||
1521 | static void | |
1522 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1523 | { | |
c906108c SS |
1524 | /* If this is a new thread, add it to GDB's thread list. |
1525 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1526 | |
1527 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1528 | { | |
1529 | /* We're seeing an event on a thread id we knew had exited. | |
1530 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1531 | remote_add_thread (currthread, running); |
82f73884 PA |
1532 | return; |
1533 | } | |
1534 | ||
79d7f229 | 1535 | if (!in_thread_list (currthread)) |
c0a2216e | 1536 | { |
1941c569 | 1537 | struct inferior *inf = NULL; |
bad34192 | 1538 | int pid = ptid_get_pid (currthread); |
1941c569 | 1539 | |
bad34192 PA |
1540 | if (ptid_is_pid (inferior_ptid) |
1541 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1542 | { |
1543 | /* inferior_ptid has no thread member yet. This can happen | |
1544 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1545 | stub doesn't support qC. This is the first stop reported | |
1546 | after an attach, so this is the main thread. Update the | |
1547 | ptid in the thread list. */ | |
bad34192 PA |
1548 | if (in_thread_list (pid_to_ptid (pid))) |
1549 | thread_change_ptid (inferior_ptid, currthread); | |
1550 | else | |
1551 | { | |
1552 | remote_add_thread (currthread, running); | |
1553 | inferior_ptid = currthread; | |
1554 | } | |
dc146f7c | 1555 | return; |
c0a2216e | 1556 | } |
82f73884 PA |
1557 | |
1558 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1559 | { |
1560 | /* inferior_ptid is not set yet. This can happen with the | |
1561 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1562 | doesn't support qC. This is the first stop reported | |
1563 | after an attach, so this is the main thread. Update the | |
1564 | ptid in the thread list. */ | |
dc146f7c | 1565 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1566 | return; |
c0a2216e | 1567 | } |
82f73884 | 1568 | |
29c87f7f PA |
1569 | /* When connecting to a target remote, or to a target |
1570 | extended-remote which already was debugging an inferior, we | |
1571 | may not know about it yet. Add it before adding its child | |
1572 | thread, so notifications are emitted in a sensible order. */ | |
1573 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1574 | { |
1575 | struct remote_state *rs = get_remote_state (); | |
1576 | int fake_pid_p = !remote_multi_process_p (rs); | |
1577 | ||
1578 | inf = remote_add_inferior (fake_pid_p, | |
1579 | ptid_get_pid (currthread), -1); | |
1580 | } | |
29c87f7f | 1581 | |
82f73884 | 1582 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1583 | remote_add_thread (currthread, running); |
1584 | ||
1585 | /* If we found a new inferior, let the common code do whatever | |
1586 | it needs to with it (e.g., read shared libraries, insert | |
1587 | breakpoints). */ | |
1588 | if (inf != NULL) | |
1589 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1590 | } |
c906108c SS |
1591 | } |
1592 | ||
dc146f7c VP |
1593 | /* Return the private thread data, creating it if necessary. */ |
1594 | ||
70221824 | 1595 | static struct private_thread_info * |
dc146f7c VP |
1596 | demand_private_info (ptid_t ptid) |
1597 | { | |
1598 | struct thread_info *info = find_thread_ptid (ptid); | |
1599 | ||
1600 | gdb_assert (info); | |
1601 | ||
1602 | if (!info->private) | |
1603 | { | |
1604 | info->private = xmalloc (sizeof (*(info->private))); | |
1605 | info->private_dtor = free_private_thread_info; | |
1606 | info->private->core = -1; | |
1607 | info->private->extra = 0; | |
1608 | } | |
1609 | ||
1610 | return info->private; | |
1611 | } | |
1612 | ||
74531fed PA |
1613 | /* Call this function as a result of |
1614 | 1) A halt indication (T packet) containing a thread id | |
1615 | 2) A direct query of currthread | |
0df8b418 | 1616 | 3) Successful execution of set thread */ |
74531fed PA |
1617 | |
1618 | static void | |
1619 | record_currthread (ptid_t currthread) | |
1620 | { | |
1621 | general_thread = currthread; | |
74531fed PA |
1622 | } |
1623 | ||
89be2091 DJ |
1624 | static char *last_pass_packet; |
1625 | ||
1626 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1627 | it can simply pass through to the inferior without reporting. */ | |
1628 | ||
1629 | static void | |
2455069d | 1630 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1631 | { |
1632 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1633 | { | |
1634 | char *pass_packet, *p; | |
89be2091 DJ |
1635 | int count = 0, i; |
1636 | ||
1637 | gdb_assert (numsigs < 256); | |
1638 | for (i = 0; i < numsigs; i++) | |
1639 | { | |
2455069d | 1640 | if (pass_signals[i]) |
89be2091 DJ |
1641 | count++; |
1642 | } | |
1643 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1644 | strcpy (pass_packet, "QPassSignals:"); | |
1645 | p = pass_packet + strlen (pass_packet); | |
1646 | for (i = 0; i < numsigs; i++) | |
1647 | { | |
2455069d | 1648 | if (pass_signals[i]) |
89be2091 DJ |
1649 | { |
1650 | if (i >= 16) | |
1651 | *p++ = tohex (i >> 4); | |
1652 | *p++ = tohex (i & 15); | |
1653 | if (count) | |
1654 | *p++ = ';'; | |
1655 | else | |
1656 | break; | |
1657 | count--; | |
1658 | } | |
1659 | } | |
1660 | *p = 0; | |
1661 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1662 | { | |
1663 | struct remote_state *rs = get_remote_state (); | |
1664 | char *buf = rs->buf; | |
1665 | ||
1666 | putpkt (pass_packet); | |
1667 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1668 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1669 | if (last_pass_packet) | |
1670 | xfree (last_pass_packet); | |
1671 | last_pass_packet = pass_packet; | |
1672 | } | |
1673 | else | |
1674 | xfree (pass_packet); | |
1675 | } | |
1676 | } | |
1677 | ||
9b224c5e PA |
1678 | /* The last QProgramSignals packet sent to the target. We bypass |
1679 | sending a new program signals list down to the target if the new | |
1680 | packet is exactly the same as the last we sent. IOW, we only let | |
1681 | the target know about program signals list changes. */ | |
1682 | ||
1683 | static char *last_program_signals_packet; | |
1684 | ||
1685 | /* If 'QProgramSignals' is supported, tell the remote stub what | |
1686 | signals it should pass through to the inferior when detaching. */ | |
1687 | ||
1688 | static void | |
1689 | remote_program_signals (int numsigs, unsigned char *signals) | |
1690 | { | |
1691 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1692 | { | |
1693 | char *packet, *p; | |
1694 | int count = 0, i; | |
1695 | ||
1696 | gdb_assert (numsigs < 256); | |
1697 | for (i = 0; i < numsigs; i++) | |
1698 | { | |
1699 | if (signals[i]) | |
1700 | count++; | |
1701 | } | |
1702 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1703 | strcpy (packet, "QProgramSignals:"); | |
1704 | p = packet + strlen (packet); | |
1705 | for (i = 0; i < numsigs; i++) | |
1706 | { | |
1707 | if (signal_pass_state (i)) | |
1708 | { | |
1709 | if (i >= 16) | |
1710 | *p++ = tohex (i >> 4); | |
1711 | *p++ = tohex (i & 15); | |
1712 | if (count) | |
1713 | *p++ = ';'; | |
1714 | else | |
1715 | break; | |
1716 | count--; | |
1717 | } | |
1718 | } | |
1719 | *p = 0; | |
1720 | if (!last_program_signals_packet | |
1721 | || strcmp (last_program_signals_packet, packet) != 0) | |
1722 | { | |
1723 | struct remote_state *rs = get_remote_state (); | |
1724 | char *buf = rs->buf; | |
1725 | ||
1726 | putpkt (packet); | |
1727 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1728 | packet_ok (buf, &remote_protocol_packets[PACKET_QProgramSignals]); | |
1729 | xfree (last_program_signals_packet); | |
1730 | last_program_signals_packet = packet; | |
1731 | } | |
1732 | else | |
1733 | xfree (packet); | |
1734 | } | |
1735 | } | |
1736 | ||
79d7f229 PA |
1737 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1738 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1739 | thread. If GEN is set, set the general thread, if not, then set | |
1740 | the step/continue thread. */ | |
c906108c | 1741 | static void |
79d7f229 | 1742 | set_thread (struct ptid ptid, int gen) |
c906108c | 1743 | { |
d01949b6 | 1744 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1745 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1746 | char *buf = rs->buf; |
79d7f229 | 1747 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1748 | |
79d7f229 | 1749 | if (ptid_equal (state, ptid)) |
c906108c SS |
1750 | return; |
1751 | ||
79d7f229 PA |
1752 | *buf++ = 'H'; |
1753 | *buf++ = gen ? 'g' : 'c'; | |
1754 | if (ptid_equal (ptid, magic_null_ptid)) | |
1755 | xsnprintf (buf, endbuf - buf, "0"); | |
1756 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1757 | xsnprintf (buf, endbuf - buf, "0"); | |
1758 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1759 | xsnprintf (buf, endbuf - buf, "-1"); | |
1760 | else | |
82f73884 | 1761 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1762 | putpkt (rs->buf); |
6d820c5c | 1763 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1764 | if (gen) |
79d7f229 | 1765 | general_thread = ptid; |
c906108c | 1766 | else |
79d7f229 | 1767 | continue_thread = ptid; |
c906108c | 1768 | } |
79d7f229 PA |
1769 | |
1770 | static void | |
1771 | set_general_thread (struct ptid ptid) | |
1772 | { | |
1773 | set_thread (ptid, 1); | |
1774 | } | |
1775 | ||
1776 | static void | |
1777 | set_continue_thread (struct ptid ptid) | |
1778 | { | |
1779 | set_thread (ptid, 0); | |
1780 | } | |
1781 | ||
3c9c4b83 PA |
1782 | /* Change the remote current process. Which thread within the process |
1783 | ends up selected isn't important, as long as it is the same process | |
1784 | as what INFERIOR_PTID points to. | |
1785 | ||
1786 | This comes from that fact that there is no explicit notion of | |
1787 | "selected process" in the protocol. The selected process for | |
1788 | general operations is the process the selected general thread | |
1789 | belongs to. */ | |
1790 | ||
1791 | static void | |
1792 | set_general_process (void) | |
1793 | { | |
1794 | struct remote_state *rs = get_remote_state (); | |
1795 | ||
1796 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1797 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1798 | return; |
1799 | ||
1800 | /* We only need to change the remote current thread if it's pointing | |
1801 | at some other process. */ | |
1802 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1803 | set_general_thread (inferior_ptid); | |
1804 | } | |
1805 | ||
c906108c | 1806 | \f |
79d7f229 PA |
1807 | /* Return nonzero if the thread PTID is still alive on the remote |
1808 | system. */ | |
c906108c SS |
1809 | |
1810 | static int | |
28439f5e | 1811 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1812 | { |
6d820c5c | 1813 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1814 | char *p, *endp; |
c906108c | 1815 | |
c0a2216e PA |
1816 | if (ptid_equal (ptid, magic_null_ptid)) |
1817 | /* The main thread is always alive. */ | |
1818 | return 1; | |
1819 | ||
1820 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1821 | /* The main thread is always alive. This can happen after a | |
1822 | vAttach, if the remote side doesn't support | |
1823 | multi-threading. */ | |
1824 | return 1; | |
1825 | ||
82f73884 PA |
1826 | p = rs->buf; |
1827 | endp = rs->buf + get_remote_packet_size (); | |
1828 | ||
1829 | *p++ = 'T'; | |
1830 | write_ptid (p, endp, ptid); | |
1831 | ||
2e9f7625 | 1832 | putpkt (rs->buf); |
6d820c5c | 1833 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1834 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1835 | } |
1836 | ||
1837 | /* About these extended threadlist and threadinfo packets. They are | |
1838 | variable length packets but, the fields within them are often fixed | |
1839 | length. They are redundent enough to send over UDP as is the | |
1840 | remote protocol in general. There is a matching unit test module | |
1841 | in libstub. */ | |
1842 | ||
cce74817 JM |
1843 | #define OPAQUETHREADBYTES 8 |
1844 | ||
1845 | /* a 64 bit opaque identifier */ | |
1846 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1847 | ||
23860348 | 1848 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1849 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1850 | changable. */ |
cce74817 JM |
1851 | |
1852 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1853 | Plan to fix this. */ |
cce74817 | 1854 | |
23860348 | 1855 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1856 | |
9d1f7ab2 | 1857 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1858 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1859 | |
1860 | struct gdb_ext_thread_info | |
c5aa993b | 1861 | { |
23860348 | 1862 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1863 | int active; /* Has state interesting to GDB? |
23860348 | 1864 | regs, stack. */ |
2bc416ba | 1865 | char display[256]; /* Brief state display, name, |
cedea757 | 1866 | blocked/suspended. */ |
23860348 | 1867 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1868 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1869 | whatever. */ |
c5aa993b | 1870 | }; |
cce74817 JM |
1871 | |
1872 | /* The volume of remote transfers can be limited by submitting | |
1873 | a mask containing bits specifying the desired information. | |
1874 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1875 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1876 | |
1877 | #define TAG_THREADID 1 | |
1878 | #define TAG_EXISTS 2 | |
1879 | #define TAG_DISPLAY 4 | |
1880 | #define TAG_THREADNAME 8 | |
c5aa993b | 1881 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1882 | |
23860348 | 1883 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1884 | |
b2dd6311 | 1885 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1886 | |
a14ed312 | 1887 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1888 | |
a14ed312 | 1889 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1890 | |
23860348 | 1891 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1892 | |
a14ed312 | 1893 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1894 | |
a14ed312 | 1895 | static char *pack_int (char *buf, int value); |
cce74817 | 1896 | |
a14ed312 | 1897 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1898 | |
a14ed312 | 1899 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1900 | |
23860348 | 1901 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1902 | |
23860348 | 1903 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1904 | |
23860348 | 1905 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1906 | |
23860348 | 1907 | static int threadref_to_int (threadref *ref); |
cce74817 | 1908 | |
23860348 | 1909 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1910 | |
23860348 | 1911 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1912 | |
2bc416ba | 1913 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1914 | threadref *id); |
cce74817 | 1915 | |
a14ed312 | 1916 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1917 | threadref *expectedref, |
a14ed312 KB |
1918 | struct gdb_ext_thread_info |
1919 | *info); | |
cce74817 JM |
1920 | |
1921 | ||
2bc416ba | 1922 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1923 | int fieldset, /*TAG mask */ |
a14ed312 | 1924 | struct gdb_ext_thread_info *info); |
cce74817 | 1925 | |
a14ed312 KB |
1926 | static char *pack_threadlist_request (char *pkt, int startflag, |
1927 | int threadcount, | |
23860348 | 1928 | threadref *nextthread); |
cce74817 | 1929 | |
a14ed312 KB |
1930 | static int parse_threadlist_response (char *pkt, |
1931 | int result_limit, | |
23860348 | 1932 | threadref *original_echo, |
2bc416ba | 1933 | threadref *resultlist, |
23860348 | 1934 | int *doneflag); |
cce74817 | 1935 | |
a14ed312 | 1936 | static int remote_get_threadlist (int startflag, |
23860348 | 1937 | threadref *nextthread, |
a14ed312 KB |
1938 | int result_limit, |
1939 | int *done, | |
2bc416ba | 1940 | int *result_count, |
23860348 | 1941 | threadref *threadlist); |
cce74817 | 1942 | |
23860348 | 1943 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1944 | |
a14ed312 KB |
1945 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1946 | void *context, int looplimit); | |
cce74817 | 1947 | |
23860348 | 1948 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1949 | |
82f73884 PA |
1950 | |
1951 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1952 | buffer we're allowed to write to. Returns | |
1953 | BUF+CHARACTERS_WRITTEN. */ | |
1954 | ||
1955 | static char * | |
1956 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1957 | { | |
1958 | int pid, tid; | |
1959 | struct remote_state *rs = get_remote_state (); | |
1960 | ||
1961 | if (remote_multi_process_p (rs)) | |
1962 | { | |
1963 | pid = ptid_get_pid (ptid); | |
1964 | if (pid < 0) | |
1965 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1966 | else | |
1967 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1968 | } | |
1969 | tid = ptid_get_tid (ptid); | |
1970 | if (tid < 0) | |
1971 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1972 | else | |
1973 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1974 | ||
1975 | return buf; | |
1976 | } | |
1977 | ||
1978 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1979 | passed the last parsed char. Returns null_ptid on error. */ | |
1980 | ||
1981 | static ptid_t | |
1982 | read_ptid (char *buf, char **obuf) | |
1983 | { | |
1984 | char *p = buf; | |
1985 | char *pp; | |
1986 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1987 | |
1988 | if (*p == 'p') | |
1989 | { | |
1990 | /* Multi-process ptid. */ | |
1991 | pp = unpack_varlen_hex (p + 1, &pid); | |
1992 | if (*pp != '.') | |
b37520b6 | 1993 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1994 | |
1995 | p = pp; | |
1996 | pp = unpack_varlen_hex (p + 1, &tid); | |
1997 | if (obuf) | |
1998 | *obuf = pp; | |
1999 | return ptid_build (pid, 0, tid); | |
2000 | } | |
2001 | ||
2002 | /* No multi-process. Just a tid. */ | |
2003 | pp = unpack_varlen_hex (p, &tid); | |
2004 | ||
2005 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2006 | what's in inferior_ptid, unless it's null at this point. If so, |
2007 | then since there's no way to know the pid of the reported | |
2008 | threads, use the magic number. */ | |
2009 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2010 | pid = ptid_get_pid (magic_null_ptid); | |
2011 | else | |
2012 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2013 | |
2014 | if (obuf) | |
2015 | *obuf = pp; | |
2016 | return ptid_build (pid, 0, tid); | |
2017 | } | |
2018 | ||
23860348 | 2019 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2020 | |
2021 | static const char hexchars[] = "0123456789abcdef"; | |
2022 | ||
2023 | static int | |
fba45db2 | 2024 | ishex (int ch, int *val) |
c906108c SS |
2025 | { |
2026 | if ((ch >= 'a') && (ch <= 'f')) | |
2027 | { | |
2028 | *val = ch - 'a' + 10; | |
2029 | return 1; | |
2030 | } | |
2031 | if ((ch >= 'A') && (ch <= 'F')) | |
2032 | { | |
2033 | *val = ch - 'A' + 10; | |
2034 | return 1; | |
2035 | } | |
2036 | if ((ch >= '0') && (ch <= '9')) | |
2037 | { | |
2038 | *val = ch - '0'; | |
2039 | return 1; | |
2040 | } | |
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | static int | |
fba45db2 | 2045 | stubhex (int ch) |
c906108c SS |
2046 | { |
2047 | if (ch >= 'a' && ch <= 'f') | |
2048 | return ch - 'a' + 10; | |
2049 | if (ch >= '0' && ch <= '9') | |
2050 | return ch - '0'; | |
2051 | if (ch >= 'A' && ch <= 'F') | |
2052 | return ch - 'A' + 10; | |
2053 | return -1; | |
2054 | } | |
2055 | ||
2056 | static int | |
fba45db2 | 2057 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2058 | { |
2059 | int nibble; | |
2060 | int retval = 0; | |
2061 | ||
2062 | while (fieldlength) | |
2063 | { | |
2064 | nibble = stubhex (*buff++); | |
2065 | retval |= nibble; | |
2066 | fieldlength--; | |
2067 | if (fieldlength) | |
2068 | retval = retval << 4; | |
2069 | } | |
2070 | return retval; | |
2071 | } | |
2072 | ||
2073 | char * | |
fba45db2 | 2074 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2075 | ULONGEST *result) |
c906108c SS |
2076 | { |
2077 | int nibble; | |
d49c44d5 | 2078 | ULONGEST retval = 0; |
c906108c SS |
2079 | |
2080 | while (ishex (*buff, &nibble)) | |
2081 | { | |
2082 | buff++; | |
2083 | retval = retval << 4; | |
2084 | retval |= nibble & 0x0f; | |
2085 | } | |
2086 | *result = retval; | |
2087 | return buff; | |
2088 | } | |
2089 | ||
2090 | static char * | |
fba45db2 | 2091 | unpack_nibble (char *buf, int *val) |
c906108c | 2092 | { |
b7589f7d | 2093 | *val = fromhex (*buf++); |
c906108c SS |
2094 | return buf; |
2095 | } | |
2096 | ||
2097 | static char * | |
fba45db2 | 2098 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2099 | { |
2100 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2101 | return buf; | |
2102 | } | |
2103 | ||
2104 | static char * | |
fba45db2 | 2105 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2106 | { |
2107 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2108 | *pkt++ = hexchars[(byte & 0xf)]; | |
2109 | return pkt; | |
2110 | } | |
2111 | ||
2112 | static char * | |
fba45db2 | 2113 | unpack_byte (char *buf, int *value) |
c906108c SS |
2114 | { |
2115 | *value = stub_unpack_int (buf, 2); | |
2116 | return buf + 2; | |
2117 | } | |
2118 | ||
2119 | static char * | |
fba45db2 | 2120 | pack_int (char *buf, int value) |
c906108c SS |
2121 | { |
2122 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2123 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2124 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2125 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2126 | return buf; | |
2127 | } | |
2128 | ||
2129 | static char * | |
fba45db2 | 2130 | unpack_int (char *buf, int *value) |
c906108c SS |
2131 | { |
2132 | *value = stub_unpack_int (buf, 8); | |
2133 | return buf + 8; | |
2134 | } | |
2135 | ||
23860348 | 2136 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2137 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2138 | |
2139 | static char * | |
fba45db2 | 2140 | pack_string (char *pkt, char *string) |
c906108c SS |
2141 | { |
2142 | char ch; | |
2143 | int len; | |
2144 | ||
2145 | len = strlen (string); | |
2146 | if (len > 200) | |
23860348 | 2147 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2148 | pkt = pack_hex_byte (pkt, len); |
2149 | while (len-- > 0) | |
2150 | { | |
2151 | ch = *string++; | |
2152 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2153 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2154 | *pkt++ = ch; |
2155 | } | |
2156 | return pkt; | |
2157 | } | |
2158 | #endif /* 0 (unused) */ | |
2159 | ||
2160 | static char * | |
fba45db2 | 2161 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2162 | { |
2163 | while (length--) | |
2164 | *dest++ = *src++; | |
2165 | *dest = '\0'; | |
2166 | return src; | |
2167 | } | |
2168 | ||
2169 | static char * | |
fba45db2 | 2170 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2171 | { |
2172 | char *limit; | |
2173 | unsigned char *altid; | |
2174 | ||
2175 | altid = (unsigned char *) id; | |
2176 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2177 | while (pkt < limit) | |
2178 | pkt = pack_hex_byte (pkt, *altid++); | |
2179 | return pkt; | |
2180 | } | |
2181 | ||
2182 | ||
2183 | static char * | |
fba45db2 | 2184 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2185 | { |
2186 | char *altref; | |
2187 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2188 | int x, y; | |
2189 | ||
2190 | altref = (char *) id; | |
2191 | ||
2192 | while (inbuf < limit) | |
2193 | { | |
2194 | x = stubhex (*inbuf++); | |
2195 | y = stubhex (*inbuf++); | |
2196 | *altref++ = (x << 4) | y; | |
2197 | } | |
2198 | return inbuf; | |
2199 | } | |
2200 | ||
2201 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2202 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2203 | to use 64bit thread references internally. This is an adapter |
2204 | function. */ | |
2205 | ||
2206 | void | |
fba45db2 | 2207 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2208 | { |
2209 | unsigned char *scan; | |
2210 | ||
2211 | scan = (unsigned char *) id; | |
2212 | { | |
2213 | int i = 4; | |
2214 | while (i--) | |
2215 | *scan++ = 0; | |
2216 | } | |
2217 | *scan++ = (value >> 24) & 0xff; | |
2218 | *scan++ = (value >> 16) & 0xff; | |
2219 | *scan++ = (value >> 8) & 0xff; | |
2220 | *scan++ = (value & 0xff); | |
2221 | } | |
2222 | ||
2223 | static int | |
fba45db2 | 2224 | threadref_to_int (threadref *ref) |
c906108c SS |
2225 | { |
2226 | int i, value = 0; | |
2227 | unsigned char *scan; | |
2228 | ||
cfd77fa1 | 2229 | scan = *ref; |
c906108c SS |
2230 | scan += 4; |
2231 | i = 4; | |
2232 | while (i-- > 0) | |
2233 | value = (value << 8) | ((*scan++) & 0xff); | |
2234 | return value; | |
2235 | } | |
2236 | ||
2237 | static void | |
fba45db2 | 2238 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2239 | { |
2240 | int i; | |
2241 | unsigned char *csrc, *cdest; | |
2242 | ||
2243 | csrc = (unsigned char *) src; | |
2244 | cdest = (unsigned char *) dest; | |
2245 | i = 8; | |
2246 | while (i--) | |
2247 | *cdest++ = *csrc++; | |
2248 | } | |
2249 | ||
2250 | static int | |
fba45db2 | 2251 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2252 | { |
23860348 | 2253 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2254 | #if 0 |
2255 | unsigned char *srcp, *destp; | |
2256 | int i, result; | |
2257 | srcp = (char *) src; | |
2258 | destp = (char *) dest; | |
2259 | ||
2260 | result = 1; | |
2261 | while (i-- > 0) | |
2262 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2263 | return result; | |
2264 | #endif | |
2265 | return 1; | |
2266 | } | |
2267 | ||
2268 | /* | |
c5aa993b JM |
2269 | threadid:1, # always request threadid |
2270 | context_exists:2, | |
2271 | display:4, | |
2272 | unique_name:8, | |
2273 | more_display:16 | |
2274 | */ | |
c906108c SS |
2275 | |
2276 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2277 | ||
2278 | static char * | |
fba45db2 | 2279 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2280 | { |
23860348 MS |
2281 | *pkt++ = 'q'; /* Info Query */ |
2282 | *pkt++ = 'P'; /* process or thread info */ | |
2283 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2284 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2285 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2286 | return pkt; |
2287 | } | |
2288 | ||
23860348 | 2289 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2290 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2291 | add more fields as time goes by. */ |
c906108c | 2292 | |
23860348 | 2293 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2294 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2295 | fetch registers and its stack? */ |
c5aa993b | 2296 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2297 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2298 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2299 | the process. */ |
c906108c SS |
2300 | |
2301 | static int | |
fba45db2 KB |
2302 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2303 | struct gdb_ext_thread_info *info) | |
c906108c | 2304 | { |
d01949b6 | 2305 | struct remote_state *rs = get_remote_state (); |
c906108c | 2306 | int mask, length; |
cfd77fa1 | 2307 | int tag; |
c906108c | 2308 | threadref ref; |
6d820c5c | 2309 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2310 | int retval = 1; |
2311 | ||
23860348 | 2312 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2313 | info->active = 0; |
2314 | info->display[0] = '\0'; | |
2315 | info->shortname[0] = '\0'; | |
2316 | info->more_display[0] = '\0'; | |
2317 | ||
23860348 MS |
2318 | /* Assume the characters indicating the packet type have been |
2319 | stripped. */ | |
c906108c SS |
2320 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2321 | pkt = unpack_threadid (pkt, &ref); | |
2322 | ||
2323 | if (mask == 0) | |
8a3fe4f8 | 2324 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2325 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2326 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2327 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2328 | return 0; |
2329 | } | |
2330 | copy_threadref (&info->threadid, &ref); | |
2331 | ||
23860348 | 2332 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2333 | |
23860348 MS |
2334 | /* Packets are terminated with nulls. */ |
2335 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2336 | { |
2337 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2338 | pkt = unpack_byte (pkt, &length); /* length */ |
2339 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2340 | { |
8a3fe4f8 | 2341 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2342 | retval = 0; |
2343 | break; | |
2344 | } | |
2345 | if (tag == TAG_THREADID) | |
2346 | { | |
2347 | if (length != 16) | |
2348 | { | |
8a3fe4f8 | 2349 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2350 | retval = 0; |
2351 | break; | |
2352 | } | |
2353 | pkt = unpack_threadid (pkt, &ref); | |
2354 | mask = mask & ~TAG_THREADID; | |
2355 | continue; | |
2356 | } | |
2357 | if (tag == TAG_EXISTS) | |
2358 | { | |
2359 | info->active = stub_unpack_int (pkt, length); | |
2360 | pkt += length; | |
2361 | mask = mask & ~(TAG_EXISTS); | |
2362 | if (length > 8) | |
2363 | { | |
8a3fe4f8 | 2364 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2365 | retval = 0; |
2366 | break; | |
2367 | } | |
2368 | continue; | |
2369 | } | |
2370 | if (tag == TAG_THREADNAME) | |
2371 | { | |
2372 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2373 | mask = mask & ~TAG_THREADNAME; | |
2374 | continue; | |
2375 | } | |
2376 | if (tag == TAG_DISPLAY) | |
2377 | { | |
2378 | pkt = unpack_string (pkt, &info->display[0], length); | |
2379 | mask = mask & ~TAG_DISPLAY; | |
2380 | continue; | |
2381 | } | |
2382 | if (tag == TAG_MOREDISPLAY) | |
2383 | { | |
2384 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2385 | mask = mask & ~TAG_MOREDISPLAY; | |
2386 | continue; | |
2387 | } | |
8a3fe4f8 | 2388 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2389 | break; /* Not a tag we know about. */ |
c906108c SS |
2390 | } |
2391 | return retval; | |
2392 | } | |
2393 | ||
2394 | static int | |
fba45db2 KB |
2395 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2396 | struct gdb_ext_thread_info *info) | |
c906108c | 2397 | { |
d01949b6 | 2398 | struct remote_state *rs = get_remote_state (); |
c906108c | 2399 | int result; |
c906108c | 2400 | |
2e9f7625 DJ |
2401 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2402 | putpkt (rs->buf); | |
6d820c5c | 2403 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2404 | |
2405 | if (rs->buf[0] == '\0') | |
2406 | return 0; | |
2407 | ||
2e9f7625 | 2408 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2409 | threadid, info); |
c906108c SS |
2410 | return result; |
2411 | } | |
2412 | ||
c906108c SS |
2413 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2414 | ||
2415 | static char * | |
fba45db2 KB |
2416 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2417 | threadref *nextthread) | |
c906108c SS |
2418 | { |
2419 | *pkt++ = 'q'; /* info query packet */ | |
2420 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2421 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2422 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2423 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2424 | *pkt = '\0'; | |
2425 | return pkt; | |
2426 | } | |
2427 | ||
2428 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2429 | ||
2430 | static int | |
fba45db2 KB |
2431 | parse_threadlist_response (char *pkt, int result_limit, |
2432 | threadref *original_echo, threadref *resultlist, | |
2433 | int *doneflag) | |
c906108c | 2434 | { |
d01949b6 | 2435 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2436 | char *limit; |
2437 | int count, resultcount, done; | |
2438 | ||
2439 | resultcount = 0; | |
2440 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2441 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2442 | /* done parse past here */ |
c906108c SS |
2443 | pkt = unpack_byte (pkt, &count); /* count field */ |
2444 | pkt = unpack_nibble (pkt, &done); | |
2445 | /* The first threadid is the argument threadid. */ | |
2446 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2447 | while ((count-- > 0) && (pkt < limit)) | |
2448 | { | |
2449 | pkt = unpack_threadid (pkt, resultlist++); | |
2450 | if (resultcount++ >= result_limit) | |
2451 | break; | |
2452 | } | |
2453 | if (doneflag) | |
2454 | *doneflag = done; | |
2455 | return resultcount; | |
2456 | } | |
2457 | ||
2458 | static int | |
fba45db2 KB |
2459 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2460 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2461 | { |
d01949b6 | 2462 | struct remote_state *rs = get_remote_state (); |
c906108c | 2463 | static threadref echo_nextthread; |
c906108c SS |
2464 | int result = 1; |
2465 | ||
23860348 | 2466 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2467 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2468 | >= get_remote_packet_size ()) | |
ea9c271d | 2469 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2470 | |
6d820c5c DJ |
2471 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2472 | putpkt (rs->buf); | |
2473 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2474 | |
d8f2712d | 2475 | if (*rs->buf == '\0') |
21bce120 | 2476 | return 0; |
d8f2712d VP |
2477 | else |
2478 | *result_count = | |
2479 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2480 | threadlist, done); | |
c906108c SS |
2481 | |
2482 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2483 | { | |
23860348 MS |
2484 | /* FIXME: This is a good reason to drop the packet. */ |
2485 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2486 | /* Possabilities : |
2487 | retransmit immediatly - race conditions | |
2488 | retransmit after timeout - yes | |
2489 | exit | |
2490 | wait for packet, then exit | |
2491 | */ | |
8a3fe4f8 | 2492 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2493 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2494 | } |
2495 | if (*result_count <= 0) | |
2496 | { | |
2497 | if (*done != 1) | |
2498 | { | |
8a3fe4f8 | 2499 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2500 | result = 0; |
2501 | } | |
2502 | return result; /* break; */ | |
2503 | } | |
2504 | if (*result_count > result_limit) | |
2505 | { | |
2506 | *result_count = 0; | |
8a3fe4f8 | 2507 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2508 | return 0; |
2509 | } | |
2510 | return result; | |
2511 | } | |
2512 | ||
23860348 MS |
2513 | /* This is the interface between remote and threads, remotes upper |
2514 | interface. */ | |
c906108c SS |
2515 | |
2516 | /* remote_find_new_threads retrieves the thread list and for each | |
2517 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2518 | adding the thread if it does not already exist. This involves |
c906108c SS |
2519 | getting partial thread lists from the remote target so, polling the |
2520 | quit_flag is required. */ | |
2521 | ||
2522 | ||
23860348 | 2523 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2524 | |
2525 | #define MAXTHREADLISTRESULTS 32 | |
2526 | ||
2527 | static int | |
fba45db2 KB |
2528 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2529 | int looplimit) | |
c906108c SS |
2530 | { |
2531 | int done, i, result_count; | |
2532 | int startflag = 1; | |
2533 | int result = 1; | |
2534 | int loopcount = 0; | |
2535 | static threadref nextthread; | |
2536 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2537 | ||
2538 | done = 0; | |
2539 | while (!done) | |
2540 | { | |
2541 | if (loopcount++ > looplimit) | |
2542 | { | |
2543 | result = 0; | |
8a3fe4f8 | 2544 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2545 | break; |
2546 | } | |
2547 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2548 | &done, &result_count, resultthreadlist)) | |
2549 | { | |
2550 | result = 0; | |
2551 | break; | |
2552 | } | |
23860348 | 2553 | /* Clear for later iterations. */ |
c906108c SS |
2554 | startflag = 0; |
2555 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2556 | if (result_count >= 1) | |
2557 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2558 | i = 0; | |
2559 | while (result_count--) | |
2560 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2561 | break; | |
2562 | } | |
2563 | return result; | |
2564 | } | |
2565 | ||
2566 | static int | |
fba45db2 | 2567 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2568 | { |
79d7f229 PA |
2569 | int pid = ptid_get_pid (inferior_ptid); |
2570 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2571 | |
2572 | if (!in_thread_list (ptid)) | |
2573 | add_thread (ptid); | |
c906108c SS |
2574 | return 1; /* continue iterator */ |
2575 | } | |
2576 | ||
2577 | #define CRAZY_MAX_THREADS 1000 | |
2578 | ||
39f77062 KB |
2579 | static ptid_t |
2580 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2581 | { |
d01949b6 | 2582 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2583 | |
2584 | putpkt ("qC"); | |
6d820c5c | 2585 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2586 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2587 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2588 | else |
2589 | return oldpid; | |
2590 | } | |
2591 | ||
802188a7 RM |
2592 | /* Find new threads for info threads command. |
2593 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2594 | */ |
cce74817 JM |
2595 | |
2596 | static void | |
fba45db2 | 2597 | remote_find_new_threads (void) |
c906108c | 2598 | { |
c5aa993b JM |
2599 | remote_threadlist_iterator (remote_newthread_step, 0, |
2600 | CRAZY_MAX_THREADS); | |
c906108c SS |
2601 | } |
2602 | ||
dc146f7c VP |
2603 | #if defined(HAVE_LIBEXPAT) |
2604 | ||
2605 | typedef struct thread_item | |
2606 | { | |
2607 | ptid_t ptid; | |
2608 | char *extra; | |
2609 | int core; | |
2610 | } thread_item_t; | |
2611 | DEF_VEC_O(thread_item_t); | |
2612 | ||
2613 | struct threads_parsing_context | |
2614 | { | |
2615 | VEC (thread_item_t) *items; | |
2616 | }; | |
2617 | ||
2618 | static void | |
2619 | start_thread (struct gdb_xml_parser *parser, | |
2620 | const struct gdb_xml_element *element, | |
2621 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2622 | { | |
2623 | struct threads_parsing_context *data = user_data; | |
2624 | ||
2625 | struct thread_item item; | |
2626 | char *id; | |
3d2c1d41 | 2627 | struct gdb_xml_value *attr; |
dc146f7c | 2628 | |
3d2c1d41 | 2629 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2630 | item.ptid = read_ptid (id, NULL); |
2631 | ||
3d2c1d41 PA |
2632 | attr = xml_find_attribute (attributes, "core"); |
2633 | if (attr != NULL) | |
2634 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2635 | else |
2636 | item.core = -1; | |
2637 | ||
2638 | item.extra = 0; | |
2639 | ||
2640 | VEC_safe_push (thread_item_t, data->items, &item); | |
2641 | } | |
2642 | ||
2643 | static void | |
2644 | end_thread (struct gdb_xml_parser *parser, | |
2645 | const struct gdb_xml_element *element, | |
2646 | void *user_data, const char *body_text) | |
2647 | { | |
2648 | struct threads_parsing_context *data = user_data; | |
2649 | ||
2650 | if (body_text && *body_text) | |
2ae2a0b7 | 2651 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2652 | } |
2653 | ||
2654 | const struct gdb_xml_attribute thread_attributes[] = { | |
2655 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2656 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2657 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2658 | }; | |
2659 | ||
2660 | const struct gdb_xml_element thread_children[] = { | |
2661 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2662 | }; | |
2663 | ||
2664 | const struct gdb_xml_element threads_children[] = { | |
2665 | { "thread", thread_attributes, thread_children, | |
2666 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2667 | start_thread, end_thread }, | |
2668 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2669 | }; | |
2670 | ||
2671 | const struct gdb_xml_element threads_elements[] = { | |
2672 | { "threads", NULL, threads_children, | |
2673 | GDB_XML_EF_NONE, NULL, NULL }, | |
2674 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2675 | }; | |
2676 | ||
02357a4a PA |
2677 | /* Discard the contents of the constructed thread info context. */ |
2678 | ||
2679 | static void | |
2680 | clear_threads_parsing_context (void *p) | |
2681 | { | |
2682 | struct threads_parsing_context *context = p; | |
2683 | int i; | |
2684 | struct thread_item *item; | |
2685 | ||
2686 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2687 | xfree (item->extra); | |
2688 | ||
2689 | VEC_free (thread_item_t, context->items); | |
2690 | } | |
2691 | ||
dc146f7c VP |
2692 | #endif |
2693 | ||
9d1f7ab2 MS |
2694 | /* |
2695 | * Find all threads for info threads command. | |
2696 | * Uses new thread protocol contributed by Cisco. | |
2697 | * Falls back and attempts to use the older method (above) | |
2698 | * if the target doesn't respond to the new method. | |
2699 | */ | |
2700 | ||
0f71a2f6 | 2701 | static void |
28439f5e | 2702 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2703 | { |
d01949b6 | 2704 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2705 | char *bufp; |
79d7f229 | 2706 | ptid_t new_thread; |
0f71a2f6 JM |
2707 | |
2708 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2709 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2710 | |
dc146f7c VP |
2711 | #if defined(HAVE_LIBEXPAT) |
2712 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2713 | { | |
2714 | char *xml = target_read_stralloc (¤t_target, | |
2715 | TARGET_OBJECT_THREADS, NULL); | |
2716 | ||
2717 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2718 | |
dc146f7c VP |
2719 | if (xml && *xml) |
2720 | { | |
dc146f7c | 2721 | struct threads_parsing_context context; |
dc146f7c | 2722 | |
efc0eabd PA |
2723 | context.items = NULL; |
2724 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2725 | |
efc0eabd PA |
2726 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2727 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2728 | { |
2729 | int i; | |
2730 | struct thread_item *item; | |
2731 | ||
3e43a32a MS |
2732 | for (i = 0; |
2733 | VEC_iterate (thread_item_t, context.items, i, item); | |
2734 | ++i) | |
dc146f7c VP |
2735 | { |
2736 | if (!ptid_equal (item->ptid, null_ptid)) | |
2737 | { | |
2738 | struct private_thread_info *info; | |
2739 | /* In non-stop mode, we assume new found threads | |
2740 | are running until proven otherwise with a | |
2741 | stop reply. In all-stop, we can only get | |
2742 | here if all threads are stopped. */ | |
2743 | int running = non_stop ? 1 : 0; | |
2744 | ||
2745 | remote_notice_new_inferior (item->ptid, running); | |
2746 | ||
2747 | info = demand_private_info (item->ptid); | |
2748 | info->core = item->core; | |
2749 | info->extra = item->extra; | |
02357a4a | 2750 | item->extra = NULL; |
dc146f7c | 2751 | } |
dc146f7c VP |
2752 | } |
2753 | } | |
dc146f7c VP |
2754 | } |
2755 | ||
2756 | do_cleanups (back_to); | |
2757 | return; | |
2758 | } | |
2759 | #endif | |
2760 | ||
9d1f7ab2 MS |
2761 | if (use_threadinfo_query) |
2762 | { | |
2763 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2764 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2765 | bufp = rs->buf; |
9d1f7ab2 | 2766 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2767 | { |
9d1f7ab2 MS |
2768 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2769 | { | |
2770 | do | |
2771 | { | |
82f73884 | 2772 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2773 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2774 | { |
74531fed | 2775 | /* In non-stop mode, we assume new found threads |
1941c569 | 2776 | are running until proven otherwise with a |
74531fed PA |
2777 | stop reply. In all-stop, we can only get |
2778 | here if all threads are stopped. */ | |
1941c569 PA |
2779 | int running = non_stop ? 1 : 0; |
2780 | ||
2781 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2782 | } |
9d1f7ab2 MS |
2783 | } |
2784 | while (*bufp++ == ','); /* comma-separated list */ | |
2785 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2786 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2787 | bufp = rs->buf; |
9d1f7ab2 MS |
2788 | } |
2789 | return; /* done */ | |
2790 | } | |
2791 | } | |
2792 | ||
74531fed PA |
2793 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2794 | if (non_stop) | |
2795 | return; | |
2796 | ||
23860348 | 2797 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2798 | use_threadinfo_query = 0; |
2799 | remote_find_new_threads (); | |
2800 | return; | |
2801 | } | |
2802 | ||
802188a7 | 2803 | /* |
9d1f7ab2 MS |
2804 | * Collect a descriptive string about the given thread. |
2805 | * The target may say anything it wants to about the thread | |
2806 | * (typically info about its blocked / runnable state, name, etc.). | |
2807 | * This string will appear in the info threads display. | |
802188a7 | 2808 | * |
9d1f7ab2 MS |
2809 | * Optional: targets are not required to implement this function. |
2810 | */ | |
2811 | ||
2812 | static char * | |
2813 | remote_threads_extra_info (struct thread_info *tp) | |
2814 | { | |
d01949b6 | 2815 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2816 | int result; |
2817 | int set; | |
2818 | threadref id; | |
2819 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2820 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2821 | int n = 0; /* position in display_buf */ |
2822 | ||
2823 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2824 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2825 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2826 | |
60e569b9 PA |
2827 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2828 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2829 | /* This is the main thread which was added by GDB. The remote | |
2830 | server doesn't know about it. */ | |
2831 | return NULL; | |
2832 | ||
dc146f7c VP |
2833 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2834 | { | |
2835 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2836 | |
dc146f7c VP |
2837 | if (info && info->private) |
2838 | return info->private->extra; | |
2839 | else | |
2840 | return NULL; | |
2841 | } | |
2842 | ||
9d1f7ab2 MS |
2843 | if (use_threadextra_query) |
2844 | { | |
82f73884 PA |
2845 | char *b = rs->buf; |
2846 | char *endb = rs->buf + get_remote_packet_size (); | |
2847 | ||
2848 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2849 | b += strlen (b); | |
2850 | write_ptid (b, endb, tp->ptid); | |
2851 | ||
2e9f7625 | 2852 | putpkt (rs->buf); |
6d820c5c | 2853 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2854 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2855 | { |
2e9f7625 DJ |
2856 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2857 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2858 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2859 | return display_buf; |
2860 | } | |
0f71a2f6 | 2861 | } |
9d1f7ab2 MS |
2862 | |
2863 | /* If the above query fails, fall back to the old method. */ | |
2864 | use_threadextra_query = 0; | |
2865 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2866 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2867 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2868 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2869 | if (threadinfo.active) | |
0f71a2f6 | 2870 | { |
9d1f7ab2 | 2871 | if (*threadinfo.shortname) |
2bc416ba | 2872 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2873 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2874 | if (*threadinfo.display) |
2bc416ba | 2875 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2876 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2877 | if (*threadinfo.more_display) |
2bc416ba | 2878 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2879 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2880 | |
2881 | if (n > 0) | |
c5aa993b | 2882 | { |
23860348 | 2883 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2884 | if (',' == display_buf[n-1]) |
2885 | display_buf[n-1] = ' '; | |
2886 | return display_buf; | |
c5aa993b | 2887 | } |
0f71a2f6 | 2888 | } |
9d1f7ab2 | 2889 | return NULL; |
0f71a2f6 | 2890 | } |
c906108c | 2891 | \f |
c5aa993b | 2892 | |
0fb4aa4b PA |
2893 | static int |
2894 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2895 | struct static_tracepoint_marker *marker) | |
2896 | { | |
2897 | struct remote_state *rs = get_remote_state (); | |
2898 | char *p = rs->buf; | |
2899 | ||
bba74b36 | 2900 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2901 | p += strlen (p); |
2902 | p += hexnumstr (p, addr); | |
2903 | putpkt (rs->buf); | |
2904 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2905 | p = rs->buf; | |
2906 | ||
2907 | if (*p == 'E') | |
2908 | error (_("Remote failure reply: %s"), p); | |
2909 | ||
2910 | if (*p++ == 'm') | |
2911 | { | |
2912 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2913 | return 1; | |
2914 | } | |
2915 | ||
2916 | return 0; | |
2917 | } | |
2918 | ||
0fb4aa4b PA |
2919 | static VEC(static_tracepoint_marker_p) * |
2920 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2921 | { | |
2922 | struct remote_state *rs = get_remote_state (); | |
2923 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2924 | struct static_tracepoint_marker *marker = NULL; | |
2925 | struct cleanup *old_chain; | |
2926 | char *p; | |
2927 | ||
2928 | /* Ask for a first packet of static tracepoint marker | |
2929 | definition. */ | |
2930 | putpkt ("qTfSTM"); | |
2931 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2932 | p = rs->buf; | |
2933 | if (*p == 'E') | |
2934 | error (_("Remote failure reply: %s"), p); | |
2935 | ||
2936 | old_chain = make_cleanup (free_current_marker, &marker); | |
2937 | ||
2938 | while (*p++ == 'm') | |
2939 | { | |
2940 | if (marker == NULL) | |
2941 | marker = XCNEW (struct static_tracepoint_marker); | |
2942 | ||
2943 | do | |
2944 | { | |
2945 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2946 | ||
2947 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2948 | { | |
2949 | VEC_safe_push (static_tracepoint_marker_p, | |
2950 | markers, marker); | |
2951 | marker = NULL; | |
2952 | } | |
2953 | else | |
2954 | { | |
2955 | release_static_tracepoint_marker (marker); | |
2956 | memset (marker, 0, sizeof (*marker)); | |
2957 | } | |
2958 | } | |
2959 | while (*p++ == ','); /* comma-separated list */ | |
2960 | /* Ask for another packet of static tracepoint definition. */ | |
2961 | putpkt ("qTsSTM"); | |
2962 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2963 | p = rs->buf; | |
2964 | } | |
2965 | ||
2966 | do_cleanups (old_chain); | |
2967 | return markers; | |
2968 | } | |
2969 | ||
2970 | \f | |
10760264 JB |
2971 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2972 | ||
2973 | static ptid_t | |
2974 | remote_get_ada_task_ptid (long lwp, long thread) | |
2975 | { | |
2976 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2977 | } | |
2978 | \f | |
2979 | ||
24b06219 | 2980 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2981 | |
2982 | static void | |
fba45db2 | 2983 | extended_remote_restart (void) |
c906108c | 2984 | { |
d01949b6 | 2985 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2986 | |
2987 | /* Send the restart command; for reasons I don't understand the | |
2988 | remote side really expects a number after the "R". */ | |
ea9c271d | 2989 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2990 | putpkt (rs->buf); |
c906108c | 2991 | |
ad9a8f3f | 2992 | remote_fileio_reset (); |
c906108c SS |
2993 | } |
2994 | \f | |
2995 | /* Clean up connection to a remote debugger. */ | |
2996 | ||
c906108c | 2997 | static void |
fba45db2 | 2998 | remote_close (int quitting) |
c906108c | 2999 | { |
d3fd5342 PA |
3000 | if (remote_desc == NULL) |
3001 | return; /* already closed */ | |
3002 | ||
3003 | /* Make sure we leave stdin registered in the event loop, and we | |
3004 | don't leave the async SIGINT signal handler installed. */ | |
3005 | remote_terminal_ours (); | |
ce5ce7ed | 3006 | |
d3fd5342 PA |
3007 | serial_close (remote_desc); |
3008 | remote_desc = NULL; | |
ce5ce7ed PA |
3009 | |
3010 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3011 | of all the inferiors and their threads we were controlling. |
3012 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3013 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3014 | inferior_ptid = null_ptid; |
f67fd822 | 3015 | discard_all_inferiors (); |
ce5ce7ed | 3016 | |
74531fed PA |
3017 | /* We're no longer interested in any of these events. */ |
3018 | discard_pending_stop_replies (-1); | |
3019 | ||
3020 | if (remote_async_inferior_event_token) | |
3021 | delete_async_event_handler (&remote_async_inferior_event_token); | |
3022 | if (remote_async_get_pending_events_token) | |
3023 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
3024 | } |
3025 | ||
23860348 | 3026 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3027 | |
3028 | static void | |
fba45db2 | 3029 | get_offsets (void) |
c906108c | 3030 | { |
d01949b6 | 3031 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3032 | char *buf; |
085dd6e6 | 3033 | char *ptr; |
31d99776 DJ |
3034 | int lose, num_segments = 0, do_sections, do_segments; |
3035 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3036 | struct section_offsets *offs; |
31d99776 DJ |
3037 | struct symfile_segment_data *data; |
3038 | ||
3039 | if (symfile_objfile == NULL) | |
3040 | return; | |
c906108c SS |
3041 | |
3042 | putpkt ("qOffsets"); | |
6d820c5c | 3043 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3044 | buf = rs->buf; |
c906108c SS |
3045 | |
3046 | if (buf[0] == '\000') | |
3047 | return; /* Return silently. Stub doesn't support | |
23860348 | 3048 | this command. */ |
c906108c SS |
3049 | if (buf[0] == 'E') |
3050 | { | |
8a3fe4f8 | 3051 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3052 | return; |
3053 | } | |
3054 | ||
3055 | /* Pick up each field in turn. This used to be done with scanf, but | |
3056 | scanf will make trouble if CORE_ADDR size doesn't match | |
3057 | conversion directives correctly. The following code will work | |
3058 | with any size of CORE_ADDR. */ | |
3059 | text_addr = data_addr = bss_addr = 0; | |
3060 | ptr = buf; | |
3061 | lose = 0; | |
3062 | ||
3063 | if (strncmp (ptr, "Text=", 5) == 0) | |
3064 | { | |
3065 | ptr += 5; | |
3066 | /* Don't use strtol, could lose on big values. */ | |
3067 | while (*ptr && *ptr != ';') | |
3068 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3069 | |
31d99776 DJ |
3070 | if (strncmp (ptr, ";Data=", 6) == 0) |
3071 | { | |
3072 | ptr += 6; | |
3073 | while (*ptr && *ptr != ';') | |
3074 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3075 | } | |
3076 | else | |
3077 | lose = 1; | |
3078 | ||
3079 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3080 | { | |
3081 | ptr += 5; | |
3082 | while (*ptr && *ptr != ';') | |
3083 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3084 | |
31d99776 DJ |
3085 | if (bss_addr != data_addr) |
3086 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3087 | } | |
3088 | else | |
3089 | lose = 1; | |
3090 | } | |
3091 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3092 | { |
31d99776 DJ |
3093 | ptr += 8; |
3094 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3095 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3096 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3097 | num_segments = 1; | |
3098 | ||
3099 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3100 | { | |
3101 | ptr += 9; | |
3102 | while (*ptr && *ptr != ';') | |
3103 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3104 | num_segments++; | |
3105 | } | |
c906108c SS |
3106 | } |
3107 | else | |
3108 | lose = 1; | |
3109 | ||
3110 | if (lose) | |
8a3fe4f8 | 3111 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3112 | else if (*ptr != '\0') |
3113 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3114 | |
802188a7 | 3115 | offs = ((struct section_offsets *) |
a39a16c4 | 3116 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3117 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3118 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3119 | |
31d99776 DJ |
3120 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3121 | do_segments = (data != NULL); | |
3122 | do_sections = num_segments == 0; | |
c906108c | 3123 | |
28c32713 | 3124 | if (num_segments > 0) |
31d99776 | 3125 | { |
31d99776 DJ |
3126 | segments[0] = text_addr; |
3127 | segments[1] = data_addr; | |
3128 | } | |
28c32713 JB |
3129 | /* If we have two segments, we can still try to relocate everything |
3130 | by assuming that the .text and .data offsets apply to the whole | |
3131 | text and data segments. Convert the offsets given in the packet | |
3132 | to base addresses for symfile_map_offsets_to_segments. */ | |
3133 | else if (data && data->num_segments == 2) | |
3134 | { | |
3135 | segments[0] = data->segment_bases[0] + text_addr; | |
3136 | segments[1] = data->segment_bases[1] + data_addr; | |
3137 | num_segments = 2; | |
3138 | } | |
8d385431 DJ |
3139 | /* If the object file has only one segment, assume that it is text |
3140 | rather than data; main programs with no writable data are rare, | |
3141 | but programs with no code are useless. Of course the code might | |
3142 | have ended up in the data segment... to detect that we would need | |
3143 | the permissions here. */ | |
3144 | else if (data && data->num_segments == 1) | |
3145 | { | |
3146 | segments[0] = data->segment_bases[0] + text_addr; | |
3147 | num_segments = 1; | |
3148 | } | |
28c32713 JB |
3149 | /* There's no way to relocate by segment. */ |
3150 | else | |
3151 | do_segments = 0; | |
31d99776 DJ |
3152 | |
3153 | if (do_segments) | |
3154 | { | |
3155 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3156 | offs, num_segments, segments); | |
3157 | ||
3158 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3159 | error (_("Can not handle qOffsets TextSeg " |
3160 | "response with this symbol file")); | |
31d99776 DJ |
3161 | |
3162 | if (ret > 0) | |
3163 | do_sections = 0; | |
3164 | } | |
c906108c | 3165 | |
9ef895d6 DJ |
3166 | if (data) |
3167 | free_symfile_segment_data (data); | |
31d99776 DJ |
3168 | |
3169 | if (do_sections) | |
3170 | { | |
3171 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3172 | ||
3e43a32a MS |
3173 | /* This is a temporary kludge to force data and bss to use the |
3174 | same offsets because that's what nlmconv does now. The real | |
3175 | solution requires changes to the stub and remote.c that I | |
3176 | don't have time to do right now. */ | |
31d99776 DJ |
3177 | |
3178 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3179 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3180 | } | |
c906108c SS |
3181 | |
3182 | objfile_relocate (symfile_objfile, offs); | |
3183 | } | |
3184 | ||
74531fed PA |
3185 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3186 | threads we know are stopped already. This is used during the | |
3187 | initial remote connection in non-stop mode --- threads that are | |
3188 | reported as already being stopped are left stopped. */ | |
3189 | ||
3190 | static int | |
3191 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3192 | { | |
3193 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3194 | if (peek_stop_reply (thread->ptid)) | |
3195 | set_stop_requested (thread->ptid, 1); | |
3196 | ||
3197 | return 0; | |
3198 | } | |
3199 | ||
9a7071a8 JB |
3200 | /* Send interrupt_sequence to remote target. */ |
3201 | static void | |
eeae04df | 3202 | send_interrupt_sequence (void) |
9a7071a8 JB |
3203 | { |
3204 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3205 | serial_write (remote_desc, "\x03", 1); | |
3206 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3207 | serial_send_break (remote_desc); | |
3208 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3209 | { | |
3210 | serial_send_break (remote_desc); | |
3211 | serial_write (remote_desc, "g", 1); | |
3212 | } | |
3213 | else | |
3214 | internal_error (__FILE__, __LINE__, | |
3215 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3216 | interrupt_sequence_mode); | |
3217 | } | |
3218 | ||
49c62f2e PA |
3219 | /* Query the remote target for which is the current thread/process, |
3220 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3221 | responsible for setting the state such that the remote end is ready | |
3222 | to return the current thread. */ | |
3223 | ||
3224 | static void | |
3225 | add_current_inferior_and_thread (void) | |
3226 | { | |
3227 | struct remote_state *rs = get_remote_state (); | |
3228 | int fake_pid_p = 0; | |
3229 | ptid_t ptid; | |
3230 | ||
3231 | inferior_ptid = null_ptid; | |
3232 | ||
3233 | /* Now, if we have thread information, update inferior_ptid. */ | |
3234 | ptid = remote_current_thread (inferior_ptid); | |
3235 | if (!ptid_equal (ptid, null_ptid)) | |
3236 | { | |
3237 | if (!remote_multi_process_p (rs)) | |
3238 | fake_pid_p = 1; | |
3239 | ||
3240 | inferior_ptid = ptid; | |
3241 | } | |
3242 | else | |
3243 | { | |
3244 | /* Without this, some commands which require an active target | |
3245 | (such as kill) won't work. This variable serves (at least) | |
3246 | double duty as both the pid of the target process (if it has | |
3247 | such), and as a flag indicating that a target is active. */ | |
3248 | inferior_ptid = magic_null_ptid; | |
3249 | fake_pid_p = 1; | |
3250 | } | |
3251 | ||
3252 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3253 | ||
3254 | /* Add the main thread. */ | |
3255 | add_thread_silent (inferior_ptid); | |
3256 | } | |
3257 | ||
9cbc821d | 3258 | static void |
04bd08de | 3259 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3260 | { |
c8d104ad PA |
3261 | struct remote_state *rs = get_remote_state (); |
3262 | struct packet_config *noack_config; | |
2d717e4f | 3263 | char *wait_status = NULL; |
8621d6a9 | 3264 | |
23860348 | 3265 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3266 | |
9a7071a8 JB |
3267 | if (interrupt_on_connect) |
3268 | send_interrupt_sequence (); | |
3269 | ||
57e12211 TT |
3270 | /* Ack any packet which the remote side has already sent. */ |
3271 | serial_write (remote_desc, "+", 1); | |
3272 | ||
1e51243a PA |
3273 | /* Signal other parts that we're going through the initial setup, |
3274 | and so things may not be stable yet. */ | |
3275 | rs->starting_up = 1; | |
3276 | ||
c8d104ad PA |
3277 | /* The first packet we send to the target is the optional "supported |
3278 | packets" request. If the target can answer this, it will tell us | |
3279 | which later probes to skip. */ | |
3280 | remote_query_supported (); | |
3281 | ||
d914c394 SS |
3282 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3283 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3284 | remote_set_permissions (); | |
3285 | ||
c8d104ad PA |
3286 | /* Next, we possibly activate noack mode. |
3287 | ||
3288 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3289 | enable noack mode if the stub reported a wish for it with | |
3290 | qSupported. | |
3291 | ||
3292 | If set to TRUE, then enable noack mode even if the stub didn't | |
3293 | report it in qSupported. If the stub doesn't reply OK, the | |
3294 | session ends with an error. | |
3295 | ||
3296 | If FALSE, then don't activate noack mode, regardless of what the | |
3297 | stub claimed should be the default with qSupported. */ | |
3298 | ||
3299 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3300 | ||
3301 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3302 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3303 | && noack_config->support == PACKET_ENABLE)) | |
3304 | { | |
3305 | putpkt ("QStartNoAckMode"); | |
3306 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3307 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3308 | rs->noack_mode = 1; | |
3309 | } | |
3310 | ||
04bd08de | 3311 | if (extended_p) |
5fe04517 PA |
3312 | { |
3313 | /* Tell the remote that we are using the extended protocol. */ | |
3314 | putpkt ("!"); | |
3315 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3316 | } | |
3317 | ||
9b224c5e PA |
3318 | /* Let the target know which signals it is allowed to pass down to |
3319 | the program. */ | |
3320 | update_signals_program_target (); | |
3321 | ||
d962ef82 DJ |
3322 | /* Next, if the target can specify a description, read it. We do |
3323 | this before anything involving memory or registers. */ | |
3324 | target_find_description (); | |
3325 | ||
6c95b8df PA |
3326 | /* Next, now that we know something about the target, update the |
3327 | address spaces in the program spaces. */ | |
3328 | update_address_spaces (); | |
3329 | ||
50c71eaf PA |
3330 | /* On OSs where the list of libraries is global to all |
3331 | processes, we fetch them early. */ | |
3332 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3333 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3334 | |
74531fed PA |
3335 | if (non_stop) |
3336 | { | |
3337 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3338 | error (_("Non-stop mode requested, but remote " |
3339 | "does not support non-stop")); | |
74531fed PA |
3340 | |
3341 | putpkt ("QNonStop:1"); | |
3342 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3343 | ||
3344 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3345 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3346 | |
3347 | /* Find about threads and processes the stub is already | |
3348 | controlling. We default to adding them in the running state. | |
3349 | The '?' query below will then tell us about which threads are | |
3350 | stopped. */ | |
04bd08de | 3351 | remote_threads_info (target); |
74531fed PA |
3352 | } |
3353 | else if (rs->non_stop_aware) | |
3354 | { | |
3355 | /* Don't assume that the stub can operate in all-stop mode. | |
3356 | Request it explicitely. */ | |
3357 | putpkt ("QNonStop:0"); | |
3358 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3359 | ||
3360 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3361 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3362 | } |
3363 | ||
2d717e4f DJ |
3364 | /* Check whether the target is running now. */ |
3365 | putpkt ("?"); | |
3366 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3367 | ||
74531fed | 3368 | if (!non_stop) |
2d717e4f | 3369 | { |
e714e1bf UW |
3370 | ptid_t ptid; |
3371 | int fake_pid_p = 0; | |
3372 | struct inferior *inf; | |
3373 | ||
74531fed | 3374 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3375 | { |
04bd08de | 3376 | if (!extended_p) |
74531fed | 3377 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3378 | |
3379 | /* We're connected, but not running. Drop out before we | |
3380 | call start_remote. */ | |
e278ad5b | 3381 | rs->starting_up = 0; |
c35b1492 | 3382 | return; |
2d717e4f DJ |
3383 | } |
3384 | else | |
74531fed | 3385 | { |
74531fed PA |
3386 | /* Save the reply for later. */ |
3387 | wait_status = alloca (strlen (rs->buf) + 1); | |
3388 | strcpy (wait_status, rs->buf); | |
3389 | } | |
3390 | ||
3391 | /* Let the stub know that we want it to return the thread. */ | |
3392 | set_continue_thread (minus_one_ptid); | |
3393 | ||
49c62f2e | 3394 | add_current_inferior_and_thread (); |
74531fed | 3395 | |
6e586cc5 YQ |
3396 | /* init_wait_for_inferior should be called before get_offsets in order |
3397 | to manage `inserted' flag in bp loc in a correct state. | |
3398 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3399 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3400 | start_remote, set `inserted' flag to 1. In the initialization of | |
3401 | inferior, breakpoint_init_inferior should be called first, and then | |
3402 | breakpoint_re_set can be called. If this order is broken, state of | |
3403 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3404 | manipulation. */ | |
3405 | init_wait_for_inferior (); | |
3406 | ||
74531fed PA |
3407 | get_offsets (); /* Get text, data & bss offsets. */ |
3408 | ||
d962ef82 DJ |
3409 | /* If we could not find a description using qXfer, and we know |
3410 | how to do it some other way, try again. This is not | |
3411 | supported for non-stop; it could be, but it is tricky if | |
3412 | there are no stopped threads when we connect. */ | |
04bd08de | 3413 | if (remote_read_description_p (target) |
d962ef82 DJ |
3414 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3415 | { | |
3416 | target_clear_description (); | |
3417 | target_find_description (); | |
3418 | } | |
3419 | ||
74531fed PA |
3420 | /* Use the previously fetched status. */ |
3421 | gdb_assert (wait_status != NULL); | |
3422 | strcpy (rs->buf, wait_status); | |
3423 | rs->cached_wait_status = 1; | |
3424 | ||
3425 | immediate_quit--; | |
04bd08de | 3426 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3427 | } |
3428 | else | |
3429 | { | |
68c97600 PA |
3430 | /* Clear WFI global state. Do this before finding about new |
3431 | threads and inferiors, and setting the current inferior. | |
3432 | Otherwise we would clear the proceed status of the current | |
3433 | inferior when we want its stop_soon state to be preserved | |
3434 | (see notice_new_inferior). */ | |
3435 | init_wait_for_inferior (); | |
3436 | ||
74531fed PA |
3437 | /* In non-stop, we will either get an "OK", meaning that there |
3438 | are no stopped threads at this time; or, a regular stop | |
3439 | reply. In the latter case, there may be more than one thread | |
3440 | stopped --- we pull them all out using the vStopped | |
3441 | mechanism. */ | |
3442 | if (strcmp (rs->buf, "OK") != 0) | |
3443 | { | |
3444 | struct stop_reply *stop_reply; | |
3445 | struct cleanup *old_chain; | |
2d717e4f | 3446 | |
74531fed PA |
3447 | stop_reply = stop_reply_xmalloc (); |
3448 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3449 | |
74531fed PA |
3450 | remote_parse_stop_reply (rs->buf, stop_reply); |
3451 | discard_cleanups (old_chain); | |
c0a2216e | 3452 | |
74531fed PA |
3453 | /* get_pending_stop_replies acks this one, and gets the rest |
3454 | out. */ | |
3455 | pending_stop_reply = stop_reply; | |
3456 | remote_get_pending_stop_replies (); | |
c906108c | 3457 | |
74531fed PA |
3458 | /* Make sure that threads that were stopped remain |
3459 | stopped. */ | |
3460 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3461 | } | |
2d717e4f | 3462 | |
74531fed PA |
3463 | if (target_can_async_p ()) |
3464 | target_async (inferior_event_handler, 0); | |
c906108c | 3465 | |
74531fed PA |
3466 | if (thread_count () == 0) |
3467 | { | |
04bd08de | 3468 | if (!extended_p) |
74531fed | 3469 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3470 | |
c35b1492 PA |
3471 | /* We're connected, but not running. Drop out before we |
3472 | call start_remote. */ | |
e278ad5b | 3473 | rs->starting_up = 0; |
c35b1492 PA |
3474 | return; |
3475 | } | |
74531fed PA |
3476 | |
3477 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3478 | |
74531fed PA |
3479 | /* Force the stub to choose a thread. */ |
3480 | set_general_thread (null_ptid); | |
c906108c | 3481 | |
74531fed PA |
3482 | /* Query it. */ |
3483 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3484 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3485 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3486 | |
74531fed PA |
3487 | get_offsets (); /* Get text, data & bss offsets. */ |
3488 | ||
3489 | /* In non-stop mode, any cached wait status will be stored in | |
3490 | the stop reply queue. */ | |
3491 | gdb_assert (wait_status == NULL); | |
f0223081 | 3492 | |
2455069d UW |
3493 | /* Report all signals during attach/startup. */ |
3494 | remote_pass_signals (0, NULL); | |
74531fed | 3495 | } |
c8d104ad | 3496 | |
c8d104ad PA |
3497 | /* If we connected to a live target, do some additional setup. */ |
3498 | if (target_has_execution) | |
3499 | { | |
3500 | if (exec_bfd) /* No use without an exec file. */ | |
3501 | remote_check_symbols (symfile_objfile); | |
3502 | } | |
50c71eaf | 3503 | |
d5551862 SS |
3504 | /* Possibly the target has been engaged in a trace run started |
3505 | previously; find out where things are at. */ | |
26afc0d7 | 3506 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3507 | { |
00bf0b85 SS |
3508 | struct uploaded_tp *uploaded_tps = NULL; |
3509 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3510 | ||
00bf0b85 SS |
3511 | if (current_trace_status ()->running) |
3512 | printf_filtered (_("Trace is already running on the target.\n")); | |
3513 | ||
3514 | /* Get trace state variables first, they may be checked when | |
3515 | parsing uploaded commands. */ | |
3516 | ||
3517 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3518 | ||
3519 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3520 | ||
3521 | remote_upload_tracepoints (&uploaded_tps); | |
3522 | ||
3523 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3524 | } |
3525 | ||
1e51243a PA |
3526 | /* The thread and inferior lists are now synchronized with the |
3527 | target, our symbols have been relocated, and we're merged the | |
3528 | target's tracepoints with ours. We're done with basic start | |
3529 | up. */ | |
3530 | rs->starting_up = 0; | |
3531 | ||
2567c7d9 PA |
3532 | /* If breakpoints are global, insert them now. */ |
3533 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3534 | && breakpoints_always_inserted_mode ()) |
3535 | insert_breakpoints (); | |
c906108c SS |
3536 | } |
3537 | ||
3538 | /* Open a connection to a remote debugger. | |
3539 | NAME is the filename used for communication. */ | |
3540 | ||
3541 | static void | |
fba45db2 | 3542 | remote_open (char *name, int from_tty) |
c906108c | 3543 | { |
75c99385 | 3544 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3545 | } |
3546 | ||
c906108c SS |
3547 | /* Open a connection to a remote debugger using the extended |
3548 | remote gdb protocol. NAME is the filename used for communication. */ | |
3549 | ||
3550 | static void | |
fba45db2 | 3551 | extended_remote_open (char *name, int from_tty) |
c906108c | 3552 | { |
75c99385 | 3553 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3554 | } |
3555 | ||
c906108c SS |
3556 | /* Generic code for opening a connection to a remote target. */ |
3557 | ||
d471ea57 AC |
3558 | static void |
3559 | init_all_packet_configs (void) | |
3560 | { | |
3561 | int i; | |
a744cf53 | 3562 | |
444abaca DJ |
3563 | for (i = 0; i < PACKET_MAX; i++) |
3564 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3565 | } |
3566 | ||
23860348 | 3567 | /* Symbol look-up. */ |
dc8acb97 MS |
3568 | |
3569 | static void | |
3570 | remote_check_symbols (struct objfile *objfile) | |
3571 | { | |
d01949b6 | 3572 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3573 | char *msg, *reply, *tmp; |
3574 | struct minimal_symbol *sym; | |
3575 | int end; | |
3576 | ||
63154eca PA |
3577 | /* The remote side has no concept of inferiors that aren't running |
3578 | yet, it only knows about running processes. If we're connected | |
3579 | but our current inferior is not running, we should not invite the | |
3580 | remote target to request symbol lookups related to its | |
3581 | (unrelated) current process. */ | |
3582 | if (!target_has_execution) | |
3583 | return; | |
3584 | ||
444abaca | 3585 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3586 | return; |
3587 | ||
63154eca PA |
3588 | /* Make sure the remote is pointing at the right process. Note |
3589 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3590 | set_general_process (); |
3591 | ||
6d820c5c DJ |
3592 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3593 | because we need both at the same time. */ | |
ea9c271d | 3594 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3595 | |
23860348 | 3596 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3597 | |
3598 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3599 | getpkt (&rs->buf, &rs->buf_size, 0); |
3600 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3601 | reply = rs->buf; |
dc8acb97 MS |
3602 | |
3603 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3604 | { | |
3605 | tmp = &reply[8]; | |
cfd77fa1 | 3606 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3607 | msg[end] = '\0'; |
3608 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3609 | if (sym == NULL) | |
ea9c271d | 3610 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3611 | else |
2bbe3cc1 | 3612 | { |
5af949e3 | 3613 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3614 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3615 | ||
3616 | /* If this is a function address, return the start of code | |
3617 | instead of any data function descriptor. */ | |
1cf3db46 | 3618 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3619 | sym_addr, |
3620 | ¤t_target); | |
3621 | ||
3622 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3623 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3624 | } |
3625 | ||
dc8acb97 | 3626 | putpkt (msg); |
6d820c5c | 3627 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3628 | reply = rs->buf; |
dc8acb97 MS |
3629 | } |
3630 | } | |
3631 | ||
9db8d71f DJ |
3632 | static struct serial * |
3633 | remote_serial_open (char *name) | |
3634 | { | |
3635 | static int udp_warning = 0; | |
3636 | ||
3637 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3638 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3639 | serial connection is reliable and not the serial connection promising | |
3640 | to be. */ | |
3641 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3642 | { | |
3e43a32a MS |
3643 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3644 | "Some events may be lost, rendering further debugging " | |
3645 | "impossible.")); | |
9db8d71f DJ |
3646 | udp_warning = 1; |
3647 | } | |
3648 | ||
3649 | return serial_open (name); | |
3650 | } | |
3651 | ||
d914c394 SS |
3652 | /* Inform the target of our permission settings. The permission flags |
3653 | work without this, but if the target knows the settings, it can do | |
3654 | a couple things. First, it can add its own check, to catch cases | |
3655 | that somehow manage to get by the permissions checks in target | |
3656 | methods. Second, if the target is wired to disallow particular | |
3657 | settings (for instance, a system in the field that is not set up to | |
3658 | be able to stop at a breakpoint), it can object to any unavailable | |
3659 | permissions. */ | |
3660 | ||
3661 | void | |
3662 | remote_set_permissions (void) | |
3663 | { | |
3664 | struct remote_state *rs = get_remote_state (); | |
3665 | ||
bba74b36 YQ |
3666 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3667 | "WriteReg:%x;WriteMem:%x;" | |
3668 | "InsertBreak:%x;InsertTrace:%x;" | |
3669 | "InsertFastTrace:%x;Stop:%x", | |
3670 | may_write_registers, may_write_memory, | |
3671 | may_insert_breakpoints, may_insert_tracepoints, | |
3672 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3673 | putpkt (rs->buf); |
3674 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3675 | ||
3676 | /* If the target didn't like the packet, warn the user. Do not try | |
3677 | to undo the user's settings, that would just be maddening. */ | |
3678 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3679 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3680 | } |
3681 | ||
be2a5f71 DJ |
3682 | /* This type describes each known response to the qSupported |
3683 | packet. */ | |
3684 | struct protocol_feature | |
3685 | { | |
3686 | /* The name of this protocol feature. */ | |
3687 | const char *name; | |
3688 | ||
3689 | /* The default for this protocol feature. */ | |
3690 | enum packet_support default_support; | |
3691 | ||
3692 | /* The function to call when this feature is reported, or after | |
3693 | qSupported processing if the feature is not supported. | |
3694 | The first argument points to this structure. The second | |
3695 | argument indicates whether the packet requested support be | |
3696 | enabled, disabled, or probed (or the default, if this function | |
3697 | is being called at the end of processing and this feature was | |
3698 | not reported). The third argument may be NULL; if not NULL, it | |
3699 | is a NUL-terminated string taken from the packet following | |
3700 | this feature's name and an equals sign. */ | |
3701 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3702 | const char *); | |
3703 | ||
3704 | /* The corresponding packet for this feature. Only used if | |
3705 | FUNC is remote_supported_packet. */ | |
3706 | int packet; | |
3707 | }; | |
3708 | ||
be2a5f71 DJ |
3709 | static void |
3710 | remote_supported_packet (const struct protocol_feature *feature, | |
3711 | enum packet_support support, | |
3712 | const char *argument) | |
3713 | { | |
3714 | if (argument) | |
3715 | { | |
3716 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3717 | " \"%s\"."), feature->name); | |
3718 | return; | |
3719 | } | |
3720 | ||
3721 | if (remote_protocol_packets[feature->packet].support | |
3722 | == PACKET_SUPPORT_UNKNOWN) | |
3723 | remote_protocol_packets[feature->packet].support = support; | |
3724 | } | |
be2a5f71 DJ |
3725 | |
3726 | static void | |
3727 | remote_packet_size (const struct protocol_feature *feature, | |
3728 | enum packet_support support, const char *value) | |
3729 | { | |
3730 | struct remote_state *rs = get_remote_state (); | |
3731 | ||
3732 | int packet_size; | |
3733 | char *value_end; | |
3734 | ||
3735 | if (support != PACKET_ENABLE) | |
3736 | return; | |
3737 | ||
3738 | if (value == NULL || *value == '\0') | |
3739 | { | |
3740 | warning (_("Remote target reported \"%s\" without a size."), | |
3741 | feature->name); | |
3742 | return; | |
3743 | } | |
3744 | ||
3745 | errno = 0; | |
3746 | packet_size = strtol (value, &value_end, 16); | |
3747 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3748 | { | |
3749 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3750 | feature->name, value); | |
3751 | return; | |
3752 | } | |
3753 | ||
3754 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3755 | { | |
3756 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3757 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3758 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3759 | } | |
3760 | ||
3761 | /* Record the new maximum packet size. */ | |
3762 | rs->explicit_packet_size = packet_size; | |
3763 | } | |
3764 | ||
82f73884 PA |
3765 | static void |
3766 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3767 | enum packet_support support, const char *value) | |
3768 | { | |
3769 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3770 | |
82f73884 PA |
3771 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3772 | } | |
3773 | ||
74531fed PA |
3774 | static void |
3775 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3776 | enum packet_support support, const char *value) | |
3777 | { | |
3778 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3779 | |
74531fed PA |
3780 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3781 | } | |
3782 | ||
782b2b07 SS |
3783 | static void |
3784 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3785 | enum packet_support support, | |
3786 | const char *value) | |
3787 | { | |
3788 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3789 | |
782b2b07 SS |
3790 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3791 | } | |
3792 | ||
3788aec7 LM |
3793 | static void |
3794 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3795 | enum packet_support support, | |
3796 | const char *value) | |
3797 | { | |
3798 | struct remote_state *rs = get_remote_state (); | |
3799 | ||
3800 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3801 | } | |
3802 | ||
7a697b8d SS |
3803 | static void |
3804 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3805 | enum packet_support support, | |
3806 | const char *value) | |
3807 | { | |
3808 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3809 | |
7a697b8d SS |
3810 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3811 | } | |
3812 | ||
0fb4aa4b PA |
3813 | static void |
3814 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3815 | enum packet_support support, | |
3816 | const char *value) | |
3817 | { | |
3818 | struct remote_state *rs = get_remote_state (); | |
3819 | ||
3820 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3821 | } | |
3822 | ||
1e4d1764 YQ |
3823 | static void |
3824 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3825 | enum packet_support support, | |
3826 | const char *value) | |
3827 | { | |
3828 | struct remote_state *rs = get_remote_state (); | |
3829 | ||
3830 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3831 | } | |
3832 | ||
d5551862 SS |
3833 | static void |
3834 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3835 | enum packet_support support, | |
3836 | const char *value) | |
3837 | { | |
3838 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3839 | |
d5551862 SS |
3840 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3841 | } | |
3842 | ||
d248b706 KY |
3843 | static void |
3844 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3845 | enum packet_support support, | |
3846 | const char *value) | |
3847 | { | |
3848 | struct remote_state *rs = get_remote_state (); | |
3849 | ||
3850 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3851 | } | |
3852 | ||
3065dfb6 SS |
3853 | static void |
3854 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3855 | enum packet_support support, | |
3856 | const char *value) | |
3857 | { | |
3858 | struct remote_state *rs = get_remote_state (); | |
3859 | ||
3860 | rs->string_tracing = (support == PACKET_ENABLE); | |
3861 | } | |
3862 | ||
be2a5f71 | 3863 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3864 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3865 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3866 | PACKET_qXfer_auxv }, |
23181151 DJ |
3867 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3868 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3869 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3870 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3871 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3872 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3873 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3874 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3875 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3876 | PACKET_qXfer_spu_read }, | |
3877 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3878 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3879 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3880 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3881 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3882 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3883 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3884 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3885 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3886 | PACKET_QPassSignals }, | |
9b224c5e PA |
3887 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
3888 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
3889 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3890 | PACKET_QStartNoAckMode }, | |
82f73884 | 3891 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3892 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3893 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3894 | PACKET_qXfer_siginfo_read }, | |
3895 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3896 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3897 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3898 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
3899 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
3900 | PACKET_ConditionalBreakpoints }, | |
7a697b8d SS |
3901 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3902 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3903 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3904 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3905 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3906 | PACKET_InstallInTrace}, | |
d5551862 SS |
3907 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3908 | -1 }, | |
40ab02ce MS |
3909 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3910 | PACKET_bc }, | |
3911 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3912 | PACKET_bs }, | |
409873ef SS |
3913 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3914 | PACKET_TracepointSource }, | |
d914c394 SS |
3915 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3916 | PACKET_QAllow }, | |
d248b706 KY |
3917 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3918 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3919 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3920 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
3921 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
3922 | PACKET_qXfer_uib }, | |
03583c20 UW |
3923 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3924 | PACKET_QDisableRandomization }, | |
d1feda86 | 3925 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
3065dfb6 SS |
3926 | { "tracenz", PACKET_DISABLE, |
3927 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3928 | }; |
3929 | ||
c8d5aac9 L |
3930 | static char *remote_support_xml; |
3931 | ||
3932 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3933 | ||
3934 | void | |
6e39997a | 3935 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3936 | { |
3937 | #if defined(HAVE_LIBEXPAT) | |
3938 | if (remote_support_xml == NULL) | |
c4f7c687 | 3939 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3940 | else |
3941 | { | |
3942 | char *copy = xstrdup (remote_support_xml + 13); | |
3943 | char *p = strtok (copy, ","); | |
3944 | ||
3945 | do | |
3946 | { | |
3947 | if (strcmp (p, xml) == 0) | |
3948 | { | |
3949 | /* already there */ | |
3950 | xfree (copy); | |
3951 | return; | |
3952 | } | |
3953 | } | |
3954 | while ((p = strtok (NULL, ",")) != NULL); | |
3955 | xfree (copy); | |
3956 | ||
94b0dee1 PA |
3957 | remote_support_xml = reconcat (remote_support_xml, |
3958 | remote_support_xml, ",", xml, | |
3959 | (char *) NULL); | |
c8d5aac9 L |
3960 | } |
3961 | #endif | |
3962 | } | |
3963 | ||
3964 | static char * | |
3965 | remote_query_supported_append (char *msg, const char *append) | |
3966 | { | |
3967 | if (msg) | |
94b0dee1 | 3968 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3969 | else |
3970 | return xstrdup (append); | |
3971 | } | |
3972 | ||
be2a5f71 DJ |
3973 | static void |
3974 | remote_query_supported (void) | |
3975 | { | |
3976 | struct remote_state *rs = get_remote_state (); | |
3977 | char *next; | |
3978 | int i; | |
3979 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3980 | ||
3981 | /* The packet support flags are handled differently for this packet | |
3982 | than for most others. We treat an error, a disabled packet, and | |
3983 | an empty response identically: any features which must be reported | |
3984 | to be used will be automatically disabled. An empty buffer | |
3985 | accomplishes this, since that is also the representation for a list | |
3986 | containing no features. */ | |
3987 | ||
3988 | rs->buf[0] = 0; | |
3989 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3990 | { | |
c8d5aac9 | 3991 | char *q = NULL; |
94b0dee1 | 3992 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 3993 | |
901f9912 | 3994 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
3995 | |
3996 | if (remote_support_xml) | |
3997 | q = remote_query_supported_append (q, remote_support_xml); | |
3998 | ||
dde08ee1 PA |
3999 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4000 | ||
4001 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4002 | putpkt (q); | |
82f73884 | 4003 | |
94b0dee1 PA |
4004 | do_cleanups (old_chain); |
4005 | ||
be2a5f71 DJ |
4006 | getpkt (&rs->buf, &rs->buf_size, 0); |
4007 | ||
4008 | /* If an error occured, warn, but do not return - just reset the | |
4009 | buffer to empty and go on to disable features. */ | |
4010 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4011 | == PACKET_ERROR) | |
4012 | { | |
4013 | warning (_("Remote failure reply: %s"), rs->buf); | |
4014 | rs->buf[0] = 0; | |
4015 | } | |
4016 | } | |
4017 | ||
4018 | memset (seen, 0, sizeof (seen)); | |
4019 | ||
4020 | next = rs->buf; | |
4021 | while (*next) | |
4022 | { | |
4023 | enum packet_support is_supported; | |
4024 | char *p, *end, *name_end, *value; | |
4025 | ||
4026 | /* First separate out this item from the rest of the packet. If | |
4027 | there's another item after this, we overwrite the separator | |
4028 | (terminated strings are much easier to work with). */ | |
4029 | p = next; | |
4030 | end = strchr (p, ';'); | |
4031 | if (end == NULL) | |
4032 | { | |
4033 | end = p + strlen (p); | |
4034 | next = end; | |
4035 | } | |
4036 | else | |
4037 | { | |
89be2091 DJ |
4038 | *end = '\0'; |
4039 | next = end + 1; | |
4040 | ||
be2a5f71 DJ |
4041 | if (end == p) |
4042 | { | |
4043 | warning (_("empty item in \"qSupported\" response")); | |
4044 | continue; | |
4045 | } | |
be2a5f71 DJ |
4046 | } |
4047 | ||
4048 | name_end = strchr (p, '='); | |
4049 | if (name_end) | |
4050 | { | |
4051 | /* This is a name=value entry. */ | |
4052 | is_supported = PACKET_ENABLE; | |
4053 | value = name_end + 1; | |
4054 | *name_end = '\0'; | |
4055 | } | |
4056 | else | |
4057 | { | |
4058 | value = NULL; | |
4059 | switch (end[-1]) | |
4060 | { | |
4061 | case '+': | |
4062 | is_supported = PACKET_ENABLE; | |
4063 | break; | |
4064 | ||
4065 | case '-': | |
4066 | is_supported = PACKET_DISABLE; | |
4067 | break; | |
4068 | ||
4069 | case '?': | |
4070 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4071 | break; | |
4072 | ||
4073 | default: | |
3e43a32a MS |
4074 | warning (_("unrecognized item \"%s\" " |
4075 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4076 | continue; |
4077 | } | |
4078 | end[-1] = '\0'; | |
4079 | } | |
4080 | ||
4081 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4082 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4083 | { | |
4084 | const struct protocol_feature *feature; | |
4085 | ||
4086 | seen[i] = 1; | |
4087 | feature = &remote_protocol_features[i]; | |
4088 | feature->func (feature, is_supported, value); | |
4089 | break; | |
4090 | } | |
4091 | } | |
4092 | ||
4093 | /* If we increased the packet size, make sure to increase the global | |
4094 | buffer size also. We delay this until after parsing the entire | |
4095 | qSupported packet, because this is the same buffer we were | |
4096 | parsing. */ | |
4097 | if (rs->buf_size < rs->explicit_packet_size) | |
4098 | { | |
4099 | rs->buf_size = rs->explicit_packet_size; | |
4100 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4101 | } | |
4102 | ||
4103 | /* Handle the defaults for unmentioned features. */ | |
4104 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4105 | if (!seen[i]) | |
4106 | { | |
4107 | const struct protocol_feature *feature; | |
4108 | ||
4109 | feature = &remote_protocol_features[i]; | |
4110 | feature->func (feature, feature->default_support, NULL); | |
4111 | } | |
4112 | } | |
4113 | ||
4114 | ||
c906108c | 4115 | static void |
3e43a32a MS |
4116 | remote_open_1 (char *name, int from_tty, |
4117 | struct target_ops *target, int extended_p) | |
c906108c | 4118 | { |
d01949b6 | 4119 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4120 | |
c906108c | 4121 | if (name == 0) |
8a3fe4f8 | 4122 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4123 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4124 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4125 | |
23860348 | 4126 | /* See FIXME above. */ |
c6ebd6cf | 4127 | if (!target_async_permitted) |
92d1e331 | 4128 | wait_forever_enabled_p = 1; |
6426a772 | 4129 | |
2d717e4f DJ |
4130 | /* If we're connected to a running target, target_preopen will kill it. |
4131 | But if we're connected to a target system with no running process, | |
4132 | then we will still be connected when it returns. Ask this question | |
4133 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4134 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4135 | { |
4136 | if (!from_tty | |
4137 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4138 | pop_target (); | |
4139 | else | |
4140 | error (_("Still connected.")); | |
4141 | } | |
4142 | ||
c906108c SS |
4143 | target_preopen (from_tty); |
4144 | ||
4145 | unpush_target (target); | |
4146 | ||
2d717e4f DJ |
4147 | /* This time without a query. If we were connected to an |
4148 | extended-remote target and target_preopen killed the running | |
4149 | process, we may still be connected. If we are starting "target | |
4150 | remote" now, the extended-remote target will not have been | |
4151 | removed by unpush_target. */ | |
c35b1492 | 4152 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4153 | pop_target (); |
4154 | ||
89be2091 DJ |
4155 | /* Make sure we send the passed signals list the next time we resume. */ |
4156 | xfree (last_pass_packet); | |
4157 | last_pass_packet = NULL; | |
4158 | ||
9b224c5e PA |
4159 | /* Make sure we send the program signals list the next time we |
4160 | resume. */ | |
4161 | xfree (last_program_signals_packet); | |
4162 | last_program_signals_packet = NULL; | |
4163 | ||
ad9a8f3f | 4164 | remote_fileio_reset (); |
1dd41f16 NS |
4165 | reopen_exec_file (); |
4166 | reread_symbols (); | |
4167 | ||
9db8d71f | 4168 | remote_desc = remote_serial_open (name); |
c906108c SS |
4169 | if (!remote_desc) |
4170 | perror_with_name (name); | |
4171 | ||
4172 | if (baud_rate != -1) | |
4173 | { | |
2cd58942 | 4174 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4175 | { |
9b74d5d3 KB |
4176 | /* The requested speed could not be set. Error out to |
4177 | top level after closing remote_desc. Take care to | |
4178 | set remote_desc to NULL to avoid closing remote_desc | |
4179 | more than once. */ | |
2cd58942 | 4180 | serial_close (remote_desc); |
9b74d5d3 | 4181 | remote_desc = NULL; |
c906108c SS |
4182 | perror_with_name (name); |
4183 | } | |
4184 | } | |
4185 | ||
2cd58942 | 4186 | serial_raw (remote_desc); |
c906108c SS |
4187 | |
4188 | /* If there is something sitting in the buffer we might take it as a | |
4189 | response to a command, which would be bad. */ | |
2cd58942 | 4190 | serial_flush_input (remote_desc); |
c906108c SS |
4191 | |
4192 | if (from_tty) | |
4193 | { | |
4194 | puts_filtered ("Remote debugging using "); | |
4195 | puts_filtered (name); | |
4196 | puts_filtered ("\n"); | |
4197 | } | |
23860348 | 4198 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4199 | |
74531fed PA |
4200 | /* Register extra event sources in the event loop. */ |
4201 | remote_async_inferior_event_token | |
4202 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4203 | NULL); | |
4204 | remote_async_get_pending_events_token | |
4205 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4206 | NULL); | |
4207 | ||
be2a5f71 DJ |
4208 | /* Reset the target state; these things will be queried either by |
4209 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4210 | init_all_packet_configs (); |
74531fed | 4211 | rs->cached_wait_status = 0; |
be2a5f71 | 4212 | rs->explicit_packet_size = 0; |
a6f3e723 | 4213 | rs->noack_mode = 0; |
82f73884 PA |
4214 | rs->multi_process_aware = 0; |
4215 | rs->extended = extended_p; | |
74531fed | 4216 | rs->non_stop_aware = 0; |
e24a49d8 | 4217 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4218 | rs->ctrlc_pending_p = 0; |
802188a7 | 4219 | |
79d7f229 PA |
4220 | general_thread = not_sent_ptid; |
4221 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4222 | remote_traceframe_number = -1; |
c906108c | 4223 | |
9d1f7ab2 MS |
4224 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4225 | use_threadinfo_query = 1; | |
4226 | use_threadextra_query = 1; | |
4227 | ||
c6ebd6cf | 4228 | if (target_async_permitted) |
92d1e331 | 4229 | { |
23860348 | 4230 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4231 | remote_async_terminal_ours_p = 1; |
4232 | ||
4233 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4234 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4235 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4236 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4237 | around this. Eventually a mechanism that allows |
92d1e331 | 4238 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4239 | implemented. */ |
92d1e331 DJ |
4240 | wait_forever_enabled_p = 0; |
4241 | } | |
4242 | ||
23860348 | 4243 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4244 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4245 | |
74531fed PA |
4246 | /* Start afresh. */ |
4247 | init_thread_list (); | |
4248 | ||
36918e70 | 4249 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4250 | target (we'd otherwise be in an inconsistent state) and then |
4251 | propogate the error on up the exception chain. This ensures that | |
4252 | the caller doesn't stumble along blindly assuming that the | |
4253 | function succeeded. The CLI doesn't have this problem but other | |
4254 | UI's, such as MI do. | |
36918e70 AC |
4255 | |
4256 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4257 | this function should return an error indication letting the | |
ce2826aa | 4258 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4259 | ``target remote'' is directly wired to this function making that |
4260 | impossible. On a positive note, the CLI side of this problem has | |
4261 | been fixed - the function set_cmd_context() makes it possible for | |
4262 | all the ``target ....'' commands to share a common callback | |
4263 | function. See cli-dump.c. */ | |
109c3e39 | 4264 | { |
04bd08de | 4265 | volatile struct gdb_exception ex; |
2d717e4f | 4266 | |
04bd08de TT |
4267 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4268 | { | |
4269 | remote_start_remote (from_tty, target, extended_p); | |
4270 | } | |
109c3e39 AC |
4271 | if (ex.reason < 0) |
4272 | { | |
c8d104ad PA |
4273 | /* Pop the partially set up target - unless something else did |
4274 | already before throwing the exception. */ | |
4275 | if (remote_desc != NULL) | |
4276 | pop_target (); | |
c6ebd6cf | 4277 | if (target_async_permitted) |
109c3e39 AC |
4278 | wait_forever_enabled_p = 1; |
4279 | throw_exception (ex); | |
4280 | } | |
4281 | } | |
c906108c | 4282 | |
c6ebd6cf | 4283 | if (target_async_permitted) |
92d1e331 | 4284 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4285 | } |
4286 | ||
c906108c SS |
4287 | /* This takes a program previously attached to and detaches it. After |
4288 | this is done, GDB can be used to debug some other program. We | |
4289 | better not have left any breakpoints in the target program or it'll | |
4290 | die when it hits one. */ | |
4291 | ||
4292 | static void | |
2d717e4f | 4293 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4294 | { |
82f73884 | 4295 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4296 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4297 | |
4298 | if (args) | |
8a3fe4f8 | 4299 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4300 | |
2d717e4f DJ |
4301 | if (!target_has_execution) |
4302 | error (_("No process to detach from.")); | |
4303 | ||
7cee1e54 PA |
4304 | if (from_tty) |
4305 | { | |
4306 | char *exec_file = get_exec_file (0); | |
4307 | if (exec_file == NULL) | |
4308 | exec_file = ""; | |
4309 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4310 | target_pid_to_str (pid_to_ptid (pid))); | |
4311 | gdb_flush (gdb_stdout); | |
4312 | } | |
4313 | ||
c906108c | 4314 | /* Tell the remote target to detach. */ |
82f73884 | 4315 | if (remote_multi_process_p (rs)) |
bba74b36 | 4316 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4317 | else |
4318 | strcpy (rs->buf, "D"); | |
4319 | ||
4ddda9b5 PA |
4320 | putpkt (rs->buf); |
4321 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4322 | ||
82f73884 PA |
4323 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4324 | ; | |
4325 | else if (rs->buf[0] == '\0') | |
4326 | error (_("Remote doesn't know how to detach")); | |
4327 | else | |
4ddda9b5 | 4328 | error (_("Can't detach process.")); |
c906108c | 4329 | |
7cee1e54 PA |
4330 | if (from_tty && !extended) |
4331 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4332 | |
74531fed | 4333 | discard_pending_stop_replies (pid); |
82f73884 | 4334 | target_mourn_inferior (); |
2d717e4f DJ |
4335 | } |
4336 | ||
4337 | static void | |
136d6dae | 4338 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4339 | { |
4340 | remote_detach_1 (args, from_tty, 0); | |
4341 | } | |
4342 | ||
4343 | static void | |
136d6dae | 4344 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4345 | { |
4346 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4347 | } |
4348 | ||
6ad8ae5c DJ |
4349 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4350 | ||
43ff13b4 | 4351 | static void |
597320e7 | 4352 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4353 | { |
43ff13b4 | 4354 | if (args) |
2d717e4f | 4355 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4356 | |
2d717e4f DJ |
4357 | /* Make sure we unpush even the extended remote targets; mourn |
4358 | won't do it. So call remote_mourn_1 directly instead of | |
4359 | target_mourn_inferior. */ | |
4360 | remote_mourn_1 (target); | |
4361 | ||
43ff13b4 JM |
4362 | if (from_tty) |
4363 | puts_filtered ("Ending remote debugging.\n"); | |
4364 | } | |
4365 | ||
2d717e4f DJ |
4366 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4367 | be chatty about it. */ | |
4368 | ||
4369 | static void | |
4370 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4371 | { | |
4372 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4373 | int pid; |
96ef3384 | 4374 | char *wait_status = NULL; |
2d717e4f | 4375 | |
74164c56 | 4376 | pid = parse_pid_to_attach (args); |
2d717e4f | 4377 | |
74164c56 JK |
4378 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4379 | way as in other targets. */ | |
2d717e4f DJ |
4380 | |
4381 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4382 | error (_("This target does not support attaching to a process")); | |
4383 | ||
7cee1e54 PA |
4384 | if (from_tty) |
4385 | { | |
4386 | char *exec_file = get_exec_file (0); | |
4387 | ||
4388 | if (exec_file) | |
4389 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4390 | target_pid_to_str (pid_to_ptid (pid))); | |
4391 | else | |
4392 | printf_unfiltered (_("Attaching to %s\n"), | |
4393 | target_pid_to_str (pid_to_ptid (pid))); | |
4394 | ||
4395 | gdb_flush (gdb_stdout); | |
4396 | } | |
4397 | ||
bba74b36 | 4398 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4399 | putpkt (rs->buf); |
4400 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4401 | ||
3e43a32a MS |
4402 | if (packet_ok (rs->buf, |
4403 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4404 | { |
74531fed PA |
4405 | if (!non_stop) |
4406 | { | |
4407 | /* Save the reply for later. */ | |
4408 | wait_status = alloca (strlen (rs->buf) + 1); | |
4409 | strcpy (wait_status, rs->buf); | |
4410 | } | |
4411 | else if (strcmp (rs->buf, "OK") != 0) | |
4412 | error (_("Attaching to %s failed with: %s"), | |
4413 | target_pid_to_str (pid_to_ptid (pid)), | |
4414 | rs->buf); | |
2d717e4f DJ |
4415 | } |
4416 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4417 | error (_("This target does not support attaching to a process")); | |
4418 | else | |
4419 | error (_("Attaching to %s failed"), | |
4420 | target_pid_to_str (pid_to_ptid (pid))); | |
4421 | ||
49c62f2e | 4422 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4423 | |
2d717e4f | 4424 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4425 | |
bad34192 PA |
4426 | if (non_stop) |
4427 | { | |
4428 | struct thread_info *thread; | |
79d7f229 | 4429 | |
bad34192 PA |
4430 | /* Get list of threads. */ |
4431 | remote_threads_info (target); | |
82f73884 | 4432 | |
bad34192 PA |
4433 | thread = first_thread_of_process (pid); |
4434 | if (thread) | |
4435 | inferior_ptid = thread->ptid; | |
4436 | else | |
4437 | inferior_ptid = pid_to_ptid (pid); | |
4438 | ||
4439 | /* Invalidate our notion of the remote current thread. */ | |
4440 | record_currthread (minus_one_ptid); | |
4441 | } | |
74531fed | 4442 | else |
bad34192 PA |
4443 | { |
4444 | /* Now, if we have thread information, update inferior_ptid. */ | |
4445 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4446 | ||
4447 | /* Add the main thread to the thread list. */ | |
4448 | add_thread_silent (inferior_ptid); | |
4449 | } | |
c0a2216e | 4450 | |
96ef3384 UW |
4451 | /* Next, if the target can specify a description, read it. We do |
4452 | this before anything involving memory or registers. */ | |
4453 | target_find_description (); | |
4454 | ||
74531fed PA |
4455 | if (!non_stop) |
4456 | { | |
4457 | /* Use the previously fetched status. */ | |
4458 | gdb_assert (wait_status != NULL); | |
4459 | ||
4460 | if (target_can_async_p ()) | |
4461 | { | |
4462 | struct stop_reply *stop_reply; | |
4463 | struct cleanup *old_chain; | |
4464 | ||
4465 | stop_reply = stop_reply_xmalloc (); | |
4466 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4467 | remote_parse_stop_reply (wait_status, stop_reply); | |
4468 | discard_cleanups (old_chain); | |
4469 | push_stop_reply (stop_reply); | |
4470 | ||
4471 | target_async (inferior_event_handler, 0); | |
4472 | } | |
4473 | else | |
4474 | { | |
4475 | gdb_assert (wait_status != NULL); | |
4476 | strcpy (rs->buf, wait_status); | |
4477 | rs->cached_wait_status = 1; | |
4478 | } | |
4479 | } | |
4480 | else | |
4481 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4482 | } |
4483 | ||
4484 | static void | |
136d6dae | 4485 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4486 | { |
136d6dae | 4487 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4488 | } |
4489 | ||
c906108c SS |
4490 | /* Convert hex digit A to a number. */ |
4491 | ||
30559e10 | 4492 | static int |
fba45db2 | 4493 | fromhex (int a) |
c906108c SS |
4494 | { |
4495 | if (a >= '0' && a <= '9') | |
4496 | return a - '0'; | |
4497 | else if (a >= 'a' && a <= 'f') | |
4498 | return a - 'a' + 10; | |
4499 | else if (a >= 'A' && a <= 'F') | |
4500 | return a - 'A' + 10; | |
c5aa993b | 4501 | else |
8a3fe4f8 | 4502 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4503 | } |
4504 | ||
00bf0b85 | 4505 | int |
cfd77fa1 | 4506 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4507 | { |
4508 | int i; | |
4509 | ||
30559e10 MS |
4510 | for (i = 0; i < count; i++) |
4511 | { | |
4512 | if (hex[0] == 0 || hex[1] == 0) | |
4513 | { | |
4514 | /* Hex string is short, or of uneven length. | |
23860348 | 4515 | Return the count that has been converted so far. */ |
30559e10 MS |
4516 | return i; |
4517 | } | |
4518 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4519 | hex += 2; | |
4520 | } | |
4521 | return i; | |
4522 | } | |
4523 | ||
c906108c SS |
4524 | /* Convert number NIB to a hex digit. */ |
4525 | ||
4526 | static int | |
fba45db2 | 4527 | tohex (int nib) |
c906108c SS |
4528 | { |
4529 | if (nib < 10) | |
c5aa993b | 4530 | return '0' + nib; |
c906108c | 4531 | else |
c5aa993b | 4532 | return 'a' + nib - 10; |
c906108c | 4533 | } |
30559e10 | 4534 | |
00bf0b85 | 4535 | int |
cfd77fa1 | 4536 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4537 | { |
4538 | int i; | |
a744cf53 | 4539 | |
23860348 | 4540 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4541 | if (count == 0) |
cfd77fa1 | 4542 | count = strlen ((char *) bin); |
30559e10 MS |
4543 | |
4544 | for (i = 0; i < count; i++) | |
4545 | { | |
4546 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4547 | *hex++ = tohex (*bin++ & 0xf); | |
4548 | } | |
4549 | *hex = 0; | |
4550 | return i; | |
4551 | } | |
c906108c | 4552 | \f |
506fb367 DJ |
4553 | /* Check for the availability of vCont. This function should also check |
4554 | the response. */ | |
c906108c SS |
4555 | |
4556 | static void | |
6d820c5c | 4557 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4558 | { |
2e9f7625 | 4559 | char *buf; |
6d820c5c | 4560 | |
2e9f7625 DJ |
4561 | strcpy (rs->buf, "vCont?"); |
4562 | putpkt (rs->buf); | |
6d820c5c | 4563 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4564 | buf = rs->buf; |
c906108c | 4565 | |
506fb367 DJ |
4566 | /* Make sure that the features we assume are supported. */ |
4567 | if (strncmp (buf, "vCont", 5) == 0) | |
4568 | { | |
4569 | char *p = &buf[5]; | |
4570 | int support_s, support_S, support_c, support_C; | |
4571 | ||
4572 | support_s = 0; | |
4573 | support_S = 0; | |
4574 | support_c = 0; | |
4575 | support_C = 0; | |
74531fed | 4576 | rs->support_vCont_t = 0; |
506fb367 DJ |
4577 | while (p && *p == ';') |
4578 | { | |
4579 | p++; | |
4580 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4581 | support_s = 1; | |
4582 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4583 | support_S = 1; | |
4584 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4585 | support_c = 1; | |
4586 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4587 | support_C = 1; | |
74531fed PA |
4588 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4589 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4590 | |
4591 | p = strchr (p, ';'); | |
4592 | } | |
c906108c | 4593 | |
506fb367 DJ |
4594 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4595 | BUF will make packet_ok disable the packet. */ | |
4596 | if (!support_s || !support_S || !support_c || !support_C) | |
4597 | buf[0] = 0; | |
4598 | } | |
c906108c | 4599 | |
444abaca | 4600 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4601 | } |
c906108c | 4602 | |
0d8f58ca PA |
4603 | /* Helper function for building "vCont" resumptions. Write a |
4604 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4605 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4606 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4607 | resumed thread should be single-stepped and/or signalled. If PTID | |
4608 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4609 | represents a process, then all threads of the process are resumed; | |
4610 | the thread to be stepped and/or signalled is given in the global | |
4611 | INFERIOR_PTID. */ | |
4612 | ||
4613 | static char * | |
4614 | append_resumption (char *p, char *endp, | |
2ea28649 | 4615 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4616 | { |
4617 | struct remote_state *rs = get_remote_state (); | |
4618 | ||
a493e3e2 | 4619 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4620 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
4621 | else if (step) | |
4622 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4623 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4624 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4625 | else | |
4626 | p += xsnprintf (p, endp - p, ";c"); | |
4627 | ||
4628 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4629 | { | |
4630 | ptid_t nptid; | |
4631 | ||
4632 | /* All (-1) threads of process. */ | |
4633 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4634 | ||
4635 | p += xsnprintf (p, endp - p, ":"); | |
4636 | p = write_ptid (p, endp, nptid); | |
4637 | } | |
4638 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4639 | { | |
4640 | p += xsnprintf (p, endp - p, ":"); | |
4641 | p = write_ptid (p, endp, ptid); | |
4642 | } | |
4643 | ||
4644 | return p; | |
4645 | } | |
4646 | ||
e5ef252a PA |
4647 | /* Append a vCont continue-with-signal action for threads that have a |
4648 | non-zero stop signal. */ | |
4649 | ||
4650 | static char * | |
4651 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4652 | { | |
4653 | struct thread_info *thread; | |
4654 | ||
4655 | ALL_THREADS (thread) | |
4656 | if (ptid_match (thread->ptid, ptid) | |
4657 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4658 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4659 | && signal_pass_state (thread->suspend.stop_signal)) | |
4660 | { | |
4661 | p = append_resumption (p, endp, thread->ptid, | |
4662 | 0, thread->suspend.stop_signal); | |
4663 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4664 | } | |
4665 | ||
4666 | return p; | |
4667 | } | |
4668 | ||
506fb367 DJ |
4669 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4670 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4671 | resumed thread should be single-stepped and/or signalled. If PTID |
4672 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4673 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4674 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4675 | |
506fb367 DJ |
4676 | This function issues a strict subset of all possible vCont commands at the |
4677 | moment. */ | |
44eaed12 | 4678 | |
506fb367 | 4679 | static int |
2ea28649 | 4680 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4681 | { |
4682 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4683 | char *p; |
4684 | char *endp; | |
44eaed12 | 4685 | |
444abaca | 4686 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4687 | remote_vcont_probe (rs); |
44eaed12 | 4688 | |
444abaca | 4689 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4690 | return 0; |
44eaed12 | 4691 | |
82f73884 PA |
4692 | p = rs->buf; |
4693 | endp = rs->buf + get_remote_packet_size (); | |
4694 | ||
506fb367 DJ |
4695 | /* If we could generate a wider range of packets, we'd have to worry |
4696 | about overflowing BUF. Should there be a generic | |
4697 | "multi-part-packet" packet? */ | |
4698 | ||
0d8f58ca PA |
4699 | p += xsnprintf (p, endp - p, "vCont"); |
4700 | ||
79d7f229 | 4701 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4702 | { |
79d7f229 PA |
4703 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4704 | so we don't have any TID numbers the inferior will | |
4705 | understand. Make sure to only send forms that do not specify | |
4706 | a TID. */ | |
a9cbf802 | 4707 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4708 | } |
0d8f58ca | 4709 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4710 | { |
0d8f58ca PA |
4711 | /* Resume all threads (of all processes, or of a single |
4712 | process), with preference for INFERIOR_PTID. This assumes | |
4713 | inferior_ptid belongs to the set of all threads we are about | |
4714 | to resume. */ | |
a493e3e2 | 4715 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4716 | { |
0d8f58ca PA |
4717 | /* Step inferior_ptid, with or without signal. */ |
4718 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4719 | } |
0d8f58ca | 4720 | |
e5ef252a PA |
4721 | /* Also pass down any pending signaled resumption for other |
4722 | threads not the current. */ | |
4723 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4724 | ||
0d8f58ca | 4725 | /* And continue others without a signal. */ |
a493e3e2 | 4726 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4727 | } |
4728 | else | |
506fb367 DJ |
4729 | { |
4730 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4731 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4732 | } |
c906108c | 4733 | |
82f73884 PA |
4734 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4735 | putpkt (rs->buf); | |
506fb367 | 4736 | |
74531fed PA |
4737 | if (non_stop) |
4738 | { | |
4739 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4740 | reply will be reported asynchronously by means of a `%Stop' | |
4741 | notification. */ | |
4742 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4743 | if (strcmp (rs->buf, "OK") != 0) | |
4744 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4745 | } | |
4746 | ||
506fb367 | 4747 | return 1; |
c906108c | 4748 | } |
43ff13b4 | 4749 | |
506fb367 DJ |
4750 | /* Tell the remote machine to resume. */ |
4751 | ||
a493e3e2 | 4752 | static enum gdb_signal last_sent_signal = GDB_SIGNAL_0; |
506fb367 DJ |
4753 | |
4754 | static int last_sent_step; | |
4755 | ||
43ff13b4 | 4756 | static void |
28439f5e | 4757 | remote_resume (struct target_ops *ops, |
2ea28649 | 4758 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4759 | { |
d01949b6 | 4760 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4761 | char *buf; |
43ff13b4 | 4762 | |
43ff13b4 JM |
4763 | last_sent_signal = siggnal; |
4764 | last_sent_step = step; | |
4765 | ||
506fb367 | 4766 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4767 | /* No reverse support (yet) for vCont. */ |
4768 | if (execution_direction != EXEC_REVERSE) | |
4769 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4770 | goto done; | |
506fb367 | 4771 | |
79d7f229 PA |
4772 | /* All other supported resume packets do use Hc, so set the continue |
4773 | thread. */ | |
4774 | if (ptid_equal (ptid, minus_one_ptid)) | |
4775 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4776 | else |
79d7f229 | 4777 | set_continue_thread (ptid); |
506fb367 | 4778 | |
2e9f7625 | 4779 | buf = rs->buf; |
b2175913 MS |
4780 | if (execution_direction == EXEC_REVERSE) |
4781 | { | |
4782 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4783 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4784 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4785 | siggnal); |
40ab02ce MS |
4786 | |
4787 | if (step | |
4788 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4789 | error (_("Remote reverse-step not supported.")); | |
4790 | if (!step | |
4791 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4792 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4793 | |
b2175913 MS |
4794 | strcpy (buf, step ? "bs" : "bc"); |
4795 | } | |
a493e3e2 | 4796 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4797 | { |
4798 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4799 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4800 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4801 | buf[3] = '\0'; |
4802 | } | |
4803 | else | |
c5aa993b | 4804 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4805 | |
44eaed12 | 4806 | putpkt (buf); |
43ff13b4 | 4807 | |
75c99385 | 4808 | done: |
2acceee2 | 4809 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4810 | with the event loop. NOTE: this is the one place where all the |
4811 | execution commands end up. We could alternatively do this in each | |
23860348 | 4812 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4813 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4814 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4815 | NOT asynchronously. */ |
362646f5 | 4816 | if (target_can_async_p ()) |
2acceee2 | 4817 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4818 | |
4819 | /* We've just told the target to resume. The remote server will | |
4820 | wait for the inferior to stop, and then send a stop reply. In | |
4821 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4822 | because the stub wouldn't be ready to process it. This applies |
4823 | only to the base all-stop protocol, however. In non-stop (which | |
4824 | only supports vCont), the stub replies with an "OK", and is | |
4825 | immediate able to process further serial input. */ | |
4826 | if (!non_stop) | |
4827 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4828 | } |
c906108c | 4829 | \f |
43ff13b4 JM |
4830 | |
4831 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4832 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4833 | static void |
fba45db2 | 4834 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4835 | { |
43ff13b4 JM |
4836 | signal (SIGINT, handle_remote_sigint); |
4837 | } | |
4838 | ||
23860348 | 4839 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4840 | static void |
fba45db2 | 4841 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4842 | { |
4843 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4844 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4845 | } | |
4846 | ||
4847 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4848 | sent once. It will take effect the second time that the user sends | |
23860348 | 4849 | a ^C. */ |
43ff13b4 | 4850 | static void |
fba45db2 | 4851 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4852 | { |
b803fb0f | 4853 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4854 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4855 | } | |
4856 | ||
6426a772 | 4857 | /* Perform the real interruption of the target execution, in response |
23860348 | 4858 | to a ^C. */ |
c5aa993b | 4859 | static void |
fba45db2 | 4860 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4861 | { |
4862 | if (remote_debug) | |
248fd3bf | 4863 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4864 | |
94cc34af | 4865 | target_stop (inferior_ptid); |
43ff13b4 JM |
4866 | } |
4867 | ||
0df8b418 | 4868 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4869 | up on the target alltogether. */ |
2df3850c | 4870 | void |
fba45db2 | 4871 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4872 | { |
2df3850c | 4873 | if (remote_debug) |
248fd3bf | 4874 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4875 | |
4876 | interrupt_query (); | |
43ff13b4 JM |
4877 | } |
4878 | ||
4879 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4880 | stopped. */ |
6426a772 JM |
4881 | static void |
4882 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4883 | { |
4884 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4885 | } |
4886 | ||
c906108c SS |
4887 | /* Send ^C to target to halt it. Target will respond, and send us a |
4888 | packet. */ | |
507f3c78 | 4889 | static void (*ofunc) (int); |
c906108c | 4890 | |
0df8b418 MS |
4891 | /* The command line interface's stop routine. This function is installed |
4892 | as a signal handler for SIGINT. The first time a user requests a | |
4893 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4894 | response from the target (it didn't stop when the user requested it), |
23860348 | 4895 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4896 | static void |
fba45db2 | 4897 | remote_interrupt (int signo) |
c906108c | 4898 | { |
23860348 | 4899 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4900 | signal (signo, remote_interrupt_twice); |
4901 | ||
b803fb0f | 4902 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4903 | } |
4904 | ||
4905 | /* The user typed ^C twice. */ | |
4906 | ||
4907 | static void | |
fba45db2 | 4908 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4909 | { |
4910 | signal (signo, ofunc); | |
b803fb0f | 4911 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4912 | signal (signo, remote_interrupt); |
4913 | } | |
7a292a7a | 4914 | |
74531fed PA |
4915 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4916 | thread, all threads of a remote process, or all threads of all | |
4917 | processes. */ | |
4918 | ||
4919 | static void | |
4920 | remote_stop_ns (ptid_t ptid) | |
4921 | { | |
4922 | struct remote_state *rs = get_remote_state (); | |
4923 | char *p = rs->buf; | |
4924 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4925 | |
4926 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4927 | remote_vcont_probe (rs); | |
4928 | ||
4929 | if (!rs->support_vCont_t) | |
4930 | error (_("Remote server does not support stopping threads")); | |
4931 | ||
f91d3df5 PA |
4932 | if (ptid_equal (ptid, minus_one_ptid) |
4933 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4934 | p += xsnprintf (p, endp - p, "vCont;t"); |
4935 | else | |
4936 | { | |
4937 | ptid_t nptid; | |
4938 | ||
74531fed PA |
4939 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4940 | ||
4941 | if (ptid_is_pid (ptid)) | |
4942 | /* All (-1) threads of process. */ | |
4943 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4944 | else | |
4945 | { | |
4946 | /* Small optimization: if we already have a stop reply for | |
4947 | this thread, no use in telling the stub we want this | |
4948 | stopped. */ | |
4949 | if (peek_stop_reply (ptid)) | |
4950 | return; | |
4951 | ||
4952 | nptid = ptid; | |
4953 | } | |
4954 | ||
a9cbf802 | 4955 | write_ptid (p, endp, nptid); |
74531fed PA |
4956 | } |
4957 | ||
4958 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4959 | come in asynchronously by notification. */ | |
4960 | putpkt (rs->buf); | |
4961 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4962 | if (strcmp (rs->buf, "OK") != 0) | |
4963 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4964 | } | |
4965 | ||
4966 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4967 | remote target. It is undefined which thread of which process | |
4968 | reports the stop. */ | |
4969 | ||
4970 | static void | |
4971 | remote_stop_as (ptid_t ptid) | |
4972 | { | |
4973 | struct remote_state *rs = get_remote_state (); | |
4974 | ||
3a29589a DJ |
4975 | rs->ctrlc_pending_p = 1; |
4976 | ||
74531fed PA |
4977 | /* If the inferior is stopped already, but the core didn't know |
4978 | about it yet, just ignore the request. The cached wait status | |
4979 | will be collected in remote_wait. */ | |
4980 | if (rs->cached_wait_status) | |
4981 | return; | |
4982 | ||
9a7071a8 JB |
4983 | /* Send interrupt_sequence to remote target. */ |
4984 | send_interrupt_sequence (); | |
74531fed PA |
4985 | } |
4986 | ||
0df8b418 | 4987 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4988 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4989 | will eventually end up here. */ |
74531fed | 4990 | |
c906108c | 4991 | static void |
94cc34af | 4992 | remote_stop (ptid_t ptid) |
c906108c | 4993 | { |
7a292a7a | 4994 | if (remote_debug) |
0f71a2f6 | 4995 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4996 | |
74531fed PA |
4997 | if (non_stop) |
4998 | remote_stop_ns (ptid); | |
c906108c | 4999 | else |
74531fed | 5000 | remote_stop_as (ptid); |
c906108c SS |
5001 | } |
5002 | ||
5003 | /* Ask the user what to do when an interrupt is received. */ | |
5004 | ||
5005 | static void | |
fba45db2 | 5006 | interrupt_query (void) |
c906108c SS |
5007 | { |
5008 | target_terminal_ours (); | |
5009 | ||
74531fed | 5010 | if (target_can_async_p ()) |
c906108c | 5011 | { |
74531fed | 5012 | signal (SIGINT, handle_sigint); |
315a522e | 5013 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 5014 | } |
74531fed PA |
5015 | else |
5016 | { | |
9e2f0ad4 HZ |
5017 | if (query (_("Interrupted while waiting for the program.\n\ |
5018 | Give up (and stop debugging it)? "))) | |
74531fed PA |
5019 | { |
5020 | pop_target (); | |
5021 | deprecated_throw_reason (RETURN_QUIT); | |
5022 | } | |
5023 | } | |
c906108c SS |
5024 | |
5025 | target_terminal_inferior (); | |
5026 | } | |
5027 | ||
6426a772 JM |
5028 | /* Enable/disable target terminal ownership. Most targets can use |
5029 | terminal groups to control terminal ownership. Remote targets are | |
5030 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5031 | is required. */ |
6426a772 JM |
5032 | |
5033 | static void | |
75c99385 | 5034 | remote_terminal_inferior (void) |
6426a772 | 5035 | { |
c6ebd6cf | 5036 | if (!target_async_permitted) |
75c99385 PA |
5037 | /* Nothing to do. */ |
5038 | return; | |
5039 | ||
d9d2d8b6 PA |
5040 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5041 | idempotent. The event-loop GDB talking to an asynchronous target | |
5042 | with a synchronous command calls this function from both | |
5043 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5044 | transfer the terminal to the target when it shouldn't this guard | |
5045 | can go away. */ | |
6426a772 JM |
5046 | if (!remote_async_terminal_ours_p) |
5047 | return; | |
5048 | delete_file_handler (input_fd); | |
5049 | remote_async_terminal_ours_p = 0; | |
5050 | initialize_sigint_signal_handler (); | |
5051 | /* NOTE: At this point we could also register our selves as the | |
5052 | recipient of all input. Any characters typed could then be | |
23860348 | 5053 | passed on down to the target. */ |
6426a772 JM |
5054 | } |
5055 | ||
5056 | static void | |
75c99385 | 5057 | remote_terminal_ours (void) |
6426a772 | 5058 | { |
c6ebd6cf | 5059 | if (!target_async_permitted) |
75c99385 PA |
5060 | /* Nothing to do. */ |
5061 | return; | |
5062 | ||
5063 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5064 | if (remote_async_terminal_ours_p) |
5065 | return; | |
5066 | cleanup_sigint_signal_handler (NULL); | |
5067 | add_file_handler (input_fd, stdin_event_handler, 0); | |
5068 | remote_async_terminal_ours_p = 1; | |
5069 | } | |
5070 | ||
176a6961 | 5071 | static void |
917317f4 | 5072 | remote_console_output (char *msg) |
c906108c SS |
5073 | { |
5074 | char *p; | |
5075 | ||
c5aa993b | 5076 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5077 | { |
5078 | char tb[2]; | |
5079 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5080 | |
c906108c SS |
5081 | tb[0] = c; |
5082 | tb[1] = 0; | |
43ff13b4 | 5083 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5084 | } |
00db5b94 PA |
5085 | gdb_flush (gdb_stdtarg); |
5086 | } | |
74531fed PA |
5087 | |
5088 | typedef struct cached_reg | |
5089 | { | |
5090 | int num; | |
5091 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5092 | } cached_reg_t; | |
5093 | ||
5094 | DEF_VEC_O(cached_reg_t); | |
5095 | ||
5096 | struct stop_reply | |
5097 | { | |
5098 | struct stop_reply *next; | |
5099 | ||
5100 | ptid_t ptid; | |
5101 | ||
5102 | struct target_waitstatus ws; | |
5103 | ||
15148d6a PA |
5104 | /* Expedited registers. This makes remote debugging a bit more |
5105 | efficient for those targets that provide critical registers as | |
5106 | part of their normal status mechanism (as another roundtrip to | |
5107 | fetch them is avoided). */ | |
74531fed PA |
5108 | VEC(cached_reg_t) *regcache; |
5109 | ||
5110 | int stopped_by_watchpoint_p; | |
5111 | CORE_ADDR watch_data_address; | |
5112 | ||
5113 | int solibs_changed; | |
5114 | int replay_event; | |
dc146f7c VP |
5115 | |
5116 | int core; | |
74531fed PA |
5117 | }; |
5118 | ||
5119 | /* The list of already fetched and acknowledged stop events. */ | |
5120 | static struct stop_reply *stop_reply_queue; | |
5121 | ||
5122 | static struct stop_reply * | |
5123 | stop_reply_xmalloc (void) | |
5124 | { | |
5125 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 5126 | |
74531fed PA |
5127 | r->next = NULL; |
5128 | return r; | |
5129 | } | |
5130 | ||
5131 | static void | |
5132 | stop_reply_xfree (struct stop_reply *r) | |
5133 | { | |
5134 | if (r != NULL) | |
5135 | { | |
5136 | VEC_free (cached_reg_t, r->regcache); | |
5137 | xfree (r); | |
5138 | } | |
c906108c SS |
5139 | } |
5140 | ||
74531fed PA |
5141 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
5142 | discard everything. */ | |
c906108c | 5143 | |
74531fed PA |
5144 | static void |
5145 | discard_pending_stop_replies (int pid) | |
c906108c | 5146 | { |
74531fed | 5147 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 5148 | |
74531fed PA |
5149 | /* Discard the in-flight notification. */ |
5150 | if (pending_stop_reply != NULL | |
5151 | && (pid == -1 | |
5152 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
5153 | { | |
5154 | stop_reply_xfree (pending_stop_reply); | |
5155 | pending_stop_reply = NULL; | |
5156 | } | |
c906108c | 5157 | |
74531fed PA |
5158 | /* Discard the stop replies we have already pulled with |
5159 | vStopped. */ | |
5160 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 5161 | { |
74531fed PA |
5162 | next = reply->next; |
5163 | if (pid == -1 | |
5164 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 5165 | { |
74531fed PA |
5166 | if (reply == stop_reply_queue) |
5167 | stop_reply_queue = reply->next; | |
5168 | else | |
5169 | prev->next = reply->next; | |
5170 | ||
5171 | stop_reply_xfree (reply); | |
9fa2223d | 5172 | } |
74531fed PA |
5173 | else |
5174 | prev = reply; | |
c8e38a49 | 5175 | } |
74531fed | 5176 | } |
43ff13b4 | 5177 | |
74531fed | 5178 | /* Cleanup wrapper. */ |
2e9f7625 | 5179 | |
74531fed PA |
5180 | static void |
5181 | do_stop_reply_xfree (void *arg) | |
5182 | { | |
5183 | struct stop_reply *r = arg; | |
a744cf53 | 5184 | |
74531fed PA |
5185 | stop_reply_xfree (r); |
5186 | } | |
75c99385 | 5187 | |
74531fed PA |
5188 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5189 | remove it from the queue, and return it. Returns NULL if none is | |
5190 | found. If there are still queued events left to process, tell the | |
5191 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5192 | |
74531fed PA |
5193 | static struct stop_reply * |
5194 | queued_stop_reply (ptid_t ptid) | |
5195 | { | |
0723dbf5 PA |
5196 | struct stop_reply *it; |
5197 | struct stop_reply **it_link; | |
74531fed | 5198 | |
0723dbf5 PA |
5199 | it = stop_reply_queue; |
5200 | it_link = &stop_reply_queue; | |
5201 | while (it) | |
c8e38a49 | 5202 | { |
0723dbf5 PA |
5203 | if (ptid_match (it->ptid, ptid)) |
5204 | { | |
5205 | *it_link = it->next; | |
5206 | it->next = NULL; | |
5207 | break; | |
5208 | } | |
e24a49d8 | 5209 | |
0723dbf5 PA |
5210 | it_link = &it->next; |
5211 | it = *it_link; | |
5212 | } | |
74531fed PA |
5213 | |
5214 | if (stop_reply_queue) | |
5215 | /* There's still at least an event left. */ | |
5216 | mark_async_event_handler (remote_async_inferior_event_token); | |
5217 | ||
5218 | return it; | |
5219 | } | |
5220 | ||
5221 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5222 | know that we now have at least one queued event left to pass to the | |
5223 | core side, tell the event loop to get back to target_wait soon. */ | |
5224 | ||
5225 | static void | |
5226 | push_stop_reply (struct stop_reply *new_event) | |
5227 | { | |
5228 | struct stop_reply *event; | |
5229 | ||
5230 | if (stop_reply_queue) | |
5231 | { | |
5232 | for (event = stop_reply_queue; | |
5233 | event && event->next; | |
5234 | event = event->next) | |
5235 | ; | |
5236 | ||
5237 | event->next = new_event; | |
5238 | } | |
5239 | else | |
5240 | stop_reply_queue = new_event; | |
5241 | ||
5242 | mark_async_event_handler (remote_async_inferior_event_token); | |
5243 | } | |
5244 | ||
5245 | /* Returns true if we have a stop reply for PTID. */ | |
5246 | ||
5247 | static int | |
5248 | peek_stop_reply (ptid_t ptid) | |
5249 | { | |
5250 | struct stop_reply *it; | |
5251 | ||
5252 | for (it = stop_reply_queue; it; it = it->next) | |
5253 | if (ptid_equal (ptid, it->ptid)) | |
5254 | { | |
5255 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5256 | return 1; | |
5257 | } | |
5258 | ||
5259 | return 0; | |
5260 | } | |
5261 | ||
5262 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5263 | result is stored in EVENT, or throws an error. */ | |
5264 | ||
5265 | static void | |
5266 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5267 | { | |
5268 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5269 | ULONGEST addr; | |
5270 | char *p; | |
5271 | ||
5272 | event->ptid = null_ptid; | |
5273 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5274 | event->ws.value.integer = 0; | |
5275 | event->solibs_changed = 0; | |
5276 | event->replay_event = 0; | |
5277 | event->stopped_by_watchpoint_p = 0; | |
5278 | event->regcache = NULL; | |
dc146f7c | 5279 | event->core = -1; |
74531fed PA |
5280 | |
5281 | switch (buf[0]) | |
5282 | { | |
5283 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5284 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5285 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5286 | ss = signal number | |
5287 | n... = register number | |
5288 | r... = register contents | |
5289 | */ | |
5290 | ||
5291 | p = &buf[3]; /* after Txx */ | |
5292 | while (*p) | |
5293 | { | |
5294 | char *p1; | |
5295 | char *p_temp; | |
5296 | int fieldsize; | |
5297 | LONGEST pnum = 0; | |
43ff13b4 | 5298 | |
cea39f65 MS |
5299 | /* If the packet contains a register number, save it in |
5300 | pnum and set p1 to point to the character following it. | |
5301 | Otherwise p1 points to p. */ | |
3c3bea1c | 5302 | |
cea39f65 MS |
5303 | /* If this packet is an awatch packet, don't parse the 'a' |
5304 | as a register number. */ | |
c8e38a49 | 5305 | |
dc146f7c VP |
5306 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5307 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5308 | { |
5309 | /* Read the ``P'' register number. */ | |
5310 | pnum = strtol (p, &p_temp, 16); | |
5311 | p1 = p_temp; | |
5312 | } | |
5313 | else | |
5314 | p1 = p; | |
802188a7 | 5315 | |
cea39f65 MS |
5316 | if (p1 == p) /* No register number present here. */ |
5317 | { | |
5318 | p1 = strchr (p, ':'); | |
5319 | if (p1 == NULL) | |
5320 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5321 | Packet: '%s'\n"), |
cea39f65 MS |
5322 | p, buf); |
5323 | if (strncmp (p, "thread", p1 - p) == 0) | |
5324 | event->ptid = read_ptid (++p1, &p); | |
5325 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5326 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5327 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5328 | { | |
5329 | event->stopped_by_watchpoint_p = 1; | |
5330 | p = unpack_varlen_hex (++p1, &addr); | |
5331 | event->watch_data_address = (CORE_ADDR) addr; | |
5332 | } | |
5333 | else if (strncmp (p, "library", p1 - p) == 0) | |
5334 | { | |
5335 | p1++; | |
5336 | p_temp = p1; | |
5337 | while (*p_temp && *p_temp != ';') | |
5338 | p_temp++; | |
c8e38a49 | 5339 | |
cea39f65 MS |
5340 | event->solibs_changed = 1; |
5341 | p = p_temp; | |
5342 | } | |
5343 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5344 | { | |
5345 | /* NO_HISTORY event. | |
5346 | p1 will indicate "begin" or "end", but | |
5347 | it makes no difference for now, so ignore it. */ | |
5348 | event->replay_event = 1; | |
5349 | p_temp = strchr (p1 + 1, ';'); | |
5350 | if (p_temp) | |
c8e38a49 | 5351 | p = p_temp; |
cea39f65 | 5352 | } |
dc146f7c VP |
5353 | else if (strncmp (p, "core", p1 - p) == 0) |
5354 | { | |
5355 | ULONGEST c; | |
a744cf53 | 5356 | |
dc146f7c VP |
5357 | p = unpack_varlen_hex (++p1, &c); |
5358 | event->core = c; | |
5359 | } | |
cea39f65 MS |
5360 | else |
5361 | { | |
5362 | /* Silently skip unknown optional info. */ | |
5363 | p_temp = strchr (p1 + 1, ';'); | |
5364 | if (p_temp) | |
5365 | p = p_temp; | |
5366 | } | |
5367 | } | |
5368 | else | |
5369 | { | |
5370 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5371 | cached_reg_t cached_reg; | |
74531fed | 5372 | |
cea39f65 | 5373 | p = p1; |
75c99385 | 5374 | |
cea39f65 MS |
5375 | if (*p != ':') |
5376 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5377 | Packet: '%s'\n"), |
cea39f65 MS |
5378 | p, buf); |
5379 | ++p; | |
43ff13b4 | 5380 | |
cea39f65 MS |
5381 | if (reg == NULL) |
5382 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5383 | Packet: '%s'\n"), |
7c47795c | 5384 | hex_string (pnum), p, buf); |
c8e38a49 | 5385 | |
cea39f65 | 5386 | cached_reg.num = reg->regnum; |
4100683b | 5387 | |
cea39f65 MS |
5388 | fieldsize = hex2bin (p, cached_reg.data, |
5389 | register_size (target_gdbarch, | |
5390 | reg->regnum)); | |
5391 | p += 2 * fieldsize; | |
5392 | if (fieldsize < register_size (target_gdbarch, | |
5393 | reg->regnum)) | |
5394 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5395 | |
cea39f65 MS |
5396 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5397 | } | |
c8e38a49 | 5398 | |
cea39f65 MS |
5399 | if (*p != ';') |
5400 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5401 | buf, p); | |
5402 | ++p; | |
5403 | } | |
c8e38a49 PA |
5404 | /* fall through */ |
5405 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5406 | if (event->solibs_changed) |
5407 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5408 | else if (event->replay_event) | |
5409 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5410 | else |
5411 | { | |
74531fed | 5412 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
2ea28649 | 5413 | event->ws.value.sig = (enum gdb_signal) |
c8e38a49 PA |
5414 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5415 | } | |
5416 | break; | |
5417 | case 'W': /* Target exited. */ | |
5418 | case 'X': | |
5419 | { | |
5420 | char *p; | |
5421 | int pid; | |
5422 | ULONGEST value; | |
82f73884 | 5423 | |
c8e38a49 PA |
5424 | /* GDB used to accept only 2 hex chars here. Stubs should |
5425 | only send more if they detect GDB supports multi-process | |
5426 | support. */ | |
5427 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5428 | |
c8e38a49 PA |
5429 | if (buf[0] == 'W') |
5430 | { | |
5431 | /* The remote process exited. */ | |
74531fed PA |
5432 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5433 | event->ws.value.integer = value; | |
c8e38a49 PA |
5434 | } |
5435 | else | |
5436 | { | |
5437 | /* The remote process exited with a signal. */ | |
74531fed | 5438 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
2ea28649 | 5439 | event->ws.value.sig = (enum gdb_signal) value; |
c8e38a49 | 5440 | } |
82f73884 | 5441 | |
c8e38a49 PA |
5442 | /* If no process is specified, assume inferior_ptid. */ |
5443 | pid = ptid_get_pid (inferior_ptid); | |
5444 | if (*p == '\0') | |
5445 | ; | |
5446 | else if (*p == ';') | |
5447 | { | |
5448 | p++; | |
5449 | ||
5450 | if (p == '\0') | |
82f73884 | 5451 | ; |
c8e38a49 PA |
5452 | else if (strncmp (p, |
5453 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5454 | { |
c8e38a49 | 5455 | ULONGEST upid; |
a744cf53 | 5456 | |
c8e38a49 PA |
5457 | p += sizeof ("process:") - 1; |
5458 | unpack_varlen_hex (p, &upid); | |
5459 | pid = upid; | |
82f73884 PA |
5460 | } |
5461 | else | |
5462 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5463 | } |
c8e38a49 PA |
5464 | else |
5465 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5466 | event->ptid = pid_to_ptid (pid); |
5467 | } | |
5468 | break; | |
5469 | } | |
5470 | ||
5471 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5472 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5473 | } | |
5474 | ||
5475 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5476 | stop notification (%Stop). Those can come it at any time, hence, | |
5477 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5478 | making is finished, before querying the stub for more events with | |
5479 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5480 | upon receiving the %Stop notification, something like this could | |
5481 | happen: | |
5482 | ||
5483 | 1.1) --> Hg 1 | |
5484 | 1.2) <-- OK | |
5485 | 1.3) --> g | |
5486 | 1.4) <-- %Stop | |
5487 | 1.5) --> vStopped | |
5488 | 1.6) <-- (registers reply to step #1.3) | |
5489 | ||
5490 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5491 | query. | |
5492 | ||
5493 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5494 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5495 | doing whatever we were doing: | |
5496 | ||
5497 | 2.1) --> Hg 1 | |
5498 | 2.2) <-- OK | |
5499 | 2.3) --> g | |
5500 | 2.4) <-- %Stop | |
5501 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5502 | 2.5) <-- (registers reply to step #2.3) | |
5503 | ||
5504 | Eventualy after step #2.5, we return to the event loop, which | |
5505 | notices there's an event on the | |
5506 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5507 | associated callback --- the function below. At this point, we're | |
5508 | always safe to start a vStopped sequence. : | |
5509 | ||
5510 | 2.6) --> vStopped | |
5511 | 2.7) <-- T05 thread:2 | |
5512 | 2.8) --> vStopped | |
5513 | 2.9) --> OK | |
5514 | */ | |
5515 | ||
5516 | static void | |
5517 | remote_get_pending_stop_replies (void) | |
5518 | { | |
5519 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5520 | |
5521 | if (pending_stop_reply) | |
5522 | { | |
5523 | /* acknowledge */ | |
5524 | putpkt ("vStopped"); | |
5525 | ||
5526 | /* Now we can rely on it. */ | |
5527 | push_stop_reply (pending_stop_reply); | |
5528 | pending_stop_reply = NULL; | |
5529 | ||
5530 | while (1) | |
5531 | { | |
5532 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5533 | if (strcmp (rs->buf, "OK") == 0) | |
5534 | break; | |
5535 | else | |
5536 | { | |
5537 | struct cleanup *old_chain; | |
5538 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5539 | ||
5540 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5541 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5542 | ||
5543 | /* acknowledge */ | |
5544 | putpkt ("vStopped"); | |
5545 | ||
5546 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5547 | { | |
5548 | /* Now we can rely on it. */ | |
5549 | discard_cleanups (old_chain); | |
5550 | push_stop_reply (stop_reply); | |
5551 | } | |
5552 | else | |
5553 | /* We got an unknown stop reply. */ | |
5554 | do_cleanups (old_chain); | |
5555 | } | |
5556 | } | |
5557 | } | |
5558 | } | |
5559 | ||
5560 | ||
5561 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5562 | event that is to be returned to the core. This function always | |
5563 | destroys STOP_REPLY. */ | |
5564 | ||
5565 | static ptid_t | |
5566 | process_stop_reply (struct stop_reply *stop_reply, | |
5567 | struct target_waitstatus *status) | |
5568 | { | |
5569 | ptid_t ptid; | |
5570 | ||
5571 | *status = stop_reply->ws; | |
5572 | ptid = stop_reply->ptid; | |
5573 | ||
5574 | /* If no thread/process was reported by the stub, assume the current | |
5575 | inferior. */ | |
5576 | if (ptid_equal (ptid, null_ptid)) | |
5577 | ptid = inferior_ptid; | |
5578 | ||
5f3563ea PA |
5579 | if (status->kind != TARGET_WAITKIND_EXITED |
5580 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5581 | { |
5f3563ea PA |
5582 | /* Expedited registers. */ |
5583 | if (stop_reply->regcache) | |
5584 | { | |
217f1f79 UW |
5585 | struct regcache *regcache |
5586 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5587 | cached_reg_t *reg; |
5588 | int ix; | |
5589 | ||
5590 | for (ix = 0; | |
5591 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5592 | ix++) | |
217f1f79 | 5593 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5594 | VEC_free (cached_reg_t, stop_reply->regcache); |
5595 | } | |
74531fed | 5596 | |
5f3563ea PA |
5597 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5598 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5599 | |
5600 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5601 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5602 | } |
5603 | ||
74531fed PA |
5604 | stop_reply_xfree (stop_reply); |
5605 | return ptid; | |
5606 | } | |
5607 | ||
5608 | /* The non-stop mode version of target_wait. */ | |
5609 | ||
5610 | static ptid_t | |
47608cb1 | 5611 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5612 | { |
5613 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5614 | struct stop_reply *stop_reply; |
5615 | int ret; | |
5616 | ||
5617 | /* If in non-stop mode, get out of getpkt even if a | |
5618 | notification is received. */ | |
5619 | ||
5620 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5621 | 0 /* forever */); | |
5622 | while (1) | |
5623 | { | |
5624 | if (ret != -1) | |
5625 | switch (rs->buf[0]) | |
5626 | { | |
5627 | case 'E': /* Error of some sort. */ | |
5628 | /* We're out of sync with the target now. Did it continue | |
5629 | or not? We can't tell which thread it was in non-stop, | |
5630 | so just ignore this. */ | |
5631 | warning (_("Remote failure reply: %s"), rs->buf); | |
5632 | break; | |
5633 | case 'O': /* Console output. */ | |
5634 | remote_console_output (rs->buf + 1); | |
5635 | break; | |
5636 | default: | |
5637 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5638 | break; | |
5639 | } | |
5640 | ||
5641 | /* Acknowledge a pending stop reply that may have arrived in the | |
5642 | mean time. */ | |
5643 | if (pending_stop_reply != NULL) | |
5644 | remote_get_pending_stop_replies (); | |
5645 | ||
5646 | /* If indeed we noticed a stop reply, we're done. */ | |
5647 | stop_reply = queued_stop_reply (ptid); | |
5648 | if (stop_reply != NULL) | |
5649 | return process_stop_reply (stop_reply, status); | |
5650 | ||
47608cb1 | 5651 | /* Still no event. If we're just polling for an event, then |
74531fed | 5652 | return to the event loop. */ |
47608cb1 | 5653 | if (options & TARGET_WNOHANG) |
74531fed PA |
5654 | { |
5655 | status->kind = TARGET_WAITKIND_IGNORE; | |
5656 | return minus_one_ptid; | |
5657 | } | |
5658 | ||
47608cb1 | 5659 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5660 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5661 | 1 /* forever */); | |
5662 | } | |
5663 | } | |
5664 | ||
5665 | /* Wait until the remote machine stops, then return, storing status in | |
5666 | STATUS just as `wait' would. */ | |
5667 | ||
5668 | static ptid_t | |
47608cb1 | 5669 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5670 | { |
5671 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5672 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5673 | char *buf; |
74531fed PA |
5674 | struct stop_reply *stop_reply; |
5675 | ||
47608cb1 PA |
5676 | again: |
5677 | ||
74531fed PA |
5678 | status->kind = TARGET_WAITKIND_IGNORE; |
5679 | status->value.integer = 0; | |
5680 | ||
5681 | stop_reply = queued_stop_reply (ptid); | |
5682 | if (stop_reply != NULL) | |
5683 | return process_stop_reply (stop_reply, status); | |
5684 | ||
5685 | if (rs->cached_wait_status) | |
5686 | /* Use the cached wait status, but only once. */ | |
5687 | rs->cached_wait_status = 0; | |
5688 | else | |
5689 | { | |
5690 | int ret; | |
5691 | ||
5692 | if (!target_is_async_p ()) | |
5693 | { | |
5694 | ofunc = signal (SIGINT, remote_interrupt); | |
5695 | /* If the user hit C-c before this packet, or between packets, | |
5696 | pretend that it was hit right here. */ | |
5697 | if (quit_flag) | |
5698 | { | |
5699 | quit_flag = 0; | |
5700 | remote_interrupt (SIGINT); | |
5701 | } | |
5702 | } | |
5703 | ||
5704 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5705 | _never_ wait for ever -> test on target_is_async_p(). | |
5706 | However, before we do that we need to ensure that the caller | |
5707 | knows how to take the target into/out of async mode. */ | |
5708 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5709 | if (!target_is_async_p ()) | |
5710 | signal (SIGINT, ofunc); | |
5711 | } | |
5712 | ||
5713 | buf = rs->buf; | |
5714 | ||
5715 | remote_stopped_by_watchpoint_p = 0; | |
5716 | ||
5717 | /* We got something. */ | |
5718 | rs->waiting_for_stop_reply = 0; | |
5719 | ||
3a29589a DJ |
5720 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5721 | an 'F' or 'O' packet. */ | |
5722 | if (buf[0] != 'F' && buf[0] != 'O') | |
5723 | rs->ctrlc_pending_p = 0; | |
5724 | ||
74531fed PA |
5725 | switch (buf[0]) |
5726 | { | |
5727 | case 'E': /* Error of some sort. */ | |
5728 | /* We're out of sync with the target now. Did it continue or | |
5729 | not? Not is more likely, so report a stop. */ | |
5730 | warning (_("Remote failure reply: %s"), buf); | |
5731 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 5732 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
5733 | break; |
5734 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5735 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5736 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5737 | break; |
5738 | case 'T': case 'S': case 'X': case 'W': | |
5739 | { | |
5740 | struct stop_reply *stop_reply; | |
5741 | struct cleanup *old_chain; | |
5742 | ||
5743 | stop_reply = stop_reply_xmalloc (); | |
5744 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5745 | remote_parse_stop_reply (buf, stop_reply); | |
5746 | discard_cleanups (old_chain); | |
5747 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5748 | break; |
5749 | } | |
5750 | case 'O': /* Console output. */ | |
5751 | remote_console_output (buf + 1); | |
e24a49d8 | 5752 | |
c8e38a49 PA |
5753 | /* The target didn't really stop; keep waiting. */ |
5754 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5755 | |
c8e38a49 PA |
5756 | break; |
5757 | case '\0': | |
a493e3e2 | 5758 | if (last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
5759 | { |
5760 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5761 | remote system doesn't support it. */ | |
5762 | target_terminal_ours_for_output (); | |
5763 | printf_filtered | |
5764 | ("Can't send signals to this remote system. %s not sent.\n", | |
2ea28649 | 5765 | gdb_signal_to_name (last_sent_signal)); |
a493e3e2 | 5766 | last_sent_signal = GDB_SIGNAL_0; |
c8e38a49 PA |
5767 | target_terminal_inferior (); |
5768 | ||
5769 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5770 | putpkt ((char *) buf); | |
5771 | ||
5772 | /* We just told the target to resume, so a stop reply is in | |
5773 | order. */ | |
e24a49d8 | 5774 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5775 | break; |
43ff13b4 | 5776 | } |
c8e38a49 PA |
5777 | /* else fallthrough */ |
5778 | default: | |
5779 | warning (_("Invalid remote reply: %s"), buf); | |
5780 | /* Keep waiting. */ | |
5781 | rs->waiting_for_stop_reply = 1; | |
5782 | break; | |
43ff13b4 | 5783 | } |
c8e38a49 | 5784 | |
c8e38a49 | 5785 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5786 | { |
5787 | /* Nothing interesting happened. If we're doing a non-blocking | |
5788 | poll, we're done. Otherwise, go back to waiting. */ | |
5789 | if (options & TARGET_WNOHANG) | |
5790 | return minus_one_ptid; | |
5791 | else | |
5792 | goto again; | |
5793 | } | |
74531fed PA |
5794 | else if (status->kind != TARGET_WAITKIND_EXITED |
5795 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5796 | { |
5797 | if (!ptid_equal (event_ptid, null_ptid)) | |
5798 | record_currthread (event_ptid); | |
5799 | else | |
5800 | event_ptid = inferior_ptid; | |
43ff13b4 | 5801 | } |
74531fed PA |
5802 | else |
5803 | /* A process exit. Invalidate our notion of current thread. */ | |
5804 | record_currthread (minus_one_ptid); | |
79d7f229 | 5805 | |
82f73884 | 5806 | return event_ptid; |
43ff13b4 JM |
5807 | } |
5808 | ||
74531fed PA |
5809 | /* Wait until the remote machine stops, then return, storing status in |
5810 | STATUS just as `wait' would. */ | |
5811 | ||
c8e38a49 | 5812 | static ptid_t |
117de6a9 | 5813 | remote_wait (struct target_ops *ops, |
47608cb1 | 5814 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5815 | { |
5816 | ptid_t event_ptid; | |
5817 | ||
74531fed | 5818 | if (non_stop) |
47608cb1 | 5819 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5820 | else |
47608cb1 | 5821 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5822 | |
74531fed | 5823 | if (target_can_async_p ()) |
c8e38a49 | 5824 | { |
74531fed PA |
5825 | /* If there are are events left in the queue tell the event loop |
5826 | to return here. */ | |
5827 | if (stop_reply_queue) | |
5828 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5829 | } |
c8e38a49 PA |
5830 | |
5831 | return event_ptid; | |
5832 | } | |
5833 | ||
74ca34ce | 5834 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5835 | |
b96ec7ac | 5836 | static int |
56be3814 | 5837 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5838 | { |
5839 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5840 | char *buf, *p; |
b96ec7ac AC |
5841 | char regp[MAX_REGISTER_SIZE]; |
5842 | int i; | |
5843 | ||
74ca34ce DJ |
5844 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5845 | return 0; | |
5846 | ||
5847 | if (reg->pnum == -1) | |
5848 | return 0; | |
5849 | ||
2e9f7625 | 5850 | p = rs->buf; |
fcad0fa4 | 5851 | *p++ = 'p'; |
74ca34ce | 5852 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5853 | *p++ = '\0'; |
1f4437a4 MS |
5854 | putpkt (rs->buf); |
5855 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5856 | |
2e9f7625 DJ |
5857 | buf = rs->buf; |
5858 | ||
74ca34ce DJ |
5859 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5860 | { | |
5861 | case PACKET_OK: | |
5862 | break; | |
5863 | case PACKET_UNKNOWN: | |
5864 | return 0; | |
5865 | case PACKET_ERROR: | |
27a9c0bf MS |
5866 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5867 | gdbarch_register_name (get_regcache_arch (regcache), | |
5868 | reg->regnum), | |
5869 | buf); | |
74ca34ce | 5870 | } |
3f9a994c JB |
5871 | |
5872 | /* If this register is unfetchable, tell the regcache. */ | |
5873 | if (buf[0] == 'x') | |
8480adf2 | 5874 | { |
56be3814 | 5875 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5876 | return 1; |
b96ec7ac | 5877 | } |
b96ec7ac | 5878 | |
3f9a994c JB |
5879 | /* Otherwise, parse and supply the value. */ |
5880 | p = buf; | |
5881 | i = 0; | |
5882 | while (p[0] != 0) | |
5883 | { | |
5884 | if (p[1] == 0) | |
74ca34ce | 5885 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5886 | |
5887 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5888 | p += 2; | |
5889 | } | |
56be3814 | 5890 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5891 | return 1; |
b96ec7ac AC |
5892 | } |
5893 | ||
74ca34ce DJ |
5894 | /* Fetch the registers included in the target's 'g' packet. */ |
5895 | ||
29709017 DJ |
5896 | static int |
5897 | send_g_packet (void) | |
c906108c | 5898 | { |
d01949b6 | 5899 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5900 | int buf_len; |
c906108c | 5901 | |
bba74b36 | 5902 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 5903 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 5904 | |
29709017 DJ |
5905 | /* We can get out of synch in various cases. If the first character |
5906 | in the buffer is not a hex character, assume that has happened | |
5907 | and try to fetch another packet to read. */ | |
5908 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5909 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5910 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5911 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5912 | { | |
5913 | if (remote_debug) | |
5914 | fprintf_unfiltered (gdb_stdlog, | |
5915 | "Bad register packet; fetching a new packet\n"); | |
5916 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5917 | } | |
5918 | ||
74ca34ce DJ |
5919 | buf_len = strlen (rs->buf); |
5920 | ||
5921 | /* Sanity check the received packet. */ | |
5922 | if (buf_len % 2 != 0) | |
5923 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5924 | |
5925 | return buf_len / 2; | |
5926 | } | |
5927 | ||
5928 | static void | |
56be3814 | 5929 | process_g_packet (struct regcache *regcache) |
29709017 | 5930 | { |
4a22f64d | 5931 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5932 | struct remote_state *rs = get_remote_state (); |
5933 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5934 | int i, buf_len; | |
5935 | char *p; | |
5936 | char *regs; | |
5937 | ||
5938 | buf_len = strlen (rs->buf); | |
5939 | ||
5940 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5941 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5942 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5943 | ||
5944 | /* Save the size of the packet sent to us by the target. It is used | |
5945 | as a heuristic when determining the max size of packets that the | |
5946 | target can safely receive. */ | |
5947 | if (rsa->actual_register_packet_size == 0) | |
5948 | rsa->actual_register_packet_size = buf_len; | |
5949 | ||
5950 | /* If this is smaller than we guessed the 'g' packet would be, | |
5951 | update our records. A 'g' reply that doesn't include a register's | |
5952 | value implies either that the register is not available, or that | |
5953 | the 'p' packet must be used. */ | |
5954 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5955 | { |
74ca34ce DJ |
5956 | rsa->sizeof_g_packet = buf_len / 2; |
5957 | ||
4a22f64d | 5958 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5959 | { |
74ca34ce DJ |
5960 | if (rsa->regs[i].pnum == -1) |
5961 | continue; | |
5962 | ||
5963 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5964 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5965 | else |
74ca34ce | 5966 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5967 | } |
74ca34ce | 5968 | } |
b323314b | 5969 | |
74ca34ce | 5970 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5971 | |
5972 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5973 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5974 | |
c906108c SS |
5975 | /* Reply describes registers byte by byte, each byte encoded as two |
5976 | hex characters. Suck them all up, then supply them to the | |
5977 | register cacheing/storage mechanism. */ | |
5978 | ||
74ca34ce | 5979 | p = rs->buf; |
ea9c271d | 5980 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5981 | { |
74ca34ce DJ |
5982 | if (p[0] == 0 || p[1] == 0) |
5983 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5984 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5985 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5986 | |
c906108c | 5987 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5988 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5989 | else |
5990 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5991 | p += 2; | |
5992 | } | |
5993 | ||
a744cf53 MS |
5994 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5995 | { | |
5996 | struct packet_reg *r = &rsa->regs[i]; | |
5997 | ||
5998 | if (r->in_g_packet) | |
5999 | { | |
6000 | if (r->offset * 2 >= strlen (rs->buf)) | |
6001 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6002 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6003 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6004 | else if (rs->buf[r->offset * 2] == 'x') |
6005 | { | |
6006 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6007 | /* The register isn't available, mark it as such (at | |
6008 | the same time setting the value to zero). */ | |
6009 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6010 | } | |
6011 | else | |
6012 | regcache_raw_supply (regcache, r->regnum, | |
6013 | regs + r->offset); | |
6014 | } | |
6015 | } | |
c906108c SS |
6016 | } |
6017 | ||
29709017 | 6018 | static void |
56be3814 | 6019 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6020 | { |
6021 | send_g_packet (); | |
56be3814 | 6022 | process_g_packet (regcache); |
29709017 DJ |
6023 | } |
6024 | ||
e6e4e701 PA |
6025 | /* Make the remote selected traceframe match GDB's selected |
6026 | traceframe. */ | |
6027 | ||
6028 | static void | |
6029 | set_remote_traceframe (void) | |
6030 | { | |
6031 | int newnum; | |
6032 | ||
6033 | if (remote_traceframe_number == get_traceframe_number ()) | |
6034 | return; | |
6035 | ||
6036 | /* Avoid recursion, remote_trace_find calls us again. */ | |
6037 | remote_traceframe_number = get_traceframe_number (); | |
6038 | ||
6039 | newnum = target_trace_find (tfind_number, | |
6040 | get_traceframe_number (), 0, 0, NULL); | |
6041 | ||
6042 | /* Should not happen. If it does, all bets are off. */ | |
6043 | if (newnum != get_traceframe_number ()) | |
6044 | warning (_("could not set remote traceframe")); | |
6045 | } | |
6046 | ||
74ca34ce | 6047 | static void |
28439f5e PA |
6048 | remote_fetch_registers (struct target_ops *ops, |
6049 | struct regcache *regcache, int regnum) | |
74ca34ce | 6050 | { |
74ca34ce DJ |
6051 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6052 | int i; | |
6053 | ||
e6e4e701 | 6054 | set_remote_traceframe (); |
79d7f229 | 6055 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6056 | |
6057 | if (regnum >= 0) | |
6058 | { | |
6059 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6060 | |
74ca34ce DJ |
6061 | gdb_assert (reg != NULL); |
6062 | ||
6063 | /* If this register might be in the 'g' packet, try that first - | |
6064 | we are likely to read more than one register. If this is the | |
6065 | first 'g' packet, we might be overly optimistic about its | |
6066 | contents, so fall back to 'p'. */ | |
6067 | if (reg->in_g_packet) | |
6068 | { | |
56be3814 | 6069 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6070 | if (reg->in_g_packet) |
6071 | return; | |
6072 | } | |
6073 | ||
56be3814 | 6074 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6075 | return; |
6076 | ||
6077 | /* This register is not available. */ | |
56be3814 | 6078 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6079 | |
6080 | return; | |
6081 | } | |
6082 | ||
56be3814 | 6083 | fetch_registers_using_g (regcache); |
74ca34ce | 6084 | |
4a22f64d | 6085 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6086 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6087 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6088 | { |
6089 | /* This register is not available. */ | |
56be3814 | 6090 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6091 | } |
6092 | } | |
6093 | ||
c906108c SS |
6094 | /* Prepare to store registers. Since we may send them all (using a |
6095 | 'G' request), we have to read out the ones we don't want to change | |
6096 | first. */ | |
6097 | ||
c5aa993b | 6098 | static void |
316f2060 | 6099 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 6100 | { |
ea9c271d | 6101 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6102 | int i; |
cfd77fa1 | 6103 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6104 | |
c906108c | 6105 | /* Make sure the entire registers array is valid. */ |
444abaca | 6106 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6107 | { |
6108 | case PACKET_DISABLE: | |
6109 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6110 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6111 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6112 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6113 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6114 | break; |
6115 | case PACKET_ENABLE: | |
6116 | break; | |
6117 | } | |
6118 | } | |
6119 | ||
ad10f812 | 6120 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6121 | packet was not recognized. */ |
5a2468f5 JM |
6122 | |
6123 | static int | |
1f4437a4 MS |
6124 | store_register_using_P (const struct regcache *regcache, |
6125 | struct packet_reg *reg) | |
5a2468f5 | 6126 | { |
4a22f64d | 6127 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6128 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6129 | /* Try storing a single register. */ |
6d820c5c | 6130 | char *buf = rs->buf; |
cfd77fa1 | 6131 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6132 | char *p; |
5a2468f5 | 6133 | |
74ca34ce DJ |
6134 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6135 | return 0; | |
6136 | ||
6137 | if (reg->pnum == -1) | |
6138 | return 0; | |
6139 | ||
ea9c271d | 6140 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6141 | p = buf + strlen (buf); |
56be3814 | 6142 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6143 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6144 | putpkt (rs->buf); |
6145 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6146 | |
74ca34ce DJ |
6147 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6148 | { | |
6149 | case PACKET_OK: | |
6150 | return 1; | |
6151 | case PACKET_ERROR: | |
27a9c0bf MS |
6152 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6153 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6154 | case PACKET_UNKNOWN: |
6155 | return 0; | |
6156 | default: | |
6157 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6158 | } | |
c906108c SS |
6159 | } |
6160 | ||
23860348 MS |
6161 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6162 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6163 | |
6164 | static void | |
56be3814 | 6165 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6166 | { |
d01949b6 | 6167 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6168 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6169 | gdb_byte *regs; |
c906108c SS |
6170 | char *p; |
6171 | ||
193cb69f AC |
6172 | /* Extract all the registers in the regcache copying them into a |
6173 | local buffer. */ | |
6174 | { | |
b323314b | 6175 | int i; |
a744cf53 | 6176 | |
ea9c271d DJ |
6177 | regs = alloca (rsa->sizeof_g_packet); |
6178 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6179 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6180 | { |
ea9c271d | 6181 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6182 | |
b323314b | 6183 | if (r->in_g_packet) |
56be3814 | 6184 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6185 | } |
6186 | } | |
c906108c SS |
6187 | |
6188 | /* Command describes registers byte by byte, | |
6189 | each byte encoded as two hex characters. */ | |
6d820c5c | 6190 | p = rs->buf; |
193cb69f | 6191 | *p++ = 'G'; |
74ca34ce DJ |
6192 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6193 | updated. */ | |
6194 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6195 | putpkt (rs->buf); |
6196 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6197 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6198 | error (_("Could not write registers; remote failure reply '%s'"), |
6199 | rs->buf); | |
c906108c | 6200 | } |
74ca34ce DJ |
6201 | |
6202 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6203 | of the register cache buffer. FIXME: ignores errors. */ | |
6204 | ||
6205 | static void | |
28439f5e PA |
6206 | remote_store_registers (struct target_ops *ops, |
6207 | struct regcache *regcache, int regnum) | |
74ca34ce | 6208 | { |
74ca34ce DJ |
6209 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6210 | int i; | |
6211 | ||
e6e4e701 | 6212 | set_remote_traceframe (); |
79d7f229 | 6213 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6214 | |
6215 | if (regnum >= 0) | |
6216 | { | |
6217 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6218 | |
74ca34ce DJ |
6219 | gdb_assert (reg != NULL); |
6220 | ||
6221 | /* Always prefer to store registers using the 'P' packet if | |
6222 | possible; we often change only a small number of registers. | |
6223 | Sometimes we change a larger number; we'd need help from a | |
6224 | higher layer to know to use 'G'. */ | |
56be3814 | 6225 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6226 | return; |
6227 | ||
6228 | /* For now, don't complain if we have no way to write the | |
6229 | register. GDB loses track of unavailable registers too | |
6230 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6231 | any way to read the register, either... */ |
74ca34ce DJ |
6232 | if (!reg->in_g_packet) |
6233 | return; | |
6234 | ||
56be3814 | 6235 | store_registers_using_G (regcache); |
74ca34ce DJ |
6236 | return; |
6237 | } | |
6238 | ||
56be3814 | 6239 | store_registers_using_G (regcache); |
74ca34ce | 6240 | |
4a22f64d | 6241 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6242 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6243 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6244 | /* See above for why we do not issue an error here. */ |
6245 | continue; | |
6246 | } | |
c906108c SS |
6247 | \f |
6248 | ||
6249 | /* Return the number of hex digits in num. */ | |
6250 | ||
6251 | static int | |
fba45db2 | 6252 | hexnumlen (ULONGEST num) |
c906108c SS |
6253 | { |
6254 | int i; | |
6255 | ||
6256 | for (i = 0; num != 0; i++) | |
6257 | num >>= 4; | |
6258 | ||
6259 | return max (i, 1); | |
6260 | } | |
6261 | ||
2df3850c | 6262 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6263 | |
6264 | static int | |
fba45db2 | 6265 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6266 | { |
c906108c | 6267 | int len = hexnumlen (num); |
a744cf53 | 6268 | |
2df3850c JM |
6269 | return hexnumnstr (buf, num, len); |
6270 | } | |
6271 | ||
c906108c | 6272 | |
2df3850c | 6273 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6274 | |
2df3850c | 6275 | static int |
fba45db2 | 6276 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6277 | { |
6278 | int i; | |
6279 | ||
6280 | buf[width] = '\0'; | |
6281 | ||
6282 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6283 | { |
c5aa993b | 6284 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6285 | num >>= 4; |
6286 | } | |
6287 | ||
2df3850c | 6288 | return width; |
c906108c SS |
6289 | } |
6290 | ||
23860348 | 6291 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6292 | |
6293 | static CORE_ADDR | |
fba45db2 | 6294 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6295 | { |
911c95a5 | 6296 | int address_size = remote_address_size; |
a744cf53 | 6297 | |
911c95a5 UW |
6298 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6299 | if (!address_size) | |
1cf3db46 | 6300 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6301 | |
6302 | if (address_size > 0 | |
6303 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6304 | { |
6305 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6306 | in a ULONGEST variable. */ |
c906108c | 6307 | ULONGEST mask = 1; |
a744cf53 | 6308 | |
911c95a5 | 6309 | mask = (mask << address_size) - 1; |
c906108c SS |
6310 | addr &= mask; |
6311 | } | |
6312 | return addr; | |
6313 | } | |
6314 | ||
a31ea83d DJ |
6315 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6316 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6317 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6318 | (which may be more than *OUT_LEN due to escape characters). The | |
6319 | total number of bytes in the output buffer will be at most | |
6320 | OUT_MAXLEN. */ | |
6321 | ||
6322 | static int | |
6323 | remote_escape_output (const gdb_byte *buffer, int len, | |
6324 | gdb_byte *out_buf, int *out_len, | |
6325 | int out_maxlen) | |
6326 | { | |
6327 | int input_index, output_index; | |
6328 | ||
6329 | output_index = 0; | |
6330 | for (input_index = 0; input_index < len; input_index++) | |
6331 | { | |
6332 | gdb_byte b = buffer[input_index]; | |
6333 | ||
6334 | if (b == '$' || b == '#' || b == '}') | |
6335 | { | |
6336 | /* These must be escaped. */ | |
6337 | if (output_index + 2 > out_maxlen) | |
6338 | break; | |
6339 | out_buf[output_index++] = '}'; | |
6340 | out_buf[output_index++] = b ^ 0x20; | |
6341 | } | |
6342 | else | |
6343 | { | |
6344 | if (output_index + 1 > out_maxlen) | |
6345 | break; | |
6346 | out_buf[output_index++] = b; | |
6347 | } | |
6348 | } | |
6349 | ||
6350 | *out_len = input_index; | |
6351 | return output_index; | |
6352 | } | |
6353 | ||
0876f84a DJ |
6354 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6355 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6356 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6357 | ||
6358 | This function reverses remote_escape_output. It allows more | |
6359 | escaped characters than that function does, in particular because | |
6360 | '*' must be escaped to avoid the run-length encoding processing | |
6361 | in reading packets. */ | |
6362 | ||
6363 | static int | |
6364 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6365 | gdb_byte *out_buf, int out_maxlen) | |
6366 | { | |
6367 | int input_index, output_index; | |
6368 | int escaped; | |
6369 | ||
6370 | output_index = 0; | |
6371 | escaped = 0; | |
6372 | for (input_index = 0; input_index < len; input_index++) | |
6373 | { | |
6374 | gdb_byte b = buffer[input_index]; | |
6375 | ||
6376 | if (output_index + 1 > out_maxlen) | |
6377 | { | |
6378 | warning (_("Received too much data from remote target;" | |
6379 | " ignoring overflow.")); | |
6380 | return output_index; | |
6381 | } | |
6382 | ||
6383 | if (escaped) | |
6384 | { | |
6385 | out_buf[output_index++] = b ^ 0x20; | |
6386 | escaped = 0; | |
6387 | } | |
6388 | else if (b == '}') | |
6389 | escaped = 1; | |
6390 | else | |
6391 | out_buf[output_index++] = b; | |
6392 | } | |
6393 | ||
6394 | if (escaped) | |
6395 | error (_("Unmatched escape character in target response.")); | |
6396 | ||
6397 | return output_index; | |
6398 | } | |
6399 | ||
c906108c SS |
6400 | /* Determine whether the remote target supports binary downloading. |
6401 | This is accomplished by sending a no-op memory write of zero length | |
6402 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6403 | the whole packet, since many stubs strip the eighth bit and |
6404 | subsequently compute a wrong checksum, which causes real havoc with | |
6405 | remote_write_bytes. | |
7a292a7a | 6406 | |
96baa820 | 6407 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6408 | clean. In cases like this, the user should clear "remote |
23860348 | 6409 | X-packet". */ |
96baa820 | 6410 | |
c906108c | 6411 | static void |
fba45db2 | 6412 | check_binary_download (CORE_ADDR addr) |
c906108c | 6413 | { |
d01949b6 | 6414 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6415 | |
444abaca | 6416 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6417 | { |
96baa820 JM |
6418 | case PACKET_DISABLE: |
6419 | break; | |
6420 | case PACKET_ENABLE: | |
6421 | break; | |
6422 | case PACKET_SUPPORT_UNKNOWN: | |
6423 | { | |
96baa820 | 6424 | char *p; |
802188a7 | 6425 | |
2e9f7625 | 6426 | p = rs->buf; |
96baa820 JM |
6427 | *p++ = 'X'; |
6428 | p += hexnumstr (p, (ULONGEST) addr); | |
6429 | *p++ = ','; | |
6430 | p += hexnumstr (p, (ULONGEST) 0); | |
6431 | *p++ = ':'; | |
6432 | *p = '\0'; | |
802188a7 | 6433 | |
2e9f7625 | 6434 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6435 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6436 | |
2e9f7625 | 6437 | if (rs->buf[0] == '\0') |
96baa820 JM |
6438 | { |
6439 | if (remote_debug) | |
6440 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6441 | "binary downloading NOT " |
6442 | "supported by target\n"); | |
444abaca | 6443 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6444 | } |
6445 | else | |
6446 | { | |
6447 | if (remote_debug) | |
6448 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6449 | "binary downloading supported by target\n"); |
444abaca | 6450 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6451 | } |
6452 | break; | |
6453 | } | |
c906108c SS |
6454 | } |
6455 | } | |
6456 | ||
6457 | /* Write memory data directly to the remote machine. | |
6458 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6459 | HEADER is the starting part of the packet. |
c906108c SS |
6460 | MEMADDR is the address in the remote memory space. |
6461 | MYADDR is the address of the buffer in our space. | |
6462 | LEN is the number of bytes. | |
a76d924d DJ |
6463 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6464 | should send data as binary ('X'), or hex-encoded ('M'). | |
6465 | ||
6466 | The function creates packet of the form | |
6467 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6468 | ||
6469 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6470 | ||
6471 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6472 | are omitted. | |
6473 | ||
6474 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6475 | error. Only transfer a single packet. */ |
c906108c | 6476 | |
a76d924d DJ |
6477 | static int |
6478 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
45aa4659 | 6479 | const gdb_byte *myaddr, ssize_t len, |
a76d924d | 6480 | char packet_format, int use_length) |
c906108c | 6481 | { |
6d820c5c | 6482 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6483 | char *p; |
a76d924d DJ |
6484 | char *plen = NULL; |
6485 | int plenlen = 0; | |
917317f4 JM |
6486 | int todo; |
6487 | int nr_bytes; | |
a257b5bb | 6488 | int payload_size; |
6765f3e5 | 6489 | int payload_length; |
a76d924d DJ |
6490 | int header_length; |
6491 | ||
6492 | if (packet_format != 'X' && packet_format != 'M') | |
6493 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6494 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6495 | |
b2182ed2 DJ |
6496 | if (len <= 0) |
6497 | return 0; | |
6498 | ||
3de11b2e | 6499 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6500 | |
6d820c5c DJ |
6501 | /* The packet buffer will be large enough for the payload; |
6502 | get_memory_packet_size ensures this. */ | |
a76d924d | 6503 | rs->buf[0] = '\0'; |
c906108c | 6504 | |
a257b5bb | 6505 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6506 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6507 | ||
a76d924d DJ |
6508 | payload_size -= strlen ("$,:#NN"); |
6509 | if (!use_length) | |
0df8b418 | 6510 | /* The comma won't be used. */ |
a76d924d DJ |
6511 | payload_size += 1; |
6512 | header_length = strlen (header); | |
6513 | payload_size -= header_length; | |
3de11b2e | 6514 | payload_size -= hexnumlen (memaddr); |
c906108c | 6515 | |
a76d924d | 6516 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6517 | |
a76d924d DJ |
6518 | strcat (rs->buf, header); |
6519 | p = rs->buf + strlen (header); | |
6520 | ||
6521 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6522 | if (packet_format == 'X') | |
c906108c | 6523 | { |
23860348 | 6524 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6525 | todo = min (len, payload_size); |
a76d924d DJ |
6526 | if (use_length) |
6527 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6528 | todo = min (todo, payload_size); |
a76d924d DJ |
6529 | } |
6530 | else | |
6531 | { | |
23860348 | 6532 | /* Num bytes that will fit. */ |
a257b5bb | 6533 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6534 | if (use_length) |
6535 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6536 | todo = min (todo, payload_size / 2); |
917317f4 | 6537 | } |
a76d924d | 6538 | |
3de11b2e NS |
6539 | if (todo <= 0) |
6540 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6541 | _("minimum packet size too small to write data")); |
802188a7 | 6542 | |
6765f3e5 DJ |
6543 | /* If we already need another packet, then try to align the end |
6544 | of this packet to a useful boundary. */ | |
6545 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6546 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6547 | ||
a257b5bb | 6548 | /* Append "<memaddr>". */ |
917317f4 JM |
6549 | memaddr = remote_address_masked (memaddr); |
6550 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6551 | |
a76d924d DJ |
6552 | if (use_length) |
6553 | { | |
6554 | /* Append ",". */ | |
6555 | *p++ = ','; | |
802188a7 | 6556 | |
a76d924d DJ |
6557 | /* Append <len>. Retain the location/size of <len>. It may need to |
6558 | be adjusted once the packet body has been created. */ | |
6559 | plen = p; | |
6560 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6561 | p += plenlen; | |
6562 | } | |
a257b5bb AC |
6563 | |
6564 | /* Append ":". */ | |
917317f4 JM |
6565 | *p++ = ':'; |
6566 | *p = '\0'; | |
802188a7 | 6567 | |
a257b5bb | 6568 | /* Append the packet body. */ |
a76d924d | 6569 | if (packet_format == 'X') |
917317f4 | 6570 | { |
917317f4 JM |
6571 | /* Binary mode. Send target system values byte by byte, in |
6572 | increasing byte addresses. Only escape certain critical | |
6573 | characters. */ | |
6765f3e5 DJ |
6574 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6575 | payload_size); | |
6576 | ||
6577 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6578 | a second try to keep the end of the packet aligned. Don't do |
6579 | this if the packet is tiny. */ | |
6580 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6581 | { |
6582 | int new_nr_bytes; | |
6583 | ||
6584 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6585 | - memaddr); | |
6586 | if (new_nr_bytes != nr_bytes) | |
6587 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6588 | p, &nr_bytes, | |
6589 | payload_size); | |
6590 | } | |
6591 | ||
6592 | p += payload_length; | |
a76d924d | 6593 | if (use_length && nr_bytes < todo) |
c906108c | 6594 | { |
802188a7 | 6595 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6596 | and we have actually sent fewer bytes than planned. |
6597 | Fix-up the length field of the packet. Use the same | |
6598 | number of characters as before. */ | |
917317f4 JM |
6599 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6600 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6601 | } |
a76d924d DJ |
6602 | } |
6603 | else | |
6604 | { | |
917317f4 JM |
6605 | /* Normal mode: Send target system values byte by byte, in |
6606 | increasing byte addresses. Each byte is encoded as a two hex | |
6607 | value. */ | |
2644f393 | 6608 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6609 | p += 2 * nr_bytes; |
c906108c | 6610 | } |
802188a7 | 6611 | |
2e9f7625 | 6612 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6613 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6614 | |
2e9f7625 | 6615 | if (rs->buf[0] == 'E') |
917317f4 JM |
6616 | { |
6617 | /* There is no correspondance between what the remote protocol | |
6618 | uses for errors and errno codes. We would like a cleaner way | |
6619 | of representing errors (big enough to include errno codes, | |
6620 | bfd_error codes, and others). But for now just return EIO. */ | |
6621 | errno = EIO; | |
6622 | return 0; | |
6623 | } | |
802188a7 | 6624 | |
23860348 MS |
6625 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6626 | fewer bytes than we'd planned. */ | |
917317f4 | 6627 | return nr_bytes; |
c906108c SS |
6628 | } |
6629 | ||
a76d924d DJ |
6630 | /* Write memory data directly to the remote machine. |
6631 | This does not inform the data cache; the data cache uses this. | |
6632 | MEMADDR is the address in the remote memory space. | |
6633 | MYADDR is the address of the buffer in our space. | |
6634 | LEN is the number of bytes. | |
6635 | ||
6636 | Returns number of bytes transferred, or 0 (setting errno) for | |
6637 | error. Only transfer a single packet. */ | |
6638 | ||
f7605bc2 | 6639 | static int |
45aa4659 | 6640 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
a76d924d DJ |
6641 | { |
6642 | char *packet_format = 0; | |
6643 | ||
6644 | /* Check whether the target supports binary download. */ | |
6645 | check_binary_download (memaddr); | |
6646 | ||
6647 | switch (remote_protocol_packets[PACKET_X].support) | |
6648 | { | |
6649 | case PACKET_ENABLE: | |
6650 | packet_format = "X"; | |
6651 | break; | |
6652 | case PACKET_DISABLE: | |
6653 | packet_format = "M"; | |
6654 | break; | |
6655 | case PACKET_SUPPORT_UNKNOWN: | |
6656 | internal_error (__FILE__, __LINE__, | |
6657 | _("remote_write_bytes: bad internal state")); | |
6658 | default: | |
6659 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6660 | } | |
6661 | ||
6662 | return remote_write_bytes_aux (packet_format, | |
6663 | memaddr, myaddr, len, packet_format[0], 1); | |
6664 | } | |
6665 | ||
c906108c SS |
6666 | /* Read memory data directly from the remote machine. |
6667 | This does not use the data cache; the data cache uses this. | |
6668 | MEMADDR is the address in the remote memory space. | |
6669 | MYADDR is the address of the buffer in our space. | |
6670 | LEN is the number of bytes. | |
6671 | ||
6672 | Returns number of bytes transferred, or 0 for error. */ | |
6673 | ||
f7605bc2 | 6674 | static int |
cfd77fa1 | 6675 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6676 | { |
6d820c5c | 6677 | struct remote_state *rs = get_remote_state (); |
23860348 | 6678 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6679 | char *p; |
6680 | int todo; | |
6681 | int i; | |
c906108c | 6682 | |
b2182ed2 DJ |
6683 | if (len <= 0) |
6684 | return 0; | |
6685 | ||
11cf8741 | 6686 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6687 | /* The packet buffer will be large enough for the payload; |
6688 | get_memory_packet_size ensures this. */ | |
c906108c | 6689 | |
f7605bc2 PA |
6690 | /* Number if bytes that will fit. */ |
6691 | todo = min (len, max_buf_size / 2); | |
c906108c | 6692 | |
f7605bc2 PA |
6693 | /* Construct "m"<memaddr>","<len>". */ |
6694 | memaddr = remote_address_masked (memaddr); | |
6695 | p = rs->buf; | |
6696 | *p++ = 'm'; | |
6697 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6698 | *p++ = ','; | |
6699 | p += hexnumstr (p, (ULONGEST) todo); | |
6700 | *p = '\0'; | |
6701 | putpkt (rs->buf); | |
6702 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6703 | if (rs->buf[0] == 'E' | |
6704 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6705 | && rs->buf[3] == '\0') | |
6706 | { | |
6707 | /* There is no correspondance between what the remote protocol | |
6708 | uses for errors and errno codes. We would like a cleaner way | |
6709 | of representing errors (big enough to include errno codes, | |
6710 | bfd_error codes, and others). But for now just return | |
6711 | EIO. */ | |
6712 | errno = EIO; | |
6713 | return 0; | |
c906108c | 6714 | } |
f7605bc2 PA |
6715 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6716 | characters. */ | |
6717 | p = rs->buf; | |
6718 | i = hex2bin (p, myaddr, todo); | |
6719 | /* Return what we have. Let higher layers handle partial reads. */ | |
6720 | return i; | |
c906108c | 6721 | } |
74531fed PA |
6722 | \f |
6723 | ||
6724 | /* Remote notification handler. */ | |
6725 | ||
6726 | static void | |
6727 | handle_notification (char *buf, size_t length) | |
6728 | { | |
6729 | if (strncmp (buf, "Stop:", 5) == 0) | |
6730 | { | |
6731 | if (pending_stop_reply) | |
0723dbf5 PA |
6732 | { |
6733 | /* We've already parsed the in-flight stop-reply, but the | |
6734 | stub for some reason thought we didn't, possibly due to | |
6735 | timeout on its side. Just ignore it. */ | |
6736 | if (remote_debug) | |
6737 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6738 | } | |
74531fed PA |
6739 | else |
6740 | { | |
6741 | struct cleanup *old_chain; | |
6742 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6743 | |
74531fed PA |
6744 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6745 | ||
6746 | remote_parse_stop_reply (buf + 5, reply); | |
6747 | ||
6748 | discard_cleanups (old_chain); | |
6749 | ||
6750 | /* Be careful to only set it after parsing, since an error | |
6751 | may be thrown then. */ | |
6752 | pending_stop_reply = reply; | |
6753 | ||
6754 | /* Notify the event loop there's a stop reply to acknowledge | |
6755 | and that there may be more events to fetch. */ | |
6756 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6757 | |
6758 | if (remote_debug) | |
6759 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6760 | } |
6761 | } | |
6762 | else | |
6763 | /* We ignore notifications we don't recognize, for compatibility | |
6764 | with newer stubs. */ | |
6765 | ; | |
6766 | } | |
6767 | ||
c906108c SS |
6768 | \f |
6769 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6770 | transferring to or from debugger address BUFFER. Write to inferior |
6771 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6772 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6773 | |
c906108c | 6774 | static int |
961cb7b5 | 6775 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6776 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6777 | struct target_ops *target) |
c906108c | 6778 | { |
4930751a C |
6779 | int res; |
6780 | ||
e6e4e701 | 6781 | set_remote_traceframe (); |
82f73884 PA |
6782 | set_general_thread (inferior_ptid); |
6783 | ||
4930751a | 6784 | if (should_write) |
b2182ed2 | 6785 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6786 | else |
b2182ed2 | 6787 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6788 | |
6789 | return res; | |
c906108c SS |
6790 | } |
6791 | ||
a76d924d DJ |
6792 | /* Sends a packet with content determined by the printf format string |
6793 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6794 | whether the packet was a success, a failure, or unknown. */ | |
6795 | ||
2c0b251b | 6796 | static enum packet_result |
a76d924d DJ |
6797 | remote_send_printf (const char *format, ...) |
6798 | { | |
6799 | struct remote_state *rs = get_remote_state (); | |
6800 | int max_size = get_remote_packet_size (); | |
a76d924d | 6801 | va_list ap; |
a744cf53 | 6802 | |
a76d924d DJ |
6803 | va_start (ap, format); |
6804 | ||
6805 | rs->buf[0] = '\0'; | |
6806 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6807 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6808 | |
6809 | if (putpkt (rs->buf) < 0) | |
6810 | error (_("Communication problem with target.")); | |
6811 | ||
6812 | rs->buf[0] = '\0'; | |
6813 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6814 | ||
6815 | return packet_check_result (rs->buf); | |
6816 | } | |
6817 | ||
6818 | static void | |
6819 | restore_remote_timeout (void *p) | |
6820 | { | |
6821 | int value = *(int *)p; | |
a744cf53 | 6822 | |
a76d924d DJ |
6823 | remote_timeout = value; |
6824 | } | |
6825 | ||
6826 | /* Flash writing can take quite some time. We'll set | |
6827 | effectively infinite timeout for flash operations. | |
6828 | In future, we'll need to decide on a better approach. */ | |
6829 | static const int remote_flash_timeout = 1000; | |
6830 | ||
6831 | static void | |
6832 | remote_flash_erase (struct target_ops *ops, | |
6833 | ULONGEST address, LONGEST length) | |
6834 | { | |
5af949e3 | 6835 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6836 | int saved_remote_timeout = remote_timeout; |
6837 | enum packet_result ret; | |
a76d924d DJ |
6838 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6839 | &saved_remote_timeout); | |
a744cf53 | 6840 | |
a76d924d DJ |
6841 | remote_timeout = remote_flash_timeout; |
6842 | ||
6843 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6844 | phex (address, addr_size), |
a76d924d DJ |
6845 | phex (length, 4)); |
6846 | switch (ret) | |
6847 | { | |
6848 | case PACKET_UNKNOWN: | |
6849 | error (_("Remote target does not support flash erase")); | |
6850 | case PACKET_ERROR: | |
6851 | error (_("Error erasing flash with vFlashErase packet")); | |
6852 | default: | |
6853 | break; | |
6854 | } | |
6855 | ||
6856 | do_cleanups (back_to); | |
6857 | } | |
6858 | ||
6859 | static LONGEST | |
6860 | remote_flash_write (struct target_ops *ops, | |
6861 | ULONGEST address, LONGEST length, | |
6862 | const gdb_byte *data) | |
6863 | { | |
6864 | int saved_remote_timeout = remote_timeout; | |
6865 | int ret; | |
6866 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6867 | &saved_remote_timeout); | |
6868 | ||
6869 | remote_timeout = remote_flash_timeout; | |
6870 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6871 | do_cleanups (back_to); | |
6872 | ||
6873 | return ret; | |
6874 | } | |
6875 | ||
6876 | static void | |
6877 | remote_flash_done (struct target_ops *ops) | |
6878 | { | |
6879 | int saved_remote_timeout = remote_timeout; | |
6880 | int ret; | |
6881 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6882 | &saved_remote_timeout); | |
6883 | ||
6884 | remote_timeout = remote_flash_timeout; | |
6885 | ret = remote_send_printf ("vFlashDone"); | |
6886 | do_cleanups (back_to); | |
6887 | ||
6888 | switch (ret) | |
6889 | { | |
6890 | case PACKET_UNKNOWN: | |
6891 | error (_("Remote target does not support vFlashDone")); | |
6892 | case PACKET_ERROR: | |
6893 | error (_("Error finishing flash operation")); | |
6894 | default: | |
6895 | break; | |
6896 | } | |
6897 | } | |
6898 | ||
c906108c | 6899 | static void |
fba45db2 | 6900 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6901 | { |
6902 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6903 | } | |
6904 | \f | |
6905 | /* Stuff for dealing with the packets which are part of this protocol. | |
6906 | See comment at top of file for details. */ | |
6907 | ||
0876f84a | 6908 | /* Read a single character from the remote end. */ |
c906108c SS |
6909 | |
6910 | static int | |
fba45db2 | 6911 | readchar (int timeout) |
c906108c SS |
6912 | { |
6913 | int ch; | |
6914 | ||
2cd58942 | 6915 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6916 | |
2acceee2 | 6917 | if (ch >= 0) |
0876f84a | 6918 | return ch; |
2acceee2 JM |
6919 | |
6920 | switch ((enum serial_rc) ch) | |
c906108c SS |
6921 | { |
6922 | case SERIAL_EOF: | |
ce5ce7ed | 6923 | pop_target (); |
8a3fe4f8 | 6924 | error (_("Remote connection closed")); |
2acceee2 | 6925 | /* no return */ |
c906108c | 6926 | case SERIAL_ERROR: |
4ac8c4da | 6927 | pop_target (); |
3e43a32a MS |
6928 | perror_with_name (_("Remote communication error. " |
6929 | "Target disconnected.")); | |
2acceee2 | 6930 | /* no return */ |
c906108c | 6931 | case SERIAL_TIMEOUT: |
2acceee2 | 6932 | break; |
c906108c | 6933 | } |
2acceee2 | 6934 | return ch; |
c906108c SS |
6935 | } |
6936 | ||
6d820c5c DJ |
6937 | /* Send the command in *BUF to the remote machine, and read the reply |
6938 | into *BUF. Report an error if we get an error reply. Resize | |
6939 | *BUF using xrealloc if necessary to hold the result, and update | |
6940 | *SIZEOF_BUF. */ | |
c906108c SS |
6941 | |
6942 | static void | |
6d820c5c DJ |
6943 | remote_send (char **buf, |
6944 | long *sizeof_buf) | |
c906108c | 6945 | { |
6d820c5c | 6946 | putpkt (*buf); |
c2d11a7d | 6947 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6948 | |
6d820c5c DJ |
6949 | if ((*buf)[0] == 'E') |
6950 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6951 | } |
6952 | ||
6e5abd65 PA |
6953 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6954 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6955 | etc. The caller is responsible for releasing the returned | |
6956 | memory. */ | |
6957 | ||
6958 | static char * | |
6959 | escape_buffer (const char *buf, int n) | |
6960 | { | |
6961 | struct cleanup *old_chain; | |
6962 | struct ui_file *stb; | |
6963 | char *str; | |
6e5abd65 PA |
6964 | |
6965 | stb = mem_fileopen (); | |
6966 | old_chain = make_cleanup_ui_file_delete (stb); | |
6967 | ||
6968 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6969 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6970 | do_cleanups (old_chain); |
6971 | return str; | |
6972 | } | |
6973 | ||
c906108c SS |
6974 | /* Display a null-terminated packet on stdout, for debugging, using C |
6975 | string notation. */ | |
6976 | ||
6977 | static void | |
fba45db2 | 6978 | print_packet (char *buf) |
c906108c SS |
6979 | { |
6980 | puts_filtered ("\""); | |
43e526b9 | 6981 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6982 | puts_filtered ("\""); |
6983 | } | |
6984 | ||
6985 | int | |
fba45db2 | 6986 | putpkt (char *buf) |
c906108c SS |
6987 | { |
6988 | return putpkt_binary (buf, strlen (buf)); | |
6989 | } | |
6990 | ||
6991 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6992 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6993 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6994 | and for a possible /0 if we are debugging (remote_debug) and want |
6995 | to print the sent packet as a string. */ | |
c906108c SS |
6996 | |
6997 | static int | |
fba45db2 | 6998 | putpkt_binary (char *buf, int cnt) |
c906108c | 6999 | { |
2d717e4f | 7000 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7001 | int i; |
7002 | unsigned char csum = 0; | |
11cf8741 | 7003 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7004 | |
c906108c SS |
7005 | int ch; |
7006 | int tcount = 0; | |
7007 | char *p; | |
7008 | ||
e24a49d8 PA |
7009 | /* Catch cases like trying to read memory or listing threads while |
7010 | we're waiting for a stop reply. The remote server wouldn't be | |
7011 | ready to handle this request, so we'd hang and timeout. We don't | |
7012 | have to worry about this in synchronous mode, because in that | |
7013 | case it's not possible to issue a command while the target is | |
74531fed PA |
7014 | running. This is not a problem in non-stop mode, because in that |
7015 | case, the stub is always ready to process serial input. */ | |
7016 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7017 | error (_("Cannot execute this command while the target is running.")); |
7018 | ||
2d717e4f DJ |
7019 | /* We're sending out a new packet. Make sure we don't look at a |
7020 | stale cached response. */ | |
7021 | rs->cached_wait_status = 0; | |
7022 | ||
c906108c SS |
7023 | /* Copy the packet into buffer BUF2, encapsulating it |
7024 | and giving it a checksum. */ | |
7025 | ||
c906108c SS |
7026 | p = buf2; |
7027 | *p++ = '$'; | |
7028 | ||
7029 | for (i = 0; i < cnt; i++) | |
7030 | { | |
7031 | csum += buf[i]; | |
7032 | *p++ = buf[i]; | |
7033 | } | |
7034 | *p++ = '#'; | |
7035 | *p++ = tohex ((csum >> 4) & 0xf); | |
7036 | *p++ = tohex (csum & 0xf); | |
7037 | ||
7038 | /* Send it over and over until we get a positive ack. */ | |
7039 | ||
7040 | while (1) | |
7041 | { | |
7042 | int started_error_output = 0; | |
7043 | ||
7044 | if (remote_debug) | |
7045 | { | |
6e5abd65 PA |
7046 | struct cleanup *old_chain; |
7047 | char *str; | |
7048 | ||
c906108c | 7049 | *p = '\0'; |
6e5abd65 PA |
7050 | str = escape_buffer (buf2, p - buf2); |
7051 | old_chain = make_cleanup (xfree, str); | |
7052 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7053 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7054 | do_cleanups (old_chain); |
c906108c | 7055 | } |
2cd58942 | 7056 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 7057 | perror_with_name (_("putpkt: write failed")); |
c906108c | 7058 | |
a6f3e723 SL |
7059 | /* If this is a no acks version of the remote protocol, send the |
7060 | packet and move on. */ | |
7061 | if (rs->noack_mode) | |
7062 | break; | |
7063 | ||
74531fed PA |
7064 | /* Read until either a timeout occurs (-2) or '+' is read. |
7065 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7066 | while (1) |
7067 | { | |
7068 | ch = readchar (remote_timeout); | |
7069 | ||
c5aa993b | 7070 | if (remote_debug) |
c906108c SS |
7071 | { |
7072 | switch (ch) | |
7073 | { | |
7074 | case '+': | |
1216fa2c | 7075 | case '-': |
c906108c SS |
7076 | case SERIAL_TIMEOUT: |
7077 | case '$': | |
74531fed | 7078 | case '%': |
c906108c SS |
7079 | if (started_error_output) |
7080 | { | |
7081 | putchar_unfiltered ('\n'); | |
7082 | started_error_output = 0; | |
7083 | } | |
7084 | } | |
7085 | } | |
7086 | ||
7087 | switch (ch) | |
7088 | { | |
7089 | case '+': | |
7090 | if (remote_debug) | |
0f71a2f6 | 7091 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7092 | return 1; |
1216fa2c AC |
7093 | case '-': |
7094 | if (remote_debug) | |
7095 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7096 | /* FALLTHROUGH */ |
c906108c | 7097 | case SERIAL_TIMEOUT: |
c5aa993b | 7098 | tcount++; |
c906108c SS |
7099 | if (tcount > 3) |
7100 | return 0; | |
23860348 | 7101 | break; /* Retransmit buffer. */ |
c906108c SS |
7102 | case '$': |
7103 | { | |
40e3f985 | 7104 | if (remote_debug) |
2bc416ba | 7105 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7106 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7107 | /* It's probably an old response sent because an ACK |
7108 | was lost. Gobble up the packet and ack it so it | |
7109 | doesn't get retransmitted when we resend this | |
7110 | packet. */ | |
6d820c5c | 7111 | skip_frame (); |
d6f7abdf | 7112 | serial_write (remote_desc, "+", 1); |
23860348 | 7113 | continue; /* Now, go look for +. */ |
c906108c | 7114 | } |
74531fed PA |
7115 | |
7116 | case '%': | |
7117 | { | |
7118 | int val; | |
7119 | ||
7120 | /* If we got a notification, handle it, and go back to looking | |
7121 | for an ack. */ | |
7122 | /* We've found the start of a notification. Now | |
7123 | collect the data. */ | |
7124 | val = read_frame (&rs->buf, &rs->buf_size); | |
7125 | if (val >= 0) | |
7126 | { | |
7127 | if (remote_debug) | |
7128 | { | |
6e5abd65 PA |
7129 | struct cleanup *old_chain; |
7130 | char *str; | |
7131 | ||
7132 | str = escape_buffer (rs->buf, val); | |
7133 | old_chain = make_cleanup (xfree, str); | |
7134 | fprintf_unfiltered (gdb_stdlog, | |
7135 | " Notification received: %s\n", | |
7136 | str); | |
7137 | do_cleanups (old_chain); | |
74531fed PA |
7138 | } |
7139 | handle_notification (rs->buf, val); | |
7140 | /* We're in sync now, rewait for the ack. */ | |
7141 | tcount = 0; | |
7142 | } | |
7143 | else | |
7144 | { | |
7145 | if (remote_debug) | |
7146 | { | |
7147 | if (!started_error_output) | |
7148 | { | |
7149 | started_error_output = 1; | |
7150 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7151 | } | |
7152 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7153 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7154 | } | |
7155 | } | |
7156 | continue; | |
7157 | } | |
7158 | /* fall-through */ | |
c906108c SS |
7159 | default: |
7160 | if (remote_debug) | |
7161 | { | |
7162 | if (!started_error_output) | |
7163 | { | |
7164 | started_error_output = 1; | |
0f71a2f6 | 7165 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7166 | } |
0f71a2f6 | 7167 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7168 | } |
7169 | continue; | |
7170 | } | |
23860348 | 7171 | break; /* Here to retransmit. */ |
c906108c SS |
7172 | } |
7173 | ||
7174 | #if 0 | |
7175 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7176 | able to get out next time we call QUIT, without anything as |
7177 | violent as interrupt_query. If we want to provide a way out of | |
7178 | here without getting to the next QUIT, it should be based on | |
7179 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7180 | if (quit_flag) |
7181 | { | |
7182 | quit_flag = 0; | |
7183 | interrupt_query (); | |
7184 | } | |
7185 | #endif | |
7186 | } | |
a6f3e723 | 7187 | return 0; |
c906108c SS |
7188 | } |
7189 | ||
6d820c5c DJ |
7190 | /* Come here after finding the start of a frame when we expected an |
7191 | ack. Do our best to discard the rest of this packet. */ | |
7192 | ||
7193 | static void | |
7194 | skip_frame (void) | |
7195 | { | |
7196 | int c; | |
7197 | ||
7198 | while (1) | |
7199 | { | |
7200 | c = readchar (remote_timeout); | |
7201 | switch (c) | |
7202 | { | |
7203 | case SERIAL_TIMEOUT: | |
7204 | /* Nothing we can do. */ | |
7205 | return; | |
7206 | case '#': | |
7207 | /* Discard the two bytes of checksum and stop. */ | |
7208 | c = readchar (remote_timeout); | |
7209 | if (c >= 0) | |
7210 | c = readchar (remote_timeout); | |
7211 | ||
7212 | return; | |
7213 | case '*': /* Run length encoding. */ | |
7214 | /* Discard the repeat count. */ | |
7215 | c = readchar (remote_timeout); | |
7216 | if (c < 0) | |
7217 | return; | |
7218 | break; | |
7219 | default: | |
7220 | /* A regular character. */ | |
7221 | break; | |
7222 | } | |
7223 | } | |
7224 | } | |
7225 | ||
c906108c | 7226 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7227 | into *BUF, verifying the checksum, length, and handling run-length |
7228 | compression. NUL terminate the buffer. If there is not enough room, | |
7229 | expand *BUF using xrealloc. | |
c906108c | 7230 | |
c2d11a7d JM |
7231 | Returns -1 on error, number of characters in buffer (ignoring the |
7232 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7233 | SERIAL status indications). */ |
c2d11a7d JM |
7234 | |
7235 | static long | |
6d820c5c DJ |
7236 | read_frame (char **buf_p, |
7237 | long *sizeof_buf) | |
c906108c SS |
7238 | { |
7239 | unsigned char csum; | |
c2d11a7d | 7240 | long bc; |
c906108c | 7241 | int c; |
6d820c5c | 7242 | char *buf = *buf_p; |
a6f3e723 | 7243 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7244 | |
7245 | csum = 0; | |
c2d11a7d | 7246 | bc = 0; |
c906108c SS |
7247 | |
7248 | while (1) | |
7249 | { | |
7250 | c = readchar (remote_timeout); | |
c906108c SS |
7251 | switch (c) |
7252 | { | |
7253 | case SERIAL_TIMEOUT: | |
7254 | if (remote_debug) | |
0f71a2f6 | 7255 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7256 | return -1; |
c906108c SS |
7257 | case '$': |
7258 | if (remote_debug) | |
0f71a2f6 JM |
7259 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7260 | gdb_stdlog); | |
23860348 | 7261 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7262 | case '#': |
7263 | { | |
7264 | unsigned char pktcsum; | |
e1b09194 AC |
7265 | int check_0 = 0; |
7266 | int check_1 = 0; | |
c906108c | 7267 | |
c2d11a7d | 7268 | buf[bc] = '\0'; |
c906108c | 7269 | |
e1b09194 AC |
7270 | check_0 = readchar (remote_timeout); |
7271 | if (check_0 >= 0) | |
7272 | check_1 = readchar (remote_timeout); | |
802188a7 | 7273 | |
e1b09194 AC |
7274 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7275 | { | |
7276 | if (remote_debug) | |
2bc416ba | 7277 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7278 | gdb_stdlog); |
e1b09194 AC |
7279 | return -1; |
7280 | } | |
7281 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7282 | { |
7283 | if (remote_debug) | |
2bc416ba | 7284 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7285 | gdb_stdlog); |
40e3f985 FN |
7286 | return -1; |
7287 | } | |
c906108c | 7288 | |
a6f3e723 SL |
7289 | /* Don't recompute the checksum; with no ack packets we |
7290 | don't have any way to indicate a packet retransmission | |
7291 | is necessary. */ | |
7292 | if (rs->noack_mode) | |
7293 | return bc; | |
7294 | ||
e1b09194 | 7295 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7296 | if (csum == pktcsum) |
c2d11a7d | 7297 | return bc; |
c906108c | 7298 | |
c5aa993b | 7299 | if (remote_debug) |
c906108c | 7300 | { |
6e5abd65 PA |
7301 | struct cleanup *old_chain; |
7302 | char *str; | |
7303 | ||
7304 | str = escape_buffer (buf, bc); | |
7305 | old_chain = make_cleanup (xfree, str); | |
7306 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7307 | "Bad checksum, sentsum=0x%x, " |
7308 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7309 | pktcsum, csum, str); |
7310 | do_cleanups (old_chain); | |
c906108c | 7311 | } |
c2d11a7d | 7312 | /* Number of characters in buffer ignoring trailing |
23860348 | 7313 | NULL. */ |
c2d11a7d | 7314 | return -1; |
c906108c | 7315 | } |
23860348 | 7316 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7317 | { |
7318 | int repeat; | |
c906108c | 7319 | |
a744cf53 | 7320 | csum += c; |
b4501125 AC |
7321 | c = readchar (remote_timeout); |
7322 | csum += c; | |
23860348 | 7323 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7324 | |
23860348 | 7325 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7326 | |
6d820c5c | 7327 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7328 | { |
6d820c5c DJ |
7329 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7330 | { | |
7331 | /* Make some more room in the buffer. */ | |
7332 | *sizeof_buf += repeat; | |
7333 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7334 | buf = *buf_p; | |
7335 | } | |
7336 | ||
c2d11a7d JM |
7337 | memset (&buf[bc], buf[bc - 1], repeat); |
7338 | bc += repeat; | |
c2c6d25f JM |
7339 | continue; |
7340 | } | |
7341 | ||
c2d11a7d | 7342 | buf[bc] = '\0'; |
6d820c5c | 7343 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7344 | return -1; |
c2c6d25f | 7345 | } |
c906108c | 7346 | default: |
6d820c5c | 7347 | if (bc >= *sizeof_buf - 1) |
c906108c | 7348 | { |
6d820c5c DJ |
7349 | /* Make some more room in the buffer. */ |
7350 | *sizeof_buf *= 2; | |
7351 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7352 | buf = *buf_p; | |
c906108c SS |
7353 | } |
7354 | ||
6d820c5c DJ |
7355 | buf[bc++] = c; |
7356 | csum += c; | |
7357 | continue; | |
c906108c SS |
7358 | } |
7359 | } | |
7360 | } | |
7361 | ||
7362 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7363 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7364 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7365 | rather than timing out; this is used (in synchronous mode) to wait | |
7366 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7367 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7368 | don't have to change all the calls to getpkt to deal with the | |
7369 | return value, because at the moment I don't know what the right | |
23860348 | 7370 | thing to do it for those. */ |
c906108c | 7371 | void |
6d820c5c DJ |
7372 | getpkt (char **buf, |
7373 | long *sizeof_buf, | |
c2d11a7d | 7374 | int forever) |
d9fcf2fb JM |
7375 | { |
7376 | int timed_out; | |
7377 | ||
7378 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7379 | } | |
7380 | ||
7381 | ||
7382 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7383 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7384 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7385 | rather than timing out; this is used (in synchronous mode) to wait | |
7386 | for a target that is is executing user code to stop. If FOREVER == | |
7387 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7388 | indication of this to the caller. Otherwise return the number of |
7389 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7390 | enough reason to return to the caller. */ | |
7391 | ||
3172dc30 | 7392 | static int |
74531fed PA |
7393 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7394 | int expecting_notif) | |
c906108c | 7395 | { |
2d717e4f | 7396 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7397 | int c; |
7398 | int tries; | |
7399 | int timeout; | |
df4b58fe | 7400 | int val = -1; |
c906108c | 7401 | |
2d717e4f DJ |
7402 | /* We're reading a new response. Make sure we don't look at a |
7403 | previously cached response. */ | |
7404 | rs->cached_wait_status = 0; | |
7405 | ||
6d820c5c | 7406 | strcpy (*buf, "timeout"); |
c906108c SS |
7407 | |
7408 | if (forever) | |
74531fed PA |
7409 | timeout = watchdog > 0 ? watchdog : -1; |
7410 | else if (expecting_notif) | |
7411 | timeout = 0; /* There should already be a char in the buffer. If | |
7412 | not, bail out. */ | |
c906108c SS |
7413 | else |
7414 | timeout = remote_timeout; | |
7415 | ||
7416 | #define MAX_TRIES 3 | |
7417 | ||
74531fed PA |
7418 | /* Process any number of notifications, and then return when |
7419 | we get a packet. */ | |
7420 | for (;;) | |
c906108c | 7421 | { |
74531fed PA |
7422 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7423 | times. */ | |
7424 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7425 | { |
74531fed PA |
7426 | /* This can loop forever if the remote side sends us |
7427 | characters continuously, but if it pauses, we'll get | |
7428 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7429 | we'll count that as a retry. | |
7430 | ||
7431 | Note that even when forever is set, we will only wait | |
7432 | forever prior to the start of a packet. After that, we | |
7433 | expect characters to arrive at a brisk pace. They should | |
7434 | show up within remote_timeout intervals. */ | |
7435 | do | |
7436 | c = readchar (timeout); | |
7437 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7438 | |
7439 | if (c == SERIAL_TIMEOUT) | |
7440 | { | |
74531fed PA |
7441 | if (expecting_notif) |
7442 | return -1; /* Don't complain, it's normal to not get | |
7443 | anything in this case. */ | |
7444 | ||
23860348 | 7445 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7446 | { |
2acceee2 | 7447 | QUIT; |
ce5ce7ed | 7448 | pop_target (); |
489eaeba | 7449 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7450 | } |
c906108c | 7451 | if (remote_debug) |
0f71a2f6 | 7452 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7453 | } |
74531fed PA |
7454 | else |
7455 | { | |
7456 | /* We've found the start of a packet or notification. | |
7457 | Now collect the data. */ | |
7458 | val = read_frame (buf, sizeof_buf); | |
7459 | if (val >= 0) | |
7460 | break; | |
7461 | } | |
7462 | ||
7463 | serial_write (remote_desc, "-", 1); | |
c906108c | 7464 | } |
c906108c | 7465 | |
74531fed PA |
7466 | if (tries > MAX_TRIES) |
7467 | { | |
7468 | /* We have tried hard enough, and just can't receive the | |
7469 | packet/notification. Give up. */ | |
7470 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7471 | |
74531fed PA |
7472 | /* Skip the ack char if we're in no-ack mode. */ |
7473 | if (!rs->noack_mode) | |
7474 | serial_write (remote_desc, "+", 1); | |
7475 | return -1; | |
7476 | } | |
c906108c | 7477 | |
74531fed PA |
7478 | /* If we got an ordinary packet, return that to our caller. */ |
7479 | if (c == '$') | |
c906108c SS |
7480 | { |
7481 | if (remote_debug) | |
43e526b9 | 7482 | { |
6e5abd65 PA |
7483 | struct cleanup *old_chain; |
7484 | char *str; | |
7485 | ||
7486 | str = escape_buffer (*buf, val); | |
7487 | old_chain = make_cleanup (xfree, str); | |
7488 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7489 | do_cleanups (old_chain); | |
43e526b9 | 7490 | } |
a6f3e723 SL |
7491 | |
7492 | /* Skip the ack char if we're in no-ack mode. */ | |
7493 | if (!rs->noack_mode) | |
7494 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7495 | return val; |
c906108c SS |
7496 | } |
7497 | ||
74531fed PA |
7498 | /* If we got a notification, handle it, and go back to looking |
7499 | for a packet. */ | |
7500 | else | |
7501 | { | |
7502 | gdb_assert (c == '%'); | |
7503 | ||
7504 | if (remote_debug) | |
7505 | { | |
6e5abd65 PA |
7506 | struct cleanup *old_chain; |
7507 | char *str; | |
7508 | ||
7509 | str = escape_buffer (*buf, val); | |
7510 | old_chain = make_cleanup (xfree, str); | |
7511 | fprintf_unfiltered (gdb_stdlog, | |
7512 | " Notification received: %s\n", | |
7513 | str); | |
7514 | do_cleanups (old_chain); | |
74531fed | 7515 | } |
c906108c | 7516 | |
74531fed | 7517 | handle_notification (*buf, val); |
c906108c | 7518 | |
74531fed | 7519 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7520 | |
74531fed PA |
7521 | if (expecting_notif) |
7522 | return -1; | |
7523 | } | |
7524 | } | |
7525 | } | |
7526 | ||
7527 | static int | |
7528 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7529 | { | |
7530 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7531 | } | |
7532 | ||
7533 | static int | |
7534 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7535 | { | |
7536 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7537 | } |
74531fed | 7538 | |
c906108c | 7539 | \f |
732f3f12 TT |
7540 | /* A helper function that just calls putpkt; for type correctness. */ |
7541 | ||
7542 | static int | |
7543 | putpkt_for_catch_errors (void *arg) | |
7544 | { | |
7545 | return putpkt (arg); | |
7546 | } | |
7547 | ||
c906108c | 7548 | static void |
7d85a9c0 | 7549 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7550 | { |
23860348 MS |
7551 | /* Use catch_errors so the user can quit from gdb even when we |
7552 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7553 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7554 | |
7555 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7556 | we do or not. For the existing stubs, kill is a noop. */ | |
7557 | target_mourn_inferior (); | |
7558 | } | |
7559 | ||
82f73884 PA |
7560 | static int |
7561 | remote_vkill (int pid, struct remote_state *rs) | |
7562 | { | |
7563 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7564 | return -1; | |
7565 | ||
7566 | /* Tell the remote target to detach. */ | |
bba74b36 | 7567 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7568 | putpkt (rs->buf); |
7569 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7570 | ||
7571 | if (packet_ok (rs->buf, | |
7572 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7573 | return 0; | |
7574 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7575 | return -1; | |
7576 | else | |
7577 | return 1; | |
7578 | } | |
7579 | ||
7580 | static void | |
7d85a9c0 | 7581 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7582 | { |
7583 | int res; | |
7584 | int pid = ptid_get_pid (inferior_ptid); | |
7585 | struct remote_state *rs = get_remote_state (); | |
7586 | ||
7587 | res = remote_vkill (pid, rs); | |
901f9912 | 7588 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7589 | { |
7590 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7591 | to specify the pid. */ | |
7592 | ||
7593 | putpkt ("k"); | |
7594 | #if 0 | |
7595 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7596 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7597 | res = 1; | |
7598 | #else | |
7599 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7600 | we do or not. For the existing stubs, kill is a noop. */ | |
7601 | res = 0; | |
7602 | #endif | |
7603 | } | |
7604 | ||
7605 | if (res != 0) | |
7606 | error (_("Can't kill process")); | |
7607 | ||
82f73884 PA |
7608 | target_mourn_inferior (); |
7609 | } | |
7610 | ||
c906108c | 7611 | static void |
136d6dae | 7612 | remote_mourn (struct target_ops *ops) |
c906108c | 7613 | { |
136d6dae | 7614 | remote_mourn_1 (ops); |
c906108c SS |
7615 | } |
7616 | ||
c906108c SS |
7617 | /* Worker function for remote_mourn. */ |
7618 | static void | |
fba45db2 | 7619 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7620 | { |
7621 | unpush_target (target); | |
ce5ce7ed | 7622 | |
8a2492ee PA |
7623 | /* remote_close takes care of doing most of the clean up. */ |
7624 | generic_mourn_inferior (); | |
c906108c SS |
7625 | } |
7626 | ||
2d717e4f DJ |
7627 | static void |
7628 | extended_remote_mourn_1 (struct target_ops *target) | |
7629 | { | |
7630 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7631 | |
e24a49d8 PA |
7632 | /* In case we got here due to an error, but we're going to stay |
7633 | connected. */ | |
7634 | rs->waiting_for_stop_reply = 0; | |
7635 | ||
74531fed PA |
7636 | /* We're no longer interested in these events. */ |
7637 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7638 | ||
dc1981d7 PA |
7639 | /* If the current general thread belonged to the process we just |
7640 | detached from or has exited, the remote side current general | |
7641 | thread becomes undefined. Considering a case like this: | |
7642 | ||
7643 | - We just got here due to a detach. | |
7644 | - The process that we're detaching from happens to immediately | |
7645 | report a global breakpoint being hit in non-stop mode, in the | |
7646 | same thread we had selected before. | |
7647 | - GDB attaches to this process again. | |
7648 | - This event happens to be the next event we handle. | |
7649 | ||
7650 | GDB would consider that the current general thread didn't need to | |
7651 | be set on the stub side (with Hg), since for all it knew, | |
7652 | GENERAL_THREAD hadn't changed. | |
7653 | ||
7654 | Notice that although in all-stop mode, the remote server always | |
7655 | sets the current thread to the thread reporting the stop event, | |
7656 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7657 | not* change the current thread when reporting a breakpoint hit, | |
7658 | due to the decoupling of event reporting and event handling. | |
7659 | ||
7660 | To keep things simple, we always invalidate our notion of the | |
7661 | current thread. */ | |
7662 | record_currthread (minus_one_ptid); | |
7663 | ||
2d717e4f DJ |
7664 | /* Unlike "target remote", we do not want to unpush the target; then |
7665 | the next time the user says "run", we won't be connected. */ | |
7666 | ||
48aa3c27 PA |
7667 | /* Call common code to mark the inferior as not running. */ |
7668 | generic_mourn_inferior (); | |
7669 | ||
d729566a | 7670 | if (!have_inferiors ()) |
2d717e4f | 7671 | { |
82f73884 PA |
7672 | if (!remote_multi_process_p (rs)) |
7673 | { | |
7674 | /* Check whether the target is running now - some remote stubs | |
7675 | automatically restart after kill. */ | |
7676 | putpkt ("?"); | |
7677 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7678 | ||
7679 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7680 | { | |
3e43a32a MS |
7681 | /* Assume that the target has been restarted. Set |
7682 | inferior_ptid so that bits of core GDB realizes | |
7683 | there's something here, e.g., so that the user can | |
7684 | say "kill" again. */ | |
82f73884 PA |
7685 | inferior_ptid = magic_null_ptid; |
7686 | } | |
82f73884 | 7687 | } |
2d717e4f DJ |
7688 | } |
7689 | } | |
c906108c SS |
7690 | |
7691 | static void | |
136d6dae | 7692 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7693 | { |
136d6dae | 7694 | extended_remote_mourn_1 (ops); |
2d717e4f | 7695 | } |
c906108c | 7696 | |
03583c20 UW |
7697 | static int |
7698 | extended_remote_supports_disable_randomization (void) | |
7699 | { | |
7700 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7701 | == PACKET_ENABLE); | |
7702 | } | |
7703 | ||
7704 | static void | |
7705 | extended_remote_disable_randomization (int val) | |
7706 | { | |
7707 | struct remote_state *rs = get_remote_state (); | |
7708 | char *reply; | |
7709 | ||
bba74b36 YQ |
7710 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7711 | val); | |
03583c20 UW |
7712 | putpkt (rs->buf); |
7713 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7714 | if (*reply == '\0') | |
7715 | error (_("Target does not support QDisableRandomization.")); | |
7716 | if (strcmp (reply, "OK") != 0) | |
7717 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7718 | } | |
7719 | ||
2d717e4f DJ |
7720 | static int |
7721 | extended_remote_run (char *args) | |
7722 | { | |
7723 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7724 | int len; |
c906108c | 7725 | |
2d717e4f DJ |
7726 | /* If the user has disabled vRun support, or we have detected that |
7727 | support is not available, do not try it. */ | |
7728 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7729 | return -1; | |
424163ea | 7730 | |
2d717e4f DJ |
7731 | strcpy (rs->buf, "vRun;"); |
7732 | len = strlen (rs->buf); | |
c906108c | 7733 | |
2d717e4f DJ |
7734 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7735 | error (_("Remote file name too long for run packet")); | |
7736 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7737 | ||
d1a41061 | 7738 | gdb_assert (args != NULL); |
2d717e4f DJ |
7739 | if (*args) |
7740 | { | |
7741 | struct cleanup *back_to; | |
7742 | int i; | |
7743 | char **argv; | |
7744 | ||
d1a41061 | 7745 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7746 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7747 | for (i = 0; argv[i] != NULL; i++) | |
7748 | { | |
7749 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7750 | error (_("Argument list too long for run packet")); | |
7751 | rs->buf[len++] = ';'; | |
7752 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7753 | } | |
7754 | do_cleanups (back_to); | |
7755 | } | |
7756 | ||
7757 | rs->buf[len++] = '\0'; | |
7758 | ||
7759 | putpkt (rs->buf); | |
7760 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7761 | ||
7762 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7763 | { | |
7764 | /* We have a wait response; we don't need it, though. All is well. */ | |
7765 | return 0; | |
7766 | } | |
7767 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7768 | /* It wasn't disabled before, but it is now. */ | |
7769 | return -1; | |
7770 | else | |
7771 | { | |
7772 | if (remote_exec_file[0] == '\0') | |
7773 | error (_("Running the default executable on the remote target failed; " | |
7774 | "try \"set remote exec-file\"?")); | |
7775 | else | |
7776 | error (_("Running \"%s\" on the remote target failed"), | |
7777 | remote_exec_file); | |
7778 | } | |
c906108c SS |
7779 | } |
7780 | ||
2d717e4f DJ |
7781 | /* In the extended protocol we want to be able to do things like |
7782 | "run" and have them basically work as expected. So we need | |
7783 | a special create_inferior function. We support changing the | |
7784 | executable file and the command line arguments, but not the | |
7785 | environment. */ | |
7786 | ||
43ff13b4 | 7787 | static void |
2d717e4f | 7788 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7789 | char **env, int from_tty) |
43ff13b4 | 7790 | { |
43ff13b4 | 7791 | /* If running asynchronously, register the target file descriptor |
23860348 | 7792 | with the event loop. */ |
75c99385 | 7793 | if (target_can_async_p ()) |
2acceee2 | 7794 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7795 | |
03583c20 UW |
7796 | /* Disable address space randomization if requested (and supported). */ |
7797 | if (extended_remote_supports_disable_randomization ()) | |
7798 | extended_remote_disable_randomization (disable_randomization); | |
7799 | ||
43ff13b4 | 7800 | /* Now restart the remote server. */ |
2d717e4f DJ |
7801 | if (extended_remote_run (args) == -1) |
7802 | { | |
7803 | /* vRun was not supported. Fail if we need it to do what the | |
7804 | user requested. */ | |
7805 | if (remote_exec_file[0]) | |
7806 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7807 | if (args[0]) | |
7808 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7809 | |
2d717e4f DJ |
7810 | /* Fall back to "R". */ |
7811 | extended_remote_restart (); | |
7812 | } | |
424163ea | 7813 | |
6c95b8df PA |
7814 | if (!have_inferiors ()) |
7815 | { | |
7816 | /* Clean up from the last time we ran, before we mark the target | |
7817 | running again. This will mark breakpoints uninserted, and | |
7818 | get_offsets may insert breakpoints. */ | |
7819 | init_thread_list (); | |
7820 | init_wait_for_inferior (); | |
7821 | } | |
45280a52 | 7822 | |
49c62f2e | 7823 | add_current_inferior_and_thread (); |
c0a2216e | 7824 | |
2d717e4f DJ |
7825 | /* Get updated offsets, if the stub uses qOffsets. */ |
7826 | get_offsets (); | |
2d717e4f DJ |
7827 | } |
7828 | ||
7829 | static void | |
136d6dae VP |
7830 | extended_remote_create_inferior (struct target_ops *ops, |
7831 | char *exec_file, char *args, | |
2d717e4f DJ |
7832 | char **env, int from_tty) |
7833 | { | |
75c99385 | 7834 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7835 | } |
c906108c | 7836 | \f |
c5aa993b | 7837 | |
b775012e LM |
7838 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7839 | the list of conditions (in agent expression bytecode format), if any, the | |
7840 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 7841 | started from BUF and ended at BUF_END. */ |
b775012e LM |
7842 | |
7843 | static int | |
7844 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
7845 | struct bp_target_info *bp_tgt, char *buf, |
7846 | char *buf_end) | |
b775012e LM |
7847 | { |
7848 | struct agent_expr *aexpr = NULL; | |
7849 | int i, ix; | |
7850 | char *pkt; | |
7851 | char *buf_start = buf; | |
7852 | ||
7853 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7854 | return 0; | |
7855 | ||
7856 | buf += strlen (buf); | |
bba74b36 | 7857 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
7858 | buf++; |
7859 | ||
7860 | /* Send conditions to the target and free the vector. */ | |
7861 | for (ix = 0; | |
7862 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
7863 | ix++) | |
7864 | { | |
bba74b36 | 7865 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
7866 | buf += strlen (buf); |
7867 | for (i = 0; i < aexpr->len; ++i) | |
7868 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
7869 | *buf = '\0'; | |
7870 | } | |
7871 | ||
7872 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
7873 | return 0; | |
7874 | } | |
7875 | ||
8181d85f DJ |
7876 | /* Insert a breakpoint. On targets that have software breakpoint |
7877 | support, we ask the remote target to do the work; on targets | |
7878 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7879 | |
7880 | static int | |
a6d9a66e UW |
7881 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7882 | struct bp_target_info *bp_tgt) | |
c906108c | 7883 | { |
d471ea57 AC |
7884 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7885 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7886 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7887 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7888 | |
444abaca | 7889 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7890 | { |
7c0f6dcc | 7891 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 7892 | struct remote_state *rs; |
bba74b36 | 7893 | char *p, *endbuf; |
7c0f6dcc | 7894 | int bpsize; |
b775012e | 7895 | struct condition_list *cond = NULL; |
4fff2411 | 7896 | |
a1dcb23a | 7897 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7898 | |
7899 | rs = get_remote_state (); | |
7900 | p = rs->buf; | |
bba74b36 | 7901 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 7902 | |
96baa820 JM |
7903 | *(p++) = 'Z'; |
7904 | *(p++) = '0'; | |
7905 | *(p++) = ','; | |
7c0f6dcc | 7906 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7907 | p += hexnumstr (p, addr); |
bba74b36 | 7908 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 7909 | |
b775012e | 7910 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 7911 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 7912 | |
6d820c5c DJ |
7913 | putpkt (rs->buf); |
7914 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7915 | |
6d820c5c | 7916 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7917 | { |
d471ea57 AC |
7918 | case PACKET_ERROR: |
7919 | return -1; | |
7920 | case PACKET_OK: | |
7c0f6dcc JL |
7921 | bp_tgt->placed_address = addr; |
7922 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7923 | return 0; |
7924 | case PACKET_UNKNOWN: | |
7925 | break; | |
96baa820 JM |
7926 | } |
7927 | } | |
c906108c | 7928 | |
a6d9a66e | 7929 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7930 | } |
7931 | ||
7932 | static int | |
a6d9a66e UW |
7933 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7934 | struct bp_target_info *bp_tgt) | |
c906108c | 7935 | { |
8181d85f | 7936 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7937 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7938 | |
444abaca | 7939 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7940 | { |
6d820c5c | 7941 | char *p = rs->buf; |
bba74b36 | 7942 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 7943 | |
96baa820 JM |
7944 | *(p++) = 'z'; |
7945 | *(p++) = '0'; | |
7946 | *(p++) = ','; | |
7947 | ||
8181d85f DJ |
7948 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7949 | p += hexnumstr (p, addr); | |
bba74b36 | 7950 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 7951 | |
6d820c5c DJ |
7952 | putpkt (rs->buf); |
7953 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7954 | |
6d820c5c | 7955 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7956 | } |
7957 | ||
a6d9a66e | 7958 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7959 | } |
7960 | ||
d471ea57 AC |
7961 | static int |
7962 | watchpoint_to_Z_packet (int type) | |
7963 | { | |
7964 | switch (type) | |
7965 | { | |
7966 | case hw_write: | |
bb858e6a | 7967 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7968 | break; |
7969 | case hw_read: | |
bb858e6a | 7970 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7971 | break; |
7972 | case hw_access: | |
bb858e6a | 7973 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7974 | break; |
7975 | default: | |
8e65ff28 | 7976 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7977 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7978 | } |
7979 | } | |
7980 | ||
3c3bea1c | 7981 | static int |
0cf6dd15 TJB |
7982 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7983 | struct expression *cond) | |
96baa820 | 7984 | { |
d01949b6 | 7985 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 7986 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 7987 | char *p; |
d471ea57 | 7988 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7989 | |
444abaca | 7990 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7991 | return 1; |
802188a7 | 7992 | |
bba74b36 | 7993 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 7994 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
7995 | addr = remote_address_masked (addr); |
7996 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 7997 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 7998 | |
6d820c5c DJ |
7999 | putpkt (rs->buf); |
8000 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8001 | |
6d820c5c | 8002 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8003 | { |
8004 | case PACKET_ERROR: | |
d471ea57 | 8005 | return -1; |
85d721b8 PA |
8006 | case PACKET_UNKNOWN: |
8007 | return 1; | |
d471ea57 AC |
8008 | case PACKET_OK: |
8009 | return 0; | |
8010 | } | |
8e65ff28 | 8011 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8012 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8013 | } |
8014 | ||
283002cf MR |
8015 | static int |
8016 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8017 | CORE_ADDR start, int length) | |
8018 | { | |
8019 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8020 | ||
8021 | return diff < length; | |
8022 | } | |
8023 | ||
d471ea57 | 8024 | |
3c3bea1c | 8025 | static int |
0cf6dd15 TJB |
8026 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8027 | struct expression *cond) | |
96baa820 | 8028 | { |
d01949b6 | 8029 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8030 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8031 | char *p; |
d471ea57 AC |
8032 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8033 | ||
444abaca | 8034 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8035 | return -1; |
802188a7 | 8036 | |
bba74b36 | 8037 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8038 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8039 | addr = remote_address_masked (addr); |
8040 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8041 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8042 | putpkt (rs->buf); |
8043 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8044 | |
6d820c5c | 8045 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8046 | { |
8047 | case PACKET_ERROR: | |
8048 | case PACKET_UNKNOWN: | |
8049 | return -1; | |
8050 | case PACKET_OK: | |
8051 | return 0; | |
8052 | } | |
8e65ff28 | 8053 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8054 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8055 | } |
8056 | ||
3c3bea1c | 8057 | |
501eef12 | 8058 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8059 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8060 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8061 | |
480a3f21 PW |
8062 | static int |
8063 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8064 | { | |
8065 | if (remote_hw_watchpoint_length_limit == 0) | |
8066 | return 0; | |
8067 | else if (remote_hw_watchpoint_length_limit < 0) | |
8068 | return 1; | |
8069 | else if (len <= remote_hw_watchpoint_length_limit) | |
8070 | return 1; | |
8071 | else | |
8072 | return 0; | |
8073 | } | |
8074 | ||
b9362cc7 | 8075 | static int |
3c3bea1c | 8076 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8077 | { |
3c3bea1c GS |
8078 | if (type == bp_hardware_breakpoint) |
8079 | { | |
8080 | if (remote_hw_breakpoint_limit == 0) | |
8081 | return 0; | |
501eef12 AC |
8082 | else if (remote_hw_breakpoint_limit < 0) |
8083 | return 1; | |
3c3bea1c GS |
8084 | else if (cnt <= remote_hw_breakpoint_limit) |
8085 | return 1; | |
8086 | } | |
8087 | else | |
8088 | { | |
8089 | if (remote_hw_watchpoint_limit == 0) | |
8090 | return 0; | |
501eef12 AC |
8091 | else if (remote_hw_watchpoint_limit < 0) |
8092 | return 1; | |
3c3bea1c GS |
8093 | else if (ot) |
8094 | return -1; | |
8095 | else if (cnt <= remote_hw_watchpoint_limit) | |
8096 | return 1; | |
8097 | } | |
8098 | return -1; | |
8099 | } | |
8100 | ||
b9362cc7 | 8101 | static int |
3c3bea1c GS |
8102 | remote_stopped_by_watchpoint (void) |
8103 | { | |
82f73884 | 8104 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
8105 | } |
8106 | ||
4aa7a7f5 JJ |
8107 | static int |
8108 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8109 | { |
4aa7a7f5 | 8110 | int rc = 0; |
a744cf53 | 8111 | |
d983da9c | 8112 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
8113 | { |
8114 | *addr_p = remote_watch_data_address; | |
8115 | rc = 1; | |
8116 | } | |
8117 | ||
8118 | return rc; | |
3c3bea1c GS |
8119 | } |
8120 | ||
8121 | ||
8122 | static int | |
a6d9a66e UW |
8123 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8124 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8125 | { |
8181d85f | 8126 | CORE_ADDR addr; |
4fff2411 | 8127 | struct remote_state *rs; |
bba74b36 | 8128 | char *p, *endbuf; |
802188a7 | 8129 | |
c8189ed1 | 8130 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8131 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8132 | |
a1dcb23a | 8133 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8134 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8135 | |
444abaca | 8136 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8137 | return -1; |
2bc416ba | 8138 | |
4fff2411 JZ |
8139 | rs = get_remote_state (); |
8140 | p = rs->buf; | |
bba74b36 | 8141 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8142 | |
96baa820 JM |
8143 | *(p++) = 'Z'; |
8144 | *(p++) = '1'; | |
8145 | *(p++) = ','; | |
802188a7 | 8146 | |
8181d85f | 8147 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8148 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8149 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8150 | |
b775012e | 8151 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8152 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8153 | |
6d820c5c DJ |
8154 | putpkt (rs->buf); |
8155 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8156 | |
6d820c5c | 8157 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8158 | { |
8159 | case PACKET_ERROR: | |
8160 | case PACKET_UNKNOWN: | |
8161 | return -1; | |
8162 | case PACKET_OK: | |
8163 | return 0; | |
8164 | } | |
8e65ff28 | 8165 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8166 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8167 | } |
8168 | ||
d471ea57 | 8169 | |
802188a7 | 8170 | static int |
a6d9a66e UW |
8171 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8172 | struct bp_target_info *bp_tgt) | |
96baa820 | 8173 | { |
8181d85f | 8174 | CORE_ADDR addr; |
d01949b6 | 8175 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8176 | char *p = rs->buf; |
bba74b36 | 8177 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8178 | |
444abaca | 8179 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8180 | return -1; |
802188a7 | 8181 | |
96baa820 JM |
8182 | *(p++) = 'z'; |
8183 | *(p++) = '1'; | |
8184 | *(p++) = ','; | |
802188a7 | 8185 | |
8181d85f | 8186 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8187 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8188 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8189 | |
6d820c5c DJ |
8190 | putpkt (rs->buf); |
8191 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8192 | |
6d820c5c | 8193 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8194 | { |
8195 | case PACKET_ERROR: | |
8196 | case PACKET_UNKNOWN: | |
8197 | return -1; | |
8198 | case PACKET_OK: | |
8199 | return 0; | |
8200 | } | |
8e65ff28 | 8201 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8202 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8203 | } |
96baa820 | 8204 | |
23860348 | 8205 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8206 | |
c5aa993b JM |
8207 | static unsigned long crc32_table[256] = |
8208 | {0, 0}; | |
c906108c SS |
8209 | |
8210 | static unsigned long | |
4a5e7a5b | 8211 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8212 | { |
c5aa993b | 8213 | if (!crc32_table[1]) |
c906108c | 8214 | { |
23860348 | 8215 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8216 | int i, j; |
8217 | unsigned int c; | |
8218 | ||
8219 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8220 | { |
8221 | for (c = i << 24, j = 8; j > 0; --j) | |
8222 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8223 | crc32_table[i] = c; | |
8224 | } | |
c906108c SS |
8225 | } |
8226 | ||
8227 | while (len--) | |
8228 | { | |
8229 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8230 | buf++; | |
8231 | } | |
8232 | return crc; | |
8233 | } | |
8234 | ||
4a5e7a5b PA |
8235 | /* Verify memory using the "qCRC:" request. */ |
8236 | ||
8237 | static int | |
8238 | remote_verify_memory (struct target_ops *ops, | |
8239 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8240 | { | |
8241 | struct remote_state *rs = get_remote_state (); | |
8242 | unsigned long host_crc, target_crc; | |
8243 | char *tmp; | |
8244 | ||
8245 | /* FIXME: assumes lma can fit into long. */ | |
8246 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8247 | (long) lma, (long) size); | |
8248 | putpkt (rs->buf); | |
8249 | ||
8250 | /* Be clever; compute the host_crc before waiting for target | |
8251 | reply. */ | |
8252 | host_crc = crc32 (data, size, 0xffffffff); | |
8253 | ||
8254 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8255 | if (rs->buf[0] == 'E') | |
8256 | return -1; | |
8257 | ||
8258 | if (rs->buf[0] != 'C') | |
8259 | error (_("remote target does not support this operation")); | |
8260 | ||
8261 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8262 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8263 | ||
8264 | return (host_crc == target_crc); | |
8265 | } | |
8266 | ||
c906108c SS |
8267 | /* compare-sections command |
8268 | ||
8269 | With no arguments, compares each loadable section in the exec bfd | |
8270 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8271 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8272 | |
c906108c | 8273 | static void |
fba45db2 | 8274 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8275 | { |
8276 | asection *s; | |
c906108c | 8277 | struct cleanup *old_chain; |
085dd6e6 | 8278 | char *sectdata; |
ce359b09 | 8279 | const char *sectname; |
c906108c SS |
8280 | bfd_size_type size; |
8281 | bfd_vma lma; | |
8282 | int matched = 0; | |
8283 | int mismatched = 0; | |
4a5e7a5b | 8284 | int res; |
c906108c SS |
8285 | |
8286 | if (!exec_bfd) | |
8a3fe4f8 | 8287 | error (_("command cannot be used without an exec file")); |
c906108c | 8288 | |
c5aa993b | 8289 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8290 | { |
8291 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8292 | continue; /* Skip non-loadable section. */ |
c906108c | 8293 | |
2c500098 | 8294 | size = bfd_get_section_size (s); |
c906108c | 8295 | if (size == 0) |
0df8b418 | 8296 | continue; /* Skip zero-length section. */ |
c906108c | 8297 | |
ce359b09 | 8298 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8299 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8300 | continue; /* Not the section selected by user. */ |
c906108c | 8301 | |
0df8b418 | 8302 | matched = 1; /* Do this section. */ |
c906108c | 8303 | lma = s->lma; |
c906108c | 8304 | |
c906108c | 8305 | sectdata = xmalloc (size); |
b8c9b27d | 8306 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8307 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8308 | |
4a5e7a5b PA |
8309 | res = target_verify_memory (sectdata, lma, size); |
8310 | ||
8311 | if (res == -1) | |
5af949e3 UW |
8312 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8313 | paddress (target_gdbarch, lma), | |
8314 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8315 | |
5af949e3 UW |
8316 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8317 | paddress (target_gdbarch, lma), | |
8318 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8319 | if (res) |
c906108c SS |
8320 | printf_filtered ("matched.\n"); |
8321 | else | |
c5aa993b JM |
8322 | { |
8323 | printf_filtered ("MIS-MATCHED!\n"); | |
8324 | mismatched++; | |
8325 | } | |
c906108c SS |
8326 | |
8327 | do_cleanups (old_chain); | |
8328 | } | |
8329 | if (mismatched > 0) | |
8a3fe4f8 AC |
8330 | warning (_("One or more sections of the remote executable does not match\n\ |
8331 | the loaded file\n")); | |
c906108c | 8332 | if (args && !matched) |
a3f17187 | 8333 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8334 | } |
8335 | ||
0e7f50da UW |
8336 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8337 | into remote target. The number of bytes written to the remote | |
8338 | target is returned, or -1 for error. */ | |
8339 | ||
8340 | static LONGEST | |
8341 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8342 | const char *annex, const gdb_byte *writebuf, | |
8343 | ULONGEST offset, LONGEST len, | |
8344 | struct packet_config *packet) | |
8345 | { | |
8346 | int i, buf_len; | |
8347 | ULONGEST n; | |
0e7f50da UW |
8348 | struct remote_state *rs = get_remote_state (); |
8349 | int max_size = get_memory_write_packet_size (); | |
8350 | ||
8351 | if (packet->support == PACKET_DISABLE) | |
8352 | return -1; | |
8353 | ||
8354 | /* Insert header. */ | |
8355 | i = snprintf (rs->buf, max_size, | |
8356 | "qXfer:%s:write:%s:%s:", | |
8357 | object_name, annex ? annex : "", | |
8358 | phex_nz (offset, sizeof offset)); | |
8359 | max_size -= (i + 1); | |
8360 | ||
8361 | /* Escape as much data as fits into rs->buf. */ | |
8362 | buf_len = remote_escape_output | |
8363 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8364 | ||
8365 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8366 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8367 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8368 | return -1; | |
8369 | ||
8370 | unpack_varlen_hex (rs->buf, &n); | |
8371 | return n; | |
8372 | } | |
8373 | ||
0876f84a DJ |
8374 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8375 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8376 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8377 | The number of bytes read may be less than LEN without indicating an | |
8378 | EOF. PACKET is checked and updated to indicate whether the remote | |
8379 | target supports this object. */ | |
8380 | ||
8381 | static LONGEST | |
8382 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8383 | const char *annex, | |
8384 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8385 | struct packet_config *packet) | |
8386 | { | |
8387 | static char *finished_object; | |
8388 | static char *finished_annex; | |
8389 | static ULONGEST finished_offset; | |
8390 | ||
8391 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8392 | LONGEST i, n, packet_len; |
8393 | ||
8394 | if (packet->support == PACKET_DISABLE) | |
8395 | return -1; | |
8396 | ||
8397 | /* Check whether we've cached an end-of-object packet that matches | |
8398 | this request. */ | |
8399 | if (finished_object) | |
8400 | { | |
8401 | if (strcmp (object_name, finished_object) == 0 | |
8402 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8403 | && offset == finished_offset) | |
8404 | return 0; | |
8405 | ||
8406 | /* Otherwise, we're now reading something different. Discard | |
8407 | the cache. */ | |
8408 | xfree (finished_object); | |
8409 | xfree (finished_annex); | |
8410 | finished_object = NULL; | |
8411 | finished_annex = NULL; | |
8412 | } | |
8413 | ||
8414 | /* Request only enough to fit in a single packet. The actual data | |
8415 | may not, since we don't know how much of it will need to be escaped; | |
8416 | the target is free to respond with slightly less data. We subtract | |
8417 | five to account for the response type and the protocol frame. */ | |
8418 | n = min (get_remote_packet_size () - 5, len); | |
8419 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8420 | object_name, annex ? annex : "", | |
8421 | phex_nz (offset, sizeof offset), | |
8422 | phex_nz (n, sizeof n)); | |
8423 | i = putpkt (rs->buf); | |
8424 | if (i < 0) | |
8425 | return -1; | |
8426 | ||
8427 | rs->buf[0] = '\0'; | |
8428 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8429 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8430 | return -1; | |
8431 | ||
8432 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8433 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8434 | ||
8435 | /* 'm' means there is (or at least might be) more data after this | |
8436 | batch. That does not make sense unless there's at least one byte | |
8437 | of data in this reply. */ | |
8438 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8439 | error (_("Remote qXfer reply contained no data.")); | |
8440 | ||
8441 | /* Got some data. */ | |
8442 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8443 | ||
8444 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8445 | or possibly empty. If we have the final block of a non-empty |
8446 | object, record this fact to bypass a subsequent partial read. */ | |
8447 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8448 | { |
8449 | finished_object = xstrdup (object_name); | |
8450 | finished_annex = xstrdup (annex ? annex : ""); | |
8451 | finished_offset = offset + i; | |
8452 | } | |
8453 | ||
8454 | return i; | |
8455 | } | |
8456 | ||
1e3ff5ad | 8457 | static LONGEST |
4b8a223f | 8458 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8459 | const char *annex, gdb_byte *readbuf, |
8460 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8461 | { |
82f73884 | 8462 | struct remote_state *rs; |
c906108c | 8463 | int i; |
6d820c5c | 8464 | char *p2; |
1e3ff5ad | 8465 | char query_type; |
c906108c | 8466 | |
e6e4e701 | 8467 | set_remote_traceframe (); |
82f73884 PA |
8468 | set_general_thread (inferior_ptid); |
8469 | ||
8470 | rs = get_remote_state (); | |
8471 | ||
b2182ed2 | 8472 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8473 | if (object == TARGET_OBJECT_MEMORY) |
8474 | { | |
8475 | int xfered; | |
a744cf53 | 8476 | |
21e3b9b9 DJ |
8477 | errno = 0; |
8478 | ||
2d717e4f DJ |
8479 | /* If the remote target is connected but not running, we should |
8480 | pass this request down to a lower stratum (e.g. the executable | |
8481 | file). */ | |
8482 | if (!target_has_execution) | |
8483 | return 0; | |
8484 | ||
21e3b9b9 | 8485 | if (writebuf != NULL) |
b2182ed2 | 8486 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8487 | else |
b2182ed2 | 8488 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8489 | |
8490 | if (xfered > 0) | |
8491 | return xfered; | |
8492 | else if (xfered == 0 && errno == 0) | |
8493 | return 0; | |
8494 | else | |
8495 | return -1; | |
8496 | } | |
8497 | ||
0df8b418 | 8498 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8499 | if (object == TARGET_OBJECT_SPU) |
8500 | { | |
8501 | if (readbuf) | |
8502 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8503 | &remote_protocol_packets | |
8504 | [PACKET_qXfer_spu_read]); | |
8505 | else | |
8506 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8507 | &remote_protocol_packets | |
8508 | [PACKET_qXfer_spu_write]); | |
8509 | } | |
8510 | ||
4aa995e1 PA |
8511 | /* Handle extra signal info using qxfer packets. */ |
8512 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8513 | { | |
8514 | if (readbuf) | |
8515 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8516 | &remote_protocol_packets | |
8517 | [PACKET_qXfer_siginfo_read]); | |
8518 | else | |
3e43a32a MS |
8519 | return remote_write_qxfer (ops, "siginfo", annex, |
8520 | writebuf, offset, len, | |
4aa995e1 PA |
8521 | &remote_protocol_packets |
8522 | [PACKET_qXfer_siginfo_write]); | |
8523 | } | |
8524 | ||
0fb4aa4b PA |
8525 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8526 | { | |
8527 | if (readbuf) | |
3e43a32a MS |
8528 | return remote_read_qxfer (ops, "statictrace", annex, |
8529 | readbuf, offset, len, | |
0fb4aa4b PA |
8530 | &remote_protocol_packets |
8531 | [PACKET_qXfer_statictrace_read]); | |
8532 | else | |
8533 | return -1; | |
8534 | } | |
8535 | ||
a76d924d DJ |
8536 | /* Only handle flash writes. */ |
8537 | if (writebuf != NULL) | |
8538 | { | |
8539 | LONGEST xfered; | |
8540 | ||
8541 | switch (object) | |
8542 | { | |
8543 | case TARGET_OBJECT_FLASH: | |
8544 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8545 | ||
8546 | if (xfered > 0) | |
8547 | return xfered; | |
8548 | else if (xfered == 0 && errno == 0) | |
8549 | return 0; | |
8550 | else | |
8551 | return -1; | |
8552 | ||
8553 | default: | |
8554 | return -1; | |
8555 | } | |
8556 | } | |
4b8a223f | 8557 | |
1e3ff5ad AC |
8558 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8559 | objects!!! Instead specify new query packets. */ | |
8560 | switch (object) | |
c906108c | 8561 | { |
1e3ff5ad AC |
8562 | case TARGET_OBJECT_AVR: |
8563 | query_type = 'R'; | |
8564 | break; | |
802188a7 RM |
8565 | |
8566 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8567 | gdb_assert (annex == NULL); |
8568 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8569 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8570 | |
23181151 DJ |
8571 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8572 | return remote_read_qxfer | |
8573 | (ops, "features", annex, readbuf, offset, len, | |
8574 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8575 | ||
cfa9d6d9 DJ |
8576 | case TARGET_OBJECT_LIBRARIES: |
8577 | return remote_read_qxfer | |
8578 | (ops, "libraries", annex, readbuf, offset, len, | |
8579 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8580 | ||
2268b414 JK |
8581 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8582 | return remote_read_qxfer | |
8583 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8584 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8585 | ||
fd79ecee DJ |
8586 | case TARGET_OBJECT_MEMORY_MAP: |
8587 | gdb_assert (annex == NULL); | |
8588 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8589 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8590 | ||
07e059b5 VP |
8591 | case TARGET_OBJECT_OSDATA: |
8592 | /* Should only get here if we're connected. */ | |
8593 | gdb_assert (remote_desc); | |
8594 | return remote_read_qxfer | |
8595 | (ops, "osdata", annex, readbuf, offset, len, | |
8596 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8597 | ||
dc146f7c VP |
8598 | case TARGET_OBJECT_THREADS: |
8599 | gdb_assert (annex == NULL); | |
8600 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8601 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8602 | ||
b3b9301e PA |
8603 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8604 | gdb_assert (annex == NULL); | |
8605 | return remote_read_qxfer | |
8606 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8607 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8608 | |
8609 | case TARGET_OBJECT_FDPIC: | |
8610 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8611 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8612 | |
8613 | case TARGET_OBJECT_OPENVMS_UIB: | |
8614 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8615 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8616 | ||
1e3ff5ad | 8617 | default: |
c906108c SS |
8618 | return -1; |
8619 | } | |
8620 | ||
4b8a223f | 8621 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8622 | buffer size. */ |
4b8a223f | 8623 | if (offset == 0 && len == 0) |
ea9c271d | 8624 | return (get_remote_packet_size ()); |
0df8b418 | 8625 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8626 | large enough let the caller deal with it. */ |
ea9c271d | 8627 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8628 | return -1; |
ea9c271d | 8629 | len = get_remote_packet_size (); |
1e3ff5ad | 8630 | |
23860348 | 8631 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8632 | if (!remote_desc) |
8a3fe4f8 | 8633 | error (_("remote query is only available after target open")); |
c906108c | 8634 | |
1e3ff5ad | 8635 | gdb_assert (annex != NULL); |
4b8a223f | 8636 | gdb_assert (readbuf != NULL); |
c906108c | 8637 | |
6d820c5c | 8638 | p2 = rs->buf; |
c906108c SS |
8639 | *p2++ = 'q'; |
8640 | *p2++ = query_type; | |
8641 | ||
23860348 MS |
8642 | /* We used one buffer char for the remote protocol q command and |
8643 | another for the query type. As the remote protocol encapsulation | |
8644 | uses 4 chars plus one extra in case we are debugging | |
8645 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8646 | string. */ | |
c906108c | 8647 | i = 0; |
ea9c271d | 8648 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8649 | { |
1e3ff5ad AC |
8650 | /* Bad caller may have sent forbidden characters. */ |
8651 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8652 | *p2++ = annex[i]; | |
c906108c SS |
8653 | i++; |
8654 | } | |
1e3ff5ad AC |
8655 | *p2 = '\0'; |
8656 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8657 | |
6d820c5c | 8658 | i = putpkt (rs->buf); |
c5aa993b JM |
8659 | if (i < 0) |
8660 | return i; | |
c906108c | 8661 | |
6d820c5c DJ |
8662 | getpkt (&rs->buf, &rs->buf_size, 0); |
8663 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8664 | |
cfd77fa1 | 8665 | return strlen ((char *) readbuf); |
c906108c SS |
8666 | } |
8667 | ||
08388c79 DE |
8668 | static int |
8669 | remote_search_memory (struct target_ops* ops, | |
8670 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8671 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8672 | CORE_ADDR *found_addrp) | |
8673 | { | |
5af949e3 | 8674 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8675 | struct remote_state *rs = get_remote_state (); |
8676 | int max_size = get_memory_write_packet_size (); | |
8677 | struct packet_config *packet = | |
8678 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8679 | /* Number of packet bytes used to encode the pattern; |
8680 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8681 | int escaped_pattern_len; |
0df8b418 | 8682 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8683 | int used_pattern_len; |
8684 | int i; | |
8685 | int found; | |
8686 | ULONGEST found_addr; | |
8687 | ||
8688 | /* Don't go to the target if we don't have to. | |
8689 | This is done before checking packet->support to avoid the possibility that | |
8690 | a success for this edge case means the facility works in general. */ | |
8691 | if (pattern_len > search_space_len) | |
8692 | return 0; | |
8693 | if (pattern_len == 0) | |
8694 | { | |
8695 | *found_addrp = start_addr; | |
8696 | return 1; | |
8697 | } | |
8698 | ||
8699 | /* If we already know the packet isn't supported, fall back to the simple | |
8700 | way of searching memory. */ | |
8701 | ||
8702 | if (packet->support == PACKET_DISABLE) | |
8703 | { | |
8704 | /* Target doesn't provided special support, fall back and use the | |
8705 | standard support (copy memory and do the search here). */ | |
8706 | return simple_search_memory (ops, start_addr, search_space_len, | |
8707 | pattern, pattern_len, found_addrp); | |
8708 | } | |
8709 | ||
8710 | /* Insert header. */ | |
8711 | i = snprintf (rs->buf, max_size, | |
8712 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8713 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8714 | phex_nz (search_space_len, sizeof (search_space_len))); |
8715 | max_size -= (i + 1); | |
8716 | ||
8717 | /* Escape as much data as fits into rs->buf. */ | |
8718 | escaped_pattern_len = | |
8719 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8720 | &used_pattern_len, max_size); | |
8721 | ||
8722 | /* Bail if the pattern is too large. */ | |
8723 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8724 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8725 | |
8726 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8727 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8728 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8729 | { | |
8730 | /* The request may not have worked because the command is not | |
8731 | supported. If so, fall back to the simple way. */ | |
8732 | if (packet->support == PACKET_DISABLE) | |
8733 | { | |
8734 | return simple_search_memory (ops, start_addr, search_space_len, | |
8735 | pattern, pattern_len, found_addrp); | |
8736 | } | |
8737 | return -1; | |
8738 | } | |
8739 | ||
8740 | if (rs->buf[0] == '0') | |
8741 | found = 0; | |
8742 | else if (rs->buf[0] == '1') | |
8743 | { | |
8744 | found = 1; | |
8745 | if (rs->buf[1] != ',') | |
10e0fa18 | 8746 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8747 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8748 | *found_addrp = found_addr; | |
8749 | } | |
8750 | else | |
10e0fa18 | 8751 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8752 | |
8753 | return found; | |
8754 | } | |
8755 | ||
96baa820 JM |
8756 | static void |
8757 | remote_rcmd (char *command, | |
d9fcf2fb | 8758 | struct ui_file *outbuf) |
96baa820 | 8759 | { |
d01949b6 | 8760 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8761 | char *p = rs->buf; |
96baa820 JM |
8762 | |
8763 | if (!remote_desc) | |
8a3fe4f8 | 8764 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8765 | |
23860348 | 8766 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8767 | if (command == NULL) |
8768 | command = ""; | |
8769 | ||
23860348 | 8770 | /* The query prefix. */ |
2e9f7625 DJ |
8771 | strcpy (rs->buf, "qRcmd,"); |
8772 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8773 | |
3e43a32a MS |
8774 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8775 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8776 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8777 | |
23860348 | 8778 | /* Encode the actual command. */ |
cfd77fa1 | 8779 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8780 | |
6d820c5c | 8781 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8782 | error (_("Communication problem with target.")); |
96baa820 JM |
8783 | |
8784 | /* get/display the response */ | |
8785 | while (1) | |
8786 | { | |
2e9f7625 DJ |
8787 | char *buf; |
8788 | ||
00bf0b85 | 8789 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8790 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 8791 | rs->buf[0] = '\0'; |
5b37825d PW |
8792 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
8793 | { | |
8794 | /* Timeout. Continue to (try to) read responses. | |
8795 | This is better than stopping with an error, assuming the stub | |
8796 | is still executing the (long) monitor command. | |
8797 | If needed, the user can interrupt gdb using C-c, obtaining | |
8798 | an effect similar to stop on timeout. */ | |
8799 | continue; | |
8800 | } | |
2e9f7625 | 8801 | buf = rs->buf; |
96baa820 | 8802 | if (buf[0] == '\0') |
8a3fe4f8 | 8803 | error (_("Target does not support this command.")); |
96baa820 JM |
8804 | if (buf[0] == 'O' && buf[1] != 'K') |
8805 | { | |
23860348 | 8806 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8807 | continue; |
8808 | } | |
8809 | if (strcmp (buf, "OK") == 0) | |
8810 | break; | |
7be570e7 JM |
8811 | if (strlen (buf) == 3 && buf[0] == 'E' |
8812 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8813 | { | |
8a3fe4f8 | 8814 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8815 | } |
96baa820 JM |
8816 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8817 | { | |
8818 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8819 | |
96baa820 JM |
8820 | fputc_unfiltered (c, outbuf); |
8821 | } | |
8822 | break; | |
8823 | } | |
8824 | } | |
8825 | ||
fd79ecee DJ |
8826 | static VEC(mem_region_s) * |
8827 | remote_memory_map (struct target_ops *ops) | |
8828 | { | |
8829 | VEC(mem_region_s) *result = NULL; | |
8830 | char *text = target_read_stralloc (¤t_target, | |
8831 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8832 | ||
8833 | if (text) | |
8834 | { | |
8835 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8836 | |
fd79ecee DJ |
8837 | result = parse_memory_map (text); |
8838 | do_cleanups (back_to); | |
8839 | } | |
8840 | ||
8841 | return result; | |
8842 | } | |
8843 | ||
c906108c | 8844 | static void |
fba45db2 | 8845 | packet_command (char *args, int from_tty) |
c906108c | 8846 | { |
d01949b6 | 8847 | struct remote_state *rs = get_remote_state (); |
c906108c | 8848 | |
c5aa993b | 8849 | if (!remote_desc) |
8a3fe4f8 | 8850 | error (_("command can only be used with remote target")); |
c906108c | 8851 | |
c5aa993b | 8852 | if (!args) |
8a3fe4f8 | 8853 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8854 | |
8855 | puts_filtered ("sending: "); | |
8856 | print_packet (args); | |
8857 | puts_filtered ("\n"); | |
8858 | putpkt (args); | |
8859 | ||
6d820c5c | 8860 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8861 | puts_filtered ("received: "); |
6d820c5c | 8862 | print_packet (rs->buf); |
c906108c SS |
8863 | puts_filtered ("\n"); |
8864 | } | |
8865 | ||
8866 | #if 0 | |
23860348 | 8867 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8868 | |
a14ed312 | 8869 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8870 | |
a14ed312 | 8871 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8872 | |
a14ed312 | 8873 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8874 | |
a14ed312 | 8875 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8876 | |
23860348 | 8877 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8878 | |
a14ed312 | 8879 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8880 | |
23860348 | 8881 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8882 | |
a14ed312 | 8883 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8884 | |
a14ed312 | 8885 | static void init_remote_threadtests (void); |
c906108c | 8886 | |
23860348 | 8887 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8888 | |
8889 | static void | |
fba45db2 | 8890 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8891 | { |
8892 | int sample_thread = SAMPLE_THREAD; | |
8893 | ||
a3f17187 | 8894 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8895 | set_general_thread (sample_thread); |
c906108c SS |
8896 | } |
8897 | ||
8898 | ||
8899 | static void | |
fba45db2 | 8900 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8901 | { |
8902 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8903 | int pid = ptid_get_pid (inferior_ptid); |
8904 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8905 | |
79d7f229 | 8906 | if (remote_thread_alive (ptid)) |
c906108c SS |
8907 | printf_filtered ("PASS: Thread alive test\n"); |
8908 | else | |
8909 | printf_filtered ("FAIL: Thread alive test\n"); | |
8910 | } | |
8911 | ||
23860348 | 8912 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8913 | |
8914 | void | |
fba45db2 | 8915 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8916 | { |
8917 | char hexid[20]; | |
8918 | ||
23860348 | 8919 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8920 | hexid[16] = 0; |
8921 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8922 | } | |
8923 | ||
8924 | static void | |
fba45db2 | 8925 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8926 | { |
8927 | int startflag = 1; | |
8928 | threadref nextthread; | |
8929 | int done, result_count; | |
8930 | threadref threadlist[3]; | |
8931 | ||
8932 | printf_filtered ("Remote Threadlist test\n"); | |
8933 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8934 | &result_count, &threadlist[0])) | |
8935 | printf_filtered ("FAIL: threadlist test\n"); | |
8936 | else | |
8937 | { | |
8938 | threadref *scan = threadlist; | |
8939 | threadref *limit = scan + result_count; | |
8940 | ||
8941 | while (scan < limit) | |
8942 | output_threadid (" thread ", scan++); | |
8943 | } | |
8944 | } | |
8945 | ||
8946 | void | |
fba45db2 | 8947 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8948 | { |
8949 | output_threadid ("Threadid: ", &info->threadid); | |
8950 | printf_filtered ("Name: %s\n ", info->shortname); | |
8951 | printf_filtered ("State: %s\n", info->display); | |
8952 | printf_filtered ("other: %s\n\n", info->more_display); | |
8953 | } | |
8954 | ||
8955 | int | |
fba45db2 | 8956 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8957 | { |
8958 | int result; | |
8959 | int set; | |
8960 | struct gdb_ext_thread_info threadinfo; | |
8961 | ||
8962 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8963 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8964 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8965 | display_thread_info (&threadinfo); | |
8966 | return result; | |
8967 | } | |
8968 | ||
8969 | static void | |
fba45db2 | 8970 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8971 | { |
8972 | int athread = SAMPLE_THREAD; | |
8973 | threadref thread; | |
8974 | int set; | |
8975 | ||
8976 | int_to_threadref (&thread, athread); | |
8977 | printf_filtered ("Remote Threadinfo test\n"); | |
8978 | if (!get_and_display_threadinfo (&thread)) | |
8979 | printf_filtered ("FAIL cannot get thread info\n"); | |
8980 | } | |
8981 | ||
8982 | static int | |
fba45db2 | 8983 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8984 | { |
8985 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8986 | return get_and_display_threadinfo (ref); | |
8987 | } | |
8988 | ||
8989 | static void | |
fba45db2 | 8990 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8991 | { |
8992 | printf_filtered ("Remote Threadlist update test\n"); | |
8993 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8994 | } | |
8995 | ||
8996 | static void | |
8997 | init_remote_threadtests (void) | |
8998 | { | |
3e43a32a MS |
8999 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9000 | _("Fetch and print the remote list of " | |
9001 | "thread identifiers, one pkt only")); | |
c906108c | 9002 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9003 | _("Fetch and display info about one thread")); |
c906108c | 9004 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9005 | _("Test setting to a different thread")); |
c906108c | 9006 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9007 | _("Iterate through updating all remote thread info")); |
c906108c | 9008 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9009 | _(" Remote thread alive test ")); |
c906108c SS |
9010 | } |
9011 | ||
9012 | #endif /* 0 */ | |
9013 | ||
f3fb8c85 MS |
9014 | /* Convert a thread ID to a string. Returns the string in a static |
9015 | buffer. */ | |
9016 | ||
9017 | static char * | |
117de6a9 | 9018 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9019 | { |
79d7f229 | 9020 | static char buf[64]; |
82f73884 | 9021 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9022 | |
7cee1e54 PA |
9023 | if (ptid_equal (ptid, null_ptid)) |
9024 | return normal_pid_to_str (ptid); | |
9025 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9026 | { |
9027 | /* Printing an inferior target id. */ | |
9028 | ||
9029 | /* When multi-process extensions are off, there's no way in the | |
9030 | remote protocol to know the remote process id, if there's any | |
9031 | at all. There's one exception --- when we're connected with | |
9032 | target extended-remote, and we manually attached to a process | |
9033 | with "attach PID". We don't record anywhere a flag that | |
9034 | allows us to distinguish that case from the case of | |
9035 | connecting with extended-remote and the stub already being | |
9036 | attached to a process, and reporting yes to qAttached, hence | |
9037 | no smart special casing here. */ | |
9038 | if (!remote_multi_process_p (rs)) | |
9039 | { | |
9040 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9041 | return buf; | |
9042 | } | |
9043 | ||
9044 | return normal_pid_to_str (ptid); | |
82f73884 | 9045 | } |
ecd0ada5 | 9046 | else |
79d7f229 | 9047 | { |
ecd0ada5 PA |
9048 | if (ptid_equal (magic_null_ptid, ptid)) |
9049 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9050 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9051 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9052 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9053 | else | |
9054 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9055 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9056 | return buf; |
9057 | } | |
f3fb8c85 MS |
9058 | } |
9059 | ||
38691318 KB |
9060 | /* Get the address of the thread local variable in OBJFILE which is |
9061 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9062 | ||
9063 | static CORE_ADDR | |
117de6a9 PA |
9064 | remote_get_thread_local_address (struct target_ops *ops, |
9065 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9066 | { |
444abaca | 9067 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9068 | { |
9069 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9070 | char *p = rs->buf; |
82f73884 | 9071 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9072 | enum packet_result result; |
38691318 KB |
9073 | |
9074 | strcpy (p, "qGetTLSAddr:"); | |
9075 | p += strlen (p); | |
82f73884 | 9076 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9077 | *p++ = ','; |
9078 | p += hexnumstr (p, offset); | |
9079 | *p++ = ','; | |
9080 | p += hexnumstr (p, lm); | |
9081 | *p++ = '\0'; | |
9082 | ||
6d820c5c DJ |
9083 | putpkt (rs->buf); |
9084 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9085 | result = packet_ok (rs->buf, |
9086 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9087 | if (result == PACKET_OK) |
38691318 KB |
9088 | { |
9089 | ULONGEST result; | |
9090 | ||
6d820c5c | 9091 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9092 | return result; |
9093 | } | |
571dd617 | 9094 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9095 | throw_error (TLS_GENERIC_ERROR, |
9096 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9097 | else |
109c3e39 AC |
9098 | throw_error (TLS_GENERIC_ERROR, |
9099 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9100 | } |
9101 | else | |
109c3e39 AC |
9102 | throw_error (TLS_GENERIC_ERROR, |
9103 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9104 | /* Not reached. */ |
9105 | return 0; | |
9106 | } | |
9107 | ||
711e434b PM |
9108 | /* Provide thread local base, i.e. Thread Information Block address. |
9109 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9110 | ||
70221824 | 9111 | static int |
711e434b PM |
9112 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9113 | { | |
9114 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9115 | { | |
9116 | struct remote_state *rs = get_remote_state (); | |
9117 | char *p = rs->buf; | |
9118 | char *endp = rs->buf + get_remote_packet_size (); | |
9119 | enum packet_result result; | |
9120 | ||
9121 | strcpy (p, "qGetTIBAddr:"); | |
9122 | p += strlen (p); | |
9123 | p = write_ptid (p, endp, ptid); | |
9124 | *p++ = '\0'; | |
9125 | ||
9126 | putpkt (rs->buf); | |
9127 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9128 | result = packet_ok (rs->buf, | |
9129 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9130 | if (result == PACKET_OK) | |
9131 | { | |
9132 | ULONGEST result; | |
9133 | ||
9134 | unpack_varlen_hex (rs->buf, &result); | |
9135 | if (addr) | |
9136 | *addr = (CORE_ADDR) result; | |
9137 | return 1; | |
9138 | } | |
9139 | else if (result == PACKET_UNKNOWN) | |
9140 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9141 | else | |
9142 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9143 | } | |
9144 | else | |
9145 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9146 | /* Not reached. */ | |
9147 | return 0; | |
9148 | } | |
9149 | ||
29709017 DJ |
9150 | /* Support for inferring a target description based on the current |
9151 | architecture and the size of a 'g' packet. While the 'g' packet | |
9152 | can have any size (since optional registers can be left off the | |
9153 | end), some sizes are easily recognizable given knowledge of the | |
9154 | approximate architecture. */ | |
9155 | ||
9156 | struct remote_g_packet_guess | |
9157 | { | |
9158 | int bytes; | |
9159 | const struct target_desc *tdesc; | |
9160 | }; | |
9161 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9162 | DEF_VEC_O(remote_g_packet_guess_s); | |
9163 | ||
9164 | struct remote_g_packet_data | |
9165 | { | |
9166 | VEC(remote_g_packet_guess_s) *guesses; | |
9167 | }; | |
9168 | ||
9169 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9170 | ||
9171 | static void * | |
9172 | remote_g_packet_data_init (struct obstack *obstack) | |
9173 | { | |
9174 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9175 | } | |
9176 | ||
9177 | void | |
9178 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9179 | const struct target_desc *tdesc) | |
9180 | { | |
9181 | struct remote_g_packet_data *data | |
9182 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9183 | struct remote_g_packet_guess new_guess, *guess; | |
9184 | int ix; | |
9185 | ||
9186 | gdb_assert (tdesc != NULL); | |
9187 | ||
9188 | for (ix = 0; | |
9189 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9190 | ix++) | |
9191 | if (guess->bytes == bytes) | |
9192 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9193 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9194 | bytes); |
9195 | ||
9196 | new_guess.bytes = bytes; | |
9197 | new_guess.tdesc = tdesc; | |
9198 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9199 | } | |
9200 | ||
d962ef82 DJ |
9201 | /* Return 1 if remote_read_description would do anything on this target |
9202 | and architecture, 0 otherwise. */ | |
9203 | ||
9204 | static int | |
9205 | remote_read_description_p (struct target_ops *target) | |
9206 | { | |
9207 | struct remote_g_packet_data *data | |
9208 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
9209 | ||
9210 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9211 | return 1; | |
9212 | ||
9213 | return 0; | |
9214 | } | |
9215 | ||
29709017 DJ |
9216 | static const struct target_desc * |
9217 | remote_read_description (struct target_ops *target) | |
9218 | { | |
9219 | struct remote_g_packet_data *data | |
1cf3db46 | 9220 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 9221 | |
d962ef82 DJ |
9222 | /* Do not try this during initial connection, when we do not know |
9223 | whether there is a running but stopped thread. */ | |
9224 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9225 | return NULL; | |
9226 | ||
29709017 DJ |
9227 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9228 | { | |
9229 | struct remote_g_packet_guess *guess; | |
9230 | int ix; | |
9231 | int bytes = send_g_packet (); | |
9232 | ||
9233 | for (ix = 0; | |
9234 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9235 | ix++) | |
9236 | if (guess->bytes == bytes) | |
9237 | return guess->tdesc; | |
9238 | ||
9239 | /* We discard the g packet. A minor optimization would be to | |
9240 | hold on to it, and fill the register cache once we have selected | |
9241 | an architecture, but it's too tricky to do safely. */ | |
9242 | } | |
9243 | ||
9244 | return NULL; | |
9245 | } | |
9246 | ||
a6b151f1 DJ |
9247 | /* Remote file transfer support. This is host-initiated I/O, not |
9248 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9249 | ||
9250 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9251 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9252 | decrease *LEFT. Otherwise raise an error. */ | |
9253 | ||
9254 | static void | |
9255 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9256 | { | |
9257 | int len = strlen (string); | |
9258 | ||
9259 | if (len > *left) | |
9260 | error (_("Packet too long for target.")); | |
9261 | ||
9262 | memcpy (*buffer, string, len); | |
9263 | *buffer += len; | |
9264 | *left -= len; | |
9265 | ||
9266 | /* NUL-terminate the buffer as a convenience, if there is | |
9267 | room. */ | |
9268 | if (*left) | |
9269 | **buffer = '\0'; | |
9270 | } | |
9271 | ||
9272 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9273 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9274 | decrease *LEFT. Otherwise raise an error. */ | |
9275 | ||
9276 | static void | |
9277 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9278 | int len) | |
9279 | { | |
9280 | if (2 * len > *left) | |
9281 | error (_("Packet too long for target.")); | |
9282 | ||
9283 | bin2hex (bytes, *buffer, len); | |
9284 | *buffer += 2 * len; | |
9285 | *left -= 2 * len; | |
9286 | ||
9287 | /* NUL-terminate the buffer as a convenience, if there is | |
9288 | room. */ | |
9289 | if (*left) | |
9290 | **buffer = '\0'; | |
9291 | } | |
9292 | ||
9293 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9294 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9295 | decrease *LEFT. Otherwise raise an error. */ | |
9296 | ||
9297 | static void | |
9298 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9299 | { | |
9300 | int len = hexnumlen (value); | |
9301 | ||
9302 | if (len > *left) | |
9303 | error (_("Packet too long for target.")); | |
9304 | ||
9305 | hexnumstr (*buffer, value); | |
9306 | *buffer += len; | |
9307 | *left -= len; | |
9308 | ||
9309 | /* NUL-terminate the buffer as a convenience, if there is | |
9310 | room. */ | |
9311 | if (*left) | |
9312 | **buffer = '\0'; | |
9313 | } | |
9314 | ||
9315 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9316 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9317 | was included, and *ATTACHMENT to point to the start of the annex | |
9318 | if any. The length of the packet isn't needed here; there may | |
9319 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9320 | ||
9321 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9322 | -1 is returned, the other variables may not be initialized. */ | |
9323 | ||
9324 | static int | |
9325 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9326 | int *remote_errno, char **attachment) | |
9327 | { | |
9328 | char *p, *p2; | |
9329 | ||
9330 | *remote_errno = 0; | |
9331 | *attachment = NULL; | |
9332 | ||
9333 | if (buffer[0] != 'F') | |
9334 | return -1; | |
9335 | ||
9336 | errno = 0; | |
9337 | *retcode = strtol (&buffer[1], &p, 16); | |
9338 | if (errno != 0 || p == &buffer[1]) | |
9339 | return -1; | |
9340 | ||
9341 | /* Check for ",errno". */ | |
9342 | if (*p == ',') | |
9343 | { | |
9344 | errno = 0; | |
9345 | *remote_errno = strtol (p + 1, &p2, 16); | |
9346 | if (errno != 0 || p + 1 == p2) | |
9347 | return -1; | |
9348 | p = p2; | |
9349 | } | |
9350 | ||
9351 | /* Check for ";attachment". If there is no attachment, the | |
9352 | packet should end here. */ | |
9353 | if (*p == ';') | |
9354 | { | |
9355 | *attachment = p + 1; | |
9356 | return 0; | |
9357 | } | |
9358 | else if (*p == '\0') | |
9359 | return 0; | |
9360 | else | |
9361 | return -1; | |
9362 | } | |
9363 | ||
9364 | /* Send a prepared I/O packet to the target and read its response. | |
9365 | The prepared packet is in the global RS->BUF before this function | |
9366 | is called, and the answer is there when we return. | |
9367 | ||
9368 | COMMAND_BYTES is the length of the request to send, which may include | |
9369 | binary data. WHICH_PACKET is the packet configuration to check | |
9370 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9371 | is set to the error number and -1 is returned. Otherwise the value | |
9372 | returned by the function is returned. | |
9373 | ||
9374 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9375 | attachment is expected; an error will be reported if there's a | |
9376 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9377 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9378 | attachment's length. */ | |
9379 | ||
9380 | static int | |
9381 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9382 | int *remote_errno, char **attachment, | |
9383 | int *attachment_len) | |
9384 | { | |
9385 | struct remote_state *rs = get_remote_state (); | |
9386 | int ret, bytes_read; | |
9387 | char *attachment_tmp; | |
9388 | ||
f1838a98 UW |
9389 | if (!remote_desc |
9390 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9391 | { |
9392 | *remote_errno = FILEIO_ENOSYS; | |
9393 | return -1; | |
9394 | } | |
9395 | ||
9396 | putpkt_binary (rs->buf, command_bytes); | |
9397 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9398 | ||
9399 | /* If it timed out, something is wrong. Don't try to parse the | |
9400 | buffer. */ | |
9401 | if (bytes_read < 0) | |
9402 | { | |
9403 | *remote_errno = FILEIO_EINVAL; | |
9404 | return -1; | |
9405 | } | |
9406 | ||
9407 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9408 | { | |
9409 | case PACKET_ERROR: | |
9410 | *remote_errno = FILEIO_EINVAL; | |
9411 | return -1; | |
9412 | case PACKET_UNKNOWN: | |
9413 | *remote_errno = FILEIO_ENOSYS; | |
9414 | return -1; | |
9415 | case PACKET_OK: | |
9416 | break; | |
9417 | } | |
9418 | ||
9419 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9420 | &attachment_tmp)) | |
9421 | { | |
9422 | *remote_errno = FILEIO_EINVAL; | |
9423 | return -1; | |
9424 | } | |
9425 | ||
9426 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9427 | if ((attachment_tmp == NULL && attachment != NULL) | |
9428 | || (attachment_tmp != NULL && attachment == NULL)) | |
9429 | { | |
9430 | *remote_errno = FILEIO_EINVAL; | |
9431 | return -1; | |
9432 | } | |
9433 | ||
9434 | /* If an attachment was found, it must point into the packet buffer; | |
9435 | work out how many bytes there were. */ | |
9436 | if (attachment_tmp != NULL) | |
9437 | { | |
9438 | *attachment = attachment_tmp; | |
9439 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9440 | } | |
9441 | ||
9442 | return ret; | |
9443 | } | |
9444 | ||
9445 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9446 | remote file descriptor, or -1 if an error occurs (and set | |
9447 | *REMOTE_ERRNO). */ | |
9448 | ||
9449 | static int | |
9450 | remote_hostio_open (const char *filename, int flags, int mode, | |
9451 | int *remote_errno) | |
9452 | { | |
9453 | struct remote_state *rs = get_remote_state (); | |
9454 | char *p = rs->buf; | |
9455 | int left = get_remote_packet_size () - 1; | |
9456 | ||
9457 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9458 | ||
9459 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9460 | strlen (filename)); | |
9461 | remote_buffer_add_string (&p, &left, ","); | |
9462 | ||
9463 | remote_buffer_add_int (&p, &left, flags); | |
9464 | remote_buffer_add_string (&p, &left, ","); | |
9465 | ||
9466 | remote_buffer_add_int (&p, &left, mode); | |
9467 | ||
9468 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9469 | remote_errno, NULL, NULL); | |
9470 | } | |
9471 | ||
9472 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9473 | Return the number of bytes written, or -1 if an error occurs (and | |
9474 | set *REMOTE_ERRNO). */ | |
9475 | ||
9476 | static int | |
9477 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9478 | ULONGEST offset, int *remote_errno) | |
9479 | { | |
9480 | struct remote_state *rs = get_remote_state (); | |
9481 | char *p = rs->buf; | |
9482 | int left = get_remote_packet_size (); | |
9483 | int out_len; | |
9484 | ||
9485 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9486 | ||
9487 | remote_buffer_add_int (&p, &left, fd); | |
9488 | remote_buffer_add_string (&p, &left, ","); | |
9489 | ||
9490 | remote_buffer_add_int (&p, &left, offset); | |
9491 | remote_buffer_add_string (&p, &left, ","); | |
9492 | ||
9493 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9494 | get_remote_packet_size () - (p - rs->buf)); | |
9495 | ||
9496 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9497 | remote_errno, NULL, NULL); | |
9498 | } | |
9499 | ||
9500 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9501 | Return the number of bytes read, or -1 if an error occurs (and | |
9502 | set *REMOTE_ERRNO). */ | |
9503 | ||
9504 | static int | |
9505 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9506 | ULONGEST offset, int *remote_errno) | |
9507 | { | |
9508 | struct remote_state *rs = get_remote_state (); | |
9509 | char *p = rs->buf; | |
9510 | char *attachment; | |
9511 | int left = get_remote_packet_size (); | |
9512 | int ret, attachment_len; | |
9513 | int read_len; | |
9514 | ||
9515 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9516 | ||
9517 | remote_buffer_add_int (&p, &left, fd); | |
9518 | remote_buffer_add_string (&p, &left, ","); | |
9519 | ||
9520 | remote_buffer_add_int (&p, &left, len); | |
9521 | remote_buffer_add_string (&p, &left, ","); | |
9522 | ||
9523 | remote_buffer_add_int (&p, &left, offset); | |
9524 | ||
9525 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9526 | remote_errno, &attachment, | |
9527 | &attachment_len); | |
9528 | ||
9529 | if (ret < 0) | |
9530 | return ret; | |
9531 | ||
9532 | read_len = remote_unescape_input (attachment, attachment_len, | |
9533 | read_buf, len); | |
9534 | if (read_len != ret) | |
9535 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9536 | ||
9537 | return ret; | |
9538 | } | |
9539 | ||
9540 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9541 | (and set *REMOTE_ERRNO). */ | |
9542 | ||
9543 | static int | |
9544 | remote_hostio_close (int fd, int *remote_errno) | |
9545 | { | |
9546 | struct remote_state *rs = get_remote_state (); | |
9547 | char *p = rs->buf; | |
9548 | int left = get_remote_packet_size () - 1; | |
9549 | ||
9550 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9551 | ||
9552 | remote_buffer_add_int (&p, &left, fd); | |
9553 | ||
9554 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9555 | remote_errno, NULL, NULL); | |
9556 | } | |
9557 | ||
9558 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9559 | occurs (and set *REMOTE_ERRNO). */ | |
9560 | ||
9561 | static int | |
9562 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9563 | { | |
9564 | struct remote_state *rs = get_remote_state (); | |
9565 | char *p = rs->buf; | |
9566 | int left = get_remote_packet_size () - 1; | |
9567 | ||
9568 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9569 | ||
9570 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9571 | strlen (filename)); | |
9572 | ||
9573 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9574 | remote_errno, NULL, NULL); | |
9575 | } | |
9576 | ||
b9e7b9c3 UW |
9577 | /* Read value of symbolic link FILENAME on the remote target. Return |
9578 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9579 | occurs (and set *REMOTE_ERRNO). */ | |
9580 | ||
9581 | static char * | |
9582 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9583 | { | |
9584 | struct remote_state *rs = get_remote_state (); | |
9585 | char *p = rs->buf; | |
9586 | char *attachment; | |
9587 | int left = get_remote_packet_size (); | |
9588 | int len, attachment_len; | |
9589 | int read_len; | |
9590 | char *ret; | |
9591 | ||
9592 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9593 | ||
9594 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9595 | strlen (filename)); | |
9596 | ||
9597 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9598 | remote_errno, &attachment, | |
9599 | &attachment_len); | |
9600 | ||
9601 | if (len < 0) | |
9602 | return NULL; | |
9603 | ||
9604 | ret = xmalloc (len + 1); | |
9605 | ||
9606 | read_len = remote_unescape_input (attachment, attachment_len, | |
9607 | ret, len); | |
9608 | if (read_len != len) | |
9609 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9610 | ||
9611 | ret[len] = '\0'; | |
9612 | return ret; | |
9613 | } | |
9614 | ||
a6b151f1 DJ |
9615 | static int |
9616 | remote_fileio_errno_to_host (int errnum) | |
9617 | { | |
9618 | switch (errnum) | |
9619 | { | |
9620 | case FILEIO_EPERM: | |
9621 | return EPERM; | |
9622 | case FILEIO_ENOENT: | |
9623 | return ENOENT; | |
9624 | case FILEIO_EINTR: | |
9625 | return EINTR; | |
9626 | case FILEIO_EIO: | |
9627 | return EIO; | |
9628 | case FILEIO_EBADF: | |
9629 | return EBADF; | |
9630 | case FILEIO_EACCES: | |
9631 | return EACCES; | |
9632 | case FILEIO_EFAULT: | |
9633 | return EFAULT; | |
9634 | case FILEIO_EBUSY: | |
9635 | return EBUSY; | |
9636 | case FILEIO_EEXIST: | |
9637 | return EEXIST; | |
9638 | case FILEIO_ENODEV: | |
9639 | return ENODEV; | |
9640 | case FILEIO_ENOTDIR: | |
9641 | return ENOTDIR; | |
9642 | case FILEIO_EISDIR: | |
9643 | return EISDIR; | |
9644 | case FILEIO_EINVAL: | |
9645 | return EINVAL; | |
9646 | case FILEIO_ENFILE: | |
9647 | return ENFILE; | |
9648 | case FILEIO_EMFILE: | |
9649 | return EMFILE; | |
9650 | case FILEIO_EFBIG: | |
9651 | return EFBIG; | |
9652 | case FILEIO_ENOSPC: | |
9653 | return ENOSPC; | |
9654 | case FILEIO_ESPIPE: | |
9655 | return ESPIPE; | |
9656 | case FILEIO_EROFS: | |
9657 | return EROFS; | |
9658 | case FILEIO_ENOSYS: | |
9659 | return ENOSYS; | |
9660 | case FILEIO_ENAMETOOLONG: | |
9661 | return ENAMETOOLONG; | |
9662 | } | |
9663 | return -1; | |
9664 | } | |
9665 | ||
9666 | static char * | |
9667 | remote_hostio_error (int errnum) | |
9668 | { | |
9669 | int host_error = remote_fileio_errno_to_host (errnum); | |
9670 | ||
9671 | if (host_error == -1) | |
9672 | error (_("Unknown remote I/O error %d"), errnum); | |
9673 | else | |
9674 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9675 | } | |
9676 | ||
a6b151f1 DJ |
9677 | static void |
9678 | remote_hostio_close_cleanup (void *opaque) | |
9679 | { | |
9680 | int fd = *(int *) opaque; | |
9681 | int remote_errno; | |
9682 | ||
9683 | remote_hostio_close (fd, &remote_errno); | |
9684 | } | |
9685 | ||
f1838a98 UW |
9686 | |
9687 | static void * | |
9688 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9689 | { | |
9690 | const char *filename = bfd_get_filename (abfd); | |
9691 | int fd, remote_errno; | |
9692 | int *stream; | |
9693 | ||
9694 | gdb_assert (remote_filename_p (filename)); | |
9695 | ||
9696 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9697 | if (fd == -1) | |
9698 | { | |
9699 | errno = remote_fileio_errno_to_host (remote_errno); | |
9700 | bfd_set_error (bfd_error_system_call); | |
9701 | return NULL; | |
9702 | } | |
9703 | ||
9704 | stream = xmalloc (sizeof (int)); | |
9705 | *stream = fd; | |
9706 | return stream; | |
9707 | } | |
9708 | ||
9709 | static int | |
9710 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9711 | { | |
9712 | int fd = *(int *)stream; | |
9713 | int remote_errno; | |
9714 | ||
9715 | xfree (stream); | |
9716 | ||
9717 | /* Ignore errors on close; these may happen if the remote | |
9718 | connection was already torn down. */ | |
9719 | remote_hostio_close (fd, &remote_errno); | |
9720 | ||
9721 | return 1; | |
9722 | } | |
9723 | ||
9724 | static file_ptr | |
9725 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9726 | file_ptr nbytes, file_ptr offset) | |
9727 | { | |
9728 | int fd = *(int *)stream; | |
9729 | int remote_errno; | |
9730 | file_ptr pos, bytes; | |
9731 | ||
9732 | pos = 0; | |
9733 | while (nbytes > pos) | |
9734 | { | |
9735 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9736 | offset + pos, &remote_errno); | |
9737 | if (bytes == 0) | |
9738 | /* Success, but no bytes, means end-of-file. */ | |
9739 | break; | |
9740 | if (bytes == -1) | |
9741 | { | |
9742 | errno = remote_fileio_errno_to_host (remote_errno); | |
9743 | bfd_set_error (bfd_error_system_call); | |
9744 | return -1; | |
9745 | } | |
9746 | ||
9747 | pos += bytes; | |
9748 | } | |
9749 | ||
9750 | return pos; | |
9751 | } | |
9752 | ||
9753 | static int | |
9754 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9755 | { | |
9756 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9757 | sb->st_size = INT_MAX; | |
9758 | return 0; | |
9759 | } | |
9760 | ||
9761 | int | |
9762 | remote_filename_p (const char *filename) | |
9763 | { | |
9764 | return strncmp (filename, "remote:", 7) == 0; | |
9765 | } | |
9766 | ||
9767 | bfd * | |
9768 | remote_bfd_open (const char *remote_file, const char *target) | |
9769 | { | |
9770 | return bfd_openr_iovec (remote_file, target, | |
9771 | remote_bfd_iovec_open, NULL, | |
9772 | remote_bfd_iovec_pread, | |
9773 | remote_bfd_iovec_close, | |
9774 | remote_bfd_iovec_stat); | |
9775 | } | |
9776 | ||
a6b151f1 DJ |
9777 | void |
9778 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9779 | { | |
9780 | struct cleanup *back_to, *close_cleanup; | |
9781 | int retcode, fd, remote_errno, bytes, io_size; | |
9782 | FILE *file; | |
9783 | gdb_byte *buffer; | |
9784 | int bytes_in_buffer; | |
9785 | int saw_eof; | |
9786 | ULONGEST offset; | |
9787 | ||
9788 | if (!remote_desc) | |
9789 | error (_("command can only be used with remote target")); | |
9790 | ||
9791 | file = fopen (local_file, "rb"); | |
9792 | if (file == NULL) | |
9793 | perror_with_name (local_file); | |
7c8a8b04 | 9794 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9795 | |
9796 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9797 | | FILEIO_O_TRUNC), | |
9798 | 0700, &remote_errno); | |
9799 | if (fd == -1) | |
9800 | remote_hostio_error (remote_errno); | |
9801 | ||
9802 | /* Send up to this many bytes at once. They won't all fit in the | |
9803 | remote packet limit, so we'll transfer slightly fewer. */ | |
9804 | io_size = get_remote_packet_size (); | |
9805 | buffer = xmalloc (io_size); | |
9806 | make_cleanup (xfree, buffer); | |
9807 | ||
9808 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9809 | ||
9810 | bytes_in_buffer = 0; | |
9811 | saw_eof = 0; | |
9812 | offset = 0; | |
9813 | while (bytes_in_buffer || !saw_eof) | |
9814 | { | |
9815 | if (!saw_eof) | |
9816 | { | |
3e43a32a MS |
9817 | bytes = fread (buffer + bytes_in_buffer, 1, |
9818 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9819 | file); |
9820 | if (bytes == 0) | |
9821 | { | |
9822 | if (ferror (file)) | |
9823 | error (_("Error reading %s."), local_file); | |
9824 | else | |
9825 | { | |
9826 | /* EOF. Unless there is something still in the | |
9827 | buffer from the last iteration, we are done. */ | |
9828 | saw_eof = 1; | |
9829 | if (bytes_in_buffer == 0) | |
9830 | break; | |
9831 | } | |
9832 | } | |
9833 | } | |
9834 | else | |
9835 | bytes = 0; | |
9836 | ||
9837 | bytes += bytes_in_buffer; | |
9838 | bytes_in_buffer = 0; | |
9839 | ||
3e43a32a MS |
9840 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9841 | offset, &remote_errno); | |
a6b151f1 DJ |
9842 | |
9843 | if (retcode < 0) | |
9844 | remote_hostio_error (remote_errno); | |
9845 | else if (retcode == 0) | |
9846 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9847 | else if (retcode < bytes) | |
9848 | { | |
9849 | /* Short write. Save the rest of the read data for the next | |
9850 | write. */ | |
9851 | bytes_in_buffer = bytes - retcode; | |
9852 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9853 | } | |
9854 | ||
9855 | offset += retcode; | |
9856 | } | |
9857 | ||
9858 | discard_cleanups (close_cleanup); | |
9859 | if (remote_hostio_close (fd, &remote_errno)) | |
9860 | remote_hostio_error (remote_errno); | |
9861 | ||
9862 | if (from_tty) | |
9863 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9864 | do_cleanups (back_to); | |
9865 | } | |
9866 | ||
9867 | void | |
9868 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9869 | { | |
9870 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9871 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9872 | FILE *file; |
9873 | gdb_byte *buffer; | |
9874 | ULONGEST offset; | |
9875 | ||
9876 | if (!remote_desc) | |
9877 | error (_("command can only be used with remote target")); | |
9878 | ||
9879 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9880 | if (fd == -1) | |
9881 | remote_hostio_error (remote_errno); | |
9882 | ||
9883 | file = fopen (local_file, "wb"); | |
9884 | if (file == NULL) | |
9885 | perror_with_name (local_file); | |
7c8a8b04 | 9886 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9887 | |
9888 | /* Send up to this many bytes at once. They won't all fit in the | |
9889 | remote packet limit, so we'll transfer slightly fewer. */ | |
9890 | io_size = get_remote_packet_size (); | |
9891 | buffer = xmalloc (io_size); | |
9892 | make_cleanup (xfree, buffer); | |
9893 | ||
9894 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9895 | ||
9896 | offset = 0; | |
9897 | while (1) | |
9898 | { | |
9899 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9900 | if (bytes == 0) | |
9901 | /* Success, but no bytes, means end-of-file. */ | |
9902 | break; | |
9903 | if (bytes == -1) | |
9904 | remote_hostio_error (remote_errno); | |
9905 | ||
9906 | offset += bytes; | |
9907 | ||
9908 | bytes = fwrite (buffer, 1, bytes, file); | |
9909 | if (bytes == 0) | |
9910 | perror_with_name (local_file); | |
9911 | } | |
9912 | ||
9913 | discard_cleanups (close_cleanup); | |
9914 | if (remote_hostio_close (fd, &remote_errno)) | |
9915 | remote_hostio_error (remote_errno); | |
9916 | ||
9917 | if (from_tty) | |
9918 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9919 | do_cleanups (back_to); | |
9920 | } | |
9921 | ||
9922 | void | |
9923 | remote_file_delete (const char *remote_file, int from_tty) | |
9924 | { | |
9925 | int retcode, remote_errno; | |
9926 | ||
9927 | if (!remote_desc) | |
9928 | error (_("command can only be used with remote target")); | |
9929 | ||
9930 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9931 | if (retcode == -1) | |
9932 | remote_hostio_error (remote_errno); | |
9933 | ||
9934 | if (from_tty) | |
9935 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9936 | } | |
9937 | ||
9938 | static void | |
9939 | remote_put_command (char *args, int from_tty) | |
9940 | { | |
9941 | struct cleanup *back_to; | |
9942 | char **argv; | |
9943 | ||
d1a41061 PP |
9944 | if (args == NULL) |
9945 | error_no_arg (_("file to put")); | |
9946 | ||
9947 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9948 | back_to = make_cleanup_freeargv (argv); |
9949 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9950 | error (_("Invalid parameters to remote put")); | |
9951 | ||
9952 | remote_file_put (argv[0], argv[1], from_tty); | |
9953 | ||
9954 | do_cleanups (back_to); | |
9955 | } | |
9956 | ||
9957 | static void | |
9958 | remote_get_command (char *args, int from_tty) | |
9959 | { | |
9960 | struct cleanup *back_to; | |
9961 | char **argv; | |
9962 | ||
d1a41061 PP |
9963 | if (args == NULL) |
9964 | error_no_arg (_("file to get")); | |
9965 | ||
9966 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9967 | back_to = make_cleanup_freeargv (argv); |
9968 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9969 | error (_("Invalid parameters to remote get")); | |
9970 | ||
9971 | remote_file_get (argv[0], argv[1], from_tty); | |
9972 | ||
9973 | do_cleanups (back_to); | |
9974 | } | |
9975 | ||
9976 | static void | |
9977 | remote_delete_command (char *args, int from_tty) | |
9978 | { | |
9979 | struct cleanup *back_to; | |
9980 | char **argv; | |
9981 | ||
d1a41061 PP |
9982 | if (args == NULL) |
9983 | error_no_arg (_("file to delete")); | |
9984 | ||
9985 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9986 | back_to = make_cleanup_freeargv (argv); |
9987 | if (argv[0] == NULL || argv[1] != NULL) | |
9988 | error (_("Invalid parameters to remote delete")); | |
9989 | ||
9990 | remote_file_delete (argv[0], from_tty); | |
9991 | ||
9992 | do_cleanups (back_to); | |
9993 | } | |
9994 | ||
9995 | static void | |
9996 | remote_command (char *args, int from_tty) | |
9997 | { | |
9998 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9999 | } | |
10000 | ||
b2175913 MS |
10001 | static int |
10002 | remote_can_execute_reverse (void) | |
10003 | { | |
40ab02ce MS |
10004 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10005 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10006 | return 1; | |
10007 | else | |
10008 | return 0; | |
b2175913 MS |
10009 | } |
10010 | ||
74531fed PA |
10011 | static int |
10012 | remote_supports_non_stop (void) | |
10013 | { | |
10014 | return 1; | |
10015 | } | |
10016 | ||
03583c20 UW |
10017 | static int |
10018 | remote_supports_disable_randomization (void) | |
10019 | { | |
10020 | /* Only supported in extended mode. */ | |
10021 | return 0; | |
10022 | } | |
10023 | ||
8a305172 PA |
10024 | static int |
10025 | remote_supports_multi_process (void) | |
10026 | { | |
10027 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10028 | |
901f9912 UW |
10029 | /* Only extended-remote handles being attached to multiple |
10030 | processes, even though plain remote can use the multi-process | |
10031 | thread id extensions, so that GDB knows the target process's | |
10032 | PID. */ | |
10033 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10034 | } |
10035 | ||
70221824 | 10036 | static int |
782b2b07 SS |
10037 | remote_supports_cond_tracepoints (void) |
10038 | { | |
10039 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10040 | |
782b2b07 SS |
10041 | return rs->cond_tracepoints; |
10042 | } | |
10043 | ||
3788aec7 LM |
10044 | static int |
10045 | remote_supports_cond_breakpoints (void) | |
10046 | { | |
10047 | struct remote_state *rs = get_remote_state (); | |
10048 | ||
10049 | return rs->cond_breakpoints; | |
10050 | } | |
10051 | ||
70221824 | 10052 | static int |
7a697b8d SS |
10053 | remote_supports_fast_tracepoints (void) |
10054 | { | |
10055 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10056 | |
7a697b8d SS |
10057 | return rs->fast_tracepoints; |
10058 | } | |
10059 | ||
0fb4aa4b PA |
10060 | static int |
10061 | remote_supports_static_tracepoints (void) | |
10062 | { | |
10063 | struct remote_state *rs = get_remote_state (); | |
10064 | ||
10065 | return rs->static_tracepoints; | |
10066 | } | |
10067 | ||
1e4d1764 YQ |
10068 | static int |
10069 | remote_supports_install_in_trace (void) | |
10070 | { | |
10071 | struct remote_state *rs = get_remote_state (); | |
10072 | ||
10073 | return rs->install_in_trace; | |
10074 | } | |
10075 | ||
d248b706 KY |
10076 | static int |
10077 | remote_supports_enable_disable_tracepoint (void) | |
10078 | { | |
10079 | struct remote_state *rs = get_remote_state (); | |
10080 | ||
10081 | return rs->enable_disable_tracepoints; | |
10082 | } | |
10083 | ||
3065dfb6 SS |
10084 | static int |
10085 | remote_supports_string_tracing (void) | |
10086 | { | |
10087 | struct remote_state *rs = get_remote_state (); | |
10088 | ||
10089 | return rs->string_tracing; | |
10090 | } | |
10091 | ||
35b1e5cc | 10092 | static void |
ad91cd99 | 10093 | remote_trace_init (void) |
35b1e5cc SS |
10094 | { |
10095 | putpkt ("QTinit"); | |
10096 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10097 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10098 | error (_("Target does not support this command.")); |
10099 | } | |
10100 | ||
10101 | static void free_actions_list (char **actions_list); | |
10102 | static void free_actions_list_cleanup_wrapper (void *); | |
10103 | static void | |
10104 | free_actions_list_cleanup_wrapper (void *al) | |
10105 | { | |
10106 | free_actions_list (al); | |
10107 | } | |
10108 | ||
10109 | static void | |
10110 | free_actions_list (char **actions_list) | |
10111 | { | |
10112 | int ndx; | |
10113 | ||
10114 | if (actions_list == 0) | |
10115 | return; | |
10116 | ||
10117 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10118 | xfree (actions_list[ndx]); | |
10119 | ||
10120 | xfree (actions_list); | |
10121 | } | |
10122 | ||
409873ef SS |
10123 | /* Recursive routine to walk through command list including loops, and |
10124 | download packets for each command. */ | |
10125 | ||
10126 | static void | |
10127 | remote_download_command_source (int num, ULONGEST addr, | |
10128 | struct command_line *cmds) | |
10129 | { | |
10130 | struct remote_state *rs = get_remote_state (); | |
10131 | struct command_line *cmd; | |
10132 | ||
10133 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10134 | { | |
0df8b418 | 10135 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10136 | strcpy (rs->buf, "QTDPsrc:"); |
10137 | encode_source_string (num, addr, "cmd", cmd->line, | |
10138 | rs->buf + strlen (rs->buf), | |
10139 | rs->buf_size - strlen (rs->buf)); | |
10140 | putpkt (rs->buf); | |
10141 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10142 | if (strcmp (target_buf, "OK")) | |
10143 | warning (_("Target does not support source download.")); | |
10144 | ||
10145 | if (cmd->control_type == while_control | |
10146 | || cmd->control_type == while_stepping_control) | |
10147 | { | |
10148 | remote_download_command_source (num, addr, *cmd->body_list); | |
10149 | ||
0df8b418 | 10150 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10151 | strcpy (rs->buf, "QTDPsrc:"); |
10152 | encode_source_string (num, addr, "cmd", "end", | |
10153 | rs->buf + strlen (rs->buf), | |
10154 | rs->buf_size - strlen (rs->buf)); | |
10155 | putpkt (rs->buf); | |
10156 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10157 | if (strcmp (target_buf, "OK")) | |
10158 | warning (_("Target does not support source download.")); | |
10159 | } | |
10160 | } | |
10161 | } | |
10162 | ||
35b1e5cc | 10163 | static void |
e8ba3115 | 10164 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10165 | { |
bba74b36 | 10166 | #define BUF_SIZE 2048 |
e8ba3115 | 10167 | |
35b1e5cc | 10168 | CORE_ADDR tpaddr; |
409873ef | 10169 | char addrbuf[40]; |
bba74b36 | 10170 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10171 | char **tdp_actions; |
10172 | char **stepping_actions; | |
10173 | int ndx; | |
10174 | struct cleanup *old_chain = NULL; | |
10175 | struct agent_expr *aexpr; | |
10176 | struct cleanup *aexpr_chain = NULL; | |
10177 | char *pkt; | |
e8ba3115 | 10178 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10179 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10180 | |
e8ba3115 YQ |
10181 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
10182 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
10183 | tdp_actions); | |
10184 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10185 | stepping_actions); | |
10186 | ||
10187 | tpaddr = loc->address; | |
10188 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10189 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10190 | addrbuf, /* address */ | |
10191 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10192 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10193 | /* Fast tracepoints are mostly handled by the target, but we can |
10194 | tell the target how big of an instruction block should be moved | |
10195 | around. */ | |
10196 | if (b->type == bp_fast_tracepoint) | |
10197 | { | |
10198 | /* Only test for support at download time; we may not know | |
10199 | target capabilities at definition time. */ | |
10200 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10201 | { |
e8ba3115 | 10202 | int isize; |
35b1e5cc | 10203 | |
e8ba3115 YQ |
10204 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
10205 | tpaddr, &isize, NULL)) | |
bba74b36 YQ |
10206 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10207 | isize); | |
35b1e5cc | 10208 | else |
e8ba3115 YQ |
10209 | /* If it passed validation at definition but fails now, |
10210 | something is very wrong. */ | |
10211 | internal_error (__FILE__, __LINE__, | |
10212 | _("Fast tracepoint not " | |
10213 | "valid during download")); | |
35b1e5cc | 10214 | } |
e8ba3115 YQ |
10215 | else |
10216 | /* Fast tracepoints are functionally identical to regular | |
10217 | tracepoints, so don't take lack of support as a reason to | |
10218 | give up on the trace run. */ | |
10219 | warning (_("Target does not support fast tracepoints, " | |
10220 | "downloading %d as regular tracepoint"), b->number); | |
10221 | } | |
10222 | else if (b->type == bp_static_tracepoint) | |
10223 | { | |
10224 | /* Only test for support at download time; we may not know | |
10225 | target capabilities at definition time. */ | |
10226 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10227 | { |
e8ba3115 | 10228 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10229 | |
e8ba3115 YQ |
10230 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10231 | strcat (buf, ":S"); | |
0fb4aa4b | 10232 | else |
e8ba3115 | 10233 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10234 | } |
e8ba3115 YQ |
10235 | else |
10236 | /* Fast tracepoints are functionally identical to regular | |
10237 | tracepoints, so don't take lack of support as a reason | |
10238 | to give up on the trace run. */ | |
10239 | error (_("Target does not support static tracepoints")); | |
10240 | } | |
10241 | /* If the tracepoint has a conditional, make it into an agent | |
10242 | expression and append to the definition. */ | |
10243 | if (loc->cond) | |
10244 | { | |
10245 | /* Only test support at download time, we may not know target | |
10246 | capabilities at definition time. */ | |
10247 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10248 | { |
e8ba3115 YQ |
10249 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10250 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10251 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10252 | aexpr->len); | |
e8ba3115 YQ |
10253 | pkt = buf + strlen (buf); |
10254 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10255 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10256 | *pkt = '\0'; | |
10257 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10258 | } |
e8ba3115 YQ |
10259 | else |
10260 | warning (_("Target does not support conditional tracepoints, " | |
10261 | "ignoring tp %d cond"), b->number); | |
10262 | } | |
35b1e5cc | 10263 | |
d9b3f62e | 10264 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10265 | strcat (buf, "-"); |
10266 | putpkt (buf); | |
10267 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10268 | if (strcmp (target_buf, "OK")) | |
10269 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10270 | |
e8ba3115 YQ |
10271 | /* do_single_steps (t); */ |
10272 | if (tdp_actions) | |
10273 | { | |
10274 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10275 | { |
e8ba3115 | 10276 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10277 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10278 | b->number, addrbuf, /* address */ | |
10279 | tdp_actions[ndx], | |
10280 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10281 | ? '-' : 0)); | |
e8ba3115 YQ |
10282 | putpkt (buf); |
10283 | remote_get_noisy_reply (&target_buf, | |
10284 | &target_buf_size); | |
10285 | if (strcmp (target_buf, "OK")) | |
10286 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10287 | } |
e8ba3115 YQ |
10288 | } |
10289 | if (stepping_actions) | |
10290 | { | |
10291 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10292 | { |
e8ba3115 | 10293 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10294 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10295 | b->number, addrbuf, /* address */ | |
10296 | ((ndx == 0) ? "S" : ""), | |
10297 | stepping_actions[ndx], | |
10298 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10299 | putpkt (buf); |
10300 | remote_get_noisy_reply (&target_buf, | |
10301 | &target_buf_size); | |
10302 | if (strcmp (target_buf, "OK")) | |
10303 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10304 | } |
e8ba3115 | 10305 | } |
409873ef | 10306 | |
e8ba3115 YQ |
10307 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10308 | == PACKET_ENABLE) | |
10309 | { | |
10310 | if (b->addr_string) | |
409873ef | 10311 | { |
e8ba3115 YQ |
10312 | strcpy (buf, "QTDPsrc:"); |
10313 | encode_source_string (b->number, loc->address, | |
10314 | "at", b->addr_string, buf + strlen (buf), | |
10315 | 2048 - strlen (buf)); | |
409873ef | 10316 | |
e8ba3115 YQ |
10317 | putpkt (buf); |
10318 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10319 | if (strcmp (target_buf, "OK")) | |
10320 | warning (_("Target does not support source download.")); | |
409873ef | 10321 | } |
e8ba3115 YQ |
10322 | if (b->cond_string) |
10323 | { | |
10324 | strcpy (buf, "QTDPsrc:"); | |
10325 | encode_source_string (b->number, loc->address, | |
10326 | "cond", b->cond_string, buf + strlen (buf), | |
10327 | 2048 - strlen (buf)); | |
10328 | putpkt (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 | remote_download_command_source (b->number, loc->address, | |
10334 | breakpoint_commands (b)); | |
35b1e5cc | 10335 | } |
e8ba3115 YQ |
10336 | |
10337 | do_cleanups (old_chain); | |
35b1e5cc SS |
10338 | } |
10339 | ||
1e4d1764 YQ |
10340 | static int |
10341 | remote_can_download_tracepoint (void) | |
10342 | { | |
1e51243a PA |
10343 | struct remote_state *rs = get_remote_state (); |
10344 | struct trace_status *ts; | |
10345 | int status; | |
10346 | ||
10347 | /* Don't try to install tracepoints until we've relocated our | |
10348 | symbols, and fetched and merged the target's tracepoint list with | |
10349 | ours. */ | |
10350 | if (rs->starting_up) | |
10351 | return 0; | |
10352 | ||
10353 | ts = current_trace_status (); | |
10354 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10355 | |
10356 | if (status == -1 || !ts->running_known || !ts->running) | |
10357 | return 0; | |
10358 | ||
10359 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10360 | installing tracepoint in trace, we have to return. */ | |
10361 | if (!remote_supports_install_in_trace ()) | |
10362 | return 0; | |
10363 | ||
10364 | return 1; | |
10365 | } | |
10366 | ||
10367 | ||
35b1e5cc SS |
10368 | static void |
10369 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10370 | { | |
10371 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10372 | char *p; |
35b1e5cc | 10373 | |
bba74b36 YQ |
10374 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10375 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10376 | tsv->builtin); | |
00bf0b85 SS |
10377 | p = rs->buf + strlen (rs->buf); |
10378 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10379 | error (_("Trace state variable name too long for tsv definition packet")); | |
10380 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10381 | *p++ = '\0'; | |
35b1e5cc SS |
10382 | putpkt (rs->buf); |
10383 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10384 | if (*target_buf == '\0') |
10385 | error (_("Target does not support this command.")); | |
10386 | if (strcmp (target_buf, "OK") != 0) | |
10387 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10388 | } |
10389 | ||
d248b706 KY |
10390 | static void |
10391 | remote_enable_tracepoint (struct bp_location *location) | |
10392 | { | |
10393 | struct remote_state *rs = get_remote_state (); | |
10394 | char addr_buf[40]; | |
10395 | ||
10396 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10397 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10398 | location->owner->number, addr_buf); | |
d248b706 KY |
10399 | putpkt (rs->buf); |
10400 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10401 | if (*rs->buf == '\0') | |
10402 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10403 | if (strcmp (rs->buf, "OK") != 0) | |
10404 | error (_("Error on target while enabling tracepoint.")); | |
10405 | } | |
10406 | ||
10407 | static void | |
10408 | remote_disable_tracepoint (struct bp_location *location) | |
10409 | { | |
10410 | struct remote_state *rs = get_remote_state (); | |
10411 | char addr_buf[40]; | |
10412 | ||
10413 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10414 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10415 | location->owner->number, addr_buf); | |
d248b706 KY |
10416 | putpkt (rs->buf); |
10417 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10418 | if (*rs->buf == '\0') | |
10419 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10420 | if (strcmp (rs->buf, "OK") != 0) | |
10421 | error (_("Error on target while disabling tracepoint.")); | |
10422 | } | |
10423 | ||
35b1e5cc | 10424 | static void |
ad91cd99 | 10425 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10426 | { |
10427 | asection *s; | |
81b9b86e | 10428 | bfd *abfd = NULL; |
35b1e5cc | 10429 | bfd_size_type size; |
608bcef2 | 10430 | bfd_vma vma; |
35b1e5cc | 10431 | int anysecs = 0; |
c2fa21f1 | 10432 | int offset = 0; |
35b1e5cc SS |
10433 | |
10434 | if (!exec_bfd) | |
10435 | return; /* No information to give. */ | |
10436 | ||
10437 | strcpy (target_buf, "QTro"); | |
10438 | for (s = exec_bfd->sections; s; s = s->next) | |
10439 | { | |
10440 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10441 | int sec_length; |
35b1e5cc SS |
10442 | |
10443 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10444 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10445 | (s->flags & SEC_READONLY) == 0) |
10446 | continue; | |
10447 | ||
10448 | anysecs = 1; | |
81b9b86e | 10449 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10450 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10451 | sprintf_vma (tmp1, vma); |
10452 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10453 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10454 | if (offset + sec_length + 1 > target_buf_size) | |
10455 | { | |
864ac8a7 HZ |
10456 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10457 | != PACKET_ENABLE) | |
10458 | warning (_("\ | |
c2fa21f1 HZ |
10459 | Too many sections for read-only sections definition packet.")); |
10460 | break; | |
10461 | } | |
bba74b36 YQ |
10462 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10463 | tmp1, tmp2); | |
c2fa21f1 | 10464 | offset += sec_length; |
35b1e5cc SS |
10465 | } |
10466 | if (anysecs) | |
10467 | { | |
10468 | putpkt (target_buf); | |
10469 | getpkt (&target_buf, &target_buf_size, 0); | |
10470 | } | |
10471 | } | |
10472 | ||
10473 | static void | |
ad91cd99 | 10474 | remote_trace_start (void) |
35b1e5cc SS |
10475 | { |
10476 | putpkt ("QTStart"); | |
10477 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10478 | if (*target_buf == '\0') |
10479 | error (_("Target does not support this command.")); | |
10480 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10481 | error (_("Bogus reply from target: %s"), target_buf); |
10482 | } | |
10483 | ||
10484 | static int | |
00bf0b85 | 10485 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10486 | { |
953b98d1 | 10487 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10488 | char *p = NULL; |
0df8b418 | 10489 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10490 | extern int trace_regblock_size; |
67f41397 | 10491 | volatile struct gdb_exception ex; |
a744cf53 | 10492 | |
00bf0b85 SS |
10493 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10494 | ||
35b1e5cc | 10495 | putpkt ("qTStatus"); |
67f41397 JK |
10496 | |
10497 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10498 | { | |
10499 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10500 | } | |
10501 | if (ex.reason < 0) | |
10502 | { | |
10503 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10504 | return -1; | |
10505 | } | |
00bf0b85 SS |
10506 | |
10507 | /* If the remote target doesn't do tracing, flag it. */ | |
10508 | if (*p == '\0') | |
10509 | return -1; | |
35b1e5cc | 10510 | |
00bf0b85 SS |
10511 | /* We're working with a live target. */ |
10512 | ts->from_file = 0; | |
10513 | ||
10514 | /* Set some defaults. */ | |
10515 | ts->running_known = 0; | |
10516 | ts->stop_reason = trace_stop_reason_unknown; | |
10517 | ts->traceframe_count = -1; | |
10518 | ts->buffer_free = 0; | |
10519 | ||
10520 | if (*p++ != 'T') | |
35b1e5cc SS |
10521 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10522 | ||
00bf0b85 SS |
10523 | parse_trace_status (p, ts); |
10524 | ||
10525 | return ts->running; | |
35b1e5cc SS |
10526 | } |
10527 | ||
70221824 | 10528 | static void |
f196051f SS |
10529 | remote_get_tracepoint_status (struct breakpoint *bp, |
10530 | struct uploaded_tp *utp) | |
10531 | { | |
10532 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10533 | char *reply; |
10534 | struct bp_location *loc; | |
10535 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10536 | size_t size = get_remote_packet_size (); |
f196051f SS |
10537 | |
10538 | if (tp) | |
10539 | { | |
10540 | tp->base.hit_count = 0; | |
10541 | tp->traceframe_usage = 0; | |
10542 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10543 | { | |
10544 | /* If the tracepoint was never downloaded, don't go asking for | |
10545 | any status. */ | |
10546 | if (tp->number_on_target == 0) | |
10547 | continue; | |
bba74b36 YQ |
10548 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10549 | phex_nz (loc->address, 0)); | |
f196051f SS |
10550 | putpkt (rs->buf); |
10551 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10552 | if (reply && *reply) | |
10553 | { | |
10554 | if (*reply == 'V') | |
10555 | parse_tracepoint_status (reply + 1, bp, utp); | |
10556 | } | |
10557 | } | |
10558 | } | |
10559 | else if (utp) | |
10560 | { | |
10561 | utp->hit_count = 0; | |
10562 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10563 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10564 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10565 | putpkt (rs->buf); |
10566 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10567 | if (reply && *reply) | |
10568 | { | |
10569 | if (*reply == 'V') | |
10570 | parse_tracepoint_status (reply + 1, bp, utp); | |
10571 | } | |
10572 | } | |
10573 | } | |
10574 | ||
35b1e5cc | 10575 | static void |
ad91cd99 | 10576 | remote_trace_stop (void) |
35b1e5cc SS |
10577 | { |
10578 | putpkt ("QTStop"); | |
10579 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10580 | if (*target_buf == '\0') |
10581 | error (_("Target does not support this command.")); | |
10582 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10583 | error (_("Bogus reply from target: %s"), target_buf); |
10584 | } | |
10585 | ||
10586 | static int | |
10587 | remote_trace_find (enum trace_find_type type, int num, | |
10588 | ULONGEST addr1, ULONGEST addr2, | |
10589 | int *tpp) | |
10590 | { | |
10591 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10592 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10593 | char *p, *reply; |
10594 | int target_frameno = -1, target_tracept = -1; | |
10595 | ||
e6e4e701 PA |
10596 | /* Lookups other than by absolute frame number depend on the current |
10597 | trace selected, so make sure it is correct on the remote end | |
10598 | first. */ | |
10599 | if (type != tfind_number) | |
10600 | set_remote_traceframe (); | |
10601 | ||
35b1e5cc SS |
10602 | p = rs->buf; |
10603 | strcpy (p, "QTFrame:"); | |
10604 | p = strchr (p, '\0'); | |
10605 | switch (type) | |
10606 | { | |
10607 | case tfind_number: | |
bba74b36 | 10608 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10609 | break; |
10610 | case tfind_pc: | |
bba74b36 | 10611 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10612 | break; |
10613 | case tfind_tp: | |
bba74b36 | 10614 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10615 | break; |
10616 | case tfind_range: | |
bba74b36 YQ |
10617 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10618 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10619 | break; |
10620 | case tfind_outside: | |
bba74b36 YQ |
10621 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10622 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10623 | break; |
10624 | default: | |
9b20d036 | 10625 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10626 | } |
10627 | ||
10628 | putpkt (rs->buf); | |
10629 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10630 | if (*reply == '\0') |
10631 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10632 | |
10633 | while (reply && *reply) | |
10634 | switch (*reply) | |
10635 | { | |
10636 | case 'F': | |
f197e0f1 VP |
10637 | p = ++reply; |
10638 | target_frameno = (int) strtol (p, &reply, 16); | |
10639 | if (reply == p) | |
10640 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10641 | /* Don't update our remote traceframe number cache on failure |
10642 | to select a remote traceframe. */ | |
f197e0f1 VP |
10643 | if (target_frameno == -1) |
10644 | return -1; | |
35b1e5cc SS |
10645 | break; |
10646 | case 'T': | |
f197e0f1 VP |
10647 | p = ++reply; |
10648 | target_tracept = (int) strtol (p, &reply, 16); | |
10649 | if (reply == p) | |
10650 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10651 | break; |
10652 | case 'O': /* "OK"? */ | |
10653 | if (reply[1] == 'K' && reply[2] == '\0') | |
10654 | reply += 2; | |
10655 | else | |
10656 | error (_("Bogus reply from target: %s"), reply); | |
10657 | break; | |
10658 | default: | |
10659 | error (_("Bogus reply from target: %s"), reply); | |
10660 | } | |
10661 | if (tpp) | |
10662 | *tpp = target_tracept; | |
e6e4e701 PA |
10663 | |
10664 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10665 | return target_frameno; |
10666 | } | |
10667 | ||
10668 | static int | |
10669 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10670 | { | |
10671 | struct remote_state *rs = get_remote_state (); | |
10672 | char *reply; | |
10673 | ULONGEST uval; | |
10674 | ||
e6e4e701 PA |
10675 | set_remote_traceframe (); |
10676 | ||
bba74b36 | 10677 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10678 | putpkt (rs->buf); |
10679 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10680 | if (reply && *reply) | |
10681 | { | |
10682 | if (*reply == 'V') | |
10683 | { | |
10684 | unpack_varlen_hex (reply + 1, &uval); | |
10685 | *val = (LONGEST) uval; | |
10686 | return 1; | |
10687 | } | |
10688 | } | |
10689 | return 0; | |
10690 | } | |
10691 | ||
00bf0b85 | 10692 | static int |
011aacb0 | 10693 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10694 | { |
10695 | struct remote_state *rs = get_remote_state (); | |
10696 | char *p, *reply; | |
10697 | ||
10698 | p = rs->buf; | |
10699 | strcpy (p, "QTSave:"); | |
10700 | p += strlen (p); | |
10701 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10702 | error (_("Remote file name too long for trace save packet")); | |
10703 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10704 | *p++ = '\0'; | |
10705 | putpkt (rs->buf); | |
ad91cd99 | 10706 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10707 | if (*reply == '\0') |
ad91cd99 PA |
10708 | error (_("Target does not support this command.")); |
10709 | if (strcmp (reply, "OK") != 0) | |
10710 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10711 | return 0; |
10712 | } | |
10713 | ||
10714 | /* This is basically a memory transfer, but needs to be its own packet | |
10715 | because we don't know how the target actually organizes its trace | |
10716 | memory, plus we want to be able to ask for as much as possible, but | |
10717 | not be unhappy if we don't get as much as we ask for. */ | |
10718 | ||
10719 | static LONGEST | |
10720 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10721 | { | |
10722 | struct remote_state *rs = get_remote_state (); | |
10723 | char *reply; | |
10724 | char *p; | |
10725 | int rslt; | |
10726 | ||
10727 | p = rs->buf; | |
10728 | strcpy (p, "qTBuffer:"); | |
10729 | p += strlen (p); | |
10730 | p += hexnumstr (p, offset); | |
10731 | *p++ = ','; | |
10732 | p += hexnumstr (p, len); | |
10733 | *p++ = '\0'; | |
10734 | ||
10735 | putpkt (rs->buf); | |
10736 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10737 | if (reply && *reply) | |
10738 | { | |
10739 | /* 'l' by itself means we're at the end of the buffer and | |
10740 | there is nothing more to get. */ | |
10741 | if (*reply == 'l') | |
10742 | return 0; | |
10743 | ||
10744 | /* Convert the reply into binary. Limit the number of bytes to | |
10745 | convert according to our passed-in buffer size, rather than | |
10746 | what was returned in the packet; if the target is | |
10747 | unexpectedly generous and gives us a bigger reply than we | |
10748 | asked for, we don't want to crash. */ | |
10749 | rslt = hex2bin (target_buf, buf, len); | |
10750 | return rslt; | |
10751 | } | |
10752 | ||
10753 | /* Something went wrong, flag as an error. */ | |
10754 | return -1; | |
10755 | } | |
10756 | ||
35b1e5cc SS |
10757 | static void |
10758 | remote_set_disconnected_tracing (int val) | |
10759 | { | |
10760 | struct remote_state *rs = get_remote_state (); | |
10761 | ||
33da3f1c SS |
10762 | if (rs->disconnected_tracing) |
10763 | { | |
ad91cd99 PA |
10764 | char *reply; |
10765 | ||
bba74b36 | 10766 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 10767 | putpkt (rs->buf); |
ad91cd99 PA |
10768 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10769 | if (*reply == '\0') | |
33da3f1c | 10770 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10771 | if (strcmp (reply, "OK") != 0) |
10772 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10773 | } |
10774 | else if (val) | |
10775 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10776 | } |
10777 | ||
dc146f7c VP |
10778 | static int |
10779 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10780 | { | |
10781 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10782 | |
dc146f7c VP |
10783 | if (info && info->private) |
10784 | return info->private->core; | |
10785 | return -1; | |
10786 | } | |
10787 | ||
4daf5ac0 SS |
10788 | static void |
10789 | remote_set_circular_trace_buffer (int val) | |
10790 | { | |
10791 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10792 | char *reply; |
4daf5ac0 | 10793 | |
bba74b36 | 10794 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 10795 | putpkt (rs->buf); |
ad91cd99 PA |
10796 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10797 | if (*reply == '\0') | |
4daf5ac0 | 10798 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10799 | if (strcmp (reply, "OK") != 0) |
10800 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10801 | } |
10802 | ||
b3b9301e PA |
10803 | static struct traceframe_info * |
10804 | remote_traceframe_info (void) | |
10805 | { | |
10806 | char *text; | |
10807 | ||
10808 | text = target_read_stralloc (¤t_target, | |
10809 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10810 | if (text != NULL) | |
10811 | { | |
10812 | struct traceframe_info *info; | |
10813 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10814 | ||
10815 | info = parse_traceframe_info (text); | |
10816 | do_cleanups (back_to); | |
10817 | return info; | |
10818 | } | |
10819 | ||
10820 | return NULL; | |
10821 | } | |
10822 | ||
405f8e94 SS |
10823 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10824 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10825 | if the packet is not supported, and 0 if the minimum instruction | |
10826 | length is unknown. */ | |
10827 | ||
10828 | static int | |
10829 | remote_get_min_fast_tracepoint_insn_len (void) | |
10830 | { | |
10831 | struct remote_state *rs = get_remote_state (); | |
10832 | char *reply; | |
10833 | ||
e886a173 PA |
10834 | /* If we're not debugging a process yet, the IPA can't be |
10835 | loaded. */ | |
10836 | if (!target_has_execution) | |
10837 | return 0; | |
10838 | ||
10839 | /* Make sure the remote is pointing at the right process. */ | |
10840 | set_general_process (); | |
10841 | ||
bba74b36 | 10842 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
10843 | putpkt (rs->buf); |
10844 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10845 | if (*reply == '\0') | |
10846 | return -1; | |
10847 | else | |
10848 | { | |
10849 | ULONGEST min_insn_len; | |
10850 | ||
10851 | unpack_varlen_hex (reply, &min_insn_len); | |
10852 | ||
10853 | return (int) min_insn_len; | |
10854 | } | |
10855 | } | |
10856 | ||
f196051f SS |
10857 | static int |
10858 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10859 | { | |
10860 | struct remote_state *rs = get_remote_state (); | |
10861 | char *reply; | |
10862 | char *buf = rs->buf; | |
10863 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10864 | int nbytes; | |
10865 | ||
10866 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10867 | if (user) | |
10868 | { | |
10869 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10870 | nbytes = bin2hex (user, buf, 0); | |
10871 | buf += 2 * nbytes; | |
10872 | *buf++ = ';'; | |
10873 | } | |
10874 | if (notes) | |
10875 | { | |
10876 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10877 | nbytes = bin2hex (notes, buf, 0); | |
10878 | buf += 2 * nbytes; | |
10879 | *buf++ = ';'; | |
10880 | } | |
10881 | if (stop_notes) | |
10882 | { | |
10883 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10884 | nbytes = bin2hex (stop_notes, buf, 0); | |
10885 | buf += 2 * nbytes; | |
10886 | *buf++ = ';'; | |
10887 | } | |
10888 | /* Ensure the buffer is terminated. */ | |
10889 | *buf = '\0'; | |
10890 | ||
10891 | putpkt (rs->buf); | |
10892 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10893 | if (*reply == '\0') | |
10894 | return 0; | |
10895 | ||
10896 | if (strcmp (reply, "OK") != 0) | |
10897 | error (_("Bogus reply from target: %s"), reply); | |
10898 | ||
10899 | return 1; | |
10900 | } | |
10901 | ||
d1feda86 YQ |
10902 | static int |
10903 | remote_use_agent (int use) | |
10904 | { | |
10905 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
10906 | { | |
10907 | struct remote_state *rs = get_remote_state (); | |
10908 | ||
10909 | /* If the stub supports QAgent. */ | |
bba74b36 | 10910 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
10911 | putpkt (rs->buf); |
10912 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10913 | ||
10914 | if (strcmp (rs->buf, "OK") == 0) | |
10915 | { | |
10916 | use_agent = use; | |
10917 | return 1; | |
10918 | } | |
10919 | } | |
10920 | ||
10921 | return 0; | |
10922 | } | |
10923 | ||
10924 | static int | |
10925 | remote_can_use_agent (void) | |
10926 | { | |
10927 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
10928 | } | |
10929 | ||
c906108c | 10930 | static void |
fba45db2 | 10931 | init_remote_ops (void) |
c906108c | 10932 | { |
c5aa993b | 10933 | remote_ops.to_shortname = "remote"; |
c906108c | 10934 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10935 | remote_ops.to_doc = |
c906108c | 10936 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10937 | Specify the serial device it is connected to\n\ |
10938 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10939 | remote_ops.to_open = remote_open; |
10940 | remote_ops.to_close = remote_close; | |
c906108c | 10941 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10942 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10943 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10944 | remote_ops.to_wait = remote_wait; |
10945 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10946 | remote_ops.to_store_registers = remote_store_registers; | |
10947 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10948 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10949 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10950 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10951 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10952 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10953 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
10954 | remote_ops.to_watchpoint_addr_within_range = |
10955 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
10956 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
10957 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10958 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10959 | remote_ops.to_region_ok_for_hw_watchpoint |
10960 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10961 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10962 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10963 | remote_ops.to_kill = remote_kill; |
10964 | remote_ops.to_load = generic_load; | |
c906108c | 10965 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10966 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 10967 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 10968 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10969 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10970 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10971 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10972 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10973 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10974 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10975 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10976 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10977 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10978 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10979 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10980 | remote_ops.to_has_memory = default_child_has_memory; | |
10981 | remote_ops.to_has_stack = default_child_has_stack; | |
10982 | remote_ops.to_has_registers = default_child_has_registers; | |
10983 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10984 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10985 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10986 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10987 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10988 | remote_ops.to_flash_erase = remote_flash_erase; |
10989 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10990 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10991 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10992 | remote_ops.to_can_async_p = remote_can_async_p; |
10993 | remote_ops.to_is_async_p = remote_is_async_p; | |
10994 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10995 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10996 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10997 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10998 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
10999 | remote_ops.to_supports_disable_randomization |
11000 | = remote_supports_disable_randomization; | |
7313baad UW |
11001 | remote_ops.to_fileio_open = remote_hostio_open; |
11002 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11003 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11004 | remote_ops.to_fileio_close = remote_hostio_close; | |
11005 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11006 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11007 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11008 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11009 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
35b1e5cc SS |
11010 | remote_ops.to_trace_init = remote_trace_init; |
11011 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11012 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11013 | remote_ops.to_download_trace_state_variable |
11014 | = remote_download_trace_state_variable; | |
d248b706 KY |
11015 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11016 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11017 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11018 | remote_ops.to_trace_start = remote_trace_start; | |
11019 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11020 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11021 | remote_ops.to_trace_stop = remote_trace_stop; |
11022 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11023 | remote_ops.to_get_trace_state_variable_value |
11024 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11025 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11026 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11027 | remote_ops.to_upload_trace_state_variables |
11028 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11029 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11030 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11031 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11032 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 11033 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11034 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11035 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11036 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11037 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11038 | remote_ops.to_static_tracepoint_marker_at |
11039 | = remote_static_tracepoint_marker_at; | |
11040 | remote_ops.to_static_tracepoint_markers_by_strid | |
11041 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11042 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11043 | remote_ops.to_use_agent = remote_use_agent; |
11044 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
c906108c SS |
11045 | } |
11046 | ||
11047 | /* Set up the extended remote vector by making a copy of the standard | |
11048 | remote vector and adding to it. */ | |
11049 | ||
11050 | static void | |
fba45db2 | 11051 | init_extended_remote_ops (void) |
c906108c SS |
11052 | { |
11053 | extended_remote_ops = remote_ops; | |
11054 | ||
0f71a2f6 | 11055 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11056 | extended_remote_ops.to_longname = |
c906108c | 11057 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11058 | extended_remote_ops.to_doc = |
c906108c | 11059 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11060 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11061 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11062 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11063 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11064 | extended_remote_ops.to_detach = extended_remote_detach; |
11065 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11066 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11067 | extended_remote_ops.to_supports_disable_randomization |
11068 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11069 | } |
11070 | ||
6426a772 JM |
11071 | static int |
11072 | remote_can_async_p (void) | |
11073 | { | |
c6ebd6cf | 11074 | if (!target_async_permitted) |
75c99385 PA |
11075 | /* We only enable async when the user specifically asks for it. */ |
11076 | return 0; | |
11077 | ||
23860348 | 11078 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11079 | return serial_can_async_p (remote_desc); |
6426a772 JM |
11080 | } |
11081 | ||
11082 | static int | |
11083 | remote_is_async_p (void) | |
11084 | { | |
c6ebd6cf | 11085 | if (!target_async_permitted) |
75c99385 PA |
11086 | /* We only enable async when the user specifically asks for it. */ |
11087 | return 0; | |
11088 | ||
23860348 | 11089 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11090 | return serial_is_async_p (remote_desc); |
6426a772 JM |
11091 | } |
11092 | ||
2acceee2 JM |
11093 | /* Pass the SERIAL event on and up to the client. One day this code |
11094 | will be able to delay notifying the client of an event until the | |
23860348 | 11095 | point where an entire packet has been received. */ |
2acceee2 | 11096 | |
2bc416ba | 11097 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 11098 | void *context); |
2acceee2 JM |
11099 | static void *async_client_context; |
11100 | static serial_event_ftype remote_async_serial_handler; | |
11101 | ||
6426a772 | 11102 | static void |
819cc324 | 11103 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11104 | { |
2acceee2 JM |
11105 | /* Don't propogate error information up to the client. Instead let |
11106 | the client find out about the error by querying the target. */ | |
11107 | async_client_callback (INF_REG_EVENT, async_client_context); | |
11108 | } | |
11109 | ||
74531fed PA |
11110 | static void |
11111 | remote_async_inferior_event_handler (gdb_client_data data) | |
11112 | { | |
11113 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11114 | } | |
11115 | ||
11116 | static void | |
11117 | remote_async_get_pending_events_handler (gdb_client_data data) | |
11118 | { | |
11119 | remote_get_pending_stop_replies (); | |
11120 | } | |
11121 | ||
2acceee2 | 11122 | static void |
2bc416ba | 11123 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11124 | void *context), void *context) |
2acceee2 JM |
11125 | { |
11126 | if (callback != NULL) | |
11127 | { | |
2cd58942 | 11128 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
11129 | async_client_callback = callback; |
11130 | async_client_context = context; | |
11131 | } | |
11132 | else | |
2cd58942 | 11133 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
11134 | } |
11135 | ||
5a2468f5 | 11136 | static void |
c2d11a7d | 11137 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11138 | { |
427c3a89 | 11139 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11140 | } |
11141 | ||
d471ea57 AC |
11142 | static void |
11143 | show_remote_cmd (char *args, int from_tty) | |
11144 | { | |
37a105a1 | 11145 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11146 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11147 | struct cleanup *showlist_chain; |
11148 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11149 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11150 | |
11151 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11152 | for (; list != NULL; list = list->next) | |
11153 | if (strcmp (list->name, "Z-packet") == 0) | |
11154 | continue; | |
427c3a89 DJ |
11155 | else if (list->type == not_set_cmd) |
11156 | /* Alias commands are exactly like the original, except they | |
11157 | don't have the normal type. */ | |
11158 | continue; | |
11159 | else | |
37a105a1 DJ |
11160 | { |
11161 | struct cleanup *option_chain | |
11162 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11163 | |
37a105a1 DJ |
11164 | ui_out_field_string (uiout, "name", list->name); |
11165 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
11166 | if (list->type == show_cmd) |
11167 | do_setshow_command ((char *) NULL, from_tty, list); | |
11168 | else | |
11169 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11170 | /* Close the tuple. */ |
11171 | do_cleanups (option_chain); | |
11172 | } | |
427c3a89 DJ |
11173 | |
11174 | /* Close the tuple. */ | |
11175 | do_cleanups (showlist_chain); | |
d471ea57 | 11176 | } |
5a2468f5 | 11177 | |
0f71a2f6 | 11178 | |
23860348 | 11179 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11180 | static void |
11181 | remote_new_objfile (struct objfile *objfile) | |
11182 | { | |
23860348 | 11183 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 11184 | remote_check_symbols (objfile); |
dc8acb97 MS |
11185 | } |
11186 | ||
00bf0b85 SS |
11187 | /* Pull all the tracepoints defined on the target and create local |
11188 | data structures representing them. We don't want to create real | |
11189 | tracepoints yet, we don't want to mess up the user's existing | |
11190 | collection. */ | |
11191 | ||
11192 | static int | |
11193 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11194 | { |
00bf0b85 SS |
11195 | struct remote_state *rs = get_remote_state (); |
11196 | char *p; | |
d5551862 | 11197 | |
00bf0b85 SS |
11198 | /* Ask for a first packet of tracepoint definition. */ |
11199 | putpkt ("qTfP"); | |
11200 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11201 | p = rs->buf; | |
11202 | while (*p && *p != 'l') | |
d5551862 | 11203 | { |
00bf0b85 SS |
11204 | parse_tracepoint_definition (p, utpp); |
11205 | /* Ask for another packet of tracepoint definition. */ | |
11206 | putpkt ("qTsP"); | |
11207 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11208 | p = rs->buf; | |
d5551862 | 11209 | } |
00bf0b85 | 11210 | return 0; |
d5551862 SS |
11211 | } |
11212 | ||
00bf0b85 SS |
11213 | static int |
11214 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11215 | { |
00bf0b85 | 11216 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11217 | char *p; |
d5551862 | 11218 | |
00bf0b85 SS |
11219 | /* Ask for a first packet of variable definition. */ |
11220 | putpkt ("qTfV"); | |
d5551862 SS |
11221 | getpkt (&rs->buf, &rs->buf_size, 0); |
11222 | p = rs->buf; | |
00bf0b85 | 11223 | while (*p && *p != 'l') |
d5551862 | 11224 | { |
00bf0b85 SS |
11225 | parse_tsv_definition (p, utsvp); |
11226 | /* Ask for another packet of variable definition. */ | |
11227 | putpkt ("qTsV"); | |
d5551862 SS |
11228 | getpkt (&rs->buf, &rs->buf_size, 0); |
11229 | p = rs->buf; | |
11230 | } | |
00bf0b85 | 11231 | return 0; |
d5551862 SS |
11232 | } |
11233 | ||
c906108c | 11234 | void |
fba45db2 | 11235 | _initialize_remote (void) |
c906108c | 11236 | { |
ea9c271d | 11237 | struct remote_state *rs; |
9a7071a8 JB |
11238 | struct cmd_list_element *cmd; |
11239 | char *cmd_name; | |
ea9c271d | 11240 | |
0f71a2f6 | 11241 | /* architecture specific data */ |
2bc416ba | 11242 | remote_gdbarch_data_handle = |
23860348 | 11243 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11244 | remote_g_packet_data_handle = |
11245 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11246 | |
ea9c271d DJ |
11247 | /* Initialize the per-target state. At the moment there is only one |
11248 | of these, not one per target. Only one target is active at a | |
11249 | time. The default buffer size is unimportant; it will be expanded | |
11250 | whenever a larger buffer is needed. */ | |
0b83947e | 11251 | rs = get_remote_state_raw (); |
ea9c271d DJ |
11252 | rs->buf_size = 400; |
11253 | rs->buf = xmalloc (rs->buf_size); | |
11254 | ||
c906108c SS |
11255 | init_remote_ops (); |
11256 | add_target (&remote_ops); | |
11257 | ||
11258 | init_extended_remote_ops (); | |
11259 | add_target (&extended_remote_ops); | |
cce74817 | 11260 | |
dc8acb97 | 11261 | /* Hook into new objfile notification. */ |
06d3b283 | 11262 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 11263 | |
b803fb0f DJ |
11264 | /* Set up signal handlers. */ |
11265 | sigint_remote_token = | |
11266 | create_async_signal_handler (async_remote_interrupt, NULL); | |
11267 | sigint_remote_twice_token = | |
6d549500 | 11268 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11269 | |
c906108c SS |
11270 | #if 0 |
11271 | init_remote_threadtests (); | |
11272 | #endif | |
11273 | ||
23860348 | 11274 | /* set/show remote ... */ |
d471ea57 | 11275 | |
1bedd215 | 11276 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11277 | Remote protocol specific variables\n\ |
11278 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11279 | the packets being used"), |
cff3e48b | 11280 | &remote_set_cmdlist, "set remote ", |
23860348 | 11281 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11282 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11283 | Remote protocol specific variables\n\ |
11284 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11285 | the packets being used"), |
cff3e48b | 11286 | &remote_show_cmdlist, "show remote ", |
23860348 | 11287 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11288 | |
1a966eab AC |
11289 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11290 | Compare section data on target to the exec file.\n\ | |
11291 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11292 | &cmdlist); |
11293 | ||
1a966eab AC |
11294 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11295 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11296 | maintenance packet TEXT\n\ |
11297 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11298 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11299 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11300 | terminating `#' character and checksum."), |
c906108c SS |
11301 | &maintenancelist); |
11302 | ||
7915a72c AC |
11303 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11304 | Set whether to send break if interrupted."), _("\ | |
11305 | Show whether to send break if interrupted."), _("\ | |
11306 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11307 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11308 | &setlist, &showlist); |
9a7071a8 JB |
11309 | cmd_name = "remotebreak"; |
11310 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11311 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11312 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11313 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11314 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11315 | ||
11316 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11317 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11318 | _("\ | |
9a7071a8 JB |
11319 | Set interrupt sequence to remote target."), _("\ |
11320 | Show interrupt sequence to remote target."), _("\ | |
11321 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11322 | NULL, show_interrupt_sequence, | |
11323 | &remote_set_cmdlist, | |
11324 | &remote_show_cmdlist); | |
11325 | ||
11326 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11327 | &interrupt_on_connect, _("\ | |
11328 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11329 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11330 | If set, interrupt sequence is sent to remote target."), | |
11331 | NULL, NULL, | |
11332 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11333 | |
23860348 | 11334 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11335 | |
1a966eab AC |
11336 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11337 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11338 | &setlist); |
1a966eab AC |
11339 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11340 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11341 | &showlist); |
11342 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11343 | set_memory_write_packet_size, _("\ |
11344 | Set the maximum number of bytes per memory-write packet.\n\ | |
11345 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11346 | default packet size. The actual limit is further reduced\n\ | |
11347 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11348 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11349 | &remote_set_cmdlist); |
11350 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11351 | set_memory_read_packet_size, _("\ |
11352 | Set the maximum number of bytes per memory-read packet.\n\ | |
11353 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11354 | default packet size. The actual limit is further reduced\n\ | |
11355 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11356 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11357 | &remote_set_cmdlist); |
11358 | add_cmd ("memory-write-packet-size", no_class, | |
11359 | show_memory_write_packet_size, | |
1a966eab | 11360 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11361 | &remote_show_cmdlist); |
11362 | add_cmd ("memory-read-packet-size", no_class, | |
11363 | show_memory_read_packet_size, | |
1a966eab | 11364 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11365 | &remote_show_cmdlist); |
c906108c | 11366 | |
b3f42336 | 11367 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11368 | &remote_hw_watchpoint_limit, _("\ |
11369 | Set the maximum number of target hardware watchpoints."), _("\ | |
11370 | Show the maximum number of target hardware watchpoints."), _("\ | |
11371 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11372 | NULL, NULL, /* FIXME: i18n: The maximum |
11373 | number of target hardware | |
11374 | watchpoints is %s. */ | |
b3f42336 | 11375 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11376 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11377 | &remote_hw_watchpoint_length_limit, _("\ | |
11378 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11379 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11380 | Specify a negative limit for unlimited."), | |
11381 | NULL, NULL, /* FIXME: i18n: The maximum | |
11382 | length (in bytes) of a target | |
11383 | hardware watchpoint is %s. */ | |
11384 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11385 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11386 | &remote_hw_breakpoint_limit, _("\ |
11387 | Set the maximum number of target hardware breakpoints."), _("\ | |
11388 | Show the maximum number of target hardware breakpoints."), _("\ | |
11389 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11390 | NULL, NULL, /* FIXME: i18n: The maximum |
11391 | number of target hardware | |
11392 | breakpoints is %s. */ | |
b3f42336 | 11393 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11394 | |
4d28ad1e AC |
11395 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
11396 | &remote_address_size, _("\ | |
11397 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
11398 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
11399 | NULL, | |
11400 | NULL, /* FIXME: i18n: */ | |
11401 | &setlist, &showlist); | |
c906108c | 11402 | |
444abaca | 11403 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11404 | "X", "binary-download", 1); |
0f71a2f6 | 11405 | |
444abaca | 11406 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11407 | "vCont", "verbose-resume", 0); |
506fb367 | 11408 | |
89be2091 DJ |
11409 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11410 | "QPassSignals", "pass-signals", 0); | |
11411 | ||
9b224c5e PA |
11412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11413 | "QProgramSignals", "program-signals", 0); | |
11414 | ||
444abaca | 11415 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11416 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11417 | |
444abaca | 11418 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11419 | "P", "set-register", 1); |
d471ea57 | 11420 | |
444abaca | 11421 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11422 | "p", "fetch-register", 1); |
b96ec7ac | 11423 | |
444abaca | 11424 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11425 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11426 | |
444abaca | 11427 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11428 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11429 | |
444abaca | 11430 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11431 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11432 | |
444abaca | 11433 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11434 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11435 | |
444abaca | 11436 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11437 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11438 | |
0876f84a DJ |
11439 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11440 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11441 | |
23181151 DJ |
11442 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11443 | "qXfer:features:read", "target-features", 0); | |
11444 | ||
cfa9d6d9 DJ |
11445 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11446 | "qXfer:libraries:read", "library-info", 0); | |
11447 | ||
2268b414 JK |
11448 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11449 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11450 | ||
fd79ecee DJ |
11451 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11452 | "qXfer:memory-map:read", "memory-map", 0); | |
11453 | ||
0e7f50da UW |
11454 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11455 | "qXfer:spu:read", "read-spu-object", 0); | |
11456 | ||
11457 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11458 | "qXfer:spu:write", "write-spu-object", 0); | |
11459 | ||
07e059b5 VP |
11460 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11461 | "qXfer:osdata:read", "osdata", 0); | |
11462 | ||
dc146f7c VP |
11463 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11464 | "qXfer:threads:read", "threads", 0); | |
11465 | ||
4aa995e1 PA |
11466 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11467 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11468 | ||
11469 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11470 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11471 | ||
b3b9301e PA |
11472 | add_packet_config_cmd |
11473 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11474 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11475 | ||
169081d0 TG |
11476 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11477 | "qXfer:uib:read", "unwind-info-block", 0); | |
11478 | ||
444abaca | 11479 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11480 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11481 | 0); |
11482 | ||
711e434b PM |
11483 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11484 | "qGetTIBAddr", "get-thread-information-block-address", | |
11485 | 0); | |
11486 | ||
40ab02ce MS |
11487 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11488 | "bc", "reverse-continue", 0); | |
11489 | ||
11490 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11491 | "bs", "reverse-step", 0); | |
11492 | ||
be2a5f71 DJ |
11493 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11494 | "qSupported", "supported-packets", 0); | |
11495 | ||
08388c79 DE |
11496 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11497 | "qSearch:memory", "search-memory", 0); | |
11498 | ||
a6b151f1 DJ |
11499 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11500 | "vFile:open", "hostio-open", 0); | |
11501 | ||
11502 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11503 | "vFile:pread", "hostio-pread", 0); | |
11504 | ||
11505 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11506 | "vFile:pwrite", "hostio-pwrite", 0); | |
11507 | ||
11508 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11509 | "vFile:close", "hostio-close", 0); | |
11510 | ||
11511 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11512 | "vFile:unlink", "hostio-unlink", 0); | |
11513 | ||
b9e7b9c3 UW |
11514 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11515 | "vFile:readlink", "hostio-readlink", 0); | |
11516 | ||
2d717e4f DJ |
11517 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11518 | "vAttach", "attach", 0); | |
11519 | ||
11520 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11521 | "vRun", "run", 0); | |
11522 | ||
a6f3e723 SL |
11523 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11524 | "QStartNoAckMode", "noack", 0); | |
11525 | ||
82f73884 PA |
11526 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11527 | "vKill", "kill", 0); | |
11528 | ||
0b16c5cf PA |
11529 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11530 | "qAttached", "query-attached", 0); | |
11531 | ||
782b2b07 | 11532 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11533 | "ConditionalTracepoints", |
11534 | "conditional-tracepoints", 0); | |
3788aec7 LM |
11535 | |
11536 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
11537 | "ConditionalBreakpoints", | |
11538 | "conditional-breakpoints", 0); | |
11539 | ||
7a697b8d SS |
11540 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11541 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11542 | |
409873ef SS |
11543 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11544 | "TracepointSource", "TracepointSource", 0); | |
11545 | ||
d914c394 SS |
11546 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11547 | "QAllow", "allow", 0); | |
11548 | ||
0fb4aa4b PA |
11549 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11550 | "StaticTracepoints", "static-tracepoints", 0); | |
11551 | ||
1e4d1764 YQ |
11552 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11553 | "InstallInTrace", "install-in-trace", 0); | |
11554 | ||
0fb4aa4b PA |
11555 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11556 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11557 | ||
78d85199 YQ |
11558 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11559 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11560 | ||
03583c20 UW |
11561 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11562 | "QDisableRandomization", "disable-randomization", 0); | |
11563 | ||
d1feda86 YQ |
11564 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
11565 | "QAgent", "agent", 0); | |
11566 | ||
37a105a1 DJ |
11567 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11568 | Z sub-packet has its own set and show commands, but users may | |
11569 | have sets to this variable in their .gdbinit files (or in their | |
11570 | documentation). */ | |
e9e68a56 | 11571 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11572 | &remote_Z_packet_detect, _("\ |
11573 | Set use of remote protocol `Z' packets"), _("\ | |
11574 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11575 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11576 | packets."), |
e9e68a56 | 11577 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11578 | show_remote_protocol_Z_packet_cmd, |
11579 | /* FIXME: i18n: Use of remote protocol | |
11580 | `Z' packets is %s. */ | |
e9e68a56 | 11581 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11582 | |
a6b151f1 DJ |
11583 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11584 | Manipulate files on the remote system\n\ | |
11585 | Transfer files to and from the remote target system."), | |
11586 | &remote_cmdlist, "remote ", | |
11587 | 0 /* allow-unknown */, &cmdlist); | |
11588 | ||
11589 | add_cmd ("put", class_files, remote_put_command, | |
11590 | _("Copy a local file to the remote system."), | |
11591 | &remote_cmdlist); | |
11592 | ||
11593 | add_cmd ("get", class_files, remote_get_command, | |
11594 | _("Copy a remote file to the local system."), | |
11595 | &remote_cmdlist); | |
11596 | ||
11597 | add_cmd ("delete", class_files, remote_delete_command, | |
11598 | _("Delete a remote file."), | |
11599 | &remote_cmdlist); | |
11600 | ||
2d717e4f DJ |
11601 | remote_exec_file = xstrdup (""); |
11602 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11603 | &remote_exec_file, _("\ | |
11604 | Set the remote pathname for \"run\""), _("\ | |
11605 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11606 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11607 | ||
449092f6 CV |
11608 | /* Eventually initialize fileio. See fileio.c */ |
11609 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11610 | |
11611 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11612 | special ptids with it set to != 0. */ | |
82f73884 PA |
11613 | magic_null_ptid = ptid_build (42000, 1, -1); |
11614 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11615 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11616 | |
11617 | target_buf_size = 2048; | |
11618 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11619 | } |
10760264 | 11620 |