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" |
a4453b7e | 45 | #include "gdb_bfd.h" |
c906108c | 46 | |
7a292a7a | 47 | #include <ctype.h> |
9846de1b | 48 | #include <sys/time.h> |
c906108c | 49 | |
43ff13b4 | 50 | #include "event-loop.h" |
c2c6d25f | 51 | #include "event-top.h" |
2acceee2 | 52 | #include "inf-loop.h" |
43ff13b4 | 53 | |
c906108c SS |
54 | #include <signal.h> |
55 | #include "serial.h" | |
56 | ||
6240bebf MS |
57 | #include "gdbcore.h" /* for exec_bfd */ |
58 | ||
449092f6 | 59 | #include "remote-fileio.h" |
a6b151f1 | 60 | #include "gdb/fileio.h" |
3e88cf8d | 61 | #include "gdb_stat.h" |
dc146f7c | 62 | #include "xml-support.h" |
449092f6 | 63 | |
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
35b1e5cc SS |
66 | #include "tracepoint.h" |
67 | #include "ax.h" | |
68 | #include "ax-gdb.h" | |
d1feda86 | 69 | #include "agent.h" |
35b1e5cc | 70 | |
0df8b418 | 71 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
72 | static char *target_buf; |
73 | static long target_buf_size; | |
35b1e5cc | 74 | |
6765f3e5 DJ |
75 | /* The size to align memory write packets, when practical. The protocol |
76 | does not guarantee any alignment, and gdb will generate short | |
77 | writes and unaligned writes, but even as a best-effort attempt this | |
78 | can improve bulk transfers. For instance, if a write is misaligned | |
79 | relative to the target's data bus, the stub may need to make an extra | |
80 | round trip fetching data from the target. This doesn't make a | |
81 | huge difference, but it's easy to do, so we try to be helpful. | |
82 | ||
83 | The alignment chosen is arbitrary; usually data bus width is | |
84 | important here, not the possibly larger cache line size. */ | |
85 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
86 | ||
23860348 | 87 | /* Prototypes for local functions. */ |
6426a772 JM |
88 | static void cleanup_sigint_signal_handler (void *dummy); |
89 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 90 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
91 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
92 | int forever); | |
6426a772 | 93 | |
a14ed312 KB |
94 | static void handle_remote_sigint (int); |
95 | static void handle_remote_sigint_twice (int); | |
96 | static void async_remote_interrupt (gdb_client_data); | |
97 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 98 | |
a14ed312 | 99 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 100 | |
316f2060 | 101 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 102 | |
a14ed312 | 103 | static void remote_open (char *name, int from_tty); |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 106 | |
75c99385 | 107 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 108 | |
a14ed312 | 109 | static void remote_close (int quitting); |
c906108c | 110 | |
136d6dae | 111 | static void remote_mourn (struct target_ops *ops); |
c906108c | 112 | |
a14ed312 | 113 | static void extended_remote_restart (void); |
c906108c | 114 | |
136d6dae | 115 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 116 | |
a14ed312 | 117 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
7d85a9c0 | 123 | static void remote_kill (struct target_ops *ops); |
c906108c | 124 | |
a14ed312 | 125 | static int tohex (int nib); |
c906108c | 126 | |
75c99385 PA |
127 | static int remote_can_async_p (void); |
128 | ||
129 | static int remote_is_async_p (void); | |
130 | ||
131 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
132 | void *context), void *context); | |
133 | ||
136d6dae | 134 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_interrupt (int signo); |
c906108c | 137 | |
a14ed312 | 138 | static void remote_interrupt_twice (int signo); |
7a292a7a | 139 | |
a14ed312 | 140 | static void interrupt_query (void); |
c906108c | 141 | |
79d7f229 PA |
142 | static void set_general_thread (struct ptid ptid); |
143 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 144 | |
a14ed312 | 145 | static void get_offsets (void); |
c906108c | 146 | |
6d820c5c DJ |
147 | static void skip_frame (void); |
148 | ||
149 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
94cc34af | 157 | static void remote_stop (ptid_t); |
c906108c | 158 | |
a14ed312 | 159 | static int ishex (int ch, int *val); |
c906108c | 160 | |
a14ed312 | 161 | static int stubhex (int ch); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumstr (char *, ULONGEST); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 166 | |
a14ed312 | 167 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 168 | |
a14ed312 | 169 | static void print_packet (char *); |
c906108c | 170 | |
a14ed312 | 171 | static void compare_sections_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void packet_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 176 | |
39f77062 | 177 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 178 | |
a14ed312 | 179 | static void remote_find_new_threads (void); |
c906108c | 180 | |
79d7f229 | 181 | static void record_currthread (ptid_t currthread); |
c906108c | 182 | |
30559e10 | 183 | static int fromhex (int a); |
c906108c | 184 | |
00bf0b85 | 185 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 186 | |
00bf0b85 | 187 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 188 | |
a14ed312 | 189 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 190 | |
a14ed312 | 191 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 192 | |
5a2468f5 | 193 | struct packet_config; |
5a2468f5 | 194 | |
a14ed312 | 195 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 196 | |
d471ea57 | 197 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 198 | |
bb572ddd DJ |
199 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
200 | struct cmd_list_element *c); | |
201 | ||
202 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
203 | int from_tty, | |
204 | struct cmd_list_element *c, | |
205 | const char *value); | |
206 | ||
82f73884 PA |
207 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
208 | static ptid_t read_ptid (char *buf, char **obuf); | |
209 | ||
d914c394 SS |
210 | static void remote_set_permissions (void); |
211 | ||
d5551862 | 212 | struct remote_state; |
00bf0b85 | 213 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 214 | |
00bf0b85 SS |
215 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
216 | ||
217 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
218 | ||
c8d104ad PA |
219 | static void remote_query_supported (void); |
220 | ||
221 | static void remote_check_symbols (struct objfile *objfile); | |
222 | ||
a14ed312 | 223 | void _initialize_remote (void); |
c906108c | 224 | |
74531fed PA |
225 | struct stop_reply; |
226 | static struct stop_reply *stop_reply_xmalloc (void); | |
227 | static void stop_reply_xfree (struct stop_reply *); | |
228 | static void do_stop_reply_xfree (void *arg); | |
229 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
230 | static void push_stop_reply (struct stop_reply *); | |
231 | static void remote_get_pending_stop_replies (void); | |
232 | static void discard_pending_stop_replies (int pid); | |
233 | static int peek_stop_reply (ptid_t ptid); | |
234 | ||
235 | static void remote_async_inferior_event_handler (gdb_client_data); | |
236 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
237 | ||
d3fd5342 PA |
238 | static void remote_terminal_ours (void); |
239 | ||
d962ef82 DJ |
240 | static int remote_read_description_p (struct target_ops *target); |
241 | ||
176a6961 | 242 | static void remote_console_output (char *msg); |
dde08ee1 | 243 | |
b775012e LM |
244 | static int remote_supports_cond_breakpoints (void); |
245 | ||
d3ce09f5 SS |
246 | static int remote_can_run_breakpoint_commands (void); |
247 | ||
74531fed PA |
248 | /* The non-stop remote protocol provisions for one pending stop reply. |
249 | This is where we keep it until it is acknowledged. */ | |
250 | ||
251 | static struct stop_reply *pending_stop_reply = NULL; | |
252 | ||
a6b151f1 DJ |
253 | /* For "remote". */ |
254 | ||
255 | static struct cmd_list_element *remote_cmdlist; | |
256 | ||
bb572ddd DJ |
257 | /* For "set remote" and "show remote". */ |
258 | ||
259 | static struct cmd_list_element *remote_set_cmdlist; | |
260 | static struct cmd_list_element *remote_show_cmdlist; | |
261 | ||
ea9c271d DJ |
262 | /* Description of the remote protocol state for the currently |
263 | connected target. This is per-target state, and independent of the | |
264 | selected architecture. */ | |
265 | ||
266 | struct remote_state | |
267 | { | |
268 | /* A buffer to use for incoming packets, and its current size. The | |
269 | buffer is grown dynamically for larger incoming packets. | |
270 | Outgoing packets may also be constructed in this buffer. | |
271 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
272 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
273 | packets. */ | |
274 | char *buf; | |
275 | long buf_size; | |
be2a5f71 | 276 | |
1e51243a PA |
277 | /* True if we're going through initial connection setup (finding out |
278 | about the remote side's threads, relocating symbols, etc.). */ | |
279 | int starting_up; | |
280 | ||
be2a5f71 DJ |
281 | /* If we negotiated packet size explicitly (and thus can bypass |
282 | heuristics for the largest packet size that will not overflow | |
283 | a buffer in the stub), this will be set to that packet size. | |
284 | Otherwise zero, meaning to use the guessed size. */ | |
285 | long explicit_packet_size; | |
2d717e4f DJ |
286 | |
287 | /* remote_wait is normally called when the target is running and | |
288 | waits for a stop reply packet. But sometimes we need to call it | |
289 | when the target is already stopped. We can send a "?" packet | |
290 | and have remote_wait read the response. Or, if we already have | |
291 | the response, we can stash it in BUF and tell remote_wait to | |
292 | skip calling getpkt. This flag is set when BUF contains a | |
293 | stop reply packet and the target is not waiting. */ | |
294 | int cached_wait_status; | |
a6f3e723 SL |
295 | |
296 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
297 | expect acks from each other. The connection is assumed to be | |
298 | reliable. */ | |
299 | int noack_mode; | |
82f73884 PA |
300 | |
301 | /* True if we're connected in extended remote mode. */ | |
302 | int extended; | |
303 | ||
304 | /* True if the stub reported support for multi-process | |
305 | extensions. */ | |
306 | int multi_process_aware; | |
e24a49d8 PA |
307 | |
308 | /* True if we resumed the target and we're waiting for the target to | |
309 | stop. In the mean time, we can't start another command/query. | |
310 | The remote server wouldn't be ready to process it, so we'd | |
311 | timeout waiting for a reply that would never come and eventually | |
312 | we'd close the connection. This can happen in asynchronous mode | |
313 | because we allow GDB commands while the target is running. */ | |
314 | int waiting_for_stop_reply; | |
74531fed PA |
315 | |
316 | /* True if the stub reports support for non-stop mode. */ | |
317 | int non_stop_aware; | |
318 | ||
319 | /* True if the stub reports support for vCont;t. */ | |
320 | int support_vCont_t; | |
782b2b07 SS |
321 | |
322 | /* True if the stub reports support for conditional tracepoints. */ | |
323 | int cond_tracepoints; | |
3a29589a | 324 | |
3788aec7 LM |
325 | /* True if the stub reports support for target-side breakpoint |
326 | conditions. */ | |
327 | int cond_breakpoints; | |
328 | ||
d3ce09f5 SS |
329 | /* True if the stub reports support for target-side breakpoint |
330 | commands. */ | |
331 | int breakpoint_commands; | |
332 | ||
7a697b8d SS |
333 | /* True if the stub reports support for fast tracepoints. */ |
334 | int fast_tracepoints; | |
335 | ||
0fb4aa4b PA |
336 | /* True if the stub reports support for static tracepoints. */ |
337 | int static_tracepoints; | |
338 | ||
1e4d1764 YQ |
339 | /* True if the stub reports support for installing tracepoint while |
340 | tracing. */ | |
341 | int install_in_trace; | |
342 | ||
d5551862 SS |
343 | /* True if the stub can continue running a trace while GDB is |
344 | disconnected. */ | |
345 | int disconnected_tracing; | |
346 | ||
d248b706 KY |
347 | /* True if the stub reports support for enabling and disabling |
348 | tracepoints while a trace experiment is running. */ | |
349 | int enable_disable_tracepoints; | |
350 | ||
3065dfb6 SS |
351 | /* True if the stub can collect strings using tracenz bytecode. */ |
352 | int string_tracing; | |
353 | ||
3a29589a DJ |
354 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
355 | responded to that. */ | |
356 | int ctrlc_pending_p; | |
ea9c271d DJ |
357 | }; |
358 | ||
dc146f7c VP |
359 | /* Private data that we'll store in (struct thread_info)->private. */ |
360 | struct private_thread_info | |
361 | { | |
362 | char *extra; | |
363 | int core; | |
364 | }; | |
365 | ||
366 | static void | |
367 | free_private_thread_info (struct private_thread_info *info) | |
368 | { | |
369 | xfree (info->extra); | |
370 | xfree (info); | |
371 | } | |
372 | ||
82f73884 PA |
373 | /* Returns true if the multi-process extensions are in effect. */ |
374 | static int | |
375 | remote_multi_process_p (struct remote_state *rs) | |
376 | { | |
901f9912 | 377 | return rs->multi_process_aware; |
82f73884 PA |
378 | } |
379 | ||
ea9c271d DJ |
380 | /* This data could be associated with a target, but we do not always |
381 | have access to the current target when we need it, so for now it is | |
382 | static. This will be fine for as long as only one target is in use | |
383 | at a time. */ | |
384 | static struct remote_state remote_state; | |
385 | ||
386 | static struct remote_state * | |
0b83947e | 387 | get_remote_state_raw (void) |
ea9c271d DJ |
388 | { |
389 | return &remote_state; | |
390 | } | |
391 | ||
392 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 393 | |
ad10f812 AC |
394 | struct packet_reg |
395 | { | |
396 | long offset; /* Offset into G packet. */ | |
397 | long regnum; /* GDB's internal register number. */ | |
398 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 399 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 400 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 401 | at present. */ |
1cf3db46 | 402 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 403 | at present. */ |
ad10f812 AC |
404 | }; |
405 | ||
ea9c271d | 406 | struct remote_arch_state |
d01949b6 | 407 | { |
ad10f812 AC |
408 | /* Description of the remote protocol registers. */ |
409 | long sizeof_g_packet; | |
b323314b AC |
410 | |
411 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 412 | (making an array gdbarch_num_regs in size). */ |
b323314b | 413 | struct packet_reg *regs; |
ad10f812 | 414 | |
d01949b6 AC |
415 | /* This is the size (in chars) of the first response to the ``g'' |
416 | packet. It is used as a heuristic when determining the maximum | |
417 | size of memory-read and memory-write packets. A target will | |
418 | typically only reserve a buffer large enough to hold the ``g'' | |
419 | packet. The size does not include packet overhead (headers and | |
23860348 | 420 | trailers). */ |
d01949b6 AC |
421 | long actual_register_packet_size; |
422 | ||
423 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 424 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
425 | long remote_packet_size; |
426 | }; | |
427 | ||
35b1e5cc SS |
428 | long sizeof_pkt = 2000; |
429 | ||
430 | /* Utility: generate error from an incoming stub packet. */ | |
431 | static void | |
432 | trace_error (char *buf) | |
433 | { | |
434 | if (*buf++ != 'E') | |
435 | return; /* not an error msg */ | |
436 | switch (*buf) | |
437 | { | |
438 | case '1': /* malformed packet error */ | |
439 | if (*++buf == '0') /* general case: */ | |
440 | error (_("remote.c: error in outgoing packet.")); | |
441 | else | |
442 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
443 | strtol (buf, NULL, 16)); | |
444 | case '2': | |
445 | error (_("trace API error 0x%s."), ++buf); | |
446 | default: | |
447 | error (_("Target returns error code '%s'."), buf); | |
448 | } | |
449 | } | |
450 | ||
451 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
452 | static char * | |
453 | remote_get_noisy_reply (char **buf_p, | |
454 | long *sizeof_buf) | |
455 | { | |
456 | do /* Loop on reply from remote stub. */ | |
457 | { | |
458 | char *buf; | |
a744cf53 | 459 | |
0df8b418 | 460 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
461 | getpkt (buf_p, sizeof_buf, 0); |
462 | buf = *buf_p; | |
ad91cd99 | 463 | if (buf[0] == 'E') |
35b1e5cc | 464 | trace_error (buf); |
dde08ee1 PA |
465 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
466 | { | |
467 | ULONGEST ul; | |
468 | CORE_ADDR from, to, org_to; | |
469 | char *p, *pp; | |
470 | int adjusted_size = 0; | |
471 | volatile struct gdb_exception ex; | |
472 | ||
473 | p = buf + strlen ("qRelocInsn:"); | |
474 | pp = unpack_varlen_hex (p, &ul); | |
475 | if (*pp != ';') | |
cb91c06a | 476 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
477 | from = ul; |
478 | ||
479 | p = pp + 1; | |
a9cbf802 | 480 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
481 | to = ul; |
482 | ||
483 | org_to = to; | |
484 | ||
485 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
486 | { | |
487 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
488 | } | |
489 | if (ex.reason >= 0) | |
490 | { | |
491 | adjusted_size = to - org_to; | |
492 | ||
bba74b36 | 493 | xsnprintf (buf, *sizeof_buf, "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
494 | putpkt (buf); |
495 | } | |
496 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
497 | { | |
498 | /* Propagate memory errors silently back to the target. | |
499 | The stub may have limited the range of addresses we | |
500 | can write to, for example. */ | |
501 | putpkt ("E01"); | |
502 | } | |
503 | else | |
504 | { | |
505 | /* Something unexpectedly bad happened. Be verbose so | |
506 | we can tell what, and propagate the error back to the | |
507 | stub, so it doesn't get stuck waiting for a | |
508 | response. */ | |
509 | exception_fprintf (gdb_stderr, ex, | |
510 | _("warning: relocating instruction: ")); | |
511 | putpkt ("E01"); | |
512 | } | |
513 | } | |
ad91cd99 | 514 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
515 | remote_console_output (buf + 1); /* 'O' message from stub */ |
516 | else | |
0df8b418 | 517 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
518 | } |
519 | while (1); | |
520 | } | |
3c3bea1c | 521 | |
d01949b6 AC |
522 | /* Handle for retreving the remote protocol data from gdbarch. */ |
523 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
524 | ||
ea9c271d DJ |
525 | static struct remote_arch_state * |
526 | get_remote_arch_state (void) | |
d01949b6 | 527 | { |
1cf3db46 | 528 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
529 | } |
530 | ||
0b83947e DJ |
531 | /* Fetch the global remote target state. */ |
532 | ||
533 | static struct remote_state * | |
534 | get_remote_state (void) | |
535 | { | |
536 | /* Make sure that the remote architecture state has been | |
537 | initialized, because doing so might reallocate rs->buf. Any | |
538 | function which calls getpkt also needs to be mindful of changes | |
539 | to rs->buf, but this call limits the number of places which run | |
540 | into trouble. */ | |
541 | get_remote_arch_state (); | |
542 | ||
543 | return get_remote_state_raw (); | |
544 | } | |
545 | ||
74ca34ce DJ |
546 | static int |
547 | compare_pnums (const void *lhs_, const void *rhs_) | |
548 | { | |
549 | const struct packet_reg * const *lhs = lhs_; | |
550 | const struct packet_reg * const *rhs = rhs_; | |
551 | ||
552 | if ((*lhs)->pnum < (*rhs)->pnum) | |
553 | return -1; | |
554 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
555 | return 0; | |
556 | else | |
557 | return 1; | |
558 | } | |
559 | ||
c21236dc PA |
560 | static int |
561 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 562 | { |
74ca34ce | 563 | int regnum, num_remote_regs, offset; |
74ca34ce | 564 | struct packet_reg **remote_regs; |
ea9c271d | 565 | |
4a22f64d | 566 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 567 | { |
c21236dc | 568 | struct packet_reg *r = ®s[regnum]; |
baef701f | 569 | |
4a22f64d | 570 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
571 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
572 | r->pnum = -1; | |
573 | else | |
574 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
575 | ||
b323314b | 576 | r->regnum = regnum; |
74ca34ce DJ |
577 | } |
578 | ||
579 | /* Define the g/G packet format as the contents of each register | |
580 | with a remote protocol number, in order of ascending protocol | |
581 | number. */ | |
582 | ||
4a22f64d | 583 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 584 | * sizeof (struct packet_reg *)); |
f57d151a | 585 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 586 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 587 | regnum++) |
c21236dc PA |
588 | if (regs[regnum].pnum != -1) |
589 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 590 | |
74ca34ce DJ |
591 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
592 | compare_pnums); | |
593 | ||
594 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
595 | { | |
596 | remote_regs[regnum]->in_g_packet = 1; | |
597 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 598 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
599 | } |
600 | ||
c21236dc PA |
601 | return offset; |
602 | } | |
603 | ||
604 | /* Given the architecture described by GDBARCH, return the remote | |
605 | protocol register's number and the register's offset in the g/G | |
606 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
607 | If the target does not have a mapping for REGNUM, return false, | |
608 | otherwise, return true. */ | |
609 | ||
610 | int | |
611 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
612 | int *pnum, int *poffset) | |
613 | { | |
614 | int sizeof_g_packet; | |
615 | struct packet_reg *regs; | |
616 | struct cleanup *old_chain; | |
617 | ||
618 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
619 | ||
620 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
621 | old_chain = make_cleanup (xfree, regs); | |
622 | ||
623 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
624 | ||
625 | *pnum = regs[regnum].pnum; | |
626 | *poffset = regs[regnum].offset; | |
627 | ||
628 | do_cleanups (old_chain); | |
629 | ||
630 | return *pnum != -1; | |
631 | } | |
632 | ||
633 | static void * | |
634 | init_remote_state (struct gdbarch *gdbarch) | |
635 | { | |
636 | struct remote_state *rs = get_remote_state_raw (); | |
637 | struct remote_arch_state *rsa; | |
638 | ||
639 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
640 | ||
641 | /* Use the architecture to build a regnum<->pnum table, which will be | |
642 | 1:1 unless a feature set specifies otherwise. */ | |
643 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
644 | gdbarch_num_regs (gdbarch), | |
645 | struct packet_reg); | |
646 | ||
74ca34ce DJ |
647 | /* Record the maximum possible size of the g packet - it may turn out |
648 | to be smaller. */ | |
c21236dc | 649 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 650 | |
0df8b418 | 651 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
652 | remote stubs have a hardwired buffer size of 400 bytes |
653 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
654 | as the maximum packet-size to ensure that the packet and an extra | |
655 | NUL character can always fit in the buffer. This stops GDB | |
656 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
657 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
658 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 659 | |
ea9c271d DJ |
660 | /* This one is filled in when a ``g'' packet is received. */ |
661 | rsa->actual_register_packet_size = 0; | |
662 | ||
663 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
664 | default, adjust the size accordingly. Remember that each byte is |
665 | encoded as two characters. 32 is the overhead for the packet | |
666 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 667 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 668 | little. */ |
ea9c271d DJ |
669 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
670 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 671 | |
ea9c271d DJ |
672 | /* Make sure that the packet buffer is plenty big enough for |
673 | this architecture. */ | |
674 | if (rs->buf_size < rsa->remote_packet_size) | |
675 | { | |
676 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 677 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 678 | } |
6d820c5c | 679 | |
ea9c271d DJ |
680 | return rsa; |
681 | } | |
682 | ||
683 | /* Return the current allowed size of a remote packet. This is | |
684 | inferred from the current architecture, and should be used to | |
685 | limit the length of outgoing packets. */ | |
686 | static long | |
687 | get_remote_packet_size (void) | |
688 | { | |
be2a5f71 | 689 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
690 | struct remote_arch_state *rsa = get_remote_arch_state (); |
691 | ||
be2a5f71 DJ |
692 | if (rs->explicit_packet_size) |
693 | return rs->explicit_packet_size; | |
694 | ||
ea9c271d | 695 | return rsa->remote_packet_size; |
d01949b6 AC |
696 | } |
697 | ||
ad10f812 | 698 | static struct packet_reg * |
ea9c271d | 699 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 700 | { |
1cf3db46 | 701 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
702 | return NULL; |
703 | else | |
ad10f812 | 704 | { |
ea9c271d | 705 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 706 | |
b323314b AC |
707 | gdb_assert (r->regnum == regnum); |
708 | return r; | |
ad10f812 | 709 | } |
ad10f812 AC |
710 | } |
711 | ||
712 | static struct packet_reg * | |
ea9c271d | 713 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 714 | { |
b323314b | 715 | int i; |
a744cf53 | 716 | |
1cf3db46 | 717 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 718 | { |
ea9c271d | 719 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 720 | |
b323314b AC |
721 | if (r->pnum == pnum) |
722 | return r; | |
ad10f812 AC |
723 | } |
724 | return NULL; | |
d01949b6 AC |
725 | } |
726 | ||
3c3bea1c GS |
727 | /* FIXME: graces/2002-08-08: These variables should eventually be |
728 | bound to an instance of the target object (as in gdbarch-tdep()), | |
729 | when such a thing exists. */ | |
730 | ||
731 | /* This is set to the data address of the access causing the target | |
732 | to stop for a watchpoint. */ | |
733 | static CORE_ADDR remote_watch_data_address; | |
734 | ||
94e08568 | 735 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
736 | static int remote_stopped_by_watchpoint_p; |
737 | ||
c906108c SS |
738 | static struct target_ops remote_ops; |
739 | ||
740 | static struct target_ops extended_remote_ops; | |
741 | ||
6426a772 JM |
742 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
743 | ``forever'' still use the normal timeout mechanism. This is | |
744 | currently used by the ASYNC code to guarentee that target reads | |
745 | during the initial connect always time-out. Once getpkt has been | |
746 | modified to return a timeout indication and, in turn | |
747 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 748 | this can go away. */ |
6426a772 JM |
749 | static int wait_forever_enabled_p = 1; |
750 | ||
9a7071a8 JB |
751 | /* Allow the user to specify what sequence to send to the remote |
752 | when he requests a program interruption: Although ^C is usually | |
753 | what remote systems expect (this is the default, here), it is | |
754 | sometimes preferable to send a break. On other systems such | |
755 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
756 | is required in order to interrupt the execution. */ | |
757 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
758 | const char interrupt_sequence_break[] = "BREAK"; | |
759 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 760 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
761 | { |
762 | interrupt_sequence_control_c, | |
763 | interrupt_sequence_break, | |
764 | interrupt_sequence_break_g, | |
765 | NULL | |
766 | }; | |
767 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
768 | ||
769 | static void | |
770 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
771 | struct cmd_list_element *c, | |
772 | const char *value) | |
773 | { | |
774 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
775 | fprintf_filtered (file, | |
776 | _("Send the ASCII ETX character (Ctrl-c) " | |
777 | "to the remote target to interrupt the " | |
778 | "execution of the program.\n")); | |
779 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
780 | fprintf_filtered (file, | |
781 | _("send a break signal to the remote target " | |
782 | "to interrupt the execution of the program.\n")); | |
783 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
784 | fprintf_filtered (file, | |
785 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
786 | "the remote target to interrupt the execution " | |
787 | "of Linux kernel.\n")); | |
788 | else | |
789 | internal_error (__FILE__, __LINE__, | |
790 | _("Invalid value for interrupt_sequence_mode: %s."), | |
791 | interrupt_sequence_mode); | |
792 | } | |
6426a772 | 793 | |
9a7071a8 JB |
794 | /* This boolean variable specifies whether interrupt_sequence is sent |
795 | to the remote target when gdb connects to it. | |
796 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
797 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
798 | static int interrupt_on_connect = 0; | |
c906108c | 799 | |
9a7071a8 JB |
800 | /* This variable is used to implement the "set/show remotebreak" commands. |
801 | Since these commands are now deprecated in favor of "set/show remote | |
802 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
803 | static int remote_break; |
804 | ||
9a7071a8 JB |
805 | static void |
806 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
807 | { | |
808 | if (remote_break) | |
809 | interrupt_sequence_mode = interrupt_sequence_break; | |
810 | else | |
811 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
812 | } | |
813 | ||
814 | static void | |
815 | show_remotebreak (struct ui_file *file, int from_tty, | |
816 | struct cmd_list_element *c, | |
817 | const char *value) | |
818 | { | |
819 | } | |
820 | ||
c906108c SS |
821 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
822 | remote_open knows that we don't have a file open when the program | |
823 | starts. */ | |
819cc324 | 824 | static struct serial *remote_desc = NULL; |
c906108c | 825 | |
c906108c SS |
826 | /* This variable sets the number of bits in an address that are to be |
827 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 828 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
829 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
830 | initial implementation of remote.c restricted the address sent in | |
831 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
832 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
833 | address was never sent. Since fixing this bug may cause a break in | |
834 | some remote targets this variable is principly provided to | |
23860348 | 835 | facilitate backward compatibility. */ |
c906108c | 836 | |
883b9c6c | 837 | static unsigned int remote_address_size; |
c906108c | 838 | |
75c99385 PA |
839 | /* Temporary to track who currently owns the terminal. See |
840 | remote_terminal_* for more details. */ | |
6426a772 JM |
841 | |
842 | static int remote_async_terminal_ours_p; | |
843 | ||
2d717e4f DJ |
844 | /* The executable file to use for "run" on the remote side. */ |
845 | ||
846 | static char *remote_exec_file = ""; | |
847 | ||
11cf8741 | 848 | \f |
11cf8741 | 849 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
850 | memory read/write packet. MIN (rsa->remote_packet_size, |
851 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 852 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
853 | (speed up transfers). The variables ``preferred_*'' (the user |
854 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 855 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
856 | |
857 | struct memory_packet_config | |
858 | { | |
859 | char *name; | |
860 | long size; | |
861 | int fixed_p; | |
862 | }; | |
863 | ||
864 | /* Compute the current size of a read/write packet. Since this makes | |
865 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
866 | ||
867 | static long | |
868 | get_memory_packet_size (struct memory_packet_config *config) | |
869 | { | |
d01949b6 | 870 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
871 | struct remote_arch_state *rsa = get_remote_arch_state (); |
872 | ||
11cf8741 JM |
873 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
874 | law?) that some hosts don't cope very well with large alloca() | |
875 | calls. Eventually the alloca() code will be replaced by calls to | |
876 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 877 | be lifted or removed. */ |
11cf8741 JM |
878 | #ifndef MAX_REMOTE_PACKET_SIZE |
879 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
880 | #endif | |
3de11b2e | 881 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 882 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 883 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
884 | #endif |
885 | long what_they_get; | |
886 | if (config->fixed_p) | |
887 | { | |
888 | if (config->size <= 0) | |
889 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
890 | else | |
891 | what_they_get = config->size; | |
892 | } | |
893 | else | |
894 | { | |
ea9c271d | 895 | what_they_get = get_remote_packet_size (); |
23860348 | 896 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
897 | if (config->size > 0 |
898 | && what_they_get > config->size) | |
899 | what_they_get = config->size; | |
be2a5f71 DJ |
900 | |
901 | /* Limit it to the size of the targets ``g'' response unless we have | |
902 | permission from the stub to use a larger packet size. */ | |
903 | if (rs->explicit_packet_size == 0 | |
904 | && rsa->actual_register_packet_size > 0 | |
905 | && what_they_get > rsa->actual_register_packet_size) | |
906 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
907 | } |
908 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
909 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
910 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
911 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
912 | |
913 | /* Make sure there is room in the global buffer for this packet | |
914 | (including its trailing NUL byte). */ | |
915 | if (rs->buf_size < what_they_get + 1) | |
916 | { | |
917 | rs->buf_size = 2 * what_they_get; | |
918 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
919 | } | |
920 | ||
11cf8741 JM |
921 | return what_they_get; |
922 | } | |
923 | ||
0df8b418 | 924 | /* Update the size of a read/write packet. If they user wants |
23860348 | 925 | something really big then do a sanity check. */ |
11cf8741 JM |
926 | |
927 | static void | |
928 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
929 | { | |
930 | int fixed_p = config->fixed_p; | |
931 | long size = config->size; | |
a744cf53 | 932 | |
11cf8741 | 933 | if (args == NULL) |
8a3fe4f8 | 934 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
935 | else if (strcmp (args, "hard") == 0 |
936 | || strcmp (args, "fixed") == 0) | |
937 | fixed_p = 1; | |
938 | else if (strcmp (args, "soft") == 0 | |
939 | || strcmp (args, "limit") == 0) | |
940 | fixed_p = 0; | |
941 | else | |
942 | { | |
943 | char *end; | |
a744cf53 | 944 | |
11cf8741 JM |
945 | size = strtoul (args, &end, 0); |
946 | if (args == end) | |
8a3fe4f8 | 947 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
948 | #if 0 |
949 | /* Instead of explicitly capping the size of a packet to | |
950 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
951 | instead allowed to set the size to something arbitrarily | |
23860348 | 952 | large. */ |
11cf8741 | 953 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 954 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
955 | #endif |
956 | } | |
23860348 | 957 | /* Extra checks? */ |
11cf8741 JM |
958 | if (fixed_p && !config->fixed_p) |
959 | { | |
e2e0b3e5 AC |
960 | if (! query (_("The target may not be able to correctly handle a %s\n" |
961 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 962 | config->name, size)) |
8a3fe4f8 | 963 | error (_("Packet size not changed.")); |
11cf8741 | 964 | } |
23860348 | 965 | /* Update the config. */ |
11cf8741 JM |
966 | config->fixed_p = fixed_p; |
967 | config->size = size; | |
968 | } | |
969 | ||
970 | static void | |
971 | show_memory_packet_size (struct memory_packet_config *config) | |
972 | { | |
a3f17187 | 973 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 974 | if (config->fixed_p) |
a3f17187 | 975 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
976 | get_memory_packet_size (config)); |
977 | else | |
a3f17187 | 978 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
979 | get_memory_packet_size (config)); |
980 | } | |
981 | ||
982 | static struct memory_packet_config memory_write_packet_config = | |
983 | { | |
984 | "memory-write-packet-size", | |
985 | }; | |
986 | ||
987 | static void | |
988 | set_memory_write_packet_size (char *args, int from_tty) | |
989 | { | |
990 | set_memory_packet_size (args, &memory_write_packet_config); | |
991 | } | |
992 | ||
993 | static void | |
994 | show_memory_write_packet_size (char *args, int from_tty) | |
995 | { | |
996 | show_memory_packet_size (&memory_write_packet_config); | |
997 | } | |
998 | ||
999 | static long | |
1000 | get_memory_write_packet_size (void) | |
1001 | { | |
1002 | return get_memory_packet_size (&memory_write_packet_config); | |
1003 | } | |
1004 | ||
1005 | static struct memory_packet_config memory_read_packet_config = | |
1006 | { | |
1007 | "memory-read-packet-size", | |
1008 | }; | |
1009 | ||
1010 | static void | |
1011 | set_memory_read_packet_size (char *args, int from_tty) | |
1012 | { | |
1013 | set_memory_packet_size (args, &memory_read_packet_config); | |
1014 | } | |
1015 | ||
1016 | static void | |
1017 | show_memory_read_packet_size (char *args, int from_tty) | |
1018 | { | |
1019 | show_memory_packet_size (&memory_read_packet_config); | |
1020 | } | |
1021 | ||
1022 | static long | |
1023 | get_memory_read_packet_size (void) | |
1024 | { | |
1025 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1026 | |
11cf8741 JM |
1027 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1028 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1029 | increased beyond this. */ |
1030 | if (size > get_remote_packet_size ()) | |
1031 | size = get_remote_packet_size (); | |
11cf8741 JM |
1032 | return size; |
1033 | } | |
1034 | ||
11cf8741 | 1035 | \f |
5a2468f5 | 1036 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1037 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1038 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1039 | |
1040 | enum packet_support | |
1041 | { | |
1042 | PACKET_SUPPORT_UNKNOWN = 0, | |
1043 | PACKET_ENABLE, | |
1044 | PACKET_DISABLE | |
1045 | }; | |
1046 | ||
5a2468f5 JM |
1047 | struct packet_config |
1048 | { | |
bb572ddd DJ |
1049 | const char *name; |
1050 | const char *title; | |
7f19b9a2 | 1051 | enum auto_boolean detect; |
5a2468f5 JM |
1052 | enum packet_support support; |
1053 | }; | |
1054 | ||
d471ea57 | 1055 | /* Analyze a packet's return value and update the packet config |
23860348 | 1056 | accordingly. */ |
d471ea57 AC |
1057 | |
1058 | enum packet_result | |
1059 | { | |
1060 | PACKET_ERROR, | |
1061 | PACKET_OK, | |
1062 | PACKET_UNKNOWN | |
1063 | }; | |
1064 | ||
5a2468f5 | 1065 | static void |
d471ea57 | 1066 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1067 | { |
d471ea57 AC |
1068 | switch (config->detect) |
1069 | { | |
7f19b9a2 | 1070 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1071 | config->support = PACKET_ENABLE; |
1072 | break; | |
7f19b9a2 | 1073 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1074 | config->support = PACKET_DISABLE; |
1075 | break; | |
7f19b9a2 | 1076 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1077 | config->support = PACKET_SUPPORT_UNKNOWN; |
1078 | break; | |
1079 | } | |
5a2468f5 JM |
1080 | } |
1081 | ||
1082 | static void | |
fba45db2 | 1083 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1084 | { |
1085 | char *support = "internal-error"; | |
a744cf53 | 1086 | |
5a2468f5 JM |
1087 | switch (config->support) |
1088 | { | |
1089 | case PACKET_ENABLE: | |
1090 | support = "enabled"; | |
1091 | break; | |
1092 | case PACKET_DISABLE: | |
1093 | support = "disabled"; | |
1094 | break; | |
1095 | case PACKET_SUPPORT_UNKNOWN: | |
1096 | support = "unknown"; | |
1097 | break; | |
1098 | } | |
1099 | switch (config->detect) | |
1100 | { | |
7f19b9a2 | 1101 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1102 | printf_filtered (_("Support for the `%s' packet " |
1103 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1104 | config->name, support); |
5a2468f5 | 1105 | break; |
7f19b9a2 AC |
1106 | case AUTO_BOOLEAN_TRUE: |
1107 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1108 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1109 | config->name, support); | |
8e248173 | 1110 | break; |
5a2468f5 JM |
1111 | } |
1112 | } | |
1113 | ||
1114 | static void | |
bb572ddd DJ |
1115 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1116 | const char *title, int legacy) | |
d471ea57 | 1117 | { |
5a2468f5 JM |
1118 | char *set_doc; |
1119 | char *show_doc; | |
d471ea57 | 1120 | char *cmd_name; |
3ed07be4 | 1121 | |
5a2468f5 JM |
1122 | config->name = name; |
1123 | config->title = title; | |
7f19b9a2 | 1124 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1125 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1126 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1127 | name, title); | |
3e43a32a MS |
1128 | show_doc = xstrprintf ("Show current use of remote " |
1129 | "protocol `%s' (%s) packet", | |
b435e160 | 1130 | name, title); |
d471ea57 | 1131 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1132 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1133 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1134 | &config->detect, set_doc, |
1135 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1136 | set_remote_protocol_packet_cmd, |
1137 | show_remote_protocol_packet_cmd, | |
1138 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1139 | /* The command code copies the documentation strings. */ |
1140 | xfree (set_doc); | |
1141 | xfree (show_doc); | |
23860348 | 1142 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1143 | if (legacy) |
1144 | { | |
1145 | char *legacy_name; | |
a744cf53 | 1146 | |
b435e160 | 1147 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1148 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1149 | &remote_set_cmdlist); |
d471ea57 | 1150 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1151 | &remote_show_cmdlist); |
d471ea57 | 1152 | } |
5a2468f5 JM |
1153 | } |
1154 | ||
d471ea57 | 1155 | static enum packet_result |
a76d924d | 1156 | packet_check_result (const char *buf) |
5a2468f5 | 1157 | { |
d471ea57 | 1158 | if (buf[0] != '\0') |
5a2468f5 | 1159 | { |
d471ea57 | 1160 | /* The stub recognized the packet request. Check that the |
23860348 | 1161 | operation succeeded. */ |
a76d924d DJ |
1162 | if (buf[0] == 'E' |
1163 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1164 | && buf[3] == '\0') | |
1165 | /* "Enn" - definitly an error. */ | |
1166 | return PACKET_ERROR; | |
1167 | ||
1168 | /* Always treat "E." as an error. This will be used for | |
1169 | more verbose error messages, such as E.memtypes. */ | |
1170 | if (buf[0] == 'E' && buf[1] == '.') | |
1171 | return PACKET_ERROR; | |
1172 | ||
1173 | /* The packet may or may not be OK. Just assume it is. */ | |
1174 | return PACKET_OK; | |
1175 | } | |
1176 | else | |
1177 | /* The stub does not support the packet. */ | |
1178 | return PACKET_UNKNOWN; | |
1179 | } | |
1180 | ||
1181 | static enum packet_result | |
1182 | packet_ok (const char *buf, struct packet_config *config) | |
1183 | { | |
1184 | enum packet_result result; | |
1185 | ||
1186 | result = packet_check_result (buf); | |
1187 | switch (result) | |
1188 | { | |
1189 | case PACKET_OK: | |
1190 | case PACKET_ERROR: | |
1191 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1192 | switch (config->support) |
1193 | { | |
1194 | case PACKET_SUPPORT_UNKNOWN: | |
1195 | if (remote_debug) | |
1196 | fprintf_unfiltered (gdb_stdlog, | |
1197 | "Packet %s (%s) is supported\n", | |
1198 | config->name, config->title); | |
1199 | config->support = PACKET_ENABLE; | |
1200 | break; | |
1201 | case PACKET_DISABLE: | |
8e65ff28 | 1202 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1203 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1204 | break; |
1205 | case PACKET_ENABLE: | |
1206 | break; | |
1207 | } | |
a76d924d DJ |
1208 | break; |
1209 | case PACKET_UNKNOWN: | |
23860348 | 1210 | /* The stub does not support the packet. */ |
d471ea57 AC |
1211 | switch (config->support) |
1212 | { | |
1213 | case PACKET_ENABLE: | |
7f19b9a2 | 1214 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1215 | /* If the stub previously indicated that the packet was |
23860348 | 1216 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1217 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1218 | config->name, config->title); |
1219 | else | |
23860348 | 1220 | /* The user set it wrong. */ |
8a3fe4f8 | 1221 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1222 | config->name, config->title); |
1223 | break; | |
1224 | case PACKET_SUPPORT_UNKNOWN: | |
1225 | if (remote_debug) | |
1226 | fprintf_unfiltered (gdb_stdlog, | |
1227 | "Packet %s (%s) is NOT supported\n", | |
1228 | config->name, config->title); | |
1229 | config->support = PACKET_DISABLE; | |
1230 | break; | |
1231 | case PACKET_DISABLE: | |
1232 | break; | |
1233 | } | |
a76d924d | 1234 | break; |
5a2468f5 | 1235 | } |
a76d924d DJ |
1236 | |
1237 | return result; | |
5a2468f5 JM |
1238 | } |
1239 | ||
444abaca DJ |
1240 | enum { |
1241 | PACKET_vCont = 0, | |
1242 | PACKET_X, | |
1243 | PACKET_qSymbol, | |
1244 | PACKET_P, | |
1245 | PACKET_p, | |
1246 | PACKET_Z0, | |
1247 | PACKET_Z1, | |
1248 | PACKET_Z2, | |
1249 | PACKET_Z3, | |
1250 | PACKET_Z4, | |
a6b151f1 DJ |
1251 | PACKET_vFile_open, |
1252 | PACKET_vFile_pread, | |
1253 | PACKET_vFile_pwrite, | |
1254 | PACKET_vFile_close, | |
1255 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1256 | PACKET_vFile_readlink, |
0876f84a | 1257 | PACKET_qXfer_auxv, |
23181151 | 1258 | PACKET_qXfer_features, |
cfa9d6d9 | 1259 | PACKET_qXfer_libraries, |
2268b414 | 1260 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1261 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1262 | PACKET_qXfer_spu_read, |
1263 | PACKET_qXfer_spu_write, | |
07e059b5 | 1264 | PACKET_qXfer_osdata, |
dc146f7c | 1265 | PACKET_qXfer_threads, |
0fb4aa4b | 1266 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1267 | PACKET_qXfer_traceframe_info, |
169081d0 | 1268 | PACKET_qXfer_uib, |
711e434b | 1269 | PACKET_qGetTIBAddr, |
444abaca | 1270 | PACKET_qGetTLSAddr, |
be2a5f71 | 1271 | PACKET_qSupported, |
89be2091 | 1272 | PACKET_QPassSignals, |
9b224c5e | 1273 | PACKET_QProgramSignals, |
08388c79 | 1274 | PACKET_qSearch_memory, |
2d717e4f DJ |
1275 | PACKET_vAttach, |
1276 | PACKET_vRun, | |
a6f3e723 | 1277 | PACKET_QStartNoAckMode, |
82f73884 | 1278 | PACKET_vKill, |
4aa995e1 PA |
1279 | PACKET_qXfer_siginfo_read, |
1280 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1281 | PACKET_qAttached, |
782b2b07 | 1282 | PACKET_ConditionalTracepoints, |
3788aec7 | 1283 | PACKET_ConditionalBreakpoints, |
d3ce09f5 | 1284 | PACKET_BreakpointCommands, |
7a697b8d | 1285 | PACKET_FastTracepoints, |
0fb4aa4b | 1286 | PACKET_StaticTracepoints, |
1e4d1764 | 1287 | PACKET_InstallInTrace, |
40ab02ce MS |
1288 | PACKET_bc, |
1289 | PACKET_bs, | |
409873ef | 1290 | PACKET_TracepointSource, |
d914c394 | 1291 | PACKET_QAllow, |
78d85199 | 1292 | PACKET_qXfer_fdpic, |
03583c20 | 1293 | PACKET_QDisableRandomization, |
d1feda86 | 1294 | PACKET_QAgent, |
444abaca DJ |
1295 | PACKET_MAX |
1296 | }; | |
506fb367 | 1297 | |
444abaca | 1298 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1299 | |
1300 | static void | |
444abaca DJ |
1301 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1302 | struct cmd_list_element *c) | |
dc8acb97 | 1303 | { |
444abaca | 1304 | struct packet_config *packet; |
dc8acb97 | 1305 | |
444abaca DJ |
1306 | for (packet = remote_protocol_packets; |
1307 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1308 | packet++) | |
1309 | { | |
1310 | if (&packet->detect == c->var) | |
1311 | { | |
1312 | update_packet_config (packet); | |
1313 | return; | |
1314 | } | |
1315 | } | |
9b20d036 | 1316 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1317 | c->name); |
dc8acb97 MS |
1318 | } |
1319 | ||
5a2468f5 | 1320 | static void |
444abaca DJ |
1321 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1322 | struct cmd_list_element *c, | |
1323 | const char *value) | |
5a2468f5 | 1324 | { |
444abaca | 1325 | struct packet_config *packet; |
5a2468f5 | 1326 | |
444abaca DJ |
1327 | for (packet = remote_protocol_packets; |
1328 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1329 | packet++) | |
1330 | { | |
1331 | if (&packet->detect == c->var) | |
1332 | { | |
1333 | show_packet_config_cmd (packet); | |
1334 | return; | |
1335 | } | |
1336 | } | |
9b20d036 | 1337 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1338 | c->name); |
5a2468f5 JM |
1339 | } |
1340 | ||
d471ea57 AC |
1341 | /* Should we try one of the 'Z' requests? */ |
1342 | ||
1343 | enum Z_packet_type | |
1344 | { | |
1345 | Z_PACKET_SOFTWARE_BP, | |
1346 | Z_PACKET_HARDWARE_BP, | |
1347 | Z_PACKET_WRITE_WP, | |
1348 | Z_PACKET_READ_WP, | |
1349 | Z_PACKET_ACCESS_WP, | |
1350 | NR_Z_PACKET_TYPES | |
1351 | }; | |
96baa820 | 1352 | |
d471ea57 | 1353 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1354 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1355 | |
7f19b9a2 | 1356 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1357 | |
1358 | static void | |
fba45db2 KB |
1359 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1360 | struct cmd_list_element *c) | |
96baa820 | 1361 | { |
d471ea57 | 1362 | int i; |
a744cf53 | 1363 | |
d471ea57 AC |
1364 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1365 | { | |
444abaca DJ |
1366 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1367 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1368 | } |
96baa820 JM |
1369 | } |
1370 | ||
1371 | static void | |
08546159 AC |
1372 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1373 | struct cmd_list_element *c, | |
1374 | const char *value) | |
96baa820 | 1375 | { |
d471ea57 | 1376 | int i; |
a744cf53 | 1377 | |
d471ea57 AC |
1378 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1379 | { | |
444abaca | 1380 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1381 | } |
96baa820 JM |
1382 | } |
1383 | ||
9d1f7ab2 MS |
1384 | /* Should we try the 'ThreadInfo' query packet? |
1385 | ||
1386 | This variable (NOT available to the user: auto-detect only!) | |
1387 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1388 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1389 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1390 | and set to false when the target fails to recognize it). */ |
1391 | ||
1392 | static int use_threadinfo_query; | |
1393 | static int use_threadextra_query; | |
1394 | ||
23860348 | 1395 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1396 | static struct async_signal_handler *sigint_remote_twice_token; |
1397 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1398 | |
74531fed PA |
1399 | \f |
1400 | /* Asynchronous signal handle registered as event loop source for | |
1401 | when we have pending events ready to be passed to the core. */ | |
1402 | ||
1403 | static struct async_event_handler *remote_async_inferior_event_token; | |
1404 | ||
1405 | /* Asynchronous signal handle registered as event loop source for when | |
1406 | the remote sent us a %Stop notification. The registered callback | |
1407 | will do a vStopped sequence to pull the rest of the events out of | |
1408 | the remote side into our event queue. */ | |
1409 | ||
1410 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1411 | \f |
1412 | ||
79d7f229 PA |
1413 | static ptid_t magic_null_ptid; |
1414 | static ptid_t not_sent_ptid; | |
1415 | static ptid_t any_thread_ptid; | |
1416 | ||
1417 | /* These are the threads which we last sent to the remote system. The | |
1418 | TID member will be -1 for all or -2 for not sent yet. */ | |
1419 | ||
1420 | static ptid_t general_thread; | |
1421 | static ptid_t continue_thread; | |
c5aa993b | 1422 | |
a7c3d162 | 1423 | /* This is the traceframe which we last selected on the remote system. |
e6e4e701 PA |
1424 | It will be -1 if no traceframe is selected. */ |
1425 | static int remote_traceframe_number = -1; | |
1426 | ||
0b16c5cf PA |
1427 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1428 | detach instead of killing it when bailing out). */ | |
1429 | ||
1430 | static int | |
1431 | remote_query_attached (int pid) | |
1432 | { | |
1433 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 1434 | size_t size = get_remote_packet_size (); |
0b16c5cf PA |
1435 | |
1436 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1437 | return 0; | |
1438 | ||
1439 | if (remote_multi_process_p (rs)) | |
bba74b36 | 1440 | xsnprintf (rs->buf, size, "qAttached:%x", pid); |
0b16c5cf | 1441 | else |
bba74b36 | 1442 | xsnprintf (rs->buf, size, "qAttached"); |
0b16c5cf PA |
1443 | |
1444 | putpkt (rs->buf); | |
1445 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1446 | ||
1447 | switch (packet_ok (rs->buf, | |
1554e9be | 1448 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1449 | { |
1450 | case PACKET_OK: | |
1451 | if (strcmp (rs->buf, "1") == 0) | |
1452 | return 1; | |
1453 | break; | |
1454 | case PACKET_ERROR: | |
1455 | warning (_("Remote failure reply: %s"), rs->buf); | |
1456 | break; | |
1457 | case PACKET_UNKNOWN: | |
1458 | break; | |
1459 | } | |
1460 | ||
1461 | return 0; | |
1462 | } | |
1463 | ||
49c62f2e PA |
1464 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1465 | has been invented by GDB, instead of reported by the target. Since | |
1466 | we can be connected to a remote system before before knowing about | |
1467 | any inferior, mark the target with execution when we find the first | |
1468 | inferior. If ATTACHED is 1, then we had just attached to this | |
1469 | inferior. If it is 0, then we just created this inferior. If it | |
1470 | is -1, then try querying the remote stub to find out if it had | |
1471 | attached to the inferior or not. */ | |
1941c569 PA |
1472 | |
1473 | static struct inferior * | |
49c62f2e | 1474 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1475 | { |
1941c569 PA |
1476 | struct inferior *inf; |
1477 | ||
0b16c5cf PA |
1478 | /* Check whether this process we're learning about is to be |
1479 | considered attached, or if is to be considered to have been | |
1480 | spawned by the stub. */ | |
1481 | if (attached == -1) | |
1482 | attached = remote_query_attached (pid); | |
1483 | ||
6c95b8df PA |
1484 | if (gdbarch_has_global_solist (target_gdbarch)) |
1485 | { | |
1486 | /* If the target shares code across all inferiors, then every | |
1487 | attach adds a new inferior. */ | |
1488 | inf = add_inferior (pid); | |
1489 | ||
1490 | /* ... and every inferior is bound to the same program space. | |
1491 | However, each inferior may still have its own address | |
1492 | space. */ | |
1493 | inf->aspace = maybe_new_address_space (); | |
1494 | inf->pspace = current_program_space; | |
1495 | } | |
1496 | else | |
1497 | { | |
1498 | /* In the traditional debugging scenario, there's a 1-1 match | |
1499 | between program/address spaces. We simply bind the inferior | |
1500 | to the program space's address space. */ | |
1501 | inf = current_inferior (); | |
1502 | inferior_appeared (inf, pid); | |
1503 | } | |
1941c569 | 1504 | |
0b16c5cf | 1505 | inf->attach_flag = attached; |
49c62f2e | 1506 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1507 | |
1941c569 PA |
1508 | return inf; |
1509 | } | |
1510 | ||
1511 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1512 | according to RUNNING. */ | |
1513 | ||
c906108c | 1514 | static void |
1941c569 | 1515 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1516 | { |
1941c569 PA |
1517 | add_thread (ptid); |
1518 | ||
1519 | set_executing (ptid, running); | |
1520 | set_running (ptid, running); | |
1521 | } | |
1522 | ||
1523 | /* Come here when we learn about a thread id from the remote target. | |
1524 | It may be the first time we hear about such thread, so take the | |
1525 | opportunity to add it to GDB's thread list. In case this is the | |
1526 | first time we're noticing its corresponding inferior, add it to | |
1527 | GDB's inferior list as well. */ | |
1528 | ||
1529 | static void | |
1530 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1531 | { | |
c906108c SS |
1532 | /* If this is a new thread, add it to GDB's thread list. |
1533 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1534 | |
1535 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1536 | { | |
1537 | /* We're seeing an event on a thread id we knew had exited. | |
1538 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1539 | remote_add_thread (currthread, running); |
82f73884 PA |
1540 | return; |
1541 | } | |
1542 | ||
79d7f229 | 1543 | if (!in_thread_list (currthread)) |
c0a2216e | 1544 | { |
1941c569 | 1545 | struct inferior *inf = NULL; |
bad34192 | 1546 | int pid = ptid_get_pid (currthread); |
1941c569 | 1547 | |
bad34192 PA |
1548 | if (ptid_is_pid (inferior_ptid) |
1549 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1550 | { |
1551 | /* inferior_ptid has no thread member yet. This can happen | |
1552 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1553 | stub doesn't support qC. This is the first stop reported | |
1554 | after an attach, so this is the main thread. Update the | |
1555 | ptid in the thread list. */ | |
bad34192 PA |
1556 | if (in_thread_list (pid_to_ptid (pid))) |
1557 | thread_change_ptid (inferior_ptid, currthread); | |
1558 | else | |
1559 | { | |
1560 | remote_add_thread (currthread, running); | |
1561 | inferior_ptid = currthread; | |
1562 | } | |
dc146f7c | 1563 | return; |
c0a2216e | 1564 | } |
82f73884 PA |
1565 | |
1566 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1567 | { |
1568 | /* inferior_ptid is not set yet. This can happen with the | |
1569 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1570 | doesn't support qC. This is the first stop reported | |
1571 | after an attach, so this is the main thread. Update the | |
1572 | ptid in the thread list. */ | |
dc146f7c | 1573 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1574 | return; |
c0a2216e | 1575 | } |
82f73884 | 1576 | |
29c87f7f PA |
1577 | /* When connecting to a target remote, or to a target |
1578 | extended-remote which already was debugging an inferior, we | |
1579 | may not know about it yet. Add it before adding its child | |
1580 | thread, so notifications are emitted in a sensible order. */ | |
1581 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1582 | { |
1583 | struct remote_state *rs = get_remote_state (); | |
1584 | int fake_pid_p = !remote_multi_process_p (rs); | |
1585 | ||
1586 | inf = remote_add_inferior (fake_pid_p, | |
1587 | ptid_get_pid (currthread), -1); | |
1588 | } | |
29c87f7f | 1589 | |
82f73884 | 1590 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1591 | remote_add_thread (currthread, running); |
1592 | ||
1593 | /* If we found a new inferior, let the common code do whatever | |
1594 | it needs to with it (e.g., read shared libraries, insert | |
1595 | breakpoints). */ | |
1596 | if (inf != NULL) | |
1597 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1598 | } |
c906108c SS |
1599 | } |
1600 | ||
dc146f7c VP |
1601 | /* Return the private thread data, creating it if necessary. */ |
1602 | ||
70221824 | 1603 | static struct private_thread_info * |
dc146f7c VP |
1604 | demand_private_info (ptid_t ptid) |
1605 | { | |
1606 | struct thread_info *info = find_thread_ptid (ptid); | |
1607 | ||
1608 | gdb_assert (info); | |
1609 | ||
1610 | if (!info->private) | |
1611 | { | |
1612 | info->private = xmalloc (sizeof (*(info->private))); | |
1613 | info->private_dtor = free_private_thread_info; | |
1614 | info->private->core = -1; | |
1615 | info->private->extra = 0; | |
1616 | } | |
1617 | ||
1618 | return info->private; | |
1619 | } | |
1620 | ||
74531fed PA |
1621 | /* Call this function as a result of |
1622 | 1) A halt indication (T packet) containing a thread id | |
1623 | 2) A direct query of currthread | |
0df8b418 | 1624 | 3) Successful execution of set thread */ |
74531fed PA |
1625 | |
1626 | static void | |
1627 | record_currthread (ptid_t currthread) | |
1628 | { | |
1629 | general_thread = currthread; | |
74531fed PA |
1630 | } |
1631 | ||
89be2091 DJ |
1632 | static char *last_pass_packet; |
1633 | ||
1634 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1635 | it can simply pass through to the inferior without reporting. */ | |
1636 | ||
1637 | static void | |
2455069d | 1638 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1639 | { |
1640 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1641 | { | |
1642 | char *pass_packet, *p; | |
89be2091 DJ |
1643 | int count = 0, i; |
1644 | ||
1645 | gdb_assert (numsigs < 256); | |
1646 | for (i = 0; i < numsigs; i++) | |
1647 | { | |
2455069d | 1648 | if (pass_signals[i]) |
89be2091 DJ |
1649 | count++; |
1650 | } | |
1651 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1652 | strcpy (pass_packet, "QPassSignals:"); | |
1653 | p = pass_packet + strlen (pass_packet); | |
1654 | for (i = 0; i < numsigs; i++) | |
1655 | { | |
2455069d | 1656 | if (pass_signals[i]) |
89be2091 DJ |
1657 | { |
1658 | if (i >= 16) | |
1659 | *p++ = tohex (i >> 4); | |
1660 | *p++ = tohex (i & 15); | |
1661 | if (count) | |
1662 | *p++ = ';'; | |
1663 | else | |
1664 | break; | |
1665 | count--; | |
1666 | } | |
1667 | } | |
1668 | *p = 0; | |
1669 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1670 | { | |
1671 | struct remote_state *rs = get_remote_state (); | |
1672 | char *buf = rs->buf; | |
1673 | ||
1674 | putpkt (pass_packet); | |
1675 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1676 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1677 | if (last_pass_packet) | |
1678 | xfree (last_pass_packet); | |
1679 | last_pass_packet = pass_packet; | |
1680 | } | |
1681 | else | |
1682 | xfree (pass_packet); | |
1683 | } | |
1684 | } | |
1685 | ||
9b224c5e PA |
1686 | /* The last QProgramSignals packet sent to the target. We bypass |
1687 | sending a new program signals list down to the target if the new | |
1688 | packet is exactly the same as the last we sent. IOW, we only let | |
1689 | the target know about program signals list changes. */ | |
1690 | ||
1691 | static char *last_program_signals_packet; | |
1692 | ||
1693 | /* If 'QProgramSignals' is supported, tell the remote stub what | |
1694 | signals it should pass through to the inferior when detaching. */ | |
1695 | ||
1696 | static void | |
1697 | remote_program_signals (int numsigs, unsigned char *signals) | |
1698 | { | |
1699 | if (remote_protocol_packets[PACKET_QProgramSignals].support != PACKET_DISABLE) | |
1700 | { | |
1701 | char *packet, *p; | |
1702 | int count = 0, i; | |
1703 | ||
1704 | gdb_assert (numsigs < 256); | |
1705 | for (i = 0; i < numsigs; i++) | |
1706 | { | |
1707 | if (signals[i]) | |
1708 | count++; | |
1709 | } | |
1710 | packet = xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); | |
1711 | strcpy (packet, "QProgramSignals:"); | |
1712 | p = packet + strlen (packet); | |
1713 | for (i = 0; i < numsigs; i++) | |
1714 | { | |
1715 | if (signal_pass_state (i)) | |
1716 | { | |
1717 | if (i >= 16) | |
1718 | *p++ = tohex (i >> 4); | |
1719 | *p++ = tohex (i & 15); | |
1720 | if (count) | |
1721 | *p++ = ';'; | |
1722 | else | |
1723 | break; | |
1724 | count--; | |
1725 | } | |
1726 | } | |
1727 | *p = 0; | |
1728 | if (!last_program_signals_packet | |
1729 | || strcmp (last_program_signals_packet, packet) != 0) | |
1730 | { | |
1731 | struct remote_state *rs = get_remote_state (); | |
1732 | char *buf = rs->buf; | |
1733 | ||
1734 | putpkt (packet); | |
1735 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1736 | packet_ok (buf, &remote_protocol_packets[PACKET_QProgramSignals]); | |
1737 | xfree (last_program_signals_packet); | |
1738 | last_program_signals_packet = packet; | |
1739 | } | |
1740 | else | |
1741 | xfree (packet); | |
1742 | } | |
1743 | } | |
1744 | ||
79d7f229 PA |
1745 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1746 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1747 | thread. If GEN is set, set the general thread, if not, then set | |
1748 | the step/continue thread. */ | |
c906108c | 1749 | static void |
79d7f229 | 1750 | set_thread (struct ptid ptid, int gen) |
c906108c | 1751 | { |
d01949b6 | 1752 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1753 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1754 | char *buf = rs->buf; |
79d7f229 | 1755 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1756 | |
79d7f229 | 1757 | if (ptid_equal (state, ptid)) |
c906108c SS |
1758 | return; |
1759 | ||
79d7f229 PA |
1760 | *buf++ = 'H'; |
1761 | *buf++ = gen ? 'g' : 'c'; | |
1762 | if (ptid_equal (ptid, magic_null_ptid)) | |
1763 | xsnprintf (buf, endbuf - buf, "0"); | |
1764 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1765 | xsnprintf (buf, endbuf - buf, "0"); | |
1766 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1767 | xsnprintf (buf, endbuf - buf, "-1"); | |
1768 | else | |
82f73884 | 1769 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1770 | putpkt (rs->buf); |
6d820c5c | 1771 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1772 | if (gen) |
79d7f229 | 1773 | general_thread = ptid; |
c906108c | 1774 | else |
79d7f229 | 1775 | continue_thread = ptid; |
c906108c | 1776 | } |
79d7f229 PA |
1777 | |
1778 | static void | |
1779 | set_general_thread (struct ptid ptid) | |
1780 | { | |
1781 | set_thread (ptid, 1); | |
1782 | } | |
1783 | ||
1784 | static void | |
1785 | set_continue_thread (struct ptid ptid) | |
1786 | { | |
1787 | set_thread (ptid, 0); | |
1788 | } | |
1789 | ||
3c9c4b83 PA |
1790 | /* Change the remote current process. Which thread within the process |
1791 | ends up selected isn't important, as long as it is the same process | |
1792 | as what INFERIOR_PTID points to. | |
1793 | ||
1794 | This comes from that fact that there is no explicit notion of | |
1795 | "selected process" in the protocol. The selected process for | |
1796 | general operations is the process the selected general thread | |
1797 | belongs to. */ | |
1798 | ||
1799 | static void | |
1800 | set_general_process (void) | |
1801 | { | |
1802 | struct remote_state *rs = get_remote_state (); | |
1803 | ||
1804 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1805 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1806 | return; |
1807 | ||
1808 | /* We only need to change the remote current thread if it's pointing | |
1809 | at some other process. */ | |
1810 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1811 | set_general_thread (inferior_ptid); | |
1812 | } | |
1813 | ||
c906108c | 1814 | \f |
79d7f229 PA |
1815 | /* Return nonzero if the thread PTID is still alive on the remote |
1816 | system. */ | |
c906108c SS |
1817 | |
1818 | static int | |
28439f5e | 1819 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1820 | { |
6d820c5c | 1821 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1822 | char *p, *endp; |
c906108c | 1823 | |
c0a2216e PA |
1824 | if (ptid_equal (ptid, magic_null_ptid)) |
1825 | /* The main thread is always alive. */ | |
1826 | return 1; | |
1827 | ||
1828 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1829 | /* The main thread is always alive. This can happen after a | |
1830 | vAttach, if the remote side doesn't support | |
1831 | multi-threading. */ | |
1832 | return 1; | |
1833 | ||
82f73884 PA |
1834 | p = rs->buf; |
1835 | endp = rs->buf + get_remote_packet_size (); | |
1836 | ||
1837 | *p++ = 'T'; | |
1838 | write_ptid (p, endp, ptid); | |
1839 | ||
2e9f7625 | 1840 | putpkt (rs->buf); |
6d820c5c | 1841 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1842 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1843 | } |
1844 | ||
1845 | /* About these extended threadlist and threadinfo packets. They are | |
1846 | variable length packets but, the fields within them are often fixed | |
1847 | length. They are redundent enough to send over UDP as is the | |
1848 | remote protocol in general. There is a matching unit test module | |
1849 | in libstub. */ | |
1850 | ||
cce74817 JM |
1851 | #define OPAQUETHREADBYTES 8 |
1852 | ||
1853 | /* a 64 bit opaque identifier */ | |
1854 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1855 | ||
23860348 | 1856 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1857 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1858 | changable. */ |
cce74817 JM |
1859 | |
1860 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1861 | Plan to fix this. */ |
cce74817 | 1862 | |
23860348 | 1863 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1864 | |
9d1f7ab2 | 1865 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1866 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1867 | |
1868 | struct gdb_ext_thread_info | |
c5aa993b | 1869 | { |
23860348 | 1870 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1871 | int active; /* Has state interesting to GDB? |
23860348 | 1872 | regs, stack. */ |
2bc416ba | 1873 | char display[256]; /* Brief state display, name, |
cedea757 | 1874 | blocked/suspended. */ |
23860348 | 1875 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1876 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1877 | whatever. */ |
c5aa993b | 1878 | }; |
cce74817 JM |
1879 | |
1880 | /* The volume of remote transfers can be limited by submitting | |
1881 | a mask containing bits specifying the desired information. | |
1882 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1883 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1884 | |
1885 | #define TAG_THREADID 1 | |
1886 | #define TAG_EXISTS 2 | |
1887 | #define TAG_DISPLAY 4 | |
1888 | #define TAG_THREADNAME 8 | |
c5aa993b | 1889 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1890 | |
23860348 | 1891 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1892 | |
b2dd6311 | 1893 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1894 | |
a14ed312 | 1895 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1896 | |
a14ed312 | 1897 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1898 | |
23860348 | 1899 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1900 | |
a14ed312 | 1901 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1902 | |
a14ed312 | 1903 | static char *pack_int (char *buf, int value); |
cce74817 | 1904 | |
a14ed312 | 1905 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1906 | |
a14ed312 | 1907 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1908 | |
23860348 | 1909 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1910 | |
23860348 | 1911 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1912 | |
23860348 | 1913 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1914 | |
23860348 | 1915 | static int threadref_to_int (threadref *ref); |
cce74817 | 1916 | |
23860348 | 1917 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1918 | |
23860348 | 1919 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1920 | |
2bc416ba | 1921 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1922 | threadref *id); |
cce74817 | 1923 | |
a14ed312 | 1924 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1925 | threadref *expectedref, |
a14ed312 KB |
1926 | struct gdb_ext_thread_info |
1927 | *info); | |
cce74817 JM |
1928 | |
1929 | ||
2bc416ba | 1930 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1931 | int fieldset, /*TAG mask */ |
a14ed312 | 1932 | struct gdb_ext_thread_info *info); |
cce74817 | 1933 | |
a14ed312 KB |
1934 | static char *pack_threadlist_request (char *pkt, int startflag, |
1935 | int threadcount, | |
23860348 | 1936 | threadref *nextthread); |
cce74817 | 1937 | |
a14ed312 KB |
1938 | static int parse_threadlist_response (char *pkt, |
1939 | int result_limit, | |
23860348 | 1940 | threadref *original_echo, |
2bc416ba | 1941 | threadref *resultlist, |
23860348 | 1942 | int *doneflag); |
cce74817 | 1943 | |
a14ed312 | 1944 | static int remote_get_threadlist (int startflag, |
23860348 | 1945 | threadref *nextthread, |
a14ed312 KB |
1946 | int result_limit, |
1947 | int *done, | |
2bc416ba | 1948 | int *result_count, |
23860348 | 1949 | threadref *threadlist); |
cce74817 | 1950 | |
23860348 | 1951 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1952 | |
a14ed312 KB |
1953 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1954 | void *context, int looplimit); | |
cce74817 | 1955 | |
23860348 | 1956 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1957 | |
82f73884 PA |
1958 | |
1959 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1960 | buffer we're allowed to write to. Returns | |
1961 | BUF+CHARACTERS_WRITTEN. */ | |
1962 | ||
1963 | static char * | |
1964 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1965 | { | |
1966 | int pid, tid; | |
1967 | struct remote_state *rs = get_remote_state (); | |
1968 | ||
1969 | if (remote_multi_process_p (rs)) | |
1970 | { | |
1971 | pid = ptid_get_pid (ptid); | |
1972 | if (pid < 0) | |
1973 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1974 | else | |
1975 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1976 | } | |
1977 | tid = ptid_get_tid (ptid); | |
1978 | if (tid < 0) | |
1979 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1980 | else | |
1981 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1982 | ||
1983 | return buf; | |
1984 | } | |
1985 | ||
1986 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1987 | passed the last parsed char. Returns null_ptid on error. */ | |
1988 | ||
1989 | static ptid_t | |
1990 | read_ptid (char *buf, char **obuf) | |
1991 | { | |
1992 | char *p = buf; | |
1993 | char *pp; | |
1994 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1995 | |
1996 | if (*p == 'p') | |
1997 | { | |
1998 | /* Multi-process ptid. */ | |
1999 | pp = unpack_varlen_hex (p + 1, &pid); | |
2000 | if (*pp != '.') | |
b37520b6 | 2001 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2002 | |
2003 | p = pp; | |
2004 | pp = unpack_varlen_hex (p + 1, &tid); | |
2005 | if (obuf) | |
2006 | *obuf = pp; | |
2007 | return ptid_build (pid, 0, tid); | |
2008 | } | |
2009 | ||
2010 | /* No multi-process. Just a tid. */ | |
2011 | pp = unpack_varlen_hex (p, &tid); | |
2012 | ||
2013 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
2014 | what's in inferior_ptid, unless it's null at this point. If so, |
2015 | then since there's no way to know the pid of the reported | |
2016 | threads, use the magic number. */ | |
2017 | if (ptid_equal (inferior_ptid, null_ptid)) | |
2018 | pid = ptid_get_pid (magic_null_ptid); | |
2019 | else | |
2020 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
2021 | |
2022 | if (obuf) | |
2023 | *obuf = pp; | |
2024 | return ptid_build (pid, 0, tid); | |
2025 | } | |
2026 | ||
23860348 | 2027 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
2028 | |
2029 | static const char hexchars[] = "0123456789abcdef"; | |
2030 | ||
2031 | static int | |
fba45db2 | 2032 | ishex (int ch, int *val) |
c906108c SS |
2033 | { |
2034 | if ((ch >= 'a') && (ch <= 'f')) | |
2035 | { | |
2036 | *val = ch - 'a' + 10; | |
2037 | return 1; | |
2038 | } | |
2039 | if ((ch >= 'A') && (ch <= 'F')) | |
2040 | { | |
2041 | *val = ch - 'A' + 10; | |
2042 | return 1; | |
2043 | } | |
2044 | if ((ch >= '0') && (ch <= '9')) | |
2045 | { | |
2046 | *val = ch - '0'; | |
2047 | return 1; | |
2048 | } | |
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | static int | |
fba45db2 | 2053 | stubhex (int ch) |
c906108c SS |
2054 | { |
2055 | if (ch >= 'a' && ch <= 'f') | |
2056 | return ch - 'a' + 10; | |
2057 | if (ch >= '0' && ch <= '9') | |
2058 | return ch - '0'; | |
2059 | if (ch >= 'A' && ch <= 'F') | |
2060 | return ch - 'A' + 10; | |
2061 | return -1; | |
2062 | } | |
2063 | ||
2064 | static int | |
fba45db2 | 2065 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
2066 | { |
2067 | int nibble; | |
2068 | int retval = 0; | |
2069 | ||
2070 | while (fieldlength) | |
2071 | { | |
2072 | nibble = stubhex (*buff++); | |
2073 | retval |= nibble; | |
2074 | fieldlength--; | |
2075 | if (fieldlength) | |
2076 | retval = retval << 4; | |
2077 | } | |
2078 | return retval; | |
2079 | } | |
2080 | ||
2081 | char * | |
fba45db2 | 2082 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2083 | ULONGEST *result) |
c906108c SS |
2084 | { |
2085 | int nibble; | |
d49c44d5 | 2086 | ULONGEST retval = 0; |
c906108c SS |
2087 | |
2088 | while (ishex (*buff, &nibble)) | |
2089 | { | |
2090 | buff++; | |
2091 | retval = retval << 4; | |
2092 | retval |= nibble & 0x0f; | |
2093 | } | |
2094 | *result = retval; | |
2095 | return buff; | |
2096 | } | |
2097 | ||
2098 | static char * | |
fba45db2 | 2099 | unpack_nibble (char *buf, int *val) |
c906108c | 2100 | { |
b7589f7d | 2101 | *val = fromhex (*buf++); |
c906108c SS |
2102 | return buf; |
2103 | } | |
2104 | ||
2105 | static char * | |
fba45db2 | 2106 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2107 | { |
2108 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2109 | return buf; | |
2110 | } | |
2111 | ||
2112 | static char * | |
fba45db2 | 2113 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2114 | { |
2115 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2116 | *pkt++ = hexchars[(byte & 0xf)]; | |
2117 | return pkt; | |
2118 | } | |
2119 | ||
2120 | static char * | |
fba45db2 | 2121 | unpack_byte (char *buf, int *value) |
c906108c SS |
2122 | { |
2123 | *value = stub_unpack_int (buf, 2); | |
2124 | return buf + 2; | |
2125 | } | |
2126 | ||
2127 | static char * | |
fba45db2 | 2128 | pack_int (char *buf, int value) |
c906108c SS |
2129 | { |
2130 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2131 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2132 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2133 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2134 | return buf; | |
2135 | } | |
2136 | ||
2137 | static char * | |
fba45db2 | 2138 | unpack_int (char *buf, int *value) |
c906108c SS |
2139 | { |
2140 | *value = stub_unpack_int (buf, 8); | |
2141 | return buf + 8; | |
2142 | } | |
2143 | ||
23860348 | 2144 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2145 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2146 | |
2147 | static char * | |
fba45db2 | 2148 | pack_string (char *pkt, char *string) |
c906108c SS |
2149 | { |
2150 | char ch; | |
2151 | int len; | |
2152 | ||
2153 | len = strlen (string); | |
2154 | if (len > 200) | |
23860348 | 2155 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2156 | pkt = pack_hex_byte (pkt, len); |
2157 | while (len-- > 0) | |
2158 | { | |
2159 | ch = *string++; | |
2160 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2161 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2162 | *pkt++ = ch; |
2163 | } | |
2164 | return pkt; | |
2165 | } | |
2166 | #endif /* 0 (unused) */ | |
2167 | ||
2168 | static char * | |
fba45db2 | 2169 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2170 | { |
2171 | while (length--) | |
2172 | *dest++ = *src++; | |
2173 | *dest = '\0'; | |
2174 | return src; | |
2175 | } | |
2176 | ||
2177 | static char * | |
fba45db2 | 2178 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2179 | { |
2180 | char *limit; | |
2181 | unsigned char *altid; | |
2182 | ||
2183 | altid = (unsigned char *) id; | |
2184 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2185 | while (pkt < limit) | |
2186 | pkt = pack_hex_byte (pkt, *altid++); | |
2187 | return pkt; | |
2188 | } | |
2189 | ||
2190 | ||
2191 | static char * | |
fba45db2 | 2192 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2193 | { |
2194 | char *altref; | |
2195 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2196 | int x, y; | |
2197 | ||
2198 | altref = (char *) id; | |
2199 | ||
2200 | while (inbuf < limit) | |
2201 | { | |
2202 | x = stubhex (*inbuf++); | |
2203 | y = stubhex (*inbuf++); | |
2204 | *altref++ = (x << 4) | y; | |
2205 | } | |
2206 | return inbuf; | |
2207 | } | |
2208 | ||
2209 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2210 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2211 | to use 64bit thread references internally. This is an adapter |
2212 | function. */ | |
2213 | ||
2214 | void | |
fba45db2 | 2215 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2216 | { |
2217 | unsigned char *scan; | |
2218 | ||
2219 | scan = (unsigned char *) id; | |
2220 | { | |
2221 | int i = 4; | |
2222 | while (i--) | |
2223 | *scan++ = 0; | |
2224 | } | |
2225 | *scan++ = (value >> 24) & 0xff; | |
2226 | *scan++ = (value >> 16) & 0xff; | |
2227 | *scan++ = (value >> 8) & 0xff; | |
2228 | *scan++ = (value & 0xff); | |
2229 | } | |
2230 | ||
2231 | static int | |
fba45db2 | 2232 | threadref_to_int (threadref *ref) |
c906108c SS |
2233 | { |
2234 | int i, value = 0; | |
2235 | unsigned char *scan; | |
2236 | ||
cfd77fa1 | 2237 | scan = *ref; |
c906108c SS |
2238 | scan += 4; |
2239 | i = 4; | |
2240 | while (i-- > 0) | |
2241 | value = (value << 8) | ((*scan++) & 0xff); | |
2242 | return value; | |
2243 | } | |
2244 | ||
2245 | static void | |
fba45db2 | 2246 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2247 | { |
2248 | int i; | |
2249 | unsigned char *csrc, *cdest; | |
2250 | ||
2251 | csrc = (unsigned char *) src; | |
2252 | cdest = (unsigned char *) dest; | |
2253 | i = 8; | |
2254 | while (i--) | |
2255 | *cdest++ = *csrc++; | |
2256 | } | |
2257 | ||
2258 | static int | |
fba45db2 | 2259 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2260 | { |
23860348 | 2261 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2262 | #if 0 |
2263 | unsigned char *srcp, *destp; | |
2264 | int i, result; | |
2265 | srcp = (char *) src; | |
2266 | destp = (char *) dest; | |
2267 | ||
2268 | result = 1; | |
2269 | while (i-- > 0) | |
2270 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2271 | return result; | |
2272 | #endif | |
2273 | return 1; | |
2274 | } | |
2275 | ||
2276 | /* | |
c5aa993b JM |
2277 | threadid:1, # always request threadid |
2278 | context_exists:2, | |
2279 | display:4, | |
2280 | unique_name:8, | |
2281 | more_display:16 | |
2282 | */ | |
c906108c SS |
2283 | |
2284 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2285 | ||
2286 | static char * | |
fba45db2 | 2287 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2288 | { |
23860348 MS |
2289 | *pkt++ = 'q'; /* Info Query */ |
2290 | *pkt++ = 'P'; /* process or thread info */ | |
2291 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2292 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2293 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2294 | return pkt; |
2295 | } | |
2296 | ||
23860348 | 2297 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2298 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2299 | add more fields as time goes by. */ |
c906108c | 2300 | |
23860348 | 2301 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2302 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2303 | fetch registers and its stack? */ |
c5aa993b | 2304 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2305 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2306 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2307 | the process. */ |
c906108c SS |
2308 | |
2309 | static int | |
fba45db2 KB |
2310 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2311 | struct gdb_ext_thread_info *info) | |
c906108c | 2312 | { |
d01949b6 | 2313 | struct remote_state *rs = get_remote_state (); |
c906108c | 2314 | int mask, length; |
cfd77fa1 | 2315 | int tag; |
c906108c | 2316 | threadref ref; |
6d820c5c | 2317 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2318 | int retval = 1; |
2319 | ||
23860348 | 2320 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2321 | info->active = 0; |
2322 | info->display[0] = '\0'; | |
2323 | info->shortname[0] = '\0'; | |
2324 | info->more_display[0] = '\0'; | |
2325 | ||
23860348 MS |
2326 | /* Assume the characters indicating the packet type have been |
2327 | stripped. */ | |
c906108c SS |
2328 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2329 | pkt = unpack_threadid (pkt, &ref); | |
2330 | ||
2331 | if (mask == 0) | |
8a3fe4f8 | 2332 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2333 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2334 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2335 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2336 | return 0; |
2337 | } | |
2338 | copy_threadref (&info->threadid, &ref); | |
2339 | ||
23860348 | 2340 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2341 | |
23860348 MS |
2342 | /* Packets are terminated with nulls. */ |
2343 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2344 | { |
2345 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2346 | pkt = unpack_byte (pkt, &length); /* length */ |
2347 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2348 | { |
8a3fe4f8 | 2349 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2350 | retval = 0; |
2351 | break; | |
2352 | } | |
2353 | if (tag == TAG_THREADID) | |
2354 | { | |
2355 | if (length != 16) | |
2356 | { | |
8a3fe4f8 | 2357 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2358 | retval = 0; |
2359 | break; | |
2360 | } | |
2361 | pkt = unpack_threadid (pkt, &ref); | |
2362 | mask = mask & ~TAG_THREADID; | |
2363 | continue; | |
2364 | } | |
2365 | if (tag == TAG_EXISTS) | |
2366 | { | |
2367 | info->active = stub_unpack_int (pkt, length); | |
2368 | pkt += length; | |
2369 | mask = mask & ~(TAG_EXISTS); | |
2370 | if (length > 8) | |
2371 | { | |
8a3fe4f8 | 2372 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2373 | retval = 0; |
2374 | break; | |
2375 | } | |
2376 | continue; | |
2377 | } | |
2378 | if (tag == TAG_THREADNAME) | |
2379 | { | |
2380 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2381 | mask = mask & ~TAG_THREADNAME; | |
2382 | continue; | |
2383 | } | |
2384 | if (tag == TAG_DISPLAY) | |
2385 | { | |
2386 | pkt = unpack_string (pkt, &info->display[0], length); | |
2387 | mask = mask & ~TAG_DISPLAY; | |
2388 | continue; | |
2389 | } | |
2390 | if (tag == TAG_MOREDISPLAY) | |
2391 | { | |
2392 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2393 | mask = mask & ~TAG_MOREDISPLAY; | |
2394 | continue; | |
2395 | } | |
8a3fe4f8 | 2396 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2397 | break; /* Not a tag we know about. */ |
c906108c SS |
2398 | } |
2399 | return retval; | |
2400 | } | |
2401 | ||
2402 | static int | |
fba45db2 KB |
2403 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2404 | struct gdb_ext_thread_info *info) | |
c906108c | 2405 | { |
d01949b6 | 2406 | struct remote_state *rs = get_remote_state (); |
c906108c | 2407 | int result; |
c906108c | 2408 | |
2e9f7625 DJ |
2409 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2410 | putpkt (rs->buf); | |
6d820c5c | 2411 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2412 | |
2413 | if (rs->buf[0] == '\0') | |
2414 | return 0; | |
2415 | ||
2e9f7625 | 2416 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2417 | threadid, info); |
c906108c SS |
2418 | return result; |
2419 | } | |
2420 | ||
c906108c SS |
2421 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2422 | ||
2423 | static char * | |
fba45db2 KB |
2424 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2425 | threadref *nextthread) | |
c906108c SS |
2426 | { |
2427 | *pkt++ = 'q'; /* info query packet */ | |
2428 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2429 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2430 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2431 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2432 | *pkt = '\0'; | |
2433 | return pkt; | |
2434 | } | |
2435 | ||
2436 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2437 | ||
2438 | static int | |
fba45db2 KB |
2439 | parse_threadlist_response (char *pkt, int result_limit, |
2440 | threadref *original_echo, threadref *resultlist, | |
2441 | int *doneflag) | |
c906108c | 2442 | { |
d01949b6 | 2443 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2444 | char *limit; |
2445 | int count, resultcount, done; | |
2446 | ||
2447 | resultcount = 0; | |
2448 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2449 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2450 | /* done parse past here */ |
c906108c SS |
2451 | pkt = unpack_byte (pkt, &count); /* count field */ |
2452 | pkt = unpack_nibble (pkt, &done); | |
2453 | /* The first threadid is the argument threadid. */ | |
2454 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2455 | while ((count-- > 0) && (pkt < limit)) | |
2456 | { | |
2457 | pkt = unpack_threadid (pkt, resultlist++); | |
2458 | if (resultcount++ >= result_limit) | |
2459 | break; | |
2460 | } | |
2461 | if (doneflag) | |
2462 | *doneflag = done; | |
2463 | return resultcount; | |
2464 | } | |
2465 | ||
2466 | static int | |
fba45db2 KB |
2467 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2468 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2469 | { |
d01949b6 | 2470 | struct remote_state *rs = get_remote_state (); |
c906108c | 2471 | static threadref echo_nextthread; |
c906108c SS |
2472 | int result = 1; |
2473 | ||
23860348 | 2474 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2475 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2476 | >= get_remote_packet_size ()) | |
ea9c271d | 2477 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2478 | |
6d820c5c DJ |
2479 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2480 | putpkt (rs->buf); | |
2481 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2482 | |
d8f2712d | 2483 | if (*rs->buf == '\0') |
21bce120 | 2484 | return 0; |
d8f2712d VP |
2485 | else |
2486 | *result_count = | |
2487 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2488 | threadlist, done); | |
c906108c SS |
2489 | |
2490 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2491 | { | |
23860348 MS |
2492 | /* FIXME: This is a good reason to drop the packet. */ |
2493 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2494 | /* Possabilities : |
2495 | retransmit immediatly - race conditions | |
2496 | retransmit after timeout - yes | |
2497 | exit | |
2498 | wait for packet, then exit | |
2499 | */ | |
8a3fe4f8 | 2500 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2501 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2502 | } |
2503 | if (*result_count <= 0) | |
2504 | { | |
2505 | if (*done != 1) | |
2506 | { | |
8a3fe4f8 | 2507 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2508 | result = 0; |
2509 | } | |
2510 | return result; /* break; */ | |
2511 | } | |
2512 | if (*result_count > result_limit) | |
2513 | { | |
2514 | *result_count = 0; | |
8a3fe4f8 | 2515 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2516 | return 0; |
2517 | } | |
2518 | return result; | |
2519 | } | |
2520 | ||
23860348 MS |
2521 | /* This is the interface between remote and threads, remotes upper |
2522 | interface. */ | |
c906108c SS |
2523 | |
2524 | /* remote_find_new_threads retrieves the thread list and for each | |
2525 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2526 | adding the thread if it does not already exist. This involves |
c906108c SS |
2527 | getting partial thread lists from the remote target so, polling the |
2528 | quit_flag is required. */ | |
2529 | ||
2530 | ||
23860348 | 2531 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2532 | |
2533 | #define MAXTHREADLISTRESULTS 32 | |
2534 | ||
2535 | static int | |
fba45db2 KB |
2536 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2537 | int looplimit) | |
c906108c SS |
2538 | { |
2539 | int done, i, result_count; | |
2540 | int startflag = 1; | |
2541 | int result = 1; | |
2542 | int loopcount = 0; | |
2543 | static threadref nextthread; | |
2544 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2545 | ||
2546 | done = 0; | |
2547 | while (!done) | |
2548 | { | |
2549 | if (loopcount++ > looplimit) | |
2550 | { | |
2551 | result = 0; | |
8a3fe4f8 | 2552 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2553 | break; |
2554 | } | |
2555 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2556 | &done, &result_count, resultthreadlist)) | |
2557 | { | |
2558 | result = 0; | |
2559 | break; | |
2560 | } | |
23860348 | 2561 | /* Clear for later iterations. */ |
c906108c SS |
2562 | startflag = 0; |
2563 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2564 | if (result_count >= 1) | |
2565 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2566 | i = 0; | |
2567 | while (result_count--) | |
2568 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2569 | break; | |
2570 | } | |
2571 | return result; | |
2572 | } | |
2573 | ||
2574 | static int | |
fba45db2 | 2575 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2576 | { |
79d7f229 PA |
2577 | int pid = ptid_get_pid (inferior_ptid); |
2578 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2579 | |
2580 | if (!in_thread_list (ptid)) | |
2581 | add_thread (ptid); | |
c906108c SS |
2582 | return 1; /* continue iterator */ |
2583 | } | |
2584 | ||
2585 | #define CRAZY_MAX_THREADS 1000 | |
2586 | ||
39f77062 KB |
2587 | static ptid_t |
2588 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2589 | { |
d01949b6 | 2590 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2591 | |
2592 | putpkt ("qC"); | |
6d820c5c | 2593 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2594 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2595 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2596 | else |
2597 | return oldpid; | |
2598 | } | |
2599 | ||
802188a7 RM |
2600 | /* Find new threads for info threads command. |
2601 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2602 | */ |
cce74817 JM |
2603 | |
2604 | static void | |
fba45db2 | 2605 | remote_find_new_threads (void) |
c906108c | 2606 | { |
c5aa993b JM |
2607 | remote_threadlist_iterator (remote_newthread_step, 0, |
2608 | CRAZY_MAX_THREADS); | |
c906108c SS |
2609 | } |
2610 | ||
dc146f7c VP |
2611 | #if defined(HAVE_LIBEXPAT) |
2612 | ||
2613 | typedef struct thread_item | |
2614 | { | |
2615 | ptid_t ptid; | |
2616 | char *extra; | |
2617 | int core; | |
2618 | } thread_item_t; | |
2619 | DEF_VEC_O(thread_item_t); | |
2620 | ||
2621 | struct threads_parsing_context | |
2622 | { | |
2623 | VEC (thread_item_t) *items; | |
2624 | }; | |
2625 | ||
2626 | static void | |
2627 | start_thread (struct gdb_xml_parser *parser, | |
2628 | const struct gdb_xml_element *element, | |
2629 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2630 | { | |
2631 | struct threads_parsing_context *data = user_data; | |
2632 | ||
2633 | struct thread_item item; | |
2634 | char *id; | |
3d2c1d41 | 2635 | struct gdb_xml_value *attr; |
dc146f7c | 2636 | |
3d2c1d41 | 2637 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2638 | item.ptid = read_ptid (id, NULL); |
2639 | ||
3d2c1d41 PA |
2640 | attr = xml_find_attribute (attributes, "core"); |
2641 | if (attr != NULL) | |
2642 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2643 | else |
2644 | item.core = -1; | |
2645 | ||
2646 | item.extra = 0; | |
2647 | ||
2648 | VEC_safe_push (thread_item_t, data->items, &item); | |
2649 | } | |
2650 | ||
2651 | static void | |
2652 | end_thread (struct gdb_xml_parser *parser, | |
2653 | const struct gdb_xml_element *element, | |
2654 | void *user_data, const char *body_text) | |
2655 | { | |
2656 | struct threads_parsing_context *data = user_data; | |
2657 | ||
2658 | if (body_text && *body_text) | |
2ae2a0b7 | 2659 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2660 | } |
2661 | ||
2662 | const struct gdb_xml_attribute thread_attributes[] = { | |
2663 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2664 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2665 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2666 | }; | |
2667 | ||
2668 | const struct gdb_xml_element thread_children[] = { | |
2669 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2670 | }; | |
2671 | ||
2672 | const struct gdb_xml_element threads_children[] = { | |
2673 | { "thread", thread_attributes, thread_children, | |
2674 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2675 | start_thread, end_thread }, | |
2676 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2677 | }; | |
2678 | ||
2679 | const struct gdb_xml_element threads_elements[] = { | |
2680 | { "threads", NULL, threads_children, | |
2681 | GDB_XML_EF_NONE, NULL, NULL }, | |
2682 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2683 | }; | |
2684 | ||
02357a4a PA |
2685 | /* Discard the contents of the constructed thread info context. */ |
2686 | ||
2687 | static void | |
2688 | clear_threads_parsing_context (void *p) | |
2689 | { | |
2690 | struct threads_parsing_context *context = p; | |
2691 | int i; | |
2692 | struct thread_item *item; | |
2693 | ||
2694 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2695 | xfree (item->extra); | |
2696 | ||
2697 | VEC_free (thread_item_t, context->items); | |
2698 | } | |
2699 | ||
dc146f7c VP |
2700 | #endif |
2701 | ||
9d1f7ab2 MS |
2702 | /* |
2703 | * Find all threads for info threads command. | |
2704 | * Uses new thread protocol contributed by Cisco. | |
2705 | * Falls back and attempts to use the older method (above) | |
2706 | * if the target doesn't respond to the new method. | |
2707 | */ | |
2708 | ||
0f71a2f6 | 2709 | static void |
28439f5e | 2710 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2711 | { |
d01949b6 | 2712 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2713 | char *bufp; |
79d7f229 | 2714 | ptid_t new_thread; |
0f71a2f6 JM |
2715 | |
2716 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2717 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2718 | |
dc146f7c VP |
2719 | #if defined(HAVE_LIBEXPAT) |
2720 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2721 | { | |
2722 | char *xml = target_read_stralloc (¤t_target, | |
2723 | TARGET_OBJECT_THREADS, NULL); | |
2724 | ||
2725 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2726 | |
dc146f7c VP |
2727 | if (xml && *xml) |
2728 | { | |
dc146f7c | 2729 | struct threads_parsing_context context; |
dc146f7c | 2730 | |
efc0eabd PA |
2731 | context.items = NULL; |
2732 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2733 | |
efc0eabd PA |
2734 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2735 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2736 | { |
2737 | int i; | |
2738 | struct thread_item *item; | |
2739 | ||
3e43a32a MS |
2740 | for (i = 0; |
2741 | VEC_iterate (thread_item_t, context.items, i, item); | |
2742 | ++i) | |
dc146f7c VP |
2743 | { |
2744 | if (!ptid_equal (item->ptid, null_ptid)) | |
2745 | { | |
2746 | struct private_thread_info *info; | |
2747 | /* In non-stop mode, we assume new found threads | |
2748 | are running until proven otherwise with a | |
2749 | stop reply. In all-stop, we can only get | |
2750 | here if all threads are stopped. */ | |
2751 | int running = non_stop ? 1 : 0; | |
2752 | ||
2753 | remote_notice_new_inferior (item->ptid, running); | |
2754 | ||
2755 | info = demand_private_info (item->ptid); | |
2756 | info->core = item->core; | |
2757 | info->extra = item->extra; | |
02357a4a | 2758 | item->extra = NULL; |
dc146f7c | 2759 | } |
dc146f7c VP |
2760 | } |
2761 | } | |
dc146f7c VP |
2762 | } |
2763 | ||
2764 | do_cleanups (back_to); | |
2765 | return; | |
2766 | } | |
2767 | #endif | |
2768 | ||
9d1f7ab2 MS |
2769 | if (use_threadinfo_query) |
2770 | { | |
2771 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2772 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2773 | bufp = rs->buf; |
9d1f7ab2 | 2774 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2775 | { |
9d1f7ab2 MS |
2776 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2777 | { | |
2778 | do | |
2779 | { | |
82f73884 | 2780 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2781 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2782 | { |
74531fed | 2783 | /* In non-stop mode, we assume new found threads |
1941c569 | 2784 | are running until proven otherwise with a |
74531fed PA |
2785 | stop reply. In all-stop, we can only get |
2786 | here if all threads are stopped. */ | |
1941c569 PA |
2787 | int running = non_stop ? 1 : 0; |
2788 | ||
2789 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2790 | } |
9d1f7ab2 MS |
2791 | } |
2792 | while (*bufp++ == ','); /* comma-separated list */ | |
2793 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2794 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2795 | bufp = rs->buf; |
9d1f7ab2 MS |
2796 | } |
2797 | return; /* done */ | |
2798 | } | |
2799 | } | |
2800 | ||
74531fed PA |
2801 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2802 | if (non_stop) | |
2803 | return; | |
2804 | ||
23860348 | 2805 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2806 | use_threadinfo_query = 0; |
2807 | remote_find_new_threads (); | |
2808 | return; | |
2809 | } | |
2810 | ||
802188a7 | 2811 | /* |
9d1f7ab2 MS |
2812 | * Collect a descriptive string about the given thread. |
2813 | * The target may say anything it wants to about the thread | |
2814 | * (typically info about its blocked / runnable state, name, etc.). | |
2815 | * This string will appear in the info threads display. | |
802188a7 | 2816 | * |
9d1f7ab2 MS |
2817 | * Optional: targets are not required to implement this function. |
2818 | */ | |
2819 | ||
2820 | static char * | |
2821 | remote_threads_extra_info (struct thread_info *tp) | |
2822 | { | |
d01949b6 | 2823 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2824 | int result; |
2825 | int set; | |
2826 | threadref id; | |
2827 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2828 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2829 | int n = 0; /* position in display_buf */ |
2830 | ||
2831 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2832 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2833 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2834 | |
60e569b9 PA |
2835 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2836 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2837 | /* This is the main thread which was added by GDB. The remote | |
2838 | server doesn't know about it. */ | |
2839 | return NULL; | |
2840 | ||
dc146f7c VP |
2841 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2842 | { | |
2843 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2844 | |
dc146f7c VP |
2845 | if (info && info->private) |
2846 | return info->private->extra; | |
2847 | else | |
2848 | return NULL; | |
2849 | } | |
2850 | ||
9d1f7ab2 MS |
2851 | if (use_threadextra_query) |
2852 | { | |
82f73884 PA |
2853 | char *b = rs->buf; |
2854 | char *endb = rs->buf + get_remote_packet_size (); | |
2855 | ||
2856 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2857 | b += strlen (b); | |
2858 | write_ptid (b, endb, tp->ptid); | |
2859 | ||
2e9f7625 | 2860 | putpkt (rs->buf); |
6d820c5c | 2861 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2862 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2863 | { |
2e9f7625 DJ |
2864 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2865 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2866 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2867 | return display_buf; |
2868 | } | |
0f71a2f6 | 2869 | } |
9d1f7ab2 MS |
2870 | |
2871 | /* If the above query fails, fall back to the old method. */ | |
2872 | use_threadextra_query = 0; | |
2873 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2874 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2875 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2876 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2877 | if (threadinfo.active) | |
0f71a2f6 | 2878 | { |
9d1f7ab2 | 2879 | if (*threadinfo.shortname) |
2bc416ba | 2880 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2881 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2882 | if (*threadinfo.display) |
2bc416ba | 2883 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2884 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2885 | if (*threadinfo.more_display) |
2bc416ba | 2886 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2887 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2888 | |
2889 | if (n > 0) | |
c5aa993b | 2890 | { |
23860348 | 2891 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2892 | if (',' == display_buf[n-1]) |
2893 | display_buf[n-1] = ' '; | |
2894 | return display_buf; | |
c5aa993b | 2895 | } |
0f71a2f6 | 2896 | } |
9d1f7ab2 | 2897 | return NULL; |
0f71a2f6 | 2898 | } |
c906108c | 2899 | \f |
c5aa993b | 2900 | |
0fb4aa4b PA |
2901 | static int |
2902 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2903 | struct static_tracepoint_marker *marker) | |
2904 | { | |
2905 | struct remote_state *rs = get_remote_state (); | |
2906 | char *p = rs->buf; | |
2907 | ||
bba74b36 | 2908 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
2909 | p += strlen (p); |
2910 | p += hexnumstr (p, addr); | |
2911 | putpkt (rs->buf); | |
2912 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2913 | p = rs->buf; | |
2914 | ||
2915 | if (*p == 'E') | |
2916 | error (_("Remote failure reply: %s"), p); | |
2917 | ||
2918 | if (*p++ == 'm') | |
2919 | { | |
2920 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2921 | return 1; | |
2922 | } | |
2923 | ||
2924 | return 0; | |
2925 | } | |
2926 | ||
0fb4aa4b PA |
2927 | static VEC(static_tracepoint_marker_p) * |
2928 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2929 | { | |
2930 | struct remote_state *rs = get_remote_state (); | |
2931 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2932 | struct static_tracepoint_marker *marker = NULL; | |
2933 | struct cleanup *old_chain; | |
2934 | char *p; | |
2935 | ||
2936 | /* Ask for a first packet of static tracepoint marker | |
2937 | definition. */ | |
2938 | putpkt ("qTfSTM"); | |
2939 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2940 | p = rs->buf; | |
2941 | if (*p == 'E') | |
2942 | error (_("Remote failure reply: %s"), p); | |
2943 | ||
2944 | old_chain = make_cleanup (free_current_marker, &marker); | |
2945 | ||
2946 | while (*p++ == 'm') | |
2947 | { | |
2948 | if (marker == NULL) | |
2949 | marker = XCNEW (struct static_tracepoint_marker); | |
2950 | ||
2951 | do | |
2952 | { | |
2953 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2954 | ||
2955 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2956 | { | |
2957 | VEC_safe_push (static_tracepoint_marker_p, | |
2958 | markers, marker); | |
2959 | marker = NULL; | |
2960 | } | |
2961 | else | |
2962 | { | |
2963 | release_static_tracepoint_marker (marker); | |
2964 | memset (marker, 0, sizeof (*marker)); | |
2965 | } | |
2966 | } | |
2967 | while (*p++ == ','); /* comma-separated list */ | |
2968 | /* Ask for another packet of static tracepoint definition. */ | |
2969 | putpkt ("qTsSTM"); | |
2970 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2971 | p = rs->buf; | |
2972 | } | |
2973 | ||
2974 | do_cleanups (old_chain); | |
2975 | return markers; | |
2976 | } | |
2977 | ||
2978 | \f | |
10760264 JB |
2979 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2980 | ||
2981 | static ptid_t | |
2982 | remote_get_ada_task_ptid (long lwp, long thread) | |
2983 | { | |
2984 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2985 | } | |
2986 | \f | |
2987 | ||
24b06219 | 2988 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2989 | |
2990 | static void | |
fba45db2 | 2991 | extended_remote_restart (void) |
c906108c | 2992 | { |
d01949b6 | 2993 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2994 | |
2995 | /* Send the restart command; for reasons I don't understand the | |
2996 | remote side really expects a number after the "R". */ | |
ea9c271d | 2997 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2998 | putpkt (rs->buf); |
c906108c | 2999 | |
ad9a8f3f | 3000 | remote_fileio_reset (); |
c906108c SS |
3001 | } |
3002 | \f | |
3003 | /* Clean up connection to a remote debugger. */ | |
3004 | ||
c906108c | 3005 | static void |
fba45db2 | 3006 | remote_close (int quitting) |
c906108c | 3007 | { |
d3fd5342 PA |
3008 | if (remote_desc == NULL) |
3009 | return; /* already closed */ | |
3010 | ||
3011 | /* Make sure we leave stdin registered in the event loop, and we | |
3012 | don't leave the async SIGINT signal handler installed. */ | |
3013 | remote_terminal_ours (); | |
ce5ce7ed | 3014 | |
d3fd5342 PA |
3015 | serial_close (remote_desc); |
3016 | remote_desc = NULL; | |
ce5ce7ed PA |
3017 | |
3018 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
3019 | of all the inferiors and their threads we were controlling. |
3020 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
3021 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 3022 | inferior_ptid = null_ptid; |
f67fd822 | 3023 | discard_all_inferiors (); |
ce5ce7ed | 3024 | |
74531fed PA |
3025 | /* We're no longer interested in any of these events. */ |
3026 | discard_pending_stop_replies (-1); | |
3027 | ||
3028 | if (remote_async_inferior_event_token) | |
3029 | delete_async_event_handler (&remote_async_inferior_event_token); | |
3030 | if (remote_async_get_pending_events_token) | |
3031 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
3032 | } |
3033 | ||
23860348 | 3034 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
3035 | |
3036 | static void | |
fba45db2 | 3037 | get_offsets (void) |
c906108c | 3038 | { |
d01949b6 | 3039 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3040 | char *buf; |
085dd6e6 | 3041 | char *ptr; |
31d99776 DJ |
3042 | int lose, num_segments = 0, do_sections, do_segments; |
3043 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 3044 | struct section_offsets *offs; |
31d99776 DJ |
3045 | struct symfile_segment_data *data; |
3046 | ||
3047 | if (symfile_objfile == NULL) | |
3048 | return; | |
c906108c SS |
3049 | |
3050 | putpkt ("qOffsets"); | |
6d820c5c | 3051 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3052 | buf = rs->buf; |
c906108c SS |
3053 | |
3054 | if (buf[0] == '\000') | |
3055 | return; /* Return silently. Stub doesn't support | |
23860348 | 3056 | this command. */ |
c906108c SS |
3057 | if (buf[0] == 'E') |
3058 | { | |
8a3fe4f8 | 3059 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
3060 | return; |
3061 | } | |
3062 | ||
3063 | /* Pick up each field in turn. This used to be done with scanf, but | |
3064 | scanf will make trouble if CORE_ADDR size doesn't match | |
3065 | conversion directives correctly. The following code will work | |
3066 | with any size of CORE_ADDR. */ | |
3067 | text_addr = data_addr = bss_addr = 0; | |
3068 | ptr = buf; | |
3069 | lose = 0; | |
3070 | ||
3071 | if (strncmp (ptr, "Text=", 5) == 0) | |
3072 | { | |
3073 | ptr += 5; | |
3074 | /* Don't use strtol, could lose on big values. */ | |
3075 | while (*ptr && *ptr != ';') | |
3076 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3077 | |
31d99776 DJ |
3078 | if (strncmp (ptr, ";Data=", 6) == 0) |
3079 | { | |
3080 | ptr += 6; | |
3081 | while (*ptr && *ptr != ';') | |
3082 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3083 | } | |
3084 | else | |
3085 | lose = 1; | |
3086 | ||
3087 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3088 | { | |
3089 | ptr += 5; | |
3090 | while (*ptr && *ptr != ';') | |
3091 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3092 | |
31d99776 DJ |
3093 | if (bss_addr != data_addr) |
3094 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3095 | } | |
3096 | else | |
3097 | lose = 1; | |
3098 | } | |
3099 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3100 | { |
31d99776 DJ |
3101 | ptr += 8; |
3102 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3103 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3104 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3105 | num_segments = 1; | |
3106 | ||
3107 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3108 | { | |
3109 | ptr += 9; | |
3110 | while (*ptr && *ptr != ';') | |
3111 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3112 | num_segments++; | |
3113 | } | |
c906108c SS |
3114 | } |
3115 | else | |
3116 | lose = 1; | |
3117 | ||
3118 | if (lose) | |
8a3fe4f8 | 3119 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3120 | else if (*ptr != '\0') |
3121 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3122 | |
802188a7 | 3123 | offs = ((struct section_offsets *) |
a39a16c4 | 3124 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3125 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3126 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3127 | |
31d99776 DJ |
3128 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3129 | do_segments = (data != NULL); | |
3130 | do_sections = num_segments == 0; | |
c906108c | 3131 | |
28c32713 | 3132 | if (num_segments > 0) |
31d99776 | 3133 | { |
31d99776 DJ |
3134 | segments[0] = text_addr; |
3135 | segments[1] = data_addr; | |
3136 | } | |
28c32713 JB |
3137 | /* If we have two segments, we can still try to relocate everything |
3138 | by assuming that the .text and .data offsets apply to the whole | |
3139 | text and data segments. Convert the offsets given in the packet | |
3140 | to base addresses for symfile_map_offsets_to_segments. */ | |
3141 | else if (data && data->num_segments == 2) | |
3142 | { | |
3143 | segments[0] = data->segment_bases[0] + text_addr; | |
3144 | segments[1] = data->segment_bases[1] + data_addr; | |
3145 | num_segments = 2; | |
3146 | } | |
8d385431 DJ |
3147 | /* If the object file has only one segment, assume that it is text |
3148 | rather than data; main programs with no writable data are rare, | |
3149 | but programs with no code are useless. Of course the code might | |
3150 | have ended up in the data segment... to detect that we would need | |
3151 | the permissions here. */ | |
3152 | else if (data && data->num_segments == 1) | |
3153 | { | |
3154 | segments[0] = data->segment_bases[0] + text_addr; | |
3155 | num_segments = 1; | |
3156 | } | |
28c32713 JB |
3157 | /* There's no way to relocate by segment. */ |
3158 | else | |
3159 | do_segments = 0; | |
31d99776 DJ |
3160 | |
3161 | if (do_segments) | |
3162 | { | |
3163 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3164 | offs, num_segments, segments); | |
3165 | ||
3166 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3167 | error (_("Can not handle qOffsets TextSeg " |
3168 | "response with this symbol file")); | |
31d99776 DJ |
3169 | |
3170 | if (ret > 0) | |
3171 | do_sections = 0; | |
3172 | } | |
c906108c | 3173 | |
9ef895d6 DJ |
3174 | if (data) |
3175 | free_symfile_segment_data (data); | |
31d99776 DJ |
3176 | |
3177 | if (do_sections) | |
3178 | { | |
3179 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3180 | ||
3e43a32a MS |
3181 | /* This is a temporary kludge to force data and bss to use the |
3182 | same offsets because that's what nlmconv does now. The real | |
3183 | solution requires changes to the stub and remote.c that I | |
3184 | don't have time to do right now. */ | |
31d99776 DJ |
3185 | |
3186 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3187 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3188 | } | |
c906108c SS |
3189 | |
3190 | objfile_relocate (symfile_objfile, offs); | |
3191 | } | |
3192 | ||
74531fed PA |
3193 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3194 | threads we know are stopped already. This is used during the | |
3195 | initial remote connection in non-stop mode --- threads that are | |
3196 | reported as already being stopped are left stopped. */ | |
3197 | ||
3198 | static int | |
3199 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3200 | { | |
3201 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3202 | if (peek_stop_reply (thread->ptid)) | |
3203 | set_stop_requested (thread->ptid, 1); | |
3204 | ||
3205 | return 0; | |
3206 | } | |
3207 | ||
9a7071a8 JB |
3208 | /* Send interrupt_sequence to remote target. */ |
3209 | static void | |
eeae04df | 3210 | send_interrupt_sequence (void) |
9a7071a8 JB |
3211 | { |
3212 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3213 | serial_write (remote_desc, "\x03", 1); | |
3214 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3215 | serial_send_break (remote_desc); | |
3216 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3217 | { | |
3218 | serial_send_break (remote_desc); | |
3219 | serial_write (remote_desc, "g", 1); | |
3220 | } | |
3221 | else | |
3222 | internal_error (__FILE__, __LINE__, | |
3223 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3224 | interrupt_sequence_mode); | |
3225 | } | |
3226 | ||
49c62f2e PA |
3227 | /* Query the remote target for which is the current thread/process, |
3228 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3229 | responsible for setting the state such that the remote end is ready | |
3230 | to return the current thread. */ | |
3231 | ||
3232 | static void | |
3233 | add_current_inferior_and_thread (void) | |
3234 | { | |
3235 | struct remote_state *rs = get_remote_state (); | |
3236 | int fake_pid_p = 0; | |
3237 | ptid_t ptid; | |
3238 | ||
3239 | inferior_ptid = null_ptid; | |
3240 | ||
3241 | /* Now, if we have thread information, update inferior_ptid. */ | |
3242 | ptid = remote_current_thread (inferior_ptid); | |
3243 | if (!ptid_equal (ptid, null_ptid)) | |
3244 | { | |
3245 | if (!remote_multi_process_p (rs)) | |
3246 | fake_pid_p = 1; | |
3247 | ||
3248 | inferior_ptid = ptid; | |
3249 | } | |
3250 | else | |
3251 | { | |
3252 | /* Without this, some commands which require an active target | |
3253 | (such as kill) won't work. This variable serves (at least) | |
3254 | double duty as both the pid of the target process (if it has | |
3255 | such), and as a flag indicating that a target is active. */ | |
3256 | inferior_ptid = magic_null_ptid; | |
3257 | fake_pid_p = 1; | |
3258 | } | |
3259 | ||
3260 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3261 | ||
3262 | /* Add the main thread. */ | |
3263 | add_thread_silent (inferior_ptid); | |
3264 | } | |
3265 | ||
9cbc821d | 3266 | static void |
04bd08de | 3267 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3268 | { |
c8d104ad PA |
3269 | struct remote_state *rs = get_remote_state (); |
3270 | struct packet_config *noack_config; | |
2d717e4f | 3271 | char *wait_status = NULL; |
8621d6a9 | 3272 | |
23860348 | 3273 | immediate_quit++; /* Allow user to interrupt it. */ |
522002f9 | 3274 | QUIT; |
c906108c | 3275 | |
9a7071a8 JB |
3276 | if (interrupt_on_connect) |
3277 | send_interrupt_sequence (); | |
3278 | ||
57e12211 TT |
3279 | /* Ack any packet which the remote side has already sent. */ |
3280 | serial_write (remote_desc, "+", 1); | |
3281 | ||
1e51243a PA |
3282 | /* Signal other parts that we're going through the initial setup, |
3283 | and so things may not be stable yet. */ | |
3284 | rs->starting_up = 1; | |
3285 | ||
c8d104ad PA |
3286 | /* The first packet we send to the target is the optional "supported |
3287 | packets" request. If the target can answer this, it will tell us | |
3288 | which later probes to skip. */ | |
3289 | remote_query_supported (); | |
3290 | ||
d914c394 SS |
3291 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3292 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3293 | remote_set_permissions (); | |
3294 | ||
c8d104ad PA |
3295 | /* Next, we possibly activate noack mode. |
3296 | ||
3297 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3298 | enable noack mode if the stub reported a wish for it with | |
3299 | qSupported. | |
3300 | ||
3301 | If set to TRUE, then enable noack mode even if the stub didn't | |
3302 | report it in qSupported. If the stub doesn't reply OK, the | |
3303 | session ends with an error. | |
3304 | ||
3305 | If FALSE, then don't activate noack mode, regardless of what the | |
3306 | stub claimed should be the default with qSupported. */ | |
3307 | ||
3308 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3309 | ||
3310 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3311 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3312 | && noack_config->support == PACKET_ENABLE)) | |
3313 | { | |
3314 | putpkt ("QStartNoAckMode"); | |
3315 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3316 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3317 | rs->noack_mode = 1; | |
3318 | } | |
3319 | ||
04bd08de | 3320 | if (extended_p) |
5fe04517 PA |
3321 | { |
3322 | /* Tell the remote that we are using the extended protocol. */ | |
3323 | putpkt ("!"); | |
3324 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3325 | } | |
3326 | ||
9b224c5e PA |
3327 | /* Let the target know which signals it is allowed to pass down to |
3328 | the program. */ | |
3329 | update_signals_program_target (); | |
3330 | ||
d962ef82 DJ |
3331 | /* Next, if the target can specify a description, read it. We do |
3332 | this before anything involving memory or registers. */ | |
3333 | target_find_description (); | |
3334 | ||
6c95b8df PA |
3335 | /* Next, now that we know something about the target, update the |
3336 | address spaces in the program spaces. */ | |
3337 | update_address_spaces (); | |
3338 | ||
50c71eaf PA |
3339 | /* On OSs where the list of libraries is global to all |
3340 | processes, we fetch them early. */ | |
3341 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3342 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3343 | |
74531fed PA |
3344 | if (non_stop) |
3345 | { | |
3346 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3347 | error (_("Non-stop mode requested, but remote " |
3348 | "does not support non-stop")); | |
74531fed PA |
3349 | |
3350 | putpkt ("QNonStop:1"); | |
3351 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3352 | ||
3353 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3354 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3355 | |
3356 | /* Find about threads and processes the stub is already | |
3357 | controlling. We default to adding them in the running state. | |
3358 | The '?' query below will then tell us about which threads are | |
3359 | stopped. */ | |
04bd08de | 3360 | remote_threads_info (target); |
74531fed PA |
3361 | } |
3362 | else if (rs->non_stop_aware) | |
3363 | { | |
3364 | /* Don't assume that the stub can operate in all-stop mode. | |
3365 | Request it explicitely. */ | |
3366 | putpkt ("QNonStop:0"); | |
3367 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3368 | ||
3369 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3370 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3371 | } |
3372 | ||
2d717e4f DJ |
3373 | /* Check whether the target is running now. */ |
3374 | putpkt ("?"); | |
3375 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3376 | ||
74531fed | 3377 | if (!non_stop) |
2d717e4f | 3378 | { |
e714e1bf UW |
3379 | ptid_t ptid; |
3380 | int fake_pid_p = 0; | |
3381 | struct inferior *inf; | |
3382 | ||
74531fed | 3383 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3384 | { |
04bd08de | 3385 | if (!extended_p) |
74531fed | 3386 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3387 | |
3388 | /* We're connected, but not running. Drop out before we | |
3389 | call start_remote. */ | |
e278ad5b | 3390 | rs->starting_up = 0; |
c35b1492 | 3391 | return; |
2d717e4f DJ |
3392 | } |
3393 | else | |
74531fed | 3394 | { |
74531fed PA |
3395 | /* Save the reply for later. */ |
3396 | wait_status = alloca (strlen (rs->buf) + 1); | |
3397 | strcpy (wait_status, rs->buf); | |
3398 | } | |
3399 | ||
3400 | /* Let the stub know that we want it to return the thread. */ | |
3401 | set_continue_thread (minus_one_ptid); | |
3402 | ||
49c62f2e | 3403 | add_current_inferior_and_thread (); |
74531fed | 3404 | |
6e586cc5 YQ |
3405 | /* init_wait_for_inferior should be called before get_offsets in order |
3406 | to manage `inserted' flag in bp loc in a correct state. | |
3407 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3408 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3409 | start_remote, set `inserted' flag to 1. In the initialization of | |
3410 | inferior, breakpoint_init_inferior should be called first, and then | |
3411 | breakpoint_re_set can be called. If this order is broken, state of | |
3412 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3413 | manipulation. */ | |
3414 | init_wait_for_inferior (); | |
3415 | ||
74531fed PA |
3416 | get_offsets (); /* Get text, data & bss offsets. */ |
3417 | ||
d962ef82 DJ |
3418 | /* If we could not find a description using qXfer, and we know |
3419 | how to do it some other way, try again. This is not | |
3420 | supported for non-stop; it could be, but it is tricky if | |
3421 | there are no stopped threads when we connect. */ | |
04bd08de | 3422 | if (remote_read_description_p (target) |
d962ef82 DJ |
3423 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3424 | { | |
3425 | target_clear_description (); | |
3426 | target_find_description (); | |
3427 | } | |
3428 | ||
74531fed PA |
3429 | /* Use the previously fetched status. */ |
3430 | gdb_assert (wait_status != NULL); | |
3431 | strcpy (rs->buf, wait_status); | |
3432 | rs->cached_wait_status = 1; | |
3433 | ||
3434 | immediate_quit--; | |
04bd08de | 3435 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3436 | } |
3437 | else | |
3438 | { | |
68c97600 PA |
3439 | /* Clear WFI global state. Do this before finding about new |
3440 | threads and inferiors, and setting the current inferior. | |
3441 | Otherwise we would clear the proceed status of the current | |
3442 | inferior when we want its stop_soon state to be preserved | |
3443 | (see notice_new_inferior). */ | |
3444 | init_wait_for_inferior (); | |
3445 | ||
74531fed PA |
3446 | /* In non-stop, we will either get an "OK", meaning that there |
3447 | are no stopped threads at this time; or, a regular stop | |
3448 | reply. In the latter case, there may be more than one thread | |
3449 | stopped --- we pull them all out using the vStopped | |
3450 | mechanism. */ | |
3451 | if (strcmp (rs->buf, "OK") != 0) | |
3452 | { | |
3453 | struct stop_reply *stop_reply; | |
3454 | struct cleanup *old_chain; | |
2d717e4f | 3455 | |
74531fed PA |
3456 | stop_reply = stop_reply_xmalloc (); |
3457 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3458 | |
74531fed PA |
3459 | remote_parse_stop_reply (rs->buf, stop_reply); |
3460 | discard_cleanups (old_chain); | |
c0a2216e | 3461 | |
74531fed PA |
3462 | /* get_pending_stop_replies acks this one, and gets the rest |
3463 | out. */ | |
3464 | pending_stop_reply = stop_reply; | |
3465 | remote_get_pending_stop_replies (); | |
c906108c | 3466 | |
74531fed PA |
3467 | /* Make sure that threads that were stopped remain |
3468 | stopped. */ | |
3469 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3470 | } | |
2d717e4f | 3471 | |
74531fed PA |
3472 | if (target_can_async_p ()) |
3473 | target_async (inferior_event_handler, 0); | |
c906108c | 3474 | |
74531fed PA |
3475 | if (thread_count () == 0) |
3476 | { | |
04bd08de | 3477 | if (!extended_p) |
74531fed | 3478 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3479 | |
c35b1492 PA |
3480 | /* We're connected, but not running. Drop out before we |
3481 | call start_remote. */ | |
e278ad5b | 3482 | rs->starting_up = 0; |
c35b1492 PA |
3483 | return; |
3484 | } | |
74531fed PA |
3485 | |
3486 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3487 | |
74531fed PA |
3488 | /* Force the stub to choose a thread. */ |
3489 | set_general_thread (null_ptid); | |
c906108c | 3490 | |
74531fed PA |
3491 | /* Query it. */ |
3492 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3493 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3494 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3495 | |
74531fed PA |
3496 | get_offsets (); /* Get text, data & bss offsets. */ |
3497 | ||
3498 | /* In non-stop mode, any cached wait status will be stored in | |
3499 | the stop reply queue. */ | |
3500 | gdb_assert (wait_status == NULL); | |
f0223081 | 3501 | |
2455069d UW |
3502 | /* Report all signals during attach/startup. */ |
3503 | remote_pass_signals (0, NULL); | |
74531fed | 3504 | } |
c8d104ad | 3505 | |
c8d104ad PA |
3506 | /* If we connected to a live target, do some additional setup. */ |
3507 | if (target_has_execution) | |
3508 | { | |
3509 | if (exec_bfd) /* No use without an exec file. */ | |
3510 | remote_check_symbols (symfile_objfile); | |
3511 | } | |
50c71eaf | 3512 | |
d5551862 SS |
3513 | /* Possibly the target has been engaged in a trace run started |
3514 | previously; find out where things are at. */ | |
26afc0d7 | 3515 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3516 | { |
00bf0b85 SS |
3517 | struct uploaded_tp *uploaded_tps = NULL; |
3518 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3519 | ||
00bf0b85 SS |
3520 | if (current_trace_status ()->running) |
3521 | printf_filtered (_("Trace is already running on the target.\n")); | |
3522 | ||
3523 | /* Get trace state variables first, they may be checked when | |
3524 | parsing uploaded commands. */ | |
3525 | ||
3526 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3527 | ||
3528 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3529 | ||
3530 | remote_upload_tracepoints (&uploaded_tps); | |
3531 | ||
3532 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3533 | } |
3534 | ||
1e51243a PA |
3535 | /* The thread and inferior lists are now synchronized with the |
3536 | target, our symbols have been relocated, and we're merged the | |
3537 | target's tracepoints with ours. We're done with basic start | |
3538 | up. */ | |
3539 | rs->starting_up = 0; | |
3540 | ||
2567c7d9 PA |
3541 | /* If breakpoints are global, insert them now. */ |
3542 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3543 | && breakpoints_always_inserted_mode ()) |
3544 | insert_breakpoints (); | |
c906108c SS |
3545 | } |
3546 | ||
3547 | /* Open a connection to a remote debugger. | |
3548 | NAME is the filename used for communication. */ | |
3549 | ||
3550 | static void | |
fba45db2 | 3551 | remote_open (char *name, int from_tty) |
c906108c | 3552 | { |
75c99385 | 3553 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3554 | } |
3555 | ||
c906108c SS |
3556 | /* Open a connection to a remote debugger using the extended |
3557 | remote gdb protocol. NAME is the filename used for communication. */ | |
3558 | ||
3559 | static void | |
fba45db2 | 3560 | extended_remote_open (char *name, int from_tty) |
c906108c | 3561 | { |
75c99385 | 3562 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3563 | } |
3564 | ||
c906108c SS |
3565 | /* Generic code for opening a connection to a remote target. */ |
3566 | ||
d471ea57 AC |
3567 | static void |
3568 | init_all_packet_configs (void) | |
3569 | { | |
3570 | int i; | |
a744cf53 | 3571 | |
444abaca DJ |
3572 | for (i = 0; i < PACKET_MAX; i++) |
3573 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3574 | } |
3575 | ||
23860348 | 3576 | /* Symbol look-up. */ |
dc8acb97 MS |
3577 | |
3578 | static void | |
3579 | remote_check_symbols (struct objfile *objfile) | |
3580 | { | |
d01949b6 | 3581 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3582 | char *msg, *reply, *tmp; |
3583 | struct minimal_symbol *sym; | |
3584 | int end; | |
3585 | ||
63154eca PA |
3586 | /* The remote side has no concept of inferiors that aren't running |
3587 | yet, it only knows about running processes. If we're connected | |
3588 | but our current inferior is not running, we should not invite the | |
3589 | remote target to request symbol lookups related to its | |
3590 | (unrelated) current process. */ | |
3591 | if (!target_has_execution) | |
3592 | return; | |
3593 | ||
444abaca | 3594 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3595 | return; |
3596 | ||
63154eca PA |
3597 | /* Make sure the remote is pointing at the right process. Note |
3598 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3599 | set_general_process (); |
3600 | ||
6d820c5c DJ |
3601 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3602 | because we need both at the same time. */ | |
ea9c271d | 3603 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3604 | |
23860348 | 3605 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3606 | |
3607 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3608 | getpkt (&rs->buf, &rs->buf_size, 0); |
3609 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3610 | reply = rs->buf; |
dc8acb97 MS |
3611 | |
3612 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3613 | { | |
3614 | tmp = &reply[8]; | |
cfd77fa1 | 3615 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3616 | msg[end] = '\0'; |
3617 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3618 | if (sym == NULL) | |
ea9c271d | 3619 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3620 | else |
2bbe3cc1 | 3621 | { |
5af949e3 | 3622 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3623 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3624 | ||
3625 | /* If this is a function address, return the start of code | |
3626 | instead of any data function descriptor. */ | |
1cf3db46 | 3627 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3628 | sym_addr, |
3629 | ¤t_target); | |
3630 | ||
3631 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3632 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3633 | } |
3634 | ||
dc8acb97 | 3635 | putpkt (msg); |
6d820c5c | 3636 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3637 | reply = rs->buf; |
dc8acb97 MS |
3638 | } |
3639 | } | |
3640 | ||
9db8d71f DJ |
3641 | static struct serial * |
3642 | remote_serial_open (char *name) | |
3643 | { | |
3644 | static int udp_warning = 0; | |
3645 | ||
3646 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3647 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3648 | serial connection is reliable and not the serial connection promising | |
3649 | to be. */ | |
3650 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3651 | { | |
3e43a32a MS |
3652 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3653 | "Some events may be lost, rendering further debugging " | |
3654 | "impossible.")); | |
9db8d71f DJ |
3655 | udp_warning = 1; |
3656 | } | |
3657 | ||
3658 | return serial_open (name); | |
3659 | } | |
3660 | ||
d914c394 SS |
3661 | /* Inform the target of our permission settings. The permission flags |
3662 | work without this, but if the target knows the settings, it can do | |
3663 | a couple things. First, it can add its own check, to catch cases | |
3664 | that somehow manage to get by the permissions checks in target | |
3665 | methods. Second, if the target is wired to disallow particular | |
3666 | settings (for instance, a system in the field that is not set up to | |
3667 | be able to stop at a breakpoint), it can object to any unavailable | |
3668 | permissions. */ | |
3669 | ||
3670 | void | |
3671 | remote_set_permissions (void) | |
3672 | { | |
3673 | struct remote_state *rs = get_remote_state (); | |
3674 | ||
bba74b36 YQ |
3675 | xsnprintf (rs->buf, get_remote_packet_size (), "QAllow:" |
3676 | "WriteReg:%x;WriteMem:%x;" | |
3677 | "InsertBreak:%x;InsertTrace:%x;" | |
3678 | "InsertFastTrace:%x;Stop:%x", | |
3679 | may_write_registers, may_write_memory, | |
3680 | may_insert_breakpoints, may_insert_tracepoints, | |
3681 | may_insert_fast_tracepoints, may_stop); | |
d914c394 SS |
3682 | putpkt (rs->buf); |
3683 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3684 | ||
3685 | /* If the target didn't like the packet, warn the user. Do not try | |
3686 | to undo the user's settings, that would just be maddening. */ | |
3687 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3688 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3689 | } |
3690 | ||
be2a5f71 DJ |
3691 | /* This type describes each known response to the qSupported |
3692 | packet. */ | |
3693 | struct protocol_feature | |
3694 | { | |
3695 | /* The name of this protocol feature. */ | |
3696 | const char *name; | |
3697 | ||
3698 | /* The default for this protocol feature. */ | |
3699 | enum packet_support default_support; | |
3700 | ||
3701 | /* The function to call when this feature is reported, or after | |
3702 | qSupported processing if the feature is not supported. | |
3703 | The first argument points to this structure. The second | |
3704 | argument indicates whether the packet requested support be | |
3705 | enabled, disabled, or probed (or the default, if this function | |
3706 | is being called at the end of processing and this feature was | |
3707 | not reported). The third argument may be NULL; if not NULL, it | |
3708 | is a NUL-terminated string taken from the packet following | |
3709 | this feature's name and an equals sign. */ | |
3710 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3711 | const char *); | |
3712 | ||
3713 | /* The corresponding packet for this feature. Only used if | |
3714 | FUNC is remote_supported_packet. */ | |
3715 | int packet; | |
3716 | }; | |
3717 | ||
be2a5f71 DJ |
3718 | static void |
3719 | remote_supported_packet (const struct protocol_feature *feature, | |
3720 | enum packet_support support, | |
3721 | const char *argument) | |
3722 | { | |
3723 | if (argument) | |
3724 | { | |
3725 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3726 | " \"%s\"."), feature->name); | |
3727 | return; | |
3728 | } | |
3729 | ||
3730 | if (remote_protocol_packets[feature->packet].support | |
3731 | == PACKET_SUPPORT_UNKNOWN) | |
3732 | remote_protocol_packets[feature->packet].support = support; | |
3733 | } | |
be2a5f71 DJ |
3734 | |
3735 | static void | |
3736 | remote_packet_size (const struct protocol_feature *feature, | |
3737 | enum packet_support support, const char *value) | |
3738 | { | |
3739 | struct remote_state *rs = get_remote_state (); | |
3740 | ||
3741 | int packet_size; | |
3742 | char *value_end; | |
3743 | ||
3744 | if (support != PACKET_ENABLE) | |
3745 | return; | |
3746 | ||
3747 | if (value == NULL || *value == '\0') | |
3748 | { | |
3749 | warning (_("Remote target reported \"%s\" without a size."), | |
3750 | feature->name); | |
3751 | return; | |
3752 | } | |
3753 | ||
3754 | errno = 0; | |
3755 | packet_size = strtol (value, &value_end, 16); | |
3756 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3757 | { | |
3758 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3759 | feature->name, value); | |
3760 | return; | |
3761 | } | |
3762 | ||
3763 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3764 | { | |
3765 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3766 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3767 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3768 | } | |
3769 | ||
3770 | /* Record the new maximum packet size. */ | |
3771 | rs->explicit_packet_size = packet_size; | |
3772 | } | |
3773 | ||
82f73884 PA |
3774 | static void |
3775 | remote_multi_process_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 | |
82f73884 PA |
3780 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3781 | } | |
3782 | ||
74531fed PA |
3783 | static void |
3784 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3785 | enum packet_support support, const char *value) | |
3786 | { | |
3787 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3788 | |
74531fed PA |
3789 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3790 | } | |
3791 | ||
782b2b07 SS |
3792 | static void |
3793 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3794 | enum packet_support support, | |
3795 | const char *value) | |
3796 | { | |
3797 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3798 | |
782b2b07 SS |
3799 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3800 | } | |
3801 | ||
3788aec7 LM |
3802 | static void |
3803 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3804 | enum packet_support support, | |
3805 | const char *value) | |
3806 | { | |
3807 | struct remote_state *rs = get_remote_state (); | |
3808 | ||
3809 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3810 | } | |
3811 | ||
d3ce09f5 SS |
3812 | static void |
3813 | remote_breakpoint_commands_feature (const struct protocol_feature *feature, | |
3814 | enum packet_support support, | |
3815 | const char *value) | |
3816 | { | |
3817 | struct remote_state *rs = get_remote_state (); | |
3818 | ||
3819 | rs->breakpoint_commands = (support == PACKET_ENABLE); | |
3820 | } | |
3821 | ||
7a697b8d SS |
3822 | static void |
3823 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3824 | enum packet_support support, | |
3825 | const char *value) | |
3826 | { | |
3827 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3828 | |
7a697b8d SS |
3829 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3830 | } | |
3831 | ||
0fb4aa4b PA |
3832 | static void |
3833 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3834 | enum packet_support support, | |
3835 | const char *value) | |
3836 | { | |
3837 | struct remote_state *rs = get_remote_state (); | |
3838 | ||
3839 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3840 | } | |
3841 | ||
1e4d1764 YQ |
3842 | static void |
3843 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3844 | enum packet_support support, | |
3845 | const char *value) | |
3846 | { | |
3847 | struct remote_state *rs = get_remote_state (); | |
3848 | ||
3849 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3850 | } | |
3851 | ||
d5551862 SS |
3852 | static void |
3853 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3854 | enum packet_support support, | |
3855 | const char *value) | |
3856 | { | |
3857 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3858 | |
d5551862 SS |
3859 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3860 | } | |
3861 | ||
d248b706 KY |
3862 | static void |
3863 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3864 | enum packet_support support, | |
3865 | const char *value) | |
3866 | { | |
3867 | struct remote_state *rs = get_remote_state (); | |
3868 | ||
3869 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3870 | } | |
3871 | ||
3065dfb6 SS |
3872 | static void |
3873 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3874 | enum packet_support support, | |
3875 | const char *value) | |
3876 | { | |
3877 | struct remote_state *rs = get_remote_state (); | |
3878 | ||
3879 | rs->string_tracing = (support == PACKET_ENABLE); | |
3880 | } | |
3881 | ||
be2a5f71 | 3882 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3883 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3884 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3885 | PACKET_qXfer_auxv }, |
23181151 DJ |
3886 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3887 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3888 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3889 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3890 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3891 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3892 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3893 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3894 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3895 | PACKET_qXfer_spu_read }, | |
3896 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3897 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3898 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3899 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3900 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3901 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3902 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3903 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3904 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3905 | PACKET_QPassSignals }, | |
9b224c5e PA |
3906 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
3907 | PACKET_QProgramSignals }, | |
a6f3e723 SL |
3908 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3909 | PACKET_QStartNoAckMode }, | |
82f73884 | 3910 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3911 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3912 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3913 | PACKET_qXfer_siginfo_read }, | |
3914 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3915 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3916 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3917 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
3918 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
3919 | PACKET_ConditionalBreakpoints }, | |
d3ce09f5 SS |
3920 | { "BreakpointCommands", PACKET_DISABLE, remote_breakpoint_commands_feature, |
3921 | PACKET_BreakpointCommands }, | |
7a697b8d SS |
3922 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3923 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3924 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3925 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3926 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3927 | PACKET_InstallInTrace}, | |
d5551862 SS |
3928 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3929 | -1 }, | |
40ab02ce MS |
3930 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3931 | PACKET_bc }, | |
3932 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3933 | PACKET_bs }, | |
409873ef SS |
3934 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3935 | PACKET_TracepointSource }, | |
d914c394 SS |
3936 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3937 | PACKET_QAllow }, | |
d248b706 KY |
3938 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3939 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3940 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3941 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
3942 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
3943 | PACKET_qXfer_uib }, | |
03583c20 UW |
3944 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3945 | PACKET_QDisableRandomization }, | |
d1feda86 | 3946 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
3065dfb6 SS |
3947 | { "tracenz", PACKET_DISABLE, |
3948 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3949 | }; |
3950 | ||
c8d5aac9 L |
3951 | static char *remote_support_xml; |
3952 | ||
3953 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3954 | ||
3955 | void | |
6e39997a | 3956 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3957 | { |
3958 | #if defined(HAVE_LIBEXPAT) | |
3959 | if (remote_support_xml == NULL) | |
c4f7c687 | 3960 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3961 | else |
3962 | { | |
3963 | char *copy = xstrdup (remote_support_xml + 13); | |
3964 | char *p = strtok (copy, ","); | |
3965 | ||
3966 | do | |
3967 | { | |
3968 | if (strcmp (p, xml) == 0) | |
3969 | { | |
3970 | /* already there */ | |
3971 | xfree (copy); | |
3972 | return; | |
3973 | } | |
3974 | } | |
3975 | while ((p = strtok (NULL, ",")) != NULL); | |
3976 | xfree (copy); | |
3977 | ||
94b0dee1 PA |
3978 | remote_support_xml = reconcat (remote_support_xml, |
3979 | remote_support_xml, ",", xml, | |
3980 | (char *) NULL); | |
c8d5aac9 L |
3981 | } |
3982 | #endif | |
3983 | } | |
3984 | ||
3985 | static char * | |
3986 | remote_query_supported_append (char *msg, const char *append) | |
3987 | { | |
3988 | if (msg) | |
94b0dee1 | 3989 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3990 | else |
3991 | return xstrdup (append); | |
3992 | } | |
3993 | ||
be2a5f71 DJ |
3994 | static void |
3995 | remote_query_supported (void) | |
3996 | { | |
3997 | struct remote_state *rs = get_remote_state (); | |
3998 | char *next; | |
3999 | int i; | |
4000 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
4001 | ||
4002 | /* The packet support flags are handled differently for this packet | |
4003 | than for most others. We treat an error, a disabled packet, and | |
4004 | an empty response identically: any features which must be reported | |
4005 | to be used will be automatically disabled. An empty buffer | |
4006 | accomplishes this, since that is also the representation for a list | |
4007 | containing no features. */ | |
4008 | ||
4009 | rs->buf[0] = 0; | |
4010 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
4011 | { | |
c8d5aac9 | 4012 | char *q = NULL; |
94b0dee1 | 4013 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 4014 | |
901f9912 | 4015 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
4016 | |
4017 | if (remote_support_xml) | |
4018 | q = remote_query_supported_append (q, remote_support_xml); | |
4019 | ||
dde08ee1 PA |
4020 | q = remote_query_supported_append (q, "qRelocInsn+"); |
4021 | ||
4022 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
4023 | putpkt (q); | |
82f73884 | 4024 | |
94b0dee1 PA |
4025 | do_cleanups (old_chain); |
4026 | ||
be2a5f71 DJ |
4027 | getpkt (&rs->buf, &rs->buf_size, 0); |
4028 | ||
4029 | /* If an error occured, warn, but do not return - just reset the | |
4030 | buffer to empty and go on to disable features. */ | |
4031 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
4032 | == PACKET_ERROR) | |
4033 | { | |
4034 | warning (_("Remote failure reply: %s"), rs->buf); | |
4035 | rs->buf[0] = 0; | |
4036 | } | |
4037 | } | |
4038 | ||
4039 | memset (seen, 0, sizeof (seen)); | |
4040 | ||
4041 | next = rs->buf; | |
4042 | while (*next) | |
4043 | { | |
4044 | enum packet_support is_supported; | |
4045 | char *p, *end, *name_end, *value; | |
4046 | ||
4047 | /* First separate out this item from the rest of the packet. If | |
4048 | there's another item after this, we overwrite the separator | |
4049 | (terminated strings are much easier to work with). */ | |
4050 | p = next; | |
4051 | end = strchr (p, ';'); | |
4052 | if (end == NULL) | |
4053 | { | |
4054 | end = p + strlen (p); | |
4055 | next = end; | |
4056 | } | |
4057 | else | |
4058 | { | |
89be2091 DJ |
4059 | *end = '\0'; |
4060 | next = end + 1; | |
4061 | ||
be2a5f71 DJ |
4062 | if (end == p) |
4063 | { | |
4064 | warning (_("empty item in \"qSupported\" response")); | |
4065 | continue; | |
4066 | } | |
be2a5f71 DJ |
4067 | } |
4068 | ||
4069 | name_end = strchr (p, '='); | |
4070 | if (name_end) | |
4071 | { | |
4072 | /* This is a name=value entry. */ | |
4073 | is_supported = PACKET_ENABLE; | |
4074 | value = name_end + 1; | |
4075 | *name_end = '\0'; | |
4076 | } | |
4077 | else | |
4078 | { | |
4079 | value = NULL; | |
4080 | switch (end[-1]) | |
4081 | { | |
4082 | case '+': | |
4083 | is_supported = PACKET_ENABLE; | |
4084 | break; | |
4085 | ||
4086 | case '-': | |
4087 | is_supported = PACKET_DISABLE; | |
4088 | break; | |
4089 | ||
4090 | case '?': | |
4091 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
4092 | break; | |
4093 | ||
4094 | default: | |
3e43a32a MS |
4095 | warning (_("unrecognized item \"%s\" " |
4096 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
4097 | continue; |
4098 | } | |
4099 | end[-1] = '\0'; | |
4100 | } | |
4101 | ||
4102 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4103 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4104 | { | |
4105 | const struct protocol_feature *feature; | |
4106 | ||
4107 | seen[i] = 1; | |
4108 | feature = &remote_protocol_features[i]; | |
4109 | feature->func (feature, is_supported, value); | |
4110 | break; | |
4111 | } | |
4112 | } | |
4113 | ||
4114 | /* If we increased the packet size, make sure to increase the global | |
4115 | buffer size also. We delay this until after parsing the entire | |
4116 | qSupported packet, because this is the same buffer we were | |
4117 | parsing. */ | |
4118 | if (rs->buf_size < rs->explicit_packet_size) | |
4119 | { | |
4120 | rs->buf_size = rs->explicit_packet_size; | |
4121 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4122 | } | |
4123 | ||
4124 | /* Handle the defaults for unmentioned features. */ | |
4125 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4126 | if (!seen[i]) | |
4127 | { | |
4128 | const struct protocol_feature *feature; | |
4129 | ||
4130 | feature = &remote_protocol_features[i]; | |
4131 | feature->func (feature, feature->default_support, NULL); | |
4132 | } | |
4133 | } | |
4134 | ||
4135 | ||
c906108c | 4136 | static void |
3e43a32a MS |
4137 | remote_open_1 (char *name, int from_tty, |
4138 | struct target_ops *target, int extended_p) | |
c906108c | 4139 | { |
d01949b6 | 4140 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4141 | |
c906108c | 4142 | if (name == 0) |
8a3fe4f8 | 4143 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4144 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4145 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4146 | |
23860348 | 4147 | /* See FIXME above. */ |
c6ebd6cf | 4148 | if (!target_async_permitted) |
92d1e331 | 4149 | wait_forever_enabled_p = 1; |
6426a772 | 4150 | |
2d717e4f DJ |
4151 | /* If we're connected to a running target, target_preopen will kill it. |
4152 | But if we're connected to a target system with no running process, | |
4153 | then we will still be connected when it returns. Ask this question | |
4154 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4155 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4156 | { |
4157 | if (!from_tty | |
4158 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4159 | pop_target (); | |
4160 | else | |
4161 | error (_("Still connected.")); | |
4162 | } | |
4163 | ||
c906108c SS |
4164 | target_preopen (from_tty); |
4165 | ||
4166 | unpush_target (target); | |
4167 | ||
2d717e4f DJ |
4168 | /* This time without a query. If we were connected to an |
4169 | extended-remote target and target_preopen killed the running | |
4170 | process, we may still be connected. If we are starting "target | |
4171 | remote" now, the extended-remote target will not have been | |
4172 | removed by unpush_target. */ | |
c35b1492 | 4173 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4174 | pop_target (); |
4175 | ||
89be2091 DJ |
4176 | /* Make sure we send the passed signals list the next time we resume. */ |
4177 | xfree (last_pass_packet); | |
4178 | last_pass_packet = NULL; | |
4179 | ||
9b224c5e PA |
4180 | /* Make sure we send the program signals list the next time we |
4181 | resume. */ | |
4182 | xfree (last_program_signals_packet); | |
4183 | last_program_signals_packet = NULL; | |
4184 | ||
ad9a8f3f | 4185 | remote_fileio_reset (); |
1dd41f16 NS |
4186 | reopen_exec_file (); |
4187 | reread_symbols (); | |
4188 | ||
9db8d71f | 4189 | remote_desc = remote_serial_open (name); |
c906108c SS |
4190 | if (!remote_desc) |
4191 | perror_with_name (name); | |
4192 | ||
4193 | if (baud_rate != -1) | |
4194 | { | |
2cd58942 | 4195 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4196 | { |
9b74d5d3 KB |
4197 | /* The requested speed could not be set. Error out to |
4198 | top level after closing remote_desc. Take care to | |
4199 | set remote_desc to NULL to avoid closing remote_desc | |
4200 | more than once. */ | |
2cd58942 | 4201 | serial_close (remote_desc); |
9b74d5d3 | 4202 | remote_desc = NULL; |
c906108c SS |
4203 | perror_with_name (name); |
4204 | } | |
4205 | } | |
4206 | ||
2cd58942 | 4207 | serial_raw (remote_desc); |
c906108c SS |
4208 | |
4209 | /* If there is something sitting in the buffer we might take it as a | |
4210 | response to a command, which would be bad. */ | |
2cd58942 | 4211 | serial_flush_input (remote_desc); |
c906108c SS |
4212 | |
4213 | if (from_tty) | |
4214 | { | |
4215 | puts_filtered ("Remote debugging using "); | |
4216 | puts_filtered (name); | |
4217 | puts_filtered ("\n"); | |
4218 | } | |
23860348 | 4219 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4220 | |
74531fed PA |
4221 | /* Register extra event sources in the event loop. */ |
4222 | remote_async_inferior_event_token | |
4223 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4224 | NULL); | |
4225 | remote_async_get_pending_events_token | |
4226 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4227 | NULL); | |
4228 | ||
be2a5f71 DJ |
4229 | /* Reset the target state; these things will be queried either by |
4230 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4231 | init_all_packet_configs (); |
74531fed | 4232 | rs->cached_wait_status = 0; |
be2a5f71 | 4233 | rs->explicit_packet_size = 0; |
a6f3e723 | 4234 | rs->noack_mode = 0; |
82f73884 PA |
4235 | rs->multi_process_aware = 0; |
4236 | rs->extended = extended_p; | |
74531fed | 4237 | rs->non_stop_aware = 0; |
e24a49d8 | 4238 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4239 | rs->ctrlc_pending_p = 0; |
802188a7 | 4240 | |
79d7f229 PA |
4241 | general_thread = not_sent_ptid; |
4242 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4243 | remote_traceframe_number = -1; |
c906108c | 4244 | |
9d1f7ab2 MS |
4245 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4246 | use_threadinfo_query = 1; | |
4247 | use_threadextra_query = 1; | |
4248 | ||
c6ebd6cf | 4249 | if (target_async_permitted) |
92d1e331 | 4250 | { |
23860348 | 4251 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4252 | remote_async_terminal_ours_p = 1; |
4253 | ||
4254 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4255 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4256 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4257 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4258 | around this. Eventually a mechanism that allows |
92d1e331 | 4259 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4260 | implemented. */ |
92d1e331 DJ |
4261 | wait_forever_enabled_p = 0; |
4262 | } | |
4263 | ||
23860348 | 4264 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4265 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4266 | |
74531fed PA |
4267 | /* Start afresh. */ |
4268 | init_thread_list (); | |
4269 | ||
36918e70 | 4270 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4271 | target (we'd otherwise be in an inconsistent state) and then |
4272 | propogate the error on up the exception chain. This ensures that | |
4273 | the caller doesn't stumble along blindly assuming that the | |
4274 | function succeeded. The CLI doesn't have this problem but other | |
4275 | UI's, such as MI do. | |
36918e70 AC |
4276 | |
4277 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4278 | this function should return an error indication letting the | |
ce2826aa | 4279 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4280 | ``target remote'' is directly wired to this function making that |
4281 | impossible. On a positive note, the CLI side of this problem has | |
4282 | been fixed - the function set_cmd_context() makes it possible for | |
4283 | all the ``target ....'' commands to share a common callback | |
4284 | function. See cli-dump.c. */ | |
109c3e39 | 4285 | { |
04bd08de | 4286 | volatile struct gdb_exception ex; |
2d717e4f | 4287 | |
04bd08de TT |
4288 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4289 | { | |
4290 | remote_start_remote (from_tty, target, extended_p); | |
4291 | } | |
109c3e39 AC |
4292 | if (ex.reason < 0) |
4293 | { | |
c8d104ad PA |
4294 | /* Pop the partially set up target - unless something else did |
4295 | already before throwing the exception. */ | |
4296 | if (remote_desc != NULL) | |
4297 | pop_target (); | |
c6ebd6cf | 4298 | if (target_async_permitted) |
109c3e39 AC |
4299 | wait_forever_enabled_p = 1; |
4300 | throw_exception (ex); | |
4301 | } | |
4302 | } | |
c906108c | 4303 | |
c6ebd6cf | 4304 | if (target_async_permitted) |
92d1e331 | 4305 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4306 | } |
4307 | ||
c906108c SS |
4308 | /* This takes a program previously attached to and detaches it. After |
4309 | this is done, GDB can be used to debug some other program. We | |
4310 | better not have left any breakpoints in the target program or it'll | |
4311 | die when it hits one. */ | |
4312 | ||
4313 | static void | |
2d717e4f | 4314 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4315 | { |
82f73884 | 4316 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4317 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4318 | |
4319 | if (args) | |
8a3fe4f8 | 4320 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4321 | |
2d717e4f DJ |
4322 | if (!target_has_execution) |
4323 | error (_("No process to detach from.")); | |
4324 | ||
7cee1e54 PA |
4325 | if (from_tty) |
4326 | { | |
4327 | char *exec_file = get_exec_file (0); | |
4328 | if (exec_file == NULL) | |
4329 | exec_file = ""; | |
4330 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4331 | target_pid_to_str (pid_to_ptid (pid))); | |
4332 | gdb_flush (gdb_stdout); | |
4333 | } | |
4334 | ||
c906108c | 4335 | /* Tell the remote target to detach. */ |
82f73884 | 4336 | if (remote_multi_process_p (rs)) |
bba74b36 | 4337 | xsnprintf (rs->buf, get_remote_packet_size (), "D;%x", pid); |
82f73884 PA |
4338 | else |
4339 | strcpy (rs->buf, "D"); | |
4340 | ||
4ddda9b5 PA |
4341 | putpkt (rs->buf); |
4342 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4343 | ||
82f73884 PA |
4344 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4345 | ; | |
4346 | else if (rs->buf[0] == '\0') | |
4347 | error (_("Remote doesn't know how to detach")); | |
4348 | else | |
4ddda9b5 | 4349 | error (_("Can't detach process.")); |
c906108c | 4350 | |
7cee1e54 PA |
4351 | if (from_tty && !extended) |
4352 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4353 | |
74531fed | 4354 | discard_pending_stop_replies (pid); |
82f73884 | 4355 | target_mourn_inferior (); |
2d717e4f DJ |
4356 | } |
4357 | ||
4358 | static void | |
136d6dae | 4359 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4360 | { |
4361 | remote_detach_1 (args, from_tty, 0); | |
4362 | } | |
4363 | ||
4364 | static void | |
136d6dae | 4365 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4366 | { |
4367 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4368 | } |
4369 | ||
6ad8ae5c DJ |
4370 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4371 | ||
43ff13b4 | 4372 | static void |
597320e7 | 4373 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4374 | { |
43ff13b4 | 4375 | if (args) |
2d717e4f | 4376 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4377 | |
2d717e4f DJ |
4378 | /* Make sure we unpush even the extended remote targets; mourn |
4379 | won't do it. So call remote_mourn_1 directly instead of | |
4380 | target_mourn_inferior. */ | |
4381 | remote_mourn_1 (target); | |
4382 | ||
43ff13b4 JM |
4383 | if (from_tty) |
4384 | puts_filtered ("Ending remote debugging.\n"); | |
4385 | } | |
4386 | ||
2d717e4f DJ |
4387 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4388 | be chatty about it. */ | |
4389 | ||
4390 | static void | |
4391 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4392 | { | |
4393 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4394 | int pid; |
96ef3384 | 4395 | char *wait_status = NULL; |
2d717e4f | 4396 | |
74164c56 | 4397 | pid = parse_pid_to_attach (args); |
2d717e4f | 4398 | |
74164c56 JK |
4399 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4400 | way as in other targets. */ | |
2d717e4f DJ |
4401 | |
4402 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4403 | error (_("This target does not support attaching to a process")); | |
4404 | ||
7cee1e54 PA |
4405 | if (from_tty) |
4406 | { | |
4407 | char *exec_file = get_exec_file (0); | |
4408 | ||
4409 | if (exec_file) | |
4410 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4411 | target_pid_to_str (pid_to_ptid (pid))); | |
4412 | else | |
4413 | printf_unfiltered (_("Attaching to %s\n"), | |
4414 | target_pid_to_str (pid_to_ptid (pid))); | |
4415 | ||
4416 | gdb_flush (gdb_stdout); | |
4417 | } | |
4418 | ||
bba74b36 | 4419 | xsnprintf (rs->buf, get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f DJ |
4420 | putpkt (rs->buf); |
4421 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4422 | ||
3e43a32a MS |
4423 | if (packet_ok (rs->buf, |
4424 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4425 | { |
74531fed PA |
4426 | if (!non_stop) |
4427 | { | |
4428 | /* Save the reply for later. */ | |
4429 | wait_status = alloca (strlen (rs->buf) + 1); | |
4430 | strcpy (wait_status, rs->buf); | |
4431 | } | |
4432 | else if (strcmp (rs->buf, "OK") != 0) | |
4433 | error (_("Attaching to %s failed with: %s"), | |
4434 | target_pid_to_str (pid_to_ptid (pid)), | |
4435 | rs->buf); | |
2d717e4f DJ |
4436 | } |
4437 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4438 | error (_("This target does not support attaching to a process")); | |
4439 | else | |
4440 | error (_("Attaching to %s failed"), | |
4441 | target_pid_to_str (pid_to_ptid (pid))); | |
4442 | ||
49c62f2e | 4443 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4444 | |
2d717e4f | 4445 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4446 | |
bad34192 PA |
4447 | if (non_stop) |
4448 | { | |
4449 | struct thread_info *thread; | |
79d7f229 | 4450 | |
bad34192 PA |
4451 | /* Get list of threads. */ |
4452 | remote_threads_info (target); | |
82f73884 | 4453 | |
bad34192 PA |
4454 | thread = first_thread_of_process (pid); |
4455 | if (thread) | |
4456 | inferior_ptid = thread->ptid; | |
4457 | else | |
4458 | inferior_ptid = pid_to_ptid (pid); | |
4459 | ||
4460 | /* Invalidate our notion of the remote current thread. */ | |
4461 | record_currthread (minus_one_ptid); | |
4462 | } | |
74531fed | 4463 | else |
bad34192 PA |
4464 | { |
4465 | /* Now, if we have thread information, update inferior_ptid. */ | |
4466 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4467 | ||
4468 | /* Add the main thread to the thread list. */ | |
4469 | add_thread_silent (inferior_ptid); | |
4470 | } | |
c0a2216e | 4471 | |
96ef3384 UW |
4472 | /* Next, if the target can specify a description, read it. We do |
4473 | this before anything involving memory or registers. */ | |
4474 | target_find_description (); | |
4475 | ||
74531fed PA |
4476 | if (!non_stop) |
4477 | { | |
4478 | /* Use the previously fetched status. */ | |
4479 | gdb_assert (wait_status != NULL); | |
4480 | ||
4481 | if (target_can_async_p ()) | |
4482 | { | |
4483 | struct stop_reply *stop_reply; | |
4484 | struct cleanup *old_chain; | |
4485 | ||
4486 | stop_reply = stop_reply_xmalloc (); | |
4487 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4488 | remote_parse_stop_reply (wait_status, stop_reply); | |
4489 | discard_cleanups (old_chain); | |
4490 | push_stop_reply (stop_reply); | |
4491 | ||
4492 | target_async (inferior_event_handler, 0); | |
4493 | } | |
4494 | else | |
4495 | { | |
4496 | gdb_assert (wait_status != NULL); | |
4497 | strcpy (rs->buf, wait_status); | |
4498 | rs->cached_wait_status = 1; | |
4499 | } | |
4500 | } | |
4501 | else | |
4502 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4503 | } |
4504 | ||
4505 | static void | |
136d6dae | 4506 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4507 | { |
136d6dae | 4508 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4509 | } |
4510 | ||
c906108c SS |
4511 | /* Convert hex digit A to a number. */ |
4512 | ||
30559e10 | 4513 | static int |
fba45db2 | 4514 | fromhex (int a) |
c906108c SS |
4515 | { |
4516 | if (a >= '0' && a <= '9') | |
4517 | return a - '0'; | |
4518 | else if (a >= 'a' && a <= 'f') | |
4519 | return a - 'a' + 10; | |
4520 | else if (a >= 'A' && a <= 'F') | |
4521 | return a - 'A' + 10; | |
c5aa993b | 4522 | else |
8a3fe4f8 | 4523 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4524 | } |
4525 | ||
00bf0b85 | 4526 | int |
cfd77fa1 | 4527 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4528 | { |
4529 | int i; | |
4530 | ||
30559e10 MS |
4531 | for (i = 0; i < count; i++) |
4532 | { | |
4533 | if (hex[0] == 0 || hex[1] == 0) | |
4534 | { | |
4535 | /* Hex string is short, or of uneven length. | |
23860348 | 4536 | Return the count that has been converted so far. */ |
30559e10 MS |
4537 | return i; |
4538 | } | |
4539 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4540 | hex += 2; | |
4541 | } | |
4542 | return i; | |
4543 | } | |
4544 | ||
c906108c SS |
4545 | /* Convert number NIB to a hex digit. */ |
4546 | ||
4547 | static int | |
fba45db2 | 4548 | tohex (int nib) |
c906108c SS |
4549 | { |
4550 | if (nib < 10) | |
c5aa993b | 4551 | return '0' + nib; |
c906108c | 4552 | else |
c5aa993b | 4553 | return 'a' + nib - 10; |
c906108c | 4554 | } |
30559e10 | 4555 | |
00bf0b85 | 4556 | int |
cfd77fa1 | 4557 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4558 | { |
4559 | int i; | |
a744cf53 | 4560 | |
23860348 | 4561 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4562 | if (count == 0) |
cfd77fa1 | 4563 | count = strlen ((char *) bin); |
30559e10 MS |
4564 | |
4565 | for (i = 0; i < count; i++) | |
4566 | { | |
4567 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4568 | *hex++ = tohex (*bin++ & 0xf); | |
4569 | } | |
4570 | *hex = 0; | |
4571 | return i; | |
4572 | } | |
c906108c | 4573 | \f |
506fb367 DJ |
4574 | /* Check for the availability of vCont. This function should also check |
4575 | the response. */ | |
c906108c SS |
4576 | |
4577 | static void | |
6d820c5c | 4578 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4579 | { |
2e9f7625 | 4580 | char *buf; |
6d820c5c | 4581 | |
2e9f7625 DJ |
4582 | strcpy (rs->buf, "vCont?"); |
4583 | putpkt (rs->buf); | |
6d820c5c | 4584 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4585 | buf = rs->buf; |
c906108c | 4586 | |
506fb367 DJ |
4587 | /* Make sure that the features we assume are supported. */ |
4588 | if (strncmp (buf, "vCont", 5) == 0) | |
4589 | { | |
4590 | char *p = &buf[5]; | |
4591 | int support_s, support_S, support_c, support_C; | |
4592 | ||
4593 | support_s = 0; | |
4594 | support_S = 0; | |
4595 | support_c = 0; | |
4596 | support_C = 0; | |
74531fed | 4597 | rs->support_vCont_t = 0; |
506fb367 DJ |
4598 | while (p && *p == ';') |
4599 | { | |
4600 | p++; | |
4601 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4602 | support_s = 1; | |
4603 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4604 | support_S = 1; | |
4605 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4606 | support_c = 1; | |
4607 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4608 | support_C = 1; | |
74531fed PA |
4609 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4610 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4611 | |
4612 | p = strchr (p, ';'); | |
4613 | } | |
c906108c | 4614 | |
506fb367 DJ |
4615 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4616 | BUF will make packet_ok disable the packet. */ | |
4617 | if (!support_s || !support_S || !support_c || !support_C) | |
4618 | buf[0] = 0; | |
4619 | } | |
c906108c | 4620 | |
444abaca | 4621 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4622 | } |
c906108c | 4623 | |
0d8f58ca PA |
4624 | /* Helper function for building "vCont" resumptions. Write a |
4625 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4626 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4627 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4628 | resumed thread should be single-stepped and/or signalled. If PTID | |
4629 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4630 | represents a process, then all threads of the process are resumed; | |
4631 | the thread to be stepped and/or signalled is given in the global | |
4632 | INFERIOR_PTID. */ | |
4633 | ||
4634 | static char * | |
4635 | append_resumption (char *p, char *endp, | |
2ea28649 | 4636 | ptid_t ptid, int step, enum gdb_signal siggnal) |
0d8f58ca PA |
4637 | { |
4638 | struct remote_state *rs = get_remote_state (); | |
4639 | ||
a493e3e2 | 4640 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4641 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
4642 | else if (step) | |
4643 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 4644 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
4645 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
4646 | else | |
4647 | p += xsnprintf (p, endp - p, ";c"); | |
4648 | ||
4649 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4650 | { | |
4651 | ptid_t nptid; | |
4652 | ||
4653 | /* All (-1) threads of process. */ | |
4654 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4655 | ||
4656 | p += xsnprintf (p, endp - p, ":"); | |
4657 | p = write_ptid (p, endp, nptid); | |
4658 | } | |
4659 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4660 | { | |
4661 | p += xsnprintf (p, endp - p, ":"); | |
4662 | p = write_ptid (p, endp, ptid); | |
4663 | } | |
4664 | ||
4665 | return p; | |
4666 | } | |
4667 | ||
e5ef252a PA |
4668 | /* Append a vCont continue-with-signal action for threads that have a |
4669 | non-zero stop signal. */ | |
4670 | ||
4671 | static char * | |
4672 | append_pending_thread_resumptions (char *p, char *endp, ptid_t ptid) | |
4673 | { | |
4674 | struct thread_info *thread; | |
4675 | ||
4676 | ALL_THREADS (thread) | |
4677 | if (ptid_match (thread->ptid, ptid) | |
4678 | && !ptid_equal (inferior_ptid, thread->ptid) | |
4679 | && thread->suspend.stop_signal != GDB_SIGNAL_0 | |
4680 | && signal_pass_state (thread->suspend.stop_signal)) | |
4681 | { | |
4682 | p = append_resumption (p, endp, thread->ptid, | |
4683 | 0, thread->suspend.stop_signal); | |
4684 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
4685 | } | |
4686 | ||
4687 | return p; | |
4688 | } | |
4689 | ||
506fb367 DJ |
4690 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4691 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4692 | resumed thread should be single-stepped and/or signalled. If PTID |
4693 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4694 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4695 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4696 | |
506fb367 DJ |
4697 | This function issues a strict subset of all possible vCont commands at the |
4698 | moment. */ | |
44eaed12 | 4699 | |
506fb367 | 4700 | static int |
2ea28649 | 4701 | remote_vcont_resume (ptid_t ptid, int step, enum gdb_signal siggnal) |
506fb367 DJ |
4702 | { |
4703 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4704 | char *p; |
4705 | char *endp; | |
44eaed12 | 4706 | |
444abaca | 4707 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4708 | remote_vcont_probe (rs); |
44eaed12 | 4709 | |
444abaca | 4710 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4711 | return 0; |
44eaed12 | 4712 | |
82f73884 PA |
4713 | p = rs->buf; |
4714 | endp = rs->buf + get_remote_packet_size (); | |
4715 | ||
506fb367 DJ |
4716 | /* If we could generate a wider range of packets, we'd have to worry |
4717 | about overflowing BUF. Should there be a generic | |
4718 | "multi-part-packet" packet? */ | |
4719 | ||
0d8f58ca PA |
4720 | p += xsnprintf (p, endp - p, "vCont"); |
4721 | ||
79d7f229 | 4722 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4723 | { |
79d7f229 PA |
4724 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4725 | so we don't have any TID numbers the inferior will | |
4726 | understand. Make sure to only send forms that do not specify | |
4727 | a TID. */ | |
a9cbf802 | 4728 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4729 | } |
0d8f58ca | 4730 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4731 | { |
0d8f58ca PA |
4732 | /* Resume all threads (of all processes, or of a single |
4733 | process), with preference for INFERIOR_PTID. This assumes | |
4734 | inferior_ptid belongs to the set of all threads we are about | |
4735 | to resume. */ | |
a493e3e2 | 4736 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 4737 | { |
0d8f58ca PA |
4738 | /* Step inferior_ptid, with or without signal. */ |
4739 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4740 | } |
0d8f58ca | 4741 | |
e5ef252a PA |
4742 | /* Also pass down any pending signaled resumption for other |
4743 | threads not the current. */ | |
4744 | p = append_pending_thread_resumptions (p, endp, ptid); | |
4745 | ||
0d8f58ca | 4746 | /* And continue others without a signal. */ |
a493e3e2 | 4747 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
4748 | } |
4749 | else | |
506fb367 DJ |
4750 | { |
4751 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4752 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4753 | } |
c906108c | 4754 | |
82f73884 PA |
4755 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4756 | putpkt (rs->buf); | |
506fb367 | 4757 | |
74531fed PA |
4758 | if (non_stop) |
4759 | { | |
4760 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4761 | reply will be reported asynchronously by means of a `%Stop' | |
4762 | notification. */ | |
4763 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4764 | if (strcmp (rs->buf, "OK") != 0) | |
4765 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4766 | } | |
4767 | ||
506fb367 | 4768 | return 1; |
c906108c | 4769 | } |
43ff13b4 | 4770 | |
506fb367 DJ |
4771 | /* Tell the remote machine to resume. */ |
4772 | ||
a493e3e2 | 4773 | static enum gdb_signal last_sent_signal = GDB_SIGNAL_0; |
506fb367 DJ |
4774 | |
4775 | static int last_sent_step; | |
4776 | ||
43ff13b4 | 4777 | static void |
28439f5e | 4778 | remote_resume (struct target_ops *ops, |
2ea28649 | 4779 | ptid_t ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 4780 | { |
d01949b6 | 4781 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4782 | char *buf; |
43ff13b4 | 4783 | |
43ff13b4 JM |
4784 | last_sent_signal = siggnal; |
4785 | last_sent_step = step; | |
4786 | ||
506fb367 | 4787 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4788 | /* No reverse support (yet) for vCont. */ |
4789 | if (execution_direction != EXEC_REVERSE) | |
4790 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4791 | goto done; | |
506fb367 | 4792 | |
79d7f229 PA |
4793 | /* All other supported resume packets do use Hc, so set the continue |
4794 | thread. */ | |
4795 | if (ptid_equal (ptid, minus_one_ptid)) | |
4796 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4797 | else |
79d7f229 | 4798 | set_continue_thread (ptid); |
506fb367 | 4799 | |
2e9f7625 | 4800 | buf = rs->buf; |
b2175913 MS |
4801 | if (execution_direction == EXEC_REVERSE) |
4802 | { | |
4803 | /* We don't pass signals to the target in reverse exec mode. */ | |
a493e3e2 | 4804 | if (info_verbose && siggnal != GDB_SIGNAL_0) |
7ea6d463 | 4805 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4806 | siggnal); |
40ab02ce MS |
4807 | |
4808 | if (step | |
4809 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4810 | error (_("Remote reverse-step not supported.")); | |
4811 | if (!step | |
4812 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4813 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4814 | |
b2175913 MS |
4815 | strcpy (buf, step ? "bs" : "bc"); |
4816 | } | |
a493e3e2 | 4817 | else if (siggnal != GDB_SIGNAL_0) |
43ff13b4 JM |
4818 | { |
4819 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4820 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4821 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4822 | buf[3] = '\0'; |
4823 | } | |
4824 | else | |
c5aa993b | 4825 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4826 | |
44eaed12 | 4827 | putpkt (buf); |
43ff13b4 | 4828 | |
75c99385 | 4829 | done: |
2acceee2 | 4830 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4831 | with the event loop. NOTE: this is the one place where all the |
4832 | execution commands end up. We could alternatively do this in each | |
23860348 | 4833 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4834 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4835 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4836 | NOT asynchronously. */ |
362646f5 | 4837 | if (target_can_async_p ()) |
2acceee2 | 4838 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4839 | |
4840 | /* We've just told the target to resume. The remote server will | |
4841 | wait for the inferior to stop, and then send a stop reply. In | |
4842 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4843 | because the stub wouldn't be ready to process it. This applies |
4844 | only to the base all-stop protocol, however. In non-stop (which | |
4845 | only supports vCont), the stub replies with an "OK", and is | |
4846 | immediate able to process further serial input. */ | |
4847 | if (!non_stop) | |
4848 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4849 | } |
c906108c | 4850 | \f |
43ff13b4 JM |
4851 | |
4852 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4853 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4854 | static void |
fba45db2 | 4855 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4856 | { |
43ff13b4 JM |
4857 | signal (SIGINT, handle_remote_sigint); |
4858 | } | |
4859 | ||
23860348 | 4860 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4861 | static void |
fba45db2 | 4862 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4863 | { |
4864 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4865 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4866 | } | |
4867 | ||
4868 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4869 | sent once. It will take effect the second time that the user sends | |
23860348 | 4870 | a ^C. */ |
43ff13b4 | 4871 | static void |
fba45db2 | 4872 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4873 | { |
b803fb0f | 4874 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4875 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4876 | } | |
4877 | ||
6426a772 | 4878 | /* Perform the real interruption of the target execution, in response |
23860348 | 4879 | to a ^C. */ |
c5aa993b | 4880 | static void |
fba45db2 | 4881 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4882 | { |
4883 | if (remote_debug) | |
248fd3bf | 4884 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt called\n"); |
43ff13b4 | 4885 | |
94cc34af | 4886 | target_stop (inferior_ptid); |
43ff13b4 JM |
4887 | } |
4888 | ||
0df8b418 | 4889 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4890 | up on the target alltogether. */ |
2df3850c | 4891 | void |
fba45db2 | 4892 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4893 | { |
2df3850c | 4894 | if (remote_debug) |
248fd3bf | 4895 | fprintf_unfiltered (gdb_stdlog, "async_remote_interrupt_twice called\n"); |
b803fb0f DJ |
4896 | |
4897 | interrupt_query (); | |
43ff13b4 JM |
4898 | } |
4899 | ||
4900 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4901 | stopped. */ |
6426a772 JM |
4902 | static void |
4903 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4904 | { |
4905 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4906 | } |
4907 | ||
c906108c SS |
4908 | /* Send ^C to target to halt it. Target will respond, and send us a |
4909 | packet. */ | |
507f3c78 | 4910 | static void (*ofunc) (int); |
c906108c | 4911 | |
0df8b418 MS |
4912 | /* The command line interface's stop routine. This function is installed |
4913 | as a signal handler for SIGINT. The first time a user requests a | |
4914 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4915 | response from the target (it didn't stop when the user requested it), |
23860348 | 4916 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4917 | static void |
fba45db2 | 4918 | remote_interrupt (int signo) |
c906108c | 4919 | { |
23860348 | 4920 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4921 | signal (signo, remote_interrupt_twice); |
4922 | ||
b803fb0f | 4923 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4924 | } |
4925 | ||
4926 | /* The user typed ^C twice. */ | |
4927 | ||
4928 | static void | |
fba45db2 | 4929 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4930 | { |
4931 | signal (signo, ofunc); | |
b803fb0f | 4932 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4933 | signal (signo, remote_interrupt); |
4934 | } | |
7a292a7a | 4935 | |
74531fed PA |
4936 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4937 | thread, all threads of a remote process, or all threads of all | |
4938 | processes. */ | |
4939 | ||
4940 | static void | |
4941 | remote_stop_ns (ptid_t ptid) | |
4942 | { | |
4943 | struct remote_state *rs = get_remote_state (); | |
4944 | char *p = rs->buf; | |
4945 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4946 | |
4947 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4948 | remote_vcont_probe (rs); | |
4949 | ||
4950 | if (!rs->support_vCont_t) | |
4951 | error (_("Remote server does not support stopping threads")); | |
4952 | ||
f91d3df5 PA |
4953 | if (ptid_equal (ptid, minus_one_ptid) |
4954 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4955 | p += xsnprintf (p, endp - p, "vCont;t"); |
4956 | else | |
4957 | { | |
4958 | ptid_t nptid; | |
4959 | ||
74531fed PA |
4960 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4961 | ||
4962 | if (ptid_is_pid (ptid)) | |
4963 | /* All (-1) threads of process. */ | |
4964 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4965 | else | |
4966 | { | |
4967 | /* Small optimization: if we already have a stop reply for | |
4968 | this thread, no use in telling the stub we want this | |
4969 | stopped. */ | |
4970 | if (peek_stop_reply (ptid)) | |
4971 | return; | |
4972 | ||
4973 | nptid = ptid; | |
4974 | } | |
4975 | ||
a9cbf802 | 4976 | write_ptid (p, endp, nptid); |
74531fed PA |
4977 | } |
4978 | ||
4979 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4980 | come in asynchronously by notification. */ | |
4981 | putpkt (rs->buf); | |
4982 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4983 | if (strcmp (rs->buf, "OK") != 0) | |
4984 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4985 | } | |
4986 | ||
4987 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4988 | remote target. It is undefined which thread of which process | |
4989 | reports the stop. */ | |
4990 | ||
4991 | static void | |
4992 | remote_stop_as (ptid_t ptid) | |
4993 | { | |
4994 | struct remote_state *rs = get_remote_state (); | |
4995 | ||
3a29589a DJ |
4996 | rs->ctrlc_pending_p = 1; |
4997 | ||
74531fed PA |
4998 | /* If the inferior is stopped already, but the core didn't know |
4999 | about it yet, just ignore the request. The cached wait status | |
5000 | will be collected in remote_wait. */ | |
5001 | if (rs->cached_wait_status) | |
5002 | return; | |
5003 | ||
9a7071a8 JB |
5004 | /* Send interrupt_sequence to remote target. */ |
5005 | send_interrupt_sequence (); | |
74531fed PA |
5006 | } |
5007 | ||
0df8b418 | 5008 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 5009 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 5010 | will eventually end up here. */ |
74531fed | 5011 | |
c906108c | 5012 | static void |
94cc34af | 5013 | remote_stop (ptid_t ptid) |
c906108c | 5014 | { |
7a292a7a | 5015 | if (remote_debug) |
0f71a2f6 | 5016 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 5017 | |
74531fed PA |
5018 | if (non_stop) |
5019 | remote_stop_ns (ptid); | |
c906108c | 5020 | else |
74531fed | 5021 | remote_stop_as (ptid); |
c906108c SS |
5022 | } |
5023 | ||
5024 | /* Ask the user what to do when an interrupt is received. */ | |
5025 | ||
5026 | static void | |
fba45db2 | 5027 | interrupt_query (void) |
c906108c SS |
5028 | { |
5029 | target_terminal_ours (); | |
5030 | ||
74531fed | 5031 | if (target_can_async_p ()) |
c906108c | 5032 | { |
74531fed | 5033 | signal (SIGINT, handle_sigint); |
315a522e | 5034 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 5035 | } |
74531fed PA |
5036 | else |
5037 | { | |
9e2f0ad4 HZ |
5038 | if (query (_("Interrupted while waiting for the program.\n\ |
5039 | Give up (and stop debugging it)? "))) | |
74531fed PA |
5040 | { |
5041 | pop_target (); | |
5042 | deprecated_throw_reason (RETURN_QUIT); | |
5043 | } | |
5044 | } | |
c906108c SS |
5045 | |
5046 | target_terminal_inferior (); | |
5047 | } | |
5048 | ||
6426a772 JM |
5049 | /* Enable/disable target terminal ownership. Most targets can use |
5050 | terminal groups to control terminal ownership. Remote targets are | |
5051 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 5052 | is required. */ |
6426a772 JM |
5053 | |
5054 | static void | |
75c99385 | 5055 | remote_terminal_inferior (void) |
6426a772 | 5056 | { |
c6ebd6cf | 5057 | if (!target_async_permitted) |
75c99385 PA |
5058 | /* Nothing to do. */ |
5059 | return; | |
5060 | ||
d9d2d8b6 PA |
5061 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
5062 | idempotent. The event-loop GDB talking to an asynchronous target | |
5063 | with a synchronous command calls this function from both | |
5064 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
5065 | transfer the terminal to the target when it shouldn't this guard | |
5066 | can go away. */ | |
6426a772 JM |
5067 | if (!remote_async_terminal_ours_p) |
5068 | return; | |
5069 | delete_file_handler (input_fd); | |
5070 | remote_async_terminal_ours_p = 0; | |
5071 | initialize_sigint_signal_handler (); | |
5072 | /* NOTE: At this point we could also register our selves as the | |
5073 | recipient of all input. Any characters typed could then be | |
23860348 | 5074 | passed on down to the target. */ |
6426a772 JM |
5075 | } |
5076 | ||
5077 | static void | |
75c99385 | 5078 | remote_terminal_ours (void) |
6426a772 | 5079 | { |
c6ebd6cf | 5080 | if (!target_async_permitted) |
75c99385 PA |
5081 | /* Nothing to do. */ |
5082 | return; | |
5083 | ||
5084 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
5085 | if (remote_async_terminal_ours_p) |
5086 | return; | |
5087 | cleanup_sigint_signal_handler (NULL); | |
5088 | add_file_handler (input_fd, stdin_event_handler, 0); | |
5089 | remote_async_terminal_ours_p = 1; | |
5090 | } | |
5091 | ||
176a6961 | 5092 | static void |
917317f4 | 5093 | remote_console_output (char *msg) |
c906108c SS |
5094 | { |
5095 | char *p; | |
5096 | ||
c5aa993b | 5097 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
5098 | { |
5099 | char tb[2]; | |
5100 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 5101 | |
c906108c SS |
5102 | tb[0] = c; |
5103 | tb[1] = 0; | |
43ff13b4 | 5104 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 5105 | } |
00db5b94 PA |
5106 | gdb_flush (gdb_stdtarg); |
5107 | } | |
74531fed PA |
5108 | |
5109 | typedef struct cached_reg | |
5110 | { | |
5111 | int num; | |
5112 | gdb_byte data[MAX_REGISTER_SIZE]; | |
5113 | } cached_reg_t; | |
5114 | ||
5115 | DEF_VEC_O(cached_reg_t); | |
5116 | ||
5117 | struct stop_reply | |
5118 | { | |
5119 | struct stop_reply *next; | |
5120 | ||
5121 | ptid_t ptid; | |
5122 | ||
5123 | struct target_waitstatus ws; | |
5124 | ||
15148d6a PA |
5125 | /* Expedited registers. This makes remote debugging a bit more |
5126 | efficient for those targets that provide critical registers as | |
5127 | part of their normal status mechanism (as another roundtrip to | |
5128 | fetch them is avoided). */ | |
74531fed PA |
5129 | VEC(cached_reg_t) *regcache; |
5130 | ||
5131 | int stopped_by_watchpoint_p; | |
5132 | CORE_ADDR watch_data_address; | |
5133 | ||
5134 | int solibs_changed; | |
5135 | int replay_event; | |
dc146f7c VP |
5136 | |
5137 | int core; | |
74531fed PA |
5138 | }; |
5139 | ||
5140 | /* The list of already fetched and acknowledged stop events. */ | |
5141 | static struct stop_reply *stop_reply_queue; | |
5142 | ||
5143 | static struct stop_reply * | |
5144 | stop_reply_xmalloc (void) | |
5145 | { | |
5146 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 5147 | |
74531fed PA |
5148 | r->next = NULL; |
5149 | return r; | |
5150 | } | |
5151 | ||
5152 | static void | |
5153 | stop_reply_xfree (struct stop_reply *r) | |
5154 | { | |
5155 | if (r != NULL) | |
5156 | { | |
5157 | VEC_free (cached_reg_t, r->regcache); | |
5158 | xfree (r); | |
5159 | } | |
c906108c SS |
5160 | } |
5161 | ||
74531fed PA |
5162 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
5163 | discard everything. */ | |
c906108c | 5164 | |
74531fed PA |
5165 | static void |
5166 | discard_pending_stop_replies (int pid) | |
c906108c | 5167 | { |
74531fed | 5168 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 5169 | |
74531fed PA |
5170 | /* Discard the in-flight notification. */ |
5171 | if (pending_stop_reply != NULL | |
5172 | && (pid == -1 | |
5173 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
5174 | { | |
5175 | stop_reply_xfree (pending_stop_reply); | |
5176 | pending_stop_reply = NULL; | |
5177 | } | |
c906108c | 5178 | |
74531fed PA |
5179 | /* Discard the stop replies we have already pulled with |
5180 | vStopped. */ | |
5181 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 5182 | { |
74531fed PA |
5183 | next = reply->next; |
5184 | if (pid == -1 | |
5185 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 5186 | { |
74531fed PA |
5187 | if (reply == stop_reply_queue) |
5188 | stop_reply_queue = reply->next; | |
5189 | else | |
5190 | prev->next = reply->next; | |
5191 | ||
5192 | stop_reply_xfree (reply); | |
9fa2223d | 5193 | } |
74531fed PA |
5194 | else |
5195 | prev = reply; | |
c8e38a49 | 5196 | } |
74531fed | 5197 | } |
43ff13b4 | 5198 | |
74531fed | 5199 | /* Cleanup wrapper. */ |
2e9f7625 | 5200 | |
74531fed PA |
5201 | static void |
5202 | do_stop_reply_xfree (void *arg) | |
5203 | { | |
5204 | struct stop_reply *r = arg; | |
a744cf53 | 5205 | |
74531fed PA |
5206 | stop_reply_xfree (r); |
5207 | } | |
75c99385 | 5208 | |
74531fed PA |
5209 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5210 | remove it from the queue, and return it. Returns NULL if none is | |
5211 | found. If there are still queued events left to process, tell the | |
5212 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5213 | |
74531fed PA |
5214 | static struct stop_reply * |
5215 | queued_stop_reply (ptid_t ptid) | |
5216 | { | |
0723dbf5 PA |
5217 | struct stop_reply *it; |
5218 | struct stop_reply **it_link; | |
74531fed | 5219 | |
0723dbf5 PA |
5220 | it = stop_reply_queue; |
5221 | it_link = &stop_reply_queue; | |
5222 | while (it) | |
c8e38a49 | 5223 | { |
0723dbf5 PA |
5224 | if (ptid_match (it->ptid, ptid)) |
5225 | { | |
5226 | *it_link = it->next; | |
5227 | it->next = NULL; | |
5228 | break; | |
5229 | } | |
e24a49d8 | 5230 | |
0723dbf5 PA |
5231 | it_link = &it->next; |
5232 | it = *it_link; | |
5233 | } | |
74531fed PA |
5234 | |
5235 | if (stop_reply_queue) | |
5236 | /* There's still at least an event left. */ | |
5237 | mark_async_event_handler (remote_async_inferior_event_token); | |
5238 | ||
5239 | return it; | |
5240 | } | |
5241 | ||
5242 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5243 | know that we now have at least one queued event left to pass to the | |
5244 | core side, tell the event loop to get back to target_wait soon. */ | |
5245 | ||
5246 | static void | |
5247 | push_stop_reply (struct stop_reply *new_event) | |
5248 | { | |
5249 | struct stop_reply *event; | |
5250 | ||
5251 | if (stop_reply_queue) | |
5252 | { | |
5253 | for (event = stop_reply_queue; | |
5254 | event && event->next; | |
5255 | event = event->next) | |
5256 | ; | |
5257 | ||
5258 | event->next = new_event; | |
5259 | } | |
5260 | else | |
5261 | stop_reply_queue = new_event; | |
5262 | ||
5263 | mark_async_event_handler (remote_async_inferior_event_token); | |
5264 | } | |
5265 | ||
5266 | /* Returns true if we have a stop reply for PTID. */ | |
5267 | ||
5268 | static int | |
5269 | peek_stop_reply (ptid_t ptid) | |
5270 | { | |
5271 | struct stop_reply *it; | |
5272 | ||
5273 | for (it = stop_reply_queue; it; it = it->next) | |
5274 | if (ptid_equal (ptid, it->ptid)) | |
5275 | { | |
5276 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5277 | return 1; | |
5278 | } | |
5279 | ||
5280 | return 0; | |
5281 | } | |
5282 | ||
5283 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5284 | result is stored in EVENT, or throws an error. */ | |
5285 | ||
5286 | static void | |
5287 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5288 | { | |
5289 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5290 | ULONGEST addr; | |
5291 | char *p; | |
5292 | ||
5293 | event->ptid = null_ptid; | |
5294 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5295 | event->ws.value.integer = 0; | |
5296 | event->solibs_changed = 0; | |
5297 | event->replay_event = 0; | |
5298 | event->stopped_by_watchpoint_p = 0; | |
5299 | event->regcache = NULL; | |
dc146f7c | 5300 | event->core = -1; |
74531fed PA |
5301 | |
5302 | switch (buf[0]) | |
5303 | { | |
5304 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5305 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5306 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5307 | ss = signal number | |
5308 | n... = register number | |
5309 | r... = register contents | |
5310 | */ | |
5311 | ||
5312 | p = &buf[3]; /* after Txx */ | |
5313 | while (*p) | |
5314 | { | |
5315 | char *p1; | |
5316 | char *p_temp; | |
5317 | int fieldsize; | |
5318 | LONGEST pnum = 0; | |
43ff13b4 | 5319 | |
cea39f65 MS |
5320 | /* If the packet contains a register number, save it in |
5321 | pnum and set p1 to point to the character following it. | |
5322 | Otherwise p1 points to p. */ | |
3c3bea1c | 5323 | |
cea39f65 MS |
5324 | /* If this packet is an awatch packet, don't parse the 'a' |
5325 | as a register number. */ | |
c8e38a49 | 5326 | |
dc146f7c VP |
5327 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5328 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5329 | { |
5330 | /* Read the ``P'' register number. */ | |
5331 | pnum = strtol (p, &p_temp, 16); | |
5332 | p1 = p_temp; | |
5333 | } | |
5334 | else | |
5335 | p1 = p; | |
802188a7 | 5336 | |
cea39f65 MS |
5337 | if (p1 == p) /* No register number present here. */ |
5338 | { | |
5339 | p1 = strchr (p, ':'); | |
5340 | if (p1 == NULL) | |
5341 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5342 | Packet: '%s'\n"), |
cea39f65 MS |
5343 | p, buf); |
5344 | if (strncmp (p, "thread", p1 - p) == 0) | |
5345 | event->ptid = read_ptid (++p1, &p); | |
5346 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5347 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5348 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5349 | { | |
5350 | event->stopped_by_watchpoint_p = 1; | |
5351 | p = unpack_varlen_hex (++p1, &addr); | |
5352 | event->watch_data_address = (CORE_ADDR) addr; | |
5353 | } | |
5354 | else if (strncmp (p, "library", p1 - p) == 0) | |
5355 | { | |
5356 | p1++; | |
5357 | p_temp = p1; | |
5358 | while (*p_temp && *p_temp != ';') | |
5359 | p_temp++; | |
c8e38a49 | 5360 | |
cea39f65 MS |
5361 | event->solibs_changed = 1; |
5362 | p = p_temp; | |
5363 | } | |
5364 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5365 | { | |
5366 | /* NO_HISTORY event. | |
5367 | p1 will indicate "begin" or "end", but | |
5368 | it makes no difference for now, so ignore it. */ | |
5369 | event->replay_event = 1; | |
5370 | p_temp = strchr (p1 + 1, ';'); | |
5371 | if (p_temp) | |
c8e38a49 | 5372 | p = p_temp; |
cea39f65 | 5373 | } |
dc146f7c VP |
5374 | else if (strncmp (p, "core", p1 - p) == 0) |
5375 | { | |
5376 | ULONGEST c; | |
a744cf53 | 5377 | |
dc146f7c VP |
5378 | p = unpack_varlen_hex (++p1, &c); |
5379 | event->core = c; | |
5380 | } | |
cea39f65 MS |
5381 | else |
5382 | { | |
5383 | /* Silently skip unknown optional info. */ | |
5384 | p_temp = strchr (p1 + 1, ';'); | |
5385 | if (p_temp) | |
5386 | p = p_temp; | |
5387 | } | |
5388 | } | |
5389 | else | |
5390 | { | |
5391 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5392 | cached_reg_t cached_reg; | |
74531fed | 5393 | |
cea39f65 | 5394 | p = p1; |
75c99385 | 5395 | |
cea39f65 MS |
5396 | if (*p != ':') |
5397 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5398 | Packet: '%s'\n"), |
cea39f65 MS |
5399 | p, buf); |
5400 | ++p; | |
43ff13b4 | 5401 | |
cea39f65 MS |
5402 | if (reg == NULL) |
5403 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5404 | Packet: '%s'\n"), |
7c47795c | 5405 | hex_string (pnum), p, buf); |
c8e38a49 | 5406 | |
cea39f65 | 5407 | cached_reg.num = reg->regnum; |
4100683b | 5408 | |
cea39f65 MS |
5409 | fieldsize = hex2bin (p, cached_reg.data, |
5410 | register_size (target_gdbarch, | |
5411 | reg->regnum)); | |
5412 | p += 2 * fieldsize; | |
5413 | if (fieldsize < register_size (target_gdbarch, | |
5414 | reg->regnum)) | |
5415 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5416 | |
cea39f65 MS |
5417 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5418 | } | |
c8e38a49 | 5419 | |
cea39f65 MS |
5420 | if (*p != ';') |
5421 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5422 | buf, p); | |
5423 | ++p; | |
5424 | } | |
c8e38a49 PA |
5425 | /* fall through */ |
5426 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5427 | if (event->solibs_changed) |
5428 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5429 | else if (event->replay_event) | |
5430 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5431 | else |
5432 | { | |
74531fed | 5433 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
2ea28649 | 5434 | event->ws.value.sig = (enum gdb_signal) |
c8e38a49 PA |
5435 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5436 | } | |
5437 | break; | |
5438 | case 'W': /* Target exited. */ | |
5439 | case 'X': | |
5440 | { | |
5441 | char *p; | |
5442 | int pid; | |
5443 | ULONGEST value; | |
82f73884 | 5444 | |
c8e38a49 PA |
5445 | /* GDB used to accept only 2 hex chars here. Stubs should |
5446 | only send more if they detect GDB supports multi-process | |
5447 | support. */ | |
5448 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5449 | |
c8e38a49 PA |
5450 | if (buf[0] == 'W') |
5451 | { | |
5452 | /* The remote process exited. */ | |
74531fed PA |
5453 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5454 | event->ws.value.integer = value; | |
c8e38a49 PA |
5455 | } |
5456 | else | |
5457 | { | |
5458 | /* The remote process exited with a signal. */ | |
74531fed | 5459 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
2ea28649 | 5460 | event->ws.value.sig = (enum gdb_signal) value; |
c8e38a49 | 5461 | } |
82f73884 | 5462 | |
c8e38a49 PA |
5463 | /* If no process is specified, assume inferior_ptid. */ |
5464 | pid = ptid_get_pid (inferior_ptid); | |
5465 | if (*p == '\0') | |
5466 | ; | |
5467 | else if (*p == ';') | |
5468 | { | |
5469 | p++; | |
5470 | ||
5471 | if (p == '\0') | |
82f73884 | 5472 | ; |
c8e38a49 PA |
5473 | else if (strncmp (p, |
5474 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5475 | { |
c8e38a49 | 5476 | ULONGEST upid; |
a744cf53 | 5477 | |
c8e38a49 PA |
5478 | p += sizeof ("process:") - 1; |
5479 | unpack_varlen_hex (p, &upid); | |
5480 | pid = upid; | |
82f73884 PA |
5481 | } |
5482 | else | |
5483 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5484 | } |
c8e38a49 PA |
5485 | else |
5486 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5487 | event->ptid = pid_to_ptid (pid); |
5488 | } | |
5489 | break; | |
5490 | } | |
5491 | ||
5492 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5493 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5494 | } | |
5495 | ||
5496 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5497 | stop notification (%Stop). Those can come it at any time, hence, | |
5498 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5499 | making is finished, before querying the stub for more events with | |
5500 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5501 | upon receiving the %Stop notification, something like this could | |
5502 | happen: | |
5503 | ||
5504 | 1.1) --> Hg 1 | |
5505 | 1.2) <-- OK | |
5506 | 1.3) --> g | |
5507 | 1.4) <-- %Stop | |
5508 | 1.5) --> vStopped | |
5509 | 1.6) <-- (registers reply to step #1.3) | |
5510 | ||
5511 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5512 | query. | |
5513 | ||
5514 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5515 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5516 | doing whatever we were doing: | |
5517 | ||
5518 | 2.1) --> Hg 1 | |
5519 | 2.2) <-- OK | |
5520 | 2.3) --> g | |
5521 | 2.4) <-- %Stop | |
5522 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5523 | 2.5) <-- (registers reply to step #2.3) | |
5524 | ||
5525 | Eventualy after step #2.5, we return to the event loop, which | |
5526 | notices there's an event on the | |
5527 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5528 | associated callback --- the function below. At this point, we're | |
5529 | always safe to start a vStopped sequence. : | |
5530 | ||
5531 | 2.6) --> vStopped | |
5532 | 2.7) <-- T05 thread:2 | |
5533 | 2.8) --> vStopped | |
5534 | 2.9) --> OK | |
5535 | */ | |
5536 | ||
5537 | static void | |
5538 | remote_get_pending_stop_replies (void) | |
5539 | { | |
5540 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5541 | |
5542 | if (pending_stop_reply) | |
5543 | { | |
5544 | /* acknowledge */ | |
5545 | putpkt ("vStopped"); | |
5546 | ||
5547 | /* Now we can rely on it. */ | |
5548 | push_stop_reply (pending_stop_reply); | |
5549 | pending_stop_reply = NULL; | |
5550 | ||
5551 | while (1) | |
5552 | { | |
5553 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5554 | if (strcmp (rs->buf, "OK") == 0) | |
5555 | break; | |
5556 | else | |
5557 | { | |
5558 | struct cleanup *old_chain; | |
5559 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5560 | ||
5561 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5562 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5563 | ||
5564 | /* acknowledge */ | |
5565 | putpkt ("vStopped"); | |
5566 | ||
5567 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5568 | { | |
5569 | /* Now we can rely on it. */ | |
5570 | discard_cleanups (old_chain); | |
5571 | push_stop_reply (stop_reply); | |
5572 | } | |
5573 | else | |
5574 | /* We got an unknown stop reply. */ | |
5575 | do_cleanups (old_chain); | |
5576 | } | |
5577 | } | |
5578 | } | |
5579 | } | |
5580 | ||
5581 | ||
5582 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5583 | event that is to be returned to the core. This function always | |
5584 | destroys STOP_REPLY. */ | |
5585 | ||
5586 | static ptid_t | |
5587 | process_stop_reply (struct stop_reply *stop_reply, | |
5588 | struct target_waitstatus *status) | |
5589 | { | |
5590 | ptid_t ptid; | |
5591 | ||
5592 | *status = stop_reply->ws; | |
5593 | ptid = stop_reply->ptid; | |
5594 | ||
5595 | /* If no thread/process was reported by the stub, assume the current | |
5596 | inferior. */ | |
5597 | if (ptid_equal (ptid, null_ptid)) | |
5598 | ptid = inferior_ptid; | |
5599 | ||
5f3563ea PA |
5600 | if (status->kind != TARGET_WAITKIND_EXITED |
5601 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5602 | { |
5f3563ea PA |
5603 | /* Expedited registers. */ |
5604 | if (stop_reply->regcache) | |
5605 | { | |
217f1f79 UW |
5606 | struct regcache *regcache |
5607 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5608 | cached_reg_t *reg; |
5609 | int ix; | |
5610 | ||
5611 | for (ix = 0; | |
5612 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5613 | ix++) | |
217f1f79 | 5614 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5615 | VEC_free (cached_reg_t, stop_reply->regcache); |
5616 | } | |
74531fed | 5617 | |
5f3563ea PA |
5618 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5619 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5620 | |
5621 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5622 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5623 | } |
5624 | ||
74531fed PA |
5625 | stop_reply_xfree (stop_reply); |
5626 | return ptid; | |
5627 | } | |
5628 | ||
5629 | /* The non-stop mode version of target_wait. */ | |
5630 | ||
5631 | static ptid_t | |
47608cb1 | 5632 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5633 | { |
5634 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5635 | struct stop_reply *stop_reply; |
5636 | int ret; | |
5637 | ||
5638 | /* If in non-stop mode, get out of getpkt even if a | |
5639 | notification is received. */ | |
5640 | ||
5641 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5642 | 0 /* forever */); | |
5643 | while (1) | |
5644 | { | |
5645 | if (ret != -1) | |
5646 | switch (rs->buf[0]) | |
5647 | { | |
5648 | case 'E': /* Error of some sort. */ | |
5649 | /* We're out of sync with the target now. Did it continue | |
5650 | or not? We can't tell which thread it was in non-stop, | |
5651 | so just ignore this. */ | |
5652 | warning (_("Remote failure reply: %s"), rs->buf); | |
5653 | break; | |
5654 | case 'O': /* Console output. */ | |
5655 | remote_console_output (rs->buf + 1); | |
5656 | break; | |
5657 | default: | |
5658 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5659 | break; | |
5660 | } | |
5661 | ||
5662 | /* Acknowledge a pending stop reply that may have arrived in the | |
5663 | mean time. */ | |
5664 | if (pending_stop_reply != NULL) | |
5665 | remote_get_pending_stop_replies (); | |
5666 | ||
5667 | /* If indeed we noticed a stop reply, we're done. */ | |
5668 | stop_reply = queued_stop_reply (ptid); | |
5669 | if (stop_reply != NULL) | |
5670 | return process_stop_reply (stop_reply, status); | |
5671 | ||
47608cb1 | 5672 | /* Still no event. If we're just polling for an event, then |
74531fed | 5673 | return to the event loop. */ |
47608cb1 | 5674 | if (options & TARGET_WNOHANG) |
74531fed PA |
5675 | { |
5676 | status->kind = TARGET_WAITKIND_IGNORE; | |
5677 | return minus_one_ptid; | |
5678 | } | |
5679 | ||
47608cb1 | 5680 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5681 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5682 | 1 /* forever */); | |
5683 | } | |
5684 | } | |
5685 | ||
5686 | /* Wait until the remote machine stops, then return, storing status in | |
5687 | STATUS just as `wait' would. */ | |
5688 | ||
5689 | static ptid_t | |
47608cb1 | 5690 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5691 | { |
5692 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5693 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5694 | char *buf; |
74531fed PA |
5695 | struct stop_reply *stop_reply; |
5696 | ||
47608cb1 PA |
5697 | again: |
5698 | ||
74531fed PA |
5699 | status->kind = TARGET_WAITKIND_IGNORE; |
5700 | status->value.integer = 0; | |
5701 | ||
5702 | stop_reply = queued_stop_reply (ptid); | |
5703 | if (stop_reply != NULL) | |
5704 | return process_stop_reply (stop_reply, status); | |
5705 | ||
5706 | if (rs->cached_wait_status) | |
5707 | /* Use the cached wait status, but only once. */ | |
5708 | rs->cached_wait_status = 0; | |
5709 | else | |
5710 | { | |
5711 | int ret; | |
5712 | ||
5713 | if (!target_is_async_p ()) | |
5714 | { | |
5715 | ofunc = signal (SIGINT, remote_interrupt); | |
5716 | /* If the user hit C-c before this packet, or between packets, | |
5717 | pretend that it was hit right here. */ | |
522002f9 | 5718 | if (check_quit_flag ()) |
74531fed | 5719 | { |
522002f9 | 5720 | clear_quit_flag (); |
74531fed PA |
5721 | remote_interrupt (SIGINT); |
5722 | } | |
5723 | } | |
5724 | ||
5725 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5726 | _never_ wait for ever -> test on target_is_async_p(). | |
5727 | However, before we do that we need to ensure that the caller | |
5728 | knows how to take the target into/out of async mode. */ | |
5729 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5730 | if (!target_is_async_p ()) | |
5731 | signal (SIGINT, ofunc); | |
5732 | } | |
5733 | ||
5734 | buf = rs->buf; | |
5735 | ||
5736 | remote_stopped_by_watchpoint_p = 0; | |
5737 | ||
5738 | /* We got something. */ | |
5739 | rs->waiting_for_stop_reply = 0; | |
5740 | ||
3a29589a DJ |
5741 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5742 | an 'F' or 'O' packet. */ | |
5743 | if (buf[0] != 'F' && buf[0] != 'O') | |
5744 | rs->ctrlc_pending_p = 0; | |
5745 | ||
74531fed PA |
5746 | switch (buf[0]) |
5747 | { | |
5748 | case 'E': /* Error of some sort. */ | |
5749 | /* We're out of sync with the target now. Did it continue or | |
5750 | not? Not is more likely, so report a stop. */ | |
5751 | warning (_("Remote failure reply: %s"), buf); | |
5752 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 5753 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
5754 | break; |
5755 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5756 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5757 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5758 | break; |
5759 | case 'T': case 'S': case 'X': case 'W': | |
5760 | { | |
5761 | struct stop_reply *stop_reply; | |
5762 | struct cleanup *old_chain; | |
5763 | ||
5764 | stop_reply = stop_reply_xmalloc (); | |
5765 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5766 | remote_parse_stop_reply (buf, stop_reply); | |
5767 | discard_cleanups (old_chain); | |
5768 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5769 | break; |
5770 | } | |
5771 | case 'O': /* Console output. */ | |
5772 | remote_console_output (buf + 1); | |
e24a49d8 | 5773 | |
c8e38a49 PA |
5774 | /* The target didn't really stop; keep waiting. */ |
5775 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5776 | |
c8e38a49 PA |
5777 | break; |
5778 | case '\0': | |
a493e3e2 | 5779 | if (last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
5780 | { |
5781 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5782 | remote system doesn't support it. */ | |
5783 | target_terminal_ours_for_output (); | |
5784 | printf_filtered | |
5785 | ("Can't send signals to this remote system. %s not sent.\n", | |
2ea28649 | 5786 | gdb_signal_to_name (last_sent_signal)); |
a493e3e2 | 5787 | last_sent_signal = GDB_SIGNAL_0; |
c8e38a49 PA |
5788 | target_terminal_inferior (); |
5789 | ||
5790 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5791 | putpkt ((char *) buf); | |
5792 | ||
5793 | /* We just told the target to resume, so a stop reply is in | |
5794 | order. */ | |
e24a49d8 | 5795 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5796 | break; |
43ff13b4 | 5797 | } |
c8e38a49 PA |
5798 | /* else fallthrough */ |
5799 | default: | |
5800 | warning (_("Invalid remote reply: %s"), buf); | |
5801 | /* Keep waiting. */ | |
5802 | rs->waiting_for_stop_reply = 1; | |
5803 | break; | |
43ff13b4 | 5804 | } |
c8e38a49 | 5805 | |
c8e38a49 | 5806 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5807 | { |
5808 | /* Nothing interesting happened. If we're doing a non-blocking | |
5809 | poll, we're done. Otherwise, go back to waiting. */ | |
5810 | if (options & TARGET_WNOHANG) | |
5811 | return minus_one_ptid; | |
5812 | else | |
5813 | goto again; | |
5814 | } | |
74531fed PA |
5815 | else if (status->kind != TARGET_WAITKIND_EXITED |
5816 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5817 | { |
5818 | if (!ptid_equal (event_ptid, null_ptid)) | |
5819 | record_currthread (event_ptid); | |
5820 | else | |
5821 | event_ptid = inferior_ptid; | |
43ff13b4 | 5822 | } |
74531fed PA |
5823 | else |
5824 | /* A process exit. Invalidate our notion of current thread. */ | |
5825 | record_currthread (minus_one_ptid); | |
79d7f229 | 5826 | |
82f73884 | 5827 | return event_ptid; |
43ff13b4 JM |
5828 | } |
5829 | ||
74531fed PA |
5830 | /* Wait until the remote machine stops, then return, storing status in |
5831 | STATUS just as `wait' would. */ | |
5832 | ||
c8e38a49 | 5833 | static ptid_t |
117de6a9 | 5834 | remote_wait (struct target_ops *ops, |
47608cb1 | 5835 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5836 | { |
5837 | ptid_t event_ptid; | |
5838 | ||
74531fed | 5839 | if (non_stop) |
47608cb1 | 5840 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5841 | else |
47608cb1 | 5842 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5843 | |
74531fed | 5844 | if (target_can_async_p ()) |
c8e38a49 | 5845 | { |
74531fed PA |
5846 | /* If there are are events left in the queue tell the event loop |
5847 | to return here. */ | |
5848 | if (stop_reply_queue) | |
5849 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5850 | } |
c8e38a49 PA |
5851 | |
5852 | return event_ptid; | |
5853 | } | |
5854 | ||
74ca34ce | 5855 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5856 | |
b96ec7ac | 5857 | static int |
56be3814 | 5858 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5859 | { |
5860 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5861 | char *buf, *p; |
b96ec7ac AC |
5862 | char regp[MAX_REGISTER_SIZE]; |
5863 | int i; | |
5864 | ||
74ca34ce DJ |
5865 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5866 | return 0; | |
5867 | ||
5868 | if (reg->pnum == -1) | |
5869 | return 0; | |
5870 | ||
2e9f7625 | 5871 | p = rs->buf; |
fcad0fa4 | 5872 | *p++ = 'p'; |
74ca34ce | 5873 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5874 | *p++ = '\0'; |
1f4437a4 MS |
5875 | putpkt (rs->buf); |
5876 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5877 | |
2e9f7625 DJ |
5878 | buf = rs->buf; |
5879 | ||
74ca34ce DJ |
5880 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5881 | { | |
5882 | case PACKET_OK: | |
5883 | break; | |
5884 | case PACKET_UNKNOWN: | |
5885 | return 0; | |
5886 | case PACKET_ERROR: | |
27a9c0bf MS |
5887 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5888 | gdbarch_register_name (get_regcache_arch (regcache), | |
5889 | reg->regnum), | |
5890 | buf); | |
74ca34ce | 5891 | } |
3f9a994c JB |
5892 | |
5893 | /* If this register is unfetchable, tell the regcache. */ | |
5894 | if (buf[0] == 'x') | |
8480adf2 | 5895 | { |
56be3814 | 5896 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5897 | return 1; |
b96ec7ac | 5898 | } |
b96ec7ac | 5899 | |
3f9a994c JB |
5900 | /* Otherwise, parse and supply the value. */ |
5901 | p = buf; | |
5902 | i = 0; | |
5903 | while (p[0] != 0) | |
5904 | { | |
5905 | if (p[1] == 0) | |
74ca34ce | 5906 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5907 | |
5908 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5909 | p += 2; | |
5910 | } | |
56be3814 | 5911 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5912 | return 1; |
b96ec7ac AC |
5913 | } |
5914 | ||
74ca34ce DJ |
5915 | /* Fetch the registers included in the target's 'g' packet. */ |
5916 | ||
29709017 DJ |
5917 | static int |
5918 | send_g_packet (void) | |
c906108c | 5919 | { |
d01949b6 | 5920 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5921 | int buf_len; |
c906108c | 5922 | |
bba74b36 | 5923 | xsnprintf (rs->buf, get_remote_packet_size (), "g"); |
74ca34ce | 5924 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 5925 | |
29709017 DJ |
5926 | /* We can get out of synch in various cases. If the first character |
5927 | in the buffer is not a hex character, assume that has happened | |
5928 | and try to fetch another packet to read. */ | |
5929 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5930 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5931 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5932 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5933 | { | |
5934 | if (remote_debug) | |
5935 | fprintf_unfiltered (gdb_stdlog, | |
5936 | "Bad register packet; fetching a new packet\n"); | |
5937 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5938 | } | |
5939 | ||
74ca34ce DJ |
5940 | buf_len = strlen (rs->buf); |
5941 | ||
5942 | /* Sanity check the received packet. */ | |
5943 | if (buf_len % 2 != 0) | |
5944 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5945 | |
5946 | return buf_len / 2; | |
5947 | } | |
5948 | ||
5949 | static void | |
56be3814 | 5950 | process_g_packet (struct regcache *regcache) |
29709017 | 5951 | { |
4a22f64d | 5952 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5953 | struct remote_state *rs = get_remote_state (); |
5954 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5955 | int i, buf_len; | |
5956 | char *p; | |
5957 | char *regs; | |
5958 | ||
5959 | buf_len = strlen (rs->buf); | |
5960 | ||
5961 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5962 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5963 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5964 | ||
5965 | /* Save the size of the packet sent to us by the target. It is used | |
5966 | as a heuristic when determining the max size of packets that the | |
5967 | target can safely receive. */ | |
5968 | if (rsa->actual_register_packet_size == 0) | |
5969 | rsa->actual_register_packet_size = buf_len; | |
5970 | ||
5971 | /* If this is smaller than we guessed the 'g' packet would be, | |
5972 | update our records. A 'g' reply that doesn't include a register's | |
5973 | value implies either that the register is not available, or that | |
5974 | the 'p' packet must be used. */ | |
5975 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5976 | { |
74ca34ce DJ |
5977 | rsa->sizeof_g_packet = buf_len / 2; |
5978 | ||
4a22f64d | 5979 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5980 | { |
74ca34ce DJ |
5981 | if (rsa->regs[i].pnum == -1) |
5982 | continue; | |
5983 | ||
5984 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5985 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5986 | else |
74ca34ce | 5987 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5988 | } |
74ca34ce | 5989 | } |
b323314b | 5990 | |
74ca34ce | 5991 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5992 | |
5993 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5994 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5995 | |
c906108c SS |
5996 | /* Reply describes registers byte by byte, each byte encoded as two |
5997 | hex characters. Suck them all up, then supply them to the | |
5998 | register cacheing/storage mechanism. */ | |
5999 | ||
74ca34ce | 6000 | p = rs->buf; |
ea9c271d | 6001 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 6002 | { |
74ca34ce DJ |
6003 | if (p[0] == 0 || p[1] == 0) |
6004 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
6005 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6006 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 6007 | |
c906108c | 6008 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 6009 | regs[i] = 0; /* 'x' */ |
c906108c SS |
6010 | else |
6011 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
6012 | p += 2; | |
6013 | } | |
6014 | ||
a744cf53 MS |
6015 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
6016 | { | |
6017 | struct packet_reg *r = &rsa->regs[i]; | |
6018 | ||
6019 | if (r->in_g_packet) | |
6020 | { | |
6021 | if (r->offset * 2 >= strlen (rs->buf)) | |
6022 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
6023 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6024 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
6025 | else if (rs->buf[r->offset * 2] == 'x') |
6026 | { | |
6027 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
6028 | /* The register isn't available, mark it as such (at | |
6029 | the same time setting the value to zero). */ | |
6030 | regcache_raw_supply (regcache, r->regnum, NULL); | |
6031 | } | |
6032 | else | |
6033 | regcache_raw_supply (regcache, r->regnum, | |
6034 | regs + r->offset); | |
6035 | } | |
6036 | } | |
c906108c SS |
6037 | } |
6038 | ||
29709017 | 6039 | static void |
56be3814 | 6040 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
6041 | { |
6042 | send_g_packet (); | |
56be3814 | 6043 | process_g_packet (regcache); |
29709017 DJ |
6044 | } |
6045 | ||
e6e4e701 PA |
6046 | /* Make the remote selected traceframe match GDB's selected |
6047 | traceframe. */ | |
6048 | ||
6049 | static void | |
6050 | set_remote_traceframe (void) | |
6051 | { | |
6052 | int newnum; | |
6053 | ||
6054 | if (remote_traceframe_number == get_traceframe_number ()) | |
6055 | return; | |
6056 | ||
6057 | /* Avoid recursion, remote_trace_find calls us again. */ | |
6058 | remote_traceframe_number = get_traceframe_number (); | |
6059 | ||
6060 | newnum = target_trace_find (tfind_number, | |
6061 | get_traceframe_number (), 0, 0, NULL); | |
6062 | ||
6063 | /* Should not happen. If it does, all bets are off. */ | |
6064 | if (newnum != get_traceframe_number ()) | |
6065 | warning (_("could not set remote traceframe")); | |
6066 | } | |
6067 | ||
74ca34ce | 6068 | static void |
28439f5e PA |
6069 | remote_fetch_registers (struct target_ops *ops, |
6070 | struct regcache *regcache, int regnum) | |
74ca34ce | 6071 | { |
74ca34ce DJ |
6072 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6073 | int i; | |
6074 | ||
e6e4e701 | 6075 | set_remote_traceframe (); |
79d7f229 | 6076 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6077 | |
6078 | if (regnum >= 0) | |
6079 | { | |
6080 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6081 | |
74ca34ce DJ |
6082 | gdb_assert (reg != NULL); |
6083 | ||
6084 | /* If this register might be in the 'g' packet, try that first - | |
6085 | we are likely to read more than one register. If this is the | |
6086 | first 'g' packet, we might be overly optimistic about its | |
6087 | contents, so fall back to 'p'. */ | |
6088 | if (reg->in_g_packet) | |
6089 | { | |
56be3814 | 6090 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
6091 | if (reg->in_g_packet) |
6092 | return; | |
6093 | } | |
6094 | ||
56be3814 | 6095 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
6096 | return; |
6097 | ||
6098 | /* This register is not available. */ | |
56be3814 | 6099 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
6100 | |
6101 | return; | |
6102 | } | |
6103 | ||
56be3814 | 6104 | fetch_registers_using_g (regcache); |
74ca34ce | 6105 | |
4a22f64d | 6106 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6107 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6108 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6109 | { |
6110 | /* This register is not available. */ | |
56be3814 | 6111 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
6112 | } |
6113 | } | |
6114 | ||
c906108c SS |
6115 | /* Prepare to store registers. Since we may send them all (using a |
6116 | 'G' request), we have to read out the ones we don't want to change | |
6117 | first. */ | |
6118 | ||
c5aa993b | 6119 | static void |
316f2060 | 6120 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 6121 | { |
ea9c271d | 6122 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 6123 | int i; |
cfd77fa1 | 6124 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 6125 | |
c906108c | 6126 | /* Make sure the entire registers array is valid. */ |
444abaca | 6127 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
6128 | { |
6129 | case PACKET_DISABLE: | |
6130 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 6131 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 6132 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 6133 | if (rsa->regs[i].in_g_packet) |
316f2060 | 6134 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6135 | break; |
6136 | case PACKET_ENABLE: | |
6137 | break; | |
6138 | } | |
6139 | } | |
6140 | ||
ad10f812 | 6141 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6142 | packet was not recognized. */ |
5a2468f5 JM |
6143 | |
6144 | static int | |
1f4437a4 MS |
6145 | store_register_using_P (const struct regcache *regcache, |
6146 | struct packet_reg *reg) | |
5a2468f5 | 6147 | { |
4a22f64d | 6148 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6149 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6150 | /* Try storing a single register. */ |
6d820c5c | 6151 | char *buf = rs->buf; |
cfd77fa1 | 6152 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6153 | char *p; |
5a2468f5 | 6154 | |
74ca34ce DJ |
6155 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6156 | return 0; | |
6157 | ||
6158 | if (reg->pnum == -1) | |
6159 | return 0; | |
6160 | ||
ea9c271d | 6161 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6162 | p = buf + strlen (buf); |
56be3814 | 6163 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6164 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6165 | putpkt (rs->buf); |
6166 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6167 | |
74ca34ce DJ |
6168 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6169 | { | |
6170 | case PACKET_OK: | |
6171 | return 1; | |
6172 | case PACKET_ERROR: | |
27a9c0bf MS |
6173 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6174 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6175 | case PACKET_UNKNOWN: |
6176 | return 0; | |
6177 | default: | |
6178 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6179 | } | |
c906108c SS |
6180 | } |
6181 | ||
23860348 MS |
6182 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6183 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6184 | |
6185 | static void | |
56be3814 | 6186 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6187 | { |
d01949b6 | 6188 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6189 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6190 | gdb_byte *regs; |
c906108c SS |
6191 | char *p; |
6192 | ||
193cb69f AC |
6193 | /* Extract all the registers in the regcache copying them into a |
6194 | local buffer. */ | |
6195 | { | |
b323314b | 6196 | int i; |
a744cf53 | 6197 | |
ea9c271d DJ |
6198 | regs = alloca (rsa->sizeof_g_packet); |
6199 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6200 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6201 | { |
ea9c271d | 6202 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6203 | |
b323314b | 6204 | if (r->in_g_packet) |
56be3814 | 6205 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6206 | } |
6207 | } | |
c906108c SS |
6208 | |
6209 | /* Command describes registers byte by byte, | |
6210 | each byte encoded as two hex characters. */ | |
6d820c5c | 6211 | p = rs->buf; |
193cb69f | 6212 | *p++ = 'G'; |
74ca34ce DJ |
6213 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6214 | updated. */ | |
6215 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6216 | putpkt (rs->buf); |
6217 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6218 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6219 | error (_("Could not write registers; remote failure reply '%s'"), |
6220 | rs->buf); | |
c906108c | 6221 | } |
74ca34ce DJ |
6222 | |
6223 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6224 | of the register cache buffer. FIXME: ignores errors. */ | |
6225 | ||
6226 | static void | |
28439f5e PA |
6227 | remote_store_registers (struct target_ops *ops, |
6228 | struct regcache *regcache, int regnum) | |
74ca34ce | 6229 | { |
74ca34ce DJ |
6230 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6231 | int i; | |
6232 | ||
e6e4e701 | 6233 | set_remote_traceframe (); |
79d7f229 | 6234 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6235 | |
6236 | if (regnum >= 0) | |
6237 | { | |
6238 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6239 | |
74ca34ce DJ |
6240 | gdb_assert (reg != NULL); |
6241 | ||
6242 | /* Always prefer to store registers using the 'P' packet if | |
6243 | possible; we often change only a small number of registers. | |
6244 | Sometimes we change a larger number; we'd need help from a | |
6245 | higher layer to know to use 'G'. */ | |
56be3814 | 6246 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6247 | return; |
6248 | ||
6249 | /* For now, don't complain if we have no way to write the | |
6250 | register. GDB loses track of unavailable registers too | |
6251 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6252 | any way to read the register, either... */ |
74ca34ce DJ |
6253 | if (!reg->in_g_packet) |
6254 | return; | |
6255 | ||
56be3814 | 6256 | store_registers_using_G (regcache); |
74ca34ce DJ |
6257 | return; |
6258 | } | |
6259 | ||
56be3814 | 6260 | store_registers_using_G (regcache); |
74ca34ce | 6261 | |
4a22f64d | 6262 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6263 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6264 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6265 | /* See above for why we do not issue an error here. */ |
6266 | continue; | |
6267 | } | |
c906108c SS |
6268 | \f |
6269 | ||
6270 | /* Return the number of hex digits in num. */ | |
6271 | ||
6272 | static int | |
fba45db2 | 6273 | hexnumlen (ULONGEST num) |
c906108c SS |
6274 | { |
6275 | int i; | |
6276 | ||
6277 | for (i = 0; num != 0; i++) | |
6278 | num >>= 4; | |
6279 | ||
6280 | return max (i, 1); | |
6281 | } | |
6282 | ||
2df3850c | 6283 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6284 | |
6285 | static int | |
fba45db2 | 6286 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6287 | { |
c906108c | 6288 | int len = hexnumlen (num); |
a744cf53 | 6289 | |
2df3850c JM |
6290 | return hexnumnstr (buf, num, len); |
6291 | } | |
6292 | ||
c906108c | 6293 | |
2df3850c | 6294 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6295 | |
2df3850c | 6296 | static int |
fba45db2 | 6297 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6298 | { |
6299 | int i; | |
6300 | ||
6301 | buf[width] = '\0'; | |
6302 | ||
6303 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6304 | { |
c5aa993b | 6305 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6306 | num >>= 4; |
6307 | } | |
6308 | ||
2df3850c | 6309 | return width; |
c906108c SS |
6310 | } |
6311 | ||
23860348 | 6312 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6313 | |
6314 | static CORE_ADDR | |
fba45db2 | 6315 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6316 | { |
883b9c6c | 6317 | unsigned int address_size = remote_address_size; |
a744cf53 | 6318 | |
911c95a5 UW |
6319 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6320 | if (!address_size) | |
1cf3db46 | 6321 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6322 | |
6323 | if (address_size > 0 | |
6324 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6325 | { |
6326 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6327 | in a ULONGEST variable. */ |
c906108c | 6328 | ULONGEST mask = 1; |
a744cf53 | 6329 | |
911c95a5 | 6330 | mask = (mask << address_size) - 1; |
c906108c SS |
6331 | addr &= mask; |
6332 | } | |
6333 | return addr; | |
6334 | } | |
6335 | ||
a31ea83d DJ |
6336 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6337 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6338 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6339 | (which may be more than *OUT_LEN due to escape characters). The | |
6340 | total number of bytes in the output buffer will be at most | |
6341 | OUT_MAXLEN. */ | |
6342 | ||
6343 | static int | |
6344 | remote_escape_output (const gdb_byte *buffer, int len, | |
6345 | gdb_byte *out_buf, int *out_len, | |
6346 | int out_maxlen) | |
6347 | { | |
6348 | int input_index, output_index; | |
6349 | ||
6350 | output_index = 0; | |
6351 | for (input_index = 0; input_index < len; input_index++) | |
6352 | { | |
6353 | gdb_byte b = buffer[input_index]; | |
6354 | ||
6355 | if (b == '$' || b == '#' || b == '}') | |
6356 | { | |
6357 | /* These must be escaped. */ | |
6358 | if (output_index + 2 > out_maxlen) | |
6359 | break; | |
6360 | out_buf[output_index++] = '}'; | |
6361 | out_buf[output_index++] = b ^ 0x20; | |
6362 | } | |
6363 | else | |
6364 | { | |
6365 | if (output_index + 1 > out_maxlen) | |
6366 | break; | |
6367 | out_buf[output_index++] = b; | |
6368 | } | |
6369 | } | |
6370 | ||
6371 | *out_len = input_index; | |
6372 | return output_index; | |
6373 | } | |
6374 | ||
0876f84a DJ |
6375 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6376 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6377 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6378 | ||
6379 | This function reverses remote_escape_output. It allows more | |
6380 | escaped characters than that function does, in particular because | |
6381 | '*' must be escaped to avoid the run-length encoding processing | |
6382 | in reading packets. */ | |
6383 | ||
6384 | static int | |
6385 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6386 | gdb_byte *out_buf, int out_maxlen) | |
6387 | { | |
6388 | int input_index, output_index; | |
6389 | int escaped; | |
6390 | ||
6391 | output_index = 0; | |
6392 | escaped = 0; | |
6393 | for (input_index = 0; input_index < len; input_index++) | |
6394 | { | |
6395 | gdb_byte b = buffer[input_index]; | |
6396 | ||
6397 | if (output_index + 1 > out_maxlen) | |
6398 | { | |
6399 | warning (_("Received too much data from remote target;" | |
6400 | " ignoring overflow.")); | |
6401 | return output_index; | |
6402 | } | |
6403 | ||
6404 | if (escaped) | |
6405 | { | |
6406 | out_buf[output_index++] = b ^ 0x20; | |
6407 | escaped = 0; | |
6408 | } | |
6409 | else if (b == '}') | |
6410 | escaped = 1; | |
6411 | else | |
6412 | out_buf[output_index++] = b; | |
6413 | } | |
6414 | ||
6415 | if (escaped) | |
6416 | error (_("Unmatched escape character in target response.")); | |
6417 | ||
6418 | return output_index; | |
6419 | } | |
6420 | ||
c906108c SS |
6421 | /* Determine whether the remote target supports binary downloading. |
6422 | This is accomplished by sending a no-op memory write of zero length | |
6423 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6424 | the whole packet, since many stubs strip the eighth bit and |
6425 | subsequently compute a wrong checksum, which causes real havoc with | |
6426 | remote_write_bytes. | |
7a292a7a | 6427 | |
96baa820 | 6428 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6429 | clean. In cases like this, the user should clear "remote |
23860348 | 6430 | X-packet". */ |
96baa820 | 6431 | |
c906108c | 6432 | static void |
fba45db2 | 6433 | check_binary_download (CORE_ADDR addr) |
c906108c | 6434 | { |
d01949b6 | 6435 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6436 | |
444abaca | 6437 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6438 | { |
96baa820 JM |
6439 | case PACKET_DISABLE: |
6440 | break; | |
6441 | case PACKET_ENABLE: | |
6442 | break; | |
6443 | case PACKET_SUPPORT_UNKNOWN: | |
6444 | { | |
96baa820 | 6445 | char *p; |
802188a7 | 6446 | |
2e9f7625 | 6447 | p = rs->buf; |
96baa820 JM |
6448 | *p++ = 'X'; |
6449 | p += hexnumstr (p, (ULONGEST) addr); | |
6450 | *p++ = ','; | |
6451 | p += hexnumstr (p, (ULONGEST) 0); | |
6452 | *p++ = ':'; | |
6453 | *p = '\0'; | |
802188a7 | 6454 | |
2e9f7625 | 6455 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6456 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6457 | |
2e9f7625 | 6458 | if (rs->buf[0] == '\0') |
96baa820 JM |
6459 | { |
6460 | if (remote_debug) | |
6461 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6462 | "binary downloading NOT " |
6463 | "supported by target\n"); | |
444abaca | 6464 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6465 | } |
6466 | else | |
6467 | { | |
6468 | if (remote_debug) | |
6469 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6470 | "binary downloading supported by target\n"); |
444abaca | 6471 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6472 | } |
6473 | break; | |
6474 | } | |
c906108c SS |
6475 | } |
6476 | } | |
6477 | ||
6478 | /* Write memory data directly to the remote machine. | |
6479 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6480 | HEADER is the starting part of the packet. |
c906108c SS |
6481 | MEMADDR is the address in the remote memory space. |
6482 | MYADDR is the address of the buffer in our space. | |
6483 | LEN is the number of bytes. | |
a76d924d DJ |
6484 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6485 | should send data as binary ('X'), or hex-encoded ('M'). | |
6486 | ||
6487 | The function creates packet of the form | |
6488 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6489 | ||
6490 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6491 | ||
6492 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6493 | are omitted. | |
6494 | ||
6495 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6496 | error. Only transfer a single packet. */ |
c906108c | 6497 | |
a76d924d DJ |
6498 | static int |
6499 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
45aa4659 | 6500 | const gdb_byte *myaddr, ssize_t len, |
a76d924d | 6501 | char packet_format, int use_length) |
c906108c | 6502 | { |
6d820c5c | 6503 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6504 | char *p; |
a76d924d DJ |
6505 | char *plen = NULL; |
6506 | int plenlen = 0; | |
917317f4 JM |
6507 | int todo; |
6508 | int nr_bytes; | |
a257b5bb | 6509 | int payload_size; |
6765f3e5 | 6510 | int payload_length; |
a76d924d DJ |
6511 | int header_length; |
6512 | ||
6513 | if (packet_format != 'X' && packet_format != 'M') | |
6514 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6515 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6516 | |
b2182ed2 DJ |
6517 | if (len <= 0) |
6518 | return 0; | |
6519 | ||
3de11b2e | 6520 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6521 | |
6d820c5c DJ |
6522 | /* The packet buffer will be large enough for the payload; |
6523 | get_memory_packet_size ensures this. */ | |
a76d924d | 6524 | rs->buf[0] = '\0'; |
c906108c | 6525 | |
a257b5bb | 6526 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6527 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6528 | ||
a76d924d DJ |
6529 | payload_size -= strlen ("$,:#NN"); |
6530 | if (!use_length) | |
0df8b418 | 6531 | /* The comma won't be used. */ |
a76d924d DJ |
6532 | payload_size += 1; |
6533 | header_length = strlen (header); | |
6534 | payload_size -= header_length; | |
3de11b2e | 6535 | payload_size -= hexnumlen (memaddr); |
c906108c | 6536 | |
a76d924d | 6537 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6538 | |
a76d924d DJ |
6539 | strcat (rs->buf, header); |
6540 | p = rs->buf + strlen (header); | |
6541 | ||
6542 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6543 | if (packet_format == 'X') | |
c906108c | 6544 | { |
23860348 | 6545 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6546 | todo = min (len, payload_size); |
a76d924d DJ |
6547 | if (use_length) |
6548 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6549 | todo = min (todo, payload_size); |
a76d924d DJ |
6550 | } |
6551 | else | |
6552 | { | |
23860348 | 6553 | /* Num bytes that will fit. */ |
a257b5bb | 6554 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6555 | if (use_length) |
6556 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6557 | todo = min (todo, payload_size / 2); |
917317f4 | 6558 | } |
a76d924d | 6559 | |
3de11b2e NS |
6560 | if (todo <= 0) |
6561 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6562 | _("minimum packet size too small to write data")); |
802188a7 | 6563 | |
6765f3e5 DJ |
6564 | /* If we already need another packet, then try to align the end |
6565 | of this packet to a useful boundary. */ | |
6566 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6567 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6568 | ||
a257b5bb | 6569 | /* Append "<memaddr>". */ |
917317f4 JM |
6570 | memaddr = remote_address_masked (memaddr); |
6571 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6572 | |
a76d924d DJ |
6573 | if (use_length) |
6574 | { | |
6575 | /* Append ",". */ | |
6576 | *p++ = ','; | |
802188a7 | 6577 | |
a76d924d DJ |
6578 | /* Append <len>. Retain the location/size of <len>. It may need to |
6579 | be adjusted once the packet body has been created. */ | |
6580 | plen = p; | |
6581 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6582 | p += plenlen; | |
6583 | } | |
a257b5bb AC |
6584 | |
6585 | /* Append ":". */ | |
917317f4 JM |
6586 | *p++ = ':'; |
6587 | *p = '\0'; | |
802188a7 | 6588 | |
a257b5bb | 6589 | /* Append the packet body. */ |
a76d924d | 6590 | if (packet_format == 'X') |
917317f4 | 6591 | { |
917317f4 JM |
6592 | /* Binary mode. Send target system values byte by byte, in |
6593 | increasing byte addresses. Only escape certain critical | |
6594 | characters. */ | |
6765f3e5 DJ |
6595 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6596 | payload_size); | |
6597 | ||
6598 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6599 | a second try to keep the end of the packet aligned. Don't do |
6600 | this if the packet is tiny. */ | |
6601 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6602 | { |
6603 | int new_nr_bytes; | |
6604 | ||
6605 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6606 | - memaddr); | |
6607 | if (new_nr_bytes != nr_bytes) | |
6608 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6609 | p, &nr_bytes, | |
6610 | payload_size); | |
6611 | } | |
6612 | ||
6613 | p += payload_length; | |
a76d924d | 6614 | if (use_length && nr_bytes < todo) |
c906108c | 6615 | { |
802188a7 | 6616 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6617 | and we have actually sent fewer bytes than planned. |
6618 | Fix-up the length field of the packet. Use the same | |
6619 | number of characters as before. */ | |
917317f4 JM |
6620 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6621 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6622 | } |
a76d924d DJ |
6623 | } |
6624 | else | |
6625 | { | |
917317f4 JM |
6626 | /* Normal mode: Send target system values byte by byte, in |
6627 | increasing byte addresses. Each byte is encoded as a two hex | |
6628 | value. */ | |
2644f393 | 6629 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6630 | p += 2 * nr_bytes; |
c906108c | 6631 | } |
802188a7 | 6632 | |
2e9f7625 | 6633 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6634 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6635 | |
2e9f7625 | 6636 | if (rs->buf[0] == 'E') |
917317f4 JM |
6637 | { |
6638 | /* There is no correspondance between what the remote protocol | |
6639 | uses for errors and errno codes. We would like a cleaner way | |
6640 | of representing errors (big enough to include errno codes, | |
6641 | bfd_error codes, and others). But for now just return EIO. */ | |
6642 | errno = EIO; | |
6643 | return 0; | |
6644 | } | |
802188a7 | 6645 | |
23860348 MS |
6646 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6647 | fewer bytes than we'd planned. */ | |
917317f4 | 6648 | return nr_bytes; |
c906108c SS |
6649 | } |
6650 | ||
a76d924d DJ |
6651 | /* Write memory data directly to the remote machine. |
6652 | This does not inform the data cache; the data cache uses this. | |
6653 | MEMADDR is the address in the remote memory space. | |
6654 | MYADDR is the address of the buffer in our space. | |
6655 | LEN is the number of bytes. | |
6656 | ||
6657 | Returns number of bytes transferred, or 0 (setting errno) for | |
6658 | error. Only transfer a single packet. */ | |
6659 | ||
f7605bc2 | 6660 | static int |
45aa4659 | 6661 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
a76d924d DJ |
6662 | { |
6663 | char *packet_format = 0; | |
6664 | ||
6665 | /* Check whether the target supports binary download. */ | |
6666 | check_binary_download (memaddr); | |
6667 | ||
6668 | switch (remote_protocol_packets[PACKET_X].support) | |
6669 | { | |
6670 | case PACKET_ENABLE: | |
6671 | packet_format = "X"; | |
6672 | break; | |
6673 | case PACKET_DISABLE: | |
6674 | packet_format = "M"; | |
6675 | break; | |
6676 | case PACKET_SUPPORT_UNKNOWN: | |
6677 | internal_error (__FILE__, __LINE__, | |
6678 | _("remote_write_bytes: bad internal state")); | |
6679 | default: | |
6680 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6681 | } | |
6682 | ||
6683 | return remote_write_bytes_aux (packet_format, | |
6684 | memaddr, myaddr, len, packet_format[0], 1); | |
6685 | } | |
6686 | ||
c906108c SS |
6687 | /* Read memory data directly from the remote machine. |
6688 | This does not use the data cache; the data cache uses this. | |
6689 | MEMADDR is the address in the remote memory space. | |
6690 | MYADDR is the address of the buffer in our space. | |
6691 | LEN is the number of bytes. | |
6692 | ||
6693 | Returns number of bytes transferred, or 0 for error. */ | |
6694 | ||
f7605bc2 | 6695 | static int |
cfd77fa1 | 6696 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6697 | { |
6d820c5c | 6698 | struct remote_state *rs = get_remote_state (); |
23860348 | 6699 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6700 | char *p; |
6701 | int todo; | |
6702 | int i; | |
c906108c | 6703 | |
b2182ed2 DJ |
6704 | if (len <= 0) |
6705 | return 0; | |
6706 | ||
11cf8741 | 6707 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6708 | /* The packet buffer will be large enough for the payload; |
6709 | get_memory_packet_size ensures this. */ | |
c906108c | 6710 | |
f7605bc2 PA |
6711 | /* Number if bytes that will fit. */ |
6712 | todo = min (len, max_buf_size / 2); | |
c906108c | 6713 | |
f7605bc2 PA |
6714 | /* Construct "m"<memaddr>","<len>". */ |
6715 | memaddr = remote_address_masked (memaddr); | |
6716 | p = rs->buf; | |
6717 | *p++ = 'm'; | |
6718 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6719 | *p++ = ','; | |
6720 | p += hexnumstr (p, (ULONGEST) todo); | |
6721 | *p = '\0'; | |
6722 | putpkt (rs->buf); | |
6723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6724 | if (rs->buf[0] == 'E' | |
6725 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6726 | && rs->buf[3] == '\0') | |
6727 | { | |
6728 | /* There is no correspondance between what the remote protocol | |
6729 | uses for errors and errno codes. We would like a cleaner way | |
6730 | of representing errors (big enough to include errno codes, | |
6731 | bfd_error codes, and others). But for now just return | |
6732 | EIO. */ | |
6733 | errno = EIO; | |
6734 | return 0; | |
c906108c | 6735 | } |
f7605bc2 PA |
6736 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6737 | characters. */ | |
6738 | p = rs->buf; | |
6739 | i = hex2bin (p, myaddr, todo); | |
6740 | /* Return what we have. Let higher layers handle partial reads. */ | |
6741 | return i; | |
c906108c | 6742 | } |
74531fed PA |
6743 | \f |
6744 | ||
6745 | /* Remote notification handler. */ | |
6746 | ||
6747 | static void | |
8128fd8e | 6748 | handle_notification (char *buf) |
74531fed PA |
6749 | { |
6750 | if (strncmp (buf, "Stop:", 5) == 0) | |
6751 | { | |
6752 | if (pending_stop_reply) | |
0723dbf5 PA |
6753 | { |
6754 | /* We've already parsed the in-flight stop-reply, but the | |
6755 | stub for some reason thought we didn't, possibly due to | |
6756 | timeout on its side. Just ignore it. */ | |
6757 | if (remote_debug) | |
6758 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6759 | } | |
74531fed PA |
6760 | else |
6761 | { | |
6762 | struct cleanup *old_chain; | |
6763 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6764 | |
74531fed PA |
6765 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6766 | ||
6767 | remote_parse_stop_reply (buf + 5, reply); | |
6768 | ||
6769 | discard_cleanups (old_chain); | |
6770 | ||
6771 | /* Be careful to only set it after parsing, since an error | |
6772 | may be thrown then. */ | |
6773 | pending_stop_reply = reply; | |
6774 | ||
6775 | /* Notify the event loop there's a stop reply to acknowledge | |
6776 | and that there may be more events to fetch. */ | |
6777 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6778 | |
6779 | if (remote_debug) | |
6780 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6781 | } |
6782 | } | |
6783 | else | |
6784 | /* We ignore notifications we don't recognize, for compatibility | |
6785 | with newer stubs. */ | |
6786 | ; | |
6787 | } | |
6788 | ||
c906108c SS |
6789 | \f |
6790 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6791 | transferring to or from debugger address BUFFER. Write to inferior |
6792 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6793 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6794 | |
c906108c | 6795 | static int |
961cb7b5 | 6796 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6797 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6798 | struct target_ops *target) |
c906108c | 6799 | { |
4930751a C |
6800 | int res; |
6801 | ||
e6e4e701 | 6802 | set_remote_traceframe (); |
82f73884 PA |
6803 | set_general_thread (inferior_ptid); |
6804 | ||
4930751a | 6805 | if (should_write) |
b2182ed2 | 6806 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6807 | else |
b2182ed2 | 6808 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6809 | |
6810 | return res; | |
c906108c SS |
6811 | } |
6812 | ||
a76d924d DJ |
6813 | /* Sends a packet with content determined by the printf format string |
6814 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6815 | whether the packet was a success, a failure, or unknown. */ | |
6816 | ||
2c0b251b | 6817 | static enum packet_result |
a76d924d DJ |
6818 | remote_send_printf (const char *format, ...) |
6819 | { | |
6820 | struct remote_state *rs = get_remote_state (); | |
6821 | int max_size = get_remote_packet_size (); | |
a76d924d | 6822 | va_list ap; |
a744cf53 | 6823 | |
a76d924d DJ |
6824 | va_start (ap, format); |
6825 | ||
6826 | rs->buf[0] = '\0'; | |
6827 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6828 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6829 | |
6830 | if (putpkt (rs->buf) < 0) | |
6831 | error (_("Communication problem with target.")); | |
6832 | ||
6833 | rs->buf[0] = '\0'; | |
6834 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6835 | ||
6836 | return packet_check_result (rs->buf); | |
6837 | } | |
6838 | ||
6839 | static void | |
6840 | restore_remote_timeout (void *p) | |
6841 | { | |
6842 | int value = *(int *)p; | |
a744cf53 | 6843 | |
a76d924d DJ |
6844 | remote_timeout = value; |
6845 | } | |
6846 | ||
6847 | /* Flash writing can take quite some time. We'll set | |
6848 | effectively infinite timeout for flash operations. | |
6849 | In future, we'll need to decide on a better approach. */ | |
6850 | static const int remote_flash_timeout = 1000; | |
6851 | ||
6852 | static void | |
6853 | remote_flash_erase (struct target_ops *ops, | |
6854 | ULONGEST address, LONGEST length) | |
6855 | { | |
5af949e3 | 6856 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6857 | int saved_remote_timeout = remote_timeout; |
6858 | enum packet_result ret; | |
a76d924d DJ |
6859 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6860 | &saved_remote_timeout); | |
a744cf53 | 6861 | |
a76d924d DJ |
6862 | remote_timeout = remote_flash_timeout; |
6863 | ||
6864 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6865 | phex (address, addr_size), |
a76d924d DJ |
6866 | phex (length, 4)); |
6867 | switch (ret) | |
6868 | { | |
6869 | case PACKET_UNKNOWN: | |
6870 | error (_("Remote target does not support flash erase")); | |
6871 | case PACKET_ERROR: | |
6872 | error (_("Error erasing flash with vFlashErase packet")); | |
6873 | default: | |
6874 | break; | |
6875 | } | |
6876 | ||
6877 | do_cleanups (back_to); | |
6878 | } | |
6879 | ||
6880 | static LONGEST | |
6881 | remote_flash_write (struct target_ops *ops, | |
6882 | ULONGEST address, LONGEST length, | |
6883 | const gdb_byte *data) | |
6884 | { | |
6885 | int saved_remote_timeout = remote_timeout; | |
6886 | int ret; | |
6887 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6888 | &saved_remote_timeout); | |
6889 | ||
6890 | remote_timeout = remote_flash_timeout; | |
6891 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6892 | do_cleanups (back_to); | |
6893 | ||
6894 | return ret; | |
6895 | } | |
6896 | ||
6897 | static void | |
6898 | remote_flash_done (struct target_ops *ops) | |
6899 | { | |
6900 | int saved_remote_timeout = remote_timeout; | |
6901 | int ret; | |
6902 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6903 | &saved_remote_timeout); | |
6904 | ||
6905 | remote_timeout = remote_flash_timeout; | |
6906 | ret = remote_send_printf ("vFlashDone"); | |
6907 | do_cleanups (back_to); | |
6908 | ||
6909 | switch (ret) | |
6910 | { | |
6911 | case PACKET_UNKNOWN: | |
6912 | error (_("Remote target does not support vFlashDone")); | |
6913 | case PACKET_ERROR: | |
6914 | error (_("Error finishing flash operation")); | |
6915 | default: | |
6916 | break; | |
6917 | } | |
6918 | } | |
6919 | ||
c906108c | 6920 | static void |
fba45db2 | 6921 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6922 | { |
6923 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6924 | } | |
6925 | \f | |
6926 | /* Stuff for dealing with the packets which are part of this protocol. | |
6927 | See comment at top of file for details. */ | |
6928 | ||
0876f84a | 6929 | /* Read a single character from the remote end. */ |
c906108c SS |
6930 | |
6931 | static int | |
fba45db2 | 6932 | readchar (int timeout) |
c906108c SS |
6933 | { |
6934 | int ch; | |
6935 | ||
2cd58942 | 6936 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6937 | |
2acceee2 | 6938 | if (ch >= 0) |
0876f84a | 6939 | return ch; |
2acceee2 JM |
6940 | |
6941 | switch ((enum serial_rc) ch) | |
c906108c SS |
6942 | { |
6943 | case SERIAL_EOF: | |
ce5ce7ed | 6944 | pop_target (); |
8a3fe4f8 | 6945 | error (_("Remote connection closed")); |
2acceee2 | 6946 | /* no return */ |
c906108c | 6947 | case SERIAL_ERROR: |
4ac8c4da | 6948 | pop_target (); |
3e43a32a MS |
6949 | perror_with_name (_("Remote communication error. " |
6950 | "Target disconnected.")); | |
2acceee2 | 6951 | /* no return */ |
c906108c | 6952 | case SERIAL_TIMEOUT: |
2acceee2 | 6953 | break; |
c906108c | 6954 | } |
2acceee2 | 6955 | return ch; |
c906108c SS |
6956 | } |
6957 | ||
6d820c5c DJ |
6958 | /* Send the command in *BUF to the remote machine, and read the reply |
6959 | into *BUF. Report an error if we get an error reply. Resize | |
6960 | *BUF using xrealloc if necessary to hold the result, and update | |
6961 | *SIZEOF_BUF. */ | |
c906108c SS |
6962 | |
6963 | static void | |
6d820c5c DJ |
6964 | remote_send (char **buf, |
6965 | long *sizeof_buf) | |
c906108c | 6966 | { |
6d820c5c | 6967 | putpkt (*buf); |
c2d11a7d | 6968 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6969 | |
6d820c5c DJ |
6970 | if ((*buf)[0] == 'E') |
6971 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6972 | } |
6973 | ||
6e5abd65 PA |
6974 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6975 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6976 | etc. The caller is responsible for releasing the returned | |
6977 | memory. */ | |
6978 | ||
6979 | static char * | |
6980 | escape_buffer (const char *buf, int n) | |
6981 | { | |
6982 | struct cleanup *old_chain; | |
6983 | struct ui_file *stb; | |
6984 | char *str; | |
6e5abd65 PA |
6985 | |
6986 | stb = mem_fileopen (); | |
6987 | old_chain = make_cleanup_ui_file_delete (stb); | |
6988 | ||
6989 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6990 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6991 | do_cleanups (old_chain); |
6992 | return str; | |
6993 | } | |
6994 | ||
c906108c SS |
6995 | /* Display a null-terminated packet on stdout, for debugging, using C |
6996 | string notation. */ | |
6997 | ||
6998 | static void | |
fba45db2 | 6999 | print_packet (char *buf) |
c906108c SS |
7000 | { |
7001 | puts_filtered ("\""); | |
43e526b9 | 7002 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
7003 | puts_filtered ("\""); |
7004 | } | |
7005 | ||
7006 | int | |
fba45db2 | 7007 | putpkt (char *buf) |
c906108c SS |
7008 | { |
7009 | return putpkt_binary (buf, strlen (buf)); | |
7010 | } | |
7011 | ||
7012 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 7013 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 7014 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
7015 | and for a possible /0 if we are debugging (remote_debug) and want |
7016 | to print the sent packet as a string. */ | |
c906108c SS |
7017 | |
7018 | static int | |
fba45db2 | 7019 | putpkt_binary (char *buf, int cnt) |
c906108c | 7020 | { |
2d717e4f | 7021 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7022 | int i; |
7023 | unsigned char csum = 0; | |
11cf8741 | 7024 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 7025 | |
c906108c SS |
7026 | int ch; |
7027 | int tcount = 0; | |
7028 | char *p; | |
dd61ec5c | 7029 | char *message; |
c906108c | 7030 | |
e24a49d8 PA |
7031 | /* Catch cases like trying to read memory or listing threads while |
7032 | we're waiting for a stop reply. The remote server wouldn't be | |
7033 | ready to handle this request, so we'd hang and timeout. We don't | |
7034 | have to worry about this in synchronous mode, because in that | |
7035 | case it's not possible to issue a command while the target is | |
74531fed PA |
7036 | running. This is not a problem in non-stop mode, because in that |
7037 | case, the stub is always ready to process serial input. */ | |
7038 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
7039 | error (_("Cannot execute this command while the target is running.")); |
7040 | ||
2d717e4f DJ |
7041 | /* We're sending out a new packet. Make sure we don't look at a |
7042 | stale cached response. */ | |
7043 | rs->cached_wait_status = 0; | |
7044 | ||
c906108c SS |
7045 | /* Copy the packet into buffer BUF2, encapsulating it |
7046 | and giving it a checksum. */ | |
7047 | ||
c906108c SS |
7048 | p = buf2; |
7049 | *p++ = '$'; | |
7050 | ||
7051 | for (i = 0; i < cnt; i++) | |
7052 | { | |
7053 | csum += buf[i]; | |
7054 | *p++ = buf[i]; | |
7055 | } | |
7056 | *p++ = '#'; | |
7057 | *p++ = tohex ((csum >> 4) & 0xf); | |
7058 | *p++ = tohex (csum & 0xf); | |
7059 | ||
7060 | /* Send it over and over until we get a positive ack. */ | |
7061 | ||
7062 | while (1) | |
7063 | { | |
7064 | int started_error_output = 0; | |
7065 | ||
7066 | if (remote_debug) | |
7067 | { | |
6e5abd65 PA |
7068 | struct cleanup *old_chain; |
7069 | char *str; | |
7070 | ||
c906108c | 7071 | *p = '\0'; |
6e5abd65 PA |
7072 | str = escape_buffer (buf2, p - buf2); |
7073 | old_chain = make_cleanup (xfree, str); | |
7074 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 7075 | gdb_flush (gdb_stdlog); |
6e5abd65 | 7076 | do_cleanups (old_chain); |
c906108c | 7077 | } |
2cd58942 | 7078 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 7079 | perror_with_name (_("putpkt: write failed")); |
c906108c | 7080 | |
a6f3e723 SL |
7081 | /* If this is a no acks version of the remote protocol, send the |
7082 | packet and move on. */ | |
7083 | if (rs->noack_mode) | |
7084 | break; | |
7085 | ||
74531fed PA |
7086 | /* Read until either a timeout occurs (-2) or '+' is read. |
7087 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
7088 | while (1) |
7089 | { | |
7090 | ch = readchar (remote_timeout); | |
7091 | ||
c5aa993b | 7092 | if (remote_debug) |
c906108c SS |
7093 | { |
7094 | switch (ch) | |
7095 | { | |
7096 | case '+': | |
1216fa2c | 7097 | case '-': |
c906108c SS |
7098 | case SERIAL_TIMEOUT: |
7099 | case '$': | |
74531fed | 7100 | case '%': |
c906108c SS |
7101 | if (started_error_output) |
7102 | { | |
7103 | putchar_unfiltered ('\n'); | |
7104 | started_error_output = 0; | |
7105 | } | |
7106 | } | |
7107 | } | |
7108 | ||
7109 | switch (ch) | |
7110 | { | |
7111 | case '+': | |
7112 | if (remote_debug) | |
0f71a2f6 | 7113 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 7114 | return 1; |
1216fa2c AC |
7115 | case '-': |
7116 | if (remote_debug) | |
7117 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 7118 | /* FALLTHROUGH */ |
c906108c | 7119 | case SERIAL_TIMEOUT: |
c5aa993b | 7120 | tcount++; |
c906108c SS |
7121 | if (tcount > 3) |
7122 | return 0; | |
23860348 | 7123 | break; /* Retransmit buffer. */ |
c906108c SS |
7124 | case '$': |
7125 | { | |
40e3f985 | 7126 | if (remote_debug) |
2bc416ba | 7127 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 7128 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
7129 | /* It's probably an old response sent because an ACK |
7130 | was lost. Gobble up the packet and ack it so it | |
7131 | doesn't get retransmitted when we resend this | |
7132 | packet. */ | |
6d820c5c | 7133 | skip_frame (); |
d6f7abdf | 7134 | serial_write (remote_desc, "+", 1); |
23860348 | 7135 | continue; /* Now, go look for +. */ |
c906108c | 7136 | } |
74531fed PA |
7137 | |
7138 | case '%': | |
7139 | { | |
7140 | int val; | |
7141 | ||
7142 | /* If we got a notification, handle it, and go back to looking | |
7143 | for an ack. */ | |
7144 | /* We've found the start of a notification. Now | |
7145 | collect the data. */ | |
7146 | val = read_frame (&rs->buf, &rs->buf_size); | |
7147 | if (val >= 0) | |
7148 | { | |
7149 | if (remote_debug) | |
7150 | { | |
6e5abd65 PA |
7151 | struct cleanup *old_chain; |
7152 | char *str; | |
7153 | ||
7154 | str = escape_buffer (rs->buf, val); | |
7155 | old_chain = make_cleanup (xfree, str); | |
7156 | fprintf_unfiltered (gdb_stdlog, | |
7157 | " Notification received: %s\n", | |
7158 | str); | |
7159 | do_cleanups (old_chain); | |
74531fed | 7160 | } |
8128fd8e | 7161 | handle_notification (rs->buf); |
74531fed PA |
7162 | /* We're in sync now, rewait for the ack. */ |
7163 | tcount = 0; | |
7164 | } | |
7165 | else | |
7166 | { | |
7167 | if (remote_debug) | |
7168 | { | |
7169 | if (!started_error_output) | |
7170 | { | |
7171 | started_error_output = 1; | |
7172 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7173 | } | |
7174 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7175 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7176 | } | |
7177 | } | |
7178 | continue; | |
7179 | } | |
7180 | /* fall-through */ | |
c906108c SS |
7181 | default: |
7182 | if (remote_debug) | |
7183 | { | |
7184 | if (!started_error_output) | |
7185 | { | |
7186 | started_error_output = 1; | |
0f71a2f6 | 7187 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7188 | } |
0f71a2f6 | 7189 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7190 | } |
7191 | continue; | |
7192 | } | |
23860348 | 7193 | break; /* Here to retransmit. */ |
c906108c SS |
7194 | } |
7195 | ||
7196 | #if 0 | |
7197 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7198 | able to get out next time we call QUIT, without anything as |
7199 | violent as interrupt_query. If we want to provide a way out of | |
7200 | here without getting to the next QUIT, it should be based on | |
7201 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7202 | if (quit_flag) |
7203 | { | |
7204 | quit_flag = 0; | |
7205 | interrupt_query (); | |
7206 | } | |
7207 | #endif | |
7208 | } | |
a6f3e723 | 7209 | return 0; |
c906108c SS |
7210 | } |
7211 | ||
6d820c5c DJ |
7212 | /* Come here after finding the start of a frame when we expected an |
7213 | ack. Do our best to discard the rest of this packet. */ | |
7214 | ||
7215 | static void | |
7216 | skip_frame (void) | |
7217 | { | |
7218 | int c; | |
7219 | ||
7220 | while (1) | |
7221 | { | |
7222 | c = readchar (remote_timeout); | |
7223 | switch (c) | |
7224 | { | |
7225 | case SERIAL_TIMEOUT: | |
7226 | /* Nothing we can do. */ | |
7227 | return; | |
7228 | case '#': | |
7229 | /* Discard the two bytes of checksum and stop. */ | |
7230 | c = readchar (remote_timeout); | |
7231 | if (c >= 0) | |
7232 | c = readchar (remote_timeout); | |
7233 | ||
7234 | return; | |
7235 | case '*': /* Run length encoding. */ | |
7236 | /* Discard the repeat count. */ | |
7237 | c = readchar (remote_timeout); | |
7238 | if (c < 0) | |
7239 | return; | |
7240 | break; | |
7241 | default: | |
7242 | /* A regular character. */ | |
7243 | break; | |
7244 | } | |
7245 | } | |
7246 | } | |
7247 | ||
c906108c | 7248 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7249 | into *BUF, verifying the checksum, length, and handling run-length |
7250 | compression. NUL terminate the buffer. If there is not enough room, | |
7251 | expand *BUF using xrealloc. | |
c906108c | 7252 | |
c2d11a7d JM |
7253 | Returns -1 on error, number of characters in buffer (ignoring the |
7254 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7255 | SERIAL status indications). */ |
c2d11a7d JM |
7256 | |
7257 | static long | |
6d820c5c DJ |
7258 | read_frame (char **buf_p, |
7259 | long *sizeof_buf) | |
c906108c SS |
7260 | { |
7261 | unsigned char csum; | |
c2d11a7d | 7262 | long bc; |
c906108c | 7263 | int c; |
6d820c5c | 7264 | char *buf = *buf_p; |
a6f3e723 | 7265 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7266 | |
7267 | csum = 0; | |
c2d11a7d | 7268 | bc = 0; |
c906108c SS |
7269 | |
7270 | while (1) | |
7271 | { | |
7272 | c = readchar (remote_timeout); | |
c906108c SS |
7273 | switch (c) |
7274 | { | |
7275 | case SERIAL_TIMEOUT: | |
7276 | if (remote_debug) | |
0f71a2f6 | 7277 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7278 | return -1; |
c906108c SS |
7279 | case '$': |
7280 | if (remote_debug) | |
0f71a2f6 JM |
7281 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7282 | gdb_stdlog); | |
23860348 | 7283 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7284 | case '#': |
7285 | { | |
7286 | unsigned char pktcsum; | |
e1b09194 AC |
7287 | int check_0 = 0; |
7288 | int check_1 = 0; | |
c906108c | 7289 | |
c2d11a7d | 7290 | buf[bc] = '\0'; |
c906108c | 7291 | |
e1b09194 AC |
7292 | check_0 = readchar (remote_timeout); |
7293 | if (check_0 >= 0) | |
7294 | check_1 = readchar (remote_timeout); | |
802188a7 | 7295 | |
e1b09194 AC |
7296 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7297 | { | |
7298 | if (remote_debug) | |
2bc416ba | 7299 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7300 | gdb_stdlog); |
e1b09194 AC |
7301 | return -1; |
7302 | } | |
7303 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7304 | { |
7305 | if (remote_debug) | |
2bc416ba | 7306 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7307 | gdb_stdlog); |
40e3f985 FN |
7308 | return -1; |
7309 | } | |
c906108c | 7310 | |
a6f3e723 SL |
7311 | /* Don't recompute the checksum; with no ack packets we |
7312 | don't have any way to indicate a packet retransmission | |
7313 | is necessary. */ | |
7314 | if (rs->noack_mode) | |
7315 | return bc; | |
7316 | ||
e1b09194 | 7317 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7318 | if (csum == pktcsum) |
c2d11a7d | 7319 | return bc; |
c906108c | 7320 | |
c5aa993b | 7321 | if (remote_debug) |
c906108c | 7322 | { |
6e5abd65 PA |
7323 | struct cleanup *old_chain; |
7324 | char *str; | |
7325 | ||
7326 | str = escape_buffer (buf, bc); | |
7327 | old_chain = make_cleanup (xfree, str); | |
7328 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7329 | "Bad checksum, sentsum=0x%x, " |
7330 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7331 | pktcsum, csum, str); |
7332 | do_cleanups (old_chain); | |
c906108c | 7333 | } |
c2d11a7d | 7334 | /* Number of characters in buffer ignoring trailing |
23860348 | 7335 | NULL. */ |
c2d11a7d | 7336 | return -1; |
c906108c | 7337 | } |
23860348 | 7338 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7339 | { |
7340 | int repeat; | |
c906108c | 7341 | |
a744cf53 | 7342 | csum += c; |
b4501125 AC |
7343 | c = readchar (remote_timeout); |
7344 | csum += c; | |
23860348 | 7345 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7346 | |
23860348 | 7347 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7348 | |
6d820c5c | 7349 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7350 | { |
6d820c5c DJ |
7351 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7352 | { | |
7353 | /* Make some more room in the buffer. */ | |
7354 | *sizeof_buf += repeat; | |
7355 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7356 | buf = *buf_p; | |
7357 | } | |
7358 | ||
c2d11a7d JM |
7359 | memset (&buf[bc], buf[bc - 1], repeat); |
7360 | bc += repeat; | |
c2c6d25f JM |
7361 | continue; |
7362 | } | |
7363 | ||
c2d11a7d | 7364 | buf[bc] = '\0'; |
6d820c5c | 7365 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7366 | return -1; |
c2c6d25f | 7367 | } |
c906108c | 7368 | default: |
6d820c5c | 7369 | if (bc >= *sizeof_buf - 1) |
c906108c | 7370 | { |
6d820c5c DJ |
7371 | /* Make some more room in the buffer. */ |
7372 | *sizeof_buf *= 2; | |
7373 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7374 | buf = *buf_p; | |
c906108c SS |
7375 | } |
7376 | ||
6d820c5c DJ |
7377 | buf[bc++] = c; |
7378 | csum += c; | |
7379 | continue; | |
c906108c SS |
7380 | } |
7381 | } | |
7382 | } | |
7383 | ||
7384 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7385 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7386 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7387 | rather than timing out; this is used (in synchronous mode) to wait | |
7388 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7389 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7390 | don't have to change all the calls to getpkt to deal with the | |
7391 | return value, because at the moment I don't know what the right | |
23860348 | 7392 | thing to do it for those. */ |
c906108c | 7393 | void |
6d820c5c DJ |
7394 | getpkt (char **buf, |
7395 | long *sizeof_buf, | |
c2d11a7d | 7396 | int forever) |
d9fcf2fb JM |
7397 | { |
7398 | int timed_out; | |
7399 | ||
7400 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7401 | } | |
7402 | ||
7403 | ||
7404 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7405 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7406 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7407 | rather than timing out; this is used (in synchronous mode) to wait | |
7408 | for a target that is is executing user code to stop. If FOREVER == | |
7409 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7410 | indication of this to the caller. Otherwise return the number of |
7411 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7412 | enough reason to return to the caller. */ | |
7413 | ||
3172dc30 | 7414 | static int |
74531fed PA |
7415 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7416 | int expecting_notif) | |
c906108c | 7417 | { |
2d717e4f | 7418 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7419 | int c; |
7420 | int tries; | |
7421 | int timeout; | |
df4b58fe | 7422 | int val = -1; |
c906108c | 7423 | |
2d717e4f DJ |
7424 | /* We're reading a new response. Make sure we don't look at a |
7425 | previously cached response. */ | |
7426 | rs->cached_wait_status = 0; | |
7427 | ||
6d820c5c | 7428 | strcpy (*buf, "timeout"); |
c906108c SS |
7429 | |
7430 | if (forever) | |
74531fed PA |
7431 | timeout = watchdog > 0 ? watchdog : -1; |
7432 | else if (expecting_notif) | |
7433 | timeout = 0; /* There should already be a char in the buffer. If | |
7434 | not, bail out. */ | |
c906108c SS |
7435 | else |
7436 | timeout = remote_timeout; | |
7437 | ||
7438 | #define MAX_TRIES 3 | |
7439 | ||
74531fed PA |
7440 | /* Process any number of notifications, and then return when |
7441 | we get a packet. */ | |
7442 | for (;;) | |
c906108c | 7443 | { |
74531fed PA |
7444 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7445 | times. */ | |
7446 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7447 | { |
74531fed PA |
7448 | /* This can loop forever if the remote side sends us |
7449 | characters continuously, but if it pauses, we'll get | |
7450 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7451 | we'll count that as a retry. | |
7452 | ||
7453 | Note that even when forever is set, we will only wait | |
7454 | forever prior to the start of a packet. After that, we | |
7455 | expect characters to arrive at a brisk pace. They should | |
7456 | show up within remote_timeout intervals. */ | |
7457 | do | |
7458 | c = readchar (timeout); | |
7459 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7460 | |
7461 | if (c == SERIAL_TIMEOUT) | |
7462 | { | |
74531fed PA |
7463 | if (expecting_notif) |
7464 | return -1; /* Don't complain, it's normal to not get | |
7465 | anything in this case. */ | |
7466 | ||
23860348 | 7467 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7468 | { |
2acceee2 | 7469 | QUIT; |
ce5ce7ed | 7470 | pop_target (); |
489eaeba | 7471 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7472 | } |
c906108c | 7473 | if (remote_debug) |
0f71a2f6 | 7474 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7475 | } |
74531fed PA |
7476 | else |
7477 | { | |
7478 | /* We've found the start of a packet or notification. | |
7479 | Now collect the data. */ | |
7480 | val = read_frame (buf, sizeof_buf); | |
7481 | if (val >= 0) | |
7482 | break; | |
7483 | } | |
7484 | ||
7485 | serial_write (remote_desc, "-", 1); | |
c906108c | 7486 | } |
c906108c | 7487 | |
74531fed PA |
7488 | if (tries > MAX_TRIES) |
7489 | { | |
7490 | /* We have tried hard enough, and just can't receive the | |
7491 | packet/notification. Give up. */ | |
7492 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7493 | |
74531fed PA |
7494 | /* Skip the ack char if we're in no-ack mode. */ |
7495 | if (!rs->noack_mode) | |
7496 | serial_write (remote_desc, "+", 1); | |
7497 | return -1; | |
7498 | } | |
c906108c | 7499 | |
74531fed PA |
7500 | /* If we got an ordinary packet, return that to our caller. */ |
7501 | if (c == '$') | |
c906108c SS |
7502 | { |
7503 | if (remote_debug) | |
43e526b9 | 7504 | { |
6e5abd65 PA |
7505 | struct cleanup *old_chain; |
7506 | char *str; | |
7507 | ||
7508 | str = escape_buffer (*buf, val); | |
7509 | old_chain = make_cleanup (xfree, str); | |
7510 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7511 | do_cleanups (old_chain); | |
43e526b9 | 7512 | } |
a6f3e723 SL |
7513 | |
7514 | /* Skip the ack char if we're in no-ack mode. */ | |
7515 | if (!rs->noack_mode) | |
7516 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7517 | return val; |
c906108c SS |
7518 | } |
7519 | ||
74531fed PA |
7520 | /* If we got a notification, handle it, and go back to looking |
7521 | for a packet. */ | |
7522 | else | |
7523 | { | |
7524 | gdb_assert (c == '%'); | |
7525 | ||
7526 | if (remote_debug) | |
7527 | { | |
6e5abd65 PA |
7528 | struct cleanup *old_chain; |
7529 | char *str; | |
7530 | ||
7531 | str = escape_buffer (*buf, val); | |
7532 | old_chain = make_cleanup (xfree, str); | |
7533 | fprintf_unfiltered (gdb_stdlog, | |
7534 | " Notification received: %s\n", | |
7535 | str); | |
7536 | do_cleanups (old_chain); | |
74531fed | 7537 | } |
c906108c | 7538 | |
8128fd8e | 7539 | handle_notification (*buf); |
c906108c | 7540 | |
74531fed | 7541 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7542 | |
74531fed PA |
7543 | if (expecting_notif) |
7544 | return -1; | |
7545 | } | |
7546 | } | |
7547 | } | |
7548 | ||
7549 | static int | |
7550 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7551 | { | |
7552 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7553 | } | |
7554 | ||
7555 | static int | |
7556 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7557 | { | |
7558 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7559 | } |
74531fed | 7560 | |
c906108c | 7561 | \f |
732f3f12 TT |
7562 | /* A helper function that just calls putpkt; for type correctness. */ |
7563 | ||
7564 | static int | |
7565 | putpkt_for_catch_errors (void *arg) | |
7566 | { | |
7567 | return putpkt (arg); | |
7568 | } | |
7569 | ||
c906108c | 7570 | static void |
7d85a9c0 | 7571 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7572 | { |
23860348 MS |
7573 | /* Use catch_errors so the user can quit from gdb even when we |
7574 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7575 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7576 | |
7577 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7578 | we do or not. For the existing stubs, kill is a noop. */ | |
7579 | target_mourn_inferior (); | |
7580 | } | |
7581 | ||
82f73884 PA |
7582 | static int |
7583 | remote_vkill (int pid, struct remote_state *rs) | |
7584 | { | |
7585 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7586 | return -1; | |
7587 | ||
7588 | /* Tell the remote target to detach. */ | |
bba74b36 | 7589 | xsnprintf (rs->buf, get_remote_packet_size (), "vKill;%x", pid); |
82f73884 PA |
7590 | putpkt (rs->buf); |
7591 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7592 | ||
7593 | if (packet_ok (rs->buf, | |
7594 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7595 | return 0; | |
7596 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7597 | return -1; | |
7598 | else | |
7599 | return 1; | |
7600 | } | |
7601 | ||
7602 | static void | |
7d85a9c0 | 7603 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7604 | { |
7605 | int res; | |
7606 | int pid = ptid_get_pid (inferior_ptid); | |
7607 | struct remote_state *rs = get_remote_state (); | |
7608 | ||
7609 | res = remote_vkill (pid, rs); | |
901f9912 | 7610 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7611 | { |
7612 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7613 | to specify the pid. */ | |
7614 | ||
7615 | putpkt ("k"); | |
7616 | #if 0 | |
7617 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7618 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7619 | res = 1; | |
7620 | #else | |
7621 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7622 | we do or not. For the existing stubs, kill is a noop. */ | |
7623 | res = 0; | |
7624 | #endif | |
7625 | } | |
7626 | ||
7627 | if (res != 0) | |
7628 | error (_("Can't kill process")); | |
7629 | ||
82f73884 PA |
7630 | target_mourn_inferior (); |
7631 | } | |
7632 | ||
c906108c | 7633 | static void |
136d6dae | 7634 | remote_mourn (struct target_ops *ops) |
c906108c | 7635 | { |
136d6dae | 7636 | remote_mourn_1 (ops); |
c906108c SS |
7637 | } |
7638 | ||
c906108c SS |
7639 | /* Worker function for remote_mourn. */ |
7640 | static void | |
fba45db2 | 7641 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7642 | { |
7643 | unpush_target (target); | |
ce5ce7ed | 7644 | |
8a2492ee PA |
7645 | /* remote_close takes care of doing most of the clean up. */ |
7646 | generic_mourn_inferior (); | |
c906108c SS |
7647 | } |
7648 | ||
2d717e4f DJ |
7649 | static void |
7650 | extended_remote_mourn_1 (struct target_ops *target) | |
7651 | { | |
7652 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7653 | |
e24a49d8 PA |
7654 | /* In case we got here due to an error, but we're going to stay |
7655 | connected. */ | |
7656 | rs->waiting_for_stop_reply = 0; | |
7657 | ||
74531fed PA |
7658 | /* We're no longer interested in these events. */ |
7659 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7660 | ||
dc1981d7 PA |
7661 | /* If the current general thread belonged to the process we just |
7662 | detached from or has exited, the remote side current general | |
7663 | thread becomes undefined. Considering a case like this: | |
7664 | ||
7665 | - We just got here due to a detach. | |
7666 | - The process that we're detaching from happens to immediately | |
7667 | report a global breakpoint being hit in non-stop mode, in the | |
7668 | same thread we had selected before. | |
7669 | - GDB attaches to this process again. | |
7670 | - This event happens to be the next event we handle. | |
7671 | ||
7672 | GDB would consider that the current general thread didn't need to | |
7673 | be set on the stub side (with Hg), since for all it knew, | |
7674 | GENERAL_THREAD hadn't changed. | |
7675 | ||
7676 | Notice that although in all-stop mode, the remote server always | |
7677 | sets the current thread to the thread reporting the stop event, | |
7678 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7679 | not* change the current thread when reporting a breakpoint hit, | |
7680 | due to the decoupling of event reporting and event handling. | |
7681 | ||
7682 | To keep things simple, we always invalidate our notion of the | |
7683 | current thread. */ | |
7684 | record_currthread (minus_one_ptid); | |
7685 | ||
2d717e4f DJ |
7686 | /* Unlike "target remote", we do not want to unpush the target; then |
7687 | the next time the user says "run", we won't be connected. */ | |
7688 | ||
48aa3c27 PA |
7689 | /* Call common code to mark the inferior as not running. */ |
7690 | generic_mourn_inferior (); | |
7691 | ||
d729566a | 7692 | if (!have_inferiors ()) |
2d717e4f | 7693 | { |
82f73884 PA |
7694 | if (!remote_multi_process_p (rs)) |
7695 | { | |
7696 | /* Check whether the target is running now - some remote stubs | |
7697 | automatically restart after kill. */ | |
7698 | putpkt ("?"); | |
7699 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7700 | ||
7701 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7702 | { | |
3e43a32a MS |
7703 | /* Assume that the target has been restarted. Set |
7704 | inferior_ptid so that bits of core GDB realizes | |
7705 | there's something here, e.g., so that the user can | |
7706 | say "kill" again. */ | |
82f73884 PA |
7707 | inferior_ptid = magic_null_ptid; |
7708 | } | |
82f73884 | 7709 | } |
2d717e4f DJ |
7710 | } |
7711 | } | |
c906108c SS |
7712 | |
7713 | static void | |
136d6dae | 7714 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7715 | { |
136d6dae | 7716 | extended_remote_mourn_1 (ops); |
2d717e4f | 7717 | } |
c906108c | 7718 | |
03583c20 UW |
7719 | static int |
7720 | extended_remote_supports_disable_randomization (void) | |
7721 | { | |
7722 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7723 | == PACKET_ENABLE); | |
7724 | } | |
7725 | ||
7726 | static void | |
7727 | extended_remote_disable_randomization (int val) | |
7728 | { | |
7729 | struct remote_state *rs = get_remote_state (); | |
7730 | char *reply; | |
7731 | ||
bba74b36 YQ |
7732 | xsnprintf (rs->buf, get_remote_packet_size (), "QDisableRandomization:%x", |
7733 | val); | |
03583c20 UW |
7734 | putpkt (rs->buf); |
7735 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7736 | if (*reply == '\0') | |
7737 | error (_("Target does not support QDisableRandomization.")); | |
7738 | if (strcmp (reply, "OK") != 0) | |
7739 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7740 | } | |
7741 | ||
2d717e4f DJ |
7742 | static int |
7743 | extended_remote_run (char *args) | |
7744 | { | |
7745 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7746 | int len; |
c906108c | 7747 | |
2d717e4f DJ |
7748 | /* If the user has disabled vRun support, or we have detected that |
7749 | support is not available, do not try it. */ | |
7750 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7751 | return -1; | |
424163ea | 7752 | |
2d717e4f DJ |
7753 | strcpy (rs->buf, "vRun;"); |
7754 | len = strlen (rs->buf); | |
c906108c | 7755 | |
2d717e4f DJ |
7756 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7757 | error (_("Remote file name too long for run packet")); | |
7758 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7759 | ||
d1a41061 | 7760 | gdb_assert (args != NULL); |
2d717e4f DJ |
7761 | if (*args) |
7762 | { | |
7763 | struct cleanup *back_to; | |
7764 | int i; | |
7765 | char **argv; | |
7766 | ||
d1a41061 | 7767 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7768 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7769 | for (i = 0; argv[i] != NULL; i++) | |
7770 | { | |
7771 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7772 | error (_("Argument list too long for run packet")); | |
7773 | rs->buf[len++] = ';'; | |
7774 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7775 | } | |
7776 | do_cleanups (back_to); | |
7777 | } | |
7778 | ||
7779 | rs->buf[len++] = '\0'; | |
7780 | ||
7781 | putpkt (rs->buf); | |
7782 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7783 | ||
7784 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7785 | { | |
7786 | /* We have a wait response; we don't need it, though. All is well. */ | |
7787 | return 0; | |
7788 | } | |
7789 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7790 | /* It wasn't disabled before, but it is now. */ | |
7791 | return -1; | |
7792 | else | |
7793 | { | |
7794 | if (remote_exec_file[0] == '\0') | |
7795 | error (_("Running the default executable on the remote target failed; " | |
7796 | "try \"set remote exec-file\"?")); | |
7797 | else | |
7798 | error (_("Running \"%s\" on the remote target failed"), | |
7799 | remote_exec_file); | |
7800 | } | |
c906108c SS |
7801 | } |
7802 | ||
2d717e4f DJ |
7803 | /* In the extended protocol we want to be able to do things like |
7804 | "run" and have them basically work as expected. So we need | |
7805 | a special create_inferior function. We support changing the | |
7806 | executable file and the command line arguments, but not the | |
7807 | environment. */ | |
7808 | ||
43ff13b4 | 7809 | static void |
2d717e4f | 7810 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7811 | char **env, int from_tty) |
43ff13b4 | 7812 | { |
43ff13b4 | 7813 | /* If running asynchronously, register the target file descriptor |
23860348 | 7814 | with the event loop. */ |
75c99385 | 7815 | if (target_can_async_p ()) |
2acceee2 | 7816 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7817 | |
03583c20 UW |
7818 | /* Disable address space randomization if requested (and supported). */ |
7819 | if (extended_remote_supports_disable_randomization ()) | |
7820 | extended_remote_disable_randomization (disable_randomization); | |
7821 | ||
43ff13b4 | 7822 | /* Now restart the remote server. */ |
2d717e4f DJ |
7823 | if (extended_remote_run (args) == -1) |
7824 | { | |
7825 | /* vRun was not supported. Fail if we need it to do what the | |
7826 | user requested. */ | |
7827 | if (remote_exec_file[0]) | |
7828 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7829 | if (args[0]) | |
7830 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7831 | |
2d717e4f DJ |
7832 | /* Fall back to "R". */ |
7833 | extended_remote_restart (); | |
7834 | } | |
424163ea | 7835 | |
6c95b8df PA |
7836 | if (!have_inferiors ()) |
7837 | { | |
7838 | /* Clean up from the last time we ran, before we mark the target | |
7839 | running again. This will mark breakpoints uninserted, and | |
7840 | get_offsets may insert breakpoints. */ | |
7841 | init_thread_list (); | |
7842 | init_wait_for_inferior (); | |
7843 | } | |
45280a52 | 7844 | |
49c62f2e | 7845 | add_current_inferior_and_thread (); |
c0a2216e | 7846 | |
2d717e4f DJ |
7847 | /* Get updated offsets, if the stub uses qOffsets. */ |
7848 | get_offsets (); | |
2d717e4f DJ |
7849 | } |
7850 | ||
7851 | static void | |
136d6dae VP |
7852 | extended_remote_create_inferior (struct target_ops *ops, |
7853 | char *exec_file, char *args, | |
2d717e4f DJ |
7854 | char **env, int from_tty) |
7855 | { | |
75c99385 | 7856 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7857 | } |
c906108c | 7858 | \f |
c5aa993b | 7859 | |
b775012e LM |
7860 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7861 | the list of conditions (in agent expression bytecode format), if any, the | |
7862 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 7863 | started from BUF and ended at BUF_END. */ |
b775012e LM |
7864 | |
7865 | static int | |
7866 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
7867 | struct bp_target_info *bp_tgt, char *buf, |
7868 | char *buf_end) | |
b775012e LM |
7869 | { |
7870 | struct agent_expr *aexpr = NULL; | |
7871 | int i, ix; | |
7872 | char *pkt; | |
7873 | char *buf_start = buf; | |
7874 | ||
7875 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7876 | return 0; | |
7877 | ||
7878 | buf += strlen (buf); | |
bba74b36 | 7879 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
7880 | buf++; |
7881 | ||
7882 | /* Send conditions to the target and free the vector. */ | |
7883 | for (ix = 0; | |
7884 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
7885 | ix++) | |
7886 | { | |
bba74b36 | 7887 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e LM |
7888 | buf += strlen (buf); |
7889 | for (i = 0; i < aexpr->len; ++i) | |
7890 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
7891 | *buf = '\0'; | |
7892 | } | |
7893 | ||
7894 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
7895 | return 0; | |
7896 | } | |
7897 | ||
d3ce09f5 SS |
7898 | static void |
7899 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
7900 | struct bp_target_info *bp_tgt, char *buf) | |
7901 | { | |
7902 | struct agent_expr *aexpr = NULL; | |
7903 | int i, ix; | |
7904 | ||
7905 | if (VEC_empty (agent_expr_p, bp_tgt->tcommands)) | |
7906 | return; | |
7907 | ||
7908 | buf += strlen (buf); | |
7909 | ||
7910 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
7911 | buf += strlen (buf); | |
7912 | ||
7913 | /* Concatenate all the agent expressions that are commands into the | |
7914 | cmds parameter. */ | |
7915 | for (ix = 0; | |
7916 | VEC_iterate (agent_expr_p, bp_tgt->tcommands, ix, aexpr); | |
7917 | ix++) | |
7918 | { | |
7919 | sprintf (buf, "X%x,", aexpr->len); | |
7920 | buf += strlen (buf); | |
7921 | for (i = 0; i < aexpr->len; ++i) | |
7922 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
7923 | *buf = '\0'; | |
7924 | } | |
7925 | ||
7926 | VEC_free (agent_expr_p, bp_tgt->tcommands); | |
7927 | } | |
7928 | ||
8181d85f DJ |
7929 | /* Insert a breakpoint. On targets that have software breakpoint |
7930 | support, we ask the remote target to do the work; on targets | |
7931 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7932 | |
7933 | static int | |
a6d9a66e UW |
7934 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7935 | struct bp_target_info *bp_tgt) | |
c906108c | 7936 | { |
d471ea57 AC |
7937 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7938 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7939 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7940 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7941 | |
444abaca | 7942 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7943 | { |
7c0f6dcc | 7944 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 | 7945 | struct remote_state *rs; |
bba74b36 | 7946 | char *p, *endbuf; |
7c0f6dcc | 7947 | int bpsize; |
b775012e | 7948 | struct condition_list *cond = NULL; |
4fff2411 | 7949 | |
a1dcb23a | 7950 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7951 | |
7952 | rs = get_remote_state (); | |
7953 | p = rs->buf; | |
bba74b36 | 7954 | endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 7955 | |
96baa820 JM |
7956 | *(p++) = 'Z'; |
7957 | *(p++) = '0'; | |
7958 | *(p++) = ','; | |
7c0f6dcc | 7959 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7960 | p += hexnumstr (p, addr); |
bba74b36 | 7961 | xsnprintf (p, endbuf - p, ",%d", bpsize); |
802188a7 | 7962 | |
b775012e | 7963 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 7964 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 7965 | |
d3ce09f5 SS |
7966 | if (remote_can_run_breakpoint_commands ()) |
7967 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
7968 | ||
6d820c5c DJ |
7969 | putpkt (rs->buf); |
7970 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7971 | |
6d820c5c | 7972 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7973 | { |
d471ea57 AC |
7974 | case PACKET_ERROR: |
7975 | return -1; | |
7976 | case PACKET_OK: | |
7c0f6dcc JL |
7977 | bp_tgt->placed_address = addr; |
7978 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7979 | return 0; |
7980 | case PACKET_UNKNOWN: | |
7981 | break; | |
96baa820 JM |
7982 | } |
7983 | } | |
c906108c | 7984 | |
a6d9a66e | 7985 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7986 | } |
7987 | ||
7988 | static int | |
a6d9a66e UW |
7989 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7990 | struct bp_target_info *bp_tgt) | |
c906108c | 7991 | { |
8181d85f | 7992 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7993 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7994 | |
444abaca | 7995 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7996 | { |
6d820c5c | 7997 | char *p = rs->buf; |
bba74b36 | 7998 | char *endbuf = rs->buf + get_remote_packet_size (); |
802188a7 | 7999 | |
96baa820 JM |
8000 | *(p++) = 'z'; |
8001 | *(p++) = '0'; | |
8002 | *(p++) = ','; | |
8003 | ||
8181d85f DJ |
8004 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
8005 | p += hexnumstr (p, addr); | |
bba74b36 | 8006 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->placed_size); |
802188a7 | 8007 | |
6d820c5c DJ |
8008 | putpkt (rs->buf); |
8009 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8010 | |
6d820c5c | 8011 | return (rs->buf[0] == 'E'); |
96baa820 JM |
8012 | } |
8013 | ||
a6d9a66e | 8014 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
8015 | } |
8016 | ||
d471ea57 AC |
8017 | static int |
8018 | watchpoint_to_Z_packet (int type) | |
8019 | { | |
8020 | switch (type) | |
8021 | { | |
8022 | case hw_write: | |
bb858e6a | 8023 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
8024 | break; |
8025 | case hw_read: | |
bb858e6a | 8026 | return Z_PACKET_READ_WP; |
d471ea57 AC |
8027 | break; |
8028 | case hw_access: | |
bb858e6a | 8029 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
8030 | break; |
8031 | default: | |
8e65ff28 | 8032 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8033 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
8034 | } |
8035 | } | |
8036 | ||
3c3bea1c | 8037 | static int |
0cf6dd15 TJB |
8038 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
8039 | struct expression *cond) | |
96baa820 | 8040 | { |
d01949b6 | 8041 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8042 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8043 | char *p; |
d471ea57 | 8044 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 8045 | |
444abaca | 8046 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 8047 | return 1; |
802188a7 | 8048 | |
bba74b36 | 8049 | xsnprintf (rs->buf, endbuf - rs->buf, "Z%x,", packet); |
6d820c5c | 8050 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8051 | addr = remote_address_masked (addr); |
8052 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8053 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 8054 | |
6d820c5c DJ |
8055 | putpkt (rs->buf); |
8056 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8057 | |
6d820c5c | 8058 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8059 | { |
8060 | case PACKET_ERROR: | |
d471ea57 | 8061 | return -1; |
85d721b8 PA |
8062 | case PACKET_UNKNOWN: |
8063 | return 1; | |
d471ea57 AC |
8064 | case PACKET_OK: |
8065 | return 0; | |
8066 | } | |
8e65ff28 | 8067 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8068 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
8069 | } |
8070 | ||
283002cf MR |
8071 | static int |
8072 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
8073 | CORE_ADDR start, int length) | |
8074 | { | |
8075 | CORE_ADDR diff = remote_address_masked (addr - start); | |
8076 | ||
8077 | return diff < length; | |
8078 | } | |
8079 | ||
d471ea57 | 8080 | |
3c3bea1c | 8081 | static int |
0cf6dd15 TJB |
8082 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
8083 | struct expression *cond) | |
96baa820 | 8084 | { |
d01949b6 | 8085 | struct remote_state *rs = get_remote_state (); |
bba74b36 | 8086 | char *endbuf = rs->buf + get_remote_packet_size (); |
e514a9d6 | 8087 | char *p; |
d471ea57 AC |
8088 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
8089 | ||
444abaca | 8090 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 8091 | return -1; |
802188a7 | 8092 | |
bba74b36 | 8093 | xsnprintf (rs->buf, endbuf - rs->buf, "z%x,", packet); |
6d820c5c | 8094 | p = strchr (rs->buf, '\0'); |
96baa820 JM |
8095 | addr = remote_address_masked (addr); |
8096 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 8097 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c DJ |
8098 | putpkt (rs->buf); |
8099 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8100 | |
6d820c5c | 8101 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
8102 | { |
8103 | case PACKET_ERROR: | |
8104 | case PACKET_UNKNOWN: | |
8105 | return -1; | |
8106 | case PACKET_OK: | |
8107 | return 0; | |
8108 | } | |
8e65ff28 | 8109 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8110 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
8111 | } |
8112 | ||
3c3bea1c | 8113 | |
501eef12 | 8114 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 8115 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 8116 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 8117 | |
480a3f21 PW |
8118 | static int |
8119 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
8120 | { | |
8121 | if (remote_hw_watchpoint_length_limit == 0) | |
8122 | return 0; | |
8123 | else if (remote_hw_watchpoint_length_limit < 0) | |
8124 | return 1; | |
8125 | else if (len <= remote_hw_watchpoint_length_limit) | |
8126 | return 1; | |
8127 | else | |
8128 | return 0; | |
8129 | } | |
8130 | ||
b9362cc7 | 8131 | static int |
3c3bea1c | 8132 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 8133 | { |
3c3bea1c GS |
8134 | if (type == bp_hardware_breakpoint) |
8135 | { | |
8136 | if (remote_hw_breakpoint_limit == 0) | |
8137 | return 0; | |
501eef12 AC |
8138 | else if (remote_hw_breakpoint_limit < 0) |
8139 | return 1; | |
3c3bea1c GS |
8140 | else if (cnt <= remote_hw_breakpoint_limit) |
8141 | return 1; | |
8142 | } | |
8143 | else | |
8144 | { | |
8145 | if (remote_hw_watchpoint_limit == 0) | |
8146 | return 0; | |
501eef12 AC |
8147 | else if (remote_hw_watchpoint_limit < 0) |
8148 | return 1; | |
3c3bea1c GS |
8149 | else if (ot) |
8150 | return -1; | |
8151 | else if (cnt <= remote_hw_watchpoint_limit) | |
8152 | return 1; | |
8153 | } | |
8154 | return -1; | |
8155 | } | |
8156 | ||
b9362cc7 | 8157 | static int |
3c3bea1c GS |
8158 | remote_stopped_by_watchpoint (void) |
8159 | { | |
82f73884 | 8160 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
8161 | } |
8162 | ||
4aa7a7f5 JJ |
8163 | static int |
8164 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 8165 | { |
4aa7a7f5 | 8166 | int rc = 0; |
a744cf53 | 8167 | |
d983da9c | 8168 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
8169 | { |
8170 | *addr_p = remote_watch_data_address; | |
8171 | rc = 1; | |
8172 | } | |
8173 | ||
8174 | return rc; | |
3c3bea1c GS |
8175 | } |
8176 | ||
8177 | ||
8178 | static int | |
a6d9a66e UW |
8179 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8180 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8181 | { |
8181d85f | 8182 | CORE_ADDR addr; |
4fff2411 | 8183 | struct remote_state *rs; |
bba74b36 | 8184 | char *p, *endbuf; |
dd61ec5c | 8185 | char *message; |
802188a7 | 8186 | |
c8189ed1 | 8187 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8188 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8189 | |
a1dcb23a | 8190 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8191 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8192 | |
444abaca | 8193 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8194 | return -1; |
2bc416ba | 8195 | |
4fff2411 JZ |
8196 | rs = get_remote_state (); |
8197 | p = rs->buf; | |
bba74b36 | 8198 | endbuf = rs->buf + get_remote_packet_size (); |
4fff2411 | 8199 | |
96baa820 JM |
8200 | *(p++) = 'Z'; |
8201 | *(p++) = '1'; | |
8202 | *(p++) = ','; | |
802188a7 | 8203 | |
8181d85f | 8204 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8205 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8206 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8207 | |
b775012e | 8208 | if (remote_supports_cond_breakpoints ()) |
bba74b36 | 8209 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 8210 | |
d3ce09f5 SS |
8211 | if (remote_can_run_breakpoint_commands ()) |
8212 | remote_add_target_side_commands (gdbarch, bp_tgt, p); | |
8213 | ||
6d820c5c DJ |
8214 | putpkt (rs->buf); |
8215 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8216 | |
6d820c5c | 8217 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8218 | { |
8219 | case PACKET_ERROR: | |
dd61ec5c MW |
8220 | if (rs->buf[1] == '.') |
8221 | { | |
8222 | message = strchr (rs->buf + 2, '.'); | |
8223 | if (message) | |
8224 | error ("Remote failure reply: %s", message + 1); | |
8225 | } | |
8226 | return -1; | |
d471ea57 AC |
8227 | case PACKET_UNKNOWN: |
8228 | return -1; | |
8229 | case PACKET_OK: | |
8230 | return 0; | |
8231 | } | |
8e65ff28 | 8232 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8233 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8234 | } |
8235 | ||
d471ea57 | 8236 | |
802188a7 | 8237 | static int |
a6d9a66e UW |
8238 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8239 | struct bp_target_info *bp_tgt) | |
96baa820 | 8240 | { |
8181d85f | 8241 | CORE_ADDR addr; |
d01949b6 | 8242 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8243 | char *p = rs->buf; |
bba74b36 | 8244 | char *endbuf = rs->buf + get_remote_packet_size (); |
c8189ed1 | 8245 | |
444abaca | 8246 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8247 | return -1; |
802188a7 | 8248 | |
96baa820 JM |
8249 | *(p++) = 'z'; |
8250 | *(p++) = '1'; | |
8251 | *(p++) = ','; | |
802188a7 | 8252 | |
8181d85f | 8253 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8254 | p += hexnumstr (p, (ULONGEST) addr); |
bba74b36 | 8255 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->placed_size); |
96baa820 | 8256 | |
6d820c5c DJ |
8257 | putpkt (rs->buf); |
8258 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8259 | |
6d820c5c | 8260 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8261 | { |
8262 | case PACKET_ERROR: | |
8263 | case PACKET_UNKNOWN: | |
8264 | return -1; | |
8265 | case PACKET_OK: | |
8266 | return 0; | |
8267 | } | |
8e65ff28 | 8268 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8269 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8270 | } |
96baa820 | 8271 | |
23860348 | 8272 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8273 | |
c5aa993b JM |
8274 | static unsigned long crc32_table[256] = |
8275 | {0, 0}; | |
c906108c SS |
8276 | |
8277 | static unsigned long | |
4a5e7a5b | 8278 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8279 | { |
c5aa993b | 8280 | if (!crc32_table[1]) |
c906108c | 8281 | { |
23860348 | 8282 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8283 | int i, j; |
8284 | unsigned int c; | |
8285 | ||
8286 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8287 | { |
8288 | for (c = i << 24, j = 8; j > 0; --j) | |
8289 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8290 | crc32_table[i] = c; | |
8291 | } | |
c906108c SS |
8292 | } |
8293 | ||
8294 | while (len--) | |
8295 | { | |
8296 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8297 | buf++; | |
8298 | } | |
8299 | return crc; | |
8300 | } | |
8301 | ||
4a5e7a5b PA |
8302 | /* Verify memory using the "qCRC:" request. */ |
8303 | ||
8304 | static int | |
8305 | remote_verify_memory (struct target_ops *ops, | |
8306 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8307 | { | |
8308 | struct remote_state *rs = get_remote_state (); | |
8309 | unsigned long host_crc, target_crc; | |
8310 | char *tmp; | |
8311 | ||
8312 | /* FIXME: assumes lma can fit into long. */ | |
8313 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8314 | (long) lma, (long) size); | |
8315 | putpkt (rs->buf); | |
8316 | ||
8317 | /* Be clever; compute the host_crc before waiting for target | |
8318 | reply. */ | |
8319 | host_crc = crc32 (data, size, 0xffffffff); | |
8320 | ||
8321 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8322 | if (rs->buf[0] == 'E') | |
8323 | return -1; | |
8324 | ||
8325 | if (rs->buf[0] != 'C') | |
8326 | error (_("remote target does not support this operation")); | |
8327 | ||
8328 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8329 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8330 | ||
8331 | return (host_crc == target_crc); | |
8332 | } | |
8333 | ||
c906108c SS |
8334 | /* compare-sections command |
8335 | ||
8336 | With no arguments, compares each loadable section in the exec bfd | |
8337 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8338 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8339 | |
c906108c | 8340 | static void |
fba45db2 | 8341 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8342 | { |
8343 | asection *s; | |
c906108c | 8344 | struct cleanup *old_chain; |
085dd6e6 | 8345 | char *sectdata; |
ce359b09 | 8346 | const char *sectname; |
c906108c SS |
8347 | bfd_size_type size; |
8348 | bfd_vma lma; | |
8349 | int matched = 0; | |
8350 | int mismatched = 0; | |
4a5e7a5b | 8351 | int res; |
c906108c SS |
8352 | |
8353 | if (!exec_bfd) | |
8a3fe4f8 | 8354 | error (_("command cannot be used without an exec file")); |
c906108c | 8355 | |
c5aa993b | 8356 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8357 | { |
8358 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8359 | continue; /* Skip non-loadable section. */ |
c906108c | 8360 | |
2c500098 | 8361 | size = bfd_get_section_size (s); |
c906108c | 8362 | if (size == 0) |
0df8b418 | 8363 | continue; /* Skip zero-length section. */ |
c906108c | 8364 | |
ce359b09 | 8365 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8366 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8367 | continue; /* Not the section selected by user. */ |
c906108c | 8368 | |
0df8b418 | 8369 | matched = 1; /* Do this section. */ |
c906108c | 8370 | lma = s->lma; |
c906108c | 8371 | |
c906108c | 8372 | sectdata = xmalloc (size); |
b8c9b27d | 8373 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8374 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8375 | |
4a5e7a5b PA |
8376 | res = target_verify_memory (sectdata, lma, size); |
8377 | ||
8378 | if (res == -1) | |
5af949e3 UW |
8379 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8380 | paddress (target_gdbarch, lma), | |
8381 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8382 | |
5af949e3 UW |
8383 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8384 | paddress (target_gdbarch, lma), | |
8385 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8386 | if (res) |
c906108c SS |
8387 | printf_filtered ("matched.\n"); |
8388 | else | |
c5aa993b JM |
8389 | { |
8390 | printf_filtered ("MIS-MATCHED!\n"); | |
8391 | mismatched++; | |
8392 | } | |
c906108c SS |
8393 | |
8394 | do_cleanups (old_chain); | |
8395 | } | |
8396 | if (mismatched > 0) | |
8a3fe4f8 AC |
8397 | warning (_("One or more sections of the remote executable does not match\n\ |
8398 | the loaded file\n")); | |
c906108c | 8399 | if (args && !matched) |
a3f17187 | 8400 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8401 | } |
8402 | ||
0e7f50da UW |
8403 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8404 | into remote target. The number of bytes written to the remote | |
8405 | target is returned, or -1 for error. */ | |
8406 | ||
8407 | static LONGEST | |
8408 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8409 | const char *annex, const gdb_byte *writebuf, | |
8410 | ULONGEST offset, LONGEST len, | |
8411 | struct packet_config *packet) | |
8412 | { | |
8413 | int i, buf_len; | |
8414 | ULONGEST n; | |
0e7f50da UW |
8415 | struct remote_state *rs = get_remote_state (); |
8416 | int max_size = get_memory_write_packet_size (); | |
8417 | ||
8418 | if (packet->support == PACKET_DISABLE) | |
8419 | return -1; | |
8420 | ||
8421 | /* Insert header. */ | |
8422 | i = snprintf (rs->buf, max_size, | |
8423 | "qXfer:%s:write:%s:%s:", | |
8424 | object_name, annex ? annex : "", | |
8425 | phex_nz (offset, sizeof offset)); | |
8426 | max_size -= (i + 1); | |
8427 | ||
8428 | /* Escape as much data as fits into rs->buf. */ | |
8429 | buf_len = remote_escape_output | |
8430 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8431 | ||
8432 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8433 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8434 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8435 | return -1; | |
8436 | ||
8437 | unpack_varlen_hex (rs->buf, &n); | |
8438 | return n; | |
8439 | } | |
8440 | ||
0876f84a DJ |
8441 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8442 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8443 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8444 | The number of bytes read may be less than LEN without indicating an | |
8445 | EOF. PACKET is checked and updated to indicate whether the remote | |
8446 | target supports this object. */ | |
8447 | ||
8448 | static LONGEST | |
8449 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8450 | const char *annex, | |
8451 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8452 | struct packet_config *packet) | |
8453 | { | |
8454 | static char *finished_object; | |
8455 | static char *finished_annex; | |
8456 | static ULONGEST finished_offset; | |
8457 | ||
8458 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8459 | LONGEST i, n, packet_len; |
8460 | ||
8461 | if (packet->support == PACKET_DISABLE) | |
8462 | return -1; | |
8463 | ||
8464 | /* Check whether we've cached an end-of-object packet that matches | |
8465 | this request. */ | |
8466 | if (finished_object) | |
8467 | { | |
8468 | if (strcmp (object_name, finished_object) == 0 | |
8469 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8470 | && offset == finished_offset) | |
8471 | return 0; | |
8472 | ||
8473 | /* Otherwise, we're now reading something different. Discard | |
8474 | the cache. */ | |
8475 | xfree (finished_object); | |
8476 | xfree (finished_annex); | |
8477 | finished_object = NULL; | |
8478 | finished_annex = NULL; | |
8479 | } | |
8480 | ||
8481 | /* Request only enough to fit in a single packet. The actual data | |
8482 | may not, since we don't know how much of it will need to be escaped; | |
8483 | the target is free to respond with slightly less data. We subtract | |
8484 | five to account for the response type and the protocol frame. */ | |
8485 | n = min (get_remote_packet_size () - 5, len); | |
8486 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8487 | object_name, annex ? annex : "", | |
8488 | phex_nz (offset, sizeof offset), | |
8489 | phex_nz (n, sizeof n)); | |
8490 | i = putpkt (rs->buf); | |
8491 | if (i < 0) | |
8492 | return -1; | |
8493 | ||
8494 | rs->buf[0] = '\0'; | |
8495 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8496 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8497 | return -1; | |
8498 | ||
8499 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8500 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8501 | ||
8502 | /* 'm' means there is (or at least might be) more data after this | |
8503 | batch. That does not make sense unless there's at least one byte | |
8504 | of data in this reply. */ | |
8505 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8506 | error (_("Remote qXfer reply contained no data.")); | |
8507 | ||
8508 | /* Got some data. */ | |
8509 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8510 | ||
8511 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8512 | or possibly empty. If we have the final block of a non-empty |
8513 | object, record this fact to bypass a subsequent partial read. */ | |
8514 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8515 | { |
8516 | finished_object = xstrdup (object_name); | |
8517 | finished_annex = xstrdup (annex ? annex : ""); | |
8518 | finished_offset = offset + i; | |
8519 | } | |
8520 | ||
8521 | return i; | |
8522 | } | |
8523 | ||
1e3ff5ad | 8524 | static LONGEST |
4b8a223f | 8525 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8526 | const char *annex, gdb_byte *readbuf, |
8527 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8528 | { |
82f73884 | 8529 | struct remote_state *rs; |
c906108c | 8530 | int i; |
6d820c5c | 8531 | char *p2; |
1e3ff5ad | 8532 | char query_type; |
c906108c | 8533 | |
e6e4e701 | 8534 | set_remote_traceframe (); |
82f73884 PA |
8535 | set_general_thread (inferior_ptid); |
8536 | ||
8537 | rs = get_remote_state (); | |
8538 | ||
b2182ed2 | 8539 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8540 | if (object == TARGET_OBJECT_MEMORY) |
8541 | { | |
8542 | int xfered; | |
a744cf53 | 8543 | |
21e3b9b9 DJ |
8544 | errno = 0; |
8545 | ||
2d717e4f DJ |
8546 | /* If the remote target is connected but not running, we should |
8547 | pass this request down to a lower stratum (e.g. the executable | |
8548 | file). */ | |
8549 | if (!target_has_execution) | |
8550 | return 0; | |
8551 | ||
21e3b9b9 | 8552 | if (writebuf != NULL) |
b2182ed2 | 8553 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8554 | else |
b2182ed2 | 8555 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8556 | |
8557 | if (xfered > 0) | |
8558 | return xfered; | |
8559 | else if (xfered == 0 && errno == 0) | |
8560 | return 0; | |
8561 | else | |
8562 | return -1; | |
8563 | } | |
8564 | ||
0df8b418 | 8565 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8566 | if (object == TARGET_OBJECT_SPU) |
8567 | { | |
8568 | if (readbuf) | |
8569 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8570 | &remote_protocol_packets | |
8571 | [PACKET_qXfer_spu_read]); | |
8572 | else | |
8573 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8574 | &remote_protocol_packets | |
8575 | [PACKET_qXfer_spu_write]); | |
8576 | } | |
8577 | ||
4aa995e1 PA |
8578 | /* Handle extra signal info using qxfer packets. */ |
8579 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8580 | { | |
8581 | if (readbuf) | |
8582 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8583 | &remote_protocol_packets | |
8584 | [PACKET_qXfer_siginfo_read]); | |
8585 | else | |
3e43a32a MS |
8586 | return remote_write_qxfer (ops, "siginfo", annex, |
8587 | writebuf, offset, len, | |
4aa995e1 PA |
8588 | &remote_protocol_packets |
8589 | [PACKET_qXfer_siginfo_write]); | |
8590 | } | |
8591 | ||
0fb4aa4b PA |
8592 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8593 | { | |
8594 | if (readbuf) | |
3e43a32a MS |
8595 | return remote_read_qxfer (ops, "statictrace", annex, |
8596 | readbuf, offset, len, | |
0fb4aa4b PA |
8597 | &remote_protocol_packets |
8598 | [PACKET_qXfer_statictrace_read]); | |
8599 | else | |
8600 | return -1; | |
8601 | } | |
8602 | ||
a76d924d DJ |
8603 | /* Only handle flash writes. */ |
8604 | if (writebuf != NULL) | |
8605 | { | |
8606 | LONGEST xfered; | |
8607 | ||
8608 | switch (object) | |
8609 | { | |
8610 | case TARGET_OBJECT_FLASH: | |
8611 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8612 | ||
8613 | if (xfered > 0) | |
8614 | return xfered; | |
8615 | else if (xfered == 0 && errno == 0) | |
8616 | return 0; | |
8617 | else | |
8618 | return -1; | |
8619 | ||
8620 | default: | |
8621 | return -1; | |
8622 | } | |
8623 | } | |
4b8a223f | 8624 | |
1e3ff5ad AC |
8625 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8626 | objects!!! Instead specify new query packets. */ | |
8627 | switch (object) | |
c906108c | 8628 | { |
1e3ff5ad AC |
8629 | case TARGET_OBJECT_AVR: |
8630 | query_type = 'R'; | |
8631 | break; | |
802188a7 RM |
8632 | |
8633 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8634 | gdb_assert (annex == NULL); |
8635 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8636 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8637 | |
23181151 DJ |
8638 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8639 | return remote_read_qxfer | |
8640 | (ops, "features", annex, readbuf, offset, len, | |
8641 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8642 | ||
cfa9d6d9 DJ |
8643 | case TARGET_OBJECT_LIBRARIES: |
8644 | return remote_read_qxfer | |
8645 | (ops, "libraries", annex, readbuf, offset, len, | |
8646 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8647 | ||
2268b414 JK |
8648 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8649 | return remote_read_qxfer | |
8650 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8651 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8652 | ||
fd79ecee DJ |
8653 | case TARGET_OBJECT_MEMORY_MAP: |
8654 | gdb_assert (annex == NULL); | |
8655 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8656 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8657 | ||
07e059b5 VP |
8658 | case TARGET_OBJECT_OSDATA: |
8659 | /* Should only get here if we're connected. */ | |
8660 | gdb_assert (remote_desc); | |
8661 | return remote_read_qxfer | |
8662 | (ops, "osdata", annex, readbuf, offset, len, | |
8663 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8664 | ||
dc146f7c VP |
8665 | case TARGET_OBJECT_THREADS: |
8666 | gdb_assert (annex == NULL); | |
8667 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8668 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8669 | ||
b3b9301e PA |
8670 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8671 | gdb_assert (annex == NULL); | |
8672 | return remote_read_qxfer | |
8673 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8674 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8675 | |
8676 | case TARGET_OBJECT_FDPIC: | |
8677 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8678 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8679 | |
8680 | case TARGET_OBJECT_OPENVMS_UIB: | |
8681 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8682 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8683 | ||
1e3ff5ad | 8684 | default: |
c906108c SS |
8685 | return -1; |
8686 | } | |
8687 | ||
4b8a223f | 8688 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8689 | buffer size. */ |
4b8a223f | 8690 | if (offset == 0 && len == 0) |
ea9c271d | 8691 | return (get_remote_packet_size ()); |
0df8b418 | 8692 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8693 | large enough let the caller deal with it. */ |
ea9c271d | 8694 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8695 | return -1; |
ea9c271d | 8696 | len = get_remote_packet_size (); |
1e3ff5ad | 8697 | |
23860348 | 8698 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8699 | if (!remote_desc) |
8a3fe4f8 | 8700 | error (_("remote query is only available after target open")); |
c906108c | 8701 | |
1e3ff5ad | 8702 | gdb_assert (annex != NULL); |
4b8a223f | 8703 | gdb_assert (readbuf != NULL); |
c906108c | 8704 | |
6d820c5c | 8705 | p2 = rs->buf; |
c906108c SS |
8706 | *p2++ = 'q'; |
8707 | *p2++ = query_type; | |
8708 | ||
23860348 MS |
8709 | /* We used one buffer char for the remote protocol q command and |
8710 | another for the query type. As the remote protocol encapsulation | |
8711 | uses 4 chars plus one extra in case we are debugging | |
8712 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8713 | string. */ | |
c906108c | 8714 | i = 0; |
ea9c271d | 8715 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8716 | { |
1e3ff5ad AC |
8717 | /* Bad caller may have sent forbidden characters. */ |
8718 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8719 | *p2++ = annex[i]; | |
c906108c SS |
8720 | i++; |
8721 | } | |
1e3ff5ad AC |
8722 | *p2 = '\0'; |
8723 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8724 | |
6d820c5c | 8725 | i = putpkt (rs->buf); |
c5aa993b JM |
8726 | if (i < 0) |
8727 | return i; | |
c906108c | 8728 | |
6d820c5c DJ |
8729 | getpkt (&rs->buf, &rs->buf_size, 0); |
8730 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8731 | |
cfd77fa1 | 8732 | return strlen ((char *) readbuf); |
c906108c SS |
8733 | } |
8734 | ||
08388c79 DE |
8735 | static int |
8736 | remote_search_memory (struct target_ops* ops, | |
8737 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8738 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8739 | CORE_ADDR *found_addrp) | |
8740 | { | |
5af949e3 | 8741 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8742 | struct remote_state *rs = get_remote_state (); |
8743 | int max_size = get_memory_write_packet_size (); | |
8744 | struct packet_config *packet = | |
8745 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8746 | /* Number of packet bytes used to encode the pattern; |
8747 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8748 | int escaped_pattern_len; |
0df8b418 | 8749 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8750 | int used_pattern_len; |
8751 | int i; | |
8752 | int found; | |
8753 | ULONGEST found_addr; | |
8754 | ||
8755 | /* Don't go to the target if we don't have to. | |
8756 | This is done before checking packet->support to avoid the possibility that | |
8757 | a success for this edge case means the facility works in general. */ | |
8758 | if (pattern_len > search_space_len) | |
8759 | return 0; | |
8760 | if (pattern_len == 0) | |
8761 | { | |
8762 | *found_addrp = start_addr; | |
8763 | return 1; | |
8764 | } | |
8765 | ||
8766 | /* If we already know the packet isn't supported, fall back to the simple | |
8767 | way of searching memory. */ | |
8768 | ||
8769 | if (packet->support == PACKET_DISABLE) | |
8770 | { | |
8771 | /* Target doesn't provided special support, fall back and use the | |
8772 | standard support (copy memory and do the search here). */ | |
8773 | return simple_search_memory (ops, start_addr, search_space_len, | |
8774 | pattern, pattern_len, found_addrp); | |
8775 | } | |
8776 | ||
8777 | /* Insert header. */ | |
8778 | i = snprintf (rs->buf, max_size, | |
8779 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8780 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8781 | phex_nz (search_space_len, sizeof (search_space_len))); |
8782 | max_size -= (i + 1); | |
8783 | ||
8784 | /* Escape as much data as fits into rs->buf. */ | |
8785 | escaped_pattern_len = | |
8786 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8787 | &used_pattern_len, max_size); | |
8788 | ||
8789 | /* Bail if the pattern is too large. */ | |
8790 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8791 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8792 | |
8793 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8794 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8795 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8796 | { | |
8797 | /* The request may not have worked because the command is not | |
8798 | supported. If so, fall back to the simple way. */ | |
8799 | if (packet->support == PACKET_DISABLE) | |
8800 | { | |
8801 | return simple_search_memory (ops, start_addr, search_space_len, | |
8802 | pattern, pattern_len, found_addrp); | |
8803 | } | |
8804 | return -1; | |
8805 | } | |
8806 | ||
8807 | if (rs->buf[0] == '0') | |
8808 | found = 0; | |
8809 | else if (rs->buf[0] == '1') | |
8810 | { | |
8811 | found = 1; | |
8812 | if (rs->buf[1] != ',') | |
10e0fa18 | 8813 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8814 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8815 | *found_addrp = found_addr; | |
8816 | } | |
8817 | else | |
10e0fa18 | 8818 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8819 | |
8820 | return found; | |
8821 | } | |
8822 | ||
96baa820 JM |
8823 | static void |
8824 | remote_rcmd (char *command, | |
d9fcf2fb | 8825 | struct ui_file *outbuf) |
96baa820 | 8826 | { |
d01949b6 | 8827 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8828 | char *p = rs->buf; |
96baa820 JM |
8829 | |
8830 | if (!remote_desc) | |
8a3fe4f8 | 8831 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8832 | |
23860348 | 8833 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8834 | if (command == NULL) |
8835 | command = ""; | |
8836 | ||
23860348 | 8837 | /* The query prefix. */ |
2e9f7625 DJ |
8838 | strcpy (rs->buf, "qRcmd,"); |
8839 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8840 | |
3e43a32a MS |
8841 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8842 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8843 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8844 | |
23860348 | 8845 | /* Encode the actual command. */ |
cfd77fa1 | 8846 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8847 | |
6d820c5c | 8848 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8849 | error (_("Communication problem with target.")); |
96baa820 JM |
8850 | |
8851 | /* get/display the response */ | |
8852 | while (1) | |
8853 | { | |
2e9f7625 DJ |
8854 | char *buf; |
8855 | ||
00bf0b85 | 8856 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8857 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 8858 | rs->buf[0] = '\0'; |
5b37825d PW |
8859 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
8860 | { | |
8861 | /* Timeout. Continue to (try to) read responses. | |
8862 | This is better than stopping with an error, assuming the stub | |
8863 | is still executing the (long) monitor command. | |
8864 | If needed, the user can interrupt gdb using C-c, obtaining | |
8865 | an effect similar to stop on timeout. */ | |
8866 | continue; | |
8867 | } | |
2e9f7625 | 8868 | buf = rs->buf; |
96baa820 | 8869 | if (buf[0] == '\0') |
8a3fe4f8 | 8870 | error (_("Target does not support this command.")); |
96baa820 JM |
8871 | if (buf[0] == 'O' && buf[1] != 'K') |
8872 | { | |
23860348 | 8873 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8874 | continue; |
8875 | } | |
8876 | if (strcmp (buf, "OK") == 0) | |
8877 | break; | |
7be570e7 JM |
8878 | if (strlen (buf) == 3 && buf[0] == 'E' |
8879 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8880 | { | |
8a3fe4f8 | 8881 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8882 | } |
96baa820 JM |
8883 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8884 | { | |
8885 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8886 | |
96baa820 JM |
8887 | fputc_unfiltered (c, outbuf); |
8888 | } | |
8889 | break; | |
8890 | } | |
8891 | } | |
8892 | ||
fd79ecee DJ |
8893 | static VEC(mem_region_s) * |
8894 | remote_memory_map (struct target_ops *ops) | |
8895 | { | |
8896 | VEC(mem_region_s) *result = NULL; | |
8897 | char *text = target_read_stralloc (¤t_target, | |
8898 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8899 | ||
8900 | if (text) | |
8901 | { | |
8902 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8903 | |
fd79ecee DJ |
8904 | result = parse_memory_map (text); |
8905 | do_cleanups (back_to); | |
8906 | } | |
8907 | ||
8908 | return result; | |
8909 | } | |
8910 | ||
c906108c | 8911 | static void |
fba45db2 | 8912 | packet_command (char *args, int from_tty) |
c906108c | 8913 | { |
d01949b6 | 8914 | struct remote_state *rs = get_remote_state (); |
c906108c | 8915 | |
c5aa993b | 8916 | if (!remote_desc) |
8a3fe4f8 | 8917 | error (_("command can only be used with remote target")); |
c906108c | 8918 | |
c5aa993b | 8919 | if (!args) |
8a3fe4f8 | 8920 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8921 | |
8922 | puts_filtered ("sending: "); | |
8923 | print_packet (args); | |
8924 | puts_filtered ("\n"); | |
8925 | putpkt (args); | |
8926 | ||
6d820c5c | 8927 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8928 | puts_filtered ("received: "); |
6d820c5c | 8929 | print_packet (rs->buf); |
c906108c SS |
8930 | puts_filtered ("\n"); |
8931 | } | |
8932 | ||
8933 | #if 0 | |
23860348 | 8934 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8935 | |
a14ed312 | 8936 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8937 | |
a14ed312 | 8938 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8939 | |
a14ed312 | 8940 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8941 | |
a14ed312 | 8942 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8943 | |
23860348 | 8944 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8945 | |
a14ed312 | 8946 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8947 | |
23860348 | 8948 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8949 | |
a14ed312 | 8950 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8951 | |
a14ed312 | 8952 | static void init_remote_threadtests (void); |
c906108c | 8953 | |
23860348 | 8954 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8955 | |
8956 | static void | |
fba45db2 | 8957 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8958 | { |
8959 | int sample_thread = SAMPLE_THREAD; | |
8960 | ||
a3f17187 | 8961 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8962 | set_general_thread (sample_thread); |
c906108c SS |
8963 | } |
8964 | ||
8965 | ||
8966 | static void | |
fba45db2 | 8967 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8968 | { |
8969 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8970 | int pid = ptid_get_pid (inferior_ptid); |
8971 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8972 | |
79d7f229 | 8973 | if (remote_thread_alive (ptid)) |
c906108c SS |
8974 | printf_filtered ("PASS: Thread alive test\n"); |
8975 | else | |
8976 | printf_filtered ("FAIL: Thread alive test\n"); | |
8977 | } | |
8978 | ||
23860348 | 8979 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8980 | |
8981 | void | |
fba45db2 | 8982 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8983 | { |
8984 | char hexid[20]; | |
8985 | ||
23860348 | 8986 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8987 | hexid[16] = 0; |
8988 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8989 | } | |
8990 | ||
8991 | static void | |
fba45db2 | 8992 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8993 | { |
8994 | int startflag = 1; | |
8995 | threadref nextthread; | |
8996 | int done, result_count; | |
8997 | threadref threadlist[3]; | |
8998 | ||
8999 | printf_filtered ("Remote Threadlist test\n"); | |
9000 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
9001 | &result_count, &threadlist[0])) | |
9002 | printf_filtered ("FAIL: threadlist test\n"); | |
9003 | else | |
9004 | { | |
9005 | threadref *scan = threadlist; | |
9006 | threadref *limit = scan + result_count; | |
9007 | ||
9008 | while (scan < limit) | |
9009 | output_threadid (" thread ", scan++); | |
9010 | } | |
9011 | } | |
9012 | ||
9013 | void | |
fba45db2 | 9014 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
9015 | { |
9016 | output_threadid ("Threadid: ", &info->threadid); | |
9017 | printf_filtered ("Name: %s\n ", info->shortname); | |
9018 | printf_filtered ("State: %s\n", info->display); | |
9019 | printf_filtered ("other: %s\n\n", info->more_display); | |
9020 | } | |
9021 | ||
9022 | int | |
fba45db2 | 9023 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
9024 | { |
9025 | int result; | |
9026 | int set; | |
9027 | struct gdb_ext_thread_info threadinfo; | |
9028 | ||
9029 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
9030 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
9031 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
9032 | display_thread_info (&threadinfo); | |
9033 | return result; | |
9034 | } | |
9035 | ||
9036 | static void | |
fba45db2 | 9037 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
9038 | { |
9039 | int athread = SAMPLE_THREAD; | |
9040 | threadref thread; | |
9041 | int set; | |
9042 | ||
9043 | int_to_threadref (&thread, athread); | |
9044 | printf_filtered ("Remote Threadinfo test\n"); | |
9045 | if (!get_and_display_threadinfo (&thread)) | |
9046 | printf_filtered ("FAIL cannot get thread info\n"); | |
9047 | } | |
9048 | ||
9049 | static int | |
fba45db2 | 9050 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
9051 | { |
9052 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
9053 | return get_and_display_threadinfo (ref); | |
9054 | } | |
9055 | ||
9056 | static void | |
fba45db2 | 9057 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
9058 | { |
9059 | printf_filtered ("Remote Threadlist update test\n"); | |
9060 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
9061 | } | |
9062 | ||
9063 | static void | |
9064 | init_remote_threadtests (void) | |
9065 | { | |
3e43a32a MS |
9066 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
9067 | _("Fetch and print the remote list of " | |
9068 | "thread identifiers, one pkt only")); | |
c906108c | 9069 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 9070 | _("Fetch and display info about one thread")); |
c906108c | 9071 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 9072 | _("Test setting to a different thread")); |
c906108c | 9073 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 9074 | _("Iterate through updating all remote thread info")); |
c906108c | 9075 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 9076 | _(" Remote thread alive test ")); |
c906108c SS |
9077 | } |
9078 | ||
9079 | #endif /* 0 */ | |
9080 | ||
f3fb8c85 MS |
9081 | /* Convert a thread ID to a string. Returns the string in a static |
9082 | buffer. */ | |
9083 | ||
9084 | static char * | |
117de6a9 | 9085 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 9086 | { |
79d7f229 | 9087 | static char buf[64]; |
82f73884 | 9088 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 9089 | |
7cee1e54 PA |
9090 | if (ptid_equal (ptid, null_ptid)) |
9091 | return normal_pid_to_str (ptid); | |
9092 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
9093 | { |
9094 | /* Printing an inferior target id. */ | |
9095 | ||
9096 | /* When multi-process extensions are off, there's no way in the | |
9097 | remote protocol to know the remote process id, if there's any | |
9098 | at all. There's one exception --- when we're connected with | |
9099 | target extended-remote, and we manually attached to a process | |
9100 | with "attach PID". We don't record anywhere a flag that | |
9101 | allows us to distinguish that case from the case of | |
9102 | connecting with extended-remote and the stub already being | |
9103 | attached to a process, and reporting yes to qAttached, hence | |
9104 | no smart special casing here. */ | |
9105 | if (!remote_multi_process_p (rs)) | |
9106 | { | |
9107 | xsnprintf (buf, sizeof buf, "Remote target"); | |
9108 | return buf; | |
9109 | } | |
9110 | ||
9111 | return normal_pid_to_str (ptid); | |
82f73884 | 9112 | } |
ecd0ada5 | 9113 | else |
79d7f229 | 9114 | { |
ecd0ada5 PA |
9115 | if (ptid_equal (magic_null_ptid, ptid)) |
9116 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 9117 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
9118 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
9119 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
9120 | else | |
9121 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
9122 | ptid_get_tid (ptid)); | |
79d7f229 PA |
9123 | return buf; |
9124 | } | |
f3fb8c85 MS |
9125 | } |
9126 | ||
38691318 KB |
9127 | /* Get the address of the thread local variable in OBJFILE which is |
9128 | stored at OFFSET within the thread local storage for thread PTID. */ | |
9129 | ||
9130 | static CORE_ADDR | |
117de6a9 PA |
9131 | remote_get_thread_local_address (struct target_ops *ops, |
9132 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 9133 | { |
444abaca | 9134 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
9135 | { |
9136 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 9137 | char *p = rs->buf; |
82f73884 | 9138 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 9139 | enum packet_result result; |
38691318 KB |
9140 | |
9141 | strcpy (p, "qGetTLSAddr:"); | |
9142 | p += strlen (p); | |
82f73884 | 9143 | p = write_ptid (p, endp, ptid); |
38691318 KB |
9144 | *p++ = ','; |
9145 | p += hexnumstr (p, offset); | |
9146 | *p++ = ','; | |
9147 | p += hexnumstr (p, lm); | |
9148 | *p++ = '\0'; | |
9149 | ||
6d820c5c DJ |
9150 | putpkt (rs->buf); |
9151 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
9152 | result = packet_ok (rs->buf, |
9153 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 9154 | if (result == PACKET_OK) |
38691318 KB |
9155 | { |
9156 | ULONGEST result; | |
9157 | ||
6d820c5c | 9158 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
9159 | return result; |
9160 | } | |
571dd617 | 9161 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
9162 | throw_error (TLS_GENERIC_ERROR, |
9163 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 9164 | else |
109c3e39 AC |
9165 | throw_error (TLS_GENERIC_ERROR, |
9166 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
9167 | } |
9168 | else | |
109c3e39 AC |
9169 | throw_error (TLS_GENERIC_ERROR, |
9170 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
9171 | /* Not reached. */ |
9172 | return 0; | |
9173 | } | |
9174 | ||
711e434b PM |
9175 | /* Provide thread local base, i.e. Thread Information Block address. |
9176 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
9177 | ||
70221824 | 9178 | static int |
711e434b PM |
9179 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
9180 | { | |
9181 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
9182 | { | |
9183 | struct remote_state *rs = get_remote_state (); | |
9184 | char *p = rs->buf; | |
9185 | char *endp = rs->buf + get_remote_packet_size (); | |
9186 | enum packet_result result; | |
9187 | ||
9188 | strcpy (p, "qGetTIBAddr:"); | |
9189 | p += strlen (p); | |
9190 | p = write_ptid (p, endp, ptid); | |
9191 | *p++ = '\0'; | |
9192 | ||
9193 | putpkt (rs->buf); | |
9194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9195 | result = packet_ok (rs->buf, | |
9196 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9197 | if (result == PACKET_OK) | |
9198 | { | |
9199 | ULONGEST result; | |
9200 | ||
9201 | unpack_varlen_hex (rs->buf, &result); | |
9202 | if (addr) | |
9203 | *addr = (CORE_ADDR) result; | |
9204 | return 1; | |
9205 | } | |
9206 | else if (result == PACKET_UNKNOWN) | |
9207 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9208 | else | |
9209 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9210 | } | |
9211 | else | |
9212 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9213 | /* Not reached. */ | |
9214 | return 0; | |
9215 | } | |
9216 | ||
29709017 DJ |
9217 | /* Support for inferring a target description based on the current |
9218 | architecture and the size of a 'g' packet. While the 'g' packet | |
9219 | can have any size (since optional registers can be left off the | |
9220 | end), some sizes are easily recognizable given knowledge of the | |
9221 | approximate architecture. */ | |
9222 | ||
9223 | struct remote_g_packet_guess | |
9224 | { | |
9225 | int bytes; | |
9226 | const struct target_desc *tdesc; | |
9227 | }; | |
9228 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9229 | DEF_VEC_O(remote_g_packet_guess_s); | |
9230 | ||
9231 | struct remote_g_packet_data | |
9232 | { | |
9233 | VEC(remote_g_packet_guess_s) *guesses; | |
9234 | }; | |
9235 | ||
9236 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9237 | ||
9238 | static void * | |
9239 | remote_g_packet_data_init (struct obstack *obstack) | |
9240 | { | |
9241 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9242 | } | |
9243 | ||
9244 | void | |
9245 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9246 | const struct target_desc *tdesc) | |
9247 | { | |
9248 | struct remote_g_packet_data *data | |
9249 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9250 | struct remote_g_packet_guess new_guess, *guess; | |
9251 | int ix; | |
9252 | ||
9253 | gdb_assert (tdesc != NULL); | |
9254 | ||
9255 | for (ix = 0; | |
9256 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9257 | ix++) | |
9258 | if (guess->bytes == bytes) | |
9259 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9260 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9261 | bytes); |
9262 | ||
9263 | new_guess.bytes = bytes; | |
9264 | new_guess.tdesc = tdesc; | |
9265 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9266 | } | |
9267 | ||
d962ef82 DJ |
9268 | /* Return 1 if remote_read_description would do anything on this target |
9269 | and architecture, 0 otherwise. */ | |
9270 | ||
9271 | static int | |
9272 | remote_read_description_p (struct target_ops *target) | |
9273 | { | |
9274 | struct remote_g_packet_data *data | |
9275 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
9276 | ||
9277 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9278 | return 1; | |
9279 | ||
9280 | return 0; | |
9281 | } | |
9282 | ||
29709017 DJ |
9283 | static const struct target_desc * |
9284 | remote_read_description (struct target_ops *target) | |
9285 | { | |
9286 | struct remote_g_packet_data *data | |
1cf3db46 | 9287 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 9288 | |
d962ef82 DJ |
9289 | /* Do not try this during initial connection, when we do not know |
9290 | whether there is a running but stopped thread. */ | |
9291 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9292 | return NULL; | |
9293 | ||
29709017 DJ |
9294 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9295 | { | |
9296 | struct remote_g_packet_guess *guess; | |
9297 | int ix; | |
9298 | int bytes = send_g_packet (); | |
9299 | ||
9300 | for (ix = 0; | |
9301 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9302 | ix++) | |
9303 | if (guess->bytes == bytes) | |
9304 | return guess->tdesc; | |
9305 | ||
9306 | /* We discard the g packet. A minor optimization would be to | |
9307 | hold on to it, and fill the register cache once we have selected | |
9308 | an architecture, but it's too tricky to do safely. */ | |
9309 | } | |
9310 | ||
9311 | return NULL; | |
9312 | } | |
9313 | ||
a6b151f1 DJ |
9314 | /* Remote file transfer support. This is host-initiated I/O, not |
9315 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9316 | ||
9317 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9318 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9319 | decrease *LEFT. Otherwise raise an error. */ | |
9320 | ||
9321 | static void | |
9322 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9323 | { | |
9324 | int len = strlen (string); | |
9325 | ||
9326 | if (len > *left) | |
9327 | error (_("Packet too long for target.")); | |
9328 | ||
9329 | memcpy (*buffer, string, len); | |
9330 | *buffer += len; | |
9331 | *left -= len; | |
9332 | ||
9333 | /* NUL-terminate the buffer as a convenience, if there is | |
9334 | room. */ | |
9335 | if (*left) | |
9336 | **buffer = '\0'; | |
9337 | } | |
9338 | ||
9339 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9340 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9341 | decrease *LEFT. Otherwise raise an error. */ | |
9342 | ||
9343 | static void | |
9344 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9345 | int len) | |
9346 | { | |
9347 | if (2 * len > *left) | |
9348 | error (_("Packet too long for target.")); | |
9349 | ||
9350 | bin2hex (bytes, *buffer, len); | |
9351 | *buffer += 2 * len; | |
9352 | *left -= 2 * len; | |
9353 | ||
9354 | /* NUL-terminate the buffer as a convenience, if there is | |
9355 | room. */ | |
9356 | if (*left) | |
9357 | **buffer = '\0'; | |
9358 | } | |
9359 | ||
9360 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9361 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9362 | decrease *LEFT. Otherwise raise an error. */ | |
9363 | ||
9364 | static void | |
9365 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9366 | { | |
9367 | int len = hexnumlen (value); | |
9368 | ||
9369 | if (len > *left) | |
9370 | error (_("Packet too long for target.")); | |
9371 | ||
9372 | hexnumstr (*buffer, value); | |
9373 | *buffer += len; | |
9374 | *left -= len; | |
9375 | ||
9376 | /* NUL-terminate the buffer as a convenience, if there is | |
9377 | room. */ | |
9378 | if (*left) | |
9379 | **buffer = '\0'; | |
9380 | } | |
9381 | ||
9382 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9383 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9384 | was included, and *ATTACHMENT to point to the start of the annex | |
9385 | if any. The length of the packet isn't needed here; there may | |
9386 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9387 | ||
9388 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9389 | -1 is returned, the other variables may not be initialized. */ | |
9390 | ||
9391 | static int | |
9392 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9393 | int *remote_errno, char **attachment) | |
9394 | { | |
9395 | char *p, *p2; | |
9396 | ||
9397 | *remote_errno = 0; | |
9398 | *attachment = NULL; | |
9399 | ||
9400 | if (buffer[0] != 'F') | |
9401 | return -1; | |
9402 | ||
9403 | errno = 0; | |
9404 | *retcode = strtol (&buffer[1], &p, 16); | |
9405 | if (errno != 0 || p == &buffer[1]) | |
9406 | return -1; | |
9407 | ||
9408 | /* Check for ",errno". */ | |
9409 | if (*p == ',') | |
9410 | { | |
9411 | errno = 0; | |
9412 | *remote_errno = strtol (p + 1, &p2, 16); | |
9413 | if (errno != 0 || p + 1 == p2) | |
9414 | return -1; | |
9415 | p = p2; | |
9416 | } | |
9417 | ||
9418 | /* Check for ";attachment". If there is no attachment, the | |
9419 | packet should end here. */ | |
9420 | if (*p == ';') | |
9421 | { | |
9422 | *attachment = p + 1; | |
9423 | return 0; | |
9424 | } | |
9425 | else if (*p == '\0') | |
9426 | return 0; | |
9427 | else | |
9428 | return -1; | |
9429 | } | |
9430 | ||
9431 | /* Send a prepared I/O packet to the target and read its response. | |
9432 | The prepared packet is in the global RS->BUF before this function | |
9433 | is called, and the answer is there when we return. | |
9434 | ||
9435 | COMMAND_BYTES is the length of the request to send, which may include | |
9436 | binary data. WHICH_PACKET is the packet configuration to check | |
9437 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9438 | is set to the error number and -1 is returned. Otherwise the value | |
9439 | returned by the function is returned. | |
9440 | ||
9441 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9442 | attachment is expected; an error will be reported if there's a | |
9443 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9444 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9445 | attachment's length. */ | |
9446 | ||
9447 | static int | |
9448 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9449 | int *remote_errno, char **attachment, | |
9450 | int *attachment_len) | |
9451 | { | |
9452 | struct remote_state *rs = get_remote_state (); | |
9453 | int ret, bytes_read; | |
9454 | char *attachment_tmp; | |
9455 | ||
f1838a98 UW |
9456 | if (!remote_desc |
9457 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9458 | { |
9459 | *remote_errno = FILEIO_ENOSYS; | |
9460 | return -1; | |
9461 | } | |
9462 | ||
9463 | putpkt_binary (rs->buf, command_bytes); | |
9464 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9465 | ||
9466 | /* If it timed out, something is wrong. Don't try to parse the | |
9467 | buffer. */ | |
9468 | if (bytes_read < 0) | |
9469 | { | |
9470 | *remote_errno = FILEIO_EINVAL; | |
9471 | return -1; | |
9472 | } | |
9473 | ||
9474 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9475 | { | |
9476 | case PACKET_ERROR: | |
9477 | *remote_errno = FILEIO_EINVAL; | |
9478 | return -1; | |
9479 | case PACKET_UNKNOWN: | |
9480 | *remote_errno = FILEIO_ENOSYS; | |
9481 | return -1; | |
9482 | case PACKET_OK: | |
9483 | break; | |
9484 | } | |
9485 | ||
9486 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9487 | &attachment_tmp)) | |
9488 | { | |
9489 | *remote_errno = FILEIO_EINVAL; | |
9490 | return -1; | |
9491 | } | |
9492 | ||
9493 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9494 | if ((attachment_tmp == NULL && attachment != NULL) | |
9495 | || (attachment_tmp != NULL && attachment == NULL)) | |
9496 | { | |
9497 | *remote_errno = FILEIO_EINVAL; | |
9498 | return -1; | |
9499 | } | |
9500 | ||
9501 | /* If an attachment was found, it must point into the packet buffer; | |
9502 | work out how many bytes there were. */ | |
9503 | if (attachment_tmp != NULL) | |
9504 | { | |
9505 | *attachment = attachment_tmp; | |
9506 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9507 | } | |
9508 | ||
9509 | return ret; | |
9510 | } | |
9511 | ||
9512 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9513 | remote file descriptor, or -1 if an error occurs (and set | |
9514 | *REMOTE_ERRNO). */ | |
9515 | ||
9516 | static int | |
9517 | remote_hostio_open (const char *filename, int flags, int mode, | |
9518 | int *remote_errno) | |
9519 | { | |
9520 | struct remote_state *rs = get_remote_state (); | |
9521 | char *p = rs->buf; | |
9522 | int left = get_remote_packet_size () - 1; | |
9523 | ||
9524 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9525 | ||
9526 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9527 | strlen (filename)); | |
9528 | remote_buffer_add_string (&p, &left, ","); | |
9529 | ||
9530 | remote_buffer_add_int (&p, &left, flags); | |
9531 | remote_buffer_add_string (&p, &left, ","); | |
9532 | ||
9533 | remote_buffer_add_int (&p, &left, mode); | |
9534 | ||
9535 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9536 | remote_errno, NULL, NULL); | |
9537 | } | |
9538 | ||
9539 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9540 | Return the number of bytes written, or -1 if an error occurs (and | |
9541 | set *REMOTE_ERRNO). */ | |
9542 | ||
9543 | static int | |
9544 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9545 | ULONGEST offset, int *remote_errno) | |
9546 | { | |
9547 | struct remote_state *rs = get_remote_state (); | |
9548 | char *p = rs->buf; | |
9549 | int left = get_remote_packet_size (); | |
9550 | int out_len; | |
9551 | ||
9552 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9553 | ||
9554 | remote_buffer_add_int (&p, &left, fd); | |
9555 | remote_buffer_add_string (&p, &left, ","); | |
9556 | ||
9557 | remote_buffer_add_int (&p, &left, offset); | |
9558 | remote_buffer_add_string (&p, &left, ","); | |
9559 | ||
9560 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9561 | get_remote_packet_size () - (p - rs->buf)); | |
9562 | ||
9563 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9564 | remote_errno, NULL, NULL); | |
9565 | } | |
9566 | ||
9567 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9568 | Return the number of bytes read, or -1 if an error occurs (and | |
9569 | set *REMOTE_ERRNO). */ | |
9570 | ||
9571 | static int | |
9572 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9573 | ULONGEST offset, int *remote_errno) | |
9574 | { | |
9575 | struct remote_state *rs = get_remote_state (); | |
9576 | char *p = rs->buf; | |
9577 | char *attachment; | |
9578 | int left = get_remote_packet_size (); | |
9579 | int ret, attachment_len; | |
9580 | int read_len; | |
9581 | ||
9582 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9583 | ||
9584 | remote_buffer_add_int (&p, &left, fd); | |
9585 | remote_buffer_add_string (&p, &left, ","); | |
9586 | ||
9587 | remote_buffer_add_int (&p, &left, len); | |
9588 | remote_buffer_add_string (&p, &left, ","); | |
9589 | ||
9590 | remote_buffer_add_int (&p, &left, offset); | |
9591 | ||
9592 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9593 | remote_errno, &attachment, | |
9594 | &attachment_len); | |
9595 | ||
9596 | if (ret < 0) | |
9597 | return ret; | |
9598 | ||
9599 | read_len = remote_unescape_input (attachment, attachment_len, | |
9600 | read_buf, len); | |
9601 | if (read_len != ret) | |
9602 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9603 | ||
9604 | return ret; | |
9605 | } | |
9606 | ||
9607 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9608 | (and set *REMOTE_ERRNO). */ | |
9609 | ||
9610 | static int | |
9611 | remote_hostio_close (int fd, int *remote_errno) | |
9612 | { | |
9613 | struct remote_state *rs = get_remote_state (); | |
9614 | char *p = rs->buf; | |
9615 | int left = get_remote_packet_size () - 1; | |
9616 | ||
9617 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9618 | ||
9619 | remote_buffer_add_int (&p, &left, fd); | |
9620 | ||
9621 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9622 | remote_errno, NULL, NULL); | |
9623 | } | |
9624 | ||
9625 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9626 | occurs (and set *REMOTE_ERRNO). */ | |
9627 | ||
9628 | static int | |
9629 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9630 | { | |
9631 | struct remote_state *rs = get_remote_state (); | |
9632 | char *p = rs->buf; | |
9633 | int left = get_remote_packet_size () - 1; | |
9634 | ||
9635 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9636 | ||
9637 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9638 | strlen (filename)); | |
9639 | ||
9640 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9641 | remote_errno, NULL, NULL); | |
9642 | } | |
9643 | ||
b9e7b9c3 UW |
9644 | /* Read value of symbolic link FILENAME on the remote target. Return |
9645 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9646 | occurs (and set *REMOTE_ERRNO). */ | |
9647 | ||
9648 | static char * | |
9649 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9650 | { | |
9651 | struct remote_state *rs = get_remote_state (); | |
9652 | char *p = rs->buf; | |
9653 | char *attachment; | |
9654 | int left = get_remote_packet_size (); | |
9655 | int len, attachment_len; | |
9656 | int read_len; | |
9657 | char *ret; | |
9658 | ||
9659 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9660 | ||
9661 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9662 | strlen (filename)); | |
9663 | ||
9664 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9665 | remote_errno, &attachment, | |
9666 | &attachment_len); | |
9667 | ||
9668 | if (len < 0) | |
9669 | return NULL; | |
9670 | ||
9671 | ret = xmalloc (len + 1); | |
9672 | ||
9673 | read_len = remote_unescape_input (attachment, attachment_len, | |
9674 | ret, len); | |
9675 | if (read_len != len) | |
9676 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9677 | ||
9678 | ret[len] = '\0'; | |
9679 | return ret; | |
9680 | } | |
9681 | ||
a6b151f1 DJ |
9682 | static int |
9683 | remote_fileio_errno_to_host (int errnum) | |
9684 | { | |
9685 | switch (errnum) | |
9686 | { | |
9687 | case FILEIO_EPERM: | |
9688 | return EPERM; | |
9689 | case FILEIO_ENOENT: | |
9690 | return ENOENT; | |
9691 | case FILEIO_EINTR: | |
9692 | return EINTR; | |
9693 | case FILEIO_EIO: | |
9694 | return EIO; | |
9695 | case FILEIO_EBADF: | |
9696 | return EBADF; | |
9697 | case FILEIO_EACCES: | |
9698 | return EACCES; | |
9699 | case FILEIO_EFAULT: | |
9700 | return EFAULT; | |
9701 | case FILEIO_EBUSY: | |
9702 | return EBUSY; | |
9703 | case FILEIO_EEXIST: | |
9704 | return EEXIST; | |
9705 | case FILEIO_ENODEV: | |
9706 | return ENODEV; | |
9707 | case FILEIO_ENOTDIR: | |
9708 | return ENOTDIR; | |
9709 | case FILEIO_EISDIR: | |
9710 | return EISDIR; | |
9711 | case FILEIO_EINVAL: | |
9712 | return EINVAL; | |
9713 | case FILEIO_ENFILE: | |
9714 | return ENFILE; | |
9715 | case FILEIO_EMFILE: | |
9716 | return EMFILE; | |
9717 | case FILEIO_EFBIG: | |
9718 | return EFBIG; | |
9719 | case FILEIO_ENOSPC: | |
9720 | return ENOSPC; | |
9721 | case FILEIO_ESPIPE: | |
9722 | return ESPIPE; | |
9723 | case FILEIO_EROFS: | |
9724 | return EROFS; | |
9725 | case FILEIO_ENOSYS: | |
9726 | return ENOSYS; | |
9727 | case FILEIO_ENAMETOOLONG: | |
9728 | return ENAMETOOLONG; | |
9729 | } | |
9730 | return -1; | |
9731 | } | |
9732 | ||
9733 | static char * | |
9734 | remote_hostio_error (int errnum) | |
9735 | { | |
9736 | int host_error = remote_fileio_errno_to_host (errnum); | |
9737 | ||
9738 | if (host_error == -1) | |
9739 | error (_("Unknown remote I/O error %d"), errnum); | |
9740 | else | |
9741 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9742 | } | |
9743 | ||
a6b151f1 DJ |
9744 | static void |
9745 | remote_hostio_close_cleanup (void *opaque) | |
9746 | { | |
9747 | int fd = *(int *) opaque; | |
9748 | int remote_errno; | |
9749 | ||
9750 | remote_hostio_close (fd, &remote_errno); | |
9751 | } | |
9752 | ||
f1838a98 UW |
9753 | |
9754 | static void * | |
9755 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9756 | { | |
9757 | const char *filename = bfd_get_filename (abfd); | |
9758 | int fd, remote_errno; | |
9759 | int *stream; | |
9760 | ||
9761 | gdb_assert (remote_filename_p (filename)); | |
9762 | ||
9763 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9764 | if (fd == -1) | |
9765 | { | |
9766 | errno = remote_fileio_errno_to_host (remote_errno); | |
9767 | bfd_set_error (bfd_error_system_call); | |
9768 | return NULL; | |
9769 | } | |
9770 | ||
9771 | stream = xmalloc (sizeof (int)); | |
9772 | *stream = fd; | |
9773 | return stream; | |
9774 | } | |
9775 | ||
9776 | static int | |
9777 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9778 | { | |
9779 | int fd = *(int *)stream; | |
9780 | int remote_errno; | |
9781 | ||
9782 | xfree (stream); | |
9783 | ||
9784 | /* Ignore errors on close; these may happen if the remote | |
9785 | connection was already torn down. */ | |
9786 | remote_hostio_close (fd, &remote_errno); | |
9787 | ||
9788 | return 1; | |
9789 | } | |
9790 | ||
9791 | static file_ptr | |
9792 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9793 | file_ptr nbytes, file_ptr offset) | |
9794 | { | |
9795 | int fd = *(int *)stream; | |
9796 | int remote_errno; | |
9797 | file_ptr pos, bytes; | |
9798 | ||
9799 | pos = 0; | |
9800 | while (nbytes > pos) | |
9801 | { | |
9802 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9803 | offset + pos, &remote_errno); | |
9804 | if (bytes == 0) | |
9805 | /* Success, but no bytes, means end-of-file. */ | |
9806 | break; | |
9807 | if (bytes == -1) | |
9808 | { | |
9809 | errno = remote_fileio_errno_to_host (remote_errno); | |
9810 | bfd_set_error (bfd_error_system_call); | |
9811 | return -1; | |
9812 | } | |
9813 | ||
9814 | pos += bytes; | |
9815 | } | |
9816 | ||
9817 | return pos; | |
9818 | } | |
9819 | ||
9820 | static int | |
9821 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9822 | { | |
9823 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9824 | sb->st_size = INT_MAX; | |
9825 | return 0; | |
9826 | } | |
9827 | ||
9828 | int | |
9829 | remote_filename_p (const char *filename) | |
9830 | { | |
9831 | return strncmp (filename, "remote:", 7) == 0; | |
9832 | } | |
9833 | ||
9834 | bfd * | |
9835 | remote_bfd_open (const char *remote_file, const char *target) | |
9836 | { | |
64c31149 TT |
9837 | bfd *abfd = gdb_bfd_openr_iovec (remote_file, target, |
9838 | remote_bfd_iovec_open, NULL, | |
9839 | remote_bfd_iovec_pread, | |
9840 | remote_bfd_iovec_close, | |
9841 | remote_bfd_iovec_stat); | |
9842 | ||
a4453b7e | 9843 | return abfd; |
f1838a98 UW |
9844 | } |
9845 | ||
a6b151f1 DJ |
9846 | void |
9847 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9848 | { | |
9849 | struct cleanup *back_to, *close_cleanup; | |
9850 | int retcode, fd, remote_errno, bytes, io_size; | |
9851 | FILE *file; | |
9852 | gdb_byte *buffer; | |
9853 | int bytes_in_buffer; | |
9854 | int saw_eof; | |
9855 | ULONGEST offset; | |
9856 | ||
9857 | if (!remote_desc) | |
9858 | error (_("command can only be used with remote target")); | |
9859 | ||
9860 | file = fopen (local_file, "rb"); | |
9861 | if (file == NULL) | |
9862 | perror_with_name (local_file); | |
7c8a8b04 | 9863 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9864 | |
9865 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9866 | | FILEIO_O_TRUNC), | |
9867 | 0700, &remote_errno); | |
9868 | if (fd == -1) | |
9869 | remote_hostio_error (remote_errno); | |
9870 | ||
9871 | /* Send up to this many bytes at once. They won't all fit in the | |
9872 | remote packet limit, so we'll transfer slightly fewer. */ | |
9873 | io_size = get_remote_packet_size (); | |
9874 | buffer = xmalloc (io_size); | |
9875 | make_cleanup (xfree, buffer); | |
9876 | ||
9877 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9878 | ||
9879 | bytes_in_buffer = 0; | |
9880 | saw_eof = 0; | |
9881 | offset = 0; | |
9882 | while (bytes_in_buffer || !saw_eof) | |
9883 | { | |
9884 | if (!saw_eof) | |
9885 | { | |
3e43a32a MS |
9886 | bytes = fread (buffer + bytes_in_buffer, 1, |
9887 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9888 | file); |
9889 | if (bytes == 0) | |
9890 | { | |
9891 | if (ferror (file)) | |
9892 | error (_("Error reading %s."), local_file); | |
9893 | else | |
9894 | { | |
9895 | /* EOF. Unless there is something still in the | |
9896 | buffer from the last iteration, we are done. */ | |
9897 | saw_eof = 1; | |
9898 | if (bytes_in_buffer == 0) | |
9899 | break; | |
9900 | } | |
9901 | } | |
9902 | } | |
9903 | else | |
9904 | bytes = 0; | |
9905 | ||
9906 | bytes += bytes_in_buffer; | |
9907 | bytes_in_buffer = 0; | |
9908 | ||
3e43a32a MS |
9909 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9910 | offset, &remote_errno); | |
a6b151f1 DJ |
9911 | |
9912 | if (retcode < 0) | |
9913 | remote_hostio_error (remote_errno); | |
9914 | else if (retcode == 0) | |
9915 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9916 | else if (retcode < bytes) | |
9917 | { | |
9918 | /* Short write. Save the rest of the read data for the next | |
9919 | write. */ | |
9920 | bytes_in_buffer = bytes - retcode; | |
9921 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9922 | } | |
9923 | ||
9924 | offset += retcode; | |
9925 | } | |
9926 | ||
9927 | discard_cleanups (close_cleanup); | |
9928 | if (remote_hostio_close (fd, &remote_errno)) | |
9929 | remote_hostio_error (remote_errno); | |
9930 | ||
9931 | if (from_tty) | |
9932 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9933 | do_cleanups (back_to); | |
9934 | } | |
9935 | ||
9936 | void | |
9937 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9938 | { | |
9939 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9940 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9941 | FILE *file; |
9942 | gdb_byte *buffer; | |
9943 | ULONGEST offset; | |
9944 | ||
9945 | if (!remote_desc) | |
9946 | error (_("command can only be used with remote target")); | |
9947 | ||
9948 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9949 | if (fd == -1) | |
9950 | remote_hostio_error (remote_errno); | |
9951 | ||
9952 | file = fopen (local_file, "wb"); | |
9953 | if (file == NULL) | |
9954 | perror_with_name (local_file); | |
7c8a8b04 | 9955 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9956 | |
9957 | /* Send up to this many bytes at once. They won't all fit in the | |
9958 | remote packet limit, so we'll transfer slightly fewer. */ | |
9959 | io_size = get_remote_packet_size (); | |
9960 | buffer = xmalloc (io_size); | |
9961 | make_cleanup (xfree, buffer); | |
9962 | ||
9963 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9964 | ||
9965 | offset = 0; | |
9966 | while (1) | |
9967 | { | |
9968 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9969 | if (bytes == 0) | |
9970 | /* Success, but no bytes, means end-of-file. */ | |
9971 | break; | |
9972 | if (bytes == -1) | |
9973 | remote_hostio_error (remote_errno); | |
9974 | ||
9975 | offset += bytes; | |
9976 | ||
9977 | bytes = fwrite (buffer, 1, bytes, file); | |
9978 | if (bytes == 0) | |
9979 | perror_with_name (local_file); | |
9980 | } | |
9981 | ||
9982 | discard_cleanups (close_cleanup); | |
9983 | if (remote_hostio_close (fd, &remote_errno)) | |
9984 | remote_hostio_error (remote_errno); | |
9985 | ||
9986 | if (from_tty) | |
9987 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9988 | do_cleanups (back_to); | |
9989 | } | |
9990 | ||
9991 | void | |
9992 | remote_file_delete (const char *remote_file, int from_tty) | |
9993 | { | |
9994 | int retcode, remote_errno; | |
9995 | ||
9996 | if (!remote_desc) | |
9997 | error (_("command can only be used with remote target")); | |
9998 | ||
9999 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
10000 | if (retcode == -1) | |
10001 | remote_hostio_error (remote_errno); | |
10002 | ||
10003 | if (from_tty) | |
10004 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
10005 | } | |
10006 | ||
10007 | static void | |
10008 | remote_put_command (char *args, int from_tty) | |
10009 | { | |
10010 | struct cleanup *back_to; | |
10011 | char **argv; | |
10012 | ||
d1a41061 PP |
10013 | if (args == NULL) |
10014 | error_no_arg (_("file to put")); | |
10015 | ||
10016 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10017 | back_to = make_cleanup_freeargv (argv); |
10018 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10019 | error (_("Invalid parameters to remote put")); | |
10020 | ||
10021 | remote_file_put (argv[0], argv[1], from_tty); | |
10022 | ||
10023 | do_cleanups (back_to); | |
10024 | } | |
10025 | ||
10026 | static void | |
10027 | remote_get_command (char *args, int from_tty) | |
10028 | { | |
10029 | struct cleanup *back_to; | |
10030 | char **argv; | |
10031 | ||
d1a41061 PP |
10032 | if (args == NULL) |
10033 | error_no_arg (_("file to get")); | |
10034 | ||
10035 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10036 | back_to = make_cleanup_freeargv (argv); |
10037 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
10038 | error (_("Invalid parameters to remote get")); | |
10039 | ||
10040 | remote_file_get (argv[0], argv[1], from_tty); | |
10041 | ||
10042 | do_cleanups (back_to); | |
10043 | } | |
10044 | ||
10045 | static void | |
10046 | remote_delete_command (char *args, int from_tty) | |
10047 | { | |
10048 | struct cleanup *back_to; | |
10049 | char **argv; | |
10050 | ||
d1a41061 PP |
10051 | if (args == NULL) |
10052 | error_no_arg (_("file to delete")); | |
10053 | ||
10054 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
10055 | back_to = make_cleanup_freeargv (argv); |
10056 | if (argv[0] == NULL || argv[1] != NULL) | |
10057 | error (_("Invalid parameters to remote delete")); | |
10058 | ||
10059 | remote_file_delete (argv[0], from_tty); | |
10060 | ||
10061 | do_cleanups (back_to); | |
10062 | } | |
10063 | ||
10064 | static void | |
10065 | remote_command (char *args, int from_tty) | |
10066 | { | |
10067 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
10068 | } | |
10069 | ||
b2175913 MS |
10070 | static int |
10071 | remote_can_execute_reverse (void) | |
10072 | { | |
40ab02ce MS |
10073 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
10074 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
10075 | return 1; | |
10076 | else | |
10077 | return 0; | |
b2175913 MS |
10078 | } |
10079 | ||
74531fed PA |
10080 | static int |
10081 | remote_supports_non_stop (void) | |
10082 | { | |
10083 | return 1; | |
10084 | } | |
10085 | ||
03583c20 UW |
10086 | static int |
10087 | remote_supports_disable_randomization (void) | |
10088 | { | |
10089 | /* Only supported in extended mode. */ | |
10090 | return 0; | |
10091 | } | |
10092 | ||
8a305172 PA |
10093 | static int |
10094 | remote_supports_multi_process (void) | |
10095 | { | |
10096 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10097 | |
901f9912 UW |
10098 | /* Only extended-remote handles being attached to multiple |
10099 | processes, even though plain remote can use the multi-process | |
10100 | thread id extensions, so that GDB knows the target process's | |
10101 | PID. */ | |
10102 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
10103 | } |
10104 | ||
70221824 | 10105 | static int |
782b2b07 SS |
10106 | remote_supports_cond_tracepoints (void) |
10107 | { | |
10108 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10109 | |
782b2b07 SS |
10110 | return rs->cond_tracepoints; |
10111 | } | |
10112 | ||
3788aec7 LM |
10113 | static int |
10114 | remote_supports_cond_breakpoints (void) | |
10115 | { | |
10116 | struct remote_state *rs = get_remote_state (); | |
10117 | ||
10118 | return rs->cond_breakpoints; | |
10119 | } | |
10120 | ||
70221824 | 10121 | static int |
7a697b8d SS |
10122 | remote_supports_fast_tracepoints (void) |
10123 | { | |
10124 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 10125 | |
7a697b8d SS |
10126 | return rs->fast_tracepoints; |
10127 | } | |
10128 | ||
0fb4aa4b PA |
10129 | static int |
10130 | remote_supports_static_tracepoints (void) | |
10131 | { | |
10132 | struct remote_state *rs = get_remote_state (); | |
10133 | ||
10134 | return rs->static_tracepoints; | |
10135 | } | |
10136 | ||
1e4d1764 YQ |
10137 | static int |
10138 | remote_supports_install_in_trace (void) | |
10139 | { | |
10140 | struct remote_state *rs = get_remote_state (); | |
10141 | ||
10142 | return rs->install_in_trace; | |
10143 | } | |
10144 | ||
d248b706 KY |
10145 | static int |
10146 | remote_supports_enable_disable_tracepoint (void) | |
10147 | { | |
10148 | struct remote_state *rs = get_remote_state (); | |
10149 | ||
10150 | return rs->enable_disable_tracepoints; | |
10151 | } | |
10152 | ||
3065dfb6 SS |
10153 | static int |
10154 | remote_supports_string_tracing (void) | |
10155 | { | |
10156 | struct remote_state *rs = get_remote_state (); | |
10157 | ||
10158 | return rs->string_tracing; | |
10159 | } | |
10160 | ||
d3ce09f5 SS |
10161 | static int |
10162 | remote_can_run_breakpoint_commands (void) | |
10163 | { | |
10164 | struct remote_state *rs = get_remote_state (); | |
10165 | ||
10166 | return rs->breakpoint_commands; | |
10167 | } | |
10168 | ||
35b1e5cc | 10169 | static void |
ad91cd99 | 10170 | remote_trace_init (void) |
35b1e5cc SS |
10171 | { |
10172 | putpkt ("QTinit"); | |
10173 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 10174 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
10175 | error (_("Target does not support this command.")); |
10176 | } | |
10177 | ||
10178 | static void free_actions_list (char **actions_list); | |
10179 | static void free_actions_list_cleanup_wrapper (void *); | |
10180 | static void | |
10181 | free_actions_list_cleanup_wrapper (void *al) | |
10182 | { | |
10183 | free_actions_list (al); | |
10184 | } | |
10185 | ||
10186 | static void | |
10187 | free_actions_list (char **actions_list) | |
10188 | { | |
10189 | int ndx; | |
10190 | ||
10191 | if (actions_list == 0) | |
10192 | return; | |
10193 | ||
10194 | for (ndx = 0; actions_list[ndx]; ndx++) | |
10195 | xfree (actions_list[ndx]); | |
10196 | ||
10197 | xfree (actions_list); | |
10198 | } | |
10199 | ||
409873ef SS |
10200 | /* Recursive routine to walk through command list including loops, and |
10201 | download packets for each command. */ | |
10202 | ||
10203 | static void | |
10204 | remote_download_command_source (int num, ULONGEST addr, | |
10205 | struct command_line *cmds) | |
10206 | { | |
10207 | struct remote_state *rs = get_remote_state (); | |
10208 | struct command_line *cmd; | |
10209 | ||
10210 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10211 | { | |
0df8b418 | 10212 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10213 | strcpy (rs->buf, "QTDPsrc:"); |
10214 | encode_source_string (num, addr, "cmd", cmd->line, | |
10215 | rs->buf + strlen (rs->buf), | |
10216 | rs->buf_size - strlen (rs->buf)); | |
10217 | putpkt (rs->buf); | |
10218 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10219 | if (strcmp (target_buf, "OK")) | |
10220 | warning (_("Target does not support source download.")); | |
10221 | ||
10222 | if (cmd->control_type == while_control | |
10223 | || cmd->control_type == while_stepping_control) | |
10224 | { | |
10225 | remote_download_command_source (num, addr, *cmd->body_list); | |
10226 | ||
0df8b418 | 10227 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10228 | strcpy (rs->buf, "QTDPsrc:"); |
10229 | encode_source_string (num, addr, "cmd", "end", | |
10230 | rs->buf + strlen (rs->buf), | |
10231 | rs->buf_size - strlen (rs->buf)); | |
10232 | putpkt (rs->buf); | |
10233 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10234 | if (strcmp (target_buf, "OK")) | |
10235 | warning (_("Target does not support source download.")); | |
10236 | } | |
10237 | } | |
10238 | } | |
10239 | ||
35b1e5cc | 10240 | static void |
e8ba3115 | 10241 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10242 | { |
bba74b36 | 10243 | #define BUF_SIZE 2048 |
e8ba3115 | 10244 | |
35b1e5cc | 10245 | CORE_ADDR tpaddr; |
409873ef | 10246 | char addrbuf[40]; |
bba74b36 | 10247 | char buf[BUF_SIZE]; |
35b1e5cc SS |
10248 | char **tdp_actions; |
10249 | char **stepping_actions; | |
10250 | int ndx; | |
10251 | struct cleanup *old_chain = NULL; | |
10252 | struct agent_expr *aexpr; | |
10253 | struct cleanup *aexpr_chain = NULL; | |
10254 | char *pkt; | |
e8ba3115 | 10255 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10256 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10257 | |
e8ba3115 YQ |
10258 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
10259 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
10260 | tdp_actions); | |
10261 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10262 | stepping_actions); | |
10263 | ||
10264 | tpaddr = loc->address; | |
10265 | sprintf_vma (addrbuf, tpaddr); | |
bba74b36 YQ |
10266 | xsnprintf (buf, BUF_SIZE, "QTDP:%x:%s:%c:%lx:%x", b->number, |
10267 | addrbuf, /* address */ | |
10268 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10269 | t->step_count, t->pass_count); | |
e8ba3115 YQ |
10270 | /* Fast tracepoints are mostly handled by the target, but we can |
10271 | tell the target how big of an instruction block should be moved | |
10272 | around. */ | |
10273 | if (b->type == bp_fast_tracepoint) | |
10274 | { | |
10275 | /* Only test for support at download time; we may not know | |
10276 | target capabilities at definition time. */ | |
10277 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10278 | { |
e8ba3115 | 10279 | int isize; |
35b1e5cc | 10280 | |
e8ba3115 YQ |
10281 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
10282 | tpaddr, &isize, NULL)) | |
bba74b36 YQ |
10283 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":F%x", |
10284 | isize); | |
35b1e5cc | 10285 | else |
e8ba3115 YQ |
10286 | /* If it passed validation at definition but fails now, |
10287 | something is very wrong. */ | |
10288 | internal_error (__FILE__, __LINE__, | |
10289 | _("Fast tracepoint not " | |
10290 | "valid during download")); | |
35b1e5cc | 10291 | } |
e8ba3115 YQ |
10292 | else |
10293 | /* Fast tracepoints are functionally identical to regular | |
10294 | tracepoints, so don't take lack of support as a reason to | |
10295 | give up on the trace run. */ | |
10296 | warning (_("Target does not support fast tracepoints, " | |
10297 | "downloading %d as regular tracepoint"), b->number); | |
10298 | } | |
10299 | else if (b->type == bp_static_tracepoint) | |
10300 | { | |
10301 | /* Only test for support at download time; we may not know | |
10302 | target capabilities at definition time. */ | |
10303 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10304 | { |
e8ba3115 | 10305 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10306 | |
e8ba3115 YQ |
10307 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10308 | strcat (buf, ":S"); | |
0fb4aa4b | 10309 | else |
e8ba3115 | 10310 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10311 | } |
e8ba3115 YQ |
10312 | else |
10313 | /* Fast tracepoints are functionally identical to regular | |
10314 | tracepoints, so don't take lack of support as a reason | |
10315 | to give up on the trace run. */ | |
10316 | error (_("Target does not support static tracepoints")); | |
10317 | } | |
10318 | /* If the tracepoint has a conditional, make it into an agent | |
10319 | expression and append to the definition. */ | |
10320 | if (loc->cond) | |
10321 | { | |
10322 | /* Only test support at download time, we may not know target | |
10323 | capabilities at definition time. */ | |
10324 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10325 | { |
e8ba3115 YQ |
10326 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10327 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
bba74b36 YQ |
10328 | xsnprintf (buf + strlen (buf), BUF_SIZE - strlen (buf), ":X%x,", |
10329 | aexpr->len); | |
e8ba3115 YQ |
10330 | pkt = buf + strlen (buf); |
10331 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10332 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10333 | *pkt = '\0'; | |
10334 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10335 | } |
e8ba3115 YQ |
10336 | else |
10337 | warning (_("Target does not support conditional tracepoints, " | |
10338 | "ignoring tp %d cond"), b->number); | |
10339 | } | |
35b1e5cc | 10340 | |
d9b3f62e | 10341 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10342 | strcat (buf, "-"); |
10343 | putpkt (buf); | |
10344 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10345 | if (strcmp (target_buf, "OK")) | |
10346 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10347 | |
e8ba3115 YQ |
10348 | /* do_single_steps (t); */ |
10349 | if (tdp_actions) | |
10350 | { | |
10351 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10352 | { |
e8ba3115 | 10353 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10354 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%c", |
10355 | b->number, addrbuf, /* address */ | |
10356 | tdp_actions[ndx], | |
10357 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10358 | ? '-' : 0)); | |
e8ba3115 YQ |
10359 | putpkt (buf); |
10360 | remote_get_noisy_reply (&target_buf, | |
10361 | &target_buf_size); | |
10362 | if (strcmp (target_buf, "OK")) | |
10363 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10364 | } |
e8ba3115 YQ |
10365 | } |
10366 | if (stepping_actions) | |
10367 | { | |
10368 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10369 | { |
e8ba3115 | 10370 | QUIT; /* Allow user to bail out with ^C. */ |
bba74b36 YQ |
10371 | xsnprintf (buf, BUF_SIZE, "QTDP:-%x:%s:%s%s%s", |
10372 | b->number, addrbuf, /* address */ | |
10373 | ((ndx == 0) ? "S" : ""), | |
10374 | stepping_actions[ndx], | |
10375 | (stepping_actions[ndx + 1] ? "-" : "")); | |
e8ba3115 YQ |
10376 | putpkt (buf); |
10377 | remote_get_noisy_reply (&target_buf, | |
10378 | &target_buf_size); | |
10379 | if (strcmp (target_buf, "OK")) | |
10380 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10381 | } |
e8ba3115 | 10382 | } |
409873ef | 10383 | |
e8ba3115 YQ |
10384 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10385 | == PACKET_ENABLE) | |
10386 | { | |
10387 | if (b->addr_string) | |
409873ef | 10388 | { |
e8ba3115 YQ |
10389 | strcpy (buf, "QTDPsrc:"); |
10390 | encode_source_string (b->number, loc->address, | |
10391 | "at", b->addr_string, buf + strlen (buf), | |
10392 | 2048 - strlen (buf)); | |
409873ef | 10393 | |
e8ba3115 YQ |
10394 | putpkt (buf); |
10395 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10396 | if (strcmp (target_buf, "OK")) | |
10397 | warning (_("Target does not support source download.")); | |
409873ef | 10398 | } |
e8ba3115 YQ |
10399 | if (b->cond_string) |
10400 | { | |
10401 | strcpy (buf, "QTDPsrc:"); | |
10402 | encode_source_string (b->number, loc->address, | |
10403 | "cond", b->cond_string, buf + strlen (buf), | |
10404 | 2048 - strlen (buf)); | |
10405 | putpkt (buf); | |
10406 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10407 | if (strcmp (target_buf, "OK")) | |
10408 | warning (_("Target does not support source download.")); | |
10409 | } | |
10410 | remote_download_command_source (b->number, loc->address, | |
10411 | breakpoint_commands (b)); | |
35b1e5cc | 10412 | } |
e8ba3115 YQ |
10413 | |
10414 | do_cleanups (old_chain); | |
35b1e5cc SS |
10415 | } |
10416 | ||
1e4d1764 YQ |
10417 | static int |
10418 | remote_can_download_tracepoint (void) | |
10419 | { | |
1e51243a PA |
10420 | struct remote_state *rs = get_remote_state (); |
10421 | struct trace_status *ts; | |
10422 | int status; | |
10423 | ||
10424 | /* Don't try to install tracepoints until we've relocated our | |
10425 | symbols, and fetched and merged the target's tracepoint list with | |
10426 | ours. */ | |
10427 | if (rs->starting_up) | |
10428 | return 0; | |
10429 | ||
10430 | ts = current_trace_status (); | |
10431 | status = remote_get_trace_status (ts); | |
1e4d1764 YQ |
10432 | |
10433 | if (status == -1 || !ts->running_known || !ts->running) | |
10434 | return 0; | |
10435 | ||
10436 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10437 | installing tracepoint in trace, we have to return. */ | |
10438 | if (!remote_supports_install_in_trace ()) | |
10439 | return 0; | |
10440 | ||
10441 | return 1; | |
10442 | } | |
10443 | ||
10444 | ||
35b1e5cc SS |
10445 | static void |
10446 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10447 | { | |
10448 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10449 | char *p; |
35b1e5cc | 10450 | |
bba74b36 YQ |
10451 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDV:%x:%s:%x:", |
10452 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), | |
10453 | tsv->builtin); | |
00bf0b85 SS |
10454 | p = rs->buf + strlen (rs->buf); |
10455 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10456 | error (_("Trace state variable name too long for tsv definition packet")); | |
10457 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10458 | *p++ = '\0'; | |
35b1e5cc SS |
10459 | putpkt (rs->buf); |
10460 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10461 | if (*target_buf == '\0') |
10462 | error (_("Target does not support this command.")); | |
10463 | if (strcmp (target_buf, "OK") != 0) | |
10464 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10465 | } |
10466 | ||
d248b706 KY |
10467 | static void |
10468 | remote_enable_tracepoint (struct bp_location *location) | |
10469 | { | |
10470 | struct remote_state *rs = get_remote_state (); | |
10471 | char addr_buf[40]; | |
10472 | ||
10473 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10474 | xsnprintf (rs->buf, get_remote_packet_size (), "QTEnable:%x:%s", |
10475 | location->owner->number, addr_buf); | |
d248b706 KY |
10476 | putpkt (rs->buf); |
10477 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10478 | if (*rs->buf == '\0') | |
10479 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10480 | if (strcmp (rs->buf, "OK") != 0) | |
10481 | error (_("Error on target while enabling tracepoint.")); | |
10482 | } | |
10483 | ||
10484 | static void | |
10485 | remote_disable_tracepoint (struct bp_location *location) | |
10486 | { | |
10487 | struct remote_state *rs = get_remote_state (); | |
10488 | char addr_buf[40]; | |
10489 | ||
10490 | sprintf_vma (addr_buf, location->address); | |
bba74b36 YQ |
10491 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisable:%x:%s", |
10492 | location->owner->number, addr_buf); | |
d248b706 KY |
10493 | putpkt (rs->buf); |
10494 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10495 | if (*rs->buf == '\0') | |
10496 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10497 | if (strcmp (rs->buf, "OK") != 0) | |
10498 | error (_("Error on target while disabling tracepoint.")); | |
10499 | } | |
10500 | ||
35b1e5cc | 10501 | static void |
ad91cd99 | 10502 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10503 | { |
10504 | asection *s; | |
81b9b86e | 10505 | bfd *abfd = NULL; |
35b1e5cc | 10506 | bfd_size_type size; |
608bcef2 | 10507 | bfd_vma vma; |
35b1e5cc | 10508 | int anysecs = 0; |
c2fa21f1 | 10509 | int offset = 0; |
35b1e5cc SS |
10510 | |
10511 | if (!exec_bfd) | |
10512 | return; /* No information to give. */ | |
10513 | ||
10514 | strcpy (target_buf, "QTro"); | |
10515 | for (s = exec_bfd->sections; s; s = s->next) | |
10516 | { | |
10517 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10518 | int sec_length; |
35b1e5cc SS |
10519 | |
10520 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10521 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10522 | (s->flags & SEC_READONLY) == 0) |
10523 | continue; | |
10524 | ||
10525 | anysecs = 1; | |
81b9b86e | 10526 | vma = bfd_get_section_vma (abfd, s); |
35b1e5cc | 10527 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10528 | sprintf_vma (tmp1, vma); |
10529 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10530 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10531 | if (offset + sec_length + 1 > target_buf_size) | |
10532 | { | |
864ac8a7 HZ |
10533 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10534 | != PACKET_ENABLE) | |
10535 | warning (_("\ | |
c2fa21f1 HZ |
10536 | Too many sections for read-only sections definition packet.")); |
10537 | break; | |
10538 | } | |
bba74b36 YQ |
10539 | xsnprintf (target_buf + offset, target_buf_size - offset, ":%s,%s", |
10540 | tmp1, tmp2); | |
c2fa21f1 | 10541 | offset += sec_length; |
35b1e5cc SS |
10542 | } |
10543 | if (anysecs) | |
10544 | { | |
10545 | putpkt (target_buf); | |
10546 | getpkt (&target_buf, &target_buf_size, 0); | |
10547 | } | |
10548 | } | |
10549 | ||
10550 | static void | |
ad91cd99 | 10551 | remote_trace_start (void) |
35b1e5cc SS |
10552 | { |
10553 | putpkt ("QTStart"); | |
10554 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10555 | if (*target_buf == '\0') |
10556 | error (_("Target does not support this command.")); | |
10557 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10558 | error (_("Bogus reply from target: %s"), target_buf); |
10559 | } | |
10560 | ||
10561 | static int | |
00bf0b85 | 10562 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10563 | { |
953b98d1 | 10564 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10565 | char *p = NULL; |
0df8b418 | 10566 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10567 | extern int trace_regblock_size; |
67f41397 | 10568 | volatile struct gdb_exception ex; |
a744cf53 | 10569 | |
00bf0b85 SS |
10570 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10571 | ||
35b1e5cc | 10572 | putpkt ("qTStatus"); |
67f41397 JK |
10573 | |
10574 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10575 | { | |
10576 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10577 | } | |
10578 | if (ex.reason < 0) | |
10579 | { | |
10580 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10581 | return -1; | |
10582 | } | |
00bf0b85 SS |
10583 | |
10584 | /* If the remote target doesn't do tracing, flag it. */ | |
10585 | if (*p == '\0') | |
10586 | return -1; | |
35b1e5cc | 10587 | |
00bf0b85 SS |
10588 | /* We're working with a live target. */ |
10589 | ts->from_file = 0; | |
10590 | ||
00bf0b85 | 10591 | if (*p++ != 'T') |
35b1e5cc SS |
10592 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10593 | ||
84cebc4a YQ |
10594 | /* Function 'parse_trace_status' sets default value of each field of |
10595 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
10596 | parse_trace_status (p, ts); |
10597 | ||
10598 | return ts->running; | |
35b1e5cc SS |
10599 | } |
10600 | ||
70221824 | 10601 | static void |
f196051f SS |
10602 | remote_get_tracepoint_status (struct breakpoint *bp, |
10603 | struct uploaded_tp *utp) | |
10604 | { | |
10605 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10606 | char *reply; |
10607 | struct bp_location *loc; | |
10608 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 10609 | size_t size = get_remote_packet_size (); |
f196051f SS |
10610 | |
10611 | if (tp) | |
10612 | { | |
10613 | tp->base.hit_count = 0; | |
10614 | tp->traceframe_usage = 0; | |
10615 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10616 | { | |
10617 | /* If the tracepoint was never downloaded, don't go asking for | |
10618 | any status. */ | |
10619 | if (tp->number_on_target == 0) | |
10620 | continue; | |
bba74b36 YQ |
10621 | xsnprintf (rs->buf, size, "qTP:%x:%s", tp->number_on_target, |
10622 | phex_nz (loc->address, 0)); | |
f196051f SS |
10623 | putpkt (rs->buf); |
10624 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10625 | if (reply && *reply) | |
10626 | { | |
10627 | if (*reply == 'V') | |
10628 | parse_tracepoint_status (reply + 1, bp, utp); | |
10629 | } | |
10630 | } | |
10631 | } | |
10632 | else if (utp) | |
10633 | { | |
10634 | utp->hit_count = 0; | |
10635 | utp->traceframe_usage = 0; | |
bba74b36 YQ |
10636 | xsnprintf (rs->buf, size, "qTP:%x:%s", utp->number, |
10637 | phex_nz (utp->addr, 0)); | |
f196051f SS |
10638 | putpkt (rs->buf); |
10639 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10640 | if (reply && *reply) | |
10641 | { | |
10642 | if (*reply == 'V') | |
10643 | parse_tracepoint_status (reply + 1, bp, utp); | |
10644 | } | |
10645 | } | |
10646 | } | |
10647 | ||
35b1e5cc | 10648 | static void |
ad91cd99 | 10649 | remote_trace_stop (void) |
35b1e5cc SS |
10650 | { |
10651 | putpkt ("QTStop"); | |
10652 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10653 | if (*target_buf == '\0') |
10654 | error (_("Target does not support this command.")); | |
10655 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10656 | error (_("Bogus reply from target: %s"), target_buf); |
10657 | } | |
10658 | ||
10659 | static int | |
10660 | remote_trace_find (enum trace_find_type type, int num, | |
10661 | ULONGEST addr1, ULONGEST addr2, | |
10662 | int *tpp) | |
10663 | { | |
10664 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 10665 | char *endbuf = rs->buf + get_remote_packet_size (); |
35b1e5cc SS |
10666 | char *p, *reply; |
10667 | int target_frameno = -1, target_tracept = -1; | |
10668 | ||
e6e4e701 PA |
10669 | /* Lookups other than by absolute frame number depend on the current |
10670 | trace selected, so make sure it is correct on the remote end | |
10671 | first. */ | |
10672 | if (type != tfind_number) | |
10673 | set_remote_traceframe (); | |
10674 | ||
35b1e5cc SS |
10675 | p = rs->buf; |
10676 | strcpy (p, "QTFrame:"); | |
10677 | p = strchr (p, '\0'); | |
10678 | switch (type) | |
10679 | { | |
10680 | case tfind_number: | |
bba74b36 | 10681 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
10682 | break; |
10683 | case tfind_pc: | |
bba74b36 | 10684 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10685 | break; |
10686 | case tfind_tp: | |
bba74b36 | 10687 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
10688 | break; |
10689 | case tfind_range: | |
bba74b36 YQ |
10690 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
10691 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10692 | break; |
10693 | case tfind_outside: | |
bba74b36 YQ |
10694 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
10695 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
10696 | break; |
10697 | default: | |
9b20d036 | 10698 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10699 | } |
10700 | ||
10701 | putpkt (rs->buf); | |
10702 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10703 | if (*reply == '\0') |
10704 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10705 | |
10706 | while (reply && *reply) | |
10707 | switch (*reply) | |
10708 | { | |
10709 | case 'F': | |
f197e0f1 VP |
10710 | p = ++reply; |
10711 | target_frameno = (int) strtol (p, &reply, 16); | |
10712 | if (reply == p) | |
10713 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10714 | /* Don't update our remote traceframe number cache on failure |
10715 | to select a remote traceframe. */ | |
f197e0f1 VP |
10716 | if (target_frameno == -1) |
10717 | return -1; | |
35b1e5cc SS |
10718 | break; |
10719 | case 'T': | |
f197e0f1 VP |
10720 | p = ++reply; |
10721 | target_tracept = (int) strtol (p, &reply, 16); | |
10722 | if (reply == p) | |
10723 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10724 | break; |
10725 | case 'O': /* "OK"? */ | |
10726 | if (reply[1] == 'K' && reply[2] == '\0') | |
10727 | reply += 2; | |
10728 | else | |
10729 | error (_("Bogus reply from target: %s"), reply); | |
10730 | break; | |
10731 | default: | |
10732 | error (_("Bogus reply from target: %s"), reply); | |
10733 | } | |
10734 | if (tpp) | |
10735 | *tpp = target_tracept; | |
e6e4e701 PA |
10736 | |
10737 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10738 | return target_frameno; |
10739 | } | |
10740 | ||
10741 | static int | |
10742 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10743 | { | |
10744 | struct remote_state *rs = get_remote_state (); | |
10745 | char *reply; | |
10746 | ULONGEST uval; | |
10747 | ||
e6e4e701 PA |
10748 | set_remote_traceframe (); |
10749 | ||
bba74b36 | 10750 | xsnprintf (rs->buf, get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc SS |
10751 | putpkt (rs->buf); |
10752 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10753 | if (reply && *reply) | |
10754 | { | |
10755 | if (*reply == 'V') | |
10756 | { | |
10757 | unpack_varlen_hex (reply + 1, &uval); | |
10758 | *val = (LONGEST) uval; | |
10759 | return 1; | |
10760 | } | |
10761 | } | |
10762 | return 0; | |
10763 | } | |
10764 | ||
00bf0b85 | 10765 | static int |
011aacb0 | 10766 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10767 | { |
10768 | struct remote_state *rs = get_remote_state (); | |
10769 | char *p, *reply; | |
10770 | ||
10771 | p = rs->buf; | |
10772 | strcpy (p, "QTSave:"); | |
10773 | p += strlen (p); | |
10774 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10775 | error (_("Remote file name too long for trace save packet")); | |
10776 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10777 | *p++ = '\0'; | |
10778 | putpkt (rs->buf); | |
ad91cd99 | 10779 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10780 | if (*reply == '\0') |
ad91cd99 PA |
10781 | error (_("Target does not support this command.")); |
10782 | if (strcmp (reply, "OK") != 0) | |
10783 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10784 | return 0; |
10785 | } | |
10786 | ||
10787 | /* This is basically a memory transfer, but needs to be its own packet | |
10788 | because we don't know how the target actually organizes its trace | |
10789 | memory, plus we want to be able to ask for as much as possible, but | |
10790 | not be unhappy if we don't get as much as we ask for. */ | |
10791 | ||
10792 | static LONGEST | |
10793 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10794 | { | |
10795 | struct remote_state *rs = get_remote_state (); | |
10796 | char *reply; | |
10797 | char *p; | |
10798 | int rslt; | |
10799 | ||
10800 | p = rs->buf; | |
10801 | strcpy (p, "qTBuffer:"); | |
10802 | p += strlen (p); | |
10803 | p += hexnumstr (p, offset); | |
10804 | *p++ = ','; | |
10805 | p += hexnumstr (p, len); | |
10806 | *p++ = '\0'; | |
10807 | ||
10808 | putpkt (rs->buf); | |
10809 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10810 | if (reply && *reply) | |
10811 | { | |
10812 | /* 'l' by itself means we're at the end of the buffer and | |
10813 | there is nothing more to get. */ | |
10814 | if (*reply == 'l') | |
10815 | return 0; | |
10816 | ||
10817 | /* Convert the reply into binary. Limit the number of bytes to | |
10818 | convert according to our passed-in buffer size, rather than | |
10819 | what was returned in the packet; if the target is | |
10820 | unexpectedly generous and gives us a bigger reply than we | |
10821 | asked for, we don't want to crash. */ | |
10822 | rslt = hex2bin (target_buf, buf, len); | |
10823 | return rslt; | |
10824 | } | |
10825 | ||
10826 | /* Something went wrong, flag as an error. */ | |
10827 | return -1; | |
10828 | } | |
10829 | ||
35b1e5cc SS |
10830 | static void |
10831 | remote_set_disconnected_tracing (int val) | |
10832 | { | |
10833 | struct remote_state *rs = get_remote_state (); | |
10834 | ||
33da3f1c SS |
10835 | if (rs->disconnected_tracing) |
10836 | { | |
ad91cd99 PA |
10837 | char *reply; |
10838 | ||
bba74b36 | 10839 | xsnprintf (rs->buf, get_remote_packet_size (), "QTDisconnected:%x", val); |
33da3f1c | 10840 | putpkt (rs->buf); |
ad91cd99 PA |
10841 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10842 | if (*reply == '\0') | |
33da3f1c | 10843 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10844 | if (strcmp (reply, "OK") != 0) |
10845 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10846 | } |
10847 | else if (val) | |
10848 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10849 | } |
10850 | ||
dc146f7c VP |
10851 | static int |
10852 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10853 | { | |
10854 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10855 | |
dc146f7c VP |
10856 | if (info && info->private) |
10857 | return info->private->core; | |
10858 | return -1; | |
10859 | } | |
10860 | ||
4daf5ac0 SS |
10861 | static void |
10862 | remote_set_circular_trace_buffer (int val) | |
10863 | { | |
10864 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10865 | char *reply; |
4daf5ac0 | 10866 | |
bba74b36 | 10867 | xsnprintf (rs->buf, get_remote_packet_size (), "QTBuffer:circular:%x", val); |
4daf5ac0 | 10868 | putpkt (rs->buf); |
ad91cd99 PA |
10869 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10870 | if (*reply == '\0') | |
4daf5ac0 | 10871 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10872 | if (strcmp (reply, "OK") != 0) |
10873 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10874 | } |
10875 | ||
b3b9301e PA |
10876 | static struct traceframe_info * |
10877 | remote_traceframe_info (void) | |
10878 | { | |
10879 | char *text; | |
10880 | ||
10881 | text = target_read_stralloc (¤t_target, | |
10882 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10883 | if (text != NULL) | |
10884 | { | |
10885 | struct traceframe_info *info; | |
10886 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10887 | ||
10888 | info = parse_traceframe_info (text); | |
10889 | do_cleanups (back_to); | |
10890 | return info; | |
10891 | } | |
10892 | ||
10893 | return NULL; | |
10894 | } | |
10895 | ||
405f8e94 SS |
10896 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10897 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10898 | if the packet is not supported, and 0 if the minimum instruction | |
10899 | length is unknown. */ | |
10900 | ||
10901 | static int | |
10902 | remote_get_min_fast_tracepoint_insn_len (void) | |
10903 | { | |
10904 | struct remote_state *rs = get_remote_state (); | |
10905 | char *reply; | |
10906 | ||
e886a173 PA |
10907 | /* If we're not debugging a process yet, the IPA can't be |
10908 | loaded. */ | |
10909 | if (!target_has_execution) | |
10910 | return 0; | |
10911 | ||
10912 | /* Make sure the remote is pointing at the right process. */ | |
10913 | set_general_process (); | |
10914 | ||
bba74b36 | 10915 | xsnprintf (rs->buf, get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 SS |
10916 | putpkt (rs->buf); |
10917 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10918 | if (*reply == '\0') | |
10919 | return -1; | |
10920 | else | |
10921 | { | |
10922 | ULONGEST min_insn_len; | |
10923 | ||
10924 | unpack_varlen_hex (reply, &min_insn_len); | |
10925 | ||
10926 | return (int) min_insn_len; | |
10927 | } | |
10928 | } | |
10929 | ||
f196051f SS |
10930 | static int |
10931 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10932 | { | |
10933 | struct remote_state *rs = get_remote_state (); | |
10934 | char *reply; | |
10935 | char *buf = rs->buf; | |
10936 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10937 | int nbytes; | |
10938 | ||
10939 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10940 | if (user) | |
10941 | { | |
10942 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10943 | nbytes = bin2hex (user, buf, 0); | |
10944 | buf += 2 * nbytes; | |
10945 | *buf++ = ';'; | |
10946 | } | |
10947 | if (notes) | |
10948 | { | |
10949 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10950 | nbytes = bin2hex (notes, buf, 0); | |
10951 | buf += 2 * nbytes; | |
10952 | *buf++ = ';'; | |
10953 | } | |
10954 | if (stop_notes) | |
10955 | { | |
10956 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10957 | nbytes = bin2hex (stop_notes, buf, 0); | |
10958 | buf += 2 * nbytes; | |
10959 | *buf++ = ';'; | |
10960 | } | |
10961 | /* Ensure the buffer is terminated. */ | |
10962 | *buf = '\0'; | |
10963 | ||
10964 | putpkt (rs->buf); | |
10965 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10966 | if (*reply == '\0') | |
10967 | return 0; | |
10968 | ||
10969 | if (strcmp (reply, "OK") != 0) | |
10970 | error (_("Bogus reply from target: %s"), reply); | |
10971 | ||
10972 | return 1; | |
10973 | } | |
10974 | ||
d1feda86 YQ |
10975 | static int |
10976 | remote_use_agent (int use) | |
10977 | { | |
10978 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
10979 | { | |
10980 | struct remote_state *rs = get_remote_state (); | |
10981 | ||
10982 | /* If the stub supports QAgent. */ | |
bba74b36 | 10983 | xsnprintf (rs->buf, get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 YQ |
10984 | putpkt (rs->buf); |
10985 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10986 | ||
10987 | if (strcmp (rs->buf, "OK") == 0) | |
10988 | { | |
10989 | use_agent = use; | |
10990 | return 1; | |
10991 | } | |
10992 | } | |
10993 | ||
10994 | return 0; | |
10995 | } | |
10996 | ||
10997 | static int | |
10998 | remote_can_use_agent (void) | |
10999 | { | |
11000 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
11001 | } | |
11002 | ||
c906108c | 11003 | static void |
fba45db2 | 11004 | init_remote_ops (void) |
c906108c | 11005 | { |
c5aa993b | 11006 | remote_ops.to_shortname = "remote"; |
c906108c | 11007 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 11008 | remote_ops.to_doc = |
c906108c | 11009 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
11010 | Specify the serial device it is connected to\n\ |
11011 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
11012 | remote_ops.to_open = remote_open; |
11013 | remote_ops.to_close = remote_close; | |
c906108c | 11014 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 11015 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 11016 | remote_ops.to_resume = remote_resume; |
c906108c SS |
11017 | remote_ops.to_wait = remote_wait; |
11018 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
11019 | remote_ops.to_store_registers = remote_store_registers; | |
11020 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 11021 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 11022 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
11023 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
11024 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
11025 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
11026 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
11027 | remote_ops.to_watchpoint_addr_within_range = |
11028 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
11029 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
11030 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
11031 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
11032 | remote_ops.to_region_ok_for_hw_watchpoint |
11033 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
11034 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
11035 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
11036 | remote_ops.to_kill = remote_kill; |
11037 | remote_ops.to_load = generic_load; | |
c906108c | 11038 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 11039 | remote_ops.to_pass_signals = remote_pass_signals; |
9b224c5e | 11040 | remote_ops.to_program_signals = remote_program_signals; |
c906108c | 11041 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 11042 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 11043 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 11044 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 11045 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 11046 | remote_ops.to_stop = remote_stop; |
4b8a223f | 11047 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 11048 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 11049 | remote_ops.to_log_command = serial_log_command; |
38691318 | 11050 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 11051 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
11052 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
11053 | remote_ops.to_has_memory = default_child_has_memory; | |
11054 | remote_ops.to_has_stack = default_child_has_stack; | |
11055 | remote_ops.to_has_registers = default_child_has_registers; | |
11056 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 11057 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 11058 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 11059 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 11060 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
11061 | remote_ops.to_flash_erase = remote_flash_erase; |
11062 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 11063 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 11064 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
11065 | remote_ops.to_can_async_p = remote_can_async_p; |
11066 | remote_ops.to_is_async_p = remote_is_async_p; | |
11067 | remote_ops.to_async = remote_async; | |
75c99385 PA |
11068 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
11069 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 11070 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 11071 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
11072 | remote_ops.to_supports_disable_randomization |
11073 | = remote_supports_disable_randomization; | |
7313baad UW |
11074 | remote_ops.to_fileio_open = remote_hostio_open; |
11075 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
11076 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
11077 | remote_ops.to_fileio_close = remote_hostio_close; | |
11078 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 11079 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 11080 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 11081 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 11082 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
d3ce09f5 | 11083 | remote_ops.to_can_run_breakpoint_commands = remote_can_run_breakpoint_commands; |
35b1e5cc SS |
11084 | remote_ops.to_trace_init = remote_trace_init; |
11085 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 11086 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
11087 | remote_ops.to_download_trace_state_variable |
11088 | = remote_download_trace_state_variable; | |
d248b706 KY |
11089 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
11090 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
11091 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
11092 | remote_ops.to_trace_start = remote_trace_start; | |
11093 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 11094 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
11095 | remote_ops.to_trace_stop = remote_trace_stop; |
11096 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
11097 | remote_ops.to_get_trace_state_variable_value |
11098 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
11099 | remote_ops.to_save_trace_data = remote_save_trace_data; |
11100 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
11101 | remote_ops.to_upload_trace_state_variables |
11102 | = remote_upload_trace_state_variables; | |
00bf0b85 | 11103 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 11104 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 11105 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 11106 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 11107 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 11108 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 11109 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 11110 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 11111 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
11112 | remote_ops.to_static_tracepoint_marker_at |
11113 | = remote_static_tracepoint_marker_at; | |
11114 | remote_ops.to_static_tracepoint_markers_by_strid | |
11115 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 11116 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
11117 | remote_ops.to_use_agent = remote_use_agent; |
11118 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
c906108c SS |
11119 | } |
11120 | ||
11121 | /* Set up the extended remote vector by making a copy of the standard | |
11122 | remote vector and adding to it. */ | |
11123 | ||
11124 | static void | |
fba45db2 | 11125 | init_extended_remote_ops (void) |
c906108c SS |
11126 | { |
11127 | extended_remote_ops = remote_ops; | |
11128 | ||
0f71a2f6 | 11129 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 11130 | extended_remote_ops.to_longname = |
c906108c | 11131 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 11132 | extended_remote_ops.to_doc = |
c906108c | 11133 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
11134 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
11135 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
11136 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
11137 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
11138 | extended_remote_ops.to_detach = extended_remote_detach; |
11139 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 11140 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
11141 | extended_remote_ops.to_supports_disable_randomization |
11142 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
11143 | } |
11144 | ||
6426a772 JM |
11145 | static int |
11146 | remote_can_async_p (void) | |
11147 | { | |
c6ebd6cf | 11148 | if (!target_async_permitted) |
75c99385 PA |
11149 | /* We only enable async when the user specifically asks for it. */ |
11150 | return 0; | |
11151 | ||
23860348 | 11152 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11153 | return serial_can_async_p (remote_desc); |
6426a772 JM |
11154 | } |
11155 | ||
11156 | static int | |
11157 | remote_is_async_p (void) | |
11158 | { | |
c6ebd6cf | 11159 | if (!target_async_permitted) |
75c99385 PA |
11160 | /* We only enable async when the user specifically asks for it. */ |
11161 | return 0; | |
11162 | ||
23860348 | 11163 | /* We're async whenever the serial device is. */ |
3dd5b83d | 11164 | return serial_is_async_p (remote_desc); |
6426a772 JM |
11165 | } |
11166 | ||
2acceee2 JM |
11167 | /* Pass the SERIAL event on and up to the client. One day this code |
11168 | will be able to delay notifying the client of an event until the | |
23860348 | 11169 | point where an entire packet has been received. */ |
2acceee2 | 11170 | |
2bc416ba | 11171 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 11172 | void *context); |
2acceee2 JM |
11173 | static void *async_client_context; |
11174 | static serial_event_ftype remote_async_serial_handler; | |
11175 | ||
6426a772 | 11176 | static void |
819cc324 | 11177 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 11178 | { |
2acceee2 JM |
11179 | /* Don't propogate error information up to the client. Instead let |
11180 | the client find out about the error by querying the target. */ | |
11181 | async_client_callback (INF_REG_EVENT, async_client_context); | |
11182 | } | |
11183 | ||
74531fed PA |
11184 | static void |
11185 | remote_async_inferior_event_handler (gdb_client_data data) | |
11186 | { | |
11187 | inferior_event_handler (INF_REG_EVENT, NULL); | |
11188 | } | |
11189 | ||
11190 | static void | |
11191 | remote_async_get_pending_events_handler (gdb_client_data data) | |
11192 | { | |
11193 | remote_get_pending_stop_replies (); | |
11194 | } | |
11195 | ||
2acceee2 | 11196 | static void |
2bc416ba | 11197 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 11198 | void *context), void *context) |
2acceee2 JM |
11199 | { |
11200 | if (callback != NULL) | |
11201 | { | |
2cd58942 | 11202 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
11203 | async_client_callback = callback; |
11204 | async_client_context = context; | |
11205 | } | |
11206 | else | |
2cd58942 | 11207 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
11208 | } |
11209 | ||
5a2468f5 | 11210 | static void |
c2d11a7d | 11211 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 11212 | { |
427c3a89 | 11213 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
11214 | } |
11215 | ||
d471ea57 AC |
11216 | static void |
11217 | show_remote_cmd (char *args, int from_tty) | |
11218 | { | |
37a105a1 | 11219 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11220 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11221 | struct cleanup *showlist_chain; |
11222 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11223 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11224 | |
11225 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11226 | for (; list != NULL; list = list->next) | |
11227 | if (strcmp (list->name, "Z-packet") == 0) | |
11228 | continue; | |
427c3a89 DJ |
11229 | else if (list->type == not_set_cmd) |
11230 | /* Alias commands are exactly like the original, except they | |
11231 | don't have the normal type. */ | |
11232 | continue; | |
11233 | else | |
37a105a1 DJ |
11234 | { |
11235 | struct cleanup *option_chain | |
11236 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11237 | |
37a105a1 DJ |
11238 | ui_out_field_string (uiout, "name", list->name); |
11239 | ui_out_text (uiout, ": "); | |
427c3a89 | 11240 | if (list->type == show_cmd) |
5b9afe8a | 11241 | do_show_command ((char *) NULL, from_tty, list); |
427c3a89 DJ |
11242 | else |
11243 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11244 | /* Close the tuple. */ |
11245 | do_cleanups (option_chain); | |
11246 | } | |
427c3a89 DJ |
11247 | |
11248 | /* Close the tuple. */ | |
11249 | do_cleanups (showlist_chain); | |
d471ea57 | 11250 | } |
5a2468f5 | 11251 | |
0f71a2f6 | 11252 | |
23860348 | 11253 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11254 | static void |
11255 | remote_new_objfile (struct objfile *objfile) | |
11256 | { | |
23860348 | 11257 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 11258 | remote_check_symbols (objfile); |
dc8acb97 MS |
11259 | } |
11260 | ||
00bf0b85 SS |
11261 | /* Pull all the tracepoints defined on the target and create local |
11262 | data structures representing them. We don't want to create real | |
11263 | tracepoints yet, we don't want to mess up the user's existing | |
11264 | collection. */ | |
11265 | ||
11266 | static int | |
11267 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11268 | { |
00bf0b85 SS |
11269 | struct remote_state *rs = get_remote_state (); |
11270 | char *p; | |
d5551862 | 11271 | |
00bf0b85 SS |
11272 | /* Ask for a first packet of tracepoint definition. */ |
11273 | putpkt ("qTfP"); | |
11274 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11275 | p = rs->buf; | |
11276 | while (*p && *p != 'l') | |
d5551862 | 11277 | { |
00bf0b85 SS |
11278 | parse_tracepoint_definition (p, utpp); |
11279 | /* Ask for another packet of tracepoint definition. */ | |
11280 | putpkt ("qTsP"); | |
11281 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11282 | p = rs->buf; | |
d5551862 | 11283 | } |
00bf0b85 | 11284 | return 0; |
d5551862 SS |
11285 | } |
11286 | ||
00bf0b85 SS |
11287 | static int |
11288 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11289 | { |
00bf0b85 | 11290 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11291 | char *p; |
d5551862 | 11292 | |
00bf0b85 SS |
11293 | /* Ask for a first packet of variable definition. */ |
11294 | putpkt ("qTfV"); | |
d5551862 SS |
11295 | getpkt (&rs->buf, &rs->buf_size, 0); |
11296 | p = rs->buf; | |
00bf0b85 | 11297 | while (*p && *p != 'l') |
d5551862 | 11298 | { |
00bf0b85 SS |
11299 | parse_tsv_definition (p, utsvp); |
11300 | /* Ask for another packet of variable definition. */ | |
11301 | putpkt ("qTsV"); | |
d5551862 SS |
11302 | getpkt (&rs->buf, &rs->buf_size, 0); |
11303 | p = rs->buf; | |
11304 | } | |
00bf0b85 | 11305 | return 0; |
d5551862 SS |
11306 | } |
11307 | ||
c906108c | 11308 | void |
fba45db2 | 11309 | _initialize_remote (void) |
c906108c | 11310 | { |
ea9c271d | 11311 | struct remote_state *rs; |
9a7071a8 JB |
11312 | struct cmd_list_element *cmd; |
11313 | char *cmd_name; | |
ea9c271d | 11314 | |
0f71a2f6 | 11315 | /* architecture specific data */ |
2bc416ba | 11316 | remote_gdbarch_data_handle = |
23860348 | 11317 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11318 | remote_g_packet_data_handle = |
11319 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11320 | |
ea9c271d DJ |
11321 | /* Initialize the per-target state. At the moment there is only one |
11322 | of these, not one per target. Only one target is active at a | |
11323 | time. The default buffer size is unimportant; it will be expanded | |
11324 | whenever a larger buffer is needed. */ | |
0b83947e | 11325 | rs = get_remote_state_raw (); |
ea9c271d DJ |
11326 | rs->buf_size = 400; |
11327 | rs->buf = xmalloc (rs->buf_size); | |
11328 | ||
c906108c SS |
11329 | init_remote_ops (); |
11330 | add_target (&remote_ops); | |
11331 | ||
11332 | init_extended_remote_ops (); | |
11333 | add_target (&extended_remote_ops); | |
cce74817 | 11334 | |
dc8acb97 | 11335 | /* Hook into new objfile notification. */ |
06d3b283 | 11336 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 11337 | |
b803fb0f DJ |
11338 | /* Set up signal handlers. */ |
11339 | sigint_remote_token = | |
11340 | create_async_signal_handler (async_remote_interrupt, NULL); | |
11341 | sigint_remote_twice_token = | |
6d549500 | 11342 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11343 | |
c906108c SS |
11344 | #if 0 |
11345 | init_remote_threadtests (); | |
11346 | #endif | |
11347 | ||
23860348 | 11348 | /* set/show remote ... */ |
d471ea57 | 11349 | |
1bedd215 | 11350 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11351 | Remote protocol specific variables\n\ |
11352 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11353 | the packets being used"), |
cff3e48b | 11354 | &remote_set_cmdlist, "set remote ", |
23860348 | 11355 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11356 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11357 | Remote protocol specific variables\n\ |
11358 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11359 | the packets being used"), |
cff3e48b | 11360 | &remote_show_cmdlist, "show remote ", |
23860348 | 11361 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11362 | |
1a966eab AC |
11363 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11364 | Compare section data on target to the exec file.\n\ | |
11365 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11366 | &cmdlist); |
11367 | ||
1a966eab AC |
11368 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11369 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11370 | maintenance packet TEXT\n\ |
11371 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11372 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11373 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11374 | terminating `#' character and checksum."), |
c906108c SS |
11375 | &maintenancelist); |
11376 | ||
7915a72c AC |
11377 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11378 | Set whether to send break if interrupted."), _("\ | |
11379 | Show whether to send break if interrupted."), _("\ | |
11380 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11381 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11382 | &setlist, &showlist); |
9a7071a8 JB |
11383 | cmd_name = "remotebreak"; |
11384 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11385 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11386 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11387 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11388 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11389 | ||
11390 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11391 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11392 | _("\ | |
9a7071a8 JB |
11393 | Set interrupt sequence to remote target."), _("\ |
11394 | Show interrupt sequence to remote target."), _("\ | |
11395 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11396 | NULL, show_interrupt_sequence, | |
11397 | &remote_set_cmdlist, | |
11398 | &remote_show_cmdlist); | |
11399 | ||
11400 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11401 | &interrupt_on_connect, _("\ | |
11402 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11403 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11404 | If set, interrupt sequence is sent to remote target."), | |
11405 | NULL, NULL, | |
11406 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11407 | |
23860348 | 11408 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11409 | |
1a966eab AC |
11410 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11411 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11412 | &setlist); |
1a966eab AC |
11413 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11414 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11415 | &showlist); |
11416 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11417 | set_memory_write_packet_size, _("\ |
11418 | Set the maximum number of bytes per memory-write packet.\n\ | |
11419 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11420 | default packet size. The actual limit is further reduced\n\ | |
11421 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11422 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11423 | &remote_set_cmdlist); |
11424 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11425 | set_memory_read_packet_size, _("\ |
11426 | Set the maximum number of bytes per memory-read packet.\n\ | |
11427 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11428 | default packet size. The actual limit is further reduced\n\ | |
11429 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11430 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11431 | &remote_set_cmdlist); |
11432 | add_cmd ("memory-write-packet-size", no_class, | |
11433 | show_memory_write_packet_size, | |
1a966eab | 11434 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11435 | &remote_show_cmdlist); |
11436 | add_cmd ("memory-read-packet-size", no_class, | |
11437 | show_memory_read_packet_size, | |
1a966eab | 11438 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11439 | &remote_show_cmdlist); |
c906108c | 11440 | |
b3f42336 | 11441 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11442 | &remote_hw_watchpoint_limit, _("\ |
11443 | Set the maximum number of target hardware watchpoints."), _("\ | |
11444 | Show the maximum number of target hardware watchpoints."), _("\ | |
11445 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11446 | NULL, NULL, /* FIXME: i18n: The maximum |
11447 | number of target hardware | |
11448 | watchpoints is %s. */ | |
b3f42336 | 11449 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11450 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11451 | &remote_hw_watchpoint_length_limit, _("\ | |
11452 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11453 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11454 | Specify a negative limit for unlimited."), | |
11455 | NULL, NULL, /* FIXME: i18n: The maximum | |
11456 | length (in bytes) of a target | |
11457 | hardware watchpoint is %s. */ | |
11458 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11459 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11460 | &remote_hw_breakpoint_limit, _("\ |
11461 | Set the maximum number of target hardware breakpoints."), _("\ | |
11462 | Show the maximum number of target hardware breakpoints."), _("\ | |
11463 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11464 | NULL, NULL, /* FIXME: i18n: The maximum |
11465 | number of target hardware | |
11466 | breakpoints is %s. */ | |
b3f42336 | 11467 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11468 | |
883b9c6c YQ |
11469 | add_setshow_uinteger_cmd ("remoteaddresssize", class_obscure, |
11470 | &remote_address_size, _("\ | |
4d28ad1e AC |
11471 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
11472 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
883b9c6c YQ |
11473 | NULL, |
11474 | NULL, /* FIXME: i18n: */ | |
11475 | &setlist, &showlist); | |
c906108c | 11476 | |
444abaca | 11477 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11478 | "X", "binary-download", 1); |
0f71a2f6 | 11479 | |
444abaca | 11480 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11481 | "vCont", "verbose-resume", 0); |
506fb367 | 11482 | |
89be2091 DJ |
11483 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11484 | "QPassSignals", "pass-signals", 0); | |
11485 | ||
9b224c5e PA |
11486 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
11487 | "QProgramSignals", "program-signals", 0); | |
11488 | ||
444abaca | 11489 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11490 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11491 | |
444abaca | 11492 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11493 | "P", "set-register", 1); |
d471ea57 | 11494 | |
444abaca | 11495 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11496 | "p", "fetch-register", 1); |
b96ec7ac | 11497 | |
444abaca | 11498 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11499 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11500 | |
444abaca | 11501 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11502 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11503 | |
444abaca | 11504 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11505 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11506 | |
444abaca | 11507 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11508 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11509 | |
444abaca | 11510 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11511 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11512 | |
0876f84a DJ |
11513 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11514 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11515 | |
23181151 DJ |
11516 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11517 | "qXfer:features:read", "target-features", 0); | |
11518 | ||
cfa9d6d9 DJ |
11519 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11520 | "qXfer:libraries:read", "library-info", 0); | |
11521 | ||
2268b414 JK |
11522 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11523 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11524 | ||
fd79ecee DJ |
11525 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11526 | "qXfer:memory-map:read", "memory-map", 0); | |
11527 | ||
0e7f50da UW |
11528 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11529 | "qXfer:spu:read", "read-spu-object", 0); | |
11530 | ||
11531 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11532 | "qXfer:spu:write", "write-spu-object", 0); | |
11533 | ||
07e059b5 VP |
11534 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11535 | "qXfer:osdata:read", "osdata", 0); | |
11536 | ||
dc146f7c VP |
11537 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11538 | "qXfer:threads:read", "threads", 0); | |
11539 | ||
4aa995e1 PA |
11540 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11541 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11542 | ||
11543 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11544 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11545 | ||
b3b9301e PA |
11546 | add_packet_config_cmd |
11547 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11548 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11549 | ||
169081d0 TG |
11550 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11551 | "qXfer:uib:read", "unwind-info-block", 0); | |
11552 | ||
444abaca | 11553 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11554 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11555 | 0); |
11556 | ||
711e434b PM |
11557 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11558 | "qGetTIBAddr", "get-thread-information-block-address", | |
11559 | 0); | |
11560 | ||
40ab02ce MS |
11561 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11562 | "bc", "reverse-continue", 0); | |
11563 | ||
11564 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11565 | "bs", "reverse-step", 0); | |
11566 | ||
be2a5f71 DJ |
11567 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11568 | "qSupported", "supported-packets", 0); | |
11569 | ||
08388c79 DE |
11570 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11571 | "qSearch:memory", "search-memory", 0); | |
11572 | ||
a6b151f1 DJ |
11573 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11574 | "vFile:open", "hostio-open", 0); | |
11575 | ||
11576 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11577 | "vFile:pread", "hostio-pread", 0); | |
11578 | ||
11579 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11580 | "vFile:pwrite", "hostio-pwrite", 0); | |
11581 | ||
11582 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11583 | "vFile:close", "hostio-close", 0); | |
11584 | ||
11585 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11586 | "vFile:unlink", "hostio-unlink", 0); | |
11587 | ||
b9e7b9c3 UW |
11588 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11589 | "vFile:readlink", "hostio-readlink", 0); | |
11590 | ||
2d717e4f DJ |
11591 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11592 | "vAttach", "attach", 0); | |
11593 | ||
11594 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11595 | "vRun", "run", 0); | |
11596 | ||
a6f3e723 SL |
11597 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11598 | "QStartNoAckMode", "noack", 0); | |
11599 | ||
82f73884 PA |
11600 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11601 | "vKill", "kill", 0); | |
11602 | ||
0b16c5cf PA |
11603 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11604 | "qAttached", "query-attached", 0); | |
11605 | ||
782b2b07 | 11606 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11607 | "ConditionalTracepoints", |
11608 | "conditional-tracepoints", 0); | |
3788aec7 LM |
11609 | |
11610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
11611 | "ConditionalBreakpoints", | |
11612 | "conditional-breakpoints", 0); | |
11613 | ||
d3ce09f5 SS |
11614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
11615 | "BreakpointCommands", | |
11616 | "breakpoint-commands", 0); | |
11617 | ||
7a697b8d SS |
11618 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11619 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11620 | |
409873ef SS |
11621 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11622 | "TracepointSource", "TracepointSource", 0); | |
11623 | ||
d914c394 SS |
11624 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11625 | "QAllow", "allow", 0); | |
11626 | ||
0fb4aa4b PA |
11627 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11628 | "StaticTracepoints", "static-tracepoints", 0); | |
11629 | ||
1e4d1764 YQ |
11630 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11631 | "InstallInTrace", "install-in-trace", 0); | |
11632 | ||
0fb4aa4b PA |
11633 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11634 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11635 | ||
78d85199 YQ |
11636 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11637 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11638 | ||
03583c20 UW |
11639 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11640 | "QDisableRandomization", "disable-randomization", 0); | |
11641 | ||
d1feda86 YQ |
11642 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
11643 | "QAgent", "agent", 0); | |
11644 | ||
37a105a1 DJ |
11645 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11646 | Z sub-packet has its own set and show commands, but users may | |
11647 | have sets to this variable in their .gdbinit files (or in their | |
11648 | documentation). */ | |
e9e68a56 | 11649 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11650 | &remote_Z_packet_detect, _("\ |
11651 | Set use of remote protocol `Z' packets"), _("\ | |
11652 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11653 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11654 | packets."), |
e9e68a56 | 11655 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11656 | show_remote_protocol_Z_packet_cmd, |
11657 | /* FIXME: i18n: Use of remote protocol | |
11658 | `Z' packets is %s. */ | |
e9e68a56 | 11659 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11660 | |
a6b151f1 DJ |
11661 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11662 | Manipulate files on the remote system\n\ | |
11663 | Transfer files to and from the remote target system."), | |
11664 | &remote_cmdlist, "remote ", | |
11665 | 0 /* allow-unknown */, &cmdlist); | |
11666 | ||
11667 | add_cmd ("put", class_files, remote_put_command, | |
11668 | _("Copy a local file to the remote system."), | |
11669 | &remote_cmdlist); | |
11670 | ||
11671 | add_cmd ("get", class_files, remote_get_command, | |
11672 | _("Copy a remote file to the local system."), | |
11673 | &remote_cmdlist); | |
11674 | ||
11675 | add_cmd ("delete", class_files, remote_delete_command, | |
11676 | _("Delete a remote file."), | |
11677 | &remote_cmdlist); | |
11678 | ||
2d717e4f DJ |
11679 | remote_exec_file = xstrdup (""); |
11680 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11681 | &remote_exec_file, _("\ | |
11682 | Set the remote pathname for \"run\""), _("\ | |
11683 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11684 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11685 | ||
449092f6 CV |
11686 | /* Eventually initialize fileio. See fileio.c */ |
11687 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11688 | |
11689 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11690 | special ptids with it set to != 0. */ | |
82f73884 PA |
11691 | magic_null_ptid = ptid_build (42000, 1, -1); |
11692 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11693 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11694 | |
11695 | target_buf_size = 2048; | |
11696 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11697 | } |
10760264 | 11698 |