Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1988-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c SS |
22 | #include "defs.h" |
23 | #include "gdb_string.h" | |
24 | #include <ctype.h> | |
25 | #include <fcntl.h> | |
c906108c SS |
26 | #include "inferior.h" |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
60250e8b | 29 | #include "exceptions.h" |
c906108c | 30 | #include "target.h" |
c5aa993b | 31 | /*#include "terminal.h" */ |
c906108c SS |
32 | #include "gdbcmd.h" |
33 | #include "objfiles.h" | |
34 | #include "gdb-stabs.h" | |
35 | #include "gdbthread.h" | |
c2c6d25f | 36 | #include "remote.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
1ff9c3d6 | 39 | #include "gdb_assert.h" |
6867ae3e | 40 | #include "observer.h" |
a77053c2 | 41 | #include "solib.h" |
37a105a1 DJ |
42 | #include "cli/cli-decode.h" |
43 | #include "cli/cli-setshow.h" | |
424163ea | 44 | #include "target-descriptions.h" |
c906108c | 45 | |
7a292a7a | 46 | #include <ctype.h> |
9846de1b | 47 | #include <sys/time.h> |
c906108c | 48 | |
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
6240bebf MS |
56 | #include "gdbcore.h" /* for exec_bfd */ |
57 | ||
449092f6 | 58 | #include "remote-fileio.h" |
a6b151f1 | 59 | #include "gdb/fileio.h" |
3e88cf8d | 60 | #include "gdb_stat.h" |
dc146f7c | 61 | #include "xml-support.h" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
35b1e5cc SS |
65 | #include "tracepoint.h" |
66 | #include "ax.h" | |
67 | #include "ax-gdb.h" | |
d1feda86 | 68 | #include "agent.h" |
35b1e5cc | 69 | |
0df8b418 | 70 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
71 | static char *target_buf; |
72 | static long target_buf_size; | |
35b1e5cc | 73 | |
6765f3e5 DJ |
74 | /* The size to align memory write packets, when practical. The protocol |
75 | does not guarantee any alignment, and gdb will generate short | |
76 | writes and unaligned writes, but even as a best-effort attempt this | |
77 | can improve bulk transfers. For instance, if a write is misaligned | |
78 | relative to the target's data bus, the stub may need to make an extra | |
79 | round trip fetching data from the target. This doesn't make a | |
80 | huge difference, but it's easy to do, so we try to be helpful. | |
81 | ||
82 | The alignment chosen is arbitrary; usually data bus width is | |
83 | important here, not the possibly larger cache line size. */ | |
84 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
85 | ||
23860348 | 86 | /* Prototypes for local functions. */ |
6426a772 JM |
87 | static void cleanup_sigint_signal_handler (void *dummy); |
88 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 89 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
90 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
91 | int forever); | |
6426a772 | 92 | |
a14ed312 KB |
93 | static void handle_remote_sigint (int); |
94 | static void handle_remote_sigint_twice (int); | |
95 | static void async_remote_interrupt (gdb_client_data); | |
96 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 97 | |
a14ed312 | 98 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 99 | |
316f2060 | 100 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_open (char *name, int from_tty); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 105 | |
75c99385 | 106 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 107 | |
a14ed312 | 108 | static void remote_close (int quitting); |
c906108c | 109 | |
136d6dae | 110 | static void remote_mourn (struct target_ops *ops); |
c906108c | 111 | |
a14ed312 | 112 | static void extended_remote_restart (void); |
c906108c | 113 | |
136d6dae | 114 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 115 | |
a14ed312 | 116 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 117 | |
6d820c5c | 118 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 119 | |
a14ed312 | 120 | static int readchar (int timeout); |
c906108c | 121 | |
7d85a9c0 | 122 | static void remote_kill (struct target_ops *ops); |
c906108c | 123 | |
a14ed312 | 124 | static int tohex (int nib); |
c906108c | 125 | |
75c99385 PA |
126 | static int remote_can_async_p (void); |
127 | ||
128 | static int remote_is_async_p (void); | |
129 | ||
130 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
131 | void *context), void *context); | |
132 | ||
136d6dae | 133 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt (int signo); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
79d7f229 PA |
141 | static void set_general_thread (struct ptid ptid); |
142 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
94cc34af | 156 | static void remote_stop (ptid_t); |
c906108c | 157 | |
a14ed312 | 158 | static int ishex (int ch, int *val); |
c906108c | 159 | |
a14ed312 | 160 | static int stubhex (int ch); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
a14ed312 | 168 | static void print_packet (char *); |
c906108c | 169 | |
a14ed312 | 170 | static void compare_sections_command (char *, int); |
c906108c | 171 | |
a14ed312 | 172 | static void packet_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 175 | |
39f77062 | 176 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 177 | |
a14ed312 | 178 | static void remote_find_new_threads (void); |
c906108c | 179 | |
79d7f229 | 180 | static void record_currthread (ptid_t currthread); |
c906108c | 181 | |
30559e10 | 182 | static int fromhex (int a); |
c906108c | 183 | |
00bf0b85 | 184 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 185 | |
00bf0b85 | 186 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 187 | |
a14ed312 | 188 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 189 | |
a14ed312 | 190 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 191 | |
5a2468f5 | 192 | struct packet_config; |
5a2468f5 | 193 | |
a14ed312 | 194 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 195 | |
d471ea57 | 196 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 197 | |
bb572ddd DJ |
198 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
199 | struct cmd_list_element *c); | |
200 | ||
201 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
202 | int from_tty, | |
203 | struct cmd_list_element *c, | |
204 | const char *value); | |
205 | ||
82f73884 PA |
206 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
207 | static ptid_t read_ptid (char *buf, char **obuf); | |
208 | ||
d914c394 SS |
209 | static void remote_set_permissions (void); |
210 | ||
d5551862 | 211 | struct remote_state; |
00bf0b85 | 212 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 213 | |
00bf0b85 SS |
214 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
215 | ||
216 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
217 | ||
c8d104ad PA |
218 | static void remote_query_supported (void); |
219 | ||
220 | static void remote_check_symbols (struct objfile *objfile); | |
221 | ||
a14ed312 | 222 | void _initialize_remote (void); |
c906108c | 223 | |
74531fed PA |
224 | struct stop_reply; |
225 | static struct stop_reply *stop_reply_xmalloc (void); | |
226 | static void stop_reply_xfree (struct stop_reply *); | |
227 | static void do_stop_reply_xfree (void *arg); | |
228 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
229 | static void push_stop_reply (struct stop_reply *); | |
230 | static void remote_get_pending_stop_replies (void); | |
231 | static void discard_pending_stop_replies (int pid); | |
232 | static int peek_stop_reply (ptid_t ptid); | |
233 | ||
234 | static void remote_async_inferior_event_handler (gdb_client_data); | |
235 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
236 | ||
d3fd5342 PA |
237 | static void remote_terminal_ours (void); |
238 | ||
d962ef82 DJ |
239 | static int remote_read_description_p (struct target_ops *target); |
240 | ||
176a6961 | 241 | static void remote_console_output (char *msg); |
dde08ee1 | 242 | |
b775012e LM |
243 | static int remote_supports_cond_breakpoints (void); |
244 | ||
74531fed PA |
245 | /* The non-stop remote protocol provisions for one pending stop reply. |
246 | This is where we keep it until it is acknowledged. */ | |
247 | ||
248 | static struct stop_reply *pending_stop_reply = NULL; | |
249 | ||
a6b151f1 DJ |
250 | /* For "remote". */ |
251 | ||
252 | static struct cmd_list_element *remote_cmdlist; | |
253 | ||
bb572ddd DJ |
254 | /* For "set remote" and "show remote". */ |
255 | ||
256 | static struct cmd_list_element *remote_set_cmdlist; | |
257 | static struct cmd_list_element *remote_show_cmdlist; | |
258 | ||
ea9c271d DJ |
259 | /* Description of the remote protocol state for the currently |
260 | connected target. This is per-target state, and independent of the | |
261 | selected architecture. */ | |
262 | ||
263 | struct remote_state | |
264 | { | |
265 | /* A buffer to use for incoming packets, and its current size. The | |
266 | buffer is grown dynamically for larger incoming packets. | |
267 | Outgoing packets may also be constructed in this buffer. | |
268 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
269 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
270 | packets. */ | |
271 | char *buf; | |
272 | long buf_size; | |
be2a5f71 DJ |
273 | |
274 | /* If we negotiated packet size explicitly (and thus can bypass | |
275 | heuristics for the largest packet size that will not overflow | |
276 | a buffer in the stub), this will be set to that packet size. | |
277 | Otherwise zero, meaning to use the guessed size. */ | |
278 | long explicit_packet_size; | |
2d717e4f DJ |
279 | |
280 | /* remote_wait is normally called when the target is running and | |
281 | waits for a stop reply packet. But sometimes we need to call it | |
282 | when the target is already stopped. We can send a "?" packet | |
283 | and have remote_wait read the response. Or, if we already have | |
284 | the response, we can stash it in BUF and tell remote_wait to | |
285 | skip calling getpkt. This flag is set when BUF contains a | |
286 | stop reply packet and the target is not waiting. */ | |
287 | int cached_wait_status; | |
a6f3e723 SL |
288 | |
289 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
290 | expect acks from each other. The connection is assumed to be | |
291 | reliable. */ | |
292 | int noack_mode; | |
82f73884 PA |
293 | |
294 | /* True if we're connected in extended remote mode. */ | |
295 | int extended; | |
296 | ||
297 | /* True if the stub reported support for multi-process | |
298 | extensions. */ | |
299 | int multi_process_aware; | |
e24a49d8 PA |
300 | |
301 | /* True if we resumed the target and we're waiting for the target to | |
302 | stop. In the mean time, we can't start another command/query. | |
303 | The remote server wouldn't be ready to process it, so we'd | |
304 | timeout waiting for a reply that would never come and eventually | |
305 | we'd close the connection. This can happen in asynchronous mode | |
306 | because we allow GDB commands while the target is running. */ | |
307 | int waiting_for_stop_reply; | |
74531fed PA |
308 | |
309 | /* True if the stub reports support for non-stop mode. */ | |
310 | int non_stop_aware; | |
311 | ||
312 | /* True if the stub reports support for vCont;t. */ | |
313 | int support_vCont_t; | |
782b2b07 SS |
314 | |
315 | /* True if the stub reports support for conditional tracepoints. */ | |
316 | int cond_tracepoints; | |
3a29589a | 317 | |
3788aec7 LM |
318 | /* True if the stub reports support for target-side breakpoint |
319 | conditions. */ | |
320 | int cond_breakpoints; | |
321 | ||
7a697b8d SS |
322 | /* True if the stub reports support for fast tracepoints. */ |
323 | int fast_tracepoints; | |
324 | ||
0fb4aa4b PA |
325 | /* True if the stub reports support for static tracepoints. */ |
326 | int static_tracepoints; | |
327 | ||
1e4d1764 YQ |
328 | /* True if the stub reports support for installing tracepoint while |
329 | tracing. */ | |
330 | int install_in_trace; | |
331 | ||
d5551862 SS |
332 | /* True if the stub can continue running a trace while GDB is |
333 | disconnected. */ | |
334 | int disconnected_tracing; | |
335 | ||
d248b706 KY |
336 | /* True if the stub reports support for enabling and disabling |
337 | tracepoints while a trace experiment is running. */ | |
338 | int enable_disable_tracepoints; | |
339 | ||
3065dfb6 SS |
340 | /* True if the stub can collect strings using tracenz bytecode. */ |
341 | int string_tracing; | |
342 | ||
3a29589a DJ |
343 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
344 | responded to that. */ | |
345 | int ctrlc_pending_p; | |
ea9c271d DJ |
346 | }; |
347 | ||
dc146f7c VP |
348 | /* Private data that we'll store in (struct thread_info)->private. */ |
349 | struct private_thread_info | |
350 | { | |
351 | char *extra; | |
352 | int core; | |
353 | }; | |
354 | ||
355 | static void | |
356 | free_private_thread_info (struct private_thread_info *info) | |
357 | { | |
358 | xfree (info->extra); | |
359 | xfree (info); | |
360 | } | |
361 | ||
82f73884 PA |
362 | /* Returns true if the multi-process extensions are in effect. */ |
363 | static int | |
364 | remote_multi_process_p (struct remote_state *rs) | |
365 | { | |
901f9912 | 366 | return rs->multi_process_aware; |
82f73884 PA |
367 | } |
368 | ||
ea9c271d DJ |
369 | /* This data could be associated with a target, but we do not always |
370 | have access to the current target when we need it, so for now it is | |
371 | static. This will be fine for as long as only one target is in use | |
372 | at a time. */ | |
373 | static struct remote_state remote_state; | |
374 | ||
375 | static struct remote_state * | |
0b83947e | 376 | get_remote_state_raw (void) |
ea9c271d DJ |
377 | { |
378 | return &remote_state; | |
379 | } | |
380 | ||
381 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 382 | |
ad10f812 AC |
383 | struct packet_reg |
384 | { | |
385 | long offset; /* Offset into G packet. */ | |
386 | long regnum; /* GDB's internal register number. */ | |
387 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 388 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 389 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 390 | at present. */ |
1cf3db46 | 391 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 392 | at present. */ |
ad10f812 AC |
393 | }; |
394 | ||
ea9c271d | 395 | struct remote_arch_state |
d01949b6 | 396 | { |
ad10f812 AC |
397 | /* Description of the remote protocol registers. */ |
398 | long sizeof_g_packet; | |
b323314b AC |
399 | |
400 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 401 | (making an array gdbarch_num_regs in size). */ |
b323314b | 402 | struct packet_reg *regs; |
ad10f812 | 403 | |
d01949b6 AC |
404 | /* This is the size (in chars) of the first response to the ``g'' |
405 | packet. It is used as a heuristic when determining the maximum | |
406 | size of memory-read and memory-write packets. A target will | |
407 | typically only reserve a buffer large enough to hold the ``g'' | |
408 | packet. The size does not include packet overhead (headers and | |
23860348 | 409 | trailers). */ |
d01949b6 AC |
410 | long actual_register_packet_size; |
411 | ||
412 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 413 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
414 | long remote_packet_size; |
415 | }; | |
416 | ||
35b1e5cc SS |
417 | long sizeof_pkt = 2000; |
418 | ||
419 | /* Utility: generate error from an incoming stub packet. */ | |
420 | static void | |
421 | trace_error (char *buf) | |
422 | { | |
423 | if (*buf++ != 'E') | |
424 | return; /* not an error msg */ | |
425 | switch (*buf) | |
426 | { | |
427 | case '1': /* malformed packet error */ | |
428 | if (*++buf == '0') /* general case: */ | |
429 | error (_("remote.c: error in outgoing packet.")); | |
430 | else | |
431 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
432 | strtol (buf, NULL, 16)); | |
433 | case '2': | |
434 | error (_("trace API error 0x%s."), ++buf); | |
435 | default: | |
436 | error (_("Target returns error code '%s'."), buf); | |
437 | } | |
438 | } | |
439 | ||
440 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
441 | static char * | |
442 | remote_get_noisy_reply (char **buf_p, | |
443 | long *sizeof_buf) | |
444 | { | |
445 | do /* Loop on reply from remote stub. */ | |
446 | { | |
447 | char *buf; | |
a744cf53 | 448 | |
0df8b418 | 449 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
450 | getpkt (buf_p, sizeof_buf, 0); |
451 | buf = *buf_p; | |
ad91cd99 | 452 | if (buf[0] == 'E') |
35b1e5cc | 453 | trace_error (buf); |
dde08ee1 PA |
454 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
455 | { | |
456 | ULONGEST ul; | |
457 | CORE_ADDR from, to, org_to; | |
458 | char *p, *pp; | |
459 | int adjusted_size = 0; | |
460 | volatile struct gdb_exception ex; | |
461 | ||
462 | p = buf + strlen ("qRelocInsn:"); | |
463 | pp = unpack_varlen_hex (p, &ul); | |
464 | if (*pp != ';') | |
cb91c06a | 465 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
466 | from = ul; |
467 | ||
468 | p = pp + 1; | |
a9cbf802 | 469 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
470 | to = ul; |
471 | ||
472 | org_to = to; | |
473 | ||
474 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
475 | { | |
476 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
477 | } | |
478 | if (ex.reason >= 0) | |
479 | { | |
480 | adjusted_size = to - org_to; | |
481 | ||
482 | sprintf (buf, "qRelocInsn:%x", adjusted_size); | |
483 | putpkt (buf); | |
484 | } | |
485 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
486 | { | |
487 | /* Propagate memory errors silently back to the target. | |
488 | The stub may have limited the range of addresses we | |
489 | can write to, for example. */ | |
490 | putpkt ("E01"); | |
491 | } | |
492 | else | |
493 | { | |
494 | /* Something unexpectedly bad happened. Be verbose so | |
495 | we can tell what, and propagate the error back to the | |
496 | stub, so it doesn't get stuck waiting for a | |
497 | response. */ | |
498 | exception_fprintf (gdb_stderr, ex, | |
499 | _("warning: relocating instruction: ")); | |
500 | putpkt ("E01"); | |
501 | } | |
502 | } | |
ad91cd99 | 503 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
504 | remote_console_output (buf + 1); /* 'O' message from stub */ |
505 | else | |
0df8b418 | 506 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
507 | } |
508 | while (1); | |
509 | } | |
3c3bea1c | 510 | |
d01949b6 AC |
511 | /* Handle for retreving the remote protocol data from gdbarch. */ |
512 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
513 | ||
ea9c271d DJ |
514 | static struct remote_arch_state * |
515 | get_remote_arch_state (void) | |
d01949b6 | 516 | { |
1cf3db46 | 517 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
518 | } |
519 | ||
0b83947e DJ |
520 | /* Fetch the global remote target state. */ |
521 | ||
522 | static struct remote_state * | |
523 | get_remote_state (void) | |
524 | { | |
525 | /* Make sure that the remote architecture state has been | |
526 | initialized, because doing so might reallocate rs->buf. Any | |
527 | function which calls getpkt also needs to be mindful of changes | |
528 | to rs->buf, but this call limits the number of places which run | |
529 | into trouble. */ | |
530 | get_remote_arch_state (); | |
531 | ||
532 | return get_remote_state_raw (); | |
533 | } | |
534 | ||
74ca34ce DJ |
535 | static int |
536 | compare_pnums (const void *lhs_, const void *rhs_) | |
537 | { | |
538 | const struct packet_reg * const *lhs = lhs_; | |
539 | const struct packet_reg * const *rhs = rhs_; | |
540 | ||
541 | if ((*lhs)->pnum < (*rhs)->pnum) | |
542 | return -1; | |
543 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
544 | return 0; | |
545 | else | |
546 | return 1; | |
547 | } | |
548 | ||
c21236dc PA |
549 | static int |
550 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 551 | { |
74ca34ce | 552 | int regnum, num_remote_regs, offset; |
74ca34ce | 553 | struct packet_reg **remote_regs; |
ea9c271d | 554 | |
4a22f64d | 555 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 556 | { |
c21236dc | 557 | struct packet_reg *r = ®s[regnum]; |
baef701f | 558 | |
4a22f64d | 559 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
560 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
561 | r->pnum = -1; | |
562 | else | |
563 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
564 | ||
b323314b | 565 | r->regnum = regnum; |
74ca34ce DJ |
566 | } |
567 | ||
568 | /* Define the g/G packet format as the contents of each register | |
569 | with a remote protocol number, in order of ascending protocol | |
570 | number. */ | |
571 | ||
4a22f64d | 572 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 573 | * sizeof (struct packet_reg *)); |
f57d151a | 574 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 575 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 576 | regnum++) |
c21236dc PA |
577 | if (regs[regnum].pnum != -1) |
578 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 579 | |
74ca34ce DJ |
580 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
581 | compare_pnums); | |
582 | ||
583 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
584 | { | |
585 | remote_regs[regnum]->in_g_packet = 1; | |
586 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 587 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
588 | } |
589 | ||
c21236dc PA |
590 | return offset; |
591 | } | |
592 | ||
593 | /* Given the architecture described by GDBARCH, return the remote | |
594 | protocol register's number and the register's offset in the g/G | |
595 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
596 | If the target does not have a mapping for REGNUM, return false, | |
597 | otherwise, return true. */ | |
598 | ||
599 | int | |
600 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
601 | int *pnum, int *poffset) | |
602 | { | |
603 | int sizeof_g_packet; | |
604 | struct packet_reg *regs; | |
605 | struct cleanup *old_chain; | |
606 | ||
607 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
608 | ||
609 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
610 | old_chain = make_cleanup (xfree, regs); | |
611 | ||
612 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
613 | ||
614 | *pnum = regs[regnum].pnum; | |
615 | *poffset = regs[regnum].offset; | |
616 | ||
617 | do_cleanups (old_chain); | |
618 | ||
619 | return *pnum != -1; | |
620 | } | |
621 | ||
622 | static void * | |
623 | init_remote_state (struct gdbarch *gdbarch) | |
624 | { | |
625 | struct remote_state *rs = get_remote_state_raw (); | |
626 | struct remote_arch_state *rsa; | |
627 | ||
628 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
629 | ||
630 | /* Use the architecture to build a regnum<->pnum table, which will be | |
631 | 1:1 unless a feature set specifies otherwise. */ | |
632 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
633 | gdbarch_num_regs (gdbarch), | |
634 | struct packet_reg); | |
635 | ||
74ca34ce DJ |
636 | /* Record the maximum possible size of the g packet - it may turn out |
637 | to be smaller. */ | |
c21236dc | 638 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 639 | |
0df8b418 | 640 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
641 | remote stubs have a hardwired buffer size of 400 bytes |
642 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
643 | as the maximum packet-size to ensure that the packet and an extra | |
644 | NUL character can always fit in the buffer. This stops GDB | |
645 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
646 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
647 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 648 | |
ea9c271d DJ |
649 | /* This one is filled in when a ``g'' packet is received. */ |
650 | rsa->actual_register_packet_size = 0; | |
651 | ||
652 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
653 | default, adjust the size accordingly. Remember that each byte is |
654 | encoded as two characters. 32 is the overhead for the packet | |
655 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 656 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 657 | little. */ |
ea9c271d DJ |
658 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
659 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 660 | |
ea9c271d DJ |
661 | /* Make sure that the packet buffer is plenty big enough for |
662 | this architecture. */ | |
663 | if (rs->buf_size < rsa->remote_packet_size) | |
664 | { | |
665 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 666 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 667 | } |
6d820c5c | 668 | |
ea9c271d DJ |
669 | return rsa; |
670 | } | |
671 | ||
672 | /* Return the current allowed size of a remote packet. This is | |
673 | inferred from the current architecture, and should be used to | |
674 | limit the length of outgoing packets. */ | |
675 | static long | |
676 | get_remote_packet_size (void) | |
677 | { | |
be2a5f71 | 678 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
679 | struct remote_arch_state *rsa = get_remote_arch_state (); |
680 | ||
be2a5f71 DJ |
681 | if (rs->explicit_packet_size) |
682 | return rs->explicit_packet_size; | |
683 | ||
ea9c271d | 684 | return rsa->remote_packet_size; |
d01949b6 AC |
685 | } |
686 | ||
ad10f812 | 687 | static struct packet_reg * |
ea9c271d | 688 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 689 | { |
1cf3db46 | 690 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
691 | return NULL; |
692 | else | |
ad10f812 | 693 | { |
ea9c271d | 694 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 695 | |
b323314b AC |
696 | gdb_assert (r->regnum == regnum); |
697 | return r; | |
ad10f812 | 698 | } |
ad10f812 AC |
699 | } |
700 | ||
701 | static struct packet_reg * | |
ea9c271d | 702 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 703 | { |
b323314b | 704 | int i; |
a744cf53 | 705 | |
1cf3db46 | 706 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 707 | { |
ea9c271d | 708 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 709 | |
b323314b AC |
710 | if (r->pnum == pnum) |
711 | return r; | |
ad10f812 AC |
712 | } |
713 | return NULL; | |
d01949b6 AC |
714 | } |
715 | ||
3c3bea1c GS |
716 | /* FIXME: graces/2002-08-08: These variables should eventually be |
717 | bound to an instance of the target object (as in gdbarch-tdep()), | |
718 | when such a thing exists. */ | |
719 | ||
720 | /* This is set to the data address of the access causing the target | |
721 | to stop for a watchpoint. */ | |
722 | static CORE_ADDR remote_watch_data_address; | |
723 | ||
94e08568 | 724 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
725 | static int remote_stopped_by_watchpoint_p; |
726 | ||
c906108c SS |
727 | static struct target_ops remote_ops; |
728 | ||
729 | static struct target_ops extended_remote_ops; | |
730 | ||
6426a772 JM |
731 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
732 | ``forever'' still use the normal timeout mechanism. This is | |
733 | currently used by the ASYNC code to guarentee that target reads | |
734 | during the initial connect always time-out. Once getpkt has been | |
735 | modified to return a timeout indication and, in turn | |
736 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 737 | this can go away. */ |
6426a772 JM |
738 | static int wait_forever_enabled_p = 1; |
739 | ||
9a7071a8 JB |
740 | /* Allow the user to specify what sequence to send to the remote |
741 | when he requests a program interruption: Although ^C is usually | |
742 | what remote systems expect (this is the default, here), it is | |
743 | sometimes preferable to send a break. On other systems such | |
744 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
745 | is required in order to interrupt the execution. */ | |
746 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
747 | const char interrupt_sequence_break[] = "BREAK"; | |
748 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 749 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
750 | { |
751 | interrupt_sequence_control_c, | |
752 | interrupt_sequence_break, | |
753 | interrupt_sequence_break_g, | |
754 | NULL | |
755 | }; | |
756 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
757 | ||
758 | static void | |
759 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
760 | struct cmd_list_element *c, | |
761 | const char *value) | |
762 | { | |
763 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
764 | fprintf_filtered (file, | |
765 | _("Send the ASCII ETX character (Ctrl-c) " | |
766 | "to the remote target to interrupt the " | |
767 | "execution of the program.\n")); | |
768 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
769 | fprintf_filtered (file, | |
770 | _("send a break signal to the remote target " | |
771 | "to interrupt the execution of the program.\n")); | |
772 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
773 | fprintf_filtered (file, | |
774 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
775 | "the remote target to interrupt the execution " | |
776 | "of Linux kernel.\n")); | |
777 | else | |
778 | internal_error (__FILE__, __LINE__, | |
779 | _("Invalid value for interrupt_sequence_mode: %s."), | |
780 | interrupt_sequence_mode); | |
781 | } | |
6426a772 | 782 | |
9a7071a8 JB |
783 | /* This boolean variable specifies whether interrupt_sequence is sent |
784 | to the remote target when gdb connects to it. | |
785 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
786 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
787 | static int interrupt_on_connect = 0; | |
c906108c | 788 | |
9a7071a8 JB |
789 | /* This variable is used to implement the "set/show remotebreak" commands. |
790 | Since these commands are now deprecated in favor of "set/show remote | |
791 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
792 | static int remote_break; |
793 | ||
9a7071a8 JB |
794 | static void |
795 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
796 | { | |
797 | if (remote_break) | |
798 | interrupt_sequence_mode = interrupt_sequence_break; | |
799 | else | |
800 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
801 | } | |
802 | ||
803 | static void | |
804 | show_remotebreak (struct ui_file *file, int from_tty, | |
805 | struct cmd_list_element *c, | |
806 | const char *value) | |
807 | { | |
808 | } | |
809 | ||
c906108c SS |
810 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
811 | remote_open knows that we don't have a file open when the program | |
812 | starts. */ | |
819cc324 | 813 | static struct serial *remote_desc = NULL; |
c906108c | 814 | |
c906108c SS |
815 | /* This variable sets the number of bits in an address that are to be |
816 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 817 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
818 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
819 | initial implementation of remote.c restricted the address sent in | |
820 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
821 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
822 | address was never sent. Since fixing this bug may cause a break in | |
823 | some remote targets this variable is principly provided to | |
23860348 | 824 | facilitate backward compatibility. */ |
c906108c SS |
825 | |
826 | static int remote_address_size; | |
827 | ||
75c99385 PA |
828 | /* Temporary to track who currently owns the terminal. See |
829 | remote_terminal_* for more details. */ | |
6426a772 JM |
830 | |
831 | static int remote_async_terminal_ours_p; | |
832 | ||
2d717e4f DJ |
833 | /* The executable file to use for "run" on the remote side. */ |
834 | ||
835 | static char *remote_exec_file = ""; | |
836 | ||
11cf8741 | 837 | \f |
11cf8741 | 838 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
839 | memory read/write packet. MIN (rsa->remote_packet_size, |
840 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 841 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
842 | (speed up transfers). The variables ``preferred_*'' (the user |
843 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 844 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
845 | |
846 | struct memory_packet_config | |
847 | { | |
848 | char *name; | |
849 | long size; | |
850 | int fixed_p; | |
851 | }; | |
852 | ||
853 | /* Compute the current size of a read/write packet. Since this makes | |
854 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
855 | ||
856 | static long | |
857 | get_memory_packet_size (struct memory_packet_config *config) | |
858 | { | |
d01949b6 | 859 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
860 | struct remote_arch_state *rsa = get_remote_arch_state (); |
861 | ||
11cf8741 JM |
862 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
863 | law?) that some hosts don't cope very well with large alloca() | |
864 | calls. Eventually the alloca() code will be replaced by calls to | |
865 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 866 | be lifted or removed. */ |
11cf8741 JM |
867 | #ifndef MAX_REMOTE_PACKET_SIZE |
868 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
869 | #endif | |
3de11b2e | 870 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 871 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 872 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
873 | #endif |
874 | long what_they_get; | |
875 | if (config->fixed_p) | |
876 | { | |
877 | if (config->size <= 0) | |
878 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
879 | else | |
880 | what_they_get = config->size; | |
881 | } | |
882 | else | |
883 | { | |
ea9c271d | 884 | what_they_get = get_remote_packet_size (); |
23860348 | 885 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
886 | if (config->size > 0 |
887 | && what_they_get > config->size) | |
888 | what_they_get = config->size; | |
be2a5f71 DJ |
889 | |
890 | /* Limit it to the size of the targets ``g'' response unless we have | |
891 | permission from the stub to use a larger packet size. */ | |
892 | if (rs->explicit_packet_size == 0 | |
893 | && rsa->actual_register_packet_size > 0 | |
894 | && what_they_get > rsa->actual_register_packet_size) | |
895 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
896 | } |
897 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
898 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
899 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
900 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
901 | |
902 | /* Make sure there is room in the global buffer for this packet | |
903 | (including its trailing NUL byte). */ | |
904 | if (rs->buf_size < what_they_get + 1) | |
905 | { | |
906 | rs->buf_size = 2 * what_they_get; | |
907 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
908 | } | |
909 | ||
11cf8741 JM |
910 | return what_they_get; |
911 | } | |
912 | ||
0df8b418 | 913 | /* Update the size of a read/write packet. If they user wants |
23860348 | 914 | something really big then do a sanity check. */ |
11cf8741 JM |
915 | |
916 | static void | |
917 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
918 | { | |
919 | int fixed_p = config->fixed_p; | |
920 | long size = config->size; | |
a744cf53 | 921 | |
11cf8741 | 922 | if (args == NULL) |
8a3fe4f8 | 923 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
924 | else if (strcmp (args, "hard") == 0 |
925 | || strcmp (args, "fixed") == 0) | |
926 | fixed_p = 1; | |
927 | else if (strcmp (args, "soft") == 0 | |
928 | || strcmp (args, "limit") == 0) | |
929 | fixed_p = 0; | |
930 | else | |
931 | { | |
932 | char *end; | |
a744cf53 | 933 | |
11cf8741 JM |
934 | size = strtoul (args, &end, 0); |
935 | if (args == end) | |
8a3fe4f8 | 936 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
937 | #if 0 |
938 | /* Instead of explicitly capping the size of a packet to | |
939 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
940 | instead allowed to set the size to something arbitrarily | |
23860348 | 941 | large. */ |
11cf8741 | 942 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 943 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
944 | #endif |
945 | } | |
23860348 | 946 | /* Extra checks? */ |
11cf8741 JM |
947 | if (fixed_p && !config->fixed_p) |
948 | { | |
e2e0b3e5 AC |
949 | if (! query (_("The target may not be able to correctly handle a %s\n" |
950 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 951 | config->name, size)) |
8a3fe4f8 | 952 | error (_("Packet size not changed.")); |
11cf8741 | 953 | } |
23860348 | 954 | /* Update the config. */ |
11cf8741 JM |
955 | config->fixed_p = fixed_p; |
956 | config->size = size; | |
957 | } | |
958 | ||
959 | static void | |
960 | show_memory_packet_size (struct memory_packet_config *config) | |
961 | { | |
a3f17187 | 962 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 963 | if (config->fixed_p) |
a3f17187 | 964 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
965 | get_memory_packet_size (config)); |
966 | else | |
a3f17187 | 967 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
968 | get_memory_packet_size (config)); |
969 | } | |
970 | ||
971 | static struct memory_packet_config memory_write_packet_config = | |
972 | { | |
973 | "memory-write-packet-size", | |
974 | }; | |
975 | ||
976 | static void | |
977 | set_memory_write_packet_size (char *args, int from_tty) | |
978 | { | |
979 | set_memory_packet_size (args, &memory_write_packet_config); | |
980 | } | |
981 | ||
982 | static void | |
983 | show_memory_write_packet_size (char *args, int from_tty) | |
984 | { | |
985 | show_memory_packet_size (&memory_write_packet_config); | |
986 | } | |
987 | ||
988 | static long | |
989 | get_memory_write_packet_size (void) | |
990 | { | |
991 | return get_memory_packet_size (&memory_write_packet_config); | |
992 | } | |
993 | ||
994 | static struct memory_packet_config memory_read_packet_config = | |
995 | { | |
996 | "memory-read-packet-size", | |
997 | }; | |
998 | ||
999 | static void | |
1000 | set_memory_read_packet_size (char *args, int from_tty) | |
1001 | { | |
1002 | set_memory_packet_size (args, &memory_read_packet_config); | |
1003 | } | |
1004 | ||
1005 | static void | |
1006 | show_memory_read_packet_size (char *args, int from_tty) | |
1007 | { | |
1008 | show_memory_packet_size (&memory_read_packet_config); | |
1009 | } | |
1010 | ||
1011 | static long | |
1012 | get_memory_read_packet_size (void) | |
1013 | { | |
1014 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1015 | |
11cf8741 JM |
1016 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1017 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1018 | increased beyond this. */ |
1019 | if (size > get_remote_packet_size ()) | |
1020 | size = get_remote_packet_size (); | |
11cf8741 JM |
1021 | return size; |
1022 | } | |
1023 | ||
11cf8741 | 1024 | \f |
5a2468f5 | 1025 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1026 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1027 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1028 | |
1029 | enum packet_support | |
1030 | { | |
1031 | PACKET_SUPPORT_UNKNOWN = 0, | |
1032 | PACKET_ENABLE, | |
1033 | PACKET_DISABLE | |
1034 | }; | |
1035 | ||
5a2468f5 JM |
1036 | struct packet_config |
1037 | { | |
bb572ddd DJ |
1038 | const char *name; |
1039 | const char *title; | |
7f19b9a2 | 1040 | enum auto_boolean detect; |
5a2468f5 JM |
1041 | enum packet_support support; |
1042 | }; | |
1043 | ||
d471ea57 | 1044 | /* Analyze a packet's return value and update the packet config |
23860348 | 1045 | accordingly. */ |
d471ea57 AC |
1046 | |
1047 | enum packet_result | |
1048 | { | |
1049 | PACKET_ERROR, | |
1050 | PACKET_OK, | |
1051 | PACKET_UNKNOWN | |
1052 | }; | |
1053 | ||
5a2468f5 | 1054 | static void |
d471ea57 | 1055 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1056 | { |
d471ea57 AC |
1057 | switch (config->detect) |
1058 | { | |
7f19b9a2 | 1059 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1060 | config->support = PACKET_ENABLE; |
1061 | break; | |
7f19b9a2 | 1062 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1063 | config->support = PACKET_DISABLE; |
1064 | break; | |
7f19b9a2 | 1065 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1066 | config->support = PACKET_SUPPORT_UNKNOWN; |
1067 | break; | |
1068 | } | |
5a2468f5 JM |
1069 | } |
1070 | ||
1071 | static void | |
fba45db2 | 1072 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1073 | { |
1074 | char *support = "internal-error"; | |
a744cf53 | 1075 | |
5a2468f5 JM |
1076 | switch (config->support) |
1077 | { | |
1078 | case PACKET_ENABLE: | |
1079 | support = "enabled"; | |
1080 | break; | |
1081 | case PACKET_DISABLE: | |
1082 | support = "disabled"; | |
1083 | break; | |
1084 | case PACKET_SUPPORT_UNKNOWN: | |
1085 | support = "unknown"; | |
1086 | break; | |
1087 | } | |
1088 | switch (config->detect) | |
1089 | { | |
7f19b9a2 | 1090 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1091 | printf_filtered (_("Support for the `%s' packet " |
1092 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1093 | config->name, support); |
5a2468f5 | 1094 | break; |
7f19b9a2 AC |
1095 | case AUTO_BOOLEAN_TRUE: |
1096 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1097 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1098 | config->name, support); | |
8e248173 | 1099 | break; |
5a2468f5 JM |
1100 | } |
1101 | } | |
1102 | ||
1103 | static void | |
bb572ddd DJ |
1104 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1105 | const char *title, int legacy) | |
d471ea57 | 1106 | { |
5a2468f5 JM |
1107 | char *set_doc; |
1108 | char *show_doc; | |
d471ea57 | 1109 | char *cmd_name; |
3ed07be4 | 1110 | |
5a2468f5 JM |
1111 | config->name = name; |
1112 | config->title = title; | |
7f19b9a2 | 1113 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1114 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1115 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1116 | name, title); | |
3e43a32a MS |
1117 | show_doc = xstrprintf ("Show current use of remote " |
1118 | "protocol `%s' (%s) packet", | |
b435e160 | 1119 | name, title); |
d471ea57 | 1120 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1121 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1122 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1123 | &config->detect, set_doc, |
1124 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1125 | set_remote_protocol_packet_cmd, |
1126 | show_remote_protocol_packet_cmd, | |
1127 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1128 | /* The command code copies the documentation strings. */ |
1129 | xfree (set_doc); | |
1130 | xfree (show_doc); | |
23860348 | 1131 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1132 | if (legacy) |
1133 | { | |
1134 | char *legacy_name; | |
a744cf53 | 1135 | |
b435e160 | 1136 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1137 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1138 | &remote_set_cmdlist); |
d471ea57 | 1139 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1140 | &remote_show_cmdlist); |
d471ea57 | 1141 | } |
5a2468f5 JM |
1142 | } |
1143 | ||
d471ea57 | 1144 | static enum packet_result |
a76d924d | 1145 | packet_check_result (const char *buf) |
5a2468f5 | 1146 | { |
d471ea57 | 1147 | if (buf[0] != '\0') |
5a2468f5 | 1148 | { |
d471ea57 | 1149 | /* The stub recognized the packet request. Check that the |
23860348 | 1150 | operation succeeded. */ |
a76d924d DJ |
1151 | if (buf[0] == 'E' |
1152 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1153 | && buf[3] == '\0') | |
1154 | /* "Enn" - definitly an error. */ | |
1155 | return PACKET_ERROR; | |
1156 | ||
1157 | /* Always treat "E." as an error. This will be used for | |
1158 | more verbose error messages, such as E.memtypes. */ | |
1159 | if (buf[0] == 'E' && buf[1] == '.') | |
1160 | return PACKET_ERROR; | |
1161 | ||
1162 | /* The packet may or may not be OK. Just assume it is. */ | |
1163 | return PACKET_OK; | |
1164 | } | |
1165 | else | |
1166 | /* The stub does not support the packet. */ | |
1167 | return PACKET_UNKNOWN; | |
1168 | } | |
1169 | ||
1170 | static enum packet_result | |
1171 | packet_ok (const char *buf, struct packet_config *config) | |
1172 | { | |
1173 | enum packet_result result; | |
1174 | ||
1175 | result = packet_check_result (buf); | |
1176 | switch (result) | |
1177 | { | |
1178 | case PACKET_OK: | |
1179 | case PACKET_ERROR: | |
1180 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1181 | switch (config->support) |
1182 | { | |
1183 | case PACKET_SUPPORT_UNKNOWN: | |
1184 | if (remote_debug) | |
1185 | fprintf_unfiltered (gdb_stdlog, | |
1186 | "Packet %s (%s) is supported\n", | |
1187 | config->name, config->title); | |
1188 | config->support = PACKET_ENABLE; | |
1189 | break; | |
1190 | case PACKET_DISABLE: | |
8e65ff28 | 1191 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1192 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1193 | break; |
1194 | case PACKET_ENABLE: | |
1195 | break; | |
1196 | } | |
a76d924d DJ |
1197 | break; |
1198 | case PACKET_UNKNOWN: | |
23860348 | 1199 | /* The stub does not support the packet. */ |
d471ea57 AC |
1200 | switch (config->support) |
1201 | { | |
1202 | case PACKET_ENABLE: | |
7f19b9a2 | 1203 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1204 | /* If the stub previously indicated that the packet was |
23860348 | 1205 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1206 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1207 | config->name, config->title); |
1208 | else | |
23860348 | 1209 | /* The user set it wrong. */ |
8a3fe4f8 | 1210 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1211 | config->name, config->title); |
1212 | break; | |
1213 | case PACKET_SUPPORT_UNKNOWN: | |
1214 | if (remote_debug) | |
1215 | fprintf_unfiltered (gdb_stdlog, | |
1216 | "Packet %s (%s) is NOT supported\n", | |
1217 | config->name, config->title); | |
1218 | config->support = PACKET_DISABLE; | |
1219 | break; | |
1220 | case PACKET_DISABLE: | |
1221 | break; | |
1222 | } | |
a76d924d | 1223 | break; |
5a2468f5 | 1224 | } |
a76d924d DJ |
1225 | |
1226 | return result; | |
5a2468f5 JM |
1227 | } |
1228 | ||
444abaca DJ |
1229 | enum { |
1230 | PACKET_vCont = 0, | |
1231 | PACKET_X, | |
1232 | PACKET_qSymbol, | |
1233 | PACKET_P, | |
1234 | PACKET_p, | |
1235 | PACKET_Z0, | |
1236 | PACKET_Z1, | |
1237 | PACKET_Z2, | |
1238 | PACKET_Z3, | |
1239 | PACKET_Z4, | |
a6b151f1 DJ |
1240 | PACKET_vFile_open, |
1241 | PACKET_vFile_pread, | |
1242 | PACKET_vFile_pwrite, | |
1243 | PACKET_vFile_close, | |
1244 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1245 | PACKET_vFile_readlink, |
0876f84a | 1246 | PACKET_qXfer_auxv, |
23181151 | 1247 | PACKET_qXfer_features, |
cfa9d6d9 | 1248 | PACKET_qXfer_libraries, |
2268b414 | 1249 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1250 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1251 | PACKET_qXfer_spu_read, |
1252 | PACKET_qXfer_spu_write, | |
07e059b5 | 1253 | PACKET_qXfer_osdata, |
dc146f7c | 1254 | PACKET_qXfer_threads, |
0fb4aa4b | 1255 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1256 | PACKET_qXfer_traceframe_info, |
169081d0 | 1257 | PACKET_qXfer_uib, |
711e434b | 1258 | PACKET_qGetTIBAddr, |
444abaca | 1259 | PACKET_qGetTLSAddr, |
be2a5f71 | 1260 | PACKET_qSupported, |
89be2091 | 1261 | PACKET_QPassSignals, |
08388c79 | 1262 | PACKET_qSearch_memory, |
2d717e4f DJ |
1263 | PACKET_vAttach, |
1264 | PACKET_vRun, | |
a6f3e723 | 1265 | PACKET_QStartNoAckMode, |
82f73884 | 1266 | PACKET_vKill, |
4aa995e1 PA |
1267 | PACKET_qXfer_siginfo_read, |
1268 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1269 | PACKET_qAttached, |
782b2b07 | 1270 | PACKET_ConditionalTracepoints, |
3788aec7 | 1271 | PACKET_ConditionalBreakpoints, |
7a697b8d | 1272 | PACKET_FastTracepoints, |
0fb4aa4b | 1273 | PACKET_StaticTracepoints, |
1e4d1764 | 1274 | PACKET_InstallInTrace, |
40ab02ce MS |
1275 | PACKET_bc, |
1276 | PACKET_bs, | |
409873ef | 1277 | PACKET_TracepointSource, |
d914c394 | 1278 | PACKET_QAllow, |
78d85199 | 1279 | PACKET_qXfer_fdpic, |
03583c20 | 1280 | PACKET_QDisableRandomization, |
d1feda86 | 1281 | PACKET_QAgent, |
444abaca DJ |
1282 | PACKET_MAX |
1283 | }; | |
506fb367 | 1284 | |
444abaca | 1285 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1286 | |
1287 | static void | |
444abaca DJ |
1288 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1289 | struct cmd_list_element *c) | |
dc8acb97 | 1290 | { |
444abaca | 1291 | struct packet_config *packet; |
dc8acb97 | 1292 | |
444abaca DJ |
1293 | for (packet = remote_protocol_packets; |
1294 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1295 | packet++) | |
1296 | { | |
1297 | if (&packet->detect == c->var) | |
1298 | { | |
1299 | update_packet_config (packet); | |
1300 | return; | |
1301 | } | |
1302 | } | |
9b20d036 | 1303 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1304 | c->name); |
dc8acb97 MS |
1305 | } |
1306 | ||
5a2468f5 | 1307 | static void |
444abaca DJ |
1308 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1309 | struct cmd_list_element *c, | |
1310 | const char *value) | |
5a2468f5 | 1311 | { |
444abaca | 1312 | struct packet_config *packet; |
5a2468f5 | 1313 | |
444abaca DJ |
1314 | for (packet = remote_protocol_packets; |
1315 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1316 | packet++) | |
1317 | { | |
1318 | if (&packet->detect == c->var) | |
1319 | { | |
1320 | show_packet_config_cmd (packet); | |
1321 | return; | |
1322 | } | |
1323 | } | |
9b20d036 | 1324 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1325 | c->name); |
5a2468f5 JM |
1326 | } |
1327 | ||
d471ea57 AC |
1328 | /* Should we try one of the 'Z' requests? */ |
1329 | ||
1330 | enum Z_packet_type | |
1331 | { | |
1332 | Z_PACKET_SOFTWARE_BP, | |
1333 | Z_PACKET_HARDWARE_BP, | |
1334 | Z_PACKET_WRITE_WP, | |
1335 | Z_PACKET_READ_WP, | |
1336 | Z_PACKET_ACCESS_WP, | |
1337 | NR_Z_PACKET_TYPES | |
1338 | }; | |
96baa820 | 1339 | |
d471ea57 | 1340 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1341 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1342 | |
7f19b9a2 | 1343 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1344 | |
1345 | static void | |
fba45db2 KB |
1346 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1347 | struct cmd_list_element *c) | |
96baa820 | 1348 | { |
d471ea57 | 1349 | int i; |
a744cf53 | 1350 | |
d471ea57 AC |
1351 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1352 | { | |
444abaca DJ |
1353 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1354 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1355 | } |
96baa820 JM |
1356 | } |
1357 | ||
1358 | static void | |
08546159 AC |
1359 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1360 | struct cmd_list_element *c, | |
1361 | const char *value) | |
96baa820 | 1362 | { |
d471ea57 | 1363 | int i; |
a744cf53 | 1364 | |
d471ea57 AC |
1365 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1366 | { | |
444abaca | 1367 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1368 | } |
96baa820 JM |
1369 | } |
1370 | ||
9d1f7ab2 MS |
1371 | /* Should we try the 'ThreadInfo' query packet? |
1372 | ||
1373 | This variable (NOT available to the user: auto-detect only!) | |
1374 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1375 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1376 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1377 | and set to false when the target fails to recognize it). */ |
1378 | ||
1379 | static int use_threadinfo_query; | |
1380 | static int use_threadextra_query; | |
1381 | ||
23860348 | 1382 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1383 | static struct async_signal_handler *sigint_remote_twice_token; |
1384 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1385 | |
74531fed PA |
1386 | \f |
1387 | /* Asynchronous signal handle registered as event loop source for | |
1388 | when we have pending events ready to be passed to the core. */ | |
1389 | ||
1390 | static struct async_event_handler *remote_async_inferior_event_token; | |
1391 | ||
1392 | /* Asynchronous signal handle registered as event loop source for when | |
1393 | the remote sent us a %Stop notification. The registered callback | |
1394 | will do a vStopped sequence to pull the rest of the events out of | |
1395 | the remote side into our event queue. */ | |
1396 | ||
1397 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1398 | \f |
1399 | ||
79d7f229 PA |
1400 | static ptid_t magic_null_ptid; |
1401 | static ptid_t not_sent_ptid; | |
1402 | static ptid_t any_thread_ptid; | |
1403 | ||
1404 | /* These are the threads which we last sent to the remote system. The | |
1405 | TID member will be -1 for all or -2 for not sent yet. */ | |
1406 | ||
1407 | static ptid_t general_thread; | |
1408 | static ptid_t continue_thread; | |
c5aa993b | 1409 | |
e6e4e701 PA |
1410 | /* This the traceframe which we last selected on the remote system. |
1411 | It will be -1 if no traceframe is selected. */ | |
1412 | static int remote_traceframe_number = -1; | |
1413 | ||
0b16c5cf PA |
1414 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1415 | detach instead of killing it when bailing out). */ | |
1416 | ||
1417 | static int | |
1418 | remote_query_attached (int pid) | |
1419 | { | |
1420 | struct remote_state *rs = get_remote_state (); | |
1421 | ||
1422 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1423 | return 0; | |
1424 | ||
1425 | if (remote_multi_process_p (rs)) | |
1426 | sprintf (rs->buf, "qAttached:%x", pid); | |
1427 | else | |
1428 | sprintf (rs->buf, "qAttached"); | |
1429 | ||
1430 | putpkt (rs->buf); | |
1431 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1432 | ||
1433 | switch (packet_ok (rs->buf, | |
1554e9be | 1434 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1435 | { |
1436 | case PACKET_OK: | |
1437 | if (strcmp (rs->buf, "1") == 0) | |
1438 | return 1; | |
1439 | break; | |
1440 | case PACKET_ERROR: | |
1441 | warning (_("Remote failure reply: %s"), rs->buf); | |
1442 | break; | |
1443 | case PACKET_UNKNOWN: | |
1444 | break; | |
1445 | } | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
49c62f2e PA |
1450 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
1451 | has been invented by GDB, instead of reported by the target. Since | |
1452 | we can be connected to a remote system before before knowing about | |
1453 | any inferior, mark the target with execution when we find the first | |
1454 | inferior. If ATTACHED is 1, then we had just attached to this | |
1455 | inferior. If it is 0, then we just created this inferior. If it | |
1456 | is -1, then try querying the remote stub to find out if it had | |
1457 | attached to the inferior or not. */ | |
1941c569 PA |
1458 | |
1459 | static struct inferior * | |
49c62f2e | 1460 | remote_add_inferior (int fake_pid_p, int pid, int attached) |
1941c569 | 1461 | { |
1941c569 PA |
1462 | struct inferior *inf; |
1463 | ||
0b16c5cf PA |
1464 | /* Check whether this process we're learning about is to be |
1465 | considered attached, or if is to be considered to have been | |
1466 | spawned by the stub. */ | |
1467 | if (attached == -1) | |
1468 | attached = remote_query_attached (pid); | |
1469 | ||
6c95b8df PA |
1470 | if (gdbarch_has_global_solist (target_gdbarch)) |
1471 | { | |
1472 | /* If the target shares code across all inferiors, then every | |
1473 | attach adds a new inferior. */ | |
1474 | inf = add_inferior (pid); | |
1475 | ||
1476 | /* ... and every inferior is bound to the same program space. | |
1477 | However, each inferior may still have its own address | |
1478 | space. */ | |
1479 | inf->aspace = maybe_new_address_space (); | |
1480 | inf->pspace = current_program_space; | |
1481 | } | |
1482 | else | |
1483 | { | |
1484 | /* In the traditional debugging scenario, there's a 1-1 match | |
1485 | between program/address spaces. We simply bind the inferior | |
1486 | to the program space's address space. */ | |
1487 | inf = current_inferior (); | |
1488 | inferior_appeared (inf, pid); | |
1489 | } | |
1941c569 | 1490 | |
0b16c5cf | 1491 | inf->attach_flag = attached; |
49c62f2e | 1492 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 1493 | |
1941c569 PA |
1494 | return inf; |
1495 | } | |
1496 | ||
1497 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1498 | according to RUNNING. */ | |
1499 | ||
c906108c | 1500 | static void |
1941c569 | 1501 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1502 | { |
1941c569 PA |
1503 | add_thread (ptid); |
1504 | ||
1505 | set_executing (ptid, running); | |
1506 | set_running (ptid, running); | |
1507 | } | |
1508 | ||
1509 | /* Come here when we learn about a thread id from the remote target. | |
1510 | It may be the first time we hear about such thread, so take the | |
1511 | opportunity to add it to GDB's thread list. In case this is the | |
1512 | first time we're noticing its corresponding inferior, add it to | |
1513 | GDB's inferior list as well. */ | |
1514 | ||
1515 | static void | |
1516 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1517 | { | |
c906108c SS |
1518 | /* If this is a new thread, add it to GDB's thread list. |
1519 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1520 | |
1521 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1522 | { | |
1523 | /* We're seeing an event on a thread id we knew had exited. | |
1524 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1525 | remote_add_thread (currthread, running); |
82f73884 PA |
1526 | return; |
1527 | } | |
1528 | ||
79d7f229 | 1529 | if (!in_thread_list (currthread)) |
c0a2216e | 1530 | { |
1941c569 | 1531 | struct inferior *inf = NULL; |
bad34192 | 1532 | int pid = ptid_get_pid (currthread); |
1941c569 | 1533 | |
bad34192 PA |
1534 | if (ptid_is_pid (inferior_ptid) |
1535 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1536 | { |
1537 | /* inferior_ptid has no thread member yet. This can happen | |
1538 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1539 | stub doesn't support qC. This is the first stop reported | |
1540 | after an attach, so this is the main thread. Update the | |
1541 | ptid in the thread list. */ | |
bad34192 PA |
1542 | if (in_thread_list (pid_to_ptid (pid))) |
1543 | thread_change_ptid (inferior_ptid, currthread); | |
1544 | else | |
1545 | { | |
1546 | remote_add_thread (currthread, running); | |
1547 | inferior_ptid = currthread; | |
1548 | } | |
dc146f7c | 1549 | return; |
c0a2216e | 1550 | } |
82f73884 PA |
1551 | |
1552 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1553 | { |
1554 | /* inferior_ptid is not set yet. This can happen with the | |
1555 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1556 | doesn't support qC. This is the first stop reported | |
1557 | after an attach, so this is the main thread. Update the | |
1558 | ptid in the thread list. */ | |
dc146f7c | 1559 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1560 | return; |
c0a2216e | 1561 | } |
82f73884 | 1562 | |
29c87f7f PA |
1563 | /* When connecting to a target remote, or to a target |
1564 | extended-remote which already was debugging an inferior, we | |
1565 | may not know about it yet. Add it before adding its child | |
1566 | thread, so notifications are emitted in a sensible order. */ | |
1567 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
49c62f2e PA |
1568 | { |
1569 | struct remote_state *rs = get_remote_state (); | |
1570 | int fake_pid_p = !remote_multi_process_p (rs); | |
1571 | ||
1572 | inf = remote_add_inferior (fake_pid_p, | |
1573 | ptid_get_pid (currthread), -1); | |
1574 | } | |
29c87f7f | 1575 | |
82f73884 | 1576 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1577 | remote_add_thread (currthread, running); |
1578 | ||
1579 | /* If we found a new inferior, let the common code do whatever | |
1580 | it needs to with it (e.g., read shared libraries, insert | |
1581 | breakpoints). */ | |
1582 | if (inf != NULL) | |
1583 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1584 | } |
c906108c SS |
1585 | } |
1586 | ||
dc146f7c VP |
1587 | /* Return the private thread data, creating it if necessary. */ |
1588 | ||
70221824 | 1589 | static struct private_thread_info * |
dc146f7c VP |
1590 | demand_private_info (ptid_t ptid) |
1591 | { | |
1592 | struct thread_info *info = find_thread_ptid (ptid); | |
1593 | ||
1594 | gdb_assert (info); | |
1595 | ||
1596 | if (!info->private) | |
1597 | { | |
1598 | info->private = xmalloc (sizeof (*(info->private))); | |
1599 | info->private_dtor = free_private_thread_info; | |
1600 | info->private->core = -1; | |
1601 | info->private->extra = 0; | |
1602 | } | |
1603 | ||
1604 | return info->private; | |
1605 | } | |
1606 | ||
74531fed PA |
1607 | /* Call this function as a result of |
1608 | 1) A halt indication (T packet) containing a thread id | |
1609 | 2) A direct query of currthread | |
0df8b418 | 1610 | 3) Successful execution of set thread */ |
74531fed PA |
1611 | |
1612 | static void | |
1613 | record_currthread (ptid_t currthread) | |
1614 | { | |
1615 | general_thread = currthread; | |
74531fed PA |
1616 | } |
1617 | ||
89be2091 DJ |
1618 | static char *last_pass_packet; |
1619 | ||
1620 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1621 | it can simply pass through to the inferior without reporting. */ | |
1622 | ||
1623 | static void | |
2455069d | 1624 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1625 | { |
1626 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1627 | { | |
1628 | char *pass_packet, *p; | |
89be2091 DJ |
1629 | int count = 0, i; |
1630 | ||
1631 | gdb_assert (numsigs < 256); | |
1632 | for (i = 0; i < numsigs; i++) | |
1633 | { | |
2455069d | 1634 | if (pass_signals[i]) |
89be2091 DJ |
1635 | count++; |
1636 | } | |
1637 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1638 | strcpy (pass_packet, "QPassSignals:"); | |
1639 | p = pass_packet + strlen (pass_packet); | |
1640 | for (i = 0; i < numsigs; i++) | |
1641 | { | |
2455069d | 1642 | if (pass_signals[i]) |
89be2091 DJ |
1643 | { |
1644 | if (i >= 16) | |
1645 | *p++ = tohex (i >> 4); | |
1646 | *p++ = tohex (i & 15); | |
1647 | if (count) | |
1648 | *p++ = ';'; | |
1649 | else | |
1650 | break; | |
1651 | count--; | |
1652 | } | |
1653 | } | |
1654 | *p = 0; | |
1655 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1656 | { | |
1657 | struct remote_state *rs = get_remote_state (); | |
1658 | char *buf = rs->buf; | |
1659 | ||
1660 | putpkt (pass_packet); | |
1661 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1662 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1663 | if (last_pass_packet) | |
1664 | xfree (last_pass_packet); | |
1665 | last_pass_packet = pass_packet; | |
1666 | } | |
1667 | else | |
1668 | xfree (pass_packet); | |
1669 | } | |
1670 | } | |
1671 | ||
79d7f229 PA |
1672 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1673 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1674 | thread. If GEN is set, set the general thread, if not, then set | |
1675 | the step/continue thread. */ | |
c906108c | 1676 | static void |
79d7f229 | 1677 | set_thread (struct ptid ptid, int gen) |
c906108c | 1678 | { |
d01949b6 | 1679 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1680 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1681 | char *buf = rs->buf; |
79d7f229 | 1682 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1683 | |
79d7f229 | 1684 | if (ptid_equal (state, ptid)) |
c906108c SS |
1685 | return; |
1686 | ||
79d7f229 PA |
1687 | *buf++ = 'H'; |
1688 | *buf++ = gen ? 'g' : 'c'; | |
1689 | if (ptid_equal (ptid, magic_null_ptid)) | |
1690 | xsnprintf (buf, endbuf - buf, "0"); | |
1691 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1692 | xsnprintf (buf, endbuf - buf, "0"); | |
1693 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1694 | xsnprintf (buf, endbuf - buf, "-1"); | |
1695 | else | |
82f73884 | 1696 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1697 | putpkt (rs->buf); |
6d820c5c | 1698 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1699 | if (gen) |
79d7f229 | 1700 | general_thread = ptid; |
c906108c | 1701 | else |
79d7f229 | 1702 | continue_thread = ptid; |
c906108c | 1703 | } |
79d7f229 PA |
1704 | |
1705 | static void | |
1706 | set_general_thread (struct ptid ptid) | |
1707 | { | |
1708 | set_thread (ptid, 1); | |
1709 | } | |
1710 | ||
1711 | static void | |
1712 | set_continue_thread (struct ptid ptid) | |
1713 | { | |
1714 | set_thread (ptid, 0); | |
1715 | } | |
1716 | ||
3c9c4b83 PA |
1717 | /* Change the remote current process. Which thread within the process |
1718 | ends up selected isn't important, as long as it is the same process | |
1719 | as what INFERIOR_PTID points to. | |
1720 | ||
1721 | This comes from that fact that there is no explicit notion of | |
1722 | "selected process" in the protocol. The selected process for | |
1723 | general operations is the process the selected general thread | |
1724 | belongs to. */ | |
1725 | ||
1726 | static void | |
1727 | set_general_process (void) | |
1728 | { | |
1729 | struct remote_state *rs = get_remote_state (); | |
1730 | ||
1731 | /* If the remote can't handle multiple processes, don't bother. */ | |
901f9912 | 1732 | if (!rs->extended || !remote_multi_process_p (rs)) |
3c9c4b83 PA |
1733 | return; |
1734 | ||
1735 | /* We only need to change the remote current thread if it's pointing | |
1736 | at some other process. */ | |
1737 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1738 | set_general_thread (inferior_ptid); | |
1739 | } | |
1740 | ||
c906108c | 1741 | \f |
79d7f229 PA |
1742 | /* Return nonzero if the thread PTID is still alive on the remote |
1743 | system. */ | |
c906108c SS |
1744 | |
1745 | static int | |
28439f5e | 1746 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1747 | { |
6d820c5c | 1748 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1749 | char *p, *endp; |
c906108c | 1750 | |
c0a2216e PA |
1751 | if (ptid_equal (ptid, magic_null_ptid)) |
1752 | /* The main thread is always alive. */ | |
1753 | return 1; | |
1754 | ||
1755 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1756 | /* The main thread is always alive. This can happen after a | |
1757 | vAttach, if the remote side doesn't support | |
1758 | multi-threading. */ | |
1759 | return 1; | |
1760 | ||
82f73884 PA |
1761 | p = rs->buf; |
1762 | endp = rs->buf + get_remote_packet_size (); | |
1763 | ||
1764 | *p++ = 'T'; | |
1765 | write_ptid (p, endp, ptid); | |
1766 | ||
2e9f7625 | 1767 | putpkt (rs->buf); |
6d820c5c | 1768 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1769 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1770 | } |
1771 | ||
1772 | /* About these extended threadlist and threadinfo packets. They are | |
1773 | variable length packets but, the fields within them are often fixed | |
1774 | length. They are redundent enough to send over UDP as is the | |
1775 | remote protocol in general. There is a matching unit test module | |
1776 | in libstub. */ | |
1777 | ||
cce74817 JM |
1778 | #define OPAQUETHREADBYTES 8 |
1779 | ||
1780 | /* a 64 bit opaque identifier */ | |
1781 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1782 | ||
23860348 | 1783 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1784 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1785 | changable. */ |
cce74817 JM |
1786 | |
1787 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1788 | Plan to fix this. */ |
cce74817 | 1789 | |
23860348 | 1790 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1791 | |
9d1f7ab2 | 1792 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1793 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1794 | |
1795 | struct gdb_ext_thread_info | |
c5aa993b | 1796 | { |
23860348 | 1797 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1798 | int active; /* Has state interesting to GDB? |
23860348 | 1799 | regs, stack. */ |
2bc416ba | 1800 | char display[256]; /* Brief state display, name, |
cedea757 | 1801 | blocked/suspended. */ |
23860348 | 1802 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1803 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1804 | whatever. */ |
c5aa993b | 1805 | }; |
cce74817 JM |
1806 | |
1807 | /* The volume of remote transfers can be limited by submitting | |
1808 | a mask containing bits specifying the desired information. | |
1809 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1810 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1811 | |
1812 | #define TAG_THREADID 1 | |
1813 | #define TAG_EXISTS 2 | |
1814 | #define TAG_DISPLAY 4 | |
1815 | #define TAG_THREADNAME 8 | |
c5aa993b | 1816 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1817 | |
23860348 | 1818 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1819 | |
b2dd6311 | 1820 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1821 | |
a14ed312 | 1822 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1823 | |
a14ed312 | 1824 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1825 | |
23860348 | 1826 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1827 | |
a14ed312 | 1828 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1829 | |
a14ed312 | 1830 | static char *pack_int (char *buf, int value); |
cce74817 | 1831 | |
a14ed312 | 1832 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1833 | |
a14ed312 | 1834 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1835 | |
23860348 | 1836 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1837 | |
23860348 | 1838 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1839 | |
23860348 | 1840 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1841 | |
23860348 | 1842 | static int threadref_to_int (threadref *ref); |
cce74817 | 1843 | |
23860348 | 1844 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1845 | |
23860348 | 1846 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1847 | |
2bc416ba | 1848 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1849 | threadref *id); |
cce74817 | 1850 | |
a14ed312 | 1851 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1852 | threadref *expectedref, |
a14ed312 KB |
1853 | struct gdb_ext_thread_info |
1854 | *info); | |
cce74817 JM |
1855 | |
1856 | ||
2bc416ba | 1857 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1858 | int fieldset, /*TAG mask */ |
a14ed312 | 1859 | struct gdb_ext_thread_info *info); |
cce74817 | 1860 | |
a14ed312 KB |
1861 | static char *pack_threadlist_request (char *pkt, int startflag, |
1862 | int threadcount, | |
23860348 | 1863 | threadref *nextthread); |
cce74817 | 1864 | |
a14ed312 KB |
1865 | static int parse_threadlist_response (char *pkt, |
1866 | int result_limit, | |
23860348 | 1867 | threadref *original_echo, |
2bc416ba | 1868 | threadref *resultlist, |
23860348 | 1869 | int *doneflag); |
cce74817 | 1870 | |
a14ed312 | 1871 | static int remote_get_threadlist (int startflag, |
23860348 | 1872 | threadref *nextthread, |
a14ed312 KB |
1873 | int result_limit, |
1874 | int *done, | |
2bc416ba | 1875 | int *result_count, |
23860348 | 1876 | threadref *threadlist); |
cce74817 | 1877 | |
23860348 | 1878 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1879 | |
a14ed312 KB |
1880 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1881 | void *context, int looplimit); | |
cce74817 | 1882 | |
23860348 | 1883 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1884 | |
82f73884 PA |
1885 | |
1886 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1887 | buffer we're allowed to write to. Returns | |
1888 | BUF+CHARACTERS_WRITTEN. */ | |
1889 | ||
1890 | static char * | |
1891 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1892 | { | |
1893 | int pid, tid; | |
1894 | struct remote_state *rs = get_remote_state (); | |
1895 | ||
1896 | if (remote_multi_process_p (rs)) | |
1897 | { | |
1898 | pid = ptid_get_pid (ptid); | |
1899 | if (pid < 0) | |
1900 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1901 | else | |
1902 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1903 | } | |
1904 | tid = ptid_get_tid (ptid); | |
1905 | if (tid < 0) | |
1906 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1907 | else | |
1908 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1909 | ||
1910 | return buf; | |
1911 | } | |
1912 | ||
1913 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1914 | passed the last parsed char. Returns null_ptid on error. */ | |
1915 | ||
1916 | static ptid_t | |
1917 | read_ptid (char *buf, char **obuf) | |
1918 | { | |
1919 | char *p = buf; | |
1920 | char *pp; | |
1921 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1922 | |
1923 | if (*p == 'p') | |
1924 | { | |
1925 | /* Multi-process ptid. */ | |
1926 | pp = unpack_varlen_hex (p + 1, &pid); | |
1927 | if (*pp != '.') | |
b37520b6 | 1928 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1929 | |
1930 | p = pp; | |
1931 | pp = unpack_varlen_hex (p + 1, &tid); | |
1932 | if (obuf) | |
1933 | *obuf = pp; | |
1934 | return ptid_build (pid, 0, tid); | |
1935 | } | |
1936 | ||
1937 | /* No multi-process. Just a tid. */ | |
1938 | pp = unpack_varlen_hex (p, &tid); | |
1939 | ||
1940 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1941 | what's in inferior_ptid, unless it's null at this point. If so, |
1942 | then since there's no way to know the pid of the reported | |
1943 | threads, use the magic number. */ | |
1944 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1945 | pid = ptid_get_pid (magic_null_ptid); | |
1946 | else | |
1947 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1948 | |
1949 | if (obuf) | |
1950 | *obuf = pp; | |
1951 | return ptid_build (pid, 0, tid); | |
1952 | } | |
1953 | ||
23860348 | 1954 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1955 | |
1956 | static const char hexchars[] = "0123456789abcdef"; | |
1957 | ||
1958 | static int | |
fba45db2 | 1959 | ishex (int ch, int *val) |
c906108c SS |
1960 | { |
1961 | if ((ch >= 'a') && (ch <= 'f')) | |
1962 | { | |
1963 | *val = ch - 'a' + 10; | |
1964 | return 1; | |
1965 | } | |
1966 | if ((ch >= 'A') && (ch <= 'F')) | |
1967 | { | |
1968 | *val = ch - 'A' + 10; | |
1969 | return 1; | |
1970 | } | |
1971 | if ((ch >= '0') && (ch <= '9')) | |
1972 | { | |
1973 | *val = ch - '0'; | |
1974 | return 1; | |
1975 | } | |
1976 | return 0; | |
1977 | } | |
1978 | ||
1979 | static int | |
fba45db2 | 1980 | stubhex (int ch) |
c906108c SS |
1981 | { |
1982 | if (ch >= 'a' && ch <= 'f') | |
1983 | return ch - 'a' + 10; | |
1984 | if (ch >= '0' && ch <= '9') | |
1985 | return ch - '0'; | |
1986 | if (ch >= 'A' && ch <= 'F') | |
1987 | return ch - 'A' + 10; | |
1988 | return -1; | |
1989 | } | |
1990 | ||
1991 | static int | |
fba45db2 | 1992 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1993 | { |
1994 | int nibble; | |
1995 | int retval = 0; | |
1996 | ||
1997 | while (fieldlength) | |
1998 | { | |
1999 | nibble = stubhex (*buff++); | |
2000 | retval |= nibble; | |
2001 | fieldlength--; | |
2002 | if (fieldlength) | |
2003 | retval = retval << 4; | |
2004 | } | |
2005 | return retval; | |
2006 | } | |
2007 | ||
2008 | char * | |
fba45db2 | 2009 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 2010 | ULONGEST *result) |
c906108c SS |
2011 | { |
2012 | int nibble; | |
d49c44d5 | 2013 | ULONGEST retval = 0; |
c906108c SS |
2014 | |
2015 | while (ishex (*buff, &nibble)) | |
2016 | { | |
2017 | buff++; | |
2018 | retval = retval << 4; | |
2019 | retval |= nibble & 0x0f; | |
2020 | } | |
2021 | *result = retval; | |
2022 | return buff; | |
2023 | } | |
2024 | ||
2025 | static char * | |
fba45db2 | 2026 | unpack_nibble (char *buf, int *val) |
c906108c | 2027 | { |
b7589f7d | 2028 | *val = fromhex (*buf++); |
c906108c SS |
2029 | return buf; |
2030 | } | |
2031 | ||
2032 | static char * | |
fba45db2 | 2033 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2034 | { |
2035 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2036 | return buf; | |
2037 | } | |
2038 | ||
2039 | static char * | |
fba45db2 | 2040 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2041 | { |
2042 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2043 | *pkt++ = hexchars[(byte & 0xf)]; | |
2044 | return pkt; | |
2045 | } | |
2046 | ||
2047 | static char * | |
fba45db2 | 2048 | unpack_byte (char *buf, int *value) |
c906108c SS |
2049 | { |
2050 | *value = stub_unpack_int (buf, 2); | |
2051 | return buf + 2; | |
2052 | } | |
2053 | ||
2054 | static char * | |
fba45db2 | 2055 | pack_int (char *buf, int value) |
c906108c SS |
2056 | { |
2057 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2058 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2059 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2060 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2061 | return buf; | |
2062 | } | |
2063 | ||
2064 | static char * | |
fba45db2 | 2065 | unpack_int (char *buf, int *value) |
c906108c SS |
2066 | { |
2067 | *value = stub_unpack_int (buf, 8); | |
2068 | return buf + 8; | |
2069 | } | |
2070 | ||
23860348 | 2071 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2072 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2073 | |
2074 | static char * | |
fba45db2 | 2075 | pack_string (char *pkt, char *string) |
c906108c SS |
2076 | { |
2077 | char ch; | |
2078 | int len; | |
2079 | ||
2080 | len = strlen (string); | |
2081 | if (len > 200) | |
23860348 | 2082 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2083 | pkt = pack_hex_byte (pkt, len); |
2084 | while (len-- > 0) | |
2085 | { | |
2086 | ch = *string++; | |
2087 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2088 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2089 | *pkt++ = ch; |
2090 | } | |
2091 | return pkt; | |
2092 | } | |
2093 | #endif /* 0 (unused) */ | |
2094 | ||
2095 | static char * | |
fba45db2 | 2096 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2097 | { |
2098 | while (length--) | |
2099 | *dest++ = *src++; | |
2100 | *dest = '\0'; | |
2101 | return src; | |
2102 | } | |
2103 | ||
2104 | static char * | |
fba45db2 | 2105 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2106 | { |
2107 | char *limit; | |
2108 | unsigned char *altid; | |
2109 | ||
2110 | altid = (unsigned char *) id; | |
2111 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2112 | while (pkt < limit) | |
2113 | pkt = pack_hex_byte (pkt, *altid++); | |
2114 | return pkt; | |
2115 | } | |
2116 | ||
2117 | ||
2118 | static char * | |
fba45db2 | 2119 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2120 | { |
2121 | char *altref; | |
2122 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2123 | int x, y; | |
2124 | ||
2125 | altref = (char *) id; | |
2126 | ||
2127 | while (inbuf < limit) | |
2128 | { | |
2129 | x = stubhex (*inbuf++); | |
2130 | y = stubhex (*inbuf++); | |
2131 | *altref++ = (x << 4) | y; | |
2132 | } | |
2133 | return inbuf; | |
2134 | } | |
2135 | ||
2136 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2137 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2138 | to use 64bit thread references internally. This is an adapter |
2139 | function. */ | |
2140 | ||
2141 | void | |
fba45db2 | 2142 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2143 | { |
2144 | unsigned char *scan; | |
2145 | ||
2146 | scan = (unsigned char *) id; | |
2147 | { | |
2148 | int i = 4; | |
2149 | while (i--) | |
2150 | *scan++ = 0; | |
2151 | } | |
2152 | *scan++ = (value >> 24) & 0xff; | |
2153 | *scan++ = (value >> 16) & 0xff; | |
2154 | *scan++ = (value >> 8) & 0xff; | |
2155 | *scan++ = (value & 0xff); | |
2156 | } | |
2157 | ||
2158 | static int | |
fba45db2 | 2159 | threadref_to_int (threadref *ref) |
c906108c SS |
2160 | { |
2161 | int i, value = 0; | |
2162 | unsigned char *scan; | |
2163 | ||
cfd77fa1 | 2164 | scan = *ref; |
c906108c SS |
2165 | scan += 4; |
2166 | i = 4; | |
2167 | while (i-- > 0) | |
2168 | value = (value << 8) | ((*scan++) & 0xff); | |
2169 | return value; | |
2170 | } | |
2171 | ||
2172 | static void | |
fba45db2 | 2173 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2174 | { |
2175 | int i; | |
2176 | unsigned char *csrc, *cdest; | |
2177 | ||
2178 | csrc = (unsigned char *) src; | |
2179 | cdest = (unsigned char *) dest; | |
2180 | i = 8; | |
2181 | while (i--) | |
2182 | *cdest++ = *csrc++; | |
2183 | } | |
2184 | ||
2185 | static int | |
fba45db2 | 2186 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2187 | { |
23860348 | 2188 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2189 | #if 0 |
2190 | unsigned char *srcp, *destp; | |
2191 | int i, result; | |
2192 | srcp = (char *) src; | |
2193 | destp = (char *) dest; | |
2194 | ||
2195 | result = 1; | |
2196 | while (i-- > 0) | |
2197 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2198 | return result; | |
2199 | #endif | |
2200 | return 1; | |
2201 | } | |
2202 | ||
2203 | /* | |
c5aa993b JM |
2204 | threadid:1, # always request threadid |
2205 | context_exists:2, | |
2206 | display:4, | |
2207 | unique_name:8, | |
2208 | more_display:16 | |
2209 | */ | |
c906108c SS |
2210 | |
2211 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2212 | ||
2213 | static char * | |
fba45db2 | 2214 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2215 | { |
23860348 MS |
2216 | *pkt++ = 'q'; /* Info Query */ |
2217 | *pkt++ = 'P'; /* process or thread info */ | |
2218 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2219 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2220 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2221 | return pkt; |
2222 | } | |
2223 | ||
23860348 | 2224 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2225 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2226 | add more fields as time goes by. */ |
c906108c | 2227 | |
23860348 | 2228 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2229 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2230 | fetch registers and its stack? */ |
c5aa993b | 2231 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2232 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2233 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2234 | the process. */ |
c906108c SS |
2235 | |
2236 | static int | |
fba45db2 KB |
2237 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2238 | struct gdb_ext_thread_info *info) | |
c906108c | 2239 | { |
d01949b6 | 2240 | struct remote_state *rs = get_remote_state (); |
c906108c | 2241 | int mask, length; |
cfd77fa1 | 2242 | int tag; |
c906108c | 2243 | threadref ref; |
6d820c5c | 2244 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2245 | int retval = 1; |
2246 | ||
23860348 | 2247 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2248 | info->active = 0; |
2249 | info->display[0] = '\0'; | |
2250 | info->shortname[0] = '\0'; | |
2251 | info->more_display[0] = '\0'; | |
2252 | ||
23860348 MS |
2253 | /* Assume the characters indicating the packet type have been |
2254 | stripped. */ | |
c906108c SS |
2255 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2256 | pkt = unpack_threadid (pkt, &ref); | |
2257 | ||
2258 | if (mask == 0) | |
8a3fe4f8 | 2259 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2260 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2261 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2262 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2263 | return 0; |
2264 | } | |
2265 | copy_threadref (&info->threadid, &ref); | |
2266 | ||
23860348 | 2267 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2268 | |
23860348 MS |
2269 | /* Packets are terminated with nulls. */ |
2270 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2271 | { |
2272 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2273 | pkt = unpack_byte (pkt, &length); /* length */ |
2274 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2275 | { |
8a3fe4f8 | 2276 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2277 | retval = 0; |
2278 | break; | |
2279 | } | |
2280 | if (tag == TAG_THREADID) | |
2281 | { | |
2282 | if (length != 16) | |
2283 | { | |
8a3fe4f8 | 2284 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2285 | retval = 0; |
2286 | break; | |
2287 | } | |
2288 | pkt = unpack_threadid (pkt, &ref); | |
2289 | mask = mask & ~TAG_THREADID; | |
2290 | continue; | |
2291 | } | |
2292 | if (tag == TAG_EXISTS) | |
2293 | { | |
2294 | info->active = stub_unpack_int (pkt, length); | |
2295 | pkt += length; | |
2296 | mask = mask & ~(TAG_EXISTS); | |
2297 | if (length > 8) | |
2298 | { | |
8a3fe4f8 | 2299 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2300 | retval = 0; |
2301 | break; | |
2302 | } | |
2303 | continue; | |
2304 | } | |
2305 | if (tag == TAG_THREADNAME) | |
2306 | { | |
2307 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2308 | mask = mask & ~TAG_THREADNAME; | |
2309 | continue; | |
2310 | } | |
2311 | if (tag == TAG_DISPLAY) | |
2312 | { | |
2313 | pkt = unpack_string (pkt, &info->display[0], length); | |
2314 | mask = mask & ~TAG_DISPLAY; | |
2315 | continue; | |
2316 | } | |
2317 | if (tag == TAG_MOREDISPLAY) | |
2318 | { | |
2319 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2320 | mask = mask & ~TAG_MOREDISPLAY; | |
2321 | continue; | |
2322 | } | |
8a3fe4f8 | 2323 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2324 | break; /* Not a tag we know about. */ |
c906108c SS |
2325 | } |
2326 | return retval; | |
2327 | } | |
2328 | ||
2329 | static int | |
fba45db2 KB |
2330 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2331 | struct gdb_ext_thread_info *info) | |
c906108c | 2332 | { |
d01949b6 | 2333 | struct remote_state *rs = get_remote_state (); |
c906108c | 2334 | int result; |
c906108c | 2335 | |
2e9f7625 DJ |
2336 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2337 | putpkt (rs->buf); | |
6d820c5c | 2338 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2339 | |
2340 | if (rs->buf[0] == '\0') | |
2341 | return 0; | |
2342 | ||
2e9f7625 | 2343 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2344 | threadid, info); |
c906108c SS |
2345 | return result; |
2346 | } | |
2347 | ||
c906108c SS |
2348 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2349 | ||
2350 | static char * | |
fba45db2 KB |
2351 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2352 | threadref *nextthread) | |
c906108c SS |
2353 | { |
2354 | *pkt++ = 'q'; /* info query packet */ | |
2355 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2356 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2357 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2358 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2359 | *pkt = '\0'; | |
2360 | return pkt; | |
2361 | } | |
2362 | ||
2363 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2364 | ||
2365 | static int | |
fba45db2 KB |
2366 | parse_threadlist_response (char *pkt, int result_limit, |
2367 | threadref *original_echo, threadref *resultlist, | |
2368 | int *doneflag) | |
c906108c | 2369 | { |
d01949b6 | 2370 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2371 | char *limit; |
2372 | int count, resultcount, done; | |
2373 | ||
2374 | resultcount = 0; | |
2375 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2376 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2377 | /* done parse past here */ |
c906108c SS |
2378 | pkt = unpack_byte (pkt, &count); /* count field */ |
2379 | pkt = unpack_nibble (pkt, &done); | |
2380 | /* The first threadid is the argument threadid. */ | |
2381 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2382 | while ((count-- > 0) && (pkt < limit)) | |
2383 | { | |
2384 | pkt = unpack_threadid (pkt, resultlist++); | |
2385 | if (resultcount++ >= result_limit) | |
2386 | break; | |
2387 | } | |
2388 | if (doneflag) | |
2389 | *doneflag = done; | |
2390 | return resultcount; | |
2391 | } | |
2392 | ||
2393 | static int | |
fba45db2 KB |
2394 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2395 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2396 | { |
d01949b6 | 2397 | struct remote_state *rs = get_remote_state (); |
c906108c | 2398 | static threadref echo_nextthread; |
c906108c SS |
2399 | int result = 1; |
2400 | ||
23860348 | 2401 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2402 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2403 | >= get_remote_packet_size ()) | |
ea9c271d | 2404 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2405 | |
6d820c5c DJ |
2406 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2407 | putpkt (rs->buf); | |
2408 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2409 | |
d8f2712d | 2410 | if (*rs->buf == '\0') |
21bce120 | 2411 | return 0; |
d8f2712d VP |
2412 | else |
2413 | *result_count = | |
2414 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2415 | threadlist, done); | |
c906108c SS |
2416 | |
2417 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2418 | { | |
23860348 MS |
2419 | /* FIXME: This is a good reason to drop the packet. */ |
2420 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2421 | /* Possabilities : |
2422 | retransmit immediatly - race conditions | |
2423 | retransmit after timeout - yes | |
2424 | exit | |
2425 | wait for packet, then exit | |
2426 | */ | |
8a3fe4f8 | 2427 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2428 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2429 | } |
2430 | if (*result_count <= 0) | |
2431 | { | |
2432 | if (*done != 1) | |
2433 | { | |
8a3fe4f8 | 2434 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2435 | result = 0; |
2436 | } | |
2437 | return result; /* break; */ | |
2438 | } | |
2439 | if (*result_count > result_limit) | |
2440 | { | |
2441 | *result_count = 0; | |
8a3fe4f8 | 2442 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2443 | return 0; |
2444 | } | |
2445 | return result; | |
2446 | } | |
2447 | ||
23860348 MS |
2448 | /* This is the interface between remote and threads, remotes upper |
2449 | interface. */ | |
c906108c SS |
2450 | |
2451 | /* remote_find_new_threads retrieves the thread list and for each | |
2452 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2453 | adding the thread if it does not already exist. This involves |
c906108c SS |
2454 | getting partial thread lists from the remote target so, polling the |
2455 | quit_flag is required. */ | |
2456 | ||
2457 | ||
23860348 | 2458 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2459 | |
2460 | #define MAXTHREADLISTRESULTS 32 | |
2461 | ||
2462 | static int | |
fba45db2 KB |
2463 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2464 | int looplimit) | |
c906108c SS |
2465 | { |
2466 | int done, i, result_count; | |
2467 | int startflag = 1; | |
2468 | int result = 1; | |
2469 | int loopcount = 0; | |
2470 | static threadref nextthread; | |
2471 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2472 | ||
2473 | done = 0; | |
2474 | while (!done) | |
2475 | { | |
2476 | if (loopcount++ > looplimit) | |
2477 | { | |
2478 | result = 0; | |
8a3fe4f8 | 2479 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2480 | break; |
2481 | } | |
2482 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2483 | &done, &result_count, resultthreadlist)) | |
2484 | { | |
2485 | result = 0; | |
2486 | break; | |
2487 | } | |
23860348 | 2488 | /* Clear for later iterations. */ |
c906108c SS |
2489 | startflag = 0; |
2490 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2491 | if (result_count >= 1) | |
2492 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2493 | i = 0; | |
2494 | while (result_count--) | |
2495 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2496 | break; | |
2497 | } | |
2498 | return result; | |
2499 | } | |
2500 | ||
2501 | static int | |
fba45db2 | 2502 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2503 | { |
79d7f229 PA |
2504 | int pid = ptid_get_pid (inferior_ptid); |
2505 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2506 | |
2507 | if (!in_thread_list (ptid)) | |
2508 | add_thread (ptid); | |
c906108c SS |
2509 | return 1; /* continue iterator */ |
2510 | } | |
2511 | ||
2512 | #define CRAZY_MAX_THREADS 1000 | |
2513 | ||
39f77062 KB |
2514 | static ptid_t |
2515 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2516 | { |
d01949b6 | 2517 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2518 | |
2519 | putpkt ("qC"); | |
6d820c5c | 2520 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2521 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2522 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2523 | else |
2524 | return oldpid; | |
2525 | } | |
2526 | ||
802188a7 RM |
2527 | /* Find new threads for info threads command. |
2528 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2529 | */ |
cce74817 JM |
2530 | |
2531 | static void | |
fba45db2 | 2532 | remote_find_new_threads (void) |
c906108c | 2533 | { |
c5aa993b JM |
2534 | remote_threadlist_iterator (remote_newthread_step, 0, |
2535 | CRAZY_MAX_THREADS); | |
c906108c SS |
2536 | } |
2537 | ||
dc146f7c VP |
2538 | #if defined(HAVE_LIBEXPAT) |
2539 | ||
2540 | typedef struct thread_item | |
2541 | { | |
2542 | ptid_t ptid; | |
2543 | char *extra; | |
2544 | int core; | |
2545 | } thread_item_t; | |
2546 | DEF_VEC_O(thread_item_t); | |
2547 | ||
2548 | struct threads_parsing_context | |
2549 | { | |
2550 | VEC (thread_item_t) *items; | |
2551 | }; | |
2552 | ||
2553 | static void | |
2554 | start_thread (struct gdb_xml_parser *parser, | |
2555 | const struct gdb_xml_element *element, | |
2556 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2557 | { | |
2558 | struct threads_parsing_context *data = user_data; | |
2559 | ||
2560 | struct thread_item item; | |
2561 | char *id; | |
3d2c1d41 | 2562 | struct gdb_xml_value *attr; |
dc146f7c | 2563 | |
3d2c1d41 | 2564 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2565 | item.ptid = read_ptid (id, NULL); |
2566 | ||
3d2c1d41 PA |
2567 | attr = xml_find_attribute (attributes, "core"); |
2568 | if (attr != NULL) | |
2569 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2570 | else |
2571 | item.core = -1; | |
2572 | ||
2573 | item.extra = 0; | |
2574 | ||
2575 | VEC_safe_push (thread_item_t, data->items, &item); | |
2576 | } | |
2577 | ||
2578 | static void | |
2579 | end_thread (struct gdb_xml_parser *parser, | |
2580 | const struct gdb_xml_element *element, | |
2581 | void *user_data, const char *body_text) | |
2582 | { | |
2583 | struct threads_parsing_context *data = user_data; | |
2584 | ||
2585 | if (body_text && *body_text) | |
2ae2a0b7 | 2586 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2587 | } |
2588 | ||
2589 | const struct gdb_xml_attribute thread_attributes[] = { | |
2590 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2591 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2592 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2593 | }; | |
2594 | ||
2595 | const struct gdb_xml_element thread_children[] = { | |
2596 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2597 | }; | |
2598 | ||
2599 | const struct gdb_xml_element threads_children[] = { | |
2600 | { "thread", thread_attributes, thread_children, | |
2601 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2602 | start_thread, end_thread }, | |
2603 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2604 | }; | |
2605 | ||
2606 | const struct gdb_xml_element threads_elements[] = { | |
2607 | { "threads", NULL, threads_children, | |
2608 | GDB_XML_EF_NONE, NULL, NULL }, | |
2609 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2610 | }; | |
2611 | ||
02357a4a PA |
2612 | /* Discard the contents of the constructed thread info context. */ |
2613 | ||
2614 | static void | |
2615 | clear_threads_parsing_context (void *p) | |
2616 | { | |
2617 | struct threads_parsing_context *context = p; | |
2618 | int i; | |
2619 | struct thread_item *item; | |
2620 | ||
2621 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2622 | xfree (item->extra); | |
2623 | ||
2624 | VEC_free (thread_item_t, context->items); | |
2625 | } | |
2626 | ||
dc146f7c VP |
2627 | #endif |
2628 | ||
9d1f7ab2 MS |
2629 | /* |
2630 | * Find all threads for info threads command. | |
2631 | * Uses new thread protocol contributed by Cisco. | |
2632 | * Falls back and attempts to use the older method (above) | |
2633 | * if the target doesn't respond to the new method. | |
2634 | */ | |
2635 | ||
0f71a2f6 | 2636 | static void |
28439f5e | 2637 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2638 | { |
d01949b6 | 2639 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2640 | char *bufp; |
79d7f229 | 2641 | ptid_t new_thread; |
0f71a2f6 JM |
2642 | |
2643 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2644 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2645 | |
dc146f7c VP |
2646 | #if defined(HAVE_LIBEXPAT) |
2647 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2648 | { | |
2649 | char *xml = target_read_stralloc (¤t_target, | |
2650 | TARGET_OBJECT_THREADS, NULL); | |
2651 | ||
2652 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2653 | |
dc146f7c VP |
2654 | if (xml && *xml) |
2655 | { | |
dc146f7c | 2656 | struct threads_parsing_context context; |
dc146f7c | 2657 | |
efc0eabd PA |
2658 | context.items = NULL; |
2659 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2660 | |
efc0eabd PA |
2661 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2662 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2663 | { |
2664 | int i; | |
2665 | struct thread_item *item; | |
2666 | ||
3e43a32a MS |
2667 | for (i = 0; |
2668 | VEC_iterate (thread_item_t, context.items, i, item); | |
2669 | ++i) | |
dc146f7c VP |
2670 | { |
2671 | if (!ptid_equal (item->ptid, null_ptid)) | |
2672 | { | |
2673 | struct private_thread_info *info; | |
2674 | /* In non-stop mode, we assume new found threads | |
2675 | are running until proven otherwise with a | |
2676 | stop reply. In all-stop, we can only get | |
2677 | here if all threads are stopped. */ | |
2678 | int running = non_stop ? 1 : 0; | |
2679 | ||
2680 | remote_notice_new_inferior (item->ptid, running); | |
2681 | ||
2682 | info = demand_private_info (item->ptid); | |
2683 | info->core = item->core; | |
2684 | info->extra = item->extra; | |
02357a4a | 2685 | item->extra = NULL; |
dc146f7c | 2686 | } |
dc146f7c VP |
2687 | } |
2688 | } | |
dc146f7c VP |
2689 | } |
2690 | ||
2691 | do_cleanups (back_to); | |
2692 | return; | |
2693 | } | |
2694 | #endif | |
2695 | ||
9d1f7ab2 MS |
2696 | if (use_threadinfo_query) |
2697 | { | |
2698 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2699 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2700 | bufp = rs->buf; |
9d1f7ab2 | 2701 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2702 | { |
9d1f7ab2 MS |
2703 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2704 | { | |
2705 | do | |
2706 | { | |
82f73884 | 2707 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2708 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2709 | { |
74531fed | 2710 | /* In non-stop mode, we assume new found threads |
1941c569 | 2711 | are running until proven otherwise with a |
74531fed PA |
2712 | stop reply. In all-stop, we can only get |
2713 | here if all threads are stopped. */ | |
1941c569 PA |
2714 | int running = non_stop ? 1 : 0; |
2715 | ||
2716 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2717 | } |
9d1f7ab2 MS |
2718 | } |
2719 | while (*bufp++ == ','); /* comma-separated list */ | |
2720 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2721 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2722 | bufp = rs->buf; |
9d1f7ab2 MS |
2723 | } |
2724 | return; /* done */ | |
2725 | } | |
2726 | } | |
2727 | ||
74531fed PA |
2728 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2729 | if (non_stop) | |
2730 | return; | |
2731 | ||
23860348 | 2732 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2733 | use_threadinfo_query = 0; |
2734 | remote_find_new_threads (); | |
2735 | return; | |
2736 | } | |
2737 | ||
802188a7 | 2738 | /* |
9d1f7ab2 MS |
2739 | * Collect a descriptive string about the given thread. |
2740 | * The target may say anything it wants to about the thread | |
2741 | * (typically info about its blocked / runnable state, name, etc.). | |
2742 | * This string will appear in the info threads display. | |
802188a7 | 2743 | * |
9d1f7ab2 MS |
2744 | * Optional: targets are not required to implement this function. |
2745 | */ | |
2746 | ||
2747 | static char * | |
2748 | remote_threads_extra_info (struct thread_info *tp) | |
2749 | { | |
d01949b6 | 2750 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2751 | int result; |
2752 | int set; | |
2753 | threadref id; | |
2754 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2755 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2756 | int n = 0; /* position in display_buf */ |
2757 | ||
2758 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2759 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2760 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2761 | |
60e569b9 PA |
2762 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2763 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2764 | /* This is the main thread which was added by GDB. The remote | |
2765 | server doesn't know about it. */ | |
2766 | return NULL; | |
2767 | ||
dc146f7c VP |
2768 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2769 | { | |
2770 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2771 | |
dc146f7c VP |
2772 | if (info && info->private) |
2773 | return info->private->extra; | |
2774 | else | |
2775 | return NULL; | |
2776 | } | |
2777 | ||
9d1f7ab2 MS |
2778 | if (use_threadextra_query) |
2779 | { | |
82f73884 PA |
2780 | char *b = rs->buf; |
2781 | char *endb = rs->buf + get_remote_packet_size (); | |
2782 | ||
2783 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2784 | b += strlen (b); | |
2785 | write_ptid (b, endb, tp->ptid); | |
2786 | ||
2e9f7625 | 2787 | putpkt (rs->buf); |
6d820c5c | 2788 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2789 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2790 | { |
2e9f7625 DJ |
2791 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2792 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2793 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2794 | return display_buf; |
2795 | } | |
0f71a2f6 | 2796 | } |
9d1f7ab2 MS |
2797 | |
2798 | /* If the above query fails, fall back to the old method. */ | |
2799 | use_threadextra_query = 0; | |
2800 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2801 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2802 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2803 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2804 | if (threadinfo.active) | |
0f71a2f6 | 2805 | { |
9d1f7ab2 | 2806 | if (*threadinfo.shortname) |
2bc416ba | 2807 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2808 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2809 | if (*threadinfo.display) |
2bc416ba | 2810 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2811 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2812 | if (*threadinfo.more_display) |
2bc416ba | 2813 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2814 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2815 | |
2816 | if (n > 0) | |
c5aa993b | 2817 | { |
23860348 | 2818 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2819 | if (',' == display_buf[n-1]) |
2820 | display_buf[n-1] = ' '; | |
2821 | return display_buf; | |
c5aa993b | 2822 | } |
0f71a2f6 | 2823 | } |
9d1f7ab2 | 2824 | return NULL; |
0f71a2f6 | 2825 | } |
c906108c | 2826 | \f |
c5aa993b | 2827 | |
0fb4aa4b PA |
2828 | static int |
2829 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2830 | struct static_tracepoint_marker *marker) | |
2831 | { | |
2832 | struct remote_state *rs = get_remote_state (); | |
2833 | char *p = rs->buf; | |
2834 | ||
2835 | sprintf (p, "qTSTMat:"); | |
2836 | p += strlen (p); | |
2837 | p += hexnumstr (p, addr); | |
2838 | putpkt (rs->buf); | |
2839 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2840 | p = rs->buf; | |
2841 | ||
2842 | if (*p == 'E') | |
2843 | error (_("Remote failure reply: %s"), p); | |
2844 | ||
2845 | if (*p++ == 'm') | |
2846 | { | |
2847 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2848 | return 1; | |
2849 | } | |
2850 | ||
2851 | return 0; | |
2852 | } | |
2853 | ||
0fb4aa4b PA |
2854 | static VEC(static_tracepoint_marker_p) * |
2855 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2856 | { | |
2857 | struct remote_state *rs = get_remote_state (); | |
2858 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2859 | struct static_tracepoint_marker *marker = NULL; | |
2860 | struct cleanup *old_chain; | |
2861 | char *p; | |
2862 | ||
2863 | /* Ask for a first packet of static tracepoint marker | |
2864 | definition. */ | |
2865 | putpkt ("qTfSTM"); | |
2866 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2867 | p = rs->buf; | |
2868 | if (*p == 'E') | |
2869 | error (_("Remote failure reply: %s"), p); | |
2870 | ||
2871 | old_chain = make_cleanup (free_current_marker, &marker); | |
2872 | ||
2873 | while (*p++ == 'm') | |
2874 | { | |
2875 | if (marker == NULL) | |
2876 | marker = XCNEW (struct static_tracepoint_marker); | |
2877 | ||
2878 | do | |
2879 | { | |
2880 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2881 | ||
2882 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2883 | { | |
2884 | VEC_safe_push (static_tracepoint_marker_p, | |
2885 | markers, marker); | |
2886 | marker = NULL; | |
2887 | } | |
2888 | else | |
2889 | { | |
2890 | release_static_tracepoint_marker (marker); | |
2891 | memset (marker, 0, sizeof (*marker)); | |
2892 | } | |
2893 | } | |
2894 | while (*p++ == ','); /* comma-separated list */ | |
2895 | /* Ask for another packet of static tracepoint definition. */ | |
2896 | putpkt ("qTsSTM"); | |
2897 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2898 | p = rs->buf; | |
2899 | } | |
2900 | ||
2901 | do_cleanups (old_chain); | |
2902 | return markers; | |
2903 | } | |
2904 | ||
2905 | \f | |
10760264 JB |
2906 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2907 | ||
2908 | static ptid_t | |
2909 | remote_get_ada_task_ptid (long lwp, long thread) | |
2910 | { | |
2911 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2912 | } | |
2913 | \f | |
2914 | ||
24b06219 | 2915 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2916 | |
2917 | static void | |
fba45db2 | 2918 | extended_remote_restart (void) |
c906108c | 2919 | { |
d01949b6 | 2920 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2921 | |
2922 | /* Send the restart command; for reasons I don't understand the | |
2923 | remote side really expects a number after the "R". */ | |
ea9c271d | 2924 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2925 | putpkt (rs->buf); |
c906108c | 2926 | |
ad9a8f3f | 2927 | remote_fileio_reset (); |
c906108c SS |
2928 | } |
2929 | \f | |
2930 | /* Clean up connection to a remote debugger. */ | |
2931 | ||
c906108c | 2932 | static void |
fba45db2 | 2933 | remote_close (int quitting) |
c906108c | 2934 | { |
d3fd5342 PA |
2935 | if (remote_desc == NULL) |
2936 | return; /* already closed */ | |
2937 | ||
2938 | /* Make sure we leave stdin registered in the event loop, and we | |
2939 | don't leave the async SIGINT signal handler installed. */ | |
2940 | remote_terminal_ours (); | |
ce5ce7ed | 2941 | |
d3fd5342 PA |
2942 | serial_close (remote_desc); |
2943 | remote_desc = NULL; | |
ce5ce7ed PA |
2944 | |
2945 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2946 | of all the inferiors and their threads we were controlling. |
2947 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
2948 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 2949 | inferior_ptid = null_ptid; |
f67fd822 | 2950 | discard_all_inferiors (); |
ce5ce7ed | 2951 | |
74531fed PA |
2952 | /* We're no longer interested in any of these events. */ |
2953 | discard_pending_stop_replies (-1); | |
2954 | ||
2955 | if (remote_async_inferior_event_token) | |
2956 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2957 | if (remote_async_get_pending_events_token) | |
2958 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2959 | } |
2960 | ||
23860348 | 2961 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2962 | |
2963 | static void | |
fba45db2 | 2964 | get_offsets (void) |
c906108c | 2965 | { |
d01949b6 | 2966 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2967 | char *buf; |
085dd6e6 | 2968 | char *ptr; |
31d99776 DJ |
2969 | int lose, num_segments = 0, do_sections, do_segments; |
2970 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2971 | struct section_offsets *offs; |
31d99776 DJ |
2972 | struct symfile_segment_data *data; |
2973 | ||
2974 | if (symfile_objfile == NULL) | |
2975 | return; | |
c906108c SS |
2976 | |
2977 | putpkt ("qOffsets"); | |
6d820c5c | 2978 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2979 | buf = rs->buf; |
c906108c SS |
2980 | |
2981 | if (buf[0] == '\000') | |
2982 | return; /* Return silently. Stub doesn't support | |
23860348 | 2983 | this command. */ |
c906108c SS |
2984 | if (buf[0] == 'E') |
2985 | { | |
8a3fe4f8 | 2986 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2987 | return; |
2988 | } | |
2989 | ||
2990 | /* Pick up each field in turn. This used to be done with scanf, but | |
2991 | scanf will make trouble if CORE_ADDR size doesn't match | |
2992 | conversion directives correctly. The following code will work | |
2993 | with any size of CORE_ADDR. */ | |
2994 | text_addr = data_addr = bss_addr = 0; | |
2995 | ptr = buf; | |
2996 | lose = 0; | |
2997 | ||
2998 | if (strncmp (ptr, "Text=", 5) == 0) | |
2999 | { | |
3000 | ptr += 5; | |
3001 | /* Don't use strtol, could lose on big values. */ | |
3002 | while (*ptr && *ptr != ';') | |
3003 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 3004 | |
31d99776 DJ |
3005 | if (strncmp (ptr, ";Data=", 6) == 0) |
3006 | { | |
3007 | ptr += 6; | |
3008 | while (*ptr && *ptr != ';') | |
3009 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3010 | } | |
3011 | else | |
3012 | lose = 1; | |
3013 | ||
3014 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3015 | { | |
3016 | ptr += 5; | |
3017 | while (*ptr && *ptr != ';') | |
3018 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3019 | |
31d99776 DJ |
3020 | if (bss_addr != data_addr) |
3021 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3022 | } | |
3023 | else | |
3024 | lose = 1; | |
3025 | } | |
3026 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3027 | { |
31d99776 DJ |
3028 | ptr += 8; |
3029 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3030 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3031 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3032 | num_segments = 1; | |
3033 | ||
3034 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3035 | { | |
3036 | ptr += 9; | |
3037 | while (*ptr && *ptr != ';') | |
3038 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3039 | num_segments++; | |
3040 | } | |
c906108c SS |
3041 | } |
3042 | else | |
3043 | lose = 1; | |
3044 | ||
3045 | if (lose) | |
8a3fe4f8 | 3046 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3047 | else if (*ptr != '\0') |
3048 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3049 | |
802188a7 | 3050 | offs = ((struct section_offsets *) |
a39a16c4 | 3051 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3052 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3053 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3054 | |
31d99776 DJ |
3055 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3056 | do_segments = (data != NULL); | |
3057 | do_sections = num_segments == 0; | |
c906108c | 3058 | |
28c32713 | 3059 | if (num_segments > 0) |
31d99776 | 3060 | { |
31d99776 DJ |
3061 | segments[0] = text_addr; |
3062 | segments[1] = data_addr; | |
3063 | } | |
28c32713 JB |
3064 | /* If we have two segments, we can still try to relocate everything |
3065 | by assuming that the .text and .data offsets apply to the whole | |
3066 | text and data segments. Convert the offsets given in the packet | |
3067 | to base addresses for symfile_map_offsets_to_segments. */ | |
3068 | else if (data && data->num_segments == 2) | |
3069 | { | |
3070 | segments[0] = data->segment_bases[0] + text_addr; | |
3071 | segments[1] = data->segment_bases[1] + data_addr; | |
3072 | num_segments = 2; | |
3073 | } | |
8d385431 DJ |
3074 | /* If the object file has only one segment, assume that it is text |
3075 | rather than data; main programs with no writable data are rare, | |
3076 | but programs with no code are useless. Of course the code might | |
3077 | have ended up in the data segment... to detect that we would need | |
3078 | the permissions here. */ | |
3079 | else if (data && data->num_segments == 1) | |
3080 | { | |
3081 | segments[0] = data->segment_bases[0] + text_addr; | |
3082 | num_segments = 1; | |
3083 | } | |
28c32713 JB |
3084 | /* There's no way to relocate by segment. */ |
3085 | else | |
3086 | do_segments = 0; | |
31d99776 DJ |
3087 | |
3088 | if (do_segments) | |
3089 | { | |
3090 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3091 | offs, num_segments, segments); | |
3092 | ||
3093 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3094 | error (_("Can not handle qOffsets TextSeg " |
3095 | "response with this symbol file")); | |
31d99776 DJ |
3096 | |
3097 | if (ret > 0) | |
3098 | do_sections = 0; | |
3099 | } | |
c906108c | 3100 | |
9ef895d6 DJ |
3101 | if (data) |
3102 | free_symfile_segment_data (data); | |
31d99776 DJ |
3103 | |
3104 | if (do_sections) | |
3105 | { | |
3106 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3107 | ||
3e43a32a MS |
3108 | /* This is a temporary kludge to force data and bss to use the |
3109 | same offsets because that's what nlmconv does now. The real | |
3110 | solution requires changes to the stub and remote.c that I | |
3111 | don't have time to do right now. */ | |
31d99776 DJ |
3112 | |
3113 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3114 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3115 | } | |
c906108c SS |
3116 | |
3117 | objfile_relocate (symfile_objfile, offs); | |
3118 | } | |
3119 | ||
74531fed PA |
3120 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3121 | threads we know are stopped already. This is used during the | |
3122 | initial remote connection in non-stop mode --- threads that are | |
3123 | reported as already being stopped are left stopped. */ | |
3124 | ||
3125 | static int | |
3126 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3127 | { | |
3128 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3129 | if (peek_stop_reply (thread->ptid)) | |
3130 | set_stop_requested (thread->ptid, 1); | |
3131 | ||
3132 | return 0; | |
3133 | } | |
3134 | ||
9a7071a8 JB |
3135 | /* Send interrupt_sequence to remote target. */ |
3136 | static void | |
eeae04df | 3137 | send_interrupt_sequence (void) |
9a7071a8 JB |
3138 | { |
3139 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3140 | serial_write (remote_desc, "\x03", 1); | |
3141 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3142 | serial_send_break (remote_desc); | |
3143 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3144 | { | |
3145 | serial_send_break (remote_desc); | |
3146 | serial_write (remote_desc, "g", 1); | |
3147 | } | |
3148 | else | |
3149 | internal_error (__FILE__, __LINE__, | |
3150 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3151 | interrupt_sequence_mode); | |
3152 | } | |
3153 | ||
49c62f2e PA |
3154 | /* Query the remote target for which is the current thread/process, |
3155 | add it to our tables, and update INFERIOR_PTID. The caller is | |
3156 | responsible for setting the state such that the remote end is ready | |
3157 | to return the current thread. */ | |
3158 | ||
3159 | static void | |
3160 | add_current_inferior_and_thread (void) | |
3161 | { | |
3162 | struct remote_state *rs = get_remote_state (); | |
3163 | int fake_pid_p = 0; | |
3164 | ptid_t ptid; | |
3165 | ||
3166 | inferior_ptid = null_ptid; | |
3167 | ||
3168 | /* Now, if we have thread information, update inferior_ptid. */ | |
3169 | ptid = remote_current_thread (inferior_ptid); | |
3170 | if (!ptid_equal (ptid, null_ptid)) | |
3171 | { | |
3172 | if (!remote_multi_process_p (rs)) | |
3173 | fake_pid_p = 1; | |
3174 | ||
3175 | inferior_ptid = ptid; | |
3176 | } | |
3177 | else | |
3178 | { | |
3179 | /* Without this, some commands which require an active target | |
3180 | (such as kill) won't work. This variable serves (at least) | |
3181 | double duty as both the pid of the target process (if it has | |
3182 | such), and as a flag indicating that a target is active. */ | |
3183 | inferior_ptid = magic_null_ptid; | |
3184 | fake_pid_p = 1; | |
3185 | } | |
3186 | ||
3187 | remote_add_inferior (fake_pid_p, ptid_get_pid (inferior_ptid), -1); | |
3188 | ||
3189 | /* Add the main thread. */ | |
3190 | add_thread_silent (inferior_ptid); | |
3191 | } | |
3192 | ||
9cbc821d | 3193 | static void |
04bd08de | 3194 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3195 | { |
c8d104ad PA |
3196 | struct remote_state *rs = get_remote_state (); |
3197 | struct packet_config *noack_config; | |
2d717e4f | 3198 | char *wait_status = NULL; |
8621d6a9 | 3199 | |
23860348 | 3200 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3201 | |
9a7071a8 JB |
3202 | if (interrupt_on_connect) |
3203 | send_interrupt_sequence (); | |
3204 | ||
57e12211 TT |
3205 | /* Ack any packet which the remote side has already sent. */ |
3206 | serial_write (remote_desc, "+", 1); | |
3207 | ||
c8d104ad PA |
3208 | /* The first packet we send to the target is the optional "supported |
3209 | packets" request. If the target can answer this, it will tell us | |
3210 | which later probes to skip. */ | |
3211 | remote_query_supported (); | |
3212 | ||
d914c394 SS |
3213 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3214 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3215 | remote_set_permissions (); | |
3216 | ||
c8d104ad PA |
3217 | /* Next, we possibly activate noack mode. |
3218 | ||
3219 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3220 | enable noack mode if the stub reported a wish for it with | |
3221 | qSupported. | |
3222 | ||
3223 | If set to TRUE, then enable noack mode even if the stub didn't | |
3224 | report it in qSupported. If the stub doesn't reply OK, the | |
3225 | session ends with an error. | |
3226 | ||
3227 | If FALSE, then don't activate noack mode, regardless of what the | |
3228 | stub claimed should be the default with qSupported. */ | |
3229 | ||
3230 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3231 | ||
3232 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3233 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3234 | && noack_config->support == PACKET_ENABLE)) | |
3235 | { | |
3236 | putpkt ("QStartNoAckMode"); | |
3237 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3238 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3239 | rs->noack_mode = 1; | |
3240 | } | |
3241 | ||
04bd08de | 3242 | if (extended_p) |
5fe04517 PA |
3243 | { |
3244 | /* Tell the remote that we are using the extended protocol. */ | |
3245 | putpkt ("!"); | |
3246 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3247 | } | |
3248 | ||
d962ef82 DJ |
3249 | /* Next, if the target can specify a description, read it. We do |
3250 | this before anything involving memory or registers. */ | |
3251 | target_find_description (); | |
3252 | ||
6c95b8df PA |
3253 | /* Next, now that we know something about the target, update the |
3254 | address spaces in the program spaces. */ | |
3255 | update_address_spaces (); | |
3256 | ||
50c71eaf PA |
3257 | /* On OSs where the list of libraries is global to all |
3258 | processes, we fetch them early. */ | |
3259 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3260 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3261 | |
74531fed PA |
3262 | if (non_stop) |
3263 | { | |
3264 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3265 | error (_("Non-stop mode requested, but remote " |
3266 | "does not support non-stop")); | |
74531fed PA |
3267 | |
3268 | putpkt ("QNonStop:1"); | |
3269 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3270 | ||
3271 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3272 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3273 | |
3274 | /* Find about threads and processes the stub is already | |
3275 | controlling. We default to adding them in the running state. | |
3276 | The '?' query below will then tell us about which threads are | |
3277 | stopped. */ | |
04bd08de | 3278 | remote_threads_info (target); |
74531fed PA |
3279 | } |
3280 | else if (rs->non_stop_aware) | |
3281 | { | |
3282 | /* Don't assume that the stub can operate in all-stop mode. | |
3283 | Request it explicitely. */ | |
3284 | putpkt ("QNonStop:0"); | |
3285 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3286 | ||
3287 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3288 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3289 | } |
3290 | ||
2d717e4f DJ |
3291 | /* Check whether the target is running now. */ |
3292 | putpkt ("?"); | |
3293 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3294 | ||
74531fed | 3295 | if (!non_stop) |
2d717e4f | 3296 | { |
e714e1bf UW |
3297 | ptid_t ptid; |
3298 | int fake_pid_p = 0; | |
3299 | struct inferior *inf; | |
3300 | ||
74531fed | 3301 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3302 | { |
04bd08de | 3303 | if (!extended_p) |
74531fed | 3304 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3305 | |
3306 | /* We're connected, but not running. Drop out before we | |
3307 | call start_remote. */ | |
3308 | return; | |
2d717e4f DJ |
3309 | } |
3310 | else | |
74531fed | 3311 | { |
74531fed PA |
3312 | /* Save the reply for later. */ |
3313 | wait_status = alloca (strlen (rs->buf) + 1); | |
3314 | strcpy (wait_status, rs->buf); | |
3315 | } | |
3316 | ||
3317 | /* Let the stub know that we want it to return the thread. */ | |
3318 | set_continue_thread (minus_one_ptid); | |
3319 | ||
49c62f2e | 3320 | add_current_inferior_and_thread (); |
74531fed | 3321 | |
6e586cc5 YQ |
3322 | /* init_wait_for_inferior should be called before get_offsets in order |
3323 | to manage `inserted' flag in bp loc in a correct state. | |
3324 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3325 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3326 | start_remote, set `inserted' flag to 1. In the initialization of | |
3327 | inferior, breakpoint_init_inferior should be called first, and then | |
3328 | breakpoint_re_set can be called. If this order is broken, state of | |
3329 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3330 | manipulation. */ | |
3331 | init_wait_for_inferior (); | |
3332 | ||
74531fed PA |
3333 | get_offsets (); /* Get text, data & bss offsets. */ |
3334 | ||
d962ef82 DJ |
3335 | /* If we could not find a description using qXfer, and we know |
3336 | how to do it some other way, try again. This is not | |
3337 | supported for non-stop; it could be, but it is tricky if | |
3338 | there are no stopped threads when we connect. */ | |
04bd08de | 3339 | if (remote_read_description_p (target) |
d962ef82 DJ |
3340 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3341 | { | |
3342 | target_clear_description (); | |
3343 | target_find_description (); | |
3344 | } | |
3345 | ||
74531fed PA |
3346 | /* Use the previously fetched status. */ |
3347 | gdb_assert (wait_status != NULL); | |
3348 | strcpy (rs->buf, wait_status); | |
3349 | rs->cached_wait_status = 1; | |
3350 | ||
3351 | immediate_quit--; | |
04bd08de | 3352 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3353 | } |
3354 | else | |
3355 | { | |
68c97600 PA |
3356 | /* Clear WFI global state. Do this before finding about new |
3357 | threads and inferiors, and setting the current inferior. | |
3358 | Otherwise we would clear the proceed status of the current | |
3359 | inferior when we want its stop_soon state to be preserved | |
3360 | (see notice_new_inferior). */ | |
3361 | init_wait_for_inferior (); | |
3362 | ||
74531fed PA |
3363 | /* In non-stop, we will either get an "OK", meaning that there |
3364 | are no stopped threads at this time; or, a regular stop | |
3365 | reply. In the latter case, there may be more than one thread | |
3366 | stopped --- we pull them all out using the vStopped | |
3367 | mechanism. */ | |
3368 | if (strcmp (rs->buf, "OK") != 0) | |
3369 | { | |
3370 | struct stop_reply *stop_reply; | |
3371 | struct cleanup *old_chain; | |
2d717e4f | 3372 | |
74531fed PA |
3373 | stop_reply = stop_reply_xmalloc (); |
3374 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3375 | |
74531fed PA |
3376 | remote_parse_stop_reply (rs->buf, stop_reply); |
3377 | discard_cleanups (old_chain); | |
c0a2216e | 3378 | |
74531fed PA |
3379 | /* get_pending_stop_replies acks this one, and gets the rest |
3380 | out. */ | |
3381 | pending_stop_reply = stop_reply; | |
3382 | remote_get_pending_stop_replies (); | |
c906108c | 3383 | |
74531fed PA |
3384 | /* Make sure that threads that were stopped remain |
3385 | stopped. */ | |
3386 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3387 | } | |
2d717e4f | 3388 | |
74531fed PA |
3389 | if (target_can_async_p ()) |
3390 | target_async (inferior_event_handler, 0); | |
c906108c | 3391 | |
74531fed PA |
3392 | if (thread_count () == 0) |
3393 | { | |
04bd08de | 3394 | if (!extended_p) |
74531fed | 3395 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3396 | |
c35b1492 PA |
3397 | /* We're connected, but not running. Drop out before we |
3398 | call start_remote. */ | |
3399 | return; | |
3400 | } | |
74531fed PA |
3401 | |
3402 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3403 | |
74531fed PA |
3404 | /* Force the stub to choose a thread. */ |
3405 | set_general_thread (null_ptid); | |
c906108c | 3406 | |
74531fed PA |
3407 | /* Query it. */ |
3408 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3409 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3410 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3411 | |
74531fed PA |
3412 | get_offsets (); /* Get text, data & bss offsets. */ |
3413 | ||
3414 | /* In non-stop mode, any cached wait status will be stored in | |
3415 | the stop reply queue. */ | |
3416 | gdb_assert (wait_status == NULL); | |
f0223081 | 3417 | |
2455069d UW |
3418 | /* Report all signals during attach/startup. */ |
3419 | remote_pass_signals (0, NULL); | |
74531fed | 3420 | } |
c8d104ad | 3421 | |
c8d104ad PA |
3422 | /* If we connected to a live target, do some additional setup. */ |
3423 | if (target_has_execution) | |
3424 | { | |
3425 | if (exec_bfd) /* No use without an exec file. */ | |
3426 | remote_check_symbols (symfile_objfile); | |
3427 | } | |
50c71eaf | 3428 | |
d5551862 SS |
3429 | /* Possibly the target has been engaged in a trace run started |
3430 | previously; find out where things are at. */ | |
26afc0d7 | 3431 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3432 | { |
00bf0b85 SS |
3433 | struct uploaded_tp *uploaded_tps = NULL; |
3434 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3435 | ||
00bf0b85 SS |
3436 | if (current_trace_status ()->running) |
3437 | printf_filtered (_("Trace is already running on the target.\n")); | |
3438 | ||
3439 | /* Get trace state variables first, they may be checked when | |
3440 | parsing uploaded commands. */ | |
3441 | ||
3442 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3443 | ||
3444 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3445 | ||
3446 | remote_upload_tracepoints (&uploaded_tps); | |
3447 | ||
3448 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3449 | } |
3450 | ||
2567c7d9 PA |
3451 | /* If breakpoints are global, insert them now. */ |
3452 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3453 | && breakpoints_always_inserted_mode ()) |
3454 | insert_breakpoints (); | |
c906108c SS |
3455 | } |
3456 | ||
3457 | /* Open a connection to a remote debugger. | |
3458 | NAME is the filename used for communication. */ | |
3459 | ||
3460 | static void | |
fba45db2 | 3461 | remote_open (char *name, int from_tty) |
c906108c | 3462 | { |
75c99385 | 3463 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3464 | } |
3465 | ||
c906108c SS |
3466 | /* Open a connection to a remote debugger using the extended |
3467 | remote gdb protocol. NAME is the filename used for communication. */ | |
3468 | ||
3469 | static void | |
fba45db2 | 3470 | extended_remote_open (char *name, int from_tty) |
c906108c | 3471 | { |
75c99385 | 3472 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3473 | } |
3474 | ||
c906108c SS |
3475 | /* Generic code for opening a connection to a remote target. */ |
3476 | ||
d471ea57 AC |
3477 | static void |
3478 | init_all_packet_configs (void) | |
3479 | { | |
3480 | int i; | |
a744cf53 | 3481 | |
444abaca DJ |
3482 | for (i = 0; i < PACKET_MAX; i++) |
3483 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3484 | } |
3485 | ||
23860348 | 3486 | /* Symbol look-up. */ |
dc8acb97 MS |
3487 | |
3488 | static void | |
3489 | remote_check_symbols (struct objfile *objfile) | |
3490 | { | |
d01949b6 | 3491 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3492 | char *msg, *reply, *tmp; |
3493 | struct minimal_symbol *sym; | |
3494 | int end; | |
3495 | ||
63154eca PA |
3496 | /* The remote side has no concept of inferiors that aren't running |
3497 | yet, it only knows about running processes. If we're connected | |
3498 | but our current inferior is not running, we should not invite the | |
3499 | remote target to request symbol lookups related to its | |
3500 | (unrelated) current process. */ | |
3501 | if (!target_has_execution) | |
3502 | return; | |
3503 | ||
444abaca | 3504 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3505 | return; |
3506 | ||
63154eca PA |
3507 | /* Make sure the remote is pointing at the right process. Note |
3508 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3509 | set_general_process (); |
3510 | ||
6d820c5c DJ |
3511 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3512 | because we need both at the same time. */ | |
ea9c271d | 3513 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3514 | |
23860348 | 3515 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3516 | |
3517 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3518 | getpkt (&rs->buf, &rs->buf_size, 0); |
3519 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3520 | reply = rs->buf; |
dc8acb97 MS |
3521 | |
3522 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3523 | { | |
3524 | tmp = &reply[8]; | |
cfd77fa1 | 3525 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3526 | msg[end] = '\0'; |
3527 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3528 | if (sym == NULL) | |
ea9c271d | 3529 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3530 | else |
2bbe3cc1 | 3531 | { |
5af949e3 | 3532 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3533 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3534 | ||
3535 | /* If this is a function address, return the start of code | |
3536 | instead of any data function descriptor. */ | |
1cf3db46 | 3537 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3538 | sym_addr, |
3539 | ¤t_target); | |
3540 | ||
3541 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3542 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3543 | } |
3544 | ||
dc8acb97 | 3545 | putpkt (msg); |
6d820c5c | 3546 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3547 | reply = rs->buf; |
dc8acb97 MS |
3548 | } |
3549 | } | |
3550 | ||
9db8d71f DJ |
3551 | static struct serial * |
3552 | remote_serial_open (char *name) | |
3553 | { | |
3554 | static int udp_warning = 0; | |
3555 | ||
3556 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3557 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3558 | serial connection is reliable and not the serial connection promising | |
3559 | to be. */ | |
3560 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3561 | { | |
3e43a32a MS |
3562 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3563 | "Some events may be lost, rendering further debugging " | |
3564 | "impossible.")); | |
9db8d71f DJ |
3565 | udp_warning = 1; |
3566 | } | |
3567 | ||
3568 | return serial_open (name); | |
3569 | } | |
3570 | ||
d914c394 SS |
3571 | /* Inform the target of our permission settings. The permission flags |
3572 | work without this, but if the target knows the settings, it can do | |
3573 | a couple things. First, it can add its own check, to catch cases | |
3574 | that somehow manage to get by the permissions checks in target | |
3575 | methods. Second, if the target is wired to disallow particular | |
3576 | settings (for instance, a system in the field that is not set up to | |
3577 | be able to stop at a breakpoint), it can object to any unavailable | |
3578 | permissions. */ | |
3579 | ||
3580 | void | |
3581 | remote_set_permissions (void) | |
3582 | { | |
3583 | struct remote_state *rs = get_remote_state (); | |
3584 | ||
3585 | sprintf (rs->buf, "QAllow:" | |
3586 | "WriteReg:%x;WriteMem:%x;" | |
3587 | "InsertBreak:%x;InsertTrace:%x;" | |
3588 | "InsertFastTrace:%x;Stop:%x", | |
3589 | may_write_registers, may_write_memory, | |
3590 | may_insert_breakpoints, may_insert_tracepoints, | |
3591 | may_insert_fast_tracepoints, may_stop); | |
3592 | putpkt (rs->buf); | |
3593 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3594 | ||
3595 | /* If the target didn't like the packet, warn the user. Do not try | |
3596 | to undo the user's settings, that would just be maddening. */ | |
3597 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3598 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3599 | } |
3600 | ||
be2a5f71 DJ |
3601 | /* This type describes each known response to the qSupported |
3602 | packet. */ | |
3603 | struct protocol_feature | |
3604 | { | |
3605 | /* The name of this protocol feature. */ | |
3606 | const char *name; | |
3607 | ||
3608 | /* The default for this protocol feature. */ | |
3609 | enum packet_support default_support; | |
3610 | ||
3611 | /* The function to call when this feature is reported, or after | |
3612 | qSupported processing if the feature is not supported. | |
3613 | The first argument points to this structure. The second | |
3614 | argument indicates whether the packet requested support be | |
3615 | enabled, disabled, or probed (or the default, if this function | |
3616 | is being called at the end of processing and this feature was | |
3617 | not reported). The third argument may be NULL; if not NULL, it | |
3618 | is a NUL-terminated string taken from the packet following | |
3619 | this feature's name and an equals sign. */ | |
3620 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3621 | const char *); | |
3622 | ||
3623 | /* The corresponding packet for this feature. Only used if | |
3624 | FUNC is remote_supported_packet. */ | |
3625 | int packet; | |
3626 | }; | |
3627 | ||
be2a5f71 DJ |
3628 | static void |
3629 | remote_supported_packet (const struct protocol_feature *feature, | |
3630 | enum packet_support support, | |
3631 | const char *argument) | |
3632 | { | |
3633 | if (argument) | |
3634 | { | |
3635 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3636 | " \"%s\"."), feature->name); | |
3637 | return; | |
3638 | } | |
3639 | ||
3640 | if (remote_protocol_packets[feature->packet].support | |
3641 | == PACKET_SUPPORT_UNKNOWN) | |
3642 | remote_protocol_packets[feature->packet].support = support; | |
3643 | } | |
be2a5f71 DJ |
3644 | |
3645 | static void | |
3646 | remote_packet_size (const struct protocol_feature *feature, | |
3647 | enum packet_support support, const char *value) | |
3648 | { | |
3649 | struct remote_state *rs = get_remote_state (); | |
3650 | ||
3651 | int packet_size; | |
3652 | char *value_end; | |
3653 | ||
3654 | if (support != PACKET_ENABLE) | |
3655 | return; | |
3656 | ||
3657 | if (value == NULL || *value == '\0') | |
3658 | { | |
3659 | warning (_("Remote target reported \"%s\" without a size."), | |
3660 | feature->name); | |
3661 | return; | |
3662 | } | |
3663 | ||
3664 | errno = 0; | |
3665 | packet_size = strtol (value, &value_end, 16); | |
3666 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3667 | { | |
3668 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3669 | feature->name, value); | |
3670 | return; | |
3671 | } | |
3672 | ||
3673 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3674 | { | |
3675 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3676 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3677 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3678 | } | |
3679 | ||
3680 | /* Record the new maximum packet size. */ | |
3681 | rs->explicit_packet_size = packet_size; | |
3682 | } | |
3683 | ||
82f73884 PA |
3684 | static void |
3685 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3686 | enum packet_support support, const char *value) | |
3687 | { | |
3688 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3689 | |
82f73884 PA |
3690 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3691 | } | |
3692 | ||
74531fed PA |
3693 | static void |
3694 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3695 | enum packet_support support, const char *value) | |
3696 | { | |
3697 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3698 | |
74531fed PA |
3699 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3700 | } | |
3701 | ||
782b2b07 SS |
3702 | static void |
3703 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3704 | enum packet_support support, | |
3705 | const char *value) | |
3706 | { | |
3707 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3708 | |
782b2b07 SS |
3709 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3710 | } | |
3711 | ||
3788aec7 LM |
3712 | static void |
3713 | remote_cond_breakpoint_feature (const struct protocol_feature *feature, | |
3714 | enum packet_support support, | |
3715 | const char *value) | |
3716 | { | |
3717 | struct remote_state *rs = get_remote_state (); | |
3718 | ||
3719 | rs->cond_breakpoints = (support == PACKET_ENABLE); | |
3720 | } | |
3721 | ||
7a697b8d SS |
3722 | static void |
3723 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3724 | enum packet_support support, | |
3725 | const char *value) | |
3726 | { | |
3727 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3728 | |
7a697b8d SS |
3729 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3730 | } | |
3731 | ||
0fb4aa4b PA |
3732 | static void |
3733 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3734 | enum packet_support support, | |
3735 | const char *value) | |
3736 | { | |
3737 | struct remote_state *rs = get_remote_state (); | |
3738 | ||
3739 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3740 | } | |
3741 | ||
1e4d1764 YQ |
3742 | static void |
3743 | remote_install_in_trace_feature (const struct protocol_feature *feature, | |
3744 | enum packet_support support, | |
3745 | const char *value) | |
3746 | { | |
3747 | struct remote_state *rs = get_remote_state (); | |
3748 | ||
3749 | rs->install_in_trace = (support == PACKET_ENABLE); | |
3750 | } | |
3751 | ||
d5551862 SS |
3752 | static void |
3753 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3754 | enum packet_support support, | |
3755 | const char *value) | |
3756 | { | |
3757 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3758 | |
d5551862 SS |
3759 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3760 | } | |
3761 | ||
d248b706 KY |
3762 | static void |
3763 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3764 | enum packet_support support, | |
3765 | const char *value) | |
3766 | { | |
3767 | struct remote_state *rs = get_remote_state (); | |
3768 | ||
3769 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3770 | } | |
3771 | ||
3065dfb6 SS |
3772 | static void |
3773 | remote_string_tracing_feature (const struct protocol_feature *feature, | |
3774 | enum packet_support support, | |
3775 | const char *value) | |
3776 | { | |
3777 | struct remote_state *rs = get_remote_state (); | |
3778 | ||
3779 | rs->string_tracing = (support == PACKET_ENABLE); | |
3780 | } | |
3781 | ||
be2a5f71 | 3782 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3783 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3784 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3785 | PACKET_qXfer_auxv }, |
23181151 DJ |
3786 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3787 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3788 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3789 | PACKET_qXfer_libraries }, | |
2268b414 JK |
3790 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
3791 | PACKET_qXfer_libraries_svr4 }, | |
fd79ecee | 3792 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3793 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3794 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3795 | PACKET_qXfer_spu_read }, | |
3796 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3797 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3798 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3799 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3800 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3801 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3802 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3803 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3804 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3805 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3806 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3807 | PACKET_QStartNoAckMode }, | |
82f73884 | 3808 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3809 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3810 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3811 | PACKET_qXfer_siginfo_read }, | |
3812 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3813 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3814 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3815 | PACKET_ConditionalTracepoints }, | |
3788aec7 LM |
3816 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_cond_breakpoint_feature, |
3817 | PACKET_ConditionalBreakpoints }, | |
7a697b8d SS |
3818 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3819 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3820 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3821 | PACKET_StaticTracepoints }, | |
1e4d1764 YQ |
3822 | {"InstallInTrace", PACKET_DISABLE, remote_install_in_trace_feature, |
3823 | PACKET_InstallInTrace}, | |
d5551862 SS |
3824 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3825 | -1 }, | |
40ab02ce MS |
3826 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3827 | PACKET_bc }, | |
3828 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3829 | PACKET_bs }, | |
409873ef SS |
3830 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3831 | PACKET_TracepointSource }, | |
d914c394 SS |
3832 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3833 | PACKET_QAllow }, | |
d248b706 KY |
3834 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3835 | remote_enable_disable_tracepoint_feature, -1 }, | |
78d85199 YQ |
3836 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
3837 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
3838 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
3839 | PACKET_qXfer_uib }, | |
03583c20 UW |
3840 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
3841 | PACKET_QDisableRandomization }, | |
d1feda86 | 3842 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
3065dfb6 SS |
3843 | { "tracenz", PACKET_DISABLE, |
3844 | remote_string_tracing_feature, -1 }, | |
be2a5f71 DJ |
3845 | }; |
3846 | ||
c8d5aac9 L |
3847 | static char *remote_support_xml; |
3848 | ||
3849 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3850 | ||
3851 | void | |
6e39997a | 3852 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3853 | { |
3854 | #if defined(HAVE_LIBEXPAT) | |
3855 | if (remote_support_xml == NULL) | |
c4f7c687 | 3856 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3857 | else |
3858 | { | |
3859 | char *copy = xstrdup (remote_support_xml + 13); | |
3860 | char *p = strtok (copy, ","); | |
3861 | ||
3862 | do | |
3863 | { | |
3864 | if (strcmp (p, xml) == 0) | |
3865 | { | |
3866 | /* already there */ | |
3867 | xfree (copy); | |
3868 | return; | |
3869 | } | |
3870 | } | |
3871 | while ((p = strtok (NULL, ",")) != NULL); | |
3872 | xfree (copy); | |
3873 | ||
94b0dee1 PA |
3874 | remote_support_xml = reconcat (remote_support_xml, |
3875 | remote_support_xml, ",", xml, | |
3876 | (char *) NULL); | |
c8d5aac9 L |
3877 | } |
3878 | #endif | |
3879 | } | |
3880 | ||
3881 | static char * | |
3882 | remote_query_supported_append (char *msg, const char *append) | |
3883 | { | |
3884 | if (msg) | |
94b0dee1 | 3885 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3886 | else |
3887 | return xstrdup (append); | |
3888 | } | |
3889 | ||
be2a5f71 DJ |
3890 | static void |
3891 | remote_query_supported (void) | |
3892 | { | |
3893 | struct remote_state *rs = get_remote_state (); | |
3894 | char *next; | |
3895 | int i; | |
3896 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3897 | ||
3898 | /* The packet support flags are handled differently for this packet | |
3899 | than for most others. We treat an error, a disabled packet, and | |
3900 | an empty response identically: any features which must be reported | |
3901 | to be used will be automatically disabled. An empty buffer | |
3902 | accomplishes this, since that is also the representation for a list | |
3903 | containing no features. */ | |
3904 | ||
3905 | rs->buf[0] = 0; | |
3906 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3907 | { | |
c8d5aac9 | 3908 | char *q = NULL; |
94b0dee1 | 3909 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 | 3910 | |
901f9912 | 3911 | q = remote_query_supported_append (q, "multiprocess+"); |
c8d5aac9 L |
3912 | |
3913 | if (remote_support_xml) | |
3914 | q = remote_query_supported_append (q, remote_support_xml); | |
3915 | ||
dde08ee1 PA |
3916 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3917 | ||
3918 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3919 | putpkt (q); | |
82f73884 | 3920 | |
94b0dee1 PA |
3921 | do_cleanups (old_chain); |
3922 | ||
be2a5f71 DJ |
3923 | getpkt (&rs->buf, &rs->buf_size, 0); |
3924 | ||
3925 | /* If an error occured, warn, but do not return - just reset the | |
3926 | buffer to empty and go on to disable features. */ | |
3927 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3928 | == PACKET_ERROR) | |
3929 | { | |
3930 | warning (_("Remote failure reply: %s"), rs->buf); | |
3931 | rs->buf[0] = 0; | |
3932 | } | |
3933 | } | |
3934 | ||
3935 | memset (seen, 0, sizeof (seen)); | |
3936 | ||
3937 | next = rs->buf; | |
3938 | while (*next) | |
3939 | { | |
3940 | enum packet_support is_supported; | |
3941 | char *p, *end, *name_end, *value; | |
3942 | ||
3943 | /* First separate out this item from the rest of the packet. If | |
3944 | there's another item after this, we overwrite the separator | |
3945 | (terminated strings are much easier to work with). */ | |
3946 | p = next; | |
3947 | end = strchr (p, ';'); | |
3948 | if (end == NULL) | |
3949 | { | |
3950 | end = p + strlen (p); | |
3951 | next = end; | |
3952 | } | |
3953 | else | |
3954 | { | |
89be2091 DJ |
3955 | *end = '\0'; |
3956 | next = end + 1; | |
3957 | ||
be2a5f71 DJ |
3958 | if (end == p) |
3959 | { | |
3960 | warning (_("empty item in \"qSupported\" response")); | |
3961 | continue; | |
3962 | } | |
be2a5f71 DJ |
3963 | } |
3964 | ||
3965 | name_end = strchr (p, '='); | |
3966 | if (name_end) | |
3967 | { | |
3968 | /* This is a name=value entry. */ | |
3969 | is_supported = PACKET_ENABLE; | |
3970 | value = name_end + 1; | |
3971 | *name_end = '\0'; | |
3972 | } | |
3973 | else | |
3974 | { | |
3975 | value = NULL; | |
3976 | switch (end[-1]) | |
3977 | { | |
3978 | case '+': | |
3979 | is_supported = PACKET_ENABLE; | |
3980 | break; | |
3981 | ||
3982 | case '-': | |
3983 | is_supported = PACKET_DISABLE; | |
3984 | break; | |
3985 | ||
3986 | case '?': | |
3987 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3988 | break; | |
3989 | ||
3990 | default: | |
3e43a32a MS |
3991 | warning (_("unrecognized item \"%s\" " |
3992 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
3993 | continue; |
3994 | } | |
3995 | end[-1] = '\0'; | |
3996 | } | |
3997 | ||
3998 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3999 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
4000 | { | |
4001 | const struct protocol_feature *feature; | |
4002 | ||
4003 | seen[i] = 1; | |
4004 | feature = &remote_protocol_features[i]; | |
4005 | feature->func (feature, is_supported, value); | |
4006 | break; | |
4007 | } | |
4008 | } | |
4009 | ||
4010 | /* If we increased the packet size, make sure to increase the global | |
4011 | buffer size also. We delay this until after parsing the entire | |
4012 | qSupported packet, because this is the same buffer we were | |
4013 | parsing. */ | |
4014 | if (rs->buf_size < rs->explicit_packet_size) | |
4015 | { | |
4016 | rs->buf_size = rs->explicit_packet_size; | |
4017 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
4018 | } | |
4019 | ||
4020 | /* Handle the defaults for unmentioned features. */ | |
4021 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
4022 | if (!seen[i]) | |
4023 | { | |
4024 | const struct protocol_feature *feature; | |
4025 | ||
4026 | feature = &remote_protocol_features[i]; | |
4027 | feature->func (feature, feature->default_support, NULL); | |
4028 | } | |
4029 | } | |
4030 | ||
4031 | ||
c906108c | 4032 | static void |
3e43a32a MS |
4033 | remote_open_1 (char *name, int from_tty, |
4034 | struct target_ops *target, int extended_p) | |
c906108c | 4035 | { |
d01949b6 | 4036 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 4037 | |
c906108c | 4038 | if (name == 0) |
8a3fe4f8 | 4039 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 4040 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 4041 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 4042 | |
23860348 | 4043 | /* See FIXME above. */ |
c6ebd6cf | 4044 | if (!target_async_permitted) |
92d1e331 | 4045 | wait_forever_enabled_p = 1; |
6426a772 | 4046 | |
2d717e4f DJ |
4047 | /* If we're connected to a running target, target_preopen will kill it. |
4048 | But if we're connected to a target system with no running process, | |
4049 | then we will still be connected when it returns. Ask this question | |
4050 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 4051 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4052 | { |
4053 | if (!from_tty | |
4054 | || query (_("Already connected to a remote target. Disconnect? "))) | |
4055 | pop_target (); | |
4056 | else | |
4057 | error (_("Still connected.")); | |
4058 | } | |
4059 | ||
c906108c SS |
4060 | target_preopen (from_tty); |
4061 | ||
4062 | unpush_target (target); | |
4063 | ||
2d717e4f DJ |
4064 | /* This time without a query. If we were connected to an |
4065 | extended-remote target and target_preopen killed the running | |
4066 | process, we may still be connected. If we are starting "target | |
4067 | remote" now, the extended-remote target will not have been | |
4068 | removed by unpush_target. */ | |
c35b1492 | 4069 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
4070 | pop_target (); |
4071 | ||
89be2091 DJ |
4072 | /* Make sure we send the passed signals list the next time we resume. */ |
4073 | xfree (last_pass_packet); | |
4074 | last_pass_packet = NULL; | |
4075 | ||
ad9a8f3f | 4076 | remote_fileio_reset (); |
1dd41f16 NS |
4077 | reopen_exec_file (); |
4078 | reread_symbols (); | |
4079 | ||
9db8d71f | 4080 | remote_desc = remote_serial_open (name); |
c906108c SS |
4081 | if (!remote_desc) |
4082 | perror_with_name (name); | |
4083 | ||
4084 | if (baud_rate != -1) | |
4085 | { | |
2cd58942 | 4086 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4087 | { |
9b74d5d3 KB |
4088 | /* The requested speed could not be set. Error out to |
4089 | top level after closing remote_desc. Take care to | |
4090 | set remote_desc to NULL to avoid closing remote_desc | |
4091 | more than once. */ | |
2cd58942 | 4092 | serial_close (remote_desc); |
9b74d5d3 | 4093 | remote_desc = NULL; |
c906108c SS |
4094 | perror_with_name (name); |
4095 | } | |
4096 | } | |
4097 | ||
2cd58942 | 4098 | serial_raw (remote_desc); |
c906108c SS |
4099 | |
4100 | /* If there is something sitting in the buffer we might take it as a | |
4101 | response to a command, which would be bad. */ | |
2cd58942 | 4102 | serial_flush_input (remote_desc); |
c906108c SS |
4103 | |
4104 | if (from_tty) | |
4105 | { | |
4106 | puts_filtered ("Remote debugging using "); | |
4107 | puts_filtered (name); | |
4108 | puts_filtered ("\n"); | |
4109 | } | |
23860348 | 4110 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4111 | |
74531fed PA |
4112 | /* Register extra event sources in the event loop. */ |
4113 | remote_async_inferior_event_token | |
4114 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4115 | NULL); | |
4116 | remote_async_get_pending_events_token | |
4117 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4118 | NULL); | |
4119 | ||
be2a5f71 DJ |
4120 | /* Reset the target state; these things will be queried either by |
4121 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4122 | init_all_packet_configs (); |
74531fed | 4123 | rs->cached_wait_status = 0; |
be2a5f71 | 4124 | rs->explicit_packet_size = 0; |
a6f3e723 | 4125 | rs->noack_mode = 0; |
82f73884 PA |
4126 | rs->multi_process_aware = 0; |
4127 | rs->extended = extended_p; | |
74531fed | 4128 | rs->non_stop_aware = 0; |
e24a49d8 | 4129 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4130 | rs->ctrlc_pending_p = 0; |
802188a7 | 4131 | |
79d7f229 PA |
4132 | general_thread = not_sent_ptid; |
4133 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4134 | remote_traceframe_number = -1; |
c906108c | 4135 | |
9d1f7ab2 MS |
4136 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4137 | use_threadinfo_query = 1; | |
4138 | use_threadextra_query = 1; | |
4139 | ||
c6ebd6cf | 4140 | if (target_async_permitted) |
92d1e331 | 4141 | { |
23860348 | 4142 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4143 | remote_async_terminal_ours_p = 1; |
4144 | ||
4145 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4146 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4147 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4148 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4149 | around this. Eventually a mechanism that allows |
92d1e331 | 4150 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4151 | implemented. */ |
92d1e331 DJ |
4152 | wait_forever_enabled_p = 0; |
4153 | } | |
4154 | ||
23860348 | 4155 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4156 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4157 | |
74531fed PA |
4158 | /* Start afresh. */ |
4159 | init_thread_list (); | |
4160 | ||
36918e70 | 4161 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4162 | target (we'd otherwise be in an inconsistent state) and then |
4163 | propogate the error on up the exception chain. This ensures that | |
4164 | the caller doesn't stumble along blindly assuming that the | |
4165 | function succeeded. The CLI doesn't have this problem but other | |
4166 | UI's, such as MI do. | |
36918e70 AC |
4167 | |
4168 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4169 | this function should return an error indication letting the | |
ce2826aa | 4170 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4171 | ``target remote'' is directly wired to this function making that |
4172 | impossible. On a positive note, the CLI side of this problem has | |
4173 | been fixed - the function set_cmd_context() makes it possible for | |
4174 | all the ``target ....'' commands to share a common callback | |
4175 | function. See cli-dump.c. */ | |
109c3e39 | 4176 | { |
04bd08de | 4177 | volatile struct gdb_exception ex; |
2d717e4f | 4178 | |
04bd08de TT |
4179 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4180 | { | |
4181 | remote_start_remote (from_tty, target, extended_p); | |
4182 | } | |
109c3e39 AC |
4183 | if (ex.reason < 0) |
4184 | { | |
c8d104ad PA |
4185 | /* Pop the partially set up target - unless something else did |
4186 | already before throwing the exception. */ | |
4187 | if (remote_desc != NULL) | |
4188 | pop_target (); | |
c6ebd6cf | 4189 | if (target_async_permitted) |
109c3e39 AC |
4190 | wait_forever_enabled_p = 1; |
4191 | throw_exception (ex); | |
4192 | } | |
4193 | } | |
c906108c | 4194 | |
c6ebd6cf | 4195 | if (target_async_permitted) |
92d1e331 | 4196 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4197 | } |
4198 | ||
c906108c SS |
4199 | /* This takes a program previously attached to and detaches it. After |
4200 | this is done, GDB can be used to debug some other program. We | |
4201 | better not have left any breakpoints in the target program or it'll | |
4202 | die when it hits one. */ | |
4203 | ||
4204 | static void | |
2d717e4f | 4205 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4206 | { |
82f73884 | 4207 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4208 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4209 | |
4210 | if (args) | |
8a3fe4f8 | 4211 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4212 | |
2d717e4f DJ |
4213 | if (!target_has_execution) |
4214 | error (_("No process to detach from.")); | |
4215 | ||
7cee1e54 PA |
4216 | if (from_tty) |
4217 | { | |
4218 | char *exec_file = get_exec_file (0); | |
4219 | if (exec_file == NULL) | |
4220 | exec_file = ""; | |
4221 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, | |
4222 | target_pid_to_str (pid_to_ptid (pid))); | |
4223 | gdb_flush (gdb_stdout); | |
4224 | } | |
4225 | ||
c906108c | 4226 | /* Tell the remote target to detach. */ |
82f73884 PA |
4227 | if (remote_multi_process_p (rs)) |
4228 | sprintf (rs->buf, "D;%x", pid); | |
4229 | else | |
4230 | strcpy (rs->buf, "D"); | |
4231 | ||
4ddda9b5 PA |
4232 | putpkt (rs->buf); |
4233 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4234 | ||
82f73884 PA |
4235 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4236 | ; | |
4237 | else if (rs->buf[0] == '\0') | |
4238 | error (_("Remote doesn't know how to detach")); | |
4239 | else | |
4ddda9b5 | 4240 | error (_("Can't detach process.")); |
c906108c | 4241 | |
7cee1e54 PA |
4242 | if (from_tty && !extended) |
4243 | puts_filtered (_("Ending remote debugging.\n")); | |
82f73884 | 4244 | |
74531fed | 4245 | discard_pending_stop_replies (pid); |
82f73884 | 4246 | target_mourn_inferior (); |
2d717e4f DJ |
4247 | } |
4248 | ||
4249 | static void | |
136d6dae | 4250 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4251 | { |
4252 | remote_detach_1 (args, from_tty, 0); | |
4253 | } | |
4254 | ||
4255 | static void | |
136d6dae | 4256 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4257 | { |
4258 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4259 | } |
4260 | ||
6ad8ae5c DJ |
4261 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4262 | ||
43ff13b4 | 4263 | static void |
597320e7 | 4264 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4265 | { |
43ff13b4 | 4266 | if (args) |
2d717e4f | 4267 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4268 | |
2d717e4f DJ |
4269 | /* Make sure we unpush even the extended remote targets; mourn |
4270 | won't do it. So call remote_mourn_1 directly instead of | |
4271 | target_mourn_inferior. */ | |
4272 | remote_mourn_1 (target); | |
4273 | ||
43ff13b4 JM |
4274 | if (from_tty) |
4275 | puts_filtered ("Ending remote debugging.\n"); | |
4276 | } | |
4277 | ||
2d717e4f DJ |
4278 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4279 | be chatty about it. */ | |
4280 | ||
4281 | static void | |
4282 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4283 | { | |
4284 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4285 | int pid; |
96ef3384 | 4286 | char *wait_status = NULL; |
2d717e4f | 4287 | |
74164c56 | 4288 | pid = parse_pid_to_attach (args); |
2d717e4f | 4289 | |
74164c56 JK |
4290 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4291 | way as in other targets. */ | |
2d717e4f DJ |
4292 | |
4293 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4294 | error (_("This target does not support attaching to a process")); | |
4295 | ||
7cee1e54 PA |
4296 | if (from_tty) |
4297 | { | |
4298 | char *exec_file = get_exec_file (0); | |
4299 | ||
4300 | if (exec_file) | |
4301 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
4302 | target_pid_to_str (pid_to_ptid (pid))); | |
4303 | else | |
4304 | printf_unfiltered (_("Attaching to %s\n"), | |
4305 | target_pid_to_str (pid_to_ptid (pid))); | |
4306 | ||
4307 | gdb_flush (gdb_stdout); | |
4308 | } | |
4309 | ||
2d717e4f DJ |
4310 | sprintf (rs->buf, "vAttach;%x", pid); |
4311 | putpkt (rs->buf); | |
4312 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4313 | ||
3e43a32a MS |
4314 | if (packet_ok (rs->buf, |
4315 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f | 4316 | { |
74531fed PA |
4317 | if (!non_stop) |
4318 | { | |
4319 | /* Save the reply for later. */ | |
4320 | wait_status = alloca (strlen (rs->buf) + 1); | |
4321 | strcpy (wait_status, rs->buf); | |
4322 | } | |
4323 | else if (strcmp (rs->buf, "OK") != 0) | |
4324 | error (_("Attaching to %s failed with: %s"), | |
4325 | target_pid_to_str (pid_to_ptid (pid)), | |
4326 | rs->buf); | |
2d717e4f DJ |
4327 | } |
4328 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4329 | error (_("This target does not support attaching to a process")); | |
4330 | else | |
4331 | error (_("Attaching to %s failed"), | |
4332 | target_pid_to_str (pid_to_ptid (pid))); | |
4333 | ||
49c62f2e | 4334 | set_current_inferior (remote_add_inferior (0, pid, 1)); |
bad34192 | 4335 | |
2d717e4f | 4336 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4337 | |
bad34192 PA |
4338 | if (non_stop) |
4339 | { | |
4340 | struct thread_info *thread; | |
79d7f229 | 4341 | |
bad34192 PA |
4342 | /* Get list of threads. */ |
4343 | remote_threads_info (target); | |
82f73884 | 4344 | |
bad34192 PA |
4345 | thread = first_thread_of_process (pid); |
4346 | if (thread) | |
4347 | inferior_ptid = thread->ptid; | |
4348 | else | |
4349 | inferior_ptid = pid_to_ptid (pid); | |
4350 | ||
4351 | /* Invalidate our notion of the remote current thread. */ | |
4352 | record_currthread (minus_one_ptid); | |
4353 | } | |
74531fed | 4354 | else |
bad34192 PA |
4355 | { |
4356 | /* Now, if we have thread information, update inferior_ptid. */ | |
4357 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4358 | ||
4359 | /* Add the main thread to the thread list. */ | |
4360 | add_thread_silent (inferior_ptid); | |
4361 | } | |
c0a2216e | 4362 | |
96ef3384 UW |
4363 | /* Next, if the target can specify a description, read it. We do |
4364 | this before anything involving memory or registers. */ | |
4365 | target_find_description (); | |
4366 | ||
74531fed PA |
4367 | if (!non_stop) |
4368 | { | |
4369 | /* Use the previously fetched status. */ | |
4370 | gdb_assert (wait_status != NULL); | |
4371 | ||
4372 | if (target_can_async_p ()) | |
4373 | { | |
4374 | struct stop_reply *stop_reply; | |
4375 | struct cleanup *old_chain; | |
4376 | ||
4377 | stop_reply = stop_reply_xmalloc (); | |
4378 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4379 | remote_parse_stop_reply (wait_status, stop_reply); | |
4380 | discard_cleanups (old_chain); | |
4381 | push_stop_reply (stop_reply); | |
4382 | ||
4383 | target_async (inferior_event_handler, 0); | |
4384 | } | |
4385 | else | |
4386 | { | |
4387 | gdb_assert (wait_status != NULL); | |
4388 | strcpy (rs->buf, wait_status); | |
4389 | rs->cached_wait_status = 1; | |
4390 | } | |
4391 | } | |
4392 | else | |
4393 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4394 | } |
4395 | ||
4396 | static void | |
136d6dae | 4397 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4398 | { |
136d6dae | 4399 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4400 | } |
4401 | ||
c906108c SS |
4402 | /* Convert hex digit A to a number. */ |
4403 | ||
30559e10 | 4404 | static int |
fba45db2 | 4405 | fromhex (int a) |
c906108c SS |
4406 | { |
4407 | if (a >= '0' && a <= '9') | |
4408 | return a - '0'; | |
4409 | else if (a >= 'a' && a <= 'f') | |
4410 | return a - 'a' + 10; | |
4411 | else if (a >= 'A' && a <= 'F') | |
4412 | return a - 'A' + 10; | |
c5aa993b | 4413 | else |
8a3fe4f8 | 4414 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4415 | } |
4416 | ||
00bf0b85 | 4417 | int |
cfd77fa1 | 4418 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4419 | { |
4420 | int i; | |
4421 | ||
30559e10 MS |
4422 | for (i = 0; i < count; i++) |
4423 | { | |
4424 | if (hex[0] == 0 || hex[1] == 0) | |
4425 | { | |
4426 | /* Hex string is short, or of uneven length. | |
23860348 | 4427 | Return the count that has been converted so far. */ |
30559e10 MS |
4428 | return i; |
4429 | } | |
4430 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4431 | hex += 2; | |
4432 | } | |
4433 | return i; | |
4434 | } | |
4435 | ||
c906108c SS |
4436 | /* Convert number NIB to a hex digit. */ |
4437 | ||
4438 | static int | |
fba45db2 | 4439 | tohex (int nib) |
c906108c SS |
4440 | { |
4441 | if (nib < 10) | |
c5aa993b | 4442 | return '0' + nib; |
c906108c | 4443 | else |
c5aa993b | 4444 | return 'a' + nib - 10; |
c906108c | 4445 | } |
30559e10 | 4446 | |
00bf0b85 | 4447 | int |
cfd77fa1 | 4448 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4449 | { |
4450 | int i; | |
a744cf53 | 4451 | |
23860348 | 4452 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4453 | if (count == 0) |
cfd77fa1 | 4454 | count = strlen ((char *) bin); |
30559e10 MS |
4455 | |
4456 | for (i = 0; i < count; i++) | |
4457 | { | |
4458 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4459 | *hex++ = tohex (*bin++ & 0xf); | |
4460 | } | |
4461 | *hex = 0; | |
4462 | return i; | |
4463 | } | |
c906108c | 4464 | \f |
506fb367 DJ |
4465 | /* Check for the availability of vCont. This function should also check |
4466 | the response. */ | |
c906108c SS |
4467 | |
4468 | static void | |
6d820c5c | 4469 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4470 | { |
2e9f7625 | 4471 | char *buf; |
6d820c5c | 4472 | |
2e9f7625 DJ |
4473 | strcpy (rs->buf, "vCont?"); |
4474 | putpkt (rs->buf); | |
6d820c5c | 4475 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4476 | buf = rs->buf; |
c906108c | 4477 | |
506fb367 DJ |
4478 | /* Make sure that the features we assume are supported. */ |
4479 | if (strncmp (buf, "vCont", 5) == 0) | |
4480 | { | |
4481 | char *p = &buf[5]; | |
4482 | int support_s, support_S, support_c, support_C; | |
4483 | ||
4484 | support_s = 0; | |
4485 | support_S = 0; | |
4486 | support_c = 0; | |
4487 | support_C = 0; | |
74531fed | 4488 | rs->support_vCont_t = 0; |
506fb367 DJ |
4489 | while (p && *p == ';') |
4490 | { | |
4491 | p++; | |
4492 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4493 | support_s = 1; | |
4494 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4495 | support_S = 1; | |
4496 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4497 | support_c = 1; | |
4498 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4499 | support_C = 1; | |
74531fed PA |
4500 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4501 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4502 | |
4503 | p = strchr (p, ';'); | |
4504 | } | |
c906108c | 4505 | |
506fb367 DJ |
4506 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4507 | BUF will make packet_ok disable the packet. */ | |
4508 | if (!support_s || !support_S || !support_c || !support_C) | |
4509 | buf[0] = 0; | |
4510 | } | |
c906108c | 4511 | |
444abaca | 4512 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4513 | } |
c906108c | 4514 | |
0d8f58ca PA |
4515 | /* Helper function for building "vCont" resumptions. Write a |
4516 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4517 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4518 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4519 | resumed thread should be single-stepped and/or signalled. If PTID | |
4520 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4521 | represents a process, then all threads of the process are resumed; | |
4522 | the thread to be stepped and/or signalled is given in the global | |
4523 | INFERIOR_PTID. */ | |
4524 | ||
4525 | static char * | |
4526 | append_resumption (char *p, char *endp, | |
4527 | ptid_t ptid, int step, enum target_signal siggnal) | |
4528 | { | |
4529 | struct remote_state *rs = get_remote_state (); | |
4530 | ||
4531 | if (step && siggnal != TARGET_SIGNAL_0) | |
4532 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4533 | else if (step) | |
4534 | p += xsnprintf (p, endp - p, ";s"); | |
4535 | else if (siggnal != TARGET_SIGNAL_0) | |
4536 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4537 | else | |
4538 | p += xsnprintf (p, endp - p, ";c"); | |
4539 | ||
4540 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4541 | { | |
4542 | ptid_t nptid; | |
4543 | ||
4544 | /* All (-1) threads of process. */ | |
4545 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4546 | ||
4547 | p += xsnprintf (p, endp - p, ":"); | |
4548 | p = write_ptid (p, endp, nptid); | |
4549 | } | |
4550 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4551 | { | |
4552 | p += xsnprintf (p, endp - p, ":"); | |
4553 | p = write_ptid (p, endp, ptid); | |
4554 | } | |
4555 | ||
4556 | return p; | |
4557 | } | |
4558 | ||
506fb367 DJ |
4559 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4560 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4561 | resumed thread should be single-stepped and/or signalled. If PTID |
4562 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4563 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4564 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4565 | |
506fb367 DJ |
4566 | This function issues a strict subset of all possible vCont commands at the |
4567 | moment. */ | |
44eaed12 | 4568 | |
506fb367 DJ |
4569 | static int |
4570 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4571 | { | |
4572 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4573 | char *p; |
4574 | char *endp; | |
44eaed12 | 4575 | |
444abaca | 4576 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4577 | remote_vcont_probe (rs); |
44eaed12 | 4578 | |
444abaca | 4579 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4580 | return 0; |
44eaed12 | 4581 | |
82f73884 PA |
4582 | p = rs->buf; |
4583 | endp = rs->buf + get_remote_packet_size (); | |
4584 | ||
506fb367 DJ |
4585 | /* If we could generate a wider range of packets, we'd have to worry |
4586 | about overflowing BUF. Should there be a generic | |
4587 | "multi-part-packet" packet? */ | |
4588 | ||
0d8f58ca PA |
4589 | p += xsnprintf (p, endp - p, "vCont"); |
4590 | ||
79d7f229 | 4591 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4592 | { |
79d7f229 PA |
4593 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4594 | so we don't have any TID numbers the inferior will | |
4595 | understand. Make sure to only send forms that do not specify | |
4596 | a TID. */ | |
a9cbf802 | 4597 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4598 | } |
0d8f58ca | 4599 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4600 | { |
0d8f58ca PA |
4601 | /* Resume all threads (of all processes, or of a single |
4602 | process), with preference for INFERIOR_PTID. This assumes | |
4603 | inferior_ptid belongs to the set of all threads we are about | |
4604 | to resume. */ | |
4605 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4606 | { |
0d8f58ca PA |
4607 | /* Step inferior_ptid, with or without signal. */ |
4608 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4609 | } |
0d8f58ca PA |
4610 | |
4611 | /* And continue others without a signal. */ | |
a9cbf802 | 4612 | append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); |
c906108c SS |
4613 | } |
4614 | else | |
506fb367 DJ |
4615 | { |
4616 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4617 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4618 | } |
c906108c | 4619 | |
82f73884 PA |
4620 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4621 | putpkt (rs->buf); | |
506fb367 | 4622 | |
74531fed PA |
4623 | if (non_stop) |
4624 | { | |
4625 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4626 | reply will be reported asynchronously by means of a `%Stop' | |
4627 | notification. */ | |
4628 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4629 | if (strcmp (rs->buf, "OK") != 0) | |
4630 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4631 | } | |
4632 | ||
506fb367 | 4633 | return 1; |
c906108c | 4634 | } |
43ff13b4 | 4635 | |
506fb367 DJ |
4636 | /* Tell the remote machine to resume. */ |
4637 | ||
4638 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4639 | ||
4640 | static int last_sent_step; | |
4641 | ||
43ff13b4 | 4642 | static void |
28439f5e PA |
4643 | remote_resume (struct target_ops *ops, |
4644 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4645 | { |
d01949b6 | 4646 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4647 | char *buf; |
43ff13b4 | 4648 | |
43ff13b4 JM |
4649 | last_sent_signal = siggnal; |
4650 | last_sent_step = step; | |
4651 | ||
506fb367 | 4652 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4653 | /* No reverse support (yet) for vCont. */ |
4654 | if (execution_direction != EXEC_REVERSE) | |
4655 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4656 | goto done; | |
506fb367 | 4657 | |
79d7f229 PA |
4658 | /* All other supported resume packets do use Hc, so set the continue |
4659 | thread. */ | |
4660 | if (ptid_equal (ptid, minus_one_ptid)) | |
4661 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4662 | else |
79d7f229 | 4663 | set_continue_thread (ptid); |
506fb367 | 4664 | |
2e9f7625 | 4665 | buf = rs->buf; |
b2175913 MS |
4666 | if (execution_direction == EXEC_REVERSE) |
4667 | { | |
4668 | /* We don't pass signals to the target in reverse exec mode. */ | |
4669 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
7ea6d463 | 4670 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4671 | siggnal); |
40ab02ce MS |
4672 | |
4673 | if (step | |
4674 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4675 | error (_("Remote reverse-step not supported.")); | |
4676 | if (!step | |
4677 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4678 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4679 | |
b2175913 MS |
4680 | strcpy (buf, step ? "bs" : "bc"); |
4681 | } | |
4682 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4683 | { |
4684 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4685 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4686 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4687 | buf[3] = '\0'; |
4688 | } | |
4689 | else | |
c5aa993b | 4690 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4691 | |
44eaed12 | 4692 | putpkt (buf); |
43ff13b4 | 4693 | |
75c99385 | 4694 | done: |
2acceee2 | 4695 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4696 | with the event loop. NOTE: this is the one place where all the |
4697 | execution commands end up. We could alternatively do this in each | |
23860348 | 4698 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4699 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4700 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4701 | NOT asynchronously. */ |
362646f5 | 4702 | if (target_can_async_p ()) |
2acceee2 | 4703 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4704 | |
4705 | /* We've just told the target to resume. The remote server will | |
4706 | wait for the inferior to stop, and then send a stop reply. In | |
4707 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4708 | because the stub wouldn't be ready to process it. This applies |
4709 | only to the base all-stop protocol, however. In non-stop (which | |
4710 | only supports vCont), the stub replies with an "OK", and is | |
4711 | immediate able to process further serial input. */ | |
4712 | if (!non_stop) | |
4713 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4714 | } |
c906108c | 4715 | \f |
43ff13b4 JM |
4716 | |
4717 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4718 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4719 | static void |
fba45db2 | 4720 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4721 | { |
43ff13b4 JM |
4722 | signal (SIGINT, handle_remote_sigint); |
4723 | } | |
4724 | ||
23860348 | 4725 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4726 | static void |
fba45db2 | 4727 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4728 | { |
4729 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4730 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4731 | } | |
4732 | ||
4733 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4734 | sent once. It will take effect the second time that the user sends | |
23860348 | 4735 | a ^C. */ |
43ff13b4 | 4736 | static void |
fba45db2 | 4737 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4738 | { |
b803fb0f | 4739 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4740 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4741 | } | |
4742 | ||
6426a772 | 4743 | /* Perform the real interruption of the target execution, in response |
23860348 | 4744 | to a ^C. */ |
c5aa993b | 4745 | static void |
fba45db2 | 4746 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4747 | { |
4748 | if (remote_debug) | |
4749 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4750 | ||
94cc34af | 4751 | target_stop (inferior_ptid); |
43ff13b4 JM |
4752 | } |
4753 | ||
0df8b418 | 4754 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4755 | up on the target alltogether. */ |
2df3850c | 4756 | void |
fba45db2 | 4757 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4758 | { |
2df3850c JM |
4759 | if (remote_debug) |
4760 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4761 | |
4762 | interrupt_query (); | |
43ff13b4 JM |
4763 | } |
4764 | ||
4765 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4766 | stopped. */ |
6426a772 JM |
4767 | static void |
4768 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4769 | { |
4770 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4771 | } |
4772 | ||
c906108c SS |
4773 | /* Send ^C to target to halt it. Target will respond, and send us a |
4774 | packet. */ | |
507f3c78 | 4775 | static void (*ofunc) (int); |
c906108c | 4776 | |
0df8b418 MS |
4777 | /* The command line interface's stop routine. This function is installed |
4778 | as a signal handler for SIGINT. The first time a user requests a | |
4779 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4780 | response from the target (it didn't stop when the user requested it), |
23860348 | 4781 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4782 | static void |
fba45db2 | 4783 | remote_interrupt (int signo) |
c906108c | 4784 | { |
23860348 | 4785 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4786 | signal (signo, remote_interrupt_twice); |
4787 | ||
b803fb0f | 4788 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4789 | } |
4790 | ||
4791 | /* The user typed ^C twice. */ | |
4792 | ||
4793 | static void | |
fba45db2 | 4794 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4795 | { |
4796 | signal (signo, ofunc); | |
b803fb0f | 4797 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4798 | signal (signo, remote_interrupt); |
4799 | } | |
7a292a7a | 4800 | |
74531fed PA |
4801 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4802 | thread, all threads of a remote process, or all threads of all | |
4803 | processes. */ | |
4804 | ||
4805 | static void | |
4806 | remote_stop_ns (ptid_t ptid) | |
4807 | { | |
4808 | struct remote_state *rs = get_remote_state (); | |
4809 | char *p = rs->buf; | |
4810 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4811 | |
4812 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4813 | remote_vcont_probe (rs); | |
4814 | ||
4815 | if (!rs->support_vCont_t) | |
4816 | error (_("Remote server does not support stopping threads")); | |
4817 | ||
f91d3df5 PA |
4818 | if (ptid_equal (ptid, minus_one_ptid) |
4819 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4820 | p += xsnprintf (p, endp - p, "vCont;t"); |
4821 | else | |
4822 | { | |
4823 | ptid_t nptid; | |
4824 | ||
74531fed PA |
4825 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4826 | ||
4827 | if (ptid_is_pid (ptid)) | |
4828 | /* All (-1) threads of process. */ | |
4829 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4830 | else | |
4831 | { | |
4832 | /* Small optimization: if we already have a stop reply for | |
4833 | this thread, no use in telling the stub we want this | |
4834 | stopped. */ | |
4835 | if (peek_stop_reply (ptid)) | |
4836 | return; | |
4837 | ||
4838 | nptid = ptid; | |
4839 | } | |
4840 | ||
a9cbf802 | 4841 | write_ptid (p, endp, nptid); |
74531fed PA |
4842 | } |
4843 | ||
4844 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4845 | come in asynchronously by notification. */ | |
4846 | putpkt (rs->buf); | |
4847 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4848 | if (strcmp (rs->buf, "OK") != 0) | |
4849 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4850 | } | |
4851 | ||
4852 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4853 | remote target. It is undefined which thread of which process | |
4854 | reports the stop. */ | |
4855 | ||
4856 | static void | |
4857 | remote_stop_as (ptid_t ptid) | |
4858 | { | |
4859 | struct remote_state *rs = get_remote_state (); | |
4860 | ||
3a29589a DJ |
4861 | rs->ctrlc_pending_p = 1; |
4862 | ||
74531fed PA |
4863 | /* If the inferior is stopped already, but the core didn't know |
4864 | about it yet, just ignore the request. The cached wait status | |
4865 | will be collected in remote_wait. */ | |
4866 | if (rs->cached_wait_status) | |
4867 | return; | |
4868 | ||
9a7071a8 JB |
4869 | /* Send interrupt_sequence to remote target. */ |
4870 | send_interrupt_sequence (); | |
74531fed PA |
4871 | } |
4872 | ||
0df8b418 | 4873 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4874 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4875 | will eventually end up here. */ |
74531fed | 4876 | |
c906108c | 4877 | static void |
94cc34af | 4878 | remote_stop (ptid_t ptid) |
c906108c | 4879 | { |
7a292a7a | 4880 | if (remote_debug) |
0f71a2f6 | 4881 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4882 | |
74531fed PA |
4883 | if (non_stop) |
4884 | remote_stop_ns (ptid); | |
c906108c | 4885 | else |
74531fed | 4886 | remote_stop_as (ptid); |
c906108c SS |
4887 | } |
4888 | ||
4889 | /* Ask the user what to do when an interrupt is received. */ | |
4890 | ||
4891 | static void | |
fba45db2 | 4892 | interrupt_query (void) |
c906108c SS |
4893 | { |
4894 | target_terminal_ours (); | |
4895 | ||
74531fed | 4896 | if (target_can_async_p ()) |
c906108c | 4897 | { |
74531fed | 4898 | signal (SIGINT, handle_sigint); |
315a522e | 4899 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4900 | } |
74531fed PA |
4901 | else |
4902 | { | |
9e2f0ad4 HZ |
4903 | if (query (_("Interrupted while waiting for the program.\n\ |
4904 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4905 | { |
4906 | pop_target (); | |
4907 | deprecated_throw_reason (RETURN_QUIT); | |
4908 | } | |
4909 | } | |
c906108c SS |
4910 | |
4911 | target_terminal_inferior (); | |
4912 | } | |
4913 | ||
6426a772 JM |
4914 | /* Enable/disable target terminal ownership. Most targets can use |
4915 | terminal groups to control terminal ownership. Remote targets are | |
4916 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4917 | is required. */ |
6426a772 JM |
4918 | |
4919 | static void | |
75c99385 | 4920 | remote_terminal_inferior (void) |
6426a772 | 4921 | { |
c6ebd6cf | 4922 | if (!target_async_permitted) |
75c99385 PA |
4923 | /* Nothing to do. */ |
4924 | return; | |
4925 | ||
d9d2d8b6 PA |
4926 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4927 | idempotent. The event-loop GDB talking to an asynchronous target | |
4928 | with a synchronous command calls this function from both | |
4929 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4930 | transfer the terminal to the target when it shouldn't this guard | |
4931 | can go away. */ | |
6426a772 JM |
4932 | if (!remote_async_terminal_ours_p) |
4933 | return; | |
4934 | delete_file_handler (input_fd); | |
4935 | remote_async_terminal_ours_p = 0; | |
4936 | initialize_sigint_signal_handler (); | |
4937 | /* NOTE: At this point we could also register our selves as the | |
4938 | recipient of all input. Any characters typed could then be | |
23860348 | 4939 | passed on down to the target. */ |
6426a772 JM |
4940 | } |
4941 | ||
4942 | static void | |
75c99385 | 4943 | remote_terminal_ours (void) |
6426a772 | 4944 | { |
c6ebd6cf | 4945 | if (!target_async_permitted) |
75c99385 PA |
4946 | /* Nothing to do. */ |
4947 | return; | |
4948 | ||
4949 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4950 | if (remote_async_terminal_ours_p) |
4951 | return; | |
4952 | cleanup_sigint_signal_handler (NULL); | |
4953 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4954 | remote_async_terminal_ours_p = 1; | |
4955 | } | |
4956 | ||
176a6961 | 4957 | static void |
917317f4 | 4958 | remote_console_output (char *msg) |
c906108c SS |
4959 | { |
4960 | char *p; | |
4961 | ||
c5aa993b | 4962 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4963 | { |
4964 | char tb[2]; | |
4965 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4966 | |
c906108c SS |
4967 | tb[0] = c; |
4968 | tb[1] = 0; | |
43ff13b4 | 4969 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4970 | } |
00db5b94 PA |
4971 | gdb_flush (gdb_stdtarg); |
4972 | } | |
74531fed PA |
4973 | |
4974 | typedef struct cached_reg | |
4975 | { | |
4976 | int num; | |
4977 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4978 | } cached_reg_t; | |
4979 | ||
4980 | DEF_VEC_O(cached_reg_t); | |
4981 | ||
4982 | struct stop_reply | |
4983 | { | |
4984 | struct stop_reply *next; | |
4985 | ||
4986 | ptid_t ptid; | |
4987 | ||
4988 | struct target_waitstatus ws; | |
4989 | ||
15148d6a PA |
4990 | /* Expedited registers. This makes remote debugging a bit more |
4991 | efficient for those targets that provide critical registers as | |
4992 | part of their normal status mechanism (as another roundtrip to | |
4993 | fetch them is avoided). */ | |
74531fed PA |
4994 | VEC(cached_reg_t) *regcache; |
4995 | ||
4996 | int stopped_by_watchpoint_p; | |
4997 | CORE_ADDR watch_data_address; | |
4998 | ||
4999 | int solibs_changed; | |
5000 | int replay_event; | |
dc146f7c VP |
5001 | |
5002 | int core; | |
74531fed PA |
5003 | }; |
5004 | ||
5005 | /* The list of already fetched and acknowledged stop events. */ | |
5006 | static struct stop_reply *stop_reply_queue; | |
5007 | ||
5008 | static struct stop_reply * | |
5009 | stop_reply_xmalloc (void) | |
5010 | { | |
5011 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 5012 | |
74531fed PA |
5013 | r->next = NULL; |
5014 | return r; | |
5015 | } | |
5016 | ||
5017 | static void | |
5018 | stop_reply_xfree (struct stop_reply *r) | |
5019 | { | |
5020 | if (r != NULL) | |
5021 | { | |
5022 | VEC_free (cached_reg_t, r->regcache); | |
5023 | xfree (r); | |
5024 | } | |
c906108c SS |
5025 | } |
5026 | ||
74531fed PA |
5027 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
5028 | discard everything. */ | |
c906108c | 5029 | |
74531fed PA |
5030 | static void |
5031 | discard_pending_stop_replies (int pid) | |
c906108c | 5032 | { |
74531fed | 5033 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 5034 | |
74531fed PA |
5035 | /* Discard the in-flight notification. */ |
5036 | if (pending_stop_reply != NULL | |
5037 | && (pid == -1 | |
5038 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
5039 | { | |
5040 | stop_reply_xfree (pending_stop_reply); | |
5041 | pending_stop_reply = NULL; | |
5042 | } | |
c906108c | 5043 | |
74531fed PA |
5044 | /* Discard the stop replies we have already pulled with |
5045 | vStopped. */ | |
5046 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 5047 | { |
74531fed PA |
5048 | next = reply->next; |
5049 | if (pid == -1 | |
5050 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 5051 | { |
74531fed PA |
5052 | if (reply == stop_reply_queue) |
5053 | stop_reply_queue = reply->next; | |
5054 | else | |
5055 | prev->next = reply->next; | |
5056 | ||
5057 | stop_reply_xfree (reply); | |
9fa2223d | 5058 | } |
74531fed PA |
5059 | else |
5060 | prev = reply; | |
c8e38a49 | 5061 | } |
74531fed | 5062 | } |
43ff13b4 | 5063 | |
74531fed | 5064 | /* Cleanup wrapper. */ |
2e9f7625 | 5065 | |
74531fed PA |
5066 | static void |
5067 | do_stop_reply_xfree (void *arg) | |
5068 | { | |
5069 | struct stop_reply *r = arg; | |
a744cf53 | 5070 | |
74531fed PA |
5071 | stop_reply_xfree (r); |
5072 | } | |
75c99385 | 5073 | |
74531fed PA |
5074 | /* Look for a queued stop reply belonging to PTID. If one is found, |
5075 | remove it from the queue, and return it. Returns NULL if none is | |
5076 | found. If there are still queued events left to process, tell the | |
5077 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 5078 | |
74531fed PA |
5079 | static struct stop_reply * |
5080 | queued_stop_reply (ptid_t ptid) | |
5081 | { | |
0723dbf5 PA |
5082 | struct stop_reply *it; |
5083 | struct stop_reply **it_link; | |
74531fed | 5084 | |
0723dbf5 PA |
5085 | it = stop_reply_queue; |
5086 | it_link = &stop_reply_queue; | |
5087 | while (it) | |
c8e38a49 | 5088 | { |
0723dbf5 PA |
5089 | if (ptid_match (it->ptid, ptid)) |
5090 | { | |
5091 | *it_link = it->next; | |
5092 | it->next = NULL; | |
5093 | break; | |
5094 | } | |
e24a49d8 | 5095 | |
0723dbf5 PA |
5096 | it_link = &it->next; |
5097 | it = *it_link; | |
5098 | } | |
74531fed PA |
5099 | |
5100 | if (stop_reply_queue) | |
5101 | /* There's still at least an event left. */ | |
5102 | mark_async_event_handler (remote_async_inferior_event_token); | |
5103 | ||
5104 | return it; | |
5105 | } | |
5106 | ||
5107 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5108 | know that we now have at least one queued event left to pass to the | |
5109 | core side, tell the event loop to get back to target_wait soon. */ | |
5110 | ||
5111 | static void | |
5112 | push_stop_reply (struct stop_reply *new_event) | |
5113 | { | |
5114 | struct stop_reply *event; | |
5115 | ||
5116 | if (stop_reply_queue) | |
5117 | { | |
5118 | for (event = stop_reply_queue; | |
5119 | event && event->next; | |
5120 | event = event->next) | |
5121 | ; | |
5122 | ||
5123 | event->next = new_event; | |
5124 | } | |
5125 | else | |
5126 | stop_reply_queue = new_event; | |
5127 | ||
5128 | mark_async_event_handler (remote_async_inferior_event_token); | |
5129 | } | |
5130 | ||
5131 | /* Returns true if we have a stop reply for PTID. */ | |
5132 | ||
5133 | static int | |
5134 | peek_stop_reply (ptid_t ptid) | |
5135 | { | |
5136 | struct stop_reply *it; | |
5137 | ||
5138 | for (it = stop_reply_queue; it; it = it->next) | |
5139 | if (ptid_equal (ptid, it->ptid)) | |
5140 | { | |
5141 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5142 | return 1; | |
5143 | } | |
5144 | ||
5145 | return 0; | |
5146 | } | |
5147 | ||
5148 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5149 | result is stored in EVENT, or throws an error. */ | |
5150 | ||
5151 | static void | |
5152 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5153 | { | |
5154 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5155 | ULONGEST addr; | |
5156 | char *p; | |
5157 | ||
5158 | event->ptid = null_ptid; | |
5159 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5160 | event->ws.value.integer = 0; | |
5161 | event->solibs_changed = 0; | |
5162 | event->replay_event = 0; | |
5163 | event->stopped_by_watchpoint_p = 0; | |
5164 | event->regcache = NULL; | |
dc146f7c | 5165 | event->core = -1; |
74531fed PA |
5166 | |
5167 | switch (buf[0]) | |
5168 | { | |
5169 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5170 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5171 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5172 | ss = signal number | |
5173 | n... = register number | |
5174 | r... = register contents | |
5175 | */ | |
5176 | ||
5177 | p = &buf[3]; /* after Txx */ | |
5178 | while (*p) | |
5179 | { | |
5180 | char *p1; | |
5181 | char *p_temp; | |
5182 | int fieldsize; | |
5183 | LONGEST pnum = 0; | |
43ff13b4 | 5184 | |
cea39f65 MS |
5185 | /* If the packet contains a register number, save it in |
5186 | pnum and set p1 to point to the character following it. | |
5187 | Otherwise p1 points to p. */ | |
3c3bea1c | 5188 | |
cea39f65 MS |
5189 | /* If this packet is an awatch packet, don't parse the 'a' |
5190 | as a register number. */ | |
c8e38a49 | 5191 | |
dc146f7c VP |
5192 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5193 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5194 | { |
5195 | /* Read the ``P'' register number. */ | |
5196 | pnum = strtol (p, &p_temp, 16); | |
5197 | p1 = p_temp; | |
5198 | } | |
5199 | else | |
5200 | p1 = p; | |
802188a7 | 5201 | |
cea39f65 MS |
5202 | if (p1 == p) /* No register number present here. */ |
5203 | { | |
5204 | p1 = strchr (p, ':'); | |
5205 | if (p1 == NULL) | |
5206 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5207 | Packet: '%s'\n"), |
cea39f65 MS |
5208 | p, buf); |
5209 | if (strncmp (p, "thread", p1 - p) == 0) | |
5210 | event->ptid = read_ptid (++p1, &p); | |
5211 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5212 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5213 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5214 | { | |
5215 | event->stopped_by_watchpoint_p = 1; | |
5216 | p = unpack_varlen_hex (++p1, &addr); | |
5217 | event->watch_data_address = (CORE_ADDR) addr; | |
5218 | } | |
5219 | else if (strncmp (p, "library", p1 - p) == 0) | |
5220 | { | |
5221 | p1++; | |
5222 | p_temp = p1; | |
5223 | while (*p_temp && *p_temp != ';') | |
5224 | p_temp++; | |
c8e38a49 | 5225 | |
cea39f65 MS |
5226 | event->solibs_changed = 1; |
5227 | p = p_temp; | |
5228 | } | |
5229 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5230 | { | |
5231 | /* NO_HISTORY event. | |
5232 | p1 will indicate "begin" or "end", but | |
5233 | it makes no difference for now, so ignore it. */ | |
5234 | event->replay_event = 1; | |
5235 | p_temp = strchr (p1 + 1, ';'); | |
5236 | if (p_temp) | |
c8e38a49 | 5237 | p = p_temp; |
cea39f65 | 5238 | } |
dc146f7c VP |
5239 | else if (strncmp (p, "core", p1 - p) == 0) |
5240 | { | |
5241 | ULONGEST c; | |
a744cf53 | 5242 | |
dc146f7c VP |
5243 | p = unpack_varlen_hex (++p1, &c); |
5244 | event->core = c; | |
5245 | } | |
cea39f65 MS |
5246 | else |
5247 | { | |
5248 | /* Silently skip unknown optional info. */ | |
5249 | p_temp = strchr (p1 + 1, ';'); | |
5250 | if (p_temp) | |
5251 | p = p_temp; | |
5252 | } | |
5253 | } | |
5254 | else | |
5255 | { | |
5256 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5257 | cached_reg_t cached_reg; | |
74531fed | 5258 | |
cea39f65 | 5259 | p = p1; |
75c99385 | 5260 | |
cea39f65 MS |
5261 | if (*p != ':') |
5262 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5263 | Packet: '%s'\n"), |
cea39f65 MS |
5264 | p, buf); |
5265 | ++p; | |
43ff13b4 | 5266 | |
cea39f65 MS |
5267 | if (reg == NULL) |
5268 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5269 | Packet: '%s'\n"), |
7c47795c | 5270 | hex_string (pnum), p, buf); |
c8e38a49 | 5271 | |
cea39f65 | 5272 | cached_reg.num = reg->regnum; |
4100683b | 5273 | |
cea39f65 MS |
5274 | fieldsize = hex2bin (p, cached_reg.data, |
5275 | register_size (target_gdbarch, | |
5276 | reg->regnum)); | |
5277 | p += 2 * fieldsize; | |
5278 | if (fieldsize < register_size (target_gdbarch, | |
5279 | reg->regnum)) | |
5280 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5281 | |
cea39f65 MS |
5282 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5283 | } | |
c8e38a49 | 5284 | |
cea39f65 MS |
5285 | if (*p != ';') |
5286 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5287 | buf, p); | |
5288 | ++p; | |
5289 | } | |
c8e38a49 PA |
5290 | /* fall through */ |
5291 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5292 | if (event->solibs_changed) |
5293 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5294 | else if (event->replay_event) | |
5295 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5296 | else |
5297 | { | |
74531fed PA |
5298 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5299 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5300 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5301 | } | |
5302 | break; | |
5303 | case 'W': /* Target exited. */ | |
5304 | case 'X': | |
5305 | { | |
5306 | char *p; | |
5307 | int pid; | |
5308 | ULONGEST value; | |
82f73884 | 5309 | |
c8e38a49 PA |
5310 | /* GDB used to accept only 2 hex chars here. Stubs should |
5311 | only send more if they detect GDB supports multi-process | |
5312 | support. */ | |
5313 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5314 | |
c8e38a49 PA |
5315 | if (buf[0] == 'W') |
5316 | { | |
5317 | /* The remote process exited. */ | |
74531fed PA |
5318 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5319 | event->ws.value.integer = value; | |
c8e38a49 PA |
5320 | } |
5321 | else | |
5322 | { | |
5323 | /* The remote process exited with a signal. */ | |
74531fed PA |
5324 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5325 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5326 | } |
82f73884 | 5327 | |
c8e38a49 PA |
5328 | /* If no process is specified, assume inferior_ptid. */ |
5329 | pid = ptid_get_pid (inferior_ptid); | |
5330 | if (*p == '\0') | |
5331 | ; | |
5332 | else if (*p == ';') | |
5333 | { | |
5334 | p++; | |
5335 | ||
5336 | if (p == '\0') | |
82f73884 | 5337 | ; |
c8e38a49 PA |
5338 | else if (strncmp (p, |
5339 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5340 | { |
c8e38a49 | 5341 | ULONGEST upid; |
a744cf53 | 5342 | |
c8e38a49 PA |
5343 | p += sizeof ("process:") - 1; |
5344 | unpack_varlen_hex (p, &upid); | |
5345 | pid = upid; | |
82f73884 PA |
5346 | } |
5347 | else | |
5348 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5349 | } |
c8e38a49 PA |
5350 | else |
5351 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5352 | event->ptid = pid_to_ptid (pid); |
5353 | } | |
5354 | break; | |
5355 | } | |
5356 | ||
5357 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5358 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5359 | } | |
5360 | ||
5361 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5362 | stop notification (%Stop). Those can come it at any time, hence, | |
5363 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5364 | making is finished, before querying the stub for more events with | |
5365 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5366 | upon receiving the %Stop notification, something like this could | |
5367 | happen: | |
5368 | ||
5369 | 1.1) --> Hg 1 | |
5370 | 1.2) <-- OK | |
5371 | 1.3) --> g | |
5372 | 1.4) <-- %Stop | |
5373 | 1.5) --> vStopped | |
5374 | 1.6) <-- (registers reply to step #1.3) | |
5375 | ||
5376 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5377 | query. | |
5378 | ||
5379 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5380 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5381 | doing whatever we were doing: | |
5382 | ||
5383 | 2.1) --> Hg 1 | |
5384 | 2.2) <-- OK | |
5385 | 2.3) --> g | |
5386 | 2.4) <-- %Stop | |
5387 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5388 | 2.5) <-- (registers reply to step #2.3) | |
5389 | ||
5390 | Eventualy after step #2.5, we return to the event loop, which | |
5391 | notices there's an event on the | |
5392 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5393 | associated callback --- the function below. At this point, we're | |
5394 | always safe to start a vStopped sequence. : | |
5395 | ||
5396 | 2.6) --> vStopped | |
5397 | 2.7) <-- T05 thread:2 | |
5398 | 2.8) --> vStopped | |
5399 | 2.9) --> OK | |
5400 | */ | |
5401 | ||
5402 | static void | |
5403 | remote_get_pending_stop_replies (void) | |
5404 | { | |
5405 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5406 | |
5407 | if (pending_stop_reply) | |
5408 | { | |
5409 | /* acknowledge */ | |
5410 | putpkt ("vStopped"); | |
5411 | ||
5412 | /* Now we can rely on it. */ | |
5413 | push_stop_reply (pending_stop_reply); | |
5414 | pending_stop_reply = NULL; | |
5415 | ||
5416 | while (1) | |
5417 | { | |
5418 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5419 | if (strcmp (rs->buf, "OK") == 0) | |
5420 | break; | |
5421 | else | |
5422 | { | |
5423 | struct cleanup *old_chain; | |
5424 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5425 | ||
5426 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5427 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5428 | ||
5429 | /* acknowledge */ | |
5430 | putpkt ("vStopped"); | |
5431 | ||
5432 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5433 | { | |
5434 | /* Now we can rely on it. */ | |
5435 | discard_cleanups (old_chain); | |
5436 | push_stop_reply (stop_reply); | |
5437 | } | |
5438 | else | |
5439 | /* We got an unknown stop reply. */ | |
5440 | do_cleanups (old_chain); | |
5441 | } | |
5442 | } | |
5443 | } | |
5444 | } | |
5445 | ||
5446 | ||
5447 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5448 | event that is to be returned to the core. This function always | |
5449 | destroys STOP_REPLY. */ | |
5450 | ||
5451 | static ptid_t | |
5452 | process_stop_reply (struct stop_reply *stop_reply, | |
5453 | struct target_waitstatus *status) | |
5454 | { | |
5455 | ptid_t ptid; | |
5456 | ||
5457 | *status = stop_reply->ws; | |
5458 | ptid = stop_reply->ptid; | |
5459 | ||
5460 | /* If no thread/process was reported by the stub, assume the current | |
5461 | inferior. */ | |
5462 | if (ptid_equal (ptid, null_ptid)) | |
5463 | ptid = inferior_ptid; | |
5464 | ||
5f3563ea PA |
5465 | if (status->kind != TARGET_WAITKIND_EXITED |
5466 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5467 | { |
5f3563ea PA |
5468 | /* Expedited registers. */ |
5469 | if (stop_reply->regcache) | |
5470 | { | |
217f1f79 UW |
5471 | struct regcache *regcache |
5472 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5473 | cached_reg_t *reg; |
5474 | int ix; | |
5475 | ||
5476 | for (ix = 0; | |
5477 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5478 | ix++) | |
217f1f79 | 5479 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5480 | VEC_free (cached_reg_t, stop_reply->regcache); |
5481 | } | |
74531fed | 5482 | |
5f3563ea PA |
5483 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5484 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5485 | |
5486 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5487 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5488 | } |
5489 | ||
74531fed PA |
5490 | stop_reply_xfree (stop_reply); |
5491 | return ptid; | |
5492 | } | |
5493 | ||
5494 | /* The non-stop mode version of target_wait. */ | |
5495 | ||
5496 | static ptid_t | |
47608cb1 | 5497 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5498 | { |
5499 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5500 | struct stop_reply *stop_reply; |
5501 | int ret; | |
5502 | ||
5503 | /* If in non-stop mode, get out of getpkt even if a | |
5504 | notification is received. */ | |
5505 | ||
5506 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5507 | 0 /* forever */); | |
5508 | while (1) | |
5509 | { | |
5510 | if (ret != -1) | |
5511 | switch (rs->buf[0]) | |
5512 | { | |
5513 | case 'E': /* Error of some sort. */ | |
5514 | /* We're out of sync with the target now. Did it continue | |
5515 | or not? We can't tell which thread it was in non-stop, | |
5516 | so just ignore this. */ | |
5517 | warning (_("Remote failure reply: %s"), rs->buf); | |
5518 | break; | |
5519 | case 'O': /* Console output. */ | |
5520 | remote_console_output (rs->buf + 1); | |
5521 | break; | |
5522 | default: | |
5523 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5524 | break; | |
5525 | } | |
5526 | ||
5527 | /* Acknowledge a pending stop reply that may have arrived in the | |
5528 | mean time. */ | |
5529 | if (pending_stop_reply != NULL) | |
5530 | remote_get_pending_stop_replies (); | |
5531 | ||
5532 | /* If indeed we noticed a stop reply, we're done. */ | |
5533 | stop_reply = queued_stop_reply (ptid); | |
5534 | if (stop_reply != NULL) | |
5535 | return process_stop_reply (stop_reply, status); | |
5536 | ||
47608cb1 | 5537 | /* Still no event. If we're just polling for an event, then |
74531fed | 5538 | return to the event loop. */ |
47608cb1 | 5539 | if (options & TARGET_WNOHANG) |
74531fed PA |
5540 | { |
5541 | status->kind = TARGET_WAITKIND_IGNORE; | |
5542 | return minus_one_ptid; | |
5543 | } | |
5544 | ||
47608cb1 | 5545 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5546 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5547 | 1 /* forever */); | |
5548 | } | |
5549 | } | |
5550 | ||
5551 | /* Wait until the remote machine stops, then return, storing status in | |
5552 | STATUS just as `wait' would. */ | |
5553 | ||
5554 | static ptid_t | |
47608cb1 | 5555 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5556 | { |
5557 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5558 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5559 | char *buf; |
74531fed PA |
5560 | struct stop_reply *stop_reply; |
5561 | ||
47608cb1 PA |
5562 | again: |
5563 | ||
74531fed PA |
5564 | status->kind = TARGET_WAITKIND_IGNORE; |
5565 | status->value.integer = 0; | |
5566 | ||
5567 | stop_reply = queued_stop_reply (ptid); | |
5568 | if (stop_reply != NULL) | |
5569 | return process_stop_reply (stop_reply, status); | |
5570 | ||
5571 | if (rs->cached_wait_status) | |
5572 | /* Use the cached wait status, but only once. */ | |
5573 | rs->cached_wait_status = 0; | |
5574 | else | |
5575 | { | |
5576 | int ret; | |
5577 | ||
5578 | if (!target_is_async_p ()) | |
5579 | { | |
5580 | ofunc = signal (SIGINT, remote_interrupt); | |
5581 | /* If the user hit C-c before this packet, or between packets, | |
5582 | pretend that it was hit right here. */ | |
5583 | if (quit_flag) | |
5584 | { | |
5585 | quit_flag = 0; | |
5586 | remote_interrupt (SIGINT); | |
5587 | } | |
5588 | } | |
5589 | ||
5590 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5591 | _never_ wait for ever -> test on target_is_async_p(). | |
5592 | However, before we do that we need to ensure that the caller | |
5593 | knows how to take the target into/out of async mode. */ | |
5594 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5595 | if (!target_is_async_p ()) | |
5596 | signal (SIGINT, ofunc); | |
5597 | } | |
5598 | ||
5599 | buf = rs->buf; | |
5600 | ||
5601 | remote_stopped_by_watchpoint_p = 0; | |
5602 | ||
5603 | /* We got something. */ | |
5604 | rs->waiting_for_stop_reply = 0; | |
5605 | ||
3a29589a DJ |
5606 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5607 | an 'F' or 'O' packet. */ | |
5608 | if (buf[0] != 'F' && buf[0] != 'O') | |
5609 | rs->ctrlc_pending_p = 0; | |
5610 | ||
74531fed PA |
5611 | switch (buf[0]) |
5612 | { | |
5613 | case 'E': /* Error of some sort. */ | |
5614 | /* We're out of sync with the target now. Did it continue or | |
5615 | not? Not is more likely, so report a stop. */ | |
5616 | warning (_("Remote failure reply: %s"), buf); | |
5617 | status->kind = TARGET_WAITKIND_STOPPED; | |
5618 | status->value.sig = TARGET_SIGNAL_0; | |
5619 | break; | |
5620 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5621 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5622 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5623 | break; |
5624 | case 'T': case 'S': case 'X': case 'W': | |
5625 | { | |
5626 | struct stop_reply *stop_reply; | |
5627 | struct cleanup *old_chain; | |
5628 | ||
5629 | stop_reply = stop_reply_xmalloc (); | |
5630 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5631 | remote_parse_stop_reply (buf, stop_reply); | |
5632 | discard_cleanups (old_chain); | |
5633 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5634 | break; |
5635 | } | |
5636 | case 'O': /* Console output. */ | |
5637 | remote_console_output (buf + 1); | |
e24a49d8 | 5638 | |
c8e38a49 PA |
5639 | /* The target didn't really stop; keep waiting. */ |
5640 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5641 | |
c8e38a49 PA |
5642 | break; |
5643 | case '\0': | |
5644 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5645 | { | |
5646 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5647 | remote system doesn't support it. */ | |
5648 | target_terminal_ours_for_output (); | |
5649 | printf_filtered | |
5650 | ("Can't send signals to this remote system. %s not sent.\n", | |
5651 | target_signal_to_name (last_sent_signal)); | |
5652 | last_sent_signal = TARGET_SIGNAL_0; | |
5653 | target_terminal_inferior (); | |
5654 | ||
5655 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5656 | putpkt ((char *) buf); | |
5657 | ||
5658 | /* We just told the target to resume, so a stop reply is in | |
5659 | order. */ | |
e24a49d8 | 5660 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5661 | break; |
43ff13b4 | 5662 | } |
c8e38a49 PA |
5663 | /* else fallthrough */ |
5664 | default: | |
5665 | warning (_("Invalid remote reply: %s"), buf); | |
5666 | /* Keep waiting. */ | |
5667 | rs->waiting_for_stop_reply = 1; | |
5668 | break; | |
43ff13b4 | 5669 | } |
c8e38a49 | 5670 | |
c8e38a49 | 5671 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5672 | { |
5673 | /* Nothing interesting happened. If we're doing a non-blocking | |
5674 | poll, we're done. Otherwise, go back to waiting. */ | |
5675 | if (options & TARGET_WNOHANG) | |
5676 | return minus_one_ptid; | |
5677 | else | |
5678 | goto again; | |
5679 | } | |
74531fed PA |
5680 | else if (status->kind != TARGET_WAITKIND_EXITED |
5681 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5682 | { |
5683 | if (!ptid_equal (event_ptid, null_ptid)) | |
5684 | record_currthread (event_ptid); | |
5685 | else | |
5686 | event_ptid = inferior_ptid; | |
43ff13b4 | 5687 | } |
74531fed PA |
5688 | else |
5689 | /* A process exit. Invalidate our notion of current thread. */ | |
5690 | record_currthread (minus_one_ptid); | |
79d7f229 | 5691 | |
82f73884 | 5692 | return event_ptid; |
43ff13b4 JM |
5693 | } |
5694 | ||
74531fed PA |
5695 | /* Wait until the remote machine stops, then return, storing status in |
5696 | STATUS just as `wait' would. */ | |
5697 | ||
c8e38a49 | 5698 | static ptid_t |
117de6a9 | 5699 | remote_wait (struct target_ops *ops, |
47608cb1 | 5700 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5701 | { |
5702 | ptid_t event_ptid; | |
5703 | ||
74531fed | 5704 | if (non_stop) |
47608cb1 | 5705 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5706 | else |
47608cb1 | 5707 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5708 | |
74531fed | 5709 | if (target_can_async_p ()) |
c8e38a49 | 5710 | { |
74531fed PA |
5711 | /* If there are are events left in the queue tell the event loop |
5712 | to return here. */ | |
5713 | if (stop_reply_queue) | |
5714 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5715 | } |
c8e38a49 PA |
5716 | |
5717 | return event_ptid; | |
5718 | } | |
5719 | ||
74ca34ce | 5720 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5721 | |
b96ec7ac | 5722 | static int |
56be3814 | 5723 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5724 | { |
5725 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5726 | char *buf, *p; |
b96ec7ac AC |
5727 | char regp[MAX_REGISTER_SIZE]; |
5728 | int i; | |
5729 | ||
74ca34ce DJ |
5730 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5731 | return 0; | |
5732 | ||
5733 | if (reg->pnum == -1) | |
5734 | return 0; | |
5735 | ||
2e9f7625 | 5736 | p = rs->buf; |
fcad0fa4 | 5737 | *p++ = 'p'; |
74ca34ce | 5738 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5739 | *p++ = '\0'; |
1f4437a4 MS |
5740 | putpkt (rs->buf); |
5741 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5742 | |
2e9f7625 DJ |
5743 | buf = rs->buf; |
5744 | ||
74ca34ce DJ |
5745 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5746 | { | |
5747 | case PACKET_OK: | |
5748 | break; | |
5749 | case PACKET_UNKNOWN: | |
5750 | return 0; | |
5751 | case PACKET_ERROR: | |
27a9c0bf MS |
5752 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5753 | gdbarch_register_name (get_regcache_arch (regcache), | |
5754 | reg->regnum), | |
5755 | buf); | |
74ca34ce | 5756 | } |
3f9a994c JB |
5757 | |
5758 | /* If this register is unfetchable, tell the regcache. */ | |
5759 | if (buf[0] == 'x') | |
8480adf2 | 5760 | { |
56be3814 | 5761 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5762 | return 1; |
b96ec7ac | 5763 | } |
b96ec7ac | 5764 | |
3f9a994c JB |
5765 | /* Otherwise, parse and supply the value. */ |
5766 | p = buf; | |
5767 | i = 0; | |
5768 | while (p[0] != 0) | |
5769 | { | |
5770 | if (p[1] == 0) | |
74ca34ce | 5771 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5772 | |
5773 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5774 | p += 2; | |
5775 | } | |
56be3814 | 5776 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5777 | return 1; |
b96ec7ac AC |
5778 | } |
5779 | ||
74ca34ce DJ |
5780 | /* Fetch the registers included in the target's 'g' packet. */ |
5781 | ||
29709017 DJ |
5782 | static int |
5783 | send_g_packet (void) | |
c906108c | 5784 | { |
d01949b6 | 5785 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5786 | int buf_len; |
c906108c | 5787 | |
74ca34ce DJ |
5788 | sprintf (rs->buf, "g"); |
5789 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5790 | |
29709017 DJ |
5791 | /* We can get out of synch in various cases. If the first character |
5792 | in the buffer is not a hex character, assume that has happened | |
5793 | and try to fetch another packet to read. */ | |
5794 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5795 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5796 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5797 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5798 | { | |
5799 | if (remote_debug) | |
5800 | fprintf_unfiltered (gdb_stdlog, | |
5801 | "Bad register packet; fetching a new packet\n"); | |
5802 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5803 | } | |
5804 | ||
74ca34ce DJ |
5805 | buf_len = strlen (rs->buf); |
5806 | ||
5807 | /* Sanity check the received packet. */ | |
5808 | if (buf_len % 2 != 0) | |
5809 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5810 | |
5811 | return buf_len / 2; | |
5812 | } | |
5813 | ||
5814 | static void | |
56be3814 | 5815 | process_g_packet (struct regcache *regcache) |
29709017 | 5816 | { |
4a22f64d | 5817 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5818 | struct remote_state *rs = get_remote_state (); |
5819 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5820 | int i, buf_len; | |
5821 | char *p; | |
5822 | char *regs; | |
5823 | ||
5824 | buf_len = strlen (rs->buf); | |
5825 | ||
5826 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5827 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5828 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5829 | ||
5830 | /* Save the size of the packet sent to us by the target. It is used | |
5831 | as a heuristic when determining the max size of packets that the | |
5832 | target can safely receive. */ | |
5833 | if (rsa->actual_register_packet_size == 0) | |
5834 | rsa->actual_register_packet_size = buf_len; | |
5835 | ||
5836 | /* If this is smaller than we guessed the 'g' packet would be, | |
5837 | update our records. A 'g' reply that doesn't include a register's | |
5838 | value implies either that the register is not available, or that | |
5839 | the 'p' packet must be used. */ | |
5840 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5841 | { |
74ca34ce DJ |
5842 | rsa->sizeof_g_packet = buf_len / 2; |
5843 | ||
4a22f64d | 5844 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5845 | { |
74ca34ce DJ |
5846 | if (rsa->regs[i].pnum == -1) |
5847 | continue; | |
5848 | ||
5849 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5850 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5851 | else |
74ca34ce | 5852 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5853 | } |
74ca34ce | 5854 | } |
b323314b | 5855 | |
74ca34ce | 5856 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5857 | |
5858 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5859 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5860 | |
c906108c SS |
5861 | /* Reply describes registers byte by byte, each byte encoded as two |
5862 | hex characters. Suck them all up, then supply them to the | |
5863 | register cacheing/storage mechanism. */ | |
5864 | ||
74ca34ce | 5865 | p = rs->buf; |
ea9c271d | 5866 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5867 | { |
74ca34ce DJ |
5868 | if (p[0] == 0 || p[1] == 0) |
5869 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5870 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5871 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5872 | |
c906108c | 5873 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5874 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5875 | else |
5876 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5877 | p += 2; | |
5878 | } | |
5879 | ||
a744cf53 MS |
5880 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5881 | { | |
5882 | struct packet_reg *r = &rsa->regs[i]; | |
5883 | ||
5884 | if (r->in_g_packet) | |
5885 | { | |
5886 | if (r->offset * 2 >= strlen (rs->buf)) | |
5887 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5888 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5889 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
5890 | else if (rs->buf[r->offset * 2] == 'x') |
5891 | { | |
5892 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5893 | /* The register isn't available, mark it as such (at | |
5894 | the same time setting the value to zero). */ | |
5895 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5896 | } | |
5897 | else | |
5898 | regcache_raw_supply (regcache, r->regnum, | |
5899 | regs + r->offset); | |
5900 | } | |
5901 | } | |
c906108c SS |
5902 | } |
5903 | ||
29709017 | 5904 | static void |
56be3814 | 5905 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5906 | { |
5907 | send_g_packet (); | |
56be3814 | 5908 | process_g_packet (regcache); |
29709017 DJ |
5909 | } |
5910 | ||
e6e4e701 PA |
5911 | /* Make the remote selected traceframe match GDB's selected |
5912 | traceframe. */ | |
5913 | ||
5914 | static void | |
5915 | set_remote_traceframe (void) | |
5916 | { | |
5917 | int newnum; | |
5918 | ||
5919 | if (remote_traceframe_number == get_traceframe_number ()) | |
5920 | return; | |
5921 | ||
5922 | /* Avoid recursion, remote_trace_find calls us again. */ | |
5923 | remote_traceframe_number = get_traceframe_number (); | |
5924 | ||
5925 | newnum = target_trace_find (tfind_number, | |
5926 | get_traceframe_number (), 0, 0, NULL); | |
5927 | ||
5928 | /* Should not happen. If it does, all bets are off. */ | |
5929 | if (newnum != get_traceframe_number ()) | |
5930 | warning (_("could not set remote traceframe")); | |
5931 | } | |
5932 | ||
74ca34ce | 5933 | static void |
28439f5e PA |
5934 | remote_fetch_registers (struct target_ops *ops, |
5935 | struct regcache *regcache, int regnum) | |
74ca34ce | 5936 | { |
74ca34ce DJ |
5937 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5938 | int i; | |
5939 | ||
e6e4e701 | 5940 | set_remote_traceframe (); |
79d7f229 | 5941 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5942 | |
5943 | if (regnum >= 0) | |
5944 | { | |
5945 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5946 | |
74ca34ce DJ |
5947 | gdb_assert (reg != NULL); |
5948 | ||
5949 | /* If this register might be in the 'g' packet, try that first - | |
5950 | we are likely to read more than one register. If this is the | |
5951 | first 'g' packet, we might be overly optimistic about its | |
5952 | contents, so fall back to 'p'. */ | |
5953 | if (reg->in_g_packet) | |
5954 | { | |
56be3814 | 5955 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5956 | if (reg->in_g_packet) |
5957 | return; | |
5958 | } | |
5959 | ||
56be3814 | 5960 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5961 | return; |
5962 | ||
5963 | /* This register is not available. */ | |
56be3814 | 5964 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5965 | |
5966 | return; | |
5967 | } | |
5968 | ||
56be3814 | 5969 | fetch_registers_using_g (regcache); |
74ca34ce | 5970 | |
4a22f64d | 5971 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5972 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5973 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5974 | { |
5975 | /* This register is not available. */ | |
56be3814 | 5976 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5977 | } |
5978 | } | |
5979 | ||
c906108c SS |
5980 | /* Prepare to store registers. Since we may send them all (using a |
5981 | 'G' request), we have to read out the ones we don't want to change | |
5982 | first. */ | |
5983 | ||
c5aa993b | 5984 | static void |
316f2060 | 5985 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5986 | { |
ea9c271d | 5987 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5988 | int i; |
cfd77fa1 | 5989 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5990 | |
c906108c | 5991 | /* Make sure the entire registers array is valid. */ |
444abaca | 5992 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5993 | { |
5994 | case PACKET_DISABLE: | |
5995 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5996 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5997 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5998 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5999 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
6000 | break; |
6001 | case PACKET_ENABLE: | |
6002 | break; | |
6003 | } | |
6004 | } | |
6005 | ||
ad10f812 | 6006 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 6007 | packet was not recognized. */ |
5a2468f5 JM |
6008 | |
6009 | static int | |
1f4437a4 MS |
6010 | store_register_using_P (const struct regcache *regcache, |
6011 | struct packet_reg *reg) | |
5a2468f5 | 6012 | { |
4a22f64d | 6013 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 6014 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 6015 | /* Try storing a single register. */ |
6d820c5c | 6016 | char *buf = rs->buf; |
cfd77fa1 | 6017 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 6018 | char *p; |
5a2468f5 | 6019 | |
74ca34ce DJ |
6020 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
6021 | return 0; | |
6022 | ||
6023 | if (reg->pnum == -1) | |
6024 | return 0; | |
6025 | ||
ea9c271d | 6026 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 6027 | p = buf + strlen (buf); |
56be3814 | 6028 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 6029 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
6030 | putpkt (rs->buf); |
6031 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 6032 | |
74ca34ce DJ |
6033 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
6034 | { | |
6035 | case PACKET_OK: | |
6036 | return 1; | |
6037 | case PACKET_ERROR: | |
27a9c0bf MS |
6038 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
6039 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
6040 | case PACKET_UNKNOWN: |
6041 | return 0; | |
6042 | default: | |
6043 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
6044 | } | |
c906108c SS |
6045 | } |
6046 | ||
23860348 MS |
6047 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
6048 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
6049 | |
6050 | static void | |
56be3814 | 6051 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 6052 | { |
d01949b6 | 6053 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 6054 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 6055 | gdb_byte *regs; |
c906108c SS |
6056 | char *p; |
6057 | ||
193cb69f AC |
6058 | /* Extract all the registers in the regcache copying them into a |
6059 | local buffer. */ | |
6060 | { | |
b323314b | 6061 | int i; |
a744cf53 | 6062 | |
ea9c271d DJ |
6063 | regs = alloca (rsa->sizeof_g_packet); |
6064 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 6065 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 6066 | { |
ea9c271d | 6067 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 6068 | |
b323314b | 6069 | if (r->in_g_packet) |
56be3814 | 6070 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
6071 | } |
6072 | } | |
c906108c SS |
6073 | |
6074 | /* Command describes registers byte by byte, | |
6075 | each byte encoded as two hex characters. */ | |
6d820c5c | 6076 | p = rs->buf; |
193cb69f | 6077 | *p++ = 'G'; |
74ca34ce DJ |
6078 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
6079 | updated. */ | |
6080 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
6081 | putpkt (rs->buf); |
6082 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6083 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
6084 | error (_("Could not write registers; remote failure reply '%s'"), |
6085 | rs->buf); | |
c906108c | 6086 | } |
74ca34ce DJ |
6087 | |
6088 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
6089 | of the register cache buffer. FIXME: ignores errors. */ | |
6090 | ||
6091 | static void | |
28439f5e PA |
6092 | remote_store_registers (struct target_ops *ops, |
6093 | struct regcache *regcache, int regnum) | |
74ca34ce | 6094 | { |
74ca34ce DJ |
6095 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6096 | int i; | |
6097 | ||
e6e4e701 | 6098 | set_remote_traceframe (); |
79d7f229 | 6099 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6100 | |
6101 | if (regnum >= 0) | |
6102 | { | |
6103 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6104 | |
74ca34ce DJ |
6105 | gdb_assert (reg != NULL); |
6106 | ||
6107 | /* Always prefer to store registers using the 'P' packet if | |
6108 | possible; we often change only a small number of registers. | |
6109 | Sometimes we change a larger number; we'd need help from a | |
6110 | higher layer to know to use 'G'. */ | |
56be3814 | 6111 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6112 | return; |
6113 | ||
6114 | /* For now, don't complain if we have no way to write the | |
6115 | register. GDB loses track of unavailable registers too | |
6116 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6117 | any way to read the register, either... */ |
74ca34ce DJ |
6118 | if (!reg->in_g_packet) |
6119 | return; | |
6120 | ||
56be3814 | 6121 | store_registers_using_G (regcache); |
74ca34ce DJ |
6122 | return; |
6123 | } | |
6124 | ||
56be3814 | 6125 | store_registers_using_G (regcache); |
74ca34ce | 6126 | |
4a22f64d | 6127 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6128 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6129 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6130 | /* See above for why we do not issue an error here. */ |
6131 | continue; | |
6132 | } | |
c906108c SS |
6133 | \f |
6134 | ||
6135 | /* Return the number of hex digits in num. */ | |
6136 | ||
6137 | static int | |
fba45db2 | 6138 | hexnumlen (ULONGEST num) |
c906108c SS |
6139 | { |
6140 | int i; | |
6141 | ||
6142 | for (i = 0; num != 0; i++) | |
6143 | num >>= 4; | |
6144 | ||
6145 | return max (i, 1); | |
6146 | } | |
6147 | ||
2df3850c | 6148 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6149 | |
6150 | static int | |
fba45db2 | 6151 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6152 | { |
c906108c | 6153 | int len = hexnumlen (num); |
a744cf53 | 6154 | |
2df3850c JM |
6155 | return hexnumnstr (buf, num, len); |
6156 | } | |
6157 | ||
c906108c | 6158 | |
2df3850c | 6159 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6160 | |
2df3850c | 6161 | static int |
fba45db2 | 6162 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6163 | { |
6164 | int i; | |
6165 | ||
6166 | buf[width] = '\0'; | |
6167 | ||
6168 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6169 | { |
c5aa993b | 6170 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6171 | num >>= 4; |
6172 | } | |
6173 | ||
2df3850c | 6174 | return width; |
c906108c SS |
6175 | } |
6176 | ||
23860348 | 6177 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6178 | |
6179 | static CORE_ADDR | |
fba45db2 | 6180 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6181 | { |
911c95a5 | 6182 | int address_size = remote_address_size; |
a744cf53 | 6183 | |
911c95a5 UW |
6184 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6185 | if (!address_size) | |
1cf3db46 | 6186 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6187 | |
6188 | if (address_size > 0 | |
6189 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6190 | { |
6191 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6192 | in a ULONGEST variable. */ |
c906108c | 6193 | ULONGEST mask = 1; |
a744cf53 | 6194 | |
911c95a5 | 6195 | mask = (mask << address_size) - 1; |
c906108c SS |
6196 | addr &= mask; |
6197 | } | |
6198 | return addr; | |
6199 | } | |
6200 | ||
a31ea83d DJ |
6201 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6202 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6203 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6204 | (which may be more than *OUT_LEN due to escape characters). The | |
6205 | total number of bytes in the output buffer will be at most | |
6206 | OUT_MAXLEN. */ | |
6207 | ||
6208 | static int | |
6209 | remote_escape_output (const gdb_byte *buffer, int len, | |
6210 | gdb_byte *out_buf, int *out_len, | |
6211 | int out_maxlen) | |
6212 | { | |
6213 | int input_index, output_index; | |
6214 | ||
6215 | output_index = 0; | |
6216 | for (input_index = 0; input_index < len; input_index++) | |
6217 | { | |
6218 | gdb_byte b = buffer[input_index]; | |
6219 | ||
6220 | if (b == '$' || b == '#' || b == '}') | |
6221 | { | |
6222 | /* These must be escaped. */ | |
6223 | if (output_index + 2 > out_maxlen) | |
6224 | break; | |
6225 | out_buf[output_index++] = '}'; | |
6226 | out_buf[output_index++] = b ^ 0x20; | |
6227 | } | |
6228 | else | |
6229 | { | |
6230 | if (output_index + 1 > out_maxlen) | |
6231 | break; | |
6232 | out_buf[output_index++] = b; | |
6233 | } | |
6234 | } | |
6235 | ||
6236 | *out_len = input_index; | |
6237 | return output_index; | |
6238 | } | |
6239 | ||
0876f84a DJ |
6240 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6241 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6242 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6243 | ||
6244 | This function reverses remote_escape_output. It allows more | |
6245 | escaped characters than that function does, in particular because | |
6246 | '*' must be escaped to avoid the run-length encoding processing | |
6247 | in reading packets. */ | |
6248 | ||
6249 | static int | |
6250 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6251 | gdb_byte *out_buf, int out_maxlen) | |
6252 | { | |
6253 | int input_index, output_index; | |
6254 | int escaped; | |
6255 | ||
6256 | output_index = 0; | |
6257 | escaped = 0; | |
6258 | for (input_index = 0; input_index < len; input_index++) | |
6259 | { | |
6260 | gdb_byte b = buffer[input_index]; | |
6261 | ||
6262 | if (output_index + 1 > out_maxlen) | |
6263 | { | |
6264 | warning (_("Received too much data from remote target;" | |
6265 | " ignoring overflow.")); | |
6266 | return output_index; | |
6267 | } | |
6268 | ||
6269 | if (escaped) | |
6270 | { | |
6271 | out_buf[output_index++] = b ^ 0x20; | |
6272 | escaped = 0; | |
6273 | } | |
6274 | else if (b == '}') | |
6275 | escaped = 1; | |
6276 | else | |
6277 | out_buf[output_index++] = b; | |
6278 | } | |
6279 | ||
6280 | if (escaped) | |
6281 | error (_("Unmatched escape character in target response.")); | |
6282 | ||
6283 | return output_index; | |
6284 | } | |
6285 | ||
c906108c SS |
6286 | /* Determine whether the remote target supports binary downloading. |
6287 | This is accomplished by sending a no-op memory write of zero length | |
6288 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6289 | the whole packet, since many stubs strip the eighth bit and |
6290 | subsequently compute a wrong checksum, which causes real havoc with | |
6291 | remote_write_bytes. | |
7a292a7a | 6292 | |
96baa820 | 6293 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6294 | clean. In cases like this, the user should clear "remote |
23860348 | 6295 | X-packet". */ |
96baa820 | 6296 | |
c906108c | 6297 | static void |
fba45db2 | 6298 | check_binary_download (CORE_ADDR addr) |
c906108c | 6299 | { |
d01949b6 | 6300 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6301 | |
444abaca | 6302 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6303 | { |
96baa820 JM |
6304 | case PACKET_DISABLE: |
6305 | break; | |
6306 | case PACKET_ENABLE: | |
6307 | break; | |
6308 | case PACKET_SUPPORT_UNKNOWN: | |
6309 | { | |
96baa820 | 6310 | char *p; |
802188a7 | 6311 | |
2e9f7625 | 6312 | p = rs->buf; |
96baa820 JM |
6313 | *p++ = 'X'; |
6314 | p += hexnumstr (p, (ULONGEST) addr); | |
6315 | *p++ = ','; | |
6316 | p += hexnumstr (p, (ULONGEST) 0); | |
6317 | *p++ = ':'; | |
6318 | *p = '\0'; | |
802188a7 | 6319 | |
2e9f7625 | 6320 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6321 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6322 | |
2e9f7625 | 6323 | if (rs->buf[0] == '\0') |
96baa820 JM |
6324 | { |
6325 | if (remote_debug) | |
6326 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6327 | "binary downloading NOT " |
6328 | "supported by target\n"); | |
444abaca | 6329 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6330 | } |
6331 | else | |
6332 | { | |
6333 | if (remote_debug) | |
6334 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6335 | "binary downloading supported by target\n"); |
444abaca | 6336 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6337 | } |
6338 | break; | |
6339 | } | |
c906108c SS |
6340 | } |
6341 | } | |
6342 | ||
6343 | /* Write memory data directly to the remote machine. | |
6344 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6345 | HEADER is the starting part of the packet. |
c906108c SS |
6346 | MEMADDR is the address in the remote memory space. |
6347 | MYADDR is the address of the buffer in our space. | |
6348 | LEN is the number of bytes. | |
a76d924d DJ |
6349 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6350 | should send data as binary ('X'), or hex-encoded ('M'). | |
6351 | ||
6352 | The function creates packet of the form | |
6353 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6354 | ||
6355 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6356 | ||
6357 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6358 | are omitted. | |
6359 | ||
6360 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6361 | error. Only transfer a single packet. */ |
c906108c | 6362 | |
a76d924d DJ |
6363 | static int |
6364 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6365 | const gdb_byte *myaddr, int len, | |
6366 | char packet_format, int use_length) | |
c906108c | 6367 | { |
6d820c5c | 6368 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6369 | char *p; |
a76d924d DJ |
6370 | char *plen = NULL; |
6371 | int plenlen = 0; | |
917317f4 JM |
6372 | int todo; |
6373 | int nr_bytes; | |
a257b5bb | 6374 | int payload_size; |
6765f3e5 | 6375 | int payload_length; |
a76d924d DJ |
6376 | int header_length; |
6377 | ||
6378 | if (packet_format != 'X' && packet_format != 'M') | |
6379 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6380 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6381 | |
b2182ed2 DJ |
6382 | if (len <= 0) |
6383 | return 0; | |
6384 | ||
3de11b2e | 6385 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6386 | |
6d820c5c DJ |
6387 | /* The packet buffer will be large enough for the payload; |
6388 | get_memory_packet_size ensures this. */ | |
a76d924d | 6389 | rs->buf[0] = '\0'; |
c906108c | 6390 | |
a257b5bb | 6391 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6392 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6393 | ||
a76d924d DJ |
6394 | payload_size -= strlen ("$,:#NN"); |
6395 | if (!use_length) | |
0df8b418 | 6396 | /* The comma won't be used. */ |
a76d924d DJ |
6397 | payload_size += 1; |
6398 | header_length = strlen (header); | |
6399 | payload_size -= header_length; | |
3de11b2e | 6400 | payload_size -= hexnumlen (memaddr); |
c906108c | 6401 | |
a76d924d | 6402 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6403 | |
a76d924d DJ |
6404 | strcat (rs->buf, header); |
6405 | p = rs->buf + strlen (header); | |
6406 | ||
6407 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6408 | if (packet_format == 'X') | |
c906108c | 6409 | { |
23860348 | 6410 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6411 | todo = min (len, payload_size); |
a76d924d DJ |
6412 | if (use_length) |
6413 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6414 | todo = min (todo, payload_size); |
a76d924d DJ |
6415 | } |
6416 | else | |
6417 | { | |
23860348 | 6418 | /* Num bytes that will fit. */ |
a257b5bb | 6419 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6420 | if (use_length) |
6421 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6422 | todo = min (todo, payload_size / 2); |
917317f4 | 6423 | } |
a76d924d | 6424 | |
3de11b2e NS |
6425 | if (todo <= 0) |
6426 | internal_error (__FILE__, __LINE__, | |
405f8e94 | 6427 | _("minimum packet size too small to write data")); |
802188a7 | 6428 | |
6765f3e5 DJ |
6429 | /* If we already need another packet, then try to align the end |
6430 | of this packet to a useful boundary. */ | |
6431 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6432 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6433 | ||
a257b5bb | 6434 | /* Append "<memaddr>". */ |
917317f4 JM |
6435 | memaddr = remote_address_masked (memaddr); |
6436 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6437 | |
a76d924d DJ |
6438 | if (use_length) |
6439 | { | |
6440 | /* Append ",". */ | |
6441 | *p++ = ','; | |
802188a7 | 6442 | |
a76d924d DJ |
6443 | /* Append <len>. Retain the location/size of <len>. It may need to |
6444 | be adjusted once the packet body has been created. */ | |
6445 | plen = p; | |
6446 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6447 | p += plenlen; | |
6448 | } | |
a257b5bb AC |
6449 | |
6450 | /* Append ":". */ | |
917317f4 JM |
6451 | *p++ = ':'; |
6452 | *p = '\0'; | |
802188a7 | 6453 | |
a257b5bb | 6454 | /* Append the packet body. */ |
a76d924d | 6455 | if (packet_format == 'X') |
917317f4 | 6456 | { |
917317f4 JM |
6457 | /* Binary mode. Send target system values byte by byte, in |
6458 | increasing byte addresses. Only escape certain critical | |
6459 | characters. */ | |
6765f3e5 DJ |
6460 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6461 | payload_size); | |
6462 | ||
6463 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6464 | a second try to keep the end of the packet aligned. Don't do |
6465 | this if the packet is tiny. */ | |
6466 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6467 | { |
6468 | int new_nr_bytes; | |
6469 | ||
6470 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6471 | - memaddr); | |
6472 | if (new_nr_bytes != nr_bytes) | |
6473 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6474 | p, &nr_bytes, | |
6475 | payload_size); | |
6476 | } | |
6477 | ||
6478 | p += payload_length; | |
a76d924d | 6479 | if (use_length && nr_bytes < todo) |
c906108c | 6480 | { |
802188a7 | 6481 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6482 | and we have actually sent fewer bytes than planned. |
6483 | Fix-up the length field of the packet. Use the same | |
6484 | number of characters as before. */ | |
917317f4 JM |
6485 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6486 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6487 | } |
a76d924d DJ |
6488 | } |
6489 | else | |
6490 | { | |
917317f4 JM |
6491 | /* Normal mode: Send target system values byte by byte, in |
6492 | increasing byte addresses. Each byte is encoded as a two hex | |
6493 | value. */ | |
2644f393 | 6494 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6495 | p += 2 * nr_bytes; |
c906108c | 6496 | } |
802188a7 | 6497 | |
2e9f7625 | 6498 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6499 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6500 | |
2e9f7625 | 6501 | if (rs->buf[0] == 'E') |
917317f4 JM |
6502 | { |
6503 | /* There is no correspondance between what the remote protocol | |
6504 | uses for errors and errno codes. We would like a cleaner way | |
6505 | of representing errors (big enough to include errno codes, | |
6506 | bfd_error codes, and others). But for now just return EIO. */ | |
6507 | errno = EIO; | |
6508 | return 0; | |
6509 | } | |
802188a7 | 6510 | |
23860348 MS |
6511 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6512 | fewer bytes than we'd planned. */ | |
917317f4 | 6513 | return nr_bytes; |
c906108c SS |
6514 | } |
6515 | ||
a76d924d DJ |
6516 | /* Write memory data directly to the remote machine. |
6517 | This does not inform the data cache; the data cache uses this. | |
6518 | MEMADDR is the address in the remote memory space. | |
6519 | MYADDR is the address of the buffer in our space. | |
6520 | LEN is the number of bytes. | |
6521 | ||
6522 | Returns number of bytes transferred, or 0 (setting errno) for | |
6523 | error. Only transfer a single packet. */ | |
6524 | ||
f7605bc2 | 6525 | static int |
a76d924d DJ |
6526 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
6527 | { | |
6528 | char *packet_format = 0; | |
6529 | ||
6530 | /* Check whether the target supports binary download. */ | |
6531 | check_binary_download (memaddr); | |
6532 | ||
6533 | switch (remote_protocol_packets[PACKET_X].support) | |
6534 | { | |
6535 | case PACKET_ENABLE: | |
6536 | packet_format = "X"; | |
6537 | break; | |
6538 | case PACKET_DISABLE: | |
6539 | packet_format = "M"; | |
6540 | break; | |
6541 | case PACKET_SUPPORT_UNKNOWN: | |
6542 | internal_error (__FILE__, __LINE__, | |
6543 | _("remote_write_bytes: bad internal state")); | |
6544 | default: | |
6545 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6546 | } | |
6547 | ||
6548 | return remote_write_bytes_aux (packet_format, | |
6549 | memaddr, myaddr, len, packet_format[0], 1); | |
6550 | } | |
6551 | ||
c906108c SS |
6552 | /* Read memory data directly from the remote machine. |
6553 | This does not use the data cache; the data cache uses this. | |
6554 | MEMADDR is the address in the remote memory space. | |
6555 | MYADDR is the address of the buffer in our space. | |
6556 | LEN is the number of bytes. | |
6557 | ||
6558 | Returns number of bytes transferred, or 0 for error. */ | |
6559 | ||
f7605bc2 | 6560 | static int |
cfd77fa1 | 6561 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6562 | { |
6d820c5c | 6563 | struct remote_state *rs = get_remote_state (); |
23860348 | 6564 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6565 | char *p; |
6566 | int todo; | |
6567 | int i; | |
c906108c | 6568 | |
b2182ed2 DJ |
6569 | if (len <= 0) |
6570 | return 0; | |
6571 | ||
11cf8741 | 6572 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6573 | /* The packet buffer will be large enough for the payload; |
6574 | get_memory_packet_size ensures this. */ | |
c906108c | 6575 | |
f7605bc2 PA |
6576 | /* Number if bytes that will fit. */ |
6577 | todo = min (len, max_buf_size / 2); | |
c906108c | 6578 | |
f7605bc2 PA |
6579 | /* Construct "m"<memaddr>","<len>". */ |
6580 | memaddr = remote_address_masked (memaddr); | |
6581 | p = rs->buf; | |
6582 | *p++ = 'm'; | |
6583 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6584 | *p++ = ','; | |
6585 | p += hexnumstr (p, (ULONGEST) todo); | |
6586 | *p = '\0'; | |
6587 | putpkt (rs->buf); | |
6588 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6589 | if (rs->buf[0] == 'E' | |
6590 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6591 | && rs->buf[3] == '\0') | |
6592 | { | |
6593 | /* There is no correspondance between what the remote protocol | |
6594 | uses for errors and errno codes. We would like a cleaner way | |
6595 | of representing errors (big enough to include errno codes, | |
6596 | bfd_error codes, and others). But for now just return | |
6597 | EIO. */ | |
6598 | errno = EIO; | |
6599 | return 0; | |
c906108c | 6600 | } |
f7605bc2 PA |
6601 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6602 | characters. */ | |
6603 | p = rs->buf; | |
6604 | i = hex2bin (p, myaddr, todo); | |
6605 | /* Return what we have. Let higher layers handle partial reads. */ | |
6606 | return i; | |
c906108c | 6607 | } |
74531fed PA |
6608 | \f |
6609 | ||
6610 | /* Remote notification handler. */ | |
6611 | ||
6612 | static void | |
6613 | handle_notification (char *buf, size_t length) | |
6614 | { | |
6615 | if (strncmp (buf, "Stop:", 5) == 0) | |
6616 | { | |
6617 | if (pending_stop_reply) | |
0723dbf5 PA |
6618 | { |
6619 | /* We've already parsed the in-flight stop-reply, but the | |
6620 | stub for some reason thought we didn't, possibly due to | |
6621 | timeout on its side. Just ignore it. */ | |
6622 | if (remote_debug) | |
6623 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6624 | } | |
74531fed PA |
6625 | else |
6626 | { | |
6627 | struct cleanup *old_chain; | |
6628 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6629 | |
74531fed PA |
6630 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6631 | ||
6632 | remote_parse_stop_reply (buf + 5, reply); | |
6633 | ||
6634 | discard_cleanups (old_chain); | |
6635 | ||
6636 | /* Be careful to only set it after parsing, since an error | |
6637 | may be thrown then. */ | |
6638 | pending_stop_reply = reply; | |
6639 | ||
6640 | /* Notify the event loop there's a stop reply to acknowledge | |
6641 | and that there may be more events to fetch. */ | |
6642 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6643 | |
6644 | if (remote_debug) | |
6645 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6646 | } |
6647 | } | |
6648 | else | |
6649 | /* We ignore notifications we don't recognize, for compatibility | |
6650 | with newer stubs. */ | |
6651 | ; | |
6652 | } | |
6653 | ||
c906108c SS |
6654 | \f |
6655 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6656 | transferring to or from debugger address BUFFER. Write to inferior |
6657 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6658 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6659 | |
c906108c | 6660 | static int |
961cb7b5 | 6661 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6662 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6663 | struct target_ops *target) |
c906108c | 6664 | { |
4930751a C |
6665 | int res; |
6666 | ||
e6e4e701 | 6667 | set_remote_traceframe (); |
82f73884 PA |
6668 | set_general_thread (inferior_ptid); |
6669 | ||
4930751a | 6670 | if (should_write) |
b2182ed2 | 6671 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6672 | else |
b2182ed2 | 6673 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6674 | |
6675 | return res; | |
c906108c SS |
6676 | } |
6677 | ||
a76d924d DJ |
6678 | /* Sends a packet with content determined by the printf format string |
6679 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6680 | whether the packet was a success, a failure, or unknown. */ | |
6681 | ||
2c0b251b | 6682 | static enum packet_result |
a76d924d DJ |
6683 | remote_send_printf (const char *format, ...) |
6684 | { | |
6685 | struct remote_state *rs = get_remote_state (); | |
6686 | int max_size = get_remote_packet_size (); | |
a76d924d | 6687 | va_list ap; |
a744cf53 | 6688 | |
a76d924d DJ |
6689 | va_start (ap, format); |
6690 | ||
6691 | rs->buf[0] = '\0'; | |
6692 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6693 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6694 | |
6695 | if (putpkt (rs->buf) < 0) | |
6696 | error (_("Communication problem with target.")); | |
6697 | ||
6698 | rs->buf[0] = '\0'; | |
6699 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6700 | ||
6701 | return packet_check_result (rs->buf); | |
6702 | } | |
6703 | ||
6704 | static void | |
6705 | restore_remote_timeout (void *p) | |
6706 | { | |
6707 | int value = *(int *)p; | |
a744cf53 | 6708 | |
a76d924d DJ |
6709 | remote_timeout = value; |
6710 | } | |
6711 | ||
6712 | /* Flash writing can take quite some time. We'll set | |
6713 | effectively infinite timeout for flash operations. | |
6714 | In future, we'll need to decide on a better approach. */ | |
6715 | static const int remote_flash_timeout = 1000; | |
6716 | ||
6717 | static void | |
6718 | remote_flash_erase (struct target_ops *ops, | |
6719 | ULONGEST address, LONGEST length) | |
6720 | { | |
5af949e3 | 6721 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6722 | int saved_remote_timeout = remote_timeout; |
6723 | enum packet_result ret; | |
a76d924d DJ |
6724 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6725 | &saved_remote_timeout); | |
a744cf53 | 6726 | |
a76d924d DJ |
6727 | remote_timeout = remote_flash_timeout; |
6728 | ||
6729 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6730 | phex (address, addr_size), |
a76d924d DJ |
6731 | phex (length, 4)); |
6732 | switch (ret) | |
6733 | { | |
6734 | case PACKET_UNKNOWN: | |
6735 | error (_("Remote target does not support flash erase")); | |
6736 | case PACKET_ERROR: | |
6737 | error (_("Error erasing flash with vFlashErase packet")); | |
6738 | default: | |
6739 | break; | |
6740 | } | |
6741 | ||
6742 | do_cleanups (back_to); | |
6743 | } | |
6744 | ||
6745 | static LONGEST | |
6746 | remote_flash_write (struct target_ops *ops, | |
6747 | ULONGEST address, LONGEST length, | |
6748 | const gdb_byte *data) | |
6749 | { | |
6750 | int saved_remote_timeout = remote_timeout; | |
6751 | int ret; | |
6752 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6753 | &saved_remote_timeout); | |
6754 | ||
6755 | remote_timeout = remote_flash_timeout; | |
6756 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6757 | do_cleanups (back_to); | |
6758 | ||
6759 | return ret; | |
6760 | } | |
6761 | ||
6762 | static void | |
6763 | remote_flash_done (struct target_ops *ops) | |
6764 | { | |
6765 | int saved_remote_timeout = remote_timeout; | |
6766 | int ret; | |
6767 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6768 | &saved_remote_timeout); | |
6769 | ||
6770 | remote_timeout = remote_flash_timeout; | |
6771 | ret = remote_send_printf ("vFlashDone"); | |
6772 | do_cleanups (back_to); | |
6773 | ||
6774 | switch (ret) | |
6775 | { | |
6776 | case PACKET_UNKNOWN: | |
6777 | error (_("Remote target does not support vFlashDone")); | |
6778 | case PACKET_ERROR: | |
6779 | error (_("Error finishing flash operation")); | |
6780 | default: | |
6781 | break; | |
6782 | } | |
6783 | } | |
6784 | ||
c906108c | 6785 | static void |
fba45db2 | 6786 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6787 | { |
6788 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6789 | } | |
6790 | \f | |
6791 | /* Stuff for dealing with the packets which are part of this protocol. | |
6792 | See comment at top of file for details. */ | |
6793 | ||
0876f84a | 6794 | /* Read a single character from the remote end. */ |
c906108c SS |
6795 | |
6796 | static int | |
fba45db2 | 6797 | readchar (int timeout) |
c906108c SS |
6798 | { |
6799 | int ch; | |
6800 | ||
2cd58942 | 6801 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6802 | |
2acceee2 | 6803 | if (ch >= 0) |
0876f84a | 6804 | return ch; |
2acceee2 JM |
6805 | |
6806 | switch ((enum serial_rc) ch) | |
c906108c SS |
6807 | { |
6808 | case SERIAL_EOF: | |
ce5ce7ed | 6809 | pop_target (); |
8a3fe4f8 | 6810 | error (_("Remote connection closed")); |
2acceee2 | 6811 | /* no return */ |
c906108c | 6812 | case SERIAL_ERROR: |
4ac8c4da | 6813 | pop_target (); |
3e43a32a MS |
6814 | perror_with_name (_("Remote communication error. " |
6815 | "Target disconnected.")); | |
2acceee2 | 6816 | /* no return */ |
c906108c | 6817 | case SERIAL_TIMEOUT: |
2acceee2 | 6818 | break; |
c906108c | 6819 | } |
2acceee2 | 6820 | return ch; |
c906108c SS |
6821 | } |
6822 | ||
6d820c5c DJ |
6823 | /* Send the command in *BUF to the remote machine, and read the reply |
6824 | into *BUF. Report an error if we get an error reply. Resize | |
6825 | *BUF using xrealloc if necessary to hold the result, and update | |
6826 | *SIZEOF_BUF. */ | |
c906108c SS |
6827 | |
6828 | static void | |
6d820c5c DJ |
6829 | remote_send (char **buf, |
6830 | long *sizeof_buf) | |
c906108c | 6831 | { |
6d820c5c | 6832 | putpkt (*buf); |
c2d11a7d | 6833 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6834 | |
6d820c5c DJ |
6835 | if ((*buf)[0] == 'E') |
6836 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6837 | } |
6838 | ||
6e5abd65 PA |
6839 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6840 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6841 | etc. The caller is responsible for releasing the returned | |
6842 | memory. */ | |
6843 | ||
6844 | static char * | |
6845 | escape_buffer (const char *buf, int n) | |
6846 | { | |
6847 | struct cleanup *old_chain; | |
6848 | struct ui_file *stb; | |
6849 | char *str; | |
6e5abd65 PA |
6850 | |
6851 | stb = mem_fileopen (); | |
6852 | old_chain = make_cleanup_ui_file_delete (stb); | |
6853 | ||
6854 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6855 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6856 | do_cleanups (old_chain); |
6857 | return str; | |
6858 | } | |
6859 | ||
c906108c SS |
6860 | /* Display a null-terminated packet on stdout, for debugging, using C |
6861 | string notation. */ | |
6862 | ||
6863 | static void | |
fba45db2 | 6864 | print_packet (char *buf) |
c906108c SS |
6865 | { |
6866 | puts_filtered ("\""); | |
43e526b9 | 6867 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6868 | puts_filtered ("\""); |
6869 | } | |
6870 | ||
6871 | int | |
fba45db2 | 6872 | putpkt (char *buf) |
c906108c SS |
6873 | { |
6874 | return putpkt_binary (buf, strlen (buf)); | |
6875 | } | |
6876 | ||
6877 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6878 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6879 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6880 | and for a possible /0 if we are debugging (remote_debug) and want |
6881 | to print the sent packet as a string. */ | |
c906108c SS |
6882 | |
6883 | static int | |
fba45db2 | 6884 | putpkt_binary (char *buf, int cnt) |
c906108c | 6885 | { |
2d717e4f | 6886 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6887 | int i; |
6888 | unsigned char csum = 0; | |
11cf8741 | 6889 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6890 | |
c906108c SS |
6891 | int ch; |
6892 | int tcount = 0; | |
6893 | char *p; | |
6894 | ||
e24a49d8 PA |
6895 | /* Catch cases like trying to read memory or listing threads while |
6896 | we're waiting for a stop reply. The remote server wouldn't be | |
6897 | ready to handle this request, so we'd hang and timeout. We don't | |
6898 | have to worry about this in synchronous mode, because in that | |
6899 | case it's not possible to issue a command while the target is | |
74531fed PA |
6900 | running. This is not a problem in non-stop mode, because in that |
6901 | case, the stub is always ready to process serial input. */ | |
6902 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6903 | error (_("Cannot execute this command while the target is running.")); |
6904 | ||
2d717e4f DJ |
6905 | /* We're sending out a new packet. Make sure we don't look at a |
6906 | stale cached response. */ | |
6907 | rs->cached_wait_status = 0; | |
6908 | ||
c906108c SS |
6909 | /* Copy the packet into buffer BUF2, encapsulating it |
6910 | and giving it a checksum. */ | |
6911 | ||
c906108c SS |
6912 | p = buf2; |
6913 | *p++ = '$'; | |
6914 | ||
6915 | for (i = 0; i < cnt; i++) | |
6916 | { | |
6917 | csum += buf[i]; | |
6918 | *p++ = buf[i]; | |
6919 | } | |
6920 | *p++ = '#'; | |
6921 | *p++ = tohex ((csum >> 4) & 0xf); | |
6922 | *p++ = tohex (csum & 0xf); | |
6923 | ||
6924 | /* Send it over and over until we get a positive ack. */ | |
6925 | ||
6926 | while (1) | |
6927 | { | |
6928 | int started_error_output = 0; | |
6929 | ||
6930 | if (remote_debug) | |
6931 | { | |
6e5abd65 PA |
6932 | struct cleanup *old_chain; |
6933 | char *str; | |
6934 | ||
c906108c | 6935 | *p = '\0'; |
6e5abd65 PA |
6936 | str = escape_buffer (buf2, p - buf2); |
6937 | old_chain = make_cleanup (xfree, str); | |
6938 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6939 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6940 | do_cleanups (old_chain); |
c906108c | 6941 | } |
2cd58942 | 6942 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6943 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6944 | |
a6f3e723 SL |
6945 | /* If this is a no acks version of the remote protocol, send the |
6946 | packet and move on. */ | |
6947 | if (rs->noack_mode) | |
6948 | break; | |
6949 | ||
74531fed PA |
6950 | /* Read until either a timeout occurs (-2) or '+' is read. |
6951 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6952 | while (1) |
6953 | { | |
6954 | ch = readchar (remote_timeout); | |
6955 | ||
c5aa993b | 6956 | if (remote_debug) |
c906108c SS |
6957 | { |
6958 | switch (ch) | |
6959 | { | |
6960 | case '+': | |
1216fa2c | 6961 | case '-': |
c906108c SS |
6962 | case SERIAL_TIMEOUT: |
6963 | case '$': | |
74531fed | 6964 | case '%': |
c906108c SS |
6965 | if (started_error_output) |
6966 | { | |
6967 | putchar_unfiltered ('\n'); | |
6968 | started_error_output = 0; | |
6969 | } | |
6970 | } | |
6971 | } | |
6972 | ||
6973 | switch (ch) | |
6974 | { | |
6975 | case '+': | |
6976 | if (remote_debug) | |
0f71a2f6 | 6977 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6978 | return 1; |
1216fa2c AC |
6979 | case '-': |
6980 | if (remote_debug) | |
6981 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 6982 | /* FALLTHROUGH */ |
c906108c | 6983 | case SERIAL_TIMEOUT: |
c5aa993b | 6984 | tcount++; |
c906108c SS |
6985 | if (tcount > 3) |
6986 | return 0; | |
23860348 | 6987 | break; /* Retransmit buffer. */ |
c906108c SS |
6988 | case '$': |
6989 | { | |
40e3f985 | 6990 | if (remote_debug) |
2bc416ba | 6991 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6992 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6993 | /* It's probably an old response sent because an ACK |
6994 | was lost. Gobble up the packet and ack it so it | |
6995 | doesn't get retransmitted when we resend this | |
6996 | packet. */ | |
6d820c5c | 6997 | skip_frame (); |
d6f7abdf | 6998 | serial_write (remote_desc, "+", 1); |
23860348 | 6999 | continue; /* Now, go look for +. */ |
c906108c | 7000 | } |
74531fed PA |
7001 | |
7002 | case '%': | |
7003 | { | |
7004 | int val; | |
7005 | ||
7006 | /* If we got a notification, handle it, and go back to looking | |
7007 | for an ack. */ | |
7008 | /* We've found the start of a notification. Now | |
7009 | collect the data. */ | |
7010 | val = read_frame (&rs->buf, &rs->buf_size); | |
7011 | if (val >= 0) | |
7012 | { | |
7013 | if (remote_debug) | |
7014 | { | |
6e5abd65 PA |
7015 | struct cleanup *old_chain; |
7016 | char *str; | |
7017 | ||
7018 | str = escape_buffer (rs->buf, val); | |
7019 | old_chain = make_cleanup (xfree, str); | |
7020 | fprintf_unfiltered (gdb_stdlog, | |
7021 | " Notification received: %s\n", | |
7022 | str); | |
7023 | do_cleanups (old_chain); | |
74531fed PA |
7024 | } |
7025 | handle_notification (rs->buf, val); | |
7026 | /* We're in sync now, rewait for the ack. */ | |
7027 | tcount = 0; | |
7028 | } | |
7029 | else | |
7030 | { | |
7031 | if (remote_debug) | |
7032 | { | |
7033 | if (!started_error_output) | |
7034 | { | |
7035 | started_error_output = 1; | |
7036 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
7037 | } | |
7038 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
7039 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
7040 | } | |
7041 | } | |
7042 | continue; | |
7043 | } | |
7044 | /* fall-through */ | |
c906108c SS |
7045 | default: |
7046 | if (remote_debug) | |
7047 | { | |
7048 | if (!started_error_output) | |
7049 | { | |
7050 | started_error_output = 1; | |
0f71a2f6 | 7051 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 7052 | } |
0f71a2f6 | 7053 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
7054 | } |
7055 | continue; | |
7056 | } | |
23860348 | 7057 | break; /* Here to retransmit. */ |
c906108c SS |
7058 | } |
7059 | ||
7060 | #if 0 | |
7061 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
7062 | able to get out next time we call QUIT, without anything as |
7063 | violent as interrupt_query. If we want to provide a way out of | |
7064 | here without getting to the next QUIT, it should be based on | |
7065 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
7066 | if (quit_flag) |
7067 | { | |
7068 | quit_flag = 0; | |
7069 | interrupt_query (); | |
7070 | } | |
7071 | #endif | |
7072 | } | |
a6f3e723 | 7073 | return 0; |
c906108c SS |
7074 | } |
7075 | ||
6d820c5c DJ |
7076 | /* Come here after finding the start of a frame when we expected an |
7077 | ack. Do our best to discard the rest of this packet. */ | |
7078 | ||
7079 | static void | |
7080 | skip_frame (void) | |
7081 | { | |
7082 | int c; | |
7083 | ||
7084 | while (1) | |
7085 | { | |
7086 | c = readchar (remote_timeout); | |
7087 | switch (c) | |
7088 | { | |
7089 | case SERIAL_TIMEOUT: | |
7090 | /* Nothing we can do. */ | |
7091 | return; | |
7092 | case '#': | |
7093 | /* Discard the two bytes of checksum and stop. */ | |
7094 | c = readchar (remote_timeout); | |
7095 | if (c >= 0) | |
7096 | c = readchar (remote_timeout); | |
7097 | ||
7098 | return; | |
7099 | case '*': /* Run length encoding. */ | |
7100 | /* Discard the repeat count. */ | |
7101 | c = readchar (remote_timeout); | |
7102 | if (c < 0) | |
7103 | return; | |
7104 | break; | |
7105 | default: | |
7106 | /* A regular character. */ | |
7107 | break; | |
7108 | } | |
7109 | } | |
7110 | } | |
7111 | ||
c906108c | 7112 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7113 | into *BUF, verifying the checksum, length, and handling run-length |
7114 | compression. NUL terminate the buffer. If there is not enough room, | |
7115 | expand *BUF using xrealloc. | |
c906108c | 7116 | |
c2d11a7d JM |
7117 | Returns -1 on error, number of characters in buffer (ignoring the |
7118 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7119 | SERIAL status indications). */ |
c2d11a7d JM |
7120 | |
7121 | static long | |
6d820c5c DJ |
7122 | read_frame (char **buf_p, |
7123 | long *sizeof_buf) | |
c906108c SS |
7124 | { |
7125 | unsigned char csum; | |
c2d11a7d | 7126 | long bc; |
c906108c | 7127 | int c; |
6d820c5c | 7128 | char *buf = *buf_p; |
a6f3e723 | 7129 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7130 | |
7131 | csum = 0; | |
c2d11a7d | 7132 | bc = 0; |
c906108c SS |
7133 | |
7134 | while (1) | |
7135 | { | |
7136 | c = readchar (remote_timeout); | |
c906108c SS |
7137 | switch (c) |
7138 | { | |
7139 | case SERIAL_TIMEOUT: | |
7140 | if (remote_debug) | |
0f71a2f6 | 7141 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7142 | return -1; |
c906108c SS |
7143 | case '$': |
7144 | if (remote_debug) | |
0f71a2f6 JM |
7145 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7146 | gdb_stdlog); | |
23860348 | 7147 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7148 | case '#': |
7149 | { | |
7150 | unsigned char pktcsum; | |
e1b09194 AC |
7151 | int check_0 = 0; |
7152 | int check_1 = 0; | |
c906108c | 7153 | |
c2d11a7d | 7154 | buf[bc] = '\0'; |
c906108c | 7155 | |
e1b09194 AC |
7156 | check_0 = readchar (remote_timeout); |
7157 | if (check_0 >= 0) | |
7158 | check_1 = readchar (remote_timeout); | |
802188a7 | 7159 | |
e1b09194 AC |
7160 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7161 | { | |
7162 | if (remote_debug) | |
2bc416ba | 7163 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7164 | gdb_stdlog); |
e1b09194 AC |
7165 | return -1; |
7166 | } | |
7167 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7168 | { |
7169 | if (remote_debug) | |
2bc416ba | 7170 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7171 | gdb_stdlog); |
40e3f985 FN |
7172 | return -1; |
7173 | } | |
c906108c | 7174 | |
a6f3e723 SL |
7175 | /* Don't recompute the checksum; with no ack packets we |
7176 | don't have any way to indicate a packet retransmission | |
7177 | is necessary. */ | |
7178 | if (rs->noack_mode) | |
7179 | return bc; | |
7180 | ||
e1b09194 | 7181 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7182 | if (csum == pktcsum) |
c2d11a7d | 7183 | return bc; |
c906108c | 7184 | |
c5aa993b | 7185 | if (remote_debug) |
c906108c | 7186 | { |
6e5abd65 PA |
7187 | struct cleanup *old_chain; |
7188 | char *str; | |
7189 | ||
7190 | str = escape_buffer (buf, bc); | |
7191 | old_chain = make_cleanup (xfree, str); | |
7192 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7193 | "Bad checksum, sentsum=0x%x, " |
7194 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7195 | pktcsum, csum, str); |
7196 | do_cleanups (old_chain); | |
c906108c | 7197 | } |
c2d11a7d | 7198 | /* Number of characters in buffer ignoring trailing |
23860348 | 7199 | NULL. */ |
c2d11a7d | 7200 | return -1; |
c906108c | 7201 | } |
23860348 | 7202 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7203 | { |
7204 | int repeat; | |
c906108c | 7205 | |
a744cf53 | 7206 | csum += c; |
b4501125 AC |
7207 | c = readchar (remote_timeout); |
7208 | csum += c; | |
23860348 | 7209 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7210 | |
23860348 | 7211 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7212 | |
6d820c5c | 7213 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7214 | { |
6d820c5c DJ |
7215 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7216 | { | |
7217 | /* Make some more room in the buffer. */ | |
7218 | *sizeof_buf += repeat; | |
7219 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7220 | buf = *buf_p; | |
7221 | } | |
7222 | ||
c2d11a7d JM |
7223 | memset (&buf[bc], buf[bc - 1], repeat); |
7224 | bc += repeat; | |
c2c6d25f JM |
7225 | continue; |
7226 | } | |
7227 | ||
c2d11a7d | 7228 | buf[bc] = '\0'; |
6d820c5c | 7229 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7230 | return -1; |
c2c6d25f | 7231 | } |
c906108c | 7232 | default: |
6d820c5c | 7233 | if (bc >= *sizeof_buf - 1) |
c906108c | 7234 | { |
6d820c5c DJ |
7235 | /* Make some more room in the buffer. */ |
7236 | *sizeof_buf *= 2; | |
7237 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7238 | buf = *buf_p; | |
c906108c SS |
7239 | } |
7240 | ||
6d820c5c DJ |
7241 | buf[bc++] = c; |
7242 | csum += c; | |
7243 | continue; | |
c906108c SS |
7244 | } |
7245 | } | |
7246 | } | |
7247 | ||
7248 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7249 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7250 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7251 | rather than timing out; this is used (in synchronous mode) to wait | |
7252 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7253 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7254 | don't have to change all the calls to getpkt to deal with the | |
7255 | return value, because at the moment I don't know what the right | |
23860348 | 7256 | thing to do it for those. */ |
c906108c | 7257 | void |
6d820c5c DJ |
7258 | getpkt (char **buf, |
7259 | long *sizeof_buf, | |
c2d11a7d | 7260 | int forever) |
d9fcf2fb JM |
7261 | { |
7262 | int timed_out; | |
7263 | ||
7264 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7265 | } | |
7266 | ||
7267 | ||
7268 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7269 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7270 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7271 | rather than timing out; this is used (in synchronous mode) to wait | |
7272 | for a target that is is executing user code to stop. If FOREVER == | |
7273 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7274 | indication of this to the caller. Otherwise return the number of |
7275 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7276 | enough reason to return to the caller. */ | |
7277 | ||
3172dc30 | 7278 | static int |
74531fed PA |
7279 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7280 | int expecting_notif) | |
c906108c | 7281 | { |
2d717e4f | 7282 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7283 | int c; |
7284 | int tries; | |
7285 | int timeout; | |
df4b58fe | 7286 | int val = -1; |
c906108c | 7287 | |
2d717e4f DJ |
7288 | /* We're reading a new response. Make sure we don't look at a |
7289 | previously cached response. */ | |
7290 | rs->cached_wait_status = 0; | |
7291 | ||
6d820c5c | 7292 | strcpy (*buf, "timeout"); |
c906108c SS |
7293 | |
7294 | if (forever) | |
74531fed PA |
7295 | timeout = watchdog > 0 ? watchdog : -1; |
7296 | else if (expecting_notif) | |
7297 | timeout = 0; /* There should already be a char in the buffer. If | |
7298 | not, bail out. */ | |
c906108c SS |
7299 | else |
7300 | timeout = remote_timeout; | |
7301 | ||
7302 | #define MAX_TRIES 3 | |
7303 | ||
74531fed PA |
7304 | /* Process any number of notifications, and then return when |
7305 | we get a packet. */ | |
7306 | for (;;) | |
c906108c | 7307 | { |
74531fed PA |
7308 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7309 | times. */ | |
7310 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7311 | { |
74531fed PA |
7312 | /* This can loop forever if the remote side sends us |
7313 | characters continuously, but if it pauses, we'll get | |
7314 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7315 | we'll count that as a retry. | |
7316 | ||
7317 | Note that even when forever is set, we will only wait | |
7318 | forever prior to the start of a packet. After that, we | |
7319 | expect characters to arrive at a brisk pace. They should | |
7320 | show up within remote_timeout intervals. */ | |
7321 | do | |
7322 | c = readchar (timeout); | |
7323 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7324 | |
7325 | if (c == SERIAL_TIMEOUT) | |
7326 | { | |
74531fed PA |
7327 | if (expecting_notif) |
7328 | return -1; /* Don't complain, it's normal to not get | |
7329 | anything in this case. */ | |
7330 | ||
23860348 | 7331 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7332 | { |
2acceee2 | 7333 | QUIT; |
ce5ce7ed | 7334 | pop_target (); |
489eaeba | 7335 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7336 | } |
c906108c | 7337 | if (remote_debug) |
0f71a2f6 | 7338 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7339 | } |
74531fed PA |
7340 | else |
7341 | { | |
7342 | /* We've found the start of a packet or notification. | |
7343 | Now collect the data. */ | |
7344 | val = read_frame (buf, sizeof_buf); | |
7345 | if (val >= 0) | |
7346 | break; | |
7347 | } | |
7348 | ||
7349 | serial_write (remote_desc, "-", 1); | |
c906108c | 7350 | } |
c906108c | 7351 | |
74531fed PA |
7352 | if (tries > MAX_TRIES) |
7353 | { | |
7354 | /* We have tried hard enough, and just can't receive the | |
7355 | packet/notification. Give up. */ | |
7356 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7357 | |
74531fed PA |
7358 | /* Skip the ack char if we're in no-ack mode. */ |
7359 | if (!rs->noack_mode) | |
7360 | serial_write (remote_desc, "+", 1); | |
7361 | return -1; | |
7362 | } | |
c906108c | 7363 | |
74531fed PA |
7364 | /* If we got an ordinary packet, return that to our caller. */ |
7365 | if (c == '$') | |
c906108c SS |
7366 | { |
7367 | if (remote_debug) | |
43e526b9 | 7368 | { |
6e5abd65 PA |
7369 | struct cleanup *old_chain; |
7370 | char *str; | |
7371 | ||
7372 | str = escape_buffer (*buf, val); | |
7373 | old_chain = make_cleanup (xfree, str); | |
7374 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7375 | do_cleanups (old_chain); | |
43e526b9 | 7376 | } |
a6f3e723 SL |
7377 | |
7378 | /* Skip the ack char if we're in no-ack mode. */ | |
7379 | if (!rs->noack_mode) | |
7380 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7381 | return val; |
c906108c SS |
7382 | } |
7383 | ||
74531fed PA |
7384 | /* If we got a notification, handle it, and go back to looking |
7385 | for a packet. */ | |
7386 | else | |
7387 | { | |
7388 | gdb_assert (c == '%'); | |
7389 | ||
7390 | if (remote_debug) | |
7391 | { | |
6e5abd65 PA |
7392 | struct cleanup *old_chain; |
7393 | char *str; | |
7394 | ||
7395 | str = escape_buffer (*buf, val); | |
7396 | old_chain = make_cleanup (xfree, str); | |
7397 | fprintf_unfiltered (gdb_stdlog, | |
7398 | " Notification received: %s\n", | |
7399 | str); | |
7400 | do_cleanups (old_chain); | |
74531fed | 7401 | } |
c906108c | 7402 | |
74531fed | 7403 | handle_notification (*buf, val); |
c906108c | 7404 | |
74531fed | 7405 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7406 | |
74531fed PA |
7407 | if (expecting_notif) |
7408 | return -1; | |
7409 | } | |
7410 | } | |
7411 | } | |
7412 | ||
7413 | static int | |
7414 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7415 | { | |
7416 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7417 | } | |
7418 | ||
7419 | static int | |
7420 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7421 | { | |
7422 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7423 | } |
74531fed | 7424 | |
c906108c | 7425 | \f |
732f3f12 TT |
7426 | /* A helper function that just calls putpkt; for type correctness. */ |
7427 | ||
7428 | static int | |
7429 | putpkt_for_catch_errors (void *arg) | |
7430 | { | |
7431 | return putpkt (arg); | |
7432 | } | |
7433 | ||
c906108c | 7434 | static void |
7d85a9c0 | 7435 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7436 | { |
23860348 MS |
7437 | /* Use catch_errors so the user can quit from gdb even when we |
7438 | aren't on speaking terms with the remote system. */ | |
732f3f12 | 7439 | catch_errors (putpkt_for_catch_errors, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7440 | |
7441 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7442 | we do or not. For the existing stubs, kill is a noop. */ | |
7443 | target_mourn_inferior (); | |
7444 | } | |
7445 | ||
82f73884 PA |
7446 | static int |
7447 | remote_vkill (int pid, struct remote_state *rs) | |
7448 | { | |
7449 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7450 | return -1; | |
7451 | ||
7452 | /* Tell the remote target to detach. */ | |
7453 | sprintf (rs->buf, "vKill;%x", pid); | |
7454 | putpkt (rs->buf); | |
7455 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7456 | ||
7457 | if (packet_ok (rs->buf, | |
7458 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7459 | return 0; | |
7460 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7461 | return -1; | |
7462 | else | |
7463 | return 1; | |
7464 | } | |
7465 | ||
7466 | static void | |
7d85a9c0 | 7467 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7468 | { |
7469 | int res; | |
7470 | int pid = ptid_get_pid (inferior_ptid); | |
7471 | struct remote_state *rs = get_remote_state (); | |
7472 | ||
7473 | res = remote_vkill (pid, rs); | |
901f9912 | 7474 | if (res == -1 && !(rs->extended && remote_multi_process_p (rs))) |
82f73884 PA |
7475 | { |
7476 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7477 | to specify the pid. */ | |
7478 | ||
7479 | putpkt ("k"); | |
7480 | #if 0 | |
7481 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7482 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7483 | res = 1; | |
7484 | #else | |
7485 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7486 | we do or not. For the existing stubs, kill is a noop. */ | |
7487 | res = 0; | |
7488 | #endif | |
7489 | } | |
7490 | ||
7491 | if (res != 0) | |
7492 | error (_("Can't kill process")); | |
7493 | ||
82f73884 PA |
7494 | target_mourn_inferior (); |
7495 | } | |
7496 | ||
c906108c | 7497 | static void |
136d6dae | 7498 | remote_mourn (struct target_ops *ops) |
c906108c | 7499 | { |
136d6dae | 7500 | remote_mourn_1 (ops); |
c906108c SS |
7501 | } |
7502 | ||
c906108c SS |
7503 | /* Worker function for remote_mourn. */ |
7504 | static void | |
fba45db2 | 7505 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7506 | { |
7507 | unpush_target (target); | |
ce5ce7ed | 7508 | |
8a2492ee PA |
7509 | /* remote_close takes care of doing most of the clean up. */ |
7510 | generic_mourn_inferior (); | |
c906108c SS |
7511 | } |
7512 | ||
2d717e4f DJ |
7513 | static void |
7514 | extended_remote_mourn_1 (struct target_ops *target) | |
7515 | { | |
7516 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7517 | |
e24a49d8 PA |
7518 | /* In case we got here due to an error, but we're going to stay |
7519 | connected. */ | |
7520 | rs->waiting_for_stop_reply = 0; | |
7521 | ||
74531fed PA |
7522 | /* We're no longer interested in these events. */ |
7523 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7524 | ||
dc1981d7 PA |
7525 | /* If the current general thread belonged to the process we just |
7526 | detached from or has exited, the remote side current general | |
7527 | thread becomes undefined. Considering a case like this: | |
7528 | ||
7529 | - We just got here due to a detach. | |
7530 | - The process that we're detaching from happens to immediately | |
7531 | report a global breakpoint being hit in non-stop mode, in the | |
7532 | same thread we had selected before. | |
7533 | - GDB attaches to this process again. | |
7534 | - This event happens to be the next event we handle. | |
7535 | ||
7536 | GDB would consider that the current general thread didn't need to | |
7537 | be set on the stub side (with Hg), since for all it knew, | |
7538 | GENERAL_THREAD hadn't changed. | |
7539 | ||
7540 | Notice that although in all-stop mode, the remote server always | |
7541 | sets the current thread to the thread reporting the stop event, | |
7542 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7543 | not* change the current thread when reporting a breakpoint hit, | |
7544 | due to the decoupling of event reporting and event handling. | |
7545 | ||
7546 | To keep things simple, we always invalidate our notion of the | |
7547 | current thread. */ | |
7548 | record_currthread (minus_one_ptid); | |
7549 | ||
2d717e4f DJ |
7550 | /* Unlike "target remote", we do not want to unpush the target; then |
7551 | the next time the user says "run", we won't be connected. */ | |
7552 | ||
48aa3c27 PA |
7553 | /* Call common code to mark the inferior as not running. */ |
7554 | generic_mourn_inferior (); | |
7555 | ||
d729566a | 7556 | if (!have_inferiors ()) |
2d717e4f | 7557 | { |
82f73884 PA |
7558 | if (!remote_multi_process_p (rs)) |
7559 | { | |
7560 | /* Check whether the target is running now - some remote stubs | |
7561 | automatically restart after kill. */ | |
7562 | putpkt ("?"); | |
7563 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7564 | ||
7565 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7566 | { | |
3e43a32a MS |
7567 | /* Assume that the target has been restarted. Set |
7568 | inferior_ptid so that bits of core GDB realizes | |
7569 | there's something here, e.g., so that the user can | |
7570 | say "kill" again. */ | |
82f73884 PA |
7571 | inferior_ptid = magic_null_ptid; |
7572 | } | |
82f73884 | 7573 | } |
2d717e4f DJ |
7574 | } |
7575 | } | |
c906108c SS |
7576 | |
7577 | static void | |
136d6dae | 7578 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7579 | { |
136d6dae | 7580 | extended_remote_mourn_1 (ops); |
2d717e4f | 7581 | } |
c906108c | 7582 | |
03583c20 UW |
7583 | static int |
7584 | extended_remote_supports_disable_randomization (void) | |
7585 | { | |
7586 | return (remote_protocol_packets[PACKET_QDisableRandomization].support | |
7587 | == PACKET_ENABLE); | |
7588 | } | |
7589 | ||
7590 | static void | |
7591 | extended_remote_disable_randomization (int val) | |
7592 | { | |
7593 | struct remote_state *rs = get_remote_state (); | |
7594 | char *reply; | |
7595 | ||
7596 | sprintf (rs->buf, "QDisableRandomization:%x", val); | |
7597 | putpkt (rs->buf); | |
7598 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
7599 | if (*reply == '\0') | |
7600 | error (_("Target does not support QDisableRandomization.")); | |
7601 | if (strcmp (reply, "OK") != 0) | |
7602 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
7603 | } | |
7604 | ||
2d717e4f DJ |
7605 | static int |
7606 | extended_remote_run (char *args) | |
7607 | { | |
7608 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7609 | int len; |
c906108c | 7610 | |
2d717e4f DJ |
7611 | /* If the user has disabled vRun support, or we have detected that |
7612 | support is not available, do not try it. */ | |
7613 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7614 | return -1; | |
424163ea | 7615 | |
2d717e4f DJ |
7616 | strcpy (rs->buf, "vRun;"); |
7617 | len = strlen (rs->buf); | |
c906108c | 7618 | |
2d717e4f DJ |
7619 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7620 | error (_("Remote file name too long for run packet")); | |
7621 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7622 | ||
d1a41061 | 7623 | gdb_assert (args != NULL); |
2d717e4f DJ |
7624 | if (*args) |
7625 | { | |
7626 | struct cleanup *back_to; | |
7627 | int i; | |
7628 | char **argv; | |
7629 | ||
d1a41061 | 7630 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7631 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7632 | for (i = 0; argv[i] != NULL; i++) | |
7633 | { | |
7634 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7635 | error (_("Argument list too long for run packet")); | |
7636 | rs->buf[len++] = ';'; | |
7637 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7638 | } | |
7639 | do_cleanups (back_to); | |
7640 | } | |
7641 | ||
7642 | rs->buf[len++] = '\0'; | |
7643 | ||
7644 | putpkt (rs->buf); | |
7645 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7646 | ||
7647 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7648 | { | |
7649 | /* We have a wait response; we don't need it, though. All is well. */ | |
7650 | return 0; | |
7651 | } | |
7652 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7653 | /* It wasn't disabled before, but it is now. */ | |
7654 | return -1; | |
7655 | else | |
7656 | { | |
7657 | if (remote_exec_file[0] == '\0') | |
7658 | error (_("Running the default executable on the remote target failed; " | |
7659 | "try \"set remote exec-file\"?")); | |
7660 | else | |
7661 | error (_("Running \"%s\" on the remote target failed"), | |
7662 | remote_exec_file); | |
7663 | } | |
c906108c SS |
7664 | } |
7665 | ||
2d717e4f DJ |
7666 | /* In the extended protocol we want to be able to do things like |
7667 | "run" and have them basically work as expected. So we need | |
7668 | a special create_inferior function. We support changing the | |
7669 | executable file and the command line arguments, but not the | |
7670 | environment. */ | |
7671 | ||
43ff13b4 | 7672 | static void |
2d717e4f | 7673 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7674 | char **env, int from_tty) |
43ff13b4 | 7675 | { |
43ff13b4 | 7676 | /* If running asynchronously, register the target file descriptor |
23860348 | 7677 | with the event loop. */ |
75c99385 | 7678 | if (target_can_async_p ()) |
2acceee2 | 7679 | target_async (inferior_event_handler, 0); |
43ff13b4 | 7680 | |
03583c20 UW |
7681 | /* Disable address space randomization if requested (and supported). */ |
7682 | if (extended_remote_supports_disable_randomization ()) | |
7683 | extended_remote_disable_randomization (disable_randomization); | |
7684 | ||
43ff13b4 | 7685 | /* Now restart the remote server. */ |
2d717e4f DJ |
7686 | if (extended_remote_run (args) == -1) |
7687 | { | |
7688 | /* vRun was not supported. Fail if we need it to do what the | |
7689 | user requested. */ | |
7690 | if (remote_exec_file[0]) | |
7691 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7692 | if (args[0]) | |
7693 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7694 | |
2d717e4f DJ |
7695 | /* Fall back to "R". */ |
7696 | extended_remote_restart (); | |
7697 | } | |
424163ea | 7698 | |
6c95b8df PA |
7699 | if (!have_inferiors ()) |
7700 | { | |
7701 | /* Clean up from the last time we ran, before we mark the target | |
7702 | running again. This will mark breakpoints uninserted, and | |
7703 | get_offsets may insert breakpoints. */ | |
7704 | init_thread_list (); | |
7705 | init_wait_for_inferior (); | |
7706 | } | |
45280a52 | 7707 | |
49c62f2e | 7708 | add_current_inferior_and_thread (); |
c0a2216e | 7709 | |
2d717e4f DJ |
7710 | /* Get updated offsets, if the stub uses qOffsets. */ |
7711 | get_offsets (); | |
2d717e4f DJ |
7712 | } |
7713 | ||
7714 | static void | |
136d6dae VP |
7715 | extended_remote_create_inferior (struct target_ops *ops, |
7716 | char *exec_file, char *args, | |
2d717e4f DJ |
7717 | char **env, int from_tty) |
7718 | { | |
75c99385 | 7719 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7720 | } |
c906108c | 7721 | \f |
c5aa993b | 7722 | |
b775012e LM |
7723 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
7724 | the list of conditions (in agent expression bytecode format), if any, the | |
7725 | target needs to evaluate. The output is placed into the packet buffer | |
7726 | BUF. */ | |
7727 | ||
7728 | static int | |
7729 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
7730 | struct bp_target_info *bp_tgt, char *buf) | |
7731 | { | |
7732 | struct agent_expr *aexpr = NULL; | |
7733 | int i, ix; | |
7734 | char *pkt; | |
7735 | char *buf_start = buf; | |
7736 | ||
7737 | if (VEC_empty (agent_expr_p, bp_tgt->conditions)) | |
7738 | return 0; | |
7739 | ||
7740 | buf += strlen (buf); | |
7741 | sprintf (buf, "%s", ";"); | |
7742 | buf++; | |
7743 | ||
7744 | /* Send conditions to the target and free the vector. */ | |
7745 | for (ix = 0; | |
7746 | VEC_iterate (agent_expr_p, bp_tgt->conditions, ix, aexpr); | |
7747 | ix++) | |
7748 | { | |
7749 | sprintf (buf, "X%x,", aexpr->len); | |
7750 | buf += strlen (buf); | |
7751 | for (i = 0; i < aexpr->len; ++i) | |
7752 | buf = pack_hex_byte (buf, aexpr->buf[i]); | |
7753 | *buf = '\0'; | |
7754 | } | |
7755 | ||
7756 | VEC_free (agent_expr_p, bp_tgt->conditions); | |
7757 | return 0; | |
7758 | } | |
7759 | ||
8181d85f DJ |
7760 | /* Insert a breakpoint. On targets that have software breakpoint |
7761 | support, we ask the remote target to do the work; on targets | |
7762 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7763 | |
7764 | static int | |
a6d9a66e UW |
7765 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7766 | struct bp_target_info *bp_tgt) | |
c906108c | 7767 | { |
d471ea57 AC |
7768 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7769 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7770 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7771 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7772 | |
444abaca | 7773 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7774 | { |
7c0f6dcc | 7775 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7776 | struct remote_state *rs; |
7777 | char *p; | |
7c0f6dcc | 7778 | int bpsize; |
b775012e | 7779 | struct condition_list *cond = NULL; |
4fff2411 | 7780 | |
a1dcb23a | 7781 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7782 | |
7783 | rs = get_remote_state (); | |
7784 | p = rs->buf; | |
802188a7 | 7785 | |
96baa820 JM |
7786 | *(p++) = 'Z'; |
7787 | *(p++) = '0'; | |
7788 | *(p++) = ','; | |
7c0f6dcc | 7789 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7790 | p += hexnumstr (p, addr); |
7c0f6dcc | 7791 | sprintf (p, ",%d", bpsize); |
802188a7 | 7792 | |
b775012e LM |
7793 | if (remote_supports_cond_breakpoints ()) |
7794 | remote_add_target_side_condition (gdbarch, bp_tgt, p); | |
7795 | ||
6d820c5c DJ |
7796 | putpkt (rs->buf); |
7797 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7798 | |
6d820c5c | 7799 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7800 | { |
d471ea57 AC |
7801 | case PACKET_ERROR: |
7802 | return -1; | |
7803 | case PACKET_OK: | |
7c0f6dcc JL |
7804 | bp_tgt->placed_address = addr; |
7805 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7806 | return 0; |
7807 | case PACKET_UNKNOWN: | |
7808 | break; | |
96baa820 JM |
7809 | } |
7810 | } | |
c906108c | 7811 | |
a6d9a66e | 7812 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7813 | } |
7814 | ||
7815 | static int | |
a6d9a66e UW |
7816 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7817 | struct bp_target_info *bp_tgt) | |
c906108c | 7818 | { |
8181d85f | 7819 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7820 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7821 | |
444abaca | 7822 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7823 | { |
6d820c5c | 7824 | char *p = rs->buf; |
802188a7 | 7825 | |
96baa820 JM |
7826 | *(p++) = 'z'; |
7827 | *(p++) = '0'; | |
7828 | *(p++) = ','; | |
7829 | ||
8181d85f DJ |
7830 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7831 | p += hexnumstr (p, addr); | |
7832 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7833 | |
6d820c5c DJ |
7834 | putpkt (rs->buf); |
7835 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7836 | |
6d820c5c | 7837 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7838 | } |
7839 | ||
a6d9a66e | 7840 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7841 | } |
7842 | ||
d471ea57 AC |
7843 | static int |
7844 | watchpoint_to_Z_packet (int type) | |
7845 | { | |
7846 | switch (type) | |
7847 | { | |
7848 | case hw_write: | |
bb858e6a | 7849 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7850 | break; |
7851 | case hw_read: | |
bb858e6a | 7852 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7853 | break; |
7854 | case hw_access: | |
bb858e6a | 7855 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7856 | break; |
7857 | default: | |
8e65ff28 | 7858 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7859 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7860 | } |
7861 | } | |
7862 | ||
3c3bea1c | 7863 | static int |
0cf6dd15 TJB |
7864 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7865 | struct expression *cond) | |
96baa820 | 7866 | { |
d01949b6 | 7867 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7868 | char *p; |
d471ea57 | 7869 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7870 | |
444abaca | 7871 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7872 | return 1; |
802188a7 | 7873 | |
6d820c5c DJ |
7874 | sprintf (rs->buf, "Z%x,", packet); |
7875 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7876 | addr = remote_address_masked (addr); |
7877 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7878 | sprintf (p, ",%x", len); |
802188a7 | 7879 | |
6d820c5c DJ |
7880 | putpkt (rs->buf); |
7881 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7882 | |
6d820c5c | 7883 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7884 | { |
7885 | case PACKET_ERROR: | |
d471ea57 | 7886 | return -1; |
85d721b8 PA |
7887 | case PACKET_UNKNOWN: |
7888 | return 1; | |
d471ea57 AC |
7889 | case PACKET_OK: |
7890 | return 0; | |
7891 | } | |
8e65ff28 | 7892 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7893 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7894 | } |
7895 | ||
283002cf MR |
7896 | static int |
7897 | remote_watchpoint_addr_within_range (struct target_ops *target, CORE_ADDR addr, | |
7898 | CORE_ADDR start, int length) | |
7899 | { | |
7900 | CORE_ADDR diff = remote_address_masked (addr - start); | |
7901 | ||
7902 | return diff < length; | |
7903 | } | |
7904 | ||
d471ea57 | 7905 | |
3c3bea1c | 7906 | static int |
0cf6dd15 TJB |
7907 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
7908 | struct expression *cond) | |
96baa820 | 7909 | { |
d01949b6 | 7910 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7911 | char *p; |
d471ea57 AC |
7912 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7913 | ||
444abaca | 7914 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 7915 | return -1; |
802188a7 | 7916 | |
6d820c5c DJ |
7917 | sprintf (rs->buf, "z%x,", packet); |
7918 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7919 | addr = remote_address_masked (addr); |
7920 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7921 | sprintf (p, ",%x", len); |
6d820c5c DJ |
7922 | putpkt (rs->buf); |
7923 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7924 | |
6d820c5c | 7925 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7926 | { |
7927 | case PACKET_ERROR: | |
7928 | case PACKET_UNKNOWN: | |
7929 | return -1; | |
7930 | case PACKET_OK: | |
7931 | return 0; | |
7932 | } | |
8e65ff28 | 7933 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7934 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7935 | } |
7936 | ||
3c3bea1c | 7937 | |
501eef12 | 7938 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 7939 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 7940 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 7941 | |
480a3f21 PW |
7942 | static int |
7943 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
7944 | { | |
7945 | if (remote_hw_watchpoint_length_limit == 0) | |
7946 | return 0; | |
7947 | else if (remote_hw_watchpoint_length_limit < 0) | |
7948 | return 1; | |
7949 | else if (len <= remote_hw_watchpoint_length_limit) | |
7950 | return 1; | |
7951 | else | |
7952 | return 0; | |
7953 | } | |
7954 | ||
b9362cc7 | 7955 | static int |
3c3bea1c | 7956 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7957 | { |
3c3bea1c GS |
7958 | if (type == bp_hardware_breakpoint) |
7959 | { | |
7960 | if (remote_hw_breakpoint_limit == 0) | |
7961 | return 0; | |
501eef12 AC |
7962 | else if (remote_hw_breakpoint_limit < 0) |
7963 | return 1; | |
3c3bea1c GS |
7964 | else if (cnt <= remote_hw_breakpoint_limit) |
7965 | return 1; | |
7966 | } | |
7967 | else | |
7968 | { | |
7969 | if (remote_hw_watchpoint_limit == 0) | |
7970 | return 0; | |
501eef12 AC |
7971 | else if (remote_hw_watchpoint_limit < 0) |
7972 | return 1; | |
3c3bea1c GS |
7973 | else if (ot) |
7974 | return -1; | |
7975 | else if (cnt <= remote_hw_watchpoint_limit) | |
7976 | return 1; | |
7977 | } | |
7978 | return -1; | |
7979 | } | |
7980 | ||
b9362cc7 | 7981 | static int |
3c3bea1c GS |
7982 | remote_stopped_by_watchpoint (void) |
7983 | { | |
82f73884 | 7984 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7985 | } |
7986 | ||
4aa7a7f5 JJ |
7987 | static int |
7988 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7989 | { |
4aa7a7f5 | 7990 | int rc = 0; |
a744cf53 | 7991 | |
d983da9c | 7992 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7993 | { |
7994 | *addr_p = remote_watch_data_address; | |
7995 | rc = 1; | |
7996 | } | |
7997 | ||
7998 | return rc; | |
3c3bea1c GS |
7999 | } |
8000 | ||
8001 | ||
8002 | static int | |
a6d9a66e UW |
8003 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
8004 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 8005 | { |
8181d85f | 8006 | CORE_ADDR addr; |
4fff2411 JZ |
8007 | struct remote_state *rs; |
8008 | char *p; | |
802188a7 | 8009 | |
c8189ed1 | 8010 | /* The length field should be set to the size of a breakpoint |
8181d85f | 8011 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 8012 | |
a1dcb23a | 8013 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 8014 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 8015 | |
444abaca | 8016 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8017 | return -1; |
2bc416ba | 8018 | |
4fff2411 JZ |
8019 | rs = get_remote_state (); |
8020 | p = rs->buf; | |
8021 | ||
96baa820 JM |
8022 | *(p++) = 'Z'; |
8023 | *(p++) = '1'; | |
8024 | *(p++) = ','; | |
802188a7 | 8025 | |
8181d85f | 8026 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8027 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 8028 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 8029 | |
b775012e LM |
8030 | if (remote_supports_cond_breakpoints ()) |
8031 | remote_add_target_side_condition (gdbarch, bp_tgt, p); | |
8032 | ||
6d820c5c DJ |
8033 | putpkt (rs->buf); |
8034 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 8035 | |
6d820c5c | 8036 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8037 | { |
8038 | case PACKET_ERROR: | |
8039 | case PACKET_UNKNOWN: | |
8040 | return -1; | |
8041 | case PACKET_OK: | |
8042 | return 0; | |
8043 | } | |
8e65ff28 | 8044 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8045 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
8046 | } |
8047 | ||
d471ea57 | 8048 | |
802188a7 | 8049 | static int |
a6d9a66e UW |
8050 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
8051 | struct bp_target_info *bp_tgt) | |
96baa820 | 8052 | { |
8181d85f | 8053 | CORE_ADDR addr; |
d01949b6 | 8054 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 8055 | char *p = rs->buf; |
c8189ed1 | 8056 | |
444abaca | 8057 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 8058 | return -1; |
802188a7 | 8059 | |
96baa820 JM |
8060 | *(p++) = 'z'; |
8061 | *(p++) = '1'; | |
8062 | *(p++) = ','; | |
802188a7 | 8063 | |
8181d85f | 8064 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 8065 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 8066 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 8067 | |
6d820c5c DJ |
8068 | putpkt (rs->buf); |
8069 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 8070 | |
6d820c5c | 8071 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
8072 | { |
8073 | case PACKET_ERROR: | |
8074 | case PACKET_UNKNOWN: | |
8075 | return -1; | |
8076 | case PACKET_OK: | |
8077 | return 0; | |
8078 | } | |
8e65ff28 | 8079 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8080 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 8081 | } |
96baa820 | 8082 | |
23860348 | 8083 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 8084 | |
c5aa993b JM |
8085 | static unsigned long crc32_table[256] = |
8086 | {0, 0}; | |
c906108c SS |
8087 | |
8088 | static unsigned long | |
4a5e7a5b | 8089 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 8090 | { |
c5aa993b | 8091 | if (!crc32_table[1]) |
c906108c | 8092 | { |
23860348 | 8093 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
8094 | int i, j; |
8095 | unsigned int c; | |
8096 | ||
8097 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
8098 | { |
8099 | for (c = i << 24, j = 8; j > 0; --j) | |
8100 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
8101 | crc32_table[i] = c; | |
8102 | } | |
c906108c SS |
8103 | } |
8104 | ||
8105 | while (len--) | |
8106 | { | |
8107 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
8108 | buf++; | |
8109 | } | |
8110 | return crc; | |
8111 | } | |
8112 | ||
4a5e7a5b PA |
8113 | /* Verify memory using the "qCRC:" request. */ |
8114 | ||
8115 | static int | |
8116 | remote_verify_memory (struct target_ops *ops, | |
8117 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
8118 | { | |
8119 | struct remote_state *rs = get_remote_state (); | |
8120 | unsigned long host_crc, target_crc; | |
8121 | char *tmp; | |
8122 | ||
8123 | /* FIXME: assumes lma can fit into long. */ | |
8124 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
8125 | (long) lma, (long) size); | |
8126 | putpkt (rs->buf); | |
8127 | ||
8128 | /* Be clever; compute the host_crc before waiting for target | |
8129 | reply. */ | |
8130 | host_crc = crc32 (data, size, 0xffffffff); | |
8131 | ||
8132 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8133 | if (rs->buf[0] == 'E') | |
8134 | return -1; | |
8135 | ||
8136 | if (rs->buf[0] != 'C') | |
8137 | error (_("remote target does not support this operation")); | |
8138 | ||
8139 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
8140 | target_crc = target_crc * 16 + fromhex (*tmp); | |
8141 | ||
8142 | return (host_crc == target_crc); | |
8143 | } | |
8144 | ||
c906108c SS |
8145 | /* compare-sections command |
8146 | ||
8147 | With no arguments, compares each loadable section in the exec bfd | |
8148 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 8149 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 8150 | |
c906108c | 8151 | static void |
fba45db2 | 8152 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
8153 | { |
8154 | asection *s; | |
c906108c | 8155 | struct cleanup *old_chain; |
085dd6e6 | 8156 | char *sectdata; |
ce359b09 | 8157 | const char *sectname; |
c906108c SS |
8158 | bfd_size_type size; |
8159 | bfd_vma lma; | |
8160 | int matched = 0; | |
8161 | int mismatched = 0; | |
4a5e7a5b | 8162 | int res; |
c906108c SS |
8163 | |
8164 | if (!exec_bfd) | |
8a3fe4f8 | 8165 | error (_("command cannot be used without an exec file")); |
c906108c | 8166 | |
c5aa993b | 8167 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
8168 | { |
8169 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 8170 | continue; /* Skip non-loadable section. */ |
c906108c | 8171 | |
2c500098 | 8172 | size = bfd_get_section_size (s); |
c906108c | 8173 | if (size == 0) |
0df8b418 | 8174 | continue; /* Skip zero-length section. */ |
c906108c | 8175 | |
ce359b09 | 8176 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8177 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8178 | continue; /* Not the section selected by user. */ |
c906108c | 8179 | |
0df8b418 | 8180 | matched = 1; /* Do this section. */ |
c906108c | 8181 | lma = s->lma; |
c906108c | 8182 | |
c906108c | 8183 | sectdata = xmalloc (size); |
b8c9b27d | 8184 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8185 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8186 | |
4a5e7a5b PA |
8187 | res = target_verify_memory (sectdata, lma, size); |
8188 | ||
8189 | if (res == -1) | |
5af949e3 UW |
8190 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8191 | paddress (target_gdbarch, lma), | |
8192 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8193 | |
5af949e3 UW |
8194 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8195 | paddress (target_gdbarch, lma), | |
8196 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8197 | if (res) |
c906108c SS |
8198 | printf_filtered ("matched.\n"); |
8199 | else | |
c5aa993b JM |
8200 | { |
8201 | printf_filtered ("MIS-MATCHED!\n"); | |
8202 | mismatched++; | |
8203 | } | |
c906108c SS |
8204 | |
8205 | do_cleanups (old_chain); | |
8206 | } | |
8207 | if (mismatched > 0) | |
8a3fe4f8 AC |
8208 | warning (_("One or more sections of the remote executable does not match\n\ |
8209 | the loaded file\n")); | |
c906108c | 8210 | if (args && !matched) |
a3f17187 | 8211 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8212 | } |
8213 | ||
0e7f50da UW |
8214 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8215 | into remote target. The number of bytes written to the remote | |
8216 | target is returned, or -1 for error. */ | |
8217 | ||
8218 | static LONGEST | |
8219 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8220 | const char *annex, const gdb_byte *writebuf, | |
8221 | ULONGEST offset, LONGEST len, | |
8222 | struct packet_config *packet) | |
8223 | { | |
8224 | int i, buf_len; | |
8225 | ULONGEST n; | |
0e7f50da UW |
8226 | struct remote_state *rs = get_remote_state (); |
8227 | int max_size = get_memory_write_packet_size (); | |
8228 | ||
8229 | if (packet->support == PACKET_DISABLE) | |
8230 | return -1; | |
8231 | ||
8232 | /* Insert header. */ | |
8233 | i = snprintf (rs->buf, max_size, | |
8234 | "qXfer:%s:write:%s:%s:", | |
8235 | object_name, annex ? annex : "", | |
8236 | phex_nz (offset, sizeof offset)); | |
8237 | max_size -= (i + 1); | |
8238 | ||
8239 | /* Escape as much data as fits into rs->buf. */ | |
8240 | buf_len = remote_escape_output | |
8241 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8242 | ||
8243 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8244 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8245 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8246 | return -1; | |
8247 | ||
8248 | unpack_varlen_hex (rs->buf, &n); | |
8249 | return n; | |
8250 | } | |
8251 | ||
0876f84a DJ |
8252 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8253 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8254 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8255 | The number of bytes read may be less than LEN without indicating an | |
8256 | EOF. PACKET is checked and updated to indicate whether the remote | |
8257 | target supports this object. */ | |
8258 | ||
8259 | static LONGEST | |
8260 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8261 | const char *annex, | |
8262 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8263 | struct packet_config *packet) | |
8264 | { | |
8265 | static char *finished_object; | |
8266 | static char *finished_annex; | |
8267 | static ULONGEST finished_offset; | |
8268 | ||
8269 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8270 | LONGEST i, n, packet_len; |
8271 | ||
8272 | if (packet->support == PACKET_DISABLE) | |
8273 | return -1; | |
8274 | ||
8275 | /* Check whether we've cached an end-of-object packet that matches | |
8276 | this request. */ | |
8277 | if (finished_object) | |
8278 | { | |
8279 | if (strcmp (object_name, finished_object) == 0 | |
8280 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8281 | && offset == finished_offset) | |
8282 | return 0; | |
8283 | ||
8284 | /* Otherwise, we're now reading something different. Discard | |
8285 | the cache. */ | |
8286 | xfree (finished_object); | |
8287 | xfree (finished_annex); | |
8288 | finished_object = NULL; | |
8289 | finished_annex = NULL; | |
8290 | } | |
8291 | ||
8292 | /* Request only enough to fit in a single packet. The actual data | |
8293 | may not, since we don't know how much of it will need to be escaped; | |
8294 | the target is free to respond with slightly less data. We subtract | |
8295 | five to account for the response type and the protocol frame. */ | |
8296 | n = min (get_remote_packet_size () - 5, len); | |
8297 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8298 | object_name, annex ? annex : "", | |
8299 | phex_nz (offset, sizeof offset), | |
8300 | phex_nz (n, sizeof n)); | |
8301 | i = putpkt (rs->buf); | |
8302 | if (i < 0) | |
8303 | return -1; | |
8304 | ||
8305 | rs->buf[0] = '\0'; | |
8306 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8307 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8308 | return -1; | |
8309 | ||
8310 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8311 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8312 | ||
8313 | /* 'm' means there is (or at least might be) more data after this | |
8314 | batch. That does not make sense unless there's at least one byte | |
8315 | of data in this reply. */ | |
8316 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8317 | error (_("Remote qXfer reply contained no data.")); | |
8318 | ||
8319 | /* Got some data. */ | |
8320 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8321 | ||
8322 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8323 | or possibly empty. If we have the final block of a non-empty |
8324 | object, record this fact to bypass a subsequent partial read. */ | |
8325 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8326 | { |
8327 | finished_object = xstrdup (object_name); | |
8328 | finished_annex = xstrdup (annex ? annex : ""); | |
8329 | finished_offset = offset + i; | |
8330 | } | |
8331 | ||
8332 | return i; | |
8333 | } | |
8334 | ||
1e3ff5ad | 8335 | static LONGEST |
4b8a223f | 8336 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8337 | const char *annex, gdb_byte *readbuf, |
8338 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8339 | { |
82f73884 | 8340 | struct remote_state *rs; |
c906108c | 8341 | int i; |
6d820c5c | 8342 | char *p2; |
1e3ff5ad | 8343 | char query_type; |
c906108c | 8344 | |
e6e4e701 | 8345 | set_remote_traceframe (); |
82f73884 PA |
8346 | set_general_thread (inferior_ptid); |
8347 | ||
8348 | rs = get_remote_state (); | |
8349 | ||
b2182ed2 | 8350 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8351 | if (object == TARGET_OBJECT_MEMORY) |
8352 | { | |
8353 | int xfered; | |
a744cf53 | 8354 | |
21e3b9b9 DJ |
8355 | errno = 0; |
8356 | ||
2d717e4f DJ |
8357 | /* If the remote target is connected but not running, we should |
8358 | pass this request down to a lower stratum (e.g. the executable | |
8359 | file). */ | |
8360 | if (!target_has_execution) | |
8361 | return 0; | |
8362 | ||
21e3b9b9 | 8363 | if (writebuf != NULL) |
b2182ed2 | 8364 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8365 | else |
b2182ed2 | 8366 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8367 | |
8368 | if (xfered > 0) | |
8369 | return xfered; | |
8370 | else if (xfered == 0 && errno == 0) | |
8371 | return 0; | |
8372 | else | |
8373 | return -1; | |
8374 | } | |
8375 | ||
0df8b418 | 8376 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8377 | if (object == TARGET_OBJECT_SPU) |
8378 | { | |
8379 | if (readbuf) | |
8380 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8381 | &remote_protocol_packets | |
8382 | [PACKET_qXfer_spu_read]); | |
8383 | else | |
8384 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8385 | &remote_protocol_packets | |
8386 | [PACKET_qXfer_spu_write]); | |
8387 | } | |
8388 | ||
4aa995e1 PA |
8389 | /* Handle extra signal info using qxfer packets. */ |
8390 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8391 | { | |
8392 | if (readbuf) | |
8393 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8394 | &remote_protocol_packets | |
8395 | [PACKET_qXfer_siginfo_read]); | |
8396 | else | |
3e43a32a MS |
8397 | return remote_write_qxfer (ops, "siginfo", annex, |
8398 | writebuf, offset, len, | |
4aa995e1 PA |
8399 | &remote_protocol_packets |
8400 | [PACKET_qXfer_siginfo_write]); | |
8401 | } | |
8402 | ||
0fb4aa4b PA |
8403 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8404 | { | |
8405 | if (readbuf) | |
3e43a32a MS |
8406 | return remote_read_qxfer (ops, "statictrace", annex, |
8407 | readbuf, offset, len, | |
0fb4aa4b PA |
8408 | &remote_protocol_packets |
8409 | [PACKET_qXfer_statictrace_read]); | |
8410 | else | |
8411 | return -1; | |
8412 | } | |
8413 | ||
a76d924d DJ |
8414 | /* Only handle flash writes. */ |
8415 | if (writebuf != NULL) | |
8416 | { | |
8417 | LONGEST xfered; | |
8418 | ||
8419 | switch (object) | |
8420 | { | |
8421 | case TARGET_OBJECT_FLASH: | |
8422 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8423 | ||
8424 | if (xfered > 0) | |
8425 | return xfered; | |
8426 | else if (xfered == 0 && errno == 0) | |
8427 | return 0; | |
8428 | else | |
8429 | return -1; | |
8430 | ||
8431 | default: | |
8432 | return -1; | |
8433 | } | |
8434 | } | |
4b8a223f | 8435 | |
1e3ff5ad AC |
8436 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8437 | objects!!! Instead specify new query packets. */ | |
8438 | switch (object) | |
c906108c | 8439 | { |
1e3ff5ad AC |
8440 | case TARGET_OBJECT_AVR: |
8441 | query_type = 'R'; | |
8442 | break; | |
802188a7 RM |
8443 | |
8444 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8445 | gdb_assert (annex == NULL); |
8446 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8447 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8448 | |
23181151 DJ |
8449 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8450 | return remote_read_qxfer | |
8451 | (ops, "features", annex, readbuf, offset, len, | |
8452 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8453 | ||
cfa9d6d9 DJ |
8454 | case TARGET_OBJECT_LIBRARIES: |
8455 | return remote_read_qxfer | |
8456 | (ops, "libraries", annex, readbuf, offset, len, | |
8457 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8458 | ||
2268b414 JK |
8459 | case TARGET_OBJECT_LIBRARIES_SVR4: |
8460 | return remote_read_qxfer | |
8461 | (ops, "libraries-svr4", annex, readbuf, offset, len, | |
8462 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); | |
8463 | ||
fd79ecee DJ |
8464 | case TARGET_OBJECT_MEMORY_MAP: |
8465 | gdb_assert (annex == NULL); | |
8466 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8467 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8468 | ||
07e059b5 VP |
8469 | case TARGET_OBJECT_OSDATA: |
8470 | /* Should only get here if we're connected. */ | |
8471 | gdb_assert (remote_desc); | |
8472 | return remote_read_qxfer | |
8473 | (ops, "osdata", annex, readbuf, offset, len, | |
8474 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8475 | ||
dc146f7c VP |
8476 | case TARGET_OBJECT_THREADS: |
8477 | gdb_assert (annex == NULL); | |
8478 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8479 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8480 | ||
b3b9301e PA |
8481 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8482 | gdb_assert (annex == NULL); | |
8483 | return remote_read_qxfer | |
8484 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8485 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
78d85199 YQ |
8486 | |
8487 | case TARGET_OBJECT_FDPIC: | |
8488 | return remote_read_qxfer (ops, "fdpic", annex, readbuf, offset, len, | |
8489 | &remote_protocol_packets[PACKET_qXfer_fdpic]); | |
169081d0 TG |
8490 | |
8491 | case TARGET_OBJECT_OPENVMS_UIB: | |
8492 | return remote_read_qxfer (ops, "uib", annex, readbuf, offset, len, | |
8493 | &remote_protocol_packets[PACKET_qXfer_uib]); | |
8494 | ||
1e3ff5ad | 8495 | default: |
c906108c SS |
8496 | return -1; |
8497 | } | |
8498 | ||
4b8a223f | 8499 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8500 | buffer size. */ |
4b8a223f | 8501 | if (offset == 0 && len == 0) |
ea9c271d | 8502 | return (get_remote_packet_size ()); |
0df8b418 | 8503 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8504 | large enough let the caller deal with it. */ |
ea9c271d | 8505 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8506 | return -1; |
ea9c271d | 8507 | len = get_remote_packet_size (); |
1e3ff5ad | 8508 | |
23860348 | 8509 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8510 | if (!remote_desc) |
8a3fe4f8 | 8511 | error (_("remote query is only available after target open")); |
c906108c | 8512 | |
1e3ff5ad | 8513 | gdb_assert (annex != NULL); |
4b8a223f | 8514 | gdb_assert (readbuf != NULL); |
c906108c | 8515 | |
6d820c5c | 8516 | p2 = rs->buf; |
c906108c SS |
8517 | *p2++ = 'q'; |
8518 | *p2++ = query_type; | |
8519 | ||
23860348 MS |
8520 | /* We used one buffer char for the remote protocol q command and |
8521 | another for the query type. As the remote protocol encapsulation | |
8522 | uses 4 chars plus one extra in case we are debugging | |
8523 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8524 | string. */ | |
c906108c | 8525 | i = 0; |
ea9c271d | 8526 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8527 | { |
1e3ff5ad AC |
8528 | /* Bad caller may have sent forbidden characters. */ |
8529 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8530 | *p2++ = annex[i]; | |
c906108c SS |
8531 | i++; |
8532 | } | |
1e3ff5ad AC |
8533 | *p2 = '\0'; |
8534 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8535 | |
6d820c5c | 8536 | i = putpkt (rs->buf); |
c5aa993b JM |
8537 | if (i < 0) |
8538 | return i; | |
c906108c | 8539 | |
6d820c5c DJ |
8540 | getpkt (&rs->buf, &rs->buf_size, 0); |
8541 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8542 | |
cfd77fa1 | 8543 | return strlen ((char *) readbuf); |
c906108c SS |
8544 | } |
8545 | ||
08388c79 DE |
8546 | static int |
8547 | remote_search_memory (struct target_ops* ops, | |
8548 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8549 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8550 | CORE_ADDR *found_addrp) | |
8551 | { | |
5af949e3 | 8552 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8553 | struct remote_state *rs = get_remote_state (); |
8554 | int max_size = get_memory_write_packet_size (); | |
8555 | struct packet_config *packet = | |
8556 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8557 | /* Number of packet bytes used to encode the pattern; |
8558 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8559 | int escaped_pattern_len; |
0df8b418 | 8560 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8561 | int used_pattern_len; |
8562 | int i; | |
8563 | int found; | |
8564 | ULONGEST found_addr; | |
8565 | ||
8566 | /* Don't go to the target if we don't have to. | |
8567 | This is done before checking packet->support to avoid the possibility that | |
8568 | a success for this edge case means the facility works in general. */ | |
8569 | if (pattern_len > search_space_len) | |
8570 | return 0; | |
8571 | if (pattern_len == 0) | |
8572 | { | |
8573 | *found_addrp = start_addr; | |
8574 | return 1; | |
8575 | } | |
8576 | ||
8577 | /* If we already know the packet isn't supported, fall back to the simple | |
8578 | way of searching memory. */ | |
8579 | ||
8580 | if (packet->support == PACKET_DISABLE) | |
8581 | { | |
8582 | /* Target doesn't provided special support, fall back and use the | |
8583 | standard support (copy memory and do the search here). */ | |
8584 | return simple_search_memory (ops, start_addr, search_space_len, | |
8585 | pattern, pattern_len, found_addrp); | |
8586 | } | |
8587 | ||
8588 | /* Insert header. */ | |
8589 | i = snprintf (rs->buf, max_size, | |
8590 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8591 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8592 | phex_nz (search_space_len, sizeof (search_space_len))); |
8593 | max_size -= (i + 1); | |
8594 | ||
8595 | /* Escape as much data as fits into rs->buf. */ | |
8596 | escaped_pattern_len = | |
8597 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8598 | &used_pattern_len, max_size); | |
8599 | ||
8600 | /* Bail if the pattern is too large. */ | |
8601 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8602 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8603 | |
8604 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8605 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8606 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8607 | { | |
8608 | /* The request may not have worked because the command is not | |
8609 | supported. If so, fall back to the simple way. */ | |
8610 | if (packet->support == PACKET_DISABLE) | |
8611 | { | |
8612 | return simple_search_memory (ops, start_addr, search_space_len, | |
8613 | pattern, pattern_len, found_addrp); | |
8614 | } | |
8615 | return -1; | |
8616 | } | |
8617 | ||
8618 | if (rs->buf[0] == '0') | |
8619 | found = 0; | |
8620 | else if (rs->buf[0] == '1') | |
8621 | { | |
8622 | found = 1; | |
8623 | if (rs->buf[1] != ',') | |
10e0fa18 | 8624 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8625 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8626 | *found_addrp = found_addr; | |
8627 | } | |
8628 | else | |
10e0fa18 | 8629 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8630 | |
8631 | return found; | |
8632 | } | |
8633 | ||
96baa820 JM |
8634 | static void |
8635 | remote_rcmd (char *command, | |
d9fcf2fb | 8636 | struct ui_file *outbuf) |
96baa820 | 8637 | { |
d01949b6 | 8638 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8639 | char *p = rs->buf; |
96baa820 JM |
8640 | |
8641 | if (!remote_desc) | |
8a3fe4f8 | 8642 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8643 | |
23860348 | 8644 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8645 | if (command == NULL) |
8646 | command = ""; | |
8647 | ||
23860348 | 8648 | /* The query prefix. */ |
2e9f7625 DJ |
8649 | strcpy (rs->buf, "qRcmd,"); |
8650 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8651 | |
3e43a32a MS |
8652 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8653 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8654 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8655 | |
23860348 | 8656 | /* Encode the actual command. */ |
cfd77fa1 | 8657 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8658 | |
6d820c5c | 8659 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8660 | error (_("Communication problem with target.")); |
96baa820 JM |
8661 | |
8662 | /* get/display the response */ | |
8663 | while (1) | |
8664 | { | |
2e9f7625 DJ |
8665 | char *buf; |
8666 | ||
00bf0b85 | 8667 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 8668 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 8669 | rs->buf[0] = '\0'; |
5b37825d PW |
8670 | if (getpkt_sane (&rs->buf, &rs->buf_size, 0) == -1) |
8671 | { | |
8672 | /* Timeout. Continue to (try to) read responses. | |
8673 | This is better than stopping with an error, assuming the stub | |
8674 | is still executing the (long) monitor command. | |
8675 | If needed, the user can interrupt gdb using C-c, obtaining | |
8676 | an effect similar to stop on timeout. */ | |
8677 | continue; | |
8678 | } | |
2e9f7625 | 8679 | buf = rs->buf; |
96baa820 | 8680 | if (buf[0] == '\0') |
8a3fe4f8 | 8681 | error (_("Target does not support this command.")); |
96baa820 JM |
8682 | if (buf[0] == 'O' && buf[1] != 'K') |
8683 | { | |
23860348 | 8684 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8685 | continue; |
8686 | } | |
8687 | if (strcmp (buf, "OK") == 0) | |
8688 | break; | |
7be570e7 JM |
8689 | if (strlen (buf) == 3 && buf[0] == 'E' |
8690 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8691 | { | |
8a3fe4f8 | 8692 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8693 | } |
96baa820 JM |
8694 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8695 | { | |
8696 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8697 | |
96baa820 JM |
8698 | fputc_unfiltered (c, outbuf); |
8699 | } | |
8700 | break; | |
8701 | } | |
8702 | } | |
8703 | ||
fd79ecee DJ |
8704 | static VEC(mem_region_s) * |
8705 | remote_memory_map (struct target_ops *ops) | |
8706 | { | |
8707 | VEC(mem_region_s) *result = NULL; | |
8708 | char *text = target_read_stralloc (¤t_target, | |
8709 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8710 | ||
8711 | if (text) | |
8712 | { | |
8713 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8714 | |
fd79ecee DJ |
8715 | result = parse_memory_map (text); |
8716 | do_cleanups (back_to); | |
8717 | } | |
8718 | ||
8719 | return result; | |
8720 | } | |
8721 | ||
c906108c | 8722 | static void |
fba45db2 | 8723 | packet_command (char *args, int from_tty) |
c906108c | 8724 | { |
d01949b6 | 8725 | struct remote_state *rs = get_remote_state (); |
c906108c | 8726 | |
c5aa993b | 8727 | if (!remote_desc) |
8a3fe4f8 | 8728 | error (_("command can only be used with remote target")); |
c906108c | 8729 | |
c5aa993b | 8730 | if (!args) |
8a3fe4f8 | 8731 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8732 | |
8733 | puts_filtered ("sending: "); | |
8734 | print_packet (args); | |
8735 | puts_filtered ("\n"); | |
8736 | putpkt (args); | |
8737 | ||
6d820c5c | 8738 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8739 | puts_filtered ("received: "); |
6d820c5c | 8740 | print_packet (rs->buf); |
c906108c SS |
8741 | puts_filtered ("\n"); |
8742 | } | |
8743 | ||
8744 | #if 0 | |
23860348 | 8745 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8746 | |
a14ed312 | 8747 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8748 | |
a14ed312 | 8749 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8750 | |
a14ed312 | 8751 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8752 | |
a14ed312 | 8753 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8754 | |
23860348 | 8755 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8756 | |
a14ed312 | 8757 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8758 | |
23860348 | 8759 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8760 | |
a14ed312 | 8761 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8762 | |
a14ed312 | 8763 | static void init_remote_threadtests (void); |
c906108c | 8764 | |
23860348 | 8765 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8766 | |
8767 | static void | |
fba45db2 | 8768 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8769 | { |
8770 | int sample_thread = SAMPLE_THREAD; | |
8771 | ||
a3f17187 | 8772 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8773 | set_general_thread (sample_thread); |
c906108c SS |
8774 | } |
8775 | ||
8776 | ||
8777 | static void | |
fba45db2 | 8778 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8779 | { |
8780 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8781 | int pid = ptid_get_pid (inferior_ptid); |
8782 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8783 | |
79d7f229 | 8784 | if (remote_thread_alive (ptid)) |
c906108c SS |
8785 | printf_filtered ("PASS: Thread alive test\n"); |
8786 | else | |
8787 | printf_filtered ("FAIL: Thread alive test\n"); | |
8788 | } | |
8789 | ||
23860348 | 8790 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8791 | |
8792 | void | |
fba45db2 | 8793 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8794 | { |
8795 | char hexid[20]; | |
8796 | ||
23860348 | 8797 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8798 | hexid[16] = 0; |
8799 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8800 | } | |
8801 | ||
8802 | static void | |
fba45db2 | 8803 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8804 | { |
8805 | int startflag = 1; | |
8806 | threadref nextthread; | |
8807 | int done, result_count; | |
8808 | threadref threadlist[3]; | |
8809 | ||
8810 | printf_filtered ("Remote Threadlist test\n"); | |
8811 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8812 | &result_count, &threadlist[0])) | |
8813 | printf_filtered ("FAIL: threadlist test\n"); | |
8814 | else | |
8815 | { | |
8816 | threadref *scan = threadlist; | |
8817 | threadref *limit = scan + result_count; | |
8818 | ||
8819 | while (scan < limit) | |
8820 | output_threadid (" thread ", scan++); | |
8821 | } | |
8822 | } | |
8823 | ||
8824 | void | |
fba45db2 | 8825 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8826 | { |
8827 | output_threadid ("Threadid: ", &info->threadid); | |
8828 | printf_filtered ("Name: %s\n ", info->shortname); | |
8829 | printf_filtered ("State: %s\n", info->display); | |
8830 | printf_filtered ("other: %s\n\n", info->more_display); | |
8831 | } | |
8832 | ||
8833 | int | |
fba45db2 | 8834 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8835 | { |
8836 | int result; | |
8837 | int set; | |
8838 | struct gdb_ext_thread_info threadinfo; | |
8839 | ||
8840 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8841 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8842 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8843 | display_thread_info (&threadinfo); | |
8844 | return result; | |
8845 | } | |
8846 | ||
8847 | static void | |
fba45db2 | 8848 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8849 | { |
8850 | int athread = SAMPLE_THREAD; | |
8851 | threadref thread; | |
8852 | int set; | |
8853 | ||
8854 | int_to_threadref (&thread, athread); | |
8855 | printf_filtered ("Remote Threadinfo test\n"); | |
8856 | if (!get_and_display_threadinfo (&thread)) | |
8857 | printf_filtered ("FAIL cannot get thread info\n"); | |
8858 | } | |
8859 | ||
8860 | static int | |
fba45db2 | 8861 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8862 | { |
8863 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8864 | return get_and_display_threadinfo (ref); | |
8865 | } | |
8866 | ||
8867 | static void | |
fba45db2 | 8868 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8869 | { |
8870 | printf_filtered ("Remote Threadlist update test\n"); | |
8871 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8872 | } | |
8873 | ||
8874 | static void | |
8875 | init_remote_threadtests (void) | |
8876 | { | |
3e43a32a MS |
8877 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8878 | _("Fetch and print the remote list of " | |
8879 | "thread identifiers, one pkt only")); | |
c906108c | 8880 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8881 | _("Fetch and display info about one thread")); |
c906108c | 8882 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8883 | _("Test setting to a different thread")); |
c906108c | 8884 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8885 | _("Iterate through updating all remote thread info")); |
c906108c | 8886 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8887 | _(" Remote thread alive test ")); |
c906108c SS |
8888 | } |
8889 | ||
8890 | #endif /* 0 */ | |
8891 | ||
f3fb8c85 MS |
8892 | /* Convert a thread ID to a string. Returns the string in a static |
8893 | buffer. */ | |
8894 | ||
8895 | static char * | |
117de6a9 | 8896 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8897 | { |
79d7f229 | 8898 | static char buf[64]; |
82f73884 | 8899 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8900 | |
7cee1e54 PA |
8901 | if (ptid_equal (ptid, null_ptid)) |
8902 | return normal_pid_to_str (ptid); | |
8903 | else if (ptid_is_pid (ptid)) | |
ecd0ada5 PA |
8904 | { |
8905 | /* Printing an inferior target id. */ | |
8906 | ||
8907 | /* When multi-process extensions are off, there's no way in the | |
8908 | remote protocol to know the remote process id, if there's any | |
8909 | at all. There's one exception --- when we're connected with | |
8910 | target extended-remote, and we manually attached to a process | |
8911 | with "attach PID". We don't record anywhere a flag that | |
8912 | allows us to distinguish that case from the case of | |
8913 | connecting with extended-remote and the stub already being | |
8914 | attached to a process, and reporting yes to qAttached, hence | |
8915 | no smart special casing here. */ | |
8916 | if (!remote_multi_process_p (rs)) | |
8917 | { | |
8918 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8919 | return buf; | |
8920 | } | |
8921 | ||
8922 | return normal_pid_to_str (ptid); | |
82f73884 | 8923 | } |
ecd0ada5 | 8924 | else |
79d7f229 | 8925 | { |
ecd0ada5 PA |
8926 | if (ptid_equal (magic_null_ptid, ptid)) |
8927 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
901f9912 | 8928 | else if (rs->extended && remote_multi_process_p (rs)) |
ecd0ada5 PA |
8929 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", |
8930 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8931 | else | |
8932 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8933 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8934 | return buf; |
8935 | } | |
f3fb8c85 MS |
8936 | } |
8937 | ||
38691318 KB |
8938 | /* Get the address of the thread local variable in OBJFILE which is |
8939 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8940 | ||
8941 | static CORE_ADDR | |
117de6a9 PA |
8942 | remote_get_thread_local_address (struct target_ops *ops, |
8943 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8944 | { |
444abaca | 8945 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8946 | { |
8947 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8948 | char *p = rs->buf; |
82f73884 | 8949 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8950 | enum packet_result result; |
38691318 KB |
8951 | |
8952 | strcpy (p, "qGetTLSAddr:"); | |
8953 | p += strlen (p); | |
82f73884 | 8954 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8955 | *p++ = ','; |
8956 | p += hexnumstr (p, offset); | |
8957 | *p++ = ','; | |
8958 | p += hexnumstr (p, lm); | |
8959 | *p++ = '\0'; | |
8960 | ||
6d820c5c DJ |
8961 | putpkt (rs->buf); |
8962 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8963 | result = packet_ok (rs->buf, |
8964 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8965 | if (result == PACKET_OK) |
38691318 KB |
8966 | { |
8967 | ULONGEST result; | |
8968 | ||
6d820c5c | 8969 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8970 | return result; |
8971 | } | |
571dd617 | 8972 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8973 | throw_error (TLS_GENERIC_ERROR, |
8974 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8975 | else |
109c3e39 AC |
8976 | throw_error (TLS_GENERIC_ERROR, |
8977 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8978 | } |
8979 | else | |
109c3e39 AC |
8980 | throw_error (TLS_GENERIC_ERROR, |
8981 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8982 | /* Not reached. */ |
8983 | return 0; | |
8984 | } | |
8985 | ||
711e434b PM |
8986 | /* Provide thread local base, i.e. Thread Information Block address. |
8987 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8988 | ||
70221824 | 8989 | static int |
711e434b PM |
8990 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
8991 | { | |
8992 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8993 | { | |
8994 | struct remote_state *rs = get_remote_state (); | |
8995 | char *p = rs->buf; | |
8996 | char *endp = rs->buf + get_remote_packet_size (); | |
8997 | enum packet_result result; | |
8998 | ||
8999 | strcpy (p, "qGetTIBAddr:"); | |
9000 | p += strlen (p); | |
9001 | p = write_ptid (p, endp, ptid); | |
9002 | *p++ = '\0'; | |
9003 | ||
9004 | putpkt (rs->buf); | |
9005 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9006 | result = packet_ok (rs->buf, | |
9007 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
9008 | if (result == PACKET_OK) | |
9009 | { | |
9010 | ULONGEST result; | |
9011 | ||
9012 | unpack_varlen_hex (rs->buf, &result); | |
9013 | if (addr) | |
9014 | *addr = (CORE_ADDR) result; | |
9015 | return 1; | |
9016 | } | |
9017 | else if (result == PACKET_UNKNOWN) | |
9018 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
9019 | else | |
9020 | error (_("Remote target failed to process qGetTIBAddr request")); | |
9021 | } | |
9022 | else | |
9023 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
9024 | /* Not reached. */ | |
9025 | return 0; | |
9026 | } | |
9027 | ||
29709017 DJ |
9028 | /* Support for inferring a target description based on the current |
9029 | architecture and the size of a 'g' packet. While the 'g' packet | |
9030 | can have any size (since optional registers can be left off the | |
9031 | end), some sizes are easily recognizable given knowledge of the | |
9032 | approximate architecture. */ | |
9033 | ||
9034 | struct remote_g_packet_guess | |
9035 | { | |
9036 | int bytes; | |
9037 | const struct target_desc *tdesc; | |
9038 | }; | |
9039 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
9040 | DEF_VEC_O(remote_g_packet_guess_s); | |
9041 | ||
9042 | struct remote_g_packet_data | |
9043 | { | |
9044 | VEC(remote_g_packet_guess_s) *guesses; | |
9045 | }; | |
9046 | ||
9047 | static struct gdbarch_data *remote_g_packet_data_handle; | |
9048 | ||
9049 | static void * | |
9050 | remote_g_packet_data_init (struct obstack *obstack) | |
9051 | { | |
9052 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
9053 | } | |
9054 | ||
9055 | void | |
9056 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
9057 | const struct target_desc *tdesc) | |
9058 | { | |
9059 | struct remote_g_packet_data *data | |
9060 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
9061 | struct remote_g_packet_guess new_guess, *guess; | |
9062 | int ix; | |
9063 | ||
9064 | gdb_assert (tdesc != NULL); | |
9065 | ||
9066 | for (ix = 0; | |
9067 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9068 | ix++) | |
9069 | if (guess->bytes == bytes) | |
9070 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9071 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
9072 | bytes); |
9073 | ||
9074 | new_guess.bytes = bytes; | |
9075 | new_guess.tdesc = tdesc; | |
9076 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
9077 | } | |
9078 | ||
d962ef82 DJ |
9079 | /* Return 1 if remote_read_description would do anything on this target |
9080 | and architecture, 0 otherwise. */ | |
9081 | ||
9082 | static int | |
9083 | remote_read_description_p (struct target_ops *target) | |
9084 | { | |
9085 | struct remote_g_packet_data *data | |
9086 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
9087 | ||
9088 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
9089 | return 1; | |
9090 | ||
9091 | return 0; | |
9092 | } | |
9093 | ||
29709017 DJ |
9094 | static const struct target_desc * |
9095 | remote_read_description (struct target_ops *target) | |
9096 | { | |
9097 | struct remote_g_packet_data *data | |
1cf3db46 | 9098 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 9099 | |
d962ef82 DJ |
9100 | /* Do not try this during initial connection, when we do not know |
9101 | whether there is a running but stopped thread. */ | |
9102 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
9103 | return NULL; | |
9104 | ||
29709017 DJ |
9105 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
9106 | { | |
9107 | struct remote_g_packet_guess *guess; | |
9108 | int ix; | |
9109 | int bytes = send_g_packet (); | |
9110 | ||
9111 | for (ix = 0; | |
9112 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
9113 | ix++) | |
9114 | if (guess->bytes == bytes) | |
9115 | return guess->tdesc; | |
9116 | ||
9117 | /* We discard the g packet. A minor optimization would be to | |
9118 | hold on to it, and fill the register cache once we have selected | |
9119 | an architecture, but it's too tricky to do safely. */ | |
9120 | } | |
9121 | ||
9122 | return NULL; | |
9123 | } | |
9124 | ||
a6b151f1 DJ |
9125 | /* Remote file transfer support. This is host-initiated I/O, not |
9126 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
9127 | ||
9128 | /* If *LEFT is at least the length of STRING, copy STRING to | |
9129 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9130 | decrease *LEFT. Otherwise raise an error. */ | |
9131 | ||
9132 | static void | |
9133 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
9134 | { | |
9135 | int len = strlen (string); | |
9136 | ||
9137 | if (len > *left) | |
9138 | error (_("Packet too long for target.")); | |
9139 | ||
9140 | memcpy (*buffer, string, len); | |
9141 | *buffer += len; | |
9142 | *left -= len; | |
9143 | ||
9144 | /* NUL-terminate the buffer as a convenience, if there is | |
9145 | room. */ | |
9146 | if (*left) | |
9147 | **buffer = '\0'; | |
9148 | } | |
9149 | ||
9150 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
9151 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9152 | decrease *LEFT. Otherwise raise an error. */ | |
9153 | ||
9154 | static void | |
9155 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
9156 | int len) | |
9157 | { | |
9158 | if (2 * len > *left) | |
9159 | error (_("Packet too long for target.")); | |
9160 | ||
9161 | bin2hex (bytes, *buffer, len); | |
9162 | *buffer += 2 * len; | |
9163 | *left -= 2 * len; | |
9164 | ||
9165 | /* NUL-terminate the buffer as a convenience, if there is | |
9166 | room. */ | |
9167 | if (*left) | |
9168 | **buffer = '\0'; | |
9169 | } | |
9170 | ||
9171 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
9172 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
9173 | decrease *LEFT. Otherwise raise an error. */ | |
9174 | ||
9175 | static void | |
9176 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
9177 | { | |
9178 | int len = hexnumlen (value); | |
9179 | ||
9180 | if (len > *left) | |
9181 | error (_("Packet too long for target.")); | |
9182 | ||
9183 | hexnumstr (*buffer, value); | |
9184 | *buffer += len; | |
9185 | *left -= len; | |
9186 | ||
9187 | /* NUL-terminate the buffer as a convenience, if there is | |
9188 | room. */ | |
9189 | if (*left) | |
9190 | **buffer = '\0'; | |
9191 | } | |
9192 | ||
9193 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
9194 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
9195 | was included, and *ATTACHMENT to point to the start of the annex | |
9196 | if any. The length of the packet isn't needed here; there may | |
9197 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
9198 | ||
9199 | Return 0 if the packet could be parsed, -1 if it could not. If | |
9200 | -1 is returned, the other variables may not be initialized. */ | |
9201 | ||
9202 | static int | |
9203 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9204 | int *remote_errno, char **attachment) | |
9205 | { | |
9206 | char *p, *p2; | |
9207 | ||
9208 | *remote_errno = 0; | |
9209 | *attachment = NULL; | |
9210 | ||
9211 | if (buffer[0] != 'F') | |
9212 | return -1; | |
9213 | ||
9214 | errno = 0; | |
9215 | *retcode = strtol (&buffer[1], &p, 16); | |
9216 | if (errno != 0 || p == &buffer[1]) | |
9217 | return -1; | |
9218 | ||
9219 | /* Check for ",errno". */ | |
9220 | if (*p == ',') | |
9221 | { | |
9222 | errno = 0; | |
9223 | *remote_errno = strtol (p + 1, &p2, 16); | |
9224 | if (errno != 0 || p + 1 == p2) | |
9225 | return -1; | |
9226 | p = p2; | |
9227 | } | |
9228 | ||
9229 | /* Check for ";attachment". If there is no attachment, the | |
9230 | packet should end here. */ | |
9231 | if (*p == ';') | |
9232 | { | |
9233 | *attachment = p + 1; | |
9234 | return 0; | |
9235 | } | |
9236 | else if (*p == '\0') | |
9237 | return 0; | |
9238 | else | |
9239 | return -1; | |
9240 | } | |
9241 | ||
9242 | /* Send a prepared I/O packet to the target and read its response. | |
9243 | The prepared packet is in the global RS->BUF before this function | |
9244 | is called, and the answer is there when we return. | |
9245 | ||
9246 | COMMAND_BYTES is the length of the request to send, which may include | |
9247 | binary data. WHICH_PACKET is the packet configuration to check | |
9248 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9249 | is set to the error number and -1 is returned. Otherwise the value | |
9250 | returned by the function is returned. | |
9251 | ||
9252 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9253 | attachment is expected; an error will be reported if there's a | |
9254 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9255 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9256 | attachment's length. */ | |
9257 | ||
9258 | static int | |
9259 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9260 | int *remote_errno, char **attachment, | |
9261 | int *attachment_len) | |
9262 | { | |
9263 | struct remote_state *rs = get_remote_state (); | |
9264 | int ret, bytes_read; | |
9265 | char *attachment_tmp; | |
9266 | ||
f1838a98 UW |
9267 | if (!remote_desc |
9268 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9269 | { |
9270 | *remote_errno = FILEIO_ENOSYS; | |
9271 | return -1; | |
9272 | } | |
9273 | ||
9274 | putpkt_binary (rs->buf, command_bytes); | |
9275 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9276 | ||
9277 | /* If it timed out, something is wrong. Don't try to parse the | |
9278 | buffer. */ | |
9279 | if (bytes_read < 0) | |
9280 | { | |
9281 | *remote_errno = FILEIO_EINVAL; | |
9282 | return -1; | |
9283 | } | |
9284 | ||
9285 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9286 | { | |
9287 | case PACKET_ERROR: | |
9288 | *remote_errno = FILEIO_EINVAL; | |
9289 | return -1; | |
9290 | case PACKET_UNKNOWN: | |
9291 | *remote_errno = FILEIO_ENOSYS; | |
9292 | return -1; | |
9293 | case PACKET_OK: | |
9294 | break; | |
9295 | } | |
9296 | ||
9297 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9298 | &attachment_tmp)) | |
9299 | { | |
9300 | *remote_errno = FILEIO_EINVAL; | |
9301 | return -1; | |
9302 | } | |
9303 | ||
9304 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9305 | if ((attachment_tmp == NULL && attachment != NULL) | |
9306 | || (attachment_tmp != NULL && attachment == NULL)) | |
9307 | { | |
9308 | *remote_errno = FILEIO_EINVAL; | |
9309 | return -1; | |
9310 | } | |
9311 | ||
9312 | /* If an attachment was found, it must point into the packet buffer; | |
9313 | work out how many bytes there were. */ | |
9314 | if (attachment_tmp != NULL) | |
9315 | { | |
9316 | *attachment = attachment_tmp; | |
9317 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9318 | } | |
9319 | ||
9320 | return ret; | |
9321 | } | |
9322 | ||
9323 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9324 | remote file descriptor, or -1 if an error occurs (and set | |
9325 | *REMOTE_ERRNO). */ | |
9326 | ||
9327 | static int | |
9328 | remote_hostio_open (const char *filename, int flags, int mode, | |
9329 | int *remote_errno) | |
9330 | { | |
9331 | struct remote_state *rs = get_remote_state (); | |
9332 | char *p = rs->buf; | |
9333 | int left = get_remote_packet_size () - 1; | |
9334 | ||
9335 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9336 | ||
9337 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9338 | strlen (filename)); | |
9339 | remote_buffer_add_string (&p, &left, ","); | |
9340 | ||
9341 | remote_buffer_add_int (&p, &left, flags); | |
9342 | remote_buffer_add_string (&p, &left, ","); | |
9343 | ||
9344 | remote_buffer_add_int (&p, &left, mode); | |
9345 | ||
9346 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9347 | remote_errno, NULL, NULL); | |
9348 | } | |
9349 | ||
9350 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9351 | Return the number of bytes written, or -1 if an error occurs (and | |
9352 | set *REMOTE_ERRNO). */ | |
9353 | ||
9354 | static int | |
9355 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9356 | ULONGEST offset, int *remote_errno) | |
9357 | { | |
9358 | struct remote_state *rs = get_remote_state (); | |
9359 | char *p = rs->buf; | |
9360 | int left = get_remote_packet_size (); | |
9361 | int out_len; | |
9362 | ||
9363 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9364 | ||
9365 | remote_buffer_add_int (&p, &left, fd); | |
9366 | remote_buffer_add_string (&p, &left, ","); | |
9367 | ||
9368 | remote_buffer_add_int (&p, &left, offset); | |
9369 | remote_buffer_add_string (&p, &left, ","); | |
9370 | ||
9371 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9372 | get_remote_packet_size () - (p - rs->buf)); | |
9373 | ||
9374 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9375 | remote_errno, NULL, NULL); | |
9376 | } | |
9377 | ||
9378 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9379 | Return the number of bytes read, or -1 if an error occurs (and | |
9380 | set *REMOTE_ERRNO). */ | |
9381 | ||
9382 | static int | |
9383 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9384 | ULONGEST offset, int *remote_errno) | |
9385 | { | |
9386 | struct remote_state *rs = get_remote_state (); | |
9387 | char *p = rs->buf; | |
9388 | char *attachment; | |
9389 | int left = get_remote_packet_size (); | |
9390 | int ret, attachment_len; | |
9391 | int read_len; | |
9392 | ||
9393 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9394 | ||
9395 | remote_buffer_add_int (&p, &left, fd); | |
9396 | remote_buffer_add_string (&p, &left, ","); | |
9397 | ||
9398 | remote_buffer_add_int (&p, &left, len); | |
9399 | remote_buffer_add_string (&p, &left, ","); | |
9400 | ||
9401 | remote_buffer_add_int (&p, &left, offset); | |
9402 | ||
9403 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9404 | remote_errno, &attachment, | |
9405 | &attachment_len); | |
9406 | ||
9407 | if (ret < 0) | |
9408 | return ret; | |
9409 | ||
9410 | read_len = remote_unescape_input (attachment, attachment_len, | |
9411 | read_buf, len); | |
9412 | if (read_len != ret) | |
9413 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9414 | ||
9415 | return ret; | |
9416 | } | |
9417 | ||
9418 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9419 | (and set *REMOTE_ERRNO). */ | |
9420 | ||
9421 | static int | |
9422 | remote_hostio_close (int fd, int *remote_errno) | |
9423 | { | |
9424 | struct remote_state *rs = get_remote_state (); | |
9425 | char *p = rs->buf; | |
9426 | int left = get_remote_packet_size () - 1; | |
9427 | ||
9428 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9429 | ||
9430 | remote_buffer_add_int (&p, &left, fd); | |
9431 | ||
9432 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9433 | remote_errno, NULL, NULL); | |
9434 | } | |
9435 | ||
9436 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9437 | occurs (and set *REMOTE_ERRNO). */ | |
9438 | ||
9439 | static int | |
9440 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9441 | { | |
9442 | struct remote_state *rs = get_remote_state (); | |
9443 | char *p = rs->buf; | |
9444 | int left = get_remote_packet_size () - 1; | |
9445 | ||
9446 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9447 | ||
9448 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9449 | strlen (filename)); | |
9450 | ||
9451 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9452 | remote_errno, NULL, NULL); | |
9453 | } | |
9454 | ||
b9e7b9c3 UW |
9455 | /* Read value of symbolic link FILENAME on the remote target. Return |
9456 | a null-terminated string allocated via xmalloc, or NULL if an error | |
9457 | occurs (and set *REMOTE_ERRNO). */ | |
9458 | ||
9459 | static char * | |
9460 | remote_hostio_readlink (const char *filename, int *remote_errno) | |
9461 | { | |
9462 | struct remote_state *rs = get_remote_state (); | |
9463 | char *p = rs->buf; | |
9464 | char *attachment; | |
9465 | int left = get_remote_packet_size (); | |
9466 | int len, attachment_len; | |
9467 | int read_len; | |
9468 | char *ret; | |
9469 | ||
9470 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); | |
9471 | ||
9472 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9473 | strlen (filename)); | |
9474 | ||
9475 | len = remote_hostio_send_command (p - rs->buf, PACKET_vFile_readlink, | |
9476 | remote_errno, &attachment, | |
9477 | &attachment_len); | |
9478 | ||
9479 | if (len < 0) | |
9480 | return NULL; | |
9481 | ||
9482 | ret = xmalloc (len + 1); | |
9483 | ||
9484 | read_len = remote_unescape_input (attachment, attachment_len, | |
9485 | ret, len); | |
9486 | if (read_len != len) | |
9487 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
9488 | ||
9489 | ret[len] = '\0'; | |
9490 | return ret; | |
9491 | } | |
9492 | ||
a6b151f1 DJ |
9493 | static int |
9494 | remote_fileio_errno_to_host (int errnum) | |
9495 | { | |
9496 | switch (errnum) | |
9497 | { | |
9498 | case FILEIO_EPERM: | |
9499 | return EPERM; | |
9500 | case FILEIO_ENOENT: | |
9501 | return ENOENT; | |
9502 | case FILEIO_EINTR: | |
9503 | return EINTR; | |
9504 | case FILEIO_EIO: | |
9505 | return EIO; | |
9506 | case FILEIO_EBADF: | |
9507 | return EBADF; | |
9508 | case FILEIO_EACCES: | |
9509 | return EACCES; | |
9510 | case FILEIO_EFAULT: | |
9511 | return EFAULT; | |
9512 | case FILEIO_EBUSY: | |
9513 | return EBUSY; | |
9514 | case FILEIO_EEXIST: | |
9515 | return EEXIST; | |
9516 | case FILEIO_ENODEV: | |
9517 | return ENODEV; | |
9518 | case FILEIO_ENOTDIR: | |
9519 | return ENOTDIR; | |
9520 | case FILEIO_EISDIR: | |
9521 | return EISDIR; | |
9522 | case FILEIO_EINVAL: | |
9523 | return EINVAL; | |
9524 | case FILEIO_ENFILE: | |
9525 | return ENFILE; | |
9526 | case FILEIO_EMFILE: | |
9527 | return EMFILE; | |
9528 | case FILEIO_EFBIG: | |
9529 | return EFBIG; | |
9530 | case FILEIO_ENOSPC: | |
9531 | return ENOSPC; | |
9532 | case FILEIO_ESPIPE: | |
9533 | return ESPIPE; | |
9534 | case FILEIO_EROFS: | |
9535 | return EROFS; | |
9536 | case FILEIO_ENOSYS: | |
9537 | return ENOSYS; | |
9538 | case FILEIO_ENAMETOOLONG: | |
9539 | return ENAMETOOLONG; | |
9540 | } | |
9541 | return -1; | |
9542 | } | |
9543 | ||
9544 | static char * | |
9545 | remote_hostio_error (int errnum) | |
9546 | { | |
9547 | int host_error = remote_fileio_errno_to_host (errnum); | |
9548 | ||
9549 | if (host_error == -1) | |
9550 | error (_("Unknown remote I/O error %d"), errnum); | |
9551 | else | |
9552 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9553 | } | |
9554 | ||
a6b151f1 DJ |
9555 | static void |
9556 | remote_hostio_close_cleanup (void *opaque) | |
9557 | { | |
9558 | int fd = *(int *) opaque; | |
9559 | int remote_errno; | |
9560 | ||
9561 | remote_hostio_close (fd, &remote_errno); | |
9562 | } | |
9563 | ||
f1838a98 UW |
9564 | |
9565 | static void * | |
9566 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9567 | { | |
9568 | const char *filename = bfd_get_filename (abfd); | |
9569 | int fd, remote_errno; | |
9570 | int *stream; | |
9571 | ||
9572 | gdb_assert (remote_filename_p (filename)); | |
9573 | ||
9574 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9575 | if (fd == -1) | |
9576 | { | |
9577 | errno = remote_fileio_errno_to_host (remote_errno); | |
9578 | bfd_set_error (bfd_error_system_call); | |
9579 | return NULL; | |
9580 | } | |
9581 | ||
9582 | stream = xmalloc (sizeof (int)); | |
9583 | *stream = fd; | |
9584 | return stream; | |
9585 | } | |
9586 | ||
9587 | static int | |
9588 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9589 | { | |
9590 | int fd = *(int *)stream; | |
9591 | int remote_errno; | |
9592 | ||
9593 | xfree (stream); | |
9594 | ||
9595 | /* Ignore errors on close; these may happen if the remote | |
9596 | connection was already torn down. */ | |
9597 | remote_hostio_close (fd, &remote_errno); | |
9598 | ||
9599 | return 1; | |
9600 | } | |
9601 | ||
9602 | static file_ptr | |
9603 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9604 | file_ptr nbytes, file_ptr offset) | |
9605 | { | |
9606 | int fd = *(int *)stream; | |
9607 | int remote_errno; | |
9608 | file_ptr pos, bytes; | |
9609 | ||
9610 | pos = 0; | |
9611 | while (nbytes > pos) | |
9612 | { | |
9613 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9614 | offset + pos, &remote_errno); | |
9615 | if (bytes == 0) | |
9616 | /* Success, but no bytes, means end-of-file. */ | |
9617 | break; | |
9618 | if (bytes == -1) | |
9619 | { | |
9620 | errno = remote_fileio_errno_to_host (remote_errno); | |
9621 | bfd_set_error (bfd_error_system_call); | |
9622 | return -1; | |
9623 | } | |
9624 | ||
9625 | pos += bytes; | |
9626 | } | |
9627 | ||
9628 | return pos; | |
9629 | } | |
9630 | ||
9631 | static int | |
9632 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9633 | { | |
9634 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9635 | sb->st_size = INT_MAX; | |
9636 | return 0; | |
9637 | } | |
9638 | ||
9639 | int | |
9640 | remote_filename_p (const char *filename) | |
9641 | { | |
9642 | return strncmp (filename, "remote:", 7) == 0; | |
9643 | } | |
9644 | ||
9645 | bfd * | |
9646 | remote_bfd_open (const char *remote_file, const char *target) | |
9647 | { | |
9648 | return bfd_openr_iovec (remote_file, target, | |
9649 | remote_bfd_iovec_open, NULL, | |
9650 | remote_bfd_iovec_pread, | |
9651 | remote_bfd_iovec_close, | |
9652 | remote_bfd_iovec_stat); | |
9653 | } | |
9654 | ||
a6b151f1 DJ |
9655 | void |
9656 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9657 | { | |
9658 | struct cleanup *back_to, *close_cleanup; | |
9659 | int retcode, fd, remote_errno, bytes, io_size; | |
9660 | FILE *file; | |
9661 | gdb_byte *buffer; | |
9662 | int bytes_in_buffer; | |
9663 | int saw_eof; | |
9664 | ULONGEST offset; | |
9665 | ||
9666 | if (!remote_desc) | |
9667 | error (_("command can only be used with remote target")); | |
9668 | ||
9669 | file = fopen (local_file, "rb"); | |
9670 | if (file == NULL) | |
9671 | perror_with_name (local_file); | |
7c8a8b04 | 9672 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9673 | |
9674 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9675 | | FILEIO_O_TRUNC), | |
9676 | 0700, &remote_errno); | |
9677 | if (fd == -1) | |
9678 | remote_hostio_error (remote_errno); | |
9679 | ||
9680 | /* Send up to this many bytes at once. They won't all fit in the | |
9681 | remote packet limit, so we'll transfer slightly fewer. */ | |
9682 | io_size = get_remote_packet_size (); | |
9683 | buffer = xmalloc (io_size); | |
9684 | make_cleanup (xfree, buffer); | |
9685 | ||
9686 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9687 | ||
9688 | bytes_in_buffer = 0; | |
9689 | saw_eof = 0; | |
9690 | offset = 0; | |
9691 | while (bytes_in_buffer || !saw_eof) | |
9692 | { | |
9693 | if (!saw_eof) | |
9694 | { | |
3e43a32a MS |
9695 | bytes = fread (buffer + bytes_in_buffer, 1, |
9696 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9697 | file); |
9698 | if (bytes == 0) | |
9699 | { | |
9700 | if (ferror (file)) | |
9701 | error (_("Error reading %s."), local_file); | |
9702 | else | |
9703 | { | |
9704 | /* EOF. Unless there is something still in the | |
9705 | buffer from the last iteration, we are done. */ | |
9706 | saw_eof = 1; | |
9707 | if (bytes_in_buffer == 0) | |
9708 | break; | |
9709 | } | |
9710 | } | |
9711 | } | |
9712 | else | |
9713 | bytes = 0; | |
9714 | ||
9715 | bytes += bytes_in_buffer; | |
9716 | bytes_in_buffer = 0; | |
9717 | ||
3e43a32a MS |
9718 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9719 | offset, &remote_errno); | |
a6b151f1 DJ |
9720 | |
9721 | if (retcode < 0) | |
9722 | remote_hostio_error (remote_errno); | |
9723 | else if (retcode == 0) | |
9724 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9725 | else if (retcode < bytes) | |
9726 | { | |
9727 | /* Short write. Save the rest of the read data for the next | |
9728 | write. */ | |
9729 | bytes_in_buffer = bytes - retcode; | |
9730 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9731 | } | |
9732 | ||
9733 | offset += retcode; | |
9734 | } | |
9735 | ||
9736 | discard_cleanups (close_cleanup); | |
9737 | if (remote_hostio_close (fd, &remote_errno)) | |
9738 | remote_hostio_error (remote_errno); | |
9739 | ||
9740 | if (from_tty) | |
9741 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9742 | do_cleanups (back_to); | |
9743 | } | |
9744 | ||
9745 | void | |
9746 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9747 | { | |
9748 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9749 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9750 | FILE *file; |
9751 | gdb_byte *buffer; | |
9752 | ULONGEST offset; | |
9753 | ||
9754 | if (!remote_desc) | |
9755 | error (_("command can only be used with remote target")); | |
9756 | ||
9757 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9758 | if (fd == -1) | |
9759 | remote_hostio_error (remote_errno); | |
9760 | ||
9761 | file = fopen (local_file, "wb"); | |
9762 | if (file == NULL) | |
9763 | perror_with_name (local_file); | |
7c8a8b04 | 9764 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9765 | |
9766 | /* Send up to this many bytes at once. They won't all fit in the | |
9767 | remote packet limit, so we'll transfer slightly fewer. */ | |
9768 | io_size = get_remote_packet_size (); | |
9769 | buffer = xmalloc (io_size); | |
9770 | make_cleanup (xfree, buffer); | |
9771 | ||
9772 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9773 | ||
9774 | offset = 0; | |
9775 | while (1) | |
9776 | { | |
9777 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9778 | if (bytes == 0) | |
9779 | /* Success, but no bytes, means end-of-file. */ | |
9780 | break; | |
9781 | if (bytes == -1) | |
9782 | remote_hostio_error (remote_errno); | |
9783 | ||
9784 | offset += bytes; | |
9785 | ||
9786 | bytes = fwrite (buffer, 1, bytes, file); | |
9787 | if (bytes == 0) | |
9788 | perror_with_name (local_file); | |
9789 | } | |
9790 | ||
9791 | discard_cleanups (close_cleanup); | |
9792 | if (remote_hostio_close (fd, &remote_errno)) | |
9793 | remote_hostio_error (remote_errno); | |
9794 | ||
9795 | if (from_tty) | |
9796 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9797 | do_cleanups (back_to); | |
9798 | } | |
9799 | ||
9800 | void | |
9801 | remote_file_delete (const char *remote_file, int from_tty) | |
9802 | { | |
9803 | int retcode, remote_errno; | |
9804 | ||
9805 | if (!remote_desc) | |
9806 | error (_("command can only be used with remote target")); | |
9807 | ||
9808 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9809 | if (retcode == -1) | |
9810 | remote_hostio_error (remote_errno); | |
9811 | ||
9812 | if (from_tty) | |
9813 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9814 | } | |
9815 | ||
9816 | static void | |
9817 | remote_put_command (char *args, int from_tty) | |
9818 | { | |
9819 | struct cleanup *back_to; | |
9820 | char **argv; | |
9821 | ||
d1a41061 PP |
9822 | if (args == NULL) |
9823 | error_no_arg (_("file to put")); | |
9824 | ||
9825 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9826 | back_to = make_cleanup_freeargv (argv); |
9827 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9828 | error (_("Invalid parameters to remote put")); | |
9829 | ||
9830 | remote_file_put (argv[0], argv[1], from_tty); | |
9831 | ||
9832 | do_cleanups (back_to); | |
9833 | } | |
9834 | ||
9835 | static void | |
9836 | remote_get_command (char *args, int from_tty) | |
9837 | { | |
9838 | struct cleanup *back_to; | |
9839 | char **argv; | |
9840 | ||
d1a41061 PP |
9841 | if (args == NULL) |
9842 | error_no_arg (_("file to get")); | |
9843 | ||
9844 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9845 | back_to = make_cleanup_freeargv (argv); |
9846 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9847 | error (_("Invalid parameters to remote get")); | |
9848 | ||
9849 | remote_file_get (argv[0], argv[1], from_tty); | |
9850 | ||
9851 | do_cleanups (back_to); | |
9852 | } | |
9853 | ||
9854 | static void | |
9855 | remote_delete_command (char *args, int from_tty) | |
9856 | { | |
9857 | struct cleanup *back_to; | |
9858 | char **argv; | |
9859 | ||
d1a41061 PP |
9860 | if (args == NULL) |
9861 | error_no_arg (_("file to delete")); | |
9862 | ||
9863 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9864 | back_to = make_cleanup_freeargv (argv); |
9865 | if (argv[0] == NULL || argv[1] != NULL) | |
9866 | error (_("Invalid parameters to remote delete")); | |
9867 | ||
9868 | remote_file_delete (argv[0], from_tty); | |
9869 | ||
9870 | do_cleanups (back_to); | |
9871 | } | |
9872 | ||
9873 | static void | |
9874 | remote_command (char *args, int from_tty) | |
9875 | { | |
9876 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9877 | } | |
9878 | ||
b2175913 MS |
9879 | static int |
9880 | remote_can_execute_reverse (void) | |
9881 | { | |
40ab02ce MS |
9882 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9883 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9884 | return 1; | |
9885 | else | |
9886 | return 0; | |
b2175913 MS |
9887 | } |
9888 | ||
74531fed PA |
9889 | static int |
9890 | remote_supports_non_stop (void) | |
9891 | { | |
9892 | return 1; | |
9893 | } | |
9894 | ||
03583c20 UW |
9895 | static int |
9896 | remote_supports_disable_randomization (void) | |
9897 | { | |
9898 | /* Only supported in extended mode. */ | |
9899 | return 0; | |
9900 | } | |
9901 | ||
8a305172 PA |
9902 | static int |
9903 | remote_supports_multi_process (void) | |
9904 | { | |
9905 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9906 | |
901f9912 UW |
9907 | /* Only extended-remote handles being attached to multiple |
9908 | processes, even though plain remote can use the multi-process | |
9909 | thread id extensions, so that GDB knows the target process's | |
9910 | PID. */ | |
9911 | return rs->extended && remote_multi_process_p (rs); | |
8a305172 PA |
9912 | } |
9913 | ||
70221824 | 9914 | static int |
782b2b07 SS |
9915 | remote_supports_cond_tracepoints (void) |
9916 | { | |
9917 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9918 | |
782b2b07 SS |
9919 | return rs->cond_tracepoints; |
9920 | } | |
9921 | ||
3788aec7 LM |
9922 | static int |
9923 | remote_supports_cond_breakpoints (void) | |
9924 | { | |
9925 | struct remote_state *rs = get_remote_state (); | |
9926 | ||
9927 | return rs->cond_breakpoints; | |
9928 | } | |
9929 | ||
70221824 | 9930 | static int |
7a697b8d SS |
9931 | remote_supports_fast_tracepoints (void) |
9932 | { | |
9933 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9934 | |
7a697b8d SS |
9935 | return rs->fast_tracepoints; |
9936 | } | |
9937 | ||
0fb4aa4b PA |
9938 | static int |
9939 | remote_supports_static_tracepoints (void) | |
9940 | { | |
9941 | struct remote_state *rs = get_remote_state (); | |
9942 | ||
9943 | return rs->static_tracepoints; | |
9944 | } | |
9945 | ||
1e4d1764 YQ |
9946 | static int |
9947 | remote_supports_install_in_trace (void) | |
9948 | { | |
9949 | struct remote_state *rs = get_remote_state (); | |
9950 | ||
9951 | return rs->install_in_trace; | |
9952 | } | |
9953 | ||
d248b706 KY |
9954 | static int |
9955 | remote_supports_enable_disable_tracepoint (void) | |
9956 | { | |
9957 | struct remote_state *rs = get_remote_state (); | |
9958 | ||
9959 | return rs->enable_disable_tracepoints; | |
9960 | } | |
9961 | ||
3065dfb6 SS |
9962 | static int |
9963 | remote_supports_string_tracing (void) | |
9964 | { | |
9965 | struct remote_state *rs = get_remote_state (); | |
9966 | ||
9967 | return rs->string_tracing; | |
9968 | } | |
9969 | ||
35b1e5cc | 9970 | static void |
ad91cd99 | 9971 | remote_trace_init (void) |
35b1e5cc SS |
9972 | { |
9973 | putpkt ("QTinit"); | |
9974 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9975 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9976 | error (_("Target does not support this command.")); |
9977 | } | |
9978 | ||
9979 | static void free_actions_list (char **actions_list); | |
9980 | static void free_actions_list_cleanup_wrapper (void *); | |
9981 | static void | |
9982 | free_actions_list_cleanup_wrapper (void *al) | |
9983 | { | |
9984 | free_actions_list (al); | |
9985 | } | |
9986 | ||
9987 | static void | |
9988 | free_actions_list (char **actions_list) | |
9989 | { | |
9990 | int ndx; | |
9991 | ||
9992 | if (actions_list == 0) | |
9993 | return; | |
9994 | ||
9995 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9996 | xfree (actions_list[ndx]); | |
9997 | ||
9998 | xfree (actions_list); | |
9999 | } | |
10000 | ||
409873ef SS |
10001 | /* Recursive routine to walk through command list including loops, and |
10002 | download packets for each command. */ | |
10003 | ||
10004 | static void | |
10005 | remote_download_command_source (int num, ULONGEST addr, | |
10006 | struct command_line *cmds) | |
10007 | { | |
10008 | struct remote_state *rs = get_remote_state (); | |
10009 | struct command_line *cmd; | |
10010 | ||
10011 | for (cmd = cmds; cmd; cmd = cmd->next) | |
10012 | { | |
0df8b418 | 10013 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10014 | strcpy (rs->buf, "QTDPsrc:"); |
10015 | encode_source_string (num, addr, "cmd", cmd->line, | |
10016 | rs->buf + strlen (rs->buf), | |
10017 | rs->buf_size - strlen (rs->buf)); | |
10018 | putpkt (rs->buf); | |
10019 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10020 | if (strcmp (target_buf, "OK")) | |
10021 | warning (_("Target does not support source download.")); | |
10022 | ||
10023 | if (cmd->control_type == while_control | |
10024 | || cmd->control_type == while_stepping_control) | |
10025 | { | |
10026 | remote_download_command_source (num, addr, *cmd->body_list); | |
10027 | ||
0df8b418 | 10028 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
10029 | strcpy (rs->buf, "QTDPsrc:"); |
10030 | encode_source_string (num, addr, "cmd", "end", | |
10031 | rs->buf + strlen (rs->buf), | |
10032 | rs->buf_size - strlen (rs->buf)); | |
10033 | putpkt (rs->buf); | |
10034 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10035 | if (strcmp (target_buf, "OK")) | |
10036 | warning (_("Target does not support source download.")); | |
10037 | } | |
10038 | } | |
10039 | } | |
10040 | ||
35b1e5cc | 10041 | static void |
e8ba3115 | 10042 | remote_download_tracepoint (struct bp_location *loc) |
35b1e5cc | 10043 | { |
e8ba3115 | 10044 | |
35b1e5cc | 10045 | CORE_ADDR tpaddr; |
409873ef | 10046 | char addrbuf[40]; |
35b1e5cc SS |
10047 | char buf[2048]; |
10048 | char **tdp_actions; | |
10049 | char **stepping_actions; | |
10050 | int ndx; | |
10051 | struct cleanup *old_chain = NULL; | |
10052 | struct agent_expr *aexpr; | |
10053 | struct cleanup *aexpr_chain = NULL; | |
10054 | char *pkt; | |
e8ba3115 | 10055 | struct breakpoint *b = loc->owner; |
d9b3f62e | 10056 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 10057 | |
e8ba3115 YQ |
10058 | encode_actions (loc->owner, loc, &tdp_actions, &stepping_actions); |
10059 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
10060 | tdp_actions); | |
10061 | (void) make_cleanup (free_actions_list_cleanup_wrapper, | |
10062 | stepping_actions); | |
10063 | ||
10064 | tpaddr = loc->address; | |
10065 | sprintf_vma (addrbuf, tpaddr); | |
10066 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number, | |
10067 | addrbuf, /* address */ | |
10068 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
10069 | t->step_count, t->pass_count); | |
10070 | /* Fast tracepoints are mostly handled by the target, but we can | |
10071 | tell the target how big of an instruction block should be moved | |
10072 | around. */ | |
10073 | if (b->type == bp_fast_tracepoint) | |
10074 | { | |
10075 | /* Only test for support at download time; we may not know | |
10076 | target capabilities at definition time. */ | |
10077 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 10078 | { |
e8ba3115 | 10079 | int isize; |
35b1e5cc | 10080 | |
e8ba3115 YQ |
10081 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
10082 | tpaddr, &isize, NULL)) | |
10083 | sprintf (buf + strlen (buf), ":F%x", isize); | |
35b1e5cc | 10084 | else |
e8ba3115 YQ |
10085 | /* If it passed validation at definition but fails now, |
10086 | something is very wrong. */ | |
10087 | internal_error (__FILE__, __LINE__, | |
10088 | _("Fast tracepoint not " | |
10089 | "valid during download")); | |
35b1e5cc | 10090 | } |
e8ba3115 YQ |
10091 | else |
10092 | /* Fast tracepoints are functionally identical to regular | |
10093 | tracepoints, so don't take lack of support as a reason to | |
10094 | give up on the trace run. */ | |
10095 | warning (_("Target does not support fast tracepoints, " | |
10096 | "downloading %d as regular tracepoint"), b->number); | |
10097 | } | |
10098 | else if (b->type == bp_static_tracepoint) | |
10099 | { | |
10100 | /* Only test for support at download time; we may not know | |
10101 | target capabilities at definition time. */ | |
10102 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 10103 | { |
e8ba3115 | 10104 | struct static_tracepoint_marker marker; |
0fb4aa4b | 10105 | |
e8ba3115 YQ |
10106 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
10107 | strcat (buf, ":S"); | |
0fb4aa4b | 10108 | else |
e8ba3115 | 10109 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 10110 | } |
e8ba3115 YQ |
10111 | else |
10112 | /* Fast tracepoints are functionally identical to regular | |
10113 | tracepoints, so don't take lack of support as a reason | |
10114 | to give up on the trace run. */ | |
10115 | error (_("Target does not support static tracepoints")); | |
10116 | } | |
10117 | /* If the tracepoint has a conditional, make it into an agent | |
10118 | expression and append to the definition. */ | |
10119 | if (loc->cond) | |
10120 | { | |
10121 | /* Only test support at download time, we may not know target | |
10122 | capabilities at definition time. */ | |
10123 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 10124 | { |
e8ba3115 YQ |
10125 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); |
10126 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
10127 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
10128 | pkt = buf + strlen (buf); | |
10129 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
10130 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
10131 | *pkt = '\0'; | |
10132 | do_cleanups (aexpr_chain); | |
35b1e5cc | 10133 | } |
e8ba3115 YQ |
10134 | else |
10135 | warning (_("Target does not support conditional tracepoints, " | |
10136 | "ignoring tp %d cond"), b->number); | |
10137 | } | |
35b1e5cc | 10138 | |
d9b3f62e | 10139 | if (b->commands || *default_collect) |
e8ba3115 YQ |
10140 | strcat (buf, "-"); |
10141 | putpkt (buf); | |
10142 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10143 | if (strcmp (target_buf, "OK")) | |
10144 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 10145 | |
e8ba3115 YQ |
10146 | /* do_single_steps (t); */ |
10147 | if (tdp_actions) | |
10148 | { | |
10149 | for (ndx = 0; tdp_actions[ndx]; ndx++) | |
35b1e5cc | 10150 | { |
e8ba3115 YQ |
10151 | QUIT; /* Allow user to bail out with ^C. */ |
10152 | sprintf (buf, "QTDP:-%x:%s:%s%c", | |
10153 | b->number, addrbuf, /* address */ | |
10154 | tdp_actions[ndx], | |
10155 | ((tdp_actions[ndx + 1] || stepping_actions) | |
10156 | ? '-' : 0)); | |
10157 | putpkt (buf); | |
10158 | remote_get_noisy_reply (&target_buf, | |
10159 | &target_buf_size); | |
10160 | if (strcmp (target_buf, "OK")) | |
10161 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10162 | } |
e8ba3115 YQ |
10163 | } |
10164 | if (stepping_actions) | |
10165 | { | |
10166 | for (ndx = 0; stepping_actions[ndx]; ndx++) | |
35b1e5cc | 10167 | { |
e8ba3115 YQ |
10168 | QUIT; /* Allow user to bail out with ^C. */ |
10169 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", | |
10170 | b->number, addrbuf, /* address */ | |
10171 | ((ndx == 0) ? "S" : ""), | |
10172 | stepping_actions[ndx], | |
10173 | (stepping_actions[ndx + 1] ? "-" : "")); | |
10174 | putpkt (buf); | |
10175 | remote_get_noisy_reply (&target_buf, | |
10176 | &target_buf_size); | |
10177 | if (strcmp (target_buf, "OK")) | |
10178 | error (_("Error on target while setting tracepoints.")); | |
35b1e5cc | 10179 | } |
e8ba3115 | 10180 | } |
409873ef | 10181 | |
e8ba3115 YQ |
10182 | if (remote_protocol_packets[PACKET_TracepointSource].support |
10183 | == PACKET_ENABLE) | |
10184 | { | |
10185 | if (b->addr_string) | |
409873ef | 10186 | { |
e8ba3115 YQ |
10187 | strcpy (buf, "QTDPsrc:"); |
10188 | encode_source_string (b->number, loc->address, | |
10189 | "at", b->addr_string, buf + strlen (buf), | |
10190 | 2048 - strlen (buf)); | |
409873ef | 10191 | |
e8ba3115 YQ |
10192 | putpkt (buf); |
10193 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10194 | if (strcmp (target_buf, "OK")) | |
10195 | warning (_("Target does not support source download.")); | |
409873ef | 10196 | } |
e8ba3115 YQ |
10197 | if (b->cond_string) |
10198 | { | |
10199 | strcpy (buf, "QTDPsrc:"); | |
10200 | encode_source_string (b->number, loc->address, | |
10201 | "cond", b->cond_string, buf + strlen (buf), | |
10202 | 2048 - strlen (buf)); | |
10203 | putpkt (buf); | |
10204 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10205 | if (strcmp (target_buf, "OK")) | |
10206 | warning (_("Target does not support source download.")); | |
10207 | } | |
10208 | remote_download_command_source (b->number, loc->address, | |
10209 | breakpoint_commands (b)); | |
35b1e5cc | 10210 | } |
e8ba3115 YQ |
10211 | |
10212 | do_cleanups (old_chain); | |
35b1e5cc SS |
10213 | } |
10214 | ||
1e4d1764 YQ |
10215 | static int |
10216 | remote_can_download_tracepoint (void) | |
10217 | { | |
10218 | struct trace_status *ts = current_trace_status (); | |
10219 | int status = remote_get_trace_status (ts); | |
10220 | ||
10221 | if (status == -1 || !ts->running_known || !ts->running) | |
10222 | return 0; | |
10223 | ||
10224 | /* If we are in a tracing experiment, but remote stub doesn't support | |
10225 | installing tracepoint in trace, we have to return. */ | |
10226 | if (!remote_supports_install_in_trace ()) | |
10227 | return 0; | |
10228 | ||
10229 | return 1; | |
10230 | } | |
10231 | ||
10232 | ||
35b1e5cc SS |
10233 | static void |
10234 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
10235 | { | |
10236 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 10237 | char *p; |
35b1e5cc | 10238 | |
00bf0b85 SS |
10239 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
10240 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
10241 | p = rs->buf + strlen (rs->buf); | |
10242 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
10243 | error (_("Trace state variable name too long for tsv definition packet")); | |
10244 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
10245 | *p++ = '\0'; | |
35b1e5cc SS |
10246 | putpkt (rs->buf); |
10247 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10248 | if (*target_buf == '\0') |
10249 | error (_("Target does not support this command.")); | |
10250 | if (strcmp (target_buf, "OK") != 0) | |
10251 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
10252 | } |
10253 | ||
d248b706 KY |
10254 | static void |
10255 | remote_enable_tracepoint (struct bp_location *location) | |
10256 | { | |
10257 | struct remote_state *rs = get_remote_state (); | |
10258 | char addr_buf[40]; | |
10259 | ||
10260 | sprintf_vma (addr_buf, location->address); | |
10261 | sprintf (rs->buf, "QTEnable:%x:%s", location->owner->number, addr_buf); | |
10262 | putpkt (rs->buf); | |
10263 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10264 | if (*rs->buf == '\0') | |
10265 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
10266 | if (strcmp (rs->buf, "OK") != 0) | |
10267 | error (_("Error on target while enabling tracepoint.")); | |
10268 | } | |
10269 | ||
10270 | static void | |
10271 | remote_disable_tracepoint (struct bp_location *location) | |
10272 | { | |
10273 | struct remote_state *rs = get_remote_state (); | |
10274 | char addr_buf[40]; | |
10275 | ||
10276 | sprintf_vma (addr_buf, location->address); | |
10277 | sprintf (rs->buf, "QTDisable:%x:%s", location->owner->number, addr_buf); | |
10278 | putpkt (rs->buf); | |
10279 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
10280 | if (*rs->buf == '\0') | |
10281 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
10282 | if (strcmp (rs->buf, "OK") != 0) | |
10283 | error (_("Error on target while disabling tracepoint.")); | |
10284 | } | |
10285 | ||
35b1e5cc | 10286 | static void |
ad91cd99 | 10287 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10288 | { |
10289 | asection *s; | |
10290 | bfd_size_type size; | |
608bcef2 | 10291 | bfd_vma vma; |
35b1e5cc | 10292 | int anysecs = 0; |
c2fa21f1 | 10293 | int offset = 0; |
35b1e5cc SS |
10294 | |
10295 | if (!exec_bfd) | |
10296 | return; /* No information to give. */ | |
10297 | ||
10298 | strcpy (target_buf, "QTro"); | |
10299 | for (s = exec_bfd->sections; s; s = s->next) | |
10300 | { | |
10301 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10302 | int sec_length; |
35b1e5cc SS |
10303 | |
10304 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10305 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10306 | (s->flags & SEC_READONLY) == 0) |
10307 | continue; | |
10308 | ||
10309 | anysecs = 1; | |
608bcef2 | 10310 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 10311 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10312 | sprintf_vma (tmp1, vma); |
10313 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10314 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10315 | if (offset + sec_length + 1 > target_buf_size) | |
10316 | { | |
864ac8a7 HZ |
10317 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10318 | != PACKET_ENABLE) | |
10319 | warning (_("\ | |
c2fa21f1 HZ |
10320 | Too many sections for read-only sections definition packet.")); |
10321 | break; | |
10322 | } | |
10323 | sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2); | |
10324 | offset += sec_length; | |
35b1e5cc SS |
10325 | } |
10326 | if (anysecs) | |
10327 | { | |
10328 | putpkt (target_buf); | |
10329 | getpkt (&target_buf, &target_buf_size, 0); | |
10330 | } | |
10331 | } | |
10332 | ||
10333 | static void | |
ad91cd99 | 10334 | remote_trace_start (void) |
35b1e5cc SS |
10335 | { |
10336 | putpkt ("QTStart"); | |
10337 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10338 | if (*target_buf == '\0') |
10339 | error (_("Target does not support this command.")); | |
10340 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10341 | error (_("Bogus reply from target: %s"), target_buf); |
10342 | } | |
10343 | ||
10344 | static int | |
00bf0b85 | 10345 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10346 | { |
953b98d1 | 10347 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10348 | char *p = NULL; |
0df8b418 | 10349 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10350 | extern int trace_regblock_size; |
67f41397 | 10351 | volatile struct gdb_exception ex; |
a744cf53 | 10352 | |
00bf0b85 SS |
10353 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10354 | ||
35b1e5cc | 10355 | putpkt ("qTStatus"); |
67f41397 JK |
10356 | |
10357 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10358 | { | |
10359 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10360 | } | |
10361 | if (ex.reason < 0) | |
10362 | { | |
10363 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10364 | return -1; | |
10365 | } | |
00bf0b85 SS |
10366 | |
10367 | /* If the remote target doesn't do tracing, flag it. */ | |
10368 | if (*p == '\0') | |
10369 | return -1; | |
35b1e5cc | 10370 | |
00bf0b85 SS |
10371 | /* We're working with a live target. */ |
10372 | ts->from_file = 0; | |
10373 | ||
10374 | /* Set some defaults. */ | |
10375 | ts->running_known = 0; | |
10376 | ts->stop_reason = trace_stop_reason_unknown; | |
10377 | ts->traceframe_count = -1; | |
10378 | ts->buffer_free = 0; | |
10379 | ||
10380 | if (*p++ != 'T') | |
35b1e5cc SS |
10381 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10382 | ||
00bf0b85 SS |
10383 | parse_trace_status (p, ts); |
10384 | ||
10385 | return ts->running; | |
35b1e5cc SS |
10386 | } |
10387 | ||
70221824 | 10388 | static void |
f196051f SS |
10389 | remote_get_tracepoint_status (struct breakpoint *bp, |
10390 | struct uploaded_tp *utp) | |
10391 | { | |
10392 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
10393 | char *reply; |
10394 | struct bp_location *loc; | |
10395 | struct tracepoint *tp = (struct tracepoint *) bp; | |
10396 | ||
10397 | if (tp) | |
10398 | { | |
10399 | tp->base.hit_count = 0; | |
10400 | tp->traceframe_usage = 0; | |
10401 | for (loc = tp->base.loc; loc; loc = loc->next) | |
10402 | { | |
10403 | /* If the tracepoint was never downloaded, don't go asking for | |
10404 | any status. */ | |
10405 | if (tp->number_on_target == 0) | |
10406 | continue; | |
2bf50f6f JB |
10407 | sprintf (rs->buf, "qTP:%x:%s", tp->number_on_target, |
10408 | phex_nz (loc->address, 0)); | |
f196051f SS |
10409 | putpkt (rs->buf); |
10410 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10411 | if (reply && *reply) | |
10412 | { | |
10413 | if (*reply == 'V') | |
10414 | parse_tracepoint_status (reply + 1, bp, utp); | |
10415 | } | |
10416 | } | |
10417 | } | |
10418 | else if (utp) | |
10419 | { | |
10420 | utp->hit_count = 0; | |
10421 | utp->traceframe_usage = 0; | |
2bf50f6f | 10422 | sprintf (rs->buf, "qTP:%x:%s", utp->number, phex_nz (utp->addr, 0)); |
f196051f SS |
10423 | putpkt (rs->buf); |
10424 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10425 | if (reply && *reply) | |
10426 | { | |
10427 | if (*reply == 'V') | |
10428 | parse_tracepoint_status (reply + 1, bp, utp); | |
10429 | } | |
10430 | } | |
10431 | } | |
10432 | ||
35b1e5cc | 10433 | static void |
ad91cd99 | 10434 | remote_trace_stop (void) |
35b1e5cc SS |
10435 | { |
10436 | putpkt ("QTStop"); | |
10437 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10438 | if (*target_buf == '\0') |
10439 | error (_("Target does not support this command.")); | |
10440 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10441 | error (_("Bogus reply from target: %s"), target_buf); |
10442 | } | |
10443 | ||
10444 | static int | |
10445 | remote_trace_find (enum trace_find_type type, int num, | |
10446 | ULONGEST addr1, ULONGEST addr2, | |
10447 | int *tpp) | |
10448 | { | |
10449 | struct remote_state *rs = get_remote_state (); | |
10450 | char *p, *reply; | |
10451 | int target_frameno = -1, target_tracept = -1; | |
10452 | ||
e6e4e701 PA |
10453 | /* Lookups other than by absolute frame number depend on the current |
10454 | trace selected, so make sure it is correct on the remote end | |
10455 | first. */ | |
10456 | if (type != tfind_number) | |
10457 | set_remote_traceframe (); | |
10458 | ||
35b1e5cc SS |
10459 | p = rs->buf; |
10460 | strcpy (p, "QTFrame:"); | |
10461 | p = strchr (p, '\0'); | |
10462 | switch (type) | |
10463 | { | |
10464 | case tfind_number: | |
10465 | sprintf (p, "%x", num); | |
10466 | break; | |
10467 | case tfind_pc: | |
00bf0b85 | 10468 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10469 | break; |
10470 | case tfind_tp: | |
10471 | sprintf (p, "tdp:%x", num); | |
10472 | break; | |
10473 | case tfind_range: | |
00bf0b85 | 10474 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10475 | break; |
10476 | case tfind_outside: | |
00bf0b85 | 10477 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10478 | break; |
10479 | default: | |
9b20d036 | 10480 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10481 | } |
10482 | ||
10483 | putpkt (rs->buf); | |
10484 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10485 | if (*reply == '\0') |
10486 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10487 | |
10488 | while (reply && *reply) | |
10489 | switch (*reply) | |
10490 | { | |
10491 | case 'F': | |
f197e0f1 VP |
10492 | p = ++reply; |
10493 | target_frameno = (int) strtol (p, &reply, 16); | |
10494 | if (reply == p) | |
10495 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10496 | /* Don't update our remote traceframe number cache on failure |
10497 | to select a remote traceframe. */ | |
f197e0f1 VP |
10498 | if (target_frameno == -1) |
10499 | return -1; | |
35b1e5cc SS |
10500 | break; |
10501 | case 'T': | |
f197e0f1 VP |
10502 | p = ++reply; |
10503 | target_tracept = (int) strtol (p, &reply, 16); | |
10504 | if (reply == p) | |
10505 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10506 | break; |
10507 | case 'O': /* "OK"? */ | |
10508 | if (reply[1] == 'K' && reply[2] == '\0') | |
10509 | reply += 2; | |
10510 | else | |
10511 | error (_("Bogus reply from target: %s"), reply); | |
10512 | break; | |
10513 | default: | |
10514 | error (_("Bogus reply from target: %s"), reply); | |
10515 | } | |
10516 | if (tpp) | |
10517 | *tpp = target_tracept; | |
e6e4e701 PA |
10518 | |
10519 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10520 | return target_frameno; |
10521 | } | |
10522 | ||
10523 | static int | |
10524 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10525 | { | |
10526 | struct remote_state *rs = get_remote_state (); | |
10527 | char *reply; | |
10528 | ULONGEST uval; | |
10529 | ||
e6e4e701 PA |
10530 | set_remote_traceframe (); |
10531 | ||
35b1e5cc SS |
10532 | sprintf (rs->buf, "qTV:%x", tsvnum); |
10533 | putpkt (rs->buf); | |
10534 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10535 | if (reply && *reply) | |
10536 | { | |
10537 | if (*reply == 'V') | |
10538 | { | |
10539 | unpack_varlen_hex (reply + 1, &uval); | |
10540 | *val = (LONGEST) uval; | |
10541 | return 1; | |
10542 | } | |
10543 | } | |
10544 | return 0; | |
10545 | } | |
10546 | ||
00bf0b85 | 10547 | static int |
011aacb0 | 10548 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10549 | { |
10550 | struct remote_state *rs = get_remote_state (); | |
10551 | char *p, *reply; | |
10552 | ||
10553 | p = rs->buf; | |
10554 | strcpy (p, "QTSave:"); | |
10555 | p += strlen (p); | |
10556 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10557 | error (_("Remote file name too long for trace save packet")); | |
10558 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10559 | *p++ = '\0'; | |
10560 | putpkt (rs->buf); | |
ad91cd99 | 10561 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
d6c5869f | 10562 | if (*reply == '\0') |
ad91cd99 PA |
10563 | error (_("Target does not support this command.")); |
10564 | if (strcmp (reply, "OK") != 0) | |
10565 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10566 | return 0; |
10567 | } | |
10568 | ||
10569 | /* This is basically a memory transfer, but needs to be its own packet | |
10570 | because we don't know how the target actually organizes its trace | |
10571 | memory, plus we want to be able to ask for as much as possible, but | |
10572 | not be unhappy if we don't get as much as we ask for. */ | |
10573 | ||
10574 | static LONGEST | |
10575 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10576 | { | |
10577 | struct remote_state *rs = get_remote_state (); | |
10578 | char *reply; | |
10579 | char *p; | |
10580 | int rslt; | |
10581 | ||
10582 | p = rs->buf; | |
10583 | strcpy (p, "qTBuffer:"); | |
10584 | p += strlen (p); | |
10585 | p += hexnumstr (p, offset); | |
10586 | *p++ = ','; | |
10587 | p += hexnumstr (p, len); | |
10588 | *p++ = '\0'; | |
10589 | ||
10590 | putpkt (rs->buf); | |
10591 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10592 | if (reply && *reply) | |
10593 | { | |
10594 | /* 'l' by itself means we're at the end of the buffer and | |
10595 | there is nothing more to get. */ | |
10596 | if (*reply == 'l') | |
10597 | return 0; | |
10598 | ||
10599 | /* Convert the reply into binary. Limit the number of bytes to | |
10600 | convert according to our passed-in buffer size, rather than | |
10601 | what was returned in the packet; if the target is | |
10602 | unexpectedly generous and gives us a bigger reply than we | |
10603 | asked for, we don't want to crash. */ | |
10604 | rslt = hex2bin (target_buf, buf, len); | |
10605 | return rslt; | |
10606 | } | |
10607 | ||
10608 | /* Something went wrong, flag as an error. */ | |
10609 | return -1; | |
10610 | } | |
10611 | ||
35b1e5cc SS |
10612 | static void |
10613 | remote_set_disconnected_tracing (int val) | |
10614 | { | |
10615 | struct remote_state *rs = get_remote_state (); | |
10616 | ||
33da3f1c SS |
10617 | if (rs->disconnected_tracing) |
10618 | { | |
ad91cd99 PA |
10619 | char *reply; |
10620 | ||
33da3f1c SS |
10621 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10622 | putpkt (rs->buf); | |
ad91cd99 PA |
10623 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10624 | if (*reply == '\0') | |
33da3f1c | 10625 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10626 | if (strcmp (reply, "OK") != 0) |
10627 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10628 | } |
10629 | else if (val) | |
10630 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10631 | } |
10632 | ||
dc146f7c VP |
10633 | static int |
10634 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10635 | { | |
10636 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10637 | |
dc146f7c VP |
10638 | if (info && info->private) |
10639 | return info->private->core; | |
10640 | return -1; | |
10641 | } | |
10642 | ||
4daf5ac0 SS |
10643 | static void |
10644 | remote_set_circular_trace_buffer (int val) | |
10645 | { | |
10646 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10647 | char *reply; |
4daf5ac0 SS |
10648 | |
10649 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10650 | putpkt (rs->buf); | |
ad91cd99 PA |
10651 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10652 | if (*reply == '\0') | |
4daf5ac0 | 10653 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10654 | if (strcmp (reply, "OK") != 0) |
10655 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10656 | } |
10657 | ||
b3b9301e PA |
10658 | static struct traceframe_info * |
10659 | remote_traceframe_info (void) | |
10660 | { | |
10661 | char *text; | |
10662 | ||
10663 | text = target_read_stralloc (¤t_target, | |
10664 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10665 | if (text != NULL) | |
10666 | { | |
10667 | struct traceframe_info *info; | |
10668 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10669 | ||
10670 | info = parse_traceframe_info (text); | |
10671 | do_cleanups (back_to); | |
10672 | return info; | |
10673 | } | |
10674 | ||
10675 | return NULL; | |
10676 | } | |
10677 | ||
405f8e94 SS |
10678 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
10679 | instruction on which a fast tracepoint may be placed. Returns -1 | |
10680 | if the packet is not supported, and 0 if the minimum instruction | |
10681 | length is unknown. */ | |
10682 | ||
10683 | static int | |
10684 | remote_get_min_fast_tracepoint_insn_len (void) | |
10685 | { | |
10686 | struct remote_state *rs = get_remote_state (); | |
10687 | char *reply; | |
10688 | ||
e886a173 PA |
10689 | /* If we're not debugging a process yet, the IPA can't be |
10690 | loaded. */ | |
10691 | if (!target_has_execution) | |
10692 | return 0; | |
10693 | ||
10694 | /* Make sure the remote is pointing at the right process. */ | |
10695 | set_general_process (); | |
10696 | ||
405f8e94 SS |
10697 | sprintf (rs->buf, "qTMinFTPILen"); |
10698 | putpkt (rs->buf); | |
10699 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10700 | if (*reply == '\0') | |
10701 | return -1; | |
10702 | else | |
10703 | { | |
10704 | ULONGEST min_insn_len; | |
10705 | ||
10706 | unpack_varlen_hex (reply, &min_insn_len); | |
10707 | ||
10708 | return (int) min_insn_len; | |
10709 | } | |
10710 | } | |
10711 | ||
f196051f SS |
10712 | static int |
10713 | remote_set_trace_notes (char *user, char *notes, char *stop_notes) | |
10714 | { | |
10715 | struct remote_state *rs = get_remote_state (); | |
10716 | char *reply; | |
10717 | char *buf = rs->buf; | |
10718 | char *endbuf = rs->buf + get_remote_packet_size (); | |
10719 | int nbytes; | |
10720 | ||
10721 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
10722 | if (user) | |
10723 | { | |
10724 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
10725 | nbytes = bin2hex (user, buf, 0); | |
10726 | buf += 2 * nbytes; | |
10727 | *buf++ = ';'; | |
10728 | } | |
10729 | if (notes) | |
10730 | { | |
10731 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
10732 | nbytes = bin2hex (notes, buf, 0); | |
10733 | buf += 2 * nbytes; | |
10734 | *buf++ = ';'; | |
10735 | } | |
10736 | if (stop_notes) | |
10737 | { | |
10738 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
10739 | nbytes = bin2hex (stop_notes, buf, 0); | |
10740 | buf += 2 * nbytes; | |
10741 | *buf++ = ';'; | |
10742 | } | |
10743 | /* Ensure the buffer is terminated. */ | |
10744 | *buf = '\0'; | |
10745 | ||
10746 | putpkt (rs->buf); | |
10747 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10748 | if (*reply == '\0') | |
10749 | return 0; | |
10750 | ||
10751 | if (strcmp (reply, "OK") != 0) | |
10752 | error (_("Bogus reply from target: %s"), reply); | |
10753 | ||
10754 | return 1; | |
10755 | } | |
10756 | ||
d1feda86 YQ |
10757 | static int |
10758 | remote_use_agent (int use) | |
10759 | { | |
10760 | if (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE) | |
10761 | { | |
10762 | struct remote_state *rs = get_remote_state (); | |
10763 | ||
10764 | /* If the stub supports QAgent. */ | |
10765 | sprintf (rs->buf, "QAgent:%d", use); | |
10766 | putpkt (rs->buf); | |
10767 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10768 | ||
10769 | if (strcmp (rs->buf, "OK") == 0) | |
10770 | { | |
10771 | use_agent = use; | |
10772 | return 1; | |
10773 | } | |
10774 | } | |
10775 | ||
10776 | return 0; | |
10777 | } | |
10778 | ||
10779 | static int | |
10780 | remote_can_use_agent (void) | |
10781 | { | |
10782 | return (remote_protocol_packets[PACKET_QAgent].support != PACKET_DISABLE); | |
10783 | } | |
10784 | ||
c906108c | 10785 | static void |
fba45db2 | 10786 | init_remote_ops (void) |
c906108c | 10787 | { |
c5aa993b | 10788 | remote_ops.to_shortname = "remote"; |
c906108c | 10789 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10790 | remote_ops.to_doc = |
c906108c | 10791 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10792 | Specify the serial device it is connected to\n\ |
10793 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10794 | remote_ops.to_open = remote_open; |
10795 | remote_ops.to_close = remote_close; | |
c906108c | 10796 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10797 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10798 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10799 | remote_ops.to_wait = remote_wait; |
10800 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10801 | remote_ops.to_store_registers = remote_store_registers; | |
10802 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10803 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10804 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10805 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10806 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10807 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10808 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
283002cf MR |
10809 | remote_ops.to_watchpoint_addr_within_range = |
10810 | remote_watchpoint_addr_within_range; | |
3c3bea1c GS |
10811 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
10812 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10813 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10814 | remote_ops.to_region_ok_for_hw_watchpoint |
10815 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10816 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10817 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10818 | remote_ops.to_kill = remote_kill; |
10819 | remote_ops.to_load = generic_load; | |
c906108c | 10820 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10821 | remote_ops.to_pass_signals = remote_pass_signals; |
c906108c | 10822 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10823 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10824 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10825 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10826 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10827 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10828 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10829 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10830 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10831 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10832 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10833 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10834 | remote_ops.to_has_memory = default_child_has_memory; | |
10835 | remote_ops.to_has_stack = default_child_has_stack; | |
10836 | remote_ops.to_has_registers = default_child_has_registers; | |
10837 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10838 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10839 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10840 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10841 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10842 | remote_ops.to_flash_erase = remote_flash_erase; |
10843 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10844 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10845 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10846 | remote_ops.to_can_async_p = remote_can_async_p; |
10847 | remote_ops.to_is_async_p = remote_is_async_p; | |
10848 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10849 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10850 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10851 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10852 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
03583c20 UW |
10853 | remote_ops.to_supports_disable_randomization |
10854 | = remote_supports_disable_randomization; | |
7313baad UW |
10855 | remote_ops.to_fileio_open = remote_hostio_open; |
10856 | remote_ops.to_fileio_pwrite = remote_hostio_pwrite; | |
10857 | remote_ops.to_fileio_pread = remote_hostio_pread; | |
10858 | remote_ops.to_fileio_close = remote_hostio_close; | |
10859 | remote_ops.to_fileio_unlink = remote_hostio_unlink; | |
b9e7b9c3 | 10860 | remote_ops.to_fileio_readlink = remote_hostio_readlink; |
d248b706 | 10861 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
3065dfb6 | 10862 | remote_ops.to_supports_string_tracing = remote_supports_string_tracing; |
b775012e | 10863 | remote_ops.to_supports_evaluation_of_breakpoint_conditions = remote_supports_cond_breakpoints; |
35b1e5cc SS |
10864 | remote_ops.to_trace_init = remote_trace_init; |
10865 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
1e4d1764 | 10866 | remote_ops.to_can_download_tracepoint = remote_can_download_tracepoint; |
3e43a32a MS |
10867 | remote_ops.to_download_trace_state_variable |
10868 | = remote_download_trace_state_variable; | |
d248b706 KY |
10869 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
10870 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
10871 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10872 | remote_ops.to_trace_start = remote_trace_start; | |
10873 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
f196051f | 10874 | remote_ops.to_get_tracepoint_status = remote_get_tracepoint_status; |
35b1e5cc SS |
10875 | remote_ops.to_trace_stop = remote_trace_stop; |
10876 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10877 | remote_ops.to_get_trace_state_variable_value |
10878 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10879 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10880 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10881 | remote_ops.to_upload_trace_state_variables |
10882 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10883 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
405f8e94 | 10884 | remote_ops.to_get_min_fast_tracepoint_insn_len = remote_get_min_fast_tracepoint_insn_len; |
35b1e5cc | 10885 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10886 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
f196051f | 10887 | remote_ops.to_set_trace_notes = remote_set_trace_notes; |
dc146f7c | 10888 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10889 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10890 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10891 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10892 | remote_ops.to_static_tracepoint_marker_at |
10893 | = remote_static_tracepoint_marker_at; | |
10894 | remote_ops.to_static_tracepoint_markers_by_strid | |
10895 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 10896 | remote_ops.to_traceframe_info = remote_traceframe_info; |
d1feda86 YQ |
10897 | remote_ops.to_use_agent = remote_use_agent; |
10898 | remote_ops.to_can_use_agent = remote_can_use_agent; | |
c906108c SS |
10899 | } |
10900 | ||
10901 | /* Set up the extended remote vector by making a copy of the standard | |
10902 | remote vector and adding to it. */ | |
10903 | ||
10904 | static void | |
fba45db2 | 10905 | init_extended_remote_ops (void) |
c906108c SS |
10906 | { |
10907 | extended_remote_ops = remote_ops; | |
10908 | ||
0f71a2f6 | 10909 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10910 | extended_remote_ops.to_longname = |
c906108c | 10911 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10912 | extended_remote_ops.to_doc = |
c906108c | 10913 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10914 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10915 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10916 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10917 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10918 | extended_remote_ops.to_detach = extended_remote_detach; |
10919 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10920 | extended_remote_ops.to_kill = extended_remote_kill; |
03583c20 UW |
10921 | extended_remote_ops.to_supports_disable_randomization |
10922 | = extended_remote_supports_disable_randomization; | |
0f71a2f6 JM |
10923 | } |
10924 | ||
6426a772 JM |
10925 | static int |
10926 | remote_can_async_p (void) | |
10927 | { | |
c6ebd6cf | 10928 | if (!target_async_permitted) |
75c99385 PA |
10929 | /* We only enable async when the user specifically asks for it. */ |
10930 | return 0; | |
10931 | ||
23860348 | 10932 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10933 | return serial_can_async_p (remote_desc); |
6426a772 JM |
10934 | } |
10935 | ||
10936 | static int | |
10937 | remote_is_async_p (void) | |
10938 | { | |
c6ebd6cf | 10939 | if (!target_async_permitted) |
75c99385 PA |
10940 | /* We only enable async when the user specifically asks for it. */ |
10941 | return 0; | |
10942 | ||
23860348 | 10943 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10944 | return serial_is_async_p (remote_desc); |
6426a772 JM |
10945 | } |
10946 | ||
2acceee2 JM |
10947 | /* Pass the SERIAL event on and up to the client. One day this code |
10948 | will be able to delay notifying the client of an event until the | |
23860348 | 10949 | point where an entire packet has been received. */ |
2acceee2 | 10950 | |
2bc416ba | 10951 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10952 | void *context); |
2acceee2 JM |
10953 | static void *async_client_context; |
10954 | static serial_event_ftype remote_async_serial_handler; | |
10955 | ||
6426a772 | 10956 | static void |
819cc324 | 10957 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10958 | { |
2acceee2 JM |
10959 | /* Don't propogate error information up to the client. Instead let |
10960 | the client find out about the error by querying the target. */ | |
10961 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10962 | } | |
10963 | ||
74531fed PA |
10964 | static void |
10965 | remote_async_inferior_event_handler (gdb_client_data data) | |
10966 | { | |
10967 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10968 | } | |
10969 | ||
10970 | static void | |
10971 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10972 | { | |
10973 | remote_get_pending_stop_replies (); | |
10974 | } | |
10975 | ||
2acceee2 | 10976 | static void |
2bc416ba | 10977 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10978 | void *context), void *context) |
2acceee2 JM |
10979 | { |
10980 | if (callback != NULL) | |
10981 | { | |
2cd58942 | 10982 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10983 | async_client_callback = callback; |
10984 | async_client_context = context; | |
10985 | } | |
10986 | else | |
2cd58942 | 10987 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10988 | } |
10989 | ||
5a2468f5 | 10990 | static void |
c2d11a7d | 10991 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10992 | { |
427c3a89 | 10993 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10994 | } |
10995 | ||
d471ea57 AC |
10996 | static void |
10997 | show_remote_cmd (char *args, int from_tty) | |
10998 | { | |
37a105a1 | 10999 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 11000 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
11001 | struct cleanup *showlist_chain; |
11002 | struct cmd_list_element *list = remote_show_cmdlist; | |
79a45e25 | 11003 | struct ui_out *uiout = current_uiout; |
37a105a1 DJ |
11004 | |
11005 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
11006 | for (; list != NULL; list = list->next) | |
11007 | if (strcmp (list->name, "Z-packet") == 0) | |
11008 | continue; | |
427c3a89 DJ |
11009 | else if (list->type == not_set_cmd) |
11010 | /* Alias commands are exactly like the original, except they | |
11011 | don't have the normal type. */ | |
11012 | continue; | |
11013 | else | |
37a105a1 DJ |
11014 | { |
11015 | struct cleanup *option_chain | |
11016 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 11017 | |
37a105a1 DJ |
11018 | ui_out_field_string (uiout, "name", list->name); |
11019 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
11020 | if (list->type == show_cmd) |
11021 | do_setshow_command ((char *) NULL, from_tty, list); | |
11022 | else | |
11023 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
11024 | /* Close the tuple. */ |
11025 | do_cleanups (option_chain); | |
11026 | } | |
427c3a89 DJ |
11027 | |
11028 | /* Close the tuple. */ | |
11029 | do_cleanups (showlist_chain); | |
d471ea57 | 11030 | } |
5a2468f5 | 11031 | |
0f71a2f6 | 11032 | |
23860348 | 11033 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
11034 | static void |
11035 | remote_new_objfile (struct objfile *objfile) | |
11036 | { | |
23860348 | 11037 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 11038 | remote_check_symbols (objfile); |
dc8acb97 MS |
11039 | } |
11040 | ||
00bf0b85 SS |
11041 | /* Pull all the tracepoints defined on the target and create local |
11042 | data structures representing them. We don't want to create real | |
11043 | tracepoints yet, we don't want to mess up the user's existing | |
11044 | collection. */ | |
11045 | ||
11046 | static int | |
11047 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 11048 | { |
00bf0b85 SS |
11049 | struct remote_state *rs = get_remote_state (); |
11050 | char *p; | |
d5551862 | 11051 | |
00bf0b85 SS |
11052 | /* Ask for a first packet of tracepoint definition. */ |
11053 | putpkt ("qTfP"); | |
11054 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11055 | p = rs->buf; | |
11056 | while (*p && *p != 'l') | |
d5551862 | 11057 | { |
00bf0b85 SS |
11058 | parse_tracepoint_definition (p, utpp); |
11059 | /* Ask for another packet of tracepoint definition. */ | |
11060 | putpkt ("qTsP"); | |
11061 | getpkt (&rs->buf, &rs->buf_size, 0); | |
11062 | p = rs->buf; | |
d5551862 | 11063 | } |
00bf0b85 | 11064 | return 0; |
d5551862 SS |
11065 | } |
11066 | ||
00bf0b85 SS |
11067 | static int |
11068 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 11069 | { |
00bf0b85 | 11070 | struct remote_state *rs = get_remote_state (); |
d5551862 | 11071 | char *p; |
d5551862 | 11072 | |
00bf0b85 SS |
11073 | /* Ask for a first packet of variable definition. */ |
11074 | putpkt ("qTfV"); | |
d5551862 SS |
11075 | getpkt (&rs->buf, &rs->buf_size, 0); |
11076 | p = rs->buf; | |
00bf0b85 | 11077 | while (*p && *p != 'l') |
d5551862 | 11078 | { |
00bf0b85 SS |
11079 | parse_tsv_definition (p, utsvp); |
11080 | /* Ask for another packet of variable definition. */ | |
11081 | putpkt ("qTsV"); | |
d5551862 SS |
11082 | getpkt (&rs->buf, &rs->buf_size, 0); |
11083 | p = rs->buf; | |
11084 | } | |
00bf0b85 | 11085 | return 0; |
d5551862 SS |
11086 | } |
11087 | ||
c906108c | 11088 | void |
fba45db2 | 11089 | _initialize_remote (void) |
c906108c | 11090 | { |
ea9c271d | 11091 | struct remote_state *rs; |
9a7071a8 JB |
11092 | struct cmd_list_element *cmd; |
11093 | char *cmd_name; | |
ea9c271d | 11094 | |
0f71a2f6 | 11095 | /* architecture specific data */ |
2bc416ba | 11096 | remote_gdbarch_data_handle = |
23860348 | 11097 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
11098 | remote_g_packet_data_handle = |
11099 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 11100 | |
ea9c271d DJ |
11101 | /* Initialize the per-target state. At the moment there is only one |
11102 | of these, not one per target. Only one target is active at a | |
11103 | time. The default buffer size is unimportant; it will be expanded | |
11104 | whenever a larger buffer is needed. */ | |
0b83947e | 11105 | rs = get_remote_state_raw (); |
ea9c271d DJ |
11106 | rs->buf_size = 400; |
11107 | rs->buf = xmalloc (rs->buf_size); | |
11108 | ||
c906108c SS |
11109 | init_remote_ops (); |
11110 | add_target (&remote_ops); | |
11111 | ||
11112 | init_extended_remote_ops (); | |
11113 | add_target (&extended_remote_ops); | |
cce74817 | 11114 | |
dc8acb97 | 11115 | /* Hook into new objfile notification. */ |
06d3b283 | 11116 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 11117 | |
b803fb0f DJ |
11118 | /* Set up signal handlers. */ |
11119 | sigint_remote_token = | |
11120 | create_async_signal_handler (async_remote_interrupt, NULL); | |
11121 | sigint_remote_twice_token = | |
6d549500 | 11122 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 11123 | |
c906108c SS |
11124 | #if 0 |
11125 | init_remote_threadtests (); | |
11126 | #endif | |
11127 | ||
23860348 | 11128 | /* set/show remote ... */ |
d471ea57 | 11129 | |
1bedd215 | 11130 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
11131 | Remote protocol specific variables\n\ |
11132 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11133 | the packets being used"), |
cff3e48b | 11134 | &remote_set_cmdlist, "set remote ", |
23860348 | 11135 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 11136 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
11137 | Remote protocol specific variables\n\ |
11138 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 11139 | the packets being used"), |
cff3e48b | 11140 | &remote_show_cmdlist, "show remote ", |
23860348 | 11141 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 11142 | |
1a966eab AC |
11143 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
11144 | Compare section data on target to the exec file.\n\ | |
11145 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
11146 | &cmdlist); |
11147 | ||
1a966eab AC |
11148 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
11149 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
11150 | maintenance packet TEXT\n\ |
11151 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
11152 | this command sends the string TEXT to the inferior, and displays the\n\ | |
11153 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 11154 | terminating `#' character and checksum."), |
c906108c SS |
11155 | &maintenancelist); |
11156 | ||
7915a72c AC |
11157 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
11158 | Set whether to send break if interrupted."), _("\ | |
11159 | Show whether to send break if interrupted."), _("\ | |
11160 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 11161 | set_remotebreak, show_remotebreak, |
e707bbc2 | 11162 | &setlist, &showlist); |
9a7071a8 JB |
11163 | cmd_name = "remotebreak"; |
11164 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
11165 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
11166 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
11167 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
11168 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
11169 | ||
11170 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
11171 | interrupt_sequence_modes, &interrupt_sequence_mode, |
11172 | _("\ | |
9a7071a8 JB |
11173 | Set interrupt sequence to remote target."), _("\ |
11174 | Show interrupt sequence to remote target."), _("\ | |
11175 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
11176 | NULL, show_interrupt_sequence, | |
11177 | &remote_set_cmdlist, | |
11178 | &remote_show_cmdlist); | |
11179 | ||
11180 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
11181 | &interrupt_on_connect, _("\ | |
11182 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11183 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
11184 | If set, interrupt sequence is sent to remote target."), | |
11185 | NULL, NULL, | |
11186 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 11187 | |
23860348 | 11188 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 11189 | |
1a966eab AC |
11190 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
11191 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 11192 | &setlist); |
1a966eab AC |
11193 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
11194 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
11195 | &showlist); |
11196 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
11197 | set_memory_write_packet_size, _("\ |
11198 | Set the maximum number of bytes per memory-write packet.\n\ | |
11199 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11200 | default packet size. The actual limit is further reduced\n\ | |
11201 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11202 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11203 | &remote_set_cmdlist); |
11204 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
11205 | set_memory_read_packet_size, _("\ |
11206 | Set the maximum number of bytes per memory-read packet.\n\ | |
11207 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
11208 | default packet size. The actual limit is further reduced\n\ | |
11209 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
11210 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
11211 | &remote_set_cmdlist); |
11212 | add_cmd ("memory-write-packet-size", no_class, | |
11213 | show_memory_write_packet_size, | |
1a966eab | 11214 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
11215 | &remote_show_cmdlist); |
11216 | add_cmd ("memory-read-packet-size", no_class, | |
11217 | show_memory_read_packet_size, | |
1a966eab | 11218 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 11219 | &remote_show_cmdlist); |
c906108c | 11220 | |
b3f42336 | 11221 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
11222 | &remote_hw_watchpoint_limit, _("\ |
11223 | Set the maximum number of target hardware watchpoints."), _("\ | |
11224 | Show the maximum number of target hardware watchpoints."), _("\ | |
11225 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11226 | NULL, NULL, /* FIXME: i18n: The maximum |
11227 | number of target hardware | |
11228 | watchpoints is %s. */ | |
b3f42336 | 11229 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
11230 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
11231 | &remote_hw_watchpoint_length_limit, _("\ | |
11232 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11233 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
11234 | Specify a negative limit for unlimited."), | |
11235 | NULL, NULL, /* FIXME: i18n: The maximum | |
11236 | length (in bytes) of a target | |
11237 | hardware watchpoint is %s. */ | |
11238 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 11239 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
11240 | &remote_hw_breakpoint_limit, _("\ |
11241 | Set the maximum number of target hardware breakpoints."), _("\ | |
11242 | Show the maximum number of target hardware breakpoints."), _("\ | |
11243 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
11244 | NULL, NULL, /* FIXME: i18n: The maximum |
11245 | number of target hardware | |
11246 | breakpoints is %s. */ | |
b3f42336 | 11247 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 11248 | |
4d28ad1e AC |
11249 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
11250 | &remote_address_size, _("\ | |
11251 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
11252 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
11253 | NULL, | |
11254 | NULL, /* FIXME: i18n: */ | |
11255 | &setlist, &showlist); | |
c906108c | 11256 | |
444abaca | 11257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 11258 | "X", "binary-download", 1); |
0f71a2f6 | 11259 | |
444abaca | 11260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 11261 | "vCont", "verbose-resume", 0); |
506fb367 | 11262 | |
89be2091 DJ |
11263 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
11264 | "QPassSignals", "pass-signals", 0); | |
11265 | ||
444abaca | 11266 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 11267 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 11268 | |
444abaca | 11269 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 11270 | "P", "set-register", 1); |
d471ea57 | 11271 | |
444abaca | 11272 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 11273 | "p", "fetch-register", 1); |
b96ec7ac | 11274 | |
444abaca | 11275 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 11276 | "Z0", "software-breakpoint", 0); |
d471ea57 | 11277 | |
444abaca | 11278 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 11279 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 11280 | |
444abaca | 11281 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 11282 | "Z2", "write-watchpoint", 0); |
d471ea57 | 11283 | |
444abaca | 11284 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 11285 | "Z3", "read-watchpoint", 0); |
d471ea57 | 11286 | |
444abaca | 11287 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 11288 | "Z4", "access-watchpoint", 0); |
d471ea57 | 11289 | |
0876f84a DJ |
11290 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
11291 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 11292 | |
23181151 DJ |
11293 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
11294 | "qXfer:features:read", "target-features", 0); | |
11295 | ||
cfa9d6d9 DJ |
11296 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
11297 | "qXfer:libraries:read", "library-info", 0); | |
11298 | ||
2268b414 JK |
11299 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
11300 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
11301 | ||
fd79ecee DJ |
11302 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
11303 | "qXfer:memory-map:read", "memory-map", 0); | |
11304 | ||
0e7f50da UW |
11305 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
11306 | "qXfer:spu:read", "read-spu-object", 0); | |
11307 | ||
11308 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
11309 | "qXfer:spu:write", "write-spu-object", 0); | |
11310 | ||
07e059b5 VP |
11311 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
11312 | "qXfer:osdata:read", "osdata", 0); | |
11313 | ||
dc146f7c VP |
11314 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
11315 | "qXfer:threads:read", "threads", 0); | |
11316 | ||
4aa995e1 PA |
11317 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
11318 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
11319 | ||
11320 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
11321 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
11322 | ||
b3b9301e PA |
11323 | add_packet_config_cmd |
11324 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
11325 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
11326 | ||
169081d0 TG |
11327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
11328 | "qXfer:uib:read", "unwind-info-block", 0); | |
11329 | ||
444abaca | 11330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 11331 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
11332 | 0); |
11333 | ||
711e434b PM |
11334 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
11335 | "qGetTIBAddr", "get-thread-information-block-address", | |
11336 | 0); | |
11337 | ||
40ab02ce MS |
11338 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
11339 | "bc", "reverse-continue", 0); | |
11340 | ||
11341 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
11342 | "bs", "reverse-step", 0); | |
11343 | ||
be2a5f71 DJ |
11344 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
11345 | "qSupported", "supported-packets", 0); | |
11346 | ||
08388c79 DE |
11347 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
11348 | "qSearch:memory", "search-memory", 0); | |
11349 | ||
a6b151f1 DJ |
11350 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
11351 | "vFile:open", "hostio-open", 0); | |
11352 | ||
11353 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
11354 | "vFile:pread", "hostio-pread", 0); | |
11355 | ||
11356 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
11357 | "vFile:pwrite", "hostio-pwrite", 0); | |
11358 | ||
11359 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
11360 | "vFile:close", "hostio-close", 0); | |
11361 | ||
11362 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
11363 | "vFile:unlink", "hostio-unlink", 0); | |
11364 | ||
b9e7b9c3 UW |
11365 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
11366 | "vFile:readlink", "hostio-readlink", 0); | |
11367 | ||
2d717e4f DJ |
11368 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
11369 | "vAttach", "attach", 0); | |
11370 | ||
11371 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
11372 | "vRun", "run", 0); | |
11373 | ||
a6f3e723 SL |
11374 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
11375 | "QStartNoAckMode", "noack", 0); | |
11376 | ||
82f73884 PA |
11377 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
11378 | "vKill", "kill", 0); | |
11379 | ||
0b16c5cf PA |
11380 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
11381 | "qAttached", "query-attached", 0); | |
11382 | ||
782b2b07 | 11383 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
11384 | "ConditionalTracepoints", |
11385 | "conditional-tracepoints", 0); | |
3788aec7 LM |
11386 | |
11387 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
11388 | "ConditionalBreakpoints", | |
11389 | "conditional-breakpoints", 0); | |
11390 | ||
7a697b8d SS |
11391 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
11392 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 11393 | |
409873ef SS |
11394 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
11395 | "TracepointSource", "TracepointSource", 0); | |
11396 | ||
d914c394 SS |
11397 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
11398 | "QAllow", "allow", 0); | |
11399 | ||
0fb4aa4b PA |
11400 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
11401 | "StaticTracepoints", "static-tracepoints", 0); | |
11402 | ||
1e4d1764 YQ |
11403 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
11404 | "InstallInTrace", "install-in-trace", 0); | |
11405 | ||
0fb4aa4b PA |
11406 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
11407 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
11408 | ||
78d85199 YQ |
11409 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
11410 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
11411 | ||
03583c20 UW |
11412 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
11413 | "QDisableRandomization", "disable-randomization", 0); | |
11414 | ||
d1feda86 YQ |
11415 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
11416 | "QAgent", "agent", 0); | |
11417 | ||
37a105a1 DJ |
11418 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
11419 | Z sub-packet has its own set and show commands, but users may | |
11420 | have sets to this variable in their .gdbinit files (or in their | |
11421 | documentation). */ | |
e9e68a56 | 11422 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
11423 | &remote_Z_packet_detect, _("\ |
11424 | Set use of remote protocol `Z' packets"), _("\ | |
11425 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 11426 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 11427 | packets."), |
e9e68a56 | 11428 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
11429 | show_remote_protocol_Z_packet_cmd, |
11430 | /* FIXME: i18n: Use of remote protocol | |
11431 | `Z' packets is %s. */ | |
e9e68a56 | 11432 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 11433 | |
a6b151f1 DJ |
11434 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
11435 | Manipulate files on the remote system\n\ | |
11436 | Transfer files to and from the remote target system."), | |
11437 | &remote_cmdlist, "remote ", | |
11438 | 0 /* allow-unknown */, &cmdlist); | |
11439 | ||
11440 | add_cmd ("put", class_files, remote_put_command, | |
11441 | _("Copy a local file to the remote system."), | |
11442 | &remote_cmdlist); | |
11443 | ||
11444 | add_cmd ("get", class_files, remote_get_command, | |
11445 | _("Copy a remote file to the local system."), | |
11446 | &remote_cmdlist); | |
11447 | ||
11448 | add_cmd ("delete", class_files, remote_delete_command, | |
11449 | _("Delete a remote file."), | |
11450 | &remote_cmdlist); | |
11451 | ||
2d717e4f DJ |
11452 | remote_exec_file = xstrdup (""); |
11453 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
11454 | &remote_exec_file, _("\ | |
11455 | Set the remote pathname for \"run\""), _("\ | |
11456 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
11457 | &remote_set_cmdlist, &remote_show_cmdlist); | |
11458 | ||
449092f6 CV |
11459 | /* Eventually initialize fileio. See fileio.c */ |
11460 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
11461 | |
11462 | /* Take advantage of the fact that the LWP field is not used, to tag | |
11463 | special ptids with it set to != 0. */ | |
82f73884 PA |
11464 | magic_null_ptid = ptid_build (42000, 1, -1); |
11465 | not_sent_ptid = ptid_build (42000, 1, -2); | |
11466 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
11467 | |
11468 | target_buf_size = 2048; | |
11469 | target_buf = xmalloc (target_buf_size); | |
c906108c | 11470 | } |
10760264 | 11471 |