Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4c38e0a4 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
7b6bb8da | 5 | 2010, 2011 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 21 | |
23860348 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c | 32 | #include "target.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
6867ae3e | 42 | #include "observer.h" |
a77053c2 | 43 | #include "solib.h" |
37a105a1 DJ |
44 | #include "cli/cli-decode.h" |
45 | #include "cli/cli-setshow.h" | |
424163ea | 46 | #include "target-descriptions.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
3e88cf8d | 62 | #include "gdb_stat.h" |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
70 | ||
0df8b418 | 71 | /* Temp hacks for tracepoint encoding migration. */ |
35b1e5cc SS |
72 | static char *target_buf; |
73 | static long target_buf_size; | |
74 | /*static*/ void | |
9355b391 SS |
75 | encode_actions (struct breakpoint *t, struct bp_location *tloc, |
76 | char ***tdp_actions, char ***stepping_actions); | |
35b1e5cc | 77 | |
6765f3e5 DJ |
78 | /* The size to align memory write packets, when practical. The protocol |
79 | does not guarantee any alignment, and gdb will generate short | |
80 | writes and unaligned writes, but even as a best-effort attempt this | |
81 | can improve bulk transfers. For instance, if a write is misaligned | |
82 | relative to the target's data bus, the stub may need to make an extra | |
83 | round trip fetching data from the target. This doesn't make a | |
84 | huge difference, but it's easy to do, so we try to be helpful. | |
85 | ||
86 | The alignment chosen is arbitrary; usually data bus width is | |
87 | important here, not the possibly larger cache line size. */ | |
88 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
89 | ||
23860348 | 90 | /* Prototypes for local functions. */ |
6426a772 JM |
91 | static void cleanup_sigint_signal_handler (void *dummy); |
92 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 93 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
94 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
95 | int forever); | |
6426a772 | 96 | |
a14ed312 KB |
97 | static void handle_remote_sigint (int); |
98 | static void handle_remote_sigint_twice (int); | |
99 | static void async_remote_interrupt (gdb_client_data); | |
100 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 101 | |
a14ed312 | 102 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 103 | |
316f2060 | 104 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 105 | |
a14ed312 | 106 | static void remote_open (char *name, int from_tty); |
c906108c | 107 | |
a14ed312 | 108 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 109 | |
75c99385 | 110 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 111 | |
a14ed312 | 112 | static void remote_close (int quitting); |
c906108c | 113 | |
136d6dae | 114 | static void remote_mourn (struct target_ops *ops); |
c906108c | 115 | |
a14ed312 | 116 | static void extended_remote_restart (void); |
c906108c | 117 | |
136d6dae | 118 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 119 | |
a14ed312 | 120 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 121 | |
6d820c5c | 122 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 123 | |
a14ed312 | 124 | static int readchar (int timeout); |
c906108c | 125 | |
7d85a9c0 | 126 | static void remote_kill (struct target_ops *ops); |
c906108c | 127 | |
a14ed312 | 128 | static int tohex (int nib); |
c906108c | 129 | |
75c99385 PA |
130 | static int remote_can_async_p (void); |
131 | ||
132 | static int remote_is_async_p (void); | |
133 | ||
134 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
135 | void *context), void *context); | |
136 | ||
136d6dae | 137 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 138 | |
a14ed312 | 139 | static void remote_interrupt (int signo); |
c906108c | 140 | |
a14ed312 | 141 | static void remote_interrupt_twice (int signo); |
7a292a7a | 142 | |
a14ed312 | 143 | static void interrupt_query (void); |
c906108c | 144 | |
79d7f229 PA |
145 | static void set_general_thread (struct ptid ptid); |
146 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 147 | |
a14ed312 | 148 | static void get_offsets (void); |
c906108c | 149 | |
6d820c5c DJ |
150 | static void skip_frame (void); |
151 | ||
152 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumlen (ULONGEST num); |
c906108c | 155 | |
a14ed312 | 156 | static void init_remote_ops (void); |
c906108c | 157 | |
a14ed312 | 158 | static void init_extended_remote_ops (void); |
c906108c | 159 | |
94cc34af | 160 | static void remote_stop (ptid_t); |
c906108c | 161 | |
a14ed312 | 162 | static int ishex (int ch, int *val); |
c906108c | 163 | |
a14ed312 | 164 | static int stubhex (int ch); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumstr (char *, ULONGEST); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 169 | |
a14ed312 | 170 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 171 | |
a14ed312 | 172 | static void print_packet (char *); |
c906108c | 173 | |
a14ed312 | 174 | static void compare_sections_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static void packet_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 179 | |
39f77062 | 180 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 181 | |
a14ed312 | 182 | static void remote_find_new_threads (void); |
c906108c | 183 | |
79d7f229 | 184 | static void record_currthread (ptid_t currthread); |
c906108c | 185 | |
30559e10 | 186 | static int fromhex (int a); |
c906108c | 187 | |
00bf0b85 | 188 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 189 | |
00bf0b85 | 190 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 191 | |
a14ed312 | 192 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 193 | |
a14ed312 | 194 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 195 | |
5a2468f5 | 196 | struct packet_config; |
5a2468f5 | 197 | |
a14ed312 | 198 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 199 | |
d471ea57 | 200 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 201 | |
bb572ddd DJ |
202 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
203 | struct cmd_list_element *c); | |
204 | ||
205 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
206 | int from_tty, | |
207 | struct cmd_list_element *c, | |
208 | const char *value); | |
209 | ||
82f73884 PA |
210 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
211 | static ptid_t read_ptid (char *buf, char **obuf); | |
212 | ||
d914c394 SS |
213 | static void remote_set_permissions (void); |
214 | ||
d5551862 | 215 | struct remote_state; |
00bf0b85 | 216 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 217 | |
00bf0b85 SS |
218 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
219 | ||
220 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
221 | ||
c8d104ad PA |
222 | static void remote_query_supported (void); |
223 | ||
224 | static void remote_check_symbols (struct objfile *objfile); | |
225 | ||
a14ed312 | 226 | void _initialize_remote (void); |
c906108c | 227 | |
74531fed PA |
228 | struct stop_reply; |
229 | static struct stop_reply *stop_reply_xmalloc (void); | |
230 | static void stop_reply_xfree (struct stop_reply *); | |
231 | static void do_stop_reply_xfree (void *arg); | |
232 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
233 | static void push_stop_reply (struct stop_reply *); | |
234 | static void remote_get_pending_stop_replies (void); | |
235 | static void discard_pending_stop_replies (int pid); | |
236 | static int peek_stop_reply (ptid_t ptid); | |
237 | ||
238 | static void remote_async_inferior_event_handler (gdb_client_data); | |
239 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
240 | ||
d3fd5342 PA |
241 | static void remote_terminal_ours (void); |
242 | ||
d962ef82 DJ |
243 | static int remote_read_description_p (struct target_ops *target); |
244 | ||
176a6961 | 245 | static void remote_console_output (char *msg); |
dde08ee1 | 246 | |
74531fed PA |
247 | /* The non-stop remote protocol provisions for one pending stop reply. |
248 | This is where we keep it until it is acknowledged. */ | |
249 | ||
250 | static struct stop_reply *pending_stop_reply = NULL; | |
251 | ||
a6b151f1 DJ |
252 | /* For "remote". */ |
253 | ||
254 | static struct cmd_list_element *remote_cmdlist; | |
255 | ||
bb572ddd DJ |
256 | /* For "set remote" and "show remote". */ |
257 | ||
258 | static struct cmd_list_element *remote_set_cmdlist; | |
259 | static struct cmd_list_element *remote_show_cmdlist; | |
260 | ||
ea9c271d DJ |
261 | /* Description of the remote protocol state for the currently |
262 | connected target. This is per-target state, and independent of the | |
263 | selected architecture. */ | |
264 | ||
265 | struct remote_state | |
266 | { | |
267 | /* A buffer to use for incoming packets, and its current size. The | |
268 | buffer is grown dynamically for larger incoming packets. | |
269 | Outgoing packets may also be constructed in this buffer. | |
270 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
271 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
272 | packets. */ | |
273 | char *buf; | |
274 | long buf_size; | |
be2a5f71 DJ |
275 | |
276 | /* If we negotiated packet size explicitly (and thus can bypass | |
277 | heuristics for the largest packet size that will not overflow | |
278 | a buffer in the stub), this will be set to that packet size. | |
279 | Otherwise zero, meaning to use the guessed size. */ | |
280 | long explicit_packet_size; | |
2d717e4f DJ |
281 | |
282 | /* remote_wait is normally called when the target is running and | |
283 | waits for a stop reply packet. But sometimes we need to call it | |
284 | when the target is already stopped. We can send a "?" packet | |
285 | and have remote_wait read the response. Or, if we already have | |
286 | the response, we can stash it in BUF and tell remote_wait to | |
287 | skip calling getpkt. This flag is set when BUF contains a | |
288 | stop reply packet and the target is not waiting. */ | |
289 | int cached_wait_status; | |
a6f3e723 SL |
290 | |
291 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
292 | expect acks from each other. The connection is assumed to be | |
293 | reliable. */ | |
294 | int noack_mode; | |
82f73884 PA |
295 | |
296 | /* True if we're connected in extended remote mode. */ | |
297 | int extended; | |
298 | ||
299 | /* True if the stub reported support for multi-process | |
300 | extensions. */ | |
301 | int multi_process_aware; | |
e24a49d8 PA |
302 | |
303 | /* True if we resumed the target and we're waiting for the target to | |
304 | stop. In the mean time, we can't start another command/query. | |
305 | The remote server wouldn't be ready to process it, so we'd | |
306 | timeout waiting for a reply that would never come and eventually | |
307 | we'd close the connection. This can happen in asynchronous mode | |
308 | because we allow GDB commands while the target is running. */ | |
309 | int waiting_for_stop_reply; | |
74531fed PA |
310 | |
311 | /* True if the stub reports support for non-stop mode. */ | |
312 | int non_stop_aware; | |
313 | ||
314 | /* True if the stub reports support for vCont;t. */ | |
315 | int support_vCont_t; | |
782b2b07 SS |
316 | |
317 | /* True if the stub reports support for conditional tracepoints. */ | |
318 | int cond_tracepoints; | |
3a29589a | 319 | |
7a697b8d SS |
320 | /* True if the stub reports support for fast tracepoints. */ |
321 | int fast_tracepoints; | |
322 | ||
0fb4aa4b PA |
323 | /* True if the stub reports support for static tracepoints. */ |
324 | int static_tracepoints; | |
325 | ||
d5551862 SS |
326 | /* True if the stub can continue running a trace while GDB is |
327 | disconnected. */ | |
328 | int disconnected_tracing; | |
329 | ||
d248b706 KY |
330 | /* True if the stub reports support for enabling and disabling |
331 | tracepoints while a trace experiment is running. */ | |
332 | int enable_disable_tracepoints; | |
333 | ||
3a29589a DJ |
334 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
335 | responded to that. */ | |
336 | int ctrlc_pending_p; | |
ea9c271d DJ |
337 | }; |
338 | ||
dc146f7c VP |
339 | /* Private data that we'll store in (struct thread_info)->private. */ |
340 | struct private_thread_info | |
341 | { | |
342 | char *extra; | |
343 | int core; | |
344 | }; | |
345 | ||
346 | static void | |
347 | free_private_thread_info (struct private_thread_info *info) | |
348 | { | |
349 | xfree (info->extra); | |
350 | xfree (info); | |
351 | } | |
352 | ||
82f73884 PA |
353 | /* Returns true if the multi-process extensions are in effect. */ |
354 | static int | |
355 | remote_multi_process_p (struct remote_state *rs) | |
356 | { | |
357 | return rs->extended && rs->multi_process_aware; | |
358 | } | |
359 | ||
ea9c271d DJ |
360 | /* This data could be associated with a target, but we do not always |
361 | have access to the current target when we need it, so for now it is | |
362 | static. This will be fine for as long as only one target is in use | |
363 | at a time. */ | |
364 | static struct remote_state remote_state; | |
365 | ||
366 | static struct remote_state * | |
0b83947e | 367 | get_remote_state_raw (void) |
ea9c271d DJ |
368 | { |
369 | return &remote_state; | |
370 | } | |
371 | ||
372 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 373 | |
ad10f812 AC |
374 | struct packet_reg |
375 | { | |
376 | long offset; /* Offset into G packet. */ | |
377 | long regnum; /* GDB's internal register number. */ | |
378 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 379 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 380 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 381 | at present. */ |
1cf3db46 | 382 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 383 | at present. */ |
ad10f812 AC |
384 | }; |
385 | ||
ea9c271d | 386 | struct remote_arch_state |
d01949b6 | 387 | { |
ad10f812 AC |
388 | /* Description of the remote protocol registers. */ |
389 | long sizeof_g_packet; | |
b323314b AC |
390 | |
391 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 392 | (making an array gdbarch_num_regs in size). */ |
b323314b | 393 | struct packet_reg *regs; |
ad10f812 | 394 | |
d01949b6 AC |
395 | /* This is the size (in chars) of the first response to the ``g'' |
396 | packet. It is used as a heuristic when determining the maximum | |
397 | size of memory-read and memory-write packets. A target will | |
398 | typically only reserve a buffer large enough to hold the ``g'' | |
399 | packet. The size does not include packet overhead (headers and | |
23860348 | 400 | trailers). */ |
d01949b6 AC |
401 | long actual_register_packet_size; |
402 | ||
403 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 404 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
405 | long remote_packet_size; |
406 | }; | |
407 | ||
35b1e5cc SS |
408 | long sizeof_pkt = 2000; |
409 | ||
410 | /* Utility: generate error from an incoming stub packet. */ | |
411 | static void | |
412 | trace_error (char *buf) | |
413 | { | |
414 | if (*buf++ != 'E') | |
415 | return; /* not an error msg */ | |
416 | switch (*buf) | |
417 | { | |
418 | case '1': /* malformed packet error */ | |
419 | if (*++buf == '0') /* general case: */ | |
420 | error (_("remote.c: error in outgoing packet.")); | |
421 | else | |
422 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
423 | strtol (buf, NULL, 16)); | |
424 | case '2': | |
425 | error (_("trace API error 0x%s."), ++buf); | |
426 | default: | |
427 | error (_("Target returns error code '%s'."), buf); | |
428 | } | |
429 | } | |
430 | ||
431 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
432 | static char * | |
433 | remote_get_noisy_reply (char **buf_p, | |
434 | long *sizeof_buf) | |
435 | { | |
436 | do /* Loop on reply from remote stub. */ | |
437 | { | |
438 | char *buf; | |
a744cf53 | 439 | |
0df8b418 | 440 | QUIT; /* Allow user to bail out with ^C. */ |
35b1e5cc SS |
441 | getpkt (buf_p, sizeof_buf, 0); |
442 | buf = *buf_p; | |
ad91cd99 | 443 | if (buf[0] == 'E') |
35b1e5cc | 444 | trace_error (buf); |
dde08ee1 PA |
445 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
446 | { | |
447 | ULONGEST ul; | |
448 | CORE_ADDR from, to, org_to; | |
449 | char *p, *pp; | |
450 | int adjusted_size = 0; | |
451 | volatile struct gdb_exception ex; | |
452 | ||
453 | p = buf + strlen ("qRelocInsn:"); | |
454 | pp = unpack_varlen_hex (p, &ul); | |
455 | if (*pp != ';') | |
cb91c06a | 456 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
457 | from = ul; |
458 | ||
459 | p = pp + 1; | |
a9cbf802 | 460 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
461 | to = ul; |
462 | ||
463 | org_to = to; | |
464 | ||
465 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
466 | { | |
467 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
468 | } | |
469 | if (ex.reason >= 0) | |
470 | { | |
471 | adjusted_size = to - org_to; | |
472 | ||
473 | sprintf (buf, "qRelocInsn:%x", adjusted_size); | |
474 | putpkt (buf); | |
475 | } | |
476 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
477 | { | |
478 | /* Propagate memory errors silently back to the target. | |
479 | The stub may have limited the range of addresses we | |
480 | can write to, for example. */ | |
481 | putpkt ("E01"); | |
482 | } | |
483 | else | |
484 | { | |
485 | /* Something unexpectedly bad happened. Be verbose so | |
486 | we can tell what, and propagate the error back to the | |
487 | stub, so it doesn't get stuck waiting for a | |
488 | response. */ | |
489 | exception_fprintf (gdb_stderr, ex, | |
490 | _("warning: relocating instruction: ")); | |
491 | putpkt ("E01"); | |
492 | } | |
493 | } | |
ad91cd99 | 494 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
495 | remote_console_output (buf + 1); /* 'O' message from stub */ |
496 | else | |
0df8b418 | 497 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
498 | } |
499 | while (1); | |
500 | } | |
3c3bea1c | 501 | |
d01949b6 AC |
502 | /* Handle for retreving the remote protocol data from gdbarch. */ |
503 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
504 | ||
ea9c271d DJ |
505 | static struct remote_arch_state * |
506 | get_remote_arch_state (void) | |
d01949b6 | 507 | { |
1cf3db46 | 508 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
509 | } |
510 | ||
0b83947e DJ |
511 | /* Fetch the global remote target state. */ |
512 | ||
513 | static struct remote_state * | |
514 | get_remote_state (void) | |
515 | { | |
516 | /* Make sure that the remote architecture state has been | |
517 | initialized, because doing so might reallocate rs->buf. Any | |
518 | function which calls getpkt also needs to be mindful of changes | |
519 | to rs->buf, but this call limits the number of places which run | |
520 | into trouble. */ | |
521 | get_remote_arch_state (); | |
522 | ||
523 | return get_remote_state_raw (); | |
524 | } | |
525 | ||
74ca34ce DJ |
526 | static int |
527 | compare_pnums (const void *lhs_, const void *rhs_) | |
528 | { | |
529 | const struct packet_reg * const *lhs = lhs_; | |
530 | const struct packet_reg * const *rhs = rhs_; | |
531 | ||
532 | if ((*lhs)->pnum < (*rhs)->pnum) | |
533 | return -1; | |
534 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
535 | return 0; | |
536 | else | |
537 | return 1; | |
538 | } | |
539 | ||
c21236dc PA |
540 | static int |
541 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 542 | { |
74ca34ce | 543 | int regnum, num_remote_regs, offset; |
74ca34ce | 544 | struct packet_reg **remote_regs; |
ea9c271d | 545 | |
4a22f64d | 546 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 547 | { |
c21236dc | 548 | struct packet_reg *r = ®s[regnum]; |
baef701f | 549 | |
4a22f64d | 550 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
551 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
552 | r->pnum = -1; | |
553 | else | |
554 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
555 | ||
b323314b | 556 | r->regnum = regnum; |
74ca34ce DJ |
557 | } |
558 | ||
559 | /* Define the g/G packet format as the contents of each register | |
560 | with a remote protocol number, in order of ascending protocol | |
561 | number. */ | |
562 | ||
4a22f64d | 563 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
c21236dc | 564 | * sizeof (struct packet_reg *)); |
f57d151a | 565 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 566 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 567 | regnum++) |
c21236dc PA |
568 | if (regs[regnum].pnum != -1) |
569 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 570 | |
74ca34ce DJ |
571 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
572 | compare_pnums); | |
573 | ||
574 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
575 | { | |
576 | remote_regs[regnum]->in_g_packet = 1; | |
577 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 578 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
579 | } |
580 | ||
c21236dc PA |
581 | return offset; |
582 | } | |
583 | ||
584 | /* Given the architecture described by GDBARCH, return the remote | |
585 | protocol register's number and the register's offset in the g/G | |
586 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
587 | If the target does not have a mapping for REGNUM, return false, | |
588 | otherwise, return true. */ | |
589 | ||
590 | int | |
591 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
592 | int *pnum, int *poffset) | |
593 | { | |
594 | int sizeof_g_packet; | |
595 | struct packet_reg *regs; | |
596 | struct cleanup *old_chain; | |
597 | ||
598 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); | |
599 | ||
600 | regs = xcalloc (gdbarch_num_regs (gdbarch), sizeof (struct packet_reg)); | |
601 | old_chain = make_cleanup (xfree, regs); | |
602 | ||
603 | sizeof_g_packet = map_regcache_remote_table (gdbarch, regs); | |
604 | ||
605 | *pnum = regs[regnum].pnum; | |
606 | *poffset = regs[regnum].offset; | |
607 | ||
608 | do_cleanups (old_chain); | |
609 | ||
610 | return *pnum != -1; | |
611 | } | |
612 | ||
613 | static void * | |
614 | init_remote_state (struct gdbarch *gdbarch) | |
615 | { | |
616 | struct remote_state *rs = get_remote_state_raw (); | |
617 | struct remote_arch_state *rsa; | |
618 | ||
619 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
620 | ||
621 | /* Use the architecture to build a regnum<->pnum table, which will be | |
622 | 1:1 unless a feature set specifies otherwise. */ | |
623 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, | |
624 | gdbarch_num_regs (gdbarch), | |
625 | struct packet_reg); | |
626 | ||
74ca34ce DJ |
627 | /* Record the maximum possible size of the g packet - it may turn out |
628 | to be smaller. */ | |
c21236dc | 629 | rsa->sizeof_g_packet = map_regcache_remote_table (gdbarch, rsa->regs); |
74ca34ce | 630 | |
0df8b418 | 631 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
632 | remote stubs have a hardwired buffer size of 400 bytes |
633 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
634 | as the maximum packet-size to ensure that the packet and an extra | |
635 | NUL character can always fit in the buffer. This stops GDB | |
636 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
637 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
638 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 639 | |
ea9c271d DJ |
640 | /* This one is filled in when a ``g'' packet is received. */ |
641 | rsa->actual_register_packet_size = 0; | |
642 | ||
643 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
644 | default, adjust the size accordingly. Remember that each byte is |
645 | encoded as two characters. 32 is the overhead for the packet | |
646 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 647 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 648 | little. */ |
ea9c271d DJ |
649 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
650 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 651 | |
ea9c271d DJ |
652 | /* Make sure that the packet buffer is plenty big enough for |
653 | this architecture. */ | |
654 | if (rs->buf_size < rsa->remote_packet_size) | |
655 | { | |
656 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 657 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 658 | } |
6d820c5c | 659 | |
ea9c271d DJ |
660 | return rsa; |
661 | } | |
662 | ||
663 | /* Return the current allowed size of a remote packet. This is | |
664 | inferred from the current architecture, and should be used to | |
665 | limit the length of outgoing packets. */ | |
666 | static long | |
667 | get_remote_packet_size (void) | |
668 | { | |
be2a5f71 | 669 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
670 | struct remote_arch_state *rsa = get_remote_arch_state (); |
671 | ||
be2a5f71 DJ |
672 | if (rs->explicit_packet_size) |
673 | return rs->explicit_packet_size; | |
674 | ||
ea9c271d | 675 | return rsa->remote_packet_size; |
d01949b6 AC |
676 | } |
677 | ||
ad10f812 | 678 | static struct packet_reg * |
ea9c271d | 679 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 680 | { |
1cf3db46 | 681 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
682 | return NULL; |
683 | else | |
ad10f812 | 684 | { |
ea9c271d | 685 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 686 | |
b323314b AC |
687 | gdb_assert (r->regnum == regnum); |
688 | return r; | |
ad10f812 | 689 | } |
ad10f812 AC |
690 | } |
691 | ||
692 | static struct packet_reg * | |
ea9c271d | 693 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 694 | { |
b323314b | 695 | int i; |
a744cf53 | 696 | |
1cf3db46 | 697 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 698 | { |
ea9c271d | 699 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 700 | |
b323314b AC |
701 | if (r->pnum == pnum) |
702 | return r; | |
ad10f812 AC |
703 | } |
704 | return NULL; | |
d01949b6 AC |
705 | } |
706 | ||
3c3bea1c GS |
707 | /* FIXME: graces/2002-08-08: These variables should eventually be |
708 | bound to an instance of the target object (as in gdbarch-tdep()), | |
709 | when such a thing exists. */ | |
710 | ||
711 | /* This is set to the data address of the access causing the target | |
712 | to stop for a watchpoint. */ | |
713 | static CORE_ADDR remote_watch_data_address; | |
714 | ||
94e08568 | 715 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
716 | static int remote_stopped_by_watchpoint_p; |
717 | ||
c906108c SS |
718 | static struct target_ops remote_ops; |
719 | ||
720 | static struct target_ops extended_remote_ops; | |
721 | ||
6426a772 JM |
722 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
723 | ``forever'' still use the normal timeout mechanism. This is | |
724 | currently used by the ASYNC code to guarentee that target reads | |
725 | during the initial connect always time-out. Once getpkt has been | |
726 | modified to return a timeout indication and, in turn | |
727 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 728 | this can go away. */ |
6426a772 JM |
729 | static int wait_forever_enabled_p = 1; |
730 | ||
9a7071a8 JB |
731 | /* Allow the user to specify what sequence to send to the remote |
732 | when he requests a program interruption: Although ^C is usually | |
733 | what remote systems expect (this is the default, here), it is | |
734 | sometimes preferable to send a break. On other systems such | |
735 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
736 | is required in order to interrupt the execution. */ | |
737 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
738 | const char interrupt_sequence_break[] = "BREAK"; | |
739 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
740 | static const char *interrupt_sequence_modes[] = | |
741 | { | |
742 | interrupt_sequence_control_c, | |
743 | interrupt_sequence_break, | |
744 | interrupt_sequence_break_g, | |
745 | NULL | |
746 | }; | |
747 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
748 | ||
749 | static void | |
750 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
751 | struct cmd_list_element *c, | |
752 | const char *value) | |
753 | { | |
754 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
755 | fprintf_filtered (file, | |
756 | _("Send the ASCII ETX character (Ctrl-c) " | |
757 | "to the remote target to interrupt the " | |
758 | "execution of the program.\n")); | |
759 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
760 | fprintf_filtered (file, | |
761 | _("send a break signal to the remote target " | |
762 | "to interrupt the execution of the program.\n")); | |
763 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
764 | fprintf_filtered (file, | |
765 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
766 | "the remote target to interrupt the execution " | |
767 | "of Linux kernel.\n")); | |
768 | else | |
769 | internal_error (__FILE__, __LINE__, | |
770 | _("Invalid value for interrupt_sequence_mode: %s."), | |
771 | interrupt_sequence_mode); | |
772 | } | |
6426a772 | 773 | |
9a7071a8 JB |
774 | /* This boolean variable specifies whether interrupt_sequence is sent |
775 | to the remote target when gdb connects to it. | |
776 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
777 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
778 | static int interrupt_on_connect = 0; | |
c906108c | 779 | |
9a7071a8 JB |
780 | /* This variable is used to implement the "set/show remotebreak" commands. |
781 | Since these commands are now deprecated in favor of "set/show remote | |
782 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
783 | static int remote_break; |
784 | ||
9a7071a8 JB |
785 | static void |
786 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
787 | { | |
788 | if (remote_break) | |
789 | interrupt_sequence_mode = interrupt_sequence_break; | |
790 | else | |
791 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
792 | } | |
793 | ||
794 | static void | |
795 | show_remotebreak (struct ui_file *file, int from_tty, | |
796 | struct cmd_list_element *c, | |
797 | const char *value) | |
798 | { | |
799 | } | |
800 | ||
c906108c SS |
801 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
802 | remote_open knows that we don't have a file open when the program | |
803 | starts. */ | |
819cc324 | 804 | static struct serial *remote_desc = NULL; |
c906108c | 805 | |
c906108c SS |
806 | /* This variable sets the number of bits in an address that are to be |
807 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 808 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
809 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
810 | initial implementation of remote.c restricted the address sent in | |
811 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
812 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
813 | address was never sent. Since fixing this bug may cause a break in | |
814 | some remote targets this variable is principly provided to | |
23860348 | 815 | facilitate backward compatibility. */ |
c906108c SS |
816 | |
817 | static int remote_address_size; | |
818 | ||
75c99385 PA |
819 | /* Temporary to track who currently owns the terminal. See |
820 | remote_terminal_* for more details. */ | |
6426a772 JM |
821 | |
822 | static int remote_async_terminal_ours_p; | |
823 | ||
2d717e4f DJ |
824 | /* The executable file to use for "run" on the remote side. */ |
825 | ||
826 | static char *remote_exec_file = ""; | |
827 | ||
11cf8741 | 828 | \f |
11cf8741 | 829 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
830 | memory read/write packet. MIN (rsa->remote_packet_size, |
831 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 832 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
833 | (speed up transfers). The variables ``preferred_*'' (the user |
834 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 835 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
836 | |
837 | struct memory_packet_config | |
838 | { | |
839 | char *name; | |
840 | long size; | |
841 | int fixed_p; | |
842 | }; | |
843 | ||
844 | /* Compute the current size of a read/write packet. Since this makes | |
845 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
846 | ||
847 | static long | |
848 | get_memory_packet_size (struct memory_packet_config *config) | |
849 | { | |
d01949b6 | 850 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
851 | struct remote_arch_state *rsa = get_remote_arch_state (); |
852 | ||
11cf8741 JM |
853 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
854 | law?) that some hosts don't cope very well with large alloca() | |
855 | calls. Eventually the alloca() code will be replaced by calls to | |
856 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 857 | be lifted or removed. */ |
11cf8741 JM |
858 | #ifndef MAX_REMOTE_PACKET_SIZE |
859 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
860 | #endif | |
3de11b2e | 861 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 862 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 863 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
864 | #endif |
865 | long what_they_get; | |
866 | if (config->fixed_p) | |
867 | { | |
868 | if (config->size <= 0) | |
869 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
870 | else | |
871 | what_they_get = config->size; | |
872 | } | |
873 | else | |
874 | { | |
ea9c271d | 875 | what_they_get = get_remote_packet_size (); |
23860348 | 876 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
877 | if (config->size > 0 |
878 | && what_they_get > config->size) | |
879 | what_they_get = config->size; | |
be2a5f71 DJ |
880 | |
881 | /* Limit it to the size of the targets ``g'' response unless we have | |
882 | permission from the stub to use a larger packet size. */ | |
883 | if (rs->explicit_packet_size == 0 | |
884 | && rsa->actual_register_packet_size > 0 | |
885 | && what_they_get > rsa->actual_register_packet_size) | |
886 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
887 | } |
888 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
889 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
890 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
891 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
892 | |
893 | /* Make sure there is room in the global buffer for this packet | |
894 | (including its trailing NUL byte). */ | |
895 | if (rs->buf_size < what_they_get + 1) | |
896 | { | |
897 | rs->buf_size = 2 * what_they_get; | |
898 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
899 | } | |
900 | ||
11cf8741 JM |
901 | return what_they_get; |
902 | } | |
903 | ||
0df8b418 | 904 | /* Update the size of a read/write packet. If they user wants |
23860348 | 905 | something really big then do a sanity check. */ |
11cf8741 JM |
906 | |
907 | static void | |
908 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
909 | { | |
910 | int fixed_p = config->fixed_p; | |
911 | long size = config->size; | |
a744cf53 | 912 | |
11cf8741 | 913 | if (args == NULL) |
8a3fe4f8 | 914 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
915 | else if (strcmp (args, "hard") == 0 |
916 | || strcmp (args, "fixed") == 0) | |
917 | fixed_p = 1; | |
918 | else if (strcmp (args, "soft") == 0 | |
919 | || strcmp (args, "limit") == 0) | |
920 | fixed_p = 0; | |
921 | else | |
922 | { | |
923 | char *end; | |
a744cf53 | 924 | |
11cf8741 JM |
925 | size = strtoul (args, &end, 0); |
926 | if (args == end) | |
8a3fe4f8 | 927 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
928 | #if 0 |
929 | /* Instead of explicitly capping the size of a packet to | |
930 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
931 | instead allowed to set the size to something arbitrarily | |
23860348 | 932 | large. */ |
11cf8741 | 933 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 934 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
935 | #endif |
936 | } | |
23860348 | 937 | /* Extra checks? */ |
11cf8741 JM |
938 | if (fixed_p && !config->fixed_p) |
939 | { | |
e2e0b3e5 AC |
940 | if (! query (_("The target may not be able to correctly handle a %s\n" |
941 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 942 | config->name, size)) |
8a3fe4f8 | 943 | error (_("Packet size not changed.")); |
11cf8741 | 944 | } |
23860348 | 945 | /* Update the config. */ |
11cf8741 JM |
946 | config->fixed_p = fixed_p; |
947 | config->size = size; | |
948 | } | |
949 | ||
950 | static void | |
951 | show_memory_packet_size (struct memory_packet_config *config) | |
952 | { | |
a3f17187 | 953 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 954 | if (config->fixed_p) |
a3f17187 | 955 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
956 | get_memory_packet_size (config)); |
957 | else | |
a3f17187 | 958 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
959 | get_memory_packet_size (config)); |
960 | } | |
961 | ||
962 | static struct memory_packet_config memory_write_packet_config = | |
963 | { | |
964 | "memory-write-packet-size", | |
965 | }; | |
966 | ||
967 | static void | |
968 | set_memory_write_packet_size (char *args, int from_tty) | |
969 | { | |
970 | set_memory_packet_size (args, &memory_write_packet_config); | |
971 | } | |
972 | ||
973 | static void | |
974 | show_memory_write_packet_size (char *args, int from_tty) | |
975 | { | |
976 | show_memory_packet_size (&memory_write_packet_config); | |
977 | } | |
978 | ||
979 | static long | |
980 | get_memory_write_packet_size (void) | |
981 | { | |
982 | return get_memory_packet_size (&memory_write_packet_config); | |
983 | } | |
984 | ||
985 | static struct memory_packet_config memory_read_packet_config = | |
986 | { | |
987 | "memory-read-packet-size", | |
988 | }; | |
989 | ||
990 | static void | |
991 | set_memory_read_packet_size (char *args, int from_tty) | |
992 | { | |
993 | set_memory_packet_size (args, &memory_read_packet_config); | |
994 | } | |
995 | ||
996 | static void | |
997 | show_memory_read_packet_size (char *args, int from_tty) | |
998 | { | |
999 | show_memory_packet_size (&memory_read_packet_config); | |
1000 | } | |
1001 | ||
1002 | static long | |
1003 | get_memory_read_packet_size (void) | |
1004 | { | |
1005 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1006 | |
11cf8741 JM |
1007 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1008 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1009 | increased beyond this. */ |
1010 | if (size > get_remote_packet_size ()) | |
1011 | size = get_remote_packet_size (); | |
11cf8741 JM |
1012 | return size; |
1013 | } | |
1014 | ||
11cf8741 | 1015 | \f |
5a2468f5 | 1016 | /* Generic configuration support for packets the stub optionally |
0df8b418 | 1017 | supports. Allows the user to specify the use of the packet as well |
23860348 | 1018 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
1019 | |
1020 | enum packet_support | |
1021 | { | |
1022 | PACKET_SUPPORT_UNKNOWN = 0, | |
1023 | PACKET_ENABLE, | |
1024 | PACKET_DISABLE | |
1025 | }; | |
1026 | ||
5a2468f5 JM |
1027 | struct packet_config |
1028 | { | |
bb572ddd DJ |
1029 | const char *name; |
1030 | const char *title; | |
7f19b9a2 | 1031 | enum auto_boolean detect; |
5a2468f5 JM |
1032 | enum packet_support support; |
1033 | }; | |
1034 | ||
d471ea57 | 1035 | /* Analyze a packet's return value and update the packet config |
23860348 | 1036 | accordingly. */ |
d471ea57 AC |
1037 | |
1038 | enum packet_result | |
1039 | { | |
1040 | PACKET_ERROR, | |
1041 | PACKET_OK, | |
1042 | PACKET_UNKNOWN | |
1043 | }; | |
1044 | ||
5a2468f5 | 1045 | static void |
d471ea57 | 1046 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1047 | { |
d471ea57 AC |
1048 | switch (config->detect) |
1049 | { | |
7f19b9a2 | 1050 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1051 | config->support = PACKET_ENABLE; |
1052 | break; | |
7f19b9a2 | 1053 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1054 | config->support = PACKET_DISABLE; |
1055 | break; | |
7f19b9a2 | 1056 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1057 | config->support = PACKET_SUPPORT_UNKNOWN; |
1058 | break; | |
1059 | } | |
5a2468f5 JM |
1060 | } |
1061 | ||
1062 | static void | |
fba45db2 | 1063 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1064 | { |
1065 | char *support = "internal-error"; | |
a744cf53 | 1066 | |
5a2468f5 JM |
1067 | switch (config->support) |
1068 | { | |
1069 | case PACKET_ENABLE: | |
1070 | support = "enabled"; | |
1071 | break; | |
1072 | case PACKET_DISABLE: | |
1073 | support = "disabled"; | |
1074 | break; | |
1075 | case PACKET_SUPPORT_UNKNOWN: | |
1076 | support = "unknown"; | |
1077 | break; | |
1078 | } | |
1079 | switch (config->detect) | |
1080 | { | |
7f19b9a2 | 1081 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1082 | printf_filtered (_("Support for the `%s' packet " |
1083 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1084 | config->name, support); |
5a2468f5 | 1085 | break; |
7f19b9a2 AC |
1086 | case AUTO_BOOLEAN_TRUE: |
1087 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1088 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1089 | config->name, support); | |
8e248173 | 1090 | break; |
5a2468f5 JM |
1091 | } |
1092 | } | |
1093 | ||
1094 | static void | |
bb572ddd DJ |
1095 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1096 | const char *title, int legacy) | |
d471ea57 | 1097 | { |
5a2468f5 JM |
1098 | char *set_doc; |
1099 | char *show_doc; | |
d471ea57 | 1100 | char *cmd_name; |
3ed07be4 | 1101 | |
5a2468f5 JM |
1102 | config->name = name; |
1103 | config->title = title; | |
7f19b9a2 | 1104 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1105 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1106 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1107 | name, title); | |
3e43a32a MS |
1108 | show_doc = xstrprintf ("Show current use of remote " |
1109 | "protocol `%s' (%s) packet", | |
b435e160 | 1110 | name, title); |
d471ea57 | 1111 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1112 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1113 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1114 | &config->detect, set_doc, |
1115 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1116 | set_remote_protocol_packet_cmd, |
1117 | show_remote_protocol_packet_cmd, | |
1118 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1119 | /* The command code copies the documentation strings. */ |
1120 | xfree (set_doc); | |
1121 | xfree (show_doc); | |
23860348 | 1122 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1123 | if (legacy) |
1124 | { | |
1125 | char *legacy_name; | |
a744cf53 | 1126 | |
b435e160 | 1127 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1128 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1129 | &remote_set_cmdlist); |
d471ea57 | 1130 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1131 | &remote_show_cmdlist); |
d471ea57 | 1132 | } |
5a2468f5 JM |
1133 | } |
1134 | ||
d471ea57 | 1135 | static enum packet_result |
a76d924d | 1136 | packet_check_result (const char *buf) |
5a2468f5 | 1137 | { |
d471ea57 | 1138 | if (buf[0] != '\0') |
5a2468f5 | 1139 | { |
d471ea57 | 1140 | /* The stub recognized the packet request. Check that the |
23860348 | 1141 | operation succeeded. */ |
a76d924d DJ |
1142 | if (buf[0] == 'E' |
1143 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1144 | && buf[3] == '\0') | |
1145 | /* "Enn" - definitly an error. */ | |
1146 | return PACKET_ERROR; | |
1147 | ||
1148 | /* Always treat "E." as an error. This will be used for | |
1149 | more verbose error messages, such as E.memtypes. */ | |
1150 | if (buf[0] == 'E' && buf[1] == '.') | |
1151 | return PACKET_ERROR; | |
1152 | ||
1153 | /* The packet may or may not be OK. Just assume it is. */ | |
1154 | return PACKET_OK; | |
1155 | } | |
1156 | else | |
1157 | /* The stub does not support the packet. */ | |
1158 | return PACKET_UNKNOWN; | |
1159 | } | |
1160 | ||
1161 | static enum packet_result | |
1162 | packet_ok (const char *buf, struct packet_config *config) | |
1163 | { | |
1164 | enum packet_result result; | |
1165 | ||
1166 | result = packet_check_result (buf); | |
1167 | switch (result) | |
1168 | { | |
1169 | case PACKET_OK: | |
1170 | case PACKET_ERROR: | |
1171 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1172 | switch (config->support) |
1173 | { | |
1174 | case PACKET_SUPPORT_UNKNOWN: | |
1175 | if (remote_debug) | |
1176 | fprintf_unfiltered (gdb_stdlog, | |
1177 | "Packet %s (%s) is supported\n", | |
1178 | config->name, config->title); | |
1179 | config->support = PACKET_ENABLE; | |
1180 | break; | |
1181 | case PACKET_DISABLE: | |
8e65ff28 | 1182 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1183 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1184 | break; |
1185 | case PACKET_ENABLE: | |
1186 | break; | |
1187 | } | |
a76d924d DJ |
1188 | break; |
1189 | case PACKET_UNKNOWN: | |
23860348 | 1190 | /* The stub does not support the packet. */ |
d471ea57 AC |
1191 | switch (config->support) |
1192 | { | |
1193 | case PACKET_ENABLE: | |
7f19b9a2 | 1194 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1195 | /* If the stub previously indicated that the packet was |
23860348 | 1196 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1197 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1198 | config->name, config->title); |
1199 | else | |
23860348 | 1200 | /* The user set it wrong. */ |
8a3fe4f8 | 1201 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1202 | config->name, config->title); |
1203 | break; | |
1204 | case PACKET_SUPPORT_UNKNOWN: | |
1205 | if (remote_debug) | |
1206 | fprintf_unfiltered (gdb_stdlog, | |
1207 | "Packet %s (%s) is NOT supported\n", | |
1208 | config->name, config->title); | |
1209 | config->support = PACKET_DISABLE; | |
1210 | break; | |
1211 | case PACKET_DISABLE: | |
1212 | break; | |
1213 | } | |
a76d924d | 1214 | break; |
5a2468f5 | 1215 | } |
a76d924d DJ |
1216 | |
1217 | return result; | |
5a2468f5 JM |
1218 | } |
1219 | ||
444abaca DJ |
1220 | enum { |
1221 | PACKET_vCont = 0, | |
1222 | PACKET_X, | |
1223 | PACKET_qSymbol, | |
1224 | PACKET_P, | |
1225 | PACKET_p, | |
1226 | PACKET_Z0, | |
1227 | PACKET_Z1, | |
1228 | PACKET_Z2, | |
1229 | PACKET_Z3, | |
1230 | PACKET_Z4, | |
a6b151f1 DJ |
1231 | PACKET_vFile_open, |
1232 | PACKET_vFile_pread, | |
1233 | PACKET_vFile_pwrite, | |
1234 | PACKET_vFile_close, | |
1235 | PACKET_vFile_unlink, | |
0876f84a | 1236 | PACKET_qXfer_auxv, |
23181151 | 1237 | PACKET_qXfer_features, |
cfa9d6d9 | 1238 | PACKET_qXfer_libraries, |
fd79ecee | 1239 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1240 | PACKET_qXfer_spu_read, |
1241 | PACKET_qXfer_spu_write, | |
07e059b5 | 1242 | PACKET_qXfer_osdata, |
dc146f7c | 1243 | PACKET_qXfer_threads, |
0fb4aa4b | 1244 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1245 | PACKET_qXfer_traceframe_info, |
711e434b | 1246 | PACKET_qGetTIBAddr, |
444abaca | 1247 | PACKET_qGetTLSAddr, |
be2a5f71 | 1248 | PACKET_qSupported, |
89be2091 | 1249 | PACKET_QPassSignals, |
08388c79 | 1250 | PACKET_qSearch_memory, |
2d717e4f DJ |
1251 | PACKET_vAttach, |
1252 | PACKET_vRun, | |
a6f3e723 | 1253 | PACKET_QStartNoAckMode, |
82f73884 | 1254 | PACKET_vKill, |
4aa995e1 PA |
1255 | PACKET_qXfer_siginfo_read, |
1256 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1257 | PACKET_qAttached, |
782b2b07 | 1258 | PACKET_ConditionalTracepoints, |
7a697b8d | 1259 | PACKET_FastTracepoints, |
0fb4aa4b | 1260 | PACKET_StaticTracepoints, |
40ab02ce MS |
1261 | PACKET_bc, |
1262 | PACKET_bs, | |
409873ef | 1263 | PACKET_TracepointSource, |
d914c394 | 1264 | PACKET_QAllow, |
444abaca DJ |
1265 | PACKET_MAX |
1266 | }; | |
506fb367 | 1267 | |
444abaca | 1268 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1269 | |
1270 | static void | |
444abaca DJ |
1271 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1272 | struct cmd_list_element *c) | |
dc8acb97 | 1273 | { |
444abaca | 1274 | struct packet_config *packet; |
dc8acb97 | 1275 | |
444abaca DJ |
1276 | for (packet = remote_protocol_packets; |
1277 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1278 | packet++) | |
1279 | { | |
1280 | if (&packet->detect == c->var) | |
1281 | { | |
1282 | update_packet_config (packet); | |
1283 | return; | |
1284 | } | |
1285 | } | |
9b20d036 | 1286 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1287 | c->name); |
dc8acb97 MS |
1288 | } |
1289 | ||
5a2468f5 | 1290 | static void |
444abaca DJ |
1291 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1292 | struct cmd_list_element *c, | |
1293 | const char *value) | |
5a2468f5 | 1294 | { |
444abaca | 1295 | struct packet_config *packet; |
5a2468f5 | 1296 | |
444abaca DJ |
1297 | for (packet = remote_protocol_packets; |
1298 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1299 | packet++) | |
1300 | { | |
1301 | if (&packet->detect == c->var) | |
1302 | { | |
1303 | show_packet_config_cmd (packet); | |
1304 | return; | |
1305 | } | |
1306 | } | |
9b20d036 | 1307 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 1308 | c->name); |
5a2468f5 JM |
1309 | } |
1310 | ||
d471ea57 AC |
1311 | /* Should we try one of the 'Z' requests? */ |
1312 | ||
1313 | enum Z_packet_type | |
1314 | { | |
1315 | Z_PACKET_SOFTWARE_BP, | |
1316 | Z_PACKET_HARDWARE_BP, | |
1317 | Z_PACKET_WRITE_WP, | |
1318 | Z_PACKET_READ_WP, | |
1319 | Z_PACKET_ACCESS_WP, | |
1320 | NR_Z_PACKET_TYPES | |
1321 | }; | |
96baa820 | 1322 | |
d471ea57 | 1323 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1324 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1325 | |
7f19b9a2 | 1326 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1327 | |
1328 | static void | |
fba45db2 KB |
1329 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1330 | struct cmd_list_element *c) | |
96baa820 | 1331 | { |
d471ea57 | 1332 | int i; |
a744cf53 | 1333 | |
d471ea57 AC |
1334 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1335 | { | |
444abaca DJ |
1336 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1337 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1338 | } |
96baa820 JM |
1339 | } |
1340 | ||
1341 | static void | |
08546159 AC |
1342 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1343 | struct cmd_list_element *c, | |
1344 | const char *value) | |
96baa820 | 1345 | { |
d471ea57 | 1346 | int i; |
a744cf53 | 1347 | |
d471ea57 AC |
1348 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1349 | { | |
444abaca | 1350 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1351 | } |
96baa820 JM |
1352 | } |
1353 | ||
9d1f7ab2 MS |
1354 | /* Should we try the 'ThreadInfo' query packet? |
1355 | ||
1356 | This variable (NOT available to the user: auto-detect only!) | |
1357 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1358 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1359 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1360 | and set to false when the target fails to recognize it). */ |
1361 | ||
1362 | static int use_threadinfo_query; | |
1363 | static int use_threadextra_query; | |
1364 | ||
23860348 | 1365 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1366 | static struct async_signal_handler *sigint_remote_twice_token; |
1367 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1368 | |
74531fed PA |
1369 | \f |
1370 | /* Asynchronous signal handle registered as event loop source for | |
1371 | when we have pending events ready to be passed to the core. */ | |
1372 | ||
1373 | static struct async_event_handler *remote_async_inferior_event_token; | |
1374 | ||
1375 | /* Asynchronous signal handle registered as event loop source for when | |
1376 | the remote sent us a %Stop notification. The registered callback | |
1377 | will do a vStopped sequence to pull the rest of the events out of | |
1378 | the remote side into our event queue. */ | |
1379 | ||
1380 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1381 | \f |
1382 | ||
79d7f229 PA |
1383 | static ptid_t magic_null_ptid; |
1384 | static ptid_t not_sent_ptid; | |
1385 | static ptid_t any_thread_ptid; | |
1386 | ||
1387 | /* These are the threads which we last sent to the remote system. The | |
1388 | TID member will be -1 for all or -2 for not sent yet. */ | |
1389 | ||
1390 | static ptid_t general_thread; | |
1391 | static ptid_t continue_thread; | |
c5aa993b | 1392 | |
e6e4e701 PA |
1393 | /* This the traceframe which we last selected on the remote system. |
1394 | It will be -1 if no traceframe is selected. */ | |
1395 | static int remote_traceframe_number = -1; | |
1396 | ||
0b16c5cf PA |
1397 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1398 | detach instead of killing it when bailing out). */ | |
1399 | ||
1400 | static int | |
1401 | remote_query_attached (int pid) | |
1402 | { | |
1403 | struct remote_state *rs = get_remote_state (); | |
1404 | ||
1405 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1406 | return 0; | |
1407 | ||
1408 | if (remote_multi_process_p (rs)) | |
1409 | sprintf (rs->buf, "qAttached:%x", pid); | |
1410 | else | |
1411 | sprintf (rs->buf, "qAttached"); | |
1412 | ||
1413 | putpkt (rs->buf); | |
1414 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1415 | ||
1416 | switch (packet_ok (rs->buf, | |
1554e9be | 1417 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1418 | { |
1419 | case PACKET_OK: | |
1420 | if (strcmp (rs->buf, "1") == 0) | |
1421 | return 1; | |
1422 | break; | |
1423 | case PACKET_ERROR: | |
1424 | warning (_("Remote failure reply: %s"), rs->buf); | |
1425 | break; | |
1426 | case PACKET_UNKNOWN: | |
1427 | break; | |
1428 | } | |
1429 | ||
1430 | return 0; | |
1431 | } | |
1432 | ||
1941c569 PA |
1433 | /* Add PID to GDB's inferior table. Since we can be connected to a |
1434 | remote system before before knowing about any inferior, mark the | |
0b16c5cf PA |
1435 | target with execution when we find the first inferior. If ATTACHED |
1436 | is 1, then we had just attached to this inferior. If it is 0, then | |
1437 | we just created this inferior. If it is -1, then try querying the | |
1438 | remote stub to find out if it had attached to the inferior or | |
1439 | not. */ | |
1941c569 PA |
1440 | |
1441 | static struct inferior * | |
0b16c5cf | 1442 | remote_add_inferior (int pid, int attached) |
1941c569 | 1443 | { |
1941c569 PA |
1444 | struct inferior *inf; |
1445 | ||
0b16c5cf PA |
1446 | /* Check whether this process we're learning about is to be |
1447 | considered attached, or if is to be considered to have been | |
1448 | spawned by the stub. */ | |
1449 | if (attached == -1) | |
1450 | attached = remote_query_attached (pid); | |
1451 | ||
6c95b8df PA |
1452 | if (gdbarch_has_global_solist (target_gdbarch)) |
1453 | { | |
1454 | /* If the target shares code across all inferiors, then every | |
1455 | attach adds a new inferior. */ | |
1456 | inf = add_inferior (pid); | |
1457 | ||
1458 | /* ... and every inferior is bound to the same program space. | |
1459 | However, each inferior may still have its own address | |
1460 | space. */ | |
1461 | inf->aspace = maybe_new_address_space (); | |
1462 | inf->pspace = current_program_space; | |
1463 | } | |
1464 | else | |
1465 | { | |
1466 | /* In the traditional debugging scenario, there's a 1-1 match | |
1467 | between program/address spaces. We simply bind the inferior | |
1468 | to the program space's address space. */ | |
1469 | inf = current_inferior (); | |
1470 | inferior_appeared (inf, pid); | |
1471 | } | |
1941c569 | 1472 | |
0b16c5cf PA |
1473 | inf->attach_flag = attached; |
1474 | ||
1941c569 PA |
1475 | return inf; |
1476 | } | |
1477 | ||
1478 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1479 | according to RUNNING. */ | |
1480 | ||
c906108c | 1481 | static void |
1941c569 | 1482 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1483 | { |
1941c569 PA |
1484 | add_thread (ptid); |
1485 | ||
1486 | set_executing (ptid, running); | |
1487 | set_running (ptid, running); | |
1488 | } | |
1489 | ||
1490 | /* Come here when we learn about a thread id from the remote target. | |
1491 | It may be the first time we hear about such thread, so take the | |
1492 | opportunity to add it to GDB's thread list. In case this is the | |
1493 | first time we're noticing its corresponding inferior, add it to | |
1494 | GDB's inferior list as well. */ | |
1495 | ||
1496 | static void | |
1497 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1498 | { | |
c906108c SS |
1499 | /* If this is a new thread, add it to GDB's thread list. |
1500 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1501 | |
1502 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1503 | { | |
1504 | /* We're seeing an event on a thread id we knew had exited. | |
1505 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1506 | remote_add_thread (currthread, running); |
82f73884 PA |
1507 | return; |
1508 | } | |
1509 | ||
79d7f229 | 1510 | if (!in_thread_list (currthread)) |
c0a2216e | 1511 | { |
1941c569 | 1512 | struct inferior *inf = NULL; |
bad34192 | 1513 | int pid = ptid_get_pid (currthread); |
1941c569 | 1514 | |
bad34192 PA |
1515 | if (ptid_is_pid (inferior_ptid) |
1516 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1517 | { |
1518 | /* inferior_ptid has no thread member yet. This can happen | |
1519 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1520 | stub doesn't support qC. This is the first stop reported | |
1521 | after an attach, so this is the main thread. Update the | |
1522 | ptid in the thread list. */ | |
bad34192 PA |
1523 | if (in_thread_list (pid_to_ptid (pid))) |
1524 | thread_change_ptid (inferior_ptid, currthread); | |
1525 | else | |
1526 | { | |
1527 | remote_add_thread (currthread, running); | |
1528 | inferior_ptid = currthread; | |
1529 | } | |
dc146f7c | 1530 | return; |
c0a2216e | 1531 | } |
82f73884 PA |
1532 | |
1533 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1534 | { |
1535 | /* inferior_ptid is not set yet. This can happen with the | |
1536 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1537 | doesn't support qC. This is the first stop reported | |
1538 | after an attach, so this is the main thread. Update the | |
1539 | ptid in the thread list. */ | |
dc146f7c | 1540 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1541 | return; |
c0a2216e | 1542 | } |
82f73884 | 1543 | |
29c87f7f PA |
1544 | /* When connecting to a target remote, or to a target |
1545 | extended-remote which already was debugging an inferior, we | |
1546 | may not know about it yet. Add it before adding its child | |
1547 | thread, so notifications are emitted in a sensible order. */ | |
1548 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
0b16c5cf | 1549 | inf = remote_add_inferior (ptid_get_pid (currthread), -1); |
29c87f7f | 1550 | |
82f73884 | 1551 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1552 | remote_add_thread (currthread, running); |
1553 | ||
1554 | /* If we found a new inferior, let the common code do whatever | |
1555 | it needs to with it (e.g., read shared libraries, insert | |
1556 | breakpoints). */ | |
1557 | if (inf != NULL) | |
1558 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1559 | } |
c906108c SS |
1560 | } |
1561 | ||
dc146f7c VP |
1562 | /* Return the private thread data, creating it if necessary. */ |
1563 | ||
1564 | struct private_thread_info * | |
1565 | demand_private_info (ptid_t ptid) | |
1566 | { | |
1567 | struct thread_info *info = find_thread_ptid (ptid); | |
1568 | ||
1569 | gdb_assert (info); | |
1570 | ||
1571 | if (!info->private) | |
1572 | { | |
1573 | info->private = xmalloc (sizeof (*(info->private))); | |
1574 | info->private_dtor = free_private_thread_info; | |
1575 | info->private->core = -1; | |
1576 | info->private->extra = 0; | |
1577 | } | |
1578 | ||
1579 | return info->private; | |
1580 | } | |
1581 | ||
74531fed PA |
1582 | /* Call this function as a result of |
1583 | 1) A halt indication (T packet) containing a thread id | |
1584 | 2) A direct query of currthread | |
0df8b418 | 1585 | 3) Successful execution of set thread */ |
74531fed PA |
1586 | |
1587 | static void | |
1588 | record_currthread (ptid_t currthread) | |
1589 | { | |
1590 | general_thread = currthread; | |
74531fed PA |
1591 | } |
1592 | ||
89be2091 DJ |
1593 | static char *last_pass_packet; |
1594 | ||
1595 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1596 | it can simply pass through to the inferior without reporting. */ | |
1597 | ||
1598 | static void | |
2455069d | 1599 | remote_pass_signals (int numsigs, unsigned char *pass_signals) |
89be2091 DJ |
1600 | { |
1601 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1602 | { | |
1603 | char *pass_packet, *p; | |
89be2091 DJ |
1604 | int count = 0, i; |
1605 | ||
1606 | gdb_assert (numsigs < 256); | |
1607 | for (i = 0; i < numsigs; i++) | |
1608 | { | |
2455069d | 1609 | if (pass_signals[i]) |
89be2091 DJ |
1610 | count++; |
1611 | } | |
1612 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1613 | strcpy (pass_packet, "QPassSignals:"); | |
1614 | p = pass_packet + strlen (pass_packet); | |
1615 | for (i = 0; i < numsigs; i++) | |
1616 | { | |
2455069d | 1617 | if (pass_signals[i]) |
89be2091 DJ |
1618 | { |
1619 | if (i >= 16) | |
1620 | *p++ = tohex (i >> 4); | |
1621 | *p++ = tohex (i & 15); | |
1622 | if (count) | |
1623 | *p++ = ';'; | |
1624 | else | |
1625 | break; | |
1626 | count--; | |
1627 | } | |
1628 | } | |
1629 | *p = 0; | |
1630 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1631 | { | |
1632 | struct remote_state *rs = get_remote_state (); | |
1633 | char *buf = rs->buf; | |
1634 | ||
1635 | putpkt (pass_packet); | |
1636 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1637 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1638 | if (last_pass_packet) | |
1639 | xfree (last_pass_packet); | |
1640 | last_pass_packet = pass_packet; | |
1641 | } | |
1642 | else | |
1643 | xfree (pass_packet); | |
1644 | } | |
1645 | } | |
1646 | ||
79d7f229 PA |
1647 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1648 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1649 | thread. If GEN is set, set the general thread, if not, then set | |
1650 | the step/continue thread. */ | |
c906108c | 1651 | static void |
79d7f229 | 1652 | set_thread (struct ptid ptid, int gen) |
c906108c | 1653 | { |
d01949b6 | 1654 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1655 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1656 | char *buf = rs->buf; |
79d7f229 | 1657 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1658 | |
79d7f229 | 1659 | if (ptid_equal (state, ptid)) |
c906108c SS |
1660 | return; |
1661 | ||
79d7f229 PA |
1662 | *buf++ = 'H'; |
1663 | *buf++ = gen ? 'g' : 'c'; | |
1664 | if (ptid_equal (ptid, magic_null_ptid)) | |
1665 | xsnprintf (buf, endbuf - buf, "0"); | |
1666 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1667 | xsnprintf (buf, endbuf - buf, "0"); | |
1668 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1669 | xsnprintf (buf, endbuf - buf, "-1"); | |
1670 | else | |
82f73884 | 1671 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1672 | putpkt (rs->buf); |
6d820c5c | 1673 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1674 | if (gen) |
79d7f229 | 1675 | general_thread = ptid; |
c906108c | 1676 | else |
79d7f229 | 1677 | continue_thread = ptid; |
c906108c | 1678 | } |
79d7f229 PA |
1679 | |
1680 | static void | |
1681 | set_general_thread (struct ptid ptid) | |
1682 | { | |
1683 | set_thread (ptid, 1); | |
1684 | } | |
1685 | ||
1686 | static void | |
1687 | set_continue_thread (struct ptid ptid) | |
1688 | { | |
1689 | set_thread (ptid, 0); | |
1690 | } | |
1691 | ||
3c9c4b83 PA |
1692 | /* Change the remote current process. Which thread within the process |
1693 | ends up selected isn't important, as long as it is the same process | |
1694 | as what INFERIOR_PTID points to. | |
1695 | ||
1696 | This comes from that fact that there is no explicit notion of | |
1697 | "selected process" in the protocol. The selected process for | |
1698 | general operations is the process the selected general thread | |
1699 | belongs to. */ | |
1700 | ||
1701 | static void | |
1702 | set_general_process (void) | |
1703 | { | |
1704 | struct remote_state *rs = get_remote_state (); | |
1705 | ||
1706 | /* If the remote can't handle multiple processes, don't bother. */ | |
1707 | if (!remote_multi_process_p (rs)) | |
1708 | return; | |
1709 | ||
1710 | /* We only need to change the remote current thread if it's pointing | |
1711 | at some other process. */ | |
1712 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1713 | set_general_thread (inferior_ptid); | |
1714 | } | |
1715 | ||
c906108c | 1716 | \f |
79d7f229 PA |
1717 | /* Return nonzero if the thread PTID is still alive on the remote |
1718 | system. */ | |
c906108c SS |
1719 | |
1720 | static int | |
28439f5e | 1721 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1722 | { |
6d820c5c | 1723 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1724 | char *p, *endp; |
c906108c | 1725 | |
c0a2216e PA |
1726 | if (ptid_equal (ptid, magic_null_ptid)) |
1727 | /* The main thread is always alive. */ | |
1728 | return 1; | |
1729 | ||
1730 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1731 | /* The main thread is always alive. This can happen after a | |
1732 | vAttach, if the remote side doesn't support | |
1733 | multi-threading. */ | |
1734 | return 1; | |
1735 | ||
82f73884 PA |
1736 | p = rs->buf; |
1737 | endp = rs->buf + get_remote_packet_size (); | |
1738 | ||
1739 | *p++ = 'T'; | |
1740 | write_ptid (p, endp, ptid); | |
1741 | ||
2e9f7625 | 1742 | putpkt (rs->buf); |
6d820c5c | 1743 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1744 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1745 | } |
1746 | ||
1747 | /* About these extended threadlist and threadinfo packets. They are | |
1748 | variable length packets but, the fields within them are often fixed | |
1749 | length. They are redundent enough to send over UDP as is the | |
1750 | remote protocol in general. There is a matching unit test module | |
1751 | in libstub. */ | |
1752 | ||
cce74817 JM |
1753 | #define OPAQUETHREADBYTES 8 |
1754 | ||
1755 | /* a 64 bit opaque identifier */ | |
1756 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1757 | ||
23860348 | 1758 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 1759 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 1760 | changable. */ |
cce74817 JM |
1761 | |
1762 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 1763 | Plan to fix this. */ |
cce74817 | 1764 | |
23860348 | 1765 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1766 | |
9d1f7ab2 | 1767 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1768 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1769 | |
1770 | struct gdb_ext_thread_info | |
c5aa993b | 1771 | { |
23860348 | 1772 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1773 | int active; /* Has state interesting to GDB? |
23860348 | 1774 | regs, stack. */ |
2bc416ba | 1775 | char display[256]; /* Brief state display, name, |
cedea757 | 1776 | blocked/suspended. */ |
23860348 | 1777 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1778 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1779 | whatever. */ |
c5aa993b | 1780 | }; |
cce74817 JM |
1781 | |
1782 | /* The volume of remote transfers can be limited by submitting | |
1783 | a mask containing bits specifying the desired information. | |
1784 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 1785 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
1786 | |
1787 | #define TAG_THREADID 1 | |
1788 | #define TAG_EXISTS 2 | |
1789 | #define TAG_DISPLAY 4 | |
1790 | #define TAG_THREADNAME 8 | |
c5aa993b | 1791 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1792 | |
23860348 | 1793 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1794 | |
b2dd6311 | 1795 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1796 | |
a14ed312 | 1797 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1798 | |
a14ed312 | 1799 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1800 | |
23860348 | 1801 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1802 | |
a14ed312 | 1803 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1804 | |
a14ed312 | 1805 | static char *pack_int (char *buf, int value); |
cce74817 | 1806 | |
a14ed312 | 1807 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1808 | |
a14ed312 | 1809 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1810 | |
23860348 | 1811 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1812 | |
23860348 | 1813 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1814 | |
23860348 | 1815 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1816 | |
23860348 | 1817 | static int threadref_to_int (threadref *ref); |
cce74817 | 1818 | |
23860348 | 1819 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1820 | |
23860348 | 1821 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1822 | |
2bc416ba | 1823 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1824 | threadref *id); |
cce74817 | 1825 | |
a14ed312 | 1826 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1827 | threadref *expectedref, |
a14ed312 KB |
1828 | struct gdb_ext_thread_info |
1829 | *info); | |
cce74817 JM |
1830 | |
1831 | ||
2bc416ba | 1832 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1833 | int fieldset, /*TAG mask */ |
a14ed312 | 1834 | struct gdb_ext_thread_info *info); |
cce74817 | 1835 | |
a14ed312 KB |
1836 | static char *pack_threadlist_request (char *pkt, int startflag, |
1837 | int threadcount, | |
23860348 | 1838 | threadref *nextthread); |
cce74817 | 1839 | |
a14ed312 KB |
1840 | static int parse_threadlist_response (char *pkt, |
1841 | int result_limit, | |
23860348 | 1842 | threadref *original_echo, |
2bc416ba | 1843 | threadref *resultlist, |
23860348 | 1844 | int *doneflag); |
cce74817 | 1845 | |
a14ed312 | 1846 | static int remote_get_threadlist (int startflag, |
23860348 | 1847 | threadref *nextthread, |
a14ed312 KB |
1848 | int result_limit, |
1849 | int *done, | |
2bc416ba | 1850 | int *result_count, |
23860348 | 1851 | threadref *threadlist); |
cce74817 | 1852 | |
23860348 | 1853 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1854 | |
a14ed312 KB |
1855 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1856 | void *context, int looplimit); | |
cce74817 | 1857 | |
23860348 | 1858 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1859 | |
82f73884 PA |
1860 | |
1861 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1862 | buffer we're allowed to write to. Returns | |
1863 | BUF+CHARACTERS_WRITTEN. */ | |
1864 | ||
1865 | static char * | |
1866 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1867 | { | |
1868 | int pid, tid; | |
1869 | struct remote_state *rs = get_remote_state (); | |
1870 | ||
1871 | if (remote_multi_process_p (rs)) | |
1872 | { | |
1873 | pid = ptid_get_pid (ptid); | |
1874 | if (pid < 0) | |
1875 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1876 | else | |
1877 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1878 | } | |
1879 | tid = ptid_get_tid (ptid); | |
1880 | if (tid < 0) | |
1881 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1882 | else | |
1883 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1884 | ||
1885 | return buf; | |
1886 | } | |
1887 | ||
1888 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1889 | passed the last parsed char. Returns null_ptid on error. */ | |
1890 | ||
1891 | static ptid_t | |
1892 | read_ptid (char *buf, char **obuf) | |
1893 | { | |
1894 | char *p = buf; | |
1895 | char *pp; | |
1896 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1897 | |
1898 | if (*p == 'p') | |
1899 | { | |
1900 | /* Multi-process ptid. */ | |
1901 | pp = unpack_varlen_hex (p + 1, &pid); | |
1902 | if (*pp != '.') | |
b37520b6 | 1903 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
1904 | |
1905 | p = pp; | |
1906 | pp = unpack_varlen_hex (p + 1, &tid); | |
1907 | if (obuf) | |
1908 | *obuf = pp; | |
1909 | return ptid_build (pid, 0, tid); | |
1910 | } | |
1911 | ||
1912 | /* No multi-process. Just a tid. */ | |
1913 | pp = unpack_varlen_hex (p, &tid); | |
1914 | ||
1915 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1916 | what's in inferior_ptid, unless it's null at this point. If so, |
1917 | then since there's no way to know the pid of the reported | |
1918 | threads, use the magic number. */ | |
1919 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1920 | pid = ptid_get_pid (magic_null_ptid); | |
1921 | else | |
1922 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1923 | |
1924 | if (obuf) | |
1925 | *obuf = pp; | |
1926 | return ptid_build (pid, 0, tid); | |
1927 | } | |
1928 | ||
23860348 | 1929 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1930 | |
1931 | static const char hexchars[] = "0123456789abcdef"; | |
1932 | ||
1933 | static int | |
fba45db2 | 1934 | ishex (int ch, int *val) |
c906108c SS |
1935 | { |
1936 | if ((ch >= 'a') && (ch <= 'f')) | |
1937 | { | |
1938 | *val = ch - 'a' + 10; | |
1939 | return 1; | |
1940 | } | |
1941 | if ((ch >= 'A') && (ch <= 'F')) | |
1942 | { | |
1943 | *val = ch - 'A' + 10; | |
1944 | return 1; | |
1945 | } | |
1946 | if ((ch >= '0') && (ch <= '9')) | |
1947 | { | |
1948 | *val = ch - '0'; | |
1949 | return 1; | |
1950 | } | |
1951 | return 0; | |
1952 | } | |
1953 | ||
1954 | static int | |
fba45db2 | 1955 | stubhex (int ch) |
c906108c SS |
1956 | { |
1957 | if (ch >= 'a' && ch <= 'f') | |
1958 | return ch - 'a' + 10; | |
1959 | if (ch >= '0' && ch <= '9') | |
1960 | return ch - '0'; | |
1961 | if (ch >= 'A' && ch <= 'F') | |
1962 | return ch - 'A' + 10; | |
1963 | return -1; | |
1964 | } | |
1965 | ||
1966 | static int | |
fba45db2 | 1967 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1968 | { |
1969 | int nibble; | |
1970 | int retval = 0; | |
1971 | ||
1972 | while (fieldlength) | |
1973 | { | |
1974 | nibble = stubhex (*buff++); | |
1975 | retval |= nibble; | |
1976 | fieldlength--; | |
1977 | if (fieldlength) | |
1978 | retval = retval << 4; | |
1979 | } | |
1980 | return retval; | |
1981 | } | |
1982 | ||
1983 | char * | |
fba45db2 | 1984 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1985 | ULONGEST *result) |
c906108c SS |
1986 | { |
1987 | int nibble; | |
d49c44d5 | 1988 | ULONGEST retval = 0; |
c906108c SS |
1989 | |
1990 | while (ishex (*buff, &nibble)) | |
1991 | { | |
1992 | buff++; | |
1993 | retval = retval << 4; | |
1994 | retval |= nibble & 0x0f; | |
1995 | } | |
1996 | *result = retval; | |
1997 | return buff; | |
1998 | } | |
1999 | ||
2000 | static char * | |
fba45db2 | 2001 | unpack_nibble (char *buf, int *val) |
c906108c | 2002 | { |
b7589f7d | 2003 | *val = fromhex (*buf++); |
c906108c SS |
2004 | return buf; |
2005 | } | |
2006 | ||
2007 | static char * | |
fba45db2 | 2008 | pack_nibble (char *buf, int nibble) |
c906108c SS |
2009 | { |
2010 | *buf++ = hexchars[(nibble & 0x0f)]; | |
2011 | return buf; | |
2012 | } | |
2013 | ||
2014 | static char * | |
fba45db2 | 2015 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
2016 | { |
2017 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
2018 | *pkt++ = hexchars[(byte & 0xf)]; | |
2019 | return pkt; | |
2020 | } | |
2021 | ||
2022 | static char * | |
fba45db2 | 2023 | unpack_byte (char *buf, int *value) |
c906108c SS |
2024 | { |
2025 | *value = stub_unpack_int (buf, 2); | |
2026 | return buf + 2; | |
2027 | } | |
2028 | ||
2029 | static char * | |
fba45db2 | 2030 | pack_int (char *buf, int value) |
c906108c SS |
2031 | { |
2032 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2033 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2034 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2035 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2036 | return buf; | |
2037 | } | |
2038 | ||
2039 | static char * | |
fba45db2 | 2040 | unpack_int (char *buf, int *value) |
c906108c SS |
2041 | { |
2042 | *value = stub_unpack_int (buf, 8); | |
2043 | return buf + 8; | |
2044 | } | |
2045 | ||
23860348 | 2046 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2047 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2048 | |
2049 | static char * | |
fba45db2 | 2050 | pack_string (char *pkt, char *string) |
c906108c SS |
2051 | { |
2052 | char ch; | |
2053 | int len; | |
2054 | ||
2055 | len = strlen (string); | |
2056 | if (len > 200) | |
23860348 | 2057 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2058 | pkt = pack_hex_byte (pkt, len); |
2059 | while (len-- > 0) | |
2060 | { | |
2061 | ch = *string++; | |
2062 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2063 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2064 | *pkt++ = ch; |
2065 | } | |
2066 | return pkt; | |
2067 | } | |
2068 | #endif /* 0 (unused) */ | |
2069 | ||
2070 | static char * | |
fba45db2 | 2071 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2072 | { |
2073 | while (length--) | |
2074 | *dest++ = *src++; | |
2075 | *dest = '\0'; | |
2076 | return src; | |
2077 | } | |
2078 | ||
2079 | static char * | |
fba45db2 | 2080 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2081 | { |
2082 | char *limit; | |
2083 | unsigned char *altid; | |
2084 | ||
2085 | altid = (unsigned char *) id; | |
2086 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2087 | while (pkt < limit) | |
2088 | pkt = pack_hex_byte (pkt, *altid++); | |
2089 | return pkt; | |
2090 | } | |
2091 | ||
2092 | ||
2093 | static char * | |
fba45db2 | 2094 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2095 | { |
2096 | char *altref; | |
2097 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2098 | int x, y; | |
2099 | ||
2100 | altref = (char *) id; | |
2101 | ||
2102 | while (inbuf < limit) | |
2103 | { | |
2104 | x = stubhex (*inbuf++); | |
2105 | y = stubhex (*inbuf++); | |
2106 | *altref++ = (x << 4) | y; | |
2107 | } | |
2108 | return inbuf; | |
2109 | } | |
2110 | ||
2111 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 2112 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
2113 | to use 64bit thread references internally. This is an adapter |
2114 | function. */ | |
2115 | ||
2116 | void | |
fba45db2 | 2117 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2118 | { |
2119 | unsigned char *scan; | |
2120 | ||
2121 | scan = (unsigned char *) id; | |
2122 | { | |
2123 | int i = 4; | |
2124 | while (i--) | |
2125 | *scan++ = 0; | |
2126 | } | |
2127 | *scan++ = (value >> 24) & 0xff; | |
2128 | *scan++ = (value >> 16) & 0xff; | |
2129 | *scan++ = (value >> 8) & 0xff; | |
2130 | *scan++ = (value & 0xff); | |
2131 | } | |
2132 | ||
2133 | static int | |
fba45db2 | 2134 | threadref_to_int (threadref *ref) |
c906108c SS |
2135 | { |
2136 | int i, value = 0; | |
2137 | unsigned char *scan; | |
2138 | ||
cfd77fa1 | 2139 | scan = *ref; |
c906108c SS |
2140 | scan += 4; |
2141 | i = 4; | |
2142 | while (i-- > 0) | |
2143 | value = (value << 8) | ((*scan++) & 0xff); | |
2144 | return value; | |
2145 | } | |
2146 | ||
2147 | static void | |
fba45db2 | 2148 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2149 | { |
2150 | int i; | |
2151 | unsigned char *csrc, *cdest; | |
2152 | ||
2153 | csrc = (unsigned char *) src; | |
2154 | cdest = (unsigned char *) dest; | |
2155 | i = 8; | |
2156 | while (i--) | |
2157 | *cdest++ = *csrc++; | |
2158 | } | |
2159 | ||
2160 | static int | |
fba45db2 | 2161 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2162 | { |
23860348 | 2163 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2164 | #if 0 |
2165 | unsigned char *srcp, *destp; | |
2166 | int i, result; | |
2167 | srcp = (char *) src; | |
2168 | destp = (char *) dest; | |
2169 | ||
2170 | result = 1; | |
2171 | while (i-- > 0) | |
2172 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2173 | return result; | |
2174 | #endif | |
2175 | return 1; | |
2176 | } | |
2177 | ||
2178 | /* | |
c5aa993b JM |
2179 | threadid:1, # always request threadid |
2180 | context_exists:2, | |
2181 | display:4, | |
2182 | unique_name:8, | |
2183 | more_display:16 | |
2184 | */ | |
c906108c SS |
2185 | |
2186 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2187 | ||
2188 | static char * | |
fba45db2 | 2189 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2190 | { |
23860348 MS |
2191 | *pkt++ = 'q'; /* Info Query */ |
2192 | *pkt++ = 'P'; /* process or thread info */ | |
2193 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2194 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2195 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2196 | return pkt; |
2197 | } | |
2198 | ||
23860348 | 2199 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2200 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2201 | add more fields as time goes by. */ |
c906108c | 2202 | |
23860348 | 2203 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2204 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2205 | fetch registers and its stack? */ |
c5aa993b | 2206 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2207 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2208 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2209 | the process. */ |
c906108c SS |
2210 | |
2211 | static int | |
fba45db2 KB |
2212 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2213 | struct gdb_ext_thread_info *info) | |
c906108c | 2214 | { |
d01949b6 | 2215 | struct remote_state *rs = get_remote_state (); |
c906108c | 2216 | int mask, length; |
cfd77fa1 | 2217 | int tag; |
c906108c | 2218 | threadref ref; |
6d820c5c | 2219 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2220 | int retval = 1; |
2221 | ||
23860348 | 2222 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2223 | info->active = 0; |
2224 | info->display[0] = '\0'; | |
2225 | info->shortname[0] = '\0'; | |
2226 | info->more_display[0] = '\0'; | |
2227 | ||
23860348 MS |
2228 | /* Assume the characters indicating the packet type have been |
2229 | stripped. */ | |
c906108c SS |
2230 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2231 | pkt = unpack_threadid (pkt, &ref); | |
2232 | ||
2233 | if (mask == 0) | |
8a3fe4f8 | 2234 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2235 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2236 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2237 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2238 | return 0; |
2239 | } | |
2240 | copy_threadref (&info->threadid, &ref); | |
2241 | ||
23860348 | 2242 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2243 | |
23860348 MS |
2244 | /* Packets are terminated with nulls. */ |
2245 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2246 | { |
2247 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2248 | pkt = unpack_byte (pkt, &length); /* length */ |
2249 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2250 | { |
8a3fe4f8 | 2251 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2252 | retval = 0; |
2253 | break; | |
2254 | } | |
2255 | if (tag == TAG_THREADID) | |
2256 | { | |
2257 | if (length != 16) | |
2258 | { | |
8a3fe4f8 | 2259 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2260 | retval = 0; |
2261 | break; | |
2262 | } | |
2263 | pkt = unpack_threadid (pkt, &ref); | |
2264 | mask = mask & ~TAG_THREADID; | |
2265 | continue; | |
2266 | } | |
2267 | if (tag == TAG_EXISTS) | |
2268 | { | |
2269 | info->active = stub_unpack_int (pkt, length); | |
2270 | pkt += length; | |
2271 | mask = mask & ~(TAG_EXISTS); | |
2272 | if (length > 8) | |
2273 | { | |
8a3fe4f8 | 2274 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2275 | retval = 0; |
2276 | break; | |
2277 | } | |
2278 | continue; | |
2279 | } | |
2280 | if (tag == TAG_THREADNAME) | |
2281 | { | |
2282 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2283 | mask = mask & ~TAG_THREADNAME; | |
2284 | continue; | |
2285 | } | |
2286 | if (tag == TAG_DISPLAY) | |
2287 | { | |
2288 | pkt = unpack_string (pkt, &info->display[0], length); | |
2289 | mask = mask & ~TAG_DISPLAY; | |
2290 | continue; | |
2291 | } | |
2292 | if (tag == TAG_MOREDISPLAY) | |
2293 | { | |
2294 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2295 | mask = mask & ~TAG_MOREDISPLAY; | |
2296 | continue; | |
2297 | } | |
8a3fe4f8 | 2298 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2299 | break; /* Not a tag we know about. */ |
c906108c SS |
2300 | } |
2301 | return retval; | |
2302 | } | |
2303 | ||
2304 | static int | |
fba45db2 KB |
2305 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2306 | struct gdb_ext_thread_info *info) | |
c906108c | 2307 | { |
d01949b6 | 2308 | struct remote_state *rs = get_remote_state (); |
c906108c | 2309 | int result; |
c906108c | 2310 | |
2e9f7625 DJ |
2311 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2312 | putpkt (rs->buf); | |
6d820c5c | 2313 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2314 | |
2315 | if (rs->buf[0] == '\0') | |
2316 | return 0; | |
2317 | ||
2e9f7625 | 2318 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2319 | threadid, info); |
c906108c SS |
2320 | return result; |
2321 | } | |
2322 | ||
c906108c SS |
2323 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2324 | ||
2325 | static char * | |
fba45db2 KB |
2326 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2327 | threadref *nextthread) | |
c906108c SS |
2328 | { |
2329 | *pkt++ = 'q'; /* info query packet */ | |
2330 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2331 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2332 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2333 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2334 | *pkt = '\0'; | |
2335 | return pkt; | |
2336 | } | |
2337 | ||
2338 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2339 | ||
2340 | static int | |
fba45db2 KB |
2341 | parse_threadlist_response (char *pkt, int result_limit, |
2342 | threadref *original_echo, threadref *resultlist, | |
2343 | int *doneflag) | |
c906108c | 2344 | { |
d01949b6 | 2345 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2346 | char *limit; |
2347 | int count, resultcount, done; | |
2348 | ||
2349 | resultcount = 0; | |
2350 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2351 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2352 | /* done parse past here */ |
c906108c SS |
2353 | pkt = unpack_byte (pkt, &count); /* count field */ |
2354 | pkt = unpack_nibble (pkt, &done); | |
2355 | /* The first threadid is the argument threadid. */ | |
2356 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2357 | while ((count-- > 0) && (pkt < limit)) | |
2358 | { | |
2359 | pkt = unpack_threadid (pkt, resultlist++); | |
2360 | if (resultcount++ >= result_limit) | |
2361 | break; | |
2362 | } | |
2363 | if (doneflag) | |
2364 | *doneflag = done; | |
2365 | return resultcount; | |
2366 | } | |
2367 | ||
2368 | static int | |
fba45db2 KB |
2369 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2370 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2371 | { |
d01949b6 | 2372 | struct remote_state *rs = get_remote_state (); |
c906108c | 2373 | static threadref echo_nextthread; |
c906108c SS |
2374 | int result = 1; |
2375 | ||
23860348 | 2376 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2377 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2378 | >= get_remote_packet_size ()) | |
ea9c271d | 2379 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2380 | |
6d820c5c DJ |
2381 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2382 | putpkt (rs->buf); | |
2383 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2384 | |
d8f2712d | 2385 | if (*rs->buf == '\0') |
21bce120 | 2386 | return 0; |
d8f2712d VP |
2387 | else |
2388 | *result_count = | |
2389 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2390 | threadlist, done); | |
c906108c SS |
2391 | |
2392 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2393 | { | |
23860348 MS |
2394 | /* FIXME: This is a good reason to drop the packet. */ |
2395 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2396 | /* Possabilities : |
2397 | retransmit immediatly - race conditions | |
2398 | retransmit after timeout - yes | |
2399 | exit | |
2400 | wait for packet, then exit | |
2401 | */ | |
8a3fe4f8 | 2402 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2403 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2404 | } |
2405 | if (*result_count <= 0) | |
2406 | { | |
2407 | if (*done != 1) | |
2408 | { | |
8a3fe4f8 | 2409 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2410 | result = 0; |
2411 | } | |
2412 | return result; /* break; */ | |
2413 | } | |
2414 | if (*result_count > result_limit) | |
2415 | { | |
2416 | *result_count = 0; | |
8a3fe4f8 | 2417 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2418 | return 0; |
2419 | } | |
2420 | return result; | |
2421 | } | |
2422 | ||
23860348 MS |
2423 | /* This is the interface between remote and threads, remotes upper |
2424 | interface. */ | |
c906108c SS |
2425 | |
2426 | /* remote_find_new_threads retrieves the thread list and for each | |
2427 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2428 | adding the thread if it does not already exist. This involves |
c906108c SS |
2429 | getting partial thread lists from the remote target so, polling the |
2430 | quit_flag is required. */ | |
2431 | ||
2432 | ||
23860348 | 2433 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2434 | |
2435 | #define MAXTHREADLISTRESULTS 32 | |
2436 | ||
2437 | static int | |
fba45db2 KB |
2438 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2439 | int looplimit) | |
c906108c SS |
2440 | { |
2441 | int done, i, result_count; | |
2442 | int startflag = 1; | |
2443 | int result = 1; | |
2444 | int loopcount = 0; | |
2445 | static threadref nextthread; | |
2446 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2447 | ||
2448 | done = 0; | |
2449 | while (!done) | |
2450 | { | |
2451 | if (loopcount++ > looplimit) | |
2452 | { | |
2453 | result = 0; | |
8a3fe4f8 | 2454 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2455 | break; |
2456 | } | |
2457 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2458 | &done, &result_count, resultthreadlist)) | |
2459 | { | |
2460 | result = 0; | |
2461 | break; | |
2462 | } | |
23860348 | 2463 | /* Clear for later iterations. */ |
c906108c SS |
2464 | startflag = 0; |
2465 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2466 | if (result_count >= 1) | |
2467 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2468 | i = 0; | |
2469 | while (result_count--) | |
2470 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2471 | break; | |
2472 | } | |
2473 | return result; | |
2474 | } | |
2475 | ||
2476 | static int | |
fba45db2 | 2477 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2478 | { |
79d7f229 PA |
2479 | int pid = ptid_get_pid (inferior_ptid); |
2480 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2481 | |
2482 | if (!in_thread_list (ptid)) | |
2483 | add_thread (ptid); | |
c906108c SS |
2484 | return 1; /* continue iterator */ |
2485 | } | |
2486 | ||
2487 | #define CRAZY_MAX_THREADS 1000 | |
2488 | ||
39f77062 KB |
2489 | static ptid_t |
2490 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2491 | { |
d01949b6 | 2492 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2493 | |
2494 | putpkt ("qC"); | |
6d820c5c | 2495 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2496 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2497 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2498 | else |
2499 | return oldpid; | |
2500 | } | |
2501 | ||
802188a7 RM |
2502 | /* Find new threads for info threads command. |
2503 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2504 | */ |
cce74817 JM |
2505 | |
2506 | static void | |
fba45db2 | 2507 | remote_find_new_threads (void) |
c906108c | 2508 | { |
c5aa993b JM |
2509 | remote_threadlist_iterator (remote_newthread_step, 0, |
2510 | CRAZY_MAX_THREADS); | |
c906108c SS |
2511 | } |
2512 | ||
dc146f7c VP |
2513 | #if defined(HAVE_LIBEXPAT) |
2514 | ||
2515 | typedef struct thread_item | |
2516 | { | |
2517 | ptid_t ptid; | |
2518 | char *extra; | |
2519 | int core; | |
2520 | } thread_item_t; | |
2521 | DEF_VEC_O(thread_item_t); | |
2522 | ||
2523 | struct threads_parsing_context | |
2524 | { | |
2525 | VEC (thread_item_t) *items; | |
2526 | }; | |
2527 | ||
2528 | static void | |
2529 | start_thread (struct gdb_xml_parser *parser, | |
2530 | const struct gdb_xml_element *element, | |
2531 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2532 | { | |
2533 | struct threads_parsing_context *data = user_data; | |
2534 | ||
2535 | struct thread_item item; | |
2536 | char *id; | |
3d2c1d41 | 2537 | struct gdb_xml_value *attr; |
dc146f7c | 2538 | |
3d2c1d41 | 2539 | id = xml_find_attribute (attributes, "id")->value; |
dc146f7c VP |
2540 | item.ptid = read_ptid (id, NULL); |
2541 | ||
3d2c1d41 PA |
2542 | attr = xml_find_attribute (attributes, "core"); |
2543 | if (attr != NULL) | |
2544 | item.core = *(ULONGEST *) attr->value; | |
dc146f7c VP |
2545 | else |
2546 | item.core = -1; | |
2547 | ||
2548 | item.extra = 0; | |
2549 | ||
2550 | VEC_safe_push (thread_item_t, data->items, &item); | |
2551 | } | |
2552 | ||
2553 | static void | |
2554 | end_thread (struct gdb_xml_parser *parser, | |
2555 | const struct gdb_xml_element *element, | |
2556 | void *user_data, const char *body_text) | |
2557 | { | |
2558 | struct threads_parsing_context *data = user_data; | |
2559 | ||
2560 | if (body_text && *body_text) | |
2ae2a0b7 | 2561 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2562 | } |
2563 | ||
2564 | const struct gdb_xml_attribute thread_attributes[] = { | |
2565 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2566 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2567 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2568 | }; | |
2569 | ||
2570 | const struct gdb_xml_element thread_children[] = { | |
2571 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2572 | }; | |
2573 | ||
2574 | const struct gdb_xml_element threads_children[] = { | |
2575 | { "thread", thread_attributes, thread_children, | |
2576 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2577 | start_thread, end_thread }, | |
2578 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2579 | }; | |
2580 | ||
2581 | const struct gdb_xml_element threads_elements[] = { | |
2582 | { "threads", NULL, threads_children, | |
2583 | GDB_XML_EF_NONE, NULL, NULL }, | |
2584 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2585 | }; | |
2586 | ||
02357a4a PA |
2587 | /* Discard the contents of the constructed thread info context. */ |
2588 | ||
2589 | static void | |
2590 | clear_threads_parsing_context (void *p) | |
2591 | { | |
2592 | struct threads_parsing_context *context = p; | |
2593 | int i; | |
2594 | struct thread_item *item; | |
2595 | ||
2596 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2597 | xfree (item->extra); | |
2598 | ||
2599 | VEC_free (thread_item_t, context->items); | |
2600 | } | |
2601 | ||
dc146f7c VP |
2602 | #endif |
2603 | ||
9d1f7ab2 MS |
2604 | /* |
2605 | * Find all threads for info threads command. | |
2606 | * Uses new thread protocol contributed by Cisco. | |
2607 | * Falls back and attempts to use the older method (above) | |
2608 | * if the target doesn't respond to the new method. | |
2609 | */ | |
2610 | ||
0f71a2f6 | 2611 | static void |
28439f5e | 2612 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2613 | { |
d01949b6 | 2614 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2615 | char *bufp; |
79d7f229 | 2616 | ptid_t new_thread; |
0f71a2f6 JM |
2617 | |
2618 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2619 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2620 | |
dc146f7c VP |
2621 | #if defined(HAVE_LIBEXPAT) |
2622 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2623 | { | |
2624 | char *xml = target_read_stralloc (¤t_target, | |
2625 | TARGET_OBJECT_THREADS, NULL); | |
2626 | ||
2627 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
efc0eabd | 2628 | |
dc146f7c VP |
2629 | if (xml && *xml) |
2630 | { | |
dc146f7c | 2631 | struct threads_parsing_context context; |
dc146f7c | 2632 | |
efc0eabd PA |
2633 | context.items = NULL; |
2634 | make_cleanup (clear_threads_parsing_context, &context); | |
dc146f7c | 2635 | |
efc0eabd PA |
2636 | if (gdb_xml_parse_quick (_("threads"), "threads.dtd", |
2637 | threads_elements, xml, &context) == 0) | |
dc146f7c VP |
2638 | { |
2639 | int i; | |
2640 | struct thread_item *item; | |
2641 | ||
3e43a32a MS |
2642 | for (i = 0; |
2643 | VEC_iterate (thread_item_t, context.items, i, item); | |
2644 | ++i) | |
dc146f7c VP |
2645 | { |
2646 | if (!ptid_equal (item->ptid, null_ptid)) | |
2647 | { | |
2648 | struct private_thread_info *info; | |
2649 | /* In non-stop mode, we assume new found threads | |
2650 | are running until proven otherwise with a | |
2651 | stop reply. In all-stop, we can only get | |
2652 | here if all threads are stopped. */ | |
2653 | int running = non_stop ? 1 : 0; | |
2654 | ||
2655 | remote_notice_new_inferior (item->ptid, running); | |
2656 | ||
2657 | info = demand_private_info (item->ptid); | |
2658 | info->core = item->core; | |
2659 | info->extra = item->extra; | |
02357a4a | 2660 | item->extra = NULL; |
dc146f7c | 2661 | } |
dc146f7c VP |
2662 | } |
2663 | } | |
dc146f7c VP |
2664 | } |
2665 | ||
2666 | do_cleanups (back_to); | |
2667 | return; | |
2668 | } | |
2669 | #endif | |
2670 | ||
9d1f7ab2 MS |
2671 | if (use_threadinfo_query) |
2672 | { | |
2673 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2674 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2675 | bufp = rs->buf; |
9d1f7ab2 | 2676 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2677 | { |
9d1f7ab2 MS |
2678 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2679 | { | |
2680 | do | |
2681 | { | |
82f73884 | 2682 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2683 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2684 | { |
74531fed | 2685 | /* In non-stop mode, we assume new found threads |
1941c569 | 2686 | are running until proven otherwise with a |
74531fed PA |
2687 | stop reply. In all-stop, we can only get |
2688 | here if all threads are stopped. */ | |
1941c569 PA |
2689 | int running = non_stop ? 1 : 0; |
2690 | ||
2691 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2692 | } |
9d1f7ab2 MS |
2693 | } |
2694 | while (*bufp++ == ','); /* comma-separated list */ | |
2695 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2696 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2697 | bufp = rs->buf; |
9d1f7ab2 MS |
2698 | } |
2699 | return; /* done */ | |
2700 | } | |
2701 | } | |
2702 | ||
74531fed PA |
2703 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2704 | if (non_stop) | |
2705 | return; | |
2706 | ||
23860348 | 2707 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2708 | use_threadinfo_query = 0; |
2709 | remote_find_new_threads (); | |
2710 | return; | |
2711 | } | |
2712 | ||
802188a7 | 2713 | /* |
9d1f7ab2 MS |
2714 | * Collect a descriptive string about the given thread. |
2715 | * The target may say anything it wants to about the thread | |
2716 | * (typically info about its blocked / runnable state, name, etc.). | |
2717 | * This string will appear in the info threads display. | |
802188a7 | 2718 | * |
9d1f7ab2 MS |
2719 | * Optional: targets are not required to implement this function. |
2720 | */ | |
2721 | ||
2722 | static char * | |
2723 | remote_threads_extra_info (struct thread_info *tp) | |
2724 | { | |
d01949b6 | 2725 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2726 | int result; |
2727 | int set; | |
2728 | threadref id; | |
2729 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2730 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2731 | int n = 0; /* position in display_buf */ |
2732 | ||
2733 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2734 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2735 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2736 | |
60e569b9 PA |
2737 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2738 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2739 | /* This is the main thread which was added by GDB. The remote | |
2740 | server doesn't know about it. */ | |
2741 | return NULL; | |
2742 | ||
dc146f7c VP |
2743 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2744 | { | |
2745 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2746 | |
dc146f7c VP |
2747 | if (info && info->private) |
2748 | return info->private->extra; | |
2749 | else | |
2750 | return NULL; | |
2751 | } | |
2752 | ||
9d1f7ab2 MS |
2753 | if (use_threadextra_query) |
2754 | { | |
82f73884 PA |
2755 | char *b = rs->buf; |
2756 | char *endb = rs->buf + get_remote_packet_size (); | |
2757 | ||
2758 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2759 | b += strlen (b); | |
2760 | write_ptid (b, endb, tp->ptid); | |
2761 | ||
2e9f7625 | 2762 | putpkt (rs->buf); |
6d820c5c | 2763 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2764 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2765 | { |
2e9f7625 DJ |
2766 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2767 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2768 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2769 | return display_buf; |
2770 | } | |
0f71a2f6 | 2771 | } |
9d1f7ab2 MS |
2772 | |
2773 | /* If the above query fails, fall back to the old method. */ | |
2774 | use_threadextra_query = 0; | |
2775 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2776 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2777 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2778 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2779 | if (threadinfo.active) | |
0f71a2f6 | 2780 | { |
9d1f7ab2 | 2781 | if (*threadinfo.shortname) |
2bc416ba | 2782 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2783 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2784 | if (*threadinfo.display) |
2bc416ba | 2785 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2786 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2787 | if (*threadinfo.more_display) |
2bc416ba | 2788 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2789 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2790 | |
2791 | if (n > 0) | |
c5aa993b | 2792 | { |
23860348 | 2793 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2794 | if (',' == display_buf[n-1]) |
2795 | display_buf[n-1] = ' '; | |
2796 | return display_buf; | |
c5aa993b | 2797 | } |
0f71a2f6 | 2798 | } |
9d1f7ab2 | 2799 | return NULL; |
0f71a2f6 | 2800 | } |
c906108c | 2801 | \f |
c5aa993b | 2802 | |
0fb4aa4b PA |
2803 | static int |
2804 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2805 | struct static_tracepoint_marker *marker) | |
2806 | { | |
2807 | struct remote_state *rs = get_remote_state (); | |
2808 | char *p = rs->buf; | |
2809 | ||
2810 | sprintf (p, "qTSTMat:"); | |
2811 | p += strlen (p); | |
2812 | p += hexnumstr (p, addr); | |
2813 | putpkt (rs->buf); | |
2814 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2815 | p = rs->buf; | |
2816 | ||
2817 | if (*p == 'E') | |
2818 | error (_("Remote failure reply: %s"), p); | |
2819 | ||
2820 | if (*p++ == 'm') | |
2821 | { | |
2822 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2823 | return 1; | |
2824 | } | |
2825 | ||
2826 | return 0; | |
2827 | } | |
2828 | ||
2829 | static void | |
2830 | free_current_marker (void *arg) | |
2831 | { | |
2832 | struct static_tracepoint_marker **marker_p = arg; | |
2833 | ||
2834 | if (*marker_p != NULL) | |
2835 | { | |
2836 | release_static_tracepoint_marker (*marker_p); | |
2837 | xfree (*marker_p); | |
2838 | } | |
2839 | else | |
2840 | *marker_p = NULL; | |
2841 | } | |
2842 | ||
2843 | static VEC(static_tracepoint_marker_p) * | |
2844 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2845 | { | |
2846 | struct remote_state *rs = get_remote_state (); | |
2847 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2848 | struct static_tracepoint_marker *marker = NULL; | |
2849 | struct cleanup *old_chain; | |
2850 | char *p; | |
2851 | ||
2852 | /* Ask for a first packet of static tracepoint marker | |
2853 | definition. */ | |
2854 | putpkt ("qTfSTM"); | |
2855 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2856 | p = rs->buf; | |
2857 | if (*p == 'E') | |
2858 | error (_("Remote failure reply: %s"), p); | |
2859 | ||
2860 | old_chain = make_cleanup (free_current_marker, &marker); | |
2861 | ||
2862 | while (*p++ == 'm') | |
2863 | { | |
2864 | if (marker == NULL) | |
2865 | marker = XCNEW (struct static_tracepoint_marker); | |
2866 | ||
2867 | do | |
2868 | { | |
2869 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2870 | ||
2871 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2872 | { | |
2873 | VEC_safe_push (static_tracepoint_marker_p, | |
2874 | markers, marker); | |
2875 | marker = NULL; | |
2876 | } | |
2877 | else | |
2878 | { | |
2879 | release_static_tracepoint_marker (marker); | |
2880 | memset (marker, 0, sizeof (*marker)); | |
2881 | } | |
2882 | } | |
2883 | while (*p++ == ','); /* comma-separated list */ | |
2884 | /* Ask for another packet of static tracepoint definition. */ | |
2885 | putpkt ("qTsSTM"); | |
2886 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2887 | p = rs->buf; | |
2888 | } | |
2889 | ||
2890 | do_cleanups (old_chain); | |
2891 | return markers; | |
2892 | } | |
2893 | ||
2894 | \f | |
10760264 JB |
2895 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2896 | ||
2897 | static ptid_t | |
2898 | remote_get_ada_task_ptid (long lwp, long thread) | |
2899 | { | |
2900 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2901 | } | |
2902 | \f | |
2903 | ||
24b06219 | 2904 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2905 | |
2906 | static void | |
fba45db2 | 2907 | extended_remote_restart (void) |
c906108c | 2908 | { |
d01949b6 | 2909 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2910 | |
2911 | /* Send the restart command; for reasons I don't understand the | |
2912 | remote side really expects a number after the "R". */ | |
ea9c271d | 2913 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2914 | putpkt (rs->buf); |
c906108c | 2915 | |
ad9a8f3f | 2916 | remote_fileio_reset (); |
c906108c SS |
2917 | } |
2918 | \f | |
2919 | /* Clean up connection to a remote debugger. */ | |
2920 | ||
c906108c | 2921 | static void |
fba45db2 | 2922 | remote_close (int quitting) |
c906108c | 2923 | { |
d3fd5342 PA |
2924 | if (remote_desc == NULL) |
2925 | return; /* already closed */ | |
2926 | ||
2927 | /* Make sure we leave stdin registered in the event loop, and we | |
2928 | don't leave the async SIGINT signal handler installed. */ | |
2929 | remote_terminal_ours (); | |
ce5ce7ed | 2930 | |
d3fd5342 PA |
2931 | serial_close (remote_desc); |
2932 | remote_desc = NULL; | |
ce5ce7ed PA |
2933 | |
2934 | /* We don't have a connection to the remote stub anymore. Get rid | |
f67fd822 PM |
2935 | of all the inferiors and their threads we were controlling. |
2936 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
2937 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 2938 | inferior_ptid = null_ptid; |
f67fd822 | 2939 | discard_all_inferiors (); |
ce5ce7ed | 2940 | |
74531fed PA |
2941 | /* We're no longer interested in any of these events. */ |
2942 | discard_pending_stop_replies (-1); | |
2943 | ||
2944 | if (remote_async_inferior_event_token) | |
2945 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2946 | if (remote_async_get_pending_events_token) | |
2947 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2948 | } |
2949 | ||
23860348 | 2950 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2951 | |
2952 | static void | |
fba45db2 | 2953 | get_offsets (void) |
c906108c | 2954 | { |
d01949b6 | 2955 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2956 | char *buf; |
085dd6e6 | 2957 | char *ptr; |
31d99776 DJ |
2958 | int lose, num_segments = 0, do_sections, do_segments; |
2959 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2960 | struct section_offsets *offs; |
31d99776 DJ |
2961 | struct symfile_segment_data *data; |
2962 | ||
2963 | if (symfile_objfile == NULL) | |
2964 | return; | |
c906108c SS |
2965 | |
2966 | putpkt ("qOffsets"); | |
6d820c5c | 2967 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2968 | buf = rs->buf; |
c906108c SS |
2969 | |
2970 | if (buf[0] == '\000') | |
2971 | return; /* Return silently. Stub doesn't support | |
23860348 | 2972 | this command. */ |
c906108c SS |
2973 | if (buf[0] == 'E') |
2974 | { | |
8a3fe4f8 | 2975 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2976 | return; |
2977 | } | |
2978 | ||
2979 | /* Pick up each field in turn. This used to be done with scanf, but | |
2980 | scanf will make trouble if CORE_ADDR size doesn't match | |
2981 | conversion directives correctly. The following code will work | |
2982 | with any size of CORE_ADDR. */ | |
2983 | text_addr = data_addr = bss_addr = 0; | |
2984 | ptr = buf; | |
2985 | lose = 0; | |
2986 | ||
2987 | if (strncmp (ptr, "Text=", 5) == 0) | |
2988 | { | |
2989 | ptr += 5; | |
2990 | /* Don't use strtol, could lose on big values. */ | |
2991 | while (*ptr && *ptr != ';') | |
2992 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2993 | |
31d99776 DJ |
2994 | if (strncmp (ptr, ";Data=", 6) == 0) |
2995 | { | |
2996 | ptr += 6; | |
2997 | while (*ptr && *ptr != ';') | |
2998 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2999 | } | |
3000 | else | |
3001 | lose = 1; | |
3002 | ||
3003 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
3004 | { | |
3005 | ptr += 5; | |
3006 | while (*ptr && *ptr != ';') | |
3007 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 3008 | |
31d99776 DJ |
3009 | if (bss_addr != data_addr) |
3010 | warning (_("Target reported unsupported offsets: %s"), buf); | |
3011 | } | |
3012 | else | |
3013 | lose = 1; | |
3014 | } | |
3015 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 3016 | { |
31d99776 DJ |
3017 | ptr += 8; |
3018 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3019 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3020 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3021 | num_segments = 1; | |
3022 | ||
3023 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3024 | { | |
3025 | ptr += 9; | |
3026 | while (*ptr && *ptr != ';') | |
3027 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3028 | num_segments++; | |
3029 | } | |
c906108c SS |
3030 | } |
3031 | else | |
3032 | lose = 1; | |
3033 | ||
3034 | if (lose) | |
8a3fe4f8 | 3035 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3036 | else if (*ptr != '\0') |
3037 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3038 | |
802188a7 | 3039 | offs = ((struct section_offsets *) |
a39a16c4 | 3040 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3041 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3042 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3043 | |
31d99776 DJ |
3044 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3045 | do_segments = (data != NULL); | |
3046 | do_sections = num_segments == 0; | |
c906108c | 3047 | |
28c32713 | 3048 | if (num_segments > 0) |
31d99776 | 3049 | { |
31d99776 DJ |
3050 | segments[0] = text_addr; |
3051 | segments[1] = data_addr; | |
3052 | } | |
28c32713 JB |
3053 | /* If we have two segments, we can still try to relocate everything |
3054 | by assuming that the .text and .data offsets apply to the whole | |
3055 | text and data segments. Convert the offsets given in the packet | |
3056 | to base addresses for symfile_map_offsets_to_segments. */ | |
3057 | else if (data && data->num_segments == 2) | |
3058 | { | |
3059 | segments[0] = data->segment_bases[0] + text_addr; | |
3060 | segments[1] = data->segment_bases[1] + data_addr; | |
3061 | num_segments = 2; | |
3062 | } | |
8d385431 DJ |
3063 | /* If the object file has only one segment, assume that it is text |
3064 | rather than data; main programs with no writable data are rare, | |
3065 | but programs with no code are useless. Of course the code might | |
3066 | have ended up in the data segment... to detect that we would need | |
3067 | the permissions here. */ | |
3068 | else if (data && data->num_segments == 1) | |
3069 | { | |
3070 | segments[0] = data->segment_bases[0] + text_addr; | |
3071 | num_segments = 1; | |
3072 | } | |
28c32713 JB |
3073 | /* There's no way to relocate by segment. */ |
3074 | else | |
3075 | do_segments = 0; | |
31d99776 DJ |
3076 | |
3077 | if (do_segments) | |
3078 | { | |
3079 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3080 | offs, num_segments, segments); | |
3081 | ||
3082 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3083 | error (_("Can not handle qOffsets TextSeg " |
3084 | "response with this symbol file")); | |
31d99776 DJ |
3085 | |
3086 | if (ret > 0) | |
3087 | do_sections = 0; | |
3088 | } | |
c906108c | 3089 | |
9ef895d6 DJ |
3090 | if (data) |
3091 | free_symfile_segment_data (data); | |
31d99776 DJ |
3092 | |
3093 | if (do_sections) | |
3094 | { | |
3095 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3096 | ||
3e43a32a MS |
3097 | /* This is a temporary kludge to force data and bss to use the |
3098 | same offsets because that's what nlmconv does now. The real | |
3099 | solution requires changes to the stub and remote.c that I | |
3100 | don't have time to do right now. */ | |
31d99776 DJ |
3101 | |
3102 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3103 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3104 | } | |
c906108c SS |
3105 | |
3106 | objfile_relocate (symfile_objfile, offs); | |
3107 | } | |
3108 | ||
74531fed PA |
3109 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3110 | threads we know are stopped already. This is used during the | |
3111 | initial remote connection in non-stop mode --- threads that are | |
3112 | reported as already being stopped are left stopped. */ | |
3113 | ||
3114 | static int | |
3115 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3116 | { | |
3117 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3118 | if (peek_stop_reply (thread->ptid)) | |
3119 | set_stop_requested (thread->ptid, 1); | |
3120 | ||
3121 | return 0; | |
3122 | } | |
3123 | ||
9a7071a8 JB |
3124 | /* Send interrupt_sequence to remote target. */ |
3125 | static void | |
eeae04df | 3126 | send_interrupt_sequence (void) |
9a7071a8 JB |
3127 | { |
3128 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3129 | serial_write (remote_desc, "\x03", 1); | |
3130 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3131 | serial_send_break (remote_desc); | |
3132 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3133 | { | |
3134 | serial_send_break (remote_desc); | |
3135 | serial_write (remote_desc, "g", 1); | |
3136 | } | |
3137 | else | |
3138 | internal_error (__FILE__, __LINE__, | |
3139 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3140 | interrupt_sequence_mode); | |
3141 | } | |
3142 | ||
9cbc821d | 3143 | static void |
04bd08de | 3144 | remote_start_remote (int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3145 | { |
c8d104ad PA |
3146 | struct remote_state *rs = get_remote_state (); |
3147 | struct packet_config *noack_config; | |
2d717e4f | 3148 | char *wait_status = NULL; |
8621d6a9 | 3149 | |
23860348 | 3150 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3151 | |
9a7071a8 JB |
3152 | if (interrupt_on_connect) |
3153 | send_interrupt_sequence (); | |
3154 | ||
57e12211 TT |
3155 | /* Ack any packet which the remote side has already sent. */ |
3156 | serial_write (remote_desc, "+", 1); | |
3157 | ||
c8d104ad PA |
3158 | /* The first packet we send to the target is the optional "supported |
3159 | packets" request. If the target can answer this, it will tell us | |
3160 | which later probes to skip. */ | |
3161 | remote_query_supported (); | |
3162 | ||
d914c394 SS |
3163 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3164 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3165 | remote_set_permissions (); | |
3166 | ||
c8d104ad PA |
3167 | /* Next, we possibly activate noack mode. |
3168 | ||
3169 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3170 | enable noack mode if the stub reported a wish for it with | |
3171 | qSupported. | |
3172 | ||
3173 | If set to TRUE, then enable noack mode even if the stub didn't | |
3174 | report it in qSupported. If the stub doesn't reply OK, the | |
3175 | session ends with an error. | |
3176 | ||
3177 | If FALSE, then don't activate noack mode, regardless of what the | |
3178 | stub claimed should be the default with qSupported. */ | |
3179 | ||
3180 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3181 | ||
3182 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3183 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3184 | && noack_config->support == PACKET_ENABLE)) | |
3185 | { | |
3186 | putpkt ("QStartNoAckMode"); | |
3187 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3188 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3189 | rs->noack_mode = 1; | |
3190 | } | |
3191 | ||
04bd08de | 3192 | if (extended_p) |
5fe04517 PA |
3193 | { |
3194 | /* Tell the remote that we are using the extended protocol. */ | |
3195 | putpkt ("!"); | |
3196 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3197 | } | |
3198 | ||
d962ef82 DJ |
3199 | /* Next, if the target can specify a description, read it. We do |
3200 | this before anything involving memory or registers. */ | |
3201 | target_find_description (); | |
3202 | ||
6c95b8df PA |
3203 | /* Next, now that we know something about the target, update the |
3204 | address spaces in the program spaces. */ | |
3205 | update_address_spaces (); | |
3206 | ||
50c71eaf PA |
3207 | /* On OSs where the list of libraries is global to all |
3208 | processes, we fetch them early. */ | |
3209 | if (gdbarch_has_global_solist (target_gdbarch)) | |
04bd08de | 3210 | solib_add (NULL, from_tty, target, auto_solib_add); |
50c71eaf | 3211 | |
74531fed PA |
3212 | if (non_stop) |
3213 | { | |
3214 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3215 | error (_("Non-stop mode requested, but remote " |
3216 | "does not support non-stop")); | |
74531fed PA |
3217 | |
3218 | putpkt ("QNonStop:1"); | |
3219 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3220 | ||
3221 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3222 | error (_("Remote refused setting non-stop mode with: %s"), rs->buf); |
74531fed PA |
3223 | |
3224 | /* Find about threads and processes the stub is already | |
3225 | controlling. We default to adding them in the running state. | |
3226 | The '?' query below will then tell us about which threads are | |
3227 | stopped. */ | |
04bd08de | 3228 | remote_threads_info (target); |
74531fed PA |
3229 | } |
3230 | else if (rs->non_stop_aware) | |
3231 | { | |
3232 | /* Don't assume that the stub can operate in all-stop mode. | |
3233 | Request it explicitely. */ | |
3234 | putpkt ("QNonStop:0"); | |
3235 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3236 | ||
3237 | if (strcmp (rs->buf, "OK") != 0) | |
9b20d036 | 3238 | error (_("Remote refused setting all-stop mode with: %s"), rs->buf); |
74531fed PA |
3239 | } |
3240 | ||
2d717e4f DJ |
3241 | /* Check whether the target is running now. */ |
3242 | putpkt ("?"); | |
3243 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3244 | ||
74531fed | 3245 | if (!non_stop) |
2d717e4f | 3246 | { |
74531fed | 3247 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3248 | { |
04bd08de | 3249 | if (!extended_p) |
74531fed | 3250 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3251 | |
3252 | /* We're connected, but not running. Drop out before we | |
3253 | call start_remote. */ | |
3254 | return; | |
2d717e4f DJ |
3255 | } |
3256 | else | |
74531fed | 3257 | { |
74531fed PA |
3258 | /* Save the reply for later. */ |
3259 | wait_status = alloca (strlen (rs->buf) + 1); | |
3260 | strcpy (wait_status, rs->buf); | |
3261 | } | |
3262 | ||
3263 | /* Let the stub know that we want it to return the thread. */ | |
3264 | set_continue_thread (minus_one_ptid); | |
3265 | ||
3266 | /* Without this, some commands which require an active target | |
3267 | (such as kill) won't work. This variable serves (at least) | |
3268 | double duty as both the pid of the target process (if it has | |
3269 | such), and as a flag indicating that a target is active. | |
3270 | These functions should be split out into seperate variables, | |
3271 | especially since GDB will someday have a notion of debugging | |
3272 | several processes. */ | |
3273 | inferior_ptid = magic_null_ptid; | |
3274 | ||
3275 | /* Now, if we have thread information, update inferior_ptid. */ | |
3276 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3277 | ||
0b16c5cf | 3278 | remote_add_inferior (ptid_get_pid (inferior_ptid), -1); |
74531fed PA |
3279 | |
3280 | /* Always add the main thread. */ | |
3281 | add_thread_silent (inferior_ptid); | |
3282 | ||
6e586cc5 YQ |
3283 | /* init_wait_for_inferior should be called before get_offsets in order |
3284 | to manage `inserted' flag in bp loc in a correct state. | |
3285 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
3286 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
3287 | start_remote, set `inserted' flag to 1. In the initialization of | |
3288 | inferior, breakpoint_init_inferior should be called first, and then | |
3289 | breakpoint_re_set can be called. If this order is broken, state of | |
3290 | `inserted' flag is wrong, and cause some problems on breakpoint | |
3291 | manipulation. */ | |
3292 | init_wait_for_inferior (); | |
3293 | ||
74531fed PA |
3294 | get_offsets (); /* Get text, data & bss offsets. */ |
3295 | ||
d962ef82 DJ |
3296 | /* If we could not find a description using qXfer, and we know |
3297 | how to do it some other way, try again. This is not | |
3298 | supported for non-stop; it could be, but it is tricky if | |
3299 | there are no stopped threads when we connect. */ | |
04bd08de | 3300 | if (remote_read_description_p (target) |
d962ef82 DJ |
3301 | && gdbarch_target_desc (target_gdbarch) == NULL) |
3302 | { | |
3303 | target_clear_description (); | |
3304 | target_find_description (); | |
3305 | } | |
3306 | ||
74531fed PA |
3307 | /* Use the previously fetched status. */ |
3308 | gdb_assert (wait_status != NULL); | |
3309 | strcpy (rs->buf, wait_status); | |
3310 | rs->cached_wait_status = 1; | |
3311 | ||
3312 | immediate_quit--; | |
04bd08de | 3313 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
3314 | } |
3315 | else | |
3316 | { | |
68c97600 PA |
3317 | /* Clear WFI global state. Do this before finding about new |
3318 | threads and inferiors, and setting the current inferior. | |
3319 | Otherwise we would clear the proceed status of the current | |
3320 | inferior when we want its stop_soon state to be preserved | |
3321 | (see notice_new_inferior). */ | |
3322 | init_wait_for_inferior (); | |
3323 | ||
74531fed PA |
3324 | /* In non-stop, we will either get an "OK", meaning that there |
3325 | are no stopped threads at this time; or, a regular stop | |
3326 | reply. In the latter case, there may be more than one thread | |
3327 | stopped --- we pull them all out using the vStopped | |
3328 | mechanism. */ | |
3329 | if (strcmp (rs->buf, "OK") != 0) | |
3330 | { | |
3331 | struct stop_reply *stop_reply; | |
3332 | struct cleanup *old_chain; | |
2d717e4f | 3333 | |
74531fed PA |
3334 | stop_reply = stop_reply_xmalloc (); |
3335 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3336 | |
74531fed PA |
3337 | remote_parse_stop_reply (rs->buf, stop_reply); |
3338 | discard_cleanups (old_chain); | |
c0a2216e | 3339 | |
74531fed PA |
3340 | /* get_pending_stop_replies acks this one, and gets the rest |
3341 | out. */ | |
3342 | pending_stop_reply = stop_reply; | |
3343 | remote_get_pending_stop_replies (); | |
c906108c | 3344 | |
74531fed PA |
3345 | /* Make sure that threads that were stopped remain |
3346 | stopped. */ | |
3347 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3348 | } | |
2d717e4f | 3349 | |
74531fed PA |
3350 | if (target_can_async_p ()) |
3351 | target_async (inferior_event_handler, 0); | |
c906108c | 3352 | |
74531fed PA |
3353 | if (thread_count () == 0) |
3354 | { | |
04bd08de | 3355 | if (!extended_p) |
74531fed | 3356 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3357 | |
c35b1492 PA |
3358 | /* We're connected, but not running. Drop out before we |
3359 | call start_remote. */ | |
3360 | return; | |
3361 | } | |
74531fed PA |
3362 | |
3363 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3364 | |
74531fed PA |
3365 | /* Force the stub to choose a thread. */ |
3366 | set_general_thread (null_ptid); | |
c906108c | 3367 | |
74531fed PA |
3368 | /* Query it. */ |
3369 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3370 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3371 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3372 | |
74531fed PA |
3373 | get_offsets (); /* Get text, data & bss offsets. */ |
3374 | ||
3375 | /* In non-stop mode, any cached wait status will be stored in | |
3376 | the stop reply queue. */ | |
3377 | gdb_assert (wait_status == NULL); | |
f0223081 | 3378 | |
2455069d UW |
3379 | /* Report all signals during attach/startup. */ |
3380 | remote_pass_signals (0, NULL); | |
74531fed | 3381 | } |
c8d104ad | 3382 | |
c8d104ad PA |
3383 | /* If we connected to a live target, do some additional setup. */ |
3384 | if (target_has_execution) | |
3385 | { | |
3386 | if (exec_bfd) /* No use without an exec file. */ | |
3387 | remote_check_symbols (symfile_objfile); | |
3388 | } | |
50c71eaf | 3389 | |
d5551862 SS |
3390 | /* Possibly the target has been engaged in a trace run started |
3391 | previously; find out where things are at. */ | |
26afc0d7 | 3392 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3393 | { |
00bf0b85 SS |
3394 | struct uploaded_tp *uploaded_tps = NULL; |
3395 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3396 | ||
00bf0b85 SS |
3397 | if (current_trace_status ()->running) |
3398 | printf_filtered (_("Trace is already running on the target.\n")); | |
3399 | ||
3400 | /* Get trace state variables first, they may be checked when | |
3401 | parsing uploaded commands. */ | |
3402 | ||
3403 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3404 | ||
3405 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3406 | ||
3407 | remote_upload_tracepoints (&uploaded_tps); | |
3408 | ||
3409 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3410 | } |
3411 | ||
2567c7d9 PA |
3412 | /* If breakpoints are global, insert them now. */ |
3413 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3414 | && breakpoints_always_inserted_mode ()) |
3415 | insert_breakpoints (); | |
c906108c SS |
3416 | } |
3417 | ||
3418 | /* Open a connection to a remote debugger. | |
3419 | NAME is the filename used for communication. */ | |
3420 | ||
3421 | static void | |
fba45db2 | 3422 | remote_open (char *name, int from_tty) |
c906108c | 3423 | { |
75c99385 | 3424 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3425 | } |
3426 | ||
c906108c SS |
3427 | /* Open a connection to a remote debugger using the extended |
3428 | remote gdb protocol. NAME is the filename used for communication. */ | |
3429 | ||
3430 | static void | |
fba45db2 | 3431 | extended_remote_open (char *name, int from_tty) |
c906108c | 3432 | { |
75c99385 | 3433 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3434 | } |
3435 | ||
c906108c SS |
3436 | /* Generic code for opening a connection to a remote target. */ |
3437 | ||
d471ea57 AC |
3438 | static void |
3439 | init_all_packet_configs (void) | |
3440 | { | |
3441 | int i; | |
a744cf53 | 3442 | |
444abaca DJ |
3443 | for (i = 0; i < PACKET_MAX; i++) |
3444 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3445 | } |
3446 | ||
23860348 | 3447 | /* Symbol look-up. */ |
dc8acb97 MS |
3448 | |
3449 | static void | |
3450 | remote_check_symbols (struct objfile *objfile) | |
3451 | { | |
d01949b6 | 3452 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3453 | char *msg, *reply, *tmp; |
3454 | struct minimal_symbol *sym; | |
3455 | int end; | |
3456 | ||
63154eca PA |
3457 | /* The remote side has no concept of inferiors that aren't running |
3458 | yet, it only knows about running processes. If we're connected | |
3459 | but our current inferior is not running, we should not invite the | |
3460 | remote target to request symbol lookups related to its | |
3461 | (unrelated) current process. */ | |
3462 | if (!target_has_execution) | |
3463 | return; | |
3464 | ||
444abaca | 3465 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3466 | return; |
3467 | ||
63154eca PA |
3468 | /* Make sure the remote is pointing at the right process. Note |
3469 | there's no way to select "no process". */ | |
3c9c4b83 PA |
3470 | set_general_process (); |
3471 | ||
6d820c5c DJ |
3472 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3473 | because we need both at the same time. */ | |
ea9c271d | 3474 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3475 | |
23860348 | 3476 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3477 | |
3478 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3479 | getpkt (&rs->buf, &rs->buf_size, 0); |
3480 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3481 | reply = rs->buf; |
dc8acb97 MS |
3482 | |
3483 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3484 | { | |
3485 | tmp = &reply[8]; | |
cfd77fa1 | 3486 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3487 | msg[end] = '\0'; |
3488 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3489 | if (sym == NULL) | |
ea9c271d | 3490 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3491 | else |
2bbe3cc1 | 3492 | { |
5af949e3 | 3493 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3494 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3495 | ||
3496 | /* If this is a function address, return the start of code | |
3497 | instead of any data function descriptor. */ | |
1cf3db46 | 3498 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3499 | sym_addr, |
3500 | ¤t_target); | |
3501 | ||
3502 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3503 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3504 | } |
3505 | ||
dc8acb97 | 3506 | putpkt (msg); |
6d820c5c | 3507 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3508 | reply = rs->buf; |
dc8acb97 MS |
3509 | } |
3510 | } | |
3511 | ||
9db8d71f DJ |
3512 | static struct serial * |
3513 | remote_serial_open (char *name) | |
3514 | { | |
3515 | static int udp_warning = 0; | |
3516 | ||
3517 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3518 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3519 | serial connection is reliable and not the serial connection promising | |
3520 | to be. */ | |
3521 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3522 | { | |
3e43a32a MS |
3523 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3524 | "Some events may be lost, rendering further debugging " | |
3525 | "impossible.")); | |
9db8d71f DJ |
3526 | udp_warning = 1; |
3527 | } | |
3528 | ||
3529 | return serial_open (name); | |
3530 | } | |
3531 | ||
d914c394 SS |
3532 | /* Inform the target of our permission settings. The permission flags |
3533 | work without this, but if the target knows the settings, it can do | |
3534 | a couple things. First, it can add its own check, to catch cases | |
3535 | that somehow manage to get by the permissions checks in target | |
3536 | methods. Second, if the target is wired to disallow particular | |
3537 | settings (for instance, a system in the field that is not set up to | |
3538 | be able to stop at a breakpoint), it can object to any unavailable | |
3539 | permissions. */ | |
3540 | ||
3541 | void | |
3542 | remote_set_permissions (void) | |
3543 | { | |
3544 | struct remote_state *rs = get_remote_state (); | |
3545 | ||
3546 | sprintf (rs->buf, "QAllow:" | |
3547 | "WriteReg:%x;WriteMem:%x;" | |
3548 | "InsertBreak:%x;InsertTrace:%x;" | |
3549 | "InsertFastTrace:%x;Stop:%x", | |
3550 | may_write_registers, may_write_memory, | |
3551 | may_insert_breakpoints, may_insert_tracepoints, | |
3552 | may_insert_fast_tracepoints, may_stop); | |
3553 | putpkt (rs->buf); | |
3554 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3555 | ||
3556 | /* If the target didn't like the packet, warn the user. Do not try | |
3557 | to undo the user's settings, that would just be maddening. */ | |
3558 | if (strcmp (rs->buf, "OK") != 0) | |
7ea6d463 | 3559 | warning (_("Remote refused setting permissions with: %s"), rs->buf); |
d914c394 SS |
3560 | } |
3561 | ||
be2a5f71 DJ |
3562 | /* This type describes each known response to the qSupported |
3563 | packet. */ | |
3564 | struct protocol_feature | |
3565 | { | |
3566 | /* The name of this protocol feature. */ | |
3567 | const char *name; | |
3568 | ||
3569 | /* The default for this protocol feature. */ | |
3570 | enum packet_support default_support; | |
3571 | ||
3572 | /* The function to call when this feature is reported, or after | |
3573 | qSupported processing if the feature is not supported. | |
3574 | The first argument points to this structure. The second | |
3575 | argument indicates whether the packet requested support be | |
3576 | enabled, disabled, or probed (or the default, if this function | |
3577 | is being called at the end of processing and this feature was | |
3578 | not reported). The third argument may be NULL; if not NULL, it | |
3579 | is a NUL-terminated string taken from the packet following | |
3580 | this feature's name and an equals sign. */ | |
3581 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3582 | const char *); | |
3583 | ||
3584 | /* The corresponding packet for this feature. Only used if | |
3585 | FUNC is remote_supported_packet. */ | |
3586 | int packet; | |
3587 | }; | |
3588 | ||
be2a5f71 DJ |
3589 | static void |
3590 | remote_supported_packet (const struct protocol_feature *feature, | |
3591 | enum packet_support support, | |
3592 | const char *argument) | |
3593 | { | |
3594 | if (argument) | |
3595 | { | |
3596 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3597 | " \"%s\"."), feature->name); | |
3598 | return; | |
3599 | } | |
3600 | ||
3601 | if (remote_protocol_packets[feature->packet].support | |
3602 | == PACKET_SUPPORT_UNKNOWN) | |
3603 | remote_protocol_packets[feature->packet].support = support; | |
3604 | } | |
be2a5f71 DJ |
3605 | |
3606 | static void | |
3607 | remote_packet_size (const struct protocol_feature *feature, | |
3608 | enum packet_support support, const char *value) | |
3609 | { | |
3610 | struct remote_state *rs = get_remote_state (); | |
3611 | ||
3612 | int packet_size; | |
3613 | char *value_end; | |
3614 | ||
3615 | if (support != PACKET_ENABLE) | |
3616 | return; | |
3617 | ||
3618 | if (value == NULL || *value == '\0') | |
3619 | { | |
3620 | warning (_("Remote target reported \"%s\" without a size."), | |
3621 | feature->name); | |
3622 | return; | |
3623 | } | |
3624 | ||
3625 | errno = 0; | |
3626 | packet_size = strtol (value, &value_end, 16); | |
3627 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3628 | { | |
3629 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3630 | feature->name, value); | |
3631 | return; | |
3632 | } | |
3633 | ||
3634 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3635 | { | |
3636 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3637 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3638 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3639 | } | |
3640 | ||
3641 | /* Record the new maximum packet size. */ | |
3642 | rs->explicit_packet_size = packet_size; | |
3643 | } | |
3644 | ||
82f73884 PA |
3645 | static void |
3646 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3647 | enum packet_support support, const char *value) | |
3648 | { | |
3649 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3650 | |
82f73884 PA |
3651 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3652 | } | |
3653 | ||
74531fed PA |
3654 | static void |
3655 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3656 | enum packet_support support, const char *value) | |
3657 | { | |
3658 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3659 | |
74531fed PA |
3660 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3661 | } | |
3662 | ||
782b2b07 SS |
3663 | static void |
3664 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3665 | enum packet_support support, | |
3666 | const char *value) | |
3667 | { | |
3668 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3669 | |
782b2b07 SS |
3670 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3671 | } | |
3672 | ||
7a697b8d SS |
3673 | static void |
3674 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3675 | enum packet_support support, | |
3676 | const char *value) | |
3677 | { | |
3678 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3679 | |
7a697b8d SS |
3680 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3681 | } | |
3682 | ||
0fb4aa4b PA |
3683 | static void |
3684 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3685 | enum packet_support support, | |
3686 | const char *value) | |
3687 | { | |
3688 | struct remote_state *rs = get_remote_state (); | |
3689 | ||
3690 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3691 | } | |
3692 | ||
d5551862 SS |
3693 | static void |
3694 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3695 | enum packet_support support, | |
3696 | const char *value) | |
3697 | { | |
3698 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3699 | |
d5551862 SS |
3700 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3701 | } | |
3702 | ||
d248b706 KY |
3703 | static void |
3704 | remote_enable_disable_tracepoint_feature (const struct protocol_feature *feature, | |
3705 | enum packet_support support, | |
3706 | const char *value) | |
3707 | { | |
3708 | struct remote_state *rs = get_remote_state (); | |
3709 | ||
3710 | rs->enable_disable_tracepoints = (support == PACKET_ENABLE); | |
3711 | } | |
3712 | ||
be2a5f71 | 3713 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3714 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3715 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3716 | PACKET_qXfer_auxv }, |
23181151 DJ |
3717 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3718 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3719 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3720 | PACKET_qXfer_libraries }, | |
fd79ecee | 3721 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3722 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3723 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3724 | PACKET_qXfer_spu_read }, | |
3725 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3726 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3727 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3728 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3729 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3730 | PACKET_qXfer_threads }, | |
b3b9301e PA |
3731 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
3732 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
3733 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3734 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3735 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3736 | PACKET_QStartNoAckMode }, | |
82f73884 | 3737 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3738 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3739 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3740 | PACKET_qXfer_siginfo_read }, | |
3741 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3742 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3743 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3744 | PACKET_ConditionalTracepoints }, | |
7a697b8d SS |
3745 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3746 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3747 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3748 | PACKET_StaticTracepoints }, | |
d5551862 SS |
3749 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3750 | -1 }, | |
40ab02ce MS |
3751 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3752 | PACKET_bc }, | |
3753 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3754 | PACKET_bs }, | |
409873ef SS |
3755 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3756 | PACKET_TracepointSource }, | |
d914c394 SS |
3757 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3758 | PACKET_QAllow }, | |
d248b706 KY |
3759 | { "EnableDisableTracepoints", PACKET_DISABLE, |
3760 | remote_enable_disable_tracepoint_feature, -1 }, | |
be2a5f71 DJ |
3761 | }; |
3762 | ||
c8d5aac9 L |
3763 | static char *remote_support_xml; |
3764 | ||
3765 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3766 | ||
3767 | void | |
6e39997a | 3768 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3769 | { |
3770 | #if defined(HAVE_LIBEXPAT) | |
3771 | if (remote_support_xml == NULL) | |
c4f7c687 | 3772 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3773 | else |
3774 | { | |
3775 | char *copy = xstrdup (remote_support_xml + 13); | |
3776 | char *p = strtok (copy, ","); | |
3777 | ||
3778 | do | |
3779 | { | |
3780 | if (strcmp (p, xml) == 0) | |
3781 | { | |
3782 | /* already there */ | |
3783 | xfree (copy); | |
3784 | return; | |
3785 | } | |
3786 | } | |
3787 | while ((p = strtok (NULL, ",")) != NULL); | |
3788 | xfree (copy); | |
3789 | ||
94b0dee1 PA |
3790 | remote_support_xml = reconcat (remote_support_xml, |
3791 | remote_support_xml, ",", xml, | |
3792 | (char *) NULL); | |
c8d5aac9 L |
3793 | } |
3794 | #endif | |
3795 | } | |
3796 | ||
3797 | static char * | |
3798 | remote_query_supported_append (char *msg, const char *append) | |
3799 | { | |
3800 | if (msg) | |
94b0dee1 | 3801 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3802 | else |
3803 | return xstrdup (append); | |
3804 | } | |
3805 | ||
be2a5f71 DJ |
3806 | static void |
3807 | remote_query_supported (void) | |
3808 | { | |
3809 | struct remote_state *rs = get_remote_state (); | |
3810 | char *next; | |
3811 | int i; | |
3812 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3813 | ||
3814 | /* The packet support flags are handled differently for this packet | |
3815 | than for most others. We treat an error, a disabled packet, and | |
3816 | an empty response identically: any features which must be reported | |
3817 | to be used will be automatically disabled. An empty buffer | |
3818 | accomplishes this, since that is also the representation for a list | |
3819 | containing no features. */ | |
3820 | ||
3821 | rs->buf[0] = 0; | |
3822 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3823 | { | |
c8d5aac9 | 3824 | char *q = NULL; |
94b0dee1 | 3825 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 L |
3826 | |
3827 | if (rs->extended) | |
3828 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 L |
3829 | |
3830 | if (remote_support_xml) | |
3831 | q = remote_query_supported_append (q, remote_support_xml); | |
3832 | ||
dde08ee1 PA |
3833 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3834 | ||
3835 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3836 | putpkt (q); | |
82f73884 | 3837 | |
94b0dee1 PA |
3838 | do_cleanups (old_chain); |
3839 | ||
be2a5f71 DJ |
3840 | getpkt (&rs->buf, &rs->buf_size, 0); |
3841 | ||
3842 | /* If an error occured, warn, but do not return - just reset the | |
3843 | buffer to empty and go on to disable features. */ | |
3844 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3845 | == PACKET_ERROR) | |
3846 | { | |
3847 | warning (_("Remote failure reply: %s"), rs->buf); | |
3848 | rs->buf[0] = 0; | |
3849 | } | |
3850 | } | |
3851 | ||
3852 | memset (seen, 0, sizeof (seen)); | |
3853 | ||
3854 | next = rs->buf; | |
3855 | while (*next) | |
3856 | { | |
3857 | enum packet_support is_supported; | |
3858 | char *p, *end, *name_end, *value; | |
3859 | ||
3860 | /* First separate out this item from the rest of the packet. If | |
3861 | there's another item after this, we overwrite the separator | |
3862 | (terminated strings are much easier to work with). */ | |
3863 | p = next; | |
3864 | end = strchr (p, ';'); | |
3865 | if (end == NULL) | |
3866 | { | |
3867 | end = p + strlen (p); | |
3868 | next = end; | |
3869 | } | |
3870 | else | |
3871 | { | |
89be2091 DJ |
3872 | *end = '\0'; |
3873 | next = end + 1; | |
3874 | ||
be2a5f71 DJ |
3875 | if (end == p) |
3876 | { | |
3877 | warning (_("empty item in \"qSupported\" response")); | |
3878 | continue; | |
3879 | } | |
be2a5f71 DJ |
3880 | } |
3881 | ||
3882 | name_end = strchr (p, '='); | |
3883 | if (name_end) | |
3884 | { | |
3885 | /* This is a name=value entry. */ | |
3886 | is_supported = PACKET_ENABLE; | |
3887 | value = name_end + 1; | |
3888 | *name_end = '\0'; | |
3889 | } | |
3890 | else | |
3891 | { | |
3892 | value = NULL; | |
3893 | switch (end[-1]) | |
3894 | { | |
3895 | case '+': | |
3896 | is_supported = PACKET_ENABLE; | |
3897 | break; | |
3898 | ||
3899 | case '-': | |
3900 | is_supported = PACKET_DISABLE; | |
3901 | break; | |
3902 | ||
3903 | case '?': | |
3904 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3905 | break; | |
3906 | ||
3907 | default: | |
3e43a32a MS |
3908 | warning (_("unrecognized item \"%s\" " |
3909 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
3910 | continue; |
3911 | } | |
3912 | end[-1] = '\0'; | |
3913 | } | |
3914 | ||
3915 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3916 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
3917 | { | |
3918 | const struct protocol_feature *feature; | |
3919 | ||
3920 | seen[i] = 1; | |
3921 | feature = &remote_protocol_features[i]; | |
3922 | feature->func (feature, is_supported, value); | |
3923 | break; | |
3924 | } | |
3925 | } | |
3926 | ||
3927 | /* If we increased the packet size, make sure to increase the global | |
3928 | buffer size also. We delay this until after parsing the entire | |
3929 | qSupported packet, because this is the same buffer we were | |
3930 | parsing. */ | |
3931 | if (rs->buf_size < rs->explicit_packet_size) | |
3932 | { | |
3933 | rs->buf_size = rs->explicit_packet_size; | |
3934 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
3935 | } | |
3936 | ||
3937 | /* Handle the defaults for unmentioned features. */ | |
3938 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3939 | if (!seen[i]) | |
3940 | { | |
3941 | const struct protocol_feature *feature; | |
3942 | ||
3943 | feature = &remote_protocol_features[i]; | |
3944 | feature->func (feature, feature->default_support, NULL); | |
3945 | } | |
3946 | } | |
3947 | ||
3948 | ||
c906108c | 3949 | static void |
3e43a32a MS |
3950 | remote_open_1 (char *name, int from_tty, |
3951 | struct target_ops *target, int extended_p) | |
c906108c | 3952 | { |
d01949b6 | 3953 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 3954 | |
c906108c | 3955 | if (name == 0) |
8a3fe4f8 | 3956 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 3957 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 3958 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 3959 | |
23860348 | 3960 | /* See FIXME above. */ |
c6ebd6cf | 3961 | if (!target_async_permitted) |
92d1e331 | 3962 | wait_forever_enabled_p = 1; |
6426a772 | 3963 | |
2d717e4f DJ |
3964 | /* If we're connected to a running target, target_preopen will kill it. |
3965 | But if we're connected to a target system with no running process, | |
3966 | then we will still be connected when it returns. Ask this question | |
3967 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 3968 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3969 | { |
3970 | if (!from_tty | |
3971 | || query (_("Already connected to a remote target. Disconnect? "))) | |
3972 | pop_target (); | |
3973 | else | |
3974 | error (_("Still connected.")); | |
3975 | } | |
3976 | ||
c906108c SS |
3977 | target_preopen (from_tty); |
3978 | ||
3979 | unpush_target (target); | |
3980 | ||
2d717e4f DJ |
3981 | /* This time without a query. If we were connected to an |
3982 | extended-remote target and target_preopen killed the running | |
3983 | process, we may still be connected. If we are starting "target | |
3984 | remote" now, the extended-remote target will not have been | |
3985 | removed by unpush_target. */ | |
c35b1492 | 3986 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3987 | pop_target (); |
3988 | ||
89be2091 DJ |
3989 | /* Make sure we send the passed signals list the next time we resume. */ |
3990 | xfree (last_pass_packet); | |
3991 | last_pass_packet = NULL; | |
3992 | ||
ad9a8f3f | 3993 | remote_fileio_reset (); |
1dd41f16 NS |
3994 | reopen_exec_file (); |
3995 | reread_symbols (); | |
3996 | ||
9db8d71f | 3997 | remote_desc = remote_serial_open (name); |
c906108c SS |
3998 | if (!remote_desc) |
3999 | perror_with_name (name); | |
4000 | ||
4001 | if (baud_rate != -1) | |
4002 | { | |
2cd58942 | 4003 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 4004 | { |
9b74d5d3 KB |
4005 | /* The requested speed could not be set. Error out to |
4006 | top level after closing remote_desc. Take care to | |
4007 | set remote_desc to NULL to avoid closing remote_desc | |
4008 | more than once. */ | |
2cd58942 | 4009 | serial_close (remote_desc); |
9b74d5d3 | 4010 | remote_desc = NULL; |
c906108c SS |
4011 | perror_with_name (name); |
4012 | } | |
4013 | } | |
4014 | ||
2cd58942 | 4015 | serial_raw (remote_desc); |
c906108c SS |
4016 | |
4017 | /* If there is something sitting in the buffer we might take it as a | |
4018 | response to a command, which would be bad. */ | |
2cd58942 | 4019 | serial_flush_input (remote_desc); |
c906108c SS |
4020 | |
4021 | if (from_tty) | |
4022 | { | |
4023 | puts_filtered ("Remote debugging using "); | |
4024 | puts_filtered (name); | |
4025 | puts_filtered ("\n"); | |
4026 | } | |
23860348 | 4027 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 4028 | |
74531fed PA |
4029 | /* Register extra event sources in the event loop. */ |
4030 | remote_async_inferior_event_token | |
4031 | = create_async_event_handler (remote_async_inferior_event_handler, | |
4032 | NULL); | |
4033 | remote_async_get_pending_events_token | |
4034 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
4035 | NULL); | |
4036 | ||
be2a5f71 DJ |
4037 | /* Reset the target state; these things will be queried either by |
4038 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4039 | init_all_packet_configs (); |
74531fed | 4040 | rs->cached_wait_status = 0; |
be2a5f71 | 4041 | rs->explicit_packet_size = 0; |
a6f3e723 | 4042 | rs->noack_mode = 0; |
82f73884 PA |
4043 | rs->multi_process_aware = 0; |
4044 | rs->extended = extended_p; | |
74531fed | 4045 | rs->non_stop_aware = 0; |
e24a49d8 | 4046 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4047 | rs->ctrlc_pending_p = 0; |
802188a7 | 4048 | |
79d7f229 PA |
4049 | general_thread = not_sent_ptid; |
4050 | continue_thread = not_sent_ptid; | |
e6e4e701 | 4051 | remote_traceframe_number = -1; |
c906108c | 4052 | |
9d1f7ab2 MS |
4053 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4054 | use_threadinfo_query = 1; | |
4055 | use_threadextra_query = 1; | |
4056 | ||
c6ebd6cf | 4057 | if (target_async_permitted) |
92d1e331 | 4058 | { |
23860348 | 4059 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4060 | remote_async_terminal_ours_p = 1; |
4061 | ||
4062 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4063 | assumed that the target is already ready and able to respond to | |
0df8b418 | 4064 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 4065 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 4066 | around this. Eventually a mechanism that allows |
92d1e331 | 4067 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 4068 | implemented. */ |
92d1e331 DJ |
4069 | wait_forever_enabled_p = 0; |
4070 | } | |
4071 | ||
23860348 | 4072 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4073 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4074 | |
74531fed PA |
4075 | /* Start afresh. */ |
4076 | init_thread_list (); | |
4077 | ||
36918e70 | 4078 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4079 | target (we'd otherwise be in an inconsistent state) and then |
4080 | propogate the error on up the exception chain. This ensures that | |
4081 | the caller doesn't stumble along blindly assuming that the | |
4082 | function succeeded. The CLI doesn't have this problem but other | |
4083 | UI's, such as MI do. | |
36918e70 AC |
4084 | |
4085 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4086 | this function should return an error indication letting the | |
ce2826aa | 4087 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4088 | ``target remote'' is directly wired to this function making that |
4089 | impossible. On a positive note, the CLI side of this problem has | |
4090 | been fixed - the function set_cmd_context() makes it possible for | |
4091 | all the ``target ....'' commands to share a common callback | |
4092 | function. See cli-dump.c. */ | |
109c3e39 | 4093 | { |
04bd08de | 4094 | volatile struct gdb_exception ex; |
2d717e4f | 4095 | |
04bd08de TT |
4096 | TRY_CATCH (ex, RETURN_MASK_ALL) |
4097 | { | |
4098 | remote_start_remote (from_tty, target, extended_p); | |
4099 | } | |
109c3e39 AC |
4100 | if (ex.reason < 0) |
4101 | { | |
c8d104ad PA |
4102 | /* Pop the partially set up target - unless something else did |
4103 | already before throwing the exception. */ | |
4104 | if (remote_desc != NULL) | |
4105 | pop_target (); | |
c6ebd6cf | 4106 | if (target_async_permitted) |
109c3e39 AC |
4107 | wait_forever_enabled_p = 1; |
4108 | throw_exception (ex); | |
4109 | } | |
4110 | } | |
c906108c | 4111 | |
c6ebd6cf | 4112 | if (target_async_permitted) |
92d1e331 | 4113 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4114 | } |
4115 | ||
c906108c SS |
4116 | /* This takes a program previously attached to and detaches it. After |
4117 | this is done, GDB can be used to debug some other program. We | |
4118 | better not have left any breakpoints in the target program or it'll | |
4119 | die when it hits one. */ | |
4120 | ||
4121 | static void | |
2d717e4f | 4122 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4123 | { |
82f73884 | 4124 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4125 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4126 | |
4127 | if (args) | |
8a3fe4f8 | 4128 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4129 | |
2d717e4f DJ |
4130 | if (!target_has_execution) |
4131 | error (_("No process to detach from.")); | |
4132 | ||
c906108c | 4133 | /* Tell the remote target to detach. */ |
82f73884 PA |
4134 | if (remote_multi_process_p (rs)) |
4135 | sprintf (rs->buf, "D;%x", pid); | |
4136 | else | |
4137 | strcpy (rs->buf, "D"); | |
4138 | ||
4ddda9b5 PA |
4139 | putpkt (rs->buf); |
4140 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4141 | ||
82f73884 PA |
4142 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4143 | ; | |
4144 | else if (rs->buf[0] == '\0') | |
4145 | error (_("Remote doesn't know how to detach")); | |
4146 | else | |
4ddda9b5 | 4147 | error (_("Can't detach process.")); |
c906108c | 4148 | |
c906108c | 4149 | if (from_tty) |
2d717e4f | 4150 | { |
82f73884 PA |
4151 | if (remote_multi_process_p (rs)) |
4152 | printf_filtered (_("Detached from remote %s.\n"), | |
4153 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4154 | else |
82f73884 PA |
4155 | { |
4156 | if (extended) | |
4157 | puts_filtered (_("Detached from remote process.\n")); | |
4158 | else | |
4159 | puts_filtered (_("Ending remote debugging.\n")); | |
4160 | } | |
2d717e4f | 4161 | } |
82f73884 | 4162 | |
74531fed | 4163 | discard_pending_stop_replies (pid); |
82f73884 | 4164 | target_mourn_inferior (); |
2d717e4f DJ |
4165 | } |
4166 | ||
4167 | static void | |
136d6dae | 4168 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4169 | { |
4170 | remote_detach_1 (args, from_tty, 0); | |
4171 | } | |
4172 | ||
4173 | static void | |
136d6dae | 4174 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4175 | { |
4176 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4177 | } |
4178 | ||
6ad8ae5c DJ |
4179 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4180 | ||
43ff13b4 | 4181 | static void |
597320e7 | 4182 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4183 | { |
43ff13b4 | 4184 | if (args) |
2d717e4f | 4185 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4186 | |
2d717e4f DJ |
4187 | /* Make sure we unpush even the extended remote targets; mourn |
4188 | won't do it. So call remote_mourn_1 directly instead of | |
4189 | target_mourn_inferior. */ | |
4190 | remote_mourn_1 (target); | |
4191 | ||
43ff13b4 JM |
4192 | if (from_tty) |
4193 | puts_filtered ("Ending remote debugging.\n"); | |
4194 | } | |
4195 | ||
2d717e4f DJ |
4196 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4197 | be chatty about it. */ | |
4198 | ||
4199 | static void | |
4200 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4201 | { | |
4202 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4203 | int pid; |
96ef3384 | 4204 | char *wait_status = NULL; |
2d717e4f | 4205 | |
74164c56 | 4206 | pid = parse_pid_to_attach (args); |
2d717e4f | 4207 | |
74164c56 JK |
4208 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4209 | way as in other targets. */ | |
2d717e4f DJ |
4210 | |
4211 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4212 | error (_("This target does not support attaching to a process")); | |
4213 | ||
4214 | sprintf (rs->buf, "vAttach;%x", pid); | |
4215 | putpkt (rs->buf); | |
4216 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4217 | ||
3e43a32a MS |
4218 | if (packet_ok (rs->buf, |
4219 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f DJ |
4220 | { |
4221 | if (from_tty) | |
4222 | printf_unfiltered (_("Attached to %s\n"), | |
4223 | target_pid_to_str (pid_to_ptid (pid))); | |
4224 | ||
74531fed PA |
4225 | if (!non_stop) |
4226 | { | |
4227 | /* Save the reply for later. */ | |
4228 | wait_status = alloca (strlen (rs->buf) + 1); | |
4229 | strcpy (wait_status, rs->buf); | |
4230 | } | |
4231 | else if (strcmp (rs->buf, "OK") != 0) | |
4232 | error (_("Attaching to %s failed with: %s"), | |
4233 | target_pid_to_str (pid_to_ptid (pid)), | |
4234 | rs->buf); | |
2d717e4f DJ |
4235 | } |
4236 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4237 | error (_("This target does not support attaching to a process")); | |
4238 | else | |
4239 | error (_("Attaching to %s failed"), | |
4240 | target_pid_to_str (pid_to_ptid (pid))); | |
4241 | ||
6c95b8df | 4242 | set_current_inferior (remote_add_inferior (pid, 1)); |
bad34192 | 4243 | |
2d717e4f | 4244 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4245 | |
bad34192 PA |
4246 | if (non_stop) |
4247 | { | |
4248 | struct thread_info *thread; | |
79d7f229 | 4249 | |
bad34192 PA |
4250 | /* Get list of threads. */ |
4251 | remote_threads_info (target); | |
82f73884 | 4252 | |
bad34192 PA |
4253 | thread = first_thread_of_process (pid); |
4254 | if (thread) | |
4255 | inferior_ptid = thread->ptid; | |
4256 | else | |
4257 | inferior_ptid = pid_to_ptid (pid); | |
4258 | ||
4259 | /* Invalidate our notion of the remote current thread. */ | |
4260 | record_currthread (minus_one_ptid); | |
4261 | } | |
74531fed | 4262 | else |
bad34192 PA |
4263 | { |
4264 | /* Now, if we have thread information, update inferior_ptid. */ | |
4265 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4266 | ||
4267 | /* Add the main thread to the thread list. */ | |
4268 | add_thread_silent (inferior_ptid); | |
4269 | } | |
c0a2216e | 4270 | |
96ef3384 UW |
4271 | /* Next, if the target can specify a description, read it. We do |
4272 | this before anything involving memory or registers. */ | |
4273 | target_find_description (); | |
4274 | ||
74531fed PA |
4275 | if (!non_stop) |
4276 | { | |
4277 | /* Use the previously fetched status. */ | |
4278 | gdb_assert (wait_status != NULL); | |
4279 | ||
4280 | if (target_can_async_p ()) | |
4281 | { | |
4282 | struct stop_reply *stop_reply; | |
4283 | struct cleanup *old_chain; | |
4284 | ||
4285 | stop_reply = stop_reply_xmalloc (); | |
4286 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4287 | remote_parse_stop_reply (wait_status, stop_reply); | |
4288 | discard_cleanups (old_chain); | |
4289 | push_stop_reply (stop_reply); | |
4290 | ||
4291 | target_async (inferior_event_handler, 0); | |
4292 | } | |
4293 | else | |
4294 | { | |
4295 | gdb_assert (wait_status != NULL); | |
4296 | strcpy (rs->buf, wait_status); | |
4297 | rs->cached_wait_status = 1; | |
4298 | } | |
4299 | } | |
4300 | else | |
4301 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4302 | } |
4303 | ||
4304 | static void | |
136d6dae | 4305 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4306 | { |
136d6dae | 4307 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4308 | } |
4309 | ||
c906108c SS |
4310 | /* Convert hex digit A to a number. */ |
4311 | ||
30559e10 | 4312 | static int |
fba45db2 | 4313 | fromhex (int a) |
c906108c SS |
4314 | { |
4315 | if (a >= '0' && a <= '9') | |
4316 | return a - '0'; | |
4317 | else if (a >= 'a' && a <= 'f') | |
4318 | return a - 'a' + 10; | |
4319 | else if (a >= 'A' && a <= 'F') | |
4320 | return a - 'A' + 10; | |
c5aa993b | 4321 | else |
8a3fe4f8 | 4322 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4323 | } |
4324 | ||
00bf0b85 | 4325 | int |
cfd77fa1 | 4326 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4327 | { |
4328 | int i; | |
4329 | ||
30559e10 MS |
4330 | for (i = 0; i < count; i++) |
4331 | { | |
4332 | if (hex[0] == 0 || hex[1] == 0) | |
4333 | { | |
4334 | /* Hex string is short, or of uneven length. | |
23860348 | 4335 | Return the count that has been converted so far. */ |
30559e10 MS |
4336 | return i; |
4337 | } | |
4338 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4339 | hex += 2; | |
4340 | } | |
4341 | return i; | |
4342 | } | |
4343 | ||
c906108c SS |
4344 | /* Convert number NIB to a hex digit. */ |
4345 | ||
4346 | static int | |
fba45db2 | 4347 | tohex (int nib) |
c906108c SS |
4348 | { |
4349 | if (nib < 10) | |
c5aa993b | 4350 | return '0' + nib; |
c906108c | 4351 | else |
c5aa993b | 4352 | return 'a' + nib - 10; |
c906108c | 4353 | } |
30559e10 | 4354 | |
00bf0b85 | 4355 | int |
cfd77fa1 | 4356 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4357 | { |
4358 | int i; | |
a744cf53 | 4359 | |
23860348 | 4360 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4361 | if (count == 0) |
cfd77fa1 | 4362 | count = strlen ((char *) bin); |
30559e10 MS |
4363 | |
4364 | for (i = 0; i < count; i++) | |
4365 | { | |
4366 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4367 | *hex++ = tohex (*bin++ & 0xf); | |
4368 | } | |
4369 | *hex = 0; | |
4370 | return i; | |
4371 | } | |
c906108c | 4372 | \f |
506fb367 DJ |
4373 | /* Check for the availability of vCont. This function should also check |
4374 | the response. */ | |
c906108c SS |
4375 | |
4376 | static void | |
6d820c5c | 4377 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4378 | { |
2e9f7625 | 4379 | char *buf; |
6d820c5c | 4380 | |
2e9f7625 DJ |
4381 | strcpy (rs->buf, "vCont?"); |
4382 | putpkt (rs->buf); | |
6d820c5c | 4383 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4384 | buf = rs->buf; |
c906108c | 4385 | |
506fb367 DJ |
4386 | /* Make sure that the features we assume are supported. */ |
4387 | if (strncmp (buf, "vCont", 5) == 0) | |
4388 | { | |
4389 | char *p = &buf[5]; | |
4390 | int support_s, support_S, support_c, support_C; | |
4391 | ||
4392 | support_s = 0; | |
4393 | support_S = 0; | |
4394 | support_c = 0; | |
4395 | support_C = 0; | |
74531fed | 4396 | rs->support_vCont_t = 0; |
506fb367 DJ |
4397 | while (p && *p == ';') |
4398 | { | |
4399 | p++; | |
4400 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4401 | support_s = 1; | |
4402 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4403 | support_S = 1; | |
4404 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4405 | support_c = 1; | |
4406 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4407 | support_C = 1; | |
74531fed PA |
4408 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4409 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4410 | |
4411 | p = strchr (p, ';'); | |
4412 | } | |
c906108c | 4413 | |
506fb367 DJ |
4414 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4415 | BUF will make packet_ok disable the packet. */ | |
4416 | if (!support_s || !support_S || !support_c || !support_C) | |
4417 | buf[0] = 0; | |
4418 | } | |
c906108c | 4419 | |
444abaca | 4420 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4421 | } |
c906108c | 4422 | |
0d8f58ca PA |
4423 | /* Helper function for building "vCont" resumptions. Write a |
4424 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4425 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4426 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4427 | resumed thread should be single-stepped and/or signalled. If PTID | |
4428 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4429 | represents a process, then all threads of the process are resumed; | |
4430 | the thread to be stepped and/or signalled is given in the global | |
4431 | INFERIOR_PTID. */ | |
4432 | ||
4433 | static char * | |
4434 | append_resumption (char *p, char *endp, | |
4435 | ptid_t ptid, int step, enum target_signal siggnal) | |
4436 | { | |
4437 | struct remote_state *rs = get_remote_state (); | |
4438 | ||
4439 | if (step && siggnal != TARGET_SIGNAL_0) | |
4440 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4441 | else if (step) | |
4442 | p += xsnprintf (p, endp - p, ";s"); | |
4443 | else if (siggnal != TARGET_SIGNAL_0) | |
4444 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4445 | else | |
4446 | p += xsnprintf (p, endp - p, ";c"); | |
4447 | ||
4448 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4449 | { | |
4450 | ptid_t nptid; | |
4451 | ||
4452 | /* All (-1) threads of process. */ | |
4453 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4454 | ||
4455 | p += xsnprintf (p, endp - p, ":"); | |
4456 | p = write_ptid (p, endp, nptid); | |
4457 | } | |
4458 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4459 | { | |
4460 | p += xsnprintf (p, endp - p, ":"); | |
4461 | p = write_ptid (p, endp, ptid); | |
4462 | } | |
4463 | ||
4464 | return p; | |
4465 | } | |
4466 | ||
506fb367 DJ |
4467 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4468 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4469 | resumed thread should be single-stepped and/or signalled. If PTID |
4470 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4471 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4472 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4473 | |
506fb367 DJ |
4474 | This function issues a strict subset of all possible vCont commands at the |
4475 | moment. */ | |
44eaed12 | 4476 | |
506fb367 DJ |
4477 | static int |
4478 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4479 | { | |
4480 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4481 | char *p; |
4482 | char *endp; | |
44eaed12 | 4483 | |
444abaca | 4484 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4485 | remote_vcont_probe (rs); |
44eaed12 | 4486 | |
444abaca | 4487 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4488 | return 0; |
44eaed12 | 4489 | |
82f73884 PA |
4490 | p = rs->buf; |
4491 | endp = rs->buf + get_remote_packet_size (); | |
4492 | ||
506fb367 DJ |
4493 | /* If we could generate a wider range of packets, we'd have to worry |
4494 | about overflowing BUF. Should there be a generic | |
4495 | "multi-part-packet" packet? */ | |
4496 | ||
0d8f58ca PA |
4497 | p += xsnprintf (p, endp - p, "vCont"); |
4498 | ||
79d7f229 | 4499 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4500 | { |
79d7f229 PA |
4501 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4502 | so we don't have any TID numbers the inferior will | |
4503 | understand. Make sure to only send forms that do not specify | |
4504 | a TID. */ | |
a9cbf802 | 4505 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4506 | } |
0d8f58ca | 4507 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4508 | { |
0d8f58ca PA |
4509 | /* Resume all threads (of all processes, or of a single |
4510 | process), with preference for INFERIOR_PTID. This assumes | |
4511 | inferior_ptid belongs to the set of all threads we are about | |
4512 | to resume. */ | |
4513 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4514 | { |
0d8f58ca PA |
4515 | /* Step inferior_ptid, with or without signal. */ |
4516 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4517 | } |
0d8f58ca PA |
4518 | |
4519 | /* And continue others without a signal. */ | |
a9cbf802 | 4520 | append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); |
c906108c SS |
4521 | } |
4522 | else | |
506fb367 DJ |
4523 | { |
4524 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 4525 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4526 | } |
c906108c | 4527 | |
82f73884 PA |
4528 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4529 | putpkt (rs->buf); | |
506fb367 | 4530 | |
74531fed PA |
4531 | if (non_stop) |
4532 | { | |
4533 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4534 | reply will be reported asynchronously by means of a `%Stop' | |
4535 | notification. */ | |
4536 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4537 | if (strcmp (rs->buf, "OK") != 0) | |
4538 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4539 | } | |
4540 | ||
506fb367 | 4541 | return 1; |
c906108c | 4542 | } |
43ff13b4 | 4543 | |
506fb367 DJ |
4544 | /* Tell the remote machine to resume. */ |
4545 | ||
4546 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4547 | ||
4548 | static int last_sent_step; | |
4549 | ||
43ff13b4 | 4550 | static void |
28439f5e PA |
4551 | remote_resume (struct target_ops *ops, |
4552 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4553 | { |
d01949b6 | 4554 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4555 | char *buf; |
43ff13b4 | 4556 | |
43ff13b4 JM |
4557 | last_sent_signal = siggnal; |
4558 | last_sent_step = step; | |
4559 | ||
506fb367 | 4560 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4561 | /* No reverse support (yet) for vCont. */ |
4562 | if (execution_direction != EXEC_REVERSE) | |
4563 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4564 | goto done; | |
506fb367 | 4565 | |
79d7f229 PA |
4566 | /* All other supported resume packets do use Hc, so set the continue |
4567 | thread. */ | |
4568 | if (ptid_equal (ptid, minus_one_ptid)) | |
4569 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4570 | else |
79d7f229 | 4571 | set_continue_thread (ptid); |
506fb367 | 4572 | |
2e9f7625 | 4573 | buf = rs->buf; |
b2175913 MS |
4574 | if (execution_direction == EXEC_REVERSE) |
4575 | { | |
4576 | /* We don't pass signals to the target in reverse exec mode. */ | |
4577 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
7ea6d463 | 4578 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), |
b2175913 | 4579 | siggnal); |
40ab02ce MS |
4580 | |
4581 | if (step | |
4582 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4583 | error (_("Remote reverse-step not supported.")); | |
4584 | if (!step | |
4585 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4586 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4587 | |
b2175913 MS |
4588 | strcpy (buf, step ? "bs" : "bc"); |
4589 | } | |
4590 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4591 | { |
4592 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4593 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4594 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4595 | buf[3] = '\0'; |
4596 | } | |
4597 | else | |
c5aa993b | 4598 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4599 | |
44eaed12 | 4600 | putpkt (buf); |
43ff13b4 | 4601 | |
75c99385 | 4602 | done: |
2acceee2 | 4603 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
4604 | with the event loop. NOTE: this is the one place where all the |
4605 | execution commands end up. We could alternatively do this in each | |
23860348 | 4606 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4607 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4608 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4609 | NOT asynchronously. */ |
362646f5 | 4610 | if (target_can_async_p ()) |
2acceee2 | 4611 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4612 | |
4613 | /* We've just told the target to resume. The remote server will | |
4614 | wait for the inferior to stop, and then send a stop reply. In | |
4615 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4616 | because the stub wouldn't be ready to process it. This applies |
4617 | only to the base all-stop protocol, however. In non-stop (which | |
4618 | only supports vCont), the stub replies with an "OK", and is | |
4619 | immediate able to process further serial input. */ | |
4620 | if (!non_stop) | |
4621 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4622 | } |
c906108c | 4623 | \f |
43ff13b4 JM |
4624 | |
4625 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4626 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4627 | static void |
fba45db2 | 4628 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4629 | { |
43ff13b4 JM |
4630 | signal (SIGINT, handle_remote_sigint); |
4631 | } | |
4632 | ||
23860348 | 4633 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4634 | static void |
fba45db2 | 4635 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4636 | { |
4637 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4638 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4639 | } | |
4640 | ||
4641 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4642 | sent once. It will take effect the second time that the user sends | |
23860348 | 4643 | a ^C. */ |
43ff13b4 | 4644 | static void |
fba45db2 | 4645 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4646 | { |
b803fb0f | 4647 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4648 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4649 | } | |
4650 | ||
6426a772 | 4651 | /* Perform the real interruption of the target execution, in response |
23860348 | 4652 | to a ^C. */ |
c5aa993b | 4653 | static void |
fba45db2 | 4654 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4655 | { |
4656 | if (remote_debug) | |
4657 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4658 | ||
94cc34af | 4659 | target_stop (inferior_ptid); |
43ff13b4 JM |
4660 | } |
4661 | ||
0df8b418 | 4662 | /* Perform interrupt, if the first attempt did not succeed. Just give |
23860348 | 4663 | up on the target alltogether. */ |
2df3850c | 4664 | void |
fba45db2 | 4665 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4666 | { |
2df3850c JM |
4667 | if (remote_debug) |
4668 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4669 | |
4670 | interrupt_query (); | |
43ff13b4 JM |
4671 | } |
4672 | ||
4673 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4674 | stopped. */ |
6426a772 JM |
4675 | static void |
4676 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4677 | { |
4678 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4679 | } |
4680 | ||
c906108c SS |
4681 | /* Send ^C to target to halt it. Target will respond, and send us a |
4682 | packet. */ | |
507f3c78 | 4683 | static void (*ofunc) (int); |
c906108c | 4684 | |
0df8b418 MS |
4685 | /* The command line interface's stop routine. This function is installed |
4686 | as a signal handler for SIGINT. The first time a user requests a | |
4687 | stop, we call remote_stop to send a break or ^C. If there is no | |
7a292a7a | 4688 | response from the target (it didn't stop when the user requested it), |
23860348 | 4689 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4690 | static void |
fba45db2 | 4691 | remote_interrupt (int signo) |
c906108c | 4692 | { |
23860348 | 4693 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4694 | signal (signo, remote_interrupt_twice); |
4695 | ||
b803fb0f | 4696 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4697 | } |
4698 | ||
4699 | /* The user typed ^C twice. */ | |
4700 | ||
4701 | static void | |
fba45db2 | 4702 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4703 | { |
4704 | signal (signo, ofunc); | |
b803fb0f | 4705 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4706 | signal (signo, remote_interrupt); |
4707 | } | |
7a292a7a | 4708 | |
74531fed PA |
4709 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4710 | thread, all threads of a remote process, or all threads of all | |
4711 | processes. */ | |
4712 | ||
4713 | static void | |
4714 | remote_stop_ns (ptid_t ptid) | |
4715 | { | |
4716 | struct remote_state *rs = get_remote_state (); | |
4717 | char *p = rs->buf; | |
4718 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4719 | |
4720 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4721 | remote_vcont_probe (rs); | |
4722 | ||
4723 | if (!rs->support_vCont_t) | |
4724 | error (_("Remote server does not support stopping threads")); | |
4725 | ||
f91d3df5 PA |
4726 | if (ptid_equal (ptid, minus_one_ptid) |
4727 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4728 | p += xsnprintf (p, endp - p, "vCont;t"); |
4729 | else | |
4730 | { | |
4731 | ptid_t nptid; | |
4732 | ||
74531fed PA |
4733 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4734 | ||
4735 | if (ptid_is_pid (ptid)) | |
4736 | /* All (-1) threads of process. */ | |
4737 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4738 | else | |
4739 | { | |
4740 | /* Small optimization: if we already have a stop reply for | |
4741 | this thread, no use in telling the stub we want this | |
4742 | stopped. */ | |
4743 | if (peek_stop_reply (ptid)) | |
4744 | return; | |
4745 | ||
4746 | nptid = ptid; | |
4747 | } | |
4748 | ||
a9cbf802 | 4749 | write_ptid (p, endp, nptid); |
74531fed PA |
4750 | } |
4751 | ||
4752 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4753 | come in asynchronously by notification. */ | |
4754 | putpkt (rs->buf); | |
4755 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4756 | if (strcmp (rs->buf, "OK") != 0) | |
4757 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4758 | } | |
4759 | ||
4760 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4761 | remote target. It is undefined which thread of which process | |
4762 | reports the stop. */ | |
4763 | ||
4764 | static void | |
4765 | remote_stop_as (ptid_t ptid) | |
4766 | { | |
4767 | struct remote_state *rs = get_remote_state (); | |
4768 | ||
3a29589a DJ |
4769 | rs->ctrlc_pending_p = 1; |
4770 | ||
74531fed PA |
4771 | /* If the inferior is stopped already, but the core didn't know |
4772 | about it yet, just ignore the request. The cached wait status | |
4773 | will be collected in remote_wait. */ | |
4774 | if (rs->cached_wait_status) | |
4775 | return; | |
4776 | ||
9a7071a8 JB |
4777 | /* Send interrupt_sequence to remote target. */ |
4778 | send_interrupt_sequence (); | |
74531fed PA |
4779 | } |
4780 | ||
0df8b418 | 4781 | /* This is the generic stop called via the target vector. When a target |
7a292a7a | 4782 | interrupt is requested, either by the command line or the GUI, we |
23860348 | 4783 | will eventually end up here. */ |
74531fed | 4784 | |
c906108c | 4785 | static void |
94cc34af | 4786 | remote_stop (ptid_t ptid) |
c906108c | 4787 | { |
7a292a7a | 4788 | if (remote_debug) |
0f71a2f6 | 4789 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4790 | |
74531fed PA |
4791 | if (non_stop) |
4792 | remote_stop_ns (ptid); | |
c906108c | 4793 | else |
74531fed | 4794 | remote_stop_as (ptid); |
c906108c SS |
4795 | } |
4796 | ||
4797 | /* Ask the user what to do when an interrupt is received. */ | |
4798 | ||
4799 | static void | |
fba45db2 | 4800 | interrupt_query (void) |
c906108c SS |
4801 | { |
4802 | target_terminal_ours (); | |
4803 | ||
74531fed | 4804 | if (target_can_async_p ()) |
c906108c | 4805 | { |
74531fed | 4806 | signal (SIGINT, handle_sigint); |
315a522e | 4807 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4808 | } |
74531fed PA |
4809 | else |
4810 | { | |
9e2f0ad4 HZ |
4811 | if (query (_("Interrupted while waiting for the program.\n\ |
4812 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4813 | { |
4814 | pop_target (); | |
4815 | deprecated_throw_reason (RETURN_QUIT); | |
4816 | } | |
4817 | } | |
c906108c SS |
4818 | |
4819 | target_terminal_inferior (); | |
4820 | } | |
4821 | ||
6426a772 JM |
4822 | /* Enable/disable target terminal ownership. Most targets can use |
4823 | terminal groups to control terminal ownership. Remote targets are | |
4824 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4825 | is required. */ |
6426a772 JM |
4826 | |
4827 | static void | |
75c99385 | 4828 | remote_terminal_inferior (void) |
6426a772 | 4829 | { |
c6ebd6cf | 4830 | if (!target_async_permitted) |
75c99385 PA |
4831 | /* Nothing to do. */ |
4832 | return; | |
4833 | ||
d9d2d8b6 PA |
4834 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4835 | idempotent. The event-loop GDB talking to an asynchronous target | |
4836 | with a synchronous command calls this function from both | |
4837 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4838 | transfer the terminal to the target when it shouldn't this guard | |
4839 | can go away. */ | |
6426a772 JM |
4840 | if (!remote_async_terminal_ours_p) |
4841 | return; | |
4842 | delete_file_handler (input_fd); | |
4843 | remote_async_terminal_ours_p = 0; | |
4844 | initialize_sigint_signal_handler (); | |
4845 | /* NOTE: At this point we could also register our selves as the | |
4846 | recipient of all input. Any characters typed could then be | |
23860348 | 4847 | passed on down to the target. */ |
6426a772 JM |
4848 | } |
4849 | ||
4850 | static void | |
75c99385 | 4851 | remote_terminal_ours (void) |
6426a772 | 4852 | { |
c6ebd6cf | 4853 | if (!target_async_permitted) |
75c99385 PA |
4854 | /* Nothing to do. */ |
4855 | return; | |
4856 | ||
4857 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4858 | if (remote_async_terminal_ours_p) |
4859 | return; | |
4860 | cleanup_sigint_signal_handler (NULL); | |
4861 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4862 | remote_async_terminal_ours_p = 1; | |
4863 | } | |
4864 | ||
176a6961 | 4865 | static void |
917317f4 | 4866 | remote_console_output (char *msg) |
c906108c SS |
4867 | { |
4868 | char *p; | |
4869 | ||
c5aa993b | 4870 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4871 | { |
4872 | char tb[2]; | |
4873 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4874 | |
c906108c SS |
4875 | tb[0] = c; |
4876 | tb[1] = 0; | |
43ff13b4 | 4877 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4878 | } |
74531fed PA |
4879 | gdb_flush (gdb_stdtarg); |
4880 | } | |
4881 | ||
4882 | typedef struct cached_reg | |
4883 | { | |
4884 | int num; | |
4885 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4886 | } cached_reg_t; | |
4887 | ||
4888 | DEF_VEC_O(cached_reg_t); | |
4889 | ||
4890 | struct stop_reply | |
4891 | { | |
4892 | struct stop_reply *next; | |
4893 | ||
4894 | ptid_t ptid; | |
4895 | ||
4896 | struct target_waitstatus ws; | |
4897 | ||
4898 | VEC(cached_reg_t) *regcache; | |
4899 | ||
4900 | int stopped_by_watchpoint_p; | |
4901 | CORE_ADDR watch_data_address; | |
4902 | ||
4903 | int solibs_changed; | |
4904 | int replay_event; | |
dc146f7c VP |
4905 | |
4906 | int core; | |
74531fed PA |
4907 | }; |
4908 | ||
4909 | /* The list of already fetched and acknowledged stop events. */ | |
4910 | static struct stop_reply *stop_reply_queue; | |
4911 | ||
4912 | static struct stop_reply * | |
4913 | stop_reply_xmalloc (void) | |
4914 | { | |
4915 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 4916 | |
74531fed PA |
4917 | r->next = NULL; |
4918 | return r; | |
4919 | } | |
4920 | ||
4921 | static void | |
4922 | stop_reply_xfree (struct stop_reply *r) | |
4923 | { | |
4924 | if (r != NULL) | |
4925 | { | |
4926 | VEC_free (cached_reg_t, r->regcache); | |
4927 | xfree (r); | |
4928 | } | |
c906108c SS |
4929 | } |
4930 | ||
74531fed PA |
4931 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
4932 | discard everything. */ | |
c906108c | 4933 | |
74531fed PA |
4934 | static void |
4935 | discard_pending_stop_replies (int pid) | |
c906108c | 4936 | { |
74531fed | 4937 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 4938 | |
74531fed PA |
4939 | /* Discard the in-flight notification. */ |
4940 | if (pending_stop_reply != NULL | |
4941 | && (pid == -1 | |
4942 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
4943 | { | |
4944 | stop_reply_xfree (pending_stop_reply); | |
4945 | pending_stop_reply = NULL; | |
4946 | } | |
c906108c | 4947 | |
74531fed PA |
4948 | /* Discard the stop replies we have already pulled with |
4949 | vStopped. */ | |
4950 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 4951 | { |
74531fed PA |
4952 | next = reply->next; |
4953 | if (pid == -1 | |
4954 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 4955 | { |
74531fed PA |
4956 | if (reply == stop_reply_queue) |
4957 | stop_reply_queue = reply->next; | |
4958 | else | |
4959 | prev->next = reply->next; | |
4960 | ||
4961 | stop_reply_xfree (reply); | |
9fa2223d | 4962 | } |
74531fed PA |
4963 | else |
4964 | prev = reply; | |
c8e38a49 | 4965 | } |
74531fed | 4966 | } |
43ff13b4 | 4967 | |
74531fed | 4968 | /* Cleanup wrapper. */ |
2e9f7625 | 4969 | |
74531fed PA |
4970 | static void |
4971 | do_stop_reply_xfree (void *arg) | |
4972 | { | |
4973 | struct stop_reply *r = arg; | |
a744cf53 | 4974 | |
74531fed PA |
4975 | stop_reply_xfree (r); |
4976 | } | |
75c99385 | 4977 | |
74531fed PA |
4978 | /* Look for a queued stop reply belonging to PTID. If one is found, |
4979 | remove it from the queue, and return it. Returns NULL if none is | |
4980 | found. If there are still queued events left to process, tell the | |
4981 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 4982 | |
74531fed PA |
4983 | static struct stop_reply * |
4984 | queued_stop_reply (ptid_t ptid) | |
4985 | { | |
0723dbf5 PA |
4986 | struct stop_reply *it; |
4987 | struct stop_reply **it_link; | |
74531fed | 4988 | |
0723dbf5 PA |
4989 | it = stop_reply_queue; |
4990 | it_link = &stop_reply_queue; | |
4991 | while (it) | |
c8e38a49 | 4992 | { |
0723dbf5 PA |
4993 | if (ptid_match (it->ptid, ptid)) |
4994 | { | |
4995 | *it_link = it->next; | |
4996 | it->next = NULL; | |
4997 | break; | |
4998 | } | |
e24a49d8 | 4999 | |
0723dbf5 PA |
5000 | it_link = &it->next; |
5001 | it = *it_link; | |
5002 | } | |
74531fed PA |
5003 | |
5004 | if (stop_reply_queue) | |
5005 | /* There's still at least an event left. */ | |
5006 | mark_async_event_handler (remote_async_inferior_event_token); | |
5007 | ||
5008 | return it; | |
5009 | } | |
5010 | ||
5011 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
5012 | know that we now have at least one queued event left to pass to the | |
5013 | core side, tell the event loop to get back to target_wait soon. */ | |
5014 | ||
5015 | static void | |
5016 | push_stop_reply (struct stop_reply *new_event) | |
5017 | { | |
5018 | struct stop_reply *event; | |
5019 | ||
5020 | if (stop_reply_queue) | |
5021 | { | |
5022 | for (event = stop_reply_queue; | |
5023 | event && event->next; | |
5024 | event = event->next) | |
5025 | ; | |
5026 | ||
5027 | event->next = new_event; | |
5028 | } | |
5029 | else | |
5030 | stop_reply_queue = new_event; | |
5031 | ||
5032 | mark_async_event_handler (remote_async_inferior_event_token); | |
5033 | } | |
5034 | ||
5035 | /* Returns true if we have a stop reply for PTID. */ | |
5036 | ||
5037 | static int | |
5038 | peek_stop_reply (ptid_t ptid) | |
5039 | { | |
5040 | struct stop_reply *it; | |
5041 | ||
5042 | for (it = stop_reply_queue; it; it = it->next) | |
5043 | if (ptid_equal (ptid, it->ptid)) | |
5044 | { | |
5045 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5046 | return 1; | |
5047 | } | |
5048 | ||
5049 | return 0; | |
5050 | } | |
5051 | ||
5052 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5053 | result is stored in EVENT, or throws an error. */ | |
5054 | ||
5055 | static void | |
5056 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5057 | { | |
5058 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5059 | ULONGEST addr; | |
5060 | char *p; | |
5061 | ||
5062 | event->ptid = null_ptid; | |
5063 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5064 | event->ws.value.integer = 0; | |
5065 | event->solibs_changed = 0; | |
5066 | event->replay_event = 0; | |
5067 | event->stopped_by_watchpoint_p = 0; | |
5068 | event->regcache = NULL; | |
dc146f7c | 5069 | event->core = -1; |
74531fed PA |
5070 | |
5071 | switch (buf[0]) | |
5072 | { | |
5073 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5074 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5075 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5076 | ss = signal number | |
5077 | n... = register number | |
5078 | r... = register contents | |
5079 | */ | |
5080 | ||
5081 | p = &buf[3]; /* after Txx */ | |
5082 | while (*p) | |
5083 | { | |
5084 | char *p1; | |
5085 | char *p_temp; | |
5086 | int fieldsize; | |
5087 | LONGEST pnum = 0; | |
43ff13b4 | 5088 | |
cea39f65 MS |
5089 | /* If the packet contains a register number, save it in |
5090 | pnum and set p1 to point to the character following it. | |
5091 | Otherwise p1 points to p. */ | |
3c3bea1c | 5092 | |
cea39f65 MS |
5093 | /* If this packet is an awatch packet, don't parse the 'a' |
5094 | as a register number. */ | |
c8e38a49 | 5095 | |
dc146f7c VP |
5096 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5097 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5098 | { |
5099 | /* Read the ``P'' register number. */ | |
5100 | pnum = strtol (p, &p_temp, 16); | |
5101 | p1 = p_temp; | |
5102 | } | |
5103 | else | |
5104 | p1 = p; | |
802188a7 | 5105 | |
cea39f65 MS |
5106 | if (p1 == p) /* No register number present here. */ |
5107 | { | |
5108 | p1 = strchr (p, ':'); | |
5109 | if (p1 == NULL) | |
5110 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5111 | Packet: '%s'\n"), |
cea39f65 MS |
5112 | p, buf); |
5113 | if (strncmp (p, "thread", p1 - p) == 0) | |
5114 | event->ptid = read_ptid (++p1, &p); | |
5115 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5116 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5117 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5118 | { | |
5119 | event->stopped_by_watchpoint_p = 1; | |
5120 | p = unpack_varlen_hex (++p1, &addr); | |
5121 | event->watch_data_address = (CORE_ADDR) addr; | |
5122 | } | |
5123 | else if (strncmp (p, "library", p1 - p) == 0) | |
5124 | { | |
5125 | p1++; | |
5126 | p_temp = p1; | |
5127 | while (*p_temp && *p_temp != ';') | |
5128 | p_temp++; | |
c8e38a49 | 5129 | |
cea39f65 MS |
5130 | event->solibs_changed = 1; |
5131 | p = p_temp; | |
5132 | } | |
5133 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5134 | { | |
5135 | /* NO_HISTORY event. | |
5136 | p1 will indicate "begin" or "end", but | |
5137 | it makes no difference for now, so ignore it. */ | |
5138 | event->replay_event = 1; | |
5139 | p_temp = strchr (p1 + 1, ';'); | |
5140 | if (p_temp) | |
c8e38a49 | 5141 | p = p_temp; |
cea39f65 | 5142 | } |
dc146f7c VP |
5143 | else if (strncmp (p, "core", p1 - p) == 0) |
5144 | { | |
5145 | ULONGEST c; | |
a744cf53 | 5146 | |
dc146f7c VP |
5147 | p = unpack_varlen_hex (++p1, &c); |
5148 | event->core = c; | |
5149 | } | |
cea39f65 MS |
5150 | else |
5151 | { | |
5152 | /* Silently skip unknown optional info. */ | |
5153 | p_temp = strchr (p1 + 1, ';'); | |
5154 | if (p_temp) | |
5155 | p = p_temp; | |
5156 | } | |
5157 | } | |
5158 | else | |
5159 | { | |
5160 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5161 | cached_reg_t cached_reg; | |
74531fed | 5162 | |
cea39f65 | 5163 | p = p1; |
75c99385 | 5164 | |
cea39f65 MS |
5165 | if (*p != ':') |
5166 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5167 | Packet: '%s'\n"), |
cea39f65 MS |
5168 | p, buf); |
5169 | ++p; | |
43ff13b4 | 5170 | |
cea39f65 MS |
5171 | if (reg == NULL) |
5172 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5173 | Packet: '%s'\n"), |
7c47795c | 5174 | hex_string (pnum), p, buf); |
c8e38a49 | 5175 | |
cea39f65 | 5176 | cached_reg.num = reg->regnum; |
4100683b | 5177 | |
cea39f65 MS |
5178 | fieldsize = hex2bin (p, cached_reg.data, |
5179 | register_size (target_gdbarch, | |
5180 | reg->regnum)); | |
5181 | p += 2 * fieldsize; | |
5182 | if (fieldsize < register_size (target_gdbarch, | |
5183 | reg->regnum)) | |
5184 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5185 | |
cea39f65 MS |
5186 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5187 | } | |
c8e38a49 | 5188 | |
cea39f65 MS |
5189 | if (*p != ';') |
5190 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5191 | buf, p); | |
5192 | ++p; | |
5193 | } | |
c8e38a49 PA |
5194 | /* fall through */ |
5195 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5196 | if (event->solibs_changed) |
5197 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5198 | else if (event->replay_event) | |
5199 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5200 | else |
5201 | { | |
74531fed PA |
5202 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5203 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5204 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5205 | } | |
5206 | break; | |
5207 | case 'W': /* Target exited. */ | |
5208 | case 'X': | |
5209 | { | |
5210 | char *p; | |
5211 | int pid; | |
5212 | ULONGEST value; | |
82f73884 | 5213 | |
c8e38a49 PA |
5214 | /* GDB used to accept only 2 hex chars here. Stubs should |
5215 | only send more if they detect GDB supports multi-process | |
5216 | support. */ | |
5217 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5218 | |
c8e38a49 PA |
5219 | if (buf[0] == 'W') |
5220 | { | |
5221 | /* The remote process exited. */ | |
74531fed PA |
5222 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5223 | event->ws.value.integer = value; | |
c8e38a49 PA |
5224 | } |
5225 | else | |
5226 | { | |
5227 | /* The remote process exited with a signal. */ | |
74531fed PA |
5228 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5229 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5230 | } |
82f73884 | 5231 | |
c8e38a49 PA |
5232 | /* If no process is specified, assume inferior_ptid. */ |
5233 | pid = ptid_get_pid (inferior_ptid); | |
5234 | if (*p == '\0') | |
5235 | ; | |
5236 | else if (*p == ';') | |
5237 | { | |
5238 | p++; | |
5239 | ||
5240 | if (p == '\0') | |
82f73884 | 5241 | ; |
c8e38a49 PA |
5242 | else if (strncmp (p, |
5243 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5244 | { |
c8e38a49 | 5245 | ULONGEST upid; |
a744cf53 | 5246 | |
c8e38a49 PA |
5247 | p += sizeof ("process:") - 1; |
5248 | unpack_varlen_hex (p, &upid); | |
5249 | pid = upid; | |
82f73884 PA |
5250 | } |
5251 | else | |
5252 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5253 | } |
c8e38a49 PA |
5254 | else |
5255 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5256 | event->ptid = pid_to_ptid (pid); |
5257 | } | |
5258 | break; | |
5259 | } | |
5260 | ||
5261 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5262 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5263 | } | |
5264 | ||
5265 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5266 | stop notification (%Stop). Those can come it at any time, hence, | |
5267 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5268 | making is finished, before querying the stub for more events with | |
5269 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5270 | upon receiving the %Stop notification, something like this could | |
5271 | happen: | |
5272 | ||
5273 | 1.1) --> Hg 1 | |
5274 | 1.2) <-- OK | |
5275 | 1.3) --> g | |
5276 | 1.4) <-- %Stop | |
5277 | 1.5) --> vStopped | |
5278 | 1.6) <-- (registers reply to step #1.3) | |
5279 | ||
5280 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5281 | query. | |
5282 | ||
5283 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5284 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5285 | doing whatever we were doing: | |
5286 | ||
5287 | 2.1) --> Hg 1 | |
5288 | 2.2) <-- OK | |
5289 | 2.3) --> g | |
5290 | 2.4) <-- %Stop | |
5291 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5292 | 2.5) <-- (registers reply to step #2.3) | |
5293 | ||
5294 | Eventualy after step #2.5, we return to the event loop, which | |
5295 | notices there's an event on the | |
5296 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5297 | associated callback --- the function below. At this point, we're | |
5298 | always safe to start a vStopped sequence. : | |
5299 | ||
5300 | 2.6) --> vStopped | |
5301 | 2.7) <-- T05 thread:2 | |
5302 | 2.8) --> vStopped | |
5303 | 2.9) --> OK | |
5304 | */ | |
5305 | ||
5306 | static void | |
5307 | remote_get_pending_stop_replies (void) | |
5308 | { | |
5309 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5310 | |
5311 | if (pending_stop_reply) | |
5312 | { | |
5313 | /* acknowledge */ | |
5314 | putpkt ("vStopped"); | |
5315 | ||
5316 | /* Now we can rely on it. */ | |
5317 | push_stop_reply (pending_stop_reply); | |
5318 | pending_stop_reply = NULL; | |
5319 | ||
5320 | while (1) | |
5321 | { | |
5322 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5323 | if (strcmp (rs->buf, "OK") == 0) | |
5324 | break; | |
5325 | else | |
5326 | { | |
5327 | struct cleanup *old_chain; | |
5328 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5329 | ||
5330 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5331 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5332 | ||
5333 | /* acknowledge */ | |
5334 | putpkt ("vStopped"); | |
5335 | ||
5336 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5337 | { | |
5338 | /* Now we can rely on it. */ | |
5339 | discard_cleanups (old_chain); | |
5340 | push_stop_reply (stop_reply); | |
5341 | } | |
5342 | else | |
5343 | /* We got an unknown stop reply. */ | |
5344 | do_cleanups (old_chain); | |
5345 | } | |
5346 | } | |
5347 | } | |
5348 | } | |
5349 | ||
5350 | ||
5351 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5352 | event that is to be returned to the core. This function always | |
5353 | destroys STOP_REPLY. */ | |
5354 | ||
5355 | static ptid_t | |
5356 | process_stop_reply (struct stop_reply *stop_reply, | |
5357 | struct target_waitstatus *status) | |
5358 | { | |
5359 | ptid_t ptid; | |
5360 | ||
5361 | *status = stop_reply->ws; | |
5362 | ptid = stop_reply->ptid; | |
5363 | ||
5364 | /* If no thread/process was reported by the stub, assume the current | |
5365 | inferior. */ | |
5366 | if (ptid_equal (ptid, null_ptid)) | |
5367 | ptid = inferior_ptid; | |
5368 | ||
5f3563ea PA |
5369 | if (status->kind != TARGET_WAITKIND_EXITED |
5370 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5371 | { |
5f3563ea PA |
5372 | /* Expedited registers. */ |
5373 | if (stop_reply->regcache) | |
5374 | { | |
217f1f79 UW |
5375 | struct regcache *regcache |
5376 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5377 | cached_reg_t *reg; |
5378 | int ix; | |
5379 | ||
5380 | for (ix = 0; | |
5381 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5382 | ix++) | |
217f1f79 | 5383 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5384 | VEC_free (cached_reg_t, stop_reply->regcache); |
5385 | } | |
74531fed | 5386 | |
5f3563ea PA |
5387 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5388 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5389 | |
5390 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5391 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5392 | } |
5393 | ||
74531fed PA |
5394 | stop_reply_xfree (stop_reply); |
5395 | return ptid; | |
5396 | } | |
5397 | ||
5398 | /* The non-stop mode version of target_wait. */ | |
5399 | ||
5400 | static ptid_t | |
47608cb1 | 5401 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5402 | { |
5403 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5404 | struct stop_reply *stop_reply; |
5405 | int ret; | |
5406 | ||
5407 | /* If in non-stop mode, get out of getpkt even if a | |
5408 | notification is received. */ | |
5409 | ||
5410 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5411 | 0 /* forever */); | |
5412 | while (1) | |
5413 | { | |
5414 | if (ret != -1) | |
5415 | switch (rs->buf[0]) | |
5416 | { | |
5417 | case 'E': /* Error of some sort. */ | |
5418 | /* We're out of sync with the target now. Did it continue | |
5419 | or not? We can't tell which thread it was in non-stop, | |
5420 | so just ignore this. */ | |
5421 | warning (_("Remote failure reply: %s"), rs->buf); | |
5422 | break; | |
5423 | case 'O': /* Console output. */ | |
5424 | remote_console_output (rs->buf + 1); | |
5425 | break; | |
5426 | default: | |
5427 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5428 | break; | |
5429 | } | |
5430 | ||
5431 | /* Acknowledge a pending stop reply that may have arrived in the | |
5432 | mean time. */ | |
5433 | if (pending_stop_reply != NULL) | |
5434 | remote_get_pending_stop_replies (); | |
5435 | ||
5436 | /* If indeed we noticed a stop reply, we're done. */ | |
5437 | stop_reply = queued_stop_reply (ptid); | |
5438 | if (stop_reply != NULL) | |
5439 | return process_stop_reply (stop_reply, status); | |
5440 | ||
47608cb1 | 5441 | /* Still no event. If we're just polling for an event, then |
74531fed | 5442 | return to the event loop. */ |
47608cb1 | 5443 | if (options & TARGET_WNOHANG) |
74531fed PA |
5444 | { |
5445 | status->kind = TARGET_WAITKIND_IGNORE; | |
5446 | return minus_one_ptid; | |
5447 | } | |
5448 | ||
47608cb1 | 5449 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5450 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5451 | 1 /* forever */); | |
5452 | } | |
5453 | } | |
5454 | ||
5455 | /* Wait until the remote machine stops, then return, storing status in | |
5456 | STATUS just as `wait' would. */ | |
5457 | ||
5458 | static ptid_t | |
47608cb1 | 5459 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5460 | { |
5461 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5462 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5463 | char *buf; |
74531fed PA |
5464 | struct stop_reply *stop_reply; |
5465 | ||
47608cb1 PA |
5466 | again: |
5467 | ||
74531fed PA |
5468 | status->kind = TARGET_WAITKIND_IGNORE; |
5469 | status->value.integer = 0; | |
5470 | ||
5471 | stop_reply = queued_stop_reply (ptid); | |
5472 | if (stop_reply != NULL) | |
5473 | return process_stop_reply (stop_reply, status); | |
5474 | ||
5475 | if (rs->cached_wait_status) | |
5476 | /* Use the cached wait status, but only once. */ | |
5477 | rs->cached_wait_status = 0; | |
5478 | else | |
5479 | { | |
5480 | int ret; | |
5481 | ||
5482 | if (!target_is_async_p ()) | |
5483 | { | |
5484 | ofunc = signal (SIGINT, remote_interrupt); | |
5485 | /* If the user hit C-c before this packet, or between packets, | |
5486 | pretend that it was hit right here. */ | |
5487 | if (quit_flag) | |
5488 | { | |
5489 | quit_flag = 0; | |
5490 | remote_interrupt (SIGINT); | |
5491 | } | |
5492 | } | |
5493 | ||
5494 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5495 | _never_ wait for ever -> test on target_is_async_p(). | |
5496 | However, before we do that we need to ensure that the caller | |
5497 | knows how to take the target into/out of async mode. */ | |
5498 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5499 | if (!target_is_async_p ()) | |
5500 | signal (SIGINT, ofunc); | |
5501 | } | |
5502 | ||
5503 | buf = rs->buf; | |
5504 | ||
5505 | remote_stopped_by_watchpoint_p = 0; | |
5506 | ||
5507 | /* We got something. */ | |
5508 | rs->waiting_for_stop_reply = 0; | |
5509 | ||
3a29589a DJ |
5510 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5511 | an 'F' or 'O' packet. */ | |
5512 | if (buf[0] != 'F' && buf[0] != 'O') | |
5513 | rs->ctrlc_pending_p = 0; | |
5514 | ||
74531fed PA |
5515 | switch (buf[0]) |
5516 | { | |
5517 | case 'E': /* Error of some sort. */ | |
5518 | /* We're out of sync with the target now. Did it continue or | |
5519 | not? Not is more likely, so report a stop. */ | |
5520 | warning (_("Remote failure reply: %s"), buf); | |
5521 | status->kind = TARGET_WAITKIND_STOPPED; | |
5522 | status->value.sig = TARGET_SIGNAL_0; | |
5523 | break; | |
5524 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5525 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5526 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5527 | break; |
5528 | case 'T': case 'S': case 'X': case 'W': | |
5529 | { | |
5530 | struct stop_reply *stop_reply; | |
5531 | struct cleanup *old_chain; | |
5532 | ||
5533 | stop_reply = stop_reply_xmalloc (); | |
5534 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5535 | remote_parse_stop_reply (buf, stop_reply); | |
5536 | discard_cleanups (old_chain); | |
5537 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5538 | break; |
5539 | } | |
5540 | case 'O': /* Console output. */ | |
5541 | remote_console_output (buf + 1); | |
e24a49d8 | 5542 | |
c8e38a49 PA |
5543 | /* The target didn't really stop; keep waiting. */ |
5544 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5545 | |
c8e38a49 PA |
5546 | break; |
5547 | case '\0': | |
5548 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5549 | { | |
5550 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5551 | remote system doesn't support it. */ | |
5552 | target_terminal_ours_for_output (); | |
5553 | printf_filtered | |
5554 | ("Can't send signals to this remote system. %s not sent.\n", | |
5555 | target_signal_to_name (last_sent_signal)); | |
5556 | last_sent_signal = TARGET_SIGNAL_0; | |
5557 | target_terminal_inferior (); | |
5558 | ||
5559 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5560 | putpkt ((char *) buf); | |
5561 | ||
5562 | /* We just told the target to resume, so a stop reply is in | |
5563 | order. */ | |
e24a49d8 | 5564 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5565 | break; |
43ff13b4 | 5566 | } |
c8e38a49 PA |
5567 | /* else fallthrough */ |
5568 | default: | |
5569 | warning (_("Invalid remote reply: %s"), buf); | |
5570 | /* Keep waiting. */ | |
5571 | rs->waiting_for_stop_reply = 1; | |
5572 | break; | |
43ff13b4 | 5573 | } |
c8e38a49 | 5574 | |
c8e38a49 | 5575 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5576 | { |
5577 | /* Nothing interesting happened. If we're doing a non-blocking | |
5578 | poll, we're done. Otherwise, go back to waiting. */ | |
5579 | if (options & TARGET_WNOHANG) | |
5580 | return minus_one_ptid; | |
5581 | else | |
5582 | goto again; | |
5583 | } | |
74531fed PA |
5584 | else if (status->kind != TARGET_WAITKIND_EXITED |
5585 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5586 | { |
5587 | if (!ptid_equal (event_ptid, null_ptid)) | |
5588 | record_currthread (event_ptid); | |
5589 | else | |
5590 | event_ptid = inferior_ptid; | |
43ff13b4 | 5591 | } |
74531fed PA |
5592 | else |
5593 | /* A process exit. Invalidate our notion of current thread. */ | |
5594 | record_currthread (minus_one_ptid); | |
79d7f229 | 5595 | |
82f73884 | 5596 | return event_ptid; |
43ff13b4 JM |
5597 | } |
5598 | ||
74531fed PA |
5599 | /* Wait until the remote machine stops, then return, storing status in |
5600 | STATUS just as `wait' would. */ | |
5601 | ||
c8e38a49 | 5602 | static ptid_t |
117de6a9 | 5603 | remote_wait (struct target_ops *ops, |
47608cb1 | 5604 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5605 | { |
5606 | ptid_t event_ptid; | |
5607 | ||
74531fed | 5608 | if (non_stop) |
47608cb1 | 5609 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5610 | else |
47608cb1 | 5611 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5612 | |
74531fed | 5613 | if (target_can_async_p ()) |
c8e38a49 | 5614 | { |
74531fed PA |
5615 | /* If there are are events left in the queue tell the event loop |
5616 | to return here. */ | |
5617 | if (stop_reply_queue) | |
5618 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5619 | } |
c8e38a49 PA |
5620 | |
5621 | return event_ptid; | |
5622 | } | |
5623 | ||
74ca34ce | 5624 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5625 | |
b96ec7ac | 5626 | static int |
56be3814 | 5627 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5628 | { |
5629 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5630 | char *buf, *p; |
b96ec7ac AC |
5631 | char regp[MAX_REGISTER_SIZE]; |
5632 | int i; | |
5633 | ||
74ca34ce DJ |
5634 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5635 | return 0; | |
5636 | ||
5637 | if (reg->pnum == -1) | |
5638 | return 0; | |
5639 | ||
2e9f7625 | 5640 | p = rs->buf; |
fcad0fa4 | 5641 | *p++ = 'p'; |
74ca34ce | 5642 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5643 | *p++ = '\0'; |
1f4437a4 MS |
5644 | putpkt (rs->buf); |
5645 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5646 | |
2e9f7625 DJ |
5647 | buf = rs->buf; |
5648 | ||
74ca34ce DJ |
5649 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5650 | { | |
5651 | case PACKET_OK: | |
5652 | break; | |
5653 | case PACKET_UNKNOWN: | |
5654 | return 0; | |
5655 | case PACKET_ERROR: | |
27a9c0bf MS |
5656 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5657 | gdbarch_register_name (get_regcache_arch (regcache), | |
5658 | reg->regnum), | |
5659 | buf); | |
74ca34ce | 5660 | } |
3f9a994c JB |
5661 | |
5662 | /* If this register is unfetchable, tell the regcache. */ | |
5663 | if (buf[0] == 'x') | |
8480adf2 | 5664 | { |
56be3814 | 5665 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5666 | return 1; |
b96ec7ac | 5667 | } |
b96ec7ac | 5668 | |
3f9a994c JB |
5669 | /* Otherwise, parse and supply the value. */ |
5670 | p = buf; | |
5671 | i = 0; | |
5672 | while (p[0] != 0) | |
5673 | { | |
5674 | if (p[1] == 0) | |
74ca34ce | 5675 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5676 | |
5677 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5678 | p += 2; | |
5679 | } | |
56be3814 | 5680 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5681 | return 1; |
b96ec7ac AC |
5682 | } |
5683 | ||
74ca34ce DJ |
5684 | /* Fetch the registers included in the target's 'g' packet. */ |
5685 | ||
29709017 DJ |
5686 | static int |
5687 | send_g_packet (void) | |
c906108c | 5688 | { |
d01949b6 | 5689 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5690 | int buf_len; |
c906108c | 5691 | |
74ca34ce DJ |
5692 | sprintf (rs->buf, "g"); |
5693 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5694 | |
29709017 DJ |
5695 | /* We can get out of synch in various cases. If the first character |
5696 | in the buffer is not a hex character, assume that has happened | |
5697 | and try to fetch another packet to read. */ | |
5698 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5699 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5700 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5701 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5702 | { | |
5703 | if (remote_debug) | |
5704 | fprintf_unfiltered (gdb_stdlog, | |
5705 | "Bad register packet; fetching a new packet\n"); | |
5706 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5707 | } | |
5708 | ||
74ca34ce DJ |
5709 | buf_len = strlen (rs->buf); |
5710 | ||
5711 | /* Sanity check the received packet. */ | |
5712 | if (buf_len % 2 != 0) | |
5713 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5714 | |
5715 | return buf_len / 2; | |
5716 | } | |
5717 | ||
5718 | static void | |
56be3814 | 5719 | process_g_packet (struct regcache *regcache) |
29709017 | 5720 | { |
4a22f64d | 5721 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5722 | struct remote_state *rs = get_remote_state (); |
5723 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5724 | int i, buf_len; | |
5725 | char *p; | |
5726 | char *regs; | |
5727 | ||
5728 | buf_len = strlen (rs->buf); | |
5729 | ||
5730 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5731 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5732 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5733 | ||
5734 | /* Save the size of the packet sent to us by the target. It is used | |
5735 | as a heuristic when determining the max size of packets that the | |
5736 | target can safely receive. */ | |
5737 | if (rsa->actual_register_packet_size == 0) | |
5738 | rsa->actual_register_packet_size = buf_len; | |
5739 | ||
5740 | /* If this is smaller than we guessed the 'g' packet would be, | |
5741 | update our records. A 'g' reply that doesn't include a register's | |
5742 | value implies either that the register is not available, or that | |
5743 | the 'p' packet must be used. */ | |
5744 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5745 | { |
74ca34ce DJ |
5746 | rsa->sizeof_g_packet = buf_len / 2; |
5747 | ||
4a22f64d | 5748 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5749 | { |
74ca34ce DJ |
5750 | if (rsa->regs[i].pnum == -1) |
5751 | continue; | |
5752 | ||
5753 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5754 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5755 | else |
74ca34ce | 5756 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5757 | } |
74ca34ce | 5758 | } |
b323314b | 5759 | |
74ca34ce | 5760 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5761 | |
5762 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5763 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5764 | |
c906108c SS |
5765 | /* Reply describes registers byte by byte, each byte encoded as two |
5766 | hex characters. Suck them all up, then supply them to the | |
5767 | register cacheing/storage mechanism. */ | |
5768 | ||
74ca34ce | 5769 | p = rs->buf; |
ea9c271d | 5770 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5771 | { |
74ca34ce DJ |
5772 | if (p[0] == 0 || p[1] == 0) |
5773 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5774 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5775 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 5776 | |
c906108c | 5777 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5778 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5779 | else |
5780 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5781 | p += 2; | |
5782 | } | |
5783 | ||
a744cf53 MS |
5784 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5785 | { | |
5786 | struct packet_reg *r = &rsa->regs[i]; | |
5787 | ||
5788 | if (r->in_g_packet) | |
5789 | { | |
5790 | if (r->offset * 2 >= strlen (rs->buf)) | |
5791 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5792 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 5793 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
5794 | else if (rs->buf[r->offset * 2] == 'x') |
5795 | { | |
5796 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5797 | /* The register isn't available, mark it as such (at | |
5798 | the same time setting the value to zero). */ | |
5799 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5800 | } | |
5801 | else | |
5802 | regcache_raw_supply (regcache, r->regnum, | |
5803 | regs + r->offset); | |
5804 | } | |
5805 | } | |
c906108c SS |
5806 | } |
5807 | ||
29709017 | 5808 | static void |
56be3814 | 5809 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5810 | { |
5811 | send_g_packet (); | |
56be3814 | 5812 | process_g_packet (regcache); |
29709017 DJ |
5813 | } |
5814 | ||
e6e4e701 PA |
5815 | /* Make the remote selected traceframe match GDB's selected |
5816 | traceframe. */ | |
5817 | ||
5818 | static void | |
5819 | set_remote_traceframe (void) | |
5820 | { | |
5821 | int newnum; | |
5822 | ||
5823 | if (remote_traceframe_number == get_traceframe_number ()) | |
5824 | return; | |
5825 | ||
5826 | /* Avoid recursion, remote_trace_find calls us again. */ | |
5827 | remote_traceframe_number = get_traceframe_number (); | |
5828 | ||
5829 | newnum = target_trace_find (tfind_number, | |
5830 | get_traceframe_number (), 0, 0, NULL); | |
5831 | ||
5832 | /* Should not happen. If it does, all bets are off. */ | |
5833 | if (newnum != get_traceframe_number ()) | |
5834 | warning (_("could not set remote traceframe")); | |
5835 | } | |
5836 | ||
74ca34ce | 5837 | static void |
28439f5e PA |
5838 | remote_fetch_registers (struct target_ops *ops, |
5839 | struct regcache *regcache, int regnum) | |
74ca34ce | 5840 | { |
74ca34ce DJ |
5841 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5842 | int i; | |
5843 | ||
e6e4e701 | 5844 | set_remote_traceframe (); |
79d7f229 | 5845 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5846 | |
5847 | if (regnum >= 0) | |
5848 | { | |
5849 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5850 | |
74ca34ce DJ |
5851 | gdb_assert (reg != NULL); |
5852 | ||
5853 | /* If this register might be in the 'g' packet, try that first - | |
5854 | we are likely to read more than one register. If this is the | |
5855 | first 'g' packet, we might be overly optimistic about its | |
5856 | contents, so fall back to 'p'. */ | |
5857 | if (reg->in_g_packet) | |
5858 | { | |
56be3814 | 5859 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5860 | if (reg->in_g_packet) |
5861 | return; | |
5862 | } | |
5863 | ||
56be3814 | 5864 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5865 | return; |
5866 | ||
5867 | /* This register is not available. */ | |
56be3814 | 5868 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5869 | |
5870 | return; | |
5871 | } | |
5872 | ||
56be3814 | 5873 | fetch_registers_using_g (regcache); |
74ca34ce | 5874 | |
4a22f64d | 5875 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5876 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5877 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5878 | { |
5879 | /* This register is not available. */ | |
56be3814 | 5880 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5881 | } |
5882 | } | |
5883 | ||
c906108c SS |
5884 | /* Prepare to store registers. Since we may send them all (using a |
5885 | 'G' request), we have to read out the ones we don't want to change | |
5886 | first. */ | |
5887 | ||
c5aa993b | 5888 | static void |
316f2060 | 5889 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5890 | { |
ea9c271d | 5891 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5892 | int i; |
cfd77fa1 | 5893 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5894 | |
c906108c | 5895 | /* Make sure the entire registers array is valid. */ |
444abaca | 5896 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5897 | { |
5898 | case PACKET_DISABLE: | |
5899 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5900 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5901 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5902 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5903 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
5904 | break; |
5905 | case PACKET_ENABLE: | |
5906 | break; | |
5907 | } | |
5908 | } | |
5909 | ||
ad10f812 | 5910 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 5911 | packet was not recognized. */ |
5a2468f5 JM |
5912 | |
5913 | static int | |
1f4437a4 MS |
5914 | store_register_using_P (const struct regcache *regcache, |
5915 | struct packet_reg *reg) | |
5a2468f5 | 5916 | { |
4a22f64d | 5917 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 5918 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 5919 | /* Try storing a single register. */ |
6d820c5c | 5920 | char *buf = rs->buf; |
cfd77fa1 | 5921 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 5922 | char *p; |
5a2468f5 | 5923 | |
74ca34ce DJ |
5924 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
5925 | return 0; | |
5926 | ||
5927 | if (reg->pnum == -1) | |
5928 | return 0; | |
5929 | ||
ea9c271d | 5930 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 5931 | p = buf + strlen (buf); |
56be3814 | 5932 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 5933 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
5934 | putpkt (rs->buf); |
5935 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 5936 | |
74ca34ce DJ |
5937 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
5938 | { | |
5939 | case PACKET_OK: | |
5940 | return 1; | |
5941 | case PACKET_ERROR: | |
27a9c0bf MS |
5942 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
5943 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
5944 | case PACKET_UNKNOWN: |
5945 | return 0; | |
5946 | default: | |
5947 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
5948 | } | |
c906108c SS |
5949 | } |
5950 | ||
23860348 MS |
5951 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
5952 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
5953 | |
5954 | static void | |
56be3814 | 5955 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 5956 | { |
d01949b6 | 5957 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 5958 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 5959 | gdb_byte *regs; |
c906108c SS |
5960 | char *p; |
5961 | ||
193cb69f AC |
5962 | /* Extract all the registers in the regcache copying them into a |
5963 | local buffer. */ | |
5964 | { | |
b323314b | 5965 | int i; |
a744cf53 | 5966 | |
ea9c271d DJ |
5967 | regs = alloca (rsa->sizeof_g_packet); |
5968 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 5969 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 5970 | { |
ea9c271d | 5971 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 5972 | |
b323314b | 5973 | if (r->in_g_packet) |
56be3814 | 5974 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
5975 | } |
5976 | } | |
c906108c SS |
5977 | |
5978 | /* Command describes registers byte by byte, | |
5979 | each byte encoded as two hex characters. */ | |
6d820c5c | 5980 | p = rs->buf; |
193cb69f | 5981 | *p++ = 'G'; |
74ca34ce DJ |
5982 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
5983 | updated. */ | |
5984 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
5985 | putpkt (rs->buf); |
5986 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5987 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
5988 | error (_("Could not write registers; remote failure reply '%s'"), |
5989 | rs->buf); | |
c906108c | 5990 | } |
74ca34ce DJ |
5991 | |
5992 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
5993 | of the register cache buffer. FIXME: ignores errors. */ | |
5994 | ||
5995 | static void | |
28439f5e PA |
5996 | remote_store_registers (struct target_ops *ops, |
5997 | struct regcache *regcache, int regnum) | |
74ca34ce | 5998 | { |
74ca34ce DJ |
5999 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6000 | int i; | |
6001 | ||
e6e4e701 | 6002 | set_remote_traceframe (); |
79d7f229 | 6003 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
6004 | |
6005 | if (regnum >= 0) | |
6006 | { | |
6007 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 6008 | |
74ca34ce DJ |
6009 | gdb_assert (reg != NULL); |
6010 | ||
6011 | /* Always prefer to store registers using the 'P' packet if | |
6012 | possible; we often change only a small number of registers. | |
6013 | Sometimes we change a larger number; we'd need help from a | |
6014 | higher layer to know to use 'G'. */ | |
56be3814 | 6015 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
6016 | return; |
6017 | ||
6018 | /* For now, don't complain if we have no way to write the | |
6019 | register. GDB loses track of unavailable registers too | |
6020 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 6021 | any way to read the register, either... */ |
74ca34ce DJ |
6022 | if (!reg->in_g_packet) |
6023 | return; | |
6024 | ||
56be3814 | 6025 | store_registers_using_G (regcache); |
74ca34ce DJ |
6026 | return; |
6027 | } | |
6028 | ||
56be3814 | 6029 | store_registers_using_G (regcache); |
74ca34ce | 6030 | |
4a22f64d | 6031 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 6032 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 6033 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
6034 | /* See above for why we do not issue an error here. */ |
6035 | continue; | |
6036 | } | |
c906108c SS |
6037 | \f |
6038 | ||
6039 | /* Return the number of hex digits in num. */ | |
6040 | ||
6041 | static int | |
fba45db2 | 6042 | hexnumlen (ULONGEST num) |
c906108c SS |
6043 | { |
6044 | int i; | |
6045 | ||
6046 | for (i = 0; num != 0; i++) | |
6047 | num >>= 4; | |
6048 | ||
6049 | return max (i, 1); | |
6050 | } | |
6051 | ||
2df3850c | 6052 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
6053 | |
6054 | static int | |
fba45db2 | 6055 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6056 | { |
c906108c | 6057 | int len = hexnumlen (num); |
a744cf53 | 6058 | |
2df3850c JM |
6059 | return hexnumnstr (buf, num, len); |
6060 | } | |
6061 | ||
c906108c | 6062 | |
2df3850c | 6063 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6064 | |
2df3850c | 6065 | static int |
fba45db2 | 6066 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6067 | { |
6068 | int i; | |
6069 | ||
6070 | buf[width] = '\0'; | |
6071 | ||
6072 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6073 | { |
c5aa993b | 6074 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6075 | num >>= 4; |
6076 | } | |
6077 | ||
2df3850c | 6078 | return width; |
c906108c SS |
6079 | } |
6080 | ||
23860348 | 6081 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6082 | |
6083 | static CORE_ADDR | |
fba45db2 | 6084 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6085 | { |
911c95a5 | 6086 | int address_size = remote_address_size; |
a744cf53 | 6087 | |
911c95a5 UW |
6088 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6089 | if (!address_size) | |
1cf3db46 | 6090 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6091 | |
6092 | if (address_size > 0 | |
6093 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6094 | { |
6095 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6096 | in a ULONGEST variable. */ |
c906108c | 6097 | ULONGEST mask = 1; |
a744cf53 | 6098 | |
911c95a5 | 6099 | mask = (mask << address_size) - 1; |
c906108c SS |
6100 | addr &= mask; |
6101 | } | |
6102 | return addr; | |
6103 | } | |
6104 | ||
a31ea83d DJ |
6105 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6106 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6107 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6108 | (which may be more than *OUT_LEN due to escape characters). The | |
6109 | total number of bytes in the output buffer will be at most | |
6110 | OUT_MAXLEN. */ | |
6111 | ||
6112 | static int | |
6113 | remote_escape_output (const gdb_byte *buffer, int len, | |
6114 | gdb_byte *out_buf, int *out_len, | |
6115 | int out_maxlen) | |
6116 | { | |
6117 | int input_index, output_index; | |
6118 | ||
6119 | output_index = 0; | |
6120 | for (input_index = 0; input_index < len; input_index++) | |
6121 | { | |
6122 | gdb_byte b = buffer[input_index]; | |
6123 | ||
6124 | if (b == '$' || b == '#' || b == '}') | |
6125 | { | |
6126 | /* These must be escaped. */ | |
6127 | if (output_index + 2 > out_maxlen) | |
6128 | break; | |
6129 | out_buf[output_index++] = '}'; | |
6130 | out_buf[output_index++] = b ^ 0x20; | |
6131 | } | |
6132 | else | |
6133 | { | |
6134 | if (output_index + 1 > out_maxlen) | |
6135 | break; | |
6136 | out_buf[output_index++] = b; | |
6137 | } | |
6138 | } | |
6139 | ||
6140 | *out_len = input_index; | |
6141 | return output_index; | |
6142 | } | |
6143 | ||
0876f84a DJ |
6144 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6145 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6146 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6147 | ||
6148 | This function reverses remote_escape_output. It allows more | |
6149 | escaped characters than that function does, in particular because | |
6150 | '*' must be escaped to avoid the run-length encoding processing | |
6151 | in reading packets. */ | |
6152 | ||
6153 | static int | |
6154 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6155 | gdb_byte *out_buf, int out_maxlen) | |
6156 | { | |
6157 | int input_index, output_index; | |
6158 | int escaped; | |
6159 | ||
6160 | output_index = 0; | |
6161 | escaped = 0; | |
6162 | for (input_index = 0; input_index < len; input_index++) | |
6163 | { | |
6164 | gdb_byte b = buffer[input_index]; | |
6165 | ||
6166 | if (output_index + 1 > out_maxlen) | |
6167 | { | |
6168 | warning (_("Received too much data from remote target;" | |
6169 | " ignoring overflow.")); | |
6170 | return output_index; | |
6171 | } | |
6172 | ||
6173 | if (escaped) | |
6174 | { | |
6175 | out_buf[output_index++] = b ^ 0x20; | |
6176 | escaped = 0; | |
6177 | } | |
6178 | else if (b == '}') | |
6179 | escaped = 1; | |
6180 | else | |
6181 | out_buf[output_index++] = b; | |
6182 | } | |
6183 | ||
6184 | if (escaped) | |
6185 | error (_("Unmatched escape character in target response.")); | |
6186 | ||
6187 | return output_index; | |
6188 | } | |
6189 | ||
c906108c SS |
6190 | /* Determine whether the remote target supports binary downloading. |
6191 | This is accomplished by sending a no-op memory write of zero length | |
6192 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6193 | the whole packet, since many stubs strip the eighth bit and |
6194 | subsequently compute a wrong checksum, which causes real havoc with | |
6195 | remote_write_bytes. | |
7a292a7a | 6196 | |
96baa820 | 6197 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 6198 | clean. In cases like this, the user should clear "remote |
23860348 | 6199 | X-packet". */ |
96baa820 | 6200 | |
c906108c | 6201 | static void |
fba45db2 | 6202 | check_binary_download (CORE_ADDR addr) |
c906108c | 6203 | { |
d01949b6 | 6204 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6205 | |
444abaca | 6206 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6207 | { |
96baa820 JM |
6208 | case PACKET_DISABLE: |
6209 | break; | |
6210 | case PACKET_ENABLE: | |
6211 | break; | |
6212 | case PACKET_SUPPORT_UNKNOWN: | |
6213 | { | |
96baa820 | 6214 | char *p; |
802188a7 | 6215 | |
2e9f7625 | 6216 | p = rs->buf; |
96baa820 JM |
6217 | *p++ = 'X'; |
6218 | p += hexnumstr (p, (ULONGEST) addr); | |
6219 | *p++ = ','; | |
6220 | p += hexnumstr (p, (ULONGEST) 0); | |
6221 | *p++ = ':'; | |
6222 | *p = '\0'; | |
802188a7 | 6223 | |
2e9f7625 | 6224 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6225 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6226 | |
2e9f7625 | 6227 | if (rs->buf[0] == '\0') |
96baa820 JM |
6228 | { |
6229 | if (remote_debug) | |
6230 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6231 | "binary downloading NOT " |
6232 | "supported by target\n"); | |
444abaca | 6233 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6234 | } |
6235 | else | |
6236 | { | |
6237 | if (remote_debug) | |
6238 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 6239 | "binary downloading supported by target\n"); |
444abaca | 6240 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6241 | } |
6242 | break; | |
6243 | } | |
c906108c SS |
6244 | } |
6245 | } | |
6246 | ||
6247 | /* Write memory data directly to the remote machine. | |
6248 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6249 | HEADER is the starting part of the packet. |
c906108c SS |
6250 | MEMADDR is the address in the remote memory space. |
6251 | MYADDR is the address of the buffer in our space. | |
6252 | LEN is the number of bytes. | |
a76d924d DJ |
6253 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6254 | should send data as binary ('X'), or hex-encoded ('M'). | |
6255 | ||
6256 | The function creates packet of the form | |
6257 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6258 | ||
6259 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6260 | ||
6261 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6262 | are omitted. | |
6263 | ||
6264 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6265 | error. Only transfer a single packet. */ |
c906108c | 6266 | |
a76d924d DJ |
6267 | static int |
6268 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6269 | const gdb_byte *myaddr, int len, | |
6270 | char packet_format, int use_length) | |
c906108c | 6271 | { |
6d820c5c | 6272 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6273 | char *p; |
a76d924d DJ |
6274 | char *plen = NULL; |
6275 | int plenlen = 0; | |
917317f4 JM |
6276 | int todo; |
6277 | int nr_bytes; | |
a257b5bb | 6278 | int payload_size; |
6765f3e5 | 6279 | int payload_length; |
a76d924d DJ |
6280 | int header_length; |
6281 | ||
6282 | if (packet_format != 'X' && packet_format != 'M') | |
6283 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 6284 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 6285 | |
b2182ed2 DJ |
6286 | if (len <= 0) |
6287 | return 0; | |
6288 | ||
3de11b2e | 6289 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6290 | |
6d820c5c DJ |
6291 | /* The packet buffer will be large enough for the payload; |
6292 | get_memory_packet_size ensures this. */ | |
a76d924d | 6293 | rs->buf[0] = '\0'; |
c906108c | 6294 | |
a257b5bb | 6295 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
6296 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
6297 | ||
a76d924d DJ |
6298 | payload_size -= strlen ("$,:#NN"); |
6299 | if (!use_length) | |
0df8b418 | 6300 | /* The comma won't be used. */ |
a76d924d DJ |
6301 | payload_size += 1; |
6302 | header_length = strlen (header); | |
6303 | payload_size -= header_length; | |
3de11b2e | 6304 | payload_size -= hexnumlen (memaddr); |
c906108c | 6305 | |
a76d924d | 6306 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6307 | |
a76d924d DJ |
6308 | strcat (rs->buf, header); |
6309 | p = rs->buf + strlen (header); | |
6310 | ||
6311 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6312 | if (packet_format == 'X') | |
c906108c | 6313 | { |
23860348 | 6314 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6315 | todo = min (len, payload_size); |
a76d924d DJ |
6316 | if (use_length) |
6317 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6318 | todo = min (todo, payload_size); |
a76d924d DJ |
6319 | } |
6320 | else | |
6321 | { | |
23860348 | 6322 | /* Num bytes that will fit. */ |
a257b5bb | 6323 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6324 | if (use_length) |
6325 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6326 | todo = min (todo, payload_size / 2); |
917317f4 | 6327 | } |
a76d924d | 6328 | |
3de11b2e NS |
6329 | if (todo <= 0) |
6330 | internal_error (__FILE__, __LINE__, | |
6331 | _("minumum packet size too small to write data")); | |
802188a7 | 6332 | |
6765f3e5 DJ |
6333 | /* If we already need another packet, then try to align the end |
6334 | of this packet to a useful boundary. */ | |
6335 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6336 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6337 | ||
a257b5bb | 6338 | /* Append "<memaddr>". */ |
917317f4 JM |
6339 | memaddr = remote_address_masked (memaddr); |
6340 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6341 | |
a76d924d DJ |
6342 | if (use_length) |
6343 | { | |
6344 | /* Append ",". */ | |
6345 | *p++ = ','; | |
802188a7 | 6346 | |
a76d924d DJ |
6347 | /* Append <len>. Retain the location/size of <len>. It may need to |
6348 | be adjusted once the packet body has been created. */ | |
6349 | plen = p; | |
6350 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6351 | p += plenlen; | |
6352 | } | |
a257b5bb AC |
6353 | |
6354 | /* Append ":". */ | |
917317f4 JM |
6355 | *p++ = ':'; |
6356 | *p = '\0'; | |
802188a7 | 6357 | |
a257b5bb | 6358 | /* Append the packet body. */ |
a76d924d | 6359 | if (packet_format == 'X') |
917317f4 | 6360 | { |
917317f4 JM |
6361 | /* Binary mode. Send target system values byte by byte, in |
6362 | increasing byte addresses. Only escape certain critical | |
6363 | characters. */ | |
6765f3e5 DJ |
6364 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6365 | payload_size); | |
6366 | ||
6367 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6368 | a second try to keep the end of the packet aligned. Don't do |
6369 | this if the packet is tiny. */ | |
6370 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6371 | { |
6372 | int new_nr_bytes; | |
6373 | ||
6374 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6375 | - memaddr); | |
6376 | if (new_nr_bytes != nr_bytes) | |
6377 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6378 | p, &nr_bytes, | |
6379 | payload_size); | |
6380 | } | |
6381 | ||
6382 | p += payload_length; | |
a76d924d | 6383 | if (use_length && nr_bytes < todo) |
c906108c | 6384 | { |
802188a7 | 6385 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6386 | and we have actually sent fewer bytes than planned. |
6387 | Fix-up the length field of the packet. Use the same | |
6388 | number of characters as before. */ | |
917317f4 JM |
6389 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6390 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6391 | } |
a76d924d DJ |
6392 | } |
6393 | else | |
6394 | { | |
917317f4 JM |
6395 | /* Normal mode: Send target system values byte by byte, in |
6396 | increasing byte addresses. Each byte is encoded as a two hex | |
6397 | value. */ | |
2644f393 | 6398 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6399 | p += 2 * nr_bytes; |
c906108c | 6400 | } |
802188a7 | 6401 | |
2e9f7625 | 6402 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6403 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6404 | |
2e9f7625 | 6405 | if (rs->buf[0] == 'E') |
917317f4 JM |
6406 | { |
6407 | /* There is no correspondance between what the remote protocol | |
6408 | uses for errors and errno codes. We would like a cleaner way | |
6409 | of representing errors (big enough to include errno codes, | |
6410 | bfd_error codes, and others). But for now just return EIO. */ | |
6411 | errno = EIO; | |
6412 | return 0; | |
6413 | } | |
802188a7 | 6414 | |
23860348 MS |
6415 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6416 | fewer bytes than we'd planned. */ | |
917317f4 | 6417 | return nr_bytes; |
c906108c SS |
6418 | } |
6419 | ||
a76d924d DJ |
6420 | /* Write memory data directly to the remote machine. |
6421 | This does not inform the data cache; the data cache uses this. | |
6422 | MEMADDR is the address in the remote memory space. | |
6423 | MYADDR is the address of the buffer in our space. | |
6424 | LEN is the number of bytes. | |
6425 | ||
6426 | Returns number of bytes transferred, or 0 (setting errno) for | |
6427 | error. Only transfer a single packet. */ | |
6428 | ||
f7605bc2 | 6429 | static int |
a76d924d DJ |
6430 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
6431 | { | |
6432 | char *packet_format = 0; | |
6433 | ||
6434 | /* Check whether the target supports binary download. */ | |
6435 | check_binary_download (memaddr); | |
6436 | ||
6437 | switch (remote_protocol_packets[PACKET_X].support) | |
6438 | { | |
6439 | case PACKET_ENABLE: | |
6440 | packet_format = "X"; | |
6441 | break; | |
6442 | case PACKET_DISABLE: | |
6443 | packet_format = "M"; | |
6444 | break; | |
6445 | case PACKET_SUPPORT_UNKNOWN: | |
6446 | internal_error (__FILE__, __LINE__, | |
6447 | _("remote_write_bytes: bad internal state")); | |
6448 | default: | |
6449 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6450 | } | |
6451 | ||
6452 | return remote_write_bytes_aux (packet_format, | |
6453 | memaddr, myaddr, len, packet_format[0], 1); | |
6454 | } | |
6455 | ||
c906108c SS |
6456 | /* Read memory data directly from the remote machine. |
6457 | This does not use the data cache; the data cache uses this. | |
6458 | MEMADDR is the address in the remote memory space. | |
6459 | MYADDR is the address of the buffer in our space. | |
6460 | LEN is the number of bytes. | |
6461 | ||
6462 | Returns number of bytes transferred, or 0 for error. */ | |
6463 | ||
f7605bc2 | 6464 | static int |
cfd77fa1 | 6465 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6466 | { |
6d820c5c | 6467 | struct remote_state *rs = get_remote_state (); |
23860348 | 6468 | int max_buf_size; /* Max size of packet output buffer. */ |
f7605bc2 PA |
6469 | char *p; |
6470 | int todo; | |
6471 | int i; | |
c906108c | 6472 | |
b2182ed2 DJ |
6473 | if (len <= 0) |
6474 | return 0; | |
6475 | ||
11cf8741 | 6476 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6477 | /* The packet buffer will be large enough for the payload; |
6478 | get_memory_packet_size ensures this. */ | |
c906108c | 6479 | |
f7605bc2 PA |
6480 | /* Number if bytes that will fit. */ |
6481 | todo = min (len, max_buf_size / 2); | |
c906108c | 6482 | |
f7605bc2 PA |
6483 | /* Construct "m"<memaddr>","<len>". */ |
6484 | memaddr = remote_address_masked (memaddr); | |
6485 | p = rs->buf; | |
6486 | *p++ = 'm'; | |
6487 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6488 | *p++ = ','; | |
6489 | p += hexnumstr (p, (ULONGEST) todo); | |
6490 | *p = '\0'; | |
6491 | putpkt (rs->buf); | |
6492 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6493 | if (rs->buf[0] == 'E' | |
6494 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6495 | && rs->buf[3] == '\0') | |
6496 | { | |
6497 | /* There is no correspondance between what the remote protocol | |
6498 | uses for errors and errno codes. We would like a cleaner way | |
6499 | of representing errors (big enough to include errno codes, | |
6500 | bfd_error codes, and others). But for now just return | |
6501 | EIO. */ | |
6502 | errno = EIO; | |
6503 | return 0; | |
c906108c | 6504 | } |
f7605bc2 PA |
6505 | /* Reply describes memory byte by byte, each byte encoded as two hex |
6506 | characters. */ | |
6507 | p = rs->buf; | |
6508 | i = hex2bin (p, myaddr, todo); | |
6509 | /* Return what we have. Let higher layers handle partial reads. */ | |
6510 | return i; | |
c906108c | 6511 | } |
74531fed PA |
6512 | \f |
6513 | ||
6514 | /* Remote notification handler. */ | |
6515 | ||
6516 | static void | |
6517 | handle_notification (char *buf, size_t length) | |
6518 | { | |
6519 | if (strncmp (buf, "Stop:", 5) == 0) | |
6520 | { | |
6521 | if (pending_stop_reply) | |
0723dbf5 PA |
6522 | { |
6523 | /* We've already parsed the in-flight stop-reply, but the | |
6524 | stub for some reason thought we didn't, possibly due to | |
6525 | timeout on its side. Just ignore it. */ | |
6526 | if (remote_debug) | |
6527 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6528 | } | |
74531fed PA |
6529 | else |
6530 | { | |
6531 | struct cleanup *old_chain; | |
6532 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6533 | |
74531fed PA |
6534 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6535 | ||
6536 | remote_parse_stop_reply (buf + 5, reply); | |
6537 | ||
6538 | discard_cleanups (old_chain); | |
6539 | ||
6540 | /* Be careful to only set it after parsing, since an error | |
6541 | may be thrown then. */ | |
6542 | pending_stop_reply = reply; | |
6543 | ||
6544 | /* Notify the event loop there's a stop reply to acknowledge | |
6545 | and that there may be more events to fetch. */ | |
6546 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6547 | |
6548 | if (remote_debug) | |
6549 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6550 | } |
6551 | } | |
6552 | else | |
6553 | /* We ignore notifications we don't recognize, for compatibility | |
6554 | with newer stubs. */ | |
6555 | ; | |
6556 | } | |
6557 | ||
c906108c SS |
6558 | \f |
6559 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6560 | transferring to or from debugger address BUFFER. Write to inferior |
6561 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6562 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6563 | |
c906108c | 6564 | static int |
961cb7b5 | 6565 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6566 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6567 | struct target_ops *target) |
c906108c | 6568 | { |
4930751a C |
6569 | int res; |
6570 | ||
e6e4e701 | 6571 | set_remote_traceframe (); |
82f73884 PA |
6572 | set_general_thread (inferior_ptid); |
6573 | ||
4930751a | 6574 | if (should_write) |
b2182ed2 | 6575 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6576 | else |
b2182ed2 | 6577 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6578 | |
6579 | return res; | |
c906108c SS |
6580 | } |
6581 | ||
a76d924d DJ |
6582 | /* Sends a packet with content determined by the printf format string |
6583 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6584 | whether the packet was a success, a failure, or unknown. */ | |
6585 | ||
2c0b251b | 6586 | static enum packet_result |
a76d924d DJ |
6587 | remote_send_printf (const char *format, ...) |
6588 | { | |
6589 | struct remote_state *rs = get_remote_state (); | |
6590 | int max_size = get_remote_packet_size (); | |
a76d924d | 6591 | va_list ap; |
a744cf53 | 6592 | |
a76d924d DJ |
6593 | va_start (ap, format); |
6594 | ||
6595 | rs->buf[0] = '\0'; | |
6596 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
9b20d036 | 6597 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
6598 | |
6599 | if (putpkt (rs->buf) < 0) | |
6600 | error (_("Communication problem with target.")); | |
6601 | ||
6602 | rs->buf[0] = '\0'; | |
6603 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6604 | ||
6605 | return packet_check_result (rs->buf); | |
6606 | } | |
6607 | ||
6608 | static void | |
6609 | restore_remote_timeout (void *p) | |
6610 | { | |
6611 | int value = *(int *)p; | |
a744cf53 | 6612 | |
a76d924d DJ |
6613 | remote_timeout = value; |
6614 | } | |
6615 | ||
6616 | /* Flash writing can take quite some time. We'll set | |
6617 | effectively infinite timeout for flash operations. | |
6618 | In future, we'll need to decide on a better approach. */ | |
6619 | static const int remote_flash_timeout = 1000; | |
6620 | ||
6621 | static void | |
6622 | remote_flash_erase (struct target_ops *ops, | |
6623 | ULONGEST address, LONGEST length) | |
6624 | { | |
5af949e3 | 6625 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6626 | int saved_remote_timeout = remote_timeout; |
6627 | enum packet_result ret; | |
a76d924d DJ |
6628 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6629 | &saved_remote_timeout); | |
a744cf53 | 6630 | |
a76d924d DJ |
6631 | remote_timeout = remote_flash_timeout; |
6632 | ||
6633 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6634 | phex (address, addr_size), |
a76d924d DJ |
6635 | phex (length, 4)); |
6636 | switch (ret) | |
6637 | { | |
6638 | case PACKET_UNKNOWN: | |
6639 | error (_("Remote target does not support flash erase")); | |
6640 | case PACKET_ERROR: | |
6641 | error (_("Error erasing flash with vFlashErase packet")); | |
6642 | default: | |
6643 | break; | |
6644 | } | |
6645 | ||
6646 | do_cleanups (back_to); | |
6647 | } | |
6648 | ||
6649 | static LONGEST | |
6650 | remote_flash_write (struct target_ops *ops, | |
6651 | ULONGEST address, LONGEST length, | |
6652 | const gdb_byte *data) | |
6653 | { | |
6654 | int saved_remote_timeout = remote_timeout; | |
6655 | int ret; | |
6656 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6657 | &saved_remote_timeout); | |
6658 | ||
6659 | remote_timeout = remote_flash_timeout; | |
6660 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6661 | do_cleanups (back_to); | |
6662 | ||
6663 | return ret; | |
6664 | } | |
6665 | ||
6666 | static void | |
6667 | remote_flash_done (struct target_ops *ops) | |
6668 | { | |
6669 | int saved_remote_timeout = remote_timeout; | |
6670 | int ret; | |
6671 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6672 | &saved_remote_timeout); | |
6673 | ||
6674 | remote_timeout = remote_flash_timeout; | |
6675 | ret = remote_send_printf ("vFlashDone"); | |
6676 | do_cleanups (back_to); | |
6677 | ||
6678 | switch (ret) | |
6679 | { | |
6680 | case PACKET_UNKNOWN: | |
6681 | error (_("Remote target does not support vFlashDone")); | |
6682 | case PACKET_ERROR: | |
6683 | error (_("Error finishing flash operation")); | |
6684 | default: | |
6685 | break; | |
6686 | } | |
6687 | } | |
6688 | ||
c906108c | 6689 | static void |
fba45db2 | 6690 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6691 | { |
6692 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6693 | } | |
6694 | \f | |
6695 | /* Stuff for dealing with the packets which are part of this protocol. | |
6696 | See comment at top of file for details. */ | |
6697 | ||
0876f84a | 6698 | /* Read a single character from the remote end. */ |
c906108c SS |
6699 | |
6700 | static int | |
fba45db2 | 6701 | readchar (int timeout) |
c906108c SS |
6702 | { |
6703 | int ch; | |
6704 | ||
2cd58942 | 6705 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6706 | |
2acceee2 | 6707 | if (ch >= 0) |
0876f84a | 6708 | return ch; |
2acceee2 JM |
6709 | |
6710 | switch ((enum serial_rc) ch) | |
c906108c SS |
6711 | { |
6712 | case SERIAL_EOF: | |
ce5ce7ed | 6713 | pop_target (); |
8a3fe4f8 | 6714 | error (_("Remote connection closed")); |
2acceee2 | 6715 | /* no return */ |
c906108c | 6716 | case SERIAL_ERROR: |
4ac8c4da | 6717 | pop_target (); |
3e43a32a MS |
6718 | perror_with_name (_("Remote communication error. " |
6719 | "Target disconnected.")); | |
2acceee2 | 6720 | /* no return */ |
c906108c | 6721 | case SERIAL_TIMEOUT: |
2acceee2 | 6722 | break; |
c906108c | 6723 | } |
2acceee2 | 6724 | return ch; |
c906108c SS |
6725 | } |
6726 | ||
6d820c5c DJ |
6727 | /* Send the command in *BUF to the remote machine, and read the reply |
6728 | into *BUF. Report an error if we get an error reply. Resize | |
6729 | *BUF using xrealloc if necessary to hold the result, and update | |
6730 | *SIZEOF_BUF. */ | |
c906108c SS |
6731 | |
6732 | static void | |
6d820c5c DJ |
6733 | remote_send (char **buf, |
6734 | long *sizeof_buf) | |
c906108c | 6735 | { |
6d820c5c | 6736 | putpkt (*buf); |
c2d11a7d | 6737 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6738 | |
6d820c5c DJ |
6739 | if ((*buf)[0] == 'E') |
6740 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6741 | } |
6742 | ||
6e5abd65 PA |
6743 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6744 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6745 | etc. The caller is responsible for releasing the returned | |
6746 | memory. */ | |
6747 | ||
6748 | static char * | |
6749 | escape_buffer (const char *buf, int n) | |
6750 | { | |
6751 | struct cleanup *old_chain; | |
6752 | struct ui_file *stb; | |
6753 | char *str; | |
6e5abd65 PA |
6754 | |
6755 | stb = mem_fileopen (); | |
6756 | old_chain = make_cleanup_ui_file_delete (stb); | |
6757 | ||
6758 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6759 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6760 | do_cleanups (old_chain); |
6761 | return str; | |
6762 | } | |
6763 | ||
c906108c SS |
6764 | /* Display a null-terminated packet on stdout, for debugging, using C |
6765 | string notation. */ | |
6766 | ||
6767 | static void | |
fba45db2 | 6768 | print_packet (char *buf) |
c906108c SS |
6769 | { |
6770 | puts_filtered ("\""); | |
43e526b9 | 6771 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6772 | puts_filtered ("\""); |
6773 | } | |
6774 | ||
6775 | int | |
fba45db2 | 6776 | putpkt (char *buf) |
c906108c SS |
6777 | { |
6778 | return putpkt_binary (buf, strlen (buf)); | |
6779 | } | |
6780 | ||
6781 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6782 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6783 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6784 | and for a possible /0 if we are debugging (remote_debug) and want |
6785 | to print the sent packet as a string. */ | |
c906108c SS |
6786 | |
6787 | static int | |
fba45db2 | 6788 | putpkt_binary (char *buf, int cnt) |
c906108c | 6789 | { |
2d717e4f | 6790 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6791 | int i; |
6792 | unsigned char csum = 0; | |
11cf8741 | 6793 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6794 | |
c906108c SS |
6795 | int ch; |
6796 | int tcount = 0; | |
6797 | char *p; | |
6798 | ||
e24a49d8 PA |
6799 | /* Catch cases like trying to read memory or listing threads while |
6800 | we're waiting for a stop reply. The remote server wouldn't be | |
6801 | ready to handle this request, so we'd hang and timeout. We don't | |
6802 | have to worry about this in synchronous mode, because in that | |
6803 | case it's not possible to issue a command while the target is | |
74531fed PA |
6804 | running. This is not a problem in non-stop mode, because in that |
6805 | case, the stub is always ready to process serial input. */ | |
6806 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6807 | error (_("Cannot execute this command while the target is running.")); |
6808 | ||
2d717e4f DJ |
6809 | /* We're sending out a new packet. Make sure we don't look at a |
6810 | stale cached response. */ | |
6811 | rs->cached_wait_status = 0; | |
6812 | ||
c906108c SS |
6813 | /* Copy the packet into buffer BUF2, encapsulating it |
6814 | and giving it a checksum. */ | |
6815 | ||
c906108c SS |
6816 | p = buf2; |
6817 | *p++ = '$'; | |
6818 | ||
6819 | for (i = 0; i < cnt; i++) | |
6820 | { | |
6821 | csum += buf[i]; | |
6822 | *p++ = buf[i]; | |
6823 | } | |
6824 | *p++ = '#'; | |
6825 | *p++ = tohex ((csum >> 4) & 0xf); | |
6826 | *p++ = tohex (csum & 0xf); | |
6827 | ||
6828 | /* Send it over and over until we get a positive ack. */ | |
6829 | ||
6830 | while (1) | |
6831 | { | |
6832 | int started_error_output = 0; | |
6833 | ||
6834 | if (remote_debug) | |
6835 | { | |
6e5abd65 PA |
6836 | struct cleanup *old_chain; |
6837 | char *str; | |
6838 | ||
c906108c | 6839 | *p = '\0'; |
6e5abd65 PA |
6840 | str = escape_buffer (buf2, p - buf2); |
6841 | old_chain = make_cleanup (xfree, str); | |
6842 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6843 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6844 | do_cleanups (old_chain); |
c906108c | 6845 | } |
2cd58942 | 6846 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6847 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6848 | |
a6f3e723 SL |
6849 | /* If this is a no acks version of the remote protocol, send the |
6850 | packet and move on. */ | |
6851 | if (rs->noack_mode) | |
6852 | break; | |
6853 | ||
74531fed PA |
6854 | /* Read until either a timeout occurs (-2) or '+' is read. |
6855 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6856 | while (1) |
6857 | { | |
6858 | ch = readchar (remote_timeout); | |
6859 | ||
c5aa993b | 6860 | if (remote_debug) |
c906108c SS |
6861 | { |
6862 | switch (ch) | |
6863 | { | |
6864 | case '+': | |
1216fa2c | 6865 | case '-': |
c906108c SS |
6866 | case SERIAL_TIMEOUT: |
6867 | case '$': | |
74531fed | 6868 | case '%': |
c906108c SS |
6869 | if (started_error_output) |
6870 | { | |
6871 | putchar_unfiltered ('\n'); | |
6872 | started_error_output = 0; | |
6873 | } | |
6874 | } | |
6875 | } | |
6876 | ||
6877 | switch (ch) | |
6878 | { | |
6879 | case '+': | |
6880 | if (remote_debug) | |
0f71a2f6 | 6881 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6882 | return 1; |
1216fa2c AC |
6883 | case '-': |
6884 | if (remote_debug) | |
6885 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 6886 | /* FALLTHROUGH */ |
c906108c | 6887 | case SERIAL_TIMEOUT: |
c5aa993b | 6888 | tcount++; |
c906108c SS |
6889 | if (tcount > 3) |
6890 | return 0; | |
23860348 | 6891 | break; /* Retransmit buffer. */ |
c906108c SS |
6892 | case '$': |
6893 | { | |
40e3f985 | 6894 | if (remote_debug) |
2bc416ba | 6895 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6896 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6897 | /* It's probably an old response sent because an ACK |
6898 | was lost. Gobble up the packet and ack it so it | |
6899 | doesn't get retransmitted when we resend this | |
6900 | packet. */ | |
6d820c5c | 6901 | skip_frame (); |
d6f7abdf | 6902 | serial_write (remote_desc, "+", 1); |
23860348 | 6903 | continue; /* Now, go look for +. */ |
c906108c | 6904 | } |
74531fed PA |
6905 | |
6906 | case '%': | |
6907 | { | |
6908 | int val; | |
6909 | ||
6910 | /* If we got a notification, handle it, and go back to looking | |
6911 | for an ack. */ | |
6912 | /* We've found the start of a notification. Now | |
6913 | collect the data. */ | |
6914 | val = read_frame (&rs->buf, &rs->buf_size); | |
6915 | if (val >= 0) | |
6916 | { | |
6917 | if (remote_debug) | |
6918 | { | |
6e5abd65 PA |
6919 | struct cleanup *old_chain; |
6920 | char *str; | |
6921 | ||
6922 | str = escape_buffer (rs->buf, val); | |
6923 | old_chain = make_cleanup (xfree, str); | |
6924 | fprintf_unfiltered (gdb_stdlog, | |
6925 | " Notification received: %s\n", | |
6926 | str); | |
6927 | do_cleanups (old_chain); | |
74531fed PA |
6928 | } |
6929 | handle_notification (rs->buf, val); | |
6930 | /* We're in sync now, rewait for the ack. */ | |
6931 | tcount = 0; | |
6932 | } | |
6933 | else | |
6934 | { | |
6935 | if (remote_debug) | |
6936 | { | |
6937 | if (!started_error_output) | |
6938 | { | |
6939 | started_error_output = 1; | |
6940 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
6941 | } | |
6942 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
6943 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
6944 | } | |
6945 | } | |
6946 | continue; | |
6947 | } | |
6948 | /* fall-through */ | |
c906108c SS |
6949 | default: |
6950 | if (remote_debug) | |
6951 | { | |
6952 | if (!started_error_output) | |
6953 | { | |
6954 | started_error_output = 1; | |
0f71a2f6 | 6955 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 6956 | } |
0f71a2f6 | 6957 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
6958 | } |
6959 | continue; | |
6960 | } | |
23860348 | 6961 | break; /* Here to retransmit. */ |
c906108c SS |
6962 | } |
6963 | ||
6964 | #if 0 | |
6965 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
6966 | able to get out next time we call QUIT, without anything as |
6967 | violent as interrupt_query. If we want to provide a way out of | |
6968 | here without getting to the next QUIT, it should be based on | |
6969 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
6970 | if (quit_flag) |
6971 | { | |
6972 | quit_flag = 0; | |
6973 | interrupt_query (); | |
6974 | } | |
6975 | #endif | |
6976 | } | |
a6f3e723 | 6977 | return 0; |
c906108c SS |
6978 | } |
6979 | ||
6d820c5c DJ |
6980 | /* Come here after finding the start of a frame when we expected an |
6981 | ack. Do our best to discard the rest of this packet. */ | |
6982 | ||
6983 | static void | |
6984 | skip_frame (void) | |
6985 | { | |
6986 | int c; | |
6987 | ||
6988 | while (1) | |
6989 | { | |
6990 | c = readchar (remote_timeout); | |
6991 | switch (c) | |
6992 | { | |
6993 | case SERIAL_TIMEOUT: | |
6994 | /* Nothing we can do. */ | |
6995 | return; | |
6996 | case '#': | |
6997 | /* Discard the two bytes of checksum and stop. */ | |
6998 | c = readchar (remote_timeout); | |
6999 | if (c >= 0) | |
7000 | c = readchar (remote_timeout); | |
7001 | ||
7002 | return; | |
7003 | case '*': /* Run length encoding. */ | |
7004 | /* Discard the repeat count. */ | |
7005 | c = readchar (remote_timeout); | |
7006 | if (c < 0) | |
7007 | return; | |
7008 | break; | |
7009 | default: | |
7010 | /* A regular character. */ | |
7011 | break; | |
7012 | } | |
7013 | } | |
7014 | } | |
7015 | ||
c906108c | 7016 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
7017 | into *BUF, verifying the checksum, length, and handling run-length |
7018 | compression. NUL terminate the buffer. If there is not enough room, | |
7019 | expand *BUF using xrealloc. | |
c906108c | 7020 | |
c2d11a7d JM |
7021 | Returns -1 on error, number of characters in buffer (ignoring the |
7022 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 7023 | SERIAL status indications). */ |
c2d11a7d JM |
7024 | |
7025 | static long | |
6d820c5c DJ |
7026 | read_frame (char **buf_p, |
7027 | long *sizeof_buf) | |
c906108c SS |
7028 | { |
7029 | unsigned char csum; | |
c2d11a7d | 7030 | long bc; |
c906108c | 7031 | int c; |
6d820c5c | 7032 | char *buf = *buf_p; |
a6f3e723 | 7033 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7034 | |
7035 | csum = 0; | |
c2d11a7d | 7036 | bc = 0; |
c906108c SS |
7037 | |
7038 | while (1) | |
7039 | { | |
7040 | c = readchar (remote_timeout); | |
c906108c SS |
7041 | switch (c) |
7042 | { | |
7043 | case SERIAL_TIMEOUT: | |
7044 | if (remote_debug) | |
0f71a2f6 | 7045 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7046 | return -1; |
c906108c SS |
7047 | case '$': |
7048 | if (remote_debug) | |
0f71a2f6 JM |
7049 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7050 | gdb_stdlog); | |
23860348 | 7051 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7052 | case '#': |
7053 | { | |
7054 | unsigned char pktcsum; | |
e1b09194 AC |
7055 | int check_0 = 0; |
7056 | int check_1 = 0; | |
c906108c | 7057 | |
c2d11a7d | 7058 | buf[bc] = '\0'; |
c906108c | 7059 | |
e1b09194 AC |
7060 | check_0 = readchar (remote_timeout); |
7061 | if (check_0 >= 0) | |
7062 | check_1 = readchar (remote_timeout); | |
802188a7 | 7063 | |
e1b09194 AC |
7064 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7065 | { | |
7066 | if (remote_debug) | |
2bc416ba | 7067 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7068 | gdb_stdlog); |
e1b09194 AC |
7069 | return -1; |
7070 | } | |
7071 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7072 | { |
7073 | if (remote_debug) | |
2bc416ba | 7074 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7075 | gdb_stdlog); |
40e3f985 FN |
7076 | return -1; |
7077 | } | |
c906108c | 7078 | |
a6f3e723 SL |
7079 | /* Don't recompute the checksum; with no ack packets we |
7080 | don't have any way to indicate a packet retransmission | |
7081 | is necessary. */ | |
7082 | if (rs->noack_mode) | |
7083 | return bc; | |
7084 | ||
e1b09194 | 7085 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7086 | if (csum == pktcsum) |
c2d11a7d | 7087 | return bc; |
c906108c | 7088 | |
c5aa993b | 7089 | if (remote_debug) |
c906108c | 7090 | { |
6e5abd65 PA |
7091 | struct cleanup *old_chain; |
7092 | char *str; | |
7093 | ||
7094 | str = escape_buffer (buf, bc); | |
7095 | old_chain = make_cleanup (xfree, str); | |
7096 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7097 | "Bad checksum, sentsum=0x%x, " |
7098 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7099 | pktcsum, csum, str); |
7100 | do_cleanups (old_chain); | |
c906108c | 7101 | } |
c2d11a7d | 7102 | /* Number of characters in buffer ignoring trailing |
23860348 | 7103 | NULL. */ |
c2d11a7d | 7104 | return -1; |
c906108c | 7105 | } |
23860348 | 7106 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7107 | { |
7108 | int repeat; | |
c906108c | 7109 | |
a744cf53 | 7110 | csum += c; |
b4501125 AC |
7111 | c = readchar (remote_timeout); |
7112 | csum += c; | |
23860348 | 7113 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7114 | |
23860348 | 7115 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7116 | |
6d820c5c | 7117 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7118 | { |
6d820c5c DJ |
7119 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7120 | { | |
7121 | /* Make some more room in the buffer. */ | |
7122 | *sizeof_buf += repeat; | |
7123 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7124 | buf = *buf_p; | |
7125 | } | |
7126 | ||
c2d11a7d JM |
7127 | memset (&buf[bc], buf[bc - 1], repeat); |
7128 | bc += repeat; | |
c2c6d25f JM |
7129 | continue; |
7130 | } | |
7131 | ||
c2d11a7d | 7132 | buf[bc] = '\0'; |
6d820c5c | 7133 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7134 | return -1; |
c2c6d25f | 7135 | } |
c906108c | 7136 | default: |
6d820c5c | 7137 | if (bc >= *sizeof_buf - 1) |
c906108c | 7138 | { |
6d820c5c DJ |
7139 | /* Make some more room in the buffer. */ |
7140 | *sizeof_buf *= 2; | |
7141 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7142 | buf = *buf_p; | |
c906108c SS |
7143 | } |
7144 | ||
6d820c5c DJ |
7145 | buf[bc++] = c; |
7146 | csum += c; | |
7147 | continue; | |
c906108c SS |
7148 | } |
7149 | } | |
7150 | } | |
7151 | ||
7152 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7153 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7154 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7155 | rather than timing out; this is used (in synchronous mode) to wait | |
7156 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7157 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7158 | don't have to change all the calls to getpkt to deal with the | |
7159 | return value, because at the moment I don't know what the right | |
23860348 | 7160 | thing to do it for those. */ |
c906108c | 7161 | void |
6d820c5c DJ |
7162 | getpkt (char **buf, |
7163 | long *sizeof_buf, | |
c2d11a7d | 7164 | int forever) |
d9fcf2fb JM |
7165 | { |
7166 | int timed_out; | |
7167 | ||
7168 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7169 | } | |
7170 | ||
7171 | ||
7172 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7173 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7174 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7175 | rather than timing out; this is used (in synchronous mode) to wait | |
7176 | for a target that is is executing user code to stop. If FOREVER == | |
7177 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7178 | indication of this to the caller. Otherwise return the number of |
7179 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7180 | enough reason to return to the caller. */ | |
7181 | ||
3172dc30 | 7182 | static int |
74531fed PA |
7183 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7184 | int expecting_notif) | |
c906108c | 7185 | { |
2d717e4f | 7186 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7187 | int c; |
7188 | int tries; | |
7189 | int timeout; | |
df4b58fe | 7190 | int val = -1; |
c906108c | 7191 | |
2d717e4f DJ |
7192 | /* We're reading a new response. Make sure we don't look at a |
7193 | previously cached response. */ | |
7194 | rs->cached_wait_status = 0; | |
7195 | ||
6d820c5c | 7196 | strcpy (*buf, "timeout"); |
c906108c SS |
7197 | |
7198 | if (forever) | |
74531fed PA |
7199 | timeout = watchdog > 0 ? watchdog : -1; |
7200 | else if (expecting_notif) | |
7201 | timeout = 0; /* There should already be a char in the buffer. If | |
7202 | not, bail out. */ | |
c906108c SS |
7203 | else |
7204 | timeout = remote_timeout; | |
7205 | ||
7206 | #define MAX_TRIES 3 | |
7207 | ||
74531fed PA |
7208 | /* Process any number of notifications, and then return when |
7209 | we get a packet. */ | |
7210 | for (;;) | |
c906108c | 7211 | { |
74531fed PA |
7212 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7213 | times. */ | |
7214 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7215 | { |
74531fed PA |
7216 | /* This can loop forever if the remote side sends us |
7217 | characters continuously, but if it pauses, we'll get | |
7218 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7219 | we'll count that as a retry. | |
7220 | ||
7221 | Note that even when forever is set, we will only wait | |
7222 | forever prior to the start of a packet. After that, we | |
7223 | expect characters to arrive at a brisk pace. They should | |
7224 | show up within remote_timeout intervals. */ | |
7225 | do | |
7226 | c = readchar (timeout); | |
7227 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7228 | |
7229 | if (c == SERIAL_TIMEOUT) | |
7230 | { | |
74531fed PA |
7231 | if (expecting_notif) |
7232 | return -1; /* Don't complain, it's normal to not get | |
7233 | anything in this case. */ | |
7234 | ||
23860348 | 7235 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7236 | { |
2acceee2 | 7237 | QUIT; |
ce5ce7ed | 7238 | pop_target (); |
489eaeba | 7239 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7240 | } |
c906108c | 7241 | if (remote_debug) |
0f71a2f6 | 7242 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7243 | } |
74531fed PA |
7244 | else |
7245 | { | |
7246 | /* We've found the start of a packet or notification. | |
7247 | Now collect the data. */ | |
7248 | val = read_frame (buf, sizeof_buf); | |
7249 | if (val >= 0) | |
7250 | break; | |
7251 | } | |
7252 | ||
7253 | serial_write (remote_desc, "-", 1); | |
c906108c | 7254 | } |
c906108c | 7255 | |
74531fed PA |
7256 | if (tries > MAX_TRIES) |
7257 | { | |
7258 | /* We have tried hard enough, and just can't receive the | |
7259 | packet/notification. Give up. */ | |
7260 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7261 | |
74531fed PA |
7262 | /* Skip the ack char if we're in no-ack mode. */ |
7263 | if (!rs->noack_mode) | |
7264 | serial_write (remote_desc, "+", 1); | |
7265 | return -1; | |
7266 | } | |
c906108c | 7267 | |
74531fed PA |
7268 | /* If we got an ordinary packet, return that to our caller. */ |
7269 | if (c == '$') | |
c906108c SS |
7270 | { |
7271 | if (remote_debug) | |
43e526b9 | 7272 | { |
6e5abd65 PA |
7273 | struct cleanup *old_chain; |
7274 | char *str; | |
7275 | ||
7276 | str = escape_buffer (*buf, val); | |
7277 | old_chain = make_cleanup (xfree, str); | |
7278 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7279 | do_cleanups (old_chain); | |
43e526b9 | 7280 | } |
a6f3e723 SL |
7281 | |
7282 | /* Skip the ack char if we're in no-ack mode. */ | |
7283 | if (!rs->noack_mode) | |
7284 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7285 | return val; |
c906108c SS |
7286 | } |
7287 | ||
74531fed PA |
7288 | /* If we got a notification, handle it, and go back to looking |
7289 | for a packet. */ | |
7290 | else | |
7291 | { | |
7292 | gdb_assert (c == '%'); | |
7293 | ||
7294 | if (remote_debug) | |
7295 | { | |
6e5abd65 PA |
7296 | struct cleanup *old_chain; |
7297 | char *str; | |
7298 | ||
7299 | str = escape_buffer (*buf, val); | |
7300 | old_chain = make_cleanup (xfree, str); | |
7301 | fprintf_unfiltered (gdb_stdlog, | |
7302 | " Notification received: %s\n", | |
7303 | str); | |
7304 | do_cleanups (old_chain); | |
74531fed | 7305 | } |
c906108c | 7306 | |
74531fed | 7307 | handle_notification (*buf, val); |
c906108c | 7308 | |
74531fed | 7309 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7310 | |
74531fed PA |
7311 | if (expecting_notif) |
7312 | return -1; | |
7313 | } | |
7314 | } | |
7315 | } | |
7316 | ||
7317 | static int | |
7318 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7319 | { | |
7320 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7321 | } | |
7322 | ||
7323 | static int | |
7324 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7325 | { | |
7326 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7327 | } |
74531fed | 7328 | |
c906108c SS |
7329 | \f |
7330 | static void | |
7d85a9c0 | 7331 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7332 | { |
23860348 MS |
7333 | /* Use catch_errors so the user can quit from gdb even when we |
7334 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 7335 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7336 | |
7337 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7338 | we do or not. For the existing stubs, kill is a noop. */ | |
7339 | target_mourn_inferior (); | |
7340 | } | |
7341 | ||
82f73884 PA |
7342 | static int |
7343 | remote_vkill (int pid, struct remote_state *rs) | |
7344 | { | |
7345 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7346 | return -1; | |
7347 | ||
7348 | /* Tell the remote target to detach. */ | |
7349 | sprintf (rs->buf, "vKill;%x", pid); | |
7350 | putpkt (rs->buf); | |
7351 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7352 | ||
7353 | if (packet_ok (rs->buf, | |
7354 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7355 | return 0; | |
7356 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7357 | return -1; | |
7358 | else | |
7359 | return 1; | |
7360 | } | |
7361 | ||
7362 | static void | |
7d85a9c0 | 7363 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7364 | { |
7365 | int res; | |
7366 | int pid = ptid_get_pid (inferior_ptid); | |
7367 | struct remote_state *rs = get_remote_state (); | |
7368 | ||
7369 | res = remote_vkill (pid, rs); | |
7370 | if (res == -1 && !remote_multi_process_p (rs)) | |
7371 | { | |
7372 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7373 | to specify the pid. */ | |
7374 | ||
7375 | putpkt ("k"); | |
7376 | #if 0 | |
7377 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7378 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7379 | res = 1; | |
7380 | #else | |
7381 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7382 | we do or not. For the existing stubs, kill is a noop. */ | |
7383 | res = 0; | |
7384 | #endif | |
7385 | } | |
7386 | ||
7387 | if (res != 0) | |
7388 | error (_("Can't kill process")); | |
7389 | ||
82f73884 PA |
7390 | target_mourn_inferior (); |
7391 | } | |
7392 | ||
c906108c | 7393 | static void |
136d6dae | 7394 | remote_mourn (struct target_ops *ops) |
c906108c | 7395 | { |
136d6dae | 7396 | remote_mourn_1 (ops); |
c906108c SS |
7397 | } |
7398 | ||
c906108c SS |
7399 | /* Worker function for remote_mourn. */ |
7400 | static void | |
fba45db2 | 7401 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7402 | { |
7403 | unpush_target (target); | |
ce5ce7ed | 7404 | |
8a2492ee PA |
7405 | /* remote_close takes care of doing most of the clean up. */ |
7406 | generic_mourn_inferior (); | |
c906108c SS |
7407 | } |
7408 | ||
2d717e4f DJ |
7409 | static void |
7410 | extended_remote_mourn_1 (struct target_ops *target) | |
7411 | { | |
7412 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7413 | |
e24a49d8 PA |
7414 | /* In case we got here due to an error, but we're going to stay |
7415 | connected. */ | |
7416 | rs->waiting_for_stop_reply = 0; | |
7417 | ||
74531fed PA |
7418 | /* We're no longer interested in these events. */ |
7419 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7420 | ||
dc1981d7 PA |
7421 | /* If the current general thread belonged to the process we just |
7422 | detached from or has exited, the remote side current general | |
7423 | thread becomes undefined. Considering a case like this: | |
7424 | ||
7425 | - We just got here due to a detach. | |
7426 | - The process that we're detaching from happens to immediately | |
7427 | report a global breakpoint being hit in non-stop mode, in the | |
7428 | same thread we had selected before. | |
7429 | - GDB attaches to this process again. | |
7430 | - This event happens to be the next event we handle. | |
7431 | ||
7432 | GDB would consider that the current general thread didn't need to | |
7433 | be set on the stub side (with Hg), since for all it knew, | |
7434 | GENERAL_THREAD hadn't changed. | |
7435 | ||
7436 | Notice that although in all-stop mode, the remote server always | |
7437 | sets the current thread to the thread reporting the stop event, | |
7438 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7439 | not* change the current thread when reporting a breakpoint hit, | |
7440 | due to the decoupling of event reporting and event handling. | |
7441 | ||
7442 | To keep things simple, we always invalidate our notion of the | |
7443 | current thread. */ | |
7444 | record_currthread (minus_one_ptid); | |
7445 | ||
2d717e4f DJ |
7446 | /* Unlike "target remote", we do not want to unpush the target; then |
7447 | the next time the user says "run", we won't be connected. */ | |
7448 | ||
48aa3c27 PA |
7449 | /* Call common code to mark the inferior as not running. */ |
7450 | generic_mourn_inferior (); | |
7451 | ||
d729566a | 7452 | if (!have_inferiors ()) |
2d717e4f | 7453 | { |
82f73884 PA |
7454 | if (!remote_multi_process_p (rs)) |
7455 | { | |
7456 | /* Check whether the target is running now - some remote stubs | |
7457 | automatically restart after kill. */ | |
7458 | putpkt ("?"); | |
7459 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7460 | ||
7461 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7462 | { | |
3e43a32a MS |
7463 | /* Assume that the target has been restarted. Set |
7464 | inferior_ptid so that bits of core GDB realizes | |
7465 | there's something here, e.g., so that the user can | |
7466 | say "kill" again. */ | |
82f73884 PA |
7467 | inferior_ptid = magic_null_ptid; |
7468 | } | |
82f73884 | 7469 | } |
2d717e4f DJ |
7470 | } |
7471 | } | |
c906108c SS |
7472 | |
7473 | static void | |
136d6dae | 7474 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7475 | { |
136d6dae | 7476 | extended_remote_mourn_1 (ops); |
2d717e4f | 7477 | } |
c906108c | 7478 | |
2d717e4f DJ |
7479 | static int |
7480 | extended_remote_run (char *args) | |
7481 | { | |
7482 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7483 | int len; |
c906108c | 7484 | |
2d717e4f DJ |
7485 | /* If the user has disabled vRun support, or we have detected that |
7486 | support is not available, do not try it. */ | |
7487 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7488 | return -1; | |
424163ea | 7489 | |
2d717e4f DJ |
7490 | strcpy (rs->buf, "vRun;"); |
7491 | len = strlen (rs->buf); | |
c906108c | 7492 | |
2d717e4f DJ |
7493 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7494 | error (_("Remote file name too long for run packet")); | |
7495 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7496 | ||
d1a41061 | 7497 | gdb_assert (args != NULL); |
2d717e4f DJ |
7498 | if (*args) |
7499 | { | |
7500 | struct cleanup *back_to; | |
7501 | int i; | |
7502 | char **argv; | |
7503 | ||
d1a41061 | 7504 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7505 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7506 | for (i = 0; argv[i] != NULL; i++) | |
7507 | { | |
7508 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7509 | error (_("Argument list too long for run packet")); | |
7510 | rs->buf[len++] = ';'; | |
7511 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7512 | } | |
7513 | do_cleanups (back_to); | |
7514 | } | |
7515 | ||
7516 | rs->buf[len++] = '\0'; | |
7517 | ||
7518 | putpkt (rs->buf); | |
7519 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7520 | ||
7521 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7522 | { | |
7523 | /* We have a wait response; we don't need it, though. All is well. */ | |
7524 | return 0; | |
7525 | } | |
7526 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7527 | /* It wasn't disabled before, but it is now. */ | |
7528 | return -1; | |
7529 | else | |
7530 | { | |
7531 | if (remote_exec_file[0] == '\0') | |
7532 | error (_("Running the default executable on the remote target failed; " | |
7533 | "try \"set remote exec-file\"?")); | |
7534 | else | |
7535 | error (_("Running \"%s\" on the remote target failed"), | |
7536 | remote_exec_file); | |
7537 | } | |
c906108c SS |
7538 | } |
7539 | ||
2d717e4f DJ |
7540 | /* In the extended protocol we want to be able to do things like |
7541 | "run" and have them basically work as expected. So we need | |
7542 | a special create_inferior function. We support changing the | |
7543 | executable file and the command line arguments, but not the | |
7544 | environment. */ | |
7545 | ||
43ff13b4 | 7546 | static void |
2d717e4f | 7547 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7548 | char **env, int from_tty) |
43ff13b4 | 7549 | { |
43ff13b4 | 7550 | /* If running asynchronously, register the target file descriptor |
23860348 | 7551 | with the event loop. */ |
75c99385 | 7552 | if (target_can_async_p ()) |
2acceee2 | 7553 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
7554 | |
7555 | /* Now restart the remote server. */ | |
2d717e4f DJ |
7556 | if (extended_remote_run (args) == -1) |
7557 | { | |
7558 | /* vRun was not supported. Fail if we need it to do what the | |
7559 | user requested. */ | |
7560 | if (remote_exec_file[0]) | |
7561 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7562 | if (args[0]) | |
7563 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7564 | |
2d717e4f DJ |
7565 | /* Fall back to "R". */ |
7566 | extended_remote_restart (); | |
7567 | } | |
424163ea | 7568 | |
6c95b8df PA |
7569 | if (!have_inferiors ()) |
7570 | { | |
7571 | /* Clean up from the last time we ran, before we mark the target | |
7572 | running again. This will mark breakpoints uninserted, and | |
7573 | get_offsets may insert breakpoints. */ | |
7574 | init_thread_list (); | |
7575 | init_wait_for_inferior (); | |
7576 | } | |
45280a52 | 7577 | |
2d717e4f | 7578 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 7579 | inferior_ptid = magic_null_ptid; |
c0a2216e | 7580 | |
74531fed PA |
7581 | /* Now, if we have thread information, update inferior_ptid. */ |
7582 | inferior_ptid = remote_current_thread (inferior_ptid); | |
7583 | ||
0b16c5cf | 7584 | remote_add_inferior (ptid_get_pid (inferior_ptid), 0); |
c0a2216e PA |
7585 | add_thread_silent (inferior_ptid); |
7586 | ||
2d717e4f DJ |
7587 | /* Get updated offsets, if the stub uses qOffsets. */ |
7588 | get_offsets (); | |
2d717e4f DJ |
7589 | } |
7590 | ||
7591 | static void | |
136d6dae VP |
7592 | extended_remote_create_inferior (struct target_ops *ops, |
7593 | char *exec_file, char *args, | |
2d717e4f DJ |
7594 | char **env, int from_tty) |
7595 | { | |
75c99385 | 7596 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7597 | } |
c906108c | 7598 | \f |
c5aa993b | 7599 | |
8181d85f DJ |
7600 | /* Insert a breakpoint. On targets that have software breakpoint |
7601 | support, we ask the remote target to do the work; on targets | |
7602 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7603 | |
7604 | static int | |
a6d9a66e UW |
7605 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7606 | struct bp_target_info *bp_tgt) | |
c906108c | 7607 | { |
d471ea57 AC |
7608 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7609 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7610 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7611 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7612 | |
444abaca | 7613 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7614 | { |
7c0f6dcc | 7615 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7616 | struct remote_state *rs; |
7617 | char *p; | |
7c0f6dcc | 7618 | int bpsize; |
4fff2411 | 7619 | |
a1dcb23a | 7620 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7621 | |
7622 | rs = get_remote_state (); | |
7623 | p = rs->buf; | |
802188a7 | 7624 | |
96baa820 JM |
7625 | *(p++) = 'Z'; |
7626 | *(p++) = '0'; | |
7627 | *(p++) = ','; | |
7c0f6dcc | 7628 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7629 | p += hexnumstr (p, addr); |
7c0f6dcc | 7630 | sprintf (p, ",%d", bpsize); |
802188a7 | 7631 | |
6d820c5c DJ |
7632 | putpkt (rs->buf); |
7633 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7634 | |
6d820c5c | 7635 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7636 | { |
d471ea57 AC |
7637 | case PACKET_ERROR: |
7638 | return -1; | |
7639 | case PACKET_OK: | |
7c0f6dcc JL |
7640 | bp_tgt->placed_address = addr; |
7641 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7642 | return 0; |
7643 | case PACKET_UNKNOWN: | |
7644 | break; | |
96baa820 JM |
7645 | } |
7646 | } | |
c906108c | 7647 | |
a6d9a66e | 7648 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7649 | } |
7650 | ||
7651 | static int | |
a6d9a66e UW |
7652 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7653 | struct bp_target_info *bp_tgt) | |
c906108c | 7654 | { |
8181d85f | 7655 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7656 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7657 | |
444abaca | 7658 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7659 | { |
6d820c5c | 7660 | char *p = rs->buf; |
802188a7 | 7661 | |
96baa820 JM |
7662 | *(p++) = 'z'; |
7663 | *(p++) = '0'; | |
7664 | *(p++) = ','; | |
7665 | ||
8181d85f DJ |
7666 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7667 | p += hexnumstr (p, addr); | |
7668 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7669 | |
6d820c5c DJ |
7670 | putpkt (rs->buf); |
7671 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7672 | |
6d820c5c | 7673 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7674 | } |
7675 | ||
a6d9a66e | 7676 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7677 | } |
7678 | ||
d471ea57 AC |
7679 | static int |
7680 | watchpoint_to_Z_packet (int type) | |
7681 | { | |
7682 | switch (type) | |
7683 | { | |
7684 | case hw_write: | |
bb858e6a | 7685 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7686 | break; |
7687 | case hw_read: | |
bb858e6a | 7688 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7689 | break; |
7690 | case hw_access: | |
bb858e6a | 7691 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7692 | break; |
7693 | default: | |
8e65ff28 | 7694 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7695 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7696 | } |
7697 | } | |
7698 | ||
3c3bea1c | 7699 | static int |
0cf6dd15 TJB |
7700 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7701 | struct expression *cond) | |
96baa820 | 7702 | { |
d01949b6 | 7703 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7704 | char *p; |
d471ea57 | 7705 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7706 | |
444abaca | 7707 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7708 | return 1; |
802188a7 | 7709 | |
6d820c5c DJ |
7710 | sprintf (rs->buf, "Z%x,", packet); |
7711 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7712 | addr = remote_address_masked (addr); |
7713 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7714 | sprintf (p, ",%x", len); |
802188a7 | 7715 | |
6d820c5c DJ |
7716 | putpkt (rs->buf); |
7717 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7718 | |
6d820c5c | 7719 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7720 | { |
7721 | case PACKET_ERROR: | |
d471ea57 | 7722 | return -1; |
85d721b8 PA |
7723 | case PACKET_UNKNOWN: |
7724 | return 1; | |
d471ea57 AC |
7725 | case PACKET_OK: |
7726 | return 0; | |
7727 | } | |
8e65ff28 | 7728 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7729 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7730 | } |
7731 | ||
d471ea57 | 7732 | |
3c3bea1c | 7733 | static int |
0cf6dd15 TJB |
7734 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type, |
7735 | struct expression *cond) | |
96baa820 | 7736 | { |
d01949b6 | 7737 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7738 | char *p; |
d471ea57 AC |
7739 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7740 | ||
444abaca | 7741 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 7742 | return -1; |
802188a7 | 7743 | |
6d820c5c DJ |
7744 | sprintf (rs->buf, "z%x,", packet); |
7745 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7746 | addr = remote_address_masked (addr); |
7747 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7748 | sprintf (p, ",%x", len); |
6d820c5c DJ |
7749 | putpkt (rs->buf); |
7750 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7751 | |
6d820c5c | 7752 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7753 | { |
7754 | case PACKET_ERROR: | |
7755 | case PACKET_UNKNOWN: | |
7756 | return -1; | |
7757 | case PACKET_OK: | |
7758 | return 0; | |
7759 | } | |
8e65ff28 | 7760 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7761 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7762 | } |
7763 | ||
3c3bea1c | 7764 | |
501eef12 | 7765 | int remote_hw_watchpoint_limit = -1; |
480a3f21 | 7766 | int remote_hw_watchpoint_length_limit = -1; |
501eef12 | 7767 | int remote_hw_breakpoint_limit = -1; |
d471ea57 | 7768 | |
480a3f21 PW |
7769 | static int |
7770 | remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
7771 | { | |
7772 | if (remote_hw_watchpoint_length_limit == 0) | |
7773 | return 0; | |
7774 | else if (remote_hw_watchpoint_length_limit < 0) | |
7775 | return 1; | |
7776 | else if (len <= remote_hw_watchpoint_length_limit) | |
7777 | return 1; | |
7778 | else | |
7779 | return 0; | |
7780 | } | |
7781 | ||
b9362cc7 | 7782 | static int |
3c3bea1c | 7783 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7784 | { |
3c3bea1c GS |
7785 | if (type == bp_hardware_breakpoint) |
7786 | { | |
7787 | if (remote_hw_breakpoint_limit == 0) | |
7788 | return 0; | |
501eef12 AC |
7789 | else if (remote_hw_breakpoint_limit < 0) |
7790 | return 1; | |
3c3bea1c GS |
7791 | else if (cnt <= remote_hw_breakpoint_limit) |
7792 | return 1; | |
7793 | } | |
7794 | else | |
7795 | { | |
7796 | if (remote_hw_watchpoint_limit == 0) | |
7797 | return 0; | |
501eef12 AC |
7798 | else if (remote_hw_watchpoint_limit < 0) |
7799 | return 1; | |
3c3bea1c GS |
7800 | else if (ot) |
7801 | return -1; | |
7802 | else if (cnt <= remote_hw_watchpoint_limit) | |
7803 | return 1; | |
7804 | } | |
7805 | return -1; | |
7806 | } | |
7807 | ||
b9362cc7 | 7808 | static int |
3c3bea1c GS |
7809 | remote_stopped_by_watchpoint (void) |
7810 | { | |
82f73884 | 7811 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7812 | } |
7813 | ||
4aa7a7f5 JJ |
7814 | static int |
7815 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7816 | { |
4aa7a7f5 | 7817 | int rc = 0; |
a744cf53 | 7818 | |
d983da9c | 7819 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7820 | { |
7821 | *addr_p = remote_watch_data_address; | |
7822 | rc = 1; | |
7823 | } | |
7824 | ||
7825 | return rc; | |
3c3bea1c GS |
7826 | } |
7827 | ||
7828 | ||
7829 | static int | |
a6d9a66e UW |
7830 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
7831 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 7832 | { |
8181d85f | 7833 | CORE_ADDR addr; |
4fff2411 JZ |
7834 | struct remote_state *rs; |
7835 | char *p; | |
802188a7 | 7836 | |
c8189ed1 | 7837 | /* The length field should be set to the size of a breakpoint |
8181d85f | 7838 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 7839 | |
a1dcb23a | 7840 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 7841 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 7842 | |
444abaca | 7843 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7844 | return -1; |
2bc416ba | 7845 | |
4fff2411 JZ |
7846 | rs = get_remote_state (); |
7847 | p = rs->buf; | |
7848 | ||
96baa820 JM |
7849 | *(p++) = 'Z'; |
7850 | *(p++) = '1'; | |
7851 | *(p++) = ','; | |
802188a7 | 7852 | |
8181d85f | 7853 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7854 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7855 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7856 | |
6d820c5c DJ |
7857 | putpkt (rs->buf); |
7858 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7859 | |
6d820c5c | 7860 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7861 | { |
7862 | case PACKET_ERROR: | |
7863 | case PACKET_UNKNOWN: | |
7864 | return -1; | |
7865 | case PACKET_OK: | |
7866 | return 0; | |
7867 | } | |
8e65ff28 | 7868 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7869 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
7870 | } |
7871 | ||
d471ea57 | 7872 | |
802188a7 | 7873 | static int |
a6d9a66e UW |
7874 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
7875 | struct bp_target_info *bp_tgt) | |
96baa820 | 7876 | { |
8181d85f | 7877 | CORE_ADDR addr; |
d01949b6 | 7878 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 7879 | char *p = rs->buf; |
c8189ed1 | 7880 | |
444abaca | 7881 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7882 | return -1; |
802188a7 | 7883 | |
96baa820 JM |
7884 | *(p++) = 'z'; |
7885 | *(p++) = '1'; | |
7886 | *(p++) = ','; | |
802188a7 | 7887 | |
8181d85f | 7888 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7889 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7890 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7891 | |
6d820c5c DJ |
7892 | putpkt (rs->buf); |
7893 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 7894 | |
6d820c5c | 7895 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7896 | { |
7897 | case PACKET_ERROR: | |
7898 | case PACKET_UNKNOWN: | |
7899 | return -1; | |
7900 | case PACKET_OK: | |
7901 | return 0; | |
7902 | } | |
8e65ff28 | 7903 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7904 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 7905 | } |
96baa820 | 7906 | |
23860348 | 7907 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 7908 | |
c5aa993b JM |
7909 | static unsigned long crc32_table[256] = |
7910 | {0, 0}; | |
c906108c SS |
7911 | |
7912 | static unsigned long | |
4a5e7a5b | 7913 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 7914 | { |
c5aa993b | 7915 | if (!crc32_table[1]) |
c906108c | 7916 | { |
23860348 | 7917 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
7918 | int i, j; |
7919 | unsigned int c; | |
7920 | ||
7921 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
7922 | { |
7923 | for (c = i << 24, j = 8; j > 0; --j) | |
7924 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
7925 | crc32_table[i] = c; | |
7926 | } | |
c906108c SS |
7927 | } |
7928 | ||
7929 | while (len--) | |
7930 | { | |
7931 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
7932 | buf++; | |
7933 | } | |
7934 | return crc; | |
7935 | } | |
7936 | ||
4a5e7a5b PA |
7937 | /* Verify memory using the "qCRC:" request. */ |
7938 | ||
7939 | static int | |
7940 | remote_verify_memory (struct target_ops *ops, | |
7941 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
7942 | { | |
7943 | struct remote_state *rs = get_remote_state (); | |
7944 | unsigned long host_crc, target_crc; | |
7945 | char *tmp; | |
7946 | ||
7947 | /* FIXME: assumes lma can fit into long. */ | |
7948 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
7949 | (long) lma, (long) size); | |
7950 | putpkt (rs->buf); | |
7951 | ||
7952 | /* Be clever; compute the host_crc before waiting for target | |
7953 | reply. */ | |
7954 | host_crc = crc32 (data, size, 0xffffffff); | |
7955 | ||
7956 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7957 | if (rs->buf[0] == 'E') | |
7958 | return -1; | |
7959 | ||
7960 | if (rs->buf[0] != 'C') | |
7961 | error (_("remote target does not support this operation")); | |
7962 | ||
7963 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
7964 | target_crc = target_crc * 16 + fromhex (*tmp); | |
7965 | ||
7966 | return (host_crc == target_crc); | |
7967 | } | |
7968 | ||
c906108c SS |
7969 | /* compare-sections command |
7970 | ||
7971 | With no arguments, compares each loadable section in the exec bfd | |
7972 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 7973 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 7974 | |
c906108c | 7975 | static void |
fba45db2 | 7976 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
7977 | { |
7978 | asection *s; | |
c906108c | 7979 | struct cleanup *old_chain; |
085dd6e6 | 7980 | char *sectdata; |
ce359b09 | 7981 | const char *sectname; |
c906108c SS |
7982 | bfd_size_type size; |
7983 | bfd_vma lma; | |
7984 | int matched = 0; | |
7985 | int mismatched = 0; | |
4a5e7a5b | 7986 | int res; |
c906108c SS |
7987 | |
7988 | if (!exec_bfd) | |
8a3fe4f8 | 7989 | error (_("command cannot be used without an exec file")); |
c906108c | 7990 | |
c5aa993b | 7991 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
7992 | { |
7993 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 7994 | continue; /* Skip non-loadable section. */ |
c906108c | 7995 | |
2c500098 | 7996 | size = bfd_get_section_size (s); |
c906108c | 7997 | if (size == 0) |
0df8b418 | 7998 | continue; /* Skip zero-length section. */ |
c906108c | 7999 | |
ce359b09 | 8000 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 8001 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 8002 | continue; /* Not the section selected by user. */ |
c906108c | 8003 | |
0df8b418 | 8004 | matched = 1; /* Do this section. */ |
c906108c | 8005 | lma = s->lma; |
c906108c | 8006 | |
c906108c | 8007 | sectdata = xmalloc (size); |
b8c9b27d | 8008 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 8009 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 8010 | |
4a5e7a5b PA |
8011 | res = target_verify_memory (sectdata, lma, size); |
8012 | ||
8013 | if (res == -1) | |
5af949e3 UW |
8014 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
8015 | paddress (target_gdbarch, lma), | |
8016 | paddress (target_gdbarch, lma + size)); | |
c906108c | 8017 | |
5af949e3 UW |
8018 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
8019 | paddress (target_gdbarch, lma), | |
8020 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 8021 | if (res) |
c906108c SS |
8022 | printf_filtered ("matched.\n"); |
8023 | else | |
c5aa993b JM |
8024 | { |
8025 | printf_filtered ("MIS-MATCHED!\n"); | |
8026 | mismatched++; | |
8027 | } | |
c906108c SS |
8028 | |
8029 | do_cleanups (old_chain); | |
8030 | } | |
8031 | if (mismatched > 0) | |
8a3fe4f8 AC |
8032 | warning (_("One or more sections of the remote executable does not match\n\ |
8033 | the loaded file\n")); | |
c906108c | 8034 | if (args && !matched) |
a3f17187 | 8035 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
8036 | } |
8037 | ||
0e7f50da UW |
8038 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
8039 | into remote target. The number of bytes written to the remote | |
8040 | target is returned, or -1 for error. */ | |
8041 | ||
8042 | static LONGEST | |
8043 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
8044 | const char *annex, const gdb_byte *writebuf, | |
8045 | ULONGEST offset, LONGEST len, | |
8046 | struct packet_config *packet) | |
8047 | { | |
8048 | int i, buf_len; | |
8049 | ULONGEST n; | |
0e7f50da UW |
8050 | struct remote_state *rs = get_remote_state (); |
8051 | int max_size = get_memory_write_packet_size (); | |
8052 | ||
8053 | if (packet->support == PACKET_DISABLE) | |
8054 | return -1; | |
8055 | ||
8056 | /* Insert header. */ | |
8057 | i = snprintf (rs->buf, max_size, | |
8058 | "qXfer:%s:write:%s:%s:", | |
8059 | object_name, annex ? annex : "", | |
8060 | phex_nz (offset, sizeof offset)); | |
8061 | max_size -= (i + 1); | |
8062 | ||
8063 | /* Escape as much data as fits into rs->buf. */ | |
8064 | buf_len = remote_escape_output | |
8065 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8066 | ||
8067 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8068 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8069 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8070 | return -1; | |
8071 | ||
8072 | unpack_varlen_hex (rs->buf, &n); | |
8073 | return n; | |
8074 | } | |
8075 | ||
0876f84a DJ |
8076 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8077 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8078 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8079 | The number of bytes read may be less than LEN without indicating an | |
8080 | EOF. PACKET is checked and updated to indicate whether the remote | |
8081 | target supports this object. */ | |
8082 | ||
8083 | static LONGEST | |
8084 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8085 | const char *annex, | |
8086 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8087 | struct packet_config *packet) | |
8088 | { | |
8089 | static char *finished_object; | |
8090 | static char *finished_annex; | |
8091 | static ULONGEST finished_offset; | |
8092 | ||
8093 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8094 | LONGEST i, n, packet_len; |
8095 | ||
8096 | if (packet->support == PACKET_DISABLE) | |
8097 | return -1; | |
8098 | ||
8099 | /* Check whether we've cached an end-of-object packet that matches | |
8100 | this request. */ | |
8101 | if (finished_object) | |
8102 | { | |
8103 | if (strcmp (object_name, finished_object) == 0 | |
8104 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8105 | && offset == finished_offset) | |
8106 | return 0; | |
8107 | ||
8108 | /* Otherwise, we're now reading something different. Discard | |
8109 | the cache. */ | |
8110 | xfree (finished_object); | |
8111 | xfree (finished_annex); | |
8112 | finished_object = NULL; | |
8113 | finished_annex = NULL; | |
8114 | } | |
8115 | ||
8116 | /* Request only enough to fit in a single packet. The actual data | |
8117 | may not, since we don't know how much of it will need to be escaped; | |
8118 | the target is free to respond with slightly less data. We subtract | |
8119 | five to account for the response type and the protocol frame. */ | |
8120 | n = min (get_remote_packet_size () - 5, len); | |
8121 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8122 | object_name, annex ? annex : "", | |
8123 | phex_nz (offset, sizeof offset), | |
8124 | phex_nz (n, sizeof n)); | |
8125 | i = putpkt (rs->buf); | |
8126 | if (i < 0) | |
8127 | return -1; | |
8128 | ||
8129 | rs->buf[0] = '\0'; | |
8130 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8131 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8132 | return -1; | |
8133 | ||
8134 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8135 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8136 | ||
8137 | /* 'm' means there is (or at least might be) more data after this | |
8138 | batch. That does not make sense unless there's at least one byte | |
8139 | of data in this reply. */ | |
8140 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8141 | error (_("Remote qXfer reply contained no data.")); | |
8142 | ||
8143 | /* Got some data. */ | |
8144 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8145 | ||
8146 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8147 | or possibly empty. If we have the final block of a non-empty |
8148 | object, record this fact to bypass a subsequent partial read. */ | |
8149 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8150 | { |
8151 | finished_object = xstrdup (object_name); | |
8152 | finished_annex = xstrdup (annex ? annex : ""); | |
8153 | finished_offset = offset + i; | |
8154 | } | |
8155 | ||
8156 | return i; | |
8157 | } | |
8158 | ||
1e3ff5ad | 8159 | static LONGEST |
4b8a223f | 8160 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8161 | const char *annex, gdb_byte *readbuf, |
8162 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8163 | { |
82f73884 | 8164 | struct remote_state *rs; |
c906108c | 8165 | int i; |
6d820c5c | 8166 | char *p2; |
1e3ff5ad | 8167 | char query_type; |
c906108c | 8168 | |
e6e4e701 | 8169 | set_remote_traceframe (); |
82f73884 PA |
8170 | set_general_thread (inferior_ptid); |
8171 | ||
8172 | rs = get_remote_state (); | |
8173 | ||
b2182ed2 | 8174 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8175 | if (object == TARGET_OBJECT_MEMORY) |
8176 | { | |
8177 | int xfered; | |
a744cf53 | 8178 | |
21e3b9b9 DJ |
8179 | errno = 0; |
8180 | ||
2d717e4f DJ |
8181 | /* If the remote target is connected but not running, we should |
8182 | pass this request down to a lower stratum (e.g. the executable | |
8183 | file). */ | |
8184 | if (!target_has_execution) | |
8185 | return 0; | |
8186 | ||
21e3b9b9 | 8187 | if (writebuf != NULL) |
b2182ed2 | 8188 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8189 | else |
b2182ed2 | 8190 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8191 | |
8192 | if (xfered > 0) | |
8193 | return xfered; | |
8194 | else if (xfered == 0 && errno == 0) | |
8195 | return 0; | |
8196 | else | |
8197 | return -1; | |
8198 | } | |
8199 | ||
0df8b418 | 8200 | /* Handle SPU memory using qxfer packets. */ |
0e7f50da UW |
8201 | if (object == TARGET_OBJECT_SPU) |
8202 | { | |
8203 | if (readbuf) | |
8204 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8205 | &remote_protocol_packets | |
8206 | [PACKET_qXfer_spu_read]); | |
8207 | else | |
8208 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8209 | &remote_protocol_packets | |
8210 | [PACKET_qXfer_spu_write]); | |
8211 | } | |
8212 | ||
4aa995e1 PA |
8213 | /* Handle extra signal info using qxfer packets. */ |
8214 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8215 | { | |
8216 | if (readbuf) | |
8217 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8218 | &remote_protocol_packets | |
8219 | [PACKET_qXfer_siginfo_read]); | |
8220 | else | |
3e43a32a MS |
8221 | return remote_write_qxfer (ops, "siginfo", annex, |
8222 | writebuf, offset, len, | |
4aa995e1 PA |
8223 | &remote_protocol_packets |
8224 | [PACKET_qXfer_siginfo_write]); | |
8225 | } | |
8226 | ||
0fb4aa4b PA |
8227 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8228 | { | |
8229 | if (readbuf) | |
3e43a32a MS |
8230 | return remote_read_qxfer (ops, "statictrace", annex, |
8231 | readbuf, offset, len, | |
0fb4aa4b PA |
8232 | &remote_protocol_packets |
8233 | [PACKET_qXfer_statictrace_read]); | |
8234 | else | |
8235 | return -1; | |
8236 | } | |
8237 | ||
a76d924d DJ |
8238 | /* Only handle flash writes. */ |
8239 | if (writebuf != NULL) | |
8240 | { | |
8241 | LONGEST xfered; | |
8242 | ||
8243 | switch (object) | |
8244 | { | |
8245 | case TARGET_OBJECT_FLASH: | |
8246 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8247 | ||
8248 | if (xfered > 0) | |
8249 | return xfered; | |
8250 | else if (xfered == 0 && errno == 0) | |
8251 | return 0; | |
8252 | else | |
8253 | return -1; | |
8254 | ||
8255 | default: | |
8256 | return -1; | |
8257 | } | |
8258 | } | |
4b8a223f | 8259 | |
1e3ff5ad AC |
8260 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8261 | objects!!! Instead specify new query packets. */ | |
8262 | switch (object) | |
c906108c | 8263 | { |
1e3ff5ad AC |
8264 | case TARGET_OBJECT_AVR: |
8265 | query_type = 'R'; | |
8266 | break; | |
802188a7 RM |
8267 | |
8268 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8269 | gdb_assert (annex == NULL); |
8270 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8271 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8272 | |
23181151 DJ |
8273 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8274 | return remote_read_qxfer | |
8275 | (ops, "features", annex, readbuf, offset, len, | |
8276 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8277 | ||
cfa9d6d9 DJ |
8278 | case TARGET_OBJECT_LIBRARIES: |
8279 | return remote_read_qxfer | |
8280 | (ops, "libraries", annex, readbuf, offset, len, | |
8281 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8282 | ||
fd79ecee DJ |
8283 | case TARGET_OBJECT_MEMORY_MAP: |
8284 | gdb_assert (annex == NULL); | |
8285 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8286 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8287 | ||
07e059b5 VP |
8288 | case TARGET_OBJECT_OSDATA: |
8289 | /* Should only get here if we're connected. */ | |
8290 | gdb_assert (remote_desc); | |
8291 | return remote_read_qxfer | |
8292 | (ops, "osdata", annex, readbuf, offset, len, | |
8293 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8294 | ||
dc146f7c VP |
8295 | case TARGET_OBJECT_THREADS: |
8296 | gdb_assert (annex == NULL); | |
8297 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8298 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8299 | ||
b3b9301e PA |
8300 | case TARGET_OBJECT_TRACEFRAME_INFO: |
8301 | gdb_assert (annex == NULL); | |
8302 | return remote_read_qxfer | |
8303 | (ops, "traceframe-info", annex, readbuf, offset, len, | |
8304 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); | |
1e3ff5ad | 8305 | default: |
c906108c SS |
8306 | return -1; |
8307 | } | |
8308 | ||
4b8a223f | 8309 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8310 | buffer size. */ |
4b8a223f | 8311 | if (offset == 0 && len == 0) |
ea9c271d | 8312 | return (get_remote_packet_size ()); |
0df8b418 | 8313 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 8314 | large enough let the caller deal with it. */ |
ea9c271d | 8315 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8316 | return -1; |
ea9c271d | 8317 | len = get_remote_packet_size (); |
1e3ff5ad | 8318 | |
23860348 | 8319 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8320 | if (!remote_desc) |
8a3fe4f8 | 8321 | error (_("remote query is only available after target open")); |
c906108c | 8322 | |
1e3ff5ad | 8323 | gdb_assert (annex != NULL); |
4b8a223f | 8324 | gdb_assert (readbuf != NULL); |
c906108c | 8325 | |
6d820c5c | 8326 | p2 = rs->buf; |
c906108c SS |
8327 | *p2++ = 'q'; |
8328 | *p2++ = query_type; | |
8329 | ||
23860348 MS |
8330 | /* We used one buffer char for the remote protocol q command and |
8331 | another for the query type. As the remote protocol encapsulation | |
8332 | uses 4 chars plus one extra in case we are debugging | |
8333 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8334 | string. */ | |
c906108c | 8335 | i = 0; |
ea9c271d | 8336 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8337 | { |
1e3ff5ad AC |
8338 | /* Bad caller may have sent forbidden characters. */ |
8339 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8340 | *p2++ = annex[i]; | |
c906108c SS |
8341 | i++; |
8342 | } | |
1e3ff5ad AC |
8343 | *p2 = '\0'; |
8344 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8345 | |
6d820c5c | 8346 | i = putpkt (rs->buf); |
c5aa993b JM |
8347 | if (i < 0) |
8348 | return i; | |
c906108c | 8349 | |
6d820c5c DJ |
8350 | getpkt (&rs->buf, &rs->buf_size, 0); |
8351 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8352 | |
cfd77fa1 | 8353 | return strlen ((char *) readbuf); |
c906108c SS |
8354 | } |
8355 | ||
08388c79 DE |
8356 | static int |
8357 | remote_search_memory (struct target_ops* ops, | |
8358 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8359 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8360 | CORE_ADDR *found_addrp) | |
8361 | { | |
5af949e3 | 8362 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8363 | struct remote_state *rs = get_remote_state (); |
8364 | int max_size = get_memory_write_packet_size (); | |
8365 | struct packet_config *packet = | |
8366 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
8367 | /* Number of packet bytes used to encode the pattern; |
8368 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 8369 | int escaped_pattern_len; |
0df8b418 | 8370 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
8371 | int used_pattern_len; |
8372 | int i; | |
8373 | int found; | |
8374 | ULONGEST found_addr; | |
8375 | ||
8376 | /* Don't go to the target if we don't have to. | |
8377 | This is done before checking packet->support to avoid the possibility that | |
8378 | a success for this edge case means the facility works in general. */ | |
8379 | if (pattern_len > search_space_len) | |
8380 | return 0; | |
8381 | if (pattern_len == 0) | |
8382 | { | |
8383 | *found_addrp = start_addr; | |
8384 | return 1; | |
8385 | } | |
8386 | ||
8387 | /* If we already know the packet isn't supported, fall back to the simple | |
8388 | way of searching memory. */ | |
8389 | ||
8390 | if (packet->support == PACKET_DISABLE) | |
8391 | { | |
8392 | /* Target doesn't provided special support, fall back and use the | |
8393 | standard support (copy memory and do the search here). */ | |
8394 | return simple_search_memory (ops, start_addr, search_space_len, | |
8395 | pattern, pattern_len, found_addrp); | |
8396 | } | |
8397 | ||
8398 | /* Insert header. */ | |
8399 | i = snprintf (rs->buf, max_size, | |
8400 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8401 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8402 | phex_nz (search_space_len, sizeof (search_space_len))); |
8403 | max_size -= (i + 1); | |
8404 | ||
8405 | /* Escape as much data as fits into rs->buf. */ | |
8406 | escaped_pattern_len = | |
8407 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8408 | &used_pattern_len, max_size); | |
8409 | ||
8410 | /* Bail if the pattern is too large. */ | |
8411 | if (used_pattern_len != pattern_len) | |
9b20d036 | 8412 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 DE |
8413 | |
8414 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8415 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8416 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8417 | { | |
8418 | /* The request may not have worked because the command is not | |
8419 | supported. If so, fall back to the simple way. */ | |
8420 | if (packet->support == PACKET_DISABLE) | |
8421 | { | |
8422 | return simple_search_memory (ops, start_addr, search_space_len, | |
8423 | pattern, pattern_len, found_addrp); | |
8424 | } | |
8425 | return -1; | |
8426 | } | |
8427 | ||
8428 | if (rs->buf[0] == '0') | |
8429 | found = 0; | |
8430 | else if (rs->buf[0] == '1') | |
8431 | { | |
8432 | found = 1; | |
8433 | if (rs->buf[1] != ',') | |
10e0fa18 | 8434 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8435 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8436 | *found_addrp = found_addr; | |
8437 | } | |
8438 | else | |
10e0fa18 | 8439 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8440 | |
8441 | return found; | |
8442 | } | |
8443 | ||
96baa820 JM |
8444 | static void |
8445 | remote_rcmd (char *command, | |
d9fcf2fb | 8446 | struct ui_file *outbuf) |
96baa820 | 8447 | { |
d01949b6 | 8448 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8449 | char *p = rs->buf; |
96baa820 JM |
8450 | |
8451 | if (!remote_desc) | |
8a3fe4f8 | 8452 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8453 | |
23860348 | 8454 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8455 | if (command == NULL) |
8456 | command = ""; | |
8457 | ||
23860348 | 8458 | /* The query prefix. */ |
2e9f7625 DJ |
8459 | strcpy (rs->buf, "qRcmd,"); |
8460 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8461 | |
3e43a32a MS |
8462 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8463 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8464 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8465 | |
23860348 | 8466 | /* Encode the actual command. */ |
cfd77fa1 | 8467 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8468 | |
6d820c5c | 8469 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8470 | error (_("Communication problem with target.")); |
96baa820 JM |
8471 | |
8472 | /* get/display the response */ | |
8473 | while (1) | |
8474 | { | |
2e9f7625 DJ |
8475 | char *buf; |
8476 | ||
00bf0b85 | 8477 | /* XXX - see also remote_get_noisy_reply(). */ |
2e9f7625 | 8478 | rs->buf[0] = '\0'; |
6d820c5c | 8479 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 8480 | buf = rs->buf; |
96baa820 | 8481 | if (buf[0] == '\0') |
8a3fe4f8 | 8482 | error (_("Target does not support this command.")); |
96baa820 JM |
8483 | if (buf[0] == 'O' && buf[1] != 'K') |
8484 | { | |
23860348 | 8485 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8486 | continue; |
8487 | } | |
8488 | if (strcmp (buf, "OK") == 0) | |
8489 | break; | |
7be570e7 JM |
8490 | if (strlen (buf) == 3 && buf[0] == 'E' |
8491 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8492 | { | |
8a3fe4f8 | 8493 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8494 | } |
96baa820 JM |
8495 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8496 | { | |
8497 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8498 | |
96baa820 JM |
8499 | fputc_unfiltered (c, outbuf); |
8500 | } | |
8501 | break; | |
8502 | } | |
8503 | } | |
8504 | ||
fd79ecee DJ |
8505 | static VEC(mem_region_s) * |
8506 | remote_memory_map (struct target_ops *ops) | |
8507 | { | |
8508 | VEC(mem_region_s) *result = NULL; | |
8509 | char *text = target_read_stralloc (¤t_target, | |
8510 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8511 | ||
8512 | if (text) | |
8513 | { | |
8514 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8515 | |
fd79ecee DJ |
8516 | result = parse_memory_map (text); |
8517 | do_cleanups (back_to); | |
8518 | } | |
8519 | ||
8520 | return result; | |
8521 | } | |
8522 | ||
c906108c | 8523 | static void |
fba45db2 | 8524 | packet_command (char *args, int from_tty) |
c906108c | 8525 | { |
d01949b6 | 8526 | struct remote_state *rs = get_remote_state (); |
c906108c | 8527 | |
c5aa993b | 8528 | if (!remote_desc) |
8a3fe4f8 | 8529 | error (_("command can only be used with remote target")); |
c906108c | 8530 | |
c5aa993b | 8531 | if (!args) |
8a3fe4f8 | 8532 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8533 | |
8534 | puts_filtered ("sending: "); | |
8535 | print_packet (args); | |
8536 | puts_filtered ("\n"); | |
8537 | putpkt (args); | |
8538 | ||
6d820c5c | 8539 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8540 | puts_filtered ("received: "); |
6d820c5c | 8541 | print_packet (rs->buf); |
c906108c SS |
8542 | puts_filtered ("\n"); |
8543 | } | |
8544 | ||
8545 | #if 0 | |
23860348 | 8546 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8547 | |
a14ed312 | 8548 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8549 | |
a14ed312 | 8550 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8551 | |
a14ed312 | 8552 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8553 | |
a14ed312 | 8554 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8555 | |
23860348 | 8556 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8557 | |
a14ed312 | 8558 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8559 | |
23860348 | 8560 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8561 | |
a14ed312 | 8562 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8563 | |
a14ed312 | 8564 | static void init_remote_threadtests (void); |
c906108c | 8565 | |
23860348 | 8566 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8567 | |
8568 | static void | |
fba45db2 | 8569 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8570 | { |
8571 | int sample_thread = SAMPLE_THREAD; | |
8572 | ||
a3f17187 | 8573 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8574 | set_general_thread (sample_thread); |
c906108c SS |
8575 | } |
8576 | ||
8577 | ||
8578 | static void | |
fba45db2 | 8579 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8580 | { |
8581 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8582 | int pid = ptid_get_pid (inferior_ptid); |
8583 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8584 | |
79d7f229 | 8585 | if (remote_thread_alive (ptid)) |
c906108c SS |
8586 | printf_filtered ("PASS: Thread alive test\n"); |
8587 | else | |
8588 | printf_filtered ("FAIL: Thread alive test\n"); | |
8589 | } | |
8590 | ||
23860348 | 8591 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8592 | |
8593 | void | |
fba45db2 | 8594 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8595 | { |
8596 | char hexid[20]; | |
8597 | ||
23860348 | 8598 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8599 | hexid[16] = 0; |
8600 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8601 | } | |
8602 | ||
8603 | static void | |
fba45db2 | 8604 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8605 | { |
8606 | int startflag = 1; | |
8607 | threadref nextthread; | |
8608 | int done, result_count; | |
8609 | threadref threadlist[3]; | |
8610 | ||
8611 | printf_filtered ("Remote Threadlist test\n"); | |
8612 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8613 | &result_count, &threadlist[0])) | |
8614 | printf_filtered ("FAIL: threadlist test\n"); | |
8615 | else | |
8616 | { | |
8617 | threadref *scan = threadlist; | |
8618 | threadref *limit = scan + result_count; | |
8619 | ||
8620 | while (scan < limit) | |
8621 | output_threadid (" thread ", scan++); | |
8622 | } | |
8623 | } | |
8624 | ||
8625 | void | |
fba45db2 | 8626 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8627 | { |
8628 | output_threadid ("Threadid: ", &info->threadid); | |
8629 | printf_filtered ("Name: %s\n ", info->shortname); | |
8630 | printf_filtered ("State: %s\n", info->display); | |
8631 | printf_filtered ("other: %s\n\n", info->more_display); | |
8632 | } | |
8633 | ||
8634 | int | |
fba45db2 | 8635 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8636 | { |
8637 | int result; | |
8638 | int set; | |
8639 | struct gdb_ext_thread_info threadinfo; | |
8640 | ||
8641 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8642 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8643 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8644 | display_thread_info (&threadinfo); | |
8645 | return result; | |
8646 | } | |
8647 | ||
8648 | static void | |
fba45db2 | 8649 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8650 | { |
8651 | int athread = SAMPLE_THREAD; | |
8652 | threadref thread; | |
8653 | int set; | |
8654 | ||
8655 | int_to_threadref (&thread, athread); | |
8656 | printf_filtered ("Remote Threadinfo test\n"); | |
8657 | if (!get_and_display_threadinfo (&thread)) | |
8658 | printf_filtered ("FAIL cannot get thread info\n"); | |
8659 | } | |
8660 | ||
8661 | static int | |
fba45db2 | 8662 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8663 | { |
8664 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8665 | return get_and_display_threadinfo (ref); | |
8666 | } | |
8667 | ||
8668 | static void | |
fba45db2 | 8669 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8670 | { |
8671 | printf_filtered ("Remote Threadlist update test\n"); | |
8672 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8673 | } | |
8674 | ||
8675 | static void | |
8676 | init_remote_threadtests (void) | |
8677 | { | |
3e43a32a MS |
8678 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8679 | _("Fetch and print the remote list of " | |
8680 | "thread identifiers, one pkt only")); | |
c906108c | 8681 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8682 | _("Fetch and display info about one thread")); |
c906108c | 8683 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8684 | _("Test setting to a different thread")); |
c906108c | 8685 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8686 | _("Iterate through updating all remote thread info")); |
c906108c | 8687 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8688 | _(" Remote thread alive test ")); |
c906108c SS |
8689 | } |
8690 | ||
8691 | #endif /* 0 */ | |
8692 | ||
f3fb8c85 MS |
8693 | /* Convert a thread ID to a string. Returns the string in a static |
8694 | buffer. */ | |
8695 | ||
8696 | static char * | |
117de6a9 | 8697 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8698 | { |
79d7f229 | 8699 | static char buf[64]; |
82f73884 | 8700 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8701 | |
ecd0ada5 PA |
8702 | if (ptid_is_pid (ptid)) |
8703 | { | |
8704 | /* Printing an inferior target id. */ | |
8705 | ||
8706 | /* When multi-process extensions are off, there's no way in the | |
8707 | remote protocol to know the remote process id, if there's any | |
8708 | at all. There's one exception --- when we're connected with | |
8709 | target extended-remote, and we manually attached to a process | |
8710 | with "attach PID". We don't record anywhere a flag that | |
8711 | allows us to distinguish that case from the case of | |
8712 | connecting with extended-remote and the stub already being | |
8713 | attached to a process, and reporting yes to qAttached, hence | |
8714 | no smart special casing here. */ | |
8715 | if (!remote_multi_process_p (rs)) | |
8716 | { | |
8717 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8718 | return buf; | |
8719 | } | |
8720 | ||
8721 | return normal_pid_to_str (ptid); | |
82f73884 | 8722 | } |
ecd0ada5 | 8723 | else |
79d7f229 | 8724 | { |
ecd0ada5 PA |
8725 | if (ptid_equal (magic_null_ptid, ptid)) |
8726 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8727 | else if (remote_multi_process_p (rs)) | |
8728 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
8729 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8730 | else | |
8731 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8732 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8733 | return buf; |
8734 | } | |
f3fb8c85 MS |
8735 | } |
8736 | ||
38691318 KB |
8737 | /* Get the address of the thread local variable in OBJFILE which is |
8738 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8739 | ||
8740 | static CORE_ADDR | |
117de6a9 PA |
8741 | remote_get_thread_local_address (struct target_ops *ops, |
8742 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8743 | { |
444abaca | 8744 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8745 | { |
8746 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8747 | char *p = rs->buf; |
82f73884 | 8748 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8749 | enum packet_result result; |
38691318 KB |
8750 | |
8751 | strcpy (p, "qGetTLSAddr:"); | |
8752 | p += strlen (p); | |
82f73884 | 8753 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8754 | *p++ = ','; |
8755 | p += hexnumstr (p, offset); | |
8756 | *p++ = ','; | |
8757 | p += hexnumstr (p, lm); | |
8758 | *p++ = '\0'; | |
8759 | ||
6d820c5c DJ |
8760 | putpkt (rs->buf); |
8761 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8762 | result = packet_ok (rs->buf, |
8763 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8764 | if (result == PACKET_OK) |
38691318 KB |
8765 | { |
8766 | ULONGEST result; | |
8767 | ||
6d820c5c | 8768 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8769 | return result; |
8770 | } | |
571dd617 | 8771 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8772 | throw_error (TLS_GENERIC_ERROR, |
8773 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8774 | else |
109c3e39 AC |
8775 | throw_error (TLS_GENERIC_ERROR, |
8776 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8777 | } |
8778 | else | |
109c3e39 AC |
8779 | throw_error (TLS_GENERIC_ERROR, |
8780 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8781 | /* Not reached. */ |
8782 | return 0; | |
8783 | } | |
8784 | ||
711e434b PM |
8785 | /* Provide thread local base, i.e. Thread Information Block address. |
8786 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8787 | ||
8788 | int | |
8789 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
8790 | { | |
8791 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8792 | { | |
8793 | struct remote_state *rs = get_remote_state (); | |
8794 | char *p = rs->buf; | |
8795 | char *endp = rs->buf + get_remote_packet_size (); | |
8796 | enum packet_result result; | |
8797 | ||
8798 | strcpy (p, "qGetTIBAddr:"); | |
8799 | p += strlen (p); | |
8800 | p = write_ptid (p, endp, ptid); | |
8801 | *p++ = '\0'; | |
8802 | ||
8803 | putpkt (rs->buf); | |
8804 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8805 | result = packet_ok (rs->buf, | |
8806 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
8807 | if (result == PACKET_OK) | |
8808 | { | |
8809 | ULONGEST result; | |
8810 | ||
8811 | unpack_varlen_hex (rs->buf, &result); | |
8812 | if (addr) | |
8813 | *addr = (CORE_ADDR) result; | |
8814 | return 1; | |
8815 | } | |
8816 | else if (result == PACKET_UNKNOWN) | |
8817 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
8818 | else | |
8819 | error (_("Remote target failed to process qGetTIBAddr request")); | |
8820 | } | |
8821 | else | |
8822 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
8823 | /* Not reached. */ | |
8824 | return 0; | |
8825 | } | |
8826 | ||
29709017 DJ |
8827 | /* Support for inferring a target description based on the current |
8828 | architecture and the size of a 'g' packet. While the 'g' packet | |
8829 | can have any size (since optional registers can be left off the | |
8830 | end), some sizes are easily recognizable given knowledge of the | |
8831 | approximate architecture. */ | |
8832 | ||
8833 | struct remote_g_packet_guess | |
8834 | { | |
8835 | int bytes; | |
8836 | const struct target_desc *tdesc; | |
8837 | }; | |
8838 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
8839 | DEF_VEC_O(remote_g_packet_guess_s); | |
8840 | ||
8841 | struct remote_g_packet_data | |
8842 | { | |
8843 | VEC(remote_g_packet_guess_s) *guesses; | |
8844 | }; | |
8845 | ||
8846 | static struct gdbarch_data *remote_g_packet_data_handle; | |
8847 | ||
8848 | static void * | |
8849 | remote_g_packet_data_init (struct obstack *obstack) | |
8850 | { | |
8851 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
8852 | } | |
8853 | ||
8854 | void | |
8855 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
8856 | const struct target_desc *tdesc) | |
8857 | { | |
8858 | struct remote_g_packet_data *data | |
8859 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
8860 | struct remote_g_packet_guess new_guess, *guess; | |
8861 | int ix; | |
8862 | ||
8863 | gdb_assert (tdesc != NULL); | |
8864 | ||
8865 | for (ix = 0; | |
8866 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8867 | ix++) | |
8868 | if (guess->bytes == bytes) | |
8869 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8870 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
8871 | bytes); |
8872 | ||
8873 | new_guess.bytes = bytes; | |
8874 | new_guess.tdesc = tdesc; | |
8875 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
8876 | } | |
8877 | ||
d962ef82 DJ |
8878 | /* Return 1 if remote_read_description would do anything on this target |
8879 | and architecture, 0 otherwise. */ | |
8880 | ||
8881 | static int | |
8882 | remote_read_description_p (struct target_ops *target) | |
8883 | { | |
8884 | struct remote_g_packet_data *data | |
8885 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
8886 | ||
8887 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
8888 | return 1; | |
8889 | ||
8890 | return 0; | |
8891 | } | |
8892 | ||
29709017 DJ |
8893 | static const struct target_desc * |
8894 | remote_read_description (struct target_ops *target) | |
8895 | { | |
8896 | struct remote_g_packet_data *data | |
1cf3db46 | 8897 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 8898 | |
d962ef82 DJ |
8899 | /* Do not try this during initial connection, when we do not know |
8900 | whether there is a running but stopped thread. */ | |
8901 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
8902 | return NULL; | |
8903 | ||
29709017 DJ |
8904 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
8905 | { | |
8906 | struct remote_g_packet_guess *guess; | |
8907 | int ix; | |
8908 | int bytes = send_g_packet (); | |
8909 | ||
8910 | for (ix = 0; | |
8911 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8912 | ix++) | |
8913 | if (guess->bytes == bytes) | |
8914 | return guess->tdesc; | |
8915 | ||
8916 | /* We discard the g packet. A minor optimization would be to | |
8917 | hold on to it, and fill the register cache once we have selected | |
8918 | an architecture, but it's too tricky to do safely. */ | |
8919 | } | |
8920 | ||
8921 | return NULL; | |
8922 | } | |
8923 | ||
a6b151f1 DJ |
8924 | /* Remote file transfer support. This is host-initiated I/O, not |
8925 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
8926 | ||
8927 | /* If *LEFT is at least the length of STRING, copy STRING to | |
8928 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8929 | decrease *LEFT. Otherwise raise an error. */ | |
8930 | ||
8931 | static void | |
8932 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
8933 | { | |
8934 | int len = strlen (string); | |
8935 | ||
8936 | if (len > *left) | |
8937 | error (_("Packet too long for target.")); | |
8938 | ||
8939 | memcpy (*buffer, string, len); | |
8940 | *buffer += len; | |
8941 | *left -= len; | |
8942 | ||
8943 | /* NUL-terminate the buffer as a convenience, if there is | |
8944 | room. */ | |
8945 | if (*left) | |
8946 | **buffer = '\0'; | |
8947 | } | |
8948 | ||
8949 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
8950 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8951 | decrease *LEFT. Otherwise raise an error. */ | |
8952 | ||
8953 | static void | |
8954 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
8955 | int len) | |
8956 | { | |
8957 | if (2 * len > *left) | |
8958 | error (_("Packet too long for target.")); | |
8959 | ||
8960 | bin2hex (bytes, *buffer, len); | |
8961 | *buffer += 2 * len; | |
8962 | *left -= 2 * len; | |
8963 | ||
8964 | /* NUL-terminate the buffer as a convenience, if there is | |
8965 | room. */ | |
8966 | if (*left) | |
8967 | **buffer = '\0'; | |
8968 | } | |
8969 | ||
8970 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
8971 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8972 | decrease *LEFT. Otherwise raise an error. */ | |
8973 | ||
8974 | static void | |
8975 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
8976 | { | |
8977 | int len = hexnumlen (value); | |
8978 | ||
8979 | if (len > *left) | |
8980 | error (_("Packet too long for target.")); | |
8981 | ||
8982 | hexnumstr (*buffer, value); | |
8983 | *buffer += len; | |
8984 | *left -= len; | |
8985 | ||
8986 | /* NUL-terminate the buffer as a convenience, if there is | |
8987 | room. */ | |
8988 | if (*left) | |
8989 | **buffer = '\0'; | |
8990 | } | |
8991 | ||
8992 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
8993 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
8994 | was included, and *ATTACHMENT to point to the start of the annex | |
8995 | if any. The length of the packet isn't needed here; there may | |
8996 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
8997 | ||
8998 | Return 0 if the packet could be parsed, -1 if it could not. If | |
8999 | -1 is returned, the other variables may not be initialized. */ | |
9000 | ||
9001 | static int | |
9002 | remote_hostio_parse_result (char *buffer, int *retcode, | |
9003 | int *remote_errno, char **attachment) | |
9004 | { | |
9005 | char *p, *p2; | |
9006 | ||
9007 | *remote_errno = 0; | |
9008 | *attachment = NULL; | |
9009 | ||
9010 | if (buffer[0] != 'F') | |
9011 | return -1; | |
9012 | ||
9013 | errno = 0; | |
9014 | *retcode = strtol (&buffer[1], &p, 16); | |
9015 | if (errno != 0 || p == &buffer[1]) | |
9016 | return -1; | |
9017 | ||
9018 | /* Check for ",errno". */ | |
9019 | if (*p == ',') | |
9020 | { | |
9021 | errno = 0; | |
9022 | *remote_errno = strtol (p + 1, &p2, 16); | |
9023 | if (errno != 0 || p + 1 == p2) | |
9024 | return -1; | |
9025 | p = p2; | |
9026 | } | |
9027 | ||
9028 | /* Check for ";attachment". If there is no attachment, the | |
9029 | packet should end here. */ | |
9030 | if (*p == ';') | |
9031 | { | |
9032 | *attachment = p + 1; | |
9033 | return 0; | |
9034 | } | |
9035 | else if (*p == '\0') | |
9036 | return 0; | |
9037 | else | |
9038 | return -1; | |
9039 | } | |
9040 | ||
9041 | /* Send a prepared I/O packet to the target and read its response. | |
9042 | The prepared packet is in the global RS->BUF before this function | |
9043 | is called, and the answer is there when we return. | |
9044 | ||
9045 | COMMAND_BYTES is the length of the request to send, which may include | |
9046 | binary data. WHICH_PACKET is the packet configuration to check | |
9047 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
9048 | is set to the error number and -1 is returned. Otherwise the value | |
9049 | returned by the function is returned. | |
9050 | ||
9051 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
9052 | attachment is expected; an error will be reported if there's a | |
9053 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9054 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9055 | attachment's length. */ | |
9056 | ||
9057 | static int | |
9058 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9059 | int *remote_errno, char **attachment, | |
9060 | int *attachment_len) | |
9061 | { | |
9062 | struct remote_state *rs = get_remote_state (); | |
9063 | int ret, bytes_read; | |
9064 | char *attachment_tmp; | |
9065 | ||
f1838a98 UW |
9066 | if (!remote_desc |
9067 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9068 | { |
9069 | *remote_errno = FILEIO_ENOSYS; | |
9070 | return -1; | |
9071 | } | |
9072 | ||
9073 | putpkt_binary (rs->buf, command_bytes); | |
9074 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9075 | ||
9076 | /* If it timed out, something is wrong. Don't try to parse the | |
9077 | buffer. */ | |
9078 | if (bytes_read < 0) | |
9079 | { | |
9080 | *remote_errno = FILEIO_EINVAL; | |
9081 | return -1; | |
9082 | } | |
9083 | ||
9084 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9085 | { | |
9086 | case PACKET_ERROR: | |
9087 | *remote_errno = FILEIO_EINVAL; | |
9088 | return -1; | |
9089 | case PACKET_UNKNOWN: | |
9090 | *remote_errno = FILEIO_ENOSYS; | |
9091 | return -1; | |
9092 | case PACKET_OK: | |
9093 | break; | |
9094 | } | |
9095 | ||
9096 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9097 | &attachment_tmp)) | |
9098 | { | |
9099 | *remote_errno = FILEIO_EINVAL; | |
9100 | return -1; | |
9101 | } | |
9102 | ||
9103 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9104 | if ((attachment_tmp == NULL && attachment != NULL) | |
9105 | || (attachment_tmp != NULL && attachment == NULL)) | |
9106 | { | |
9107 | *remote_errno = FILEIO_EINVAL; | |
9108 | return -1; | |
9109 | } | |
9110 | ||
9111 | /* If an attachment was found, it must point into the packet buffer; | |
9112 | work out how many bytes there were. */ | |
9113 | if (attachment_tmp != NULL) | |
9114 | { | |
9115 | *attachment = attachment_tmp; | |
9116 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9117 | } | |
9118 | ||
9119 | return ret; | |
9120 | } | |
9121 | ||
9122 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9123 | remote file descriptor, or -1 if an error occurs (and set | |
9124 | *REMOTE_ERRNO). */ | |
9125 | ||
9126 | static int | |
9127 | remote_hostio_open (const char *filename, int flags, int mode, | |
9128 | int *remote_errno) | |
9129 | { | |
9130 | struct remote_state *rs = get_remote_state (); | |
9131 | char *p = rs->buf; | |
9132 | int left = get_remote_packet_size () - 1; | |
9133 | ||
9134 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9135 | ||
9136 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9137 | strlen (filename)); | |
9138 | remote_buffer_add_string (&p, &left, ","); | |
9139 | ||
9140 | remote_buffer_add_int (&p, &left, flags); | |
9141 | remote_buffer_add_string (&p, &left, ","); | |
9142 | ||
9143 | remote_buffer_add_int (&p, &left, mode); | |
9144 | ||
9145 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9146 | remote_errno, NULL, NULL); | |
9147 | } | |
9148 | ||
9149 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9150 | Return the number of bytes written, or -1 if an error occurs (and | |
9151 | set *REMOTE_ERRNO). */ | |
9152 | ||
9153 | static int | |
9154 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9155 | ULONGEST offset, int *remote_errno) | |
9156 | { | |
9157 | struct remote_state *rs = get_remote_state (); | |
9158 | char *p = rs->buf; | |
9159 | int left = get_remote_packet_size (); | |
9160 | int out_len; | |
9161 | ||
9162 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9163 | ||
9164 | remote_buffer_add_int (&p, &left, fd); | |
9165 | remote_buffer_add_string (&p, &left, ","); | |
9166 | ||
9167 | remote_buffer_add_int (&p, &left, offset); | |
9168 | remote_buffer_add_string (&p, &left, ","); | |
9169 | ||
9170 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9171 | get_remote_packet_size () - (p - rs->buf)); | |
9172 | ||
9173 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9174 | remote_errno, NULL, NULL); | |
9175 | } | |
9176 | ||
9177 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9178 | Return the number of bytes read, or -1 if an error occurs (and | |
9179 | set *REMOTE_ERRNO). */ | |
9180 | ||
9181 | static int | |
9182 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9183 | ULONGEST offset, int *remote_errno) | |
9184 | { | |
9185 | struct remote_state *rs = get_remote_state (); | |
9186 | char *p = rs->buf; | |
9187 | char *attachment; | |
9188 | int left = get_remote_packet_size (); | |
9189 | int ret, attachment_len; | |
9190 | int read_len; | |
9191 | ||
9192 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9193 | ||
9194 | remote_buffer_add_int (&p, &left, fd); | |
9195 | remote_buffer_add_string (&p, &left, ","); | |
9196 | ||
9197 | remote_buffer_add_int (&p, &left, len); | |
9198 | remote_buffer_add_string (&p, &left, ","); | |
9199 | ||
9200 | remote_buffer_add_int (&p, &left, offset); | |
9201 | ||
9202 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9203 | remote_errno, &attachment, | |
9204 | &attachment_len); | |
9205 | ||
9206 | if (ret < 0) | |
9207 | return ret; | |
9208 | ||
9209 | read_len = remote_unescape_input (attachment, attachment_len, | |
9210 | read_buf, len); | |
9211 | if (read_len != ret) | |
9212 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9213 | ||
9214 | return ret; | |
9215 | } | |
9216 | ||
9217 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9218 | (and set *REMOTE_ERRNO). */ | |
9219 | ||
9220 | static int | |
9221 | remote_hostio_close (int fd, int *remote_errno) | |
9222 | { | |
9223 | struct remote_state *rs = get_remote_state (); | |
9224 | char *p = rs->buf; | |
9225 | int left = get_remote_packet_size () - 1; | |
9226 | ||
9227 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9228 | ||
9229 | remote_buffer_add_int (&p, &left, fd); | |
9230 | ||
9231 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9232 | remote_errno, NULL, NULL); | |
9233 | } | |
9234 | ||
9235 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9236 | occurs (and set *REMOTE_ERRNO). */ | |
9237 | ||
9238 | static int | |
9239 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9240 | { | |
9241 | struct remote_state *rs = get_remote_state (); | |
9242 | char *p = rs->buf; | |
9243 | int left = get_remote_packet_size () - 1; | |
9244 | ||
9245 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9246 | ||
9247 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9248 | strlen (filename)); | |
9249 | ||
9250 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9251 | remote_errno, NULL, NULL); | |
9252 | } | |
9253 | ||
9254 | static int | |
9255 | remote_fileio_errno_to_host (int errnum) | |
9256 | { | |
9257 | switch (errnum) | |
9258 | { | |
9259 | case FILEIO_EPERM: | |
9260 | return EPERM; | |
9261 | case FILEIO_ENOENT: | |
9262 | return ENOENT; | |
9263 | case FILEIO_EINTR: | |
9264 | return EINTR; | |
9265 | case FILEIO_EIO: | |
9266 | return EIO; | |
9267 | case FILEIO_EBADF: | |
9268 | return EBADF; | |
9269 | case FILEIO_EACCES: | |
9270 | return EACCES; | |
9271 | case FILEIO_EFAULT: | |
9272 | return EFAULT; | |
9273 | case FILEIO_EBUSY: | |
9274 | return EBUSY; | |
9275 | case FILEIO_EEXIST: | |
9276 | return EEXIST; | |
9277 | case FILEIO_ENODEV: | |
9278 | return ENODEV; | |
9279 | case FILEIO_ENOTDIR: | |
9280 | return ENOTDIR; | |
9281 | case FILEIO_EISDIR: | |
9282 | return EISDIR; | |
9283 | case FILEIO_EINVAL: | |
9284 | return EINVAL; | |
9285 | case FILEIO_ENFILE: | |
9286 | return ENFILE; | |
9287 | case FILEIO_EMFILE: | |
9288 | return EMFILE; | |
9289 | case FILEIO_EFBIG: | |
9290 | return EFBIG; | |
9291 | case FILEIO_ENOSPC: | |
9292 | return ENOSPC; | |
9293 | case FILEIO_ESPIPE: | |
9294 | return ESPIPE; | |
9295 | case FILEIO_EROFS: | |
9296 | return EROFS; | |
9297 | case FILEIO_ENOSYS: | |
9298 | return ENOSYS; | |
9299 | case FILEIO_ENAMETOOLONG: | |
9300 | return ENAMETOOLONG; | |
9301 | } | |
9302 | return -1; | |
9303 | } | |
9304 | ||
9305 | static char * | |
9306 | remote_hostio_error (int errnum) | |
9307 | { | |
9308 | int host_error = remote_fileio_errno_to_host (errnum); | |
9309 | ||
9310 | if (host_error == -1) | |
9311 | error (_("Unknown remote I/O error %d"), errnum); | |
9312 | else | |
9313 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9314 | } | |
9315 | ||
a6b151f1 DJ |
9316 | static void |
9317 | remote_hostio_close_cleanup (void *opaque) | |
9318 | { | |
9319 | int fd = *(int *) opaque; | |
9320 | int remote_errno; | |
9321 | ||
9322 | remote_hostio_close (fd, &remote_errno); | |
9323 | } | |
9324 | ||
f1838a98 UW |
9325 | |
9326 | static void * | |
9327 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9328 | { | |
9329 | const char *filename = bfd_get_filename (abfd); | |
9330 | int fd, remote_errno; | |
9331 | int *stream; | |
9332 | ||
9333 | gdb_assert (remote_filename_p (filename)); | |
9334 | ||
9335 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9336 | if (fd == -1) | |
9337 | { | |
9338 | errno = remote_fileio_errno_to_host (remote_errno); | |
9339 | bfd_set_error (bfd_error_system_call); | |
9340 | return NULL; | |
9341 | } | |
9342 | ||
9343 | stream = xmalloc (sizeof (int)); | |
9344 | *stream = fd; | |
9345 | return stream; | |
9346 | } | |
9347 | ||
9348 | static int | |
9349 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9350 | { | |
9351 | int fd = *(int *)stream; | |
9352 | int remote_errno; | |
9353 | ||
9354 | xfree (stream); | |
9355 | ||
9356 | /* Ignore errors on close; these may happen if the remote | |
9357 | connection was already torn down. */ | |
9358 | remote_hostio_close (fd, &remote_errno); | |
9359 | ||
9360 | return 1; | |
9361 | } | |
9362 | ||
9363 | static file_ptr | |
9364 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9365 | file_ptr nbytes, file_ptr offset) | |
9366 | { | |
9367 | int fd = *(int *)stream; | |
9368 | int remote_errno; | |
9369 | file_ptr pos, bytes; | |
9370 | ||
9371 | pos = 0; | |
9372 | while (nbytes > pos) | |
9373 | { | |
9374 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9375 | offset + pos, &remote_errno); | |
9376 | if (bytes == 0) | |
9377 | /* Success, but no bytes, means end-of-file. */ | |
9378 | break; | |
9379 | if (bytes == -1) | |
9380 | { | |
9381 | errno = remote_fileio_errno_to_host (remote_errno); | |
9382 | bfd_set_error (bfd_error_system_call); | |
9383 | return -1; | |
9384 | } | |
9385 | ||
9386 | pos += bytes; | |
9387 | } | |
9388 | ||
9389 | return pos; | |
9390 | } | |
9391 | ||
9392 | static int | |
9393 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9394 | { | |
9395 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9396 | sb->st_size = INT_MAX; | |
9397 | return 0; | |
9398 | } | |
9399 | ||
9400 | int | |
9401 | remote_filename_p (const char *filename) | |
9402 | { | |
9403 | return strncmp (filename, "remote:", 7) == 0; | |
9404 | } | |
9405 | ||
9406 | bfd * | |
9407 | remote_bfd_open (const char *remote_file, const char *target) | |
9408 | { | |
9409 | return bfd_openr_iovec (remote_file, target, | |
9410 | remote_bfd_iovec_open, NULL, | |
9411 | remote_bfd_iovec_pread, | |
9412 | remote_bfd_iovec_close, | |
9413 | remote_bfd_iovec_stat); | |
9414 | } | |
9415 | ||
a6b151f1 DJ |
9416 | void |
9417 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9418 | { | |
9419 | struct cleanup *back_to, *close_cleanup; | |
9420 | int retcode, fd, remote_errno, bytes, io_size; | |
9421 | FILE *file; | |
9422 | gdb_byte *buffer; | |
9423 | int bytes_in_buffer; | |
9424 | int saw_eof; | |
9425 | ULONGEST offset; | |
9426 | ||
9427 | if (!remote_desc) | |
9428 | error (_("command can only be used with remote target")); | |
9429 | ||
9430 | file = fopen (local_file, "rb"); | |
9431 | if (file == NULL) | |
9432 | perror_with_name (local_file); | |
7c8a8b04 | 9433 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9434 | |
9435 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9436 | | FILEIO_O_TRUNC), | |
9437 | 0700, &remote_errno); | |
9438 | if (fd == -1) | |
9439 | remote_hostio_error (remote_errno); | |
9440 | ||
9441 | /* Send up to this many bytes at once. They won't all fit in the | |
9442 | remote packet limit, so we'll transfer slightly fewer. */ | |
9443 | io_size = get_remote_packet_size (); | |
9444 | buffer = xmalloc (io_size); | |
9445 | make_cleanup (xfree, buffer); | |
9446 | ||
9447 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9448 | ||
9449 | bytes_in_buffer = 0; | |
9450 | saw_eof = 0; | |
9451 | offset = 0; | |
9452 | while (bytes_in_buffer || !saw_eof) | |
9453 | { | |
9454 | if (!saw_eof) | |
9455 | { | |
3e43a32a MS |
9456 | bytes = fread (buffer + bytes_in_buffer, 1, |
9457 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9458 | file); |
9459 | if (bytes == 0) | |
9460 | { | |
9461 | if (ferror (file)) | |
9462 | error (_("Error reading %s."), local_file); | |
9463 | else | |
9464 | { | |
9465 | /* EOF. Unless there is something still in the | |
9466 | buffer from the last iteration, we are done. */ | |
9467 | saw_eof = 1; | |
9468 | if (bytes_in_buffer == 0) | |
9469 | break; | |
9470 | } | |
9471 | } | |
9472 | } | |
9473 | else | |
9474 | bytes = 0; | |
9475 | ||
9476 | bytes += bytes_in_buffer; | |
9477 | bytes_in_buffer = 0; | |
9478 | ||
3e43a32a MS |
9479 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9480 | offset, &remote_errno); | |
a6b151f1 DJ |
9481 | |
9482 | if (retcode < 0) | |
9483 | remote_hostio_error (remote_errno); | |
9484 | else if (retcode == 0) | |
9485 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9486 | else if (retcode < bytes) | |
9487 | { | |
9488 | /* Short write. Save the rest of the read data for the next | |
9489 | write. */ | |
9490 | bytes_in_buffer = bytes - retcode; | |
9491 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9492 | } | |
9493 | ||
9494 | offset += retcode; | |
9495 | } | |
9496 | ||
9497 | discard_cleanups (close_cleanup); | |
9498 | if (remote_hostio_close (fd, &remote_errno)) | |
9499 | remote_hostio_error (remote_errno); | |
9500 | ||
9501 | if (from_tty) | |
9502 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9503 | do_cleanups (back_to); | |
9504 | } | |
9505 | ||
9506 | void | |
9507 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9508 | { | |
9509 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9510 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9511 | FILE *file; |
9512 | gdb_byte *buffer; | |
9513 | ULONGEST offset; | |
9514 | ||
9515 | if (!remote_desc) | |
9516 | error (_("command can only be used with remote target")); | |
9517 | ||
9518 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9519 | if (fd == -1) | |
9520 | remote_hostio_error (remote_errno); | |
9521 | ||
9522 | file = fopen (local_file, "wb"); | |
9523 | if (file == NULL) | |
9524 | perror_with_name (local_file); | |
7c8a8b04 | 9525 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9526 | |
9527 | /* Send up to this many bytes at once. They won't all fit in the | |
9528 | remote packet limit, so we'll transfer slightly fewer. */ | |
9529 | io_size = get_remote_packet_size (); | |
9530 | buffer = xmalloc (io_size); | |
9531 | make_cleanup (xfree, buffer); | |
9532 | ||
9533 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9534 | ||
9535 | offset = 0; | |
9536 | while (1) | |
9537 | { | |
9538 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9539 | if (bytes == 0) | |
9540 | /* Success, but no bytes, means end-of-file. */ | |
9541 | break; | |
9542 | if (bytes == -1) | |
9543 | remote_hostio_error (remote_errno); | |
9544 | ||
9545 | offset += bytes; | |
9546 | ||
9547 | bytes = fwrite (buffer, 1, bytes, file); | |
9548 | if (bytes == 0) | |
9549 | perror_with_name (local_file); | |
9550 | } | |
9551 | ||
9552 | discard_cleanups (close_cleanup); | |
9553 | if (remote_hostio_close (fd, &remote_errno)) | |
9554 | remote_hostio_error (remote_errno); | |
9555 | ||
9556 | if (from_tty) | |
9557 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9558 | do_cleanups (back_to); | |
9559 | } | |
9560 | ||
9561 | void | |
9562 | remote_file_delete (const char *remote_file, int from_tty) | |
9563 | { | |
9564 | int retcode, remote_errno; | |
9565 | ||
9566 | if (!remote_desc) | |
9567 | error (_("command can only be used with remote target")); | |
9568 | ||
9569 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9570 | if (retcode == -1) | |
9571 | remote_hostio_error (remote_errno); | |
9572 | ||
9573 | if (from_tty) | |
9574 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9575 | } | |
9576 | ||
9577 | static void | |
9578 | remote_put_command (char *args, int from_tty) | |
9579 | { | |
9580 | struct cleanup *back_to; | |
9581 | char **argv; | |
9582 | ||
d1a41061 PP |
9583 | if (args == NULL) |
9584 | error_no_arg (_("file to put")); | |
9585 | ||
9586 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9587 | back_to = make_cleanup_freeargv (argv); |
9588 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9589 | error (_("Invalid parameters to remote put")); | |
9590 | ||
9591 | remote_file_put (argv[0], argv[1], from_tty); | |
9592 | ||
9593 | do_cleanups (back_to); | |
9594 | } | |
9595 | ||
9596 | static void | |
9597 | remote_get_command (char *args, int from_tty) | |
9598 | { | |
9599 | struct cleanup *back_to; | |
9600 | char **argv; | |
9601 | ||
d1a41061 PP |
9602 | if (args == NULL) |
9603 | error_no_arg (_("file to get")); | |
9604 | ||
9605 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9606 | back_to = make_cleanup_freeargv (argv); |
9607 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9608 | error (_("Invalid parameters to remote get")); | |
9609 | ||
9610 | remote_file_get (argv[0], argv[1], from_tty); | |
9611 | ||
9612 | do_cleanups (back_to); | |
9613 | } | |
9614 | ||
9615 | static void | |
9616 | remote_delete_command (char *args, int from_tty) | |
9617 | { | |
9618 | struct cleanup *back_to; | |
9619 | char **argv; | |
9620 | ||
d1a41061 PP |
9621 | if (args == NULL) |
9622 | error_no_arg (_("file to delete")); | |
9623 | ||
9624 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9625 | back_to = make_cleanup_freeargv (argv); |
9626 | if (argv[0] == NULL || argv[1] != NULL) | |
9627 | error (_("Invalid parameters to remote delete")); | |
9628 | ||
9629 | remote_file_delete (argv[0], from_tty); | |
9630 | ||
9631 | do_cleanups (back_to); | |
9632 | } | |
9633 | ||
9634 | static void | |
9635 | remote_command (char *args, int from_tty) | |
9636 | { | |
9637 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9638 | } | |
9639 | ||
b2175913 MS |
9640 | static int |
9641 | remote_can_execute_reverse (void) | |
9642 | { | |
40ab02ce MS |
9643 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9644 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9645 | return 1; | |
9646 | else | |
9647 | return 0; | |
b2175913 MS |
9648 | } |
9649 | ||
74531fed PA |
9650 | static int |
9651 | remote_supports_non_stop (void) | |
9652 | { | |
9653 | return 1; | |
9654 | } | |
9655 | ||
8a305172 PA |
9656 | static int |
9657 | remote_supports_multi_process (void) | |
9658 | { | |
9659 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9660 | |
8a305172 PA |
9661 | return remote_multi_process_p (rs); |
9662 | } | |
9663 | ||
782b2b07 SS |
9664 | int |
9665 | remote_supports_cond_tracepoints (void) | |
9666 | { | |
9667 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9668 | |
782b2b07 SS |
9669 | return rs->cond_tracepoints; |
9670 | } | |
9671 | ||
7a697b8d SS |
9672 | int |
9673 | remote_supports_fast_tracepoints (void) | |
9674 | { | |
9675 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9676 | |
7a697b8d SS |
9677 | return rs->fast_tracepoints; |
9678 | } | |
9679 | ||
0fb4aa4b PA |
9680 | static int |
9681 | remote_supports_static_tracepoints (void) | |
9682 | { | |
9683 | struct remote_state *rs = get_remote_state (); | |
9684 | ||
9685 | return rs->static_tracepoints; | |
9686 | } | |
9687 | ||
d248b706 KY |
9688 | static int |
9689 | remote_supports_enable_disable_tracepoint (void) | |
9690 | { | |
9691 | struct remote_state *rs = get_remote_state (); | |
9692 | ||
9693 | return rs->enable_disable_tracepoints; | |
9694 | } | |
9695 | ||
35b1e5cc | 9696 | static void |
ad91cd99 | 9697 | remote_trace_init (void) |
35b1e5cc SS |
9698 | { |
9699 | putpkt ("QTinit"); | |
9700 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9701 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9702 | error (_("Target does not support this command.")); |
9703 | } | |
9704 | ||
9705 | static void free_actions_list (char **actions_list); | |
9706 | static void free_actions_list_cleanup_wrapper (void *); | |
9707 | static void | |
9708 | free_actions_list_cleanup_wrapper (void *al) | |
9709 | { | |
9710 | free_actions_list (al); | |
9711 | } | |
9712 | ||
9713 | static void | |
9714 | free_actions_list (char **actions_list) | |
9715 | { | |
9716 | int ndx; | |
9717 | ||
9718 | if (actions_list == 0) | |
9719 | return; | |
9720 | ||
9721 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9722 | xfree (actions_list[ndx]); | |
9723 | ||
9724 | xfree (actions_list); | |
9725 | } | |
9726 | ||
409873ef SS |
9727 | /* Recursive routine to walk through command list including loops, and |
9728 | download packets for each command. */ | |
9729 | ||
9730 | static void | |
9731 | remote_download_command_source (int num, ULONGEST addr, | |
9732 | struct command_line *cmds) | |
9733 | { | |
9734 | struct remote_state *rs = get_remote_state (); | |
9735 | struct command_line *cmd; | |
9736 | ||
9737 | for (cmd = cmds; cmd; cmd = cmd->next) | |
9738 | { | |
0df8b418 | 9739 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9740 | strcpy (rs->buf, "QTDPsrc:"); |
9741 | encode_source_string (num, addr, "cmd", cmd->line, | |
9742 | rs->buf + strlen (rs->buf), | |
9743 | rs->buf_size - strlen (rs->buf)); | |
9744 | putpkt (rs->buf); | |
9745 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9746 | if (strcmp (target_buf, "OK")) | |
9747 | warning (_("Target does not support source download.")); | |
9748 | ||
9749 | if (cmd->control_type == while_control | |
9750 | || cmd->control_type == while_stepping_control) | |
9751 | { | |
9752 | remote_download_command_source (num, addr, *cmd->body_list); | |
9753 | ||
0df8b418 | 9754 | QUIT; /* Allow user to bail out with ^C. */ |
409873ef SS |
9755 | strcpy (rs->buf, "QTDPsrc:"); |
9756 | encode_source_string (num, addr, "cmd", "end", | |
9757 | rs->buf + strlen (rs->buf), | |
9758 | rs->buf_size - strlen (rs->buf)); | |
9759 | putpkt (rs->buf); | |
9760 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9761 | if (strcmp (target_buf, "OK")) | |
9762 | warning (_("Target does not support source download.")); | |
9763 | } | |
9764 | } | |
9765 | } | |
9766 | ||
35b1e5cc | 9767 | static void |
d9b3f62e | 9768 | remote_download_tracepoint (struct breakpoint *b) |
35b1e5cc | 9769 | { |
9355b391 | 9770 | struct bp_location *loc; |
35b1e5cc | 9771 | CORE_ADDR tpaddr; |
409873ef | 9772 | char addrbuf[40]; |
35b1e5cc SS |
9773 | char buf[2048]; |
9774 | char **tdp_actions; | |
9775 | char **stepping_actions; | |
9776 | int ndx; | |
9777 | struct cleanup *old_chain = NULL; | |
9778 | struct agent_expr *aexpr; | |
9779 | struct cleanup *aexpr_chain = NULL; | |
9780 | char *pkt; | |
d9b3f62e | 9781 | struct tracepoint *t = (struct tracepoint *) b; |
35b1e5cc | 9782 | |
9355b391 SS |
9783 | /* Iterate over all the tracepoint locations. It's up to the target to |
9784 | notice multiple tracepoint packets with the same number but different | |
9785 | addresses, and treat them as multiple locations. */ | |
d9b3f62e | 9786 | for (loc = b->loc; loc; loc = loc->next) |
9355b391 | 9787 | { |
d9b3f62e | 9788 | encode_actions (b, loc, &tdp_actions, &stepping_actions); |
9355b391 SS |
9789 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, |
9790 | tdp_actions); | |
3e43a32a MS |
9791 | (void) make_cleanup (free_actions_list_cleanup_wrapper, |
9792 | stepping_actions); | |
9355b391 SS |
9793 | |
9794 | tpaddr = loc->address; | |
409873ef | 9795 | sprintf_vma (addrbuf, tpaddr); |
d9b3f62e | 9796 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", b->number, |
409873ef | 9797 | addrbuf, /* address */ |
d9b3f62e | 9798 | (b->enable_state == bp_enabled ? 'E' : 'D'), |
9355b391 SS |
9799 | t->step_count, t->pass_count); |
9800 | /* Fast tracepoints are mostly handled by the target, but we can | |
9801 | tell the target how big of an instruction block should be moved | |
9802 | around. */ | |
d9b3f62e | 9803 | if (b->type == bp_fast_tracepoint) |
35b1e5cc | 9804 | { |
9355b391 SS |
9805 | /* Only test for support at download time; we may not know |
9806 | target capabilities at definition time. */ | |
9807 | if (remote_supports_fast_tracepoints ()) | |
9808 | { | |
9809 | int isize; | |
35b1e5cc | 9810 | |
9355b391 SS |
9811 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
9812 | tpaddr, &isize, NULL)) | |
9813 | sprintf (buf + strlen (buf), ":F%x", isize); | |
9814 | else | |
9815 | /* If it passed validation at definition but fails now, | |
9816 | something is very wrong. */ | |
9817 | internal_error (__FILE__, __LINE__, | |
9b20d036 MS |
9818 | _("Fast tracepoint not " |
9819 | "valid during download")); | |
9355b391 | 9820 | } |
35b1e5cc | 9821 | else |
9355b391 SS |
9822 | /* Fast tracepoints are functionally identical to regular |
9823 | tracepoints, so don't take lack of support as a reason to | |
9824 | give up on the trace run. */ | |
3e43a32a | 9825 | warning (_("Target does not support fast tracepoints, " |
d9b3f62e | 9826 | "downloading %d as regular tracepoint"), b->number); |
35b1e5cc | 9827 | } |
d9b3f62e | 9828 | else if (b->type == bp_static_tracepoint) |
0fb4aa4b PA |
9829 | { |
9830 | /* Only test for support at download time; we may not know | |
9831 | target capabilities at definition time. */ | |
9832 | if (remote_supports_static_tracepoints ()) | |
9833 | { | |
9834 | struct static_tracepoint_marker marker; | |
9835 | ||
9836 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) | |
9837 | strcat (buf, ":S"); | |
9838 | else | |
74232302 | 9839 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b PA |
9840 | } |
9841 | else | |
9842 | /* Fast tracepoints are functionally identical to regular | |
9843 | tracepoints, so don't take lack of support as a reason | |
9844 | to give up on the trace run. */ | |
9845 | error (_("Target does not support static tracepoints")); | |
9846 | } | |
9355b391 SS |
9847 | /* If the tracepoint has a conditional, make it into an agent |
9848 | expression and append to the definition. */ | |
9849 | if (loc->cond) | |
35b1e5cc | 9850 | { |
9355b391 SS |
9851 | /* Only test support at download time, we may not know target |
9852 | capabilities at definition time. */ | |
9853 | if (remote_supports_cond_tracepoints ()) | |
9854 | { | |
9855 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); | |
9856 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
9857 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
9858 | pkt = buf + strlen (buf); | |
9859 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
9860 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
9861 | *pkt = '\0'; | |
9862 | do_cleanups (aexpr_chain); | |
9863 | } | |
9864 | else | |
3e43a32a | 9865 | warning (_("Target does not support conditional tracepoints, " |
d9b3f62e | 9866 | "ignoring tp %d cond"), b->number); |
35b1e5cc | 9867 | } |
35b1e5cc | 9868 | |
d9b3f62e | 9869 | if (b->commands || *default_collect) |
9355b391 SS |
9870 | strcat (buf, "-"); |
9871 | putpkt (buf); | |
9872 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9873 | if (strcmp (target_buf, "OK")) | |
9874 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 9875 | |
9355b391 SS |
9876 | /* do_single_steps (t); */ |
9877 | if (tdp_actions) | |
35b1e5cc | 9878 | { |
9355b391 SS |
9879 | for (ndx = 0; tdp_actions[ndx]; ndx++) |
9880 | { | |
0df8b418 | 9881 | QUIT; /* Allow user to bail out with ^C. */ |
9355b391 | 9882 | sprintf (buf, "QTDP:-%x:%s:%s%c", |
d9b3f62e | 9883 | b->number, addrbuf, /* address */ |
9355b391 SS |
9884 | tdp_actions[ndx], |
9885 | ((tdp_actions[ndx + 1] || stepping_actions) | |
9886 | ? '-' : 0)); | |
9887 | putpkt (buf); | |
9888 | remote_get_noisy_reply (&target_buf, | |
9889 | &target_buf_size); | |
9890 | if (strcmp (target_buf, "OK")) | |
9891 | error (_("Error on target while setting tracepoints.")); | |
9892 | } | |
35b1e5cc | 9893 | } |
9355b391 | 9894 | if (stepping_actions) |
35b1e5cc | 9895 | { |
9355b391 SS |
9896 | for (ndx = 0; stepping_actions[ndx]; ndx++) |
9897 | { | |
0df8b418 | 9898 | QUIT; /* Allow user to bail out with ^C. */ |
9355b391 | 9899 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", |
d9b3f62e | 9900 | b->number, addrbuf, /* address */ |
9355b391 SS |
9901 | ((ndx == 0) ? "S" : ""), |
9902 | stepping_actions[ndx], | |
9903 | (stepping_actions[ndx + 1] ? "-" : "")); | |
9904 | putpkt (buf); | |
9905 | remote_get_noisy_reply (&target_buf, | |
9906 | &target_buf_size); | |
9907 | if (strcmp (target_buf, "OK")) | |
9908 | error (_("Error on target while setting tracepoints.")); | |
9909 | } | |
35b1e5cc | 9910 | } |
409873ef | 9911 | |
3e43a32a MS |
9912 | if (remote_protocol_packets[PACKET_TracepointSource].support |
9913 | == PACKET_ENABLE) | |
409873ef | 9914 | { |
d9b3f62e | 9915 | if (b->addr_string) |
409873ef SS |
9916 | { |
9917 | strcpy (buf, "QTDPsrc:"); | |
d9b3f62e PA |
9918 | encode_source_string (b->number, loc->address, |
9919 | "at", b->addr_string, buf + strlen (buf), | |
409873ef SS |
9920 | 2048 - strlen (buf)); |
9921 | ||
9922 | putpkt (buf); | |
9923 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9924 | if (strcmp (target_buf, "OK")) | |
9925 | warning (_("Target does not support source download.")); | |
9926 | } | |
d9b3f62e | 9927 | if (b->cond_string) |
409873ef SS |
9928 | { |
9929 | strcpy (buf, "QTDPsrc:"); | |
d9b3f62e PA |
9930 | encode_source_string (b->number, loc->address, |
9931 | "cond", b->cond_string, buf + strlen (buf), | |
409873ef SS |
9932 | 2048 - strlen (buf)); |
9933 | putpkt (buf); | |
9934 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9935 | if (strcmp (target_buf, "OK")) | |
9936 | warning (_("Target does not support source download.")); | |
9937 | } | |
d9b3f62e PA |
9938 | remote_download_command_source (b->number, loc->address, |
9939 | breakpoint_commands (b)); | |
409873ef SS |
9940 | } |
9941 | ||
9355b391 | 9942 | do_cleanups (old_chain); |
35b1e5cc | 9943 | } |
35b1e5cc SS |
9944 | } |
9945 | ||
9946 | static void | |
9947 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
9948 | { | |
9949 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 9950 | char *p; |
35b1e5cc | 9951 | |
00bf0b85 SS |
9952 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
9953 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
9954 | p = rs->buf + strlen (rs->buf); | |
9955 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
9956 | error (_("Trace state variable name too long for tsv definition packet")); | |
9957 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
9958 | *p++ = '\0'; | |
35b1e5cc SS |
9959 | putpkt (rs->buf); |
9960 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
9961 | if (*target_buf == '\0') |
9962 | error (_("Target does not support this command.")); | |
9963 | if (strcmp (target_buf, "OK") != 0) | |
9964 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
9965 | } |
9966 | ||
d248b706 KY |
9967 | static void |
9968 | remote_enable_tracepoint (struct bp_location *location) | |
9969 | { | |
9970 | struct remote_state *rs = get_remote_state (); | |
9971 | char addr_buf[40]; | |
9972 | ||
9973 | sprintf_vma (addr_buf, location->address); | |
9974 | sprintf (rs->buf, "QTEnable:%x:%s", location->owner->number, addr_buf); | |
9975 | putpkt (rs->buf); | |
9976 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
9977 | if (*rs->buf == '\0') | |
9978 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); | |
9979 | if (strcmp (rs->buf, "OK") != 0) | |
9980 | error (_("Error on target while enabling tracepoint.")); | |
9981 | } | |
9982 | ||
9983 | static void | |
9984 | remote_disable_tracepoint (struct bp_location *location) | |
9985 | { | |
9986 | struct remote_state *rs = get_remote_state (); | |
9987 | char addr_buf[40]; | |
9988 | ||
9989 | sprintf_vma (addr_buf, location->address); | |
9990 | sprintf (rs->buf, "QTDisable:%x:%s", location->owner->number, addr_buf); | |
9991 | putpkt (rs->buf); | |
9992 | remote_get_noisy_reply (&rs->buf, &rs->buf_size); | |
9993 | if (*rs->buf == '\0') | |
9994 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); | |
9995 | if (strcmp (rs->buf, "OK") != 0) | |
9996 | error (_("Error on target while disabling tracepoint.")); | |
9997 | } | |
9998 | ||
35b1e5cc | 9999 | static void |
ad91cd99 | 10000 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
10001 | { |
10002 | asection *s; | |
10003 | bfd_size_type size; | |
608bcef2 | 10004 | bfd_vma vma; |
35b1e5cc | 10005 | int anysecs = 0; |
c2fa21f1 | 10006 | int offset = 0; |
35b1e5cc SS |
10007 | |
10008 | if (!exec_bfd) | |
10009 | return; /* No information to give. */ | |
10010 | ||
10011 | strcpy (target_buf, "QTro"); | |
10012 | for (s = exec_bfd->sections; s; s = s->next) | |
10013 | { | |
10014 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 10015 | int sec_length; |
35b1e5cc SS |
10016 | |
10017 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 10018 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
10019 | (s->flags & SEC_READONLY) == 0) |
10020 | continue; | |
10021 | ||
10022 | anysecs = 1; | |
608bcef2 | 10023 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 10024 | size = bfd_get_section_size (s); |
608bcef2 HZ |
10025 | sprintf_vma (tmp1, vma); |
10026 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 HZ |
10027 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
10028 | if (offset + sec_length + 1 > target_buf_size) | |
10029 | { | |
864ac8a7 HZ |
10030 | if (remote_protocol_packets[PACKET_qXfer_traceframe_info].support |
10031 | != PACKET_ENABLE) | |
10032 | warning (_("\ | |
c2fa21f1 HZ |
10033 | Too many sections for read-only sections definition packet.")); |
10034 | break; | |
10035 | } | |
10036 | sprintf (target_buf + offset, ":%s,%s", tmp1, tmp2); | |
10037 | offset += sec_length; | |
35b1e5cc SS |
10038 | } |
10039 | if (anysecs) | |
10040 | { | |
10041 | putpkt (target_buf); | |
10042 | getpkt (&target_buf, &target_buf_size, 0); | |
10043 | } | |
10044 | } | |
10045 | ||
10046 | static void | |
ad91cd99 | 10047 | remote_trace_start (void) |
35b1e5cc SS |
10048 | { |
10049 | putpkt ("QTStart"); | |
10050 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10051 | if (*target_buf == '\0') |
10052 | error (_("Target does not support this command.")); | |
10053 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10054 | error (_("Bogus reply from target: %s"), target_buf); |
10055 | } | |
10056 | ||
10057 | static int | |
00bf0b85 | 10058 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 10059 | { |
953b98d1 | 10060 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 10061 | char *p = NULL; |
0df8b418 | 10062 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 10063 | extern int trace_regblock_size; |
67f41397 | 10064 | volatile struct gdb_exception ex; |
a744cf53 | 10065 | |
00bf0b85 SS |
10066 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
10067 | ||
35b1e5cc | 10068 | putpkt ("qTStatus"); |
67f41397 JK |
10069 | |
10070 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
10071 | { | |
10072 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10073 | } | |
10074 | if (ex.reason < 0) | |
10075 | { | |
10076 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
10077 | return -1; | |
10078 | } | |
00bf0b85 SS |
10079 | |
10080 | /* If the remote target doesn't do tracing, flag it. */ | |
10081 | if (*p == '\0') | |
10082 | return -1; | |
35b1e5cc | 10083 | |
00bf0b85 SS |
10084 | /* We're working with a live target. */ |
10085 | ts->from_file = 0; | |
10086 | ||
10087 | /* Set some defaults. */ | |
10088 | ts->running_known = 0; | |
10089 | ts->stop_reason = trace_stop_reason_unknown; | |
10090 | ts->traceframe_count = -1; | |
10091 | ts->buffer_free = 0; | |
10092 | ||
10093 | if (*p++ != 'T') | |
35b1e5cc SS |
10094 | error (_("Bogus trace status reply from target: %s"), target_buf); |
10095 | ||
00bf0b85 SS |
10096 | parse_trace_status (p, ts); |
10097 | ||
10098 | return ts->running; | |
35b1e5cc SS |
10099 | } |
10100 | ||
10101 | static void | |
ad91cd99 | 10102 | remote_trace_stop (void) |
35b1e5cc SS |
10103 | { |
10104 | putpkt ("QTStop"); | |
10105 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
10106 | if (*target_buf == '\0') |
10107 | error (_("Target does not support this command.")); | |
10108 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
10109 | error (_("Bogus reply from target: %s"), target_buf); |
10110 | } | |
10111 | ||
10112 | static int | |
10113 | remote_trace_find (enum trace_find_type type, int num, | |
10114 | ULONGEST addr1, ULONGEST addr2, | |
10115 | int *tpp) | |
10116 | { | |
10117 | struct remote_state *rs = get_remote_state (); | |
10118 | char *p, *reply; | |
10119 | int target_frameno = -1, target_tracept = -1; | |
10120 | ||
e6e4e701 PA |
10121 | /* Lookups other than by absolute frame number depend on the current |
10122 | trace selected, so make sure it is correct on the remote end | |
10123 | first. */ | |
10124 | if (type != tfind_number) | |
10125 | set_remote_traceframe (); | |
10126 | ||
35b1e5cc SS |
10127 | p = rs->buf; |
10128 | strcpy (p, "QTFrame:"); | |
10129 | p = strchr (p, '\0'); | |
10130 | switch (type) | |
10131 | { | |
10132 | case tfind_number: | |
10133 | sprintf (p, "%x", num); | |
10134 | break; | |
10135 | case tfind_pc: | |
00bf0b85 | 10136 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10137 | break; |
10138 | case tfind_tp: | |
10139 | sprintf (p, "tdp:%x", num); | |
10140 | break; | |
10141 | case tfind_range: | |
00bf0b85 | 10142 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10143 | break; |
10144 | case tfind_outside: | |
00bf0b85 | 10145 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10146 | break; |
10147 | default: | |
9b20d036 | 10148 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
10149 | } |
10150 | ||
10151 | putpkt (rs->buf); | |
10152 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10153 | if (*reply == '\0') |
10154 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10155 | |
10156 | while (reply && *reply) | |
10157 | switch (*reply) | |
10158 | { | |
10159 | case 'F': | |
f197e0f1 VP |
10160 | p = ++reply; |
10161 | target_frameno = (int) strtol (p, &reply, 16); | |
10162 | if (reply == p) | |
10163 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
10164 | /* Don't update our remote traceframe number cache on failure |
10165 | to select a remote traceframe. */ | |
f197e0f1 VP |
10166 | if (target_frameno == -1) |
10167 | return -1; | |
35b1e5cc SS |
10168 | break; |
10169 | case 'T': | |
f197e0f1 VP |
10170 | p = ++reply; |
10171 | target_tracept = (int) strtol (p, &reply, 16); | |
10172 | if (reply == p) | |
10173 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10174 | break; |
10175 | case 'O': /* "OK"? */ | |
10176 | if (reply[1] == 'K' && reply[2] == '\0') | |
10177 | reply += 2; | |
10178 | else | |
10179 | error (_("Bogus reply from target: %s"), reply); | |
10180 | break; | |
10181 | default: | |
10182 | error (_("Bogus reply from target: %s"), reply); | |
10183 | } | |
10184 | if (tpp) | |
10185 | *tpp = target_tracept; | |
e6e4e701 PA |
10186 | |
10187 | remote_traceframe_number = target_frameno; | |
35b1e5cc SS |
10188 | return target_frameno; |
10189 | } | |
10190 | ||
10191 | static int | |
10192 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10193 | { | |
10194 | struct remote_state *rs = get_remote_state (); | |
10195 | char *reply; | |
10196 | ULONGEST uval; | |
10197 | ||
e6e4e701 PA |
10198 | set_remote_traceframe (); |
10199 | ||
35b1e5cc SS |
10200 | sprintf (rs->buf, "qTV:%x", tsvnum); |
10201 | putpkt (rs->buf); | |
10202 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10203 | if (reply && *reply) | |
10204 | { | |
10205 | if (*reply == 'V') | |
10206 | { | |
10207 | unpack_varlen_hex (reply + 1, &uval); | |
10208 | *val = (LONGEST) uval; | |
10209 | return 1; | |
10210 | } | |
10211 | } | |
10212 | return 0; | |
10213 | } | |
10214 | ||
00bf0b85 | 10215 | static int |
011aacb0 | 10216 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10217 | { |
10218 | struct remote_state *rs = get_remote_state (); | |
10219 | char *p, *reply; | |
10220 | ||
10221 | p = rs->buf; | |
10222 | strcpy (p, "QTSave:"); | |
10223 | p += strlen (p); | |
10224 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10225 | error (_("Remote file name too long for trace save packet")); | |
10226 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10227 | *p++ = '\0'; | |
10228 | putpkt (rs->buf); | |
ad91cd99 PA |
10229 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10230 | if (*reply != '\0') | |
10231 | error (_("Target does not support this command.")); | |
10232 | if (strcmp (reply, "OK") != 0) | |
10233 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10234 | return 0; |
10235 | } | |
10236 | ||
10237 | /* This is basically a memory transfer, but needs to be its own packet | |
10238 | because we don't know how the target actually organizes its trace | |
10239 | memory, plus we want to be able to ask for as much as possible, but | |
10240 | not be unhappy if we don't get as much as we ask for. */ | |
10241 | ||
10242 | static LONGEST | |
10243 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10244 | { | |
10245 | struct remote_state *rs = get_remote_state (); | |
10246 | char *reply; | |
10247 | char *p; | |
10248 | int rslt; | |
10249 | ||
10250 | p = rs->buf; | |
10251 | strcpy (p, "qTBuffer:"); | |
10252 | p += strlen (p); | |
10253 | p += hexnumstr (p, offset); | |
10254 | *p++ = ','; | |
10255 | p += hexnumstr (p, len); | |
10256 | *p++ = '\0'; | |
10257 | ||
10258 | putpkt (rs->buf); | |
10259 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10260 | if (reply && *reply) | |
10261 | { | |
10262 | /* 'l' by itself means we're at the end of the buffer and | |
10263 | there is nothing more to get. */ | |
10264 | if (*reply == 'l') | |
10265 | return 0; | |
10266 | ||
10267 | /* Convert the reply into binary. Limit the number of bytes to | |
10268 | convert according to our passed-in buffer size, rather than | |
10269 | what was returned in the packet; if the target is | |
10270 | unexpectedly generous and gives us a bigger reply than we | |
10271 | asked for, we don't want to crash. */ | |
10272 | rslt = hex2bin (target_buf, buf, len); | |
10273 | return rslt; | |
10274 | } | |
10275 | ||
10276 | /* Something went wrong, flag as an error. */ | |
10277 | return -1; | |
10278 | } | |
10279 | ||
35b1e5cc SS |
10280 | static void |
10281 | remote_set_disconnected_tracing (int val) | |
10282 | { | |
10283 | struct remote_state *rs = get_remote_state (); | |
10284 | ||
33da3f1c SS |
10285 | if (rs->disconnected_tracing) |
10286 | { | |
ad91cd99 PA |
10287 | char *reply; |
10288 | ||
33da3f1c SS |
10289 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10290 | putpkt (rs->buf); | |
ad91cd99 PA |
10291 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10292 | if (*reply == '\0') | |
33da3f1c | 10293 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10294 | if (strcmp (reply, "OK") != 0) |
10295 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10296 | } |
10297 | else if (val) | |
10298 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10299 | } |
10300 | ||
dc146f7c VP |
10301 | static int |
10302 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10303 | { | |
10304 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10305 | |
dc146f7c VP |
10306 | if (info && info->private) |
10307 | return info->private->core; | |
10308 | return -1; | |
10309 | } | |
10310 | ||
4daf5ac0 SS |
10311 | static void |
10312 | remote_set_circular_trace_buffer (int val) | |
10313 | { | |
10314 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10315 | char *reply; |
4daf5ac0 SS |
10316 | |
10317 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10318 | putpkt (rs->buf); | |
ad91cd99 PA |
10319 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10320 | if (*reply == '\0') | |
4daf5ac0 | 10321 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10322 | if (strcmp (reply, "OK") != 0) |
10323 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10324 | } |
10325 | ||
b3b9301e PA |
10326 | static struct traceframe_info * |
10327 | remote_traceframe_info (void) | |
10328 | { | |
10329 | char *text; | |
10330 | ||
10331 | text = target_read_stralloc (¤t_target, | |
10332 | TARGET_OBJECT_TRACEFRAME_INFO, NULL); | |
10333 | if (text != NULL) | |
10334 | { | |
10335 | struct traceframe_info *info; | |
10336 | struct cleanup *back_to = make_cleanup (xfree, text); | |
10337 | ||
10338 | info = parse_traceframe_info (text); | |
10339 | do_cleanups (back_to); | |
10340 | return info; | |
10341 | } | |
10342 | ||
10343 | return NULL; | |
10344 | } | |
10345 | ||
c906108c | 10346 | static void |
fba45db2 | 10347 | init_remote_ops (void) |
c906108c | 10348 | { |
c5aa993b | 10349 | remote_ops.to_shortname = "remote"; |
c906108c | 10350 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10351 | remote_ops.to_doc = |
c906108c | 10352 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10353 | Specify the serial device it is connected to\n\ |
10354 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10355 | remote_ops.to_open = remote_open; |
10356 | remote_ops.to_close = remote_close; | |
c906108c | 10357 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10358 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10359 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10360 | remote_ops.to_wait = remote_wait; |
10361 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10362 | remote_ops.to_store_registers = remote_store_registers; | |
10363 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10364 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10365 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10366 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10367 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10368 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10369 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
10370 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
10371 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10372 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
480a3f21 PW |
10373 | remote_ops.to_region_ok_for_hw_watchpoint |
10374 | = remote_region_ok_for_hw_watchpoint; | |
3c3bea1c GS |
10375 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; |
10376 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10377 | remote_ops.to_kill = remote_kill; |
10378 | remote_ops.to_load = generic_load; | |
c906108c | 10379 | remote_ops.to_mourn_inferior = remote_mourn; |
2455069d | 10380 | remote_ops.to_pass_signals = remote_pass_signals; |
c906108c | 10381 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10382 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10383 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10384 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10385 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10386 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10387 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10388 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10389 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10390 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10391 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10392 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10393 | remote_ops.to_has_memory = default_child_has_memory; | |
10394 | remote_ops.to_has_stack = default_child_has_stack; | |
10395 | remote_ops.to_has_registers = default_child_has_registers; | |
10396 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10397 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10398 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10399 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10400 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10401 | remote_ops.to_flash_erase = remote_flash_erase; |
10402 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10403 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10404 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10405 | remote_ops.to_can_async_p = remote_can_async_p; |
10406 | remote_ops.to_is_async_p = remote_is_async_p; | |
10407 | remote_ops.to_async = remote_async; | |
75c99385 PA |
10408 | remote_ops.to_terminal_inferior = remote_terminal_inferior; |
10409 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10410 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10411 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
d248b706 | 10412 | remote_ops.to_supports_enable_disable_tracepoint = remote_supports_enable_disable_tracepoint; |
35b1e5cc SS |
10413 | remote_ops.to_trace_init = remote_trace_init; |
10414 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
3e43a32a MS |
10415 | remote_ops.to_download_trace_state_variable |
10416 | = remote_download_trace_state_variable; | |
d248b706 KY |
10417 | remote_ops.to_enable_tracepoint = remote_enable_tracepoint; |
10418 | remote_ops.to_disable_tracepoint = remote_disable_tracepoint; | |
35b1e5cc SS |
10419 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10420 | remote_ops.to_trace_start = remote_trace_start; | |
10421 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
10422 | remote_ops.to_trace_stop = remote_trace_stop; | |
10423 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10424 | remote_ops.to_get_trace_state_variable_value |
10425 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10426 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10427 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10428 | remote_ops.to_upload_trace_state_variables |
10429 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10430 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
35b1e5cc | 10431 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10432 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
dc146f7c | 10433 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10434 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10435 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10436 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10437 | remote_ops.to_static_tracepoint_marker_at |
10438 | = remote_static_tracepoint_marker_at; | |
10439 | remote_ops.to_static_tracepoint_markers_by_strid | |
10440 | = remote_static_tracepoint_markers_by_strid; | |
b3b9301e | 10441 | remote_ops.to_traceframe_info = remote_traceframe_info; |
c906108c SS |
10442 | } |
10443 | ||
10444 | /* Set up the extended remote vector by making a copy of the standard | |
10445 | remote vector and adding to it. */ | |
10446 | ||
10447 | static void | |
fba45db2 | 10448 | init_extended_remote_ops (void) |
c906108c SS |
10449 | { |
10450 | extended_remote_ops = remote_ops; | |
10451 | ||
0f71a2f6 | 10452 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10453 | extended_remote_ops.to_longname = |
c906108c | 10454 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10455 | extended_remote_ops.to_doc = |
c906108c | 10456 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10457 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10458 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10459 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10460 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10461 | extended_remote_ops.to_detach = extended_remote_detach; |
10462 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10463 | extended_remote_ops.to_kill = extended_remote_kill; |
0f71a2f6 JM |
10464 | } |
10465 | ||
6426a772 JM |
10466 | static int |
10467 | remote_can_async_p (void) | |
10468 | { | |
c6ebd6cf | 10469 | if (!target_async_permitted) |
75c99385 PA |
10470 | /* We only enable async when the user specifically asks for it. */ |
10471 | return 0; | |
10472 | ||
23860348 | 10473 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10474 | return serial_can_async_p (remote_desc); |
6426a772 JM |
10475 | } |
10476 | ||
10477 | static int | |
10478 | remote_is_async_p (void) | |
10479 | { | |
c6ebd6cf | 10480 | if (!target_async_permitted) |
75c99385 PA |
10481 | /* We only enable async when the user specifically asks for it. */ |
10482 | return 0; | |
10483 | ||
23860348 | 10484 | /* We're async whenever the serial device is. */ |
3dd5b83d | 10485 | return serial_is_async_p (remote_desc); |
6426a772 JM |
10486 | } |
10487 | ||
2acceee2 JM |
10488 | /* Pass the SERIAL event on and up to the client. One day this code |
10489 | will be able to delay notifying the client of an event until the | |
23860348 | 10490 | point where an entire packet has been received. */ |
2acceee2 | 10491 | |
2bc416ba | 10492 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10493 | void *context); |
2acceee2 JM |
10494 | static void *async_client_context; |
10495 | static serial_event_ftype remote_async_serial_handler; | |
10496 | ||
6426a772 | 10497 | static void |
819cc324 | 10498 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10499 | { |
2acceee2 JM |
10500 | /* Don't propogate error information up to the client. Instead let |
10501 | the client find out about the error by querying the target. */ | |
10502 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10503 | } | |
10504 | ||
74531fed PA |
10505 | static void |
10506 | remote_async_inferior_event_handler (gdb_client_data data) | |
10507 | { | |
10508 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10509 | } | |
10510 | ||
10511 | static void | |
10512 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10513 | { | |
10514 | remote_get_pending_stop_replies (); | |
10515 | } | |
10516 | ||
2acceee2 | 10517 | static void |
2bc416ba | 10518 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10519 | void *context), void *context) |
2acceee2 JM |
10520 | { |
10521 | if (callback != NULL) | |
10522 | { | |
2cd58942 | 10523 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10524 | async_client_callback = callback; |
10525 | async_client_context = context; | |
10526 | } | |
10527 | else | |
2cd58942 | 10528 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10529 | } |
10530 | ||
5a2468f5 | 10531 | static void |
c2d11a7d | 10532 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10533 | { |
427c3a89 | 10534 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10535 | } |
10536 | ||
d471ea57 AC |
10537 | static void |
10538 | show_remote_cmd (char *args, int from_tty) | |
10539 | { | |
37a105a1 | 10540 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 10541 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
10542 | struct cleanup *showlist_chain; |
10543 | struct cmd_list_element *list = remote_show_cmdlist; | |
10544 | ||
10545 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
10546 | for (; list != NULL; list = list->next) | |
10547 | if (strcmp (list->name, "Z-packet") == 0) | |
10548 | continue; | |
427c3a89 DJ |
10549 | else if (list->type == not_set_cmd) |
10550 | /* Alias commands are exactly like the original, except they | |
10551 | don't have the normal type. */ | |
10552 | continue; | |
10553 | else | |
37a105a1 DJ |
10554 | { |
10555 | struct cleanup *option_chain | |
10556 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 10557 | |
37a105a1 DJ |
10558 | ui_out_field_string (uiout, "name", list->name); |
10559 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
10560 | if (list->type == show_cmd) |
10561 | do_setshow_command ((char *) NULL, from_tty, list); | |
10562 | else | |
10563 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
10564 | /* Close the tuple. */ |
10565 | do_cleanups (option_chain); | |
10566 | } | |
427c3a89 DJ |
10567 | |
10568 | /* Close the tuple. */ | |
10569 | do_cleanups (showlist_chain); | |
d471ea57 | 10570 | } |
5a2468f5 | 10571 | |
0f71a2f6 | 10572 | |
23860348 | 10573 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
10574 | static void |
10575 | remote_new_objfile (struct objfile *objfile) | |
10576 | { | |
23860348 | 10577 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 10578 | remote_check_symbols (objfile); |
dc8acb97 MS |
10579 | } |
10580 | ||
00bf0b85 SS |
10581 | /* Pull all the tracepoints defined on the target and create local |
10582 | data structures representing them. We don't want to create real | |
10583 | tracepoints yet, we don't want to mess up the user's existing | |
10584 | collection. */ | |
10585 | ||
10586 | static int | |
10587 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 10588 | { |
00bf0b85 SS |
10589 | struct remote_state *rs = get_remote_state (); |
10590 | char *p; | |
d5551862 | 10591 | |
00bf0b85 SS |
10592 | /* Ask for a first packet of tracepoint definition. */ |
10593 | putpkt ("qTfP"); | |
10594 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10595 | p = rs->buf; | |
10596 | while (*p && *p != 'l') | |
d5551862 | 10597 | { |
00bf0b85 SS |
10598 | parse_tracepoint_definition (p, utpp); |
10599 | /* Ask for another packet of tracepoint definition. */ | |
10600 | putpkt ("qTsP"); | |
10601 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10602 | p = rs->buf; | |
d5551862 | 10603 | } |
00bf0b85 | 10604 | return 0; |
d5551862 SS |
10605 | } |
10606 | ||
00bf0b85 SS |
10607 | static int |
10608 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 10609 | { |
00bf0b85 | 10610 | struct remote_state *rs = get_remote_state (); |
d5551862 | 10611 | char *p; |
d5551862 | 10612 | |
00bf0b85 SS |
10613 | /* Ask for a first packet of variable definition. */ |
10614 | putpkt ("qTfV"); | |
d5551862 SS |
10615 | getpkt (&rs->buf, &rs->buf_size, 0); |
10616 | p = rs->buf; | |
00bf0b85 | 10617 | while (*p && *p != 'l') |
d5551862 | 10618 | { |
00bf0b85 SS |
10619 | parse_tsv_definition (p, utsvp); |
10620 | /* Ask for another packet of variable definition. */ | |
10621 | putpkt ("qTsV"); | |
d5551862 SS |
10622 | getpkt (&rs->buf, &rs->buf_size, 0); |
10623 | p = rs->buf; | |
10624 | } | |
00bf0b85 | 10625 | return 0; |
d5551862 SS |
10626 | } |
10627 | ||
c906108c | 10628 | void |
fba45db2 | 10629 | _initialize_remote (void) |
c906108c | 10630 | { |
ea9c271d | 10631 | struct remote_state *rs; |
9a7071a8 JB |
10632 | struct cmd_list_element *cmd; |
10633 | char *cmd_name; | |
ea9c271d | 10634 | |
0f71a2f6 | 10635 | /* architecture specific data */ |
2bc416ba | 10636 | remote_gdbarch_data_handle = |
23860348 | 10637 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
10638 | remote_g_packet_data_handle = |
10639 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 10640 | |
ea9c271d DJ |
10641 | /* Initialize the per-target state. At the moment there is only one |
10642 | of these, not one per target. Only one target is active at a | |
10643 | time. The default buffer size is unimportant; it will be expanded | |
10644 | whenever a larger buffer is needed. */ | |
0b83947e | 10645 | rs = get_remote_state_raw (); |
ea9c271d DJ |
10646 | rs->buf_size = 400; |
10647 | rs->buf = xmalloc (rs->buf_size); | |
10648 | ||
c906108c SS |
10649 | init_remote_ops (); |
10650 | add_target (&remote_ops); | |
10651 | ||
10652 | init_extended_remote_ops (); | |
10653 | add_target (&extended_remote_ops); | |
cce74817 | 10654 | |
dc8acb97 | 10655 | /* Hook into new objfile notification. */ |
06d3b283 | 10656 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 10657 | |
b803fb0f DJ |
10658 | /* Set up signal handlers. */ |
10659 | sigint_remote_token = | |
10660 | create_async_signal_handler (async_remote_interrupt, NULL); | |
10661 | sigint_remote_twice_token = | |
6d549500 | 10662 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
b803fb0f | 10663 | |
c906108c SS |
10664 | #if 0 |
10665 | init_remote_threadtests (); | |
10666 | #endif | |
10667 | ||
23860348 | 10668 | /* set/show remote ... */ |
d471ea57 | 10669 | |
1bedd215 | 10670 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
10671 | Remote protocol specific variables\n\ |
10672 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10673 | the packets being used"), |
cff3e48b | 10674 | &remote_set_cmdlist, "set remote ", |
23860348 | 10675 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 10676 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
10677 | Remote protocol specific variables\n\ |
10678 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10679 | the packets being used"), |
cff3e48b | 10680 | &remote_show_cmdlist, "show remote ", |
23860348 | 10681 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 10682 | |
1a966eab AC |
10683 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
10684 | Compare section data on target to the exec file.\n\ | |
10685 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
10686 | &cmdlist); |
10687 | ||
1a966eab AC |
10688 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
10689 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
10690 | maintenance packet TEXT\n\ |
10691 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
10692 | this command sends the string TEXT to the inferior, and displays the\n\ | |
10693 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 10694 | terminating `#' character and checksum."), |
c906108c SS |
10695 | &maintenancelist); |
10696 | ||
7915a72c AC |
10697 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
10698 | Set whether to send break if interrupted."), _("\ | |
10699 | Show whether to send break if interrupted."), _("\ | |
10700 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 10701 | set_remotebreak, show_remotebreak, |
e707bbc2 | 10702 | &setlist, &showlist); |
9a7071a8 JB |
10703 | cmd_name = "remotebreak"; |
10704 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
10705 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
10706 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
10707 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
10708 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
10709 | ||
10710 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
10711 | interrupt_sequence_modes, &interrupt_sequence_mode, |
10712 | _("\ | |
9a7071a8 JB |
10713 | Set interrupt sequence to remote target."), _("\ |
10714 | Show interrupt sequence to remote target."), _("\ | |
10715 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
10716 | NULL, show_interrupt_sequence, | |
10717 | &remote_set_cmdlist, | |
10718 | &remote_show_cmdlist); | |
10719 | ||
10720 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
10721 | &interrupt_on_connect, _("\ | |
10722 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10723 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10724 | If set, interrupt sequence is sent to remote target."), | |
10725 | NULL, NULL, | |
10726 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 10727 | |
23860348 | 10728 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 10729 | |
1a966eab AC |
10730 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
10731 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 10732 | &setlist); |
1a966eab AC |
10733 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
10734 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
10735 | &showlist); |
10736 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
10737 | set_memory_write_packet_size, _("\ |
10738 | Set the maximum number of bytes per memory-write packet.\n\ | |
10739 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10740 | default packet size. The actual limit is further reduced\n\ | |
10741 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10742 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10743 | &remote_set_cmdlist); |
10744 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
10745 | set_memory_read_packet_size, _("\ |
10746 | Set the maximum number of bytes per memory-read packet.\n\ | |
10747 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10748 | default packet size. The actual limit is further reduced\n\ | |
10749 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10750 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10751 | &remote_set_cmdlist); |
10752 | add_cmd ("memory-write-packet-size", no_class, | |
10753 | show_memory_write_packet_size, | |
1a966eab | 10754 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
10755 | &remote_show_cmdlist); |
10756 | add_cmd ("memory-read-packet-size", no_class, | |
10757 | show_memory_read_packet_size, | |
1a966eab | 10758 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 10759 | &remote_show_cmdlist); |
c906108c | 10760 | |
b3f42336 | 10761 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
10762 | &remote_hw_watchpoint_limit, _("\ |
10763 | Set the maximum number of target hardware watchpoints."), _("\ | |
10764 | Show the maximum number of target hardware watchpoints."), _("\ | |
10765 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
10766 | NULL, NULL, /* FIXME: i18n: The maximum |
10767 | number of target hardware | |
10768 | watchpoints is %s. */ | |
b3f42336 | 10769 | &remote_set_cmdlist, &remote_show_cmdlist); |
480a3f21 PW |
10770 | add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class, |
10771 | &remote_hw_watchpoint_length_limit, _("\ | |
10772 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
10773 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
10774 | Specify a negative limit for unlimited."), | |
10775 | NULL, NULL, /* FIXME: i18n: The maximum | |
10776 | length (in bytes) of a target | |
10777 | hardware watchpoint is %s. */ | |
10778 | &remote_set_cmdlist, &remote_show_cmdlist); | |
b3f42336 | 10779 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
10780 | &remote_hw_breakpoint_limit, _("\ |
10781 | Set the maximum number of target hardware breakpoints."), _("\ | |
10782 | Show the maximum number of target hardware breakpoints."), _("\ | |
10783 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
10784 | NULL, NULL, /* FIXME: i18n: The maximum |
10785 | number of target hardware | |
10786 | breakpoints is %s. */ | |
b3f42336 | 10787 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 10788 | |
4d28ad1e AC |
10789 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
10790 | &remote_address_size, _("\ | |
10791 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
10792 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
10793 | NULL, | |
10794 | NULL, /* FIXME: i18n: */ | |
10795 | &setlist, &showlist); | |
c906108c | 10796 | |
444abaca | 10797 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 10798 | "X", "binary-download", 1); |
0f71a2f6 | 10799 | |
444abaca | 10800 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 10801 | "vCont", "verbose-resume", 0); |
506fb367 | 10802 | |
89be2091 DJ |
10803 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
10804 | "QPassSignals", "pass-signals", 0); | |
10805 | ||
444abaca | 10806 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 10807 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 10808 | |
444abaca | 10809 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 10810 | "P", "set-register", 1); |
d471ea57 | 10811 | |
444abaca | 10812 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 10813 | "p", "fetch-register", 1); |
b96ec7ac | 10814 | |
444abaca | 10815 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 10816 | "Z0", "software-breakpoint", 0); |
d471ea57 | 10817 | |
444abaca | 10818 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 10819 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 10820 | |
444abaca | 10821 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 10822 | "Z2", "write-watchpoint", 0); |
d471ea57 | 10823 | |
444abaca | 10824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 10825 | "Z3", "read-watchpoint", 0); |
d471ea57 | 10826 | |
444abaca | 10827 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 10828 | "Z4", "access-watchpoint", 0); |
d471ea57 | 10829 | |
0876f84a DJ |
10830 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
10831 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 10832 | |
23181151 DJ |
10833 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
10834 | "qXfer:features:read", "target-features", 0); | |
10835 | ||
cfa9d6d9 DJ |
10836 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
10837 | "qXfer:libraries:read", "library-info", 0); | |
10838 | ||
fd79ecee DJ |
10839 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
10840 | "qXfer:memory-map:read", "memory-map", 0); | |
10841 | ||
0e7f50da UW |
10842 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
10843 | "qXfer:spu:read", "read-spu-object", 0); | |
10844 | ||
10845 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
10846 | "qXfer:spu:write", "write-spu-object", 0); | |
10847 | ||
07e059b5 VP |
10848 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
10849 | "qXfer:osdata:read", "osdata", 0); | |
10850 | ||
dc146f7c VP |
10851 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
10852 | "qXfer:threads:read", "threads", 0); | |
10853 | ||
4aa995e1 PA |
10854 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
10855 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
10856 | ||
10857 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
10858 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
10859 | ||
b3b9301e PA |
10860 | add_packet_config_cmd |
10861 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
10862 | "qXfer:trace-frame-info:read", "traceframe-info", 0); | |
10863 | ||
444abaca | 10864 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 10865 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
10866 | 0); |
10867 | ||
711e434b PM |
10868 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
10869 | "qGetTIBAddr", "get-thread-information-block-address", | |
10870 | 0); | |
10871 | ||
40ab02ce MS |
10872 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
10873 | "bc", "reverse-continue", 0); | |
10874 | ||
10875 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
10876 | "bs", "reverse-step", 0); | |
10877 | ||
be2a5f71 DJ |
10878 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
10879 | "qSupported", "supported-packets", 0); | |
10880 | ||
08388c79 DE |
10881 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
10882 | "qSearch:memory", "search-memory", 0); | |
10883 | ||
a6b151f1 DJ |
10884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
10885 | "vFile:open", "hostio-open", 0); | |
10886 | ||
10887 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
10888 | "vFile:pread", "hostio-pread", 0); | |
10889 | ||
10890 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
10891 | "vFile:pwrite", "hostio-pwrite", 0); | |
10892 | ||
10893 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
10894 | "vFile:close", "hostio-close", 0); | |
10895 | ||
10896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
10897 | "vFile:unlink", "hostio-unlink", 0); | |
10898 | ||
2d717e4f DJ |
10899 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
10900 | "vAttach", "attach", 0); | |
10901 | ||
10902 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
10903 | "vRun", "run", 0); | |
10904 | ||
a6f3e723 SL |
10905 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
10906 | "QStartNoAckMode", "noack", 0); | |
10907 | ||
82f73884 PA |
10908 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
10909 | "vKill", "kill", 0); | |
10910 | ||
0b16c5cf PA |
10911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
10912 | "qAttached", "query-attached", 0); | |
10913 | ||
782b2b07 | 10914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
10915 | "ConditionalTracepoints", |
10916 | "conditional-tracepoints", 0); | |
7a697b8d SS |
10917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
10918 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 10919 | |
409873ef SS |
10920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
10921 | "TracepointSource", "TracepointSource", 0); | |
10922 | ||
d914c394 SS |
10923 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
10924 | "QAllow", "allow", 0); | |
10925 | ||
0fb4aa4b PA |
10926 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
10927 | "StaticTracepoints", "static-tracepoints", 0); | |
10928 | ||
10929 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], | |
10930 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
10931 | ||
37a105a1 DJ |
10932 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
10933 | Z sub-packet has its own set and show commands, but users may | |
10934 | have sets to this variable in their .gdbinit files (or in their | |
10935 | documentation). */ | |
e9e68a56 | 10936 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
10937 | &remote_Z_packet_detect, _("\ |
10938 | Set use of remote protocol `Z' packets"), _("\ | |
10939 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 10940 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 10941 | packets."), |
e9e68a56 | 10942 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
10943 | show_remote_protocol_Z_packet_cmd, |
10944 | /* FIXME: i18n: Use of remote protocol | |
10945 | `Z' packets is %s. */ | |
e9e68a56 | 10946 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 10947 | |
a6b151f1 DJ |
10948 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
10949 | Manipulate files on the remote system\n\ | |
10950 | Transfer files to and from the remote target system."), | |
10951 | &remote_cmdlist, "remote ", | |
10952 | 0 /* allow-unknown */, &cmdlist); | |
10953 | ||
10954 | add_cmd ("put", class_files, remote_put_command, | |
10955 | _("Copy a local file to the remote system."), | |
10956 | &remote_cmdlist); | |
10957 | ||
10958 | add_cmd ("get", class_files, remote_get_command, | |
10959 | _("Copy a remote file to the local system."), | |
10960 | &remote_cmdlist); | |
10961 | ||
10962 | add_cmd ("delete", class_files, remote_delete_command, | |
10963 | _("Delete a remote file."), | |
10964 | &remote_cmdlist); | |
10965 | ||
2d717e4f DJ |
10966 | remote_exec_file = xstrdup (""); |
10967 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
10968 | &remote_exec_file, _("\ | |
10969 | Set the remote pathname for \"run\""), _("\ | |
10970 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
10971 | &remote_set_cmdlist, &remote_show_cmdlist); | |
10972 | ||
449092f6 CV |
10973 | /* Eventually initialize fileio. See fileio.c */ |
10974 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
10975 | |
10976 | /* Take advantage of the fact that the LWP field is not used, to tag | |
10977 | special ptids with it set to != 0. */ | |
82f73884 PA |
10978 | magic_null_ptid = ptid_build (42000, 1, -1); |
10979 | not_sent_ptid = ptid_build (42000, 1, -2); | |
10980 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
10981 | |
10982 | target_buf_size = 2048; | |
10983 | target_buf = xmalloc (target_buf_size); | |
c906108c | 10984 | } |
10760264 | 10985 |