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 | ||
71 | /* temp hacks for tracepoint encoding migration */ | |
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 | ||
137 | static int remote_async_mask (int new_mask); | |
138 | ||
136d6dae | 139 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 140 | |
a14ed312 | 141 | static void remote_interrupt (int signo); |
c906108c | 142 | |
a14ed312 | 143 | static void remote_interrupt_twice (int signo); |
7a292a7a | 144 | |
a14ed312 | 145 | static void interrupt_query (void); |
c906108c | 146 | |
79d7f229 PA |
147 | static void set_general_thread (struct ptid ptid); |
148 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 149 | |
a14ed312 | 150 | static void get_offsets (void); |
c906108c | 151 | |
6d820c5c DJ |
152 | static void skip_frame (void); |
153 | ||
154 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumlen (ULONGEST num); |
c906108c | 157 | |
a14ed312 | 158 | static void init_remote_ops (void); |
c906108c | 159 | |
a14ed312 | 160 | static void init_extended_remote_ops (void); |
c906108c | 161 | |
94cc34af | 162 | static void remote_stop (ptid_t); |
c906108c | 163 | |
a14ed312 | 164 | static int ishex (int ch, int *val); |
c906108c | 165 | |
a14ed312 | 166 | static int stubhex (int ch); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumstr (char *, ULONGEST); |
c906108c | 169 | |
a14ed312 | 170 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 171 | |
a14ed312 | 172 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 173 | |
a14ed312 | 174 | static void print_packet (char *); |
c906108c | 175 | |
a14ed312 | 176 | static void compare_sections_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void packet_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 181 | |
39f77062 | 182 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 183 | |
a14ed312 | 184 | static void remote_find_new_threads (void); |
c906108c | 185 | |
79d7f229 | 186 | static void record_currthread (ptid_t currthread); |
c906108c | 187 | |
30559e10 | 188 | static int fromhex (int a); |
c906108c | 189 | |
00bf0b85 | 190 | extern int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 191 | |
00bf0b85 | 192 | extern int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 193 | |
a14ed312 | 194 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 195 | |
a14ed312 | 196 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 197 | |
5a2468f5 | 198 | struct packet_config; |
5a2468f5 | 199 | |
a14ed312 | 200 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 201 | |
d471ea57 | 202 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 203 | |
bb572ddd DJ |
204 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
205 | struct cmd_list_element *c); | |
206 | ||
207 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
208 | int from_tty, | |
209 | struct cmd_list_element *c, | |
210 | const char *value); | |
211 | ||
82f73884 PA |
212 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
213 | static ptid_t read_ptid (char *buf, char **obuf); | |
214 | ||
d914c394 SS |
215 | static void remote_set_permissions (void); |
216 | ||
d5551862 | 217 | struct remote_state; |
00bf0b85 | 218 | static int remote_get_trace_status (struct trace_status *ts); |
d5551862 | 219 | |
00bf0b85 SS |
220 | static int remote_upload_tracepoints (struct uploaded_tp **utpp); |
221 | ||
222 | static int remote_upload_trace_state_variables (struct uploaded_tsv **utsvp); | |
223 | ||
c8d104ad PA |
224 | static void remote_query_supported (void); |
225 | ||
226 | static void remote_check_symbols (struct objfile *objfile); | |
227 | ||
a14ed312 | 228 | void _initialize_remote (void); |
c906108c | 229 | |
74531fed PA |
230 | struct stop_reply; |
231 | static struct stop_reply *stop_reply_xmalloc (void); | |
232 | static void stop_reply_xfree (struct stop_reply *); | |
233 | static void do_stop_reply_xfree (void *arg); | |
234 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
235 | static void push_stop_reply (struct stop_reply *); | |
236 | static void remote_get_pending_stop_replies (void); | |
237 | static void discard_pending_stop_replies (int pid); | |
238 | static int peek_stop_reply (ptid_t ptid); | |
239 | ||
240 | static void remote_async_inferior_event_handler (gdb_client_data); | |
241 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
242 | ||
d3fd5342 PA |
243 | static void remote_terminal_ours (void); |
244 | ||
d962ef82 DJ |
245 | static int remote_read_description_p (struct target_ops *target); |
246 | ||
176a6961 | 247 | static void remote_console_output (char *msg); |
dde08ee1 | 248 | |
74531fed PA |
249 | /* The non-stop remote protocol provisions for one pending stop reply. |
250 | This is where we keep it until it is acknowledged. */ | |
251 | ||
252 | static struct stop_reply *pending_stop_reply = NULL; | |
253 | ||
a6b151f1 DJ |
254 | /* For "remote". */ |
255 | ||
256 | static struct cmd_list_element *remote_cmdlist; | |
257 | ||
bb572ddd DJ |
258 | /* For "set remote" and "show remote". */ |
259 | ||
260 | static struct cmd_list_element *remote_set_cmdlist; | |
261 | static struct cmd_list_element *remote_show_cmdlist; | |
262 | ||
ea9c271d DJ |
263 | /* Description of the remote protocol state for the currently |
264 | connected target. This is per-target state, and independent of the | |
265 | selected architecture. */ | |
266 | ||
267 | struct remote_state | |
268 | { | |
269 | /* A buffer to use for incoming packets, and its current size. The | |
270 | buffer is grown dynamically for larger incoming packets. | |
271 | Outgoing packets may also be constructed in this buffer. | |
272 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
273 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
274 | packets. */ | |
275 | char *buf; | |
276 | long buf_size; | |
be2a5f71 DJ |
277 | |
278 | /* If we negotiated packet size explicitly (and thus can bypass | |
279 | heuristics for the largest packet size that will not overflow | |
280 | a buffer in the stub), this will be set to that packet size. | |
281 | Otherwise zero, meaning to use the guessed size. */ | |
282 | long explicit_packet_size; | |
2d717e4f DJ |
283 | |
284 | /* remote_wait is normally called when the target is running and | |
285 | waits for a stop reply packet. But sometimes we need to call it | |
286 | when the target is already stopped. We can send a "?" packet | |
287 | and have remote_wait read the response. Or, if we already have | |
288 | the response, we can stash it in BUF and tell remote_wait to | |
289 | skip calling getpkt. This flag is set when BUF contains a | |
290 | stop reply packet and the target is not waiting. */ | |
291 | int cached_wait_status; | |
a6f3e723 SL |
292 | |
293 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
294 | expect acks from each other. The connection is assumed to be | |
295 | reliable. */ | |
296 | int noack_mode; | |
82f73884 PA |
297 | |
298 | /* True if we're connected in extended remote mode. */ | |
299 | int extended; | |
300 | ||
301 | /* True if the stub reported support for multi-process | |
302 | extensions. */ | |
303 | int multi_process_aware; | |
e24a49d8 PA |
304 | |
305 | /* True if we resumed the target and we're waiting for the target to | |
306 | stop. In the mean time, we can't start another command/query. | |
307 | The remote server wouldn't be ready to process it, so we'd | |
308 | timeout waiting for a reply that would never come and eventually | |
309 | we'd close the connection. This can happen in asynchronous mode | |
310 | because we allow GDB commands while the target is running. */ | |
311 | int waiting_for_stop_reply; | |
74531fed PA |
312 | |
313 | /* True if the stub reports support for non-stop mode. */ | |
314 | int non_stop_aware; | |
315 | ||
316 | /* True if the stub reports support for vCont;t. */ | |
317 | int support_vCont_t; | |
782b2b07 SS |
318 | |
319 | /* True if the stub reports support for conditional tracepoints. */ | |
320 | int cond_tracepoints; | |
3a29589a | 321 | |
7a697b8d SS |
322 | /* True if the stub reports support for fast tracepoints. */ |
323 | int fast_tracepoints; | |
324 | ||
0fb4aa4b PA |
325 | /* True if the stub reports support for static tracepoints. */ |
326 | int static_tracepoints; | |
327 | ||
d5551862 SS |
328 | /* True if the stub can continue running a trace while GDB is |
329 | disconnected. */ | |
330 | int disconnected_tracing; | |
331 | ||
3a29589a DJ |
332 | /* Nonzero if the user has pressed Ctrl-C, but the target hasn't |
333 | responded to that. */ | |
334 | int ctrlc_pending_p; | |
ea9c271d DJ |
335 | }; |
336 | ||
dc146f7c VP |
337 | /* Private data that we'll store in (struct thread_info)->private. */ |
338 | struct private_thread_info | |
339 | { | |
340 | char *extra; | |
341 | int core; | |
342 | }; | |
343 | ||
344 | static void | |
345 | free_private_thread_info (struct private_thread_info *info) | |
346 | { | |
347 | xfree (info->extra); | |
348 | xfree (info); | |
349 | } | |
350 | ||
82f73884 PA |
351 | /* Returns true if the multi-process extensions are in effect. */ |
352 | static int | |
353 | remote_multi_process_p (struct remote_state *rs) | |
354 | { | |
355 | return rs->extended && rs->multi_process_aware; | |
356 | } | |
357 | ||
ea9c271d DJ |
358 | /* This data could be associated with a target, but we do not always |
359 | have access to the current target when we need it, so for now it is | |
360 | static. This will be fine for as long as only one target is in use | |
361 | at a time. */ | |
362 | static struct remote_state remote_state; | |
363 | ||
364 | static struct remote_state * | |
0b83947e | 365 | get_remote_state_raw (void) |
ea9c271d DJ |
366 | { |
367 | return &remote_state; | |
368 | } | |
369 | ||
370 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 371 | |
ad10f812 AC |
372 | struct packet_reg |
373 | { | |
374 | long offset; /* Offset into G packet. */ | |
375 | long regnum; /* GDB's internal register number. */ | |
376 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 377 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 378 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 379 | at present. */ |
1cf3db46 | 380 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 381 | at present. */ |
ad10f812 AC |
382 | }; |
383 | ||
ea9c271d | 384 | struct remote_arch_state |
d01949b6 | 385 | { |
ad10f812 AC |
386 | /* Description of the remote protocol registers. */ |
387 | long sizeof_g_packet; | |
b323314b AC |
388 | |
389 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 390 | (making an array gdbarch_num_regs in size). */ |
b323314b | 391 | struct packet_reg *regs; |
ad10f812 | 392 | |
d01949b6 AC |
393 | /* This is the size (in chars) of the first response to the ``g'' |
394 | packet. It is used as a heuristic when determining the maximum | |
395 | size of memory-read and memory-write packets. A target will | |
396 | typically only reserve a buffer large enough to hold the ``g'' | |
397 | packet. The size does not include packet overhead (headers and | |
23860348 | 398 | trailers). */ |
d01949b6 AC |
399 | long actual_register_packet_size; |
400 | ||
401 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 402 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
403 | long remote_packet_size; |
404 | }; | |
405 | ||
35b1e5cc SS |
406 | long sizeof_pkt = 2000; |
407 | ||
408 | /* Utility: generate error from an incoming stub packet. */ | |
409 | static void | |
410 | trace_error (char *buf) | |
411 | { | |
412 | if (*buf++ != 'E') | |
413 | return; /* not an error msg */ | |
414 | switch (*buf) | |
415 | { | |
416 | case '1': /* malformed packet error */ | |
417 | if (*++buf == '0') /* general case: */ | |
418 | error (_("remote.c: error in outgoing packet.")); | |
419 | else | |
420 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
421 | strtol (buf, NULL, 16)); | |
422 | case '2': | |
423 | error (_("trace API error 0x%s."), ++buf); | |
424 | default: | |
425 | error (_("Target returns error code '%s'."), buf); | |
426 | } | |
427 | } | |
428 | ||
429 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
430 | static char * | |
431 | remote_get_noisy_reply (char **buf_p, | |
432 | long *sizeof_buf) | |
433 | { | |
434 | do /* Loop on reply from remote stub. */ | |
435 | { | |
436 | char *buf; | |
a744cf53 | 437 | |
35b1e5cc SS |
438 | QUIT; /* allow user to bail out with ^C */ |
439 | getpkt (buf_p, sizeof_buf, 0); | |
440 | buf = *buf_p; | |
ad91cd99 | 441 | if (buf[0] == 'E') |
35b1e5cc | 442 | trace_error (buf); |
dde08ee1 PA |
443 | else if (strncmp (buf, "qRelocInsn:", strlen ("qRelocInsn:")) == 0) |
444 | { | |
445 | ULONGEST ul; | |
446 | CORE_ADDR from, to, org_to; | |
447 | char *p, *pp; | |
448 | int adjusted_size = 0; | |
449 | volatile struct gdb_exception ex; | |
450 | ||
451 | p = buf + strlen ("qRelocInsn:"); | |
452 | pp = unpack_varlen_hex (p, &ul); | |
453 | if (*pp != ';') | |
cb91c06a | 454 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
455 | from = ul; |
456 | ||
457 | p = pp + 1; | |
458 | pp = unpack_varlen_hex (p, &ul); | |
459 | to = ul; | |
460 | ||
461 | org_to = to; | |
462 | ||
463 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
464 | { | |
465 | gdbarch_relocate_instruction (target_gdbarch, &to, from); | |
466 | } | |
467 | if (ex.reason >= 0) | |
468 | { | |
469 | adjusted_size = to - org_to; | |
470 | ||
471 | sprintf (buf, "qRelocInsn:%x", adjusted_size); | |
472 | putpkt (buf); | |
473 | } | |
474 | else if (ex.reason < 0 && ex.error == MEMORY_ERROR) | |
475 | { | |
476 | /* Propagate memory errors silently back to the target. | |
477 | The stub may have limited the range of addresses we | |
478 | can write to, for example. */ | |
479 | putpkt ("E01"); | |
480 | } | |
481 | else | |
482 | { | |
483 | /* Something unexpectedly bad happened. Be verbose so | |
484 | we can tell what, and propagate the error back to the | |
485 | stub, so it doesn't get stuck waiting for a | |
486 | response. */ | |
487 | exception_fprintf (gdb_stderr, ex, | |
488 | _("warning: relocating instruction: ")); | |
489 | putpkt ("E01"); | |
490 | } | |
491 | } | |
ad91cd99 | 492 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
493 | remote_console_output (buf + 1); /* 'O' message from stub */ |
494 | else | |
495 | return buf; /* here's the actual reply */ | |
496 | } | |
497 | while (1); | |
498 | } | |
3c3bea1c | 499 | |
d01949b6 AC |
500 | /* Handle for retreving the remote protocol data from gdbarch. */ |
501 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
502 | ||
ea9c271d DJ |
503 | static struct remote_arch_state * |
504 | get_remote_arch_state (void) | |
d01949b6 | 505 | { |
1cf3db46 | 506 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
507 | } |
508 | ||
0b83947e DJ |
509 | /* Fetch the global remote target state. */ |
510 | ||
511 | static struct remote_state * | |
512 | get_remote_state (void) | |
513 | { | |
514 | /* Make sure that the remote architecture state has been | |
515 | initialized, because doing so might reallocate rs->buf. Any | |
516 | function which calls getpkt also needs to be mindful of changes | |
517 | to rs->buf, but this call limits the number of places which run | |
518 | into trouble. */ | |
519 | get_remote_arch_state (); | |
520 | ||
521 | return get_remote_state_raw (); | |
522 | } | |
523 | ||
74ca34ce DJ |
524 | static int |
525 | compare_pnums (const void *lhs_, const void *rhs_) | |
526 | { | |
527 | const struct packet_reg * const *lhs = lhs_; | |
528 | const struct packet_reg * const *rhs = rhs_; | |
529 | ||
530 | if ((*lhs)->pnum < (*rhs)->pnum) | |
531 | return -1; | |
532 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
533 | return 0; | |
534 | else | |
535 | return 1; | |
536 | } | |
537 | ||
d01949b6 AC |
538 | static void * |
539 | init_remote_state (struct gdbarch *gdbarch) | |
540 | { | |
74ca34ce | 541 | int regnum, num_remote_regs, offset; |
0b83947e | 542 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 543 | struct remote_arch_state *rsa; |
74ca34ce | 544 | struct packet_reg **remote_regs; |
ea9c271d DJ |
545 | |
546 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 547 | |
123dc839 DJ |
548 | /* Use the architecture to build a regnum<->pnum table, which will be |
549 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 550 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 551 | gdbarch_num_regs (gdbarch), |
f57d151a | 552 | struct packet_reg); |
4a22f64d | 553 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 554 | { |
ea9c271d | 555 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 556 | |
4a22f64d | 557 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
558 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
559 | r->pnum = -1; | |
560 | else | |
561 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
562 | ||
b323314b | 563 | r->regnum = regnum; |
74ca34ce DJ |
564 | } |
565 | ||
566 | /* Define the g/G packet format as the contents of each register | |
567 | with a remote protocol number, in order of ascending protocol | |
568 | number. */ | |
569 | ||
4a22f64d UW |
570 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
571 | * sizeof (struct packet_reg *)); | |
f57d151a | 572 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 573 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 574 | regnum++) |
74ca34ce DJ |
575 | if (rsa->regs[regnum].pnum != -1) |
576 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 577 | |
74ca34ce DJ |
578 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
579 | compare_pnums); | |
580 | ||
581 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
582 | { | |
583 | remote_regs[regnum]->in_g_packet = 1; | |
584 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 585 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
586 | } |
587 | ||
74ca34ce DJ |
588 | /* Record the maximum possible size of the g packet - it may turn out |
589 | to be smaller. */ | |
590 | rsa->sizeof_g_packet = offset; | |
591 | ||
d01949b6 AC |
592 | /* Default maximum number of characters in a packet body. Many |
593 | remote stubs have a hardwired buffer size of 400 bytes | |
594 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
595 | as the maximum packet-size to ensure that the packet and an extra | |
596 | NUL character can always fit in the buffer. This stops GDB | |
597 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
598 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
599 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 600 | |
ea9c271d DJ |
601 | /* This one is filled in when a ``g'' packet is received. */ |
602 | rsa->actual_register_packet_size = 0; | |
603 | ||
604 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
605 | default, adjust the size accordingly. Remember that each byte is |
606 | encoded as two characters. 32 is the overhead for the packet | |
607 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 608 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 609 | little. */ |
ea9c271d DJ |
610 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
611 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 612 | |
ea9c271d DJ |
613 | /* Make sure that the packet buffer is plenty big enough for |
614 | this architecture. */ | |
615 | if (rs->buf_size < rsa->remote_packet_size) | |
616 | { | |
617 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 618 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 619 | } |
6d820c5c | 620 | |
ea9c271d DJ |
621 | return rsa; |
622 | } | |
623 | ||
624 | /* Return the current allowed size of a remote packet. This is | |
625 | inferred from the current architecture, and should be used to | |
626 | limit the length of outgoing packets. */ | |
627 | static long | |
628 | get_remote_packet_size (void) | |
629 | { | |
be2a5f71 | 630 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
631 | struct remote_arch_state *rsa = get_remote_arch_state (); |
632 | ||
be2a5f71 DJ |
633 | if (rs->explicit_packet_size) |
634 | return rs->explicit_packet_size; | |
635 | ||
ea9c271d | 636 | return rsa->remote_packet_size; |
d01949b6 AC |
637 | } |
638 | ||
ad10f812 | 639 | static struct packet_reg * |
ea9c271d | 640 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 641 | { |
1cf3db46 | 642 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
643 | return NULL; |
644 | else | |
ad10f812 | 645 | { |
ea9c271d | 646 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 647 | |
b323314b AC |
648 | gdb_assert (r->regnum == regnum); |
649 | return r; | |
ad10f812 | 650 | } |
ad10f812 AC |
651 | } |
652 | ||
653 | static struct packet_reg * | |
ea9c271d | 654 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 655 | { |
b323314b | 656 | int i; |
a744cf53 | 657 | |
1cf3db46 | 658 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 659 | { |
ea9c271d | 660 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 661 | |
b323314b AC |
662 | if (r->pnum == pnum) |
663 | return r; | |
ad10f812 AC |
664 | } |
665 | return NULL; | |
d01949b6 AC |
666 | } |
667 | ||
3c3bea1c GS |
668 | /* FIXME: graces/2002-08-08: These variables should eventually be |
669 | bound to an instance of the target object (as in gdbarch-tdep()), | |
670 | when such a thing exists. */ | |
671 | ||
672 | /* This is set to the data address of the access causing the target | |
673 | to stop for a watchpoint. */ | |
674 | static CORE_ADDR remote_watch_data_address; | |
675 | ||
94e08568 | 676 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
677 | static int remote_stopped_by_watchpoint_p; |
678 | ||
c906108c SS |
679 | static struct target_ops remote_ops; |
680 | ||
681 | static struct target_ops extended_remote_ops; | |
682 | ||
b84876c2 PA |
683 | static int remote_async_mask_value = 1; |
684 | ||
6426a772 JM |
685 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
686 | ``forever'' still use the normal timeout mechanism. This is | |
687 | currently used by the ASYNC code to guarentee that target reads | |
688 | during the initial connect always time-out. Once getpkt has been | |
689 | modified to return a timeout indication and, in turn | |
690 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 691 | this can go away. */ |
6426a772 JM |
692 | static int wait_forever_enabled_p = 1; |
693 | ||
9a7071a8 JB |
694 | /* Allow the user to specify what sequence to send to the remote |
695 | when he requests a program interruption: Although ^C is usually | |
696 | what remote systems expect (this is the default, here), it is | |
697 | sometimes preferable to send a break. On other systems such | |
698 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
699 | is required in order to interrupt the execution. */ | |
700 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
701 | const char interrupt_sequence_break[] = "BREAK"; | |
702 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
703 | static const char *interrupt_sequence_modes[] = | |
704 | { | |
705 | interrupt_sequence_control_c, | |
706 | interrupt_sequence_break, | |
707 | interrupt_sequence_break_g, | |
708 | NULL | |
709 | }; | |
710 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
711 | ||
712 | static void | |
713 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
714 | struct cmd_list_element *c, | |
715 | const char *value) | |
716 | { | |
717 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
718 | fprintf_filtered (file, | |
719 | _("Send the ASCII ETX character (Ctrl-c) " | |
720 | "to the remote target to interrupt the " | |
721 | "execution of the program.\n")); | |
722 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
723 | fprintf_filtered (file, | |
724 | _("send a break signal to the remote target " | |
725 | "to interrupt the execution of the program.\n")); | |
726 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
727 | fprintf_filtered (file, | |
728 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
729 | "the remote target to interrupt the execution " | |
730 | "of Linux kernel.\n")); | |
731 | else | |
732 | internal_error (__FILE__, __LINE__, | |
733 | _("Invalid value for interrupt_sequence_mode: %s."), | |
734 | interrupt_sequence_mode); | |
735 | } | |
6426a772 | 736 | |
9a7071a8 JB |
737 | /* This boolean variable specifies whether interrupt_sequence is sent |
738 | to the remote target when gdb connects to it. | |
739 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
740 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
741 | static int interrupt_on_connect = 0; | |
c906108c | 742 | |
9a7071a8 JB |
743 | /* This variable is used to implement the "set/show remotebreak" commands. |
744 | Since these commands are now deprecated in favor of "set/show remote | |
745 | interrupt-sequence", it no longer has any effect on the code. */ | |
c906108c SS |
746 | static int remote_break; |
747 | ||
9a7071a8 JB |
748 | static void |
749 | set_remotebreak (char *args, int from_tty, struct cmd_list_element *c) | |
750 | { | |
751 | if (remote_break) | |
752 | interrupt_sequence_mode = interrupt_sequence_break; | |
753 | else | |
754 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
755 | } | |
756 | ||
757 | static void | |
758 | show_remotebreak (struct ui_file *file, int from_tty, | |
759 | struct cmd_list_element *c, | |
760 | const char *value) | |
761 | { | |
762 | } | |
763 | ||
c906108c SS |
764 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
765 | remote_open knows that we don't have a file open when the program | |
766 | starts. */ | |
819cc324 | 767 | static struct serial *remote_desc = NULL; |
c906108c | 768 | |
c906108c SS |
769 | /* This variable sets the number of bits in an address that are to be |
770 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
771 | leading zeros, the entire address would be sent. This variable | |
772 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
773 | initial implementation of remote.c restricted the address sent in | |
774 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
775 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
776 | address was never sent. Since fixing this bug may cause a break in | |
777 | some remote targets this variable is principly provided to | |
23860348 | 778 | facilitate backward compatibility. */ |
c906108c SS |
779 | |
780 | static int remote_address_size; | |
781 | ||
75c99385 PA |
782 | /* Temporary to track who currently owns the terminal. See |
783 | remote_terminal_* for more details. */ | |
6426a772 JM |
784 | |
785 | static int remote_async_terminal_ours_p; | |
786 | ||
2d717e4f DJ |
787 | /* The executable file to use for "run" on the remote side. */ |
788 | ||
789 | static char *remote_exec_file = ""; | |
790 | ||
11cf8741 | 791 | \f |
11cf8741 | 792 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
793 | memory read/write packet. MIN (rsa->remote_packet_size, |
794 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 795 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
796 | (speed up transfers). The variables ``preferred_*'' (the user |
797 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 798 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
799 | |
800 | struct memory_packet_config | |
801 | { | |
802 | char *name; | |
803 | long size; | |
804 | int fixed_p; | |
805 | }; | |
806 | ||
807 | /* Compute the current size of a read/write packet. Since this makes | |
808 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
809 | ||
810 | static long | |
811 | get_memory_packet_size (struct memory_packet_config *config) | |
812 | { | |
d01949b6 | 813 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
814 | struct remote_arch_state *rsa = get_remote_arch_state (); |
815 | ||
11cf8741 JM |
816 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
817 | law?) that some hosts don't cope very well with large alloca() | |
818 | calls. Eventually the alloca() code will be replaced by calls to | |
819 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 820 | be lifted or removed. */ |
11cf8741 JM |
821 | #ifndef MAX_REMOTE_PACKET_SIZE |
822 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
823 | #endif | |
3de11b2e | 824 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 825 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 826 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
827 | #endif |
828 | long what_they_get; | |
829 | if (config->fixed_p) | |
830 | { | |
831 | if (config->size <= 0) | |
832 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
833 | else | |
834 | what_they_get = config->size; | |
835 | } | |
836 | else | |
837 | { | |
ea9c271d | 838 | what_they_get = get_remote_packet_size (); |
23860348 | 839 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
840 | if (config->size > 0 |
841 | && what_they_get > config->size) | |
842 | what_they_get = config->size; | |
be2a5f71 DJ |
843 | |
844 | /* Limit it to the size of the targets ``g'' response unless we have | |
845 | permission from the stub to use a larger packet size. */ | |
846 | if (rs->explicit_packet_size == 0 | |
847 | && rsa->actual_register_packet_size > 0 | |
848 | && what_they_get > rsa->actual_register_packet_size) | |
849 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
850 | } |
851 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
852 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
853 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
854 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
855 | |
856 | /* Make sure there is room in the global buffer for this packet | |
857 | (including its trailing NUL byte). */ | |
858 | if (rs->buf_size < what_they_get + 1) | |
859 | { | |
860 | rs->buf_size = 2 * what_they_get; | |
861 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
862 | } | |
863 | ||
11cf8741 JM |
864 | return what_they_get; |
865 | } | |
866 | ||
867 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 868 | something really big then do a sanity check. */ |
11cf8741 JM |
869 | |
870 | static void | |
871 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
872 | { | |
873 | int fixed_p = config->fixed_p; | |
874 | long size = config->size; | |
a744cf53 | 875 | |
11cf8741 | 876 | if (args == NULL) |
8a3fe4f8 | 877 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
878 | else if (strcmp (args, "hard") == 0 |
879 | || strcmp (args, "fixed") == 0) | |
880 | fixed_p = 1; | |
881 | else if (strcmp (args, "soft") == 0 | |
882 | || strcmp (args, "limit") == 0) | |
883 | fixed_p = 0; | |
884 | else | |
885 | { | |
886 | char *end; | |
a744cf53 | 887 | |
11cf8741 JM |
888 | size = strtoul (args, &end, 0); |
889 | if (args == end) | |
8a3fe4f8 | 890 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
891 | #if 0 |
892 | /* Instead of explicitly capping the size of a packet to | |
893 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
894 | instead allowed to set the size to something arbitrarily | |
23860348 | 895 | large. */ |
11cf8741 | 896 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 897 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
898 | #endif |
899 | } | |
23860348 | 900 | /* Extra checks? */ |
11cf8741 JM |
901 | if (fixed_p && !config->fixed_p) |
902 | { | |
e2e0b3e5 AC |
903 | if (! query (_("The target may not be able to correctly handle a %s\n" |
904 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 905 | config->name, size)) |
8a3fe4f8 | 906 | error (_("Packet size not changed.")); |
11cf8741 | 907 | } |
23860348 | 908 | /* Update the config. */ |
11cf8741 JM |
909 | config->fixed_p = fixed_p; |
910 | config->size = size; | |
911 | } | |
912 | ||
913 | static void | |
914 | show_memory_packet_size (struct memory_packet_config *config) | |
915 | { | |
a3f17187 | 916 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 917 | if (config->fixed_p) |
a3f17187 | 918 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
919 | get_memory_packet_size (config)); |
920 | else | |
a3f17187 | 921 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
922 | get_memory_packet_size (config)); |
923 | } | |
924 | ||
925 | static struct memory_packet_config memory_write_packet_config = | |
926 | { | |
927 | "memory-write-packet-size", | |
928 | }; | |
929 | ||
930 | static void | |
931 | set_memory_write_packet_size (char *args, int from_tty) | |
932 | { | |
933 | set_memory_packet_size (args, &memory_write_packet_config); | |
934 | } | |
935 | ||
936 | static void | |
937 | show_memory_write_packet_size (char *args, int from_tty) | |
938 | { | |
939 | show_memory_packet_size (&memory_write_packet_config); | |
940 | } | |
941 | ||
942 | static long | |
943 | get_memory_write_packet_size (void) | |
944 | { | |
945 | return get_memory_packet_size (&memory_write_packet_config); | |
946 | } | |
947 | ||
948 | static struct memory_packet_config memory_read_packet_config = | |
949 | { | |
950 | "memory-read-packet-size", | |
951 | }; | |
952 | ||
953 | static void | |
954 | set_memory_read_packet_size (char *args, int from_tty) | |
955 | { | |
956 | set_memory_packet_size (args, &memory_read_packet_config); | |
957 | } | |
958 | ||
959 | static void | |
960 | show_memory_read_packet_size (char *args, int from_tty) | |
961 | { | |
962 | show_memory_packet_size (&memory_read_packet_config); | |
963 | } | |
964 | ||
965 | static long | |
966 | get_memory_read_packet_size (void) | |
967 | { | |
968 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 969 | |
11cf8741 JM |
970 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
971 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
972 | increased beyond this. */ |
973 | if (size > get_remote_packet_size ()) | |
974 | size = get_remote_packet_size (); | |
11cf8741 JM |
975 | return size; |
976 | } | |
977 | ||
11cf8741 | 978 | \f |
5a2468f5 JM |
979 | /* Generic configuration support for packets the stub optionally |
980 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 981 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
982 | |
983 | enum packet_support | |
984 | { | |
985 | PACKET_SUPPORT_UNKNOWN = 0, | |
986 | PACKET_ENABLE, | |
987 | PACKET_DISABLE | |
988 | }; | |
989 | ||
5a2468f5 JM |
990 | struct packet_config |
991 | { | |
bb572ddd DJ |
992 | const char *name; |
993 | const char *title; | |
7f19b9a2 | 994 | enum auto_boolean detect; |
5a2468f5 JM |
995 | enum packet_support support; |
996 | }; | |
997 | ||
d471ea57 | 998 | /* Analyze a packet's return value and update the packet config |
23860348 | 999 | accordingly. */ |
d471ea57 AC |
1000 | |
1001 | enum packet_result | |
1002 | { | |
1003 | PACKET_ERROR, | |
1004 | PACKET_OK, | |
1005 | PACKET_UNKNOWN | |
1006 | }; | |
1007 | ||
5a2468f5 | 1008 | static void |
d471ea57 | 1009 | update_packet_config (struct packet_config *config) |
5a2468f5 | 1010 | { |
d471ea57 AC |
1011 | switch (config->detect) |
1012 | { | |
7f19b9a2 | 1013 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
1014 | config->support = PACKET_ENABLE; |
1015 | break; | |
7f19b9a2 | 1016 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
1017 | config->support = PACKET_DISABLE; |
1018 | break; | |
7f19b9a2 | 1019 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
1020 | config->support = PACKET_SUPPORT_UNKNOWN; |
1021 | break; | |
1022 | } | |
5a2468f5 JM |
1023 | } |
1024 | ||
1025 | static void | |
fba45db2 | 1026 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
1027 | { |
1028 | char *support = "internal-error"; | |
a744cf53 | 1029 | |
5a2468f5 JM |
1030 | switch (config->support) |
1031 | { | |
1032 | case PACKET_ENABLE: | |
1033 | support = "enabled"; | |
1034 | break; | |
1035 | case PACKET_DISABLE: | |
1036 | support = "disabled"; | |
1037 | break; | |
1038 | case PACKET_SUPPORT_UNKNOWN: | |
1039 | support = "unknown"; | |
1040 | break; | |
1041 | } | |
1042 | switch (config->detect) | |
1043 | { | |
7f19b9a2 | 1044 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1045 | printf_filtered (_("Support for the `%s' packet " |
1046 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1047 | config->name, support); |
5a2468f5 | 1048 | break; |
7f19b9a2 AC |
1049 | case AUTO_BOOLEAN_TRUE: |
1050 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1051 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1052 | config->name, support); | |
8e248173 | 1053 | break; |
5a2468f5 JM |
1054 | } |
1055 | } | |
1056 | ||
1057 | static void | |
bb572ddd DJ |
1058 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1059 | const char *title, int legacy) | |
d471ea57 | 1060 | { |
5a2468f5 JM |
1061 | char *set_doc; |
1062 | char *show_doc; | |
d471ea57 | 1063 | char *cmd_name; |
3ed07be4 | 1064 | |
5a2468f5 JM |
1065 | config->name = name; |
1066 | config->title = title; | |
7f19b9a2 | 1067 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 1068 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
1069 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
1070 | name, title); | |
3e43a32a MS |
1071 | show_doc = xstrprintf ("Show current use of remote " |
1072 | "protocol `%s' (%s) packet", | |
b435e160 | 1073 | name, title); |
d471ea57 | 1074 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1075 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1076 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1077 | &config->detect, set_doc, |
1078 | show_doc, NULL, /* help_doc */ | |
bb572ddd DJ |
1079 | set_remote_protocol_packet_cmd, |
1080 | show_remote_protocol_packet_cmd, | |
1081 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1082 | /* The command code copies the documentation strings. */ |
1083 | xfree (set_doc); | |
1084 | xfree (show_doc); | |
23860348 | 1085 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1086 | if (legacy) |
1087 | { | |
1088 | char *legacy_name; | |
a744cf53 | 1089 | |
b435e160 | 1090 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1091 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1092 | &remote_set_cmdlist); |
d471ea57 | 1093 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1094 | &remote_show_cmdlist); |
d471ea57 | 1095 | } |
5a2468f5 JM |
1096 | } |
1097 | ||
d471ea57 | 1098 | static enum packet_result |
a76d924d | 1099 | packet_check_result (const char *buf) |
5a2468f5 | 1100 | { |
d471ea57 | 1101 | if (buf[0] != '\0') |
5a2468f5 | 1102 | { |
d471ea57 | 1103 | /* The stub recognized the packet request. Check that the |
23860348 | 1104 | operation succeeded. */ |
a76d924d DJ |
1105 | if (buf[0] == 'E' |
1106 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1107 | && buf[3] == '\0') | |
1108 | /* "Enn" - definitly an error. */ | |
1109 | return PACKET_ERROR; | |
1110 | ||
1111 | /* Always treat "E." as an error. This will be used for | |
1112 | more verbose error messages, such as E.memtypes. */ | |
1113 | if (buf[0] == 'E' && buf[1] == '.') | |
1114 | return PACKET_ERROR; | |
1115 | ||
1116 | /* The packet may or may not be OK. Just assume it is. */ | |
1117 | return PACKET_OK; | |
1118 | } | |
1119 | else | |
1120 | /* The stub does not support the packet. */ | |
1121 | return PACKET_UNKNOWN; | |
1122 | } | |
1123 | ||
1124 | static enum packet_result | |
1125 | packet_ok (const char *buf, struct packet_config *config) | |
1126 | { | |
1127 | enum packet_result result; | |
1128 | ||
1129 | result = packet_check_result (buf); | |
1130 | switch (result) | |
1131 | { | |
1132 | case PACKET_OK: | |
1133 | case PACKET_ERROR: | |
1134 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
1135 | switch (config->support) |
1136 | { | |
1137 | case PACKET_SUPPORT_UNKNOWN: | |
1138 | if (remote_debug) | |
1139 | fprintf_unfiltered (gdb_stdlog, | |
1140 | "Packet %s (%s) is supported\n", | |
1141 | config->name, config->title); | |
1142 | config->support = PACKET_ENABLE; | |
1143 | break; | |
1144 | case PACKET_DISABLE: | |
8e65ff28 | 1145 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1146 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
1147 | break; |
1148 | case PACKET_ENABLE: | |
1149 | break; | |
1150 | } | |
a76d924d DJ |
1151 | break; |
1152 | case PACKET_UNKNOWN: | |
23860348 | 1153 | /* The stub does not support the packet. */ |
d471ea57 AC |
1154 | switch (config->support) |
1155 | { | |
1156 | case PACKET_ENABLE: | |
7f19b9a2 | 1157 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 1158 | /* If the stub previously indicated that the packet was |
23860348 | 1159 | supported then there is a protocol error.. */ |
8a3fe4f8 | 1160 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
1161 | config->name, config->title); |
1162 | else | |
23860348 | 1163 | /* The user set it wrong. */ |
8a3fe4f8 | 1164 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
1165 | config->name, config->title); |
1166 | break; | |
1167 | case PACKET_SUPPORT_UNKNOWN: | |
1168 | if (remote_debug) | |
1169 | fprintf_unfiltered (gdb_stdlog, | |
1170 | "Packet %s (%s) is NOT supported\n", | |
1171 | config->name, config->title); | |
1172 | config->support = PACKET_DISABLE; | |
1173 | break; | |
1174 | case PACKET_DISABLE: | |
1175 | break; | |
1176 | } | |
a76d924d | 1177 | break; |
5a2468f5 | 1178 | } |
a76d924d DJ |
1179 | |
1180 | return result; | |
5a2468f5 JM |
1181 | } |
1182 | ||
444abaca DJ |
1183 | enum { |
1184 | PACKET_vCont = 0, | |
1185 | PACKET_X, | |
1186 | PACKET_qSymbol, | |
1187 | PACKET_P, | |
1188 | PACKET_p, | |
1189 | PACKET_Z0, | |
1190 | PACKET_Z1, | |
1191 | PACKET_Z2, | |
1192 | PACKET_Z3, | |
1193 | PACKET_Z4, | |
a6b151f1 DJ |
1194 | PACKET_vFile_open, |
1195 | PACKET_vFile_pread, | |
1196 | PACKET_vFile_pwrite, | |
1197 | PACKET_vFile_close, | |
1198 | PACKET_vFile_unlink, | |
0876f84a | 1199 | PACKET_qXfer_auxv, |
23181151 | 1200 | PACKET_qXfer_features, |
cfa9d6d9 | 1201 | PACKET_qXfer_libraries, |
fd79ecee | 1202 | PACKET_qXfer_memory_map, |
0e7f50da UW |
1203 | PACKET_qXfer_spu_read, |
1204 | PACKET_qXfer_spu_write, | |
07e059b5 | 1205 | PACKET_qXfer_osdata, |
dc146f7c | 1206 | PACKET_qXfer_threads, |
0fb4aa4b | 1207 | PACKET_qXfer_statictrace_read, |
711e434b | 1208 | PACKET_qGetTIBAddr, |
444abaca | 1209 | PACKET_qGetTLSAddr, |
be2a5f71 | 1210 | PACKET_qSupported, |
89be2091 | 1211 | PACKET_QPassSignals, |
08388c79 | 1212 | PACKET_qSearch_memory, |
2d717e4f DJ |
1213 | PACKET_vAttach, |
1214 | PACKET_vRun, | |
a6f3e723 | 1215 | PACKET_QStartNoAckMode, |
82f73884 | 1216 | PACKET_vKill, |
4aa995e1 PA |
1217 | PACKET_qXfer_siginfo_read, |
1218 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1219 | PACKET_qAttached, |
782b2b07 | 1220 | PACKET_ConditionalTracepoints, |
7a697b8d | 1221 | PACKET_FastTracepoints, |
0fb4aa4b | 1222 | PACKET_StaticTracepoints, |
40ab02ce MS |
1223 | PACKET_bc, |
1224 | PACKET_bs, | |
409873ef | 1225 | PACKET_TracepointSource, |
d914c394 | 1226 | PACKET_QAllow, |
444abaca DJ |
1227 | PACKET_MAX |
1228 | }; | |
506fb367 | 1229 | |
444abaca | 1230 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1231 | |
1232 | static void | |
444abaca DJ |
1233 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1234 | struct cmd_list_element *c) | |
dc8acb97 | 1235 | { |
444abaca | 1236 | struct packet_config *packet; |
dc8acb97 | 1237 | |
444abaca DJ |
1238 | for (packet = remote_protocol_packets; |
1239 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1240 | packet++) | |
1241 | { | |
1242 | if (&packet->detect == c->var) | |
1243 | { | |
1244 | update_packet_config (packet); | |
1245 | return; | |
1246 | } | |
1247 | } | |
1248 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1249 | c->name); | |
dc8acb97 MS |
1250 | } |
1251 | ||
5a2468f5 | 1252 | static void |
444abaca DJ |
1253 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1254 | struct cmd_list_element *c, | |
1255 | const char *value) | |
5a2468f5 | 1256 | { |
444abaca | 1257 | struct packet_config *packet; |
5a2468f5 | 1258 | |
444abaca DJ |
1259 | for (packet = remote_protocol_packets; |
1260 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1261 | packet++) | |
1262 | { | |
1263 | if (&packet->detect == c->var) | |
1264 | { | |
1265 | show_packet_config_cmd (packet); | |
1266 | return; | |
1267 | } | |
1268 | } | |
1269 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1270 | c->name); | |
5a2468f5 JM |
1271 | } |
1272 | ||
d471ea57 AC |
1273 | /* Should we try one of the 'Z' requests? */ |
1274 | ||
1275 | enum Z_packet_type | |
1276 | { | |
1277 | Z_PACKET_SOFTWARE_BP, | |
1278 | Z_PACKET_HARDWARE_BP, | |
1279 | Z_PACKET_WRITE_WP, | |
1280 | Z_PACKET_READ_WP, | |
1281 | Z_PACKET_ACCESS_WP, | |
1282 | NR_Z_PACKET_TYPES | |
1283 | }; | |
96baa820 | 1284 | |
d471ea57 | 1285 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1286 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1287 | |
7f19b9a2 | 1288 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1289 | |
1290 | static void | |
fba45db2 KB |
1291 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1292 | struct cmd_list_element *c) | |
96baa820 | 1293 | { |
d471ea57 | 1294 | int i; |
a744cf53 | 1295 | |
d471ea57 AC |
1296 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1297 | { | |
444abaca DJ |
1298 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1299 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1300 | } |
96baa820 JM |
1301 | } |
1302 | ||
1303 | static void | |
08546159 AC |
1304 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1305 | struct cmd_list_element *c, | |
1306 | const char *value) | |
96baa820 | 1307 | { |
d471ea57 | 1308 | int i; |
a744cf53 | 1309 | |
d471ea57 AC |
1310 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
1311 | { | |
444abaca | 1312 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1313 | } |
96baa820 JM |
1314 | } |
1315 | ||
9d1f7ab2 MS |
1316 | /* Should we try the 'ThreadInfo' query packet? |
1317 | ||
1318 | This variable (NOT available to the user: auto-detect only!) | |
1319 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1320 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1321 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1322 | and set to false when the target fails to recognize it). */ |
1323 | ||
1324 | static int use_threadinfo_query; | |
1325 | static int use_threadextra_query; | |
1326 | ||
23860348 | 1327 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1328 | static struct async_signal_handler *sigint_remote_twice_token; |
1329 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1330 | |
74531fed PA |
1331 | \f |
1332 | /* Asynchronous signal handle registered as event loop source for | |
1333 | when we have pending events ready to be passed to the core. */ | |
1334 | ||
1335 | static struct async_event_handler *remote_async_inferior_event_token; | |
1336 | ||
1337 | /* Asynchronous signal handle registered as event loop source for when | |
1338 | the remote sent us a %Stop notification. The registered callback | |
1339 | will do a vStopped sequence to pull the rest of the events out of | |
1340 | the remote side into our event queue. */ | |
1341 | ||
1342 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1343 | \f |
1344 | ||
79d7f229 PA |
1345 | static ptid_t magic_null_ptid; |
1346 | static ptid_t not_sent_ptid; | |
1347 | static ptid_t any_thread_ptid; | |
1348 | ||
1349 | /* These are the threads which we last sent to the remote system. The | |
1350 | TID member will be -1 for all or -2 for not sent yet. */ | |
1351 | ||
1352 | static ptid_t general_thread; | |
1353 | static ptid_t continue_thread; | |
c5aa993b | 1354 | |
0b16c5cf PA |
1355 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1356 | detach instead of killing it when bailing out). */ | |
1357 | ||
1358 | static int | |
1359 | remote_query_attached (int pid) | |
1360 | { | |
1361 | struct remote_state *rs = get_remote_state (); | |
1362 | ||
1363 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1364 | return 0; | |
1365 | ||
1366 | if (remote_multi_process_p (rs)) | |
1367 | sprintf (rs->buf, "qAttached:%x", pid); | |
1368 | else | |
1369 | sprintf (rs->buf, "qAttached"); | |
1370 | ||
1371 | putpkt (rs->buf); | |
1372 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1373 | ||
1374 | switch (packet_ok (rs->buf, | |
1554e9be | 1375 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1376 | { |
1377 | case PACKET_OK: | |
1378 | if (strcmp (rs->buf, "1") == 0) | |
1379 | return 1; | |
1380 | break; | |
1381 | case PACKET_ERROR: | |
1382 | warning (_("Remote failure reply: %s"), rs->buf); | |
1383 | break; | |
1384 | case PACKET_UNKNOWN: | |
1385 | break; | |
1386 | } | |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1941c569 PA |
1391 | /* Add PID to GDB's inferior table. Since we can be connected to a |
1392 | remote system before before knowing about any inferior, mark the | |
0b16c5cf PA |
1393 | target with execution when we find the first inferior. If ATTACHED |
1394 | is 1, then we had just attached to this inferior. If it is 0, then | |
1395 | we just created this inferior. If it is -1, then try querying the | |
1396 | remote stub to find out if it had attached to the inferior or | |
1397 | not. */ | |
1941c569 PA |
1398 | |
1399 | static struct inferior * | |
0b16c5cf | 1400 | remote_add_inferior (int pid, int attached) |
1941c569 | 1401 | { |
1941c569 PA |
1402 | struct inferior *inf; |
1403 | ||
0b16c5cf PA |
1404 | /* Check whether this process we're learning about is to be |
1405 | considered attached, or if is to be considered to have been | |
1406 | spawned by the stub. */ | |
1407 | if (attached == -1) | |
1408 | attached = remote_query_attached (pid); | |
1409 | ||
6c95b8df PA |
1410 | if (gdbarch_has_global_solist (target_gdbarch)) |
1411 | { | |
1412 | /* If the target shares code across all inferiors, then every | |
1413 | attach adds a new inferior. */ | |
1414 | inf = add_inferior (pid); | |
1415 | ||
1416 | /* ... and every inferior is bound to the same program space. | |
1417 | However, each inferior may still have its own address | |
1418 | space. */ | |
1419 | inf->aspace = maybe_new_address_space (); | |
1420 | inf->pspace = current_program_space; | |
1421 | } | |
1422 | else | |
1423 | { | |
1424 | /* In the traditional debugging scenario, there's a 1-1 match | |
1425 | between program/address spaces. We simply bind the inferior | |
1426 | to the program space's address space. */ | |
1427 | inf = current_inferior (); | |
1428 | inferior_appeared (inf, pid); | |
1429 | } | |
1941c569 | 1430 | |
0b16c5cf PA |
1431 | inf->attach_flag = attached; |
1432 | ||
1941c569 PA |
1433 | return inf; |
1434 | } | |
1435 | ||
1436 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1437 | according to RUNNING. */ | |
1438 | ||
c906108c | 1439 | static void |
1941c569 | 1440 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1441 | { |
1941c569 PA |
1442 | add_thread (ptid); |
1443 | ||
1444 | set_executing (ptid, running); | |
1445 | set_running (ptid, running); | |
1446 | } | |
1447 | ||
1448 | /* Come here when we learn about a thread id from the remote target. | |
1449 | It may be the first time we hear about such thread, so take the | |
1450 | opportunity to add it to GDB's thread list. In case this is the | |
1451 | first time we're noticing its corresponding inferior, add it to | |
1452 | GDB's inferior list as well. */ | |
1453 | ||
1454 | static void | |
1455 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1456 | { | |
c906108c SS |
1457 | /* If this is a new thread, add it to GDB's thread list. |
1458 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1459 | |
1460 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1461 | { | |
1462 | /* We're seeing an event on a thread id we knew had exited. | |
1463 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1464 | remote_add_thread (currthread, running); |
82f73884 PA |
1465 | return; |
1466 | } | |
1467 | ||
79d7f229 | 1468 | if (!in_thread_list (currthread)) |
c0a2216e | 1469 | { |
1941c569 | 1470 | struct inferior *inf = NULL; |
bad34192 | 1471 | int pid = ptid_get_pid (currthread); |
1941c569 | 1472 | |
bad34192 PA |
1473 | if (ptid_is_pid (inferior_ptid) |
1474 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1475 | { |
1476 | /* inferior_ptid has no thread member yet. This can happen | |
1477 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1478 | stub doesn't support qC. This is the first stop reported | |
1479 | after an attach, so this is the main thread. Update the | |
1480 | ptid in the thread list. */ | |
bad34192 PA |
1481 | if (in_thread_list (pid_to_ptid (pid))) |
1482 | thread_change_ptid (inferior_ptid, currthread); | |
1483 | else | |
1484 | { | |
1485 | remote_add_thread (currthread, running); | |
1486 | inferior_ptid = currthread; | |
1487 | } | |
dc146f7c | 1488 | return; |
c0a2216e | 1489 | } |
82f73884 PA |
1490 | |
1491 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1492 | { |
1493 | /* inferior_ptid is not set yet. This can happen with the | |
1494 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1495 | doesn't support qC. This is the first stop reported | |
1496 | after an attach, so this is the main thread. Update the | |
1497 | ptid in the thread list. */ | |
dc146f7c | 1498 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 1499 | return; |
c0a2216e | 1500 | } |
82f73884 | 1501 | |
29c87f7f PA |
1502 | /* When connecting to a target remote, or to a target |
1503 | extended-remote which already was debugging an inferior, we | |
1504 | may not know about it yet. Add it before adding its child | |
1505 | thread, so notifications are emitted in a sensible order. */ | |
1506 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
0b16c5cf | 1507 | inf = remote_add_inferior (ptid_get_pid (currthread), -1); |
29c87f7f | 1508 | |
82f73884 | 1509 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1510 | remote_add_thread (currthread, running); |
1511 | ||
1512 | /* If we found a new inferior, let the common code do whatever | |
1513 | it needs to with it (e.g., read shared libraries, insert | |
1514 | breakpoints). */ | |
1515 | if (inf != NULL) | |
1516 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1517 | } |
c906108c SS |
1518 | } |
1519 | ||
dc146f7c VP |
1520 | /* Return the private thread data, creating it if necessary. */ |
1521 | ||
1522 | struct private_thread_info * | |
1523 | demand_private_info (ptid_t ptid) | |
1524 | { | |
1525 | struct thread_info *info = find_thread_ptid (ptid); | |
1526 | ||
1527 | gdb_assert (info); | |
1528 | ||
1529 | if (!info->private) | |
1530 | { | |
1531 | info->private = xmalloc (sizeof (*(info->private))); | |
1532 | info->private_dtor = free_private_thread_info; | |
1533 | info->private->core = -1; | |
1534 | info->private->extra = 0; | |
1535 | } | |
1536 | ||
1537 | return info->private; | |
1538 | } | |
1539 | ||
74531fed PA |
1540 | /* Call this function as a result of |
1541 | 1) A halt indication (T packet) containing a thread id | |
1542 | 2) A direct query of currthread | |
1543 | 3) Successful execution of set thread | |
1544 | */ | |
1545 | ||
1546 | static void | |
1547 | record_currthread (ptid_t currthread) | |
1548 | { | |
1549 | general_thread = currthread; | |
74531fed PA |
1550 | } |
1551 | ||
89be2091 DJ |
1552 | static char *last_pass_packet; |
1553 | ||
1554 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1555 | it can simply pass through to the inferior without reporting. */ | |
1556 | ||
1557 | static void | |
1558 | remote_pass_signals (void) | |
1559 | { | |
1560 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1561 | { | |
1562 | char *pass_packet, *p; | |
1563 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1564 | int count = 0, i; | |
1565 | ||
1566 | gdb_assert (numsigs < 256); | |
1567 | for (i = 0; i < numsigs; i++) | |
1568 | { | |
1569 | if (signal_stop_state (i) == 0 | |
1570 | && signal_print_state (i) == 0 | |
1571 | && signal_pass_state (i) == 1) | |
1572 | count++; | |
1573 | } | |
1574 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1575 | strcpy (pass_packet, "QPassSignals:"); | |
1576 | p = pass_packet + strlen (pass_packet); | |
1577 | for (i = 0; i < numsigs; i++) | |
1578 | { | |
1579 | if (signal_stop_state (i) == 0 | |
1580 | && signal_print_state (i) == 0 | |
1581 | && signal_pass_state (i) == 1) | |
1582 | { | |
1583 | if (i >= 16) | |
1584 | *p++ = tohex (i >> 4); | |
1585 | *p++ = tohex (i & 15); | |
1586 | if (count) | |
1587 | *p++ = ';'; | |
1588 | else | |
1589 | break; | |
1590 | count--; | |
1591 | } | |
1592 | } | |
1593 | *p = 0; | |
1594 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1595 | { | |
1596 | struct remote_state *rs = get_remote_state (); | |
1597 | char *buf = rs->buf; | |
1598 | ||
1599 | putpkt (pass_packet); | |
1600 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1601 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1602 | if (last_pass_packet) | |
1603 | xfree (last_pass_packet); | |
1604 | last_pass_packet = pass_packet; | |
1605 | } | |
1606 | else | |
1607 | xfree (pass_packet); | |
1608 | } | |
1609 | } | |
1610 | ||
f0223081 PA |
1611 | static void |
1612 | remote_notice_signals (ptid_t ptid) | |
1613 | { | |
1614 | /* Update the remote on signals to silently pass, if they've | |
1615 | changed. */ | |
1616 | remote_pass_signals (); | |
1617 | } | |
1618 | ||
79d7f229 PA |
1619 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1620 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1621 | thread. If GEN is set, set the general thread, if not, then set | |
1622 | the step/continue thread. */ | |
c906108c | 1623 | static void |
79d7f229 | 1624 | set_thread (struct ptid ptid, int gen) |
c906108c | 1625 | { |
d01949b6 | 1626 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1627 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1628 | char *buf = rs->buf; |
79d7f229 | 1629 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1630 | |
79d7f229 | 1631 | if (ptid_equal (state, ptid)) |
c906108c SS |
1632 | return; |
1633 | ||
79d7f229 PA |
1634 | *buf++ = 'H'; |
1635 | *buf++ = gen ? 'g' : 'c'; | |
1636 | if (ptid_equal (ptid, magic_null_ptid)) | |
1637 | xsnprintf (buf, endbuf - buf, "0"); | |
1638 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1639 | xsnprintf (buf, endbuf - buf, "0"); | |
1640 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1641 | xsnprintf (buf, endbuf - buf, "-1"); | |
1642 | else | |
82f73884 | 1643 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1644 | putpkt (rs->buf); |
6d820c5c | 1645 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1646 | if (gen) |
79d7f229 | 1647 | general_thread = ptid; |
c906108c | 1648 | else |
79d7f229 | 1649 | continue_thread = ptid; |
c906108c | 1650 | } |
79d7f229 PA |
1651 | |
1652 | static void | |
1653 | set_general_thread (struct ptid ptid) | |
1654 | { | |
1655 | set_thread (ptid, 1); | |
1656 | } | |
1657 | ||
1658 | static void | |
1659 | set_continue_thread (struct ptid ptid) | |
1660 | { | |
1661 | set_thread (ptid, 0); | |
1662 | } | |
1663 | ||
3c9c4b83 PA |
1664 | /* Change the remote current process. Which thread within the process |
1665 | ends up selected isn't important, as long as it is the same process | |
1666 | as what INFERIOR_PTID points to. | |
1667 | ||
1668 | This comes from that fact that there is no explicit notion of | |
1669 | "selected process" in the protocol. The selected process for | |
1670 | general operations is the process the selected general thread | |
1671 | belongs to. */ | |
1672 | ||
1673 | static void | |
1674 | set_general_process (void) | |
1675 | { | |
1676 | struct remote_state *rs = get_remote_state (); | |
1677 | ||
1678 | /* If the remote can't handle multiple processes, don't bother. */ | |
1679 | if (!remote_multi_process_p (rs)) | |
1680 | return; | |
1681 | ||
1682 | /* We only need to change the remote current thread if it's pointing | |
1683 | at some other process. */ | |
1684 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1685 | set_general_thread (inferior_ptid); | |
1686 | } | |
1687 | ||
c906108c | 1688 | \f |
79d7f229 PA |
1689 | /* Return nonzero if the thread PTID is still alive on the remote |
1690 | system. */ | |
c906108c SS |
1691 | |
1692 | static int | |
28439f5e | 1693 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1694 | { |
6d820c5c | 1695 | struct remote_state *rs = get_remote_state (); |
82f73884 | 1696 | char *p, *endp; |
c906108c | 1697 | |
c0a2216e PA |
1698 | if (ptid_equal (ptid, magic_null_ptid)) |
1699 | /* The main thread is always alive. */ | |
1700 | return 1; | |
1701 | ||
1702 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1703 | /* The main thread is always alive. This can happen after a | |
1704 | vAttach, if the remote side doesn't support | |
1705 | multi-threading. */ | |
1706 | return 1; | |
1707 | ||
82f73884 PA |
1708 | p = rs->buf; |
1709 | endp = rs->buf + get_remote_packet_size (); | |
1710 | ||
1711 | *p++ = 'T'; | |
1712 | write_ptid (p, endp, ptid); | |
1713 | ||
2e9f7625 | 1714 | putpkt (rs->buf); |
6d820c5c | 1715 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1716 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1717 | } |
1718 | ||
1719 | /* About these extended threadlist and threadinfo packets. They are | |
1720 | variable length packets but, the fields within them are often fixed | |
1721 | length. They are redundent enough to send over UDP as is the | |
1722 | remote protocol in general. There is a matching unit test module | |
1723 | in libstub. */ | |
1724 | ||
cce74817 JM |
1725 | #define OPAQUETHREADBYTES 8 |
1726 | ||
1727 | /* a 64 bit opaque identifier */ | |
1728 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1729 | ||
23860348 MS |
1730 | /* WARNING: This threadref data structure comes from the remote O.S., |
1731 | libstub protocol encoding, and remote.c. it is not particularly | |
1732 | changable. */ | |
cce74817 JM |
1733 | |
1734 | /* Right now, the internal structure is int. We want it to be bigger. | |
1735 | Plan to fix this. | |
c5aa993b | 1736 | */ |
cce74817 | 1737 | |
23860348 | 1738 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1739 | |
9d1f7ab2 | 1740 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1741 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1742 | |
1743 | struct gdb_ext_thread_info | |
c5aa993b | 1744 | { |
23860348 | 1745 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1746 | int active; /* Has state interesting to GDB? |
23860348 | 1747 | regs, stack. */ |
2bc416ba | 1748 | char display[256]; /* Brief state display, name, |
cedea757 | 1749 | blocked/suspended. */ |
23860348 | 1750 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1751 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1752 | whatever. */ |
c5aa993b | 1753 | }; |
cce74817 JM |
1754 | |
1755 | /* The volume of remote transfers can be limited by submitting | |
1756 | a mask containing bits specifying the desired information. | |
1757 | Use a union of these values as the 'selection' parameter to | |
1758 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1759 | */ |
cce74817 JM |
1760 | |
1761 | #define TAG_THREADID 1 | |
1762 | #define TAG_EXISTS 2 | |
1763 | #define TAG_DISPLAY 4 | |
1764 | #define TAG_THREADNAME 8 | |
c5aa993b | 1765 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1766 | |
23860348 | 1767 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1768 | |
b2dd6311 | 1769 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1770 | |
a14ed312 | 1771 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1772 | |
a14ed312 | 1773 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1774 | |
23860348 | 1775 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1776 | |
a14ed312 | 1777 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1778 | |
a14ed312 | 1779 | static char *pack_int (char *buf, int value); |
cce74817 | 1780 | |
a14ed312 | 1781 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1782 | |
a14ed312 | 1783 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1784 | |
23860348 | 1785 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1786 | |
23860348 | 1787 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1788 | |
23860348 | 1789 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1790 | |
23860348 | 1791 | static int threadref_to_int (threadref *ref); |
cce74817 | 1792 | |
23860348 | 1793 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1794 | |
23860348 | 1795 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1796 | |
2bc416ba | 1797 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1798 | threadref *id); |
cce74817 | 1799 | |
a14ed312 | 1800 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1801 | threadref *expectedref, |
a14ed312 KB |
1802 | struct gdb_ext_thread_info |
1803 | *info); | |
cce74817 JM |
1804 | |
1805 | ||
2bc416ba | 1806 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1807 | int fieldset, /*TAG mask */ |
a14ed312 | 1808 | struct gdb_ext_thread_info *info); |
cce74817 | 1809 | |
a14ed312 KB |
1810 | static char *pack_threadlist_request (char *pkt, int startflag, |
1811 | int threadcount, | |
23860348 | 1812 | threadref *nextthread); |
cce74817 | 1813 | |
a14ed312 KB |
1814 | static int parse_threadlist_response (char *pkt, |
1815 | int result_limit, | |
23860348 | 1816 | threadref *original_echo, |
2bc416ba | 1817 | threadref *resultlist, |
23860348 | 1818 | int *doneflag); |
cce74817 | 1819 | |
a14ed312 | 1820 | static int remote_get_threadlist (int startflag, |
23860348 | 1821 | threadref *nextthread, |
a14ed312 KB |
1822 | int result_limit, |
1823 | int *done, | |
2bc416ba | 1824 | int *result_count, |
23860348 | 1825 | threadref *threadlist); |
cce74817 | 1826 | |
23860348 | 1827 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1828 | |
a14ed312 KB |
1829 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1830 | void *context, int looplimit); | |
cce74817 | 1831 | |
23860348 | 1832 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1833 | |
82f73884 PA |
1834 | |
1835 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1836 | buffer we're allowed to write to. Returns | |
1837 | BUF+CHARACTERS_WRITTEN. */ | |
1838 | ||
1839 | static char * | |
1840 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1841 | { | |
1842 | int pid, tid; | |
1843 | struct remote_state *rs = get_remote_state (); | |
1844 | ||
1845 | if (remote_multi_process_p (rs)) | |
1846 | { | |
1847 | pid = ptid_get_pid (ptid); | |
1848 | if (pid < 0) | |
1849 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1850 | else | |
1851 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1852 | } | |
1853 | tid = ptid_get_tid (ptid); | |
1854 | if (tid < 0) | |
1855 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1856 | else | |
1857 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1858 | ||
1859 | return buf; | |
1860 | } | |
1861 | ||
1862 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1863 | passed the last parsed char. Returns null_ptid on error. */ | |
1864 | ||
1865 | static ptid_t | |
1866 | read_ptid (char *buf, char **obuf) | |
1867 | { | |
1868 | char *p = buf; | |
1869 | char *pp; | |
1870 | ULONGEST pid = 0, tid = 0; | |
82f73884 PA |
1871 | |
1872 | if (*p == 'p') | |
1873 | { | |
1874 | /* Multi-process ptid. */ | |
1875 | pp = unpack_varlen_hex (p + 1, &pid); | |
1876 | if (*pp != '.') | |
1877 | error (_("invalid remote ptid: %s\n"), p); | |
1878 | ||
1879 | p = pp; | |
1880 | pp = unpack_varlen_hex (p + 1, &tid); | |
1881 | if (obuf) | |
1882 | *obuf = pp; | |
1883 | return ptid_build (pid, 0, tid); | |
1884 | } | |
1885 | ||
1886 | /* No multi-process. Just a tid. */ | |
1887 | pp = unpack_varlen_hex (p, &tid); | |
1888 | ||
1889 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1890 | what's in inferior_ptid, unless it's null at this point. If so, |
1891 | then since there's no way to know the pid of the reported | |
1892 | threads, use the magic number. */ | |
1893 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1894 | pid = ptid_get_pid (magic_null_ptid); | |
1895 | else | |
1896 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1897 | |
1898 | if (obuf) | |
1899 | *obuf = pp; | |
1900 | return ptid_build (pid, 0, tid); | |
1901 | } | |
1902 | ||
23860348 | 1903 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1904 | |
1905 | static const char hexchars[] = "0123456789abcdef"; | |
1906 | ||
1907 | static int | |
fba45db2 | 1908 | ishex (int ch, int *val) |
c906108c SS |
1909 | { |
1910 | if ((ch >= 'a') && (ch <= 'f')) | |
1911 | { | |
1912 | *val = ch - 'a' + 10; | |
1913 | return 1; | |
1914 | } | |
1915 | if ((ch >= 'A') && (ch <= 'F')) | |
1916 | { | |
1917 | *val = ch - 'A' + 10; | |
1918 | return 1; | |
1919 | } | |
1920 | if ((ch >= '0') && (ch <= '9')) | |
1921 | { | |
1922 | *val = ch - '0'; | |
1923 | return 1; | |
1924 | } | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | static int | |
fba45db2 | 1929 | stubhex (int ch) |
c906108c SS |
1930 | { |
1931 | if (ch >= 'a' && ch <= 'f') | |
1932 | return ch - 'a' + 10; | |
1933 | if (ch >= '0' && ch <= '9') | |
1934 | return ch - '0'; | |
1935 | if (ch >= 'A' && ch <= 'F') | |
1936 | return ch - 'A' + 10; | |
1937 | return -1; | |
1938 | } | |
1939 | ||
1940 | static int | |
fba45db2 | 1941 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1942 | { |
1943 | int nibble; | |
1944 | int retval = 0; | |
1945 | ||
1946 | while (fieldlength) | |
1947 | { | |
1948 | nibble = stubhex (*buff++); | |
1949 | retval |= nibble; | |
1950 | fieldlength--; | |
1951 | if (fieldlength) | |
1952 | retval = retval << 4; | |
1953 | } | |
1954 | return retval; | |
1955 | } | |
1956 | ||
1957 | char * | |
fba45db2 | 1958 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1959 | ULONGEST *result) |
c906108c SS |
1960 | { |
1961 | int nibble; | |
d49c44d5 | 1962 | ULONGEST retval = 0; |
c906108c SS |
1963 | |
1964 | while (ishex (*buff, &nibble)) | |
1965 | { | |
1966 | buff++; | |
1967 | retval = retval << 4; | |
1968 | retval |= nibble & 0x0f; | |
1969 | } | |
1970 | *result = retval; | |
1971 | return buff; | |
1972 | } | |
1973 | ||
1974 | static char * | |
fba45db2 | 1975 | unpack_nibble (char *buf, int *val) |
c906108c | 1976 | { |
b7589f7d | 1977 | *val = fromhex (*buf++); |
c906108c SS |
1978 | return buf; |
1979 | } | |
1980 | ||
1981 | static char * | |
fba45db2 | 1982 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1983 | { |
1984 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1985 | return buf; | |
1986 | } | |
1987 | ||
1988 | static char * | |
fba45db2 | 1989 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1990 | { |
1991 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1992 | *pkt++ = hexchars[(byte & 0xf)]; | |
1993 | return pkt; | |
1994 | } | |
1995 | ||
1996 | static char * | |
fba45db2 | 1997 | unpack_byte (char *buf, int *value) |
c906108c SS |
1998 | { |
1999 | *value = stub_unpack_int (buf, 2); | |
2000 | return buf + 2; | |
2001 | } | |
2002 | ||
2003 | static char * | |
fba45db2 | 2004 | pack_int (char *buf, int value) |
c906108c SS |
2005 | { |
2006 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
2007 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
2008 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
2009 | buf = pack_hex_byte (buf, (value & 0xff)); | |
2010 | return buf; | |
2011 | } | |
2012 | ||
2013 | static char * | |
fba45db2 | 2014 | unpack_int (char *buf, int *value) |
c906108c SS |
2015 | { |
2016 | *value = stub_unpack_int (buf, 8); | |
2017 | return buf + 8; | |
2018 | } | |
2019 | ||
23860348 | 2020 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 2021 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
2022 | |
2023 | static char * | |
fba45db2 | 2024 | pack_string (char *pkt, char *string) |
c906108c SS |
2025 | { |
2026 | char ch; | |
2027 | int len; | |
2028 | ||
2029 | len = strlen (string); | |
2030 | if (len > 200) | |
23860348 | 2031 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
2032 | pkt = pack_hex_byte (pkt, len); |
2033 | while (len-- > 0) | |
2034 | { | |
2035 | ch = *string++; | |
2036 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 2037 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
2038 | *pkt++ = ch; |
2039 | } | |
2040 | return pkt; | |
2041 | } | |
2042 | #endif /* 0 (unused) */ | |
2043 | ||
2044 | static char * | |
fba45db2 | 2045 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
2046 | { |
2047 | while (length--) | |
2048 | *dest++ = *src++; | |
2049 | *dest = '\0'; | |
2050 | return src; | |
2051 | } | |
2052 | ||
2053 | static char * | |
fba45db2 | 2054 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
2055 | { |
2056 | char *limit; | |
2057 | unsigned char *altid; | |
2058 | ||
2059 | altid = (unsigned char *) id; | |
2060 | limit = pkt + BUF_THREAD_ID_SIZE; | |
2061 | while (pkt < limit) | |
2062 | pkt = pack_hex_byte (pkt, *altid++); | |
2063 | return pkt; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | static char * | |
fba45db2 | 2068 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
2069 | { |
2070 | char *altref; | |
2071 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
2072 | int x, y; | |
2073 | ||
2074 | altref = (char *) id; | |
2075 | ||
2076 | while (inbuf < limit) | |
2077 | { | |
2078 | x = stubhex (*inbuf++); | |
2079 | y = stubhex (*inbuf++); | |
2080 | *altref++ = (x << 4) | y; | |
2081 | } | |
2082 | return inbuf; | |
2083 | } | |
2084 | ||
2085 | /* Externally, threadrefs are 64 bits but internally, they are still | |
2086 | ints. This is due to a mismatch of specifications. We would like | |
2087 | to use 64bit thread references internally. This is an adapter | |
2088 | function. */ | |
2089 | ||
2090 | void | |
fba45db2 | 2091 | int_to_threadref (threadref *id, int value) |
c906108c SS |
2092 | { |
2093 | unsigned char *scan; | |
2094 | ||
2095 | scan = (unsigned char *) id; | |
2096 | { | |
2097 | int i = 4; | |
2098 | while (i--) | |
2099 | *scan++ = 0; | |
2100 | } | |
2101 | *scan++ = (value >> 24) & 0xff; | |
2102 | *scan++ = (value >> 16) & 0xff; | |
2103 | *scan++ = (value >> 8) & 0xff; | |
2104 | *scan++ = (value & 0xff); | |
2105 | } | |
2106 | ||
2107 | static int | |
fba45db2 | 2108 | threadref_to_int (threadref *ref) |
c906108c SS |
2109 | { |
2110 | int i, value = 0; | |
2111 | unsigned char *scan; | |
2112 | ||
cfd77fa1 | 2113 | scan = *ref; |
c906108c SS |
2114 | scan += 4; |
2115 | i = 4; | |
2116 | while (i-- > 0) | |
2117 | value = (value << 8) | ((*scan++) & 0xff); | |
2118 | return value; | |
2119 | } | |
2120 | ||
2121 | static void | |
fba45db2 | 2122 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
2123 | { |
2124 | int i; | |
2125 | unsigned char *csrc, *cdest; | |
2126 | ||
2127 | csrc = (unsigned char *) src; | |
2128 | cdest = (unsigned char *) dest; | |
2129 | i = 8; | |
2130 | while (i--) | |
2131 | *cdest++ = *csrc++; | |
2132 | } | |
2133 | ||
2134 | static int | |
fba45db2 | 2135 | threadmatch (threadref *dest, threadref *src) |
c906108c | 2136 | { |
23860348 | 2137 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
2138 | #if 0 |
2139 | unsigned char *srcp, *destp; | |
2140 | int i, result; | |
2141 | srcp = (char *) src; | |
2142 | destp = (char *) dest; | |
2143 | ||
2144 | result = 1; | |
2145 | while (i-- > 0) | |
2146 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
2147 | return result; | |
2148 | #endif | |
2149 | return 1; | |
2150 | } | |
2151 | ||
2152 | /* | |
c5aa993b JM |
2153 | threadid:1, # always request threadid |
2154 | context_exists:2, | |
2155 | display:4, | |
2156 | unique_name:8, | |
2157 | more_display:16 | |
2158 | */ | |
c906108c SS |
2159 | |
2160 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
2161 | ||
2162 | static char * | |
fba45db2 | 2163 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 2164 | { |
23860348 MS |
2165 | *pkt++ = 'q'; /* Info Query */ |
2166 | *pkt++ = 'P'; /* process or thread info */ | |
2167 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 2168 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 2169 | *pkt = '\0'; /* terminate */ |
c906108c SS |
2170 | return pkt; |
2171 | } | |
2172 | ||
23860348 | 2173 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 2174 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 2175 | add more fields as time goes by. */ |
c906108c | 2176 | |
23860348 | 2177 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 2178 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 2179 | fetch registers and its stack? */ |
c5aa993b | 2180 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 2181 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 2182 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 2183 | the process. */ |
c906108c SS |
2184 | |
2185 | static int | |
fba45db2 KB |
2186 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
2187 | struct gdb_ext_thread_info *info) | |
c906108c | 2188 | { |
d01949b6 | 2189 | struct remote_state *rs = get_remote_state (); |
c906108c | 2190 | int mask, length; |
cfd77fa1 | 2191 | int tag; |
c906108c | 2192 | threadref ref; |
6d820c5c | 2193 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
2194 | int retval = 1; |
2195 | ||
23860348 | 2196 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
2197 | info->active = 0; |
2198 | info->display[0] = '\0'; | |
2199 | info->shortname[0] = '\0'; | |
2200 | info->more_display[0] = '\0'; | |
2201 | ||
23860348 MS |
2202 | /* Assume the characters indicating the packet type have been |
2203 | stripped. */ | |
c906108c SS |
2204 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
2205 | pkt = unpack_threadid (pkt, &ref); | |
2206 | ||
2207 | if (mask == 0) | |
8a3fe4f8 | 2208 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 2209 | if (!threadmatch (&ref, expectedref)) |
23860348 | 2210 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 2211 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
2212 | return 0; |
2213 | } | |
2214 | copy_threadref (&info->threadid, &ref); | |
2215 | ||
23860348 | 2216 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 2217 | |
23860348 MS |
2218 | /* Packets are terminated with nulls. */ |
2219 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
2220 | { |
2221 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
2222 | pkt = unpack_byte (pkt, &length); /* length */ |
2223 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 2224 | { |
8a3fe4f8 | 2225 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
2226 | retval = 0; |
2227 | break; | |
2228 | } | |
2229 | if (tag == TAG_THREADID) | |
2230 | { | |
2231 | if (length != 16) | |
2232 | { | |
8a3fe4f8 | 2233 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
2234 | retval = 0; |
2235 | break; | |
2236 | } | |
2237 | pkt = unpack_threadid (pkt, &ref); | |
2238 | mask = mask & ~TAG_THREADID; | |
2239 | continue; | |
2240 | } | |
2241 | if (tag == TAG_EXISTS) | |
2242 | { | |
2243 | info->active = stub_unpack_int (pkt, length); | |
2244 | pkt += length; | |
2245 | mask = mask & ~(TAG_EXISTS); | |
2246 | if (length > 8) | |
2247 | { | |
8a3fe4f8 | 2248 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
2249 | retval = 0; |
2250 | break; | |
2251 | } | |
2252 | continue; | |
2253 | } | |
2254 | if (tag == TAG_THREADNAME) | |
2255 | { | |
2256 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
2257 | mask = mask & ~TAG_THREADNAME; | |
2258 | continue; | |
2259 | } | |
2260 | if (tag == TAG_DISPLAY) | |
2261 | { | |
2262 | pkt = unpack_string (pkt, &info->display[0], length); | |
2263 | mask = mask & ~TAG_DISPLAY; | |
2264 | continue; | |
2265 | } | |
2266 | if (tag == TAG_MOREDISPLAY) | |
2267 | { | |
2268 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2269 | mask = mask & ~TAG_MOREDISPLAY; | |
2270 | continue; | |
2271 | } | |
8a3fe4f8 | 2272 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2273 | break; /* Not a tag we know about. */ |
c906108c SS |
2274 | } |
2275 | return retval; | |
2276 | } | |
2277 | ||
2278 | static int | |
fba45db2 KB |
2279 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2280 | struct gdb_ext_thread_info *info) | |
c906108c | 2281 | { |
d01949b6 | 2282 | struct remote_state *rs = get_remote_state (); |
c906108c | 2283 | int result; |
c906108c | 2284 | |
2e9f7625 DJ |
2285 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2286 | putpkt (rs->buf); | |
6d820c5c | 2287 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2288 | |
2289 | if (rs->buf[0] == '\0') | |
2290 | return 0; | |
2291 | ||
2e9f7625 | 2292 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2293 | threadid, info); |
c906108c SS |
2294 | return result; |
2295 | } | |
2296 | ||
c906108c SS |
2297 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2298 | ||
2299 | static char * | |
fba45db2 KB |
2300 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2301 | threadref *nextthread) | |
c906108c SS |
2302 | { |
2303 | *pkt++ = 'q'; /* info query packet */ | |
2304 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2305 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2306 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2307 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2308 | *pkt = '\0'; | |
2309 | return pkt; | |
2310 | } | |
2311 | ||
2312 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2313 | ||
2314 | static int | |
fba45db2 KB |
2315 | parse_threadlist_response (char *pkt, int result_limit, |
2316 | threadref *original_echo, threadref *resultlist, | |
2317 | int *doneflag) | |
c906108c | 2318 | { |
d01949b6 | 2319 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2320 | char *limit; |
2321 | int count, resultcount, done; | |
2322 | ||
2323 | resultcount = 0; | |
2324 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2325 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2326 | /* done parse past here */ |
c906108c SS |
2327 | pkt = unpack_byte (pkt, &count); /* count field */ |
2328 | pkt = unpack_nibble (pkt, &done); | |
2329 | /* The first threadid is the argument threadid. */ | |
2330 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2331 | while ((count-- > 0) && (pkt < limit)) | |
2332 | { | |
2333 | pkt = unpack_threadid (pkt, resultlist++); | |
2334 | if (resultcount++ >= result_limit) | |
2335 | break; | |
2336 | } | |
2337 | if (doneflag) | |
2338 | *doneflag = done; | |
2339 | return resultcount; | |
2340 | } | |
2341 | ||
2342 | static int | |
fba45db2 KB |
2343 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2344 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2345 | { |
d01949b6 | 2346 | struct remote_state *rs = get_remote_state (); |
c906108c | 2347 | static threadref echo_nextthread; |
c906108c SS |
2348 | int result = 1; |
2349 | ||
23860348 | 2350 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
2351 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
2352 | >= get_remote_packet_size ()) | |
ea9c271d | 2353 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 2354 | |
6d820c5c DJ |
2355 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2356 | putpkt (rs->buf); | |
2357 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2358 | |
d8f2712d | 2359 | if (*rs->buf == '\0') |
21bce120 | 2360 | return 0; |
d8f2712d VP |
2361 | else |
2362 | *result_count = | |
2363 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2364 | threadlist, done); | |
c906108c SS |
2365 | |
2366 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2367 | { | |
23860348 MS |
2368 | /* FIXME: This is a good reason to drop the packet. */ |
2369 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2370 | /* Possabilities : |
2371 | retransmit immediatly - race conditions | |
2372 | retransmit after timeout - yes | |
2373 | exit | |
2374 | wait for packet, then exit | |
2375 | */ | |
8a3fe4f8 | 2376 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2377 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2378 | } |
2379 | if (*result_count <= 0) | |
2380 | { | |
2381 | if (*done != 1) | |
2382 | { | |
8a3fe4f8 | 2383 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2384 | result = 0; |
2385 | } | |
2386 | return result; /* break; */ | |
2387 | } | |
2388 | if (*result_count > result_limit) | |
2389 | { | |
2390 | *result_count = 0; | |
8a3fe4f8 | 2391 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2392 | return 0; |
2393 | } | |
2394 | return result; | |
2395 | } | |
2396 | ||
23860348 MS |
2397 | /* This is the interface between remote and threads, remotes upper |
2398 | interface. */ | |
c906108c SS |
2399 | |
2400 | /* remote_find_new_threads retrieves the thread list and for each | |
2401 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2402 | adding the thread if it does not already exist. This involves |
c906108c SS |
2403 | getting partial thread lists from the remote target so, polling the |
2404 | quit_flag is required. */ | |
2405 | ||
2406 | ||
23860348 | 2407 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2408 | |
2409 | #define MAXTHREADLISTRESULTS 32 | |
2410 | ||
2411 | static int | |
fba45db2 KB |
2412 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2413 | int looplimit) | |
c906108c SS |
2414 | { |
2415 | int done, i, result_count; | |
2416 | int startflag = 1; | |
2417 | int result = 1; | |
2418 | int loopcount = 0; | |
2419 | static threadref nextthread; | |
2420 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2421 | ||
2422 | done = 0; | |
2423 | while (!done) | |
2424 | { | |
2425 | if (loopcount++ > looplimit) | |
2426 | { | |
2427 | result = 0; | |
8a3fe4f8 | 2428 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2429 | break; |
2430 | } | |
2431 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2432 | &done, &result_count, resultthreadlist)) | |
2433 | { | |
2434 | result = 0; | |
2435 | break; | |
2436 | } | |
23860348 | 2437 | /* Clear for later iterations. */ |
c906108c SS |
2438 | startflag = 0; |
2439 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2440 | if (result_count >= 1) | |
2441 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2442 | i = 0; | |
2443 | while (result_count--) | |
2444 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2445 | break; | |
2446 | } | |
2447 | return result; | |
2448 | } | |
2449 | ||
2450 | static int | |
fba45db2 | 2451 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2452 | { |
79d7f229 PA |
2453 | int pid = ptid_get_pid (inferior_ptid); |
2454 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2455 | |
2456 | if (!in_thread_list (ptid)) | |
2457 | add_thread (ptid); | |
c906108c SS |
2458 | return 1; /* continue iterator */ |
2459 | } | |
2460 | ||
2461 | #define CRAZY_MAX_THREADS 1000 | |
2462 | ||
39f77062 KB |
2463 | static ptid_t |
2464 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2465 | { |
d01949b6 | 2466 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2467 | |
2468 | putpkt ("qC"); | |
6d820c5c | 2469 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2470 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2471 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2472 | else |
2473 | return oldpid; | |
2474 | } | |
2475 | ||
802188a7 RM |
2476 | /* Find new threads for info threads command. |
2477 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2478 | */ |
cce74817 JM |
2479 | |
2480 | static void | |
fba45db2 | 2481 | remote_find_new_threads (void) |
c906108c | 2482 | { |
c5aa993b JM |
2483 | remote_threadlist_iterator (remote_newthread_step, 0, |
2484 | CRAZY_MAX_THREADS); | |
c906108c SS |
2485 | } |
2486 | ||
dc146f7c VP |
2487 | #if defined(HAVE_LIBEXPAT) |
2488 | ||
2489 | typedef struct thread_item | |
2490 | { | |
2491 | ptid_t ptid; | |
2492 | char *extra; | |
2493 | int core; | |
2494 | } thread_item_t; | |
2495 | DEF_VEC_O(thread_item_t); | |
2496 | ||
2497 | struct threads_parsing_context | |
2498 | { | |
2499 | VEC (thread_item_t) *items; | |
2500 | }; | |
2501 | ||
2502 | static void | |
2503 | start_thread (struct gdb_xml_parser *parser, | |
2504 | const struct gdb_xml_element *element, | |
2505 | void *user_data, VEC(gdb_xml_value_s) *attributes) | |
2506 | { | |
2507 | struct threads_parsing_context *data = user_data; | |
2508 | ||
2509 | struct thread_item item; | |
2510 | char *id; | |
2511 | ||
2512 | id = VEC_index (gdb_xml_value_s, attributes, 0)->value; | |
2513 | item.ptid = read_ptid (id, NULL); | |
2514 | ||
2515 | if (VEC_length (gdb_xml_value_s, attributes) > 1) | |
3e43a32a MS |
2516 | item.core = *(ULONGEST *) VEC_index (gdb_xml_value_s, |
2517 | attributes, 1)->value; | |
dc146f7c VP |
2518 | else |
2519 | item.core = -1; | |
2520 | ||
2521 | item.extra = 0; | |
2522 | ||
2523 | VEC_safe_push (thread_item_t, data->items, &item); | |
2524 | } | |
2525 | ||
2526 | static void | |
2527 | end_thread (struct gdb_xml_parser *parser, | |
2528 | const struct gdb_xml_element *element, | |
2529 | void *user_data, const char *body_text) | |
2530 | { | |
2531 | struct threads_parsing_context *data = user_data; | |
2532 | ||
2533 | if (body_text && *body_text) | |
2ae2a0b7 | 2534 | VEC_last (thread_item_t, data->items)->extra = xstrdup (body_text); |
dc146f7c VP |
2535 | } |
2536 | ||
2537 | const struct gdb_xml_attribute thread_attributes[] = { | |
2538 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
2539 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
2540 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
2541 | }; | |
2542 | ||
2543 | const struct gdb_xml_element thread_children[] = { | |
2544 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2545 | }; | |
2546 | ||
2547 | const struct gdb_xml_element threads_children[] = { | |
2548 | { "thread", thread_attributes, thread_children, | |
2549 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
2550 | start_thread, end_thread }, | |
2551 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2552 | }; | |
2553 | ||
2554 | const struct gdb_xml_element threads_elements[] = { | |
2555 | { "threads", NULL, threads_children, | |
2556 | GDB_XML_EF_NONE, NULL, NULL }, | |
2557 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
2558 | }; | |
2559 | ||
02357a4a PA |
2560 | /* Discard the contents of the constructed thread info context. */ |
2561 | ||
2562 | static void | |
2563 | clear_threads_parsing_context (void *p) | |
2564 | { | |
2565 | struct threads_parsing_context *context = p; | |
2566 | int i; | |
2567 | struct thread_item *item; | |
2568 | ||
2569 | for (i = 0; VEC_iterate (thread_item_t, context->items, i, item); ++i) | |
2570 | xfree (item->extra); | |
2571 | ||
2572 | VEC_free (thread_item_t, context->items); | |
2573 | } | |
2574 | ||
dc146f7c VP |
2575 | #endif |
2576 | ||
9d1f7ab2 MS |
2577 | /* |
2578 | * Find all threads for info threads command. | |
2579 | * Uses new thread protocol contributed by Cisco. | |
2580 | * Falls back and attempts to use the older method (above) | |
2581 | * if the target doesn't respond to the new method. | |
2582 | */ | |
2583 | ||
0f71a2f6 | 2584 | static void |
28439f5e | 2585 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2586 | { |
d01949b6 | 2587 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2588 | char *bufp; |
79d7f229 | 2589 | ptid_t new_thread; |
0f71a2f6 JM |
2590 | |
2591 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2592 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2593 | |
dc146f7c VP |
2594 | #if defined(HAVE_LIBEXPAT) |
2595 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) | |
2596 | { | |
2597 | char *xml = target_read_stralloc (¤t_target, | |
2598 | TARGET_OBJECT_THREADS, NULL); | |
2599 | ||
2600 | struct cleanup *back_to = make_cleanup (xfree, xml); | |
2601 | if (xml && *xml) | |
2602 | { | |
2603 | struct gdb_xml_parser *parser; | |
2604 | struct threads_parsing_context context; | |
02357a4a | 2605 | struct cleanup *clear_parsing_context; |
dc146f7c VP |
2606 | |
2607 | context.items = 0; | |
02357a4a PA |
2608 | /* Note: this parser cleanup is already guarded by BACK_TO |
2609 | above. */ | |
dc146f7c VP |
2610 | parser = gdb_xml_create_parser_and_cleanup (_("threads"), |
2611 | threads_elements, | |
2612 | &context); | |
2613 | ||
2614 | gdb_xml_use_dtd (parser, "threads.dtd"); | |
2615 | ||
02357a4a PA |
2616 | clear_parsing_context |
2617 | = make_cleanup (clear_threads_parsing_context, &context); | |
2618 | ||
dc146f7c VP |
2619 | if (gdb_xml_parse (parser, xml) == 0) |
2620 | { | |
2621 | int i; | |
2622 | struct thread_item *item; | |
2623 | ||
3e43a32a MS |
2624 | for (i = 0; |
2625 | VEC_iterate (thread_item_t, context.items, i, item); | |
2626 | ++i) | |
dc146f7c VP |
2627 | { |
2628 | if (!ptid_equal (item->ptid, null_ptid)) | |
2629 | { | |
2630 | struct private_thread_info *info; | |
2631 | /* In non-stop mode, we assume new found threads | |
2632 | are running until proven otherwise with a | |
2633 | stop reply. In all-stop, we can only get | |
2634 | here if all threads are stopped. */ | |
2635 | int running = non_stop ? 1 : 0; | |
2636 | ||
2637 | remote_notice_new_inferior (item->ptid, running); | |
2638 | ||
2639 | info = demand_private_info (item->ptid); | |
2640 | info->core = item->core; | |
2641 | info->extra = item->extra; | |
02357a4a | 2642 | item->extra = NULL; |
dc146f7c | 2643 | } |
dc146f7c VP |
2644 | } |
2645 | } | |
2646 | ||
02357a4a | 2647 | do_cleanups (clear_parsing_context); |
dc146f7c VP |
2648 | } |
2649 | ||
2650 | do_cleanups (back_to); | |
2651 | return; | |
2652 | } | |
2653 | #endif | |
2654 | ||
9d1f7ab2 MS |
2655 | if (use_threadinfo_query) |
2656 | { | |
2657 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2658 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2659 | bufp = rs->buf; |
9d1f7ab2 | 2660 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2661 | { |
9d1f7ab2 MS |
2662 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2663 | { | |
2664 | do | |
2665 | { | |
82f73884 | 2666 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2667 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2668 | { |
74531fed | 2669 | /* In non-stop mode, we assume new found threads |
1941c569 | 2670 | are running until proven otherwise with a |
74531fed PA |
2671 | stop reply. In all-stop, we can only get |
2672 | here if all threads are stopped. */ | |
1941c569 PA |
2673 | int running = non_stop ? 1 : 0; |
2674 | ||
2675 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2676 | } |
9d1f7ab2 MS |
2677 | } |
2678 | while (*bufp++ == ','); /* comma-separated list */ | |
2679 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2680 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2681 | bufp = rs->buf; |
9d1f7ab2 MS |
2682 | } |
2683 | return; /* done */ | |
2684 | } | |
2685 | } | |
2686 | ||
74531fed PA |
2687 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2688 | if (non_stop) | |
2689 | return; | |
2690 | ||
23860348 | 2691 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2692 | use_threadinfo_query = 0; |
2693 | remote_find_new_threads (); | |
2694 | return; | |
2695 | } | |
2696 | ||
802188a7 | 2697 | /* |
9d1f7ab2 MS |
2698 | * Collect a descriptive string about the given thread. |
2699 | * The target may say anything it wants to about the thread | |
2700 | * (typically info about its blocked / runnable state, name, etc.). | |
2701 | * This string will appear in the info threads display. | |
802188a7 | 2702 | * |
9d1f7ab2 MS |
2703 | * Optional: targets are not required to implement this function. |
2704 | */ | |
2705 | ||
2706 | static char * | |
2707 | remote_threads_extra_info (struct thread_info *tp) | |
2708 | { | |
d01949b6 | 2709 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2710 | int result; |
2711 | int set; | |
2712 | threadref id; | |
2713 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2714 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2715 | int n = 0; /* position in display_buf */ |
2716 | ||
2717 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2718 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2719 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2720 | |
60e569b9 PA |
2721 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2722 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2723 | /* This is the main thread which was added by GDB. The remote | |
2724 | server doesn't know about it. */ | |
2725 | return NULL; | |
2726 | ||
dc146f7c VP |
2727 | if (remote_protocol_packets[PACKET_qXfer_threads].support == PACKET_ENABLE) |
2728 | { | |
2729 | struct thread_info *info = find_thread_ptid (tp->ptid); | |
a744cf53 | 2730 | |
dc146f7c VP |
2731 | if (info && info->private) |
2732 | return info->private->extra; | |
2733 | else | |
2734 | return NULL; | |
2735 | } | |
2736 | ||
9d1f7ab2 MS |
2737 | if (use_threadextra_query) |
2738 | { | |
82f73884 PA |
2739 | char *b = rs->buf; |
2740 | char *endb = rs->buf + get_remote_packet_size (); | |
2741 | ||
2742 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2743 | b += strlen (b); | |
2744 | write_ptid (b, endb, tp->ptid); | |
2745 | ||
2e9f7625 | 2746 | putpkt (rs->buf); |
6d820c5c | 2747 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2748 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2749 | { |
2e9f7625 DJ |
2750 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2751 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2752 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2753 | return display_buf; |
2754 | } | |
0f71a2f6 | 2755 | } |
9d1f7ab2 MS |
2756 | |
2757 | /* If the above query fails, fall back to the old method. */ | |
2758 | use_threadextra_query = 0; | |
2759 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2760 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2761 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2762 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2763 | if (threadinfo.active) | |
0f71a2f6 | 2764 | { |
9d1f7ab2 | 2765 | if (*threadinfo.shortname) |
2bc416ba | 2766 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2767 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2768 | if (*threadinfo.display) |
2bc416ba | 2769 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2770 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2771 | if (*threadinfo.more_display) |
2bc416ba | 2772 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2773 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2774 | |
2775 | if (n > 0) | |
c5aa993b | 2776 | { |
23860348 | 2777 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2778 | if (',' == display_buf[n-1]) |
2779 | display_buf[n-1] = ' '; | |
2780 | return display_buf; | |
c5aa993b | 2781 | } |
0f71a2f6 | 2782 | } |
9d1f7ab2 | 2783 | return NULL; |
0f71a2f6 | 2784 | } |
c906108c | 2785 | \f |
c5aa993b | 2786 | |
0fb4aa4b PA |
2787 | static int |
2788 | remote_static_tracepoint_marker_at (CORE_ADDR addr, | |
2789 | struct static_tracepoint_marker *marker) | |
2790 | { | |
2791 | struct remote_state *rs = get_remote_state (); | |
2792 | char *p = rs->buf; | |
2793 | ||
2794 | sprintf (p, "qTSTMat:"); | |
2795 | p += strlen (p); | |
2796 | p += hexnumstr (p, addr); | |
2797 | putpkt (rs->buf); | |
2798 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2799 | p = rs->buf; | |
2800 | ||
2801 | if (*p == 'E') | |
2802 | error (_("Remote failure reply: %s"), p); | |
2803 | ||
2804 | if (*p++ == 'm') | |
2805 | { | |
2806 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2807 | return 1; | |
2808 | } | |
2809 | ||
2810 | return 0; | |
2811 | } | |
2812 | ||
2813 | static void | |
2814 | free_current_marker (void *arg) | |
2815 | { | |
2816 | struct static_tracepoint_marker **marker_p = arg; | |
2817 | ||
2818 | if (*marker_p != NULL) | |
2819 | { | |
2820 | release_static_tracepoint_marker (*marker_p); | |
2821 | xfree (*marker_p); | |
2822 | } | |
2823 | else | |
2824 | *marker_p = NULL; | |
2825 | } | |
2826 | ||
2827 | static VEC(static_tracepoint_marker_p) * | |
2828 | remote_static_tracepoint_markers_by_strid (const char *strid) | |
2829 | { | |
2830 | struct remote_state *rs = get_remote_state (); | |
2831 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
2832 | struct static_tracepoint_marker *marker = NULL; | |
2833 | struct cleanup *old_chain; | |
2834 | char *p; | |
2835 | ||
2836 | /* Ask for a first packet of static tracepoint marker | |
2837 | definition. */ | |
2838 | putpkt ("qTfSTM"); | |
2839 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2840 | p = rs->buf; | |
2841 | if (*p == 'E') | |
2842 | error (_("Remote failure reply: %s"), p); | |
2843 | ||
2844 | old_chain = make_cleanup (free_current_marker, &marker); | |
2845 | ||
2846 | while (*p++ == 'm') | |
2847 | { | |
2848 | if (marker == NULL) | |
2849 | marker = XCNEW (struct static_tracepoint_marker); | |
2850 | ||
2851 | do | |
2852 | { | |
2853 | parse_static_tracepoint_marker_definition (p, &p, marker); | |
2854 | ||
2855 | if (strid == NULL || strcmp (strid, marker->str_id) == 0) | |
2856 | { | |
2857 | VEC_safe_push (static_tracepoint_marker_p, | |
2858 | markers, marker); | |
2859 | marker = NULL; | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | release_static_tracepoint_marker (marker); | |
2864 | memset (marker, 0, sizeof (*marker)); | |
2865 | } | |
2866 | } | |
2867 | while (*p++ == ','); /* comma-separated list */ | |
2868 | /* Ask for another packet of static tracepoint definition. */ | |
2869 | putpkt ("qTsSTM"); | |
2870 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2871 | p = rs->buf; | |
2872 | } | |
2873 | ||
2874 | do_cleanups (old_chain); | |
2875 | return markers; | |
2876 | } | |
2877 | ||
2878 | \f | |
10760264 JB |
2879 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
2880 | ||
2881 | static ptid_t | |
2882 | remote_get_ada_task_ptid (long lwp, long thread) | |
2883 | { | |
2884 | return ptid_build (ptid_get_pid (inferior_ptid), 0, lwp); | |
2885 | } | |
2886 | \f | |
2887 | ||
24b06219 | 2888 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2889 | |
2890 | static void | |
fba45db2 | 2891 | extended_remote_restart (void) |
c906108c | 2892 | { |
d01949b6 | 2893 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2894 | |
2895 | /* Send the restart command; for reasons I don't understand the | |
2896 | remote side really expects a number after the "R". */ | |
ea9c271d | 2897 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2898 | putpkt (rs->buf); |
c906108c | 2899 | |
ad9a8f3f | 2900 | remote_fileio_reset (); |
c906108c SS |
2901 | } |
2902 | \f | |
2903 | /* Clean up connection to a remote debugger. */ | |
2904 | ||
c906108c | 2905 | static void |
fba45db2 | 2906 | remote_close (int quitting) |
c906108c | 2907 | { |
d3fd5342 PA |
2908 | if (remote_desc == NULL) |
2909 | return; /* already closed */ | |
2910 | ||
2911 | /* Make sure we leave stdin registered in the event loop, and we | |
2912 | don't leave the async SIGINT signal handler installed. */ | |
2913 | remote_terminal_ours (); | |
ce5ce7ed | 2914 | |
d3fd5342 PA |
2915 | serial_close (remote_desc); |
2916 | remote_desc = NULL; | |
ce5ce7ed PA |
2917 | |
2918 | /* We don't have a connection to the remote stub anymore. Get rid | |
2919 | of all the inferiors and their threads we were controlling. */ | |
2920 | discard_all_inferiors (); | |
0f2caa1b | 2921 | inferior_ptid = null_ptid; |
ce5ce7ed | 2922 | |
74531fed PA |
2923 | /* We're no longer interested in any of these events. */ |
2924 | discard_pending_stop_replies (-1); | |
2925 | ||
2926 | if (remote_async_inferior_event_token) | |
2927 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2928 | if (remote_async_get_pending_events_token) | |
2929 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2930 | } |
2931 | ||
23860348 | 2932 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2933 | |
2934 | static void | |
fba45db2 | 2935 | get_offsets (void) |
c906108c | 2936 | { |
d01949b6 | 2937 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2938 | char *buf; |
085dd6e6 | 2939 | char *ptr; |
31d99776 DJ |
2940 | int lose, num_segments = 0, do_sections, do_segments; |
2941 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2942 | struct section_offsets *offs; |
31d99776 DJ |
2943 | struct symfile_segment_data *data; |
2944 | ||
2945 | if (symfile_objfile == NULL) | |
2946 | return; | |
c906108c SS |
2947 | |
2948 | putpkt ("qOffsets"); | |
6d820c5c | 2949 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2950 | buf = rs->buf; |
c906108c SS |
2951 | |
2952 | if (buf[0] == '\000') | |
2953 | return; /* Return silently. Stub doesn't support | |
23860348 | 2954 | this command. */ |
c906108c SS |
2955 | if (buf[0] == 'E') |
2956 | { | |
8a3fe4f8 | 2957 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2958 | return; |
2959 | } | |
2960 | ||
2961 | /* Pick up each field in turn. This used to be done with scanf, but | |
2962 | scanf will make trouble if CORE_ADDR size doesn't match | |
2963 | conversion directives correctly. The following code will work | |
2964 | with any size of CORE_ADDR. */ | |
2965 | text_addr = data_addr = bss_addr = 0; | |
2966 | ptr = buf; | |
2967 | lose = 0; | |
2968 | ||
2969 | if (strncmp (ptr, "Text=", 5) == 0) | |
2970 | { | |
2971 | ptr += 5; | |
2972 | /* Don't use strtol, could lose on big values. */ | |
2973 | while (*ptr && *ptr != ';') | |
2974 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2975 | |
31d99776 DJ |
2976 | if (strncmp (ptr, ";Data=", 6) == 0) |
2977 | { | |
2978 | ptr += 6; | |
2979 | while (*ptr && *ptr != ';') | |
2980 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2981 | } | |
2982 | else | |
2983 | lose = 1; | |
2984 | ||
2985 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2986 | { | |
2987 | ptr += 5; | |
2988 | while (*ptr && *ptr != ';') | |
2989 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2990 | |
31d99776 DJ |
2991 | if (bss_addr != data_addr) |
2992 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2993 | } | |
2994 | else | |
2995 | lose = 1; | |
2996 | } | |
2997 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2998 | { |
31d99776 DJ |
2999 | ptr += 8; |
3000 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 3001 | while (*ptr && *ptr != ';') |
31d99776 DJ |
3002 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
3003 | num_segments = 1; | |
3004 | ||
3005 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
3006 | { | |
3007 | ptr += 9; | |
3008 | while (*ptr && *ptr != ';') | |
3009 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
3010 | num_segments++; | |
3011 | } | |
c906108c SS |
3012 | } |
3013 | else | |
3014 | lose = 1; | |
3015 | ||
3016 | if (lose) | |
8a3fe4f8 | 3017 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
3018 | else if (*ptr != '\0') |
3019 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 3020 | |
802188a7 | 3021 | offs = ((struct section_offsets *) |
a39a16c4 | 3022 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 3023 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 3024 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 3025 | |
31d99776 DJ |
3026 | data = get_symfile_segment_data (symfile_objfile->obfd); |
3027 | do_segments = (data != NULL); | |
3028 | do_sections = num_segments == 0; | |
c906108c | 3029 | |
28c32713 | 3030 | if (num_segments > 0) |
31d99776 | 3031 | { |
31d99776 DJ |
3032 | segments[0] = text_addr; |
3033 | segments[1] = data_addr; | |
3034 | } | |
28c32713 JB |
3035 | /* If we have two segments, we can still try to relocate everything |
3036 | by assuming that the .text and .data offsets apply to the whole | |
3037 | text and data segments. Convert the offsets given in the packet | |
3038 | to base addresses for symfile_map_offsets_to_segments. */ | |
3039 | else if (data && data->num_segments == 2) | |
3040 | { | |
3041 | segments[0] = data->segment_bases[0] + text_addr; | |
3042 | segments[1] = data->segment_bases[1] + data_addr; | |
3043 | num_segments = 2; | |
3044 | } | |
8d385431 DJ |
3045 | /* If the object file has only one segment, assume that it is text |
3046 | rather than data; main programs with no writable data are rare, | |
3047 | but programs with no code are useless. Of course the code might | |
3048 | have ended up in the data segment... to detect that we would need | |
3049 | the permissions here. */ | |
3050 | else if (data && data->num_segments == 1) | |
3051 | { | |
3052 | segments[0] = data->segment_bases[0] + text_addr; | |
3053 | num_segments = 1; | |
3054 | } | |
28c32713 JB |
3055 | /* There's no way to relocate by segment. */ |
3056 | else | |
3057 | do_segments = 0; | |
31d99776 DJ |
3058 | |
3059 | if (do_segments) | |
3060 | { | |
3061 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
3062 | offs, num_segments, segments); | |
3063 | ||
3064 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
3065 | error (_("Can not handle qOffsets TextSeg " |
3066 | "response with this symbol file")); | |
31d99776 DJ |
3067 | |
3068 | if (ret > 0) | |
3069 | do_sections = 0; | |
3070 | } | |
c906108c | 3071 | |
9ef895d6 DJ |
3072 | if (data) |
3073 | free_symfile_segment_data (data); | |
31d99776 DJ |
3074 | |
3075 | if (do_sections) | |
3076 | { | |
3077 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
3078 | ||
3e43a32a MS |
3079 | /* This is a temporary kludge to force data and bss to use the |
3080 | same offsets because that's what nlmconv does now. The real | |
3081 | solution requires changes to the stub and remote.c that I | |
3082 | don't have time to do right now. */ | |
31d99776 DJ |
3083 | |
3084 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
3085 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
3086 | } | |
c906108c SS |
3087 | |
3088 | objfile_relocate (symfile_objfile, offs); | |
3089 | } | |
3090 | ||
74531fed PA |
3091 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
3092 | threads we know are stopped already. This is used during the | |
3093 | initial remote connection in non-stop mode --- threads that are | |
3094 | reported as already being stopped are left stopped. */ | |
3095 | ||
3096 | static int | |
3097 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
3098 | { | |
3099 | /* If we have a stop reply for this thread, it must be stopped. */ | |
3100 | if (peek_stop_reply (thread->ptid)) | |
3101 | set_stop_requested (thread->ptid, 1); | |
3102 | ||
3103 | return 0; | |
3104 | } | |
3105 | ||
8621d6a9 | 3106 | /* Stub for catch_exception. */ |
0f71a2f6 | 3107 | |
2d717e4f DJ |
3108 | struct start_remote_args |
3109 | { | |
3110 | int from_tty; | |
3111 | ||
3112 | /* The current target. */ | |
3113 | struct target_ops *target; | |
3114 | ||
3115 | /* Non-zero if this is an extended-remote target. */ | |
3116 | int extended_p; | |
3117 | }; | |
3118 | ||
9a7071a8 JB |
3119 | /* Send interrupt_sequence to remote target. */ |
3120 | static void | |
3121 | send_interrupt_sequence () | |
3122 | { | |
3123 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
3124 | serial_write (remote_desc, "\x03", 1); | |
3125 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
3126 | serial_send_break (remote_desc); | |
3127 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
3128 | { | |
3129 | serial_send_break (remote_desc); | |
3130 | serial_write (remote_desc, "g", 1); | |
3131 | } | |
3132 | else | |
3133 | internal_error (__FILE__, __LINE__, | |
3134 | _("Invalid value for interrupt_sequence_mode: %s."), | |
3135 | interrupt_sequence_mode); | |
3136 | } | |
3137 | ||
9cbc821d | 3138 | static void |
2d717e4f | 3139 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 3140 | { |
2d717e4f | 3141 | struct start_remote_args *args = opaque; |
c8d104ad PA |
3142 | struct remote_state *rs = get_remote_state (); |
3143 | struct packet_config *noack_config; | |
2d717e4f | 3144 | char *wait_status = NULL; |
8621d6a9 | 3145 | |
23860348 | 3146 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 3147 | |
c8d104ad PA |
3148 | /* Ack any packet which the remote side has already sent. */ |
3149 | serial_write (remote_desc, "+", 1); | |
3150 | ||
9a7071a8 JB |
3151 | if (interrupt_on_connect) |
3152 | send_interrupt_sequence (); | |
3153 | ||
c8d104ad PA |
3154 | /* The first packet we send to the target is the optional "supported |
3155 | packets" request. If the target can answer this, it will tell us | |
3156 | which later probes to skip. */ | |
3157 | remote_query_supported (); | |
3158 | ||
d914c394 SS |
3159 | /* If the stub wants to get a QAllow, compose one and send it. */ |
3160 | if (remote_protocol_packets[PACKET_QAllow].support != PACKET_DISABLE) | |
3161 | remote_set_permissions (); | |
3162 | ||
c8d104ad PA |
3163 | /* Next, we possibly activate noack mode. |
3164 | ||
3165 | If the QStartNoAckMode packet configuration is set to AUTO, | |
3166 | enable noack mode if the stub reported a wish for it with | |
3167 | qSupported. | |
3168 | ||
3169 | If set to TRUE, then enable noack mode even if the stub didn't | |
3170 | report it in qSupported. If the stub doesn't reply OK, the | |
3171 | session ends with an error. | |
3172 | ||
3173 | If FALSE, then don't activate noack mode, regardless of what the | |
3174 | stub claimed should be the default with qSupported. */ | |
3175 | ||
3176 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
3177 | ||
3178 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
3179 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
3180 | && noack_config->support == PACKET_ENABLE)) | |
3181 | { | |
3182 | putpkt ("QStartNoAckMode"); | |
3183 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3184 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
3185 | rs->noack_mode = 1; | |
3186 | } | |
3187 | ||
5fe04517 PA |
3188 | if (args->extended_p) |
3189 | { | |
3190 | /* Tell the remote that we are using the extended protocol. */ | |
3191 | putpkt ("!"); | |
3192 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3193 | } | |
3194 | ||
d962ef82 DJ |
3195 | /* Next, if the target can specify a description, read it. We do |
3196 | this before anything involving memory or registers. */ | |
3197 | target_find_description (); | |
3198 | ||
6c95b8df PA |
3199 | /* Next, now that we know something about the target, update the |
3200 | address spaces in the program spaces. */ | |
3201 | update_address_spaces (); | |
3202 | ||
50c71eaf PA |
3203 | /* On OSs where the list of libraries is global to all |
3204 | processes, we fetch them early. */ | |
3205 | if (gdbarch_has_global_solist (target_gdbarch)) | |
3206 | solib_add (NULL, args->from_tty, args->target, auto_solib_add); | |
3207 | ||
74531fed PA |
3208 | if (non_stop) |
3209 | { | |
3210 | if (!rs->non_stop_aware) | |
3e43a32a MS |
3211 | error (_("Non-stop mode requested, but remote " |
3212 | "does not support non-stop")); | |
74531fed PA |
3213 | |
3214 | putpkt ("QNonStop:1"); | |
3215 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3216 | ||
3217 | if (strcmp (rs->buf, "OK") != 0) | |
3218 | error ("Remote refused setting non-stop mode with: %s", rs->buf); | |
3219 | ||
3220 | /* Find about threads and processes the stub is already | |
3221 | controlling. We default to adding them in the running state. | |
3222 | The '?' query below will then tell us about which threads are | |
3223 | stopped. */ | |
28439f5e | 3224 | remote_threads_info (args->target); |
74531fed PA |
3225 | } |
3226 | else if (rs->non_stop_aware) | |
3227 | { | |
3228 | /* Don't assume that the stub can operate in all-stop mode. | |
3229 | Request it explicitely. */ | |
3230 | putpkt ("QNonStop:0"); | |
3231 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3232 | ||
3233 | if (strcmp (rs->buf, "OK") != 0) | |
3234 | error ("Remote refused setting all-stop mode with: %s", rs->buf); | |
3235 | } | |
3236 | ||
2d717e4f DJ |
3237 | /* Check whether the target is running now. */ |
3238 | putpkt ("?"); | |
3239 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3240 | ||
74531fed | 3241 | if (!non_stop) |
2d717e4f | 3242 | { |
74531fed | 3243 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 3244 | { |
c35b1492 | 3245 | if (!args->extended_p) |
74531fed | 3246 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
3247 | |
3248 | /* We're connected, but not running. Drop out before we | |
3249 | call start_remote. */ | |
3250 | return; | |
2d717e4f DJ |
3251 | } |
3252 | else | |
74531fed | 3253 | { |
74531fed PA |
3254 | /* Save the reply for later. */ |
3255 | wait_status = alloca (strlen (rs->buf) + 1); | |
3256 | strcpy (wait_status, rs->buf); | |
3257 | } | |
3258 | ||
3259 | /* Let the stub know that we want it to return the thread. */ | |
3260 | set_continue_thread (minus_one_ptid); | |
3261 | ||
3262 | /* Without this, some commands which require an active target | |
3263 | (such as kill) won't work. This variable serves (at least) | |
3264 | double duty as both the pid of the target process (if it has | |
3265 | such), and as a flag indicating that a target is active. | |
3266 | These functions should be split out into seperate variables, | |
3267 | especially since GDB will someday have a notion of debugging | |
3268 | several processes. */ | |
3269 | inferior_ptid = magic_null_ptid; | |
3270 | ||
3271 | /* Now, if we have thread information, update inferior_ptid. */ | |
3272 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3273 | ||
0b16c5cf | 3274 | remote_add_inferior (ptid_get_pid (inferior_ptid), -1); |
74531fed PA |
3275 | |
3276 | /* Always add the main thread. */ | |
3277 | add_thread_silent (inferior_ptid); | |
3278 | ||
3279 | get_offsets (); /* Get text, data & bss offsets. */ | |
3280 | ||
d962ef82 DJ |
3281 | /* If we could not find a description using qXfer, and we know |
3282 | how to do it some other way, try again. This is not | |
3283 | supported for non-stop; it could be, but it is tricky if | |
3284 | there are no stopped threads when we connect. */ | |
3285 | if (remote_read_description_p (args->target) | |
3286 | && gdbarch_target_desc (target_gdbarch) == NULL) | |
3287 | { | |
3288 | target_clear_description (); | |
3289 | target_find_description (); | |
3290 | } | |
3291 | ||
74531fed PA |
3292 | /* Use the previously fetched status. */ |
3293 | gdb_assert (wait_status != NULL); | |
3294 | strcpy (rs->buf, wait_status); | |
3295 | rs->cached_wait_status = 1; | |
3296 | ||
3297 | immediate_quit--; | |
3298 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
2d717e4f DJ |
3299 | } |
3300 | else | |
3301 | { | |
68c97600 PA |
3302 | /* Clear WFI global state. Do this before finding about new |
3303 | threads and inferiors, and setting the current inferior. | |
3304 | Otherwise we would clear the proceed status of the current | |
3305 | inferior when we want its stop_soon state to be preserved | |
3306 | (see notice_new_inferior). */ | |
3307 | init_wait_for_inferior (); | |
3308 | ||
74531fed PA |
3309 | /* In non-stop, we will either get an "OK", meaning that there |
3310 | are no stopped threads at this time; or, a regular stop | |
3311 | reply. In the latter case, there may be more than one thread | |
3312 | stopped --- we pull them all out using the vStopped | |
3313 | mechanism. */ | |
3314 | if (strcmp (rs->buf, "OK") != 0) | |
3315 | { | |
3316 | struct stop_reply *stop_reply; | |
3317 | struct cleanup *old_chain; | |
2d717e4f | 3318 | |
74531fed PA |
3319 | stop_reply = stop_reply_xmalloc (); |
3320 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 3321 | |
74531fed PA |
3322 | remote_parse_stop_reply (rs->buf, stop_reply); |
3323 | discard_cleanups (old_chain); | |
c0a2216e | 3324 | |
74531fed PA |
3325 | /* get_pending_stop_replies acks this one, and gets the rest |
3326 | out. */ | |
3327 | pending_stop_reply = stop_reply; | |
3328 | remote_get_pending_stop_replies (); | |
c906108c | 3329 | |
74531fed PA |
3330 | /* Make sure that threads that were stopped remain |
3331 | stopped. */ | |
3332 | iterate_over_threads (set_stop_requested_callback, NULL); | |
3333 | } | |
2d717e4f | 3334 | |
74531fed PA |
3335 | if (target_can_async_p ()) |
3336 | target_async (inferior_event_handler, 0); | |
c906108c | 3337 | |
74531fed PA |
3338 | if (thread_count () == 0) |
3339 | { | |
c35b1492 | 3340 | if (!args->extended_p) |
74531fed | 3341 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 3342 | |
c35b1492 PA |
3343 | /* We're connected, but not running. Drop out before we |
3344 | call start_remote. */ | |
3345 | return; | |
3346 | } | |
74531fed PA |
3347 | |
3348 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 3349 | |
74531fed PA |
3350 | /* Force the stub to choose a thread. */ |
3351 | set_general_thread (null_ptid); | |
c906108c | 3352 | |
74531fed PA |
3353 | /* Query it. */ |
3354 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
3355 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
3356 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 3357 | |
74531fed PA |
3358 | get_offsets (); /* Get text, data & bss offsets. */ |
3359 | ||
3360 | /* In non-stop mode, any cached wait status will be stored in | |
3361 | the stop reply queue. */ | |
3362 | gdb_assert (wait_status == NULL); | |
f0223081 PA |
3363 | |
3364 | /* Update the remote on signals to silently pass, or more | |
3365 | importantly, which to not ignore, in case a previous session | |
3366 | had set some different set of signals to be ignored. */ | |
3367 | remote_pass_signals (); | |
74531fed | 3368 | } |
c8d104ad | 3369 | |
c8d104ad PA |
3370 | /* If we connected to a live target, do some additional setup. */ |
3371 | if (target_has_execution) | |
3372 | { | |
3373 | if (exec_bfd) /* No use without an exec file. */ | |
3374 | remote_check_symbols (symfile_objfile); | |
3375 | } | |
50c71eaf | 3376 | |
d5551862 SS |
3377 | /* Possibly the target has been engaged in a trace run started |
3378 | previously; find out where things are at. */ | |
ad91cd99 | 3379 | if (remote_get_trace_status (current_trace_status ()) != -1) |
d5551862 | 3380 | { |
00bf0b85 SS |
3381 | struct uploaded_tp *uploaded_tps = NULL; |
3382 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
3383 | ||
00bf0b85 SS |
3384 | if (current_trace_status ()->running) |
3385 | printf_filtered (_("Trace is already running on the target.\n")); | |
3386 | ||
3387 | /* Get trace state variables first, they may be checked when | |
3388 | parsing uploaded commands. */ | |
3389 | ||
3390 | remote_upload_trace_state_variables (&uploaded_tsvs); | |
3391 | ||
3392 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
3393 | ||
3394 | remote_upload_tracepoints (&uploaded_tps); | |
3395 | ||
3396 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
3397 | } |
3398 | ||
2567c7d9 PA |
3399 | /* If breakpoints are global, insert them now. */ |
3400 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
3401 | && breakpoints_always_inserted_mode ()) |
3402 | insert_breakpoints (); | |
c906108c SS |
3403 | } |
3404 | ||
3405 | /* Open a connection to a remote debugger. | |
3406 | NAME is the filename used for communication. */ | |
3407 | ||
3408 | static void | |
fba45db2 | 3409 | remote_open (char *name, int from_tty) |
c906108c | 3410 | { |
75c99385 | 3411 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
3412 | } |
3413 | ||
c906108c SS |
3414 | /* Open a connection to a remote debugger using the extended |
3415 | remote gdb protocol. NAME is the filename used for communication. */ | |
3416 | ||
3417 | static void | |
fba45db2 | 3418 | extended_remote_open (char *name, int from_tty) |
c906108c | 3419 | { |
75c99385 | 3420 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
3421 | } |
3422 | ||
c906108c SS |
3423 | /* Generic code for opening a connection to a remote target. */ |
3424 | ||
d471ea57 AC |
3425 | static void |
3426 | init_all_packet_configs (void) | |
3427 | { | |
3428 | int i; | |
a744cf53 | 3429 | |
444abaca DJ |
3430 | for (i = 0; i < PACKET_MAX; i++) |
3431 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
3432 | } |
3433 | ||
23860348 | 3434 | /* Symbol look-up. */ |
dc8acb97 MS |
3435 | |
3436 | static void | |
3437 | remote_check_symbols (struct objfile *objfile) | |
3438 | { | |
d01949b6 | 3439 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
3440 | char *msg, *reply, *tmp; |
3441 | struct minimal_symbol *sym; | |
3442 | int end; | |
3443 | ||
444abaca | 3444 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
3445 | return; |
3446 | ||
3c9c4b83 PA |
3447 | /* Make sure the remote is pointing at the right process. */ |
3448 | set_general_process (); | |
3449 | ||
6d820c5c DJ |
3450 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
3451 | because we need both at the same time. */ | |
ea9c271d | 3452 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 3453 | |
23860348 | 3454 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
3455 | |
3456 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
3457 | getpkt (&rs->buf, &rs->buf_size, 0); |
3458 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 3459 | reply = rs->buf; |
dc8acb97 MS |
3460 | |
3461 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
3462 | { | |
3463 | tmp = &reply[8]; | |
cfd77fa1 | 3464 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
3465 | msg[end] = '\0'; |
3466 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
3467 | if (sym == NULL) | |
ea9c271d | 3468 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 3469 | else |
2bbe3cc1 | 3470 | { |
5af949e3 | 3471 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
3472 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
3473 | ||
3474 | /* If this is a function address, return the start of code | |
3475 | instead of any data function descriptor. */ | |
1cf3db46 | 3476 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
3477 | sym_addr, |
3478 | ¤t_target); | |
3479 | ||
3480 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 3481 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
3482 | } |
3483 | ||
dc8acb97 | 3484 | putpkt (msg); |
6d820c5c | 3485 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3486 | reply = rs->buf; |
dc8acb97 MS |
3487 | } |
3488 | } | |
3489 | ||
9db8d71f DJ |
3490 | static struct serial * |
3491 | remote_serial_open (char *name) | |
3492 | { | |
3493 | static int udp_warning = 0; | |
3494 | ||
3495 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
3496 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
3497 | serial connection is reliable and not the serial connection promising | |
3498 | to be. */ | |
3499 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
3500 | { | |
3e43a32a MS |
3501 | warning (_("The remote protocol may be unreliable over UDP.\n" |
3502 | "Some events may be lost, rendering further debugging " | |
3503 | "impossible.")); | |
9db8d71f DJ |
3504 | udp_warning = 1; |
3505 | } | |
3506 | ||
3507 | return serial_open (name); | |
3508 | } | |
3509 | ||
d914c394 SS |
3510 | /* Inform the target of our permission settings. The permission flags |
3511 | work without this, but if the target knows the settings, it can do | |
3512 | a couple things. First, it can add its own check, to catch cases | |
3513 | that somehow manage to get by the permissions checks in target | |
3514 | methods. Second, if the target is wired to disallow particular | |
3515 | settings (for instance, a system in the field that is not set up to | |
3516 | be able to stop at a breakpoint), it can object to any unavailable | |
3517 | permissions. */ | |
3518 | ||
3519 | void | |
3520 | remote_set_permissions (void) | |
3521 | { | |
3522 | struct remote_state *rs = get_remote_state (); | |
3523 | ||
3524 | sprintf (rs->buf, "QAllow:" | |
3525 | "WriteReg:%x;WriteMem:%x;" | |
3526 | "InsertBreak:%x;InsertTrace:%x;" | |
3527 | "InsertFastTrace:%x;Stop:%x", | |
3528 | may_write_registers, may_write_memory, | |
3529 | may_insert_breakpoints, may_insert_tracepoints, | |
3530 | may_insert_fast_tracepoints, may_stop); | |
3531 | putpkt (rs->buf); | |
3532 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3533 | ||
3534 | /* If the target didn't like the packet, warn the user. Do not try | |
3535 | to undo the user's settings, that would just be maddening. */ | |
3536 | if (strcmp (rs->buf, "OK") != 0) | |
3537 | warning ("Remote refused setting permissions with: %s", rs->buf); | |
3538 | } | |
3539 | ||
be2a5f71 DJ |
3540 | /* This type describes each known response to the qSupported |
3541 | packet. */ | |
3542 | struct protocol_feature | |
3543 | { | |
3544 | /* The name of this protocol feature. */ | |
3545 | const char *name; | |
3546 | ||
3547 | /* The default for this protocol feature. */ | |
3548 | enum packet_support default_support; | |
3549 | ||
3550 | /* The function to call when this feature is reported, or after | |
3551 | qSupported processing if the feature is not supported. | |
3552 | The first argument points to this structure. The second | |
3553 | argument indicates whether the packet requested support be | |
3554 | enabled, disabled, or probed (or the default, if this function | |
3555 | is being called at the end of processing and this feature was | |
3556 | not reported). The third argument may be NULL; if not NULL, it | |
3557 | is a NUL-terminated string taken from the packet following | |
3558 | this feature's name and an equals sign. */ | |
3559 | void (*func) (const struct protocol_feature *, enum packet_support, | |
3560 | const char *); | |
3561 | ||
3562 | /* The corresponding packet for this feature. Only used if | |
3563 | FUNC is remote_supported_packet. */ | |
3564 | int packet; | |
3565 | }; | |
3566 | ||
be2a5f71 DJ |
3567 | static void |
3568 | remote_supported_packet (const struct protocol_feature *feature, | |
3569 | enum packet_support support, | |
3570 | const char *argument) | |
3571 | { | |
3572 | if (argument) | |
3573 | { | |
3574 | warning (_("Remote qSupported response supplied an unexpected value for" | |
3575 | " \"%s\"."), feature->name); | |
3576 | return; | |
3577 | } | |
3578 | ||
3579 | if (remote_protocol_packets[feature->packet].support | |
3580 | == PACKET_SUPPORT_UNKNOWN) | |
3581 | remote_protocol_packets[feature->packet].support = support; | |
3582 | } | |
be2a5f71 DJ |
3583 | |
3584 | static void | |
3585 | remote_packet_size (const struct protocol_feature *feature, | |
3586 | enum packet_support support, const char *value) | |
3587 | { | |
3588 | struct remote_state *rs = get_remote_state (); | |
3589 | ||
3590 | int packet_size; | |
3591 | char *value_end; | |
3592 | ||
3593 | if (support != PACKET_ENABLE) | |
3594 | return; | |
3595 | ||
3596 | if (value == NULL || *value == '\0') | |
3597 | { | |
3598 | warning (_("Remote target reported \"%s\" without a size."), | |
3599 | feature->name); | |
3600 | return; | |
3601 | } | |
3602 | ||
3603 | errno = 0; | |
3604 | packet_size = strtol (value, &value_end, 16); | |
3605 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
3606 | { | |
3607 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
3608 | feature->name, value); | |
3609 | return; | |
3610 | } | |
3611 | ||
3612 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
3613 | { | |
3614 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
3615 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
3616 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3617 | } | |
3618 | ||
3619 | /* Record the new maximum packet size. */ | |
3620 | rs->explicit_packet_size = packet_size; | |
3621 | } | |
3622 | ||
82f73884 PA |
3623 | static void |
3624 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3625 | enum packet_support support, const char *value) | |
3626 | { | |
3627 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3628 | |
82f73884 PA |
3629 | rs->multi_process_aware = (support == PACKET_ENABLE); |
3630 | } | |
3631 | ||
74531fed PA |
3632 | static void |
3633 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3634 | enum packet_support support, const char *value) | |
3635 | { | |
3636 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3637 | |
74531fed PA |
3638 | rs->non_stop_aware = (support == PACKET_ENABLE); |
3639 | } | |
3640 | ||
782b2b07 SS |
3641 | static void |
3642 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3643 | enum packet_support support, | |
3644 | const char *value) | |
3645 | { | |
3646 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3647 | |
782b2b07 SS |
3648 | rs->cond_tracepoints = (support == PACKET_ENABLE); |
3649 | } | |
3650 | ||
7a697b8d SS |
3651 | static void |
3652 | remote_fast_tracepoint_feature (const struct protocol_feature *feature, | |
3653 | enum packet_support support, | |
3654 | const char *value) | |
3655 | { | |
3656 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3657 | |
7a697b8d SS |
3658 | rs->fast_tracepoints = (support == PACKET_ENABLE); |
3659 | } | |
3660 | ||
0fb4aa4b PA |
3661 | static void |
3662 | remote_static_tracepoint_feature (const struct protocol_feature *feature, | |
3663 | enum packet_support support, | |
3664 | const char *value) | |
3665 | { | |
3666 | struct remote_state *rs = get_remote_state (); | |
3667 | ||
3668 | rs->static_tracepoints = (support == PACKET_ENABLE); | |
3669 | } | |
3670 | ||
d5551862 SS |
3671 | static void |
3672 | remote_disconnected_tracing_feature (const struct protocol_feature *feature, | |
3673 | enum packet_support support, | |
3674 | const char *value) | |
3675 | { | |
3676 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 3677 | |
d5551862 SS |
3678 | rs->disconnected_tracing = (support == PACKET_ENABLE); |
3679 | } | |
3680 | ||
be2a5f71 | 3681 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3682 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3683 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3684 | PACKET_qXfer_auxv }, |
23181151 DJ |
3685 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3686 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3687 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3688 | PACKET_qXfer_libraries }, | |
fd79ecee | 3689 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3690 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3691 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3692 | PACKET_qXfer_spu_read }, | |
3693 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3694 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3695 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3696 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
3697 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
3698 | PACKET_qXfer_threads }, | |
89be2091 DJ |
3699 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3700 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3701 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3702 | PACKET_QStartNoAckMode }, | |
82f73884 | 3703 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3704 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3705 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3706 | PACKET_qXfer_siginfo_read }, | |
3707 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3708 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3709 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3710 | PACKET_ConditionalTracepoints }, | |
7a697b8d SS |
3711 | { "FastTracepoints", PACKET_DISABLE, remote_fast_tracepoint_feature, |
3712 | PACKET_FastTracepoints }, | |
0fb4aa4b PA |
3713 | { "StaticTracepoints", PACKET_DISABLE, remote_static_tracepoint_feature, |
3714 | PACKET_StaticTracepoints }, | |
d5551862 SS |
3715 | { "DisconnectedTracing", PACKET_DISABLE, remote_disconnected_tracing_feature, |
3716 | -1 }, | |
40ab02ce MS |
3717 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
3718 | PACKET_bc }, | |
3719 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
3720 | PACKET_bs }, | |
409873ef SS |
3721 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
3722 | PACKET_TracepointSource }, | |
d914c394 SS |
3723 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
3724 | PACKET_QAllow }, | |
be2a5f71 DJ |
3725 | }; |
3726 | ||
c8d5aac9 L |
3727 | static char *remote_support_xml; |
3728 | ||
3729 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
3730 | ||
3731 | void | |
6e39997a | 3732 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
3733 | { |
3734 | #if defined(HAVE_LIBEXPAT) | |
3735 | if (remote_support_xml == NULL) | |
c4f7c687 | 3736 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
3737 | else |
3738 | { | |
3739 | char *copy = xstrdup (remote_support_xml + 13); | |
3740 | char *p = strtok (copy, ","); | |
3741 | ||
3742 | do | |
3743 | { | |
3744 | if (strcmp (p, xml) == 0) | |
3745 | { | |
3746 | /* already there */ | |
3747 | xfree (copy); | |
3748 | return; | |
3749 | } | |
3750 | } | |
3751 | while ((p = strtok (NULL, ",")) != NULL); | |
3752 | xfree (copy); | |
3753 | ||
94b0dee1 PA |
3754 | remote_support_xml = reconcat (remote_support_xml, |
3755 | remote_support_xml, ",", xml, | |
3756 | (char *) NULL); | |
c8d5aac9 L |
3757 | } |
3758 | #endif | |
3759 | } | |
3760 | ||
3761 | static char * | |
3762 | remote_query_supported_append (char *msg, const char *append) | |
3763 | { | |
3764 | if (msg) | |
94b0dee1 | 3765 | return reconcat (msg, msg, ";", append, (char *) NULL); |
c8d5aac9 L |
3766 | else |
3767 | return xstrdup (append); | |
3768 | } | |
3769 | ||
be2a5f71 DJ |
3770 | static void |
3771 | remote_query_supported (void) | |
3772 | { | |
3773 | struct remote_state *rs = get_remote_state (); | |
3774 | char *next; | |
3775 | int i; | |
3776 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3777 | ||
3778 | /* The packet support flags are handled differently for this packet | |
3779 | than for most others. We treat an error, a disabled packet, and | |
3780 | an empty response identically: any features which must be reported | |
3781 | to be used will be automatically disabled. An empty buffer | |
3782 | accomplishes this, since that is also the representation for a list | |
3783 | containing no features. */ | |
3784 | ||
3785 | rs->buf[0] = 0; | |
3786 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3787 | { | |
c8d5aac9 | 3788 | char *q = NULL; |
94b0dee1 | 3789 | struct cleanup *old_chain = make_cleanup (free_current_contents, &q); |
c8d5aac9 L |
3790 | |
3791 | if (rs->extended) | |
3792 | q = remote_query_supported_append (q, "multiprocess+"); | |
c8d5aac9 L |
3793 | |
3794 | if (remote_support_xml) | |
3795 | q = remote_query_supported_append (q, remote_support_xml); | |
3796 | ||
dde08ee1 PA |
3797 | q = remote_query_supported_append (q, "qRelocInsn+"); |
3798 | ||
3799 | q = reconcat (q, "qSupported:", q, (char *) NULL); | |
3800 | putpkt (q); | |
82f73884 | 3801 | |
94b0dee1 PA |
3802 | do_cleanups (old_chain); |
3803 | ||
be2a5f71 DJ |
3804 | getpkt (&rs->buf, &rs->buf_size, 0); |
3805 | ||
3806 | /* If an error occured, warn, but do not return - just reset the | |
3807 | buffer to empty and go on to disable features. */ | |
3808 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3809 | == PACKET_ERROR) | |
3810 | { | |
3811 | warning (_("Remote failure reply: %s"), rs->buf); | |
3812 | rs->buf[0] = 0; | |
3813 | } | |
3814 | } | |
3815 | ||
3816 | memset (seen, 0, sizeof (seen)); | |
3817 | ||
3818 | next = rs->buf; | |
3819 | while (*next) | |
3820 | { | |
3821 | enum packet_support is_supported; | |
3822 | char *p, *end, *name_end, *value; | |
3823 | ||
3824 | /* First separate out this item from the rest of the packet. If | |
3825 | there's another item after this, we overwrite the separator | |
3826 | (terminated strings are much easier to work with). */ | |
3827 | p = next; | |
3828 | end = strchr (p, ';'); | |
3829 | if (end == NULL) | |
3830 | { | |
3831 | end = p + strlen (p); | |
3832 | next = end; | |
3833 | } | |
3834 | else | |
3835 | { | |
89be2091 DJ |
3836 | *end = '\0'; |
3837 | next = end + 1; | |
3838 | ||
be2a5f71 DJ |
3839 | if (end == p) |
3840 | { | |
3841 | warning (_("empty item in \"qSupported\" response")); | |
3842 | continue; | |
3843 | } | |
be2a5f71 DJ |
3844 | } |
3845 | ||
3846 | name_end = strchr (p, '='); | |
3847 | if (name_end) | |
3848 | { | |
3849 | /* This is a name=value entry. */ | |
3850 | is_supported = PACKET_ENABLE; | |
3851 | value = name_end + 1; | |
3852 | *name_end = '\0'; | |
3853 | } | |
3854 | else | |
3855 | { | |
3856 | value = NULL; | |
3857 | switch (end[-1]) | |
3858 | { | |
3859 | case '+': | |
3860 | is_supported = PACKET_ENABLE; | |
3861 | break; | |
3862 | ||
3863 | case '-': | |
3864 | is_supported = PACKET_DISABLE; | |
3865 | break; | |
3866 | ||
3867 | case '?': | |
3868 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3869 | break; | |
3870 | ||
3871 | default: | |
3e43a32a MS |
3872 | warning (_("unrecognized item \"%s\" " |
3873 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
3874 | continue; |
3875 | } | |
3876 | end[-1] = '\0'; | |
3877 | } | |
3878 | ||
3879 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3880 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
3881 | { | |
3882 | const struct protocol_feature *feature; | |
3883 | ||
3884 | seen[i] = 1; | |
3885 | feature = &remote_protocol_features[i]; | |
3886 | feature->func (feature, is_supported, value); | |
3887 | break; | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | /* If we increased the packet size, make sure to increase the global | |
3892 | buffer size also. We delay this until after parsing the entire | |
3893 | qSupported packet, because this is the same buffer we were | |
3894 | parsing. */ | |
3895 | if (rs->buf_size < rs->explicit_packet_size) | |
3896 | { | |
3897 | rs->buf_size = rs->explicit_packet_size; | |
3898 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
3899 | } | |
3900 | ||
3901 | /* Handle the defaults for unmentioned features. */ | |
3902 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3903 | if (!seen[i]) | |
3904 | { | |
3905 | const struct protocol_feature *feature; | |
3906 | ||
3907 | feature = &remote_protocol_features[i]; | |
3908 | feature->func (feature, feature->default_support, NULL); | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | ||
c906108c | 3913 | static void |
3e43a32a MS |
3914 | remote_open_1 (char *name, int from_tty, |
3915 | struct target_ops *target, int extended_p) | |
c906108c | 3916 | { |
d01949b6 | 3917 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 3918 | |
c906108c | 3919 | if (name == 0) |
8a3fe4f8 | 3920 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 3921 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 3922 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 3923 | |
23860348 | 3924 | /* See FIXME above. */ |
c6ebd6cf | 3925 | if (!target_async_permitted) |
92d1e331 | 3926 | wait_forever_enabled_p = 1; |
6426a772 | 3927 | |
2d717e4f DJ |
3928 | /* If we're connected to a running target, target_preopen will kill it. |
3929 | But if we're connected to a target system with no running process, | |
3930 | then we will still be connected when it returns. Ask this question | |
3931 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 3932 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3933 | { |
3934 | if (!from_tty | |
3935 | || query (_("Already connected to a remote target. Disconnect? "))) | |
3936 | pop_target (); | |
3937 | else | |
3938 | error (_("Still connected.")); | |
3939 | } | |
3940 | ||
c906108c SS |
3941 | target_preopen (from_tty); |
3942 | ||
3943 | unpush_target (target); | |
3944 | ||
2d717e4f DJ |
3945 | /* This time without a query. If we were connected to an |
3946 | extended-remote target and target_preopen killed the running | |
3947 | process, we may still be connected. If we are starting "target | |
3948 | remote" now, the extended-remote target will not have been | |
3949 | removed by unpush_target. */ | |
c35b1492 | 3950 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3951 | pop_target (); |
3952 | ||
89be2091 DJ |
3953 | /* Make sure we send the passed signals list the next time we resume. */ |
3954 | xfree (last_pass_packet); | |
3955 | last_pass_packet = NULL; | |
3956 | ||
ad9a8f3f | 3957 | remote_fileio_reset (); |
1dd41f16 NS |
3958 | reopen_exec_file (); |
3959 | reread_symbols (); | |
3960 | ||
9db8d71f | 3961 | remote_desc = remote_serial_open (name); |
c906108c SS |
3962 | if (!remote_desc) |
3963 | perror_with_name (name); | |
3964 | ||
3965 | if (baud_rate != -1) | |
3966 | { | |
2cd58942 | 3967 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 3968 | { |
9b74d5d3 KB |
3969 | /* The requested speed could not be set. Error out to |
3970 | top level after closing remote_desc. Take care to | |
3971 | set remote_desc to NULL to avoid closing remote_desc | |
3972 | more than once. */ | |
2cd58942 | 3973 | serial_close (remote_desc); |
9b74d5d3 | 3974 | remote_desc = NULL; |
c906108c SS |
3975 | perror_with_name (name); |
3976 | } | |
3977 | } | |
3978 | ||
2cd58942 | 3979 | serial_raw (remote_desc); |
c906108c SS |
3980 | |
3981 | /* If there is something sitting in the buffer we might take it as a | |
3982 | response to a command, which would be bad. */ | |
2cd58942 | 3983 | serial_flush_input (remote_desc); |
c906108c SS |
3984 | |
3985 | if (from_tty) | |
3986 | { | |
3987 | puts_filtered ("Remote debugging using "); | |
3988 | puts_filtered (name); | |
3989 | puts_filtered ("\n"); | |
3990 | } | |
23860348 | 3991 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 3992 | |
74531fed PA |
3993 | /* Register extra event sources in the event loop. */ |
3994 | remote_async_inferior_event_token | |
3995 | = create_async_event_handler (remote_async_inferior_event_handler, | |
3996 | NULL); | |
3997 | remote_async_get_pending_events_token | |
3998 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
3999 | NULL); | |
4000 | ||
be2a5f71 DJ |
4001 | /* Reset the target state; these things will be queried either by |
4002 | remote_query_supported or as they are needed. */ | |
d471ea57 | 4003 | init_all_packet_configs (); |
74531fed | 4004 | rs->cached_wait_status = 0; |
be2a5f71 | 4005 | rs->explicit_packet_size = 0; |
a6f3e723 | 4006 | rs->noack_mode = 0; |
82f73884 PA |
4007 | rs->multi_process_aware = 0; |
4008 | rs->extended = extended_p; | |
74531fed | 4009 | rs->non_stop_aware = 0; |
e24a49d8 | 4010 | rs->waiting_for_stop_reply = 0; |
3a29589a | 4011 | rs->ctrlc_pending_p = 0; |
802188a7 | 4012 | |
79d7f229 PA |
4013 | general_thread = not_sent_ptid; |
4014 | continue_thread = not_sent_ptid; | |
c906108c | 4015 | |
9d1f7ab2 MS |
4016 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
4017 | use_threadinfo_query = 1; | |
4018 | use_threadextra_query = 1; | |
4019 | ||
c6ebd6cf | 4020 | if (target_async_permitted) |
92d1e331 | 4021 | { |
23860348 | 4022 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
4023 | remote_async_terminal_ours_p = 1; |
4024 | ||
4025 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
4026 | assumed that the target is already ready and able to respond to | |
4027 | requests. Unfortunately remote_start_remote() eventually calls | |
4028 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
4029 | around this. Eventually a mechanism that allows | |
4030 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 4031 | implemented. */ |
92d1e331 DJ |
4032 | wait_forever_enabled_p = 0; |
4033 | } | |
4034 | ||
23860348 | 4035 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 4036 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 4037 | |
74531fed PA |
4038 | /* Start afresh. */ |
4039 | init_thread_list (); | |
4040 | ||
36918e70 | 4041 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
4042 | target (we'd otherwise be in an inconsistent state) and then |
4043 | propogate the error on up the exception chain. This ensures that | |
4044 | the caller doesn't stumble along blindly assuming that the | |
4045 | function succeeded. The CLI doesn't have this problem but other | |
4046 | UI's, such as MI do. | |
36918e70 AC |
4047 | |
4048 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
4049 | this function should return an error indication letting the | |
ce2826aa | 4050 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
4051 | ``target remote'' is directly wired to this function making that |
4052 | impossible. On a positive note, the CLI side of this problem has | |
4053 | been fixed - the function set_cmd_context() makes it possible for | |
4054 | all the ``target ....'' commands to share a common callback | |
4055 | function. See cli-dump.c. */ | |
109c3e39 | 4056 | { |
2d717e4f DJ |
4057 | struct gdb_exception ex; |
4058 | struct start_remote_args args; | |
4059 | ||
4060 | args.from_tty = from_tty; | |
4061 | args.target = target; | |
4062 | args.extended_p = extended_p; | |
4063 | ||
4064 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
4065 | if (ex.reason < 0) |
4066 | { | |
c8d104ad PA |
4067 | /* Pop the partially set up target - unless something else did |
4068 | already before throwing the exception. */ | |
4069 | if (remote_desc != NULL) | |
4070 | pop_target (); | |
c6ebd6cf | 4071 | if (target_async_permitted) |
109c3e39 AC |
4072 | wait_forever_enabled_p = 1; |
4073 | throw_exception (ex); | |
4074 | } | |
4075 | } | |
c906108c | 4076 | |
c6ebd6cf | 4077 | if (target_async_permitted) |
92d1e331 | 4078 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
4079 | } |
4080 | ||
c906108c SS |
4081 | /* This takes a program previously attached to and detaches it. After |
4082 | this is done, GDB can be used to debug some other program. We | |
4083 | better not have left any breakpoints in the target program or it'll | |
4084 | die when it hits one. */ | |
4085 | ||
4086 | static void | |
2d717e4f | 4087 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 4088 | { |
82f73884 | 4089 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 4090 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4091 | |
4092 | if (args) | |
8a3fe4f8 | 4093 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 4094 | |
2d717e4f DJ |
4095 | if (!target_has_execution) |
4096 | error (_("No process to detach from.")); | |
4097 | ||
c906108c | 4098 | /* Tell the remote target to detach. */ |
82f73884 PA |
4099 | if (remote_multi_process_p (rs)) |
4100 | sprintf (rs->buf, "D;%x", pid); | |
4101 | else | |
4102 | strcpy (rs->buf, "D"); | |
4103 | ||
4ddda9b5 PA |
4104 | putpkt (rs->buf); |
4105 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4106 | ||
82f73884 PA |
4107 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
4108 | ; | |
4109 | else if (rs->buf[0] == '\0') | |
4110 | error (_("Remote doesn't know how to detach")); | |
4111 | else | |
4ddda9b5 | 4112 | error (_("Can't detach process.")); |
c906108c | 4113 | |
c906108c | 4114 | if (from_tty) |
2d717e4f | 4115 | { |
82f73884 PA |
4116 | if (remote_multi_process_p (rs)) |
4117 | printf_filtered (_("Detached from remote %s.\n"), | |
4118 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 4119 | else |
82f73884 PA |
4120 | { |
4121 | if (extended) | |
4122 | puts_filtered (_("Detached from remote process.\n")); | |
4123 | else | |
4124 | puts_filtered (_("Ending remote debugging.\n")); | |
4125 | } | |
2d717e4f | 4126 | } |
82f73884 | 4127 | |
74531fed | 4128 | discard_pending_stop_replies (pid); |
82f73884 | 4129 | target_mourn_inferior (); |
2d717e4f DJ |
4130 | } |
4131 | ||
4132 | static void | |
136d6dae | 4133 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4134 | { |
4135 | remote_detach_1 (args, from_tty, 0); | |
4136 | } | |
4137 | ||
4138 | static void | |
136d6dae | 4139 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
4140 | { |
4141 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
4142 | } |
4143 | ||
6ad8ae5c DJ |
4144 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
4145 | ||
43ff13b4 | 4146 | static void |
597320e7 | 4147 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 4148 | { |
43ff13b4 | 4149 | if (args) |
2d717e4f | 4150 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 4151 | |
2d717e4f DJ |
4152 | /* Make sure we unpush even the extended remote targets; mourn |
4153 | won't do it. So call remote_mourn_1 directly instead of | |
4154 | target_mourn_inferior. */ | |
4155 | remote_mourn_1 (target); | |
4156 | ||
43ff13b4 JM |
4157 | if (from_tty) |
4158 | puts_filtered ("Ending remote debugging.\n"); | |
4159 | } | |
4160 | ||
2d717e4f DJ |
4161 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
4162 | be chatty about it. */ | |
4163 | ||
4164 | static void | |
4165 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
4166 | { | |
4167 | struct remote_state *rs = get_remote_state (); | |
be86555c | 4168 | int pid; |
96ef3384 | 4169 | char *wait_status = NULL; |
2d717e4f | 4170 | |
74164c56 | 4171 | pid = parse_pid_to_attach (args); |
2d717e4f | 4172 | |
74164c56 JK |
4173 | /* Remote PID can be freely equal to getpid, do not check it here the same |
4174 | way as in other targets. */ | |
2d717e4f DJ |
4175 | |
4176 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4177 | error (_("This target does not support attaching to a process")); | |
4178 | ||
4179 | sprintf (rs->buf, "vAttach;%x", pid); | |
4180 | putpkt (rs->buf); | |
4181 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4182 | ||
3e43a32a MS |
4183 | if (packet_ok (rs->buf, |
4184 | &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2d717e4f DJ |
4185 | { |
4186 | if (from_tty) | |
4187 | printf_unfiltered (_("Attached to %s\n"), | |
4188 | target_pid_to_str (pid_to_ptid (pid))); | |
4189 | ||
74531fed PA |
4190 | if (!non_stop) |
4191 | { | |
4192 | /* Save the reply for later. */ | |
4193 | wait_status = alloca (strlen (rs->buf) + 1); | |
4194 | strcpy (wait_status, rs->buf); | |
4195 | } | |
4196 | else if (strcmp (rs->buf, "OK") != 0) | |
4197 | error (_("Attaching to %s failed with: %s"), | |
4198 | target_pid_to_str (pid_to_ptid (pid)), | |
4199 | rs->buf); | |
2d717e4f DJ |
4200 | } |
4201 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
4202 | error (_("This target does not support attaching to a process")); | |
4203 | else | |
4204 | error (_("Attaching to %s failed"), | |
4205 | target_pid_to_str (pid_to_ptid (pid))); | |
4206 | ||
6c95b8df | 4207 | set_current_inferior (remote_add_inferior (pid, 1)); |
bad34192 | 4208 | |
2d717e4f | 4209 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 4210 | |
bad34192 PA |
4211 | if (non_stop) |
4212 | { | |
4213 | struct thread_info *thread; | |
79d7f229 | 4214 | |
bad34192 PA |
4215 | /* Get list of threads. */ |
4216 | remote_threads_info (target); | |
82f73884 | 4217 | |
bad34192 PA |
4218 | thread = first_thread_of_process (pid); |
4219 | if (thread) | |
4220 | inferior_ptid = thread->ptid; | |
4221 | else | |
4222 | inferior_ptid = pid_to_ptid (pid); | |
4223 | ||
4224 | /* Invalidate our notion of the remote current thread. */ | |
4225 | record_currthread (minus_one_ptid); | |
4226 | } | |
74531fed | 4227 | else |
bad34192 PA |
4228 | { |
4229 | /* Now, if we have thread information, update inferior_ptid. */ | |
4230 | inferior_ptid = remote_current_thread (inferior_ptid); | |
4231 | ||
4232 | /* Add the main thread to the thread list. */ | |
4233 | add_thread_silent (inferior_ptid); | |
4234 | } | |
c0a2216e | 4235 | |
96ef3384 UW |
4236 | /* Next, if the target can specify a description, read it. We do |
4237 | this before anything involving memory or registers. */ | |
4238 | target_find_description (); | |
4239 | ||
74531fed PA |
4240 | if (!non_stop) |
4241 | { | |
4242 | /* Use the previously fetched status. */ | |
4243 | gdb_assert (wait_status != NULL); | |
4244 | ||
4245 | if (target_can_async_p ()) | |
4246 | { | |
4247 | struct stop_reply *stop_reply; | |
4248 | struct cleanup *old_chain; | |
4249 | ||
4250 | stop_reply = stop_reply_xmalloc (); | |
4251 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4252 | remote_parse_stop_reply (wait_status, stop_reply); | |
4253 | discard_cleanups (old_chain); | |
4254 | push_stop_reply (stop_reply); | |
4255 | ||
4256 | target_async (inferior_event_handler, 0); | |
4257 | } | |
4258 | else | |
4259 | { | |
4260 | gdb_assert (wait_status != NULL); | |
4261 | strcpy (rs->buf, wait_status); | |
4262 | rs->cached_wait_status = 1; | |
4263 | } | |
4264 | } | |
4265 | else | |
4266 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
4267 | } |
4268 | ||
4269 | static void | |
136d6dae | 4270 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 4271 | { |
136d6dae | 4272 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
4273 | } |
4274 | ||
c906108c SS |
4275 | /* Convert hex digit A to a number. */ |
4276 | ||
30559e10 | 4277 | static int |
fba45db2 | 4278 | fromhex (int a) |
c906108c SS |
4279 | { |
4280 | if (a >= '0' && a <= '9') | |
4281 | return a - '0'; | |
4282 | else if (a >= 'a' && a <= 'f') | |
4283 | return a - 'a' + 10; | |
4284 | else if (a >= 'A' && a <= 'F') | |
4285 | return a - 'A' + 10; | |
c5aa993b | 4286 | else |
8a3fe4f8 | 4287 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
4288 | } |
4289 | ||
00bf0b85 | 4290 | int |
cfd77fa1 | 4291 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
4292 | { |
4293 | int i; | |
4294 | ||
30559e10 MS |
4295 | for (i = 0; i < count; i++) |
4296 | { | |
4297 | if (hex[0] == 0 || hex[1] == 0) | |
4298 | { | |
4299 | /* Hex string is short, or of uneven length. | |
23860348 | 4300 | Return the count that has been converted so far. */ |
30559e10 MS |
4301 | return i; |
4302 | } | |
4303 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
4304 | hex += 2; | |
4305 | } | |
4306 | return i; | |
4307 | } | |
4308 | ||
c906108c SS |
4309 | /* Convert number NIB to a hex digit. */ |
4310 | ||
4311 | static int | |
fba45db2 | 4312 | tohex (int nib) |
c906108c SS |
4313 | { |
4314 | if (nib < 10) | |
c5aa993b | 4315 | return '0' + nib; |
c906108c | 4316 | else |
c5aa993b | 4317 | return 'a' + nib - 10; |
c906108c | 4318 | } |
30559e10 | 4319 | |
00bf0b85 | 4320 | int |
cfd77fa1 | 4321 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
4322 | { |
4323 | int i; | |
a744cf53 | 4324 | |
23860348 | 4325 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 4326 | if (count == 0) |
cfd77fa1 | 4327 | count = strlen ((char *) bin); |
30559e10 MS |
4328 | |
4329 | for (i = 0; i < count; i++) | |
4330 | { | |
4331 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
4332 | *hex++ = tohex (*bin++ & 0xf); | |
4333 | } | |
4334 | *hex = 0; | |
4335 | return i; | |
4336 | } | |
c906108c | 4337 | \f |
506fb367 DJ |
4338 | /* Check for the availability of vCont. This function should also check |
4339 | the response. */ | |
c906108c SS |
4340 | |
4341 | static void | |
6d820c5c | 4342 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 4343 | { |
2e9f7625 | 4344 | char *buf; |
6d820c5c | 4345 | |
2e9f7625 DJ |
4346 | strcpy (rs->buf, "vCont?"); |
4347 | putpkt (rs->buf); | |
6d820c5c | 4348 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 4349 | buf = rs->buf; |
c906108c | 4350 | |
506fb367 DJ |
4351 | /* Make sure that the features we assume are supported. */ |
4352 | if (strncmp (buf, "vCont", 5) == 0) | |
4353 | { | |
4354 | char *p = &buf[5]; | |
4355 | int support_s, support_S, support_c, support_C; | |
4356 | ||
4357 | support_s = 0; | |
4358 | support_S = 0; | |
4359 | support_c = 0; | |
4360 | support_C = 0; | |
74531fed | 4361 | rs->support_vCont_t = 0; |
506fb367 DJ |
4362 | while (p && *p == ';') |
4363 | { | |
4364 | p++; | |
4365 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4366 | support_s = 1; | |
4367 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4368 | support_S = 1; | |
4369 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4370 | support_c = 1; | |
4371 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
4372 | support_C = 1; | |
74531fed PA |
4373 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
4374 | rs->support_vCont_t = 1; | |
506fb367 DJ |
4375 | |
4376 | p = strchr (p, ';'); | |
4377 | } | |
c906108c | 4378 | |
506fb367 DJ |
4379 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
4380 | BUF will make packet_ok disable the packet. */ | |
4381 | if (!support_s || !support_S || !support_c || !support_C) | |
4382 | buf[0] = 0; | |
4383 | } | |
c906108c | 4384 | |
444abaca | 4385 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 4386 | } |
c906108c | 4387 | |
0d8f58ca PA |
4388 | /* Helper function for building "vCont" resumptions. Write a |
4389 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
4390 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
4391 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
4392 | resumed thread should be single-stepped and/or signalled. If PTID | |
4393 | equals minus_one_ptid, then all threads are resumed; if PTID | |
4394 | represents a process, then all threads of the process are resumed; | |
4395 | the thread to be stepped and/or signalled is given in the global | |
4396 | INFERIOR_PTID. */ | |
4397 | ||
4398 | static char * | |
4399 | append_resumption (char *p, char *endp, | |
4400 | ptid_t ptid, int step, enum target_signal siggnal) | |
4401 | { | |
4402 | struct remote_state *rs = get_remote_state (); | |
4403 | ||
4404 | if (step && siggnal != TARGET_SIGNAL_0) | |
4405 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
4406 | else if (step) | |
4407 | p += xsnprintf (p, endp - p, ";s"); | |
4408 | else if (siggnal != TARGET_SIGNAL_0) | |
4409 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
4410 | else | |
4411 | p += xsnprintf (p, endp - p, ";c"); | |
4412 | ||
4413 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
4414 | { | |
4415 | ptid_t nptid; | |
4416 | ||
4417 | /* All (-1) threads of process. */ | |
4418 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4419 | ||
4420 | p += xsnprintf (p, endp - p, ":"); | |
4421 | p = write_ptid (p, endp, nptid); | |
4422 | } | |
4423 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
4424 | { | |
4425 | p += xsnprintf (p, endp - p, ":"); | |
4426 | p = write_ptid (p, endp, ptid); | |
4427 | } | |
4428 | ||
4429 | return p; | |
4430 | } | |
4431 | ||
506fb367 DJ |
4432 | /* Resume the remote inferior by using a "vCont" packet. The thread |
4433 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
4434 | resumed thread should be single-stepped and/or signalled. If PTID |
4435 | equals minus_one_ptid, then all threads are resumed; the thread to | |
4436 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
4437 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 4438 | |
506fb367 DJ |
4439 | This function issues a strict subset of all possible vCont commands at the |
4440 | moment. */ | |
44eaed12 | 4441 | |
506fb367 DJ |
4442 | static int |
4443 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
4444 | { | |
4445 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
4446 | char *p; |
4447 | char *endp; | |
44eaed12 | 4448 | |
444abaca | 4449 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 4450 | remote_vcont_probe (rs); |
44eaed12 | 4451 | |
444abaca | 4452 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 4453 | return 0; |
44eaed12 | 4454 | |
82f73884 PA |
4455 | p = rs->buf; |
4456 | endp = rs->buf + get_remote_packet_size (); | |
4457 | ||
506fb367 DJ |
4458 | /* If we could generate a wider range of packets, we'd have to worry |
4459 | about overflowing BUF. Should there be a generic | |
4460 | "multi-part-packet" packet? */ | |
4461 | ||
0d8f58ca PA |
4462 | p += xsnprintf (p, endp - p, "vCont"); |
4463 | ||
79d7f229 | 4464 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 4465 | { |
79d7f229 PA |
4466 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
4467 | so we don't have any TID numbers the inferior will | |
4468 | understand. Make sure to only send forms that do not specify | |
4469 | a TID. */ | |
0d8f58ca | 4470 | p = append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 4471 | } |
0d8f58ca | 4472 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 4473 | { |
0d8f58ca PA |
4474 | /* Resume all threads (of all processes, or of a single |
4475 | process), with preference for INFERIOR_PTID. This assumes | |
4476 | inferior_ptid belongs to the set of all threads we are about | |
4477 | to resume. */ | |
4478 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 4479 | { |
0d8f58ca PA |
4480 | /* Step inferior_ptid, with or without signal. */ |
4481 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 4482 | } |
0d8f58ca PA |
4483 | |
4484 | /* And continue others without a signal. */ | |
4485 | p = append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); | |
c906108c SS |
4486 | } |
4487 | else | |
506fb367 DJ |
4488 | { |
4489 | /* Scheduler locking; resume only PTID. */ | |
0d8f58ca | 4490 | p = append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 4491 | } |
c906108c | 4492 | |
82f73884 PA |
4493 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
4494 | putpkt (rs->buf); | |
506fb367 | 4495 | |
74531fed PA |
4496 | if (non_stop) |
4497 | { | |
4498 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
4499 | reply will be reported asynchronously by means of a `%Stop' | |
4500 | notification. */ | |
4501 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4502 | if (strcmp (rs->buf, "OK") != 0) | |
4503 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
4504 | } | |
4505 | ||
506fb367 | 4506 | return 1; |
c906108c | 4507 | } |
43ff13b4 | 4508 | |
506fb367 DJ |
4509 | /* Tell the remote machine to resume. */ |
4510 | ||
4511 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
4512 | ||
4513 | static int last_sent_step; | |
4514 | ||
43ff13b4 | 4515 | static void |
28439f5e PA |
4516 | remote_resume (struct target_ops *ops, |
4517 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 4518 | { |
d01949b6 | 4519 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4520 | char *buf; |
43ff13b4 | 4521 | |
43ff13b4 JM |
4522 | last_sent_signal = siggnal; |
4523 | last_sent_step = step; | |
4524 | ||
89be2091 DJ |
4525 | /* Update the inferior on signals to silently pass, if they've changed. */ |
4526 | remote_pass_signals (); | |
4527 | ||
506fb367 | 4528 | /* The vCont packet doesn't need to specify threads via Hc. */ |
40ab02ce MS |
4529 | /* No reverse support (yet) for vCont. */ |
4530 | if (execution_direction != EXEC_REVERSE) | |
4531 | if (remote_vcont_resume (ptid, step, siggnal)) | |
4532 | goto done; | |
506fb367 | 4533 | |
79d7f229 PA |
4534 | /* All other supported resume packets do use Hc, so set the continue |
4535 | thread. */ | |
4536 | if (ptid_equal (ptid, minus_one_ptid)) | |
4537 | set_continue_thread (any_thread_ptid); | |
506fb367 | 4538 | else |
79d7f229 | 4539 | set_continue_thread (ptid); |
506fb367 | 4540 | |
2e9f7625 | 4541 | buf = rs->buf; |
b2175913 MS |
4542 | if (execution_direction == EXEC_REVERSE) |
4543 | { | |
4544 | /* We don't pass signals to the target in reverse exec mode. */ | |
4545 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
4546 | warning (" - Can't pass signal %d to target in reverse: ignored.\n", | |
4547 | siggnal); | |
40ab02ce MS |
4548 | |
4549 | if (step | |
4550 | && remote_protocol_packets[PACKET_bs].support == PACKET_DISABLE) | |
4551 | error (_("Remote reverse-step not supported.")); | |
4552 | if (!step | |
4553 | && remote_protocol_packets[PACKET_bc].support == PACKET_DISABLE) | |
08c93ed9 | 4554 | error (_("Remote reverse-continue not supported.")); |
40ab02ce | 4555 | |
b2175913 MS |
4556 | strcpy (buf, step ? "bs" : "bc"); |
4557 | } | |
4558 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
4559 | { |
4560 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 4561 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 4562 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
4563 | buf[3] = '\0'; |
4564 | } | |
4565 | else | |
c5aa993b | 4566 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 4567 | |
44eaed12 | 4568 | putpkt (buf); |
43ff13b4 | 4569 | |
75c99385 | 4570 | done: |
2acceee2 JM |
4571 | /* We are about to start executing the inferior, let's register it |
4572 | with the event loop. NOTE: this is the one place where all the | |
4573 | execution commands end up. We could alternatively do this in each | |
23860348 | 4574 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
4575 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
4576 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 4577 | NOT asynchronously. */ |
362646f5 | 4578 | if (target_can_async_p ()) |
2acceee2 | 4579 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
4580 | |
4581 | /* We've just told the target to resume. The remote server will | |
4582 | wait for the inferior to stop, and then send a stop reply. In | |
4583 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
4584 | because the stub wouldn't be ready to process it. This applies |
4585 | only to the base all-stop protocol, however. In non-stop (which | |
4586 | only supports vCont), the stub replies with an "OK", and is | |
4587 | immediate able to process further serial input. */ | |
4588 | if (!non_stop) | |
4589 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 4590 | } |
c906108c | 4591 | \f |
43ff13b4 JM |
4592 | |
4593 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 4594 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 4595 | static void |
fba45db2 | 4596 | initialize_sigint_signal_handler (void) |
43ff13b4 | 4597 | { |
43ff13b4 JM |
4598 | signal (SIGINT, handle_remote_sigint); |
4599 | } | |
4600 | ||
23860348 | 4601 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 4602 | static void |
fba45db2 | 4603 | handle_remote_sigint (int sig) |
43ff13b4 JM |
4604 | { |
4605 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
4606 | mark_async_signal_handler_wrapper (sigint_remote_token); |
4607 | } | |
4608 | ||
4609 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
4610 | sent once. It will take effect the second time that the user sends | |
23860348 | 4611 | a ^C. */ |
43ff13b4 | 4612 | static void |
fba45db2 | 4613 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 4614 | { |
b803fb0f | 4615 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
4616 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
4617 | } | |
4618 | ||
6426a772 | 4619 | /* Perform the real interruption of the target execution, in response |
23860348 | 4620 | to a ^C. */ |
c5aa993b | 4621 | static void |
fba45db2 | 4622 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
4623 | { |
4624 | if (remote_debug) | |
4625 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
4626 | ||
94cc34af | 4627 | target_stop (inferior_ptid); |
43ff13b4 JM |
4628 | } |
4629 | ||
4630 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 4631 | up on the target alltogether. */ |
2df3850c | 4632 | void |
fba45db2 | 4633 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 4634 | { |
2df3850c JM |
4635 | if (remote_debug) |
4636 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
4637 | |
4638 | interrupt_query (); | |
43ff13b4 JM |
4639 | } |
4640 | ||
4641 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 4642 | stopped. */ |
6426a772 JM |
4643 | static void |
4644 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
4645 | { |
4646 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
4647 | } |
4648 | ||
c906108c SS |
4649 | /* Send ^C to target to halt it. Target will respond, and send us a |
4650 | packet. */ | |
507f3c78 | 4651 | static void (*ofunc) (int); |
c906108c | 4652 | |
7a292a7a SS |
4653 | /* The command line interface's stop routine. This function is installed |
4654 | as a signal handler for SIGINT. The first time a user requests a | |
4655 | stop, we call remote_stop to send a break or ^C. If there is no | |
4656 | response from the target (it didn't stop when the user requested it), | |
23860348 | 4657 | we ask the user if he'd like to detach from the target. */ |
c906108c | 4658 | static void |
fba45db2 | 4659 | remote_interrupt (int signo) |
c906108c | 4660 | { |
23860348 | 4661 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
4662 | signal (signo, remote_interrupt_twice); |
4663 | ||
b803fb0f | 4664 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
4665 | } |
4666 | ||
4667 | /* The user typed ^C twice. */ | |
4668 | ||
4669 | static void | |
fba45db2 | 4670 | remote_interrupt_twice (int signo) |
7a292a7a SS |
4671 | { |
4672 | signal (signo, ofunc); | |
b803fb0f | 4673 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
4674 | signal (signo, remote_interrupt); |
4675 | } | |
7a292a7a | 4676 | |
74531fed PA |
4677 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
4678 | thread, all threads of a remote process, or all threads of all | |
4679 | processes. */ | |
4680 | ||
4681 | static void | |
4682 | remote_stop_ns (ptid_t ptid) | |
4683 | { | |
4684 | struct remote_state *rs = get_remote_state (); | |
4685 | char *p = rs->buf; | |
4686 | char *endp = rs->buf + get_remote_packet_size (); | |
74531fed PA |
4687 | |
4688 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
4689 | remote_vcont_probe (rs); | |
4690 | ||
4691 | if (!rs->support_vCont_t) | |
4692 | error (_("Remote server does not support stopping threads")); | |
4693 | ||
f91d3df5 PA |
4694 | if (ptid_equal (ptid, minus_one_ptid) |
4695 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
4696 | p += xsnprintf (p, endp - p, "vCont;t"); |
4697 | else | |
4698 | { | |
4699 | ptid_t nptid; | |
4700 | ||
74531fed PA |
4701 | p += xsnprintf (p, endp - p, "vCont;t:"); |
4702 | ||
4703 | if (ptid_is_pid (ptid)) | |
4704 | /* All (-1) threads of process. */ | |
4705 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
4706 | else | |
4707 | { | |
4708 | /* Small optimization: if we already have a stop reply for | |
4709 | this thread, no use in telling the stub we want this | |
4710 | stopped. */ | |
4711 | if (peek_stop_reply (ptid)) | |
4712 | return; | |
4713 | ||
4714 | nptid = ptid; | |
4715 | } | |
4716 | ||
4717 | p = write_ptid (p, endp, nptid); | |
4718 | } | |
4719 | ||
4720 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
4721 | come in asynchronously by notification. */ | |
4722 | putpkt (rs->buf); | |
4723 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4724 | if (strcmp (rs->buf, "OK") != 0) | |
4725 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
4726 | } | |
4727 | ||
4728 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4729 | remote target. It is undefined which thread of which process | |
4730 | reports the stop. */ | |
4731 | ||
4732 | static void | |
4733 | remote_stop_as (ptid_t ptid) | |
4734 | { | |
4735 | struct remote_state *rs = get_remote_state (); | |
4736 | ||
3a29589a DJ |
4737 | rs->ctrlc_pending_p = 1; |
4738 | ||
74531fed PA |
4739 | /* If the inferior is stopped already, but the core didn't know |
4740 | about it yet, just ignore the request. The cached wait status | |
4741 | will be collected in remote_wait. */ | |
4742 | if (rs->cached_wait_status) | |
4743 | return; | |
4744 | ||
9a7071a8 JB |
4745 | /* Send interrupt_sequence to remote target. */ |
4746 | send_interrupt_sequence (); | |
74531fed PA |
4747 | } |
4748 | ||
7a292a7a SS |
4749 | /* This is the generic stop called via the target vector. When a target |
4750 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 4751 | will eventually end up here. */ |
74531fed | 4752 | |
c906108c | 4753 | static void |
94cc34af | 4754 | remote_stop (ptid_t ptid) |
c906108c | 4755 | { |
7a292a7a | 4756 | if (remote_debug) |
0f71a2f6 | 4757 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4758 | |
74531fed PA |
4759 | if (non_stop) |
4760 | remote_stop_ns (ptid); | |
c906108c | 4761 | else |
74531fed | 4762 | remote_stop_as (ptid); |
c906108c SS |
4763 | } |
4764 | ||
4765 | /* Ask the user what to do when an interrupt is received. */ | |
4766 | ||
4767 | static void | |
fba45db2 | 4768 | interrupt_query (void) |
c906108c SS |
4769 | { |
4770 | target_terminal_ours (); | |
4771 | ||
74531fed | 4772 | if (target_can_async_p ()) |
c906108c | 4773 | { |
74531fed | 4774 | signal (SIGINT, handle_sigint); |
315a522e | 4775 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4776 | } |
74531fed PA |
4777 | else |
4778 | { | |
9e2f0ad4 HZ |
4779 | if (query (_("Interrupted while waiting for the program.\n\ |
4780 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4781 | { |
4782 | pop_target (); | |
4783 | deprecated_throw_reason (RETURN_QUIT); | |
4784 | } | |
4785 | } | |
c906108c SS |
4786 | |
4787 | target_terminal_inferior (); | |
4788 | } | |
4789 | ||
6426a772 JM |
4790 | /* Enable/disable target terminal ownership. Most targets can use |
4791 | terminal groups to control terminal ownership. Remote targets are | |
4792 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4793 | is required. */ |
6426a772 JM |
4794 | |
4795 | static void | |
75c99385 | 4796 | remote_terminal_inferior (void) |
6426a772 | 4797 | { |
c6ebd6cf | 4798 | if (!target_async_permitted) |
75c99385 PA |
4799 | /* Nothing to do. */ |
4800 | return; | |
4801 | ||
d9d2d8b6 PA |
4802 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4803 | idempotent. The event-loop GDB talking to an asynchronous target | |
4804 | with a synchronous command calls this function from both | |
4805 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4806 | transfer the terminal to the target when it shouldn't this guard | |
4807 | can go away. */ | |
6426a772 JM |
4808 | if (!remote_async_terminal_ours_p) |
4809 | return; | |
4810 | delete_file_handler (input_fd); | |
4811 | remote_async_terminal_ours_p = 0; | |
4812 | initialize_sigint_signal_handler (); | |
4813 | /* NOTE: At this point we could also register our selves as the | |
4814 | recipient of all input. Any characters typed could then be | |
23860348 | 4815 | passed on down to the target. */ |
6426a772 JM |
4816 | } |
4817 | ||
4818 | static void | |
75c99385 | 4819 | remote_terminal_ours (void) |
6426a772 | 4820 | { |
c6ebd6cf | 4821 | if (!target_async_permitted) |
75c99385 PA |
4822 | /* Nothing to do. */ |
4823 | return; | |
4824 | ||
4825 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4826 | if (remote_async_terminal_ours_p) |
4827 | return; | |
4828 | cleanup_sigint_signal_handler (NULL); | |
4829 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4830 | remote_async_terminal_ours_p = 1; | |
4831 | } | |
4832 | ||
176a6961 | 4833 | static void |
917317f4 | 4834 | remote_console_output (char *msg) |
c906108c SS |
4835 | { |
4836 | char *p; | |
4837 | ||
c5aa993b | 4838 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4839 | { |
4840 | char tb[2]; | |
4841 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 4842 | |
c906108c SS |
4843 | tb[0] = c; |
4844 | tb[1] = 0; | |
43ff13b4 | 4845 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4846 | } |
74531fed PA |
4847 | gdb_flush (gdb_stdtarg); |
4848 | } | |
4849 | ||
4850 | typedef struct cached_reg | |
4851 | { | |
4852 | int num; | |
4853 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4854 | } cached_reg_t; | |
4855 | ||
4856 | DEF_VEC_O(cached_reg_t); | |
4857 | ||
4858 | struct stop_reply | |
4859 | { | |
4860 | struct stop_reply *next; | |
4861 | ||
4862 | ptid_t ptid; | |
4863 | ||
4864 | struct target_waitstatus ws; | |
4865 | ||
4866 | VEC(cached_reg_t) *regcache; | |
4867 | ||
4868 | int stopped_by_watchpoint_p; | |
4869 | CORE_ADDR watch_data_address; | |
4870 | ||
4871 | int solibs_changed; | |
4872 | int replay_event; | |
dc146f7c VP |
4873 | |
4874 | int core; | |
74531fed PA |
4875 | }; |
4876 | ||
4877 | /* The list of already fetched and acknowledged stop events. */ | |
4878 | static struct stop_reply *stop_reply_queue; | |
4879 | ||
4880 | static struct stop_reply * | |
4881 | stop_reply_xmalloc (void) | |
4882 | { | |
4883 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
a744cf53 | 4884 | |
74531fed PA |
4885 | r->next = NULL; |
4886 | return r; | |
4887 | } | |
4888 | ||
4889 | static void | |
4890 | stop_reply_xfree (struct stop_reply *r) | |
4891 | { | |
4892 | if (r != NULL) | |
4893 | { | |
4894 | VEC_free (cached_reg_t, r->regcache); | |
4895 | xfree (r); | |
4896 | } | |
c906108c SS |
4897 | } |
4898 | ||
74531fed PA |
4899 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
4900 | discard everything. */ | |
c906108c | 4901 | |
74531fed PA |
4902 | static void |
4903 | discard_pending_stop_replies (int pid) | |
c906108c | 4904 | { |
74531fed | 4905 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 4906 | |
74531fed PA |
4907 | /* Discard the in-flight notification. */ |
4908 | if (pending_stop_reply != NULL | |
4909 | && (pid == -1 | |
4910 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
4911 | { | |
4912 | stop_reply_xfree (pending_stop_reply); | |
4913 | pending_stop_reply = NULL; | |
4914 | } | |
c906108c | 4915 | |
74531fed PA |
4916 | /* Discard the stop replies we have already pulled with |
4917 | vStopped. */ | |
4918 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 4919 | { |
74531fed PA |
4920 | next = reply->next; |
4921 | if (pid == -1 | |
4922 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 4923 | { |
74531fed PA |
4924 | if (reply == stop_reply_queue) |
4925 | stop_reply_queue = reply->next; | |
4926 | else | |
4927 | prev->next = reply->next; | |
4928 | ||
4929 | stop_reply_xfree (reply); | |
9fa2223d | 4930 | } |
74531fed PA |
4931 | else |
4932 | prev = reply; | |
c8e38a49 | 4933 | } |
74531fed | 4934 | } |
43ff13b4 | 4935 | |
74531fed | 4936 | /* Cleanup wrapper. */ |
2e9f7625 | 4937 | |
74531fed PA |
4938 | static void |
4939 | do_stop_reply_xfree (void *arg) | |
4940 | { | |
4941 | struct stop_reply *r = arg; | |
a744cf53 | 4942 | |
74531fed PA |
4943 | stop_reply_xfree (r); |
4944 | } | |
75c99385 | 4945 | |
74531fed PA |
4946 | /* Look for a queued stop reply belonging to PTID. If one is found, |
4947 | remove it from the queue, and return it. Returns NULL if none is | |
4948 | found. If there are still queued events left to process, tell the | |
4949 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 4950 | |
74531fed PA |
4951 | static struct stop_reply * |
4952 | queued_stop_reply (ptid_t ptid) | |
4953 | { | |
0723dbf5 PA |
4954 | struct stop_reply *it; |
4955 | struct stop_reply **it_link; | |
74531fed | 4956 | |
0723dbf5 PA |
4957 | it = stop_reply_queue; |
4958 | it_link = &stop_reply_queue; | |
4959 | while (it) | |
c8e38a49 | 4960 | { |
0723dbf5 PA |
4961 | if (ptid_match (it->ptid, ptid)) |
4962 | { | |
4963 | *it_link = it->next; | |
4964 | it->next = NULL; | |
4965 | break; | |
4966 | } | |
e24a49d8 | 4967 | |
0723dbf5 PA |
4968 | it_link = &it->next; |
4969 | it = *it_link; | |
4970 | } | |
74531fed PA |
4971 | |
4972 | if (stop_reply_queue) | |
4973 | /* There's still at least an event left. */ | |
4974 | mark_async_event_handler (remote_async_inferior_event_token); | |
4975 | ||
4976 | return it; | |
4977 | } | |
4978 | ||
4979 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
4980 | know that we now have at least one queued event left to pass to the | |
4981 | core side, tell the event loop to get back to target_wait soon. */ | |
4982 | ||
4983 | static void | |
4984 | push_stop_reply (struct stop_reply *new_event) | |
4985 | { | |
4986 | struct stop_reply *event; | |
4987 | ||
4988 | if (stop_reply_queue) | |
4989 | { | |
4990 | for (event = stop_reply_queue; | |
4991 | event && event->next; | |
4992 | event = event->next) | |
4993 | ; | |
4994 | ||
4995 | event->next = new_event; | |
4996 | } | |
4997 | else | |
4998 | stop_reply_queue = new_event; | |
4999 | ||
5000 | mark_async_event_handler (remote_async_inferior_event_token); | |
5001 | } | |
5002 | ||
5003 | /* Returns true if we have a stop reply for PTID. */ | |
5004 | ||
5005 | static int | |
5006 | peek_stop_reply (ptid_t ptid) | |
5007 | { | |
5008 | struct stop_reply *it; | |
5009 | ||
5010 | for (it = stop_reply_queue; it; it = it->next) | |
5011 | if (ptid_equal (ptid, it->ptid)) | |
5012 | { | |
5013 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
5014 | return 1; | |
5015 | } | |
5016 | ||
5017 | return 0; | |
5018 | } | |
5019 | ||
5020 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
5021 | result is stored in EVENT, or throws an error. */ | |
5022 | ||
5023 | static void | |
5024 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
5025 | { | |
5026 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5027 | ULONGEST addr; | |
5028 | char *p; | |
5029 | ||
5030 | event->ptid = null_ptid; | |
5031 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
5032 | event->ws.value.integer = 0; | |
5033 | event->solibs_changed = 0; | |
5034 | event->replay_event = 0; | |
5035 | event->stopped_by_watchpoint_p = 0; | |
5036 | event->regcache = NULL; | |
dc146f7c | 5037 | event->core = -1; |
74531fed PA |
5038 | |
5039 | switch (buf[0]) | |
5040 | { | |
5041 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
5042 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
5043 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
5044 | ss = signal number | |
5045 | n... = register number | |
5046 | r... = register contents | |
5047 | */ | |
5048 | ||
5049 | p = &buf[3]; /* after Txx */ | |
5050 | while (*p) | |
5051 | { | |
5052 | char *p1; | |
5053 | char *p_temp; | |
5054 | int fieldsize; | |
5055 | LONGEST pnum = 0; | |
43ff13b4 | 5056 | |
cea39f65 MS |
5057 | /* If the packet contains a register number, save it in |
5058 | pnum and set p1 to point to the character following it. | |
5059 | Otherwise p1 points to p. */ | |
3c3bea1c | 5060 | |
cea39f65 MS |
5061 | /* If this packet is an awatch packet, don't parse the 'a' |
5062 | as a register number. */ | |
c8e38a49 | 5063 | |
dc146f7c VP |
5064 | if (strncmp (p, "awatch", strlen("awatch")) != 0 |
5065 | && strncmp (p, "core", strlen ("core") != 0)) | |
cea39f65 MS |
5066 | { |
5067 | /* Read the ``P'' register number. */ | |
5068 | pnum = strtol (p, &p_temp, 16); | |
5069 | p1 = p_temp; | |
5070 | } | |
5071 | else | |
5072 | p1 = p; | |
802188a7 | 5073 | |
cea39f65 MS |
5074 | if (p1 == p) /* No register number present here. */ |
5075 | { | |
5076 | p1 = strchr (p, ':'); | |
5077 | if (p1 == NULL) | |
5078 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
c8e38a49 | 5079 | Packet: '%s'\n"), |
cea39f65 MS |
5080 | p, buf); |
5081 | if (strncmp (p, "thread", p1 - p) == 0) | |
5082 | event->ptid = read_ptid (++p1, &p); | |
5083 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
5084 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
5085 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
5086 | { | |
5087 | event->stopped_by_watchpoint_p = 1; | |
5088 | p = unpack_varlen_hex (++p1, &addr); | |
5089 | event->watch_data_address = (CORE_ADDR) addr; | |
5090 | } | |
5091 | else if (strncmp (p, "library", p1 - p) == 0) | |
5092 | { | |
5093 | p1++; | |
5094 | p_temp = p1; | |
5095 | while (*p_temp && *p_temp != ';') | |
5096 | p_temp++; | |
c8e38a49 | 5097 | |
cea39f65 MS |
5098 | event->solibs_changed = 1; |
5099 | p = p_temp; | |
5100 | } | |
5101 | else if (strncmp (p, "replaylog", p1 - p) == 0) | |
5102 | { | |
5103 | /* NO_HISTORY event. | |
5104 | p1 will indicate "begin" or "end", but | |
5105 | it makes no difference for now, so ignore it. */ | |
5106 | event->replay_event = 1; | |
5107 | p_temp = strchr (p1 + 1, ';'); | |
5108 | if (p_temp) | |
c8e38a49 | 5109 | p = p_temp; |
cea39f65 | 5110 | } |
dc146f7c VP |
5111 | else if (strncmp (p, "core", p1 - p) == 0) |
5112 | { | |
5113 | ULONGEST c; | |
a744cf53 | 5114 | |
dc146f7c VP |
5115 | p = unpack_varlen_hex (++p1, &c); |
5116 | event->core = c; | |
5117 | } | |
cea39f65 MS |
5118 | else |
5119 | { | |
5120 | /* Silently skip unknown optional info. */ | |
5121 | p_temp = strchr (p1 + 1, ';'); | |
5122 | if (p_temp) | |
5123 | p = p_temp; | |
5124 | } | |
5125 | } | |
5126 | else | |
5127 | { | |
5128 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
5129 | cached_reg_t cached_reg; | |
74531fed | 5130 | |
cea39f65 | 5131 | p = p1; |
75c99385 | 5132 | |
cea39f65 MS |
5133 | if (*p != ':') |
5134 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 5135 | Packet: '%s'\n"), |
cea39f65 MS |
5136 | p, buf); |
5137 | ++p; | |
43ff13b4 | 5138 | |
cea39f65 MS |
5139 | if (reg == NULL) |
5140 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 5141 | Packet: '%s'\n"), |
7c47795c | 5142 | hex_string (pnum), p, buf); |
c8e38a49 | 5143 | |
cea39f65 | 5144 | cached_reg.num = reg->regnum; |
4100683b | 5145 | |
cea39f65 MS |
5146 | fieldsize = hex2bin (p, cached_reg.data, |
5147 | register_size (target_gdbarch, | |
5148 | reg->regnum)); | |
5149 | p += 2 * fieldsize; | |
5150 | if (fieldsize < register_size (target_gdbarch, | |
5151 | reg->regnum)) | |
5152 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed | 5153 | |
cea39f65 MS |
5154 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); |
5155 | } | |
c8e38a49 | 5156 | |
cea39f65 MS |
5157 | if (*p != ';') |
5158 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
5159 | buf, p); | |
5160 | ++p; | |
5161 | } | |
c8e38a49 PA |
5162 | /* fall through */ |
5163 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
5164 | if (event->solibs_changed) |
5165 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
5166 | else if (event->replay_event) | |
5167 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
5168 | else |
5169 | { | |
74531fed PA |
5170 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
5171 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
5172 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
5173 | } | |
5174 | break; | |
5175 | case 'W': /* Target exited. */ | |
5176 | case 'X': | |
5177 | { | |
5178 | char *p; | |
5179 | int pid; | |
5180 | ULONGEST value; | |
82f73884 | 5181 | |
c8e38a49 PA |
5182 | /* GDB used to accept only 2 hex chars here. Stubs should |
5183 | only send more if they detect GDB supports multi-process | |
5184 | support. */ | |
5185 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 5186 | |
c8e38a49 PA |
5187 | if (buf[0] == 'W') |
5188 | { | |
5189 | /* The remote process exited. */ | |
74531fed PA |
5190 | event->ws.kind = TARGET_WAITKIND_EXITED; |
5191 | event->ws.value.integer = value; | |
c8e38a49 PA |
5192 | } |
5193 | else | |
5194 | { | |
5195 | /* The remote process exited with a signal. */ | |
74531fed PA |
5196 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
5197 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 5198 | } |
82f73884 | 5199 | |
c8e38a49 PA |
5200 | /* If no process is specified, assume inferior_ptid. */ |
5201 | pid = ptid_get_pid (inferior_ptid); | |
5202 | if (*p == '\0') | |
5203 | ; | |
5204 | else if (*p == ';') | |
5205 | { | |
5206 | p++; | |
5207 | ||
5208 | if (p == '\0') | |
82f73884 | 5209 | ; |
c8e38a49 PA |
5210 | else if (strncmp (p, |
5211 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 5212 | { |
c8e38a49 | 5213 | ULONGEST upid; |
a744cf53 | 5214 | |
c8e38a49 PA |
5215 | p += sizeof ("process:") - 1; |
5216 | unpack_varlen_hex (p, &upid); | |
5217 | pid = upid; | |
82f73884 PA |
5218 | } |
5219 | else | |
5220 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 5221 | } |
c8e38a49 PA |
5222 | else |
5223 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
5224 | event->ptid = pid_to_ptid (pid); |
5225 | } | |
5226 | break; | |
5227 | } | |
5228 | ||
5229 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
5230 | error (_("No process or thread specified in stop reply: %s"), buf); | |
5231 | } | |
5232 | ||
5233 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
5234 | stop notification (%Stop). Those can come it at any time, hence, | |
5235 | we have to make sure that any pending putpkt/getpkt sequence we're | |
5236 | making is finished, before querying the stub for more events with | |
5237 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
5238 | upon receiving the %Stop notification, something like this could | |
5239 | happen: | |
5240 | ||
5241 | 1.1) --> Hg 1 | |
5242 | 1.2) <-- OK | |
5243 | 1.3) --> g | |
5244 | 1.4) <-- %Stop | |
5245 | 1.5) --> vStopped | |
5246 | 1.6) <-- (registers reply to step #1.3) | |
5247 | ||
5248 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
5249 | query. | |
5250 | ||
5251 | To solve this, whenever we parse a %Stop notification sucessfully, | |
5252 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
5253 | doing whatever we were doing: | |
5254 | ||
5255 | 2.1) --> Hg 1 | |
5256 | 2.2) <-- OK | |
5257 | 2.3) --> g | |
5258 | 2.4) <-- %Stop | |
5259 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
5260 | 2.5) <-- (registers reply to step #2.3) | |
5261 | ||
5262 | Eventualy after step #2.5, we return to the event loop, which | |
5263 | notices there's an event on the | |
5264 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
5265 | associated callback --- the function below. At this point, we're | |
5266 | always safe to start a vStopped sequence. : | |
5267 | ||
5268 | 2.6) --> vStopped | |
5269 | 2.7) <-- T05 thread:2 | |
5270 | 2.8) --> vStopped | |
5271 | 2.9) --> OK | |
5272 | */ | |
5273 | ||
5274 | static void | |
5275 | remote_get_pending_stop_replies (void) | |
5276 | { | |
5277 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5278 | |
5279 | if (pending_stop_reply) | |
5280 | { | |
5281 | /* acknowledge */ | |
5282 | putpkt ("vStopped"); | |
5283 | ||
5284 | /* Now we can rely on it. */ | |
5285 | push_stop_reply (pending_stop_reply); | |
5286 | pending_stop_reply = NULL; | |
5287 | ||
5288 | while (1) | |
5289 | { | |
5290 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5291 | if (strcmp (rs->buf, "OK") == 0) | |
5292 | break; | |
5293 | else | |
5294 | { | |
5295 | struct cleanup *old_chain; | |
5296 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
5297 | ||
5298 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5299 | remote_parse_stop_reply (rs->buf, stop_reply); | |
5300 | ||
5301 | /* acknowledge */ | |
5302 | putpkt ("vStopped"); | |
5303 | ||
5304 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
5305 | { | |
5306 | /* Now we can rely on it. */ | |
5307 | discard_cleanups (old_chain); | |
5308 | push_stop_reply (stop_reply); | |
5309 | } | |
5310 | else | |
5311 | /* We got an unknown stop reply. */ | |
5312 | do_cleanups (old_chain); | |
5313 | } | |
5314 | } | |
5315 | } | |
5316 | } | |
5317 | ||
5318 | ||
5319 | /* Called when it is decided that STOP_REPLY holds the info of the | |
5320 | event that is to be returned to the core. This function always | |
5321 | destroys STOP_REPLY. */ | |
5322 | ||
5323 | static ptid_t | |
5324 | process_stop_reply (struct stop_reply *stop_reply, | |
5325 | struct target_waitstatus *status) | |
5326 | { | |
5327 | ptid_t ptid; | |
5328 | ||
5329 | *status = stop_reply->ws; | |
5330 | ptid = stop_reply->ptid; | |
5331 | ||
5332 | /* If no thread/process was reported by the stub, assume the current | |
5333 | inferior. */ | |
5334 | if (ptid_equal (ptid, null_ptid)) | |
5335 | ptid = inferior_ptid; | |
5336 | ||
5f3563ea PA |
5337 | if (status->kind != TARGET_WAITKIND_EXITED |
5338 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 5339 | { |
5f3563ea PA |
5340 | /* Expedited registers. */ |
5341 | if (stop_reply->regcache) | |
5342 | { | |
217f1f79 UW |
5343 | struct regcache *regcache |
5344 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
5345 | cached_reg_t *reg; |
5346 | int ix; | |
5347 | ||
5348 | for (ix = 0; | |
5349 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
5350 | ix++) | |
217f1f79 | 5351 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
5352 | VEC_free (cached_reg_t, stop_reply->regcache); |
5353 | } | |
74531fed | 5354 | |
5f3563ea PA |
5355 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
5356 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
5357 | |
5358 | remote_notice_new_inferior (ptid, 0); | |
dc146f7c | 5359 | demand_private_info (ptid)->core = stop_reply->core; |
74531fed PA |
5360 | } |
5361 | ||
74531fed PA |
5362 | stop_reply_xfree (stop_reply); |
5363 | return ptid; | |
5364 | } | |
5365 | ||
5366 | /* The non-stop mode version of target_wait. */ | |
5367 | ||
5368 | static ptid_t | |
47608cb1 | 5369 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5370 | { |
5371 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
5372 | struct stop_reply *stop_reply; |
5373 | int ret; | |
5374 | ||
5375 | /* If in non-stop mode, get out of getpkt even if a | |
5376 | notification is received. */ | |
5377 | ||
5378 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
5379 | 0 /* forever */); | |
5380 | while (1) | |
5381 | { | |
5382 | if (ret != -1) | |
5383 | switch (rs->buf[0]) | |
5384 | { | |
5385 | case 'E': /* Error of some sort. */ | |
5386 | /* We're out of sync with the target now. Did it continue | |
5387 | or not? We can't tell which thread it was in non-stop, | |
5388 | so just ignore this. */ | |
5389 | warning (_("Remote failure reply: %s"), rs->buf); | |
5390 | break; | |
5391 | case 'O': /* Console output. */ | |
5392 | remote_console_output (rs->buf + 1); | |
5393 | break; | |
5394 | default: | |
5395 | warning (_("Invalid remote reply: %s"), rs->buf); | |
5396 | break; | |
5397 | } | |
5398 | ||
5399 | /* Acknowledge a pending stop reply that may have arrived in the | |
5400 | mean time. */ | |
5401 | if (pending_stop_reply != NULL) | |
5402 | remote_get_pending_stop_replies (); | |
5403 | ||
5404 | /* If indeed we noticed a stop reply, we're done. */ | |
5405 | stop_reply = queued_stop_reply (ptid); | |
5406 | if (stop_reply != NULL) | |
5407 | return process_stop_reply (stop_reply, status); | |
5408 | ||
47608cb1 | 5409 | /* Still no event. If we're just polling for an event, then |
74531fed | 5410 | return to the event loop. */ |
47608cb1 | 5411 | if (options & TARGET_WNOHANG) |
74531fed PA |
5412 | { |
5413 | status->kind = TARGET_WAITKIND_IGNORE; | |
5414 | return minus_one_ptid; | |
5415 | } | |
5416 | ||
47608cb1 | 5417 | /* Otherwise do a blocking wait. */ |
74531fed PA |
5418 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
5419 | 1 /* forever */); | |
5420 | } | |
5421 | } | |
5422 | ||
5423 | /* Wait until the remote machine stops, then return, storing status in | |
5424 | STATUS just as `wait' would. */ | |
5425 | ||
5426 | static ptid_t | |
47608cb1 | 5427 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
5428 | { |
5429 | struct remote_state *rs = get_remote_state (); | |
74531fed | 5430 | ptid_t event_ptid = null_ptid; |
cea39f65 | 5431 | char *buf; |
74531fed PA |
5432 | struct stop_reply *stop_reply; |
5433 | ||
47608cb1 PA |
5434 | again: |
5435 | ||
74531fed PA |
5436 | status->kind = TARGET_WAITKIND_IGNORE; |
5437 | status->value.integer = 0; | |
5438 | ||
5439 | stop_reply = queued_stop_reply (ptid); | |
5440 | if (stop_reply != NULL) | |
5441 | return process_stop_reply (stop_reply, status); | |
5442 | ||
5443 | if (rs->cached_wait_status) | |
5444 | /* Use the cached wait status, but only once. */ | |
5445 | rs->cached_wait_status = 0; | |
5446 | else | |
5447 | { | |
5448 | int ret; | |
5449 | ||
5450 | if (!target_is_async_p ()) | |
5451 | { | |
5452 | ofunc = signal (SIGINT, remote_interrupt); | |
5453 | /* If the user hit C-c before this packet, or between packets, | |
5454 | pretend that it was hit right here. */ | |
5455 | if (quit_flag) | |
5456 | { | |
5457 | quit_flag = 0; | |
5458 | remote_interrupt (SIGINT); | |
5459 | } | |
5460 | } | |
5461 | ||
5462 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
5463 | _never_ wait for ever -> test on target_is_async_p(). | |
5464 | However, before we do that we need to ensure that the caller | |
5465 | knows how to take the target into/out of async mode. */ | |
5466 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
5467 | if (!target_is_async_p ()) | |
5468 | signal (SIGINT, ofunc); | |
5469 | } | |
5470 | ||
5471 | buf = rs->buf; | |
5472 | ||
5473 | remote_stopped_by_watchpoint_p = 0; | |
5474 | ||
5475 | /* We got something. */ | |
5476 | rs->waiting_for_stop_reply = 0; | |
5477 | ||
3a29589a DJ |
5478 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
5479 | an 'F' or 'O' packet. */ | |
5480 | if (buf[0] != 'F' && buf[0] != 'O') | |
5481 | rs->ctrlc_pending_p = 0; | |
5482 | ||
74531fed PA |
5483 | switch (buf[0]) |
5484 | { | |
5485 | case 'E': /* Error of some sort. */ | |
5486 | /* We're out of sync with the target now. Did it continue or | |
5487 | not? Not is more likely, so report a stop. */ | |
5488 | warning (_("Remote failure reply: %s"), buf); | |
5489 | status->kind = TARGET_WAITKIND_STOPPED; | |
5490 | status->value.sig = TARGET_SIGNAL_0; | |
5491 | break; | |
5492 | case 'F': /* File-I/O request. */ | |
3a29589a DJ |
5493 | remote_fileio_request (buf, rs->ctrlc_pending_p); |
5494 | rs->ctrlc_pending_p = 0; | |
74531fed PA |
5495 | break; |
5496 | case 'T': case 'S': case 'X': case 'W': | |
5497 | { | |
5498 | struct stop_reply *stop_reply; | |
5499 | struct cleanup *old_chain; | |
5500 | ||
5501 | stop_reply = stop_reply_xmalloc (); | |
5502 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
5503 | remote_parse_stop_reply (buf, stop_reply); | |
5504 | discard_cleanups (old_chain); | |
5505 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
5506 | break; |
5507 | } | |
5508 | case 'O': /* Console output. */ | |
5509 | remote_console_output (buf + 1); | |
e24a49d8 | 5510 | |
c8e38a49 PA |
5511 | /* The target didn't really stop; keep waiting. */ |
5512 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 5513 | |
c8e38a49 PA |
5514 | break; |
5515 | case '\0': | |
5516 | if (last_sent_signal != TARGET_SIGNAL_0) | |
5517 | { | |
5518 | /* Zero length reply means that we tried 'S' or 'C' and the | |
5519 | remote system doesn't support it. */ | |
5520 | target_terminal_ours_for_output (); | |
5521 | printf_filtered | |
5522 | ("Can't send signals to this remote system. %s not sent.\n", | |
5523 | target_signal_to_name (last_sent_signal)); | |
5524 | last_sent_signal = TARGET_SIGNAL_0; | |
5525 | target_terminal_inferior (); | |
5526 | ||
5527 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
5528 | putpkt ((char *) buf); | |
5529 | ||
5530 | /* We just told the target to resume, so a stop reply is in | |
5531 | order. */ | |
e24a49d8 | 5532 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 5533 | break; |
43ff13b4 | 5534 | } |
c8e38a49 PA |
5535 | /* else fallthrough */ |
5536 | default: | |
5537 | warning (_("Invalid remote reply: %s"), buf); | |
5538 | /* Keep waiting. */ | |
5539 | rs->waiting_for_stop_reply = 1; | |
5540 | break; | |
43ff13b4 | 5541 | } |
c8e38a49 | 5542 | |
c8e38a49 | 5543 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
5544 | { |
5545 | /* Nothing interesting happened. If we're doing a non-blocking | |
5546 | poll, we're done. Otherwise, go back to waiting. */ | |
5547 | if (options & TARGET_WNOHANG) | |
5548 | return minus_one_ptid; | |
5549 | else | |
5550 | goto again; | |
5551 | } | |
74531fed PA |
5552 | else if (status->kind != TARGET_WAITKIND_EXITED |
5553 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
5554 | { |
5555 | if (!ptid_equal (event_ptid, null_ptid)) | |
5556 | record_currthread (event_ptid); | |
5557 | else | |
5558 | event_ptid = inferior_ptid; | |
43ff13b4 | 5559 | } |
74531fed PA |
5560 | else |
5561 | /* A process exit. Invalidate our notion of current thread. */ | |
5562 | record_currthread (minus_one_ptid); | |
79d7f229 | 5563 | |
82f73884 | 5564 | return event_ptid; |
43ff13b4 JM |
5565 | } |
5566 | ||
74531fed PA |
5567 | /* Wait until the remote machine stops, then return, storing status in |
5568 | STATUS just as `wait' would. */ | |
5569 | ||
c8e38a49 | 5570 | static ptid_t |
117de6a9 | 5571 | remote_wait (struct target_ops *ops, |
47608cb1 | 5572 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
5573 | { |
5574 | ptid_t event_ptid; | |
5575 | ||
74531fed | 5576 | if (non_stop) |
47608cb1 | 5577 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 5578 | else |
47608cb1 | 5579 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 5580 | |
74531fed | 5581 | if (target_can_async_p ()) |
c8e38a49 | 5582 | { |
74531fed PA |
5583 | /* If there are are events left in the queue tell the event loop |
5584 | to return here. */ | |
5585 | if (stop_reply_queue) | |
5586 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 5587 | } |
c8e38a49 PA |
5588 | |
5589 | return event_ptid; | |
5590 | } | |
5591 | ||
74ca34ce | 5592 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 5593 | |
b96ec7ac | 5594 | static int |
56be3814 | 5595 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
5596 | { |
5597 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 5598 | char *buf, *p; |
b96ec7ac AC |
5599 | char regp[MAX_REGISTER_SIZE]; |
5600 | int i; | |
5601 | ||
74ca34ce DJ |
5602 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
5603 | return 0; | |
5604 | ||
5605 | if (reg->pnum == -1) | |
5606 | return 0; | |
5607 | ||
2e9f7625 | 5608 | p = rs->buf; |
fcad0fa4 | 5609 | *p++ = 'p'; |
74ca34ce | 5610 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 5611 | *p++ = '\0'; |
1f4437a4 MS |
5612 | putpkt (rs->buf); |
5613 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3f9a994c | 5614 | |
2e9f7625 DJ |
5615 | buf = rs->buf; |
5616 | ||
74ca34ce DJ |
5617 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
5618 | { | |
5619 | case PACKET_OK: | |
5620 | break; | |
5621 | case PACKET_UNKNOWN: | |
5622 | return 0; | |
5623 | case PACKET_ERROR: | |
27a9c0bf MS |
5624 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
5625 | gdbarch_register_name (get_regcache_arch (regcache), | |
5626 | reg->regnum), | |
5627 | buf); | |
74ca34ce | 5628 | } |
3f9a994c JB |
5629 | |
5630 | /* If this register is unfetchable, tell the regcache. */ | |
5631 | if (buf[0] == 'x') | |
8480adf2 | 5632 | { |
56be3814 | 5633 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 5634 | return 1; |
b96ec7ac | 5635 | } |
b96ec7ac | 5636 | |
3f9a994c JB |
5637 | /* Otherwise, parse and supply the value. */ |
5638 | p = buf; | |
5639 | i = 0; | |
5640 | while (p[0] != 0) | |
5641 | { | |
5642 | if (p[1] == 0) | |
74ca34ce | 5643 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
5644 | |
5645 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5646 | p += 2; | |
5647 | } | |
56be3814 | 5648 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 5649 | return 1; |
b96ec7ac AC |
5650 | } |
5651 | ||
74ca34ce DJ |
5652 | /* Fetch the registers included in the target's 'g' packet. */ |
5653 | ||
29709017 DJ |
5654 | static int |
5655 | send_g_packet (void) | |
c906108c | 5656 | { |
d01949b6 | 5657 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 5658 | int buf_len; |
c906108c | 5659 | |
74ca34ce DJ |
5660 | sprintf (rs->buf, "g"); |
5661 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 5662 | |
29709017 DJ |
5663 | /* We can get out of synch in various cases. If the first character |
5664 | in the buffer is not a hex character, assume that has happened | |
5665 | and try to fetch another packet to read. */ | |
5666 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
5667 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
5668 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
5669 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
5670 | { | |
5671 | if (remote_debug) | |
5672 | fprintf_unfiltered (gdb_stdlog, | |
5673 | "Bad register packet; fetching a new packet\n"); | |
5674 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5675 | } | |
5676 | ||
74ca34ce DJ |
5677 | buf_len = strlen (rs->buf); |
5678 | ||
5679 | /* Sanity check the received packet. */ | |
5680 | if (buf_len % 2 != 0) | |
5681 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
5682 | |
5683 | return buf_len / 2; | |
5684 | } | |
5685 | ||
5686 | static void | |
56be3814 | 5687 | process_g_packet (struct regcache *regcache) |
29709017 | 5688 | { |
4a22f64d | 5689 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
5690 | struct remote_state *rs = get_remote_state (); |
5691 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5692 | int i, buf_len; | |
5693 | char *p; | |
5694 | char *regs; | |
5695 | ||
5696 | buf_len = strlen (rs->buf); | |
5697 | ||
5698 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
5699 | if (buf_len > 2 * rsa->sizeof_g_packet) |
5700 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
5701 | ||
5702 | /* Save the size of the packet sent to us by the target. It is used | |
5703 | as a heuristic when determining the max size of packets that the | |
5704 | target can safely receive. */ | |
5705 | if (rsa->actual_register_packet_size == 0) | |
5706 | rsa->actual_register_packet_size = buf_len; | |
5707 | ||
5708 | /* If this is smaller than we guessed the 'g' packet would be, | |
5709 | update our records. A 'g' reply that doesn't include a register's | |
5710 | value implies either that the register is not available, or that | |
5711 | the 'p' packet must be used. */ | |
5712 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 5713 | { |
74ca34ce DJ |
5714 | rsa->sizeof_g_packet = buf_len / 2; |
5715 | ||
4a22f64d | 5716 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 5717 | { |
74ca34ce DJ |
5718 | if (rsa->regs[i].pnum == -1) |
5719 | continue; | |
5720 | ||
5721 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
5722 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 5723 | else |
74ca34ce | 5724 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 5725 | } |
74ca34ce | 5726 | } |
b323314b | 5727 | |
74ca34ce | 5728 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
5729 | |
5730 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 5731 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 5732 | |
c906108c SS |
5733 | /* Reply describes registers byte by byte, each byte encoded as two |
5734 | hex characters. Suck them all up, then supply them to the | |
5735 | register cacheing/storage mechanism. */ | |
5736 | ||
74ca34ce | 5737 | p = rs->buf; |
ea9c271d | 5738 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5739 | { |
74ca34ce DJ |
5740 | if (p[0] == 0 || p[1] == 0) |
5741 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5742 | internal_error (__FILE__, __LINE__, | |
5743 | "unexpected end of 'g' packet reply"); | |
5744 | ||
c906108c | 5745 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5746 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5747 | else |
5748 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5749 | p += 2; | |
5750 | } | |
5751 | ||
a744cf53 MS |
5752 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
5753 | { | |
5754 | struct packet_reg *r = &rsa->regs[i]; | |
5755 | ||
5756 | if (r->in_g_packet) | |
5757 | { | |
5758 | if (r->offset * 2 >= strlen (rs->buf)) | |
5759 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5760 | internal_error (__FILE__, __LINE__, | |
5761 | "unexpected end of 'g' packet reply"); | |
5762 | else if (rs->buf[r->offset * 2] == 'x') | |
5763 | { | |
5764 | gdb_assert (r->offset * 2 < strlen (rs->buf)); | |
5765 | /* The register isn't available, mark it as such (at | |
5766 | the same time setting the value to zero). */ | |
5767 | regcache_raw_supply (regcache, r->regnum, NULL); | |
5768 | } | |
5769 | else | |
5770 | regcache_raw_supply (regcache, r->regnum, | |
5771 | regs + r->offset); | |
5772 | } | |
5773 | } | |
c906108c SS |
5774 | } |
5775 | ||
29709017 | 5776 | static void |
56be3814 | 5777 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5778 | { |
5779 | send_g_packet (); | |
56be3814 | 5780 | process_g_packet (regcache); |
29709017 DJ |
5781 | } |
5782 | ||
74ca34ce | 5783 | static void |
28439f5e PA |
5784 | remote_fetch_registers (struct target_ops *ops, |
5785 | struct regcache *regcache, int regnum) | |
74ca34ce | 5786 | { |
74ca34ce DJ |
5787 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5788 | int i; | |
5789 | ||
79d7f229 | 5790 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5791 | |
5792 | if (regnum >= 0) | |
5793 | { | |
5794 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5795 | |
74ca34ce DJ |
5796 | gdb_assert (reg != NULL); |
5797 | ||
5798 | /* If this register might be in the 'g' packet, try that first - | |
5799 | we are likely to read more than one register. If this is the | |
5800 | first 'g' packet, we might be overly optimistic about its | |
5801 | contents, so fall back to 'p'. */ | |
5802 | if (reg->in_g_packet) | |
5803 | { | |
56be3814 | 5804 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5805 | if (reg->in_g_packet) |
5806 | return; | |
5807 | } | |
5808 | ||
56be3814 | 5809 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5810 | return; |
5811 | ||
5812 | /* This register is not available. */ | |
56be3814 | 5813 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5814 | |
5815 | return; | |
5816 | } | |
5817 | ||
56be3814 | 5818 | fetch_registers_using_g (regcache); |
74ca34ce | 5819 | |
4a22f64d | 5820 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5821 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5822 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5823 | { |
5824 | /* This register is not available. */ | |
56be3814 | 5825 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5826 | } |
5827 | } | |
5828 | ||
c906108c SS |
5829 | /* Prepare to store registers. Since we may send them all (using a |
5830 | 'G' request), we have to read out the ones we don't want to change | |
5831 | first. */ | |
5832 | ||
c5aa993b | 5833 | static void |
316f2060 | 5834 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5835 | { |
ea9c271d | 5836 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5837 | int i; |
cfd77fa1 | 5838 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5839 | |
c906108c | 5840 | /* Make sure the entire registers array is valid. */ |
444abaca | 5841 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5842 | { |
5843 | case PACKET_DISABLE: | |
5844 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5845 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5846 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5847 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5848 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
5849 | break; |
5850 | case PACKET_ENABLE: | |
5851 | break; | |
5852 | } | |
5853 | } | |
5854 | ||
ad10f812 | 5855 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 5856 | packet was not recognized. */ |
5a2468f5 JM |
5857 | |
5858 | static int | |
1f4437a4 MS |
5859 | store_register_using_P (const struct regcache *regcache, |
5860 | struct packet_reg *reg) | |
5a2468f5 | 5861 | { |
4a22f64d | 5862 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 5863 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 5864 | /* Try storing a single register. */ |
6d820c5c | 5865 | char *buf = rs->buf; |
cfd77fa1 | 5866 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 5867 | char *p; |
5a2468f5 | 5868 | |
74ca34ce DJ |
5869 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
5870 | return 0; | |
5871 | ||
5872 | if (reg->pnum == -1) | |
5873 | return 0; | |
5874 | ||
ea9c271d | 5875 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 5876 | p = buf + strlen (buf); |
56be3814 | 5877 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 5878 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 MS |
5879 | putpkt (rs->buf); |
5880 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5a2468f5 | 5881 | |
74ca34ce DJ |
5882 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
5883 | { | |
5884 | case PACKET_OK: | |
5885 | return 1; | |
5886 | case PACKET_ERROR: | |
27a9c0bf MS |
5887 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
5888 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf); | |
74ca34ce DJ |
5889 | case PACKET_UNKNOWN: |
5890 | return 0; | |
5891 | default: | |
5892 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
5893 | } | |
c906108c SS |
5894 | } |
5895 | ||
23860348 MS |
5896 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
5897 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
5898 | |
5899 | static void | |
56be3814 | 5900 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 5901 | { |
d01949b6 | 5902 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 5903 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 5904 | gdb_byte *regs; |
c906108c SS |
5905 | char *p; |
5906 | ||
193cb69f AC |
5907 | /* Extract all the registers in the regcache copying them into a |
5908 | local buffer. */ | |
5909 | { | |
b323314b | 5910 | int i; |
a744cf53 | 5911 | |
ea9c271d DJ |
5912 | regs = alloca (rsa->sizeof_g_packet); |
5913 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 5914 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 5915 | { |
ea9c271d | 5916 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 5917 | |
b323314b | 5918 | if (r->in_g_packet) |
56be3814 | 5919 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
5920 | } |
5921 | } | |
c906108c SS |
5922 | |
5923 | /* Command describes registers byte by byte, | |
5924 | each byte encoded as two hex characters. */ | |
6d820c5c | 5925 | p = rs->buf; |
193cb69f | 5926 | *p++ = 'G'; |
74ca34ce DJ |
5927 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
5928 | updated. */ | |
5929 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
1f4437a4 MS |
5930 | putpkt (rs->buf); |
5931 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5932 | if (packet_check_result (rs->buf) == PACKET_ERROR) | |
27a9c0bf MS |
5933 | error (_("Could not write registers; remote failure reply '%s'"), |
5934 | rs->buf); | |
c906108c | 5935 | } |
74ca34ce DJ |
5936 | |
5937 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
5938 | of the register cache buffer. FIXME: ignores errors. */ | |
5939 | ||
5940 | static void | |
28439f5e PA |
5941 | remote_store_registers (struct target_ops *ops, |
5942 | struct regcache *regcache, int regnum) | |
74ca34ce | 5943 | { |
74ca34ce DJ |
5944 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5945 | int i; | |
5946 | ||
79d7f229 | 5947 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5948 | |
5949 | if (regnum >= 0) | |
5950 | { | |
5951 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
a744cf53 | 5952 | |
74ca34ce DJ |
5953 | gdb_assert (reg != NULL); |
5954 | ||
5955 | /* Always prefer to store registers using the 'P' packet if | |
5956 | possible; we often change only a small number of registers. | |
5957 | Sometimes we change a larger number; we'd need help from a | |
5958 | higher layer to know to use 'G'. */ | |
56be3814 | 5959 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
5960 | return; |
5961 | ||
5962 | /* For now, don't complain if we have no way to write the | |
5963 | register. GDB loses track of unavailable registers too | |
5964 | easily. Some day, this may be an error. We don't have | |
5965 | any way to read the register, either... */ | |
5966 | if (!reg->in_g_packet) | |
5967 | return; | |
5968 | ||
56be3814 | 5969 | store_registers_using_G (regcache); |
74ca34ce DJ |
5970 | return; |
5971 | } | |
5972 | ||
56be3814 | 5973 | store_registers_using_G (regcache); |
74ca34ce | 5974 | |
4a22f64d | 5975 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5976 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5977 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5978 | /* See above for why we do not issue an error here. */ |
5979 | continue; | |
5980 | } | |
c906108c SS |
5981 | \f |
5982 | ||
5983 | /* Return the number of hex digits in num. */ | |
5984 | ||
5985 | static int | |
fba45db2 | 5986 | hexnumlen (ULONGEST num) |
c906108c SS |
5987 | { |
5988 | int i; | |
5989 | ||
5990 | for (i = 0; num != 0; i++) | |
5991 | num >>= 4; | |
5992 | ||
5993 | return max (i, 1); | |
5994 | } | |
5995 | ||
2df3850c | 5996 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
5997 | |
5998 | static int | |
fba45db2 | 5999 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 6000 | { |
c906108c | 6001 | int len = hexnumlen (num); |
a744cf53 | 6002 | |
2df3850c JM |
6003 | return hexnumnstr (buf, num, len); |
6004 | } | |
6005 | ||
c906108c | 6006 | |
2df3850c | 6007 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 6008 | |
2df3850c | 6009 | static int |
fba45db2 | 6010 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
6011 | { |
6012 | int i; | |
6013 | ||
6014 | buf[width] = '\0'; | |
6015 | ||
6016 | for (i = width - 1; i >= 0; i--) | |
c906108c | 6017 | { |
c5aa993b | 6018 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
6019 | num >>= 4; |
6020 | } | |
6021 | ||
2df3850c | 6022 | return width; |
c906108c SS |
6023 | } |
6024 | ||
23860348 | 6025 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
6026 | |
6027 | static CORE_ADDR | |
fba45db2 | 6028 | remote_address_masked (CORE_ADDR addr) |
c906108c | 6029 | { |
911c95a5 | 6030 | int address_size = remote_address_size; |
a744cf53 | 6031 | |
911c95a5 UW |
6032 | /* If "remoteaddresssize" was not set, default to target address size. */ |
6033 | if (!address_size) | |
1cf3db46 | 6034 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
6035 | |
6036 | if (address_size > 0 | |
6037 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
6038 | { |
6039 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 6040 | in a ULONGEST variable. */ |
c906108c | 6041 | ULONGEST mask = 1; |
a744cf53 | 6042 | |
911c95a5 | 6043 | mask = (mask << address_size) - 1; |
c906108c SS |
6044 | addr &= mask; |
6045 | } | |
6046 | return addr; | |
6047 | } | |
6048 | ||
a31ea83d DJ |
6049 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
6050 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
6051 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
6052 | (which may be more than *OUT_LEN due to escape characters). The | |
6053 | total number of bytes in the output buffer will be at most | |
6054 | OUT_MAXLEN. */ | |
6055 | ||
6056 | static int | |
6057 | remote_escape_output (const gdb_byte *buffer, int len, | |
6058 | gdb_byte *out_buf, int *out_len, | |
6059 | int out_maxlen) | |
6060 | { | |
6061 | int input_index, output_index; | |
6062 | ||
6063 | output_index = 0; | |
6064 | for (input_index = 0; input_index < len; input_index++) | |
6065 | { | |
6066 | gdb_byte b = buffer[input_index]; | |
6067 | ||
6068 | if (b == '$' || b == '#' || b == '}') | |
6069 | { | |
6070 | /* These must be escaped. */ | |
6071 | if (output_index + 2 > out_maxlen) | |
6072 | break; | |
6073 | out_buf[output_index++] = '}'; | |
6074 | out_buf[output_index++] = b ^ 0x20; | |
6075 | } | |
6076 | else | |
6077 | { | |
6078 | if (output_index + 1 > out_maxlen) | |
6079 | break; | |
6080 | out_buf[output_index++] = b; | |
6081 | } | |
6082 | } | |
6083 | ||
6084 | *out_len = input_index; | |
6085 | return output_index; | |
6086 | } | |
6087 | ||
0876f84a DJ |
6088 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
6089 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
6090 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
6091 | ||
6092 | This function reverses remote_escape_output. It allows more | |
6093 | escaped characters than that function does, in particular because | |
6094 | '*' must be escaped to avoid the run-length encoding processing | |
6095 | in reading packets. */ | |
6096 | ||
6097 | static int | |
6098 | remote_unescape_input (const gdb_byte *buffer, int len, | |
6099 | gdb_byte *out_buf, int out_maxlen) | |
6100 | { | |
6101 | int input_index, output_index; | |
6102 | int escaped; | |
6103 | ||
6104 | output_index = 0; | |
6105 | escaped = 0; | |
6106 | for (input_index = 0; input_index < len; input_index++) | |
6107 | { | |
6108 | gdb_byte b = buffer[input_index]; | |
6109 | ||
6110 | if (output_index + 1 > out_maxlen) | |
6111 | { | |
6112 | warning (_("Received too much data from remote target;" | |
6113 | " ignoring overflow.")); | |
6114 | return output_index; | |
6115 | } | |
6116 | ||
6117 | if (escaped) | |
6118 | { | |
6119 | out_buf[output_index++] = b ^ 0x20; | |
6120 | escaped = 0; | |
6121 | } | |
6122 | else if (b == '}') | |
6123 | escaped = 1; | |
6124 | else | |
6125 | out_buf[output_index++] = b; | |
6126 | } | |
6127 | ||
6128 | if (escaped) | |
6129 | error (_("Unmatched escape character in target response.")); | |
6130 | ||
6131 | return output_index; | |
6132 | } | |
6133 | ||
c906108c SS |
6134 | /* Determine whether the remote target supports binary downloading. |
6135 | This is accomplished by sending a no-op memory write of zero length | |
6136 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
6137 | the whole packet, since many stubs strip the eighth bit and |
6138 | subsequently compute a wrong checksum, which causes real havoc with | |
6139 | remote_write_bytes. | |
7a292a7a | 6140 | |
96baa820 JM |
6141 | NOTE: This can still lose if the serial line is not eight-bit |
6142 | clean. In cases like this, the user should clear "remote | |
23860348 | 6143 | X-packet". */ |
96baa820 | 6144 | |
c906108c | 6145 | static void |
fba45db2 | 6146 | check_binary_download (CORE_ADDR addr) |
c906108c | 6147 | { |
d01949b6 | 6148 | struct remote_state *rs = get_remote_state (); |
24b06219 | 6149 | |
444abaca | 6150 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 6151 | { |
96baa820 JM |
6152 | case PACKET_DISABLE: |
6153 | break; | |
6154 | case PACKET_ENABLE: | |
6155 | break; | |
6156 | case PACKET_SUPPORT_UNKNOWN: | |
6157 | { | |
96baa820 | 6158 | char *p; |
802188a7 | 6159 | |
2e9f7625 | 6160 | p = rs->buf; |
96baa820 JM |
6161 | *p++ = 'X'; |
6162 | p += hexnumstr (p, (ULONGEST) addr); | |
6163 | *p++ = ','; | |
6164 | p += hexnumstr (p, (ULONGEST) 0); | |
6165 | *p++ = ':'; | |
6166 | *p = '\0'; | |
802188a7 | 6167 | |
2e9f7625 | 6168 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6169 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6170 | |
2e9f7625 | 6171 | if (rs->buf[0] == '\0') |
96baa820 JM |
6172 | { |
6173 | if (remote_debug) | |
6174 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
6175 | "binary downloading NOT " |
6176 | "supported by target\n"); | |
444abaca | 6177 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
6178 | } |
6179 | else | |
6180 | { | |
6181 | if (remote_debug) | |
6182 | fprintf_unfiltered (gdb_stdlog, | |
6183 | "binary downloading suppported by target\n"); | |
444abaca | 6184 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
6185 | } |
6186 | break; | |
6187 | } | |
c906108c SS |
6188 | } |
6189 | } | |
6190 | ||
6191 | /* Write memory data directly to the remote machine. | |
6192 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 6193 | HEADER is the starting part of the packet. |
c906108c SS |
6194 | MEMADDR is the address in the remote memory space. |
6195 | MYADDR is the address of the buffer in our space. | |
6196 | LEN is the number of bytes. | |
a76d924d DJ |
6197 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
6198 | should send data as binary ('X'), or hex-encoded ('M'). | |
6199 | ||
6200 | The function creates packet of the form | |
6201 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
6202 | ||
6203 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
6204 | ||
6205 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
6206 | are omitted. | |
6207 | ||
6208 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 6209 | error. Only transfer a single packet. */ |
c906108c | 6210 | |
a76d924d DJ |
6211 | static int |
6212 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
6213 | const gdb_byte *myaddr, int len, | |
6214 | char packet_format, int use_length) | |
c906108c | 6215 | { |
6d820c5c | 6216 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 6217 | char *p; |
a76d924d DJ |
6218 | char *plen = NULL; |
6219 | int plenlen = 0; | |
917317f4 JM |
6220 | int todo; |
6221 | int nr_bytes; | |
a257b5bb | 6222 | int payload_size; |
6765f3e5 | 6223 | int payload_length; |
a76d924d DJ |
6224 | int header_length; |
6225 | ||
6226 | if (packet_format != 'X' && packet_format != 'M') | |
6227 | internal_error (__FILE__, __LINE__, | |
6228 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 6229 | |
b2182ed2 DJ |
6230 | if (len <= 0) |
6231 | return 0; | |
6232 | ||
3de11b2e | 6233 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 6234 | |
6d820c5c DJ |
6235 | /* The packet buffer will be large enough for the payload; |
6236 | get_memory_packet_size ensures this. */ | |
a76d924d | 6237 | rs->buf[0] = '\0'; |
c906108c | 6238 | |
a257b5bb | 6239 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
6240 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
6241 | */ | |
a76d924d DJ |
6242 | payload_size -= strlen ("$,:#NN"); |
6243 | if (!use_length) | |
6244 | /* The comma won't be used. */ | |
6245 | payload_size += 1; | |
6246 | header_length = strlen (header); | |
6247 | payload_size -= header_length; | |
3de11b2e | 6248 | payload_size -= hexnumlen (memaddr); |
c906108c | 6249 | |
a76d924d | 6250 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 6251 | |
a76d924d DJ |
6252 | strcat (rs->buf, header); |
6253 | p = rs->buf + strlen (header); | |
6254 | ||
6255 | /* Compute a best guess of the number of bytes actually transfered. */ | |
6256 | if (packet_format == 'X') | |
c906108c | 6257 | { |
23860348 | 6258 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 6259 | todo = min (len, payload_size); |
a76d924d DJ |
6260 | if (use_length) |
6261 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6262 | todo = min (todo, payload_size); |
a76d924d DJ |
6263 | } |
6264 | else | |
6265 | { | |
23860348 | 6266 | /* Num bytes that will fit. */ |
a257b5bb | 6267 | todo = min (len, payload_size / 2); |
a76d924d DJ |
6268 | if (use_length) |
6269 | payload_size -= hexnumlen (todo); | |
3de11b2e | 6270 | todo = min (todo, payload_size / 2); |
917317f4 | 6271 | } |
a76d924d | 6272 | |
3de11b2e NS |
6273 | if (todo <= 0) |
6274 | internal_error (__FILE__, __LINE__, | |
6275 | _("minumum packet size too small to write data")); | |
802188a7 | 6276 | |
6765f3e5 DJ |
6277 | /* If we already need another packet, then try to align the end |
6278 | of this packet to a useful boundary. */ | |
6279 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
6280 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
6281 | ||
a257b5bb | 6282 | /* Append "<memaddr>". */ |
917317f4 JM |
6283 | memaddr = remote_address_masked (memaddr); |
6284 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 6285 | |
a76d924d DJ |
6286 | if (use_length) |
6287 | { | |
6288 | /* Append ",". */ | |
6289 | *p++ = ','; | |
802188a7 | 6290 | |
a76d924d DJ |
6291 | /* Append <len>. Retain the location/size of <len>. It may need to |
6292 | be adjusted once the packet body has been created. */ | |
6293 | plen = p; | |
6294 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
6295 | p += plenlen; | |
6296 | } | |
a257b5bb AC |
6297 | |
6298 | /* Append ":". */ | |
917317f4 JM |
6299 | *p++ = ':'; |
6300 | *p = '\0'; | |
802188a7 | 6301 | |
a257b5bb | 6302 | /* Append the packet body. */ |
a76d924d | 6303 | if (packet_format == 'X') |
917317f4 | 6304 | { |
917317f4 JM |
6305 | /* Binary mode. Send target system values byte by byte, in |
6306 | increasing byte addresses. Only escape certain critical | |
6307 | characters. */ | |
6765f3e5 DJ |
6308 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
6309 | payload_size); | |
6310 | ||
6311 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
6312 | a second try to keep the end of the packet aligned. Don't do |
6313 | this if the packet is tiny. */ | |
6314 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
6315 | { |
6316 | int new_nr_bytes; | |
6317 | ||
6318 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
6319 | - memaddr); | |
6320 | if (new_nr_bytes != nr_bytes) | |
6321 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
6322 | p, &nr_bytes, | |
6323 | payload_size); | |
6324 | } | |
6325 | ||
6326 | p += payload_length; | |
a76d924d | 6327 | if (use_length && nr_bytes < todo) |
c906108c | 6328 | { |
802188a7 | 6329 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
6330 | and we have actually sent fewer bytes than planned. |
6331 | Fix-up the length field of the packet. Use the same | |
6332 | number of characters as before. */ | |
917317f4 JM |
6333 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
6334 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 6335 | } |
a76d924d DJ |
6336 | } |
6337 | else | |
6338 | { | |
917317f4 JM |
6339 | /* Normal mode: Send target system values byte by byte, in |
6340 | increasing byte addresses. Each byte is encoded as a two hex | |
6341 | value. */ | |
2644f393 | 6342 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 6343 | p += 2 * nr_bytes; |
c906108c | 6344 | } |
802188a7 | 6345 | |
2e9f7625 | 6346 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 6347 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 6348 | |
2e9f7625 | 6349 | if (rs->buf[0] == 'E') |
917317f4 JM |
6350 | { |
6351 | /* There is no correspondance between what the remote protocol | |
6352 | uses for errors and errno codes. We would like a cleaner way | |
6353 | of representing errors (big enough to include errno codes, | |
6354 | bfd_error codes, and others). But for now just return EIO. */ | |
6355 | errno = EIO; | |
6356 | return 0; | |
6357 | } | |
802188a7 | 6358 | |
23860348 MS |
6359 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
6360 | fewer bytes than we'd planned. */ | |
917317f4 | 6361 | return nr_bytes; |
c906108c SS |
6362 | } |
6363 | ||
a76d924d DJ |
6364 | /* Write memory data directly to the remote machine. |
6365 | This does not inform the data cache; the data cache uses this. | |
6366 | MEMADDR is the address in the remote memory space. | |
6367 | MYADDR is the address of the buffer in our space. | |
6368 | LEN is the number of bytes. | |
6369 | ||
6370 | Returns number of bytes transferred, or 0 (setting errno) for | |
6371 | error. Only transfer a single packet. */ | |
6372 | ||
6373 | int | |
6374 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
6375 | { | |
6376 | char *packet_format = 0; | |
6377 | ||
6378 | /* Check whether the target supports binary download. */ | |
6379 | check_binary_download (memaddr); | |
6380 | ||
6381 | switch (remote_protocol_packets[PACKET_X].support) | |
6382 | { | |
6383 | case PACKET_ENABLE: | |
6384 | packet_format = "X"; | |
6385 | break; | |
6386 | case PACKET_DISABLE: | |
6387 | packet_format = "M"; | |
6388 | break; | |
6389 | case PACKET_SUPPORT_UNKNOWN: | |
6390 | internal_error (__FILE__, __LINE__, | |
6391 | _("remote_write_bytes: bad internal state")); | |
6392 | default: | |
6393 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
6394 | } | |
6395 | ||
6396 | return remote_write_bytes_aux (packet_format, | |
6397 | memaddr, myaddr, len, packet_format[0], 1); | |
6398 | } | |
6399 | ||
c906108c SS |
6400 | /* Read memory data directly from the remote machine. |
6401 | This does not use the data cache; the data cache uses this. | |
6402 | MEMADDR is the address in the remote memory space. | |
6403 | MYADDR is the address of the buffer in our space. | |
6404 | LEN is the number of bytes. | |
6405 | ||
6406 | Returns number of bytes transferred, or 0 for error. */ | |
6407 | ||
917317f4 JM |
6408 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
6409 | remote targets) shouldn't attempt to read the entire buffer. | |
6410 | Instead it should read a single packet worth of data and then | |
6411 | return the byte size of that packet to the caller. The caller (its | |
6412 | caller and its callers caller ;-) already contains code for | |
23860348 | 6413 | handling partial reads. */ |
917317f4 | 6414 | |
449092f6 | 6415 | int |
cfd77fa1 | 6416 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 6417 | { |
6d820c5c | 6418 | struct remote_state *rs = get_remote_state (); |
23860348 | 6419 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
6420 | int origlen; |
6421 | ||
b2182ed2 DJ |
6422 | if (len <= 0) |
6423 | return 0; | |
6424 | ||
11cf8741 | 6425 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
6426 | /* The packet buffer will be large enough for the payload; |
6427 | get_memory_packet_size ensures this. */ | |
c906108c SS |
6428 | |
6429 | origlen = len; | |
6430 | while (len > 0) | |
6431 | { | |
c906108c SS |
6432 | char *p; |
6433 | int todo; | |
6434 | int i; | |
6435 | ||
c5aa993b | 6436 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
6437 | |
6438 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 6439 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 6440 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 6441 | p = rs->buf; |
c906108c SS |
6442 | *p++ = 'm'; |
6443 | p += hexnumstr (p, (ULONGEST) memaddr); | |
6444 | *p++ = ','; | |
6445 | p += hexnumstr (p, (ULONGEST) todo); | |
6446 | *p = '\0'; | |
6447 | ||
2e9f7625 | 6448 | putpkt (rs->buf); |
6d820c5c | 6449 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6450 | |
2e9f7625 DJ |
6451 | if (rs->buf[0] == 'E' |
6452 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
6453 | && rs->buf[3] == '\0') | |
c906108c | 6454 | { |
23860348 MS |
6455 | /* There is no correspondance between what the remote |
6456 | protocol uses for errors and errno codes. We would like | |
6457 | a cleaner way of representing errors (big enough to | |
6458 | include errno codes, bfd_error codes, and others). But | |
6459 | for now just return EIO. */ | |
c906108c SS |
6460 | errno = EIO; |
6461 | return 0; | |
6462 | } | |
6463 | ||
c5aa993b JM |
6464 | /* Reply describes memory byte by byte, |
6465 | each byte encoded as two hex characters. */ | |
c906108c | 6466 | |
2e9f7625 | 6467 | p = rs->buf; |
30559e10 | 6468 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 6469 | { |
30559e10 | 6470 | /* Reply is short. This means that we were able to read |
23860348 | 6471 | only part of what we wanted to. */ |
30559e10 | 6472 | return i + (origlen - len); |
c906108c SS |
6473 | } |
6474 | myaddr += todo; | |
6475 | memaddr += todo; | |
6476 | len -= todo; | |
6477 | } | |
6478 | return origlen; | |
6479 | } | |
74531fed PA |
6480 | \f |
6481 | ||
6482 | /* Remote notification handler. */ | |
6483 | ||
6484 | static void | |
6485 | handle_notification (char *buf, size_t length) | |
6486 | { | |
6487 | if (strncmp (buf, "Stop:", 5) == 0) | |
6488 | { | |
6489 | if (pending_stop_reply) | |
0723dbf5 PA |
6490 | { |
6491 | /* We've already parsed the in-flight stop-reply, but the | |
6492 | stub for some reason thought we didn't, possibly due to | |
6493 | timeout on its side. Just ignore it. */ | |
6494 | if (remote_debug) | |
6495 | fprintf_unfiltered (gdb_stdlog, "ignoring resent notification\n"); | |
6496 | } | |
74531fed PA |
6497 | else |
6498 | { | |
6499 | struct cleanup *old_chain; | |
6500 | struct stop_reply *reply = stop_reply_xmalloc (); | |
a744cf53 | 6501 | |
74531fed PA |
6502 | old_chain = make_cleanup (do_stop_reply_xfree, reply); |
6503 | ||
6504 | remote_parse_stop_reply (buf + 5, reply); | |
6505 | ||
6506 | discard_cleanups (old_chain); | |
6507 | ||
6508 | /* Be careful to only set it after parsing, since an error | |
6509 | may be thrown then. */ | |
6510 | pending_stop_reply = reply; | |
6511 | ||
6512 | /* Notify the event loop there's a stop reply to acknowledge | |
6513 | and that there may be more events to fetch. */ | |
6514 | mark_async_event_handler (remote_async_get_pending_events_token); | |
0723dbf5 PA |
6515 | |
6516 | if (remote_debug) | |
6517 | fprintf_unfiltered (gdb_stdlog, "stop notification captured\n"); | |
74531fed PA |
6518 | } |
6519 | } | |
6520 | else | |
6521 | /* We ignore notifications we don't recognize, for compatibility | |
6522 | with newer stubs. */ | |
6523 | ; | |
6524 | } | |
6525 | ||
c906108c SS |
6526 | \f |
6527 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
6528 | transferring to or from debugger address BUFFER. Write to inferior |
6529 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
6530 | read; 0 for error. TARGET is unused. */ | |
392a587b | 6531 | |
c906108c | 6532 | static int |
961cb7b5 | 6533 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 6534 | int should_write, struct mem_attrib *attrib, |
29e57380 | 6535 | struct target_ops *target) |
c906108c | 6536 | { |
4930751a C |
6537 | int res; |
6538 | ||
82f73884 PA |
6539 | set_general_thread (inferior_ptid); |
6540 | ||
4930751a | 6541 | if (should_write) |
b2182ed2 | 6542 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 6543 | else |
b2182ed2 | 6544 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
6545 | |
6546 | return res; | |
c906108c SS |
6547 | } |
6548 | ||
a76d924d DJ |
6549 | /* Sends a packet with content determined by the printf format string |
6550 | FORMAT and the remaining arguments, then gets the reply. Returns | |
6551 | whether the packet was a success, a failure, or unknown. */ | |
6552 | ||
2c0b251b | 6553 | static enum packet_result |
a76d924d DJ |
6554 | remote_send_printf (const char *format, ...) |
6555 | { | |
6556 | struct remote_state *rs = get_remote_state (); | |
6557 | int max_size = get_remote_packet_size (); | |
a76d924d | 6558 | va_list ap; |
a744cf53 | 6559 | |
a76d924d DJ |
6560 | va_start (ap, format); |
6561 | ||
6562 | rs->buf[0] = '\0'; | |
6563 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
6564 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
6565 | ||
6566 | if (putpkt (rs->buf) < 0) | |
6567 | error (_("Communication problem with target.")); | |
6568 | ||
6569 | rs->buf[0] = '\0'; | |
6570 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6571 | ||
6572 | return packet_check_result (rs->buf); | |
6573 | } | |
6574 | ||
6575 | static void | |
6576 | restore_remote_timeout (void *p) | |
6577 | { | |
6578 | int value = *(int *)p; | |
a744cf53 | 6579 | |
a76d924d DJ |
6580 | remote_timeout = value; |
6581 | } | |
6582 | ||
6583 | /* Flash writing can take quite some time. We'll set | |
6584 | effectively infinite timeout for flash operations. | |
6585 | In future, we'll need to decide on a better approach. */ | |
6586 | static const int remote_flash_timeout = 1000; | |
6587 | ||
6588 | static void | |
6589 | remote_flash_erase (struct target_ops *ops, | |
6590 | ULONGEST address, LONGEST length) | |
6591 | { | |
5af949e3 | 6592 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
6593 | int saved_remote_timeout = remote_timeout; |
6594 | enum packet_result ret; | |
a76d924d DJ |
6595 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, |
6596 | &saved_remote_timeout); | |
a744cf53 | 6597 | |
a76d924d DJ |
6598 | remote_timeout = remote_flash_timeout; |
6599 | ||
6600 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 6601 | phex (address, addr_size), |
a76d924d DJ |
6602 | phex (length, 4)); |
6603 | switch (ret) | |
6604 | { | |
6605 | case PACKET_UNKNOWN: | |
6606 | error (_("Remote target does not support flash erase")); | |
6607 | case PACKET_ERROR: | |
6608 | error (_("Error erasing flash with vFlashErase packet")); | |
6609 | default: | |
6610 | break; | |
6611 | } | |
6612 | ||
6613 | do_cleanups (back_to); | |
6614 | } | |
6615 | ||
6616 | static LONGEST | |
6617 | remote_flash_write (struct target_ops *ops, | |
6618 | ULONGEST address, LONGEST length, | |
6619 | const gdb_byte *data) | |
6620 | { | |
6621 | int saved_remote_timeout = remote_timeout; | |
6622 | int ret; | |
6623 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6624 | &saved_remote_timeout); | |
6625 | ||
6626 | remote_timeout = remote_flash_timeout; | |
6627 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
6628 | do_cleanups (back_to); | |
6629 | ||
6630 | return ret; | |
6631 | } | |
6632 | ||
6633 | static void | |
6634 | remote_flash_done (struct target_ops *ops) | |
6635 | { | |
6636 | int saved_remote_timeout = remote_timeout; | |
6637 | int ret; | |
6638 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
6639 | &saved_remote_timeout); | |
6640 | ||
6641 | remote_timeout = remote_flash_timeout; | |
6642 | ret = remote_send_printf ("vFlashDone"); | |
6643 | do_cleanups (back_to); | |
6644 | ||
6645 | switch (ret) | |
6646 | { | |
6647 | case PACKET_UNKNOWN: | |
6648 | error (_("Remote target does not support vFlashDone")); | |
6649 | case PACKET_ERROR: | |
6650 | error (_("Error finishing flash operation")); | |
6651 | default: | |
6652 | break; | |
6653 | } | |
6654 | } | |
6655 | ||
c906108c | 6656 | static void |
fba45db2 | 6657 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
6658 | { |
6659 | puts_filtered ("Debugging a target over a serial line.\n"); | |
6660 | } | |
6661 | \f | |
6662 | /* Stuff for dealing with the packets which are part of this protocol. | |
6663 | See comment at top of file for details. */ | |
6664 | ||
0876f84a | 6665 | /* Read a single character from the remote end. */ |
c906108c SS |
6666 | |
6667 | static int | |
fba45db2 | 6668 | readchar (int timeout) |
c906108c SS |
6669 | { |
6670 | int ch; | |
6671 | ||
2cd58942 | 6672 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 6673 | |
2acceee2 | 6674 | if (ch >= 0) |
0876f84a | 6675 | return ch; |
2acceee2 JM |
6676 | |
6677 | switch ((enum serial_rc) ch) | |
c906108c SS |
6678 | { |
6679 | case SERIAL_EOF: | |
ce5ce7ed | 6680 | pop_target (); |
8a3fe4f8 | 6681 | error (_("Remote connection closed")); |
2acceee2 | 6682 | /* no return */ |
c906108c | 6683 | case SERIAL_ERROR: |
4ac8c4da | 6684 | pop_target (); |
3e43a32a MS |
6685 | perror_with_name (_("Remote communication error. " |
6686 | "Target disconnected.")); | |
2acceee2 | 6687 | /* no return */ |
c906108c | 6688 | case SERIAL_TIMEOUT: |
2acceee2 | 6689 | break; |
c906108c | 6690 | } |
2acceee2 | 6691 | return ch; |
c906108c SS |
6692 | } |
6693 | ||
6d820c5c DJ |
6694 | /* Send the command in *BUF to the remote machine, and read the reply |
6695 | into *BUF. Report an error if we get an error reply. Resize | |
6696 | *BUF using xrealloc if necessary to hold the result, and update | |
6697 | *SIZEOF_BUF. */ | |
c906108c SS |
6698 | |
6699 | static void | |
6d820c5c DJ |
6700 | remote_send (char **buf, |
6701 | long *sizeof_buf) | |
c906108c | 6702 | { |
6d820c5c | 6703 | putpkt (*buf); |
c2d11a7d | 6704 | getpkt (buf, sizeof_buf, 0); |
c906108c | 6705 | |
6d820c5c DJ |
6706 | if ((*buf)[0] == 'E') |
6707 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
6708 | } |
6709 | ||
6e5abd65 PA |
6710 | /* Return a pointer to an xmalloc'ed string representing an escaped |
6711 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
6712 | etc. The caller is responsible for releasing the returned | |
6713 | memory. */ | |
6714 | ||
6715 | static char * | |
6716 | escape_buffer (const char *buf, int n) | |
6717 | { | |
6718 | struct cleanup *old_chain; | |
6719 | struct ui_file *stb; | |
6720 | char *str; | |
6e5abd65 PA |
6721 | |
6722 | stb = mem_fileopen (); | |
6723 | old_chain = make_cleanup_ui_file_delete (stb); | |
6724 | ||
6725 | fputstrn_unfiltered (buf, n, 0, stb); | |
759ef836 | 6726 | str = ui_file_xstrdup (stb, NULL); |
6e5abd65 PA |
6727 | do_cleanups (old_chain); |
6728 | return str; | |
6729 | } | |
6730 | ||
c906108c SS |
6731 | /* Display a null-terminated packet on stdout, for debugging, using C |
6732 | string notation. */ | |
6733 | ||
6734 | static void | |
fba45db2 | 6735 | print_packet (char *buf) |
c906108c SS |
6736 | { |
6737 | puts_filtered ("\""); | |
43e526b9 | 6738 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
6739 | puts_filtered ("\""); |
6740 | } | |
6741 | ||
6742 | int | |
fba45db2 | 6743 | putpkt (char *buf) |
c906108c SS |
6744 | { |
6745 | return putpkt_binary (buf, strlen (buf)); | |
6746 | } | |
6747 | ||
6748 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 6749 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 6750 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
6751 | and for a possible /0 if we are debugging (remote_debug) and want |
6752 | to print the sent packet as a string. */ | |
c906108c SS |
6753 | |
6754 | static int | |
fba45db2 | 6755 | putpkt_binary (char *buf, int cnt) |
c906108c | 6756 | { |
2d717e4f | 6757 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6758 | int i; |
6759 | unsigned char csum = 0; | |
11cf8741 | 6760 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6761 | |
c906108c SS |
6762 | int ch; |
6763 | int tcount = 0; | |
6764 | char *p; | |
6765 | ||
e24a49d8 PA |
6766 | /* Catch cases like trying to read memory or listing threads while |
6767 | we're waiting for a stop reply. The remote server wouldn't be | |
6768 | ready to handle this request, so we'd hang and timeout. We don't | |
6769 | have to worry about this in synchronous mode, because in that | |
6770 | case it's not possible to issue a command while the target is | |
74531fed PA |
6771 | running. This is not a problem in non-stop mode, because in that |
6772 | case, the stub is always ready to process serial input. */ | |
6773 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6774 | error (_("Cannot execute this command while the target is running.")); |
6775 | ||
2d717e4f DJ |
6776 | /* We're sending out a new packet. Make sure we don't look at a |
6777 | stale cached response. */ | |
6778 | rs->cached_wait_status = 0; | |
6779 | ||
c906108c SS |
6780 | /* Copy the packet into buffer BUF2, encapsulating it |
6781 | and giving it a checksum. */ | |
6782 | ||
c906108c SS |
6783 | p = buf2; |
6784 | *p++ = '$'; | |
6785 | ||
6786 | for (i = 0; i < cnt; i++) | |
6787 | { | |
6788 | csum += buf[i]; | |
6789 | *p++ = buf[i]; | |
6790 | } | |
6791 | *p++ = '#'; | |
6792 | *p++ = tohex ((csum >> 4) & 0xf); | |
6793 | *p++ = tohex (csum & 0xf); | |
6794 | ||
6795 | /* Send it over and over until we get a positive ack. */ | |
6796 | ||
6797 | while (1) | |
6798 | { | |
6799 | int started_error_output = 0; | |
6800 | ||
6801 | if (remote_debug) | |
6802 | { | |
6e5abd65 PA |
6803 | struct cleanup *old_chain; |
6804 | char *str; | |
6805 | ||
c906108c | 6806 | *p = '\0'; |
6e5abd65 PA |
6807 | str = escape_buffer (buf2, p - buf2); |
6808 | old_chain = make_cleanup (xfree, str); | |
6809 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6810 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6811 | do_cleanups (old_chain); |
c906108c | 6812 | } |
2cd58942 | 6813 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6814 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6815 | |
a6f3e723 SL |
6816 | /* If this is a no acks version of the remote protocol, send the |
6817 | packet and move on. */ | |
6818 | if (rs->noack_mode) | |
6819 | break; | |
6820 | ||
74531fed PA |
6821 | /* Read until either a timeout occurs (-2) or '+' is read. |
6822 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6823 | while (1) |
6824 | { | |
6825 | ch = readchar (remote_timeout); | |
6826 | ||
c5aa993b | 6827 | if (remote_debug) |
c906108c SS |
6828 | { |
6829 | switch (ch) | |
6830 | { | |
6831 | case '+': | |
1216fa2c | 6832 | case '-': |
c906108c SS |
6833 | case SERIAL_TIMEOUT: |
6834 | case '$': | |
74531fed | 6835 | case '%': |
c906108c SS |
6836 | if (started_error_output) |
6837 | { | |
6838 | putchar_unfiltered ('\n'); | |
6839 | started_error_output = 0; | |
6840 | } | |
6841 | } | |
6842 | } | |
6843 | ||
6844 | switch (ch) | |
6845 | { | |
6846 | case '+': | |
6847 | if (remote_debug) | |
0f71a2f6 | 6848 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6849 | return 1; |
1216fa2c AC |
6850 | case '-': |
6851 | if (remote_debug) | |
6852 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 6853 | case SERIAL_TIMEOUT: |
c5aa993b | 6854 | tcount++; |
c906108c SS |
6855 | if (tcount > 3) |
6856 | return 0; | |
23860348 | 6857 | break; /* Retransmit buffer. */ |
c906108c SS |
6858 | case '$': |
6859 | { | |
40e3f985 | 6860 | if (remote_debug) |
2bc416ba | 6861 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6862 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6863 | /* It's probably an old response sent because an ACK |
6864 | was lost. Gobble up the packet and ack it so it | |
6865 | doesn't get retransmitted when we resend this | |
6866 | packet. */ | |
6d820c5c | 6867 | skip_frame (); |
d6f7abdf | 6868 | serial_write (remote_desc, "+", 1); |
23860348 | 6869 | continue; /* Now, go look for +. */ |
c906108c | 6870 | } |
74531fed PA |
6871 | |
6872 | case '%': | |
6873 | { | |
6874 | int val; | |
6875 | ||
6876 | /* If we got a notification, handle it, and go back to looking | |
6877 | for an ack. */ | |
6878 | /* We've found the start of a notification. Now | |
6879 | collect the data. */ | |
6880 | val = read_frame (&rs->buf, &rs->buf_size); | |
6881 | if (val >= 0) | |
6882 | { | |
6883 | if (remote_debug) | |
6884 | { | |
6e5abd65 PA |
6885 | struct cleanup *old_chain; |
6886 | char *str; | |
6887 | ||
6888 | str = escape_buffer (rs->buf, val); | |
6889 | old_chain = make_cleanup (xfree, str); | |
6890 | fprintf_unfiltered (gdb_stdlog, | |
6891 | " Notification received: %s\n", | |
6892 | str); | |
6893 | do_cleanups (old_chain); | |
74531fed PA |
6894 | } |
6895 | handle_notification (rs->buf, val); | |
6896 | /* We're in sync now, rewait for the ack. */ | |
6897 | tcount = 0; | |
6898 | } | |
6899 | else | |
6900 | { | |
6901 | if (remote_debug) | |
6902 | { | |
6903 | if (!started_error_output) | |
6904 | { | |
6905 | started_error_output = 1; | |
6906 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
6907 | } | |
6908 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
6909 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
6910 | } | |
6911 | } | |
6912 | continue; | |
6913 | } | |
6914 | /* fall-through */ | |
c906108c SS |
6915 | default: |
6916 | if (remote_debug) | |
6917 | { | |
6918 | if (!started_error_output) | |
6919 | { | |
6920 | started_error_output = 1; | |
0f71a2f6 | 6921 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 6922 | } |
0f71a2f6 | 6923 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
6924 | } |
6925 | continue; | |
6926 | } | |
23860348 | 6927 | break; /* Here to retransmit. */ |
c906108c SS |
6928 | } |
6929 | ||
6930 | #if 0 | |
6931 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
6932 | able to get out next time we call QUIT, without anything as |
6933 | violent as interrupt_query. If we want to provide a way out of | |
6934 | here without getting to the next QUIT, it should be based on | |
6935 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
6936 | if (quit_flag) |
6937 | { | |
6938 | quit_flag = 0; | |
6939 | interrupt_query (); | |
6940 | } | |
6941 | #endif | |
6942 | } | |
a6f3e723 | 6943 | return 0; |
c906108c SS |
6944 | } |
6945 | ||
6d820c5c DJ |
6946 | /* Come here after finding the start of a frame when we expected an |
6947 | ack. Do our best to discard the rest of this packet. */ | |
6948 | ||
6949 | static void | |
6950 | skip_frame (void) | |
6951 | { | |
6952 | int c; | |
6953 | ||
6954 | while (1) | |
6955 | { | |
6956 | c = readchar (remote_timeout); | |
6957 | switch (c) | |
6958 | { | |
6959 | case SERIAL_TIMEOUT: | |
6960 | /* Nothing we can do. */ | |
6961 | return; | |
6962 | case '#': | |
6963 | /* Discard the two bytes of checksum and stop. */ | |
6964 | c = readchar (remote_timeout); | |
6965 | if (c >= 0) | |
6966 | c = readchar (remote_timeout); | |
6967 | ||
6968 | return; | |
6969 | case '*': /* Run length encoding. */ | |
6970 | /* Discard the repeat count. */ | |
6971 | c = readchar (remote_timeout); | |
6972 | if (c < 0) | |
6973 | return; | |
6974 | break; | |
6975 | default: | |
6976 | /* A regular character. */ | |
6977 | break; | |
6978 | } | |
6979 | } | |
6980 | } | |
6981 | ||
c906108c | 6982 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
6983 | into *BUF, verifying the checksum, length, and handling run-length |
6984 | compression. NUL terminate the buffer. If there is not enough room, | |
6985 | expand *BUF using xrealloc. | |
c906108c | 6986 | |
c2d11a7d JM |
6987 | Returns -1 on error, number of characters in buffer (ignoring the |
6988 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 6989 | SERIAL status indications). */ |
c2d11a7d JM |
6990 | |
6991 | static long | |
6d820c5c DJ |
6992 | read_frame (char **buf_p, |
6993 | long *sizeof_buf) | |
c906108c SS |
6994 | { |
6995 | unsigned char csum; | |
c2d11a7d | 6996 | long bc; |
c906108c | 6997 | int c; |
6d820c5c | 6998 | char *buf = *buf_p; |
a6f3e723 | 6999 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7000 | |
7001 | csum = 0; | |
c2d11a7d | 7002 | bc = 0; |
c906108c SS |
7003 | |
7004 | while (1) | |
7005 | { | |
7006 | c = readchar (remote_timeout); | |
c906108c SS |
7007 | switch (c) |
7008 | { | |
7009 | case SERIAL_TIMEOUT: | |
7010 | if (remote_debug) | |
0f71a2f6 | 7011 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 7012 | return -1; |
c906108c SS |
7013 | case '$': |
7014 | if (remote_debug) | |
0f71a2f6 JM |
7015 | fputs_filtered ("Saw new packet start in middle of old one\n", |
7016 | gdb_stdlog); | |
23860348 | 7017 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
7018 | case '#': |
7019 | { | |
7020 | unsigned char pktcsum; | |
e1b09194 AC |
7021 | int check_0 = 0; |
7022 | int check_1 = 0; | |
c906108c | 7023 | |
c2d11a7d | 7024 | buf[bc] = '\0'; |
c906108c | 7025 | |
e1b09194 AC |
7026 | check_0 = readchar (remote_timeout); |
7027 | if (check_0 >= 0) | |
7028 | check_1 = readchar (remote_timeout); | |
802188a7 | 7029 | |
e1b09194 AC |
7030 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
7031 | { | |
7032 | if (remote_debug) | |
2bc416ba | 7033 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 7034 | gdb_stdlog); |
e1b09194 AC |
7035 | return -1; |
7036 | } | |
7037 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
7038 | { |
7039 | if (remote_debug) | |
2bc416ba | 7040 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 7041 | gdb_stdlog); |
40e3f985 FN |
7042 | return -1; |
7043 | } | |
c906108c | 7044 | |
a6f3e723 SL |
7045 | /* Don't recompute the checksum; with no ack packets we |
7046 | don't have any way to indicate a packet retransmission | |
7047 | is necessary. */ | |
7048 | if (rs->noack_mode) | |
7049 | return bc; | |
7050 | ||
e1b09194 | 7051 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 7052 | if (csum == pktcsum) |
c2d11a7d | 7053 | return bc; |
c906108c | 7054 | |
c5aa993b | 7055 | if (remote_debug) |
c906108c | 7056 | { |
6e5abd65 PA |
7057 | struct cleanup *old_chain; |
7058 | char *str; | |
7059 | ||
7060 | str = escape_buffer (buf, bc); | |
7061 | old_chain = make_cleanup (xfree, str); | |
7062 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
7063 | "Bad checksum, sentsum=0x%x, " |
7064 | "csum=0x%x, buf=%s\n", | |
6e5abd65 PA |
7065 | pktcsum, csum, str); |
7066 | do_cleanups (old_chain); | |
c906108c | 7067 | } |
c2d11a7d | 7068 | /* Number of characters in buffer ignoring trailing |
23860348 | 7069 | NULL. */ |
c2d11a7d | 7070 | return -1; |
c906108c | 7071 | } |
23860348 | 7072 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
7073 | { |
7074 | int repeat; | |
c906108c | 7075 | |
a744cf53 | 7076 | csum += c; |
b4501125 AC |
7077 | c = readchar (remote_timeout); |
7078 | csum += c; | |
23860348 | 7079 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 7080 | |
23860348 | 7081 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 7082 | |
6d820c5c | 7083 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 7084 | { |
6d820c5c DJ |
7085 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
7086 | { | |
7087 | /* Make some more room in the buffer. */ | |
7088 | *sizeof_buf += repeat; | |
7089 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7090 | buf = *buf_p; | |
7091 | } | |
7092 | ||
c2d11a7d JM |
7093 | memset (&buf[bc], buf[bc - 1], repeat); |
7094 | bc += repeat; | |
c2c6d25f JM |
7095 | continue; |
7096 | } | |
7097 | ||
c2d11a7d | 7098 | buf[bc] = '\0'; |
6d820c5c | 7099 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 7100 | return -1; |
c2c6d25f | 7101 | } |
c906108c | 7102 | default: |
6d820c5c | 7103 | if (bc >= *sizeof_buf - 1) |
c906108c | 7104 | { |
6d820c5c DJ |
7105 | /* Make some more room in the buffer. */ |
7106 | *sizeof_buf *= 2; | |
7107 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
7108 | buf = *buf_p; | |
c906108c SS |
7109 | } |
7110 | ||
6d820c5c DJ |
7111 | buf[bc++] = c; |
7112 | csum += c; | |
7113 | continue; | |
c906108c SS |
7114 | } |
7115 | } | |
7116 | } | |
7117 | ||
7118 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7119 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7120 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7121 | rather than timing out; this is used (in synchronous mode) to wait | |
7122 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
7123 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
7124 | don't have to change all the calls to getpkt to deal with the | |
7125 | return value, because at the moment I don't know what the right | |
23860348 | 7126 | thing to do it for those. */ |
c906108c | 7127 | void |
6d820c5c DJ |
7128 | getpkt (char **buf, |
7129 | long *sizeof_buf, | |
c2d11a7d | 7130 | int forever) |
d9fcf2fb JM |
7131 | { |
7132 | int timed_out; | |
7133 | ||
7134 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
7135 | } | |
7136 | ||
7137 | ||
7138 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
7139 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
7140 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
7141 | rather than timing out; this is used (in synchronous mode) to wait | |
7142 | for a target that is is executing user code to stop. If FOREVER == | |
7143 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
7144 | indication of this to the caller. Otherwise return the number of |
7145 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
7146 | enough reason to return to the caller. */ | |
7147 | ||
3172dc30 | 7148 | static int |
74531fed PA |
7149 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
7150 | int expecting_notif) | |
c906108c | 7151 | { |
2d717e4f | 7152 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7153 | int c; |
7154 | int tries; | |
7155 | int timeout; | |
df4b58fe | 7156 | int val = -1; |
c906108c | 7157 | |
2d717e4f DJ |
7158 | /* We're reading a new response. Make sure we don't look at a |
7159 | previously cached response. */ | |
7160 | rs->cached_wait_status = 0; | |
7161 | ||
6d820c5c | 7162 | strcpy (*buf, "timeout"); |
c906108c SS |
7163 | |
7164 | if (forever) | |
74531fed PA |
7165 | timeout = watchdog > 0 ? watchdog : -1; |
7166 | else if (expecting_notif) | |
7167 | timeout = 0; /* There should already be a char in the buffer. If | |
7168 | not, bail out. */ | |
c906108c SS |
7169 | else |
7170 | timeout = remote_timeout; | |
7171 | ||
7172 | #define MAX_TRIES 3 | |
7173 | ||
74531fed PA |
7174 | /* Process any number of notifications, and then return when |
7175 | we get a packet. */ | |
7176 | for (;;) | |
c906108c | 7177 | { |
74531fed PA |
7178 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
7179 | times. */ | |
7180 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 7181 | { |
74531fed PA |
7182 | /* This can loop forever if the remote side sends us |
7183 | characters continuously, but if it pauses, we'll get | |
7184 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
7185 | we'll count that as a retry. | |
7186 | ||
7187 | Note that even when forever is set, we will only wait | |
7188 | forever prior to the start of a packet. After that, we | |
7189 | expect characters to arrive at a brisk pace. They should | |
7190 | show up within remote_timeout intervals. */ | |
7191 | do | |
7192 | c = readchar (timeout); | |
7193 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
7194 | |
7195 | if (c == SERIAL_TIMEOUT) | |
7196 | { | |
74531fed PA |
7197 | if (expecting_notif) |
7198 | return -1; /* Don't complain, it's normal to not get | |
7199 | anything in this case. */ | |
7200 | ||
23860348 | 7201 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 7202 | { |
2acceee2 | 7203 | QUIT; |
ce5ce7ed | 7204 | pop_target (); |
489eaeba | 7205 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 7206 | } |
c906108c | 7207 | if (remote_debug) |
0f71a2f6 | 7208 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 7209 | } |
74531fed PA |
7210 | else |
7211 | { | |
7212 | /* We've found the start of a packet or notification. | |
7213 | Now collect the data. */ | |
7214 | val = read_frame (buf, sizeof_buf); | |
7215 | if (val >= 0) | |
7216 | break; | |
7217 | } | |
7218 | ||
7219 | serial_write (remote_desc, "-", 1); | |
c906108c | 7220 | } |
c906108c | 7221 | |
74531fed PA |
7222 | if (tries > MAX_TRIES) |
7223 | { | |
7224 | /* We have tried hard enough, and just can't receive the | |
7225 | packet/notification. Give up. */ | |
7226 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 7227 | |
74531fed PA |
7228 | /* Skip the ack char if we're in no-ack mode. */ |
7229 | if (!rs->noack_mode) | |
7230 | serial_write (remote_desc, "+", 1); | |
7231 | return -1; | |
7232 | } | |
c906108c | 7233 | |
74531fed PA |
7234 | /* If we got an ordinary packet, return that to our caller. */ |
7235 | if (c == '$') | |
c906108c SS |
7236 | { |
7237 | if (remote_debug) | |
43e526b9 | 7238 | { |
6e5abd65 PA |
7239 | struct cleanup *old_chain; |
7240 | char *str; | |
7241 | ||
7242 | str = escape_buffer (*buf, val); | |
7243 | old_chain = make_cleanup (xfree, str); | |
7244 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
7245 | do_cleanups (old_chain); | |
43e526b9 | 7246 | } |
a6f3e723 SL |
7247 | |
7248 | /* Skip the ack char if we're in no-ack mode. */ | |
7249 | if (!rs->noack_mode) | |
7250 | serial_write (remote_desc, "+", 1); | |
0876f84a | 7251 | return val; |
c906108c SS |
7252 | } |
7253 | ||
74531fed PA |
7254 | /* If we got a notification, handle it, and go back to looking |
7255 | for a packet. */ | |
7256 | else | |
7257 | { | |
7258 | gdb_assert (c == '%'); | |
7259 | ||
7260 | if (remote_debug) | |
7261 | { | |
6e5abd65 PA |
7262 | struct cleanup *old_chain; |
7263 | char *str; | |
7264 | ||
7265 | str = escape_buffer (*buf, val); | |
7266 | old_chain = make_cleanup (xfree, str); | |
7267 | fprintf_unfiltered (gdb_stdlog, | |
7268 | " Notification received: %s\n", | |
7269 | str); | |
7270 | do_cleanups (old_chain); | |
74531fed | 7271 | } |
c906108c | 7272 | |
74531fed | 7273 | handle_notification (*buf, val); |
c906108c | 7274 | |
74531fed | 7275 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 7276 | |
74531fed PA |
7277 | if (expecting_notif) |
7278 | return -1; | |
7279 | } | |
7280 | } | |
7281 | } | |
7282 | ||
7283 | static int | |
7284 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
7285 | { | |
7286 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
7287 | } | |
7288 | ||
7289 | static int | |
7290 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
7291 | { | |
7292 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 7293 | } |
74531fed | 7294 | |
c906108c SS |
7295 | \f |
7296 | static void | |
7d85a9c0 | 7297 | remote_kill (struct target_ops *ops) |
43ff13b4 | 7298 | { |
23860348 MS |
7299 | /* Use catch_errors so the user can quit from gdb even when we |
7300 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 7301 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
7302 | |
7303 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7304 | we do or not. For the existing stubs, kill is a noop. */ | |
7305 | target_mourn_inferior (); | |
7306 | } | |
7307 | ||
82f73884 PA |
7308 | static int |
7309 | remote_vkill (int pid, struct remote_state *rs) | |
7310 | { | |
7311 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7312 | return -1; | |
7313 | ||
7314 | /* Tell the remote target to detach. */ | |
7315 | sprintf (rs->buf, "vKill;%x", pid); | |
7316 | putpkt (rs->buf); | |
7317 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7318 | ||
7319 | if (packet_ok (rs->buf, | |
7320 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
7321 | return 0; | |
7322 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
7323 | return -1; | |
7324 | else | |
7325 | return 1; | |
7326 | } | |
7327 | ||
7328 | static void | |
7d85a9c0 | 7329 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
7330 | { |
7331 | int res; | |
7332 | int pid = ptid_get_pid (inferior_ptid); | |
7333 | struct remote_state *rs = get_remote_state (); | |
7334 | ||
7335 | res = remote_vkill (pid, rs); | |
7336 | if (res == -1 && !remote_multi_process_p (rs)) | |
7337 | { | |
7338 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
7339 | to specify the pid. */ | |
7340 | ||
7341 | putpkt ("k"); | |
7342 | #if 0 | |
7343 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7344 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
7345 | res = 1; | |
7346 | #else | |
7347 | /* Don't wait for it to die. I'm not really sure it matters whether | |
7348 | we do or not. For the existing stubs, kill is a noop. */ | |
7349 | res = 0; | |
7350 | #endif | |
7351 | } | |
7352 | ||
7353 | if (res != 0) | |
7354 | error (_("Can't kill process")); | |
7355 | ||
82f73884 PA |
7356 | target_mourn_inferior (); |
7357 | } | |
7358 | ||
c906108c | 7359 | static void |
136d6dae | 7360 | remote_mourn (struct target_ops *ops) |
c906108c | 7361 | { |
136d6dae | 7362 | remote_mourn_1 (ops); |
c906108c SS |
7363 | } |
7364 | ||
c906108c SS |
7365 | /* Worker function for remote_mourn. */ |
7366 | static void | |
fba45db2 | 7367 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
7368 | { |
7369 | unpush_target (target); | |
ce5ce7ed | 7370 | |
8a2492ee PA |
7371 | /* remote_close takes care of doing most of the clean up. */ |
7372 | generic_mourn_inferior (); | |
c906108c SS |
7373 | } |
7374 | ||
2d717e4f DJ |
7375 | static void |
7376 | extended_remote_mourn_1 (struct target_ops *target) | |
7377 | { | |
7378 | struct remote_state *rs = get_remote_state (); | |
c906108c | 7379 | |
e24a49d8 PA |
7380 | /* In case we got here due to an error, but we're going to stay |
7381 | connected. */ | |
7382 | rs->waiting_for_stop_reply = 0; | |
7383 | ||
74531fed PA |
7384 | /* We're no longer interested in these events. */ |
7385 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
7386 | ||
dc1981d7 PA |
7387 | /* If the current general thread belonged to the process we just |
7388 | detached from or has exited, the remote side current general | |
7389 | thread becomes undefined. Considering a case like this: | |
7390 | ||
7391 | - We just got here due to a detach. | |
7392 | - The process that we're detaching from happens to immediately | |
7393 | report a global breakpoint being hit in non-stop mode, in the | |
7394 | same thread we had selected before. | |
7395 | - GDB attaches to this process again. | |
7396 | - This event happens to be the next event we handle. | |
7397 | ||
7398 | GDB would consider that the current general thread didn't need to | |
7399 | be set on the stub side (with Hg), since for all it knew, | |
7400 | GENERAL_THREAD hadn't changed. | |
7401 | ||
7402 | Notice that although in all-stop mode, the remote server always | |
7403 | sets the current thread to the thread reporting the stop event, | |
7404 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
7405 | not* change the current thread when reporting a breakpoint hit, | |
7406 | due to the decoupling of event reporting and event handling. | |
7407 | ||
7408 | To keep things simple, we always invalidate our notion of the | |
7409 | current thread. */ | |
7410 | record_currthread (minus_one_ptid); | |
7411 | ||
2d717e4f DJ |
7412 | /* Unlike "target remote", we do not want to unpush the target; then |
7413 | the next time the user says "run", we won't be connected. */ | |
7414 | ||
48aa3c27 PA |
7415 | /* Call common code to mark the inferior as not running. */ |
7416 | generic_mourn_inferior (); | |
7417 | ||
d729566a | 7418 | if (!have_inferiors ()) |
2d717e4f | 7419 | { |
82f73884 PA |
7420 | if (!remote_multi_process_p (rs)) |
7421 | { | |
7422 | /* Check whether the target is running now - some remote stubs | |
7423 | automatically restart after kill. */ | |
7424 | putpkt ("?"); | |
7425 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7426 | ||
7427 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
7428 | { | |
3e43a32a MS |
7429 | /* Assume that the target has been restarted. Set |
7430 | inferior_ptid so that bits of core GDB realizes | |
7431 | there's something here, e.g., so that the user can | |
7432 | say "kill" again. */ | |
82f73884 PA |
7433 | inferior_ptid = magic_null_ptid; |
7434 | } | |
82f73884 | 7435 | } |
2d717e4f DJ |
7436 | } |
7437 | } | |
c906108c SS |
7438 | |
7439 | static void | |
136d6dae | 7440 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 7441 | { |
136d6dae | 7442 | extended_remote_mourn_1 (ops); |
2d717e4f | 7443 | } |
c906108c | 7444 | |
2d717e4f DJ |
7445 | static int |
7446 | extended_remote_run (char *args) | |
7447 | { | |
7448 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 7449 | int len; |
c906108c | 7450 | |
2d717e4f DJ |
7451 | /* If the user has disabled vRun support, or we have detected that |
7452 | support is not available, do not try it. */ | |
7453 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7454 | return -1; | |
424163ea | 7455 | |
2d717e4f DJ |
7456 | strcpy (rs->buf, "vRun;"); |
7457 | len = strlen (rs->buf); | |
c906108c | 7458 | |
2d717e4f DJ |
7459 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
7460 | error (_("Remote file name too long for run packet")); | |
7461 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
7462 | ||
d1a41061 | 7463 | gdb_assert (args != NULL); |
2d717e4f DJ |
7464 | if (*args) |
7465 | { | |
7466 | struct cleanup *back_to; | |
7467 | int i; | |
7468 | char **argv; | |
7469 | ||
d1a41061 | 7470 | argv = gdb_buildargv (args); |
2d717e4f DJ |
7471 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
7472 | for (i = 0; argv[i] != NULL; i++) | |
7473 | { | |
7474 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
7475 | error (_("Argument list too long for run packet")); | |
7476 | rs->buf[len++] = ';'; | |
7477 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
7478 | } | |
7479 | do_cleanups (back_to); | |
7480 | } | |
7481 | ||
7482 | rs->buf[len++] = '\0'; | |
7483 | ||
7484 | putpkt (rs->buf); | |
7485 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7486 | ||
7487 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
7488 | { | |
7489 | /* We have a wait response; we don't need it, though. All is well. */ | |
7490 | return 0; | |
7491 | } | |
7492 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
7493 | /* It wasn't disabled before, but it is now. */ | |
7494 | return -1; | |
7495 | else | |
7496 | { | |
7497 | if (remote_exec_file[0] == '\0') | |
7498 | error (_("Running the default executable on the remote target failed; " | |
7499 | "try \"set remote exec-file\"?")); | |
7500 | else | |
7501 | error (_("Running \"%s\" on the remote target failed"), | |
7502 | remote_exec_file); | |
7503 | } | |
c906108c SS |
7504 | } |
7505 | ||
2d717e4f DJ |
7506 | /* In the extended protocol we want to be able to do things like |
7507 | "run" and have them basically work as expected. So we need | |
7508 | a special create_inferior function. We support changing the | |
7509 | executable file and the command line arguments, but not the | |
7510 | environment. */ | |
7511 | ||
43ff13b4 | 7512 | static void |
2d717e4f | 7513 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 7514 | char **env, int from_tty) |
43ff13b4 | 7515 | { |
43ff13b4 | 7516 | /* If running asynchronously, register the target file descriptor |
23860348 | 7517 | with the event loop. */ |
75c99385 | 7518 | if (target_can_async_p ()) |
2acceee2 | 7519 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
7520 | |
7521 | /* Now restart the remote server. */ | |
2d717e4f DJ |
7522 | if (extended_remote_run (args) == -1) |
7523 | { | |
7524 | /* vRun was not supported. Fail if we need it to do what the | |
7525 | user requested. */ | |
7526 | if (remote_exec_file[0]) | |
7527 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7528 | if (args[0]) | |
7529 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 7530 | |
2d717e4f DJ |
7531 | /* Fall back to "R". */ |
7532 | extended_remote_restart (); | |
7533 | } | |
424163ea | 7534 | |
6c95b8df PA |
7535 | if (!have_inferiors ()) |
7536 | { | |
7537 | /* Clean up from the last time we ran, before we mark the target | |
7538 | running again. This will mark breakpoints uninserted, and | |
7539 | get_offsets may insert breakpoints. */ | |
7540 | init_thread_list (); | |
7541 | init_wait_for_inferior (); | |
7542 | } | |
45280a52 | 7543 | |
2d717e4f | 7544 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 7545 | inferior_ptid = magic_null_ptid; |
c0a2216e | 7546 | |
74531fed PA |
7547 | /* Now, if we have thread information, update inferior_ptid. */ |
7548 | inferior_ptid = remote_current_thread (inferior_ptid); | |
7549 | ||
0b16c5cf | 7550 | remote_add_inferior (ptid_get_pid (inferior_ptid), 0); |
c0a2216e PA |
7551 | add_thread_silent (inferior_ptid); |
7552 | ||
2d717e4f DJ |
7553 | /* Get updated offsets, if the stub uses qOffsets. */ |
7554 | get_offsets (); | |
2d717e4f DJ |
7555 | } |
7556 | ||
7557 | static void | |
136d6dae VP |
7558 | extended_remote_create_inferior (struct target_ops *ops, |
7559 | char *exec_file, char *args, | |
2d717e4f DJ |
7560 | char **env, int from_tty) |
7561 | { | |
75c99385 | 7562 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 7563 | } |
c906108c | 7564 | \f |
c5aa993b | 7565 | |
8181d85f DJ |
7566 | /* Insert a breakpoint. On targets that have software breakpoint |
7567 | support, we ask the remote target to do the work; on targets | |
7568 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
7569 | |
7570 | static int | |
a6d9a66e UW |
7571 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
7572 | struct bp_target_info *bp_tgt) | |
c906108c | 7573 | { |
d471ea57 AC |
7574 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
7575 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
7576 | fails, and the user has explicitly requested the Z support then | |
23860348 | 7577 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 7578 | |
444abaca | 7579 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7580 | { |
7c0f6dcc | 7581 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
7582 | struct remote_state *rs; |
7583 | char *p; | |
7c0f6dcc | 7584 | int bpsize; |
4fff2411 | 7585 | |
a1dcb23a | 7586 | gdbarch_remote_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
7587 | |
7588 | rs = get_remote_state (); | |
7589 | p = rs->buf; | |
802188a7 | 7590 | |
96baa820 JM |
7591 | *(p++) = 'Z'; |
7592 | *(p++) = '0'; | |
7593 | *(p++) = ','; | |
7c0f6dcc | 7594 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 7595 | p += hexnumstr (p, addr); |
7c0f6dcc | 7596 | sprintf (p, ",%d", bpsize); |
802188a7 | 7597 | |
6d820c5c DJ |
7598 | putpkt (rs->buf); |
7599 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7600 | |
6d820c5c | 7601 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 7602 | { |
d471ea57 AC |
7603 | case PACKET_ERROR: |
7604 | return -1; | |
7605 | case PACKET_OK: | |
7c0f6dcc JL |
7606 | bp_tgt->placed_address = addr; |
7607 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
7608 | return 0; |
7609 | case PACKET_UNKNOWN: | |
7610 | break; | |
96baa820 JM |
7611 | } |
7612 | } | |
c906108c | 7613 | |
a6d9a66e | 7614 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7615 | } |
7616 | ||
7617 | static int | |
a6d9a66e UW |
7618 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
7619 | struct bp_target_info *bp_tgt) | |
c906108c | 7620 | { |
8181d85f | 7621 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 7622 | struct remote_state *rs = get_remote_state (); |
96baa820 | 7623 | |
444abaca | 7624 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 7625 | { |
6d820c5c | 7626 | char *p = rs->buf; |
802188a7 | 7627 | |
96baa820 JM |
7628 | *(p++) = 'z'; |
7629 | *(p++) = '0'; | |
7630 | *(p++) = ','; | |
7631 | ||
8181d85f DJ |
7632 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
7633 | p += hexnumstr (p, addr); | |
7634 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 7635 | |
6d820c5c DJ |
7636 | putpkt (rs->buf); |
7637 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7638 | |
6d820c5c | 7639 | return (rs->buf[0] == 'E'); |
96baa820 JM |
7640 | } |
7641 | ||
a6d9a66e | 7642 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
7643 | } |
7644 | ||
d471ea57 AC |
7645 | static int |
7646 | watchpoint_to_Z_packet (int type) | |
7647 | { | |
7648 | switch (type) | |
7649 | { | |
7650 | case hw_write: | |
bb858e6a | 7651 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
7652 | break; |
7653 | case hw_read: | |
bb858e6a | 7654 | return Z_PACKET_READ_WP; |
d471ea57 AC |
7655 | break; |
7656 | case hw_access: | |
bb858e6a | 7657 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
7658 | break; |
7659 | default: | |
8e65ff28 | 7660 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7661 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
7662 | } |
7663 | } | |
7664 | ||
3c3bea1c | 7665 | static int |
0cf6dd15 TJB |
7666 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type, |
7667 | struct expression *cond) | |
96baa820 | 7668 | { |
d01949b6 | 7669 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 7670 | char *p; |
d471ea57 | 7671 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 7672 | |
444abaca | 7673 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
85d721b8 | 7674 | return 1; |
802188a7 | 7675 | |
6d820c5c DJ |
7676 | sprintf (rs->buf, "Z%x,", packet); |
7677 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
7678 | addr = remote_address_masked (addr); |
7679 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 7680 | sprintf (p, ",%x", len); |
802188a7 | 7681 | |
6d820c5c DJ |
7682 | putpkt (rs->buf); |
7683 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7684 | |
6d820c5c | 7685 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7686 | { |
7687 | case PACKET_ERROR: | |
d471ea57 | 7688 | return -1; |
85d721b8 PA |
7689 | case PACKET_UNKNOWN: |
7690 | return 1; | |
d471ea57 AC |
7691 | case PACKET_OK: |
7692 | return 0; | |
7693 | } | |
8e65ff28 | 7694 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7695 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
7696 | } |
7697 | ||
d471ea57 | 7698 | |
3c3bea1c | 7699 | static int |
0cf6dd15 TJB |
7700 | remote_remove_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 AC |
7705 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
7706 | ||
444abaca | 7707 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 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); |
6d820c5c DJ |
7715 | putpkt (rs->buf); |
7716 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7717 | |
6d820c5c | 7718 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
7719 | { |
7720 | case PACKET_ERROR: | |
7721 | case PACKET_UNKNOWN: | |
7722 | return -1; | |
7723 | case PACKET_OK: | |
7724 | return 0; | |
7725 | } | |
8e65ff28 | 7726 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7727 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
7728 | } |
7729 | ||
3c3bea1c | 7730 | |
501eef12 AC |
7731 | int remote_hw_watchpoint_limit = -1; |
7732 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 7733 | |
b9362cc7 | 7734 | static int |
3c3bea1c | 7735 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 7736 | { |
3c3bea1c GS |
7737 | if (type == bp_hardware_breakpoint) |
7738 | { | |
7739 | if (remote_hw_breakpoint_limit == 0) | |
7740 | return 0; | |
501eef12 AC |
7741 | else if (remote_hw_breakpoint_limit < 0) |
7742 | return 1; | |
3c3bea1c GS |
7743 | else if (cnt <= remote_hw_breakpoint_limit) |
7744 | return 1; | |
7745 | } | |
7746 | else | |
7747 | { | |
7748 | if (remote_hw_watchpoint_limit == 0) | |
7749 | return 0; | |
501eef12 AC |
7750 | else if (remote_hw_watchpoint_limit < 0) |
7751 | return 1; | |
3c3bea1c GS |
7752 | else if (ot) |
7753 | return -1; | |
7754 | else if (cnt <= remote_hw_watchpoint_limit) | |
7755 | return 1; | |
7756 | } | |
7757 | return -1; | |
7758 | } | |
7759 | ||
b9362cc7 | 7760 | static int |
3c3bea1c GS |
7761 | remote_stopped_by_watchpoint (void) |
7762 | { | |
82f73884 | 7763 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7764 | } |
7765 | ||
4aa7a7f5 JJ |
7766 | static int |
7767 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7768 | { |
4aa7a7f5 | 7769 | int rc = 0; |
a744cf53 | 7770 | |
d983da9c | 7771 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7772 | { |
7773 | *addr_p = remote_watch_data_address; | |
7774 | rc = 1; | |
7775 | } | |
7776 | ||
7777 | return rc; | |
3c3bea1c GS |
7778 | } |
7779 | ||
7780 | ||
7781 | static int | |
a6d9a66e UW |
7782 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
7783 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 7784 | { |
8181d85f | 7785 | CORE_ADDR addr; |
4fff2411 JZ |
7786 | struct remote_state *rs; |
7787 | char *p; | |
802188a7 | 7788 | |
c8189ed1 | 7789 | /* The length field should be set to the size of a breakpoint |
8181d85f | 7790 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 7791 | |
a1dcb23a | 7792 | gdbarch_remote_breakpoint_from_pc |
a6d9a66e | 7793 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 7794 | |
444abaca | 7795 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7796 | return -1; |
2bc416ba | 7797 | |
4fff2411 JZ |
7798 | rs = get_remote_state (); |
7799 | p = rs->buf; | |
7800 | ||
96baa820 JM |
7801 | *(p++) = 'Z'; |
7802 | *(p++) = '1'; | |
7803 | *(p++) = ','; | |
802188a7 | 7804 | |
8181d85f | 7805 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7806 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7807 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7808 | |
6d820c5c DJ |
7809 | putpkt (rs->buf); |
7810 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7811 | |
6d820c5c | 7812 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7813 | { |
7814 | case PACKET_ERROR: | |
7815 | case PACKET_UNKNOWN: | |
7816 | return -1; | |
7817 | case PACKET_OK: | |
7818 | return 0; | |
7819 | } | |
8e65ff28 | 7820 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7821 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
7822 | } |
7823 | ||
d471ea57 | 7824 | |
802188a7 | 7825 | static int |
a6d9a66e UW |
7826 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
7827 | struct bp_target_info *bp_tgt) | |
96baa820 | 7828 | { |
8181d85f | 7829 | CORE_ADDR addr; |
d01949b6 | 7830 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 7831 | char *p = rs->buf; |
c8189ed1 | 7832 | |
444abaca | 7833 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7834 | return -1; |
802188a7 | 7835 | |
96baa820 JM |
7836 | *(p++) = 'z'; |
7837 | *(p++) = '1'; | |
7838 | *(p++) = ','; | |
802188a7 | 7839 | |
8181d85f | 7840 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7841 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7842 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7843 | |
6d820c5c DJ |
7844 | putpkt (rs->buf); |
7845 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 7846 | |
6d820c5c | 7847 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7848 | { |
7849 | case PACKET_ERROR: | |
7850 | case PACKET_UNKNOWN: | |
7851 | return -1; | |
7852 | case PACKET_OK: | |
7853 | return 0; | |
7854 | } | |
8e65ff28 | 7855 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7856 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 7857 | } |
96baa820 | 7858 | |
23860348 | 7859 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 7860 | |
c5aa993b JM |
7861 | static unsigned long crc32_table[256] = |
7862 | {0, 0}; | |
c906108c SS |
7863 | |
7864 | static unsigned long | |
4a5e7a5b | 7865 | crc32 (const unsigned char *buf, int len, unsigned int crc) |
c906108c | 7866 | { |
c5aa993b | 7867 | if (!crc32_table[1]) |
c906108c | 7868 | { |
23860348 | 7869 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
7870 | int i, j; |
7871 | unsigned int c; | |
7872 | ||
7873 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
7874 | { |
7875 | for (c = i << 24, j = 8; j > 0; --j) | |
7876 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
7877 | crc32_table[i] = c; | |
7878 | } | |
c906108c SS |
7879 | } |
7880 | ||
7881 | while (len--) | |
7882 | { | |
7883 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
7884 | buf++; | |
7885 | } | |
7886 | return crc; | |
7887 | } | |
7888 | ||
4a5e7a5b PA |
7889 | /* Verify memory using the "qCRC:" request. */ |
7890 | ||
7891 | static int | |
7892 | remote_verify_memory (struct target_ops *ops, | |
7893 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
7894 | { | |
7895 | struct remote_state *rs = get_remote_state (); | |
7896 | unsigned long host_crc, target_crc; | |
7897 | char *tmp; | |
7898 | ||
7899 | /* FIXME: assumes lma can fit into long. */ | |
7900 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", | |
7901 | (long) lma, (long) size); | |
7902 | putpkt (rs->buf); | |
7903 | ||
7904 | /* Be clever; compute the host_crc before waiting for target | |
7905 | reply. */ | |
7906 | host_crc = crc32 (data, size, 0xffffffff); | |
7907 | ||
7908 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7909 | if (rs->buf[0] == 'E') | |
7910 | return -1; | |
7911 | ||
7912 | if (rs->buf[0] != 'C') | |
7913 | error (_("remote target does not support this operation")); | |
7914 | ||
7915 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
7916 | target_crc = target_crc * 16 + fromhex (*tmp); | |
7917 | ||
7918 | return (host_crc == target_crc); | |
7919 | } | |
7920 | ||
c906108c SS |
7921 | /* compare-sections command |
7922 | ||
7923 | With no arguments, compares each loadable section in the exec bfd | |
7924 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 7925 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 7926 | |
c906108c | 7927 | static void |
fba45db2 | 7928 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
7929 | { |
7930 | asection *s; | |
c906108c | 7931 | struct cleanup *old_chain; |
085dd6e6 | 7932 | char *sectdata; |
ce359b09 | 7933 | const char *sectname; |
c906108c SS |
7934 | bfd_size_type size; |
7935 | bfd_vma lma; | |
7936 | int matched = 0; | |
7937 | int mismatched = 0; | |
4a5e7a5b | 7938 | int res; |
c906108c SS |
7939 | |
7940 | if (!exec_bfd) | |
8a3fe4f8 | 7941 | error (_("command cannot be used without an exec file")); |
c906108c | 7942 | |
c5aa993b | 7943 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
7944 | { |
7945 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 7946 | continue; /* skip non-loadable section */ |
c906108c | 7947 | |
2c500098 | 7948 | size = bfd_get_section_size (s); |
c906108c | 7949 | if (size == 0) |
c5aa993b | 7950 | continue; /* skip zero-length section */ |
c906108c | 7951 | |
ce359b09 | 7952 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 7953 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 7954 | continue; /* not the section selected by user */ |
c906108c | 7955 | |
c5aa993b | 7956 | matched = 1; /* do this section */ |
c906108c | 7957 | lma = s->lma; |
c906108c | 7958 | |
c906108c | 7959 | sectdata = xmalloc (size); |
b8c9b27d | 7960 | old_chain = make_cleanup (xfree, sectdata); |
c906108c | 7961 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
c906108c | 7962 | |
4a5e7a5b PA |
7963 | res = target_verify_memory (sectdata, lma, size); |
7964 | ||
7965 | if (res == -1) | |
5af949e3 UW |
7966 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
7967 | paddress (target_gdbarch, lma), | |
7968 | paddress (target_gdbarch, lma + size)); | |
c906108c | 7969 | |
5af949e3 UW |
7970 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
7971 | paddress (target_gdbarch, lma), | |
7972 | paddress (target_gdbarch, lma + size)); | |
4a5e7a5b | 7973 | if (res) |
c906108c SS |
7974 | printf_filtered ("matched.\n"); |
7975 | else | |
c5aa993b JM |
7976 | { |
7977 | printf_filtered ("MIS-MATCHED!\n"); | |
7978 | mismatched++; | |
7979 | } | |
c906108c SS |
7980 | |
7981 | do_cleanups (old_chain); | |
7982 | } | |
7983 | if (mismatched > 0) | |
8a3fe4f8 AC |
7984 | warning (_("One or more sections of the remote executable does not match\n\ |
7985 | the loaded file\n")); | |
c906108c | 7986 | if (args && !matched) |
a3f17187 | 7987 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
7988 | } |
7989 | ||
0e7f50da UW |
7990 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
7991 | into remote target. The number of bytes written to the remote | |
7992 | target is returned, or -1 for error. */ | |
7993 | ||
7994 | static LONGEST | |
7995 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
7996 | const char *annex, const gdb_byte *writebuf, | |
7997 | ULONGEST offset, LONGEST len, | |
7998 | struct packet_config *packet) | |
7999 | { | |
8000 | int i, buf_len; | |
8001 | ULONGEST n; | |
0e7f50da UW |
8002 | struct remote_state *rs = get_remote_state (); |
8003 | int max_size = get_memory_write_packet_size (); | |
8004 | ||
8005 | if (packet->support == PACKET_DISABLE) | |
8006 | return -1; | |
8007 | ||
8008 | /* Insert header. */ | |
8009 | i = snprintf (rs->buf, max_size, | |
8010 | "qXfer:%s:write:%s:%s:", | |
8011 | object_name, annex ? annex : "", | |
8012 | phex_nz (offset, sizeof offset)); | |
8013 | max_size -= (i + 1); | |
8014 | ||
8015 | /* Escape as much data as fits into rs->buf. */ | |
8016 | buf_len = remote_escape_output | |
8017 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
8018 | ||
8019 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
8020 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8021 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8022 | return -1; | |
8023 | ||
8024 | unpack_varlen_hex (rs->buf, &n); | |
8025 | return n; | |
8026 | } | |
8027 | ||
0876f84a DJ |
8028 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
8029 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
8030 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
8031 | The number of bytes read may be less than LEN without indicating an | |
8032 | EOF. PACKET is checked and updated to indicate whether the remote | |
8033 | target supports this object. */ | |
8034 | ||
8035 | static LONGEST | |
8036 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
8037 | const char *annex, | |
8038 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
8039 | struct packet_config *packet) | |
8040 | { | |
8041 | static char *finished_object; | |
8042 | static char *finished_annex; | |
8043 | static ULONGEST finished_offset; | |
8044 | ||
8045 | struct remote_state *rs = get_remote_state (); | |
0876f84a DJ |
8046 | LONGEST i, n, packet_len; |
8047 | ||
8048 | if (packet->support == PACKET_DISABLE) | |
8049 | return -1; | |
8050 | ||
8051 | /* Check whether we've cached an end-of-object packet that matches | |
8052 | this request. */ | |
8053 | if (finished_object) | |
8054 | { | |
8055 | if (strcmp (object_name, finished_object) == 0 | |
8056 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
8057 | && offset == finished_offset) | |
8058 | return 0; | |
8059 | ||
8060 | /* Otherwise, we're now reading something different. Discard | |
8061 | the cache. */ | |
8062 | xfree (finished_object); | |
8063 | xfree (finished_annex); | |
8064 | finished_object = NULL; | |
8065 | finished_annex = NULL; | |
8066 | } | |
8067 | ||
8068 | /* Request only enough to fit in a single packet. The actual data | |
8069 | may not, since we don't know how much of it will need to be escaped; | |
8070 | the target is free to respond with slightly less data. We subtract | |
8071 | five to account for the response type and the protocol frame. */ | |
8072 | n = min (get_remote_packet_size () - 5, len); | |
8073 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
8074 | object_name, annex ? annex : "", | |
8075 | phex_nz (offset, sizeof offset), | |
8076 | phex_nz (n, sizeof n)); | |
8077 | i = putpkt (rs->buf); | |
8078 | if (i < 0) | |
8079 | return -1; | |
8080 | ||
8081 | rs->buf[0] = '\0'; | |
8082 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8083 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
8084 | return -1; | |
8085 | ||
8086 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8087 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
8088 | ||
8089 | /* 'm' means there is (or at least might be) more data after this | |
8090 | batch. That does not make sense unless there's at least one byte | |
8091 | of data in this reply. */ | |
8092 | if (rs->buf[0] == 'm' && packet_len == 1) | |
8093 | error (_("Remote qXfer reply contained no data.")); | |
8094 | ||
8095 | /* Got some data. */ | |
8096 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
8097 | ||
8098 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
8099 | or possibly empty. If we have the final block of a non-empty |
8100 | object, record this fact to bypass a subsequent partial read. */ | |
8101 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
8102 | { |
8103 | finished_object = xstrdup (object_name); | |
8104 | finished_annex = xstrdup (annex ? annex : ""); | |
8105 | finished_offset = offset + i; | |
8106 | } | |
8107 | ||
8108 | return i; | |
8109 | } | |
8110 | ||
1e3ff5ad | 8111 | static LONGEST |
4b8a223f | 8112 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
8113 | const char *annex, gdb_byte *readbuf, |
8114 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 8115 | { |
82f73884 | 8116 | struct remote_state *rs; |
c906108c | 8117 | int i; |
6d820c5c | 8118 | char *p2; |
1e3ff5ad | 8119 | char query_type; |
c906108c | 8120 | |
82f73884 PA |
8121 | set_general_thread (inferior_ptid); |
8122 | ||
8123 | rs = get_remote_state (); | |
8124 | ||
b2182ed2 | 8125 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
8126 | if (object == TARGET_OBJECT_MEMORY) |
8127 | { | |
8128 | int xfered; | |
a744cf53 | 8129 | |
21e3b9b9 DJ |
8130 | errno = 0; |
8131 | ||
2d717e4f DJ |
8132 | /* If the remote target is connected but not running, we should |
8133 | pass this request down to a lower stratum (e.g. the executable | |
8134 | file). */ | |
8135 | if (!target_has_execution) | |
8136 | return 0; | |
8137 | ||
21e3b9b9 | 8138 | if (writebuf != NULL) |
b2182ed2 | 8139 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 8140 | else |
b2182ed2 | 8141 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
8142 | |
8143 | if (xfered > 0) | |
8144 | return xfered; | |
8145 | else if (xfered == 0 && errno == 0) | |
8146 | return 0; | |
8147 | else | |
8148 | return -1; | |
8149 | } | |
8150 | ||
0e7f50da UW |
8151 | /* Handle SPU memory using qxfer packets. */ |
8152 | if (object == TARGET_OBJECT_SPU) | |
8153 | { | |
8154 | if (readbuf) | |
8155 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
8156 | &remote_protocol_packets | |
8157 | [PACKET_qXfer_spu_read]); | |
8158 | else | |
8159 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
8160 | &remote_protocol_packets | |
8161 | [PACKET_qXfer_spu_write]); | |
8162 | } | |
8163 | ||
4aa995e1 PA |
8164 | /* Handle extra signal info using qxfer packets. */ |
8165 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
8166 | { | |
8167 | if (readbuf) | |
8168 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
8169 | &remote_protocol_packets | |
8170 | [PACKET_qXfer_siginfo_read]); | |
8171 | else | |
3e43a32a MS |
8172 | return remote_write_qxfer (ops, "siginfo", annex, |
8173 | writebuf, offset, len, | |
4aa995e1 PA |
8174 | &remote_protocol_packets |
8175 | [PACKET_qXfer_siginfo_write]); | |
8176 | } | |
8177 | ||
0fb4aa4b PA |
8178 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
8179 | { | |
8180 | if (readbuf) | |
3e43a32a MS |
8181 | return remote_read_qxfer (ops, "statictrace", annex, |
8182 | readbuf, offset, len, | |
0fb4aa4b PA |
8183 | &remote_protocol_packets |
8184 | [PACKET_qXfer_statictrace_read]); | |
8185 | else | |
8186 | return -1; | |
8187 | } | |
8188 | ||
a76d924d DJ |
8189 | /* Only handle flash writes. */ |
8190 | if (writebuf != NULL) | |
8191 | { | |
8192 | LONGEST xfered; | |
8193 | ||
8194 | switch (object) | |
8195 | { | |
8196 | case TARGET_OBJECT_FLASH: | |
8197 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
8198 | ||
8199 | if (xfered > 0) | |
8200 | return xfered; | |
8201 | else if (xfered == 0 && errno == 0) | |
8202 | return 0; | |
8203 | else | |
8204 | return -1; | |
8205 | ||
8206 | default: | |
8207 | return -1; | |
8208 | } | |
8209 | } | |
4b8a223f | 8210 | |
1e3ff5ad AC |
8211 | /* Map pre-existing objects onto letters. DO NOT do this for new |
8212 | objects!!! Instead specify new query packets. */ | |
8213 | switch (object) | |
c906108c | 8214 | { |
1e3ff5ad AC |
8215 | case TARGET_OBJECT_AVR: |
8216 | query_type = 'R'; | |
8217 | break; | |
802188a7 RM |
8218 | |
8219 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
8220 | gdb_assert (annex == NULL); |
8221 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
8222 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 8223 | |
23181151 DJ |
8224 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
8225 | return remote_read_qxfer | |
8226 | (ops, "features", annex, readbuf, offset, len, | |
8227 | &remote_protocol_packets[PACKET_qXfer_features]); | |
8228 | ||
cfa9d6d9 DJ |
8229 | case TARGET_OBJECT_LIBRARIES: |
8230 | return remote_read_qxfer | |
8231 | (ops, "libraries", annex, readbuf, offset, len, | |
8232 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
8233 | ||
fd79ecee DJ |
8234 | case TARGET_OBJECT_MEMORY_MAP: |
8235 | gdb_assert (annex == NULL); | |
8236 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
8237 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
8238 | ||
07e059b5 VP |
8239 | case TARGET_OBJECT_OSDATA: |
8240 | /* Should only get here if we're connected. */ | |
8241 | gdb_assert (remote_desc); | |
8242 | return remote_read_qxfer | |
8243 | (ops, "osdata", annex, readbuf, offset, len, | |
8244 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
8245 | ||
dc146f7c VP |
8246 | case TARGET_OBJECT_THREADS: |
8247 | gdb_assert (annex == NULL); | |
8248 | return remote_read_qxfer (ops, "threads", annex, readbuf, offset, len, | |
8249 | &remote_protocol_packets[PACKET_qXfer_threads]); | |
8250 | ||
1e3ff5ad | 8251 | default: |
c906108c SS |
8252 | return -1; |
8253 | } | |
8254 | ||
4b8a223f | 8255 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 8256 | buffer size. */ |
4b8a223f | 8257 | if (offset == 0 && len == 0) |
ea9c271d DJ |
8258 | return (get_remote_packet_size ()); |
8259 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 8260 | large enough let the caller deal with it. */ |
ea9c271d | 8261 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 8262 | return -1; |
ea9c271d | 8263 | len = get_remote_packet_size (); |
1e3ff5ad | 8264 | |
23860348 | 8265 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 8266 | if (!remote_desc) |
8a3fe4f8 | 8267 | error (_("remote query is only available after target open")); |
c906108c | 8268 | |
1e3ff5ad | 8269 | gdb_assert (annex != NULL); |
4b8a223f | 8270 | gdb_assert (readbuf != NULL); |
c906108c | 8271 | |
6d820c5c | 8272 | p2 = rs->buf; |
c906108c SS |
8273 | *p2++ = 'q'; |
8274 | *p2++ = query_type; | |
8275 | ||
23860348 MS |
8276 | /* We used one buffer char for the remote protocol q command and |
8277 | another for the query type. As the remote protocol encapsulation | |
8278 | uses 4 chars plus one extra in case we are debugging | |
8279 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
8280 | string. */ | |
c906108c | 8281 | i = 0; |
ea9c271d | 8282 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 8283 | { |
1e3ff5ad AC |
8284 | /* Bad caller may have sent forbidden characters. */ |
8285 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
8286 | *p2++ = annex[i]; | |
c906108c SS |
8287 | i++; |
8288 | } | |
1e3ff5ad AC |
8289 | *p2 = '\0'; |
8290 | gdb_assert (annex[i] == '\0'); | |
c906108c | 8291 | |
6d820c5c | 8292 | i = putpkt (rs->buf); |
c5aa993b JM |
8293 | if (i < 0) |
8294 | return i; | |
c906108c | 8295 | |
6d820c5c DJ |
8296 | getpkt (&rs->buf, &rs->buf_size, 0); |
8297 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 8298 | |
cfd77fa1 | 8299 | return strlen ((char *) readbuf); |
c906108c SS |
8300 | } |
8301 | ||
08388c79 DE |
8302 | static int |
8303 | remote_search_memory (struct target_ops* ops, | |
8304 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
8305 | const gdb_byte *pattern, ULONGEST pattern_len, | |
8306 | CORE_ADDR *found_addrp) | |
8307 | { | |
5af949e3 | 8308 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
8309 | struct remote_state *rs = get_remote_state (); |
8310 | int max_size = get_memory_write_packet_size (); | |
8311 | struct packet_config *packet = | |
8312 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
8313 | /* number of packet bytes used to encode the pattern, | |
8314 | this could be more than PATTERN_LEN due to escape characters */ | |
8315 | int escaped_pattern_len; | |
8316 | /* amount of pattern that was encodable in the packet */ | |
8317 | int used_pattern_len; | |
8318 | int i; | |
8319 | int found; | |
8320 | ULONGEST found_addr; | |
8321 | ||
8322 | /* Don't go to the target if we don't have to. | |
8323 | This is done before checking packet->support to avoid the possibility that | |
8324 | a success for this edge case means the facility works in general. */ | |
8325 | if (pattern_len > search_space_len) | |
8326 | return 0; | |
8327 | if (pattern_len == 0) | |
8328 | { | |
8329 | *found_addrp = start_addr; | |
8330 | return 1; | |
8331 | } | |
8332 | ||
8333 | /* If we already know the packet isn't supported, fall back to the simple | |
8334 | way of searching memory. */ | |
8335 | ||
8336 | if (packet->support == PACKET_DISABLE) | |
8337 | { | |
8338 | /* Target doesn't provided special support, fall back and use the | |
8339 | standard support (copy memory and do the search here). */ | |
8340 | return simple_search_memory (ops, start_addr, search_space_len, | |
8341 | pattern, pattern_len, found_addrp); | |
8342 | } | |
8343 | ||
8344 | /* Insert header. */ | |
8345 | i = snprintf (rs->buf, max_size, | |
8346 | "qSearch:memory:%s;%s;", | |
5af949e3 | 8347 | phex_nz (start_addr, addr_size), |
08388c79 DE |
8348 | phex_nz (search_space_len, sizeof (search_space_len))); |
8349 | max_size -= (i + 1); | |
8350 | ||
8351 | /* Escape as much data as fits into rs->buf. */ | |
8352 | escaped_pattern_len = | |
8353 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
8354 | &used_pattern_len, max_size); | |
8355 | ||
8356 | /* Bail if the pattern is too large. */ | |
8357 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 8358 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
8359 | |
8360 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
8361 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
8362 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
8363 | { | |
8364 | /* The request may not have worked because the command is not | |
8365 | supported. If so, fall back to the simple way. */ | |
8366 | if (packet->support == PACKET_DISABLE) | |
8367 | { | |
8368 | return simple_search_memory (ops, start_addr, search_space_len, | |
8369 | pattern, pattern_len, found_addrp); | |
8370 | } | |
8371 | return -1; | |
8372 | } | |
8373 | ||
8374 | if (rs->buf[0] == '0') | |
8375 | found = 0; | |
8376 | else if (rs->buf[0] == '1') | |
8377 | { | |
8378 | found = 1; | |
8379 | if (rs->buf[1] != ',') | |
10e0fa18 | 8380 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8381 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
8382 | *found_addrp = found_addr; | |
8383 | } | |
8384 | else | |
10e0fa18 | 8385 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
8386 | |
8387 | return found; | |
8388 | } | |
8389 | ||
96baa820 JM |
8390 | static void |
8391 | remote_rcmd (char *command, | |
d9fcf2fb | 8392 | struct ui_file *outbuf) |
96baa820 | 8393 | { |
d01949b6 | 8394 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8395 | char *p = rs->buf; |
96baa820 JM |
8396 | |
8397 | if (!remote_desc) | |
8a3fe4f8 | 8398 | error (_("remote rcmd is only available after target open")); |
96baa820 | 8399 | |
23860348 | 8400 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
8401 | if (command == NULL) |
8402 | command = ""; | |
8403 | ||
23860348 | 8404 | /* The query prefix. */ |
2e9f7625 DJ |
8405 | strcpy (rs->buf, "qRcmd,"); |
8406 | p = strchr (rs->buf, '\0'); | |
96baa820 | 8407 | |
3e43a32a MS |
8408 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) |
8409 | > get_remote_packet_size ()) | |
8a3fe4f8 | 8410 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 8411 | |
23860348 | 8412 | /* Encode the actual command. */ |
cfd77fa1 | 8413 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 8414 | |
6d820c5c | 8415 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 8416 | error (_("Communication problem with target.")); |
96baa820 JM |
8417 | |
8418 | /* get/display the response */ | |
8419 | while (1) | |
8420 | { | |
2e9f7625 DJ |
8421 | char *buf; |
8422 | ||
00bf0b85 | 8423 | /* XXX - see also remote_get_noisy_reply(). */ |
2e9f7625 | 8424 | rs->buf[0] = '\0'; |
6d820c5c | 8425 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 8426 | buf = rs->buf; |
96baa820 | 8427 | if (buf[0] == '\0') |
8a3fe4f8 | 8428 | error (_("Target does not support this command.")); |
96baa820 JM |
8429 | if (buf[0] == 'O' && buf[1] != 'K') |
8430 | { | |
23860348 | 8431 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
8432 | continue; |
8433 | } | |
8434 | if (strcmp (buf, "OK") == 0) | |
8435 | break; | |
7be570e7 JM |
8436 | if (strlen (buf) == 3 && buf[0] == 'E' |
8437 | && isdigit (buf[1]) && isdigit (buf[2])) | |
8438 | { | |
8a3fe4f8 | 8439 | error (_("Protocol error with Rcmd")); |
7be570e7 | 8440 | } |
96baa820 JM |
8441 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
8442 | { | |
8443 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 8444 | |
96baa820 JM |
8445 | fputc_unfiltered (c, outbuf); |
8446 | } | |
8447 | break; | |
8448 | } | |
8449 | } | |
8450 | ||
fd79ecee DJ |
8451 | static VEC(mem_region_s) * |
8452 | remote_memory_map (struct target_ops *ops) | |
8453 | { | |
8454 | VEC(mem_region_s) *result = NULL; | |
8455 | char *text = target_read_stralloc (¤t_target, | |
8456 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
8457 | ||
8458 | if (text) | |
8459 | { | |
8460 | struct cleanup *back_to = make_cleanup (xfree, text); | |
a744cf53 | 8461 | |
fd79ecee DJ |
8462 | result = parse_memory_map (text); |
8463 | do_cleanups (back_to); | |
8464 | } | |
8465 | ||
8466 | return result; | |
8467 | } | |
8468 | ||
c906108c | 8469 | static void |
fba45db2 | 8470 | packet_command (char *args, int from_tty) |
c906108c | 8471 | { |
d01949b6 | 8472 | struct remote_state *rs = get_remote_state (); |
c906108c | 8473 | |
c5aa993b | 8474 | if (!remote_desc) |
8a3fe4f8 | 8475 | error (_("command can only be used with remote target")); |
c906108c | 8476 | |
c5aa993b | 8477 | if (!args) |
8a3fe4f8 | 8478 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
8479 | |
8480 | puts_filtered ("sending: "); | |
8481 | print_packet (args); | |
8482 | puts_filtered ("\n"); | |
8483 | putpkt (args); | |
8484 | ||
6d820c5c | 8485 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 8486 | puts_filtered ("received: "); |
6d820c5c | 8487 | print_packet (rs->buf); |
c906108c SS |
8488 | puts_filtered ("\n"); |
8489 | } | |
8490 | ||
8491 | #if 0 | |
23860348 | 8492 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 8493 | |
a14ed312 | 8494 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 8495 | |
a14ed312 | 8496 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 8497 | |
a14ed312 | 8498 | static void threadalive_test (char *cmd, int tty); |
c906108c | 8499 | |
a14ed312 | 8500 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 8501 | |
23860348 | 8502 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 8503 | |
a14ed312 | 8504 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 8505 | |
23860348 | 8506 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 8507 | |
a14ed312 | 8508 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 8509 | |
a14ed312 | 8510 | static void init_remote_threadtests (void); |
c906108c | 8511 | |
23860348 | 8512 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
8513 | |
8514 | static void | |
fba45db2 | 8515 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
8516 | { |
8517 | int sample_thread = SAMPLE_THREAD; | |
8518 | ||
a3f17187 | 8519 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 8520 | set_general_thread (sample_thread); |
c906108c SS |
8521 | } |
8522 | ||
8523 | ||
8524 | static void | |
fba45db2 | 8525 | threadalive_test (char *cmd, int tty) |
c906108c SS |
8526 | { |
8527 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
8528 | int pid = ptid_get_pid (inferior_ptid); |
8529 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 8530 | |
79d7f229 | 8531 | if (remote_thread_alive (ptid)) |
c906108c SS |
8532 | printf_filtered ("PASS: Thread alive test\n"); |
8533 | else | |
8534 | printf_filtered ("FAIL: Thread alive test\n"); | |
8535 | } | |
8536 | ||
23860348 | 8537 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
8538 | |
8539 | void | |
fba45db2 | 8540 | output_threadid (char *title, threadref *ref) |
c906108c SS |
8541 | { |
8542 | char hexid[20]; | |
8543 | ||
23860348 | 8544 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
8545 | hexid[16] = 0; |
8546 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
8547 | } | |
8548 | ||
8549 | static void | |
fba45db2 | 8550 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
8551 | { |
8552 | int startflag = 1; | |
8553 | threadref nextthread; | |
8554 | int done, result_count; | |
8555 | threadref threadlist[3]; | |
8556 | ||
8557 | printf_filtered ("Remote Threadlist test\n"); | |
8558 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
8559 | &result_count, &threadlist[0])) | |
8560 | printf_filtered ("FAIL: threadlist test\n"); | |
8561 | else | |
8562 | { | |
8563 | threadref *scan = threadlist; | |
8564 | threadref *limit = scan + result_count; | |
8565 | ||
8566 | while (scan < limit) | |
8567 | output_threadid (" thread ", scan++); | |
8568 | } | |
8569 | } | |
8570 | ||
8571 | void | |
fba45db2 | 8572 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
8573 | { |
8574 | output_threadid ("Threadid: ", &info->threadid); | |
8575 | printf_filtered ("Name: %s\n ", info->shortname); | |
8576 | printf_filtered ("State: %s\n", info->display); | |
8577 | printf_filtered ("other: %s\n\n", info->more_display); | |
8578 | } | |
8579 | ||
8580 | int | |
fba45db2 | 8581 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
8582 | { |
8583 | int result; | |
8584 | int set; | |
8585 | struct gdb_ext_thread_info threadinfo; | |
8586 | ||
8587 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
8588 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
8589 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
8590 | display_thread_info (&threadinfo); | |
8591 | return result; | |
8592 | } | |
8593 | ||
8594 | static void | |
fba45db2 | 8595 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
8596 | { |
8597 | int athread = SAMPLE_THREAD; | |
8598 | threadref thread; | |
8599 | int set; | |
8600 | ||
8601 | int_to_threadref (&thread, athread); | |
8602 | printf_filtered ("Remote Threadinfo test\n"); | |
8603 | if (!get_and_display_threadinfo (&thread)) | |
8604 | printf_filtered ("FAIL cannot get thread info\n"); | |
8605 | } | |
8606 | ||
8607 | static int | |
fba45db2 | 8608 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
8609 | { |
8610 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
8611 | return get_and_display_threadinfo (ref); | |
8612 | } | |
8613 | ||
8614 | static void | |
fba45db2 | 8615 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
8616 | { |
8617 | printf_filtered ("Remote Threadlist update test\n"); | |
8618 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
8619 | } | |
8620 | ||
8621 | static void | |
8622 | init_remote_threadtests (void) | |
8623 | { | |
3e43a32a MS |
8624 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
8625 | _("Fetch and print the remote list of " | |
8626 | "thread identifiers, one pkt only")); | |
c906108c | 8627 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 8628 | _("Fetch and display info about one thread")); |
c906108c | 8629 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 8630 | _("Test setting to a different thread")); |
c906108c | 8631 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 8632 | _("Iterate through updating all remote thread info")); |
c906108c | 8633 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 8634 | _(" Remote thread alive test ")); |
c906108c SS |
8635 | } |
8636 | ||
8637 | #endif /* 0 */ | |
8638 | ||
f3fb8c85 MS |
8639 | /* Convert a thread ID to a string. Returns the string in a static |
8640 | buffer. */ | |
8641 | ||
8642 | static char * | |
117de6a9 | 8643 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 8644 | { |
79d7f229 | 8645 | static char buf[64]; |
82f73884 | 8646 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 8647 | |
ecd0ada5 PA |
8648 | if (ptid_is_pid (ptid)) |
8649 | { | |
8650 | /* Printing an inferior target id. */ | |
8651 | ||
8652 | /* When multi-process extensions are off, there's no way in the | |
8653 | remote protocol to know the remote process id, if there's any | |
8654 | at all. There's one exception --- when we're connected with | |
8655 | target extended-remote, and we manually attached to a process | |
8656 | with "attach PID". We don't record anywhere a flag that | |
8657 | allows us to distinguish that case from the case of | |
8658 | connecting with extended-remote and the stub already being | |
8659 | attached to a process, and reporting yes to qAttached, hence | |
8660 | no smart special casing here. */ | |
8661 | if (!remote_multi_process_p (rs)) | |
8662 | { | |
8663 | xsnprintf (buf, sizeof buf, "Remote target"); | |
8664 | return buf; | |
8665 | } | |
8666 | ||
8667 | return normal_pid_to_str (ptid); | |
82f73884 | 8668 | } |
ecd0ada5 | 8669 | else |
79d7f229 | 8670 | { |
ecd0ada5 PA |
8671 | if (ptid_equal (magic_null_ptid, ptid)) |
8672 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
8673 | else if (remote_multi_process_p (rs)) | |
8674 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
8675 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
8676 | else | |
8677 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
8678 | ptid_get_tid (ptid)); | |
79d7f229 PA |
8679 | return buf; |
8680 | } | |
f3fb8c85 MS |
8681 | } |
8682 | ||
38691318 KB |
8683 | /* Get the address of the thread local variable in OBJFILE which is |
8684 | stored at OFFSET within the thread local storage for thread PTID. */ | |
8685 | ||
8686 | static CORE_ADDR | |
117de6a9 PA |
8687 | remote_get_thread_local_address (struct target_ops *ops, |
8688 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 8689 | { |
444abaca | 8690 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
8691 | { |
8692 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 8693 | char *p = rs->buf; |
82f73884 | 8694 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 8695 | enum packet_result result; |
38691318 KB |
8696 | |
8697 | strcpy (p, "qGetTLSAddr:"); | |
8698 | p += strlen (p); | |
82f73884 | 8699 | p = write_ptid (p, endp, ptid); |
38691318 KB |
8700 | *p++ = ','; |
8701 | p += hexnumstr (p, offset); | |
8702 | *p++ = ','; | |
8703 | p += hexnumstr (p, lm); | |
8704 | *p++ = '\0'; | |
8705 | ||
6d820c5c DJ |
8706 | putpkt (rs->buf); |
8707 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3e43a32a MS |
8708 | result = packet_ok (rs->buf, |
8709 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 8710 | if (result == PACKET_OK) |
38691318 KB |
8711 | { |
8712 | ULONGEST result; | |
8713 | ||
6d820c5c | 8714 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
8715 | return result; |
8716 | } | |
571dd617 | 8717 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
8718 | throw_error (TLS_GENERIC_ERROR, |
8719 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 8720 | else |
109c3e39 AC |
8721 | throw_error (TLS_GENERIC_ERROR, |
8722 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
8723 | } |
8724 | else | |
109c3e39 AC |
8725 | throw_error (TLS_GENERIC_ERROR, |
8726 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
8727 | /* Not reached. */ |
8728 | return 0; | |
8729 | } | |
8730 | ||
711e434b PM |
8731 | /* Provide thread local base, i.e. Thread Information Block address. |
8732 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
8733 | ||
8734 | int | |
8735 | remote_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
8736 | { | |
8737 | if (remote_protocol_packets[PACKET_qGetTIBAddr].support != PACKET_DISABLE) | |
8738 | { | |
8739 | struct remote_state *rs = get_remote_state (); | |
8740 | char *p = rs->buf; | |
8741 | char *endp = rs->buf + get_remote_packet_size (); | |
8742 | enum packet_result result; | |
8743 | ||
8744 | strcpy (p, "qGetTIBAddr:"); | |
8745 | p += strlen (p); | |
8746 | p = write_ptid (p, endp, ptid); | |
8747 | *p++ = '\0'; | |
8748 | ||
8749 | putpkt (rs->buf); | |
8750 | getpkt (&rs->buf, &rs->buf_size, 0); | |
8751 | result = packet_ok (rs->buf, | |
8752 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
8753 | if (result == PACKET_OK) | |
8754 | { | |
8755 | ULONGEST result; | |
8756 | ||
8757 | unpack_varlen_hex (rs->buf, &result); | |
8758 | if (addr) | |
8759 | *addr = (CORE_ADDR) result; | |
8760 | return 1; | |
8761 | } | |
8762 | else if (result == PACKET_UNKNOWN) | |
8763 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
8764 | else | |
8765 | error (_("Remote target failed to process qGetTIBAddr request")); | |
8766 | } | |
8767 | else | |
8768 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
8769 | /* Not reached. */ | |
8770 | return 0; | |
8771 | } | |
8772 | ||
29709017 DJ |
8773 | /* Support for inferring a target description based on the current |
8774 | architecture and the size of a 'g' packet. While the 'g' packet | |
8775 | can have any size (since optional registers can be left off the | |
8776 | end), some sizes are easily recognizable given knowledge of the | |
8777 | approximate architecture. */ | |
8778 | ||
8779 | struct remote_g_packet_guess | |
8780 | { | |
8781 | int bytes; | |
8782 | const struct target_desc *tdesc; | |
8783 | }; | |
8784 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
8785 | DEF_VEC_O(remote_g_packet_guess_s); | |
8786 | ||
8787 | struct remote_g_packet_data | |
8788 | { | |
8789 | VEC(remote_g_packet_guess_s) *guesses; | |
8790 | }; | |
8791 | ||
8792 | static struct gdbarch_data *remote_g_packet_data_handle; | |
8793 | ||
8794 | static void * | |
8795 | remote_g_packet_data_init (struct obstack *obstack) | |
8796 | { | |
8797 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
8798 | } | |
8799 | ||
8800 | void | |
8801 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
8802 | const struct target_desc *tdesc) | |
8803 | { | |
8804 | struct remote_g_packet_data *data | |
8805 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
8806 | struct remote_g_packet_guess new_guess, *guess; | |
8807 | int ix; | |
8808 | ||
8809 | gdb_assert (tdesc != NULL); | |
8810 | ||
8811 | for (ix = 0; | |
8812 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8813 | ix++) | |
8814 | if (guess->bytes == bytes) | |
8815 | internal_error (__FILE__, __LINE__, | |
8816 | "Duplicate g packet description added for size %d", | |
8817 | bytes); | |
8818 | ||
8819 | new_guess.bytes = bytes; | |
8820 | new_guess.tdesc = tdesc; | |
8821 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
8822 | } | |
8823 | ||
d962ef82 DJ |
8824 | /* Return 1 if remote_read_description would do anything on this target |
8825 | and architecture, 0 otherwise. */ | |
8826 | ||
8827 | static int | |
8828 | remote_read_description_p (struct target_ops *target) | |
8829 | { | |
8830 | struct remote_g_packet_data *data | |
8831 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
8832 | ||
8833 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
8834 | return 1; | |
8835 | ||
8836 | return 0; | |
8837 | } | |
8838 | ||
29709017 DJ |
8839 | static const struct target_desc * |
8840 | remote_read_description (struct target_ops *target) | |
8841 | { | |
8842 | struct remote_g_packet_data *data | |
1cf3db46 | 8843 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 8844 | |
d962ef82 DJ |
8845 | /* Do not try this during initial connection, when we do not know |
8846 | whether there is a running but stopped thread. */ | |
8847 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
8848 | return NULL; | |
8849 | ||
29709017 DJ |
8850 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
8851 | { | |
8852 | struct remote_g_packet_guess *guess; | |
8853 | int ix; | |
8854 | int bytes = send_g_packet (); | |
8855 | ||
8856 | for (ix = 0; | |
8857 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8858 | ix++) | |
8859 | if (guess->bytes == bytes) | |
8860 | return guess->tdesc; | |
8861 | ||
8862 | /* We discard the g packet. A minor optimization would be to | |
8863 | hold on to it, and fill the register cache once we have selected | |
8864 | an architecture, but it's too tricky to do safely. */ | |
8865 | } | |
8866 | ||
8867 | return NULL; | |
8868 | } | |
8869 | ||
a6b151f1 DJ |
8870 | /* Remote file transfer support. This is host-initiated I/O, not |
8871 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
8872 | ||
8873 | /* If *LEFT is at least the length of STRING, copy STRING to | |
8874 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8875 | decrease *LEFT. Otherwise raise an error. */ | |
8876 | ||
8877 | static void | |
8878 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
8879 | { | |
8880 | int len = strlen (string); | |
8881 | ||
8882 | if (len > *left) | |
8883 | error (_("Packet too long for target.")); | |
8884 | ||
8885 | memcpy (*buffer, string, len); | |
8886 | *buffer += len; | |
8887 | *left -= len; | |
8888 | ||
8889 | /* NUL-terminate the buffer as a convenience, if there is | |
8890 | room. */ | |
8891 | if (*left) | |
8892 | **buffer = '\0'; | |
8893 | } | |
8894 | ||
8895 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
8896 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8897 | decrease *LEFT. Otherwise raise an error. */ | |
8898 | ||
8899 | static void | |
8900 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
8901 | int len) | |
8902 | { | |
8903 | if (2 * len > *left) | |
8904 | error (_("Packet too long for target.")); | |
8905 | ||
8906 | bin2hex (bytes, *buffer, len); | |
8907 | *buffer += 2 * len; | |
8908 | *left -= 2 * len; | |
8909 | ||
8910 | /* NUL-terminate the buffer as a convenience, if there is | |
8911 | room. */ | |
8912 | if (*left) | |
8913 | **buffer = '\0'; | |
8914 | } | |
8915 | ||
8916 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
8917 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8918 | decrease *LEFT. Otherwise raise an error. */ | |
8919 | ||
8920 | static void | |
8921 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
8922 | { | |
8923 | int len = hexnumlen (value); | |
8924 | ||
8925 | if (len > *left) | |
8926 | error (_("Packet too long for target.")); | |
8927 | ||
8928 | hexnumstr (*buffer, value); | |
8929 | *buffer += len; | |
8930 | *left -= len; | |
8931 | ||
8932 | /* NUL-terminate the buffer as a convenience, if there is | |
8933 | room. */ | |
8934 | if (*left) | |
8935 | **buffer = '\0'; | |
8936 | } | |
8937 | ||
8938 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
8939 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
8940 | was included, and *ATTACHMENT to point to the start of the annex | |
8941 | if any. The length of the packet isn't needed here; there may | |
8942 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
8943 | ||
8944 | Return 0 if the packet could be parsed, -1 if it could not. If | |
8945 | -1 is returned, the other variables may not be initialized. */ | |
8946 | ||
8947 | static int | |
8948 | remote_hostio_parse_result (char *buffer, int *retcode, | |
8949 | int *remote_errno, char **attachment) | |
8950 | { | |
8951 | char *p, *p2; | |
8952 | ||
8953 | *remote_errno = 0; | |
8954 | *attachment = NULL; | |
8955 | ||
8956 | if (buffer[0] != 'F') | |
8957 | return -1; | |
8958 | ||
8959 | errno = 0; | |
8960 | *retcode = strtol (&buffer[1], &p, 16); | |
8961 | if (errno != 0 || p == &buffer[1]) | |
8962 | return -1; | |
8963 | ||
8964 | /* Check for ",errno". */ | |
8965 | if (*p == ',') | |
8966 | { | |
8967 | errno = 0; | |
8968 | *remote_errno = strtol (p + 1, &p2, 16); | |
8969 | if (errno != 0 || p + 1 == p2) | |
8970 | return -1; | |
8971 | p = p2; | |
8972 | } | |
8973 | ||
8974 | /* Check for ";attachment". If there is no attachment, the | |
8975 | packet should end here. */ | |
8976 | if (*p == ';') | |
8977 | { | |
8978 | *attachment = p + 1; | |
8979 | return 0; | |
8980 | } | |
8981 | else if (*p == '\0') | |
8982 | return 0; | |
8983 | else | |
8984 | return -1; | |
8985 | } | |
8986 | ||
8987 | /* Send a prepared I/O packet to the target and read its response. | |
8988 | The prepared packet is in the global RS->BUF before this function | |
8989 | is called, and the answer is there when we return. | |
8990 | ||
8991 | COMMAND_BYTES is the length of the request to send, which may include | |
8992 | binary data. WHICH_PACKET is the packet configuration to check | |
8993 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
8994 | is set to the error number and -1 is returned. Otherwise the value | |
8995 | returned by the function is returned. | |
8996 | ||
8997 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
8998 | attachment is expected; an error will be reported if there's a | |
8999 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
9000 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
9001 | attachment's length. */ | |
9002 | ||
9003 | static int | |
9004 | remote_hostio_send_command (int command_bytes, int which_packet, | |
9005 | int *remote_errno, char **attachment, | |
9006 | int *attachment_len) | |
9007 | { | |
9008 | struct remote_state *rs = get_remote_state (); | |
9009 | int ret, bytes_read; | |
9010 | char *attachment_tmp; | |
9011 | ||
f1838a98 UW |
9012 | if (!remote_desc |
9013 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
9014 | { |
9015 | *remote_errno = FILEIO_ENOSYS; | |
9016 | return -1; | |
9017 | } | |
9018 | ||
9019 | putpkt_binary (rs->buf, command_bytes); | |
9020 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
9021 | ||
9022 | /* If it timed out, something is wrong. Don't try to parse the | |
9023 | buffer. */ | |
9024 | if (bytes_read < 0) | |
9025 | { | |
9026 | *remote_errno = FILEIO_EINVAL; | |
9027 | return -1; | |
9028 | } | |
9029 | ||
9030 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
9031 | { | |
9032 | case PACKET_ERROR: | |
9033 | *remote_errno = FILEIO_EINVAL; | |
9034 | return -1; | |
9035 | case PACKET_UNKNOWN: | |
9036 | *remote_errno = FILEIO_ENOSYS; | |
9037 | return -1; | |
9038 | case PACKET_OK: | |
9039 | break; | |
9040 | } | |
9041 | ||
9042 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
9043 | &attachment_tmp)) | |
9044 | { | |
9045 | *remote_errno = FILEIO_EINVAL; | |
9046 | return -1; | |
9047 | } | |
9048 | ||
9049 | /* Make sure we saw an attachment if and only if we expected one. */ | |
9050 | if ((attachment_tmp == NULL && attachment != NULL) | |
9051 | || (attachment_tmp != NULL && attachment == NULL)) | |
9052 | { | |
9053 | *remote_errno = FILEIO_EINVAL; | |
9054 | return -1; | |
9055 | } | |
9056 | ||
9057 | /* If an attachment was found, it must point into the packet buffer; | |
9058 | work out how many bytes there were. */ | |
9059 | if (attachment_tmp != NULL) | |
9060 | { | |
9061 | *attachment = attachment_tmp; | |
9062 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
9063 | } | |
9064 | ||
9065 | return ret; | |
9066 | } | |
9067 | ||
9068 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
9069 | remote file descriptor, or -1 if an error occurs (and set | |
9070 | *REMOTE_ERRNO). */ | |
9071 | ||
9072 | static int | |
9073 | remote_hostio_open (const char *filename, int flags, int mode, | |
9074 | int *remote_errno) | |
9075 | { | |
9076 | struct remote_state *rs = get_remote_state (); | |
9077 | char *p = rs->buf; | |
9078 | int left = get_remote_packet_size () - 1; | |
9079 | ||
9080 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
9081 | ||
9082 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9083 | strlen (filename)); | |
9084 | remote_buffer_add_string (&p, &left, ","); | |
9085 | ||
9086 | remote_buffer_add_int (&p, &left, flags); | |
9087 | remote_buffer_add_string (&p, &left, ","); | |
9088 | ||
9089 | remote_buffer_add_int (&p, &left, mode); | |
9090 | ||
9091 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
9092 | remote_errno, NULL, NULL); | |
9093 | } | |
9094 | ||
9095 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
9096 | Return the number of bytes written, or -1 if an error occurs (and | |
9097 | set *REMOTE_ERRNO). */ | |
9098 | ||
9099 | static int | |
9100 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
9101 | ULONGEST offset, int *remote_errno) | |
9102 | { | |
9103 | struct remote_state *rs = get_remote_state (); | |
9104 | char *p = rs->buf; | |
9105 | int left = get_remote_packet_size (); | |
9106 | int out_len; | |
9107 | ||
9108 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
9109 | ||
9110 | remote_buffer_add_int (&p, &left, fd); | |
9111 | remote_buffer_add_string (&p, &left, ","); | |
9112 | ||
9113 | remote_buffer_add_int (&p, &left, offset); | |
9114 | remote_buffer_add_string (&p, &left, ","); | |
9115 | ||
9116 | p += remote_escape_output (write_buf, len, p, &out_len, | |
9117 | get_remote_packet_size () - (p - rs->buf)); | |
9118 | ||
9119 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
9120 | remote_errno, NULL, NULL); | |
9121 | } | |
9122 | ||
9123 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
9124 | Return the number of bytes read, or -1 if an error occurs (and | |
9125 | set *REMOTE_ERRNO). */ | |
9126 | ||
9127 | static int | |
9128 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
9129 | ULONGEST offset, int *remote_errno) | |
9130 | { | |
9131 | struct remote_state *rs = get_remote_state (); | |
9132 | char *p = rs->buf; | |
9133 | char *attachment; | |
9134 | int left = get_remote_packet_size (); | |
9135 | int ret, attachment_len; | |
9136 | int read_len; | |
9137 | ||
9138 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
9139 | ||
9140 | remote_buffer_add_int (&p, &left, fd); | |
9141 | remote_buffer_add_string (&p, &left, ","); | |
9142 | ||
9143 | remote_buffer_add_int (&p, &left, len); | |
9144 | remote_buffer_add_string (&p, &left, ","); | |
9145 | ||
9146 | remote_buffer_add_int (&p, &left, offset); | |
9147 | ||
9148 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
9149 | remote_errno, &attachment, | |
9150 | &attachment_len); | |
9151 | ||
9152 | if (ret < 0) | |
9153 | return ret; | |
9154 | ||
9155 | read_len = remote_unescape_input (attachment, attachment_len, | |
9156 | read_buf, len); | |
9157 | if (read_len != ret) | |
9158 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
9159 | ||
9160 | return ret; | |
9161 | } | |
9162 | ||
9163 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
9164 | (and set *REMOTE_ERRNO). */ | |
9165 | ||
9166 | static int | |
9167 | remote_hostio_close (int fd, int *remote_errno) | |
9168 | { | |
9169 | struct remote_state *rs = get_remote_state (); | |
9170 | char *p = rs->buf; | |
9171 | int left = get_remote_packet_size () - 1; | |
9172 | ||
9173 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
9174 | ||
9175 | remote_buffer_add_int (&p, &left, fd); | |
9176 | ||
9177 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
9178 | remote_errno, NULL, NULL); | |
9179 | } | |
9180 | ||
9181 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
9182 | occurs (and set *REMOTE_ERRNO). */ | |
9183 | ||
9184 | static int | |
9185 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
9186 | { | |
9187 | struct remote_state *rs = get_remote_state (); | |
9188 | char *p = rs->buf; | |
9189 | int left = get_remote_packet_size () - 1; | |
9190 | ||
9191 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
9192 | ||
9193 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
9194 | strlen (filename)); | |
9195 | ||
9196 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
9197 | remote_errno, NULL, NULL); | |
9198 | } | |
9199 | ||
9200 | static int | |
9201 | remote_fileio_errno_to_host (int errnum) | |
9202 | { | |
9203 | switch (errnum) | |
9204 | { | |
9205 | case FILEIO_EPERM: | |
9206 | return EPERM; | |
9207 | case FILEIO_ENOENT: | |
9208 | return ENOENT; | |
9209 | case FILEIO_EINTR: | |
9210 | return EINTR; | |
9211 | case FILEIO_EIO: | |
9212 | return EIO; | |
9213 | case FILEIO_EBADF: | |
9214 | return EBADF; | |
9215 | case FILEIO_EACCES: | |
9216 | return EACCES; | |
9217 | case FILEIO_EFAULT: | |
9218 | return EFAULT; | |
9219 | case FILEIO_EBUSY: | |
9220 | return EBUSY; | |
9221 | case FILEIO_EEXIST: | |
9222 | return EEXIST; | |
9223 | case FILEIO_ENODEV: | |
9224 | return ENODEV; | |
9225 | case FILEIO_ENOTDIR: | |
9226 | return ENOTDIR; | |
9227 | case FILEIO_EISDIR: | |
9228 | return EISDIR; | |
9229 | case FILEIO_EINVAL: | |
9230 | return EINVAL; | |
9231 | case FILEIO_ENFILE: | |
9232 | return ENFILE; | |
9233 | case FILEIO_EMFILE: | |
9234 | return EMFILE; | |
9235 | case FILEIO_EFBIG: | |
9236 | return EFBIG; | |
9237 | case FILEIO_ENOSPC: | |
9238 | return ENOSPC; | |
9239 | case FILEIO_ESPIPE: | |
9240 | return ESPIPE; | |
9241 | case FILEIO_EROFS: | |
9242 | return EROFS; | |
9243 | case FILEIO_ENOSYS: | |
9244 | return ENOSYS; | |
9245 | case FILEIO_ENAMETOOLONG: | |
9246 | return ENAMETOOLONG; | |
9247 | } | |
9248 | return -1; | |
9249 | } | |
9250 | ||
9251 | static char * | |
9252 | remote_hostio_error (int errnum) | |
9253 | { | |
9254 | int host_error = remote_fileio_errno_to_host (errnum); | |
9255 | ||
9256 | if (host_error == -1) | |
9257 | error (_("Unknown remote I/O error %d"), errnum); | |
9258 | else | |
9259 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
9260 | } | |
9261 | ||
a6b151f1 DJ |
9262 | static void |
9263 | remote_hostio_close_cleanup (void *opaque) | |
9264 | { | |
9265 | int fd = *(int *) opaque; | |
9266 | int remote_errno; | |
9267 | ||
9268 | remote_hostio_close (fd, &remote_errno); | |
9269 | } | |
9270 | ||
f1838a98 UW |
9271 | |
9272 | static void * | |
9273 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
9274 | { | |
9275 | const char *filename = bfd_get_filename (abfd); | |
9276 | int fd, remote_errno; | |
9277 | int *stream; | |
9278 | ||
9279 | gdb_assert (remote_filename_p (filename)); | |
9280 | ||
9281 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
9282 | if (fd == -1) | |
9283 | { | |
9284 | errno = remote_fileio_errno_to_host (remote_errno); | |
9285 | bfd_set_error (bfd_error_system_call); | |
9286 | return NULL; | |
9287 | } | |
9288 | ||
9289 | stream = xmalloc (sizeof (int)); | |
9290 | *stream = fd; | |
9291 | return stream; | |
9292 | } | |
9293 | ||
9294 | static int | |
9295 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
9296 | { | |
9297 | int fd = *(int *)stream; | |
9298 | int remote_errno; | |
9299 | ||
9300 | xfree (stream); | |
9301 | ||
9302 | /* Ignore errors on close; these may happen if the remote | |
9303 | connection was already torn down. */ | |
9304 | remote_hostio_close (fd, &remote_errno); | |
9305 | ||
9306 | return 1; | |
9307 | } | |
9308 | ||
9309 | static file_ptr | |
9310 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
9311 | file_ptr nbytes, file_ptr offset) | |
9312 | { | |
9313 | int fd = *(int *)stream; | |
9314 | int remote_errno; | |
9315 | file_ptr pos, bytes; | |
9316 | ||
9317 | pos = 0; | |
9318 | while (nbytes > pos) | |
9319 | { | |
9320 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
9321 | offset + pos, &remote_errno); | |
9322 | if (bytes == 0) | |
9323 | /* Success, but no bytes, means end-of-file. */ | |
9324 | break; | |
9325 | if (bytes == -1) | |
9326 | { | |
9327 | errno = remote_fileio_errno_to_host (remote_errno); | |
9328 | bfd_set_error (bfd_error_system_call); | |
9329 | return -1; | |
9330 | } | |
9331 | ||
9332 | pos += bytes; | |
9333 | } | |
9334 | ||
9335 | return pos; | |
9336 | } | |
9337 | ||
9338 | static int | |
9339 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
9340 | { | |
9341 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
9342 | sb->st_size = INT_MAX; | |
9343 | return 0; | |
9344 | } | |
9345 | ||
9346 | int | |
9347 | remote_filename_p (const char *filename) | |
9348 | { | |
9349 | return strncmp (filename, "remote:", 7) == 0; | |
9350 | } | |
9351 | ||
9352 | bfd * | |
9353 | remote_bfd_open (const char *remote_file, const char *target) | |
9354 | { | |
9355 | return bfd_openr_iovec (remote_file, target, | |
9356 | remote_bfd_iovec_open, NULL, | |
9357 | remote_bfd_iovec_pread, | |
9358 | remote_bfd_iovec_close, | |
9359 | remote_bfd_iovec_stat); | |
9360 | } | |
9361 | ||
a6b151f1 DJ |
9362 | void |
9363 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
9364 | { | |
9365 | struct cleanup *back_to, *close_cleanup; | |
9366 | int retcode, fd, remote_errno, bytes, io_size; | |
9367 | FILE *file; | |
9368 | gdb_byte *buffer; | |
9369 | int bytes_in_buffer; | |
9370 | int saw_eof; | |
9371 | ULONGEST offset; | |
9372 | ||
9373 | if (!remote_desc) | |
9374 | error (_("command can only be used with remote target")); | |
9375 | ||
9376 | file = fopen (local_file, "rb"); | |
9377 | if (file == NULL) | |
9378 | perror_with_name (local_file); | |
7c8a8b04 | 9379 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9380 | |
9381 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
9382 | | FILEIO_O_TRUNC), | |
9383 | 0700, &remote_errno); | |
9384 | if (fd == -1) | |
9385 | remote_hostio_error (remote_errno); | |
9386 | ||
9387 | /* Send up to this many bytes at once. They won't all fit in the | |
9388 | remote packet limit, so we'll transfer slightly fewer. */ | |
9389 | io_size = get_remote_packet_size (); | |
9390 | buffer = xmalloc (io_size); | |
9391 | make_cleanup (xfree, buffer); | |
9392 | ||
9393 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9394 | ||
9395 | bytes_in_buffer = 0; | |
9396 | saw_eof = 0; | |
9397 | offset = 0; | |
9398 | while (bytes_in_buffer || !saw_eof) | |
9399 | { | |
9400 | if (!saw_eof) | |
9401 | { | |
3e43a32a MS |
9402 | bytes = fread (buffer + bytes_in_buffer, 1, |
9403 | io_size - bytes_in_buffer, | |
a6b151f1 DJ |
9404 | file); |
9405 | if (bytes == 0) | |
9406 | { | |
9407 | if (ferror (file)) | |
9408 | error (_("Error reading %s."), local_file); | |
9409 | else | |
9410 | { | |
9411 | /* EOF. Unless there is something still in the | |
9412 | buffer from the last iteration, we are done. */ | |
9413 | saw_eof = 1; | |
9414 | if (bytes_in_buffer == 0) | |
9415 | break; | |
9416 | } | |
9417 | } | |
9418 | } | |
9419 | else | |
9420 | bytes = 0; | |
9421 | ||
9422 | bytes += bytes_in_buffer; | |
9423 | bytes_in_buffer = 0; | |
9424 | ||
3e43a32a MS |
9425 | retcode = remote_hostio_pwrite (fd, buffer, bytes, |
9426 | offset, &remote_errno); | |
a6b151f1 DJ |
9427 | |
9428 | if (retcode < 0) | |
9429 | remote_hostio_error (remote_errno); | |
9430 | else if (retcode == 0) | |
9431 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
9432 | else if (retcode < bytes) | |
9433 | { | |
9434 | /* Short write. Save the rest of the read data for the next | |
9435 | write. */ | |
9436 | bytes_in_buffer = bytes - retcode; | |
9437 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
9438 | } | |
9439 | ||
9440 | offset += retcode; | |
9441 | } | |
9442 | ||
9443 | discard_cleanups (close_cleanup); | |
9444 | if (remote_hostio_close (fd, &remote_errno)) | |
9445 | remote_hostio_error (remote_errno); | |
9446 | ||
9447 | if (from_tty) | |
9448 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
9449 | do_cleanups (back_to); | |
9450 | } | |
9451 | ||
9452 | void | |
9453 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
9454 | { | |
9455 | struct cleanup *back_to, *close_cleanup; | |
cea39f65 | 9456 | int fd, remote_errno, bytes, io_size; |
a6b151f1 DJ |
9457 | FILE *file; |
9458 | gdb_byte *buffer; | |
9459 | ULONGEST offset; | |
9460 | ||
9461 | if (!remote_desc) | |
9462 | error (_("command can only be used with remote target")); | |
9463 | ||
9464 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
9465 | if (fd == -1) | |
9466 | remote_hostio_error (remote_errno); | |
9467 | ||
9468 | file = fopen (local_file, "wb"); | |
9469 | if (file == NULL) | |
9470 | perror_with_name (local_file); | |
7c8a8b04 | 9471 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
9472 | |
9473 | /* Send up to this many bytes at once. They won't all fit in the | |
9474 | remote packet limit, so we'll transfer slightly fewer. */ | |
9475 | io_size = get_remote_packet_size (); | |
9476 | buffer = xmalloc (io_size); | |
9477 | make_cleanup (xfree, buffer); | |
9478 | ||
9479 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
9480 | ||
9481 | offset = 0; | |
9482 | while (1) | |
9483 | { | |
9484 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
9485 | if (bytes == 0) | |
9486 | /* Success, but no bytes, means end-of-file. */ | |
9487 | break; | |
9488 | if (bytes == -1) | |
9489 | remote_hostio_error (remote_errno); | |
9490 | ||
9491 | offset += bytes; | |
9492 | ||
9493 | bytes = fwrite (buffer, 1, bytes, file); | |
9494 | if (bytes == 0) | |
9495 | perror_with_name (local_file); | |
9496 | } | |
9497 | ||
9498 | discard_cleanups (close_cleanup); | |
9499 | if (remote_hostio_close (fd, &remote_errno)) | |
9500 | remote_hostio_error (remote_errno); | |
9501 | ||
9502 | if (from_tty) | |
9503 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
9504 | do_cleanups (back_to); | |
9505 | } | |
9506 | ||
9507 | void | |
9508 | remote_file_delete (const char *remote_file, int from_tty) | |
9509 | { | |
9510 | int retcode, remote_errno; | |
9511 | ||
9512 | if (!remote_desc) | |
9513 | error (_("command can only be used with remote target")); | |
9514 | ||
9515 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
9516 | if (retcode == -1) | |
9517 | remote_hostio_error (remote_errno); | |
9518 | ||
9519 | if (from_tty) | |
9520 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
9521 | } | |
9522 | ||
9523 | static void | |
9524 | remote_put_command (char *args, int from_tty) | |
9525 | { | |
9526 | struct cleanup *back_to; | |
9527 | char **argv; | |
9528 | ||
d1a41061 PP |
9529 | if (args == NULL) |
9530 | error_no_arg (_("file to put")); | |
9531 | ||
9532 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9533 | back_to = make_cleanup_freeargv (argv); |
9534 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9535 | error (_("Invalid parameters to remote put")); | |
9536 | ||
9537 | remote_file_put (argv[0], argv[1], from_tty); | |
9538 | ||
9539 | do_cleanups (back_to); | |
9540 | } | |
9541 | ||
9542 | static void | |
9543 | remote_get_command (char *args, int from_tty) | |
9544 | { | |
9545 | struct cleanup *back_to; | |
9546 | char **argv; | |
9547 | ||
d1a41061 PP |
9548 | if (args == NULL) |
9549 | error_no_arg (_("file to get")); | |
9550 | ||
9551 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9552 | back_to = make_cleanup_freeargv (argv); |
9553 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
9554 | error (_("Invalid parameters to remote get")); | |
9555 | ||
9556 | remote_file_get (argv[0], argv[1], from_tty); | |
9557 | ||
9558 | do_cleanups (back_to); | |
9559 | } | |
9560 | ||
9561 | static void | |
9562 | remote_delete_command (char *args, int from_tty) | |
9563 | { | |
9564 | struct cleanup *back_to; | |
9565 | char **argv; | |
9566 | ||
d1a41061 PP |
9567 | if (args == NULL) |
9568 | error_no_arg (_("file to delete")); | |
9569 | ||
9570 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
9571 | back_to = make_cleanup_freeargv (argv); |
9572 | if (argv[0] == NULL || argv[1] != NULL) | |
9573 | error (_("Invalid parameters to remote delete")); | |
9574 | ||
9575 | remote_file_delete (argv[0], from_tty); | |
9576 | ||
9577 | do_cleanups (back_to); | |
9578 | } | |
9579 | ||
9580 | static void | |
9581 | remote_command (char *args, int from_tty) | |
9582 | { | |
9583 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
9584 | } | |
9585 | ||
b2175913 MS |
9586 | static int |
9587 | remote_can_execute_reverse (void) | |
9588 | { | |
40ab02ce MS |
9589 | if (remote_protocol_packets[PACKET_bs].support == PACKET_ENABLE |
9590 | || remote_protocol_packets[PACKET_bc].support == PACKET_ENABLE) | |
9591 | return 1; | |
9592 | else | |
9593 | return 0; | |
b2175913 MS |
9594 | } |
9595 | ||
74531fed PA |
9596 | static int |
9597 | remote_supports_non_stop (void) | |
9598 | { | |
9599 | return 1; | |
9600 | } | |
9601 | ||
8a305172 PA |
9602 | static int |
9603 | remote_supports_multi_process (void) | |
9604 | { | |
9605 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9606 | |
8a305172 PA |
9607 | return remote_multi_process_p (rs); |
9608 | } | |
9609 | ||
782b2b07 SS |
9610 | int |
9611 | remote_supports_cond_tracepoints (void) | |
9612 | { | |
9613 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9614 | |
782b2b07 SS |
9615 | return rs->cond_tracepoints; |
9616 | } | |
9617 | ||
7a697b8d SS |
9618 | int |
9619 | remote_supports_fast_tracepoints (void) | |
9620 | { | |
9621 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 9622 | |
7a697b8d SS |
9623 | return rs->fast_tracepoints; |
9624 | } | |
9625 | ||
0fb4aa4b PA |
9626 | static int |
9627 | remote_supports_static_tracepoints (void) | |
9628 | { | |
9629 | struct remote_state *rs = get_remote_state (); | |
9630 | ||
9631 | return rs->static_tracepoints; | |
9632 | } | |
9633 | ||
35b1e5cc | 9634 | static void |
ad91cd99 | 9635 | remote_trace_init (void) |
35b1e5cc SS |
9636 | { |
9637 | putpkt ("QTinit"); | |
9638 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 | 9639 | if (strcmp (target_buf, "OK") != 0) |
35b1e5cc SS |
9640 | error (_("Target does not support this command.")); |
9641 | } | |
9642 | ||
9643 | static void free_actions_list (char **actions_list); | |
9644 | static void free_actions_list_cleanup_wrapper (void *); | |
9645 | static void | |
9646 | free_actions_list_cleanup_wrapper (void *al) | |
9647 | { | |
9648 | free_actions_list (al); | |
9649 | } | |
9650 | ||
9651 | static void | |
9652 | free_actions_list (char **actions_list) | |
9653 | { | |
9654 | int ndx; | |
9655 | ||
9656 | if (actions_list == 0) | |
9657 | return; | |
9658 | ||
9659 | for (ndx = 0; actions_list[ndx]; ndx++) | |
9660 | xfree (actions_list[ndx]); | |
9661 | ||
9662 | xfree (actions_list); | |
9663 | } | |
9664 | ||
409873ef SS |
9665 | /* Recursive routine to walk through command list including loops, and |
9666 | download packets for each command. */ | |
9667 | ||
9668 | static void | |
9669 | remote_download_command_source (int num, ULONGEST addr, | |
9670 | struct command_line *cmds) | |
9671 | { | |
9672 | struct remote_state *rs = get_remote_state (); | |
9673 | struct command_line *cmd; | |
9674 | ||
9675 | for (cmd = cmds; cmd; cmd = cmd->next) | |
9676 | { | |
9677 | QUIT; /* allow user to bail out with ^C */ | |
9678 | strcpy (rs->buf, "QTDPsrc:"); | |
9679 | encode_source_string (num, addr, "cmd", cmd->line, | |
9680 | rs->buf + strlen (rs->buf), | |
9681 | rs->buf_size - strlen (rs->buf)); | |
9682 | putpkt (rs->buf); | |
9683 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9684 | if (strcmp (target_buf, "OK")) | |
9685 | warning (_("Target does not support source download.")); | |
9686 | ||
9687 | if (cmd->control_type == while_control | |
9688 | || cmd->control_type == while_stepping_control) | |
9689 | { | |
9690 | remote_download_command_source (num, addr, *cmd->body_list); | |
9691 | ||
9692 | QUIT; /* allow user to bail out with ^C */ | |
9693 | strcpy (rs->buf, "QTDPsrc:"); | |
9694 | encode_source_string (num, addr, "cmd", "end", | |
9695 | rs->buf + strlen (rs->buf), | |
9696 | rs->buf_size - strlen (rs->buf)); | |
9697 | putpkt (rs->buf); | |
9698 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9699 | if (strcmp (target_buf, "OK")) | |
9700 | warning (_("Target does not support source download.")); | |
9701 | } | |
9702 | } | |
9703 | } | |
9704 | ||
35b1e5cc SS |
9705 | static void |
9706 | remote_download_tracepoint (struct breakpoint *t) | |
9707 | { | |
9355b391 | 9708 | struct bp_location *loc; |
35b1e5cc | 9709 | CORE_ADDR tpaddr; |
409873ef | 9710 | char addrbuf[40]; |
35b1e5cc SS |
9711 | char buf[2048]; |
9712 | char **tdp_actions; | |
9713 | char **stepping_actions; | |
9714 | int ndx; | |
9715 | struct cleanup *old_chain = NULL; | |
9716 | struct agent_expr *aexpr; | |
9717 | struct cleanup *aexpr_chain = NULL; | |
9718 | char *pkt; | |
9719 | ||
9355b391 SS |
9720 | /* Iterate over all the tracepoint locations. It's up to the target to |
9721 | notice multiple tracepoint packets with the same number but different | |
9722 | addresses, and treat them as multiple locations. */ | |
9723 | for (loc = t->loc; loc; loc = loc->next) | |
9724 | { | |
9725 | encode_actions (t, loc, &tdp_actions, &stepping_actions); | |
9726 | old_chain = make_cleanup (free_actions_list_cleanup_wrapper, | |
9727 | tdp_actions); | |
3e43a32a MS |
9728 | (void) make_cleanup (free_actions_list_cleanup_wrapper, |
9729 | stepping_actions); | |
9355b391 SS |
9730 | |
9731 | tpaddr = loc->address; | |
409873ef | 9732 | sprintf_vma (addrbuf, tpaddr); |
9355b391 | 9733 | sprintf (buf, "QTDP:%x:%s:%c:%lx:%x", t->number, |
409873ef | 9734 | addrbuf, /* address */ |
9355b391 SS |
9735 | (t->enable_state == bp_enabled ? 'E' : 'D'), |
9736 | t->step_count, t->pass_count); | |
9737 | /* Fast tracepoints are mostly handled by the target, but we can | |
9738 | tell the target how big of an instruction block should be moved | |
9739 | around. */ | |
9740 | if (t->type == bp_fast_tracepoint) | |
35b1e5cc | 9741 | { |
9355b391 SS |
9742 | /* Only test for support at download time; we may not know |
9743 | target capabilities at definition time. */ | |
9744 | if (remote_supports_fast_tracepoints ()) | |
9745 | { | |
9746 | int isize; | |
35b1e5cc | 9747 | |
9355b391 SS |
9748 | if (gdbarch_fast_tracepoint_valid_at (target_gdbarch, |
9749 | tpaddr, &isize, NULL)) | |
9750 | sprintf (buf + strlen (buf), ":F%x", isize); | |
9751 | else | |
9752 | /* If it passed validation at definition but fails now, | |
9753 | something is very wrong. */ | |
9754 | internal_error (__FILE__, __LINE__, | |
9755 | "Fast tracepoint not valid during download"); | |
9756 | } | |
35b1e5cc | 9757 | else |
9355b391 SS |
9758 | /* Fast tracepoints are functionally identical to regular |
9759 | tracepoints, so don't take lack of support as a reason to | |
9760 | give up on the trace run. */ | |
3e43a32a MS |
9761 | warning (_("Target does not support fast tracepoints, " |
9762 | "downloading %d as regular tracepoint"), t->number); | |
35b1e5cc | 9763 | } |
0fb4aa4b PA |
9764 | else if (t->type == bp_static_tracepoint) |
9765 | { | |
9766 | /* Only test for support at download time; we may not know | |
9767 | target capabilities at definition time. */ | |
9768 | if (remote_supports_static_tracepoints ()) | |
9769 | { | |
9770 | struct static_tracepoint_marker marker; | |
9771 | ||
9772 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) | |
9773 | strcat (buf, ":S"); | |
9774 | else | |
74232302 | 9775 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b PA |
9776 | } |
9777 | else | |
9778 | /* Fast tracepoints are functionally identical to regular | |
9779 | tracepoints, so don't take lack of support as a reason | |
9780 | to give up on the trace run. */ | |
9781 | error (_("Target does not support static tracepoints")); | |
9782 | } | |
9355b391 SS |
9783 | /* If the tracepoint has a conditional, make it into an agent |
9784 | expression and append to the definition. */ | |
9785 | if (loc->cond) | |
35b1e5cc | 9786 | { |
9355b391 SS |
9787 | /* Only test support at download time, we may not know target |
9788 | capabilities at definition time. */ | |
9789 | if (remote_supports_cond_tracepoints ()) | |
9790 | { | |
9791 | aexpr = gen_eval_for_expr (tpaddr, loc->cond); | |
9792 | aexpr_chain = make_cleanup_free_agent_expr (aexpr); | |
9793 | sprintf (buf + strlen (buf), ":X%x,", aexpr->len); | |
9794 | pkt = buf + strlen (buf); | |
9795 | for (ndx = 0; ndx < aexpr->len; ++ndx) | |
9796 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); | |
9797 | *pkt = '\0'; | |
9798 | do_cleanups (aexpr_chain); | |
9799 | } | |
9800 | else | |
3e43a32a MS |
9801 | warning (_("Target does not support conditional tracepoints, " |
9802 | "ignoring tp %d cond"), t->number); | |
35b1e5cc | 9803 | } |
35b1e5cc | 9804 | |
a7bdde9e | 9805 | if (t->commands || *default_collect) |
9355b391 SS |
9806 | strcat (buf, "-"); |
9807 | putpkt (buf); | |
9808 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9809 | if (strcmp (target_buf, "OK")) | |
9810 | error (_("Target does not support tracepoints.")); | |
35b1e5cc | 9811 | |
9355b391 SS |
9812 | /* do_single_steps (t); */ |
9813 | if (tdp_actions) | |
35b1e5cc | 9814 | { |
9355b391 SS |
9815 | for (ndx = 0; tdp_actions[ndx]; ndx++) |
9816 | { | |
9817 | QUIT; /* allow user to bail out with ^C */ | |
9818 | sprintf (buf, "QTDP:-%x:%s:%s%c", | |
409873ef | 9819 | t->number, addrbuf, /* address */ |
9355b391 SS |
9820 | tdp_actions[ndx], |
9821 | ((tdp_actions[ndx + 1] || stepping_actions) | |
9822 | ? '-' : 0)); | |
9823 | putpkt (buf); | |
9824 | remote_get_noisy_reply (&target_buf, | |
9825 | &target_buf_size); | |
9826 | if (strcmp (target_buf, "OK")) | |
9827 | error (_("Error on target while setting tracepoints.")); | |
9828 | } | |
35b1e5cc | 9829 | } |
9355b391 | 9830 | if (stepping_actions) |
35b1e5cc | 9831 | { |
9355b391 SS |
9832 | for (ndx = 0; stepping_actions[ndx]; ndx++) |
9833 | { | |
9834 | QUIT; /* allow user to bail out with ^C */ | |
9835 | sprintf (buf, "QTDP:-%x:%s:%s%s%s", | |
409873ef | 9836 | t->number, addrbuf, /* address */ |
9355b391 SS |
9837 | ((ndx == 0) ? "S" : ""), |
9838 | stepping_actions[ndx], | |
9839 | (stepping_actions[ndx + 1] ? "-" : "")); | |
9840 | putpkt (buf); | |
9841 | remote_get_noisy_reply (&target_buf, | |
9842 | &target_buf_size); | |
9843 | if (strcmp (target_buf, "OK")) | |
9844 | error (_("Error on target while setting tracepoints.")); | |
9845 | } | |
35b1e5cc | 9846 | } |
409873ef | 9847 | |
3e43a32a MS |
9848 | if (remote_protocol_packets[PACKET_TracepointSource].support |
9849 | == PACKET_ENABLE) | |
409873ef SS |
9850 | { |
9851 | if (t->addr_string) | |
9852 | { | |
9853 | strcpy (buf, "QTDPsrc:"); | |
9854 | encode_source_string (t->number, loc->address, | |
9855 | "at", t->addr_string, buf + strlen (buf), | |
9856 | 2048 - strlen (buf)); | |
9857 | ||
9858 | putpkt (buf); | |
9859 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9860 | if (strcmp (target_buf, "OK")) | |
9861 | warning (_("Target does not support source download.")); | |
9862 | } | |
9863 | if (t->cond_string) | |
9864 | { | |
9865 | strcpy (buf, "QTDPsrc:"); | |
9866 | encode_source_string (t->number, loc->address, | |
9867 | "cond", t->cond_string, buf + strlen (buf), | |
9868 | 2048 - strlen (buf)); | |
9869 | putpkt (buf); | |
9870 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
9871 | if (strcmp (target_buf, "OK")) | |
9872 | warning (_("Target does not support source download.")); | |
9873 | } | |
9874 | remote_download_command_source (t->number, loc->address, | |
5cea2a26 | 9875 | breakpoint_commands (t)); |
409873ef SS |
9876 | } |
9877 | ||
9355b391 | 9878 | do_cleanups (old_chain); |
35b1e5cc | 9879 | } |
35b1e5cc SS |
9880 | } |
9881 | ||
9882 | static void | |
9883 | remote_download_trace_state_variable (struct trace_state_variable *tsv) | |
9884 | { | |
9885 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 9886 | char *p; |
35b1e5cc | 9887 | |
00bf0b85 SS |
9888 | sprintf (rs->buf, "QTDV:%x:%s:%x:", |
9889 | tsv->number, phex ((ULONGEST) tsv->initial_value, 8), tsv->builtin); | |
9890 | p = rs->buf + strlen (rs->buf); | |
9891 | if ((p - rs->buf) + strlen (tsv->name) * 2 >= get_remote_packet_size ()) | |
9892 | error (_("Trace state variable name too long for tsv definition packet")); | |
9893 | p += 2 * bin2hex ((gdb_byte *) (tsv->name), p, 0); | |
9894 | *p++ = '\0'; | |
35b1e5cc SS |
9895 | putpkt (rs->buf); |
9896 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
9897 | if (*target_buf == '\0') |
9898 | error (_("Target does not support this command.")); | |
9899 | if (strcmp (target_buf, "OK") != 0) | |
9900 | error (_("Error on target while downloading trace state variable.")); | |
35b1e5cc SS |
9901 | } |
9902 | ||
9903 | static void | |
ad91cd99 | 9904 | remote_trace_set_readonly_regions (void) |
35b1e5cc SS |
9905 | { |
9906 | asection *s; | |
9907 | bfd_size_type size; | |
608bcef2 | 9908 | bfd_vma vma; |
35b1e5cc SS |
9909 | int anysecs = 0; |
9910 | ||
9911 | if (!exec_bfd) | |
9912 | return; /* No information to give. */ | |
9913 | ||
9914 | strcpy (target_buf, "QTro"); | |
9915 | for (s = exec_bfd->sections; s; s = s->next) | |
9916 | { | |
9917 | char tmp1[40], tmp2[40]; | |
9918 | ||
9919 | if ((s->flags & SEC_LOAD) == 0 || | |
9920 | /* (s->flags & SEC_CODE) == 0 || */ | |
9921 | (s->flags & SEC_READONLY) == 0) | |
9922 | continue; | |
9923 | ||
9924 | anysecs = 1; | |
608bcef2 | 9925 | vma = bfd_get_section_vma (,s); |
35b1e5cc | 9926 | size = bfd_get_section_size (s); |
608bcef2 HZ |
9927 | sprintf_vma (tmp1, vma); |
9928 | sprintf_vma (tmp2, vma + size); | |
35b1e5cc SS |
9929 | sprintf (target_buf + strlen (target_buf), |
9930 | ":%s,%s", tmp1, tmp2); | |
9931 | } | |
9932 | if (anysecs) | |
9933 | { | |
9934 | putpkt (target_buf); | |
9935 | getpkt (&target_buf, &target_buf_size, 0); | |
9936 | } | |
9937 | } | |
9938 | ||
9939 | static void | |
ad91cd99 | 9940 | remote_trace_start (void) |
35b1e5cc SS |
9941 | { |
9942 | putpkt ("QTStart"); | |
9943 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
9944 | if (*target_buf == '\0') |
9945 | error (_("Target does not support this command.")); | |
9946 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
9947 | error (_("Bogus reply from target: %s"), target_buf); |
9948 | } | |
9949 | ||
9950 | static int | |
00bf0b85 | 9951 | remote_get_trace_status (struct trace_status *ts) |
35b1e5cc | 9952 | { |
aa369b55 | 9953 | char *p; |
00bf0b85 SS |
9954 | /* FIXME we need to get register block size some other way */ |
9955 | extern int trace_regblock_size; | |
a744cf53 | 9956 | |
00bf0b85 SS |
9957 | trace_regblock_size = get_remote_arch_state ()->sizeof_g_packet; |
9958 | ||
35b1e5cc | 9959 | putpkt ("qTStatus"); |
ad91cd99 | 9960 | p = remote_get_noisy_reply (&target_buf, &target_buf_size); |
00bf0b85 SS |
9961 | |
9962 | /* If the remote target doesn't do tracing, flag it. */ | |
9963 | if (*p == '\0') | |
9964 | return -1; | |
35b1e5cc | 9965 | |
00bf0b85 SS |
9966 | /* We're working with a live target. */ |
9967 | ts->from_file = 0; | |
9968 | ||
9969 | /* Set some defaults. */ | |
9970 | ts->running_known = 0; | |
9971 | ts->stop_reason = trace_stop_reason_unknown; | |
9972 | ts->traceframe_count = -1; | |
9973 | ts->buffer_free = 0; | |
9974 | ||
9975 | if (*p++ != 'T') | |
35b1e5cc SS |
9976 | error (_("Bogus trace status reply from target: %s"), target_buf); |
9977 | ||
00bf0b85 SS |
9978 | parse_trace_status (p, ts); |
9979 | ||
9980 | return ts->running; | |
35b1e5cc SS |
9981 | } |
9982 | ||
9983 | static void | |
ad91cd99 | 9984 | remote_trace_stop (void) |
35b1e5cc SS |
9985 | { |
9986 | putpkt ("QTStop"); | |
9987 | remote_get_noisy_reply (&target_buf, &target_buf_size); | |
ad91cd99 PA |
9988 | if (*target_buf == '\0') |
9989 | error (_("Target does not support this command.")); | |
9990 | if (strcmp (target_buf, "OK") != 0) | |
35b1e5cc SS |
9991 | error (_("Bogus reply from target: %s"), target_buf); |
9992 | } | |
9993 | ||
9994 | static int | |
9995 | remote_trace_find (enum trace_find_type type, int num, | |
9996 | ULONGEST addr1, ULONGEST addr2, | |
9997 | int *tpp) | |
9998 | { | |
9999 | struct remote_state *rs = get_remote_state (); | |
10000 | char *p, *reply; | |
10001 | int target_frameno = -1, target_tracept = -1; | |
10002 | ||
10003 | p = rs->buf; | |
10004 | strcpy (p, "QTFrame:"); | |
10005 | p = strchr (p, '\0'); | |
10006 | switch (type) | |
10007 | { | |
10008 | case tfind_number: | |
10009 | sprintf (p, "%x", num); | |
10010 | break; | |
10011 | case tfind_pc: | |
00bf0b85 | 10012 | sprintf (p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
10013 | break; |
10014 | case tfind_tp: | |
10015 | sprintf (p, "tdp:%x", num); | |
10016 | break; | |
10017 | case tfind_range: | |
00bf0b85 | 10018 | sprintf (p, "range:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10019 | break; |
10020 | case tfind_outside: | |
00bf0b85 | 10021 | sprintf (p, "outside:%s:%s", phex_nz (addr1, 0), phex_nz (addr2, 0)); |
35b1e5cc SS |
10022 | break; |
10023 | default: | |
10024 | error ("Unknown trace find type %d", type); | |
10025 | } | |
10026 | ||
10027 | putpkt (rs->buf); | |
10028 | reply = remote_get_noisy_reply (&(rs->buf), &sizeof_pkt); | |
ad91cd99 PA |
10029 | if (*reply == '\0') |
10030 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
10031 | |
10032 | while (reply && *reply) | |
10033 | switch (*reply) | |
10034 | { | |
10035 | case 'F': | |
f197e0f1 VP |
10036 | p = ++reply; |
10037 | target_frameno = (int) strtol (p, &reply, 16); | |
10038 | if (reply == p) | |
10039 | error (_("Unable to parse trace frame number")); | |
10040 | if (target_frameno == -1) | |
10041 | return -1; | |
35b1e5cc SS |
10042 | break; |
10043 | case 'T': | |
f197e0f1 VP |
10044 | p = ++reply; |
10045 | target_tracept = (int) strtol (p, &reply, 16); | |
10046 | if (reply == p) | |
10047 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
10048 | break; |
10049 | case 'O': /* "OK"? */ | |
10050 | if (reply[1] == 'K' && reply[2] == '\0') | |
10051 | reply += 2; | |
10052 | else | |
10053 | error (_("Bogus reply from target: %s"), reply); | |
10054 | break; | |
10055 | default: | |
10056 | error (_("Bogus reply from target: %s"), reply); | |
10057 | } | |
10058 | if (tpp) | |
10059 | *tpp = target_tracept; | |
10060 | return target_frameno; | |
10061 | } | |
10062 | ||
10063 | static int | |
10064 | remote_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
10065 | { | |
10066 | struct remote_state *rs = get_remote_state (); | |
10067 | char *reply; | |
10068 | ULONGEST uval; | |
10069 | ||
10070 | sprintf (rs->buf, "qTV:%x", tsvnum); | |
10071 | putpkt (rs->buf); | |
10072 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10073 | if (reply && *reply) | |
10074 | { | |
10075 | if (*reply == 'V') | |
10076 | { | |
10077 | unpack_varlen_hex (reply + 1, &uval); | |
10078 | *val = (LONGEST) uval; | |
10079 | return 1; | |
10080 | } | |
10081 | } | |
10082 | return 0; | |
10083 | } | |
10084 | ||
00bf0b85 | 10085 | static int |
011aacb0 | 10086 | remote_save_trace_data (const char *filename) |
00bf0b85 SS |
10087 | { |
10088 | struct remote_state *rs = get_remote_state (); | |
10089 | char *p, *reply; | |
10090 | ||
10091 | p = rs->buf; | |
10092 | strcpy (p, "QTSave:"); | |
10093 | p += strlen (p); | |
10094 | if ((p - rs->buf) + strlen (filename) * 2 >= get_remote_packet_size ()) | |
10095 | error (_("Remote file name too long for trace save packet")); | |
10096 | p += 2 * bin2hex ((gdb_byte *) filename, p, 0); | |
10097 | *p++ = '\0'; | |
10098 | putpkt (rs->buf); | |
ad91cd99 PA |
10099 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10100 | if (*reply != '\0') | |
10101 | error (_("Target does not support this command.")); | |
10102 | if (strcmp (reply, "OK") != 0) | |
10103 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
10104 | return 0; |
10105 | } | |
10106 | ||
10107 | /* This is basically a memory transfer, but needs to be its own packet | |
10108 | because we don't know how the target actually organizes its trace | |
10109 | memory, plus we want to be able to ask for as much as possible, but | |
10110 | not be unhappy if we don't get as much as we ask for. */ | |
10111 | ||
10112 | static LONGEST | |
10113 | remote_get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
10114 | { | |
10115 | struct remote_state *rs = get_remote_state (); | |
10116 | char *reply; | |
10117 | char *p; | |
10118 | int rslt; | |
10119 | ||
10120 | p = rs->buf; | |
10121 | strcpy (p, "qTBuffer:"); | |
10122 | p += strlen (p); | |
10123 | p += hexnumstr (p, offset); | |
10124 | *p++ = ','; | |
10125 | p += hexnumstr (p, len); | |
10126 | *p++ = '\0'; | |
10127 | ||
10128 | putpkt (rs->buf); | |
10129 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); | |
10130 | if (reply && *reply) | |
10131 | { | |
10132 | /* 'l' by itself means we're at the end of the buffer and | |
10133 | there is nothing more to get. */ | |
10134 | if (*reply == 'l') | |
10135 | return 0; | |
10136 | ||
10137 | /* Convert the reply into binary. Limit the number of bytes to | |
10138 | convert according to our passed-in buffer size, rather than | |
10139 | what was returned in the packet; if the target is | |
10140 | unexpectedly generous and gives us a bigger reply than we | |
10141 | asked for, we don't want to crash. */ | |
10142 | rslt = hex2bin (target_buf, buf, len); | |
10143 | return rslt; | |
10144 | } | |
10145 | ||
10146 | /* Something went wrong, flag as an error. */ | |
10147 | return -1; | |
10148 | } | |
10149 | ||
35b1e5cc SS |
10150 | static void |
10151 | remote_set_disconnected_tracing (int val) | |
10152 | { | |
10153 | struct remote_state *rs = get_remote_state (); | |
10154 | ||
33da3f1c SS |
10155 | if (rs->disconnected_tracing) |
10156 | { | |
ad91cd99 PA |
10157 | char *reply; |
10158 | ||
33da3f1c SS |
10159 | sprintf (rs->buf, "QTDisconnected:%x", val); |
10160 | putpkt (rs->buf); | |
ad91cd99 PA |
10161 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10162 | if (*reply == '\0') | |
33da3f1c | 10163 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10164 | if (strcmp (reply, "OK") != 0) |
10165 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
10166 | } |
10167 | else if (val) | |
10168 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
10169 | } |
10170 | ||
dc146f7c VP |
10171 | static int |
10172 | remote_core_of_thread (struct target_ops *ops, ptid_t ptid) | |
10173 | { | |
10174 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 10175 | |
dc146f7c VP |
10176 | if (info && info->private) |
10177 | return info->private->core; | |
10178 | return -1; | |
10179 | } | |
10180 | ||
4daf5ac0 SS |
10181 | static void |
10182 | remote_set_circular_trace_buffer (int val) | |
10183 | { | |
10184 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 10185 | char *reply; |
4daf5ac0 SS |
10186 | |
10187 | sprintf (rs->buf, "QTBuffer:circular:%x", val); | |
10188 | putpkt (rs->buf); | |
ad91cd99 PA |
10189 | reply = remote_get_noisy_reply (&target_buf, &target_buf_size); |
10190 | if (*reply == '\0') | |
4daf5ac0 | 10191 | error (_("Target does not support this command.")); |
ad91cd99 PA |
10192 | if (strcmp (reply, "OK") != 0) |
10193 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
10194 | } |
10195 | ||
c906108c | 10196 | static void |
fba45db2 | 10197 | init_remote_ops (void) |
c906108c | 10198 | { |
c5aa993b | 10199 | remote_ops.to_shortname = "remote"; |
c906108c | 10200 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 10201 | remote_ops.to_doc = |
c906108c | 10202 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
10203 | Specify the serial device it is connected to\n\ |
10204 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
10205 | remote_ops.to_open = remote_open; |
10206 | remote_ops.to_close = remote_close; | |
c906108c | 10207 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 10208 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 10209 | remote_ops.to_resume = remote_resume; |
c906108c SS |
10210 | remote_ops.to_wait = remote_wait; |
10211 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
10212 | remote_ops.to_store_registers = remote_store_registers; | |
10213 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 10214 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 10215 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
10216 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
10217 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
10218 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
10219 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
10220 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
10221 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
10222 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
10223 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
10224 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
10225 | remote_ops.to_kill = remote_kill; |
10226 | remote_ops.to_load = generic_load; | |
c906108c | 10227 | remote_ops.to_mourn_inferior = remote_mourn; |
f0223081 | 10228 | remote_ops.to_notice_signals = remote_notice_signals; |
c906108c | 10229 | remote_ops.to_thread_alive = remote_thread_alive; |
0f71a2f6 | 10230 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 10231 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 10232 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
10760264 | 10233 | remote_ops.to_get_ada_task_ptid = remote_get_ada_task_ptid; |
c906108c | 10234 | remote_ops.to_stop = remote_stop; |
4b8a223f | 10235 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 10236 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 10237 | remote_ops.to_log_command = serial_log_command; |
38691318 | 10238 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 10239 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
10240 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
10241 | remote_ops.to_has_memory = default_child_has_memory; | |
10242 | remote_ops.to_has_stack = default_child_has_stack; | |
10243 | remote_ops.to_has_registers = default_child_has_registers; | |
10244 | remote_ops.to_has_execution = default_child_has_execution; | |
3e43a32a | 10245 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 10246 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 10247 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 10248 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
10249 | remote_ops.to_flash_erase = remote_flash_erase; |
10250 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 10251 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 10252 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
10253 | remote_ops.to_can_async_p = remote_can_async_p; |
10254 | remote_ops.to_is_async_p = remote_is_async_p; | |
10255 | remote_ops.to_async = remote_async; | |
10256 | remote_ops.to_async_mask = remote_async_mask; | |
10257 | remote_ops.to_terminal_inferior = remote_terminal_inferior; | |
10258 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 10259 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 10260 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
35b1e5cc SS |
10261 | remote_ops.to_trace_init = remote_trace_init; |
10262 | remote_ops.to_download_tracepoint = remote_download_tracepoint; | |
3e43a32a MS |
10263 | remote_ops.to_download_trace_state_variable |
10264 | = remote_download_trace_state_variable; | |
35b1e5cc SS |
10265 | remote_ops.to_trace_set_readonly_regions = remote_trace_set_readonly_regions; |
10266 | remote_ops.to_trace_start = remote_trace_start; | |
10267 | remote_ops.to_get_trace_status = remote_get_trace_status; | |
10268 | remote_ops.to_trace_stop = remote_trace_stop; | |
10269 | remote_ops.to_trace_find = remote_trace_find; | |
3e43a32a MS |
10270 | remote_ops.to_get_trace_state_variable_value |
10271 | = remote_get_trace_state_variable_value; | |
00bf0b85 SS |
10272 | remote_ops.to_save_trace_data = remote_save_trace_data; |
10273 | remote_ops.to_upload_tracepoints = remote_upload_tracepoints; | |
3e43a32a MS |
10274 | remote_ops.to_upload_trace_state_variables |
10275 | = remote_upload_trace_state_variables; | |
00bf0b85 | 10276 | remote_ops.to_get_raw_trace_data = remote_get_raw_trace_data; |
35b1e5cc | 10277 | remote_ops.to_set_disconnected_tracing = remote_set_disconnected_tracing; |
4daf5ac0 | 10278 | remote_ops.to_set_circular_trace_buffer = remote_set_circular_trace_buffer; |
dc146f7c | 10279 | remote_ops.to_core_of_thread = remote_core_of_thread; |
4a5e7a5b | 10280 | remote_ops.to_verify_memory = remote_verify_memory; |
711e434b | 10281 | remote_ops.to_get_tib_address = remote_get_tib_address; |
d914c394 | 10282 | remote_ops.to_set_permissions = remote_set_permissions; |
0fb4aa4b PA |
10283 | remote_ops.to_static_tracepoint_marker_at |
10284 | = remote_static_tracepoint_marker_at; | |
10285 | remote_ops.to_static_tracepoint_markers_by_strid | |
10286 | = remote_static_tracepoint_markers_by_strid; | |
c906108c SS |
10287 | } |
10288 | ||
10289 | /* Set up the extended remote vector by making a copy of the standard | |
10290 | remote vector and adding to it. */ | |
10291 | ||
10292 | static void | |
fba45db2 | 10293 | init_extended_remote_ops (void) |
c906108c SS |
10294 | { |
10295 | extended_remote_ops = remote_ops; | |
10296 | ||
0f71a2f6 | 10297 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 10298 | extended_remote_ops.to_longname = |
c906108c | 10299 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 10300 | extended_remote_ops.to_doc = |
c906108c | 10301 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
10302 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
10303 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
10304 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
10305 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
10306 | extended_remote_ops.to_detach = extended_remote_detach; |
10307 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 10308 | extended_remote_ops.to_kill = extended_remote_kill; |
0f71a2f6 JM |
10309 | } |
10310 | ||
6426a772 JM |
10311 | static int |
10312 | remote_can_async_p (void) | |
10313 | { | |
c6ebd6cf | 10314 | if (!target_async_permitted) |
75c99385 PA |
10315 | /* We only enable async when the user specifically asks for it. */ |
10316 | return 0; | |
10317 | ||
23860348 | 10318 | /* We're async whenever the serial device is. */ |
b84876c2 | 10319 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
10320 | } |
10321 | ||
10322 | static int | |
10323 | remote_is_async_p (void) | |
10324 | { | |
c6ebd6cf | 10325 | if (!target_async_permitted) |
75c99385 PA |
10326 | /* We only enable async when the user specifically asks for it. */ |
10327 | return 0; | |
10328 | ||
23860348 | 10329 | /* We're async whenever the serial device is. */ |
b84876c2 | 10330 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
10331 | } |
10332 | ||
2acceee2 JM |
10333 | /* Pass the SERIAL event on and up to the client. One day this code |
10334 | will be able to delay notifying the client of an event until the | |
23860348 | 10335 | point where an entire packet has been received. */ |
2acceee2 | 10336 | |
2bc416ba | 10337 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 10338 | void *context); |
2acceee2 JM |
10339 | static void *async_client_context; |
10340 | static serial_event_ftype remote_async_serial_handler; | |
10341 | ||
6426a772 | 10342 | static void |
819cc324 | 10343 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 10344 | { |
2acceee2 JM |
10345 | /* Don't propogate error information up to the client. Instead let |
10346 | the client find out about the error by querying the target. */ | |
10347 | async_client_callback (INF_REG_EVENT, async_client_context); | |
10348 | } | |
10349 | ||
74531fed PA |
10350 | static void |
10351 | remote_async_inferior_event_handler (gdb_client_data data) | |
10352 | { | |
10353 | inferior_event_handler (INF_REG_EVENT, NULL); | |
10354 | } | |
10355 | ||
10356 | static void | |
10357 | remote_async_get_pending_events_handler (gdb_client_data data) | |
10358 | { | |
10359 | remote_get_pending_stop_replies (); | |
10360 | } | |
10361 | ||
2acceee2 | 10362 | static void |
2bc416ba | 10363 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 10364 | void *context), void *context) |
2acceee2 | 10365 | { |
b84876c2 | 10366 | if (remote_async_mask_value == 0) |
8e65ff28 | 10367 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10368 | _("Calling remote_async when async is masked")); |
ed9a39eb | 10369 | |
2acceee2 JM |
10370 | if (callback != NULL) |
10371 | { | |
2cd58942 | 10372 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
10373 | async_client_callback = callback; |
10374 | async_client_context = context; | |
10375 | } | |
10376 | else | |
2cd58942 | 10377 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
10378 | } |
10379 | ||
b84876c2 PA |
10380 | static int |
10381 | remote_async_mask (int new_mask) | |
10382 | { | |
10383 | int curr_mask = remote_async_mask_value; | |
a744cf53 | 10384 | |
b84876c2 PA |
10385 | remote_async_mask_value = new_mask; |
10386 | return curr_mask; | |
10387 | } | |
10388 | ||
5a2468f5 | 10389 | static void |
c2d11a7d | 10390 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 10391 | { |
427c3a89 | 10392 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
10393 | } |
10394 | ||
d471ea57 AC |
10395 | static void |
10396 | show_remote_cmd (char *args, int from_tty) | |
10397 | { | |
37a105a1 | 10398 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 10399 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
10400 | struct cleanup *showlist_chain; |
10401 | struct cmd_list_element *list = remote_show_cmdlist; | |
10402 | ||
10403 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
10404 | for (; list != NULL; list = list->next) | |
10405 | if (strcmp (list->name, "Z-packet") == 0) | |
10406 | continue; | |
427c3a89 DJ |
10407 | else if (list->type == not_set_cmd) |
10408 | /* Alias commands are exactly like the original, except they | |
10409 | don't have the normal type. */ | |
10410 | continue; | |
10411 | else | |
37a105a1 DJ |
10412 | { |
10413 | struct cleanup *option_chain | |
10414 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
a744cf53 | 10415 | |
37a105a1 DJ |
10416 | ui_out_field_string (uiout, "name", list->name); |
10417 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
10418 | if (list->type == show_cmd) |
10419 | do_setshow_command ((char *) NULL, from_tty, list); | |
10420 | else | |
10421 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
10422 | /* Close the tuple. */ |
10423 | do_cleanups (option_chain); | |
10424 | } | |
427c3a89 DJ |
10425 | |
10426 | /* Close the tuple. */ | |
10427 | do_cleanups (showlist_chain); | |
d471ea57 | 10428 | } |
5a2468f5 | 10429 | |
0f71a2f6 | 10430 | |
23860348 | 10431 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
10432 | static void |
10433 | remote_new_objfile (struct objfile *objfile) | |
10434 | { | |
23860348 | 10435 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 10436 | remote_check_symbols (objfile); |
dc8acb97 MS |
10437 | } |
10438 | ||
00bf0b85 SS |
10439 | /* Pull all the tracepoints defined on the target and create local |
10440 | data structures representing them. We don't want to create real | |
10441 | tracepoints yet, we don't want to mess up the user's existing | |
10442 | collection. */ | |
10443 | ||
10444 | static int | |
10445 | remote_upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 10446 | { |
00bf0b85 SS |
10447 | struct remote_state *rs = get_remote_state (); |
10448 | char *p; | |
d5551862 | 10449 | |
00bf0b85 SS |
10450 | /* Ask for a first packet of tracepoint definition. */ |
10451 | putpkt ("qTfP"); | |
10452 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10453 | p = rs->buf; | |
10454 | while (*p && *p != 'l') | |
d5551862 | 10455 | { |
00bf0b85 SS |
10456 | parse_tracepoint_definition (p, utpp); |
10457 | /* Ask for another packet of tracepoint definition. */ | |
10458 | putpkt ("qTsP"); | |
10459 | getpkt (&rs->buf, &rs->buf_size, 0); | |
10460 | p = rs->buf; | |
d5551862 | 10461 | } |
00bf0b85 | 10462 | return 0; |
d5551862 SS |
10463 | } |
10464 | ||
00bf0b85 SS |
10465 | static int |
10466 | remote_upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 10467 | { |
00bf0b85 | 10468 | struct remote_state *rs = get_remote_state (); |
d5551862 | 10469 | char *p; |
d5551862 | 10470 | |
00bf0b85 SS |
10471 | /* Ask for a first packet of variable definition. */ |
10472 | putpkt ("qTfV"); | |
d5551862 SS |
10473 | getpkt (&rs->buf, &rs->buf_size, 0); |
10474 | p = rs->buf; | |
00bf0b85 | 10475 | while (*p && *p != 'l') |
d5551862 | 10476 | { |
00bf0b85 SS |
10477 | parse_tsv_definition (p, utsvp); |
10478 | /* Ask for another packet of variable definition. */ | |
10479 | putpkt ("qTsV"); | |
d5551862 SS |
10480 | getpkt (&rs->buf, &rs->buf_size, 0); |
10481 | p = rs->buf; | |
10482 | } | |
00bf0b85 | 10483 | return 0; |
d5551862 SS |
10484 | } |
10485 | ||
c906108c | 10486 | void |
fba45db2 | 10487 | _initialize_remote (void) |
c906108c | 10488 | { |
ea9c271d | 10489 | struct remote_state *rs; |
9a7071a8 JB |
10490 | struct cmd_list_element *cmd; |
10491 | char *cmd_name; | |
ea9c271d | 10492 | |
0f71a2f6 | 10493 | /* architecture specific data */ |
2bc416ba | 10494 | remote_gdbarch_data_handle = |
23860348 | 10495 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
10496 | remote_g_packet_data_handle = |
10497 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 10498 | |
ea9c271d DJ |
10499 | /* Initialize the per-target state. At the moment there is only one |
10500 | of these, not one per target. Only one target is active at a | |
10501 | time. The default buffer size is unimportant; it will be expanded | |
10502 | whenever a larger buffer is needed. */ | |
0b83947e | 10503 | rs = get_remote_state_raw (); |
ea9c271d DJ |
10504 | rs->buf_size = 400; |
10505 | rs->buf = xmalloc (rs->buf_size); | |
10506 | ||
c906108c SS |
10507 | init_remote_ops (); |
10508 | add_target (&remote_ops); | |
10509 | ||
10510 | init_extended_remote_ops (); | |
10511 | add_target (&extended_remote_ops); | |
cce74817 | 10512 | |
dc8acb97 | 10513 | /* Hook into new objfile notification. */ |
06d3b283 | 10514 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 10515 | |
b803fb0f DJ |
10516 | /* Set up signal handlers. */ |
10517 | sigint_remote_token = | |
10518 | create_async_signal_handler (async_remote_interrupt, NULL); | |
10519 | sigint_remote_twice_token = | |
10520 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
10521 | ||
c906108c SS |
10522 | #if 0 |
10523 | init_remote_threadtests (); | |
10524 | #endif | |
10525 | ||
23860348 | 10526 | /* set/show remote ... */ |
d471ea57 | 10527 | |
1bedd215 | 10528 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
10529 | Remote protocol specific variables\n\ |
10530 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10531 | the packets being used"), |
cff3e48b | 10532 | &remote_set_cmdlist, "set remote ", |
23860348 | 10533 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 10534 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
10535 | Remote protocol specific variables\n\ |
10536 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 10537 | the packets being used"), |
cff3e48b | 10538 | &remote_show_cmdlist, "show remote ", |
23860348 | 10539 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 10540 | |
1a966eab AC |
10541 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
10542 | Compare section data on target to the exec file.\n\ | |
10543 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
10544 | &cmdlist); |
10545 | ||
1a966eab AC |
10546 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
10547 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
10548 | maintenance packet TEXT\n\ |
10549 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
10550 | this command sends the string TEXT to the inferior, and displays the\n\ | |
10551 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 10552 | terminating `#' character and checksum."), |
c906108c SS |
10553 | &maintenancelist); |
10554 | ||
7915a72c AC |
10555 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
10556 | Set whether to send break if interrupted."), _("\ | |
10557 | Show whether to send break if interrupted."), _("\ | |
10558 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 10559 | set_remotebreak, show_remotebreak, |
e707bbc2 | 10560 | &setlist, &showlist); |
9a7071a8 JB |
10561 | cmd_name = "remotebreak"; |
10562 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
10563 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
10564 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
10565 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
10566 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
10567 | ||
10568 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
10569 | interrupt_sequence_modes, &interrupt_sequence_mode, |
10570 | _("\ | |
9a7071a8 JB |
10571 | Set interrupt sequence to remote target."), _("\ |
10572 | Show interrupt sequence to remote target."), _("\ | |
10573 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
10574 | NULL, show_interrupt_sequence, | |
10575 | &remote_set_cmdlist, | |
10576 | &remote_show_cmdlist); | |
10577 | ||
10578 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
10579 | &interrupt_on_connect, _("\ | |
10580 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10581 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \ | |
10582 | If set, interrupt sequence is sent to remote target."), | |
10583 | NULL, NULL, | |
10584 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 10585 | |
23860348 | 10586 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 10587 | |
1a966eab AC |
10588 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
10589 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 10590 | &setlist); |
1a966eab AC |
10591 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
10592 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
10593 | &showlist); |
10594 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
10595 | set_memory_write_packet_size, _("\ |
10596 | Set the maximum number of bytes per memory-write packet.\n\ | |
10597 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10598 | default packet size. The actual limit is further reduced\n\ | |
10599 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10600 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10601 | &remote_set_cmdlist); |
10602 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
10603 | set_memory_read_packet_size, _("\ |
10604 | Set the maximum number of bytes per memory-read packet.\n\ | |
10605 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
10606 | default packet size. The actual limit is further reduced\n\ | |
10607 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
10608 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
10609 | &remote_set_cmdlist); |
10610 | add_cmd ("memory-write-packet-size", no_class, | |
10611 | show_memory_write_packet_size, | |
1a966eab | 10612 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
10613 | &remote_show_cmdlist); |
10614 | add_cmd ("memory-read-packet-size", no_class, | |
10615 | show_memory_read_packet_size, | |
1a966eab | 10616 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 10617 | &remote_show_cmdlist); |
c906108c | 10618 | |
b3f42336 | 10619 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
10620 | &remote_hw_watchpoint_limit, _("\ |
10621 | Set the maximum number of target hardware watchpoints."), _("\ | |
10622 | Show the maximum number of target hardware watchpoints."), _("\ | |
10623 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
10624 | NULL, NULL, /* FIXME: i18n: The maximum |
10625 | number of target hardware | |
10626 | watchpoints is %s. */ | |
b3f42336 AC |
10627 | &remote_set_cmdlist, &remote_show_cmdlist); |
10628 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
10629 | &remote_hw_breakpoint_limit, _("\ |
10630 | Set the maximum number of target hardware breakpoints."), _("\ | |
10631 | Show the maximum number of target hardware breakpoints."), _("\ | |
10632 | Specify a negative limit for unlimited."), | |
3e43a32a MS |
10633 | NULL, NULL, /* FIXME: i18n: The maximum |
10634 | number of target hardware | |
10635 | breakpoints is %s. */ | |
b3f42336 | 10636 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 10637 | |
4d28ad1e AC |
10638 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
10639 | &remote_address_size, _("\ | |
10640 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
10641 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
10642 | NULL, | |
10643 | NULL, /* FIXME: i18n: */ | |
10644 | &setlist, &showlist); | |
c906108c | 10645 | |
444abaca | 10646 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 10647 | "X", "binary-download", 1); |
0f71a2f6 | 10648 | |
444abaca | 10649 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 10650 | "vCont", "verbose-resume", 0); |
506fb367 | 10651 | |
89be2091 DJ |
10652 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
10653 | "QPassSignals", "pass-signals", 0); | |
10654 | ||
444abaca | 10655 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 10656 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 10657 | |
444abaca | 10658 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 10659 | "P", "set-register", 1); |
d471ea57 | 10660 | |
444abaca | 10661 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 10662 | "p", "fetch-register", 1); |
b96ec7ac | 10663 | |
444abaca | 10664 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 10665 | "Z0", "software-breakpoint", 0); |
d471ea57 | 10666 | |
444abaca | 10667 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 10668 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 10669 | |
444abaca | 10670 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 10671 | "Z2", "write-watchpoint", 0); |
d471ea57 | 10672 | |
444abaca | 10673 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 10674 | "Z3", "read-watchpoint", 0); |
d471ea57 | 10675 | |
444abaca | 10676 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 10677 | "Z4", "access-watchpoint", 0); |
d471ea57 | 10678 | |
0876f84a DJ |
10679 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
10680 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 10681 | |
23181151 DJ |
10682 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
10683 | "qXfer:features:read", "target-features", 0); | |
10684 | ||
cfa9d6d9 DJ |
10685 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
10686 | "qXfer:libraries:read", "library-info", 0); | |
10687 | ||
fd79ecee DJ |
10688 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
10689 | "qXfer:memory-map:read", "memory-map", 0); | |
10690 | ||
0e7f50da UW |
10691 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
10692 | "qXfer:spu:read", "read-spu-object", 0); | |
10693 | ||
10694 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
10695 | "qXfer:spu:write", "write-spu-object", 0); | |
10696 | ||
07e059b5 VP |
10697 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
10698 | "qXfer:osdata:read", "osdata", 0); | |
10699 | ||
dc146f7c VP |
10700 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
10701 | "qXfer:threads:read", "threads", 0); | |
10702 | ||
4aa995e1 PA |
10703 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
10704 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
10705 | ||
10706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
10707 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
10708 | ||
444abaca | 10709 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 10710 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
10711 | 0); |
10712 | ||
711e434b PM |
10713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
10714 | "qGetTIBAddr", "get-thread-information-block-address", | |
10715 | 0); | |
10716 | ||
40ab02ce MS |
10717 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
10718 | "bc", "reverse-continue", 0); | |
10719 | ||
10720 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
10721 | "bs", "reverse-step", 0); | |
10722 | ||
be2a5f71 DJ |
10723 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
10724 | "qSupported", "supported-packets", 0); | |
10725 | ||
08388c79 DE |
10726 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
10727 | "qSearch:memory", "search-memory", 0); | |
10728 | ||
a6b151f1 DJ |
10729 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
10730 | "vFile:open", "hostio-open", 0); | |
10731 | ||
10732 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
10733 | "vFile:pread", "hostio-pread", 0); | |
10734 | ||
10735 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
10736 | "vFile:pwrite", "hostio-pwrite", 0); | |
10737 | ||
10738 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
10739 | "vFile:close", "hostio-close", 0); | |
10740 | ||
10741 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
10742 | "vFile:unlink", "hostio-unlink", 0); | |
10743 | ||
2d717e4f DJ |
10744 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
10745 | "vAttach", "attach", 0); | |
10746 | ||
10747 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
10748 | "vRun", "run", 0); | |
10749 | ||
a6f3e723 SL |
10750 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
10751 | "QStartNoAckMode", "noack", 0); | |
10752 | ||
82f73884 PA |
10753 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
10754 | "vKill", "kill", 0); | |
10755 | ||
0b16c5cf PA |
10756 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
10757 | "qAttached", "query-attached", 0); | |
10758 | ||
782b2b07 | 10759 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
10760 | "ConditionalTracepoints", |
10761 | "conditional-tracepoints", 0); | |
7a697b8d SS |
10762 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
10763 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 10764 | |
409873ef SS |
10765 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
10766 | "TracepointSource", "TracepointSource", 0); | |
10767 | ||
d914c394 SS |
10768 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
10769 | "QAllow", "allow", 0); | |
10770 | ||
0fb4aa4b PA |
10771 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
10772 | "StaticTracepoints", "static-tracepoints", 0); | |
10773 | ||
10774 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], | |
10775 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
10776 | ||
37a105a1 DJ |
10777 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
10778 | Z sub-packet has its own set and show commands, but users may | |
10779 | have sets to this variable in their .gdbinit files (or in their | |
10780 | documentation). */ | |
e9e68a56 | 10781 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
10782 | &remote_Z_packet_detect, _("\ |
10783 | Set use of remote protocol `Z' packets"), _("\ | |
10784 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 10785 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 10786 | packets."), |
e9e68a56 | 10787 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
10788 | show_remote_protocol_Z_packet_cmd, |
10789 | /* FIXME: i18n: Use of remote protocol | |
10790 | `Z' packets is %s. */ | |
e9e68a56 | 10791 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 10792 | |
a6b151f1 DJ |
10793 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
10794 | Manipulate files on the remote system\n\ | |
10795 | Transfer files to and from the remote target system."), | |
10796 | &remote_cmdlist, "remote ", | |
10797 | 0 /* allow-unknown */, &cmdlist); | |
10798 | ||
10799 | add_cmd ("put", class_files, remote_put_command, | |
10800 | _("Copy a local file to the remote system."), | |
10801 | &remote_cmdlist); | |
10802 | ||
10803 | add_cmd ("get", class_files, remote_get_command, | |
10804 | _("Copy a remote file to the local system."), | |
10805 | &remote_cmdlist); | |
10806 | ||
10807 | add_cmd ("delete", class_files, remote_delete_command, | |
10808 | _("Delete a remote file."), | |
10809 | &remote_cmdlist); | |
10810 | ||
2d717e4f DJ |
10811 | remote_exec_file = xstrdup (""); |
10812 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
10813 | &remote_exec_file, _("\ | |
10814 | Set the remote pathname for \"run\""), _("\ | |
10815 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
10816 | &remote_set_cmdlist, &remote_show_cmdlist); | |
10817 | ||
449092f6 CV |
10818 | /* Eventually initialize fileio. See fileio.c */ |
10819 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
10820 | |
10821 | /* Take advantage of the fact that the LWP field is not used, to tag | |
10822 | special ptids with it set to != 0. */ | |
82f73884 PA |
10823 | magic_null_ptid = ptid_build (42000, 1, -1); |
10824 | not_sent_ptid = ptid_build (42000, 1, -2); | |
10825 | any_thread_ptid = ptid_build (42000, 1, 0); | |
35b1e5cc SS |
10826 | |
10827 | target_buf_size = 2048; | |
10828 | target_buf = xmalloc (target_buf_size); | |
c906108c | 10829 | } |
10760264 | 10830 |