Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
43ff13b4 | 2 | Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 98, 1999 |
c906108c SS |
3 | Free Software Foundation, Inc. |
4 | ||
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 21 | |
96baa820 | 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> | |
28 | #include "frame.h" | |
29 | #include "inferior.h" | |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "target.h" | |
33 | #include "wait.h" | |
c5aa993b | 34 | /*#include "terminal.h" */ |
c906108c SS |
35 | #include "gdbcmd.h" |
36 | #include "objfiles.h" | |
37 | #include "gdb-stabs.h" | |
38 | #include "gdbthread.h" | |
c2c6d25f | 39 | #include "remote.h" |
c906108c SS |
40 | |
41 | #include "dcache.h" | |
42 | ||
7a292a7a | 43 | #include <ctype.h> |
9846de1b | 44 | #include <sys/time.h> |
c906108c SS |
45 | #ifdef USG |
46 | #include <sys/types.h> | |
47 | #endif | |
48 | ||
43ff13b4 | 49 | #include "event-loop.h" |
c2c6d25f | 50 | #include "event-top.h" |
2acceee2 | 51 | #include "inf-loop.h" |
43ff13b4 | 52 | |
c906108c SS |
53 | #include <signal.h> |
54 | #include "serial.h" | |
55 | ||
56 | /* Prototypes for local functions */ | |
6426a772 JM |
57 | static void cleanup_sigint_signal_handler (void *dummy); |
58 | static void initialize_sigint_signal_handler (void); | |
59 | ||
43ff13b4 JM |
60 | static void handle_remote_sigint PARAMS ((int)); |
61 | static void handle_remote_sigint_twice PARAMS ((int)); | |
62 | static void async_remote_interrupt PARAMS ((gdb_client_data)); | |
2df3850c | 63 | void async_remote_interrupt_twice PARAMS ((gdb_client_data)); |
43ff13b4 | 64 | |
0f71a2f6 JM |
65 | static void build_remote_gdbarch_data PARAMS ((void)); |
66 | ||
917317f4 | 67 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c SS |
68 | |
69 | static int remote_read_bytes PARAMS ((CORE_ADDR memaddr, | |
70 | char *myaddr, int len)); | |
71 | ||
c5aa993b | 72 | static void remote_files_info PARAMS ((struct target_ops * ignore)); |
c906108c | 73 | |
c5aa993b | 74 | static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, |
c906108c SS |
75 | int len, int should_write, |
76 | struct target_ops * target)); | |
77 | ||
78 | static void remote_prepare_to_store PARAMS ((void)); | |
79 | ||
80 | static void remote_fetch_registers PARAMS ((int regno)); | |
81 | ||
82 | static void remote_resume PARAMS ((int pid, int step, | |
83 | enum target_signal siggnal)); | |
43ff13b4 | 84 | static void remote_async_resume PARAMS ((int pid, int step, |
c5aa993b | 85 | enum target_signal siggnal)); |
c906108c SS |
86 | static int remote_start_remote PARAMS ((PTR)); |
87 | ||
88 | static void remote_open PARAMS ((char *name, int from_tty)); | |
43ff13b4 | 89 | static void remote_async_open PARAMS ((char *name, int from_tty)); |
c906108c SS |
90 | |
91 | static void extended_remote_open PARAMS ((char *name, int from_tty)); | |
43ff13b4 | 92 | static void extended_remote_async_open PARAMS ((char *name, int from_tty)); |
c906108c SS |
93 | |
94 | static void remote_open_1 PARAMS ((char *, int, struct target_ops *, | |
95 | int extended_p)); | |
43ff13b4 | 96 | static void remote_async_open_1 PARAMS ((char *, int, struct target_ops *, |
c5aa993b | 97 | int extended_p)); |
c906108c SS |
98 | |
99 | static void remote_close PARAMS ((int quitting)); | |
100 | ||
101 | static void remote_store_registers PARAMS ((int regno)); | |
102 | ||
103 | static void remote_mourn PARAMS ((void)); | |
53a5351d | 104 | static void remote_async_mourn PARAMS ((void)); |
c906108c SS |
105 | |
106 | static void extended_remote_restart PARAMS ((void)); | |
107 | ||
108 | static void extended_remote_mourn PARAMS ((void)); | |
109 | ||
110 | static void extended_remote_create_inferior PARAMS ((char *, char *, char **)); | |
43ff13b4 | 111 | static void extended_remote_async_create_inferior PARAMS ((char *, char *, char **)); |
c906108c SS |
112 | |
113 | static void remote_mourn_1 PARAMS ((struct target_ops *)); | |
114 | ||
115 | static void remote_send PARAMS ((char *buf)); | |
116 | ||
117 | static int readchar PARAMS ((int timeout)); | |
118 | ||
119 | static int remote_wait PARAMS ((int pid, struct target_waitstatus * status)); | |
43ff13b4 | 120 | static int remote_async_wait PARAMS ((int pid, struct target_waitstatus * status)); |
c906108c SS |
121 | |
122 | static void remote_kill PARAMS ((void)); | |
43ff13b4 | 123 | static void remote_async_kill PARAMS ((void)); |
c906108c SS |
124 | |
125 | static int tohex PARAMS ((int nib)); | |
126 | ||
127 | static void remote_detach PARAMS ((char *args, int from_tty)); | |
43ff13b4 | 128 | static void remote_async_detach PARAMS ((char *args, int from_tty)); |
c906108c SS |
129 | |
130 | static void remote_interrupt PARAMS ((int signo)); | |
131 | ||
7a292a7a SS |
132 | static void remote_interrupt_twice PARAMS ((int signo)); |
133 | ||
c906108c SS |
134 | static void interrupt_query PARAMS ((void)); |
135 | ||
136 | static void set_thread PARAMS ((int, int)); | |
137 | ||
138 | static int remote_thread_alive PARAMS ((int)); | |
139 | ||
140 | static void get_offsets PARAMS ((void)); | |
141 | ||
142 | static int read_frame PARAMS ((char *)); | |
143 | ||
144 | static int remote_insert_breakpoint PARAMS ((CORE_ADDR, char *)); | |
145 | ||
146 | static int remote_remove_breakpoint PARAMS ((CORE_ADDR, char *)); | |
147 | ||
148 | static int hexnumlen PARAMS ((ULONGEST num)); | |
149 | ||
150 | static void init_remote_ops PARAMS ((void)); | |
151 | ||
152 | static void init_extended_remote_ops PARAMS ((void)); | |
153 | ||
0f71a2f6 JM |
154 | static void init_remote_cisco_ops PARAMS ((void)); |
155 | ||
156 | static struct target_ops remote_cisco_ops; | |
157 | ||
c906108c SS |
158 | static void remote_stop PARAMS ((void)); |
159 | ||
160 | static int ishex PARAMS ((int ch, int *val)); | |
161 | ||
162 | static int stubhex PARAMS ((int ch)); | |
163 | ||
c5aa993b | 164 | static int remote_query PARAMS ((int /*char */ , char *, char *, int *)); |
c906108c SS |
165 | |
166 | static int hexnumstr PARAMS ((char *, ULONGEST)); | |
167 | ||
2df3850c JM |
168 | static int hexnumnstr PARAMS ((char *, ULONGEST, int)); |
169 | ||
c906108c SS |
170 | static CORE_ADDR remote_address_masked PARAMS ((CORE_ADDR)); |
171 | ||
172 | static void print_packet PARAMS ((char *)); | |
173 | ||
174 | static unsigned long crc32 PARAMS ((unsigned char *, int, unsigned int)); | |
175 | ||
176 | static void compare_sections_command PARAMS ((char *, int)); | |
177 | ||
178 | static void packet_command PARAMS ((char *, int)); | |
179 | ||
180 | static int stub_unpack_int PARAMS ((char *buff, int fieldlength)); | |
181 | ||
c906108c SS |
182 | static int remote_current_thread PARAMS ((int oldpid)); |
183 | ||
cce74817 | 184 | static void remote_find_new_threads PARAMS ((void)); |
c906108c SS |
185 | |
186 | static void record_currthread PARAMS ((int currthread)); | |
187 | ||
c906108c SS |
188 | /* exported functions */ |
189 | ||
190 | extern int fromhex PARAMS ((int a)); | |
191 | ||
c906108c SS |
192 | static int putpkt_binary PARAMS ((char *buf, int cnt)); |
193 | ||
c906108c SS |
194 | static void check_binary_download PARAMS ((CORE_ADDR addr)); |
195 | ||
5a2468f5 | 196 | struct packet_config; |
5a2468f5 JM |
197 | |
198 | static void show_packet_config_cmd PARAMS ((struct packet_config * config)); | |
199 | ||
200 | static void set_packet_config_cmd PARAMS ((struct packet_config * config, | |
201 | struct cmd_list_element * c)); | |
202 | ||
203 | static void add_packet_config_cmd PARAMS ((struct packet_config * config, | |
204 | char *name, | |
205 | char *title, | |
206 | void (*set_func) (char *args, int from_tty, struct cmd_list_element * c), | |
207 | void (*show_func) (char *name, int from_tty), | |
208 | struct cmd_list_element **setlist, | |
209 | struct cmd_list_element **showlist)); | |
210 | ||
211 | static void init_packet_config PARAMS ((struct packet_config * config)); | |
212 | ||
213 | static void set_remote_protocol_P_packet_cmd PARAMS ((char *args, | |
214 | int from_tty, | |
215 | struct cmd_list_element * c)); | |
216 | ||
217 | static void show_remote_protocol_P_packet_cmd PARAMS ((char *args, | |
218 | int from_tty)); | |
219 | ||
96baa820 JM |
220 | static void set_remote_protocol_Z_packet_cmd PARAMS ((char *args, |
221 | int from_tty, | |
222 | struct cmd_list_element * c)); | |
223 | ||
224 | static void show_remote_protocol_Z_packet_cmd PARAMS ((char *args, | |
225 | int from_tty)); | |
226 | ||
5a2468f5 JM |
227 | |
228 | ||
229 | ||
c906108c SS |
230 | /* Define the target subroutine names */ |
231 | ||
232 | void open_remote_target PARAMS ((char *, int, struct target_ops *, int)); | |
233 | ||
234 | void _initialize_remote PARAMS ((void)); | |
235 | ||
236 | /* */ | |
237 | ||
238 | static struct target_ops remote_ops; | |
239 | ||
240 | static struct target_ops extended_remote_ops; | |
241 | ||
43ff13b4 JM |
242 | /* Temporary target ops. Just like the remote_ops and |
243 | extended_remote_ops, but with asynchronous support. */ | |
244 | static struct target_ops remote_async_ops; | |
245 | ||
246 | static struct target_ops extended_async_remote_ops; | |
247 | ||
c906108c SS |
248 | /* This was 5 seconds, which is a long time to sit and wait. |
249 | Unless this is going though some terminal server or multiplexer or | |
250 | other form of hairy serial connection, I would think 2 seconds would | |
251 | be plenty. */ | |
252 | ||
253 | /* Changed to allow option to set timeout value. | |
254 | was static int remote_timeout = 2; */ | |
255 | extern int remote_timeout; | |
256 | ||
6426a772 JM |
257 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
258 | ``forever'' still use the normal timeout mechanism. This is | |
259 | currently used by the ASYNC code to guarentee that target reads | |
260 | during the initial connect always time-out. Once getpkt has been | |
261 | modified to return a timeout indication and, in turn | |
262 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
263 | this can go away. */ | |
264 | static int wait_forever_enabled_p = 1; | |
265 | ||
266 | ||
c906108c SS |
267 | /* This variable chooses whether to send a ^C or a break when the user |
268 | requests program interruption. Although ^C is usually what remote | |
269 | systems expect, and that is the default here, sometimes a break is | |
270 | preferable instead. */ | |
271 | ||
272 | static int remote_break; | |
273 | ||
c906108c SS |
274 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
275 | remote_open knows that we don't have a file open when the program | |
276 | starts. */ | |
277 | static serial_t remote_desc = NULL; | |
278 | ||
0f71a2f6 JM |
279 | /* This is set by the target (thru the 'S' message) |
280 | to denote that the target is in kernel mode. */ | |
281 | static int cisco_kernel_mode = 0; | |
282 | ||
c906108c SS |
283 | /* This variable sets the number of bits in an address that are to be |
284 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
285 | leading zeros, the entire address would be sent. This variable | |
286 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
287 | initial implementation of remote.c restricted the address sent in | |
288 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
289 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
290 | address was never sent. Since fixing this bug may cause a break in | |
291 | some remote targets this variable is principly provided to | |
292 | facilitate backward compatibility. */ | |
293 | ||
294 | static int remote_address_size; | |
295 | ||
6426a772 JM |
296 | /* Tempoary to track who currently owns the terminal. See |
297 | target_async_terminal_* for more details. */ | |
298 | ||
299 | static int remote_async_terminal_ours_p; | |
300 | ||
11cf8741 JM |
301 | \f |
302 | /* This is the size (in chars) of the first response to the ``g'' | |
303 | packet. It is used as a heuristic when determining the maximum | |
304 | size of memory-read and memory-write packets. A target will | |
305 | typically only reserve a buffer large enough to hold the ``g'' | |
306 | packet. The size does not include packet overhead (headers and | |
307 | trailers). */ | |
308 | ||
309 | static long actual_register_packet_size; | |
310 | ||
311 | /* This is the maximum size (in chars) of a non read/write packet. It | |
312 | is also used as a cap on the size of read/write packets. */ | |
313 | ||
314 | static long remote_packet_size; | |
315 | /* compatibility. */ | |
316 | #define PBUFSIZ (remote_packet_size) | |
317 | ||
318 | /* User configurable variables for the number of characters in a | |
319 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
320 | default. Some targets need smaller values (fifo overruns, et.al.) | |
321 | and some users need larger values (speed up transfers). The | |
322 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
323 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
324 | negative - a hard limit). */ | |
325 | ||
326 | struct memory_packet_config | |
327 | { | |
328 | char *name; | |
329 | long size; | |
330 | int fixed_p; | |
331 | }; | |
332 | ||
333 | /* Compute the current size of a read/write packet. Since this makes | |
334 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
335 | ||
336 | static long | |
337 | get_memory_packet_size (struct memory_packet_config *config) | |
338 | { | |
339 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
340 | law?) that some hosts don't cope very well with large alloca() | |
341 | calls. Eventually the alloca() code will be replaced by calls to | |
342 | xmalloc() and make_cleanups() allowing this restriction to either | |
343 | be lifted or removed. */ | |
344 | #ifndef MAX_REMOTE_PACKET_SIZE | |
345 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
346 | #endif | |
347 | /* NOTE: 16 is just chosen at random. */ | |
348 | #ifndef MIN_REMOTE_PACKET_SIZE | |
349 | #define MIN_REMOTE_PACKET_SIZE 16 | |
350 | #endif | |
351 | long what_they_get; | |
352 | if (config->fixed_p) | |
353 | { | |
354 | if (config->size <= 0) | |
355 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
356 | else | |
357 | what_they_get = config->size; | |
358 | } | |
359 | else | |
360 | { | |
361 | what_they_get = remote_packet_size; | |
362 | /* Limit the packet to the size specified by the user. */ | |
363 | if (config->size > 0 | |
364 | && what_they_get > config->size) | |
365 | what_they_get = config->size; | |
366 | /* Limit it to the size of the targets ``g'' response. */ | |
367 | if (actual_register_packet_size > 0 | |
368 | && what_they_get > actual_register_packet_size) | |
369 | what_they_get = actual_register_packet_size; | |
370 | } | |
371 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
372 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
373 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
374 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
375 | return what_they_get; | |
376 | } | |
377 | ||
378 | /* Update the size of a read/write packet. If they user wants | |
379 | something really big then do a sanity check. */ | |
380 | ||
381 | static void | |
382 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
383 | { | |
384 | int fixed_p = config->fixed_p; | |
385 | long size = config->size; | |
386 | if (args == NULL) | |
387 | error ("Argument required (integer, `fixed' or `limited')."); | |
388 | else if (strcmp (args, "hard") == 0 | |
389 | || strcmp (args, "fixed") == 0) | |
390 | fixed_p = 1; | |
391 | else if (strcmp (args, "soft") == 0 | |
392 | || strcmp (args, "limit") == 0) | |
393 | fixed_p = 0; | |
394 | else | |
395 | { | |
396 | char *end; | |
397 | size = strtoul (args, &end, 0); | |
398 | if (args == end) | |
399 | error ("Invalid %s (bad syntax).", config->name); | |
400 | #if 0 | |
401 | /* Instead of explicitly capping the size of a packet to | |
402 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
403 | instead allowed to set the size to something arbitrarily | |
404 | large. */ | |
405 | if (size > MAX_REMOTE_PACKET_SIZE) | |
406 | error ("Invalid %s (too large).", config->name); | |
407 | #endif | |
408 | } | |
409 | /* Extra checks? */ | |
410 | if (fixed_p && !config->fixed_p) | |
411 | { | |
412 | if (! query ("The target may not be able to correctly handle a %s\n" | |
413 | "of %ld bytes. Change the packet size? ", | |
414 | config->name, size)) | |
415 | error ("Packet size not changed."); | |
416 | } | |
417 | /* Update the config. */ | |
418 | config->fixed_p = fixed_p; | |
419 | config->size = size; | |
420 | } | |
421 | ||
422 | static void | |
423 | show_memory_packet_size (struct memory_packet_config *config) | |
424 | { | |
425 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
426 | if (config->fixed_p) | |
427 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
428 | get_memory_packet_size (config)); | |
429 | else | |
430 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
431 | get_memory_packet_size (config)); | |
432 | } | |
433 | ||
434 | static struct memory_packet_config memory_write_packet_config = | |
435 | { | |
436 | "memory-write-packet-size", | |
437 | }; | |
438 | ||
439 | static void | |
440 | set_memory_write_packet_size (char *args, int from_tty) | |
441 | { | |
442 | set_memory_packet_size (args, &memory_write_packet_config); | |
443 | } | |
444 | ||
445 | static void | |
446 | show_memory_write_packet_size (char *args, int from_tty) | |
447 | { | |
448 | show_memory_packet_size (&memory_write_packet_config); | |
449 | } | |
450 | ||
451 | static long | |
452 | get_memory_write_packet_size (void) | |
453 | { | |
454 | return get_memory_packet_size (&memory_write_packet_config); | |
455 | } | |
456 | ||
457 | static struct memory_packet_config memory_read_packet_config = | |
458 | { | |
459 | "memory-read-packet-size", | |
460 | }; | |
461 | ||
462 | static void | |
463 | set_memory_read_packet_size (char *args, int from_tty) | |
464 | { | |
465 | set_memory_packet_size (args, &memory_read_packet_config); | |
466 | } | |
467 | ||
468 | static void | |
469 | show_memory_read_packet_size (char *args, int from_tty) | |
470 | { | |
471 | show_memory_packet_size (&memory_read_packet_config); | |
472 | } | |
473 | ||
474 | static long | |
475 | get_memory_read_packet_size (void) | |
476 | { | |
477 | long size = get_memory_packet_size (&memory_read_packet_config); | |
478 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
479 | extra buffer size argument before the memory read size can be | |
480 | increased beyond PBUFSIZ. */ | |
481 | if (size > PBUFSIZ) | |
482 | size = PBUFSIZ; | |
483 | return size; | |
484 | } | |
485 | ||
486 | /* Register packet size initialization. Since the bounds change when | |
487 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
488 | be multi-arched. */ | |
489 | ||
490 | static void | |
491 | register_remote_packet_sizes (void) | |
492 | { | |
493 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
494 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
495 | } | |
496 | ||
497 | static void | |
498 | build_remote_packet_sizes (void) | |
499 | { | |
500 | /* Maximum number of characters in a packet. This default m68k-stub.c and | |
501 | i386-stub.c stubs. */ | |
502 | remote_packet_size = 400; | |
503 | /* Should REGISTER_BYTES needs more space than the default, adjust | |
504 | the size accordingly. Remember that each byte is encoded as two | |
505 | characters. 32 is the overhead for the packet header / | |
506 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
507 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
508 | little. */ | |
509 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
510 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
511 | ||
512 | /* This one is filled in when a ``g'' packet is received. */ | |
513 | actual_register_packet_size = 0; | |
514 | } | |
515 | \f | |
5a2468f5 JM |
516 | /* Generic configuration support for packets the stub optionally |
517 | supports. Allows the user to specify the use of the packet as well | |
518 | as allowing GDB to auto-detect support in the remote stub. */ | |
519 | ||
520 | enum packet_support | |
521 | { | |
522 | PACKET_SUPPORT_UNKNOWN = 0, | |
523 | PACKET_ENABLE, | |
524 | PACKET_DISABLE | |
525 | }; | |
526 | ||
527 | enum packet_detect | |
528 | { | |
529 | PACKET_AUTO_DETECT = 0, | |
530 | PACKET_MANUAL_DETECT | |
531 | }; | |
532 | ||
533 | struct packet_config | |
534 | { | |
535 | char *state; | |
536 | char *name; | |
537 | char *title; | |
538 | enum packet_detect detect; | |
539 | enum packet_support support; | |
540 | }; | |
541 | ||
542 | static char packet_support_auto[] = "auto"; | |
543 | static char packet_enable[] = "enable"; | |
544 | static char packet_disable[] = "disable"; | |
545 | static char *packet_support_enums[] = | |
546 | { | |
547 | packet_support_auto, | |
548 | packet_enable, | |
549 | packet_disable, | |
550 | 0, | |
551 | }; | |
552 | ||
553 | static void | |
554 | set_packet_config_cmd (config, c) | |
555 | struct packet_config *config; | |
556 | struct cmd_list_element *c; | |
557 | { | |
558 | if (config->state == packet_enable) | |
559 | { | |
560 | config->detect = PACKET_MANUAL_DETECT; | |
561 | config->support = PACKET_ENABLE; | |
562 | } | |
563 | else if (config->state == packet_disable) | |
564 | { | |
565 | config->detect = PACKET_MANUAL_DETECT; | |
566 | config->support = PACKET_DISABLE; | |
567 | } | |
568 | else if (config->state == packet_support_auto) | |
569 | { | |
570 | config->detect = PACKET_AUTO_DETECT; | |
571 | config->support = PACKET_SUPPORT_UNKNOWN; | |
572 | } | |
573 | else | |
96baa820 | 574 | internal_error ("Bad enum value"); |
5a2468f5 JM |
575 | } |
576 | ||
577 | static void | |
578 | show_packet_config_cmd (config) | |
579 | struct packet_config *config; | |
580 | { | |
581 | char *support = "internal-error"; | |
582 | switch (config->support) | |
583 | { | |
584 | case PACKET_ENABLE: | |
585 | support = "enabled"; | |
586 | break; | |
587 | case PACKET_DISABLE: | |
588 | support = "disabled"; | |
589 | break; | |
590 | case PACKET_SUPPORT_UNKNOWN: | |
591 | support = "unknown"; | |
592 | break; | |
593 | } | |
594 | switch (config->detect) | |
595 | { | |
596 | case PACKET_AUTO_DETECT: | |
597 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", | |
598 | config->name, config->title, support); | |
599 | break; | |
600 | case PACKET_MANUAL_DETECT: | |
601 | printf_filtered ("Support for remote protocol `%s' (%s) is currently %s.\n", | |
602 | config->name, config->title, support); | |
603 | } | |
604 | } | |
605 | ||
606 | static void | |
607 | add_packet_config_cmd (config, name, title, set_func, show_func, | |
608 | setlist, showlist) | |
609 | struct packet_config *config; | |
610 | char *name; | |
611 | char *title; | |
612 | void (*set_func) PARAMS ((char *args, int from_tty, | |
613 | struct cmd_list_element * c)); | |
614 | void (*show_func) PARAMS ((char *name, int from_tty)); | |
615 | struct cmd_list_element **setlist; | |
616 | struct cmd_list_element **showlist; | |
617 | { | |
618 | struct cmd_list_element *c; | |
619 | char *set_doc; | |
620 | char *show_doc; | |
621 | char *full_name; | |
622 | config->name = name; | |
623 | config->title = title; | |
624 | asprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", | |
625 | name, title); | |
626 | asprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
627 | name, title); | |
628 | asprintf (&full_name, "%s-packet", name); | |
629 | c = add_set_enum_cmd (full_name, | |
630 | class_obscure, packet_support_enums, | |
631 | (char *) &config->state, | |
632 | set_doc, setlist); | |
633 | c->function.sfunc = set_func; | |
634 | add_cmd (full_name, class_obscure, show_func, show_doc, showlist); | |
635 | } | |
636 | ||
637 | static void | |
638 | init_packet_config (config) | |
639 | struct packet_config *config; | |
640 | { | |
641 | switch (config->detect) | |
642 | { | |
643 | case PACKET_AUTO_DETECT: | |
644 | config->support = PACKET_SUPPORT_UNKNOWN; | |
645 | break; | |
646 | case PACKET_MANUAL_DETECT: | |
647 | /* let the user beware */ | |
648 | break; | |
649 | } | |
650 | } | |
651 | ||
652 | /* Should we try the 'P' (set register) request? */ | |
653 | ||
654 | static struct packet_config remote_protocol_P; | |
655 | ||
656 | static void | |
657 | set_remote_protocol_P_packet_cmd (args, from_tty, c) | |
658 | char *args; | |
659 | int from_tty; | |
660 | struct cmd_list_element *c; | |
661 | { | |
662 | set_packet_config_cmd (&remote_protocol_P, c); | |
663 | } | |
664 | ||
665 | static void | |
666 | show_remote_protocol_P_packet_cmd (args, from_tty) | |
667 | char *args; | |
668 | int from_tty; | |
669 | { | |
670 | show_packet_config_cmd (&remote_protocol_P); | |
671 | } | |
672 | ||
96baa820 JM |
673 | /* Should we try the 'Z' (set breakpoint) request? */ |
674 | ||
675 | static struct packet_config remote_protocol_Z; | |
676 | ||
677 | static void | |
678 | set_remote_protocol_Z_packet_cmd (args, from_tty, c) | |
679 | char *args; | |
680 | int from_tty; | |
681 | struct cmd_list_element *c; | |
682 | { | |
683 | set_packet_config_cmd (&remote_protocol_Z, c); | |
684 | } | |
685 | ||
686 | static void | |
687 | show_remote_protocol_Z_packet_cmd (args, from_tty) | |
688 | char *args; | |
689 | int from_tty; | |
690 | { | |
691 | show_packet_config_cmd (&remote_protocol_Z); | |
692 | } | |
693 | ||
694 | /* Should we try the 'X' (remote binary download) packet? | |
695 | ||
696 | This variable (available to the user via "set remote X-packet") | |
697 | dictates whether downloads are sent in binary (via the 'X' packet). | |
698 | We assume that the stub can, and attempt to do it. This will be | |
699 | cleared if the stub does not understand it. This switch is still | |
700 | needed, though in cases when the packet is supported in the stub, | |
701 | but the connection does not allow it (i.e., 7-bit serial connection | |
702 | only). */ | |
703 | ||
704 | static struct packet_config remote_protocol_binary_download; | |
705 | ||
706 | static void | |
707 | set_remote_protocol_binary_download_cmd (char *args, | |
708 | int from_tty, | |
709 | struct cmd_list_element *c) | |
710 | { | |
711 | set_packet_config_cmd (&remote_protocol_binary_download, c); | |
712 | } | |
713 | ||
714 | static void | |
715 | show_remote_protocol_binary_download_cmd (char *args, | |
716 | int from_tty) | |
717 | { | |
718 | show_packet_config_cmd (&remote_protocol_binary_download); | |
719 | } | |
720 | ||
c906108c | 721 | |
43ff13b4 JM |
722 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
723 | PTR sigint_remote_twice_token; | |
724 | PTR sigint_remote_token; | |
725 | ||
c906108c SS |
726 | /* These are pointers to hook functions that may be set in order to |
727 | modify resume/wait behavior for a particular architecture. */ | |
728 | ||
729 | void (*target_resume_hook) PARAMS ((void)); | |
730 | void (*target_wait_loop_hook) PARAMS ((void)); | |
c906108c SS |
731 | \f |
732 | ||
c5aa993b | 733 | |
c906108c SS |
734 | /* These are the threads which we last sent to the remote system. |
735 | -1 for all or -2 for not sent yet. */ | |
736 | static int general_thread; | |
cce74817 | 737 | static int continue_thread; |
c906108c SS |
738 | |
739 | /* Call this function as a result of | |
740 | 1) A halt indication (T packet) containing a thread id | |
741 | 2) A direct query of currthread | |
742 | 3) Successful execution of set thread | |
743 | */ | |
744 | ||
745 | static void | |
746 | record_currthread (currthread) | |
747 | int currthread; | |
748 | { | |
c906108c | 749 | general_thread = currthread; |
cce74817 | 750 | |
c906108c SS |
751 | /* If this is a new thread, add it to GDB's thread list. |
752 | If we leave it up to WFI to do this, bad things will happen. */ | |
753 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
754 | { |
755 | add_thread (currthread); | |
756 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); | |
757 | } | |
c906108c SS |
758 | } |
759 | ||
760 | #define MAGIC_NULL_PID 42000 | |
761 | ||
762 | static void | |
763 | set_thread (th, gen) | |
764 | int th; | |
765 | int gen; | |
766 | { | |
085dd6e6 | 767 | char *buf = alloca (PBUFSIZ); |
cce74817 | 768 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
769 | |
770 | if (state == th) | |
771 | return; | |
772 | ||
773 | buf[0] = 'H'; | |
774 | buf[1] = gen ? 'g' : 'c'; | |
775 | if (th == MAGIC_NULL_PID) | |
776 | { | |
777 | buf[2] = '0'; | |
778 | buf[3] = '\0'; | |
779 | } | |
780 | else if (th < 0) | |
781 | sprintf (&buf[2], "-%x", -th); | |
782 | else | |
783 | sprintf (&buf[2], "%x", th); | |
784 | putpkt (buf); | |
785 | getpkt (buf, 0); | |
786 | if (gen) | |
c5aa993b | 787 | general_thread = th; |
c906108c | 788 | else |
cce74817 | 789 | continue_thread = th; |
c906108c SS |
790 | } |
791 | \f | |
792 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
793 | ||
794 | static int | |
cce74817 JM |
795 | remote_thread_alive (tid) |
796 | int tid; | |
c906108c | 797 | { |
cce74817 | 798 | char buf[16]; |
c906108c | 799 | |
cce74817 JM |
800 | if (tid < 0) |
801 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 802 | else |
cce74817 | 803 | sprintf (buf, "T%08x", tid); |
c906108c SS |
804 | putpkt (buf); |
805 | getpkt (buf, 0); | |
806 | return (buf[0] == 'O' && buf[1] == 'K'); | |
807 | } | |
808 | ||
809 | /* About these extended threadlist and threadinfo packets. They are | |
810 | variable length packets but, the fields within them are often fixed | |
811 | length. They are redundent enough to send over UDP as is the | |
812 | remote protocol in general. There is a matching unit test module | |
813 | in libstub. */ | |
814 | ||
cce74817 JM |
815 | #define OPAQUETHREADBYTES 8 |
816 | ||
817 | /* a 64 bit opaque identifier */ | |
818 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
819 | ||
820 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
821 | protocol encoding, and remote.c. it is not particularly changable */ | |
822 | ||
823 | /* Right now, the internal structure is int. We want it to be bigger. | |
824 | Plan to fix this. | |
c5aa993b | 825 | */ |
cce74817 | 826 | |
c5aa993b | 827 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 JM |
828 | |
829 | /* gdb_ext_thread_info is an internal GDB data structure which is | |
830 | equivalint to the reply of the remote threadinfo packet */ | |
831 | ||
832 | struct gdb_ext_thread_info | |
c5aa993b JM |
833 | { |
834 | threadref threadid; /* External form of thread reference */ | |
835 | int active; /* Has state interesting to GDB? , regs, stack */ | |
836 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
837 | char shortname[32]; /* To be used to name threads */ | |
838 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
839 | }; | |
cce74817 JM |
840 | |
841 | /* The volume of remote transfers can be limited by submitting | |
842 | a mask containing bits specifying the desired information. | |
843 | Use a union of these values as the 'selection' parameter to | |
844 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 845 | */ |
cce74817 JM |
846 | |
847 | #define TAG_THREADID 1 | |
848 | #define TAG_EXISTS 2 | |
849 | #define TAG_DISPLAY 4 | |
850 | #define TAG_THREADNAME 8 | |
c5aa993b | 851 | #define TAG_MOREDISPLAY 16 |
cce74817 | 852 | |
c906108c SS |
853 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
854 | ||
cce74817 JM |
855 | char *unpack_varlen_hex PARAMS ((char *buff, int *result)); |
856 | ||
857 | static char *unpack_nibble PARAMS ((char *buf, int *val)); | |
858 | ||
859 | static char *pack_nibble PARAMS ((char *buf, int nibble)); | |
860 | ||
c5aa993b | 861 | static char *pack_hex_byte PARAMS ((char *pkt, int /*unsigned char */ byte)); |
cce74817 JM |
862 | |
863 | static char *unpack_byte PARAMS ((char *buf, int *value)); | |
864 | ||
865 | static char *pack_int PARAMS ((char *buf, int value)); | |
866 | ||
867 | static char *unpack_int PARAMS ((char *buf, int *value)); | |
868 | ||
869 | static char *unpack_string PARAMS ((char *src, char *dest, int length)); | |
870 | ||
c5aa993b | 871 | static char *pack_threadid PARAMS ((char *pkt, threadref * id)); |
cce74817 | 872 | |
c5aa993b | 873 | static char *unpack_threadid PARAMS ((char *inbuf, threadref * id)); |
cce74817 | 874 | |
c5aa993b | 875 | void int_to_threadref PARAMS ((threadref * id, int value)); |
cce74817 | 876 | |
c5aa993b | 877 | static int threadref_to_int PARAMS ((threadref * ref)); |
cce74817 | 878 | |
c5aa993b | 879 | static void copy_threadref PARAMS ((threadref * dest, threadref * src)); |
cce74817 | 880 | |
c5aa993b | 881 | static int threadmatch PARAMS ((threadref * dest, threadref * src)); |
cce74817 JM |
882 | |
883 | static char *pack_threadinfo_request PARAMS ((char *pkt, int mode, | |
c5aa993b | 884 | threadref * id)); |
cce74817 JM |
885 | |
886 | static int remote_unpack_thread_info_response PARAMS ((char *pkt, | |
c5aa993b JM |
887 | threadref * expectedref, |
888 | struct gdb_ext_thread_info * info)); | |
cce74817 JM |
889 | |
890 | ||
c5aa993b JM |
891 | static int remote_get_threadinfo PARAMS ((threadref * threadid, |
892 | int fieldset, /*TAG mask */ | |
893 | struct gdb_ext_thread_info * info)); | |
cce74817 | 894 | |
c5aa993b | 895 | static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref * ref, |
cce74817 | 896 | int selection, |
c5aa993b | 897 | struct gdb_ext_thread_info * info)); |
cce74817 JM |
898 | |
899 | static char *pack_threadlist_request PARAMS ((char *pkt, int startflag, | |
900 | int threadcount, | |
c5aa993b | 901 | threadref * nextthread)); |
cce74817 JM |
902 | |
903 | static int parse_threadlist_response PARAMS ((char *pkt, | |
904 | int result_limit, | |
c5aa993b JM |
905 | threadref * original_echo, |
906 | threadref * resultlist, | |
cce74817 JM |
907 | int *doneflag)); |
908 | ||
909 | static int remote_get_threadlist PARAMS ((int startflag, | |
c5aa993b | 910 | threadref * nextthread, |
cce74817 JM |
911 | int result_limit, |
912 | int *done, | |
913 | int *result_count, | |
c5aa993b | 914 | threadref * threadlist)); |
cce74817 | 915 | |
c5aa993b | 916 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 JM |
917 | |
918 | static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction, | |
c5aa993b | 919 | void *context, int looplimit)); |
cce74817 | 920 | |
c5aa993b | 921 | static int remote_newthread_step PARAMS ((threadref * ref, void *context)); |
cce74817 | 922 | |
c906108c SS |
923 | /* encode 64 bits in 16 chars of hex */ |
924 | ||
925 | static const char hexchars[] = "0123456789abcdef"; | |
926 | ||
927 | static int | |
928 | ishex (ch, val) | |
929 | int ch; | |
930 | int *val; | |
931 | { | |
932 | if ((ch >= 'a') && (ch <= 'f')) | |
933 | { | |
934 | *val = ch - 'a' + 10; | |
935 | return 1; | |
936 | } | |
937 | if ((ch >= 'A') && (ch <= 'F')) | |
938 | { | |
939 | *val = ch - 'A' + 10; | |
940 | return 1; | |
941 | } | |
942 | if ((ch >= '0') && (ch <= '9')) | |
943 | { | |
944 | *val = ch - '0'; | |
945 | return 1; | |
946 | } | |
947 | return 0; | |
948 | } | |
949 | ||
950 | static int | |
951 | stubhex (ch) | |
952 | int ch; | |
953 | { | |
954 | if (ch >= 'a' && ch <= 'f') | |
955 | return ch - 'a' + 10; | |
956 | if (ch >= '0' && ch <= '9') | |
957 | return ch - '0'; | |
958 | if (ch >= 'A' && ch <= 'F') | |
959 | return ch - 'A' + 10; | |
960 | return -1; | |
961 | } | |
962 | ||
963 | static int | |
964 | stub_unpack_int (buff, fieldlength) | |
965 | char *buff; | |
966 | int fieldlength; | |
967 | { | |
968 | int nibble; | |
969 | int retval = 0; | |
970 | ||
971 | while (fieldlength) | |
972 | { | |
973 | nibble = stubhex (*buff++); | |
974 | retval |= nibble; | |
975 | fieldlength--; | |
976 | if (fieldlength) | |
977 | retval = retval << 4; | |
978 | } | |
979 | return retval; | |
980 | } | |
981 | ||
982 | char * | |
983 | unpack_varlen_hex (buff, result) | |
984 | char *buff; /* packet to parse */ | |
985 | int *result; | |
986 | { | |
987 | int nibble; | |
988 | int retval = 0; | |
989 | ||
990 | while (ishex (*buff, &nibble)) | |
991 | { | |
992 | buff++; | |
993 | retval = retval << 4; | |
994 | retval |= nibble & 0x0f; | |
995 | } | |
996 | *result = retval; | |
997 | return buff; | |
998 | } | |
999 | ||
1000 | static char * | |
1001 | unpack_nibble (buf, val) | |
1002 | char *buf; | |
1003 | int *val; | |
1004 | { | |
1005 | ishex (*buf++, val); | |
1006 | return buf; | |
1007 | } | |
1008 | ||
1009 | static char * | |
1010 | pack_nibble (buf, nibble) | |
1011 | char *buf; | |
1012 | int nibble; | |
1013 | { | |
1014 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1015 | return buf; | |
1016 | } | |
1017 | ||
1018 | static char * | |
1019 | pack_hex_byte (pkt, byte) | |
1020 | char *pkt; | |
1021 | int byte; | |
1022 | { | |
1023 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1024 | *pkt++ = hexchars[(byte & 0xf)]; | |
1025 | return pkt; | |
1026 | } | |
1027 | ||
1028 | static char * | |
1029 | unpack_byte (buf, value) | |
1030 | char *buf; | |
1031 | int *value; | |
1032 | { | |
1033 | *value = stub_unpack_int (buf, 2); | |
1034 | return buf + 2; | |
1035 | } | |
1036 | ||
1037 | static char * | |
1038 | pack_int (buf, value) | |
1039 | char *buf; | |
1040 | int value; | |
1041 | { | |
1042 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1043 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1044 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1045 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1046 | return buf; | |
1047 | } | |
1048 | ||
1049 | static char * | |
1050 | unpack_int (buf, value) | |
1051 | char *buf; | |
1052 | int *value; | |
1053 | { | |
1054 | *value = stub_unpack_int (buf, 8); | |
1055 | return buf + 8; | |
1056 | } | |
1057 | ||
c5aa993b | 1058 | #if 0 /* currently unused, uncomment when needed */ |
c906108c SS |
1059 | static char *pack_string PARAMS ((char *pkt, char *string)); |
1060 | ||
1061 | static char * | |
1062 | pack_string (pkt, string) | |
1063 | char *pkt; | |
1064 | char *string; | |
1065 | { | |
1066 | char ch; | |
1067 | int len; | |
1068 | ||
1069 | len = strlen (string); | |
1070 | if (len > 200) | |
1071 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1072 | pkt = pack_hex_byte (pkt, len); | |
1073 | while (len-- > 0) | |
1074 | { | |
1075 | ch = *string++; | |
1076 | if ((ch == '\0') || (ch == '#')) | |
1077 | ch = '*'; /* Protect encapsulation */ | |
1078 | *pkt++ = ch; | |
1079 | } | |
1080 | return pkt; | |
1081 | } | |
1082 | #endif /* 0 (unused) */ | |
1083 | ||
1084 | static char * | |
1085 | unpack_string (src, dest, length) | |
1086 | char *src; | |
1087 | char *dest; | |
1088 | int length; | |
1089 | { | |
1090 | while (length--) | |
1091 | *dest++ = *src++; | |
1092 | *dest = '\0'; | |
1093 | return src; | |
1094 | } | |
1095 | ||
1096 | static char * | |
1097 | pack_threadid (pkt, id) | |
1098 | char *pkt; | |
1099 | threadref *id; | |
1100 | { | |
1101 | char *limit; | |
1102 | unsigned char *altid; | |
1103 | ||
1104 | altid = (unsigned char *) id; | |
1105 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1106 | while (pkt < limit) | |
1107 | pkt = pack_hex_byte (pkt, *altid++); | |
1108 | return pkt; | |
1109 | } | |
1110 | ||
1111 | ||
1112 | static char * | |
1113 | unpack_threadid (inbuf, id) | |
1114 | char *inbuf; | |
1115 | threadref *id; | |
1116 | { | |
1117 | char *altref; | |
1118 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1119 | int x, y; | |
1120 | ||
1121 | altref = (char *) id; | |
1122 | ||
1123 | while (inbuf < limit) | |
1124 | { | |
1125 | x = stubhex (*inbuf++); | |
1126 | y = stubhex (*inbuf++); | |
1127 | *altref++ = (x << 4) | y; | |
1128 | } | |
1129 | return inbuf; | |
1130 | } | |
1131 | ||
1132 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1133 | ints. This is due to a mismatch of specifications. We would like | |
1134 | to use 64bit thread references internally. This is an adapter | |
1135 | function. */ | |
1136 | ||
1137 | void | |
1138 | int_to_threadref (id, value) | |
1139 | threadref *id; | |
1140 | int value; | |
1141 | { | |
1142 | unsigned char *scan; | |
1143 | ||
1144 | scan = (unsigned char *) id; | |
1145 | { | |
1146 | int i = 4; | |
1147 | while (i--) | |
1148 | *scan++ = 0; | |
1149 | } | |
1150 | *scan++ = (value >> 24) & 0xff; | |
1151 | *scan++ = (value >> 16) & 0xff; | |
1152 | *scan++ = (value >> 8) & 0xff; | |
1153 | *scan++ = (value & 0xff); | |
1154 | } | |
1155 | ||
1156 | static int | |
1157 | threadref_to_int (ref) | |
1158 | threadref *ref; | |
1159 | { | |
1160 | int i, value = 0; | |
1161 | unsigned char *scan; | |
1162 | ||
1163 | scan = (char *) ref; | |
1164 | scan += 4; | |
1165 | i = 4; | |
1166 | while (i-- > 0) | |
1167 | value = (value << 8) | ((*scan++) & 0xff); | |
1168 | return value; | |
1169 | } | |
1170 | ||
1171 | static void | |
1172 | copy_threadref (dest, src) | |
1173 | threadref *dest; | |
1174 | threadref *src; | |
1175 | { | |
1176 | int i; | |
1177 | unsigned char *csrc, *cdest; | |
1178 | ||
1179 | csrc = (unsigned char *) src; | |
1180 | cdest = (unsigned char *) dest; | |
1181 | i = 8; | |
1182 | while (i--) | |
1183 | *cdest++ = *csrc++; | |
1184 | } | |
1185 | ||
1186 | static int | |
1187 | threadmatch (dest, src) | |
1188 | threadref *dest; | |
1189 | threadref *src; | |
1190 | { | |
1191 | /* things are broken right now, so just assume we got a match */ | |
1192 | #if 0 | |
1193 | unsigned char *srcp, *destp; | |
1194 | int i, result; | |
1195 | srcp = (char *) src; | |
1196 | destp = (char *) dest; | |
1197 | ||
1198 | result = 1; | |
1199 | while (i-- > 0) | |
1200 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1201 | return result; | |
1202 | #endif | |
1203 | return 1; | |
1204 | } | |
1205 | ||
1206 | /* | |
c5aa993b JM |
1207 | threadid:1, # always request threadid |
1208 | context_exists:2, | |
1209 | display:4, | |
1210 | unique_name:8, | |
1211 | more_display:16 | |
1212 | */ | |
c906108c SS |
1213 | |
1214 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1215 | ||
1216 | static char * | |
1217 | pack_threadinfo_request (pkt, mode, id) | |
1218 | char *pkt; | |
1219 | int mode; | |
1220 | threadref *id; | |
1221 | { | |
1222 | *pkt++ = 'q'; /* Info Query */ | |
1223 | *pkt++ = 'P'; /* process or thread info */ | |
1224 | pkt = pack_int (pkt, mode); /* mode */ | |
1225 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1226 | *pkt = '\0'; /* terminate */ | |
1227 | return pkt; | |
1228 | } | |
1229 | ||
1230 | /* These values tag the fields in a thread info response packet */ | |
1231 | /* Tagging the fields allows us to request specific fields and to | |
1232 | add more fields as time goes by */ | |
1233 | ||
c5aa993b JM |
1234 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1235 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1236 | fetch registers and its stack */ | |
1237 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1238 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1239 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1240 | the process */ | |
c906108c SS |
1241 | |
1242 | static int | |
1243 | remote_unpack_thread_info_response (pkt, expectedref, info) | |
1244 | char *pkt; | |
1245 | threadref *expectedref; | |
1246 | struct gdb_ext_thread_info *info; | |
1247 | { | |
1248 | int mask, length; | |
1249 | unsigned int tag; | |
1250 | threadref ref; | |
c5aa993b | 1251 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1252 | int retval = 1; |
1253 | ||
1254 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1255 | info->active = 0; | |
1256 | info->display[0] = '\0'; | |
1257 | info->shortname[0] = '\0'; | |
1258 | info->more_display[0] = '\0'; | |
1259 | ||
1260 | /* Assume the characters indicating the packet type have been stripped */ | |
1261 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1262 | pkt = unpack_threadid (pkt, &ref); | |
1263 | ||
1264 | if (mask == 0) | |
1265 | warning ("Incomplete response to threadinfo request\n"); | |
1266 | if (!threadmatch (&ref, expectedref)) | |
1267 | { /* This is an answer to a different request */ | |
1268 | warning ("ERROR RMT Thread info mismatch\n"); | |
1269 | return 0; | |
1270 | } | |
1271 | copy_threadref (&info->threadid, &ref); | |
1272 | ||
1273 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1274 | ||
c5aa993b | 1275 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1276 | { |
1277 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1278 | pkt = unpack_byte (pkt, &length); /* length */ | |
1279 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1280 | { | |
1281 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1282 | retval = 0; | |
1283 | break; | |
1284 | } | |
1285 | if (tag == TAG_THREADID) | |
1286 | { | |
1287 | if (length != 16) | |
1288 | { | |
1289 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1290 | retval = 0; | |
1291 | break; | |
1292 | } | |
1293 | pkt = unpack_threadid (pkt, &ref); | |
1294 | mask = mask & ~TAG_THREADID; | |
1295 | continue; | |
1296 | } | |
1297 | if (tag == TAG_EXISTS) | |
1298 | { | |
1299 | info->active = stub_unpack_int (pkt, length); | |
1300 | pkt += length; | |
1301 | mask = mask & ~(TAG_EXISTS); | |
1302 | if (length > 8) | |
1303 | { | |
1304 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1305 | retval = 0; | |
1306 | break; | |
1307 | } | |
1308 | continue; | |
1309 | } | |
1310 | if (tag == TAG_THREADNAME) | |
1311 | { | |
1312 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1313 | mask = mask & ~TAG_THREADNAME; | |
1314 | continue; | |
1315 | } | |
1316 | if (tag == TAG_DISPLAY) | |
1317 | { | |
1318 | pkt = unpack_string (pkt, &info->display[0], length); | |
1319 | mask = mask & ~TAG_DISPLAY; | |
1320 | continue; | |
1321 | } | |
1322 | if (tag == TAG_MOREDISPLAY) | |
1323 | { | |
1324 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1325 | mask = mask & ~TAG_MOREDISPLAY; | |
1326 | continue; | |
1327 | } | |
1328 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1329 | break; /* Not a tag we know about */ | |
1330 | } | |
1331 | return retval; | |
1332 | } | |
1333 | ||
1334 | static int | |
1335 | remote_get_threadinfo (threadid, fieldset, info) | |
1336 | threadref *threadid; | |
1337 | int fieldset; /* TAG mask */ | |
1338 | struct gdb_ext_thread_info *info; | |
1339 | { | |
1340 | int result; | |
085dd6e6 | 1341 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1342 | |
1343 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1344 | putpkt (threadinfo_pkt); | |
1345 | getpkt (threadinfo_pkt, 0); | |
1346 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, | |
1347 | info); | |
1348 | return result; | |
1349 | } | |
1350 | ||
1351 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1352 | representation of a threadid. */ | |
1353 | ||
1354 | static int | |
1355 | adapt_remote_get_threadinfo (ref, selection, info) | |
1356 | gdb_threadref *ref; | |
1357 | int selection; | |
1358 | struct gdb_ext_thread_info *info; | |
1359 | { | |
1360 | threadref lclref; | |
1361 | ||
1362 | int_to_threadref (&lclref, *ref); | |
1363 | return remote_get_threadinfo (&lclref, selection, info); | |
1364 | } | |
1365 | ||
1366 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1367 | ||
1368 | static char * | |
1369 | pack_threadlist_request (pkt, startflag, threadcount, nextthread) | |
1370 | char *pkt; | |
1371 | int startflag; | |
1372 | int threadcount; | |
1373 | threadref *nextthread; | |
1374 | { | |
1375 | *pkt++ = 'q'; /* info query packet */ | |
1376 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1377 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1378 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1379 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1380 | *pkt = '\0'; | |
1381 | return pkt; | |
1382 | } | |
1383 | ||
1384 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1385 | ||
1386 | static int | |
1387 | parse_threadlist_response (pkt, result_limit, original_echo, resultlist, | |
1388 | doneflag) | |
1389 | char *pkt; | |
1390 | int result_limit; | |
1391 | threadref *original_echo; | |
1392 | threadref *resultlist; | |
1393 | int *doneflag; | |
1394 | { | |
1395 | char *limit; | |
1396 | int count, resultcount, done; | |
1397 | ||
1398 | resultcount = 0; | |
1399 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1400 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1401 | pkt = unpack_byte (pkt, &count); /* count field */ |
1402 | pkt = unpack_nibble (pkt, &done); | |
1403 | /* The first threadid is the argument threadid. */ | |
1404 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1405 | while ((count-- > 0) && (pkt < limit)) | |
1406 | { | |
1407 | pkt = unpack_threadid (pkt, resultlist++); | |
1408 | if (resultcount++ >= result_limit) | |
1409 | break; | |
1410 | } | |
1411 | if (doneflag) | |
1412 | *doneflag = done; | |
1413 | return resultcount; | |
1414 | } | |
1415 | ||
1416 | static int | |
1417 | remote_get_threadlist (startflag, nextthread, result_limit, | |
1418 | done, result_count, threadlist) | |
1419 | int startflag; | |
1420 | threadref *nextthread; | |
1421 | int result_limit; | |
1422 | int *done; | |
1423 | int *result_count; | |
1424 | threadref *threadlist; | |
1425 | ||
1426 | { | |
1427 | static threadref echo_nextthread; | |
085dd6e6 JM |
1428 | char *threadlist_packet = alloca (PBUFSIZ); |
1429 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1430 | int result = 1; |
1431 | ||
1432 | /* Trancate result limit to be smaller than the packet size */ | |
1433 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1434 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1435 | ||
1436 | pack_threadlist_request (threadlist_packet, | |
1437 | startflag, result_limit, nextthread); | |
1438 | putpkt (threadlist_packet); | |
1439 | getpkt (t_response, 0); | |
1440 | ||
1441 | *result_count = | |
1442 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1443 | threadlist, done); | |
1444 | ||
1445 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1446 | { | |
1447 | /* FIXME: This is a good reason to drop the packet */ | |
1448 | /* Possably, there is a duplicate response */ | |
1449 | /* Possabilities : | |
1450 | retransmit immediatly - race conditions | |
1451 | retransmit after timeout - yes | |
1452 | exit | |
1453 | wait for packet, then exit | |
1454 | */ | |
1455 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1456 | return 0; /* I choose simply exiting */ | |
1457 | } | |
1458 | if (*result_count <= 0) | |
1459 | { | |
1460 | if (*done != 1) | |
1461 | { | |
1462 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1463 | result = 0; | |
1464 | } | |
1465 | return result; /* break; */ | |
1466 | } | |
1467 | if (*result_count > result_limit) | |
1468 | { | |
1469 | *result_count = 0; | |
1470 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1471 | return 0; | |
1472 | } | |
1473 | return result; | |
1474 | } | |
1475 | ||
1476 | /* This is the interface between remote and threads, remotes upper interface */ | |
1477 | ||
1478 | /* remote_find_new_threads retrieves the thread list and for each | |
1479 | thread in the list, looks up the thread in GDB's internal list, | |
1480 | ading the thread if it does not already exist. This involves | |
1481 | getting partial thread lists from the remote target so, polling the | |
1482 | quit_flag is required. */ | |
1483 | ||
1484 | ||
1485 | /* About this many threadisds fit in a packet. */ | |
1486 | ||
1487 | #define MAXTHREADLISTRESULTS 32 | |
1488 | ||
1489 | static int | |
1490 | remote_threadlist_iterator (stepfunction, context, looplimit) | |
1491 | rmt_thread_action stepfunction; | |
1492 | void *context; | |
1493 | int looplimit; | |
1494 | { | |
1495 | int done, i, result_count; | |
1496 | int startflag = 1; | |
1497 | int result = 1; | |
1498 | int loopcount = 0; | |
1499 | static threadref nextthread; | |
1500 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1501 | ||
1502 | done = 0; | |
1503 | while (!done) | |
1504 | { | |
1505 | if (loopcount++ > looplimit) | |
1506 | { | |
1507 | result = 0; | |
1508 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1509 | break; | |
1510 | } | |
1511 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1512 | &done, &result_count, resultthreadlist)) | |
1513 | { | |
1514 | result = 0; | |
1515 | break; | |
1516 | } | |
1517 | /* clear for later iterations */ | |
1518 | startflag = 0; | |
1519 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1520 | if (result_count >= 1) | |
1521 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1522 | i = 0; | |
1523 | while (result_count--) | |
1524 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1525 | break; | |
1526 | } | |
1527 | return result; | |
1528 | } | |
1529 | ||
1530 | static int | |
1531 | remote_newthread_step (ref, context) | |
1532 | threadref *ref; | |
1533 | void *context; | |
1534 | { | |
1535 | int pid; | |
1536 | ||
1537 | pid = threadref_to_int (ref); | |
1538 | if (!in_thread_list (pid)) | |
1539 | add_thread (pid); | |
1540 | return 1; /* continue iterator */ | |
1541 | } | |
1542 | ||
1543 | #define CRAZY_MAX_THREADS 1000 | |
1544 | ||
1545 | static int | |
1546 | remote_current_thread (oldpid) | |
1547 | int oldpid; | |
1548 | { | |
085dd6e6 | 1549 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1550 | |
1551 | putpkt ("qC"); | |
1552 | getpkt (buf, 0); | |
1553 | if (buf[0] == 'Q' && buf[1] == 'C') | |
1554 | return strtol (&buf[2], NULL, 16); | |
1555 | else | |
1556 | return oldpid; | |
1557 | } | |
1558 | ||
cce74817 JM |
1559 | /* Find new threads for info threads command. */ |
1560 | ||
1561 | static void | |
c906108c SS |
1562 | remote_find_new_threads () |
1563 | { | |
c5aa993b JM |
1564 | remote_threadlist_iterator (remote_newthread_step, 0, |
1565 | CRAZY_MAX_THREADS); | |
c906108c SS |
1566 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1567 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1568 | } |
1569 | ||
0f71a2f6 JM |
1570 | static void |
1571 | remote_threads_info (void) | |
1572 | { | |
085dd6e6 JM |
1573 | char *buf = alloca (PBUFSIZ); |
1574 | char *bufp; | |
0f71a2f6 JM |
1575 | int tid; |
1576 | ||
1577 | if (remote_desc == 0) /* paranoia */ | |
1578 | error ("Command can only be used when connected to the remote target."); | |
1579 | ||
1580 | putpkt ("qfThreadInfo"); | |
1581 | getpkt (bufp = buf, 0); | |
1582 | if (bufp[0] == '\0') /* q packet not recognized! */ | |
1583 | { /* try old jmetzler method */ | |
1584 | remote_find_new_threads (); | |
1585 | return; | |
1586 | } | |
1587 | else /* try new 'q' method */ | |
c5aa993b | 1588 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
0f71a2f6 | 1589 | { |
c5aa993b JM |
1590 | do |
1591 | { | |
1592 | tid = strtol (bufp, &bufp, 16); | |
1593 | if (tid != 0 && !in_thread_list (tid)) | |
1594 | add_thread (tid); | |
1595 | } | |
1596 | while (*bufp++ == ','); /* comma-separated list */ | |
0f71a2f6 JM |
1597 | putpkt ("qsThreadInfo"); |
1598 | getpkt (bufp = buf, 0); | |
1599 | } | |
1600 | } | |
c906108c | 1601 | \f |
c5aa993b | 1602 | |
c906108c SS |
1603 | /* Restart the remote side; this is an extended protocol operation. */ |
1604 | ||
1605 | static void | |
1606 | extended_remote_restart () | |
1607 | { | |
085dd6e6 | 1608 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1609 | |
1610 | /* Send the restart command; for reasons I don't understand the | |
1611 | remote side really expects a number after the "R". */ | |
1612 | buf[0] = 'R'; | |
1613 | sprintf (&buf[1], "%x", 0); | |
1614 | putpkt (buf); | |
1615 | ||
1616 | /* Now query for status so this looks just like we restarted | |
1617 | gdbserver from scratch. */ | |
1618 | putpkt ("?"); | |
1619 | getpkt (buf, 0); | |
1620 | } | |
1621 | \f | |
1622 | /* Clean up connection to a remote debugger. */ | |
1623 | ||
1624 | /* ARGSUSED */ | |
1625 | static void | |
1626 | remote_close (quitting) | |
1627 | int quitting; | |
1628 | { | |
1629 | if (remote_desc) | |
1630 | SERIAL_CLOSE (remote_desc); | |
1631 | remote_desc = NULL; | |
1632 | } | |
1633 | ||
1634 | /* Query the remote side for the text, data and bss offsets. */ | |
1635 | ||
1636 | static void | |
1637 | get_offsets () | |
1638 | { | |
085dd6e6 JM |
1639 | char *buf = alloca (PBUFSIZ); |
1640 | char *ptr; | |
c906108c SS |
1641 | int lose; |
1642 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1643 | struct section_offsets *offs; | |
1644 | ||
1645 | putpkt ("qOffsets"); | |
1646 | ||
1647 | getpkt (buf, 0); | |
1648 | ||
1649 | if (buf[0] == '\000') | |
1650 | return; /* Return silently. Stub doesn't support | |
1651 | this command. */ | |
1652 | if (buf[0] == 'E') | |
1653 | { | |
1654 | warning ("Remote failure reply: %s", buf); | |
1655 | return; | |
1656 | } | |
1657 | ||
1658 | /* Pick up each field in turn. This used to be done with scanf, but | |
1659 | scanf will make trouble if CORE_ADDR size doesn't match | |
1660 | conversion directives correctly. The following code will work | |
1661 | with any size of CORE_ADDR. */ | |
1662 | text_addr = data_addr = bss_addr = 0; | |
1663 | ptr = buf; | |
1664 | lose = 0; | |
1665 | ||
1666 | if (strncmp (ptr, "Text=", 5) == 0) | |
1667 | { | |
1668 | ptr += 5; | |
1669 | /* Don't use strtol, could lose on big values. */ | |
1670 | while (*ptr && *ptr != ';') | |
1671 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1672 | } | |
1673 | else | |
1674 | lose = 1; | |
1675 | ||
1676 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1677 | { | |
1678 | ptr += 6; | |
1679 | while (*ptr && *ptr != ';') | |
1680 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1681 | } | |
1682 | else | |
1683 | lose = 1; | |
1684 | ||
1685 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1686 | { | |
1687 | ptr += 5; | |
1688 | while (*ptr && *ptr != ';') | |
1689 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1690 | } | |
1691 | else | |
1692 | lose = 1; | |
1693 | ||
1694 | if (lose) | |
1695 | error ("Malformed response to offset query, %s", buf); | |
1696 | ||
1697 | if (symfile_objfile == NULL) | |
1698 | return; | |
1699 | ||
d4f3574e SS |
1700 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1701 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c SS |
1702 | |
1703 | ANOFFSET (offs, SECT_OFF_TEXT) = text_addr; | |
1704 | ||
1705 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1706 | because that's what nlmconv does now. The real solution requires changes | |
1707 | to the stub and remote.c that I don't have time to do right now. */ | |
1708 | ||
1709 | ANOFFSET (offs, SECT_OFF_DATA) = data_addr; | |
1710 | ANOFFSET (offs, SECT_OFF_BSS) = data_addr; | |
1711 | ||
1712 | objfile_relocate (symfile_objfile, offs); | |
1713 | } | |
1714 | ||
0f71a2f6 JM |
1715 | /* |
1716 | * Cisco version of section offsets: | |
1717 | * | |
1718 | * Instead of having GDB query the target for the section offsets, | |
1719 | * Cisco lets the target volunteer the information! It's also in | |
1720 | * a different format, so here are the functions that will decode | |
1721 | * a section offset packet from a Cisco target. | |
1722 | */ | |
1723 | ||
1724 | /* | |
1725 | * Function: remote_cisco_section_offsets | |
1726 | * | |
1727 | * Returns: zero for success, non-zero for failure | |
1728 | */ | |
1729 | ||
c5aa993b JM |
1730 | static int |
1731 | remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
0f71a2f6 JM |
1732 | text_offs, data_offs, bss_offs) |
1733 | bfd_vma text_addr; | |
1734 | bfd_vma data_addr; | |
1735 | bfd_vma bss_addr; | |
c5aa993b JM |
1736 | bfd_signed_vma *text_offs; |
1737 | bfd_signed_vma *data_offs; | |
1738 | bfd_signed_vma *bss_offs; | |
0f71a2f6 JM |
1739 | { |
1740 | bfd_vma text_base, data_base, bss_base; | |
1741 | struct minimal_symbol *start; | |
1742 | asection *sect; | |
c5aa993b | 1743 | bfd *abfd; |
0f71a2f6 JM |
1744 | int len; |
1745 | char *p; | |
1746 | ||
1747 | if (symfile_objfile == NULL) | |
c5aa993b | 1748 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1749 | |
1750 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1751 | if (start == NULL) | |
c5aa993b | 1752 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1753 | |
1754 | data_base = bss_base = 0; | |
1755 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1756 | ||
1757 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1758 | for (sect = abfd->sections; |
0f71a2f6 JM |
1759 | sect != 0; |
1760 | sect = sect->next) | |
1761 | { | |
c5aa993b | 1762 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1763 | len = strlen (p); |
1764 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1765 | if (data_base == 0 || | |
1766 | data_base > bfd_get_section_vma (abfd, sect)) | |
1767 | data_base = bfd_get_section_vma (abfd, sect); | |
1768 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1769 | if (bss_base == 0 || |
0f71a2f6 JM |
1770 | bss_base > bfd_get_section_vma (abfd, sect)) |
1771 | bss_base = bfd_get_section_vma (abfd, sect); | |
1772 | } | |
1773 | *text_offs = text_addr - text_base; | |
1774 | *data_offs = data_addr - data_base; | |
c5aa993b | 1775 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1776 | if (remote_debug) |
1777 | { | |
1778 | char tmp[128]; | |
1779 | ||
1780 | sprintf (tmp, "VMA: text = 0x"); | |
1781 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1782 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1783 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1784 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1785 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1786 | fprintf_filtered (gdb_stdlog, tmp); | |
1787 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1788 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1789 | paddr_nz (*text_offs), | |
1790 | paddr_nz (*data_offs), | |
1791 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1792 | } |
1793 | ||
1794 | return 0; | |
1795 | } | |
1796 | ||
1797 | /* | |
1798 | * Function: remote_cisco_objfile_relocate | |
1799 | * | |
1800 | * Relocate the symbol file for a remote target. | |
1801 | */ | |
1802 | ||
96baa820 | 1803 | void |
0f71a2f6 JM |
1804 | remote_cisco_objfile_relocate (text_off, data_off, bss_off) |
1805 | bfd_signed_vma text_off; | |
1806 | bfd_signed_vma data_off; | |
1807 | bfd_signed_vma bss_off; | |
1808 | { | |
1809 | struct section_offsets *offs; | |
1810 | ||
c5aa993b | 1811 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1812 | { |
1813 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1814 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1815 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1816 | |
d4f3574e SS |
1817 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1818 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 JM |
1819 | |
1820 | ANOFFSET (offs, SECT_OFF_TEXT) = text_off; | |
1821 | ANOFFSET (offs, SECT_OFF_DATA) = data_off; | |
c5aa993b | 1822 | ANOFFSET (offs, SECT_OFF_BSS) = bss_off; |
0f71a2f6 JM |
1823 | |
1824 | /* First call the standard objfile_relocate. */ | |
1825 | objfile_relocate (symfile_objfile, offs); | |
1826 | ||
1827 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1828 | the exec target. These entries will control memory transfers |
1829 | from the exec file. */ | |
0f71a2f6 JM |
1830 | |
1831 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1832 | } | |
1833 | } | |
1834 | ||
c906108c SS |
1835 | /* Stub for catch_errors. */ |
1836 | ||
0f71a2f6 JM |
1837 | static int |
1838 | remote_start_remote_dummy (dummy) | |
1839 | char *dummy; | |
1840 | { | |
1841 | start_remote (); /* Initialize gdb process mechanisms */ | |
1842 | return 1; | |
1843 | } | |
1844 | ||
c906108c SS |
1845 | static int |
1846 | remote_start_remote (dummy) | |
1847 | PTR dummy; | |
1848 | { | |
1849 | immediate_quit = 1; /* Allow user to interrupt it */ | |
1850 | ||
1851 | /* Ack any packet which the remote side has already sent. */ | |
1852 | SERIAL_WRITE (remote_desc, "+", 1); | |
1853 | ||
1854 | /* Let the stub know that we want it to return the thread. */ | |
1855 | set_thread (-1, 0); | |
1856 | ||
1857 | inferior_pid = remote_current_thread (inferior_pid); | |
1858 | ||
1859 | get_offsets (); /* Get text, data & bss offsets */ | |
1860 | ||
1861 | putpkt ("?"); /* initiate a query from remote machine */ | |
1862 | immediate_quit = 0; | |
1863 | ||
0f71a2f6 | 1864 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1865 | } |
1866 | ||
1867 | /* Open a connection to a remote debugger. | |
1868 | NAME is the filename used for communication. */ | |
1869 | ||
1870 | static void | |
1871 | remote_open (name, from_tty) | |
1872 | char *name; | |
1873 | int from_tty; | |
1874 | { | |
1875 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
1876 | } | |
1877 | ||
43ff13b4 JM |
1878 | /* Just like remote_open, but with asynchronous support. */ |
1879 | static void | |
1880 | remote_async_open (name, from_tty) | |
1881 | char *name; | |
1882 | int from_tty; | |
1883 | { | |
1884 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
1885 | } | |
1886 | ||
c906108c SS |
1887 | /* Open a connection to a remote debugger using the extended |
1888 | remote gdb protocol. NAME is the filename used for communication. */ | |
1889 | ||
1890 | static void | |
1891 | extended_remote_open (name, from_tty) | |
1892 | char *name; | |
1893 | int from_tty; | |
1894 | { | |
c5aa993b | 1895 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
1896 | } |
1897 | ||
43ff13b4 JM |
1898 | /* Just like extended_remote_open, but with asynchronous support. */ |
1899 | static void | |
1900 | extended_remote_async_open (name, from_tty) | |
1901 | char *name; | |
1902 | int from_tty; | |
1903 | { | |
c5aa993b | 1904 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
1905 | } |
1906 | ||
c906108c SS |
1907 | /* Generic code for opening a connection to a remote target. */ |
1908 | ||
1909 | static DCACHE *remote_dcache; | |
1910 | ||
1911 | static void | |
1912 | remote_open_1 (name, from_tty, target, extended_p) | |
1913 | char *name; | |
1914 | int from_tty; | |
1915 | struct target_ops *target; | |
1916 | int extended_p; | |
1917 | { | |
1918 | if (name == 0) | |
1919 | error ("To open a remote debug connection, you need to specify what\n\ | |
1920 | serial device is attached to the remote system (e.g. /dev/ttya)."); | |
1921 | ||
6426a772 JM |
1922 | /* See FIXME above */ |
1923 | wait_forever_enabled_p = 1; | |
1924 | ||
c906108c SS |
1925 | target_preopen (from_tty); |
1926 | ||
1927 | unpush_target (target); | |
1928 | ||
1929 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
1930 | ||
1931 | remote_desc = SERIAL_OPEN (name); | |
1932 | if (!remote_desc) | |
1933 | perror_with_name (name); | |
1934 | ||
1935 | if (baud_rate != -1) | |
1936 | { | |
1937 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
1938 | { | |
1939 | SERIAL_CLOSE (remote_desc); | |
1940 | perror_with_name (name); | |
1941 | } | |
1942 | } | |
1943 | ||
c906108c SS |
1944 | SERIAL_RAW (remote_desc); |
1945 | ||
1946 | /* If there is something sitting in the buffer we might take it as a | |
1947 | response to a command, which would be bad. */ | |
1948 | SERIAL_FLUSH_INPUT (remote_desc); | |
1949 | ||
1950 | if (from_tty) | |
1951 | { | |
1952 | puts_filtered ("Remote debugging using "); | |
1953 | puts_filtered (name); | |
1954 | puts_filtered ("\n"); | |
1955 | } | |
c5aa993b | 1956 | push_target (target); /* Switch to using remote target now */ |
c906108c | 1957 | |
5a2468f5 | 1958 | init_packet_config (&remote_protocol_P); |
96baa820 JM |
1959 | init_packet_config (&remote_protocol_Z); |
1960 | ||
c5aa993b | 1961 | general_thread = -2; |
cce74817 | 1962 | continue_thread = -2; |
c906108c SS |
1963 | |
1964 | /* Force remote_write_bytes to check whether target supports | |
1965 | binary downloading. */ | |
96baa820 | 1966 | init_packet_config (&remote_protocol_binary_download); |
c906108c SS |
1967 | |
1968 | /* Without this, some commands which require an active target (such | |
1969 | as kill) won't work. This variable serves (at least) double duty | |
1970 | as both the pid of the target process (if it has such), and as a | |
1971 | flag indicating that a target is active. These functions should | |
1972 | be split out into seperate variables, especially since GDB will | |
1973 | someday have a notion of debugging several processes. */ | |
1974 | ||
1975 | inferior_pid = MAGIC_NULL_PID; | |
1976 | /* Start the remote connection; if error (0), discard this target. | |
1977 | In particular, if the user quits, be sure to discard it | |
1978 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
1979 | if (!catch_errors (remote_start_remote, NULL, |
1980 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
1981 | RETURN_MASK_ALL)) |
1982 | { | |
1983 | pop_target (); | |
1984 | return; | |
1985 | } | |
1986 | ||
1987 | if (extended_p) | |
1988 | { | |
1989 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 1990 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1991 | putpkt ("!"); |
1992 | getpkt (buf, 0); | |
1993 | } | |
1994 | } | |
1995 | ||
43ff13b4 JM |
1996 | /* Just like remote_open but with asynchronous support. */ |
1997 | static void | |
1998 | remote_async_open_1 (name, from_tty, target, extended_p) | |
1999 | char *name; | |
2000 | int from_tty; | |
2001 | struct target_ops *target; | |
2002 | int extended_p; | |
2003 | { | |
2004 | if (name == 0) | |
2005 | error ("To open a remote debug connection, you need to specify what\n\ | |
2006 | serial device is attached to the remote system (e.g. /dev/ttya)."); | |
2007 | ||
2008 | target_preopen (from_tty); | |
2009 | ||
2010 | unpush_target (target); | |
2011 | ||
2012 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
2013 | ||
2014 | remote_desc = SERIAL_OPEN (name); | |
2015 | if (!remote_desc) | |
2016 | perror_with_name (name); | |
2017 | ||
2018 | if (baud_rate != -1) | |
2019 | { | |
2020 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2021 | { | |
2022 | SERIAL_CLOSE (remote_desc); | |
2023 | perror_with_name (name); | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | SERIAL_RAW (remote_desc); | |
2028 | ||
2029 | /* If there is something sitting in the buffer we might take it as a | |
2030 | response to a command, which would be bad. */ | |
2031 | SERIAL_FLUSH_INPUT (remote_desc); | |
2032 | ||
2033 | if (from_tty) | |
2034 | { | |
2035 | puts_filtered ("Remote debugging using "); | |
2036 | puts_filtered (name); | |
2037 | puts_filtered ("\n"); | |
2038 | } | |
2039 | ||
c5aa993b | 2040 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2041 | |
5a2468f5 | 2042 | init_packet_config (&remote_protocol_P); |
96baa820 | 2043 | init_packet_config (&remote_protocol_Z); |
43ff13b4 | 2044 | |
c5aa993b | 2045 | general_thread = -2; |
43ff13b4 JM |
2046 | continue_thread = -2; |
2047 | ||
2048 | /* Force remote_write_bytes to check whether target supports | |
2049 | binary downloading. */ | |
96baa820 | 2050 | init_packet_config (&remote_protocol_binary_download); |
43ff13b4 | 2051 | |
43ff13b4 JM |
2052 | /* Without this, some commands which require an active target (such |
2053 | as kill) won't work. This variable serves (at least) double duty | |
2054 | as both the pid of the target process (if it has such), and as a | |
2055 | flag indicating that a target is active. These functions should | |
2056 | be split out into seperate variables, especially since GDB will | |
2057 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2058 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2059 | |
2060 | /* With this target we start out by owning the terminal. */ | |
2061 | remote_async_terminal_ours_p = 1; | |
2062 | ||
2063 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2064 | assumed that the target is already ready and able to respond to | |
2065 | requests. Unfortunatly remote_start_remote() eventually calls | |
2066 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2067 | around this. Eventually a mechanism that allows | |
2068 | wait_for_inferior() to expect/get timeouts will be | |
2069 | implemented. */ | |
2070 | wait_forever_enabled_p = 0; | |
2071 | ||
43ff13b4 JM |
2072 | /* Start the remote connection; if error (0), discard this target. |
2073 | In particular, if the user quits, be sure to discard it | |
2074 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2075 | if (!catch_errors (remote_start_remote, NULL, |
2076 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2077 | RETURN_MASK_ALL)) |
2078 | { | |
43ff13b4 | 2079 | pop_target (); |
6426a772 | 2080 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2081 | return; |
2082 | } | |
2083 | ||
6426a772 JM |
2084 | wait_forever_enabled_p = 1; |
2085 | ||
2086 | if (extended_p) | |
43ff13b4 | 2087 | { |
6426a772 JM |
2088 | /* tell the remote that we're using the extended protocol. */ |
2089 | char *buf = alloca (PBUFSIZ); | |
2090 | putpkt ("!"); | |
2091 | getpkt (buf, 0); | |
43ff13b4 | 2092 | } |
43ff13b4 JM |
2093 | } |
2094 | ||
c906108c SS |
2095 | /* This takes a program previously attached to and detaches it. After |
2096 | this is done, GDB can be used to debug some other program. We | |
2097 | better not have left any breakpoints in the target program or it'll | |
2098 | die when it hits one. */ | |
2099 | ||
2100 | static void | |
2101 | remote_detach (args, from_tty) | |
2102 | char *args; | |
2103 | int from_tty; | |
2104 | { | |
085dd6e6 | 2105 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2106 | |
2107 | if (args) | |
2108 | error ("Argument given to \"detach\" when remotely debugging."); | |
2109 | ||
2110 | /* Tell the remote target to detach. */ | |
2111 | strcpy (buf, "D"); | |
2112 | remote_send (buf); | |
2113 | ||
2114 | pop_target (); | |
2115 | if (from_tty) | |
2116 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2117 | |
c906108c SS |
2118 | } |
2119 | ||
43ff13b4 JM |
2120 | /* Same as remote_detach, but with async support. */ |
2121 | static void | |
2122 | remote_async_detach (args, from_tty) | |
2123 | char *args; | |
2124 | int from_tty; | |
2125 | { | |
2126 | char *buf = alloca (PBUFSIZ); | |
2127 | ||
2128 | if (args) | |
2129 | error ("Argument given to \"detach\" when remotely debugging."); | |
2130 | ||
2131 | /* Tell the remote target to detach. */ | |
2132 | strcpy (buf, "D"); | |
2133 | remote_send (buf); | |
2134 | ||
2135 | /* Unregister the file descriptor from the event loop. */ | |
c2c6d25f JM |
2136 | if (SERIAL_IS_ASYNC_P (remote_desc)) |
2137 | SERIAL_ASYNC (remote_desc, NULL, 0); | |
43ff13b4 JM |
2138 | |
2139 | pop_target (); | |
2140 | if (from_tty) | |
2141 | puts_filtered ("Ending remote debugging.\n"); | |
2142 | } | |
2143 | ||
c906108c SS |
2144 | /* Convert hex digit A to a number. */ |
2145 | ||
2146 | int | |
2147 | fromhex (a) | |
2148 | int a; | |
2149 | { | |
2150 | if (a >= '0' && a <= '9') | |
2151 | return a - '0'; | |
2152 | else if (a >= 'a' && a <= 'f') | |
2153 | return a - 'a' + 10; | |
2154 | else if (a >= 'A' && a <= 'F') | |
2155 | return a - 'A' + 10; | |
c5aa993b | 2156 | else |
c906108c SS |
2157 | error ("Reply contains invalid hex digit %d", a); |
2158 | } | |
2159 | ||
2160 | /* Convert number NIB to a hex digit. */ | |
2161 | ||
2162 | static int | |
2163 | tohex (nib) | |
2164 | int nib; | |
2165 | { | |
2166 | if (nib < 10) | |
c5aa993b | 2167 | return '0' + nib; |
c906108c | 2168 | else |
c5aa993b | 2169 | return 'a' + nib - 10; |
c906108c SS |
2170 | } |
2171 | \f | |
2172 | /* Tell the remote machine to resume. */ | |
2173 | ||
2174 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2175 | ||
2176 | static int last_sent_step; | |
2177 | ||
2178 | static void | |
2179 | remote_resume (pid, step, siggnal) | |
2180 | int pid, step; | |
2181 | enum target_signal siggnal; | |
2182 | { | |
085dd6e6 | 2183 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2184 | |
2185 | if (pid == -1) | |
2186 | set_thread (0, 0); /* run any thread */ | |
2187 | else | |
2188 | set_thread (pid, 0); /* run this thread */ | |
2189 | ||
2190 | dcache_flush (remote_dcache); | |
2191 | ||
2192 | last_sent_signal = siggnal; | |
2193 | last_sent_step = step; | |
2194 | ||
2195 | /* A hook for when we need to do something at the last moment before | |
2196 | resumption. */ | |
2197 | if (target_resume_hook) | |
2198 | (*target_resume_hook) (); | |
2199 | ||
2200 | if (siggnal != TARGET_SIGNAL_0) | |
2201 | { | |
2202 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2203 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2204 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2205 | buf[3] = '\0'; |
2206 | } | |
2207 | else | |
c5aa993b | 2208 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2209 | |
2210 | putpkt (buf); | |
2211 | } | |
43ff13b4 JM |
2212 | |
2213 | /* Same as remote_resume, but with async support. */ | |
2214 | static void | |
2215 | remote_async_resume (pid, step, siggnal) | |
2216 | int pid, step; | |
2217 | enum target_signal siggnal; | |
2218 | { | |
2219 | char *buf = alloca (PBUFSIZ); | |
2220 | ||
2221 | if (pid == -1) | |
2222 | set_thread (0, 0); /* run any thread */ | |
2223 | else | |
2224 | set_thread (pid, 0); /* run this thread */ | |
2225 | ||
2226 | dcache_flush (remote_dcache); | |
2227 | ||
2228 | last_sent_signal = siggnal; | |
2229 | last_sent_step = step; | |
2230 | ||
2231 | /* A hook for when we need to do something at the last moment before | |
2232 | resumption. */ | |
2233 | if (target_resume_hook) | |
2234 | (*target_resume_hook) (); | |
2235 | ||
43ff13b4 JM |
2236 | if (siggnal != TARGET_SIGNAL_0) |
2237 | { | |
2238 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2239 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2240 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2241 | buf[3] = '\0'; |
2242 | } | |
2243 | else | |
c5aa993b | 2244 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 | 2245 | |
2acceee2 JM |
2246 | /* We are about to start executing the inferior, let's register it |
2247 | with the event loop. NOTE: this is the one place where all the | |
2248 | execution commands end up. We could alternatively do this in each | |
2249 | of the execution commands in infcmd.c.*/ | |
2250 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2251 | into infcmd.c in order to allow inferior function calls to work | |
2252 | NOT asynchronously. */ | |
2253 | if (event_loop_p && SERIAL_CAN_ASYNC_P (remote_desc)) | |
2254 | target_async (inferior_event_handler, 0); | |
2255 | /* Tell the world that the target is now executing. */ | |
2256 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2257 | this? Instead, should the client of target just assume (for | |
2258 | async targets) that the target is going to start executing? Is | |
2259 | this information already found in the continuation block? */ | |
2260 | if (SERIAL_IS_ASYNC_P (remote_desc)) | |
2261 | target_executing = 1; | |
43ff13b4 JM |
2262 | putpkt (buf); |
2263 | } | |
c906108c | 2264 | \f |
43ff13b4 JM |
2265 | |
2266 | /* Set up the signal handler for SIGINT, while the target is | |
2267 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2268 | static void | |
2269 | initialize_sigint_signal_handler () | |
2270 | { | |
c5aa993b | 2271 | sigint_remote_token = |
43ff13b4 JM |
2272 | create_async_signal_handler (async_remote_interrupt, NULL); |
2273 | signal (SIGINT, handle_remote_sigint); | |
2274 | } | |
2275 | ||
2276 | /* Signal handler for SIGINT, while the target is executing. */ | |
2277 | static void | |
2278 | handle_remote_sigint (sig) | |
2279 | int sig; | |
2280 | { | |
2281 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2282 | sigint_remote_twice_token = |
43ff13b4 JM |
2283 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2284 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2285 | } | |
2286 | ||
2287 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2288 | sent once. It will take effect the second time that the user sends | |
2289 | a ^C. */ | |
2290 | static void | |
2291 | handle_remote_sigint_twice (sig) | |
2292 | int sig; | |
2293 | { | |
2294 | signal (sig, handle_sigint); | |
c5aa993b | 2295 | sigint_remote_twice_token = |
2df3850c | 2296 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2297 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2298 | } | |
2299 | ||
6426a772 | 2300 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2301 | to a ^C. */ |
c5aa993b | 2302 | static void |
43ff13b4 JM |
2303 | async_remote_interrupt (arg) |
2304 | gdb_client_data arg; | |
2305 | { | |
2306 | if (remote_debug) | |
2307 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2308 | ||
2309 | target_stop (); | |
2310 | } | |
2311 | ||
2312 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2313 | up on the target alltogether. */ | |
2df3850c | 2314 | void |
43ff13b4 JM |
2315 | async_remote_interrupt_twice (arg) |
2316 | gdb_client_data arg; | |
2317 | { | |
2df3850c JM |
2318 | if (remote_debug) |
2319 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2320 | /* Do something only if the target was not killed by the previous |
2321 | cntl-C. */ | |
2322 | if (target_executing) | |
2323 | { | |
2324 | interrupt_query (); | |
2325 | signal (SIGINT, handle_remote_sigint); | |
2326 | } | |
43ff13b4 JM |
2327 | } |
2328 | ||
2329 | /* Reinstall the usual SIGINT handlers, after the target has | |
2330 | stopped. */ | |
6426a772 JM |
2331 | static void |
2332 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2333 | { |
2334 | signal (SIGINT, handle_sigint); | |
2335 | if (sigint_remote_twice_token) | |
c2c6d25f | 2336 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2337 | if (sigint_remote_token) |
c2c6d25f | 2338 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2339 | } |
2340 | ||
c906108c SS |
2341 | /* Send ^C to target to halt it. Target will respond, and send us a |
2342 | packet. */ | |
c906108c SS |
2343 | static void (*ofunc) PARAMS ((int)); |
2344 | ||
7a292a7a SS |
2345 | /* The command line interface's stop routine. This function is installed |
2346 | as a signal handler for SIGINT. The first time a user requests a | |
2347 | stop, we call remote_stop to send a break or ^C. If there is no | |
2348 | response from the target (it didn't stop when the user requested it), | |
2349 | we ask the user if he'd like to detach from the target. */ | |
c906108c SS |
2350 | static void |
2351 | remote_interrupt (signo) | |
2352 | int signo; | |
2353 | { | |
7a292a7a SS |
2354 | /* If this doesn't work, try more severe steps. */ |
2355 | signal (signo, remote_interrupt_twice); | |
2356 | ||
2357 | if (remote_debug) | |
0f71a2f6 | 2358 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2359 | |
2360 | target_stop (); | |
2361 | } | |
2362 | ||
2363 | /* The user typed ^C twice. */ | |
2364 | ||
2365 | static void | |
2366 | remote_interrupt_twice (signo) | |
2367 | int signo; | |
2368 | { | |
2369 | signal (signo, ofunc); | |
2370 | interrupt_query (); | |
c906108c SS |
2371 | signal (signo, remote_interrupt); |
2372 | } | |
7a292a7a SS |
2373 | |
2374 | /* This is the generic stop called via the target vector. When a target | |
2375 | interrupt is requested, either by the command line or the GUI, we | |
2376 | will eventually end up here. */ | |
c906108c SS |
2377 | static void |
2378 | remote_stop () | |
2379 | { | |
7a292a7a SS |
2380 | /* Send a break or a ^C, depending on user preference. */ |
2381 | if (remote_debug) | |
0f71a2f6 | 2382 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2383 | |
7a292a7a SS |
2384 | if (remote_break) |
2385 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2386 | else |
7a292a7a | 2387 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2388 | } |
2389 | ||
2390 | /* Ask the user what to do when an interrupt is received. */ | |
2391 | ||
2392 | static void | |
2393 | interrupt_query () | |
2394 | { | |
2395 | target_terminal_ours (); | |
2396 | ||
2397 | if (query ("Interrupted while waiting for the program.\n\ | |
2398 | Give up (and stop debugging it)? ")) | |
2399 | { | |
2400 | target_mourn_inferior (); | |
2401 | return_to_top_level (RETURN_QUIT); | |
2402 | } | |
2403 | ||
2404 | target_terminal_inferior (); | |
2405 | } | |
2406 | ||
6426a772 JM |
2407 | /* Enable/disable target terminal ownership. Most targets can use |
2408 | terminal groups to control terminal ownership. Remote targets are | |
2409 | different in that explicit transfer of ownership to/from GDB/target | |
2410 | is required. */ | |
2411 | ||
2412 | static void | |
2413 | remote_async_terminal_inferior (void) | |
2414 | { | |
2415 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2416 | sync_execution here. This function should only be called when | |
2417 | GDB is resuming the inferior in the forground. A background | |
2418 | resume (``run&'') should leave GDB in control of the terminal and | |
2419 | consequently should not call this code. */ | |
2420 | if (!sync_execution) | |
2421 | return; | |
2422 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2423 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2424 | to an asynchronous target with a synchronous command calls this | |
2425 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2426 | stops trying to transfer the terminal to the target when it | |
2427 | shouldn't this guard can go away. */ | |
2428 | if (!remote_async_terminal_ours_p) | |
2429 | return; | |
2430 | delete_file_handler (input_fd); | |
2431 | remote_async_terminal_ours_p = 0; | |
2432 | initialize_sigint_signal_handler (); | |
2433 | /* NOTE: At this point we could also register our selves as the | |
2434 | recipient of all input. Any characters typed could then be | |
2435 | passed on down to the target. */ | |
2436 | } | |
2437 | ||
2438 | static void | |
2439 | remote_async_terminal_ours (void) | |
2440 | { | |
2441 | /* See FIXME in remote_async_terminal_inferior. */ | |
2442 | if (!sync_execution) | |
2443 | return; | |
2444 | /* See FIXME in remote_async_terminal_inferior. */ | |
2445 | if (remote_async_terminal_ours_p) | |
2446 | return; | |
2447 | cleanup_sigint_signal_handler (NULL); | |
2448 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2449 | remote_async_terminal_ours_p = 1; | |
2450 | } | |
2451 | ||
c906108c SS |
2452 | /* If nonzero, ignore the next kill. */ |
2453 | ||
2454 | int kill_kludge; | |
2455 | ||
2456 | void | |
917317f4 | 2457 | remote_console_output (char *msg) |
c906108c SS |
2458 | { |
2459 | char *p; | |
2460 | ||
c5aa993b | 2461 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2462 | { |
2463 | char tb[2]; | |
2464 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2465 | tb[0] = c; | |
2466 | tb[1] = 0; | |
43ff13b4 | 2467 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2468 | } |
917317f4 | 2469 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2470 | } |
2471 | ||
0f71a2f6 JM |
2472 | /* Wait until the remote machine stops, then return, |
2473 | storing status in STATUS just as `wait' would. | |
2474 | Returns "pid", which in the case of a multi-threaded | |
2475 | remote OS, is the thread-id. */ | |
c906108c SS |
2476 | |
2477 | static int | |
2478 | remote_wait (pid, status) | |
2479 | int pid; | |
2480 | struct target_waitstatus *status; | |
2481 | { | |
085dd6e6 | 2482 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2483 | int thread_num = -1; |
2484 | ||
2485 | status->kind = TARGET_WAITKIND_EXITED; | |
2486 | status->value.integer = 0; | |
2487 | ||
2488 | while (1) | |
2489 | { | |
2490 | unsigned char *p; | |
2491 | ||
c906108c SS |
2492 | ofunc = signal (SIGINT, remote_interrupt); |
2493 | getpkt ((char *) buf, 1); | |
2494 | signal (SIGINT, ofunc); | |
2495 | ||
2496 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2497 | collection of trace data) every time the target stops. */ |
c906108c SS |
2498 | if (target_wait_loop_hook) |
2499 | (*target_wait_loop_hook) (); | |
2500 | ||
2501 | switch (buf[0]) | |
2502 | { | |
2503 | case 'E': /* Error of some sort */ | |
2504 | warning ("Remote failure reply: %s", buf); | |
2505 | continue; | |
2506 | case 'T': /* Status with PC, SP, FP, ... */ | |
2507 | { | |
2508 | int i; | |
2509 | long regno; | |
2510 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2511 | ||
2512 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2513 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2514 | ss = signal number |
2515 | n... = register number | |
2516 | r... = register contents | |
2517 | */ | |
c906108c SS |
2518 | p = &buf[3]; /* after Txx */ |
2519 | ||
2520 | while (*p) | |
2521 | { | |
2522 | unsigned char *p1; | |
2523 | char *p_temp; | |
2524 | ||
2525 | /* Read the register number */ | |
2526 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2527 | p1 = (unsigned char *) p_temp; |
c906108c | 2528 | |
c5aa993b | 2529 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2530 | { |
2531 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2532 | if (p1 == NULL) | |
2533 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2534 | Packet: '%s'\n", | |
2535 | p, buf); | |
2536 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2537 | { | |
2538 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2539 | record_currthread (thread_num); | |
2540 | p = (unsigned char *) p_temp; | |
2541 | } | |
2542 | } | |
2543 | else | |
2544 | { | |
2545 | p = p1; | |
2546 | ||
2547 | if (*p++ != ':') | |
2548 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2549 | Packet: '%s'\n", | |
2550 | p, buf); | |
2551 | ||
2552 | if (regno >= NUM_REGS) | |
2553 | warning ("Remote sent bad register number %ld: %s\n\ | |
2554 | Packet: '%s'\n", | |
2555 | regno, p, buf); | |
2556 | ||
2557 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2558 | { | |
2559 | if (p[0] == 0 || p[1] == 0) | |
2560 | warning ("Remote reply is too short: %s", buf); | |
2561 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2562 | p += 2; | |
2563 | } | |
2564 | supply_register (regno, regs); | |
2565 | } | |
2566 | ||
2567 | if (*p++ != ';') | |
2568 | { | |
2569 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2570 | warning (" here: %s", p); |
c906108c SS |
2571 | } |
2572 | } | |
2573 | } | |
2574 | /* fall through */ | |
2575 | case 'S': /* Old style status, just signal only */ | |
2576 | status->kind = TARGET_WAITKIND_STOPPED; | |
2577 | status->value.sig = (enum target_signal) | |
2578 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2579 | ||
0f71a2f6 JM |
2580 | if (buf[3] == 'p') |
2581 | { | |
2582 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2583 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2584 | |
2585 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2586 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2587 | value_from_string ("PDEBUG-")); |
2588 | cisco_kernel_mode = 0; | |
2589 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2590 | record_currthread (thread_num); | |
2591 | } | |
2592 | else if (buf[3] == 'k') | |
2593 | { | |
2594 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2595 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2596 | |
2597 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2598 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2599 | value_from_string ("KDEBUG-")); |
2600 | cisco_kernel_mode = 1; | |
2601 | } | |
c906108c | 2602 | goto got_status; |
0f71a2f6 JM |
2603 | case 'N': /* Cisco special: status and offsets */ |
2604 | { | |
2605 | bfd_vma text_addr, data_addr, bss_addr; | |
2606 | bfd_signed_vma text_off, data_off, bss_off; | |
2607 | unsigned char *p1; | |
2608 | ||
2609 | status->kind = TARGET_WAITKIND_STOPPED; | |
2610 | status->value.sig = (enum target_signal) | |
2611 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2612 | ||
c5aa993b | 2613 | if (symfile_objfile == NULL) |
0f71a2f6 | 2614 | { |
d4f3574e | 2615 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2616 | Packet Dropped"); |
2617 | goto got_status; | |
2618 | } | |
2619 | ||
2620 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2621 | * where AA is the signal number, TT is the new text | |
2622 | * address, DD * is the new data address, and BB is the | |
2623 | * new bss address. */ | |
2624 | ||
2625 | p = &buf[3]; | |
2626 | text_addr = strtoul (p, (char **) &p1, 16); | |
2627 | if (p1 == p || *p1 != ';') | |
2628 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2629 | p = p1 + 1; | |
2630 | data_addr = strtoul (p, (char **) &p1, 16); | |
2631 | if (p1 == p || *p1 != ';') | |
2632 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2633 | p = p1 + 1; | |
2634 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2635 | if (p1 == p) |
0f71a2f6 JM |
2636 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2637 | ||
2638 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2639 | &text_off, &data_off, &bss_off) | |
2640 | == 0) | |
c5aa993b | 2641 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2642 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2643 | ||
2644 | goto got_status; | |
2645 | } | |
c906108c SS |
2646 | case 'W': /* Target exited */ |
2647 | { | |
2648 | /* The remote process exited. */ | |
2649 | status->kind = TARGET_WAITKIND_EXITED; | |
2650 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2651 | goto got_status; | |
2652 | } | |
2653 | case 'X': | |
2654 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2655 | status->value.sig = (enum target_signal) | |
2656 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2657 | kill_kludge = 1; | |
2658 | ||
2659 | goto got_status; | |
2660 | case 'O': /* Console output */ | |
2661 | remote_console_output (buf + 1); | |
2662 | continue; | |
2663 | case '\0': | |
2664 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2665 | { | |
2666 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2667 | the remote system doesn't support it. */ |
c906108c SS |
2668 | target_terminal_ours_for_output (); |
2669 | printf_filtered | |
2670 | ("Can't send signals to this remote system. %s not sent.\n", | |
2671 | target_signal_to_name (last_sent_signal)); | |
2672 | last_sent_signal = TARGET_SIGNAL_0; | |
2673 | target_terminal_inferior (); | |
2674 | ||
2675 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2676 | putpkt ((char *) buf); | |
2677 | continue; | |
2678 | } | |
2679 | /* else fallthrough */ | |
2680 | default: | |
2681 | warning ("Invalid remote reply: %s", buf); | |
2682 | continue; | |
2683 | } | |
2684 | } | |
c5aa993b | 2685 | got_status: |
c906108c SS |
2686 | if (thread_num != -1) |
2687 | { | |
c906108c SS |
2688 | return thread_num; |
2689 | } | |
2690 | return inferior_pid; | |
2691 | } | |
2692 | ||
43ff13b4 JM |
2693 | /* Async version of remote_wait. */ |
2694 | static int | |
2695 | remote_async_wait (pid, status) | |
2696 | int pid; | |
2697 | struct target_waitstatus *status; | |
2698 | { | |
2699 | unsigned char *buf = alloca (PBUFSIZ); | |
2700 | int thread_num = -1; | |
2701 | ||
2702 | status->kind = TARGET_WAITKIND_EXITED; | |
2703 | status->value.integer = 0; | |
2704 | ||
2705 | while (1) | |
2706 | { | |
2707 | unsigned char *p; | |
c5aa993b | 2708 | |
c2c6d25f | 2709 | if (!SERIAL_IS_ASYNC_P (remote_desc)) |
43ff13b4 | 2710 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2711 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2712 | _never_ wait for ever -> test on target_is_async_p(). | |
2713 | However, before we do that we need to ensure that the caller | |
2714 | knows how to take the target into/out of async mode. */ | |
2715 | getpkt ((char *) buf, wait_forever_enabled_p); | |
c2c6d25f | 2716 | if (!SERIAL_IS_ASYNC_P (remote_desc)) |
43ff13b4 JM |
2717 | signal (SIGINT, ofunc); |
2718 | ||
2719 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2720 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2721 | if (target_wait_loop_hook) |
2722 | (*target_wait_loop_hook) (); | |
2723 | ||
2724 | switch (buf[0]) | |
2725 | { | |
2726 | case 'E': /* Error of some sort */ | |
2727 | warning ("Remote failure reply: %s", buf); | |
2728 | continue; | |
2729 | case 'T': /* Status with PC, SP, FP, ... */ | |
2730 | { | |
2731 | int i; | |
2732 | long regno; | |
2733 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2734 | ||
2735 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2736 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2737 | ss = signal number |
2738 | n... = register number | |
2739 | r... = register contents | |
2740 | */ | |
43ff13b4 JM |
2741 | p = &buf[3]; /* after Txx */ |
2742 | ||
2743 | while (*p) | |
2744 | { | |
2745 | unsigned char *p1; | |
2746 | char *p_temp; | |
2747 | ||
2748 | /* Read the register number */ | |
2749 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2750 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2751 | |
c5aa993b | 2752 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2753 | { |
2754 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2755 | if (p1 == NULL) | |
2756 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2757 | Packet: '%s'\n", | |
2758 | p, buf); | |
2759 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2760 | { | |
2761 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2762 | record_currthread (thread_num); | |
2763 | p = (unsigned char *) p_temp; | |
2764 | } | |
2765 | } | |
2766 | else | |
2767 | { | |
2768 | p = p1; | |
2769 | ||
2770 | if (*p++ != ':') | |
2771 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2772 | Packet: '%s'\n", | |
2773 | p, buf); | |
2774 | ||
2775 | if (regno >= NUM_REGS) | |
2776 | warning ("Remote sent bad register number %ld: %s\n\ | |
2777 | Packet: '%s'\n", | |
2778 | regno, p, buf); | |
2779 | ||
2780 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2781 | { | |
2782 | if (p[0] == 0 || p[1] == 0) | |
2783 | warning ("Remote reply is too short: %s", buf); | |
2784 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2785 | p += 2; | |
2786 | } | |
2787 | supply_register (regno, regs); | |
2788 | } | |
2789 | ||
2790 | if (*p++ != ';') | |
2791 | { | |
2792 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2793 | warning (" here: %s", p); |
43ff13b4 JM |
2794 | } |
2795 | } | |
2796 | } | |
2797 | /* fall through */ | |
2798 | case 'S': /* Old style status, just signal only */ | |
2799 | status->kind = TARGET_WAITKIND_STOPPED; | |
2800 | status->value.sig = (enum target_signal) | |
2801 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2802 | ||
2803 | if (buf[3] == 'p') | |
2804 | { | |
2805 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2806 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2807 | |
2808 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2809 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2810 | value_from_string ("PDEBUG-")); |
2811 | cisco_kernel_mode = 0; | |
2812 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2813 | record_currthread (thread_num); | |
2814 | } | |
2815 | else if (buf[3] == 'k') | |
2816 | { | |
2817 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2818 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2819 | |
2820 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2821 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2822 | value_from_string ("KDEBUG-")); |
2823 | cisco_kernel_mode = 1; | |
2824 | } | |
2825 | goto got_status; | |
2826 | case 'N': /* Cisco special: status and offsets */ | |
2827 | { | |
2828 | bfd_vma text_addr, data_addr, bss_addr; | |
2829 | bfd_signed_vma text_off, data_off, bss_off; | |
2830 | unsigned char *p1; | |
2831 | ||
2832 | status->kind = TARGET_WAITKIND_STOPPED; | |
2833 | status->value.sig = (enum target_signal) | |
2834 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2835 | ||
c5aa993b | 2836 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2837 | { |
2838 | warning ("Relocation packet recieved with no symbol file. \ | |
2839 | Packet Dropped"); | |
2840 | goto got_status; | |
2841 | } | |
2842 | ||
2843 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2844 | * where AA is the signal number, TT is the new text | |
2845 | * address, DD * is the new data address, and BB is the | |
2846 | * new bss address. */ | |
2847 | ||
2848 | p = &buf[3]; | |
2849 | text_addr = strtoul (p, (char **) &p1, 16); | |
2850 | if (p1 == p || *p1 != ';') | |
2851 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2852 | p = p1 + 1; | |
2853 | data_addr = strtoul (p, (char **) &p1, 16); | |
2854 | if (p1 == p || *p1 != ';') | |
2855 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2856 | p = p1 + 1; | |
2857 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2858 | if (p1 == p) |
43ff13b4 JM |
2859 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2860 | ||
2861 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2862 | &text_off, &data_off, &bss_off) | |
2863 | == 0) | |
c5aa993b | 2864 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2865 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2866 | ||
2867 | goto got_status; | |
2868 | } | |
2869 | case 'W': /* Target exited */ | |
2870 | { | |
2871 | /* The remote process exited. */ | |
2872 | status->kind = TARGET_WAITKIND_EXITED; | |
2873 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2874 | goto got_status; | |
2875 | } | |
2876 | case 'X': | |
2877 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2878 | status->value.sig = (enum target_signal) | |
2879 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2880 | kill_kludge = 1; | |
2881 | ||
2882 | goto got_status; | |
2883 | case 'O': /* Console output */ | |
2884 | remote_console_output (buf + 1); | |
2885 | continue; | |
2886 | case '\0': | |
2887 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2888 | { | |
2889 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2890 | the remote system doesn't support it. */ |
43ff13b4 JM |
2891 | target_terminal_ours_for_output (); |
2892 | printf_filtered | |
2893 | ("Can't send signals to this remote system. %s not sent.\n", | |
2894 | target_signal_to_name (last_sent_signal)); | |
2895 | last_sent_signal = TARGET_SIGNAL_0; | |
2896 | target_terminal_inferior (); | |
2897 | ||
2898 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2899 | putpkt ((char *) buf); | |
2900 | continue; | |
2901 | } | |
2902 | /* else fallthrough */ | |
2903 | default: | |
2904 | warning ("Invalid remote reply: %s", buf); | |
2905 | continue; | |
2906 | } | |
2907 | } | |
c5aa993b | 2908 | got_status: |
43ff13b4 JM |
2909 | if (thread_num != -1) |
2910 | { | |
2911 | return thread_num; | |
2912 | } | |
2913 | return inferior_pid; | |
2914 | } | |
2915 | ||
c906108c SS |
2916 | /* Number of bytes of registers this stub implements. */ |
2917 | ||
2918 | static int register_bytes_found; | |
2919 | ||
2920 | /* Read the remote registers into the block REGS. */ | |
2921 | /* Currently we just read all the registers, so we don't use regno. */ | |
2922 | ||
2923 | /* ARGSUSED */ | |
2924 | static void | |
2925 | remote_fetch_registers (regno) | |
2926 | int regno; | |
2927 | { | |
085dd6e6 | 2928 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2929 | int i; |
2930 | char *p; | |
2931 | char regs[REGISTER_BYTES]; | |
2932 | ||
2933 | set_thread (inferior_pid, 1); | |
2934 | ||
2935 | sprintf (buf, "g"); | |
2936 | remote_send (buf); | |
2937 | ||
11cf8741 JM |
2938 | /* Save the size of the packet sent to us by the target. Its used |
2939 | as a heuristic when determining the max size of packets that the | |
2940 | target can safely receive. */ | |
2941 | if (actual_register_packet_size == 0) | |
2942 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
2943 | |
2944 | /* Unimplemented registers read as all bits zero. */ | |
2945 | memset (regs, 0, REGISTER_BYTES); | |
2946 | ||
2947 | /* We can get out of synch in various cases. If the first character | |
2948 | in the buffer is not a hex character, assume that has happened | |
2949 | and try to fetch another packet to read. */ | |
2950 | while ((buf[0] < '0' || buf[0] > '9') | |
2951 | && (buf[0] < 'a' || buf[0] > 'f') | |
2952 | && buf[0] != 'x') /* New: unavailable register value */ | |
2953 | { | |
2954 | if (remote_debug) | |
0f71a2f6 JM |
2955 | fprintf_unfiltered (gdb_stdlog, |
2956 | "Bad register packet; fetching a new packet\n"); | |
c906108c SS |
2957 | getpkt (buf, 0); |
2958 | } | |
2959 | ||
2960 | /* Reply describes registers byte by byte, each byte encoded as two | |
2961 | hex characters. Suck them all up, then supply them to the | |
2962 | register cacheing/storage mechanism. */ | |
2963 | ||
2964 | p = buf; | |
2965 | for (i = 0; i < REGISTER_BYTES; i++) | |
2966 | { | |
2967 | if (p[0] == 0) | |
2968 | break; | |
2969 | if (p[1] == 0) | |
2970 | { | |
2971 | warning ("Remote reply is of odd length: %s", buf); | |
2972 | /* Don't change register_bytes_found in this case, and don't | |
2973 | print a second warning. */ | |
2974 | goto supply_them; | |
2975 | } | |
2976 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 2977 | regs[i] = 0; /* 'x' */ |
c906108c SS |
2978 | else |
2979 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2980 | p += 2; | |
2981 | } | |
2982 | ||
2983 | if (i != register_bytes_found) | |
2984 | { | |
2985 | register_bytes_found = i; | |
2986 | #ifdef REGISTER_BYTES_OK | |
2987 | if (!REGISTER_BYTES_OK (i)) | |
2988 | warning ("Remote reply is too short: %s", buf); | |
2989 | #endif | |
2990 | } | |
c5aa993b JM |
2991 | |
2992 | supply_them: | |
c906108c | 2993 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
2994 | { |
2995 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
2996 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
2997 | register_valid[i] = -1; /* register value not available */ | |
2998 | } | |
c906108c SS |
2999 | } |
3000 | ||
3001 | /* Prepare to store registers. Since we may send them all (using a | |
3002 | 'G' request), we have to read out the ones we don't want to change | |
3003 | first. */ | |
3004 | ||
c5aa993b | 3005 | static void |
c906108c SS |
3006 | remote_prepare_to_store () |
3007 | { | |
3008 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3009 | switch (remote_protocol_P.support) |
3010 | { | |
3011 | case PACKET_DISABLE: | |
3012 | case PACKET_SUPPORT_UNKNOWN: | |
3013 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3014 | break; | |
3015 | case PACKET_ENABLE: | |
3016 | break; | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3021 | packet was not recognized. */ | |
3022 | ||
3023 | static int | |
3024 | store_register_using_P (regno) | |
3025 | int regno; | |
3026 | { | |
3027 | /* Try storing a single register. */ | |
3028 | char *buf = alloca (PBUFSIZ); | |
3029 | char *regp; | |
3030 | char *p; | |
3031 | int i; | |
3032 | ||
3033 | sprintf (buf, "P%x=", regno); | |
3034 | p = buf + strlen (buf); | |
3035 | regp = ®isters[REGISTER_BYTE (regno)]; | |
3036 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) | |
3037 | { | |
3038 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
3039 | *p++ = tohex (regp[i] & 0xf); | |
3040 | } | |
3041 | *p = '\0'; | |
3042 | remote_send (buf); | |
3043 | ||
3044 | return buf[0] != '\0'; | |
c906108c SS |
3045 | } |
3046 | ||
5a2468f5 | 3047 | |
c906108c SS |
3048 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
3049 | of REGISTERS. FIXME: ignores errors. */ | |
3050 | ||
3051 | static void | |
3052 | remote_store_registers (regno) | |
3053 | int regno; | |
3054 | { | |
085dd6e6 | 3055 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3056 | int i; |
3057 | char *p; | |
3058 | ||
3059 | set_thread (inferior_pid, 1); | |
3060 | ||
5a2468f5 | 3061 | if (regno >= 0) |
c906108c | 3062 | { |
5a2468f5 | 3063 | switch (remote_protocol_P.support) |
c906108c | 3064 | { |
5a2468f5 JM |
3065 | case PACKET_DISABLE: |
3066 | break; | |
3067 | case PACKET_ENABLE: | |
3068 | if (store_register_using_P (regno)) | |
3069 | return; | |
3070 | else | |
3071 | error ("Protocol error: P packet not recognized by stub"); | |
3072 | case PACKET_SUPPORT_UNKNOWN: | |
3073 | if (store_register_using_P (regno)) | |
3074 | { | |
3075 | /* The stub recognized the 'P' packet. Remember this. */ | |
3076 | remote_protocol_P.support = PACKET_ENABLE; | |
3077 | return; | |
3078 | } | |
3079 | else | |
3080 | { | |
3081 | /* The stub does not support the 'P' packet. Use 'G' | |
3082 | instead, and don't try using 'P' in the future (it | |
3083 | will just waste our time). */ | |
3084 | remote_protocol_P.support = PACKET_DISABLE; | |
3085 | break; | |
3086 | } | |
c906108c | 3087 | } |
c906108c SS |
3088 | } |
3089 | ||
3090 | buf[0] = 'G'; | |
3091 | ||
3092 | /* Command describes registers byte by byte, | |
3093 | each byte encoded as two hex characters. */ | |
3094 | ||
3095 | p = buf + 1; | |
3096 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3097 | for (i = 0; i < register_bytes_found; i++) | |
3098 | { | |
3099 | *p++ = tohex ((registers[i] >> 4) & 0xf); | |
3100 | *p++ = tohex (registers[i] & 0xf); | |
3101 | } | |
3102 | *p = '\0'; | |
3103 | ||
3104 | remote_send (buf); | |
3105 | } | |
3106 | ||
3107 | /* Use of the data cache *used* to be disabled because it loses for looking | |
3108 | at and changing hardware I/O ports and the like. Accepting `volatile' | |
3109 | would perhaps be one way to fix it. Another idea would be to use the | |
3110 | executable file for the text segment (for all SEC_CODE sections? | |
3111 | For all SEC_READONLY sections?). This has problems if you want to | |
3112 | actually see what the memory contains (e.g. self-modifying code, | |
3113 | clobbered memory, user downloaded the wrong thing). | |
3114 | ||
3115 | Because it speeds so much up, it's now enabled, if you're playing | |
3116 | with registers you turn it of (set remotecache 0). */ | |
3117 | ||
3118 | /* Read a word from remote address ADDR and return it. | |
3119 | This goes through the data cache. */ | |
3120 | ||
c5aa993b | 3121 | #if 0 /* unused? */ |
c906108c SS |
3122 | static int |
3123 | remote_fetch_word (addr) | |
3124 | CORE_ADDR addr; | |
3125 | { | |
3126 | return dcache_fetch (remote_dcache, addr); | |
3127 | } | |
3128 | ||
3129 | /* Write a word WORD into remote address ADDR. | |
3130 | This goes through the data cache. */ | |
3131 | ||
3132 | static void | |
3133 | remote_store_word (addr, word) | |
3134 | CORE_ADDR addr; | |
3135 | int word; | |
3136 | { | |
3137 | dcache_poke (remote_dcache, addr, word); | |
3138 | } | |
c5aa993b | 3139 | #endif /* 0 (unused?) */ |
c906108c SS |
3140 | \f |
3141 | ||
c5aa993b | 3142 | |
c906108c SS |
3143 | /* Return the number of hex digits in num. */ |
3144 | ||
3145 | static int | |
3146 | hexnumlen (num) | |
3147 | ULONGEST num; | |
3148 | { | |
3149 | int i; | |
3150 | ||
3151 | for (i = 0; num != 0; i++) | |
3152 | num >>= 4; | |
3153 | ||
3154 | return max (i, 1); | |
3155 | } | |
3156 | ||
2df3850c | 3157 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3158 | |
3159 | static int | |
3160 | hexnumstr (buf, num) | |
3161 | char *buf; | |
3162 | ULONGEST num; | |
3163 | { | |
c906108c | 3164 | int len = hexnumlen (num); |
2df3850c JM |
3165 | return hexnumnstr (buf, num, len); |
3166 | } | |
3167 | ||
c906108c | 3168 | |
2df3850c | 3169 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3170 | |
2df3850c JM |
3171 | static int |
3172 | hexnumnstr (buf, num, width) | |
3173 | char *buf; | |
3174 | ULONGEST num; | |
3175 | int width; | |
3176 | { | |
3177 | int i; | |
3178 | ||
3179 | buf[width] = '\0'; | |
3180 | ||
3181 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3182 | { |
c5aa993b | 3183 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3184 | num >>= 4; |
3185 | } | |
3186 | ||
2df3850c | 3187 | return width; |
c906108c SS |
3188 | } |
3189 | ||
3190 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3191 | ||
3192 | static CORE_ADDR | |
3193 | remote_address_masked (addr) | |
3194 | CORE_ADDR addr; | |
3195 | { | |
3196 | if (remote_address_size > 0 | |
3197 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3198 | { | |
3199 | /* Only create a mask when that mask can safely be constructed | |
3200 | in a ULONGEST variable. */ | |
3201 | ULONGEST mask = 1; | |
3202 | mask = (mask << remote_address_size) - 1; | |
3203 | addr &= mask; | |
3204 | } | |
3205 | return addr; | |
3206 | } | |
3207 | ||
3208 | /* Determine whether the remote target supports binary downloading. | |
3209 | This is accomplished by sending a no-op memory write of zero length | |
3210 | to the target at the specified address. It does not suffice to send | |
3211 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3212 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3213 | ||
96baa820 JM |
3214 | NOTE: This can still lose if the serial line is not eight-bit |
3215 | clean. In cases like this, the user should clear "remote | |
3216 | X-packet". */ | |
3217 | ||
c906108c SS |
3218 | static void |
3219 | check_binary_download (addr) | |
3220 | CORE_ADDR addr; | |
3221 | { | |
96baa820 | 3222 | switch (remote_protocol_binary_download.support) |
c906108c | 3223 | { |
96baa820 JM |
3224 | case PACKET_DISABLE: |
3225 | break; | |
3226 | case PACKET_ENABLE: | |
3227 | break; | |
3228 | case PACKET_SUPPORT_UNKNOWN: | |
3229 | { | |
3230 | char *buf = alloca (PBUFSIZ); | |
3231 | char *p; | |
3232 | ||
3233 | p = buf; | |
3234 | *p++ = 'X'; | |
3235 | p += hexnumstr (p, (ULONGEST) addr); | |
3236 | *p++ = ','; | |
3237 | p += hexnumstr (p, (ULONGEST) 0); | |
3238 | *p++ = ':'; | |
3239 | *p = '\0'; | |
3240 | ||
3241 | putpkt_binary (buf, (int) (p - buf)); | |
3242 | getpkt (buf, 0); | |
c906108c | 3243 | |
96baa820 JM |
3244 | if (buf[0] == '\0') |
3245 | { | |
3246 | if (remote_debug) | |
3247 | fprintf_unfiltered (gdb_stdlog, | |
3248 | "binary downloading NOT suppported by target\n"); | |
3249 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3250 | } | |
3251 | else | |
3252 | { | |
3253 | if (remote_debug) | |
3254 | fprintf_unfiltered (gdb_stdlog, | |
3255 | "binary downloading suppported by target\n"); | |
3256 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3257 | } | |
3258 | break; | |
3259 | } | |
c906108c SS |
3260 | } |
3261 | } | |
3262 | ||
3263 | /* Write memory data directly to the remote machine. | |
3264 | This does not inform the data cache; the data cache uses this. | |
3265 | MEMADDR is the address in the remote memory space. | |
3266 | MYADDR is the address of the buffer in our space. | |
3267 | LEN is the number of bytes. | |
3268 | ||
917317f4 JM |
3269 | Returns number of bytes transferred, or 0 (setting errno) for |
3270 | error. Only transfer a single packet. */ | |
c906108c SS |
3271 | |
3272 | static int | |
917317f4 | 3273 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3274 | { |
917317f4 | 3275 | unsigned char *buf; |
c906108c | 3276 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3277 | unsigned char *p; |
3278 | unsigned char *plen; | |
3279 | int plenlen; | |
3280 | int todo; | |
3281 | int nr_bytes; | |
c906108c SS |
3282 | |
3283 | /* Verify that the target can support a binary download */ | |
3284 | check_binary_download (memaddr); | |
3285 | ||
917317f4 | 3286 | /* Determine the max packet size. */ |
11cf8741 | 3287 | max_buf_size = get_memory_write_packet_size (); |
917317f4 | 3288 | buf = alloca (max_buf_size + 1); |
c906108c | 3289 | |
7a292a7a | 3290 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3291 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3292 | ||
917317f4 JM |
3293 | /* construct "M"<memaddr>","<len>":" */ |
3294 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3295 | p = buf; | |
3296 | ||
3297 | /* Append [XM]. Compute a best guess of the number of bytes | |
3298 | actually transfered. */ | |
3299 | switch (remote_protocol_binary_download.support) | |
c906108c | 3300 | { |
917317f4 JM |
3301 | case PACKET_ENABLE: |
3302 | *p++ = 'X'; | |
3303 | /* Best guess at number of bytes that will fit. */ | |
3304 | todo = min (len, max_buf_size); | |
3305 | break; | |
3306 | case PACKET_DISABLE: | |
3307 | *p++ = 'M'; | |
3308 | /* num bytes that will fit */ | |
3309 | todo = min (len, max_buf_size / 2); | |
3310 | break; | |
3311 | case PACKET_SUPPORT_UNKNOWN: | |
3312 | internal_error ("remote_write_bytes: bad switch"); | |
3313 | } | |
3314 | ||
3315 | /* Append <memaddr> */ | |
3316 | memaddr = remote_address_masked (memaddr); | |
3317 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3318 | *p++ = ','; | |
3319 | ||
3320 | /* Append <len>. Retain the location/size of <len>. It may | |
3321 | need to be adjusted once the packet body has been created. */ | |
3322 | plen = p; | |
3323 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3324 | p += plenlen; | |
3325 | *p++ = ':'; | |
3326 | *p = '\0'; | |
3327 | ||
3328 | /* Append the packet body. */ | |
3329 | switch (remote_protocol_binary_download.support) | |
3330 | { | |
3331 | case PACKET_ENABLE: | |
3332 | /* Binary mode. Send target system values byte by byte, in | |
3333 | increasing byte addresses. Only escape certain critical | |
3334 | characters. */ | |
3335 | for (nr_bytes = 0; | |
3336 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3337 | nr_bytes++) | |
c906108c | 3338 | { |
917317f4 JM |
3339 | switch (myaddr[nr_bytes] & 0xff) |
3340 | { | |
3341 | case '$': | |
3342 | case '#': | |
3343 | case 0x7d: | |
3344 | /* These must be escaped */ | |
3345 | *p++ = 0x7d; | |
3346 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3347 | break; | |
3348 | default: | |
3349 | *p++ = myaddr[nr_bytes] & 0xff; | |
3350 | break; | |
3351 | } | |
c906108c | 3352 | } |
917317f4 | 3353 | if (nr_bytes < todo) |
c906108c | 3354 | { |
917317f4 JM |
3355 | /* Escape chars have filled up the buffer prematurely, |
3356 | and we have actually sent fewer bytes than planned. | |
3357 | Fix-up the length field of the packet. Use the same | |
3358 | number of characters as before. */ | |
3359 | ||
3360 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3361 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3362 | } |
917317f4 JM |
3363 | break; |
3364 | case PACKET_DISABLE: | |
3365 | /* Normal mode: Send target system values byte by byte, in | |
3366 | increasing byte addresses. Each byte is encoded as a two hex | |
3367 | value. */ | |
3368 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3369 | { |
917317f4 JM |
3370 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3371 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3372 | } |
917317f4 JM |
3373 | *p = '\0'; |
3374 | break; | |
3375 | case PACKET_SUPPORT_UNKNOWN: | |
3376 | internal_error ("remote_write_bytes: bad switch"); | |
c906108c | 3377 | } |
917317f4 JM |
3378 | |
3379 | putpkt_binary (buf, (int) (p - buf)); | |
3380 | getpkt (buf, 0); | |
3381 | ||
3382 | if (buf[0] == 'E') | |
3383 | { | |
3384 | /* There is no correspondance between what the remote protocol | |
3385 | uses for errors and errno codes. We would like a cleaner way | |
3386 | of representing errors (big enough to include errno codes, | |
3387 | bfd_error codes, and others). But for now just return EIO. */ | |
3388 | errno = EIO; | |
3389 | return 0; | |
3390 | } | |
3391 | ||
3392 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3393 | bytes than we'd planned. */ | |
3394 | return nr_bytes; | |
c906108c SS |
3395 | } |
3396 | ||
3397 | /* Read memory data directly from the remote machine. | |
3398 | This does not use the data cache; the data cache uses this. | |
3399 | MEMADDR is the address in the remote memory space. | |
3400 | MYADDR is the address of the buffer in our space. | |
3401 | LEN is the number of bytes. | |
3402 | ||
3403 | Returns number of bytes transferred, or 0 for error. */ | |
3404 | ||
917317f4 JM |
3405 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3406 | remote targets) shouldn't attempt to read the entire buffer. | |
3407 | Instead it should read a single packet worth of data and then | |
3408 | return the byte size of that packet to the caller. The caller (its | |
3409 | caller and its callers caller ;-) already contains code for | |
3410 | handling partial reads. */ | |
3411 | ||
c906108c SS |
3412 | static int |
3413 | remote_read_bytes (memaddr, myaddr, len) | |
3414 | CORE_ADDR memaddr; | |
3415 | char *myaddr; | |
3416 | int len; | |
3417 | { | |
11cf8741 | 3418 | char *buf; |
c906108c SS |
3419 | int max_buf_size; /* Max size of packet output buffer */ |
3420 | int origlen; | |
3421 | ||
11cf8741 JM |
3422 | /* Create a buffer big enough for this packet. */ |
3423 | max_buf_size = get_memory_read_packet_size (); | |
3424 | buf = alloca (max_buf_size); | |
c906108c SS |
3425 | |
3426 | origlen = len; | |
3427 | while (len > 0) | |
3428 | { | |
c906108c SS |
3429 | char *p; |
3430 | int todo; | |
3431 | int i; | |
3432 | ||
c5aa993b | 3433 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3434 | |
3435 | /* construct "m"<memaddr>","<len>" */ | |
3436 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3437 | memaddr = remote_address_masked (memaddr); | |
3438 | p = buf; | |
3439 | *p++ = 'm'; | |
3440 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3441 | *p++ = ','; | |
3442 | p += hexnumstr (p, (ULONGEST) todo); | |
3443 | *p = '\0'; | |
3444 | ||
3445 | putpkt (buf); | |
3446 | getpkt (buf, 0); | |
3447 | ||
3448 | if (buf[0] == 'E') | |
3449 | { | |
3450 | /* There is no correspondance between what the remote protocol uses | |
3451 | for errors and errno codes. We would like a cleaner way of | |
3452 | representing errors (big enough to include errno codes, bfd_error | |
3453 | codes, and others). But for now just return EIO. */ | |
3454 | errno = EIO; | |
3455 | return 0; | |
3456 | } | |
3457 | ||
c5aa993b JM |
3458 | /* Reply describes memory byte by byte, |
3459 | each byte encoded as two hex characters. */ | |
c906108c SS |
3460 | |
3461 | p = buf; | |
3462 | for (i = 0; i < todo; i++) | |
3463 | { | |
3464 | if (p[0] == 0 || p[1] == 0) | |
3465 | /* Reply is short. This means that we were able to read | |
3466 | only part of what we wanted to. */ | |
3467 | return i + (origlen - len); | |
3468 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3469 | p += 2; | |
3470 | } | |
3471 | myaddr += todo; | |
3472 | memaddr += todo; | |
3473 | len -= todo; | |
3474 | } | |
3475 | return origlen; | |
3476 | } | |
3477 | \f | |
3478 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3479 | transferring to or from debugger address BUFFER. Write to inferior if |
3480 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
3481 | for error. */ | |
3482 | ||
3483 | #ifndef REMOTE_TRANSLATE_XFER_ADDRESS | |
3484 | #define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \ | |
3485 | (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN)) | |
3486 | #endif | |
c906108c SS |
3487 | |
3488 | /* ARGSUSED */ | |
3489 | static int | |
392a587b JM |
3490 | remote_xfer_memory (mem_addr, buffer, mem_len, should_write, target) |
3491 | CORE_ADDR mem_addr; | |
3492 | char *buffer; | |
3493 | int mem_len; | |
c906108c | 3494 | int should_write; |
c5aa993b | 3495 | struct target_ops *target; /* ignored */ |
c906108c | 3496 | { |
392a587b JM |
3497 | CORE_ADDR targ_addr; |
3498 | int targ_len; | |
3499 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); | |
3500 | if (targ_len <= 0) | |
c906108c | 3501 | return 0; |
c906108c | 3502 | |
392a587b JM |
3503 | return dcache_xfer_memory (remote_dcache, targ_addr, buffer, |
3504 | targ_len, should_write); | |
c906108c SS |
3505 | } |
3506 | ||
c5aa993b | 3507 | |
c906108c SS |
3508 | #if 0 |
3509 | /* Enable after 4.12. */ | |
3510 | ||
3511 | void | |
3512 | remote_search (len, data, mask, startaddr, increment, lorange, hirange | |
3513 | addr_found, data_found) | |
3514 | int len; | |
3515 | char *data; | |
3516 | char *mask; | |
3517 | CORE_ADDR startaddr; | |
3518 | int increment; | |
3519 | CORE_ADDR lorange; | |
3520 | CORE_ADDR hirange; | |
3521 | CORE_ADDR *addr_found; | |
3522 | char *data_found; | |
3523 | { | |
3524 | if (increment == -4 && len == 4) | |
3525 | { | |
3526 | long mask_long, data_long; | |
3527 | long data_found_long; | |
3528 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3529 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3530 | long returned_long[2]; |
3531 | char *p; | |
3532 | ||
3533 | mask_long = extract_unsigned_integer (mask, len); | |
3534 | data_long = extract_unsigned_integer (data, len); | |
3535 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3536 | putpkt (buf); | |
3537 | getpkt (buf, 0); | |
3538 | if (buf[0] == '\0') | |
3539 | { | |
3540 | /* The stub doesn't support the 't' request. We might want to | |
3541 | remember this fact, but on the other hand the stub could be | |
3542 | switched on us. Maybe we should remember it only until | |
3543 | the next "target remote". */ | |
3544 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3545 | hirange, addr_found, data_found); | |
3546 | return; | |
3547 | } | |
3548 | ||
3549 | if (buf[0] == 'E') | |
3550 | /* There is no correspondance between what the remote protocol uses | |
3551 | for errors and errno codes. We would like a cleaner way of | |
3552 | representing errors (big enough to include errno codes, bfd_error | |
3553 | codes, and others). But for now just use EIO. */ | |
3554 | memory_error (EIO, startaddr); | |
3555 | p = buf; | |
3556 | addr_we_found = 0; | |
3557 | while (*p != '\0' && *p != ',') | |
3558 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3559 | if (*p == '\0') | |
3560 | error ("Protocol error: short return for search"); | |
3561 | ||
3562 | data_found_long = 0; | |
3563 | while (*p != '\0' && *p != ',') | |
3564 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3565 | /* Ignore anything after this comma, for future extensions. */ | |
3566 | ||
3567 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3568 | { | |
3569 | *addr_found = 0; | |
3570 | return; | |
3571 | } | |
3572 | ||
3573 | *addr_found = addr_we_found; | |
3574 | *data_found = store_unsigned_integer (data_we_found, len); | |
3575 | return; | |
3576 | } | |
3577 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3578 | hirange, addr_found, data_found); | |
3579 | } | |
3580 | #endif /* 0 */ | |
3581 | \f | |
3582 | static void | |
3583 | remote_files_info (ignore) | |
3584 | struct target_ops *ignore; | |
3585 | { | |
3586 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3587 | } | |
3588 | \f | |
3589 | /* Stuff for dealing with the packets which are part of this protocol. | |
3590 | See comment at top of file for details. */ | |
3591 | ||
3592 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3593 | ||
3594 | static int | |
3595 | readchar (timeout) | |
3596 | int timeout; | |
3597 | { | |
3598 | int ch; | |
3599 | ||
3600 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3601 | ||
2acceee2 JM |
3602 | if (ch >= 0) |
3603 | return (ch & 0x7f); | |
3604 | ||
3605 | switch ((enum serial_rc) ch) | |
c906108c SS |
3606 | { |
3607 | case SERIAL_EOF: | |
2acceee2 | 3608 | target_mourn_inferior (); |
c906108c | 3609 | error ("Remote connection closed"); |
2acceee2 | 3610 | /* no return */ |
c906108c SS |
3611 | case SERIAL_ERROR: |
3612 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3613 | /* no return */ |
c906108c | 3614 | case SERIAL_TIMEOUT: |
2acceee2 | 3615 | break; |
c906108c | 3616 | } |
2acceee2 | 3617 | return ch; |
c906108c SS |
3618 | } |
3619 | ||
3620 | /* Send the command in BUF to the remote machine, and read the reply | |
3621 | into BUF. Report an error if we get an error reply. */ | |
3622 | ||
3623 | static void | |
3624 | remote_send (buf) | |
3625 | char *buf; | |
3626 | { | |
3627 | putpkt (buf); | |
3628 | getpkt (buf, 0); | |
3629 | ||
3630 | if (buf[0] == 'E') | |
3631 | error ("Remote failure reply: %s", buf); | |
3632 | } | |
3633 | ||
3634 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3635 | string notation. */ | |
3636 | ||
3637 | static void | |
3638 | print_packet (buf) | |
3639 | char *buf; | |
3640 | { | |
3641 | puts_filtered ("\""); | |
43e526b9 | 3642 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3643 | puts_filtered ("\""); |
3644 | } | |
3645 | ||
3646 | int | |
3647 | putpkt (buf) | |
3648 | char *buf; | |
3649 | { | |
3650 | return putpkt_binary (buf, strlen (buf)); | |
3651 | } | |
3652 | ||
3653 | /* Send a packet to the remote machine, with error checking. The data | |
3654 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3655 | to account for the $, # and checksum, and for a possible /0 if we are | |
3656 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3657 | ||
3658 | static int | |
3659 | putpkt_binary (buf, cnt) | |
3660 | char *buf; | |
3661 | int cnt; | |
3662 | { | |
3663 | int i; | |
3664 | unsigned char csum = 0; | |
11cf8741 | 3665 | char *buf2 = alloca (cnt + 6); |
085dd6e6 JM |
3666 | char *junkbuf = alloca (PBUFSIZ); |
3667 | ||
c906108c SS |
3668 | int ch; |
3669 | int tcount = 0; | |
3670 | char *p; | |
3671 | ||
3672 | /* Copy the packet into buffer BUF2, encapsulating it | |
3673 | and giving it a checksum. */ | |
3674 | ||
c906108c SS |
3675 | p = buf2; |
3676 | *p++ = '$'; | |
3677 | ||
3678 | for (i = 0; i < cnt; i++) | |
3679 | { | |
3680 | csum += buf[i]; | |
3681 | *p++ = buf[i]; | |
3682 | } | |
3683 | *p++ = '#'; | |
3684 | *p++ = tohex ((csum >> 4) & 0xf); | |
3685 | *p++ = tohex (csum & 0xf); | |
3686 | ||
3687 | /* Send it over and over until we get a positive ack. */ | |
3688 | ||
3689 | while (1) | |
3690 | { | |
3691 | int started_error_output = 0; | |
3692 | ||
3693 | if (remote_debug) | |
3694 | { | |
3695 | *p = '\0'; | |
43e526b9 JM |
3696 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3697 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3698 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3699 | gdb_flush (gdb_stdlog); |
c906108c SS |
3700 | } |
3701 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3702 | perror_with_name ("putpkt: write failed"); | |
3703 | ||
3704 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3705 | while (1) | |
3706 | { | |
3707 | ch = readchar (remote_timeout); | |
3708 | ||
c5aa993b | 3709 | if (remote_debug) |
c906108c SS |
3710 | { |
3711 | switch (ch) | |
3712 | { | |
3713 | case '+': | |
3714 | case SERIAL_TIMEOUT: | |
3715 | case '$': | |
3716 | if (started_error_output) | |
3717 | { | |
3718 | putchar_unfiltered ('\n'); | |
3719 | started_error_output = 0; | |
3720 | } | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | switch (ch) | |
3725 | { | |
3726 | case '+': | |
3727 | if (remote_debug) | |
0f71a2f6 | 3728 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c SS |
3729 | return 1; |
3730 | case SERIAL_TIMEOUT: | |
c5aa993b | 3731 | tcount++; |
c906108c SS |
3732 | if (tcount > 3) |
3733 | return 0; | |
3734 | break; /* Retransmit buffer */ | |
3735 | case '$': | |
3736 | { | |
c5aa993b JM |
3737 | /* It's probably an old response, and we're out of sync. |
3738 | Just gobble up the packet and ignore it. */ | |
c906108c | 3739 | getpkt (junkbuf, 0); |
c5aa993b | 3740 | continue; /* Now, go look for + */ |
c906108c SS |
3741 | } |
3742 | default: | |
3743 | if (remote_debug) | |
3744 | { | |
3745 | if (!started_error_output) | |
3746 | { | |
3747 | started_error_output = 1; | |
0f71a2f6 | 3748 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3749 | } |
0f71a2f6 | 3750 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3751 | } |
3752 | continue; | |
3753 | } | |
3754 | break; /* Here to retransmit */ | |
3755 | } | |
3756 | ||
3757 | #if 0 | |
3758 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3759 | able to get out next time we call QUIT, without anything as |
3760 | violent as interrupt_query. If we want to provide a way out of | |
3761 | here without getting to the next QUIT, it should be based on | |
3762 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3763 | if (quit_flag) |
3764 | { | |
3765 | quit_flag = 0; | |
3766 | interrupt_query (); | |
3767 | } | |
3768 | #endif | |
3769 | } | |
3770 | } | |
3771 | ||
0f71a2f6 JM |
3772 | static int remote_cisco_mode; |
3773 | ||
c906108c SS |
3774 | /* Come here after finding the start of the frame. Collect the rest |
3775 | into BUF, verifying the checksum, length, and handling run-length | |
3776 | compression. Returns 0 on any error, 1 on success. */ | |
3777 | ||
3778 | static int | |
3779 | read_frame (buf) | |
3780 | char *buf; | |
3781 | { | |
3782 | unsigned char csum; | |
3783 | char *bp; | |
3784 | int c; | |
3785 | ||
3786 | csum = 0; | |
3787 | bp = buf; | |
3788 | ||
3789 | while (1) | |
3790 | { | |
3791 | c = readchar (remote_timeout); | |
3792 | ||
3793 | switch (c) | |
3794 | { | |
3795 | case SERIAL_TIMEOUT: | |
3796 | if (remote_debug) | |
0f71a2f6 | 3797 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c906108c SS |
3798 | return 0; |
3799 | case '$': | |
3800 | if (remote_debug) | |
0f71a2f6 JM |
3801 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3802 | gdb_stdlog); | |
c906108c SS |
3803 | return 0; /* Start a new packet, count retries */ |
3804 | case '#': | |
3805 | { | |
3806 | unsigned char pktcsum; | |
3807 | ||
3808 | *bp = '\000'; | |
3809 | ||
3810 | pktcsum = fromhex (readchar (remote_timeout)) << 4; | |
3811 | pktcsum |= fromhex (readchar (remote_timeout)); | |
3812 | ||
3813 | if (csum == pktcsum) | |
c2c6d25f | 3814 | return 1; |
c906108c | 3815 | |
c5aa993b | 3816 | if (remote_debug) |
c906108c | 3817 | { |
0f71a2f6 | 3818 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3819 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3820 | pktcsum, csum); |
3821 | fputs_filtered (buf, gdb_stdlog); | |
3822 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c SS |
3823 | } |
3824 | return 0; | |
3825 | } | |
3826 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
3827 | { |
3828 | int repeat; | |
3829 | csum += c; | |
c906108c | 3830 | |
c2c6d25f JM |
3831 | if (remote_cisco_mode == 0) |
3832 | { | |
3833 | c = readchar (remote_timeout); | |
3834 | csum += c; | |
3835 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
3836 | } | |
3837 | else | |
3838 | { | |
3839 | /* Cisco's run-length encoding variant uses two | |
3840 | hex chars to represent the repeat count. */ | |
3841 | ||
3842 | c = readchar (remote_timeout); | |
3843 | csum += c; | |
3844 | repeat = fromhex (c) << 4; | |
3845 | c = readchar (remote_timeout); | |
3846 | csum += c; | |
3847 | repeat += fromhex (c); | |
3848 | } | |
c906108c | 3849 | |
c2c6d25f JM |
3850 | if (repeat > 0 && repeat <= 255 |
3851 | && bp + repeat - 1 < buf + PBUFSIZ - 1) | |
3852 | { | |
3853 | memset (bp, *(bp - 1), repeat); | |
3854 | bp += c; | |
3855 | continue; | |
3856 | } | |
3857 | ||
3858 | *bp = '\0'; | |
3859 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); | |
3860 | puts_filtered (buf); | |
3861 | puts_filtered ("\n"); | |
3862 | return 0; | |
3863 | } | |
c906108c SS |
3864 | default: |
3865 | if (bp < buf + PBUFSIZ - 1) | |
3866 | { | |
3867 | *bp++ = c; | |
3868 | csum += c; | |
3869 | continue; | |
3870 | } | |
3871 | ||
3872 | *bp = '\0'; | |
3873 | puts_filtered ("Remote packet too long: "); | |
3874 | puts_filtered (buf); | |
3875 | puts_filtered ("\n"); | |
3876 | ||
3877 | return 0; | |
3878 | } | |
3879 | } | |
3880 | } | |
3881 | ||
3882 | /* Read a packet from the remote machine, with error checking, and | |
3883 | store it in BUF. BUF is expected to be of size PBUFSIZ. If | |
3884 | FOREVER, wait forever rather than timing out; this is used while | |
3885 | the target is executing user code. */ | |
3886 | ||
3887 | void | |
3888 | getpkt (buf, forever) | |
3889 | char *buf; | |
3890 | int forever; | |
3891 | { | |
3892 | int c; | |
3893 | int tries; | |
3894 | int timeout; | |
3895 | int val; | |
3896 | ||
c5aa993b | 3897 | strcpy (buf, "timeout"); |
c906108c SS |
3898 | |
3899 | if (forever) | |
3900 | { | |
c906108c | 3901 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
3902 | } |
3903 | ||
3904 | else | |
3905 | timeout = remote_timeout; | |
3906 | ||
3907 | #define MAX_TRIES 3 | |
3908 | ||
3909 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
3910 | { | |
3911 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
3912 | continuously, but if it pauses, we'll get a zero from readchar |
3913 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
3914 | |
3915 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
3916 | After that, we expect characters to arrive at a brisk pace. They |
3917 | should show up within remote_timeout intervals. */ | |
c906108c SS |
3918 | |
3919 | do | |
3920 | { | |
3921 | c = readchar (timeout); | |
3922 | ||
3923 | if (c == SERIAL_TIMEOUT) | |
3924 | { | |
2acceee2 | 3925 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 3926 | { |
2acceee2 | 3927 | QUIT; |
c906108c SS |
3928 | target_mourn_inferior (); |
3929 | error ("Watchdog has expired. Target detached.\n"); | |
3930 | } | |
c906108c | 3931 | if (remote_debug) |
0f71a2f6 | 3932 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
3933 | goto retry; |
3934 | } | |
3935 | } | |
3936 | while (c != '$'); | |
3937 | ||
3938 | /* We've found the start of a packet, now collect the data. */ | |
3939 | ||
3940 | val = read_frame (buf); | |
3941 | ||
3942 | if (val == 1) | |
3943 | { | |
3944 | if (remote_debug) | |
43e526b9 JM |
3945 | { |
3946 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
3947 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
3948 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3949 | } | |
c906108c SS |
3950 | SERIAL_WRITE (remote_desc, "+", 1); |
3951 | return; | |
3952 | } | |
3953 | ||
3954 | /* Try the whole thing again. */ | |
3955 | retry: | |
3956 | SERIAL_WRITE (remote_desc, "-", 1); | |
3957 | } | |
3958 | ||
3959 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
3960 | ||
3961 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
3962 | SERIAL_WRITE (remote_desc, "+", 1); | |
3963 | } | |
3964 | \f | |
3965 | static void | |
3966 | remote_kill () | |
3967 | { | |
3968 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
3969 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
3970 | if (kill_kludge) | |
3971 | { | |
3972 | kill_kludge = 0; | |
3973 | target_mourn_inferior (); | |
3974 | return; | |
3975 | } | |
3976 | ||
3977 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
3978 | speaking terms with the remote system. */ | |
c5aa993b | 3979 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
3980 | |
3981 | /* Don't wait for it to die. I'm not really sure it matters whether | |
3982 | we do or not. For the existing stubs, kill is a noop. */ | |
3983 | target_mourn_inferior (); | |
3984 | } | |
3985 | ||
43ff13b4 JM |
3986 | /* Async version of remote_kill. */ |
3987 | static void | |
3988 | remote_async_kill () | |
3989 | { | |
3990 | /* Unregister the file descriptor from the event loop. */ | |
c2c6d25f JM |
3991 | if (SERIAL_IS_ASYNC_P (remote_desc)) |
3992 | SERIAL_ASYNC (remote_desc, NULL, 0); | |
43ff13b4 JM |
3993 | |
3994 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
3995 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
3996 | if (kill_kludge) | |
3997 | { | |
3998 | kill_kludge = 0; | |
3999 | target_mourn_inferior (); | |
4000 | return; | |
4001 | } | |
4002 | ||
4003 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4004 | speaking terms with the remote system. */ | |
c5aa993b | 4005 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4006 | |
4007 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4008 | we do or not. For the existing stubs, kill is a noop. */ | |
4009 | target_mourn_inferior (); | |
4010 | } | |
4011 | ||
c906108c SS |
4012 | static void |
4013 | remote_mourn () | |
4014 | { | |
4015 | remote_mourn_1 (&remote_ops); | |
4016 | } | |
4017 | ||
53a5351d JM |
4018 | static void |
4019 | remote_async_mourn () | |
4020 | { | |
4021 | remote_mourn_1 (&remote_async_ops); | |
4022 | } | |
4023 | ||
c906108c SS |
4024 | static void |
4025 | extended_remote_mourn () | |
4026 | { | |
4027 | /* We do _not_ want to mourn the target like this; this will | |
4028 | remove the extended remote target from the target stack, | |
4029 | and the next time the user says "run" it'll fail. | |
4030 | ||
4031 | FIXME: What is the right thing to do here? */ | |
4032 | #if 0 | |
4033 | remote_mourn_1 (&extended_remote_ops); | |
4034 | #endif | |
4035 | } | |
4036 | ||
4037 | /* Worker function for remote_mourn. */ | |
4038 | static void | |
4039 | remote_mourn_1 (target) | |
4040 | struct target_ops *target; | |
4041 | { | |
4042 | unpush_target (target); | |
4043 | generic_mourn_inferior (); | |
4044 | } | |
4045 | ||
4046 | /* In the extended protocol we want to be able to do things like | |
4047 | "run" and have them basically work as expected. So we need | |
4048 | a special create_inferior function. | |
4049 | ||
4050 | FIXME: One day add support for changing the exec file | |
4051 | we're debugging, arguments and an environment. */ | |
4052 | ||
4053 | static void | |
4054 | extended_remote_create_inferior (exec_file, args, env) | |
4055 | char *exec_file; | |
4056 | char *args; | |
4057 | char **env; | |
4058 | { | |
4059 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4060 | the remote server. */ | |
4061 | remove_breakpoints (); | |
4062 | ||
4063 | /* Now restart the remote server. */ | |
4064 | extended_remote_restart (); | |
4065 | ||
4066 | /* Now put the breakpoints back in. This way we're safe if the | |
4067 | restart function works via a unix fork on the remote side. */ | |
4068 | insert_breakpoints (); | |
4069 | ||
4070 | /* Clean up from the last time we were running. */ | |
4071 | clear_proceed_status (); | |
4072 | ||
4073 | /* Let the remote process run. */ | |
4074 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4075 | } | |
4076 | ||
43ff13b4 JM |
4077 | /* Async version of extended_remote_create_inferior. */ |
4078 | static void | |
4079 | extended_remote_async_create_inferior (exec_file, args, env) | |
4080 | char *exec_file; | |
4081 | char *args; | |
4082 | char **env; | |
4083 | { | |
4084 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4085 | the remote server. */ | |
4086 | remove_breakpoints (); | |
4087 | ||
4088 | /* If running asynchronously, register the target file descriptor | |
4089 | with the event loop. */ | |
2acceee2 JM |
4090 | if (event_loop_p && target_can_async_p ()) |
4091 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4092 | |
4093 | /* Now restart the remote server. */ | |
4094 | extended_remote_restart (); | |
4095 | ||
4096 | /* Now put the breakpoints back in. This way we're safe if the | |
4097 | restart function works via a unix fork on the remote side. */ | |
4098 | insert_breakpoints (); | |
4099 | ||
4100 | /* Clean up from the last time we were running. */ | |
4101 | clear_proceed_status (); | |
4102 | ||
4103 | /* Let the remote process run. */ | |
4104 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4105 | } | |
c906108c | 4106 | \f |
c5aa993b | 4107 | |
c906108c SS |
4108 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4109 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4110 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4111 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4112 | the standard routines that are in mem-break.c. */ | |
4113 | ||
4114 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4115 | the choice of breakpoint instruction affects target program design and | |
4116 | vice versa, and by making it user-tweakable, the special code here | |
4117 | goes away and we need fewer special GDB configurations. */ | |
4118 | ||
4119 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4120 | #define REMOTE_BREAKPOINT | |
4121 | #endif | |
4122 | ||
4123 | #ifdef REMOTE_BREAKPOINT | |
4124 | ||
4125 | /* If the target isn't bi-endian, just pretend it is. */ | |
4126 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4127 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4128 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4129 | #endif | |
4130 | ||
4131 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4132 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4133 | ||
4134 | #endif /* REMOTE_BREAKPOINT */ | |
4135 | ||
4136 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4137 | support. We read the contents of the target location and stash it, | |
4138 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4139 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4140 | memory allocated for saving the target contents. It is guaranteed | |
4141 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4142 | is accomplished via BREAKPOINT_MAX). */ | |
4143 | ||
4144 | static int | |
4145 | remote_insert_breakpoint (addr, contents_cache) | |
4146 | CORE_ADDR addr; | |
4147 | char *contents_cache; | |
4148 | { | |
4149 | #ifdef REMOTE_BREAKPOINT | |
4150 | int val; | |
96baa820 JM |
4151 | #endif |
4152 | int bp_size; | |
4153 | ||
4154 | /* Try the "Z" packet if it is not already disabled. | |
4155 | If it succeeds, then set the support to PACKET_ENABLE. | |
4156 | If it fails, and the user has explicitly requested the Z support | |
4157 | then report an error, otherwise, mark it disabled and go on. */ | |
4158 | ||
4159 | if ((remote_protocol_Z.support == PACKET_ENABLE) | |
4160 | || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN)) | |
4161 | { | |
e514a9d6 JM |
4162 | char *buf = alloca (PBUFSIZ); |
4163 | char *p = buf; | |
96baa820 JM |
4164 | |
4165 | addr = remote_address_masked (addr); | |
4166 | *(p++) = 'Z'; | |
4167 | *(p++) = '0'; | |
4168 | *(p++) = ','; | |
4169 | p += hexnumstr (p, (ULONGEST) addr); | |
4170 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4171 | sprintf (p, ",%d", bp_size); | |
4172 | ||
4173 | putpkt (buf); | |
4174 | getpkt (buf, 0); | |
4175 | ||
4176 | if (buf[0] != '\0') | |
4177 | { | |
4178 | remote_protocol_Z.support = PACKET_ENABLE; | |
4179 | return (buf[0] == 'E'); | |
4180 | } | |
4181 | ||
4182 | /* The stub does not support the 'Z' request. If the user has | |
4183 | explicitly requested the Z support, or if the stub previously | |
4184 | said it supported the packet, this is an error, | |
4185 | otherwise, mark it disabled. */ | |
4186 | ||
4187 | else if (remote_protocol_Z.support == PACKET_ENABLE) | |
4188 | { | |
4189 | error ("Protocol error: Z packet not recognized by stub"); | |
4190 | } | |
4191 | else | |
4192 | { | |
4193 | remote_protocol_Z.support = PACKET_DISABLE; | |
4194 | } | |
4195 | } | |
c906108c | 4196 | |
96baa820 | 4197 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4198 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4199 | ||
4200 | if (val == 0) | |
4201 | { | |
4202 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4203 | val = target_write_memory (addr, (char *) big_break_insn, | |
4204 | sizeof big_break_insn); | |
4205 | else | |
4206 | val = target_write_memory (addr, (char *) little_break_insn, | |
4207 | sizeof little_break_insn); | |
4208 | } | |
4209 | ||
4210 | return val; | |
4211 | #else | |
4212 | return memory_insert_breakpoint (addr, contents_cache); | |
4213 | #endif /* REMOTE_BREAKPOINT */ | |
4214 | } | |
4215 | ||
4216 | static int | |
4217 | remote_remove_breakpoint (addr, contents_cache) | |
4218 | CORE_ADDR addr; | |
4219 | char *contents_cache; | |
4220 | { | |
96baa820 JM |
4221 | int bp_size; |
4222 | ||
4223 | if ((remote_protocol_Z.support == PACKET_ENABLE) | |
4224 | || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN)) | |
4225 | { | |
e514a9d6 JM |
4226 | char *buf = alloca (PBUFSIZ); |
4227 | char *p = buf; | |
96baa820 JM |
4228 | |
4229 | *(p++) = 'z'; | |
4230 | *(p++) = '0'; | |
4231 | *(p++) = ','; | |
4232 | ||
4233 | addr = remote_address_masked (addr); | |
4234 | p += hexnumstr (p, (ULONGEST) addr); | |
4235 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4236 | sprintf (p, ",%d", bp_size); | |
4237 | ||
4238 | putpkt (buf); | |
4239 | getpkt (buf, 0); | |
4240 | ||
4241 | return (buf[0] == 'E'); | |
4242 | } | |
4243 | ||
c906108c SS |
4244 | #ifdef REMOTE_BREAKPOINT |
4245 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4246 | #else | |
4247 | return memory_remove_breakpoint (addr, contents_cache); | |
4248 | #endif /* REMOTE_BREAKPOINT */ | |
4249 | } | |
4250 | ||
96baa820 JM |
4251 | #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS |
4252 | int | |
4253 | remote_insert_watchpoint (addr, len, type) | |
4254 | CORE_ADDR addr; | |
4255 | int len; | |
4256 | int type; | |
4257 | { | |
e514a9d6 JM |
4258 | char *buf = alloca (PBUFSIZ); |
4259 | char *p; | |
96baa820 JM |
4260 | |
4261 | if (remote_protocol_Z.support == PACKET_DISABLE) | |
4262 | error ("Can't set hardware watchpoints without the 'Z' packet\n"); | |
4263 | ||
4264 | sprintf (buf, "Z%x,", type + 2 ); | |
4265 | p = strchr (buf, '\0'); | |
4266 | addr = remote_address_masked (addr); | |
4267 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4268 | sprintf (p, ",%x", len); |
96baa820 JM |
4269 | |
4270 | putpkt (buf); | |
4271 | getpkt (buf, 0); | |
4272 | ||
4273 | if (buf[0] == '\0' || buf [0] == 'E') | |
4274 | return -1; | |
4275 | ||
4276 | return 0; | |
4277 | } | |
4278 | ||
4279 | int | |
4280 | remote_remove_watchpoint (addr, len, type) | |
4281 | CORE_ADDR addr; | |
4282 | int len; | |
4283 | int type; | |
4284 | { | |
e514a9d6 JM |
4285 | char *buf = alloca (PBUFSIZ); |
4286 | char *p; | |
96baa820 JM |
4287 | |
4288 | sprintf (buf, "z%x,", type + 2 ); | |
4289 | p = strchr (buf, '\0'); | |
4290 | addr = remote_address_masked (addr); | |
4291 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4292 | sprintf (p, ",%x", len); |
96baa820 JM |
4293 | putpkt (buf); |
4294 | getpkt (buf, 0); | |
4295 | ||
4296 | if (buf[0] == '\0' || buf [0] == 'E') | |
4297 | return -1; | |
4298 | ||
4299 | return 0; | |
4300 | } | |
4301 | ||
4302 | int | |
4303 | remote_insert_hw_breakpoint (addr, len) | |
4304 | CORE_ADDR addr; | |
4305 | int len; | |
4306 | { | |
e514a9d6 JM |
4307 | char *buf = alloca (PBUFSIZ); |
4308 | char *p = buf; | |
96baa820 JM |
4309 | |
4310 | if (remote_protocol_Z.support == PACKET_DISABLE) | |
4311 | error ("Can't set hardware breakpoints without the 'Z' packet\n"); | |
4312 | ||
4313 | *(p++) = 'Z'; | |
4314 | *(p++) = '1'; | |
4315 | *(p++) = ','; | |
4316 | ||
4317 | addr = remote_address_masked (addr); | |
4318 | p += hexnumstr (p, (ULONGEST) addr); | |
4319 | *p = '\0'; | |
4320 | ||
4321 | putpkt (buf); | |
4322 | getpkt (buf, 0); | |
4323 | ||
4324 | if (buf[0] == '\0' || buf [0] == 'E') | |
4325 | return -1; | |
4326 | ||
4327 | return 0; | |
4328 | } | |
4329 | ||
4330 | int | |
4331 | remote_remove_hw_breakpoint (addr, len) | |
4332 | CORE_ADDR addr; | |
4333 | int len; | |
4334 | { | |
e514a9d6 JM |
4335 | char *buf = alloca (PBUFSIZ); |
4336 | char *p = buf; | |
96baa820 JM |
4337 | |
4338 | *(p++) = 'z'; | |
4339 | *(p++) = '1'; | |
4340 | *(p++) = ','; | |
4341 | ||
4342 | addr = remote_address_masked (addr); | |
4343 | p += hexnumstr (p, (ULONGEST) addr); | |
4344 | *p = '\0'; | |
4345 | ||
4346 | putpkt(buf); | |
4347 | getpkt (buf, 0); | |
4348 | ||
4349 | if (buf[0] == '\0' || buf [0] == 'E') | |
4350 | return -1; | |
4351 | ||
4352 | return 0; | |
4353 | } | |
4354 | #endif | |
4355 | ||
c906108c SS |
4356 | /* Some targets are only capable of doing downloads, and afterwards |
4357 | they switch to the remote serial protocol. This function provides | |
4358 | a clean way to get from the download target to the remote target. | |
4359 | It's basically just a wrapper so that we don't have to expose any | |
4360 | of the internal workings of remote.c. | |
4361 | ||
4362 | Prior to calling this routine, you should shutdown the current | |
4363 | target code, else you will get the "A program is being debugged | |
4364 | already..." message. Usually a call to pop_target() suffices. */ | |
4365 | ||
4366 | void | |
4367 | push_remote_target (name, from_tty) | |
4368 | char *name; | |
4369 | int from_tty; | |
4370 | { | |
4371 | printf_filtered ("Switching to remote protocol\n"); | |
4372 | remote_open (name, from_tty); | |
4373 | } | |
4374 | ||
4375 | /* Other targets want to use the entire remote serial module but with | |
4376 | certain remote_ops overridden. */ | |
4377 | ||
4378 | void | |
4379 | open_remote_target (name, from_tty, target, extended_p) | |
4380 | char *name; | |
4381 | int from_tty; | |
4382 | struct target_ops *target; | |
4383 | int extended_p; | |
4384 | { | |
4385 | printf_filtered ("Selecting the %sremote protocol\n", | |
4386 | (extended_p ? "extended-" : "")); | |
4387 | remote_open_1 (name, from_tty, target, extended_p); | |
4388 | } | |
4389 | ||
4390 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4391 | ||
c5aa993b JM |
4392 | static unsigned long crc32_table[256] = |
4393 | {0, 0}; | |
c906108c SS |
4394 | |
4395 | static unsigned long | |
4396 | crc32 (buf, len, crc) | |
4397 | unsigned char *buf; | |
4398 | int len; | |
4399 | unsigned int crc; | |
4400 | { | |
c5aa993b | 4401 | if (!crc32_table[1]) |
c906108c SS |
4402 | { |
4403 | /* Initialize the CRC table and the decoding table. */ | |
4404 | int i, j; | |
4405 | unsigned int c; | |
4406 | ||
4407 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4408 | { |
4409 | for (c = i << 24, j = 8; j > 0; --j) | |
4410 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4411 | crc32_table[i] = c; | |
4412 | } | |
c906108c SS |
4413 | } |
4414 | ||
4415 | while (len--) | |
4416 | { | |
4417 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4418 | buf++; | |
4419 | } | |
4420 | return crc; | |
4421 | } | |
4422 | ||
4423 | /* compare-sections command | |
4424 | ||
4425 | With no arguments, compares each loadable section in the exec bfd | |
4426 | with the same memory range on the target, and reports mismatches. | |
4427 | Useful for verifying the image on the target against the exec file. | |
4428 | Depends on the target understanding the new "qCRC:" request. */ | |
4429 | ||
e514a9d6 JM |
4430 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4431 | target method (target verify memory) and generic version of the | |
4432 | actual command. This will allow other high-level code (especially | |
4433 | generic_load()) to make use of this target functionality. */ | |
4434 | ||
c906108c SS |
4435 | static void |
4436 | compare_sections_command (args, from_tty) | |
4437 | char *args; | |
4438 | int from_tty; | |
4439 | { | |
4440 | asection *s; | |
4441 | unsigned long host_crc, target_crc; | |
4442 | extern bfd *exec_bfd; | |
4443 | struct cleanup *old_chain; | |
085dd6e6 JM |
4444 | char *tmp; |
4445 | char *sectdata; | |
4446 | char *sectname; | |
4447 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4448 | bfd_size_type size; |
4449 | bfd_vma lma; | |
4450 | int matched = 0; | |
4451 | int mismatched = 0; | |
4452 | ||
4453 | if (!exec_bfd) | |
4454 | error ("command cannot be used without an exec file"); | |
4455 | if (!current_target.to_shortname || | |
4456 | strcmp (current_target.to_shortname, "remote") != 0) | |
4457 | error ("command can only be used with remote target"); | |
4458 | ||
c5aa993b | 4459 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4460 | { |
4461 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4462 | continue; /* skip non-loadable section */ |
c906108c SS |
4463 | |
4464 | size = bfd_get_section_size_before_reloc (s); | |
4465 | if (size == 0) | |
c5aa993b | 4466 | continue; /* skip zero-length section */ |
c906108c SS |
4467 | |
4468 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4469 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4470 | continue; /* not the section selected by user */ |
c906108c | 4471 | |
c5aa993b | 4472 | matched = 1; /* do this section */ |
c906108c SS |
4473 | lma = s->lma; |
4474 | /* FIXME: assumes lma can fit into long */ | |
4475 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4476 | putpkt (buf); | |
4477 | ||
4478 | /* be clever; compute the host_crc before waiting for target reply */ | |
4479 | sectdata = xmalloc (size); | |
4480 | old_chain = make_cleanup (free, sectdata); | |
4481 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |
4482 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4483 | ||
4484 | getpkt (buf, 0); | |
4485 | if (buf[0] == 'E') | |
4486 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4487 | sectname, lma, lma + size); | |
4488 | if (buf[0] != 'C') | |
4489 | error ("remote target does not support this operation"); | |
4490 | ||
4491 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4492 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4493 | ||
d4f3574e SS |
4494 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4495 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4496 | if (host_crc == target_crc) |
4497 | printf_filtered ("matched.\n"); | |
4498 | else | |
c5aa993b JM |
4499 | { |
4500 | printf_filtered ("MIS-MATCHED!\n"); | |
4501 | mismatched++; | |
4502 | } | |
c906108c SS |
4503 | |
4504 | do_cleanups (old_chain); | |
4505 | } | |
4506 | if (mismatched > 0) | |
4507 | warning ("One or more sections of the remote executable does not match\n\ | |
4508 | the loaded file\n"); | |
4509 | if (args && !matched) | |
4510 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4511 | } | |
4512 | ||
4513 | static int | |
4514 | remote_query (query_type, buf, outbuf, bufsiz) | |
4515 | int query_type; | |
4516 | char *buf; | |
4517 | char *outbuf; | |
4518 | int *bufsiz; | |
4519 | { | |
4520 | int i; | |
085dd6e6 | 4521 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4522 | char *p2 = &buf2[0]; |
c906108c | 4523 | |
c5aa993b | 4524 | if (!bufsiz) |
c906108c SS |
4525 | error ("null pointer to remote bufer size specified"); |
4526 | ||
cce74817 | 4527 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4528 | the caller know and return what the minimum size is */ |
4529 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4530 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4531 | { |
4532 | *bufsiz = PBUFSIZ; | |
4533 | return -1; | |
4534 | } | |
4535 | ||
4536 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4537 | if (!remote_desc) |
c906108c SS |
4538 | error ("remote query is only available after target open"); |
4539 | ||
4540 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4541 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4542 | error ("invalid remote query type"); |
4543 | ||
c5aa993b | 4544 | if (!buf) |
c906108c SS |
4545 | error ("null remote query specified"); |
4546 | ||
c5aa993b | 4547 | if (!outbuf) |
c906108c SS |
4548 | error ("remote query requires a buffer to receive data"); |
4549 | ||
4550 | outbuf[0] = '\0'; | |
4551 | ||
4552 | *p2++ = 'q'; | |
4553 | *p2++ = query_type; | |
4554 | ||
4555 | /* we used one buffer char for the remote protocol q command and another | |
4556 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4557 | plus one extra in case we are debugging (remote_debug), | |
4558 | we have PBUFZIZ - 7 left to pack the query string */ | |
4559 | i = 0; | |
c5aa993b | 4560 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4561 | { |
4562 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4563 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4564 | error ("illegal characters in query string"); | |
c906108c SS |
4565 | |
4566 | *p2++ = buf[i]; | |
4567 | i++; | |
4568 | } | |
4569 | *p2 = buf[i]; | |
4570 | ||
c5aa993b | 4571 | if (buf[i]) |
c906108c SS |
4572 | error ("query larger than available buffer"); |
4573 | ||
4574 | i = putpkt (buf2); | |
c5aa993b JM |
4575 | if (i < 0) |
4576 | return i; | |
c906108c SS |
4577 | |
4578 | getpkt (outbuf, 0); | |
4579 | ||
4580 | return 0; | |
4581 | } | |
4582 | ||
96baa820 JM |
4583 | static void |
4584 | remote_rcmd (char *command, | |
4585 | struct gdb_file *outbuf) | |
4586 | { | |
4587 | int i; | |
4588 | char *buf = alloca (PBUFSIZ); | |
4589 | char *p = buf; | |
4590 | ||
4591 | if (!remote_desc) | |
4592 | error ("remote rcmd is only available after target open"); | |
4593 | ||
7be570e7 JM |
4594 | /* Send a NULL command across as an empty command */ |
4595 | if (command == NULL) | |
4596 | command = ""; | |
4597 | ||
96baa820 JM |
4598 | /* The query prefix */ |
4599 | strcpy (buf, "qRcmd,"); | |
4600 | p = strchr (buf, '\0'); | |
4601 | ||
4602 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4603 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4604 | ||
4605 | /* Encode the actual command */ | |
4606 | for (i = 0; command[i]; i++) | |
4607 | { | |
4608 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4609 | *p++ = tohex (command[i] & 0xf); | |
4610 | } | |
4611 | *p = '\0'; | |
4612 | ||
4613 | if (putpkt (buf) < 0) | |
4614 | error ("Communication problem with target\n"); | |
4615 | ||
4616 | /* get/display the response */ | |
4617 | while (1) | |
4618 | { | |
4619 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4620 | buf[0] = '\0'; | |
4621 | getpkt (buf, 0); | |
4622 | if (buf[0] == '\0') | |
4623 | error ("Target does not support this command\n"); | |
4624 | if (buf[0] == 'O' && buf[1] != 'K') | |
4625 | { | |
4626 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4627 | continue; | |
4628 | } | |
4629 | if (strcmp (buf, "OK") == 0) | |
4630 | break; | |
7be570e7 JM |
4631 | if (strlen (buf) == 3 && buf[0] == 'E' |
4632 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4633 | { | |
4634 | error ("Protocol error with Rcmd"); | |
4635 | } | |
96baa820 JM |
4636 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4637 | { | |
4638 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4639 | fputc_unfiltered (c, outbuf); | |
4640 | } | |
4641 | break; | |
4642 | } | |
4643 | } | |
4644 | ||
c906108c SS |
4645 | static void |
4646 | packet_command (args, from_tty) | |
4647 | char *args; | |
4648 | int from_tty; | |
4649 | { | |
085dd6e6 | 4650 | char *buf = alloca (PBUFSIZ); |
c906108c | 4651 | |
c5aa993b | 4652 | if (!remote_desc) |
c906108c SS |
4653 | error ("command can only be used with remote target"); |
4654 | ||
c5aa993b | 4655 | if (!args) |
c906108c SS |
4656 | error ("remote-packet command requires packet text as argument"); |
4657 | ||
4658 | puts_filtered ("sending: "); | |
4659 | print_packet (args); | |
4660 | puts_filtered ("\n"); | |
4661 | putpkt (args); | |
4662 | ||
4663 | getpkt (buf, 0); | |
4664 | puts_filtered ("received: "); | |
4665 | print_packet (buf); | |
4666 | puts_filtered ("\n"); | |
4667 | } | |
4668 | ||
4669 | #if 0 | |
4670 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4671 | ||
c5aa993b | 4672 | static void display_thread_info PARAMS ((struct gdb_ext_thread_info * info)); |
c906108c SS |
4673 | |
4674 | static void threadset_test_cmd PARAMS ((char *cmd, int tty)); | |
4675 | ||
4676 | static void threadalive_test PARAMS ((char *cmd, int tty)); | |
4677 | ||
4678 | static void threadlist_test_cmd PARAMS ((char *cmd, int tty)); | |
4679 | ||
c5aa993b | 4680 | int get_and_display_threadinfo PARAMS ((threadref * ref)); |
c906108c SS |
4681 | |
4682 | static void threadinfo_test_cmd PARAMS ((char *cmd, int tty)); | |
4683 | ||
c5aa993b | 4684 | static int thread_display_step PARAMS ((threadref * ref, void *context)); |
c906108c SS |
4685 | |
4686 | static void threadlist_update_test_cmd PARAMS ((char *cmd, int tty)); | |
4687 | ||
4688 | static void init_remote_threadtests PARAMS ((void)); | |
4689 | ||
c5aa993b | 4690 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4691 | |
4692 | static void | |
4693 | threadset_test_cmd (cmd, tty) | |
4694 | char *cmd; | |
4695 | int tty; | |
4696 | { | |
4697 | int sample_thread = SAMPLE_THREAD; | |
4698 | ||
4699 | printf_filtered ("Remote threadset test\n"); | |
4700 | set_thread (sample_thread, 1); | |
4701 | } | |
4702 | ||
4703 | ||
4704 | static void | |
4705 | threadalive_test (cmd, tty) | |
4706 | char *cmd; | |
4707 | int tty; | |
4708 | { | |
4709 | int sample_thread = SAMPLE_THREAD; | |
4710 | ||
4711 | if (remote_thread_alive (sample_thread)) | |
4712 | printf_filtered ("PASS: Thread alive test\n"); | |
4713 | else | |
4714 | printf_filtered ("FAIL: Thread alive test\n"); | |
4715 | } | |
4716 | ||
4717 | void output_threadid PARAMS ((char *title, threadref * ref)); | |
4718 | ||
4719 | void | |
4720 | output_threadid (title, ref) | |
4721 | char *title; | |
4722 | threadref *ref; | |
4723 | { | |
4724 | char hexid[20]; | |
4725 | ||
4726 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4727 | hexid[16] = 0; | |
4728 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4729 | } | |
4730 | ||
4731 | static void | |
4732 | threadlist_test_cmd (cmd, tty) | |
4733 | char *cmd; | |
4734 | int tty; | |
4735 | { | |
4736 | int startflag = 1; | |
4737 | threadref nextthread; | |
4738 | int done, result_count; | |
4739 | threadref threadlist[3]; | |
4740 | ||
4741 | printf_filtered ("Remote Threadlist test\n"); | |
4742 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4743 | &result_count, &threadlist[0])) | |
4744 | printf_filtered ("FAIL: threadlist test\n"); | |
4745 | else | |
4746 | { | |
4747 | threadref *scan = threadlist; | |
4748 | threadref *limit = scan + result_count; | |
4749 | ||
4750 | while (scan < limit) | |
4751 | output_threadid (" thread ", scan++); | |
4752 | } | |
4753 | } | |
4754 | ||
4755 | void | |
4756 | display_thread_info (info) | |
4757 | struct gdb_ext_thread_info *info; | |
4758 | { | |
4759 | output_threadid ("Threadid: ", &info->threadid); | |
4760 | printf_filtered ("Name: %s\n ", info->shortname); | |
4761 | printf_filtered ("State: %s\n", info->display); | |
4762 | printf_filtered ("other: %s\n\n", info->more_display); | |
4763 | } | |
4764 | ||
4765 | int | |
4766 | get_and_display_threadinfo (ref) | |
4767 | threadref *ref; | |
4768 | { | |
4769 | int result; | |
4770 | int set; | |
4771 | struct gdb_ext_thread_info threadinfo; | |
4772 | ||
4773 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4774 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4775 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4776 | display_thread_info (&threadinfo); | |
4777 | return result; | |
4778 | } | |
4779 | ||
4780 | static void | |
4781 | threadinfo_test_cmd (cmd, tty) | |
4782 | char *cmd; | |
4783 | int tty; | |
4784 | { | |
4785 | int athread = SAMPLE_THREAD; | |
4786 | threadref thread; | |
4787 | int set; | |
4788 | ||
4789 | int_to_threadref (&thread, athread); | |
4790 | printf_filtered ("Remote Threadinfo test\n"); | |
4791 | if (!get_and_display_threadinfo (&thread)) | |
4792 | printf_filtered ("FAIL cannot get thread info\n"); | |
4793 | } | |
4794 | ||
4795 | static int | |
4796 | thread_display_step (ref, context) | |
4797 | threadref *ref; | |
4798 | void *context; | |
4799 | { | |
4800 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4801 | return get_and_display_threadinfo (ref); | |
4802 | } | |
4803 | ||
4804 | static void | |
4805 | threadlist_update_test_cmd (cmd, tty) | |
4806 | char *cmd; | |
4807 | int tty; | |
4808 | { | |
4809 | printf_filtered ("Remote Threadlist update test\n"); | |
4810 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4811 | } | |
4812 | ||
4813 | static void | |
4814 | init_remote_threadtests (void) | |
4815 | { | |
4816 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4817 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4818 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4819 | "Fetch and display info about one thread"); | |
4820 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4821 | "Test setting to a different thread"); | |
4822 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4823 | "Iterate through updating all remote thread info"); | |
4824 | add_com ("talive", class_obscure, threadalive_test, | |
4825 | " Remote thread alive test "); | |
4826 | } | |
4827 | ||
4828 | #endif /* 0 */ | |
4829 | ||
4830 | static void | |
4831 | init_remote_ops () | |
4832 | { | |
c5aa993b | 4833 | remote_ops.to_shortname = "remote"; |
c906108c | 4834 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4835 | remote_ops.to_doc = |
c906108c | 4836 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
c5aa993b JM |
4837 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
4838 | remote_ops.to_open = remote_open; | |
4839 | remote_ops.to_close = remote_close; | |
c906108c | 4840 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4841 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4842 | remote_ops.to_wait = remote_wait; |
4843 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4844 | remote_ops.to_store_registers = remote_store_registers; | |
4845 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4846 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4847 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4848 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4849 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4850 | remote_ops.to_kill = remote_kill; |
4851 | remote_ops.to_load = generic_load; | |
c906108c SS |
4852 | remote_ops.to_mourn_inferior = remote_mourn; |
4853 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4854 | remote_ops.to_find_new_threads = remote_threads_info; |
c906108c SS |
4855 | remote_ops.to_stop = remote_stop; |
4856 | remote_ops.to_query = remote_query; | |
96baa820 | 4857 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 4858 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
4859 | remote_ops.to_has_all_memory = 1; |
4860 | remote_ops.to_has_memory = 1; | |
4861 | remote_ops.to_has_stack = 1; | |
4862 | remote_ops.to_has_registers = 1; | |
4863 | remote_ops.to_has_execution = 1; | |
4864 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4865 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4866 | } |
4867 | ||
4868 | /* Set up the extended remote vector by making a copy of the standard | |
4869 | remote vector and adding to it. */ | |
4870 | ||
4871 | static void | |
4872 | init_extended_remote_ops () | |
4873 | { | |
4874 | extended_remote_ops = remote_ops; | |
4875 | ||
0f71a2f6 | 4876 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4877 | extended_remote_ops.to_longname = |
c906108c | 4878 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4879 | extended_remote_ops.to_doc = |
c906108c SS |
4880 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4881 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4882 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4883 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4884 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4885 | } |
4886 | ||
4887 | /* | |
4888 | * Command: info remote-process | |
4889 | * | |
4890 | * This implements Cisco's version of the "info proc" command. | |
4891 | * | |
4892 | * This query allows the target stub to return an arbitrary string | |
4893 | * (or strings) giving arbitrary information about the target process. | |
4894 | * This is optional; the target stub isn't required to implement it. | |
4895 | * | |
4896 | * Syntax: qfProcessInfo request first string | |
4897 | * qsProcessInfo request subsequent string | |
4898 | * reply: 'O'<hex-encoded-string> | |
4899 | * 'l' last reply (empty) | |
4900 | */ | |
4901 | ||
4902 | static void | |
4903 | remote_info_process (args, from_tty) | |
4904 | char *args; | |
4905 | int from_tty; | |
4906 | { | |
085dd6e6 | 4907 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
4908 | |
4909 | if (remote_desc == 0) | |
4910 | error ("Command can only be used when connected to the remote target."); | |
4911 | ||
4912 | putpkt ("qfProcessInfo"); | |
4913 | getpkt (buf, 0); | |
4914 | if (buf[0] == 0) | |
c5aa993b | 4915 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
4916 | |
4917 | if (buf[0] == 'E') | |
4918 | error ("info proc: target error."); | |
4919 | ||
c5aa993b | 4920 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
4921 | { |
4922 | remote_console_output (&buf[1]); | |
4923 | putpkt ("qsProcessInfo"); | |
4924 | getpkt (buf, 0); | |
4925 | } | |
4926 | } | |
4927 | ||
4928 | /* | |
4929 | * Target Cisco | |
4930 | */ | |
4931 | ||
4932 | static void | |
4933 | remote_cisco_open (name, from_tty) | |
4934 | char *name; | |
4935 | int from_tty; | |
4936 | { | |
4937 | if (name == 0) | |
4938 | error ( | |
c5aa993b | 4939 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
4940 | device is attached to the remote system (e.g. host:port)."); |
4941 | ||
6426a772 JM |
4942 | /* See FIXME above */ |
4943 | wait_forever_enabled_p = 1; | |
4944 | ||
0f71a2f6 JM |
4945 | target_preopen (from_tty); |
4946 | ||
4947 | unpush_target (&remote_cisco_ops); | |
4948 | ||
4949 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
4950 | ||
4951 | remote_desc = SERIAL_OPEN (name); | |
4952 | if (!remote_desc) | |
4953 | perror_with_name (name); | |
4954 | ||
4955 | /* | |
4956 | * If a baud rate was specified on the gdb command line it will | |
4957 | * be greater than the initial value of -1. If it is, use it otherwise | |
4958 | * default to 9600 | |
4959 | */ | |
4960 | ||
4961 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 4962 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
4963 | { |
4964 | SERIAL_CLOSE (remote_desc); | |
4965 | perror_with_name (name); | |
4966 | } | |
4967 | ||
4968 | SERIAL_RAW (remote_desc); | |
4969 | ||
4970 | /* If there is something sitting in the buffer we might take it as a | |
4971 | response to a command, which would be bad. */ | |
4972 | SERIAL_FLUSH_INPUT (remote_desc); | |
4973 | ||
4974 | if (from_tty) | |
4975 | { | |
4976 | puts_filtered ("Remote debugging using "); | |
4977 | puts_filtered (name); | |
4978 | puts_filtered ("\n"); | |
4979 | } | |
4980 | ||
4981 | remote_cisco_mode = 1; | |
4982 | ||
4983 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
4984 | ||
5a2468f5 | 4985 | init_packet_config (&remote_protocol_P); |
96baa820 | 4986 | init_packet_config (&remote_protocol_Z); |
0f71a2f6 | 4987 | |
c5aa993b | 4988 | general_thread = -2; |
0f71a2f6 JM |
4989 | continue_thread = -2; |
4990 | ||
4991 | /* Force remote_write_bytes to check whether target supports | |
4992 | binary downloading. */ | |
96baa820 | 4993 | init_packet_config (&remote_protocol_binary_download); |
0f71a2f6 JM |
4994 | |
4995 | /* Without this, some commands which require an active target (such | |
4996 | as kill) won't work. This variable serves (at least) double duty | |
4997 | as both the pid of the target process (if it has such), and as a | |
4998 | flag indicating that a target is active. These functions should | |
4999 | be split out into seperate variables, especially since GDB will | |
5000 | someday have a notion of debugging several processes. */ | |
5001 | inferior_pid = MAGIC_NULL_PID; | |
5002 | ||
5003 | /* Start the remote connection; if error (0), discard this target. */ | |
5004 | ||
c5aa993b JM |
5005 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5006 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5007 | RETURN_MASK_ALL)) |
5008 | { | |
5009 | pop_target (); | |
5010 | return; | |
5011 | } | |
5012 | } | |
5013 | ||
5014 | static void | |
5015 | remote_cisco_close (quitting) | |
5016 | int quitting; | |
5017 | { | |
5018 | remote_cisco_mode = 0; | |
5019 | remote_close (quitting); | |
5020 | } | |
5021 | ||
c5aa993b JM |
5022 | static void |
5023 | remote_cisco_mourn | |
5024 | PARAMS ((void)) | |
0f71a2f6 JM |
5025 | { |
5026 | remote_mourn_1 (&remote_cisco_ops); | |
5027 | } | |
5028 | ||
c5aa993b JM |
5029 | enum |
5030 | { | |
5031 | READ_MORE, | |
5032 | FATAL_ERROR, | |
5033 | ENTER_DEBUG, | |
0f71a2f6 | 5034 | DISCONNECT_TELNET |
c5aa993b JM |
5035 | } |
5036 | minitelnet_return; | |
0f71a2f6 JM |
5037 | |
5038 | /* shared between readsocket() and readtty() */ | |
5039 | static char *tty_input; | |
5040 | ||
5041 | static int escape_count; | |
5042 | static int echo_check; | |
5043 | extern int quit_flag; | |
5044 | ||
5045 | static int | |
5046 | readsocket () | |
5047 | { | |
5048 | int data; | |
5049 | ||
5050 | /* Loop until the socket doesn't have any more data */ | |
5051 | ||
c5aa993b | 5052 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5053 | { |
5054 | /* Check for the escape sequence */ | |
c5aa993b | 5055 | if (data == '|') |
0f71a2f6 JM |
5056 | { |
5057 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5058 | if (++escape_count == 4) |
0f71a2f6 JM |
5059 | { |
5060 | return ENTER_DEBUG; | |
5061 | } | |
c5aa993b JM |
5062 | else |
5063 | { /* This is a '|', but not the fourth in a row. | |
5064 | Continue without echoing it. If it isn't actually | |
5065 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5066 | continue; |
5067 | } | |
5068 | } | |
c5aa993b JM |
5069 | else |
5070 | /* Not a '|' */ | |
5071 | { | |
0f71a2f6 JM |
5072 | /* Ensure any pending '|'s are flushed. */ |
5073 | ||
c5aa993b JM |
5074 | for (; escape_count > 0; escape_count--) |
5075 | putchar ('|'); | |
0f71a2f6 | 5076 | } |
0f71a2f6 | 5077 | |
c5aa993b JM |
5078 | if (data == '\r') /* If this is a return character, */ |
5079 | continue; /* - just supress it. */ | |
5080 | ||
5081 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5082 | { |
5083 | if (tty_input[echo_check] == data) | |
5084 | { | |
c5aa993b JM |
5085 | echo_check++; /* Character matched user input: */ |
5086 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5087 | } |
c5aa993b JM |
5088 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5089 | { /* End of the line (and of echo checking). */ | |
5090 | echo_check = -1; /* No more echo supression */ | |
5091 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5092 | } |
5093 | else | |
c5aa993b JM |
5094 | { /* Failed check for echo of user input. |
5095 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5096 | int j; |
5097 | ||
c5aa993b | 5098 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5099 | putchar (tty_input[j]); |
5100 | echo_check = -1; | |
5101 | } | |
5102 | } | |
c5aa993b | 5103 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5104 | } |
5105 | ||
c5aa993b JM |
5106 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5107 | return READ_MORE; /* Try to read some more */ | |
5108 | else | |
5109 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5110 | } |
5111 | ||
5112 | static int | |
5113 | readtty () | |
5114 | { | |
0f71a2f6 JM |
5115 | int tty_bytecount; |
5116 | ||
5117 | /* First, read a buffer full from the terminal */ | |
5118 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5119 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5120 | { |
5121 | perror ("readtty: read failed"); | |
5122 | return FATAL_ERROR; | |
5123 | } | |
5124 | ||
5125 | /* Remove a quoted newline. */ | |
5126 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5127 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5128 | { | |
c5aa993b JM |
5129 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5130 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5131 | } |
5132 | ||
5133 | /* Turn trailing newlines into returns */ | |
5134 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5135 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5136 | |
5137 | /* If the line consists of a ~, enter debugging mode. */ | |
5138 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5139 | return ENTER_DEBUG; | |
5140 | ||
5141 | /* Make this a zero terminated string and write it out */ | |
5142 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5143 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5144 | { |
5145 | perror_with_name ("readtty: write failed"); | |
5146 | return FATAL_ERROR; | |
5147 | } | |
5148 | ||
5149 | return READ_MORE; | |
5150 | } | |
5151 | ||
5152 | static int | |
5153 | minitelnet () | |
5154 | { | |
5155 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5156 | int tablesize; /* max number of FDs for select */ |
5157 | int status; | |
5158 | int quit_count = 0; | |
0f71a2f6 JM |
5159 | |
5160 | extern int escape_count; /* global shared by readsocket */ | |
5161 | extern int echo_check; /* ditto */ | |
5162 | ||
5163 | escape_count = 0; | |
c5aa993b | 5164 | echo_check = -1; |
0f71a2f6 JM |
5165 | |
5166 | tablesize = 8 * sizeof (input); | |
5167 | ||
c5aa993b | 5168 | for (;;) |
0f71a2f6 JM |
5169 | { |
5170 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5171 | this must be done *before* the select as there may be |
5172 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5173 | |
c5aa993b | 5174 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5175 | { |
5176 | error ("Debugging terminated by communications error"); | |
5177 | } | |
c5aa993b | 5178 | else if (status != READ_MORE) |
0f71a2f6 JM |
5179 | { |
5180 | return (status); | |
5181 | } | |
5182 | ||
c5aa993b | 5183 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5184 | |
5185 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5186 | |
0f71a2f6 | 5187 | FD_ZERO (&input); |
c5aa993b | 5188 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5189 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5190 | |
5191 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5192 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5193 | { |
5194 | error ("Communications error on select %d", errno); | |
5195 | } | |
5196 | ||
5197 | /* Handle Control-C typed */ | |
5198 | ||
c5aa993b | 5199 | if (quit_flag) |
0f71a2f6 JM |
5200 | { |
5201 | if ((++quit_count) == 2) | |
5202 | { | |
5203 | if (query ("Interrupt GDB? ")) | |
5204 | { | |
5205 | printf_filtered ("Interrupted by user.\n"); | |
5206 | return_to_top_level (RETURN_QUIT); | |
5207 | } | |
5208 | quit_count = 0; | |
5209 | } | |
5210 | quit_flag = 0; | |
5211 | ||
5212 | if (remote_break) | |
5213 | SERIAL_SEND_BREAK (remote_desc); | |
5214 | else | |
5215 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5216 | ||
5217 | continue; | |
5218 | } | |
5219 | ||
5220 | /* Handle console input */ | |
5221 | ||
c5aa993b | 5222 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5223 | { |
5224 | quit_count = 0; | |
5225 | echo_check = 0; | |
5226 | status = readtty (); | |
5227 | if (status == READ_MORE) | |
5228 | continue; | |
5229 | ||
5230 | return status; /* telnet session ended */ | |
5231 | } | |
5232 | } | |
5233 | } | |
5234 | ||
5235 | static int | |
5236 | remote_cisco_wait (pid, status) | |
5237 | int pid; | |
5238 | struct target_waitstatus *status; | |
5239 | { | |
c5aa993b | 5240 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5241 | { |
5242 | error ("Debugging session terminated by protocol error"); | |
5243 | } | |
5244 | putpkt ("?"); | |
5245 | return remote_wait (pid, status); | |
5246 | } | |
5247 | ||
5248 | static void | |
5249 | init_remote_cisco_ops () | |
5250 | { | |
5251 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5252 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5253 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5254 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5255 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5256 | remote_cisco_ops.to_open = remote_cisco_open; |
5257 | remote_cisco_ops.to_close = remote_cisco_close; | |
5258 | remote_cisco_ops.to_detach = remote_detach; | |
5259 | remote_cisco_ops.to_resume = remote_resume; | |
5260 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5261 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5262 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5263 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5264 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5265 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5266 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5267 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5268 | remote_cisco_ops.to_kill = remote_kill; |
5269 | remote_cisco_ops.to_load = generic_load; | |
5270 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5271 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5272 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
5273 | remote_cisco_ops.to_stratum = process_stratum; | |
5274 | remote_cisco_ops.to_has_all_memory = 1; | |
5275 | remote_cisco_ops.to_has_memory = 1; | |
5276 | remote_cisco_ops.to_has_stack = 1; | |
5277 | remote_cisco_ops.to_has_registers = 1; | |
5278 | remote_cisco_ops.to_has_execution = 1; | |
5279 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5280 | } |
5281 | ||
6426a772 JM |
5282 | static int |
5283 | remote_can_async_p (void) | |
5284 | { | |
5285 | /* We're async whenever the serial device is. */ | |
5286 | return SERIAL_CAN_ASYNC_P (remote_desc); | |
5287 | } | |
5288 | ||
5289 | static int | |
5290 | remote_is_async_p (void) | |
5291 | { | |
5292 | /* We're async whenever the serial device is. */ | |
5293 | return SERIAL_IS_ASYNC_P (remote_desc); | |
5294 | } | |
5295 | ||
2acceee2 JM |
5296 | /* Pass the SERIAL event on and up to the client. One day this code |
5297 | will be able to delay notifying the client of an event until the | |
5298 | point where an entire packet has been received. */ | |
5299 | ||
5300 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5301 | static void *async_client_context; | |
5302 | static serial_event_ftype remote_async_serial_handler; | |
5303 | ||
6426a772 | 5304 | static void |
2acceee2 | 5305 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5306 | { |
2acceee2 JM |
5307 | /* Don't propogate error information up to the client. Instead let |
5308 | the client find out about the error by querying the target. */ | |
5309 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5310 | } | |
5311 | ||
5312 | static void | |
5313 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5314 | { | |
5315 | if (callback != NULL) | |
5316 | { | |
5317 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5318 | async_client_callback = callback; | |
5319 | async_client_context = context; | |
5320 | } | |
5321 | else | |
5322 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5323 | } |
5324 | ||
43ff13b4 JM |
5325 | /* Target async and target extended-async. |
5326 | ||
5327 | This are temporary targets, until it is all tested. Eventually | |
5328 | async support will be incorporated int the usual 'remote' | |
5329 | target. */ | |
5330 | ||
5331 | static void | |
5332 | init_remote_async_ops () | |
5333 | { | |
5334 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5335 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5336 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5337 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5338 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5339 | remote_async_ops.to_open = remote_async_open; |
5340 | remote_async_ops.to_close = remote_close; | |
5341 | remote_async_ops.to_detach = remote_async_detach; | |
5342 | remote_async_ops.to_resume = remote_async_resume; | |
5343 | remote_async_ops.to_wait = remote_async_wait; | |
5344 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5345 | remote_async_ops.to_store_registers = remote_store_registers; | |
5346 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5347 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5348 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5349 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5350 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5351 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5352 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5353 | remote_async_ops.to_kill = remote_async_kill; |
5354 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5355 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5356 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5357 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
43ff13b4 JM |
5358 | remote_async_ops.to_stop = remote_stop; |
5359 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5360 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5361 | remote_async_ops.to_stratum = process_stratum; |
5362 | remote_async_ops.to_has_all_memory = 1; | |
5363 | remote_async_ops.to_has_memory = 1; | |
5364 | remote_async_ops.to_has_stack = 1; | |
5365 | remote_async_ops.to_has_registers = 1; | |
5366 | remote_async_ops.to_has_execution = 1; | |
5367 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5368 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5369 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5370 | remote_async_ops.to_async = remote_async; | |
c5aa993b | 5371 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5372 | } |
5373 | ||
5374 | /* Set up the async extended remote vector by making a copy of the standard | |
5375 | remote vector and adding to it. */ | |
5376 | ||
5377 | static void | |
5378 | init_extended_async_remote_ops () | |
5379 | { | |
5380 | extended_async_remote_ops = remote_async_ops; | |
5381 | ||
5382 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5383 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5384 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5385 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5386 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5387 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5388 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5389 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5390 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5391 | } | |
5392 | ||
5a2468f5 JM |
5393 | static void |
5394 | set_remote_cmd (args, from_tty) | |
5395 | char *args; | |
5396 | int from_tty; | |
5397 | { | |
5398 | ||
5399 | } | |
5400 | ||
5401 | ||
0f71a2f6 JM |
5402 | static void |
5403 | build_remote_gdbarch_data () | |
5404 | { | |
11cf8741 JM |
5405 | build_remote_packet_sizes (); |
5406 | ||
5407 | /* Cisco stuff */ | |
0f71a2f6 | 5408 | tty_input = xmalloc (PBUFSIZ); |
11cf8741 | 5409 | remote_address_size = TARGET_PTR_BIT; |
0f71a2f6 JM |
5410 | } |
5411 | ||
c906108c SS |
5412 | void |
5413 | _initialize_remote () | |
5414 | { | |
5a2468f5 JM |
5415 | static struct cmd_list_element *remote_set_cmdlist; |
5416 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5417 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5418 | |
0f71a2f6 JM |
5419 | /* architecture specific data */ |
5420 | build_remote_gdbarch_data (); | |
5421 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5422 | register_remote_packet_sizes (); |
5423 | register_gdbarch_swap (&remote_address_size, | |
5424 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5425 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5426 | ||
c906108c SS |
5427 | init_remote_ops (); |
5428 | add_target (&remote_ops); | |
5429 | ||
5430 | init_extended_remote_ops (); | |
5431 | add_target (&extended_remote_ops); | |
cce74817 | 5432 | |
43ff13b4 JM |
5433 | init_remote_async_ops (); |
5434 | add_target (&remote_async_ops); | |
5435 | ||
5436 | init_extended_async_remote_ops (); | |
5437 | add_target (&extended_async_remote_ops); | |
5438 | ||
0f71a2f6 JM |
5439 | init_remote_cisco_ops (); |
5440 | add_target (&remote_cisco_ops); | |
5441 | ||
c906108c SS |
5442 | #if 0 |
5443 | init_remote_threadtests (); | |
5444 | #endif | |
5445 | ||
5a2468f5 JM |
5446 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5447 | Remote protocol specific variables\n\ | |
5448 | Configure various remote-protocol specific variables such as\n\ | |
5449 | the packets being used", | |
cff3e48b | 5450 | &remote_set_cmdlist, "set remote ", |
5a2468f5 JM |
5451 | 0/*allow-unknown*/, &setlist); |
5452 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ | |
5453 | Remote protocol specific variables\n\ | |
5454 | Configure various remote-protocol specific variables such as\n\ | |
5455 | the packets being used", | |
cff3e48b | 5456 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5457 | 0/*allow-unknown*/, &showlist); |
5458 | ||
c5aa993b | 5459 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5460 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5461 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5462 | &cmdlist); |
5463 | ||
5464 | add_cmd ("packet", class_maintenance, packet_command, | |
5465 | "Send an arbitrary packet to a remote target.\n\ | |
5466 | maintenance packet TEXT\n\ | |
5467 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5468 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5469 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5470 | terminating `#' character and checksum.", | |
5471 | &maintenancelist); | |
5472 | ||
c5aa993b | 5473 | add_show_from_set |
c906108c | 5474 | (add_set_cmd ("remotetimeout", no_class, |
c5aa993b | 5475 | var_integer, (char *) &remote_timeout, |
c906108c SS |
5476 | "Set timeout value for remote read.\n", |
5477 | &setlist), | |
5478 | &showlist); | |
5479 | ||
c5aa993b | 5480 | add_show_from_set |
c906108c | 5481 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5482 | var_boolean, (char *) &remote_break, |
c906108c SS |
5483 | "Set whether to send break if interrupted.\n", |
5484 | &setlist), | |
5485 | &showlist); | |
5486 | ||
11cf8741 JM |
5487 | /* Install commands for configuring memory read/write packets. */ |
5488 | ||
5489 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5490 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5491 | &setlist); | |
5492 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5493 | "Show the maximum number of bytes per memory write packet (deprecated).\n", | |
5494 | &showlist); | |
5495 | add_cmd ("memory-write-packet-size", no_class, | |
5496 | set_memory_write_packet_size, | |
5497 | "Set the maximum number of bytes per memory-write packet.\n" | |
5498 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5499 | "default packet size. The actual limit is further reduced\n" | |
5500 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5501 | "further restriction and ``limit'' to enable that restriction\n", | |
5502 | &remote_set_cmdlist); | |
5503 | add_cmd ("memory-read-packet-size", no_class, | |
5504 | set_memory_read_packet_size, | |
5505 | "Set the maximum number of bytes per memory-read packet.\n" | |
5506 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5507 | "default packet size. The actual limit is further reduced\n" | |
5508 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5509 | "further restriction and ``limit'' to enable that restriction\n", | |
5510 | &remote_set_cmdlist); | |
5511 | add_cmd ("memory-write-packet-size", no_class, | |
5512 | show_memory_write_packet_size, | |
5513 | "Show the maximum number of bytes per memory-write packet.\n", | |
5514 | &remote_show_cmdlist); | |
5515 | add_cmd ("memory-read-packet-size", no_class, | |
5516 | show_memory_read_packet_size, | |
5517 | "Show the maximum number of bytes per memory-read packet.\n", | |
5518 | &remote_show_cmdlist); | |
c906108c | 5519 | |
c5aa993b | 5520 | add_show_from_set |
c906108c | 5521 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5522 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5523 | "Set the maximum size of the address (in bits) \ |
5524 | in a memory packet.\n", | |
5525 | &setlist), | |
c5aa993b | 5526 | &showlist); |
c906108c | 5527 | |
96baa820 JM |
5528 | add_packet_config_cmd (&remote_protocol_binary_download, |
5529 | "X", "binary-download", | |
5530 | set_remote_protocol_binary_download_cmd, | |
5531 | show_remote_protocol_binary_download_cmd, | |
5532 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5533 | #if 0 | |
5534 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5535 | compatibility. */ | |
c5aa993b | 5536 | add_show_from_set |
b83266a0 SS |
5537 | (add_set_cmd ("remotebinarydownload", no_class, |
5538 | var_boolean, (char *) &remote_binary_download, | |
5539 | "Set binary downloads.\n", &setlist), | |
5540 | &showlist); | |
96baa820 | 5541 | #endif |
0f71a2f6 JM |
5542 | |
5543 | add_info ("remote-process", remote_info_process, | |
5544 | "Query the remote system for process info."); | |
5545 | ||
5a2468f5 JM |
5546 | add_packet_config_cmd (&remote_protocol_P, "P", "set-register", |
5547 | set_remote_protocol_P_packet_cmd, | |
5548 | show_remote_protocol_P_packet_cmd, | |
5549 | &remote_set_cmdlist, &remote_show_cmdlist); | |
96baa820 JM |
5550 | |
5551 | add_packet_config_cmd (&remote_protocol_Z, "Z", "breakpoint", | |
5552 | set_remote_protocol_Z_packet_cmd, | |
5553 | show_remote_protocol_Z_packet_cmd, | |
5554 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 5555 | } |