Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
d9fcf2fb | 2 | Copyright 1988, 1991-2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b JM |
4 | This file is part of GDB. |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 20 | |
96baa820 | 21 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 22 | |
c906108c SS |
23 | #include "defs.h" |
24 | #include "gdb_string.h" | |
25 | #include <ctype.h> | |
26 | #include <fcntl.h> | |
27 | #include "frame.h" | |
28 | #include "inferior.h" | |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "target.h" | |
03f2053f | 32 | #include "gdb_wait.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
c906108c SS |
39 | |
40 | #include "dcache.h" | |
41 | ||
7a292a7a | 42 | #include <ctype.h> |
9846de1b | 43 | #include <sys/time.h> |
c906108c SS |
44 | #ifdef USG |
45 | #include <sys/types.h> | |
46 | #endif | |
47 | ||
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
55 | /* Prototypes for local functions */ | |
6426a772 JM |
56 | static void cleanup_sigint_signal_handler (void *dummy); |
57 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 58 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 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 | ||
c2d11a7d | 115 | static void remote_send (char *buf, long sizeof_buf); |
c906108c SS |
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 | ||
c2d11a7d | 142 | static long read_frame (char *buf, long sizeof_buf); |
c906108c SS |
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 | ||
6426a772 JM |
248 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
249 | ``forever'' still use the normal timeout mechanism. This is | |
250 | currently used by the ASYNC code to guarentee that target reads | |
251 | during the initial connect always time-out. Once getpkt has been | |
252 | modified to return a timeout indication and, in turn | |
253 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
254 | this can go away. */ | |
255 | static int wait_forever_enabled_p = 1; | |
256 | ||
257 | ||
c906108c SS |
258 | /* This variable chooses whether to send a ^C or a break when the user |
259 | requests program interruption. Although ^C is usually what remote | |
260 | systems expect, and that is the default here, sometimes a break is | |
261 | preferable instead. */ | |
262 | ||
263 | static int remote_break; | |
264 | ||
c906108c SS |
265 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
266 | remote_open knows that we don't have a file open when the program | |
267 | starts. */ | |
268 | static serial_t remote_desc = NULL; | |
269 | ||
0f71a2f6 JM |
270 | /* This is set by the target (thru the 'S' message) |
271 | to denote that the target is in kernel mode. */ | |
272 | static int cisco_kernel_mode = 0; | |
273 | ||
c906108c SS |
274 | /* This variable sets the number of bits in an address that are to be |
275 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
276 | leading zeros, the entire address would be sent. This variable | |
277 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
278 | initial implementation of remote.c restricted the address sent in | |
279 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
280 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
281 | address was never sent. Since fixing this bug may cause a break in | |
282 | some remote targets this variable is principly provided to | |
283 | facilitate backward compatibility. */ | |
284 | ||
285 | static int remote_address_size; | |
286 | ||
6426a772 JM |
287 | /* Tempoary to track who currently owns the terminal. See |
288 | target_async_terminal_* for more details. */ | |
289 | ||
290 | static int remote_async_terminal_ours_p; | |
291 | ||
11cf8741 JM |
292 | \f |
293 | /* This is the size (in chars) of the first response to the ``g'' | |
294 | packet. It is used as a heuristic when determining the maximum | |
295 | size of memory-read and memory-write packets. A target will | |
296 | typically only reserve a buffer large enough to hold the ``g'' | |
297 | packet. The size does not include packet overhead (headers and | |
298 | trailers). */ | |
299 | ||
300 | static long actual_register_packet_size; | |
301 | ||
302 | /* This is the maximum size (in chars) of a non read/write packet. It | |
303 | is also used as a cap on the size of read/write packets. */ | |
304 | ||
305 | static long remote_packet_size; | |
306 | /* compatibility. */ | |
307 | #define PBUFSIZ (remote_packet_size) | |
308 | ||
309 | /* User configurable variables for the number of characters in a | |
310 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
311 | default. Some targets need smaller values (fifo overruns, et.al.) | |
312 | and some users need larger values (speed up transfers). The | |
313 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
314 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
315 | negative - a hard limit). */ | |
316 | ||
317 | struct memory_packet_config | |
318 | { | |
319 | char *name; | |
320 | long size; | |
321 | int fixed_p; | |
322 | }; | |
323 | ||
324 | /* Compute the current size of a read/write packet. Since this makes | |
325 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
326 | ||
327 | static long | |
328 | get_memory_packet_size (struct memory_packet_config *config) | |
329 | { | |
330 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
331 | law?) that some hosts don't cope very well with large alloca() | |
332 | calls. Eventually the alloca() code will be replaced by calls to | |
333 | xmalloc() and make_cleanups() allowing this restriction to either | |
334 | be lifted or removed. */ | |
335 | #ifndef MAX_REMOTE_PACKET_SIZE | |
336 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
337 | #endif | |
338 | /* NOTE: 16 is just chosen at random. */ | |
339 | #ifndef MIN_REMOTE_PACKET_SIZE | |
340 | #define MIN_REMOTE_PACKET_SIZE 16 | |
341 | #endif | |
342 | long what_they_get; | |
343 | if (config->fixed_p) | |
344 | { | |
345 | if (config->size <= 0) | |
346 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
347 | else | |
348 | what_they_get = config->size; | |
349 | } | |
350 | else | |
351 | { | |
352 | what_they_get = remote_packet_size; | |
353 | /* Limit the packet to the size specified by the user. */ | |
354 | if (config->size > 0 | |
355 | && what_they_get > config->size) | |
356 | what_they_get = config->size; | |
357 | /* Limit it to the size of the targets ``g'' response. */ | |
358 | if (actual_register_packet_size > 0 | |
359 | && what_they_get > actual_register_packet_size) | |
360 | what_they_get = actual_register_packet_size; | |
361 | } | |
362 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
363 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
364 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
365 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
366 | return what_they_get; | |
367 | } | |
368 | ||
369 | /* Update the size of a read/write packet. If they user wants | |
370 | something really big then do a sanity check. */ | |
371 | ||
372 | static void | |
373 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
374 | { | |
375 | int fixed_p = config->fixed_p; | |
376 | long size = config->size; | |
377 | if (args == NULL) | |
378 | error ("Argument required (integer, `fixed' or `limited')."); | |
379 | else if (strcmp (args, "hard") == 0 | |
380 | || strcmp (args, "fixed") == 0) | |
381 | fixed_p = 1; | |
382 | else if (strcmp (args, "soft") == 0 | |
383 | || strcmp (args, "limit") == 0) | |
384 | fixed_p = 0; | |
385 | else | |
386 | { | |
387 | char *end; | |
388 | size = strtoul (args, &end, 0); | |
389 | if (args == end) | |
390 | error ("Invalid %s (bad syntax).", config->name); | |
391 | #if 0 | |
392 | /* Instead of explicitly capping the size of a packet to | |
393 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
394 | instead allowed to set the size to something arbitrarily | |
395 | large. */ | |
396 | if (size > MAX_REMOTE_PACKET_SIZE) | |
397 | error ("Invalid %s (too large).", config->name); | |
398 | #endif | |
399 | } | |
400 | /* Extra checks? */ | |
401 | if (fixed_p && !config->fixed_p) | |
402 | { | |
403 | if (! query ("The target may not be able to correctly handle a %s\n" | |
404 | "of %ld bytes. Change the packet size? ", | |
405 | config->name, size)) | |
406 | error ("Packet size not changed."); | |
407 | } | |
408 | /* Update the config. */ | |
409 | config->fixed_p = fixed_p; | |
410 | config->size = size; | |
411 | } | |
412 | ||
413 | static void | |
414 | show_memory_packet_size (struct memory_packet_config *config) | |
415 | { | |
416 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
417 | if (config->fixed_p) | |
418 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
419 | get_memory_packet_size (config)); | |
420 | else | |
421 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
422 | get_memory_packet_size (config)); | |
423 | } | |
424 | ||
425 | static struct memory_packet_config memory_write_packet_config = | |
426 | { | |
427 | "memory-write-packet-size", | |
428 | }; | |
429 | ||
430 | static void | |
431 | set_memory_write_packet_size (char *args, int from_tty) | |
432 | { | |
433 | set_memory_packet_size (args, &memory_write_packet_config); | |
434 | } | |
435 | ||
436 | static void | |
437 | show_memory_write_packet_size (char *args, int from_tty) | |
438 | { | |
439 | show_memory_packet_size (&memory_write_packet_config); | |
440 | } | |
441 | ||
442 | static long | |
443 | get_memory_write_packet_size (void) | |
444 | { | |
445 | return get_memory_packet_size (&memory_write_packet_config); | |
446 | } | |
447 | ||
448 | static struct memory_packet_config memory_read_packet_config = | |
449 | { | |
450 | "memory-read-packet-size", | |
451 | }; | |
452 | ||
453 | static void | |
454 | set_memory_read_packet_size (char *args, int from_tty) | |
455 | { | |
456 | set_memory_packet_size (args, &memory_read_packet_config); | |
457 | } | |
458 | ||
459 | static void | |
460 | show_memory_read_packet_size (char *args, int from_tty) | |
461 | { | |
462 | show_memory_packet_size (&memory_read_packet_config); | |
463 | } | |
464 | ||
465 | static long | |
466 | get_memory_read_packet_size (void) | |
467 | { | |
468 | long size = get_memory_packet_size (&memory_read_packet_config); | |
469 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
470 | extra buffer size argument before the memory read size can be | |
471 | increased beyond PBUFSIZ. */ | |
472 | if (size > PBUFSIZ) | |
473 | size = PBUFSIZ; | |
474 | return size; | |
475 | } | |
476 | ||
477 | /* Register packet size initialization. Since the bounds change when | |
478 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
479 | be multi-arched. */ | |
480 | ||
481 | static void | |
482 | register_remote_packet_sizes (void) | |
483 | { | |
484 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
485 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
486 | } | |
487 | ||
488 | static void | |
489 | build_remote_packet_sizes (void) | |
490 | { | |
c2d11a7d JM |
491 | /* Default maximum number of characters in a packet body. Many |
492 | remote stubs have a hardwired buffer size of 400 bytes | |
493 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
494 | as the maximum packet-size to ensure that the packet and an extra | |
495 | NUL character can always fit in the buffer. This stops GDB | |
496 | trashing stubs that try to squeeze an extra NUL into what is | |
497 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
498 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
499 | /* Should REGISTER_BYTES needs more space than the default, adjust |
500 | the size accordingly. Remember that each byte is encoded as two | |
501 | characters. 32 is the overhead for the packet header / | |
502 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
503 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
504 | little. */ | |
505 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
506 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
507 | ||
508 | /* This one is filled in when a ``g'' packet is received. */ | |
509 | actual_register_packet_size = 0; | |
510 | } | |
511 | \f | |
5a2468f5 JM |
512 | /* Generic configuration support for packets the stub optionally |
513 | supports. Allows the user to specify the use of the packet as well | |
514 | as allowing GDB to auto-detect support in the remote stub. */ | |
515 | ||
516 | enum packet_support | |
517 | { | |
518 | PACKET_SUPPORT_UNKNOWN = 0, | |
519 | PACKET_ENABLE, | |
520 | PACKET_DISABLE | |
521 | }; | |
522 | ||
523 | enum packet_detect | |
524 | { | |
525 | PACKET_AUTO_DETECT = 0, | |
526 | PACKET_MANUAL_DETECT | |
527 | }; | |
528 | ||
529 | struct packet_config | |
530 | { | |
531 | char *state; | |
532 | char *name; | |
533 | char *title; | |
534 | enum packet_detect detect; | |
535 | enum packet_support support; | |
536 | }; | |
537 | ||
538 | static char packet_support_auto[] = "auto"; | |
539 | static char packet_enable[] = "enable"; | |
540 | static char packet_disable[] = "disable"; | |
541 | static char *packet_support_enums[] = | |
542 | { | |
543 | packet_support_auto, | |
544 | packet_enable, | |
545 | packet_disable, | |
546 | 0, | |
547 | }; | |
548 | ||
549 | static void | |
550 | set_packet_config_cmd (config, c) | |
551 | struct packet_config *config; | |
552 | struct cmd_list_element *c; | |
553 | { | |
554 | if (config->state == packet_enable) | |
555 | { | |
556 | config->detect = PACKET_MANUAL_DETECT; | |
557 | config->support = PACKET_ENABLE; | |
558 | } | |
559 | else if (config->state == packet_disable) | |
560 | { | |
561 | config->detect = PACKET_MANUAL_DETECT; | |
562 | config->support = PACKET_DISABLE; | |
563 | } | |
564 | else if (config->state == packet_support_auto) | |
565 | { | |
566 | config->detect = PACKET_AUTO_DETECT; | |
567 | config->support = PACKET_SUPPORT_UNKNOWN; | |
568 | } | |
569 | else | |
96baa820 | 570 | internal_error ("Bad enum value"); |
5a2468f5 JM |
571 | } |
572 | ||
573 | static void | |
574 | show_packet_config_cmd (config) | |
575 | struct packet_config *config; | |
576 | { | |
577 | char *support = "internal-error"; | |
578 | switch (config->support) | |
579 | { | |
580 | case PACKET_ENABLE: | |
581 | support = "enabled"; | |
582 | break; | |
583 | case PACKET_DISABLE: | |
584 | support = "disabled"; | |
585 | break; | |
586 | case PACKET_SUPPORT_UNKNOWN: | |
587 | support = "unknown"; | |
588 | break; | |
589 | } | |
590 | switch (config->detect) | |
591 | { | |
592 | case PACKET_AUTO_DETECT: | |
593 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", | |
594 | config->name, config->title, support); | |
595 | break; | |
596 | case PACKET_MANUAL_DETECT: | |
597 | printf_filtered ("Support for remote protocol `%s' (%s) is currently %s.\n", | |
598 | config->name, config->title, support); | |
599 | } | |
600 | } | |
601 | ||
602 | static void | |
603 | add_packet_config_cmd (config, name, title, set_func, show_func, | |
604 | setlist, showlist) | |
605 | struct packet_config *config; | |
606 | char *name; | |
607 | char *title; | |
608 | void (*set_func) PARAMS ((char *args, int from_tty, | |
609 | struct cmd_list_element * c)); | |
610 | void (*show_func) PARAMS ((char *name, int from_tty)); | |
611 | struct cmd_list_element **setlist; | |
612 | struct cmd_list_element **showlist; | |
613 | { | |
614 | struct cmd_list_element *c; | |
615 | char *set_doc; | |
616 | char *show_doc; | |
617 | char *full_name; | |
618 | config->name = name; | |
619 | config->title = title; | |
620 | asprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", | |
621 | name, title); | |
622 | asprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
623 | name, title); | |
624 | asprintf (&full_name, "%s-packet", name); | |
625 | c = add_set_enum_cmd (full_name, | |
626 | class_obscure, packet_support_enums, | |
627 | (char *) &config->state, | |
628 | set_doc, setlist); | |
629 | c->function.sfunc = set_func; | |
630 | add_cmd (full_name, class_obscure, show_func, show_doc, showlist); | |
631 | } | |
632 | ||
633 | static void | |
634 | init_packet_config (config) | |
635 | struct packet_config *config; | |
636 | { | |
637 | switch (config->detect) | |
638 | { | |
639 | case PACKET_AUTO_DETECT: | |
640 | config->support = PACKET_SUPPORT_UNKNOWN; | |
641 | break; | |
642 | case PACKET_MANUAL_DETECT: | |
643 | /* let the user beware */ | |
644 | break; | |
645 | } | |
646 | } | |
647 | ||
648 | /* Should we try the 'P' (set register) request? */ | |
649 | ||
650 | static struct packet_config remote_protocol_P; | |
651 | ||
652 | static void | |
653 | set_remote_protocol_P_packet_cmd (args, from_tty, c) | |
654 | char *args; | |
655 | int from_tty; | |
656 | struct cmd_list_element *c; | |
657 | { | |
658 | set_packet_config_cmd (&remote_protocol_P, c); | |
659 | } | |
660 | ||
661 | static void | |
662 | show_remote_protocol_P_packet_cmd (args, from_tty) | |
663 | char *args; | |
664 | int from_tty; | |
665 | { | |
666 | show_packet_config_cmd (&remote_protocol_P); | |
667 | } | |
668 | ||
96baa820 JM |
669 | /* Should we try the 'Z' (set breakpoint) request? */ |
670 | ||
671 | static struct packet_config remote_protocol_Z; | |
672 | ||
673 | static void | |
674 | set_remote_protocol_Z_packet_cmd (args, from_tty, c) | |
675 | char *args; | |
676 | int from_tty; | |
677 | struct cmd_list_element *c; | |
678 | { | |
679 | set_packet_config_cmd (&remote_protocol_Z, c); | |
680 | } | |
681 | ||
682 | static void | |
683 | show_remote_protocol_Z_packet_cmd (args, from_tty) | |
684 | char *args; | |
685 | int from_tty; | |
686 | { | |
687 | show_packet_config_cmd (&remote_protocol_Z); | |
688 | } | |
689 | ||
690 | /* Should we try the 'X' (remote binary download) packet? | |
691 | ||
692 | This variable (available to the user via "set remote X-packet") | |
693 | dictates whether downloads are sent in binary (via the 'X' packet). | |
694 | We assume that the stub can, and attempt to do it. This will be | |
695 | cleared if the stub does not understand it. This switch is still | |
696 | needed, though in cases when the packet is supported in the stub, | |
697 | but the connection does not allow it (i.e., 7-bit serial connection | |
698 | only). */ | |
699 | ||
700 | static struct packet_config remote_protocol_binary_download; | |
701 | ||
702 | static void | |
703 | set_remote_protocol_binary_download_cmd (char *args, | |
704 | int from_tty, | |
705 | struct cmd_list_element *c) | |
706 | { | |
707 | set_packet_config_cmd (&remote_protocol_binary_download, c); | |
708 | } | |
709 | ||
710 | static void | |
711 | show_remote_protocol_binary_download_cmd (char *args, | |
712 | int from_tty) | |
713 | { | |
714 | show_packet_config_cmd (&remote_protocol_binary_download); | |
715 | } | |
716 | ||
c906108c | 717 | |
43ff13b4 JM |
718 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
719 | PTR sigint_remote_twice_token; | |
720 | PTR sigint_remote_token; | |
721 | ||
c906108c SS |
722 | /* These are pointers to hook functions that may be set in order to |
723 | modify resume/wait behavior for a particular architecture. */ | |
724 | ||
725 | void (*target_resume_hook) PARAMS ((void)); | |
726 | void (*target_wait_loop_hook) PARAMS ((void)); | |
c906108c SS |
727 | \f |
728 | ||
c5aa993b | 729 | |
c906108c SS |
730 | /* These are the threads which we last sent to the remote system. |
731 | -1 for all or -2 for not sent yet. */ | |
732 | static int general_thread; | |
cce74817 | 733 | static int continue_thread; |
c906108c SS |
734 | |
735 | /* Call this function as a result of | |
736 | 1) A halt indication (T packet) containing a thread id | |
737 | 2) A direct query of currthread | |
738 | 3) Successful execution of set thread | |
739 | */ | |
740 | ||
741 | static void | |
742 | record_currthread (currthread) | |
743 | int currthread; | |
744 | { | |
c906108c | 745 | general_thread = currthread; |
cce74817 | 746 | |
c906108c SS |
747 | /* If this is a new thread, add it to GDB's thread list. |
748 | If we leave it up to WFI to do this, bad things will happen. */ | |
749 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
750 | { |
751 | add_thread (currthread); | |
8b93c638 JM |
752 | #ifdef UI_OUT |
753 | ui_out_text (uiout, "[New "); | |
754 | ui_out_text (uiout, target_pid_to_str (currthread)); | |
755 | ui_out_text (uiout, "]\n"); | |
756 | #else | |
0f71a2f6 | 757 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); |
8b93c638 | 758 | #endif |
0f71a2f6 | 759 | } |
c906108c SS |
760 | } |
761 | ||
762 | #define MAGIC_NULL_PID 42000 | |
763 | ||
764 | static void | |
765 | set_thread (th, gen) | |
766 | int th; | |
767 | int gen; | |
768 | { | |
085dd6e6 | 769 | char *buf = alloca (PBUFSIZ); |
cce74817 | 770 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
771 | |
772 | if (state == th) | |
773 | return; | |
774 | ||
775 | buf[0] = 'H'; | |
776 | buf[1] = gen ? 'g' : 'c'; | |
777 | if (th == MAGIC_NULL_PID) | |
778 | { | |
779 | buf[2] = '0'; | |
780 | buf[3] = '\0'; | |
781 | } | |
782 | else if (th < 0) | |
783 | sprintf (&buf[2], "-%x", -th); | |
784 | else | |
785 | sprintf (&buf[2], "%x", th); | |
786 | putpkt (buf); | |
c2d11a7d | 787 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 788 | if (gen) |
c5aa993b | 789 | general_thread = th; |
c906108c | 790 | else |
cce74817 | 791 | continue_thread = th; |
c906108c SS |
792 | } |
793 | \f | |
794 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
795 | ||
796 | static int | |
cce74817 JM |
797 | remote_thread_alive (tid) |
798 | int tid; | |
c906108c | 799 | { |
cce74817 | 800 | char buf[16]; |
c906108c | 801 | |
cce74817 JM |
802 | if (tid < 0) |
803 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 804 | else |
cce74817 | 805 | sprintf (buf, "T%08x", tid); |
c906108c | 806 | putpkt (buf); |
c2d11a7d | 807 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
808 | return (buf[0] == 'O' && buf[1] == 'K'); |
809 | } | |
810 | ||
811 | /* About these extended threadlist and threadinfo packets. They are | |
812 | variable length packets but, the fields within them are often fixed | |
813 | length. They are redundent enough to send over UDP as is the | |
814 | remote protocol in general. There is a matching unit test module | |
815 | in libstub. */ | |
816 | ||
cce74817 JM |
817 | #define OPAQUETHREADBYTES 8 |
818 | ||
819 | /* a 64 bit opaque identifier */ | |
820 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
821 | ||
822 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
823 | protocol encoding, and remote.c. it is not particularly changable */ | |
824 | ||
825 | /* Right now, the internal structure is int. We want it to be bigger. | |
826 | Plan to fix this. | |
c5aa993b | 827 | */ |
cce74817 | 828 | |
c5aa993b | 829 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 JM |
830 | |
831 | /* gdb_ext_thread_info is an internal GDB data structure which is | |
832 | equivalint to the reply of the remote threadinfo packet */ | |
833 | ||
834 | struct gdb_ext_thread_info | |
c5aa993b JM |
835 | { |
836 | threadref threadid; /* External form of thread reference */ | |
837 | int active; /* Has state interesting to GDB? , regs, stack */ | |
838 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
839 | char shortname[32]; /* To be used to name threads */ | |
840 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
841 | }; | |
cce74817 JM |
842 | |
843 | /* The volume of remote transfers can be limited by submitting | |
844 | a mask containing bits specifying the desired information. | |
845 | Use a union of these values as the 'selection' parameter to | |
846 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 847 | */ |
cce74817 JM |
848 | |
849 | #define TAG_THREADID 1 | |
850 | #define TAG_EXISTS 2 | |
851 | #define TAG_DISPLAY 4 | |
852 | #define TAG_THREADNAME 8 | |
c5aa993b | 853 | #define TAG_MOREDISPLAY 16 |
cce74817 | 854 | |
c906108c SS |
855 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
856 | ||
cce74817 JM |
857 | char *unpack_varlen_hex PARAMS ((char *buff, int *result)); |
858 | ||
859 | static char *unpack_nibble PARAMS ((char *buf, int *val)); | |
860 | ||
861 | static char *pack_nibble PARAMS ((char *buf, int nibble)); | |
862 | ||
c5aa993b | 863 | static char *pack_hex_byte PARAMS ((char *pkt, int /*unsigned char */ byte)); |
cce74817 JM |
864 | |
865 | static char *unpack_byte PARAMS ((char *buf, int *value)); | |
866 | ||
867 | static char *pack_int PARAMS ((char *buf, int value)); | |
868 | ||
869 | static char *unpack_int PARAMS ((char *buf, int *value)); | |
870 | ||
871 | static char *unpack_string PARAMS ((char *src, char *dest, int length)); | |
872 | ||
c5aa993b | 873 | static char *pack_threadid PARAMS ((char *pkt, threadref * id)); |
cce74817 | 874 | |
c5aa993b | 875 | static char *unpack_threadid PARAMS ((char *inbuf, threadref * id)); |
cce74817 | 876 | |
c5aa993b | 877 | void int_to_threadref PARAMS ((threadref * id, int value)); |
cce74817 | 878 | |
c5aa993b | 879 | static int threadref_to_int PARAMS ((threadref * ref)); |
cce74817 | 880 | |
c5aa993b | 881 | static void copy_threadref PARAMS ((threadref * dest, threadref * src)); |
cce74817 | 882 | |
c5aa993b | 883 | static int threadmatch PARAMS ((threadref * dest, threadref * src)); |
cce74817 JM |
884 | |
885 | static char *pack_threadinfo_request PARAMS ((char *pkt, int mode, | |
c5aa993b | 886 | threadref * id)); |
cce74817 JM |
887 | |
888 | static int remote_unpack_thread_info_response PARAMS ((char *pkt, | |
c5aa993b JM |
889 | threadref * expectedref, |
890 | struct gdb_ext_thread_info * info)); | |
cce74817 JM |
891 | |
892 | ||
c5aa993b JM |
893 | static int remote_get_threadinfo PARAMS ((threadref * threadid, |
894 | int fieldset, /*TAG mask */ | |
895 | struct gdb_ext_thread_info * info)); | |
cce74817 | 896 | |
c5aa993b | 897 | static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref * ref, |
cce74817 | 898 | int selection, |
c5aa993b | 899 | struct gdb_ext_thread_info * info)); |
cce74817 JM |
900 | |
901 | static char *pack_threadlist_request PARAMS ((char *pkt, int startflag, | |
902 | int threadcount, | |
c5aa993b | 903 | threadref * nextthread)); |
cce74817 JM |
904 | |
905 | static int parse_threadlist_response PARAMS ((char *pkt, | |
906 | int result_limit, | |
c5aa993b JM |
907 | threadref * original_echo, |
908 | threadref * resultlist, | |
cce74817 JM |
909 | int *doneflag)); |
910 | ||
911 | static int remote_get_threadlist PARAMS ((int startflag, | |
c5aa993b | 912 | threadref * nextthread, |
cce74817 JM |
913 | int result_limit, |
914 | int *done, | |
915 | int *result_count, | |
c5aa993b | 916 | threadref * threadlist)); |
cce74817 | 917 | |
c5aa993b | 918 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 JM |
919 | |
920 | static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction, | |
c5aa993b | 921 | void *context, int looplimit)); |
cce74817 | 922 | |
c5aa993b | 923 | static int remote_newthread_step PARAMS ((threadref * ref, void *context)); |
cce74817 | 924 | |
c906108c SS |
925 | /* encode 64 bits in 16 chars of hex */ |
926 | ||
927 | static const char hexchars[] = "0123456789abcdef"; | |
928 | ||
929 | static int | |
930 | ishex (ch, val) | |
931 | int ch; | |
932 | int *val; | |
933 | { | |
934 | if ((ch >= 'a') && (ch <= 'f')) | |
935 | { | |
936 | *val = ch - 'a' + 10; | |
937 | return 1; | |
938 | } | |
939 | if ((ch >= 'A') && (ch <= 'F')) | |
940 | { | |
941 | *val = ch - 'A' + 10; | |
942 | return 1; | |
943 | } | |
944 | if ((ch >= '0') && (ch <= '9')) | |
945 | { | |
946 | *val = ch - '0'; | |
947 | return 1; | |
948 | } | |
949 | return 0; | |
950 | } | |
951 | ||
952 | static int | |
953 | stubhex (ch) | |
954 | int ch; | |
955 | { | |
956 | if (ch >= 'a' && ch <= 'f') | |
957 | return ch - 'a' + 10; | |
958 | if (ch >= '0' && ch <= '9') | |
959 | return ch - '0'; | |
960 | if (ch >= 'A' && ch <= 'F') | |
961 | return ch - 'A' + 10; | |
962 | return -1; | |
963 | } | |
964 | ||
965 | static int | |
966 | stub_unpack_int (buff, fieldlength) | |
967 | char *buff; | |
968 | int fieldlength; | |
969 | { | |
970 | int nibble; | |
971 | int retval = 0; | |
972 | ||
973 | while (fieldlength) | |
974 | { | |
975 | nibble = stubhex (*buff++); | |
976 | retval |= nibble; | |
977 | fieldlength--; | |
978 | if (fieldlength) | |
979 | retval = retval << 4; | |
980 | } | |
981 | return retval; | |
982 | } | |
983 | ||
984 | char * | |
985 | unpack_varlen_hex (buff, result) | |
986 | char *buff; /* packet to parse */ | |
987 | int *result; | |
988 | { | |
989 | int nibble; | |
990 | int retval = 0; | |
991 | ||
992 | while (ishex (*buff, &nibble)) | |
993 | { | |
994 | buff++; | |
995 | retval = retval << 4; | |
996 | retval |= nibble & 0x0f; | |
997 | } | |
998 | *result = retval; | |
999 | return buff; | |
1000 | } | |
1001 | ||
1002 | static char * | |
1003 | unpack_nibble (buf, val) | |
1004 | char *buf; | |
1005 | int *val; | |
1006 | { | |
1007 | ishex (*buf++, val); | |
1008 | return buf; | |
1009 | } | |
1010 | ||
1011 | static char * | |
1012 | pack_nibble (buf, nibble) | |
1013 | char *buf; | |
1014 | int nibble; | |
1015 | { | |
1016 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1017 | return buf; | |
1018 | } | |
1019 | ||
1020 | static char * | |
1021 | pack_hex_byte (pkt, byte) | |
1022 | char *pkt; | |
1023 | int byte; | |
1024 | { | |
1025 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1026 | *pkt++ = hexchars[(byte & 0xf)]; | |
1027 | return pkt; | |
1028 | } | |
1029 | ||
1030 | static char * | |
1031 | unpack_byte (buf, value) | |
1032 | char *buf; | |
1033 | int *value; | |
1034 | { | |
1035 | *value = stub_unpack_int (buf, 2); | |
1036 | return buf + 2; | |
1037 | } | |
1038 | ||
1039 | static char * | |
1040 | pack_int (buf, value) | |
1041 | char *buf; | |
1042 | int value; | |
1043 | { | |
1044 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1045 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1046 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1047 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1048 | return buf; | |
1049 | } | |
1050 | ||
1051 | static char * | |
1052 | unpack_int (buf, value) | |
1053 | char *buf; | |
1054 | int *value; | |
1055 | { | |
1056 | *value = stub_unpack_int (buf, 8); | |
1057 | return buf + 8; | |
1058 | } | |
1059 | ||
c5aa993b | 1060 | #if 0 /* currently unused, uncomment when needed */ |
c906108c SS |
1061 | static char *pack_string PARAMS ((char *pkt, char *string)); |
1062 | ||
1063 | static char * | |
1064 | pack_string (pkt, string) | |
1065 | char *pkt; | |
1066 | char *string; | |
1067 | { | |
1068 | char ch; | |
1069 | int len; | |
1070 | ||
1071 | len = strlen (string); | |
1072 | if (len > 200) | |
1073 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1074 | pkt = pack_hex_byte (pkt, len); | |
1075 | while (len-- > 0) | |
1076 | { | |
1077 | ch = *string++; | |
1078 | if ((ch == '\0') || (ch == '#')) | |
1079 | ch = '*'; /* Protect encapsulation */ | |
1080 | *pkt++ = ch; | |
1081 | } | |
1082 | return pkt; | |
1083 | } | |
1084 | #endif /* 0 (unused) */ | |
1085 | ||
1086 | static char * | |
1087 | unpack_string (src, dest, length) | |
1088 | char *src; | |
1089 | char *dest; | |
1090 | int length; | |
1091 | { | |
1092 | while (length--) | |
1093 | *dest++ = *src++; | |
1094 | *dest = '\0'; | |
1095 | return src; | |
1096 | } | |
1097 | ||
1098 | static char * | |
1099 | pack_threadid (pkt, id) | |
1100 | char *pkt; | |
1101 | threadref *id; | |
1102 | { | |
1103 | char *limit; | |
1104 | unsigned char *altid; | |
1105 | ||
1106 | altid = (unsigned char *) id; | |
1107 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1108 | while (pkt < limit) | |
1109 | pkt = pack_hex_byte (pkt, *altid++); | |
1110 | return pkt; | |
1111 | } | |
1112 | ||
1113 | ||
1114 | static char * | |
1115 | unpack_threadid (inbuf, id) | |
1116 | char *inbuf; | |
1117 | threadref *id; | |
1118 | { | |
1119 | char *altref; | |
1120 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1121 | int x, y; | |
1122 | ||
1123 | altref = (char *) id; | |
1124 | ||
1125 | while (inbuf < limit) | |
1126 | { | |
1127 | x = stubhex (*inbuf++); | |
1128 | y = stubhex (*inbuf++); | |
1129 | *altref++ = (x << 4) | y; | |
1130 | } | |
1131 | return inbuf; | |
1132 | } | |
1133 | ||
1134 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1135 | ints. This is due to a mismatch of specifications. We would like | |
1136 | to use 64bit thread references internally. This is an adapter | |
1137 | function. */ | |
1138 | ||
1139 | void | |
1140 | int_to_threadref (id, value) | |
1141 | threadref *id; | |
1142 | int value; | |
1143 | { | |
1144 | unsigned char *scan; | |
1145 | ||
1146 | scan = (unsigned char *) id; | |
1147 | { | |
1148 | int i = 4; | |
1149 | while (i--) | |
1150 | *scan++ = 0; | |
1151 | } | |
1152 | *scan++ = (value >> 24) & 0xff; | |
1153 | *scan++ = (value >> 16) & 0xff; | |
1154 | *scan++ = (value >> 8) & 0xff; | |
1155 | *scan++ = (value & 0xff); | |
1156 | } | |
1157 | ||
1158 | static int | |
1159 | threadref_to_int (ref) | |
1160 | threadref *ref; | |
1161 | { | |
1162 | int i, value = 0; | |
1163 | unsigned char *scan; | |
1164 | ||
1165 | scan = (char *) ref; | |
1166 | scan += 4; | |
1167 | i = 4; | |
1168 | while (i-- > 0) | |
1169 | value = (value << 8) | ((*scan++) & 0xff); | |
1170 | return value; | |
1171 | } | |
1172 | ||
1173 | static void | |
1174 | copy_threadref (dest, src) | |
1175 | threadref *dest; | |
1176 | threadref *src; | |
1177 | { | |
1178 | int i; | |
1179 | unsigned char *csrc, *cdest; | |
1180 | ||
1181 | csrc = (unsigned char *) src; | |
1182 | cdest = (unsigned char *) dest; | |
1183 | i = 8; | |
1184 | while (i--) | |
1185 | *cdest++ = *csrc++; | |
1186 | } | |
1187 | ||
1188 | static int | |
1189 | threadmatch (dest, src) | |
1190 | threadref *dest; | |
1191 | threadref *src; | |
1192 | { | |
1193 | /* things are broken right now, so just assume we got a match */ | |
1194 | #if 0 | |
1195 | unsigned char *srcp, *destp; | |
1196 | int i, result; | |
1197 | srcp = (char *) src; | |
1198 | destp = (char *) dest; | |
1199 | ||
1200 | result = 1; | |
1201 | while (i-- > 0) | |
1202 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1203 | return result; | |
1204 | #endif | |
1205 | return 1; | |
1206 | } | |
1207 | ||
1208 | /* | |
c5aa993b JM |
1209 | threadid:1, # always request threadid |
1210 | context_exists:2, | |
1211 | display:4, | |
1212 | unique_name:8, | |
1213 | more_display:16 | |
1214 | */ | |
c906108c SS |
1215 | |
1216 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1217 | ||
1218 | static char * | |
1219 | pack_threadinfo_request (pkt, mode, id) | |
1220 | char *pkt; | |
1221 | int mode; | |
1222 | threadref *id; | |
1223 | { | |
1224 | *pkt++ = 'q'; /* Info Query */ | |
1225 | *pkt++ = 'P'; /* process or thread info */ | |
1226 | pkt = pack_int (pkt, mode); /* mode */ | |
1227 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1228 | *pkt = '\0'; /* terminate */ | |
1229 | return pkt; | |
1230 | } | |
1231 | ||
1232 | /* These values tag the fields in a thread info response packet */ | |
1233 | /* Tagging the fields allows us to request specific fields and to | |
1234 | add more fields as time goes by */ | |
1235 | ||
c5aa993b JM |
1236 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1237 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1238 | fetch registers and its stack */ | |
1239 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1240 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1241 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1242 | the process */ | |
c906108c SS |
1243 | |
1244 | static int | |
1245 | remote_unpack_thread_info_response (pkt, expectedref, info) | |
1246 | char *pkt; | |
1247 | threadref *expectedref; | |
1248 | struct gdb_ext_thread_info *info; | |
1249 | { | |
1250 | int mask, length; | |
1251 | unsigned int tag; | |
1252 | threadref ref; | |
c5aa993b | 1253 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1254 | int retval = 1; |
1255 | ||
1256 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1257 | info->active = 0; | |
1258 | info->display[0] = '\0'; | |
1259 | info->shortname[0] = '\0'; | |
1260 | info->more_display[0] = '\0'; | |
1261 | ||
1262 | /* Assume the characters indicating the packet type have been stripped */ | |
1263 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1264 | pkt = unpack_threadid (pkt, &ref); | |
1265 | ||
1266 | if (mask == 0) | |
1267 | warning ("Incomplete response to threadinfo request\n"); | |
1268 | if (!threadmatch (&ref, expectedref)) | |
1269 | { /* This is an answer to a different request */ | |
1270 | warning ("ERROR RMT Thread info mismatch\n"); | |
1271 | return 0; | |
1272 | } | |
1273 | copy_threadref (&info->threadid, &ref); | |
1274 | ||
1275 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1276 | ||
c5aa993b | 1277 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1278 | { |
1279 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1280 | pkt = unpack_byte (pkt, &length); /* length */ | |
1281 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1282 | { | |
1283 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1284 | retval = 0; | |
1285 | break; | |
1286 | } | |
1287 | if (tag == TAG_THREADID) | |
1288 | { | |
1289 | if (length != 16) | |
1290 | { | |
1291 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1292 | retval = 0; | |
1293 | break; | |
1294 | } | |
1295 | pkt = unpack_threadid (pkt, &ref); | |
1296 | mask = mask & ~TAG_THREADID; | |
1297 | continue; | |
1298 | } | |
1299 | if (tag == TAG_EXISTS) | |
1300 | { | |
1301 | info->active = stub_unpack_int (pkt, length); | |
1302 | pkt += length; | |
1303 | mask = mask & ~(TAG_EXISTS); | |
1304 | if (length > 8) | |
1305 | { | |
1306 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1307 | retval = 0; | |
1308 | break; | |
1309 | } | |
1310 | continue; | |
1311 | } | |
1312 | if (tag == TAG_THREADNAME) | |
1313 | { | |
1314 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1315 | mask = mask & ~TAG_THREADNAME; | |
1316 | continue; | |
1317 | } | |
1318 | if (tag == TAG_DISPLAY) | |
1319 | { | |
1320 | pkt = unpack_string (pkt, &info->display[0], length); | |
1321 | mask = mask & ~TAG_DISPLAY; | |
1322 | continue; | |
1323 | } | |
1324 | if (tag == TAG_MOREDISPLAY) | |
1325 | { | |
1326 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1327 | mask = mask & ~TAG_MOREDISPLAY; | |
1328 | continue; | |
1329 | } | |
1330 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1331 | break; /* Not a tag we know about */ | |
1332 | } | |
1333 | return retval; | |
1334 | } | |
1335 | ||
1336 | static int | |
1337 | remote_get_threadinfo (threadid, fieldset, info) | |
1338 | threadref *threadid; | |
1339 | int fieldset; /* TAG mask */ | |
1340 | struct gdb_ext_thread_info *info; | |
1341 | { | |
1342 | int result; | |
085dd6e6 | 1343 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1344 | |
1345 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1346 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1347 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1348 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1349 | info); | |
1350 | return result; | |
1351 | } | |
1352 | ||
1353 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1354 | representation of a threadid. */ | |
1355 | ||
1356 | static int | |
1357 | adapt_remote_get_threadinfo (ref, selection, info) | |
1358 | gdb_threadref *ref; | |
1359 | int selection; | |
1360 | struct gdb_ext_thread_info *info; | |
1361 | { | |
1362 | threadref lclref; | |
1363 | ||
1364 | int_to_threadref (&lclref, *ref); | |
1365 | return remote_get_threadinfo (&lclref, selection, info); | |
1366 | } | |
1367 | ||
1368 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1369 | ||
1370 | static char * | |
1371 | pack_threadlist_request (pkt, startflag, threadcount, nextthread) | |
1372 | char *pkt; | |
1373 | int startflag; | |
1374 | int threadcount; | |
1375 | threadref *nextthread; | |
1376 | { | |
1377 | *pkt++ = 'q'; /* info query packet */ | |
1378 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1379 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1380 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1381 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1382 | *pkt = '\0'; | |
1383 | return pkt; | |
1384 | } | |
1385 | ||
1386 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1387 | ||
1388 | static int | |
1389 | parse_threadlist_response (pkt, result_limit, original_echo, resultlist, | |
1390 | doneflag) | |
1391 | char *pkt; | |
1392 | int result_limit; | |
1393 | threadref *original_echo; | |
1394 | threadref *resultlist; | |
1395 | int *doneflag; | |
1396 | { | |
1397 | char *limit; | |
1398 | int count, resultcount, done; | |
1399 | ||
1400 | resultcount = 0; | |
1401 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1402 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1403 | pkt = unpack_byte (pkt, &count); /* count field */ |
1404 | pkt = unpack_nibble (pkt, &done); | |
1405 | /* The first threadid is the argument threadid. */ | |
1406 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1407 | while ((count-- > 0) && (pkt < limit)) | |
1408 | { | |
1409 | pkt = unpack_threadid (pkt, resultlist++); | |
1410 | if (resultcount++ >= result_limit) | |
1411 | break; | |
1412 | } | |
1413 | if (doneflag) | |
1414 | *doneflag = done; | |
1415 | return resultcount; | |
1416 | } | |
1417 | ||
1418 | static int | |
1419 | remote_get_threadlist (startflag, nextthread, result_limit, | |
1420 | done, result_count, threadlist) | |
1421 | int startflag; | |
1422 | threadref *nextthread; | |
1423 | int result_limit; | |
1424 | int *done; | |
1425 | int *result_count; | |
1426 | threadref *threadlist; | |
1427 | ||
1428 | { | |
1429 | static threadref echo_nextthread; | |
085dd6e6 JM |
1430 | char *threadlist_packet = alloca (PBUFSIZ); |
1431 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1432 | int result = 1; |
1433 | ||
1434 | /* Trancate result limit to be smaller than the packet size */ | |
1435 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1436 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1437 | ||
1438 | pack_threadlist_request (threadlist_packet, | |
1439 | startflag, result_limit, nextthread); | |
1440 | putpkt (threadlist_packet); | |
c2d11a7d | 1441 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1442 | |
1443 | *result_count = | |
1444 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1445 | threadlist, done); | |
1446 | ||
1447 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1448 | { | |
1449 | /* FIXME: This is a good reason to drop the packet */ | |
1450 | /* Possably, there is a duplicate response */ | |
1451 | /* Possabilities : | |
1452 | retransmit immediatly - race conditions | |
1453 | retransmit after timeout - yes | |
1454 | exit | |
1455 | wait for packet, then exit | |
1456 | */ | |
1457 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1458 | return 0; /* I choose simply exiting */ | |
1459 | } | |
1460 | if (*result_count <= 0) | |
1461 | { | |
1462 | if (*done != 1) | |
1463 | { | |
1464 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1465 | result = 0; | |
1466 | } | |
1467 | return result; /* break; */ | |
1468 | } | |
1469 | if (*result_count > result_limit) | |
1470 | { | |
1471 | *result_count = 0; | |
1472 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1473 | return 0; | |
1474 | } | |
1475 | return result; | |
1476 | } | |
1477 | ||
1478 | /* This is the interface between remote and threads, remotes upper interface */ | |
1479 | ||
1480 | /* remote_find_new_threads retrieves the thread list and for each | |
1481 | thread in the list, looks up the thread in GDB's internal list, | |
1482 | ading the thread if it does not already exist. This involves | |
1483 | getting partial thread lists from the remote target so, polling the | |
1484 | quit_flag is required. */ | |
1485 | ||
1486 | ||
1487 | /* About this many threadisds fit in a packet. */ | |
1488 | ||
1489 | #define MAXTHREADLISTRESULTS 32 | |
1490 | ||
1491 | static int | |
1492 | remote_threadlist_iterator (stepfunction, context, looplimit) | |
1493 | rmt_thread_action stepfunction; | |
1494 | void *context; | |
1495 | int looplimit; | |
1496 | { | |
1497 | int done, i, result_count; | |
1498 | int startflag = 1; | |
1499 | int result = 1; | |
1500 | int loopcount = 0; | |
1501 | static threadref nextthread; | |
1502 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1503 | ||
1504 | done = 0; | |
1505 | while (!done) | |
1506 | { | |
1507 | if (loopcount++ > looplimit) | |
1508 | { | |
1509 | result = 0; | |
1510 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1511 | break; | |
1512 | } | |
1513 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1514 | &done, &result_count, resultthreadlist)) | |
1515 | { | |
1516 | result = 0; | |
1517 | break; | |
1518 | } | |
1519 | /* clear for later iterations */ | |
1520 | startflag = 0; | |
1521 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1522 | if (result_count >= 1) | |
1523 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1524 | i = 0; | |
1525 | while (result_count--) | |
1526 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1527 | break; | |
1528 | } | |
1529 | return result; | |
1530 | } | |
1531 | ||
1532 | static int | |
1533 | remote_newthread_step (ref, context) | |
1534 | threadref *ref; | |
1535 | void *context; | |
1536 | { | |
1537 | int pid; | |
1538 | ||
1539 | pid = threadref_to_int (ref); | |
1540 | if (!in_thread_list (pid)) | |
1541 | add_thread (pid); | |
1542 | return 1; /* continue iterator */ | |
1543 | } | |
1544 | ||
1545 | #define CRAZY_MAX_THREADS 1000 | |
1546 | ||
1547 | static int | |
1548 | remote_current_thread (oldpid) | |
1549 | int oldpid; | |
1550 | { | |
085dd6e6 | 1551 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1552 | |
1553 | putpkt ("qC"); | |
c2d11a7d | 1554 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1555 | if (buf[0] == 'Q' && buf[1] == 'C') |
1556 | return strtol (&buf[2], NULL, 16); | |
1557 | else | |
1558 | return oldpid; | |
1559 | } | |
1560 | ||
cce74817 JM |
1561 | /* Find new threads for info threads command. */ |
1562 | ||
1563 | static void | |
c906108c SS |
1564 | remote_find_new_threads () |
1565 | { | |
c5aa993b JM |
1566 | remote_threadlist_iterator (remote_newthread_step, 0, |
1567 | CRAZY_MAX_THREADS); | |
c906108c SS |
1568 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1569 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1570 | } |
1571 | ||
0f71a2f6 JM |
1572 | static void |
1573 | remote_threads_info (void) | |
1574 | { | |
085dd6e6 JM |
1575 | char *buf = alloca (PBUFSIZ); |
1576 | char *bufp; | |
0f71a2f6 JM |
1577 | int tid; |
1578 | ||
1579 | if (remote_desc == 0) /* paranoia */ | |
1580 | error ("Command can only be used when connected to the remote target."); | |
1581 | ||
1582 | putpkt ("qfThreadInfo"); | |
c2d11a7d JM |
1583 | bufp = buf; |
1584 | getpkt (bufp, PBUFSIZ, 0); | |
0f71a2f6 JM |
1585 | if (bufp[0] == '\0') /* q packet not recognized! */ |
1586 | { /* try old jmetzler method */ | |
1587 | remote_find_new_threads (); | |
1588 | return; | |
1589 | } | |
1590 | else /* try new 'q' method */ | |
c5aa993b | 1591 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
0f71a2f6 | 1592 | { |
c5aa993b JM |
1593 | do |
1594 | { | |
1595 | tid = strtol (bufp, &bufp, 16); | |
1596 | if (tid != 0 && !in_thread_list (tid)) | |
1597 | add_thread (tid); | |
1598 | } | |
1599 | while (*bufp++ == ','); /* comma-separated list */ | |
0f71a2f6 | 1600 | putpkt ("qsThreadInfo"); |
c2d11a7d JM |
1601 | bufp = buf; |
1602 | getpkt (bufp, PBUFSIZ, 0); | |
0f71a2f6 JM |
1603 | } |
1604 | } | |
c906108c | 1605 | \f |
c5aa993b | 1606 | |
c906108c SS |
1607 | /* Restart the remote side; this is an extended protocol operation. */ |
1608 | ||
1609 | static void | |
1610 | extended_remote_restart () | |
1611 | { | |
085dd6e6 | 1612 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1613 | |
1614 | /* Send the restart command; for reasons I don't understand the | |
1615 | remote side really expects a number after the "R". */ | |
1616 | buf[0] = 'R'; | |
1617 | sprintf (&buf[1], "%x", 0); | |
1618 | putpkt (buf); | |
1619 | ||
1620 | /* Now query for status so this looks just like we restarted | |
1621 | gdbserver from scratch. */ | |
1622 | putpkt ("?"); | |
c2d11a7d | 1623 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1624 | } |
1625 | \f | |
1626 | /* Clean up connection to a remote debugger. */ | |
1627 | ||
1628 | /* ARGSUSED */ | |
1629 | static void | |
1630 | remote_close (quitting) | |
1631 | int quitting; | |
1632 | { | |
1633 | if (remote_desc) | |
1634 | SERIAL_CLOSE (remote_desc); | |
1635 | remote_desc = NULL; | |
1636 | } | |
1637 | ||
1638 | /* Query the remote side for the text, data and bss offsets. */ | |
1639 | ||
1640 | static void | |
1641 | get_offsets () | |
1642 | { | |
085dd6e6 JM |
1643 | char *buf = alloca (PBUFSIZ); |
1644 | char *ptr; | |
c906108c SS |
1645 | int lose; |
1646 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1647 | struct section_offsets *offs; | |
1648 | ||
1649 | putpkt ("qOffsets"); | |
1650 | ||
c2d11a7d | 1651 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1652 | |
1653 | if (buf[0] == '\000') | |
1654 | return; /* Return silently. Stub doesn't support | |
1655 | this command. */ | |
1656 | if (buf[0] == 'E') | |
1657 | { | |
1658 | warning ("Remote failure reply: %s", buf); | |
1659 | return; | |
1660 | } | |
1661 | ||
1662 | /* Pick up each field in turn. This used to be done with scanf, but | |
1663 | scanf will make trouble if CORE_ADDR size doesn't match | |
1664 | conversion directives correctly. The following code will work | |
1665 | with any size of CORE_ADDR. */ | |
1666 | text_addr = data_addr = bss_addr = 0; | |
1667 | ptr = buf; | |
1668 | lose = 0; | |
1669 | ||
1670 | if (strncmp (ptr, "Text=", 5) == 0) | |
1671 | { | |
1672 | ptr += 5; | |
1673 | /* Don't use strtol, could lose on big values. */ | |
1674 | while (*ptr && *ptr != ';') | |
1675 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1676 | } | |
1677 | else | |
1678 | lose = 1; | |
1679 | ||
1680 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1681 | { | |
1682 | ptr += 6; | |
1683 | while (*ptr && *ptr != ';') | |
1684 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1685 | } | |
1686 | else | |
1687 | lose = 1; | |
1688 | ||
1689 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1690 | { | |
1691 | ptr += 5; | |
1692 | while (*ptr && *ptr != ';') | |
1693 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1694 | } | |
1695 | else | |
1696 | lose = 1; | |
1697 | ||
1698 | if (lose) | |
1699 | error ("Malformed response to offset query, %s", buf); | |
1700 | ||
1701 | if (symfile_objfile == NULL) | |
1702 | return; | |
1703 | ||
d4f3574e SS |
1704 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1705 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c SS |
1706 | |
1707 | ANOFFSET (offs, SECT_OFF_TEXT) = text_addr; | |
1708 | ||
1709 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1710 | because that's what nlmconv does now. The real solution requires changes | |
1711 | to the stub and remote.c that I don't have time to do right now. */ | |
1712 | ||
1713 | ANOFFSET (offs, SECT_OFF_DATA) = data_addr; | |
1714 | ANOFFSET (offs, SECT_OFF_BSS) = data_addr; | |
1715 | ||
1716 | objfile_relocate (symfile_objfile, offs); | |
1717 | } | |
1718 | ||
0f71a2f6 JM |
1719 | /* |
1720 | * Cisco version of section offsets: | |
1721 | * | |
1722 | * Instead of having GDB query the target for the section offsets, | |
1723 | * Cisco lets the target volunteer the information! It's also in | |
1724 | * a different format, so here are the functions that will decode | |
1725 | * a section offset packet from a Cisco target. | |
1726 | */ | |
1727 | ||
1728 | /* | |
1729 | * Function: remote_cisco_section_offsets | |
1730 | * | |
1731 | * Returns: zero for success, non-zero for failure | |
1732 | */ | |
1733 | ||
c5aa993b | 1734 | static int |
c2d11a7d JM |
1735 | remote_cisco_section_offsets (bfd_vma text_addr, |
1736 | bfd_vma data_addr, | |
1737 | bfd_vma bss_addr, | |
1738 | bfd_signed_vma *text_offs, | |
1739 | bfd_signed_vma *data_offs, | |
1740 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1741 | { |
1742 | bfd_vma text_base, data_base, bss_base; | |
1743 | struct minimal_symbol *start; | |
1744 | asection *sect; | |
c5aa993b | 1745 | bfd *abfd; |
0f71a2f6 JM |
1746 | int len; |
1747 | char *p; | |
1748 | ||
1749 | if (symfile_objfile == NULL) | |
c5aa993b | 1750 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1751 | |
1752 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1753 | if (start == NULL) | |
c5aa993b | 1754 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1755 | |
1756 | data_base = bss_base = 0; | |
1757 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1758 | ||
1759 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1760 | for (sect = abfd->sections; |
0f71a2f6 JM |
1761 | sect != 0; |
1762 | sect = sect->next) | |
1763 | { | |
c5aa993b | 1764 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1765 | len = strlen (p); |
1766 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1767 | if (data_base == 0 || | |
1768 | data_base > bfd_get_section_vma (abfd, sect)) | |
1769 | data_base = bfd_get_section_vma (abfd, sect); | |
1770 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1771 | if (bss_base == 0 || |
0f71a2f6 JM |
1772 | bss_base > bfd_get_section_vma (abfd, sect)) |
1773 | bss_base = bfd_get_section_vma (abfd, sect); | |
1774 | } | |
1775 | *text_offs = text_addr - text_base; | |
1776 | *data_offs = data_addr - data_base; | |
c5aa993b | 1777 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1778 | if (remote_debug) |
1779 | { | |
1780 | char tmp[128]; | |
1781 | ||
1782 | sprintf (tmp, "VMA: text = 0x"); | |
1783 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1784 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1785 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1786 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1787 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1788 | fprintf_filtered (gdb_stdlog, tmp); | |
1789 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1790 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1791 | paddr_nz (*text_offs), | |
1792 | paddr_nz (*data_offs), | |
1793 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1794 | } |
1795 | ||
1796 | return 0; | |
1797 | } | |
1798 | ||
1799 | /* | |
1800 | * Function: remote_cisco_objfile_relocate | |
1801 | * | |
1802 | * Relocate the symbol file for a remote target. | |
1803 | */ | |
1804 | ||
96baa820 | 1805 | void |
0f71a2f6 JM |
1806 | remote_cisco_objfile_relocate (text_off, data_off, bss_off) |
1807 | bfd_signed_vma text_off; | |
1808 | bfd_signed_vma data_off; | |
1809 | bfd_signed_vma bss_off; | |
1810 | { | |
1811 | struct section_offsets *offs; | |
1812 | ||
c5aa993b | 1813 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1814 | { |
1815 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1816 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1817 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1818 | |
d4f3574e SS |
1819 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1820 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 JM |
1821 | |
1822 | ANOFFSET (offs, SECT_OFF_TEXT) = text_off; | |
1823 | ANOFFSET (offs, SECT_OFF_DATA) = data_off; | |
c5aa993b | 1824 | ANOFFSET (offs, SECT_OFF_BSS) = bss_off; |
0f71a2f6 JM |
1825 | |
1826 | /* First call the standard objfile_relocate. */ | |
1827 | objfile_relocate (symfile_objfile, offs); | |
1828 | ||
1829 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1830 | the exec target. These entries will control memory transfers |
1831 | from the exec file. */ | |
0f71a2f6 JM |
1832 | |
1833 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1834 | } | |
1835 | } | |
1836 | ||
c906108c SS |
1837 | /* Stub for catch_errors. */ |
1838 | ||
0f71a2f6 | 1839 | static int |
c2d11a7d | 1840 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
1841 | { |
1842 | start_remote (); /* Initialize gdb process mechanisms */ | |
1843 | return 1; | |
1844 | } | |
1845 | ||
c906108c SS |
1846 | static int |
1847 | remote_start_remote (dummy) | |
1848 | PTR dummy; | |
1849 | { | |
1850 | immediate_quit = 1; /* Allow user to interrupt it */ | |
1851 | ||
1852 | /* Ack any packet which the remote side has already sent. */ | |
1853 | SERIAL_WRITE (remote_desc, "+", 1); | |
1854 | ||
1855 | /* Let the stub know that we want it to return the thread. */ | |
1856 | set_thread (-1, 0); | |
1857 | ||
1858 | inferior_pid = remote_current_thread (inferior_pid); | |
1859 | ||
1860 | get_offsets (); /* Get text, data & bss offsets */ | |
1861 | ||
1862 | putpkt ("?"); /* initiate a query from remote machine */ | |
1863 | immediate_quit = 0; | |
1864 | ||
0f71a2f6 | 1865 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1866 | } |
1867 | ||
1868 | /* Open a connection to a remote debugger. | |
1869 | NAME is the filename used for communication. */ | |
1870 | ||
1871 | static void | |
1872 | remote_open (name, from_tty) | |
1873 | char *name; | |
1874 | int from_tty; | |
1875 | { | |
1876 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
1877 | } | |
1878 | ||
43ff13b4 JM |
1879 | /* Just like remote_open, but with asynchronous support. */ |
1880 | static void | |
1881 | remote_async_open (name, from_tty) | |
1882 | char *name; | |
1883 | int from_tty; | |
1884 | { | |
1885 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
1886 | } | |
1887 | ||
c906108c SS |
1888 | /* Open a connection to a remote debugger using the extended |
1889 | remote gdb protocol. NAME is the filename used for communication. */ | |
1890 | ||
1891 | static void | |
1892 | extended_remote_open (name, from_tty) | |
1893 | char *name; | |
1894 | int from_tty; | |
1895 | { | |
c5aa993b | 1896 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
1897 | } |
1898 | ||
43ff13b4 JM |
1899 | /* Just like extended_remote_open, but with asynchronous support. */ |
1900 | static void | |
1901 | extended_remote_async_open (name, from_tty) | |
1902 | char *name; | |
1903 | int from_tty; | |
1904 | { | |
c5aa993b | 1905 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
1906 | } |
1907 | ||
c906108c SS |
1908 | /* Generic code for opening a connection to a remote target. */ |
1909 | ||
1910 | static DCACHE *remote_dcache; | |
1911 | ||
1912 | static void | |
1913 | remote_open_1 (name, from_tty, target, extended_p) | |
1914 | char *name; | |
1915 | int from_tty; | |
1916 | struct target_ops *target; | |
1917 | int extended_p; | |
1918 | { | |
1919 | if (name == 0) | |
1920 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
1921 | serial device is attached to the remote system\n\ |
1922 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 1923 | |
6426a772 JM |
1924 | /* See FIXME above */ |
1925 | wait_forever_enabled_p = 1; | |
1926 | ||
c906108c SS |
1927 | target_preopen (from_tty); |
1928 | ||
1929 | unpush_target (target); | |
1930 | ||
1931 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
1932 | ||
1933 | remote_desc = SERIAL_OPEN (name); | |
1934 | if (!remote_desc) | |
1935 | perror_with_name (name); | |
1936 | ||
1937 | if (baud_rate != -1) | |
1938 | { | |
1939 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
1940 | { | |
1941 | SERIAL_CLOSE (remote_desc); | |
1942 | perror_with_name (name); | |
1943 | } | |
1944 | } | |
1945 | ||
c906108c SS |
1946 | SERIAL_RAW (remote_desc); |
1947 | ||
1948 | /* If there is something sitting in the buffer we might take it as a | |
1949 | response to a command, which would be bad. */ | |
1950 | SERIAL_FLUSH_INPUT (remote_desc); | |
1951 | ||
1952 | if (from_tty) | |
1953 | { | |
1954 | puts_filtered ("Remote debugging using "); | |
1955 | puts_filtered (name); | |
1956 | puts_filtered ("\n"); | |
1957 | } | |
c5aa993b | 1958 | push_target (target); /* Switch to using remote target now */ |
c906108c | 1959 | |
5a2468f5 | 1960 | init_packet_config (&remote_protocol_P); |
96baa820 JM |
1961 | init_packet_config (&remote_protocol_Z); |
1962 | ||
c5aa993b | 1963 | general_thread = -2; |
cce74817 | 1964 | continue_thread = -2; |
c906108c SS |
1965 | |
1966 | /* Force remote_write_bytes to check whether target supports | |
1967 | binary downloading. */ | |
96baa820 | 1968 | init_packet_config (&remote_protocol_binary_download); |
c906108c SS |
1969 | |
1970 | /* Without this, some commands which require an active target (such | |
1971 | as kill) won't work. This variable serves (at least) double duty | |
1972 | as both the pid of the target process (if it has such), and as a | |
1973 | flag indicating that a target is active. These functions should | |
1974 | be split out into seperate variables, especially since GDB will | |
1975 | someday have a notion of debugging several processes. */ | |
1976 | ||
1977 | inferior_pid = MAGIC_NULL_PID; | |
1978 | /* Start the remote connection; if error (0), discard this target. | |
1979 | In particular, if the user quits, be sure to discard it | |
1980 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
1981 | if (!catch_errors (remote_start_remote, NULL, |
1982 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
1983 | RETURN_MASK_ALL)) |
1984 | { | |
1985 | pop_target (); | |
1986 | return; | |
1987 | } | |
1988 | ||
1989 | if (extended_p) | |
1990 | { | |
1991 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 1992 | char *buf = alloca (PBUFSIZ); |
c906108c | 1993 | putpkt ("!"); |
c2d11a7d | 1994 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1995 | } |
1996 | } | |
1997 | ||
43ff13b4 JM |
1998 | /* Just like remote_open but with asynchronous support. */ |
1999 | static void | |
2000 | remote_async_open_1 (name, from_tty, target, extended_p) | |
2001 | char *name; | |
2002 | int from_tty; | |
2003 | struct target_ops *target; | |
2004 | int extended_p; | |
2005 | { | |
2006 | if (name == 0) | |
2007 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2008 | serial device is attached to the remote system\n\ |
2009 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2010 | |
2011 | target_preopen (from_tty); | |
2012 | ||
2013 | unpush_target (target); | |
2014 | ||
2015 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
2016 | ||
2017 | remote_desc = SERIAL_OPEN (name); | |
2018 | if (!remote_desc) | |
2019 | perror_with_name (name); | |
2020 | ||
2021 | if (baud_rate != -1) | |
2022 | { | |
2023 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2024 | { | |
2025 | SERIAL_CLOSE (remote_desc); | |
2026 | perror_with_name (name); | |
2027 | } | |
2028 | } | |
2029 | ||
2030 | SERIAL_RAW (remote_desc); | |
2031 | ||
2032 | /* If there is something sitting in the buffer we might take it as a | |
2033 | response to a command, which would be bad. */ | |
2034 | SERIAL_FLUSH_INPUT (remote_desc); | |
2035 | ||
2036 | if (from_tty) | |
2037 | { | |
2038 | puts_filtered ("Remote debugging using "); | |
2039 | puts_filtered (name); | |
2040 | puts_filtered ("\n"); | |
2041 | } | |
2042 | ||
c5aa993b | 2043 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2044 | |
5a2468f5 | 2045 | init_packet_config (&remote_protocol_P); |
96baa820 | 2046 | init_packet_config (&remote_protocol_Z); |
43ff13b4 | 2047 | |
c5aa993b | 2048 | general_thread = -2; |
43ff13b4 JM |
2049 | continue_thread = -2; |
2050 | ||
2051 | /* Force remote_write_bytes to check whether target supports | |
2052 | binary downloading. */ | |
96baa820 | 2053 | init_packet_config (&remote_protocol_binary_download); |
43ff13b4 | 2054 | |
43ff13b4 JM |
2055 | /* Without this, some commands which require an active target (such |
2056 | as kill) won't work. This variable serves (at least) double duty | |
2057 | as both the pid of the target process (if it has such), and as a | |
2058 | flag indicating that a target is active. These functions should | |
2059 | be split out into seperate variables, especially since GDB will | |
2060 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2061 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2062 | |
2063 | /* With this target we start out by owning the terminal. */ | |
2064 | remote_async_terminal_ours_p = 1; | |
2065 | ||
2066 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2067 | assumed that the target is already ready and able to respond to | |
2068 | requests. Unfortunatly remote_start_remote() eventually calls | |
2069 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2070 | around this. Eventually a mechanism that allows | |
2071 | wait_for_inferior() to expect/get timeouts will be | |
2072 | implemented. */ | |
2073 | wait_forever_enabled_p = 0; | |
2074 | ||
43ff13b4 JM |
2075 | /* Start the remote connection; if error (0), discard this target. |
2076 | In particular, if the user quits, be sure to discard it | |
2077 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2078 | if (!catch_errors (remote_start_remote, NULL, |
2079 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2080 | RETURN_MASK_ALL)) |
2081 | { | |
43ff13b4 | 2082 | pop_target (); |
6426a772 | 2083 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2084 | return; |
2085 | } | |
2086 | ||
6426a772 JM |
2087 | wait_forever_enabled_p = 1; |
2088 | ||
2089 | if (extended_p) | |
43ff13b4 | 2090 | { |
6426a772 JM |
2091 | /* tell the remote that we're using the extended protocol. */ |
2092 | char *buf = alloca (PBUFSIZ); | |
2093 | putpkt ("!"); | |
c2d11a7d | 2094 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2095 | } |
43ff13b4 JM |
2096 | } |
2097 | ||
c906108c SS |
2098 | /* This takes a program previously attached to and detaches it. After |
2099 | this is done, GDB can be used to debug some other program. We | |
2100 | better not have left any breakpoints in the target program or it'll | |
2101 | die when it hits one. */ | |
2102 | ||
2103 | static void | |
2104 | remote_detach (args, from_tty) | |
2105 | char *args; | |
2106 | int from_tty; | |
2107 | { | |
085dd6e6 | 2108 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2109 | |
2110 | if (args) | |
2111 | error ("Argument given to \"detach\" when remotely debugging."); | |
2112 | ||
2113 | /* Tell the remote target to detach. */ | |
2114 | strcpy (buf, "D"); | |
c2d11a7d | 2115 | remote_send (buf, PBUFSIZ); |
c906108c | 2116 | |
cca728d0 | 2117 | target_mourn_inferior (); |
c906108c SS |
2118 | if (from_tty) |
2119 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2120 | |
c906108c SS |
2121 | } |
2122 | ||
43ff13b4 JM |
2123 | /* Same as remote_detach, but with async support. */ |
2124 | static void | |
2125 | remote_async_detach (args, from_tty) | |
2126 | char *args; | |
2127 | int from_tty; | |
2128 | { | |
2129 | char *buf = alloca (PBUFSIZ); | |
2130 | ||
2131 | if (args) | |
2132 | error ("Argument given to \"detach\" when remotely debugging."); | |
2133 | ||
2134 | /* Tell the remote target to detach. */ | |
2135 | strcpy (buf, "D"); | |
c2d11a7d | 2136 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2137 | |
2138 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2139 | if (target_is_async_p ()) |
c2c6d25f | 2140 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2141 | |
cca728d0 | 2142 | target_mourn_inferior (); |
43ff13b4 JM |
2143 | if (from_tty) |
2144 | puts_filtered ("Ending remote debugging.\n"); | |
2145 | } | |
2146 | ||
c906108c SS |
2147 | /* Convert hex digit A to a number. */ |
2148 | ||
2149 | int | |
2150 | fromhex (a) | |
2151 | int a; | |
2152 | { | |
2153 | if (a >= '0' && a <= '9') | |
2154 | return a - '0'; | |
2155 | else if (a >= 'a' && a <= 'f') | |
2156 | return a - 'a' + 10; | |
2157 | else if (a >= 'A' && a <= 'F') | |
2158 | return a - 'A' + 10; | |
c5aa993b | 2159 | else |
c906108c SS |
2160 | error ("Reply contains invalid hex digit %d", a); |
2161 | } | |
2162 | ||
2163 | /* Convert number NIB to a hex digit. */ | |
2164 | ||
2165 | static int | |
2166 | tohex (nib) | |
2167 | int nib; | |
2168 | { | |
2169 | if (nib < 10) | |
c5aa993b | 2170 | return '0' + nib; |
c906108c | 2171 | else |
c5aa993b | 2172 | return 'a' + nib - 10; |
c906108c SS |
2173 | } |
2174 | \f | |
2175 | /* Tell the remote machine to resume. */ | |
2176 | ||
2177 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2178 | ||
2179 | static int last_sent_step; | |
2180 | ||
2181 | static void | |
2182 | remote_resume (pid, step, siggnal) | |
2183 | int pid, step; | |
2184 | enum target_signal siggnal; | |
2185 | { | |
085dd6e6 | 2186 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2187 | |
2188 | if (pid == -1) | |
2189 | set_thread (0, 0); /* run any thread */ | |
2190 | else | |
2191 | set_thread (pid, 0); /* run this thread */ | |
2192 | ||
2193 | dcache_flush (remote_dcache); | |
2194 | ||
2195 | last_sent_signal = siggnal; | |
2196 | last_sent_step = step; | |
2197 | ||
2198 | /* A hook for when we need to do something at the last moment before | |
2199 | resumption. */ | |
2200 | if (target_resume_hook) | |
2201 | (*target_resume_hook) (); | |
2202 | ||
2203 | if (siggnal != TARGET_SIGNAL_0) | |
2204 | { | |
2205 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2206 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2207 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2208 | buf[3] = '\0'; |
2209 | } | |
2210 | else | |
c5aa993b | 2211 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2212 | |
2213 | putpkt (buf); | |
2214 | } | |
43ff13b4 JM |
2215 | |
2216 | /* Same as remote_resume, but with async support. */ | |
2217 | static void | |
2218 | remote_async_resume (pid, step, siggnal) | |
2219 | int pid, step; | |
2220 | enum target_signal siggnal; | |
2221 | { | |
2222 | char *buf = alloca (PBUFSIZ); | |
2223 | ||
2224 | if (pid == -1) | |
2225 | set_thread (0, 0); /* run any thread */ | |
2226 | else | |
2227 | set_thread (pid, 0); /* run this thread */ | |
2228 | ||
2229 | dcache_flush (remote_dcache); | |
2230 | ||
2231 | last_sent_signal = siggnal; | |
2232 | last_sent_step = step; | |
2233 | ||
2234 | /* A hook for when we need to do something at the last moment before | |
2235 | resumption. */ | |
2236 | if (target_resume_hook) | |
2237 | (*target_resume_hook) (); | |
2238 | ||
43ff13b4 JM |
2239 | if (siggnal != TARGET_SIGNAL_0) |
2240 | { | |
2241 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2242 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2243 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2244 | buf[3] = '\0'; |
2245 | } | |
2246 | else | |
c5aa993b | 2247 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 | 2248 | |
2acceee2 JM |
2249 | /* We are about to start executing the inferior, let's register it |
2250 | with the event loop. NOTE: this is the one place where all the | |
2251 | execution commands end up. We could alternatively do this in each | |
2252 | of the execution commands in infcmd.c.*/ | |
2253 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2254 | into infcmd.c in order to allow inferior function calls to work | |
2255 | NOT asynchronously. */ | |
ed9a39eb | 2256 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2257 | target_async (inferior_event_handler, 0); |
2258 | /* Tell the world that the target is now executing. */ | |
2259 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2260 | this? Instead, should the client of target just assume (for | |
2261 | async targets) that the target is going to start executing? Is | |
2262 | this information already found in the continuation block? */ | |
ed9a39eb | 2263 | if (target_is_async_p ()) |
2acceee2 | 2264 | target_executing = 1; |
43ff13b4 JM |
2265 | putpkt (buf); |
2266 | } | |
c906108c | 2267 | \f |
43ff13b4 JM |
2268 | |
2269 | /* Set up the signal handler for SIGINT, while the target is | |
2270 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2271 | static void | |
2272 | initialize_sigint_signal_handler () | |
2273 | { | |
c5aa993b | 2274 | sigint_remote_token = |
43ff13b4 JM |
2275 | create_async_signal_handler (async_remote_interrupt, NULL); |
2276 | signal (SIGINT, handle_remote_sigint); | |
2277 | } | |
2278 | ||
2279 | /* Signal handler for SIGINT, while the target is executing. */ | |
2280 | static void | |
2281 | handle_remote_sigint (sig) | |
2282 | int sig; | |
2283 | { | |
2284 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2285 | sigint_remote_twice_token = |
43ff13b4 JM |
2286 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2287 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2288 | } | |
2289 | ||
2290 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2291 | sent once. It will take effect the second time that the user sends | |
2292 | a ^C. */ | |
2293 | static void | |
2294 | handle_remote_sigint_twice (sig) | |
2295 | int sig; | |
2296 | { | |
2297 | signal (sig, handle_sigint); | |
c5aa993b | 2298 | sigint_remote_twice_token = |
2df3850c | 2299 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2300 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2301 | } | |
2302 | ||
6426a772 | 2303 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2304 | to a ^C. */ |
c5aa993b | 2305 | static void |
43ff13b4 JM |
2306 | async_remote_interrupt (arg) |
2307 | gdb_client_data arg; | |
2308 | { | |
2309 | if (remote_debug) | |
2310 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2311 | ||
2312 | target_stop (); | |
2313 | } | |
2314 | ||
2315 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2316 | up on the target alltogether. */ | |
2df3850c | 2317 | void |
43ff13b4 JM |
2318 | async_remote_interrupt_twice (arg) |
2319 | gdb_client_data arg; | |
2320 | { | |
2df3850c JM |
2321 | if (remote_debug) |
2322 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2323 | /* Do something only if the target was not killed by the previous |
2324 | cntl-C. */ | |
2325 | if (target_executing) | |
2326 | { | |
2327 | interrupt_query (); | |
2328 | signal (SIGINT, handle_remote_sigint); | |
2329 | } | |
43ff13b4 JM |
2330 | } |
2331 | ||
2332 | /* Reinstall the usual SIGINT handlers, after the target has | |
2333 | stopped. */ | |
6426a772 JM |
2334 | static void |
2335 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2336 | { |
2337 | signal (SIGINT, handle_sigint); | |
2338 | if (sigint_remote_twice_token) | |
c2c6d25f | 2339 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2340 | if (sigint_remote_token) |
c2c6d25f | 2341 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2342 | } |
2343 | ||
c906108c SS |
2344 | /* Send ^C to target to halt it. Target will respond, and send us a |
2345 | packet. */ | |
c906108c SS |
2346 | static void (*ofunc) PARAMS ((int)); |
2347 | ||
7a292a7a SS |
2348 | /* The command line interface's stop routine. This function is installed |
2349 | as a signal handler for SIGINT. The first time a user requests a | |
2350 | stop, we call remote_stop to send a break or ^C. If there is no | |
2351 | response from the target (it didn't stop when the user requested it), | |
2352 | we ask the user if he'd like to detach from the target. */ | |
c906108c SS |
2353 | static void |
2354 | remote_interrupt (signo) | |
2355 | int signo; | |
2356 | { | |
7a292a7a SS |
2357 | /* If this doesn't work, try more severe steps. */ |
2358 | signal (signo, remote_interrupt_twice); | |
2359 | ||
2360 | if (remote_debug) | |
0f71a2f6 | 2361 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2362 | |
2363 | target_stop (); | |
2364 | } | |
2365 | ||
2366 | /* The user typed ^C twice. */ | |
2367 | ||
2368 | static void | |
2369 | remote_interrupt_twice (signo) | |
2370 | int signo; | |
2371 | { | |
2372 | signal (signo, ofunc); | |
2373 | interrupt_query (); | |
c906108c SS |
2374 | signal (signo, remote_interrupt); |
2375 | } | |
7a292a7a SS |
2376 | |
2377 | /* This is the generic stop called via the target vector. When a target | |
2378 | interrupt is requested, either by the command line or the GUI, we | |
2379 | will eventually end up here. */ | |
c906108c SS |
2380 | static void |
2381 | remote_stop () | |
2382 | { | |
7a292a7a SS |
2383 | /* Send a break or a ^C, depending on user preference. */ |
2384 | if (remote_debug) | |
0f71a2f6 | 2385 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2386 | |
7a292a7a SS |
2387 | if (remote_break) |
2388 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2389 | else |
7a292a7a | 2390 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2391 | } |
2392 | ||
2393 | /* Ask the user what to do when an interrupt is received. */ | |
2394 | ||
2395 | static void | |
2396 | interrupt_query () | |
2397 | { | |
2398 | target_terminal_ours (); | |
2399 | ||
2400 | if (query ("Interrupted while waiting for the program.\n\ | |
2401 | Give up (and stop debugging it)? ")) | |
2402 | { | |
2403 | target_mourn_inferior (); | |
2404 | return_to_top_level (RETURN_QUIT); | |
2405 | } | |
2406 | ||
2407 | target_terminal_inferior (); | |
2408 | } | |
2409 | ||
6426a772 JM |
2410 | /* Enable/disable target terminal ownership. Most targets can use |
2411 | terminal groups to control terminal ownership. Remote targets are | |
2412 | different in that explicit transfer of ownership to/from GDB/target | |
2413 | is required. */ | |
2414 | ||
2415 | static void | |
2416 | remote_async_terminal_inferior (void) | |
2417 | { | |
2418 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2419 | sync_execution here. This function should only be called when | |
2420 | GDB is resuming the inferior in the forground. A background | |
2421 | resume (``run&'') should leave GDB in control of the terminal and | |
2422 | consequently should not call this code. */ | |
2423 | if (!sync_execution) | |
2424 | return; | |
2425 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2426 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2427 | to an asynchronous target with a synchronous command calls this | |
2428 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2429 | stops trying to transfer the terminal to the target when it | |
2430 | shouldn't this guard can go away. */ | |
2431 | if (!remote_async_terminal_ours_p) | |
2432 | return; | |
2433 | delete_file_handler (input_fd); | |
2434 | remote_async_terminal_ours_p = 0; | |
2435 | initialize_sigint_signal_handler (); | |
2436 | /* NOTE: At this point we could also register our selves as the | |
2437 | recipient of all input. Any characters typed could then be | |
2438 | passed on down to the target. */ | |
2439 | } | |
2440 | ||
2441 | static void | |
2442 | remote_async_terminal_ours (void) | |
2443 | { | |
2444 | /* See FIXME in remote_async_terminal_inferior. */ | |
2445 | if (!sync_execution) | |
2446 | return; | |
2447 | /* See FIXME in remote_async_terminal_inferior. */ | |
2448 | if (remote_async_terminal_ours_p) | |
2449 | return; | |
2450 | cleanup_sigint_signal_handler (NULL); | |
2451 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2452 | remote_async_terminal_ours_p = 1; | |
2453 | } | |
2454 | ||
c906108c SS |
2455 | /* If nonzero, ignore the next kill. */ |
2456 | ||
2457 | int kill_kludge; | |
2458 | ||
2459 | void | |
917317f4 | 2460 | remote_console_output (char *msg) |
c906108c SS |
2461 | { |
2462 | char *p; | |
2463 | ||
c5aa993b | 2464 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2465 | { |
2466 | char tb[2]; | |
2467 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2468 | tb[0] = c; | |
2469 | tb[1] = 0; | |
43ff13b4 | 2470 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2471 | } |
917317f4 | 2472 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2473 | } |
2474 | ||
0f71a2f6 JM |
2475 | /* Wait until the remote machine stops, then return, |
2476 | storing status in STATUS just as `wait' would. | |
2477 | Returns "pid", which in the case of a multi-threaded | |
2478 | remote OS, is the thread-id. */ | |
c906108c SS |
2479 | |
2480 | static int | |
2481 | remote_wait (pid, status) | |
2482 | int pid; | |
2483 | struct target_waitstatus *status; | |
2484 | { | |
085dd6e6 | 2485 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2486 | int thread_num = -1; |
2487 | ||
2488 | status->kind = TARGET_WAITKIND_EXITED; | |
2489 | status->value.integer = 0; | |
2490 | ||
2491 | while (1) | |
2492 | { | |
2493 | unsigned char *p; | |
2494 | ||
c906108c | 2495 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2496 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2497 | signal (SIGINT, ofunc); |
2498 | ||
2499 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2500 | collection of trace data) every time the target stops. */ |
c906108c SS |
2501 | if (target_wait_loop_hook) |
2502 | (*target_wait_loop_hook) (); | |
2503 | ||
2504 | switch (buf[0]) | |
2505 | { | |
2506 | case 'E': /* Error of some sort */ | |
2507 | warning ("Remote failure reply: %s", buf); | |
2508 | continue; | |
2509 | case 'T': /* Status with PC, SP, FP, ... */ | |
2510 | { | |
2511 | int i; | |
2512 | long regno; | |
2513 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2514 | ||
2515 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2516 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2517 | ss = signal number |
2518 | n... = register number | |
2519 | r... = register contents | |
2520 | */ | |
c906108c SS |
2521 | p = &buf[3]; /* after Txx */ |
2522 | ||
2523 | while (*p) | |
2524 | { | |
2525 | unsigned char *p1; | |
2526 | char *p_temp; | |
2527 | ||
2528 | /* Read the register number */ | |
2529 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2530 | p1 = (unsigned char *) p_temp; |
c906108c | 2531 | |
c5aa993b | 2532 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2533 | { |
2534 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2535 | if (p1 == NULL) | |
2536 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2537 | Packet: '%s'\n", | |
2538 | p, buf); | |
2539 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2540 | { | |
2541 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2542 | record_currthread (thread_num); | |
2543 | p = (unsigned char *) p_temp; | |
2544 | } | |
2545 | } | |
2546 | else | |
2547 | { | |
2548 | p = p1; | |
2549 | ||
2550 | if (*p++ != ':') | |
2551 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2552 | Packet: '%s'\n", | |
2553 | p, buf); | |
2554 | ||
2555 | if (regno >= NUM_REGS) | |
2556 | warning ("Remote sent bad register number %ld: %s\n\ | |
2557 | Packet: '%s'\n", | |
2558 | regno, p, buf); | |
2559 | ||
2560 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2561 | { | |
2562 | if (p[0] == 0 || p[1] == 0) | |
2563 | warning ("Remote reply is too short: %s", buf); | |
2564 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2565 | p += 2; | |
2566 | } | |
2567 | supply_register (regno, regs); | |
2568 | } | |
2569 | ||
2570 | if (*p++ != ';') | |
2571 | { | |
2572 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2573 | warning (" here: %s", p); |
c906108c SS |
2574 | } |
2575 | } | |
2576 | } | |
2577 | /* fall through */ | |
2578 | case 'S': /* Old style status, just signal only */ | |
2579 | status->kind = TARGET_WAITKIND_STOPPED; | |
2580 | status->value.sig = (enum target_signal) | |
2581 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2582 | ||
0f71a2f6 JM |
2583 | if (buf[3] == 'p') |
2584 | { | |
2585 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2586 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2587 | |
2588 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2589 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2590 | value_from_string ("PDEBUG-")); |
2591 | cisco_kernel_mode = 0; | |
2592 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2593 | record_currthread (thread_num); | |
2594 | } | |
2595 | else if (buf[3] == 'k') | |
2596 | { | |
2597 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2598 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2599 | |
2600 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2601 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2602 | value_from_string ("KDEBUG-")); |
2603 | cisco_kernel_mode = 1; | |
2604 | } | |
c906108c | 2605 | goto got_status; |
0f71a2f6 JM |
2606 | case 'N': /* Cisco special: status and offsets */ |
2607 | { | |
2608 | bfd_vma text_addr, data_addr, bss_addr; | |
2609 | bfd_signed_vma text_off, data_off, bss_off; | |
2610 | unsigned char *p1; | |
2611 | ||
2612 | status->kind = TARGET_WAITKIND_STOPPED; | |
2613 | status->value.sig = (enum target_signal) | |
2614 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2615 | ||
c5aa993b | 2616 | if (symfile_objfile == NULL) |
0f71a2f6 | 2617 | { |
d4f3574e | 2618 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2619 | Packet Dropped"); |
2620 | goto got_status; | |
2621 | } | |
2622 | ||
2623 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2624 | * where AA is the signal number, TT is the new text | |
2625 | * address, DD * is the new data address, and BB is the | |
2626 | * new bss address. */ | |
2627 | ||
2628 | p = &buf[3]; | |
2629 | text_addr = strtoul (p, (char **) &p1, 16); | |
2630 | if (p1 == p || *p1 != ';') | |
2631 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2632 | p = p1 + 1; | |
2633 | data_addr = strtoul (p, (char **) &p1, 16); | |
2634 | if (p1 == p || *p1 != ';') | |
2635 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2636 | p = p1 + 1; | |
2637 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2638 | if (p1 == p) |
0f71a2f6 JM |
2639 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2640 | ||
2641 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2642 | &text_off, &data_off, &bss_off) | |
2643 | == 0) | |
c5aa993b | 2644 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2645 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2646 | ||
2647 | goto got_status; | |
2648 | } | |
c906108c SS |
2649 | case 'W': /* Target exited */ |
2650 | { | |
2651 | /* The remote process exited. */ | |
2652 | status->kind = TARGET_WAITKIND_EXITED; | |
2653 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2654 | goto got_status; | |
2655 | } | |
2656 | case 'X': | |
2657 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2658 | status->value.sig = (enum target_signal) | |
2659 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2660 | kill_kludge = 1; | |
2661 | ||
2662 | goto got_status; | |
2663 | case 'O': /* Console output */ | |
2664 | remote_console_output (buf + 1); | |
2665 | continue; | |
2666 | case '\0': | |
2667 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2668 | { | |
2669 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2670 | the remote system doesn't support it. */ |
c906108c SS |
2671 | target_terminal_ours_for_output (); |
2672 | printf_filtered | |
2673 | ("Can't send signals to this remote system. %s not sent.\n", | |
2674 | target_signal_to_name (last_sent_signal)); | |
2675 | last_sent_signal = TARGET_SIGNAL_0; | |
2676 | target_terminal_inferior (); | |
2677 | ||
2678 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2679 | putpkt ((char *) buf); | |
2680 | continue; | |
2681 | } | |
2682 | /* else fallthrough */ | |
2683 | default: | |
2684 | warning ("Invalid remote reply: %s", buf); | |
2685 | continue; | |
2686 | } | |
2687 | } | |
c5aa993b | 2688 | got_status: |
c906108c SS |
2689 | if (thread_num != -1) |
2690 | { | |
c906108c SS |
2691 | return thread_num; |
2692 | } | |
2693 | return inferior_pid; | |
2694 | } | |
2695 | ||
43ff13b4 JM |
2696 | /* Async version of remote_wait. */ |
2697 | static int | |
2698 | remote_async_wait (pid, status) | |
2699 | int pid; | |
2700 | struct target_waitstatus *status; | |
2701 | { | |
2702 | unsigned char *buf = alloca (PBUFSIZ); | |
2703 | int thread_num = -1; | |
2704 | ||
2705 | status->kind = TARGET_WAITKIND_EXITED; | |
2706 | status->value.integer = 0; | |
2707 | ||
2708 | while (1) | |
2709 | { | |
2710 | unsigned char *p; | |
c5aa993b | 2711 | |
ed9a39eb | 2712 | if (!target_is_async_p ()) |
43ff13b4 | 2713 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2714 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2715 | _never_ wait for ever -> test on target_is_async_p(). | |
2716 | However, before we do that we need to ensure that the caller | |
2717 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 2718 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 2719 | if (!target_is_async_p ()) |
43ff13b4 JM |
2720 | signal (SIGINT, ofunc); |
2721 | ||
2722 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2723 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2724 | if (target_wait_loop_hook) |
2725 | (*target_wait_loop_hook) (); | |
2726 | ||
2727 | switch (buf[0]) | |
2728 | { | |
2729 | case 'E': /* Error of some sort */ | |
2730 | warning ("Remote failure reply: %s", buf); | |
2731 | continue; | |
2732 | case 'T': /* Status with PC, SP, FP, ... */ | |
2733 | { | |
2734 | int i; | |
2735 | long regno; | |
2736 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2737 | ||
2738 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2739 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2740 | ss = signal number |
2741 | n... = register number | |
2742 | r... = register contents | |
2743 | */ | |
43ff13b4 JM |
2744 | p = &buf[3]; /* after Txx */ |
2745 | ||
2746 | while (*p) | |
2747 | { | |
2748 | unsigned char *p1; | |
2749 | char *p_temp; | |
2750 | ||
2751 | /* Read the register number */ | |
2752 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2753 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2754 | |
c5aa993b | 2755 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2756 | { |
2757 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2758 | if (p1 == NULL) | |
2759 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2760 | Packet: '%s'\n", | |
2761 | p, buf); | |
2762 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2763 | { | |
2764 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2765 | record_currthread (thread_num); | |
2766 | p = (unsigned char *) p_temp; | |
2767 | } | |
2768 | } | |
2769 | else | |
2770 | { | |
2771 | p = p1; | |
2772 | ||
2773 | if (*p++ != ':') | |
2774 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2775 | Packet: '%s'\n", | |
2776 | p, buf); | |
2777 | ||
2778 | if (regno >= NUM_REGS) | |
2779 | warning ("Remote sent bad register number %ld: %s\n\ | |
2780 | Packet: '%s'\n", | |
2781 | regno, p, buf); | |
2782 | ||
2783 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2784 | { | |
2785 | if (p[0] == 0 || p[1] == 0) | |
2786 | warning ("Remote reply is too short: %s", buf); | |
2787 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2788 | p += 2; | |
2789 | } | |
2790 | supply_register (regno, regs); | |
2791 | } | |
2792 | ||
2793 | if (*p++ != ';') | |
2794 | { | |
2795 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2796 | warning (" here: %s", p); |
43ff13b4 JM |
2797 | } |
2798 | } | |
2799 | } | |
2800 | /* fall through */ | |
2801 | case 'S': /* Old style status, just signal only */ | |
2802 | status->kind = TARGET_WAITKIND_STOPPED; | |
2803 | status->value.sig = (enum target_signal) | |
2804 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2805 | ||
2806 | if (buf[3] == 'p') | |
2807 | { | |
2808 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2809 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2810 | |
2811 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2812 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2813 | value_from_string ("PDEBUG-")); |
2814 | cisco_kernel_mode = 0; | |
2815 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2816 | record_currthread (thread_num); | |
2817 | } | |
2818 | else if (buf[3] == 'k') | |
2819 | { | |
2820 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2821 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2822 | |
2823 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2824 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2825 | value_from_string ("KDEBUG-")); |
2826 | cisco_kernel_mode = 1; | |
2827 | } | |
2828 | goto got_status; | |
2829 | case 'N': /* Cisco special: status and offsets */ | |
2830 | { | |
2831 | bfd_vma text_addr, data_addr, bss_addr; | |
2832 | bfd_signed_vma text_off, data_off, bss_off; | |
2833 | unsigned char *p1; | |
2834 | ||
2835 | status->kind = TARGET_WAITKIND_STOPPED; | |
2836 | status->value.sig = (enum target_signal) | |
2837 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2838 | ||
c5aa993b | 2839 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2840 | { |
2841 | warning ("Relocation packet recieved with no symbol file. \ | |
2842 | Packet Dropped"); | |
2843 | goto got_status; | |
2844 | } | |
2845 | ||
2846 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2847 | * where AA is the signal number, TT is the new text | |
2848 | * address, DD * is the new data address, and BB is the | |
2849 | * new bss address. */ | |
2850 | ||
2851 | p = &buf[3]; | |
2852 | text_addr = strtoul (p, (char **) &p1, 16); | |
2853 | if (p1 == p || *p1 != ';') | |
2854 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2855 | p = p1 + 1; | |
2856 | data_addr = strtoul (p, (char **) &p1, 16); | |
2857 | if (p1 == p || *p1 != ';') | |
2858 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2859 | p = p1 + 1; | |
2860 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2861 | if (p1 == p) |
43ff13b4 JM |
2862 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2863 | ||
2864 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2865 | &text_off, &data_off, &bss_off) | |
2866 | == 0) | |
c5aa993b | 2867 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2868 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2869 | ||
2870 | goto got_status; | |
2871 | } | |
2872 | case 'W': /* Target exited */ | |
2873 | { | |
2874 | /* The remote process exited. */ | |
2875 | status->kind = TARGET_WAITKIND_EXITED; | |
2876 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2877 | goto got_status; | |
2878 | } | |
2879 | case 'X': | |
2880 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2881 | status->value.sig = (enum target_signal) | |
2882 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2883 | kill_kludge = 1; | |
2884 | ||
2885 | goto got_status; | |
2886 | case 'O': /* Console output */ | |
2887 | remote_console_output (buf + 1); | |
c4093a6a JM |
2888 | /* Return immediately to the event loop. The event loop will |
2889 | still be waiting on the inferior afterwards. */ | |
2890 | status->kind = TARGET_WAITKIND_IGNORE; | |
2891 | goto got_status; | |
43ff13b4 JM |
2892 | case '\0': |
2893 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2894 | { | |
2895 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2896 | the remote system doesn't support it. */ |
43ff13b4 JM |
2897 | target_terminal_ours_for_output (); |
2898 | printf_filtered | |
2899 | ("Can't send signals to this remote system. %s not sent.\n", | |
2900 | target_signal_to_name (last_sent_signal)); | |
2901 | last_sent_signal = TARGET_SIGNAL_0; | |
2902 | target_terminal_inferior (); | |
2903 | ||
2904 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2905 | putpkt ((char *) buf); | |
2906 | continue; | |
2907 | } | |
2908 | /* else fallthrough */ | |
2909 | default: | |
2910 | warning ("Invalid remote reply: %s", buf); | |
2911 | continue; | |
2912 | } | |
2913 | } | |
c5aa993b | 2914 | got_status: |
43ff13b4 JM |
2915 | if (thread_num != -1) |
2916 | { | |
2917 | return thread_num; | |
2918 | } | |
2919 | return inferior_pid; | |
2920 | } | |
2921 | ||
c906108c SS |
2922 | /* Number of bytes of registers this stub implements. */ |
2923 | ||
2924 | static int register_bytes_found; | |
2925 | ||
2926 | /* Read the remote registers into the block REGS. */ | |
2927 | /* Currently we just read all the registers, so we don't use regno. */ | |
2928 | ||
2929 | /* ARGSUSED */ | |
2930 | static void | |
2931 | remote_fetch_registers (regno) | |
2932 | int regno; | |
2933 | { | |
085dd6e6 | 2934 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2935 | int i; |
2936 | char *p; | |
2937 | char regs[REGISTER_BYTES]; | |
2938 | ||
2939 | set_thread (inferior_pid, 1); | |
2940 | ||
2941 | sprintf (buf, "g"); | |
c2d11a7d | 2942 | remote_send (buf, PBUFSIZ); |
c906108c | 2943 | |
11cf8741 JM |
2944 | /* Save the size of the packet sent to us by the target. Its used |
2945 | as a heuristic when determining the max size of packets that the | |
2946 | target can safely receive. */ | |
2947 | if (actual_register_packet_size == 0) | |
2948 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
2949 | |
2950 | /* Unimplemented registers read as all bits zero. */ | |
2951 | memset (regs, 0, REGISTER_BYTES); | |
2952 | ||
2953 | /* We can get out of synch in various cases. If the first character | |
2954 | in the buffer is not a hex character, assume that has happened | |
2955 | and try to fetch another packet to read. */ | |
2956 | while ((buf[0] < '0' || buf[0] > '9') | |
2957 | && (buf[0] < 'a' || buf[0] > 'f') | |
2958 | && buf[0] != 'x') /* New: unavailable register value */ | |
2959 | { | |
2960 | if (remote_debug) | |
0f71a2f6 JM |
2961 | fprintf_unfiltered (gdb_stdlog, |
2962 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 2963 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
2964 | } |
2965 | ||
2966 | /* Reply describes registers byte by byte, each byte encoded as two | |
2967 | hex characters. Suck them all up, then supply them to the | |
2968 | register cacheing/storage mechanism. */ | |
2969 | ||
2970 | p = buf; | |
2971 | for (i = 0; i < REGISTER_BYTES; i++) | |
2972 | { | |
2973 | if (p[0] == 0) | |
2974 | break; | |
2975 | if (p[1] == 0) | |
2976 | { | |
2977 | warning ("Remote reply is of odd length: %s", buf); | |
2978 | /* Don't change register_bytes_found in this case, and don't | |
2979 | print a second warning. */ | |
2980 | goto supply_them; | |
2981 | } | |
2982 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 2983 | regs[i] = 0; /* 'x' */ |
c906108c SS |
2984 | else |
2985 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2986 | p += 2; | |
2987 | } | |
2988 | ||
2989 | if (i != register_bytes_found) | |
2990 | { | |
2991 | register_bytes_found = i; | |
2992 | #ifdef REGISTER_BYTES_OK | |
2993 | if (!REGISTER_BYTES_OK (i)) | |
2994 | warning ("Remote reply is too short: %s", buf); | |
2995 | #endif | |
2996 | } | |
c5aa993b JM |
2997 | |
2998 | supply_them: | |
c906108c | 2999 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3000 | { |
3001 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3002 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
3003 | register_valid[i] = -1; /* register value not available */ | |
3004 | } | |
c906108c SS |
3005 | } |
3006 | ||
3007 | /* Prepare to store registers. Since we may send them all (using a | |
3008 | 'G' request), we have to read out the ones we don't want to change | |
3009 | first. */ | |
3010 | ||
c5aa993b | 3011 | static void |
c906108c SS |
3012 | remote_prepare_to_store () |
3013 | { | |
3014 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3015 | switch (remote_protocol_P.support) |
3016 | { | |
3017 | case PACKET_DISABLE: | |
3018 | case PACKET_SUPPORT_UNKNOWN: | |
3019 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3020 | break; | |
3021 | case PACKET_ENABLE: | |
3022 | break; | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3027 | packet was not recognized. */ | |
3028 | ||
3029 | static int | |
c2d11a7d | 3030 | store_register_using_P (int regno) |
5a2468f5 JM |
3031 | { |
3032 | /* Try storing a single register. */ | |
3033 | char *buf = alloca (PBUFSIZ); | |
3034 | char *regp; | |
3035 | char *p; | |
3036 | int i; | |
3037 | ||
3038 | sprintf (buf, "P%x=", regno); | |
3039 | p = buf + strlen (buf); | |
3040 | regp = ®isters[REGISTER_BYTE (regno)]; | |
3041 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) | |
3042 | { | |
3043 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
3044 | *p++ = tohex (regp[i] & 0xf); | |
3045 | } | |
3046 | *p = '\0'; | |
c2d11a7d | 3047 | remote_send (buf, PBUFSIZ); |
5a2468f5 JM |
3048 | |
3049 | return buf[0] != '\0'; | |
c906108c SS |
3050 | } |
3051 | ||
5a2468f5 | 3052 | |
c906108c SS |
3053 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
3054 | of REGISTERS. FIXME: ignores errors. */ | |
3055 | ||
3056 | static void | |
3057 | remote_store_registers (regno) | |
3058 | int regno; | |
3059 | { | |
085dd6e6 | 3060 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3061 | int i; |
3062 | char *p; | |
3063 | ||
3064 | set_thread (inferior_pid, 1); | |
3065 | ||
5a2468f5 | 3066 | if (regno >= 0) |
c906108c | 3067 | { |
5a2468f5 | 3068 | switch (remote_protocol_P.support) |
c906108c | 3069 | { |
5a2468f5 JM |
3070 | case PACKET_DISABLE: |
3071 | break; | |
3072 | case PACKET_ENABLE: | |
3073 | if (store_register_using_P (regno)) | |
3074 | return; | |
3075 | else | |
3076 | error ("Protocol error: P packet not recognized by stub"); | |
3077 | case PACKET_SUPPORT_UNKNOWN: | |
3078 | if (store_register_using_P (regno)) | |
3079 | { | |
3080 | /* The stub recognized the 'P' packet. Remember this. */ | |
3081 | remote_protocol_P.support = PACKET_ENABLE; | |
3082 | return; | |
3083 | } | |
3084 | else | |
3085 | { | |
3086 | /* The stub does not support the 'P' packet. Use 'G' | |
3087 | instead, and don't try using 'P' in the future (it | |
3088 | will just waste our time). */ | |
3089 | remote_protocol_P.support = PACKET_DISABLE; | |
3090 | break; | |
3091 | } | |
c906108c | 3092 | } |
c906108c SS |
3093 | } |
3094 | ||
3095 | buf[0] = 'G'; | |
3096 | ||
3097 | /* Command describes registers byte by byte, | |
3098 | each byte encoded as two hex characters. */ | |
3099 | ||
3100 | p = buf + 1; | |
3101 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3102 | for (i = 0; i < register_bytes_found; i++) | |
3103 | { | |
3104 | *p++ = tohex ((registers[i] >> 4) & 0xf); | |
3105 | *p++ = tohex (registers[i] & 0xf); | |
3106 | } | |
3107 | *p = '\0'; | |
3108 | ||
c2d11a7d | 3109 | remote_send (buf, PBUFSIZ); |
c906108c SS |
3110 | } |
3111 | ||
3112 | /* Use of the data cache *used* to be disabled because it loses for looking | |
3113 | at and changing hardware I/O ports and the like. Accepting `volatile' | |
3114 | would perhaps be one way to fix it. Another idea would be to use the | |
3115 | executable file for the text segment (for all SEC_CODE sections? | |
3116 | For all SEC_READONLY sections?). This has problems if you want to | |
3117 | actually see what the memory contains (e.g. self-modifying code, | |
3118 | clobbered memory, user downloaded the wrong thing). | |
3119 | ||
3120 | Because it speeds so much up, it's now enabled, if you're playing | |
3121 | with registers you turn it of (set remotecache 0). */ | |
3122 | ||
3123 | /* Read a word from remote address ADDR and return it. | |
3124 | This goes through the data cache. */ | |
3125 | ||
c5aa993b | 3126 | #if 0 /* unused? */ |
c906108c SS |
3127 | static int |
3128 | remote_fetch_word (addr) | |
3129 | CORE_ADDR addr; | |
3130 | { | |
3131 | return dcache_fetch (remote_dcache, addr); | |
3132 | } | |
3133 | ||
3134 | /* Write a word WORD into remote address ADDR. | |
3135 | This goes through the data cache. */ | |
3136 | ||
3137 | static void | |
3138 | remote_store_word (addr, word) | |
3139 | CORE_ADDR addr; | |
3140 | int word; | |
3141 | { | |
3142 | dcache_poke (remote_dcache, addr, word); | |
3143 | } | |
c5aa993b | 3144 | #endif /* 0 (unused?) */ |
c906108c SS |
3145 | \f |
3146 | ||
c5aa993b | 3147 | |
c906108c SS |
3148 | /* Return the number of hex digits in num. */ |
3149 | ||
3150 | static int | |
3151 | hexnumlen (num) | |
3152 | ULONGEST num; | |
3153 | { | |
3154 | int i; | |
3155 | ||
3156 | for (i = 0; num != 0; i++) | |
3157 | num >>= 4; | |
3158 | ||
3159 | return max (i, 1); | |
3160 | } | |
3161 | ||
2df3850c | 3162 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3163 | |
3164 | static int | |
3165 | hexnumstr (buf, num) | |
3166 | char *buf; | |
3167 | ULONGEST num; | |
3168 | { | |
c906108c | 3169 | int len = hexnumlen (num); |
2df3850c JM |
3170 | return hexnumnstr (buf, num, len); |
3171 | } | |
3172 | ||
c906108c | 3173 | |
2df3850c | 3174 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3175 | |
2df3850c JM |
3176 | static int |
3177 | hexnumnstr (buf, num, width) | |
3178 | char *buf; | |
3179 | ULONGEST num; | |
3180 | int width; | |
3181 | { | |
3182 | int i; | |
3183 | ||
3184 | buf[width] = '\0'; | |
3185 | ||
3186 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3187 | { |
c5aa993b | 3188 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3189 | num >>= 4; |
3190 | } | |
3191 | ||
2df3850c | 3192 | return width; |
c906108c SS |
3193 | } |
3194 | ||
3195 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3196 | ||
3197 | static CORE_ADDR | |
3198 | remote_address_masked (addr) | |
3199 | CORE_ADDR addr; | |
3200 | { | |
3201 | if (remote_address_size > 0 | |
3202 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3203 | { | |
3204 | /* Only create a mask when that mask can safely be constructed | |
3205 | in a ULONGEST variable. */ | |
3206 | ULONGEST mask = 1; | |
3207 | mask = (mask << remote_address_size) - 1; | |
3208 | addr &= mask; | |
3209 | } | |
3210 | return addr; | |
3211 | } | |
3212 | ||
3213 | /* Determine whether the remote target supports binary downloading. | |
3214 | This is accomplished by sending a no-op memory write of zero length | |
3215 | to the target at the specified address. It does not suffice to send | |
3216 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3217 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3218 | ||
96baa820 JM |
3219 | NOTE: This can still lose if the serial line is not eight-bit |
3220 | clean. In cases like this, the user should clear "remote | |
3221 | X-packet". */ | |
3222 | ||
c906108c SS |
3223 | static void |
3224 | check_binary_download (addr) | |
3225 | CORE_ADDR addr; | |
3226 | { | |
96baa820 | 3227 | switch (remote_protocol_binary_download.support) |
c906108c | 3228 | { |
96baa820 JM |
3229 | case PACKET_DISABLE: |
3230 | break; | |
3231 | case PACKET_ENABLE: | |
3232 | break; | |
3233 | case PACKET_SUPPORT_UNKNOWN: | |
3234 | { | |
3235 | char *buf = alloca (PBUFSIZ); | |
3236 | char *p; | |
3237 | ||
3238 | p = buf; | |
3239 | *p++ = 'X'; | |
3240 | p += hexnumstr (p, (ULONGEST) addr); | |
3241 | *p++ = ','; | |
3242 | p += hexnumstr (p, (ULONGEST) 0); | |
3243 | *p++ = ':'; | |
3244 | *p = '\0'; | |
3245 | ||
3246 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3247 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3248 | |
96baa820 JM |
3249 | if (buf[0] == '\0') |
3250 | { | |
3251 | if (remote_debug) | |
3252 | fprintf_unfiltered (gdb_stdlog, | |
3253 | "binary downloading NOT suppported by target\n"); | |
3254 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3255 | } | |
3256 | else | |
3257 | { | |
3258 | if (remote_debug) | |
3259 | fprintf_unfiltered (gdb_stdlog, | |
3260 | "binary downloading suppported by target\n"); | |
3261 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3262 | } | |
3263 | break; | |
3264 | } | |
c906108c SS |
3265 | } |
3266 | } | |
3267 | ||
3268 | /* Write memory data directly to the remote machine. | |
3269 | This does not inform the data cache; the data cache uses this. | |
3270 | MEMADDR is the address in the remote memory space. | |
3271 | MYADDR is the address of the buffer in our space. | |
3272 | LEN is the number of bytes. | |
3273 | ||
917317f4 JM |
3274 | Returns number of bytes transferred, or 0 (setting errno) for |
3275 | error. Only transfer a single packet. */ | |
c906108c SS |
3276 | |
3277 | static int | |
917317f4 | 3278 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3279 | { |
917317f4 | 3280 | unsigned char *buf; |
c906108c | 3281 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3282 | unsigned char *p; |
3283 | unsigned char *plen; | |
c2d11a7d | 3284 | long sizeof_buf; |
917317f4 JM |
3285 | int plenlen; |
3286 | int todo; | |
3287 | int nr_bytes; | |
c906108c SS |
3288 | |
3289 | /* Verify that the target can support a binary download */ | |
3290 | check_binary_download (memaddr); | |
3291 | ||
917317f4 | 3292 | /* Determine the max packet size. */ |
11cf8741 | 3293 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3294 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3295 | buf = alloca (sizeof_buf); | |
c906108c | 3296 | |
7a292a7a | 3297 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3298 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3299 | ||
917317f4 JM |
3300 | /* construct "M"<memaddr>","<len>":" */ |
3301 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3302 | p = buf; | |
3303 | ||
3304 | /* Append [XM]. Compute a best guess of the number of bytes | |
3305 | actually transfered. */ | |
3306 | switch (remote_protocol_binary_download.support) | |
c906108c | 3307 | { |
917317f4 JM |
3308 | case PACKET_ENABLE: |
3309 | *p++ = 'X'; | |
3310 | /* Best guess at number of bytes that will fit. */ | |
3311 | todo = min (len, max_buf_size); | |
3312 | break; | |
3313 | case PACKET_DISABLE: | |
3314 | *p++ = 'M'; | |
3315 | /* num bytes that will fit */ | |
3316 | todo = min (len, max_buf_size / 2); | |
3317 | break; | |
3318 | case PACKET_SUPPORT_UNKNOWN: | |
3319 | internal_error ("remote_write_bytes: bad switch"); | |
3320 | } | |
3321 | ||
3322 | /* Append <memaddr> */ | |
3323 | memaddr = remote_address_masked (memaddr); | |
3324 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3325 | *p++ = ','; | |
3326 | ||
3327 | /* Append <len>. Retain the location/size of <len>. It may | |
3328 | need to be adjusted once the packet body has been created. */ | |
3329 | plen = p; | |
3330 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3331 | p += plenlen; | |
3332 | *p++ = ':'; | |
3333 | *p = '\0'; | |
3334 | ||
3335 | /* Append the packet body. */ | |
3336 | switch (remote_protocol_binary_download.support) | |
3337 | { | |
3338 | case PACKET_ENABLE: | |
3339 | /* Binary mode. Send target system values byte by byte, in | |
3340 | increasing byte addresses. Only escape certain critical | |
3341 | characters. */ | |
3342 | for (nr_bytes = 0; | |
3343 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3344 | nr_bytes++) | |
c906108c | 3345 | { |
917317f4 JM |
3346 | switch (myaddr[nr_bytes] & 0xff) |
3347 | { | |
3348 | case '$': | |
3349 | case '#': | |
3350 | case 0x7d: | |
3351 | /* These must be escaped */ | |
3352 | *p++ = 0x7d; | |
3353 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3354 | break; | |
3355 | default: | |
3356 | *p++ = myaddr[nr_bytes] & 0xff; | |
3357 | break; | |
3358 | } | |
c906108c | 3359 | } |
917317f4 | 3360 | if (nr_bytes < todo) |
c906108c | 3361 | { |
917317f4 JM |
3362 | /* Escape chars have filled up the buffer prematurely, |
3363 | and we have actually sent fewer bytes than planned. | |
3364 | Fix-up the length field of the packet. Use the same | |
3365 | number of characters as before. */ | |
3366 | ||
3367 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3368 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3369 | } |
917317f4 JM |
3370 | break; |
3371 | case PACKET_DISABLE: | |
3372 | /* Normal mode: Send target system values byte by byte, in | |
3373 | increasing byte addresses. Each byte is encoded as a two hex | |
3374 | value. */ | |
3375 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3376 | { |
917317f4 JM |
3377 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3378 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3379 | } |
917317f4 JM |
3380 | *p = '\0'; |
3381 | break; | |
3382 | case PACKET_SUPPORT_UNKNOWN: | |
3383 | internal_error ("remote_write_bytes: bad switch"); | |
c906108c | 3384 | } |
917317f4 JM |
3385 | |
3386 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3387 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3388 | |
3389 | if (buf[0] == 'E') | |
3390 | { | |
3391 | /* There is no correspondance between what the remote protocol | |
3392 | uses for errors and errno codes. We would like a cleaner way | |
3393 | of representing errors (big enough to include errno codes, | |
3394 | bfd_error codes, and others). But for now just return EIO. */ | |
3395 | errno = EIO; | |
3396 | return 0; | |
3397 | } | |
3398 | ||
3399 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3400 | bytes than we'd planned. */ | |
3401 | return nr_bytes; | |
c906108c SS |
3402 | } |
3403 | ||
3404 | /* Read memory data directly from the remote machine. | |
3405 | This does not use the data cache; the data cache uses this. | |
3406 | MEMADDR is the address in the remote memory space. | |
3407 | MYADDR is the address of the buffer in our space. | |
3408 | LEN is the number of bytes. | |
3409 | ||
3410 | Returns number of bytes transferred, or 0 for error. */ | |
3411 | ||
917317f4 JM |
3412 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3413 | remote targets) shouldn't attempt to read the entire buffer. | |
3414 | Instead it should read a single packet worth of data and then | |
3415 | return the byte size of that packet to the caller. The caller (its | |
3416 | caller and its callers caller ;-) already contains code for | |
3417 | handling partial reads. */ | |
3418 | ||
c906108c SS |
3419 | static int |
3420 | remote_read_bytes (memaddr, myaddr, len) | |
3421 | CORE_ADDR memaddr; | |
3422 | char *myaddr; | |
3423 | int len; | |
3424 | { | |
11cf8741 | 3425 | char *buf; |
c906108c | 3426 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3427 | long sizeof_buf; |
c906108c SS |
3428 | int origlen; |
3429 | ||
11cf8741 JM |
3430 | /* Create a buffer big enough for this packet. */ |
3431 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3432 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3433 | buf = alloca (sizeof_buf); | |
c906108c SS |
3434 | |
3435 | origlen = len; | |
3436 | while (len > 0) | |
3437 | { | |
c906108c SS |
3438 | char *p; |
3439 | int todo; | |
3440 | int i; | |
3441 | ||
c5aa993b | 3442 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3443 | |
3444 | /* construct "m"<memaddr>","<len>" */ | |
3445 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3446 | memaddr = remote_address_masked (memaddr); | |
3447 | p = buf; | |
3448 | *p++ = 'm'; | |
3449 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3450 | *p++ = ','; | |
3451 | p += hexnumstr (p, (ULONGEST) todo); | |
3452 | *p = '\0'; | |
3453 | ||
3454 | putpkt (buf); | |
c2d11a7d | 3455 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3456 | |
3457 | if (buf[0] == 'E') | |
3458 | { | |
3459 | /* There is no correspondance between what the remote protocol uses | |
3460 | for errors and errno codes. We would like a cleaner way of | |
3461 | representing errors (big enough to include errno codes, bfd_error | |
3462 | codes, and others). But for now just return EIO. */ | |
3463 | errno = EIO; | |
3464 | return 0; | |
3465 | } | |
3466 | ||
c5aa993b JM |
3467 | /* Reply describes memory byte by byte, |
3468 | each byte encoded as two hex characters. */ | |
c906108c SS |
3469 | |
3470 | p = buf; | |
3471 | for (i = 0; i < todo; i++) | |
3472 | { | |
3473 | if (p[0] == 0 || p[1] == 0) | |
3474 | /* Reply is short. This means that we were able to read | |
3475 | only part of what we wanted to. */ | |
3476 | return i + (origlen - len); | |
3477 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3478 | p += 2; | |
3479 | } | |
3480 | myaddr += todo; | |
3481 | memaddr += todo; | |
3482 | len -= todo; | |
3483 | } | |
3484 | return origlen; | |
3485 | } | |
3486 | \f | |
3487 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3488 | transferring to or from debugger address BUFFER. Write to inferior if |
3489 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
3490 | for error. */ | |
3491 | ||
3492 | #ifndef REMOTE_TRANSLATE_XFER_ADDRESS | |
3493 | #define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \ | |
3494 | (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN)) | |
3495 | #endif | |
c906108c SS |
3496 | |
3497 | /* ARGSUSED */ | |
3498 | static int | |
392a587b JM |
3499 | remote_xfer_memory (mem_addr, buffer, mem_len, should_write, target) |
3500 | CORE_ADDR mem_addr; | |
3501 | char *buffer; | |
3502 | int mem_len; | |
c906108c | 3503 | int should_write; |
c5aa993b | 3504 | struct target_ops *target; /* ignored */ |
c906108c | 3505 | { |
392a587b JM |
3506 | CORE_ADDR targ_addr; |
3507 | int targ_len; | |
3508 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); | |
3509 | if (targ_len <= 0) | |
c906108c | 3510 | return 0; |
c906108c | 3511 | |
392a587b JM |
3512 | return dcache_xfer_memory (remote_dcache, targ_addr, buffer, |
3513 | targ_len, should_write); | |
c906108c SS |
3514 | } |
3515 | ||
c5aa993b | 3516 | |
c906108c SS |
3517 | #if 0 |
3518 | /* Enable after 4.12. */ | |
3519 | ||
3520 | void | |
3521 | remote_search (len, data, mask, startaddr, increment, lorange, hirange | |
3522 | addr_found, data_found) | |
3523 | int len; | |
3524 | char *data; | |
3525 | char *mask; | |
3526 | CORE_ADDR startaddr; | |
3527 | int increment; | |
3528 | CORE_ADDR lorange; | |
3529 | CORE_ADDR hirange; | |
3530 | CORE_ADDR *addr_found; | |
3531 | char *data_found; | |
3532 | { | |
3533 | if (increment == -4 && len == 4) | |
3534 | { | |
3535 | long mask_long, data_long; | |
3536 | long data_found_long; | |
3537 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3538 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3539 | long returned_long[2]; |
3540 | char *p; | |
3541 | ||
3542 | mask_long = extract_unsigned_integer (mask, len); | |
3543 | data_long = extract_unsigned_integer (data, len); | |
3544 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3545 | putpkt (buf); | |
c2d11a7d | 3546 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3547 | if (buf[0] == '\0') |
3548 | { | |
3549 | /* The stub doesn't support the 't' request. We might want to | |
3550 | remember this fact, but on the other hand the stub could be | |
3551 | switched on us. Maybe we should remember it only until | |
3552 | the next "target remote". */ | |
3553 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3554 | hirange, addr_found, data_found); | |
3555 | return; | |
3556 | } | |
3557 | ||
3558 | if (buf[0] == 'E') | |
3559 | /* There is no correspondance between what the remote protocol uses | |
3560 | for errors and errno codes. We would like a cleaner way of | |
3561 | representing errors (big enough to include errno codes, bfd_error | |
3562 | codes, and others). But for now just use EIO. */ | |
3563 | memory_error (EIO, startaddr); | |
3564 | p = buf; | |
3565 | addr_we_found = 0; | |
3566 | while (*p != '\0' && *p != ',') | |
3567 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3568 | if (*p == '\0') | |
3569 | error ("Protocol error: short return for search"); | |
3570 | ||
3571 | data_found_long = 0; | |
3572 | while (*p != '\0' && *p != ',') | |
3573 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3574 | /* Ignore anything after this comma, for future extensions. */ | |
3575 | ||
3576 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3577 | { | |
3578 | *addr_found = 0; | |
3579 | return; | |
3580 | } | |
3581 | ||
3582 | *addr_found = addr_we_found; | |
3583 | *data_found = store_unsigned_integer (data_we_found, len); | |
3584 | return; | |
3585 | } | |
3586 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3587 | hirange, addr_found, data_found); | |
3588 | } | |
3589 | #endif /* 0 */ | |
3590 | \f | |
3591 | static void | |
3592 | remote_files_info (ignore) | |
3593 | struct target_ops *ignore; | |
3594 | { | |
3595 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3596 | } | |
3597 | \f | |
3598 | /* Stuff for dealing with the packets which are part of this protocol. | |
3599 | See comment at top of file for details. */ | |
3600 | ||
3601 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3602 | ||
3603 | static int | |
3604 | readchar (timeout) | |
3605 | int timeout; | |
3606 | { | |
3607 | int ch; | |
3608 | ||
3609 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3610 | ||
2acceee2 JM |
3611 | if (ch >= 0) |
3612 | return (ch & 0x7f); | |
3613 | ||
3614 | switch ((enum serial_rc) ch) | |
c906108c SS |
3615 | { |
3616 | case SERIAL_EOF: | |
2acceee2 | 3617 | target_mourn_inferior (); |
c906108c | 3618 | error ("Remote connection closed"); |
2acceee2 | 3619 | /* no return */ |
c906108c SS |
3620 | case SERIAL_ERROR: |
3621 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3622 | /* no return */ |
c906108c | 3623 | case SERIAL_TIMEOUT: |
2acceee2 | 3624 | break; |
c906108c | 3625 | } |
2acceee2 | 3626 | return ch; |
c906108c SS |
3627 | } |
3628 | ||
3629 | /* Send the command in BUF to the remote machine, and read the reply | |
3630 | into BUF. Report an error if we get an error reply. */ | |
3631 | ||
3632 | static void | |
c2d11a7d JM |
3633 | remote_send (char *buf, |
3634 | long sizeof_buf) | |
c906108c SS |
3635 | { |
3636 | putpkt (buf); | |
c2d11a7d | 3637 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3638 | |
3639 | if (buf[0] == 'E') | |
3640 | error ("Remote failure reply: %s", buf); | |
3641 | } | |
3642 | ||
3643 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3644 | string notation. */ | |
3645 | ||
3646 | static void | |
3647 | print_packet (buf) | |
3648 | char *buf; | |
3649 | { | |
3650 | puts_filtered ("\""); | |
43e526b9 | 3651 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3652 | puts_filtered ("\""); |
3653 | } | |
3654 | ||
3655 | int | |
3656 | putpkt (buf) | |
3657 | char *buf; | |
3658 | { | |
3659 | return putpkt_binary (buf, strlen (buf)); | |
3660 | } | |
3661 | ||
3662 | /* Send a packet to the remote machine, with error checking. The data | |
3663 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3664 | to account for the $, # and checksum, and for a possible /0 if we are | |
3665 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3666 | ||
3667 | static int | |
3668 | putpkt_binary (buf, cnt) | |
3669 | char *buf; | |
3670 | int cnt; | |
3671 | { | |
3672 | int i; | |
3673 | unsigned char csum = 0; | |
11cf8741 | 3674 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3675 | long sizeof_junkbuf = PBUFSIZ; |
3676 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3677 | |
c906108c SS |
3678 | int ch; |
3679 | int tcount = 0; | |
3680 | char *p; | |
3681 | ||
3682 | /* Copy the packet into buffer BUF2, encapsulating it | |
3683 | and giving it a checksum. */ | |
3684 | ||
c906108c SS |
3685 | p = buf2; |
3686 | *p++ = '$'; | |
3687 | ||
3688 | for (i = 0; i < cnt; i++) | |
3689 | { | |
3690 | csum += buf[i]; | |
3691 | *p++ = buf[i]; | |
3692 | } | |
3693 | *p++ = '#'; | |
3694 | *p++ = tohex ((csum >> 4) & 0xf); | |
3695 | *p++ = tohex (csum & 0xf); | |
3696 | ||
3697 | /* Send it over and over until we get a positive ack. */ | |
3698 | ||
3699 | while (1) | |
3700 | { | |
3701 | int started_error_output = 0; | |
3702 | ||
3703 | if (remote_debug) | |
3704 | { | |
3705 | *p = '\0'; | |
43e526b9 JM |
3706 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3707 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3708 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3709 | gdb_flush (gdb_stdlog); |
c906108c SS |
3710 | } |
3711 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3712 | perror_with_name ("putpkt: write failed"); | |
3713 | ||
3714 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3715 | while (1) | |
3716 | { | |
3717 | ch = readchar (remote_timeout); | |
3718 | ||
c5aa993b | 3719 | if (remote_debug) |
c906108c SS |
3720 | { |
3721 | switch (ch) | |
3722 | { | |
3723 | case '+': | |
1216fa2c | 3724 | case '-': |
c906108c SS |
3725 | case SERIAL_TIMEOUT: |
3726 | case '$': | |
3727 | if (started_error_output) | |
3728 | { | |
3729 | putchar_unfiltered ('\n'); | |
3730 | started_error_output = 0; | |
3731 | } | |
3732 | } | |
3733 | } | |
3734 | ||
3735 | switch (ch) | |
3736 | { | |
3737 | case '+': | |
3738 | if (remote_debug) | |
0f71a2f6 | 3739 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3740 | return 1; |
1216fa2c AC |
3741 | case '-': |
3742 | if (remote_debug) | |
3743 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3744 | case SERIAL_TIMEOUT: |
c5aa993b | 3745 | tcount++; |
c906108c SS |
3746 | if (tcount > 3) |
3747 | return 0; | |
3748 | break; /* Retransmit buffer */ | |
3749 | case '$': | |
3750 | { | |
c5aa993b JM |
3751 | /* It's probably an old response, and we're out of sync. |
3752 | Just gobble up the packet and ignore it. */ | |
c2d11a7d | 3753 | getpkt (junkbuf, sizeof_junkbuf, 0); |
c5aa993b | 3754 | continue; /* Now, go look for + */ |
c906108c SS |
3755 | } |
3756 | default: | |
3757 | if (remote_debug) | |
3758 | { | |
3759 | if (!started_error_output) | |
3760 | { | |
3761 | started_error_output = 1; | |
0f71a2f6 | 3762 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3763 | } |
0f71a2f6 | 3764 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3765 | } |
3766 | continue; | |
3767 | } | |
3768 | break; /* Here to retransmit */ | |
3769 | } | |
3770 | ||
3771 | #if 0 | |
3772 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3773 | able to get out next time we call QUIT, without anything as |
3774 | violent as interrupt_query. If we want to provide a way out of | |
3775 | here without getting to the next QUIT, it should be based on | |
3776 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3777 | if (quit_flag) |
3778 | { | |
3779 | quit_flag = 0; | |
3780 | interrupt_query (); | |
3781 | } | |
3782 | #endif | |
3783 | } | |
3784 | } | |
3785 | ||
0f71a2f6 JM |
3786 | static int remote_cisco_mode; |
3787 | ||
c906108c SS |
3788 | /* Come here after finding the start of the frame. Collect the rest |
3789 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3790 | compression. No more than sizeof_buf-1 characters are read so that |
3791 | the buffer can be NUL terminated. | |
c906108c | 3792 | |
c2d11a7d JM |
3793 | Returns -1 on error, number of characters in buffer (ignoring the |
3794 | trailing NULL) on success. (could be extended to return one of the | |
3795 | SERIAL status indications). */ | |
3796 | ||
3797 | static long | |
3798 | read_frame (char *buf, | |
3799 | long sizeof_buf) | |
c906108c SS |
3800 | { |
3801 | unsigned char csum; | |
c2d11a7d | 3802 | long bc; |
c906108c SS |
3803 | int c; |
3804 | ||
3805 | csum = 0; | |
c2d11a7d | 3806 | bc = 0; |
c906108c SS |
3807 | |
3808 | while (1) | |
3809 | { | |
c2d11a7d | 3810 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 3811 | c = readchar (remote_timeout); |
c906108c SS |
3812 | switch (c) |
3813 | { | |
3814 | case SERIAL_TIMEOUT: | |
3815 | if (remote_debug) | |
0f71a2f6 | 3816 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3817 | return -1; |
c906108c SS |
3818 | case '$': |
3819 | if (remote_debug) | |
0f71a2f6 JM |
3820 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3821 | gdb_stdlog); | |
c2d11a7d | 3822 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
3823 | case '#': |
3824 | { | |
3825 | unsigned char pktcsum; | |
3826 | ||
c2d11a7d | 3827 | buf[bc] = '\0'; |
c906108c SS |
3828 | |
3829 | pktcsum = fromhex (readchar (remote_timeout)) << 4; | |
3830 | pktcsum |= fromhex (readchar (remote_timeout)); | |
3831 | ||
3832 | if (csum == pktcsum) | |
c2d11a7d | 3833 | return bc; |
c906108c | 3834 | |
c5aa993b | 3835 | if (remote_debug) |
c906108c | 3836 | { |
0f71a2f6 | 3837 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3838 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3839 | pktcsum, csum); |
3840 | fputs_filtered (buf, gdb_stdlog); | |
3841 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3842 | } |
c2d11a7d JM |
3843 | /* Number of characters in buffer ignoring trailing |
3844 | NUL. */ | |
3845 | return -1; | |
c906108c SS |
3846 | } |
3847 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
3848 | { |
3849 | int repeat; | |
3850 | csum += c; | |
c906108c | 3851 | |
c2c6d25f JM |
3852 | if (remote_cisco_mode == 0) |
3853 | { | |
3854 | c = readchar (remote_timeout); | |
3855 | csum += c; | |
3856 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
3857 | } | |
3858 | else | |
3859 | { | |
3860 | /* Cisco's run-length encoding variant uses two | |
3861 | hex chars to represent the repeat count. */ | |
3862 | ||
3863 | c = readchar (remote_timeout); | |
3864 | csum += c; | |
3865 | repeat = fromhex (c) << 4; | |
3866 | c = readchar (remote_timeout); | |
3867 | csum += c; | |
3868 | repeat += fromhex (c); | |
3869 | } | |
c906108c | 3870 | |
c2d11a7d JM |
3871 | /* The character before ``*'' is repeated. */ |
3872 | ||
c2c6d25f | 3873 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
3874 | && bc > 0 |
3875 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 3876 | { |
c2d11a7d JM |
3877 | memset (&buf[bc], buf[bc - 1], repeat); |
3878 | bc += repeat; | |
c2c6d25f JM |
3879 | continue; |
3880 | } | |
3881 | ||
c2d11a7d | 3882 | buf[bc] = '\0'; |
c2c6d25f JM |
3883 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
3884 | puts_filtered (buf); | |
3885 | puts_filtered ("\n"); | |
c2d11a7d | 3886 | return -1; |
c2c6d25f | 3887 | } |
c906108c | 3888 | default: |
c2d11a7d | 3889 | if (bc < sizeof_buf - 1) |
c906108c | 3890 | { |
c2d11a7d | 3891 | buf[bc++] = c; |
c906108c SS |
3892 | csum += c; |
3893 | continue; | |
3894 | } | |
3895 | ||
c2d11a7d | 3896 | buf[bc] = '\0'; |
c906108c SS |
3897 | puts_filtered ("Remote packet too long: "); |
3898 | puts_filtered (buf); | |
3899 | puts_filtered ("\n"); | |
3900 | ||
c2d11a7d | 3901 | return -1; |
c906108c SS |
3902 | } |
3903 | } | |
3904 | } | |
3905 | ||
3906 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
3907 | store it in BUF. If FOREVER, wait forever rather than timing out; |
3908 | this is used (in synchronous mode) to wait for a target that is is | |
3909 | executing user code to stop. */ | |
d9fcf2fb JM |
3910 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
3911 | don't have to change all the calls to getpkt to deal with the | |
3912 | return value, because at the moment I don't know what the right | |
3913 | thing to do it for those. */ | |
c906108c | 3914 | void |
c2d11a7d JM |
3915 | getpkt (char *buf, |
3916 | long sizeof_buf, | |
3917 | int forever) | |
d9fcf2fb JM |
3918 | { |
3919 | int timed_out; | |
3920 | ||
3921 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
3922 | } | |
3923 | ||
3924 | ||
3925 | /* Read a packet from the remote machine, with error checking, and | |
3926 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
3927 | this is used (in synchronous mode) to wait for a target that is is | |
3928 | executing user code to stop. If FOREVER == 0, this function is | |
3929 | allowed to time out gracefully and return an indication of this to | |
3930 | the caller. */ | |
3931 | int | |
3932 | getpkt_sane (char *buf, | |
3933 | long sizeof_buf, | |
3934 | int forever) | |
c906108c SS |
3935 | { |
3936 | int c; | |
3937 | int tries; | |
3938 | int timeout; | |
3939 | int val; | |
3940 | ||
c5aa993b | 3941 | strcpy (buf, "timeout"); |
c906108c SS |
3942 | |
3943 | if (forever) | |
3944 | { | |
c906108c | 3945 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
3946 | } |
3947 | ||
3948 | else | |
3949 | timeout = remote_timeout; | |
3950 | ||
3951 | #define MAX_TRIES 3 | |
3952 | ||
3953 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
3954 | { | |
3955 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
3956 | continuously, but if it pauses, we'll get a zero from readchar |
3957 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
3958 | |
3959 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
3960 | After that, we expect characters to arrive at a brisk pace. They |
3961 | should show up within remote_timeout intervals. */ | |
c906108c SS |
3962 | |
3963 | do | |
3964 | { | |
3965 | c = readchar (timeout); | |
3966 | ||
3967 | if (c == SERIAL_TIMEOUT) | |
3968 | { | |
2acceee2 | 3969 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 3970 | { |
2acceee2 | 3971 | QUIT; |
c906108c SS |
3972 | target_mourn_inferior (); |
3973 | error ("Watchdog has expired. Target detached.\n"); | |
3974 | } | |
c906108c | 3975 | if (remote_debug) |
0f71a2f6 | 3976 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
3977 | goto retry; |
3978 | } | |
3979 | } | |
3980 | while (c != '$'); | |
3981 | ||
3982 | /* We've found the start of a packet, now collect the data. */ | |
3983 | ||
c2d11a7d | 3984 | val = read_frame (buf, sizeof_buf); |
c906108c | 3985 | |
c2d11a7d | 3986 | if (val >= 0) |
c906108c SS |
3987 | { |
3988 | if (remote_debug) | |
43e526b9 JM |
3989 | { |
3990 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
3991 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
3992 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3993 | } | |
c906108c | 3994 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 3995 | return 0; |
c906108c SS |
3996 | } |
3997 | ||
3998 | /* Try the whole thing again. */ | |
3999 | retry: | |
4000 | SERIAL_WRITE (remote_desc, "-", 1); | |
4001 | } | |
4002 | ||
4003 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4004 | ||
4005 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4006 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4007 | return 1; |
c906108c SS |
4008 | } |
4009 | \f | |
4010 | static void | |
4011 | remote_kill () | |
4012 | { | |
4013 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4014 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4015 | if (kill_kludge) | |
4016 | { | |
4017 | kill_kludge = 0; | |
4018 | target_mourn_inferior (); | |
4019 | return; | |
4020 | } | |
4021 | ||
4022 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4023 | speaking terms with the remote system. */ | |
c5aa993b | 4024 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4025 | |
4026 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4027 | we do or not. For the existing stubs, kill is a noop. */ | |
4028 | target_mourn_inferior (); | |
4029 | } | |
4030 | ||
43ff13b4 JM |
4031 | /* Async version of remote_kill. */ |
4032 | static void | |
4033 | remote_async_kill () | |
4034 | { | |
4035 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4036 | if (target_is_async_p ()) |
c2c6d25f | 4037 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4038 | |
4039 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4040 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4041 | if (kill_kludge) | |
4042 | { | |
4043 | kill_kludge = 0; | |
4044 | target_mourn_inferior (); | |
4045 | return; | |
4046 | } | |
4047 | ||
4048 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4049 | speaking terms with the remote system. */ | |
c5aa993b | 4050 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4051 | |
4052 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4053 | we do or not. For the existing stubs, kill is a noop. */ | |
4054 | target_mourn_inferior (); | |
4055 | } | |
4056 | ||
c906108c SS |
4057 | static void |
4058 | remote_mourn () | |
4059 | { | |
4060 | remote_mourn_1 (&remote_ops); | |
4061 | } | |
4062 | ||
53a5351d JM |
4063 | static void |
4064 | remote_async_mourn () | |
4065 | { | |
4066 | remote_mourn_1 (&remote_async_ops); | |
4067 | } | |
4068 | ||
c906108c SS |
4069 | static void |
4070 | extended_remote_mourn () | |
4071 | { | |
4072 | /* We do _not_ want to mourn the target like this; this will | |
4073 | remove the extended remote target from the target stack, | |
4074 | and the next time the user says "run" it'll fail. | |
4075 | ||
4076 | FIXME: What is the right thing to do here? */ | |
4077 | #if 0 | |
4078 | remote_mourn_1 (&extended_remote_ops); | |
4079 | #endif | |
4080 | } | |
4081 | ||
4082 | /* Worker function for remote_mourn. */ | |
4083 | static void | |
4084 | remote_mourn_1 (target) | |
4085 | struct target_ops *target; | |
4086 | { | |
4087 | unpush_target (target); | |
4088 | generic_mourn_inferior (); | |
4089 | } | |
4090 | ||
4091 | /* In the extended protocol we want to be able to do things like | |
4092 | "run" and have them basically work as expected. So we need | |
4093 | a special create_inferior function. | |
4094 | ||
4095 | FIXME: One day add support for changing the exec file | |
4096 | we're debugging, arguments and an environment. */ | |
4097 | ||
4098 | static void | |
4099 | extended_remote_create_inferior (exec_file, args, env) | |
4100 | char *exec_file; | |
4101 | char *args; | |
4102 | char **env; | |
4103 | { | |
4104 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4105 | the remote server. */ | |
4106 | remove_breakpoints (); | |
4107 | ||
4108 | /* Now restart the remote server. */ | |
4109 | extended_remote_restart (); | |
4110 | ||
4111 | /* Now put the breakpoints back in. This way we're safe if the | |
4112 | restart function works via a unix fork on the remote side. */ | |
4113 | insert_breakpoints (); | |
4114 | ||
4115 | /* Clean up from the last time we were running. */ | |
4116 | clear_proceed_status (); | |
4117 | ||
4118 | /* Let the remote process run. */ | |
4119 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4120 | } | |
4121 | ||
43ff13b4 JM |
4122 | /* Async version of extended_remote_create_inferior. */ |
4123 | static void | |
4124 | extended_remote_async_create_inferior (exec_file, args, env) | |
4125 | char *exec_file; | |
4126 | char *args; | |
4127 | char **env; | |
4128 | { | |
4129 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4130 | the remote server. */ | |
4131 | remove_breakpoints (); | |
4132 | ||
4133 | /* If running asynchronously, register the target file descriptor | |
4134 | with the event loop. */ | |
2acceee2 JM |
4135 | if (event_loop_p && target_can_async_p ()) |
4136 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4137 | |
4138 | /* Now restart the remote server. */ | |
4139 | extended_remote_restart (); | |
4140 | ||
4141 | /* Now put the breakpoints back in. This way we're safe if the | |
4142 | restart function works via a unix fork on the remote side. */ | |
4143 | insert_breakpoints (); | |
4144 | ||
4145 | /* Clean up from the last time we were running. */ | |
4146 | clear_proceed_status (); | |
4147 | ||
4148 | /* Let the remote process run. */ | |
4149 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4150 | } | |
c906108c | 4151 | \f |
c5aa993b | 4152 | |
c906108c SS |
4153 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4154 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4155 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4156 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4157 | the standard routines that are in mem-break.c. */ | |
4158 | ||
4159 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4160 | the choice of breakpoint instruction affects target program design and | |
4161 | vice versa, and by making it user-tweakable, the special code here | |
4162 | goes away and we need fewer special GDB configurations. */ | |
4163 | ||
4164 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4165 | #define REMOTE_BREAKPOINT | |
4166 | #endif | |
4167 | ||
4168 | #ifdef REMOTE_BREAKPOINT | |
4169 | ||
4170 | /* If the target isn't bi-endian, just pretend it is. */ | |
4171 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4172 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4173 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4174 | #endif | |
4175 | ||
4176 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4177 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4178 | ||
4179 | #endif /* REMOTE_BREAKPOINT */ | |
4180 | ||
4181 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4182 | support. We read the contents of the target location and stash it, | |
4183 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4184 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4185 | memory allocated for saving the target contents. It is guaranteed | |
4186 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4187 | is accomplished via BREAKPOINT_MAX). */ | |
4188 | ||
4189 | static int | |
4190 | remote_insert_breakpoint (addr, contents_cache) | |
4191 | CORE_ADDR addr; | |
4192 | char *contents_cache; | |
4193 | { | |
4194 | #ifdef REMOTE_BREAKPOINT | |
4195 | int val; | |
96baa820 JM |
4196 | #endif |
4197 | int bp_size; | |
4198 | ||
4199 | /* Try the "Z" packet if it is not already disabled. | |
4200 | If it succeeds, then set the support to PACKET_ENABLE. | |
4201 | If it fails, and the user has explicitly requested the Z support | |
4202 | then report an error, otherwise, mark it disabled and go on. */ | |
4203 | ||
4204 | if ((remote_protocol_Z.support == PACKET_ENABLE) | |
4205 | || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN)) | |
4206 | { | |
e514a9d6 JM |
4207 | char *buf = alloca (PBUFSIZ); |
4208 | char *p = buf; | |
96baa820 JM |
4209 | |
4210 | addr = remote_address_masked (addr); | |
4211 | *(p++) = 'Z'; | |
4212 | *(p++) = '0'; | |
4213 | *(p++) = ','; | |
4214 | p += hexnumstr (p, (ULONGEST) addr); | |
4215 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4216 | sprintf (p, ",%d", bp_size); | |
4217 | ||
4218 | putpkt (buf); | |
c2d11a7d | 4219 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4220 | |
4221 | if (buf[0] != '\0') | |
4222 | { | |
4223 | remote_protocol_Z.support = PACKET_ENABLE; | |
4224 | return (buf[0] == 'E'); | |
4225 | } | |
4226 | ||
4227 | /* The stub does not support the 'Z' request. If the user has | |
4228 | explicitly requested the Z support, or if the stub previously | |
4229 | said it supported the packet, this is an error, | |
4230 | otherwise, mark it disabled. */ | |
4231 | ||
4232 | else if (remote_protocol_Z.support == PACKET_ENABLE) | |
4233 | { | |
4234 | error ("Protocol error: Z packet not recognized by stub"); | |
4235 | } | |
4236 | else | |
4237 | { | |
4238 | remote_protocol_Z.support = PACKET_DISABLE; | |
4239 | } | |
4240 | } | |
c906108c | 4241 | |
96baa820 | 4242 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4243 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4244 | ||
4245 | if (val == 0) | |
4246 | { | |
4247 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4248 | val = target_write_memory (addr, (char *) big_break_insn, | |
4249 | sizeof big_break_insn); | |
4250 | else | |
4251 | val = target_write_memory (addr, (char *) little_break_insn, | |
4252 | sizeof little_break_insn); | |
4253 | } | |
4254 | ||
4255 | return val; | |
4256 | #else | |
4257 | return memory_insert_breakpoint (addr, contents_cache); | |
4258 | #endif /* REMOTE_BREAKPOINT */ | |
4259 | } | |
4260 | ||
4261 | static int | |
4262 | remote_remove_breakpoint (addr, contents_cache) | |
4263 | CORE_ADDR addr; | |
4264 | char *contents_cache; | |
4265 | { | |
96baa820 JM |
4266 | int bp_size; |
4267 | ||
4268 | if ((remote_protocol_Z.support == PACKET_ENABLE) | |
4269 | || (remote_protocol_Z.support == PACKET_SUPPORT_UNKNOWN)) | |
4270 | { | |
e514a9d6 JM |
4271 | char *buf = alloca (PBUFSIZ); |
4272 | char *p = buf; | |
96baa820 JM |
4273 | |
4274 | *(p++) = 'z'; | |
4275 | *(p++) = '0'; | |
4276 | *(p++) = ','; | |
4277 | ||
4278 | addr = remote_address_masked (addr); | |
4279 | p += hexnumstr (p, (ULONGEST) addr); | |
4280 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4281 | sprintf (p, ",%d", bp_size); | |
4282 | ||
4283 | putpkt (buf); | |
c2d11a7d | 4284 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4285 | |
4286 | return (buf[0] == 'E'); | |
4287 | } | |
4288 | ||
c906108c SS |
4289 | #ifdef REMOTE_BREAKPOINT |
4290 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4291 | #else | |
4292 | return memory_remove_breakpoint (addr, contents_cache); | |
4293 | #endif /* REMOTE_BREAKPOINT */ | |
4294 | } | |
4295 | ||
96baa820 JM |
4296 | #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS |
4297 | int | |
4298 | remote_insert_watchpoint (addr, len, type) | |
4299 | CORE_ADDR addr; | |
4300 | int len; | |
4301 | int type; | |
4302 | { | |
e514a9d6 JM |
4303 | char *buf = alloca (PBUFSIZ); |
4304 | char *p; | |
96baa820 JM |
4305 | |
4306 | if (remote_protocol_Z.support == PACKET_DISABLE) | |
4307 | error ("Can't set hardware watchpoints without the 'Z' packet\n"); | |
4308 | ||
4309 | sprintf (buf, "Z%x,", type + 2 ); | |
4310 | p = strchr (buf, '\0'); | |
4311 | addr = remote_address_masked (addr); | |
4312 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4313 | sprintf (p, ",%x", len); |
96baa820 JM |
4314 | |
4315 | putpkt (buf); | |
c2d11a7d | 4316 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4317 | |
4318 | if (buf[0] == '\0' || buf [0] == 'E') | |
4319 | return -1; | |
4320 | ||
4321 | return 0; | |
4322 | } | |
4323 | ||
4324 | int | |
4325 | remote_remove_watchpoint (addr, len, type) | |
4326 | CORE_ADDR addr; | |
4327 | int len; | |
4328 | int type; | |
4329 | { | |
e514a9d6 JM |
4330 | char *buf = alloca (PBUFSIZ); |
4331 | char *p; | |
96baa820 JM |
4332 | |
4333 | sprintf (buf, "z%x,", type + 2 ); | |
4334 | p = strchr (buf, '\0'); | |
4335 | addr = remote_address_masked (addr); | |
4336 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4337 | sprintf (p, ",%x", len); |
96baa820 | 4338 | putpkt (buf); |
c2d11a7d | 4339 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4340 | |
4341 | if (buf[0] == '\0' || buf [0] == 'E') | |
4342 | return -1; | |
4343 | ||
4344 | return 0; | |
4345 | } | |
4346 | ||
4347 | int | |
4348 | remote_insert_hw_breakpoint (addr, len) | |
4349 | CORE_ADDR addr; | |
4350 | int len; | |
4351 | { | |
e514a9d6 JM |
4352 | char *buf = alloca (PBUFSIZ); |
4353 | char *p = buf; | |
96baa820 JM |
4354 | |
4355 | if (remote_protocol_Z.support == PACKET_DISABLE) | |
4356 | error ("Can't set hardware breakpoints without the 'Z' packet\n"); | |
4357 | ||
4358 | *(p++) = 'Z'; | |
4359 | *(p++) = '1'; | |
4360 | *(p++) = ','; | |
4361 | ||
4362 | addr = remote_address_masked (addr); | |
4363 | p += hexnumstr (p, (ULONGEST) addr); | |
4364 | *p = '\0'; | |
4365 | ||
4366 | putpkt (buf); | |
c2d11a7d | 4367 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4368 | |
4369 | if (buf[0] == '\0' || buf [0] == 'E') | |
4370 | return -1; | |
4371 | ||
4372 | return 0; | |
4373 | } | |
4374 | ||
4375 | int | |
4376 | remote_remove_hw_breakpoint (addr, len) | |
4377 | CORE_ADDR addr; | |
4378 | int len; | |
4379 | { | |
e514a9d6 JM |
4380 | char *buf = alloca (PBUFSIZ); |
4381 | char *p = buf; | |
96baa820 JM |
4382 | |
4383 | *(p++) = 'z'; | |
4384 | *(p++) = '1'; | |
4385 | *(p++) = ','; | |
4386 | ||
4387 | addr = remote_address_masked (addr); | |
4388 | p += hexnumstr (p, (ULONGEST) addr); | |
4389 | *p = '\0'; | |
4390 | ||
4391 | putpkt(buf); | |
c2d11a7d | 4392 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4393 | |
4394 | if (buf[0] == '\0' || buf [0] == 'E') | |
4395 | return -1; | |
4396 | ||
4397 | return 0; | |
4398 | } | |
4399 | #endif | |
4400 | ||
c906108c SS |
4401 | /* Some targets are only capable of doing downloads, and afterwards |
4402 | they switch to the remote serial protocol. This function provides | |
4403 | a clean way to get from the download target to the remote target. | |
4404 | It's basically just a wrapper so that we don't have to expose any | |
4405 | of the internal workings of remote.c. | |
4406 | ||
4407 | Prior to calling this routine, you should shutdown the current | |
4408 | target code, else you will get the "A program is being debugged | |
4409 | already..." message. Usually a call to pop_target() suffices. */ | |
4410 | ||
4411 | void | |
4412 | push_remote_target (name, from_tty) | |
4413 | char *name; | |
4414 | int from_tty; | |
4415 | { | |
4416 | printf_filtered ("Switching to remote protocol\n"); | |
4417 | remote_open (name, from_tty); | |
4418 | } | |
4419 | ||
4420 | /* Other targets want to use the entire remote serial module but with | |
4421 | certain remote_ops overridden. */ | |
4422 | ||
4423 | void | |
4424 | open_remote_target (name, from_tty, target, extended_p) | |
4425 | char *name; | |
4426 | int from_tty; | |
4427 | struct target_ops *target; | |
4428 | int extended_p; | |
4429 | { | |
4430 | printf_filtered ("Selecting the %sremote protocol\n", | |
4431 | (extended_p ? "extended-" : "")); | |
4432 | remote_open_1 (name, from_tty, target, extended_p); | |
4433 | } | |
4434 | ||
4435 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4436 | ||
c5aa993b JM |
4437 | static unsigned long crc32_table[256] = |
4438 | {0, 0}; | |
c906108c SS |
4439 | |
4440 | static unsigned long | |
4441 | crc32 (buf, len, crc) | |
4442 | unsigned char *buf; | |
4443 | int len; | |
4444 | unsigned int crc; | |
4445 | { | |
c5aa993b | 4446 | if (!crc32_table[1]) |
c906108c SS |
4447 | { |
4448 | /* Initialize the CRC table and the decoding table. */ | |
4449 | int i, j; | |
4450 | unsigned int c; | |
4451 | ||
4452 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4453 | { |
4454 | for (c = i << 24, j = 8; j > 0; --j) | |
4455 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4456 | crc32_table[i] = c; | |
4457 | } | |
c906108c SS |
4458 | } |
4459 | ||
4460 | while (len--) | |
4461 | { | |
4462 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4463 | buf++; | |
4464 | } | |
4465 | return crc; | |
4466 | } | |
4467 | ||
4468 | /* compare-sections command | |
4469 | ||
4470 | With no arguments, compares each loadable section in the exec bfd | |
4471 | with the same memory range on the target, and reports mismatches. | |
4472 | Useful for verifying the image on the target against the exec file. | |
4473 | Depends on the target understanding the new "qCRC:" request. */ | |
4474 | ||
e514a9d6 JM |
4475 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4476 | target method (target verify memory) and generic version of the | |
4477 | actual command. This will allow other high-level code (especially | |
4478 | generic_load()) to make use of this target functionality. */ | |
4479 | ||
c906108c SS |
4480 | static void |
4481 | compare_sections_command (args, from_tty) | |
4482 | char *args; | |
4483 | int from_tty; | |
4484 | { | |
4485 | asection *s; | |
4486 | unsigned long host_crc, target_crc; | |
4487 | extern bfd *exec_bfd; | |
4488 | struct cleanup *old_chain; | |
085dd6e6 JM |
4489 | char *tmp; |
4490 | char *sectdata; | |
4491 | char *sectname; | |
4492 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4493 | bfd_size_type size; |
4494 | bfd_vma lma; | |
4495 | int matched = 0; | |
4496 | int mismatched = 0; | |
4497 | ||
4498 | if (!exec_bfd) | |
4499 | error ("command cannot be used without an exec file"); | |
4500 | if (!current_target.to_shortname || | |
4501 | strcmp (current_target.to_shortname, "remote") != 0) | |
4502 | error ("command can only be used with remote target"); | |
4503 | ||
c5aa993b | 4504 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4505 | { |
4506 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4507 | continue; /* skip non-loadable section */ |
c906108c SS |
4508 | |
4509 | size = bfd_get_section_size_before_reloc (s); | |
4510 | if (size == 0) | |
c5aa993b | 4511 | continue; /* skip zero-length section */ |
c906108c SS |
4512 | |
4513 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4514 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4515 | continue; /* not the section selected by user */ |
c906108c | 4516 | |
c5aa993b | 4517 | matched = 1; /* do this section */ |
c906108c SS |
4518 | lma = s->lma; |
4519 | /* FIXME: assumes lma can fit into long */ | |
4520 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4521 | putpkt (buf); | |
4522 | ||
4523 | /* be clever; compute the host_crc before waiting for target reply */ | |
4524 | sectdata = xmalloc (size); | |
4525 | old_chain = make_cleanup (free, sectdata); | |
4526 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |
4527 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4528 | ||
c2d11a7d | 4529 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4530 | if (buf[0] == 'E') |
4531 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4532 | sectname, lma, lma + size); | |
4533 | if (buf[0] != 'C') | |
4534 | error ("remote target does not support this operation"); | |
4535 | ||
4536 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4537 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4538 | ||
d4f3574e SS |
4539 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4540 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4541 | if (host_crc == target_crc) |
4542 | printf_filtered ("matched.\n"); | |
4543 | else | |
c5aa993b JM |
4544 | { |
4545 | printf_filtered ("MIS-MATCHED!\n"); | |
4546 | mismatched++; | |
4547 | } | |
c906108c SS |
4548 | |
4549 | do_cleanups (old_chain); | |
4550 | } | |
4551 | if (mismatched > 0) | |
4552 | warning ("One or more sections of the remote executable does not match\n\ | |
4553 | the loaded file\n"); | |
4554 | if (args && !matched) | |
4555 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4556 | } | |
4557 | ||
4558 | static int | |
4559 | remote_query (query_type, buf, outbuf, bufsiz) | |
4560 | int query_type; | |
4561 | char *buf; | |
4562 | char *outbuf; | |
4563 | int *bufsiz; | |
4564 | { | |
4565 | int i; | |
085dd6e6 | 4566 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4567 | char *p2 = &buf2[0]; |
c906108c | 4568 | |
c5aa993b | 4569 | if (!bufsiz) |
c906108c SS |
4570 | error ("null pointer to remote bufer size specified"); |
4571 | ||
cce74817 | 4572 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4573 | the caller know and return what the minimum size is */ |
4574 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4575 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4576 | { |
4577 | *bufsiz = PBUFSIZ; | |
4578 | return -1; | |
4579 | } | |
4580 | ||
4581 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4582 | if (!remote_desc) |
c906108c SS |
4583 | error ("remote query is only available after target open"); |
4584 | ||
4585 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4586 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4587 | error ("invalid remote query type"); |
4588 | ||
c5aa993b | 4589 | if (!buf) |
c906108c SS |
4590 | error ("null remote query specified"); |
4591 | ||
c5aa993b | 4592 | if (!outbuf) |
c906108c SS |
4593 | error ("remote query requires a buffer to receive data"); |
4594 | ||
4595 | outbuf[0] = '\0'; | |
4596 | ||
4597 | *p2++ = 'q'; | |
4598 | *p2++ = query_type; | |
4599 | ||
4600 | /* we used one buffer char for the remote protocol q command and another | |
4601 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4602 | plus one extra in case we are debugging (remote_debug), | |
4603 | we have PBUFZIZ - 7 left to pack the query string */ | |
4604 | i = 0; | |
c5aa993b | 4605 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4606 | { |
4607 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4608 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4609 | error ("illegal characters in query string"); | |
c906108c SS |
4610 | |
4611 | *p2++ = buf[i]; | |
4612 | i++; | |
4613 | } | |
4614 | *p2 = buf[i]; | |
4615 | ||
c5aa993b | 4616 | if (buf[i]) |
c906108c SS |
4617 | error ("query larger than available buffer"); |
4618 | ||
4619 | i = putpkt (buf2); | |
c5aa993b JM |
4620 | if (i < 0) |
4621 | return i; | |
c906108c | 4622 | |
c2d11a7d | 4623 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4624 | |
4625 | return 0; | |
4626 | } | |
4627 | ||
96baa820 JM |
4628 | static void |
4629 | remote_rcmd (char *command, | |
d9fcf2fb | 4630 | struct ui_file *outbuf) |
96baa820 JM |
4631 | { |
4632 | int i; | |
4633 | char *buf = alloca (PBUFSIZ); | |
4634 | char *p = buf; | |
4635 | ||
4636 | if (!remote_desc) | |
4637 | error ("remote rcmd is only available after target open"); | |
4638 | ||
7be570e7 JM |
4639 | /* Send a NULL command across as an empty command */ |
4640 | if (command == NULL) | |
4641 | command = ""; | |
4642 | ||
96baa820 JM |
4643 | /* The query prefix */ |
4644 | strcpy (buf, "qRcmd,"); | |
4645 | p = strchr (buf, '\0'); | |
4646 | ||
4647 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4648 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4649 | ||
4650 | /* Encode the actual command */ | |
4651 | for (i = 0; command[i]; i++) | |
4652 | { | |
4653 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4654 | *p++ = tohex (command[i] & 0xf); | |
4655 | } | |
4656 | *p = '\0'; | |
4657 | ||
4658 | if (putpkt (buf) < 0) | |
4659 | error ("Communication problem with target\n"); | |
4660 | ||
4661 | /* get/display the response */ | |
4662 | while (1) | |
4663 | { | |
4664 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4665 | buf[0] = '\0'; | |
c2d11a7d | 4666 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4667 | if (buf[0] == '\0') |
4668 | error ("Target does not support this command\n"); | |
4669 | if (buf[0] == 'O' && buf[1] != 'K') | |
4670 | { | |
4671 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4672 | continue; | |
4673 | } | |
4674 | if (strcmp (buf, "OK") == 0) | |
4675 | break; | |
7be570e7 JM |
4676 | if (strlen (buf) == 3 && buf[0] == 'E' |
4677 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4678 | { | |
4679 | error ("Protocol error with Rcmd"); | |
4680 | } | |
96baa820 JM |
4681 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4682 | { | |
4683 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4684 | fputc_unfiltered (c, outbuf); | |
4685 | } | |
4686 | break; | |
4687 | } | |
4688 | } | |
4689 | ||
c906108c SS |
4690 | static void |
4691 | packet_command (args, from_tty) | |
4692 | char *args; | |
4693 | int from_tty; | |
4694 | { | |
085dd6e6 | 4695 | char *buf = alloca (PBUFSIZ); |
c906108c | 4696 | |
c5aa993b | 4697 | if (!remote_desc) |
c906108c SS |
4698 | error ("command can only be used with remote target"); |
4699 | ||
c5aa993b | 4700 | if (!args) |
c906108c SS |
4701 | error ("remote-packet command requires packet text as argument"); |
4702 | ||
4703 | puts_filtered ("sending: "); | |
4704 | print_packet (args); | |
4705 | puts_filtered ("\n"); | |
4706 | putpkt (args); | |
4707 | ||
c2d11a7d | 4708 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4709 | puts_filtered ("received: "); |
4710 | print_packet (buf); | |
4711 | puts_filtered ("\n"); | |
4712 | } | |
4713 | ||
4714 | #if 0 | |
4715 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4716 | ||
c5aa993b | 4717 | static void display_thread_info PARAMS ((struct gdb_ext_thread_info * info)); |
c906108c SS |
4718 | |
4719 | static void threadset_test_cmd PARAMS ((char *cmd, int tty)); | |
4720 | ||
4721 | static void threadalive_test PARAMS ((char *cmd, int tty)); | |
4722 | ||
4723 | static void threadlist_test_cmd PARAMS ((char *cmd, int tty)); | |
4724 | ||
c5aa993b | 4725 | int get_and_display_threadinfo PARAMS ((threadref * ref)); |
c906108c SS |
4726 | |
4727 | static void threadinfo_test_cmd PARAMS ((char *cmd, int tty)); | |
4728 | ||
c5aa993b | 4729 | static int thread_display_step PARAMS ((threadref * ref, void *context)); |
c906108c SS |
4730 | |
4731 | static void threadlist_update_test_cmd PARAMS ((char *cmd, int tty)); | |
4732 | ||
4733 | static void init_remote_threadtests PARAMS ((void)); | |
4734 | ||
c5aa993b | 4735 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4736 | |
4737 | static void | |
4738 | threadset_test_cmd (cmd, tty) | |
4739 | char *cmd; | |
4740 | int tty; | |
4741 | { | |
4742 | int sample_thread = SAMPLE_THREAD; | |
4743 | ||
4744 | printf_filtered ("Remote threadset test\n"); | |
4745 | set_thread (sample_thread, 1); | |
4746 | } | |
4747 | ||
4748 | ||
4749 | static void | |
4750 | threadalive_test (cmd, tty) | |
4751 | char *cmd; | |
4752 | int tty; | |
4753 | { | |
4754 | int sample_thread = SAMPLE_THREAD; | |
4755 | ||
4756 | if (remote_thread_alive (sample_thread)) | |
4757 | printf_filtered ("PASS: Thread alive test\n"); | |
4758 | else | |
4759 | printf_filtered ("FAIL: Thread alive test\n"); | |
4760 | } | |
4761 | ||
4762 | void output_threadid PARAMS ((char *title, threadref * ref)); | |
4763 | ||
4764 | void | |
4765 | output_threadid (title, ref) | |
4766 | char *title; | |
4767 | threadref *ref; | |
4768 | { | |
4769 | char hexid[20]; | |
4770 | ||
4771 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4772 | hexid[16] = 0; | |
4773 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4774 | } | |
4775 | ||
4776 | static void | |
4777 | threadlist_test_cmd (cmd, tty) | |
4778 | char *cmd; | |
4779 | int tty; | |
4780 | { | |
4781 | int startflag = 1; | |
4782 | threadref nextthread; | |
4783 | int done, result_count; | |
4784 | threadref threadlist[3]; | |
4785 | ||
4786 | printf_filtered ("Remote Threadlist test\n"); | |
4787 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4788 | &result_count, &threadlist[0])) | |
4789 | printf_filtered ("FAIL: threadlist test\n"); | |
4790 | else | |
4791 | { | |
4792 | threadref *scan = threadlist; | |
4793 | threadref *limit = scan + result_count; | |
4794 | ||
4795 | while (scan < limit) | |
4796 | output_threadid (" thread ", scan++); | |
4797 | } | |
4798 | } | |
4799 | ||
4800 | void | |
4801 | display_thread_info (info) | |
4802 | struct gdb_ext_thread_info *info; | |
4803 | { | |
4804 | output_threadid ("Threadid: ", &info->threadid); | |
4805 | printf_filtered ("Name: %s\n ", info->shortname); | |
4806 | printf_filtered ("State: %s\n", info->display); | |
4807 | printf_filtered ("other: %s\n\n", info->more_display); | |
4808 | } | |
4809 | ||
4810 | int | |
4811 | get_and_display_threadinfo (ref) | |
4812 | threadref *ref; | |
4813 | { | |
4814 | int result; | |
4815 | int set; | |
4816 | struct gdb_ext_thread_info threadinfo; | |
4817 | ||
4818 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4819 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4820 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4821 | display_thread_info (&threadinfo); | |
4822 | return result; | |
4823 | } | |
4824 | ||
4825 | static void | |
4826 | threadinfo_test_cmd (cmd, tty) | |
4827 | char *cmd; | |
4828 | int tty; | |
4829 | { | |
4830 | int athread = SAMPLE_THREAD; | |
4831 | threadref thread; | |
4832 | int set; | |
4833 | ||
4834 | int_to_threadref (&thread, athread); | |
4835 | printf_filtered ("Remote Threadinfo test\n"); | |
4836 | if (!get_and_display_threadinfo (&thread)) | |
4837 | printf_filtered ("FAIL cannot get thread info\n"); | |
4838 | } | |
4839 | ||
4840 | static int | |
4841 | thread_display_step (ref, context) | |
4842 | threadref *ref; | |
4843 | void *context; | |
4844 | { | |
4845 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4846 | return get_and_display_threadinfo (ref); | |
4847 | } | |
4848 | ||
4849 | static void | |
4850 | threadlist_update_test_cmd (cmd, tty) | |
4851 | char *cmd; | |
4852 | int tty; | |
4853 | { | |
4854 | printf_filtered ("Remote Threadlist update test\n"); | |
4855 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4856 | } | |
4857 | ||
4858 | static void | |
4859 | init_remote_threadtests (void) | |
4860 | { | |
4861 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4862 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4863 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4864 | "Fetch and display info about one thread"); | |
4865 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4866 | "Test setting to a different thread"); | |
4867 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4868 | "Iterate through updating all remote thread info"); | |
4869 | add_com ("talive", class_obscure, threadalive_test, | |
4870 | " Remote thread alive test "); | |
4871 | } | |
4872 | ||
4873 | #endif /* 0 */ | |
4874 | ||
4875 | static void | |
4876 | init_remote_ops () | |
4877 | { | |
c5aa993b | 4878 | remote_ops.to_shortname = "remote"; |
c906108c | 4879 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4880 | remote_ops.to_doc = |
c906108c | 4881 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
4882 | Specify the serial device it is connected to\n\ |
4883 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
4884 | remote_ops.to_open = remote_open; |
4885 | remote_ops.to_close = remote_close; | |
c906108c | 4886 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4887 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4888 | remote_ops.to_wait = remote_wait; |
4889 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4890 | remote_ops.to_store_registers = remote_store_registers; | |
4891 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4892 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4893 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4894 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4895 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4896 | remote_ops.to_kill = remote_kill; |
4897 | remote_ops.to_load = generic_load; | |
c906108c SS |
4898 | remote_ops.to_mourn_inferior = remote_mourn; |
4899 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4900 | remote_ops.to_find_new_threads = remote_threads_info; |
c906108c SS |
4901 | remote_ops.to_stop = remote_stop; |
4902 | remote_ops.to_query = remote_query; | |
96baa820 | 4903 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 4904 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
4905 | remote_ops.to_has_all_memory = 1; |
4906 | remote_ops.to_has_memory = 1; | |
4907 | remote_ops.to_has_stack = 1; | |
4908 | remote_ops.to_has_registers = 1; | |
4909 | remote_ops.to_has_execution = 1; | |
4910 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4911 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4912 | } |
4913 | ||
4914 | /* Set up the extended remote vector by making a copy of the standard | |
4915 | remote vector and adding to it. */ | |
4916 | ||
4917 | static void | |
4918 | init_extended_remote_ops () | |
4919 | { | |
4920 | extended_remote_ops = remote_ops; | |
4921 | ||
0f71a2f6 | 4922 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4923 | extended_remote_ops.to_longname = |
c906108c | 4924 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4925 | extended_remote_ops.to_doc = |
c906108c SS |
4926 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4927 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4928 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4929 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4930 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4931 | } |
4932 | ||
4933 | /* | |
4934 | * Command: info remote-process | |
4935 | * | |
4936 | * This implements Cisco's version of the "info proc" command. | |
4937 | * | |
4938 | * This query allows the target stub to return an arbitrary string | |
4939 | * (or strings) giving arbitrary information about the target process. | |
4940 | * This is optional; the target stub isn't required to implement it. | |
4941 | * | |
4942 | * Syntax: qfProcessInfo request first string | |
4943 | * qsProcessInfo request subsequent string | |
4944 | * reply: 'O'<hex-encoded-string> | |
4945 | * 'l' last reply (empty) | |
4946 | */ | |
4947 | ||
4948 | static void | |
c2d11a7d | 4949 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 4950 | { |
085dd6e6 | 4951 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
4952 | |
4953 | if (remote_desc == 0) | |
4954 | error ("Command can only be used when connected to the remote target."); | |
4955 | ||
4956 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 4957 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 4958 | if (buf[0] == 0) |
c5aa993b | 4959 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
4960 | |
4961 | if (buf[0] == 'E') | |
4962 | error ("info proc: target error."); | |
4963 | ||
c5aa993b | 4964 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
4965 | { |
4966 | remote_console_output (&buf[1]); | |
4967 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 4968 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
4969 | } |
4970 | } | |
4971 | ||
4972 | /* | |
4973 | * Target Cisco | |
4974 | */ | |
4975 | ||
4976 | static void | |
c2d11a7d | 4977 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
4978 | { |
4979 | if (name == 0) | |
4980 | error ( | |
c5aa993b | 4981 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
4982 | device is attached to the remote system (e.g. host:port)."); |
4983 | ||
6426a772 JM |
4984 | /* See FIXME above */ |
4985 | wait_forever_enabled_p = 1; | |
4986 | ||
0f71a2f6 JM |
4987 | target_preopen (from_tty); |
4988 | ||
4989 | unpush_target (&remote_cisco_ops); | |
4990 | ||
4991 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
4992 | ||
4993 | remote_desc = SERIAL_OPEN (name); | |
4994 | if (!remote_desc) | |
4995 | perror_with_name (name); | |
4996 | ||
4997 | /* | |
4998 | * If a baud rate was specified on the gdb command line it will | |
4999 | * be greater than the initial value of -1. If it is, use it otherwise | |
5000 | * default to 9600 | |
5001 | */ | |
5002 | ||
5003 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5004 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5005 | { |
5006 | SERIAL_CLOSE (remote_desc); | |
5007 | perror_with_name (name); | |
5008 | } | |
5009 | ||
5010 | SERIAL_RAW (remote_desc); | |
5011 | ||
5012 | /* If there is something sitting in the buffer we might take it as a | |
5013 | response to a command, which would be bad. */ | |
5014 | SERIAL_FLUSH_INPUT (remote_desc); | |
5015 | ||
5016 | if (from_tty) | |
5017 | { | |
5018 | puts_filtered ("Remote debugging using "); | |
5019 | puts_filtered (name); | |
5020 | puts_filtered ("\n"); | |
5021 | } | |
5022 | ||
5023 | remote_cisco_mode = 1; | |
5024 | ||
5025 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5026 | ||
5a2468f5 | 5027 | init_packet_config (&remote_protocol_P); |
96baa820 | 5028 | init_packet_config (&remote_protocol_Z); |
0f71a2f6 | 5029 | |
c5aa993b | 5030 | general_thread = -2; |
0f71a2f6 JM |
5031 | continue_thread = -2; |
5032 | ||
5033 | /* Force remote_write_bytes to check whether target supports | |
5034 | binary downloading. */ | |
96baa820 | 5035 | init_packet_config (&remote_protocol_binary_download); |
0f71a2f6 JM |
5036 | |
5037 | /* Without this, some commands which require an active target (such | |
5038 | as kill) won't work. This variable serves (at least) double duty | |
5039 | as both the pid of the target process (if it has such), and as a | |
5040 | flag indicating that a target is active. These functions should | |
5041 | be split out into seperate variables, especially since GDB will | |
5042 | someday have a notion of debugging several processes. */ | |
5043 | inferior_pid = MAGIC_NULL_PID; | |
5044 | ||
5045 | /* Start the remote connection; if error (0), discard this target. */ | |
5046 | ||
c5aa993b JM |
5047 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5048 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5049 | RETURN_MASK_ALL)) |
5050 | { | |
5051 | pop_target (); | |
5052 | return; | |
5053 | } | |
5054 | } | |
5055 | ||
5056 | static void | |
c2d11a7d | 5057 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5058 | { |
5059 | remote_cisco_mode = 0; | |
5060 | remote_close (quitting); | |
5061 | } | |
5062 | ||
c5aa993b JM |
5063 | static void |
5064 | remote_cisco_mourn | |
5065 | PARAMS ((void)) | |
0f71a2f6 JM |
5066 | { |
5067 | remote_mourn_1 (&remote_cisco_ops); | |
5068 | } | |
5069 | ||
c5aa993b JM |
5070 | enum |
5071 | { | |
5072 | READ_MORE, | |
5073 | FATAL_ERROR, | |
5074 | ENTER_DEBUG, | |
0f71a2f6 | 5075 | DISCONNECT_TELNET |
c5aa993b JM |
5076 | } |
5077 | minitelnet_return; | |
0f71a2f6 JM |
5078 | |
5079 | /* shared between readsocket() and readtty() */ | |
5080 | static char *tty_input; | |
5081 | ||
5082 | static int escape_count; | |
5083 | static int echo_check; | |
5084 | extern int quit_flag; | |
5085 | ||
5086 | static int | |
c2d11a7d | 5087 | readsocket (void) |
0f71a2f6 JM |
5088 | { |
5089 | int data; | |
5090 | ||
5091 | /* Loop until the socket doesn't have any more data */ | |
5092 | ||
c5aa993b | 5093 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5094 | { |
5095 | /* Check for the escape sequence */ | |
c5aa993b | 5096 | if (data == '|') |
0f71a2f6 JM |
5097 | { |
5098 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5099 | if (++escape_count == 4) |
0f71a2f6 JM |
5100 | { |
5101 | return ENTER_DEBUG; | |
5102 | } | |
c5aa993b JM |
5103 | else |
5104 | { /* This is a '|', but not the fourth in a row. | |
5105 | Continue without echoing it. If it isn't actually | |
5106 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5107 | continue; |
5108 | } | |
5109 | } | |
c5aa993b JM |
5110 | else |
5111 | /* Not a '|' */ | |
5112 | { | |
0f71a2f6 JM |
5113 | /* Ensure any pending '|'s are flushed. */ |
5114 | ||
c5aa993b JM |
5115 | for (; escape_count > 0; escape_count--) |
5116 | putchar ('|'); | |
0f71a2f6 | 5117 | } |
0f71a2f6 | 5118 | |
c5aa993b JM |
5119 | if (data == '\r') /* If this is a return character, */ |
5120 | continue; /* - just supress it. */ | |
5121 | ||
5122 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5123 | { |
5124 | if (tty_input[echo_check] == data) | |
5125 | { | |
c5aa993b JM |
5126 | echo_check++; /* Character matched user input: */ |
5127 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5128 | } |
c5aa993b JM |
5129 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5130 | { /* End of the line (and of echo checking). */ | |
5131 | echo_check = -1; /* No more echo supression */ | |
5132 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5133 | } |
5134 | else | |
c5aa993b JM |
5135 | { /* Failed check for echo of user input. |
5136 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5137 | int j; |
5138 | ||
c5aa993b | 5139 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5140 | putchar (tty_input[j]); |
5141 | echo_check = -1; | |
5142 | } | |
5143 | } | |
c5aa993b | 5144 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5145 | } |
5146 | ||
c5aa993b JM |
5147 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5148 | return READ_MORE; /* Try to read some more */ | |
5149 | else | |
5150 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5151 | } |
5152 | ||
5153 | static int | |
c2d11a7d | 5154 | readtty (void) |
0f71a2f6 | 5155 | { |
0f71a2f6 JM |
5156 | int tty_bytecount; |
5157 | ||
5158 | /* First, read a buffer full from the terminal */ | |
5159 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5160 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5161 | { |
5162 | perror ("readtty: read failed"); | |
5163 | return FATAL_ERROR; | |
5164 | } | |
5165 | ||
5166 | /* Remove a quoted newline. */ | |
5167 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5168 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5169 | { | |
c5aa993b JM |
5170 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5171 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5172 | } |
5173 | ||
5174 | /* Turn trailing newlines into returns */ | |
5175 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5176 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5177 | |
5178 | /* If the line consists of a ~, enter debugging mode. */ | |
5179 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5180 | return ENTER_DEBUG; | |
5181 | ||
5182 | /* Make this a zero terminated string and write it out */ | |
5183 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5184 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5185 | { |
5186 | perror_with_name ("readtty: write failed"); | |
5187 | return FATAL_ERROR; | |
5188 | } | |
5189 | ||
5190 | return READ_MORE; | |
5191 | } | |
5192 | ||
5193 | static int | |
c2d11a7d | 5194 | minitelnet (void) |
0f71a2f6 JM |
5195 | { |
5196 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5197 | int tablesize; /* max number of FDs for select */ |
5198 | int status; | |
5199 | int quit_count = 0; | |
0f71a2f6 JM |
5200 | |
5201 | extern int escape_count; /* global shared by readsocket */ | |
5202 | extern int echo_check; /* ditto */ | |
5203 | ||
5204 | escape_count = 0; | |
c5aa993b | 5205 | echo_check = -1; |
0f71a2f6 JM |
5206 | |
5207 | tablesize = 8 * sizeof (input); | |
5208 | ||
c5aa993b | 5209 | for (;;) |
0f71a2f6 JM |
5210 | { |
5211 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5212 | this must be done *before* the select as there may be |
5213 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5214 | |
c5aa993b | 5215 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5216 | { |
5217 | error ("Debugging terminated by communications error"); | |
5218 | } | |
c5aa993b | 5219 | else if (status != READ_MORE) |
0f71a2f6 JM |
5220 | { |
5221 | return (status); | |
5222 | } | |
5223 | ||
c5aa993b | 5224 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5225 | |
5226 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5227 | |
0f71a2f6 | 5228 | FD_ZERO (&input); |
c5aa993b | 5229 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5230 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5231 | |
5232 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5233 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5234 | { |
5235 | error ("Communications error on select %d", errno); | |
5236 | } | |
5237 | ||
5238 | /* Handle Control-C typed */ | |
5239 | ||
c5aa993b | 5240 | if (quit_flag) |
0f71a2f6 JM |
5241 | { |
5242 | if ((++quit_count) == 2) | |
5243 | { | |
5244 | if (query ("Interrupt GDB? ")) | |
5245 | { | |
5246 | printf_filtered ("Interrupted by user.\n"); | |
5247 | return_to_top_level (RETURN_QUIT); | |
5248 | } | |
5249 | quit_count = 0; | |
5250 | } | |
5251 | quit_flag = 0; | |
5252 | ||
5253 | if (remote_break) | |
5254 | SERIAL_SEND_BREAK (remote_desc); | |
5255 | else | |
5256 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5257 | ||
5258 | continue; | |
5259 | } | |
5260 | ||
5261 | /* Handle console input */ | |
5262 | ||
c5aa993b | 5263 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5264 | { |
5265 | quit_count = 0; | |
5266 | echo_check = 0; | |
5267 | status = readtty (); | |
5268 | if (status == READ_MORE) | |
5269 | continue; | |
5270 | ||
5271 | return status; /* telnet session ended */ | |
5272 | } | |
5273 | } | |
5274 | } | |
5275 | ||
5276 | static int | |
c2d11a7d | 5277 | remote_cisco_wait (int pid, struct target_waitstatus *status) |
0f71a2f6 | 5278 | { |
c5aa993b | 5279 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5280 | { |
5281 | error ("Debugging session terminated by protocol error"); | |
5282 | } | |
5283 | putpkt ("?"); | |
5284 | return remote_wait (pid, status); | |
5285 | } | |
5286 | ||
5287 | static void | |
5288 | init_remote_cisco_ops () | |
5289 | { | |
5290 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5291 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5292 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5293 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5294 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5295 | remote_cisco_ops.to_open = remote_cisco_open; |
5296 | remote_cisco_ops.to_close = remote_cisco_close; | |
5297 | remote_cisco_ops.to_detach = remote_detach; | |
5298 | remote_cisco_ops.to_resume = remote_resume; | |
5299 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5300 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5301 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5302 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5303 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5304 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5305 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5306 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5307 | remote_cisco_ops.to_kill = remote_kill; |
5308 | remote_cisco_ops.to_load = generic_load; | |
5309 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5310 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5311 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
5312 | remote_cisco_ops.to_stratum = process_stratum; | |
5313 | remote_cisco_ops.to_has_all_memory = 1; | |
5314 | remote_cisco_ops.to_has_memory = 1; | |
5315 | remote_cisco_ops.to_has_stack = 1; | |
5316 | remote_cisco_ops.to_has_registers = 1; | |
5317 | remote_cisco_ops.to_has_execution = 1; | |
5318 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5319 | } |
5320 | ||
6426a772 JM |
5321 | static int |
5322 | remote_can_async_p (void) | |
5323 | { | |
5324 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5325 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5326 | } |
5327 | ||
5328 | static int | |
5329 | remote_is_async_p (void) | |
5330 | { | |
5331 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5332 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5333 | } |
5334 | ||
2acceee2 JM |
5335 | /* Pass the SERIAL event on and up to the client. One day this code |
5336 | will be able to delay notifying the client of an event until the | |
5337 | point where an entire packet has been received. */ | |
5338 | ||
5339 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5340 | static void *async_client_context; | |
5341 | static serial_event_ftype remote_async_serial_handler; | |
5342 | ||
6426a772 | 5343 | static void |
2acceee2 | 5344 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5345 | { |
2acceee2 JM |
5346 | /* Don't propogate error information up to the client. Instead let |
5347 | the client find out about the error by querying the target. */ | |
5348 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5349 | } | |
5350 | ||
5351 | static void | |
5352 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5353 | { | |
ed9a39eb JM |
5354 | if (current_target.to_async_mask_value == 0) |
5355 | internal_error ("Calling remote_async when async is masked"); | |
5356 | ||
2acceee2 JM |
5357 | if (callback != NULL) |
5358 | { | |
5359 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5360 | async_client_callback = callback; | |
5361 | async_client_context = context; | |
5362 | } | |
5363 | else | |
5364 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5365 | } |
5366 | ||
43ff13b4 JM |
5367 | /* Target async and target extended-async. |
5368 | ||
5369 | This are temporary targets, until it is all tested. Eventually | |
5370 | async support will be incorporated int the usual 'remote' | |
5371 | target. */ | |
5372 | ||
5373 | static void | |
c2d11a7d | 5374 | init_remote_async_ops (void) |
43ff13b4 JM |
5375 | { |
5376 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5377 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5378 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5379 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5380 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5381 | remote_async_ops.to_open = remote_async_open; |
5382 | remote_async_ops.to_close = remote_close; | |
5383 | remote_async_ops.to_detach = remote_async_detach; | |
5384 | remote_async_ops.to_resume = remote_async_resume; | |
5385 | remote_async_ops.to_wait = remote_async_wait; | |
5386 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5387 | remote_async_ops.to_store_registers = remote_store_registers; | |
5388 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5389 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5390 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5391 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5392 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5393 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5394 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5395 | remote_async_ops.to_kill = remote_async_kill; |
5396 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5397 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5398 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5399 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
43ff13b4 JM |
5400 | remote_async_ops.to_stop = remote_stop; |
5401 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5402 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5403 | remote_async_ops.to_stratum = process_stratum; |
5404 | remote_async_ops.to_has_all_memory = 1; | |
5405 | remote_async_ops.to_has_memory = 1; | |
5406 | remote_async_ops.to_has_stack = 1; | |
5407 | remote_async_ops.to_has_registers = 1; | |
5408 | remote_async_ops.to_has_execution = 1; | |
5409 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5410 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5411 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5412 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5413 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5414 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5415 | } |
5416 | ||
5417 | /* Set up the async extended remote vector by making a copy of the standard | |
5418 | remote vector and adding to it. */ | |
5419 | ||
5420 | static void | |
c2d11a7d | 5421 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5422 | { |
5423 | extended_async_remote_ops = remote_async_ops; | |
5424 | ||
5425 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5426 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5427 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5428 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5429 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5430 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5431 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5432 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5433 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5434 | } | |
5435 | ||
5a2468f5 | 5436 | static void |
c2d11a7d | 5437 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5438 | { |
5439 | ||
5440 | } | |
5441 | ||
5442 | ||
0f71a2f6 JM |
5443 | static void |
5444 | build_remote_gdbarch_data () | |
5445 | { | |
11cf8741 JM |
5446 | build_remote_packet_sizes (); |
5447 | ||
5448 | /* Cisco stuff */ | |
0f71a2f6 | 5449 | tty_input = xmalloc (PBUFSIZ); |
11cf8741 | 5450 | remote_address_size = TARGET_PTR_BIT; |
0f71a2f6 JM |
5451 | } |
5452 | ||
c906108c SS |
5453 | void |
5454 | _initialize_remote () | |
5455 | { | |
5a2468f5 JM |
5456 | static struct cmd_list_element *remote_set_cmdlist; |
5457 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5458 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5459 | |
0f71a2f6 JM |
5460 | /* architecture specific data */ |
5461 | build_remote_gdbarch_data (); | |
5462 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5463 | register_remote_packet_sizes (); |
5464 | register_gdbarch_swap (&remote_address_size, | |
5465 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5466 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5467 | ||
c906108c SS |
5468 | init_remote_ops (); |
5469 | add_target (&remote_ops); | |
5470 | ||
5471 | init_extended_remote_ops (); | |
5472 | add_target (&extended_remote_ops); | |
cce74817 | 5473 | |
43ff13b4 JM |
5474 | init_remote_async_ops (); |
5475 | add_target (&remote_async_ops); | |
5476 | ||
5477 | init_extended_async_remote_ops (); | |
5478 | add_target (&extended_async_remote_ops); | |
5479 | ||
0f71a2f6 JM |
5480 | init_remote_cisco_ops (); |
5481 | add_target (&remote_cisco_ops); | |
5482 | ||
c906108c SS |
5483 | #if 0 |
5484 | init_remote_threadtests (); | |
5485 | #endif | |
5486 | ||
5a2468f5 JM |
5487 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5488 | Remote protocol specific variables\n\ | |
5489 | Configure various remote-protocol specific variables such as\n\ | |
5490 | the packets being used", | |
cff3e48b | 5491 | &remote_set_cmdlist, "set remote ", |
5a2468f5 JM |
5492 | 0/*allow-unknown*/, &setlist); |
5493 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ | |
5494 | Remote protocol specific variables\n\ | |
5495 | Configure various remote-protocol specific variables such as\n\ | |
5496 | the packets being used", | |
cff3e48b | 5497 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5498 | 0/*allow-unknown*/, &showlist); |
5499 | ||
c5aa993b | 5500 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5501 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5502 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5503 | &cmdlist); |
5504 | ||
5505 | add_cmd ("packet", class_maintenance, packet_command, | |
5506 | "Send an arbitrary packet to a remote target.\n\ | |
5507 | maintenance packet TEXT\n\ | |
5508 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5509 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5510 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5511 | terminating `#' character and checksum.", | |
5512 | &maintenancelist); | |
5513 | ||
c5aa993b | 5514 | add_show_from_set |
c906108c | 5515 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5516 | var_boolean, (char *) &remote_break, |
c906108c SS |
5517 | "Set whether to send break if interrupted.\n", |
5518 | &setlist), | |
5519 | &showlist); | |
5520 | ||
11cf8741 JM |
5521 | /* Install commands for configuring memory read/write packets. */ |
5522 | ||
5523 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5524 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5525 | &setlist); | |
5526 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5527 | "Show the maximum number of bytes per memory write packet (deprecated).\n", | |
5528 | &showlist); | |
5529 | add_cmd ("memory-write-packet-size", no_class, | |
5530 | set_memory_write_packet_size, | |
5531 | "Set the maximum number of bytes per memory-write packet.\n" | |
5532 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5533 | "default packet size. The actual limit is further reduced\n" | |
5534 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5535 | "further restriction and ``limit'' to enable that restriction\n", | |
5536 | &remote_set_cmdlist); | |
5537 | add_cmd ("memory-read-packet-size", no_class, | |
5538 | set_memory_read_packet_size, | |
5539 | "Set the maximum number of bytes per memory-read packet.\n" | |
5540 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5541 | "default packet size. The actual limit is further reduced\n" | |
5542 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5543 | "further restriction and ``limit'' to enable that restriction\n", | |
5544 | &remote_set_cmdlist); | |
5545 | add_cmd ("memory-write-packet-size", no_class, | |
5546 | show_memory_write_packet_size, | |
5547 | "Show the maximum number of bytes per memory-write packet.\n", | |
5548 | &remote_show_cmdlist); | |
5549 | add_cmd ("memory-read-packet-size", no_class, | |
5550 | show_memory_read_packet_size, | |
5551 | "Show the maximum number of bytes per memory-read packet.\n", | |
5552 | &remote_show_cmdlist); | |
c906108c | 5553 | |
c5aa993b | 5554 | add_show_from_set |
c906108c | 5555 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5556 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5557 | "Set the maximum size of the address (in bits) \ |
5558 | in a memory packet.\n", | |
5559 | &setlist), | |
c5aa993b | 5560 | &showlist); |
c906108c | 5561 | |
96baa820 JM |
5562 | add_packet_config_cmd (&remote_protocol_binary_download, |
5563 | "X", "binary-download", | |
5564 | set_remote_protocol_binary_download_cmd, | |
5565 | show_remote_protocol_binary_download_cmd, | |
5566 | &remote_set_cmdlist, &remote_show_cmdlist); | |
5567 | #if 0 | |
5568 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5569 | compatibility. */ | |
c5aa993b | 5570 | add_show_from_set |
b83266a0 SS |
5571 | (add_set_cmd ("remotebinarydownload", no_class, |
5572 | var_boolean, (char *) &remote_binary_download, | |
5573 | "Set binary downloads.\n", &setlist), | |
5574 | &showlist); | |
96baa820 | 5575 | #endif |
0f71a2f6 JM |
5576 | |
5577 | add_info ("remote-process", remote_info_process, | |
5578 | "Query the remote system for process info."); | |
5579 | ||
5a2468f5 JM |
5580 | add_packet_config_cmd (&remote_protocol_P, "P", "set-register", |
5581 | set_remote_protocol_P_packet_cmd, | |
5582 | show_remote_protocol_P_packet_cmd, | |
5583 | &remote_set_cmdlist, &remote_show_cmdlist); | |
96baa820 JM |
5584 | |
5585 | add_packet_config_cmd (&remote_protocol_Z, "Z", "breakpoint", | |
5586 | set_remote_protocol_Z_packet_cmd, | |
5587 | show_remote_protocol_Z_packet_cmd, | |
5588 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 5589 | } |