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 | 39 | |
7a292a7a | 40 | #include <ctype.h> |
9846de1b | 41 | #include <sys/time.h> |
c906108c SS |
42 | #ifdef USG |
43 | #include <sys/types.h> | |
44 | #endif | |
45 | ||
43ff13b4 | 46 | #include "event-loop.h" |
c2c6d25f | 47 | #include "event-top.h" |
2acceee2 | 48 | #include "inf-loop.h" |
43ff13b4 | 49 | |
c906108c SS |
50 | #include <signal.h> |
51 | #include "serial.h" | |
52 | ||
53 | /* Prototypes for local functions */ | |
6426a772 JM |
54 | static void cleanup_sigint_signal_handler (void *dummy); |
55 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 56 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 57 | |
a14ed312 KB |
58 | static void handle_remote_sigint (int); |
59 | static void handle_remote_sigint_twice (int); | |
60 | static void async_remote_interrupt (gdb_client_data); | |
61 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 62 | |
a14ed312 | 63 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 64 | |
917317f4 | 65 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 66 | |
a14ed312 | 67 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 68 | |
a14ed312 | 69 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 70 | |
a14ed312 KB |
71 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
72 | int len, int should_write, | |
73 | struct target_ops *target); | |
c906108c | 74 | |
a14ed312 | 75 | static void remote_prepare_to_store (void); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_fetch_registers (int regno); |
c906108c | 78 | |
a14ed312 KB |
79 | static void remote_resume (int pid, int step, enum target_signal siggnal); |
80 | static void remote_async_resume (int pid, int step, | |
81 | enum target_signal siggnal); | |
82 | static int remote_start_remote (PTR); | |
c906108c | 83 | |
a14ed312 KB |
84 | static void remote_open (char *name, int from_tty); |
85 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 86 | |
a14ed312 KB |
87 | static void extended_remote_open (char *name, int from_tty); |
88 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 89 | |
a14ed312 KB |
90 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
91 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
92 | int extended_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 KB |
105 | static void extended_remote_create_inferior (char *, char *, char **); |
106 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 107 | |
a14ed312 | 108 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 109 | |
c2d11a7d | 110 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 111 | |
a14ed312 | 112 | static int readchar (int timeout); |
c906108c | 113 | |
a14ed312 KB |
114 | static int remote_wait (int pid, struct target_waitstatus *status); |
115 | static int remote_async_wait (int pid, struct target_waitstatus *status); | |
c906108c | 116 | |
a14ed312 KB |
117 | static void remote_kill (void); |
118 | static void remote_async_kill (void); | |
c906108c | 119 | |
a14ed312 | 120 | static int tohex (int nib); |
c906108c | 121 | |
a14ed312 KB |
122 | static void remote_detach (char *args, int from_tty); |
123 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt (int signo); |
c906108c | 126 | |
a14ed312 | 127 | static void remote_interrupt_twice (int signo); |
7a292a7a | 128 | |
a14ed312 | 129 | static void interrupt_query (void); |
c906108c | 130 | |
a14ed312 | 131 | static void set_thread (int, int); |
c906108c | 132 | |
a14ed312 | 133 | static int remote_thread_alive (int); |
c906108c | 134 | |
a14ed312 | 135 | static void get_offsets (void); |
c906108c | 136 | |
c2d11a7d | 137 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 138 | |
a14ed312 | 139 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 140 | |
a14ed312 | 141 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 142 | |
a14ed312 | 143 | static int hexnumlen (ULONGEST num); |
c906108c | 144 | |
a14ed312 | 145 | static void init_remote_ops (void); |
c906108c | 146 | |
a14ed312 | 147 | static void init_extended_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
150 | |
151 | static struct target_ops remote_cisco_ops; | |
152 | ||
a14ed312 | 153 | static void remote_stop (void); |
c906108c | 154 | |
a14ed312 | 155 | static int ishex (int ch, int *val); |
c906108c | 156 | |
a14ed312 | 157 | static int stubhex (int ch); |
c906108c | 158 | |
a14ed312 | 159 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 160 | |
a14ed312 | 161 | static int hexnumstr (char *, ULONGEST); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 164 | |
a14ed312 | 165 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 166 | |
a14ed312 | 167 | static void print_packet (char *); |
c906108c | 168 | |
a14ed312 | 169 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 170 | |
a14ed312 | 171 | static void compare_sections_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void packet_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 176 | |
a14ed312 | 177 | static int remote_current_thread (int oldpid); |
c906108c | 178 | |
a14ed312 | 179 | static void remote_find_new_threads (void); |
c906108c | 180 | |
a14ed312 | 181 | static void record_currthread (int currthread); |
c906108c | 182 | |
c906108c SS |
183 | /* exported functions */ |
184 | ||
a14ed312 | 185 | extern int fromhex (int a); |
c906108c | 186 | |
a14ed312 | 187 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 188 | |
a14ed312 | 189 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 190 | |
5a2468f5 | 191 | struct packet_config; |
5a2468f5 | 192 | |
a14ed312 | 193 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 194 | |
d471ea57 | 195 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 196 | |
c906108c SS |
197 | /* Define the target subroutine names */ |
198 | ||
a14ed312 | 199 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 200 | |
a14ed312 | 201 | void _initialize_remote (void); |
c906108c SS |
202 | |
203 | /* */ | |
204 | ||
205 | static struct target_ops remote_ops; | |
206 | ||
207 | static struct target_ops extended_remote_ops; | |
208 | ||
43ff13b4 JM |
209 | /* Temporary target ops. Just like the remote_ops and |
210 | extended_remote_ops, but with asynchronous support. */ | |
211 | static struct target_ops remote_async_ops; | |
212 | ||
213 | static struct target_ops extended_async_remote_ops; | |
214 | ||
6426a772 JM |
215 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
216 | ``forever'' still use the normal timeout mechanism. This is | |
217 | currently used by the ASYNC code to guarentee that target reads | |
218 | during the initial connect always time-out. Once getpkt has been | |
219 | modified to return a timeout indication and, in turn | |
220 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
221 | this can go away. */ | |
222 | static int wait_forever_enabled_p = 1; | |
223 | ||
224 | ||
c906108c SS |
225 | /* This variable chooses whether to send a ^C or a break when the user |
226 | requests program interruption. Although ^C is usually what remote | |
227 | systems expect, and that is the default here, sometimes a break is | |
228 | preferable instead. */ | |
229 | ||
230 | static int remote_break; | |
231 | ||
c906108c SS |
232 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
233 | remote_open knows that we don't have a file open when the program | |
234 | starts. */ | |
235 | static serial_t remote_desc = NULL; | |
236 | ||
0f71a2f6 JM |
237 | /* This is set by the target (thru the 'S' message) |
238 | to denote that the target is in kernel mode. */ | |
239 | static int cisco_kernel_mode = 0; | |
240 | ||
c906108c SS |
241 | /* This variable sets the number of bits in an address that are to be |
242 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
243 | leading zeros, the entire address would be sent. This variable | |
244 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
245 | initial implementation of remote.c restricted the address sent in | |
246 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
247 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
248 | address was never sent. Since fixing this bug may cause a break in | |
249 | some remote targets this variable is principly provided to | |
250 | facilitate backward compatibility. */ | |
251 | ||
252 | static int remote_address_size; | |
253 | ||
6426a772 JM |
254 | /* Tempoary to track who currently owns the terminal. See |
255 | target_async_terminal_* for more details. */ | |
256 | ||
257 | static int remote_async_terminal_ours_p; | |
258 | ||
11cf8741 JM |
259 | \f |
260 | /* This is the size (in chars) of the first response to the ``g'' | |
261 | packet. It is used as a heuristic when determining the maximum | |
262 | size of memory-read and memory-write packets. A target will | |
263 | typically only reserve a buffer large enough to hold the ``g'' | |
264 | packet. The size does not include packet overhead (headers and | |
265 | trailers). */ | |
266 | ||
267 | static long actual_register_packet_size; | |
268 | ||
269 | /* This is the maximum size (in chars) of a non read/write packet. It | |
270 | is also used as a cap on the size of read/write packets. */ | |
271 | ||
272 | static long remote_packet_size; | |
273 | /* compatibility. */ | |
274 | #define PBUFSIZ (remote_packet_size) | |
275 | ||
276 | /* User configurable variables for the number of characters in a | |
277 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
278 | default. Some targets need smaller values (fifo overruns, et.al.) | |
279 | and some users need larger values (speed up transfers). The | |
280 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
281 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
282 | negative - a hard limit). */ | |
283 | ||
284 | struct memory_packet_config | |
285 | { | |
286 | char *name; | |
287 | long size; | |
288 | int fixed_p; | |
289 | }; | |
290 | ||
291 | /* Compute the current size of a read/write packet. Since this makes | |
292 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
293 | ||
294 | static long | |
295 | get_memory_packet_size (struct memory_packet_config *config) | |
296 | { | |
297 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
298 | law?) that some hosts don't cope very well with large alloca() | |
299 | calls. Eventually the alloca() code will be replaced by calls to | |
300 | xmalloc() and make_cleanups() allowing this restriction to either | |
301 | be lifted or removed. */ | |
302 | #ifndef MAX_REMOTE_PACKET_SIZE | |
303 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
304 | #endif | |
305 | /* NOTE: 16 is just chosen at random. */ | |
306 | #ifndef MIN_REMOTE_PACKET_SIZE | |
307 | #define MIN_REMOTE_PACKET_SIZE 16 | |
308 | #endif | |
309 | long what_they_get; | |
310 | if (config->fixed_p) | |
311 | { | |
312 | if (config->size <= 0) | |
313 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
314 | else | |
315 | what_they_get = config->size; | |
316 | } | |
317 | else | |
318 | { | |
319 | what_they_get = remote_packet_size; | |
320 | /* Limit the packet to the size specified by the user. */ | |
321 | if (config->size > 0 | |
322 | && what_they_get > config->size) | |
323 | what_they_get = config->size; | |
324 | /* Limit it to the size of the targets ``g'' response. */ | |
325 | if (actual_register_packet_size > 0 | |
326 | && what_they_get > actual_register_packet_size) | |
327 | what_they_get = actual_register_packet_size; | |
328 | } | |
329 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
330 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
331 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
332 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
333 | return what_they_get; | |
334 | } | |
335 | ||
336 | /* Update the size of a read/write packet. If they user wants | |
337 | something really big then do a sanity check. */ | |
338 | ||
339 | static void | |
340 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
341 | { | |
342 | int fixed_p = config->fixed_p; | |
343 | long size = config->size; | |
344 | if (args == NULL) | |
345 | error ("Argument required (integer, `fixed' or `limited')."); | |
346 | else if (strcmp (args, "hard") == 0 | |
347 | || strcmp (args, "fixed") == 0) | |
348 | fixed_p = 1; | |
349 | else if (strcmp (args, "soft") == 0 | |
350 | || strcmp (args, "limit") == 0) | |
351 | fixed_p = 0; | |
352 | else | |
353 | { | |
354 | char *end; | |
355 | size = strtoul (args, &end, 0); | |
356 | if (args == end) | |
357 | error ("Invalid %s (bad syntax).", config->name); | |
358 | #if 0 | |
359 | /* Instead of explicitly capping the size of a packet to | |
360 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
361 | instead allowed to set the size to something arbitrarily | |
362 | large. */ | |
363 | if (size > MAX_REMOTE_PACKET_SIZE) | |
364 | error ("Invalid %s (too large).", config->name); | |
365 | #endif | |
366 | } | |
367 | /* Extra checks? */ | |
368 | if (fixed_p && !config->fixed_p) | |
369 | { | |
370 | if (! query ("The target may not be able to correctly handle a %s\n" | |
371 | "of %ld bytes. Change the packet size? ", | |
372 | config->name, size)) | |
373 | error ("Packet size not changed."); | |
374 | } | |
375 | /* Update the config. */ | |
376 | config->fixed_p = fixed_p; | |
377 | config->size = size; | |
378 | } | |
379 | ||
380 | static void | |
381 | show_memory_packet_size (struct memory_packet_config *config) | |
382 | { | |
383 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
384 | if (config->fixed_p) | |
385 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
386 | get_memory_packet_size (config)); | |
387 | else | |
388 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
389 | get_memory_packet_size (config)); | |
390 | } | |
391 | ||
392 | static struct memory_packet_config memory_write_packet_config = | |
393 | { | |
394 | "memory-write-packet-size", | |
395 | }; | |
396 | ||
397 | static void | |
398 | set_memory_write_packet_size (char *args, int from_tty) | |
399 | { | |
400 | set_memory_packet_size (args, &memory_write_packet_config); | |
401 | } | |
402 | ||
403 | static void | |
404 | show_memory_write_packet_size (char *args, int from_tty) | |
405 | { | |
406 | show_memory_packet_size (&memory_write_packet_config); | |
407 | } | |
408 | ||
409 | static long | |
410 | get_memory_write_packet_size (void) | |
411 | { | |
412 | return get_memory_packet_size (&memory_write_packet_config); | |
413 | } | |
414 | ||
415 | static struct memory_packet_config memory_read_packet_config = | |
416 | { | |
417 | "memory-read-packet-size", | |
418 | }; | |
419 | ||
420 | static void | |
421 | set_memory_read_packet_size (char *args, int from_tty) | |
422 | { | |
423 | set_memory_packet_size (args, &memory_read_packet_config); | |
424 | } | |
425 | ||
426 | static void | |
427 | show_memory_read_packet_size (char *args, int from_tty) | |
428 | { | |
429 | show_memory_packet_size (&memory_read_packet_config); | |
430 | } | |
431 | ||
432 | static long | |
433 | get_memory_read_packet_size (void) | |
434 | { | |
435 | long size = get_memory_packet_size (&memory_read_packet_config); | |
436 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
437 | extra buffer size argument before the memory read size can be | |
438 | increased beyond PBUFSIZ. */ | |
439 | if (size > PBUFSIZ) | |
440 | size = PBUFSIZ; | |
441 | return size; | |
442 | } | |
443 | ||
444 | /* Register packet size initialization. Since the bounds change when | |
445 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
446 | be multi-arched. */ | |
447 | ||
448 | static void | |
449 | register_remote_packet_sizes (void) | |
450 | { | |
451 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
452 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
453 | } | |
454 | ||
455 | static void | |
456 | build_remote_packet_sizes (void) | |
457 | { | |
c2d11a7d JM |
458 | /* Default maximum number of characters in a packet body. Many |
459 | remote stubs have a hardwired buffer size of 400 bytes | |
460 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
461 | as the maximum packet-size to ensure that the packet and an extra | |
462 | NUL character can always fit in the buffer. This stops GDB | |
463 | trashing stubs that try to squeeze an extra NUL into what is | |
464 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
465 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
466 | /* Should REGISTER_BYTES needs more space than the default, adjust |
467 | the size accordingly. Remember that each byte is encoded as two | |
468 | characters. 32 is the overhead for the packet header / | |
469 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
470 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
471 | little. */ | |
472 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
473 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
474 | ||
475 | /* This one is filled in when a ``g'' packet is received. */ | |
476 | actual_register_packet_size = 0; | |
477 | } | |
478 | \f | |
5a2468f5 JM |
479 | /* Generic configuration support for packets the stub optionally |
480 | supports. Allows the user to specify the use of the packet as well | |
481 | as allowing GDB to auto-detect support in the remote stub. */ | |
482 | ||
483 | enum packet_support | |
484 | { | |
485 | PACKET_SUPPORT_UNKNOWN = 0, | |
486 | PACKET_ENABLE, | |
487 | PACKET_DISABLE | |
488 | }; | |
489 | ||
5a2468f5 JM |
490 | struct packet_config |
491 | { | |
5a2468f5 JM |
492 | char *name; |
493 | char *title; | |
8e248173 | 494 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
495 | enum packet_support support; |
496 | }; | |
497 | ||
d471ea57 AC |
498 | /* Analyze a packet's return value and update the packet config |
499 | accordingly. */ | |
500 | ||
501 | enum packet_result | |
502 | { | |
503 | PACKET_ERROR, | |
504 | PACKET_OK, | |
505 | PACKET_UNKNOWN | |
506 | }; | |
507 | ||
5a2468f5 | 508 | static void |
d471ea57 | 509 | update_packet_config (struct packet_config *config) |
5a2468f5 | 510 | { |
d471ea57 AC |
511 | switch (config->detect) |
512 | { | |
513 | case CMD_AUTO_BOOLEAN_TRUE: | |
514 | config->support = PACKET_ENABLE; | |
515 | break; | |
516 | case CMD_AUTO_BOOLEAN_FALSE: | |
517 | config->support = PACKET_DISABLE; | |
518 | break; | |
519 | case CMD_AUTO_BOOLEAN_AUTO: | |
520 | config->support = PACKET_SUPPORT_UNKNOWN; | |
521 | break; | |
522 | } | |
5a2468f5 JM |
523 | } |
524 | ||
525 | static void | |
fba45db2 | 526 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
527 | { |
528 | char *support = "internal-error"; | |
529 | switch (config->support) | |
530 | { | |
531 | case PACKET_ENABLE: | |
532 | support = "enabled"; | |
533 | break; | |
534 | case PACKET_DISABLE: | |
535 | support = "disabled"; | |
536 | break; | |
537 | case PACKET_SUPPORT_UNKNOWN: | |
538 | support = "unknown"; | |
539 | break; | |
540 | } | |
541 | switch (config->detect) | |
542 | { | |
8e248173 | 543 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
544 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
545 | config->name, config->title, support); | |
546 | break; | |
8e248173 AC |
547 | case CMD_AUTO_BOOLEAN_TRUE: |
548 | case CMD_AUTO_BOOLEAN_FALSE: | |
549 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 550 | config->name, config->title, support); |
8e248173 | 551 | break; |
5a2468f5 JM |
552 | } |
553 | } | |
554 | ||
555 | static void | |
d471ea57 AC |
556 | add_packet_config_cmd (struct packet_config *config, |
557 | char *name, | |
558 | char *title, | |
559 | void (*set_func) (char *args, int from_tty, | |
560 | struct cmd_list_element * | |
561 | c), | |
562 | void (*show_func) (char *name, | |
563 | int from_tty), | |
564 | struct cmd_list_element **set_remote_list, | |
565 | struct cmd_list_element **show_remote_list, | |
566 | int legacy) | |
567 | { | |
568 | struct cmd_list_element *set_cmd; | |
569 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
570 | char *set_doc; |
571 | char *show_doc; | |
d471ea57 | 572 | char *cmd_name; |
5a2468f5 JM |
573 | config->name = name; |
574 | config->title = title; | |
8e248173 AC |
575 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
576 | config->support = PACKET_SUPPORT_UNKNOWN; | |
5a2468f5 JM |
577 | asprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
578 | name, title); | |
579 | asprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
580 | name, title); | |
d471ea57 AC |
581 | /* set/show TITLE-packet {auto,on,off} */ |
582 | asprintf (&cmd_name, "%s-packet", title); | |
583 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, | |
584 | &config->detect, set_doc, | |
585 | set_remote_list); | |
586 | set_cmd->function.sfunc = set_func; | |
587 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
588 | show_remote_list); | |
589 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
590 | if (legacy) | |
591 | { | |
592 | char *legacy_name; | |
593 | asprintf (&legacy_name, "%s-packet", name); | |
594 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
595 | set_remote_list); | |
596 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
597 | show_remote_list); | |
598 | } | |
5a2468f5 JM |
599 | } |
600 | ||
d471ea57 AC |
601 | static enum packet_result |
602 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 603 | { |
d471ea57 | 604 | if (buf[0] != '\0') |
5a2468f5 | 605 | { |
d471ea57 AC |
606 | /* The stub recognized the packet request. Check that the |
607 | operation succeeded. */ | |
608 | switch (config->support) | |
609 | { | |
610 | case PACKET_SUPPORT_UNKNOWN: | |
611 | if (remote_debug) | |
612 | fprintf_unfiltered (gdb_stdlog, | |
613 | "Packet %s (%s) is supported\n", | |
614 | config->name, config->title); | |
615 | config->support = PACKET_ENABLE; | |
616 | break; | |
617 | case PACKET_DISABLE: | |
618 | internal_error ("packet_ok: attempt to use a disabled packet"); | |
619 | break; | |
620 | case PACKET_ENABLE: | |
621 | break; | |
622 | } | |
623 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
624 | /* "OK" - definitly OK. */ | |
625 | return PACKET_OK; | |
626 | if (buf[0] == 'E' | |
627 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
628 | && buf[3] == '\0') | |
629 | /* "Enn" - definitly an error. */ | |
630 | return PACKET_ERROR; | |
631 | /* The packet may or may not be OK. Just assume it is */ | |
632 | return PACKET_OK; | |
633 | } | |
634 | else | |
635 | { | |
636 | /* The stub does not support the packet. */ | |
637 | switch (config->support) | |
638 | { | |
639 | case PACKET_ENABLE: | |
640 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
641 | /* If the stub previously indicated that the packet was | |
642 | supported then there is a protocol error.. */ | |
643 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
644 | config->name, config->title); | |
645 | else | |
646 | /* The user set it wrong. */ | |
647 | error ("Enabled packet %s (%s) not recognized by stub", | |
648 | config->name, config->title); | |
649 | break; | |
650 | case PACKET_SUPPORT_UNKNOWN: | |
651 | if (remote_debug) | |
652 | fprintf_unfiltered (gdb_stdlog, | |
653 | "Packet %s (%s) is NOT supported\n", | |
654 | config->name, config->title); | |
655 | config->support = PACKET_DISABLE; | |
656 | break; | |
657 | case PACKET_DISABLE: | |
658 | break; | |
659 | } | |
660 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
661 | } |
662 | } | |
663 | ||
664 | /* Should we try the 'P' (set register) request? */ | |
665 | ||
666 | static struct packet_config remote_protocol_P; | |
667 | ||
668 | static void | |
fba45db2 KB |
669 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
670 | struct cmd_list_element *c) | |
5a2468f5 | 671 | { |
d471ea57 | 672 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
673 | } |
674 | ||
675 | static void | |
fba45db2 | 676 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
677 | { |
678 | show_packet_config_cmd (&remote_protocol_P); | |
679 | } | |
680 | ||
d471ea57 AC |
681 | /* Should we try one of the 'Z' requests? */ |
682 | ||
683 | enum Z_packet_type | |
684 | { | |
685 | Z_PACKET_SOFTWARE_BP, | |
686 | Z_PACKET_HARDWARE_BP, | |
687 | Z_PACKET_WRITE_WP, | |
688 | Z_PACKET_READ_WP, | |
689 | Z_PACKET_ACCESS_WP, | |
690 | NR_Z_PACKET_TYPES | |
691 | }; | |
96baa820 | 692 | |
d471ea57 AC |
693 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
694 | ||
695 | /* FIXME: Instead of having all these boiler plate functions, the | |
696 | command callback should include a context argument. */ | |
697 | ||
698 | static void | |
699 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
700 | struct cmd_list_element *c) | |
701 | { | |
702 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
703 | } | |
704 | ||
705 | static void | |
706 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
707 | { | |
708 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
709 | } | |
710 | ||
711 | static void | |
712 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
713 | struct cmd_list_element *c) | |
714 | { | |
715 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
716 | } | |
717 | ||
718 | static void | |
719 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
720 | { | |
721 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
722 | } | |
723 | ||
724 | static void | |
725 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
726 | struct cmd_list_element *c) | |
727 | { | |
728 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
729 | } | |
730 | ||
731 | static void | |
732 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
733 | { | |
734 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
735 | } | |
736 | ||
737 | static void | |
738 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
739 | struct cmd_list_element *c) | |
740 | { | |
741 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
742 | } | |
743 | ||
744 | static void | |
745 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
746 | { | |
747 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
748 | } | |
749 | ||
750 | static void | |
751 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
752 | struct cmd_list_element *c) | |
753 | { | |
754 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
755 | } | |
756 | ||
757 | static void | |
758 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
759 | { | |
760 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
761 | } | |
762 | ||
763 | /* For compatibility with older distributions. Provide a ``set remote | |
764 | Z-packet ...'' command that updates all the Z packet types. */ | |
765 | ||
766 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
767 | |
768 | static void | |
fba45db2 KB |
769 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
770 | struct cmd_list_element *c) | |
96baa820 | 771 | { |
d471ea57 AC |
772 | int i; |
773 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
774 | { | |
775 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
776 | update_packet_config (&remote_protocol_Z[i]); | |
777 | } | |
96baa820 JM |
778 | } |
779 | ||
780 | static void | |
fba45db2 | 781 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 782 | { |
d471ea57 AC |
783 | int i; |
784 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
785 | { | |
786 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
787 | } | |
96baa820 JM |
788 | } |
789 | ||
790 | /* Should we try the 'X' (remote binary download) packet? | |
791 | ||
792 | This variable (available to the user via "set remote X-packet") | |
793 | dictates whether downloads are sent in binary (via the 'X' packet). | |
794 | We assume that the stub can, and attempt to do it. This will be | |
795 | cleared if the stub does not understand it. This switch is still | |
796 | needed, though in cases when the packet is supported in the stub, | |
797 | but the connection does not allow it (i.e., 7-bit serial connection | |
798 | only). */ | |
799 | ||
800 | static struct packet_config remote_protocol_binary_download; | |
801 | ||
9d1f7ab2 MS |
802 | /* Should we try the 'ThreadInfo' query packet? |
803 | ||
804 | This variable (NOT available to the user: auto-detect only!) | |
805 | determines whether GDB will use the new, simpler "ThreadInfo" | |
806 | query or the older, more complex syntax for thread queries. | |
807 | This is an auto-detect variable (set to true at each connect, | |
808 | and set to false when the target fails to recognize it). */ | |
809 | ||
810 | static int use_threadinfo_query; | |
811 | static int use_threadextra_query; | |
812 | ||
96baa820 JM |
813 | static void |
814 | set_remote_protocol_binary_download_cmd (char *args, | |
815 | int from_tty, | |
816 | struct cmd_list_element *c) | |
817 | { | |
d471ea57 | 818 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
819 | } |
820 | ||
821 | static void | |
822 | show_remote_protocol_binary_download_cmd (char *args, | |
823 | int from_tty) | |
824 | { | |
825 | show_packet_config_cmd (&remote_protocol_binary_download); | |
826 | } | |
827 | ||
c906108c | 828 | |
43ff13b4 JM |
829 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
830 | PTR sigint_remote_twice_token; | |
831 | PTR sigint_remote_token; | |
832 | ||
c906108c SS |
833 | /* These are pointers to hook functions that may be set in order to |
834 | modify resume/wait behavior for a particular architecture. */ | |
835 | ||
507f3c78 KB |
836 | void (*target_resume_hook) (void); |
837 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
838 | \f |
839 | ||
c5aa993b | 840 | |
c906108c SS |
841 | /* These are the threads which we last sent to the remote system. |
842 | -1 for all or -2 for not sent yet. */ | |
843 | static int general_thread; | |
cce74817 | 844 | static int continue_thread; |
c906108c SS |
845 | |
846 | /* Call this function as a result of | |
847 | 1) A halt indication (T packet) containing a thread id | |
848 | 2) A direct query of currthread | |
849 | 3) Successful execution of set thread | |
850 | */ | |
851 | ||
852 | static void | |
fba45db2 | 853 | record_currthread (int currthread) |
c906108c | 854 | { |
c906108c | 855 | general_thread = currthread; |
cce74817 | 856 | |
c906108c SS |
857 | /* If this is a new thread, add it to GDB's thread list. |
858 | If we leave it up to WFI to do this, bad things will happen. */ | |
859 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
860 | { |
861 | add_thread (currthread); | |
8b93c638 JM |
862 | #ifdef UI_OUT |
863 | ui_out_text (uiout, "[New "); | |
864 | ui_out_text (uiout, target_pid_to_str (currthread)); | |
865 | ui_out_text (uiout, "]\n"); | |
866 | #else | |
0f71a2f6 | 867 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); |
8b93c638 | 868 | #endif |
0f71a2f6 | 869 | } |
c906108c SS |
870 | } |
871 | ||
872 | #define MAGIC_NULL_PID 42000 | |
873 | ||
874 | static void | |
fba45db2 | 875 | set_thread (int th, int gen) |
c906108c | 876 | { |
085dd6e6 | 877 | char *buf = alloca (PBUFSIZ); |
cce74817 | 878 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
879 | |
880 | if (state == th) | |
881 | return; | |
882 | ||
883 | buf[0] = 'H'; | |
884 | buf[1] = gen ? 'g' : 'c'; | |
885 | if (th == MAGIC_NULL_PID) | |
886 | { | |
887 | buf[2] = '0'; | |
888 | buf[3] = '\0'; | |
889 | } | |
890 | else if (th < 0) | |
891 | sprintf (&buf[2], "-%x", -th); | |
892 | else | |
893 | sprintf (&buf[2], "%x", th); | |
894 | putpkt (buf); | |
c2d11a7d | 895 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 896 | if (gen) |
c5aa993b | 897 | general_thread = th; |
c906108c | 898 | else |
cce74817 | 899 | continue_thread = th; |
c906108c SS |
900 | } |
901 | \f | |
902 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
903 | ||
904 | static int | |
fba45db2 | 905 | remote_thread_alive (int tid) |
c906108c | 906 | { |
cce74817 | 907 | char buf[16]; |
c906108c | 908 | |
cce74817 JM |
909 | if (tid < 0) |
910 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 911 | else |
cce74817 | 912 | sprintf (buf, "T%08x", tid); |
c906108c | 913 | putpkt (buf); |
c2d11a7d | 914 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
915 | return (buf[0] == 'O' && buf[1] == 'K'); |
916 | } | |
917 | ||
918 | /* About these extended threadlist and threadinfo packets. They are | |
919 | variable length packets but, the fields within them are often fixed | |
920 | length. They are redundent enough to send over UDP as is the | |
921 | remote protocol in general. There is a matching unit test module | |
922 | in libstub. */ | |
923 | ||
cce74817 JM |
924 | #define OPAQUETHREADBYTES 8 |
925 | ||
926 | /* a 64 bit opaque identifier */ | |
927 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
928 | ||
929 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
930 | protocol encoding, and remote.c. it is not particularly changable */ | |
931 | ||
932 | /* Right now, the internal structure is int. We want it to be bigger. | |
933 | Plan to fix this. | |
c5aa993b | 934 | */ |
cce74817 | 935 | |
c5aa993b | 936 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 937 | |
9d1f7ab2 | 938 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
939 | equivalint to the reply of the remote threadinfo packet */ |
940 | ||
941 | struct gdb_ext_thread_info | |
c5aa993b JM |
942 | { |
943 | threadref threadid; /* External form of thread reference */ | |
944 | int active; /* Has state interesting to GDB? , regs, stack */ | |
945 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
946 | char shortname[32]; /* To be used to name threads */ | |
947 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
948 | }; | |
cce74817 JM |
949 | |
950 | /* The volume of remote transfers can be limited by submitting | |
951 | a mask containing bits specifying the desired information. | |
952 | Use a union of these values as the 'selection' parameter to | |
953 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 954 | */ |
cce74817 JM |
955 | |
956 | #define TAG_THREADID 1 | |
957 | #define TAG_EXISTS 2 | |
958 | #define TAG_DISPLAY 4 | |
959 | #define TAG_THREADNAME 8 | |
c5aa993b | 960 | #define TAG_MOREDISPLAY 16 |
cce74817 | 961 | |
c906108c SS |
962 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
963 | ||
a14ed312 | 964 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 965 | |
a14ed312 | 966 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 967 | |
a14ed312 | 968 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 969 | |
a14ed312 | 970 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 971 | |
a14ed312 | 972 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 973 | |
a14ed312 | 974 | static char *pack_int (char *buf, int value); |
cce74817 | 975 | |
a14ed312 | 976 | static char *unpack_int (char *buf, int *value); |
cce74817 | 977 | |
a14ed312 | 978 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 979 | |
a14ed312 | 980 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 981 | |
a14ed312 | 982 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 983 | |
a14ed312 | 984 | void int_to_threadref (threadref * id, int value); |
cce74817 | 985 | |
a14ed312 | 986 | static int threadref_to_int (threadref * ref); |
cce74817 | 987 | |
a14ed312 | 988 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 989 | |
a14ed312 | 990 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 991 | |
a14ed312 | 992 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 993 | |
a14ed312 KB |
994 | static int remote_unpack_thread_info_response (char *pkt, |
995 | threadref * expectedref, | |
996 | struct gdb_ext_thread_info | |
997 | *info); | |
cce74817 JM |
998 | |
999 | ||
a14ed312 KB |
1000 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1001 | struct gdb_ext_thread_info *info); | |
cce74817 | 1002 | |
a14ed312 KB |
1003 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1004 | int selection, | |
1005 | struct gdb_ext_thread_info *info); | |
cce74817 | 1006 | |
a14ed312 KB |
1007 | static char *pack_threadlist_request (char *pkt, int startflag, |
1008 | int threadcount, | |
1009 | threadref * nextthread); | |
cce74817 | 1010 | |
a14ed312 KB |
1011 | static int parse_threadlist_response (char *pkt, |
1012 | int result_limit, | |
1013 | threadref * original_echo, | |
1014 | threadref * resultlist, int *doneflag); | |
cce74817 | 1015 | |
a14ed312 KB |
1016 | static int remote_get_threadlist (int startflag, |
1017 | threadref * nextthread, | |
1018 | int result_limit, | |
1019 | int *done, | |
1020 | int *result_count, threadref * threadlist); | |
cce74817 | 1021 | |
c5aa993b | 1022 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1023 | |
a14ed312 KB |
1024 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1025 | void *context, int looplimit); | |
cce74817 | 1026 | |
a14ed312 | 1027 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1028 | |
c906108c SS |
1029 | /* encode 64 bits in 16 chars of hex */ |
1030 | ||
1031 | static const char hexchars[] = "0123456789abcdef"; | |
1032 | ||
1033 | static int | |
fba45db2 | 1034 | ishex (int ch, int *val) |
c906108c SS |
1035 | { |
1036 | if ((ch >= 'a') && (ch <= 'f')) | |
1037 | { | |
1038 | *val = ch - 'a' + 10; | |
1039 | return 1; | |
1040 | } | |
1041 | if ((ch >= 'A') && (ch <= 'F')) | |
1042 | { | |
1043 | *val = ch - 'A' + 10; | |
1044 | return 1; | |
1045 | } | |
1046 | if ((ch >= '0') && (ch <= '9')) | |
1047 | { | |
1048 | *val = ch - '0'; | |
1049 | return 1; | |
1050 | } | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | static int | |
fba45db2 | 1055 | stubhex (int ch) |
c906108c SS |
1056 | { |
1057 | if (ch >= 'a' && ch <= 'f') | |
1058 | return ch - 'a' + 10; | |
1059 | if (ch >= '0' && ch <= '9') | |
1060 | return ch - '0'; | |
1061 | if (ch >= 'A' && ch <= 'F') | |
1062 | return ch - 'A' + 10; | |
1063 | return -1; | |
1064 | } | |
1065 | ||
1066 | static int | |
fba45db2 | 1067 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1068 | { |
1069 | int nibble; | |
1070 | int retval = 0; | |
1071 | ||
1072 | while (fieldlength) | |
1073 | { | |
1074 | nibble = stubhex (*buff++); | |
1075 | retval |= nibble; | |
1076 | fieldlength--; | |
1077 | if (fieldlength) | |
1078 | retval = retval << 4; | |
1079 | } | |
1080 | return retval; | |
1081 | } | |
1082 | ||
1083 | char * | |
fba45db2 KB |
1084 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1085 | int *result) | |
c906108c SS |
1086 | { |
1087 | int nibble; | |
1088 | int retval = 0; | |
1089 | ||
1090 | while (ishex (*buff, &nibble)) | |
1091 | { | |
1092 | buff++; | |
1093 | retval = retval << 4; | |
1094 | retval |= nibble & 0x0f; | |
1095 | } | |
1096 | *result = retval; | |
1097 | return buff; | |
1098 | } | |
1099 | ||
1100 | static char * | |
fba45db2 | 1101 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1102 | { |
1103 | ishex (*buf++, val); | |
1104 | return buf; | |
1105 | } | |
1106 | ||
1107 | static char * | |
fba45db2 | 1108 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1109 | { |
1110 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1111 | return buf; | |
1112 | } | |
1113 | ||
1114 | static char * | |
fba45db2 | 1115 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1116 | { |
1117 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1118 | *pkt++ = hexchars[(byte & 0xf)]; | |
1119 | return pkt; | |
1120 | } | |
1121 | ||
1122 | static char * | |
fba45db2 | 1123 | unpack_byte (char *buf, int *value) |
c906108c SS |
1124 | { |
1125 | *value = stub_unpack_int (buf, 2); | |
1126 | return buf + 2; | |
1127 | } | |
1128 | ||
1129 | static char * | |
fba45db2 | 1130 | pack_int (char *buf, int value) |
c906108c SS |
1131 | { |
1132 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1133 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1134 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1135 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1136 | return buf; | |
1137 | } | |
1138 | ||
1139 | static char * | |
fba45db2 | 1140 | unpack_int (char *buf, int *value) |
c906108c SS |
1141 | { |
1142 | *value = stub_unpack_int (buf, 8); | |
1143 | return buf + 8; | |
1144 | } | |
1145 | ||
c5aa993b | 1146 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1147 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1148 | |
1149 | static char * | |
fba45db2 | 1150 | pack_string (char *pkt, char *string) |
c906108c SS |
1151 | { |
1152 | char ch; | |
1153 | int len; | |
1154 | ||
1155 | len = strlen (string); | |
1156 | if (len > 200) | |
1157 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1158 | pkt = pack_hex_byte (pkt, len); | |
1159 | while (len-- > 0) | |
1160 | { | |
1161 | ch = *string++; | |
1162 | if ((ch == '\0') || (ch == '#')) | |
1163 | ch = '*'; /* Protect encapsulation */ | |
1164 | *pkt++ = ch; | |
1165 | } | |
1166 | return pkt; | |
1167 | } | |
1168 | #endif /* 0 (unused) */ | |
1169 | ||
1170 | static char * | |
fba45db2 | 1171 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1172 | { |
1173 | while (length--) | |
1174 | *dest++ = *src++; | |
1175 | *dest = '\0'; | |
1176 | return src; | |
1177 | } | |
1178 | ||
1179 | static char * | |
fba45db2 | 1180 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1181 | { |
1182 | char *limit; | |
1183 | unsigned char *altid; | |
1184 | ||
1185 | altid = (unsigned char *) id; | |
1186 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1187 | while (pkt < limit) | |
1188 | pkt = pack_hex_byte (pkt, *altid++); | |
1189 | return pkt; | |
1190 | } | |
1191 | ||
1192 | ||
1193 | static char * | |
fba45db2 | 1194 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1195 | { |
1196 | char *altref; | |
1197 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1198 | int x, y; | |
1199 | ||
1200 | altref = (char *) id; | |
1201 | ||
1202 | while (inbuf < limit) | |
1203 | { | |
1204 | x = stubhex (*inbuf++); | |
1205 | y = stubhex (*inbuf++); | |
1206 | *altref++ = (x << 4) | y; | |
1207 | } | |
1208 | return inbuf; | |
1209 | } | |
1210 | ||
1211 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1212 | ints. This is due to a mismatch of specifications. We would like | |
1213 | to use 64bit thread references internally. This is an adapter | |
1214 | function. */ | |
1215 | ||
1216 | void | |
fba45db2 | 1217 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1218 | { |
1219 | unsigned char *scan; | |
1220 | ||
1221 | scan = (unsigned char *) id; | |
1222 | { | |
1223 | int i = 4; | |
1224 | while (i--) | |
1225 | *scan++ = 0; | |
1226 | } | |
1227 | *scan++ = (value >> 24) & 0xff; | |
1228 | *scan++ = (value >> 16) & 0xff; | |
1229 | *scan++ = (value >> 8) & 0xff; | |
1230 | *scan++ = (value & 0xff); | |
1231 | } | |
1232 | ||
1233 | static int | |
fba45db2 | 1234 | threadref_to_int (threadref *ref) |
c906108c SS |
1235 | { |
1236 | int i, value = 0; | |
1237 | unsigned char *scan; | |
1238 | ||
1239 | scan = (char *) ref; | |
1240 | scan += 4; | |
1241 | i = 4; | |
1242 | while (i-- > 0) | |
1243 | value = (value << 8) | ((*scan++) & 0xff); | |
1244 | return value; | |
1245 | } | |
1246 | ||
1247 | static void | |
fba45db2 | 1248 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1249 | { |
1250 | int i; | |
1251 | unsigned char *csrc, *cdest; | |
1252 | ||
1253 | csrc = (unsigned char *) src; | |
1254 | cdest = (unsigned char *) dest; | |
1255 | i = 8; | |
1256 | while (i--) | |
1257 | *cdest++ = *csrc++; | |
1258 | } | |
1259 | ||
1260 | static int | |
fba45db2 | 1261 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1262 | { |
1263 | /* things are broken right now, so just assume we got a match */ | |
1264 | #if 0 | |
1265 | unsigned char *srcp, *destp; | |
1266 | int i, result; | |
1267 | srcp = (char *) src; | |
1268 | destp = (char *) dest; | |
1269 | ||
1270 | result = 1; | |
1271 | while (i-- > 0) | |
1272 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1273 | return result; | |
1274 | #endif | |
1275 | return 1; | |
1276 | } | |
1277 | ||
1278 | /* | |
c5aa993b JM |
1279 | threadid:1, # always request threadid |
1280 | context_exists:2, | |
1281 | display:4, | |
1282 | unique_name:8, | |
1283 | more_display:16 | |
1284 | */ | |
c906108c SS |
1285 | |
1286 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1287 | ||
1288 | static char * | |
fba45db2 | 1289 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1290 | { |
1291 | *pkt++ = 'q'; /* Info Query */ | |
1292 | *pkt++ = 'P'; /* process or thread info */ | |
1293 | pkt = pack_int (pkt, mode); /* mode */ | |
1294 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1295 | *pkt = '\0'; /* terminate */ | |
1296 | return pkt; | |
1297 | } | |
1298 | ||
1299 | /* These values tag the fields in a thread info response packet */ | |
1300 | /* Tagging the fields allows us to request specific fields and to | |
1301 | add more fields as time goes by */ | |
1302 | ||
c5aa993b JM |
1303 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1304 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1305 | fetch registers and its stack */ | |
1306 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1307 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1308 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1309 | the process */ | |
c906108c SS |
1310 | |
1311 | static int | |
fba45db2 KB |
1312 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1313 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1314 | { |
1315 | int mask, length; | |
1316 | unsigned int tag; | |
1317 | threadref ref; | |
c5aa993b | 1318 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1319 | int retval = 1; |
1320 | ||
1321 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1322 | info->active = 0; | |
1323 | info->display[0] = '\0'; | |
1324 | info->shortname[0] = '\0'; | |
1325 | info->more_display[0] = '\0'; | |
1326 | ||
1327 | /* Assume the characters indicating the packet type have been stripped */ | |
1328 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1329 | pkt = unpack_threadid (pkt, &ref); | |
1330 | ||
1331 | if (mask == 0) | |
1332 | warning ("Incomplete response to threadinfo request\n"); | |
1333 | if (!threadmatch (&ref, expectedref)) | |
1334 | { /* This is an answer to a different request */ | |
1335 | warning ("ERROR RMT Thread info mismatch\n"); | |
1336 | return 0; | |
1337 | } | |
1338 | copy_threadref (&info->threadid, &ref); | |
1339 | ||
1340 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1341 | ||
c5aa993b | 1342 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1343 | { |
1344 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1345 | pkt = unpack_byte (pkt, &length); /* length */ | |
1346 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1347 | { | |
1348 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1349 | retval = 0; | |
1350 | break; | |
1351 | } | |
1352 | if (tag == TAG_THREADID) | |
1353 | { | |
1354 | if (length != 16) | |
1355 | { | |
1356 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1357 | retval = 0; | |
1358 | break; | |
1359 | } | |
1360 | pkt = unpack_threadid (pkt, &ref); | |
1361 | mask = mask & ~TAG_THREADID; | |
1362 | continue; | |
1363 | } | |
1364 | if (tag == TAG_EXISTS) | |
1365 | { | |
1366 | info->active = stub_unpack_int (pkt, length); | |
1367 | pkt += length; | |
1368 | mask = mask & ~(TAG_EXISTS); | |
1369 | if (length > 8) | |
1370 | { | |
1371 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1372 | retval = 0; | |
1373 | break; | |
1374 | } | |
1375 | continue; | |
1376 | } | |
1377 | if (tag == TAG_THREADNAME) | |
1378 | { | |
1379 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1380 | mask = mask & ~TAG_THREADNAME; | |
1381 | continue; | |
1382 | } | |
1383 | if (tag == TAG_DISPLAY) | |
1384 | { | |
1385 | pkt = unpack_string (pkt, &info->display[0], length); | |
1386 | mask = mask & ~TAG_DISPLAY; | |
1387 | continue; | |
1388 | } | |
1389 | if (tag == TAG_MOREDISPLAY) | |
1390 | { | |
1391 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1392 | mask = mask & ~TAG_MOREDISPLAY; | |
1393 | continue; | |
1394 | } | |
1395 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1396 | break; /* Not a tag we know about */ | |
1397 | } | |
1398 | return retval; | |
1399 | } | |
1400 | ||
1401 | static int | |
fba45db2 KB |
1402 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1403 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1404 | { |
1405 | int result; | |
085dd6e6 | 1406 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1407 | |
1408 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1409 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1410 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1411 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1412 | info); | |
1413 | return result; | |
1414 | } | |
1415 | ||
1416 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1417 | representation of a threadid. */ | |
1418 | ||
1419 | static int | |
fba45db2 KB |
1420 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1421 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1422 | { |
1423 | threadref lclref; | |
1424 | ||
1425 | int_to_threadref (&lclref, *ref); | |
1426 | return remote_get_threadinfo (&lclref, selection, info); | |
1427 | } | |
1428 | ||
1429 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1430 | ||
1431 | static char * | |
fba45db2 KB |
1432 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1433 | threadref *nextthread) | |
c906108c SS |
1434 | { |
1435 | *pkt++ = 'q'; /* info query packet */ | |
1436 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1437 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1438 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1439 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1440 | *pkt = '\0'; | |
1441 | return pkt; | |
1442 | } | |
1443 | ||
1444 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1445 | ||
1446 | static int | |
fba45db2 KB |
1447 | parse_threadlist_response (char *pkt, int result_limit, |
1448 | threadref *original_echo, threadref *resultlist, | |
1449 | int *doneflag) | |
c906108c SS |
1450 | { |
1451 | char *limit; | |
1452 | int count, resultcount, done; | |
1453 | ||
1454 | resultcount = 0; | |
1455 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1456 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1457 | pkt = unpack_byte (pkt, &count); /* count field */ |
1458 | pkt = unpack_nibble (pkt, &done); | |
1459 | /* The first threadid is the argument threadid. */ | |
1460 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1461 | while ((count-- > 0) && (pkt < limit)) | |
1462 | { | |
1463 | pkt = unpack_threadid (pkt, resultlist++); | |
1464 | if (resultcount++ >= result_limit) | |
1465 | break; | |
1466 | } | |
1467 | if (doneflag) | |
1468 | *doneflag = done; | |
1469 | return resultcount; | |
1470 | } | |
1471 | ||
1472 | static int | |
fba45db2 KB |
1473 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1474 | int *done, int *result_count, threadref *threadlist) | |
c906108c SS |
1475 | { |
1476 | static threadref echo_nextthread; | |
085dd6e6 JM |
1477 | char *threadlist_packet = alloca (PBUFSIZ); |
1478 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1479 | int result = 1; |
1480 | ||
1481 | /* Trancate result limit to be smaller than the packet size */ | |
1482 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1483 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1484 | ||
1485 | pack_threadlist_request (threadlist_packet, | |
1486 | startflag, result_limit, nextthread); | |
1487 | putpkt (threadlist_packet); | |
c2d11a7d | 1488 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1489 | |
1490 | *result_count = | |
1491 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1492 | threadlist, done); | |
1493 | ||
1494 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1495 | { | |
1496 | /* FIXME: This is a good reason to drop the packet */ | |
1497 | /* Possably, there is a duplicate response */ | |
1498 | /* Possabilities : | |
1499 | retransmit immediatly - race conditions | |
1500 | retransmit after timeout - yes | |
1501 | exit | |
1502 | wait for packet, then exit | |
1503 | */ | |
1504 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1505 | return 0; /* I choose simply exiting */ | |
1506 | } | |
1507 | if (*result_count <= 0) | |
1508 | { | |
1509 | if (*done != 1) | |
1510 | { | |
1511 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1512 | result = 0; | |
1513 | } | |
1514 | return result; /* break; */ | |
1515 | } | |
1516 | if (*result_count > result_limit) | |
1517 | { | |
1518 | *result_count = 0; | |
1519 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1520 | return 0; | |
1521 | } | |
1522 | return result; | |
1523 | } | |
1524 | ||
1525 | /* This is the interface between remote and threads, remotes upper interface */ | |
1526 | ||
1527 | /* remote_find_new_threads retrieves the thread list and for each | |
1528 | thread in the list, looks up the thread in GDB's internal list, | |
1529 | ading the thread if it does not already exist. This involves | |
1530 | getting partial thread lists from the remote target so, polling the | |
1531 | quit_flag is required. */ | |
1532 | ||
1533 | ||
1534 | /* About this many threadisds fit in a packet. */ | |
1535 | ||
1536 | #define MAXTHREADLISTRESULTS 32 | |
1537 | ||
1538 | static int | |
fba45db2 KB |
1539 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1540 | int looplimit) | |
c906108c SS |
1541 | { |
1542 | int done, i, result_count; | |
1543 | int startflag = 1; | |
1544 | int result = 1; | |
1545 | int loopcount = 0; | |
1546 | static threadref nextthread; | |
1547 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1548 | ||
1549 | done = 0; | |
1550 | while (!done) | |
1551 | { | |
1552 | if (loopcount++ > looplimit) | |
1553 | { | |
1554 | result = 0; | |
1555 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1556 | break; | |
1557 | } | |
1558 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1559 | &done, &result_count, resultthreadlist)) | |
1560 | { | |
1561 | result = 0; | |
1562 | break; | |
1563 | } | |
1564 | /* clear for later iterations */ | |
1565 | startflag = 0; | |
1566 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1567 | if (result_count >= 1) | |
1568 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1569 | i = 0; | |
1570 | while (result_count--) | |
1571 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1572 | break; | |
1573 | } | |
1574 | return result; | |
1575 | } | |
1576 | ||
1577 | static int | |
fba45db2 | 1578 | remote_newthread_step (threadref *ref, void *context) |
c906108c SS |
1579 | { |
1580 | int pid; | |
1581 | ||
1582 | pid = threadref_to_int (ref); | |
1583 | if (!in_thread_list (pid)) | |
1584 | add_thread (pid); | |
1585 | return 1; /* continue iterator */ | |
1586 | } | |
1587 | ||
1588 | #define CRAZY_MAX_THREADS 1000 | |
1589 | ||
1590 | static int | |
fba45db2 | 1591 | remote_current_thread (int oldpid) |
c906108c | 1592 | { |
085dd6e6 | 1593 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1594 | |
1595 | putpkt ("qC"); | |
c2d11a7d | 1596 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1597 | if (buf[0] == 'Q' && buf[1] == 'C') |
1598 | return strtol (&buf[2], NULL, 16); | |
1599 | else | |
1600 | return oldpid; | |
1601 | } | |
1602 | ||
9d1f7ab2 MS |
1603 | /* Find new threads for info threads command. |
1604 | * Original version, using John Metzler's thread protocol. | |
1605 | */ | |
cce74817 JM |
1606 | |
1607 | static void | |
fba45db2 | 1608 | remote_find_new_threads (void) |
c906108c | 1609 | { |
c5aa993b JM |
1610 | remote_threadlist_iterator (remote_newthread_step, 0, |
1611 | CRAZY_MAX_THREADS); | |
c906108c SS |
1612 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1613 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1614 | } |
1615 | ||
9d1f7ab2 MS |
1616 | /* |
1617 | * Find all threads for info threads command. | |
1618 | * Uses new thread protocol contributed by Cisco. | |
1619 | * Falls back and attempts to use the older method (above) | |
1620 | * if the target doesn't respond to the new method. | |
1621 | */ | |
1622 | ||
0f71a2f6 JM |
1623 | static void |
1624 | remote_threads_info (void) | |
1625 | { | |
085dd6e6 JM |
1626 | char *buf = alloca (PBUFSIZ); |
1627 | char *bufp; | |
0f71a2f6 JM |
1628 | int tid; |
1629 | ||
1630 | if (remote_desc == 0) /* paranoia */ | |
1631 | error ("Command can only be used when connected to the remote target."); | |
1632 | ||
9d1f7ab2 MS |
1633 | if (use_threadinfo_query) |
1634 | { | |
1635 | putpkt ("qfThreadInfo"); | |
1636 | bufp = buf; | |
1637 | getpkt (bufp, PBUFSIZ, 0); | |
1638 | if (bufp[0] != '\0') /* q packet recognized */ | |
1639 | { | |
1640 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1641 | { | |
1642 | do | |
1643 | { | |
1644 | tid = strtol (bufp, &bufp, 16); | |
1645 | if (tid != 0 && !in_thread_list (tid)) | |
1646 | add_thread (tid); | |
1647 | } | |
1648 | while (*bufp++ == ','); /* comma-separated list */ | |
1649 | putpkt ("qsThreadInfo"); | |
1650 | bufp = buf; | |
1651 | getpkt (bufp, PBUFSIZ, 0); | |
1652 | } | |
1653 | return; /* done */ | |
1654 | } | |
1655 | } | |
1656 | ||
1657 | /* Else fall back to old method based on jmetzler protocol. */ | |
1658 | use_threadinfo_query = 0; | |
1659 | remote_find_new_threads (); | |
1660 | return; | |
1661 | } | |
1662 | ||
1663 | /* | |
1664 | * Collect a descriptive string about the given thread. | |
1665 | * The target may say anything it wants to about the thread | |
1666 | * (typically info about its blocked / runnable state, name, etc.). | |
1667 | * This string will appear in the info threads display. | |
1668 | * | |
1669 | * Optional: targets are not required to implement this function. | |
1670 | */ | |
1671 | ||
1672 | static char * | |
1673 | remote_threads_extra_info (struct thread_info *tp) | |
1674 | { | |
1675 | int result; | |
1676 | int set; | |
1677 | threadref id; | |
1678 | struct gdb_ext_thread_info threadinfo; | |
1679 | static char display_buf[100]; /* arbitrary... */ | |
1680 | char *bufp = alloca (PBUFSIZ); | |
1681 | int n = 0; /* position in display_buf */ | |
1682 | ||
1683 | if (remote_desc == 0) /* paranoia */ | |
1684 | internal_error ("remote_threads_extra_info"); | |
1685 | ||
1686 | if (use_threadextra_query) | |
1687 | { | |
480ff1fb | 1688 | sprintf (bufp, "qThreadExtraInfo,%x", tp->pid); |
9d1f7ab2 MS |
1689 | putpkt (bufp); |
1690 | getpkt (bufp, PBUFSIZ, 0); | |
1691 | if (bufp[0] != 0) | |
1692 | { | |
1693 | char *p; | |
1694 | ||
1695 | for (p = display_buf; | |
1696 | p < display_buf + sizeof(display_buf) - 1 && | |
1697 | bufp[0] != 0 && | |
1698 | bufp[1] != 0; | |
1699 | p++, bufp+=2) | |
1700 | { | |
1701 | *p = fromhex (bufp[0]) * 16 + fromhex (bufp[1]); | |
1702 | } | |
1703 | *p = 0; | |
1704 | return display_buf; | |
1705 | } | |
0f71a2f6 | 1706 | } |
9d1f7ab2 MS |
1707 | |
1708 | /* If the above query fails, fall back to the old method. */ | |
1709 | use_threadextra_query = 0; | |
1710 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1711 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
1712 | int_to_threadref (&id, tp->pid); | |
1713 | if (remote_get_threadinfo (&id, set, &threadinfo)) | |
1714 | if (threadinfo.active) | |
0f71a2f6 | 1715 | { |
9d1f7ab2 MS |
1716 | if (*threadinfo.shortname) |
1717 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1718 | if (*threadinfo.display) | |
1719 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1720 | if (*threadinfo.more_display) | |
1721 | n += sprintf(&display_buf[n], " Priority: %s", | |
1722 | threadinfo.more_display); | |
1723 | ||
1724 | if (n > 0) | |
c5aa993b | 1725 | { |
9d1f7ab2 MS |
1726 | /* for purely cosmetic reasons, clear up trailing commas */ |
1727 | if (',' == display_buf[n-1]) | |
1728 | display_buf[n-1] = ' '; | |
1729 | return display_buf; | |
c5aa993b | 1730 | } |
0f71a2f6 | 1731 | } |
9d1f7ab2 | 1732 | return NULL; |
0f71a2f6 | 1733 | } |
9d1f7ab2 | 1734 | |
c906108c | 1735 | \f |
c5aa993b | 1736 | |
c906108c SS |
1737 | /* Restart the remote side; this is an extended protocol operation. */ |
1738 | ||
1739 | static void | |
fba45db2 | 1740 | extended_remote_restart (void) |
c906108c | 1741 | { |
085dd6e6 | 1742 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1743 | |
1744 | /* Send the restart command; for reasons I don't understand the | |
1745 | remote side really expects a number after the "R". */ | |
1746 | buf[0] = 'R'; | |
1747 | sprintf (&buf[1], "%x", 0); | |
1748 | putpkt (buf); | |
1749 | ||
1750 | /* Now query for status so this looks just like we restarted | |
1751 | gdbserver from scratch. */ | |
1752 | putpkt ("?"); | |
c2d11a7d | 1753 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1754 | } |
1755 | \f | |
1756 | /* Clean up connection to a remote debugger. */ | |
1757 | ||
1758 | /* ARGSUSED */ | |
1759 | static void | |
fba45db2 | 1760 | remote_close (int quitting) |
c906108c SS |
1761 | { |
1762 | if (remote_desc) | |
1763 | SERIAL_CLOSE (remote_desc); | |
1764 | remote_desc = NULL; | |
1765 | } | |
1766 | ||
1767 | /* Query the remote side for the text, data and bss offsets. */ | |
1768 | ||
1769 | static void | |
fba45db2 | 1770 | get_offsets (void) |
c906108c | 1771 | { |
085dd6e6 JM |
1772 | char *buf = alloca (PBUFSIZ); |
1773 | char *ptr; | |
c906108c SS |
1774 | int lose; |
1775 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1776 | struct section_offsets *offs; | |
1777 | ||
1778 | putpkt ("qOffsets"); | |
1779 | ||
c2d11a7d | 1780 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1781 | |
1782 | if (buf[0] == '\000') | |
1783 | return; /* Return silently. Stub doesn't support | |
1784 | this command. */ | |
1785 | if (buf[0] == 'E') | |
1786 | { | |
1787 | warning ("Remote failure reply: %s", buf); | |
1788 | return; | |
1789 | } | |
1790 | ||
1791 | /* Pick up each field in turn. This used to be done with scanf, but | |
1792 | scanf will make trouble if CORE_ADDR size doesn't match | |
1793 | conversion directives correctly. The following code will work | |
1794 | with any size of CORE_ADDR. */ | |
1795 | text_addr = data_addr = bss_addr = 0; | |
1796 | ptr = buf; | |
1797 | lose = 0; | |
1798 | ||
1799 | if (strncmp (ptr, "Text=", 5) == 0) | |
1800 | { | |
1801 | ptr += 5; | |
1802 | /* Don't use strtol, could lose on big values. */ | |
1803 | while (*ptr && *ptr != ';') | |
1804 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1805 | } | |
1806 | else | |
1807 | lose = 1; | |
1808 | ||
1809 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1810 | { | |
1811 | ptr += 6; | |
1812 | while (*ptr && *ptr != ';') | |
1813 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1814 | } | |
1815 | else | |
1816 | lose = 1; | |
1817 | ||
1818 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1819 | { | |
1820 | ptr += 5; | |
1821 | while (*ptr && *ptr != ';') | |
1822 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1823 | } | |
1824 | else | |
1825 | lose = 1; | |
1826 | ||
1827 | if (lose) | |
1828 | error ("Malformed response to offset query, %s", buf); | |
1829 | ||
1830 | if (symfile_objfile == NULL) | |
1831 | return; | |
1832 | ||
d4f3574e SS |
1833 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1834 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1835 | |
a4c8257b | 1836 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1837 | |
1838 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1839 | because that's what nlmconv does now. The real solution requires changes | |
1840 | to the stub and remote.c that I don't have time to do right now. */ | |
1841 | ||
a4c8257b EZ |
1842 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1843 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1844 | |
1845 | objfile_relocate (symfile_objfile, offs); | |
1846 | } | |
1847 | ||
0f71a2f6 JM |
1848 | /* |
1849 | * Cisco version of section offsets: | |
1850 | * | |
1851 | * Instead of having GDB query the target for the section offsets, | |
1852 | * Cisco lets the target volunteer the information! It's also in | |
1853 | * a different format, so here are the functions that will decode | |
1854 | * a section offset packet from a Cisco target. | |
1855 | */ | |
1856 | ||
1857 | /* | |
1858 | * Function: remote_cisco_section_offsets | |
1859 | * | |
1860 | * Returns: zero for success, non-zero for failure | |
1861 | */ | |
1862 | ||
c5aa993b | 1863 | static int |
c2d11a7d JM |
1864 | remote_cisco_section_offsets (bfd_vma text_addr, |
1865 | bfd_vma data_addr, | |
1866 | bfd_vma bss_addr, | |
1867 | bfd_signed_vma *text_offs, | |
1868 | bfd_signed_vma *data_offs, | |
1869 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1870 | { |
1871 | bfd_vma text_base, data_base, bss_base; | |
1872 | struct minimal_symbol *start; | |
1873 | asection *sect; | |
c5aa993b | 1874 | bfd *abfd; |
0f71a2f6 JM |
1875 | int len; |
1876 | char *p; | |
1877 | ||
1878 | if (symfile_objfile == NULL) | |
c5aa993b | 1879 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1880 | |
1881 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1882 | if (start == NULL) | |
c5aa993b | 1883 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1884 | |
1885 | data_base = bss_base = 0; | |
1886 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1887 | ||
1888 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1889 | for (sect = abfd->sections; |
0f71a2f6 JM |
1890 | sect != 0; |
1891 | sect = sect->next) | |
1892 | { | |
c5aa993b | 1893 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1894 | len = strlen (p); |
1895 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1896 | if (data_base == 0 || | |
1897 | data_base > bfd_get_section_vma (abfd, sect)) | |
1898 | data_base = bfd_get_section_vma (abfd, sect); | |
1899 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1900 | if (bss_base == 0 || |
0f71a2f6 JM |
1901 | bss_base > bfd_get_section_vma (abfd, sect)) |
1902 | bss_base = bfd_get_section_vma (abfd, sect); | |
1903 | } | |
1904 | *text_offs = text_addr - text_base; | |
1905 | *data_offs = data_addr - data_base; | |
c5aa993b | 1906 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1907 | if (remote_debug) |
1908 | { | |
1909 | char tmp[128]; | |
1910 | ||
1911 | sprintf (tmp, "VMA: text = 0x"); | |
1912 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1913 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1914 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1915 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1916 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1917 | fprintf_filtered (gdb_stdlog, tmp); | |
1918 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1919 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1920 | paddr_nz (*text_offs), | |
1921 | paddr_nz (*data_offs), | |
1922 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1923 | } |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | /* | |
1929 | * Function: remote_cisco_objfile_relocate | |
1930 | * | |
1931 | * Relocate the symbol file for a remote target. | |
1932 | */ | |
1933 | ||
96baa820 | 1934 | void |
fba45db2 KB |
1935 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
1936 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
1937 | { |
1938 | struct section_offsets *offs; | |
1939 | ||
c5aa993b | 1940 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1941 | { |
1942 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1943 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1944 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1945 | |
d4f3574e SS |
1946 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1947 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 1948 | |
a4c8257b EZ |
1949 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
1950 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
1951 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
1952 | |
1953 | /* First call the standard objfile_relocate. */ | |
1954 | objfile_relocate (symfile_objfile, offs); | |
1955 | ||
1956 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1957 | the exec target. These entries will control memory transfers |
1958 | from the exec file. */ | |
0f71a2f6 JM |
1959 | |
1960 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1961 | } | |
1962 | } | |
1963 | ||
c906108c SS |
1964 | /* Stub for catch_errors. */ |
1965 | ||
0f71a2f6 | 1966 | static int |
c2d11a7d | 1967 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
1968 | { |
1969 | start_remote (); /* Initialize gdb process mechanisms */ | |
1970 | return 1; | |
1971 | } | |
1972 | ||
c906108c | 1973 | static int |
fba45db2 | 1974 | remote_start_remote (PTR dummy) |
c906108c | 1975 | { |
8edbea78 | 1976 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
1977 | |
1978 | /* Ack any packet which the remote side has already sent. */ | |
1979 | SERIAL_WRITE (remote_desc, "+", 1); | |
1980 | ||
1981 | /* Let the stub know that we want it to return the thread. */ | |
1982 | set_thread (-1, 0); | |
1983 | ||
1984 | inferior_pid = remote_current_thread (inferior_pid); | |
1985 | ||
1986 | get_offsets (); /* Get text, data & bss offsets */ | |
1987 | ||
1988 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 1989 | immediate_quit--; |
c906108c | 1990 | |
0f71a2f6 | 1991 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1992 | } |
1993 | ||
1994 | /* Open a connection to a remote debugger. | |
1995 | NAME is the filename used for communication. */ | |
1996 | ||
1997 | static void | |
fba45db2 | 1998 | remote_open (char *name, int from_tty) |
c906108c SS |
1999 | { |
2000 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2001 | } | |
2002 | ||
43ff13b4 JM |
2003 | /* Just like remote_open, but with asynchronous support. */ |
2004 | static void | |
fba45db2 | 2005 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2006 | { |
2007 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2008 | } | |
2009 | ||
c906108c SS |
2010 | /* Open a connection to a remote debugger using the extended |
2011 | remote gdb protocol. NAME is the filename used for communication. */ | |
2012 | ||
2013 | static void | |
fba45db2 | 2014 | extended_remote_open (char *name, int from_tty) |
c906108c | 2015 | { |
c5aa993b | 2016 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2017 | } |
2018 | ||
43ff13b4 JM |
2019 | /* Just like extended_remote_open, but with asynchronous support. */ |
2020 | static void | |
fba45db2 | 2021 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2022 | { |
c5aa993b | 2023 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2024 | } |
2025 | ||
c906108c SS |
2026 | /* Generic code for opening a connection to a remote target. */ |
2027 | ||
d471ea57 AC |
2028 | static void |
2029 | init_all_packet_configs (void) | |
2030 | { | |
2031 | int i; | |
2032 | update_packet_config (&remote_protocol_P); | |
2033 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
2034 | update_packet_config (&remote_protocol_Z[i]); | |
2035 | /* Force remote_write_bytes to check whether target supports binary | |
2036 | downloading. */ | |
2037 | update_packet_config (&remote_protocol_binary_download); | |
2038 | } | |
2039 | ||
c906108c | 2040 | static void |
fba45db2 KB |
2041 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2042 | int extended_p) | |
c906108c SS |
2043 | { |
2044 | if (name == 0) | |
2045 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2046 | serial device is attached to the remote system\n\ |
2047 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2048 | |
6426a772 JM |
2049 | /* See FIXME above */ |
2050 | wait_forever_enabled_p = 1; | |
2051 | ||
c906108c SS |
2052 | target_preopen (from_tty); |
2053 | ||
2054 | unpush_target (target); | |
2055 | ||
c906108c SS |
2056 | remote_desc = SERIAL_OPEN (name); |
2057 | if (!remote_desc) | |
2058 | perror_with_name (name); | |
2059 | ||
2060 | if (baud_rate != -1) | |
2061 | { | |
2062 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2063 | { | |
2064 | SERIAL_CLOSE (remote_desc); | |
2065 | perror_with_name (name); | |
2066 | } | |
2067 | } | |
2068 | ||
c906108c SS |
2069 | SERIAL_RAW (remote_desc); |
2070 | ||
2071 | /* If there is something sitting in the buffer we might take it as a | |
2072 | response to a command, which would be bad. */ | |
2073 | SERIAL_FLUSH_INPUT (remote_desc); | |
2074 | ||
2075 | if (from_tty) | |
2076 | { | |
2077 | puts_filtered ("Remote debugging using "); | |
2078 | puts_filtered (name); | |
2079 | puts_filtered ("\n"); | |
2080 | } | |
c5aa993b | 2081 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2082 | |
d471ea57 | 2083 | init_all_packet_configs (); |
96baa820 | 2084 | |
c5aa993b | 2085 | general_thread = -2; |
cce74817 | 2086 | continue_thread = -2; |
c906108c | 2087 | |
9d1f7ab2 MS |
2088 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2089 | use_threadinfo_query = 1; | |
2090 | use_threadextra_query = 1; | |
2091 | ||
c906108c SS |
2092 | /* Without this, some commands which require an active target (such |
2093 | as kill) won't work. This variable serves (at least) double duty | |
2094 | as both the pid of the target process (if it has such), and as a | |
2095 | flag indicating that a target is active. These functions should | |
2096 | be split out into seperate variables, especially since GDB will | |
2097 | someday have a notion of debugging several processes. */ | |
2098 | ||
2099 | inferior_pid = MAGIC_NULL_PID; | |
2100 | /* Start the remote connection; if error (0), discard this target. | |
2101 | In particular, if the user quits, be sure to discard it | |
2102 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2103 | if (!catch_errors (remote_start_remote, NULL, |
2104 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2105 | RETURN_MASK_ALL)) |
2106 | { | |
2107 | pop_target (); | |
2108 | return; | |
2109 | } | |
2110 | ||
2111 | if (extended_p) | |
2112 | { | |
2113 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 2114 | char *buf = alloca (PBUFSIZ); |
c906108c | 2115 | putpkt ("!"); |
c2d11a7d | 2116 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
2117 | } |
2118 | } | |
2119 | ||
43ff13b4 JM |
2120 | /* Just like remote_open but with asynchronous support. */ |
2121 | static void | |
fba45db2 KB |
2122 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2123 | int extended_p) | |
43ff13b4 JM |
2124 | { |
2125 | if (name == 0) | |
2126 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2127 | serial device is attached to the remote system\n\ |
2128 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2129 | |
2130 | target_preopen (from_tty); | |
2131 | ||
2132 | unpush_target (target); | |
2133 | ||
43ff13b4 JM |
2134 | remote_desc = SERIAL_OPEN (name); |
2135 | if (!remote_desc) | |
2136 | perror_with_name (name); | |
2137 | ||
2138 | if (baud_rate != -1) | |
2139 | { | |
2140 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2141 | { | |
2142 | SERIAL_CLOSE (remote_desc); | |
2143 | perror_with_name (name); | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | SERIAL_RAW (remote_desc); | |
2148 | ||
2149 | /* If there is something sitting in the buffer we might take it as a | |
2150 | response to a command, which would be bad. */ | |
2151 | SERIAL_FLUSH_INPUT (remote_desc); | |
2152 | ||
2153 | if (from_tty) | |
2154 | { | |
2155 | puts_filtered ("Remote debugging using "); | |
2156 | puts_filtered (name); | |
2157 | puts_filtered ("\n"); | |
2158 | } | |
2159 | ||
c5aa993b | 2160 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2161 | |
d471ea57 | 2162 | init_all_packet_configs (); |
43ff13b4 | 2163 | |
c5aa993b | 2164 | general_thread = -2; |
43ff13b4 JM |
2165 | continue_thread = -2; |
2166 | ||
9d1f7ab2 MS |
2167 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2168 | use_threadinfo_query = 1; | |
2169 | use_threadextra_query = 1; | |
2170 | ||
43ff13b4 JM |
2171 | /* Without this, some commands which require an active target (such |
2172 | as kill) won't work. This variable serves (at least) double duty | |
2173 | as both the pid of the target process (if it has such), and as a | |
2174 | flag indicating that a target is active. These functions should | |
2175 | be split out into seperate variables, especially since GDB will | |
2176 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2177 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2178 | |
2179 | /* With this target we start out by owning the terminal. */ | |
2180 | remote_async_terminal_ours_p = 1; | |
2181 | ||
2182 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2183 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2184 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2185 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2186 | around this. Eventually a mechanism that allows | |
2187 | wait_for_inferior() to expect/get timeouts will be | |
2188 | implemented. */ | |
2189 | wait_forever_enabled_p = 0; | |
2190 | ||
43ff13b4 JM |
2191 | /* Start the remote connection; if error (0), discard this target. |
2192 | In particular, if the user quits, be sure to discard it | |
2193 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2194 | if (!catch_errors (remote_start_remote, NULL, |
2195 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2196 | RETURN_MASK_ALL)) |
2197 | { | |
43ff13b4 | 2198 | pop_target (); |
6426a772 | 2199 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2200 | return; |
2201 | } | |
2202 | ||
6426a772 JM |
2203 | wait_forever_enabled_p = 1; |
2204 | ||
2205 | if (extended_p) | |
43ff13b4 | 2206 | { |
6426a772 JM |
2207 | /* tell the remote that we're using the extended protocol. */ |
2208 | char *buf = alloca (PBUFSIZ); | |
2209 | putpkt ("!"); | |
c2d11a7d | 2210 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2211 | } |
43ff13b4 JM |
2212 | } |
2213 | ||
c906108c SS |
2214 | /* This takes a program previously attached to and detaches it. After |
2215 | this is done, GDB can be used to debug some other program. We | |
2216 | better not have left any breakpoints in the target program or it'll | |
2217 | die when it hits one. */ | |
2218 | ||
2219 | static void | |
fba45db2 | 2220 | remote_detach (char *args, int from_tty) |
c906108c | 2221 | { |
085dd6e6 | 2222 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2223 | |
2224 | if (args) | |
2225 | error ("Argument given to \"detach\" when remotely debugging."); | |
2226 | ||
2227 | /* Tell the remote target to detach. */ | |
2228 | strcpy (buf, "D"); | |
c2d11a7d | 2229 | remote_send (buf, PBUFSIZ); |
c906108c | 2230 | |
cca728d0 | 2231 | target_mourn_inferior (); |
c906108c SS |
2232 | if (from_tty) |
2233 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2234 | |
c906108c SS |
2235 | } |
2236 | ||
43ff13b4 JM |
2237 | /* Same as remote_detach, but with async support. */ |
2238 | static void | |
fba45db2 | 2239 | remote_async_detach (char *args, int from_tty) |
43ff13b4 JM |
2240 | { |
2241 | char *buf = alloca (PBUFSIZ); | |
2242 | ||
2243 | if (args) | |
2244 | error ("Argument given to \"detach\" when remotely debugging."); | |
2245 | ||
2246 | /* Tell the remote target to detach. */ | |
2247 | strcpy (buf, "D"); | |
c2d11a7d | 2248 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2249 | |
2250 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2251 | if (target_is_async_p ()) |
c2c6d25f | 2252 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2253 | |
cca728d0 | 2254 | target_mourn_inferior (); |
43ff13b4 JM |
2255 | if (from_tty) |
2256 | puts_filtered ("Ending remote debugging.\n"); | |
2257 | } | |
2258 | ||
c906108c SS |
2259 | /* Convert hex digit A to a number. */ |
2260 | ||
2261 | int | |
fba45db2 | 2262 | fromhex (int a) |
c906108c SS |
2263 | { |
2264 | if (a >= '0' && a <= '9') | |
2265 | return a - '0'; | |
2266 | else if (a >= 'a' && a <= 'f') | |
2267 | return a - 'a' + 10; | |
2268 | else if (a >= 'A' && a <= 'F') | |
2269 | return a - 'A' + 10; | |
c5aa993b | 2270 | else |
c906108c SS |
2271 | error ("Reply contains invalid hex digit %d", a); |
2272 | } | |
2273 | ||
2274 | /* Convert number NIB to a hex digit. */ | |
2275 | ||
2276 | static int | |
fba45db2 | 2277 | tohex (int nib) |
c906108c SS |
2278 | { |
2279 | if (nib < 10) | |
c5aa993b | 2280 | return '0' + nib; |
c906108c | 2281 | else |
c5aa993b | 2282 | return 'a' + nib - 10; |
c906108c SS |
2283 | } |
2284 | \f | |
2285 | /* Tell the remote machine to resume. */ | |
2286 | ||
2287 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2288 | ||
2289 | static int last_sent_step; | |
2290 | ||
2291 | static void | |
fba45db2 | 2292 | remote_resume (int pid, int step, enum target_signal siggnal) |
c906108c | 2293 | { |
085dd6e6 | 2294 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2295 | |
2296 | if (pid == -1) | |
2297 | set_thread (0, 0); /* run any thread */ | |
2298 | else | |
2299 | set_thread (pid, 0); /* run this thread */ | |
2300 | ||
c906108c SS |
2301 | last_sent_signal = siggnal; |
2302 | last_sent_step = step; | |
2303 | ||
2304 | /* A hook for when we need to do something at the last moment before | |
2305 | resumption. */ | |
2306 | if (target_resume_hook) | |
2307 | (*target_resume_hook) (); | |
2308 | ||
2309 | if (siggnal != TARGET_SIGNAL_0) | |
2310 | { | |
2311 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2312 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2313 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2314 | buf[3] = '\0'; |
2315 | } | |
2316 | else | |
c5aa993b | 2317 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2318 | |
2319 | putpkt (buf); | |
2320 | } | |
43ff13b4 JM |
2321 | |
2322 | /* Same as remote_resume, but with async support. */ | |
2323 | static void | |
fba45db2 | 2324 | remote_async_resume (int pid, int step, enum target_signal siggnal) |
43ff13b4 JM |
2325 | { |
2326 | char *buf = alloca (PBUFSIZ); | |
2327 | ||
2328 | if (pid == -1) | |
2329 | set_thread (0, 0); /* run any thread */ | |
2330 | else | |
2331 | set_thread (pid, 0); /* run this thread */ | |
2332 | ||
43ff13b4 JM |
2333 | last_sent_signal = siggnal; |
2334 | last_sent_step = step; | |
2335 | ||
2336 | /* A hook for when we need to do something at the last moment before | |
2337 | resumption. */ | |
2338 | if (target_resume_hook) | |
2339 | (*target_resume_hook) (); | |
2340 | ||
43ff13b4 JM |
2341 | if (siggnal != TARGET_SIGNAL_0) |
2342 | { | |
2343 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2344 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2345 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2346 | buf[3] = '\0'; |
2347 | } | |
2348 | else | |
c5aa993b | 2349 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 | 2350 | |
2acceee2 JM |
2351 | /* We are about to start executing the inferior, let's register it |
2352 | with the event loop. NOTE: this is the one place where all the | |
2353 | execution commands end up. We could alternatively do this in each | |
2354 | of the execution commands in infcmd.c.*/ | |
2355 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2356 | into infcmd.c in order to allow inferior function calls to work | |
2357 | NOT asynchronously. */ | |
ed9a39eb | 2358 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2359 | target_async (inferior_event_handler, 0); |
2360 | /* Tell the world that the target is now executing. */ | |
2361 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2362 | this? Instead, should the client of target just assume (for | |
2363 | async targets) that the target is going to start executing? Is | |
2364 | this information already found in the continuation block? */ | |
ed9a39eb | 2365 | if (target_is_async_p ()) |
2acceee2 | 2366 | target_executing = 1; |
43ff13b4 JM |
2367 | putpkt (buf); |
2368 | } | |
c906108c | 2369 | \f |
43ff13b4 JM |
2370 | |
2371 | /* Set up the signal handler for SIGINT, while the target is | |
2372 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2373 | static void | |
fba45db2 | 2374 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2375 | { |
c5aa993b | 2376 | sigint_remote_token = |
43ff13b4 JM |
2377 | create_async_signal_handler (async_remote_interrupt, NULL); |
2378 | signal (SIGINT, handle_remote_sigint); | |
2379 | } | |
2380 | ||
2381 | /* Signal handler for SIGINT, while the target is executing. */ | |
2382 | static void | |
fba45db2 | 2383 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2384 | { |
2385 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2386 | sigint_remote_twice_token = |
43ff13b4 JM |
2387 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2388 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2389 | } | |
2390 | ||
2391 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2392 | sent once. It will take effect the second time that the user sends | |
2393 | a ^C. */ | |
2394 | static void | |
fba45db2 | 2395 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2396 | { |
2397 | signal (sig, handle_sigint); | |
c5aa993b | 2398 | sigint_remote_twice_token = |
2df3850c | 2399 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2400 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2401 | } | |
2402 | ||
6426a772 | 2403 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2404 | to a ^C. */ |
c5aa993b | 2405 | static void |
fba45db2 | 2406 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2407 | { |
2408 | if (remote_debug) | |
2409 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2410 | ||
2411 | target_stop (); | |
2412 | } | |
2413 | ||
2414 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2415 | up on the target alltogether. */ | |
2df3850c | 2416 | void |
fba45db2 | 2417 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2418 | { |
2df3850c JM |
2419 | if (remote_debug) |
2420 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2421 | /* Do something only if the target was not killed by the previous |
2422 | cntl-C. */ | |
2423 | if (target_executing) | |
2424 | { | |
2425 | interrupt_query (); | |
2426 | signal (SIGINT, handle_remote_sigint); | |
2427 | } | |
43ff13b4 JM |
2428 | } |
2429 | ||
2430 | /* Reinstall the usual SIGINT handlers, after the target has | |
2431 | stopped. */ | |
6426a772 JM |
2432 | static void |
2433 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2434 | { |
2435 | signal (SIGINT, handle_sigint); | |
2436 | if (sigint_remote_twice_token) | |
c2c6d25f | 2437 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2438 | if (sigint_remote_token) |
c2c6d25f | 2439 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2440 | } |
2441 | ||
c906108c SS |
2442 | /* Send ^C to target to halt it. Target will respond, and send us a |
2443 | packet. */ | |
507f3c78 | 2444 | static void (*ofunc) (int); |
c906108c | 2445 | |
7a292a7a SS |
2446 | /* The command line interface's stop routine. This function is installed |
2447 | as a signal handler for SIGINT. The first time a user requests a | |
2448 | stop, we call remote_stop to send a break or ^C. If there is no | |
2449 | response from the target (it didn't stop when the user requested it), | |
2450 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2451 | static void |
fba45db2 | 2452 | remote_interrupt (int signo) |
c906108c | 2453 | { |
7a292a7a SS |
2454 | /* If this doesn't work, try more severe steps. */ |
2455 | signal (signo, remote_interrupt_twice); | |
2456 | ||
2457 | if (remote_debug) | |
0f71a2f6 | 2458 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2459 | |
2460 | target_stop (); | |
2461 | } | |
2462 | ||
2463 | /* The user typed ^C twice. */ | |
2464 | ||
2465 | static void | |
fba45db2 | 2466 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2467 | { |
2468 | signal (signo, ofunc); | |
2469 | interrupt_query (); | |
c906108c SS |
2470 | signal (signo, remote_interrupt); |
2471 | } | |
7a292a7a SS |
2472 | |
2473 | /* This is the generic stop called via the target vector. When a target | |
2474 | interrupt is requested, either by the command line or the GUI, we | |
2475 | will eventually end up here. */ | |
c906108c | 2476 | static void |
fba45db2 | 2477 | remote_stop (void) |
c906108c | 2478 | { |
7a292a7a SS |
2479 | /* Send a break or a ^C, depending on user preference. */ |
2480 | if (remote_debug) | |
0f71a2f6 | 2481 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2482 | |
7a292a7a SS |
2483 | if (remote_break) |
2484 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2485 | else |
7a292a7a | 2486 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2487 | } |
2488 | ||
2489 | /* Ask the user what to do when an interrupt is received. */ | |
2490 | ||
2491 | static void | |
fba45db2 | 2492 | interrupt_query (void) |
c906108c SS |
2493 | { |
2494 | target_terminal_ours (); | |
2495 | ||
2496 | if (query ("Interrupted while waiting for the program.\n\ | |
2497 | Give up (and stop debugging it)? ")) | |
2498 | { | |
2499 | target_mourn_inferior (); | |
2500 | return_to_top_level (RETURN_QUIT); | |
2501 | } | |
2502 | ||
2503 | target_terminal_inferior (); | |
2504 | } | |
2505 | ||
6426a772 JM |
2506 | /* Enable/disable target terminal ownership. Most targets can use |
2507 | terminal groups to control terminal ownership. Remote targets are | |
2508 | different in that explicit transfer of ownership to/from GDB/target | |
2509 | is required. */ | |
2510 | ||
2511 | static void | |
2512 | remote_async_terminal_inferior (void) | |
2513 | { | |
2514 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2515 | sync_execution here. This function should only be called when | |
2516 | GDB is resuming the inferior in the forground. A background | |
2517 | resume (``run&'') should leave GDB in control of the terminal and | |
2518 | consequently should not call this code. */ | |
2519 | if (!sync_execution) | |
2520 | return; | |
2521 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2522 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2523 | to an asynchronous target with a synchronous command calls this | |
2524 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2525 | stops trying to transfer the terminal to the target when it | |
2526 | shouldn't this guard can go away. */ | |
2527 | if (!remote_async_terminal_ours_p) | |
2528 | return; | |
2529 | delete_file_handler (input_fd); | |
2530 | remote_async_terminal_ours_p = 0; | |
2531 | initialize_sigint_signal_handler (); | |
2532 | /* NOTE: At this point we could also register our selves as the | |
2533 | recipient of all input. Any characters typed could then be | |
2534 | passed on down to the target. */ | |
2535 | } | |
2536 | ||
2537 | static void | |
2538 | remote_async_terminal_ours (void) | |
2539 | { | |
2540 | /* See FIXME in remote_async_terminal_inferior. */ | |
2541 | if (!sync_execution) | |
2542 | return; | |
2543 | /* See FIXME in remote_async_terminal_inferior. */ | |
2544 | if (remote_async_terminal_ours_p) | |
2545 | return; | |
2546 | cleanup_sigint_signal_handler (NULL); | |
2547 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2548 | remote_async_terminal_ours_p = 1; | |
2549 | } | |
2550 | ||
c906108c SS |
2551 | /* If nonzero, ignore the next kill. */ |
2552 | ||
2553 | int kill_kludge; | |
2554 | ||
2555 | void | |
917317f4 | 2556 | remote_console_output (char *msg) |
c906108c SS |
2557 | { |
2558 | char *p; | |
2559 | ||
c5aa993b | 2560 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2561 | { |
2562 | char tb[2]; | |
2563 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2564 | tb[0] = c; | |
2565 | tb[1] = 0; | |
43ff13b4 | 2566 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2567 | } |
917317f4 | 2568 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2569 | } |
2570 | ||
0f71a2f6 JM |
2571 | /* Wait until the remote machine stops, then return, |
2572 | storing status in STATUS just as `wait' would. | |
2573 | Returns "pid", which in the case of a multi-threaded | |
2574 | remote OS, is the thread-id. */ | |
c906108c SS |
2575 | |
2576 | static int | |
fba45db2 | 2577 | remote_wait (int pid, struct target_waitstatus *status) |
c906108c | 2578 | { |
085dd6e6 | 2579 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2580 | int thread_num = -1; |
2581 | ||
2582 | status->kind = TARGET_WAITKIND_EXITED; | |
2583 | status->value.integer = 0; | |
2584 | ||
2585 | while (1) | |
2586 | { | |
2587 | unsigned char *p; | |
2588 | ||
c906108c | 2589 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2590 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2591 | signal (SIGINT, ofunc); |
2592 | ||
2593 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2594 | collection of trace data) every time the target stops. */ |
c906108c SS |
2595 | if (target_wait_loop_hook) |
2596 | (*target_wait_loop_hook) (); | |
2597 | ||
2598 | switch (buf[0]) | |
2599 | { | |
2600 | case 'E': /* Error of some sort */ | |
2601 | warning ("Remote failure reply: %s", buf); | |
2602 | continue; | |
2603 | case 'T': /* Status with PC, SP, FP, ... */ | |
2604 | { | |
2605 | int i; | |
2606 | long regno; | |
2607 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2608 | ||
2609 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2610 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2611 | ss = signal number |
2612 | n... = register number | |
2613 | r... = register contents | |
2614 | */ | |
c906108c SS |
2615 | p = &buf[3]; /* after Txx */ |
2616 | ||
2617 | while (*p) | |
2618 | { | |
2619 | unsigned char *p1; | |
2620 | char *p_temp; | |
2621 | ||
2622 | /* Read the register number */ | |
2623 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2624 | p1 = (unsigned char *) p_temp; |
c906108c | 2625 | |
c5aa993b | 2626 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2627 | { |
2628 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2629 | if (p1 == NULL) | |
2630 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2631 | Packet: '%s'\n", | |
2632 | p, buf); | |
2633 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2634 | { | |
2635 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2636 | record_currthread (thread_num); | |
2637 | p = (unsigned char *) p_temp; | |
2638 | } | |
2639 | } | |
2640 | else | |
2641 | { | |
2642 | p = p1; | |
2643 | ||
2644 | if (*p++ != ':') | |
2645 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2646 | Packet: '%s'\n", | |
2647 | p, buf); | |
2648 | ||
2649 | if (regno >= NUM_REGS) | |
2650 | warning ("Remote sent bad register number %ld: %s\n\ | |
2651 | Packet: '%s'\n", | |
2652 | regno, p, buf); | |
2653 | ||
2654 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2655 | { | |
2656 | if (p[0] == 0 || p[1] == 0) | |
2657 | warning ("Remote reply is too short: %s", buf); | |
2658 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2659 | p += 2; | |
2660 | } | |
2661 | supply_register (regno, regs); | |
2662 | } | |
2663 | ||
2664 | if (*p++ != ';') | |
2665 | { | |
2666 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2667 | warning (" here: %s", p); |
c906108c SS |
2668 | } |
2669 | } | |
2670 | } | |
2671 | /* fall through */ | |
2672 | case 'S': /* Old style status, just signal only */ | |
2673 | status->kind = TARGET_WAITKIND_STOPPED; | |
2674 | status->value.sig = (enum target_signal) | |
2675 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2676 | ||
0f71a2f6 JM |
2677 | if (buf[3] == 'p') |
2678 | { | |
2679 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2680 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2681 | |
2682 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2683 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2684 | value_from_string ("PDEBUG-")); |
2685 | cisco_kernel_mode = 0; | |
2686 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2687 | record_currthread (thread_num); | |
2688 | } | |
2689 | else if (buf[3] == 'k') | |
2690 | { | |
2691 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2692 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2693 | |
2694 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2695 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2696 | value_from_string ("KDEBUG-")); |
2697 | cisco_kernel_mode = 1; | |
2698 | } | |
c906108c | 2699 | goto got_status; |
0f71a2f6 JM |
2700 | case 'N': /* Cisco special: status and offsets */ |
2701 | { | |
2702 | bfd_vma text_addr, data_addr, bss_addr; | |
2703 | bfd_signed_vma text_off, data_off, bss_off; | |
2704 | unsigned char *p1; | |
2705 | ||
2706 | status->kind = TARGET_WAITKIND_STOPPED; | |
2707 | status->value.sig = (enum target_signal) | |
2708 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2709 | ||
c5aa993b | 2710 | if (symfile_objfile == NULL) |
0f71a2f6 | 2711 | { |
d4f3574e | 2712 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2713 | Packet Dropped"); |
2714 | goto got_status; | |
2715 | } | |
2716 | ||
2717 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2718 | * where AA is the signal number, TT is the new text | |
2719 | * address, DD * is the new data address, and BB is the | |
2720 | * new bss address. */ | |
2721 | ||
2722 | p = &buf[3]; | |
2723 | text_addr = strtoul (p, (char **) &p1, 16); | |
2724 | if (p1 == p || *p1 != ';') | |
2725 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2726 | p = p1 + 1; | |
2727 | data_addr = strtoul (p, (char **) &p1, 16); | |
2728 | if (p1 == p || *p1 != ';') | |
2729 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2730 | p = p1 + 1; | |
2731 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2732 | if (p1 == p) |
0f71a2f6 JM |
2733 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2734 | ||
2735 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2736 | &text_off, &data_off, &bss_off) | |
2737 | == 0) | |
c5aa993b | 2738 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2739 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2740 | ||
2741 | goto got_status; | |
2742 | } | |
c906108c SS |
2743 | case 'W': /* Target exited */ |
2744 | { | |
2745 | /* The remote process exited. */ | |
2746 | status->kind = TARGET_WAITKIND_EXITED; | |
2747 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2748 | goto got_status; | |
2749 | } | |
2750 | case 'X': | |
2751 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2752 | status->value.sig = (enum target_signal) | |
2753 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2754 | kill_kludge = 1; | |
2755 | ||
2756 | goto got_status; | |
2757 | case 'O': /* Console output */ | |
2758 | remote_console_output (buf + 1); | |
2759 | continue; | |
2760 | case '\0': | |
2761 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2762 | { | |
2763 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2764 | the remote system doesn't support it. */ |
c906108c SS |
2765 | target_terminal_ours_for_output (); |
2766 | printf_filtered | |
2767 | ("Can't send signals to this remote system. %s not sent.\n", | |
2768 | target_signal_to_name (last_sent_signal)); | |
2769 | last_sent_signal = TARGET_SIGNAL_0; | |
2770 | target_terminal_inferior (); | |
2771 | ||
2772 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2773 | putpkt ((char *) buf); | |
2774 | continue; | |
2775 | } | |
2776 | /* else fallthrough */ | |
2777 | default: | |
2778 | warning ("Invalid remote reply: %s", buf); | |
2779 | continue; | |
2780 | } | |
2781 | } | |
c5aa993b | 2782 | got_status: |
c906108c SS |
2783 | if (thread_num != -1) |
2784 | { | |
c906108c SS |
2785 | return thread_num; |
2786 | } | |
2787 | return inferior_pid; | |
2788 | } | |
2789 | ||
43ff13b4 JM |
2790 | /* Async version of remote_wait. */ |
2791 | static int | |
fba45db2 | 2792 | remote_async_wait (int pid, struct target_waitstatus *status) |
43ff13b4 JM |
2793 | { |
2794 | unsigned char *buf = alloca (PBUFSIZ); | |
2795 | int thread_num = -1; | |
2796 | ||
2797 | status->kind = TARGET_WAITKIND_EXITED; | |
2798 | status->value.integer = 0; | |
2799 | ||
2800 | while (1) | |
2801 | { | |
2802 | unsigned char *p; | |
c5aa993b | 2803 | |
ed9a39eb | 2804 | if (!target_is_async_p ()) |
43ff13b4 | 2805 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2806 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2807 | _never_ wait for ever -> test on target_is_async_p(). | |
2808 | However, before we do that we need to ensure that the caller | |
2809 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 2810 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 2811 | if (!target_is_async_p ()) |
43ff13b4 JM |
2812 | signal (SIGINT, ofunc); |
2813 | ||
2814 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2815 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2816 | if (target_wait_loop_hook) |
2817 | (*target_wait_loop_hook) (); | |
2818 | ||
2819 | switch (buf[0]) | |
2820 | { | |
2821 | case 'E': /* Error of some sort */ | |
2822 | warning ("Remote failure reply: %s", buf); | |
2823 | continue; | |
2824 | case 'T': /* Status with PC, SP, FP, ... */ | |
2825 | { | |
2826 | int i; | |
2827 | long regno; | |
2828 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2829 | ||
2830 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2831 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2832 | ss = signal number |
2833 | n... = register number | |
2834 | r... = register contents | |
2835 | */ | |
43ff13b4 JM |
2836 | p = &buf[3]; /* after Txx */ |
2837 | ||
2838 | while (*p) | |
2839 | { | |
2840 | unsigned char *p1; | |
2841 | char *p_temp; | |
2842 | ||
2843 | /* Read the register number */ | |
2844 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2845 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2846 | |
c5aa993b | 2847 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2848 | { |
2849 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2850 | if (p1 == NULL) | |
2851 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2852 | Packet: '%s'\n", | |
2853 | p, buf); | |
2854 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2855 | { | |
2856 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2857 | record_currthread (thread_num); | |
2858 | p = (unsigned char *) p_temp; | |
2859 | } | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | p = p1; | |
2864 | ||
2865 | if (*p++ != ':') | |
2866 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2867 | Packet: '%s'\n", | |
2868 | p, buf); | |
2869 | ||
2870 | if (regno >= NUM_REGS) | |
2871 | warning ("Remote sent bad register number %ld: %s\n\ | |
2872 | Packet: '%s'\n", | |
2873 | regno, p, buf); | |
2874 | ||
2875 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2876 | { | |
2877 | if (p[0] == 0 || p[1] == 0) | |
2878 | warning ("Remote reply is too short: %s", buf); | |
2879 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2880 | p += 2; | |
2881 | } | |
2882 | supply_register (regno, regs); | |
2883 | } | |
2884 | ||
2885 | if (*p++ != ';') | |
2886 | { | |
2887 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2888 | warning (" here: %s", p); |
43ff13b4 JM |
2889 | } |
2890 | } | |
2891 | } | |
2892 | /* fall through */ | |
2893 | case 'S': /* Old style status, just signal only */ | |
2894 | status->kind = TARGET_WAITKIND_STOPPED; | |
2895 | status->value.sig = (enum target_signal) | |
2896 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2897 | ||
2898 | if (buf[3] == 'p') | |
2899 | { | |
2900 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2901 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2902 | |
2903 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2904 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2905 | value_from_string ("PDEBUG-")); |
2906 | cisco_kernel_mode = 0; | |
2907 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2908 | record_currthread (thread_num); | |
2909 | } | |
2910 | else if (buf[3] == 'k') | |
2911 | { | |
2912 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2913 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2914 | |
2915 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2916 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2917 | value_from_string ("KDEBUG-")); |
2918 | cisco_kernel_mode = 1; | |
2919 | } | |
2920 | goto got_status; | |
2921 | case 'N': /* Cisco special: status and offsets */ | |
2922 | { | |
2923 | bfd_vma text_addr, data_addr, bss_addr; | |
2924 | bfd_signed_vma text_off, data_off, bss_off; | |
2925 | unsigned char *p1; | |
2926 | ||
2927 | status->kind = TARGET_WAITKIND_STOPPED; | |
2928 | status->value.sig = (enum target_signal) | |
2929 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2930 | ||
c5aa993b | 2931 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2932 | { |
2933 | warning ("Relocation packet recieved with no symbol file. \ | |
2934 | Packet Dropped"); | |
2935 | goto got_status; | |
2936 | } | |
2937 | ||
2938 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2939 | * where AA is the signal number, TT is the new text | |
2940 | * address, DD * is the new data address, and BB is the | |
2941 | * new bss address. */ | |
2942 | ||
2943 | p = &buf[3]; | |
2944 | text_addr = strtoul (p, (char **) &p1, 16); | |
2945 | if (p1 == p || *p1 != ';') | |
2946 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2947 | p = p1 + 1; | |
2948 | data_addr = strtoul (p, (char **) &p1, 16); | |
2949 | if (p1 == p || *p1 != ';') | |
2950 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2951 | p = p1 + 1; | |
2952 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2953 | if (p1 == p) |
43ff13b4 JM |
2954 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2955 | ||
2956 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2957 | &text_off, &data_off, &bss_off) | |
2958 | == 0) | |
c5aa993b | 2959 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2960 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2961 | ||
2962 | goto got_status; | |
2963 | } | |
2964 | case 'W': /* Target exited */ | |
2965 | { | |
2966 | /* The remote process exited. */ | |
2967 | status->kind = TARGET_WAITKIND_EXITED; | |
2968 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2969 | goto got_status; | |
2970 | } | |
2971 | case 'X': | |
2972 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2973 | status->value.sig = (enum target_signal) | |
2974 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2975 | kill_kludge = 1; | |
2976 | ||
2977 | goto got_status; | |
2978 | case 'O': /* Console output */ | |
2979 | remote_console_output (buf + 1); | |
c4093a6a JM |
2980 | /* Return immediately to the event loop. The event loop will |
2981 | still be waiting on the inferior afterwards. */ | |
2982 | status->kind = TARGET_WAITKIND_IGNORE; | |
2983 | goto got_status; | |
43ff13b4 JM |
2984 | case '\0': |
2985 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2986 | { | |
2987 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2988 | the remote system doesn't support it. */ |
43ff13b4 JM |
2989 | target_terminal_ours_for_output (); |
2990 | printf_filtered | |
2991 | ("Can't send signals to this remote system. %s not sent.\n", | |
2992 | target_signal_to_name (last_sent_signal)); | |
2993 | last_sent_signal = TARGET_SIGNAL_0; | |
2994 | target_terminal_inferior (); | |
2995 | ||
2996 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2997 | putpkt ((char *) buf); | |
2998 | continue; | |
2999 | } | |
3000 | /* else fallthrough */ | |
3001 | default: | |
3002 | warning ("Invalid remote reply: %s", buf); | |
3003 | continue; | |
3004 | } | |
3005 | } | |
c5aa993b | 3006 | got_status: |
43ff13b4 JM |
3007 | if (thread_num != -1) |
3008 | { | |
3009 | return thread_num; | |
3010 | } | |
3011 | return inferior_pid; | |
3012 | } | |
3013 | ||
c906108c SS |
3014 | /* Number of bytes of registers this stub implements. */ |
3015 | ||
3016 | static int register_bytes_found; | |
3017 | ||
3018 | /* Read the remote registers into the block REGS. */ | |
3019 | /* Currently we just read all the registers, so we don't use regno. */ | |
3020 | ||
3021 | /* ARGSUSED */ | |
3022 | static void | |
fba45db2 | 3023 | remote_fetch_registers (int regno) |
c906108c | 3024 | { |
085dd6e6 | 3025 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3026 | int i; |
3027 | char *p; | |
3028 | char regs[REGISTER_BYTES]; | |
3029 | ||
3030 | set_thread (inferior_pid, 1); | |
3031 | ||
3032 | sprintf (buf, "g"); | |
c2d11a7d | 3033 | remote_send (buf, PBUFSIZ); |
c906108c | 3034 | |
11cf8741 JM |
3035 | /* Save the size of the packet sent to us by the target. Its used |
3036 | as a heuristic when determining the max size of packets that the | |
3037 | target can safely receive. */ | |
3038 | if (actual_register_packet_size == 0) | |
3039 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
3040 | |
3041 | /* Unimplemented registers read as all bits zero. */ | |
3042 | memset (regs, 0, REGISTER_BYTES); | |
3043 | ||
3044 | /* We can get out of synch in various cases. If the first character | |
3045 | in the buffer is not a hex character, assume that has happened | |
3046 | and try to fetch another packet to read. */ | |
3047 | while ((buf[0] < '0' || buf[0] > '9') | |
3048 | && (buf[0] < 'a' || buf[0] > 'f') | |
3049 | && buf[0] != 'x') /* New: unavailable register value */ | |
3050 | { | |
3051 | if (remote_debug) | |
0f71a2f6 JM |
3052 | fprintf_unfiltered (gdb_stdlog, |
3053 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 3054 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3055 | } |
3056 | ||
3057 | /* Reply describes registers byte by byte, each byte encoded as two | |
3058 | hex characters. Suck them all up, then supply them to the | |
3059 | register cacheing/storage mechanism. */ | |
3060 | ||
3061 | p = buf; | |
3062 | for (i = 0; i < REGISTER_BYTES; i++) | |
3063 | { | |
3064 | if (p[0] == 0) | |
3065 | break; | |
3066 | if (p[1] == 0) | |
3067 | { | |
3068 | warning ("Remote reply is of odd length: %s", buf); | |
3069 | /* Don't change register_bytes_found in this case, and don't | |
3070 | print a second warning. */ | |
3071 | goto supply_them; | |
3072 | } | |
3073 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3074 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3075 | else |
3076 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3077 | p += 2; | |
3078 | } | |
3079 | ||
3080 | if (i != register_bytes_found) | |
3081 | { | |
3082 | register_bytes_found = i; | |
3083 | #ifdef REGISTER_BYTES_OK | |
3084 | if (!REGISTER_BYTES_OK (i)) | |
3085 | warning ("Remote reply is too short: %s", buf); | |
3086 | #endif | |
3087 | } | |
c5aa993b JM |
3088 | |
3089 | supply_them: | |
c906108c | 3090 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3091 | { |
3092 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3093 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
3094 | register_valid[i] = -1; /* register value not available */ | |
3095 | } | |
c906108c SS |
3096 | } |
3097 | ||
3098 | /* Prepare to store registers. Since we may send them all (using a | |
3099 | 'G' request), we have to read out the ones we don't want to change | |
3100 | first. */ | |
3101 | ||
c5aa993b | 3102 | static void |
fba45db2 | 3103 | remote_prepare_to_store (void) |
c906108c SS |
3104 | { |
3105 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3106 | switch (remote_protocol_P.support) |
3107 | { | |
3108 | case PACKET_DISABLE: | |
3109 | case PACKET_SUPPORT_UNKNOWN: | |
3110 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3111 | break; | |
3112 | case PACKET_ENABLE: | |
3113 | break; | |
3114 | } | |
3115 | } | |
3116 | ||
3117 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3118 | packet was not recognized. */ | |
3119 | ||
3120 | static int | |
c2d11a7d | 3121 | store_register_using_P (int regno) |
5a2468f5 JM |
3122 | { |
3123 | /* Try storing a single register. */ | |
3124 | char *buf = alloca (PBUFSIZ); | |
3125 | char *regp; | |
3126 | char *p; | |
3127 | int i; | |
3128 | ||
3129 | sprintf (buf, "P%x=", regno); | |
3130 | p = buf + strlen (buf); | |
3131 | regp = ®isters[REGISTER_BYTE (regno)]; | |
3132 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) | |
3133 | { | |
3134 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
3135 | *p++ = tohex (regp[i] & 0xf); | |
3136 | } | |
3137 | *p = '\0'; | |
c2d11a7d | 3138 | remote_send (buf, PBUFSIZ); |
5a2468f5 JM |
3139 | |
3140 | return buf[0] != '\0'; | |
c906108c SS |
3141 | } |
3142 | ||
5a2468f5 | 3143 | |
c906108c SS |
3144 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
3145 | of REGISTERS. FIXME: ignores errors. */ | |
3146 | ||
3147 | static void | |
fba45db2 | 3148 | remote_store_registers (int regno) |
c906108c | 3149 | { |
085dd6e6 | 3150 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3151 | int i; |
3152 | char *p; | |
3153 | ||
3154 | set_thread (inferior_pid, 1); | |
3155 | ||
5a2468f5 | 3156 | if (regno >= 0) |
c906108c | 3157 | { |
5a2468f5 | 3158 | switch (remote_protocol_P.support) |
c906108c | 3159 | { |
5a2468f5 JM |
3160 | case PACKET_DISABLE: |
3161 | break; | |
3162 | case PACKET_ENABLE: | |
3163 | if (store_register_using_P (regno)) | |
3164 | return; | |
3165 | else | |
3166 | error ("Protocol error: P packet not recognized by stub"); | |
3167 | case PACKET_SUPPORT_UNKNOWN: | |
3168 | if (store_register_using_P (regno)) | |
3169 | { | |
3170 | /* The stub recognized the 'P' packet. Remember this. */ | |
3171 | remote_protocol_P.support = PACKET_ENABLE; | |
3172 | return; | |
3173 | } | |
3174 | else | |
3175 | { | |
3176 | /* The stub does not support the 'P' packet. Use 'G' | |
3177 | instead, and don't try using 'P' in the future (it | |
3178 | will just waste our time). */ | |
3179 | remote_protocol_P.support = PACKET_DISABLE; | |
3180 | break; | |
3181 | } | |
c906108c | 3182 | } |
c906108c SS |
3183 | } |
3184 | ||
3185 | buf[0] = 'G'; | |
3186 | ||
3187 | /* Command describes registers byte by byte, | |
3188 | each byte encoded as two hex characters. */ | |
3189 | ||
3190 | p = buf + 1; | |
3191 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3192 | for (i = 0; i < register_bytes_found; i++) | |
3193 | { | |
3194 | *p++ = tohex ((registers[i] >> 4) & 0xf); | |
3195 | *p++ = tohex (registers[i] & 0xf); | |
3196 | } | |
3197 | *p = '\0'; | |
3198 | ||
c2d11a7d | 3199 | remote_send (buf, PBUFSIZ); |
c906108c | 3200 | } |
c906108c SS |
3201 | \f |
3202 | ||
3203 | /* Return the number of hex digits in num. */ | |
3204 | ||
3205 | static int | |
fba45db2 | 3206 | hexnumlen (ULONGEST num) |
c906108c SS |
3207 | { |
3208 | int i; | |
3209 | ||
3210 | for (i = 0; num != 0; i++) | |
3211 | num >>= 4; | |
3212 | ||
3213 | return max (i, 1); | |
3214 | } | |
3215 | ||
2df3850c | 3216 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3217 | |
3218 | static int | |
fba45db2 | 3219 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3220 | { |
c906108c | 3221 | int len = hexnumlen (num); |
2df3850c JM |
3222 | return hexnumnstr (buf, num, len); |
3223 | } | |
3224 | ||
c906108c | 3225 | |
2df3850c | 3226 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3227 | |
2df3850c | 3228 | static int |
fba45db2 | 3229 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3230 | { |
3231 | int i; | |
3232 | ||
3233 | buf[width] = '\0'; | |
3234 | ||
3235 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3236 | { |
c5aa993b | 3237 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3238 | num >>= 4; |
3239 | } | |
3240 | ||
2df3850c | 3241 | return width; |
c906108c SS |
3242 | } |
3243 | ||
3244 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3245 | ||
3246 | static CORE_ADDR | |
fba45db2 | 3247 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3248 | { |
3249 | if (remote_address_size > 0 | |
3250 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3251 | { | |
3252 | /* Only create a mask when that mask can safely be constructed | |
3253 | in a ULONGEST variable. */ | |
3254 | ULONGEST mask = 1; | |
3255 | mask = (mask << remote_address_size) - 1; | |
3256 | addr &= mask; | |
3257 | } | |
3258 | return addr; | |
3259 | } | |
3260 | ||
3261 | /* Determine whether the remote target supports binary downloading. | |
3262 | This is accomplished by sending a no-op memory write of zero length | |
3263 | to the target at the specified address. It does not suffice to send | |
3264 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3265 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3266 | ||
96baa820 JM |
3267 | NOTE: This can still lose if the serial line is not eight-bit |
3268 | clean. In cases like this, the user should clear "remote | |
3269 | X-packet". */ | |
3270 | ||
c906108c | 3271 | static void |
fba45db2 | 3272 | check_binary_download (CORE_ADDR addr) |
c906108c | 3273 | { |
96baa820 | 3274 | switch (remote_protocol_binary_download.support) |
c906108c | 3275 | { |
96baa820 JM |
3276 | case PACKET_DISABLE: |
3277 | break; | |
3278 | case PACKET_ENABLE: | |
3279 | break; | |
3280 | case PACKET_SUPPORT_UNKNOWN: | |
3281 | { | |
3282 | char *buf = alloca (PBUFSIZ); | |
3283 | char *p; | |
3284 | ||
3285 | p = buf; | |
3286 | *p++ = 'X'; | |
3287 | p += hexnumstr (p, (ULONGEST) addr); | |
3288 | *p++ = ','; | |
3289 | p += hexnumstr (p, (ULONGEST) 0); | |
3290 | *p++ = ':'; | |
3291 | *p = '\0'; | |
3292 | ||
3293 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3294 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3295 | |
96baa820 JM |
3296 | if (buf[0] == '\0') |
3297 | { | |
3298 | if (remote_debug) | |
3299 | fprintf_unfiltered (gdb_stdlog, | |
3300 | "binary downloading NOT suppported by target\n"); | |
3301 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3302 | } | |
3303 | else | |
3304 | { | |
3305 | if (remote_debug) | |
3306 | fprintf_unfiltered (gdb_stdlog, | |
3307 | "binary downloading suppported by target\n"); | |
3308 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3309 | } | |
3310 | break; | |
3311 | } | |
c906108c SS |
3312 | } |
3313 | } | |
3314 | ||
3315 | /* Write memory data directly to the remote machine. | |
3316 | This does not inform the data cache; the data cache uses this. | |
3317 | MEMADDR is the address in the remote memory space. | |
3318 | MYADDR is the address of the buffer in our space. | |
3319 | LEN is the number of bytes. | |
3320 | ||
917317f4 JM |
3321 | Returns number of bytes transferred, or 0 (setting errno) for |
3322 | error. Only transfer a single packet. */ | |
c906108c SS |
3323 | |
3324 | static int | |
917317f4 | 3325 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3326 | { |
917317f4 | 3327 | unsigned char *buf; |
c906108c | 3328 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3329 | unsigned char *p; |
3330 | unsigned char *plen; | |
c2d11a7d | 3331 | long sizeof_buf; |
917317f4 JM |
3332 | int plenlen; |
3333 | int todo; | |
3334 | int nr_bytes; | |
c906108c SS |
3335 | |
3336 | /* Verify that the target can support a binary download */ | |
3337 | check_binary_download (memaddr); | |
3338 | ||
917317f4 | 3339 | /* Determine the max packet size. */ |
11cf8741 | 3340 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3341 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3342 | buf = alloca (sizeof_buf); | |
c906108c | 3343 | |
7a292a7a | 3344 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3345 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3346 | ||
917317f4 JM |
3347 | /* construct "M"<memaddr>","<len>":" */ |
3348 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3349 | p = buf; | |
3350 | ||
3351 | /* Append [XM]. Compute a best guess of the number of bytes | |
3352 | actually transfered. */ | |
3353 | switch (remote_protocol_binary_download.support) | |
c906108c | 3354 | { |
917317f4 JM |
3355 | case PACKET_ENABLE: |
3356 | *p++ = 'X'; | |
3357 | /* Best guess at number of bytes that will fit. */ | |
3358 | todo = min (len, max_buf_size); | |
3359 | break; | |
3360 | case PACKET_DISABLE: | |
3361 | *p++ = 'M'; | |
3362 | /* num bytes that will fit */ | |
3363 | todo = min (len, max_buf_size / 2); | |
3364 | break; | |
3365 | case PACKET_SUPPORT_UNKNOWN: | |
3366 | internal_error ("remote_write_bytes: bad switch"); | |
3367 | } | |
3368 | ||
3369 | /* Append <memaddr> */ | |
3370 | memaddr = remote_address_masked (memaddr); | |
3371 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3372 | *p++ = ','; | |
3373 | ||
3374 | /* Append <len>. Retain the location/size of <len>. It may | |
3375 | need to be adjusted once the packet body has been created. */ | |
3376 | plen = p; | |
3377 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3378 | p += plenlen; | |
3379 | *p++ = ':'; | |
3380 | *p = '\0'; | |
3381 | ||
3382 | /* Append the packet body. */ | |
3383 | switch (remote_protocol_binary_download.support) | |
3384 | { | |
3385 | case PACKET_ENABLE: | |
3386 | /* Binary mode. Send target system values byte by byte, in | |
3387 | increasing byte addresses. Only escape certain critical | |
3388 | characters. */ | |
3389 | for (nr_bytes = 0; | |
3390 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3391 | nr_bytes++) | |
c906108c | 3392 | { |
917317f4 JM |
3393 | switch (myaddr[nr_bytes] & 0xff) |
3394 | { | |
3395 | case '$': | |
3396 | case '#': | |
3397 | case 0x7d: | |
3398 | /* These must be escaped */ | |
3399 | *p++ = 0x7d; | |
3400 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3401 | break; | |
3402 | default: | |
3403 | *p++ = myaddr[nr_bytes] & 0xff; | |
3404 | break; | |
3405 | } | |
c906108c | 3406 | } |
917317f4 | 3407 | if (nr_bytes < todo) |
c906108c | 3408 | { |
917317f4 JM |
3409 | /* Escape chars have filled up the buffer prematurely, |
3410 | and we have actually sent fewer bytes than planned. | |
3411 | Fix-up the length field of the packet. Use the same | |
3412 | number of characters as before. */ | |
3413 | ||
3414 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3415 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3416 | } |
917317f4 JM |
3417 | break; |
3418 | case PACKET_DISABLE: | |
3419 | /* Normal mode: Send target system values byte by byte, in | |
3420 | increasing byte addresses. Each byte is encoded as a two hex | |
3421 | value. */ | |
3422 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3423 | { |
917317f4 JM |
3424 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3425 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3426 | } |
917317f4 JM |
3427 | *p = '\0'; |
3428 | break; | |
3429 | case PACKET_SUPPORT_UNKNOWN: | |
3430 | internal_error ("remote_write_bytes: bad switch"); | |
c906108c | 3431 | } |
917317f4 JM |
3432 | |
3433 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3434 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3435 | |
3436 | if (buf[0] == 'E') | |
3437 | { | |
3438 | /* There is no correspondance between what the remote protocol | |
3439 | uses for errors and errno codes. We would like a cleaner way | |
3440 | of representing errors (big enough to include errno codes, | |
3441 | bfd_error codes, and others). But for now just return EIO. */ | |
3442 | errno = EIO; | |
3443 | return 0; | |
3444 | } | |
3445 | ||
3446 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3447 | bytes than we'd planned. */ | |
3448 | return nr_bytes; | |
c906108c SS |
3449 | } |
3450 | ||
3451 | /* Read memory data directly from the remote machine. | |
3452 | This does not use the data cache; the data cache uses this. | |
3453 | MEMADDR is the address in the remote memory space. | |
3454 | MYADDR is the address of the buffer in our space. | |
3455 | LEN is the number of bytes. | |
3456 | ||
3457 | Returns number of bytes transferred, or 0 for error. */ | |
3458 | ||
917317f4 JM |
3459 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3460 | remote targets) shouldn't attempt to read the entire buffer. | |
3461 | Instead it should read a single packet worth of data and then | |
3462 | return the byte size of that packet to the caller. The caller (its | |
3463 | caller and its callers caller ;-) already contains code for | |
3464 | handling partial reads. */ | |
3465 | ||
c906108c | 3466 | static int |
fba45db2 | 3467 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3468 | { |
11cf8741 | 3469 | char *buf; |
c906108c | 3470 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3471 | long sizeof_buf; |
c906108c SS |
3472 | int origlen; |
3473 | ||
11cf8741 JM |
3474 | /* Create a buffer big enough for this packet. */ |
3475 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3476 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3477 | buf = alloca (sizeof_buf); | |
c906108c SS |
3478 | |
3479 | origlen = len; | |
3480 | while (len > 0) | |
3481 | { | |
c906108c SS |
3482 | char *p; |
3483 | int todo; | |
3484 | int i; | |
3485 | ||
c5aa993b | 3486 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3487 | |
3488 | /* construct "m"<memaddr>","<len>" */ | |
3489 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3490 | memaddr = remote_address_masked (memaddr); | |
3491 | p = buf; | |
3492 | *p++ = 'm'; | |
3493 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3494 | *p++ = ','; | |
3495 | p += hexnumstr (p, (ULONGEST) todo); | |
3496 | *p = '\0'; | |
3497 | ||
3498 | putpkt (buf); | |
c2d11a7d | 3499 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3500 | |
3501 | if (buf[0] == 'E') | |
3502 | { | |
3503 | /* There is no correspondance between what the remote protocol uses | |
3504 | for errors and errno codes. We would like a cleaner way of | |
3505 | representing errors (big enough to include errno codes, bfd_error | |
3506 | codes, and others). But for now just return EIO. */ | |
3507 | errno = EIO; | |
3508 | return 0; | |
3509 | } | |
3510 | ||
c5aa993b JM |
3511 | /* Reply describes memory byte by byte, |
3512 | each byte encoded as two hex characters. */ | |
c906108c SS |
3513 | |
3514 | p = buf; | |
3515 | for (i = 0; i < todo; i++) | |
3516 | { | |
3517 | if (p[0] == 0 || p[1] == 0) | |
3518 | /* Reply is short. This means that we were able to read | |
3519 | only part of what we wanted to. */ | |
3520 | return i + (origlen - len); | |
3521 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3522 | p += 2; | |
3523 | } | |
3524 | myaddr += todo; | |
3525 | memaddr += todo; | |
3526 | len -= todo; | |
3527 | } | |
3528 | return origlen; | |
3529 | } | |
3530 | \f | |
3531 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3532 | transferring to or from debugger address BUFFER. Write to inferior if |
3533 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3534 | for error. TARGET is unused. */ |
392a587b | 3535 | |
c906108c SS |
3536 | /* ARGSUSED */ |
3537 | static int | |
c338868a KB |
3538 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
3539 | int should_write, struct target_ops *target) | |
c906108c | 3540 | { |
392a587b JM |
3541 | CORE_ADDR targ_addr; |
3542 | int targ_len; | |
4930751a C |
3543 | int res; |
3544 | ||
392a587b JM |
3545 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3546 | if (targ_len <= 0) | |
c906108c | 3547 | return 0; |
c906108c | 3548 | |
4930751a C |
3549 | if (should_write) |
3550 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3551 | else | |
3552 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3553 | ||
3554 | return res; | |
c906108c SS |
3555 | } |
3556 | ||
c5aa993b | 3557 | |
c906108c SS |
3558 | #if 0 |
3559 | /* Enable after 4.12. */ | |
3560 | ||
3561 | void | |
c338868a KB |
3562 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3563 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3564 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3565 | { |
3566 | if (increment == -4 && len == 4) | |
3567 | { | |
3568 | long mask_long, data_long; | |
3569 | long data_found_long; | |
3570 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3571 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3572 | long returned_long[2]; |
3573 | char *p; | |
3574 | ||
3575 | mask_long = extract_unsigned_integer (mask, len); | |
3576 | data_long = extract_unsigned_integer (data, len); | |
3577 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3578 | putpkt (buf); | |
c2d11a7d | 3579 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3580 | if (buf[0] == '\0') |
3581 | { | |
3582 | /* The stub doesn't support the 't' request. We might want to | |
3583 | remember this fact, but on the other hand the stub could be | |
3584 | switched on us. Maybe we should remember it only until | |
3585 | the next "target remote". */ | |
3586 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3587 | hirange, addr_found, data_found); | |
3588 | return; | |
3589 | } | |
3590 | ||
3591 | if (buf[0] == 'E') | |
3592 | /* There is no correspondance between what the remote protocol uses | |
3593 | for errors and errno codes. We would like a cleaner way of | |
3594 | representing errors (big enough to include errno codes, bfd_error | |
3595 | codes, and others). But for now just use EIO. */ | |
3596 | memory_error (EIO, startaddr); | |
3597 | p = buf; | |
3598 | addr_we_found = 0; | |
3599 | while (*p != '\0' && *p != ',') | |
3600 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3601 | if (*p == '\0') | |
3602 | error ("Protocol error: short return for search"); | |
3603 | ||
3604 | data_found_long = 0; | |
3605 | while (*p != '\0' && *p != ',') | |
3606 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3607 | /* Ignore anything after this comma, for future extensions. */ | |
3608 | ||
3609 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3610 | { | |
3611 | *addr_found = 0; | |
3612 | return; | |
3613 | } | |
3614 | ||
3615 | *addr_found = addr_we_found; | |
3616 | *data_found = store_unsigned_integer (data_we_found, len); | |
3617 | return; | |
3618 | } | |
3619 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3620 | hirange, addr_found, data_found); | |
3621 | } | |
3622 | #endif /* 0 */ | |
3623 | \f | |
3624 | static void | |
fba45db2 | 3625 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3626 | { |
3627 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3628 | } | |
3629 | \f | |
3630 | /* Stuff for dealing with the packets which are part of this protocol. | |
3631 | See comment at top of file for details. */ | |
3632 | ||
3633 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3634 | ||
3635 | static int | |
fba45db2 | 3636 | readchar (int timeout) |
c906108c SS |
3637 | { |
3638 | int ch; | |
3639 | ||
3640 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3641 | ||
2acceee2 JM |
3642 | if (ch >= 0) |
3643 | return (ch & 0x7f); | |
3644 | ||
3645 | switch ((enum serial_rc) ch) | |
c906108c SS |
3646 | { |
3647 | case SERIAL_EOF: | |
2acceee2 | 3648 | target_mourn_inferior (); |
c906108c | 3649 | error ("Remote connection closed"); |
2acceee2 | 3650 | /* no return */ |
c906108c SS |
3651 | case SERIAL_ERROR: |
3652 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3653 | /* no return */ |
c906108c | 3654 | case SERIAL_TIMEOUT: |
2acceee2 | 3655 | break; |
c906108c | 3656 | } |
2acceee2 | 3657 | return ch; |
c906108c SS |
3658 | } |
3659 | ||
3660 | /* Send the command in BUF to the remote machine, and read the reply | |
3661 | into BUF. Report an error if we get an error reply. */ | |
3662 | ||
3663 | static void | |
c2d11a7d JM |
3664 | remote_send (char *buf, |
3665 | long sizeof_buf) | |
c906108c SS |
3666 | { |
3667 | putpkt (buf); | |
c2d11a7d | 3668 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3669 | |
3670 | if (buf[0] == 'E') | |
3671 | error ("Remote failure reply: %s", buf); | |
3672 | } | |
3673 | ||
3674 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3675 | string notation. */ | |
3676 | ||
3677 | static void | |
fba45db2 | 3678 | print_packet (char *buf) |
c906108c SS |
3679 | { |
3680 | puts_filtered ("\""); | |
43e526b9 | 3681 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3682 | puts_filtered ("\""); |
3683 | } | |
3684 | ||
3685 | int | |
fba45db2 | 3686 | putpkt (char *buf) |
c906108c SS |
3687 | { |
3688 | return putpkt_binary (buf, strlen (buf)); | |
3689 | } | |
3690 | ||
3691 | /* Send a packet to the remote machine, with error checking. The data | |
3692 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3693 | to account for the $, # and checksum, and for a possible /0 if we are | |
3694 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3695 | ||
3696 | static int | |
fba45db2 | 3697 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3698 | { |
3699 | int i; | |
3700 | unsigned char csum = 0; | |
11cf8741 | 3701 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3702 | long sizeof_junkbuf = PBUFSIZ; |
3703 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3704 | |
c906108c SS |
3705 | int ch; |
3706 | int tcount = 0; | |
3707 | char *p; | |
3708 | ||
3709 | /* Copy the packet into buffer BUF2, encapsulating it | |
3710 | and giving it a checksum. */ | |
3711 | ||
c906108c SS |
3712 | p = buf2; |
3713 | *p++ = '$'; | |
3714 | ||
3715 | for (i = 0; i < cnt; i++) | |
3716 | { | |
3717 | csum += buf[i]; | |
3718 | *p++ = buf[i]; | |
3719 | } | |
3720 | *p++ = '#'; | |
3721 | *p++ = tohex ((csum >> 4) & 0xf); | |
3722 | *p++ = tohex (csum & 0xf); | |
3723 | ||
3724 | /* Send it over and over until we get a positive ack. */ | |
3725 | ||
3726 | while (1) | |
3727 | { | |
3728 | int started_error_output = 0; | |
3729 | ||
3730 | if (remote_debug) | |
3731 | { | |
3732 | *p = '\0'; | |
43e526b9 JM |
3733 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3734 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3735 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3736 | gdb_flush (gdb_stdlog); |
c906108c SS |
3737 | } |
3738 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3739 | perror_with_name ("putpkt: write failed"); | |
3740 | ||
3741 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3742 | while (1) | |
3743 | { | |
3744 | ch = readchar (remote_timeout); | |
3745 | ||
c5aa993b | 3746 | if (remote_debug) |
c906108c SS |
3747 | { |
3748 | switch (ch) | |
3749 | { | |
3750 | case '+': | |
1216fa2c | 3751 | case '-': |
c906108c SS |
3752 | case SERIAL_TIMEOUT: |
3753 | case '$': | |
3754 | if (started_error_output) | |
3755 | { | |
3756 | putchar_unfiltered ('\n'); | |
3757 | started_error_output = 0; | |
3758 | } | |
3759 | } | |
3760 | } | |
3761 | ||
3762 | switch (ch) | |
3763 | { | |
3764 | case '+': | |
3765 | if (remote_debug) | |
0f71a2f6 | 3766 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3767 | return 1; |
1216fa2c AC |
3768 | case '-': |
3769 | if (remote_debug) | |
3770 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3771 | case SERIAL_TIMEOUT: |
c5aa993b | 3772 | tcount++; |
c906108c SS |
3773 | if (tcount > 3) |
3774 | return 0; | |
3775 | break; /* Retransmit buffer */ | |
3776 | case '$': | |
3777 | { | |
40e3f985 FN |
3778 | if (remote_debug) |
3779 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3780 | /* It's probably an old response, and we're out of sync. |
3781 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3782 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3783 | continue; /* Now, go look for + */ |
c906108c SS |
3784 | } |
3785 | default: | |
3786 | if (remote_debug) | |
3787 | { | |
3788 | if (!started_error_output) | |
3789 | { | |
3790 | started_error_output = 1; | |
0f71a2f6 | 3791 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3792 | } |
0f71a2f6 | 3793 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3794 | } |
3795 | continue; | |
3796 | } | |
3797 | break; /* Here to retransmit */ | |
3798 | } | |
3799 | ||
3800 | #if 0 | |
3801 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3802 | able to get out next time we call QUIT, without anything as |
3803 | violent as interrupt_query. If we want to provide a way out of | |
3804 | here without getting to the next QUIT, it should be based on | |
3805 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3806 | if (quit_flag) |
3807 | { | |
3808 | quit_flag = 0; | |
3809 | interrupt_query (); | |
3810 | } | |
3811 | #endif | |
3812 | } | |
3813 | } | |
3814 | ||
0f71a2f6 JM |
3815 | static int remote_cisco_mode; |
3816 | ||
c906108c SS |
3817 | /* Come here after finding the start of the frame. Collect the rest |
3818 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3819 | compression. No more than sizeof_buf-1 characters are read so that |
3820 | the buffer can be NUL terminated. | |
c906108c | 3821 | |
c2d11a7d JM |
3822 | Returns -1 on error, number of characters in buffer (ignoring the |
3823 | trailing NULL) on success. (could be extended to return one of the | |
3824 | SERIAL status indications). */ | |
3825 | ||
3826 | static long | |
3827 | read_frame (char *buf, | |
3828 | long sizeof_buf) | |
c906108c SS |
3829 | { |
3830 | unsigned char csum; | |
c2d11a7d | 3831 | long bc; |
c906108c SS |
3832 | int c; |
3833 | ||
3834 | csum = 0; | |
c2d11a7d | 3835 | bc = 0; |
c906108c SS |
3836 | |
3837 | while (1) | |
3838 | { | |
c2d11a7d | 3839 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 3840 | c = readchar (remote_timeout); |
c906108c SS |
3841 | switch (c) |
3842 | { | |
3843 | case SERIAL_TIMEOUT: | |
3844 | if (remote_debug) | |
0f71a2f6 | 3845 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3846 | return -1; |
c906108c SS |
3847 | case '$': |
3848 | if (remote_debug) | |
0f71a2f6 JM |
3849 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3850 | gdb_stdlog); | |
c2d11a7d | 3851 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
3852 | case '#': |
3853 | { | |
3854 | unsigned char pktcsum; | |
e1b09194 AC |
3855 | int check_0 = 0; |
3856 | int check_1 = 0; | |
c906108c | 3857 | |
c2d11a7d | 3858 | buf[bc] = '\0'; |
c906108c | 3859 | |
e1b09194 AC |
3860 | check_0 = readchar (remote_timeout); |
3861 | if (check_0 >= 0) | |
3862 | check_1 = readchar (remote_timeout); | |
3863 | ||
3864 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
3865 | { | |
3866 | if (remote_debug) | |
3867 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
3868 | return -1; | |
3869 | } | |
3870 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3871 | { |
3872 | if (remote_debug) | |
3873 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
3874 | return -1; | |
3875 | } | |
c906108c | 3876 | |
e1b09194 | 3877 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 3878 | if (csum == pktcsum) |
c2d11a7d | 3879 | return bc; |
c906108c | 3880 | |
c5aa993b | 3881 | if (remote_debug) |
c906108c | 3882 | { |
0f71a2f6 | 3883 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3884 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3885 | pktcsum, csum); |
3886 | fputs_filtered (buf, gdb_stdlog); | |
3887 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3888 | } |
c2d11a7d JM |
3889 | /* Number of characters in buffer ignoring trailing |
3890 | NUL. */ | |
3891 | return -1; | |
c906108c SS |
3892 | } |
3893 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
3894 | { |
3895 | int repeat; | |
3896 | csum += c; | |
c906108c | 3897 | |
c2c6d25f JM |
3898 | if (remote_cisco_mode == 0) |
3899 | { | |
3900 | c = readchar (remote_timeout); | |
3901 | csum += c; | |
3902 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
3903 | } | |
3904 | else | |
3905 | { | |
3906 | /* Cisco's run-length encoding variant uses two | |
3907 | hex chars to represent the repeat count. */ | |
3908 | ||
3909 | c = readchar (remote_timeout); | |
3910 | csum += c; | |
3911 | repeat = fromhex (c) << 4; | |
3912 | c = readchar (remote_timeout); | |
3913 | csum += c; | |
3914 | repeat += fromhex (c); | |
3915 | } | |
c906108c | 3916 | |
c2d11a7d JM |
3917 | /* The character before ``*'' is repeated. */ |
3918 | ||
c2c6d25f | 3919 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
3920 | && bc > 0 |
3921 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 3922 | { |
c2d11a7d JM |
3923 | memset (&buf[bc], buf[bc - 1], repeat); |
3924 | bc += repeat; | |
c2c6d25f JM |
3925 | continue; |
3926 | } | |
3927 | ||
c2d11a7d | 3928 | buf[bc] = '\0'; |
c2c6d25f JM |
3929 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
3930 | puts_filtered (buf); | |
3931 | puts_filtered ("\n"); | |
c2d11a7d | 3932 | return -1; |
c2c6d25f | 3933 | } |
c906108c | 3934 | default: |
c2d11a7d | 3935 | if (bc < sizeof_buf - 1) |
c906108c | 3936 | { |
c2d11a7d | 3937 | buf[bc++] = c; |
c906108c SS |
3938 | csum += c; |
3939 | continue; | |
3940 | } | |
3941 | ||
c2d11a7d | 3942 | buf[bc] = '\0'; |
c906108c SS |
3943 | puts_filtered ("Remote packet too long: "); |
3944 | puts_filtered (buf); | |
3945 | puts_filtered ("\n"); | |
3946 | ||
c2d11a7d | 3947 | return -1; |
c906108c SS |
3948 | } |
3949 | } | |
3950 | } | |
3951 | ||
3952 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
3953 | store it in BUF. If FOREVER, wait forever rather than timing out; |
3954 | this is used (in synchronous mode) to wait for a target that is is | |
3955 | executing user code to stop. */ | |
d9fcf2fb JM |
3956 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
3957 | don't have to change all the calls to getpkt to deal with the | |
3958 | return value, because at the moment I don't know what the right | |
3959 | thing to do it for those. */ | |
c906108c | 3960 | void |
c2d11a7d JM |
3961 | getpkt (char *buf, |
3962 | long sizeof_buf, | |
3963 | int forever) | |
d9fcf2fb JM |
3964 | { |
3965 | int timed_out; | |
3966 | ||
3967 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
3968 | } | |
3969 | ||
3970 | ||
3971 | /* Read a packet from the remote machine, with error checking, and | |
3972 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
3973 | this is used (in synchronous mode) to wait for a target that is is | |
3974 | executing user code to stop. If FOREVER == 0, this function is | |
3975 | allowed to time out gracefully and return an indication of this to | |
3976 | the caller. */ | |
3977 | int | |
3978 | getpkt_sane (char *buf, | |
3979 | long sizeof_buf, | |
3980 | int forever) | |
c906108c SS |
3981 | { |
3982 | int c; | |
3983 | int tries; | |
3984 | int timeout; | |
3985 | int val; | |
3986 | ||
c5aa993b | 3987 | strcpy (buf, "timeout"); |
c906108c SS |
3988 | |
3989 | if (forever) | |
3990 | { | |
c906108c | 3991 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
3992 | } |
3993 | ||
3994 | else | |
3995 | timeout = remote_timeout; | |
3996 | ||
3997 | #define MAX_TRIES 3 | |
3998 | ||
3999 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4000 | { | |
4001 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4002 | continuously, but if it pauses, we'll get a zero from readchar |
4003 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4004 | |
4005 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4006 | After that, we expect characters to arrive at a brisk pace. They |
4007 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4008 | |
4009 | do | |
4010 | { | |
4011 | c = readchar (timeout); | |
4012 | ||
4013 | if (c == SERIAL_TIMEOUT) | |
4014 | { | |
2acceee2 | 4015 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4016 | { |
2acceee2 | 4017 | QUIT; |
c906108c SS |
4018 | target_mourn_inferior (); |
4019 | error ("Watchdog has expired. Target detached.\n"); | |
4020 | } | |
c906108c | 4021 | if (remote_debug) |
0f71a2f6 | 4022 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4023 | goto retry; |
4024 | } | |
4025 | } | |
4026 | while (c != '$'); | |
4027 | ||
4028 | /* We've found the start of a packet, now collect the data. */ | |
4029 | ||
c2d11a7d | 4030 | val = read_frame (buf, sizeof_buf); |
c906108c | 4031 | |
c2d11a7d | 4032 | if (val >= 0) |
c906108c SS |
4033 | { |
4034 | if (remote_debug) | |
43e526b9 JM |
4035 | { |
4036 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4037 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4038 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4039 | } | |
c906108c | 4040 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 4041 | return 0; |
c906108c SS |
4042 | } |
4043 | ||
4044 | /* Try the whole thing again. */ | |
4045 | retry: | |
4046 | SERIAL_WRITE (remote_desc, "-", 1); | |
4047 | } | |
4048 | ||
4049 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4050 | ||
4051 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4052 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4053 | return 1; |
c906108c SS |
4054 | } |
4055 | \f | |
4056 | static void | |
fba45db2 | 4057 | remote_kill (void) |
c906108c SS |
4058 | { |
4059 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4060 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4061 | if (kill_kludge) | |
4062 | { | |
4063 | kill_kludge = 0; | |
4064 | target_mourn_inferior (); | |
4065 | return; | |
4066 | } | |
4067 | ||
4068 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4069 | speaking terms with the remote system. */ | |
c5aa993b | 4070 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4071 | |
4072 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4073 | we do or not. For the existing stubs, kill is a noop. */ | |
4074 | target_mourn_inferior (); | |
4075 | } | |
4076 | ||
43ff13b4 JM |
4077 | /* Async version of remote_kill. */ |
4078 | static void | |
fba45db2 | 4079 | remote_async_kill (void) |
43ff13b4 JM |
4080 | { |
4081 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4082 | if (target_is_async_p ()) |
c2c6d25f | 4083 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4084 | |
4085 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4086 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4087 | if (kill_kludge) | |
4088 | { | |
4089 | kill_kludge = 0; | |
4090 | target_mourn_inferior (); | |
4091 | return; | |
4092 | } | |
4093 | ||
4094 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4095 | speaking terms with the remote system. */ | |
c5aa993b | 4096 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4097 | |
4098 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4099 | we do or not. For the existing stubs, kill is a noop. */ | |
4100 | target_mourn_inferior (); | |
4101 | } | |
4102 | ||
c906108c | 4103 | static void |
fba45db2 | 4104 | remote_mourn (void) |
c906108c SS |
4105 | { |
4106 | remote_mourn_1 (&remote_ops); | |
4107 | } | |
4108 | ||
53a5351d | 4109 | static void |
fba45db2 | 4110 | remote_async_mourn (void) |
53a5351d JM |
4111 | { |
4112 | remote_mourn_1 (&remote_async_ops); | |
4113 | } | |
4114 | ||
c906108c | 4115 | static void |
fba45db2 | 4116 | extended_remote_mourn (void) |
c906108c SS |
4117 | { |
4118 | /* We do _not_ want to mourn the target like this; this will | |
4119 | remove the extended remote target from the target stack, | |
4120 | and the next time the user says "run" it'll fail. | |
4121 | ||
4122 | FIXME: What is the right thing to do here? */ | |
4123 | #if 0 | |
4124 | remote_mourn_1 (&extended_remote_ops); | |
4125 | #endif | |
4126 | } | |
4127 | ||
4128 | /* Worker function for remote_mourn. */ | |
4129 | static void | |
fba45db2 | 4130 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4131 | { |
4132 | unpush_target (target); | |
4133 | generic_mourn_inferior (); | |
4134 | } | |
4135 | ||
4136 | /* In the extended protocol we want to be able to do things like | |
4137 | "run" and have them basically work as expected. So we need | |
4138 | a special create_inferior function. | |
4139 | ||
4140 | FIXME: One day add support for changing the exec file | |
4141 | we're debugging, arguments and an environment. */ | |
4142 | ||
4143 | static void | |
fba45db2 | 4144 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4145 | { |
4146 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4147 | the remote server. */ | |
4148 | remove_breakpoints (); | |
4149 | ||
4150 | /* Now restart the remote server. */ | |
4151 | extended_remote_restart (); | |
4152 | ||
4153 | /* Now put the breakpoints back in. This way we're safe if the | |
4154 | restart function works via a unix fork on the remote side. */ | |
4155 | insert_breakpoints (); | |
4156 | ||
4157 | /* Clean up from the last time we were running. */ | |
4158 | clear_proceed_status (); | |
4159 | ||
4160 | /* Let the remote process run. */ | |
4161 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4162 | } | |
4163 | ||
43ff13b4 JM |
4164 | /* Async version of extended_remote_create_inferior. */ |
4165 | static void | |
fba45db2 | 4166 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4167 | { |
4168 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4169 | the remote server. */ | |
4170 | remove_breakpoints (); | |
4171 | ||
4172 | /* If running asynchronously, register the target file descriptor | |
4173 | with the event loop. */ | |
2acceee2 JM |
4174 | if (event_loop_p && target_can_async_p ()) |
4175 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4176 | |
4177 | /* Now restart the remote server. */ | |
4178 | extended_remote_restart (); | |
4179 | ||
4180 | /* Now put the breakpoints back in. This way we're safe if the | |
4181 | restart function works via a unix fork on the remote side. */ | |
4182 | insert_breakpoints (); | |
4183 | ||
4184 | /* Clean up from the last time we were running. */ | |
4185 | clear_proceed_status (); | |
4186 | ||
4187 | /* Let the remote process run. */ | |
4188 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4189 | } | |
c906108c | 4190 | \f |
c5aa993b | 4191 | |
c906108c SS |
4192 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4193 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4194 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4195 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4196 | the standard routines that are in mem-break.c. */ | |
4197 | ||
4198 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4199 | the choice of breakpoint instruction affects target program design and | |
4200 | vice versa, and by making it user-tweakable, the special code here | |
4201 | goes away and we need fewer special GDB configurations. */ | |
4202 | ||
4203 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4204 | #define REMOTE_BREAKPOINT | |
4205 | #endif | |
4206 | ||
4207 | #ifdef REMOTE_BREAKPOINT | |
4208 | ||
4209 | /* If the target isn't bi-endian, just pretend it is. */ | |
4210 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4211 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4212 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4213 | #endif | |
4214 | ||
4215 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4216 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4217 | ||
4218 | #endif /* REMOTE_BREAKPOINT */ | |
4219 | ||
4220 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4221 | support. We read the contents of the target location and stash it, | |
4222 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4223 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4224 | memory allocated for saving the target contents. It is guaranteed | |
4225 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4226 | is accomplished via BREAKPOINT_MAX). */ | |
4227 | ||
4228 | static int | |
fba45db2 | 4229 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
4230 | { |
4231 | #ifdef REMOTE_BREAKPOINT | |
4232 | int val; | |
96baa820 JM |
4233 | #endif |
4234 | int bp_size; | |
4235 | ||
d471ea57 AC |
4236 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4237 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4238 | fails, and the user has explicitly requested the Z support then | |
4239 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4240 | |
d471ea57 | 4241 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4242 | { |
e514a9d6 JM |
4243 | char *buf = alloca (PBUFSIZ); |
4244 | char *p = buf; | |
96baa820 JM |
4245 | |
4246 | addr = remote_address_masked (addr); | |
4247 | *(p++) = 'Z'; | |
4248 | *(p++) = '0'; | |
4249 | *(p++) = ','; | |
4250 | p += hexnumstr (p, (ULONGEST) addr); | |
4251 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4252 | sprintf (p, ",%d", bp_size); | |
4253 | ||
4254 | putpkt (buf); | |
c2d11a7d | 4255 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4256 | |
d471ea57 | 4257 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4258 | { |
d471ea57 AC |
4259 | case PACKET_ERROR: |
4260 | return -1; | |
4261 | case PACKET_OK: | |
4262 | return 0; | |
4263 | case PACKET_UNKNOWN: | |
4264 | break; | |
96baa820 JM |
4265 | } |
4266 | } | |
c906108c | 4267 | |
96baa820 | 4268 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4269 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4270 | ||
4271 | if (val == 0) | |
4272 | { | |
4273 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4274 | val = target_write_memory (addr, (char *) big_break_insn, | |
4275 | sizeof big_break_insn); | |
4276 | else | |
4277 | val = target_write_memory (addr, (char *) little_break_insn, | |
4278 | sizeof little_break_insn); | |
4279 | } | |
4280 | ||
4281 | return val; | |
4282 | #else | |
4283 | return memory_insert_breakpoint (addr, contents_cache); | |
4284 | #endif /* REMOTE_BREAKPOINT */ | |
4285 | } | |
4286 | ||
4287 | static int | |
fba45db2 | 4288 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4289 | { |
96baa820 JM |
4290 | int bp_size; |
4291 | ||
d471ea57 | 4292 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4293 | { |
e514a9d6 JM |
4294 | char *buf = alloca (PBUFSIZ); |
4295 | char *p = buf; | |
96baa820 JM |
4296 | |
4297 | *(p++) = 'z'; | |
4298 | *(p++) = '0'; | |
4299 | *(p++) = ','; | |
4300 | ||
4301 | addr = remote_address_masked (addr); | |
4302 | p += hexnumstr (p, (ULONGEST) addr); | |
4303 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4304 | sprintf (p, ",%d", bp_size); | |
4305 | ||
4306 | putpkt (buf); | |
c2d11a7d | 4307 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4308 | |
4309 | return (buf[0] == 'E'); | |
4310 | } | |
4311 | ||
c906108c SS |
4312 | #ifdef REMOTE_BREAKPOINT |
4313 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4314 | #else | |
4315 | return memory_remove_breakpoint (addr, contents_cache); | |
4316 | #endif /* REMOTE_BREAKPOINT */ | |
4317 | } | |
4318 | ||
d471ea57 AC |
4319 | static int |
4320 | watchpoint_to_Z_packet (int type) | |
4321 | { | |
4322 | switch (type) | |
4323 | { | |
4324 | case hw_write: | |
4325 | return 2; | |
4326 | break; | |
4327 | case hw_read: | |
4328 | return 3; | |
4329 | break; | |
4330 | case hw_access: | |
4331 | return 4; | |
4332 | break; | |
4333 | default: | |
4334 | internal_error ("hw_bp_to_z: bad watchpoint type %d", type); | |
4335 | } | |
4336 | } | |
4337 | ||
4338 | /* FIXME: This function should be static and a member of the remote | |
4339 | target vector. */ | |
4340 | ||
96baa820 | 4341 | int |
fba45db2 | 4342 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4343 | { |
e514a9d6 JM |
4344 | char *buf = alloca (PBUFSIZ); |
4345 | char *p; | |
d471ea57 | 4346 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4347 | |
d471ea57 AC |
4348 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4349 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4350 | remote_protocol_Z[packet].name, | |
4351 | remote_protocol_Z[packet].title); | |
96baa820 | 4352 | |
d471ea57 | 4353 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4354 | p = strchr (buf, '\0'); |
4355 | addr = remote_address_masked (addr); | |
4356 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4357 | sprintf (p, ",%x", len); |
96baa820 JM |
4358 | |
4359 | putpkt (buf); | |
c2d11a7d | 4360 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4361 | |
d471ea57 AC |
4362 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4363 | { | |
4364 | case PACKET_ERROR: | |
4365 | case PACKET_UNKNOWN: | |
4366 | return -1; | |
4367 | case PACKET_OK: | |
4368 | return 0; | |
4369 | } | |
4370 | internal_error ("remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4371 | } |
4372 | ||
d471ea57 AC |
4373 | /* FIXME: This function should be static and a member of the remote |
4374 | target vector. */ | |
4375 | ||
96baa820 | 4376 | int |
fba45db2 | 4377 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4378 | { |
e514a9d6 JM |
4379 | char *buf = alloca (PBUFSIZ); |
4380 | char *p; | |
d471ea57 AC |
4381 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4382 | ||
4383 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4384 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4385 | remote_protocol_Z[packet].name, | |
4386 | remote_protocol_Z[packet].title); | |
96baa820 | 4387 | |
d471ea57 | 4388 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4389 | p = strchr (buf, '\0'); |
4390 | addr = remote_address_masked (addr); | |
4391 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4392 | sprintf (p, ",%x", len); |
96baa820 | 4393 | putpkt (buf); |
c2d11a7d | 4394 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4395 | |
d471ea57 AC |
4396 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4397 | { | |
4398 | case PACKET_ERROR: | |
4399 | case PACKET_UNKNOWN: | |
4400 | return -1; | |
4401 | case PACKET_OK: | |
4402 | return 0; | |
4403 | } | |
4404 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4405 | } |
4406 | ||
d471ea57 AC |
4407 | /* FIXME: This function should be static and a member of the remote |
4408 | target vector. */ | |
4409 | ||
96baa820 | 4410 | int |
fba45db2 | 4411 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4412 | { |
e514a9d6 JM |
4413 | char *buf = alloca (PBUFSIZ); |
4414 | char *p = buf; | |
96baa820 | 4415 | |
d471ea57 AC |
4416 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4417 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4418 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4419 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4420 | ||
96baa820 JM |
4421 | *(p++) = 'Z'; |
4422 | *(p++) = '1'; | |
4423 | *(p++) = ','; | |
4424 | ||
4425 | addr = remote_address_masked (addr); | |
4426 | p += hexnumstr (p, (ULONGEST) addr); | |
4427 | *p = '\0'; | |
4428 | ||
4429 | putpkt (buf); | |
c2d11a7d | 4430 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4431 | |
d471ea57 AC |
4432 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4433 | { | |
4434 | case PACKET_ERROR: | |
4435 | case PACKET_UNKNOWN: | |
4436 | return -1; | |
4437 | case PACKET_OK: | |
4438 | return 0; | |
4439 | } | |
4440 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4441 | } |
4442 | ||
d471ea57 AC |
4443 | /* FIXME: This function should be static and a member of the remote |
4444 | target vector. */ | |
4445 | ||
96baa820 | 4446 | int |
fba45db2 | 4447 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4448 | { |
e514a9d6 JM |
4449 | char *buf = alloca (PBUFSIZ); |
4450 | char *p = buf; | |
96baa820 | 4451 | |
d471ea57 AC |
4452 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4453 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4454 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4455 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4456 | ||
96baa820 JM |
4457 | *(p++) = 'z'; |
4458 | *(p++) = '1'; | |
4459 | *(p++) = ','; | |
4460 | ||
4461 | addr = remote_address_masked (addr); | |
4462 | p += hexnumstr (p, (ULONGEST) addr); | |
4463 | *p = '\0'; | |
4464 | ||
4465 | putpkt(buf); | |
c2d11a7d | 4466 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4467 | |
d471ea57 AC |
4468 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4469 | { | |
4470 | case PACKET_ERROR: | |
4471 | case PACKET_UNKNOWN: | |
4472 | return -1; | |
4473 | case PACKET_OK: | |
4474 | return 0; | |
4475 | } | |
4476 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4477 | } |
96baa820 | 4478 | |
c906108c SS |
4479 | /* Some targets are only capable of doing downloads, and afterwards |
4480 | they switch to the remote serial protocol. This function provides | |
4481 | a clean way to get from the download target to the remote target. | |
4482 | It's basically just a wrapper so that we don't have to expose any | |
4483 | of the internal workings of remote.c. | |
4484 | ||
4485 | Prior to calling this routine, you should shutdown the current | |
4486 | target code, else you will get the "A program is being debugged | |
4487 | already..." message. Usually a call to pop_target() suffices. */ | |
4488 | ||
4489 | void | |
fba45db2 | 4490 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4491 | { |
4492 | printf_filtered ("Switching to remote protocol\n"); | |
4493 | remote_open (name, from_tty); | |
4494 | } | |
4495 | ||
4496 | /* Other targets want to use the entire remote serial module but with | |
4497 | certain remote_ops overridden. */ | |
4498 | ||
4499 | void | |
fba45db2 KB |
4500 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4501 | int extended_p) | |
c906108c SS |
4502 | { |
4503 | printf_filtered ("Selecting the %sremote protocol\n", | |
4504 | (extended_p ? "extended-" : "")); | |
4505 | remote_open_1 (name, from_tty, target, extended_p); | |
4506 | } | |
4507 | ||
4508 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4509 | ||
c5aa993b JM |
4510 | static unsigned long crc32_table[256] = |
4511 | {0, 0}; | |
c906108c SS |
4512 | |
4513 | static unsigned long | |
fba45db2 | 4514 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4515 | { |
c5aa993b | 4516 | if (!crc32_table[1]) |
c906108c SS |
4517 | { |
4518 | /* Initialize the CRC table and the decoding table. */ | |
4519 | int i, j; | |
4520 | unsigned int c; | |
4521 | ||
4522 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4523 | { |
4524 | for (c = i << 24, j = 8; j > 0; --j) | |
4525 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4526 | crc32_table[i] = c; | |
4527 | } | |
c906108c SS |
4528 | } |
4529 | ||
4530 | while (len--) | |
4531 | { | |
4532 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4533 | buf++; | |
4534 | } | |
4535 | return crc; | |
4536 | } | |
4537 | ||
4538 | /* compare-sections command | |
4539 | ||
4540 | With no arguments, compares each loadable section in the exec bfd | |
4541 | with the same memory range on the target, and reports mismatches. | |
4542 | Useful for verifying the image on the target against the exec file. | |
4543 | Depends on the target understanding the new "qCRC:" request. */ | |
4544 | ||
e514a9d6 JM |
4545 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4546 | target method (target verify memory) and generic version of the | |
4547 | actual command. This will allow other high-level code (especially | |
4548 | generic_load()) to make use of this target functionality. */ | |
4549 | ||
c906108c | 4550 | static void |
fba45db2 | 4551 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
4552 | { |
4553 | asection *s; | |
4554 | unsigned long host_crc, target_crc; | |
4555 | extern bfd *exec_bfd; | |
4556 | struct cleanup *old_chain; | |
085dd6e6 JM |
4557 | char *tmp; |
4558 | char *sectdata; | |
4559 | char *sectname; | |
4560 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4561 | bfd_size_type size; |
4562 | bfd_vma lma; | |
4563 | int matched = 0; | |
4564 | int mismatched = 0; | |
4565 | ||
4566 | if (!exec_bfd) | |
4567 | error ("command cannot be used without an exec file"); | |
4568 | if (!current_target.to_shortname || | |
4569 | strcmp (current_target.to_shortname, "remote") != 0) | |
4570 | error ("command can only be used with remote target"); | |
4571 | ||
c5aa993b | 4572 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4573 | { |
4574 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4575 | continue; /* skip non-loadable section */ |
c906108c SS |
4576 | |
4577 | size = bfd_get_section_size_before_reloc (s); | |
4578 | if (size == 0) | |
c5aa993b | 4579 | continue; /* skip zero-length section */ |
c906108c SS |
4580 | |
4581 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4582 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4583 | continue; /* not the section selected by user */ |
c906108c | 4584 | |
c5aa993b | 4585 | matched = 1; /* do this section */ |
c906108c SS |
4586 | lma = s->lma; |
4587 | /* FIXME: assumes lma can fit into long */ | |
4588 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4589 | putpkt (buf); | |
4590 | ||
4591 | /* be clever; compute the host_crc before waiting for target reply */ | |
4592 | sectdata = xmalloc (size); | |
4593 | old_chain = make_cleanup (free, sectdata); | |
4594 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |
4595 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4596 | ||
c2d11a7d | 4597 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4598 | if (buf[0] == 'E') |
4599 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4600 | sectname, lma, lma + size); | |
4601 | if (buf[0] != 'C') | |
4602 | error ("remote target does not support this operation"); | |
4603 | ||
4604 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4605 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4606 | ||
d4f3574e SS |
4607 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4608 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4609 | if (host_crc == target_crc) |
4610 | printf_filtered ("matched.\n"); | |
4611 | else | |
c5aa993b JM |
4612 | { |
4613 | printf_filtered ("MIS-MATCHED!\n"); | |
4614 | mismatched++; | |
4615 | } | |
c906108c SS |
4616 | |
4617 | do_cleanups (old_chain); | |
4618 | } | |
4619 | if (mismatched > 0) | |
4620 | warning ("One or more sections of the remote executable does not match\n\ | |
4621 | the loaded file\n"); | |
4622 | if (args && !matched) | |
4623 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4624 | } | |
4625 | ||
4626 | static int | |
fba45db2 | 4627 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c SS |
4628 | { |
4629 | int i; | |
085dd6e6 | 4630 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4631 | char *p2 = &buf2[0]; |
c906108c | 4632 | |
c5aa993b | 4633 | if (!bufsiz) |
c906108c SS |
4634 | error ("null pointer to remote bufer size specified"); |
4635 | ||
cce74817 | 4636 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4637 | the caller know and return what the minimum size is */ |
4638 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4639 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4640 | { |
4641 | *bufsiz = PBUFSIZ; | |
4642 | return -1; | |
4643 | } | |
4644 | ||
4645 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4646 | if (!remote_desc) |
c906108c SS |
4647 | error ("remote query is only available after target open"); |
4648 | ||
4649 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4650 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4651 | error ("invalid remote query type"); |
4652 | ||
c5aa993b | 4653 | if (!buf) |
c906108c SS |
4654 | error ("null remote query specified"); |
4655 | ||
c5aa993b | 4656 | if (!outbuf) |
c906108c SS |
4657 | error ("remote query requires a buffer to receive data"); |
4658 | ||
4659 | outbuf[0] = '\0'; | |
4660 | ||
4661 | *p2++ = 'q'; | |
4662 | *p2++ = query_type; | |
4663 | ||
4664 | /* we used one buffer char for the remote protocol q command and another | |
4665 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4666 | plus one extra in case we are debugging (remote_debug), | |
4667 | we have PBUFZIZ - 7 left to pack the query string */ | |
4668 | i = 0; | |
c5aa993b | 4669 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4670 | { |
4671 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4672 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4673 | error ("illegal characters in query string"); | |
c906108c SS |
4674 | |
4675 | *p2++ = buf[i]; | |
4676 | i++; | |
4677 | } | |
4678 | *p2 = buf[i]; | |
4679 | ||
c5aa993b | 4680 | if (buf[i]) |
c906108c SS |
4681 | error ("query larger than available buffer"); |
4682 | ||
4683 | i = putpkt (buf2); | |
c5aa993b JM |
4684 | if (i < 0) |
4685 | return i; | |
c906108c | 4686 | |
c2d11a7d | 4687 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4688 | |
4689 | return 0; | |
4690 | } | |
4691 | ||
96baa820 JM |
4692 | static void |
4693 | remote_rcmd (char *command, | |
d9fcf2fb | 4694 | struct ui_file *outbuf) |
96baa820 JM |
4695 | { |
4696 | int i; | |
4697 | char *buf = alloca (PBUFSIZ); | |
4698 | char *p = buf; | |
4699 | ||
4700 | if (!remote_desc) | |
4701 | error ("remote rcmd is only available after target open"); | |
4702 | ||
7be570e7 JM |
4703 | /* Send a NULL command across as an empty command */ |
4704 | if (command == NULL) | |
4705 | command = ""; | |
4706 | ||
96baa820 JM |
4707 | /* The query prefix */ |
4708 | strcpy (buf, "qRcmd,"); | |
4709 | p = strchr (buf, '\0'); | |
4710 | ||
4711 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4712 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4713 | ||
4714 | /* Encode the actual command */ | |
4715 | for (i = 0; command[i]; i++) | |
4716 | { | |
4717 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4718 | *p++ = tohex (command[i] & 0xf); | |
4719 | } | |
4720 | *p = '\0'; | |
4721 | ||
4722 | if (putpkt (buf) < 0) | |
4723 | error ("Communication problem with target\n"); | |
4724 | ||
4725 | /* get/display the response */ | |
4726 | while (1) | |
4727 | { | |
4728 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4729 | buf[0] = '\0'; | |
c2d11a7d | 4730 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4731 | if (buf[0] == '\0') |
4732 | error ("Target does not support this command\n"); | |
4733 | if (buf[0] == 'O' && buf[1] != 'K') | |
4734 | { | |
4735 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4736 | continue; | |
4737 | } | |
4738 | if (strcmp (buf, "OK") == 0) | |
4739 | break; | |
7be570e7 JM |
4740 | if (strlen (buf) == 3 && buf[0] == 'E' |
4741 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4742 | { | |
4743 | error ("Protocol error with Rcmd"); | |
4744 | } | |
96baa820 JM |
4745 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4746 | { | |
4747 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4748 | fputc_unfiltered (c, outbuf); | |
4749 | } | |
4750 | break; | |
4751 | } | |
4752 | } | |
4753 | ||
c906108c | 4754 | static void |
fba45db2 | 4755 | packet_command (char *args, int from_tty) |
c906108c | 4756 | { |
085dd6e6 | 4757 | char *buf = alloca (PBUFSIZ); |
c906108c | 4758 | |
c5aa993b | 4759 | if (!remote_desc) |
c906108c SS |
4760 | error ("command can only be used with remote target"); |
4761 | ||
c5aa993b | 4762 | if (!args) |
c906108c SS |
4763 | error ("remote-packet command requires packet text as argument"); |
4764 | ||
4765 | puts_filtered ("sending: "); | |
4766 | print_packet (args); | |
4767 | puts_filtered ("\n"); | |
4768 | putpkt (args); | |
4769 | ||
c2d11a7d | 4770 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4771 | puts_filtered ("received: "); |
4772 | print_packet (buf); | |
4773 | puts_filtered ("\n"); | |
4774 | } | |
4775 | ||
4776 | #if 0 | |
4777 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4778 | ||
a14ed312 | 4779 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4780 | |
a14ed312 | 4781 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4782 | |
a14ed312 | 4783 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4784 | |
a14ed312 | 4785 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4786 | |
a14ed312 | 4787 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4788 | |
a14ed312 | 4789 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4790 | |
a14ed312 | 4791 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 4792 | |
a14ed312 | 4793 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4794 | |
a14ed312 | 4795 | static void init_remote_threadtests (void); |
c906108c | 4796 | |
c5aa993b | 4797 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4798 | |
4799 | static void | |
fba45db2 | 4800 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
4801 | { |
4802 | int sample_thread = SAMPLE_THREAD; | |
4803 | ||
4804 | printf_filtered ("Remote threadset test\n"); | |
4805 | set_thread (sample_thread, 1); | |
4806 | } | |
4807 | ||
4808 | ||
4809 | static void | |
fba45db2 | 4810 | threadalive_test (char *cmd, int tty) |
c906108c SS |
4811 | { |
4812 | int sample_thread = SAMPLE_THREAD; | |
4813 | ||
4814 | if (remote_thread_alive (sample_thread)) | |
4815 | printf_filtered ("PASS: Thread alive test\n"); | |
4816 | else | |
4817 | printf_filtered ("FAIL: Thread alive test\n"); | |
4818 | } | |
4819 | ||
a14ed312 | 4820 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
4821 | |
4822 | void | |
fba45db2 | 4823 | output_threadid (char *title, threadref *ref) |
c906108c SS |
4824 | { |
4825 | char hexid[20]; | |
4826 | ||
4827 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4828 | hexid[16] = 0; | |
4829 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4830 | } | |
4831 | ||
4832 | static void | |
fba45db2 | 4833 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
4834 | { |
4835 | int startflag = 1; | |
4836 | threadref nextthread; | |
4837 | int done, result_count; | |
4838 | threadref threadlist[3]; | |
4839 | ||
4840 | printf_filtered ("Remote Threadlist test\n"); | |
4841 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4842 | &result_count, &threadlist[0])) | |
4843 | printf_filtered ("FAIL: threadlist test\n"); | |
4844 | else | |
4845 | { | |
4846 | threadref *scan = threadlist; | |
4847 | threadref *limit = scan + result_count; | |
4848 | ||
4849 | while (scan < limit) | |
4850 | output_threadid (" thread ", scan++); | |
4851 | } | |
4852 | } | |
4853 | ||
4854 | void | |
fba45db2 | 4855 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
4856 | { |
4857 | output_threadid ("Threadid: ", &info->threadid); | |
4858 | printf_filtered ("Name: %s\n ", info->shortname); | |
4859 | printf_filtered ("State: %s\n", info->display); | |
4860 | printf_filtered ("other: %s\n\n", info->more_display); | |
4861 | } | |
4862 | ||
4863 | int | |
fba45db2 | 4864 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
4865 | { |
4866 | int result; | |
4867 | int set; | |
4868 | struct gdb_ext_thread_info threadinfo; | |
4869 | ||
4870 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4871 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4872 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4873 | display_thread_info (&threadinfo); | |
4874 | return result; | |
4875 | } | |
4876 | ||
4877 | static void | |
fba45db2 | 4878 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
4879 | { |
4880 | int athread = SAMPLE_THREAD; | |
4881 | threadref thread; | |
4882 | int set; | |
4883 | ||
4884 | int_to_threadref (&thread, athread); | |
4885 | printf_filtered ("Remote Threadinfo test\n"); | |
4886 | if (!get_and_display_threadinfo (&thread)) | |
4887 | printf_filtered ("FAIL cannot get thread info\n"); | |
4888 | } | |
4889 | ||
4890 | static int | |
fba45db2 | 4891 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
4892 | { |
4893 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4894 | return get_and_display_threadinfo (ref); | |
4895 | } | |
4896 | ||
4897 | static void | |
fba45db2 | 4898 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
4899 | { |
4900 | printf_filtered ("Remote Threadlist update test\n"); | |
4901 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4902 | } | |
4903 | ||
4904 | static void | |
4905 | init_remote_threadtests (void) | |
4906 | { | |
4907 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4908 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4909 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4910 | "Fetch and display info about one thread"); | |
4911 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4912 | "Test setting to a different thread"); | |
4913 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4914 | "Iterate through updating all remote thread info"); | |
4915 | add_com ("talive", class_obscure, threadalive_test, | |
4916 | " Remote thread alive test "); | |
4917 | } | |
4918 | ||
4919 | #endif /* 0 */ | |
4920 | ||
4921 | static void | |
fba45db2 | 4922 | init_remote_ops (void) |
c906108c | 4923 | { |
c5aa993b | 4924 | remote_ops.to_shortname = "remote"; |
c906108c | 4925 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4926 | remote_ops.to_doc = |
c906108c | 4927 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
4928 | Specify the serial device it is connected to\n\ |
4929 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
4930 | remote_ops.to_open = remote_open; |
4931 | remote_ops.to_close = remote_close; | |
c906108c | 4932 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4933 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4934 | remote_ops.to_wait = remote_wait; |
4935 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4936 | remote_ops.to_store_registers = remote_store_registers; | |
4937 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4938 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4939 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4940 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4941 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4942 | remote_ops.to_kill = remote_kill; |
4943 | remote_ops.to_load = generic_load; | |
c906108c SS |
4944 | remote_ops.to_mourn_inferior = remote_mourn; |
4945 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4946 | remote_ops.to_find_new_threads = remote_threads_info; |
9d1f7ab2 | 4947 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
4948 | remote_ops.to_stop = remote_stop; |
4949 | remote_ops.to_query = remote_query; | |
96baa820 | 4950 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 4951 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
4952 | remote_ops.to_has_all_memory = 1; |
4953 | remote_ops.to_has_memory = 1; | |
4954 | remote_ops.to_has_stack = 1; | |
4955 | remote_ops.to_has_registers = 1; | |
4956 | remote_ops.to_has_execution = 1; | |
4957 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4958 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4959 | } |
4960 | ||
4961 | /* Set up the extended remote vector by making a copy of the standard | |
4962 | remote vector and adding to it. */ | |
4963 | ||
4964 | static void | |
fba45db2 | 4965 | init_extended_remote_ops (void) |
c906108c SS |
4966 | { |
4967 | extended_remote_ops = remote_ops; | |
4968 | ||
0f71a2f6 | 4969 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4970 | extended_remote_ops.to_longname = |
c906108c | 4971 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4972 | extended_remote_ops.to_doc = |
c906108c SS |
4973 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4974 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4975 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4976 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4977 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4978 | } |
4979 | ||
4980 | /* | |
4981 | * Command: info remote-process | |
4982 | * | |
4983 | * This implements Cisco's version of the "info proc" command. | |
4984 | * | |
4985 | * This query allows the target stub to return an arbitrary string | |
4986 | * (or strings) giving arbitrary information about the target process. | |
4987 | * This is optional; the target stub isn't required to implement it. | |
4988 | * | |
4989 | * Syntax: qfProcessInfo request first string | |
4990 | * qsProcessInfo request subsequent string | |
4991 | * reply: 'O'<hex-encoded-string> | |
4992 | * 'l' last reply (empty) | |
4993 | */ | |
4994 | ||
4995 | static void | |
c2d11a7d | 4996 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 4997 | { |
085dd6e6 | 4998 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
4999 | |
5000 | if (remote_desc == 0) | |
5001 | error ("Command can only be used when connected to the remote target."); | |
5002 | ||
5003 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 5004 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 5005 | if (buf[0] == 0) |
c5aa993b | 5006 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5007 | |
5008 | if (buf[0] == 'E') | |
5009 | error ("info proc: target error."); | |
5010 | ||
c5aa993b | 5011 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5012 | { |
5013 | remote_console_output (&buf[1]); | |
5014 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 5015 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
5016 | } |
5017 | } | |
5018 | ||
5019 | /* | |
5020 | * Target Cisco | |
5021 | */ | |
5022 | ||
5023 | static void | |
c2d11a7d | 5024 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5025 | { |
5026 | if (name == 0) | |
5027 | error ( | |
c5aa993b | 5028 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5029 | device is attached to the remote system (e.g. host:port)."); |
5030 | ||
6426a772 JM |
5031 | /* See FIXME above */ |
5032 | wait_forever_enabled_p = 1; | |
5033 | ||
0f71a2f6 JM |
5034 | target_preopen (from_tty); |
5035 | ||
5036 | unpush_target (&remote_cisco_ops); | |
5037 | ||
0f71a2f6 JM |
5038 | remote_desc = SERIAL_OPEN (name); |
5039 | if (!remote_desc) | |
5040 | perror_with_name (name); | |
5041 | ||
5042 | /* | |
5043 | * If a baud rate was specified on the gdb command line it will | |
5044 | * be greater than the initial value of -1. If it is, use it otherwise | |
5045 | * default to 9600 | |
5046 | */ | |
5047 | ||
5048 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5049 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5050 | { |
5051 | SERIAL_CLOSE (remote_desc); | |
5052 | perror_with_name (name); | |
5053 | } | |
5054 | ||
5055 | SERIAL_RAW (remote_desc); | |
5056 | ||
5057 | /* If there is something sitting in the buffer we might take it as a | |
5058 | response to a command, which would be bad. */ | |
5059 | SERIAL_FLUSH_INPUT (remote_desc); | |
5060 | ||
5061 | if (from_tty) | |
5062 | { | |
5063 | puts_filtered ("Remote debugging using "); | |
5064 | puts_filtered (name); | |
5065 | puts_filtered ("\n"); | |
5066 | } | |
5067 | ||
5068 | remote_cisco_mode = 1; | |
5069 | ||
5070 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5071 | ||
d471ea57 | 5072 | init_all_packet_configs (); |
0f71a2f6 | 5073 | |
c5aa993b | 5074 | general_thread = -2; |
0f71a2f6 JM |
5075 | continue_thread = -2; |
5076 | ||
9d1f7ab2 MS |
5077 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5078 | use_threadinfo_query = 1; | |
5079 | use_threadextra_query = 1; | |
5080 | ||
0f71a2f6 JM |
5081 | /* Without this, some commands which require an active target (such |
5082 | as kill) won't work. This variable serves (at least) double duty | |
5083 | as both the pid of the target process (if it has such), and as a | |
5084 | flag indicating that a target is active. These functions should | |
5085 | be split out into seperate variables, especially since GDB will | |
5086 | someday have a notion of debugging several processes. */ | |
5087 | inferior_pid = MAGIC_NULL_PID; | |
5088 | ||
5089 | /* Start the remote connection; if error (0), discard this target. */ | |
5090 | ||
c5aa993b JM |
5091 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5092 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5093 | RETURN_MASK_ALL)) |
5094 | { | |
5095 | pop_target (); | |
5096 | return; | |
5097 | } | |
5098 | } | |
5099 | ||
5100 | static void | |
c2d11a7d | 5101 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5102 | { |
5103 | remote_cisco_mode = 0; | |
5104 | remote_close (quitting); | |
5105 | } | |
5106 | ||
c5aa993b | 5107 | static void |
8ab86381 | 5108 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5109 | { |
5110 | remote_mourn_1 (&remote_cisco_ops); | |
5111 | } | |
5112 | ||
c5aa993b JM |
5113 | enum |
5114 | { | |
5115 | READ_MORE, | |
5116 | FATAL_ERROR, | |
5117 | ENTER_DEBUG, | |
0f71a2f6 | 5118 | DISCONNECT_TELNET |
c5aa993b JM |
5119 | } |
5120 | minitelnet_return; | |
0f71a2f6 JM |
5121 | |
5122 | /* shared between readsocket() and readtty() */ | |
5123 | static char *tty_input; | |
5124 | ||
5125 | static int escape_count; | |
5126 | static int echo_check; | |
5127 | extern int quit_flag; | |
5128 | ||
5129 | static int | |
c2d11a7d | 5130 | readsocket (void) |
0f71a2f6 JM |
5131 | { |
5132 | int data; | |
5133 | ||
5134 | /* Loop until the socket doesn't have any more data */ | |
5135 | ||
c5aa993b | 5136 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5137 | { |
5138 | /* Check for the escape sequence */ | |
c5aa993b | 5139 | if (data == '|') |
0f71a2f6 JM |
5140 | { |
5141 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5142 | if (++escape_count == 4) |
0f71a2f6 JM |
5143 | { |
5144 | return ENTER_DEBUG; | |
5145 | } | |
c5aa993b JM |
5146 | else |
5147 | { /* This is a '|', but not the fourth in a row. | |
5148 | Continue without echoing it. If it isn't actually | |
5149 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5150 | continue; |
5151 | } | |
5152 | } | |
c5aa993b JM |
5153 | else |
5154 | /* Not a '|' */ | |
5155 | { | |
0f71a2f6 JM |
5156 | /* Ensure any pending '|'s are flushed. */ |
5157 | ||
c5aa993b JM |
5158 | for (; escape_count > 0; escape_count--) |
5159 | putchar ('|'); | |
0f71a2f6 | 5160 | } |
0f71a2f6 | 5161 | |
c5aa993b JM |
5162 | if (data == '\r') /* If this is a return character, */ |
5163 | continue; /* - just supress it. */ | |
5164 | ||
5165 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5166 | { |
5167 | if (tty_input[echo_check] == data) | |
5168 | { | |
c5aa993b JM |
5169 | echo_check++; /* Character matched user input: */ |
5170 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5171 | } |
c5aa993b JM |
5172 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5173 | { /* End of the line (and of echo checking). */ | |
5174 | echo_check = -1; /* No more echo supression */ | |
5175 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5176 | } |
5177 | else | |
c5aa993b JM |
5178 | { /* Failed check for echo of user input. |
5179 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5180 | int j; |
5181 | ||
c5aa993b | 5182 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5183 | putchar (tty_input[j]); |
5184 | echo_check = -1; | |
5185 | } | |
5186 | } | |
c5aa993b | 5187 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5188 | } |
5189 | ||
c5aa993b JM |
5190 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5191 | return READ_MORE; /* Try to read some more */ | |
5192 | else | |
5193 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5194 | } |
5195 | ||
5196 | static int | |
c2d11a7d | 5197 | readtty (void) |
0f71a2f6 | 5198 | { |
0f71a2f6 JM |
5199 | int tty_bytecount; |
5200 | ||
5201 | /* First, read a buffer full from the terminal */ | |
5202 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5203 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5204 | { |
5205 | perror ("readtty: read failed"); | |
5206 | return FATAL_ERROR; | |
5207 | } | |
5208 | ||
5209 | /* Remove a quoted newline. */ | |
5210 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5211 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5212 | { | |
c5aa993b JM |
5213 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5214 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5215 | } |
5216 | ||
5217 | /* Turn trailing newlines into returns */ | |
5218 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5219 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5220 | |
5221 | /* If the line consists of a ~, enter debugging mode. */ | |
5222 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5223 | return ENTER_DEBUG; | |
5224 | ||
5225 | /* Make this a zero terminated string and write it out */ | |
5226 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5227 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5228 | { |
5229 | perror_with_name ("readtty: write failed"); | |
5230 | return FATAL_ERROR; | |
5231 | } | |
5232 | ||
5233 | return READ_MORE; | |
5234 | } | |
5235 | ||
5236 | static int | |
c2d11a7d | 5237 | minitelnet (void) |
0f71a2f6 JM |
5238 | { |
5239 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5240 | int tablesize; /* max number of FDs for select */ |
5241 | int status; | |
5242 | int quit_count = 0; | |
0f71a2f6 JM |
5243 | |
5244 | extern int escape_count; /* global shared by readsocket */ | |
5245 | extern int echo_check; /* ditto */ | |
5246 | ||
5247 | escape_count = 0; | |
c5aa993b | 5248 | echo_check = -1; |
0f71a2f6 JM |
5249 | |
5250 | tablesize = 8 * sizeof (input); | |
5251 | ||
c5aa993b | 5252 | for (;;) |
0f71a2f6 JM |
5253 | { |
5254 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5255 | this must be done *before* the select as there may be |
5256 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5257 | |
c5aa993b | 5258 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5259 | { |
5260 | error ("Debugging terminated by communications error"); | |
5261 | } | |
c5aa993b | 5262 | else if (status != READ_MORE) |
0f71a2f6 JM |
5263 | { |
5264 | return (status); | |
5265 | } | |
5266 | ||
c5aa993b | 5267 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5268 | |
5269 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5270 | |
0f71a2f6 | 5271 | FD_ZERO (&input); |
c5aa993b | 5272 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5273 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5274 | |
5275 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5276 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5277 | { |
5278 | error ("Communications error on select %d", errno); | |
5279 | } | |
5280 | ||
5281 | /* Handle Control-C typed */ | |
5282 | ||
c5aa993b | 5283 | if (quit_flag) |
0f71a2f6 JM |
5284 | { |
5285 | if ((++quit_count) == 2) | |
5286 | { | |
5287 | if (query ("Interrupt GDB? ")) | |
5288 | { | |
5289 | printf_filtered ("Interrupted by user.\n"); | |
5290 | return_to_top_level (RETURN_QUIT); | |
5291 | } | |
5292 | quit_count = 0; | |
5293 | } | |
5294 | quit_flag = 0; | |
5295 | ||
5296 | if (remote_break) | |
5297 | SERIAL_SEND_BREAK (remote_desc); | |
5298 | else | |
5299 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5300 | ||
5301 | continue; | |
5302 | } | |
5303 | ||
5304 | /* Handle console input */ | |
5305 | ||
c5aa993b | 5306 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5307 | { |
5308 | quit_count = 0; | |
5309 | echo_check = 0; | |
5310 | status = readtty (); | |
5311 | if (status == READ_MORE) | |
5312 | continue; | |
5313 | ||
5314 | return status; /* telnet session ended */ | |
5315 | } | |
5316 | } | |
5317 | } | |
5318 | ||
5319 | static int | |
c2d11a7d | 5320 | remote_cisco_wait (int pid, struct target_waitstatus *status) |
0f71a2f6 | 5321 | { |
c5aa993b | 5322 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5323 | { |
5324 | error ("Debugging session terminated by protocol error"); | |
5325 | } | |
5326 | putpkt ("?"); | |
5327 | return remote_wait (pid, status); | |
5328 | } | |
5329 | ||
5330 | static void | |
fba45db2 | 5331 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5332 | { |
5333 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5334 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5335 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5336 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5337 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5338 | remote_cisco_ops.to_open = remote_cisco_open; |
5339 | remote_cisco_ops.to_close = remote_cisco_close; | |
5340 | remote_cisco_ops.to_detach = remote_detach; | |
5341 | remote_cisco_ops.to_resume = remote_resume; | |
5342 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5343 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5344 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5345 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5346 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5347 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5348 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5349 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5350 | remote_cisco_ops.to_kill = remote_kill; |
5351 | remote_cisco_ops.to_load = generic_load; | |
5352 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5353 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5354 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5355 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c5aa993b JM |
5356 | remote_cisco_ops.to_stratum = process_stratum; |
5357 | remote_cisco_ops.to_has_all_memory = 1; | |
5358 | remote_cisco_ops.to_has_memory = 1; | |
5359 | remote_cisco_ops.to_has_stack = 1; | |
5360 | remote_cisco_ops.to_has_registers = 1; | |
5361 | remote_cisco_ops.to_has_execution = 1; | |
5362 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5363 | } |
5364 | ||
6426a772 JM |
5365 | static int |
5366 | remote_can_async_p (void) | |
5367 | { | |
5368 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5369 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5370 | } |
5371 | ||
5372 | static int | |
5373 | remote_is_async_p (void) | |
5374 | { | |
5375 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5376 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5377 | } |
5378 | ||
2acceee2 JM |
5379 | /* Pass the SERIAL event on and up to the client. One day this code |
5380 | will be able to delay notifying the client of an event until the | |
5381 | point where an entire packet has been received. */ | |
5382 | ||
5383 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5384 | static void *async_client_context; | |
5385 | static serial_event_ftype remote_async_serial_handler; | |
5386 | ||
6426a772 | 5387 | static void |
2acceee2 | 5388 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5389 | { |
2acceee2 JM |
5390 | /* Don't propogate error information up to the client. Instead let |
5391 | the client find out about the error by querying the target. */ | |
5392 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5393 | } | |
5394 | ||
5395 | static void | |
5396 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5397 | { | |
ed9a39eb JM |
5398 | if (current_target.to_async_mask_value == 0) |
5399 | internal_error ("Calling remote_async when async is masked"); | |
5400 | ||
2acceee2 JM |
5401 | if (callback != NULL) |
5402 | { | |
5403 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5404 | async_client_callback = callback; | |
5405 | async_client_context = context; | |
5406 | } | |
5407 | else | |
5408 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5409 | } |
5410 | ||
43ff13b4 JM |
5411 | /* Target async and target extended-async. |
5412 | ||
5413 | This are temporary targets, until it is all tested. Eventually | |
5414 | async support will be incorporated int the usual 'remote' | |
5415 | target. */ | |
5416 | ||
5417 | static void | |
c2d11a7d | 5418 | init_remote_async_ops (void) |
43ff13b4 JM |
5419 | { |
5420 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5421 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5422 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5423 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5424 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5425 | remote_async_ops.to_open = remote_async_open; |
5426 | remote_async_ops.to_close = remote_close; | |
5427 | remote_async_ops.to_detach = remote_async_detach; | |
5428 | remote_async_ops.to_resume = remote_async_resume; | |
5429 | remote_async_ops.to_wait = remote_async_wait; | |
5430 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5431 | remote_async_ops.to_store_registers = remote_store_registers; | |
5432 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5433 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5434 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5435 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5436 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5437 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5438 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5439 | remote_async_ops.to_kill = remote_async_kill; |
5440 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5441 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5442 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5443 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5444 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
43ff13b4 JM |
5445 | remote_async_ops.to_stop = remote_stop; |
5446 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5447 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5448 | remote_async_ops.to_stratum = process_stratum; |
5449 | remote_async_ops.to_has_all_memory = 1; | |
5450 | remote_async_ops.to_has_memory = 1; | |
5451 | remote_async_ops.to_has_stack = 1; | |
5452 | remote_async_ops.to_has_registers = 1; | |
5453 | remote_async_ops.to_has_execution = 1; | |
5454 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5455 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5456 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5457 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5458 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5459 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5460 | } |
5461 | ||
5462 | /* Set up the async extended remote vector by making a copy of the standard | |
5463 | remote vector and adding to it. */ | |
5464 | ||
5465 | static void | |
c2d11a7d | 5466 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5467 | { |
5468 | extended_async_remote_ops = remote_async_ops; | |
5469 | ||
5470 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5471 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5472 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5473 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5474 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5475 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5476 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5477 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5478 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5479 | } | |
5480 | ||
5a2468f5 | 5481 | static void |
c2d11a7d | 5482 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5483 | { |
5484 | ||
5485 | } | |
5486 | ||
d471ea57 AC |
5487 | static void |
5488 | show_remote_cmd (char *args, int from_tty) | |
5489 | { | |
5490 | show_remote_protocol_Z_packet_cmd (args, from_tty); | |
5491 | show_remote_protocol_P_packet_cmd (args, from_tty); | |
5492 | show_remote_protocol_binary_download_cmd (args, from_tty); | |
5493 | } | |
5a2468f5 | 5494 | |
0f71a2f6 | 5495 | static void |
fba45db2 | 5496 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5497 | { |
11cf8741 JM |
5498 | build_remote_packet_sizes (); |
5499 | ||
5500 | /* Cisco stuff */ | |
0f71a2f6 | 5501 | tty_input = xmalloc (PBUFSIZ); |
11cf8741 | 5502 | remote_address_size = TARGET_PTR_BIT; |
0f71a2f6 JM |
5503 | } |
5504 | ||
c906108c | 5505 | void |
fba45db2 | 5506 | _initialize_remote (void) |
c906108c | 5507 | { |
5a2468f5 JM |
5508 | static struct cmd_list_element *remote_set_cmdlist; |
5509 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5510 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5511 | |
0f71a2f6 JM |
5512 | /* architecture specific data */ |
5513 | build_remote_gdbarch_data (); | |
5514 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5515 | register_remote_packet_sizes (); |
5516 | register_gdbarch_swap (&remote_address_size, | |
5517 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5518 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5519 | ||
c906108c SS |
5520 | init_remote_ops (); |
5521 | add_target (&remote_ops); | |
5522 | ||
5523 | init_extended_remote_ops (); | |
5524 | add_target (&extended_remote_ops); | |
cce74817 | 5525 | |
43ff13b4 JM |
5526 | init_remote_async_ops (); |
5527 | add_target (&remote_async_ops); | |
5528 | ||
5529 | init_extended_async_remote_ops (); | |
5530 | add_target (&extended_async_remote_ops); | |
5531 | ||
0f71a2f6 JM |
5532 | init_remote_cisco_ops (); |
5533 | add_target (&remote_cisco_ops); | |
5534 | ||
c906108c SS |
5535 | #if 0 |
5536 | init_remote_threadtests (); | |
5537 | #endif | |
5538 | ||
d471ea57 AC |
5539 | /* set/show remote ... */ |
5540 | ||
5a2468f5 JM |
5541 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5542 | Remote protocol specific variables\n\ | |
5543 | Configure various remote-protocol specific variables such as\n\ | |
5544 | the packets being used", | |
cff3e48b | 5545 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5546 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5547 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5548 | Remote protocol specific variables\n\ |
5549 | Configure various remote-protocol specific variables such as\n\ | |
5550 | the packets being used", | |
cff3e48b | 5551 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5552 | 0/*allow-unknown*/, &showlist); |
5553 | ||
c5aa993b | 5554 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5555 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5556 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5557 | &cmdlist); |
5558 | ||
5559 | add_cmd ("packet", class_maintenance, packet_command, | |
5560 | "Send an arbitrary packet to a remote target.\n\ | |
5561 | maintenance packet TEXT\n\ | |
5562 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5563 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5564 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5565 | terminating `#' character and checksum.", | |
5566 | &maintenancelist); | |
5567 | ||
c5aa993b | 5568 | add_show_from_set |
c906108c | 5569 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5570 | var_boolean, (char *) &remote_break, |
c906108c SS |
5571 | "Set whether to send break if interrupted.\n", |
5572 | &setlist), | |
5573 | &showlist); | |
5574 | ||
11cf8741 JM |
5575 | /* Install commands for configuring memory read/write packets. */ |
5576 | ||
5577 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5578 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5579 | &setlist); | |
4ad5b0f7 | 5580 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5581 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5582 | &showlist); | |
5583 | add_cmd ("memory-write-packet-size", no_class, | |
5584 | set_memory_write_packet_size, | |
5585 | "Set the maximum number of bytes per memory-write packet.\n" | |
5586 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5587 | "default packet size. The actual limit is further reduced\n" | |
5588 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5589 | "further restriction and ``limit'' to enable that restriction\n", | |
5590 | &remote_set_cmdlist); | |
5591 | add_cmd ("memory-read-packet-size", no_class, | |
5592 | set_memory_read_packet_size, | |
5593 | "Set the maximum number of bytes per memory-read packet.\n" | |
5594 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5595 | "default packet size. The actual limit is further reduced\n" | |
5596 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5597 | "further restriction and ``limit'' to enable that restriction\n", | |
5598 | &remote_set_cmdlist); | |
5599 | add_cmd ("memory-write-packet-size", no_class, | |
5600 | show_memory_write_packet_size, | |
5601 | "Show the maximum number of bytes per memory-write packet.\n", | |
5602 | &remote_show_cmdlist); | |
5603 | add_cmd ("memory-read-packet-size", no_class, | |
5604 | show_memory_read_packet_size, | |
5605 | "Show the maximum number of bytes per memory-read packet.\n", | |
5606 | &remote_show_cmdlist); | |
c906108c | 5607 | |
c5aa993b | 5608 | add_show_from_set |
c906108c | 5609 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5610 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5611 | "Set the maximum size of the address (in bits) \ |
5612 | in a memory packet.\n", | |
5613 | &setlist), | |
c5aa993b | 5614 | &showlist); |
c906108c | 5615 | |
96baa820 JM |
5616 | add_packet_config_cmd (&remote_protocol_binary_download, |
5617 | "X", "binary-download", | |
5618 | set_remote_protocol_binary_download_cmd, | |
5619 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5620 | &remote_set_cmdlist, &remote_show_cmdlist, |
5621 | 1); | |
96baa820 JM |
5622 | #if 0 |
5623 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5624 | compatibility. */ | |
c5aa993b | 5625 | add_show_from_set |
b83266a0 SS |
5626 | (add_set_cmd ("remotebinarydownload", no_class, |
5627 | var_boolean, (char *) &remote_binary_download, | |
5628 | "Set binary downloads.\n", &setlist), | |
5629 | &showlist); | |
96baa820 | 5630 | #endif |
0f71a2f6 JM |
5631 | |
5632 | add_info ("remote-process", remote_info_process, | |
5633 | "Query the remote system for process info."); | |
5634 | ||
d471ea57 AC |
5635 | add_packet_config_cmd (&remote_protocol_P, |
5636 | "P", "set-register", | |
5a2468f5 JM |
5637 | set_remote_protocol_P_packet_cmd, |
5638 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5639 | &remote_set_cmdlist, &remote_show_cmdlist, |
5640 | 1); | |
5641 | ||
5642 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5643 | "Z0", "software-breakpoint", | |
5644 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5645 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5646 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5647 | 0); | |
5648 | ||
5649 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5650 | "Z1", "hardware-breakpoint", | |
5651 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5652 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5653 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5654 | 0); | |
5655 | ||
5656 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5657 | "Z2", "write-watchpoint", | |
5658 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5659 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5660 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5661 | 0); | |
5662 | ||
5663 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5664 | "Z3", "read-watchpoint", | |
5665 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5666 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5667 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5668 | 0); | |
5669 | ||
5670 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5671 | "Z4", "access-watchpoint", | |
5672 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5673 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5674 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5675 | 0); | |
5676 | ||
5677 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
5678 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
5679 | &remote_Z_packet_detect, | |
5680 | "\ | |
5681 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
5682 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
5683 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
5684 | "Show use of remote protocol `Z' packets ", | |
5685 | &remote_show_cmdlist); | |
c906108c | 5686 | } |