Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
29e57380 | 2 | Copyright 1988, 1991-2000, 2001 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, | |
29e57380 | 73 | struct mem_attrib *attrib, |
a14ed312 | 74 | struct target_ops *target); |
c906108c | 75 | |
a14ed312 | 76 | static void remote_prepare_to_store (void); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_fetch_registers (int regno); |
c906108c | 79 | |
a14ed312 KB |
80 | static void remote_resume (int pid, int step, enum target_signal siggnal); |
81 | static void remote_async_resume (int pid, int step, | |
82 | enum target_signal siggnal); | |
83 | static int remote_start_remote (PTR); | |
c906108c | 84 | |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
a14ed312 KB |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
92 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
93 | int extended_p); | |
c906108c | 94 | |
a14ed312 | 95 | static void remote_close (int quitting); |
c906108c | 96 | |
a14ed312 | 97 | static void remote_store_registers (int regno); |
c906108c | 98 | |
a14ed312 KB |
99 | static void remote_mourn (void); |
100 | static void remote_async_mourn (void); | |
c906108c | 101 | |
a14ed312 | 102 | static void extended_remote_restart (void); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_mourn (void); |
c906108c | 105 | |
a14ed312 KB |
106 | static void extended_remote_create_inferior (char *, char *, char **); |
107 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 108 | |
a14ed312 | 109 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 110 | |
c2d11a7d | 111 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 112 | |
a14ed312 | 113 | static int readchar (int timeout); |
c906108c | 114 | |
a14ed312 KB |
115 | static int remote_wait (int pid, struct target_waitstatus *status); |
116 | static int remote_async_wait (int pid, struct target_waitstatus *status); | |
c906108c | 117 | |
a14ed312 KB |
118 | static void remote_kill (void); |
119 | static void remote_async_kill (void); | |
c906108c | 120 | |
a14ed312 | 121 | static int tohex (int nib); |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_detach (char *args, int from_tty); |
124 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 125 | |
a14ed312 | 126 | static void remote_interrupt (int signo); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_interrupt_twice (int signo); |
7a292a7a | 129 | |
a14ed312 | 130 | static void interrupt_query (void); |
c906108c | 131 | |
a14ed312 | 132 | static void set_thread (int, int); |
c906108c | 133 | |
a14ed312 | 134 | static int remote_thread_alive (int); |
c906108c | 135 | |
a14ed312 | 136 | static void get_offsets (void); |
c906108c | 137 | |
c2d11a7d | 138 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 139 | |
a14ed312 | 140 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 141 | |
a14ed312 | 142 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 143 | |
a14ed312 | 144 | static int hexnumlen (ULONGEST num); |
c906108c | 145 | |
a14ed312 | 146 | static void init_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void init_extended_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
151 | |
152 | static struct target_ops remote_cisco_ops; | |
153 | ||
a14ed312 | 154 | static void remote_stop (void); |
c906108c | 155 | |
a14ed312 | 156 | static int ishex (int ch, int *val); |
c906108c | 157 | |
a14ed312 | 158 | static int stubhex (int ch); |
c906108c | 159 | |
a14ed312 | 160 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
a14ed312 | 168 | static void print_packet (char *); |
c906108c | 169 | |
a14ed312 | 170 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 171 | |
a14ed312 | 172 | static void compare_sections_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void packet_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 177 | |
a14ed312 | 178 | static int remote_current_thread (int oldpid); |
c906108c | 179 | |
a14ed312 | 180 | static void remote_find_new_threads (void); |
c906108c | 181 | |
a14ed312 | 182 | static void record_currthread (int currthread); |
c906108c | 183 | |
c906108c SS |
184 | /* exported functions */ |
185 | ||
a14ed312 | 186 | extern int fromhex (int a); |
c906108c | 187 | |
a14ed312 | 188 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 189 | |
a14ed312 | 190 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 191 | |
5a2468f5 | 192 | struct packet_config; |
5a2468f5 | 193 | |
a14ed312 | 194 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 195 | |
d471ea57 | 196 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 197 | |
c906108c SS |
198 | /* Define the target subroutine names */ |
199 | ||
a14ed312 | 200 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 201 | |
a14ed312 | 202 | void _initialize_remote (void); |
c906108c SS |
203 | |
204 | /* */ | |
205 | ||
206 | static struct target_ops remote_ops; | |
207 | ||
208 | static struct target_ops extended_remote_ops; | |
209 | ||
43ff13b4 JM |
210 | /* Temporary target ops. Just like the remote_ops and |
211 | extended_remote_ops, but with asynchronous support. */ | |
212 | static struct target_ops remote_async_ops; | |
213 | ||
214 | static struct target_ops extended_async_remote_ops; | |
215 | ||
6426a772 JM |
216 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
217 | ``forever'' still use the normal timeout mechanism. This is | |
218 | currently used by the ASYNC code to guarentee that target reads | |
219 | during the initial connect always time-out. Once getpkt has been | |
220 | modified to return a timeout indication and, in turn | |
221 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
222 | this can go away. */ | |
223 | static int wait_forever_enabled_p = 1; | |
224 | ||
225 | ||
c906108c SS |
226 | /* This variable chooses whether to send a ^C or a break when the user |
227 | requests program interruption. Although ^C is usually what remote | |
228 | systems expect, and that is the default here, sometimes a break is | |
229 | preferable instead. */ | |
230 | ||
231 | static int remote_break; | |
232 | ||
c906108c SS |
233 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
234 | remote_open knows that we don't have a file open when the program | |
235 | starts. */ | |
236 | static serial_t remote_desc = NULL; | |
237 | ||
0f71a2f6 JM |
238 | /* This is set by the target (thru the 'S' message) |
239 | to denote that the target is in kernel mode. */ | |
240 | static int cisco_kernel_mode = 0; | |
241 | ||
c906108c SS |
242 | /* This variable sets the number of bits in an address that are to be |
243 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
244 | leading zeros, the entire address would be sent. This variable | |
245 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
246 | initial implementation of remote.c restricted the address sent in | |
247 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
248 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
249 | address was never sent. Since fixing this bug may cause a break in | |
250 | some remote targets this variable is principly provided to | |
251 | facilitate backward compatibility. */ | |
252 | ||
253 | static int remote_address_size; | |
254 | ||
6426a772 JM |
255 | /* Tempoary to track who currently owns the terminal. See |
256 | target_async_terminal_* for more details. */ | |
257 | ||
258 | static int remote_async_terminal_ours_p; | |
259 | ||
11cf8741 JM |
260 | \f |
261 | /* This is the size (in chars) of the first response to the ``g'' | |
262 | packet. It is used as a heuristic when determining the maximum | |
263 | size of memory-read and memory-write packets. A target will | |
264 | typically only reserve a buffer large enough to hold the ``g'' | |
265 | packet. The size does not include packet overhead (headers and | |
266 | trailers). */ | |
267 | ||
268 | static long actual_register_packet_size; | |
269 | ||
270 | /* This is the maximum size (in chars) of a non read/write packet. It | |
271 | is also used as a cap on the size of read/write packets. */ | |
272 | ||
273 | static long remote_packet_size; | |
274 | /* compatibility. */ | |
275 | #define PBUFSIZ (remote_packet_size) | |
276 | ||
277 | /* User configurable variables for the number of characters in a | |
278 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
279 | default. Some targets need smaller values (fifo overruns, et.al.) | |
280 | and some users need larger values (speed up transfers). The | |
281 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
282 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
283 | negative - a hard limit). */ | |
284 | ||
285 | struct memory_packet_config | |
286 | { | |
287 | char *name; | |
288 | long size; | |
289 | int fixed_p; | |
290 | }; | |
291 | ||
292 | /* Compute the current size of a read/write packet. Since this makes | |
293 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
294 | ||
295 | static long | |
296 | get_memory_packet_size (struct memory_packet_config *config) | |
297 | { | |
298 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
299 | law?) that some hosts don't cope very well with large alloca() | |
300 | calls. Eventually the alloca() code will be replaced by calls to | |
301 | xmalloc() and make_cleanups() allowing this restriction to either | |
302 | be lifted or removed. */ | |
303 | #ifndef MAX_REMOTE_PACKET_SIZE | |
304 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
305 | #endif | |
306 | /* NOTE: 16 is just chosen at random. */ | |
307 | #ifndef MIN_REMOTE_PACKET_SIZE | |
308 | #define MIN_REMOTE_PACKET_SIZE 16 | |
309 | #endif | |
310 | long what_they_get; | |
311 | if (config->fixed_p) | |
312 | { | |
313 | if (config->size <= 0) | |
314 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
315 | else | |
316 | what_they_get = config->size; | |
317 | } | |
318 | else | |
319 | { | |
320 | what_they_get = remote_packet_size; | |
321 | /* Limit the packet to the size specified by the user. */ | |
322 | if (config->size > 0 | |
323 | && what_they_get > config->size) | |
324 | what_they_get = config->size; | |
325 | /* Limit it to the size of the targets ``g'' response. */ | |
326 | if (actual_register_packet_size > 0 | |
327 | && what_they_get > actual_register_packet_size) | |
328 | what_they_get = actual_register_packet_size; | |
329 | } | |
330 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
331 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
332 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
333 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
334 | return what_they_get; | |
335 | } | |
336 | ||
337 | /* Update the size of a read/write packet. If they user wants | |
338 | something really big then do a sanity check. */ | |
339 | ||
340 | static void | |
341 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
342 | { | |
343 | int fixed_p = config->fixed_p; | |
344 | long size = config->size; | |
345 | if (args == NULL) | |
346 | error ("Argument required (integer, `fixed' or `limited')."); | |
347 | else if (strcmp (args, "hard") == 0 | |
348 | || strcmp (args, "fixed") == 0) | |
349 | fixed_p = 1; | |
350 | else if (strcmp (args, "soft") == 0 | |
351 | || strcmp (args, "limit") == 0) | |
352 | fixed_p = 0; | |
353 | else | |
354 | { | |
355 | char *end; | |
356 | size = strtoul (args, &end, 0); | |
357 | if (args == end) | |
358 | error ("Invalid %s (bad syntax).", config->name); | |
359 | #if 0 | |
360 | /* Instead of explicitly capping the size of a packet to | |
361 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
362 | instead allowed to set the size to something arbitrarily | |
363 | large. */ | |
364 | if (size > MAX_REMOTE_PACKET_SIZE) | |
365 | error ("Invalid %s (too large).", config->name); | |
366 | #endif | |
367 | } | |
368 | /* Extra checks? */ | |
369 | if (fixed_p && !config->fixed_p) | |
370 | { | |
371 | if (! query ("The target may not be able to correctly handle a %s\n" | |
372 | "of %ld bytes. Change the packet size? ", | |
373 | config->name, size)) | |
374 | error ("Packet size not changed."); | |
375 | } | |
376 | /* Update the config. */ | |
377 | config->fixed_p = fixed_p; | |
378 | config->size = size; | |
379 | } | |
380 | ||
381 | static void | |
382 | show_memory_packet_size (struct memory_packet_config *config) | |
383 | { | |
384 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
385 | if (config->fixed_p) | |
386 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
387 | get_memory_packet_size (config)); | |
388 | else | |
389 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
390 | get_memory_packet_size (config)); | |
391 | } | |
392 | ||
393 | static struct memory_packet_config memory_write_packet_config = | |
394 | { | |
395 | "memory-write-packet-size", | |
396 | }; | |
397 | ||
398 | static void | |
399 | set_memory_write_packet_size (char *args, int from_tty) | |
400 | { | |
401 | set_memory_packet_size (args, &memory_write_packet_config); | |
402 | } | |
403 | ||
404 | static void | |
405 | show_memory_write_packet_size (char *args, int from_tty) | |
406 | { | |
407 | show_memory_packet_size (&memory_write_packet_config); | |
408 | } | |
409 | ||
410 | static long | |
411 | get_memory_write_packet_size (void) | |
412 | { | |
413 | return get_memory_packet_size (&memory_write_packet_config); | |
414 | } | |
415 | ||
416 | static struct memory_packet_config memory_read_packet_config = | |
417 | { | |
418 | "memory-read-packet-size", | |
419 | }; | |
420 | ||
421 | static void | |
422 | set_memory_read_packet_size (char *args, int from_tty) | |
423 | { | |
424 | set_memory_packet_size (args, &memory_read_packet_config); | |
425 | } | |
426 | ||
427 | static void | |
428 | show_memory_read_packet_size (char *args, int from_tty) | |
429 | { | |
430 | show_memory_packet_size (&memory_read_packet_config); | |
431 | } | |
432 | ||
433 | static long | |
434 | get_memory_read_packet_size (void) | |
435 | { | |
436 | long size = get_memory_packet_size (&memory_read_packet_config); | |
437 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
438 | extra buffer size argument before the memory read size can be | |
439 | increased beyond PBUFSIZ. */ | |
440 | if (size > PBUFSIZ) | |
441 | size = PBUFSIZ; | |
442 | return size; | |
443 | } | |
444 | ||
445 | /* Register packet size initialization. Since the bounds change when | |
446 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
447 | be multi-arched. */ | |
448 | ||
449 | static void | |
450 | register_remote_packet_sizes (void) | |
451 | { | |
452 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
453 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
454 | } | |
455 | ||
456 | static void | |
457 | build_remote_packet_sizes (void) | |
458 | { | |
c2d11a7d JM |
459 | /* Default maximum number of characters in a packet body. Many |
460 | remote stubs have a hardwired buffer size of 400 bytes | |
461 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
462 | as the maximum packet-size to ensure that the packet and an extra | |
463 | NUL character can always fit in the buffer. This stops GDB | |
464 | trashing stubs that try to squeeze an extra NUL into what is | |
465 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
466 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
467 | /* Should REGISTER_BYTES needs more space than the default, adjust |
468 | the size accordingly. Remember that each byte is encoded as two | |
469 | characters. 32 is the overhead for the packet header / | |
470 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
471 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
472 | little. */ | |
473 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
474 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
475 | ||
476 | /* This one is filled in when a ``g'' packet is received. */ | |
477 | actual_register_packet_size = 0; | |
478 | } | |
479 | \f | |
5a2468f5 JM |
480 | /* Generic configuration support for packets the stub optionally |
481 | supports. Allows the user to specify the use of the packet as well | |
482 | as allowing GDB to auto-detect support in the remote stub. */ | |
483 | ||
484 | enum packet_support | |
485 | { | |
486 | PACKET_SUPPORT_UNKNOWN = 0, | |
487 | PACKET_ENABLE, | |
488 | PACKET_DISABLE | |
489 | }; | |
490 | ||
5a2468f5 JM |
491 | struct packet_config |
492 | { | |
5a2468f5 JM |
493 | char *name; |
494 | char *title; | |
8e248173 | 495 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
496 | enum packet_support support; |
497 | }; | |
498 | ||
d471ea57 AC |
499 | /* Analyze a packet's return value and update the packet config |
500 | accordingly. */ | |
501 | ||
502 | enum packet_result | |
503 | { | |
504 | PACKET_ERROR, | |
505 | PACKET_OK, | |
506 | PACKET_UNKNOWN | |
507 | }; | |
508 | ||
5a2468f5 | 509 | static void |
d471ea57 | 510 | update_packet_config (struct packet_config *config) |
5a2468f5 | 511 | { |
d471ea57 AC |
512 | switch (config->detect) |
513 | { | |
514 | case CMD_AUTO_BOOLEAN_TRUE: | |
515 | config->support = PACKET_ENABLE; | |
516 | break; | |
517 | case CMD_AUTO_BOOLEAN_FALSE: | |
518 | config->support = PACKET_DISABLE; | |
519 | break; | |
520 | case CMD_AUTO_BOOLEAN_AUTO: | |
521 | config->support = PACKET_SUPPORT_UNKNOWN; | |
522 | break; | |
523 | } | |
5a2468f5 JM |
524 | } |
525 | ||
526 | static void | |
fba45db2 | 527 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
528 | { |
529 | char *support = "internal-error"; | |
530 | switch (config->support) | |
531 | { | |
532 | case PACKET_ENABLE: | |
533 | support = "enabled"; | |
534 | break; | |
535 | case PACKET_DISABLE: | |
536 | support = "disabled"; | |
537 | break; | |
538 | case PACKET_SUPPORT_UNKNOWN: | |
539 | support = "unknown"; | |
540 | break; | |
541 | } | |
542 | switch (config->detect) | |
543 | { | |
8e248173 | 544 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
545 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
546 | config->name, config->title, support); | |
547 | break; | |
8e248173 AC |
548 | case CMD_AUTO_BOOLEAN_TRUE: |
549 | case CMD_AUTO_BOOLEAN_FALSE: | |
550 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 551 | config->name, config->title, support); |
8e248173 | 552 | break; |
5a2468f5 JM |
553 | } |
554 | } | |
555 | ||
556 | static void | |
d471ea57 AC |
557 | add_packet_config_cmd (struct packet_config *config, |
558 | char *name, | |
559 | char *title, | |
560 | void (*set_func) (char *args, int from_tty, | |
561 | struct cmd_list_element * | |
562 | c), | |
563 | void (*show_func) (char *name, | |
564 | int from_tty), | |
565 | struct cmd_list_element **set_remote_list, | |
566 | struct cmd_list_element **show_remote_list, | |
567 | int legacy) | |
568 | { | |
569 | struct cmd_list_element *set_cmd; | |
570 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
571 | char *set_doc; |
572 | char *show_doc; | |
d471ea57 | 573 | char *cmd_name; |
5a2468f5 JM |
574 | config->name = name; |
575 | config->title = title; | |
8e248173 AC |
576 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
577 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
578 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
579 | name, title); | |
580 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
581 | name, title); | |
d471ea57 | 582 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 583 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
584 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
585 | &config->detect, set_doc, | |
586 | set_remote_list); | |
587 | set_cmd->function.sfunc = set_func; | |
588 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
589 | show_remote_list); | |
590 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
591 | if (legacy) | |
592 | { | |
593 | char *legacy_name; | |
76995688 | 594 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
595 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
596 | set_remote_list); | |
597 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
598 | show_remote_list); | |
599 | } | |
5a2468f5 JM |
600 | } |
601 | ||
d471ea57 AC |
602 | static enum packet_result |
603 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 604 | { |
d471ea57 | 605 | if (buf[0] != '\0') |
5a2468f5 | 606 | { |
d471ea57 AC |
607 | /* The stub recognized the packet request. Check that the |
608 | operation succeeded. */ | |
609 | switch (config->support) | |
610 | { | |
611 | case PACKET_SUPPORT_UNKNOWN: | |
612 | if (remote_debug) | |
613 | fprintf_unfiltered (gdb_stdlog, | |
614 | "Packet %s (%s) is supported\n", | |
615 | config->name, config->title); | |
616 | config->support = PACKET_ENABLE; | |
617 | break; | |
618 | case PACKET_DISABLE: | |
619 | internal_error ("packet_ok: attempt to use a disabled packet"); | |
620 | break; | |
621 | case PACKET_ENABLE: | |
622 | break; | |
623 | } | |
624 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
625 | /* "OK" - definitly OK. */ | |
626 | return PACKET_OK; | |
627 | if (buf[0] == 'E' | |
628 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
629 | && buf[3] == '\0') | |
630 | /* "Enn" - definitly an error. */ | |
631 | return PACKET_ERROR; | |
632 | /* The packet may or may not be OK. Just assume it is */ | |
633 | return PACKET_OK; | |
634 | } | |
635 | else | |
636 | { | |
637 | /* The stub does not support the packet. */ | |
638 | switch (config->support) | |
639 | { | |
640 | case PACKET_ENABLE: | |
641 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
642 | /* If the stub previously indicated that the packet was | |
643 | supported then there is a protocol error.. */ | |
644 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
645 | config->name, config->title); | |
646 | else | |
647 | /* The user set it wrong. */ | |
648 | error ("Enabled packet %s (%s) not recognized by stub", | |
649 | config->name, config->title); | |
650 | break; | |
651 | case PACKET_SUPPORT_UNKNOWN: | |
652 | if (remote_debug) | |
653 | fprintf_unfiltered (gdb_stdlog, | |
654 | "Packet %s (%s) is NOT supported\n", | |
655 | config->name, config->title); | |
656 | config->support = PACKET_DISABLE; | |
657 | break; | |
658 | case PACKET_DISABLE: | |
659 | break; | |
660 | } | |
661 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
662 | } |
663 | } | |
664 | ||
665 | /* Should we try the 'P' (set register) request? */ | |
666 | ||
667 | static struct packet_config remote_protocol_P; | |
668 | ||
669 | static void | |
fba45db2 KB |
670 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
671 | struct cmd_list_element *c) | |
5a2468f5 | 672 | { |
d471ea57 | 673 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
674 | } |
675 | ||
676 | static void | |
fba45db2 | 677 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
678 | { |
679 | show_packet_config_cmd (&remote_protocol_P); | |
680 | } | |
681 | ||
d471ea57 AC |
682 | /* Should we try one of the 'Z' requests? */ |
683 | ||
684 | enum Z_packet_type | |
685 | { | |
686 | Z_PACKET_SOFTWARE_BP, | |
687 | Z_PACKET_HARDWARE_BP, | |
688 | Z_PACKET_WRITE_WP, | |
689 | Z_PACKET_READ_WP, | |
690 | Z_PACKET_ACCESS_WP, | |
691 | NR_Z_PACKET_TYPES | |
692 | }; | |
96baa820 | 693 | |
d471ea57 AC |
694 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
695 | ||
696 | /* FIXME: Instead of having all these boiler plate functions, the | |
697 | command callback should include a context argument. */ | |
698 | ||
699 | static void | |
700 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
701 | struct cmd_list_element *c) | |
702 | { | |
703 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
704 | } | |
705 | ||
706 | static void | |
707 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
708 | { | |
709 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
710 | } | |
711 | ||
712 | static void | |
713 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
714 | struct cmd_list_element *c) | |
715 | { | |
716 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
717 | } | |
718 | ||
719 | static void | |
720 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
721 | { | |
722 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
723 | } | |
724 | ||
725 | static void | |
726 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
727 | struct cmd_list_element *c) | |
728 | { | |
729 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
730 | } | |
731 | ||
732 | static void | |
733 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
734 | { | |
735 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
736 | } | |
737 | ||
738 | static void | |
739 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
740 | struct cmd_list_element *c) | |
741 | { | |
742 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
743 | } | |
744 | ||
745 | static void | |
746 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
747 | { | |
748 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
749 | } | |
750 | ||
751 | static void | |
752 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
753 | struct cmd_list_element *c) | |
754 | { | |
755 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
756 | } | |
757 | ||
758 | static void | |
759 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
760 | { | |
761 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
762 | } | |
763 | ||
764 | /* For compatibility with older distributions. Provide a ``set remote | |
765 | Z-packet ...'' command that updates all the Z packet types. */ | |
766 | ||
767 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
768 | |
769 | static void | |
fba45db2 KB |
770 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
771 | struct cmd_list_element *c) | |
96baa820 | 772 | { |
d471ea57 AC |
773 | int i; |
774 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
775 | { | |
776 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
777 | update_packet_config (&remote_protocol_Z[i]); | |
778 | } | |
96baa820 JM |
779 | } |
780 | ||
781 | static void | |
fba45db2 | 782 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 783 | { |
d471ea57 AC |
784 | int i; |
785 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
786 | { | |
787 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
788 | } | |
96baa820 JM |
789 | } |
790 | ||
791 | /* Should we try the 'X' (remote binary download) packet? | |
792 | ||
793 | This variable (available to the user via "set remote X-packet") | |
794 | dictates whether downloads are sent in binary (via the 'X' packet). | |
795 | We assume that the stub can, and attempt to do it. This will be | |
796 | cleared if the stub does not understand it. This switch is still | |
797 | needed, though in cases when the packet is supported in the stub, | |
798 | but the connection does not allow it (i.e., 7-bit serial connection | |
799 | only). */ | |
800 | ||
801 | static struct packet_config remote_protocol_binary_download; | |
802 | ||
9d1f7ab2 MS |
803 | /* Should we try the 'ThreadInfo' query packet? |
804 | ||
805 | This variable (NOT available to the user: auto-detect only!) | |
806 | determines whether GDB will use the new, simpler "ThreadInfo" | |
807 | query or the older, more complex syntax for thread queries. | |
808 | This is an auto-detect variable (set to true at each connect, | |
809 | and set to false when the target fails to recognize it). */ | |
810 | ||
811 | static int use_threadinfo_query; | |
812 | static int use_threadextra_query; | |
813 | ||
96baa820 JM |
814 | static void |
815 | set_remote_protocol_binary_download_cmd (char *args, | |
816 | int from_tty, | |
817 | struct cmd_list_element *c) | |
818 | { | |
d471ea57 | 819 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
820 | } |
821 | ||
822 | static void | |
823 | show_remote_protocol_binary_download_cmd (char *args, | |
824 | int from_tty) | |
825 | { | |
826 | show_packet_config_cmd (&remote_protocol_binary_download); | |
827 | } | |
828 | ||
c906108c | 829 | |
43ff13b4 JM |
830 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
831 | PTR sigint_remote_twice_token; | |
832 | PTR sigint_remote_token; | |
833 | ||
c906108c SS |
834 | /* These are pointers to hook functions that may be set in order to |
835 | modify resume/wait behavior for a particular architecture. */ | |
836 | ||
507f3c78 KB |
837 | void (*target_resume_hook) (void); |
838 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
839 | \f |
840 | ||
c5aa993b | 841 | |
c906108c SS |
842 | /* These are the threads which we last sent to the remote system. |
843 | -1 for all or -2 for not sent yet. */ | |
844 | static int general_thread; | |
cce74817 | 845 | static int continue_thread; |
c906108c SS |
846 | |
847 | /* Call this function as a result of | |
848 | 1) A halt indication (T packet) containing a thread id | |
849 | 2) A direct query of currthread | |
850 | 3) Successful execution of set thread | |
851 | */ | |
852 | ||
853 | static void | |
fba45db2 | 854 | record_currthread (int currthread) |
c906108c | 855 | { |
c906108c | 856 | general_thread = currthread; |
cce74817 | 857 | |
c906108c SS |
858 | /* If this is a new thread, add it to GDB's thread list. |
859 | If we leave it up to WFI to do this, bad things will happen. */ | |
860 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
861 | { |
862 | add_thread (currthread); | |
8b93c638 JM |
863 | #ifdef UI_OUT |
864 | ui_out_text (uiout, "[New "); | |
865 | ui_out_text (uiout, target_pid_to_str (currthread)); | |
866 | ui_out_text (uiout, "]\n"); | |
867 | #else | |
0f71a2f6 | 868 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); |
8b93c638 | 869 | #endif |
0f71a2f6 | 870 | } |
c906108c SS |
871 | } |
872 | ||
873 | #define MAGIC_NULL_PID 42000 | |
874 | ||
875 | static void | |
fba45db2 | 876 | set_thread (int th, int gen) |
c906108c | 877 | { |
085dd6e6 | 878 | char *buf = alloca (PBUFSIZ); |
cce74817 | 879 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
880 | |
881 | if (state == th) | |
882 | return; | |
883 | ||
884 | buf[0] = 'H'; | |
885 | buf[1] = gen ? 'g' : 'c'; | |
886 | if (th == MAGIC_NULL_PID) | |
887 | { | |
888 | buf[2] = '0'; | |
889 | buf[3] = '\0'; | |
890 | } | |
891 | else if (th < 0) | |
892 | sprintf (&buf[2], "-%x", -th); | |
893 | else | |
894 | sprintf (&buf[2], "%x", th); | |
895 | putpkt (buf); | |
c2d11a7d | 896 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 897 | if (gen) |
c5aa993b | 898 | general_thread = th; |
c906108c | 899 | else |
cce74817 | 900 | continue_thread = th; |
c906108c SS |
901 | } |
902 | \f | |
903 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
904 | ||
905 | static int | |
fba45db2 | 906 | remote_thread_alive (int tid) |
c906108c | 907 | { |
cce74817 | 908 | char buf[16]; |
c906108c | 909 | |
cce74817 JM |
910 | if (tid < 0) |
911 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 912 | else |
cce74817 | 913 | sprintf (buf, "T%08x", tid); |
c906108c | 914 | putpkt (buf); |
c2d11a7d | 915 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
916 | return (buf[0] == 'O' && buf[1] == 'K'); |
917 | } | |
918 | ||
919 | /* About these extended threadlist and threadinfo packets. They are | |
920 | variable length packets but, the fields within them are often fixed | |
921 | length. They are redundent enough to send over UDP as is the | |
922 | remote protocol in general. There is a matching unit test module | |
923 | in libstub. */ | |
924 | ||
cce74817 JM |
925 | #define OPAQUETHREADBYTES 8 |
926 | ||
927 | /* a 64 bit opaque identifier */ | |
928 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
929 | ||
930 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
931 | protocol encoding, and remote.c. it is not particularly changable */ | |
932 | ||
933 | /* Right now, the internal structure is int. We want it to be bigger. | |
934 | Plan to fix this. | |
c5aa993b | 935 | */ |
cce74817 | 936 | |
c5aa993b | 937 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 938 | |
9d1f7ab2 | 939 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
940 | equivalint to the reply of the remote threadinfo packet */ |
941 | ||
942 | struct gdb_ext_thread_info | |
c5aa993b JM |
943 | { |
944 | threadref threadid; /* External form of thread reference */ | |
945 | int active; /* Has state interesting to GDB? , regs, stack */ | |
946 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
947 | char shortname[32]; /* To be used to name threads */ | |
948 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
949 | }; | |
cce74817 JM |
950 | |
951 | /* The volume of remote transfers can be limited by submitting | |
952 | a mask containing bits specifying the desired information. | |
953 | Use a union of these values as the 'selection' parameter to | |
954 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 955 | */ |
cce74817 JM |
956 | |
957 | #define TAG_THREADID 1 | |
958 | #define TAG_EXISTS 2 | |
959 | #define TAG_DISPLAY 4 | |
960 | #define TAG_THREADNAME 8 | |
c5aa993b | 961 | #define TAG_MOREDISPLAY 16 |
cce74817 | 962 | |
c906108c SS |
963 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
964 | ||
a14ed312 | 965 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 966 | |
a14ed312 | 967 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 968 | |
a14ed312 | 969 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 970 | |
a14ed312 | 971 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 972 | |
a14ed312 | 973 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 974 | |
a14ed312 | 975 | static char *pack_int (char *buf, int value); |
cce74817 | 976 | |
a14ed312 | 977 | static char *unpack_int (char *buf, int *value); |
cce74817 | 978 | |
a14ed312 | 979 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 980 | |
a14ed312 | 981 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 982 | |
a14ed312 | 983 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 984 | |
a14ed312 | 985 | void int_to_threadref (threadref * id, int value); |
cce74817 | 986 | |
a14ed312 | 987 | static int threadref_to_int (threadref * ref); |
cce74817 | 988 | |
a14ed312 | 989 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 990 | |
a14ed312 | 991 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 992 | |
a14ed312 | 993 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 994 | |
a14ed312 KB |
995 | static int remote_unpack_thread_info_response (char *pkt, |
996 | threadref * expectedref, | |
997 | struct gdb_ext_thread_info | |
998 | *info); | |
cce74817 JM |
999 | |
1000 | ||
a14ed312 KB |
1001 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1002 | struct gdb_ext_thread_info *info); | |
cce74817 | 1003 | |
a14ed312 KB |
1004 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1005 | int selection, | |
1006 | struct gdb_ext_thread_info *info); | |
cce74817 | 1007 | |
a14ed312 KB |
1008 | static char *pack_threadlist_request (char *pkt, int startflag, |
1009 | int threadcount, | |
1010 | threadref * nextthread); | |
cce74817 | 1011 | |
a14ed312 KB |
1012 | static int parse_threadlist_response (char *pkt, |
1013 | int result_limit, | |
1014 | threadref * original_echo, | |
1015 | threadref * resultlist, int *doneflag); | |
cce74817 | 1016 | |
a14ed312 KB |
1017 | static int remote_get_threadlist (int startflag, |
1018 | threadref * nextthread, | |
1019 | int result_limit, | |
1020 | int *done, | |
1021 | int *result_count, threadref * threadlist); | |
cce74817 | 1022 | |
c5aa993b | 1023 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1024 | |
a14ed312 KB |
1025 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1026 | void *context, int looplimit); | |
cce74817 | 1027 | |
a14ed312 | 1028 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1029 | |
c906108c SS |
1030 | /* encode 64 bits in 16 chars of hex */ |
1031 | ||
1032 | static const char hexchars[] = "0123456789abcdef"; | |
1033 | ||
1034 | static int | |
fba45db2 | 1035 | ishex (int ch, int *val) |
c906108c SS |
1036 | { |
1037 | if ((ch >= 'a') && (ch <= 'f')) | |
1038 | { | |
1039 | *val = ch - 'a' + 10; | |
1040 | return 1; | |
1041 | } | |
1042 | if ((ch >= 'A') && (ch <= 'F')) | |
1043 | { | |
1044 | *val = ch - 'A' + 10; | |
1045 | return 1; | |
1046 | } | |
1047 | if ((ch >= '0') && (ch <= '9')) | |
1048 | { | |
1049 | *val = ch - '0'; | |
1050 | return 1; | |
1051 | } | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | static int | |
fba45db2 | 1056 | stubhex (int ch) |
c906108c SS |
1057 | { |
1058 | if (ch >= 'a' && ch <= 'f') | |
1059 | return ch - 'a' + 10; | |
1060 | if (ch >= '0' && ch <= '9') | |
1061 | return ch - '0'; | |
1062 | if (ch >= 'A' && ch <= 'F') | |
1063 | return ch - 'A' + 10; | |
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | static int | |
fba45db2 | 1068 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1069 | { |
1070 | int nibble; | |
1071 | int retval = 0; | |
1072 | ||
1073 | while (fieldlength) | |
1074 | { | |
1075 | nibble = stubhex (*buff++); | |
1076 | retval |= nibble; | |
1077 | fieldlength--; | |
1078 | if (fieldlength) | |
1079 | retval = retval << 4; | |
1080 | } | |
1081 | return retval; | |
1082 | } | |
1083 | ||
1084 | char * | |
fba45db2 KB |
1085 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1086 | int *result) | |
c906108c SS |
1087 | { |
1088 | int nibble; | |
1089 | int retval = 0; | |
1090 | ||
1091 | while (ishex (*buff, &nibble)) | |
1092 | { | |
1093 | buff++; | |
1094 | retval = retval << 4; | |
1095 | retval |= nibble & 0x0f; | |
1096 | } | |
1097 | *result = retval; | |
1098 | return buff; | |
1099 | } | |
1100 | ||
1101 | static char * | |
fba45db2 | 1102 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1103 | { |
1104 | ishex (*buf++, val); | |
1105 | return buf; | |
1106 | } | |
1107 | ||
1108 | static char * | |
fba45db2 | 1109 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1110 | { |
1111 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1112 | return buf; | |
1113 | } | |
1114 | ||
1115 | static char * | |
fba45db2 | 1116 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1117 | { |
1118 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1119 | *pkt++ = hexchars[(byte & 0xf)]; | |
1120 | return pkt; | |
1121 | } | |
1122 | ||
1123 | static char * | |
fba45db2 | 1124 | unpack_byte (char *buf, int *value) |
c906108c SS |
1125 | { |
1126 | *value = stub_unpack_int (buf, 2); | |
1127 | return buf + 2; | |
1128 | } | |
1129 | ||
1130 | static char * | |
fba45db2 | 1131 | pack_int (char *buf, int value) |
c906108c SS |
1132 | { |
1133 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1134 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1135 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1136 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1137 | return buf; | |
1138 | } | |
1139 | ||
1140 | static char * | |
fba45db2 | 1141 | unpack_int (char *buf, int *value) |
c906108c SS |
1142 | { |
1143 | *value = stub_unpack_int (buf, 8); | |
1144 | return buf + 8; | |
1145 | } | |
1146 | ||
c5aa993b | 1147 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1148 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1149 | |
1150 | static char * | |
fba45db2 | 1151 | pack_string (char *pkt, char *string) |
c906108c SS |
1152 | { |
1153 | char ch; | |
1154 | int len; | |
1155 | ||
1156 | len = strlen (string); | |
1157 | if (len > 200) | |
1158 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1159 | pkt = pack_hex_byte (pkt, len); | |
1160 | while (len-- > 0) | |
1161 | { | |
1162 | ch = *string++; | |
1163 | if ((ch == '\0') || (ch == '#')) | |
1164 | ch = '*'; /* Protect encapsulation */ | |
1165 | *pkt++ = ch; | |
1166 | } | |
1167 | return pkt; | |
1168 | } | |
1169 | #endif /* 0 (unused) */ | |
1170 | ||
1171 | static char * | |
fba45db2 | 1172 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1173 | { |
1174 | while (length--) | |
1175 | *dest++ = *src++; | |
1176 | *dest = '\0'; | |
1177 | return src; | |
1178 | } | |
1179 | ||
1180 | static char * | |
fba45db2 | 1181 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1182 | { |
1183 | char *limit; | |
1184 | unsigned char *altid; | |
1185 | ||
1186 | altid = (unsigned char *) id; | |
1187 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1188 | while (pkt < limit) | |
1189 | pkt = pack_hex_byte (pkt, *altid++); | |
1190 | return pkt; | |
1191 | } | |
1192 | ||
1193 | ||
1194 | static char * | |
fba45db2 | 1195 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1196 | { |
1197 | char *altref; | |
1198 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1199 | int x, y; | |
1200 | ||
1201 | altref = (char *) id; | |
1202 | ||
1203 | while (inbuf < limit) | |
1204 | { | |
1205 | x = stubhex (*inbuf++); | |
1206 | y = stubhex (*inbuf++); | |
1207 | *altref++ = (x << 4) | y; | |
1208 | } | |
1209 | return inbuf; | |
1210 | } | |
1211 | ||
1212 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1213 | ints. This is due to a mismatch of specifications. We would like | |
1214 | to use 64bit thread references internally. This is an adapter | |
1215 | function. */ | |
1216 | ||
1217 | void | |
fba45db2 | 1218 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1219 | { |
1220 | unsigned char *scan; | |
1221 | ||
1222 | scan = (unsigned char *) id; | |
1223 | { | |
1224 | int i = 4; | |
1225 | while (i--) | |
1226 | *scan++ = 0; | |
1227 | } | |
1228 | *scan++ = (value >> 24) & 0xff; | |
1229 | *scan++ = (value >> 16) & 0xff; | |
1230 | *scan++ = (value >> 8) & 0xff; | |
1231 | *scan++ = (value & 0xff); | |
1232 | } | |
1233 | ||
1234 | static int | |
fba45db2 | 1235 | threadref_to_int (threadref *ref) |
c906108c SS |
1236 | { |
1237 | int i, value = 0; | |
1238 | unsigned char *scan; | |
1239 | ||
1240 | scan = (char *) ref; | |
1241 | scan += 4; | |
1242 | i = 4; | |
1243 | while (i-- > 0) | |
1244 | value = (value << 8) | ((*scan++) & 0xff); | |
1245 | return value; | |
1246 | } | |
1247 | ||
1248 | static void | |
fba45db2 | 1249 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1250 | { |
1251 | int i; | |
1252 | unsigned char *csrc, *cdest; | |
1253 | ||
1254 | csrc = (unsigned char *) src; | |
1255 | cdest = (unsigned char *) dest; | |
1256 | i = 8; | |
1257 | while (i--) | |
1258 | *cdest++ = *csrc++; | |
1259 | } | |
1260 | ||
1261 | static int | |
fba45db2 | 1262 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1263 | { |
1264 | /* things are broken right now, so just assume we got a match */ | |
1265 | #if 0 | |
1266 | unsigned char *srcp, *destp; | |
1267 | int i, result; | |
1268 | srcp = (char *) src; | |
1269 | destp = (char *) dest; | |
1270 | ||
1271 | result = 1; | |
1272 | while (i-- > 0) | |
1273 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1274 | return result; | |
1275 | #endif | |
1276 | return 1; | |
1277 | } | |
1278 | ||
1279 | /* | |
c5aa993b JM |
1280 | threadid:1, # always request threadid |
1281 | context_exists:2, | |
1282 | display:4, | |
1283 | unique_name:8, | |
1284 | more_display:16 | |
1285 | */ | |
c906108c SS |
1286 | |
1287 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1288 | ||
1289 | static char * | |
fba45db2 | 1290 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1291 | { |
1292 | *pkt++ = 'q'; /* Info Query */ | |
1293 | *pkt++ = 'P'; /* process or thread info */ | |
1294 | pkt = pack_int (pkt, mode); /* mode */ | |
1295 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1296 | *pkt = '\0'; /* terminate */ | |
1297 | return pkt; | |
1298 | } | |
1299 | ||
1300 | /* These values tag the fields in a thread info response packet */ | |
1301 | /* Tagging the fields allows us to request specific fields and to | |
1302 | add more fields as time goes by */ | |
1303 | ||
c5aa993b JM |
1304 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1305 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1306 | fetch registers and its stack */ | |
1307 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1308 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1309 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1310 | the process */ | |
c906108c SS |
1311 | |
1312 | static int | |
fba45db2 KB |
1313 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1314 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1315 | { |
1316 | int mask, length; | |
1317 | unsigned int tag; | |
1318 | threadref ref; | |
c5aa993b | 1319 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1320 | int retval = 1; |
1321 | ||
1322 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1323 | info->active = 0; | |
1324 | info->display[0] = '\0'; | |
1325 | info->shortname[0] = '\0'; | |
1326 | info->more_display[0] = '\0'; | |
1327 | ||
1328 | /* Assume the characters indicating the packet type have been stripped */ | |
1329 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1330 | pkt = unpack_threadid (pkt, &ref); | |
1331 | ||
1332 | if (mask == 0) | |
1333 | warning ("Incomplete response to threadinfo request\n"); | |
1334 | if (!threadmatch (&ref, expectedref)) | |
1335 | { /* This is an answer to a different request */ | |
1336 | warning ("ERROR RMT Thread info mismatch\n"); | |
1337 | return 0; | |
1338 | } | |
1339 | copy_threadref (&info->threadid, &ref); | |
1340 | ||
1341 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1342 | ||
c5aa993b | 1343 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1344 | { |
1345 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1346 | pkt = unpack_byte (pkt, &length); /* length */ | |
1347 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1348 | { | |
1349 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1350 | retval = 0; | |
1351 | break; | |
1352 | } | |
1353 | if (tag == TAG_THREADID) | |
1354 | { | |
1355 | if (length != 16) | |
1356 | { | |
1357 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1358 | retval = 0; | |
1359 | break; | |
1360 | } | |
1361 | pkt = unpack_threadid (pkt, &ref); | |
1362 | mask = mask & ~TAG_THREADID; | |
1363 | continue; | |
1364 | } | |
1365 | if (tag == TAG_EXISTS) | |
1366 | { | |
1367 | info->active = stub_unpack_int (pkt, length); | |
1368 | pkt += length; | |
1369 | mask = mask & ~(TAG_EXISTS); | |
1370 | if (length > 8) | |
1371 | { | |
1372 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1373 | retval = 0; | |
1374 | break; | |
1375 | } | |
1376 | continue; | |
1377 | } | |
1378 | if (tag == TAG_THREADNAME) | |
1379 | { | |
1380 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1381 | mask = mask & ~TAG_THREADNAME; | |
1382 | continue; | |
1383 | } | |
1384 | if (tag == TAG_DISPLAY) | |
1385 | { | |
1386 | pkt = unpack_string (pkt, &info->display[0], length); | |
1387 | mask = mask & ~TAG_DISPLAY; | |
1388 | continue; | |
1389 | } | |
1390 | if (tag == TAG_MOREDISPLAY) | |
1391 | { | |
1392 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1393 | mask = mask & ~TAG_MOREDISPLAY; | |
1394 | continue; | |
1395 | } | |
1396 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1397 | break; /* Not a tag we know about */ | |
1398 | } | |
1399 | return retval; | |
1400 | } | |
1401 | ||
1402 | static int | |
fba45db2 KB |
1403 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1404 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1405 | { |
1406 | int result; | |
085dd6e6 | 1407 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1408 | |
1409 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1410 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1411 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1412 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1413 | info); | |
1414 | return result; | |
1415 | } | |
1416 | ||
1417 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1418 | representation of a threadid. */ | |
1419 | ||
1420 | static int | |
fba45db2 KB |
1421 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1422 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1423 | { |
1424 | threadref lclref; | |
1425 | ||
1426 | int_to_threadref (&lclref, *ref); | |
1427 | return remote_get_threadinfo (&lclref, selection, info); | |
1428 | } | |
1429 | ||
1430 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1431 | ||
1432 | static char * | |
fba45db2 KB |
1433 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1434 | threadref *nextthread) | |
c906108c SS |
1435 | { |
1436 | *pkt++ = 'q'; /* info query packet */ | |
1437 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1438 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1439 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1440 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1441 | *pkt = '\0'; | |
1442 | return pkt; | |
1443 | } | |
1444 | ||
1445 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1446 | ||
1447 | static int | |
fba45db2 KB |
1448 | parse_threadlist_response (char *pkt, int result_limit, |
1449 | threadref *original_echo, threadref *resultlist, | |
1450 | int *doneflag) | |
c906108c SS |
1451 | { |
1452 | char *limit; | |
1453 | int count, resultcount, done; | |
1454 | ||
1455 | resultcount = 0; | |
1456 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1457 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1458 | pkt = unpack_byte (pkt, &count); /* count field */ |
1459 | pkt = unpack_nibble (pkt, &done); | |
1460 | /* The first threadid is the argument threadid. */ | |
1461 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1462 | while ((count-- > 0) && (pkt < limit)) | |
1463 | { | |
1464 | pkt = unpack_threadid (pkt, resultlist++); | |
1465 | if (resultcount++ >= result_limit) | |
1466 | break; | |
1467 | } | |
1468 | if (doneflag) | |
1469 | *doneflag = done; | |
1470 | return resultcount; | |
1471 | } | |
1472 | ||
1473 | static int | |
fba45db2 KB |
1474 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1475 | int *done, int *result_count, threadref *threadlist) | |
c906108c SS |
1476 | { |
1477 | static threadref echo_nextthread; | |
085dd6e6 JM |
1478 | char *threadlist_packet = alloca (PBUFSIZ); |
1479 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1480 | int result = 1; |
1481 | ||
1482 | /* Trancate result limit to be smaller than the packet size */ | |
1483 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1484 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1485 | ||
1486 | pack_threadlist_request (threadlist_packet, | |
1487 | startflag, result_limit, nextthread); | |
1488 | putpkt (threadlist_packet); | |
c2d11a7d | 1489 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1490 | |
1491 | *result_count = | |
1492 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1493 | threadlist, done); | |
1494 | ||
1495 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1496 | { | |
1497 | /* FIXME: This is a good reason to drop the packet */ | |
1498 | /* Possably, there is a duplicate response */ | |
1499 | /* Possabilities : | |
1500 | retransmit immediatly - race conditions | |
1501 | retransmit after timeout - yes | |
1502 | exit | |
1503 | wait for packet, then exit | |
1504 | */ | |
1505 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1506 | return 0; /* I choose simply exiting */ | |
1507 | } | |
1508 | if (*result_count <= 0) | |
1509 | { | |
1510 | if (*done != 1) | |
1511 | { | |
1512 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1513 | result = 0; | |
1514 | } | |
1515 | return result; /* break; */ | |
1516 | } | |
1517 | if (*result_count > result_limit) | |
1518 | { | |
1519 | *result_count = 0; | |
1520 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1521 | return 0; | |
1522 | } | |
1523 | return result; | |
1524 | } | |
1525 | ||
1526 | /* This is the interface between remote and threads, remotes upper interface */ | |
1527 | ||
1528 | /* remote_find_new_threads retrieves the thread list and for each | |
1529 | thread in the list, looks up the thread in GDB's internal list, | |
1530 | ading the thread if it does not already exist. This involves | |
1531 | getting partial thread lists from the remote target so, polling the | |
1532 | quit_flag is required. */ | |
1533 | ||
1534 | ||
1535 | /* About this many threadisds fit in a packet. */ | |
1536 | ||
1537 | #define MAXTHREADLISTRESULTS 32 | |
1538 | ||
1539 | static int | |
fba45db2 KB |
1540 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1541 | int looplimit) | |
c906108c SS |
1542 | { |
1543 | int done, i, result_count; | |
1544 | int startflag = 1; | |
1545 | int result = 1; | |
1546 | int loopcount = 0; | |
1547 | static threadref nextthread; | |
1548 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1549 | ||
1550 | done = 0; | |
1551 | while (!done) | |
1552 | { | |
1553 | if (loopcount++ > looplimit) | |
1554 | { | |
1555 | result = 0; | |
1556 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1557 | break; | |
1558 | } | |
1559 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1560 | &done, &result_count, resultthreadlist)) | |
1561 | { | |
1562 | result = 0; | |
1563 | break; | |
1564 | } | |
1565 | /* clear for later iterations */ | |
1566 | startflag = 0; | |
1567 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1568 | if (result_count >= 1) | |
1569 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1570 | i = 0; | |
1571 | while (result_count--) | |
1572 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1573 | break; | |
1574 | } | |
1575 | return result; | |
1576 | } | |
1577 | ||
1578 | static int | |
fba45db2 | 1579 | remote_newthread_step (threadref *ref, void *context) |
c906108c SS |
1580 | { |
1581 | int pid; | |
1582 | ||
1583 | pid = threadref_to_int (ref); | |
1584 | if (!in_thread_list (pid)) | |
1585 | add_thread (pid); | |
1586 | return 1; /* continue iterator */ | |
1587 | } | |
1588 | ||
1589 | #define CRAZY_MAX_THREADS 1000 | |
1590 | ||
1591 | static int | |
fba45db2 | 1592 | remote_current_thread (int oldpid) |
c906108c | 1593 | { |
085dd6e6 | 1594 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1595 | |
1596 | putpkt ("qC"); | |
c2d11a7d | 1597 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1598 | if (buf[0] == 'Q' && buf[1] == 'C') |
1599 | return strtol (&buf[2], NULL, 16); | |
1600 | else | |
1601 | return oldpid; | |
1602 | } | |
1603 | ||
9d1f7ab2 MS |
1604 | /* Find new threads for info threads command. |
1605 | * Original version, using John Metzler's thread protocol. | |
1606 | */ | |
cce74817 JM |
1607 | |
1608 | static void | |
fba45db2 | 1609 | remote_find_new_threads (void) |
c906108c | 1610 | { |
c5aa993b JM |
1611 | remote_threadlist_iterator (remote_newthread_step, 0, |
1612 | CRAZY_MAX_THREADS); | |
c906108c SS |
1613 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1614 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1615 | } |
1616 | ||
9d1f7ab2 MS |
1617 | /* |
1618 | * Find all threads for info threads command. | |
1619 | * Uses new thread protocol contributed by Cisco. | |
1620 | * Falls back and attempts to use the older method (above) | |
1621 | * if the target doesn't respond to the new method. | |
1622 | */ | |
1623 | ||
0f71a2f6 JM |
1624 | static void |
1625 | remote_threads_info (void) | |
1626 | { | |
085dd6e6 JM |
1627 | char *buf = alloca (PBUFSIZ); |
1628 | char *bufp; | |
0f71a2f6 JM |
1629 | int tid; |
1630 | ||
1631 | if (remote_desc == 0) /* paranoia */ | |
1632 | error ("Command can only be used when connected to the remote target."); | |
1633 | ||
9d1f7ab2 MS |
1634 | if (use_threadinfo_query) |
1635 | { | |
1636 | putpkt ("qfThreadInfo"); | |
1637 | bufp = buf; | |
1638 | getpkt (bufp, PBUFSIZ, 0); | |
1639 | if (bufp[0] != '\0') /* q packet recognized */ | |
1640 | { | |
1641 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1642 | { | |
1643 | do | |
1644 | { | |
1645 | tid = strtol (bufp, &bufp, 16); | |
1646 | if (tid != 0 && !in_thread_list (tid)) | |
1647 | add_thread (tid); | |
1648 | } | |
1649 | while (*bufp++ == ','); /* comma-separated list */ | |
1650 | putpkt ("qsThreadInfo"); | |
1651 | bufp = buf; | |
1652 | getpkt (bufp, PBUFSIZ, 0); | |
1653 | } | |
1654 | return; /* done */ | |
1655 | } | |
1656 | } | |
1657 | ||
1658 | /* Else fall back to old method based on jmetzler protocol. */ | |
1659 | use_threadinfo_query = 0; | |
1660 | remote_find_new_threads (); | |
1661 | return; | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | * Collect a descriptive string about the given thread. | |
1666 | * The target may say anything it wants to about the thread | |
1667 | * (typically info about its blocked / runnable state, name, etc.). | |
1668 | * This string will appear in the info threads display. | |
1669 | * | |
1670 | * Optional: targets are not required to implement this function. | |
1671 | */ | |
1672 | ||
1673 | static char * | |
1674 | remote_threads_extra_info (struct thread_info *tp) | |
1675 | { | |
1676 | int result; | |
1677 | int set; | |
1678 | threadref id; | |
1679 | struct gdb_ext_thread_info threadinfo; | |
1680 | static char display_buf[100]; /* arbitrary... */ | |
1681 | char *bufp = alloca (PBUFSIZ); | |
1682 | int n = 0; /* position in display_buf */ | |
1683 | ||
1684 | if (remote_desc == 0) /* paranoia */ | |
1685 | internal_error ("remote_threads_extra_info"); | |
1686 | ||
1687 | if (use_threadextra_query) | |
1688 | { | |
480ff1fb | 1689 | sprintf (bufp, "qThreadExtraInfo,%x", tp->pid); |
9d1f7ab2 MS |
1690 | putpkt (bufp); |
1691 | getpkt (bufp, PBUFSIZ, 0); | |
1692 | if (bufp[0] != 0) | |
1693 | { | |
1694 | char *p; | |
1695 | ||
1696 | for (p = display_buf; | |
1697 | p < display_buf + sizeof(display_buf) - 1 && | |
1698 | bufp[0] != 0 && | |
1699 | bufp[1] != 0; | |
1700 | p++, bufp+=2) | |
1701 | { | |
1702 | *p = fromhex (bufp[0]) * 16 + fromhex (bufp[1]); | |
1703 | } | |
1704 | *p = 0; | |
1705 | return display_buf; | |
1706 | } | |
0f71a2f6 | 1707 | } |
9d1f7ab2 MS |
1708 | |
1709 | /* If the above query fails, fall back to the old method. */ | |
1710 | use_threadextra_query = 0; | |
1711 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1712 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
1713 | int_to_threadref (&id, tp->pid); | |
1714 | if (remote_get_threadinfo (&id, set, &threadinfo)) | |
1715 | if (threadinfo.active) | |
0f71a2f6 | 1716 | { |
9d1f7ab2 MS |
1717 | if (*threadinfo.shortname) |
1718 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1719 | if (*threadinfo.display) | |
1720 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1721 | if (*threadinfo.more_display) | |
1722 | n += sprintf(&display_buf[n], " Priority: %s", | |
1723 | threadinfo.more_display); | |
1724 | ||
1725 | if (n > 0) | |
c5aa993b | 1726 | { |
9d1f7ab2 MS |
1727 | /* for purely cosmetic reasons, clear up trailing commas */ |
1728 | if (',' == display_buf[n-1]) | |
1729 | display_buf[n-1] = ' '; | |
1730 | return display_buf; | |
c5aa993b | 1731 | } |
0f71a2f6 | 1732 | } |
9d1f7ab2 | 1733 | return NULL; |
0f71a2f6 | 1734 | } |
9d1f7ab2 | 1735 | |
c906108c | 1736 | \f |
c5aa993b | 1737 | |
c906108c SS |
1738 | /* Restart the remote side; this is an extended protocol operation. */ |
1739 | ||
1740 | static void | |
fba45db2 | 1741 | extended_remote_restart (void) |
c906108c | 1742 | { |
085dd6e6 | 1743 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1744 | |
1745 | /* Send the restart command; for reasons I don't understand the | |
1746 | remote side really expects a number after the "R". */ | |
1747 | buf[0] = 'R'; | |
1748 | sprintf (&buf[1], "%x", 0); | |
1749 | putpkt (buf); | |
1750 | ||
1751 | /* Now query for status so this looks just like we restarted | |
1752 | gdbserver from scratch. */ | |
1753 | putpkt ("?"); | |
c2d11a7d | 1754 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1755 | } |
1756 | \f | |
1757 | /* Clean up connection to a remote debugger. */ | |
1758 | ||
1759 | /* ARGSUSED */ | |
1760 | static void | |
fba45db2 | 1761 | remote_close (int quitting) |
c906108c SS |
1762 | { |
1763 | if (remote_desc) | |
1764 | SERIAL_CLOSE (remote_desc); | |
1765 | remote_desc = NULL; | |
1766 | } | |
1767 | ||
1768 | /* Query the remote side for the text, data and bss offsets. */ | |
1769 | ||
1770 | static void | |
fba45db2 | 1771 | get_offsets (void) |
c906108c | 1772 | { |
085dd6e6 JM |
1773 | char *buf = alloca (PBUFSIZ); |
1774 | char *ptr; | |
c906108c SS |
1775 | int lose; |
1776 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1777 | struct section_offsets *offs; | |
1778 | ||
1779 | putpkt ("qOffsets"); | |
1780 | ||
c2d11a7d | 1781 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1782 | |
1783 | if (buf[0] == '\000') | |
1784 | return; /* Return silently. Stub doesn't support | |
1785 | this command. */ | |
1786 | if (buf[0] == 'E') | |
1787 | { | |
1788 | warning ("Remote failure reply: %s", buf); | |
1789 | return; | |
1790 | } | |
1791 | ||
1792 | /* Pick up each field in turn. This used to be done with scanf, but | |
1793 | scanf will make trouble if CORE_ADDR size doesn't match | |
1794 | conversion directives correctly. The following code will work | |
1795 | with any size of CORE_ADDR. */ | |
1796 | text_addr = data_addr = bss_addr = 0; | |
1797 | ptr = buf; | |
1798 | lose = 0; | |
1799 | ||
1800 | if (strncmp (ptr, "Text=", 5) == 0) | |
1801 | { | |
1802 | ptr += 5; | |
1803 | /* Don't use strtol, could lose on big values. */ | |
1804 | while (*ptr && *ptr != ';') | |
1805 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1806 | } | |
1807 | else | |
1808 | lose = 1; | |
1809 | ||
1810 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1811 | { | |
1812 | ptr += 6; | |
1813 | while (*ptr && *ptr != ';') | |
1814 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1815 | } | |
1816 | else | |
1817 | lose = 1; | |
1818 | ||
1819 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1820 | { | |
1821 | ptr += 5; | |
1822 | while (*ptr && *ptr != ';') | |
1823 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1824 | } | |
1825 | else | |
1826 | lose = 1; | |
1827 | ||
1828 | if (lose) | |
1829 | error ("Malformed response to offset query, %s", buf); | |
1830 | ||
1831 | if (symfile_objfile == NULL) | |
1832 | return; | |
1833 | ||
d4f3574e SS |
1834 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1835 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1836 | |
a4c8257b | 1837 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1838 | |
1839 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1840 | because that's what nlmconv does now. The real solution requires changes | |
1841 | to the stub and remote.c that I don't have time to do right now. */ | |
1842 | ||
a4c8257b EZ |
1843 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1844 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1845 | |
1846 | objfile_relocate (symfile_objfile, offs); | |
1847 | } | |
1848 | ||
0f71a2f6 JM |
1849 | /* |
1850 | * Cisco version of section offsets: | |
1851 | * | |
1852 | * Instead of having GDB query the target for the section offsets, | |
1853 | * Cisco lets the target volunteer the information! It's also in | |
1854 | * a different format, so here are the functions that will decode | |
1855 | * a section offset packet from a Cisco target. | |
1856 | */ | |
1857 | ||
1858 | /* | |
1859 | * Function: remote_cisco_section_offsets | |
1860 | * | |
1861 | * Returns: zero for success, non-zero for failure | |
1862 | */ | |
1863 | ||
c5aa993b | 1864 | static int |
c2d11a7d JM |
1865 | remote_cisco_section_offsets (bfd_vma text_addr, |
1866 | bfd_vma data_addr, | |
1867 | bfd_vma bss_addr, | |
1868 | bfd_signed_vma *text_offs, | |
1869 | bfd_signed_vma *data_offs, | |
1870 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1871 | { |
1872 | bfd_vma text_base, data_base, bss_base; | |
1873 | struct minimal_symbol *start; | |
1874 | asection *sect; | |
c5aa993b | 1875 | bfd *abfd; |
0f71a2f6 JM |
1876 | int len; |
1877 | char *p; | |
1878 | ||
1879 | if (symfile_objfile == NULL) | |
c5aa993b | 1880 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1881 | |
1882 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1883 | if (start == NULL) | |
c5aa993b | 1884 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1885 | |
1886 | data_base = bss_base = 0; | |
1887 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1888 | ||
1889 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1890 | for (sect = abfd->sections; |
0f71a2f6 JM |
1891 | sect != 0; |
1892 | sect = sect->next) | |
1893 | { | |
c5aa993b | 1894 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1895 | len = strlen (p); |
1896 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1897 | if (data_base == 0 || | |
1898 | data_base > bfd_get_section_vma (abfd, sect)) | |
1899 | data_base = bfd_get_section_vma (abfd, sect); | |
1900 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1901 | if (bss_base == 0 || |
0f71a2f6 JM |
1902 | bss_base > bfd_get_section_vma (abfd, sect)) |
1903 | bss_base = bfd_get_section_vma (abfd, sect); | |
1904 | } | |
1905 | *text_offs = text_addr - text_base; | |
1906 | *data_offs = data_addr - data_base; | |
c5aa993b | 1907 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1908 | if (remote_debug) |
1909 | { | |
1910 | char tmp[128]; | |
1911 | ||
1912 | sprintf (tmp, "VMA: text = 0x"); | |
1913 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1914 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1915 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1916 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1917 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1918 | fprintf_filtered (gdb_stdlog, tmp); | |
1919 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1920 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1921 | paddr_nz (*text_offs), | |
1922 | paddr_nz (*data_offs), | |
1923 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1924 | } |
1925 | ||
1926 | return 0; | |
1927 | } | |
1928 | ||
1929 | /* | |
1930 | * Function: remote_cisco_objfile_relocate | |
1931 | * | |
1932 | * Relocate the symbol file for a remote target. | |
1933 | */ | |
1934 | ||
96baa820 | 1935 | void |
fba45db2 KB |
1936 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
1937 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
1938 | { |
1939 | struct section_offsets *offs; | |
1940 | ||
c5aa993b | 1941 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1942 | { |
1943 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1944 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1945 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1946 | |
d4f3574e SS |
1947 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1948 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 1949 | |
a4c8257b EZ |
1950 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
1951 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
1952 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
1953 | |
1954 | /* First call the standard objfile_relocate. */ | |
1955 | objfile_relocate (symfile_objfile, offs); | |
1956 | ||
1957 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1958 | the exec target. These entries will control memory transfers |
1959 | from the exec file. */ | |
0f71a2f6 JM |
1960 | |
1961 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1962 | } | |
1963 | } | |
1964 | ||
c906108c SS |
1965 | /* Stub for catch_errors. */ |
1966 | ||
0f71a2f6 | 1967 | static int |
c2d11a7d | 1968 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
1969 | { |
1970 | start_remote (); /* Initialize gdb process mechanisms */ | |
1971 | return 1; | |
1972 | } | |
1973 | ||
c906108c | 1974 | static int |
fba45db2 | 1975 | remote_start_remote (PTR dummy) |
c906108c | 1976 | { |
8edbea78 | 1977 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
1978 | |
1979 | /* Ack any packet which the remote side has already sent. */ | |
1980 | SERIAL_WRITE (remote_desc, "+", 1); | |
1981 | ||
1982 | /* Let the stub know that we want it to return the thread. */ | |
1983 | set_thread (-1, 0); | |
1984 | ||
1985 | inferior_pid = remote_current_thread (inferior_pid); | |
1986 | ||
1987 | get_offsets (); /* Get text, data & bss offsets */ | |
1988 | ||
1989 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 1990 | immediate_quit--; |
c906108c | 1991 | |
0f71a2f6 | 1992 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1993 | } |
1994 | ||
1995 | /* Open a connection to a remote debugger. | |
1996 | NAME is the filename used for communication. */ | |
1997 | ||
1998 | static void | |
fba45db2 | 1999 | remote_open (char *name, int from_tty) |
c906108c SS |
2000 | { |
2001 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2002 | } | |
2003 | ||
43ff13b4 JM |
2004 | /* Just like remote_open, but with asynchronous support. */ |
2005 | static void | |
fba45db2 | 2006 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2007 | { |
2008 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2009 | } | |
2010 | ||
c906108c SS |
2011 | /* Open a connection to a remote debugger using the extended |
2012 | remote gdb protocol. NAME is the filename used for communication. */ | |
2013 | ||
2014 | static void | |
fba45db2 | 2015 | extended_remote_open (char *name, int from_tty) |
c906108c | 2016 | { |
c5aa993b | 2017 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2018 | } |
2019 | ||
43ff13b4 JM |
2020 | /* Just like extended_remote_open, but with asynchronous support. */ |
2021 | static void | |
fba45db2 | 2022 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2023 | { |
c5aa993b | 2024 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2025 | } |
2026 | ||
c906108c SS |
2027 | /* Generic code for opening a connection to a remote target. */ |
2028 | ||
d471ea57 AC |
2029 | static void |
2030 | init_all_packet_configs (void) | |
2031 | { | |
2032 | int i; | |
2033 | update_packet_config (&remote_protocol_P); | |
2034 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
2035 | update_packet_config (&remote_protocol_Z[i]); | |
2036 | /* Force remote_write_bytes to check whether target supports binary | |
2037 | downloading. */ | |
2038 | update_packet_config (&remote_protocol_binary_download); | |
2039 | } | |
2040 | ||
c906108c | 2041 | static void |
fba45db2 KB |
2042 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2043 | int extended_p) | |
c906108c SS |
2044 | { |
2045 | if (name == 0) | |
2046 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2047 | serial device is attached to the remote system\n\ |
2048 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2049 | |
6426a772 JM |
2050 | /* See FIXME above */ |
2051 | wait_forever_enabled_p = 1; | |
2052 | ||
c906108c SS |
2053 | target_preopen (from_tty); |
2054 | ||
2055 | unpush_target (target); | |
2056 | ||
c906108c SS |
2057 | remote_desc = SERIAL_OPEN (name); |
2058 | if (!remote_desc) | |
2059 | perror_with_name (name); | |
2060 | ||
2061 | if (baud_rate != -1) | |
2062 | { | |
2063 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2064 | { | |
2065 | SERIAL_CLOSE (remote_desc); | |
2066 | perror_with_name (name); | |
2067 | } | |
2068 | } | |
2069 | ||
c906108c SS |
2070 | SERIAL_RAW (remote_desc); |
2071 | ||
2072 | /* If there is something sitting in the buffer we might take it as a | |
2073 | response to a command, which would be bad. */ | |
2074 | SERIAL_FLUSH_INPUT (remote_desc); | |
2075 | ||
2076 | if (from_tty) | |
2077 | { | |
2078 | puts_filtered ("Remote debugging using "); | |
2079 | puts_filtered (name); | |
2080 | puts_filtered ("\n"); | |
2081 | } | |
c5aa993b | 2082 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2083 | |
d471ea57 | 2084 | init_all_packet_configs (); |
96baa820 | 2085 | |
c5aa993b | 2086 | general_thread = -2; |
cce74817 | 2087 | continue_thread = -2; |
c906108c | 2088 | |
9d1f7ab2 MS |
2089 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2090 | use_threadinfo_query = 1; | |
2091 | use_threadextra_query = 1; | |
2092 | ||
c906108c SS |
2093 | /* Without this, some commands which require an active target (such |
2094 | as kill) won't work. This variable serves (at least) double duty | |
2095 | as both the pid of the target process (if it has such), and as a | |
2096 | flag indicating that a target is active. These functions should | |
2097 | be split out into seperate variables, especially since GDB will | |
2098 | someday have a notion of debugging several processes. */ | |
2099 | ||
2100 | inferior_pid = MAGIC_NULL_PID; | |
2101 | /* Start the remote connection; if error (0), discard this target. | |
2102 | In particular, if the user quits, be sure to discard it | |
2103 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2104 | if (!catch_errors (remote_start_remote, NULL, |
2105 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2106 | RETURN_MASK_ALL)) |
2107 | { | |
2108 | pop_target (); | |
2109 | return; | |
2110 | } | |
2111 | ||
2112 | if (extended_p) | |
2113 | { | |
2114 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 2115 | char *buf = alloca (PBUFSIZ); |
c906108c | 2116 | putpkt ("!"); |
c2d11a7d | 2117 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
2118 | } |
2119 | } | |
2120 | ||
43ff13b4 JM |
2121 | /* Just like remote_open but with asynchronous support. */ |
2122 | static void | |
fba45db2 KB |
2123 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2124 | int extended_p) | |
43ff13b4 JM |
2125 | { |
2126 | if (name == 0) | |
2127 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2128 | serial device is attached to the remote system\n\ |
2129 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2130 | |
2131 | target_preopen (from_tty); | |
2132 | ||
2133 | unpush_target (target); | |
2134 | ||
43ff13b4 JM |
2135 | remote_desc = SERIAL_OPEN (name); |
2136 | if (!remote_desc) | |
2137 | perror_with_name (name); | |
2138 | ||
2139 | if (baud_rate != -1) | |
2140 | { | |
2141 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2142 | { | |
2143 | SERIAL_CLOSE (remote_desc); | |
2144 | perror_with_name (name); | |
2145 | } | |
2146 | } | |
2147 | ||
2148 | SERIAL_RAW (remote_desc); | |
2149 | ||
2150 | /* If there is something sitting in the buffer we might take it as a | |
2151 | response to a command, which would be bad. */ | |
2152 | SERIAL_FLUSH_INPUT (remote_desc); | |
2153 | ||
2154 | if (from_tty) | |
2155 | { | |
2156 | puts_filtered ("Remote debugging using "); | |
2157 | puts_filtered (name); | |
2158 | puts_filtered ("\n"); | |
2159 | } | |
2160 | ||
c5aa993b | 2161 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2162 | |
d471ea57 | 2163 | init_all_packet_configs (); |
43ff13b4 | 2164 | |
c5aa993b | 2165 | general_thread = -2; |
43ff13b4 JM |
2166 | continue_thread = -2; |
2167 | ||
9d1f7ab2 MS |
2168 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2169 | use_threadinfo_query = 1; | |
2170 | use_threadextra_query = 1; | |
2171 | ||
43ff13b4 JM |
2172 | /* Without this, some commands which require an active target (such |
2173 | as kill) won't work. This variable serves (at least) double duty | |
2174 | as both the pid of the target process (if it has such), and as a | |
2175 | flag indicating that a target is active. These functions should | |
2176 | be split out into seperate variables, especially since GDB will | |
2177 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2178 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2179 | |
2180 | /* With this target we start out by owning the terminal. */ | |
2181 | remote_async_terminal_ours_p = 1; | |
2182 | ||
2183 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2184 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2185 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2186 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2187 | around this. Eventually a mechanism that allows | |
2188 | wait_for_inferior() to expect/get timeouts will be | |
2189 | implemented. */ | |
2190 | wait_forever_enabled_p = 0; | |
2191 | ||
43ff13b4 JM |
2192 | /* Start the remote connection; if error (0), discard this target. |
2193 | In particular, if the user quits, be sure to discard it | |
2194 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2195 | if (!catch_errors (remote_start_remote, NULL, |
2196 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2197 | RETURN_MASK_ALL)) |
2198 | { | |
43ff13b4 | 2199 | pop_target (); |
6426a772 | 2200 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2201 | return; |
2202 | } | |
2203 | ||
6426a772 JM |
2204 | wait_forever_enabled_p = 1; |
2205 | ||
2206 | if (extended_p) | |
43ff13b4 | 2207 | { |
6426a772 JM |
2208 | /* tell the remote that we're using the extended protocol. */ |
2209 | char *buf = alloca (PBUFSIZ); | |
2210 | putpkt ("!"); | |
c2d11a7d | 2211 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2212 | } |
43ff13b4 JM |
2213 | } |
2214 | ||
c906108c SS |
2215 | /* This takes a program previously attached to and detaches it. After |
2216 | this is done, GDB can be used to debug some other program. We | |
2217 | better not have left any breakpoints in the target program or it'll | |
2218 | die when it hits one. */ | |
2219 | ||
2220 | static void | |
fba45db2 | 2221 | remote_detach (char *args, int from_tty) |
c906108c | 2222 | { |
085dd6e6 | 2223 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2224 | |
2225 | if (args) | |
2226 | error ("Argument given to \"detach\" when remotely debugging."); | |
2227 | ||
2228 | /* Tell the remote target to detach. */ | |
2229 | strcpy (buf, "D"); | |
c2d11a7d | 2230 | remote_send (buf, PBUFSIZ); |
c906108c | 2231 | |
cca728d0 | 2232 | target_mourn_inferior (); |
c906108c SS |
2233 | if (from_tty) |
2234 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2235 | |
c906108c SS |
2236 | } |
2237 | ||
43ff13b4 JM |
2238 | /* Same as remote_detach, but with async support. */ |
2239 | static void | |
fba45db2 | 2240 | remote_async_detach (char *args, int from_tty) |
43ff13b4 JM |
2241 | { |
2242 | char *buf = alloca (PBUFSIZ); | |
2243 | ||
2244 | if (args) | |
2245 | error ("Argument given to \"detach\" when remotely debugging."); | |
2246 | ||
2247 | /* Tell the remote target to detach. */ | |
2248 | strcpy (buf, "D"); | |
c2d11a7d | 2249 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2250 | |
2251 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2252 | if (target_is_async_p ()) |
c2c6d25f | 2253 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2254 | |
cca728d0 | 2255 | target_mourn_inferior (); |
43ff13b4 JM |
2256 | if (from_tty) |
2257 | puts_filtered ("Ending remote debugging.\n"); | |
2258 | } | |
2259 | ||
c906108c SS |
2260 | /* Convert hex digit A to a number. */ |
2261 | ||
2262 | int | |
fba45db2 | 2263 | fromhex (int a) |
c906108c SS |
2264 | { |
2265 | if (a >= '0' && a <= '9') | |
2266 | return a - '0'; | |
2267 | else if (a >= 'a' && a <= 'f') | |
2268 | return a - 'a' + 10; | |
2269 | else if (a >= 'A' && a <= 'F') | |
2270 | return a - 'A' + 10; | |
c5aa993b | 2271 | else |
c906108c SS |
2272 | error ("Reply contains invalid hex digit %d", a); |
2273 | } | |
2274 | ||
2275 | /* Convert number NIB to a hex digit. */ | |
2276 | ||
2277 | static int | |
fba45db2 | 2278 | tohex (int nib) |
c906108c SS |
2279 | { |
2280 | if (nib < 10) | |
c5aa993b | 2281 | return '0' + nib; |
c906108c | 2282 | else |
c5aa993b | 2283 | return 'a' + nib - 10; |
c906108c SS |
2284 | } |
2285 | \f | |
2286 | /* Tell the remote machine to resume. */ | |
2287 | ||
2288 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2289 | ||
2290 | static int last_sent_step; | |
2291 | ||
2292 | static void | |
fba45db2 | 2293 | remote_resume (int pid, int step, enum target_signal siggnal) |
c906108c | 2294 | { |
085dd6e6 | 2295 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2296 | |
2297 | if (pid == -1) | |
2298 | set_thread (0, 0); /* run any thread */ | |
2299 | else | |
2300 | set_thread (pid, 0); /* run this thread */ | |
2301 | ||
c906108c SS |
2302 | last_sent_signal = siggnal; |
2303 | last_sent_step = step; | |
2304 | ||
2305 | /* A hook for when we need to do something at the last moment before | |
2306 | resumption. */ | |
2307 | if (target_resume_hook) | |
2308 | (*target_resume_hook) (); | |
2309 | ||
2310 | if (siggnal != TARGET_SIGNAL_0) | |
2311 | { | |
2312 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2313 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2314 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2315 | buf[3] = '\0'; |
2316 | } | |
2317 | else | |
c5aa993b | 2318 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2319 | |
2320 | putpkt (buf); | |
2321 | } | |
43ff13b4 JM |
2322 | |
2323 | /* Same as remote_resume, but with async support. */ | |
2324 | static void | |
fba45db2 | 2325 | remote_async_resume (int pid, int step, enum target_signal siggnal) |
43ff13b4 JM |
2326 | { |
2327 | char *buf = alloca (PBUFSIZ); | |
2328 | ||
2329 | if (pid == -1) | |
2330 | set_thread (0, 0); /* run any thread */ | |
2331 | else | |
2332 | set_thread (pid, 0); /* run this thread */ | |
2333 | ||
43ff13b4 JM |
2334 | last_sent_signal = siggnal; |
2335 | last_sent_step = step; | |
2336 | ||
2337 | /* A hook for when we need to do something at the last moment before | |
2338 | resumption. */ | |
2339 | if (target_resume_hook) | |
2340 | (*target_resume_hook) (); | |
2341 | ||
43ff13b4 JM |
2342 | if (siggnal != TARGET_SIGNAL_0) |
2343 | { | |
2344 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2345 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2346 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2347 | buf[3] = '\0'; |
2348 | } | |
2349 | else | |
c5aa993b | 2350 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 | 2351 | |
2acceee2 JM |
2352 | /* We are about to start executing the inferior, let's register it |
2353 | with the event loop. NOTE: this is the one place where all the | |
2354 | execution commands end up. We could alternatively do this in each | |
2355 | of the execution commands in infcmd.c.*/ | |
2356 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2357 | into infcmd.c in order to allow inferior function calls to work | |
2358 | NOT asynchronously. */ | |
ed9a39eb | 2359 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2360 | target_async (inferior_event_handler, 0); |
2361 | /* Tell the world that the target is now executing. */ | |
2362 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2363 | this? Instead, should the client of target just assume (for | |
2364 | async targets) that the target is going to start executing? Is | |
2365 | this information already found in the continuation block? */ | |
ed9a39eb | 2366 | if (target_is_async_p ()) |
2acceee2 | 2367 | target_executing = 1; |
43ff13b4 JM |
2368 | putpkt (buf); |
2369 | } | |
c906108c | 2370 | \f |
43ff13b4 JM |
2371 | |
2372 | /* Set up the signal handler for SIGINT, while the target is | |
2373 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2374 | static void | |
fba45db2 | 2375 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2376 | { |
c5aa993b | 2377 | sigint_remote_token = |
43ff13b4 JM |
2378 | create_async_signal_handler (async_remote_interrupt, NULL); |
2379 | signal (SIGINT, handle_remote_sigint); | |
2380 | } | |
2381 | ||
2382 | /* Signal handler for SIGINT, while the target is executing. */ | |
2383 | static void | |
fba45db2 | 2384 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2385 | { |
2386 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2387 | sigint_remote_twice_token = |
43ff13b4 JM |
2388 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2389 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2390 | } | |
2391 | ||
2392 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2393 | sent once. It will take effect the second time that the user sends | |
2394 | a ^C. */ | |
2395 | static void | |
fba45db2 | 2396 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2397 | { |
2398 | signal (sig, handle_sigint); | |
c5aa993b | 2399 | sigint_remote_twice_token = |
2df3850c | 2400 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2401 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2402 | } | |
2403 | ||
6426a772 | 2404 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2405 | to a ^C. */ |
c5aa993b | 2406 | static void |
fba45db2 | 2407 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2408 | { |
2409 | if (remote_debug) | |
2410 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2411 | ||
2412 | target_stop (); | |
2413 | } | |
2414 | ||
2415 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2416 | up on the target alltogether. */ | |
2df3850c | 2417 | void |
fba45db2 | 2418 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2419 | { |
2df3850c JM |
2420 | if (remote_debug) |
2421 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2422 | /* Do something only if the target was not killed by the previous |
2423 | cntl-C. */ | |
2424 | if (target_executing) | |
2425 | { | |
2426 | interrupt_query (); | |
2427 | signal (SIGINT, handle_remote_sigint); | |
2428 | } | |
43ff13b4 JM |
2429 | } |
2430 | ||
2431 | /* Reinstall the usual SIGINT handlers, after the target has | |
2432 | stopped. */ | |
6426a772 JM |
2433 | static void |
2434 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2435 | { |
2436 | signal (SIGINT, handle_sigint); | |
2437 | if (sigint_remote_twice_token) | |
c2c6d25f | 2438 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2439 | if (sigint_remote_token) |
c2c6d25f | 2440 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2441 | } |
2442 | ||
c906108c SS |
2443 | /* Send ^C to target to halt it. Target will respond, and send us a |
2444 | packet. */ | |
507f3c78 | 2445 | static void (*ofunc) (int); |
c906108c | 2446 | |
7a292a7a SS |
2447 | /* The command line interface's stop routine. This function is installed |
2448 | as a signal handler for SIGINT. The first time a user requests a | |
2449 | stop, we call remote_stop to send a break or ^C. If there is no | |
2450 | response from the target (it didn't stop when the user requested it), | |
2451 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2452 | static void |
fba45db2 | 2453 | remote_interrupt (int signo) |
c906108c | 2454 | { |
7a292a7a SS |
2455 | /* If this doesn't work, try more severe steps. */ |
2456 | signal (signo, remote_interrupt_twice); | |
2457 | ||
2458 | if (remote_debug) | |
0f71a2f6 | 2459 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2460 | |
2461 | target_stop (); | |
2462 | } | |
2463 | ||
2464 | /* The user typed ^C twice. */ | |
2465 | ||
2466 | static void | |
fba45db2 | 2467 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2468 | { |
2469 | signal (signo, ofunc); | |
2470 | interrupt_query (); | |
c906108c SS |
2471 | signal (signo, remote_interrupt); |
2472 | } | |
7a292a7a SS |
2473 | |
2474 | /* This is the generic stop called via the target vector. When a target | |
2475 | interrupt is requested, either by the command line or the GUI, we | |
2476 | will eventually end up here. */ | |
c906108c | 2477 | static void |
fba45db2 | 2478 | remote_stop (void) |
c906108c | 2479 | { |
7a292a7a SS |
2480 | /* Send a break or a ^C, depending on user preference. */ |
2481 | if (remote_debug) | |
0f71a2f6 | 2482 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2483 | |
7a292a7a SS |
2484 | if (remote_break) |
2485 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2486 | else |
7a292a7a | 2487 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2488 | } |
2489 | ||
2490 | /* Ask the user what to do when an interrupt is received. */ | |
2491 | ||
2492 | static void | |
fba45db2 | 2493 | interrupt_query (void) |
c906108c SS |
2494 | { |
2495 | target_terminal_ours (); | |
2496 | ||
2497 | if (query ("Interrupted while waiting for the program.\n\ | |
2498 | Give up (and stop debugging it)? ")) | |
2499 | { | |
2500 | target_mourn_inferior (); | |
2501 | return_to_top_level (RETURN_QUIT); | |
2502 | } | |
2503 | ||
2504 | target_terminal_inferior (); | |
2505 | } | |
2506 | ||
6426a772 JM |
2507 | /* Enable/disable target terminal ownership. Most targets can use |
2508 | terminal groups to control terminal ownership. Remote targets are | |
2509 | different in that explicit transfer of ownership to/from GDB/target | |
2510 | is required. */ | |
2511 | ||
2512 | static void | |
2513 | remote_async_terminal_inferior (void) | |
2514 | { | |
2515 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2516 | sync_execution here. This function should only be called when | |
2517 | GDB is resuming the inferior in the forground. A background | |
2518 | resume (``run&'') should leave GDB in control of the terminal and | |
2519 | consequently should not call this code. */ | |
2520 | if (!sync_execution) | |
2521 | return; | |
2522 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2523 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2524 | to an asynchronous target with a synchronous command calls this | |
2525 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2526 | stops trying to transfer the terminal to the target when it | |
2527 | shouldn't this guard can go away. */ | |
2528 | if (!remote_async_terminal_ours_p) | |
2529 | return; | |
2530 | delete_file_handler (input_fd); | |
2531 | remote_async_terminal_ours_p = 0; | |
2532 | initialize_sigint_signal_handler (); | |
2533 | /* NOTE: At this point we could also register our selves as the | |
2534 | recipient of all input. Any characters typed could then be | |
2535 | passed on down to the target. */ | |
2536 | } | |
2537 | ||
2538 | static void | |
2539 | remote_async_terminal_ours (void) | |
2540 | { | |
2541 | /* See FIXME in remote_async_terminal_inferior. */ | |
2542 | if (!sync_execution) | |
2543 | return; | |
2544 | /* See FIXME in remote_async_terminal_inferior. */ | |
2545 | if (remote_async_terminal_ours_p) | |
2546 | return; | |
2547 | cleanup_sigint_signal_handler (NULL); | |
2548 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2549 | remote_async_terminal_ours_p = 1; | |
2550 | } | |
2551 | ||
c906108c SS |
2552 | /* If nonzero, ignore the next kill. */ |
2553 | ||
2554 | int kill_kludge; | |
2555 | ||
2556 | void | |
917317f4 | 2557 | remote_console_output (char *msg) |
c906108c SS |
2558 | { |
2559 | char *p; | |
2560 | ||
c5aa993b | 2561 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2562 | { |
2563 | char tb[2]; | |
2564 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2565 | tb[0] = c; | |
2566 | tb[1] = 0; | |
43ff13b4 | 2567 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2568 | } |
917317f4 | 2569 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2570 | } |
2571 | ||
0f71a2f6 JM |
2572 | /* Wait until the remote machine stops, then return, |
2573 | storing status in STATUS just as `wait' would. | |
2574 | Returns "pid", which in the case of a multi-threaded | |
2575 | remote OS, is the thread-id. */ | |
c906108c SS |
2576 | |
2577 | static int | |
fba45db2 | 2578 | remote_wait (int pid, struct target_waitstatus *status) |
c906108c | 2579 | { |
085dd6e6 | 2580 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2581 | int thread_num = -1; |
2582 | ||
2583 | status->kind = TARGET_WAITKIND_EXITED; | |
2584 | status->value.integer = 0; | |
2585 | ||
2586 | while (1) | |
2587 | { | |
2588 | unsigned char *p; | |
2589 | ||
c906108c | 2590 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2591 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2592 | signal (SIGINT, ofunc); |
2593 | ||
2594 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2595 | collection of trace data) every time the target stops. */ |
c906108c SS |
2596 | if (target_wait_loop_hook) |
2597 | (*target_wait_loop_hook) (); | |
2598 | ||
2599 | switch (buf[0]) | |
2600 | { | |
2601 | case 'E': /* Error of some sort */ | |
2602 | warning ("Remote failure reply: %s", buf); | |
2603 | continue; | |
2604 | case 'T': /* Status with PC, SP, FP, ... */ | |
2605 | { | |
2606 | int i; | |
2607 | long regno; | |
2608 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2609 | ||
2610 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2611 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2612 | ss = signal number |
2613 | n... = register number | |
2614 | r... = register contents | |
2615 | */ | |
c906108c SS |
2616 | p = &buf[3]; /* after Txx */ |
2617 | ||
2618 | while (*p) | |
2619 | { | |
2620 | unsigned char *p1; | |
2621 | char *p_temp; | |
2622 | ||
2623 | /* Read the register number */ | |
2624 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2625 | p1 = (unsigned char *) p_temp; |
c906108c | 2626 | |
c5aa993b | 2627 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2628 | { |
2629 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2630 | if (p1 == NULL) | |
2631 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2632 | Packet: '%s'\n", | |
2633 | p, buf); | |
2634 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2635 | { | |
2636 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2637 | record_currthread (thread_num); | |
2638 | p = (unsigned char *) p_temp; | |
2639 | } | |
2640 | } | |
2641 | else | |
2642 | { | |
2643 | p = p1; | |
2644 | ||
2645 | if (*p++ != ':') | |
2646 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2647 | Packet: '%s'\n", | |
2648 | p, buf); | |
2649 | ||
2650 | if (regno >= NUM_REGS) | |
2651 | warning ("Remote sent bad register number %ld: %s\n\ | |
2652 | Packet: '%s'\n", | |
2653 | regno, p, buf); | |
2654 | ||
2655 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2656 | { | |
2657 | if (p[0] == 0 || p[1] == 0) | |
2658 | warning ("Remote reply is too short: %s", buf); | |
2659 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2660 | p += 2; | |
2661 | } | |
2662 | supply_register (regno, regs); | |
2663 | } | |
2664 | ||
2665 | if (*p++ != ';') | |
2666 | { | |
2667 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2668 | warning (" here: %s", p); |
c906108c SS |
2669 | } |
2670 | } | |
2671 | } | |
2672 | /* fall through */ | |
2673 | case 'S': /* Old style status, just signal only */ | |
2674 | status->kind = TARGET_WAITKIND_STOPPED; | |
2675 | status->value.sig = (enum target_signal) | |
2676 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2677 | ||
0f71a2f6 JM |
2678 | if (buf[3] == 'p') |
2679 | { | |
2680 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2681 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2682 | |
2683 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2684 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2685 | value_from_string ("PDEBUG-")); |
2686 | cisco_kernel_mode = 0; | |
2687 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2688 | record_currthread (thread_num); | |
2689 | } | |
2690 | else if (buf[3] == 'k') | |
2691 | { | |
2692 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2693 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2694 | |
2695 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2696 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2697 | value_from_string ("KDEBUG-")); |
2698 | cisco_kernel_mode = 1; | |
2699 | } | |
c906108c | 2700 | goto got_status; |
0f71a2f6 JM |
2701 | case 'N': /* Cisco special: status and offsets */ |
2702 | { | |
2703 | bfd_vma text_addr, data_addr, bss_addr; | |
2704 | bfd_signed_vma text_off, data_off, bss_off; | |
2705 | unsigned char *p1; | |
2706 | ||
2707 | status->kind = TARGET_WAITKIND_STOPPED; | |
2708 | status->value.sig = (enum target_signal) | |
2709 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2710 | ||
c5aa993b | 2711 | if (symfile_objfile == NULL) |
0f71a2f6 | 2712 | { |
d4f3574e | 2713 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2714 | Packet Dropped"); |
2715 | goto got_status; | |
2716 | } | |
2717 | ||
2718 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2719 | * where AA is the signal number, TT is the new text | |
2720 | * address, DD * is the new data address, and BB is the | |
2721 | * new bss address. */ | |
2722 | ||
2723 | p = &buf[3]; | |
2724 | text_addr = strtoul (p, (char **) &p1, 16); | |
2725 | if (p1 == p || *p1 != ';') | |
2726 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2727 | p = p1 + 1; | |
2728 | data_addr = strtoul (p, (char **) &p1, 16); | |
2729 | if (p1 == p || *p1 != ';') | |
2730 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2731 | p = p1 + 1; | |
2732 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2733 | if (p1 == p) |
0f71a2f6 JM |
2734 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2735 | ||
2736 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2737 | &text_off, &data_off, &bss_off) | |
2738 | == 0) | |
c5aa993b | 2739 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2740 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2741 | ||
2742 | goto got_status; | |
2743 | } | |
c906108c SS |
2744 | case 'W': /* Target exited */ |
2745 | { | |
2746 | /* The remote process exited. */ | |
2747 | status->kind = TARGET_WAITKIND_EXITED; | |
2748 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2749 | goto got_status; | |
2750 | } | |
2751 | case 'X': | |
2752 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2753 | status->value.sig = (enum target_signal) | |
2754 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2755 | kill_kludge = 1; | |
2756 | ||
2757 | goto got_status; | |
2758 | case 'O': /* Console output */ | |
2759 | remote_console_output (buf + 1); | |
2760 | continue; | |
2761 | case '\0': | |
2762 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2763 | { | |
2764 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2765 | the remote system doesn't support it. */ |
c906108c SS |
2766 | target_terminal_ours_for_output (); |
2767 | printf_filtered | |
2768 | ("Can't send signals to this remote system. %s not sent.\n", | |
2769 | target_signal_to_name (last_sent_signal)); | |
2770 | last_sent_signal = TARGET_SIGNAL_0; | |
2771 | target_terminal_inferior (); | |
2772 | ||
2773 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2774 | putpkt ((char *) buf); | |
2775 | continue; | |
2776 | } | |
2777 | /* else fallthrough */ | |
2778 | default: | |
2779 | warning ("Invalid remote reply: %s", buf); | |
2780 | continue; | |
2781 | } | |
2782 | } | |
c5aa993b | 2783 | got_status: |
c906108c SS |
2784 | if (thread_num != -1) |
2785 | { | |
c906108c SS |
2786 | return thread_num; |
2787 | } | |
2788 | return inferior_pid; | |
2789 | } | |
2790 | ||
43ff13b4 JM |
2791 | /* Async version of remote_wait. */ |
2792 | static int | |
fba45db2 | 2793 | remote_async_wait (int pid, struct target_waitstatus *status) |
43ff13b4 JM |
2794 | { |
2795 | unsigned char *buf = alloca (PBUFSIZ); | |
2796 | int thread_num = -1; | |
2797 | ||
2798 | status->kind = TARGET_WAITKIND_EXITED; | |
2799 | status->value.integer = 0; | |
2800 | ||
2801 | while (1) | |
2802 | { | |
2803 | unsigned char *p; | |
c5aa993b | 2804 | |
ed9a39eb | 2805 | if (!target_is_async_p ()) |
43ff13b4 | 2806 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2807 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2808 | _never_ wait for ever -> test on target_is_async_p(). | |
2809 | However, before we do that we need to ensure that the caller | |
2810 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 2811 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 2812 | if (!target_is_async_p ()) |
43ff13b4 JM |
2813 | signal (SIGINT, ofunc); |
2814 | ||
2815 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2816 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2817 | if (target_wait_loop_hook) |
2818 | (*target_wait_loop_hook) (); | |
2819 | ||
2820 | switch (buf[0]) | |
2821 | { | |
2822 | case 'E': /* Error of some sort */ | |
2823 | warning ("Remote failure reply: %s", buf); | |
2824 | continue; | |
2825 | case 'T': /* Status with PC, SP, FP, ... */ | |
2826 | { | |
2827 | int i; | |
2828 | long regno; | |
2829 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2830 | ||
2831 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2832 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2833 | ss = signal number |
2834 | n... = register number | |
2835 | r... = register contents | |
2836 | */ | |
43ff13b4 JM |
2837 | p = &buf[3]; /* after Txx */ |
2838 | ||
2839 | while (*p) | |
2840 | { | |
2841 | unsigned char *p1; | |
2842 | char *p_temp; | |
2843 | ||
2844 | /* Read the register number */ | |
2845 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2846 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2847 | |
c5aa993b | 2848 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2849 | { |
2850 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2851 | if (p1 == NULL) | |
2852 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2853 | Packet: '%s'\n", | |
2854 | p, buf); | |
2855 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2856 | { | |
2857 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2858 | record_currthread (thread_num); | |
2859 | p = (unsigned char *) p_temp; | |
2860 | } | |
2861 | } | |
2862 | else | |
2863 | { | |
2864 | p = p1; | |
2865 | ||
2866 | if (*p++ != ':') | |
2867 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2868 | Packet: '%s'\n", | |
2869 | p, buf); | |
2870 | ||
2871 | if (regno >= NUM_REGS) | |
2872 | warning ("Remote sent bad register number %ld: %s\n\ | |
2873 | Packet: '%s'\n", | |
2874 | regno, p, buf); | |
2875 | ||
2876 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2877 | { | |
2878 | if (p[0] == 0 || p[1] == 0) | |
2879 | warning ("Remote reply is too short: %s", buf); | |
2880 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2881 | p += 2; | |
2882 | } | |
2883 | supply_register (regno, regs); | |
2884 | } | |
2885 | ||
2886 | if (*p++ != ';') | |
2887 | { | |
2888 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2889 | warning (" here: %s", p); |
43ff13b4 JM |
2890 | } |
2891 | } | |
2892 | } | |
2893 | /* fall through */ | |
2894 | case 'S': /* Old style status, just signal only */ | |
2895 | status->kind = TARGET_WAITKIND_STOPPED; | |
2896 | status->value.sig = (enum target_signal) | |
2897 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2898 | ||
2899 | if (buf[3] == 'p') | |
2900 | { | |
2901 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2902 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2903 | |
2904 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2905 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2906 | value_from_string ("PDEBUG-")); |
2907 | cisco_kernel_mode = 0; | |
2908 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2909 | record_currthread (thread_num); | |
2910 | } | |
2911 | else if (buf[3] == 'k') | |
2912 | { | |
2913 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2914 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2915 | |
2916 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2917 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2918 | value_from_string ("KDEBUG-")); |
2919 | cisco_kernel_mode = 1; | |
2920 | } | |
2921 | goto got_status; | |
2922 | case 'N': /* Cisco special: status and offsets */ | |
2923 | { | |
2924 | bfd_vma text_addr, data_addr, bss_addr; | |
2925 | bfd_signed_vma text_off, data_off, bss_off; | |
2926 | unsigned char *p1; | |
2927 | ||
2928 | status->kind = TARGET_WAITKIND_STOPPED; | |
2929 | status->value.sig = (enum target_signal) | |
2930 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2931 | ||
c5aa993b | 2932 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2933 | { |
2934 | warning ("Relocation packet recieved with no symbol file. \ | |
2935 | Packet Dropped"); | |
2936 | goto got_status; | |
2937 | } | |
2938 | ||
2939 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2940 | * where AA is the signal number, TT is the new text | |
2941 | * address, DD * is the new data address, and BB is the | |
2942 | * new bss address. */ | |
2943 | ||
2944 | p = &buf[3]; | |
2945 | text_addr = strtoul (p, (char **) &p1, 16); | |
2946 | if (p1 == p || *p1 != ';') | |
2947 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2948 | p = p1 + 1; | |
2949 | data_addr = strtoul (p, (char **) &p1, 16); | |
2950 | if (p1 == p || *p1 != ';') | |
2951 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2952 | p = p1 + 1; | |
2953 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2954 | if (p1 == p) |
43ff13b4 JM |
2955 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2956 | ||
2957 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2958 | &text_off, &data_off, &bss_off) | |
2959 | == 0) | |
c5aa993b | 2960 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2961 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2962 | ||
2963 | goto got_status; | |
2964 | } | |
2965 | case 'W': /* Target exited */ | |
2966 | { | |
2967 | /* The remote process exited. */ | |
2968 | status->kind = TARGET_WAITKIND_EXITED; | |
2969 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2970 | goto got_status; | |
2971 | } | |
2972 | case 'X': | |
2973 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2974 | status->value.sig = (enum target_signal) | |
2975 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2976 | kill_kludge = 1; | |
2977 | ||
2978 | goto got_status; | |
2979 | case 'O': /* Console output */ | |
2980 | remote_console_output (buf + 1); | |
c4093a6a JM |
2981 | /* Return immediately to the event loop. The event loop will |
2982 | still be waiting on the inferior afterwards. */ | |
2983 | status->kind = TARGET_WAITKIND_IGNORE; | |
2984 | goto got_status; | |
43ff13b4 JM |
2985 | case '\0': |
2986 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2987 | { | |
2988 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2989 | the remote system doesn't support it. */ |
43ff13b4 JM |
2990 | target_terminal_ours_for_output (); |
2991 | printf_filtered | |
2992 | ("Can't send signals to this remote system. %s not sent.\n", | |
2993 | target_signal_to_name (last_sent_signal)); | |
2994 | last_sent_signal = TARGET_SIGNAL_0; | |
2995 | target_terminal_inferior (); | |
2996 | ||
2997 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2998 | putpkt ((char *) buf); | |
2999 | continue; | |
3000 | } | |
3001 | /* else fallthrough */ | |
3002 | default: | |
3003 | warning ("Invalid remote reply: %s", buf); | |
3004 | continue; | |
3005 | } | |
3006 | } | |
c5aa993b | 3007 | got_status: |
43ff13b4 JM |
3008 | if (thread_num != -1) |
3009 | { | |
3010 | return thread_num; | |
3011 | } | |
3012 | return inferior_pid; | |
3013 | } | |
3014 | ||
c906108c SS |
3015 | /* Number of bytes of registers this stub implements. */ |
3016 | ||
3017 | static int register_bytes_found; | |
3018 | ||
3019 | /* Read the remote registers into the block REGS. */ | |
3020 | /* Currently we just read all the registers, so we don't use regno. */ | |
3021 | ||
3022 | /* ARGSUSED */ | |
3023 | static void | |
fba45db2 | 3024 | remote_fetch_registers (int regno) |
c906108c | 3025 | { |
085dd6e6 | 3026 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3027 | int i; |
3028 | char *p; | |
7302a204 | 3029 | char *regs = alloca (REGISTER_BYTES); |
c906108c SS |
3030 | |
3031 | set_thread (inferior_pid, 1); | |
3032 | ||
3033 | sprintf (buf, "g"); | |
c2d11a7d | 3034 | remote_send (buf, PBUFSIZ); |
c906108c | 3035 | |
11cf8741 JM |
3036 | /* Save the size of the packet sent to us by the target. Its used |
3037 | as a heuristic when determining the max size of packets that the | |
3038 | target can safely receive. */ | |
3039 | if (actual_register_packet_size == 0) | |
3040 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
3041 | |
3042 | /* Unimplemented registers read as all bits zero. */ | |
3043 | memset (regs, 0, REGISTER_BYTES); | |
3044 | ||
3045 | /* We can get out of synch in various cases. If the first character | |
3046 | in the buffer is not a hex character, assume that has happened | |
3047 | and try to fetch another packet to read. */ | |
3048 | while ((buf[0] < '0' || buf[0] > '9') | |
3049 | && (buf[0] < 'a' || buf[0] > 'f') | |
3050 | && buf[0] != 'x') /* New: unavailable register value */ | |
3051 | { | |
3052 | if (remote_debug) | |
0f71a2f6 JM |
3053 | fprintf_unfiltered (gdb_stdlog, |
3054 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 3055 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3056 | } |
3057 | ||
3058 | /* Reply describes registers byte by byte, each byte encoded as two | |
3059 | hex characters. Suck them all up, then supply them to the | |
3060 | register cacheing/storage mechanism. */ | |
3061 | ||
3062 | p = buf; | |
3063 | for (i = 0; i < REGISTER_BYTES; i++) | |
3064 | { | |
3065 | if (p[0] == 0) | |
3066 | break; | |
3067 | if (p[1] == 0) | |
3068 | { | |
3069 | warning ("Remote reply is of odd length: %s", buf); | |
3070 | /* Don't change register_bytes_found in this case, and don't | |
3071 | print a second warning. */ | |
3072 | goto supply_them; | |
3073 | } | |
3074 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3075 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3076 | else |
3077 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3078 | p += 2; | |
3079 | } | |
3080 | ||
3081 | if (i != register_bytes_found) | |
3082 | { | |
3083 | register_bytes_found = i; | |
2649061d AC |
3084 | if (REGISTER_BYTES_OK_P () |
3085 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3086 | warning ("Remote reply is too short: %s", buf); |
c906108c | 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') | |
7302a204 | 3094 | set_register_cached (i, -1); |
c5aa993b | 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); | |
7302a204 | 3131 | regp = register_buffer (regno); |
5a2468f5 JM |
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 | 3144 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
7302a204 | 3145 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
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; | |
7302a204 | 3153 | char *regs; |
c906108c SS |
3154 | |
3155 | set_thread (inferior_pid, 1); | |
3156 | ||
5a2468f5 | 3157 | if (regno >= 0) |
c906108c | 3158 | { |
5a2468f5 | 3159 | switch (remote_protocol_P.support) |
c906108c | 3160 | { |
5a2468f5 JM |
3161 | case PACKET_DISABLE: |
3162 | break; | |
3163 | case PACKET_ENABLE: | |
3164 | if (store_register_using_P (regno)) | |
3165 | return; | |
3166 | else | |
3167 | error ("Protocol error: P packet not recognized by stub"); | |
3168 | case PACKET_SUPPORT_UNKNOWN: | |
3169 | if (store_register_using_P (regno)) | |
3170 | { | |
3171 | /* The stub recognized the 'P' packet. Remember this. */ | |
3172 | remote_protocol_P.support = PACKET_ENABLE; | |
3173 | return; | |
3174 | } | |
3175 | else | |
3176 | { | |
3177 | /* The stub does not support the 'P' packet. Use 'G' | |
3178 | instead, and don't try using 'P' in the future (it | |
3179 | will just waste our time). */ | |
3180 | remote_protocol_P.support = PACKET_DISABLE; | |
3181 | break; | |
3182 | } | |
c906108c | 3183 | } |
c906108c SS |
3184 | } |
3185 | ||
3186 | buf[0] = 'G'; | |
3187 | ||
3188 | /* Command describes registers byte by byte, | |
3189 | each byte encoded as two hex characters. */ | |
3190 | ||
7302a204 | 3191 | regs = register_buffer (-1); |
c906108c SS |
3192 | p = buf + 1; |
3193 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3194 | for (i = 0; i < register_bytes_found; i++) | |
3195 | { | |
7302a204 ND |
3196 | *p++ = tohex ((regs[i] >> 4) & 0xf); |
3197 | *p++ = tohex (regs[i] & 0xf); | |
c906108c SS |
3198 | } |
3199 | *p = '\0'; | |
3200 | ||
c2d11a7d | 3201 | remote_send (buf, PBUFSIZ); |
c906108c | 3202 | } |
c906108c SS |
3203 | \f |
3204 | ||
3205 | /* Return the number of hex digits in num. */ | |
3206 | ||
3207 | static int | |
fba45db2 | 3208 | hexnumlen (ULONGEST num) |
c906108c SS |
3209 | { |
3210 | int i; | |
3211 | ||
3212 | for (i = 0; num != 0; i++) | |
3213 | num >>= 4; | |
3214 | ||
3215 | return max (i, 1); | |
3216 | } | |
3217 | ||
2df3850c | 3218 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3219 | |
3220 | static int | |
fba45db2 | 3221 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3222 | { |
c906108c | 3223 | int len = hexnumlen (num); |
2df3850c JM |
3224 | return hexnumnstr (buf, num, len); |
3225 | } | |
3226 | ||
c906108c | 3227 | |
2df3850c | 3228 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3229 | |
2df3850c | 3230 | static int |
fba45db2 | 3231 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3232 | { |
3233 | int i; | |
3234 | ||
3235 | buf[width] = '\0'; | |
3236 | ||
3237 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3238 | { |
c5aa993b | 3239 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3240 | num >>= 4; |
3241 | } | |
3242 | ||
2df3850c | 3243 | return width; |
c906108c SS |
3244 | } |
3245 | ||
3246 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3247 | ||
3248 | static CORE_ADDR | |
fba45db2 | 3249 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3250 | { |
3251 | if (remote_address_size > 0 | |
3252 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3253 | { | |
3254 | /* Only create a mask when that mask can safely be constructed | |
3255 | in a ULONGEST variable. */ | |
3256 | ULONGEST mask = 1; | |
3257 | mask = (mask << remote_address_size) - 1; | |
3258 | addr &= mask; | |
3259 | } | |
3260 | return addr; | |
3261 | } | |
3262 | ||
3263 | /* Determine whether the remote target supports binary downloading. | |
3264 | This is accomplished by sending a no-op memory write of zero length | |
3265 | to the target at the specified address. It does not suffice to send | |
3266 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3267 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3268 | ||
96baa820 JM |
3269 | NOTE: This can still lose if the serial line is not eight-bit |
3270 | clean. In cases like this, the user should clear "remote | |
3271 | X-packet". */ | |
3272 | ||
c906108c | 3273 | static void |
fba45db2 | 3274 | check_binary_download (CORE_ADDR addr) |
c906108c | 3275 | { |
96baa820 | 3276 | switch (remote_protocol_binary_download.support) |
c906108c | 3277 | { |
96baa820 JM |
3278 | case PACKET_DISABLE: |
3279 | break; | |
3280 | case PACKET_ENABLE: | |
3281 | break; | |
3282 | case PACKET_SUPPORT_UNKNOWN: | |
3283 | { | |
3284 | char *buf = alloca (PBUFSIZ); | |
3285 | char *p; | |
3286 | ||
3287 | p = buf; | |
3288 | *p++ = 'X'; | |
3289 | p += hexnumstr (p, (ULONGEST) addr); | |
3290 | *p++ = ','; | |
3291 | p += hexnumstr (p, (ULONGEST) 0); | |
3292 | *p++ = ':'; | |
3293 | *p = '\0'; | |
3294 | ||
3295 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3296 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3297 | |
96baa820 JM |
3298 | if (buf[0] == '\0') |
3299 | { | |
3300 | if (remote_debug) | |
3301 | fprintf_unfiltered (gdb_stdlog, | |
3302 | "binary downloading NOT suppported by target\n"); | |
3303 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3304 | } | |
3305 | else | |
3306 | { | |
3307 | if (remote_debug) | |
3308 | fprintf_unfiltered (gdb_stdlog, | |
3309 | "binary downloading suppported by target\n"); | |
3310 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3311 | } | |
3312 | break; | |
3313 | } | |
c906108c SS |
3314 | } |
3315 | } | |
3316 | ||
3317 | /* Write memory data directly to the remote machine. | |
3318 | This does not inform the data cache; the data cache uses this. | |
3319 | MEMADDR is the address in the remote memory space. | |
3320 | MYADDR is the address of the buffer in our space. | |
3321 | LEN is the number of bytes. | |
3322 | ||
917317f4 JM |
3323 | Returns number of bytes transferred, or 0 (setting errno) for |
3324 | error. Only transfer a single packet. */ | |
c906108c SS |
3325 | |
3326 | static int | |
917317f4 | 3327 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3328 | { |
917317f4 | 3329 | unsigned char *buf; |
c906108c | 3330 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3331 | unsigned char *p; |
3332 | unsigned char *plen; | |
c2d11a7d | 3333 | long sizeof_buf; |
917317f4 JM |
3334 | int plenlen; |
3335 | int todo; | |
3336 | int nr_bytes; | |
c906108c SS |
3337 | |
3338 | /* Verify that the target can support a binary download */ | |
3339 | check_binary_download (memaddr); | |
3340 | ||
917317f4 | 3341 | /* Determine the max packet size. */ |
11cf8741 | 3342 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3343 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3344 | buf = alloca (sizeof_buf); | |
c906108c | 3345 | |
7a292a7a | 3346 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3347 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3348 | ||
917317f4 JM |
3349 | /* construct "M"<memaddr>","<len>":" */ |
3350 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3351 | p = buf; | |
3352 | ||
3353 | /* Append [XM]. Compute a best guess of the number of bytes | |
3354 | actually transfered. */ | |
3355 | switch (remote_protocol_binary_download.support) | |
c906108c | 3356 | { |
917317f4 JM |
3357 | case PACKET_ENABLE: |
3358 | *p++ = 'X'; | |
3359 | /* Best guess at number of bytes that will fit. */ | |
3360 | todo = min (len, max_buf_size); | |
3361 | break; | |
3362 | case PACKET_DISABLE: | |
3363 | *p++ = 'M'; | |
3364 | /* num bytes that will fit */ | |
3365 | todo = min (len, max_buf_size / 2); | |
3366 | break; | |
3367 | case PACKET_SUPPORT_UNKNOWN: | |
7f7e9482 AC |
3368 | internal_error ("%s:%d: remote_write_bytes: bad internal state", |
3369 | __FILE__, __LINE__); | |
3370 | default: | |
3371 | internal_error ("%s:%d: bad switch", __FILE__, __LINE__); | |
917317f4 JM |
3372 | } |
3373 | ||
3374 | /* Append <memaddr> */ | |
3375 | memaddr = remote_address_masked (memaddr); | |
3376 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3377 | *p++ = ','; | |
3378 | ||
3379 | /* Append <len>. Retain the location/size of <len>. It may | |
3380 | need to be adjusted once the packet body has been created. */ | |
3381 | plen = p; | |
3382 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3383 | p += plenlen; | |
3384 | *p++ = ':'; | |
3385 | *p = '\0'; | |
3386 | ||
3387 | /* Append the packet body. */ | |
3388 | switch (remote_protocol_binary_download.support) | |
3389 | { | |
3390 | case PACKET_ENABLE: | |
3391 | /* Binary mode. Send target system values byte by byte, in | |
3392 | increasing byte addresses. Only escape certain critical | |
3393 | characters. */ | |
3394 | for (nr_bytes = 0; | |
3395 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3396 | nr_bytes++) | |
c906108c | 3397 | { |
917317f4 JM |
3398 | switch (myaddr[nr_bytes] & 0xff) |
3399 | { | |
3400 | case '$': | |
3401 | case '#': | |
3402 | case 0x7d: | |
3403 | /* These must be escaped */ | |
3404 | *p++ = 0x7d; | |
3405 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3406 | break; | |
3407 | default: | |
3408 | *p++ = myaddr[nr_bytes] & 0xff; | |
3409 | break; | |
3410 | } | |
c906108c | 3411 | } |
917317f4 | 3412 | if (nr_bytes < todo) |
c906108c | 3413 | { |
917317f4 JM |
3414 | /* Escape chars have filled up the buffer prematurely, |
3415 | and we have actually sent fewer bytes than planned. | |
3416 | Fix-up the length field of the packet. Use the same | |
3417 | number of characters as before. */ | |
3418 | ||
3419 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3420 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3421 | } |
917317f4 JM |
3422 | break; |
3423 | case PACKET_DISABLE: | |
3424 | /* Normal mode: Send target system values byte by byte, in | |
3425 | increasing byte addresses. Each byte is encoded as a two hex | |
3426 | value. */ | |
3427 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3428 | { |
917317f4 JM |
3429 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3430 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3431 | } |
917317f4 JM |
3432 | *p = '\0'; |
3433 | break; | |
3434 | case PACKET_SUPPORT_UNKNOWN: | |
7f7e9482 AC |
3435 | internal_error ("%s:%d: remote_write_bytes: bad internal state", |
3436 | __FILE__, __LINE__); | |
3437 | default: | |
3438 | internal_error ("%s:%d: bad switch", __FILE__, __LINE__); | |
c906108c | 3439 | } |
917317f4 JM |
3440 | |
3441 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3442 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3443 | |
3444 | if (buf[0] == 'E') | |
3445 | { | |
3446 | /* There is no correspondance between what the remote protocol | |
3447 | uses for errors and errno codes. We would like a cleaner way | |
3448 | of representing errors (big enough to include errno codes, | |
3449 | bfd_error codes, and others). But for now just return EIO. */ | |
3450 | errno = EIO; | |
3451 | return 0; | |
3452 | } | |
3453 | ||
3454 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3455 | bytes than we'd planned. */ | |
3456 | return nr_bytes; | |
c906108c SS |
3457 | } |
3458 | ||
3459 | /* Read memory data directly from the remote machine. | |
3460 | This does not use the data cache; the data cache uses this. | |
3461 | MEMADDR is the address in the remote memory space. | |
3462 | MYADDR is the address of the buffer in our space. | |
3463 | LEN is the number of bytes. | |
3464 | ||
3465 | Returns number of bytes transferred, or 0 for error. */ | |
3466 | ||
917317f4 JM |
3467 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3468 | remote targets) shouldn't attempt to read the entire buffer. | |
3469 | Instead it should read a single packet worth of data and then | |
3470 | return the byte size of that packet to the caller. The caller (its | |
3471 | caller and its callers caller ;-) already contains code for | |
3472 | handling partial reads. */ | |
3473 | ||
c906108c | 3474 | static int |
fba45db2 | 3475 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3476 | { |
11cf8741 | 3477 | char *buf; |
c906108c | 3478 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3479 | long sizeof_buf; |
c906108c SS |
3480 | int origlen; |
3481 | ||
11cf8741 JM |
3482 | /* Create a buffer big enough for this packet. */ |
3483 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3484 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3485 | buf = alloca (sizeof_buf); | |
c906108c SS |
3486 | |
3487 | origlen = len; | |
3488 | while (len > 0) | |
3489 | { | |
c906108c SS |
3490 | char *p; |
3491 | int todo; | |
3492 | int i; | |
3493 | ||
c5aa993b | 3494 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3495 | |
3496 | /* construct "m"<memaddr>","<len>" */ | |
3497 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3498 | memaddr = remote_address_masked (memaddr); | |
3499 | p = buf; | |
3500 | *p++ = 'm'; | |
3501 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3502 | *p++ = ','; | |
3503 | p += hexnumstr (p, (ULONGEST) todo); | |
3504 | *p = '\0'; | |
3505 | ||
3506 | putpkt (buf); | |
c2d11a7d | 3507 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3508 | |
3509 | if (buf[0] == 'E') | |
3510 | { | |
3511 | /* There is no correspondance between what the remote protocol uses | |
3512 | for errors and errno codes. We would like a cleaner way of | |
3513 | representing errors (big enough to include errno codes, bfd_error | |
3514 | codes, and others). But for now just return EIO. */ | |
3515 | errno = EIO; | |
3516 | return 0; | |
3517 | } | |
3518 | ||
c5aa993b JM |
3519 | /* Reply describes memory byte by byte, |
3520 | each byte encoded as two hex characters. */ | |
c906108c SS |
3521 | |
3522 | p = buf; | |
3523 | for (i = 0; i < todo; i++) | |
3524 | { | |
3525 | if (p[0] == 0 || p[1] == 0) | |
3526 | /* Reply is short. This means that we were able to read | |
3527 | only part of what we wanted to. */ | |
3528 | return i + (origlen - len); | |
3529 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3530 | p += 2; | |
3531 | } | |
3532 | myaddr += todo; | |
3533 | memaddr += todo; | |
3534 | len -= todo; | |
3535 | } | |
3536 | return origlen; | |
3537 | } | |
3538 | \f | |
3539 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3540 | transferring to or from debugger address BUFFER. Write to inferior if |
3541 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3542 | for error. TARGET is unused. */ |
392a587b | 3543 | |
c906108c SS |
3544 | /* ARGSUSED */ |
3545 | static int | |
c338868a | 3546 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3547 | int should_write, |
3548 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3549 | struct target_ops *target) | |
c906108c | 3550 | { |
392a587b JM |
3551 | CORE_ADDR targ_addr; |
3552 | int targ_len; | |
4930751a C |
3553 | int res; |
3554 | ||
392a587b JM |
3555 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3556 | if (targ_len <= 0) | |
c906108c | 3557 | return 0; |
c906108c | 3558 | |
4930751a C |
3559 | if (should_write) |
3560 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3561 | else | |
3562 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3563 | ||
3564 | return res; | |
c906108c SS |
3565 | } |
3566 | ||
c5aa993b | 3567 | |
c906108c SS |
3568 | #if 0 |
3569 | /* Enable after 4.12. */ | |
3570 | ||
3571 | void | |
c338868a KB |
3572 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3573 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3574 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3575 | { |
3576 | if (increment == -4 && len == 4) | |
3577 | { | |
3578 | long mask_long, data_long; | |
3579 | long data_found_long; | |
3580 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3581 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3582 | long returned_long[2]; |
3583 | char *p; | |
3584 | ||
3585 | mask_long = extract_unsigned_integer (mask, len); | |
3586 | data_long = extract_unsigned_integer (data, len); | |
3587 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3588 | putpkt (buf); | |
c2d11a7d | 3589 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3590 | if (buf[0] == '\0') |
3591 | { | |
3592 | /* The stub doesn't support the 't' request. We might want to | |
3593 | remember this fact, but on the other hand the stub could be | |
3594 | switched on us. Maybe we should remember it only until | |
3595 | the next "target remote". */ | |
3596 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3597 | hirange, addr_found, data_found); | |
3598 | return; | |
3599 | } | |
3600 | ||
3601 | if (buf[0] == 'E') | |
3602 | /* There is no correspondance between what the remote protocol uses | |
3603 | for errors and errno codes. We would like a cleaner way of | |
3604 | representing errors (big enough to include errno codes, bfd_error | |
3605 | codes, and others). But for now just use EIO. */ | |
3606 | memory_error (EIO, startaddr); | |
3607 | p = buf; | |
3608 | addr_we_found = 0; | |
3609 | while (*p != '\0' && *p != ',') | |
3610 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3611 | if (*p == '\0') | |
3612 | error ("Protocol error: short return for search"); | |
3613 | ||
3614 | data_found_long = 0; | |
3615 | while (*p != '\0' && *p != ',') | |
3616 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3617 | /* Ignore anything after this comma, for future extensions. */ | |
3618 | ||
3619 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3620 | { | |
3621 | *addr_found = 0; | |
3622 | return; | |
3623 | } | |
3624 | ||
3625 | *addr_found = addr_we_found; | |
3626 | *data_found = store_unsigned_integer (data_we_found, len); | |
3627 | return; | |
3628 | } | |
3629 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3630 | hirange, addr_found, data_found); | |
3631 | } | |
3632 | #endif /* 0 */ | |
3633 | \f | |
3634 | static void | |
fba45db2 | 3635 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3636 | { |
3637 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3638 | } | |
3639 | \f | |
3640 | /* Stuff for dealing with the packets which are part of this protocol. | |
3641 | See comment at top of file for details. */ | |
3642 | ||
3643 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3644 | ||
3645 | static int | |
fba45db2 | 3646 | readchar (int timeout) |
c906108c SS |
3647 | { |
3648 | int ch; | |
3649 | ||
3650 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3651 | ||
2acceee2 JM |
3652 | if (ch >= 0) |
3653 | return (ch & 0x7f); | |
3654 | ||
3655 | switch ((enum serial_rc) ch) | |
c906108c SS |
3656 | { |
3657 | case SERIAL_EOF: | |
2acceee2 | 3658 | target_mourn_inferior (); |
c906108c | 3659 | error ("Remote connection closed"); |
2acceee2 | 3660 | /* no return */ |
c906108c SS |
3661 | case SERIAL_ERROR: |
3662 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3663 | /* no return */ |
c906108c | 3664 | case SERIAL_TIMEOUT: |
2acceee2 | 3665 | break; |
c906108c | 3666 | } |
2acceee2 | 3667 | return ch; |
c906108c SS |
3668 | } |
3669 | ||
3670 | /* Send the command in BUF to the remote machine, and read the reply | |
3671 | into BUF. Report an error if we get an error reply. */ | |
3672 | ||
3673 | static void | |
c2d11a7d JM |
3674 | remote_send (char *buf, |
3675 | long sizeof_buf) | |
c906108c SS |
3676 | { |
3677 | putpkt (buf); | |
c2d11a7d | 3678 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3679 | |
3680 | if (buf[0] == 'E') | |
3681 | error ("Remote failure reply: %s", buf); | |
3682 | } | |
3683 | ||
3684 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3685 | string notation. */ | |
3686 | ||
3687 | static void | |
fba45db2 | 3688 | print_packet (char *buf) |
c906108c SS |
3689 | { |
3690 | puts_filtered ("\""); | |
43e526b9 | 3691 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3692 | puts_filtered ("\""); |
3693 | } | |
3694 | ||
3695 | int | |
fba45db2 | 3696 | putpkt (char *buf) |
c906108c SS |
3697 | { |
3698 | return putpkt_binary (buf, strlen (buf)); | |
3699 | } | |
3700 | ||
3701 | /* Send a packet to the remote machine, with error checking. The data | |
3702 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3703 | to account for the $, # and checksum, and for a possible /0 if we are | |
3704 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3705 | ||
3706 | static int | |
fba45db2 | 3707 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3708 | { |
3709 | int i; | |
3710 | unsigned char csum = 0; | |
11cf8741 | 3711 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3712 | long sizeof_junkbuf = PBUFSIZ; |
3713 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3714 | |
c906108c SS |
3715 | int ch; |
3716 | int tcount = 0; | |
3717 | char *p; | |
3718 | ||
3719 | /* Copy the packet into buffer BUF2, encapsulating it | |
3720 | and giving it a checksum. */ | |
3721 | ||
c906108c SS |
3722 | p = buf2; |
3723 | *p++ = '$'; | |
3724 | ||
3725 | for (i = 0; i < cnt; i++) | |
3726 | { | |
3727 | csum += buf[i]; | |
3728 | *p++ = buf[i]; | |
3729 | } | |
3730 | *p++ = '#'; | |
3731 | *p++ = tohex ((csum >> 4) & 0xf); | |
3732 | *p++ = tohex (csum & 0xf); | |
3733 | ||
3734 | /* Send it over and over until we get a positive ack. */ | |
3735 | ||
3736 | while (1) | |
3737 | { | |
3738 | int started_error_output = 0; | |
3739 | ||
3740 | if (remote_debug) | |
3741 | { | |
3742 | *p = '\0'; | |
43e526b9 JM |
3743 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3744 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3745 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3746 | gdb_flush (gdb_stdlog); |
c906108c SS |
3747 | } |
3748 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3749 | perror_with_name ("putpkt: write failed"); | |
3750 | ||
3751 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3752 | while (1) | |
3753 | { | |
3754 | ch = readchar (remote_timeout); | |
3755 | ||
c5aa993b | 3756 | if (remote_debug) |
c906108c SS |
3757 | { |
3758 | switch (ch) | |
3759 | { | |
3760 | case '+': | |
1216fa2c | 3761 | case '-': |
c906108c SS |
3762 | case SERIAL_TIMEOUT: |
3763 | case '$': | |
3764 | if (started_error_output) | |
3765 | { | |
3766 | putchar_unfiltered ('\n'); | |
3767 | started_error_output = 0; | |
3768 | } | |
3769 | } | |
3770 | } | |
3771 | ||
3772 | switch (ch) | |
3773 | { | |
3774 | case '+': | |
3775 | if (remote_debug) | |
0f71a2f6 | 3776 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3777 | return 1; |
1216fa2c AC |
3778 | case '-': |
3779 | if (remote_debug) | |
3780 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3781 | case SERIAL_TIMEOUT: |
c5aa993b | 3782 | tcount++; |
c906108c SS |
3783 | if (tcount > 3) |
3784 | return 0; | |
3785 | break; /* Retransmit buffer */ | |
3786 | case '$': | |
3787 | { | |
40e3f985 FN |
3788 | if (remote_debug) |
3789 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3790 | /* It's probably an old response, and we're out of sync. |
3791 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3792 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3793 | continue; /* Now, go look for + */ |
c906108c SS |
3794 | } |
3795 | default: | |
3796 | if (remote_debug) | |
3797 | { | |
3798 | if (!started_error_output) | |
3799 | { | |
3800 | started_error_output = 1; | |
0f71a2f6 | 3801 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3802 | } |
0f71a2f6 | 3803 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3804 | } |
3805 | continue; | |
3806 | } | |
3807 | break; /* Here to retransmit */ | |
3808 | } | |
3809 | ||
3810 | #if 0 | |
3811 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3812 | able to get out next time we call QUIT, without anything as |
3813 | violent as interrupt_query. If we want to provide a way out of | |
3814 | here without getting to the next QUIT, it should be based on | |
3815 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3816 | if (quit_flag) |
3817 | { | |
3818 | quit_flag = 0; | |
3819 | interrupt_query (); | |
3820 | } | |
3821 | #endif | |
3822 | } | |
3823 | } | |
3824 | ||
0f71a2f6 JM |
3825 | static int remote_cisco_mode; |
3826 | ||
c906108c SS |
3827 | /* Come here after finding the start of the frame. Collect the rest |
3828 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3829 | compression. No more than sizeof_buf-1 characters are read so that |
3830 | the buffer can be NUL terminated. | |
c906108c | 3831 | |
c2d11a7d JM |
3832 | Returns -1 on error, number of characters in buffer (ignoring the |
3833 | trailing NULL) on success. (could be extended to return one of the | |
3834 | SERIAL status indications). */ | |
3835 | ||
3836 | static long | |
3837 | read_frame (char *buf, | |
3838 | long sizeof_buf) | |
c906108c SS |
3839 | { |
3840 | unsigned char csum; | |
c2d11a7d | 3841 | long bc; |
c906108c SS |
3842 | int c; |
3843 | ||
3844 | csum = 0; | |
c2d11a7d | 3845 | bc = 0; |
c906108c SS |
3846 | |
3847 | while (1) | |
3848 | { | |
c2d11a7d | 3849 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 3850 | c = readchar (remote_timeout); |
c906108c SS |
3851 | switch (c) |
3852 | { | |
3853 | case SERIAL_TIMEOUT: | |
3854 | if (remote_debug) | |
0f71a2f6 | 3855 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3856 | return -1; |
c906108c SS |
3857 | case '$': |
3858 | if (remote_debug) | |
0f71a2f6 JM |
3859 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3860 | gdb_stdlog); | |
c2d11a7d | 3861 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
3862 | case '#': |
3863 | { | |
3864 | unsigned char pktcsum; | |
e1b09194 AC |
3865 | int check_0 = 0; |
3866 | int check_1 = 0; | |
c906108c | 3867 | |
c2d11a7d | 3868 | buf[bc] = '\0'; |
c906108c | 3869 | |
e1b09194 AC |
3870 | check_0 = readchar (remote_timeout); |
3871 | if (check_0 >= 0) | |
3872 | check_1 = readchar (remote_timeout); | |
3873 | ||
3874 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
3875 | { | |
3876 | if (remote_debug) | |
3877 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
3878 | return -1; | |
3879 | } | |
3880 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3881 | { |
3882 | if (remote_debug) | |
3883 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
3884 | return -1; | |
3885 | } | |
c906108c | 3886 | |
e1b09194 | 3887 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 3888 | if (csum == pktcsum) |
c2d11a7d | 3889 | return bc; |
c906108c | 3890 | |
c5aa993b | 3891 | if (remote_debug) |
c906108c | 3892 | { |
0f71a2f6 | 3893 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3894 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3895 | pktcsum, csum); |
3896 | fputs_filtered (buf, gdb_stdlog); | |
3897 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3898 | } |
c2d11a7d JM |
3899 | /* Number of characters in buffer ignoring trailing |
3900 | NUL. */ | |
3901 | return -1; | |
c906108c SS |
3902 | } |
3903 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
3904 | { |
3905 | int repeat; | |
3906 | csum += c; | |
c906108c | 3907 | |
c2c6d25f JM |
3908 | if (remote_cisco_mode == 0) |
3909 | { | |
3910 | c = readchar (remote_timeout); | |
3911 | csum += c; | |
3912 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | /* Cisco's run-length encoding variant uses two | |
3917 | hex chars to represent the repeat count. */ | |
3918 | ||
3919 | c = readchar (remote_timeout); | |
3920 | csum += c; | |
3921 | repeat = fromhex (c) << 4; | |
3922 | c = readchar (remote_timeout); | |
3923 | csum += c; | |
3924 | repeat += fromhex (c); | |
3925 | } | |
c906108c | 3926 | |
c2d11a7d JM |
3927 | /* The character before ``*'' is repeated. */ |
3928 | ||
c2c6d25f | 3929 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
3930 | && bc > 0 |
3931 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 3932 | { |
c2d11a7d JM |
3933 | memset (&buf[bc], buf[bc - 1], repeat); |
3934 | bc += repeat; | |
c2c6d25f JM |
3935 | continue; |
3936 | } | |
3937 | ||
c2d11a7d | 3938 | buf[bc] = '\0'; |
c2c6d25f JM |
3939 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
3940 | puts_filtered (buf); | |
3941 | puts_filtered ("\n"); | |
c2d11a7d | 3942 | return -1; |
c2c6d25f | 3943 | } |
c906108c | 3944 | default: |
c2d11a7d | 3945 | if (bc < sizeof_buf - 1) |
c906108c | 3946 | { |
c2d11a7d | 3947 | buf[bc++] = c; |
c906108c SS |
3948 | csum += c; |
3949 | continue; | |
3950 | } | |
3951 | ||
c2d11a7d | 3952 | buf[bc] = '\0'; |
c906108c SS |
3953 | puts_filtered ("Remote packet too long: "); |
3954 | puts_filtered (buf); | |
3955 | puts_filtered ("\n"); | |
3956 | ||
c2d11a7d | 3957 | return -1; |
c906108c SS |
3958 | } |
3959 | } | |
3960 | } | |
3961 | ||
3962 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
3963 | store it in BUF. If FOREVER, wait forever rather than timing out; |
3964 | this is used (in synchronous mode) to wait for a target that is is | |
3965 | executing user code to stop. */ | |
d9fcf2fb JM |
3966 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
3967 | don't have to change all the calls to getpkt to deal with the | |
3968 | return value, because at the moment I don't know what the right | |
3969 | thing to do it for those. */ | |
c906108c | 3970 | void |
c2d11a7d JM |
3971 | getpkt (char *buf, |
3972 | long sizeof_buf, | |
3973 | int forever) | |
d9fcf2fb JM |
3974 | { |
3975 | int timed_out; | |
3976 | ||
3977 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
3978 | } | |
3979 | ||
3980 | ||
3981 | /* Read a packet from the remote machine, with error checking, and | |
3982 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
3983 | this is used (in synchronous mode) to wait for a target that is is | |
3984 | executing user code to stop. If FOREVER == 0, this function is | |
3985 | allowed to time out gracefully and return an indication of this to | |
3986 | the caller. */ | |
3987 | int | |
3988 | getpkt_sane (char *buf, | |
3989 | long sizeof_buf, | |
3990 | int forever) | |
c906108c SS |
3991 | { |
3992 | int c; | |
3993 | int tries; | |
3994 | int timeout; | |
3995 | int val; | |
3996 | ||
c5aa993b | 3997 | strcpy (buf, "timeout"); |
c906108c SS |
3998 | |
3999 | if (forever) | |
4000 | { | |
c906108c | 4001 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4002 | } |
4003 | ||
4004 | else | |
4005 | timeout = remote_timeout; | |
4006 | ||
4007 | #define MAX_TRIES 3 | |
4008 | ||
4009 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4010 | { | |
4011 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4012 | continuously, but if it pauses, we'll get a zero from readchar |
4013 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4014 | |
4015 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4016 | After that, we expect characters to arrive at a brisk pace. They |
4017 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4018 | |
4019 | do | |
4020 | { | |
4021 | c = readchar (timeout); | |
4022 | ||
4023 | if (c == SERIAL_TIMEOUT) | |
4024 | { | |
2acceee2 | 4025 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4026 | { |
2acceee2 | 4027 | QUIT; |
c906108c SS |
4028 | target_mourn_inferior (); |
4029 | error ("Watchdog has expired. Target detached.\n"); | |
4030 | } | |
c906108c | 4031 | if (remote_debug) |
0f71a2f6 | 4032 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4033 | goto retry; |
4034 | } | |
4035 | } | |
4036 | while (c != '$'); | |
4037 | ||
4038 | /* We've found the start of a packet, now collect the data. */ | |
4039 | ||
c2d11a7d | 4040 | val = read_frame (buf, sizeof_buf); |
c906108c | 4041 | |
c2d11a7d | 4042 | if (val >= 0) |
c906108c SS |
4043 | { |
4044 | if (remote_debug) | |
43e526b9 JM |
4045 | { |
4046 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4047 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4048 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4049 | } | |
c906108c | 4050 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 4051 | return 0; |
c906108c SS |
4052 | } |
4053 | ||
4054 | /* Try the whole thing again. */ | |
4055 | retry: | |
4056 | SERIAL_WRITE (remote_desc, "-", 1); | |
4057 | } | |
4058 | ||
4059 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4060 | ||
4061 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4062 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4063 | return 1; |
c906108c SS |
4064 | } |
4065 | \f | |
4066 | static void | |
fba45db2 | 4067 | remote_kill (void) |
c906108c SS |
4068 | { |
4069 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4070 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4071 | if (kill_kludge) | |
4072 | { | |
4073 | kill_kludge = 0; | |
4074 | target_mourn_inferior (); | |
4075 | return; | |
4076 | } | |
4077 | ||
4078 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4079 | speaking terms with the remote system. */ | |
c5aa993b | 4080 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4081 | |
4082 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4083 | we do or not. For the existing stubs, kill is a noop. */ | |
4084 | target_mourn_inferior (); | |
4085 | } | |
4086 | ||
43ff13b4 JM |
4087 | /* Async version of remote_kill. */ |
4088 | static void | |
fba45db2 | 4089 | remote_async_kill (void) |
43ff13b4 JM |
4090 | { |
4091 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4092 | if (target_is_async_p ()) |
c2c6d25f | 4093 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4094 | |
4095 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4096 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4097 | if (kill_kludge) | |
4098 | { | |
4099 | kill_kludge = 0; | |
4100 | target_mourn_inferior (); | |
4101 | return; | |
4102 | } | |
4103 | ||
4104 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4105 | speaking terms with the remote system. */ | |
c5aa993b | 4106 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4107 | |
4108 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4109 | we do or not. For the existing stubs, kill is a noop. */ | |
4110 | target_mourn_inferior (); | |
4111 | } | |
4112 | ||
c906108c | 4113 | static void |
fba45db2 | 4114 | remote_mourn (void) |
c906108c SS |
4115 | { |
4116 | remote_mourn_1 (&remote_ops); | |
4117 | } | |
4118 | ||
53a5351d | 4119 | static void |
fba45db2 | 4120 | remote_async_mourn (void) |
53a5351d JM |
4121 | { |
4122 | remote_mourn_1 (&remote_async_ops); | |
4123 | } | |
4124 | ||
c906108c | 4125 | static void |
fba45db2 | 4126 | extended_remote_mourn (void) |
c906108c SS |
4127 | { |
4128 | /* We do _not_ want to mourn the target like this; this will | |
4129 | remove the extended remote target from the target stack, | |
4130 | and the next time the user says "run" it'll fail. | |
4131 | ||
4132 | FIXME: What is the right thing to do here? */ | |
4133 | #if 0 | |
4134 | remote_mourn_1 (&extended_remote_ops); | |
4135 | #endif | |
4136 | } | |
4137 | ||
4138 | /* Worker function for remote_mourn. */ | |
4139 | static void | |
fba45db2 | 4140 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4141 | { |
4142 | unpush_target (target); | |
4143 | generic_mourn_inferior (); | |
4144 | } | |
4145 | ||
4146 | /* In the extended protocol we want to be able to do things like | |
4147 | "run" and have them basically work as expected. So we need | |
4148 | a special create_inferior function. | |
4149 | ||
4150 | FIXME: One day add support for changing the exec file | |
4151 | we're debugging, arguments and an environment. */ | |
4152 | ||
4153 | static void | |
fba45db2 | 4154 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4155 | { |
4156 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4157 | the remote server. */ | |
4158 | remove_breakpoints (); | |
4159 | ||
4160 | /* Now restart the remote server. */ | |
4161 | extended_remote_restart (); | |
4162 | ||
4163 | /* Now put the breakpoints back in. This way we're safe if the | |
4164 | restart function works via a unix fork on the remote side. */ | |
4165 | insert_breakpoints (); | |
4166 | ||
4167 | /* Clean up from the last time we were running. */ | |
4168 | clear_proceed_status (); | |
4169 | ||
4170 | /* Let the remote process run. */ | |
4171 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4172 | } | |
4173 | ||
43ff13b4 JM |
4174 | /* Async version of extended_remote_create_inferior. */ |
4175 | static void | |
fba45db2 | 4176 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4177 | { |
4178 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4179 | the remote server. */ | |
4180 | remove_breakpoints (); | |
4181 | ||
4182 | /* If running asynchronously, register the target file descriptor | |
4183 | with the event loop. */ | |
2acceee2 JM |
4184 | if (event_loop_p && target_can_async_p ()) |
4185 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4186 | |
4187 | /* Now restart the remote server. */ | |
4188 | extended_remote_restart (); | |
4189 | ||
4190 | /* Now put the breakpoints back in. This way we're safe if the | |
4191 | restart function works via a unix fork on the remote side. */ | |
4192 | insert_breakpoints (); | |
4193 | ||
4194 | /* Clean up from the last time we were running. */ | |
4195 | clear_proceed_status (); | |
4196 | ||
4197 | /* Let the remote process run. */ | |
4198 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4199 | } | |
c906108c | 4200 | \f |
c5aa993b | 4201 | |
c906108c SS |
4202 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4203 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4204 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4205 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4206 | the standard routines that are in mem-break.c. */ | |
4207 | ||
4208 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4209 | the choice of breakpoint instruction affects target program design and | |
4210 | vice versa, and by making it user-tweakable, the special code here | |
4211 | goes away and we need fewer special GDB configurations. */ | |
4212 | ||
4213 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4214 | #define REMOTE_BREAKPOINT | |
4215 | #endif | |
4216 | ||
4217 | #ifdef REMOTE_BREAKPOINT | |
4218 | ||
4219 | /* If the target isn't bi-endian, just pretend it is. */ | |
4220 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4221 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4222 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4223 | #endif | |
4224 | ||
4225 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4226 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4227 | ||
4228 | #endif /* REMOTE_BREAKPOINT */ | |
4229 | ||
4230 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4231 | support. We read the contents of the target location and stash it, | |
4232 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4233 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4234 | memory allocated for saving the target contents. It is guaranteed | |
4235 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4236 | is accomplished via BREAKPOINT_MAX). */ | |
4237 | ||
4238 | static int | |
fba45db2 | 4239 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
4240 | { |
4241 | #ifdef REMOTE_BREAKPOINT | |
4242 | int val; | |
96baa820 JM |
4243 | #endif |
4244 | int bp_size; | |
4245 | ||
d471ea57 AC |
4246 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4247 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4248 | fails, and the user has explicitly requested the Z support then | |
4249 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4250 | |
d471ea57 | 4251 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4252 | { |
e514a9d6 JM |
4253 | char *buf = alloca (PBUFSIZ); |
4254 | char *p = buf; | |
96baa820 JM |
4255 | |
4256 | addr = remote_address_masked (addr); | |
4257 | *(p++) = 'Z'; | |
4258 | *(p++) = '0'; | |
4259 | *(p++) = ','; | |
4260 | p += hexnumstr (p, (ULONGEST) addr); | |
4261 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4262 | sprintf (p, ",%d", bp_size); | |
4263 | ||
4264 | putpkt (buf); | |
c2d11a7d | 4265 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4266 | |
d471ea57 | 4267 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4268 | { |
d471ea57 AC |
4269 | case PACKET_ERROR: |
4270 | return -1; | |
4271 | case PACKET_OK: | |
4272 | return 0; | |
4273 | case PACKET_UNKNOWN: | |
4274 | break; | |
96baa820 JM |
4275 | } |
4276 | } | |
c906108c | 4277 | |
96baa820 | 4278 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4279 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4280 | ||
4281 | if (val == 0) | |
4282 | { | |
4283 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4284 | val = target_write_memory (addr, (char *) big_break_insn, | |
4285 | sizeof big_break_insn); | |
4286 | else | |
4287 | val = target_write_memory (addr, (char *) little_break_insn, | |
4288 | sizeof little_break_insn); | |
4289 | } | |
4290 | ||
4291 | return val; | |
4292 | #else | |
4293 | return memory_insert_breakpoint (addr, contents_cache); | |
4294 | #endif /* REMOTE_BREAKPOINT */ | |
4295 | } | |
4296 | ||
4297 | static int | |
fba45db2 | 4298 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4299 | { |
96baa820 JM |
4300 | int bp_size; |
4301 | ||
d471ea57 | 4302 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4303 | { |
e514a9d6 JM |
4304 | char *buf = alloca (PBUFSIZ); |
4305 | char *p = buf; | |
96baa820 JM |
4306 | |
4307 | *(p++) = 'z'; | |
4308 | *(p++) = '0'; | |
4309 | *(p++) = ','; | |
4310 | ||
4311 | addr = remote_address_masked (addr); | |
4312 | p += hexnumstr (p, (ULONGEST) addr); | |
4313 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4314 | sprintf (p, ",%d", bp_size); | |
4315 | ||
4316 | putpkt (buf); | |
c2d11a7d | 4317 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4318 | |
4319 | return (buf[0] == 'E'); | |
4320 | } | |
4321 | ||
c906108c SS |
4322 | #ifdef REMOTE_BREAKPOINT |
4323 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4324 | #else | |
4325 | return memory_remove_breakpoint (addr, contents_cache); | |
4326 | #endif /* REMOTE_BREAKPOINT */ | |
4327 | } | |
4328 | ||
d471ea57 AC |
4329 | static int |
4330 | watchpoint_to_Z_packet (int type) | |
4331 | { | |
4332 | switch (type) | |
4333 | { | |
4334 | case hw_write: | |
4335 | return 2; | |
4336 | break; | |
4337 | case hw_read: | |
4338 | return 3; | |
4339 | break; | |
4340 | case hw_access: | |
4341 | return 4; | |
4342 | break; | |
4343 | default: | |
4344 | internal_error ("hw_bp_to_z: bad watchpoint type %d", type); | |
4345 | } | |
4346 | } | |
4347 | ||
4348 | /* FIXME: This function should be static and a member of the remote | |
4349 | target vector. */ | |
4350 | ||
96baa820 | 4351 | int |
fba45db2 | 4352 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4353 | { |
e514a9d6 JM |
4354 | char *buf = alloca (PBUFSIZ); |
4355 | char *p; | |
d471ea57 | 4356 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4357 | |
d471ea57 AC |
4358 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4359 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4360 | remote_protocol_Z[packet].name, | |
4361 | remote_protocol_Z[packet].title); | |
96baa820 | 4362 | |
d471ea57 | 4363 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4364 | p = strchr (buf, '\0'); |
4365 | addr = remote_address_masked (addr); | |
4366 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4367 | sprintf (p, ",%x", len); |
96baa820 JM |
4368 | |
4369 | putpkt (buf); | |
c2d11a7d | 4370 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4371 | |
d471ea57 AC |
4372 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4373 | { | |
4374 | case PACKET_ERROR: | |
4375 | case PACKET_UNKNOWN: | |
4376 | return -1; | |
4377 | case PACKET_OK: | |
4378 | return 0; | |
4379 | } | |
4380 | internal_error ("remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4381 | } |
4382 | ||
d471ea57 AC |
4383 | /* FIXME: This function should be static and a member of the remote |
4384 | target vector. */ | |
4385 | ||
96baa820 | 4386 | int |
fba45db2 | 4387 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4388 | { |
e514a9d6 JM |
4389 | char *buf = alloca (PBUFSIZ); |
4390 | char *p; | |
d471ea57 AC |
4391 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4392 | ||
4393 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4394 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4395 | remote_protocol_Z[packet].name, | |
4396 | remote_protocol_Z[packet].title); | |
96baa820 | 4397 | |
d471ea57 | 4398 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4399 | p = strchr (buf, '\0'); |
4400 | addr = remote_address_masked (addr); | |
4401 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4402 | sprintf (p, ",%x", len); |
96baa820 | 4403 | putpkt (buf); |
c2d11a7d | 4404 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4405 | |
d471ea57 AC |
4406 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4407 | { | |
4408 | case PACKET_ERROR: | |
4409 | case PACKET_UNKNOWN: | |
4410 | return -1; | |
4411 | case PACKET_OK: | |
4412 | return 0; | |
4413 | } | |
4414 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4415 | } |
4416 | ||
d471ea57 AC |
4417 | /* FIXME: This function should be static and a member of the remote |
4418 | target vector. */ | |
4419 | ||
96baa820 | 4420 | int |
fba45db2 | 4421 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4422 | { |
e514a9d6 JM |
4423 | char *buf = alloca (PBUFSIZ); |
4424 | char *p = buf; | |
96baa820 | 4425 | |
d471ea57 AC |
4426 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4427 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4428 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4429 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4430 | ||
96baa820 JM |
4431 | *(p++) = 'Z'; |
4432 | *(p++) = '1'; | |
4433 | *(p++) = ','; | |
4434 | ||
4435 | addr = remote_address_masked (addr); | |
4436 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4437 | sprintf (p, ",%x", len); |
96baa820 JM |
4438 | |
4439 | putpkt (buf); | |
c2d11a7d | 4440 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4441 | |
d471ea57 AC |
4442 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4443 | { | |
4444 | case PACKET_ERROR: | |
4445 | case PACKET_UNKNOWN: | |
4446 | return -1; | |
4447 | case PACKET_OK: | |
4448 | return 0; | |
4449 | } | |
4450 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4451 | } |
4452 | ||
d471ea57 AC |
4453 | /* FIXME: This function should be static and a member of the remote |
4454 | target vector. */ | |
4455 | ||
96baa820 | 4456 | int |
fba45db2 | 4457 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4458 | { |
e514a9d6 JM |
4459 | char *buf = alloca (PBUFSIZ); |
4460 | char *p = buf; | |
96baa820 | 4461 | |
d471ea57 AC |
4462 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4463 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4464 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4465 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4466 | ||
96baa820 JM |
4467 | *(p++) = 'z'; |
4468 | *(p++) = '1'; | |
4469 | *(p++) = ','; | |
4470 | ||
4471 | addr = remote_address_masked (addr); | |
4472 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4473 | sprintf (p, ",%x", len); |
96baa820 JM |
4474 | |
4475 | putpkt(buf); | |
c2d11a7d | 4476 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4477 | |
d471ea57 AC |
4478 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4479 | { | |
4480 | case PACKET_ERROR: | |
4481 | case PACKET_UNKNOWN: | |
4482 | return -1; | |
4483 | case PACKET_OK: | |
4484 | return 0; | |
4485 | } | |
4486 | internal_error ("remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4487 | } |
96baa820 | 4488 | |
c906108c SS |
4489 | /* Some targets are only capable of doing downloads, and afterwards |
4490 | they switch to the remote serial protocol. This function provides | |
4491 | a clean way to get from the download target to the remote target. | |
4492 | It's basically just a wrapper so that we don't have to expose any | |
4493 | of the internal workings of remote.c. | |
4494 | ||
4495 | Prior to calling this routine, you should shutdown the current | |
4496 | target code, else you will get the "A program is being debugged | |
4497 | already..." message. Usually a call to pop_target() suffices. */ | |
4498 | ||
4499 | void | |
fba45db2 | 4500 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4501 | { |
4502 | printf_filtered ("Switching to remote protocol\n"); | |
4503 | remote_open (name, from_tty); | |
4504 | } | |
4505 | ||
4506 | /* Other targets want to use the entire remote serial module but with | |
4507 | certain remote_ops overridden. */ | |
4508 | ||
4509 | void | |
fba45db2 KB |
4510 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4511 | int extended_p) | |
c906108c SS |
4512 | { |
4513 | printf_filtered ("Selecting the %sremote protocol\n", | |
4514 | (extended_p ? "extended-" : "")); | |
4515 | remote_open_1 (name, from_tty, target, extended_p); | |
4516 | } | |
4517 | ||
4518 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4519 | ||
c5aa993b JM |
4520 | static unsigned long crc32_table[256] = |
4521 | {0, 0}; | |
c906108c SS |
4522 | |
4523 | static unsigned long | |
fba45db2 | 4524 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4525 | { |
c5aa993b | 4526 | if (!crc32_table[1]) |
c906108c SS |
4527 | { |
4528 | /* Initialize the CRC table and the decoding table. */ | |
4529 | int i, j; | |
4530 | unsigned int c; | |
4531 | ||
4532 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4533 | { |
4534 | for (c = i << 24, j = 8; j > 0; --j) | |
4535 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4536 | crc32_table[i] = c; | |
4537 | } | |
c906108c SS |
4538 | } |
4539 | ||
4540 | while (len--) | |
4541 | { | |
4542 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4543 | buf++; | |
4544 | } | |
4545 | return crc; | |
4546 | } | |
4547 | ||
4548 | /* compare-sections command | |
4549 | ||
4550 | With no arguments, compares each loadable section in the exec bfd | |
4551 | with the same memory range on the target, and reports mismatches. | |
4552 | Useful for verifying the image on the target against the exec file. | |
4553 | Depends on the target understanding the new "qCRC:" request. */ | |
4554 | ||
e514a9d6 JM |
4555 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4556 | target method (target verify memory) and generic version of the | |
4557 | actual command. This will allow other high-level code (especially | |
4558 | generic_load()) to make use of this target functionality. */ | |
4559 | ||
c906108c | 4560 | static void |
fba45db2 | 4561 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
4562 | { |
4563 | asection *s; | |
4564 | unsigned long host_crc, target_crc; | |
4565 | extern bfd *exec_bfd; | |
4566 | struct cleanup *old_chain; | |
085dd6e6 JM |
4567 | char *tmp; |
4568 | char *sectdata; | |
4569 | char *sectname; | |
4570 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4571 | bfd_size_type size; |
4572 | bfd_vma lma; | |
4573 | int matched = 0; | |
4574 | int mismatched = 0; | |
4575 | ||
4576 | if (!exec_bfd) | |
4577 | error ("command cannot be used without an exec file"); | |
4578 | if (!current_target.to_shortname || | |
4579 | strcmp (current_target.to_shortname, "remote") != 0) | |
4580 | error ("command can only be used with remote target"); | |
4581 | ||
c5aa993b | 4582 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4583 | { |
4584 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4585 | continue; /* skip non-loadable section */ |
c906108c SS |
4586 | |
4587 | size = bfd_get_section_size_before_reloc (s); | |
4588 | if (size == 0) | |
c5aa993b | 4589 | continue; /* skip zero-length section */ |
c906108c SS |
4590 | |
4591 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4592 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4593 | continue; /* not the section selected by user */ |
c906108c | 4594 | |
c5aa993b | 4595 | matched = 1; /* do this section */ |
c906108c SS |
4596 | lma = s->lma; |
4597 | /* FIXME: assumes lma can fit into long */ | |
4598 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4599 | putpkt (buf); | |
4600 | ||
4601 | /* be clever; compute the host_crc before waiting for target reply */ | |
4602 | sectdata = xmalloc (size); | |
b8c9b27d | 4603 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4604 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4605 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4606 | ||
c2d11a7d | 4607 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4608 | if (buf[0] == 'E') |
4609 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4610 | sectname, lma, lma + size); | |
4611 | if (buf[0] != 'C') | |
4612 | error ("remote target does not support this operation"); | |
4613 | ||
4614 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4615 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4616 | ||
d4f3574e SS |
4617 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4618 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4619 | if (host_crc == target_crc) |
4620 | printf_filtered ("matched.\n"); | |
4621 | else | |
c5aa993b JM |
4622 | { |
4623 | printf_filtered ("MIS-MATCHED!\n"); | |
4624 | mismatched++; | |
4625 | } | |
c906108c SS |
4626 | |
4627 | do_cleanups (old_chain); | |
4628 | } | |
4629 | if (mismatched > 0) | |
4630 | warning ("One or more sections of the remote executable does not match\n\ | |
4631 | the loaded file\n"); | |
4632 | if (args && !matched) | |
4633 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4634 | } | |
4635 | ||
4636 | static int | |
fba45db2 | 4637 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c SS |
4638 | { |
4639 | int i; | |
085dd6e6 | 4640 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4641 | char *p2 = &buf2[0]; |
c906108c | 4642 | |
c5aa993b | 4643 | if (!bufsiz) |
c906108c SS |
4644 | error ("null pointer to remote bufer size specified"); |
4645 | ||
cce74817 | 4646 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4647 | the caller know and return what the minimum size is */ |
4648 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4649 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4650 | { |
4651 | *bufsiz = PBUFSIZ; | |
4652 | return -1; | |
4653 | } | |
4654 | ||
4655 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4656 | if (!remote_desc) |
c906108c SS |
4657 | error ("remote query is only available after target open"); |
4658 | ||
4659 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4660 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4661 | error ("invalid remote query type"); |
4662 | ||
c5aa993b | 4663 | if (!buf) |
c906108c SS |
4664 | error ("null remote query specified"); |
4665 | ||
c5aa993b | 4666 | if (!outbuf) |
c906108c SS |
4667 | error ("remote query requires a buffer to receive data"); |
4668 | ||
4669 | outbuf[0] = '\0'; | |
4670 | ||
4671 | *p2++ = 'q'; | |
4672 | *p2++ = query_type; | |
4673 | ||
4674 | /* we used one buffer char for the remote protocol q command and another | |
4675 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4676 | plus one extra in case we are debugging (remote_debug), | |
4677 | we have PBUFZIZ - 7 left to pack the query string */ | |
4678 | i = 0; | |
c5aa993b | 4679 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4680 | { |
4681 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4682 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4683 | error ("illegal characters in query string"); | |
c906108c SS |
4684 | |
4685 | *p2++ = buf[i]; | |
4686 | i++; | |
4687 | } | |
4688 | *p2 = buf[i]; | |
4689 | ||
c5aa993b | 4690 | if (buf[i]) |
c906108c SS |
4691 | error ("query larger than available buffer"); |
4692 | ||
4693 | i = putpkt (buf2); | |
c5aa993b JM |
4694 | if (i < 0) |
4695 | return i; | |
c906108c | 4696 | |
c2d11a7d | 4697 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4698 | |
4699 | return 0; | |
4700 | } | |
4701 | ||
96baa820 JM |
4702 | static void |
4703 | remote_rcmd (char *command, | |
d9fcf2fb | 4704 | struct ui_file *outbuf) |
96baa820 JM |
4705 | { |
4706 | int i; | |
4707 | char *buf = alloca (PBUFSIZ); | |
4708 | char *p = buf; | |
4709 | ||
4710 | if (!remote_desc) | |
4711 | error ("remote rcmd is only available after target open"); | |
4712 | ||
7be570e7 JM |
4713 | /* Send a NULL command across as an empty command */ |
4714 | if (command == NULL) | |
4715 | command = ""; | |
4716 | ||
96baa820 JM |
4717 | /* The query prefix */ |
4718 | strcpy (buf, "qRcmd,"); | |
4719 | p = strchr (buf, '\0'); | |
4720 | ||
4721 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4722 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4723 | ||
4724 | /* Encode the actual command */ | |
4725 | for (i = 0; command[i]; i++) | |
4726 | { | |
4727 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4728 | *p++ = tohex (command[i] & 0xf); | |
4729 | } | |
4730 | *p = '\0'; | |
4731 | ||
4732 | if (putpkt (buf) < 0) | |
4733 | error ("Communication problem with target\n"); | |
4734 | ||
4735 | /* get/display the response */ | |
4736 | while (1) | |
4737 | { | |
4738 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4739 | buf[0] = '\0'; | |
c2d11a7d | 4740 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4741 | if (buf[0] == '\0') |
4742 | error ("Target does not support this command\n"); | |
4743 | if (buf[0] == 'O' && buf[1] != 'K') | |
4744 | { | |
4745 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4746 | continue; | |
4747 | } | |
4748 | if (strcmp (buf, "OK") == 0) | |
4749 | break; | |
7be570e7 JM |
4750 | if (strlen (buf) == 3 && buf[0] == 'E' |
4751 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4752 | { | |
4753 | error ("Protocol error with Rcmd"); | |
4754 | } | |
96baa820 JM |
4755 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4756 | { | |
4757 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4758 | fputc_unfiltered (c, outbuf); | |
4759 | } | |
4760 | break; | |
4761 | } | |
4762 | } | |
4763 | ||
c906108c | 4764 | static void |
fba45db2 | 4765 | packet_command (char *args, int from_tty) |
c906108c | 4766 | { |
085dd6e6 | 4767 | char *buf = alloca (PBUFSIZ); |
c906108c | 4768 | |
c5aa993b | 4769 | if (!remote_desc) |
c906108c SS |
4770 | error ("command can only be used with remote target"); |
4771 | ||
c5aa993b | 4772 | if (!args) |
c906108c SS |
4773 | error ("remote-packet command requires packet text as argument"); |
4774 | ||
4775 | puts_filtered ("sending: "); | |
4776 | print_packet (args); | |
4777 | puts_filtered ("\n"); | |
4778 | putpkt (args); | |
4779 | ||
c2d11a7d | 4780 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4781 | puts_filtered ("received: "); |
4782 | print_packet (buf); | |
4783 | puts_filtered ("\n"); | |
4784 | } | |
4785 | ||
4786 | #if 0 | |
4787 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4788 | ||
a14ed312 | 4789 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4790 | |
a14ed312 | 4791 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4792 | |
a14ed312 | 4793 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4794 | |
a14ed312 | 4795 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4796 | |
a14ed312 | 4797 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4798 | |
a14ed312 | 4799 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4800 | |
a14ed312 | 4801 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 4802 | |
a14ed312 | 4803 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4804 | |
a14ed312 | 4805 | static void init_remote_threadtests (void); |
c906108c | 4806 | |
c5aa993b | 4807 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4808 | |
4809 | static void | |
fba45db2 | 4810 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
4811 | { |
4812 | int sample_thread = SAMPLE_THREAD; | |
4813 | ||
4814 | printf_filtered ("Remote threadset test\n"); | |
4815 | set_thread (sample_thread, 1); | |
4816 | } | |
4817 | ||
4818 | ||
4819 | static void | |
fba45db2 | 4820 | threadalive_test (char *cmd, int tty) |
c906108c SS |
4821 | { |
4822 | int sample_thread = SAMPLE_THREAD; | |
4823 | ||
4824 | if (remote_thread_alive (sample_thread)) | |
4825 | printf_filtered ("PASS: Thread alive test\n"); | |
4826 | else | |
4827 | printf_filtered ("FAIL: Thread alive test\n"); | |
4828 | } | |
4829 | ||
a14ed312 | 4830 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
4831 | |
4832 | void | |
fba45db2 | 4833 | output_threadid (char *title, threadref *ref) |
c906108c SS |
4834 | { |
4835 | char hexid[20]; | |
4836 | ||
4837 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4838 | hexid[16] = 0; | |
4839 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4840 | } | |
4841 | ||
4842 | static void | |
fba45db2 | 4843 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
4844 | { |
4845 | int startflag = 1; | |
4846 | threadref nextthread; | |
4847 | int done, result_count; | |
4848 | threadref threadlist[3]; | |
4849 | ||
4850 | printf_filtered ("Remote Threadlist test\n"); | |
4851 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4852 | &result_count, &threadlist[0])) | |
4853 | printf_filtered ("FAIL: threadlist test\n"); | |
4854 | else | |
4855 | { | |
4856 | threadref *scan = threadlist; | |
4857 | threadref *limit = scan + result_count; | |
4858 | ||
4859 | while (scan < limit) | |
4860 | output_threadid (" thread ", scan++); | |
4861 | } | |
4862 | } | |
4863 | ||
4864 | void | |
fba45db2 | 4865 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
4866 | { |
4867 | output_threadid ("Threadid: ", &info->threadid); | |
4868 | printf_filtered ("Name: %s\n ", info->shortname); | |
4869 | printf_filtered ("State: %s\n", info->display); | |
4870 | printf_filtered ("other: %s\n\n", info->more_display); | |
4871 | } | |
4872 | ||
4873 | int | |
fba45db2 | 4874 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
4875 | { |
4876 | int result; | |
4877 | int set; | |
4878 | struct gdb_ext_thread_info threadinfo; | |
4879 | ||
4880 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4881 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4882 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4883 | display_thread_info (&threadinfo); | |
4884 | return result; | |
4885 | } | |
4886 | ||
4887 | static void | |
fba45db2 | 4888 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
4889 | { |
4890 | int athread = SAMPLE_THREAD; | |
4891 | threadref thread; | |
4892 | int set; | |
4893 | ||
4894 | int_to_threadref (&thread, athread); | |
4895 | printf_filtered ("Remote Threadinfo test\n"); | |
4896 | if (!get_and_display_threadinfo (&thread)) | |
4897 | printf_filtered ("FAIL cannot get thread info\n"); | |
4898 | } | |
4899 | ||
4900 | static int | |
fba45db2 | 4901 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
4902 | { |
4903 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4904 | return get_and_display_threadinfo (ref); | |
4905 | } | |
4906 | ||
4907 | static void | |
fba45db2 | 4908 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
4909 | { |
4910 | printf_filtered ("Remote Threadlist update test\n"); | |
4911 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4912 | } | |
4913 | ||
4914 | static void | |
4915 | init_remote_threadtests (void) | |
4916 | { | |
4917 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4918 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4919 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4920 | "Fetch and display info about one thread"); | |
4921 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4922 | "Test setting to a different thread"); | |
4923 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4924 | "Iterate through updating all remote thread info"); | |
4925 | add_com ("talive", class_obscure, threadalive_test, | |
4926 | " Remote thread alive test "); | |
4927 | } | |
4928 | ||
4929 | #endif /* 0 */ | |
4930 | ||
4931 | static void | |
fba45db2 | 4932 | init_remote_ops (void) |
c906108c | 4933 | { |
c5aa993b | 4934 | remote_ops.to_shortname = "remote"; |
c906108c | 4935 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4936 | remote_ops.to_doc = |
c906108c | 4937 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
4938 | Specify the serial device it is connected to\n\ |
4939 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
4940 | remote_ops.to_open = remote_open; |
4941 | remote_ops.to_close = remote_close; | |
c906108c | 4942 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4943 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4944 | remote_ops.to_wait = remote_wait; |
4945 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4946 | remote_ops.to_store_registers = remote_store_registers; | |
4947 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4948 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4949 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4950 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4951 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4952 | remote_ops.to_kill = remote_kill; |
4953 | remote_ops.to_load = generic_load; | |
c906108c SS |
4954 | remote_ops.to_mourn_inferior = remote_mourn; |
4955 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4956 | remote_ops.to_find_new_threads = remote_threads_info; |
9d1f7ab2 | 4957 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
4958 | remote_ops.to_stop = remote_stop; |
4959 | remote_ops.to_query = remote_query; | |
96baa820 | 4960 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 4961 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
4962 | remote_ops.to_has_all_memory = 1; |
4963 | remote_ops.to_has_memory = 1; | |
4964 | remote_ops.to_has_stack = 1; | |
4965 | remote_ops.to_has_registers = 1; | |
4966 | remote_ops.to_has_execution = 1; | |
4967 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4968 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4969 | } |
4970 | ||
4971 | /* Set up the extended remote vector by making a copy of the standard | |
4972 | remote vector and adding to it. */ | |
4973 | ||
4974 | static void | |
fba45db2 | 4975 | init_extended_remote_ops (void) |
c906108c SS |
4976 | { |
4977 | extended_remote_ops = remote_ops; | |
4978 | ||
0f71a2f6 | 4979 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4980 | extended_remote_ops.to_longname = |
c906108c | 4981 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4982 | extended_remote_ops.to_doc = |
c906108c SS |
4983 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4984 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4985 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4986 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4987 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4988 | } |
4989 | ||
4990 | /* | |
4991 | * Command: info remote-process | |
4992 | * | |
4993 | * This implements Cisco's version of the "info proc" command. | |
4994 | * | |
4995 | * This query allows the target stub to return an arbitrary string | |
4996 | * (or strings) giving arbitrary information about the target process. | |
4997 | * This is optional; the target stub isn't required to implement it. | |
4998 | * | |
4999 | * Syntax: qfProcessInfo request first string | |
5000 | * qsProcessInfo request subsequent string | |
5001 | * reply: 'O'<hex-encoded-string> | |
5002 | * 'l' last reply (empty) | |
5003 | */ | |
5004 | ||
5005 | static void | |
c2d11a7d | 5006 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5007 | { |
085dd6e6 | 5008 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
5009 | |
5010 | if (remote_desc == 0) | |
5011 | error ("Command can only be used when connected to the remote target."); | |
5012 | ||
5013 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 5014 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 5015 | if (buf[0] == 0) |
c5aa993b | 5016 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5017 | |
5018 | if (buf[0] == 'E') | |
5019 | error ("info proc: target error."); | |
5020 | ||
c5aa993b | 5021 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5022 | { |
5023 | remote_console_output (&buf[1]); | |
5024 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 5025 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
5026 | } |
5027 | } | |
5028 | ||
5029 | /* | |
5030 | * Target Cisco | |
5031 | */ | |
5032 | ||
5033 | static void | |
c2d11a7d | 5034 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5035 | { |
5036 | if (name == 0) | |
5037 | error ( | |
c5aa993b | 5038 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5039 | device is attached to the remote system (e.g. host:port)."); |
5040 | ||
6426a772 JM |
5041 | /* See FIXME above */ |
5042 | wait_forever_enabled_p = 1; | |
5043 | ||
0f71a2f6 JM |
5044 | target_preopen (from_tty); |
5045 | ||
5046 | unpush_target (&remote_cisco_ops); | |
5047 | ||
0f71a2f6 JM |
5048 | remote_desc = SERIAL_OPEN (name); |
5049 | if (!remote_desc) | |
5050 | perror_with_name (name); | |
5051 | ||
5052 | /* | |
5053 | * If a baud rate was specified on the gdb command line it will | |
5054 | * be greater than the initial value of -1. If it is, use it otherwise | |
5055 | * default to 9600 | |
5056 | */ | |
5057 | ||
5058 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5059 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5060 | { |
5061 | SERIAL_CLOSE (remote_desc); | |
5062 | perror_with_name (name); | |
5063 | } | |
5064 | ||
5065 | SERIAL_RAW (remote_desc); | |
5066 | ||
5067 | /* If there is something sitting in the buffer we might take it as a | |
5068 | response to a command, which would be bad. */ | |
5069 | SERIAL_FLUSH_INPUT (remote_desc); | |
5070 | ||
5071 | if (from_tty) | |
5072 | { | |
5073 | puts_filtered ("Remote debugging using "); | |
5074 | puts_filtered (name); | |
5075 | puts_filtered ("\n"); | |
5076 | } | |
5077 | ||
5078 | remote_cisco_mode = 1; | |
5079 | ||
5080 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5081 | ||
d471ea57 | 5082 | init_all_packet_configs (); |
0f71a2f6 | 5083 | |
c5aa993b | 5084 | general_thread = -2; |
0f71a2f6 JM |
5085 | continue_thread = -2; |
5086 | ||
9d1f7ab2 MS |
5087 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5088 | use_threadinfo_query = 1; | |
5089 | use_threadextra_query = 1; | |
5090 | ||
0f71a2f6 JM |
5091 | /* Without this, some commands which require an active target (such |
5092 | as kill) won't work. This variable serves (at least) double duty | |
5093 | as both the pid of the target process (if it has such), and as a | |
5094 | flag indicating that a target is active. These functions should | |
5095 | be split out into seperate variables, especially since GDB will | |
5096 | someday have a notion of debugging several processes. */ | |
5097 | inferior_pid = MAGIC_NULL_PID; | |
5098 | ||
5099 | /* Start the remote connection; if error (0), discard this target. */ | |
5100 | ||
c5aa993b JM |
5101 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5102 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5103 | RETURN_MASK_ALL)) |
5104 | { | |
5105 | pop_target (); | |
5106 | return; | |
5107 | } | |
5108 | } | |
5109 | ||
5110 | static void | |
c2d11a7d | 5111 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5112 | { |
5113 | remote_cisco_mode = 0; | |
5114 | remote_close (quitting); | |
5115 | } | |
5116 | ||
c5aa993b | 5117 | static void |
8ab86381 | 5118 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5119 | { |
5120 | remote_mourn_1 (&remote_cisco_ops); | |
5121 | } | |
5122 | ||
c5aa993b JM |
5123 | enum |
5124 | { | |
5125 | READ_MORE, | |
5126 | FATAL_ERROR, | |
5127 | ENTER_DEBUG, | |
0f71a2f6 | 5128 | DISCONNECT_TELNET |
c5aa993b JM |
5129 | } |
5130 | minitelnet_return; | |
0f71a2f6 JM |
5131 | |
5132 | /* shared between readsocket() and readtty() */ | |
5133 | static char *tty_input; | |
5134 | ||
5135 | static int escape_count; | |
5136 | static int echo_check; | |
5137 | extern int quit_flag; | |
5138 | ||
5139 | static int | |
c2d11a7d | 5140 | readsocket (void) |
0f71a2f6 JM |
5141 | { |
5142 | int data; | |
5143 | ||
5144 | /* Loop until the socket doesn't have any more data */ | |
5145 | ||
c5aa993b | 5146 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5147 | { |
5148 | /* Check for the escape sequence */ | |
c5aa993b | 5149 | if (data == '|') |
0f71a2f6 JM |
5150 | { |
5151 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5152 | if (++escape_count == 4) |
0f71a2f6 JM |
5153 | { |
5154 | return ENTER_DEBUG; | |
5155 | } | |
c5aa993b JM |
5156 | else |
5157 | { /* This is a '|', but not the fourth in a row. | |
5158 | Continue without echoing it. If it isn't actually | |
5159 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5160 | continue; |
5161 | } | |
5162 | } | |
c5aa993b JM |
5163 | else |
5164 | /* Not a '|' */ | |
5165 | { | |
0f71a2f6 JM |
5166 | /* Ensure any pending '|'s are flushed. */ |
5167 | ||
c5aa993b JM |
5168 | for (; escape_count > 0; escape_count--) |
5169 | putchar ('|'); | |
0f71a2f6 | 5170 | } |
0f71a2f6 | 5171 | |
c5aa993b JM |
5172 | if (data == '\r') /* If this is a return character, */ |
5173 | continue; /* - just supress it. */ | |
5174 | ||
5175 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5176 | { |
5177 | if (tty_input[echo_check] == data) | |
5178 | { | |
c5aa993b JM |
5179 | echo_check++; /* Character matched user input: */ |
5180 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5181 | } |
c5aa993b JM |
5182 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5183 | { /* End of the line (and of echo checking). */ | |
5184 | echo_check = -1; /* No more echo supression */ | |
5185 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5186 | } |
5187 | else | |
c5aa993b JM |
5188 | { /* Failed check for echo of user input. |
5189 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5190 | int j; |
5191 | ||
c5aa993b | 5192 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5193 | putchar (tty_input[j]); |
5194 | echo_check = -1; | |
5195 | } | |
5196 | } | |
c5aa993b | 5197 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5198 | } |
5199 | ||
c5aa993b JM |
5200 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5201 | return READ_MORE; /* Try to read some more */ | |
5202 | else | |
5203 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5204 | } |
5205 | ||
5206 | static int | |
c2d11a7d | 5207 | readtty (void) |
0f71a2f6 | 5208 | { |
0f71a2f6 JM |
5209 | int tty_bytecount; |
5210 | ||
5211 | /* First, read a buffer full from the terminal */ | |
5212 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5213 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5214 | { |
5215 | perror ("readtty: read failed"); | |
5216 | return FATAL_ERROR; | |
5217 | } | |
5218 | ||
5219 | /* Remove a quoted newline. */ | |
5220 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5221 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5222 | { | |
c5aa993b JM |
5223 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5224 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5225 | } |
5226 | ||
5227 | /* Turn trailing newlines into returns */ | |
5228 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5229 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5230 | |
5231 | /* If the line consists of a ~, enter debugging mode. */ | |
5232 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5233 | return ENTER_DEBUG; | |
5234 | ||
5235 | /* Make this a zero terminated string and write it out */ | |
5236 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5237 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5238 | { |
5239 | perror_with_name ("readtty: write failed"); | |
5240 | return FATAL_ERROR; | |
5241 | } | |
5242 | ||
5243 | return READ_MORE; | |
5244 | } | |
5245 | ||
5246 | static int | |
c2d11a7d | 5247 | minitelnet (void) |
0f71a2f6 JM |
5248 | { |
5249 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5250 | int tablesize; /* max number of FDs for select */ |
5251 | int status; | |
5252 | int quit_count = 0; | |
0f71a2f6 JM |
5253 | |
5254 | extern int escape_count; /* global shared by readsocket */ | |
5255 | extern int echo_check; /* ditto */ | |
5256 | ||
5257 | escape_count = 0; | |
c5aa993b | 5258 | echo_check = -1; |
0f71a2f6 JM |
5259 | |
5260 | tablesize = 8 * sizeof (input); | |
5261 | ||
c5aa993b | 5262 | for (;;) |
0f71a2f6 JM |
5263 | { |
5264 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5265 | this must be done *before* the select as there may be |
5266 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5267 | |
c5aa993b | 5268 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5269 | { |
5270 | error ("Debugging terminated by communications error"); | |
5271 | } | |
c5aa993b | 5272 | else if (status != READ_MORE) |
0f71a2f6 JM |
5273 | { |
5274 | return (status); | |
5275 | } | |
5276 | ||
c5aa993b | 5277 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5278 | |
5279 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5280 | |
0f71a2f6 | 5281 | FD_ZERO (&input); |
c5aa993b | 5282 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5283 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5284 | |
5285 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5286 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5287 | { |
5288 | error ("Communications error on select %d", errno); | |
5289 | } | |
5290 | ||
5291 | /* Handle Control-C typed */ | |
5292 | ||
c5aa993b | 5293 | if (quit_flag) |
0f71a2f6 JM |
5294 | { |
5295 | if ((++quit_count) == 2) | |
5296 | { | |
5297 | if (query ("Interrupt GDB? ")) | |
5298 | { | |
5299 | printf_filtered ("Interrupted by user.\n"); | |
5300 | return_to_top_level (RETURN_QUIT); | |
5301 | } | |
5302 | quit_count = 0; | |
5303 | } | |
5304 | quit_flag = 0; | |
5305 | ||
5306 | if (remote_break) | |
5307 | SERIAL_SEND_BREAK (remote_desc); | |
5308 | else | |
5309 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5310 | ||
5311 | continue; | |
5312 | } | |
5313 | ||
5314 | /* Handle console input */ | |
5315 | ||
c5aa993b | 5316 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5317 | { |
5318 | quit_count = 0; | |
5319 | echo_check = 0; | |
5320 | status = readtty (); | |
5321 | if (status == READ_MORE) | |
5322 | continue; | |
5323 | ||
5324 | return status; /* telnet session ended */ | |
5325 | } | |
5326 | } | |
5327 | } | |
5328 | ||
5329 | static int | |
c2d11a7d | 5330 | remote_cisco_wait (int pid, struct target_waitstatus *status) |
0f71a2f6 | 5331 | { |
c5aa993b | 5332 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5333 | { |
5334 | error ("Debugging session terminated by protocol error"); | |
5335 | } | |
5336 | putpkt ("?"); | |
5337 | return remote_wait (pid, status); | |
5338 | } | |
5339 | ||
5340 | static void | |
fba45db2 | 5341 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5342 | { |
5343 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5344 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5345 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5346 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5347 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5348 | remote_cisco_ops.to_open = remote_cisco_open; |
5349 | remote_cisco_ops.to_close = remote_cisco_close; | |
5350 | remote_cisco_ops.to_detach = remote_detach; | |
5351 | remote_cisco_ops.to_resume = remote_resume; | |
5352 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5353 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5354 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5355 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5356 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5357 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5358 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5359 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5360 | remote_cisco_ops.to_kill = remote_kill; |
5361 | remote_cisco_ops.to_load = generic_load; | |
5362 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5363 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5364 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5365 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c5aa993b JM |
5366 | remote_cisco_ops.to_stratum = process_stratum; |
5367 | remote_cisco_ops.to_has_all_memory = 1; | |
5368 | remote_cisco_ops.to_has_memory = 1; | |
5369 | remote_cisco_ops.to_has_stack = 1; | |
5370 | remote_cisco_ops.to_has_registers = 1; | |
5371 | remote_cisco_ops.to_has_execution = 1; | |
5372 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5373 | } |
5374 | ||
6426a772 JM |
5375 | static int |
5376 | remote_can_async_p (void) | |
5377 | { | |
5378 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5379 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5380 | } |
5381 | ||
5382 | static int | |
5383 | remote_is_async_p (void) | |
5384 | { | |
5385 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5386 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5387 | } |
5388 | ||
2acceee2 JM |
5389 | /* Pass the SERIAL event on and up to the client. One day this code |
5390 | will be able to delay notifying the client of an event until the | |
5391 | point where an entire packet has been received. */ | |
5392 | ||
5393 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5394 | static void *async_client_context; | |
5395 | static serial_event_ftype remote_async_serial_handler; | |
5396 | ||
6426a772 | 5397 | static void |
2acceee2 | 5398 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5399 | { |
2acceee2 JM |
5400 | /* Don't propogate error information up to the client. Instead let |
5401 | the client find out about the error by querying the target. */ | |
5402 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5403 | } | |
5404 | ||
5405 | static void | |
5406 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5407 | { | |
ed9a39eb JM |
5408 | if (current_target.to_async_mask_value == 0) |
5409 | internal_error ("Calling remote_async when async is masked"); | |
5410 | ||
2acceee2 JM |
5411 | if (callback != NULL) |
5412 | { | |
5413 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5414 | async_client_callback = callback; | |
5415 | async_client_context = context; | |
5416 | } | |
5417 | else | |
5418 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5419 | } |
5420 | ||
43ff13b4 JM |
5421 | /* Target async and target extended-async. |
5422 | ||
5423 | This are temporary targets, until it is all tested. Eventually | |
5424 | async support will be incorporated int the usual 'remote' | |
5425 | target. */ | |
5426 | ||
5427 | static void | |
c2d11a7d | 5428 | init_remote_async_ops (void) |
43ff13b4 JM |
5429 | { |
5430 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5431 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5432 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5433 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5434 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5435 | remote_async_ops.to_open = remote_async_open; |
5436 | remote_async_ops.to_close = remote_close; | |
5437 | remote_async_ops.to_detach = remote_async_detach; | |
5438 | remote_async_ops.to_resume = remote_async_resume; | |
5439 | remote_async_ops.to_wait = remote_async_wait; | |
5440 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5441 | remote_async_ops.to_store_registers = remote_store_registers; | |
5442 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5443 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5444 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5445 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5446 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5447 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5448 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5449 | remote_async_ops.to_kill = remote_async_kill; |
5450 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5451 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5452 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5453 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5454 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
43ff13b4 JM |
5455 | remote_async_ops.to_stop = remote_stop; |
5456 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5457 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5458 | remote_async_ops.to_stratum = process_stratum; |
5459 | remote_async_ops.to_has_all_memory = 1; | |
5460 | remote_async_ops.to_has_memory = 1; | |
5461 | remote_async_ops.to_has_stack = 1; | |
5462 | remote_async_ops.to_has_registers = 1; | |
5463 | remote_async_ops.to_has_execution = 1; | |
5464 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5465 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5466 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5467 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5468 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5469 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5470 | } |
5471 | ||
5472 | /* Set up the async extended remote vector by making a copy of the standard | |
5473 | remote vector and adding to it. */ | |
5474 | ||
5475 | static void | |
c2d11a7d | 5476 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5477 | { |
5478 | extended_async_remote_ops = remote_async_ops; | |
5479 | ||
5480 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5481 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5482 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5483 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5484 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5485 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5486 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5487 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5488 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5489 | } | |
5490 | ||
5a2468f5 | 5491 | static void |
c2d11a7d | 5492 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5493 | { |
5494 | ||
5495 | } | |
5496 | ||
d471ea57 AC |
5497 | static void |
5498 | show_remote_cmd (char *args, int from_tty) | |
5499 | { | |
5500 | show_remote_protocol_Z_packet_cmd (args, from_tty); | |
5501 | show_remote_protocol_P_packet_cmd (args, from_tty); | |
5502 | show_remote_protocol_binary_download_cmd (args, from_tty); | |
5503 | } | |
5a2468f5 | 5504 | |
0f71a2f6 | 5505 | static void |
fba45db2 | 5506 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5507 | { |
11cf8741 JM |
5508 | build_remote_packet_sizes (); |
5509 | ||
5510 | /* Cisco stuff */ | |
0f71a2f6 | 5511 | tty_input = xmalloc (PBUFSIZ); |
11cf8741 | 5512 | remote_address_size = TARGET_PTR_BIT; |
0f71a2f6 JM |
5513 | } |
5514 | ||
c906108c | 5515 | void |
fba45db2 | 5516 | _initialize_remote (void) |
c906108c | 5517 | { |
5a2468f5 JM |
5518 | static struct cmd_list_element *remote_set_cmdlist; |
5519 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5520 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5521 | |
0f71a2f6 JM |
5522 | /* architecture specific data */ |
5523 | build_remote_gdbarch_data (); | |
5524 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5525 | register_remote_packet_sizes (); |
5526 | register_gdbarch_swap (&remote_address_size, | |
5527 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5528 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5529 | ||
c906108c SS |
5530 | init_remote_ops (); |
5531 | add_target (&remote_ops); | |
5532 | ||
5533 | init_extended_remote_ops (); | |
5534 | add_target (&extended_remote_ops); | |
cce74817 | 5535 | |
43ff13b4 JM |
5536 | init_remote_async_ops (); |
5537 | add_target (&remote_async_ops); | |
5538 | ||
5539 | init_extended_async_remote_ops (); | |
5540 | add_target (&extended_async_remote_ops); | |
5541 | ||
0f71a2f6 JM |
5542 | init_remote_cisco_ops (); |
5543 | add_target (&remote_cisco_ops); | |
5544 | ||
c906108c SS |
5545 | #if 0 |
5546 | init_remote_threadtests (); | |
5547 | #endif | |
5548 | ||
d471ea57 AC |
5549 | /* set/show remote ... */ |
5550 | ||
5a2468f5 JM |
5551 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5552 | Remote protocol specific variables\n\ | |
5553 | Configure various remote-protocol specific variables such as\n\ | |
5554 | the packets being used", | |
cff3e48b | 5555 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5556 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5557 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5558 | Remote protocol specific variables\n\ |
5559 | Configure various remote-protocol specific variables such as\n\ | |
5560 | the packets being used", | |
cff3e48b | 5561 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5562 | 0/*allow-unknown*/, &showlist); |
5563 | ||
c5aa993b | 5564 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5565 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5566 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5567 | &cmdlist); |
5568 | ||
5569 | add_cmd ("packet", class_maintenance, packet_command, | |
5570 | "Send an arbitrary packet to a remote target.\n\ | |
5571 | maintenance packet TEXT\n\ | |
5572 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5573 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5574 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5575 | terminating `#' character and checksum.", | |
5576 | &maintenancelist); | |
5577 | ||
c5aa993b | 5578 | add_show_from_set |
c906108c | 5579 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5580 | var_boolean, (char *) &remote_break, |
c906108c SS |
5581 | "Set whether to send break if interrupted.\n", |
5582 | &setlist), | |
5583 | &showlist); | |
5584 | ||
11cf8741 JM |
5585 | /* Install commands for configuring memory read/write packets. */ |
5586 | ||
5587 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5588 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5589 | &setlist); | |
4ad5b0f7 | 5590 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5591 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5592 | &showlist); | |
5593 | add_cmd ("memory-write-packet-size", no_class, | |
5594 | set_memory_write_packet_size, | |
5595 | "Set the maximum number of bytes per memory-write packet.\n" | |
5596 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5597 | "default packet size. The actual limit is further reduced\n" | |
5598 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5599 | "further restriction and ``limit'' to enable that restriction\n", | |
5600 | &remote_set_cmdlist); | |
5601 | add_cmd ("memory-read-packet-size", no_class, | |
5602 | set_memory_read_packet_size, | |
5603 | "Set the maximum number of bytes per memory-read packet.\n" | |
5604 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5605 | "default packet size. The actual limit is further reduced\n" | |
5606 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5607 | "further restriction and ``limit'' to enable that restriction\n", | |
5608 | &remote_set_cmdlist); | |
5609 | add_cmd ("memory-write-packet-size", no_class, | |
5610 | show_memory_write_packet_size, | |
5611 | "Show the maximum number of bytes per memory-write packet.\n", | |
5612 | &remote_show_cmdlist); | |
5613 | add_cmd ("memory-read-packet-size", no_class, | |
5614 | show_memory_read_packet_size, | |
5615 | "Show the maximum number of bytes per memory-read packet.\n", | |
5616 | &remote_show_cmdlist); | |
c906108c | 5617 | |
c5aa993b | 5618 | add_show_from_set |
c906108c | 5619 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5620 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5621 | "Set the maximum size of the address (in bits) \ |
5622 | in a memory packet.\n", | |
5623 | &setlist), | |
c5aa993b | 5624 | &showlist); |
c906108c | 5625 | |
96baa820 JM |
5626 | add_packet_config_cmd (&remote_protocol_binary_download, |
5627 | "X", "binary-download", | |
5628 | set_remote_protocol_binary_download_cmd, | |
5629 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5630 | &remote_set_cmdlist, &remote_show_cmdlist, |
5631 | 1); | |
96baa820 JM |
5632 | #if 0 |
5633 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5634 | compatibility. */ | |
c5aa993b | 5635 | add_show_from_set |
b83266a0 SS |
5636 | (add_set_cmd ("remotebinarydownload", no_class, |
5637 | var_boolean, (char *) &remote_binary_download, | |
5638 | "Set binary downloads.\n", &setlist), | |
5639 | &showlist); | |
96baa820 | 5640 | #endif |
0f71a2f6 JM |
5641 | |
5642 | add_info ("remote-process", remote_info_process, | |
5643 | "Query the remote system for process info."); | |
5644 | ||
d471ea57 AC |
5645 | add_packet_config_cmd (&remote_protocol_P, |
5646 | "P", "set-register", | |
5a2468f5 JM |
5647 | set_remote_protocol_P_packet_cmd, |
5648 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5649 | &remote_set_cmdlist, &remote_show_cmdlist, |
5650 | 1); | |
5651 | ||
5652 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5653 | "Z0", "software-breakpoint", | |
5654 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5655 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5656 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5657 | 0); | |
5658 | ||
5659 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5660 | "Z1", "hardware-breakpoint", | |
5661 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5662 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5663 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5664 | 0); | |
5665 | ||
5666 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5667 | "Z2", "write-watchpoint", | |
5668 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5669 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5670 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5671 | 0); | |
5672 | ||
5673 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5674 | "Z3", "read-watchpoint", | |
5675 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5676 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5677 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5678 | 0); | |
5679 | ||
5680 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5681 | "Z4", "access-watchpoint", | |
5682 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5683 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5684 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5685 | 0); | |
5686 | ||
5687 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
5688 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
5689 | &remote_Z_packet_detect, | |
5690 | "\ | |
5691 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
5692 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
5693 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
5694 | "Show use of remote protocol `Z' packets ", | |
5695 | &remote_show_cmdlist); | |
c906108c | 5696 | } |