Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
b6ba6518 KB |
2 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3 | 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c5aa993b | 21 | |
96baa820 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
28 | #include "frame.h" | |
29 | #include "inferior.h" | |
30 | #include "bfd.h" | |
31 | #include "symfile.h" | |
32 | #include "target.h" | |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
c906108c | 40 | |
7a292a7a | 41 | #include <ctype.h> |
9846de1b | 42 | #include <sys/time.h> |
c906108c SS |
43 | #ifdef USG |
44 | #include <sys/types.h> | |
45 | #endif | |
46 | ||
43ff13b4 | 47 | #include "event-loop.h" |
c2c6d25f | 48 | #include "event-top.h" |
2acceee2 | 49 | #include "inf-loop.h" |
43ff13b4 | 50 | |
c906108c SS |
51 | #include <signal.h> |
52 | #include "serial.h" | |
53 | ||
54 | /* Prototypes for local functions */ | |
6426a772 JM |
55 | static void cleanup_sigint_signal_handler (void *dummy); |
56 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 57 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 58 | |
a14ed312 KB |
59 | static void handle_remote_sigint (int); |
60 | static void handle_remote_sigint_twice (int); | |
61 | static void async_remote_interrupt (gdb_client_data); | |
62 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 63 | |
a14ed312 | 64 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 65 | |
917317f4 | 66 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 67 | |
a14ed312 | 68 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 69 | |
a14ed312 | 70 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 71 | |
a14ed312 KB |
72 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
73 | int len, int should_write, | |
29e57380 | 74 | struct mem_attrib *attrib, |
a14ed312 | 75 | struct target_ops *target); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
a14ed312 KB |
81 | static void remote_resume (int pid, int step, enum target_signal siggnal); |
82 | static void remote_async_resume (int pid, int step, | |
83 | enum target_signal siggnal); | |
84 | static int remote_start_remote (PTR); | |
c906108c | 85 | |
a14ed312 KB |
86 | static void remote_open (char *name, int from_tty); |
87 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 88 | |
a14ed312 KB |
89 | static void extended_remote_open (char *name, int from_tty); |
90 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 91 | |
a14ed312 KB |
92 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
93 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
94 | int extended_p); | |
c906108c | 95 | |
a14ed312 | 96 | static void remote_close (int quitting); |
c906108c | 97 | |
a14ed312 | 98 | static void remote_store_registers (int regno); |
c906108c | 99 | |
a14ed312 KB |
100 | static void remote_mourn (void); |
101 | static void remote_async_mourn (void); | |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_restart (void); |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_mourn (void); |
c906108c | 106 | |
a14ed312 KB |
107 | static void extended_remote_create_inferior (char *, char *, char **); |
108 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 109 | |
a14ed312 | 110 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 111 | |
c2d11a7d | 112 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 113 | |
a14ed312 | 114 | static int readchar (int timeout); |
c906108c | 115 | |
a14ed312 KB |
116 | static int remote_wait (int pid, struct target_waitstatus *status); |
117 | static int remote_async_wait (int pid, struct target_waitstatus *status); | |
c906108c | 118 | |
a14ed312 KB |
119 | static void remote_kill (void); |
120 | static void remote_async_kill (void); | |
c906108c | 121 | |
a14ed312 | 122 | static int tohex (int nib); |
c906108c | 123 | |
a14ed312 KB |
124 | static void remote_detach (char *args, int from_tty); |
125 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 126 | |
a14ed312 | 127 | static void remote_interrupt (int signo); |
c906108c | 128 | |
a14ed312 | 129 | static void remote_interrupt_twice (int signo); |
7a292a7a | 130 | |
a14ed312 | 131 | static void interrupt_query (void); |
c906108c | 132 | |
a14ed312 | 133 | static void set_thread (int, int); |
c906108c | 134 | |
a14ed312 | 135 | static int remote_thread_alive (int); |
c906108c | 136 | |
a14ed312 | 137 | static void get_offsets (void); |
c906108c | 138 | |
c2d11a7d | 139 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 140 | |
a14ed312 | 141 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 142 | |
a14ed312 | 143 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 144 | |
a14ed312 | 145 | static int hexnumlen (ULONGEST num); |
c906108c | 146 | |
a14ed312 | 147 | static void init_remote_ops (void); |
c906108c | 148 | |
a14ed312 | 149 | static void init_extended_remote_ops (void); |
c906108c | 150 | |
a14ed312 | 151 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
152 | |
153 | static struct target_ops remote_cisco_ops; | |
154 | ||
a14ed312 | 155 | static void remote_stop (void); |
c906108c | 156 | |
a14ed312 | 157 | static int ishex (int ch, int *val); |
c906108c | 158 | |
a14ed312 | 159 | static int stubhex (int ch); |
c906108c | 160 | |
a14ed312 | 161 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumstr (char *, ULONGEST); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 166 | |
a14ed312 | 167 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 168 | |
a14ed312 | 169 | static void print_packet (char *); |
c906108c | 170 | |
a14ed312 | 171 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 172 | |
a14ed312 | 173 | static void compare_sections_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void packet_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 178 | |
a14ed312 | 179 | static int remote_current_thread (int oldpid); |
c906108c | 180 | |
a14ed312 | 181 | static void remote_find_new_threads (void); |
c906108c | 182 | |
a14ed312 | 183 | static void record_currthread (int currthread); |
c906108c | 184 | |
c906108c SS |
185 | /* exported functions */ |
186 | ||
a14ed312 | 187 | extern int fromhex (int a); |
c906108c | 188 | |
a14ed312 | 189 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 190 | |
a14ed312 | 191 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 192 | |
5a2468f5 | 193 | struct packet_config; |
5a2468f5 | 194 | |
a14ed312 | 195 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 196 | |
d471ea57 | 197 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 198 | |
c906108c SS |
199 | /* Define the target subroutine names */ |
200 | ||
a14ed312 | 201 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 202 | |
a14ed312 | 203 | void _initialize_remote (void); |
c906108c SS |
204 | |
205 | /* */ | |
206 | ||
207 | static struct target_ops remote_ops; | |
208 | ||
209 | static struct target_ops extended_remote_ops; | |
210 | ||
43ff13b4 JM |
211 | /* Temporary target ops. Just like the remote_ops and |
212 | extended_remote_ops, but with asynchronous support. */ | |
213 | static struct target_ops remote_async_ops; | |
214 | ||
215 | static struct target_ops extended_async_remote_ops; | |
216 | ||
6426a772 JM |
217 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
218 | ``forever'' still use the normal timeout mechanism. This is | |
219 | currently used by the ASYNC code to guarentee that target reads | |
220 | during the initial connect always time-out. Once getpkt has been | |
221 | modified to return a timeout indication and, in turn | |
222 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
223 | this can go away. */ | |
224 | static int wait_forever_enabled_p = 1; | |
225 | ||
226 | ||
c906108c SS |
227 | /* This variable chooses whether to send a ^C or a break when the user |
228 | requests program interruption. Although ^C is usually what remote | |
229 | systems expect, and that is the default here, sometimes a break is | |
230 | preferable instead. */ | |
231 | ||
232 | static int remote_break; | |
233 | ||
c906108c SS |
234 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
235 | remote_open knows that we don't have a file open when the program | |
236 | starts. */ | |
237 | static serial_t remote_desc = NULL; | |
238 | ||
0f71a2f6 JM |
239 | /* This is set by the target (thru the 'S' message) |
240 | to denote that the target is in kernel mode. */ | |
241 | static int cisco_kernel_mode = 0; | |
242 | ||
c906108c SS |
243 | /* This variable sets the number of bits in an address that are to be |
244 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
245 | leading zeros, the entire address would be sent. This variable | |
246 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
247 | initial implementation of remote.c restricted the address sent in | |
248 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
249 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
250 | address was never sent. Since fixing this bug may cause a break in | |
251 | some remote targets this variable is principly provided to | |
252 | facilitate backward compatibility. */ | |
253 | ||
254 | static int remote_address_size; | |
255 | ||
6426a772 JM |
256 | /* Tempoary to track who currently owns the terminal. See |
257 | target_async_terminal_* for more details. */ | |
258 | ||
259 | static int remote_async_terminal_ours_p; | |
260 | ||
11cf8741 JM |
261 | \f |
262 | /* This is the size (in chars) of the first response to the ``g'' | |
263 | packet. It is used as a heuristic when determining the maximum | |
264 | size of memory-read and memory-write packets. A target will | |
265 | typically only reserve a buffer large enough to hold the ``g'' | |
266 | packet. The size does not include packet overhead (headers and | |
267 | trailers). */ | |
268 | ||
269 | static long actual_register_packet_size; | |
270 | ||
271 | /* This is the maximum size (in chars) of a non read/write packet. It | |
272 | is also used as a cap on the size of read/write packets. */ | |
273 | ||
274 | static long remote_packet_size; | |
275 | /* compatibility. */ | |
276 | #define PBUFSIZ (remote_packet_size) | |
277 | ||
278 | /* User configurable variables for the number of characters in a | |
279 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
280 | default. Some targets need smaller values (fifo overruns, et.al.) | |
281 | and some users need larger values (speed up transfers). The | |
282 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
283 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
284 | negative - a hard limit). */ | |
285 | ||
286 | struct memory_packet_config | |
287 | { | |
288 | char *name; | |
289 | long size; | |
290 | int fixed_p; | |
291 | }; | |
292 | ||
293 | /* Compute the current size of a read/write packet. Since this makes | |
294 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
295 | ||
296 | static long | |
297 | get_memory_packet_size (struct memory_packet_config *config) | |
298 | { | |
299 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
300 | law?) that some hosts don't cope very well with large alloca() | |
301 | calls. Eventually the alloca() code will be replaced by calls to | |
302 | xmalloc() and make_cleanups() allowing this restriction to either | |
303 | be lifted or removed. */ | |
304 | #ifndef MAX_REMOTE_PACKET_SIZE | |
305 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
306 | #endif | |
307 | /* NOTE: 16 is just chosen at random. */ | |
308 | #ifndef MIN_REMOTE_PACKET_SIZE | |
309 | #define MIN_REMOTE_PACKET_SIZE 16 | |
310 | #endif | |
311 | long what_they_get; | |
312 | if (config->fixed_p) | |
313 | { | |
314 | if (config->size <= 0) | |
315 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
316 | else | |
317 | what_they_get = config->size; | |
318 | } | |
319 | else | |
320 | { | |
321 | what_they_get = remote_packet_size; | |
322 | /* Limit the packet to the size specified by the user. */ | |
323 | if (config->size > 0 | |
324 | && what_they_get > config->size) | |
325 | what_they_get = config->size; | |
326 | /* Limit it to the size of the targets ``g'' response. */ | |
327 | if (actual_register_packet_size > 0 | |
328 | && what_they_get > actual_register_packet_size) | |
329 | what_they_get = actual_register_packet_size; | |
330 | } | |
331 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
332 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
333 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
334 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
335 | return what_they_get; | |
336 | } | |
337 | ||
338 | /* Update the size of a read/write packet. If they user wants | |
339 | something really big then do a sanity check. */ | |
340 | ||
341 | static void | |
342 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
343 | { | |
344 | int fixed_p = config->fixed_p; | |
345 | long size = config->size; | |
346 | if (args == NULL) | |
347 | error ("Argument required (integer, `fixed' or `limited')."); | |
348 | else if (strcmp (args, "hard") == 0 | |
349 | || strcmp (args, "fixed") == 0) | |
350 | fixed_p = 1; | |
351 | else if (strcmp (args, "soft") == 0 | |
352 | || strcmp (args, "limit") == 0) | |
353 | fixed_p = 0; | |
354 | else | |
355 | { | |
356 | char *end; | |
357 | size = strtoul (args, &end, 0); | |
358 | if (args == end) | |
359 | error ("Invalid %s (bad syntax).", config->name); | |
360 | #if 0 | |
361 | /* Instead of explicitly capping the size of a packet to | |
362 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
363 | instead allowed to set the size to something arbitrarily | |
364 | large. */ | |
365 | if (size > MAX_REMOTE_PACKET_SIZE) | |
366 | error ("Invalid %s (too large).", config->name); | |
367 | #endif | |
368 | } | |
369 | /* Extra checks? */ | |
370 | if (fixed_p && !config->fixed_p) | |
371 | { | |
372 | if (! query ("The target may not be able to correctly handle a %s\n" | |
373 | "of %ld bytes. Change the packet size? ", | |
374 | config->name, size)) | |
375 | error ("Packet size not changed."); | |
376 | } | |
377 | /* Update the config. */ | |
378 | config->fixed_p = fixed_p; | |
379 | config->size = size; | |
380 | } | |
381 | ||
382 | static void | |
383 | show_memory_packet_size (struct memory_packet_config *config) | |
384 | { | |
385 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
386 | if (config->fixed_p) | |
387 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
388 | get_memory_packet_size (config)); | |
389 | else | |
390 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
391 | get_memory_packet_size (config)); | |
392 | } | |
393 | ||
394 | static struct memory_packet_config memory_write_packet_config = | |
395 | { | |
396 | "memory-write-packet-size", | |
397 | }; | |
398 | ||
399 | static void | |
400 | set_memory_write_packet_size (char *args, int from_tty) | |
401 | { | |
402 | set_memory_packet_size (args, &memory_write_packet_config); | |
403 | } | |
404 | ||
405 | static void | |
406 | show_memory_write_packet_size (char *args, int from_tty) | |
407 | { | |
408 | show_memory_packet_size (&memory_write_packet_config); | |
409 | } | |
410 | ||
411 | static long | |
412 | get_memory_write_packet_size (void) | |
413 | { | |
414 | return get_memory_packet_size (&memory_write_packet_config); | |
415 | } | |
416 | ||
417 | static struct memory_packet_config memory_read_packet_config = | |
418 | { | |
419 | "memory-read-packet-size", | |
420 | }; | |
421 | ||
422 | static void | |
423 | set_memory_read_packet_size (char *args, int from_tty) | |
424 | { | |
425 | set_memory_packet_size (args, &memory_read_packet_config); | |
426 | } | |
427 | ||
428 | static void | |
429 | show_memory_read_packet_size (char *args, int from_tty) | |
430 | { | |
431 | show_memory_packet_size (&memory_read_packet_config); | |
432 | } | |
433 | ||
434 | static long | |
435 | get_memory_read_packet_size (void) | |
436 | { | |
437 | long size = get_memory_packet_size (&memory_read_packet_config); | |
438 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
439 | extra buffer size argument before the memory read size can be | |
440 | increased beyond PBUFSIZ. */ | |
441 | if (size > PBUFSIZ) | |
442 | size = PBUFSIZ; | |
443 | return size; | |
444 | } | |
445 | ||
446 | /* Register packet size initialization. Since the bounds change when | |
447 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
448 | be multi-arched. */ | |
449 | ||
450 | static void | |
451 | register_remote_packet_sizes (void) | |
452 | { | |
453 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
454 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
455 | } | |
456 | ||
457 | static void | |
458 | build_remote_packet_sizes (void) | |
459 | { | |
c2d11a7d JM |
460 | /* Default maximum number of characters in a packet body. Many |
461 | remote stubs have a hardwired buffer size of 400 bytes | |
462 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
463 | as the maximum packet-size to ensure that the packet and an extra | |
464 | NUL character can always fit in the buffer. This stops GDB | |
465 | trashing stubs that try to squeeze an extra NUL into what is | |
466 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
467 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
468 | /* Should REGISTER_BYTES needs more space than the default, adjust |
469 | the size accordingly. Remember that each byte is encoded as two | |
470 | characters. 32 is the overhead for the packet header / | |
471 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
472 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
473 | little. */ | |
474 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
475 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
476 | ||
477 | /* This one is filled in when a ``g'' packet is received. */ | |
478 | actual_register_packet_size = 0; | |
479 | } | |
480 | \f | |
5a2468f5 JM |
481 | /* Generic configuration support for packets the stub optionally |
482 | supports. Allows the user to specify the use of the packet as well | |
483 | as allowing GDB to auto-detect support in the remote stub. */ | |
484 | ||
485 | enum packet_support | |
486 | { | |
487 | PACKET_SUPPORT_UNKNOWN = 0, | |
488 | PACKET_ENABLE, | |
489 | PACKET_DISABLE | |
490 | }; | |
491 | ||
5a2468f5 JM |
492 | struct packet_config |
493 | { | |
5a2468f5 JM |
494 | char *name; |
495 | char *title; | |
8e248173 | 496 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
497 | enum packet_support support; |
498 | }; | |
499 | ||
d471ea57 AC |
500 | /* Analyze a packet's return value and update the packet config |
501 | accordingly. */ | |
502 | ||
503 | enum packet_result | |
504 | { | |
505 | PACKET_ERROR, | |
506 | PACKET_OK, | |
507 | PACKET_UNKNOWN | |
508 | }; | |
509 | ||
5a2468f5 | 510 | static void |
d471ea57 | 511 | update_packet_config (struct packet_config *config) |
5a2468f5 | 512 | { |
d471ea57 AC |
513 | switch (config->detect) |
514 | { | |
515 | case CMD_AUTO_BOOLEAN_TRUE: | |
516 | config->support = PACKET_ENABLE; | |
517 | break; | |
518 | case CMD_AUTO_BOOLEAN_FALSE: | |
519 | config->support = PACKET_DISABLE; | |
520 | break; | |
521 | case CMD_AUTO_BOOLEAN_AUTO: | |
522 | config->support = PACKET_SUPPORT_UNKNOWN; | |
523 | break; | |
524 | } | |
5a2468f5 JM |
525 | } |
526 | ||
527 | static void | |
fba45db2 | 528 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
529 | { |
530 | char *support = "internal-error"; | |
531 | switch (config->support) | |
532 | { | |
533 | case PACKET_ENABLE: | |
534 | support = "enabled"; | |
535 | break; | |
536 | case PACKET_DISABLE: | |
537 | support = "disabled"; | |
538 | break; | |
539 | case PACKET_SUPPORT_UNKNOWN: | |
540 | support = "unknown"; | |
541 | break; | |
542 | } | |
543 | switch (config->detect) | |
544 | { | |
8e248173 | 545 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
546 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
547 | config->name, config->title, support); | |
548 | break; | |
8e248173 AC |
549 | case CMD_AUTO_BOOLEAN_TRUE: |
550 | case CMD_AUTO_BOOLEAN_FALSE: | |
551 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 552 | config->name, config->title, support); |
8e248173 | 553 | break; |
5a2468f5 JM |
554 | } |
555 | } | |
556 | ||
557 | static void | |
d471ea57 AC |
558 | add_packet_config_cmd (struct packet_config *config, |
559 | char *name, | |
560 | char *title, | |
561 | void (*set_func) (char *args, int from_tty, | |
562 | struct cmd_list_element * | |
563 | c), | |
564 | void (*show_func) (char *name, | |
565 | int from_tty), | |
566 | struct cmd_list_element **set_remote_list, | |
567 | struct cmd_list_element **show_remote_list, | |
568 | int legacy) | |
569 | { | |
570 | struct cmd_list_element *set_cmd; | |
571 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
572 | char *set_doc; |
573 | char *show_doc; | |
d471ea57 | 574 | char *cmd_name; |
5a2468f5 JM |
575 | config->name = name; |
576 | config->title = title; | |
8e248173 AC |
577 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
578 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
579 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
580 | name, title); | |
581 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
582 | name, title); | |
d471ea57 | 583 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 584 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
585 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
586 | &config->detect, set_doc, | |
587 | set_remote_list); | |
588 | set_cmd->function.sfunc = set_func; | |
589 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
590 | show_remote_list); | |
591 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
592 | if (legacy) | |
593 | { | |
594 | char *legacy_name; | |
76995688 | 595 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
596 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
597 | set_remote_list); | |
598 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
599 | show_remote_list); | |
600 | } | |
5a2468f5 JM |
601 | } |
602 | ||
d471ea57 AC |
603 | static enum packet_result |
604 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 605 | { |
d471ea57 | 606 | if (buf[0] != '\0') |
5a2468f5 | 607 | { |
d471ea57 AC |
608 | /* The stub recognized the packet request. Check that the |
609 | operation succeeded. */ | |
610 | switch (config->support) | |
611 | { | |
612 | case PACKET_SUPPORT_UNKNOWN: | |
613 | if (remote_debug) | |
614 | fprintf_unfiltered (gdb_stdlog, | |
615 | "Packet %s (%s) is supported\n", | |
616 | config->name, config->title); | |
617 | config->support = PACKET_ENABLE; | |
618 | break; | |
619 | case PACKET_DISABLE: | |
8e65ff28 AC |
620 | internal_error (__FILE__, __LINE__, |
621 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
622 | break; |
623 | case PACKET_ENABLE: | |
624 | break; | |
625 | } | |
626 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
627 | /* "OK" - definitly OK. */ | |
628 | return PACKET_OK; | |
629 | if (buf[0] == 'E' | |
630 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
631 | && buf[3] == '\0') | |
632 | /* "Enn" - definitly an error. */ | |
633 | return PACKET_ERROR; | |
634 | /* The packet may or may not be OK. Just assume it is */ | |
635 | return PACKET_OK; | |
636 | } | |
637 | else | |
638 | { | |
639 | /* The stub does not support the packet. */ | |
640 | switch (config->support) | |
641 | { | |
642 | case PACKET_ENABLE: | |
643 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
644 | /* If the stub previously indicated that the packet was | |
645 | supported then there is a protocol error.. */ | |
646 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
647 | config->name, config->title); | |
648 | else | |
649 | /* The user set it wrong. */ | |
650 | error ("Enabled packet %s (%s) not recognized by stub", | |
651 | config->name, config->title); | |
652 | break; | |
653 | case PACKET_SUPPORT_UNKNOWN: | |
654 | if (remote_debug) | |
655 | fprintf_unfiltered (gdb_stdlog, | |
656 | "Packet %s (%s) is NOT supported\n", | |
657 | config->name, config->title); | |
658 | config->support = PACKET_DISABLE; | |
659 | break; | |
660 | case PACKET_DISABLE: | |
661 | break; | |
662 | } | |
663 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
664 | } |
665 | } | |
666 | ||
667 | /* Should we try the 'P' (set register) request? */ | |
668 | ||
669 | static struct packet_config remote_protocol_P; | |
670 | ||
671 | static void | |
fba45db2 KB |
672 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
673 | struct cmd_list_element *c) | |
5a2468f5 | 674 | { |
d471ea57 | 675 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
676 | } |
677 | ||
678 | static void | |
fba45db2 | 679 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
680 | { |
681 | show_packet_config_cmd (&remote_protocol_P); | |
682 | } | |
683 | ||
d471ea57 AC |
684 | /* Should we try one of the 'Z' requests? */ |
685 | ||
686 | enum Z_packet_type | |
687 | { | |
688 | Z_PACKET_SOFTWARE_BP, | |
689 | Z_PACKET_HARDWARE_BP, | |
690 | Z_PACKET_WRITE_WP, | |
691 | Z_PACKET_READ_WP, | |
692 | Z_PACKET_ACCESS_WP, | |
693 | NR_Z_PACKET_TYPES | |
694 | }; | |
96baa820 | 695 | |
d471ea57 AC |
696 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
697 | ||
698 | /* FIXME: Instead of having all these boiler plate functions, the | |
699 | command callback should include a context argument. */ | |
700 | ||
701 | static void | |
702 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
703 | struct cmd_list_element *c) | |
704 | { | |
705 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
706 | } | |
707 | ||
708 | static void | |
709 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
710 | { | |
711 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
712 | } | |
713 | ||
714 | static void | |
715 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
716 | struct cmd_list_element *c) | |
717 | { | |
718 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
719 | } | |
720 | ||
721 | static void | |
722 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
723 | { | |
724 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
725 | } | |
726 | ||
727 | static void | |
728 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
729 | struct cmd_list_element *c) | |
730 | { | |
731 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
732 | } | |
733 | ||
734 | static void | |
735 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
736 | { | |
737 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
738 | } | |
739 | ||
740 | static void | |
741 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
742 | struct cmd_list_element *c) | |
743 | { | |
744 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
745 | } | |
746 | ||
747 | static void | |
748 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
749 | { | |
750 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
751 | } | |
752 | ||
753 | static void | |
754 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
755 | struct cmd_list_element *c) | |
756 | { | |
757 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
758 | } | |
759 | ||
760 | static void | |
761 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
762 | { | |
763 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
764 | } | |
765 | ||
766 | /* For compatibility with older distributions. Provide a ``set remote | |
767 | Z-packet ...'' command that updates all the Z packet types. */ | |
768 | ||
769 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
770 | |
771 | static void | |
fba45db2 KB |
772 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
773 | struct cmd_list_element *c) | |
96baa820 | 774 | { |
d471ea57 AC |
775 | int i; |
776 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
777 | { | |
778 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
779 | update_packet_config (&remote_protocol_Z[i]); | |
780 | } | |
96baa820 JM |
781 | } |
782 | ||
783 | static void | |
fba45db2 | 784 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 785 | { |
d471ea57 AC |
786 | int i; |
787 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
788 | { | |
789 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
790 | } | |
96baa820 JM |
791 | } |
792 | ||
793 | /* Should we try the 'X' (remote binary download) packet? | |
794 | ||
795 | This variable (available to the user via "set remote X-packet") | |
796 | dictates whether downloads are sent in binary (via the 'X' packet). | |
797 | We assume that the stub can, and attempt to do it. This will be | |
798 | cleared if the stub does not understand it. This switch is still | |
799 | needed, though in cases when the packet is supported in the stub, | |
800 | but the connection does not allow it (i.e., 7-bit serial connection | |
801 | only). */ | |
802 | ||
803 | static struct packet_config remote_protocol_binary_download; | |
804 | ||
9d1f7ab2 MS |
805 | /* Should we try the 'ThreadInfo' query packet? |
806 | ||
807 | This variable (NOT available to the user: auto-detect only!) | |
808 | determines whether GDB will use the new, simpler "ThreadInfo" | |
809 | query or the older, more complex syntax for thread queries. | |
810 | This is an auto-detect variable (set to true at each connect, | |
811 | and set to false when the target fails to recognize it). */ | |
812 | ||
813 | static int use_threadinfo_query; | |
814 | static int use_threadextra_query; | |
815 | ||
96baa820 JM |
816 | static void |
817 | set_remote_protocol_binary_download_cmd (char *args, | |
818 | int from_tty, | |
819 | struct cmd_list_element *c) | |
820 | { | |
d471ea57 | 821 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
822 | } |
823 | ||
824 | static void | |
825 | show_remote_protocol_binary_download_cmd (char *args, | |
826 | int from_tty) | |
827 | { | |
828 | show_packet_config_cmd (&remote_protocol_binary_download); | |
829 | } | |
830 | ||
c906108c | 831 | |
43ff13b4 JM |
832 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
833 | PTR sigint_remote_twice_token; | |
834 | PTR sigint_remote_token; | |
835 | ||
c906108c SS |
836 | /* These are pointers to hook functions that may be set in order to |
837 | modify resume/wait behavior for a particular architecture. */ | |
838 | ||
507f3c78 KB |
839 | void (*target_resume_hook) (void); |
840 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
841 | \f |
842 | ||
c5aa993b | 843 | |
c906108c SS |
844 | /* These are the threads which we last sent to the remote system. |
845 | -1 for all or -2 for not sent yet. */ | |
846 | static int general_thread; | |
cce74817 | 847 | static int continue_thread; |
c906108c SS |
848 | |
849 | /* Call this function as a result of | |
850 | 1) A halt indication (T packet) containing a thread id | |
851 | 2) A direct query of currthread | |
852 | 3) Successful execution of set thread | |
853 | */ | |
854 | ||
855 | static void | |
fba45db2 | 856 | record_currthread (int currthread) |
c906108c | 857 | { |
c906108c | 858 | general_thread = currthread; |
cce74817 | 859 | |
c906108c SS |
860 | /* If this is a new thread, add it to GDB's thread list. |
861 | If we leave it up to WFI to do this, bad things will happen. */ | |
862 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
863 | { |
864 | add_thread (currthread); | |
8b93c638 JM |
865 | #ifdef UI_OUT |
866 | ui_out_text (uiout, "[New "); | |
867 | ui_out_text (uiout, target_pid_to_str (currthread)); | |
868 | ui_out_text (uiout, "]\n"); | |
869 | #else | |
0f71a2f6 | 870 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); |
8b93c638 | 871 | #endif |
0f71a2f6 | 872 | } |
c906108c SS |
873 | } |
874 | ||
875 | #define MAGIC_NULL_PID 42000 | |
876 | ||
877 | static void | |
fba45db2 | 878 | set_thread (int th, int gen) |
c906108c | 879 | { |
085dd6e6 | 880 | char *buf = alloca (PBUFSIZ); |
cce74817 | 881 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
882 | |
883 | if (state == th) | |
884 | return; | |
885 | ||
886 | buf[0] = 'H'; | |
887 | buf[1] = gen ? 'g' : 'c'; | |
888 | if (th == MAGIC_NULL_PID) | |
889 | { | |
890 | buf[2] = '0'; | |
891 | buf[3] = '\0'; | |
892 | } | |
893 | else if (th < 0) | |
894 | sprintf (&buf[2], "-%x", -th); | |
895 | else | |
896 | sprintf (&buf[2], "%x", th); | |
897 | putpkt (buf); | |
c2d11a7d | 898 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 899 | if (gen) |
c5aa993b | 900 | general_thread = th; |
c906108c | 901 | else |
cce74817 | 902 | continue_thread = th; |
c906108c SS |
903 | } |
904 | \f | |
905 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
906 | ||
907 | static int | |
fba45db2 | 908 | remote_thread_alive (int tid) |
c906108c | 909 | { |
cce74817 | 910 | char buf[16]; |
c906108c | 911 | |
cce74817 JM |
912 | if (tid < 0) |
913 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 914 | else |
cce74817 | 915 | sprintf (buf, "T%08x", tid); |
c906108c | 916 | putpkt (buf); |
c2d11a7d | 917 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
918 | return (buf[0] == 'O' && buf[1] == 'K'); |
919 | } | |
920 | ||
921 | /* About these extended threadlist and threadinfo packets. They are | |
922 | variable length packets but, the fields within them are often fixed | |
923 | length. They are redundent enough to send over UDP as is the | |
924 | remote protocol in general. There is a matching unit test module | |
925 | in libstub. */ | |
926 | ||
cce74817 JM |
927 | #define OPAQUETHREADBYTES 8 |
928 | ||
929 | /* a 64 bit opaque identifier */ | |
930 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
931 | ||
932 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
933 | protocol encoding, and remote.c. it is not particularly changable */ | |
934 | ||
935 | /* Right now, the internal structure is int. We want it to be bigger. | |
936 | Plan to fix this. | |
c5aa993b | 937 | */ |
cce74817 | 938 | |
c5aa993b | 939 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 940 | |
9d1f7ab2 | 941 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
942 | equivalint to the reply of the remote threadinfo packet */ |
943 | ||
944 | struct gdb_ext_thread_info | |
c5aa993b JM |
945 | { |
946 | threadref threadid; /* External form of thread reference */ | |
947 | int active; /* Has state interesting to GDB? , regs, stack */ | |
948 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
949 | char shortname[32]; /* To be used to name threads */ | |
950 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
951 | }; | |
cce74817 JM |
952 | |
953 | /* The volume of remote transfers can be limited by submitting | |
954 | a mask containing bits specifying the desired information. | |
955 | Use a union of these values as the 'selection' parameter to | |
956 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 957 | */ |
cce74817 JM |
958 | |
959 | #define TAG_THREADID 1 | |
960 | #define TAG_EXISTS 2 | |
961 | #define TAG_DISPLAY 4 | |
962 | #define TAG_THREADNAME 8 | |
c5aa993b | 963 | #define TAG_MOREDISPLAY 16 |
cce74817 | 964 | |
c906108c SS |
965 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
966 | ||
a14ed312 | 967 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 968 | |
a14ed312 | 969 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 970 | |
a14ed312 | 971 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 972 | |
a14ed312 | 973 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 974 | |
a14ed312 | 975 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 976 | |
a14ed312 | 977 | static char *pack_int (char *buf, int value); |
cce74817 | 978 | |
a14ed312 | 979 | static char *unpack_int (char *buf, int *value); |
cce74817 | 980 | |
a14ed312 | 981 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 982 | |
a14ed312 | 983 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 984 | |
a14ed312 | 985 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 986 | |
a14ed312 | 987 | void int_to_threadref (threadref * id, int value); |
cce74817 | 988 | |
a14ed312 | 989 | static int threadref_to_int (threadref * ref); |
cce74817 | 990 | |
a14ed312 | 991 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 992 | |
a14ed312 | 993 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 994 | |
a14ed312 | 995 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 996 | |
a14ed312 KB |
997 | static int remote_unpack_thread_info_response (char *pkt, |
998 | threadref * expectedref, | |
999 | struct gdb_ext_thread_info | |
1000 | *info); | |
cce74817 JM |
1001 | |
1002 | ||
a14ed312 KB |
1003 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1004 | struct gdb_ext_thread_info *info); | |
cce74817 | 1005 | |
a14ed312 KB |
1006 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1007 | int selection, | |
1008 | struct gdb_ext_thread_info *info); | |
cce74817 | 1009 | |
a14ed312 KB |
1010 | static char *pack_threadlist_request (char *pkt, int startflag, |
1011 | int threadcount, | |
1012 | threadref * nextthread); | |
cce74817 | 1013 | |
a14ed312 KB |
1014 | static int parse_threadlist_response (char *pkt, |
1015 | int result_limit, | |
1016 | threadref * original_echo, | |
1017 | threadref * resultlist, int *doneflag); | |
cce74817 | 1018 | |
a14ed312 KB |
1019 | static int remote_get_threadlist (int startflag, |
1020 | threadref * nextthread, | |
1021 | int result_limit, | |
1022 | int *done, | |
1023 | int *result_count, threadref * threadlist); | |
cce74817 | 1024 | |
c5aa993b | 1025 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1026 | |
a14ed312 KB |
1027 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1028 | void *context, int looplimit); | |
cce74817 | 1029 | |
a14ed312 | 1030 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1031 | |
c906108c SS |
1032 | /* encode 64 bits in 16 chars of hex */ |
1033 | ||
1034 | static const char hexchars[] = "0123456789abcdef"; | |
1035 | ||
1036 | static int | |
fba45db2 | 1037 | ishex (int ch, int *val) |
c906108c SS |
1038 | { |
1039 | if ((ch >= 'a') && (ch <= 'f')) | |
1040 | { | |
1041 | *val = ch - 'a' + 10; | |
1042 | return 1; | |
1043 | } | |
1044 | if ((ch >= 'A') && (ch <= 'F')) | |
1045 | { | |
1046 | *val = ch - 'A' + 10; | |
1047 | return 1; | |
1048 | } | |
1049 | if ((ch >= '0') && (ch <= '9')) | |
1050 | { | |
1051 | *val = ch - '0'; | |
1052 | return 1; | |
1053 | } | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | static int | |
fba45db2 | 1058 | stubhex (int ch) |
c906108c SS |
1059 | { |
1060 | if (ch >= 'a' && ch <= 'f') | |
1061 | return ch - 'a' + 10; | |
1062 | if (ch >= '0' && ch <= '9') | |
1063 | return ch - '0'; | |
1064 | if (ch >= 'A' && ch <= 'F') | |
1065 | return ch - 'A' + 10; | |
1066 | return -1; | |
1067 | } | |
1068 | ||
1069 | static int | |
fba45db2 | 1070 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1071 | { |
1072 | int nibble; | |
1073 | int retval = 0; | |
1074 | ||
1075 | while (fieldlength) | |
1076 | { | |
1077 | nibble = stubhex (*buff++); | |
1078 | retval |= nibble; | |
1079 | fieldlength--; | |
1080 | if (fieldlength) | |
1081 | retval = retval << 4; | |
1082 | } | |
1083 | return retval; | |
1084 | } | |
1085 | ||
1086 | char * | |
fba45db2 KB |
1087 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1088 | int *result) | |
c906108c SS |
1089 | { |
1090 | int nibble; | |
1091 | int retval = 0; | |
1092 | ||
1093 | while (ishex (*buff, &nibble)) | |
1094 | { | |
1095 | buff++; | |
1096 | retval = retval << 4; | |
1097 | retval |= nibble & 0x0f; | |
1098 | } | |
1099 | *result = retval; | |
1100 | return buff; | |
1101 | } | |
1102 | ||
1103 | static char * | |
fba45db2 | 1104 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1105 | { |
1106 | ishex (*buf++, val); | |
1107 | return buf; | |
1108 | } | |
1109 | ||
1110 | static char * | |
fba45db2 | 1111 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1112 | { |
1113 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1114 | return buf; | |
1115 | } | |
1116 | ||
1117 | static char * | |
fba45db2 | 1118 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1119 | { |
1120 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1121 | *pkt++ = hexchars[(byte & 0xf)]; | |
1122 | return pkt; | |
1123 | } | |
1124 | ||
1125 | static char * | |
fba45db2 | 1126 | unpack_byte (char *buf, int *value) |
c906108c SS |
1127 | { |
1128 | *value = stub_unpack_int (buf, 2); | |
1129 | return buf + 2; | |
1130 | } | |
1131 | ||
1132 | static char * | |
fba45db2 | 1133 | pack_int (char *buf, int value) |
c906108c SS |
1134 | { |
1135 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1136 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1137 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1138 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1139 | return buf; | |
1140 | } | |
1141 | ||
1142 | static char * | |
fba45db2 | 1143 | unpack_int (char *buf, int *value) |
c906108c SS |
1144 | { |
1145 | *value = stub_unpack_int (buf, 8); | |
1146 | return buf + 8; | |
1147 | } | |
1148 | ||
c5aa993b | 1149 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1150 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1151 | |
1152 | static char * | |
fba45db2 | 1153 | pack_string (char *pkt, char *string) |
c906108c SS |
1154 | { |
1155 | char ch; | |
1156 | int len; | |
1157 | ||
1158 | len = strlen (string); | |
1159 | if (len > 200) | |
1160 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1161 | pkt = pack_hex_byte (pkt, len); | |
1162 | while (len-- > 0) | |
1163 | { | |
1164 | ch = *string++; | |
1165 | if ((ch == '\0') || (ch == '#')) | |
1166 | ch = '*'; /* Protect encapsulation */ | |
1167 | *pkt++ = ch; | |
1168 | } | |
1169 | return pkt; | |
1170 | } | |
1171 | #endif /* 0 (unused) */ | |
1172 | ||
1173 | static char * | |
fba45db2 | 1174 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1175 | { |
1176 | while (length--) | |
1177 | *dest++ = *src++; | |
1178 | *dest = '\0'; | |
1179 | return src; | |
1180 | } | |
1181 | ||
1182 | static char * | |
fba45db2 | 1183 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1184 | { |
1185 | char *limit; | |
1186 | unsigned char *altid; | |
1187 | ||
1188 | altid = (unsigned char *) id; | |
1189 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1190 | while (pkt < limit) | |
1191 | pkt = pack_hex_byte (pkt, *altid++); | |
1192 | return pkt; | |
1193 | } | |
1194 | ||
1195 | ||
1196 | static char * | |
fba45db2 | 1197 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1198 | { |
1199 | char *altref; | |
1200 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1201 | int x, y; | |
1202 | ||
1203 | altref = (char *) id; | |
1204 | ||
1205 | while (inbuf < limit) | |
1206 | { | |
1207 | x = stubhex (*inbuf++); | |
1208 | y = stubhex (*inbuf++); | |
1209 | *altref++ = (x << 4) | y; | |
1210 | } | |
1211 | return inbuf; | |
1212 | } | |
1213 | ||
1214 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1215 | ints. This is due to a mismatch of specifications. We would like | |
1216 | to use 64bit thread references internally. This is an adapter | |
1217 | function. */ | |
1218 | ||
1219 | void | |
fba45db2 | 1220 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1221 | { |
1222 | unsigned char *scan; | |
1223 | ||
1224 | scan = (unsigned char *) id; | |
1225 | { | |
1226 | int i = 4; | |
1227 | while (i--) | |
1228 | *scan++ = 0; | |
1229 | } | |
1230 | *scan++ = (value >> 24) & 0xff; | |
1231 | *scan++ = (value >> 16) & 0xff; | |
1232 | *scan++ = (value >> 8) & 0xff; | |
1233 | *scan++ = (value & 0xff); | |
1234 | } | |
1235 | ||
1236 | static int | |
fba45db2 | 1237 | threadref_to_int (threadref *ref) |
c906108c SS |
1238 | { |
1239 | int i, value = 0; | |
1240 | unsigned char *scan; | |
1241 | ||
1242 | scan = (char *) ref; | |
1243 | scan += 4; | |
1244 | i = 4; | |
1245 | while (i-- > 0) | |
1246 | value = (value << 8) | ((*scan++) & 0xff); | |
1247 | return value; | |
1248 | } | |
1249 | ||
1250 | static void | |
fba45db2 | 1251 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1252 | { |
1253 | int i; | |
1254 | unsigned char *csrc, *cdest; | |
1255 | ||
1256 | csrc = (unsigned char *) src; | |
1257 | cdest = (unsigned char *) dest; | |
1258 | i = 8; | |
1259 | while (i--) | |
1260 | *cdest++ = *csrc++; | |
1261 | } | |
1262 | ||
1263 | static int | |
fba45db2 | 1264 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1265 | { |
1266 | /* things are broken right now, so just assume we got a match */ | |
1267 | #if 0 | |
1268 | unsigned char *srcp, *destp; | |
1269 | int i, result; | |
1270 | srcp = (char *) src; | |
1271 | destp = (char *) dest; | |
1272 | ||
1273 | result = 1; | |
1274 | while (i-- > 0) | |
1275 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1276 | return result; | |
1277 | #endif | |
1278 | return 1; | |
1279 | } | |
1280 | ||
1281 | /* | |
c5aa993b JM |
1282 | threadid:1, # always request threadid |
1283 | context_exists:2, | |
1284 | display:4, | |
1285 | unique_name:8, | |
1286 | more_display:16 | |
1287 | */ | |
c906108c SS |
1288 | |
1289 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1290 | ||
1291 | static char * | |
fba45db2 | 1292 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1293 | { |
1294 | *pkt++ = 'q'; /* Info Query */ | |
1295 | *pkt++ = 'P'; /* process or thread info */ | |
1296 | pkt = pack_int (pkt, mode); /* mode */ | |
1297 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1298 | *pkt = '\0'; /* terminate */ | |
1299 | return pkt; | |
1300 | } | |
1301 | ||
1302 | /* These values tag the fields in a thread info response packet */ | |
1303 | /* Tagging the fields allows us to request specific fields and to | |
1304 | add more fields as time goes by */ | |
1305 | ||
c5aa993b JM |
1306 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1307 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1308 | fetch registers and its stack */ | |
1309 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1310 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1311 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1312 | the process */ | |
c906108c SS |
1313 | |
1314 | static int | |
fba45db2 KB |
1315 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1316 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1317 | { |
1318 | int mask, length; | |
1319 | unsigned int tag; | |
1320 | threadref ref; | |
c5aa993b | 1321 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1322 | int retval = 1; |
1323 | ||
1324 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1325 | info->active = 0; | |
1326 | info->display[0] = '\0'; | |
1327 | info->shortname[0] = '\0'; | |
1328 | info->more_display[0] = '\0'; | |
1329 | ||
1330 | /* Assume the characters indicating the packet type have been stripped */ | |
1331 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1332 | pkt = unpack_threadid (pkt, &ref); | |
1333 | ||
1334 | if (mask == 0) | |
1335 | warning ("Incomplete response to threadinfo request\n"); | |
1336 | if (!threadmatch (&ref, expectedref)) | |
1337 | { /* This is an answer to a different request */ | |
1338 | warning ("ERROR RMT Thread info mismatch\n"); | |
1339 | return 0; | |
1340 | } | |
1341 | copy_threadref (&info->threadid, &ref); | |
1342 | ||
1343 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1344 | ||
c5aa993b | 1345 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1346 | { |
1347 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1348 | pkt = unpack_byte (pkt, &length); /* length */ | |
1349 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1350 | { | |
1351 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1352 | retval = 0; | |
1353 | break; | |
1354 | } | |
1355 | if (tag == TAG_THREADID) | |
1356 | { | |
1357 | if (length != 16) | |
1358 | { | |
1359 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1360 | retval = 0; | |
1361 | break; | |
1362 | } | |
1363 | pkt = unpack_threadid (pkt, &ref); | |
1364 | mask = mask & ~TAG_THREADID; | |
1365 | continue; | |
1366 | } | |
1367 | if (tag == TAG_EXISTS) | |
1368 | { | |
1369 | info->active = stub_unpack_int (pkt, length); | |
1370 | pkt += length; | |
1371 | mask = mask & ~(TAG_EXISTS); | |
1372 | if (length > 8) | |
1373 | { | |
1374 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1375 | retval = 0; | |
1376 | break; | |
1377 | } | |
1378 | continue; | |
1379 | } | |
1380 | if (tag == TAG_THREADNAME) | |
1381 | { | |
1382 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1383 | mask = mask & ~TAG_THREADNAME; | |
1384 | continue; | |
1385 | } | |
1386 | if (tag == TAG_DISPLAY) | |
1387 | { | |
1388 | pkt = unpack_string (pkt, &info->display[0], length); | |
1389 | mask = mask & ~TAG_DISPLAY; | |
1390 | continue; | |
1391 | } | |
1392 | if (tag == TAG_MOREDISPLAY) | |
1393 | { | |
1394 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1395 | mask = mask & ~TAG_MOREDISPLAY; | |
1396 | continue; | |
1397 | } | |
1398 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1399 | break; /* Not a tag we know about */ | |
1400 | } | |
1401 | return retval; | |
1402 | } | |
1403 | ||
1404 | static int | |
fba45db2 KB |
1405 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1406 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1407 | { |
1408 | int result; | |
085dd6e6 | 1409 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1410 | |
1411 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1412 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1413 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1414 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1415 | info); | |
1416 | return result; | |
1417 | } | |
1418 | ||
1419 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1420 | representation of a threadid. */ | |
1421 | ||
1422 | static int | |
fba45db2 KB |
1423 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1424 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1425 | { |
1426 | threadref lclref; | |
1427 | ||
1428 | int_to_threadref (&lclref, *ref); | |
1429 | return remote_get_threadinfo (&lclref, selection, info); | |
1430 | } | |
1431 | ||
1432 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1433 | ||
1434 | static char * | |
fba45db2 KB |
1435 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1436 | threadref *nextthread) | |
c906108c SS |
1437 | { |
1438 | *pkt++ = 'q'; /* info query packet */ | |
1439 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1440 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1441 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1442 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1443 | *pkt = '\0'; | |
1444 | return pkt; | |
1445 | } | |
1446 | ||
1447 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1448 | ||
1449 | static int | |
fba45db2 KB |
1450 | parse_threadlist_response (char *pkt, int result_limit, |
1451 | threadref *original_echo, threadref *resultlist, | |
1452 | int *doneflag) | |
c906108c SS |
1453 | { |
1454 | char *limit; | |
1455 | int count, resultcount, done; | |
1456 | ||
1457 | resultcount = 0; | |
1458 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1459 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1460 | pkt = unpack_byte (pkt, &count); /* count field */ |
1461 | pkt = unpack_nibble (pkt, &done); | |
1462 | /* The first threadid is the argument threadid. */ | |
1463 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1464 | while ((count-- > 0) && (pkt < limit)) | |
1465 | { | |
1466 | pkt = unpack_threadid (pkt, resultlist++); | |
1467 | if (resultcount++ >= result_limit) | |
1468 | break; | |
1469 | } | |
1470 | if (doneflag) | |
1471 | *doneflag = done; | |
1472 | return resultcount; | |
1473 | } | |
1474 | ||
1475 | static int | |
fba45db2 KB |
1476 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1477 | int *done, int *result_count, threadref *threadlist) | |
c906108c SS |
1478 | { |
1479 | static threadref echo_nextthread; | |
085dd6e6 JM |
1480 | char *threadlist_packet = alloca (PBUFSIZ); |
1481 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1482 | int result = 1; |
1483 | ||
1484 | /* Trancate result limit to be smaller than the packet size */ | |
1485 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1486 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1487 | ||
1488 | pack_threadlist_request (threadlist_packet, | |
1489 | startflag, result_limit, nextthread); | |
1490 | putpkt (threadlist_packet); | |
c2d11a7d | 1491 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1492 | |
1493 | *result_count = | |
1494 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1495 | threadlist, done); | |
1496 | ||
1497 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1498 | { | |
1499 | /* FIXME: This is a good reason to drop the packet */ | |
1500 | /* Possably, there is a duplicate response */ | |
1501 | /* Possabilities : | |
1502 | retransmit immediatly - race conditions | |
1503 | retransmit after timeout - yes | |
1504 | exit | |
1505 | wait for packet, then exit | |
1506 | */ | |
1507 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1508 | return 0; /* I choose simply exiting */ | |
1509 | } | |
1510 | if (*result_count <= 0) | |
1511 | { | |
1512 | if (*done != 1) | |
1513 | { | |
1514 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1515 | result = 0; | |
1516 | } | |
1517 | return result; /* break; */ | |
1518 | } | |
1519 | if (*result_count > result_limit) | |
1520 | { | |
1521 | *result_count = 0; | |
1522 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1523 | return 0; | |
1524 | } | |
1525 | return result; | |
1526 | } | |
1527 | ||
1528 | /* This is the interface between remote and threads, remotes upper interface */ | |
1529 | ||
1530 | /* remote_find_new_threads retrieves the thread list and for each | |
1531 | thread in the list, looks up the thread in GDB's internal list, | |
1532 | ading the thread if it does not already exist. This involves | |
1533 | getting partial thread lists from the remote target so, polling the | |
1534 | quit_flag is required. */ | |
1535 | ||
1536 | ||
1537 | /* About this many threadisds fit in a packet. */ | |
1538 | ||
1539 | #define MAXTHREADLISTRESULTS 32 | |
1540 | ||
1541 | static int | |
fba45db2 KB |
1542 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1543 | int looplimit) | |
c906108c SS |
1544 | { |
1545 | int done, i, result_count; | |
1546 | int startflag = 1; | |
1547 | int result = 1; | |
1548 | int loopcount = 0; | |
1549 | static threadref nextthread; | |
1550 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1551 | ||
1552 | done = 0; | |
1553 | while (!done) | |
1554 | { | |
1555 | if (loopcount++ > looplimit) | |
1556 | { | |
1557 | result = 0; | |
1558 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1559 | break; | |
1560 | } | |
1561 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1562 | &done, &result_count, resultthreadlist)) | |
1563 | { | |
1564 | result = 0; | |
1565 | break; | |
1566 | } | |
1567 | /* clear for later iterations */ | |
1568 | startflag = 0; | |
1569 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1570 | if (result_count >= 1) | |
1571 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1572 | i = 0; | |
1573 | while (result_count--) | |
1574 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1575 | break; | |
1576 | } | |
1577 | return result; | |
1578 | } | |
1579 | ||
1580 | static int | |
fba45db2 | 1581 | remote_newthread_step (threadref *ref, void *context) |
c906108c SS |
1582 | { |
1583 | int pid; | |
1584 | ||
1585 | pid = threadref_to_int (ref); | |
1586 | if (!in_thread_list (pid)) | |
1587 | add_thread (pid); | |
1588 | return 1; /* continue iterator */ | |
1589 | } | |
1590 | ||
1591 | #define CRAZY_MAX_THREADS 1000 | |
1592 | ||
1593 | static int | |
fba45db2 | 1594 | remote_current_thread (int oldpid) |
c906108c | 1595 | { |
085dd6e6 | 1596 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1597 | |
1598 | putpkt ("qC"); | |
c2d11a7d | 1599 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1600 | if (buf[0] == 'Q' && buf[1] == 'C') |
1601 | return strtol (&buf[2], NULL, 16); | |
1602 | else | |
1603 | return oldpid; | |
1604 | } | |
1605 | ||
9d1f7ab2 MS |
1606 | /* Find new threads for info threads command. |
1607 | * Original version, using John Metzler's thread protocol. | |
1608 | */ | |
cce74817 JM |
1609 | |
1610 | static void | |
fba45db2 | 1611 | remote_find_new_threads (void) |
c906108c | 1612 | { |
c5aa993b JM |
1613 | remote_threadlist_iterator (remote_newthread_step, 0, |
1614 | CRAZY_MAX_THREADS); | |
c906108c SS |
1615 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1616 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1617 | } |
1618 | ||
9d1f7ab2 MS |
1619 | /* |
1620 | * Find all threads for info threads command. | |
1621 | * Uses new thread protocol contributed by Cisco. | |
1622 | * Falls back and attempts to use the older method (above) | |
1623 | * if the target doesn't respond to the new method. | |
1624 | */ | |
1625 | ||
0f71a2f6 JM |
1626 | static void |
1627 | remote_threads_info (void) | |
1628 | { | |
085dd6e6 JM |
1629 | char *buf = alloca (PBUFSIZ); |
1630 | char *bufp; | |
0f71a2f6 JM |
1631 | int tid; |
1632 | ||
1633 | if (remote_desc == 0) /* paranoia */ | |
1634 | error ("Command can only be used when connected to the remote target."); | |
1635 | ||
9d1f7ab2 MS |
1636 | if (use_threadinfo_query) |
1637 | { | |
1638 | putpkt ("qfThreadInfo"); | |
1639 | bufp = buf; | |
1640 | getpkt (bufp, PBUFSIZ, 0); | |
1641 | if (bufp[0] != '\0') /* q packet recognized */ | |
1642 | { | |
1643 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1644 | { | |
1645 | do | |
1646 | { | |
1647 | tid = strtol (bufp, &bufp, 16); | |
1648 | if (tid != 0 && !in_thread_list (tid)) | |
1649 | add_thread (tid); | |
1650 | } | |
1651 | while (*bufp++ == ','); /* comma-separated list */ | |
1652 | putpkt ("qsThreadInfo"); | |
1653 | bufp = buf; | |
1654 | getpkt (bufp, PBUFSIZ, 0); | |
1655 | } | |
1656 | return; /* done */ | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | /* Else fall back to old method based on jmetzler protocol. */ | |
1661 | use_threadinfo_query = 0; | |
1662 | remote_find_new_threads (); | |
1663 | return; | |
1664 | } | |
1665 | ||
1666 | /* | |
1667 | * Collect a descriptive string about the given thread. | |
1668 | * The target may say anything it wants to about the thread | |
1669 | * (typically info about its blocked / runnable state, name, etc.). | |
1670 | * This string will appear in the info threads display. | |
1671 | * | |
1672 | * Optional: targets are not required to implement this function. | |
1673 | */ | |
1674 | ||
1675 | static char * | |
1676 | remote_threads_extra_info (struct thread_info *tp) | |
1677 | { | |
1678 | int result; | |
1679 | int set; | |
1680 | threadref id; | |
1681 | struct gdb_ext_thread_info threadinfo; | |
1682 | static char display_buf[100]; /* arbitrary... */ | |
1683 | char *bufp = alloca (PBUFSIZ); | |
1684 | int n = 0; /* position in display_buf */ | |
1685 | ||
1686 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1687 | internal_error (__FILE__, __LINE__, |
1688 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1689 | |
1690 | if (use_threadextra_query) | |
1691 | { | |
480ff1fb | 1692 | sprintf (bufp, "qThreadExtraInfo,%x", tp->pid); |
9d1f7ab2 MS |
1693 | putpkt (bufp); |
1694 | getpkt (bufp, PBUFSIZ, 0); | |
1695 | if (bufp[0] != 0) | |
1696 | { | |
1697 | char *p; | |
1698 | ||
1699 | for (p = display_buf; | |
1700 | p < display_buf + sizeof(display_buf) - 1 && | |
1701 | bufp[0] != 0 && | |
1702 | bufp[1] != 0; | |
1703 | p++, bufp+=2) | |
1704 | { | |
1705 | *p = fromhex (bufp[0]) * 16 + fromhex (bufp[1]); | |
1706 | } | |
1707 | *p = 0; | |
1708 | return display_buf; | |
1709 | } | |
0f71a2f6 | 1710 | } |
9d1f7ab2 MS |
1711 | |
1712 | /* If the above query fails, fall back to the old method. */ | |
1713 | use_threadextra_query = 0; | |
1714 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1715 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
1716 | int_to_threadref (&id, tp->pid); | |
1717 | if (remote_get_threadinfo (&id, set, &threadinfo)) | |
1718 | if (threadinfo.active) | |
0f71a2f6 | 1719 | { |
9d1f7ab2 MS |
1720 | if (*threadinfo.shortname) |
1721 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1722 | if (*threadinfo.display) | |
1723 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1724 | if (*threadinfo.more_display) | |
1725 | n += sprintf(&display_buf[n], " Priority: %s", | |
1726 | threadinfo.more_display); | |
1727 | ||
1728 | if (n > 0) | |
c5aa993b | 1729 | { |
9d1f7ab2 MS |
1730 | /* for purely cosmetic reasons, clear up trailing commas */ |
1731 | if (',' == display_buf[n-1]) | |
1732 | display_buf[n-1] = ' '; | |
1733 | return display_buf; | |
c5aa993b | 1734 | } |
0f71a2f6 | 1735 | } |
9d1f7ab2 | 1736 | return NULL; |
0f71a2f6 | 1737 | } |
9d1f7ab2 | 1738 | |
c906108c | 1739 | \f |
c5aa993b | 1740 | |
c906108c SS |
1741 | /* Restart the remote side; this is an extended protocol operation. */ |
1742 | ||
1743 | static void | |
fba45db2 | 1744 | extended_remote_restart (void) |
c906108c | 1745 | { |
085dd6e6 | 1746 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1747 | |
1748 | /* Send the restart command; for reasons I don't understand the | |
1749 | remote side really expects a number after the "R". */ | |
1750 | buf[0] = 'R'; | |
1751 | sprintf (&buf[1], "%x", 0); | |
1752 | putpkt (buf); | |
1753 | ||
1754 | /* Now query for status so this looks just like we restarted | |
1755 | gdbserver from scratch. */ | |
1756 | putpkt ("?"); | |
c2d11a7d | 1757 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1758 | } |
1759 | \f | |
1760 | /* Clean up connection to a remote debugger. */ | |
1761 | ||
1762 | /* ARGSUSED */ | |
1763 | static void | |
fba45db2 | 1764 | remote_close (int quitting) |
c906108c SS |
1765 | { |
1766 | if (remote_desc) | |
1767 | SERIAL_CLOSE (remote_desc); | |
1768 | remote_desc = NULL; | |
1769 | } | |
1770 | ||
1771 | /* Query the remote side for the text, data and bss offsets. */ | |
1772 | ||
1773 | static void | |
fba45db2 | 1774 | get_offsets (void) |
c906108c | 1775 | { |
085dd6e6 JM |
1776 | char *buf = alloca (PBUFSIZ); |
1777 | char *ptr; | |
c906108c SS |
1778 | int lose; |
1779 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1780 | struct section_offsets *offs; | |
1781 | ||
1782 | putpkt ("qOffsets"); | |
1783 | ||
c2d11a7d | 1784 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1785 | |
1786 | if (buf[0] == '\000') | |
1787 | return; /* Return silently. Stub doesn't support | |
1788 | this command. */ | |
1789 | if (buf[0] == 'E') | |
1790 | { | |
1791 | warning ("Remote failure reply: %s", buf); | |
1792 | return; | |
1793 | } | |
1794 | ||
1795 | /* Pick up each field in turn. This used to be done with scanf, but | |
1796 | scanf will make trouble if CORE_ADDR size doesn't match | |
1797 | conversion directives correctly. The following code will work | |
1798 | with any size of CORE_ADDR. */ | |
1799 | text_addr = data_addr = bss_addr = 0; | |
1800 | ptr = buf; | |
1801 | lose = 0; | |
1802 | ||
1803 | if (strncmp (ptr, "Text=", 5) == 0) | |
1804 | { | |
1805 | ptr += 5; | |
1806 | /* Don't use strtol, could lose on big values. */ | |
1807 | while (*ptr && *ptr != ';') | |
1808 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1809 | } | |
1810 | else | |
1811 | lose = 1; | |
1812 | ||
1813 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1814 | { | |
1815 | ptr += 6; | |
1816 | while (*ptr && *ptr != ';') | |
1817 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1818 | } | |
1819 | else | |
1820 | lose = 1; | |
1821 | ||
1822 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1823 | { | |
1824 | ptr += 5; | |
1825 | while (*ptr && *ptr != ';') | |
1826 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1827 | } | |
1828 | else | |
1829 | lose = 1; | |
1830 | ||
1831 | if (lose) | |
1832 | error ("Malformed response to offset query, %s", buf); | |
1833 | ||
1834 | if (symfile_objfile == NULL) | |
1835 | return; | |
1836 | ||
d4f3574e SS |
1837 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1838 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1839 | |
a4c8257b | 1840 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1841 | |
1842 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1843 | because that's what nlmconv does now. The real solution requires changes | |
1844 | to the stub and remote.c that I don't have time to do right now. */ | |
1845 | ||
a4c8257b EZ |
1846 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1847 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1848 | |
1849 | objfile_relocate (symfile_objfile, offs); | |
1850 | } | |
1851 | ||
0f71a2f6 JM |
1852 | /* |
1853 | * Cisco version of section offsets: | |
1854 | * | |
1855 | * Instead of having GDB query the target for the section offsets, | |
1856 | * Cisco lets the target volunteer the information! It's also in | |
1857 | * a different format, so here are the functions that will decode | |
1858 | * a section offset packet from a Cisco target. | |
1859 | */ | |
1860 | ||
1861 | /* | |
1862 | * Function: remote_cisco_section_offsets | |
1863 | * | |
1864 | * Returns: zero for success, non-zero for failure | |
1865 | */ | |
1866 | ||
c5aa993b | 1867 | static int |
c2d11a7d JM |
1868 | remote_cisco_section_offsets (bfd_vma text_addr, |
1869 | bfd_vma data_addr, | |
1870 | bfd_vma bss_addr, | |
1871 | bfd_signed_vma *text_offs, | |
1872 | bfd_signed_vma *data_offs, | |
1873 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1874 | { |
1875 | bfd_vma text_base, data_base, bss_base; | |
1876 | struct minimal_symbol *start; | |
1877 | asection *sect; | |
c5aa993b | 1878 | bfd *abfd; |
0f71a2f6 JM |
1879 | int len; |
1880 | char *p; | |
1881 | ||
1882 | if (symfile_objfile == NULL) | |
c5aa993b | 1883 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1884 | |
1885 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1886 | if (start == NULL) | |
c5aa993b | 1887 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1888 | |
1889 | data_base = bss_base = 0; | |
1890 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1891 | ||
1892 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1893 | for (sect = abfd->sections; |
0f71a2f6 JM |
1894 | sect != 0; |
1895 | sect = sect->next) | |
1896 | { | |
c5aa993b | 1897 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1898 | len = strlen (p); |
1899 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1900 | if (data_base == 0 || | |
1901 | data_base > bfd_get_section_vma (abfd, sect)) | |
1902 | data_base = bfd_get_section_vma (abfd, sect); | |
1903 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1904 | if (bss_base == 0 || |
0f71a2f6 JM |
1905 | bss_base > bfd_get_section_vma (abfd, sect)) |
1906 | bss_base = bfd_get_section_vma (abfd, sect); | |
1907 | } | |
1908 | *text_offs = text_addr - text_base; | |
1909 | *data_offs = data_addr - data_base; | |
c5aa993b | 1910 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1911 | if (remote_debug) |
1912 | { | |
1913 | char tmp[128]; | |
1914 | ||
1915 | sprintf (tmp, "VMA: text = 0x"); | |
1916 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1917 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1918 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1919 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1920 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1921 | fprintf_filtered (gdb_stdlog, tmp); | |
1922 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1923 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1924 | paddr_nz (*text_offs), | |
1925 | paddr_nz (*data_offs), | |
1926 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1927 | } |
1928 | ||
1929 | return 0; | |
1930 | } | |
1931 | ||
1932 | /* | |
1933 | * Function: remote_cisco_objfile_relocate | |
1934 | * | |
1935 | * Relocate the symbol file for a remote target. | |
1936 | */ | |
1937 | ||
96baa820 | 1938 | void |
fba45db2 KB |
1939 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
1940 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
1941 | { |
1942 | struct section_offsets *offs; | |
1943 | ||
c5aa993b | 1944 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1945 | { |
1946 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1947 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1948 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1949 | |
d4f3574e SS |
1950 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1951 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 1952 | |
a4c8257b EZ |
1953 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
1954 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
1955 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
1956 | |
1957 | /* First call the standard objfile_relocate. */ | |
1958 | objfile_relocate (symfile_objfile, offs); | |
1959 | ||
1960 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1961 | the exec target. These entries will control memory transfers |
1962 | from the exec file. */ | |
0f71a2f6 JM |
1963 | |
1964 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1965 | } | |
1966 | } | |
1967 | ||
c906108c SS |
1968 | /* Stub for catch_errors. */ |
1969 | ||
0f71a2f6 | 1970 | static int |
c2d11a7d | 1971 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
1972 | { |
1973 | start_remote (); /* Initialize gdb process mechanisms */ | |
1974 | return 1; | |
1975 | } | |
1976 | ||
c906108c | 1977 | static int |
fba45db2 | 1978 | remote_start_remote (PTR dummy) |
c906108c | 1979 | { |
8edbea78 | 1980 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
1981 | |
1982 | /* Ack any packet which the remote side has already sent. */ | |
1983 | SERIAL_WRITE (remote_desc, "+", 1); | |
1984 | ||
1985 | /* Let the stub know that we want it to return the thread. */ | |
1986 | set_thread (-1, 0); | |
1987 | ||
1988 | inferior_pid = remote_current_thread (inferior_pid); | |
1989 | ||
1990 | get_offsets (); /* Get text, data & bss offsets */ | |
1991 | ||
1992 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 1993 | immediate_quit--; |
c906108c | 1994 | |
0f71a2f6 | 1995 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1996 | } |
1997 | ||
1998 | /* Open a connection to a remote debugger. | |
1999 | NAME is the filename used for communication. */ | |
2000 | ||
2001 | static void | |
fba45db2 | 2002 | remote_open (char *name, int from_tty) |
c906108c SS |
2003 | { |
2004 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2005 | } | |
2006 | ||
43ff13b4 JM |
2007 | /* Just like remote_open, but with asynchronous support. */ |
2008 | static void | |
fba45db2 | 2009 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2010 | { |
2011 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2012 | } | |
2013 | ||
c906108c SS |
2014 | /* Open a connection to a remote debugger using the extended |
2015 | remote gdb protocol. NAME is the filename used for communication. */ | |
2016 | ||
2017 | static void | |
fba45db2 | 2018 | extended_remote_open (char *name, int from_tty) |
c906108c | 2019 | { |
c5aa993b | 2020 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2021 | } |
2022 | ||
43ff13b4 JM |
2023 | /* Just like extended_remote_open, but with asynchronous support. */ |
2024 | static void | |
fba45db2 | 2025 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2026 | { |
c5aa993b | 2027 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2028 | } |
2029 | ||
c906108c SS |
2030 | /* Generic code for opening a connection to a remote target. */ |
2031 | ||
d471ea57 AC |
2032 | static void |
2033 | init_all_packet_configs (void) | |
2034 | { | |
2035 | int i; | |
2036 | update_packet_config (&remote_protocol_P); | |
2037 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
2038 | update_packet_config (&remote_protocol_Z[i]); | |
2039 | /* Force remote_write_bytes to check whether target supports binary | |
2040 | downloading. */ | |
2041 | update_packet_config (&remote_protocol_binary_download); | |
2042 | } | |
2043 | ||
c906108c | 2044 | static void |
fba45db2 KB |
2045 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2046 | int extended_p) | |
c906108c SS |
2047 | { |
2048 | if (name == 0) | |
2049 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2050 | serial device is attached to the remote system\n\ |
2051 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2052 | |
6426a772 JM |
2053 | /* See FIXME above */ |
2054 | wait_forever_enabled_p = 1; | |
2055 | ||
c906108c SS |
2056 | target_preopen (from_tty); |
2057 | ||
2058 | unpush_target (target); | |
2059 | ||
c906108c SS |
2060 | remote_desc = SERIAL_OPEN (name); |
2061 | if (!remote_desc) | |
2062 | perror_with_name (name); | |
2063 | ||
2064 | if (baud_rate != -1) | |
2065 | { | |
2066 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2067 | { | |
2068 | SERIAL_CLOSE (remote_desc); | |
2069 | perror_with_name (name); | |
2070 | } | |
2071 | } | |
2072 | ||
c906108c SS |
2073 | SERIAL_RAW (remote_desc); |
2074 | ||
2075 | /* If there is something sitting in the buffer we might take it as a | |
2076 | response to a command, which would be bad. */ | |
2077 | SERIAL_FLUSH_INPUT (remote_desc); | |
2078 | ||
2079 | if (from_tty) | |
2080 | { | |
2081 | puts_filtered ("Remote debugging using "); | |
2082 | puts_filtered (name); | |
2083 | puts_filtered ("\n"); | |
2084 | } | |
c5aa993b | 2085 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2086 | |
d471ea57 | 2087 | init_all_packet_configs (); |
96baa820 | 2088 | |
c5aa993b | 2089 | general_thread = -2; |
cce74817 | 2090 | continue_thread = -2; |
c906108c | 2091 | |
9d1f7ab2 MS |
2092 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2093 | use_threadinfo_query = 1; | |
2094 | use_threadextra_query = 1; | |
2095 | ||
c906108c SS |
2096 | /* Without this, some commands which require an active target (such |
2097 | as kill) won't work. This variable serves (at least) double duty | |
2098 | as both the pid of the target process (if it has such), and as a | |
2099 | flag indicating that a target is active. These functions should | |
2100 | be split out into seperate variables, especially since GDB will | |
2101 | someday have a notion of debugging several processes. */ | |
2102 | ||
2103 | inferior_pid = MAGIC_NULL_PID; | |
2104 | /* Start the remote connection; if error (0), discard this target. | |
2105 | In particular, if the user quits, be sure to discard it | |
2106 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2107 | if (!catch_errors (remote_start_remote, NULL, |
2108 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2109 | RETURN_MASK_ALL)) |
2110 | { | |
2111 | pop_target (); | |
2112 | return; | |
2113 | } | |
2114 | ||
2115 | if (extended_p) | |
2116 | { | |
2117 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 2118 | char *buf = alloca (PBUFSIZ); |
c906108c | 2119 | putpkt ("!"); |
c2d11a7d | 2120 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
2121 | } |
2122 | } | |
2123 | ||
43ff13b4 JM |
2124 | /* Just like remote_open but with asynchronous support. */ |
2125 | static void | |
fba45db2 KB |
2126 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2127 | int extended_p) | |
43ff13b4 JM |
2128 | { |
2129 | if (name == 0) | |
2130 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2131 | serial device is attached to the remote system\n\ |
2132 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2133 | |
2134 | target_preopen (from_tty); | |
2135 | ||
2136 | unpush_target (target); | |
2137 | ||
43ff13b4 JM |
2138 | remote_desc = SERIAL_OPEN (name); |
2139 | if (!remote_desc) | |
2140 | perror_with_name (name); | |
2141 | ||
2142 | if (baud_rate != -1) | |
2143 | { | |
2144 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2145 | { | |
2146 | SERIAL_CLOSE (remote_desc); | |
2147 | perror_with_name (name); | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | SERIAL_RAW (remote_desc); | |
2152 | ||
2153 | /* If there is something sitting in the buffer we might take it as a | |
2154 | response to a command, which would be bad. */ | |
2155 | SERIAL_FLUSH_INPUT (remote_desc); | |
2156 | ||
2157 | if (from_tty) | |
2158 | { | |
2159 | puts_filtered ("Remote debugging using "); | |
2160 | puts_filtered (name); | |
2161 | puts_filtered ("\n"); | |
2162 | } | |
2163 | ||
c5aa993b | 2164 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2165 | |
d471ea57 | 2166 | init_all_packet_configs (); |
43ff13b4 | 2167 | |
c5aa993b | 2168 | general_thread = -2; |
43ff13b4 JM |
2169 | continue_thread = -2; |
2170 | ||
9d1f7ab2 MS |
2171 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2172 | use_threadinfo_query = 1; | |
2173 | use_threadextra_query = 1; | |
2174 | ||
43ff13b4 JM |
2175 | /* Without this, some commands which require an active target (such |
2176 | as kill) won't work. This variable serves (at least) double duty | |
2177 | as both the pid of the target process (if it has such), and as a | |
2178 | flag indicating that a target is active. These functions should | |
2179 | be split out into seperate variables, especially since GDB will | |
2180 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2181 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2182 | |
2183 | /* With this target we start out by owning the terminal. */ | |
2184 | remote_async_terminal_ours_p = 1; | |
2185 | ||
2186 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2187 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2188 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2189 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2190 | around this. Eventually a mechanism that allows | |
2191 | wait_for_inferior() to expect/get timeouts will be | |
2192 | implemented. */ | |
2193 | wait_forever_enabled_p = 0; | |
2194 | ||
43ff13b4 JM |
2195 | /* Start the remote connection; if error (0), discard this target. |
2196 | In particular, if the user quits, be sure to discard it | |
2197 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2198 | if (!catch_errors (remote_start_remote, NULL, |
2199 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2200 | RETURN_MASK_ALL)) |
2201 | { | |
43ff13b4 | 2202 | pop_target (); |
6426a772 | 2203 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2204 | return; |
2205 | } | |
2206 | ||
6426a772 JM |
2207 | wait_forever_enabled_p = 1; |
2208 | ||
2209 | if (extended_p) | |
43ff13b4 | 2210 | { |
6426a772 JM |
2211 | /* tell the remote that we're using the extended protocol. */ |
2212 | char *buf = alloca (PBUFSIZ); | |
2213 | putpkt ("!"); | |
c2d11a7d | 2214 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2215 | } |
43ff13b4 JM |
2216 | } |
2217 | ||
c906108c SS |
2218 | /* This takes a program previously attached to and detaches it. After |
2219 | this is done, GDB can be used to debug some other program. We | |
2220 | better not have left any breakpoints in the target program or it'll | |
2221 | die when it hits one. */ | |
2222 | ||
2223 | static void | |
fba45db2 | 2224 | remote_detach (char *args, int from_tty) |
c906108c | 2225 | { |
085dd6e6 | 2226 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2227 | |
2228 | if (args) | |
2229 | error ("Argument given to \"detach\" when remotely debugging."); | |
2230 | ||
2231 | /* Tell the remote target to detach. */ | |
2232 | strcpy (buf, "D"); | |
c2d11a7d | 2233 | remote_send (buf, PBUFSIZ); |
c906108c | 2234 | |
cca728d0 | 2235 | target_mourn_inferior (); |
c906108c SS |
2236 | if (from_tty) |
2237 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2238 | |
c906108c SS |
2239 | } |
2240 | ||
43ff13b4 JM |
2241 | /* Same as remote_detach, but with async support. */ |
2242 | static void | |
fba45db2 | 2243 | remote_async_detach (char *args, int from_tty) |
43ff13b4 JM |
2244 | { |
2245 | char *buf = alloca (PBUFSIZ); | |
2246 | ||
2247 | if (args) | |
2248 | error ("Argument given to \"detach\" when remotely debugging."); | |
2249 | ||
2250 | /* Tell the remote target to detach. */ | |
2251 | strcpy (buf, "D"); | |
c2d11a7d | 2252 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2253 | |
2254 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2255 | if (target_is_async_p ()) |
c2c6d25f | 2256 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2257 | |
cca728d0 | 2258 | target_mourn_inferior (); |
43ff13b4 JM |
2259 | if (from_tty) |
2260 | puts_filtered ("Ending remote debugging.\n"); | |
2261 | } | |
2262 | ||
c906108c SS |
2263 | /* Convert hex digit A to a number. */ |
2264 | ||
2265 | int | |
fba45db2 | 2266 | fromhex (int a) |
c906108c SS |
2267 | { |
2268 | if (a >= '0' && a <= '9') | |
2269 | return a - '0'; | |
2270 | else if (a >= 'a' && a <= 'f') | |
2271 | return a - 'a' + 10; | |
2272 | else if (a >= 'A' && a <= 'F') | |
2273 | return a - 'A' + 10; | |
c5aa993b | 2274 | else |
c906108c SS |
2275 | error ("Reply contains invalid hex digit %d", a); |
2276 | } | |
2277 | ||
2278 | /* Convert number NIB to a hex digit. */ | |
2279 | ||
2280 | static int | |
fba45db2 | 2281 | tohex (int nib) |
c906108c SS |
2282 | { |
2283 | if (nib < 10) | |
c5aa993b | 2284 | return '0' + nib; |
c906108c | 2285 | else |
c5aa993b | 2286 | return 'a' + nib - 10; |
c906108c SS |
2287 | } |
2288 | \f | |
2289 | /* Tell the remote machine to resume. */ | |
2290 | ||
2291 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2292 | ||
2293 | static int last_sent_step; | |
2294 | ||
2295 | static void | |
fba45db2 | 2296 | remote_resume (int pid, int step, enum target_signal siggnal) |
c906108c | 2297 | { |
085dd6e6 | 2298 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2299 | |
2300 | if (pid == -1) | |
2301 | set_thread (0, 0); /* run any thread */ | |
2302 | else | |
2303 | set_thread (pid, 0); /* run this thread */ | |
2304 | ||
c906108c SS |
2305 | last_sent_signal = siggnal; |
2306 | last_sent_step = step; | |
2307 | ||
2308 | /* A hook for when we need to do something at the last moment before | |
2309 | resumption. */ | |
2310 | if (target_resume_hook) | |
2311 | (*target_resume_hook) (); | |
2312 | ||
2313 | if (siggnal != TARGET_SIGNAL_0) | |
2314 | { | |
2315 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2316 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2317 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2318 | buf[3] = '\0'; |
2319 | } | |
2320 | else | |
c5aa993b | 2321 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2322 | |
2323 | putpkt (buf); | |
2324 | } | |
43ff13b4 JM |
2325 | |
2326 | /* Same as remote_resume, but with async support. */ | |
2327 | static void | |
fba45db2 | 2328 | remote_async_resume (int pid, int step, enum target_signal siggnal) |
43ff13b4 JM |
2329 | { |
2330 | char *buf = alloca (PBUFSIZ); | |
2331 | ||
2332 | if (pid == -1) | |
2333 | set_thread (0, 0); /* run any thread */ | |
2334 | else | |
2335 | set_thread (pid, 0); /* run this thread */ | |
2336 | ||
43ff13b4 JM |
2337 | last_sent_signal = siggnal; |
2338 | last_sent_step = step; | |
2339 | ||
2340 | /* A hook for when we need to do something at the last moment before | |
2341 | resumption. */ | |
2342 | if (target_resume_hook) | |
2343 | (*target_resume_hook) (); | |
2344 | ||
43ff13b4 JM |
2345 | if (siggnal != TARGET_SIGNAL_0) |
2346 | { | |
2347 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2348 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2349 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2350 | buf[3] = '\0'; |
2351 | } | |
2352 | else | |
c5aa993b | 2353 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 | 2354 | |
2acceee2 JM |
2355 | /* We are about to start executing the inferior, let's register it |
2356 | with the event loop. NOTE: this is the one place where all the | |
2357 | execution commands end up. We could alternatively do this in each | |
2358 | of the execution commands in infcmd.c.*/ | |
2359 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2360 | into infcmd.c in order to allow inferior function calls to work | |
2361 | NOT asynchronously. */ | |
ed9a39eb | 2362 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2363 | target_async (inferior_event_handler, 0); |
2364 | /* Tell the world that the target is now executing. */ | |
2365 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2366 | this? Instead, should the client of target just assume (for | |
2367 | async targets) that the target is going to start executing? Is | |
2368 | this information already found in the continuation block? */ | |
ed9a39eb | 2369 | if (target_is_async_p ()) |
2acceee2 | 2370 | target_executing = 1; |
43ff13b4 JM |
2371 | putpkt (buf); |
2372 | } | |
c906108c | 2373 | \f |
43ff13b4 JM |
2374 | |
2375 | /* Set up the signal handler for SIGINT, while the target is | |
2376 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2377 | static void | |
fba45db2 | 2378 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2379 | { |
c5aa993b | 2380 | sigint_remote_token = |
43ff13b4 JM |
2381 | create_async_signal_handler (async_remote_interrupt, NULL); |
2382 | signal (SIGINT, handle_remote_sigint); | |
2383 | } | |
2384 | ||
2385 | /* Signal handler for SIGINT, while the target is executing. */ | |
2386 | static void | |
fba45db2 | 2387 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2388 | { |
2389 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2390 | sigint_remote_twice_token = |
43ff13b4 JM |
2391 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2392 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2393 | } | |
2394 | ||
2395 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2396 | sent once. It will take effect the second time that the user sends | |
2397 | a ^C. */ | |
2398 | static void | |
fba45db2 | 2399 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2400 | { |
2401 | signal (sig, handle_sigint); | |
c5aa993b | 2402 | sigint_remote_twice_token = |
2df3850c | 2403 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2404 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2405 | } | |
2406 | ||
6426a772 | 2407 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2408 | to a ^C. */ |
c5aa993b | 2409 | static void |
fba45db2 | 2410 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2411 | { |
2412 | if (remote_debug) | |
2413 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2414 | ||
2415 | target_stop (); | |
2416 | } | |
2417 | ||
2418 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2419 | up on the target alltogether. */ | |
2df3850c | 2420 | void |
fba45db2 | 2421 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2422 | { |
2df3850c JM |
2423 | if (remote_debug) |
2424 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2425 | /* Do something only if the target was not killed by the previous |
2426 | cntl-C. */ | |
2427 | if (target_executing) | |
2428 | { | |
2429 | interrupt_query (); | |
2430 | signal (SIGINT, handle_remote_sigint); | |
2431 | } | |
43ff13b4 JM |
2432 | } |
2433 | ||
2434 | /* Reinstall the usual SIGINT handlers, after the target has | |
2435 | stopped. */ | |
6426a772 JM |
2436 | static void |
2437 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2438 | { |
2439 | signal (SIGINT, handle_sigint); | |
2440 | if (sigint_remote_twice_token) | |
c2c6d25f | 2441 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2442 | if (sigint_remote_token) |
c2c6d25f | 2443 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2444 | } |
2445 | ||
c906108c SS |
2446 | /* Send ^C to target to halt it. Target will respond, and send us a |
2447 | packet. */ | |
507f3c78 | 2448 | static void (*ofunc) (int); |
c906108c | 2449 | |
7a292a7a SS |
2450 | /* The command line interface's stop routine. This function is installed |
2451 | as a signal handler for SIGINT. The first time a user requests a | |
2452 | stop, we call remote_stop to send a break or ^C. If there is no | |
2453 | response from the target (it didn't stop when the user requested it), | |
2454 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2455 | static void |
fba45db2 | 2456 | remote_interrupt (int signo) |
c906108c | 2457 | { |
7a292a7a SS |
2458 | /* If this doesn't work, try more severe steps. */ |
2459 | signal (signo, remote_interrupt_twice); | |
2460 | ||
2461 | if (remote_debug) | |
0f71a2f6 | 2462 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2463 | |
2464 | target_stop (); | |
2465 | } | |
2466 | ||
2467 | /* The user typed ^C twice. */ | |
2468 | ||
2469 | static void | |
fba45db2 | 2470 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2471 | { |
2472 | signal (signo, ofunc); | |
2473 | interrupt_query (); | |
c906108c SS |
2474 | signal (signo, remote_interrupt); |
2475 | } | |
7a292a7a SS |
2476 | |
2477 | /* This is the generic stop called via the target vector. When a target | |
2478 | interrupt is requested, either by the command line or the GUI, we | |
2479 | will eventually end up here. */ | |
c906108c | 2480 | static void |
fba45db2 | 2481 | remote_stop (void) |
c906108c | 2482 | { |
7a292a7a SS |
2483 | /* Send a break or a ^C, depending on user preference. */ |
2484 | if (remote_debug) | |
0f71a2f6 | 2485 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2486 | |
7a292a7a SS |
2487 | if (remote_break) |
2488 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2489 | else |
7a292a7a | 2490 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2491 | } |
2492 | ||
2493 | /* Ask the user what to do when an interrupt is received. */ | |
2494 | ||
2495 | static void | |
fba45db2 | 2496 | interrupt_query (void) |
c906108c SS |
2497 | { |
2498 | target_terminal_ours (); | |
2499 | ||
2500 | if (query ("Interrupted while waiting for the program.\n\ | |
2501 | Give up (and stop debugging it)? ")) | |
2502 | { | |
2503 | target_mourn_inferior (); | |
2504 | return_to_top_level (RETURN_QUIT); | |
2505 | } | |
2506 | ||
2507 | target_terminal_inferior (); | |
2508 | } | |
2509 | ||
6426a772 JM |
2510 | /* Enable/disable target terminal ownership. Most targets can use |
2511 | terminal groups to control terminal ownership. Remote targets are | |
2512 | different in that explicit transfer of ownership to/from GDB/target | |
2513 | is required. */ | |
2514 | ||
2515 | static void | |
2516 | remote_async_terminal_inferior (void) | |
2517 | { | |
2518 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2519 | sync_execution here. This function should only be called when | |
2520 | GDB is resuming the inferior in the forground. A background | |
2521 | resume (``run&'') should leave GDB in control of the terminal and | |
2522 | consequently should not call this code. */ | |
2523 | if (!sync_execution) | |
2524 | return; | |
2525 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2526 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2527 | to an asynchronous target with a synchronous command calls this | |
2528 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2529 | stops trying to transfer the terminal to the target when it | |
2530 | shouldn't this guard can go away. */ | |
2531 | if (!remote_async_terminal_ours_p) | |
2532 | return; | |
2533 | delete_file_handler (input_fd); | |
2534 | remote_async_terminal_ours_p = 0; | |
2535 | initialize_sigint_signal_handler (); | |
2536 | /* NOTE: At this point we could also register our selves as the | |
2537 | recipient of all input. Any characters typed could then be | |
2538 | passed on down to the target. */ | |
2539 | } | |
2540 | ||
2541 | static void | |
2542 | remote_async_terminal_ours (void) | |
2543 | { | |
2544 | /* See FIXME in remote_async_terminal_inferior. */ | |
2545 | if (!sync_execution) | |
2546 | return; | |
2547 | /* See FIXME in remote_async_terminal_inferior. */ | |
2548 | if (remote_async_terminal_ours_p) | |
2549 | return; | |
2550 | cleanup_sigint_signal_handler (NULL); | |
2551 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2552 | remote_async_terminal_ours_p = 1; | |
2553 | } | |
2554 | ||
c906108c SS |
2555 | /* If nonzero, ignore the next kill. */ |
2556 | ||
2557 | int kill_kludge; | |
2558 | ||
2559 | void | |
917317f4 | 2560 | remote_console_output (char *msg) |
c906108c SS |
2561 | { |
2562 | char *p; | |
2563 | ||
c5aa993b | 2564 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2565 | { |
2566 | char tb[2]; | |
2567 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2568 | tb[0] = c; | |
2569 | tb[1] = 0; | |
43ff13b4 | 2570 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2571 | } |
917317f4 | 2572 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2573 | } |
2574 | ||
0f71a2f6 JM |
2575 | /* Wait until the remote machine stops, then return, |
2576 | storing status in STATUS just as `wait' would. | |
2577 | Returns "pid", which in the case of a multi-threaded | |
2578 | remote OS, is the thread-id. */ | |
c906108c SS |
2579 | |
2580 | static int | |
fba45db2 | 2581 | remote_wait (int pid, struct target_waitstatus *status) |
c906108c | 2582 | { |
085dd6e6 | 2583 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2584 | int thread_num = -1; |
2585 | ||
2586 | status->kind = TARGET_WAITKIND_EXITED; | |
2587 | status->value.integer = 0; | |
2588 | ||
2589 | while (1) | |
2590 | { | |
2591 | unsigned char *p; | |
2592 | ||
c906108c | 2593 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2594 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2595 | signal (SIGINT, ofunc); |
2596 | ||
2597 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2598 | collection of trace data) every time the target stops. */ |
c906108c SS |
2599 | if (target_wait_loop_hook) |
2600 | (*target_wait_loop_hook) (); | |
2601 | ||
2602 | switch (buf[0]) | |
2603 | { | |
2604 | case 'E': /* Error of some sort */ | |
2605 | warning ("Remote failure reply: %s", buf); | |
2606 | continue; | |
2607 | case 'T': /* Status with PC, SP, FP, ... */ | |
2608 | { | |
2609 | int i; | |
2610 | long regno; | |
e6cbd02a | 2611 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2612 | |
2613 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2614 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2615 | ss = signal number |
2616 | n... = register number | |
2617 | r... = register contents | |
2618 | */ | |
c906108c SS |
2619 | p = &buf[3]; /* after Txx */ |
2620 | ||
2621 | while (*p) | |
2622 | { | |
2623 | unsigned char *p1; | |
2624 | char *p_temp; | |
2625 | ||
2626 | /* Read the register number */ | |
2627 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2628 | p1 = (unsigned char *) p_temp; |
c906108c | 2629 | |
c5aa993b | 2630 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2631 | { |
2632 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2633 | if (p1 == NULL) | |
2634 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2635 | Packet: '%s'\n", | |
2636 | p, buf); | |
2637 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2638 | { | |
2639 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2640 | record_currthread (thread_num); | |
2641 | p = (unsigned char *) p_temp; | |
2642 | } | |
2643 | } | |
2644 | else | |
2645 | { | |
2646 | p = p1; | |
2647 | ||
2648 | if (*p++ != ':') | |
2649 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2650 | Packet: '%s'\n", | |
2651 | p, buf); | |
2652 | ||
2653 | if (regno >= NUM_REGS) | |
2654 | warning ("Remote sent bad register number %ld: %s\n\ | |
2655 | Packet: '%s'\n", | |
2656 | regno, p, buf); | |
2657 | ||
2658 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2659 | { | |
2660 | if (p[0] == 0 || p[1] == 0) | |
2661 | warning ("Remote reply is too short: %s", buf); | |
2662 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2663 | p += 2; | |
2664 | } | |
2665 | supply_register (regno, regs); | |
2666 | } | |
2667 | ||
2668 | if (*p++ != ';') | |
2669 | { | |
2670 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2671 | warning (" here: %s", p); |
c906108c SS |
2672 | } |
2673 | } | |
2674 | } | |
2675 | /* fall through */ | |
2676 | case 'S': /* Old style status, just signal only */ | |
2677 | status->kind = TARGET_WAITKIND_STOPPED; | |
2678 | status->value.sig = (enum target_signal) | |
2679 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2680 | ||
0f71a2f6 JM |
2681 | if (buf[3] == 'p') |
2682 | { | |
2683 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2684 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2685 | |
2686 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2687 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2688 | value_from_string ("PDEBUG-")); |
2689 | cisco_kernel_mode = 0; | |
2690 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2691 | record_currthread (thread_num); | |
2692 | } | |
2693 | else if (buf[3] == 'k') | |
2694 | { | |
2695 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2696 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2697 | |
2698 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2699 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2700 | value_from_string ("KDEBUG-")); |
2701 | cisco_kernel_mode = 1; | |
2702 | } | |
c906108c | 2703 | goto got_status; |
0f71a2f6 JM |
2704 | case 'N': /* Cisco special: status and offsets */ |
2705 | { | |
2706 | bfd_vma text_addr, data_addr, bss_addr; | |
2707 | bfd_signed_vma text_off, data_off, bss_off; | |
2708 | unsigned char *p1; | |
2709 | ||
2710 | status->kind = TARGET_WAITKIND_STOPPED; | |
2711 | status->value.sig = (enum target_signal) | |
2712 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2713 | ||
c5aa993b | 2714 | if (symfile_objfile == NULL) |
0f71a2f6 | 2715 | { |
d4f3574e | 2716 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2717 | Packet Dropped"); |
2718 | goto got_status; | |
2719 | } | |
2720 | ||
2721 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2722 | * where AA is the signal number, TT is the new text | |
2723 | * address, DD * is the new data address, and BB is the | |
2724 | * new bss address. */ | |
2725 | ||
2726 | p = &buf[3]; | |
2727 | text_addr = strtoul (p, (char **) &p1, 16); | |
2728 | if (p1 == p || *p1 != ';') | |
2729 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2730 | p = p1 + 1; | |
2731 | data_addr = strtoul (p, (char **) &p1, 16); | |
2732 | if (p1 == p || *p1 != ';') | |
2733 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2734 | p = p1 + 1; | |
2735 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2736 | if (p1 == p) |
0f71a2f6 JM |
2737 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2738 | ||
2739 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2740 | &text_off, &data_off, &bss_off) | |
2741 | == 0) | |
c5aa993b | 2742 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2743 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2744 | ||
2745 | goto got_status; | |
2746 | } | |
c906108c SS |
2747 | case 'W': /* Target exited */ |
2748 | { | |
2749 | /* The remote process exited. */ | |
2750 | status->kind = TARGET_WAITKIND_EXITED; | |
2751 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2752 | goto got_status; | |
2753 | } | |
2754 | case 'X': | |
2755 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2756 | status->value.sig = (enum target_signal) | |
2757 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2758 | kill_kludge = 1; | |
2759 | ||
2760 | goto got_status; | |
2761 | case 'O': /* Console output */ | |
2762 | remote_console_output (buf + 1); | |
2763 | continue; | |
2764 | case '\0': | |
2765 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2766 | { | |
2767 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2768 | the remote system doesn't support it. */ |
c906108c SS |
2769 | target_terminal_ours_for_output (); |
2770 | printf_filtered | |
2771 | ("Can't send signals to this remote system. %s not sent.\n", | |
2772 | target_signal_to_name (last_sent_signal)); | |
2773 | last_sent_signal = TARGET_SIGNAL_0; | |
2774 | target_terminal_inferior (); | |
2775 | ||
2776 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2777 | putpkt ((char *) buf); | |
2778 | continue; | |
2779 | } | |
2780 | /* else fallthrough */ | |
2781 | default: | |
2782 | warning ("Invalid remote reply: %s", buf); | |
2783 | continue; | |
2784 | } | |
2785 | } | |
c5aa993b | 2786 | got_status: |
c906108c SS |
2787 | if (thread_num != -1) |
2788 | { | |
c906108c SS |
2789 | return thread_num; |
2790 | } | |
2791 | return inferior_pid; | |
2792 | } | |
2793 | ||
43ff13b4 JM |
2794 | /* Async version of remote_wait. */ |
2795 | static int | |
fba45db2 | 2796 | remote_async_wait (int pid, struct target_waitstatus *status) |
43ff13b4 JM |
2797 | { |
2798 | unsigned char *buf = alloca (PBUFSIZ); | |
2799 | int thread_num = -1; | |
2800 | ||
2801 | status->kind = TARGET_WAITKIND_EXITED; | |
2802 | status->value.integer = 0; | |
2803 | ||
2804 | while (1) | |
2805 | { | |
2806 | unsigned char *p; | |
c5aa993b | 2807 | |
ed9a39eb | 2808 | if (!target_is_async_p ()) |
43ff13b4 | 2809 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2810 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2811 | _never_ wait for ever -> test on target_is_async_p(). | |
2812 | However, before we do that we need to ensure that the caller | |
2813 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 2814 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 2815 | if (!target_is_async_p ()) |
43ff13b4 JM |
2816 | signal (SIGINT, ofunc); |
2817 | ||
2818 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2819 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2820 | if (target_wait_loop_hook) |
2821 | (*target_wait_loop_hook) (); | |
2822 | ||
2823 | switch (buf[0]) | |
2824 | { | |
2825 | case 'E': /* Error of some sort */ | |
2826 | warning ("Remote failure reply: %s", buf); | |
2827 | continue; | |
2828 | case 'T': /* Status with PC, SP, FP, ... */ | |
2829 | { | |
2830 | int i; | |
2831 | long regno; | |
e6cbd02a | 2832 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
2833 | |
2834 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2835 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2836 | ss = signal number |
2837 | n... = register number | |
2838 | r... = register contents | |
2839 | */ | |
43ff13b4 JM |
2840 | p = &buf[3]; /* after Txx */ |
2841 | ||
2842 | while (*p) | |
2843 | { | |
2844 | unsigned char *p1; | |
2845 | char *p_temp; | |
2846 | ||
2847 | /* Read the register number */ | |
2848 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2849 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2850 | |
c5aa993b | 2851 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2852 | { |
2853 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2854 | if (p1 == NULL) | |
2855 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2856 | Packet: '%s'\n", | |
2857 | p, buf); | |
2858 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2859 | { | |
2860 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2861 | record_currthread (thread_num); | |
2862 | p = (unsigned char *) p_temp; | |
2863 | } | |
2864 | } | |
2865 | else | |
2866 | { | |
2867 | p = p1; | |
2868 | ||
2869 | if (*p++ != ':') | |
2870 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2871 | Packet: '%s'\n", | |
2872 | p, buf); | |
2873 | ||
2874 | if (regno >= NUM_REGS) | |
2875 | warning ("Remote sent bad register number %ld: %s\n\ | |
2876 | Packet: '%s'\n", | |
2877 | regno, p, buf); | |
2878 | ||
2879 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2880 | { | |
2881 | if (p[0] == 0 || p[1] == 0) | |
2882 | warning ("Remote reply is too short: %s", buf); | |
2883 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2884 | p += 2; | |
2885 | } | |
2886 | supply_register (regno, regs); | |
2887 | } | |
2888 | ||
2889 | if (*p++ != ';') | |
2890 | { | |
2891 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2892 | warning (" here: %s", p); |
43ff13b4 JM |
2893 | } |
2894 | } | |
2895 | } | |
2896 | /* fall through */ | |
2897 | case 'S': /* Old style status, just signal only */ | |
2898 | status->kind = TARGET_WAITKIND_STOPPED; | |
2899 | status->value.sig = (enum target_signal) | |
2900 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2901 | ||
2902 | if (buf[3] == 'p') | |
2903 | { | |
2904 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2905 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2906 | |
2907 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2908 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2909 | value_from_string ("PDEBUG-")); |
2910 | cisco_kernel_mode = 0; | |
2911 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2912 | record_currthread (thread_num); | |
2913 | } | |
2914 | else if (buf[3] == 'k') | |
2915 | { | |
2916 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2917 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2918 | |
2919 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2920 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2921 | value_from_string ("KDEBUG-")); |
2922 | cisco_kernel_mode = 1; | |
2923 | } | |
2924 | goto got_status; | |
2925 | case 'N': /* Cisco special: status and offsets */ | |
2926 | { | |
2927 | bfd_vma text_addr, data_addr, bss_addr; | |
2928 | bfd_signed_vma text_off, data_off, bss_off; | |
2929 | unsigned char *p1; | |
2930 | ||
2931 | status->kind = TARGET_WAITKIND_STOPPED; | |
2932 | status->value.sig = (enum target_signal) | |
2933 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2934 | ||
c5aa993b | 2935 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2936 | { |
2937 | warning ("Relocation packet recieved with no symbol file. \ | |
2938 | Packet Dropped"); | |
2939 | goto got_status; | |
2940 | } | |
2941 | ||
2942 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2943 | * where AA is the signal number, TT is the new text | |
2944 | * address, DD * is the new data address, and BB is the | |
2945 | * new bss address. */ | |
2946 | ||
2947 | p = &buf[3]; | |
2948 | text_addr = strtoul (p, (char **) &p1, 16); | |
2949 | if (p1 == p || *p1 != ';') | |
2950 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2951 | p = p1 + 1; | |
2952 | data_addr = strtoul (p, (char **) &p1, 16); | |
2953 | if (p1 == p || *p1 != ';') | |
2954 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2955 | p = p1 + 1; | |
2956 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2957 | if (p1 == p) |
43ff13b4 JM |
2958 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2959 | ||
2960 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2961 | &text_off, &data_off, &bss_off) | |
2962 | == 0) | |
c5aa993b | 2963 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2964 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2965 | ||
2966 | goto got_status; | |
2967 | } | |
2968 | case 'W': /* Target exited */ | |
2969 | { | |
2970 | /* The remote process exited. */ | |
2971 | status->kind = TARGET_WAITKIND_EXITED; | |
2972 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2973 | goto got_status; | |
2974 | } | |
2975 | case 'X': | |
2976 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2977 | status->value.sig = (enum target_signal) | |
2978 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2979 | kill_kludge = 1; | |
2980 | ||
2981 | goto got_status; | |
2982 | case 'O': /* Console output */ | |
2983 | remote_console_output (buf + 1); | |
c4093a6a JM |
2984 | /* Return immediately to the event loop. The event loop will |
2985 | still be waiting on the inferior afterwards. */ | |
2986 | status->kind = TARGET_WAITKIND_IGNORE; | |
2987 | goto got_status; | |
43ff13b4 JM |
2988 | case '\0': |
2989 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2990 | { | |
2991 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2992 | the remote system doesn't support it. */ |
43ff13b4 JM |
2993 | target_terminal_ours_for_output (); |
2994 | printf_filtered | |
2995 | ("Can't send signals to this remote system. %s not sent.\n", | |
2996 | target_signal_to_name (last_sent_signal)); | |
2997 | last_sent_signal = TARGET_SIGNAL_0; | |
2998 | target_terminal_inferior (); | |
2999 | ||
3000 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3001 | putpkt ((char *) buf); | |
3002 | continue; | |
3003 | } | |
3004 | /* else fallthrough */ | |
3005 | default: | |
3006 | warning ("Invalid remote reply: %s", buf); | |
3007 | continue; | |
3008 | } | |
3009 | } | |
c5aa993b | 3010 | got_status: |
43ff13b4 JM |
3011 | if (thread_num != -1) |
3012 | { | |
3013 | return thread_num; | |
3014 | } | |
3015 | return inferior_pid; | |
3016 | } | |
3017 | ||
c906108c SS |
3018 | /* Number of bytes of registers this stub implements. */ |
3019 | ||
3020 | static int register_bytes_found; | |
3021 | ||
3022 | /* Read the remote registers into the block REGS. */ | |
3023 | /* Currently we just read all the registers, so we don't use regno. */ | |
3024 | ||
3025 | /* ARGSUSED */ | |
3026 | static void | |
fba45db2 | 3027 | remote_fetch_registers (int regno) |
c906108c | 3028 | { |
085dd6e6 | 3029 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3030 | int i; |
3031 | char *p; | |
7302a204 | 3032 | char *regs = alloca (REGISTER_BYTES); |
c906108c SS |
3033 | |
3034 | set_thread (inferior_pid, 1); | |
3035 | ||
3036 | sprintf (buf, "g"); | |
c2d11a7d | 3037 | remote_send (buf, PBUFSIZ); |
c906108c | 3038 | |
11cf8741 JM |
3039 | /* Save the size of the packet sent to us by the target. Its used |
3040 | as a heuristic when determining the max size of packets that the | |
3041 | target can safely receive. */ | |
3042 | if (actual_register_packet_size == 0) | |
3043 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
3044 | |
3045 | /* Unimplemented registers read as all bits zero. */ | |
3046 | memset (regs, 0, REGISTER_BYTES); | |
3047 | ||
3048 | /* We can get out of synch in various cases. If the first character | |
3049 | in the buffer is not a hex character, assume that has happened | |
3050 | and try to fetch another packet to read. */ | |
3051 | while ((buf[0] < '0' || buf[0] > '9') | |
3052 | && (buf[0] < 'a' || buf[0] > 'f') | |
3053 | && buf[0] != 'x') /* New: unavailable register value */ | |
3054 | { | |
3055 | if (remote_debug) | |
0f71a2f6 JM |
3056 | fprintf_unfiltered (gdb_stdlog, |
3057 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 3058 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3059 | } |
3060 | ||
3061 | /* Reply describes registers byte by byte, each byte encoded as two | |
3062 | hex characters. Suck them all up, then supply them to the | |
3063 | register cacheing/storage mechanism. */ | |
3064 | ||
3065 | p = buf; | |
3066 | for (i = 0; i < REGISTER_BYTES; i++) | |
3067 | { | |
3068 | if (p[0] == 0) | |
3069 | break; | |
3070 | if (p[1] == 0) | |
3071 | { | |
3072 | warning ("Remote reply is of odd length: %s", buf); | |
3073 | /* Don't change register_bytes_found in this case, and don't | |
3074 | print a second warning. */ | |
3075 | goto supply_them; | |
3076 | } | |
3077 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3078 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3079 | else |
3080 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3081 | p += 2; | |
3082 | } | |
3083 | ||
3084 | if (i != register_bytes_found) | |
3085 | { | |
3086 | register_bytes_found = i; | |
2649061d AC |
3087 | if (REGISTER_BYTES_OK_P () |
3088 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3089 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3090 | } |
c5aa993b JM |
3091 | |
3092 | supply_them: | |
c906108c | 3093 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3094 | { |
3095 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3096 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
7302a204 | 3097 | set_register_cached (i, -1); |
c5aa993b | 3098 | } |
c906108c SS |
3099 | } |
3100 | ||
3101 | /* Prepare to store registers. Since we may send them all (using a | |
3102 | 'G' request), we have to read out the ones we don't want to change | |
3103 | first. */ | |
3104 | ||
c5aa993b | 3105 | static void |
fba45db2 | 3106 | remote_prepare_to_store (void) |
c906108c SS |
3107 | { |
3108 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3109 | switch (remote_protocol_P.support) |
3110 | { | |
3111 | case PACKET_DISABLE: | |
3112 | case PACKET_SUPPORT_UNKNOWN: | |
3113 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3114 | break; | |
3115 | case PACKET_ENABLE: | |
3116 | break; | |
3117 | } | |
3118 | } | |
3119 | ||
3120 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3121 | packet was not recognized. */ | |
3122 | ||
3123 | static int | |
c2d11a7d | 3124 | store_register_using_P (int regno) |
5a2468f5 JM |
3125 | { |
3126 | /* Try storing a single register. */ | |
3127 | char *buf = alloca (PBUFSIZ); | |
3128 | char *regp; | |
3129 | char *p; | |
3130 | int i; | |
3131 | ||
3132 | sprintf (buf, "P%x=", regno); | |
3133 | p = buf + strlen (buf); | |
7302a204 | 3134 | regp = register_buffer (regno); |
5a2468f5 JM |
3135 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) |
3136 | { | |
3137 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
3138 | *p++ = tohex (regp[i] & 0xf); | |
3139 | } | |
3140 | *p = '\0'; | |
c2d11a7d | 3141 | remote_send (buf, PBUFSIZ); |
5a2468f5 JM |
3142 | |
3143 | return buf[0] != '\0'; | |
c906108c SS |
3144 | } |
3145 | ||
5a2468f5 | 3146 | |
c906108c | 3147 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
7302a204 | 3148 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3149 | |
3150 | static void | |
fba45db2 | 3151 | remote_store_registers (int regno) |
c906108c | 3152 | { |
085dd6e6 | 3153 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3154 | int i; |
3155 | char *p; | |
7302a204 | 3156 | char *regs; |
c906108c SS |
3157 | |
3158 | set_thread (inferior_pid, 1); | |
3159 | ||
5a2468f5 | 3160 | if (regno >= 0) |
c906108c | 3161 | { |
5a2468f5 | 3162 | switch (remote_protocol_P.support) |
c906108c | 3163 | { |
5a2468f5 JM |
3164 | case PACKET_DISABLE: |
3165 | break; | |
3166 | case PACKET_ENABLE: | |
3167 | if (store_register_using_P (regno)) | |
3168 | return; | |
3169 | else | |
3170 | error ("Protocol error: P packet not recognized by stub"); | |
3171 | case PACKET_SUPPORT_UNKNOWN: | |
3172 | if (store_register_using_P (regno)) | |
3173 | { | |
3174 | /* The stub recognized the 'P' packet. Remember this. */ | |
3175 | remote_protocol_P.support = PACKET_ENABLE; | |
3176 | return; | |
3177 | } | |
3178 | else | |
3179 | { | |
3180 | /* The stub does not support the 'P' packet. Use 'G' | |
3181 | instead, and don't try using 'P' in the future (it | |
3182 | will just waste our time). */ | |
3183 | remote_protocol_P.support = PACKET_DISABLE; | |
3184 | break; | |
3185 | } | |
c906108c | 3186 | } |
c906108c SS |
3187 | } |
3188 | ||
3189 | buf[0] = 'G'; | |
3190 | ||
3191 | /* Command describes registers byte by byte, | |
3192 | each byte encoded as two hex characters. */ | |
3193 | ||
7302a204 | 3194 | regs = register_buffer (-1); |
c906108c SS |
3195 | p = buf + 1; |
3196 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3197 | for (i = 0; i < register_bytes_found; i++) | |
3198 | { | |
7302a204 ND |
3199 | *p++ = tohex ((regs[i] >> 4) & 0xf); |
3200 | *p++ = tohex (regs[i] & 0xf); | |
c906108c SS |
3201 | } |
3202 | *p = '\0'; | |
3203 | ||
c2d11a7d | 3204 | remote_send (buf, PBUFSIZ); |
c906108c | 3205 | } |
c906108c SS |
3206 | \f |
3207 | ||
3208 | /* Return the number of hex digits in num. */ | |
3209 | ||
3210 | static int | |
fba45db2 | 3211 | hexnumlen (ULONGEST num) |
c906108c SS |
3212 | { |
3213 | int i; | |
3214 | ||
3215 | for (i = 0; num != 0; i++) | |
3216 | num >>= 4; | |
3217 | ||
3218 | return max (i, 1); | |
3219 | } | |
3220 | ||
2df3850c | 3221 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3222 | |
3223 | static int | |
fba45db2 | 3224 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3225 | { |
c906108c | 3226 | int len = hexnumlen (num); |
2df3850c JM |
3227 | return hexnumnstr (buf, num, len); |
3228 | } | |
3229 | ||
c906108c | 3230 | |
2df3850c | 3231 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3232 | |
2df3850c | 3233 | static int |
fba45db2 | 3234 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3235 | { |
3236 | int i; | |
3237 | ||
3238 | buf[width] = '\0'; | |
3239 | ||
3240 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3241 | { |
c5aa993b | 3242 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3243 | num >>= 4; |
3244 | } | |
3245 | ||
2df3850c | 3246 | return width; |
c906108c SS |
3247 | } |
3248 | ||
3249 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3250 | ||
3251 | static CORE_ADDR | |
fba45db2 | 3252 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3253 | { |
3254 | if (remote_address_size > 0 | |
3255 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3256 | { | |
3257 | /* Only create a mask when that mask can safely be constructed | |
3258 | in a ULONGEST variable. */ | |
3259 | ULONGEST mask = 1; | |
3260 | mask = (mask << remote_address_size) - 1; | |
3261 | addr &= mask; | |
3262 | } | |
3263 | return addr; | |
3264 | } | |
3265 | ||
3266 | /* Determine whether the remote target supports binary downloading. | |
3267 | This is accomplished by sending a no-op memory write of zero length | |
3268 | to the target at the specified address. It does not suffice to send | |
3269 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3270 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3271 | ||
96baa820 JM |
3272 | NOTE: This can still lose if the serial line is not eight-bit |
3273 | clean. In cases like this, the user should clear "remote | |
3274 | X-packet". */ | |
3275 | ||
c906108c | 3276 | static void |
fba45db2 | 3277 | check_binary_download (CORE_ADDR addr) |
c906108c | 3278 | { |
96baa820 | 3279 | switch (remote_protocol_binary_download.support) |
c906108c | 3280 | { |
96baa820 JM |
3281 | case PACKET_DISABLE: |
3282 | break; | |
3283 | case PACKET_ENABLE: | |
3284 | break; | |
3285 | case PACKET_SUPPORT_UNKNOWN: | |
3286 | { | |
3287 | char *buf = alloca (PBUFSIZ); | |
3288 | char *p; | |
3289 | ||
3290 | p = buf; | |
3291 | *p++ = 'X'; | |
3292 | p += hexnumstr (p, (ULONGEST) addr); | |
3293 | *p++ = ','; | |
3294 | p += hexnumstr (p, (ULONGEST) 0); | |
3295 | *p++ = ':'; | |
3296 | *p = '\0'; | |
3297 | ||
3298 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3299 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3300 | |
96baa820 JM |
3301 | if (buf[0] == '\0') |
3302 | { | |
3303 | if (remote_debug) | |
3304 | fprintf_unfiltered (gdb_stdlog, | |
3305 | "binary downloading NOT suppported by target\n"); | |
3306 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3307 | } | |
3308 | else | |
3309 | { | |
3310 | if (remote_debug) | |
3311 | fprintf_unfiltered (gdb_stdlog, | |
3312 | "binary downloading suppported by target\n"); | |
3313 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3314 | } | |
3315 | break; | |
3316 | } | |
c906108c SS |
3317 | } |
3318 | } | |
3319 | ||
3320 | /* Write memory data directly to the remote machine. | |
3321 | This does not inform the data cache; the data cache uses this. | |
3322 | MEMADDR is the address in the remote memory space. | |
3323 | MYADDR is the address of the buffer in our space. | |
3324 | LEN is the number of bytes. | |
3325 | ||
917317f4 JM |
3326 | Returns number of bytes transferred, or 0 (setting errno) for |
3327 | error. Only transfer a single packet. */ | |
c906108c SS |
3328 | |
3329 | static int | |
917317f4 | 3330 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3331 | { |
917317f4 | 3332 | unsigned char *buf; |
c906108c | 3333 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3334 | unsigned char *p; |
3335 | unsigned char *plen; | |
c2d11a7d | 3336 | long sizeof_buf; |
917317f4 JM |
3337 | int plenlen; |
3338 | int todo; | |
3339 | int nr_bytes; | |
c906108c SS |
3340 | |
3341 | /* Verify that the target can support a binary download */ | |
3342 | check_binary_download (memaddr); | |
3343 | ||
917317f4 | 3344 | /* Determine the max packet size. */ |
11cf8741 | 3345 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3346 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3347 | buf = alloca (sizeof_buf); | |
c906108c | 3348 | |
7a292a7a | 3349 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3350 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3351 | ||
917317f4 JM |
3352 | /* construct "M"<memaddr>","<len>":" */ |
3353 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3354 | p = buf; | |
3355 | ||
3356 | /* Append [XM]. Compute a best guess of the number of bytes | |
3357 | actually transfered. */ | |
3358 | switch (remote_protocol_binary_download.support) | |
c906108c | 3359 | { |
917317f4 JM |
3360 | case PACKET_ENABLE: |
3361 | *p++ = 'X'; | |
3362 | /* Best guess at number of bytes that will fit. */ | |
3363 | todo = min (len, max_buf_size); | |
3364 | break; | |
3365 | case PACKET_DISABLE: | |
3366 | *p++ = 'M'; | |
3367 | /* num bytes that will fit */ | |
3368 | todo = min (len, max_buf_size / 2); | |
3369 | break; | |
3370 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3371 | internal_error (__FILE__, __LINE__, |
3372 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3373 | default: |
8e65ff28 | 3374 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3375 | } |
3376 | ||
3377 | /* Append <memaddr> */ | |
3378 | memaddr = remote_address_masked (memaddr); | |
3379 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3380 | *p++ = ','; | |
3381 | ||
3382 | /* Append <len>. Retain the location/size of <len>. It may | |
3383 | need to be adjusted once the packet body has been created. */ | |
3384 | plen = p; | |
3385 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3386 | p += plenlen; | |
3387 | *p++ = ':'; | |
3388 | *p = '\0'; | |
3389 | ||
3390 | /* Append the packet body. */ | |
3391 | switch (remote_protocol_binary_download.support) | |
3392 | { | |
3393 | case PACKET_ENABLE: | |
3394 | /* Binary mode. Send target system values byte by byte, in | |
3395 | increasing byte addresses. Only escape certain critical | |
3396 | characters. */ | |
3397 | for (nr_bytes = 0; | |
3398 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3399 | nr_bytes++) | |
c906108c | 3400 | { |
917317f4 JM |
3401 | switch (myaddr[nr_bytes] & 0xff) |
3402 | { | |
3403 | case '$': | |
3404 | case '#': | |
3405 | case 0x7d: | |
3406 | /* These must be escaped */ | |
3407 | *p++ = 0x7d; | |
3408 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3409 | break; | |
3410 | default: | |
3411 | *p++ = myaddr[nr_bytes] & 0xff; | |
3412 | break; | |
3413 | } | |
c906108c | 3414 | } |
917317f4 | 3415 | if (nr_bytes < todo) |
c906108c | 3416 | { |
917317f4 JM |
3417 | /* Escape chars have filled up the buffer prematurely, |
3418 | and we have actually sent fewer bytes than planned. | |
3419 | Fix-up the length field of the packet. Use the same | |
3420 | number of characters as before. */ | |
3421 | ||
3422 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3423 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3424 | } |
917317f4 JM |
3425 | break; |
3426 | case PACKET_DISABLE: | |
3427 | /* Normal mode: Send target system values byte by byte, in | |
3428 | increasing byte addresses. Each byte is encoded as a two hex | |
3429 | value. */ | |
3430 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3431 | { |
917317f4 JM |
3432 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3433 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3434 | } |
917317f4 JM |
3435 | *p = '\0'; |
3436 | break; | |
3437 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3438 | internal_error (__FILE__, __LINE__, |
3439 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3440 | default: |
8e65ff28 | 3441 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3442 | } |
917317f4 JM |
3443 | |
3444 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3445 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3446 | |
3447 | if (buf[0] == 'E') | |
3448 | { | |
3449 | /* There is no correspondance between what the remote protocol | |
3450 | uses for errors and errno codes. We would like a cleaner way | |
3451 | of representing errors (big enough to include errno codes, | |
3452 | bfd_error codes, and others). But for now just return EIO. */ | |
3453 | errno = EIO; | |
3454 | return 0; | |
3455 | } | |
3456 | ||
3457 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3458 | bytes than we'd planned. */ | |
3459 | return nr_bytes; | |
c906108c SS |
3460 | } |
3461 | ||
3462 | /* Read memory data directly from the remote machine. | |
3463 | This does not use the data cache; the data cache uses this. | |
3464 | MEMADDR is the address in the remote memory space. | |
3465 | MYADDR is the address of the buffer in our space. | |
3466 | LEN is the number of bytes. | |
3467 | ||
3468 | Returns number of bytes transferred, or 0 for error. */ | |
3469 | ||
917317f4 JM |
3470 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3471 | remote targets) shouldn't attempt to read the entire buffer. | |
3472 | Instead it should read a single packet worth of data and then | |
3473 | return the byte size of that packet to the caller. The caller (its | |
3474 | caller and its callers caller ;-) already contains code for | |
3475 | handling partial reads. */ | |
3476 | ||
c906108c | 3477 | static int |
fba45db2 | 3478 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3479 | { |
11cf8741 | 3480 | char *buf; |
c906108c | 3481 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3482 | long sizeof_buf; |
c906108c SS |
3483 | int origlen; |
3484 | ||
11cf8741 JM |
3485 | /* Create a buffer big enough for this packet. */ |
3486 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3487 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3488 | buf = alloca (sizeof_buf); | |
c906108c SS |
3489 | |
3490 | origlen = len; | |
3491 | while (len > 0) | |
3492 | { | |
c906108c SS |
3493 | char *p; |
3494 | int todo; | |
3495 | int i; | |
3496 | ||
c5aa993b | 3497 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3498 | |
3499 | /* construct "m"<memaddr>","<len>" */ | |
3500 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3501 | memaddr = remote_address_masked (memaddr); | |
3502 | p = buf; | |
3503 | *p++ = 'm'; | |
3504 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3505 | *p++ = ','; | |
3506 | p += hexnumstr (p, (ULONGEST) todo); | |
3507 | *p = '\0'; | |
3508 | ||
3509 | putpkt (buf); | |
c2d11a7d | 3510 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3511 | |
3512 | if (buf[0] == 'E') | |
3513 | { | |
3514 | /* There is no correspondance between what the remote protocol uses | |
3515 | for errors and errno codes. We would like a cleaner way of | |
3516 | representing errors (big enough to include errno codes, bfd_error | |
3517 | codes, and others). But for now just return EIO. */ | |
3518 | errno = EIO; | |
3519 | return 0; | |
3520 | } | |
3521 | ||
c5aa993b JM |
3522 | /* Reply describes memory byte by byte, |
3523 | each byte encoded as two hex characters. */ | |
c906108c SS |
3524 | |
3525 | p = buf; | |
3526 | for (i = 0; i < todo; i++) | |
3527 | { | |
3528 | if (p[0] == 0 || p[1] == 0) | |
3529 | /* Reply is short. This means that we were able to read | |
3530 | only part of what we wanted to. */ | |
3531 | return i + (origlen - len); | |
3532 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3533 | p += 2; | |
3534 | } | |
3535 | myaddr += todo; | |
3536 | memaddr += todo; | |
3537 | len -= todo; | |
3538 | } | |
3539 | return origlen; | |
3540 | } | |
3541 | \f | |
3542 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3543 | transferring to or from debugger address BUFFER. Write to inferior if |
3544 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3545 | for error. TARGET is unused. */ |
392a587b | 3546 | |
c906108c SS |
3547 | /* ARGSUSED */ |
3548 | static int | |
c338868a | 3549 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3550 | int should_write, |
3551 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3552 | struct target_ops *target) | |
c906108c | 3553 | { |
392a587b JM |
3554 | CORE_ADDR targ_addr; |
3555 | int targ_len; | |
4930751a C |
3556 | int res; |
3557 | ||
392a587b JM |
3558 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3559 | if (targ_len <= 0) | |
c906108c | 3560 | return 0; |
c906108c | 3561 | |
4930751a C |
3562 | if (should_write) |
3563 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3564 | else | |
3565 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3566 | ||
3567 | return res; | |
c906108c SS |
3568 | } |
3569 | ||
c5aa993b | 3570 | |
c906108c SS |
3571 | #if 0 |
3572 | /* Enable after 4.12. */ | |
3573 | ||
3574 | void | |
c338868a KB |
3575 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3576 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3577 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3578 | { |
3579 | if (increment == -4 && len == 4) | |
3580 | { | |
3581 | long mask_long, data_long; | |
3582 | long data_found_long; | |
3583 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3584 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3585 | long returned_long[2]; |
3586 | char *p; | |
3587 | ||
3588 | mask_long = extract_unsigned_integer (mask, len); | |
3589 | data_long = extract_unsigned_integer (data, len); | |
3590 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3591 | putpkt (buf); | |
c2d11a7d | 3592 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3593 | if (buf[0] == '\0') |
3594 | { | |
3595 | /* The stub doesn't support the 't' request. We might want to | |
3596 | remember this fact, but on the other hand the stub could be | |
3597 | switched on us. Maybe we should remember it only until | |
3598 | the next "target remote". */ | |
3599 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3600 | hirange, addr_found, data_found); | |
3601 | return; | |
3602 | } | |
3603 | ||
3604 | if (buf[0] == 'E') | |
3605 | /* There is no correspondance between what the remote protocol uses | |
3606 | for errors and errno codes. We would like a cleaner way of | |
3607 | representing errors (big enough to include errno codes, bfd_error | |
3608 | codes, and others). But for now just use EIO. */ | |
3609 | memory_error (EIO, startaddr); | |
3610 | p = buf; | |
3611 | addr_we_found = 0; | |
3612 | while (*p != '\0' && *p != ',') | |
3613 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3614 | if (*p == '\0') | |
3615 | error ("Protocol error: short return for search"); | |
3616 | ||
3617 | data_found_long = 0; | |
3618 | while (*p != '\0' && *p != ',') | |
3619 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3620 | /* Ignore anything after this comma, for future extensions. */ | |
3621 | ||
3622 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3623 | { | |
3624 | *addr_found = 0; | |
3625 | return; | |
3626 | } | |
3627 | ||
3628 | *addr_found = addr_we_found; | |
3629 | *data_found = store_unsigned_integer (data_we_found, len); | |
3630 | return; | |
3631 | } | |
3632 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3633 | hirange, addr_found, data_found); | |
3634 | } | |
3635 | #endif /* 0 */ | |
3636 | \f | |
3637 | static void | |
fba45db2 | 3638 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3639 | { |
3640 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3641 | } | |
3642 | \f | |
3643 | /* Stuff for dealing with the packets which are part of this protocol. | |
3644 | See comment at top of file for details. */ | |
3645 | ||
3646 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3647 | ||
3648 | static int | |
fba45db2 | 3649 | readchar (int timeout) |
c906108c SS |
3650 | { |
3651 | int ch; | |
3652 | ||
3653 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3654 | ||
2acceee2 JM |
3655 | if (ch >= 0) |
3656 | return (ch & 0x7f); | |
3657 | ||
3658 | switch ((enum serial_rc) ch) | |
c906108c SS |
3659 | { |
3660 | case SERIAL_EOF: | |
2acceee2 | 3661 | target_mourn_inferior (); |
c906108c | 3662 | error ("Remote connection closed"); |
2acceee2 | 3663 | /* no return */ |
c906108c SS |
3664 | case SERIAL_ERROR: |
3665 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3666 | /* no return */ |
c906108c | 3667 | case SERIAL_TIMEOUT: |
2acceee2 | 3668 | break; |
c906108c | 3669 | } |
2acceee2 | 3670 | return ch; |
c906108c SS |
3671 | } |
3672 | ||
3673 | /* Send the command in BUF to the remote machine, and read the reply | |
3674 | into BUF. Report an error if we get an error reply. */ | |
3675 | ||
3676 | static void | |
c2d11a7d JM |
3677 | remote_send (char *buf, |
3678 | long sizeof_buf) | |
c906108c SS |
3679 | { |
3680 | putpkt (buf); | |
c2d11a7d | 3681 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3682 | |
3683 | if (buf[0] == 'E') | |
3684 | error ("Remote failure reply: %s", buf); | |
3685 | } | |
3686 | ||
3687 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3688 | string notation. */ | |
3689 | ||
3690 | static void | |
fba45db2 | 3691 | print_packet (char *buf) |
c906108c SS |
3692 | { |
3693 | puts_filtered ("\""); | |
43e526b9 | 3694 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3695 | puts_filtered ("\""); |
3696 | } | |
3697 | ||
3698 | int | |
fba45db2 | 3699 | putpkt (char *buf) |
c906108c SS |
3700 | { |
3701 | return putpkt_binary (buf, strlen (buf)); | |
3702 | } | |
3703 | ||
3704 | /* Send a packet to the remote machine, with error checking. The data | |
3705 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3706 | to account for the $, # and checksum, and for a possible /0 if we are | |
3707 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3708 | ||
3709 | static int | |
fba45db2 | 3710 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3711 | { |
3712 | int i; | |
3713 | unsigned char csum = 0; | |
11cf8741 | 3714 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3715 | long sizeof_junkbuf = PBUFSIZ; |
3716 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3717 | |
c906108c SS |
3718 | int ch; |
3719 | int tcount = 0; | |
3720 | char *p; | |
3721 | ||
3722 | /* Copy the packet into buffer BUF2, encapsulating it | |
3723 | and giving it a checksum. */ | |
3724 | ||
c906108c SS |
3725 | p = buf2; |
3726 | *p++ = '$'; | |
3727 | ||
3728 | for (i = 0; i < cnt; i++) | |
3729 | { | |
3730 | csum += buf[i]; | |
3731 | *p++ = buf[i]; | |
3732 | } | |
3733 | *p++ = '#'; | |
3734 | *p++ = tohex ((csum >> 4) & 0xf); | |
3735 | *p++ = tohex (csum & 0xf); | |
3736 | ||
3737 | /* Send it over and over until we get a positive ack. */ | |
3738 | ||
3739 | while (1) | |
3740 | { | |
3741 | int started_error_output = 0; | |
3742 | ||
3743 | if (remote_debug) | |
3744 | { | |
3745 | *p = '\0'; | |
43e526b9 JM |
3746 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3747 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3748 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3749 | gdb_flush (gdb_stdlog); |
c906108c SS |
3750 | } |
3751 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3752 | perror_with_name ("putpkt: write failed"); | |
3753 | ||
3754 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3755 | while (1) | |
3756 | { | |
3757 | ch = readchar (remote_timeout); | |
3758 | ||
c5aa993b | 3759 | if (remote_debug) |
c906108c SS |
3760 | { |
3761 | switch (ch) | |
3762 | { | |
3763 | case '+': | |
1216fa2c | 3764 | case '-': |
c906108c SS |
3765 | case SERIAL_TIMEOUT: |
3766 | case '$': | |
3767 | if (started_error_output) | |
3768 | { | |
3769 | putchar_unfiltered ('\n'); | |
3770 | started_error_output = 0; | |
3771 | } | |
3772 | } | |
3773 | } | |
3774 | ||
3775 | switch (ch) | |
3776 | { | |
3777 | case '+': | |
3778 | if (remote_debug) | |
0f71a2f6 | 3779 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3780 | return 1; |
1216fa2c AC |
3781 | case '-': |
3782 | if (remote_debug) | |
3783 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3784 | case SERIAL_TIMEOUT: |
c5aa993b | 3785 | tcount++; |
c906108c SS |
3786 | if (tcount > 3) |
3787 | return 0; | |
3788 | break; /* Retransmit buffer */ | |
3789 | case '$': | |
3790 | { | |
40e3f985 FN |
3791 | if (remote_debug) |
3792 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3793 | /* It's probably an old response, and we're out of sync. |
3794 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3795 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3796 | continue; /* Now, go look for + */ |
c906108c SS |
3797 | } |
3798 | default: | |
3799 | if (remote_debug) | |
3800 | { | |
3801 | if (!started_error_output) | |
3802 | { | |
3803 | started_error_output = 1; | |
0f71a2f6 | 3804 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3805 | } |
0f71a2f6 | 3806 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3807 | } |
3808 | continue; | |
3809 | } | |
3810 | break; /* Here to retransmit */ | |
3811 | } | |
3812 | ||
3813 | #if 0 | |
3814 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3815 | able to get out next time we call QUIT, without anything as |
3816 | violent as interrupt_query. If we want to provide a way out of | |
3817 | here without getting to the next QUIT, it should be based on | |
3818 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3819 | if (quit_flag) |
3820 | { | |
3821 | quit_flag = 0; | |
3822 | interrupt_query (); | |
3823 | } | |
3824 | #endif | |
3825 | } | |
3826 | } | |
3827 | ||
0f71a2f6 JM |
3828 | static int remote_cisco_mode; |
3829 | ||
c906108c SS |
3830 | /* Come here after finding the start of the frame. Collect the rest |
3831 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3832 | compression. No more than sizeof_buf-1 characters are read so that |
3833 | the buffer can be NUL terminated. | |
c906108c | 3834 | |
c2d11a7d JM |
3835 | Returns -1 on error, number of characters in buffer (ignoring the |
3836 | trailing NULL) on success. (could be extended to return one of the | |
3837 | SERIAL status indications). */ | |
3838 | ||
3839 | static long | |
3840 | read_frame (char *buf, | |
3841 | long sizeof_buf) | |
c906108c SS |
3842 | { |
3843 | unsigned char csum; | |
c2d11a7d | 3844 | long bc; |
c906108c SS |
3845 | int c; |
3846 | ||
3847 | csum = 0; | |
c2d11a7d | 3848 | bc = 0; |
c906108c SS |
3849 | |
3850 | while (1) | |
3851 | { | |
c2d11a7d | 3852 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 3853 | c = readchar (remote_timeout); |
c906108c SS |
3854 | switch (c) |
3855 | { | |
3856 | case SERIAL_TIMEOUT: | |
3857 | if (remote_debug) | |
0f71a2f6 | 3858 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3859 | return -1; |
c906108c SS |
3860 | case '$': |
3861 | if (remote_debug) | |
0f71a2f6 JM |
3862 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3863 | gdb_stdlog); | |
c2d11a7d | 3864 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
3865 | case '#': |
3866 | { | |
3867 | unsigned char pktcsum; | |
e1b09194 AC |
3868 | int check_0 = 0; |
3869 | int check_1 = 0; | |
c906108c | 3870 | |
c2d11a7d | 3871 | buf[bc] = '\0'; |
c906108c | 3872 | |
e1b09194 AC |
3873 | check_0 = readchar (remote_timeout); |
3874 | if (check_0 >= 0) | |
3875 | check_1 = readchar (remote_timeout); | |
3876 | ||
3877 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
3878 | { | |
3879 | if (remote_debug) | |
3880 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
3881 | return -1; | |
3882 | } | |
3883 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3884 | { |
3885 | if (remote_debug) | |
3886 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
3887 | return -1; | |
3888 | } | |
c906108c | 3889 | |
e1b09194 | 3890 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 3891 | if (csum == pktcsum) |
c2d11a7d | 3892 | return bc; |
c906108c | 3893 | |
c5aa993b | 3894 | if (remote_debug) |
c906108c | 3895 | { |
0f71a2f6 | 3896 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3897 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3898 | pktcsum, csum); |
3899 | fputs_filtered (buf, gdb_stdlog); | |
3900 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3901 | } |
c2d11a7d JM |
3902 | /* Number of characters in buffer ignoring trailing |
3903 | NUL. */ | |
3904 | return -1; | |
c906108c SS |
3905 | } |
3906 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
3907 | { |
3908 | int repeat; | |
3909 | csum += c; | |
c906108c | 3910 | |
c2c6d25f JM |
3911 | if (remote_cisco_mode == 0) |
3912 | { | |
3913 | c = readchar (remote_timeout); | |
3914 | csum += c; | |
3915 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
3916 | } | |
3917 | else | |
3918 | { | |
3919 | /* Cisco's run-length encoding variant uses two | |
3920 | hex chars to represent the repeat count. */ | |
3921 | ||
3922 | c = readchar (remote_timeout); | |
3923 | csum += c; | |
3924 | repeat = fromhex (c) << 4; | |
3925 | c = readchar (remote_timeout); | |
3926 | csum += c; | |
3927 | repeat += fromhex (c); | |
3928 | } | |
c906108c | 3929 | |
c2d11a7d JM |
3930 | /* The character before ``*'' is repeated. */ |
3931 | ||
c2c6d25f | 3932 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
3933 | && bc > 0 |
3934 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 3935 | { |
c2d11a7d JM |
3936 | memset (&buf[bc], buf[bc - 1], repeat); |
3937 | bc += repeat; | |
c2c6d25f JM |
3938 | continue; |
3939 | } | |
3940 | ||
c2d11a7d | 3941 | buf[bc] = '\0'; |
c2c6d25f JM |
3942 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
3943 | puts_filtered (buf); | |
3944 | puts_filtered ("\n"); | |
c2d11a7d | 3945 | return -1; |
c2c6d25f | 3946 | } |
c906108c | 3947 | default: |
c2d11a7d | 3948 | if (bc < sizeof_buf - 1) |
c906108c | 3949 | { |
c2d11a7d | 3950 | buf[bc++] = c; |
c906108c SS |
3951 | csum += c; |
3952 | continue; | |
3953 | } | |
3954 | ||
c2d11a7d | 3955 | buf[bc] = '\0'; |
c906108c SS |
3956 | puts_filtered ("Remote packet too long: "); |
3957 | puts_filtered (buf); | |
3958 | puts_filtered ("\n"); | |
3959 | ||
c2d11a7d | 3960 | return -1; |
c906108c SS |
3961 | } |
3962 | } | |
3963 | } | |
3964 | ||
3965 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
3966 | store it in BUF. If FOREVER, wait forever rather than timing out; |
3967 | this is used (in synchronous mode) to wait for a target that is is | |
3968 | executing user code to stop. */ | |
d9fcf2fb JM |
3969 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
3970 | don't have to change all the calls to getpkt to deal with the | |
3971 | return value, because at the moment I don't know what the right | |
3972 | thing to do it for those. */ | |
c906108c | 3973 | void |
c2d11a7d JM |
3974 | getpkt (char *buf, |
3975 | long sizeof_buf, | |
3976 | int forever) | |
d9fcf2fb JM |
3977 | { |
3978 | int timed_out; | |
3979 | ||
3980 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
3981 | } | |
3982 | ||
3983 | ||
3984 | /* Read a packet from the remote machine, with error checking, and | |
3985 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
3986 | this is used (in synchronous mode) to wait for a target that is is | |
3987 | executing user code to stop. If FOREVER == 0, this function is | |
3988 | allowed to time out gracefully and return an indication of this to | |
3989 | the caller. */ | |
3990 | int | |
3991 | getpkt_sane (char *buf, | |
3992 | long sizeof_buf, | |
3993 | int forever) | |
c906108c SS |
3994 | { |
3995 | int c; | |
3996 | int tries; | |
3997 | int timeout; | |
3998 | int val; | |
3999 | ||
c5aa993b | 4000 | strcpy (buf, "timeout"); |
c906108c SS |
4001 | |
4002 | if (forever) | |
4003 | { | |
c906108c | 4004 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4005 | } |
4006 | ||
4007 | else | |
4008 | timeout = remote_timeout; | |
4009 | ||
4010 | #define MAX_TRIES 3 | |
4011 | ||
4012 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4013 | { | |
4014 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4015 | continuously, but if it pauses, we'll get a zero from readchar |
4016 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4017 | |
4018 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4019 | After that, we expect characters to arrive at a brisk pace. They |
4020 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4021 | |
4022 | do | |
4023 | { | |
4024 | c = readchar (timeout); | |
4025 | ||
4026 | if (c == SERIAL_TIMEOUT) | |
4027 | { | |
2acceee2 | 4028 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4029 | { |
2acceee2 | 4030 | QUIT; |
c906108c SS |
4031 | target_mourn_inferior (); |
4032 | error ("Watchdog has expired. Target detached.\n"); | |
4033 | } | |
c906108c | 4034 | if (remote_debug) |
0f71a2f6 | 4035 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4036 | goto retry; |
4037 | } | |
4038 | } | |
4039 | while (c != '$'); | |
4040 | ||
4041 | /* We've found the start of a packet, now collect the data. */ | |
4042 | ||
c2d11a7d | 4043 | val = read_frame (buf, sizeof_buf); |
c906108c | 4044 | |
c2d11a7d | 4045 | if (val >= 0) |
c906108c SS |
4046 | { |
4047 | if (remote_debug) | |
43e526b9 JM |
4048 | { |
4049 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4050 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4051 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4052 | } | |
c906108c | 4053 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 4054 | return 0; |
c906108c SS |
4055 | } |
4056 | ||
4057 | /* Try the whole thing again. */ | |
4058 | retry: | |
4059 | SERIAL_WRITE (remote_desc, "-", 1); | |
4060 | } | |
4061 | ||
4062 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4063 | ||
4064 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4065 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4066 | return 1; |
c906108c SS |
4067 | } |
4068 | \f | |
4069 | static void | |
fba45db2 | 4070 | remote_kill (void) |
c906108c SS |
4071 | { |
4072 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4073 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4074 | if (kill_kludge) | |
4075 | { | |
4076 | kill_kludge = 0; | |
4077 | target_mourn_inferior (); | |
4078 | return; | |
4079 | } | |
4080 | ||
4081 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4082 | speaking terms with the remote system. */ | |
c5aa993b | 4083 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4084 | |
4085 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4086 | we do or not. For the existing stubs, kill is a noop. */ | |
4087 | target_mourn_inferior (); | |
4088 | } | |
4089 | ||
43ff13b4 JM |
4090 | /* Async version of remote_kill. */ |
4091 | static void | |
fba45db2 | 4092 | remote_async_kill (void) |
43ff13b4 JM |
4093 | { |
4094 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4095 | if (target_is_async_p ()) |
c2c6d25f | 4096 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4097 | |
4098 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4099 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4100 | if (kill_kludge) | |
4101 | { | |
4102 | kill_kludge = 0; | |
4103 | target_mourn_inferior (); | |
4104 | return; | |
4105 | } | |
4106 | ||
4107 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4108 | speaking terms with the remote system. */ | |
c5aa993b | 4109 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4110 | |
4111 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4112 | we do or not. For the existing stubs, kill is a noop. */ | |
4113 | target_mourn_inferior (); | |
4114 | } | |
4115 | ||
c906108c | 4116 | static void |
fba45db2 | 4117 | remote_mourn (void) |
c906108c SS |
4118 | { |
4119 | remote_mourn_1 (&remote_ops); | |
4120 | } | |
4121 | ||
53a5351d | 4122 | static void |
fba45db2 | 4123 | remote_async_mourn (void) |
53a5351d JM |
4124 | { |
4125 | remote_mourn_1 (&remote_async_ops); | |
4126 | } | |
4127 | ||
c906108c | 4128 | static void |
fba45db2 | 4129 | extended_remote_mourn (void) |
c906108c SS |
4130 | { |
4131 | /* We do _not_ want to mourn the target like this; this will | |
4132 | remove the extended remote target from the target stack, | |
4133 | and the next time the user says "run" it'll fail. | |
4134 | ||
4135 | FIXME: What is the right thing to do here? */ | |
4136 | #if 0 | |
4137 | remote_mourn_1 (&extended_remote_ops); | |
4138 | #endif | |
4139 | } | |
4140 | ||
4141 | /* Worker function for remote_mourn. */ | |
4142 | static void | |
fba45db2 | 4143 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4144 | { |
4145 | unpush_target (target); | |
4146 | generic_mourn_inferior (); | |
4147 | } | |
4148 | ||
4149 | /* In the extended protocol we want to be able to do things like | |
4150 | "run" and have them basically work as expected. So we need | |
4151 | a special create_inferior function. | |
4152 | ||
4153 | FIXME: One day add support for changing the exec file | |
4154 | we're debugging, arguments and an environment. */ | |
4155 | ||
4156 | static void | |
fba45db2 | 4157 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4158 | { |
4159 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4160 | the remote server. */ | |
4161 | remove_breakpoints (); | |
4162 | ||
4163 | /* Now restart the remote server. */ | |
4164 | extended_remote_restart (); | |
4165 | ||
4166 | /* Now put the breakpoints back in. This way we're safe if the | |
4167 | restart function works via a unix fork on the remote side. */ | |
4168 | insert_breakpoints (); | |
4169 | ||
4170 | /* Clean up from the last time we were running. */ | |
4171 | clear_proceed_status (); | |
4172 | ||
4173 | /* Let the remote process run. */ | |
4174 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4175 | } | |
4176 | ||
43ff13b4 JM |
4177 | /* Async version of extended_remote_create_inferior. */ |
4178 | static void | |
fba45db2 | 4179 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4180 | { |
4181 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4182 | the remote server. */ | |
4183 | remove_breakpoints (); | |
4184 | ||
4185 | /* If running asynchronously, register the target file descriptor | |
4186 | with the event loop. */ | |
2acceee2 JM |
4187 | if (event_loop_p && target_can_async_p ()) |
4188 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4189 | |
4190 | /* Now restart the remote server. */ | |
4191 | extended_remote_restart (); | |
4192 | ||
4193 | /* Now put the breakpoints back in. This way we're safe if the | |
4194 | restart function works via a unix fork on the remote side. */ | |
4195 | insert_breakpoints (); | |
4196 | ||
4197 | /* Clean up from the last time we were running. */ | |
4198 | clear_proceed_status (); | |
4199 | ||
4200 | /* Let the remote process run. */ | |
4201 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4202 | } | |
c906108c | 4203 | \f |
c5aa993b | 4204 | |
c906108c SS |
4205 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4206 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4207 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4208 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4209 | the standard routines that are in mem-break.c. */ | |
4210 | ||
4211 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4212 | the choice of breakpoint instruction affects target program design and | |
4213 | vice versa, and by making it user-tweakable, the special code here | |
4214 | goes away and we need fewer special GDB configurations. */ | |
4215 | ||
4216 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4217 | #define REMOTE_BREAKPOINT | |
4218 | #endif | |
4219 | ||
4220 | #ifdef REMOTE_BREAKPOINT | |
4221 | ||
4222 | /* If the target isn't bi-endian, just pretend it is. */ | |
4223 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4224 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4225 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4226 | #endif | |
4227 | ||
4228 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4229 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4230 | ||
4231 | #endif /* REMOTE_BREAKPOINT */ | |
4232 | ||
4233 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4234 | support. We read the contents of the target location and stash it, | |
4235 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4236 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4237 | memory allocated for saving the target contents. It is guaranteed | |
4238 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4239 | is accomplished via BREAKPOINT_MAX). */ | |
4240 | ||
4241 | static int | |
fba45db2 | 4242 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
4243 | { |
4244 | #ifdef REMOTE_BREAKPOINT | |
4245 | int val; | |
96baa820 JM |
4246 | #endif |
4247 | int bp_size; | |
4248 | ||
d471ea57 AC |
4249 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4250 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4251 | fails, and the user has explicitly requested the Z support then | |
4252 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4253 | |
d471ea57 | 4254 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4255 | { |
e514a9d6 JM |
4256 | char *buf = alloca (PBUFSIZ); |
4257 | char *p = buf; | |
96baa820 JM |
4258 | |
4259 | addr = remote_address_masked (addr); | |
4260 | *(p++) = 'Z'; | |
4261 | *(p++) = '0'; | |
4262 | *(p++) = ','; | |
4263 | p += hexnumstr (p, (ULONGEST) addr); | |
4264 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4265 | sprintf (p, ",%d", bp_size); | |
4266 | ||
4267 | putpkt (buf); | |
c2d11a7d | 4268 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4269 | |
d471ea57 | 4270 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4271 | { |
d471ea57 AC |
4272 | case PACKET_ERROR: |
4273 | return -1; | |
4274 | case PACKET_OK: | |
4275 | return 0; | |
4276 | case PACKET_UNKNOWN: | |
4277 | break; | |
96baa820 JM |
4278 | } |
4279 | } | |
c906108c | 4280 | |
96baa820 | 4281 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4282 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4283 | ||
4284 | if (val == 0) | |
4285 | { | |
4286 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4287 | val = target_write_memory (addr, (char *) big_break_insn, | |
4288 | sizeof big_break_insn); | |
4289 | else | |
4290 | val = target_write_memory (addr, (char *) little_break_insn, | |
4291 | sizeof little_break_insn); | |
4292 | } | |
4293 | ||
4294 | return val; | |
4295 | #else | |
4296 | return memory_insert_breakpoint (addr, contents_cache); | |
4297 | #endif /* REMOTE_BREAKPOINT */ | |
4298 | } | |
4299 | ||
4300 | static int | |
fba45db2 | 4301 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4302 | { |
96baa820 JM |
4303 | int bp_size; |
4304 | ||
d471ea57 | 4305 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4306 | { |
e514a9d6 JM |
4307 | char *buf = alloca (PBUFSIZ); |
4308 | char *p = buf; | |
96baa820 JM |
4309 | |
4310 | *(p++) = 'z'; | |
4311 | *(p++) = '0'; | |
4312 | *(p++) = ','; | |
4313 | ||
4314 | addr = remote_address_masked (addr); | |
4315 | p += hexnumstr (p, (ULONGEST) addr); | |
4316 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4317 | sprintf (p, ",%d", bp_size); | |
4318 | ||
4319 | putpkt (buf); | |
c2d11a7d | 4320 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4321 | |
4322 | return (buf[0] == 'E'); | |
4323 | } | |
4324 | ||
c906108c SS |
4325 | #ifdef REMOTE_BREAKPOINT |
4326 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4327 | #else | |
4328 | return memory_remove_breakpoint (addr, contents_cache); | |
4329 | #endif /* REMOTE_BREAKPOINT */ | |
4330 | } | |
4331 | ||
d471ea57 AC |
4332 | static int |
4333 | watchpoint_to_Z_packet (int type) | |
4334 | { | |
4335 | switch (type) | |
4336 | { | |
4337 | case hw_write: | |
4338 | return 2; | |
4339 | break; | |
4340 | case hw_read: | |
4341 | return 3; | |
4342 | break; | |
4343 | case hw_access: | |
4344 | return 4; | |
4345 | break; | |
4346 | default: | |
8e65ff28 AC |
4347 | internal_error (__FILE__, __LINE__, |
4348 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4349 | } |
4350 | } | |
4351 | ||
4352 | /* FIXME: This function should be static and a member of the remote | |
4353 | target vector. */ | |
4354 | ||
96baa820 | 4355 | int |
fba45db2 | 4356 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4357 | { |
e514a9d6 JM |
4358 | char *buf = alloca (PBUFSIZ); |
4359 | char *p; | |
d471ea57 | 4360 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4361 | |
d471ea57 AC |
4362 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4363 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4364 | remote_protocol_Z[packet].name, | |
4365 | remote_protocol_Z[packet].title); | |
96baa820 | 4366 | |
d471ea57 | 4367 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4368 | p = strchr (buf, '\0'); |
4369 | addr = remote_address_masked (addr); | |
4370 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4371 | sprintf (p, ",%x", len); |
96baa820 JM |
4372 | |
4373 | putpkt (buf); | |
c2d11a7d | 4374 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4375 | |
d471ea57 AC |
4376 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4377 | { | |
4378 | case PACKET_ERROR: | |
4379 | case PACKET_UNKNOWN: | |
4380 | return -1; | |
4381 | case PACKET_OK: | |
4382 | return 0; | |
4383 | } | |
8e65ff28 AC |
4384 | internal_error (__FILE__, __LINE__, |
4385 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4386 | } |
4387 | ||
d471ea57 AC |
4388 | /* FIXME: This function should be static and a member of the remote |
4389 | target vector. */ | |
4390 | ||
96baa820 | 4391 | int |
fba45db2 | 4392 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4393 | { |
e514a9d6 JM |
4394 | char *buf = alloca (PBUFSIZ); |
4395 | char *p; | |
d471ea57 AC |
4396 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4397 | ||
4398 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4399 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4400 | remote_protocol_Z[packet].name, | |
4401 | remote_protocol_Z[packet].title); | |
96baa820 | 4402 | |
d471ea57 | 4403 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4404 | p = strchr (buf, '\0'); |
4405 | addr = remote_address_masked (addr); | |
4406 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4407 | sprintf (p, ",%x", len); |
96baa820 | 4408 | putpkt (buf); |
c2d11a7d | 4409 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4410 | |
d471ea57 AC |
4411 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4412 | { | |
4413 | case PACKET_ERROR: | |
4414 | case PACKET_UNKNOWN: | |
4415 | return -1; | |
4416 | case PACKET_OK: | |
4417 | return 0; | |
4418 | } | |
8e65ff28 AC |
4419 | internal_error (__FILE__, __LINE__, |
4420 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4421 | } |
4422 | ||
d471ea57 AC |
4423 | /* FIXME: This function should be static and a member of the remote |
4424 | target vector. */ | |
4425 | ||
96baa820 | 4426 | int |
fba45db2 | 4427 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4428 | { |
e514a9d6 JM |
4429 | char *buf = alloca (PBUFSIZ); |
4430 | char *p = buf; | |
96baa820 | 4431 | |
d471ea57 AC |
4432 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4433 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4434 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4435 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4436 | ||
96baa820 JM |
4437 | *(p++) = 'Z'; |
4438 | *(p++) = '1'; | |
4439 | *(p++) = ','; | |
4440 | ||
4441 | addr = remote_address_masked (addr); | |
4442 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4443 | sprintf (p, ",%x", len); |
96baa820 JM |
4444 | |
4445 | putpkt (buf); | |
c2d11a7d | 4446 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4447 | |
d471ea57 AC |
4448 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4449 | { | |
4450 | case PACKET_ERROR: | |
4451 | case PACKET_UNKNOWN: | |
4452 | return -1; | |
4453 | case PACKET_OK: | |
4454 | return 0; | |
4455 | } | |
8e65ff28 AC |
4456 | internal_error (__FILE__, __LINE__, |
4457 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4458 | } |
4459 | ||
d471ea57 AC |
4460 | /* FIXME: This function should be static and a member of the remote |
4461 | target vector. */ | |
4462 | ||
96baa820 | 4463 | int |
fba45db2 | 4464 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4465 | { |
e514a9d6 JM |
4466 | char *buf = alloca (PBUFSIZ); |
4467 | char *p = buf; | |
96baa820 | 4468 | |
d471ea57 AC |
4469 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4470 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4471 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4472 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4473 | ||
96baa820 JM |
4474 | *(p++) = 'z'; |
4475 | *(p++) = '1'; | |
4476 | *(p++) = ','; | |
4477 | ||
4478 | addr = remote_address_masked (addr); | |
4479 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4480 | sprintf (p, ",%x", len); |
96baa820 JM |
4481 | |
4482 | putpkt(buf); | |
c2d11a7d | 4483 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4484 | |
d471ea57 AC |
4485 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4486 | { | |
4487 | case PACKET_ERROR: | |
4488 | case PACKET_UNKNOWN: | |
4489 | return -1; | |
4490 | case PACKET_OK: | |
4491 | return 0; | |
4492 | } | |
8e65ff28 AC |
4493 | internal_error (__FILE__, __LINE__, |
4494 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4495 | } |
96baa820 | 4496 | |
c906108c SS |
4497 | /* Some targets are only capable of doing downloads, and afterwards |
4498 | they switch to the remote serial protocol. This function provides | |
4499 | a clean way to get from the download target to the remote target. | |
4500 | It's basically just a wrapper so that we don't have to expose any | |
4501 | of the internal workings of remote.c. | |
4502 | ||
4503 | Prior to calling this routine, you should shutdown the current | |
4504 | target code, else you will get the "A program is being debugged | |
4505 | already..." message. Usually a call to pop_target() suffices. */ | |
4506 | ||
4507 | void | |
fba45db2 | 4508 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4509 | { |
4510 | printf_filtered ("Switching to remote protocol\n"); | |
4511 | remote_open (name, from_tty); | |
4512 | } | |
4513 | ||
4514 | /* Other targets want to use the entire remote serial module but with | |
4515 | certain remote_ops overridden. */ | |
4516 | ||
4517 | void | |
fba45db2 KB |
4518 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4519 | int extended_p) | |
c906108c SS |
4520 | { |
4521 | printf_filtered ("Selecting the %sremote protocol\n", | |
4522 | (extended_p ? "extended-" : "")); | |
4523 | remote_open_1 (name, from_tty, target, extended_p); | |
4524 | } | |
4525 | ||
4526 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4527 | ||
c5aa993b JM |
4528 | static unsigned long crc32_table[256] = |
4529 | {0, 0}; | |
c906108c SS |
4530 | |
4531 | static unsigned long | |
fba45db2 | 4532 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4533 | { |
c5aa993b | 4534 | if (!crc32_table[1]) |
c906108c SS |
4535 | { |
4536 | /* Initialize the CRC table and the decoding table. */ | |
4537 | int i, j; | |
4538 | unsigned int c; | |
4539 | ||
4540 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4541 | { |
4542 | for (c = i << 24, j = 8; j > 0; --j) | |
4543 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4544 | crc32_table[i] = c; | |
4545 | } | |
c906108c SS |
4546 | } |
4547 | ||
4548 | while (len--) | |
4549 | { | |
4550 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4551 | buf++; | |
4552 | } | |
4553 | return crc; | |
4554 | } | |
4555 | ||
4556 | /* compare-sections command | |
4557 | ||
4558 | With no arguments, compares each loadable section in the exec bfd | |
4559 | with the same memory range on the target, and reports mismatches. | |
4560 | Useful for verifying the image on the target against the exec file. | |
4561 | Depends on the target understanding the new "qCRC:" request. */ | |
4562 | ||
e514a9d6 JM |
4563 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4564 | target method (target verify memory) and generic version of the | |
4565 | actual command. This will allow other high-level code (especially | |
4566 | generic_load()) to make use of this target functionality. */ | |
4567 | ||
c906108c | 4568 | static void |
fba45db2 | 4569 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
4570 | { |
4571 | asection *s; | |
4572 | unsigned long host_crc, target_crc; | |
4573 | extern bfd *exec_bfd; | |
4574 | struct cleanup *old_chain; | |
085dd6e6 JM |
4575 | char *tmp; |
4576 | char *sectdata; | |
4577 | char *sectname; | |
4578 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4579 | bfd_size_type size; |
4580 | bfd_vma lma; | |
4581 | int matched = 0; | |
4582 | int mismatched = 0; | |
4583 | ||
4584 | if (!exec_bfd) | |
4585 | error ("command cannot be used without an exec file"); | |
4586 | if (!current_target.to_shortname || | |
4587 | strcmp (current_target.to_shortname, "remote") != 0) | |
4588 | error ("command can only be used with remote target"); | |
4589 | ||
c5aa993b | 4590 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4591 | { |
4592 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4593 | continue; /* skip non-loadable section */ |
c906108c SS |
4594 | |
4595 | size = bfd_get_section_size_before_reloc (s); | |
4596 | if (size == 0) | |
c5aa993b | 4597 | continue; /* skip zero-length section */ |
c906108c SS |
4598 | |
4599 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4600 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4601 | continue; /* not the section selected by user */ |
c906108c | 4602 | |
c5aa993b | 4603 | matched = 1; /* do this section */ |
c906108c SS |
4604 | lma = s->lma; |
4605 | /* FIXME: assumes lma can fit into long */ | |
4606 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4607 | putpkt (buf); | |
4608 | ||
4609 | /* be clever; compute the host_crc before waiting for target reply */ | |
4610 | sectdata = xmalloc (size); | |
b8c9b27d | 4611 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4612 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4613 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4614 | ||
c2d11a7d | 4615 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4616 | if (buf[0] == 'E') |
4617 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4618 | sectname, lma, lma + size); | |
4619 | if (buf[0] != 'C') | |
4620 | error ("remote target does not support this operation"); | |
4621 | ||
4622 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4623 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4624 | ||
d4f3574e SS |
4625 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4626 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4627 | if (host_crc == target_crc) |
4628 | printf_filtered ("matched.\n"); | |
4629 | else | |
c5aa993b JM |
4630 | { |
4631 | printf_filtered ("MIS-MATCHED!\n"); | |
4632 | mismatched++; | |
4633 | } | |
c906108c SS |
4634 | |
4635 | do_cleanups (old_chain); | |
4636 | } | |
4637 | if (mismatched > 0) | |
4638 | warning ("One or more sections of the remote executable does not match\n\ | |
4639 | the loaded file\n"); | |
4640 | if (args && !matched) | |
4641 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4642 | } | |
4643 | ||
4644 | static int | |
fba45db2 | 4645 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c SS |
4646 | { |
4647 | int i; | |
085dd6e6 | 4648 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4649 | char *p2 = &buf2[0]; |
c906108c | 4650 | |
c5aa993b | 4651 | if (!bufsiz) |
c906108c SS |
4652 | error ("null pointer to remote bufer size specified"); |
4653 | ||
cce74817 | 4654 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4655 | the caller know and return what the minimum size is */ |
4656 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4657 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4658 | { |
4659 | *bufsiz = PBUFSIZ; | |
4660 | return -1; | |
4661 | } | |
4662 | ||
4663 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4664 | if (!remote_desc) |
c906108c SS |
4665 | error ("remote query is only available after target open"); |
4666 | ||
4667 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4668 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4669 | error ("invalid remote query type"); |
4670 | ||
c5aa993b | 4671 | if (!buf) |
c906108c SS |
4672 | error ("null remote query specified"); |
4673 | ||
c5aa993b | 4674 | if (!outbuf) |
c906108c SS |
4675 | error ("remote query requires a buffer to receive data"); |
4676 | ||
4677 | outbuf[0] = '\0'; | |
4678 | ||
4679 | *p2++ = 'q'; | |
4680 | *p2++ = query_type; | |
4681 | ||
4682 | /* we used one buffer char for the remote protocol q command and another | |
4683 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4684 | plus one extra in case we are debugging (remote_debug), | |
4685 | we have PBUFZIZ - 7 left to pack the query string */ | |
4686 | i = 0; | |
c5aa993b | 4687 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4688 | { |
4689 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4690 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4691 | error ("illegal characters in query string"); | |
c906108c SS |
4692 | |
4693 | *p2++ = buf[i]; | |
4694 | i++; | |
4695 | } | |
4696 | *p2 = buf[i]; | |
4697 | ||
c5aa993b | 4698 | if (buf[i]) |
c906108c SS |
4699 | error ("query larger than available buffer"); |
4700 | ||
4701 | i = putpkt (buf2); | |
c5aa993b JM |
4702 | if (i < 0) |
4703 | return i; | |
c906108c | 4704 | |
c2d11a7d | 4705 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4706 | |
4707 | return 0; | |
4708 | } | |
4709 | ||
96baa820 JM |
4710 | static void |
4711 | remote_rcmd (char *command, | |
d9fcf2fb | 4712 | struct ui_file *outbuf) |
96baa820 JM |
4713 | { |
4714 | int i; | |
4715 | char *buf = alloca (PBUFSIZ); | |
4716 | char *p = buf; | |
4717 | ||
4718 | if (!remote_desc) | |
4719 | error ("remote rcmd is only available after target open"); | |
4720 | ||
7be570e7 JM |
4721 | /* Send a NULL command across as an empty command */ |
4722 | if (command == NULL) | |
4723 | command = ""; | |
4724 | ||
96baa820 JM |
4725 | /* The query prefix */ |
4726 | strcpy (buf, "qRcmd,"); | |
4727 | p = strchr (buf, '\0'); | |
4728 | ||
4729 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4730 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4731 | ||
4732 | /* Encode the actual command */ | |
4733 | for (i = 0; command[i]; i++) | |
4734 | { | |
4735 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4736 | *p++ = tohex (command[i] & 0xf); | |
4737 | } | |
4738 | *p = '\0'; | |
4739 | ||
4740 | if (putpkt (buf) < 0) | |
4741 | error ("Communication problem with target\n"); | |
4742 | ||
4743 | /* get/display the response */ | |
4744 | while (1) | |
4745 | { | |
4746 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4747 | buf[0] = '\0'; | |
c2d11a7d | 4748 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4749 | if (buf[0] == '\0') |
4750 | error ("Target does not support this command\n"); | |
4751 | if (buf[0] == 'O' && buf[1] != 'K') | |
4752 | { | |
4753 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4754 | continue; | |
4755 | } | |
4756 | if (strcmp (buf, "OK") == 0) | |
4757 | break; | |
7be570e7 JM |
4758 | if (strlen (buf) == 3 && buf[0] == 'E' |
4759 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4760 | { | |
4761 | error ("Protocol error with Rcmd"); | |
4762 | } | |
96baa820 JM |
4763 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4764 | { | |
4765 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4766 | fputc_unfiltered (c, outbuf); | |
4767 | } | |
4768 | break; | |
4769 | } | |
4770 | } | |
4771 | ||
c906108c | 4772 | static void |
fba45db2 | 4773 | packet_command (char *args, int from_tty) |
c906108c | 4774 | { |
085dd6e6 | 4775 | char *buf = alloca (PBUFSIZ); |
c906108c | 4776 | |
c5aa993b | 4777 | if (!remote_desc) |
c906108c SS |
4778 | error ("command can only be used with remote target"); |
4779 | ||
c5aa993b | 4780 | if (!args) |
c906108c SS |
4781 | error ("remote-packet command requires packet text as argument"); |
4782 | ||
4783 | puts_filtered ("sending: "); | |
4784 | print_packet (args); | |
4785 | puts_filtered ("\n"); | |
4786 | putpkt (args); | |
4787 | ||
c2d11a7d | 4788 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4789 | puts_filtered ("received: "); |
4790 | print_packet (buf); | |
4791 | puts_filtered ("\n"); | |
4792 | } | |
4793 | ||
4794 | #if 0 | |
4795 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4796 | ||
a14ed312 | 4797 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4798 | |
a14ed312 | 4799 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4800 | |
a14ed312 | 4801 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4802 | |
a14ed312 | 4803 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4804 | |
a14ed312 | 4805 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4806 | |
a14ed312 | 4807 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4808 | |
a14ed312 | 4809 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 4810 | |
a14ed312 | 4811 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4812 | |
a14ed312 | 4813 | static void init_remote_threadtests (void); |
c906108c | 4814 | |
c5aa993b | 4815 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4816 | |
4817 | static void | |
fba45db2 | 4818 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
4819 | { |
4820 | int sample_thread = SAMPLE_THREAD; | |
4821 | ||
4822 | printf_filtered ("Remote threadset test\n"); | |
4823 | set_thread (sample_thread, 1); | |
4824 | } | |
4825 | ||
4826 | ||
4827 | static void | |
fba45db2 | 4828 | threadalive_test (char *cmd, int tty) |
c906108c SS |
4829 | { |
4830 | int sample_thread = SAMPLE_THREAD; | |
4831 | ||
4832 | if (remote_thread_alive (sample_thread)) | |
4833 | printf_filtered ("PASS: Thread alive test\n"); | |
4834 | else | |
4835 | printf_filtered ("FAIL: Thread alive test\n"); | |
4836 | } | |
4837 | ||
a14ed312 | 4838 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
4839 | |
4840 | void | |
fba45db2 | 4841 | output_threadid (char *title, threadref *ref) |
c906108c SS |
4842 | { |
4843 | char hexid[20]; | |
4844 | ||
4845 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4846 | hexid[16] = 0; | |
4847 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4848 | } | |
4849 | ||
4850 | static void | |
fba45db2 | 4851 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
4852 | { |
4853 | int startflag = 1; | |
4854 | threadref nextthread; | |
4855 | int done, result_count; | |
4856 | threadref threadlist[3]; | |
4857 | ||
4858 | printf_filtered ("Remote Threadlist test\n"); | |
4859 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4860 | &result_count, &threadlist[0])) | |
4861 | printf_filtered ("FAIL: threadlist test\n"); | |
4862 | else | |
4863 | { | |
4864 | threadref *scan = threadlist; | |
4865 | threadref *limit = scan + result_count; | |
4866 | ||
4867 | while (scan < limit) | |
4868 | output_threadid (" thread ", scan++); | |
4869 | } | |
4870 | } | |
4871 | ||
4872 | void | |
fba45db2 | 4873 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
4874 | { |
4875 | output_threadid ("Threadid: ", &info->threadid); | |
4876 | printf_filtered ("Name: %s\n ", info->shortname); | |
4877 | printf_filtered ("State: %s\n", info->display); | |
4878 | printf_filtered ("other: %s\n\n", info->more_display); | |
4879 | } | |
4880 | ||
4881 | int | |
fba45db2 | 4882 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
4883 | { |
4884 | int result; | |
4885 | int set; | |
4886 | struct gdb_ext_thread_info threadinfo; | |
4887 | ||
4888 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4889 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4890 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4891 | display_thread_info (&threadinfo); | |
4892 | return result; | |
4893 | } | |
4894 | ||
4895 | static void | |
fba45db2 | 4896 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
4897 | { |
4898 | int athread = SAMPLE_THREAD; | |
4899 | threadref thread; | |
4900 | int set; | |
4901 | ||
4902 | int_to_threadref (&thread, athread); | |
4903 | printf_filtered ("Remote Threadinfo test\n"); | |
4904 | if (!get_and_display_threadinfo (&thread)) | |
4905 | printf_filtered ("FAIL cannot get thread info\n"); | |
4906 | } | |
4907 | ||
4908 | static int | |
fba45db2 | 4909 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
4910 | { |
4911 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4912 | return get_and_display_threadinfo (ref); | |
4913 | } | |
4914 | ||
4915 | static void | |
fba45db2 | 4916 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
4917 | { |
4918 | printf_filtered ("Remote Threadlist update test\n"); | |
4919 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4920 | } | |
4921 | ||
4922 | static void | |
4923 | init_remote_threadtests (void) | |
4924 | { | |
4925 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4926 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4927 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4928 | "Fetch and display info about one thread"); | |
4929 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4930 | "Test setting to a different thread"); | |
4931 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4932 | "Iterate through updating all remote thread info"); | |
4933 | add_com ("talive", class_obscure, threadalive_test, | |
4934 | " Remote thread alive test "); | |
4935 | } | |
4936 | ||
4937 | #endif /* 0 */ | |
4938 | ||
4939 | static void | |
fba45db2 | 4940 | init_remote_ops (void) |
c906108c | 4941 | { |
c5aa993b | 4942 | remote_ops.to_shortname = "remote"; |
c906108c | 4943 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4944 | remote_ops.to_doc = |
c906108c | 4945 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
4946 | Specify the serial device it is connected to\n\ |
4947 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
4948 | remote_ops.to_open = remote_open; |
4949 | remote_ops.to_close = remote_close; | |
c906108c | 4950 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4951 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4952 | remote_ops.to_wait = remote_wait; |
4953 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4954 | remote_ops.to_store_registers = remote_store_registers; | |
4955 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4956 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4957 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4958 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4959 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4960 | remote_ops.to_kill = remote_kill; |
4961 | remote_ops.to_load = generic_load; | |
c906108c SS |
4962 | remote_ops.to_mourn_inferior = remote_mourn; |
4963 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4964 | remote_ops.to_find_new_threads = remote_threads_info; |
9d1f7ab2 | 4965 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
4966 | remote_ops.to_stop = remote_stop; |
4967 | remote_ops.to_query = remote_query; | |
96baa820 | 4968 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 4969 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
4970 | remote_ops.to_has_all_memory = 1; |
4971 | remote_ops.to_has_memory = 1; | |
4972 | remote_ops.to_has_stack = 1; | |
4973 | remote_ops.to_has_registers = 1; | |
4974 | remote_ops.to_has_execution = 1; | |
4975 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4976 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4977 | } |
4978 | ||
4979 | /* Set up the extended remote vector by making a copy of the standard | |
4980 | remote vector and adding to it. */ | |
4981 | ||
4982 | static void | |
fba45db2 | 4983 | init_extended_remote_ops (void) |
c906108c SS |
4984 | { |
4985 | extended_remote_ops = remote_ops; | |
4986 | ||
0f71a2f6 | 4987 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4988 | extended_remote_ops.to_longname = |
c906108c | 4989 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4990 | extended_remote_ops.to_doc = |
c906108c SS |
4991 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4992 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4993 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4994 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4995 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4996 | } |
4997 | ||
4998 | /* | |
4999 | * Command: info remote-process | |
5000 | * | |
5001 | * This implements Cisco's version of the "info proc" command. | |
5002 | * | |
5003 | * This query allows the target stub to return an arbitrary string | |
5004 | * (or strings) giving arbitrary information about the target process. | |
5005 | * This is optional; the target stub isn't required to implement it. | |
5006 | * | |
5007 | * Syntax: qfProcessInfo request first string | |
5008 | * qsProcessInfo request subsequent string | |
5009 | * reply: 'O'<hex-encoded-string> | |
5010 | * 'l' last reply (empty) | |
5011 | */ | |
5012 | ||
5013 | static void | |
c2d11a7d | 5014 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5015 | { |
085dd6e6 | 5016 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
5017 | |
5018 | if (remote_desc == 0) | |
5019 | error ("Command can only be used when connected to the remote target."); | |
5020 | ||
5021 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 5022 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 5023 | if (buf[0] == 0) |
c5aa993b | 5024 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5025 | |
5026 | if (buf[0] == 'E') | |
5027 | error ("info proc: target error."); | |
5028 | ||
c5aa993b | 5029 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5030 | { |
5031 | remote_console_output (&buf[1]); | |
5032 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 5033 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
5034 | } |
5035 | } | |
5036 | ||
5037 | /* | |
5038 | * Target Cisco | |
5039 | */ | |
5040 | ||
5041 | static void | |
c2d11a7d | 5042 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5043 | { |
5044 | if (name == 0) | |
5045 | error ( | |
c5aa993b | 5046 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5047 | device is attached to the remote system (e.g. host:port)."); |
5048 | ||
6426a772 JM |
5049 | /* See FIXME above */ |
5050 | wait_forever_enabled_p = 1; | |
5051 | ||
0f71a2f6 JM |
5052 | target_preopen (from_tty); |
5053 | ||
5054 | unpush_target (&remote_cisco_ops); | |
5055 | ||
0f71a2f6 JM |
5056 | remote_desc = SERIAL_OPEN (name); |
5057 | if (!remote_desc) | |
5058 | perror_with_name (name); | |
5059 | ||
5060 | /* | |
5061 | * If a baud rate was specified on the gdb command line it will | |
5062 | * be greater than the initial value of -1. If it is, use it otherwise | |
5063 | * default to 9600 | |
5064 | */ | |
5065 | ||
5066 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5067 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5068 | { |
5069 | SERIAL_CLOSE (remote_desc); | |
5070 | perror_with_name (name); | |
5071 | } | |
5072 | ||
5073 | SERIAL_RAW (remote_desc); | |
5074 | ||
5075 | /* If there is something sitting in the buffer we might take it as a | |
5076 | response to a command, which would be bad. */ | |
5077 | SERIAL_FLUSH_INPUT (remote_desc); | |
5078 | ||
5079 | if (from_tty) | |
5080 | { | |
5081 | puts_filtered ("Remote debugging using "); | |
5082 | puts_filtered (name); | |
5083 | puts_filtered ("\n"); | |
5084 | } | |
5085 | ||
5086 | remote_cisco_mode = 1; | |
5087 | ||
5088 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5089 | ||
d471ea57 | 5090 | init_all_packet_configs (); |
0f71a2f6 | 5091 | |
c5aa993b | 5092 | general_thread = -2; |
0f71a2f6 JM |
5093 | continue_thread = -2; |
5094 | ||
9d1f7ab2 MS |
5095 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5096 | use_threadinfo_query = 1; | |
5097 | use_threadextra_query = 1; | |
5098 | ||
0f71a2f6 JM |
5099 | /* Without this, some commands which require an active target (such |
5100 | as kill) won't work. This variable serves (at least) double duty | |
5101 | as both the pid of the target process (if it has such), and as a | |
5102 | flag indicating that a target is active. These functions should | |
5103 | be split out into seperate variables, especially since GDB will | |
5104 | someday have a notion of debugging several processes. */ | |
5105 | inferior_pid = MAGIC_NULL_PID; | |
5106 | ||
5107 | /* Start the remote connection; if error (0), discard this target. */ | |
5108 | ||
c5aa993b JM |
5109 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5110 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5111 | RETURN_MASK_ALL)) |
5112 | { | |
5113 | pop_target (); | |
5114 | return; | |
5115 | } | |
5116 | } | |
5117 | ||
5118 | static void | |
c2d11a7d | 5119 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5120 | { |
5121 | remote_cisco_mode = 0; | |
5122 | remote_close (quitting); | |
5123 | } | |
5124 | ||
c5aa993b | 5125 | static void |
8ab86381 | 5126 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5127 | { |
5128 | remote_mourn_1 (&remote_cisco_ops); | |
5129 | } | |
5130 | ||
c5aa993b JM |
5131 | enum |
5132 | { | |
5133 | READ_MORE, | |
5134 | FATAL_ERROR, | |
5135 | ENTER_DEBUG, | |
0f71a2f6 | 5136 | DISCONNECT_TELNET |
c5aa993b JM |
5137 | } |
5138 | minitelnet_return; | |
0f71a2f6 JM |
5139 | |
5140 | /* shared between readsocket() and readtty() */ | |
5141 | static char *tty_input; | |
5142 | ||
5143 | static int escape_count; | |
5144 | static int echo_check; | |
5145 | extern int quit_flag; | |
5146 | ||
5147 | static int | |
c2d11a7d | 5148 | readsocket (void) |
0f71a2f6 JM |
5149 | { |
5150 | int data; | |
5151 | ||
5152 | /* Loop until the socket doesn't have any more data */ | |
5153 | ||
c5aa993b | 5154 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5155 | { |
5156 | /* Check for the escape sequence */ | |
c5aa993b | 5157 | if (data == '|') |
0f71a2f6 JM |
5158 | { |
5159 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5160 | if (++escape_count == 4) |
0f71a2f6 JM |
5161 | { |
5162 | return ENTER_DEBUG; | |
5163 | } | |
c5aa993b JM |
5164 | else |
5165 | { /* This is a '|', but not the fourth in a row. | |
5166 | Continue without echoing it. If it isn't actually | |
5167 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5168 | continue; |
5169 | } | |
5170 | } | |
c5aa993b JM |
5171 | else |
5172 | /* Not a '|' */ | |
5173 | { | |
0f71a2f6 JM |
5174 | /* Ensure any pending '|'s are flushed. */ |
5175 | ||
c5aa993b JM |
5176 | for (; escape_count > 0; escape_count--) |
5177 | putchar ('|'); | |
0f71a2f6 | 5178 | } |
0f71a2f6 | 5179 | |
c5aa993b JM |
5180 | if (data == '\r') /* If this is a return character, */ |
5181 | continue; /* - just supress it. */ | |
5182 | ||
5183 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5184 | { |
5185 | if (tty_input[echo_check] == data) | |
5186 | { | |
c5aa993b JM |
5187 | echo_check++; /* Character matched user input: */ |
5188 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5189 | } |
c5aa993b JM |
5190 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5191 | { /* End of the line (and of echo checking). */ | |
5192 | echo_check = -1; /* No more echo supression */ | |
5193 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5194 | } |
5195 | else | |
c5aa993b JM |
5196 | { /* Failed check for echo of user input. |
5197 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5198 | int j; |
5199 | ||
c5aa993b | 5200 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5201 | putchar (tty_input[j]); |
5202 | echo_check = -1; | |
5203 | } | |
5204 | } | |
c5aa993b | 5205 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5206 | } |
5207 | ||
c5aa993b JM |
5208 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5209 | return READ_MORE; /* Try to read some more */ | |
5210 | else | |
5211 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5212 | } |
5213 | ||
5214 | static int | |
c2d11a7d | 5215 | readtty (void) |
0f71a2f6 | 5216 | { |
0f71a2f6 JM |
5217 | int tty_bytecount; |
5218 | ||
5219 | /* First, read a buffer full from the terminal */ | |
5220 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5221 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5222 | { |
5223 | perror ("readtty: read failed"); | |
5224 | return FATAL_ERROR; | |
5225 | } | |
5226 | ||
5227 | /* Remove a quoted newline. */ | |
5228 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5229 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5230 | { | |
c5aa993b JM |
5231 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5232 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5233 | } |
5234 | ||
5235 | /* Turn trailing newlines into returns */ | |
5236 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5237 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5238 | |
5239 | /* If the line consists of a ~, enter debugging mode. */ | |
5240 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5241 | return ENTER_DEBUG; | |
5242 | ||
5243 | /* Make this a zero terminated string and write it out */ | |
5244 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5245 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5246 | { |
5247 | perror_with_name ("readtty: write failed"); | |
5248 | return FATAL_ERROR; | |
5249 | } | |
5250 | ||
5251 | return READ_MORE; | |
5252 | } | |
5253 | ||
5254 | static int | |
c2d11a7d | 5255 | minitelnet (void) |
0f71a2f6 JM |
5256 | { |
5257 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5258 | int tablesize; /* max number of FDs for select */ |
5259 | int status; | |
5260 | int quit_count = 0; | |
0f71a2f6 JM |
5261 | |
5262 | extern int escape_count; /* global shared by readsocket */ | |
5263 | extern int echo_check; /* ditto */ | |
5264 | ||
5265 | escape_count = 0; | |
c5aa993b | 5266 | echo_check = -1; |
0f71a2f6 JM |
5267 | |
5268 | tablesize = 8 * sizeof (input); | |
5269 | ||
c5aa993b | 5270 | for (;;) |
0f71a2f6 JM |
5271 | { |
5272 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5273 | this must be done *before* the select as there may be |
5274 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5275 | |
c5aa993b | 5276 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5277 | { |
5278 | error ("Debugging terminated by communications error"); | |
5279 | } | |
c5aa993b | 5280 | else if (status != READ_MORE) |
0f71a2f6 JM |
5281 | { |
5282 | return (status); | |
5283 | } | |
5284 | ||
c5aa993b | 5285 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5286 | |
5287 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5288 | |
0f71a2f6 | 5289 | FD_ZERO (&input); |
c5aa993b | 5290 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5291 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5292 | |
5293 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5294 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5295 | { |
5296 | error ("Communications error on select %d", errno); | |
5297 | } | |
5298 | ||
5299 | /* Handle Control-C typed */ | |
5300 | ||
c5aa993b | 5301 | if (quit_flag) |
0f71a2f6 JM |
5302 | { |
5303 | if ((++quit_count) == 2) | |
5304 | { | |
5305 | if (query ("Interrupt GDB? ")) | |
5306 | { | |
5307 | printf_filtered ("Interrupted by user.\n"); | |
5308 | return_to_top_level (RETURN_QUIT); | |
5309 | } | |
5310 | quit_count = 0; | |
5311 | } | |
5312 | quit_flag = 0; | |
5313 | ||
5314 | if (remote_break) | |
5315 | SERIAL_SEND_BREAK (remote_desc); | |
5316 | else | |
5317 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5318 | ||
5319 | continue; | |
5320 | } | |
5321 | ||
5322 | /* Handle console input */ | |
5323 | ||
c5aa993b | 5324 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5325 | { |
5326 | quit_count = 0; | |
5327 | echo_check = 0; | |
5328 | status = readtty (); | |
5329 | if (status == READ_MORE) | |
5330 | continue; | |
5331 | ||
5332 | return status; /* telnet session ended */ | |
5333 | } | |
5334 | } | |
5335 | } | |
5336 | ||
5337 | static int | |
c2d11a7d | 5338 | remote_cisco_wait (int pid, struct target_waitstatus *status) |
0f71a2f6 | 5339 | { |
c5aa993b | 5340 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5341 | { |
5342 | error ("Debugging session terminated by protocol error"); | |
5343 | } | |
5344 | putpkt ("?"); | |
5345 | return remote_wait (pid, status); | |
5346 | } | |
5347 | ||
5348 | static void | |
fba45db2 | 5349 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5350 | { |
5351 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5352 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5353 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5354 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5355 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5356 | remote_cisco_ops.to_open = remote_cisco_open; |
5357 | remote_cisco_ops.to_close = remote_cisco_close; | |
5358 | remote_cisco_ops.to_detach = remote_detach; | |
5359 | remote_cisco_ops.to_resume = remote_resume; | |
5360 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5361 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5362 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5363 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5364 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5365 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5366 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5367 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5368 | remote_cisco_ops.to_kill = remote_kill; |
5369 | remote_cisco_ops.to_load = generic_load; | |
5370 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5371 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5372 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5373 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c5aa993b JM |
5374 | remote_cisco_ops.to_stratum = process_stratum; |
5375 | remote_cisco_ops.to_has_all_memory = 1; | |
5376 | remote_cisco_ops.to_has_memory = 1; | |
5377 | remote_cisco_ops.to_has_stack = 1; | |
5378 | remote_cisco_ops.to_has_registers = 1; | |
5379 | remote_cisco_ops.to_has_execution = 1; | |
5380 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5381 | } |
5382 | ||
6426a772 JM |
5383 | static int |
5384 | remote_can_async_p (void) | |
5385 | { | |
5386 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5387 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5388 | } |
5389 | ||
5390 | static int | |
5391 | remote_is_async_p (void) | |
5392 | { | |
5393 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5394 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5395 | } |
5396 | ||
2acceee2 JM |
5397 | /* Pass the SERIAL event on and up to the client. One day this code |
5398 | will be able to delay notifying the client of an event until the | |
5399 | point where an entire packet has been received. */ | |
5400 | ||
5401 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5402 | static void *async_client_context; | |
5403 | static serial_event_ftype remote_async_serial_handler; | |
5404 | ||
6426a772 | 5405 | static void |
2acceee2 | 5406 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5407 | { |
2acceee2 JM |
5408 | /* Don't propogate error information up to the client. Instead let |
5409 | the client find out about the error by querying the target. */ | |
5410 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5411 | } | |
5412 | ||
5413 | static void | |
5414 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5415 | { | |
ed9a39eb | 5416 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5417 | internal_error (__FILE__, __LINE__, |
5418 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5419 | |
2acceee2 JM |
5420 | if (callback != NULL) |
5421 | { | |
5422 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5423 | async_client_callback = callback; | |
5424 | async_client_context = context; | |
5425 | } | |
5426 | else | |
5427 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5428 | } |
5429 | ||
43ff13b4 JM |
5430 | /* Target async and target extended-async. |
5431 | ||
5432 | This are temporary targets, until it is all tested. Eventually | |
5433 | async support will be incorporated int the usual 'remote' | |
5434 | target. */ | |
5435 | ||
5436 | static void | |
c2d11a7d | 5437 | init_remote_async_ops (void) |
43ff13b4 JM |
5438 | { |
5439 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5440 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5441 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5442 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5443 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5444 | remote_async_ops.to_open = remote_async_open; |
5445 | remote_async_ops.to_close = remote_close; | |
5446 | remote_async_ops.to_detach = remote_async_detach; | |
5447 | remote_async_ops.to_resume = remote_async_resume; | |
5448 | remote_async_ops.to_wait = remote_async_wait; | |
5449 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5450 | remote_async_ops.to_store_registers = remote_store_registers; | |
5451 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5452 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5453 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5454 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5455 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5456 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5457 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5458 | remote_async_ops.to_kill = remote_async_kill; |
5459 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5460 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5461 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5462 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5463 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
43ff13b4 JM |
5464 | remote_async_ops.to_stop = remote_stop; |
5465 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5466 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5467 | remote_async_ops.to_stratum = process_stratum; |
5468 | remote_async_ops.to_has_all_memory = 1; | |
5469 | remote_async_ops.to_has_memory = 1; | |
5470 | remote_async_ops.to_has_stack = 1; | |
5471 | remote_async_ops.to_has_registers = 1; | |
5472 | remote_async_ops.to_has_execution = 1; | |
5473 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5474 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5475 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5476 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5477 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5478 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5479 | } |
5480 | ||
5481 | /* Set up the async extended remote vector by making a copy of the standard | |
5482 | remote vector and adding to it. */ | |
5483 | ||
5484 | static void | |
c2d11a7d | 5485 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5486 | { |
5487 | extended_async_remote_ops = remote_async_ops; | |
5488 | ||
5489 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5490 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5491 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5492 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5493 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5494 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5495 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5496 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5497 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5498 | } | |
5499 | ||
5a2468f5 | 5500 | static void |
c2d11a7d | 5501 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5502 | { |
5503 | ||
5504 | } | |
5505 | ||
d471ea57 AC |
5506 | static void |
5507 | show_remote_cmd (char *args, int from_tty) | |
5508 | { | |
5509 | show_remote_protocol_Z_packet_cmd (args, from_tty); | |
5510 | show_remote_protocol_P_packet_cmd (args, from_tty); | |
5511 | show_remote_protocol_binary_download_cmd (args, from_tty); | |
5512 | } | |
5a2468f5 | 5513 | |
0f71a2f6 | 5514 | static void |
fba45db2 | 5515 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5516 | { |
11cf8741 JM |
5517 | build_remote_packet_sizes (); |
5518 | ||
5519 | /* Cisco stuff */ | |
0f71a2f6 | 5520 | tty_input = xmalloc (PBUFSIZ); |
d696208f | 5521 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5522 | } |
5523 | ||
c906108c | 5524 | void |
fba45db2 | 5525 | _initialize_remote (void) |
c906108c | 5526 | { |
5a2468f5 JM |
5527 | static struct cmd_list_element *remote_set_cmdlist; |
5528 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5529 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5530 | |
0f71a2f6 JM |
5531 | /* architecture specific data */ |
5532 | build_remote_gdbarch_data (); | |
5533 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5534 | register_remote_packet_sizes (); |
5535 | register_gdbarch_swap (&remote_address_size, | |
5536 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5537 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5538 | ||
c906108c SS |
5539 | init_remote_ops (); |
5540 | add_target (&remote_ops); | |
5541 | ||
5542 | init_extended_remote_ops (); | |
5543 | add_target (&extended_remote_ops); | |
cce74817 | 5544 | |
43ff13b4 JM |
5545 | init_remote_async_ops (); |
5546 | add_target (&remote_async_ops); | |
5547 | ||
5548 | init_extended_async_remote_ops (); | |
5549 | add_target (&extended_async_remote_ops); | |
5550 | ||
0f71a2f6 JM |
5551 | init_remote_cisco_ops (); |
5552 | add_target (&remote_cisco_ops); | |
5553 | ||
c906108c SS |
5554 | #if 0 |
5555 | init_remote_threadtests (); | |
5556 | #endif | |
5557 | ||
d471ea57 AC |
5558 | /* set/show remote ... */ |
5559 | ||
5a2468f5 JM |
5560 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5561 | Remote protocol specific variables\n\ | |
5562 | Configure various remote-protocol specific variables such as\n\ | |
5563 | the packets being used", | |
cff3e48b | 5564 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5565 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5566 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5567 | Remote protocol specific variables\n\ |
5568 | Configure various remote-protocol specific variables such as\n\ | |
5569 | the packets being used", | |
cff3e48b | 5570 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5571 | 0/*allow-unknown*/, &showlist); |
5572 | ||
c5aa993b | 5573 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5574 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5575 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5576 | &cmdlist); |
5577 | ||
5578 | add_cmd ("packet", class_maintenance, packet_command, | |
5579 | "Send an arbitrary packet to a remote target.\n\ | |
5580 | maintenance packet TEXT\n\ | |
5581 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5582 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5583 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5584 | terminating `#' character and checksum.", | |
5585 | &maintenancelist); | |
5586 | ||
c5aa993b | 5587 | add_show_from_set |
c906108c | 5588 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5589 | var_boolean, (char *) &remote_break, |
c906108c SS |
5590 | "Set whether to send break if interrupted.\n", |
5591 | &setlist), | |
5592 | &showlist); | |
5593 | ||
11cf8741 JM |
5594 | /* Install commands for configuring memory read/write packets. */ |
5595 | ||
5596 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5597 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5598 | &setlist); | |
4ad5b0f7 | 5599 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5600 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5601 | &showlist); | |
5602 | add_cmd ("memory-write-packet-size", no_class, | |
5603 | set_memory_write_packet_size, | |
5604 | "Set the maximum number of bytes per memory-write packet.\n" | |
5605 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5606 | "default packet size. The actual limit is further reduced\n" | |
5607 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5608 | "further restriction and ``limit'' to enable that restriction\n", | |
5609 | &remote_set_cmdlist); | |
5610 | add_cmd ("memory-read-packet-size", no_class, | |
5611 | set_memory_read_packet_size, | |
5612 | "Set the maximum number of bytes per memory-read packet.\n" | |
5613 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5614 | "default packet size. The actual limit is further reduced\n" | |
5615 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5616 | "further restriction and ``limit'' to enable that restriction\n", | |
5617 | &remote_set_cmdlist); | |
5618 | add_cmd ("memory-write-packet-size", no_class, | |
5619 | show_memory_write_packet_size, | |
5620 | "Show the maximum number of bytes per memory-write packet.\n", | |
5621 | &remote_show_cmdlist); | |
5622 | add_cmd ("memory-read-packet-size", no_class, | |
5623 | show_memory_read_packet_size, | |
5624 | "Show the maximum number of bytes per memory-read packet.\n", | |
5625 | &remote_show_cmdlist); | |
c906108c | 5626 | |
c5aa993b | 5627 | add_show_from_set |
c906108c | 5628 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5629 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5630 | "Set the maximum size of the address (in bits) \ |
5631 | in a memory packet.\n", | |
5632 | &setlist), | |
c5aa993b | 5633 | &showlist); |
c906108c | 5634 | |
96baa820 JM |
5635 | add_packet_config_cmd (&remote_protocol_binary_download, |
5636 | "X", "binary-download", | |
5637 | set_remote_protocol_binary_download_cmd, | |
5638 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5639 | &remote_set_cmdlist, &remote_show_cmdlist, |
5640 | 1); | |
96baa820 JM |
5641 | #if 0 |
5642 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5643 | compatibility. */ | |
c5aa993b | 5644 | add_show_from_set |
b83266a0 SS |
5645 | (add_set_cmd ("remotebinarydownload", no_class, |
5646 | var_boolean, (char *) &remote_binary_download, | |
5647 | "Set binary downloads.\n", &setlist), | |
5648 | &showlist); | |
96baa820 | 5649 | #endif |
0f71a2f6 JM |
5650 | |
5651 | add_info ("remote-process", remote_info_process, | |
5652 | "Query the remote system for process info."); | |
5653 | ||
d471ea57 AC |
5654 | add_packet_config_cmd (&remote_protocol_P, |
5655 | "P", "set-register", | |
5a2468f5 JM |
5656 | set_remote_protocol_P_packet_cmd, |
5657 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5658 | &remote_set_cmdlist, &remote_show_cmdlist, |
5659 | 1); | |
5660 | ||
5661 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5662 | "Z0", "software-breakpoint", | |
5663 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5664 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5665 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5666 | 0); | |
5667 | ||
5668 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5669 | "Z1", "hardware-breakpoint", | |
5670 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5671 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5672 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5673 | 0); | |
5674 | ||
5675 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5676 | "Z2", "write-watchpoint", | |
5677 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5678 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5679 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5680 | 0); | |
5681 | ||
5682 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5683 | "Z3", "read-watchpoint", | |
5684 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5685 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5686 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5687 | 0); | |
5688 | ||
5689 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5690 | "Z4", "access-watchpoint", | |
5691 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5692 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5693 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5694 | 0); | |
5695 | ||
5696 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
5697 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
5698 | &remote_Z_packet_detect, | |
5699 | "\ | |
5700 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
5701 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
5702 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
5703 | "Show use of remote protocol `Z' packets ", | |
5704 | &remote_show_cmdlist); | |
c906108c | 5705 | } |