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> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
31 | #include "target.h" | |
c5aa993b | 32 | /*#include "terminal.h" */ |
c906108c SS |
33 | #include "gdbcmd.h" |
34 | #include "objfiles.h" | |
35 | #include "gdb-stabs.h" | |
36 | #include "gdbthread.h" | |
c2c6d25f | 37 | #include "remote.h" |
4e052eda | 38 | #include "regcache.h" |
c906108c | 39 | |
7a292a7a | 40 | #include <ctype.h> |
9846de1b | 41 | #include <sys/time.h> |
c906108c SS |
42 | #ifdef USG |
43 | #include <sys/types.h> | |
44 | #endif | |
45 | ||
43ff13b4 | 46 | #include "event-loop.h" |
c2c6d25f | 47 | #include "event-top.h" |
2acceee2 | 48 | #include "inf-loop.h" |
43ff13b4 | 49 | |
c906108c SS |
50 | #include <signal.h> |
51 | #include "serial.h" | |
52 | ||
53 | /* Prototypes for local functions */ | |
6426a772 JM |
54 | static void cleanup_sigint_signal_handler (void *dummy); |
55 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 56 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 57 | |
a14ed312 KB |
58 | static void handle_remote_sigint (int); |
59 | static void handle_remote_sigint_twice (int); | |
60 | static void async_remote_interrupt (gdb_client_data); | |
61 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 62 | |
a14ed312 | 63 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 64 | |
917317f4 | 65 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 66 | |
a14ed312 | 67 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 68 | |
a14ed312 | 69 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 70 | |
a14ed312 KB |
71 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
72 | int len, int should_write, | |
29e57380 | 73 | struct mem_attrib *attrib, |
a14ed312 | 74 | struct target_ops *target); |
c906108c | 75 | |
a14ed312 | 76 | static void remote_prepare_to_store (void); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_fetch_registers (int regno); |
c906108c | 79 | |
a14ed312 KB |
80 | static void remote_resume (int pid, int step, enum target_signal siggnal); |
81 | static void remote_async_resume (int pid, int step, | |
82 | enum target_signal siggnal); | |
83 | static int remote_start_remote (PTR); | |
c906108c | 84 | |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
a14ed312 KB |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
92 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
93 | int extended_p); | |
c906108c | 94 | |
a14ed312 | 95 | static void remote_close (int quitting); |
c906108c | 96 | |
a14ed312 | 97 | static void remote_store_registers (int regno); |
c906108c | 98 | |
a14ed312 KB |
99 | static void remote_mourn (void); |
100 | static void remote_async_mourn (void); | |
c906108c | 101 | |
a14ed312 | 102 | static void extended_remote_restart (void); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_mourn (void); |
c906108c | 105 | |
a14ed312 KB |
106 | static void extended_remote_create_inferior (char *, char *, char **); |
107 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 108 | |
a14ed312 | 109 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 110 | |
c2d11a7d | 111 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 112 | |
a14ed312 | 113 | static int readchar (int timeout); |
c906108c | 114 | |
a14ed312 KB |
115 | static int remote_wait (int pid, struct target_waitstatus *status); |
116 | static int remote_async_wait (int pid, struct target_waitstatus *status); | |
c906108c | 117 | |
a14ed312 KB |
118 | static void remote_kill (void); |
119 | static void remote_async_kill (void); | |
c906108c | 120 | |
a14ed312 | 121 | static int tohex (int nib); |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_detach (char *args, int from_tty); |
124 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 125 | |
a14ed312 | 126 | static void remote_interrupt (int signo); |
c906108c | 127 | |
a14ed312 | 128 | static void remote_interrupt_twice (int signo); |
7a292a7a | 129 | |
a14ed312 | 130 | static void interrupt_query (void); |
c906108c | 131 | |
a14ed312 | 132 | static void set_thread (int, int); |
c906108c | 133 | |
a14ed312 | 134 | static int remote_thread_alive (int); |
c906108c | 135 | |
a14ed312 | 136 | static void get_offsets (void); |
c906108c | 137 | |
c2d11a7d | 138 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 139 | |
a14ed312 | 140 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 141 | |
a14ed312 | 142 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 143 | |
a14ed312 | 144 | static int hexnumlen (ULONGEST num); |
c906108c | 145 | |
a14ed312 | 146 | static void init_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void init_extended_remote_ops (void); |
c906108c | 149 | |
a14ed312 | 150 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
151 | |
152 | static struct target_ops remote_cisco_ops; | |
153 | ||
a14ed312 | 154 | static void remote_stop (void); |
c906108c | 155 | |
a14ed312 | 156 | static int ishex (int ch, int *val); |
c906108c | 157 | |
a14ed312 | 158 | static int stubhex (int ch); |
c906108c | 159 | |
a14ed312 | 160 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
a14ed312 | 168 | static void print_packet (char *); |
c906108c | 169 | |
a14ed312 | 170 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 171 | |
a14ed312 | 172 | static void compare_sections_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void packet_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 177 | |
a14ed312 | 178 | static int remote_current_thread (int oldpid); |
c906108c | 179 | |
a14ed312 | 180 | static void remote_find_new_threads (void); |
c906108c | 181 | |
a14ed312 | 182 | static void record_currthread (int currthread); |
c906108c | 183 | |
c906108c SS |
184 | /* exported functions */ |
185 | ||
a14ed312 | 186 | extern int fromhex (int a); |
c906108c | 187 | |
a14ed312 | 188 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 189 | |
a14ed312 | 190 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 191 | |
5a2468f5 | 192 | struct packet_config; |
5a2468f5 | 193 | |
a14ed312 | 194 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 195 | |
d471ea57 | 196 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 197 | |
c906108c SS |
198 | /* Define the target subroutine names */ |
199 | ||
a14ed312 | 200 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 201 | |
a14ed312 | 202 | void _initialize_remote (void); |
c906108c SS |
203 | |
204 | /* */ | |
205 | ||
206 | static struct target_ops remote_ops; | |
207 | ||
208 | static struct target_ops extended_remote_ops; | |
209 | ||
43ff13b4 JM |
210 | /* Temporary target ops. Just like the remote_ops and |
211 | extended_remote_ops, but with asynchronous support. */ | |
212 | static struct target_ops remote_async_ops; | |
213 | ||
214 | static struct target_ops extended_async_remote_ops; | |
215 | ||
6426a772 JM |
216 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
217 | ``forever'' still use the normal timeout mechanism. This is | |
218 | currently used by the ASYNC code to guarentee that target reads | |
219 | during the initial connect always time-out. Once getpkt has been | |
220 | modified to return a timeout indication and, in turn | |
221 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
222 | this can go away. */ | |
223 | static int wait_forever_enabled_p = 1; | |
224 | ||
225 | ||
c906108c SS |
226 | /* This variable chooses whether to send a ^C or a break when the user |
227 | requests program interruption. Although ^C is usually what remote | |
228 | systems expect, and that is the default here, sometimes a break is | |
229 | preferable instead. */ | |
230 | ||
231 | static int remote_break; | |
232 | ||
c906108c SS |
233 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
234 | remote_open knows that we don't have a file open when the program | |
235 | starts. */ | |
236 | static serial_t remote_desc = NULL; | |
237 | ||
0f71a2f6 JM |
238 | /* This is set by the target (thru the 'S' message) |
239 | to denote that the target is in kernel mode. */ | |
240 | static int cisco_kernel_mode = 0; | |
241 | ||
c906108c SS |
242 | /* This variable sets the number of bits in an address that are to be |
243 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
244 | leading zeros, the entire address would be sent. This variable | |
245 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
246 | initial implementation of remote.c restricted the address sent in | |
247 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
248 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
249 | address was never sent. Since fixing this bug may cause a break in | |
250 | some remote targets this variable is principly provided to | |
251 | facilitate backward compatibility. */ | |
252 | ||
253 | static int remote_address_size; | |
254 | ||
6426a772 JM |
255 | /* Tempoary to track who currently owns the terminal. See |
256 | target_async_terminal_* for more details. */ | |
257 | ||
258 | static int remote_async_terminal_ours_p; | |
259 | ||
11cf8741 JM |
260 | \f |
261 | /* This is the size (in chars) of the first response to the ``g'' | |
262 | packet. It is used as a heuristic when determining the maximum | |
263 | size of memory-read and memory-write packets. A target will | |
264 | typically only reserve a buffer large enough to hold the ``g'' | |
265 | packet. The size does not include packet overhead (headers and | |
266 | trailers). */ | |
267 | ||
268 | static long actual_register_packet_size; | |
269 | ||
270 | /* This is the maximum size (in chars) of a non read/write packet. It | |
271 | is also used as a cap on the size of read/write packets. */ | |
272 | ||
273 | static long remote_packet_size; | |
274 | /* compatibility. */ | |
275 | #define PBUFSIZ (remote_packet_size) | |
276 | ||
277 | /* User configurable variables for the number of characters in a | |
278 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
279 | default. Some targets need smaller values (fifo overruns, et.al.) | |
280 | and some users need larger values (speed up transfers). The | |
281 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
282 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
283 | negative - a hard limit). */ | |
284 | ||
285 | struct memory_packet_config | |
286 | { | |
287 | char *name; | |
288 | long size; | |
289 | int fixed_p; | |
290 | }; | |
291 | ||
292 | /* Compute the current size of a read/write packet. Since this makes | |
293 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
294 | ||
295 | static long | |
296 | get_memory_packet_size (struct memory_packet_config *config) | |
297 | { | |
298 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
299 | law?) that some hosts don't cope very well with large alloca() | |
300 | calls. Eventually the alloca() code will be replaced by calls to | |
301 | xmalloc() and make_cleanups() allowing this restriction to either | |
302 | be lifted or removed. */ | |
303 | #ifndef MAX_REMOTE_PACKET_SIZE | |
304 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
305 | #endif | |
306 | /* NOTE: 16 is just chosen at random. */ | |
307 | #ifndef MIN_REMOTE_PACKET_SIZE | |
308 | #define MIN_REMOTE_PACKET_SIZE 16 | |
309 | #endif | |
310 | long what_they_get; | |
311 | if (config->fixed_p) | |
312 | { | |
313 | if (config->size <= 0) | |
314 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
315 | else | |
316 | what_they_get = config->size; | |
317 | } | |
318 | else | |
319 | { | |
320 | what_they_get = remote_packet_size; | |
321 | /* Limit the packet to the size specified by the user. */ | |
322 | if (config->size > 0 | |
323 | && what_they_get > config->size) | |
324 | what_they_get = config->size; | |
325 | /* Limit it to the size of the targets ``g'' response. */ | |
326 | if (actual_register_packet_size > 0 | |
327 | && what_they_get > actual_register_packet_size) | |
328 | what_they_get = actual_register_packet_size; | |
329 | } | |
330 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
331 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
332 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
333 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
334 | return what_they_get; | |
335 | } | |
336 | ||
337 | /* Update the size of a read/write packet. If they user wants | |
338 | something really big then do a sanity check. */ | |
339 | ||
340 | static void | |
341 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
342 | { | |
343 | int fixed_p = config->fixed_p; | |
344 | long size = config->size; | |
345 | if (args == NULL) | |
346 | error ("Argument required (integer, `fixed' or `limited')."); | |
347 | else if (strcmp (args, "hard") == 0 | |
348 | || strcmp (args, "fixed") == 0) | |
349 | fixed_p = 1; | |
350 | else if (strcmp (args, "soft") == 0 | |
351 | || strcmp (args, "limit") == 0) | |
352 | fixed_p = 0; | |
353 | else | |
354 | { | |
355 | char *end; | |
356 | size = strtoul (args, &end, 0); | |
357 | if (args == end) | |
358 | error ("Invalid %s (bad syntax).", config->name); | |
359 | #if 0 | |
360 | /* Instead of explicitly capping the size of a packet to | |
361 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
362 | instead allowed to set the size to something arbitrarily | |
363 | large. */ | |
364 | if (size > MAX_REMOTE_PACKET_SIZE) | |
365 | error ("Invalid %s (too large).", config->name); | |
366 | #endif | |
367 | } | |
368 | /* Extra checks? */ | |
369 | if (fixed_p && !config->fixed_p) | |
370 | { | |
371 | if (! query ("The target may not be able to correctly handle a %s\n" | |
372 | "of %ld bytes. Change the packet size? ", | |
373 | config->name, size)) | |
374 | error ("Packet size not changed."); | |
375 | } | |
376 | /* Update the config. */ | |
377 | config->fixed_p = fixed_p; | |
378 | config->size = size; | |
379 | } | |
380 | ||
381 | static void | |
382 | show_memory_packet_size (struct memory_packet_config *config) | |
383 | { | |
384 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
385 | if (config->fixed_p) | |
386 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
387 | get_memory_packet_size (config)); | |
388 | else | |
389 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
390 | get_memory_packet_size (config)); | |
391 | } | |
392 | ||
393 | static struct memory_packet_config memory_write_packet_config = | |
394 | { | |
395 | "memory-write-packet-size", | |
396 | }; | |
397 | ||
398 | static void | |
399 | set_memory_write_packet_size (char *args, int from_tty) | |
400 | { | |
401 | set_memory_packet_size (args, &memory_write_packet_config); | |
402 | } | |
403 | ||
404 | static void | |
405 | show_memory_write_packet_size (char *args, int from_tty) | |
406 | { | |
407 | show_memory_packet_size (&memory_write_packet_config); | |
408 | } | |
409 | ||
410 | static long | |
411 | get_memory_write_packet_size (void) | |
412 | { | |
413 | return get_memory_packet_size (&memory_write_packet_config); | |
414 | } | |
415 | ||
416 | static struct memory_packet_config memory_read_packet_config = | |
417 | { | |
418 | "memory-read-packet-size", | |
419 | }; | |
420 | ||
421 | static void | |
422 | set_memory_read_packet_size (char *args, int from_tty) | |
423 | { | |
424 | set_memory_packet_size (args, &memory_read_packet_config); | |
425 | } | |
426 | ||
427 | static void | |
428 | show_memory_read_packet_size (char *args, int from_tty) | |
429 | { | |
430 | show_memory_packet_size (&memory_read_packet_config); | |
431 | } | |
432 | ||
433 | static long | |
434 | get_memory_read_packet_size (void) | |
435 | { | |
436 | long size = get_memory_packet_size (&memory_read_packet_config); | |
437 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
438 | extra buffer size argument before the memory read size can be | |
439 | increased beyond PBUFSIZ. */ | |
440 | if (size > PBUFSIZ) | |
441 | size = PBUFSIZ; | |
442 | return size; | |
443 | } | |
444 | ||
445 | /* Register packet size initialization. Since the bounds change when | |
446 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
447 | be multi-arched. */ | |
448 | ||
449 | static void | |
450 | register_remote_packet_sizes (void) | |
451 | { | |
452 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
453 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
454 | } | |
455 | ||
456 | static void | |
457 | build_remote_packet_sizes (void) | |
458 | { | |
c2d11a7d JM |
459 | /* Default maximum number of characters in a packet body. Many |
460 | remote stubs have a hardwired buffer size of 400 bytes | |
461 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
462 | as the maximum packet-size to ensure that the packet and an extra | |
463 | NUL character can always fit in the buffer. This stops GDB | |
464 | trashing stubs that try to squeeze an extra NUL into what is | |
465 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
466 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
467 | /* Should REGISTER_BYTES needs more space than the default, adjust |
468 | the size accordingly. Remember that each byte is encoded as two | |
469 | characters. 32 is the overhead for the packet header / | |
470 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
471 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
472 | little. */ | |
473 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
474 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
475 | ||
476 | /* This one is filled in when a ``g'' packet is received. */ | |
477 | actual_register_packet_size = 0; | |
478 | } | |
479 | \f | |
5a2468f5 JM |
480 | /* Generic configuration support for packets the stub optionally |
481 | supports. Allows the user to specify the use of the packet as well | |
482 | as allowing GDB to auto-detect support in the remote stub. */ | |
483 | ||
484 | enum packet_support | |
485 | { | |
486 | PACKET_SUPPORT_UNKNOWN = 0, | |
487 | PACKET_ENABLE, | |
488 | PACKET_DISABLE | |
489 | }; | |
490 | ||
5a2468f5 JM |
491 | struct packet_config |
492 | { | |
5a2468f5 JM |
493 | char *name; |
494 | char *title; | |
8e248173 | 495 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
496 | enum packet_support support; |
497 | }; | |
498 | ||
d471ea57 AC |
499 | /* Analyze a packet's return value and update the packet config |
500 | accordingly. */ | |
501 | ||
502 | enum packet_result | |
503 | { | |
504 | PACKET_ERROR, | |
505 | PACKET_OK, | |
506 | PACKET_UNKNOWN | |
507 | }; | |
508 | ||
5a2468f5 | 509 | static void |
d471ea57 | 510 | update_packet_config (struct packet_config *config) |
5a2468f5 | 511 | { |
d471ea57 AC |
512 | switch (config->detect) |
513 | { | |
514 | case CMD_AUTO_BOOLEAN_TRUE: | |
515 | config->support = PACKET_ENABLE; | |
516 | break; | |
517 | case CMD_AUTO_BOOLEAN_FALSE: | |
518 | config->support = PACKET_DISABLE; | |
519 | break; | |
520 | case CMD_AUTO_BOOLEAN_AUTO: | |
521 | config->support = PACKET_SUPPORT_UNKNOWN; | |
522 | break; | |
523 | } | |
5a2468f5 JM |
524 | } |
525 | ||
526 | static void | |
fba45db2 | 527 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
528 | { |
529 | char *support = "internal-error"; | |
530 | switch (config->support) | |
531 | { | |
532 | case PACKET_ENABLE: | |
533 | support = "enabled"; | |
534 | break; | |
535 | case PACKET_DISABLE: | |
536 | support = "disabled"; | |
537 | break; | |
538 | case PACKET_SUPPORT_UNKNOWN: | |
539 | support = "unknown"; | |
540 | break; | |
541 | } | |
542 | switch (config->detect) | |
543 | { | |
8e248173 | 544 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
545 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
546 | config->name, config->title, support); | |
547 | break; | |
8e248173 AC |
548 | case CMD_AUTO_BOOLEAN_TRUE: |
549 | case CMD_AUTO_BOOLEAN_FALSE: | |
550 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 551 | config->name, config->title, support); |
8e248173 | 552 | break; |
5a2468f5 JM |
553 | } |
554 | } | |
555 | ||
556 | static void | |
d471ea57 AC |
557 | add_packet_config_cmd (struct packet_config *config, |
558 | char *name, | |
559 | char *title, | |
560 | void (*set_func) (char *args, int from_tty, | |
561 | struct cmd_list_element * | |
562 | c), | |
563 | void (*show_func) (char *name, | |
564 | int from_tty), | |
565 | struct cmd_list_element **set_remote_list, | |
566 | struct cmd_list_element **show_remote_list, | |
567 | int legacy) | |
568 | { | |
569 | struct cmd_list_element *set_cmd; | |
570 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
571 | char *set_doc; |
572 | char *show_doc; | |
d471ea57 | 573 | char *cmd_name; |
5a2468f5 JM |
574 | config->name = name; |
575 | config->title = title; | |
8e248173 AC |
576 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
577 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
578 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
579 | name, title); | |
580 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
581 | name, title); | |
d471ea57 | 582 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 583 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
584 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
585 | &config->detect, set_doc, | |
586 | set_remote_list); | |
587 | set_cmd->function.sfunc = set_func; | |
588 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
589 | show_remote_list); | |
590 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
591 | if (legacy) | |
592 | { | |
593 | char *legacy_name; | |
76995688 | 594 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
595 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
596 | set_remote_list); | |
597 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
598 | show_remote_list); | |
599 | } | |
5a2468f5 JM |
600 | } |
601 | ||
d471ea57 AC |
602 | static enum packet_result |
603 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 604 | { |
d471ea57 | 605 | if (buf[0] != '\0') |
5a2468f5 | 606 | { |
d471ea57 AC |
607 | /* The stub recognized the packet request. Check that the |
608 | operation succeeded. */ | |
609 | switch (config->support) | |
610 | { | |
611 | case PACKET_SUPPORT_UNKNOWN: | |
612 | if (remote_debug) | |
613 | fprintf_unfiltered (gdb_stdlog, | |
614 | "Packet %s (%s) is supported\n", | |
615 | config->name, config->title); | |
616 | config->support = PACKET_ENABLE; | |
617 | break; | |
618 | case PACKET_DISABLE: | |
8e65ff28 AC |
619 | internal_error (__FILE__, __LINE__, |
620 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
621 | break; |
622 | case PACKET_ENABLE: | |
623 | break; | |
624 | } | |
625 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
626 | /* "OK" - definitly OK. */ | |
627 | return PACKET_OK; | |
628 | if (buf[0] == 'E' | |
629 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
630 | && buf[3] == '\0') | |
631 | /* "Enn" - definitly an error. */ | |
632 | return PACKET_ERROR; | |
633 | /* The packet may or may not be OK. Just assume it is */ | |
634 | return PACKET_OK; | |
635 | } | |
636 | else | |
637 | { | |
638 | /* The stub does not support the packet. */ | |
639 | switch (config->support) | |
640 | { | |
641 | case PACKET_ENABLE: | |
642 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
643 | /* If the stub previously indicated that the packet was | |
644 | supported then there is a protocol error.. */ | |
645 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
646 | config->name, config->title); | |
647 | else | |
648 | /* The user set it wrong. */ | |
649 | error ("Enabled packet %s (%s) not recognized by stub", | |
650 | config->name, config->title); | |
651 | break; | |
652 | case PACKET_SUPPORT_UNKNOWN: | |
653 | if (remote_debug) | |
654 | fprintf_unfiltered (gdb_stdlog, | |
655 | "Packet %s (%s) is NOT supported\n", | |
656 | config->name, config->title); | |
657 | config->support = PACKET_DISABLE; | |
658 | break; | |
659 | case PACKET_DISABLE: | |
660 | break; | |
661 | } | |
662 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
663 | } |
664 | } | |
665 | ||
44eaed12 C |
666 | /* Should we try the 'e' (step over range) request? */ |
667 | static struct packet_config remote_protocol_e; | |
668 | ||
669 | static void | |
670 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
671 | struct cmd_list_element *c) | |
672 | { | |
673 | update_packet_config (&remote_protocol_e); | |
674 | } | |
675 | ||
676 | static void | |
677 | show_remote_protocol_e_packet_cmd (char *args, int from_tty) | |
678 | { | |
679 | show_packet_config_cmd (&remote_protocol_e); | |
680 | } | |
681 | ||
682 | ||
683 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
684 | static struct packet_config remote_protocol_E; | |
685 | ||
686 | static void | |
687 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
688 | struct cmd_list_element *c) | |
689 | { | |
690 | update_packet_config (&remote_protocol_E); | |
691 | } | |
692 | ||
693 | static void | |
694 | show_remote_protocol_E_packet_cmd (char *args, int from_tty) | |
695 | { | |
696 | show_packet_config_cmd (&remote_protocol_E); | |
697 | } | |
698 | ||
699 | ||
5a2468f5 JM |
700 | /* Should we try the 'P' (set register) request? */ |
701 | ||
702 | static struct packet_config remote_protocol_P; | |
703 | ||
704 | static void | |
fba45db2 KB |
705 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
706 | struct cmd_list_element *c) | |
5a2468f5 | 707 | { |
d471ea57 | 708 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
709 | } |
710 | ||
711 | static void | |
fba45db2 | 712 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
713 | { |
714 | show_packet_config_cmd (&remote_protocol_P); | |
715 | } | |
716 | ||
d471ea57 AC |
717 | /* Should we try one of the 'Z' requests? */ |
718 | ||
719 | enum Z_packet_type | |
720 | { | |
721 | Z_PACKET_SOFTWARE_BP, | |
722 | Z_PACKET_HARDWARE_BP, | |
723 | Z_PACKET_WRITE_WP, | |
724 | Z_PACKET_READ_WP, | |
725 | Z_PACKET_ACCESS_WP, | |
726 | NR_Z_PACKET_TYPES | |
727 | }; | |
96baa820 | 728 | |
d471ea57 AC |
729 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
730 | ||
731 | /* FIXME: Instead of having all these boiler plate functions, the | |
732 | command callback should include a context argument. */ | |
733 | ||
734 | static void | |
735 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
736 | struct cmd_list_element *c) | |
737 | { | |
738 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
739 | } | |
740 | ||
741 | static void | |
742 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
743 | { | |
744 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
745 | } | |
746 | ||
747 | static void | |
748 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
749 | struct cmd_list_element *c) | |
750 | { | |
751 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
752 | } | |
753 | ||
754 | static void | |
755 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
756 | { | |
757 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
758 | } | |
759 | ||
760 | static void | |
761 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
762 | struct cmd_list_element *c) | |
763 | { | |
764 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
765 | } | |
766 | ||
767 | static void | |
768 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
769 | { | |
770 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
771 | } | |
772 | ||
773 | static void | |
774 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
775 | struct cmd_list_element *c) | |
776 | { | |
777 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
778 | } | |
779 | ||
780 | static void | |
781 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
782 | { | |
783 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
784 | } | |
785 | ||
786 | static void | |
787 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
788 | struct cmd_list_element *c) | |
789 | { | |
790 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
791 | } | |
792 | ||
793 | static void | |
794 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
795 | { | |
796 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
797 | } | |
798 | ||
799 | /* For compatibility with older distributions. Provide a ``set remote | |
800 | Z-packet ...'' command that updates all the Z packet types. */ | |
801 | ||
802 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
803 | |
804 | static void | |
fba45db2 KB |
805 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
806 | struct cmd_list_element *c) | |
96baa820 | 807 | { |
d471ea57 AC |
808 | int i; |
809 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
810 | { | |
811 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
812 | update_packet_config (&remote_protocol_Z[i]); | |
813 | } | |
96baa820 JM |
814 | } |
815 | ||
816 | static void | |
fba45db2 | 817 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 818 | { |
d471ea57 AC |
819 | int i; |
820 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
821 | { | |
822 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
823 | } | |
96baa820 JM |
824 | } |
825 | ||
826 | /* Should we try the 'X' (remote binary download) packet? | |
827 | ||
828 | This variable (available to the user via "set remote X-packet") | |
829 | dictates whether downloads are sent in binary (via the 'X' packet). | |
830 | We assume that the stub can, and attempt to do it. This will be | |
831 | cleared if the stub does not understand it. This switch is still | |
832 | needed, though in cases when the packet is supported in the stub, | |
833 | but the connection does not allow it (i.e., 7-bit serial connection | |
834 | only). */ | |
835 | ||
836 | static struct packet_config remote_protocol_binary_download; | |
837 | ||
9d1f7ab2 MS |
838 | /* Should we try the 'ThreadInfo' query packet? |
839 | ||
840 | This variable (NOT available to the user: auto-detect only!) | |
841 | determines whether GDB will use the new, simpler "ThreadInfo" | |
842 | query or the older, more complex syntax for thread queries. | |
843 | This is an auto-detect variable (set to true at each connect, | |
844 | and set to false when the target fails to recognize it). */ | |
845 | ||
846 | static int use_threadinfo_query; | |
847 | static int use_threadextra_query; | |
848 | ||
96baa820 JM |
849 | static void |
850 | set_remote_protocol_binary_download_cmd (char *args, | |
851 | int from_tty, | |
852 | struct cmd_list_element *c) | |
853 | { | |
d471ea57 | 854 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
855 | } |
856 | ||
857 | static void | |
858 | show_remote_protocol_binary_download_cmd (char *args, | |
859 | int from_tty) | |
860 | { | |
861 | show_packet_config_cmd (&remote_protocol_binary_download); | |
862 | } | |
863 | ||
c906108c | 864 | |
43ff13b4 JM |
865 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
866 | PTR sigint_remote_twice_token; | |
867 | PTR sigint_remote_token; | |
868 | ||
c906108c SS |
869 | /* These are pointers to hook functions that may be set in order to |
870 | modify resume/wait behavior for a particular architecture. */ | |
871 | ||
507f3c78 KB |
872 | void (*target_resume_hook) (void); |
873 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
874 | \f |
875 | ||
c5aa993b | 876 | |
c906108c SS |
877 | /* These are the threads which we last sent to the remote system. |
878 | -1 for all or -2 for not sent yet. */ | |
879 | static int general_thread; | |
cce74817 | 880 | static int continue_thread; |
c906108c SS |
881 | |
882 | /* Call this function as a result of | |
883 | 1) A halt indication (T packet) containing a thread id | |
884 | 2) A direct query of currthread | |
885 | 3) Successful execution of set thread | |
886 | */ | |
887 | ||
888 | static void | |
fba45db2 | 889 | record_currthread (int currthread) |
c906108c | 890 | { |
c906108c | 891 | general_thread = currthread; |
cce74817 | 892 | |
c906108c SS |
893 | /* If this is a new thread, add it to GDB's thread list. |
894 | If we leave it up to WFI to do this, bad things will happen. */ | |
895 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
896 | { |
897 | add_thread (currthread); | |
8b93c638 JM |
898 | #ifdef UI_OUT |
899 | ui_out_text (uiout, "[New "); | |
900 | ui_out_text (uiout, target_pid_to_str (currthread)); | |
901 | ui_out_text (uiout, "]\n"); | |
902 | #else | |
0f71a2f6 | 903 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); |
8b93c638 | 904 | #endif |
0f71a2f6 | 905 | } |
c906108c SS |
906 | } |
907 | ||
908 | #define MAGIC_NULL_PID 42000 | |
909 | ||
910 | static void | |
fba45db2 | 911 | set_thread (int th, int gen) |
c906108c | 912 | { |
085dd6e6 | 913 | char *buf = alloca (PBUFSIZ); |
cce74817 | 914 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
915 | |
916 | if (state == th) | |
917 | return; | |
918 | ||
919 | buf[0] = 'H'; | |
920 | buf[1] = gen ? 'g' : 'c'; | |
921 | if (th == MAGIC_NULL_PID) | |
922 | { | |
923 | buf[2] = '0'; | |
924 | buf[3] = '\0'; | |
925 | } | |
926 | else if (th < 0) | |
927 | sprintf (&buf[2], "-%x", -th); | |
928 | else | |
929 | sprintf (&buf[2], "%x", th); | |
930 | putpkt (buf); | |
c2d11a7d | 931 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 932 | if (gen) |
c5aa993b | 933 | general_thread = th; |
c906108c | 934 | else |
cce74817 | 935 | continue_thread = th; |
c906108c SS |
936 | } |
937 | \f | |
938 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
939 | ||
940 | static int | |
fba45db2 | 941 | remote_thread_alive (int tid) |
c906108c | 942 | { |
cce74817 | 943 | char buf[16]; |
c906108c | 944 | |
cce74817 JM |
945 | if (tid < 0) |
946 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 947 | else |
cce74817 | 948 | sprintf (buf, "T%08x", tid); |
c906108c | 949 | putpkt (buf); |
c2d11a7d | 950 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
951 | return (buf[0] == 'O' && buf[1] == 'K'); |
952 | } | |
953 | ||
954 | /* About these extended threadlist and threadinfo packets. They are | |
955 | variable length packets but, the fields within them are often fixed | |
956 | length. They are redundent enough to send over UDP as is the | |
957 | remote protocol in general. There is a matching unit test module | |
958 | in libstub. */ | |
959 | ||
cce74817 JM |
960 | #define OPAQUETHREADBYTES 8 |
961 | ||
962 | /* a 64 bit opaque identifier */ | |
963 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
964 | ||
965 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
966 | protocol encoding, and remote.c. it is not particularly changable */ | |
967 | ||
968 | /* Right now, the internal structure is int. We want it to be bigger. | |
969 | Plan to fix this. | |
c5aa993b | 970 | */ |
cce74817 | 971 | |
c5aa993b | 972 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 973 | |
9d1f7ab2 | 974 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
975 | equivalint to the reply of the remote threadinfo packet */ |
976 | ||
977 | struct gdb_ext_thread_info | |
c5aa993b JM |
978 | { |
979 | threadref threadid; /* External form of thread reference */ | |
980 | int active; /* Has state interesting to GDB? , regs, stack */ | |
981 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
982 | char shortname[32]; /* To be used to name threads */ | |
983 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
984 | }; | |
cce74817 JM |
985 | |
986 | /* The volume of remote transfers can be limited by submitting | |
987 | a mask containing bits specifying the desired information. | |
988 | Use a union of these values as the 'selection' parameter to | |
989 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 990 | */ |
cce74817 JM |
991 | |
992 | #define TAG_THREADID 1 | |
993 | #define TAG_EXISTS 2 | |
994 | #define TAG_DISPLAY 4 | |
995 | #define TAG_THREADNAME 8 | |
c5aa993b | 996 | #define TAG_MOREDISPLAY 16 |
cce74817 | 997 | |
c906108c SS |
998 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
999 | ||
a14ed312 | 1000 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 1001 | |
a14ed312 | 1002 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1003 | |
a14ed312 | 1004 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1005 | |
a14ed312 | 1006 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1007 | |
a14ed312 | 1008 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1009 | |
a14ed312 | 1010 | static char *pack_int (char *buf, int value); |
cce74817 | 1011 | |
a14ed312 | 1012 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1013 | |
a14ed312 | 1014 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1015 | |
a14ed312 | 1016 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1017 | |
a14ed312 | 1018 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1019 | |
a14ed312 | 1020 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1021 | |
a14ed312 | 1022 | static int threadref_to_int (threadref * ref); |
cce74817 | 1023 | |
a14ed312 | 1024 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1025 | |
a14ed312 | 1026 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1027 | |
a14ed312 | 1028 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1029 | |
a14ed312 KB |
1030 | static int remote_unpack_thread_info_response (char *pkt, |
1031 | threadref * expectedref, | |
1032 | struct gdb_ext_thread_info | |
1033 | *info); | |
cce74817 JM |
1034 | |
1035 | ||
a14ed312 KB |
1036 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1037 | struct gdb_ext_thread_info *info); | |
cce74817 | 1038 | |
a14ed312 KB |
1039 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1040 | int selection, | |
1041 | struct gdb_ext_thread_info *info); | |
cce74817 | 1042 | |
a14ed312 KB |
1043 | static char *pack_threadlist_request (char *pkt, int startflag, |
1044 | int threadcount, | |
1045 | threadref * nextthread); | |
cce74817 | 1046 | |
a14ed312 KB |
1047 | static int parse_threadlist_response (char *pkt, |
1048 | int result_limit, | |
1049 | threadref * original_echo, | |
1050 | threadref * resultlist, int *doneflag); | |
cce74817 | 1051 | |
a14ed312 KB |
1052 | static int remote_get_threadlist (int startflag, |
1053 | threadref * nextthread, | |
1054 | int result_limit, | |
1055 | int *done, | |
1056 | int *result_count, threadref * threadlist); | |
cce74817 | 1057 | |
c5aa993b | 1058 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1059 | |
a14ed312 KB |
1060 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1061 | void *context, int looplimit); | |
cce74817 | 1062 | |
a14ed312 | 1063 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1064 | |
c906108c SS |
1065 | /* encode 64 bits in 16 chars of hex */ |
1066 | ||
1067 | static const char hexchars[] = "0123456789abcdef"; | |
1068 | ||
1069 | static int | |
fba45db2 | 1070 | ishex (int ch, int *val) |
c906108c SS |
1071 | { |
1072 | if ((ch >= 'a') && (ch <= 'f')) | |
1073 | { | |
1074 | *val = ch - 'a' + 10; | |
1075 | return 1; | |
1076 | } | |
1077 | if ((ch >= 'A') && (ch <= 'F')) | |
1078 | { | |
1079 | *val = ch - 'A' + 10; | |
1080 | return 1; | |
1081 | } | |
1082 | if ((ch >= '0') && (ch <= '9')) | |
1083 | { | |
1084 | *val = ch - '0'; | |
1085 | return 1; | |
1086 | } | |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | static int | |
fba45db2 | 1091 | stubhex (int ch) |
c906108c SS |
1092 | { |
1093 | if (ch >= 'a' && ch <= 'f') | |
1094 | return ch - 'a' + 10; | |
1095 | if (ch >= '0' && ch <= '9') | |
1096 | return ch - '0'; | |
1097 | if (ch >= 'A' && ch <= 'F') | |
1098 | return ch - 'A' + 10; | |
1099 | return -1; | |
1100 | } | |
1101 | ||
1102 | static int | |
fba45db2 | 1103 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1104 | { |
1105 | int nibble; | |
1106 | int retval = 0; | |
1107 | ||
1108 | while (fieldlength) | |
1109 | { | |
1110 | nibble = stubhex (*buff++); | |
1111 | retval |= nibble; | |
1112 | fieldlength--; | |
1113 | if (fieldlength) | |
1114 | retval = retval << 4; | |
1115 | } | |
1116 | return retval; | |
1117 | } | |
1118 | ||
1119 | char * | |
fba45db2 KB |
1120 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1121 | int *result) | |
c906108c SS |
1122 | { |
1123 | int nibble; | |
1124 | int retval = 0; | |
1125 | ||
1126 | while (ishex (*buff, &nibble)) | |
1127 | { | |
1128 | buff++; | |
1129 | retval = retval << 4; | |
1130 | retval |= nibble & 0x0f; | |
1131 | } | |
1132 | *result = retval; | |
1133 | return buff; | |
1134 | } | |
1135 | ||
1136 | static char * | |
fba45db2 | 1137 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1138 | { |
1139 | ishex (*buf++, val); | |
1140 | return buf; | |
1141 | } | |
1142 | ||
1143 | static char * | |
fba45db2 | 1144 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1145 | { |
1146 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1147 | return buf; | |
1148 | } | |
1149 | ||
1150 | static char * | |
fba45db2 | 1151 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1152 | { |
1153 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1154 | *pkt++ = hexchars[(byte & 0xf)]; | |
1155 | return pkt; | |
1156 | } | |
1157 | ||
1158 | static char * | |
fba45db2 | 1159 | unpack_byte (char *buf, int *value) |
c906108c SS |
1160 | { |
1161 | *value = stub_unpack_int (buf, 2); | |
1162 | return buf + 2; | |
1163 | } | |
1164 | ||
1165 | static char * | |
fba45db2 | 1166 | pack_int (char *buf, int value) |
c906108c SS |
1167 | { |
1168 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1169 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1170 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1171 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1172 | return buf; | |
1173 | } | |
1174 | ||
1175 | static char * | |
fba45db2 | 1176 | unpack_int (char *buf, int *value) |
c906108c SS |
1177 | { |
1178 | *value = stub_unpack_int (buf, 8); | |
1179 | return buf + 8; | |
1180 | } | |
1181 | ||
c5aa993b | 1182 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1183 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1184 | |
1185 | static char * | |
fba45db2 | 1186 | pack_string (char *pkt, char *string) |
c906108c SS |
1187 | { |
1188 | char ch; | |
1189 | int len; | |
1190 | ||
1191 | len = strlen (string); | |
1192 | if (len > 200) | |
1193 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1194 | pkt = pack_hex_byte (pkt, len); | |
1195 | while (len-- > 0) | |
1196 | { | |
1197 | ch = *string++; | |
1198 | if ((ch == '\0') || (ch == '#')) | |
1199 | ch = '*'; /* Protect encapsulation */ | |
1200 | *pkt++ = ch; | |
1201 | } | |
1202 | return pkt; | |
1203 | } | |
1204 | #endif /* 0 (unused) */ | |
1205 | ||
1206 | static char * | |
fba45db2 | 1207 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1208 | { |
1209 | while (length--) | |
1210 | *dest++ = *src++; | |
1211 | *dest = '\0'; | |
1212 | return src; | |
1213 | } | |
1214 | ||
1215 | static char * | |
fba45db2 | 1216 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1217 | { |
1218 | char *limit; | |
1219 | unsigned char *altid; | |
1220 | ||
1221 | altid = (unsigned char *) id; | |
1222 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1223 | while (pkt < limit) | |
1224 | pkt = pack_hex_byte (pkt, *altid++); | |
1225 | return pkt; | |
1226 | } | |
1227 | ||
1228 | ||
1229 | static char * | |
fba45db2 | 1230 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1231 | { |
1232 | char *altref; | |
1233 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1234 | int x, y; | |
1235 | ||
1236 | altref = (char *) id; | |
1237 | ||
1238 | while (inbuf < limit) | |
1239 | { | |
1240 | x = stubhex (*inbuf++); | |
1241 | y = stubhex (*inbuf++); | |
1242 | *altref++ = (x << 4) | y; | |
1243 | } | |
1244 | return inbuf; | |
1245 | } | |
1246 | ||
1247 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1248 | ints. This is due to a mismatch of specifications. We would like | |
1249 | to use 64bit thread references internally. This is an adapter | |
1250 | function. */ | |
1251 | ||
1252 | void | |
fba45db2 | 1253 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1254 | { |
1255 | unsigned char *scan; | |
1256 | ||
1257 | scan = (unsigned char *) id; | |
1258 | { | |
1259 | int i = 4; | |
1260 | while (i--) | |
1261 | *scan++ = 0; | |
1262 | } | |
1263 | *scan++ = (value >> 24) & 0xff; | |
1264 | *scan++ = (value >> 16) & 0xff; | |
1265 | *scan++ = (value >> 8) & 0xff; | |
1266 | *scan++ = (value & 0xff); | |
1267 | } | |
1268 | ||
1269 | static int | |
fba45db2 | 1270 | threadref_to_int (threadref *ref) |
c906108c SS |
1271 | { |
1272 | int i, value = 0; | |
1273 | unsigned char *scan; | |
1274 | ||
1275 | scan = (char *) ref; | |
1276 | scan += 4; | |
1277 | i = 4; | |
1278 | while (i-- > 0) | |
1279 | value = (value << 8) | ((*scan++) & 0xff); | |
1280 | return value; | |
1281 | } | |
1282 | ||
1283 | static void | |
fba45db2 | 1284 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1285 | { |
1286 | int i; | |
1287 | unsigned char *csrc, *cdest; | |
1288 | ||
1289 | csrc = (unsigned char *) src; | |
1290 | cdest = (unsigned char *) dest; | |
1291 | i = 8; | |
1292 | while (i--) | |
1293 | *cdest++ = *csrc++; | |
1294 | } | |
1295 | ||
1296 | static int | |
fba45db2 | 1297 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1298 | { |
1299 | /* things are broken right now, so just assume we got a match */ | |
1300 | #if 0 | |
1301 | unsigned char *srcp, *destp; | |
1302 | int i, result; | |
1303 | srcp = (char *) src; | |
1304 | destp = (char *) dest; | |
1305 | ||
1306 | result = 1; | |
1307 | while (i-- > 0) | |
1308 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1309 | return result; | |
1310 | #endif | |
1311 | return 1; | |
1312 | } | |
1313 | ||
1314 | /* | |
c5aa993b JM |
1315 | threadid:1, # always request threadid |
1316 | context_exists:2, | |
1317 | display:4, | |
1318 | unique_name:8, | |
1319 | more_display:16 | |
1320 | */ | |
c906108c SS |
1321 | |
1322 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1323 | ||
1324 | static char * | |
fba45db2 | 1325 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1326 | { |
1327 | *pkt++ = 'q'; /* Info Query */ | |
1328 | *pkt++ = 'P'; /* process or thread info */ | |
1329 | pkt = pack_int (pkt, mode); /* mode */ | |
1330 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1331 | *pkt = '\0'; /* terminate */ | |
1332 | return pkt; | |
1333 | } | |
1334 | ||
1335 | /* These values tag the fields in a thread info response packet */ | |
1336 | /* Tagging the fields allows us to request specific fields and to | |
1337 | add more fields as time goes by */ | |
1338 | ||
c5aa993b JM |
1339 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1340 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1341 | fetch registers and its stack */ | |
1342 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1343 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1344 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1345 | the process */ | |
c906108c SS |
1346 | |
1347 | static int | |
fba45db2 KB |
1348 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1349 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1350 | { |
1351 | int mask, length; | |
1352 | unsigned int tag; | |
1353 | threadref ref; | |
c5aa993b | 1354 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1355 | int retval = 1; |
1356 | ||
1357 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1358 | info->active = 0; | |
1359 | info->display[0] = '\0'; | |
1360 | info->shortname[0] = '\0'; | |
1361 | info->more_display[0] = '\0'; | |
1362 | ||
1363 | /* Assume the characters indicating the packet type have been stripped */ | |
1364 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1365 | pkt = unpack_threadid (pkt, &ref); | |
1366 | ||
1367 | if (mask == 0) | |
1368 | warning ("Incomplete response to threadinfo request\n"); | |
1369 | if (!threadmatch (&ref, expectedref)) | |
1370 | { /* This is an answer to a different request */ | |
1371 | warning ("ERROR RMT Thread info mismatch\n"); | |
1372 | return 0; | |
1373 | } | |
1374 | copy_threadref (&info->threadid, &ref); | |
1375 | ||
1376 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1377 | ||
c5aa993b | 1378 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1379 | { |
1380 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1381 | pkt = unpack_byte (pkt, &length); /* length */ | |
1382 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1383 | { | |
1384 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1385 | retval = 0; | |
1386 | break; | |
1387 | } | |
1388 | if (tag == TAG_THREADID) | |
1389 | { | |
1390 | if (length != 16) | |
1391 | { | |
1392 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1393 | retval = 0; | |
1394 | break; | |
1395 | } | |
1396 | pkt = unpack_threadid (pkt, &ref); | |
1397 | mask = mask & ~TAG_THREADID; | |
1398 | continue; | |
1399 | } | |
1400 | if (tag == TAG_EXISTS) | |
1401 | { | |
1402 | info->active = stub_unpack_int (pkt, length); | |
1403 | pkt += length; | |
1404 | mask = mask & ~(TAG_EXISTS); | |
1405 | if (length > 8) | |
1406 | { | |
1407 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1408 | retval = 0; | |
1409 | break; | |
1410 | } | |
1411 | continue; | |
1412 | } | |
1413 | if (tag == TAG_THREADNAME) | |
1414 | { | |
1415 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1416 | mask = mask & ~TAG_THREADNAME; | |
1417 | continue; | |
1418 | } | |
1419 | if (tag == TAG_DISPLAY) | |
1420 | { | |
1421 | pkt = unpack_string (pkt, &info->display[0], length); | |
1422 | mask = mask & ~TAG_DISPLAY; | |
1423 | continue; | |
1424 | } | |
1425 | if (tag == TAG_MOREDISPLAY) | |
1426 | { | |
1427 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1428 | mask = mask & ~TAG_MOREDISPLAY; | |
1429 | continue; | |
1430 | } | |
1431 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1432 | break; /* Not a tag we know about */ | |
1433 | } | |
1434 | return retval; | |
1435 | } | |
1436 | ||
1437 | static int | |
fba45db2 KB |
1438 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1439 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1440 | { |
1441 | int result; | |
085dd6e6 | 1442 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1443 | |
1444 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1445 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1446 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1447 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1448 | info); | |
1449 | return result; | |
1450 | } | |
1451 | ||
1452 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1453 | representation of a threadid. */ | |
1454 | ||
1455 | static int | |
fba45db2 KB |
1456 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1457 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1458 | { |
1459 | threadref lclref; | |
1460 | ||
1461 | int_to_threadref (&lclref, *ref); | |
1462 | return remote_get_threadinfo (&lclref, selection, info); | |
1463 | } | |
1464 | ||
1465 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1466 | ||
1467 | static char * | |
fba45db2 KB |
1468 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1469 | threadref *nextthread) | |
c906108c SS |
1470 | { |
1471 | *pkt++ = 'q'; /* info query packet */ | |
1472 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1473 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1474 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1475 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1476 | *pkt = '\0'; | |
1477 | return pkt; | |
1478 | } | |
1479 | ||
1480 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1481 | ||
1482 | static int | |
fba45db2 KB |
1483 | parse_threadlist_response (char *pkt, int result_limit, |
1484 | threadref *original_echo, threadref *resultlist, | |
1485 | int *doneflag) | |
c906108c SS |
1486 | { |
1487 | char *limit; | |
1488 | int count, resultcount, done; | |
1489 | ||
1490 | resultcount = 0; | |
1491 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1492 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1493 | pkt = unpack_byte (pkt, &count); /* count field */ |
1494 | pkt = unpack_nibble (pkt, &done); | |
1495 | /* The first threadid is the argument threadid. */ | |
1496 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1497 | while ((count-- > 0) && (pkt < limit)) | |
1498 | { | |
1499 | pkt = unpack_threadid (pkt, resultlist++); | |
1500 | if (resultcount++ >= result_limit) | |
1501 | break; | |
1502 | } | |
1503 | if (doneflag) | |
1504 | *doneflag = done; | |
1505 | return resultcount; | |
1506 | } | |
1507 | ||
1508 | static int | |
fba45db2 KB |
1509 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1510 | int *done, int *result_count, threadref *threadlist) | |
c906108c SS |
1511 | { |
1512 | static threadref echo_nextthread; | |
085dd6e6 JM |
1513 | char *threadlist_packet = alloca (PBUFSIZ); |
1514 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1515 | int result = 1; |
1516 | ||
1517 | /* Trancate result limit to be smaller than the packet size */ | |
1518 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1519 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1520 | ||
1521 | pack_threadlist_request (threadlist_packet, | |
1522 | startflag, result_limit, nextthread); | |
1523 | putpkt (threadlist_packet); | |
c2d11a7d | 1524 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1525 | |
1526 | *result_count = | |
1527 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1528 | threadlist, done); | |
1529 | ||
1530 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1531 | { | |
1532 | /* FIXME: This is a good reason to drop the packet */ | |
1533 | /* Possably, there is a duplicate response */ | |
1534 | /* Possabilities : | |
1535 | retransmit immediatly - race conditions | |
1536 | retransmit after timeout - yes | |
1537 | exit | |
1538 | wait for packet, then exit | |
1539 | */ | |
1540 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1541 | return 0; /* I choose simply exiting */ | |
1542 | } | |
1543 | if (*result_count <= 0) | |
1544 | { | |
1545 | if (*done != 1) | |
1546 | { | |
1547 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1548 | result = 0; | |
1549 | } | |
1550 | return result; /* break; */ | |
1551 | } | |
1552 | if (*result_count > result_limit) | |
1553 | { | |
1554 | *result_count = 0; | |
1555 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1556 | return 0; | |
1557 | } | |
1558 | return result; | |
1559 | } | |
1560 | ||
1561 | /* This is the interface between remote and threads, remotes upper interface */ | |
1562 | ||
1563 | /* remote_find_new_threads retrieves the thread list and for each | |
1564 | thread in the list, looks up the thread in GDB's internal list, | |
1565 | ading the thread if it does not already exist. This involves | |
1566 | getting partial thread lists from the remote target so, polling the | |
1567 | quit_flag is required. */ | |
1568 | ||
1569 | ||
1570 | /* About this many threadisds fit in a packet. */ | |
1571 | ||
1572 | #define MAXTHREADLISTRESULTS 32 | |
1573 | ||
1574 | static int | |
fba45db2 KB |
1575 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1576 | int looplimit) | |
c906108c SS |
1577 | { |
1578 | int done, i, result_count; | |
1579 | int startflag = 1; | |
1580 | int result = 1; | |
1581 | int loopcount = 0; | |
1582 | static threadref nextthread; | |
1583 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1584 | ||
1585 | done = 0; | |
1586 | while (!done) | |
1587 | { | |
1588 | if (loopcount++ > looplimit) | |
1589 | { | |
1590 | result = 0; | |
1591 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1592 | break; | |
1593 | } | |
1594 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1595 | &done, &result_count, resultthreadlist)) | |
1596 | { | |
1597 | result = 0; | |
1598 | break; | |
1599 | } | |
1600 | /* clear for later iterations */ | |
1601 | startflag = 0; | |
1602 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1603 | if (result_count >= 1) | |
1604 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1605 | i = 0; | |
1606 | while (result_count--) | |
1607 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1608 | break; | |
1609 | } | |
1610 | return result; | |
1611 | } | |
1612 | ||
1613 | static int | |
fba45db2 | 1614 | remote_newthread_step (threadref *ref, void *context) |
c906108c SS |
1615 | { |
1616 | int pid; | |
1617 | ||
1618 | pid = threadref_to_int (ref); | |
1619 | if (!in_thread_list (pid)) | |
1620 | add_thread (pid); | |
1621 | return 1; /* continue iterator */ | |
1622 | } | |
1623 | ||
1624 | #define CRAZY_MAX_THREADS 1000 | |
1625 | ||
1626 | static int | |
fba45db2 | 1627 | remote_current_thread (int oldpid) |
c906108c | 1628 | { |
085dd6e6 | 1629 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1630 | |
1631 | putpkt ("qC"); | |
c2d11a7d | 1632 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1633 | if (buf[0] == 'Q' && buf[1] == 'C') |
1634 | return strtol (&buf[2], NULL, 16); | |
1635 | else | |
1636 | return oldpid; | |
1637 | } | |
1638 | ||
9d1f7ab2 MS |
1639 | /* Find new threads for info threads command. |
1640 | * Original version, using John Metzler's thread protocol. | |
1641 | */ | |
cce74817 JM |
1642 | |
1643 | static void | |
fba45db2 | 1644 | remote_find_new_threads (void) |
c906108c | 1645 | { |
c5aa993b JM |
1646 | remote_threadlist_iterator (remote_newthread_step, 0, |
1647 | CRAZY_MAX_THREADS); | |
c906108c SS |
1648 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1649 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1650 | } |
1651 | ||
9d1f7ab2 MS |
1652 | /* |
1653 | * Find all threads for info threads command. | |
1654 | * Uses new thread protocol contributed by Cisco. | |
1655 | * Falls back and attempts to use the older method (above) | |
1656 | * if the target doesn't respond to the new method. | |
1657 | */ | |
1658 | ||
0f71a2f6 JM |
1659 | static void |
1660 | remote_threads_info (void) | |
1661 | { | |
085dd6e6 JM |
1662 | char *buf = alloca (PBUFSIZ); |
1663 | char *bufp; | |
0f71a2f6 JM |
1664 | int tid; |
1665 | ||
1666 | if (remote_desc == 0) /* paranoia */ | |
1667 | error ("Command can only be used when connected to the remote target."); | |
1668 | ||
9d1f7ab2 MS |
1669 | if (use_threadinfo_query) |
1670 | { | |
1671 | putpkt ("qfThreadInfo"); | |
1672 | bufp = buf; | |
1673 | getpkt (bufp, PBUFSIZ, 0); | |
1674 | if (bufp[0] != '\0') /* q packet recognized */ | |
1675 | { | |
1676 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1677 | { | |
1678 | do | |
1679 | { | |
1680 | tid = strtol (bufp, &bufp, 16); | |
1681 | if (tid != 0 && !in_thread_list (tid)) | |
1682 | add_thread (tid); | |
1683 | } | |
1684 | while (*bufp++ == ','); /* comma-separated list */ | |
1685 | putpkt ("qsThreadInfo"); | |
1686 | bufp = buf; | |
1687 | getpkt (bufp, PBUFSIZ, 0); | |
1688 | } | |
1689 | return; /* done */ | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | /* Else fall back to old method based on jmetzler protocol. */ | |
1694 | use_threadinfo_query = 0; | |
1695 | remote_find_new_threads (); | |
1696 | return; | |
1697 | } | |
1698 | ||
1699 | /* | |
1700 | * Collect a descriptive string about the given thread. | |
1701 | * The target may say anything it wants to about the thread | |
1702 | * (typically info about its blocked / runnable state, name, etc.). | |
1703 | * This string will appear in the info threads display. | |
1704 | * | |
1705 | * Optional: targets are not required to implement this function. | |
1706 | */ | |
1707 | ||
1708 | static char * | |
1709 | remote_threads_extra_info (struct thread_info *tp) | |
1710 | { | |
1711 | int result; | |
1712 | int set; | |
1713 | threadref id; | |
1714 | struct gdb_ext_thread_info threadinfo; | |
1715 | static char display_buf[100]; /* arbitrary... */ | |
1716 | char *bufp = alloca (PBUFSIZ); | |
1717 | int n = 0; /* position in display_buf */ | |
1718 | ||
1719 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1720 | internal_error (__FILE__, __LINE__, |
1721 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1722 | |
1723 | if (use_threadextra_query) | |
1724 | { | |
480ff1fb | 1725 | sprintf (bufp, "qThreadExtraInfo,%x", tp->pid); |
9d1f7ab2 MS |
1726 | putpkt (bufp); |
1727 | getpkt (bufp, PBUFSIZ, 0); | |
1728 | if (bufp[0] != 0) | |
1729 | { | |
1730 | char *p; | |
1731 | ||
1732 | for (p = display_buf; | |
1733 | p < display_buf + sizeof(display_buf) - 1 && | |
1734 | bufp[0] != 0 && | |
1735 | bufp[1] != 0; | |
1736 | p++, bufp+=2) | |
1737 | { | |
1738 | *p = fromhex (bufp[0]) * 16 + fromhex (bufp[1]); | |
1739 | } | |
1740 | *p = 0; | |
1741 | return display_buf; | |
1742 | } | |
0f71a2f6 | 1743 | } |
9d1f7ab2 MS |
1744 | |
1745 | /* If the above query fails, fall back to the old method. */ | |
1746 | use_threadextra_query = 0; | |
1747 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1748 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
1749 | int_to_threadref (&id, tp->pid); | |
1750 | if (remote_get_threadinfo (&id, set, &threadinfo)) | |
1751 | if (threadinfo.active) | |
0f71a2f6 | 1752 | { |
9d1f7ab2 MS |
1753 | if (*threadinfo.shortname) |
1754 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1755 | if (*threadinfo.display) | |
1756 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1757 | if (*threadinfo.more_display) | |
1758 | n += sprintf(&display_buf[n], " Priority: %s", | |
1759 | threadinfo.more_display); | |
1760 | ||
1761 | if (n > 0) | |
c5aa993b | 1762 | { |
9d1f7ab2 MS |
1763 | /* for purely cosmetic reasons, clear up trailing commas */ |
1764 | if (',' == display_buf[n-1]) | |
1765 | display_buf[n-1] = ' '; | |
1766 | return display_buf; | |
c5aa993b | 1767 | } |
0f71a2f6 | 1768 | } |
9d1f7ab2 | 1769 | return NULL; |
0f71a2f6 | 1770 | } |
9d1f7ab2 | 1771 | |
c906108c | 1772 | \f |
c5aa993b | 1773 | |
c906108c SS |
1774 | /* Restart the remote side; this is an extended protocol operation. */ |
1775 | ||
1776 | static void | |
fba45db2 | 1777 | extended_remote_restart (void) |
c906108c | 1778 | { |
085dd6e6 | 1779 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1780 | |
1781 | /* Send the restart command; for reasons I don't understand the | |
1782 | remote side really expects a number after the "R". */ | |
1783 | buf[0] = 'R'; | |
1784 | sprintf (&buf[1], "%x", 0); | |
1785 | putpkt (buf); | |
1786 | ||
1787 | /* Now query for status so this looks just like we restarted | |
1788 | gdbserver from scratch. */ | |
1789 | putpkt ("?"); | |
c2d11a7d | 1790 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1791 | } |
1792 | \f | |
1793 | /* Clean up connection to a remote debugger. */ | |
1794 | ||
1795 | /* ARGSUSED */ | |
1796 | static void | |
fba45db2 | 1797 | remote_close (int quitting) |
c906108c SS |
1798 | { |
1799 | if (remote_desc) | |
1800 | SERIAL_CLOSE (remote_desc); | |
1801 | remote_desc = NULL; | |
1802 | } | |
1803 | ||
1804 | /* Query the remote side for the text, data and bss offsets. */ | |
1805 | ||
1806 | static void | |
fba45db2 | 1807 | get_offsets (void) |
c906108c | 1808 | { |
085dd6e6 JM |
1809 | char *buf = alloca (PBUFSIZ); |
1810 | char *ptr; | |
c906108c SS |
1811 | int lose; |
1812 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1813 | struct section_offsets *offs; | |
1814 | ||
1815 | putpkt ("qOffsets"); | |
1816 | ||
c2d11a7d | 1817 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1818 | |
1819 | if (buf[0] == '\000') | |
1820 | return; /* Return silently. Stub doesn't support | |
1821 | this command. */ | |
1822 | if (buf[0] == 'E') | |
1823 | { | |
1824 | warning ("Remote failure reply: %s", buf); | |
1825 | return; | |
1826 | } | |
1827 | ||
1828 | /* Pick up each field in turn. This used to be done with scanf, but | |
1829 | scanf will make trouble if CORE_ADDR size doesn't match | |
1830 | conversion directives correctly. The following code will work | |
1831 | with any size of CORE_ADDR. */ | |
1832 | text_addr = data_addr = bss_addr = 0; | |
1833 | ptr = buf; | |
1834 | lose = 0; | |
1835 | ||
1836 | if (strncmp (ptr, "Text=", 5) == 0) | |
1837 | { | |
1838 | ptr += 5; | |
1839 | /* Don't use strtol, could lose on big values. */ | |
1840 | while (*ptr && *ptr != ';') | |
1841 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1842 | } | |
1843 | else | |
1844 | lose = 1; | |
1845 | ||
1846 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1847 | { | |
1848 | ptr += 6; | |
1849 | while (*ptr && *ptr != ';') | |
1850 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1851 | } | |
1852 | else | |
1853 | lose = 1; | |
1854 | ||
1855 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1856 | { | |
1857 | ptr += 5; | |
1858 | while (*ptr && *ptr != ';') | |
1859 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1860 | } | |
1861 | else | |
1862 | lose = 1; | |
1863 | ||
1864 | if (lose) | |
1865 | error ("Malformed response to offset query, %s", buf); | |
1866 | ||
1867 | if (symfile_objfile == NULL) | |
1868 | return; | |
1869 | ||
d4f3574e SS |
1870 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1871 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1872 | |
a4c8257b | 1873 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1874 | |
1875 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1876 | because that's what nlmconv does now. The real solution requires changes | |
1877 | to the stub and remote.c that I don't have time to do right now. */ | |
1878 | ||
a4c8257b EZ |
1879 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1880 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1881 | |
1882 | objfile_relocate (symfile_objfile, offs); | |
1883 | } | |
1884 | ||
0f71a2f6 JM |
1885 | /* |
1886 | * Cisco version of section offsets: | |
1887 | * | |
1888 | * Instead of having GDB query the target for the section offsets, | |
1889 | * Cisco lets the target volunteer the information! It's also in | |
1890 | * a different format, so here are the functions that will decode | |
1891 | * a section offset packet from a Cisco target. | |
1892 | */ | |
1893 | ||
1894 | /* | |
1895 | * Function: remote_cisco_section_offsets | |
1896 | * | |
1897 | * Returns: zero for success, non-zero for failure | |
1898 | */ | |
1899 | ||
c5aa993b | 1900 | static int |
c2d11a7d JM |
1901 | remote_cisco_section_offsets (bfd_vma text_addr, |
1902 | bfd_vma data_addr, | |
1903 | bfd_vma bss_addr, | |
1904 | bfd_signed_vma *text_offs, | |
1905 | bfd_signed_vma *data_offs, | |
1906 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1907 | { |
1908 | bfd_vma text_base, data_base, bss_base; | |
1909 | struct minimal_symbol *start; | |
1910 | asection *sect; | |
c5aa993b | 1911 | bfd *abfd; |
0f71a2f6 | 1912 | int len; |
0f71a2f6 JM |
1913 | |
1914 | if (symfile_objfile == NULL) | |
c5aa993b | 1915 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1916 | |
1917 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1918 | if (start == NULL) | |
c5aa993b | 1919 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1920 | |
1921 | data_base = bss_base = 0; | |
1922 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1923 | ||
1924 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1925 | for (sect = abfd->sections; |
0f71a2f6 JM |
1926 | sect != 0; |
1927 | sect = sect->next) | |
1928 | { | |
ce359b09 | 1929 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1930 | len = strlen (p); |
1931 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1932 | if (data_base == 0 || | |
1933 | data_base > bfd_get_section_vma (abfd, sect)) | |
1934 | data_base = bfd_get_section_vma (abfd, sect); | |
1935 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1936 | if (bss_base == 0 || |
0f71a2f6 JM |
1937 | bss_base > bfd_get_section_vma (abfd, sect)) |
1938 | bss_base = bfd_get_section_vma (abfd, sect); | |
1939 | } | |
1940 | *text_offs = text_addr - text_base; | |
1941 | *data_offs = data_addr - data_base; | |
c5aa993b | 1942 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1943 | if (remote_debug) |
1944 | { | |
1945 | char tmp[128]; | |
1946 | ||
1947 | sprintf (tmp, "VMA: text = 0x"); | |
1948 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1949 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1950 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1951 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1952 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1953 | fprintf_filtered (gdb_stdlog, tmp); | |
1954 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1955 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1956 | paddr_nz (*text_offs), | |
1957 | paddr_nz (*data_offs), | |
1958 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1959 | } |
1960 | ||
1961 | return 0; | |
1962 | } | |
1963 | ||
1964 | /* | |
1965 | * Function: remote_cisco_objfile_relocate | |
1966 | * | |
1967 | * Relocate the symbol file for a remote target. | |
1968 | */ | |
1969 | ||
96baa820 | 1970 | void |
fba45db2 KB |
1971 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
1972 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
1973 | { |
1974 | struct section_offsets *offs; | |
1975 | ||
c5aa993b | 1976 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1977 | { |
1978 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1979 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1980 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1981 | |
d4f3574e SS |
1982 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1983 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 1984 | |
a4c8257b EZ |
1985 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
1986 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
1987 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
1988 | |
1989 | /* First call the standard objfile_relocate. */ | |
1990 | objfile_relocate (symfile_objfile, offs); | |
1991 | ||
1992 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1993 | the exec target. These entries will control memory transfers |
1994 | from the exec file. */ | |
0f71a2f6 JM |
1995 | |
1996 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1997 | } | |
1998 | } | |
1999 | ||
c906108c SS |
2000 | /* Stub for catch_errors. */ |
2001 | ||
0f71a2f6 | 2002 | static int |
c2d11a7d | 2003 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
2004 | { |
2005 | start_remote (); /* Initialize gdb process mechanisms */ | |
2006 | return 1; | |
2007 | } | |
2008 | ||
c906108c | 2009 | static int |
fba45db2 | 2010 | remote_start_remote (PTR dummy) |
c906108c | 2011 | { |
8edbea78 | 2012 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2013 | |
2014 | /* Ack any packet which the remote side has already sent. */ | |
2015 | SERIAL_WRITE (remote_desc, "+", 1); | |
2016 | ||
2017 | /* Let the stub know that we want it to return the thread. */ | |
2018 | set_thread (-1, 0); | |
2019 | ||
2020 | inferior_pid = remote_current_thread (inferior_pid); | |
2021 | ||
2022 | get_offsets (); /* Get text, data & bss offsets */ | |
2023 | ||
2024 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2025 | immediate_quit--; |
c906108c | 2026 | |
0f71a2f6 | 2027 | return remote_start_remote_dummy (dummy); |
c906108c SS |
2028 | } |
2029 | ||
2030 | /* Open a connection to a remote debugger. | |
2031 | NAME is the filename used for communication. */ | |
2032 | ||
2033 | static void | |
fba45db2 | 2034 | remote_open (char *name, int from_tty) |
c906108c SS |
2035 | { |
2036 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2037 | } | |
2038 | ||
43ff13b4 JM |
2039 | /* Just like remote_open, but with asynchronous support. */ |
2040 | static void | |
fba45db2 | 2041 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2042 | { |
2043 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2044 | } | |
2045 | ||
c906108c SS |
2046 | /* Open a connection to a remote debugger using the extended |
2047 | remote gdb protocol. NAME is the filename used for communication. */ | |
2048 | ||
2049 | static void | |
fba45db2 | 2050 | extended_remote_open (char *name, int from_tty) |
c906108c | 2051 | { |
c5aa993b | 2052 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2053 | } |
2054 | ||
43ff13b4 JM |
2055 | /* Just like extended_remote_open, but with asynchronous support. */ |
2056 | static void | |
fba45db2 | 2057 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2058 | { |
c5aa993b | 2059 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2060 | } |
2061 | ||
c906108c SS |
2062 | /* Generic code for opening a connection to a remote target. */ |
2063 | ||
d471ea57 AC |
2064 | static void |
2065 | init_all_packet_configs (void) | |
2066 | { | |
2067 | int i; | |
44eaed12 C |
2068 | update_packet_config (&remote_protocol_e); |
2069 | update_packet_config (&remote_protocol_E); | |
d471ea57 AC |
2070 | update_packet_config (&remote_protocol_P); |
2071 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
2072 | update_packet_config (&remote_protocol_Z[i]); | |
2073 | /* Force remote_write_bytes to check whether target supports binary | |
2074 | downloading. */ | |
2075 | update_packet_config (&remote_protocol_binary_download); | |
2076 | } | |
2077 | ||
c906108c | 2078 | static void |
fba45db2 KB |
2079 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2080 | int extended_p) | |
c906108c SS |
2081 | { |
2082 | if (name == 0) | |
2083 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2084 | serial device is attached to the remote system\n\ |
2085 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2086 | |
6426a772 JM |
2087 | /* See FIXME above */ |
2088 | wait_forever_enabled_p = 1; | |
2089 | ||
c906108c SS |
2090 | target_preopen (from_tty); |
2091 | ||
2092 | unpush_target (target); | |
2093 | ||
c906108c SS |
2094 | remote_desc = SERIAL_OPEN (name); |
2095 | if (!remote_desc) | |
2096 | perror_with_name (name); | |
2097 | ||
2098 | if (baud_rate != -1) | |
2099 | { | |
2100 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2101 | { | |
2102 | SERIAL_CLOSE (remote_desc); | |
2103 | perror_with_name (name); | |
2104 | } | |
2105 | } | |
2106 | ||
c906108c SS |
2107 | SERIAL_RAW (remote_desc); |
2108 | ||
2109 | /* If there is something sitting in the buffer we might take it as a | |
2110 | response to a command, which would be bad. */ | |
2111 | SERIAL_FLUSH_INPUT (remote_desc); | |
2112 | ||
2113 | if (from_tty) | |
2114 | { | |
2115 | puts_filtered ("Remote debugging using "); | |
2116 | puts_filtered (name); | |
2117 | puts_filtered ("\n"); | |
2118 | } | |
c5aa993b | 2119 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2120 | |
d471ea57 | 2121 | init_all_packet_configs (); |
96baa820 | 2122 | |
c5aa993b | 2123 | general_thread = -2; |
cce74817 | 2124 | continue_thread = -2; |
c906108c | 2125 | |
9d1f7ab2 MS |
2126 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2127 | use_threadinfo_query = 1; | |
2128 | use_threadextra_query = 1; | |
2129 | ||
c906108c SS |
2130 | /* Without this, some commands which require an active target (such |
2131 | as kill) won't work. This variable serves (at least) double duty | |
2132 | as both the pid of the target process (if it has such), and as a | |
2133 | flag indicating that a target is active. These functions should | |
2134 | be split out into seperate variables, especially since GDB will | |
2135 | someday have a notion of debugging several processes. */ | |
2136 | ||
2137 | inferior_pid = MAGIC_NULL_PID; | |
2138 | /* Start the remote connection; if error (0), discard this target. | |
2139 | In particular, if the user quits, be sure to discard it | |
2140 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2141 | if (!catch_errors (remote_start_remote, NULL, |
2142 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2143 | RETURN_MASK_ALL)) |
2144 | { | |
2145 | pop_target (); | |
2146 | return; | |
2147 | } | |
2148 | ||
2149 | if (extended_p) | |
2150 | { | |
2151 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 2152 | char *buf = alloca (PBUFSIZ); |
c906108c | 2153 | putpkt ("!"); |
c2d11a7d | 2154 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
2155 | } |
2156 | } | |
2157 | ||
43ff13b4 JM |
2158 | /* Just like remote_open but with asynchronous support. */ |
2159 | static void | |
fba45db2 KB |
2160 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2161 | int extended_p) | |
43ff13b4 JM |
2162 | { |
2163 | if (name == 0) | |
2164 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2165 | serial device is attached to the remote system\n\ |
2166 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2167 | |
2168 | target_preopen (from_tty); | |
2169 | ||
2170 | unpush_target (target); | |
2171 | ||
43ff13b4 JM |
2172 | remote_desc = SERIAL_OPEN (name); |
2173 | if (!remote_desc) | |
2174 | perror_with_name (name); | |
2175 | ||
2176 | if (baud_rate != -1) | |
2177 | { | |
2178 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2179 | { | |
2180 | SERIAL_CLOSE (remote_desc); | |
2181 | perror_with_name (name); | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | SERIAL_RAW (remote_desc); | |
2186 | ||
2187 | /* If there is something sitting in the buffer we might take it as a | |
2188 | response to a command, which would be bad. */ | |
2189 | SERIAL_FLUSH_INPUT (remote_desc); | |
2190 | ||
2191 | if (from_tty) | |
2192 | { | |
2193 | puts_filtered ("Remote debugging using "); | |
2194 | puts_filtered (name); | |
2195 | puts_filtered ("\n"); | |
2196 | } | |
2197 | ||
c5aa993b | 2198 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2199 | |
d471ea57 | 2200 | init_all_packet_configs (); |
43ff13b4 | 2201 | |
c5aa993b | 2202 | general_thread = -2; |
43ff13b4 JM |
2203 | continue_thread = -2; |
2204 | ||
9d1f7ab2 MS |
2205 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2206 | use_threadinfo_query = 1; | |
2207 | use_threadextra_query = 1; | |
2208 | ||
43ff13b4 JM |
2209 | /* Without this, some commands which require an active target (such |
2210 | as kill) won't work. This variable serves (at least) double duty | |
2211 | as both the pid of the target process (if it has such), and as a | |
2212 | flag indicating that a target is active. These functions should | |
2213 | be split out into seperate variables, especially since GDB will | |
2214 | someday have a notion of debugging several processes. */ | |
43ff13b4 | 2215 | inferior_pid = MAGIC_NULL_PID; |
6426a772 JM |
2216 | |
2217 | /* With this target we start out by owning the terminal. */ | |
2218 | remote_async_terminal_ours_p = 1; | |
2219 | ||
2220 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2221 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2222 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2223 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2224 | around this. Eventually a mechanism that allows | |
2225 | wait_for_inferior() to expect/get timeouts will be | |
2226 | implemented. */ | |
2227 | wait_forever_enabled_p = 0; | |
2228 | ||
43ff13b4 JM |
2229 | /* Start the remote connection; if error (0), discard this target. |
2230 | In particular, if the user quits, be sure to discard it | |
2231 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2232 | if (!catch_errors (remote_start_remote, NULL, |
2233 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2234 | RETURN_MASK_ALL)) |
2235 | { | |
43ff13b4 | 2236 | pop_target (); |
6426a772 | 2237 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2238 | return; |
2239 | } | |
2240 | ||
6426a772 JM |
2241 | wait_forever_enabled_p = 1; |
2242 | ||
2243 | if (extended_p) | |
43ff13b4 | 2244 | { |
6426a772 JM |
2245 | /* tell the remote that we're using the extended protocol. */ |
2246 | char *buf = alloca (PBUFSIZ); | |
2247 | putpkt ("!"); | |
c2d11a7d | 2248 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2249 | } |
43ff13b4 JM |
2250 | } |
2251 | ||
c906108c SS |
2252 | /* This takes a program previously attached to and detaches it. After |
2253 | this is done, GDB can be used to debug some other program. We | |
2254 | better not have left any breakpoints in the target program or it'll | |
2255 | die when it hits one. */ | |
2256 | ||
2257 | static void | |
fba45db2 | 2258 | remote_detach (char *args, int from_tty) |
c906108c | 2259 | { |
085dd6e6 | 2260 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2261 | |
2262 | if (args) | |
2263 | error ("Argument given to \"detach\" when remotely debugging."); | |
2264 | ||
2265 | /* Tell the remote target to detach. */ | |
2266 | strcpy (buf, "D"); | |
c2d11a7d | 2267 | remote_send (buf, PBUFSIZ); |
c906108c | 2268 | |
cca728d0 | 2269 | target_mourn_inferior (); |
c906108c SS |
2270 | if (from_tty) |
2271 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2272 | |
c906108c SS |
2273 | } |
2274 | ||
43ff13b4 JM |
2275 | /* Same as remote_detach, but with async support. */ |
2276 | static void | |
fba45db2 | 2277 | remote_async_detach (char *args, int from_tty) |
43ff13b4 JM |
2278 | { |
2279 | char *buf = alloca (PBUFSIZ); | |
2280 | ||
2281 | if (args) | |
2282 | error ("Argument given to \"detach\" when remotely debugging."); | |
2283 | ||
2284 | /* Tell the remote target to detach. */ | |
2285 | strcpy (buf, "D"); | |
c2d11a7d | 2286 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2287 | |
2288 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2289 | if (target_is_async_p ()) |
c2c6d25f | 2290 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2291 | |
cca728d0 | 2292 | target_mourn_inferior (); |
43ff13b4 JM |
2293 | if (from_tty) |
2294 | puts_filtered ("Ending remote debugging.\n"); | |
2295 | } | |
2296 | ||
c906108c SS |
2297 | /* Convert hex digit A to a number. */ |
2298 | ||
2299 | int | |
fba45db2 | 2300 | fromhex (int a) |
c906108c SS |
2301 | { |
2302 | if (a >= '0' && a <= '9') | |
2303 | return a - '0'; | |
2304 | else if (a >= 'a' && a <= 'f') | |
2305 | return a - 'a' + 10; | |
2306 | else if (a >= 'A' && a <= 'F') | |
2307 | return a - 'A' + 10; | |
c5aa993b | 2308 | else |
c906108c SS |
2309 | error ("Reply contains invalid hex digit %d", a); |
2310 | } | |
2311 | ||
2312 | /* Convert number NIB to a hex digit. */ | |
2313 | ||
2314 | static int | |
fba45db2 | 2315 | tohex (int nib) |
c906108c SS |
2316 | { |
2317 | if (nib < 10) | |
c5aa993b | 2318 | return '0' + nib; |
c906108c | 2319 | else |
c5aa993b | 2320 | return 'a' + nib - 10; |
c906108c SS |
2321 | } |
2322 | \f | |
2323 | /* Tell the remote machine to resume. */ | |
2324 | ||
2325 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2326 | ||
2327 | static int last_sent_step; | |
2328 | ||
2329 | static void | |
fba45db2 | 2330 | remote_resume (int pid, int step, enum target_signal siggnal) |
c906108c | 2331 | { |
085dd6e6 | 2332 | char *buf = alloca (PBUFSIZ); |
44eaed12 | 2333 | char *p; |
c906108c SS |
2334 | |
2335 | if (pid == -1) | |
2336 | set_thread (0, 0); /* run any thread */ | |
2337 | else | |
2338 | set_thread (pid, 0); /* run this thread */ | |
2339 | ||
c906108c SS |
2340 | last_sent_signal = siggnal; |
2341 | last_sent_step = step; | |
2342 | ||
2343 | /* A hook for when we need to do something at the last moment before | |
2344 | resumption. */ | |
2345 | if (target_resume_hook) | |
2346 | (*target_resume_hook) (); | |
2347 | ||
44eaed12 C |
2348 | |
2349 | /* The s/S/c/C packets do not return status. So if the target does | |
2350 | not support the S or C packets, the debug agent returns an empty | |
2351 | string which is detected in remote_wait(). This protocol defect | |
2352 | is fixed in the e/E packets. */ | |
2353 | ||
2354 | if (step && step_range_end) | |
2355 | { | |
2356 | /* If the target does not support the 'E' packet, we try the 'S' | |
2357 | packet. Ideally we would fall back to the 'e' packet if that | |
2358 | too is not supported. But that would require another copy of | |
2359 | the code to issue the 'e' packet (and fall back to 's' if not | |
2360 | supported) in remote_wait(). */ | |
2361 | ||
2362 | if (siggnal != TARGET_SIGNAL_0) | |
2363 | { | |
2364 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2365 | { | |
2366 | p = buf; | |
2367 | *p++ = 'E'; | |
2368 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2369 | *p++ = tohex (((int) siggnal) & 0xf); | |
2370 | *p++ = ','; | |
2371 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2372 | *p++ = ','; | |
2373 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2374 | *p++ = 0; | |
2375 | ||
2376 | putpkt (buf); | |
2377 | getpkt (buf, PBUFSIZ, 0); | |
2378 | ||
2379 | if (packet_ok(buf, &remote_protocol_E) == PACKET_OK) | |
2380 | return; | |
2381 | } | |
2382 | } | |
2383 | else | |
2384 | { | |
2385 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2386 | { | |
2387 | p = buf; | |
2388 | *p++ = 'e'; | |
2389 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2390 | *p++ = ','; | |
2391 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2392 | *p++ = 0; | |
2393 | ||
2394 | putpkt (buf); | |
2395 | getpkt (buf, PBUFSIZ, 0); | |
2396 | ||
2397 | if (packet_ok(buf, &remote_protocol_e) == PACKET_OK) | |
2398 | return; | |
2399 | } | |
2400 | } | |
2401 | } | |
2402 | ||
c906108c SS |
2403 | if (siggnal != TARGET_SIGNAL_0) |
2404 | { | |
2405 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2406 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2407 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2408 | buf[3] = '\0'; |
2409 | } | |
2410 | else | |
c5aa993b | 2411 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2412 | |
2413 | putpkt (buf); | |
2414 | } | |
43ff13b4 JM |
2415 | |
2416 | /* Same as remote_resume, but with async support. */ | |
2417 | static void | |
fba45db2 | 2418 | remote_async_resume (int pid, int step, enum target_signal siggnal) |
43ff13b4 JM |
2419 | { |
2420 | char *buf = alloca (PBUFSIZ); | |
44eaed12 | 2421 | char *p; |
43ff13b4 JM |
2422 | |
2423 | if (pid == -1) | |
2424 | set_thread (0, 0); /* run any thread */ | |
2425 | else | |
2426 | set_thread (pid, 0); /* run this thread */ | |
2427 | ||
43ff13b4 JM |
2428 | last_sent_signal = siggnal; |
2429 | last_sent_step = step; | |
2430 | ||
2431 | /* A hook for when we need to do something at the last moment before | |
2432 | resumption. */ | |
2433 | if (target_resume_hook) | |
2434 | (*target_resume_hook) (); | |
2435 | ||
44eaed12 C |
2436 | /* The s/S/c/C packets do not return status. So if the target does |
2437 | not support the S or C packets, the debug agent returns an empty | |
2438 | string which is detected in remote_wait(). This protocol defect | |
2439 | is fixed in the e/E packets. */ | |
2440 | ||
2441 | if (step && step_range_end) | |
2442 | { | |
2443 | /* If the target does not support the 'E' packet, we try the 'S' | |
2444 | packet. Ideally we would fall back to the 'e' packet if that | |
2445 | too is not supported. But that would require another copy of | |
2446 | the code to issue the 'e' packet (and fall back to 's' if not | |
2447 | supported) in remote_wait(). */ | |
2448 | ||
2449 | if (siggnal != TARGET_SIGNAL_0) | |
2450 | { | |
2451 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2452 | { | |
2453 | p = buf; | |
2454 | *p++ = 'E'; | |
2455 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2456 | *p++ = tohex (((int) siggnal) & 0xf); | |
2457 | *p++ = ','; | |
2458 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2459 | *p++ = ','; | |
2460 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2461 | *p++ = 0; | |
2462 | ||
2463 | putpkt (buf); | |
2464 | getpkt (buf, PBUFSIZ, 0); | |
2465 | ||
2466 | if (packet_ok(buf, &remote_protocol_E) == PACKET_OK) | |
2467 | goto register_event_loop; | |
2468 | } | |
2469 | } | |
2470 | else | |
2471 | { | |
2472 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2473 | { | |
2474 | p = buf; | |
2475 | *p++ = 'e'; | |
2476 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2477 | *p++ = ','; | |
2478 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2479 | *p++ = 0; | |
2480 | ||
2481 | putpkt (buf); | |
2482 | getpkt (buf, PBUFSIZ, 0); | |
2483 | ||
2484 | if (packet_ok(buf, &remote_protocol_e) == PACKET_OK) | |
2485 | goto register_event_loop; | |
2486 | } | |
2487 | } | |
2488 | } | |
2489 | ||
43ff13b4 JM |
2490 | if (siggnal != TARGET_SIGNAL_0) |
2491 | { | |
2492 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2493 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2494 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2495 | buf[3] = '\0'; |
2496 | } | |
2497 | else | |
c5aa993b | 2498 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2499 | |
2500 | putpkt (buf); | |
43ff13b4 | 2501 | |
44eaed12 | 2502 | register_event_loop: |
2acceee2 JM |
2503 | /* We are about to start executing the inferior, let's register it |
2504 | with the event loop. NOTE: this is the one place where all the | |
2505 | execution commands end up. We could alternatively do this in each | |
2506 | of the execution commands in infcmd.c.*/ | |
2507 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2508 | into infcmd.c in order to allow inferior function calls to work | |
2509 | NOT asynchronously. */ | |
ed9a39eb | 2510 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2511 | target_async (inferior_event_handler, 0); |
2512 | /* Tell the world that the target is now executing. */ | |
2513 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2514 | this? Instead, should the client of target just assume (for | |
2515 | async targets) that the target is going to start executing? Is | |
2516 | this information already found in the continuation block? */ | |
ed9a39eb | 2517 | if (target_is_async_p ()) |
2acceee2 | 2518 | target_executing = 1; |
43ff13b4 | 2519 | } |
c906108c | 2520 | \f |
43ff13b4 JM |
2521 | |
2522 | /* Set up the signal handler for SIGINT, while the target is | |
2523 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2524 | static void | |
fba45db2 | 2525 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2526 | { |
c5aa993b | 2527 | sigint_remote_token = |
43ff13b4 JM |
2528 | create_async_signal_handler (async_remote_interrupt, NULL); |
2529 | signal (SIGINT, handle_remote_sigint); | |
2530 | } | |
2531 | ||
2532 | /* Signal handler for SIGINT, while the target is executing. */ | |
2533 | static void | |
fba45db2 | 2534 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2535 | { |
2536 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2537 | sigint_remote_twice_token = |
43ff13b4 JM |
2538 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2539 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2540 | } | |
2541 | ||
2542 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2543 | sent once. It will take effect the second time that the user sends | |
2544 | a ^C. */ | |
2545 | static void | |
fba45db2 | 2546 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2547 | { |
2548 | signal (sig, handle_sigint); | |
c5aa993b | 2549 | sigint_remote_twice_token = |
2df3850c | 2550 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2551 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2552 | } | |
2553 | ||
6426a772 | 2554 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2555 | to a ^C. */ |
c5aa993b | 2556 | static void |
fba45db2 | 2557 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2558 | { |
2559 | if (remote_debug) | |
2560 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2561 | ||
2562 | target_stop (); | |
2563 | } | |
2564 | ||
2565 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2566 | up on the target alltogether. */ | |
2df3850c | 2567 | void |
fba45db2 | 2568 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2569 | { |
2df3850c JM |
2570 | if (remote_debug) |
2571 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2572 | /* Do something only if the target was not killed by the previous |
2573 | cntl-C. */ | |
2574 | if (target_executing) | |
2575 | { | |
2576 | interrupt_query (); | |
2577 | signal (SIGINT, handle_remote_sigint); | |
2578 | } | |
43ff13b4 JM |
2579 | } |
2580 | ||
2581 | /* Reinstall the usual SIGINT handlers, after the target has | |
2582 | stopped. */ | |
6426a772 JM |
2583 | static void |
2584 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2585 | { |
2586 | signal (SIGINT, handle_sigint); | |
2587 | if (sigint_remote_twice_token) | |
c2c6d25f | 2588 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2589 | if (sigint_remote_token) |
c2c6d25f | 2590 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2591 | } |
2592 | ||
c906108c SS |
2593 | /* Send ^C to target to halt it. Target will respond, and send us a |
2594 | packet. */ | |
507f3c78 | 2595 | static void (*ofunc) (int); |
c906108c | 2596 | |
7a292a7a SS |
2597 | /* The command line interface's stop routine. This function is installed |
2598 | as a signal handler for SIGINT. The first time a user requests a | |
2599 | stop, we call remote_stop to send a break or ^C. If there is no | |
2600 | response from the target (it didn't stop when the user requested it), | |
2601 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2602 | static void |
fba45db2 | 2603 | remote_interrupt (int signo) |
c906108c | 2604 | { |
7a292a7a SS |
2605 | /* If this doesn't work, try more severe steps. */ |
2606 | signal (signo, remote_interrupt_twice); | |
2607 | ||
2608 | if (remote_debug) | |
0f71a2f6 | 2609 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2610 | |
2611 | target_stop (); | |
2612 | } | |
2613 | ||
2614 | /* The user typed ^C twice. */ | |
2615 | ||
2616 | static void | |
fba45db2 | 2617 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2618 | { |
2619 | signal (signo, ofunc); | |
2620 | interrupt_query (); | |
c906108c SS |
2621 | signal (signo, remote_interrupt); |
2622 | } | |
7a292a7a SS |
2623 | |
2624 | /* This is the generic stop called via the target vector. When a target | |
2625 | interrupt is requested, either by the command line or the GUI, we | |
2626 | will eventually end up here. */ | |
c906108c | 2627 | static void |
fba45db2 | 2628 | remote_stop (void) |
c906108c | 2629 | { |
7a292a7a SS |
2630 | /* Send a break or a ^C, depending on user preference. */ |
2631 | if (remote_debug) | |
0f71a2f6 | 2632 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2633 | |
7a292a7a SS |
2634 | if (remote_break) |
2635 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2636 | else |
7a292a7a | 2637 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2638 | } |
2639 | ||
2640 | /* Ask the user what to do when an interrupt is received. */ | |
2641 | ||
2642 | static void | |
fba45db2 | 2643 | interrupt_query (void) |
c906108c SS |
2644 | { |
2645 | target_terminal_ours (); | |
2646 | ||
2647 | if (query ("Interrupted while waiting for the program.\n\ | |
2648 | Give up (and stop debugging it)? ")) | |
2649 | { | |
2650 | target_mourn_inferior (); | |
2651 | return_to_top_level (RETURN_QUIT); | |
2652 | } | |
2653 | ||
2654 | target_terminal_inferior (); | |
2655 | } | |
2656 | ||
6426a772 JM |
2657 | /* Enable/disable target terminal ownership. Most targets can use |
2658 | terminal groups to control terminal ownership. Remote targets are | |
2659 | different in that explicit transfer of ownership to/from GDB/target | |
2660 | is required. */ | |
2661 | ||
2662 | static void | |
2663 | remote_async_terminal_inferior (void) | |
2664 | { | |
2665 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2666 | sync_execution here. This function should only be called when | |
2667 | GDB is resuming the inferior in the forground. A background | |
2668 | resume (``run&'') should leave GDB in control of the terminal and | |
2669 | consequently should not call this code. */ | |
2670 | if (!sync_execution) | |
2671 | return; | |
2672 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2673 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2674 | to an asynchronous target with a synchronous command calls this | |
2675 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2676 | stops trying to transfer the terminal to the target when it | |
2677 | shouldn't this guard can go away. */ | |
2678 | if (!remote_async_terminal_ours_p) | |
2679 | return; | |
2680 | delete_file_handler (input_fd); | |
2681 | remote_async_terminal_ours_p = 0; | |
2682 | initialize_sigint_signal_handler (); | |
2683 | /* NOTE: At this point we could also register our selves as the | |
2684 | recipient of all input. Any characters typed could then be | |
2685 | passed on down to the target. */ | |
2686 | } | |
2687 | ||
2688 | static void | |
2689 | remote_async_terminal_ours (void) | |
2690 | { | |
2691 | /* See FIXME in remote_async_terminal_inferior. */ | |
2692 | if (!sync_execution) | |
2693 | return; | |
2694 | /* See FIXME in remote_async_terminal_inferior. */ | |
2695 | if (remote_async_terminal_ours_p) | |
2696 | return; | |
2697 | cleanup_sigint_signal_handler (NULL); | |
2698 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2699 | remote_async_terminal_ours_p = 1; | |
2700 | } | |
2701 | ||
c906108c SS |
2702 | /* If nonzero, ignore the next kill. */ |
2703 | ||
2704 | int kill_kludge; | |
2705 | ||
2706 | void | |
917317f4 | 2707 | remote_console_output (char *msg) |
c906108c SS |
2708 | { |
2709 | char *p; | |
2710 | ||
c5aa993b | 2711 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2712 | { |
2713 | char tb[2]; | |
2714 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2715 | tb[0] = c; | |
2716 | tb[1] = 0; | |
43ff13b4 | 2717 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2718 | } |
917317f4 | 2719 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2720 | } |
2721 | ||
0f71a2f6 JM |
2722 | /* Wait until the remote machine stops, then return, |
2723 | storing status in STATUS just as `wait' would. | |
2724 | Returns "pid", which in the case of a multi-threaded | |
2725 | remote OS, is the thread-id. */ | |
c906108c SS |
2726 | |
2727 | static int | |
fba45db2 | 2728 | remote_wait (int pid, struct target_waitstatus *status) |
c906108c | 2729 | { |
085dd6e6 | 2730 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2731 | int thread_num = -1; |
2732 | ||
2733 | status->kind = TARGET_WAITKIND_EXITED; | |
2734 | status->value.integer = 0; | |
2735 | ||
2736 | while (1) | |
2737 | { | |
2738 | unsigned char *p; | |
2739 | ||
c906108c | 2740 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2741 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2742 | signal (SIGINT, ofunc); |
2743 | ||
2744 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2745 | collection of trace data) every time the target stops. */ |
c906108c SS |
2746 | if (target_wait_loop_hook) |
2747 | (*target_wait_loop_hook) (); | |
2748 | ||
2749 | switch (buf[0]) | |
2750 | { | |
2751 | case 'E': /* Error of some sort */ | |
2752 | warning ("Remote failure reply: %s", buf); | |
2753 | continue; | |
2754 | case 'T': /* Status with PC, SP, FP, ... */ | |
2755 | { | |
2756 | int i; | |
2757 | long regno; | |
e6cbd02a | 2758 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2759 | |
2760 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2761 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2762 | ss = signal number |
2763 | n... = register number | |
2764 | r... = register contents | |
2765 | */ | |
c906108c SS |
2766 | p = &buf[3]; /* after Txx */ |
2767 | ||
2768 | while (*p) | |
2769 | { | |
2770 | unsigned char *p1; | |
2771 | char *p_temp; | |
2772 | ||
2773 | /* Read the register number */ | |
2774 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2775 | p1 = (unsigned char *) p_temp; |
c906108c | 2776 | |
c5aa993b | 2777 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2778 | { |
2779 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2780 | if (p1 == NULL) | |
2781 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2782 | Packet: '%s'\n", | |
2783 | p, buf); | |
2784 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2785 | { | |
2786 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2787 | record_currthread (thread_num); | |
2788 | p = (unsigned char *) p_temp; | |
2789 | } | |
2790 | } | |
2791 | else | |
2792 | { | |
2793 | p = p1; | |
2794 | ||
2795 | if (*p++ != ':') | |
2796 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2797 | Packet: '%s'\n", | |
2798 | p, buf); | |
2799 | ||
2800 | if (regno >= NUM_REGS) | |
2801 | warning ("Remote sent bad register number %ld: %s\n\ | |
2802 | Packet: '%s'\n", | |
2803 | regno, p, buf); | |
2804 | ||
2805 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2806 | { | |
2807 | if (p[0] == 0 || p[1] == 0) | |
2808 | warning ("Remote reply is too short: %s", buf); | |
2809 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2810 | p += 2; | |
2811 | } | |
2812 | supply_register (regno, regs); | |
2813 | } | |
2814 | ||
2815 | if (*p++ != ';') | |
2816 | { | |
2817 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2818 | warning (" here: %s", p); |
c906108c SS |
2819 | } |
2820 | } | |
2821 | } | |
2822 | /* fall through */ | |
2823 | case 'S': /* Old style status, just signal only */ | |
2824 | status->kind = TARGET_WAITKIND_STOPPED; | |
2825 | status->value.sig = (enum target_signal) | |
2826 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2827 | ||
0f71a2f6 JM |
2828 | if (buf[3] == 'p') |
2829 | { | |
2830 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2831 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2832 | |
2833 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2834 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2835 | value_from_string ("PDEBUG-")); |
2836 | cisco_kernel_mode = 0; | |
2837 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2838 | record_currthread (thread_num); | |
2839 | } | |
2840 | else if (buf[3] == 'k') | |
2841 | { | |
2842 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2843 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2844 | |
2845 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2846 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2847 | value_from_string ("KDEBUG-")); |
2848 | cisco_kernel_mode = 1; | |
2849 | } | |
c906108c | 2850 | goto got_status; |
0f71a2f6 JM |
2851 | case 'N': /* Cisco special: status and offsets */ |
2852 | { | |
2853 | bfd_vma text_addr, data_addr, bss_addr; | |
2854 | bfd_signed_vma text_off, data_off, bss_off; | |
2855 | unsigned char *p1; | |
2856 | ||
2857 | status->kind = TARGET_WAITKIND_STOPPED; | |
2858 | status->value.sig = (enum target_signal) | |
2859 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2860 | ||
c5aa993b | 2861 | if (symfile_objfile == NULL) |
0f71a2f6 | 2862 | { |
d4f3574e | 2863 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2864 | Packet Dropped"); |
2865 | goto got_status; | |
2866 | } | |
2867 | ||
2868 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2869 | * where AA is the signal number, TT is the new text | |
2870 | * address, DD * is the new data address, and BB is the | |
2871 | * new bss address. */ | |
2872 | ||
2873 | p = &buf[3]; | |
2874 | text_addr = strtoul (p, (char **) &p1, 16); | |
2875 | if (p1 == p || *p1 != ';') | |
2876 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2877 | p = p1 + 1; | |
2878 | data_addr = strtoul (p, (char **) &p1, 16); | |
2879 | if (p1 == p || *p1 != ';') | |
2880 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2881 | p = p1 + 1; | |
2882 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2883 | if (p1 == p) |
0f71a2f6 JM |
2884 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2885 | ||
2886 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2887 | &text_off, &data_off, &bss_off) | |
2888 | == 0) | |
c5aa993b | 2889 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2890 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2891 | ||
2892 | goto got_status; | |
2893 | } | |
c906108c SS |
2894 | case 'W': /* Target exited */ |
2895 | { | |
2896 | /* The remote process exited. */ | |
2897 | status->kind = TARGET_WAITKIND_EXITED; | |
2898 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2899 | goto got_status; | |
2900 | } | |
2901 | case 'X': | |
2902 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2903 | status->value.sig = (enum target_signal) | |
2904 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2905 | kill_kludge = 1; | |
2906 | ||
2907 | goto got_status; | |
2908 | case 'O': /* Console output */ | |
2909 | remote_console_output (buf + 1); | |
2910 | continue; | |
2911 | case '\0': | |
2912 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2913 | { | |
2914 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2915 | the remote system doesn't support it. */ |
c906108c SS |
2916 | target_terminal_ours_for_output (); |
2917 | printf_filtered | |
2918 | ("Can't send signals to this remote system. %s not sent.\n", | |
2919 | target_signal_to_name (last_sent_signal)); | |
2920 | last_sent_signal = TARGET_SIGNAL_0; | |
2921 | target_terminal_inferior (); | |
2922 | ||
2923 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2924 | putpkt ((char *) buf); | |
2925 | continue; | |
2926 | } | |
2927 | /* else fallthrough */ | |
2928 | default: | |
2929 | warning ("Invalid remote reply: %s", buf); | |
2930 | continue; | |
2931 | } | |
2932 | } | |
c5aa993b | 2933 | got_status: |
c906108c SS |
2934 | if (thread_num != -1) |
2935 | { | |
c906108c SS |
2936 | return thread_num; |
2937 | } | |
2938 | return inferior_pid; | |
2939 | } | |
2940 | ||
43ff13b4 JM |
2941 | /* Async version of remote_wait. */ |
2942 | static int | |
fba45db2 | 2943 | remote_async_wait (int pid, struct target_waitstatus *status) |
43ff13b4 JM |
2944 | { |
2945 | unsigned char *buf = alloca (PBUFSIZ); | |
2946 | int thread_num = -1; | |
2947 | ||
2948 | status->kind = TARGET_WAITKIND_EXITED; | |
2949 | status->value.integer = 0; | |
2950 | ||
2951 | while (1) | |
2952 | { | |
2953 | unsigned char *p; | |
c5aa993b | 2954 | |
ed9a39eb | 2955 | if (!target_is_async_p ()) |
43ff13b4 | 2956 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2957 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2958 | _never_ wait for ever -> test on target_is_async_p(). | |
2959 | However, before we do that we need to ensure that the caller | |
2960 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 2961 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 2962 | if (!target_is_async_p ()) |
43ff13b4 JM |
2963 | signal (SIGINT, ofunc); |
2964 | ||
2965 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2966 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2967 | if (target_wait_loop_hook) |
2968 | (*target_wait_loop_hook) (); | |
2969 | ||
2970 | switch (buf[0]) | |
2971 | { | |
2972 | case 'E': /* Error of some sort */ | |
2973 | warning ("Remote failure reply: %s", buf); | |
2974 | continue; | |
2975 | case 'T': /* Status with PC, SP, FP, ... */ | |
2976 | { | |
2977 | int i; | |
2978 | long regno; | |
e6cbd02a | 2979 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
2980 | |
2981 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2982 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2983 | ss = signal number |
2984 | n... = register number | |
2985 | r... = register contents | |
2986 | */ | |
43ff13b4 JM |
2987 | p = &buf[3]; /* after Txx */ |
2988 | ||
2989 | while (*p) | |
2990 | { | |
2991 | unsigned char *p1; | |
2992 | char *p_temp; | |
2993 | ||
2994 | /* Read the register number */ | |
2995 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2996 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2997 | |
c5aa993b | 2998 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2999 | { |
3000 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3001 | if (p1 == NULL) | |
3002 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3003 | Packet: '%s'\n", | |
3004 | p, buf); | |
3005 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3006 | { | |
3007 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3008 | record_currthread (thread_num); | |
3009 | p = (unsigned char *) p_temp; | |
3010 | } | |
3011 | } | |
3012 | else | |
3013 | { | |
3014 | p = p1; | |
3015 | ||
3016 | if (*p++ != ':') | |
3017 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3018 | Packet: '%s'\n", | |
3019 | p, buf); | |
3020 | ||
3021 | if (regno >= NUM_REGS) | |
3022 | warning ("Remote sent bad register number %ld: %s\n\ | |
3023 | Packet: '%s'\n", | |
3024 | regno, p, buf); | |
3025 | ||
3026 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
3027 | { | |
3028 | if (p[0] == 0 || p[1] == 0) | |
3029 | warning ("Remote reply is too short: %s", buf); | |
3030 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3031 | p += 2; | |
3032 | } | |
3033 | supply_register (regno, regs); | |
3034 | } | |
3035 | ||
3036 | if (*p++ != ';') | |
3037 | { | |
3038 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3039 | warning (" here: %s", p); |
43ff13b4 JM |
3040 | } |
3041 | } | |
3042 | } | |
3043 | /* fall through */ | |
3044 | case 'S': /* Old style status, just signal only */ | |
3045 | status->kind = TARGET_WAITKIND_STOPPED; | |
3046 | status->value.sig = (enum target_signal) | |
3047 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3048 | ||
3049 | if (buf[3] == 'p') | |
3050 | { | |
3051 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3052 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3053 | |
3054 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3055 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3056 | value_from_string ("PDEBUG-")); |
3057 | cisco_kernel_mode = 0; | |
3058 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3059 | record_currthread (thread_num); | |
3060 | } | |
3061 | else if (buf[3] == 'k') | |
3062 | { | |
3063 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3064 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3065 | |
3066 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3067 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3068 | value_from_string ("KDEBUG-")); |
3069 | cisco_kernel_mode = 1; | |
3070 | } | |
3071 | goto got_status; | |
3072 | case 'N': /* Cisco special: status and offsets */ | |
3073 | { | |
3074 | bfd_vma text_addr, data_addr, bss_addr; | |
3075 | bfd_signed_vma text_off, data_off, bss_off; | |
3076 | unsigned char *p1; | |
3077 | ||
3078 | status->kind = TARGET_WAITKIND_STOPPED; | |
3079 | status->value.sig = (enum target_signal) | |
3080 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3081 | ||
c5aa993b | 3082 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3083 | { |
3084 | warning ("Relocation packet recieved with no symbol file. \ | |
3085 | Packet Dropped"); | |
3086 | goto got_status; | |
3087 | } | |
3088 | ||
3089 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3090 | * where AA is the signal number, TT is the new text | |
3091 | * address, DD * is the new data address, and BB is the | |
3092 | * new bss address. */ | |
3093 | ||
3094 | p = &buf[3]; | |
3095 | text_addr = strtoul (p, (char **) &p1, 16); | |
3096 | if (p1 == p || *p1 != ';') | |
3097 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3098 | p = p1 + 1; | |
3099 | data_addr = strtoul (p, (char **) &p1, 16); | |
3100 | if (p1 == p || *p1 != ';') | |
3101 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3102 | p = p1 + 1; | |
3103 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3104 | if (p1 == p) |
43ff13b4 JM |
3105 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3106 | ||
3107 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3108 | &text_off, &data_off, &bss_off) | |
3109 | == 0) | |
c5aa993b | 3110 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3111 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3112 | ||
3113 | goto got_status; | |
3114 | } | |
3115 | case 'W': /* Target exited */ | |
3116 | { | |
3117 | /* The remote process exited. */ | |
3118 | status->kind = TARGET_WAITKIND_EXITED; | |
3119 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3120 | goto got_status; | |
3121 | } | |
3122 | case 'X': | |
3123 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3124 | status->value.sig = (enum target_signal) | |
3125 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3126 | kill_kludge = 1; | |
3127 | ||
3128 | goto got_status; | |
3129 | case 'O': /* Console output */ | |
3130 | remote_console_output (buf + 1); | |
c4093a6a JM |
3131 | /* Return immediately to the event loop. The event loop will |
3132 | still be waiting on the inferior afterwards. */ | |
3133 | status->kind = TARGET_WAITKIND_IGNORE; | |
3134 | goto got_status; | |
43ff13b4 JM |
3135 | case '\0': |
3136 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3137 | { | |
3138 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3139 | the remote system doesn't support it. */ |
43ff13b4 JM |
3140 | target_terminal_ours_for_output (); |
3141 | printf_filtered | |
3142 | ("Can't send signals to this remote system. %s not sent.\n", | |
3143 | target_signal_to_name (last_sent_signal)); | |
3144 | last_sent_signal = TARGET_SIGNAL_0; | |
3145 | target_terminal_inferior (); | |
3146 | ||
3147 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3148 | putpkt ((char *) buf); | |
3149 | continue; | |
3150 | } | |
3151 | /* else fallthrough */ | |
3152 | default: | |
3153 | warning ("Invalid remote reply: %s", buf); | |
3154 | continue; | |
3155 | } | |
3156 | } | |
c5aa993b | 3157 | got_status: |
43ff13b4 JM |
3158 | if (thread_num != -1) |
3159 | { | |
3160 | return thread_num; | |
3161 | } | |
3162 | return inferior_pid; | |
3163 | } | |
3164 | ||
c906108c SS |
3165 | /* Number of bytes of registers this stub implements. */ |
3166 | ||
3167 | static int register_bytes_found; | |
3168 | ||
3169 | /* Read the remote registers into the block REGS. */ | |
3170 | /* Currently we just read all the registers, so we don't use regno. */ | |
3171 | ||
3172 | /* ARGSUSED */ | |
3173 | static void | |
fba45db2 | 3174 | remote_fetch_registers (int regno) |
c906108c | 3175 | { |
085dd6e6 | 3176 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3177 | int i; |
3178 | char *p; | |
7302a204 | 3179 | char *regs = alloca (REGISTER_BYTES); |
c906108c SS |
3180 | |
3181 | set_thread (inferior_pid, 1); | |
3182 | ||
3183 | sprintf (buf, "g"); | |
c2d11a7d | 3184 | remote_send (buf, PBUFSIZ); |
c906108c | 3185 | |
11cf8741 JM |
3186 | /* Save the size of the packet sent to us by the target. Its used |
3187 | as a heuristic when determining the max size of packets that the | |
3188 | target can safely receive. */ | |
3189 | if (actual_register_packet_size == 0) | |
3190 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
3191 | |
3192 | /* Unimplemented registers read as all bits zero. */ | |
3193 | memset (regs, 0, REGISTER_BYTES); | |
3194 | ||
3195 | /* We can get out of synch in various cases. If the first character | |
3196 | in the buffer is not a hex character, assume that has happened | |
3197 | and try to fetch another packet to read. */ | |
3198 | while ((buf[0] < '0' || buf[0] > '9') | |
3199 | && (buf[0] < 'a' || buf[0] > 'f') | |
3200 | && buf[0] != 'x') /* New: unavailable register value */ | |
3201 | { | |
3202 | if (remote_debug) | |
0f71a2f6 JM |
3203 | fprintf_unfiltered (gdb_stdlog, |
3204 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 3205 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3206 | } |
3207 | ||
3208 | /* Reply describes registers byte by byte, each byte encoded as two | |
3209 | hex characters. Suck them all up, then supply them to the | |
3210 | register cacheing/storage mechanism. */ | |
3211 | ||
3212 | p = buf; | |
3213 | for (i = 0; i < REGISTER_BYTES; i++) | |
3214 | { | |
3215 | if (p[0] == 0) | |
3216 | break; | |
3217 | if (p[1] == 0) | |
3218 | { | |
3219 | warning ("Remote reply is of odd length: %s", buf); | |
3220 | /* Don't change register_bytes_found in this case, and don't | |
3221 | print a second warning. */ | |
3222 | goto supply_them; | |
3223 | } | |
3224 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3225 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3226 | else |
3227 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3228 | p += 2; | |
3229 | } | |
3230 | ||
3231 | if (i != register_bytes_found) | |
3232 | { | |
3233 | register_bytes_found = i; | |
2649061d AC |
3234 | if (REGISTER_BYTES_OK_P () |
3235 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3236 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3237 | } |
c5aa993b JM |
3238 | |
3239 | supply_them: | |
c906108c | 3240 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3241 | { |
3242 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3243 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
7302a204 | 3244 | set_register_cached (i, -1); |
c5aa993b | 3245 | } |
c906108c SS |
3246 | } |
3247 | ||
3248 | /* Prepare to store registers. Since we may send them all (using a | |
3249 | 'G' request), we have to read out the ones we don't want to change | |
3250 | first. */ | |
3251 | ||
c5aa993b | 3252 | static void |
fba45db2 | 3253 | remote_prepare_to_store (void) |
c906108c SS |
3254 | { |
3255 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3256 | switch (remote_protocol_P.support) |
3257 | { | |
3258 | case PACKET_DISABLE: | |
3259 | case PACKET_SUPPORT_UNKNOWN: | |
3260 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3261 | break; | |
3262 | case PACKET_ENABLE: | |
3263 | break; | |
3264 | } | |
3265 | } | |
3266 | ||
3267 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3268 | packet was not recognized. */ | |
3269 | ||
3270 | static int | |
c2d11a7d | 3271 | store_register_using_P (int regno) |
5a2468f5 JM |
3272 | { |
3273 | /* Try storing a single register. */ | |
3274 | char *buf = alloca (PBUFSIZ); | |
3275 | char *regp; | |
3276 | char *p; | |
3277 | int i; | |
3278 | ||
3279 | sprintf (buf, "P%x=", regno); | |
3280 | p = buf + strlen (buf); | |
7302a204 | 3281 | regp = register_buffer (regno); |
5a2468f5 JM |
3282 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) |
3283 | { | |
3284 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
3285 | *p++ = tohex (regp[i] & 0xf); | |
3286 | } | |
3287 | *p = '\0'; | |
c2d11a7d | 3288 | remote_send (buf, PBUFSIZ); |
5a2468f5 JM |
3289 | |
3290 | return buf[0] != '\0'; | |
c906108c SS |
3291 | } |
3292 | ||
5a2468f5 | 3293 | |
c906108c | 3294 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
7302a204 | 3295 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3296 | |
3297 | static void | |
fba45db2 | 3298 | remote_store_registers (int regno) |
c906108c | 3299 | { |
085dd6e6 | 3300 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3301 | int i; |
3302 | char *p; | |
7302a204 | 3303 | char *regs; |
c906108c SS |
3304 | |
3305 | set_thread (inferior_pid, 1); | |
3306 | ||
5a2468f5 | 3307 | if (regno >= 0) |
c906108c | 3308 | { |
5a2468f5 | 3309 | switch (remote_protocol_P.support) |
c906108c | 3310 | { |
5a2468f5 JM |
3311 | case PACKET_DISABLE: |
3312 | break; | |
3313 | case PACKET_ENABLE: | |
3314 | if (store_register_using_P (regno)) | |
3315 | return; | |
3316 | else | |
3317 | error ("Protocol error: P packet not recognized by stub"); | |
3318 | case PACKET_SUPPORT_UNKNOWN: | |
3319 | if (store_register_using_P (regno)) | |
3320 | { | |
3321 | /* The stub recognized the 'P' packet. Remember this. */ | |
3322 | remote_protocol_P.support = PACKET_ENABLE; | |
3323 | return; | |
3324 | } | |
3325 | else | |
3326 | { | |
3327 | /* The stub does not support the 'P' packet. Use 'G' | |
3328 | instead, and don't try using 'P' in the future (it | |
3329 | will just waste our time). */ | |
3330 | remote_protocol_P.support = PACKET_DISABLE; | |
3331 | break; | |
3332 | } | |
c906108c | 3333 | } |
c906108c SS |
3334 | } |
3335 | ||
3336 | buf[0] = 'G'; | |
3337 | ||
3338 | /* Command describes registers byte by byte, | |
3339 | each byte encoded as two hex characters. */ | |
3340 | ||
7302a204 | 3341 | regs = register_buffer (-1); |
c906108c SS |
3342 | p = buf + 1; |
3343 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3344 | for (i = 0; i < register_bytes_found; i++) | |
3345 | { | |
7302a204 ND |
3346 | *p++ = tohex ((regs[i] >> 4) & 0xf); |
3347 | *p++ = tohex (regs[i] & 0xf); | |
c906108c SS |
3348 | } |
3349 | *p = '\0'; | |
3350 | ||
c2d11a7d | 3351 | remote_send (buf, PBUFSIZ); |
c906108c | 3352 | } |
c906108c SS |
3353 | \f |
3354 | ||
3355 | /* Return the number of hex digits in num. */ | |
3356 | ||
3357 | static int | |
fba45db2 | 3358 | hexnumlen (ULONGEST num) |
c906108c SS |
3359 | { |
3360 | int i; | |
3361 | ||
3362 | for (i = 0; num != 0; i++) | |
3363 | num >>= 4; | |
3364 | ||
3365 | return max (i, 1); | |
3366 | } | |
3367 | ||
2df3850c | 3368 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3369 | |
3370 | static int | |
fba45db2 | 3371 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3372 | { |
c906108c | 3373 | int len = hexnumlen (num); |
2df3850c JM |
3374 | return hexnumnstr (buf, num, len); |
3375 | } | |
3376 | ||
c906108c | 3377 | |
2df3850c | 3378 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3379 | |
2df3850c | 3380 | static int |
fba45db2 | 3381 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3382 | { |
3383 | int i; | |
3384 | ||
3385 | buf[width] = '\0'; | |
3386 | ||
3387 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3388 | { |
c5aa993b | 3389 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3390 | num >>= 4; |
3391 | } | |
3392 | ||
2df3850c | 3393 | return width; |
c906108c SS |
3394 | } |
3395 | ||
3396 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3397 | ||
3398 | static CORE_ADDR | |
fba45db2 | 3399 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3400 | { |
3401 | if (remote_address_size > 0 | |
3402 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3403 | { | |
3404 | /* Only create a mask when that mask can safely be constructed | |
3405 | in a ULONGEST variable. */ | |
3406 | ULONGEST mask = 1; | |
3407 | mask = (mask << remote_address_size) - 1; | |
3408 | addr &= mask; | |
3409 | } | |
3410 | return addr; | |
3411 | } | |
3412 | ||
3413 | /* Determine whether the remote target supports binary downloading. | |
3414 | This is accomplished by sending a no-op memory write of zero length | |
3415 | to the target at the specified address. It does not suffice to send | |
3416 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3417 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3418 | ||
96baa820 JM |
3419 | NOTE: This can still lose if the serial line is not eight-bit |
3420 | clean. In cases like this, the user should clear "remote | |
3421 | X-packet". */ | |
3422 | ||
c906108c | 3423 | static void |
fba45db2 | 3424 | check_binary_download (CORE_ADDR addr) |
c906108c | 3425 | { |
96baa820 | 3426 | switch (remote_protocol_binary_download.support) |
c906108c | 3427 | { |
96baa820 JM |
3428 | case PACKET_DISABLE: |
3429 | break; | |
3430 | case PACKET_ENABLE: | |
3431 | break; | |
3432 | case PACKET_SUPPORT_UNKNOWN: | |
3433 | { | |
3434 | char *buf = alloca (PBUFSIZ); | |
3435 | char *p; | |
3436 | ||
3437 | p = buf; | |
3438 | *p++ = 'X'; | |
3439 | p += hexnumstr (p, (ULONGEST) addr); | |
3440 | *p++ = ','; | |
3441 | p += hexnumstr (p, (ULONGEST) 0); | |
3442 | *p++ = ':'; | |
3443 | *p = '\0'; | |
3444 | ||
3445 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3446 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3447 | |
96baa820 JM |
3448 | if (buf[0] == '\0') |
3449 | { | |
3450 | if (remote_debug) | |
3451 | fprintf_unfiltered (gdb_stdlog, | |
3452 | "binary downloading NOT suppported by target\n"); | |
3453 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3454 | } | |
3455 | else | |
3456 | { | |
3457 | if (remote_debug) | |
3458 | fprintf_unfiltered (gdb_stdlog, | |
3459 | "binary downloading suppported by target\n"); | |
3460 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3461 | } | |
3462 | break; | |
3463 | } | |
c906108c SS |
3464 | } |
3465 | } | |
3466 | ||
3467 | /* Write memory data directly to the remote machine. | |
3468 | This does not inform the data cache; the data cache uses this. | |
3469 | MEMADDR is the address in the remote memory space. | |
3470 | MYADDR is the address of the buffer in our space. | |
3471 | LEN is the number of bytes. | |
3472 | ||
917317f4 JM |
3473 | Returns number of bytes transferred, or 0 (setting errno) for |
3474 | error. Only transfer a single packet. */ | |
c906108c SS |
3475 | |
3476 | static int | |
917317f4 | 3477 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3478 | { |
917317f4 | 3479 | unsigned char *buf; |
c906108c | 3480 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3481 | unsigned char *p; |
3482 | unsigned char *plen; | |
c2d11a7d | 3483 | long sizeof_buf; |
917317f4 JM |
3484 | int plenlen; |
3485 | int todo; | |
3486 | int nr_bytes; | |
c906108c SS |
3487 | |
3488 | /* Verify that the target can support a binary download */ | |
3489 | check_binary_download (memaddr); | |
3490 | ||
917317f4 | 3491 | /* Determine the max packet size. */ |
11cf8741 | 3492 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3493 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3494 | buf = alloca (sizeof_buf); | |
c906108c | 3495 | |
7a292a7a | 3496 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3497 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3498 | ||
917317f4 JM |
3499 | /* construct "M"<memaddr>","<len>":" */ |
3500 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3501 | p = buf; | |
3502 | ||
3503 | /* Append [XM]. Compute a best guess of the number of bytes | |
3504 | actually transfered. */ | |
3505 | switch (remote_protocol_binary_download.support) | |
c906108c | 3506 | { |
917317f4 JM |
3507 | case PACKET_ENABLE: |
3508 | *p++ = 'X'; | |
3509 | /* Best guess at number of bytes that will fit. */ | |
3510 | todo = min (len, max_buf_size); | |
3511 | break; | |
3512 | case PACKET_DISABLE: | |
3513 | *p++ = 'M'; | |
3514 | /* num bytes that will fit */ | |
3515 | todo = min (len, max_buf_size / 2); | |
3516 | break; | |
3517 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3518 | internal_error (__FILE__, __LINE__, |
3519 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3520 | default: |
8e65ff28 | 3521 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3522 | } |
3523 | ||
3524 | /* Append <memaddr> */ | |
3525 | memaddr = remote_address_masked (memaddr); | |
3526 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3527 | *p++ = ','; | |
3528 | ||
3529 | /* Append <len>. Retain the location/size of <len>. It may | |
3530 | need to be adjusted once the packet body has been created. */ | |
3531 | plen = p; | |
3532 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3533 | p += plenlen; | |
3534 | *p++ = ':'; | |
3535 | *p = '\0'; | |
3536 | ||
3537 | /* Append the packet body. */ | |
3538 | switch (remote_protocol_binary_download.support) | |
3539 | { | |
3540 | case PACKET_ENABLE: | |
3541 | /* Binary mode. Send target system values byte by byte, in | |
3542 | increasing byte addresses. Only escape certain critical | |
3543 | characters. */ | |
3544 | for (nr_bytes = 0; | |
3545 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3546 | nr_bytes++) | |
c906108c | 3547 | { |
917317f4 JM |
3548 | switch (myaddr[nr_bytes] & 0xff) |
3549 | { | |
3550 | case '$': | |
3551 | case '#': | |
3552 | case 0x7d: | |
3553 | /* These must be escaped */ | |
3554 | *p++ = 0x7d; | |
3555 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3556 | break; | |
3557 | default: | |
3558 | *p++ = myaddr[nr_bytes] & 0xff; | |
3559 | break; | |
3560 | } | |
c906108c | 3561 | } |
917317f4 | 3562 | if (nr_bytes < todo) |
c906108c | 3563 | { |
917317f4 JM |
3564 | /* Escape chars have filled up the buffer prematurely, |
3565 | and we have actually sent fewer bytes than planned. | |
3566 | Fix-up the length field of the packet. Use the same | |
3567 | number of characters as before. */ | |
3568 | ||
3569 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3570 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3571 | } |
917317f4 JM |
3572 | break; |
3573 | case PACKET_DISABLE: | |
3574 | /* Normal mode: Send target system values byte by byte, in | |
3575 | increasing byte addresses. Each byte is encoded as a two hex | |
3576 | value. */ | |
3577 | for (nr_bytes = 0; nr_bytes < todo; nr_bytes++) | |
c906108c | 3578 | { |
917317f4 JM |
3579 | *p++ = tohex ((myaddr[nr_bytes] >> 4) & 0xf); |
3580 | *p++ = tohex (myaddr[nr_bytes] & 0xf); | |
c906108c | 3581 | } |
917317f4 JM |
3582 | *p = '\0'; |
3583 | break; | |
3584 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3585 | internal_error (__FILE__, __LINE__, |
3586 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3587 | default: |
8e65ff28 | 3588 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3589 | } |
917317f4 JM |
3590 | |
3591 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3592 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3593 | |
3594 | if (buf[0] == 'E') | |
3595 | { | |
3596 | /* There is no correspondance between what the remote protocol | |
3597 | uses for errors and errno codes. We would like a cleaner way | |
3598 | of representing errors (big enough to include errno codes, | |
3599 | bfd_error codes, and others). But for now just return EIO. */ | |
3600 | errno = EIO; | |
3601 | return 0; | |
3602 | } | |
3603 | ||
3604 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3605 | bytes than we'd planned. */ | |
3606 | return nr_bytes; | |
c906108c SS |
3607 | } |
3608 | ||
3609 | /* Read memory data directly from the remote machine. | |
3610 | This does not use the data cache; the data cache uses this. | |
3611 | MEMADDR is the address in the remote memory space. | |
3612 | MYADDR is the address of the buffer in our space. | |
3613 | LEN is the number of bytes. | |
3614 | ||
3615 | Returns number of bytes transferred, or 0 for error. */ | |
3616 | ||
917317f4 JM |
3617 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3618 | remote targets) shouldn't attempt to read the entire buffer. | |
3619 | Instead it should read a single packet worth of data and then | |
3620 | return the byte size of that packet to the caller. The caller (its | |
3621 | caller and its callers caller ;-) already contains code for | |
3622 | handling partial reads. */ | |
3623 | ||
c906108c | 3624 | static int |
fba45db2 | 3625 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3626 | { |
11cf8741 | 3627 | char *buf; |
c906108c | 3628 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3629 | long sizeof_buf; |
c906108c SS |
3630 | int origlen; |
3631 | ||
11cf8741 JM |
3632 | /* Create a buffer big enough for this packet. */ |
3633 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3634 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3635 | buf = alloca (sizeof_buf); | |
c906108c SS |
3636 | |
3637 | origlen = len; | |
3638 | while (len > 0) | |
3639 | { | |
c906108c SS |
3640 | char *p; |
3641 | int todo; | |
3642 | int i; | |
3643 | ||
c5aa993b | 3644 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3645 | |
3646 | /* construct "m"<memaddr>","<len>" */ | |
3647 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3648 | memaddr = remote_address_masked (memaddr); | |
3649 | p = buf; | |
3650 | *p++ = 'm'; | |
3651 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3652 | *p++ = ','; | |
3653 | p += hexnumstr (p, (ULONGEST) todo); | |
3654 | *p = '\0'; | |
3655 | ||
3656 | putpkt (buf); | |
c2d11a7d | 3657 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3658 | |
3659 | if (buf[0] == 'E') | |
3660 | { | |
3661 | /* There is no correspondance between what the remote protocol uses | |
3662 | for errors and errno codes. We would like a cleaner way of | |
3663 | representing errors (big enough to include errno codes, bfd_error | |
3664 | codes, and others). But for now just return EIO. */ | |
3665 | errno = EIO; | |
3666 | return 0; | |
3667 | } | |
3668 | ||
c5aa993b JM |
3669 | /* Reply describes memory byte by byte, |
3670 | each byte encoded as two hex characters. */ | |
c906108c SS |
3671 | |
3672 | p = buf; | |
3673 | for (i = 0; i < todo; i++) | |
3674 | { | |
3675 | if (p[0] == 0 || p[1] == 0) | |
3676 | /* Reply is short. This means that we were able to read | |
3677 | only part of what we wanted to. */ | |
3678 | return i + (origlen - len); | |
3679 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3680 | p += 2; | |
3681 | } | |
3682 | myaddr += todo; | |
3683 | memaddr += todo; | |
3684 | len -= todo; | |
3685 | } | |
3686 | return origlen; | |
3687 | } | |
3688 | \f | |
3689 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3690 | transferring to or from debugger address BUFFER. Write to inferior if |
3691 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3692 | for error. TARGET is unused. */ |
392a587b | 3693 | |
c906108c SS |
3694 | /* ARGSUSED */ |
3695 | static int | |
c338868a | 3696 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3697 | int should_write, |
3698 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3699 | struct target_ops *target) | |
c906108c | 3700 | { |
392a587b JM |
3701 | CORE_ADDR targ_addr; |
3702 | int targ_len; | |
4930751a C |
3703 | int res; |
3704 | ||
392a587b JM |
3705 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3706 | if (targ_len <= 0) | |
c906108c | 3707 | return 0; |
c906108c | 3708 | |
4930751a C |
3709 | if (should_write) |
3710 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3711 | else | |
3712 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3713 | ||
3714 | return res; | |
c906108c SS |
3715 | } |
3716 | ||
c5aa993b | 3717 | |
c906108c SS |
3718 | #if 0 |
3719 | /* Enable after 4.12. */ | |
3720 | ||
3721 | void | |
c338868a KB |
3722 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3723 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3724 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3725 | { |
3726 | if (increment == -4 && len == 4) | |
3727 | { | |
3728 | long mask_long, data_long; | |
3729 | long data_found_long; | |
3730 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3731 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3732 | long returned_long[2]; |
3733 | char *p; | |
3734 | ||
3735 | mask_long = extract_unsigned_integer (mask, len); | |
3736 | data_long = extract_unsigned_integer (data, len); | |
3737 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3738 | putpkt (buf); | |
c2d11a7d | 3739 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3740 | if (buf[0] == '\0') |
3741 | { | |
3742 | /* The stub doesn't support the 't' request. We might want to | |
3743 | remember this fact, but on the other hand the stub could be | |
3744 | switched on us. Maybe we should remember it only until | |
3745 | the next "target remote". */ | |
3746 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3747 | hirange, addr_found, data_found); | |
3748 | return; | |
3749 | } | |
3750 | ||
3751 | if (buf[0] == 'E') | |
3752 | /* There is no correspondance between what the remote protocol uses | |
3753 | for errors and errno codes. We would like a cleaner way of | |
3754 | representing errors (big enough to include errno codes, bfd_error | |
3755 | codes, and others). But for now just use EIO. */ | |
3756 | memory_error (EIO, startaddr); | |
3757 | p = buf; | |
3758 | addr_we_found = 0; | |
3759 | while (*p != '\0' && *p != ',') | |
3760 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3761 | if (*p == '\0') | |
3762 | error ("Protocol error: short return for search"); | |
3763 | ||
3764 | data_found_long = 0; | |
3765 | while (*p != '\0' && *p != ',') | |
3766 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3767 | /* Ignore anything after this comma, for future extensions. */ | |
3768 | ||
3769 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3770 | { | |
3771 | *addr_found = 0; | |
3772 | return; | |
3773 | } | |
3774 | ||
3775 | *addr_found = addr_we_found; | |
3776 | *data_found = store_unsigned_integer (data_we_found, len); | |
3777 | return; | |
3778 | } | |
3779 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3780 | hirange, addr_found, data_found); | |
3781 | } | |
3782 | #endif /* 0 */ | |
3783 | \f | |
3784 | static void | |
fba45db2 | 3785 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3786 | { |
3787 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3788 | } | |
3789 | \f | |
3790 | /* Stuff for dealing with the packets which are part of this protocol. | |
3791 | See comment at top of file for details. */ | |
3792 | ||
3793 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3794 | ||
3795 | static int | |
fba45db2 | 3796 | readchar (int timeout) |
c906108c SS |
3797 | { |
3798 | int ch; | |
3799 | ||
3800 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3801 | ||
2acceee2 JM |
3802 | if (ch >= 0) |
3803 | return (ch & 0x7f); | |
3804 | ||
3805 | switch ((enum serial_rc) ch) | |
c906108c SS |
3806 | { |
3807 | case SERIAL_EOF: | |
2acceee2 | 3808 | target_mourn_inferior (); |
c906108c | 3809 | error ("Remote connection closed"); |
2acceee2 | 3810 | /* no return */ |
c906108c SS |
3811 | case SERIAL_ERROR: |
3812 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3813 | /* no return */ |
c906108c | 3814 | case SERIAL_TIMEOUT: |
2acceee2 | 3815 | break; |
c906108c | 3816 | } |
2acceee2 | 3817 | return ch; |
c906108c SS |
3818 | } |
3819 | ||
3820 | /* Send the command in BUF to the remote machine, and read the reply | |
3821 | into BUF. Report an error if we get an error reply. */ | |
3822 | ||
3823 | static void | |
c2d11a7d JM |
3824 | remote_send (char *buf, |
3825 | long sizeof_buf) | |
c906108c SS |
3826 | { |
3827 | putpkt (buf); | |
c2d11a7d | 3828 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3829 | |
3830 | if (buf[0] == 'E') | |
3831 | error ("Remote failure reply: %s", buf); | |
3832 | } | |
3833 | ||
3834 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3835 | string notation. */ | |
3836 | ||
3837 | static void | |
fba45db2 | 3838 | print_packet (char *buf) |
c906108c SS |
3839 | { |
3840 | puts_filtered ("\""); | |
43e526b9 | 3841 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3842 | puts_filtered ("\""); |
3843 | } | |
3844 | ||
3845 | int | |
fba45db2 | 3846 | putpkt (char *buf) |
c906108c SS |
3847 | { |
3848 | return putpkt_binary (buf, strlen (buf)); | |
3849 | } | |
3850 | ||
3851 | /* Send a packet to the remote machine, with error checking. The data | |
3852 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3853 | to account for the $, # and checksum, and for a possible /0 if we are | |
3854 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3855 | ||
3856 | static int | |
fba45db2 | 3857 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3858 | { |
3859 | int i; | |
3860 | unsigned char csum = 0; | |
11cf8741 | 3861 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3862 | long sizeof_junkbuf = PBUFSIZ; |
3863 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3864 | |
c906108c SS |
3865 | int ch; |
3866 | int tcount = 0; | |
3867 | char *p; | |
3868 | ||
3869 | /* Copy the packet into buffer BUF2, encapsulating it | |
3870 | and giving it a checksum. */ | |
3871 | ||
c906108c SS |
3872 | p = buf2; |
3873 | *p++ = '$'; | |
3874 | ||
3875 | for (i = 0; i < cnt; i++) | |
3876 | { | |
3877 | csum += buf[i]; | |
3878 | *p++ = buf[i]; | |
3879 | } | |
3880 | *p++ = '#'; | |
3881 | *p++ = tohex ((csum >> 4) & 0xf); | |
3882 | *p++ = tohex (csum & 0xf); | |
3883 | ||
3884 | /* Send it over and over until we get a positive ack. */ | |
3885 | ||
3886 | while (1) | |
3887 | { | |
3888 | int started_error_output = 0; | |
3889 | ||
3890 | if (remote_debug) | |
3891 | { | |
3892 | *p = '\0'; | |
43e526b9 JM |
3893 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3894 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3895 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3896 | gdb_flush (gdb_stdlog); |
c906108c SS |
3897 | } |
3898 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3899 | perror_with_name ("putpkt: write failed"); | |
3900 | ||
3901 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3902 | while (1) | |
3903 | { | |
3904 | ch = readchar (remote_timeout); | |
3905 | ||
c5aa993b | 3906 | if (remote_debug) |
c906108c SS |
3907 | { |
3908 | switch (ch) | |
3909 | { | |
3910 | case '+': | |
1216fa2c | 3911 | case '-': |
c906108c SS |
3912 | case SERIAL_TIMEOUT: |
3913 | case '$': | |
3914 | if (started_error_output) | |
3915 | { | |
3916 | putchar_unfiltered ('\n'); | |
3917 | started_error_output = 0; | |
3918 | } | |
3919 | } | |
3920 | } | |
3921 | ||
3922 | switch (ch) | |
3923 | { | |
3924 | case '+': | |
3925 | if (remote_debug) | |
0f71a2f6 | 3926 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3927 | return 1; |
1216fa2c AC |
3928 | case '-': |
3929 | if (remote_debug) | |
3930 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3931 | case SERIAL_TIMEOUT: |
c5aa993b | 3932 | tcount++; |
c906108c SS |
3933 | if (tcount > 3) |
3934 | return 0; | |
3935 | break; /* Retransmit buffer */ | |
3936 | case '$': | |
3937 | { | |
40e3f985 FN |
3938 | if (remote_debug) |
3939 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3940 | /* It's probably an old response, and we're out of sync. |
3941 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3942 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3943 | continue; /* Now, go look for + */ |
c906108c SS |
3944 | } |
3945 | default: | |
3946 | if (remote_debug) | |
3947 | { | |
3948 | if (!started_error_output) | |
3949 | { | |
3950 | started_error_output = 1; | |
0f71a2f6 | 3951 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3952 | } |
0f71a2f6 | 3953 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3954 | } |
3955 | continue; | |
3956 | } | |
3957 | break; /* Here to retransmit */ | |
3958 | } | |
3959 | ||
3960 | #if 0 | |
3961 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3962 | able to get out next time we call QUIT, without anything as |
3963 | violent as interrupt_query. If we want to provide a way out of | |
3964 | here without getting to the next QUIT, it should be based on | |
3965 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3966 | if (quit_flag) |
3967 | { | |
3968 | quit_flag = 0; | |
3969 | interrupt_query (); | |
3970 | } | |
3971 | #endif | |
3972 | } | |
3973 | } | |
3974 | ||
0f71a2f6 JM |
3975 | static int remote_cisco_mode; |
3976 | ||
c906108c SS |
3977 | /* Come here after finding the start of the frame. Collect the rest |
3978 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3979 | compression. No more than sizeof_buf-1 characters are read so that |
3980 | the buffer can be NUL terminated. | |
c906108c | 3981 | |
c2d11a7d JM |
3982 | Returns -1 on error, number of characters in buffer (ignoring the |
3983 | trailing NULL) on success. (could be extended to return one of the | |
3984 | SERIAL status indications). */ | |
3985 | ||
3986 | static long | |
3987 | read_frame (char *buf, | |
3988 | long sizeof_buf) | |
c906108c SS |
3989 | { |
3990 | unsigned char csum; | |
c2d11a7d | 3991 | long bc; |
c906108c SS |
3992 | int c; |
3993 | ||
3994 | csum = 0; | |
c2d11a7d | 3995 | bc = 0; |
c906108c SS |
3996 | |
3997 | while (1) | |
3998 | { | |
c2d11a7d | 3999 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4000 | c = readchar (remote_timeout); |
c906108c SS |
4001 | switch (c) |
4002 | { | |
4003 | case SERIAL_TIMEOUT: | |
4004 | if (remote_debug) | |
0f71a2f6 | 4005 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4006 | return -1; |
c906108c SS |
4007 | case '$': |
4008 | if (remote_debug) | |
0f71a2f6 JM |
4009 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4010 | gdb_stdlog); | |
c2d11a7d | 4011 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4012 | case '#': |
4013 | { | |
4014 | unsigned char pktcsum; | |
e1b09194 AC |
4015 | int check_0 = 0; |
4016 | int check_1 = 0; | |
c906108c | 4017 | |
c2d11a7d | 4018 | buf[bc] = '\0'; |
c906108c | 4019 | |
e1b09194 AC |
4020 | check_0 = readchar (remote_timeout); |
4021 | if (check_0 >= 0) | |
4022 | check_1 = readchar (remote_timeout); | |
4023 | ||
4024 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4025 | { | |
4026 | if (remote_debug) | |
4027 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4028 | return -1; | |
4029 | } | |
4030 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4031 | { |
4032 | if (remote_debug) | |
4033 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4034 | return -1; | |
4035 | } | |
c906108c | 4036 | |
e1b09194 | 4037 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4038 | if (csum == pktcsum) |
c2d11a7d | 4039 | return bc; |
c906108c | 4040 | |
c5aa993b | 4041 | if (remote_debug) |
c906108c | 4042 | { |
0f71a2f6 | 4043 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4044 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4045 | pktcsum, csum); |
4046 | fputs_filtered (buf, gdb_stdlog); | |
4047 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4048 | } |
c2d11a7d JM |
4049 | /* Number of characters in buffer ignoring trailing |
4050 | NUL. */ | |
4051 | return -1; | |
c906108c SS |
4052 | } |
4053 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4054 | { |
4055 | int repeat; | |
4056 | csum += c; | |
c906108c | 4057 | |
c2c6d25f JM |
4058 | if (remote_cisco_mode == 0) |
4059 | { | |
4060 | c = readchar (remote_timeout); | |
4061 | csum += c; | |
4062 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4063 | } | |
4064 | else | |
4065 | { | |
4066 | /* Cisco's run-length encoding variant uses two | |
4067 | hex chars to represent the repeat count. */ | |
4068 | ||
4069 | c = readchar (remote_timeout); | |
4070 | csum += c; | |
4071 | repeat = fromhex (c) << 4; | |
4072 | c = readchar (remote_timeout); | |
4073 | csum += c; | |
4074 | repeat += fromhex (c); | |
4075 | } | |
c906108c | 4076 | |
c2d11a7d JM |
4077 | /* The character before ``*'' is repeated. */ |
4078 | ||
c2c6d25f | 4079 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
4080 | && bc > 0 |
4081 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 4082 | { |
c2d11a7d JM |
4083 | memset (&buf[bc], buf[bc - 1], repeat); |
4084 | bc += repeat; | |
c2c6d25f JM |
4085 | continue; |
4086 | } | |
4087 | ||
c2d11a7d | 4088 | buf[bc] = '\0'; |
c2c6d25f JM |
4089 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4090 | puts_filtered (buf); | |
4091 | puts_filtered ("\n"); | |
c2d11a7d | 4092 | return -1; |
c2c6d25f | 4093 | } |
c906108c | 4094 | default: |
c2d11a7d | 4095 | if (bc < sizeof_buf - 1) |
c906108c | 4096 | { |
c2d11a7d | 4097 | buf[bc++] = c; |
c906108c SS |
4098 | csum += c; |
4099 | continue; | |
4100 | } | |
4101 | ||
c2d11a7d | 4102 | buf[bc] = '\0'; |
c906108c SS |
4103 | puts_filtered ("Remote packet too long: "); |
4104 | puts_filtered (buf); | |
4105 | puts_filtered ("\n"); | |
4106 | ||
c2d11a7d | 4107 | return -1; |
c906108c SS |
4108 | } |
4109 | } | |
4110 | } | |
4111 | ||
4112 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4113 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4114 | this is used (in synchronous mode) to wait for a target that is is | |
4115 | executing user code to stop. */ | |
d9fcf2fb JM |
4116 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4117 | don't have to change all the calls to getpkt to deal with the | |
4118 | return value, because at the moment I don't know what the right | |
4119 | thing to do it for those. */ | |
c906108c | 4120 | void |
c2d11a7d JM |
4121 | getpkt (char *buf, |
4122 | long sizeof_buf, | |
4123 | int forever) | |
d9fcf2fb JM |
4124 | { |
4125 | int timed_out; | |
4126 | ||
4127 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4128 | } | |
4129 | ||
4130 | ||
4131 | /* Read a packet from the remote machine, with error checking, and | |
4132 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4133 | this is used (in synchronous mode) to wait for a target that is is | |
4134 | executing user code to stop. If FOREVER == 0, this function is | |
4135 | allowed to time out gracefully and return an indication of this to | |
4136 | the caller. */ | |
3172dc30 | 4137 | static int |
d9fcf2fb JM |
4138 | getpkt_sane (char *buf, |
4139 | long sizeof_buf, | |
4140 | int forever) | |
c906108c SS |
4141 | { |
4142 | int c; | |
4143 | int tries; | |
4144 | int timeout; | |
4145 | int val; | |
4146 | ||
c5aa993b | 4147 | strcpy (buf, "timeout"); |
c906108c SS |
4148 | |
4149 | if (forever) | |
4150 | { | |
c906108c | 4151 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4152 | } |
4153 | ||
4154 | else | |
4155 | timeout = remote_timeout; | |
4156 | ||
4157 | #define MAX_TRIES 3 | |
4158 | ||
4159 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4160 | { | |
4161 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4162 | continuously, but if it pauses, we'll get a zero from readchar |
4163 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4164 | |
4165 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4166 | After that, we expect characters to arrive at a brisk pace. They |
4167 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4168 | |
4169 | do | |
4170 | { | |
4171 | c = readchar (timeout); | |
4172 | ||
4173 | if (c == SERIAL_TIMEOUT) | |
4174 | { | |
2acceee2 | 4175 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4176 | { |
2acceee2 | 4177 | QUIT; |
c906108c SS |
4178 | target_mourn_inferior (); |
4179 | error ("Watchdog has expired. Target detached.\n"); | |
4180 | } | |
c906108c | 4181 | if (remote_debug) |
0f71a2f6 | 4182 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4183 | goto retry; |
4184 | } | |
4185 | } | |
4186 | while (c != '$'); | |
4187 | ||
4188 | /* We've found the start of a packet, now collect the data. */ | |
4189 | ||
c2d11a7d | 4190 | val = read_frame (buf, sizeof_buf); |
c906108c | 4191 | |
c2d11a7d | 4192 | if (val >= 0) |
c906108c SS |
4193 | { |
4194 | if (remote_debug) | |
43e526b9 JM |
4195 | { |
4196 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4197 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4198 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4199 | } | |
c906108c | 4200 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 4201 | return 0; |
c906108c SS |
4202 | } |
4203 | ||
4204 | /* Try the whole thing again. */ | |
4205 | retry: | |
4206 | SERIAL_WRITE (remote_desc, "-", 1); | |
4207 | } | |
4208 | ||
4209 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4210 | ||
4211 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4212 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4213 | return 1; |
c906108c SS |
4214 | } |
4215 | \f | |
4216 | static void | |
fba45db2 | 4217 | remote_kill (void) |
c906108c SS |
4218 | { |
4219 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4220 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4221 | if (kill_kludge) | |
4222 | { | |
4223 | kill_kludge = 0; | |
4224 | target_mourn_inferior (); | |
4225 | return; | |
4226 | } | |
4227 | ||
4228 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4229 | speaking terms with the remote system. */ | |
c5aa993b | 4230 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4231 | |
4232 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4233 | we do or not. For the existing stubs, kill is a noop. */ | |
4234 | target_mourn_inferior (); | |
4235 | } | |
4236 | ||
43ff13b4 JM |
4237 | /* Async version of remote_kill. */ |
4238 | static void | |
fba45db2 | 4239 | remote_async_kill (void) |
43ff13b4 JM |
4240 | { |
4241 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4242 | if (target_is_async_p ()) |
c2c6d25f | 4243 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4244 | |
4245 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4246 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4247 | if (kill_kludge) | |
4248 | { | |
4249 | kill_kludge = 0; | |
4250 | target_mourn_inferior (); | |
4251 | return; | |
4252 | } | |
4253 | ||
4254 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4255 | speaking terms with the remote system. */ | |
c5aa993b | 4256 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4257 | |
4258 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4259 | we do or not. For the existing stubs, kill is a noop. */ | |
4260 | target_mourn_inferior (); | |
4261 | } | |
4262 | ||
c906108c | 4263 | static void |
fba45db2 | 4264 | remote_mourn (void) |
c906108c SS |
4265 | { |
4266 | remote_mourn_1 (&remote_ops); | |
4267 | } | |
4268 | ||
53a5351d | 4269 | static void |
fba45db2 | 4270 | remote_async_mourn (void) |
53a5351d JM |
4271 | { |
4272 | remote_mourn_1 (&remote_async_ops); | |
4273 | } | |
4274 | ||
c906108c | 4275 | static void |
fba45db2 | 4276 | extended_remote_mourn (void) |
c906108c SS |
4277 | { |
4278 | /* We do _not_ want to mourn the target like this; this will | |
4279 | remove the extended remote target from the target stack, | |
4280 | and the next time the user says "run" it'll fail. | |
4281 | ||
4282 | FIXME: What is the right thing to do here? */ | |
4283 | #if 0 | |
4284 | remote_mourn_1 (&extended_remote_ops); | |
4285 | #endif | |
4286 | } | |
4287 | ||
4288 | /* Worker function for remote_mourn. */ | |
4289 | static void | |
fba45db2 | 4290 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4291 | { |
4292 | unpush_target (target); | |
4293 | generic_mourn_inferior (); | |
4294 | } | |
4295 | ||
4296 | /* In the extended protocol we want to be able to do things like | |
4297 | "run" and have them basically work as expected. So we need | |
4298 | a special create_inferior function. | |
4299 | ||
4300 | FIXME: One day add support for changing the exec file | |
4301 | we're debugging, arguments and an environment. */ | |
4302 | ||
4303 | static void | |
fba45db2 | 4304 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4305 | { |
4306 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4307 | the remote server. */ | |
4308 | remove_breakpoints (); | |
4309 | ||
4310 | /* Now restart the remote server. */ | |
4311 | extended_remote_restart (); | |
4312 | ||
4313 | /* Now put the breakpoints back in. This way we're safe if the | |
4314 | restart function works via a unix fork on the remote side. */ | |
4315 | insert_breakpoints (); | |
4316 | ||
4317 | /* Clean up from the last time we were running. */ | |
4318 | clear_proceed_status (); | |
4319 | ||
4320 | /* Let the remote process run. */ | |
4321 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4322 | } | |
4323 | ||
43ff13b4 JM |
4324 | /* Async version of extended_remote_create_inferior. */ |
4325 | static void | |
fba45db2 | 4326 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4327 | { |
4328 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4329 | the remote server. */ | |
4330 | remove_breakpoints (); | |
4331 | ||
4332 | /* If running asynchronously, register the target file descriptor | |
4333 | with the event loop. */ | |
2acceee2 JM |
4334 | if (event_loop_p && target_can_async_p ()) |
4335 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4336 | |
4337 | /* Now restart the remote server. */ | |
4338 | extended_remote_restart (); | |
4339 | ||
4340 | /* Now put the breakpoints back in. This way we're safe if the | |
4341 | restart function works via a unix fork on the remote side. */ | |
4342 | insert_breakpoints (); | |
4343 | ||
4344 | /* Clean up from the last time we were running. */ | |
4345 | clear_proceed_status (); | |
4346 | ||
4347 | /* Let the remote process run. */ | |
4348 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4349 | } | |
c906108c | 4350 | \f |
c5aa993b | 4351 | |
c906108c SS |
4352 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4353 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4354 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4355 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4356 | the standard routines that are in mem-break.c. */ | |
4357 | ||
4358 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4359 | the choice of breakpoint instruction affects target program design and | |
4360 | vice versa, and by making it user-tweakable, the special code here | |
4361 | goes away and we need fewer special GDB configurations. */ | |
4362 | ||
4363 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4364 | #define REMOTE_BREAKPOINT | |
4365 | #endif | |
4366 | ||
4367 | #ifdef REMOTE_BREAKPOINT | |
4368 | ||
4369 | /* If the target isn't bi-endian, just pretend it is. */ | |
4370 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4371 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4372 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4373 | #endif | |
4374 | ||
4375 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4376 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4377 | ||
4378 | #endif /* REMOTE_BREAKPOINT */ | |
4379 | ||
4380 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4381 | support. We read the contents of the target location and stash it, | |
4382 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4383 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4384 | memory allocated for saving the target contents. It is guaranteed | |
4385 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4386 | is accomplished via BREAKPOINT_MAX). */ | |
4387 | ||
4388 | static int | |
fba45db2 | 4389 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
4390 | { |
4391 | #ifdef REMOTE_BREAKPOINT | |
4392 | int val; | |
96baa820 JM |
4393 | #endif |
4394 | int bp_size; | |
4395 | ||
d471ea57 AC |
4396 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4397 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4398 | fails, and the user has explicitly requested the Z support then | |
4399 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4400 | |
d471ea57 | 4401 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4402 | { |
e514a9d6 JM |
4403 | char *buf = alloca (PBUFSIZ); |
4404 | char *p = buf; | |
96baa820 JM |
4405 | |
4406 | addr = remote_address_masked (addr); | |
4407 | *(p++) = 'Z'; | |
4408 | *(p++) = '0'; | |
4409 | *(p++) = ','; | |
4410 | p += hexnumstr (p, (ULONGEST) addr); | |
4411 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4412 | sprintf (p, ",%d", bp_size); | |
4413 | ||
4414 | putpkt (buf); | |
c2d11a7d | 4415 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4416 | |
d471ea57 | 4417 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4418 | { |
d471ea57 AC |
4419 | case PACKET_ERROR: |
4420 | return -1; | |
4421 | case PACKET_OK: | |
4422 | return 0; | |
4423 | case PACKET_UNKNOWN: | |
4424 | break; | |
96baa820 JM |
4425 | } |
4426 | } | |
c906108c | 4427 | |
96baa820 | 4428 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4429 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4430 | ||
4431 | if (val == 0) | |
4432 | { | |
4433 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4434 | val = target_write_memory (addr, (char *) big_break_insn, | |
4435 | sizeof big_break_insn); | |
4436 | else | |
4437 | val = target_write_memory (addr, (char *) little_break_insn, | |
4438 | sizeof little_break_insn); | |
4439 | } | |
4440 | ||
4441 | return val; | |
4442 | #else | |
4443 | return memory_insert_breakpoint (addr, contents_cache); | |
4444 | #endif /* REMOTE_BREAKPOINT */ | |
4445 | } | |
4446 | ||
4447 | static int | |
fba45db2 | 4448 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4449 | { |
96baa820 JM |
4450 | int bp_size; |
4451 | ||
d471ea57 | 4452 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4453 | { |
e514a9d6 JM |
4454 | char *buf = alloca (PBUFSIZ); |
4455 | char *p = buf; | |
96baa820 JM |
4456 | |
4457 | *(p++) = 'z'; | |
4458 | *(p++) = '0'; | |
4459 | *(p++) = ','; | |
4460 | ||
4461 | addr = remote_address_masked (addr); | |
4462 | p += hexnumstr (p, (ULONGEST) addr); | |
4463 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4464 | sprintf (p, ",%d", bp_size); | |
4465 | ||
4466 | putpkt (buf); | |
c2d11a7d | 4467 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4468 | |
4469 | return (buf[0] == 'E'); | |
4470 | } | |
4471 | ||
c906108c SS |
4472 | #ifdef REMOTE_BREAKPOINT |
4473 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4474 | #else | |
4475 | return memory_remove_breakpoint (addr, contents_cache); | |
4476 | #endif /* REMOTE_BREAKPOINT */ | |
4477 | } | |
4478 | ||
d471ea57 AC |
4479 | static int |
4480 | watchpoint_to_Z_packet (int type) | |
4481 | { | |
4482 | switch (type) | |
4483 | { | |
4484 | case hw_write: | |
4485 | return 2; | |
4486 | break; | |
4487 | case hw_read: | |
4488 | return 3; | |
4489 | break; | |
4490 | case hw_access: | |
4491 | return 4; | |
4492 | break; | |
4493 | default: | |
8e65ff28 AC |
4494 | internal_error (__FILE__, __LINE__, |
4495 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4496 | } |
4497 | } | |
4498 | ||
4499 | /* FIXME: This function should be static and a member of the remote | |
4500 | target vector. */ | |
4501 | ||
96baa820 | 4502 | int |
fba45db2 | 4503 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4504 | { |
e514a9d6 JM |
4505 | char *buf = alloca (PBUFSIZ); |
4506 | char *p; | |
d471ea57 | 4507 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4508 | |
d471ea57 AC |
4509 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4510 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4511 | remote_protocol_Z[packet].name, | |
4512 | remote_protocol_Z[packet].title); | |
96baa820 | 4513 | |
d471ea57 | 4514 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4515 | p = strchr (buf, '\0'); |
4516 | addr = remote_address_masked (addr); | |
4517 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4518 | sprintf (p, ",%x", len); |
96baa820 JM |
4519 | |
4520 | putpkt (buf); | |
c2d11a7d | 4521 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4522 | |
d471ea57 AC |
4523 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4524 | { | |
4525 | case PACKET_ERROR: | |
4526 | case PACKET_UNKNOWN: | |
4527 | return -1; | |
4528 | case PACKET_OK: | |
4529 | return 0; | |
4530 | } | |
8e65ff28 AC |
4531 | internal_error (__FILE__, __LINE__, |
4532 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4533 | } |
4534 | ||
d471ea57 AC |
4535 | /* FIXME: This function should be static and a member of the remote |
4536 | target vector. */ | |
4537 | ||
96baa820 | 4538 | int |
fba45db2 | 4539 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4540 | { |
e514a9d6 JM |
4541 | char *buf = alloca (PBUFSIZ); |
4542 | char *p; | |
d471ea57 AC |
4543 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4544 | ||
4545 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4546 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4547 | remote_protocol_Z[packet].name, | |
4548 | remote_protocol_Z[packet].title); | |
96baa820 | 4549 | |
d471ea57 | 4550 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4551 | p = strchr (buf, '\0'); |
4552 | addr = remote_address_masked (addr); | |
4553 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4554 | sprintf (p, ",%x", len); |
96baa820 | 4555 | putpkt (buf); |
c2d11a7d | 4556 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4557 | |
d471ea57 AC |
4558 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4559 | { | |
4560 | case PACKET_ERROR: | |
4561 | case PACKET_UNKNOWN: | |
4562 | return -1; | |
4563 | case PACKET_OK: | |
4564 | return 0; | |
4565 | } | |
8e65ff28 AC |
4566 | internal_error (__FILE__, __LINE__, |
4567 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4568 | } |
4569 | ||
d471ea57 AC |
4570 | /* FIXME: This function should be static and a member of the remote |
4571 | target vector. */ | |
4572 | ||
96baa820 | 4573 | int |
fba45db2 | 4574 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4575 | { |
e514a9d6 JM |
4576 | char *buf = alloca (PBUFSIZ); |
4577 | char *p = buf; | |
96baa820 | 4578 | |
d471ea57 AC |
4579 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4580 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4581 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4582 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4583 | ||
96baa820 JM |
4584 | *(p++) = 'Z'; |
4585 | *(p++) = '1'; | |
4586 | *(p++) = ','; | |
4587 | ||
4588 | addr = remote_address_masked (addr); | |
4589 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4590 | sprintf (p, ",%x", len); |
96baa820 JM |
4591 | |
4592 | putpkt (buf); | |
c2d11a7d | 4593 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4594 | |
d471ea57 AC |
4595 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4596 | { | |
4597 | case PACKET_ERROR: | |
4598 | case PACKET_UNKNOWN: | |
4599 | return -1; | |
4600 | case PACKET_OK: | |
4601 | return 0; | |
4602 | } | |
8e65ff28 AC |
4603 | internal_error (__FILE__, __LINE__, |
4604 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4605 | } |
4606 | ||
d471ea57 AC |
4607 | /* FIXME: This function should be static and a member of the remote |
4608 | target vector. */ | |
4609 | ||
96baa820 | 4610 | int |
fba45db2 | 4611 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4612 | { |
e514a9d6 JM |
4613 | char *buf = alloca (PBUFSIZ); |
4614 | char *p = buf; | |
96baa820 | 4615 | |
d471ea57 AC |
4616 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4617 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4618 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4619 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4620 | ||
96baa820 JM |
4621 | *(p++) = 'z'; |
4622 | *(p++) = '1'; | |
4623 | *(p++) = ','; | |
4624 | ||
4625 | addr = remote_address_masked (addr); | |
4626 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4627 | sprintf (p, ",%x", len); |
96baa820 JM |
4628 | |
4629 | putpkt(buf); | |
c2d11a7d | 4630 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4631 | |
d471ea57 AC |
4632 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4633 | { | |
4634 | case PACKET_ERROR: | |
4635 | case PACKET_UNKNOWN: | |
4636 | return -1; | |
4637 | case PACKET_OK: | |
4638 | return 0; | |
4639 | } | |
8e65ff28 AC |
4640 | internal_error (__FILE__, __LINE__, |
4641 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4642 | } |
96baa820 | 4643 | |
c906108c SS |
4644 | /* Some targets are only capable of doing downloads, and afterwards |
4645 | they switch to the remote serial protocol. This function provides | |
4646 | a clean way to get from the download target to the remote target. | |
4647 | It's basically just a wrapper so that we don't have to expose any | |
4648 | of the internal workings of remote.c. | |
4649 | ||
4650 | Prior to calling this routine, you should shutdown the current | |
4651 | target code, else you will get the "A program is being debugged | |
4652 | already..." message. Usually a call to pop_target() suffices. */ | |
4653 | ||
4654 | void | |
fba45db2 | 4655 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4656 | { |
4657 | printf_filtered ("Switching to remote protocol\n"); | |
4658 | remote_open (name, from_tty); | |
4659 | } | |
4660 | ||
4661 | /* Other targets want to use the entire remote serial module but with | |
4662 | certain remote_ops overridden. */ | |
4663 | ||
4664 | void | |
fba45db2 KB |
4665 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4666 | int extended_p) | |
c906108c SS |
4667 | { |
4668 | printf_filtered ("Selecting the %sremote protocol\n", | |
4669 | (extended_p ? "extended-" : "")); | |
4670 | remote_open_1 (name, from_tty, target, extended_p); | |
4671 | } | |
4672 | ||
4673 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4674 | ||
c5aa993b JM |
4675 | static unsigned long crc32_table[256] = |
4676 | {0, 0}; | |
c906108c SS |
4677 | |
4678 | static unsigned long | |
fba45db2 | 4679 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4680 | { |
c5aa993b | 4681 | if (!crc32_table[1]) |
c906108c SS |
4682 | { |
4683 | /* Initialize the CRC table and the decoding table. */ | |
4684 | int i, j; | |
4685 | unsigned int c; | |
4686 | ||
4687 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4688 | { |
4689 | for (c = i << 24, j = 8; j > 0; --j) | |
4690 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4691 | crc32_table[i] = c; | |
4692 | } | |
c906108c SS |
4693 | } |
4694 | ||
4695 | while (len--) | |
4696 | { | |
4697 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4698 | buf++; | |
4699 | } | |
4700 | return crc; | |
4701 | } | |
4702 | ||
4703 | /* compare-sections command | |
4704 | ||
4705 | With no arguments, compares each loadable section in the exec bfd | |
4706 | with the same memory range on the target, and reports mismatches. | |
4707 | Useful for verifying the image on the target against the exec file. | |
4708 | Depends on the target understanding the new "qCRC:" request. */ | |
4709 | ||
e514a9d6 JM |
4710 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4711 | target method (target verify memory) and generic version of the | |
4712 | actual command. This will allow other high-level code (especially | |
4713 | generic_load()) to make use of this target functionality. */ | |
4714 | ||
c906108c | 4715 | static void |
fba45db2 | 4716 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
4717 | { |
4718 | asection *s; | |
4719 | unsigned long host_crc, target_crc; | |
4720 | extern bfd *exec_bfd; | |
4721 | struct cleanup *old_chain; | |
085dd6e6 JM |
4722 | char *tmp; |
4723 | char *sectdata; | |
ce359b09 | 4724 | const char *sectname; |
085dd6e6 | 4725 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
4726 | bfd_size_type size; |
4727 | bfd_vma lma; | |
4728 | int matched = 0; | |
4729 | int mismatched = 0; | |
4730 | ||
4731 | if (!exec_bfd) | |
4732 | error ("command cannot be used without an exec file"); | |
4733 | if (!current_target.to_shortname || | |
4734 | strcmp (current_target.to_shortname, "remote") != 0) | |
4735 | error ("command can only be used with remote target"); | |
4736 | ||
c5aa993b | 4737 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4738 | { |
4739 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4740 | continue; /* skip non-loadable section */ |
c906108c SS |
4741 | |
4742 | size = bfd_get_section_size_before_reloc (s); | |
4743 | if (size == 0) | |
c5aa993b | 4744 | continue; /* skip zero-length section */ |
c906108c | 4745 | |
ce359b09 | 4746 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4747 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4748 | continue; /* not the section selected by user */ |
c906108c | 4749 | |
c5aa993b | 4750 | matched = 1; /* do this section */ |
c906108c SS |
4751 | lma = s->lma; |
4752 | /* FIXME: assumes lma can fit into long */ | |
4753 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4754 | putpkt (buf); | |
4755 | ||
4756 | /* be clever; compute the host_crc before waiting for target reply */ | |
4757 | sectdata = xmalloc (size); | |
b8c9b27d | 4758 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4759 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4760 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4761 | ||
c2d11a7d | 4762 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4763 | if (buf[0] == 'E') |
4764 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4765 | sectname, lma, lma + size); | |
4766 | if (buf[0] != 'C') | |
4767 | error ("remote target does not support this operation"); | |
4768 | ||
4769 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4770 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4771 | ||
d4f3574e SS |
4772 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4773 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4774 | if (host_crc == target_crc) |
4775 | printf_filtered ("matched.\n"); | |
4776 | else | |
c5aa993b JM |
4777 | { |
4778 | printf_filtered ("MIS-MATCHED!\n"); | |
4779 | mismatched++; | |
4780 | } | |
c906108c SS |
4781 | |
4782 | do_cleanups (old_chain); | |
4783 | } | |
4784 | if (mismatched > 0) | |
4785 | warning ("One or more sections of the remote executable does not match\n\ | |
4786 | the loaded file\n"); | |
4787 | if (args && !matched) | |
4788 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4789 | } | |
4790 | ||
4791 | static int | |
fba45db2 | 4792 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c SS |
4793 | { |
4794 | int i; | |
085dd6e6 | 4795 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4796 | char *p2 = &buf2[0]; |
c906108c | 4797 | |
c5aa993b | 4798 | if (!bufsiz) |
c906108c SS |
4799 | error ("null pointer to remote bufer size specified"); |
4800 | ||
cce74817 | 4801 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4802 | the caller know and return what the minimum size is */ |
4803 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4804 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4805 | { |
4806 | *bufsiz = PBUFSIZ; | |
4807 | return -1; | |
4808 | } | |
4809 | ||
4810 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4811 | if (!remote_desc) |
c906108c SS |
4812 | error ("remote query is only available after target open"); |
4813 | ||
4814 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4815 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4816 | error ("invalid remote query type"); |
4817 | ||
c5aa993b | 4818 | if (!buf) |
c906108c SS |
4819 | error ("null remote query specified"); |
4820 | ||
c5aa993b | 4821 | if (!outbuf) |
c906108c SS |
4822 | error ("remote query requires a buffer to receive data"); |
4823 | ||
4824 | outbuf[0] = '\0'; | |
4825 | ||
4826 | *p2++ = 'q'; | |
4827 | *p2++ = query_type; | |
4828 | ||
4829 | /* we used one buffer char for the remote protocol q command and another | |
4830 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4831 | plus one extra in case we are debugging (remote_debug), | |
4832 | we have PBUFZIZ - 7 left to pack the query string */ | |
4833 | i = 0; | |
c5aa993b | 4834 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4835 | { |
4836 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4837 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4838 | error ("illegal characters in query string"); | |
c906108c SS |
4839 | |
4840 | *p2++ = buf[i]; | |
4841 | i++; | |
4842 | } | |
4843 | *p2 = buf[i]; | |
4844 | ||
c5aa993b | 4845 | if (buf[i]) |
c906108c SS |
4846 | error ("query larger than available buffer"); |
4847 | ||
4848 | i = putpkt (buf2); | |
c5aa993b JM |
4849 | if (i < 0) |
4850 | return i; | |
c906108c | 4851 | |
c2d11a7d | 4852 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4853 | |
4854 | return 0; | |
4855 | } | |
4856 | ||
96baa820 JM |
4857 | static void |
4858 | remote_rcmd (char *command, | |
d9fcf2fb | 4859 | struct ui_file *outbuf) |
96baa820 JM |
4860 | { |
4861 | int i; | |
4862 | char *buf = alloca (PBUFSIZ); | |
4863 | char *p = buf; | |
4864 | ||
4865 | if (!remote_desc) | |
4866 | error ("remote rcmd is only available after target open"); | |
4867 | ||
7be570e7 JM |
4868 | /* Send a NULL command across as an empty command */ |
4869 | if (command == NULL) | |
4870 | command = ""; | |
4871 | ||
96baa820 JM |
4872 | /* The query prefix */ |
4873 | strcpy (buf, "qRcmd,"); | |
4874 | p = strchr (buf, '\0'); | |
4875 | ||
4876 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4877 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4878 | ||
4879 | /* Encode the actual command */ | |
4880 | for (i = 0; command[i]; i++) | |
4881 | { | |
4882 | *p++ = tohex ((command[i] >> 4) & 0xf); | |
4883 | *p++ = tohex (command[i] & 0xf); | |
4884 | } | |
4885 | *p = '\0'; | |
4886 | ||
4887 | if (putpkt (buf) < 0) | |
4888 | error ("Communication problem with target\n"); | |
4889 | ||
4890 | /* get/display the response */ | |
4891 | while (1) | |
4892 | { | |
4893 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4894 | buf[0] = '\0'; | |
c2d11a7d | 4895 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4896 | if (buf[0] == '\0') |
4897 | error ("Target does not support this command\n"); | |
4898 | if (buf[0] == 'O' && buf[1] != 'K') | |
4899 | { | |
4900 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4901 | continue; | |
4902 | } | |
4903 | if (strcmp (buf, "OK") == 0) | |
4904 | break; | |
7be570e7 JM |
4905 | if (strlen (buf) == 3 && buf[0] == 'E' |
4906 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4907 | { | |
4908 | error ("Protocol error with Rcmd"); | |
4909 | } | |
96baa820 JM |
4910 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4911 | { | |
4912 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4913 | fputc_unfiltered (c, outbuf); | |
4914 | } | |
4915 | break; | |
4916 | } | |
4917 | } | |
4918 | ||
c906108c | 4919 | static void |
fba45db2 | 4920 | packet_command (char *args, int from_tty) |
c906108c | 4921 | { |
085dd6e6 | 4922 | char *buf = alloca (PBUFSIZ); |
c906108c | 4923 | |
c5aa993b | 4924 | if (!remote_desc) |
c906108c SS |
4925 | error ("command can only be used with remote target"); |
4926 | ||
c5aa993b | 4927 | if (!args) |
c906108c SS |
4928 | error ("remote-packet command requires packet text as argument"); |
4929 | ||
4930 | puts_filtered ("sending: "); | |
4931 | print_packet (args); | |
4932 | puts_filtered ("\n"); | |
4933 | putpkt (args); | |
4934 | ||
c2d11a7d | 4935 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4936 | puts_filtered ("received: "); |
4937 | print_packet (buf); | |
4938 | puts_filtered ("\n"); | |
4939 | } | |
4940 | ||
4941 | #if 0 | |
4942 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4943 | ||
a14ed312 | 4944 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4945 | |
a14ed312 | 4946 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4947 | |
a14ed312 | 4948 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4949 | |
a14ed312 | 4950 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4951 | |
a14ed312 | 4952 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4953 | |
a14ed312 | 4954 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4955 | |
a14ed312 | 4956 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 4957 | |
a14ed312 | 4958 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4959 | |
a14ed312 | 4960 | static void init_remote_threadtests (void); |
c906108c | 4961 | |
c5aa993b | 4962 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4963 | |
4964 | static void | |
fba45db2 | 4965 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
4966 | { |
4967 | int sample_thread = SAMPLE_THREAD; | |
4968 | ||
4969 | printf_filtered ("Remote threadset test\n"); | |
4970 | set_thread (sample_thread, 1); | |
4971 | } | |
4972 | ||
4973 | ||
4974 | static void | |
fba45db2 | 4975 | threadalive_test (char *cmd, int tty) |
c906108c SS |
4976 | { |
4977 | int sample_thread = SAMPLE_THREAD; | |
4978 | ||
4979 | if (remote_thread_alive (sample_thread)) | |
4980 | printf_filtered ("PASS: Thread alive test\n"); | |
4981 | else | |
4982 | printf_filtered ("FAIL: Thread alive test\n"); | |
4983 | } | |
4984 | ||
a14ed312 | 4985 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
4986 | |
4987 | void | |
fba45db2 | 4988 | output_threadid (char *title, threadref *ref) |
c906108c SS |
4989 | { |
4990 | char hexid[20]; | |
4991 | ||
4992 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4993 | hexid[16] = 0; | |
4994 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4995 | } | |
4996 | ||
4997 | static void | |
fba45db2 | 4998 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
4999 | { |
5000 | int startflag = 1; | |
5001 | threadref nextthread; | |
5002 | int done, result_count; | |
5003 | threadref threadlist[3]; | |
5004 | ||
5005 | printf_filtered ("Remote Threadlist test\n"); | |
5006 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5007 | &result_count, &threadlist[0])) | |
5008 | printf_filtered ("FAIL: threadlist test\n"); | |
5009 | else | |
5010 | { | |
5011 | threadref *scan = threadlist; | |
5012 | threadref *limit = scan + result_count; | |
5013 | ||
5014 | while (scan < limit) | |
5015 | output_threadid (" thread ", scan++); | |
5016 | } | |
5017 | } | |
5018 | ||
5019 | void | |
fba45db2 | 5020 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5021 | { |
5022 | output_threadid ("Threadid: ", &info->threadid); | |
5023 | printf_filtered ("Name: %s\n ", info->shortname); | |
5024 | printf_filtered ("State: %s\n", info->display); | |
5025 | printf_filtered ("other: %s\n\n", info->more_display); | |
5026 | } | |
5027 | ||
5028 | int | |
fba45db2 | 5029 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5030 | { |
5031 | int result; | |
5032 | int set; | |
5033 | struct gdb_ext_thread_info threadinfo; | |
5034 | ||
5035 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5036 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5037 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5038 | display_thread_info (&threadinfo); | |
5039 | return result; | |
5040 | } | |
5041 | ||
5042 | static void | |
fba45db2 | 5043 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5044 | { |
5045 | int athread = SAMPLE_THREAD; | |
5046 | threadref thread; | |
5047 | int set; | |
5048 | ||
5049 | int_to_threadref (&thread, athread); | |
5050 | printf_filtered ("Remote Threadinfo test\n"); | |
5051 | if (!get_and_display_threadinfo (&thread)) | |
5052 | printf_filtered ("FAIL cannot get thread info\n"); | |
5053 | } | |
5054 | ||
5055 | static int | |
fba45db2 | 5056 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5057 | { |
5058 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5059 | return get_and_display_threadinfo (ref); | |
5060 | } | |
5061 | ||
5062 | static void | |
fba45db2 | 5063 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5064 | { |
5065 | printf_filtered ("Remote Threadlist update test\n"); | |
5066 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5067 | } | |
5068 | ||
5069 | static void | |
5070 | init_remote_threadtests (void) | |
5071 | { | |
5072 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5073 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5074 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5075 | "Fetch and display info about one thread"); | |
5076 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5077 | "Test setting to a different thread"); | |
5078 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5079 | "Iterate through updating all remote thread info"); | |
5080 | add_com ("talive", class_obscure, threadalive_test, | |
5081 | " Remote thread alive test "); | |
5082 | } | |
5083 | ||
5084 | #endif /* 0 */ | |
5085 | ||
5086 | static void | |
fba45db2 | 5087 | init_remote_ops (void) |
c906108c | 5088 | { |
c5aa993b | 5089 | remote_ops.to_shortname = "remote"; |
c906108c | 5090 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5091 | remote_ops.to_doc = |
c906108c | 5092 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5093 | Specify the serial device it is connected to\n\ |
5094 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5095 | remote_ops.to_open = remote_open; |
5096 | remote_ops.to_close = remote_close; | |
c906108c | 5097 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5098 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5099 | remote_ops.to_wait = remote_wait; |
5100 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5101 | remote_ops.to_store_registers = remote_store_registers; | |
5102 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5103 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5104 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5105 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5106 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5107 | remote_ops.to_kill = remote_kill; |
5108 | remote_ops.to_load = generic_load; | |
c906108c SS |
5109 | remote_ops.to_mourn_inferior = remote_mourn; |
5110 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5111 | remote_ops.to_find_new_threads = remote_threads_info; |
9d1f7ab2 | 5112 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5113 | remote_ops.to_stop = remote_stop; |
5114 | remote_ops.to_query = remote_query; | |
96baa820 | 5115 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5116 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5117 | remote_ops.to_has_all_memory = 1; |
5118 | remote_ops.to_has_memory = 1; | |
5119 | remote_ops.to_has_stack = 1; | |
5120 | remote_ops.to_has_registers = 1; | |
5121 | remote_ops.to_has_execution = 1; | |
5122 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5123 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5124 | } |
5125 | ||
5126 | /* Set up the extended remote vector by making a copy of the standard | |
5127 | remote vector and adding to it. */ | |
5128 | ||
5129 | static void | |
fba45db2 | 5130 | init_extended_remote_ops (void) |
c906108c SS |
5131 | { |
5132 | extended_remote_ops = remote_ops; | |
5133 | ||
0f71a2f6 | 5134 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5135 | extended_remote_ops.to_longname = |
c906108c | 5136 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5137 | extended_remote_ops.to_doc = |
c906108c SS |
5138 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5139 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5140 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5141 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5142 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5143 | } |
5144 | ||
5145 | /* | |
5146 | * Command: info remote-process | |
5147 | * | |
5148 | * This implements Cisco's version of the "info proc" command. | |
5149 | * | |
5150 | * This query allows the target stub to return an arbitrary string | |
5151 | * (or strings) giving arbitrary information about the target process. | |
5152 | * This is optional; the target stub isn't required to implement it. | |
5153 | * | |
5154 | * Syntax: qfProcessInfo request first string | |
5155 | * qsProcessInfo request subsequent string | |
5156 | * reply: 'O'<hex-encoded-string> | |
5157 | * 'l' last reply (empty) | |
5158 | */ | |
5159 | ||
5160 | static void | |
c2d11a7d | 5161 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5162 | { |
085dd6e6 | 5163 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
5164 | |
5165 | if (remote_desc == 0) | |
5166 | error ("Command can only be used when connected to the remote target."); | |
5167 | ||
5168 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 5169 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 5170 | if (buf[0] == 0) |
c5aa993b | 5171 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5172 | |
5173 | if (buf[0] == 'E') | |
5174 | error ("info proc: target error."); | |
5175 | ||
c5aa993b | 5176 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5177 | { |
5178 | remote_console_output (&buf[1]); | |
5179 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 5180 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
5181 | } |
5182 | } | |
5183 | ||
5184 | /* | |
5185 | * Target Cisco | |
5186 | */ | |
5187 | ||
5188 | static void | |
c2d11a7d | 5189 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5190 | { |
5191 | if (name == 0) | |
5192 | error ( | |
c5aa993b | 5193 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5194 | device is attached to the remote system (e.g. host:port)."); |
5195 | ||
6426a772 JM |
5196 | /* See FIXME above */ |
5197 | wait_forever_enabled_p = 1; | |
5198 | ||
0f71a2f6 JM |
5199 | target_preopen (from_tty); |
5200 | ||
5201 | unpush_target (&remote_cisco_ops); | |
5202 | ||
0f71a2f6 JM |
5203 | remote_desc = SERIAL_OPEN (name); |
5204 | if (!remote_desc) | |
5205 | perror_with_name (name); | |
5206 | ||
5207 | /* | |
5208 | * If a baud rate was specified on the gdb command line it will | |
5209 | * be greater than the initial value of -1. If it is, use it otherwise | |
5210 | * default to 9600 | |
5211 | */ | |
5212 | ||
5213 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5214 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5215 | { |
5216 | SERIAL_CLOSE (remote_desc); | |
5217 | perror_with_name (name); | |
5218 | } | |
5219 | ||
5220 | SERIAL_RAW (remote_desc); | |
5221 | ||
5222 | /* If there is something sitting in the buffer we might take it as a | |
5223 | response to a command, which would be bad. */ | |
5224 | SERIAL_FLUSH_INPUT (remote_desc); | |
5225 | ||
5226 | if (from_tty) | |
5227 | { | |
5228 | puts_filtered ("Remote debugging using "); | |
5229 | puts_filtered (name); | |
5230 | puts_filtered ("\n"); | |
5231 | } | |
5232 | ||
5233 | remote_cisco_mode = 1; | |
5234 | ||
5235 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5236 | ||
d471ea57 | 5237 | init_all_packet_configs (); |
0f71a2f6 | 5238 | |
c5aa993b | 5239 | general_thread = -2; |
0f71a2f6 JM |
5240 | continue_thread = -2; |
5241 | ||
9d1f7ab2 MS |
5242 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5243 | use_threadinfo_query = 1; | |
5244 | use_threadextra_query = 1; | |
5245 | ||
0f71a2f6 JM |
5246 | /* Without this, some commands which require an active target (such |
5247 | as kill) won't work. This variable serves (at least) double duty | |
5248 | as both the pid of the target process (if it has such), and as a | |
5249 | flag indicating that a target is active. These functions should | |
5250 | be split out into seperate variables, especially since GDB will | |
5251 | someday have a notion of debugging several processes. */ | |
5252 | inferior_pid = MAGIC_NULL_PID; | |
5253 | ||
5254 | /* Start the remote connection; if error (0), discard this target. */ | |
5255 | ||
c5aa993b JM |
5256 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5257 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5258 | RETURN_MASK_ALL)) |
5259 | { | |
5260 | pop_target (); | |
5261 | return; | |
5262 | } | |
5263 | } | |
5264 | ||
5265 | static void | |
c2d11a7d | 5266 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5267 | { |
5268 | remote_cisco_mode = 0; | |
5269 | remote_close (quitting); | |
5270 | } | |
5271 | ||
c5aa993b | 5272 | static void |
8ab86381 | 5273 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5274 | { |
5275 | remote_mourn_1 (&remote_cisco_ops); | |
5276 | } | |
5277 | ||
c5aa993b JM |
5278 | enum |
5279 | { | |
5280 | READ_MORE, | |
5281 | FATAL_ERROR, | |
5282 | ENTER_DEBUG, | |
0f71a2f6 | 5283 | DISCONNECT_TELNET |
c5aa993b JM |
5284 | } |
5285 | minitelnet_return; | |
0f71a2f6 JM |
5286 | |
5287 | /* shared between readsocket() and readtty() */ | |
5288 | static char *tty_input; | |
5289 | ||
5290 | static int escape_count; | |
5291 | static int echo_check; | |
5292 | extern int quit_flag; | |
5293 | ||
5294 | static int | |
c2d11a7d | 5295 | readsocket (void) |
0f71a2f6 JM |
5296 | { |
5297 | int data; | |
5298 | ||
5299 | /* Loop until the socket doesn't have any more data */ | |
5300 | ||
c5aa993b | 5301 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5302 | { |
5303 | /* Check for the escape sequence */ | |
c5aa993b | 5304 | if (data == '|') |
0f71a2f6 JM |
5305 | { |
5306 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5307 | if (++escape_count == 4) |
0f71a2f6 JM |
5308 | { |
5309 | return ENTER_DEBUG; | |
5310 | } | |
c5aa993b JM |
5311 | else |
5312 | { /* This is a '|', but not the fourth in a row. | |
5313 | Continue without echoing it. If it isn't actually | |
5314 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5315 | continue; |
5316 | } | |
5317 | } | |
c5aa993b JM |
5318 | else |
5319 | /* Not a '|' */ | |
5320 | { | |
0f71a2f6 JM |
5321 | /* Ensure any pending '|'s are flushed. */ |
5322 | ||
c5aa993b JM |
5323 | for (; escape_count > 0; escape_count--) |
5324 | putchar ('|'); | |
0f71a2f6 | 5325 | } |
0f71a2f6 | 5326 | |
c5aa993b JM |
5327 | if (data == '\r') /* If this is a return character, */ |
5328 | continue; /* - just supress it. */ | |
5329 | ||
5330 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5331 | { |
5332 | if (tty_input[echo_check] == data) | |
5333 | { | |
c5aa993b JM |
5334 | echo_check++; /* Character matched user input: */ |
5335 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5336 | } |
c5aa993b JM |
5337 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5338 | { /* End of the line (and of echo checking). */ | |
5339 | echo_check = -1; /* No more echo supression */ | |
5340 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5341 | } |
5342 | else | |
c5aa993b JM |
5343 | { /* Failed check for echo of user input. |
5344 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5345 | int j; |
5346 | ||
c5aa993b | 5347 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5348 | putchar (tty_input[j]); |
5349 | echo_check = -1; | |
5350 | } | |
5351 | } | |
c5aa993b | 5352 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5353 | } |
5354 | ||
c5aa993b JM |
5355 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5356 | return READ_MORE; /* Try to read some more */ | |
5357 | else | |
5358 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5359 | } |
5360 | ||
5361 | static int | |
c2d11a7d | 5362 | readtty (void) |
0f71a2f6 | 5363 | { |
0f71a2f6 JM |
5364 | int tty_bytecount; |
5365 | ||
5366 | /* First, read a buffer full from the terminal */ | |
5367 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5368 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5369 | { |
5370 | perror ("readtty: read failed"); | |
5371 | return FATAL_ERROR; | |
5372 | } | |
5373 | ||
5374 | /* Remove a quoted newline. */ | |
5375 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5376 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5377 | { | |
c5aa993b JM |
5378 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5379 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5380 | } |
5381 | ||
5382 | /* Turn trailing newlines into returns */ | |
5383 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5384 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5385 | |
5386 | /* If the line consists of a ~, enter debugging mode. */ | |
5387 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5388 | return ENTER_DEBUG; | |
5389 | ||
5390 | /* Make this a zero terminated string and write it out */ | |
5391 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5392 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5393 | { |
5394 | perror_with_name ("readtty: write failed"); | |
5395 | return FATAL_ERROR; | |
5396 | } | |
5397 | ||
5398 | return READ_MORE; | |
5399 | } | |
5400 | ||
5401 | static int | |
c2d11a7d | 5402 | minitelnet (void) |
0f71a2f6 JM |
5403 | { |
5404 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5405 | int tablesize; /* max number of FDs for select */ |
5406 | int status; | |
5407 | int quit_count = 0; | |
0f71a2f6 JM |
5408 | |
5409 | extern int escape_count; /* global shared by readsocket */ | |
5410 | extern int echo_check; /* ditto */ | |
5411 | ||
5412 | escape_count = 0; | |
c5aa993b | 5413 | echo_check = -1; |
0f71a2f6 JM |
5414 | |
5415 | tablesize = 8 * sizeof (input); | |
5416 | ||
c5aa993b | 5417 | for (;;) |
0f71a2f6 JM |
5418 | { |
5419 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5420 | this must be done *before* the select as there may be |
5421 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5422 | |
c5aa993b | 5423 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5424 | { |
5425 | error ("Debugging terminated by communications error"); | |
5426 | } | |
c5aa993b | 5427 | else if (status != READ_MORE) |
0f71a2f6 JM |
5428 | { |
5429 | return (status); | |
5430 | } | |
5431 | ||
c5aa993b | 5432 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5433 | |
5434 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5435 | |
0f71a2f6 | 5436 | FD_ZERO (&input); |
c5aa993b | 5437 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5438 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5439 | |
5440 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5441 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5442 | { |
5443 | error ("Communications error on select %d", errno); | |
5444 | } | |
5445 | ||
5446 | /* Handle Control-C typed */ | |
5447 | ||
c5aa993b | 5448 | if (quit_flag) |
0f71a2f6 JM |
5449 | { |
5450 | if ((++quit_count) == 2) | |
5451 | { | |
5452 | if (query ("Interrupt GDB? ")) | |
5453 | { | |
5454 | printf_filtered ("Interrupted by user.\n"); | |
5455 | return_to_top_level (RETURN_QUIT); | |
5456 | } | |
5457 | quit_count = 0; | |
5458 | } | |
5459 | quit_flag = 0; | |
5460 | ||
5461 | if (remote_break) | |
5462 | SERIAL_SEND_BREAK (remote_desc); | |
5463 | else | |
5464 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5465 | ||
5466 | continue; | |
5467 | } | |
5468 | ||
5469 | /* Handle console input */ | |
5470 | ||
c5aa993b | 5471 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5472 | { |
5473 | quit_count = 0; | |
5474 | echo_check = 0; | |
5475 | status = readtty (); | |
5476 | if (status == READ_MORE) | |
5477 | continue; | |
5478 | ||
5479 | return status; /* telnet session ended */ | |
5480 | } | |
5481 | } | |
5482 | } | |
5483 | ||
5484 | static int | |
c2d11a7d | 5485 | remote_cisco_wait (int pid, struct target_waitstatus *status) |
0f71a2f6 | 5486 | { |
c5aa993b | 5487 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5488 | { |
5489 | error ("Debugging session terminated by protocol error"); | |
5490 | } | |
5491 | putpkt ("?"); | |
5492 | return remote_wait (pid, status); | |
5493 | } | |
5494 | ||
5495 | static void | |
fba45db2 | 5496 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5497 | { |
5498 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5499 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5500 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5501 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5502 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5503 | remote_cisco_ops.to_open = remote_cisco_open; |
5504 | remote_cisco_ops.to_close = remote_cisco_close; | |
5505 | remote_cisco_ops.to_detach = remote_detach; | |
5506 | remote_cisco_ops.to_resume = remote_resume; | |
5507 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5508 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5509 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5510 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5511 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5512 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5513 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5514 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5515 | remote_cisco_ops.to_kill = remote_kill; |
5516 | remote_cisco_ops.to_load = generic_load; | |
5517 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5518 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5519 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5520 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c5aa993b JM |
5521 | remote_cisco_ops.to_stratum = process_stratum; |
5522 | remote_cisco_ops.to_has_all_memory = 1; | |
5523 | remote_cisco_ops.to_has_memory = 1; | |
5524 | remote_cisco_ops.to_has_stack = 1; | |
5525 | remote_cisco_ops.to_has_registers = 1; | |
5526 | remote_cisco_ops.to_has_execution = 1; | |
5527 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5528 | } |
5529 | ||
6426a772 JM |
5530 | static int |
5531 | remote_can_async_p (void) | |
5532 | { | |
5533 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5534 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5535 | } |
5536 | ||
5537 | static int | |
5538 | remote_is_async_p (void) | |
5539 | { | |
5540 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5541 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5542 | } |
5543 | ||
2acceee2 JM |
5544 | /* Pass the SERIAL event on and up to the client. One day this code |
5545 | will be able to delay notifying the client of an event until the | |
5546 | point where an entire packet has been received. */ | |
5547 | ||
5548 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5549 | static void *async_client_context; | |
5550 | static serial_event_ftype remote_async_serial_handler; | |
5551 | ||
6426a772 | 5552 | static void |
2acceee2 | 5553 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5554 | { |
2acceee2 JM |
5555 | /* Don't propogate error information up to the client. Instead let |
5556 | the client find out about the error by querying the target. */ | |
5557 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5558 | } | |
5559 | ||
5560 | static void | |
5561 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5562 | { | |
ed9a39eb | 5563 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5564 | internal_error (__FILE__, __LINE__, |
5565 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5566 | |
2acceee2 JM |
5567 | if (callback != NULL) |
5568 | { | |
5569 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5570 | async_client_callback = callback; | |
5571 | async_client_context = context; | |
5572 | } | |
5573 | else | |
5574 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5575 | } |
5576 | ||
43ff13b4 JM |
5577 | /* Target async and target extended-async. |
5578 | ||
5579 | This are temporary targets, until it is all tested. Eventually | |
5580 | async support will be incorporated int the usual 'remote' | |
5581 | target. */ | |
5582 | ||
5583 | static void | |
c2d11a7d | 5584 | init_remote_async_ops (void) |
43ff13b4 JM |
5585 | { |
5586 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5587 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5588 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5589 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5590 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5591 | remote_async_ops.to_open = remote_async_open; |
5592 | remote_async_ops.to_close = remote_close; | |
5593 | remote_async_ops.to_detach = remote_async_detach; | |
5594 | remote_async_ops.to_resume = remote_async_resume; | |
5595 | remote_async_ops.to_wait = remote_async_wait; | |
5596 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5597 | remote_async_ops.to_store_registers = remote_store_registers; | |
5598 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5599 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5600 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5601 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5602 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5603 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5604 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5605 | remote_async_ops.to_kill = remote_async_kill; |
5606 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5607 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5608 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5609 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5610 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
43ff13b4 JM |
5611 | remote_async_ops.to_stop = remote_stop; |
5612 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5613 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5614 | remote_async_ops.to_stratum = process_stratum; |
5615 | remote_async_ops.to_has_all_memory = 1; | |
5616 | remote_async_ops.to_has_memory = 1; | |
5617 | remote_async_ops.to_has_stack = 1; | |
5618 | remote_async_ops.to_has_registers = 1; | |
5619 | remote_async_ops.to_has_execution = 1; | |
5620 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5621 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5622 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5623 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5624 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5625 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5626 | } |
5627 | ||
5628 | /* Set up the async extended remote vector by making a copy of the standard | |
5629 | remote vector and adding to it. */ | |
5630 | ||
5631 | static void | |
c2d11a7d | 5632 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5633 | { |
5634 | extended_async_remote_ops = remote_async_ops; | |
5635 | ||
5636 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5637 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5638 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5639 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5640 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5641 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5642 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5643 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5644 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5645 | } | |
5646 | ||
5a2468f5 | 5647 | static void |
c2d11a7d | 5648 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5649 | { |
5650 | ||
5651 | } | |
5652 | ||
d471ea57 AC |
5653 | static void |
5654 | show_remote_cmd (char *args, int from_tty) | |
5655 | { | |
44eaed12 | 5656 | |
d471ea57 | 5657 | show_remote_protocol_Z_packet_cmd (args, from_tty); |
44eaed12 C |
5658 | show_remote_protocol_e_packet_cmd (args, from_tty); |
5659 | show_remote_protocol_E_packet_cmd (args, from_tty); | |
d471ea57 AC |
5660 | show_remote_protocol_P_packet_cmd (args, from_tty); |
5661 | show_remote_protocol_binary_download_cmd (args, from_tty); | |
5662 | } | |
5a2468f5 | 5663 | |
0f71a2f6 | 5664 | static void |
fba45db2 | 5665 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5666 | { |
11cf8741 JM |
5667 | build_remote_packet_sizes (); |
5668 | ||
5669 | /* Cisco stuff */ | |
0f71a2f6 | 5670 | tty_input = xmalloc (PBUFSIZ); |
d696208f | 5671 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5672 | } |
5673 | ||
c906108c | 5674 | void |
fba45db2 | 5675 | _initialize_remote (void) |
c906108c | 5676 | { |
5a2468f5 JM |
5677 | static struct cmd_list_element *remote_set_cmdlist; |
5678 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5679 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5680 | |
0f71a2f6 JM |
5681 | /* architecture specific data */ |
5682 | build_remote_gdbarch_data (); | |
5683 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5684 | register_remote_packet_sizes (); |
5685 | register_gdbarch_swap (&remote_address_size, | |
5686 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5687 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5688 | ||
c906108c SS |
5689 | init_remote_ops (); |
5690 | add_target (&remote_ops); | |
5691 | ||
5692 | init_extended_remote_ops (); | |
5693 | add_target (&extended_remote_ops); | |
cce74817 | 5694 | |
43ff13b4 JM |
5695 | init_remote_async_ops (); |
5696 | add_target (&remote_async_ops); | |
5697 | ||
5698 | init_extended_async_remote_ops (); | |
5699 | add_target (&extended_async_remote_ops); | |
5700 | ||
0f71a2f6 JM |
5701 | init_remote_cisco_ops (); |
5702 | add_target (&remote_cisco_ops); | |
5703 | ||
c906108c SS |
5704 | #if 0 |
5705 | init_remote_threadtests (); | |
5706 | #endif | |
5707 | ||
d471ea57 AC |
5708 | /* set/show remote ... */ |
5709 | ||
5a2468f5 JM |
5710 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5711 | Remote protocol specific variables\n\ | |
5712 | Configure various remote-protocol specific variables such as\n\ | |
5713 | the packets being used", | |
cff3e48b | 5714 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5715 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5716 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5717 | Remote protocol specific variables\n\ |
5718 | Configure various remote-protocol specific variables such as\n\ | |
5719 | the packets being used", | |
cff3e48b | 5720 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5721 | 0/*allow-unknown*/, &showlist); |
5722 | ||
c5aa993b | 5723 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5724 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5725 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5726 | &cmdlist); |
5727 | ||
5728 | add_cmd ("packet", class_maintenance, packet_command, | |
5729 | "Send an arbitrary packet to a remote target.\n\ | |
5730 | maintenance packet TEXT\n\ | |
5731 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5732 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5733 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5734 | terminating `#' character and checksum.", | |
5735 | &maintenancelist); | |
5736 | ||
c5aa993b | 5737 | add_show_from_set |
c906108c | 5738 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5739 | var_boolean, (char *) &remote_break, |
c906108c SS |
5740 | "Set whether to send break if interrupted.\n", |
5741 | &setlist), | |
5742 | &showlist); | |
5743 | ||
11cf8741 JM |
5744 | /* Install commands for configuring memory read/write packets. */ |
5745 | ||
5746 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5747 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5748 | &setlist); | |
4ad5b0f7 | 5749 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5750 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5751 | &showlist); | |
5752 | add_cmd ("memory-write-packet-size", no_class, | |
5753 | set_memory_write_packet_size, | |
5754 | "Set the maximum number of bytes per memory-write packet.\n" | |
5755 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5756 | "default packet size. The actual limit is further reduced\n" | |
5757 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5758 | "further restriction and ``limit'' to enable that restriction\n", | |
5759 | &remote_set_cmdlist); | |
5760 | add_cmd ("memory-read-packet-size", no_class, | |
5761 | set_memory_read_packet_size, | |
5762 | "Set the maximum number of bytes per memory-read packet.\n" | |
5763 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5764 | "default packet size. The actual limit is further reduced\n" | |
5765 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5766 | "further restriction and ``limit'' to enable that restriction\n", | |
5767 | &remote_set_cmdlist); | |
5768 | add_cmd ("memory-write-packet-size", no_class, | |
5769 | show_memory_write_packet_size, | |
5770 | "Show the maximum number of bytes per memory-write packet.\n", | |
5771 | &remote_show_cmdlist); | |
5772 | add_cmd ("memory-read-packet-size", no_class, | |
5773 | show_memory_read_packet_size, | |
5774 | "Show the maximum number of bytes per memory-read packet.\n", | |
5775 | &remote_show_cmdlist); | |
c906108c | 5776 | |
c5aa993b | 5777 | add_show_from_set |
c906108c | 5778 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5779 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5780 | "Set the maximum size of the address (in bits) \ |
5781 | in a memory packet.\n", | |
5782 | &setlist), | |
c5aa993b | 5783 | &showlist); |
c906108c | 5784 | |
96baa820 JM |
5785 | add_packet_config_cmd (&remote_protocol_binary_download, |
5786 | "X", "binary-download", | |
5787 | set_remote_protocol_binary_download_cmd, | |
5788 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5789 | &remote_set_cmdlist, &remote_show_cmdlist, |
5790 | 1); | |
96baa820 JM |
5791 | #if 0 |
5792 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5793 | compatibility. */ | |
c5aa993b | 5794 | add_show_from_set |
b83266a0 SS |
5795 | (add_set_cmd ("remotebinarydownload", no_class, |
5796 | var_boolean, (char *) &remote_binary_download, | |
5797 | "Set binary downloads.\n", &setlist), | |
5798 | &showlist); | |
96baa820 | 5799 | #endif |
0f71a2f6 JM |
5800 | |
5801 | add_info ("remote-process", remote_info_process, | |
5802 | "Query the remote system for process info."); | |
5803 | ||
44eaed12 C |
5804 | add_packet_config_cmd (&remote_protocol_e, |
5805 | "e", "step-over-range", | |
5806 | set_remote_protocol_e_packet_cmd, | |
5807 | show_remote_protocol_e_packet_cmd, | |
5808 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5809 | 0); | |
5810 | ||
5811 | add_packet_config_cmd (&remote_protocol_E, | |
5812 | "E", "step-over-range-w-signal", | |
5813 | set_remote_protocol_E_packet_cmd, | |
5814 | show_remote_protocol_E_packet_cmd, | |
5815 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5816 | 0); | |
5817 | ||
d471ea57 AC |
5818 | add_packet_config_cmd (&remote_protocol_P, |
5819 | "P", "set-register", | |
5a2468f5 JM |
5820 | set_remote_protocol_P_packet_cmd, |
5821 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5822 | &remote_set_cmdlist, &remote_show_cmdlist, |
5823 | 1); | |
5824 | ||
5825 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5826 | "Z0", "software-breakpoint", | |
5827 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5828 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5829 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5830 | 0); | |
5831 | ||
5832 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5833 | "Z1", "hardware-breakpoint", | |
5834 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5835 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5836 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5837 | 0); | |
5838 | ||
5839 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5840 | "Z2", "write-watchpoint", | |
5841 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5842 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5843 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5844 | 0); | |
5845 | ||
5846 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5847 | "Z3", "read-watchpoint", | |
5848 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5849 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5850 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5851 | 0); | |
5852 | ||
5853 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5854 | "Z4", "access-watchpoint", | |
5855 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5856 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5857 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5858 | 0); | |
5859 | ||
5860 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
5861 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
5862 | &remote_Z_packet_detect, | |
5863 | "\ | |
5864 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
5865 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
5866 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
5867 | "Show use of remote protocol `Z' packets ", | |
5868 | &remote_show_cmdlist); | |
c906108c | 5869 | } |