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 | ||
6240bebf MS |
53 | #include "gdbcore.h" /* for exec_bfd */ |
54 | ||
c906108c | 55 | /* Prototypes for local functions */ |
6426a772 JM |
56 | static void cleanup_sigint_signal_handler (void *dummy); |
57 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 58 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 59 | |
a14ed312 KB |
60 | static void handle_remote_sigint (int); |
61 | static void handle_remote_sigint_twice (int); | |
62 | static void async_remote_interrupt (gdb_client_data); | |
63 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 64 | |
a14ed312 | 65 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 66 | |
917317f4 | 67 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 68 | |
a14ed312 | 69 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 70 | |
a14ed312 | 71 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 72 | |
a14ed312 KB |
73 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
74 | int len, int should_write, | |
29e57380 | 75 | struct mem_attrib *attrib, |
a14ed312 | 76 | struct target_ops *target); |
c906108c | 77 | |
a14ed312 | 78 | static void remote_prepare_to_store (void); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_fetch_registers (int regno); |
c906108c | 81 | |
39f77062 KB |
82 | static void remote_resume (ptid_t ptid, int step, |
83 | enum target_signal siggnal); | |
84 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 KB |
85 | enum target_signal siggnal); |
86 | static int remote_start_remote (PTR); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void remote_open (char *name, int from_tty); |
89 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
a14ed312 KB |
91 | static void extended_remote_open (char *name, int from_tty); |
92 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 93 | |
a14ed312 KB |
94 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
95 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
96 | int extended_p); | |
c906108c | 97 | |
a14ed312 | 98 | static void remote_close (int quitting); |
c906108c | 99 | |
a14ed312 | 100 | static void remote_store_registers (int regno); |
c906108c | 101 | |
a14ed312 KB |
102 | static void remote_mourn (void); |
103 | static void remote_async_mourn (void); | |
c906108c | 104 | |
a14ed312 | 105 | static void extended_remote_restart (void); |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_mourn (void); |
c906108c | 108 | |
a14ed312 KB |
109 | static void extended_remote_create_inferior (char *, char *, char **); |
110 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
c2d11a7d | 114 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 KB |
118 | static ptid_t remote_wait (ptid_t ptid, |
119 | struct target_waitstatus *status); | |
120 | static ptid_t remote_async_wait (ptid_t ptid, | |
121 | struct target_waitstatus *status); | |
c906108c | 122 | |
a14ed312 KB |
123 | static void remote_kill (void); |
124 | static void remote_async_kill (void); | |
c906108c | 125 | |
a14ed312 | 126 | static int tohex (int nib); |
c906108c | 127 | |
a14ed312 KB |
128 | static void remote_detach (char *args, int from_tty); |
129 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 130 | |
a14ed312 | 131 | static void remote_interrupt (int signo); |
c906108c | 132 | |
a14ed312 | 133 | static void remote_interrupt_twice (int signo); |
7a292a7a | 134 | |
a14ed312 | 135 | static void interrupt_query (void); |
c906108c | 136 | |
a14ed312 | 137 | static void set_thread (int, int); |
c906108c | 138 | |
39f77062 | 139 | static int remote_thread_alive (ptid_t); |
c906108c | 140 | |
a14ed312 | 141 | static void get_offsets (void); |
c906108c | 142 | |
c2d11a7d | 143 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 144 | |
a14ed312 | 145 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 146 | |
a14ed312 | 147 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 148 | |
a14ed312 | 149 | static int hexnumlen (ULONGEST num); |
c906108c | 150 | |
a14ed312 | 151 | static void init_remote_ops (void); |
c906108c | 152 | |
a14ed312 | 153 | static void init_extended_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
156 | |
157 | static struct target_ops remote_cisco_ops; | |
158 | ||
a14ed312 | 159 | static void remote_stop (void); |
c906108c | 160 | |
a14ed312 | 161 | static int ishex (int ch, int *val); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumstr (char *, ULONGEST); |
c906108c | 168 | |
a14ed312 | 169 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 170 | |
a14ed312 | 171 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 172 | |
a14ed312 | 173 | static void print_packet (char *); |
c906108c | 174 | |
a14ed312 | 175 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 176 | |
a14ed312 | 177 | static void compare_sections_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void packet_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 182 | |
39f77062 | 183 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 184 | |
a14ed312 | 185 | static void remote_find_new_threads (void); |
c906108c | 186 | |
a14ed312 | 187 | static void record_currthread (int currthread); |
c906108c | 188 | |
30559e10 | 189 | static int fromhex (int a); |
c906108c | 190 | |
30559e10 | 191 | static int hex2bin (const char *hex, char *bin, int); |
c906108c | 192 | |
234fa6d1 MS |
193 | static int bin2hex (const char *bin, char *hex, int); |
194 | ||
a14ed312 | 195 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 196 | |
a14ed312 | 197 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 198 | |
5a2468f5 | 199 | struct packet_config; |
5a2468f5 | 200 | |
a14ed312 | 201 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 202 | |
d471ea57 | 203 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 204 | |
c906108c SS |
205 | /* Define the target subroutine names */ |
206 | ||
a14ed312 | 207 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 208 | |
a14ed312 | 209 | void _initialize_remote (void); |
c906108c SS |
210 | |
211 | /* */ | |
212 | ||
213 | static struct target_ops remote_ops; | |
214 | ||
215 | static struct target_ops extended_remote_ops; | |
216 | ||
43ff13b4 JM |
217 | /* Temporary target ops. Just like the remote_ops and |
218 | extended_remote_ops, but with asynchronous support. */ | |
219 | static struct target_ops remote_async_ops; | |
220 | ||
221 | static struct target_ops extended_async_remote_ops; | |
222 | ||
6426a772 JM |
223 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
224 | ``forever'' still use the normal timeout mechanism. This is | |
225 | currently used by the ASYNC code to guarentee that target reads | |
226 | during the initial connect always time-out. Once getpkt has been | |
227 | modified to return a timeout indication and, in turn | |
228 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
229 | this can go away. */ | |
230 | static int wait_forever_enabled_p = 1; | |
231 | ||
232 | ||
c906108c SS |
233 | /* This variable chooses whether to send a ^C or a break when the user |
234 | requests program interruption. Although ^C is usually what remote | |
235 | systems expect, and that is the default here, sometimes a break is | |
236 | preferable instead. */ | |
237 | ||
238 | static int remote_break; | |
239 | ||
c906108c SS |
240 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
241 | remote_open knows that we don't have a file open when the program | |
242 | starts. */ | |
243 | static serial_t remote_desc = NULL; | |
244 | ||
0f71a2f6 JM |
245 | /* This is set by the target (thru the 'S' message) |
246 | to denote that the target is in kernel mode. */ | |
247 | static int cisco_kernel_mode = 0; | |
248 | ||
c906108c SS |
249 | /* This variable sets the number of bits in an address that are to be |
250 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
251 | leading zeros, the entire address would be sent. This variable | |
252 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
253 | initial implementation of remote.c restricted the address sent in | |
254 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
255 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
256 | address was never sent. Since fixing this bug may cause a break in | |
257 | some remote targets this variable is principly provided to | |
258 | facilitate backward compatibility. */ | |
259 | ||
260 | static int remote_address_size; | |
261 | ||
6426a772 JM |
262 | /* Tempoary to track who currently owns the terminal. See |
263 | target_async_terminal_* for more details. */ | |
264 | ||
265 | static int remote_async_terminal_ours_p; | |
266 | ||
11cf8741 JM |
267 | \f |
268 | /* This is the size (in chars) of the first response to the ``g'' | |
269 | packet. It is used as a heuristic when determining the maximum | |
270 | size of memory-read and memory-write packets. A target will | |
271 | typically only reserve a buffer large enough to hold the ``g'' | |
272 | packet. The size does not include packet overhead (headers and | |
273 | trailers). */ | |
274 | ||
275 | static long actual_register_packet_size; | |
276 | ||
277 | /* This is the maximum size (in chars) of a non read/write packet. It | |
278 | is also used as a cap on the size of read/write packets. */ | |
279 | ||
280 | static long remote_packet_size; | |
281 | /* compatibility. */ | |
282 | #define PBUFSIZ (remote_packet_size) | |
283 | ||
284 | /* User configurable variables for the number of characters in a | |
285 | memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the | |
286 | default. Some targets need smaller values (fifo overruns, et.al.) | |
287 | and some users need larger values (speed up transfers). The | |
288 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
289 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
290 | negative - a hard limit). */ | |
291 | ||
292 | struct memory_packet_config | |
293 | { | |
294 | char *name; | |
295 | long size; | |
296 | int fixed_p; | |
297 | }; | |
298 | ||
299 | /* Compute the current size of a read/write packet. Since this makes | |
300 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
301 | ||
302 | static long | |
303 | get_memory_packet_size (struct memory_packet_config *config) | |
304 | { | |
305 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk | |
306 | law?) that some hosts don't cope very well with large alloca() | |
307 | calls. Eventually the alloca() code will be replaced by calls to | |
308 | xmalloc() and make_cleanups() allowing this restriction to either | |
309 | be lifted or removed. */ | |
310 | #ifndef MAX_REMOTE_PACKET_SIZE | |
311 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
312 | #endif | |
313 | /* NOTE: 16 is just chosen at random. */ | |
314 | #ifndef MIN_REMOTE_PACKET_SIZE | |
315 | #define MIN_REMOTE_PACKET_SIZE 16 | |
316 | #endif | |
317 | long what_they_get; | |
318 | if (config->fixed_p) | |
319 | { | |
320 | if (config->size <= 0) | |
321 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
322 | else | |
323 | what_they_get = config->size; | |
324 | } | |
325 | else | |
326 | { | |
327 | what_they_get = remote_packet_size; | |
328 | /* Limit the packet to the size specified by the user. */ | |
329 | if (config->size > 0 | |
330 | && what_they_get > config->size) | |
331 | what_they_get = config->size; | |
332 | /* Limit it to the size of the targets ``g'' response. */ | |
333 | if (actual_register_packet_size > 0 | |
334 | && what_they_get > actual_register_packet_size) | |
335 | what_they_get = actual_register_packet_size; | |
336 | } | |
337 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
338 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
339 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
340 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
341 | return what_they_get; | |
342 | } | |
343 | ||
344 | /* Update the size of a read/write packet. If they user wants | |
345 | something really big then do a sanity check. */ | |
346 | ||
347 | static void | |
348 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
349 | { | |
350 | int fixed_p = config->fixed_p; | |
351 | long size = config->size; | |
352 | if (args == NULL) | |
353 | error ("Argument required (integer, `fixed' or `limited')."); | |
354 | else if (strcmp (args, "hard") == 0 | |
355 | || strcmp (args, "fixed") == 0) | |
356 | fixed_p = 1; | |
357 | else if (strcmp (args, "soft") == 0 | |
358 | || strcmp (args, "limit") == 0) | |
359 | fixed_p = 0; | |
360 | else | |
361 | { | |
362 | char *end; | |
363 | size = strtoul (args, &end, 0); | |
364 | if (args == end) | |
365 | error ("Invalid %s (bad syntax).", config->name); | |
366 | #if 0 | |
367 | /* Instead of explicitly capping the size of a packet to | |
368 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
369 | instead allowed to set the size to something arbitrarily | |
370 | large. */ | |
371 | if (size > MAX_REMOTE_PACKET_SIZE) | |
372 | error ("Invalid %s (too large).", config->name); | |
373 | #endif | |
374 | } | |
375 | /* Extra checks? */ | |
376 | if (fixed_p && !config->fixed_p) | |
377 | { | |
378 | if (! query ("The target may not be able to correctly handle a %s\n" | |
379 | "of %ld bytes. Change the packet size? ", | |
380 | config->name, size)) | |
381 | error ("Packet size not changed."); | |
382 | } | |
383 | /* Update the config. */ | |
384 | config->fixed_p = fixed_p; | |
385 | config->size = size; | |
386 | } | |
387 | ||
388 | static void | |
389 | show_memory_packet_size (struct memory_packet_config *config) | |
390 | { | |
391 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
392 | if (config->fixed_p) | |
393 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
394 | get_memory_packet_size (config)); | |
395 | else | |
396 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
397 | get_memory_packet_size (config)); | |
398 | } | |
399 | ||
400 | static struct memory_packet_config memory_write_packet_config = | |
401 | { | |
402 | "memory-write-packet-size", | |
403 | }; | |
404 | ||
405 | static void | |
406 | set_memory_write_packet_size (char *args, int from_tty) | |
407 | { | |
408 | set_memory_packet_size (args, &memory_write_packet_config); | |
409 | } | |
410 | ||
411 | static void | |
412 | show_memory_write_packet_size (char *args, int from_tty) | |
413 | { | |
414 | show_memory_packet_size (&memory_write_packet_config); | |
415 | } | |
416 | ||
417 | static long | |
418 | get_memory_write_packet_size (void) | |
419 | { | |
420 | return get_memory_packet_size (&memory_write_packet_config); | |
421 | } | |
422 | ||
423 | static struct memory_packet_config memory_read_packet_config = | |
424 | { | |
425 | "memory-read-packet-size", | |
426 | }; | |
427 | ||
428 | static void | |
429 | set_memory_read_packet_size (char *args, int from_tty) | |
430 | { | |
431 | set_memory_packet_size (args, &memory_read_packet_config); | |
432 | } | |
433 | ||
434 | static void | |
435 | show_memory_read_packet_size (char *args, int from_tty) | |
436 | { | |
437 | show_memory_packet_size (&memory_read_packet_config); | |
438 | } | |
439 | ||
440 | static long | |
441 | get_memory_read_packet_size (void) | |
442 | { | |
443 | long size = get_memory_packet_size (&memory_read_packet_config); | |
444 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
445 | extra buffer size argument before the memory read size can be | |
446 | increased beyond PBUFSIZ. */ | |
447 | if (size > PBUFSIZ) | |
448 | size = PBUFSIZ; | |
449 | return size; | |
450 | } | |
451 | ||
452 | /* Register packet size initialization. Since the bounds change when | |
453 | the architecture changes (namely REGISTER_BYTES) this all needs to | |
454 | be multi-arched. */ | |
455 | ||
456 | static void | |
457 | register_remote_packet_sizes (void) | |
458 | { | |
459 | REGISTER_GDBARCH_SWAP (remote_packet_size); | |
460 | REGISTER_GDBARCH_SWAP (actual_register_packet_size); | |
461 | } | |
462 | ||
463 | static void | |
464 | build_remote_packet_sizes (void) | |
465 | { | |
c2d11a7d JM |
466 | /* Default maximum number of characters in a packet body. Many |
467 | remote stubs have a hardwired buffer size of 400 bytes | |
468 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
469 | as the maximum packet-size to ensure that the packet and an extra | |
470 | NUL character can always fit in the buffer. This stops GDB | |
471 | trashing stubs that try to squeeze an extra NUL into what is | |
472 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
473 | remote_packet_size = 400 - 1; | |
11cf8741 JM |
474 | /* Should REGISTER_BYTES needs more space than the default, adjust |
475 | the size accordingly. Remember that each byte is encoded as two | |
476 | characters. 32 is the overhead for the packet header / | |
477 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
478 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
479 | little. */ | |
480 | if (REGISTER_BYTES > ((remote_packet_size - 32) / 2)) | |
481 | remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
482 | ||
483 | /* This one is filled in when a ``g'' packet is received. */ | |
484 | actual_register_packet_size = 0; | |
485 | } | |
486 | \f | |
5a2468f5 JM |
487 | /* Generic configuration support for packets the stub optionally |
488 | supports. Allows the user to specify the use of the packet as well | |
489 | as allowing GDB to auto-detect support in the remote stub. */ | |
490 | ||
491 | enum packet_support | |
492 | { | |
493 | PACKET_SUPPORT_UNKNOWN = 0, | |
494 | PACKET_ENABLE, | |
495 | PACKET_DISABLE | |
496 | }; | |
497 | ||
5a2468f5 JM |
498 | struct packet_config |
499 | { | |
5a2468f5 JM |
500 | char *name; |
501 | char *title; | |
8e248173 | 502 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
503 | enum packet_support support; |
504 | }; | |
505 | ||
d471ea57 AC |
506 | /* Analyze a packet's return value and update the packet config |
507 | accordingly. */ | |
508 | ||
509 | enum packet_result | |
510 | { | |
511 | PACKET_ERROR, | |
512 | PACKET_OK, | |
513 | PACKET_UNKNOWN | |
514 | }; | |
515 | ||
5a2468f5 | 516 | static void |
d471ea57 | 517 | update_packet_config (struct packet_config *config) |
5a2468f5 | 518 | { |
d471ea57 AC |
519 | switch (config->detect) |
520 | { | |
521 | case CMD_AUTO_BOOLEAN_TRUE: | |
522 | config->support = PACKET_ENABLE; | |
523 | break; | |
524 | case CMD_AUTO_BOOLEAN_FALSE: | |
525 | config->support = PACKET_DISABLE; | |
526 | break; | |
527 | case CMD_AUTO_BOOLEAN_AUTO: | |
528 | config->support = PACKET_SUPPORT_UNKNOWN; | |
529 | break; | |
530 | } | |
5a2468f5 JM |
531 | } |
532 | ||
533 | static void | |
fba45db2 | 534 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
535 | { |
536 | char *support = "internal-error"; | |
537 | switch (config->support) | |
538 | { | |
539 | case PACKET_ENABLE: | |
540 | support = "enabled"; | |
541 | break; | |
542 | case PACKET_DISABLE: | |
543 | support = "disabled"; | |
544 | break; | |
545 | case PACKET_SUPPORT_UNKNOWN: | |
546 | support = "unknown"; | |
547 | break; | |
548 | } | |
549 | switch (config->detect) | |
550 | { | |
8e248173 | 551 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
552 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
553 | config->name, config->title, support); | |
554 | break; | |
8e248173 AC |
555 | case CMD_AUTO_BOOLEAN_TRUE: |
556 | case CMD_AUTO_BOOLEAN_FALSE: | |
557 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 558 | config->name, config->title, support); |
8e248173 | 559 | break; |
5a2468f5 JM |
560 | } |
561 | } | |
562 | ||
563 | static void | |
d471ea57 AC |
564 | add_packet_config_cmd (struct packet_config *config, |
565 | char *name, | |
566 | char *title, | |
567 | void (*set_func) (char *args, int from_tty, | |
568 | struct cmd_list_element * | |
569 | c), | |
570 | void (*show_func) (char *name, | |
571 | int from_tty), | |
572 | struct cmd_list_element **set_remote_list, | |
573 | struct cmd_list_element **show_remote_list, | |
574 | int legacy) | |
575 | { | |
576 | struct cmd_list_element *set_cmd; | |
577 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
578 | char *set_doc; |
579 | char *show_doc; | |
d471ea57 | 580 | char *cmd_name; |
5a2468f5 JM |
581 | config->name = name; |
582 | config->title = title; | |
8e248173 AC |
583 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
584 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
585 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
586 | name, title); | |
587 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
588 | name, title); | |
d471ea57 | 589 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 590 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
591 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
592 | &config->detect, set_doc, | |
593 | set_remote_list); | |
594 | set_cmd->function.sfunc = set_func; | |
595 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
596 | show_remote_list); | |
597 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
598 | if (legacy) | |
599 | { | |
600 | char *legacy_name; | |
76995688 | 601 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
602 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
603 | set_remote_list); | |
604 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
605 | show_remote_list); | |
606 | } | |
5a2468f5 JM |
607 | } |
608 | ||
d471ea57 AC |
609 | static enum packet_result |
610 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 611 | { |
d471ea57 | 612 | if (buf[0] != '\0') |
5a2468f5 | 613 | { |
d471ea57 AC |
614 | /* The stub recognized the packet request. Check that the |
615 | operation succeeded. */ | |
616 | switch (config->support) | |
617 | { | |
618 | case PACKET_SUPPORT_UNKNOWN: | |
619 | if (remote_debug) | |
620 | fprintf_unfiltered (gdb_stdlog, | |
621 | "Packet %s (%s) is supported\n", | |
622 | config->name, config->title); | |
623 | config->support = PACKET_ENABLE; | |
624 | break; | |
625 | case PACKET_DISABLE: | |
8e65ff28 AC |
626 | internal_error (__FILE__, __LINE__, |
627 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
628 | break; |
629 | case PACKET_ENABLE: | |
630 | break; | |
631 | } | |
632 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
633 | /* "OK" - definitly OK. */ | |
634 | return PACKET_OK; | |
635 | if (buf[0] == 'E' | |
636 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
637 | && buf[3] == '\0') | |
638 | /* "Enn" - definitly an error. */ | |
639 | return PACKET_ERROR; | |
640 | /* The packet may or may not be OK. Just assume it is */ | |
641 | return PACKET_OK; | |
642 | } | |
643 | else | |
644 | { | |
645 | /* The stub does not support the packet. */ | |
646 | switch (config->support) | |
647 | { | |
648 | case PACKET_ENABLE: | |
649 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
650 | /* If the stub previously indicated that the packet was | |
651 | supported then there is a protocol error.. */ | |
652 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
653 | config->name, config->title); | |
654 | else | |
655 | /* The user set it wrong. */ | |
656 | error ("Enabled packet %s (%s) not recognized by stub", | |
657 | config->name, config->title); | |
658 | break; | |
659 | case PACKET_SUPPORT_UNKNOWN: | |
660 | if (remote_debug) | |
661 | fprintf_unfiltered (gdb_stdlog, | |
662 | "Packet %s (%s) is NOT supported\n", | |
663 | config->name, config->title); | |
664 | config->support = PACKET_DISABLE; | |
665 | break; | |
666 | case PACKET_DISABLE: | |
667 | break; | |
668 | } | |
669 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
670 | } |
671 | } | |
672 | ||
44eaed12 C |
673 | /* Should we try the 'e' (step over range) request? */ |
674 | static struct packet_config remote_protocol_e; | |
675 | ||
676 | static void | |
677 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
678 | struct cmd_list_element *c) | |
679 | { | |
680 | update_packet_config (&remote_protocol_e); | |
681 | } | |
682 | ||
683 | static void | |
684 | show_remote_protocol_e_packet_cmd (char *args, int from_tty) | |
685 | { | |
686 | show_packet_config_cmd (&remote_protocol_e); | |
687 | } | |
688 | ||
689 | ||
690 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
691 | static struct packet_config remote_protocol_E; | |
692 | ||
693 | static void | |
694 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
695 | struct cmd_list_element *c) | |
696 | { | |
697 | update_packet_config (&remote_protocol_E); | |
698 | } | |
699 | ||
700 | static void | |
701 | show_remote_protocol_E_packet_cmd (char *args, int from_tty) | |
702 | { | |
703 | show_packet_config_cmd (&remote_protocol_E); | |
704 | } | |
705 | ||
706 | ||
5a2468f5 JM |
707 | /* Should we try the 'P' (set register) request? */ |
708 | ||
709 | static struct packet_config remote_protocol_P; | |
710 | ||
711 | static void | |
fba45db2 KB |
712 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
713 | struct cmd_list_element *c) | |
5a2468f5 | 714 | { |
d471ea57 | 715 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
716 | } |
717 | ||
718 | static void | |
fba45db2 | 719 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
720 | { |
721 | show_packet_config_cmd (&remote_protocol_P); | |
722 | } | |
723 | ||
d471ea57 AC |
724 | /* Should we try one of the 'Z' requests? */ |
725 | ||
726 | enum Z_packet_type | |
727 | { | |
728 | Z_PACKET_SOFTWARE_BP, | |
729 | Z_PACKET_HARDWARE_BP, | |
730 | Z_PACKET_WRITE_WP, | |
731 | Z_PACKET_READ_WP, | |
732 | Z_PACKET_ACCESS_WP, | |
733 | NR_Z_PACKET_TYPES | |
734 | }; | |
96baa820 | 735 | |
d471ea57 AC |
736 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
737 | ||
738 | /* FIXME: Instead of having all these boiler plate functions, the | |
739 | command callback should include a context argument. */ | |
740 | ||
741 | static void | |
742 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
743 | struct cmd_list_element *c) | |
744 | { | |
745 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
746 | } | |
747 | ||
748 | static void | |
749 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
750 | { | |
751 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
752 | } | |
753 | ||
754 | static void | |
755 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
756 | struct cmd_list_element *c) | |
757 | { | |
758 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
759 | } | |
760 | ||
761 | static void | |
762 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
763 | { | |
764 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
765 | } | |
766 | ||
767 | static void | |
768 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
769 | struct cmd_list_element *c) | |
770 | { | |
771 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
772 | } | |
773 | ||
774 | static void | |
775 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
776 | { | |
777 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
778 | } | |
779 | ||
780 | static void | |
781 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
782 | struct cmd_list_element *c) | |
783 | { | |
784 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
785 | } | |
786 | ||
787 | static void | |
788 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
789 | { | |
790 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
791 | } | |
792 | ||
793 | static void | |
794 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
795 | struct cmd_list_element *c) | |
796 | { | |
797 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
798 | } | |
799 | ||
800 | static void | |
801 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
802 | { | |
803 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
804 | } | |
805 | ||
806 | /* For compatibility with older distributions. Provide a ``set remote | |
807 | Z-packet ...'' command that updates all the Z packet types. */ | |
808 | ||
809 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
810 | |
811 | static void | |
fba45db2 KB |
812 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
813 | struct cmd_list_element *c) | |
96baa820 | 814 | { |
d471ea57 AC |
815 | int i; |
816 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
817 | { | |
818 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
819 | update_packet_config (&remote_protocol_Z[i]); | |
820 | } | |
96baa820 JM |
821 | } |
822 | ||
823 | static void | |
fba45db2 | 824 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 825 | { |
d471ea57 AC |
826 | int i; |
827 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
828 | { | |
829 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
830 | } | |
96baa820 JM |
831 | } |
832 | ||
833 | /* Should we try the 'X' (remote binary download) packet? | |
834 | ||
835 | This variable (available to the user via "set remote X-packet") | |
836 | dictates whether downloads are sent in binary (via the 'X' packet). | |
837 | We assume that the stub can, and attempt to do it. This will be | |
838 | cleared if the stub does not understand it. This switch is still | |
839 | needed, though in cases when the packet is supported in the stub, | |
840 | but the connection does not allow it (i.e., 7-bit serial connection | |
841 | only). */ | |
842 | ||
843 | static struct packet_config remote_protocol_binary_download; | |
844 | ||
9d1f7ab2 MS |
845 | /* Should we try the 'ThreadInfo' query packet? |
846 | ||
847 | This variable (NOT available to the user: auto-detect only!) | |
848 | determines whether GDB will use the new, simpler "ThreadInfo" | |
849 | query or the older, more complex syntax for thread queries. | |
850 | This is an auto-detect variable (set to true at each connect, | |
851 | and set to false when the target fails to recognize it). */ | |
852 | ||
853 | static int use_threadinfo_query; | |
854 | static int use_threadextra_query; | |
855 | ||
96baa820 JM |
856 | static void |
857 | set_remote_protocol_binary_download_cmd (char *args, | |
858 | int from_tty, | |
859 | struct cmd_list_element *c) | |
860 | { | |
d471ea57 | 861 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
862 | } |
863 | ||
864 | static void | |
865 | show_remote_protocol_binary_download_cmd (char *args, | |
866 | int from_tty) | |
867 | { | |
868 | show_packet_config_cmd (&remote_protocol_binary_download); | |
869 | } | |
870 | ||
c906108c | 871 | |
43ff13b4 JM |
872 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
873 | PTR sigint_remote_twice_token; | |
874 | PTR sigint_remote_token; | |
875 | ||
c906108c SS |
876 | /* These are pointers to hook functions that may be set in order to |
877 | modify resume/wait behavior for a particular architecture. */ | |
878 | ||
507f3c78 KB |
879 | void (*target_resume_hook) (void); |
880 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
881 | \f |
882 | ||
c5aa993b | 883 | |
c906108c SS |
884 | /* These are the threads which we last sent to the remote system. |
885 | -1 for all or -2 for not sent yet. */ | |
886 | static int general_thread; | |
cce74817 | 887 | static int continue_thread; |
c906108c SS |
888 | |
889 | /* Call this function as a result of | |
890 | 1) A halt indication (T packet) containing a thread id | |
891 | 2) A direct query of currthread | |
892 | 3) Successful execution of set thread | |
893 | */ | |
894 | ||
895 | static void | |
fba45db2 | 896 | record_currthread (int currthread) |
c906108c | 897 | { |
c906108c | 898 | general_thread = currthread; |
cce74817 | 899 | |
c906108c SS |
900 | /* If this is a new thread, add it to GDB's thread list. |
901 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 902 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 903 | { |
39f77062 | 904 | add_thread (pid_to_ptid (currthread)); |
8b93c638 JM |
905 | #ifdef UI_OUT |
906 | ui_out_text (uiout, "[New "); | |
39f77062 | 907 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 JM |
908 | ui_out_text (uiout, "]\n"); |
909 | #else | |
39f77062 KB |
910 | printf_filtered ("[New %s]\n", |
911 | target_pid_to_str (pid_to_ptid (currthread))); | |
8b93c638 | 912 | #endif |
0f71a2f6 | 913 | } |
c906108c SS |
914 | } |
915 | ||
916 | #define MAGIC_NULL_PID 42000 | |
917 | ||
918 | static void | |
fba45db2 | 919 | set_thread (int th, int gen) |
c906108c | 920 | { |
085dd6e6 | 921 | char *buf = alloca (PBUFSIZ); |
cce74817 | 922 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
923 | |
924 | if (state == th) | |
925 | return; | |
926 | ||
927 | buf[0] = 'H'; | |
928 | buf[1] = gen ? 'g' : 'c'; | |
929 | if (th == MAGIC_NULL_PID) | |
930 | { | |
931 | buf[2] = '0'; | |
932 | buf[3] = '\0'; | |
933 | } | |
934 | else if (th < 0) | |
935 | sprintf (&buf[2], "-%x", -th); | |
936 | else | |
937 | sprintf (&buf[2], "%x", th); | |
938 | putpkt (buf); | |
c2d11a7d | 939 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 940 | if (gen) |
c5aa993b | 941 | general_thread = th; |
c906108c | 942 | else |
cce74817 | 943 | continue_thread = th; |
c906108c SS |
944 | } |
945 | \f | |
946 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
947 | ||
948 | static int | |
39f77062 | 949 | remote_thread_alive (ptid_t ptid) |
c906108c | 950 | { |
39f77062 | 951 | int tid = PIDGET (ptid); |
cce74817 | 952 | char buf[16]; |
c906108c | 953 | |
cce74817 JM |
954 | if (tid < 0) |
955 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 956 | else |
cce74817 | 957 | sprintf (buf, "T%08x", tid); |
c906108c | 958 | putpkt (buf); |
c2d11a7d | 959 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
960 | return (buf[0] == 'O' && buf[1] == 'K'); |
961 | } | |
962 | ||
963 | /* About these extended threadlist and threadinfo packets. They are | |
964 | variable length packets but, the fields within them are often fixed | |
965 | length. They are redundent enough to send over UDP as is the | |
966 | remote protocol in general. There is a matching unit test module | |
967 | in libstub. */ | |
968 | ||
cce74817 JM |
969 | #define OPAQUETHREADBYTES 8 |
970 | ||
971 | /* a 64 bit opaque identifier */ | |
972 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
973 | ||
974 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
975 | protocol encoding, and remote.c. it is not particularly changable */ | |
976 | ||
977 | /* Right now, the internal structure is int. We want it to be bigger. | |
978 | Plan to fix this. | |
c5aa993b | 979 | */ |
cce74817 | 980 | |
c5aa993b | 981 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 982 | |
9d1f7ab2 | 983 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
984 | equivalint to the reply of the remote threadinfo packet */ |
985 | ||
986 | struct gdb_ext_thread_info | |
c5aa993b JM |
987 | { |
988 | threadref threadid; /* External form of thread reference */ | |
989 | int active; /* Has state interesting to GDB? , regs, stack */ | |
990 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
991 | char shortname[32]; /* To be used to name threads */ | |
992 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
993 | }; | |
cce74817 JM |
994 | |
995 | /* The volume of remote transfers can be limited by submitting | |
996 | a mask containing bits specifying the desired information. | |
997 | Use a union of these values as the 'selection' parameter to | |
998 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 999 | */ |
cce74817 JM |
1000 | |
1001 | #define TAG_THREADID 1 | |
1002 | #define TAG_EXISTS 2 | |
1003 | #define TAG_DISPLAY 4 | |
1004 | #define TAG_THREADNAME 8 | |
c5aa993b | 1005 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1006 | |
c906108c SS |
1007 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1008 | ||
a14ed312 | 1009 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 1010 | |
a14ed312 | 1011 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1012 | |
a14ed312 | 1013 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1014 | |
a14ed312 | 1015 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1016 | |
a14ed312 | 1017 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1018 | |
a14ed312 | 1019 | static char *pack_int (char *buf, int value); |
cce74817 | 1020 | |
a14ed312 | 1021 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1022 | |
a14ed312 | 1023 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1024 | |
a14ed312 | 1025 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1026 | |
a14ed312 | 1027 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1028 | |
a14ed312 | 1029 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1030 | |
a14ed312 | 1031 | static int threadref_to_int (threadref * ref); |
cce74817 | 1032 | |
a14ed312 | 1033 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1034 | |
a14ed312 | 1035 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1036 | |
a14ed312 | 1037 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1038 | |
a14ed312 KB |
1039 | static int remote_unpack_thread_info_response (char *pkt, |
1040 | threadref * expectedref, | |
1041 | struct gdb_ext_thread_info | |
1042 | *info); | |
cce74817 JM |
1043 | |
1044 | ||
a14ed312 KB |
1045 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1046 | struct gdb_ext_thread_info *info); | |
cce74817 | 1047 | |
a14ed312 KB |
1048 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1049 | int selection, | |
1050 | struct gdb_ext_thread_info *info); | |
cce74817 | 1051 | |
a14ed312 KB |
1052 | static char *pack_threadlist_request (char *pkt, int startflag, |
1053 | int threadcount, | |
1054 | threadref * nextthread); | |
cce74817 | 1055 | |
a14ed312 KB |
1056 | static int parse_threadlist_response (char *pkt, |
1057 | int result_limit, | |
1058 | threadref * original_echo, | |
1059 | threadref * resultlist, int *doneflag); | |
cce74817 | 1060 | |
a14ed312 KB |
1061 | static int remote_get_threadlist (int startflag, |
1062 | threadref * nextthread, | |
1063 | int result_limit, | |
1064 | int *done, | |
1065 | int *result_count, threadref * threadlist); | |
cce74817 | 1066 | |
c5aa993b | 1067 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1068 | |
a14ed312 KB |
1069 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1070 | void *context, int looplimit); | |
cce74817 | 1071 | |
a14ed312 | 1072 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1073 | |
c906108c SS |
1074 | /* encode 64 bits in 16 chars of hex */ |
1075 | ||
1076 | static const char hexchars[] = "0123456789abcdef"; | |
1077 | ||
1078 | static int | |
fba45db2 | 1079 | ishex (int ch, int *val) |
c906108c SS |
1080 | { |
1081 | if ((ch >= 'a') && (ch <= 'f')) | |
1082 | { | |
1083 | *val = ch - 'a' + 10; | |
1084 | return 1; | |
1085 | } | |
1086 | if ((ch >= 'A') && (ch <= 'F')) | |
1087 | { | |
1088 | *val = ch - 'A' + 10; | |
1089 | return 1; | |
1090 | } | |
1091 | if ((ch >= '0') && (ch <= '9')) | |
1092 | { | |
1093 | *val = ch - '0'; | |
1094 | return 1; | |
1095 | } | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | static int | |
fba45db2 | 1100 | stubhex (int ch) |
c906108c SS |
1101 | { |
1102 | if (ch >= 'a' && ch <= 'f') | |
1103 | return ch - 'a' + 10; | |
1104 | if (ch >= '0' && ch <= '9') | |
1105 | return ch - '0'; | |
1106 | if (ch >= 'A' && ch <= 'F') | |
1107 | return ch - 'A' + 10; | |
1108 | return -1; | |
1109 | } | |
1110 | ||
1111 | static int | |
fba45db2 | 1112 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1113 | { |
1114 | int nibble; | |
1115 | int retval = 0; | |
1116 | ||
1117 | while (fieldlength) | |
1118 | { | |
1119 | nibble = stubhex (*buff++); | |
1120 | retval |= nibble; | |
1121 | fieldlength--; | |
1122 | if (fieldlength) | |
1123 | retval = retval << 4; | |
1124 | } | |
1125 | return retval; | |
1126 | } | |
1127 | ||
1128 | char * | |
fba45db2 KB |
1129 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1130 | int *result) | |
c906108c SS |
1131 | { |
1132 | int nibble; | |
1133 | int retval = 0; | |
1134 | ||
1135 | while (ishex (*buff, &nibble)) | |
1136 | { | |
1137 | buff++; | |
1138 | retval = retval << 4; | |
1139 | retval |= nibble & 0x0f; | |
1140 | } | |
1141 | *result = retval; | |
1142 | return buff; | |
1143 | } | |
1144 | ||
1145 | static char * | |
fba45db2 | 1146 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1147 | { |
1148 | ishex (*buf++, val); | |
1149 | return buf; | |
1150 | } | |
1151 | ||
1152 | static char * | |
fba45db2 | 1153 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1154 | { |
1155 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1156 | return buf; | |
1157 | } | |
1158 | ||
1159 | static char * | |
fba45db2 | 1160 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1161 | { |
1162 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1163 | *pkt++ = hexchars[(byte & 0xf)]; | |
1164 | return pkt; | |
1165 | } | |
1166 | ||
1167 | static char * | |
fba45db2 | 1168 | unpack_byte (char *buf, int *value) |
c906108c SS |
1169 | { |
1170 | *value = stub_unpack_int (buf, 2); | |
1171 | return buf + 2; | |
1172 | } | |
1173 | ||
1174 | static char * | |
fba45db2 | 1175 | pack_int (char *buf, int value) |
c906108c SS |
1176 | { |
1177 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1178 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1179 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1180 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1181 | return buf; | |
1182 | } | |
1183 | ||
1184 | static char * | |
fba45db2 | 1185 | unpack_int (char *buf, int *value) |
c906108c SS |
1186 | { |
1187 | *value = stub_unpack_int (buf, 8); | |
1188 | return buf + 8; | |
1189 | } | |
1190 | ||
c5aa993b | 1191 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1192 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1193 | |
1194 | static char * | |
fba45db2 | 1195 | pack_string (char *pkt, char *string) |
c906108c SS |
1196 | { |
1197 | char ch; | |
1198 | int len; | |
1199 | ||
1200 | len = strlen (string); | |
1201 | if (len > 200) | |
1202 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1203 | pkt = pack_hex_byte (pkt, len); | |
1204 | while (len-- > 0) | |
1205 | { | |
1206 | ch = *string++; | |
1207 | if ((ch == '\0') || (ch == '#')) | |
1208 | ch = '*'; /* Protect encapsulation */ | |
1209 | *pkt++ = ch; | |
1210 | } | |
1211 | return pkt; | |
1212 | } | |
1213 | #endif /* 0 (unused) */ | |
1214 | ||
1215 | static char * | |
fba45db2 | 1216 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1217 | { |
1218 | while (length--) | |
1219 | *dest++ = *src++; | |
1220 | *dest = '\0'; | |
1221 | return src; | |
1222 | } | |
1223 | ||
1224 | static char * | |
fba45db2 | 1225 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1226 | { |
1227 | char *limit; | |
1228 | unsigned char *altid; | |
1229 | ||
1230 | altid = (unsigned char *) id; | |
1231 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1232 | while (pkt < limit) | |
1233 | pkt = pack_hex_byte (pkt, *altid++); | |
1234 | return pkt; | |
1235 | } | |
1236 | ||
1237 | ||
1238 | static char * | |
fba45db2 | 1239 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1240 | { |
1241 | char *altref; | |
1242 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1243 | int x, y; | |
1244 | ||
1245 | altref = (char *) id; | |
1246 | ||
1247 | while (inbuf < limit) | |
1248 | { | |
1249 | x = stubhex (*inbuf++); | |
1250 | y = stubhex (*inbuf++); | |
1251 | *altref++ = (x << 4) | y; | |
1252 | } | |
1253 | return inbuf; | |
1254 | } | |
1255 | ||
1256 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1257 | ints. This is due to a mismatch of specifications. We would like | |
1258 | to use 64bit thread references internally. This is an adapter | |
1259 | function. */ | |
1260 | ||
1261 | void | |
fba45db2 | 1262 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1263 | { |
1264 | unsigned char *scan; | |
1265 | ||
1266 | scan = (unsigned char *) id; | |
1267 | { | |
1268 | int i = 4; | |
1269 | while (i--) | |
1270 | *scan++ = 0; | |
1271 | } | |
1272 | *scan++ = (value >> 24) & 0xff; | |
1273 | *scan++ = (value >> 16) & 0xff; | |
1274 | *scan++ = (value >> 8) & 0xff; | |
1275 | *scan++ = (value & 0xff); | |
1276 | } | |
1277 | ||
1278 | static int | |
fba45db2 | 1279 | threadref_to_int (threadref *ref) |
c906108c SS |
1280 | { |
1281 | int i, value = 0; | |
1282 | unsigned char *scan; | |
1283 | ||
1284 | scan = (char *) ref; | |
1285 | scan += 4; | |
1286 | i = 4; | |
1287 | while (i-- > 0) | |
1288 | value = (value << 8) | ((*scan++) & 0xff); | |
1289 | return value; | |
1290 | } | |
1291 | ||
1292 | static void | |
fba45db2 | 1293 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1294 | { |
1295 | int i; | |
1296 | unsigned char *csrc, *cdest; | |
1297 | ||
1298 | csrc = (unsigned char *) src; | |
1299 | cdest = (unsigned char *) dest; | |
1300 | i = 8; | |
1301 | while (i--) | |
1302 | *cdest++ = *csrc++; | |
1303 | } | |
1304 | ||
1305 | static int | |
fba45db2 | 1306 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1307 | { |
1308 | /* things are broken right now, so just assume we got a match */ | |
1309 | #if 0 | |
1310 | unsigned char *srcp, *destp; | |
1311 | int i, result; | |
1312 | srcp = (char *) src; | |
1313 | destp = (char *) dest; | |
1314 | ||
1315 | result = 1; | |
1316 | while (i-- > 0) | |
1317 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1318 | return result; | |
1319 | #endif | |
1320 | return 1; | |
1321 | } | |
1322 | ||
1323 | /* | |
c5aa993b JM |
1324 | threadid:1, # always request threadid |
1325 | context_exists:2, | |
1326 | display:4, | |
1327 | unique_name:8, | |
1328 | more_display:16 | |
1329 | */ | |
c906108c SS |
1330 | |
1331 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1332 | ||
1333 | static char * | |
fba45db2 | 1334 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1335 | { |
1336 | *pkt++ = 'q'; /* Info Query */ | |
1337 | *pkt++ = 'P'; /* process or thread info */ | |
1338 | pkt = pack_int (pkt, mode); /* mode */ | |
1339 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1340 | *pkt = '\0'; /* terminate */ | |
1341 | return pkt; | |
1342 | } | |
1343 | ||
1344 | /* These values tag the fields in a thread info response packet */ | |
1345 | /* Tagging the fields allows us to request specific fields and to | |
1346 | add more fields as time goes by */ | |
1347 | ||
c5aa993b JM |
1348 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1349 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1350 | fetch registers and its stack */ | |
1351 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1352 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1353 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1354 | the process */ | |
c906108c SS |
1355 | |
1356 | static int | |
fba45db2 KB |
1357 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1358 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1359 | { |
1360 | int mask, length; | |
1361 | unsigned int tag; | |
1362 | threadref ref; | |
c5aa993b | 1363 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1364 | int retval = 1; |
1365 | ||
1366 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1367 | info->active = 0; | |
1368 | info->display[0] = '\0'; | |
1369 | info->shortname[0] = '\0'; | |
1370 | info->more_display[0] = '\0'; | |
1371 | ||
1372 | /* Assume the characters indicating the packet type have been stripped */ | |
1373 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1374 | pkt = unpack_threadid (pkt, &ref); | |
1375 | ||
1376 | if (mask == 0) | |
1377 | warning ("Incomplete response to threadinfo request\n"); | |
1378 | if (!threadmatch (&ref, expectedref)) | |
1379 | { /* This is an answer to a different request */ | |
1380 | warning ("ERROR RMT Thread info mismatch\n"); | |
1381 | return 0; | |
1382 | } | |
1383 | copy_threadref (&info->threadid, &ref); | |
1384 | ||
1385 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1386 | ||
c5aa993b | 1387 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1388 | { |
1389 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1390 | pkt = unpack_byte (pkt, &length); /* length */ | |
1391 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1392 | { | |
1393 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1394 | retval = 0; | |
1395 | break; | |
1396 | } | |
1397 | if (tag == TAG_THREADID) | |
1398 | { | |
1399 | if (length != 16) | |
1400 | { | |
1401 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1402 | retval = 0; | |
1403 | break; | |
1404 | } | |
1405 | pkt = unpack_threadid (pkt, &ref); | |
1406 | mask = mask & ~TAG_THREADID; | |
1407 | continue; | |
1408 | } | |
1409 | if (tag == TAG_EXISTS) | |
1410 | { | |
1411 | info->active = stub_unpack_int (pkt, length); | |
1412 | pkt += length; | |
1413 | mask = mask & ~(TAG_EXISTS); | |
1414 | if (length > 8) | |
1415 | { | |
1416 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1417 | retval = 0; | |
1418 | break; | |
1419 | } | |
1420 | continue; | |
1421 | } | |
1422 | if (tag == TAG_THREADNAME) | |
1423 | { | |
1424 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1425 | mask = mask & ~TAG_THREADNAME; | |
1426 | continue; | |
1427 | } | |
1428 | if (tag == TAG_DISPLAY) | |
1429 | { | |
1430 | pkt = unpack_string (pkt, &info->display[0], length); | |
1431 | mask = mask & ~TAG_DISPLAY; | |
1432 | continue; | |
1433 | } | |
1434 | if (tag == TAG_MOREDISPLAY) | |
1435 | { | |
1436 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1437 | mask = mask & ~TAG_MOREDISPLAY; | |
1438 | continue; | |
1439 | } | |
1440 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1441 | break; /* Not a tag we know about */ | |
1442 | } | |
1443 | return retval; | |
1444 | } | |
1445 | ||
1446 | static int | |
fba45db2 KB |
1447 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1448 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1449 | { |
1450 | int result; | |
085dd6e6 | 1451 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1452 | |
1453 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1454 | putpkt (threadinfo_pkt); | |
c2d11a7d | 1455 | getpkt (threadinfo_pkt, PBUFSIZ, 0); |
c906108c SS |
1456 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1457 | info); | |
1458 | return result; | |
1459 | } | |
1460 | ||
1461 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1462 | representation of a threadid. */ | |
1463 | ||
1464 | static int | |
fba45db2 KB |
1465 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1466 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1467 | { |
1468 | threadref lclref; | |
1469 | ||
1470 | int_to_threadref (&lclref, *ref); | |
1471 | return remote_get_threadinfo (&lclref, selection, info); | |
1472 | } | |
1473 | ||
1474 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1475 | ||
1476 | static char * | |
fba45db2 KB |
1477 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1478 | threadref *nextthread) | |
c906108c SS |
1479 | { |
1480 | *pkt++ = 'q'; /* info query packet */ | |
1481 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1482 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1483 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1484 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1485 | *pkt = '\0'; | |
1486 | return pkt; | |
1487 | } | |
1488 | ||
1489 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1490 | ||
1491 | static int | |
fba45db2 KB |
1492 | parse_threadlist_response (char *pkt, int result_limit, |
1493 | threadref *original_echo, threadref *resultlist, | |
1494 | int *doneflag) | |
c906108c SS |
1495 | { |
1496 | char *limit; | |
1497 | int count, resultcount, done; | |
1498 | ||
1499 | resultcount = 0; | |
1500 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1501 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1502 | pkt = unpack_byte (pkt, &count); /* count field */ |
1503 | pkt = unpack_nibble (pkt, &done); | |
1504 | /* The first threadid is the argument threadid. */ | |
1505 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1506 | while ((count-- > 0) && (pkt < limit)) | |
1507 | { | |
1508 | pkt = unpack_threadid (pkt, resultlist++); | |
1509 | if (resultcount++ >= result_limit) | |
1510 | break; | |
1511 | } | |
1512 | if (doneflag) | |
1513 | *doneflag = done; | |
1514 | return resultcount; | |
1515 | } | |
1516 | ||
1517 | static int | |
fba45db2 KB |
1518 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1519 | int *done, int *result_count, threadref *threadlist) | |
c906108c SS |
1520 | { |
1521 | static threadref echo_nextthread; | |
085dd6e6 JM |
1522 | char *threadlist_packet = alloca (PBUFSIZ); |
1523 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1524 | int result = 1; |
1525 | ||
1526 | /* Trancate result limit to be smaller than the packet size */ | |
1527 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1528 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1529 | ||
1530 | pack_threadlist_request (threadlist_packet, | |
1531 | startflag, result_limit, nextthread); | |
1532 | putpkt (threadlist_packet); | |
c2d11a7d | 1533 | getpkt (t_response, PBUFSIZ, 0); |
c906108c SS |
1534 | |
1535 | *result_count = | |
1536 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1537 | threadlist, done); | |
1538 | ||
1539 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1540 | { | |
1541 | /* FIXME: This is a good reason to drop the packet */ | |
1542 | /* Possably, there is a duplicate response */ | |
1543 | /* Possabilities : | |
1544 | retransmit immediatly - race conditions | |
1545 | retransmit after timeout - yes | |
1546 | exit | |
1547 | wait for packet, then exit | |
1548 | */ | |
1549 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1550 | return 0; /* I choose simply exiting */ | |
1551 | } | |
1552 | if (*result_count <= 0) | |
1553 | { | |
1554 | if (*done != 1) | |
1555 | { | |
1556 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1557 | result = 0; | |
1558 | } | |
1559 | return result; /* break; */ | |
1560 | } | |
1561 | if (*result_count > result_limit) | |
1562 | { | |
1563 | *result_count = 0; | |
1564 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1565 | return 0; | |
1566 | } | |
1567 | return result; | |
1568 | } | |
1569 | ||
1570 | /* This is the interface between remote and threads, remotes upper interface */ | |
1571 | ||
1572 | /* remote_find_new_threads retrieves the thread list and for each | |
1573 | thread in the list, looks up the thread in GDB's internal list, | |
1574 | ading the thread if it does not already exist. This involves | |
1575 | getting partial thread lists from the remote target so, polling the | |
1576 | quit_flag is required. */ | |
1577 | ||
1578 | ||
1579 | /* About this many threadisds fit in a packet. */ | |
1580 | ||
1581 | #define MAXTHREADLISTRESULTS 32 | |
1582 | ||
1583 | static int | |
fba45db2 KB |
1584 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1585 | int looplimit) | |
c906108c SS |
1586 | { |
1587 | int done, i, result_count; | |
1588 | int startflag = 1; | |
1589 | int result = 1; | |
1590 | int loopcount = 0; | |
1591 | static threadref nextthread; | |
1592 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1593 | ||
1594 | done = 0; | |
1595 | while (!done) | |
1596 | { | |
1597 | if (loopcount++ > looplimit) | |
1598 | { | |
1599 | result = 0; | |
1600 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1601 | break; | |
1602 | } | |
1603 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1604 | &done, &result_count, resultthreadlist)) | |
1605 | { | |
1606 | result = 0; | |
1607 | break; | |
1608 | } | |
1609 | /* clear for later iterations */ | |
1610 | startflag = 0; | |
1611 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1612 | if (result_count >= 1) | |
1613 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1614 | i = 0; | |
1615 | while (result_count--) | |
1616 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1617 | break; | |
1618 | } | |
1619 | return result; | |
1620 | } | |
1621 | ||
1622 | static int | |
fba45db2 | 1623 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1624 | { |
39f77062 | 1625 | ptid_t ptid; |
c906108c | 1626 | |
39f77062 KB |
1627 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1628 | ||
1629 | if (!in_thread_list (ptid)) | |
1630 | add_thread (ptid); | |
c906108c SS |
1631 | return 1; /* continue iterator */ |
1632 | } | |
1633 | ||
1634 | #define CRAZY_MAX_THREADS 1000 | |
1635 | ||
39f77062 KB |
1636 | static ptid_t |
1637 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1638 | { |
085dd6e6 | 1639 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1640 | |
1641 | putpkt ("qC"); | |
c2d11a7d | 1642 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 1643 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1644 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1645 | else |
1646 | return oldpid; | |
1647 | } | |
1648 | ||
9d1f7ab2 MS |
1649 | /* Find new threads for info threads command. |
1650 | * Original version, using John Metzler's thread protocol. | |
1651 | */ | |
cce74817 JM |
1652 | |
1653 | static void | |
fba45db2 | 1654 | remote_find_new_threads (void) |
c906108c | 1655 | { |
c5aa993b JM |
1656 | remote_threadlist_iterator (remote_newthread_step, 0, |
1657 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1658 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1659 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1660 | } |
1661 | ||
9d1f7ab2 MS |
1662 | /* |
1663 | * Find all threads for info threads command. | |
1664 | * Uses new thread protocol contributed by Cisco. | |
1665 | * Falls back and attempts to use the older method (above) | |
1666 | * if the target doesn't respond to the new method. | |
1667 | */ | |
1668 | ||
0f71a2f6 JM |
1669 | static void |
1670 | remote_threads_info (void) | |
1671 | { | |
085dd6e6 JM |
1672 | char *buf = alloca (PBUFSIZ); |
1673 | char *bufp; | |
0f71a2f6 JM |
1674 | int tid; |
1675 | ||
1676 | if (remote_desc == 0) /* paranoia */ | |
1677 | error ("Command can only be used when connected to the remote target."); | |
1678 | ||
9d1f7ab2 MS |
1679 | if (use_threadinfo_query) |
1680 | { | |
1681 | putpkt ("qfThreadInfo"); | |
1682 | bufp = buf; | |
1683 | getpkt (bufp, PBUFSIZ, 0); | |
1684 | if (bufp[0] != '\0') /* q packet recognized */ | |
1685 | { | |
1686 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1687 | { | |
1688 | do | |
1689 | { | |
1690 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1691 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1692 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1693 | } |
1694 | while (*bufp++ == ','); /* comma-separated list */ | |
1695 | putpkt ("qsThreadInfo"); | |
1696 | bufp = buf; | |
1697 | getpkt (bufp, PBUFSIZ, 0); | |
1698 | } | |
1699 | return; /* done */ | |
1700 | } | |
1701 | } | |
1702 | ||
1703 | /* Else fall back to old method based on jmetzler protocol. */ | |
1704 | use_threadinfo_query = 0; | |
1705 | remote_find_new_threads (); | |
1706 | return; | |
1707 | } | |
1708 | ||
1709 | /* | |
1710 | * Collect a descriptive string about the given thread. | |
1711 | * The target may say anything it wants to about the thread | |
1712 | * (typically info about its blocked / runnable state, name, etc.). | |
1713 | * This string will appear in the info threads display. | |
1714 | * | |
1715 | * Optional: targets are not required to implement this function. | |
1716 | */ | |
1717 | ||
1718 | static char * | |
1719 | remote_threads_extra_info (struct thread_info *tp) | |
1720 | { | |
1721 | int result; | |
1722 | int set; | |
1723 | threadref id; | |
1724 | struct gdb_ext_thread_info threadinfo; | |
1725 | static char display_buf[100]; /* arbitrary... */ | |
1726 | char *bufp = alloca (PBUFSIZ); | |
1727 | int n = 0; /* position in display_buf */ | |
1728 | ||
1729 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1730 | internal_error (__FILE__, __LINE__, |
1731 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1732 | |
1733 | if (use_threadextra_query) | |
1734 | { | |
39f77062 | 1735 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1736 | putpkt (bufp); |
1737 | getpkt (bufp, PBUFSIZ, 0); | |
1738 | if (bufp[0] != 0) | |
1739 | { | |
30559e10 MS |
1740 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1741 | result = hex2bin (bufp, display_buf, n); | |
1742 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1743 | return display_buf; |
1744 | } | |
0f71a2f6 | 1745 | } |
9d1f7ab2 MS |
1746 | |
1747 | /* If the above query fails, fall back to the old method. */ | |
1748 | use_threadextra_query = 0; | |
1749 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1750 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1751 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1752 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1753 | if (threadinfo.active) | |
0f71a2f6 | 1754 | { |
9d1f7ab2 MS |
1755 | if (*threadinfo.shortname) |
1756 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1757 | if (*threadinfo.display) | |
1758 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1759 | if (*threadinfo.more_display) | |
1760 | n += sprintf(&display_buf[n], " Priority: %s", | |
1761 | threadinfo.more_display); | |
1762 | ||
1763 | if (n > 0) | |
c5aa993b | 1764 | { |
9d1f7ab2 MS |
1765 | /* for purely cosmetic reasons, clear up trailing commas */ |
1766 | if (',' == display_buf[n-1]) | |
1767 | display_buf[n-1] = ' '; | |
1768 | return display_buf; | |
c5aa993b | 1769 | } |
0f71a2f6 | 1770 | } |
9d1f7ab2 | 1771 | return NULL; |
0f71a2f6 | 1772 | } |
9d1f7ab2 | 1773 | |
c906108c | 1774 | \f |
c5aa993b | 1775 | |
c906108c SS |
1776 | /* Restart the remote side; this is an extended protocol operation. */ |
1777 | ||
1778 | static void | |
fba45db2 | 1779 | extended_remote_restart (void) |
c906108c | 1780 | { |
085dd6e6 | 1781 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1782 | |
1783 | /* Send the restart command; for reasons I don't understand the | |
1784 | remote side really expects a number after the "R". */ | |
1785 | buf[0] = 'R'; | |
1786 | sprintf (&buf[1], "%x", 0); | |
1787 | putpkt (buf); | |
1788 | ||
1789 | /* Now query for status so this looks just like we restarted | |
1790 | gdbserver from scratch. */ | |
1791 | putpkt ("?"); | |
c2d11a7d | 1792 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1793 | } |
1794 | \f | |
1795 | /* Clean up connection to a remote debugger. */ | |
1796 | ||
1797 | /* ARGSUSED */ | |
1798 | static void | |
fba45db2 | 1799 | remote_close (int quitting) |
c906108c SS |
1800 | { |
1801 | if (remote_desc) | |
1802 | SERIAL_CLOSE (remote_desc); | |
1803 | remote_desc = NULL; | |
1804 | } | |
1805 | ||
1806 | /* Query the remote side for the text, data and bss offsets. */ | |
1807 | ||
1808 | static void | |
fba45db2 | 1809 | get_offsets (void) |
c906108c | 1810 | { |
085dd6e6 JM |
1811 | char *buf = alloca (PBUFSIZ); |
1812 | char *ptr; | |
c906108c SS |
1813 | int lose; |
1814 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1815 | struct section_offsets *offs; | |
1816 | ||
1817 | putpkt ("qOffsets"); | |
1818 | ||
c2d11a7d | 1819 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
1820 | |
1821 | if (buf[0] == '\000') | |
1822 | return; /* Return silently. Stub doesn't support | |
1823 | this command. */ | |
1824 | if (buf[0] == 'E') | |
1825 | { | |
1826 | warning ("Remote failure reply: %s", buf); | |
1827 | return; | |
1828 | } | |
1829 | ||
1830 | /* Pick up each field in turn. This used to be done with scanf, but | |
1831 | scanf will make trouble if CORE_ADDR size doesn't match | |
1832 | conversion directives correctly. The following code will work | |
1833 | with any size of CORE_ADDR. */ | |
1834 | text_addr = data_addr = bss_addr = 0; | |
1835 | ptr = buf; | |
1836 | lose = 0; | |
1837 | ||
1838 | if (strncmp (ptr, "Text=", 5) == 0) | |
1839 | { | |
1840 | ptr += 5; | |
1841 | /* Don't use strtol, could lose on big values. */ | |
1842 | while (*ptr && *ptr != ';') | |
1843 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1844 | } | |
1845 | else | |
1846 | lose = 1; | |
1847 | ||
1848 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1849 | { | |
1850 | ptr += 6; | |
1851 | while (*ptr && *ptr != ';') | |
1852 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1853 | } | |
1854 | else | |
1855 | lose = 1; | |
1856 | ||
1857 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1858 | { | |
1859 | ptr += 5; | |
1860 | while (*ptr && *ptr != ';') | |
1861 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1862 | } | |
1863 | else | |
1864 | lose = 1; | |
1865 | ||
1866 | if (lose) | |
1867 | error ("Malformed response to offset query, %s", buf); | |
1868 | ||
1869 | if (symfile_objfile == NULL) | |
1870 | return; | |
1871 | ||
d4f3574e SS |
1872 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1873 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1874 | |
a4c8257b | 1875 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1876 | |
1877 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1878 | because that's what nlmconv does now. The real solution requires changes | |
1879 | to the stub and remote.c that I don't have time to do right now. */ | |
1880 | ||
a4c8257b EZ |
1881 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1882 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1883 | |
1884 | objfile_relocate (symfile_objfile, offs); | |
1885 | } | |
1886 | ||
0f71a2f6 JM |
1887 | /* |
1888 | * Cisco version of section offsets: | |
1889 | * | |
1890 | * Instead of having GDB query the target for the section offsets, | |
1891 | * Cisco lets the target volunteer the information! It's also in | |
1892 | * a different format, so here are the functions that will decode | |
1893 | * a section offset packet from a Cisco target. | |
1894 | */ | |
1895 | ||
1896 | /* | |
1897 | * Function: remote_cisco_section_offsets | |
1898 | * | |
1899 | * Returns: zero for success, non-zero for failure | |
1900 | */ | |
1901 | ||
c5aa993b | 1902 | static int |
c2d11a7d JM |
1903 | remote_cisco_section_offsets (bfd_vma text_addr, |
1904 | bfd_vma data_addr, | |
1905 | bfd_vma bss_addr, | |
1906 | bfd_signed_vma *text_offs, | |
1907 | bfd_signed_vma *data_offs, | |
1908 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1909 | { |
1910 | bfd_vma text_base, data_base, bss_base; | |
1911 | struct minimal_symbol *start; | |
1912 | asection *sect; | |
c5aa993b | 1913 | bfd *abfd; |
0f71a2f6 | 1914 | int len; |
0f71a2f6 JM |
1915 | |
1916 | if (symfile_objfile == NULL) | |
c5aa993b | 1917 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1918 | |
1919 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1920 | if (start == NULL) | |
c5aa993b | 1921 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1922 | |
1923 | data_base = bss_base = 0; | |
1924 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1925 | ||
1926 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1927 | for (sect = abfd->sections; |
0f71a2f6 JM |
1928 | sect != 0; |
1929 | sect = sect->next) | |
1930 | { | |
ce359b09 | 1931 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1932 | len = strlen (p); |
1933 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1934 | if (data_base == 0 || | |
1935 | data_base > bfd_get_section_vma (abfd, sect)) | |
1936 | data_base = bfd_get_section_vma (abfd, sect); | |
1937 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1938 | if (bss_base == 0 || |
0f71a2f6 JM |
1939 | bss_base > bfd_get_section_vma (abfd, sect)) |
1940 | bss_base = bfd_get_section_vma (abfd, sect); | |
1941 | } | |
1942 | *text_offs = text_addr - text_base; | |
1943 | *data_offs = data_addr - data_base; | |
c5aa993b | 1944 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1945 | if (remote_debug) |
1946 | { | |
1947 | char tmp[128]; | |
1948 | ||
1949 | sprintf (tmp, "VMA: text = 0x"); | |
1950 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1951 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1952 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1953 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1954 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1955 | fprintf_filtered (gdb_stdlog, tmp); | |
1956 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
1957 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
1958 | paddr_nz (*text_offs), | |
1959 | paddr_nz (*data_offs), | |
1960 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
1961 | } |
1962 | ||
1963 | return 0; | |
1964 | } | |
1965 | ||
1966 | /* | |
1967 | * Function: remote_cisco_objfile_relocate | |
1968 | * | |
1969 | * Relocate the symbol file for a remote target. | |
1970 | */ | |
1971 | ||
96baa820 | 1972 | void |
fba45db2 KB |
1973 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
1974 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
1975 | { |
1976 | struct section_offsets *offs; | |
1977 | ||
c5aa993b | 1978 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1979 | { |
1980 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1981 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1982 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 1983 | |
d4f3574e SS |
1984 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1985 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 1986 | |
a4c8257b EZ |
1987 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
1988 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
1989 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
1990 | |
1991 | /* First call the standard objfile_relocate. */ | |
1992 | objfile_relocate (symfile_objfile, offs); | |
1993 | ||
1994 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1995 | the exec target. These entries will control memory transfers |
1996 | from the exec file. */ | |
0f71a2f6 JM |
1997 | |
1998 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1999 | } | |
2000 | } | |
2001 | ||
c906108c SS |
2002 | /* Stub for catch_errors. */ |
2003 | ||
0f71a2f6 | 2004 | static int |
c2d11a7d | 2005 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
2006 | { |
2007 | start_remote (); /* Initialize gdb process mechanisms */ | |
2008 | return 1; | |
2009 | } | |
2010 | ||
c906108c | 2011 | static int |
fba45db2 | 2012 | remote_start_remote (PTR dummy) |
c906108c | 2013 | { |
8edbea78 | 2014 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2015 | |
2016 | /* Ack any packet which the remote side has already sent. */ | |
2017 | SERIAL_WRITE (remote_desc, "+", 1); | |
2018 | ||
2019 | /* Let the stub know that we want it to return the thread. */ | |
2020 | set_thread (-1, 0); | |
2021 | ||
39f77062 | 2022 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2023 | |
2024 | get_offsets (); /* Get text, data & bss offsets */ | |
2025 | ||
2026 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2027 | immediate_quit--; |
c906108c | 2028 | |
0f71a2f6 | 2029 | return remote_start_remote_dummy (dummy); |
c906108c SS |
2030 | } |
2031 | ||
2032 | /* Open a connection to a remote debugger. | |
2033 | NAME is the filename used for communication. */ | |
2034 | ||
2035 | static void | |
fba45db2 | 2036 | remote_open (char *name, int from_tty) |
c906108c SS |
2037 | { |
2038 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2039 | } | |
2040 | ||
43ff13b4 JM |
2041 | /* Just like remote_open, but with asynchronous support. */ |
2042 | static void | |
fba45db2 | 2043 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2044 | { |
2045 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2046 | } | |
2047 | ||
c906108c SS |
2048 | /* Open a connection to a remote debugger using the extended |
2049 | remote gdb protocol. NAME is the filename used for communication. */ | |
2050 | ||
2051 | static void | |
fba45db2 | 2052 | extended_remote_open (char *name, int from_tty) |
c906108c | 2053 | { |
c5aa993b | 2054 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2055 | } |
2056 | ||
43ff13b4 JM |
2057 | /* Just like extended_remote_open, but with asynchronous support. */ |
2058 | static void | |
fba45db2 | 2059 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2060 | { |
c5aa993b | 2061 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2062 | } |
2063 | ||
c906108c SS |
2064 | /* Generic code for opening a connection to a remote target. */ |
2065 | ||
d471ea57 AC |
2066 | static void |
2067 | init_all_packet_configs (void) | |
2068 | { | |
2069 | int i; | |
44eaed12 C |
2070 | update_packet_config (&remote_protocol_e); |
2071 | update_packet_config (&remote_protocol_E); | |
d471ea57 AC |
2072 | update_packet_config (&remote_protocol_P); |
2073 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
2074 | update_packet_config (&remote_protocol_Z[i]); | |
2075 | /* Force remote_write_bytes to check whether target supports binary | |
2076 | downloading. */ | |
2077 | update_packet_config (&remote_protocol_binary_download); | |
2078 | } | |
2079 | ||
c906108c | 2080 | static void |
fba45db2 KB |
2081 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2082 | int extended_p) | |
c906108c SS |
2083 | { |
2084 | if (name == 0) | |
2085 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2086 | serial device is attached to the remote system\n\ |
2087 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2088 | |
6426a772 JM |
2089 | /* See FIXME above */ |
2090 | wait_forever_enabled_p = 1; | |
2091 | ||
c906108c SS |
2092 | target_preopen (from_tty); |
2093 | ||
2094 | unpush_target (target); | |
2095 | ||
c906108c SS |
2096 | remote_desc = SERIAL_OPEN (name); |
2097 | if (!remote_desc) | |
2098 | perror_with_name (name); | |
2099 | ||
2100 | if (baud_rate != -1) | |
2101 | { | |
2102 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2103 | { | |
2104 | SERIAL_CLOSE (remote_desc); | |
2105 | perror_with_name (name); | |
2106 | } | |
2107 | } | |
2108 | ||
c906108c SS |
2109 | SERIAL_RAW (remote_desc); |
2110 | ||
2111 | /* If there is something sitting in the buffer we might take it as a | |
2112 | response to a command, which would be bad. */ | |
2113 | SERIAL_FLUSH_INPUT (remote_desc); | |
2114 | ||
2115 | if (from_tty) | |
2116 | { | |
2117 | puts_filtered ("Remote debugging using "); | |
2118 | puts_filtered (name); | |
2119 | puts_filtered ("\n"); | |
2120 | } | |
c5aa993b | 2121 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2122 | |
d471ea57 | 2123 | init_all_packet_configs (); |
96baa820 | 2124 | |
c5aa993b | 2125 | general_thread = -2; |
cce74817 | 2126 | continue_thread = -2; |
c906108c | 2127 | |
9d1f7ab2 MS |
2128 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2129 | use_threadinfo_query = 1; | |
2130 | use_threadextra_query = 1; | |
2131 | ||
c906108c SS |
2132 | /* Without this, some commands which require an active target (such |
2133 | as kill) won't work. This variable serves (at least) double duty | |
2134 | as both the pid of the target process (if it has such), and as a | |
2135 | flag indicating that a target is active. These functions should | |
2136 | be split out into seperate variables, especially since GDB will | |
2137 | someday have a notion of debugging several processes. */ | |
2138 | ||
39f77062 | 2139 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
f78f6cf1 MS |
2140 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2141 | /* First delete any symbols previously loaded from shared libraries. */ | |
2142 | no_shared_libraries (NULL, 0); | |
2143 | #endif | |
2144 | ||
c906108c SS |
2145 | /* Start the remote connection; if error (0), discard this target. |
2146 | In particular, if the user quits, be sure to discard it | |
2147 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2148 | if (!catch_errors (remote_start_remote, NULL, |
2149 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2150 | RETURN_MASK_ALL)) |
2151 | { | |
2152 | pop_target (); | |
2153 | return; | |
2154 | } | |
2155 | ||
2156 | if (extended_p) | |
2157 | { | |
6240bebf | 2158 | /* Tell the remote that we are using the extended protocol. */ |
085dd6e6 | 2159 | char *buf = alloca (PBUFSIZ); |
c906108c | 2160 | putpkt ("!"); |
c2d11a7d | 2161 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 2162 | } |
f78f6cf1 | 2163 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2164 | /* FIXME: need a master target_open vector from which all |
2165 | remote_opens can be called, so that stuff like this can | |
2166 | go there. Failing that, the following code must be copied | |
2167 | to the open function for any remote target that wants to | |
2168 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2169 | |
2170 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2171 | if (exec_bfd) /* No use without an exec file. */ |
39f77062 | 2172 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); |
6240bebf | 2173 | #endif |
c906108c SS |
2174 | } |
2175 | ||
43ff13b4 JM |
2176 | /* Just like remote_open but with asynchronous support. */ |
2177 | static void | |
fba45db2 KB |
2178 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2179 | int extended_p) | |
43ff13b4 JM |
2180 | { |
2181 | if (name == 0) | |
2182 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2183 | serial device is attached to the remote system\n\ |
2184 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2185 | |
2186 | target_preopen (from_tty); | |
2187 | ||
2188 | unpush_target (target); | |
2189 | ||
43ff13b4 JM |
2190 | remote_desc = SERIAL_OPEN (name); |
2191 | if (!remote_desc) | |
2192 | perror_with_name (name); | |
2193 | ||
2194 | if (baud_rate != -1) | |
2195 | { | |
2196 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
2197 | { | |
2198 | SERIAL_CLOSE (remote_desc); | |
2199 | perror_with_name (name); | |
2200 | } | |
2201 | } | |
2202 | ||
2203 | SERIAL_RAW (remote_desc); | |
2204 | ||
2205 | /* If there is something sitting in the buffer we might take it as a | |
2206 | response to a command, which would be bad. */ | |
2207 | SERIAL_FLUSH_INPUT (remote_desc); | |
2208 | ||
2209 | if (from_tty) | |
2210 | { | |
2211 | puts_filtered ("Remote debugging using "); | |
2212 | puts_filtered (name); | |
2213 | puts_filtered ("\n"); | |
2214 | } | |
2215 | ||
c5aa993b | 2216 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2217 | |
d471ea57 | 2218 | init_all_packet_configs (); |
43ff13b4 | 2219 | |
c5aa993b | 2220 | general_thread = -2; |
43ff13b4 JM |
2221 | continue_thread = -2; |
2222 | ||
9d1f7ab2 MS |
2223 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2224 | use_threadinfo_query = 1; | |
2225 | use_threadextra_query = 1; | |
2226 | ||
43ff13b4 JM |
2227 | /* Without this, some commands which require an active target (such |
2228 | as kill) won't work. This variable serves (at least) double duty | |
2229 | as both the pid of the target process (if it has such), and as a | |
2230 | flag indicating that a target is active. These functions should | |
2231 | be split out into seperate variables, especially since GDB will | |
2232 | someday have a notion of debugging several processes. */ | |
39f77062 | 2233 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
6426a772 JM |
2234 | |
2235 | /* With this target we start out by owning the terminal. */ | |
2236 | remote_async_terminal_ours_p = 1; | |
2237 | ||
2238 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2239 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2240 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2241 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2242 | around this. Eventually a mechanism that allows | |
2243 | wait_for_inferior() to expect/get timeouts will be | |
2244 | implemented. */ | |
2245 | wait_forever_enabled_p = 0; | |
2246 | ||
f78f6cf1 MS |
2247 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2248 | /* First delete any symbols previously loaded from shared libraries. */ | |
2249 | no_shared_libraries (NULL, 0); | |
2250 | #endif | |
2251 | ||
43ff13b4 JM |
2252 | /* Start the remote connection; if error (0), discard this target. |
2253 | In particular, if the user quits, be sure to discard it | |
2254 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2255 | if (!catch_errors (remote_start_remote, NULL, |
2256 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2257 | RETURN_MASK_ALL)) |
2258 | { | |
43ff13b4 | 2259 | pop_target (); |
6426a772 | 2260 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2261 | return; |
2262 | } | |
2263 | ||
6426a772 JM |
2264 | wait_forever_enabled_p = 1; |
2265 | ||
2266 | if (extended_p) | |
43ff13b4 | 2267 | { |
6240bebf | 2268 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 JM |
2269 | char *buf = alloca (PBUFSIZ); |
2270 | putpkt ("!"); | |
c2d11a7d | 2271 | getpkt (buf, PBUFSIZ, 0); |
43ff13b4 | 2272 | } |
f78f6cf1 | 2273 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2274 | /* FIXME: need a master target_open vector from which all |
2275 | remote_opens can be called, so that stuff like this can | |
2276 | go there. Failing that, the following code must be copied | |
2277 | to the open function for any remote target that wants to | |
2278 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2279 | |
2280 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2281 | if (exec_bfd) /* No use without an exec file. */ |
39f77062 | 2282 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); |
6240bebf | 2283 | #endif |
43ff13b4 JM |
2284 | } |
2285 | ||
c906108c SS |
2286 | /* This takes a program previously attached to and detaches it. After |
2287 | this is done, GDB can be used to debug some other program. We | |
2288 | better not have left any breakpoints in the target program or it'll | |
2289 | die when it hits one. */ | |
2290 | ||
2291 | static void | |
fba45db2 | 2292 | remote_detach (char *args, int from_tty) |
c906108c | 2293 | { |
085dd6e6 | 2294 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2295 | |
2296 | if (args) | |
2297 | error ("Argument given to \"detach\" when remotely debugging."); | |
2298 | ||
2299 | /* Tell the remote target to detach. */ | |
2300 | strcpy (buf, "D"); | |
c2d11a7d | 2301 | remote_send (buf, PBUFSIZ); |
c906108c | 2302 | |
cca728d0 | 2303 | target_mourn_inferior (); |
c906108c SS |
2304 | if (from_tty) |
2305 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2306 | |
c906108c SS |
2307 | } |
2308 | ||
43ff13b4 JM |
2309 | /* Same as remote_detach, but with async support. */ |
2310 | static void | |
fba45db2 | 2311 | remote_async_detach (char *args, int from_tty) |
43ff13b4 JM |
2312 | { |
2313 | char *buf = alloca (PBUFSIZ); | |
2314 | ||
2315 | if (args) | |
2316 | error ("Argument given to \"detach\" when remotely debugging."); | |
2317 | ||
2318 | /* Tell the remote target to detach. */ | |
2319 | strcpy (buf, "D"); | |
c2d11a7d | 2320 | remote_send (buf, PBUFSIZ); |
43ff13b4 JM |
2321 | |
2322 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2323 | if (target_is_async_p ()) |
c2c6d25f | 2324 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 | 2325 | |
cca728d0 | 2326 | target_mourn_inferior (); |
43ff13b4 JM |
2327 | if (from_tty) |
2328 | puts_filtered ("Ending remote debugging.\n"); | |
2329 | } | |
2330 | ||
c906108c SS |
2331 | /* Convert hex digit A to a number. */ |
2332 | ||
30559e10 | 2333 | static int |
fba45db2 | 2334 | fromhex (int a) |
c906108c SS |
2335 | { |
2336 | if (a >= '0' && a <= '9') | |
2337 | return a - '0'; | |
2338 | else if (a >= 'a' && a <= 'f') | |
2339 | return a - 'a' + 10; | |
2340 | else if (a >= 'A' && a <= 'F') | |
2341 | return a - 'A' + 10; | |
c5aa993b | 2342 | else |
c906108c SS |
2343 | error ("Reply contains invalid hex digit %d", a); |
2344 | } | |
2345 | ||
30559e10 MS |
2346 | static int |
2347 | hex2bin (const char *hex, char *bin, int count) | |
2348 | { | |
2349 | int i; | |
2350 | ||
30559e10 MS |
2351 | for (i = 0; i < count; i++) |
2352 | { | |
2353 | if (hex[0] == 0 || hex[1] == 0) | |
2354 | { | |
2355 | /* Hex string is short, or of uneven length. | |
2356 | Return the count that has been converted so far. */ | |
2357 | return i; | |
2358 | } | |
2359 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2360 | hex += 2; | |
2361 | } | |
2362 | return i; | |
2363 | } | |
2364 | ||
c906108c SS |
2365 | /* Convert number NIB to a hex digit. */ |
2366 | ||
2367 | static int | |
fba45db2 | 2368 | tohex (int nib) |
c906108c SS |
2369 | { |
2370 | if (nib < 10) | |
c5aa993b | 2371 | return '0' + nib; |
c906108c | 2372 | else |
c5aa993b | 2373 | return 'a' + nib - 10; |
c906108c | 2374 | } |
30559e10 MS |
2375 | |
2376 | static int | |
234fa6d1 | 2377 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2378 | { |
2379 | int i; | |
2380 | /* May use a length, or a nul-terminated string as input. */ | |
2381 | if (count == 0) | |
2382 | count = strlen (bin); | |
2383 | ||
2384 | for (i = 0; i < count; i++) | |
2385 | { | |
2386 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2387 | *hex++ = tohex (*bin++ & 0xf); | |
2388 | } | |
2389 | *hex = 0; | |
2390 | return i; | |
2391 | } | |
c906108c SS |
2392 | \f |
2393 | /* Tell the remote machine to resume. */ | |
2394 | ||
2395 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2396 | ||
2397 | static int last_sent_step; | |
2398 | ||
2399 | static void | |
39f77062 | 2400 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2401 | { |
085dd6e6 | 2402 | char *buf = alloca (PBUFSIZ); |
39f77062 | 2403 | int pid = PIDGET (ptid); |
44eaed12 | 2404 | char *p; |
c906108c SS |
2405 | |
2406 | if (pid == -1) | |
2407 | set_thread (0, 0); /* run any thread */ | |
2408 | else | |
2409 | set_thread (pid, 0); /* run this thread */ | |
2410 | ||
c906108c SS |
2411 | last_sent_signal = siggnal; |
2412 | last_sent_step = step; | |
2413 | ||
2414 | /* A hook for when we need to do something at the last moment before | |
2415 | resumption. */ | |
2416 | if (target_resume_hook) | |
2417 | (*target_resume_hook) (); | |
2418 | ||
44eaed12 C |
2419 | |
2420 | /* The s/S/c/C packets do not return status. So if the target does | |
2421 | not support the S or C packets, the debug agent returns an empty | |
2422 | string which is detected in remote_wait(). This protocol defect | |
2423 | is fixed in the e/E packets. */ | |
2424 | ||
2425 | if (step && step_range_end) | |
2426 | { | |
2427 | /* If the target does not support the 'E' packet, we try the 'S' | |
2428 | packet. Ideally we would fall back to the 'e' packet if that | |
2429 | too is not supported. But that would require another copy of | |
2430 | the code to issue the 'e' packet (and fall back to 's' if not | |
2431 | supported) in remote_wait(). */ | |
2432 | ||
2433 | if (siggnal != TARGET_SIGNAL_0) | |
2434 | { | |
2435 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2436 | { | |
2437 | p = buf; | |
2438 | *p++ = 'E'; | |
2439 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2440 | *p++ = tohex (((int) siggnal) & 0xf); | |
2441 | *p++ = ','; | |
2442 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2443 | *p++ = ','; | |
2444 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2445 | *p++ = 0; | |
2446 | ||
2447 | putpkt (buf); | |
2448 | getpkt (buf, PBUFSIZ, 0); | |
2449 | ||
234fa6d1 | 2450 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2451 | return; |
2452 | } | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2457 | { | |
2458 | p = buf; | |
2459 | *p++ = 'e'; | |
2460 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2461 | *p++ = ','; | |
2462 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2463 | *p++ = 0; | |
2464 | ||
2465 | putpkt (buf); | |
2466 | getpkt (buf, PBUFSIZ, 0); | |
2467 | ||
234fa6d1 | 2468 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2469 | return; |
2470 | } | |
2471 | } | |
2472 | } | |
2473 | ||
c906108c SS |
2474 | if (siggnal != TARGET_SIGNAL_0) |
2475 | { | |
2476 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2477 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2478 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2479 | buf[3] = '\0'; |
2480 | } | |
2481 | else | |
c5aa993b | 2482 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2483 | |
2484 | putpkt (buf); | |
2485 | } | |
43ff13b4 JM |
2486 | |
2487 | /* Same as remote_resume, but with async support. */ | |
2488 | static void | |
39f77062 | 2489 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 JM |
2490 | { |
2491 | char *buf = alloca (PBUFSIZ); | |
39f77062 | 2492 | int pid = PIDGET (ptid); |
44eaed12 | 2493 | char *p; |
43ff13b4 JM |
2494 | |
2495 | if (pid == -1) | |
2496 | set_thread (0, 0); /* run any thread */ | |
2497 | else | |
2498 | set_thread (pid, 0); /* run this thread */ | |
2499 | ||
43ff13b4 JM |
2500 | last_sent_signal = siggnal; |
2501 | last_sent_step = step; | |
2502 | ||
2503 | /* A hook for when we need to do something at the last moment before | |
2504 | resumption. */ | |
2505 | if (target_resume_hook) | |
2506 | (*target_resume_hook) (); | |
2507 | ||
44eaed12 C |
2508 | /* The s/S/c/C packets do not return status. So if the target does |
2509 | not support the S or C packets, the debug agent returns an empty | |
2510 | string which is detected in remote_wait(). This protocol defect | |
2511 | is fixed in the e/E packets. */ | |
2512 | ||
2513 | if (step && step_range_end) | |
2514 | { | |
2515 | /* If the target does not support the 'E' packet, we try the 'S' | |
2516 | packet. Ideally we would fall back to the 'e' packet if that | |
2517 | too is not supported. But that would require another copy of | |
2518 | the code to issue the 'e' packet (and fall back to 's' if not | |
2519 | supported) in remote_wait(). */ | |
2520 | ||
2521 | if (siggnal != TARGET_SIGNAL_0) | |
2522 | { | |
2523 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2524 | { | |
2525 | p = buf; | |
2526 | *p++ = 'E'; | |
2527 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2528 | *p++ = tohex (((int) siggnal) & 0xf); | |
2529 | *p++ = ','; | |
2530 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2531 | *p++ = ','; | |
2532 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2533 | *p++ = 0; | |
2534 | ||
2535 | putpkt (buf); | |
2536 | getpkt (buf, PBUFSIZ, 0); | |
2537 | ||
234fa6d1 | 2538 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2539 | goto register_event_loop; |
2540 | } | |
2541 | } | |
2542 | else | |
2543 | { | |
2544 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2545 | { | |
2546 | p = buf; | |
2547 | *p++ = 'e'; | |
2548 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2549 | *p++ = ','; | |
2550 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2551 | *p++ = 0; | |
2552 | ||
2553 | putpkt (buf); | |
2554 | getpkt (buf, PBUFSIZ, 0); | |
2555 | ||
234fa6d1 | 2556 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2557 | goto register_event_loop; |
2558 | } | |
2559 | } | |
2560 | } | |
2561 | ||
43ff13b4 JM |
2562 | if (siggnal != TARGET_SIGNAL_0) |
2563 | { | |
2564 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2565 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2566 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2567 | buf[3] = '\0'; |
2568 | } | |
2569 | else | |
c5aa993b | 2570 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2571 | |
2572 | putpkt (buf); | |
43ff13b4 | 2573 | |
44eaed12 | 2574 | register_event_loop: |
2acceee2 JM |
2575 | /* We are about to start executing the inferior, let's register it |
2576 | with the event loop. NOTE: this is the one place where all the | |
2577 | execution commands end up. We could alternatively do this in each | |
2578 | of the execution commands in infcmd.c.*/ | |
2579 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2580 | into infcmd.c in order to allow inferior function calls to work | |
2581 | NOT asynchronously. */ | |
ed9a39eb | 2582 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2583 | target_async (inferior_event_handler, 0); |
2584 | /* Tell the world that the target is now executing. */ | |
2585 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2586 | this? Instead, should the client of target just assume (for | |
2587 | async targets) that the target is going to start executing? Is | |
2588 | this information already found in the continuation block? */ | |
ed9a39eb | 2589 | if (target_is_async_p ()) |
2acceee2 | 2590 | target_executing = 1; |
43ff13b4 | 2591 | } |
c906108c | 2592 | \f |
43ff13b4 JM |
2593 | |
2594 | /* Set up the signal handler for SIGINT, while the target is | |
2595 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2596 | static void | |
fba45db2 | 2597 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2598 | { |
c5aa993b | 2599 | sigint_remote_token = |
43ff13b4 JM |
2600 | create_async_signal_handler (async_remote_interrupt, NULL); |
2601 | signal (SIGINT, handle_remote_sigint); | |
2602 | } | |
2603 | ||
2604 | /* Signal handler for SIGINT, while the target is executing. */ | |
2605 | static void | |
fba45db2 | 2606 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2607 | { |
2608 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2609 | sigint_remote_twice_token = |
43ff13b4 JM |
2610 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2611 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2612 | } | |
2613 | ||
2614 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2615 | sent once. It will take effect the second time that the user sends | |
2616 | a ^C. */ | |
2617 | static void | |
fba45db2 | 2618 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2619 | { |
2620 | signal (sig, handle_sigint); | |
c5aa993b | 2621 | sigint_remote_twice_token = |
2df3850c | 2622 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2623 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2624 | } | |
2625 | ||
6426a772 | 2626 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2627 | to a ^C. */ |
c5aa993b | 2628 | static void |
fba45db2 | 2629 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2630 | { |
2631 | if (remote_debug) | |
2632 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2633 | ||
2634 | target_stop (); | |
2635 | } | |
2636 | ||
2637 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2638 | up on the target alltogether. */ | |
2df3850c | 2639 | void |
fba45db2 | 2640 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2641 | { |
2df3850c JM |
2642 | if (remote_debug) |
2643 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2644 | /* Do something only if the target was not killed by the previous |
2645 | cntl-C. */ | |
2646 | if (target_executing) | |
2647 | { | |
2648 | interrupt_query (); | |
2649 | signal (SIGINT, handle_remote_sigint); | |
2650 | } | |
43ff13b4 JM |
2651 | } |
2652 | ||
2653 | /* Reinstall the usual SIGINT handlers, after the target has | |
2654 | stopped. */ | |
6426a772 JM |
2655 | static void |
2656 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2657 | { |
2658 | signal (SIGINT, handle_sigint); | |
2659 | if (sigint_remote_twice_token) | |
c2c6d25f | 2660 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2661 | if (sigint_remote_token) |
c2c6d25f | 2662 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2663 | } |
2664 | ||
c906108c SS |
2665 | /* Send ^C to target to halt it. Target will respond, and send us a |
2666 | packet. */ | |
507f3c78 | 2667 | static void (*ofunc) (int); |
c906108c | 2668 | |
7a292a7a SS |
2669 | /* The command line interface's stop routine. This function is installed |
2670 | as a signal handler for SIGINT. The first time a user requests a | |
2671 | stop, we call remote_stop to send a break or ^C. If there is no | |
2672 | response from the target (it didn't stop when the user requested it), | |
2673 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2674 | static void |
fba45db2 | 2675 | remote_interrupt (int signo) |
c906108c | 2676 | { |
7a292a7a SS |
2677 | /* If this doesn't work, try more severe steps. */ |
2678 | signal (signo, remote_interrupt_twice); | |
2679 | ||
2680 | if (remote_debug) | |
0f71a2f6 | 2681 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2682 | |
2683 | target_stop (); | |
2684 | } | |
2685 | ||
2686 | /* The user typed ^C twice. */ | |
2687 | ||
2688 | static void | |
fba45db2 | 2689 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2690 | { |
2691 | signal (signo, ofunc); | |
2692 | interrupt_query (); | |
c906108c SS |
2693 | signal (signo, remote_interrupt); |
2694 | } | |
7a292a7a SS |
2695 | |
2696 | /* This is the generic stop called via the target vector. When a target | |
2697 | interrupt is requested, either by the command line or the GUI, we | |
2698 | will eventually end up here. */ | |
c906108c | 2699 | static void |
fba45db2 | 2700 | remote_stop (void) |
c906108c | 2701 | { |
7a292a7a SS |
2702 | /* Send a break or a ^C, depending on user preference. */ |
2703 | if (remote_debug) | |
0f71a2f6 | 2704 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2705 | |
7a292a7a SS |
2706 | if (remote_break) |
2707 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2708 | else |
7a292a7a | 2709 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2710 | } |
2711 | ||
2712 | /* Ask the user what to do when an interrupt is received. */ | |
2713 | ||
2714 | static void | |
fba45db2 | 2715 | interrupt_query (void) |
c906108c SS |
2716 | { |
2717 | target_terminal_ours (); | |
2718 | ||
2719 | if (query ("Interrupted while waiting for the program.\n\ | |
2720 | Give up (and stop debugging it)? ")) | |
2721 | { | |
2722 | target_mourn_inferior (); | |
2723 | return_to_top_level (RETURN_QUIT); | |
2724 | } | |
2725 | ||
2726 | target_terminal_inferior (); | |
2727 | } | |
2728 | ||
6426a772 JM |
2729 | /* Enable/disable target terminal ownership. Most targets can use |
2730 | terminal groups to control terminal ownership. Remote targets are | |
2731 | different in that explicit transfer of ownership to/from GDB/target | |
2732 | is required. */ | |
2733 | ||
2734 | static void | |
2735 | remote_async_terminal_inferior (void) | |
2736 | { | |
2737 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2738 | sync_execution here. This function should only be called when | |
2739 | GDB is resuming the inferior in the forground. A background | |
2740 | resume (``run&'') should leave GDB in control of the terminal and | |
2741 | consequently should not call this code. */ | |
2742 | if (!sync_execution) | |
2743 | return; | |
2744 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2745 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2746 | to an asynchronous target with a synchronous command calls this | |
2747 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2748 | stops trying to transfer the terminal to the target when it | |
2749 | shouldn't this guard can go away. */ | |
2750 | if (!remote_async_terminal_ours_p) | |
2751 | return; | |
2752 | delete_file_handler (input_fd); | |
2753 | remote_async_terminal_ours_p = 0; | |
2754 | initialize_sigint_signal_handler (); | |
2755 | /* NOTE: At this point we could also register our selves as the | |
2756 | recipient of all input. Any characters typed could then be | |
2757 | passed on down to the target. */ | |
2758 | } | |
2759 | ||
2760 | static void | |
2761 | remote_async_terminal_ours (void) | |
2762 | { | |
2763 | /* See FIXME in remote_async_terminal_inferior. */ | |
2764 | if (!sync_execution) | |
2765 | return; | |
2766 | /* See FIXME in remote_async_terminal_inferior. */ | |
2767 | if (remote_async_terminal_ours_p) | |
2768 | return; | |
2769 | cleanup_sigint_signal_handler (NULL); | |
2770 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2771 | remote_async_terminal_ours_p = 1; | |
2772 | } | |
2773 | ||
c906108c SS |
2774 | /* If nonzero, ignore the next kill. */ |
2775 | ||
2776 | int kill_kludge; | |
2777 | ||
2778 | void | |
917317f4 | 2779 | remote_console_output (char *msg) |
c906108c SS |
2780 | { |
2781 | char *p; | |
2782 | ||
c5aa993b | 2783 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2784 | { |
2785 | char tb[2]; | |
2786 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2787 | tb[0] = c; | |
2788 | tb[1] = 0; | |
43ff13b4 | 2789 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2790 | } |
917317f4 | 2791 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2792 | } |
2793 | ||
0f71a2f6 JM |
2794 | /* Wait until the remote machine stops, then return, |
2795 | storing status in STATUS just as `wait' would. | |
2796 | Returns "pid", which in the case of a multi-threaded | |
2797 | remote OS, is the thread-id. */ | |
c906108c | 2798 | |
39f77062 KB |
2799 | static ptid_t |
2800 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2801 | { |
085dd6e6 | 2802 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2803 | int thread_num = -1; |
2804 | ||
2805 | status->kind = TARGET_WAITKIND_EXITED; | |
2806 | status->value.integer = 0; | |
2807 | ||
2808 | while (1) | |
2809 | { | |
2810 | unsigned char *p; | |
2811 | ||
c906108c | 2812 | ofunc = signal (SIGINT, remote_interrupt); |
c2d11a7d | 2813 | getpkt (buf, PBUFSIZ, 1); |
c906108c SS |
2814 | signal (SIGINT, ofunc); |
2815 | ||
2816 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2817 | collection of trace data) every time the target stops. */ |
c906108c SS |
2818 | if (target_wait_loop_hook) |
2819 | (*target_wait_loop_hook) (); | |
2820 | ||
2821 | switch (buf[0]) | |
2822 | { | |
2823 | case 'E': /* Error of some sort */ | |
2824 | warning ("Remote failure reply: %s", buf); | |
2825 | continue; | |
2826 | case 'T': /* Status with PC, SP, FP, ... */ | |
2827 | { | |
2828 | int i; | |
2829 | long regno; | |
e6cbd02a | 2830 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2831 | |
2832 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2833 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2834 | ss = signal number |
2835 | n... = register number | |
2836 | r... = register contents | |
2837 | */ | |
c906108c SS |
2838 | p = &buf[3]; /* after Txx */ |
2839 | ||
2840 | while (*p) | |
2841 | { | |
2842 | unsigned char *p1; | |
2843 | char *p_temp; | |
97345198 | 2844 | int fieldsize; |
c906108c SS |
2845 | |
2846 | /* Read the register number */ | |
2847 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2848 | p1 = (unsigned char *) p_temp; |
c906108c | 2849 | |
c5aa993b | 2850 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2851 | { |
2852 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2853 | if (p1 == NULL) | |
2854 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2855 | Packet: '%s'\n", | |
2856 | p, buf); | |
2857 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2858 | { | |
2859 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2860 | record_currthread (thread_num); | |
2861 | p = (unsigned char *) p_temp; | |
2862 | } | |
2863 | } | |
2864 | else | |
2865 | { | |
2866 | p = p1; | |
2867 | ||
2868 | if (*p++ != ':') | |
2869 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2870 | Packet: '%s'\n", | |
2871 | p, buf); | |
2872 | ||
2873 | if (regno >= NUM_REGS) | |
2874 | warning ("Remote sent bad register number %ld: %s\n\ | |
2875 | Packet: '%s'\n", | |
2876 | regno, p, buf); | |
2877 | ||
97345198 MS |
2878 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno)); |
2879 | p += 2 * fieldsize; | |
2880 | if (fieldsize < REGISTER_RAW_SIZE (regno)) | |
30559e10 | 2881 | warning ("Remote reply is too short: %s", buf); |
c906108c SS |
2882 | supply_register (regno, regs); |
2883 | } | |
2884 | ||
2885 | if (*p++ != ';') | |
2886 | { | |
2887 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2888 | warning (" here: %s", p); |
c906108c SS |
2889 | } |
2890 | } | |
2891 | } | |
2892 | /* fall through */ | |
2893 | case 'S': /* Old style status, just signal only */ | |
2894 | status->kind = TARGET_WAITKIND_STOPPED; | |
2895 | status->value.sig = (enum target_signal) | |
2896 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2897 | ||
0f71a2f6 JM |
2898 | if (buf[3] == 'p') |
2899 | { | |
2900 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2901 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2902 | |
2903 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2904 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2905 | value_from_string ("PDEBUG-")); |
2906 | cisco_kernel_mode = 0; | |
2907 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2908 | record_currthread (thread_num); | |
2909 | } | |
2910 | else if (buf[3] == 'k') | |
2911 | { | |
2912 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2913 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2914 | |
2915 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2916 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2917 | value_from_string ("KDEBUG-")); |
2918 | cisco_kernel_mode = 1; | |
2919 | } | |
c906108c | 2920 | goto got_status; |
0f71a2f6 JM |
2921 | case 'N': /* Cisco special: status and offsets */ |
2922 | { | |
2923 | bfd_vma text_addr, data_addr, bss_addr; | |
2924 | bfd_signed_vma text_off, data_off, bss_off; | |
2925 | unsigned char *p1; | |
2926 | ||
2927 | status->kind = TARGET_WAITKIND_STOPPED; | |
2928 | status->value.sig = (enum target_signal) | |
2929 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2930 | ||
c5aa993b | 2931 | if (symfile_objfile == NULL) |
0f71a2f6 | 2932 | { |
d4f3574e | 2933 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
2934 | Packet Dropped"); |
2935 | goto got_status; | |
2936 | } | |
2937 | ||
2938 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2939 | * where AA is the signal number, TT is the new text | |
2940 | * address, DD * is the new data address, and BB is the | |
2941 | * new bss address. */ | |
2942 | ||
2943 | p = &buf[3]; | |
2944 | text_addr = strtoul (p, (char **) &p1, 16); | |
2945 | if (p1 == p || *p1 != ';') | |
2946 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2947 | p = p1 + 1; | |
2948 | data_addr = strtoul (p, (char **) &p1, 16); | |
2949 | if (p1 == p || *p1 != ';') | |
2950 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2951 | p = p1 + 1; | |
2952 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2953 | if (p1 == p) |
0f71a2f6 JM |
2954 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2955 | ||
2956 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2957 | &text_off, &data_off, &bss_off) | |
2958 | == 0) | |
c5aa993b | 2959 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2960 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2961 | ||
2962 | goto got_status; | |
2963 | } | |
c906108c SS |
2964 | case 'W': /* Target exited */ |
2965 | { | |
2966 | /* The remote process exited. */ | |
2967 | status->kind = TARGET_WAITKIND_EXITED; | |
2968 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2969 | goto got_status; | |
2970 | } | |
2971 | case 'X': | |
2972 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2973 | status->value.sig = (enum target_signal) | |
2974 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2975 | kill_kludge = 1; | |
2976 | ||
2977 | goto got_status; | |
2978 | case 'O': /* Console output */ | |
2979 | remote_console_output (buf + 1); | |
2980 | continue; | |
2981 | case '\0': | |
2982 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2983 | { | |
2984 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2985 | the remote system doesn't support it. */ |
c906108c SS |
2986 | target_terminal_ours_for_output (); |
2987 | printf_filtered | |
2988 | ("Can't send signals to this remote system. %s not sent.\n", | |
2989 | target_signal_to_name (last_sent_signal)); | |
2990 | last_sent_signal = TARGET_SIGNAL_0; | |
2991 | target_terminal_inferior (); | |
2992 | ||
2993 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2994 | putpkt ((char *) buf); | |
2995 | continue; | |
2996 | } | |
2997 | /* else fallthrough */ | |
2998 | default: | |
2999 | warning ("Invalid remote reply: %s", buf); | |
3000 | continue; | |
3001 | } | |
3002 | } | |
c5aa993b | 3003 | got_status: |
c906108c SS |
3004 | if (thread_num != -1) |
3005 | { | |
39f77062 | 3006 | return pid_to_ptid (thread_num); |
c906108c | 3007 | } |
39f77062 | 3008 | return inferior_ptid; |
c906108c SS |
3009 | } |
3010 | ||
43ff13b4 | 3011 | /* Async version of remote_wait. */ |
39f77062 KB |
3012 | static ptid_t |
3013 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 JM |
3014 | { |
3015 | unsigned char *buf = alloca (PBUFSIZ); | |
3016 | int thread_num = -1; | |
3017 | ||
3018 | status->kind = TARGET_WAITKIND_EXITED; | |
3019 | status->value.integer = 0; | |
3020 | ||
3021 | while (1) | |
3022 | { | |
3023 | unsigned char *p; | |
c5aa993b | 3024 | |
ed9a39eb | 3025 | if (!target_is_async_p ()) |
43ff13b4 | 3026 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3027 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3028 | _never_ wait for ever -> test on target_is_async_p(). | |
3029 | However, before we do that we need to ensure that the caller | |
3030 | knows how to take the target into/out of async mode. */ | |
c2d11a7d | 3031 | getpkt (buf, PBUFSIZ, wait_forever_enabled_p); |
ed9a39eb | 3032 | if (!target_is_async_p ()) |
43ff13b4 JM |
3033 | signal (SIGINT, ofunc); |
3034 | ||
3035 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3036 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3037 | if (target_wait_loop_hook) |
3038 | (*target_wait_loop_hook) (); | |
3039 | ||
3040 | switch (buf[0]) | |
3041 | { | |
3042 | case 'E': /* Error of some sort */ | |
3043 | warning ("Remote failure reply: %s", buf); | |
3044 | continue; | |
3045 | case 'T': /* Status with PC, SP, FP, ... */ | |
3046 | { | |
3047 | int i; | |
3048 | long regno; | |
e6cbd02a | 3049 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
3050 | |
3051 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3052 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3053 | ss = signal number |
3054 | n... = register number | |
3055 | r... = register contents | |
3056 | */ | |
43ff13b4 JM |
3057 | p = &buf[3]; /* after Txx */ |
3058 | ||
3059 | while (*p) | |
3060 | { | |
3061 | unsigned char *p1; | |
3062 | char *p_temp; | |
6c3f2dbf | 3063 | int fieldsize; |
43ff13b4 JM |
3064 | |
3065 | /* Read the register number */ | |
3066 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 3067 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 3068 | |
c5aa993b | 3069 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
3070 | { |
3071 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3072 | if (p1 == NULL) | |
3073 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3074 | Packet: '%s'\n", | |
3075 | p, buf); | |
3076 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3077 | { | |
3078 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3079 | record_currthread (thread_num); | |
3080 | p = (unsigned char *) p_temp; | |
3081 | } | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | p = p1; | |
3086 | ||
3087 | if (*p++ != ':') | |
3088 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3089 | Packet: '%s'\n", | |
3090 | p, buf); | |
3091 | ||
3092 | if (regno >= NUM_REGS) | |
3093 | warning ("Remote sent bad register number %ld: %s\n\ | |
3094 | Packet: '%s'\n", | |
3095 | regno, p, buf); | |
3096 | ||
6c3f2dbf MS |
3097 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno)); |
3098 | p += 2 * fieldsize; | |
3099 | if (fieldsize < REGISTER_RAW_SIZE (regno)) | |
30559e10 | 3100 | warning ("Remote reply is too short: %s", buf); |
43ff13b4 JM |
3101 | supply_register (regno, regs); |
3102 | } | |
3103 | ||
3104 | if (*p++ != ';') | |
3105 | { | |
3106 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3107 | warning (" here: %s", p); |
43ff13b4 JM |
3108 | } |
3109 | } | |
3110 | } | |
3111 | /* fall through */ | |
3112 | case 'S': /* Old style status, just signal only */ | |
3113 | status->kind = TARGET_WAITKIND_STOPPED; | |
3114 | status->value.sig = (enum target_signal) | |
3115 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3116 | ||
3117 | if (buf[3] == 'p') | |
3118 | { | |
3119 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3120 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3121 | |
3122 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3123 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3124 | value_from_string ("PDEBUG-")); |
3125 | cisco_kernel_mode = 0; | |
3126 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3127 | record_currthread (thread_num); | |
3128 | } | |
3129 | else if (buf[3] == 'k') | |
3130 | { | |
3131 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3132 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3133 | |
3134 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3135 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3136 | value_from_string ("KDEBUG-")); |
3137 | cisco_kernel_mode = 1; | |
3138 | } | |
3139 | goto got_status; | |
3140 | case 'N': /* Cisco special: status and offsets */ | |
3141 | { | |
3142 | bfd_vma text_addr, data_addr, bss_addr; | |
3143 | bfd_signed_vma text_off, data_off, bss_off; | |
3144 | unsigned char *p1; | |
3145 | ||
3146 | status->kind = TARGET_WAITKIND_STOPPED; | |
3147 | status->value.sig = (enum target_signal) | |
3148 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3149 | ||
c5aa993b | 3150 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3151 | { |
3152 | warning ("Relocation packet recieved with no symbol file. \ | |
3153 | Packet Dropped"); | |
3154 | goto got_status; | |
3155 | } | |
3156 | ||
3157 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3158 | * where AA is the signal number, TT is the new text | |
3159 | * address, DD * is the new data address, and BB is the | |
3160 | * new bss address. */ | |
3161 | ||
3162 | p = &buf[3]; | |
3163 | text_addr = strtoul (p, (char **) &p1, 16); | |
3164 | if (p1 == p || *p1 != ';') | |
3165 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3166 | p = p1 + 1; | |
3167 | data_addr = strtoul (p, (char **) &p1, 16); | |
3168 | if (p1 == p || *p1 != ';') | |
3169 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3170 | p = p1 + 1; | |
3171 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3172 | if (p1 == p) |
43ff13b4 JM |
3173 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3174 | ||
3175 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3176 | &text_off, &data_off, &bss_off) | |
3177 | == 0) | |
c5aa993b | 3178 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3179 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3180 | ||
3181 | goto got_status; | |
3182 | } | |
3183 | case 'W': /* Target exited */ | |
3184 | { | |
3185 | /* The remote process exited. */ | |
3186 | status->kind = TARGET_WAITKIND_EXITED; | |
3187 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3188 | goto got_status; | |
3189 | } | |
3190 | case 'X': | |
3191 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3192 | status->value.sig = (enum target_signal) | |
3193 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3194 | kill_kludge = 1; | |
3195 | ||
3196 | goto got_status; | |
3197 | case 'O': /* Console output */ | |
3198 | remote_console_output (buf + 1); | |
c4093a6a JM |
3199 | /* Return immediately to the event loop. The event loop will |
3200 | still be waiting on the inferior afterwards. */ | |
3201 | status->kind = TARGET_WAITKIND_IGNORE; | |
3202 | goto got_status; | |
43ff13b4 JM |
3203 | case '\0': |
3204 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3205 | { | |
3206 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3207 | the remote system doesn't support it. */ |
43ff13b4 JM |
3208 | target_terminal_ours_for_output (); |
3209 | printf_filtered | |
3210 | ("Can't send signals to this remote system. %s not sent.\n", | |
3211 | target_signal_to_name (last_sent_signal)); | |
3212 | last_sent_signal = TARGET_SIGNAL_0; | |
3213 | target_terminal_inferior (); | |
3214 | ||
3215 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3216 | putpkt ((char *) buf); | |
3217 | continue; | |
3218 | } | |
3219 | /* else fallthrough */ | |
3220 | default: | |
3221 | warning ("Invalid remote reply: %s", buf); | |
3222 | continue; | |
3223 | } | |
3224 | } | |
c5aa993b | 3225 | got_status: |
43ff13b4 JM |
3226 | if (thread_num != -1) |
3227 | { | |
39f77062 | 3228 | return pid_to_ptid (thread_num); |
43ff13b4 | 3229 | } |
39f77062 | 3230 | return inferior_ptid; |
43ff13b4 JM |
3231 | } |
3232 | ||
c906108c SS |
3233 | /* Number of bytes of registers this stub implements. */ |
3234 | ||
3235 | static int register_bytes_found; | |
3236 | ||
3237 | /* Read the remote registers into the block REGS. */ | |
3238 | /* Currently we just read all the registers, so we don't use regno. */ | |
3239 | ||
3240 | /* ARGSUSED */ | |
3241 | static void | |
fba45db2 | 3242 | remote_fetch_registers (int regno) |
c906108c | 3243 | { |
085dd6e6 | 3244 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3245 | int i; |
3246 | char *p; | |
7302a204 | 3247 | char *regs = alloca (REGISTER_BYTES); |
c906108c | 3248 | |
39f77062 | 3249 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c SS |
3250 | |
3251 | sprintf (buf, "g"); | |
c2d11a7d | 3252 | remote_send (buf, PBUFSIZ); |
c906108c | 3253 | |
11cf8741 JM |
3254 | /* Save the size of the packet sent to us by the target. Its used |
3255 | as a heuristic when determining the max size of packets that the | |
3256 | target can safely receive. */ | |
3257 | if (actual_register_packet_size == 0) | |
3258 | actual_register_packet_size = strlen (buf); | |
c906108c SS |
3259 | |
3260 | /* Unimplemented registers read as all bits zero. */ | |
3261 | memset (regs, 0, REGISTER_BYTES); | |
3262 | ||
3263 | /* We can get out of synch in various cases. If the first character | |
3264 | in the buffer is not a hex character, assume that has happened | |
3265 | and try to fetch another packet to read. */ | |
3266 | while ((buf[0] < '0' || buf[0] > '9') | |
3267 | && (buf[0] < 'a' || buf[0] > 'f') | |
3268 | && buf[0] != 'x') /* New: unavailable register value */ | |
3269 | { | |
3270 | if (remote_debug) | |
0f71a2f6 JM |
3271 | fprintf_unfiltered (gdb_stdlog, |
3272 | "Bad register packet; fetching a new packet\n"); | |
c2d11a7d | 3273 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3274 | } |
3275 | ||
3276 | /* Reply describes registers byte by byte, each byte encoded as two | |
3277 | hex characters. Suck them all up, then supply them to the | |
3278 | register cacheing/storage mechanism. */ | |
3279 | ||
3280 | p = buf; | |
3281 | for (i = 0; i < REGISTER_BYTES; i++) | |
3282 | { | |
3283 | if (p[0] == 0) | |
3284 | break; | |
3285 | if (p[1] == 0) | |
3286 | { | |
3287 | warning ("Remote reply is of odd length: %s", buf); | |
3288 | /* Don't change register_bytes_found in this case, and don't | |
3289 | print a second warning. */ | |
3290 | goto supply_them; | |
3291 | } | |
3292 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3293 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3294 | else |
3295 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3296 | p += 2; | |
3297 | } | |
3298 | ||
3299 | if (i != register_bytes_found) | |
3300 | { | |
3301 | register_bytes_found = i; | |
2649061d AC |
3302 | if (REGISTER_BYTES_OK_P () |
3303 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3304 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3305 | } |
c5aa993b JM |
3306 | |
3307 | supply_them: | |
c906108c | 3308 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3309 | { |
3310 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3311 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
7302a204 | 3312 | set_register_cached (i, -1); |
c5aa993b | 3313 | } |
c906108c SS |
3314 | } |
3315 | ||
3316 | /* Prepare to store registers. Since we may send them all (using a | |
3317 | 'G' request), we have to read out the ones we don't want to change | |
3318 | first. */ | |
3319 | ||
c5aa993b | 3320 | static void |
fba45db2 | 3321 | remote_prepare_to_store (void) |
c906108c SS |
3322 | { |
3323 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3324 | switch (remote_protocol_P.support) |
3325 | { | |
3326 | case PACKET_DISABLE: | |
3327 | case PACKET_SUPPORT_UNKNOWN: | |
3328 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3329 | break; | |
3330 | case PACKET_ENABLE: | |
3331 | break; | |
3332 | } | |
3333 | } | |
3334 | ||
3335 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3336 | packet was not recognized. */ | |
3337 | ||
3338 | static int | |
c2d11a7d | 3339 | store_register_using_P (int regno) |
5a2468f5 JM |
3340 | { |
3341 | /* Try storing a single register. */ | |
3342 | char *buf = alloca (PBUFSIZ); | |
3343 | char *regp; | |
3344 | char *p; | |
3345 | int i; | |
3346 | ||
3347 | sprintf (buf, "P%x=", regno); | |
3348 | p = buf + strlen (buf); | |
7302a204 | 3349 | regp = register_buffer (regno); |
30559e10 | 3350 | bin2hex (regp, p, REGISTER_RAW_SIZE (regno)); |
c2d11a7d | 3351 | remote_send (buf, PBUFSIZ); |
5a2468f5 JM |
3352 | |
3353 | return buf[0] != '\0'; | |
c906108c SS |
3354 | } |
3355 | ||
5a2468f5 | 3356 | |
c906108c | 3357 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
7302a204 | 3358 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3359 | |
3360 | static void | |
fba45db2 | 3361 | remote_store_registers (int regno) |
c906108c | 3362 | { |
085dd6e6 | 3363 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3364 | int i; |
3365 | char *p; | |
7302a204 | 3366 | char *regs; |
c906108c | 3367 | |
39f77062 | 3368 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3369 | |
5a2468f5 | 3370 | if (regno >= 0) |
c906108c | 3371 | { |
5a2468f5 | 3372 | switch (remote_protocol_P.support) |
c906108c | 3373 | { |
5a2468f5 JM |
3374 | case PACKET_DISABLE: |
3375 | break; | |
3376 | case PACKET_ENABLE: | |
3377 | if (store_register_using_P (regno)) | |
3378 | return; | |
3379 | else | |
3380 | error ("Protocol error: P packet not recognized by stub"); | |
3381 | case PACKET_SUPPORT_UNKNOWN: | |
3382 | if (store_register_using_P (regno)) | |
3383 | { | |
3384 | /* The stub recognized the 'P' packet. Remember this. */ | |
3385 | remote_protocol_P.support = PACKET_ENABLE; | |
3386 | return; | |
3387 | } | |
3388 | else | |
3389 | { | |
3390 | /* The stub does not support the 'P' packet. Use 'G' | |
3391 | instead, and don't try using 'P' in the future (it | |
3392 | will just waste our time). */ | |
3393 | remote_protocol_P.support = PACKET_DISABLE; | |
3394 | break; | |
3395 | } | |
c906108c | 3396 | } |
c906108c SS |
3397 | } |
3398 | ||
3399 | buf[0] = 'G'; | |
3400 | ||
3401 | /* Command describes registers byte by byte, | |
3402 | each byte encoded as two hex characters. */ | |
3403 | ||
7302a204 | 3404 | regs = register_buffer (-1); |
c906108c SS |
3405 | p = buf + 1; |
3406 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
30559e10 | 3407 | bin2hex (regs, p, register_bytes_found); |
c2d11a7d | 3408 | remote_send (buf, PBUFSIZ); |
c906108c | 3409 | } |
c906108c SS |
3410 | \f |
3411 | ||
3412 | /* Return the number of hex digits in num. */ | |
3413 | ||
3414 | static int | |
fba45db2 | 3415 | hexnumlen (ULONGEST num) |
c906108c SS |
3416 | { |
3417 | int i; | |
3418 | ||
3419 | for (i = 0; num != 0; i++) | |
3420 | num >>= 4; | |
3421 | ||
3422 | return max (i, 1); | |
3423 | } | |
3424 | ||
2df3850c | 3425 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3426 | |
3427 | static int | |
fba45db2 | 3428 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3429 | { |
c906108c | 3430 | int len = hexnumlen (num); |
2df3850c JM |
3431 | return hexnumnstr (buf, num, len); |
3432 | } | |
3433 | ||
c906108c | 3434 | |
2df3850c | 3435 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3436 | |
2df3850c | 3437 | static int |
fba45db2 | 3438 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3439 | { |
3440 | int i; | |
3441 | ||
3442 | buf[width] = '\0'; | |
3443 | ||
3444 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3445 | { |
c5aa993b | 3446 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3447 | num >>= 4; |
3448 | } | |
3449 | ||
2df3850c | 3450 | return width; |
c906108c SS |
3451 | } |
3452 | ||
3453 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3454 | ||
3455 | static CORE_ADDR | |
fba45db2 | 3456 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3457 | { |
3458 | if (remote_address_size > 0 | |
3459 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3460 | { | |
3461 | /* Only create a mask when that mask can safely be constructed | |
3462 | in a ULONGEST variable. */ | |
3463 | ULONGEST mask = 1; | |
3464 | mask = (mask << remote_address_size) - 1; | |
3465 | addr &= mask; | |
3466 | } | |
3467 | return addr; | |
3468 | } | |
3469 | ||
3470 | /* Determine whether the remote target supports binary downloading. | |
3471 | This is accomplished by sending a no-op memory write of zero length | |
3472 | to the target at the specified address. It does not suffice to send | |
3473 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3474 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3475 | ||
96baa820 JM |
3476 | NOTE: This can still lose if the serial line is not eight-bit |
3477 | clean. In cases like this, the user should clear "remote | |
3478 | X-packet". */ | |
3479 | ||
c906108c | 3480 | static void |
fba45db2 | 3481 | check_binary_download (CORE_ADDR addr) |
c906108c | 3482 | { |
96baa820 | 3483 | switch (remote_protocol_binary_download.support) |
c906108c | 3484 | { |
96baa820 JM |
3485 | case PACKET_DISABLE: |
3486 | break; | |
3487 | case PACKET_ENABLE: | |
3488 | break; | |
3489 | case PACKET_SUPPORT_UNKNOWN: | |
3490 | { | |
3491 | char *buf = alloca (PBUFSIZ); | |
3492 | char *p; | |
3493 | ||
3494 | p = buf; | |
3495 | *p++ = 'X'; | |
3496 | p += hexnumstr (p, (ULONGEST) addr); | |
3497 | *p++ = ','; | |
3498 | p += hexnumstr (p, (ULONGEST) 0); | |
3499 | *p++ = ':'; | |
3500 | *p = '\0'; | |
3501 | ||
3502 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3503 | getpkt (buf, PBUFSIZ, 0); |
c906108c | 3504 | |
96baa820 JM |
3505 | if (buf[0] == '\0') |
3506 | { | |
3507 | if (remote_debug) | |
3508 | fprintf_unfiltered (gdb_stdlog, | |
3509 | "binary downloading NOT suppported by target\n"); | |
3510 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3511 | } | |
3512 | else | |
3513 | { | |
3514 | if (remote_debug) | |
3515 | fprintf_unfiltered (gdb_stdlog, | |
3516 | "binary downloading suppported by target\n"); | |
3517 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3518 | } | |
3519 | break; | |
3520 | } | |
c906108c SS |
3521 | } |
3522 | } | |
3523 | ||
3524 | /* Write memory data directly to the remote machine. | |
3525 | This does not inform the data cache; the data cache uses this. | |
3526 | MEMADDR is the address in the remote memory space. | |
3527 | MYADDR is the address of the buffer in our space. | |
3528 | LEN is the number of bytes. | |
3529 | ||
917317f4 JM |
3530 | Returns number of bytes transferred, or 0 (setting errno) for |
3531 | error. Only transfer a single packet. */ | |
c906108c SS |
3532 | |
3533 | static int | |
917317f4 | 3534 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3535 | { |
917317f4 | 3536 | unsigned char *buf; |
c906108c | 3537 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3538 | unsigned char *p; |
3539 | unsigned char *plen; | |
c2d11a7d | 3540 | long sizeof_buf; |
917317f4 JM |
3541 | int plenlen; |
3542 | int todo; | |
3543 | int nr_bytes; | |
c906108c SS |
3544 | |
3545 | /* Verify that the target can support a binary download */ | |
3546 | check_binary_download (memaddr); | |
3547 | ||
917317f4 | 3548 | /* Determine the max packet size. */ |
11cf8741 | 3549 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3550 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3551 | buf = alloca (sizeof_buf); | |
c906108c | 3552 | |
7a292a7a | 3553 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3554 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3555 | ||
917317f4 JM |
3556 | /* construct "M"<memaddr>","<len>":" */ |
3557 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3558 | p = buf; | |
3559 | ||
3560 | /* Append [XM]. Compute a best guess of the number of bytes | |
3561 | actually transfered. */ | |
3562 | switch (remote_protocol_binary_download.support) | |
c906108c | 3563 | { |
917317f4 JM |
3564 | case PACKET_ENABLE: |
3565 | *p++ = 'X'; | |
3566 | /* Best guess at number of bytes that will fit. */ | |
3567 | todo = min (len, max_buf_size); | |
3568 | break; | |
3569 | case PACKET_DISABLE: | |
3570 | *p++ = 'M'; | |
3571 | /* num bytes that will fit */ | |
3572 | todo = min (len, max_buf_size / 2); | |
3573 | break; | |
3574 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3575 | internal_error (__FILE__, __LINE__, |
3576 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3577 | default: |
8e65ff28 | 3578 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3579 | } |
3580 | ||
3581 | /* Append <memaddr> */ | |
3582 | memaddr = remote_address_masked (memaddr); | |
3583 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3584 | *p++ = ','; | |
3585 | ||
3586 | /* Append <len>. Retain the location/size of <len>. It may | |
3587 | need to be adjusted once the packet body has been created. */ | |
3588 | plen = p; | |
3589 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3590 | p += plenlen; | |
3591 | *p++ = ':'; | |
3592 | *p = '\0'; | |
3593 | ||
3594 | /* Append the packet body. */ | |
3595 | switch (remote_protocol_binary_download.support) | |
3596 | { | |
3597 | case PACKET_ENABLE: | |
3598 | /* Binary mode. Send target system values byte by byte, in | |
3599 | increasing byte addresses. Only escape certain critical | |
3600 | characters. */ | |
3601 | for (nr_bytes = 0; | |
3602 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3603 | nr_bytes++) | |
c906108c | 3604 | { |
917317f4 JM |
3605 | switch (myaddr[nr_bytes] & 0xff) |
3606 | { | |
3607 | case '$': | |
3608 | case '#': | |
3609 | case 0x7d: | |
3610 | /* These must be escaped */ | |
3611 | *p++ = 0x7d; | |
3612 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3613 | break; | |
3614 | default: | |
3615 | *p++ = myaddr[nr_bytes] & 0xff; | |
3616 | break; | |
3617 | } | |
c906108c | 3618 | } |
917317f4 | 3619 | if (nr_bytes < todo) |
c906108c | 3620 | { |
917317f4 JM |
3621 | /* Escape chars have filled up the buffer prematurely, |
3622 | and we have actually sent fewer bytes than planned. | |
3623 | Fix-up the length field of the packet. Use the same | |
3624 | number of characters as before. */ | |
3625 | ||
3626 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3627 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3628 | } |
917317f4 JM |
3629 | break; |
3630 | case PACKET_DISABLE: | |
3631 | /* Normal mode: Send target system values byte by byte, in | |
3632 | increasing byte addresses. Each byte is encoded as a two hex | |
3633 | value. */ | |
2644f393 | 3634 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3635 | p += 2 * nr_bytes; |
917317f4 JM |
3636 | break; |
3637 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3638 | internal_error (__FILE__, __LINE__, |
3639 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3640 | default: |
8e65ff28 | 3641 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3642 | } |
917317f4 JM |
3643 | |
3644 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3645 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3646 | |
3647 | if (buf[0] == 'E') | |
3648 | { | |
3649 | /* There is no correspondance between what the remote protocol | |
3650 | uses for errors and errno codes. We would like a cleaner way | |
3651 | of representing errors (big enough to include errno codes, | |
3652 | bfd_error codes, and others). But for now just return EIO. */ | |
3653 | errno = EIO; | |
3654 | return 0; | |
3655 | } | |
3656 | ||
3657 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3658 | bytes than we'd planned. */ | |
3659 | return nr_bytes; | |
c906108c SS |
3660 | } |
3661 | ||
3662 | /* Read memory data directly from the remote machine. | |
3663 | This does not use the data cache; the data cache uses this. | |
3664 | MEMADDR is the address in the remote memory space. | |
3665 | MYADDR is the address of the buffer in our space. | |
3666 | LEN is the number of bytes. | |
3667 | ||
3668 | Returns number of bytes transferred, or 0 for error. */ | |
3669 | ||
917317f4 JM |
3670 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3671 | remote targets) shouldn't attempt to read the entire buffer. | |
3672 | Instead it should read a single packet worth of data and then | |
3673 | return the byte size of that packet to the caller. The caller (its | |
3674 | caller and its callers caller ;-) already contains code for | |
3675 | handling partial reads. */ | |
3676 | ||
c906108c | 3677 | static int |
fba45db2 | 3678 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3679 | { |
11cf8741 | 3680 | char *buf; |
c906108c | 3681 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3682 | long sizeof_buf; |
c906108c SS |
3683 | int origlen; |
3684 | ||
11cf8741 JM |
3685 | /* Create a buffer big enough for this packet. */ |
3686 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3687 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3688 | buf = alloca (sizeof_buf); | |
c906108c SS |
3689 | |
3690 | origlen = len; | |
3691 | while (len > 0) | |
3692 | { | |
c906108c SS |
3693 | char *p; |
3694 | int todo; | |
3695 | int i; | |
3696 | ||
c5aa993b | 3697 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3698 | |
3699 | /* construct "m"<memaddr>","<len>" */ | |
3700 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3701 | memaddr = remote_address_masked (memaddr); | |
3702 | p = buf; | |
3703 | *p++ = 'm'; | |
3704 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3705 | *p++ = ','; | |
3706 | p += hexnumstr (p, (ULONGEST) todo); | |
3707 | *p = '\0'; | |
3708 | ||
3709 | putpkt (buf); | |
c2d11a7d | 3710 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3711 | |
3712 | if (buf[0] == 'E') | |
3713 | { | |
3714 | /* There is no correspondance between what the remote protocol uses | |
3715 | for errors and errno codes. We would like a cleaner way of | |
3716 | representing errors (big enough to include errno codes, bfd_error | |
3717 | codes, and others). But for now just return EIO. */ | |
3718 | errno = EIO; | |
3719 | return 0; | |
3720 | } | |
3721 | ||
c5aa993b JM |
3722 | /* Reply describes memory byte by byte, |
3723 | each byte encoded as two hex characters. */ | |
c906108c SS |
3724 | |
3725 | p = buf; | |
30559e10 | 3726 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3727 | { |
30559e10 MS |
3728 | /* Reply is short. This means that we were able to read |
3729 | only part of what we wanted to. */ | |
3730 | return i + (origlen - len); | |
c906108c SS |
3731 | } |
3732 | myaddr += todo; | |
3733 | memaddr += todo; | |
3734 | len -= todo; | |
3735 | } | |
3736 | return origlen; | |
3737 | } | |
3738 | \f | |
3739 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3740 | transferring to or from debugger address BUFFER. Write to inferior if |
3741 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3742 | for error. TARGET is unused. */ |
392a587b | 3743 | |
c906108c SS |
3744 | /* ARGSUSED */ |
3745 | static int | |
c338868a | 3746 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3747 | int should_write, |
3748 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3749 | struct target_ops *target) | |
c906108c | 3750 | { |
392a587b JM |
3751 | CORE_ADDR targ_addr; |
3752 | int targ_len; | |
4930751a C |
3753 | int res; |
3754 | ||
392a587b JM |
3755 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3756 | if (targ_len <= 0) | |
c906108c | 3757 | return 0; |
c906108c | 3758 | |
4930751a C |
3759 | if (should_write) |
3760 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3761 | else | |
3762 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3763 | ||
3764 | return res; | |
c906108c SS |
3765 | } |
3766 | ||
c5aa993b | 3767 | |
c906108c SS |
3768 | #if 0 |
3769 | /* Enable after 4.12. */ | |
3770 | ||
3771 | void | |
c338868a KB |
3772 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3773 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3774 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3775 | { |
3776 | if (increment == -4 && len == 4) | |
3777 | { | |
3778 | long mask_long, data_long; | |
3779 | long data_found_long; | |
3780 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3781 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3782 | long returned_long[2]; |
3783 | char *p; | |
3784 | ||
3785 | mask_long = extract_unsigned_integer (mask, len); | |
3786 | data_long = extract_unsigned_integer (data, len); | |
3787 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3788 | putpkt (buf); | |
c2d11a7d | 3789 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
3790 | if (buf[0] == '\0') |
3791 | { | |
3792 | /* The stub doesn't support the 't' request. We might want to | |
3793 | remember this fact, but on the other hand the stub could be | |
3794 | switched on us. Maybe we should remember it only until | |
3795 | the next "target remote". */ | |
3796 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3797 | hirange, addr_found, data_found); | |
3798 | return; | |
3799 | } | |
3800 | ||
3801 | if (buf[0] == 'E') | |
3802 | /* There is no correspondance between what the remote protocol uses | |
3803 | for errors and errno codes. We would like a cleaner way of | |
3804 | representing errors (big enough to include errno codes, bfd_error | |
3805 | codes, and others). But for now just use EIO. */ | |
3806 | memory_error (EIO, startaddr); | |
3807 | p = buf; | |
3808 | addr_we_found = 0; | |
3809 | while (*p != '\0' && *p != ',') | |
3810 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3811 | if (*p == '\0') | |
3812 | error ("Protocol error: short return for search"); | |
3813 | ||
3814 | data_found_long = 0; | |
3815 | while (*p != '\0' && *p != ',') | |
3816 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3817 | /* Ignore anything after this comma, for future extensions. */ | |
3818 | ||
3819 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3820 | { | |
3821 | *addr_found = 0; | |
3822 | return; | |
3823 | } | |
3824 | ||
3825 | *addr_found = addr_we_found; | |
3826 | *data_found = store_unsigned_integer (data_we_found, len); | |
3827 | return; | |
3828 | } | |
3829 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3830 | hirange, addr_found, data_found); | |
3831 | } | |
3832 | #endif /* 0 */ | |
3833 | \f | |
3834 | static void | |
fba45db2 | 3835 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3836 | { |
3837 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3838 | } | |
3839 | \f | |
3840 | /* Stuff for dealing with the packets which are part of this protocol. | |
3841 | See comment at top of file for details. */ | |
3842 | ||
3843 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3844 | ||
3845 | static int | |
fba45db2 | 3846 | readchar (int timeout) |
c906108c SS |
3847 | { |
3848 | int ch; | |
3849 | ||
3850 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3851 | ||
2acceee2 JM |
3852 | if (ch >= 0) |
3853 | return (ch & 0x7f); | |
3854 | ||
3855 | switch ((enum serial_rc) ch) | |
c906108c SS |
3856 | { |
3857 | case SERIAL_EOF: | |
2acceee2 | 3858 | target_mourn_inferior (); |
c906108c | 3859 | error ("Remote connection closed"); |
2acceee2 | 3860 | /* no return */ |
c906108c SS |
3861 | case SERIAL_ERROR: |
3862 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3863 | /* no return */ |
c906108c | 3864 | case SERIAL_TIMEOUT: |
2acceee2 | 3865 | break; |
c906108c | 3866 | } |
2acceee2 | 3867 | return ch; |
c906108c SS |
3868 | } |
3869 | ||
3870 | /* Send the command in BUF to the remote machine, and read the reply | |
3871 | into BUF. Report an error if we get an error reply. */ | |
3872 | ||
3873 | static void | |
c2d11a7d JM |
3874 | remote_send (char *buf, |
3875 | long sizeof_buf) | |
c906108c SS |
3876 | { |
3877 | putpkt (buf); | |
c2d11a7d | 3878 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3879 | |
3880 | if (buf[0] == 'E') | |
3881 | error ("Remote failure reply: %s", buf); | |
3882 | } | |
3883 | ||
3884 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3885 | string notation. */ | |
3886 | ||
3887 | static void | |
fba45db2 | 3888 | print_packet (char *buf) |
c906108c SS |
3889 | { |
3890 | puts_filtered ("\""); | |
43e526b9 | 3891 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3892 | puts_filtered ("\""); |
3893 | } | |
3894 | ||
3895 | int | |
fba45db2 | 3896 | putpkt (char *buf) |
c906108c SS |
3897 | { |
3898 | return putpkt_binary (buf, strlen (buf)); | |
3899 | } | |
3900 | ||
3901 | /* Send a packet to the remote machine, with error checking. The data | |
3902 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3903 | to account for the $, # and checksum, and for a possible /0 if we are | |
3904 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3905 | ||
3906 | static int | |
fba45db2 | 3907 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3908 | { |
3909 | int i; | |
3910 | unsigned char csum = 0; | |
11cf8741 | 3911 | char *buf2 = alloca (cnt + 6); |
c2d11a7d JM |
3912 | long sizeof_junkbuf = PBUFSIZ; |
3913 | char *junkbuf = alloca (sizeof_junkbuf); | |
085dd6e6 | 3914 | |
c906108c SS |
3915 | int ch; |
3916 | int tcount = 0; | |
3917 | char *p; | |
3918 | ||
3919 | /* Copy the packet into buffer BUF2, encapsulating it | |
3920 | and giving it a checksum. */ | |
3921 | ||
c906108c SS |
3922 | p = buf2; |
3923 | *p++ = '$'; | |
3924 | ||
3925 | for (i = 0; i < cnt; i++) | |
3926 | { | |
3927 | csum += buf[i]; | |
3928 | *p++ = buf[i]; | |
3929 | } | |
3930 | *p++ = '#'; | |
3931 | *p++ = tohex ((csum >> 4) & 0xf); | |
3932 | *p++ = tohex (csum & 0xf); | |
3933 | ||
3934 | /* Send it over and over until we get a positive ack. */ | |
3935 | ||
3936 | while (1) | |
3937 | { | |
3938 | int started_error_output = 0; | |
3939 | ||
3940 | if (remote_debug) | |
3941 | { | |
3942 | *p = '\0'; | |
43e526b9 JM |
3943 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3944 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3945 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3946 | gdb_flush (gdb_stdlog); |
c906108c SS |
3947 | } |
3948 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3949 | perror_with_name ("putpkt: write failed"); | |
3950 | ||
3951 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3952 | while (1) | |
3953 | { | |
3954 | ch = readchar (remote_timeout); | |
3955 | ||
c5aa993b | 3956 | if (remote_debug) |
c906108c SS |
3957 | { |
3958 | switch (ch) | |
3959 | { | |
3960 | case '+': | |
1216fa2c | 3961 | case '-': |
c906108c SS |
3962 | case SERIAL_TIMEOUT: |
3963 | case '$': | |
3964 | if (started_error_output) | |
3965 | { | |
3966 | putchar_unfiltered ('\n'); | |
3967 | started_error_output = 0; | |
3968 | } | |
3969 | } | |
3970 | } | |
3971 | ||
3972 | switch (ch) | |
3973 | { | |
3974 | case '+': | |
3975 | if (remote_debug) | |
0f71a2f6 | 3976 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3977 | return 1; |
1216fa2c AC |
3978 | case '-': |
3979 | if (remote_debug) | |
3980 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3981 | case SERIAL_TIMEOUT: |
c5aa993b | 3982 | tcount++; |
c906108c SS |
3983 | if (tcount > 3) |
3984 | return 0; | |
3985 | break; /* Retransmit buffer */ | |
3986 | case '$': | |
3987 | { | |
40e3f985 FN |
3988 | if (remote_debug) |
3989 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
3990 | /* It's probably an old response, and we're out of sync. |
3991 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 3992 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 3993 | continue; /* Now, go look for + */ |
c906108c SS |
3994 | } |
3995 | default: | |
3996 | if (remote_debug) | |
3997 | { | |
3998 | if (!started_error_output) | |
3999 | { | |
4000 | started_error_output = 1; | |
0f71a2f6 | 4001 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4002 | } |
0f71a2f6 | 4003 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4004 | } |
4005 | continue; | |
4006 | } | |
4007 | break; /* Here to retransmit */ | |
4008 | } | |
4009 | ||
4010 | #if 0 | |
4011 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4012 | able to get out next time we call QUIT, without anything as |
4013 | violent as interrupt_query. If we want to provide a way out of | |
4014 | here without getting to the next QUIT, it should be based on | |
4015 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4016 | if (quit_flag) |
4017 | { | |
4018 | quit_flag = 0; | |
4019 | interrupt_query (); | |
4020 | } | |
4021 | #endif | |
4022 | } | |
4023 | } | |
4024 | ||
0f71a2f6 JM |
4025 | static int remote_cisco_mode; |
4026 | ||
c906108c SS |
4027 | /* Come here after finding the start of the frame. Collect the rest |
4028 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4029 | compression. No more than sizeof_buf-1 characters are read so that |
4030 | the buffer can be NUL terminated. | |
c906108c | 4031 | |
c2d11a7d JM |
4032 | Returns -1 on error, number of characters in buffer (ignoring the |
4033 | trailing NULL) on success. (could be extended to return one of the | |
4034 | SERIAL status indications). */ | |
4035 | ||
4036 | static long | |
4037 | read_frame (char *buf, | |
4038 | long sizeof_buf) | |
c906108c SS |
4039 | { |
4040 | unsigned char csum; | |
c2d11a7d | 4041 | long bc; |
c906108c SS |
4042 | int c; |
4043 | ||
4044 | csum = 0; | |
c2d11a7d | 4045 | bc = 0; |
c906108c SS |
4046 | |
4047 | while (1) | |
4048 | { | |
c2d11a7d | 4049 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4050 | c = readchar (remote_timeout); |
c906108c SS |
4051 | switch (c) |
4052 | { | |
4053 | case SERIAL_TIMEOUT: | |
4054 | if (remote_debug) | |
0f71a2f6 | 4055 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4056 | return -1; |
c906108c SS |
4057 | case '$': |
4058 | if (remote_debug) | |
0f71a2f6 JM |
4059 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4060 | gdb_stdlog); | |
c2d11a7d | 4061 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4062 | case '#': |
4063 | { | |
4064 | unsigned char pktcsum; | |
e1b09194 AC |
4065 | int check_0 = 0; |
4066 | int check_1 = 0; | |
c906108c | 4067 | |
c2d11a7d | 4068 | buf[bc] = '\0'; |
c906108c | 4069 | |
e1b09194 AC |
4070 | check_0 = readchar (remote_timeout); |
4071 | if (check_0 >= 0) | |
4072 | check_1 = readchar (remote_timeout); | |
4073 | ||
4074 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4075 | { | |
4076 | if (remote_debug) | |
4077 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4078 | return -1; | |
4079 | } | |
4080 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4081 | { |
4082 | if (remote_debug) | |
4083 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4084 | return -1; | |
4085 | } | |
c906108c | 4086 | |
e1b09194 | 4087 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4088 | if (csum == pktcsum) |
c2d11a7d | 4089 | return bc; |
c906108c | 4090 | |
c5aa993b | 4091 | if (remote_debug) |
c906108c | 4092 | { |
0f71a2f6 | 4093 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4094 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4095 | pktcsum, csum); |
4096 | fputs_filtered (buf, gdb_stdlog); | |
4097 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4098 | } |
c2d11a7d JM |
4099 | /* Number of characters in buffer ignoring trailing |
4100 | NUL. */ | |
4101 | return -1; | |
c906108c SS |
4102 | } |
4103 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4104 | { |
4105 | int repeat; | |
4106 | csum += c; | |
c906108c | 4107 | |
c2c6d25f JM |
4108 | if (remote_cisco_mode == 0) |
4109 | { | |
4110 | c = readchar (remote_timeout); | |
4111 | csum += c; | |
4112 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4113 | } | |
4114 | else | |
4115 | { | |
4116 | /* Cisco's run-length encoding variant uses two | |
4117 | hex chars to represent the repeat count. */ | |
4118 | ||
4119 | c = readchar (remote_timeout); | |
4120 | csum += c; | |
4121 | repeat = fromhex (c) << 4; | |
4122 | c = readchar (remote_timeout); | |
4123 | csum += c; | |
4124 | repeat += fromhex (c); | |
4125 | } | |
c906108c | 4126 | |
c2d11a7d JM |
4127 | /* The character before ``*'' is repeated. */ |
4128 | ||
c2c6d25f | 4129 | if (repeat > 0 && repeat <= 255 |
c2d11a7d JM |
4130 | && bc > 0 |
4131 | && bc + repeat < sizeof_buf - 1) | |
c2c6d25f | 4132 | { |
c2d11a7d JM |
4133 | memset (&buf[bc], buf[bc - 1], repeat); |
4134 | bc += repeat; | |
c2c6d25f JM |
4135 | continue; |
4136 | } | |
4137 | ||
c2d11a7d | 4138 | buf[bc] = '\0'; |
c2c6d25f JM |
4139 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4140 | puts_filtered (buf); | |
4141 | puts_filtered ("\n"); | |
c2d11a7d | 4142 | return -1; |
c2c6d25f | 4143 | } |
c906108c | 4144 | default: |
c2d11a7d | 4145 | if (bc < sizeof_buf - 1) |
c906108c | 4146 | { |
c2d11a7d | 4147 | buf[bc++] = c; |
c906108c SS |
4148 | csum += c; |
4149 | continue; | |
4150 | } | |
4151 | ||
c2d11a7d | 4152 | buf[bc] = '\0'; |
c906108c SS |
4153 | puts_filtered ("Remote packet too long: "); |
4154 | puts_filtered (buf); | |
4155 | puts_filtered ("\n"); | |
4156 | ||
c2d11a7d | 4157 | return -1; |
c906108c SS |
4158 | } |
4159 | } | |
4160 | } | |
4161 | ||
4162 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4163 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4164 | this is used (in synchronous mode) to wait for a target that is is | |
4165 | executing user code to stop. */ | |
d9fcf2fb JM |
4166 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4167 | don't have to change all the calls to getpkt to deal with the | |
4168 | return value, because at the moment I don't know what the right | |
4169 | thing to do it for those. */ | |
c906108c | 4170 | void |
c2d11a7d JM |
4171 | getpkt (char *buf, |
4172 | long sizeof_buf, | |
4173 | int forever) | |
d9fcf2fb JM |
4174 | { |
4175 | int timed_out; | |
4176 | ||
4177 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4178 | } | |
4179 | ||
4180 | ||
4181 | /* Read a packet from the remote machine, with error checking, and | |
4182 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4183 | this is used (in synchronous mode) to wait for a target that is is | |
4184 | executing user code to stop. If FOREVER == 0, this function is | |
4185 | allowed to time out gracefully and return an indication of this to | |
4186 | the caller. */ | |
3172dc30 | 4187 | static int |
d9fcf2fb JM |
4188 | getpkt_sane (char *buf, |
4189 | long sizeof_buf, | |
4190 | int forever) | |
c906108c SS |
4191 | { |
4192 | int c; | |
4193 | int tries; | |
4194 | int timeout; | |
4195 | int val; | |
4196 | ||
c5aa993b | 4197 | strcpy (buf, "timeout"); |
c906108c SS |
4198 | |
4199 | if (forever) | |
4200 | { | |
c906108c | 4201 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4202 | } |
4203 | ||
4204 | else | |
4205 | timeout = remote_timeout; | |
4206 | ||
4207 | #define MAX_TRIES 3 | |
4208 | ||
4209 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4210 | { | |
4211 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4212 | continuously, but if it pauses, we'll get a zero from readchar |
4213 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4214 | |
4215 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4216 | After that, we expect characters to arrive at a brisk pace. They |
4217 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4218 | |
4219 | do | |
4220 | { | |
4221 | c = readchar (timeout); | |
4222 | ||
4223 | if (c == SERIAL_TIMEOUT) | |
4224 | { | |
2acceee2 | 4225 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4226 | { |
2acceee2 | 4227 | QUIT; |
c906108c SS |
4228 | target_mourn_inferior (); |
4229 | error ("Watchdog has expired. Target detached.\n"); | |
4230 | } | |
c906108c | 4231 | if (remote_debug) |
0f71a2f6 | 4232 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4233 | goto retry; |
4234 | } | |
4235 | } | |
4236 | while (c != '$'); | |
4237 | ||
4238 | /* We've found the start of a packet, now collect the data. */ | |
4239 | ||
c2d11a7d | 4240 | val = read_frame (buf, sizeof_buf); |
c906108c | 4241 | |
c2d11a7d | 4242 | if (val >= 0) |
c906108c SS |
4243 | { |
4244 | if (remote_debug) | |
43e526b9 JM |
4245 | { |
4246 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4247 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4248 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4249 | } | |
c906108c | 4250 | SERIAL_WRITE (remote_desc, "+", 1); |
d9fcf2fb | 4251 | return 0; |
c906108c SS |
4252 | } |
4253 | ||
4254 | /* Try the whole thing again. */ | |
4255 | retry: | |
4256 | SERIAL_WRITE (remote_desc, "-", 1); | |
4257 | } | |
4258 | ||
4259 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4260 | ||
4261 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
4262 | SERIAL_WRITE (remote_desc, "+", 1); | |
d9fcf2fb | 4263 | return 1; |
c906108c SS |
4264 | } |
4265 | \f | |
4266 | static void | |
fba45db2 | 4267 | remote_kill (void) |
c906108c SS |
4268 | { |
4269 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4270 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4271 | if (kill_kludge) | |
4272 | { | |
4273 | kill_kludge = 0; | |
4274 | target_mourn_inferior (); | |
4275 | return; | |
4276 | } | |
4277 | ||
4278 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4279 | speaking terms with the remote system. */ | |
c5aa993b | 4280 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4281 | |
4282 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4283 | we do or not. For the existing stubs, kill is a noop. */ | |
4284 | target_mourn_inferior (); | |
4285 | } | |
4286 | ||
43ff13b4 JM |
4287 | /* Async version of remote_kill. */ |
4288 | static void | |
fba45db2 | 4289 | remote_async_kill (void) |
43ff13b4 JM |
4290 | { |
4291 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4292 | if (target_is_async_p ()) |
c2c6d25f | 4293 | SERIAL_ASYNC (remote_desc, NULL, 0); |
43ff13b4 JM |
4294 | |
4295 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4296 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4297 | if (kill_kludge) | |
4298 | { | |
4299 | kill_kludge = 0; | |
4300 | target_mourn_inferior (); | |
4301 | return; | |
4302 | } | |
4303 | ||
4304 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4305 | speaking terms with the remote system. */ | |
c5aa993b | 4306 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4307 | |
4308 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4309 | we do or not. For the existing stubs, kill is a noop. */ | |
4310 | target_mourn_inferior (); | |
4311 | } | |
4312 | ||
c906108c | 4313 | static void |
fba45db2 | 4314 | remote_mourn (void) |
c906108c SS |
4315 | { |
4316 | remote_mourn_1 (&remote_ops); | |
4317 | } | |
4318 | ||
53a5351d | 4319 | static void |
fba45db2 | 4320 | remote_async_mourn (void) |
53a5351d JM |
4321 | { |
4322 | remote_mourn_1 (&remote_async_ops); | |
4323 | } | |
4324 | ||
c906108c | 4325 | static void |
fba45db2 | 4326 | extended_remote_mourn (void) |
c906108c SS |
4327 | { |
4328 | /* We do _not_ want to mourn the target like this; this will | |
4329 | remove the extended remote target from the target stack, | |
4330 | and the next time the user says "run" it'll fail. | |
4331 | ||
4332 | FIXME: What is the right thing to do here? */ | |
4333 | #if 0 | |
4334 | remote_mourn_1 (&extended_remote_ops); | |
4335 | #endif | |
4336 | } | |
4337 | ||
4338 | /* Worker function for remote_mourn. */ | |
4339 | static void | |
fba45db2 | 4340 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4341 | { |
4342 | unpush_target (target); | |
4343 | generic_mourn_inferior (); | |
4344 | } | |
4345 | ||
4346 | /* In the extended protocol we want to be able to do things like | |
4347 | "run" and have them basically work as expected. So we need | |
4348 | a special create_inferior function. | |
4349 | ||
4350 | FIXME: One day add support for changing the exec file | |
4351 | we're debugging, arguments and an environment. */ | |
4352 | ||
4353 | static void | |
fba45db2 | 4354 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4355 | { |
4356 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4357 | the remote server. */ | |
4358 | remove_breakpoints (); | |
4359 | ||
4360 | /* Now restart the remote server. */ | |
4361 | extended_remote_restart (); | |
4362 | ||
4363 | /* Now put the breakpoints back in. This way we're safe if the | |
4364 | restart function works via a unix fork on the remote side. */ | |
4365 | insert_breakpoints (); | |
4366 | ||
4367 | /* Clean up from the last time we were running. */ | |
4368 | clear_proceed_status (); | |
4369 | ||
4370 | /* Let the remote process run. */ | |
4371 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4372 | } | |
4373 | ||
43ff13b4 JM |
4374 | /* Async version of extended_remote_create_inferior. */ |
4375 | static void | |
fba45db2 | 4376 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4377 | { |
4378 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4379 | the remote server. */ | |
4380 | remove_breakpoints (); | |
4381 | ||
4382 | /* If running asynchronously, register the target file descriptor | |
4383 | with the event loop. */ | |
2acceee2 JM |
4384 | if (event_loop_p && target_can_async_p ()) |
4385 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4386 | |
4387 | /* Now restart the remote server. */ | |
4388 | extended_remote_restart (); | |
4389 | ||
4390 | /* Now put the breakpoints back in. This way we're safe if the | |
4391 | restart function works via a unix fork on the remote side. */ | |
4392 | insert_breakpoints (); | |
4393 | ||
4394 | /* Clean up from the last time we were running. */ | |
4395 | clear_proceed_status (); | |
4396 | ||
4397 | /* Let the remote process run. */ | |
4398 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4399 | } | |
c906108c | 4400 | \f |
c5aa993b | 4401 | |
c906108c SS |
4402 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4403 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4404 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4405 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4406 | the standard routines that are in mem-break.c. */ | |
4407 | ||
4408 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4409 | the choice of breakpoint instruction affects target program design and | |
4410 | vice versa, and by making it user-tweakable, the special code here | |
4411 | goes away and we need fewer special GDB configurations. */ | |
4412 | ||
4413 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4414 | #define REMOTE_BREAKPOINT | |
4415 | #endif | |
4416 | ||
4417 | #ifdef REMOTE_BREAKPOINT | |
4418 | ||
4419 | /* If the target isn't bi-endian, just pretend it is. */ | |
4420 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4421 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4422 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4423 | #endif | |
4424 | ||
4425 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4426 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4427 | ||
4428 | #endif /* REMOTE_BREAKPOINT */ | |
4429 | ||
4430 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4431 | support. We read the contents of the target location and stash it, | |
4432 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4433 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4434 | memory allocated for saving the target contents. It is guaranteed | |
4435 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4436 | is accomplished via BREAKPOINT_MAX). */ | |
4437 | ||
4438 | static int | |
fba45db2 | 4439 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
4440 | { |
4441 | #ifdef REMOTE_BREAKPOINT | |
4442 | int val; | |
96baa820 JM |
4443 | #endif |
4444 | int bp_size; | |
4445 | ||
d471ea57 AC |
4446 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4447 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4448 | fails, and the user has explicitly requested the Z support then | |
4449 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4450 | |
d471ea57 | 4451 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4452 | { |
e514a9d6 JM |
4453 | char *buf = alloca (PBUFSIZ); |
4454 | char *p = buf; | |
96baa820 JM |
4455 | |
4456 | addr = remote_address_masked (addr); | |
4457 | *(p++) = 'Z'; | |
4458 | *(p++) = '0'; | |
4459 | *(p++) = ','; | |
4460 | p += hexnumstr (p, (ULONGEST) addr); | |
4461 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4462 | sprintf (p, ",%d", bp_size); | |
4463 | ||
4464 | putpkt (buf); | |
c2d11a7d | 4465 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4466 | |
d471ea57 | 4467 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4468 | { |
d471ea57 AC |
4469 | case PACKET_ERROR: |
4470 | return -1; | |
4471 | case PACKET_OK: | |
4472 | return 0; | |
4473 | case PACKET_UNKNOWN: | |
4474 | break; | |
96baa820 JM |
4475 | } |
4476 | } | |
c906108c | 4477 | |
96baa820 | 4478 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4479 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4480 | ||
4481 | if (val == 0) | |
4482 | { | |
4483 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4484 | val = target_write_memory (addr, (char *) big_break_insn, | |
4485 | sizeof big_break_insn); | |
4486 | else | |
4487 | val = target_write_memory (addr, (char *) little_break_insn, | |
4488 | sizeof little_break_insn); | |
4489 | } | |
4490 | ||
4491 | return val; | |
4492 | #else | |
4493 | return memory_insert_breakpoint (addr, contents_cache); | |
4494 | #endif /* REMOTE_BREAKPOINT */ | |
4495 | } | |
4496 | ||
4497 | static int | |
fba45db2 | 4498 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4499 | { |
96baa820 JM |
4500 | int bp_size; |
4501 | ||
d471ea57 | 4502 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4503 | { |
e514a9d6 JM |
4504 | char *buf = alloca (PBUFSIZ); |
4505 | char *p = buf; | |
96baa820 JM |
4506 | |
4507 | *(p++) = 'z'; | |
4508 | *(p++) = '0'; | |
4509 | *(p++) = ','; | |
4510 | ||
4511 | addr = remote_address_masked (addr); | |
4512 | p += hexnumstr (p, (ULONGEST) addr); | |
4513 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
4514 | sprintf (p, ",%d", bp_size); | |
4515 | ||
4516 | putpkt (buf); | |
c2d11a7d | 4517 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4518 | |
4519 | return (buf[0] == 'E'); | |
4520 | } | |
4521 | ||
c906108c SS |
4522 | #ifdef REMOTE_BREAKPOINT |
4523 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4524 | #else | |
4525 | return memory_remove_breakpoint (addr, contents_cache); | |
4526 | #endif /* REMOTE_BREAKPOINT */ | |
4527 | } | |
4528 | ||
d471ea57 AC |
4529 | static int |
4530 | watchpoint_to_Z_packet (int type) | |
4531 | { | |
4532 | switch (type) | |
4533 | { | |
4534 | case hw_write: | |
4535 | return 2; | |
4536 | break; | |
4537 | case hw_read: | |
4538 | return 3; | |
4539 | break; | |
4540 | case hw_access: | |
4541 | return 4; | |
4542 | break; | |
4543 | default: | |
8e65ff28 AC |
4544 | internal_error (__FILE__, __LINE__, |
4545 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4546 | } |
4547 | } | |
4548 | ||
4549 | /* FIXME: This function should be static and a member of the remote | |
4550 | target vector. */ | |
4551 | ||
96baa820 | 4552 | int |
fba45db2 | 4553 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4554 | { |
e514a9d6 JM |
4555 | char *buf = alloca (PBUFSIZ); |
4556 | char *p; | |
d471ea57 | 4557 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4558 | |
d471ea57 AC |
4559 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4560 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4561 | remote_protocol_Z[packet].name, | |
4562 | remote_protocol_Z[packet].title); | |
96baa820 | 4563 | |
d471ea57 | 4564 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4565 | p = strchr (buf, '\0'); |
4566 | addr = remote_address_masked (addr); | |
4567 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4568 | sprintf (p, ",%x", len); |
96baa820 JM |
4569 | |
4570 | putpkt (buf); | |
c2d11a7d | 4571 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4572 | |
d471ea57 AC |
4573 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4574 | { | |
4575 | case PACKET_ERROR: | |
4576 | case PACKET_UNKNOWN: | |
4577 | return -1; | |
4578 | case PACKET_OK: | |
4579 | return 0; | |
4580 | } | |
8e65ff28 AC |
4581 | internal_error (__FILE__, __LINE__, |
4582 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4583 | } |
4584 | ||
d471ea57 AC |
4585 | /* FIXME: This function should be static and a member of the remote |
4586 | target vector. */ | |
4587 | ||
96baa820 | 4588 | int |
fba45db2 | 4589 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4590 | { |
e514a9d6 JM |
4591 | char *buf = alloca (PBUFSIZ); |
4592 | char *p; | |
d471ea57 AC |
4593 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4594 | ||
4595 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4596 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4597 | remote_protocol_Z[packet].name, | |
4598 | remote_protocol_Z[packet].title); | |
96baa820 | 4599 | |
d471ea57 | 4600 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4601 | p = strchr (buf, '\0'); |
4602 | addr = remote_address_masked (addr); | |
4603 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4604 | sprintf (p, ",%x", len); |
96baa820 | 4605 | putpkt (buf); |
c2d11a7d | 4606 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4607 | |
d471ea57 AC |
4608 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4609 | { | |
4610 | case PACKET_ERROR: | |
4611 | case PACKET_UNKNOWN: | |
4612 | return -1; | |
4613 | case PACKET_OK: | |
4614 | return 0; | |
4615 | } | |
8e65ff28 AC |
4616 | internal_error (__FILE__, __LINE__, |
4617 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4618 | } |
4619 | ||
d471ea57 AC |
4620 | /* FIXME: This function should be static and a member of the remote |
4621 | target vector. */ | |
4622 | ||
96baa820 | 4623 | int |
fba45db2 | 4624 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4625 | { |
e514a9d6 JM |
4626 | char *buf = alloca (PBUFSIZ); |
4627 | char *p = buf; | |
96baa820 | 4628 | |
d471ea57 AC |
4629 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4630 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4631 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4632 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4633 | ||
96baa820 JM |
4634 | *(p++) = 'Z'; |
4635 | *(p++) = '1'; | |
4636 | *(p++) = ','; | |
4637 | ||
4638 | addr = remote_address_masked (addr); | |
4639 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4640 | sprintf (p, ",%x", len); |
96baa820 JM |
4641 | |
4642 | putpkt (buf); | |
c2d11a7d | 4643 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4644 | |
d471ea57 AC |
4645 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4646 | { | |
4647 | case PACKET_ERROR: | |
4648 | case PACKET_UNKNOWN: | |
4649 | return -1; | |
4650 | case PACKET_OK: | |
4651 | return 0; | |
4652 | } | |
8e65ff28 AC |
4653 | internal_error (__FILE__, __LINE__, |
4654 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4655 | } |
4656 | ||
d471ea57 AC |
4657 | /* FIXME: This function should be static and a member of the remote |
4658 | target vector. */ | |
4659 | ||
96baa820 | 4660 | int |
fba45db2 | 4661 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4662 | { |
e514a9d6 JM |
4663 | char *buf = alloca (PBUFSIZ); |
4664 | char *p = buf; | |
96baa820 | 4665 | |
d471ea57 AC |
4666 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4667 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4668 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4669 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4670 | ||
96baa820 JM |
4671 | *(p++) = 'z'; |
4672 | *(p++) = '1'; | |
4673 | *(p++) = ','; | |
4674 | ||
4675 | addr = remote_address_masked (addr); | |
4676 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4677 | sprintf (p, ",%x", len); |
96baa820 JM |
4678 | |
4679 | putpkt(buf); | |
c2d11a7d | 4680 | getpkt (buf, PBUFSIZ, 0); |
96baa820 | 4681 | |
d471ea57 AC |
4682 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4683 | { | |
4684 | case PACKET_ERROR: | |
4685 | case PACKET_UNKNOWN: | |
4686 | return -1; | |
4687 | case PACKET_OK: | |
4688 | return 0; | |
4689 | } | |
8e65ff28 AC |
4690 | internal_error (__FILE__, __LINE__, |
4691 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4692 | } |
96baa820 | 4693 | |
c906108c SS |
4694 | /* Some targets are only capable of doing downloads, and afterwards |
4695 | they switch to the remote serial protocol. This function provides | |
4696 | a clean way to get from the download target to the remote target. | |
4697 | It's basically just a wrapper so that we don't have to expose any | |
4698 | of the internal workings of remote.c. | |
4699 | ||
4700 | Prior to calling this routine, you should shutdown the current | |
4701 | target code, else you will get the "A program is being debugged | |
4702 | already..." message. Usually a call to pop_target() suffices. */ | |
4703 | ||
4704 | void | |
fba45db2 | 4705 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4706 | { |
4707 | printf_filtered ("Switching to remote protocol\n"); | |
4708 | remote_open (name, from_tty); | |
4709 | } | |
4710 | ||
4711 | /* Other targets want to use the entire remote serial module but with | |
4712 | certain remote_ops overridden. */ | |
4713 | ||
4714 | void | |
fba45db2 KB |
4715 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4716 | int extended_p) | |
c906108c SS |
4717 | { |
4718 | printf_filtered ("Selecting the %sremote protocol\n", | |
4719 | (extended_p ? "extended-" : "")); | |
4720 | remote_open_1 (name, from_tty, target, extended_p); | |
4721 | } | |
4722 | ||
4723 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4724 | ||
c5aa993b JM |
4725 | static unsigned long crc32_table[256] = |
4726 | {0, 0}; | |
c906108c SS |
4727 | |
4728 | static unsigned long | |
fba45db2 | 4729 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4730 | { |
c5aa993b | 4731 | if (!crc32_table[1]) |
c906108c SS |
4732 | { |
4733 | /* Initialize the CRC table and the decoding table. */ | |
4734 | int i, j; | |
4735 | unsigned int c; | |
4736 | ||
4737 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4738 | { |
4739 | for (c = i << 24, j = 8; j > 0; --j) | |
4740 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4741 | crc32_table[i] = c; | |
4742 | } | |
c906108c SS |
4743 | } |
4744 | ||
4745 | while (len--) | |
4746 | { | |
4747 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4748 | buf++; | |
4749 | } | |
4750 | return crc; | |
4751 | } | |
4752 | ||
4753 | /* compare-sections command | |
4754 | ||
4755 | With no arguments, compares each loadable section in the exec bfd | |
4756 | with the same memory range on the target, and reports mismatches. | |
4757 | Useful for verifying the image on the target against the exec file. | |
4758 | Depends on the target understanding the new "qCRC:" request. */ | |
4759 | ||
e514a9d6 JM |
4760 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4761 | target method (target verify memory) and generic version of the | |
4762 | actual command. This will allow other high-level code (especially | |
4763 | generic_load()) to make use of this target functionality. */ | |
4764 | ||
c906108c | 4765 | static void |
fba45db2 | 4766 | compare_sections_command (char *args, int from_tty) |
c906108c SS |
4767 | { |
4768 | asection *s; | |
4769 | unsigned long host_crc, target_crc; | |
4770 | extern bfd *exec_bfd; | |
4771 | struct cleanup *old_chain; | |
085dd6e6 JM |
4772 | char *tmp; |
4773 | char *sectdata; | |
ce359b09 | 4774 | const char *sectname; |
085dd6e6 | 4775 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
4776 | bfd_size_type size; |
4777 | bfd_vma lma; | |
4778 | int matched = 0; | |
4779 | int mismatched = 0; | |
4780 | ||
4781 | if (!exec_bfd) | |
4782 | error ("command cannot be used without an exec file"); | |
4783 | if (!current_target.to_shortname || | |
4784 | strcmp (current_target.to_shortname, "remote") != 0) | |
4785 | error ("command can only be used with remote target"); | |
4786 | ||
c5aa993b | 4787 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4788 | { |
4789 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4790 | continue; /* skip non-loadable section */ |
c906108c SS |
4791 | |
4792 | size = bfd_get_section_size_before_reloc (s); | |
4793 | if (size == 0) | |
c5aa993b | 4794 | continue; /* skip zero-length section */ |
c906108c | 4795 | |
ce359b09 | 4796 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4797 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4798 | continue; /* not the section selected by user */ |
c906108c | 4799 | |
c5aa993b | 4800 | matched = 1; /* do this section */ |
c906108c SS |
4801 | lma = s->lma; |
4802 | /* FIXME: assumes lma can fit into long */ | |
4803 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4804 | putpkt (buf); | |
4805 | ||
4806 | /* be clever; compute the host_crc before waiting for target reply */ | |
4807 | sectdata = xmalloc (size); | |
b8c9b27d | 4808 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4809 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4810 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4811 | ||
c2d11a7d | 4812 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4813 | if (buf[0] == 'E') |
4814 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4815 | sectname, lma, lma + size); | |
4816 | if (buf[0] != 'C') | |
4817 | error ("remote target does not support this operation"); | |
4818 | ||
4819 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4820 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4821 | ||
d4f3574e SS |
4822 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4823 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4824 | if (host_crc == target_crc) |
4825 | printf_filtered ("matched.\n"); | |
4826 | else | |
c5aa993b JM |
4827 | { |
4828 | printf_filtered ("MIS-MATCHED!\n"); | |
4829 | mismatched++; | |
4830 | } | |
c906108c SS |
4831 | |
4832 | do_cleanups (old_chain); | |
4833 | } | |
4834 | if (mismatched > 0) | |
4835 | warning ("One or more sections of the remote executable does not match\n\ | |
4836 | the loaded file\n"); | |
4837 | if (args && !matched) | |
4838 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4839 | } | |
4840 | ||
4841 | static int | |
fba45db2 | 4842 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c SS |
4843 | { |
4844 | int i; | |
085dd6e6 | 4845 | char *buf2 = alloca (PBUFSIZ); |
c906108c | 4846 | char *p2 = &buf2[0]; |
c906108c | 4847 | |
c5aa993b | 4848 | if (!bufsiz) |
c906108c SS |
4849 | error ("null pointer to remote bufer size specified"); |
4850 | ||
cce74817 | 4851 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4852 | the caller know and return what the minimum size is */ |
4853 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4854 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4855 | { |
4856 | *bufsiz = PBUFSIZ; | |
4857 | return -1; | |
4858 | } | |
4859 | ||
4860 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4861 | if (!remote_desc) |
c906108c SS |
4862 | error ("remote query is only available after target open"); |
4863 | ||
4864 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4865 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4866 | error ("invalid remote query type"); |
4867 | ||
c5aa993b | 4868 | if (!buf) |
c906108c SS |
4869 | error ("null remote query specified"); |
4870 | ||
c5aa993b | 4871 | if (!outbuf) |
c906108c SS |
4872 | error ("remote query requires a buffer to receive data"); |
4873 | ||
4874 | outbuf[0] = '\0'; | |
4875 | ||
4876 | *p2++ = 'q'; | |
4877 | *p2++ = query_type; | |
4878 | ||
4879 | /* we used one buffer char for the remote protocol q command and another | |
4880 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4881 | plus one extra in case we are debugging (remote_debug), | |
4882 | we have PBUFZIZ - 7 left to pack the query string */ | |
4883 | i = 0; | |
c5aa993b | 4884 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4885 | { |
4886 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4887 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4888 | error ("illegal characters in query string"); | |
c906108c SS |
4889 | |
4890 | *p2++ = buf[i]; | |
4891 | i++; | |
4892 | } | |
4893 | *p2 = buf[i]; | |
4894 | ||
c5aa993b | 4895 | if (buf[i]) |
c906108c SS |
4896 | error ("query larger than available buffer"); |
4897 | ||
4898 | i = putpkt (buf2); | |
c5aa993b JM |
4899 | if (i < 0) |
4900 | return i; | |
c906108c | 4901 | |
c2d11a7d | 4902 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
4903 | |
4904 | return 0; | |
4905 | } | |
4906 | ||
96baa820 JM |
4907 | static void |
4908 | remote_rcmd (char *command, | |
d9fcf2fb | 4909 | struct ui_file *outbuf) |
96baa820 JM |
4910 | { |
4911 | int i; | |
4912 | char *buf = alloca (PBUFSIZ); | |
4913 | char *p = buf; | |
4914 | ||
4915 | if (!remote_desc) | |
4916 | error ("remote rcmd is only available after target open"); | |
4917 | ||
7be570e7 JM |
4918 | /* Send a NULL command across as an empty command */ |
4919 | if (command == NULL) | |
4920 | command = ""; | |
4921 | ||
96baa820 JM |
4922 | /* The query prefix */ |
4923 | strcpy (buf, "qRcmd,"); | |
4924 | p = strchr (buf, '\0'); | |
4925 | ||
4926 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > PBUFSIZ) | |
4927 | error ("\"monitor\" command ``%s'' is too long\n", command); | |
4928 | ||
4929 | /* Encode the actual command */ | |
30559e10 | 4930 | bin2hex (command, p, 0); |
96baa820 JM |
4931 | |
4932 | if (putpkt (buf) < 0) | |
4933 | error ("Communication problem with target\n"); | |
4934 | ||
4935 | /* get/display the response */ | |
4936 | while (1) | |
4937 | { | |
4938 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
4939 | buf[0] = '\0'; | |
c2d11a7d | 4940 | getpkt (buf, PBUFSIZ, 0); |
96baa820 JM |
4941 | if (buf[0] == '\0') |
4942 | error ("Target does not support this command\n"); | |
4943 | if (buf[0] == 'O' && buf[1] != 'K') | |
4944 | { | |
4945 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
4946 | continue; | |
4947 | } | |
4948 | if (strcmp (buf, "OK") == 0) | |
4949 | break; | |
7be570e7 JM |
4950 | if (strlen (buf) == 3 && buf[0] == 'E' |
4951 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4952 | { | |
4953 | error ("Protocol error with Rcmd"); | |
4954 | } | |
96baa820 JM |
4955 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4956 | { | |
4957 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4958 | fputc_unfiltered (c, outbuf); | |
4959 | } | |
4960 | break; | |
4961 | } | |
4962 | } | |
4963 | ||
c906108c | 4964 | static void |
fba45db2 | 4965 | packet_command (char *args, int from_tty) |
c906108c | 4966 | { |
085dd6e6 | 4967 | char *buf = alloca (PBUFSIZ); |
c906108c | 4968 | |
c5aa993b | 4969 | if (!remote_desc) |
c906108c SS |
4970 | error ("command can only be used with remote target"); |
4971 | ||
c5aa993b | 4972 | if (!args) |
c906108c SS |
4973 | error ("remote-packet command requires packet text as argument"); |
4974 | ||
4975 | puts_filtered ("sending: "); | |
4976 | print_packet (args); | |
4977 | puts_filtered ("\n"); | |
4978 | putpkt (args); | |
4979 | ||
c2d11a7d | 4980 | getpkt (buf, PBUFSIZ, 0); |
c906108c SS |
4981 | puts_filtered ("received: "); |
4982 | print_packet (buf); | |
4983 | puts_filtered ("\n"); | |
4984 | } | |
4985 | ||
4986 | #if 0 | |
4987 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4988 | ||
a14ed312 | 4989 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4990 | |
a14ed312 | 4991 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4992 | |
a14ed312 | 4993 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4994 | |
a14ed312 | 4995 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4996 | |
a14ed312 | 4997 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 4998 | |
a14ed312 | 4999 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5000 | |
a14ed312 | 5001 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5002 | |
a14ed312 | 5003 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5004 | |
a14ed312 | 5005 | static void init_remote_threadtests (void); |
c906108c | 5006 | |
c5aa993b | 5007 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5008 | |
5009 | static void | |
fba45db2 | 5010 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5011 | { |
5012 | int sample_thread = SAMPLE_THREAD; | |
5013 | ||
5014 | printf_filtered ("Remote threadset test\n"); | |
5015 | set_thread (sample_thread, 1); | |
5016 | } | |
5017 | ||
5018 | ||
5019 | static void | |
fba45db2 | 5020 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5021 | { |
5022 | int sample_thread = SAMPLE_THREAD; | |
5023 | ||
39f77062 | 5024 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5025 | printf_filtered ("PASS: Thread alive test\n"); |
5026 | else | |
5027 | printf_filtered ("FAIL: Thread alive test\n"); | |
5028 | } | |
5029 | ||
a14ed312 | 5030 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5031 | |
5032 | void | |
fba45db2 | 5033 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5034 | { |
5035 | char hexid[20]; | |
5036 | ||
5037 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5038 | hexid[16] = 0; | |
5039 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5040 | } | |
5041 | ||
5042 | static void | |
fba45db2 | 5043 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5044 | { |
5045 | int startflag = 1; | |
5046 | threadref nextthread; | |
5047 | int done, result_count; | |
5048 | threadref threadlist[3]; | |
5049 | ||
5050 | printf_filtered ("Remote Threadlist test\n"); | |
5051 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5052 | &result_count, &threadlist[0])) | |
5053 | printf_filtered ("FAIL: threadlist test\n"); | |
5054 | else | |
5055 | { | |
5056 | threadref *scan = threadlist; | |
5057 | threadref *limit = scan + result_count; | |
5058 | ||
5059 | while (scan < limit) | |
5060 | output_threadid (" thread ", scan++); | |
5061 | } | |
5062 | } | |
5063 | ||
5064 | void | |
fba45db2 | 5065 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5066 | { |
5067 | output_threadid ("Threadid: ", &info->threadid); | |
5068 | printf_filtered ("Name: %s\n ", info->shortname); | |
5069 | printf_filtered ("State: %s\n", info->display); | |
5070 | printf_filtered ("other: %s\n\n", info->more_display); | |
5071 | } | |
5072 | ||
5073 | int | |
fba45db2 | 5074 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5075 | { |
5076 | int result; | |
5077 | int set; | |
5078 | struct gdb_ext_thread_info threadinfo; | |
5079 | ||
5080 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5081 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5082 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5083 | display_thread_info (&threadinfo); | |
5084 | return result; | |
5085 | } | |
5086 | ||
5087 | static void | |
fba45db2 | 5088 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5089 | { |
5090 | int athread = SAMPLE_THREAD; | |
5091 | threadref thread; | |
5092 | int set; | |
5093 | ||
5094 | int_to_threadref (&thread, athread); | |
5095 | printf_filtered ("Remote Threadinfo test\n"); | |
5096 | if (!get_and_display_threadinfo (&thread)) | |
5097 | printf_filtered ("FAIL cannot get thread info\n"); | |
5098 | } | |
5099 | ||
5100 | static int | |
fba45db2 | 5101 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5102 | { |
5103 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5104 | return get_and_display_threadinfo (ref); | |
5105 | } | |
5106 | ||
5107 | static void | |
fba45db2 | 5108 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5109 | { |
5110 | printf_filtered ("Remote Threadlist update test\n"); | |
5111 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5112 | } | |
5113 | ||
5114 | static void | |
5115 | init_remote_threadtests (void) | |
5116 | { | |
5117 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5118 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5119 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5120 | "Fetch and display info about one thread"); | |
5121 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5122 | "Test setting to a different thread"); | |
5123 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5124 | "Iterate through updating all remote thread info"); | |
5125 | add_com ("talive", class_obscure, threadalive_test, | |
5126 | " Remote thread alive test "); | |
5127 | } | |
5128 | ||
5129 | #endif /* 0 */ | |
5130 | ||
f3fb8c85 MS |
5131 | /* Convert a thread ID to a string. Returns the string in a static |
5132 | buffer. */ | |
5133 | ||
5134 | static char * | |
39f77062 | 5135 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5136 | { |
5137 | static char buf[30]; | |
5138 | ||
39f77062 | 5139 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5140 | return buf; |
5141 | } | |
5142 | ||
c906108c | 5143 | static void |
fba45db2 | 5144 | init_remote_ops (void) |
c906108c | 5145 | { |
c5aa993b | 5146 | remote_ops.to_shortname = "remote"; |
c906108c | 5147 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5148 | remote_ops.to_doc = |
c906108c | 5149 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5150 | Specify the serial device it is connected to\n\ |
5151 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5152 | remote_ops.to_open = remote_open; |
5153 | remote_ops.to_close = remote_close; | |
c906108c | 5154 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5155 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5156 | remote_ops.to_wait = remote_wait; |
5157 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5158 | remote_ops.to_store_registers = remote_store_registers; | |
5159 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5160 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5161 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5162 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5163 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5164 | remote_ops.to_kill = remote_kill; |
5165 | remote_ops.to_load = generic_load; | |
c906108c SS |
5166 | remote_ops.to_mourn_inferior = remote_mourn; |
5167 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5168 | remote_ops.to_find_new_threads = remote_threads_info; |
9d1f7ab2 | 5169 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
f3fb8c85 | 5170 | remote_ops.to_pid_to_str = remote_pid_to_str; |
c906108c SS |
5171 | remote_ops.to_stop = remote_stop; |
5172 | remote_ops.to_query = remote_query; | |
96baa820 | 5173 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5174 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5175 | remote_ops.to_has_all_memory = 1; |
5176 | remote_ops.to_has_memory = 1; | |
5177 | remote_ops.to_has_stack = 1; | |
5178 | remote_ops.to_has_registers = 1; | |
5179 | remote_ops.to_has_execution = 1; | |
5180 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5181 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5182 | } |
5183 | ||
5184 | /* Set up the extended remote vector by making a copy of the standard | |
5185 | remote vector and adding to it. */ | |
5186 | ||
5187 | static void | |
fba45db2 | 5188 | init_extended_remote_ops (void) |
c906108c SS |
5189 | { |
5190 | extended_remote_ops = remote_ops; | |
5191 | ||
0f71a2f6 | 5192 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5193 | extended_remote_ops.to_longname = |
c906108c | 5194 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5195 | extended_remote_ops.to_doc = |
c906108c SS |
5196 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5197 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5198 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5199 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5200 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5201 | } |
5202 | ||
5203 | /* | |
5204 | * Command: info remote-process | |
5205 | * | |
5206 | * This implements Cisco's version of the "info proc" command. | |
5207 | * | |
5208 | * This query allows the target stub to return an arbitrary string | |
5209 | * (or strings) giving arbitrary information about the target process. | |
5210 | * This is optional; the target stub isn't required to implement it. | |
5211 | * | |
5212 | * Syntax: qfProcessInfo request first string | |
5213 | * qsProcessInfo request subsequent string | |
5214 | * reply: 'O'<hex-encoded-string> | |
5215 | * 'l' last reply (empty) | |
5216 | */ | |
5217 | ||
5218 | static void | |
c2d11a7d | 5219 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5220 | { |
085dd6e6 | 5221 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
5222 | |
5223 | if (remote_desc == 0) | |
5224 | error ("Command can only be used when connected to the remote target."); | |
5225 | ||
5226 | putpkt ("qfProcessInfo"); | |
c2d11a7d | 5227 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 | 5228 | if (buf[0] == 0) |
c5aa993b | 5229 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5230 | |
5231 | if (buf[0] == 'E') | |
5232 | error ("info proc: target error."); | |
5233 | ||
c5aa993b | 5234 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5235 | { |
5236 | remote_console_output (&buf[1]); | |
5237 | putpkt ("qsProcessInfo"); | |
c2d11a7d | 5238 | getpkt (buf, PBUFSIZ, 0); |
0f71a2f6 JM |
5239 | } |
5240 | } | |
5241 | ||
5242 | /* | |
5243 | * Target Cisco | |
5244 | */ | |
5245 | ||
5246 | static void | |
c2d11a7d | 5247 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5248 | { |
5249 | if (name == 0) | |
5250 | error ( | |
c5aa993b | 5251 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5252 | device is attached to the remote system (e.g. host:port)."); |
5253 | ||
6426a772 JM |
5254 | /* See FIXME above */ |
5255 | wait_forever_enabled_p = 1; | |
5256 | ||
0f71a2f6 JM |
5257 | target_preopen (from_tty); |
5258 | ||
5259 | unpush_target (&remote_cisco_ops); | |
5260 | ||
0f71a2f6 JM |
5261 | remote_desc = SERIAL_OPEN (name); |
5262 | if (!remote_desc) | |
5263 | perror_with_name (name); | |
5264 | ||
5265 | /* | |
5266 | * If a baud rate was specified on the gdb command line it will | |
5267 | * be greater than the initial value of -1. If it is, use it otherwise | |
5268 | * default to 9600 | |
5269 | */ | |
5270 | ||
5271 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 5272 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
5273 | { |
5274 | SERIAL_CLOSE (remote_desc); | |
5275 | perror_with_name (name); | |
5276 | } | |
5277 | ||
5278 | SERIAL_RAW (remote_desc); | |
5279 | ||
5280 | /* If there is something sitting in the buffer we might take it as a | |
5281 | response to a command, which would be bad. */ | |
5282 | SERIAL_FLUSH_INPUT (remote_desc); | |
5283 | ||
5284 | if (from_tty) | |
5285 | { | |
5286 | puts_filtered ("Remote debugging using "); | |
5287 | puts_filtered (name); | |
5288 | puts_filtered ("\n"); | |
5289 | } | |
5290 | ||
5291 | remote_cisco_mode = 1; | |
5292 | ||
5293 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5294 | ||
d471ea57 | 5295 | init_all_packet_configs (); |
0f71a2f6 | 5296 | |
c5aa993b | 5297 | general_thread = -2; |
0f71a2f6 JM |
5298 | continue_thread = -2; |
5299 | ||
9d1f7ab2 MS |
5300 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5301 | use_threadinfo_query = 1; | |
5302 | use_threadextra_query = 1; | |
5303 | ||
0f71a2f6 JM |
5304 | /* Without this, some commands which require an active target (such |
5305 | as kill) won't work. This variable serves (at least) double duty | |
5306 | as both the pid of the target process (if it has such), and as a | |
5307 | flag indicating that a target is active. These functions should | |
5308 | be split out into seperate variables, especially since GDB will | |
5309 | someday have a notion of debugging several processes. */ | |
39f77062 | 5310 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 JM |
5311 | |
5312 | /* Start the remote connection; if error (0), discard this target. */ | |
5313 | ||
c5aa993b JM |
5314 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5315 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5316 | RETURN_MASK_ALL)) |
5317 | { | |
5318 | pop_target (); | |
5319 | return; | |
5320 | } | |
5321 | } | |
5322 | ||
5323 | static void | |
c2d11a7d | 5324 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5325 | { |
5326 | remote_cisco_mode = 0; | |
5327 | remote_close (quitting); | |
5328 | } | |
5329 | ||
c5aa993b | 5330 | static void |
8ab86381 | 5331 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5332 | { |
5333 | remote_mourn_1 (&remote_cisco_ops); | |
5334 | } | |
5335 | ||
c5aa993b JM |
5336 | enum |
5337 | { | |
5338 | READ_MORE, | |
5339 | FATAL_ERROR, | |
5340 | ENTER_DEBUG, | |
0f71a2f6 | 5341 | DISCONNECT_TELNET |
c5aa993b JM |
5342 | } |
5343 | minitelnet_return; | |
0f71a2f6 JM |
5344 | |
5345 | /* shared between readsocket() and readtty() */ | |
5346 | static char *tty_input; | |
5347 | ||
5348 | static int escape_count; | |
5349 | static int echo_check; | |
5350 | extern int quit_flag; | |
5351 | ||
5352 | static int | |
c2d11a7d | 5353 | readsocket (void) |
0f71a2f6 JM |
5354 | { |
5355 | int data; | |
5356 | ||
5357 | /* Loop until the socket doesn't have any more data */ | |
5358 | ||
c5aa993b | 5359 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5360 | { |
5361 | /* Check for the escape sequence */ | |
c5aa993b | 5362 | if (data == '|') |
0f71a2f6 JM |
5363 | { |
5364 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5365 | if (++escape_count == 4) |
0f71a2f6 JM |
5366 | { |
5367 | return ENTER_DEBUG; | |
5368 | } | |
c5aa993b JM |
5369 | else |
5370 | { /* This is a '|', but not the fourth in a row. | |
5371 | Continue without echoing it. If it isn't actually | |
5372 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5373 | continue; |
5374 | } | |
5375 | } | |
c5aa993b JM |
5376 | else |
5377 | /* Not a '|' */ | |
5378 | { | |
0f71a2f6 JM |
5379 | /* Ensure any pending '|'s are flushed. */ |
5380 | ||
c5aa993b JM |
5381 | for (; escape_count > 0; escape_count--) |
5382 | putchar ('|'); | |
0f71a2f6 | 5383 | } |
0f71a2f6 | 5384 | |
c5aa993b JM |
5385 | if (data == '\r') /* If this is a return character, */ |
5386 | continue; /* - just supress it. */ | |
5387 | ||
5388 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5389 | { |
5390 | if (tty_input[echo_check] == data) | |
5391 | { | |
c5aa993b JM |
5392 | echo_check++; /* Character matched user input: */ |
5393 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5394 | } |
c5aa993b JM |
5395 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5396 | { /* End of the line (and of echo checking). */ | |
5397 | echo_check = -1; /* No more echo supression */ | |
5398 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5399 | } |
5400 | else | |
c5aa993b JM |
5401 | { /* Failed check for echo of user input. |
5402 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5403 | int j; |
5404 | ||
c5aa993b | 5405 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5406 | putchar (tty_input[j]); |
5407 | echo_check = -1; | |
5408 | } | |
5409 | } | |
c5aa993b | 5410 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5411 | } |
5412 | ||
c5aa993b JM |
5413 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5414 | return READ_MORE; /* Try to read some more */ | |
5415 | else | |
5416 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5417 | } |
5418 | ||
5419 | static int | |
c2d11a7d | 5420 | readtty (void) |
0f71a2f6 | 5421 | { |
0f71a2f6 JM |
5422 | int tty_bytecount; |
5423 | ||
5424 | /* First, read a buffer full from the terminal */ | |
5425 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5426 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5427 | { |
5428 | perror ("readtty: read failed"); | |
5429 | return FATAL_ERROR; | |
5430 | } | |
5431 | ||
5432 | /* Remove a quoted newline. */ | |
5433 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5434 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5435 | { | |
c5aa993b JM |
5436 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5437 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5438 | } |
5439 | ||
5440 | /* Turn trailing newlines into returns */ | |
5441 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5442 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5443 | |
5444 | /* If the line consists of a ~, enter debugging mode. */ | |
5445 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5446 | return ENTER_DEBUG; | |
5447 | ||
5448 | /* Make this a zero terminated string and write it out */ | |
5449 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 5450 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5451 | { |
5452 | perror_with_name ("readtty: write failed"); | |
5453 | return FATAL_ERROR; | |
5454 | } | |
5455 | ||
5456 | return READ_MORE; | |
5457 | } | |
5458 | ||
5459 | static int | |
c2d11a7d | 5460 | minitelnet (void) |
0f71a2f6 JM |
5461 | { |
5462 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5463 | int tablesize; /* max number of FDs for select */ |
5464 | int status; | |
5465 | int quit_count = 0; | |
0f71a2f6 JM |
5466 | |
5467 | extern int escape_count; /* global shared by readsocket */ | |
5468 | extern int echo_check; /* ditto */ | |
5469 | ||
5470 | escape_count = 0; | |
c5aa993b | 5471 | echo_check = -1; |
0f71a2f6 JM |
5472 | |
5473 | tablesize = 8 * sizeof (input); | |
5474 | ||
c5aa993b | 5475 | for (;;) |
0f71a2f6 JM |
5476 | { |
5477 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5478 | this must be done *before* the select as there may be |
5479 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5480 | |
c5aa993b | 5481 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5482 | { |
5483 | error ("Debugging terminated by communications error"); | |
5484 | } | |
c5aa993b | 5485 | else if (status != READ_MORE) |
0f71a2f6 JM |
5486 | { |
5487 | return (status); | |
5488 | } | |
5489 | ||
c5aa993b | 5490 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5491 | |
5492 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5493 | |
0f71a2f6 | 5494 | FD_ZERO (&input); |
c5aa993b | 5495 | FD_SET (fileno (stdin), &input); |
c2c6d25f | 5496 | FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input); |
0f71a2f6 JM |
5497 | |
5498 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5499 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5500 | { |
5501 | error ("Communications error on select %d", errno); | |
5502 | } | |
5503 | ||
5504 | /* Handle Control-C typed */ | |
5505 | ||
c5aa993b | 5506 | if (quit_flag) |
0f71a2f6 JM |
5507 | { |
5508 | if ((++quit_count) == 2) | |
5509 | { | |
5510 | if (query ("Interrupt GDB? ")) | |
5511 | { | |
5512 | printf_filtered ("Interrupted by user.\n"); | |
5513 | return_to_top_level (RETURN_QUIT); | |
5514 | } | |
5515 | quit_count = 0; | |
5516 | } | |
5517 | quit_flag = 0; | |
5518 | ||
5519 | if (remote_break) | |
5520 | SERIAL_SEND_BREAK (remote_desc); | |
5521 | else | |
5522 | SERIAL_WRITE (remote_desc, "\003", 1); | |
5523 | ||
5524 | continue; | |
5525 | } | |
5526 | ||
5527 | /* Handle console input */ | |
5528 | ||
c5aa993b | 5529 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5530 | { |
5531 | quit_count = 0; | |
5532 | echo_check = 0; | |
5533 | status = readtty (); | |
5534 | if (status == READ_MORE) | |
5535 | continue; | |
5536 | ||
5537 | return status; /* telnet session ended */ | |
5538 | } | |
5539 | } | |
5540 | } | |
5541 | ||
39f77062 KB |
5542 | static ptid_t |
5543 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5544 | { |
c5aa993b | 5545 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5546 | { |
5547 | error ("Debugging session terminated by protocol error"); | |
5548 | } | |
5549 | putpkt ("?"); | |
39f77062 | 5550 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5551 | } |
5552 | ||
5553 | static void | |
fba45db2 | 5554 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5555 | { |
5556 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5557 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5558 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5559 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5560 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5561 | remote_cisco_ops.to_open = remote_cisco_open; |
5562 | remote_cisco_ops.to_close = remote_cisco_close; | |
5563 | remote_cisco_ops.to_detach = remote_detach; | |
5564 | remote_cisco_ops.to_resume = remote_resume; | |
5565 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5566 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5567 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5568 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5569 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5570 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5571 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5572 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5573 | remote_cisco_ops.to_kill = remote_kill; |
5574 | remote_cisco_ops.to_load = generic_load; | |
5575 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5576 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5577 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5578 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c5aa993b JM |
5579 | remote_cisco_ops.to_stratum = process_stratum; |
5580 | remote_cisco_ops.to_has_all_memory = 1; | |
5581 | remote_cisco_ops.to_has_memory = 1; | |
5582 | remote_cisco_ops.to_has_stack = 1; | |
5583 | remote_cisco_ops.to_has_registers = 1; | |
5584 | remote_cisco_ops.to_has_execution = 1; | |
5585 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5586 | } |
5587 | ||
6426a772 JM |
5588 | static int |
5589 | remote_can_async_p (void) | |
5590 | { | |
5591 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5592 | return (current_target.to_async_mask_value) && SERIAL_CAN_ASYNC_P (remote_desc); |
6426a772 JM |
5593 | } |
5594 | ||
5595 | static int | |
5596 | remote_is_async_p (void) | |
5597 | { | |
5598 | /* We're async whenever the serial device is. */ | |
ed9a39eb | 5599 | return (current_target.to_async_mask_value) && SERIAL_IS_ASYNC_P (remote_desc); |
6426a772 JM |
5600 | } |
5601 | ||
2acceee2 JM |
5602 | /* Pass the SERIAL event on and up to the client. One day this code |
5603 | will be able to delay notifying the client of an event until the | |
5604 | point where an entire packet has been received. */ | |
5605 | ||
5606 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5607 | static void *async_client_context; | |
5608 | static serial_event_ftype remote_async_serial_handler; | |
5609 | ||
6426a772 | 5610 | static void |
2acceee2 | 5611 | remote_async_serial_handler (serial_t scb, void *context) |
6426a772 | 5612 | { |
2acceee2 JM |
5613 | /* Don't propogate error information up to the client. Instead let |
5614 | the client find out about the error by querying the target. */ | |
5615 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5616 | } | |
5617 | ||
5618 | static void | |
5619 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5620 | { | |
ed9a39eb | 5621 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5622 | internal_error (__FILE__, __LINE__, |
5623 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5624 | |
2acceee2 JM |
5625 | if (callback != NULL) |
5626 | { | |
5627 | SERIAL_ASYNC (remote_desc, remote_async_serial_handler, NULL); | |
5628 | async_client_callback = callback; | |
5629 | async_client_context = context; | |
5630 | } | |
5631 | else | |
5632 | SERIAL_ASYNC (remote_desc, NULL, NULL); | |
6426a772 JM |
5633 | } |
5634 | ||
43ff13b4 JM |
5635 | /* Target async and target extended-async. |
5636 | ||
5637 | This are temporary targets, until it is all tested. Eventually | |
5638 | async support will be incorporated int the usual 'remote' | |
5639 | target. */ | |
5640 | ||
5641 | static void | |
c2d11a7d | 5642 | init_remote_async_ops (void) |
43ff13b4 JM |
5643 | { |
5644 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5645 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5646 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5647 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5648 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5649 | remote_async_ops.to_open = remote_async_open; |
5650 | remote_async_ops.to_close = remote_close; | |
5651 | remote_async_ops.to_detach = remote_async_detach; | |
5652 | remote_async_ops.to_resume = remote_async_resume; | |
5653 | remote_async_ops.to_wait = remote_async_wait; | |
5654 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5655 | remote_async_ops.to_store_registers = remote_store_registers; | |
5656 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5657 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5658 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5659 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5660 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5661 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5662 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5663 | remote_async_ops.to_kill = remote_async_kill; |
5664 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5665 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5666 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5667 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
9d1f7ab2 | 5668 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
43ff13b4 JM |
5669 | remote_async_ops.to_stop = remote_stop; |
5670 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5671 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5672 | remote_async_ops.to_stratum = process_stratum; |
5673 | remote_async_ops.to_has_all_memory = 1; | |
5674 | remote_async_ops.to_has_memory = 1; | |
5675 | remote_async_ops.to_has_stack = 1; | |
5676 | remote_async_ops.to_has_registers = 1; | |
5677 | remote_async_ops.to_has_execution = 1; | |
5678 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5679 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5680 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5681 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5682 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5683 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5684 | } |
5685 | ||
5686 | /* Set up the async extended remote vector by making a copy of the standard | |
5687 | remote vector and adding to it. */ | |
5688 | ||
5689 | static void | |
c2d11a7d | 5690 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5691 | { |
5692 | extended_async_remote_ops = remote_async_ops; | |
5693 | ||
5694 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5695 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5696 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5697 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5698 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5699 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5700 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5701 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5702 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5703 | } | |
5704 | ||
5a2468f5 | 5705 | static void |
c2d11a7d | 5706 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 JM |
5707 | { |
5708 | ||
5709 | } | |
5710 | ||
d471ea57 AC |
5711 | static void |
5712 | show_remote_cmd (char *args, int from_tty) | |
5713 | { | |
44eaed12 | 5714 | |
d471ea57 | 5715 | show_remote_protocol_Z_packet_cmd (args, from_tty); |
44eaed12 C |
5716 | show_remote_protocol_e_packet_cmd (args, from_tty); |
5717 | show_remote_protocol_E_packet_cmd (args, from_tty); | |
d471ea57 AC |
5718 | show_remote_protocol_P_packet_cmd (args, from_tty); |
5719 | show_remote_protocol_binary_download_cmd (args, from_tty); | |
5720 | } | |
5a2468f5 | 5721 | |
0f71a2f6 | 5722 | static void |
fba45db2 | 5723 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5724 | { |
11cf8741 JM |
5725 | build_remote_packet_sizes (); |
5726 | ||
5727 | /* Cisco stuff */ | |
0f71a2f6 | 5728 | tty_input = xmalloc (PBUFSIZ); |
d696208f | 5729 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5730 | } |
5731 | ||
c906108c | 5732 | void |
fba45db2 | 5733 | _initialize_remote (void) |
c906108c | 5734 | { |
5a2468f5 JM |
5735 | static struct cmd_list_element *remote_set_cmdlist; |
5736 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5737 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5738 | |
0f71a2f6 JM |
5739 | /* architecture specific data */ |
5740 | build_remote_gdbarch_data (); | |
5741 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5742 | register_remote_packet_sizes (); |
5743 | register_gdbarch_swap (&remote_address_size, | |
5744 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5745 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5746 | ||
c906108c SS |
5747 | init_remote_ops (); |
5748 | add_target (&remote_ops); | |
5749 | ||
5750 | init_extended_remote_ops (); | |
5751 | add_target (&extended_remote_ops); | |
cce74817 | 5752 | |
43ff13b4 JM |
5753 | init_remote_async_ops (); |
5754 | add_target (&remote_async_ops); | |
5755 | ||
5756 | init_extended_async_remote_ops (); | |
5757 | add_target (&extended_async_remote_ops); | |
5758 | ||
0f71a2f6 JM |
5759 | init_remote_cisco_ops (); |
5760 | add_target (&remote_cisco_ops); | |
5761 | ||
c906108c SS |
5762 | #if 0 |
5763 | init_remote_threadtests (); | |
5764 | #endif | |
5765 | ||
d471ea57 AC |
5766 | /* set/show remote ... */ |
5767 | ||
5a2468f5 JM |
5768 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5769 | Remote protocol specific variables\n\ | |
5770 | Configure various remote-protocol specific variables such as\n\ | |
5771 | the packets being used", | |
cff3e48b | 5772 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5773 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5774 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5775 | Remote protocol specific variables\n\ |
5776 | Configure various remote-protocol specific variables such as\n\ | |
5777 | the packets being used", | |
cff3e48b | 5778 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5779 | 0/*allow-unknown*/, &showlist); |
5780 | ||
c5aa993b | 5781 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5782 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5783 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5784 | &cmdlist); |
5785 | ||
5786 | add_cmd ("packet", class_maintenance, packet_command, | |
5787 | "Send an arbitrary packet to a remote target.\n\ | |
5788 | maintenance packet TEXT\n\ | |
5789 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5790 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5791 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5792 | terminating `#' character and checksum.", | |
5793 | &maintenancelist); | |
5794 | ||
c5aa993b | 5795 | add_show_from_set |
c906108c | 5796 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5797 | var_boolean, (char *) &remote_break, |
c906108c SS |
5798 | "Set whether to send break if interrupted.\n", |
5799 | &setlist), | |
5800 | &showlist); | |
5801 | ||
11cf8741 JM |
5802 | /* Install commands for configuring memory read/write packets. */ |
5803 | ||
5804 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5805 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5806 | &setlist); | |
4ad5b0f7 | 5807 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5808 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5809 | &showlist); | |
5810 | add_cmd ("memory-write-packet-size", no_class, | |
5811 | set_memory_write_packet_size, | |
5812 | "Set the maximum number of bytes per memory-write packet.\n" | |
5813 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5814 | "default packet size. The actual limit is further reduced\n" | |
5815 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5816 | "further restriction and ``limit'' to enable that restriction\n", | |
5817 | &remote_set_cmdlist); | |
5818 | add_cmd ("memory-read-packet-size", no_class, | |
5819 | set_memory_read_packet_size, | |
5820 | "Set the maximum number of bytes per memory-read packet.\n" | |
5821 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5822 | "default packet size. The actual limit is further reduced\n" | |
5823 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5824 | "further restriction and ``limit'' to enable that restriction\n", | |
5825 | &remote_set_cmdlist); | |
5826 | add_cmd ("memory-write-packet-size", no_class, | |
5827 | show_memory_write_packet_size, | |
5828 | "Show the maximum number of bytes per memory-write packet.\n", | |
5829 | &remote_show_cmdlist); | |
5830 | add_cmd ("memory-read-packet-size", no_class, | |
5831 | show_memory_read_packet_size, | |
5832 | "Show the maximum number of bytes per memory-read packet.\n", | |
5833 | &remote_show_cmdlist); | |
c906108c | 5834 | |
c5aa993b | 5835 | add_show_from_set |
c906108c | 5836 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5837 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5838 | "Set the maximum size of the address (in bits) \ |
5839 | in a memory packet.\n", | |
5840 | &setlist), | |
c5aa993b | 5841 | &showlist); |
c906108c | 5842 | |
96baa820 JM |
5843 | add_packet_config_cmd (&remote_protocol_binary_download, |
5844 | "X", "binary-download", | |
5845 | set_remote_protocol_binary_download_cmd, | |
5846 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5847 | &remote_set_cmdlist, &remote_show_cmdlist, |
5848 | 1); | |
96baa820 JM |
5849 | #if 0 |
5850 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
5851 | compatibility. */ | |
c5aa993b | 5852 | add_show_from_set |
b83266a0 SS |
5853 | (add_set_cmd ("remotebinarydownload", no_class, |
5854 | var_boolean, (char *) &remote_binary_download, | |
5855 | "Set binary downloads.\n", &setlist), | |
5856 | &showlist); | |
96baa820 | 5857 | #endif |
0f71a2f6 JM |
5858 | |
5859 | add_info ("remote-process", remote_info_process, | |
5860 | "Query the remote system for process info."); | |
5861 | ||
44eaed12 C |
5862 | add_packet_config_cmd (&remote_protocol_e, |
5863 | "e", "step-over-range", | |
5864 | set_remote_protocol_e_packet_cmd, | |
5865 | show_remote_protocol_e_packet_cmd, | |
5866 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5867 | 0); | |
5868 | ||
5869 | add_packet_config_cmd (&remote_protocol_E, | |
5870 | "E", "step-over-range-w-signal", | |
5871 | set_remote_protocol_E_packet_cmd, | |
5872 | show_remote_protocol_E_packet_cmd, | |
5873 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5874 | 0); | |
5875 | ||
d471ea57 AC |
5876 | add_packet_config_cmd (&remote_protocol_P, |
5877 | "P", "set-register", | |
5a2468f5 JM |
5878 | set_remote_protocol_P_packet_cmd, |
5879 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
5880 | &remote_set_cmdlist, &remote_show_cmdlist, |
5881 | 1); | |
5882 | ||
5883 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
5884 | "Z0", "software-breakpoint", | |
5885 | set_remote_protocol_Z_software_bp_packet_cmd, | |
5886 | show_remote_protocol_Z_software_bp_packet_cmd, | |
5887 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5888 | 0); | |
5889 | ||
5890 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
5891 | "Z1", "hardware-breakpoint", | |
5892 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
5893 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
5894 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5895 | 0); | |
5896 | ||
5897 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
5898 | "Z2", "write-watchpoint", | |
5899 | set_remote_protocol_Z_write_wp_packet_cmd, | |
5900 | show_remote_protocol_Z_write_wp_packet_cmd, | |
5901 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5902 | 0); | |
5903 | ||
5904 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
5905 | "Z3", "read-watchpoint", | |
5906 | set_remote_protocol_Z_read_wp_packet_cmd, | |
5907 | show_remote_protocol_Z_read_wp_packet_cmd, | |
5908 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5909 | 0); | |
5910 | ||
5911 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
5912 | "Z4", "access-watchpoint", | |
5913 | set_remote_protocol_Z_access_wp_packet_cmd, | |
5914 | show_remote_protocol_Z_access_wp_packet_cmd, | |
5915 | &remote_set_cmdlist, &remote_show_cmdlist, | |
5916 | 0); | |
5917 | ||
5918 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
5919 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
5920 | &remote_Z_packet_detect, | |
5921 | "\ | |
5922 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
5923 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
5924 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
5925 | "Show use of remote protocol `Z' packets ", | |
5926 | &remote_show_cmdlist); | |
c906108c | 5927 | } |