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" |
fd0407d6 | 39 | #include "value.h" |
1ff9c3d6 | 40 | #include "gdb_assert.h" |
c906108c | 41 | |
7a292a7a | 42 | #include <ctype.h> |
9846de1b | 43 | #include <sys/time.h> |
c906108c SS |
44 | #ifdef USG |
45 | #include <sys/types.h> | |
46 | #endif | |
47 | ||
43ff13b4 | 48 | #include "event-loop.h" |
c2c6d25f | 49 | #include "event-top.h" |
2acceee2 | 50 | #include "inf-loop.h" |
43ff13b4 | 51 | |
c906108c SS |
52 | #include <signal.h> |
53 | #include "serial.h" | |
54 | ||
6240bebf MS |
55 | #include "gdbcore.h" /* for exec_bfd */ |
56 | ||
c906108c | 57 | /* Prototypes for local functions */ |
6426a772 JM |
58 | static void cleanup_sigint_signal_handler (void *dummy); |
59 | static void initialize_sigint_signal_handler (void); | |
d9fcf2fb | 60 | static int getpkt_sane (char *buf, long sizeof_buf, int forever); |
6426a772 | 61 | |
a14ed312 KB |
62 | static void handle_remote_sigint (int); |
63 | static void handle_remote_sigint_twice (int); | |
64 | static void async_remote_interrupt (gdb_client_data); | |
65 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 66 | |
a14ed312 | 67 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 68 | |
917317f4 | 69 | static int remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 70 | |
a14ed312 | 71 | static int remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 72 | |
a14ed312 | 73 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 74 | |
a14ed312 KB |
75 | static int remote_xfer_memory (CORE_ADDR memaddr, char *myaddr, |
76 | int len, int should_write, | |
29e57380 | 77 | struct mem_attrib *attrib, |
a14ed312 | 78 | struct target_ops *target); |
c906108c | 79 | |
a14ed312 | 80 | static void remote_prepare_to_store (void); |
c906108c | 81 | |
a14ed312 | 82 | static void remote_fetch_registers (int regno); |
c906108c | 83 | |
39f77062 KB |
84 | static void remote_resume (ptid_t ptid, int step, |
85 | enum target_signal siggnal); | |
86 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 KB |
87 | enum target_signal siggnal); |
88 | static int remote_start_remote (PTR); | |
c906108c | 89 | |
a14ed312 KB |
90 | static void remote_open (char *name, int from_tty); |
91 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 92 | |
a14ed312 KB |
93 | static void extended_remote_open (char *name, int from_tty); |
94 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 95 | |
a14ed312 KB |
96 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
97 | static void remote_async_open_1 (char *, int, struct target_ops *, | |
98 | int extended_p); | |
c906108c | 99 | |
a14ed312 | 100 | static void remote_close (int quitting); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_store_registers (int regno); |
c906108c | 103 | |
a14ed312 KB |
104 | static void remote_mourn (void); |
105 | static void remote_async_mourn (void); | |
c906108c | 106 | |
a14ed312 | 107 | static void extended_remote_restart (void); |
c906108c | 108 | |
a14ed312 | 109 | static void extended_remote_mourn (void); |
c906108c | 110 | |
a14ed312 KB |
111 | static void extended_remote_create_inferior (char *, char *, char **); |
112 | static void extended_remote_async_create_inferior (char *, char *, char **); | |
c906108c | 113 | |
a14ed312 | 114 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 115 | |
c2d11a7d | 116 | static void remote_send (char *buf, long sizeof_buf); |
c906108c | 117 | |
a14ed312 | 118 | static int readchar (int timeout); |
c906108c | 119 | |
39f77062 KB |
120 | static ptid_t remote_wait (ptid_t ptid, |
121 | struct target_waitstatus *status); | |
122 | static ptid_t remote_async_wait (ptid_t ptid, | |
123 | struct target_waitstatus *status); | |
c906108c | 124 | |
a14ed312 KB |
125 | static void remote_kill (void); |
126 | static void remote_async_kill (void); | |
c906108c | 127 | |
a14ed312 | 128 | static int tohex (int nib); |
c906108c | 129 | |
a14ed312 KB |
130 | static void remote_detach (char *args, int from_tty); |
131 | static void remote_async_detach (char *args, int from_tty); | |
c906108c | 132 | |
a14ed312 | 133 | static void remote_interrupt (int signo); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt_twice (int signo); |
7a292a7a | 136 | |
a14ed312 | 137 | static void interrupt_query (void); |
c906108c | 138 | |
a14ed312 | 139 | static void set_thread (int, int); |
c906108c | 140 | |
39f77062 | 141 | static int remote_thread_alive (ptid_t); |
c906108c | 142 | |
a14ed312 | 143 | static void get_offsets (void); |
c906108c | 144 | |
c2d11a7d | 145 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 146 | |
a14ed312 | 147 | static int remote_insert_breakpoint (CORE_ADDR, char *); |
c906108c | 148 | |
a14ed312 | 149 | static int remote_remove_breakpoint (CORE_ADDR, char *); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_remote_cisco_ops (void); |
0f71a2f6 JM |
158 | |
159 | static struct target_ops remote_cisco_ops; | |
160 | ||
a14ed312 | 161 | static void remote_stop (void); |
c906108c | 162 | |
a14ed312 | 163 | static int ishex (int ch, int *val); |
c906108c | 164 | |
a14ed312 | 165 | static int stubhex (int ch); |
c906108c | 166 | |
a14ed312 | 167 | static int remote_query (int /*char */ , char *, char *, int *); |
c906108c | 168 | |
a14ed312 | 169 | static int hexnumstr (char *, ULONGEST); |
c906108c | 170 | |
a14ed312 | 171 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 172 | |
a14ed312 | 173 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 174 | |
a14ed312 | 175 | static void print_packet (char *); |
c906108c | 176 | |
a14ed312 | 177 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 178 | |
a14ed312 | 179 | static void compare_sections_command (char *, int); |
c906108c | 180 | |
a14ed312 | 181 | static void packet_command (char *, int); |
c906108c | 182 | |
a14ed312 | 183 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 184 | |
39f77062 | 185 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 186 | |
a14ed312 | 187 | static void remote_find_new_threads (void); |
c906108c | 188 | |
a14ed312 | 189 | static void record_currthread (int currthread); |
c906108c | 190 | |
30559e10 | 191 | static int fromhex (int a); |
c906108c | 192 | |
dc8acb97 | 193 | static int hex2bin (const char *hex, char *bin, int count); |
c906108c | 194 | |
dc8acb97 | 195 | static int bin2hex (const char *bin, char *hex, int count); |
234fa6d1 | 196 | |
a14ed312 | 197 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 198 | |
a14ed312 | 199 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 200 | |
5a2468f5 | 201 | struct packet_config; |
5a2468f5 | 202 | |
a14ed312 | 203 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 204 | |
d471ea57 | 205 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 206 | |
c906108c SS |
207 | /* Define the target subroutine names */ |
208 | ||
a14ed312 | 209 | void open_remote_target (char *, int, struct target_ops *, int); |
c906108c | 210 | |
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
d01949b6 AC |
213 | /* Description of the remote protocol. Strictly speeking, when the |
214 | target is open()ed, remote.c should create a per-target description | |
215 | of the remote protocol using that target's architecture. | |
216 | Unfortunatly, the target stack doesn't include local state. For | |
217 | the moment keep the information in the target's architecture | |
218 | object. Sigh.. */ | |
219 | ||
220 | struct remote_state | |
221 | { | |
222 | /* This is the size (in chars) of the first response to the ``g'' | |
223 | packet. It is used as a heuristic when determining the maximum | |
224 | size of memory-read and memory-write packets. A target will | |
225 | typically only reserve a buffer large enough to hold the ``g'' | |
226 | packet. The size does not include packet overhead (headers and | |
227 | trailers). */ | |
228 | long actual_register_packet_size; | |
229 | ||
230 | /* This is the maximum size (in chars) of a non read/write packet. | |
231 | It is also used as a cap on the size of read/write packets. */ | |
232 | long remote_packet_size; | |
233 | }; | |
234 | ||
235 | /* Handle for retreving the remote protocol data from gdbarch. */ | |
236 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
237 | ||
238 | static struct remote_state * | |
239 | get_remote_state () | |
240 | { | |
241 | return gdbarch_data (remote_gdbarch_data_handle); | |
242 | } | |
243 | ||
244 | static void * | |
245 | init_remote_state (struct gdbarch *gdbarch) | |
246 | { | |
247 | int regnum; | |
248 | struct remote_state *rs = xmalloc (sizeof (struct remote_state)); | |
249 | ||
250 | /* Default maximum number of characters in a packet body. Many | |
251 | remote stubs have a hardwired buffer size of 400 bytes | |
252 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
253 | as the maximum packet-size to ensure that the packet and an extra | |
254 | NUL character can always fit in the buffer. This stops GDB | |
255 | trashing stubs that try to squeeze an extra NUL into what is | |
256 | already a full buffer (As of 1999-12-04 that was most stubs. */ | |
257 | rs->remote_packet_size = 400 - 1; | |
258 | ||
259 | /* Should REGISTER_BYTES needs more space than the default, adjust | |
260 | the size accordingly. Remember that each byte is encoded as two | |
261 | characters. 32 is the overhead for the packet header / | |
262 | footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
263 | (``$NN:G...#NN'') is a better guess, the below has been padded a | |
264 | little. */ | |
265 | if (REGISTER_BYTES > ((rs->remote_packet_size - 32) / 2)) | |
266 | rs->remote_packet_size = (REGISTER_BYTES * 2 + 32); | |
267 | ||
268 | /* This one is filled in when a ``g'' packet is received. */ | |
269 | rs->actual_register_packet_size = 0; | |
270 | ||
271 | return rs; | |
272 | } | |
273 | ||
274 | static void | |
275 | free_remote_state (struct gdbarch *gdbarch, void *pointer) | |
276 | { | |
277 | struct remote_state *state = pointer; | |
278 | xfree (state); | |
279 | } | |
280 | ||
c906108c SS |
281 | /* */ |
282 | ||
283 | static struct target_ops remote_ops; | |
284 | ||
285 | static struct target_ops extended_remote_ops; | |
286 | ||
43ff13b4 JM |
287 | /* Temporary target ops. Just like the remote_ops and |
288 | extended_remote_ops, but with asynchronous support. */ | |
289 | static struct target_ops remote_async_ops; | |
290 | ||
291 | static struct target_ops extended_async_remote_ops; | |
292 | ||
6426a772 JM |
293 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
294 | ``forever'' still use the normal timeout mechanism. This is | |
295 | currently used by the ASYNC code to guarentee that target reads | |
296 | during the initial connect always time-out. Once getpkt has been | |
297 | modified to return a timeout indication and, in turn | |
298 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
299 | this can go away. */ | |
300 | static int wait_forever_enabled_p = 1; | |
301 | ||
302 | ||
c906108c SS |
303 | /* This variable chooses whether to send a ^C or a break when the user |
304 | requests program interruption. Although ^C is usually what remote | |
305 | systems expect, and that is the default here, sometimes a break is | |
306 | preferable instead. */ | |
307 | ||
308 | static int remote_break; | |
309 | ||
c906108c SS |
310 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
311 | remote_open knows that we don't have a file open when the program | |
312 | starts. */ | |
819cc324 | 313 | static struct serial *remote_desc = NULL; |
c906108c | 314 | |
0f71a2f6 JM |
315 | /* This is set by the target (thru the 'S' message) |
316 | to denote that the target is in kernel mode. */ | |
317 | static int cisco_kernel_mode = 0; | |
318 | ||
c906108c SS |
319 | /* This variable sets the number of bits in an address that are to be |
320 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
321 | leading zeros, the entire address would be sent. This variable | |
322 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
323 | initial implementation of remote.c restricted the address sent in | |
324 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
325 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
326 | address was never sent. Since fixing this bug may cause a break in | |
327 | some remote targets this variable is principly provided to | |
328 | facilitate backward compatibility. */ | |
329 | ||
330 | static int remote_address_size; | |
331 | ||
6426a772 JM |
332 | /* Tempoary to track who currently owns the terminal. See |
333 | target_async_terminal_* for more details. */ | |
334 | ||
335 | static int remote_async_terminal_ours_p; | |
336 | ||
11cf8741 | 337 | \f |
11cf8741 | 338 | /* User configurable variables for the number of characters in a |
d01949b6 | 339 | memory read/write packet. MIN ((rs->remote_packet_size), g-packet-size) is the |
11cf8741 JM |
340 | default. Some targets need smaller values (fifo overruns, et.al.) |
341 | and some users need larger values (speed up transfers). The | |
342 | variables ``preferred_*'' (the user request), ``current_*'' (what | |
343 | was actually set) and ``forced_*'' (Positive - a soft limit, | |
344 | negative - a hard limit). */ | |
345 | ||
346 | struct memory_packet_config | |
347 | { | |
348 | char *name; | |
349 | long size; | |
350 | int fixed_p; | |
351 | }; | |
352 | ||
353 | /* Compute the current size of a read/write packet. Since this makes | |
354 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
355 | ||
356 | static long | |
357 | get_memory_packet_size (struct memory_packet_config *config) | |
358 | { | |
d01949b6 | 359 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
360 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
361 | law?) that some hosts don't cope very well with large alloca() | |
362 | calls. Eventually the alloca() code will be replaced by calls to | |
363 | xmalloc() and make_cleanups() allowing this restriction to either | |
364 | be lifted or removed. */ | |
365 | #ifndef MAX_REMOTE_PACKET_SIZE | |
366 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
367 | #endif | |
368 | /* NOTE: 16 is just chosen at random. */ | |
369 | #ifndef MIN_REMOTE_PACKET_SIZE | |
370 | #define MIN_REMOTE_PACKET_SIZE 16 | |
371 | #endif | |
372 | long what_they_get; | |
373 | if (config->fixed_p) | |
374 | { | |
375 | if (config->size <= 0) | |
376 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
377 | else | |
378 | what_they_get = config->size; | |
379 | } | |
380 | else | |
381 | { | |
d01949b6 | 382 | what_they_get = (rs->remote_packet_size); |
11cf8741 JM |
383 | /* Limit the packet to the size specified by the user. */ |
384 | if (config->size > 0 | |
385 | && what_they_get > config->size) | |
386 | what_they_get = config->size; | |
387 | /* Limit it to the size of the targets ``g'' response. */ | |
d01949b6 AC |
388 | if ((rs->actual_register_packet_size) > 0 |
389 | && what_they_get > (rs->actual_register_packet_size)) | |
390 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
391 | } |
392 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
393 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
394 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
395 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
396 | return what_they_get; | |
397 | } | |
398 | ||
399 | /* Update the size of a read/write packet. If they user wants | |
400 | something really big then do a sanity check. */ | |
401 | ||
402 | static void | |
403 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
404 | { | |
405 | int fixed_p = config->fixed_p; | |
406 | long size = config->size; | |
407 | if (args == NULL) | |
408 | error ("Argument required (integer, `fixed' or `limited')."); | |
409 | else if (strcmp (args, "hard") == 0 | |
410 | || strcmp (args, "fixed") == 0) | |
411 | fixed_p = 1; | |
412 | else if (strcmp (args, "soft") == 0 | |
413 | || strcmp (args, "limit") == 0) | |
414 | fixed_p = 0; | |
415 | else | |
416 | { | |
417 | char *end; | |
418 | size = strtoul (args, &end, 0); | |
419 | if (args == end) | |
420 | error ("Invalid %s (bad syntax).", config->name); | |
421 | #if 0 | |
422 | /* Instead of explicitly capping the size of a packet to | |
423 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
424 | instead allowed to set the size to something arbitrarily | |
425 | large. */ | |
426 | if (size > MAX_REMOTE_PACKET_SIZE) | |
427 | error ("Invalid %s (too large).", config->name); | |
428 | #endif | |
429 | } | |
430 | /* Extra checks? */ | |
431 | if (fixed_p && !config->fixed_p) | |
432 | { | |
433 | if (! query ("The target may not be able to correctly handle a %s\n" | |
434 | "of %ld bytes. Change the packet size? ", | |
435 | config->name, size)) | |
436 | error ("Packet size not changed."); | |
437 | } | |
438 | /* Update the config. */ | |
439 | config->fixed_p = fixed_p; | |
440 | config->size = size; | |
441 | } | |
442 | ||
443 | static void | |
444 | show_memory_packet_size (struct memory_packet_config *config) | |
445 | { | |
446 | printf_filtered ("The %s is %ld. ", config->name, config->size); | |
447 | if (config->fixed_p) | |
448 | printf_filtered ("Packets are fixed at %ld bytes.\n", | |
449 | get_memory_packet_size (config)); | |
450 | else | |
451 | printf_filtered ("Packets are limited to %ld bytes.\n", | |
452 | get_memory_packet_size (config)); | |
453 | } | |
454 | ||
455 | static struct memory_packet_config memory_write_packet_config = | |
456 | { | |
457 | "memory-write-packet-size", | |
458 | }; | |
459 | ||
460 | static void | |
461 | set_memory_write_packet_size (char *args, int from_tty) | |
462 | { | |
463 | set_memory_packet_size (args, &memory_write_packet_config); | |
464 | } | |
465 | ||
466 | static void | |
467 | show_memory_write_packet_size (char *args, int from_tty) | |
468 | { | |
469 | show_memory_packet_size (&memory_write_packet_config); | |
470 | } | |
471 | ||
472 | static long | |
473 | get_memory_write_packet_size (void) | |
474 | { | |
475 | return get_memory_packet_size (&memory_write_packet_config); | |
476 | } | |
477 | ||
478 | static struct memory_packet_config memory_read_packet_config = | |
479 | { | |
480 | "memory-read-packet-size", | |
481 | }; | |
482 | ||
483 | static void | |
484 | set_memory_read_packet_size (char *args, int from_tty) | |
485 | { | |
486 | set_memory_packet_size (args, &memory_read_packet_config); | |
487 | } | |
488 | ||
489 | static void | |
490 | show_memory_read_packet_size (char *args, int from_tty) | |
491 | { | |
492 | show_memory_packet_size (&memory_read_packet_config); | |
493 | } | |
494 | ||
495 | static long | |
496 | get_memory_read_packet_size (void) | |
497 | { | |
d01949b6 | 498 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
499 | long size = get_memory_packet_size (&memory_read_packet_config); |
500 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
501 | extra buffer size argument before the memory read size can be | |
d01949b6 AC |
502 | increased beyond (rs->remote_packet_size). */ |
503 | if (size > (rs->remote_packet_size)) | |
504 | size = (rs->remote_packet_size); | |
11cf8741 JM |
505 | return size; |
506 | } | |
507 | ||
11cf8741 | 508 | \f |
5a2468f5 JM |
509 | /* Generic configuration support for packets the stub optionally |
510 | supports. Allows the user to specify the use of the packet as well | |
511 | as allowing GDB to auto-detect support in the remote stub. */ | |
512 | ||
513 | enum packet_support | |
514 | { | |
515 | PACKET_SUPPORT_UNKNOWN = 0, | |
516 | PACKET_ENABLE, | |
517 | PACKET_DISABLE | |
518 | }; | |
519 | ||
5a2468f5 JM |
520 | struct packet_config |
521 | { | |
5a2468f5 JM |
522 | char *name; |
523 | char *title; | |
8e248173 | 524 | enum cmd_auto_boolean detect; |
5a2468f5 JM |
525 | enum packet_support support; |
526 | }; | |
527 | ||
d471ea57 AC |
528 | /* Analyze a packet's return value and update the packet config |
529 | accordingly. */ | |
530 | ||
531 | enum packet_result | |
532 | { | |
533 | PACKET_ERROR, | |
534 | PACKET_OK, | |
535 | PACKET_UNKNOWN | |
536 | }; | |
537 | ||
5a2468f5 | 538 | static void |
d471ea57 | 539 | update_packet_config (struct packet_config *config) |
5a2468f5 | 540 | { |
d471ea57 AC |
541 | switch (config->detect) |
542 | { | |
543 | case CMD_AUTO_BOOLEAN_TRUE: | |
544 | config->support = PACKET_ENABLE; | |
545 | break; | |
546 | case CMD_AUTO_BOOLEAN_FALSE: | |
547 | config->support = PACKET_DISABLE; | |
548 | break; | |
549 | case CMD_AUTO_BOOLEAN_AUTO: | |
550 | config->support = PACKET_SUPPORT_UNKNOWN; | |
551 | break; | |
552 | } | |
5a2468f5 JM |
553 | } |
554 | ||
555 | static void | |
fba45db2 | 556 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
557 | { |
558 | char *support = "internal-error"; | |
559 | switch (config->support) | |
560 | { | |
561 | case PACKET_ENABLE: | |
562 | support = "enabled"; | |
563 | break; | |
564 | case PACKET_DISABLE: | |
565 | support = "disabled"; | |
566 | break; | |
567 | case PACKET_SUPPORT_UNKNOWN: | |
568 | support = "unknown"; | |
569 | break; | |
570 | } | |
571 | switch (config->detect) | |
572 | { | |
8e248173 | 573 | case CMD_AUTO_BOOLEAN_AUTO: |
5a2468f5 JM |
574 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", |
575 | config->name, config->title, support); | |
576 | break; | |
8e248173 AC |
577 | case CMD_AUTO_BOOLEAN_TRUE: |
578 | case CMD_AUTO_BOOLEAN_FALSE: | |
579 | printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n", | |
5a2468f5 | 580 | config->name, config->title, support); |
8e248173 | 581 | break; |
5a2468f5 JM |
582 | } |
583 | } | |
584 | ||
585 | static void | |
d471ea57 AC |
586 | add_packet_config_cmd (struct packet_config *config, |
587 | char *name, | |
588 | char *title, | |
589 | void (*set_func) (char *args, int from_tty, | |
590 | struct cmd_list_element * | |
591 | c), | |
592 | void (*show_func) (char *name, | |
593 | int from_tty), | |
594 | struct cmd_list_element **set_remote_list, | |
595 | struct cmd_list_element **show_remote_list, | |
596 | int legacy) | |
597 | { | |
598 | struct cmd_list_element *set_cmd; | |
599 | struct cmd_list_element *show_cmd; | |
5a2468f5 JM |
600 | char *set_doc; |
601 | char *show_doc; | |
d471ea57 | 602 | char *cmd_name; |
5a2468f5 JM |
603 | config->name = name; |
604 | config->title = title; | |
8e248173 AC |
605 | config->detect = CMD_AUTO_BOOLEAN_AUTO; |
606 | config->support = PACKET_SUPPORT_UNKNOWN; | |
76995688 AC |
607 | xasprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", |
608 | name, title); | |
609 | xasprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
610 | name, title); | |
d471ea57 | 611 | /* set/show TITLE-packet {auto,on,off} */ |
76995688 | 612 | xasprintf (&cmd_name, "%s-packet", title); |
d471ea57 AC |
613 | set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure, |
614 | &config->detect, set_doc, | |
615 | set_remote_list); | |
616 | set_cmd->function.sfunc = set_func; | |
617 | show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc, | |
618 | show_remote_list); | |
619 | /* set/show remote NAME-packet {auto,on,off} -- legacy */ | |
620 | if (legacy) | |
621 | { | |
622 | char *legacy_name; | |
76995688 | 623 | xasprintf (&legacy_name, "%s-packet", name); |
d471ea57 AC |
624 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
625 | set_remote_list); | |
626 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
627 | show_remote_list); | |
628 | } | |
5a2468f5 JM |
629 | } |
630 | ||
d471ea57 AC |
631 | static enum packet_result |
632 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 633 | { |
d471ea57 | 634 | if (buf[0] != '\0') |
5a2468f5 | 635 | { |
d471ea57 AC |
636 | /* The stub recognized the packet request. Check that the |
637 | operation succeeded. */ | |
638 | switch (config->support) | |
639 | { | |
640 | case PACKET_SUPPORT_UNKNOWN: | |
641 | if (remote_debug) | |
642 | fprintf_unfiltered (gdb_stdlog, | |
643 | "Packet %s (%s) is supported\n", | |
644 | config->name, config->title); | |
645 | config->support = PACKET_ENABLE; | |
646 | break; | |
647 | case PACKET_DISABLE: | |
8e65ff28 AC |
648 | internal_error (__FILE__, __LINE__, |
649 | "packet_ok: attempt to use a disabled packet"); | |
d471ea57 AC |
650 | break; |
651 | case PACKET_ENABLE: | |
652 | break; | |
653 | } | |
654 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
655 | /* "OK" - definitly OK. */ | |
656 | return PACKET_OK; | |
657 | if (buf[0] == 'E' | |
658 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
659 | && buf[3] == '\0') | |
660 | /* "Enn" - definitly an error. */ | |
661 | return PACKET_ERROR; | |
662 | /* The packet may or may not be OK. Just assume it is */ | |
663 | return PACKET_OK; | |
664 | } | |
665 | else | |
666 | { | |
667 | /* The stub does not support the packet. */ | |
668 | switch (config->support) | |
669 | { | |
670 | case PACKET_ENABLE: | |
671 | if (config->detect == CMD_AUTO_BOOLEAN_AUTO) | |
672 | /* If the stub previously indicated that the packet was | |
673 | supported then there is a protocol error.. */ | |
674 | error ("Protocol error: %s (%s) conflicting enabled responses.", | |
675 | config->name, config->title); | |
676 | else | |
677 | /* The user set it wrong. */ | |
678 | error ("Enabled packet %s (%s) not recognized by stub", | |
679 | config->name, config->title); | |
680 | break; | |
681 | case PACKET_SUPPORT_UNKNOWN: | |
682 | if (remote_debug) | |
683 | fprintf_unfiltered (gdb_stdlog, | |
684 | "Packet %s (%s) is NOT supported\n", | |
685 | config->name, config->title); | |
686 | config->support = PACKET_DISABLE; | |
687 | break; | |
688 | case PACKET_DISABLE: | |
689 | break; | |
690 | } | |
691 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
692 | } |
693 | } | |
694 | ||
dc8acb97 MS |
695 | /* Should we try the 'qSymbol' (target symbol lookup service) request? */ |
696 | static struct packet_config remote_protocol_qSymbol; | |
697 | ||
698 | static void | |
699 | set_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty, | |
700 | struct cmd_list_element *c) | |
701 | { | |
702 | update_packet_config (&remote_protocol_qSymbol); | |
703 | } | |
704 | ||
705 | static void | |
706 | show_remote_protocol_qSymbol_packet_cmd (char *args, int from_tty) | |
707 | { | |
708 | show_packet_config_cmd (&remote_protocol_qSymbol); | |
709 | } | |
710 | ||
44eaed12 C |
711 | /* Should we try the 'e' (step over range) request? */ |
712 | static struct packet_config remote_protocol_e; | |
713 | ||
714 | static void | |
715 | set_remote_protocol_e_packet_cmd (char *args, int from_tty, | |
716 | struct cmd_list_element *c) | |
717 | { | |
718 | update_packet_config (&remote_protocol_e); | |
719 | } | |
720 | ||
721 | static void | |
722 | show_remote_protocol_e_packet_cmd (char *args, int from_tty) | |
723 | { | |
724 | show_packet_config_cmd (&remote_protocol_e); | |
725 | } | |
726 | ||
727 | ||
728 | /* Should we try the 'E' (step over range / w signal #) request? */ | |
729 | static struct packet_config remote_protocol_E; | |
730 | ||
731 | static void | |
732 | set_remote_protocol_E_packet_cmd (char *args, int from_tty, | |
733 | struct cmd_list_element *c) | |
734 | { | |
735 | update_packet_config (&remote_protocol_E); | |
736 | } | |
737 | ||
738 | static void | |
739 | show_remote_protocol_E_packet_cmd (char *args, int from_tty) | |
740 | { | |
741 | show_packet_config_cmd (&remote_protocol_E); | |
742 | } | |
743 | ||
744 | ||
5a2468f5 JM |
745 | /* Should we try the 'P' (set register) request? */ |
746 | ||
747 | static struct packet_config remote_protocol_P; | |
748 | ||
749 | static void | |
fba45db2 KB |
750 | set_remote_protocol_P_packet_cmd (char *args, int from_tty, |
751 | struct cmd_list_element *c) | |
5a2468f5 | 752 | { |
d471ea57 | 753 | update_packet_config (&remote_protocol_P); |
5a2468f5 JM |
754 | } |
755 | ||
756 | static void | |
fba45db2 | 757 | show_remote_protocol_P_packet_cmd (char *args, int from_tty) |
5a2468f5 JM |
758 | { |
759 | show_packet_config_cmd (&remote_protocol_P); | |
760 | } | |
761 | ||
d471ea57 AC |
762 | /* Should we try one of the 'Z' requests? */ |
763 | ||
764 | enum Z_packet_type | |
765 | { | |
766 | Z_PACKET_SOFTWARE_BP, | |
767 | Z_PACKET_HARDWARE_BP, | |
768 | Z_PACKET_WRITE_WP, | |
769 | Z_PACKET_READ_WP, | |
770 | Z_PACKET_ACCESS_WP, | |
771 | NR_Z_PACKET_TYPES | |
772 | }; | |
96baa820 | 773 | |
d471ea57 AC |
774 | static struct packet_config remote_protocol_Z[NR_Z_PACKET_TYPES]; |
775 | ||
776 | /* FIXME: Instead of having all these boiler plate functions, the | |
777 | command callback should include a context argument. */ | |
778 | ||
779 | static void | |
780 | set_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty, | |
781 | struct cmd_list_element *c) | |
782 | { | |
783 | update_packet_config (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
784 | } | |
785 | ||
786 | static void | |
787 | show_remote_protocol_Z_software_bp_packet_cmd (char *args, int from_tty) | |
788 | { | |
789 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP]); | |
790 | } | |
791 | ||
792 | static void | |
793 | set_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty, | |
794 | struct cmd_list_element *c) | |
795 | { | |
796 | update_packet_config (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
797 | } | |
798 | ||
799 | static void | |
800 | show_remote_protocol_Z_hardware_bp_packet_cmd (char *args, int from_tty) | |
801 | { | |
802 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP]); | |
803 | } | |
804 | ||
805 | static void | |
806 | set_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty, | |
807 | struct cmd_list_element *c) | |
808 | { | |
809 | update_packet_config (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
810 | } | |
811 | ||
812 | static void | |
813 | show_remote_protocol_Z_write_wp_packet_cmd (char *args, int from_tty) | |
814 | { | |
815 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP]); | |
816 | } | |
817 | ||
818 | static void | |
819 | set_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty, | |
820 | struct cmd_list_element *c) | |
821 | { | |
822 | update_packet_config (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
823 | } | |
824 | ||
825 | static void | |
826 | show_remote_protocol_Z_read_wp_packet_cmd (char *args, int from_tty) | |
827 | { | |
828 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP]); | |
829 | } | |
830 | ||
831 | static void | |
832 | set_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty, | |
833 | struct cmd_list_element *c) | |
834 | { | |
835 | update_packet_config (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
836 | } | |
837 | ||
838 | static void | |
839 | show_remote_protocol_Z_access_wp_packet_cmd (char *args, int from_tty) | |
840 | { | |
841 | show_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP]); | |
842 | } | |
843 | ||
844 | /* For compatibility with older distributions. Provide a ``set remote | |
845 | Z-packet ...'' command that updates all the Z packet types. */ | |
846 | ||
847 | static enum cmd_auto_boolean remote_Z_packet_detect; | |
96baa820 JM |
848 | |
849 | static void | |
fba45db2 KB |
850 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
851 | struct cmd_list_element *c) | |
96baa820 | 852 | { |
d471ea57 AC |
853 | int i; |
854 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
855 | { | |
856 | remote_protocol_Z[i].detect = remote_Z_packet_detect; | |
857 | update_packet_config (&remote_protocol_Z[i]); | |
858 | } | |
96baa820 JM |
859 | } |
860 | ||
861 | static void | |
fba45db2 | 862 | show_remote_protocol_Z_packet_cmd (char *args, int from_tty) |
96baa820 | 863 | { |
d471ea57 AC |
864 | int i; |
865 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
866 | { | |
867 | show_packet_config_cmd (&remote_protocol_Z[i]); | |
868 | } | |
96baa820 JM |
869 | } |
870 | ||
871 | /* Should we try the 'X' (remote binary download) packet? | |
872 | ||
873 | This variable (available to the user via "set remote X-packet") | |
874 | dictates whether downloads are sent in binary (via the 'X' packet). | |
875 | We assume that the stub can, and attempt to do it. This will be | |
876 | cleared if the stub does not understand it. This switch is still | |
877 | needed, though in cases when the packet is supported in the stub, | |
878 | but the connection does not allow it (i.e., 7-bit serial connection | |
879 | only). */ | |
880 | ||
881 | static struct packet_config remote_protocol_binary_download; | |
882 | ||
9d1f7ab2 MS |
883 | /* Should we try the 'ThreadInfo' query packet? |
884 | ||
885 | This variable (NOT available to the user: auto-detect only!) | |
886 | determines whether GDB will use the new, simpler "ThreadInfo" | |
887 | query or the older, more complex syntax for thread queries. | |
888 | This is an auto-detect variable (set to true at each connect, | |
889 | and set to false when the target fails to recognize it). */ | |
890 | ||
891 | static int use_threadinfo_query; | |
892 | static int use_threadextra_query; | |
893 | ||
96baa820 JM |
894 | static void |
895 | set_remote_protocol_binary_download_cmd (char *args, | |
896 | int from_tty, | |
897 | struct cmd_list_element *c) | |
898 | { | |
d471ea57 | 899 | update_packet_config (&remote_protocol_binary_download); |
96baa820 JM |
900 | } |
901 | ||
902 | static void | |
903 | show_remote_protocol_binary_download_cmd (char *args, | |
904 | int from_tty) | |
905 | { | |
906 | show_packet_config_cmd (&remote_protocol_binary_download); | |
907 | } | |
908 | ||
c906108c | 909 | |
43ff13b4 JM |
910 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
911 | PTR sigint_remote_twice_token; | |
912 | PTR sigint_remote_token; | |
913 | ||
c906108c SS |
914 | /* These are pointers to hook functions that may be set in order to |
915 | modify resume/wait behavior for a particular architecture. */ | |
916 | ||
507f3c78 KB |
917 | void (*target_resume_hook) (void); |
918 | void (*target_wait_loop_hook) (void); | |
c906108c SS |
919 | \f |
920 | ||
c5aa993b | 921 | |
c906108c SS |
922 | /* These are the threads which we last sent to the remote system. |
923 | -1 for all or -2 for not sent yet. */ | |
924 | static int general_thread; | |
cce74817 | 925 | static int continue_thread; |
c906108c SS |
926 | |
927 | /* Call this function as a result of | |
928 | 1) A halt indication (T packet) containing a thread id | |
929 | 2) A direct query of currthread | |
930 | 3) Successful execution of set thread | |
931 | */ | |
932 | ||
933 | static void | |
fba45db2 | 934 | record_currthread (int currthread) |
c906108c | 935 | { |
c906108c | 936 | general_thread = currthread; |
cce74817 | 937 | |
c906108c SS |
938 | /* If this is a new thread, add it to GDB's thread list. |
939 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 940 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 941 | { |
39f77062 | 942 | add_thread (pid_to_ptid (currthread)); |
8b93c638 JM |
943 | #ifdef UI_OUT |
944 | ui_out_text (uiout, "[New "); | |
39f77062 | 945 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 JM |
946 | ui_out_text (uiout, "]\n"); |
947 | #else | |
39f77062 KB |
948 | printf_filtered ("[New %s]\n", |
949 | target_pid_to_str (pid_to_ptid (currthread))); | |
8b93c638 | 950 | #endif |
0f71a2f6 | 951 | } |
c906108c SS |
952 | } |
953 | ||
954 | #define MAGIC_NULL_PID 42000 | |
955 | ||
956 | static void | |
fba45db2 | 957 | set_thread (int th, int gen) |
c906108c | 958 | { |
d01949b6 AC |
959 | struct remote_state *rs = get_remote_state (); |
960 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 961 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
962 | |
963 | if (state == th) | |
964 | return; | |
965 | ||
966 | buf[0] = 'H'; | |
967 | buf[1] = gen ? 'g' : 'c'; | |
968 | if (th == MAGIC_NULL_PID) | |
969 | { | |
970 | buf[2] = '0'; | |
971 | buf[3] = '\0'; | |
972 | } | |
973 | else if (th < 0) | |
974 | sprintf (&buf[2], "-%x", -th); | |
975 | else | |
976 | sprintf (&buf[2], "%x", th); | |
977 | putpkt (buf); | |
d01949b6 | 978 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 979 | if (gen) |
c5aa993b | 980 | general_thread = th; |
c906108c | 981 | else |
cce74817 | 982 | continue_thread = th; |
c906108c SS |
983 | } |
984 | \f | |
985 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
986 | ||
987 | static int | |
39f77062 | 988 | remote_thread_alive (ptid_t ptid) |
c906108c | 989 | { |
39f77062 | 990 | int tid = PIDGET (ptid); |
cce74817 | 991 | char buf[16]; |
c906108c | 992 | |
cce74817 JM |
993 | if (tid < 0) |
994 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 995 | else |
cce74817 | 996 | sprintf (buf, "T%08x", tid); |
c906108c | 997 | putpkt (buf); |
c2d11a7d | 998 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
999 | return (buf[0] == 'O' && buf[1] == 'K'); |
1000 | } | |
1001 | ||
1002 | /* About these extended threadlist and threadinfo packets. They are | |
1003 | variable length packets but, the fields within them are often fixed | |
1004 | length. They are redundent enough to send over UDP as is the | |
1005 | remote protocol in general. There is a matching unit test module | |
1006 | in libstub. */ | |
1007 | ||
cce74817 JM |
1008 | #define OPAQUETHREADBYTES 8 |
1009 | ||
1010 | /* a 64 bit opaque identifier */ | |
1011 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1012 | ||
1013 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
1014 | protocol encoding, and remote.c. it is not particularly changable */ | |
1015 | ||
1016 | /* Right now, the internal structure is int. We want it to be bigger. | |
1017 | Plan to fix this. | |
c5aa993b | 1018 | */ |
cce74817 | 1019 | |
c5aa993b | 1020 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 | 1021 | |
9d1f7ab2 | 1022 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cce74817 JM |
1023 | equivalint to the reply of the remote threadinfo packet */ |
1024 | ||
1025 | struct gdb_ext_thread_info | |
c5aa993b JM |
1026 | { |
1027 | threadref threadid; /* External form of thread reference */ | |
1028 | int active; /* Has state interesting to GDB? , regs, stack */ | |
1029 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
1030 | char shortname[32]; /* To be used to name threads */ | |
1031 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
1032 | }; | |
cce74817 JM |
1033 | |
1034 | /* The volume of remote transfers can be limited by submitting | |
1035 | a mask containing bits specifying the desired information. | |
1036 | Use a union of these values as the 'selection' parameter to | |
1037 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1038 | */ |
cce74817 JM |
1039 | |
1040 | #define TAG_THREADID 1 | |
1041 | #define TAG_EXISTS 2 | |
1042 | #define TAG_DISPLAY 4 | |
1043 | #define TAG_THREADNAME 8 | |
c5aa993b | 1044 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1045 | |
c906108c SS |
1046 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
1047 | ||
a14ed312 | 1048 | char *unpack_varlen_hex (char *buff, int *result); |
cce74817 | 1049 | |
a14ed312 | 1050 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1051 | |
a14ed312 | 1052 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1053 | |
a14ed312 | 1054 | static char *pack_hex_byte (char *pkt, int /*unsigned char */ byte); |
cce74817 | 1055 | |
a14ed312 | 1056 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1057 | |
a14ed312 | 1058 | static char *pack_int (char *buf, int value); |
cce74817 | 1059 | |
a14ed312 | 1060 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1061 | |
a14ed312 | 1062 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1063 | |
a14ed312 | 1064 | static char *pack_threadid (char *pkt, threadref * id); |
cce74817 | 1065 | |
a14ed312 | 1066 | static char *unpack_threadid (char *inbuf, threadref * id); |
cce74817 | 1067 | |
a14ed312 | 1068 | void int_to_threadref (threadref * id, int value); |
cce74817 | 1069 | |
a14ed312 | 1070 | static int threadref_to_int (threadref * ref); |
cce74817 | 1071 | |
a14ed312 | 1072 | static void copy_threadref (threadref * dest, threadref * src); |
cce74817 | 1073 | |
a14ed312 | 1074 | static int threadmatch (threadref * dest, threadref * src); |
cce74817 | 1075 | |
a14ed312 | 1076 | static char *pack_threadinfo_request (char *pkt, int mode, threadref * id); |
cce74817 | 1077 | |
a14ed312 KB |
1078 | static int remote_unpack_thread_info_response (char *pkt, |
1079 | threadref * expectedref, | |
1080 | struct gdb_ext_thread_info | |
1081 | *info); | |
cce74817 JM |
1082 | |
1083 | ||
a14ed312 KB |
1084 | static int remote_get_threadinfo (threadref * threadid, int fieldset, /*TAG mask */ |
1085 | struct gdb_ext_thread_info *info); | |
cce74817 | 1086 | |
a14ed312 KB |
1087 | static int adapt_remote_get_threadinfo (gdb_threadref * ref, |
1088 | int selection, | |
1089 | struct gdb_ext_thread_info *info); | |
cce74817 | 1090 | |
a14ed312 KB |
1091 | static char *pack_threadlist_request (char *pkt, int startflag, |
1092 | int threadcount, | |
1093 | threadref * nextthread); | |
cce74817 | 1094 | |
a14ed312 KB |
1095 | static int parse_threadlist_response (char *pkt, |
1096 | int result_limit, | |
1097 | threadref * original_echo, | |
1098 | threadref * resultlist, int *doneflag); | |
cce74817 | 1099 | |
a14ed312 KB |
1100 | static int remote_get_threadlist (int startflag, |
1101 | threadref * nextthread, | |
1102 | int result_limit, | |
1103 | int *done, | |
1104 | int *result_count, threadref * threadlist); | |
cce74817 | 1105 | |
c5aa993b | 1106 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 | 1107 | |
a14ed312 KB |
1108 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1109 | void *context, int looplimit); | |
cce74817 | 1110 | |
a14ed312 | 1111 | static int remote_newthread_step (threadref * ref, void *context); |
cce74817 | 1112 | |
c906108c SS |
1113 | /* encode 64 bits in 16 chars of hex */ |
1114 | ||
1115 | static const char hexchars[] = "0123456789abcdef"; | |
1116 | ||
1117 | static int | |
fba45db2 | 1118 | ishex (int ch, int *val) |
c906108c SS |
1119 | { |
1120 | if ((ch >= 'a') && (ch <= 'f')) | |
1121 | { | |
1122 | *val = ch - 'a' + 10; | |
1123 | return 1; | |
1124 | } | |
1125 | if ((ch >= 'A') && (ch <= 'F')) | |
1126 | { | |
1127 | *val = ch - 'A' + 10; | |
1128 | return 1; | |
1129 | } | |
1130 | if ((ch >= '0') && (ch <= '9')) | |
1131 | { | |
1132 | *val = ch - '0'; | |
1133 | return 1; | |
1134 | } | |
1135 | return 0; | |
1136 | } | |
1137 | ||
1138 | static int | |
fba45db2 | 1139 | stubhex (int ch) |
c906108c SS |
1140 | { |
1141 | if (ch >= 'a' && ch <= 'f') | |
1142 | return ch - 'a' + 10; | |
1143 | if (ch >= '0' && ch <= '9') | |
1144 | return ch - '0'; | |
1145 | if (ch >= 'A' && ch <= 'F') | |
1146 | return ch - 'A' + 10; | |
1147 | return -1; | |
1148 | } | |
1149 | ||
1150 | static int | |
fba45db2 | 1151 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1152 | { |
1153 | int nibble; | |
1154 | int retval = 0; | |
1155 | ||
1156 | while (fieldlength) | |
1157 | { | |
1158 | nibble = stubhex (*buff++); | |
1159 | retval |= nibble; | |
1160 | fieldlength--; | |
1161 | if (fieldlength) | |
1162 | retval = retval << 4; | |
1163 | } | |
1164 | return retval; | |
1165 | } | |
1166 | ||
1167 | char * | |
fba45db2 KB |
1168 | unpack_varlen_hex (char *buff, /* packet to parse */ |
1169 | int *result) | |
c906108c SS |
1170 | { |
1171 | int nibble; | |
1172 | int retval = 0; | |
1173 | ||
1174 | while (ishex (*buff, &nibble)) | |
1175 | { | |
1176 | buff++; | |
1177 | retval = retval << 4; | |
1178 | retval |= nibble & 0x0f; | |
1179 | } | |
1180 | *result = retval; | |
1181 | return buff; | |
1182 | } | |
1183 | ||
1184 | static char * | |
fba45db2 | 1185 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1186 | { |
1187 | ishex (*buf++, val); | |
1188 | return buf; | |
1189 | } | |
1190 | ||
1191 | static char * | |
fba45db2 | 1192 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1193 | { |
1194 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1195 | return buf; | |
1196 | } | |
1197 | ||
1198 | static char * | |
fba45db2 | 1199 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1200 | { |
1201 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1202 | *pkt++ = hexchars[(byte & 0xf)]; | |
1203 | return pkt; | |
1204 | } | |
1205 | ||
1206 | static char * | |
fba45db2 | 1207 | unpack_byte (char *buf, int *value) |
c906108c SS |
1208 | { |
1209 | *value = stub_unpack_int (buf, 2); | |
1210 | return buf + 2; | |
1211 | } | |
1212 | ||
1213 | static char * | |
fba45db2 | 1214 | pack_int (char *buf, int value) |
c906108c SS |
1215 | { |
1216 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1217 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1218 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1219 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1220 | return buf; | |
1221 | } | |
1222 | ||
1223 | static char * | |
fba45db2 | 1224 | unpack_int (char *buf, int *value) |
c906108c SS |
1225 | { |
1226 | *value = stub_unpack_int (buf, 8); | |
1227 | return buf + 8; | |
1228 | } | |
1229 | ||
c5aa993b | 1230 | #if 0 /* currently unused, uncomment when needed */ |
a14ed312 | 1231 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1232 | |
1233 | static char * | |
fba45db2 | 1234 | pack_string (char *pkt, char *string) |
c906108c SS |
1235 | { |
1236 | char ch; | |
1237 | int len; | |
1238 | ||
1239 | len = strlen (string); | |
1240 | if (len > 200) | |
1241 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1242 | pkt = pack_hex_byte (pkt, len); | |
1243 | while (len-- > 0) | |
1244 | { | |
1245 | ch = *string++; | |
1246 | if ((ch == '\0') || (ch == '#')) | |
1247 | ch = '*'; /* Protect encapsulation */ | |
1248 | *pkt++ = ch; | |
1249 | } | |
1250 | return pkt; | |
1251 | } | |
1252 | #endif /* 0 (unused) */ | |
1253 | ||
1254 | static char * | |
fba45db2 | 1255 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1256 | { |
1257 | while (length--) | |
1258 | *dest++ = *src++; | |
1259 | *dest = '\0'; | |
1260 | return src; | |
1261 | } | |
1262 | ||
1263 | static char * | |
fba45db2 | 1264 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1265 | { |
1266 | char *limit; | |
1267 | unsigned char *altid; | |
1268 | ||
1269 | altid = (unsigned char *) id; | |
1270 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1271 | while (pkt < limit) | |
1272 | pkt = pack_hex_byte (pkt, *altid++); | |
1273 | return pkt; | |
1274 | } | |
1275 | ||
1276 | ||
1277 | static char * | |
fba45db2 | 1278 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1279 | { |
1280 | char *altref; | |
1281 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1282 | int x, y; | |
1283 | ||
1284 | altref = (char *) id; | |
1285 | ||
1286 | while (inbuf < limit) | |
1287 | { | |
1288 | x = stubhex (*inbuf++); | |
1289 | y = stubhex (*inbuf++); | |
1290 | *altref++ = (x << 4) | y; | |
1291 | } | |
1292 | return inbuf; | |
1293 | } | |
1294 | ||
1295 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1296 | ints. This is due to a mismatch of specifications. We would like | |
1297 | to use 64bit thread references internally. This is an adapter | |
1298 | function. */ | |
1299 | ||
1300 | void | |
fba45db2 | 1301 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1302 | { |
1303 | unsigned char *scan; | |
1304 | ||
1305 | scan = (unsigned char *) id; | |
1306 | { | |
1307 | int i = 4; | |
1308 | while (i--) | |
1309 | *scan++ = 0; | |
1310 | } | |
1311 | *scan++ = (value >> 24) & 0xff; | |
1312 | *scan++ = (value >> 16) & 0xff; | |
1313 | *scan++ = (value >> 8) & 0xff; | |
1314 | *scan++ = (value & 0xff); | |
1315 | } | |
1316 | ||
1317 | static int | |
fba45db2 | 1318 | threadref_to_int (threadref *ref) |
c906108c SS |
1319 | { |
1320 | int i, value = 0; | |
1321 | unsigned char *scan; | |
1322 | ||
1323 | scan = (char *) ref; | |
1324 | scan += 4; | |
1325 | i = 4; | |
1326 | while (i-- > 0) | |
1327 | value = (value << 8) | ((*scan++) & 0xff); | |
1328 | return value; | |
1329 | } | |
1330 | ||
1331 | static void | |
fba45db2 | 1332 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1333 | { |
1334 | int i; | |
1335 | unsigned char *csrc, *cdest; | |
1336 | ||
1337 | csrc = (unsigned char *) src; | |
1338 | cdest = (unsigned char *) dest; | |
1339 | i = 8; | |
1340 | while (i--) | |
1341 | *cdest++ = *csrc++; | |
1342 | } | |
1343 | ||
1344 | static int | |
fba45db2 | 1345 | threadmatch (threadref *dest, threadref *src) |
c906108c SS |
1346 | { |
1347 | /* things are broken right now, so just assume we got a match */ | |
1348 | #if 0 | |
1349 | unsigned char *srcp, *destp; | |
1350 | int i, result; | |
1351 | srcp = (char *) src; | |
1352 | destp = (char *) dest; | |
1353 | ||
1354 | result = 1; | |
1355 | while (i-- > 0) | |
1356 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1357 | return result; | |
1358 | #endif | |
1359 | return 1; | |
1360 | } | |
1361 | ||
1362 | /* | |
c5aa993b JM |
1363 | threadid:1, # always request threadid |
1364 | context_exists:2, | |
1365 | display:4, | |
1366 | unique_name:8, | |
1367 | more_display:16 | |
1368 | */ | |
c906108c SS |
1369 | |
1370 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1371 | ||
1372 | static char * | |
fba45db2 | 1373 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c SS |
1374 | { |
1375 | *pkt++ = 'q'; /* Info Query */ | |
1376 | *pkt++ = 'P'; /* process or thread info */ | |
1377 | pkt = pack_int (pkt, mode); /* mode */ | |
1378 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1379 | *pkt = '\0'; /* terminate */ | |
1380 | return pkt; | |
1381 | } | |
1382 | ||
1383 | /* These values tag the fields in a thread info response packet */ | |
1384 | /* Tagging the fields allows us to request specific fields and to | |
1385 | add more fields as time goes by */ | |
1386 | ||
c5aa993b JM |
1387 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1388 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1389 | fetch registers and its stack */ | |
1390 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1391 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1392 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1393 | the process */ | |
c906108c SS |
1394 | |
1395 | static int | |
fba45db2 KB |
1396 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1397 | struct gdb_ext_thread_info *info) | |
c906108c | 1398 | { |
d01949b6 | 1399 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1400 | int mask, length; |
1401 | unsigned int tag; | |
1402 | threadref ref; | |
d01949b6 | 1403 | char *limit = pkt + (rs->remote_packet_size); /* plausable parsing limit */ |
c906108c SS |
1404 | int retval = 1; |
1405 | ||
1406 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1407 | info->active = 0; | |
1408 | info->display[0] = '\0'; | |
1409 | info->shortname[0] = '\0'; | |
1410 | info->more_display[0] = '\0'; | |
1411 | ||
1412 | /* Assume the characters indicating the packet type have been stripped */ | |
1413 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1414 | pkt = unpack_threadid (pkt, &ref); | |
1415 | ||
1416 | if (mask == 0) | |
1417 | warning ("Incomplete response to threadinfo request\n"); | |
1418 | if (!threadmatch (&ref, expectedref)) | |
1419 | { /* This is an answer to a different request */ | |
1420 | warning ("ERROR RMT Thread info mismatch\n"); | |
1421 | return 0; | |
1422 | } | |
1423 | copy_threadref (&info->threadid, &ref); | |
1424 | ||
1425 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1426 | ||
c5aa993b | 1427 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1428 | { |
1429 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1430 | pkt = unpack_byte (pkt, &length); /* length */ | |
1431 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1432 | { | |
1433 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1434 | retval = 0; | |
1435 | break; | |
1436 | } | |
1437 | if (tag == TAG_THREADID) | |
1438 | { | |
1439 | if (length != 16) | |
1440 | { | |
1441 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1442 | retval = 0; | |
1443 | break; | |
1444 | } | |
1445 | pkt = unpack_threadid (pkt, &ref); | |
1446 | mask = mask & ~TAG_THREADID; | |
1447 | continue; | |
1448 | } | |
1449 | if (tag == TAG_EXISTS) | |
1450 | { | |
1451 | info->active = stub_unpack_int (pkt, length); | |
1452 | pkt += length; | |
1453 | mask = mask & ~(TAG_EXISTS); | |
1454 | if (length > 8) | |
1455 | { | |
1456 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1457 | retval = 0; | |
1458 | break; | |
1459 | } | |
1460 | continue; | |
1461 | } | |
1462 | if (tag == TAG_THREADNAME) | |
1463 | { | |
1464 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1465 | mask = mask & ~TAG_THREADNAME; | |
1466 | continue; | |
1467 | } | |
1468 | if (tag == TAG_DISPLAY) | |
1469 | { | |
1470 | pkt = unpack_string (pkt, &info->display[0], length); | |
1471 | mask = mask & ~TAG_DISPLAY; | |
1472 | continue; | |
1473 | } | |
1474 | if (tag == TAG_MOREDISPLAY) | |
1475 | { | |
1476 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1477 | mask = mask & ~TAG_MOREDISPLAY; | |
1478 | continue; | |
1479 | } | |
1480 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1481 | break; /* Not a tag we know about */ | |
1482 | } | |
1483 | return retval; | |
1484 | } | |
1485 | ||
1486 | static int | |
fba45db2 KB |
1487 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1488 | struct gdb_ext_thread_info *info) | |
c906108c | 1489 | { |
d01949b6 | 1490 | struct remote_state *rs = get_remote_state (); |
c906108c | 1491 | int result; |
d01949b6 | 1492 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1493 | |
1494 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1495 | putpkt (threadinfo_pkt); | |
d01949b6 | 1496 | getpkt (threadinfo_pkt, (rs->remote_packet_size), 0); |
c906108c SS |
1497 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, |
1498 | info); | |
1499 | return result; | |
1500 | } | |
1501 | ||
1502 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1503 | representation of a threadid. */ | |
1504 | ||
1505 | static int | |
fba45db2 KB |
1506 | adapt_remote_get_threadinfo (gdb_threadref *ref, int selection, |
1507 | struct gdb_ext_thread_info *info) | |
c906108c SS |
1508 | { |
1509 | threadref lclref; | |
1510 | ||
1511 | int_to_threadref (&lclref, *ref); | |
1512 | return remote_get_threadinfo (&lclref, selection, info); | |
1513 | } | |
1514 | ||
1515 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1516 | ||
1517 | static char * | |
fba45db2 KB |
1518 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1519 | threadref *nextthread) | |
c906108c SS |
1520 | { |
1521 | *pkt++ = 'q'; /* info query packet */ | |
1522 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1523 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1524 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1525 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1526 | *pkt = '\0'; | |
1527 | return pkt; | |
1528 | } | |
1529 | ||
1530 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1531 | ||
1532 | static int | |
fba45db2 KB |
1533 | parse_threadlist_response (char *pkt, int result_limit, |
1534 | threadref *original_echo, threadref *resultlist, | |
1535 | int *doneflag) | |
c906108c | 1536 | { |
d01949b6 | 1537 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1538 | char *limit; |
1539 | int count, resultcount, done; | |
1540 | ||
1541 | resultcount = 0; | |
1542 | /* Assume the 'q' and 'M chars have been stripped. */ | |
d01949b6 | 1543 | limit = pkt + ((rs->remote_packet_size) - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1544 | pkt = unpack_byte (pkt, &count); /* count field */ |
1545 | pkt = unpack_nibble (pkt, &done); | |
1546 | /* The first threadid is the argument threadid. */ | |
1547 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1548 | while ((count-- > 0) && (pkt < limit)) | |
1549 | { | |
1550 | pkt = unpack_threadid (pkt, resultlist++); | |
1551 | if (resultcount++ >= result_limit) | |
1552 | break; | |
1553 | } | |
1554 | if (doneflag) | |
1555 | *doneflag = done; | |
1556 | return resultcount; | |
1557 | } | |
1558 | ||
1559 | static int | |
fba45db2 KB |
1560 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1561 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1562 | { |
d01949b6 | 1563 | struct remote_state *rs = get_remote_state (); |
c906108c | 1564 | static threadref echo_nextthread; |
d01949b6 AC |
1565 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1566 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1567 | int result = 1; |
1568 | ||
1569 | /* Trancate result limit to be smaller than the packet size */ | |
d01949b6 AC |
1570 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= (rs->remote_packet_size)) |
1571 | result_limit = ((rs->remote_packet_size) / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1572 | |
1573 | pack_threadlist_request (threadlist_packet, | |
1574 | startflag, result_limit, nextthread); | |
1575 | putpkt (threadlist_packet); | |
d01949b6 | 1576 | getpkt (t_response, (rs->remote_packet_size), 0); |
c906108c SS |
1577 | |
1578 | *result_count = | |
1579 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1580 | threadlist, done); | |
1581 | ||
1582 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1583 | { | |
1584 | /* FIXME: This is a good reason to drop the packet */ | |
1585 | /* Possably, there is a duplicate response */ | |
1586 | /* Possabilities : | |
1587 | retransmit immediatly - race conditions | |
1588 | retransmit after timeout - yes | |
1589 | exit | |
1590 | wait for packet, then exit | |
1591 | */ | |
1592 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1593 | return 0; /* I choose simply exiting */ | |
1594 | } | |
1595 | if (*result_count <= 0) | |
1596 | { | |
1597 | if (*done != 1) | |
1598 | { | |
1599 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1600 | result = 0; | |
1601 | } | |
1602 | return result; /* break; */ | |
1603 | } | |
1604 | if (*result_count > result_limit) | |
1605 | { | |
1606 | *result_count = 0; | |
1607 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1608 | return 0; | |
1609 | } | |
1610 | return result; | |
1611 | } | |
1612 | ||
1613 | /* This is the interface between remote and threads, remotes upper interface */ | |
1614 | ||
1615 | /* remote_find_new_threads retrieves the thread list and for each | |
1616 | thread in the list, looks up the thread in GDB's internal list, | |
1617 | ading the thread if it does not already exist. This involves | |
1618 | getting partial thread lists from the remote target so, polling the | |
1619 | quit_flag is required. */ | |
1620 | ||
1621 | ||
1622 | /* About this many threadisds fit in a packet. */ | |
1623 | ||
1624 | #define MAXTHREADLISTRESULTS 32 | |
1625 | ||
1626 | static int | |
fba45db2 KB |
1627 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1628 | int looplimit) | |
c906108c SS |
1629 | { |
1630 | int done, i, result_count; | |
1631 | int startflag = 1; | |
1632 | int result = 1; | |
1633 | int loopcount = 0; | |
1634 | static threadref nextthread; | |
1635 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1636 | ||
1637 | done = 0; | |
1638 | while (!done) | |
1639 | { | |
1640 | if (loopcount++ > looplimit) | |
1641 | { | |
1642 | result = 0; | |
1643 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1644 | break; | |
1645 | } | |
1646 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1647 | &done, &result_count, resultthreadlist)) | |
1648 | { | |
1649 | result = 0; | |
1650 | break; | |
1651 | } | |
1652 | /* clear for later iterations */ | |
1653 | startflag = 0; | |
1654 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1655 | if (result_count >= 1) | |
1656 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1657 | i = 0; | |
1658 | while (result_count--) | |
1659 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1660 | break; | |
1661 | } | |
1662 | return result; | |
1663 | } | |
1664 | ||
1665 | static int | |
fba45db2 | 1666 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1667 | { |
39f77062 | 1668 | ptid_t ptid; |
c906108c | 1669 | |
39f77062 KB |
1670 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1671 | ||
1672 | if (!in_thread_list (ptid)) | |
1673 | add_thread (ptid); | |
c906108c SS |
1674 | return 1; /* continue iterator */ |
1675 | } | |
1676 | ||
1677 | #define CRAZY_MAX_THREADS 1000 | |
1678 | ||
39f77062 KB |
1679 | static ptid_t |
1680 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1681 | { |
d01949b6 AC |
1682 | struct remote_state *rs = get_remote_state (); |
1683 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1684 | |
1685 | putpkt ("qC"); | |
d01949b6 | 1686 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 1687 | if (buf[0] == 'Q' && buf[1] == 'C') |
39f77062 | 1688 | return pid_to_ptid (strtol (&buf[2], NULL, 16)); |
c906108c SS |
1689 | else |
1690 | return oldpid; | |
1691 | } | |
1692 | ||
9d1f7ab2 MS |
1693 | /* Find new threads for info threads command. |
1694 | * Original version, using John Metzler's thread protocol. | |
1695 | */ | |
cce74817 JM |
1696 | |
1697 | static void | |
fba45db2 | 1698 | remote_find_new_threads (void) |
c906108c | 1699 | { |
c5aa993b JM |
1700 | remote_threadlist_iterator (remote_newthread_step, 0, |
1701 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1702 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1703 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1704 | } |
1705 | ||
9d1f7ab2 MS |
1706 | /* |
1707 | * Find all threads for info threads command. | |
1708 | * Uses new thread protocol contributed by Cisco. | |
1709 | * Falls back and attempts to use the older method (above) | |
1710 | * if the target doesn't respond to the new method. | |
1711 | */ | |
1712 | ||
0f71a2f6 JM |
1713 | static void |
1714 | remote_threads_info (void) | |
1715 | { | |
d01949b6 AC |
1716 | struct remote_state *rs = get_remote_state (); |
1717 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1718 | char *bufp; |
0f71a2f6 JM |
1719 | int tid; |
1720 | ||
1721 | if (remote_desc == 0) /* paranoia */ | |
1722 | error ("Command can only be used when connected to the remote target."); | |
1723 | ||
9d1f7ab2 MS |
1724 | if (use_threadinfo_query) |
1725 | { | |
1726 | putpkt ("qfThreadInfo"); | |
1727 | bufp = buf; | |
d01949b6 | 1728 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1729 | if (bufp[0] != '\0') /* q packet recognized */ |
1730 | { | |
1731 | while (*bufp++ == 'm') /* reply contains one or more TID */ | |
1732 | { | |
1733 | do | |
1734 | { | |
1735 | tid = strtol (bufp, &bufp, 16); | |
39f77062 KB |
1736 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1737 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1738 | } |
1739 | while (*bufp++ == ','); /* comma-separated list */ | |
1740 | putpkt ("qsThreadInfo"); | |
1741 | bufp = buf; | |
d01949b6 | 1742 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1743 | } |
1744 | return; /* done */ | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | /* Else fall back to old method based on jmetzler protocol. */ | |
1749 | use_threadinfo_query = 0; | |
1750 | remote_find_new_threads (); | |
1751 | return; | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | * Collect a descriptive string about the given thread. | |
1756 | * The target may say anything it wants to about the thread | |
1757 | * (typically info about its blocked / runnable state, name, etc.). | |
1758 | * This string will appear in the info threads display. | |
1759 | * | |
1760 | * Optional: targets are not required to implement this function. | |
1761 | */ | |
1762 | ||
1763 | static char * | |
1764 | remote_threads_extra_info (struct thread_info *tp) | |
1765 | { | |
d01949b6 | 1766 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1767 | int result; |
1768 | int set; | |
1769 | threadref id; | |
1770 | struct gdb_ext_thread_info threadinfo; | |
1771 | static char display_buf[100]; /* arbitrary... */ | |
d01949b6 | 1772 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1773 | int n = 0; /* position in display_buf */ |
1774 | ||
1775 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 AC |
1776 | internal_error (__FILE__, __LINE__, |
1777 | "remote_threads_extra_info"); | |
9d1f7ab2 MS |
1778 | |
1779 | if (use_threadextra_query) | |
1780 | { | |
39f77062 | 1781 | sprintf (bufp, "qThreadExtraInfo,%x", PIDGET (tp->ptid)); |
9d1f7ab2 | 1782 | putpkt (bufp); |
d01949b6 | 1783 | getpkt (bufp, (rs->remote_packet_size), 0); |
9d1f7ab2 MS |
1784 | if (bufp[0] != 0) |
1785 | { | |
30559e10 MS |
1786 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
1787 | result = hex2bin (bufp, display_buf, n); | |
1788 | display_buf [result] = '\0'; | |
9d1f7ab2 MS |
1789 | return display_buf; |
1790 | } | |
0f71a2f6 | 1791 | } |
9d1f7ab2 MS |
1792 | |
1793 | /* If the above query fails, fall back to the old method. */ | |
1794 | use_threadextra_query = 0; | |
1795 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1796 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1797 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1798 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1799 | if (threadinfo.active) | |
0f71a2f6 | 1800 | { |
9d1f7ab2 MS |
1801 | if (*threadinfo.shortname) |
1802 | n += sprintf(&display_buf[0], " Name: %s,", threadinfo.shortname); | |
1803 | if (*threadinfo.display) | |
1804 | n += sprintf(&display_buf[n], " State: %s,", threadinfo.display); | |
1805 | if (*threadinfo.more_display) | |
1806 | n += sprintf(&display_buf[n], " Priority: %s", | |
1807 | threadinfo.more_display); | |
1808 | ||
1809 | if (n > 0) | |
c5aa993b | 1810 | { |
9d1f7ab2 MS |
1811 | /* for purely cosmetic reasons, clear up trailing commas */ |
1812 | if (',' == display_buf[n-1]) | |
1813 | display_buf[n-1] = ' '; | |
1814 | return display_buf; | |
c5aa993b | 1815 | } |
0f71a2f6 | 1816 | } |
9d1f7ab2 | 1817 | return NULL; |
0f71a2f6 | 1818 | } |
9d1f7ab2 | 1819 | |
c906108c | 1820 | \f |
c5aa993b | 1821 | |
c906108c SS |
1822 | /* Restart the remote side; this is an extended protocol operation. */ |
1823 | ||
1824 | static void | |
fba45db2 | 1825 | extended_remote_restart (void) |
c906108c | 1826 | { |
d01949b6 AC |
1827 | struct remote_state *rs = get_remote_state (); |
1828 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1829 | |
1830 | /* Send the restart command; for reasons I don't understand the | |
1831 | remote side really expects a number after the "R". */ | |
1832 | buf[0] = 'R'; | |
1833 | sprintf (&buf[1], "%x", 0); | |
1834 | putpkt (buf); | |
1835 | ||
1836 | /* Now query for status so this looks just like we restarted | |
1837 | gdbserver from scratch. */ | |
1838 | putpkt ("?"); | |
d01949b6 | 1839 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1840 | } |
1841 | \f | |
1842 | /* Clean up connection to a remote debugger. */ | |
1843 | ||
1844 | /* ARGSUSED */ | |
1845 | static void | |
fba45db2 | 1846 | remote_close (int quitting) |
c906108c SS |
1847 | { |
1848 | if (remote_desc) | |
2cd58942 | 1849 | serial_close (remote_desc); |
c906108c SS |
1850 | remote_desc = NULL; |
1851 | } | |
1852 | ||
1853 | /* Query the remote side for the text, data and bss offsets. */ | |
1854 | ||
1855 | static void | |
fba45db2 | 1856 | get_offsets (void) |
c906108c | 1857 | { |
d01949b6 AC |
1858 | struct remote_state *rs = get_remote_state (); |
1859 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1860 | char *ptr; |
c906108c SS |
1861 | int lose; |
1862 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1863 | struct section_offsets *offs; | |
1864 | ||
1865 | putpkt ("qOffsets"); | |
1866 | ||
d01949b6 | 1867 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
1868 | |
1869 | if (buf[0] == '\000') | |
1870 | return; /* Return silently. Stub doesn't support | |
1871 | this command. */ | |
1872 | if (buf[0] == 'E') | |
1873 | { | |
1874 | warning ("Remote failure reply: %s", buf); | |
1875 | return; | |
1876 | } | |
1877 | ||
1878 | /* Pick up each field in turn. This used to be done with scanf, but | |
1879 | scanf will make trouble if CORE_ADDR size doesn't match | |
1880 | conversion directives correctly. The following code will work | |
1881 | with any size of CORE_ADDR. */ | |
1882 | text_addr = data_addr = bss_addr = 0; | |
1883 | ptr = buf; | |
1884 | lose = 0; | |
1885 | ||
1886 | if (strncmp (ptr, "Text=", 5) == 0) | |
1887 | { | |
1888 | ptr += 5; | |
1889 | /* Don't use strtol, could lose on big values. */ | |
1890 | while (*ptr && *ptr != ';') | |
1891 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1892 | } | |
1893 | else | |
1894 | lose = 1; | |
1895 | ||
1896 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1897 | { | |
1898 | ptr += 6; | |
1899 | while (*ptr && *ptr != ';') | |
1900 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1901 | } | |
1902 | else | |
1903 | lose = 1; | |
1904 | ||
1905 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1906 | { | |
1907 | ptr += 5; | |
1908 | while (*ptr && *ptr != ';') | |
1909 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1910 | } | |
1911 | else | |
1912 | lose = 1; | |
1913 | ||
1914 | if (lose) | |
1915 | error ("Malformed response to offset query, %s", buf); | |
1916 | ||
1917 | if (symfile_objfile == NULL) | |
1918 | return; | |
1919 | ||
d4f3574e SS |
1920 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
1921 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
c906108c | 1922 | |
a4c8257b | 1923 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1924 | |
1925 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1926 | because that's what nlmconv does now. The real solution requires changes | |
1927 | to the stub and remote.c that I don't have time to do right now. */ | |
1928 | ||
a4c8257b EZ |
1929 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1930 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1931 | |
1932 | objfile_relocate (symfile_objfile, offs); | |
1933 | } | |
1934 | ||
0f71a2f6 JM |
1935 | /* |
1936 | * Cisco version of section offsets: | |
1937 | * | |
1938 | * Instead of having GDB query the target for the section offsets, | |
1939 | * Cisco lets the target volunteer the information! It's also in | |
1940 | * a different format, so here are the functions that will decode | |
1941 | * a section offset packet from a Cisco target. | |
1942 | */ | |
1943 | ||
1944 | /* | |
1945 | * Function: remote_cisco_section_offsets | |
1946 | * | |
1947 | * Returns: zero for success, non-zero for failure | |
1948 | */ | |
1949 | ||
c5aa993b | 1950 | static int |
c2d11a7d JM |
1951 | remote_cisco_section_offsets (bfd_vma text_addr, |
1952 | bfd_vma data_addr, | |
1953 | bfd_vma bss_addr, | |
1954 | bfd_signed_vma *text_offs, | |
1955 | bfd_signed_vma *data_offs, | |
1956 | bfd_signed_vma *bss_offs) | |
0f71a2f6 JM |
1957 | { |
1958 | bfd_vma text_base, data_base, bss_base; | |
1959 | struct minimal_symbol *start; | |
1960 | asection *sect; | |
c5aa993b | 1961 | bfd *abfd; |
0f71a2f6 | 1962 | int len; |
0f71a2f6 JM |
1963 | |
1964 | if (symfile_objfile == NULL) | |
c5aa993b | 1965 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1966 | |
1967 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1968 | if (start == NULL) | |
c5aa993b | 1969 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1970 | |
1971 | data_base = bss_base = 0; | |
1972 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1973 | ||
1974 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1975 | for (sect = abfd->sections; |
0f71a2f6 JM |
1976 | sect != 0; |
1977 | sect = sect->next) | |
1978 | { | |
ce359b09 | 1979 | const char *p = bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1980 | len = strlen (p); |
1981 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1982 | if (data_base == 0 || | |
1983 | data_base > bfd_get_section_vma (abfd, sect)) | |
1984 | data_base = bfd_get_section_vma (abfd, sect); | |
1985 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1986 | if (bss_base == 0 || |
0f71a2f6 JM |
1987 | bss_base > bfd_get_section_vma (abfd, sect)) |
1988 | bss_base = bfd_get_section_vma (abfd, sect); | |
1989 | } | |
1990 | *text_offs = text_addr - text_base; | |
1991 | *data_offs = data_addr - data_base; | |
c5aa993b | 1992 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1993 | if (remote_debug) |
1994 | { | |
1995 | char tmp[128]; | |
1996 | ||
1997 | sprintf (tmp, "VMA: text = 0x"); | |
1998 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1999 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 2000 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 2001 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
2002 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
2003 | fprintf_filtered (gdb_stdlog, tmp); | |
2004 | fprintf_filtered (gdb_stdlog, | |
d4f3574e SS |
2005 | "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n", |
2006 | paddr_nz (*text_offs), | |
2007 | paddr_nz (*data_offs), | |
2008 | paddr_nz (*bss_offs)); | |
0f71a2f6 JM |
2009 | } |
2010 | ||
2011 | return 0; | |
2012 | } | |
2013 | ||
2014 | /* | |
2015 | * Function: remote_cisco_objfile_relocate | |
2016 | * | |
2017 | * Relocate the symbol file for a remote target. | |
2018 | */ | |
2019 | ||
96baa820 | 2020 | void |
fba45db2 KB |
2021 | remote_cisco_objfile_relocate (bfd_signed_vma text_off, bfd_signed_vma data_off, |
2022 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
2023 | { |
2024 | struct section_offsets *offs; | |
2025 | ||
c5aa993b | 2026 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2027 | { |
2028 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
2029 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
2030 | simple canonical representation for this stuff. */ | |
0f71a2f6 | 2031 | |
d4f3574e SS |
2032 | offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); |
2033 | memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); | |
0f71a2f6 | 2034 | |
a4c8257b EZ |
2035 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_off; |
2036 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_off; | |
2037 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = bss_off; | |
0f71a2f6 JM |
2038 | |
2039 | /* First call the standard objfile_relocate. */ | |
2040 | objfile_relocate (symfile_objfile, offs); | |
2041 | ||
2042 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
2043 | the exec target. These entries will control memory transfers |
2044 | from the exec file. */ | |
0f71a2f6 JM |
2045 | |
2046 | exec_set_section_offsets (text_off, data_off, bss_off); | |
2047 | } | |
2048 | } | |
2049 | ||
c906108c SS |
2050 | /* Stub for catch_errors. */ |
2051 | ||
0f71a2f6 | 2052 | static int |
c2d11a7d | 2053 | remote_start_remote_dummy (void *dummy) |
0f71a2f6 JM |
2054 | { |
2055 | start_remote (); /* Initialize gdb process mechanisms */ | |
2056 | return 1; | |
2057 | } | |
2058 | ||
c906108c | 2059 | static int |
fba45db2 | 2060 | remote_start_remote (PTR dummy) |
c906108c | 2061 | { |
8edbea78 | 2062 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c SS |
2063 | |
2064 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2065 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2066 | |
2067 | /* Let the stub know that we want it to return the thread. */ | |
2068 | set_thread (-1, 0); | |
2069 | ||
39f77062 | 2070 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c SS |
2071 | |
2072 | get_offsets (); /* Get text, data & bss offsets */ | |
2073 | ||
2074 | putpkt ("?"); /* initiate a query from remote machine */ | |
8edbea78 | 2075 | immediate_quit--; |
c906108c | 2076 | |
0f71a2f6 | 2077 | return remote_start_remote_dummy (dummy); |
c906108c SS |
2078 | } |
2079 | ||
2080 | /* Open a connection to a remote debugger. | |
2081 | NAME is the filename used for communication. */ | |
2082 | ||
2083 | static void | |
fba45db2 | 2084 | remote_open (char *name, int from_tty) |
c906108c SS |
2085 | { |
2086 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
2087 | } | |
2088 | ||
43ff13b4 JM |
2089 | /* Just like remote_open, but with asynchronous support. */ |
2090 | static void | |
fba45db2 | 2091 | remote_async_open (char *name, int from_tty) |
43ff13b4 JM |
2092 | { |
2093 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
2094 | } | |
2095 | ||
c906108c SS |
2096 | /* Open a connection to a remote debugger using the extended |
2097 | remote gdb protocol. NAME is the filename used for communication. */ | |
2098 | ||
2099 | static void | |
fba45db2 | 2100 | extended_remote_open (char *name, int from_tty) |
c906108c | 2101 | { |
c5aa993b | 2102 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
2103 | } |
2104 | ||
43ff13b4 JM |
2105 | /* Just like extended_remote_open, but with asynchronous support. */ |
2106 | static void | |
fba45db2 | 2107 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2108 | { |
c5aa993b | 2109 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
2110 | } |
2111 | ||
c906108c SS |
2112 | /* Generic code for opening a connection to a remote target. */ |
2113 | ||
d471ea57 AC |
2114 | static void |
2115 | init_all_packet_configs (void) | |
2116 | { | |
2117 | int i; | |
44eaed12 C |
2118 | update_packet_config (&remote_protocol_e); |
2119 | update_packet_config (&remote_protocol_E); | |
d471ea57 | 2120 | update_packet_config (&remote_protocol_P); |
dc8acb97 | 2121 | update_packet_config (&remote_protocol_qSymbol); |
d471ea57 AC |
2122 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2123 | update_packet_config (&remote_protocol_Z[i]); | |
2124 | /* Force remote_write_bytes to check whether target supports binary | |
2125 | downloading. */ | |
2126 | update_packet_config (&remote_protocol_binary_download); | |
2127 | } | |
2128 | ||
dc8acb97 MS |
2129 | /* Symbol look-up. */ |
2130 | ||
2131 | static void | |
2132 | remote_check_symbols (struct objfile *objfile) | |
2133 | { | |
d01949b6 | 2134 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2135 | char *msg, *reply, *tmp; |
2136 | struct minimal_symbol *sym; | |
2137 | int end; | |
2138 | ||
2139 | if (remote_protocol_qSymbol.support == PACKET_DISABLE) | |
2140 | return; | |
2141 | ||
d01949b6 AC |
2142 | msg = alloca (rs->remote_packet_size); |
2143 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 MS |
2144 | |
2145 | /* Invite target to request symbol lookups. */ | |
2146 | ||
2147 | putpkt ("qSymbol::"); | |
d01949b6 | 2148 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2149 | packet_ok (reply, &remote_protocol_qSymbol); |
2150 | ||
2151 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2152 | { | |
2153 | tmp = &reply[8]; | |
2154 | end = hex2bin (tmp, msg, strlen (tmp) / 2); | |
2155 | msg[end] = '\0'; | |
2156 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2157 | if (sym == NULL) | |
2158 | sprintf (msg, "qSymbol::%s", &reply[8]); | |
2159 | else | |
2160 | sprintf (msg, "qSymbol:%s:%s", | |
2161 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
2162 | &reply[8]); | |
2163 | putpkt (msg); | |
d01949b6 | 2164 | getpkt (reply, (rs->remote_packet_size), 0); |
dc8acb97 MS |
2165 | } |
2166 | } | |
2167 | ||
c906108c | 2168 | static void |
fba45db2 KB |
2169 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
2170 | int extended_p) | |
c906108c | 2171 | { |
d01949b6 | 2172 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2173 | if (name == 0) |
2174 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2175 | serial device is attached to the remote system\n\ |
2176 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
c906108c | 2177 | |
6426a772 JM |
2178 | /* See FIXME above */ |
2179 | wait_forever_enabled_p = 1; | |
2180 | ||
c906108c SS |
2181 | target_preopen (from_tty); |
2182 | ||
2183 | unpush_target (target); | |
2184 | ||
2cd58942 | 2185 | remote_desc = serial_open (name); |
c906108c SS |
2186 | if (!remote_desc) |
2187 | perror_with_name (name); | |
2188 | ||
2189 | if (baud_rate != -1) | |
2190 | { | |
2cd58942 | 2191 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2192 | { |
2cd58942 | 2193 | serial_close (remote_desc); |
c906108c SS |
2194 | perror_with_name (name); |
2195 | } | |
2196 | } | |
2197 | ||
2cd58942 | 2198 | serial_raw (remote_desc); |
c906108c SS |
2199 | |
2200 | /* If there is something sitting in the buffer we might take it as a | |
2201 | response to a command, which would be bad. */ | |
2cd58942 | 2202 | serial_flush_input (remote_desc); |
c906108c SS |
2203 | |
2204 | if (from_tty) | |
2205 | { | |
2206 | puts_filtered ("Remote debugging using "); | |
2207 | puts_filtered (name); | |
2208 | puts_filtered ("\n"); | |
2209 | } | |
c5aa993b | 2210 | push_target (target); /* Switch to using remote target now */ |
c906108c | 2211 | |
d471ea57 | 2212 | init_all_packet_configs (); |
96baa820 | 2213 | |
c5aa993b | 2214 | general_thread = -2; |
cce74817 | 2215 | continue_thread = -2; |
c906108c | 2216 | |
9d1f7ab2 MS |
2217 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2218 | use_threadinfo_query = 1; | |
2219 | use_threadextra_query = 1; | |
2220 | ||
c906108c SS |
2221 | /* Without this, some commands which require an active target (such |
2222 | as kill) won't work. This variable serves (at least) double duty | |
2223 | as both the pid of the target process (if it has such), and as a | |
2224 | flag indicating that a target is active. These functions should | |
2225 | be split out into seperate variables, especially since GDB will | |
2226 | someday have a notion of debugging several processes. */ | |
2227 | ||
39f77062 | 2228 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
f78f6cf1 MS |
2229 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2230 | /* First delete any symbols previously loaded from shared libraries. */ | |
2231 | no_shared_libraries (NULL, 0); | |
2232 | #endif | |
2233 | ||
c906108c SS |
2234 | /* Start the remote connection; if error (0), discard this target. |
2235 | In particular, if the user quits, be sure to discard it | |
2236 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2237 | if (!catch_errors (remote_start_remote, NULL, |
2238 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
2239 | RETURN_MASK_ALL)) |
2240 | { | |
2241 | pop_target (); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | if (extended_p) | |
2246 | { | |
6240bebf | 2247 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2248 | char *buf = alloca (rs->remote_packet_size); |
c906108c | 2249 | putpkt ("!"); |
d01949b6 | 2250 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 2251 | } |
f78f6cf1 | 2252 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2253 | /* FIXME: need a master target_open vector from which all |
2254 | remote_opens can be called, so that stuff like this can | |
2255 | go there. Failing that, the following code must be copied | |
2256 | to the open function for any remote target that wants to | |
2257 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2258 | |
2259 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2260 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2261 | { |
2262 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2263 | remote_check_symbols (symfile_objfile); | |
2264 | } | |
6240bebf | 2265 | #endif |
c906108c SS |
2266 | } |
2267 | ||
43ff13b4 JM |
2268 | /* Just like remote_open but with asynchronous support. */ |
2269 | static void | |
fba45db2 KB |
2270 | remote_async_open_1 (char *name, int from_tty, struct target_ops *target, |
2271 | int extended_p) | |
43ff13b4 | 2272 | { |
d01949b6 | 2273 | struct remote_state *rs = get_remote_state (); |
43ff13b4 JM |
2274 | if (name == 0) |
2275 | error ("To open a remote debug connection, you need to specify what\n\ | |
0d06e24b JM |
2276 | serial device is attached to the remote system\n\ |
2277 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
43ff13b4 JM |
2278 | |
2279 | target_preopen (from_tty); | |
2280 | ||
2281 | unpush_target (target); | |
2282 | ||
2cd58942 | 2283 | remote_desc = serial_open (name); |
43ff13b4 JM |
2284 | if (!remote_desc) |
2285 | perror_with_name (name); | |
2286 | ||
2287 | if (baud_rate != -1) | |
2288 | { | |
2cd58942 | 2289 | if (serial_setbaudrate (remote_desc, baud_rate)) |
43ff13b4 | 2290 | { |
2cd58942 | 2291 | serial_close (remote_desc); |
43ff13b4 JM |
2292 | perror_with_name (name); |
2293 | } | |
2294 | } | |
2295 | ||
2cd58942 | 2296 | serial_raw (remote_desc); |
43ff13b4 JM |
2297 | |
2298 | /* If there is something sitting in the buffer we might take it as a | |
2299 | response to a command, which would be bad. */ | |
2cd58942 | 2300 | serial_flush_input (remote_desc); |
43ff13b4 JM |
2301 | |
2302 | if (from_tty) | |
2303 | { | |
2304 | puts_filtered ("Remote debugging using "); | |
2305 | puts_filtered (name); | |
2306 | puts_filtered ("\n"); | |
2307 | } | |
2308 | ||
c5aa993b | 2309 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 2310 | |
d471ea57 | 2311 | init_all_packet_configs (); |
43ff13b4 | 2312 | |
c5aa993b | 2313 | general_thread = -2; |
43ff13b4 JM |
2314 | continue_thread = -2; |
2315 | ||
9d1f7ab2 MS |
2316 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2317 | use_threadinfo_query = 1; | |
2318 | use_threadextra_query = 1; | |
2319 | ||
43ff13b4 JM |
2320 | /* Without this, some commands which require an active target (such |
2321 | as kill) won't work. This variable serves (at least) double duty | |
2322 | as both the pid of the target process (if it has such), and as a | |
2323 | flag indicating that a target is active. These functions should | |
2324 | be split out into seperate variables, especially since GDB will | |
2325 | someday have a notion of debugging several processes. */ | |
39f77062 | 2326 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
6426a772 JM |
2327 | |
2328 | /* With this target we start out by owning the terminal. */ | |
2329 | remote_async_terminal_ours_p = 1; | |
2330 | ||
2331 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2332 | assumed that the target is already ready and able to respond to | |
e26cc349 | 2333 | requests. Unfortunately remote_start_remote() eventually calls |
6426a772 JM |
2334 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
2335 | around this. Eventually a mechanism that allows | |
2336 | wait_for_inferior() to expect/get timeouts will be | |
2337 | implemented. */ | |
2338 | wait_forever_enabled_p = 0; | |
2339 | ||
f78f6cf1 MS |
2340 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
2341 | /* First delete any symbols previously loaded from shared libraries. */ | |
2342 | no_shared_libraries (NULL, 0); | |
2343 | #endif | |
2344 | ||
43ff13b4 JM |
2345 | /* Start the remote connection; if error (0), discard this target. |
2346 | In particular, if the user quits, be sure to discard it | |
2347 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2348 | if (!catch_errors (remote_start_remote, NULL, |
2349 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2350 | RETURN_MASK_ALL)) |
2351 | { | |
43ff13b4 | 2352 | pop_target (); |
6426a772 | 2353 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
2354 | return; |
2355 | } | |
2356 | ||
6426a772 JM |
2357 | wait_forever_enabled_p = 1; |
2358 | ||
2359 | if (extended_p) | |
43ff13b4 | 2360 | { |
6240bebf | 2361 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2362 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2363 | putpkt ("!"); |
d01949b6 | 2364 | getpkt (buf, (rs->remote_packet_size), 0); |
43ff13b4 | 2365 | } |
f78f6cf1 | 2366 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
6240bebf MS |
2367 | /* FIXME: need a master target_open vector from which all |
2368 | remote_opens can be called, so that stuff like this can | |
2369 | go there. Failing that, the following code must be copied | |
2370 | to the open function for any remote target that wants to | |
2371 | support svr4 shared libraries. */ | |
f78f6cf1 MS |
2372 | |
2373 | /* Set up to detect and load shared libraries. */ | |
6240bebf | 2374 | if (exec_bfd) /* No use without an exec file. */ |
dc8acb97 MS |
2375 | { |
2376 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); | |
2377 | remote_check_symbols (symfile_objfile); | |
2378 | } | |
6240bebf | 2379 | #endif |
43ff13b4 JM |
2380 | } |
2381 | ||
c906108c SS |
2382 | /* This takes a program previously attached to and detaches it. After |
2383 | this is done, GDB can be used to debug some other program. We | |
2384 | better not have left any breakpoints in the target program or it'll | |
2385 | die when it hits one. */ | |
2386 | ||
2387 | static void | |
fba45db2 | 2388 | remote_detach (char *args, int from_tty) |
c906108c | 2389 | { |
d01949b6 AC |
2390 | struct remote_state *rs = get_remote_state (); |
2391 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2392 | |
2393 | if (args) | |
2394 | error ("Argument given to \"detach\" when remotely debugging."); | |
2395 | ||
2396 | /* Tell the remote target to detach. */ | |
2397 | strcpy (buf, "D"); | |
d01949b6 | 2398 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 2399 | |
cca728d0 | 2400 | target_mourn_inferior (); |
c906108c SS |
2401 | if (from_tty) |
2402 | puts_filtered ("Ending remote debugging.\n"); | |
96baa820 | 2403 | |
c906108c SS |
2404 | } |
2405 | ||
43ff13b4 JM |
2406 | /* Same as remote_detach, but with async support. */ |
2407 | static void | |
fba45db2 | 2408 | remote_async_detach (char *args, int from_tty) |
43ff13b4 | 2409 | { |
d01949b6 AC |
2410 | struct remote_state *rs = get_remote_state (); |
2411 | char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
2412 | |
2413 | if (args) | |
2414 | error ("Argument given to \"detach\" when remotely debugging."); | |
2415 | ||
2416 | /* Tell the remote target to detach. */ | |
2417 | strcpy (buf, "D"); | |
d01949b6 | 2418 | remote_send (buf, (rs->remote_packet_size)); |
43ff13b4 JM |
2419 | |
2420 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 2421 | if (target_is_async_p ()) |
2cd58942 | 2422 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2423 | |
cca728d0 | 2424 | target_mourn_inferior (); |
43ff13b4 JM |
2425 | if (from_tty) |
2426 | puts_filtered ("Ending remote debugging.\n"); | |
2427 | } | |
2428 | ||
c906108c SS |
2429 | /* Convert hex digit A to a number. */ |
2430 | ||
30559e10 | 2431 | static int |
fba45db2 | 2432 | fromhex (int a) |
c906108c SS |
2433 | { |
2434 | if (a >= '0' && a <= '9') | |
2435 | return a - '0'; | |
2436 | else if (a >= 'a' && a <= 'f') | |
2437 | return a - 'a' + 10; | |
2438 | else if (a >= 'A' && a <= 'F') | |
2439 | return a - 'A' + 10; | |
c5aa993b | 2440 | else |
c906108c SS |
2441 | error ("Reply contains invalid hex digit %d", a); |
2442 | } | |
2443 | ||
30559e10 MS |
2444 | static int |
2445 | hex2bin (const char *hex, char *bin, int count) | |
2446 | { | |
2447 | int i; | |
2448 | ||
30559e10 MS |
2449 | for (i = 0; i < count; i++) |
2450 | { | |
2451 | if (hex[0] == 0 || hex[1] == 0) | |
2452 | { | |
2453 | /* Hex string is short, or of uneven length. | |
2454 | Return the count that has been converted so far. */ | |
2455 | return i; | |
2456 | } | |
2457 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2458 | hex += 2; | |
2459 | } | |
2460 | return i; | |
2461 | } | |
2462 | ||
c906108c SS |
2463 | /* Convert number NIB to a hex digit. */ |
2464 | ||
2465 | static int | |
fba45db2 | 2466 | tohex (int nib) |
c906108c SS |
2467 | { |
2468 | if (nib < 10) | |
c5aa993b | 2469 | return '0' + nib; |
c906108c | 2470 | else |
c5aa993b | 2471 | return 'a' + nib - 10; |
c906108c | 2472 | } |
30559e10 MS |
2473 | |
2474 | static int | |
234fa6d1 | 2475 | bin2hex (const char *bin, char *hex, int count) |
30559e10 MS |
2476 | { |
2477 | int i; | |
2478 | /* May use a length, or a nul-terminated string as input. */ | |
2479 | if (count == 0) | |
2480 | count = strlen (bin); | |
2481 | ||
2482 | for (i = 0; i < count; i++) | |
2483 | { | |
2484 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2485 | *hex++ = tohex (*bin++ & 0xf); | |
2486 | } | |
2487 | *hex = 0; | |
2488 | return i; | |
2489 | } | |
c906108c SS |
2490 | \f |
2491 | /* Tell the remote machine to resume. */ | |
2492 | ||
2493 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2494 | ||
2495 | static int last_sent_step; | |
2496 | ||
2497 | static void | |
39f77062 | 2498 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
c906108c | 2499 | { |
d01949b6 AC |
2500 | struct remote_state *rs = get_remote_state (); |
2501 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2502 | int pid = PIDGET (ptid); |
44eaed12 | 2503 | char *p; |
c906108c SS |
2504 | |
2505 | if (pid == -1) | |
2506 | set_thread (0, 0); /* run any thread */ | |
2507 | else | |
2508 | set_thread (pid, 0); /* run this thread */ | |
2509 | ||
c906108c SS |
2510 | last_sent_signal = siggnal; |
2511 | last_sent_step = step; | |
2512 | ||
2513 | /* A hook for when we need to do something at the last moment before | |
2514 | resumption. */ | |
2515 | if (target_resume_hook) | |
2516 | (*target_resume_hook) (); | |
2517 | ||
44eaed12 C |
2518 | |
2519 | /* The s/S/c/C packets do not return status. So if the target does | |
2520 | not support the S or C packets, the debug agent returns an empty | |
2521 | string which is detected in remote_wait(). This protocol defect | |
2522 | is fixed in the e/E packets. */ | |
2523 | ||
2524 | if (step && step_range_end) | |
2525 | { | |
2526 | /* If the target does not support the 'E' packet, we try the 'S' | |
2527 | packet. Ideally we would fall back to the 'e' packet if that | |
2528 | too is not supported. But that would require another copy of | |
2529 | the code to issue the 'e' packet (and fall back to 's' if not | |
2530 | supported) in remote_wait(). */ | |
2531 | ||
2532 | if (siggnal != TARGET_SIGNAL_0) | |
2533 | { | |
2534 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2535 | { | |
2536 | p = buf; | |
2537 | *p++ = 'E'; | |
2538 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2539 | *p++ = tohex (((int) siggnal) & 0xf); | |
2540 | *p++ = ','; | |
2541 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2542 | *p++ = ','; | |
2543 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2544 | *p++ = 0; | |
2545 | ||
2546 | putpkt (buf); | |
d01949b6 | 2547 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2548 | |
234fa6d1 | 2549 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2550 | return; |
2551 | } | |
2552 | } | |
2553 | else | |
2554 | { | |
2555 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2556 | { | |
2557 | p = buf; | |
2558 | *p++ = 'e'; | |
2559 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2560 | *p++ = ','; | |
2561 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2562 | *p++ = 0; | |
2563 | ||
2564 | putpkt (buf); | |
d01949b6 | 2565 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2566 | |
234fa6d1 | 2567 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2568 | return; |
2569 | } | |
2570 | } | |
2571 | } | |
2572 | ||
c906108c SS |
2573 | if (siggnal != TARGET_SIGNAL_0) |
2574 | { | |
2575 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2576 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
44eaed12 | 2577 | buf[2] = tohex (((int) siggnal) & 0xf); |
c906108c SS |
2578 | buf[3] = '\0'; |
2579 | } | |
2580 | else | |
c5aa993b | 2581 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2582 | |
2583 | putpkt (buf); | |
2584 | } | |
43ff13b4 JM |
2585 | |
2586 | /* Same as remote_resume, but with async support. */ | |
2587 | static void | |
39f77062 | 2588 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2589 | { |
d01949b6 AC |
2590 | struct remote_state *rs = get_remote_state (); |
2591 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2592 | int pid = PIDGET (ptid); |
44eaed12 | 2593 | char *p; |
43ff13b4 JM |
2594 | |
2595 | if (pid == -1) | |
2596 | set_thread (0, 0); /* run any thread */ | |
2597 | else | |
2598 | set_thread (pid, 0); /* run this thread */ | |
2599 | ||
43ff13b4 JM |
2600 | last_sent_signal = siggnal; |
2601 | last_sent_step = step; | |
2602 | ||
2603 | /* A hook for when we need to do something at the last moment before | |
2604 | resumption. */ | |
2605 | if (target_resume_hook) | |
2606 | (*target_resume_hook) (); | |
2607 | ||
44eaed12 C |
2608 | /* The s/S/c/C packets do not return status. So if the target does |
2609 | not support the S or C packets, the debug agent returns an empty | |
2610 | string which is detected in remote_wait(). This protocol defect | |
2611 | is fixed in the e/E packets. */ | |
2612 | ||
2613 | if (step && step_range_end) | |
2614 | { | |
2615 | /* If the target does not support the 'E' packet, we try the 'S' | |
2616 | packet. Ideally we would fall back to the 'e' packet if that | |
2617 | too is not supported. But that would require another copy of | |
2618 | the code to issue the 'e' packet (and fall back to 's' if not | |
2619 | supported) in remote_wait(). */ | |
2620 | ||
2621 | if (siggnal != TARGET_SIGNAL_0) | |
2622 | { | |
2623 | if (remote_protocol_E.support != PACKET_DISABLE) | |
2624 | { | |
2625 | p = buf; | |
2626 | *p++ = 'E'; | |
2627 | *p++ = tohex (((int) siggnal >> 4) & 0xf); | |
2628 | *p++ = tohex (((int) siggnal) & 0xf); | |
2629 | *p++ = ','; | |
2630 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2631 | *p++ = ','; | |
2632 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2633 | *p++ = 0; | |
2634 | ||
2635 | putpkt (buf); | |
d01949b6 | 2636 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2637 | |
234fa6d1 | 2638 | if (packet_ok (buf, &remote_protocol_E) == PACKET_OK) |
44eaed12 C |
2639 | goto register_event_loop; |
2640 | } | |
2641 | } | |
2642 | else | |
2643 | { | |
2644 | if (remote_protocol_e.support != PACKET_DISABLE) | |
2645 | { | |
2646 | p = buf; | |
2647 | *p++ = 'e'; | |
2648 | p += hexnumstr (p, (ULONGEST) step_range_start); | |
2649 | *p++ = ','; | |
2650 | p += hexnumstr (p, (ULONGEST) step_range_end); | |
2651 | *p++ = 0; | |
2652 | ||
2653 | putpkt (buf); | |
d01949b6 | 2654 | getpkt (buf, (rs->remote_packet_size), 0); |
44eaed12 | 2655 | |
234fa6d1 | 2656 | if (packet_ok (buf, &remote_protocol_e) == PACKET_OK) |
44eaed12 C |
2657 | goto register_event_loop; |
2658 | } | |
2659 | } | |
2660 | } | |
2661 | ||
43ff13b4 JM |
2662 | if (siggnal != TARGET_SIGNAL_0) |
2663 | { | |
2664 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2665 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2666 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2667 | buf[3] = '\0'; |
2668 | } | |
2669 | else | |
c5aa993b | 2670 | strcpy (buf, step ? "s" : "c"); |
44eaed12 C |
2671 | |
2672 | putpkt (buf); | |
43ff13b4 | 2673 | |
44eaed12 | 2674 | register_event_loop: |
2acceee2 JM |
2675 | /* We are about to start executing the inferior, let's register it |
2676 | with the event loop. NOTE: this is the one place where all the | |
2677 | execution commands end up. We could alternatively do this in each | |
2678 | of the execution commands in infcmd.c.*/ | |
2679 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here | |
2680 | into infcmd.c in order to allow inferior function calls to work | |
2681 | NOT asynchronously. */ | |
ed9a39eb | 2682 | if (event_loop_p && target_can_async_p ()) |
2acceee2 JM |
2683 | target_async (inferior_event_handler, 0); |
2684 | /* Tell the world that the target is now executing. */ | |
2685 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set | |
2686 | this? Instead, should the client of target just assume (for | |
2687 | async targets) that the target is going to start executing? Is | |
2688 | this information already found in the continuation block? */ | |
ed9a39eb | 2689 | if (target_is_async_p ()) |
2acceee2 | 2690 | target_executing = 1; |
43ff13b4 | 2691 | } |
c906108c | 2692 | \f |
43ff13b4 JM |
2693 | |
2694 | /* Set up the signal handler for SIGINT, while the target is | |
2695 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2696 | static void | |
fba45db2 | 2697 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2698 | { |
c5aa993b | 2699 | sigint_remote_token = |
43ff13b4 JM |
2700 | create_async_signal_handler (async_remote_interrupt, NULL); |
2701 | signal (SIGINT, handle_remote_sigint); | |
2702 | } | |
2703 | ||
2704 | /* Signal handler for SIGINT, while the target is executing. */ | |
2705 | static void | |
fba45db2 | 2706 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2707 | { |
2708 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2709 | sigint_remote_twice_token = |
43ff13b4 JM |
2710 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2711 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2712 | } | |
2713 | ||
2714 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2715 | sent once. It will take effect the second time that the user sends | |
2716 | a ^C. */ | |
2717 | static void | |
fba45db2 | 2718 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2719 | { |
2720 | signal (sig, handle_sigint); | |
c5aa993b | 2721 | sigint_remote_twice_token = |
2df3850c | 2722 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2723 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2724 | } | |
2725 | ||
6426a772 | 2726 | /* Perform the real interruption of the target execution, in response |
43ff13b4 | 2727 | to a ^C. */ |
c5aa993b | 2728 | static void |
fba45db2 | 2729 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2730 | { |
2731 | if (remote_debug) | |
2732 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2733 | ||
2734 | target_stop (); | |
2735 | } | |
2736 | ||
2737 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2738 | up on the target alltogether. */ | |
2df3850c | 2739 | void |
fba45db2 | 2740 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2741 | { |
2df3850c JM |
2742 | if (remote_debug) |
2743 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 JM |
2744 | /* Do something only if the target was not killed by the previous |
2745 | cntl-C. */ | |
2746 | if (target_executing) | |
2747 | { | |
2748 | interrupt_query (); | |
2749 | signal (SIGINT, handle_remote_sigint); | |
2750 | } | |
43ff13b4 JM |
2751 | } |
2752 | ||
2753 | /* Reinstall the usual SIGINT handlers, after the target has | |
2754 | stopped. */ | |
6426a772 JM |
2755 | static void |
2756 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2757 | { |
2758 | signal (SIGINT, handle_sigint); | |
2759 | if (sigint_remote_twice_token) | |
c2c6d25f | 2760 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2761 | if (sigint_remote_token) |
c2c6d25f | 2762 | delete_async_signal_handler ((struct async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2763 | } |
2764 | ||
c906108c SS |
2765 | /* Send ^C to target to halt it. Target will respond, and send us a |
2766 | packet. */ | |
507f3c78 | 2767 | static void (*ofunc) (int); |
c906108c | 2768 | |
7a292a7a SS |
2769 | /* The command line interface's stop routine. This function is installed |
2770 | as a signal handler for SIGINT. The first time a user requests a | |
2771 | stop, we call remote_stop to send a break or ^C. If there is no | |
2772 | response from the target (it didn't stop when the user requested it), | |
2773 | we ask the user if he'd like to detach from the target. */ | |
c906108c | 2774 | static void |
fba45db2 | 2775 | remote_interrupt (int signo) |
c906108c | 2776 | { |
7a292a7a SS |
2777 | /* If this doesn't work, try more severe steps. */ |
2778 | signal (signo, remote_interrupt_twice); | |
2779 | ||
2780 | if (remote_debug) | |
0f71a2f6 | 2781 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2782 | |
2783 | target_stop (); | |
2784 | } | |
2785 | ||
2786 | /* The user typed ^C twice. */ | |
2787 | ||
2788 | static void | |
fba45db2 | 2789 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2790 | { |
2791 | signal (signo, ofunc); | |
2792 | interrupt_query (); | |
c906108c SS |
2793 | signal (signo, remote_interrupt); |
2794 | } | |
7a292a7a SS |
2795 | |
2796 | /* This is the generic stop called via the target vector. When a target | |
2797 | interrupt is requested, either by the command line or the GUI, we | |
2798 | will eventually end up here. */ | |
c906108c | 2799 | static void |
fba45db2 | 2800 | remote_stop (void) |
c906108c | 2801 | { |
7a292a7a SS |
2802 | /* Send a break or a ^C, depending on user preference. */ |
2803 | if (remote_debug) | |
0f71a2f6 | 2804 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2805 | |
7a292a7a | 2806 | if (remote_break) |
2cd58942 | 2807 | serial_send_break (remote_desc); |
c906108c | 2808 | else |
2cd58942 | 2809 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2810 | } |
2811 | ||
2812 | /* Ask the user what to do when an interrupt is received. */ | |
2813 | ||
2814 | static void | |
fba45db2 | 2815 | interrupt_query (void) |
c906108c SS |
2816 | { |
2817 | target_terminal_ours (); | |
2818 | ||
2819 | if (query ("Interrupted while waiting for the program.\n\ | |
2820 | Give up (and stop debugging it)? ")) | |
2821 | { | |
2822 | target_mourn_inferior (); | |
2823 | return_to_top_level (RETURN_QUIT); | |
2824 | } | |
2825 | ||
2826 | target_terminal_inferior (); | |
2827 | } | |
2828 | ||
6426a772 JM |
2829 | /* Enable/disable target terminal ownership. Most targets can use |
2830 | terminal groups to control terminal ownership. Remote targets are | |
2831 | different in that explicit transfer of ownership to/from GDB/target | |
2832 | is required. */ | |
2833 | ||
2834 | static void | |
2835 | remote_async_terminal_inferior (void) | |
2836 | { | |
2837 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2838 | sync_execution here. This function should only be called when | |
2839 | GDB is resuming the inferior in the forground. A background | |
2840 | resume (``run&'') should leave GDB in control of the terminal and | |
2841 | consequently should not call this code. */ | |
2842 | if (!sync_execution) | |
2843 | return; | |
2844 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2845 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2846 | to an asynchronous target with a synchronous command calls this | |
2847 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2848 | stops trying to transfer the terminal to the target when it | |
2849 | shouldn't this guard can go away. */ | |
2850 | if (!remote_async_terminal_ours_p) | |
2851 | return; | |
2852 | delete_file_handler (input_fd); | |
2853 | remote_async_terminal_ours_p = 0; | |
2854 | initialize_sigint_signal_handler (); | |
2855 | /* NOTE: At this point we could also register our selves as the | |
2856 | recipient of all input. Any characters typed could then be | |
2857 | passed on down to the target. */ | |
2858 | } | |
2859 | ||
2860 | static void | |
2861 | remote_async_terminal_ours (void) | |
2862 | { | |
2863 | /* See FIXME in remote_async_terminal_inferior. */ | |
2864 | if (!sync_execution) | |
2865 | return; | |
2866 | /* See FIXME in remote_async_terminal_inferior. */ | |
2867 | if (remote_async_terminal_ours_p) | |
2868 | return; | |
2869 | cleanup_sigint_signal_handler (NULL); | |
2870 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2871 | remote_async_terminal_ours_p = 1; | |
2872 | } | |
2873 | ||
c906108c SS |
2874 | /* If nonzero, ignore the next kill. */ |
2875 | ||
2876 | int kill_kludge; | |
2877 | ||
2878 | void | |
917317f4 | 2879 | remote_console_output (char *msg) |
c906108c SS |
2880 | { |
2881 | char *p; | |
2882 | ||
c5aa993b | 2883 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2884 | { |
2885 | char tb[2]; | |
2886 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2887 | tb[0] = c; | |
2888 | tb[1] = 0; | |
43ff13b4 | 2889 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2890 | } |
917317f4 | 2891 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2892 | } |
2893 | ||
0f71a2f6 JM |
2894 | /* Wait until the remote machine stops, then return, |
2895 | storing status in STATUS just as `wait' would. | |
2896 | Returns "pid", which in the case of a multi-threaded | |
2897 | remote OS, is the thread-id. */ | |
c906108c | 2898 | |
39f77062 KB |
2899 | static ptid_t |
2900 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2901 | { |
d01949b6 AC |
2902 | struct remote_state *rs = get_remote_state (); |
2903 | unsigned char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2904 | int thread_num = -1; |
2905 | ||
2906 | status->kind = TARGET_WAITKIND_EXITED; | |
2907 | status->value.integer = 0; | |
2908 | ||
2909 | while (1) | |
2910 | { | |
2911 | unsigned char *p; | |
2912 | ||
c906108c | 2913 | ofunc = signal (SIGINT, remote_interrupt); |
d01949b6 | 2914 | getpkt (buf, (rs->remote_packet_size), 1); |
c906108c SS |
2915 | signal (SIGINT, ofunc); |
2916 | ||
2917 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2918 | collection of trace data) every time the target stops. */ |
c906108c SS |
2919 | if (target_wait_loop_hook) |
2920 | (*target_wait_loop_hook) (); | |
2921 | ||
2922 | switch (buf[0]) | |
2923 | { | |
2924 | case 'E': /* Error of some sort */ | |
2925 | warning ("Remote failure reply: %s", buf); | |
2926 | continue; | |
2927 | case 'T': /* Status with PC, SP, FP, ... */ | |
2928 | { | |
2929 | int i; | |
2930 | long regno; | |
e6cbd02a | 2931 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
c906108c SS |
2932 | |
2933 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2934 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2935 | ss = signal number |
2936 | n... = register number | |
2937 | r... = register contents | |
2938 | */ | |
c906108c SS |
2939 | p = &buf[3]; /* after Txx */ |
2940 | ||
2941 | while (*p) | |
2942 | { | |
2943 | unsigned char *p1; | |
2944 | char *p_temp; | |
97345198 | 2945 | int fieldsize; |
c906108c SS |
2946 | |
2947 | /* Read the register number */ | |
2948 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2949 | p1 = (unsigned char *) p_temp; |
c906108c | 2950 | |
c5aa993b | 2951 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2952 | { |
2953 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2954 | if (p1 == NULL) | |
2955 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2956 | Packet: '%s'\n", | |
2957 | p, buf); | |
2958 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2959 | { | |
2960 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2961 | record_currthread (thread_num); | |
2962 | p = (unsigned char *) p_temp; | |
2963 | } | |
2964 | } | |
2965 | else | |
2966 | { | |
2967 | p = p1; | |
2968 | ||
2969 | if (*p++ != ':') | |
2970 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2971 | Packet: '%s'\n", | |
2972 | p, buf); | |
2973 | ||
2974 | if (regno >= NUM_REGS) | |
2975 | warning ("Remote sent bad register number %ld: %s\n\ | |
2976 | Packet: '%s'\n", | |
2977 | regno, p, buf); | |
2978 | ||
97345198 MS |
2979 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno)); |
2980 | p += 2 * fieldsize; | |
2981 | if (fieldsize < REGISTER_RAW_SIZE (regno)) | |
30559e10 | 2982 | warning ("Remote reply is too short: %s", buf); |
c906108c SS |
2983 | supply_register (regno, regs); |
2984 | } | |
2985 | ||
2986 | if (*p++ != ';') | |
2987 | { | |
2988 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2989 | warning (" here: %s", p); |
c906108c SS |
2990 | } |
2991 | } | |
2992 | } | |
2993 | /* fall through */ | |
2994 | case 'S': /* Old style status, just signal only */ | |
2995 | status->kind = TARGET_WAITKIND_STOPPED; | |
2996 | status->value.sig = (enum target_signal) | |
2997 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2998 | ||
0f71a2f6 JM |
2999 | if (buf[3] == 'p') |
3000 | { | |
3001 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3002 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3003 | |
3004 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3005 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3006 | value_from_string ("PDEBUG-")); |
3007 | cisco_kernel_mode = 0; | |
3008 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3009 | record_currthread (thread_num); | |
3010 | } | |
3011 | else if (buf[3] == 'k') | |
3012 | { | |
3013 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3014 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
3015 | |
3016 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3017 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
3018 | value_from_string ("KDEBUG-")); |
3019 | cisco_kernel_mode = 1; | |
3020 | } | |
c906108c | 3021 | goto got_status; |
0f71a2f6 JM |
3022 | case 'N': /* Cisco special: status and offsets */ |
3023 | { | |
3024 | bfd_vma text_addr, data_addr, bss_addr; | |
3025 | bfd_signed_vma text_off, data_off, bss_off; | |
3026 | unsigned char *p1; | |
3027 | ||
3028 | status->kind = TARGET_WAITKIND_STOPPED; | |
3029 | status->value.sig = (enum target_signal) | |
3030 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3031 | ||
c5aa993b | 3032 | if (symfile_objfile == NULL) |
0f71a2f6 | 3033 | { |
d4f3574e | 3034 | warning ("Relocation packet received with no symbol file. \ |
0f71a2f6 JM |
3035 | Packet Dropped"); |
3036 | goto got_status; | |
3037 | } | |
3038 | ||
3039 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3040 | * where AA is the signal number, TT is the new text | |
3041 | * address, DD * is the new data address, and BB is the | |
3042 | * new bss address. */ | |
3043 | ||
3044 | p = &buf[3]; | |
3045 | text_addr = strtoul (p, (char **) &p1, 16); | |
3046 | if (p1 == p || *p1 != ';') | |
3047 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3048 | p = p1 + 1; | |
3049 | data_addr = strtoul (p, (char **) &p1, 16); | |
3050 | if (p1 == p || *p1 != ';') | |
3051 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3052 | p = p1 + 1; | |
3053 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3054 | if (p1 == p) |
0f71a2f6 JM |
3055 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3056 | ||
3057 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3058 | &text_off, &data_off, &bss_off) | |
3059 | == 0) | |
c5aa993b | 3060 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
3061 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3062 | ||
3063 | goto got_status; | |
3064 | } | |
c906108c SS |
3065 | case 'W': /* Target exited */ |
3066 | { | |
3067 | /* The remote process exited. */ | |
3068 | status->kind = TARGET_WAITKIND_EXITED; | |
3069 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3070 | goto got_status; | |
3071 | } | |
3072 | case 'X': | |
3073 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3074 | status->value.sig = (enum target_signal) | |
3075 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3076 | kill_kludge = 1; | |
3077 | ||
3078 | goto got_status; | |
3079 | case 'O': /* Console output */ | |
3080 | remote_console_output (buf + 1); | |
3081 | continue; | |
3082 | case '\0': | |
3083 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3084 | { | |
3085 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3086 | the remote system doesn't support it. */ |
c906108c SS |
3087 | target_terminal_ours_for_output (); |
3088 | printf_filtered | |
3089 | ("Can't send signals to this remote system. %s not sent.\n", | |
3090 | target_signal_to_name (last_sent_signal)); | |
3091 | last_sent_signal = TARGET_SIGNAL_0; | |
3092 | target_terminal_inferior (); | |
3093 | ||
3094 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3095 | putpkt ((char *) buf); | |
3096 | continue; | |
3097 | } | |
3098 | /* else fallthrough */ | |
3099 | default: | |
3100 | warning ("Invalid remote reply: %s", buf); | |
3101 | continue; | |
3102 | } | |
3103 | } | |
c5aa993b | 3104 | got_status: |
c906108c SS |
3105 | if (thread_num != -1) |
3106 | { | |
39f77062 | 3107 | return pid_to_ptid (thread_num); |
c906108c | 3108 | } |
39f77062 | 3109 | return inferior_ptid; |
c906108c SS |
3110 | } |
3111 | ||
43ff13b4 | 3112 | /* Async version of remote_wait. */ |
39f77062 KB |
3113 | static ptid_t |
3114 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3115 | { |
d01949b6 AC |
3116 | struct remote_state *rs = get_remote_state (); |
3117 | unsigned char *buf = alloca (rs->remote_packet_size); | |
43ff13b4 JM |
3118 | int thread_num = -1; |
3119 | ||
3120 | status->kind = TARGET_WAITKIND_EXITED; | |
3121 | status->value.integer = 0; | |
3122 | ||
3123 | while (1) | |
3124 | { | |
3125 | unsigned char *p; | |
c5aa993b | 3126 | |
ed9a39eb | 3127 | if (!target_is_async_p ()) |
43ff13b4 | 3128 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3129 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3130 | _never_ wait for ever -> test on target_is_async_p(). | |
3131 | However, before we do that we need to ensure that the caller | |
3132 | knows how to take the target into/out of async mode. */ | |
d01949b6 | 3133 | getpkt (buf, (rs->remote_packet_size), wait_forever_enabled_p); |
ed9a39eb | 3134 | if (!target_is_async_p ()) |
43ff13b4 JM |
3135 | signal (SIGINT, ofunc); |
3136 | ||
3137 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3138 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
3139 | if (target_wait_loop_hook) |
3140 | (*target_wait_loop_hook) (); | |
3141 | ||
3142 | switch (buf[0]) | |
3143 | { | |
3144 | case 'E': /* Error of some sort */ | |
3145 | warning ("Remote failure reply: %s", buf); | |
3146 | continue; | |
3147 | case 'T': /* Status with PC, SP, FP, ... */ | |
3148 | { | |
3149 | int i; | |
3150 | long regno; | |
e6cbd02a | 3151 | char* regs = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
43ff13b4 JM |
3152 | |
3153 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
3154 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
3155 | ss = signal number |
3156 | n... = register number | |
3157 | r... = register contents | |
3158 | */ | |
43ff13b4 JM |
3159 | p = &buf[3]; /* after Txx */ |
3160 | ||
3161 | while (*p) | |
3162 | { | |
3163 | unsigned char *p1; | |
3164 | char *p_temp; | |
6c3f2dbf | 3165 | int fieldsize; |
43ff13b4 JM |
3166 | |
3167 | /* Read the register number */ | |
3168 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 3169 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 3170 | |
c5aa993b | 3171 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
3172 | { |
3173 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
3174 | if (p1 == NULL) | |
3175 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
3176 | Packet: '%s'\n", | |
3177 | p, buf); | |
3178 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
3179 | { | |
3180 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3181 | record_currthread (thread_num); | |
3182 | p = (unsigned char *) p_temp; | |
3183 | } | |
3184 | } | |
3185 | else | |
3186 | { | |
3187 | p = p1; | |
3188 | ||
3189 | if (*p++ != ':') | |
3190 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
3191 | Packet: '%s'\n", | |
3192 | p, buf); | |
3193 | ||
3194 | if (regno >= NUM_REGS) | |
3195 | warning ("Remote sent bad register number %ld: %s\n\ | |
3196 | Packet: '%s'\n", | |
3197 | regno, p, buf); | |
3198 | ||
6c3f2dbf MS |
3199 | fieldsize = hex2bin (p, regs, REGISTER_RAW_SIZE (regno)); |
3200 | p += 2 * fieldsize; | |
3201 | if (fieldsize < REGISTER_RAW_SIZE (regno)) | |
30559e10 | 3202 | warning ("Remote reply is too short: %s", buf); |
43ff13b4 JM |
3203 | supply_register (regno, regs); |
3204 | } | |
3205 | ||
3206 | if (*p++ != ';') | |
3207 | { | |
3208 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 3209 | warning (" here: %s", p); |
43ff13b4 JM |
3210 | } |
3211 | } | |
3212 | } | |
3213 | /* fall through */ | |
3214 | case 'S': /* Old style status, just signal only */ | |
3215 | status->kind = TARGET_WAITKIND_STOPPED; | |
3216 | status->value.sig = (enum target_signal) | |
3217 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3218 | ||
3219 | if (buf[3] == 'p') | |
3220 | { | |
3221 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3222 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3223 | |
3224 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3225 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3226 | value_from_string ("PDEBUG-")); |
3227 | cisco_kernel_mode = 0; | |
3228 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
3229 | record_currthread (thread_num); | |
3230 | } | |
3231 | else if (buf[3] == 'k') | |
3232 | { | |
3233 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 3234 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
3235 | |
3236 | if (cisco_kernel_mode == 1) | |
c5aa993b | 3237 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
3238 | value_from_string ("KDEBUG-")); |
3239 | cisco_kernel_mode = 1; | |
3240 | } | |
3241 | goto got_status; | |
3242 | case 'N': /* Cisco special: status and offsets */ | |
3243 | { | |
3244 | bfd_vma text_addr, data_addr, bss_addr; | |
3245 | bfd_signed_vma text_off, data_off, bss_off; | |
3246 | unsigned char *p1; | |
3247 | ||
3248 | status->kind = TARGET_WAITKIND_STOPPED; | |
3249 | status->value.sig = (enum target_signal) | |
3250 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3251 | ||
c5aa993b | 3252 | if (symfile_objfile == NULL) |
43ff13b4 JM |
3253 | { |
3254 | warning ("Relocation packet recieved with no symbol file. \ | |
3255 | Packet Dropped"); | |
3256 | goto got_status; | |
3257 | } | |
3258 | ||
3259 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
3260 | * where AA is the signal number, TT is the new text | |
3261 | * address, DD * is the new data address, and BB is the | |
3262 | * new bss address. */ | |
3263 | ||
3264 | p = &buf[3]; | |
3265 | text_addr = strtoul (p, (char **) &p1, 16); | |
3266 | if (p1 == p || *p1 != ';') | |
3267 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3268 | p = p1 + 1; | |
3269 | data_addr = strtoul (p, (char **) &p1, 16); | |
3270 | if (p1 == p || *p1 != ';') | |
3271 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
3272 | p = p1 + 1; | |
3273 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 3274 | if (p1 == p) |
43ff13b4 JM |
3275 | warning ("Malformed relocation packet: Packet '%s'", buf); |
3276 | ||
3277 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
3278 | &text_off, &data_off, &bss_off) | |
3279 | == 0) | |
c5aa993b | 3280 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
3281 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
3282 | ||
3283 | goto got_status; | |
3284 | } | |
3285 | case 'W': /* Target exited */ | |
3286 | { | |
3287 | /* The remote process exited. */ | |
3288 | status->kind = TARGET_WAITKIND_EXITED; | |
3289 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3290 | goto got_status; | |
3291 | } | |
3292 | case 'X': | |
3293 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3294 | status->value.sig = (enum target_signal) | |
3295 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3296 | kill_kludge = 1; | |
3297 | ||
3298 | goto got_status; | |
3299 | case 'O': /* Console output */ | |
3300 | remote_console_output (buf + 1); | |
c4093a6a JM |
3301 | /* Return immediately to the event loop. The event loop will |
3302 | still be waiting on the inferior afterwards. */ | |
3303 | status->kind = TARGET_WAITKIND_IGNORE; | |
3304 | goto got_status; | |
43ff13b4 JM |
3305 | case '\0': |
3306 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3307 | { | |
3308 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3309 | the remote system doesn't support it. */ |
43ff13b4 JM |
3310 | target_terminal_ours_for_output (); |
3311 | printf_filtered | |
3312 | ("Can't send signals to this remote system. %s not sent.\n", | |
3313 | target_signal_to_name (last_sent_signal)); | |
3314 | last_sent_signal = TARGET_SIGNAL_0; | |
3315 | target_terminal_inferior (); | |
3316 | ||
3317 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3318 | putpkt ((char *) buf); | |
3319 | continue; | |
3320 | } | |
3321 | /* else fallthrough */ | |
3322 | default: | |
3323 | warning ("Invalid remote reply: %s", buf); | |
3324 | continue; | |
3325 | } | |
3326 | } | |
c5aa993b | 3327 | got_status: |
43ff13b4 JM |
3328 | if (thread_num != -1) |
3329 | { | |
39f77062 | 3330 | return pid_to_ptid (thread_num); |
43ff13b4 | 3331 | } |
39f77062 | 3332 | return inferior_ptid; |
43ff13b4 JM |
3333 | } |
3334 | ||
c906108c SS |
3335 | /* Number of bytes of registers this stub implements. */ |
3336 | ||
3337 | static int register_bytes_found; | |
3338 | ||
3339 | /* Read the remote registers into the block REGS. */ | |
3340 | /* Currently we just read all the registers, so we don't use regno. */ | |
3341 | ||
3342 | /* ARGSUSED */ | |
3343 | static void | |
fba45db2 | 3344 | remote_fetch_registers (int regno) |
c906108c | 3345 | { |
d01949b6 AC |
3346 | struct remote_state *rs = get_remote_state (); |
3347 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3348 | int i; |
3349 | char *p; | |
7302a204 | 3350 | char *regs = alloca (REGISTER_BYTES); |
c906108c | 3351 | |
39f77062 | 3352 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c SS |
3353 | |
3354 | sprintf (buf, "g"); | |
d01949b6 | 3355 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3356 | |
11cf8741 JM |
3357 | /* Save the size of the packet sent to us by the target. Its used |
3358 | as a heuristic when determining the max size of packets that the | |
3359 | target can safely receive. */ | |
d01949b6 AC |
3360 | if ((rs->actual_register_packet_size) == 0) |
3361 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3362 | |
3363 | /* Unimplemented registers read as all bits zero. */ | |
3364 | memset (regs, 0, REGISTER_BYTES); | |
3365 | ||
3366 | /* We can get out of synch in various cases. If the first character | |
3367 | in the buffer is not a hex character, assume that has happened | |
3368 | and try to fetch another packet to read. */ | |
3369 | while ((buf[0] < '0' || buf[0] > '9') | |
3370 | && (buf[0] < 'a' || buf[0] > 'f') | |
3371 | && buf[0] != 'x') /* New: unavailable register value */ | |
3372 | { | |
3373 | if (remote_debug) | |
0f71a2f6 JM |
3374 | fprintf_unfiltered (gdb_stdlog, |
3375 | "Bad register packet; fetching a new packet\n"); | |
d01949b6 | 3376 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3377 | } |
3378 | ||
3379 | /* Reply describes registers byte by byte, each byte encoded as two | |
3380 | hex characters. Suck them all up, then supply them to the | |
3381 | register cacheing/storage mechanism. */ | |
3382 | ||
3383 | p = buf; | |
3384 | for (i = 0; i < REGISTER_BYTES; i++) | |
3385 | { | |
3386 | if (p[0] == 0) | |
3387 | break; | |
3388 | if (p[1] == 0) | |
3389 | { | |
3390 | warning ("Remote reply is of odd length: %s", buf); | |
3391 | /* Don't change register_bytes_found in this case, and don't | |
3392 | print a second warning. */ | |
3393 | goto supply_them; | |
3394 | } | |
3395 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3396 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3397 | else |
3398 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3399 | p += 2; | |
3400 | } | |
3401 | ||
3402 | if (i != register_bytes_found) | |
3403 | { | |
3404 | register_bytes_found = i; | |
2649061d AC |
3405 | if (REGISTER_BYTES_OK_P () |
3406 | && !REGISTER_BYTES_OK (i)) | |
c906108c | 3407 | warning ("Remote reply is too short: %s", buf); |
c906108c | 3408 | } |
c5aa993b JM |
3409 | |
3410 | supply_them: | |
c906108c | 3411 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
3412 | { |
3413 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
3414 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
7302a204 | 3415 | set_register_cached (i, -1); |
c5aa993b | 3416 | } |
c906108c SS |
3417 | } |
3418 | ||
3419 | /* Prepare to store registers. Since we may send them all (using a | |
3420 | 'G' request), we have to read out the ones we don't want to change | |
3421 | first. */ | |
3422 | ||
c5aa993b | 3423 | static void |
fba45db2 | 3424 | remote_prepare_to_store (void) |
c906108c SS |
3425 | { |
3426 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
3427 | switch (remote_protocol_P.support) |
3428 | { | |
3429 | case PACKET_DISABLE: | |
3430 | case PACKET_SUPPORT_UNKNOWN: | |
3431 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
3432 | break; | |
3433 | case PACKET_ENABLE: | |
3434 | break; | |
3435 | } | |
3436 | } | |
3437 | ||
3438 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
3439 | packet was not recognized. */ | |
3440 | ||
3441 | static int | |
c2d11a7d | 3442 | store_register_using_P (int regno) |
5a2468f5 | 3443 | { |
d01949b6 | 3444 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 3445 | /* Try storing a single register. */ |
d01949b6 | 3446 | char *buf = alloca (rs->remote_packet_size); |
193cb69f | 3447 | char *regp = alloca (MAX_REGISTER_RAW_SIZE); |
5a2468f5 JM |
3448 | char *p; |
3449 | int i; | |
3450 | ||
3451 | sprintf (buf, "P%x=", regno); | |
3452 | p = buf + strlen (buf); | |
193cb69f | 3453 | regcache_collect (regno, regp); |
30559e10 | 3454 | bin2hex (regp, p, REGISTER_RAW_SIZE (regno)); |
d01949b6 | 3455 | remote_send (buf, (rs->remote_packet_size)); |
5a2468f5 JM |
3456 | |
3457 | return buf[0] != '\0'; | |
c906108c SS |
3458 | } |
3459 | ||
5a2468f5 | 3460 | |
c906108c | 3461 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
7302a204 | 3462 | of the register cache buffer. FIXME: ignores errors. */ |
c906108c SS |
3463 | |
3464 | static void | |
fba45db2 | 3465 | remote_store_registers (int regno) |
c906108c | 3466 | { |
d01949b6 | 3467 | struct remote_state *rs = get_remote_state (); |
193cb69f AC |
3468 | char *buf; |
3469 | char *regs; | |
c906108c SS |
3470 | int i; |
3471 | char *p; | |
3472 | ||
39f77062 | 3473 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3474 | |
5a2468f5 | 3475 | if (regno >= 0) |
c906108c | 3476 | { |
5a2468f5 | 3477 | switch (remote_protocol_P.support) |
c906108c | 3478 | { |
5a2468f5 JM |
3479 | case PACKET_DISABLE: |
3480 | break; | |
3481 | case PACKET_ENABLE: | |
3482 | if (store_register_using_P (regno)) | |
3483 | return; | |
3484 | else | |
3485 | error ("Protocol error: P packet not recognized by stub"); | |
3486 | case PACKET_SUPPORT_UNKNOWN: | |
3487 | if (store_register_using_P (regno)) | |
3488 | { | |
3489 | /* The stub recognized the 'P' packet. Remember this. */ | |
3490 | remote_protocol_P.support = PACKET_ENABLE; | |
3491 | return; | |
3492 | } | |
3493 | else | |
3494 | { | |
3495 | /* The stub does not support the 'P' packet. Use 'G' | |
3496 | instead, and don't try using 'P' in the future (it | |
3497 | will just waste our time). */ | |
3498 | remote_protocol_P.support = PACKET_DISABLE; | |
3499 | break; | |
3500 | } | |
c906108c | 3501 | } |
c906108c SS |
3502 | } |
3503 | ||
193cb69f AC |
3504 | /* Extract all the registers in the regcache copying them into a |
3505 | local buffer. */ | |
3506 | { | |
3507 | int i; | |
3508 | regs = alloca (REGISTER_BYTES); | |
3509 | memset (regs, REGISTER_BYTES, 0); | |
3510 | for (i = 0; i < NUM_REGS; i++) | |
3511 | { | |
3512 | regcache_collect (i, regs + REGISTER_BYTE (i)); | |
3513 | } | |
3514 | } | |
c906108c SS |
3515 | |
3516 | /* Command describes registers byte by byte, | |
3517 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3518 | buf = alloca (rs->remote_packet_size); |
3519 | p = buf; | |
3520 | *p++ = 'G'; | |
c906108c | 3521 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3522 | bin2hex (regs, p, register_bytes_found); |
d01949b6 | 3523 | remote_send (buf, (rs->remote_packet_size)); |
c906108c | 3524 | } |
c906108c SS |
3525 | \f |
3526 | ||
3527 | /* Return the number of hex digits in num. */ | |
3528 | ||
3529 | static int | |
fba45db2 | 3530 | hexnumlen (ULONGEST num) |
c906108c SS |
3531 | { |
3532 | int i; | |
3533 | ||
3534 | for (i = 0; num != 0; i++) | |
3535 | num >>= 4; | |
3536 | ||
3537 | return max (i, 1); | |
3538 | } | |
3539 | ||
2df3850c | 3540 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3541 | |
3542 | static int | |
fba45db2 | 3543 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3544 | { |
c906108c | 3545 | int len = hexnumlen (num); |
2df3850c JM |
3546 | return hexnumnstr (buf, num, len); |
3547 | } | |
3548 | ||
c906108c | 3549 | |
2df3850c | 3550 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3551 | |
2df3850c | 3552 | static int |
fba45db2 | 3553 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3554 | { |
3555 | int i; | |
3556 | ||
3557 | buf[width] = '\0'; | |
3558 | ||
3559 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3560 | { |
c5aa993b | 3561 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3562 | num >>= 4; |
3563 | } | |
3564 | ||
2df3850c | 3565 | return width; |
c906108c SS |
3566 | } |
3567 | ||
3568 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3569 | ||
3570 | static CORE_ADDR | |
fba45db2 | 3571 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3572 | { |
3573 | if (remote_address_size > 0 | |
3574 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3575 | { | |
3576 | /* Only create a mask when that mask can safely be constructed | |
3577 | in a ULONGEST variable. */ | |
3578 | ULONGEST mask = 1; | |
3579 | mask = (mask << remote_address_size) - 1; | |
3580 | addr &= mask; | |
3581 | } | |
3582 | return addr; | |
3583 | } | |
3584 | ||
3585 | /* Determine whether the remote target supports binary downloading. | |
3586 | This is accomplished by sending a no-op memory write of zero length | |
3587 | to the target at the specified address. It does not suffice to send | |
3588 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3589 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3590 | ||
96baa820 JM |
3591 | NOTE: This can still lose if the serial line is not eight-bit |
3592 | clean. In cases like this, the user should clear "remote | |
3593 | X-packet". */ | |
3594 | ||
c906108c | 3595 | static void |
fba45db2 | 3596 | check_binary_download (CORE_ADDR addr) |
c906108c | 3597 | { |
d01949b6 | 3598 | struct remote_state *rs = get_remote_state (); |
96baa820 | 3599 | switch (remote_protocol_binary_download.support) |
c906108c | 3600 | { |
96baa820 JM |
3601 | case PACKET_DISABLE: |
3602 | break; | |
3603 | case PACKET_ENABLE: | |
3604 | break; | |
3605 | case PACKET_SUPPORT_UNKNOWN: | |
3606 | { | |
d01949b6 | 3607 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
3608 | char *p; |
3609 | ||
3610 | p = buf; | |
3611 | *p++ = 'X'; | |
3612 | p += hexnumstr (p, (ULONGEST) addr); | |
3613 | *p++ = ','; | |
3614 | p += hexnumstr (p, (ULONGEST) 0); | |
3615 | *p++ = ':'; | |
3616 | *p = '\0'; | |
3617 | ||
3618 | putpkt_binary (buf, (int) (p - buf)); | |
d01949b6 | 3619 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c | 3620 | |
96baa820 JM |
3621 | if (buf[0] == '\0') |
3622 | { | |
3623 | if (remote_debug) | |
3624 | fprintf_unfiltered (gdb_stdlog, | |
3625 | "binary downloading NOT suppported by target\n"); | |
3626 | remote_protocol_binary_download.support = PACKET_DISABLE; | |
3627 | } | |
3628 | else | |
3629 | { | |
3630 | if (remote_debug) | |
3631 | fprintf_unfiltered (gdb_stdlog, | |
3632 | "binary downloading suppported by target\n"); | |
3633 | remote_protocol_binary_download.support = PACKET_ENABLE; | |
3634 | } | |
3635 | break; | |
3636 | } | |
c906108c SS |
3637 | } |
3638 | } | |
3639 | ||
3640 | /* Write memory data directly to the remote machine. | |
3641 | This does not inform the data cache; the data cache uses this. | |
3642 | MEMADDR is the address in the remote memory space. | |
3643 | MYADDR is the address of the buffer in our space. | |
3644 | LEN is the number of bytes. | |
3645 | ||
917317f4 JM |
3646 | Returns number of bytes transferred, or 0 (setting errno) for |
3647 | error. Only transfer a single packet. */ | |
c906108c SS |
3648 | |
3649 | static int | |
917317f4 | 3650 | remote_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3651 | { |
917317f4 | 3652 | unsigned char *buf; |
c906108c | 3653 | int max_buf_size; /* Max size of packet output buffer */ |
917317f4 JM |
3654 | unsigned char *p; |
3655 | unsigned char *plen; | |
c2d11a7d | 3656 | long sizeof_buf; |
917317f4 JM |
3657 | int plenlen; |
3658 | int todo; | |
3659 | int nr_bytes; | |
c906108c SS |
3660 | |
3661 | /* Verify that the target can support a binary download */ | |
3662 | check_binary_download (memaddr); | |
3663 | ||
917317f4 | 3664 | /* Determine the max packet size. */ |
11cf8741 | 3665 | max_buf_size = get_memory_write_packet_size (); |
c2d11a7d JM |
3666 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3667 | buf = alloca (sizeof_buf); | |
c906108c | 3668 | |
7a292a7a | 3669 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3670 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3671 | ||
917317f4 JM |
3672 | /* construct "M"<memaddr>","<len>":" */ |
3673 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3674 | p = buf; | |
3675 | ||
3676 | /* Append [XM]. Compute a best guess of the number of bytes | |
3677 | actually transfered. */ | |
3678 | switch (remote_protocol_binary_download.support) | |
c906108c | 3679 | { |
917317f4 JM |
3680 | case PACKET_ENABLE: |
3681 | *p++ = 'X'; | |
3682 | /* Best guess at number of bytes that will fit. */ | |
3683 | todo = min (len, max_buf_size); | |
3684 | break; | |
3685 | case PACKET_DISABLE: | |
3686 | *p++ = 'M'; | |
3687 | /* num bytes that will fit */ | |
3688 | todo = min (len, max_buf_size / 2); | |
3689 | break; | |
3690 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3691 | internal_error (__FILE__, __LINE__, |
3692 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3693 | default: |
8e65ff28 | 3694 | internal_error (__FILE__, __LINE__, "bad switch"); |
917317f4 JM |
3695 | } |
3696 | ||
3697 | /* Append <memaddr> */ | |
3698 | memaddr = remote_address_masked (memaddr); | |
3699 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3700 | *p++ = ','; | |
3701 | ||
3702 | /* Append <len>. Retain the location/size of <len>. It may | |
3703 | need to be adjusted once the packet body has been created. */ | |
3704 | plen = p; | |
3705 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3706 | p += plenlen; | |
3707 | *p++ = ':'; | |
3708 | *p = '\0'; | |
3709 | ||
3710 | /* Append the packet body. */ | |
3711 | switch (remote_protocol_binary_download.support) | |
3712 | { | |
3713 | case PACKET_ENABLE: | |
3714 | /* Binary mode. Send target system values byte by byte, in | |
3715 | increasing byte addresses. Only escape certain critical | |
3716 | characters. */ | |
3717 | for (nr_bytes = 0; | |
3718 | (nr_bytes < todo) && (p - buf) < (max_buf_size - 2); | |
3719 | nr_bytes++) | |
c906108c | 3720 | { |
917317f4 JM |
3721 | switch (myaddr[nr_bytes] & 0xff) |
3722 | { | |
3723 | case '$': | |
3724 | case '#': | |
3725 | case 0x7d: | |
3726 | /* These must be escaped */ | |
3727 | *p++ = 0x7d; | |
3728 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3729 | break; | |
3730 | default: | |
3731 | *p++ = myaddr[nr_bytes] & 0xff; | |
3732 | break; | |
3733 | } | |
c906108c | 3734 | } |
917317f4 | 3735 | if (nr_bytes < todo) |
c906108c | 3736 | { |
917317f4 JM |
3737 | /* Escape chars have filled up the buffer prematurely, |
3738 | and we have actually sent fewer bytes than planned. | |
3739 | Fix-up the length field of the packet. Use the same | |
3740 | number of characters as before. */ | |
3741 | ||
3742 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); | |
3743 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3744 | } |
917317f4 JM |
3745 | break; |
3746 | case PACKET_DISABLE: | |
3747 | /* Normal mode: Send target system values byte by byte, in | |
3748 | increasing byte addresses. Each byte is encoded as a two hex | |
3749 | value. */ | |
2644f393 | 3750 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3751 | p += 2 * nr_bytes; |
917317f4 JM |
3752 | break; |
3753 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 AC |
3754 | internal_error (__FILE__, __LINE__, |
3755 | "remote_write_bytes: bad internal state"); | |
7f7e9482 | 3756 | default: |
8e65ff28 | 3757 | internal_error (__FILE__, __LINE__, "bad switch"); |
c906108c | 3758 | } |
917317f4 JM |
3759 | |
3760 | putpkt_binary (buf, (int) (p - buf)); | |
c2d11a7d | 3761 | getpkt (buf, sizeof_buf, 0); |
917317f4 JM |
3762 | |
3763 | if (buf[0] == 'E') | |
3764 | { | |
3765 | /* There is no correspondance between what the remote protocol | |
3766 | uses for errors and errno codes. We would like a cleaner way | |
3767 | of representing errors (big enough to include errno codes, | |
3768 | bfd_error codes, and others). But for now just return EIO. */ | |
3769 | errno = EIO; | |
3770 | return 0; | |
3771 | } | |
3772 | ||
3773 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer | |
3774 | bytes than we'd planned. */ | |
3775 | return nr_bytes; | |
c906108c SS |
3776 | } |
3777 | ||
3778 | /* Read memory data directly from the remote machine. | |
3779 | This does not use the data cache; the data cache uses this. | |
3780 | MEMADDR is the address in the remote memory space. | |
3781 | MYADDR is the address of the buffer in our space. | |
3782 | LEN is the number of bytes. | |
3783 | ||
3784 | Returns number of bytes transferred, or 0 for error. */ | |
3785 | ||
917317f4 JM |
3786 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3787 | remote targets) shouldn't attempt to read the entire buffer. | |
3788 | Instead it should read a single packet worth of data and then | |
3789 | return the byte size of that packet to the caller. The caller (its | |
3790 | caller and its callers caller ;-) already contains code for | |
3791 | handling partial reads. */ | |
3792 | ||
c906108c | 3793 | static int |
fba45db2 | 3794 | remote_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 3795 | { |
11cf8741 | 3796 | char *buf; |
c906108c | 3797 | int max_buf_size; /* Max size of packet output buffer */ |
c2d11a7d | 3798 | long sizeof_buf; |
c906108c SS |
3799 | int origlen; |
3800 | ||
11cf8741 JM |
3801 | /* Create a buffer big enough for this packet. */ |
3802 | max_buf_size = get_memory_read_packet_size (); | |
c2d11a7d JM |
3803 | sizeof_buf = max_buf_size + 1; /* Space for trailing NUL */ |
3804 | buf = alloca (sizeof_buf); | |
c906108c SS |
3805 | |
3806 | origlen = len; | |
3807 | while (len > 0) | |
3808 | { | |
c906108c SS |
3809 | char *p; |
3810 | int todo; | |
3811 | int i; | |
3812 | ||
c5aa993b | 3813 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3814 | |
3815 | /* construct "m"<memaddr>","<len>" */ | |
3816 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3817 | memaddr = remote_address_masked (memaddr); | |
3818 | p = buf; | |
3819 | *p++ = 'm'; | |
3820 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3821 | *p++ = ','; | |
3822 | p += hexnumstr (p, (ULONGEST) todo); | |
3823 | *p = '\0'; | |
3824 | ||
3825 | putpkt (buf); | |
c2d11a7d | 3826 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3827 | |
3828 | if (buf[0] == 'E') | |
3829 | { | |
3830 | /* There is no correspondance between what the remote protocol uses | |
3831 | for errors and errno codes. We would like a cleaner way of | |
3832 | representing errors (big enough to include errno codes, bfd_error | |
3833 | codes, and others). But for now just return EIO. */ | |
3834 | errno = EIO; | |
3835 | return 0; | |
3836 | } | |
3837 | ||
c5aa993b JM |
3838 | /* Reply describes memory byte by byte, |
3839 | each byte encoded as two hex characters. */ | |
c906108c SS |
3840 | |
3841 | p = buf; | |
30559e10 | 3842 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3843 | { |
30559e10 MS |
3844 | /* Reply is short. This means that we were able to read |
3845 | only part of what we wanted to. */ | |
3846 | return i + (origlen - len); | |
c906108c SS |
3847 | } |
3848 | myaddr += todo; | |
3849 | memaddr += todo; | |
3850 | len -= todo; | |
3851 | } | |
3852 | return origlen; | |
3853 | } | |
3854 | \f | |
3855 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3856 | transferring to or from debugger address BUFFER. Write to inferior if |
3857 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
c338868a | 3858 | for error. TARGET is unused. */ |
392a587b | 3859 | |
c906108c SS |
3860 | /* ARGSUSED */ |
3861 | static int | |
c338868a | 3862 | remote_xfer_memory (CORE_ADDR mem_addr, char *buffer, int mem_len, |
29e57380 C |
3863 | int should_write, |
3864 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
3865 | struct target_ops *target) | |
c906108c | 3866 | { |
392a587b JM |
3867 | CORE_ADDR targ_addr; |
3868 | int targ_len; | |
4930751a C |
3869 | int res; |
3870 | ||
392a587b JM |
3871 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); |
3872 | if (targ_len <= 0) | |
c906108c | 3873 | return 0; |
c906108c | 3874 | |
4930751a C |
3875 | if (should_write) |
3876 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3877 | else | |
3878 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3879 | ||
3880 | return res; | |
c906108c SS |
3881 | } |
3882 | ||
c5aa993b | 3883 | |
c906108c SS |
3884 | #if 0 |
3885 | /* Enable after 4.12. */ | |
3886 | ||
3887 | void | |
c338868a KB |
3888 | remote_search (int len, char *data, char *mask, CORE_ADDR startaddr, |
3889 | int increment, CORE_ADDR lorange, CORE_ADDR hirange, | |
3890 | CORE_ADDR *addr_found, char *data_found) | |
c906108c SS |
3891 | { |
3892 | if (increment == -4 && len == 4) | |
3893 | { | |
3894 | long mask_long, data_long; | |
3895 | long data_found_long; | |
3896 | CORE_ADDR addr_we_found; | |
d01949b6 | 3897 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
3898 | long returned_long[2]; |
3899 | char *p; | |
3900 | ||
3901 | mask_long = extract_unsigned_integer (mask, len); | |
3902 | data_long = extract_unsigned_integer (data, len); | |
3903 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3904 | putpkt (buf); | |
d01949b6 | 3905 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
3906 | if (buf[0] == '\0') |
3907 | { | |
3908 | /* The stub doesn't support the 't' request. We might want to | |
3909 | remember this fact, but on the other hand the stub could be | |
3910 | switched on us. Maybe we should remember it only until | |
3911 | the next "target remote". */ | |
3912 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3913 | hirange, addr_found, data_found); | |
3914 | return; | |
3915 | } | |
3916 | ||
3917 | if (buf[0] == 'E') | |
3918 | /* There is no correspondance between what the remote protocol uses | |
3919 | for errors and errno codes. We would like a cleaner way of | |
3920 | representing errors (big enough to include errno codes, bfd_error | |
3921 | codes, and others). But for now just use EIO. */ | |
3922 | memory_error (EIO, startaddr); | |
3923 | p = buf; | |
3924 | addr_we_found = 0; | |
3925 | while (*p != '\0' && *p != ',') | |
3926 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3927 | if (*p == '\0') | |
3928 | error ("Protocol error: short return for search"); | |
3929 | ||
3930 | data_found_long = 0; | |
3931 | while (*p != '\0' && *p != ',') | |
3932 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3933 | /* Ignore anything after this comma, for future extensions. */ | |
3934 | ||
3935 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3936 | { | |
3937 | *addr_found = 0; | |
3938 | return; | |
3939 | } | |
3940 | ||
3941 | *addr_found = addr_we_found; | |
3942 | *data_found = store_unsigned_integer (data_we_found, len); | |
3943 | return; | |
3944 | } | |
3945 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3946 | hirange, addr_found, data_found); | |
3947 | } | |
3948 | #endif /* 0 */ | |
3949 | \f | |
3950 | static void | |
fba45db2 | 3951 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3952 | { |
3953 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3954 | } | |
3955 | \f | |
3956 | /* Stuff for dealing with the packets which are part of this protocol. | |
3957 | See comment at top of file for details. */ | |
3958 | ||
3959 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3960 | ||
3961 | static int | |
fba45db2 | 3962 | readchar (int timeout) |
c906108c SS |
3963 | { |
3964 | int ch; | |
3965 | ||
2cd58942 | 3966 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3967 | |
2acceee2 JM |
3968 | if (ch >= 0) |
3969 | return (ch & 0x7f); | |
3970 | ||
3971 | switch ((enum serial_rc) ch) | |
c906108c SS |
3972 | { |
3973 | case SERIAL_EOF: | |
2acceee2 | 3974 | target_mourn_inferior (); |
c906108c | 3975 | error ("Remote connection closed"); |
2acceee2 | 3976 | /* no return */ |
c906108c SS |
3977 | case SERIAL_ERROR: |
3978 | perror_with_name ("Remote communication error"); | |
2acceee2 | 3979 | /* no return */ |
c906108c | 3980 | case SERIAL_TIMEOUT: |
2acceee2 | 3981 | break; |
c906108c | 3982 | } |
2acceee2 | 3983 | return ch; |
c906108c SS |
3984 | } |
3985 | ||
3986 | /* Send the command in BUF to the remote machine, and read the reply | |
3987 | into BUF. Report an error if we get an error reply. */ | |
3988 | ||
3989 | static void | |
c2d11a7d JM |
3990 | remote_send (char *buf, |
3991 | long sizeof_buf) | |
c906108c SS |
3992 | { |
3993 | putpkt (buf); | |
c2d11a7d | 3994 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3995 | |
3996 | if (buf[0] == 'E') | |
3997 | error ("Remote failure reply: %s", buf); | |
3998 | } | |
3999 | ||
4000 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4001 | string notation. */ | |
4002 | ||
4003 | static void | |
fba45db2 | 4004 | print_packet (char *buf) |
c906108c SS |
4005 | { |
4006 | puts_filtered ("\""); | |
43e526b9 | 4007 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4008 | puts_filtered ("\""); |
4009 | } | |
4010 | ||
4011 | int | |
fba45db2 | 4012 | putpkt (char *buf) |
c906108c SS |
4013 | { |
4014 | return putpkt_binary (buf, strlen (buf)); | |
4015 | } | |
4016 | ||
4017 | /* Send a packet to the remote machine, with error checking. The data | |
d01949b6 | 4018 | of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5 |
c906108c SS |
4019 | to account for the $, # and checksum, and for a possible /0 if we are |
4020 | debugging (remote_debug) and want to print the sent packet as a string */ | |
4021 | ||
4022 | static int | |
fba45db2 | 4023 | putpkt_binary (char *buf, int cnt) |
c906108c | 4024 | { |
d01949b6 | 4025 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4026 | int i; |
4027 | unsigned char csum = 0; | |
11cf8741 | 4028 | char *buf2 = alloca (cnt + 6); |
d01949b6 | 4029 | long sizeof_junkbuf = (rs->remote_packet_size); |
c2d11a7d | 4030 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 4031 | |
c906108c SS |
4032 | int ch; |
4033 | int tcount = 0; | |
4034 | char *p; | |
4035 | ||
4036 | /* Copy the packet into buffer BUF2, encapsulating it | |
4037 | and giving it a checksum. */ | |
4038 | ||
c906108c SS |
4039 | p = buf2; |
4040 | *p++ = '$'; | |
4041 | ||
4042 | for (i = 0; i < cnt; i++) | |
4043 | { | |
4044 | csum += buf[i]; | |
4045 | *p++ = buf[i]; | |
4046 | } | |
4047 | *p++ = '#'; | |
4048 | *p++ = tohex ((csum >> 4) & 0xf); | |
4049 | *p++ = tohex (csum & 0xf); | |
4050 | ||
4051 | /* Send it over and over until we get a positive ack. */ | |
4052 | ||
4053 | while (1) | |
4054 | { | |
4055 | int started_error_output = 0; | |
4056 | ||
4057 | if (remote_debug) | |
4058 | { | |
4059 | *p = '\0'; | |
43e526b9 JM |
4060 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4061 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4062 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4063 | gdb_flush (gdb_stdlog); |
c906108c | 4064 | } |
2cd58942 | 4065 | if (serial_write (remote_desc, buf2, p - buf2)) |
c906108c SS |
4066 | perror_with_name ("putpkt: write failed"); |
4067 | ||
4068 | /* read until either a timeout occurs (-2) or '+' is read */ | |
4069 | while (1) | |
4070 | { | |
4071 | ch = readchar (remote_timeout); | |
4072 | ||
c5aa993b | 4073 | if (remote_debug) |
c906108c SS |
4074 | { |
4075 | switch (ch) | |
4076 | { | |
4077 | case '+': | |
1216fa2c | 4078 | case '-': |
c906108c SS |
4079 | case SERIAL_TIMEOUT: |
4080 | case '$': | |
4081 | if (started_error_output) | |
4082 | { | |
4083 | putchar_unfiltered ('\n'); | |
4084 | started_error_output = 0; | |
4085 | } | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | switch (ch) | |
4090 | { | |
4091 | case '+': | |
4092 | if (remote_debug) | |
0f71a2f6 | 4093 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4094 | return 1; |
1216fa2c AC |
4095 | case '-': |
4096 | if (remote_debug) | |
4097 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4098 | case SERIAL_TIMEOUT: |
c5aa993b | 4099 | tcount++; |
c906108c SS |
4100 | if (tcount > 3) |
4101 | return 0; | |
4102 | break; /* Retransmit buffer */ | |
4103 | case '$': | |
4104 | { | |
40e3f985 FN |
4105 | if (remote_debug) |
4106 | fprintf_unfiltered (gdb_stdlog, "Packet instead of Ack, ignoring it\n"); | |
c5aa993b JM |
4107 | /* It's probably an old response, and we're out of sync. |
4108 | Just gobble up the packet and ignore it. */ | |
40e3f985 | 4109 | read_frame (junkbuf, sizeof_junkbuf); |
c5aa993b | 4110 | continue; /* Now, go look for + */ |
c906108c SS |
4111 | } |
4112 | default: | |
4113 | if (remote_debug) | |
4114 | { | |
4115 | if (!started_error_output) | |
4116 | { | |
4117 | started_error_output = 1; | |
0f71a2f6 | 4118 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4119 | } |
0f71a2f6 | 4120 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4121 | } |
4122 | continue; | |
4123 | } | |
4124 | break; /* Here to retransmit */ | |
4125 | } | |
4126 | ||
4127 | #if 0 | |
4128 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4129 | able to get out next time we call QUIT, without anything as |
4130 | violent as interrupt_query. If we want to provide a way out of | |
4131 | here without getting to the next QUIT, it should be based on | |
4132 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4133 | if (quit_flag) |
4134 | { | |
4135 | quit_flag = 0; | |
4136 | interrupt_query (); | |
4137 | } | |
4138 | #endif | |
4139 | } | |
4140 | } | |
4141 | ||
0f71a2f6 JM |
4142 | static int remote_cisco_mode; |
4143 | ||
c906108c SS |
4144 | /* Come here after finding the start of the frame. Collect the rest |
4145 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
4146 | compression. No more than sizeof_buf-1 characters are read so that |
4147 | the buffer can be NUL terminated. | |
c906108c | 4148 | |
c2d11a7d JM |
4149 | Returns -1 on error, number of characters in buffer (ignoring the |
4150 | trailing NULL) on success. (could be extended to return one of the | |
4151 | SERIAL status indications). */ | |
4152 | ||
4153 | static long | |
4154 | read_frame (char *buf, | |
4155 | long sizeof_buf) | |
c906108c SS |
4156 | { |
4157 | unsigned char csum; | |
c2d11a7d | 4158 | long bc; |
c906108c SS |
4159 | int c; |
4160 | ||
4161 | csum = 0; | |
c2d11a7d | 4162 | bc = 0; |
c906108c SS |
4163 | |
4164 | while (1) | |
4165 | { | |
c2d11a7d | 4166 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */ |
c906108c | 4167 | c = readchar (remote_timeout); |
c906108c SS |
4168 | switch (c) |
4169 | { | |
4170 | case SERIAL_TIMEOUT: | |
4171 | if (remote_debug) | |
0f71a2f6 | 4172 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4173 | return -1; |
c906108c SS |
4174 | case '$': |
4175 | if (remote_debug) | |
0f71a2f6 JM |
4176 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4177 | gdb_stdlog); | |
c2d11a7d | 4178 | return -1; /* Start a new packet, count retries */ |
c906108c SS |
4179 | case '#': |
4180 | { | |
4181 | unsigned char pktcsum; | |
e1b09194 AC |
4182 | int check_0 = 0; |
4183 | int check_1 = 0; | |
c906108c | 4184 | |
c2d11a7d | 4185 | buf[bc] = '\0'; |
c906108c | 4186 | |
e1b09194 AC |
4187 | check_0 = readchar (remote_timeout); |
4188 | if (check_0 >= 0) | |
4189 | check_1 = readchar (remote_timeout); | |
4190 | ||
4191 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) | |
4192 | { | |
4193 | if (remote_debug) | |
4194 | fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog); | |
4195 | return -1; | |
4196 | } | |
4197 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4198 | { |
4199 | if (remote_debug) | |
4200 | fputs_filtered ("Communication error in checksum\n", gdb_stdlog); | |
4201 | return -1; | |
4202 | } | |
c906108c | 4203 | |
e1b09194 | 4204 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4205 | if (csum == pktcsum) |
c2d11a7d | 4206 | return bc; |
c906108c | 4207 | |
c5aa993b | 4208 | if (remote_debug) |
c906108c | 4209 | { |
0f71a2f6 | 4210 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4211 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4212 | pktcsum, csum); |
4213 | fputs_filtered (buf, gdb_stdlog); | |
4214 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4215 | } |
c2d11a7d JM |
4216 | /* Number of characters in buffer ignoring trailing |
4217 | NUL. */ | |
4218 | return -1; | |
c906108c SS |
4219 | } |
4220 | case '*': /* Run length encoding */ | |
c2c6d25f JM |
4221 | { |
4222 | int repeat; | |
4223 | csum += c; | |
c906108c | 4224 | |
c2c6d25f JM |
4225 | if (remote_cisco_mode == 0) |
4226 | { | |
4227 | c = readchar (remote_timeout); | |
4228 | csum += c; | |
4229 | repeat = c - ' ' + 3; /* Compute repeat count */ | |
4230 | } | |
4231 | else | |
4232 | { | |
4233 | /* Cisco's run-length encoding variant uses two | |
4234 | hex chars to represent the repeat count. */ | |
4235 | ||
4236 | c = readchar (remote_timeout); | |
4237 | csum += c; | |
4238 | repeat = fromhex (c) << 4; | |
4239 | c = readchar (remote_timeout); | |
4240 | csum += c; | |
4241 | repeat += fromhex (c); | |
4242 | } | |
c906108c | 4243 | |
c2d11a7d JM |
4244 | /* The character before ``*'' is repeated. */ |
4245 | ||
c2c6d25f | 4246 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4247 | && bc > 0 |
fb6e5c55 | 4248 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4249 | { |
c2d11a7d JM |
4250 | memset (&buf[bc], buf[bc - 1], repeat); |
4251 | bc += repeat; | |
c2c6d25f JM |
4252 | continue; |
4253 | } | |
4254 | ||
c2d11a7d | 4255 | buf[bc] = '\0'; |
c2c6d25f JM |
4256 | printf_filtered ("Repeat count %d too large for buffer: ", repeat); |
4257 | puts_filtered (buf); | |
4258 | puts_filtered ("\n"); | |
c2d11a7d | 4259 | return -1; |
c2c6d25f | 4260 | } |
c906108c | 4261 | default: |
c2d11a7d | 4262 | if (bc < sizeof_buf - 1) |
c906108c | 4263 | { |
c2d11a7d | 4264 | buf[bc++] = c; |
c906108c SS |
4265 | csum += c; |
4266 | continue; | |
4267 | } | |
4268 | ||
c2d11a7d | 4269 | buf[bc] = '\0'; |
c906108c SS |
4270 | puts_filtered ("Remote packet too long: "); |
4271 | puts_filtered (buf); | |
4272 | puts_filtered ("\n"); | |
4273 | ||
c2d11a7d | 4274 | return -1; |
c906108c SS |
4275 | } |
4276 | } | |
4277 | } | |
4278 | ||
4279 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4280 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4281 | this is used (in synchronous mode) to wait for a target that is is | |
4282 | executing user code to stop. */ | |
d9fcf2fb JM |
4283 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4284 | don't have to change all the calls to getpkt to deal with the | |
4285 | return value, because at the moment I don't know what the right | |
4286 | thing to do it for those. */ | |
c906108c | 4287 | void |
c2d11a7d JM |
4288 | getpkt (char *buf, |
4289 | long sizeof_buf, | |
4290 | int forever) | |
d9fcf2fb JM |
4291 | { |
4292 | int timed_out; | |
4293 | ||
4294 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4295 | } | |
4296 | ||
4297 | ||
4298 | /* Read a packet from the remote machine, with error checking, and | |
4299 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4300 | this is used (in synchronous mode) to wait for a target that is is | |
4301 | executing user code to stop. If FOREVER == 0, this function is | |
4302 | allowed to time out gracefully and return an indication of this to | |
4303 | the caller. */ | |
3172dc30 | 4304 | static int |
d9fcf2fb JM |
4305 | getpkt_sane (char *buf, |
4306 | long sizeof_buf, | |
4307 | int forever) | |
c906108c SS |
4308 | { |
4309 | int c; | |
4310 | int tries; | |
4311 | int timeout; | |
4312 | int val; | |
4313 | ||
c5aa993b | 4314 | strcpy (buf, "timeout"); |
c906108c SS |
4315 | |
4316 | if (forever) | |
4317 | { | |
c906108c | 4318 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4319 | } |
4320 | ||
4321 | else | |
4322 | timeout = remote_timeout; | |
4323 | ||
4324 | #define MAX_TRIES 3 | |
4325 | ||
4326 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4327 | { | |
4328 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
4329 | continuously, but if it pauses, we'll get a zero from readchar |
4330 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
4331 | |
4332 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
4333 | After that, we expect characters to arrive at a brisk pace. They |
4334 | should show up within remote_timeout intervals. */ | |
c906108c SS |
4335 | |
4336 | do | |
4337 | { | |
4338 | c = readchar (timeout); | |
4339 | ||
4340 | if (c == SERIAL_TIMEOUT) | |
4341 | { | |
2acceee2 | 4342 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4343 | { |
2acceee2 | 4344 | QUIT; |
c906108c SS |
4345 | target_mourn_inferior (); |
4346 | error ("Watchdog has expired. Target detached.\n"); | |
4347 | } | |
c906108c | 4348 | if (remote_debug) |
0f71a2f6 | 4349 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4350 | goto retry; |
4351 | } | |
4352 | } | |
4353 | while (c != '$'); | |
4354 | ||
4355 | /* We've found the start of a packet, now collect the data. */ | |
4356 | ||
c2d11a7d | 4357 | val = read_frame (buf, sizeof_buf); |
c906108c | 4358 | |
c2d11a7d | 4359 | if (val >= 0) |
c906108c SS |
4360 | { |
4361 | if (remote_debug) | |
43e526b9 JM |
4362 | { |
4363 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4364 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4365 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4366 | } | |
2cd58942 | 4367 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4368 | return 0; |
c906108c SS |
4369 | } |
4370 | ||
4371 | /* Try the whole thing again. */ | |
4372 | retry: | |
2cd58942 | 4373 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4374 | } |
4375 | ||
4376 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
4377 | ||
4378 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
2cd58942 | 4379 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4380 | return 1; |
c906108c SS |
4381 | } |
4382 | \f | |
4383 | static void | |
fba45db2 | 4384 | remote_kill (void) |
c906108c SS |
4385 | { |
4386 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4387 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4388 | if (kill_kludge) | |
4389 | { | |
4390 | kill_kludge = 0; | |
4391 | target_mourn_inferior (); | |
4392 | return; | |
4393 | } | |
4394 | ||
4395 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4396 | speaking terms with the remote system. */ | |
c5aa993b | 4397 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4398 | |
4399 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4400 | we do or not. For the existing stubs, kill is a noop. */ | |
4401 | target_mourn_inferior (); | |
4402 | } | |
4403 | ||
43ff13b4 JM |
4404 | /* Async version of remote_kill. */ |
4405 | static void | |
fba45db2 | 4406 | remote_async_kill (void) |
43ff13b4 JM |
4407 | { |
4408 | /* Unregister the file descriptor from the event loop. */ | |
ed9a39eb | 4409 | if (target_is_async_p ()) |
2cd58942 | 4410 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4411 | |
4412 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4413 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4414 | if (kill_kludge) | |
4415 | { | |
4416 | kill_kludge = 0; | |
4417 | target_mourn_inferior (); | |
4418 | return; | |
4419 | } | |
4420 | ||
4421 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4422 | speaking terms with the remote system. */ | |
c5aa993b | 4423 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4424 | |
4425 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4426 | we do or not. For the existing stubs, kill is a noop. */ | |
4427 | target_mourn_inferior (); | |
4428 | } | |
4429 | ||
c906108c | 4430 | static void |
fba45db2 | 4431 | remote_mourn (void) |
c906108c SS |
4432 | { |
4433 | remote_mourn_1 (&remote_ops); | |
4434 | } | |
4435 | ||
53a5351d | 4436 | static void |
fba45db2 | 4437 | remote_async_mourn (void) |
53a5351d JM |
4438 | { |
4439 | remote_mourn_1 (&remote_async_ops); | |
4440 | } | |
4441 | ||
c906108c | 4442 | static void |
fba45db2 | 4443 | extended_remote_mourn (void) |
c906108c SS |
4444 | { |
4445 | /* We do _not_ want to mourn the target like this; this will | |
4446 | remove the extended remote target from the target stack, | |
4447 | and the next time the user says "run" it'll fail. | |
4448 | ||
4449 | FIXME: What is the right thing to do here? */ | |
4450 | #if 0 | |
4451 | remote_mourn_1 (&extended_remote_ops); | |
4452 | #endif | |
4453 | } | |
4454 | ||
4455 | /* Worker function for remote_mourn. */ | |
4456 | static void | |
fba45db2 | 4457 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4458 | { |
4459 | unpush_target (target); | |
4460 | generic_mourn_inferior (); | |
4461 | } | |
4462 | ||
4463 | /* In the extended protocol we want to be able to do things like | |
4464 | "run" and have them basically work as expected. So we need | |
4465 | a special create_inferior function. | |
4466 | ||
4467 | FIXME: One day add support for changing the exec file | |
4468 | we're debugging, arguments and an environment. */ | |
4469 | ||
4470 | static void | |
fba45db2 | 4471 | extended_remote_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
4472 | { |
4473 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4474 | the remote server. */ | |
4475 | remove_breakpoints (); | |
4476 | ||
4477 | /* Now restart the remote server. */ | |
4478 | extended_remote_restart (); | |
4479 | ||
4480 | /* Now put the breakpoints back in. This way we're safe if the | |
4481 | restart function works via a unix fork on the remote side. */ | |
4482 | insert_breakpoints (); | |
4483 | ||
4484 | /* Clean up from the last time we were running. */ | |
4485 | clear_proceed_status (); | |
4486 | ||
4487 | /* Let the remote process run. */ | |
4488 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4489 | } | |
4490 | ||
43ff13b4 JM |
4491 | /* Async version of extended_remote_create_inferior. */ |
4492 | static void | |
fba45db2 | 4493 | extended_remote_async_create_inferior (char *exec_file, char *args, char **env) |
43ff13b4 JM |
4494 | { |
4495 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4496 | the remote server. */ | |
4497 | remove_breakpoints (); | |
4498 | ||
4499 | /* If running asynchronously, register the target file descriptor | |
4500 | with the event loop. */ | |
2acceee2 JM |
4501 | if (event_loop_p && target_can_async_p ()) |
4502 | target_async (inferior_event_handler, 0); | |
43ff13b4 JM |
4503 | |
4504 | /* Now restart the remote server. */ | |
4505 | extended_remote_restart (); | |
4506 | ||
4507 | /* Now put the breakpoints back in. This way we're safe if the | |
4508 | restart function works via a unix fork on the remote side. */ | |
4509 | insert_breakpoints (); | |
4510 | ||
4511 | /* Clean up from the last time we were running. */ | |
4512 | clear_proceed_status (); | |
4513 | ||
4514 | /* Let the remote process run. */ | |
4515 | proceed (-1, TARGET_SIGNAL_0, 0); | |
4516 | } | |
c906108c | 4517 | \f |
c5aa993b | 4518 | |
c906108c SS |
4519 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
4520 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
4521 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
4522 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
4523 | the standard routines that are in mem-break.c. */ | |
4524 | ||
4525 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
4526 | the choice of breakpoint instruction affects target program design and | |
4527 | vice versa, and by making it user-tweakable, the special code here | |
4528 | goes away and we need fewer special GDB configurations. */ | |
4529 | ||
4530 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4531 | #define REMOTE_BREAKPOINT | |
4532 | #endif | |
4533 | ||
4534 | #ifdef REMOTE_BREAKPOINT | |
4535 | ||
4536 | /* If the target isn't bi-endian, just pretend it is. */ | |
4537 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4538 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4539 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4540 | #endif | |
4541 | ||
4542 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4543 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4544 | ||
4545 | #endif /* REMOTE_BREAKPOINT */ | |
4546 | ||
4547 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4548 | support. We read the contents of the target location and stash it, | |
4549 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4550 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4551 | memory allocated for saving the target contents. It is guaranteed | |
4552 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4553 | is accomplished via BREAKPOINT_MAX). */ | |
4554 | ||
4555 | static int | |
fba45db2 | 4556 | remote_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4557 | { |
d01949b6 | 4558 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4559 | #ifdef REMOTE_BREAKPOINT |
4560 | int val; | |
96baa820 JM |
4561 | #endif |
4562 | int bp_size; | |
4563 | ||
d471ea57 AC |
4564 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4565 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4566 | fails, and the user has explicitly requested the Z support then | |
4567 | report an error, otherwise, mark it disabled and go on. */ | |
96baa820 | 4568 | |
d471ea57 | 4569 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4570 | { |
d01949b6 | 4571 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4572 | char *p = buf; |
96baa820 | 4573 | |
0caabb7e | 4574 | addr = remote_address_masked (addr); |
96baa820 JM |
4575 | *(p++) = 'Z'; |
4576 | *(p++) = '0'; | |
4577 | *(p++) = ','; | |
0caabb7e AC |
4578 | p += hexnumstr (p, (ULONGEST) addr); |
4579 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4580 | sprintf (p, ",%d", bp_size); |
4581 | ||
4582 | putpkt (buf); | |
d01949b6 | 4583 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4584 | |
d471ea57 | 4585 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_SOFTWARE_BP])) |
96baa820 | 4586 | { |
d471ea57 AC |
4587 | case PACKET_ERROR: |
4588 | return -1; | |
4589 | case PACKET_OK: | |
4590 | return 0; | |
4591 | case PACKET_UNKNOWN: | |
4592 | break; | |
96baa820 JM |
4593 | } |
4594 | } | |
c906108c | 4595 | |
96baa820 | 4596 | #ifdef REMOTE_BREAKPOINT |
c906108c SS |
4597 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4598 | ||
4599 | if (val == 0) | |
4600 | { | |
4601 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4602 | val = target_write_memory (addr, (char *) big_break_insn, | |
4603 | sizeof big_break_insn); | |
4604 | else | |
4605 | val = target_write_memory (addr, (char *) little_break_insn, | |
4606 | sizeof little_break_insn); | |
4607 | } | |
4608 | ||
4609 | return val; | |
4610 | #else | |
4611 | return memory_insert_breakpoint (addr, contents_cache); | |
4612 | #endif /* REMOTE_BREAKPOINT */ | |
4613 | } | |
4614 | ||
4615 | static int | |
fba45db2 | 4616 | remote_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c | 4617 | { |
d01949b6 | 4618 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4619 | int bp_size; |
4620 | ||
d471ea57 | 4621 | if (remote_protocol_Z[Z_PACKET_SOFTWARE_BP].support != PACKET_DISABLE) |
96baa820 | 4622 | { |
d01949b6 | 4623 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4624 | char *p = buf; |
96baa820 JM |
4625 | |
4626 | *(p++) = 'z'; | |
4627 | *(p++) = '0'; | |
4628 | *(p++) = ','; | |
4629 | ||
0caabb7e AC |
4630 | addr = remote_address_masked (addr); |
4631 | p += hexnumstr (p, (ULONGEST) addr); | |
4632 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 JM |
4633 | sprintf (p, ",%d", bp_size); |
4634 | ||
4635 | putpkt (buf); | |
d01949b6 | 4636 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
4637 | |
4638 | return (buf[0] == 'E'); | |
4639 | } | |
4640 | ||
c906108c SS |
4641 | #ifdef REMOTE_BREAKPOINT |
4642 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4643 | #else | |
4644 | return memory_remove_breakpoint (addr, contents_cache); | |
4645 | #endif /* REMOTE_BREAKPOINT */ | |
4646 | } | |
4647 | ||
d471ea57 AC |
4648 | static int |
4649 | watchpoint_to_Z_packet (int type) | |
4650 | { | |
4651 | switch (type) | |
4652 | { | |
4653 | case hw_write: | |
4654 | return 2; | |
4655 | break; | |
4656 | case hw_read: | |
4657 | return 3; | |
4658 | break; | |
4659 | case hw_access: | |
4660 | return 4; | |
4661 | break; | |
4662 | default: | |
8e65ff28 AC |
4663 | internal_error (__FILE__, __LINE__, |
4664 | "hw_bp_to_z: bad watchpoint type %d", type); | |
d471ea57 AC |
4665 | } |
4666 | } | |
4667 | ||
4668 | /* FIXME: This function should be static and a member of the remote | |
4669 | target vector. */ | |
4670 | ||
96baa820 | 4671 | int |
fba45db2 | 4672 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4673 | { |
d01949b6 AC |
4674 | struct remote_state *rs = get_remote_state (); |
4675 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4676 | char *p; |
d471ea57 | 4677 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4678 | |
d471ea57 AC |
4679 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) |
4680 | error ("Can't set hardware watchpoints without the '%s' (%s) packet\n", | |
4681 | remote_protocol_Z[packet].name, | |
4682 | remote_protocol_Z[packet].title); | |
96baa820 | 4683 | |
d471ea57 | 4684 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4685 | p = strchr (buf, '\0'); |
4686 | addr = remote_address_masked (addr); | |
4687 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4688 | sprintf (p, ",%x", len); |
96baa820 JM |
4689 | |
4690 | putpkt (buf); | |
d01949b6 | 4691 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4692 | |
d471ea57 AC |
4693 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4694 | { | |
4695 | case PACKET_ERROR: | |
4696 | case PACKET_UNKNOWN: | |
4697 | return -1; | |
4698 | case PACKET_OK: | |
4699 | return 0; | |
4700 | } | |
8e65ff28 AC |
4701 | internal_error (__FILE__, __LINE__, |
4702 | "remote_insert_watchpoint: reached end of function"); | |
96baa820 JM |
4703 | } |
4704 | ||
d471ea57 AC |
4705 | /* FIXME: This function should be static and a member of the remote |
4706 | target vector. */ | |
4707 | ||
96baa820 | 4708 | int |
fba45db2 | 4709 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4710 | { |
d01949b6 AC |
4711 | struct remote_state *rs = get_remote_state (); |
4712 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4713 | char *p; |
d471ea57 AC |
4714 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4715 | ||
4716 | if (remote_protocol_Z[packet].support == PACKET_DISABLE) | |
4717 | error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n", | |
4718 | remote_protocol_Z[packet].name, | |
4719 | remote_protocol_Z[packet].title); | |
96baa820 | 4720 | |
d471ea57 | 4721 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4722 | p = strchr (buf, '\0'); |
4723 | addr = remote_address_masked (addr); | |
4724 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4725 | sprintf (p, ",%x", len); |
96baa820 | 4726 | putpkt (buf); |
d01949b6 | 4727 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4728 | |
d471ea57 AC |
4729 | switch (packet_ok (buf, &remote_protocol_Z[packet])) |
4730 | { | |
4731 | case PACKET_ERROR: | |
4732 | case PACKET_UNKNOWN: | |
4733 | return -1; | |
4734 | case PACKET_OK: | |
4735 | return 0; | |
4736 | } | |
8e65ff28 AC |
4737 | internal_error (__FILE__, __LINE__, |
4738 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4739 | } |
4740 | ||
d471ea57 AC |
4741 | /* FIXME: This function should be static and a member of the remote |
4742 | target vector. */ | |
4743 | ||
96baa820 | 4744 | int |
fba45db2 | 4745 | remote_insert_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4746 | { |
d01949b6 AC |
4747 | struct remote_state *rs = get_remote_state (); |
4748 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4749 | char *p = buf; |
96baa820 | 4750 | |
d471ea57 AC |
4751 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4752 | error ("Can't set hardware breakpoint without the '%s' (%s) packet\n", | |
4753 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4754 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4755 | ||
96baa820 JM |
4756 | *(p++) = 'Z'; |
4757 | *(p++) = '1'; | |
4758 | *(p++) = ','; | |
4759 | ||
4760 | addr = remote_address_masked (addr); | |
4761 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4762 | sprintf (p, ",%x", len); |
96baa820 JM |
4763 | |
4764 | putpkt (buf); | |
d01949b6 | 4765 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4766 | |
d471ea57 AC |
4767 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4768 | { | |
4769 | case PACKET_ERROR: | |
4770 | case PACKET_UNKNOWN: | |
4771 | return -1; | |
4772 | case PACKET_OK: | |
4773 | return 0; | |
4774 | } | |
8e65ff28 AC |
4775 | internal_error (__FILE__, __LINE__, |
4776 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 JM |
4777 | } |
4778 | ||
d471ea57 AC |
4779 | /* FIXME: This function should be static and a member of the remote |
4780 | target vector. */ | |
4781 | ||
96baa820 | 4782 | int |
fba45db2 | 4783 | remote_remove_hw_breakpoint (CORE_ADDR addr, int len) |
96baa820 | 4784 | { |
d01949b6 AC |
4785 | struct remote_state *rs = get_remote_state (); |
4786 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4787 | char *p = buf; |
96baa820 | 4788 | |
d471ea57 AC |
4789 | if (remote_protocol_Z[Z_PACKET_HARDWARE_BP].support == PACKET_DISABLE) |
4790 | error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n", | |
4791 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].name, | |
4792 | remote_protocol_Z[Z_PACKET_HARDWARE_BP].title); | |
4793 | ||
96baa820 JM |
4794 | *(p++) = 'z'; |
4795 | *(p++) = '1'; | |
4796 | *(p++) = ','; | |
4797 | ||
4798 | addr = remote_address_masked (addr); | |
4799 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4800 | sprintf (p, ",%x", len); |
96baa820 JM |
4801 | |
4802 | putpkt(buf); | |
d01949b6 | 4803 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 | 4804 | |
d471ea57 AC |
4805 | switch (packet_ok (buf, &remote_protocol_Z[Z_PACKET_HARDWARE_BP])) |
4806 | { | |
4807 | case PACKET_ERROR: | |
4808 | case PACKET_UNKNOWN: | |
4809 | return -1; | |
4810 | case PACKET_OK: | |
4811 | return 0; | |
4812 | } | |
8e65ff28 AC |
4813 | internal_error (__FILE__, __LINE__, |
4814 | "remote_remove_watchpoint: reached end of function"); | |
96baa820 | 4815 | } |
96baa820 | 4816 | |
c906108c SS |
4817 | /* Some targets are only capable of doing downloads, and afterwards |
4818 | they switch to the remote serial protocol. This function provides | |
4819 | a clean way to get from the download target to the remote target. | |
4820 | It's basically just a wrapper so that we don't have to expose any | |
4821 | of the internal workings of remote.c. | |
4822 | ||
4823 | Prior to calling this routine, you should shutdown the current | |
4824 | target code, else you will get the "A program is being debugged | |
4825 | already..." message. Usually a call to pop_target() suffices. */ | |
4826 | ||
4827 | void | |
fba45db2 | 4828 | push_remote_target (char *name, int from_tty) |
c906108c SS |
4829 | { |
4830 | printf_filtered ("Switching to remote protocol\n"); | |
4831 | remote_open (name, from_tty); | |
4832 | } | |
4833 | ||
4834 | /* Other targets want to use the entire remote serial module but with | |
4835 | certain remote_ops overridden. */ | |
4836 | ||
4837 | void | |
fba45db2 KB |
4838 | open_remote_target (char *name, int from_tty, struct target_ops *target, |
4839 | int extended_p) | |
c906108c SS |
4840 | { |
4841 | printf_filtered ("Selecting the %sremote protocol\n", | |
4842 | (extended_p ? "extended-" : "")); | |
4843 | remote_open_1 (name, from_tty, target, extended_p); | |
4844 | } | |
4845 | ||
4846 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4847 | ||
c5aa993b JM |
4848 | static unsigned long crc32_table[256] = |
4849 | {0, 0}; | |
c906108c SS |
4850 | |
4851 | static unsigned long | |
fba45db2 | 4852 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4853 | { |
c5aa993b | 4854 | if (!crc32_table[1]) |
c906108c SS |
4855 | { |
4856 | /* Initialize the CRC table and the decoding table. */ | |
4857 | int i, j; | |
4858 | unsigned int c; | |
4859 | ||
4860 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4861 | { |
4862 | for (c = i << 24, j = 8; j > 0; --j) | |
4863 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4864 | crc32_table[i] = c; | |
4865 | } | |
c906108c SS |
4866 | } |
4867 | ||
4868 | while (len--) | |
4869 | { | |
4870 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4871 | buf++; | |
4872 | } | |
4873 | return crc; | |
4874 | } | |
4875 | ||
4876 | /* compare-sections command | |
4877 | ||
4878 | With no arguments, compares each loadable section in the exec bfd | |
4879 | with the same memory range on the target, and reports mismatches. | |
4880 | Useful for verifying the image on the target against the exec file. | |
4881 | Depends on the target understanding the new "qCRC:" request. */ | |
4882 | ||
e514a9d6 JM |
4883 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4884 | target method (target verify memory) and generic version of the | |
4885 | actual command. This will allow other high-level code (especially | |
4886 | generic_load()) to make use of this target functionality. */ | |
4887 | ||
c906108c | 4888 | static void |
fba45db2 | 4889 | compare_sections_command (char *args, int from_tty) |
c906108c | 4890 | { |
d01949b6 | 4891 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4892 | asection *s; |
4893 | unsigned long host_crc, target_crc; | |
4894 | extern bfd *exec_bfd; | |
4895 | struct cleanup *old_chain; | |
085dd6e6 JM |
4896 | char *tmp; |
4897 | char *sectdata; | |
ce359b09 | 4898 | const char *sectname; |
d01949b6 | 4899 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4900 | bfd_size_type size; |
4901 | bfd_vma lma; | |
4902 | int matched = 0; | |
4903 | int mismatched = 0; | |
4904 | ||
4905 | if (!exec_bfd) | |
4906 | error ("command cannot be used without an exec file"); | |
4907 | if (!current_target.to_shortname || | |
4908 | strcmp (current_target.to_shortname, "remote") != 0) | |
4909 | error ("command can only be used with remote target"); | |
4910 | ||
c5aa993b | 4911 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4912 | { |
4913 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4914 | continue; /* skip non-loadable section */ |
c906108c SS |
4915 | |
4916 | size = bfd_get_section_size_before_reloc (s); | |
4917 | if (size == 0) | |
c5aa993b | 4918 | continue; /* skip zero-length section */ |
c906108c | 4919 | |
ce359b09 | 4920 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4921 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4922 | continue; /* not the section selected by user */ |
c906108c | 4923 | |
c5aa993b | 4924 | matched = 1; /* do this section */ |
c906108c SS |
4925 | lma = s->lma; |
4926 | /* FIXME: assumes lma can fit into long */ | |
4927 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4928 | putpkt (buf); | |
4929 | ||
4930 | /* be clever; compute the host_crc before waiting for target reply */ | |
4931 | sectdata = xmalloc (size); | |
b8c9b27d | 4932 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4933 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4934 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4935 | ||
d01949b6 | 4936 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
4937 | if (buf[0] == 'E') |
4938 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4939 | sectname, lma, lma + size); | |
4940 | if (buf[0] != 'C') | |
4941 | error ("remote target does not support this operation"); | |
4942 | ||
4943 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4944 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4945 | ||
d4f3574e SS |
4946 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4947 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4948 | if (host_crc == target_crc) |
4949 | printf_filtered ("matched.\n"); | |
4950 | else | |
c5aa993b JM |
4951 | { |
4952 | printf_filtered ("MIS-MATCHED!\n"); | |
4953 | mismatched++; | |
4954 | } | |
c906108c SS |
4955 | |
4956 | do_cleanups (old_chain); | |
4957 | } | |
4958 | if (mismatched > 0) | |
4959 | warning ("One or more sections of the remote executable does not match\n\ | |
4960 | the loaded file\n"); | |
4961 | if (args && !matched) | |
4962 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4963 | } | |
4964 | ||
4965 | static int | |
fba45db2 | 4966 | remote_query (int query_type, char *buf, char *outbuf, int *bufsiz) |
c906108c | 4967 | { |
d01949b6 | 4968 | struct remote_state *rs = get_remote_state (); |
c906108c | 4969 | int i; |
d01949b6 | 4970 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4971 | char *p2 = &buf2[0]; |
c906108c | 4972 | |
c5aa993b | 4973 | if (!bufsiz) |
c906108c SS |
4974 | error ("null pointer to remote bufer size specified"); |
4975 | ||
d01949b6 | 4976 | /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let |
c906108c SS |
4977 | the caller know and return what the minimum size is */ |
4978 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
d01949b6 | 4979 | if (*bufsiz < (rs->remote_packet_size)) |
c906108c | 4980 | { |
d01949b6 | 4981 | *bufsiz = (rs->remote_packet_size); |
c906108c SS |
4982 | return -1; |
4983 | } | |
4984 | ||
4985 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4986 | if (!remote_desc) |
c906108c SS |
4987 | error ("remote query is only available after target open"); |
4988 | ||
4989 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4990 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4991 | error ("invalid remote query type"); |
4992 | ||
c5aa993b | 4993 | if (!buf) |
c906108c SS |
4994 | error ("null remote query specified"); |
4995 | ||
c5aa993b | 4996 | if (!outbuf) |
c906108c SS |
4997 | error ("remote query requires a buffer to receive data"); |
4998 | ||
4999 | outbuf[0] = '\0'; | |
5000 | ||
5001 | *p2++ = 'q'; | |
5002 | *p2++ = query_type; | |
5003 | ||
5004 | /* we used one buffer char for the remote protocol q command and another | |
5005 | for the query type. As the remote protocol encapsulation uses 4 chars | |
5006 | plus one extra in case we are debugging (remote_debug), | |
5007 | we have PBUFZIZ - 7 left to pack the query string */ | |
5008 | i = 0; | |
d01949b6 | 5009 | while (buf[i] && (i < ((rs->remote_packet_size) - 8))) |
c906108c SS |
5010 | { |
5011 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
5012 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
5013 | error ("illegal characters in query string"); | |
c906108c SS |
5014 | |
5015 | *p2++ = buf[i]; | |
5016 | i++; | |
5017 | } | |
5018 | *p2 = buf[i]; | |
5019 | ||
c5aa993b | 5020 | if (buf[i]) |
c906108c SS |
5021 | error ("query larger than available buffer"); |
5022 | ||
5023 | i = putpkt (buf2); | |
c5aa993b JM |
5024 | if (i < 0) |
5025 | return i; | |
c906108c | 5026 | |
c2d11a7d | 5027 | getpkt (outbuf, *bufsiz, 0); |
c906108c SS |
5028 | |
5029 | return 0; | |
5030 | } | |
5031 | ||
96baa820 JM |
5032 | static void |
5033 | remote_rcmd (char *command, | |
d9fcf2fb | 5034 | struct ui_file *outbuf) |
96baa820 | 5035 | { |
d01949b6 | 5036 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5037 | int i; |
d01949b6 | 5038 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
5039 | char *p = buf; |
5040 | ||
5041 | if (!remote_desc) | |
5042 | error ("remote rcmd is only available after target open"); | |
5043 | ||
7be570e7 JM |
5044 | /* Send a NULL command across as an empty command */ |
5045 | if (command == NULL) | |
5046 | command = ""; | |
5047 | ||
96baa820 JM |
5048 | /* The query prefix */ |
5049 | strcpy (buf, "qRcmd,"); | |
5050 | p = strchr (buf, '\0'); | |
5051 | ||
d01949b6 | 5052 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > (rs->remote_packet_size)) |
96baa820 JM |
5053 | error ("\"monitor\" command ``%s'' is too long\n", command); |
5054 | ||
5055 | /* Encode the actual command */ | |
30559e10 | 5056 | bin2hex (command, p, 0); |
96baa820 JM |
5057 | |
5058 | if (putpkt (buf) < 0) | |
5059 | error ("Communication problem with target\n"); | |
5060 | ||
5061 | /* get/display the response */ | |
5062 | while (1) | |
5063 | { | |
5064 | /* XXX - see also tracepoint.c:remote_get_noisy_reply() */ | |
5065 | buf[0] = '\0'; | |
d01949b6 | 5066 | getpkt (buf, (rs->remote_packet_size), 0); |
96baa820 JM |
5067 | if (buf[0] == '\0') |
5068 | error ("Target does not support this command\n"); | |
5069 | if (buf[0] == 'O' && buf[1] != 'K') | |
5070 | { | |
5071 | remote_console_output (buf + 1); /* 'O' message from stub */ | |
5072 | continue; | |
5073 | } | |
5074 | if (strcmp (buf, "OK") == 0) | |
5075 | break; | |
7be570e7 JM |
5076 | if (strlen (buf) == 3 && buf[0] == 'E' |
5077 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5078 | { | |
5079 | error ("Protocol error with Rcmd"); | |
5080 | } | |
96baa820 JM |
5081 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5082 | { | |
5083 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5084 | fputc_unfiltered (c, outbuf); | |
5085 | } | |
5086 | break; | |
5087 | } | |
5088 | } | |
5089 | ||
c906108c | 5090 | static void |
fba45db2 | 5091 | packet_command (char *args, int from_tty) |
c906108c | 5092 | { |
d01949b6 AC |
5093 | struct remote_state *rs = get_remote_state (); |
5094 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 5095 | |
c5aa993b | 5096 | if (!remote_desc) |
c906108c SS |
5097 | error ("command can only be used with remote target"); |
5098 | ||
c5aa993b | 5099 | if (!args) |
c906108c SS |
5100 | error ("remote-packet command requires packet text as argument"); |
5101 | ||
5102 | puts_filtered ("sending: "); | |
5103 | print_packet (args); | |
5104 | puts_filtered ("\n"); | |
5105 | putpkt (args); | |
5106 | ||
d01949b6 | 5107 | getpkt (buf, (rs->remote_packet_size), 0); |
c906108c SS |
5108 | puts_filtered ("received: "); |
5109 | print_packet (buf); | |
5110 | puts_filtered ("\n"); | |
5111 | } | |
5112 | ||
5113 | #if 0 | |
5114 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
5115 | ||
a14ed312 | 5116 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5117 | |
a14ed312 | 5118 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5119 | |
a14ed312 | 5120 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5121 | |
a14ed312 | 5122 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5123 | |
a14ed312 | 5124 | int get_and_display_threadinfo (threadref * ref); |
c906108c | 5125 | |
a14ed312 | 5126 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5127 | |
a14ed312 | 5128 | static int thread_display_step (threadref * ref, void *context); |
c906108c | 5129 | |
a14ed312 | 5130 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5131 | |
a14ed312 | 5132 | static void init_remote_threadtests (void); |
c906108c | 5133 | |
c5aa993b | 5134 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
5135 | |
5136 | static void | |
fba45db2 | 5137 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5138 | { |
5139 | int sample_thread = SAMPLE_THREAD; | |
5140 | ||
5141 | printf_filtered ("Remote threadset test\n"); | |
5142 | set_thread (sample_thread, 1); | |
5143 | } | |
5144 | ||
5145 | ||
5146 | static void | |
fba45db2 | 5147 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5148 | { |
5149 | int sample_thread = SAMPLE_THREAD; | |
5150 | ||
39f77062 | 5151 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5152 | printf_filtered ("PASS: Thread alive test\n"); |
5153 | else | |
5154 | printf_filtered ("FAIL: Thread alive test\n"); | |
5155 | } | |
5156 | ||
a14ed312 | 5157 | void output_threadid (char *title, threadref * ref); |
c906108c SS |
5158 | |
5159 | void | |
fba45db2 | 5160 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5161 | { |
5162 | char hexid[20]; | |
5163 | ||
5164 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
5165 | hexid[16] = 0; | |
5166 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5167 | } | |
5168 | ||
5169 | static void | |
fba45db2 | 5170 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5171 | { |
5172 | int startflag = 1; | |
5173 | threadref nextthread; | |
5174 | int done, result_count; | |
5175 | threadref threadlist[3]; | |
5176 | ||
5177 | printf_filtered ("Remote Threadlist test\n"); | |
5178 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5179 | &result_count, &threadlist[0])) | |
5180 | printf_filtered ("FAIL: threadlist test\n"); | |
5181 | else | |
5182 | { | |
5183 | threadref *scan = threadlist; | |
5184 | threadref *limit = scan + result_count; | |
5185 | ||
5186 | while (scan < limit) | |
5187 | output_threadid (" thread ", scan++); | |
5188 | } | |
5189 | } | |
5190 | ||
5191 | void | |
fba45db2 | 5192 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5193 | { |
5194 | output_threadid ("Threadid: ", &info->threadid); | |
5195 | printf_filtered ("Name: %s\n ", info->shortname); | |
5196 | printf_filtered ("State: %s\n", info->display); | |
5197 | printf_filtered ("other: %s\n\n", info->more_display); | |
5198 | } | |
5199 | ||
5200 | int | |
fba45db2 | 5201 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5202 | { |
5203 | int result; | |
5204 | int set; | |
5205 | struct gdb_ext_thread_info threadinfo; | |
5206 | ||
5207 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5208 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5209 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5210 | display_thread_info (&threadinfo); | |
5211 | return result; | |
5212 | } | |
5213 | ||
5214 | static void | |
fba45db2 | 5215 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5216 | { |
5217 | int athread = SAMPLE_THREAD; | |
5218 | threadref thread; | |
5219 | int set; | |
5220 | ||
5221 | int_to_threadref (&thread, athread); | |
5222 | printf_filtered ("Remote Threadinfo test\n"); | |
5223 | if (!get_and_display_threadinfo (&thread)) | |
5224 | printf_filtered ("FAIL cannot get thread info\n"); | |
5225 | } | |
5226 | ||
5227 | static int | |
fba45db2 | 5228 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5229 | { |
5230 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5231 | return get_and_display_threadinfo (ref); | |
5232 | } | |
5233 | ||
5234 | static void | |
fba45db2 | 5235 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5236 | { |
5237 | printf_filtered ("Remote Threadlist update test\n"); | |
5238 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5239 | } | |
5240 | ||
5241 | static void | |
5242 | init_remote_threadtests (void) | |
5243 | { | |
5244 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
5245 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
5246 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
5247 | "Fetch and display info about one thread"); | |
5248 | add_com ("tset", class_obscure, threadset_test_cmd, | |
5249 | "Test setting to a different thread"); | |
5250 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
5251 | "Iterate through updating all remote thread info"); | |
5252 | add_com ("talive", class_obscure, threadalive_test, | |
5253 | " Remote thread alive test "); | |
5254 | } | |
5255 | ||
5256 | #endif /* 0 */ | |
5257 | ||
f3fb8c85 MS |
5258 | /* Convert a thread ID to a string. Returns the string in a static |
5259 | buffer. */ | |
5260 | ||
5261 | static char * | |
39f77062 | 5262 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 MS |
5263 | { |
5264 | static char buf[30]; | |
5265 | ||
39f77062 | 5266 | sprintf (buf, "Thread %d", PIDGET (ptid)); |
f3fb8c85 MS |
5267 | return buf; |
5268 | } | |
5269 | ||
c906108c | 5270 | static void |
fba45db2 | 5271 | init_remote_ops (void) |
c906108c | 5272 | { |
c5aa993b | 5273 | remote_ops.to_shortname = "remote"; |
c906108c | 5274 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5275 | remote_ops.to_doc = |
c906108c | 5276 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5277 | Specify the serial device it is connected to\n\ |
5278 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5279 | remote_ops.to_open = remote_open; |
5280 | remote_ops.to_close = remote_close; | |
c906108c | 5281 | remote_ops.to_detach = remote_detach; |
c5aa993b | 5282 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5283 | remote_ops.to_wait = remote_wait; |
5284 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5285 | remote_ops.to_store_registers = remote_store_registers; | |
5286 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
5287 | remote_ops.to_xfer_memory = remote_xfer_memory; |
5288 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
5289 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5290 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5291 | remote_ops.to_kill = remote_kill; |
5292 | remote_ops.to_load = generic_load; | |
c906108c SS |
5293 | remote_ops.to_mourn_inferior = remote_mourn; |
5294 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5295 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5296 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5297 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c SS |
5298 | remote_ops.to_stop = remote_stop; |
5299 | remote_ops.to_query = remote_query; | |
96baa820 | 5300 | remote_ops.to_rcmd = remote_rcmd; |
c906108c | 5301 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5302 | remote_ops.to_has_all_memory = 1; |
5303 | remote_ops.to_has_memory = 1; | |
5304 | remote_ops.to_has_stack = 1; | |
5305 | remote_ops.to_has_registers = 1; | |
5306 | remote_ops.to_has_execution = 1; | |
5307 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5308 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5309 | } |
5310 | ||
5311 | /* Set up the extended remote vector by making a copy of the standard | |
5312 | remote vector and adding to it. */ | |
5313 | ||
5314 | static void | |
fba45db2 | 5315 | init_extended_remote_ops (void) |
c906108c SS |
5316 | { |
5317 | extended_remote_ops = remote_ops; | |
5318 | ||
0f71a2f6 | 5319 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5320 | extended_remote_ops.to_longname = |
c906108c | 5321 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5322 | extended_remote_ops.to_doc = |
c906108c SS |
5323 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5324 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5325 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5326 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5327 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5328 | } |
5329 | ||
5330 | /* | |
5331 | * Command: info remote-process | |
5332 | * | |
5333 | * This implements Cisco's version of the "info proc" command. | |
5334 | * | |
5335 | * This query allows the target stub to return an arbitrary string | |
5336 | * (or strings) giving arbitrary information about the target process. | |
5337 | * This is optional; the target stub isn't required to implement it. | |
5338 | * | |
5339 | * Syntax: qfProcessInfo request first string | |
5340 | * qsProcessInfo request subsequent string | |
5341 | * reply: 'O'<hex-encoded-string> | |
5342 | * 'l' last reply (empty) | |
5343 | */ | |
5344 | ||
5345 | static void | |
c2d11a7d | 5346 | remote_info_process (char *args, int from_tty) |
0f71a2f6 | 5347 | { |
d01949b6 AC |
5348 | struct remote_state *rs = get_remote_state (); |
5349 | char *buf = alloca (rs->remote_packet_size); | |
0f71a2f6 JM |
5350 | |
5351 | if (remote_desc == 0) | |
5352 | error ("Command can only be used when connected to the remote target."); | |
5353 | ||
5354 | putpkt ("qfProcessInfo"); | |
d01949b6 | 5355 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 | 5356 | if (buf[0] == 0) |
c5aa993b | 5357 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
5358 | |
5359 | if (buf[0] == 'E') | |
5360 | error ("info proc: target error."); | |
5361 | ||
c5aa993b | 5362 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
5363 | { |
5364 | remote_console_output (&buf[1]); | |
5365 | putpkt ("qsProcessInfo"); | |
d01949b6 | 5366 | getpkt (buf, (rs->remote_packet_size), 0); |
0f71a2f6 JM |
5367 | } |
5368 | } | |
5369 | ||
5370 | /* | |
5371 | * Target Cisco | |
5372 | */ | |
5373 | ||
5374 | static void | |
c2d11a7d | 5375 | remote_cisco_open (char *name, int from_tty) |
0f71a2f6 JM |
5376 | { |
5377 | if (name == 0) | |
5378 | error ( | |
c5aa993b | 5379 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
5380 | device is attached to the remote system (e.g. host:port)."); |
5381 | ||
6426a772 JM |
5382 | /* See FIXME above */ |
5383 | wait_forever_enabled_p = 1; | |
5384 | ||
0f71a2f6 JM |
5385 | target_preopen (from_tty); |
5386 | ||
5387 | unpush_target (&remote_cisco_ops); | |
5388 | ||
2cd58942 | 5389 | remote_desc = serial_open (name); |
0f71a2f6 JM |
5390 | if (!remote_desc) |
5391 | perror_with_name (name); | |
5392 | ||
5393 | /* | |
5394 | * If a baud rate was specified on the gdb command line it will | |
5395 | * be greater than the initial value of -1. If it is, use it otherwise | |
5396 | * default to 9600 | |
5397 | */ | |
5398 | ||
5399 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
2cd58942 | 5400 | if (serial_setbaudrate (remote_desc, baud_rate)) |
0f71a2f6 | 5401 | { |
2cd58942 | 5402 | serial_close (remote_desc); |
0f71a2f6 JM |
5403 | perror_with_name (name); |
5404 | } | |
5405 | ||
2cd58942 | 5406 | serial_raw (remote_desc); |
0f71a2f6 JM |
5407 | |
5408 | /* If there is something sitting in the buffer we might take it as a | |
5409 | response to a command, which would be bad. */ | |
2cd58942 | 5410 | serial_flush_input (remote_desc); |
0f71a2f6 JM |
5411 | |
5412 | if (from_tty) | |
5413 | { | |
5414 | puts_filtered ("Remote debugging using "); | |
5415 | puts_filtered (name); | |
5416 | puts_filtered ("\n"); | |
5417 | } | |
5418 | ||
5419 | remote_cisco_mode = 1; | |
5420 | ||
5421 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
5422 | ||
d471ea57 | 5423 | init_all_packet_configs (); |
0f71a2f6 | 5424 | |
c5aa993b | 5425 | general_thread = -2; |
0f71a2f6 JM |
5426 | continue_thread = -2; |
5427 | ||
9d1f7ab2 MS |
5428 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
5429 | use_threadinfo_query = 1; | |
5430 | use_threadextra_query = 1; | |
5431 | ||
0f71a2f6 JM |
5432 | /* Without this, some commands which require an active target (such |
5433 | as kill) won't work. This variable serves (at least) double duty | |
5434 | as both the pid of the target process (if it has such), and as a | |
5435 | flag indicating that a target is active. These functions should | |
5436 | be split out into seperate variables, especially since GDB will | |
5437 | someday have a notion of debugging several processes. */ | |
39f77062 | 5438 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
0f71a2f6 JM |
5439 | |
5440 | /* Start the remote connection; if error (0), discard this target. */ | |
5441 | ||
c5aa993b JM |
5442 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
5443 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
5444 | RETURN_MASK_ALL)) |
5445 | { | |
5446 | pop_target (); | |
5447 | return; | |
5448 | } | |
5449 | } | |
5450 | ||
5451 | static void | |
c2d11a7d | 5452 | remote_cisco_close (int quitting) |
0f71a2f6 JM |
5453 | { |
5454 | remote_cisco_mode = 0; | |
5455 | remote_close (quitting); | |
5456 | } | |
5457 | ||
c5aa993b | 5458 | static void |
8ab86381 | 5459 | remote_cisco_mourn (void) |
0f71a2f6 JM |
5460 | { |
5461 | remote_mourn_1 (&remote_cisco_ops); | |
5462 | } | |
5463 | ||
c5aa993b JM |
5464 | enum |
5465 | { | |
5466 | READ_MORE, | |
5467 | FATAL_ERROR, | |
5468 | ENTER_DEBUG, | |
0f71a2f6 | 5469 | DISCONNECT_TELNET |
c5aa993b JM |
5470 | } |
5471 | minitelnet_return; | |
0f71a2f6 | 5472 | |
1ff9c3d6 AC |
5473 | /* Shared between readsocket() and readtty(). The size is arbitrary, |
5474 | however all targets are known to support a 400 character packet. */ | |
5475 | static char tty_input[400]; | |
0f71a2f6 JM |
5476 | |
5477 | static int escape_count; | |
5478 | static int echo_check; | |
5479 | extern int quit_flag; | |
5480 | ||
5481 | static int | |
c2d11a7d | 5482 | readsocket (void) |
0f71a2f6 JM |
5483 | { |
5484 | int data; | |
5485 | ||
5486 | /* Loop until the socket doesn't have any more data */ | |
5487 | ||
c5aa993b | 5488 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
5489 | { |
5490 | /* Check for the escape sequence */ | |
c5aa993b | 5491 | if (data == '|') |
0f71a2f6 JM |
5492 | { |
5493 | /* If this is the fourth escape, get out */ | |
c5aa993b | 5494 | if (++escape_count == 4) |
0f71a2f6 JM |
5495 | { |
5496 | return ENTER_DEBUG; | |
5497 | } | |
c5aa993b JM |
5498 | else |
5499 | { /* This is a '|', but not the fourth in a row. | |
5500 | Continue without echoing it. If it isn't actually | |
5501 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
5502 | continue; |
5503 | } | |
5504 | } | |
c5aa993b JM |
5505 | else |
5506 | /* Not a '|' */ | |
5507 | { | |
0f71a2f6 JM |
5508 | /* Ensure any pending '|'s are flushed. */ |
5509 | ||
c5aa993b JM |
5510 | for (; escape_count > 0; escape_count--) |
5511 | putchar ('|'); | |
0f71a2f6 | 5512 | } |
0f71a2f6 | 5513 | |
c5aa993b JM |
5514 | if (data == '\r') /* If this is a return character, */ |
5515 | continue; /* - just supress it. */ | |
5516 | ||
5517 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
5518 | { |
5519 | if (tty_input[echo_check] == data) | |
5520 | { | |
1ff9c3d6 | 5521 | gdb_assert (echo_check <= sizeof (tty_input)); |
c5aa993b JM |
5522 | echo_check++; /* Character matched user input: */ |
5523 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 5524 | } |
c5aa993b JM |
5525 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
5526 | { /* End of the line (and of echo checking). */ | |
5527 | echo_check = -1; /* No more echo supression */ | |
5528 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
5529 | } |
5530 | else | |
c5aa993b JM |
5531 | { /* Failed check for echo of user input. |
5532 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
5533 | int j; |
5534 | ||
c5aa993b | 5535 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
5536 | putchar (tty_input[j]); |
5537 | echo_check = -1; | |
5538 | } | |
5539 | } | |
c5aa993b | 5540 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
5541 | } |
5542 | ||
c5aa993b JM |
5543 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
5544 | return READ_MORE; /* Try to read some more */ | |
5545 | else | |
5546 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
5547 | } |
5548 | ||
5549 | static int | |
c2d11a7d | 5550 | readtty (void) |
0f71a2f6 | 5551 | { |
0f71a2f6 JM |
5552 | int tty_bytecount; |
5553 | ||
5554 | /* First, read a buffer full from the terminal */ | |
5555 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 5556 | if (tty_bytecount == -1) |
0f71a2f6 JM |
5557 | { |
5558 | perror ("readtty: read failed"); | |
5559 | return FATAL_ERROR; | |
5560 | } | |
5561 | ||
5562 | /* Remove a quoted newline. */ | |
5563 | if (tty_input[tty_bytecount - 1] == '\n' && | |
5564 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
5565 | { | |
c5aa993b JM |
5566 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
5567 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
5568 | } |
5569 | ||
5570 | /* Turn trailing newlines into returns */ | |
5571 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 5572 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
5573 | |
5574 | /* If the line consists of a ~, enter debugging mode. */ | |
5575 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
5576 | return ENTER_DEBUG; | |
5577 | ||
5578 | /* Make this a zero terminated string and write it out */ | |
5579 | tty_input[tty_bytecount] = 0; | |
2cd58942 | 5580 | if (serial_write (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
5581 | { |
5582 | perror_with_name ("readtty: write failed"); | |
5583 | return FATAL_ERROR; | |
5584 | } | |
5585 | ||
5586 | return READ_MORE; | |
5587 | } | |
5588 | ||
5589 | static int | |
c2d11a7d | 5590 | minitelnet (void) |
0f71a2f6 JM |
5591 | { |
5592 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
5593 | int tablesize; /* max number of FDs for select */ |
5594 | int status; | |
5595 | int quit_count = 0; | |
0f71a2f6 JM |
5596 | |
5597 | extern int escape_count; /* global shared by readsocket */ | |
5598 | extern int echo_check; /* ditto */ | |
5599 | ||
5600 | escape_count = 0; | |
c5aa993b | 5601 | echo_check = -1; |
0f71a2f6 JM |
5602 | |
5603 | tablesize = 8 * sizeof (input); | |
5604 | ||
c5aa993b | 5605 | for (;;) |
0f71a2f6 JM |
5606 | { |
5607 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
5608 | this must be done *before* the select as there may be |
5609 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 5610 | |
c5aa993b | 5611 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
5612 | { |
5613 | error ("Debugging terminated by communications error"); | |
5614 | } | |
c5aa993b | 5615 | else if (status != READ_MORE) |
0f71a2f6 JM |
5616 | { |
5617 | return (status); | |
5618 | } | |
5619 | ||
c5aa993b | 5620 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
5621 | |
5622 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 5623 | |
0f71a2f6 | 5624 | FD_ZERO (&input); |
c5aa993b | 5625 | FD_SET (fileno (stdin), &input); |
2cd58942 | 5626 | FD_SET (deprecated_serial_fd (remote_desc), &input); |
0f71a2f6 JM |
5627 | |
5628 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 5629 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
5630 | { |
5631 | error ("Communications error on select %d", errno); | |
5632 | } | |
5633 | ||
5634 | /* Handle Control-C typed */ | |
5635 | ||
c5aa993b | 5636 | if (quit_flag) |
0f71a2f6 JM |
5637 | { |
5638 | if ((++quit_count) == 2) | |
5639 | { | |
5640 | if (query ("Interrupt GDB? ")) | |
5641 | { | |
5642 | printf_filtered ("Interrupted by user.\n"); | |
5643 | return_to_top_level (RETURN_QUIT); | |
5644 | } | |
5645 | quit_count = 0; | |
5646 | } | |
5647 | quit_flag = 0; | |
5648 | ||
5649 | if (remote_break) | |
2cd58942 | 5650 | serial_send_break (remote_desc); |
0f71a2f6 | 5651 | else |
2cd58942 | 5652 | serial_write (remote_desc, "\003", 1); |
0f71a2f6 JM |
5653 | |
5654 | continue; | |
5655 | } | |
5656 | ||
5657 | /* Handle console input */ | |
5658 | ||
c5aa993b | 5659 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
5660 | { |
5661 | quit_count = 0; | |
5662 | echo_check = 0; | |
5663 | status = readtty (); | |
5664 | if (status == READ_MORE) | |
5665 | continue; | |
5666 | ||
5667 | return status; /* telnet session ended */ | |
5668 | } | |
5669 | } | |
5670 | } | |
5671 | ||
39f77062 KB |
5672 | static ptid_t |
5673 | remote_cisco_wait (ptid_t ptid, struct target_waitstatus *status) | |
0f71a2f6 | 5674 | { |
c5aa993b | 5675 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
5676 | { |
5677 | error ("Debugging session terminated by protocol error"); | |
5678 | } | |
5679 | putpkt ("?"); | |
39f77062 | 5680 | return remote_wait (ptid, status); |
0f71a2f6 JM |
5681 | } |
5682 | ||
5683 | static void | |
fba45db2 | 5684 | init_remote_cisco_ops (void) |
0f71a2f6 JM |
5685 | { |
5686 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
5687 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
5688 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
5689 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
5690 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
5691 | remote_cisco_ops.to_open = remote_cisco_open; |
5692 | remote_cisco_ops.to_close = remote_cisco_close; | |
5693 | remote_cisco_ops.to_detach = remote_detach; | |
5694 | remote_cisco_ops.to_resume = remote_resume; | |
5695 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
5696 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
5697 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
5698 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
5699 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
5700 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
5701 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5702 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
5703 | remote_cisco_ops.to_kill = remote_kill; |
5704 | remote_cisco_ops.to_load = generic_load; | |
5705 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
5706 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
5707 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5708 | remote_cisco_ops.to_pid_to_str = remote_pid_to_str; |
5709 | remote_cisco_ops.to_extra_thread_info = remote_threads_extra_info; | |
c5aa993b JM |
5710 | remote_cisco_ops.to_stratum = process_stratum; |
5711 | remote_cisco_ops.to_has_all_memory = 1; | |
5712 | remote_cisco_ops.to_has_memory = 1; | |
5713 | remote_cisco_ops.to_has_stack = 1; | |
5714 | remote_cisco_ops.to_has_registers = 1; | |
5715 | remote_cisco_ops.to_has_execution = 1; | |
5716 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
5717 | } |
5718 | ||
6426a772 JM |
5719 | static int |
5720 | remote_can_async_p (void) | |
5721 | { | |
5722 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5723 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5724 | } |
5725 | ||
5726 | static int | |
5727 | remote_is_async_p (void) | |
5728 | { | |
5729 | /* We're async whenever the serial device is. */ | |
2cd58942 | 5730 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5731 | } |
5732 | ||
2acceee2 JM |
5733 | /* Pass the SERIAL event on and up to the client. One day this code |
5734 | will be able to delay notifying the client of an event until the | |
5735 | point where an entire packet has been received. */ | |
5736 | ||
5737 | static void (*async_client_callback) (enum inferior_event_type event_type, void *context); | |
5738 | static void *async_client_context; | |
5739 | static serial_event_ftype remote_async_serial_handler; | |
5740 | ||
6426a772 | 5741 | static void |
819cc324 | 5742 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5743 | { |
2acceee2 JM |
5744 | /* Don't propogate error information up to the client. Instead let |
5745 | the client find out about the error by querying the target. */ | |
5746 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5747 | } | |
5748 | ||
5749 | static void | |
5750 | remote_async (void (*callback) (enum inferior_event_type event_type, void *context), void *context) | |
5751 | { | |
ed9a39eb | 5752 | if (current_target.to_async_mask_value == 0) |
8e65ff28 AC |
5753 | internal_error (__FILE__, __LINE__, |
5754 | "Calling remote_async when async is masked"); | |
ed9a39eb | 5755 | |
2acceee2 JM |
5756 | if (callback != NULL) |
5757 | { | |
2cd58942 | 5758 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5759 | async_client_callback = callback; |
5760 | async_client_context = context; | |
5761 | } | |
5762 | else | |
2cd58942 | 5763 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5764 | } |
5765 | ||
43ff13b4 JM |
5766 | /* Target async and target extended-async. |
5767 | ||
5768 | This are temporary targets, until it is all tested. Eventually | |
5769 | async support will be incorporated int the usual 'remote' | |
5770 | target. */ | |
5771 | ||
5772 | static void | |
c2d11a7d | 5773 | init_remote_async_ops (void) |
43ff13b4 JM |
5774 | { |
5775 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
5776 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
5777 | remote_async_ops.to_doc = | |
43ff13b4 JM |
5778 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5779 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5780 | remote_async_ops.to_open = remote_async_open; |
5781 | remote_async_ops.to_close = remote_close; | |
5782 | remote_async_ops.to_detach = remote_async_detach; | |
5783 | remote_async_ops.to_resume = remote_async_resume; | |
5784 | remote_async_ops.to_wait = remote_async_wait; | |
5785 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5786 | remote_async_ops.to_store_registers = remote_store_registers; | |
5787 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
5788 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
5789 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
5790 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5791 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
6426a772 JM |
5792 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5793 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5794 | remote_async_ops.to_kill = remote_async_kill; |
5795 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5796 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5797 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5798 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5799 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5800 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 JM |
5801 | remote_async_ops.to_stop = remote_stop; |
5802 | remote_async_ops.to_query = remote_query; | |
96baa820 | 5803 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5804 | remote_async_ops.to_stratum = process_stratum; |
5805 | remote_async_ops.to_has_all_memory = 1; | |
5806 | remote_async_ops.to_has_memory = 1; | |
5807 | remote_async_ops.to_has_stack = 1; | |
5808 | remote_async_ops.to_has_registers = 1; | |
5809 | remote_async_ops.to_has_execution = 1; | |
5810 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5811 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5812 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5813 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5814 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5815 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5816 | } |
5817 | ||
5818 | /* Set up the async extended remote vector by making a copy of the standard | |
5819 | remote vector and adding to it. */ | |
5820 | ||
5821 | static void | |
c2d11a7d | 5822 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5823 | { |
5824 | extended_async_remote_ops = remote_async_ops; | |
5825 | ||
5826 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5827 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5828 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5829 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5830 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5831 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5832 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5833 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5834 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5835 | } | |
5836 | ||
5a2468f5 | 5837 | static void |
c2d11a7d | 5838 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5839 | { |
5a2468f5 JM |
5840 | } |
5841 | ||
d471ea57 AC |
5842 | static void |
5843 | show_remote_cmd (char *args, int from_tty) | |
5844 | { | |
44eaed12 | 5845 | |
d471ea57 | 5846 | show_remote_protocol_Z_packet_cmd (args, from_tty); |
44eaed12 C |
5847 | show_remote_protocol_e_packet_cmd (args, from_tty); |
5848 | show_remote_protocol_E_packet_cmd (args, from_tty); | |
d471ea57 | 5849 | show_remote_protocol_P_packet_cmd (args, from_tty); |
dc8acb97 | 5850 | show_remote_protocol_qSymbol_packet_cmd (args, from_tty); |
d471ea57 AC |
5851 | show_remote_protocol_binary_download_cmd (args, from_tty); |
5852 | } | |
5a2468f5 | 5853 | |
0f71a2f6 | 5854 | static void |
fba45db2 | 5855 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5856 | { |
d696208f | 5857 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5858 | } |
5859 | ||
dc8acb97 MS |
5860 | /* Saved pointer to previous owner of the new_objfile event. */ |
5861 | static void (*remote_new_objfile_chain) (struct objfile *); | |
5862 | ||
5863 | /* Function to be called whenever a new objfile (shlib) is detected. */ | |
5864 | static void | |
5865 | remote_new_objfile (struct objfile *objfile) | |
5866 | { | |
5867 | if (remote_desc != 0) /* Have a remote connection */ | |
5868 | { | |
5869 | remote_check_symbols (objfile); | |
5870 | } | |
5871 | /* Call predecessor on chain, if any. */ | |
5872 | if (remote_new_objfile_chain != 0 && | |
5873 | remote_desc == 0) | |
5874 | remote_new_objfile_chain (objfile); | |
5875 | } | |
5876 | ||
c906108c | 5877 | void |
fba45db2 | 5878 | _initialize_remote (void) |
c906108c | 5879 | { |
5a2468f5 JM |
5880 | static struct cmd_list_element *remote_set_cmdlist; |
5881 | static struct cmd_list_element *remote_show_cmdlist; | |
11cf8741 | 5882 | struct cmd_list_element *tmpcmd; |
5a2468f5 | 5883 | |
0f71a2f6 | 5884 | /* architecture specific data */ |
d01949b6 AC |
5885 | remote_gdbarch_data_handle = register_gdbarch_data (init_remote_state, |
5886 | free_remote_state); | |
5887 | ||
5888 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5889 | that the remote protocol has been initialized. */ | |
5890 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
11cf8741 JM |
5891 | register_gdbarch_swap (&remote_address_size, |
5892 | sizeof (&remote_address_size), NULL); | |
0f71a2f6 JM |
5893 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); |
5894 | ||
c906108c SS |
5895 | init_remote_ops (); |
5896 | add_target (&remote_ops); | |
5897 | ||
5898 | init_extended_remote_ops (); | |
5899 | add_target (&extended_remote_ops); | |
cce74817 | 5900 | |
43ff13b4 JM |
5901 | init_remote_async_ops (); |
5902 | add_target (&remote_async_ops); | |
5903 | ||
5904 | init_extended_async_remote_ops (); | |
5905 | add_target (&extended_async_remote_ops); | |
5906 | ||
0f71a2f6 JM |
5907 | init_remote_cisco_ops (); |
5908 | add_target (&remote_cisco_ops); | |
5909 | ||
dc8acb97 MS |
5910 | /* Hook into new objfile notification. */ |
5911 | remote_new_objfile_chain = target_new_objfile_hook; | |
5912 | target_new_objfile_hook = remote_new_objfile; | |
5913 | ||
c906108c SS |
5914 | #if 0 |
5915 | init_remote_threadtests (); | |
5916 | #endif | |
5917 | ||
d471ea57 AC |
5918 | /* set/show remote ... */ |
5919 | ||
5a2468f5 JM |
5920 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5921 | Remote protocol specific variables\n\ | |
5922 | Configure various remote-protocol specific variables such as\n\ | |
5923 | the packets being used", | |
cff3e48b | 5924 | &remote_set_cmdlist, "set remote ", |
5a2468f5 | 5925 | 0/*allow-unknown*/, &setlist); |
d471ea57 | 5926 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, "\ |
5a2468f5 JM |
5927 | Remote protocol specific variables\n\ |
5928 | Configure various remote-protocol specific variables such as\n\ | |
5929 | the packets being used", | |
cff3e48b | 5930 | &remote_show_cmdlist, "show remote ", |
5a2468f5 JM |
5931 | 0/*allow-unknown*/, &showlist); |
5932 | ||
c5aa993b | 5933 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5934 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5935 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5936 | &cmdlist); |
5937 | ||
5938 | add_cmd ("packet", class_maintenance, packet_command, | |
5939 | "Send an arbitrary packet to a remote target.\n\ | |
5940 | maintenance packet TEXT\n\ | |
5941 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5942 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5943 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5944 | terminating `#' character and checksum.", | |
5945 | &maintenancelist); | |
5946 | ||
c5aa993b | 5947 | add_show_from_set |
f3796e26 AC |
5948 | (add_set_boolean_cmd ("remotebreak", no_class, &remote_break, |
5949 | "Set whether to send break if interrupted.\n", | |
5950 | &setlist), | |
c906108c SS |
5951 | &showlist); |
5952 | ||
11cf8741 JM |
5953 | /* Install commands for configuring memory read/write packets. */ |
5954 | ||
5955 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, | |
5956 | "Set the maximum number of bytes per memory write packet (deprecated).\n", | |
5957 | &setlist); | |
4ad5b0f7 | 5958 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, |
11cf8741 JM |
5959 | "Show the maximum number of bytes per memory write packet (deprecated).\n", |
5960 | &showlist); | |
5961 | add_cmd ("memory-write-packet-size", no_class, | |
5962 | set_memory_write_packet_size, | |
5963 | "Set the maximum number of bytes per memory-write packet.\n" | |
5964 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5965 | "default packet size. The actual limit is further reduced\n" | |
5966 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5967 | "further restriction and ``limit'' to enable that restriction\n", | |
5968 | &remote_set_cmdlist); | |
5969 | add_cmd ("memory-read-packet-size", no_class, | |
5970 | set_memory_read_packet_size, | |
5971 | "Set the maximum number of bytes per memory-read packet.\n" | |
5972 | "Specify the number of bytes in a packet or 0 (zero) for the\n" | |
5973 | "default packet size. The actual limit is further reduced\n" | |
5974 | "dependent on the target. Specify ``fixed'' to disable the\n" | |
5975 | "further restriction and ``limit'' to enable that restriction\n", | |
5976 | &remote_set_cmdlist); | |
5977 | add_cmd ("memory-write-packet-size", no_class, | |
5978 | show_memory_write_packet_size, | |
5979 | "Show the maximum number of bytes per memory-write packet.\n", | |
5980 | &remote_show_cmdlist); | |
5981 | add_cmd ("memory-read-packet-size", no_class, | |
5982 | show_memory_read_packet_size, | |
5983 | "Show the maximum number of bytes per memory-read packet.\n", | |
5984 | &remote_show_cmdlist); | |
c906108c | 5985 | |
c5aa993b | 5986 | add_show_from_set |
c906108c | 5987 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5988 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5989 | "Set the maximum size of the address (in bits) \ |
5990 | in a memory packet.\n", | |
5991 | &setlist), | |
c5aa993b | 5992 | &showlist); |
c906108c | 5993 | |
96baa820 JM |
5994 | add_packet_config_cmd (&remote_protocol_binary_download, |
5995 | "X", "binary-download", | |
5996 | set_remote_protocol_binary_download_cmd, | |
5997 | show_remote_protocol_binary_download_cmd, | |
d471ea57 AC |
5998 | &remote_set_cmdlist, &remote_show_cmdlist, |
5999 | 1); | |
96baa820 JM |
6000 | #if 0 |
6001 | /* XXXX - should ``set remotebinarydownload'' be retained for | |
6002 | compatibility. */ | |
c5aa993b | 6003 | add_show_from_set |
b83266a0 SS |
6004 | (add_set_cmd ("remotebinarydownload", no_class, |
6005 | var_boolean, (char *) &remote_binary_download, | |
6006 | "Set binary downloads.\n", &setlist), | |
6007 | &showlist); | |
96baa820 | 6008 | #endif |
0f71a2f6 JM |
6009 | |
6010 | add_info ("remote-process", remote_info_process, | |
6011 | "Query the remote system for process info."); | |
6012 | ||
dc8acb97 MS |
6013 | add_packet_config_cmd (&remote_protocol_qSymbol, |
6014 | "qSymbol", "symbol-lookup", | |
6015 | set_remote_protocol_qSymbol_packet_cmd, | |
6016 | show_remote_protocol_qSymbol_packet_cmd, | |
6017 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6018 | 0); | |
6019 | ||
44eaed12 C |
6020 | add_packet_config_cmd (&remote_protocol_e, |
6021 | "e", "step-over-range", | |
6022 | set_remote_protocol_e_packet_cmd, | |
6023 | show_remote_protocol_e_packet_cmd, | |
6024 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6025 | 0); | |
6026 | ||
6027 | add_packet_config_cmd (&remote_protocol_E, | |
6028 | "E", "step-over-range-w-signal", | |
6029 | set_remote_protocol_E_packet_cmd, | |
6030 | show_remote_protocol_E_packet_cmd, | |
6031 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6032 | 0); | |
6033 | ||
d471ea57 AC |
6034 | add_packet_config_cmd (&remote_protocol_P, |
6035 | "P", "set-register", | |
5a2468f5 JM |
6036 | set_remote_protocol_P_packet_cmd, |
6037 | show_remote_protocol_P_packet_cmd, | |
d471ea57 AC |
6038 | &remote_set_cmdlist, &remote_show_cmdlist, |
6039 | 1); | |
6040 | ||
6041 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_SOFTWARE_BP], | |
6042 | "Z0", "software-breakpoint", | |
6043 | set_remote_protocol_Z_software_bp_packet_cmd, | |
6044 | show_remote_protocol_Z_software_bp_packet_cmd, | |
6045 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6046 | 0); | |
6047 | ||
6048 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_HARDWARE_BP], | |
6049 | "Z1", "hardware-breakpoint", | |
6050 | set_remote_protocol_Z_hardware_bp_packet_cmd, | |
6051 | show_remote_protocol_Z_hardware_bp_packet_cmd, | |
6052 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6053 | 0); | |
6054 | ||
6055 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_WRITE_WP], | |
6056 | "Z2", "write-watchpoint", | |
6057 | set_remote_protocol_Z_write_wp_packet_cmd, | |
6058 | show_remote_protocol_Z_write_wp_packet_cmd, | |
6059 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6060 | 0); | |
6061 | ||
6062 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_READ_WP], | |
6063 | "Z3", "read-watchpoint", | |
6064 | set_remote_protocol_Z_read_wp_packet_cmd, | |
6065 | show_remote_protocol_Z_read_wp_packet_cmd, | |
6066 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6067 | 0); | |
6068 | ||
6069 | add_packet_config_cmd (&remote_protocol_Z[Z_PACKET_ACCESS_WP], | |
6070 | "Z4", "access-watchpoint", | |
6071 | set_remote_protocol_Z_access_wp_packet_cmd, | |
6072 | show_remote_protocol_Z_access_wp_packet_cmd, | |
6073 | &remote_set_cmdlist, &remote_show_cmdlist, | |
6074 | 0); | |
6075 | ||
6076 | /* Keep the old ``set remote Z-packet ...'' working. */ | |
6077 | tmpcmd = add_set_auto_boolean_cmd ("Z-packet", class_obscure, | |
6078 | &remote_Z_packet_detect, | |
6079 | "\ | |
6080 | Set use of remote protocol `Z' packets", &remote_set_cmdlist); | |
6081 | tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd; | |
6082 | add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd, | |
6083 | "Show use of remote protocol `Z' packets ", | |
6084 | &remote_show_cmdlist); | |
c906108c | 6085 | } |