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