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