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