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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. */ | |
9846de1b | 21 | /* *INDENT-OFF* */ |
c906108c SS |
22 | /* Remote communication protocol. |
23 | ||
24 | A debug packet whose contents are <data> | |
25 | is encapsulated for transmission in the form: | |
26 | ||
27 | $ <data> # CSUM1 CSUM2 | |
28 | ||
29 | <data> must be ASCII alphanumeric and cannot include characters | |
30 | '$' or '#'. If <data> starts with two characters followed by | |
31 | ':', then the existing stubs interpret this as a sequence number. | |
32 | ||
33 | CSUM1 and CSUM2 are ascii hex representation of an 8-bit | |
34 | checksum of <data>, the most significant nibble is sent first. | |
35 | the hex digits 0-9,a-f are used. | |
36 | ||
37 | Receiver responds with: | |
38 | ||
39 | + - if CSUM is correct and ready for next packet | |
40 | - - if CSUM is incorrect | |
41 | ||
42 | <data> is as follows: | |
43 | Most values are encoded in ascii hex digits. Signal numbers are according | |
44 | to the numbering in target.h. | |
45 | ||
46 | Request Packet | |
47 | ||
48 | set thread Hct... Set thread for subsequent operations. | |
49 | c = 'c' for thread used in step and | |
50 | continue; t... can be -1 for all | |
51 | threads. | |
52 | c = 'g' for thread used in other | |
53 | operations. If zero, pick a thread, | |
54 | any thread. | |
55 | reply OK for success | |
56 | ENN for an error. | |
57 | ||
58 | read registers g | |
59 | reply XX....X Each byte of register data | |
60 | is described by two hex digits. | |
61 | Registers are in the internal order | |
62 | for GDB, and the bytes in a register | |
63 | are in the same order the machine uses. | |
64 | or ENN for an error. | |
65 | ||
66 | write regs GXX..XX Each byte of register data | |
67 | is described by two hex digits. | |
68 | reply OK for success | |
69 | ENN for an error | |
70 | ||
71 | write reg Pn...=r... Write register n... with value r..., | |
72 | which contains two hex digits for each | |
73 | byte in the register (target byte | |
74 | order). | |
75 | reply OK for success | |
76 | ENN for an error | |
77 | (not supported by all stubs). | |
78 | ||
79 | read mem mAA..AA,LLLL AA..AA is address, LLLL is length. | |
80 | reply XX..XX XX..XX is mem contents | |
81 | Can be fewer bytes than requested | |
82 | if able to read only part of the data. | |
83 | or ENN NN is errno | |
84 | ||
85 | write mem MAA..AA,LLLL:XX..XX | |
86 | AA..AA is address, | |
87 | LLLL is number of bytes, | |
88 | XX..XX is data | |
89 | reply OK for success | |
90 | ENN for an error (this includes the case | |
91 | where only part of the data was | |
92 | written). | |
93 | ||
94 | write mem XAA..AA,LLLL:XX..XX | |
95 | (binary) AA..AA is address, | |
96 | LLLL is number of bytes, | |
97 | XX..XX is binary data | |
98 | reply OK for success | |
99 | ENN for an error | |
100 | ||
101 | continue cAA..AA AA..AA is address to resume | |
102 | If AA..AA is omitted, | |
103 | resume at same address. | |
104 | ||
105 | step sAA..AA AA..AA is address to resume | |
106 | If AA..AA is omitted, | |
107 | resume at same address. | |
108 | ||
109 | continue with Csig;AA..AA Continue with signal sig (hex signal | |
110 | signal number). If ;AA..AA is omitted, | |
111 | resume at same address. | |
112 | ||
113 | step with Ssig;AA..AA Like 'C' but step not continue. | |
114 | signal | |
115 | ||
116 | last signal ? Reply the current reason for stopping. | |
117 | This is the same reply as is generated | |
118 | for step or cont : SAA where AA is the | |
119 | signal number. | |
120 | ||
121 | detach D Reply OK. | |
122 | ||
123 | There is no immediate reply to step or cont. | |
124 | The reply comes when the machine stops. | |
125 | It is SAA AA is the signal number. | |
126 | ||
127 | or... TAAn...:r...;n...:r...;n...:r...; | |
128 | AA = signal number | |
129 | n... = register number (hex) | |
130 | r... = register contents | |
131 | n... = `thread' | |
132 | r... = thread process ID. This is | |
133 | a hex integer. | |
134 | n... = other string not starting | |
135 | with valid hex digit. | |
136 | gdb should ignore this n,r pair | |
137 | and go on to the next. This way | |
138 | we can extend the protocol. | |
139 | or... WAA The process exited, and AA is | |
140 | the exit status. This is only | |
141 | applicable for certains sorts of | |
142 | targets. | |
143 | or... XAA The process terminated with signal | |
144 | AA. | |
0f71a2f6 JM |
145 | or (obsolete) NAA;tttttttt;dddddddd;bbbbbbbb |
146 | AA = signal number | |
147 | tttttttt = address of symbol "_start" | |
148 | dddddddd = base of data section | |
149 | bbbbbbbb = base of bss section. | |
150 | Note: only used by Cisco Systems | |
151 | targets. The difference between this | |
152 | reply and the "qOffsets" query is that | |
153 | the 'N' packet may arrive spontaneously | |
154 | whereas the 'qOffsets' is a query | |
155 | initiated by the host debugger. | |
c906108c SS |
156 | or... OXX..XX XX..XX is hex encoding of ASCII data. This |
157 | can happen at any time while the | |
158 | program is running and the debugger | |
159 | should continue to wait for | |
160 | 'W', 'T', etc. | |
161 | ||
162 | thread alive TXX Find out if the thread XX is alive. | |
163 | reply OK thread is still alive | |
164 | ENN thread is dead | |
165 | ||
166 | remote restart RXX Restart the remote server | |
167 | ||
168 | extended ops ! Use the extended remote protocol. | |
169 | Sticky -- only needs to be set once. | |
170 | ||
171 | kill request k | |
172 | ||
173 | toggle debug d toggle debug flag (see 386 & 68k stubs) | |
174 | reset r reset -- see sparc stub. | |
175 | reserved <other> On other requests, the stub should | |
176 | ignore the request and send an empty | |
177 | response ($#<checksum>). This way | |
178 | we can extend the protocol and GDB | |
179 | can tell whether the stub it is | |
180 | talking to uses the old or the new. | |
181 | search tAA:PP,MM Search backwards starting at address | |
182 | AA for a match with pattern PP and | |
183 | mask MM. PP and MM are 4 bytes. | |
184 | Not supported by all stubs. | |
185 | ||
186 | general query qXXXX Request info about XXXX. | |
187 | general set QXXXX=yyyy Set value of XXXX to yyyy. | |
188 | query sect offs qOffsets Get section offsets. Reply is | |
189 | Text=xxx;Data=yyy;Bss=zzz | |
190 | ||
191 | Responses can be run-length encoded to save space. A '*' means that | |
192 | the next character is an ASCII encoding giving a repeat count which | |
193 | stands for that many repititions of the character preceding the '*'. | |
194 | The encoding is n+29, yielding a printable character where n >=3 | |
195 | (which is where rle starts to win). Don't use an n > 126. | |
196 | ||
197 | So | |
198 | "0* " means the same as "0000". */ | |
9846de1b | 199 | /* *INDENT-ON* */ |
c906108c | 200 | |
c5aa993b JM |
201 | |
202 | ||
203 | ||
c906108c SS |
204 | #include "defs.h" |
205 | #include "gdb_string.h" | |
206 | #include <ctype.h> | |
207 | #include <fcntl.h> | |
208 | #include "frame.h" | |
209 | #include "inferior.h" | |
210 | #include "bfd.h" | |
211 | #include "symfile.h" | |
212 | #include "target.h" | |
213 | #include "wait.h" | |
c5aa993b | 214 | /*#include "terminal.h" */ |
c906108c SS |
215 | #include "gdbcmd.h" |
216 | #include "objfiles.h" | |
217 | #include "gdb-stabs.h" | |
218 | #include "gdbthread.h" | |
219 | ||
220 | #include "dcache.h" | |
221 | ||
7a292a7a | 222 | #include <ctype.h> |
9846de1b | 223 | #include <sys/time.h> |
c906108c SS |
224 | #ifdef USG |
225 | #include <sys/types.h> | |
226 | #endif | |
227 | ||
43ff13b4 JM |
228 | #include "event-loop.h" |
229 | ||
c906108c SS |
230 | #include <signal.h> |
231 | #include "serial.h" | |
232 | ||
233 | /* Prototypes for local functions */ | |
43ff13b4 JM |
234 | static void initialize_sigint_signal_handler PARAMS ((void)); |
235 | static void handle_remote_sigint PARAMS ((int)); | |
236 | static void handle_remote_sigint_twice PARAMS ((int)); | |
237 | static void async_remote_interrupt PARAMS ((gdb_client_data)); | |
238 | static void async_remote_interrupt_twice PARAMS ((gdb_client_data)); | |
239 | ||
240 | static void set_extended_protocol PARAMS ((struct continuation_arg *)); | |
c906108c | 241 | |
0f71a2f6 JM |
242 | static void build_remote_gdbarch_data PARAMS ((void)); |
243 | ||
c906108c SS |
244 | static int remote_write_bytes PARAMS ((CORE_ADDR memaddr, |
245 | char *myaddr, int len)); | |
246 | ||
247 | static int remote_read_bytes PARAMS ((CORE_ADDR memaddr, | |
248 | char *myaddr, int len)); | |
249 | ||
c5aa993b | 250 | static void remote_files_info PARAMS ((struct target_ops * ignore)); |
c906108c | 251 | |
c5aa993b | 252 | static int remote_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, |
c906108c SS |
253 | int len, int should_write, |
254 | struct target_ops * target)); | |
255 | ||
256 | static void remote_prepare_to_store PARAMS ((void)); | |
257 | ||
258 | static void remote_fetch_registers PARAMS ((int regno)); | |
259 | ||
260 | static void remote_resume PARAMS ((int pid, int step, | |
261 | enum target_signal siggnal)); | |
43ff13b4 | 262 | static void remote_async_resume PARAMS ((int pid, int step, |
c5aa993b | 263 | enum target_signal siggnal)); |
c906108c SS |
264 | |
265 | static int remote_start_remote PARAMS ((PTR)); | |
266 | ||
267 | static void remote_open PARAMS ((char *name, int from_tty)); | |
43ff13b4 | 268 | static void remote_async_open PARAMS ((char *name, int from_tty)); |
c906108c SS |
269 | |
270 | static void extended_remote_open PARAMS ((char *name, int from_tty)); | |
43ff13b4 | 271 | static void extended_remote_async_open PARAMS ((char *name, int from_tty)); |
c906108c SS |
272 | |
273 | static void remote_open_1 PARAMS ((char *, int, struct target_ops *, | |
274 | int extended_p)); | |
43ff13b4 | 275 | static void remote_async_open_1 PARAMS ((char *, int, struct target_ops *, |
c5aa993b | 276 | int extended_p)); |
c906108c SS |
277 | |
278 | static void remote_close PARAMS ((int quitting)); | |
279 | ||
280 | static void remote_store_registers PARAMS ((int regno)); | |
281 | ||
282 | static void remote_mourn PARAMS ((void)); | |
283 | ||
284 | static void extended_remote_restart PARAMS ((void)); | |
285 | ||
286 | static void extended_remote_mourn PARAMS ((void)); | |
287 | ||
288 | static void extended_remote_create_inferior PARAMS ((char *, char *, char **)); | |
43ff13b4 | 289 | static void extended_remote_async_create_inferior PARAMS ((char *, char *, char **)); |
c906108c SS |
290 | |
291 | static void remote_mourn_1 PARAMS ((struct target_ops *)); | |
292 | ||
293 | static void remote_send PARAMS ((char *buf)); | |
294 | ||
295 | static int readchar PARAMS ((int timeout)); | |
296 | ||
297 | static int remote_wait PARAMS ((int pid, struct target_waitstatus * status)); | |
43ff13b4 | 298 | static int remote_async_wait PARAMS ((int pid, struct target_waitstatus * status)); |
c906108c SS |
299 | |
300 | static void remote_kill PARAMS ((void)); | |
43ff13b4 | 301 | static void remote_async_kill PARAMS ((void)); |
c906108c SS |
302 | |
303 | static int tohex PARAMS ((int nib)); | |
304 | ||
305 | static void remote_detach PARAMS ((char *args, int from_tty)); | |
43ff13b4 | 306 | static void remote_async_detach PARAMS ((char *args, int from_tty)); |
c906108c SS |
307 | |
308 | static void remote_interrupt PARAMS ((int signo)); | |
309 | ||
7a292a7a SS |
310 | static void remote_interrupt_twice PARAMS ((int signo)); |
311 | ||
c906108c SS |
312 | static void interrupt_query PARAMS ((void)); |
313 | ||
314 | static void set_thread PARAMS ((int, int)); | |
315 | ||
316 | static int remote_thread_alive PARAMS ((int)); | |
317 | ||
318 | static void get_offsets PARAMS ((void)); | |
319 | ||
320 | static int read_frame PARAMS ((char *)); | |
321 | ||
322 | static int remote_insert_breakpoint PARAMS ((CORE_ADDR, char *)); | |
323 | ||
324 | static int remote_remove_breakpoint PARAMS ((CORE_ADDR, char *)); | |
325 | ||
326 | static int hexnumlen PARAMS ((ULONGEST num)); | |
327 | ||
328 | static void init_remote_ops PARAMS ((void)); | |
329 | ||
330 | static void init_extended_remote_ops PARAMS ((void)); | |
331 | ||
0f71a2f6 JM |
332 | static void init_remote_cisco_ops PARAMS ((void)); |
333 | ||
334 | static struct target_ops remote_cisco_ops; | |
335 | ||
c906108c SS |
336 | static void remote_stop PARAMS ((void)); |
337 | ||
338 | static int ishex PARAMS ((int ch, int *val)); | |
339 | ||
340 | static int stubhex PARAMS ((int ch)); | |
341 | ||
c5aa993b | 342 | static int remote_query PARAMS ((int /*char */ , char *, char *, int *)); |
c906108c SS |
343 | |
344 | static int hexnumstr PARAMS ((char *, ULONGEST)); | |
345 | ||
346 | static CORE_ADDR remote_address_masked PARAMS ((CORE_ADDR)); | |
347 | ||
348 | static void print_packet PARAMS ((char *)); | |
349 | ||
350 | static unsigned long crc32 PARAMS ((unsigned char *, int, unsigned int)); | |
351 | ||
352 | static void compare_sections_command PARAMS ((char *, int)); | |
353 | ||
354 | static void packet_command PARAMS ((char *, int)); | |
355 | ||
356 | static int stub_unpack_int PARAMS ((char *buff, int fieldlength)); | |
357 | ||
c906108c SS |
358 | static int remote_current_thread PARAMS ((int oldpid)); |
359 | ||
cce74817 | 360 | static void remote_find_new_threads PARAMS ((void)); |
c906108c SS |
361 | |
362 | static void record_currthread PARAMS ((int currthread)); | |
363 | ||
c906108c SS |
364 | /* exported functions */ |
365 | ||
366 | extern int fromhex PARAMS ((int a)); | |
367 | ||
368 | extern void getpkt PARAMS ((char *buf, int forever)); | |
369 | ||
370 | extern int putpkt PARAMS ((char *buf)); | |
371 | ||
372 | static int putpkt_binary PARAMS ((char *buf, int cnt)); | |
373 | ||
374 | void remote_console_output PARAMS ((char *)); | |
375 | ||
376 | static void check_binary_download PARAMS ((CORE_ADDR addr)); | |
377 | ||
5a2468f5 JM |
378 | #if __STDC__ |
379 | struct packet_config; | |
380 | #endif | |
381 | ||
382 | static void show_packet_config_cmd PARAMS ((struct packet_config * config)); | |
383 | ||
384 | static void set_packet_config_cmd PARAMS ((struct packet_config * config, | |
385 | struct cmd_list_element * c)); | |
386 | ||
387 | static void add_packet_config_cmd PARAMS ((struct packet_config * config, | |
388 | char *name, | |
389 | char *title, | |
390 | void (*set_func) (char *args, int from_tty, struct cmd_list_element * c), | |
391 | void (*show_func) (char *name, int from_tty), | |
392 | struct cmd_list_element **setlist, | |
393 | struct cmd_list_element **showlist)); | |
394 | ||
395 | static void init_packet_config PARAMS ((struct packet_config * config)); | |
396 | ||
397 | static void set_remote_protocol_P_packet_cmd PARAMS ((char *args, | |
398 | int from_tty, | |
399 | struct cmd_list_element * c)); | |
400 | ||
401 | static void show_remote_protocol_P_packet_cmd PARAMS ((char *args, | |
402 | int from_tty)); | |
403 | ||
404 | ||
405 | ||
406 | ||
c906108c SS |
407 | /* Define the target subroutine names */ |
408 | ||
409 | void open_remote_target PARAMS ((char *, int, struct target_ops *, int)); | |
410 | ||
411 | void _initialize_remote PARAMS ((void)); | |
412 | ||
413 | /* */ | |
414 | ||
415 | static struct target_ops remote_ops; | |
416 | ||
417 | static struct target_ops extended_remote_ops; | |
418 | ||
43ff13b4 JM |
419 | /* Temporary target ops. Just like the remote_ops and |
420 | extended_remote_ops, but with asynchronous support. */ | |
421 | static struct target_ops remote_async_ops; | |
422 | ||
423 | static struct target_ops extended_async_remote_ops; | |
424 | ||
c906108c SS |
425 | /* This was 5 seconds, which is a long time to sit and wait. |
426 | Unless this is going though some terminal server or multiplexer or | |
427 | other form of hairy serial connection, I would think 2 seconds would | |
428 | be plenty. */ | |
429 | ||
430 | /* Changed to allow option to set timeout value. | |
431 | was static int remote_timeout = 2; */ | |
432 | extern int remote_timeout; | |
433 | ||
434 | /* This variable chooses whether to send a ^C or a break when the user | |
435 | requests program interruption. Although ^C is usually what remote | |
436 | systems expect, and that is the default here, sometimes a break is | |
437 | preferable instead. */ | |
438 | ||
439 | static int remote_break; | |
440 | ||
c906108c SS |
441 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
442 | remote_open knows that we don't have a file open when the program | |
443 | starts. */ | |
444 | static serial_t remote_desc = NULL; | |
445 | ||
0f71a2f6 JM |
446 | /* This is set by the target (thru the 'S' message) |
447 | to denote that the target is in kernel mode. */ | |
448 | static int cisco_kernel_mode = 0; | |
449 | ||
c906108c SS |
450 | /* This variable (available to the user via "set remotebinarydownload") |
451 | dictates whether downloads are sent in binary (via the 'X' packet). | |
452 | We assume that the stub can, and attempt to do it. This will be cleared if | |
453 | the stub does not understand it. This switch is still needed, though | |
454 | in cases when the packet is supported in the stub, but the connection | |
455 | does not allow it (i.e., 7-bit serial connection only). */ | |
456 | static int remote_binary_download = 1; | |
c5aa993b | 457 | |
c906108c SS |
458 | /* Have we already checked whether binary downloads work? */ |
459 | static int remote_binary_checked; | |
460 | ||
cce74817 JM |
461 | /* Maximum number of bytes to read/write at once. The value here |
462 | is chosen to fill up a packet (the headers account for the 32). */ | |
463 | #define MAXBUFBYTES(N) (((N)-32)/2) | |
464 | ||
c906108c SS |
465 | /* Having this larger than 400 causes us to be incompatible with m68k-stub.c |
466 | and i386-stub.c. Normally, no one would notice because it only matters | |
467 | for writing large chunks of memory (e.g. in downloads). Also, this needs | |
468 | to be more than 400 if required to hold the registers (see below, where | |
469 | we round it up based on REGISTER_BYTES). */ | |
c906108c | 470 | /* Round up PBUFSIZ to hold all the registers, at least. */ |
cce74817 JM |
471 | #define PBUFSIZ ((REGISTER_BYTES > MAXBUFBYTES (400)) \ |
472 | ? (REGISTER_BYTES * 2 + 32) \ | |
473 | : 400) | |
c906108c SS |
474 | |
475 | ||
476 | /* This variable sets the number of bytes to be written to the target | |
477 | in a single packet. Normally PBUFSIZ is satisfactory, but some | |
478 | targets need smaller values (perhaps because the receiving end | |
479 | is slow). */ | |
480 | ||
cce74817 | 481 | static int remote_write_size; |
c906108c SS |
482 | |
483 | /* This variable sets the number of bits in an address that are to be | |
484 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
485 | leading zeros, the entire address would be sent. This variable | |
486 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
487 | initial implementation of remote.c restricted the address sent in | |
488 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
489 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
490 | address was never sent. Since fixing this bug may cause a break in | |
491 | some remote targets this variable is principly provided to | |
492 | facilitate backward compatibility. */ | |
493 | ||
494 | static int remote_address_size; | |
495 | ||
496 | /* This is the size (in chars) of the first response to the `g' command. This | |
497 | is used to limit the size of the memory read and write commands to prevent | |
498 | stub buffers from overflowing. The size does not include headers and | |
499 | trailers, it is only the payload size. */ | |
500 | ||
501 | static int remote_register_buf_size = 0; | |
502 | ||
5a2468f5 JM |
503 | /* Generic configuration support for packets the stub optionally |
504 | supports. Allows the user to specify the use of the packet as well | |
505 | as allowing GDB to auto-detect support in the remote stub. */ | |
506 | ||
507 | enum packet_support | |
508 | { | |
509 | PACKET_SUPPORT_UNKNOWN = 0, | |
510 | PACKET_ENABLE, | |
511 | PACKET_DISABLE | |
512 | }; | |
513 | ||
514 | enum packet_detect | |
515 | { | |
516 | PACKET_AUTO_DETECT = 0, | |
517 | PACKET_MANUAL_DETECT | |
518 | }; | |
519 | ||
520 | struct packet_config | |
521 | { | |
522 | char *state; | |
523 | char *name; | |
524 | char *title; | |
525 | enum packet_detect detect; | |
526 | enum packet_support support; | |
527 | }; | |
528 | ||
529 | static char packet_support_auto[] = "auto"; | |
530 | static char packet_enable[] = "enable"; | |
531 | static char packet_disable[] = "disable"; | |
532 | static char *packet_support_enums[] = | |
533 | { | |
534 | packet_support_auto, | |
535 | packet_enable, | |
536 | packet_disable, | |
537 | 0, | |
538 | }; | |
539 | ||
540 | static void | |
541 | set_packet_config_cmd (config, c) | |
542 | struct packet_config *config; | |
543 | struct cmd_list_element *c; | |
544 | { | |
545 | if (config->state == packet_enable) | |
546 | { | |
547 | config->detect = PACKET_MANUAL_DETECT; | |
548 | config->support = PACKET_ENABLE; | |
549 | } | |
550 | else if (config->state == packet_disable) | |
551 | { | |
552 | config->detect = PACKET_MANUAL_DETECT; | |
553 | config->support = PACKET_DISABLE; | |
554 | } | |
555 | else if (config->state == packet_support_auto) | |
556 | { | |
557 | config->detect = PACKET_AUTO_DETECT; | |
558 | config->support = PACKET_SUPPORT_UNKNOWN; | |
559 | } | |
560 | else | |
561 | fatal ("Bad enum value"); | |
562 | } | |
563 | ||
564 | static void | |
565 | show_packet_config_cmd (config) | |
566 | struct packet_config *config; | |
567 | { | |
568 | char *support = "internal-error"; | |
569 | switch (config->support) | |
570 | { | |
571 | case PACKET_ENABLE: | |
572 | support = "enabled"; | |
573 | break; | |
574 | case PACKET_DISABLE: | |
575 | support = "disabled"; | |
576 | break; | |
577 | case PACKET_SUPPORT_UNKNOWN: | |
578 | support = "unknown"; | |
579 | break; | |
580 | } | |
581 | switch (config->detect) | |
582 | { | |
583 | case PACKET_AUTO_DETECT: | |
584 | printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n", | |
585 | config->name, config->title, support); | |
586 | break; | |
587 | case PACKET_MANUAL_DETECT: | |
588 | printf_filtered ("Support for remote protocol `%s' (%s) is currently %s.\n", | |
589 | config->name, config->title, support); | |
590 | } | |
591 | } | |
592 | ||
593 | static void | |
594 | add_packet_config_cmd (config, name, title, set_func, show_func, | |
595 | setlist, showlist) | |
596 | struct packet_config *config; | |
597 | char *name; | |
598 | char *title; | |
599 | void (*set_func) PARAMS ((char *args, int from_tty, | |
600 | struct cmd_list_element * c)); | |
601 | void (*show_func) PARAMS ((char *name, int from_tty)); | |
602 | struct cmd_list_element **setlist; | |
603 | struct cmd_list_element **showlist; | |
604 | { | |
605 | struct cmd_list_element *c; | |
606 | char *set_doc; | |
607 | char *show_doc; | |
608 | char *full_name; | |
609 | config->name = name; | |
610 | config->title = title; | |
611 | asprintf (&set_doc, "Set use of remote protocol `%s' (%s) packet", | |
612 | name, title); | |
613 | asprintf (&show_doc, "Show current use of remote protocol `%s' (%s) packet", | |
614 | name, title); | |
615 | asprintf (&full_name, "%s-packet", name); | |
616 | c = add_set_enum_cmd (full_name, | |
617 | class_obscure, packet_support_enums, | |
618 | (char *) &config->state, | |
619 | set_doc, setlist); | |
620 | c->function.sfunc = set_func; | |
621 | add_cmd (full_name, class_obscure, show_func, show_doc, showlist); | |
622 | } | |
623 | ||
624 | static void | |
625 | init_packet_config (config) | |
626 | struct packet_config *config; | |
627 | { | |
628 | switch (config->detect) | |
629 | { | |
630 | case PACKET_AUTO_DETECT: | |
631 | config->support = PACKET_SUPPORT_UNKNOWN; | |
632 | break; | |
633 | case PACKET_MANUAL_DETECT: | |
634 | /* let the user beware */ | |
635 | break; | |
636 | } | |
637 | } | |
638 | ||
639 | /* Should we try the 'P' (set register) request? */ | |
640 | ||
641 | static struct packet_config remote_protocol_P; | |
642 | ||
643 | static void | |
644 | set_remote_protocol_P_packet_cmd (args, from_tty, c) | |
645 | char *args; | |
646 | int from_tty; | |
647 | struct cmd_list_element *c; | |
648 | { | |
649 | set_packet_config_cmd (&remote_protocol_P, c); | |
650 | } | |
651 | ||
652 | static void | |
653 | show_remote_protocol_P_packet_cmd (args, from_tty) | |
654 | char *args; | |
655 | int from_tty; | |
656 | { | |
657 | show_packet_config_cmd (&remote_protocol_P); | |
658 | } | |
659 | ||
c906108c | 660 | |
43ff13b4 JM |
661 | /* Tokens for use by the asynchronous signal handlers for SIGINT */ |
662 | PTR sigint_remote_twice_token; | |
663 | PTR sigint_remote_token; | |
664 | ||
c906108c SS |
665 | /* These are pointers to hook functions that may be set in order to |
666 | modify resume/wait behavior for a particular architecture. */ | |
667 | ||
668 | void (*target_resume_hook) PARAMS ((void)); | |
669 | void (*target_wait_loop_hook) PARAMS ((void)); | |
c906108c SS |
670 | \f |
671 | ||
c5aa993b | 672 | |
c906108c SS |
673 | /* These are the threads which we last sent to the remote system. |
674 | -1 for all or -2 for not sent yet. */ | |
675 | static int general_thread; | |
cce74817 | 676 | static int continue_thread; |
c906108c SS |
677 | |
678 | /* Call this function as a result of | |
679 | 1) A halt indication (T packet) containing a thread id | |
680 | 2) A direct query of currthread | |
681 | 3) Successful execution of set thread | |
682 | */ | |
683 | ||
684 | static void | |
685 | record_currthread (currthread) | |
686 | int currthread; | |
687 | { | |
c906108c | 688 | general_thread = currthread; |
cce74817 | 689 | |
c906108c SS |
690 | /* If this is a new thread, add it to GDB's thread list. |
691 | If we leave it up to WFI to do this, bad things will happen. */ | |
692 | if (!in_thread_list (currthread)) | |
0f71a2f6 JM |
693 | { |
694 | add_thread (currthread); | |
695 | printf_filtered ("[New %s]\n", target_pid_to_str (currthread)); | |
696 | } | |
c906108c SS |
697 | } |
698 | ||
699 | #define MAGIC_NULL_PID 42000 | |
700 | ||
701 | static void | |
702 | set_thread (th, gen) | |
703 | int th; | |
704 | int gen; | |
705 | { | |
085dd6e6 | 706 | char *buf = alloca (PBUFSIZ); |
cce74817 | 707 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
708 | |
709 | if (state == th) | |
710 | return; | |
711 | ||
712 | buf[0] = 'H'; | |
713 | buf[1] = gen ? 'g' : 'c'; | |
714 | if (th == MAGIC_NULL_PID) | |
715 | { | |
716 | buf[2] = '0'; | |
717 | buf[3] = '\0'; | |
718 | } | |
719 | else if (th < 0) | |
720 | sprintf (&buf[2], "-%x", -th); | |
721 | else | |
722 | sprintf (&buf[2], "%x", th); | |
723 | putpkt (buf); | |
724 | getpkt (buf, 0); | |
725 | if (gen) | |
c5aa993b | 726 | general_thread = th; |
c906108c | 727 | else |
cce74817 | 728 | continue_thread = th; |
c906108c SS |
729 | } |
730 | \f | |
731 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
732 | ||
733 | static int | |
cce74817 JM |
734 | remote_thread_alive (tid) |
735 | int tid; | |
c906108c | 736 | { |
cce74817 | 737 | char buf[16]; |
c906108c | 738 | |
cce74817 JM |
739 | if (tid < 0) |
740 | sprintf (buf, "T-%08x", -tid); | |
c906108c | 741 | else |
cce74817 | 742 | sprintf (buf, "T%08x", tid); |
c906108c SS |
743 | putpkt (buf); |
744 | getpkt (buf, 0); | |
745 | return (buf[0] == 'O' && buf[1] == 'K'); | |
746 | } | |
747 | ||
748 | /* About these extended threadlist and threadinfo packets. They are | |
749 | variable length packets but, the fields within them are often fixed | |
750 | length. They are redundent enough to send over UDP as is the | |
751 | remote protocol in general. There is a matching unit test module | |
752 | in libstub. */ | |
753 | ||
cce74817 JM |
754 | #define OPAQUETHREADBYTES 8 |
755 | ||
756 | /* a 64 bit opaque identifier */ | |
757 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
758 | ||
759 | /* WARNING: This threadref data structure comes from the remote O.S., libstub | |
760 | protocol encoding, and remote.c. it is not particularly changable */ | |
761 | ||
762 | /* Right now, the internal structure is int. We want it to be bigger. | |
763 | Plan to fix this. | |
c5aa993b | 764 | */ |
cce74817 | 765 | |
c5aa993b | 766 | typedef int gdb_threadref; /* internal GDB thread reference */ |
cce74817 JM |
767 | |
768 | /* gdb_ext_thread_info is an internal GDB data structure which is | |
769 | equivalint to the reply of the remote threadinfo packet */ | |
770 | ||
771 | struct gdb_ext_thread_info | |
c5aa993b JM |
772 | { |
773 | threadref threadid; /* External form of thread reference */ | |
774 | int active; /* Has state interesting to GDB? , regs, stack */ | |
775 | char display[256]; /* Brief state display, name, blocked/syspended */ | |
776 | char shortname[32]; /* To be used to name threads */ | |
777 | char more_display[256]; /* Long info, statistics, queue depth, whatever */ | |
778 | }; | |
cce74817 JM |
779 | |
780 | /* The volume of remote transfers can be limited by submitting | |
781 | a mask containing bits specifying the desired information. | |
782 | Use a union of these values as the 'selection' parameter to | |
783 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 784 | */ |
cce74817 JM |
785 | |
786 | #define TAG_THREADID 1 | |
787 | #define TAG_EXISTS 2 | |
788 | #define TAG_DISPLAY 4 | |
789 | #define TAG_THREADNAME 8 | |
c5aa993b | 790 | #define TAG_MOREDISPLAY 16 |
cce74817 | 791 | |
c906108c SS |
792 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2) |
793 | ||
cce74817 JM |
794 | char *unpack_varlen_hex PARAMS ((char *buff, int *result)); |
795 | ||
796 | static char *unpack_nibble PARAMS ((char *buf, int *val)); | |
797 | ||
798 | static char *pack_nibble PARAMS ((char *buf, int nibble)); | |
799 | ||
c5aa993b | 800 | static char *pack_hex_byte PARAMS ((char *pkt, int /*unsigned char */ byte)); |
cce74817 JM |
801 | |
802 | static char *unpack_byte PARAMS ((char *buf, int *value)); | |
803 | ||
804 | static char *pack_int PARAMS ((char *buf, int value)); | |
805 | ||
806 | static char *unpack_int PARAMS ((char *buf, int *value)); | |
807 | ||
808 | static char *unpack_string PARAMS ((char *src, char *dest, int length)); | |
809 | ||
c5aa993b | 810 | static char *pack_threadid PARAMS ((char *pkt, threadref * id)); |
cce74817 | 811 | |
c5aa993b | 812 | static char *unpack_threadid PARAMS ((char *inbuf, threadref * id)); |
cce74817 | 813 | |
c5aa993b | 814 | void int_to_threadref PARAMS ((threadref * id, int value)); |
cce74817 | 815 | |
c5aa993b | 816 | static int threadref_to_int PARAMS ((threadref * ref)); |
cce74817 | 817 | |
c5aa993b | 818 | static void copy_threadref PARAMS ((threadref * dest, threadref * src)); |
cce74817 | 819 | |
c5aa993b | 820 | static int threadmatch PARAMS ((threadref * dest, threadref * src)); |
cce74817 JM |
821 | |
822 | static char *pack_threadinfo_request PARAMS ((char *pkt, int mode, | |
c5aa993b | 823 | threadref * id)); |
cce74817 JM |
824 | |
825 | static int remote_unpack_thread_info_response PARAMS ((char *pkt, | |
c5aa993b JM |
826 | threadref * expectedref, |
827 | struct gdb_ext_thread_info * info)); | |
cce74817 JM |
828 | |
829 | ||
c5aa993b JM |
830 | static int remote_get_threadinfo PARAMS ((threadref * threadid, |
831 | int fieldset, /*TAG mask */ | |
832 | struct gdb_ext_thread_info * info)); | |
cce74817 | 833 | |
c5aa993b | 834 | static int adapt_remote_get_threadinfo PARAMS ((gdb_threadref * ref, |
cce74817 | 835 | int selection, |
c5aa993b | 836 | struct gdb_ext_thread_info * info)); |
cce74817 JM |
837 | |
838 | static char *pack_threadlist_request PARAMS ((char *pkt, int startflag, | |
839 | int threadcount, | |
c5aa993b | 840 | threadref * nextthread)); |
cce74817 JM |
841 | |
842 | static int parse_threadlist_response PARAMS ((char *pkt, | |
843 | int result_limit, | |
c5aa993b JM |
844 | threadref * original_echo, |
845 | threadref * resultlist, | |
cce74817 JM |
846 | int *doneflag)); |
847 | ||
848 | static int remote_get_threadlist PARAMS ((int startflag, | |
c5aa993b | 849 | threadref * nextthread, |
cce74817 JM |
850 | int result_limit, |
851 | int *done, | |
852 | int *result_count, | |
c5aa993b | 853 | threadref * threadlist)); |
cce74817 | 854 | |
c5aa993b | 855 | typedef int (*rmt_thread_action) (threadref * ref, void *context); |
cce74817 JM |
856 | |
857 | static int remote_threadlist_iterator PARAMS ((rmt_thread_action stepfunction, | |
c5aa993b | 858 | void *context, int looplimit)); |
cce74817 | 859 | |
c5aa993b | 860 | static int remote_newthread_step PARAMS ((threadref * ref, void *context)); |
cce74817 | 861 | |
c906108c SS |
862 | /* encode 64 bits in 16 chars of hex */ |
863 | ||
864 | static const char hexchars[] = "0123456789abcdef"; | |
865 | ||
866 | static int | |
867 | ishex (ch, val) | |
868 | int ch; | |
869 | int *val; | |
870 | { | |
871 | if ((ch >= 'a') && (ch <= 'f')) | |
872 | { | |
873 | *val = ch - 'a' + 10; | |
874 | return 1; | |
875 | } | |
876 | if ((ch >= 'A') && (ch <= 'F')) | |
877 | { | |
878 | *val = ch - 'A' + 10; | |
879 | return 1; | |
880 | } | |
881 | if ((ch >= '0') && (ch <= '9')) | |
882 | { | |
883 | *val = ch - '0'; | |
884 | return 1; | |
885 | } | |
886 | return 0; | |
887 | } | |
888 | ||
889 | static int | |
890 | stubhex (ch) | |
891 | int ch; | |
892 | { | |
893 | if (ch >= 'a' && ch <= 'f') | |
894 | return ch - 'a' + 10; | |
895 | if (ch >= '0' && ch <= '9') | |
896 | return ch - '0'; | |
897 | if (ch >= 'A' && ch <= 'F') | |
898 | return ch - 'A' + 10; | |
899 | return -1; | |
900 | } | |
901 | ||
902 | static int | |
903 | stub_unpack_int (buff, fieldlength) | |
904 | char *buff; | |
905 | int fieldlength; | |
906 | { | |
907 | int nibble; | |
908 | int retval = 0; | |
909 | ||
910 | while (fieldlength) | |
911 | { | |
912 | nibble = stubhex (*buff++); | |
913 | retval |= nibble; | |
914 | fieldlength--; | |
915 | if (fieldlength) | |
916 | retval = retval << 4; | |
917 | } | |
918 | return retval; | |
919 | } | |
920 | ||
921 | char * | |
922 | unpack_varlen_hex (buff, result) | |
923 | char *buff; /* packet to parse */ | |
924 | int *result; | |
925 | { | |
926 | int nibble; | |
927 | int retval = 0; | |
928 | ||
929 | while (ishex (*buff, &nibble)) | |
930 | { | |
931 | buff++; | |
932 | retval = retval << 4; | |
933 | retval |= nibble & 0x0f; | |
934 | } | |
935 | *result = retval; | |
936 | return buff; | |
937 | } | |
938 | ||
939 | static char * | |
940 | unpack_nibble (buf, val) | |
941 | char *buf; | |
942 | int *val; | |
943 | { | |
944 | ishex (*buf++, val); | |
945 | return buf; | |
946 | } | |
947 | ||
948 | static char * | |
949 | pack_nibble (buf, nibble) | |
950 | char *buf; | |
951 | int nibble; | |
952 | { | |
953 | *buf++ = hexchars[(nibble & 0x0f)]; | |
954 | return buf; | |
955 | } | |
956 | ||
957 | static char * | |
958 | pack_hex_byte (pkt, byte) | |
959 | char *pkt; | |
960 | int byte; | |
961 | { | |
962 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
963 | *pkt++ = hexchars[(byte & 0xf)]; | |
964 | return pkt; | |
965 | } | |
966 | ||
967 | static char * | |
968 | unpack_byte (buf, value) | |
969 | char *buf; | |
970 | int *value; | |
971 | { | |
972 | *value = stub_unpack_int (buf, 2); | |
973 | return buf + 2; | |
974 | } | |
975 | ||
976 | static char * | |
977 | pack_int (buf, value) | |
978 | char *buf; | |
979 | int value; | |
980 | { | |
981 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
982 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
983 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
984 | buf = pack_hex_byte (buf, (value & 0xff)); | |
985 | return buf; | |
986 | } | |
987 | ||
988 | static char * | |
989 | unpack_int (buf, value) | |
990 | char *buf; | |
991 | int *value; | |
992 | { | |
993 | *value = stub_unpack_int (buf, 8); | |
994 | return buf + 8; | |
995 | } | |
996 | ||
c5aa993b | 997 | #if 0 /* currently unused, uncomment when needed */ |
c906108c SS |
998 | static char *pack_string PARAMS ((char *pkt, char *string)); |
999 | ||
1000 | static char * | |
1001 | pack_string (pkt, string) | |
1002 | char *pkt; | |
1003 | char *string; | |
1004 | { | |
1005 | char ch; | |
1006 | int len; | |
1007 | ||
1008 | len = strlen (string); | |
1009 | if (len > 200) | |
1010 | len = 200; /* Bigger than most GDB packets, junk??? */ | |
1011 | pkt = pack_hex_byte (pkt, len); | |
1012 | while (len-- > 0) | |
1013 | { | |
1014 | ch = *string++; | |
1015 | if ((ch == '\0') || (ch == '#')) | |
1016 | ch = '*'; /* Protect encapsulation */ | |
1017 | *pkt++ = ch; | |
1018 | } | |
1019 | return pkt; | |
1020 | } | |
1021 | #endif /* 0 (unused) */ | |
1022 | ||
1023 | static char * | |
1024 | unpack_string (src, dest, length) | |
1025 | char *src; | |
1026 | char *dest; | |
1027 | int length; | |
1028 | { | |
1029 | while (length--) | |
1030 | *dest++ = *src++; | |
1031 | *dest = '\0'; | |
1032 | return src; | |
1033 | } | |
1034 | ||
1035 | static char * | |
1036 | pack_threadid (pkt, id) | |
1037 | char *pkt; | |
1038 | threadref *id; | |
1039 | { | |
1040 | char *limit; | |
1041 | unsigned char *altid; | |
1042 | ||
1043 | altid = (unsigned char *) id; | |
1044 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1045 | while (pkt < limit) | |
1046 | pkt = pack_hex_byte (pkt, *altid++); | |
1047 | return pkt; | |
1048 | } | |
1049 | ||
1050 | ||
1051 | static char * | |
1052 | unpack_threadid (inbuf, id) | |
1053 | char *inbuf; | |
1054 | threadref *id; | |
1055 | { | |
1056 | char *altref; | |
1057 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1058 | int x, y; | |
1059 | ||
1060 | altref = (char *) id; | |
1061 | ||
1062 | while (inbuf < limit) | |
1063 | { | |
1064 | x = stubhex (*inbuf++); | |
1065 | y = stubhex (*inbuf++); | |
1066 | *altref++ = (x << 4) | y; | |
1067 | } | |
1068 | return inbuf; | |
1069 | } | |
1070 | ||
1071 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1072 | ints. This is due to a mismatch of specifications. We would like | |
1073 | to use 64bit thread references internally. This is an adapter | |
1074 | function. */ | |
1075 | ||
1076 | void | |
1077 | int_to_threadref (id, value) | |
1078 | threadref *id; | |
1079 | int value; | |
1080 | { | |
1081 | unsigned char *scan; | |
1082 | ||
1083 | scan = (unsigned char *) id; | |
1084 | { | |
1085 | int i = 4; | |
1086 | while (i--) | |
1087 | *scan++ = 0; | |
1088 | } | |
1089 | *scan++ = (value >> 24) & 0xff; | |
1090 | *scan++ = (value >> 16) & 0xff; | |
1091 | *scan++ = (value >> 8) & 0xff; | |
1092 | *scan++ = (value & 0xff); | |
1093 | } | |
1094 | ||
1095 | static int | |
1096 | threadref_to_int (ref) | |
1097 | threadref *ref; | |
1098 | { | |
1099 | int i, value = 0; | |
1100 | unsigned char *scan; | |
1101 | ||
1102 | scan = (char *) ref; | |
1103 | scan += 4; | |
1104 | i = 4; | |
1105 | while (i-- > 0) | |
1106 | value = (value << 8) | ((*scan++) & 0xff); | |
1107 | return value; | |
1108 | } | |
1109 | ||
1110 | static void | |
1111 | copy_threadref (dest, src) | |
1112 | threadref *dest; | |
1113 | threadref *src; | |
1114 | { | |
1115 | int i; | |
1116 | unsigned char *csrc, *cdest; | |
1117 | ||
1118 | csrc = (unsigned char *) src; | |
1119 | cdest = (unsigned char *) dest; | |
1120 | i = 8; | |
1121 | while (i--) | |
1122 | *cdest++ = *csrc++; | |
1123 | } | |
1124 | ||
1125 | static int | |
1126 | threadmatch (dest, src) | |
1127 | threadref *dest; | |
1128 | threadref *src; | |
1129 | { | |
1130 | /* things are broken right now, so just assume we got a match */ | |
1131 | #if 0 | |
1132 | unsigned char *srcp, *destp; | |
1133 | int i, result; | |
1134 | srcp = (char *) src; | |
1135 | destp = (char *) dest; | |
1136 | ||
1137 | result = 1; | |
1138 | while (i-- > 0) | |
1139 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1140 | return result; | |
1141 | #endif | |
1142 | return 1; | |
1143 | } | |
1144 | ||
1145 | /* | |
c5aa993b JM |
1146 | threadid:1, # always request threadid |
1147 | context_exists:2, | |
1148 | display:4, | |
1149 | unique_name:8, | |
1150 | more_display:16 | |
1151 | */ | |
c906108c SS |
1152 | |
1153 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1154 | ||
1155 | static char * | |
1156 | pack_threadinfo_request (pkt, mode, id) | |
1157 | char *pkt; | |
1158 | int mode; | |
1159 | threadref *id; | |
1160 | { | |
1161 | *pkt++ = 'q'; /* Info Query */ | |
1162 | *pkt++ = 'P'; /* process or thread info */ | |
1163 | pkt = pack_int (pkt, mode); /* mode */ | |
1164 | pkt = pack_threadid (pkt, id); /* threadid */ | |
1165 | *pkt = '\0'; /* terminate */ | |
1166 | return pkt; | |
1167 | } | |
1168 | ||
1169 | /* These values tag the fields in a thread info response packet */ | |
1170 | /* Tagging the fields allows us to request specific fields and to | |
1171 | add more fields as time goes by */ | |
1172 | ||
c5aa993b JM |
1173 | #define TAG_THREADID 1 /* Echo the thread identifier */ |
1174 | #define TAG_EXISTS 2 /* Is this process defined enough to | |
1175 | fetch registers and its stack */ | |
1176 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ | |
1177 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */ | |
1178 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about | |
1179 | the process */ | |
c906108c SS |
1180 | |
1181 | static int | |
1182 | remote_unpack_thread_info_response (pkt, expectedref, info) | |
1183 | char *pkt; | |
1184 | threadref *expectedref; | |
1185 | struct gdb_ext_thread_info *info; | |
1186 | { | |
1187 | int mask, length; | |
1188 | unsigned int tag; | |
1189 | threadref ref; | |
c5aa993b | 1190 | char *limit = pkt + PBUFSIZ; /* plausable parsing limit */ |
c906108c SS |
1191 | int retval = 1; |
1192 | ||
1193 | /* info->threadid = 0; FIXME: implement zero_threadref */ | |
1194 | info->active = 0; | |
1195 | info->display[0] = '\0'; | |
1196 | info->shortname[0] = '\0'; | |
1197 | info->more_display[0] = '\0'; | |
1198 | ||
1199 | /* Assume the characters indicating the packet type have been stripped */ | |
1200 | pkt = unpack_int (pkt, &mask); /* arg mask */ | |
1201 | pkt = unpack_threadid (pkt, &ref); | |
1202 | ||
1203 | if (mask == 0) | |
1204 | warning ("Incomplete response to threadinfo request\n"); | |
1205 | if (!threadmatch (&ref, expectedref)) | |
1206 | { /* This is an answer to a different request */ | |
1207 | warning ("ERROR RMT Thread info mismatch\n"); | |
1208 | return 0; | |
1209 | } | |
1210 | copy_threadref (&info->threadid, &ref); | |
1211 | ||
1212 | /* Loop on tagged fields , try to bail if somthing goes wrong */ | |
1213 | ||
c5aa993b | 1214 | while ((pkt < limit) && mask && *pkt) /* packets are terminated with nulls */ |
c906108c SS |
1215 | { |
1216 | pkt = unpack_int (pkt, &tag); /* tag */ | |
1217 | pkt = unpack_byte (pkt, &length); /* length */ | |
1218 | if (!(tag & mask)) /* tags out of synch with mask */ | |
1219 | { | |
1220 | warning ("ERROR RMT: threadinfo tag mismatch\n"); | |
1221 | retval = 0; | |
1222 | break; | |
1223 | } | |
1224 | if (tag == TAG_THREADID) | |
1225 | { | |
1226 | if (length != 16) | |
1227 | { | |
1228 | warning ("ERROR RMT: length of threadid is not 16\n"); | |
1229 | retval = 0; | |
1230 | break; | |
1231 | } | |
1232 | pkt = unpack_threadid (pkt, &ref); | |
1233 | mask = mask & ~TAG_THREADID; | |
1234 | continue; | |
1235 | } | |
1236 | if (tag == TAG_EXISTS) | |
1237 | { | |
1238 | info->active = stub_unpack_int (pkt, length); | |
1239 | pkt += length; | |
1240 | mask = mask & ~(TAG_EXISTS); | |
1241 | if (length > 8) | |
1242 | { | |
1243 | warning ("ERROR RMT: 'exists' length too long\n"); | |
1244 | retval = 0; | |
1245 | break; | |
1246 | } | |
1247 | continue; | |
1248 | } | |
1249 | if (tag == TAG_THREADNAME) | |
1250 | { | |
1251 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1252 | mask = mask & ~TAG_THREADNAME; | |
1253 | continue; | |
1254 | } | |
1255 | if (tag == TAG_DISPLAY) | |
1256 | { | |
1257 | pkt = unpack_string (pkt, &info->display[0], length); | |
1258 | mask = mask & ~TAG_DISPLAY; | |
1259 | continue; | |
1260 | } | |
1261 | if (tag == TAG_MOREDISPLAY) | |
1262 | { | |
1263 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1264 | mask = mask & ~TAG_MOREDISPLAY; | |
1265 | continue; | |
1266 | } | |
1267 | warning ("ERROR RMT: unknown thread info tag\n"); | |
1268 | break; /* Not a tag we know about */ | |
1269 | } | |
1270 | return retval; | |
1271 | } | |
1272 | ||
1273 | static int | |
1274 | remote_get_threadinfo (threadid, fieldset, info) | |
1275 | threadref *threadid; | |
1276 | int fieldset; /* TAG mask */ | |
1277 | struct gdb_ext_thread_info *info; | |
1278 | { | |
1279 | int result; | |
085dd6e6 | 1280 | char *threadinfo_pkt = alloca (PBUFSIZ); |
c906108c SS |
1281 | |
1282 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1283 | putpkt (threadinfo_pkt); | |
1284 | getpkt (threadinfo_pkt, 0); | |
1285 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, threadid, | |
1286 | info); | |
1287 | return result; | |
1288 | } | |
1289 | ||
1290 | /* Unfortunately, 61 bit thread-ids are bigger than the internal | |
1291 | representation of a threadid. */ | |
1292 | ||
1293 | static int | |
1294 | adapt_remote_get_threadinfo (ref, selection, info) | |
1295 | gdb_threadref *ref; | |
1296 | int selection; | |
1297 | struct gdb_ext_thread_info *info; | |
1298 | { | |
1299 | threadref lclref; | |
1300 | ||
1301 | int_to_threadref (&lclref, *ref); | |
1302 | return remote_get_threadinfo (&lclref, selection, info); | |
1303 | } | |
1304 | ||
1305 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ | |
1306 | ||
1307 | static char * | |
1308 | pack_threadlist_request (pkt, startflag, threadcount, nextthread) | |
1309 | char *pkt; | |
1310 | int startflag; | |
1311 | int threadcount; | |
1312 | threadref *nextthread; | |
1313 | { | |
1314 | *pkt++ = 'q'; /* info query packet */ | |
1315 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
1316 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ | |
1317 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ | |
1318 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1319 | *pkt = '\0'; | |
1320 | return pkt; | |
1321 | } | |
1322 | ||
1323 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1324 | ||
1325 | static int | |
1326 | parse_threadlist_response (pkt, result_limit, original_echo, resultlist, | |
1327 | doneflag) | |
1328 | char *pkt; | |
1329 | int result_limit; | |
1330 | threadref *original_echo; | |
1331 | threadref *resultlist; | |
1332 | int *doneflag; | |
1333 | { | |
1334 | char *limit; | |
1335 | int count, resultcount, done; | |
1336 | ||
1337 | resultcount = 0; | |
1338 | /* Assume the 'q' and 'M chars have been stripped. */ | |
c5aa993b | 1339 | limit = pkt + (PBUFSIZ - BUF_THREAD_ID_SIZE); /* done parse past here */ |
c906108c SS |
1340 | pkt = unpack_byte (pkt, &count); /* count field */ |
1341 | pkt = unpack_nibble (pkt, &done); | |
1342 | /* The first threadid is the argument threadid. */ | |
1343 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1344 | while ((count-- > 0) && (pkt < limit)) | |
1345 | { | |
1346 | pkt = unpack_threadid (pkt, resultlist++); | |
1347 | if (resultcount++ >= result_limit) | |
1348 | break; | |
1349 | } | |
1350 | if (doneflag) | |
1351 | *doneflag = done; | |
1352 | return resultcount; | |
1353 | } | |
1354 | ||
1355 | static int | |
1356 | remote_get_threadlist (startflag, nextthread, result_limit, | |
1357 | done, result_count, threadlist) | |
1358 | int startflag; | |
1359 | threadref *nextthread; | |
1360 | int result_limit; | |
1361 | int *done; | |
1362 | int *result_count; | |
1363 | threadref *threadlist; | |
1364 | ||
1365 | { | |
1366 | static threadref echo_nextthread; | |
085dd6e6 JM |
1367 | char *threadlist_packet = alloca (PBUFSIZ); |
1368 | char *t_response = alloca (PBUFSIZ); | |
c906108c SS |
1369 | int result = 1; |
1370 | ||
1371 | /* Trancate result limit to be smaller than the packet size */ | |
1372 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= PBUFSIZ) | |
1373 | result_limit = (PBUFSIZ / BUF_THREAD_ID_SIZE) - 2; | |
1374 | ||
1375 | pack_threadlist_request (threadlist_packet, | |
1376 | startflag, result_limit, nextthread); | |
1377 | putpkt (threadlist_packet); | |
1378 | getpkt (t_response, 0); | |
1379 | ||
1380 | *result_count = | |
1381 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1382 | threadlist, done); | |
1383 | ||
1384 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1385 | { | |
1386 | /* FIXME: This is a good reason to drop the packet */ | |
1387 | /* Possably, there is a duplicate response */ | |
1388 | /* Possabilities : | |
1389 | retransmit immediatly - race conditions | |
1390 | retransmit after timeout - yes | |
1391 | exit | |
1392 | wait for packet, then exit | |
1393 | */ | |
1394 | warning ("HMM: threadlist did not echo arg thread, dropping it\n"); | |
1395 | return 0; /* I choose simply exiting */ | |
1396 | } | |
1397 | if (*result_count <= 0) | |
1398 | { | |
1399 | if (*done != 1) | |
1400 | { | |
1401 | warning ("RMT ERROR : failed to get remote thread list\n"); | |
1402 | result = 0; | |
1403 | } | |
1404 | return result; /* break; */ | |
1405 | } | |
1406 | if (*result_count > result_limit) | |
1407 | { | |
1408 | *result_count = 0; | |
1409 | warning ("RMT ERROR: threadlist response longer than requested\n"); | |
1410 | return 0; | |
1411 | } | |
1412 | return result; | |
1413 | } | |
1414 | ||
1415 | /* This is the interface between remote and threads, remotes upper interface */ | |
1416 | ||
1417 | /* remote_find_new_threads retrieves the thread list and for each | |
1418 | thread in the list, looks up the thread in GDB's internal list, | |
1419 | ading the thread if it does not already exist. This involves | |
1420 | getting partial thread lists from the remote target so, polling the | |
1421 | quit_flag is required. */ | |
1422 | ||
1423 | ||
1424 | /* About this many threadisds fit in a packet. */ | |
1425 | ||
1426 | #define MAXTHREADLISTRESULTS 32 | |
1427 | ||
1428 | static int | |
1429 | remote_threadlist_iterator (stepfunction, context, looplimit) | |
1430 | rmt_thread_action stepfunction; | |
1431 | void *context; | |
1432 | int looplimit; | |
1433 | { | |
1434 | int done, i, result_count; | |
1435 | int startflag = 1; | |
1436 | int result = 1; | |
1437 | int loopcount = 0; | |
1438 | static threadref nextthread; | |
1439 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1440 | ||
1441 | done = 0; | |
1442 | while (!done) | |
1443 | { | |
1444 | if (loopcount++ > looplimit) | |
1445 | { | |
1446 | result = 0; | |
1447 | warning ("Remote fetch threadlist -infinite loop-\n"); | |
1448 | break; | |
1449 | } | |
1450 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1451 | &done, &result_count, resultthreadlist)) | |
1452 | { | |
1453 | result = 0; | |
1454 | break; | |
1455 | } | |
1456 | /* clear for later iterations */ | |
1457 | startflag = 0; | |
1458 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1459 | if (result_count >= 1) | |
1460 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1461 | i = 0; | |
1462 | while (result_count--) | |
1463 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1464 | break; | |
1465 | } | |
1466 | return result; | |
1467 | } | |
1468 | ||
1469 | static int | |
1470 | remote_newthread_step (ref, context) | |
1471 | threadref *ref; | |
1472 | void *context; | |
1473 | { | |
1474 | int pid; | |
1475 | ||
1476 | pid = threadref_to_int (ref); | |
1477 | if (!in_thread_list (pid)) | |
1478 | add_thread (pid); | |
1479 | return 1; /* continue iterator */ | |
1480 | } | |
1481 | ||
1482 | #define CRAZY_MAX_THREADS 1000 | |
1483 | ||
1484 | static int | |
1485 | remote_current_thread (oldpid) | |
1486 | int oldpid; | |
1487 | { | |
085dd6e6 | 1488 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1489 | |
1490 | putpkt ("qC"); | |
1491 | getpkt (buf, 0); | |
1492 | if (buf[0] == 'Q' && buf[1] == 'C') | |
1493 | return strtol (&buf[2], NULL, 16); | |
1494 | else | |
1495 | return oldpid; | |
1496 | } | |
1497 | ||
cce74817 JM |
1498 | /* Find new threads for info threads command. */ |
1499 | ||
1500 | static void | |
c906108c SS |
1501 | remote_find_new_threads () |
1502 | { | |
c5aa993b JM |
1503 | remote_threadlist_iterator (remote_newthread_step, 0, |
1504 | CRAZY_MAX_THREADS); | |
c906108c SS |
1505 | if (inferior_pid == MAGIC_NULL_PID) /* ack ack ack */ |
1506 | inferior_pid = remote_current_thread (inferior_pid); | |
c906108c SS |
1507 | } |
1508 | ||
0f71a2f6 JM |
1509 | static void |
1510 | remote_threads_info (void) | |
1511 | { | |
085dd6e6 JM |
1512 | char *buf = alloca (PBUFSIZ); |
1513 | char *bufp; | |
0f71a2f6 JM |
1514 | int tid; |
1515 | ||
1516 | if (remote_desc == 0) /* paranoia */ | |
1517 | error ("Command can only be used when connected to the remote target."); | |
1518 | ||
1519 | putpkt ("qfThreadInfo"); | |
1520 | getpkt (bufp = buf, 0); | |
1521 | if (bufp[0] == '\0') /* q packet not recognized! */ | |
1522 | { /* try old jmetzler method */ | |
1523 | remote_find_new_threads (); | |
1524 | return; | |
1525 | } | |
1526 | else /* try new 'q' method */ | |
c5aa993b | 1527 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
0f71a2f6 | 1528 | { |
c5aa993b JM |
1529 | do |
1530 | { | |
1531 | tid = strtol (bufp, &bufp, 16); | |
1532 | if (tid != 0 && !in_thread_list (tid)) | |
1533 | add_thread (tid); | |
1534 | } | |
1535 | while (*bufp++ == ','); /* comma-separated list */ | |
0f71a2f6 JM |
1536 | putpkt ("qsThreadInfo"); |
1537 | getpkt (bufp = buf, 0); | |
1538 | } | |
1539 | } | |
c906108c | 1540 | \f |
c5aa993b | 1541 | |
c906108c SS |
1542 | /* Restart the remote side; this is an extended protocol operation. */ |
1543 | ||
1544 | static void | |
1545 | extended_remote_restart () | |
1546 | { | |
085dd6e6 | 1547 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1548 | |
1549 | /* Send the restart command; for reasons I don't understand the | |
1550 | remote side really expects a number after the "R". */ | |
1551 | buf[0] = 'R'; | |
1552 | sprintf (&buf[1], "%x", 0); | |
1553 | putpkt (buf); | |
1554 | ||
1555 | /* Now query for status so this looks just like we restarted | |
1556 | gdbserver from scratch. */ | |
1557 | putpkt ("?"); | |
1558 | getpkt (buf, 0); | |
1559 | } | |
1560 | \f | |
1561 | /* Clean up connection to a remote debugger. */ | |
1562 | ||
1563 | /* ARGSUSED */ | |
1564 | static void | |
1565 | remote_close (quitting) | |
1566 | int quitting; | |
1567 | { | |
1568 | if (remote_desc) | |
1569 | SERIAL_CLOSE (remote_desc); | |
1570 | remote_desc = NULL; | |
1571 | } | |
1572 | ||
1573 | /* Query the remote side for the text, data and bss offsets. */ | |
1574 | ||
1575 | static void | |
1576 | get_offsets () | |
1577 | { | |
085dd6e6 JM |
1578 | char *buf = alloca (PBUFSIZ); |
1579 | char *ptr; | |
c906108c SS |
1580 | int lose; |
1581 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1582 | struct section_offsets *offs; | |
1583 | ||
1584 | putpkt ("qOffsets"); | |
1585 | ||
1586 | getpkt (buf, 0); | |
1587 | ||
1588 | if (buf[0] == '\000') | |
1589 | return; /* Return silently. Stub doesn't support | |
1590 | this command. */ | |
1591 | if (buf[0] == 'E') | |
1592 | { | |
1593 | warning ("Remote failure reply: %s", buf); | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | /* Pick up each field in turn. This used to be done with scanf, but | |
1598 | scanf will make trouble if CORE_ADDR size doesn't match | |
1599 | conversion directives correctly. The following code will work | |
1600 | with any size of CORE_ADDR. */ | |
1601 | text_addr = data_addr = bss_addr = 0; | |
1602 | ptr = buf; | |
1603 | lose = 0; | |
1604 | ||
1605 | if (strncmp (ptr, "Text=", 5) == 0) | |
1606 | { | |
1607 | ptr += 5; | |
1608 | /* Don't use strtol, could lose on big values. */ | |
1609 | while (*ptr && *ptr != ';') | |
1610 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1611 | } | |
1612 | else | |
1613 | lose = 1; | |
1614 | ||
1615 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1616 | { | |
1617 | ptr += 6; | |
1618 | while (*ptr && *ptr != ';') | |
1619 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1620 | } | |
1621 | else | |
1622 | lose = 1; | |
1623 | ||
1624 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1625 | { | |
1626 | ptr += 5; | |
1627 | while (*ptr && *ptr != ';') | |
1628 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1629 | } | |
1630 | else | |
1631 | lose = 1; | |
1632 | ||
1633 | if (lose) | |
1634 | error ("Malformed response to offset query, %s", buf); | |
1635 | ||
1636 | if (symfile_objfile == NULL) | |
1637 | return; | |
1638 | ||
085dd6e6 | 1639 | offs = alloca (sizeof (struct section_offsets) |
c5aa993b JM |
1640 | + symfile_objfile->num_sections |
1641 | * sizeof (offs->offsets)); | |
c906108c SS |
1642 | memcpy (offs, symfile_objfile->section_offsets, |
1643 | sizeof (struct section_offsets) | |
1644 | + symfile_objfile->num_sections | |
1645 | * sizeof (offs->offsets)); | |
1646 | ||
1647 | ANOFFSET (offs, SECT_OFF_TEXT) = text_addr; | |
1648 | ||
1649 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1650 | because that's what nlmconv does now. The real solution requires changes | |
1651 | to the stub and remote.c that I don't have time to do right now. */ | |
1652 | ||
1653 | ANOFFSET (offs, SECT_OFF_DATA) = data_addr; | |
1654 | ANOFFSET (offs, SECT_OFF_BSS) = data_addr; | |
1655 | ||
1656 | objfile_relocate (symfile_objfile, offs); | |
1657 | } | |
1658 | ||
0f71a2f6 JM |
1659 | /* |
1660 | * Cisco version of section offsets: | |
1661 | * | |
1662 | * Instead of having GDB query the target for the section offsets, | |
1663 | * Cisco lets the target volunteer the information! It's also in | |
1664 | * a different format, so here are the functions that will decode | |
1665 | * a section offset packet from a Cisco target. | |
1666 | */ | |
1667 | ||
1668 | /* | |
1669 | * Function: remote_cisco_section_offsets | |
1670 | * | |
1671 | * Returns: zero for success, non-zero for failure | |
1672 | */ | |
1673 | ||
c5aa993b JM |
1674 | static int |
1675 | remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
0f71a2f6 JM |
1676 | text_offs, data_offs, bss_offs) |
1677 | bfd_vma text_addr; | |
1678 | bfd_vma data_addr; | |
1679 | bfd_vma bss_addr; | |
c5aa993b JM |
1680 | bfd_signed_vma *text_offs; |
1681 | bfd_signed_vma *data_offs; | |
1682 | bfd_signed_vma *bss_offs; | |
0f71a2f6 JM |
1683 | { |
1684 | bfd_vma text_base, data_base, bss_base; | |
1685 | struct minimal_symbol *start; | |
1686 | asection *sect; | |
c5aa993b | 1687 | bfd *abfd; |
0f71a2f6 JM |
1688 | int len; |
1689 | char *p; | |
1690 | ||
1691 | if (symfile_objfile == NULL) | |
c5aa993b | 1692 | return -1; /* no can do nothin' */ |
0f71a2f6 JM |
1693 | |
1694 | start = lookup_minimal_symbol ("_start", NULL, NULL); | |
1695 | if (start == NULL) | |
c5aa993b | 1696 | return -1; /* Can't find "_start" symbol */ |
0f71a2f6 JM |
1697 | |
1698 | data_base = bss_base = 0; | |
1699 | text_base = SYMBOL_VALUE_ADDRESS (start); | |
1700 | ||
1701 | abfd = symfile_objfile->obfd; | |
c5aa993b | 1702 | for (sect = abfd->sections; |
0f71a2f6 JM |
1703 | sect != 0; |
1704 | sect = sect->next) | |
1705 | { | |
c5aa993b | 1706 | p = (unsigned char *) bfd_get_section_name (abfd, sect); |
0f71a2f6 JM |
1707 | len = strlen (p); |
1708 | if (strcmp (p + len - 4, "data") == 0) /* ends in "data" */ | |
1709 | if (data_base == 0 || | |
1710 | data_base > bfd_get_section_vma (abfd, sect)) | |
1711 | data_base = bfd_get_section_vma (abfd, sect); | |
1712 | if (strcmp (p + len - 3, "bss") == 0) /* ends in "bss" */ | |
c5aa993b | 1713 | if (bss_base == 0 || |
0f71a2f6 JM |
1714 | bss_base > bfd_get_section_vma (abfd, sect)) |
1715 | bss_base = bfd_get_section_vma (abfd, sect); | |
1716 | } | |
1717 | *text_offs = text_addr - text_base; | |
1718 | *data_offs = data_addr - data_base; | |
c5aa993b | 1719 | *bss_offs = bss_addr - bss_base; |
0f71a2f6 JM |
1720 | if (remote_debug) |
1721 | { | |
1722 | char tmp[128]; | |
1723 | ||
1724 | sprintf (tmp, "VMA: text = 0x"); | |
1725 | sprintf_vma (tmp + strlen (tmp), text_addr); | |
c5aa993b | 1726 | sprintf (tmp + strlen (tmp), " data = 0x"); |
0f71a2f6 | 1727 | sprintf_vma (tmp + strlen (tmp), data_addr); |
c5aa993b | 1728 | sprintf (tmp + strlen (tmp), " bss = 0x"); |
0f71a2f6 JM |
1729 | sprintf_vma (tmp + strlen (tmp), bss_addr); |
1730 | fprintf_filtered (gdb_stdlog, tmp); | |
1731 | fprintf_filtered (gdb_stdlog, | |
1732 | "Reloc offset: text = 0x%x data = 0x%x bss = 0x%x\n", | |
c5aa993b | 1733 | (long) *text_offs, (long) *data_offs, (long) *bss_offs); |
0f71a2f6 JM |
1734 | } |
1735 | ||
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | /* | |
1740 | * Function: remote_cisco_objfile_relocate | |
1741 | * | |
1742 | * Relocate the symbol file for a remote target. | |
1743 | */ | |
1744 | ||
1745 | static void | |
1746 | remote_cisco_objfile_relocate (text_off, data_off, bss_off) | |
1747 | bfd_signed_vma text_off; | |
1748 | bfd_signed_vma data_off; | |
1749 | bfd_signed_vma bss_off; | |
1750 | { | |
1751 | struct section_offsets *offs; | |
1752 | ||
c5aa993b | 1753 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
1754 | { |
1755 | /* FIXME: This code assumes gdb-stabs.h is being used; it's | |
c5aa993b JM |
1756 | broken for xcoff, dwarf, sdb-coff, etc. But there is no |
1757 | simple canonical representation for this stuff. */ | |
0f71a2f6 JM |
1758 | |
1759 | offs = ((struct section_offsets *) | |
1760 | alloca (sizeof (struct section_offsets) | |
1761 | + (symfile_objfile->num_sections | |
1762 | * sizeof (offs->offsets)))); | |
1763 | ||
1764 | memcpy (offs, symfile_objfile->section_offsets, | |
1765 | (sizeof (struct section_offsets) | |
1766 | + (symfile_objfile->num_sections | |
1767 | * sizeof (offs->offsets)))); | |
1768 | ||
1769 | ANOFFSET (offs, SECT_OFF_TEXT) = text_off; | |
1770 | ANOFFSET (offs, SECT_OFF_DATA) = data_off; | |
c5aa993b | 1771 | ANOFFSET (offs, SECT_OFF_BSS) = bss_off; |
0f71a2f6 JM |
1772 | |
1773 | /* First call the standard objfile_relocate. */ | |
1774 | objfile_relocate (symfile_objfile, offs); | |
1775 | ||
1776 | /* Now we need to fix up the section entries already attached to | |
c5aa993b JM |
1777 | the exec target. These entries will control memory transfers |
1778 | from the exec file. */ | |
0f71a2f6 JM |
1779 | |
1780 | exec_set_section_offsets (text_off, data_off, bss_off); | |
1781 | } | |
1782 | } | |
1783 | ||
c906108c SS |
1784 | /* Stub for catch_errors. */ |
1785 | ||
0f71a2f6 JM |
1786 | static int |
1787 | remote_start_remote_dummy (dummy) | |
1788 | char *dummy; | |
1789 | { | |
1790 | start_remote (); /* Initialize gdb process mechanisms */ | |
1791 | return 1; | |
1792 | } | |
1793 | ||
c906108c SS |
1794 | static int |
1795 | remote_start_remote (dummy) | |
1796 | PTR dummy; | |
1797 | { | |
1798 | immediate_quit = 1; /* Allow user to interrupt it */ | |
1799 | ||
1800 | /* Ack any packet which the remote side has already sent. */ | |
1801 | SERIAL_WRITE (remote_desc, "+", 1); | |
1802 | ||
1803 | /* Let the stub know that we want it to return the thread. */ | |
1804 | set_thread (-1, 0); | |
1805 | ||
1806 | inferior_pid = remote_current_thread (inferior_pid); | |
1807 | ||
1808 | get_offsets (); /* Get text, data & bss offsets */ | |
1809 | ||
1810 | putpkt ("?"); /* initiate a query from remote machine */ | |
1811 | immediate_quit = 0; | |
1812 | ||
0f71a2f6 | 1813 | return remote_start_remote_dummy (dummy); |
c906108c SS |
1814 | } |
1815 | ||
1816 | /* Open a connection to a remote debugger. | |
1817 | NAME is the filename used for communication. */ | |
1818 | ||
1819 | static void | |
1820 | remote_open (name, from_tty) | |
1821 | char *name; | |
1822 | int from_tty; | |
1823 | { | |
1824 | remote_open_1 (name, from_tty, &remote_ops, 0); | |
1825 | } | |
1826 | ||
43ff13b4 JM |
1827 | /* Just like remote_open, but with asynchronous support. */ |
1828 | static void | |
1829 | remote_async_open (name, from_tty) | |
1830 | char *name; | |
1831 | int from_tty; | |
1832 | { | |
1833 | remote_async_open_1 (name, from_tty, &remote_async_ops, 0); | |
1834 | } | |
1835 | ||
c906108c SS |
1836 | /* Open a connection to a remote debugger using the extended |
1837 | remote gdb protocol. NAME is the filename used for communication. */ | |
1838 | ||
1839 | static void | |
1840 | extended_remote_open (name, from_tty) | |
1841 | char *name; | |
1842 | int from_tty; | |
1843 | { | |
c5aa993b | 1844 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */ ); |
c906108c SS |
1845 | } |
1846 | ||
43ff13b4 JM |
1847 | /* Just like extended_remote_open, but with asynchronous support. */ |
1848 | static void | |
1849 | extended_remote_async_open (name, from_tty) | |
1850 | char *name; | |
1851 | int from_tty; | |
1852 | { | |
c5aa993b | 1853 | remote_async_open_1 (name, from_tty, &extended_async_remote_ops, 1 /*extended_p */ ); |
43ff13b4 JM |
1854 | } |
1855 | ||
c906108c SS |
1856 | /* Generic code for opening a connection to a remote target. */ |
1857 | ||
1858 | static DCACHE *remote_dcache; | |
1859 | ||
1860 | static void | |
1861 | remote_open_1 (name, from_tty, target, extended_p) | |
1862 | char *name; | |
1863 | int from_tty; | |
1864 | struct target_ops *target; | |
1865 | int extended_p; | |
1866 | { | |
1867 | if (name == 0) | |
1868 | error ("To open a remote debug connection, you need to specify what\n\ | |
1869 | serial device is attached to the remote system (e.g. /dev/ttya)."); | |
1870 | ||
1871 | target_preopen (from_tty); | |
1872 | ||
1873 | unpush_target (target); | |
1874 | ||
1875 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
1876 | ||
1877 | remote_desc = SERIAL_OPEN (name); | |
1878 | if (!remote_desc) | |
1879 | perror_with_name (name); | |
1880 | ||
1881 | if (baud_rate != -1) | |
1882 | { | |
1883 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
1884 | { | |
1885 | SERIAL_CLOSE (remote_desc); | |
1886 | perror_with_name (name); | |
1887 | } | |
1888 | } | |
1889 | ||
c906108c SS |
1890 | SERIAL_RAW (remote_desc); |
1891 | ||
1892 | /* If there is something sitting in the buffer we might take it as a | |
1893 | response to a command, which would be bad. */ | |
1894 | SERIAL_FLUSH_INPUT (remote_desc); | |
1895 | ||
1896 | if (from_tty) | |
1897 | { | |
1898 | puts_filtered ("Remote debugging using "); | |
1899 | puts_filtered (name); | |
1900 | puts_filtered ("\n"); | |
1901 | } | |
c5aa993b | 1902 | push_target (target); /* Switch to using remote target now */ |
c906108c | 1903 | |
5a2468f5 | 1904 | init_packet_config (&remote_protocol_P); |
c906108c | 1905 | |
c5aa993b | 1906 | general_thread = -2; |
cce74817 | 1907 | continue_thread = -2; |
c906108c SS |
1908 | |
1909 | /* Force remote_write_bytes to check whether target supports | |
1910 | binary downloading. */ | |
1911 | remote_binary_checked = 0; | |
1912 | ||
1913 | /* Without this, some commands which require an active target (such | |
1914 | as kill) won't work. This variable serves (at least) double duty | |
1915 | as both the pid of the target process (if it has such), and as a | |
1916 | flag indicating that a target is active. These functions should | |
1917 | be split out into seperate variables, especially since GDB will | |
1918 | someday have a notion of debugging several processes. */ | |
1919 | ||
1920 | inferior_pid = MAGIC_NULL_PID; | |
1921 | /* Start the remote connection; if error (0), discard this target. | |
1922 | In particular, if the user quits, be sure to discard it | |
1923 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
1924 | if (!catch_errors (remote_start_remote, NULL, |
1925 | "Couldn't establish connection to remote target\n", | |
c906108c SS |
1926 | RETURN_MASK_ALL)) |
1927 | { | |
1928 | pop_target (); | |
1929 | return; | |
1930 | } | |
1931 | ||
1932 | if (extended_p) | |
1933 | { | |
1934 | /* tell the remote that we're using the extended protocol. */ | |
085dd6e6 | 1935 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
1936 | putpkt ("!"); |
1937 | getpkt (buf, 0); | |
1938 | } | |
1939 | } | |
1940 | ||
43ff13b4 JM |
1941 | /* Just like remote_open but with asynchronous support. */ |
1942 | static void | |
1943 | remote_async_open_1 (name, from_tty, target, extended_p) | |
1944 | char *name; | |
1945 | int from_tty; | |
1946 | struct target_ops *target; | |
1947 | int extended_p; | |
1948 | { | |
1949 | if (name == 0) | |
1950 | error ("To open a remote debug connection, you need to specify what\n\ | |
1951 | serial device is attached to the remote system (e.g. /dev/ttya)."); | |
1952 | ||
1953 | target_preopen (from_tty); | |
1954 | ||
1955 | unpush_target (target); | |
1956 | ||
1957 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
1958 | ||
1959 | remote_desc = SERIAL_OPEN (name); | |
1960 | if (!remote_desc) | |
1961 | perror_with_name (name); | |
1962 | ||
1963 | if (baud_rate != -1) | |
1964 | { | |
1965 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) | |
1966 | { | |
1967 | SERIAL_CLOSE (remote_desc); | |
1968 | perror_with_name (name); | |
1969 | } | |
1970 | } | |
1971 | ||
1972 | SERIAL_RAW (remote_desc); | |
1973 | ||
1974 | /* If there is something sitting in the buffer we might take it as a | |
1975 | response to a command, which would be bad. */ | |
1976 | SERIAL_FLUSH_INPUT (remote_desc); | |
1977 | ||
1978 | if (from_tty) | |
1979 | { | |
1980 | puts_filtered ("Remote debugging using "); | |
1981 | puts_filtered (name); | |
1982 | puts_filtered ("\n"); | |
1983 | } | |
1984 | ||
1985 | /* If running in asynchronous mode, register the target with the | |
1986 | event loop. Set things up so that when there is an event on the | |
1987 | file descriptor, the event loop will call fetch_inferior_event, | |
1988 | which will do the proper analysis to determine what happened. */ | |
1989 | if (async_p) | |
1990 | add_file_handler (remote_desc->fd, (file_handler_func *) fetch_inferior_event, 0); | |
1991 | ||
c5aa993b | 1992 | push_target (target); /* Switch to using remote target now */ |
43ff13b4 | 1993 | |
5a2468f5 | 1994 | init_packet_config (&remote_protocol_P); |
43ff13b4 | 1995 | |
c5aa993b | 1996 | general_thread = -2; |
43ff13b4 JM |
1997 | continue_thread = -2; |
1998 | ||
1999 | /* Force remote_write_bytes to check whether target supports | |
2000 | binary downloading. */ | |
2001 | remote_binary_checked = 0; | |
2002 | ||
2003 | /* If running asynchronously, set things up for telling the target | |
2004 | to use the extended protocol. This will happen only after the | |
2005 | target has been connected to, in fetch_inferior_event. */ | |
2006 | if (extended_p && async_p) | |
2007 | add_continuation (set_extended_protocol, NULL); | |
2008 | ||
2009 | /* Without this, some commands which require an active target (such | |
2010 | as kill) won't work. This variable serves (at least) double duty | |
2011 | as both the pid of the target process (if it has such), and as a | |
2012 | flag indicating that a target is active. These functions should | |
2013 | be split out into seperate variables, especially since GDB will | |
2014 | someday have a notion of debugging several processes. */ | |
2015 | ||
2016 | inferior_pid = MAGIC_NULL_PID; | |
2017 | /* Start the remote connection; if error (0), discard this target. | |
2018 | In particular, if the user quits, be sure to discard it | |
2019 | (we'd be in an inconsistent state otherwise). */ | |
c5aa993b JM |
2020 | if (!catch_errors (remote_start_remote, NULL, |
2021 | "Couldn't establish connection to remote target\n", | |
43ff13b4 JM |
2022 | RETURN_MASK_ALL)) |
2023 | { | |
2024 | /* Unregister the file descriptor from the event loop. */ | |
2025 | if (async_p) | |
2026 | delete_file_handler (remote_desc->fd); | |
2027 | pop_target (); | |
2028 | return; | |
2029 | } | |
2030 | ||
2031 | if (!async_p) | |
2032 | { | |
c5aa993b JM |
2033 | if (extended_p) |
2034 | { | |
2035 | /* tell the remote that we're using the extended protocol. */ | |
2036 | char *buf = alloca (PBUFSIZ); | |
2037 | putpkt ("!"); | |
2038 | getpkt (buf, 0); | |
2039 | } | |
43ff13b4 JM |
2040 | } |
2041 | } | |
2042 | ||
2043 | /* This will be called by fetch_inferior_event, via the | |
2044 | cmd_continuation pointer, only after the target has stopped. */ | |
c5aa993b | 2045 | static void |
43ff13b4 | 2046 | set_extended_protocol (arg) |
c5aa993b | 2047 | struct continuation_arg *arg; |
43ff13b4 JM |
2048 | { |
2049 | /* tell the remote that we're using the extended protocol. */ | |
2050 | char *buf = alloca (PBUFSIZ); | |
2051 | putpkt ("!"); | |
2052 | getpkt (buf, 0); | |
2053 | } | |
2054 | ||
c906108c SS |
2055 | /* This takes a program previously attached to and detaches it. After |
2056 | this is done, GDB can be used to debug some other program. We | |
2057 | better not have left any breakpoints in the target program or it'll | |
2058 | die when it hits one. */ | |
2059 | ||
2060 | static void | |
2061 | remote_detach (args, from_tty) | |
2062 | char *args; | |
2063 | int from_tty; | |
2064 | { | |
085dd6e6 | 2065 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2066 | |
2067 | if (args) | |
2068 | error ("Argument given to \"detach\" when remotely debugging."); | |
2069 | ||
2070 | /* Tell the remote target to detach. */ | |
2071 | strcpy (buf, "D"); | |
2072 | remote_send (buf); | |
2073 | ||
2074 | pop_target (); | |
2075 | if (from_tty) | |
2076 | puts_filtered ("Ending remote debugging.\n"); | |
2077 | } | |
2078 | ||
43ff13b4 JM |
2079 | /* Same as remote_detach, but with async support. */ |
2080 | static void | |
2081 | remote_async_detach (args, from_tty) | |
2082 | char *args; | |
2083 | int from_tty; | |
2084 | { | |
2085 | char *buf = alloca (PBUFSIZ); | |
2086 | ||
2087 | if (args) | |
2088 | error ("Argument given to \"detach\" when remotely debugging."); | |
2089 | ||
2090 | /* Tell the remote target to detach. */ | |
2091 | strcpy (buf, "D"); | |
2092 | remote_send (buf); | |
2093 | ||
2094 | /* Unregister the file descriptor from the event loop. */ | |
2095 | if (async_p) | |
2096 | delete_file_handler (remote_desc->fd); | |
2097 | ||
2098 | pop_target (); | |
2099 | if (from_tty) | |
2100 | puts_filtered ("Ending remote debugging.\n"); | |
2101 | } | |
2102 | ||
c906108c SS |
2103 | /* Convert hex digit A to a number. */ |
2104 | ||
2105 | int | |
2106 | fromhex (a) | |
2107 | int a; | |
2108 | { | |
2109 | if (a >= '0' && a <= '9') | |
2110 | return a - '0'; | |
2111 | else if (a >= 'a' && a <= 'f') | |
2112 | return a - 'a' + 10; | |
2113 | else if (a >= 'A' && a <= 'F') | |
2114 | return a - 'A' + 10; | |
c5aa993b | 2115 | else |
c906108c SS |
2116 | error ("Reply contains invalid hex digit %d", a); |
2117 | } | |
2118 | ||
2119 | /* Convert number NIB to a hex digit. */ | |
2120 | ||
2121 | static int | |
2122 | tohex (nib) | |
2123 | int nib; | |
2124 | { | |
2125 | if (nib < 10) | |
c5aa993b | 2126 | return '0' + nib; |
c906108c | 2127 | else |
c5aa993b | 2128 | return 'a' + nib - 10; |
c906108c SS |
2129 | } |
2130 | \f | |
2131 | /* Tell the remote machine to resume. */ | |
2132 | ||
2133 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2134 | ||
2135 | static int last_sent_step; | |
2136 | ||
2137 | static void | |
2138 | remote_resume (pid, step, siggnal) | |
2139 | int pid, step; | |
2140 | enum target_signal siggnal; | |
2141 | { | |
085dd6e6 | 2142 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2143 | |
2144 | if (pid == -1) | |
2145 | set_thread (0, 0); /* run any thread */ | |
2146 | else | |
2147 | set_thread (pid, 0); /* run this thread */ | |
2148 | ||
2149 | dcache_flush (remote_dcache); | |
2150 | ||
2151 | last_sent_signal = siggnal; | |
2152 | last_sent_step = step; | |
2153 | ||
2154 | /* A hook for when we need to do something at the last moment before | |
2155 | resumption. */ | |
2156 | if (target_resume_hook) | |
2157 | (*target_resume_hook) (); | |
2158 | ||
2159 | if (siggnal != TARGET_SIGNAL_0) | |
2160 | { | |
2161 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2162 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2163 | buf[2] = tohex ((int) siggnal & 0xf); | |
c906108c SS |
2164 | buf[3] = '\0'; |
2165 | } | |
2166 | else | |
c5aa993b | 2167 | strcpy (buf, step ? "s" : "c"); |
c906108c SS |
2168 | |
2169 | putpkt (buf); | |
2170 | } | |
43ff13b4 JM |
2171 | |
2172 | /* Same as remote_resume, but with async support. */ | |
2173 | static void | |
2174 | remote_async_resume (pid, step, siggnal) | |
2175 | int pid, step; | |
2176 | enum target_signal siggnal; | |
2177 | { | |
2178 | char *buf = alloca (PBUFSIZ); | |
2179 | ||
2180 | if (pid == -1) | |
2181 | set_thread (0, 0); /* run any thread */ | |
2182 | else | |
2183 | set_thread (pid, 0); /* run this thread */ | |
2184 | ||
2185 | dcache_flush (remote_dcache); | |
2186 | ||
2187 | last_sent_signal = siggnal; | |
2188 | last_sent_step = step; | |
2189 | ||
2190 | /* A hook for when we need to do something at the last moment before | |
2191 | resumption. */ | |
2192 | if (target_resume_hook) | |
2193 | (*target_resume_hook) (); | |
2194 | ||
2195 | /* Set things up before execution starts for async commands. */ | |
2196 | /* This function can be entered more than once for the same execution | |
2197 | command, because it is also called by handle_inferior_event. So | |
2198 | we make sure that we don't do the initialization for sync | |
2199 | execution more than once. */ | |
2200 | if (async_p && !target_executing) | |
2201 | { | |
2202 | target_executing = 1; | |
2203 | ||
2204 | /* If the command must look synchronous, fake it, by making gdb | |
2205 | display an empty prompt after the command has completed. Also | |
2206 | disable input. */ | |
2207 | if (sync_execution) | |
2208 | { | |
2209 | push_prompt ("", "", ""); | |
2210 | delete_file_handler (input_fd); | |
2211 | initialize_sigint_signal_handler (); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | if (siggnal != TARGET_SIGNAL_0) | |
2216 | { | |
2217 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b JM |
2218 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
2219 | buf[2] = tohex ((int) siggnal & 0xf); | |
43ff13b4 JM |
2220 | buf[3] = '\0'; |
2221 | } | |
2222 | else | |
c5aa993b | 2223 | strcpy (buf, step ? "s" : "c"); |
43ff13b4 JM |
2224 | |
2225 | putpkt (buf); | |
2226 | } | |
c906108c | 2227 | \f |
43ff13b4 JM |
2228 | |
2229 | /* Set up the signal handler for SIGINT, while the target is | |
2230 | executing, ovewriting the 'regular' SIGINT signal handler. */ | |
2231 | static void | |
2232 | initialize_sigint_signal_handler () | |
2233 | { | |
c5aa993b | 2234 | sigint_remote_token = |
43ff13b4 JM |
2235 | create_async_signal_handler (async_remote_interrupt, NULL); |
2236 | signal (SIGINT, handle_remote_sigint); | |
2237 | } | |
2238 | ||
2239 | /* Signal handler for SIGINT, while the target is executing. */ | |
2240 | static void | |
2241 | handle_remote_sigint (sig) | |
2242 | int sig; | |
2243 | { | |
2244 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2245 | sigint_remote_twice_token = |
43ff13b4 JM |
2246 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2247 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2248 | } | |
2249 | ||
2250 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2251 | sent once. It will take effect the second time that the user sends | |
2252 | a ^C. */ | |
2253 | static void | |
2254 | handle_remote_sigint_twice (sig) | |
2255 | int sig; | |
2256 | { | |
2257 | signal (sig, handle_sigint); | |
c5aa993b | 2258 | sigint_remote_twice_token = |
43ff13b4 JM |
2259 | create_async_signal_handler (async_remote_interrupt, NULL); |
2260 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); | |
2261 | } | |
2262 | ||
2263 | /* Perform the real interruption of hte target execution, in response | |
2264 | to a ^C. */ | |
c5aa993b | 2265 | static void |
43ff13b4 JM |
2266 | async_remote_interrupt (arg) |
2267 | gdb_client_data arg; | |
2268 | { | |
2269 | if (remote_debug) | |
2270 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2271 | ||
2272 | target_stop (); | |
2273 | } | |
2274 | ||
2275 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
2276 | up on the target alltogether. */ | |
c5aa993b | 2277 | static void |
43ff13b4 JM |
2278 | async_remote_interrupt_twice (arg) |
2279 | gdb_client_data arg; | |
2280 | { | |
2281 | interrupt_query (); | |
2282 | signal (SIGINT, handle_remote_sigint); | |
2283 | } | |
2284 | ||
2285 | /* Reinstall the usual SIGINT handlers, after the target has | |
2286 | stopped. */ | |
2287 | void | |
2288 | cleanup_sigint_signal_handler () | |
2289 | { | |
2290 | signal (SIGINT, handle_sigint); | |
2291 | if (sigint_remote_twice_token) | |
c5aa993b | 2292 | delete_async_signal_handler ((async_signal_handler **) & sigint_remote_twice_token); |
43ff13b4 | 2293 | if (sigint_remote_token) |
c5aa993b | 2294 | delete_async_signal_handler ((async_signal_handler **) & sigint_remote_token); |
43ff13b4 JM |
2295 | } |
2296 | ||
c906108c SS |
2297 | /* Send ^C to target to halt it. Target will respond, and send us a |
2298 | packet. */ | |
c906108c SS |
2299 | static void (*ofunc) PARAMS ((int)); |
2300 | ||
7a292a7a SS |
2301 | /* The command line interface's stop routine. This function is installed |
2302 | as a signal handler for SIGINT. The first time a user requests a | |
2303 | stop, we call remote_stop to send a break or ^C. If there is no | |
2304 | response from the target (it didn't stop when the user requested it), | |
2305 | we ask the user if he'd like to detach from the target. */ | |
c906108c SS |
2306 | static void |
2307 | remote_interrupt (signo) | |
2308 | int signo; | |
2309 | { | |
7a292a7a SS |
2310 | /* If this doesn't work, try more severe steps. */ |
2311 | signal (signo, remote_interrupt_twice); | |
2312 | ||
2313 | if (remote_debug) | |
0f71a2f6 | 2314 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2315 | |
2316 | target_stop (); | |
2317 | } | |
2318 | ||
2319 | /* The user typed ^C twice. */ | |
2320 | ||
2321 | static void | |
2322 | remote_interrupt_twice (signo) | |
2323 | int signo; | |
2324 | { | |
2325 | signal (signo, ofunc); | |
2326 | interrupt_query (); | |
c906108c SS |
2327 | signal (signo, remote_interrupt); |
2328 | } | |
7a292a7a SS |
2329 | |
2330 | /* This is the generic stop called via the target vector. When a target | |
2331 | interrupt is requested, either by the command line or the GUI, we | |
2332 | will eventually end up here. */ | |
c906108c SS |
2333 | static void |
2334 | remote_stop () | |
2335 | { | |
7a292a7a SS |
2336 | /* Send a break or a ^C, depending on user preference. */ |
2337 | if (remote_debug) | |
0f71a2f6 | 2338 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2339 | |
7a292a7a SS |
2340 | if (remote_break) |
2341 | SERIAL_SEND_BREAK (remote_desc); | |
c906108c | 2342 | else |
7a292a7a | 2343 | SERIAL_WRITE (remote_desc, "\003", 1); |
c906108c SS |
2344 | } |
2345 | ||
2346 | /* Ask the user what to do when an interrupt is received. */ | |
2347 | ||
2348 | static void | |
2349 | interrupt_query () | |
2350 | { | |
2351 | target_terminal_ours (); | |
2352 | ||
2353 | if (query ("Interrupted while waiting for the program.\n\ | |
2354 | Give up (and stop debugging it)? ")) | |
2355 | { | |
2356 | target_mourn_inferior (); | |
2357 | return_to_top_level (RETURN_QUIT); | |
2358 | } | |
2359 | ||
2360 | target_terminal_inferior (); | |
2361 | } | |
2362 | ||
2363 | /* If nonzero, ignore the next kill. */ | |
2364 | ||
2365 | int kill_kludge; | |
2366 | ||
2367 | void | |
2368 | remote_console_output (msg) | |
2369 | char *msg; | |
2370 | { | |
2371 | char *p; | |
2372 | ||
c5aa993b | 2373 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2374 | { |
2375 | char tb[2]; | |
2376 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2377 | tb[0] = c; | |
2378 | tb[1] = 0; | |
43ff13b4 | 2379 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c SS |
2380 | } |
2381 | } | |
2382 | ||
0f71a2f6 JM |
2383 | /* Wait until the remote machine stops, then return, |
2384 | storing status in STATUS just as `wait' would. | |
2385 | Returns "pid", which in the case of a multi-threaded | |
2386 | remote OS, is the thread-id. */ | |
c906108c SS |
2387 | |
2388 | static int | |
2389 | remote_wait (pid, status) | |
2390 | int pid; | |
2391 | struct target_waitstatus *status; | |
2392 | { | |
085dd6e6 | 2393 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
2394 | int thread_num = -1; |
2395 | ||
2396 | status->kind = TARGET_WAITKIND_EXITED; | |
2397 | status->value.integer = 0; | |
2398 | ||
2399 | while (1) | |
2400 | { | |
2401 | unsigned char *p; | |
2402 | ||
c906108c SS |
2403 | ofunc = signal (SIGINT, remote_interrupt); |
2404 | getpkt ((char *) buf, 1); | |
2405 | signal (SIGINT, ofunc); | |
2406 | ||
2407 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2408 | collection of trace data) every time the target stops. */ |
c906108c SS |
2409 | if (target_wait_loop_hook) |
2410 | (*target_wait_loop_hook) (); | |
2411 | ||
2412 | switch (buf[0]) | |
2413 | { | |
2414 | case 'E': /* Error of some sort */ | |
2415 | warning ("Remote failure reply: %s", buf); | |
2416 | continue; | |
2417 | case 'T': /* Status with PC, SP, FP, ... */ | |
2418 | { | |
2419 | int i; | |
2420 | long regno; | |
2421 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2422 | ||
2423 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2424 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2425 | ss = signal number |
2426 | n... = register number | |
2427 | r... = register contents | |
2428 | */ | |
c906108c SS |
2429 | p = &buf[3]; /* after Txx */ |
2430 | ||
2431 | while (*p) | |
2432 | { | |
2433 | unsigned char *p1; | |
2434 | char *p_temp; | |
2435 | ||
2436 | /* Read the register number */ | |
2437 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2438 | p1 = (unsigned char *) p_temp; |
c906108c | 2439 | |
c5aa993b | 2440 | if (p1 == p) /* No register number present here */ |
c906108c SS |
2441 | { |
2442 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2443 | if (p1 == NULL) | |
2444 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2445 | Packet: '%s'\n", | |
2446 | p, buf); | |
2447 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2448 | { | |
2449 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2450 | record_currthread (thread_num); | |
2451 | p = (unsigned char *) p_temp; | |
2452 | } | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | p = p1; | |
2457 | ||
2458 | if (*p++ != ':') | |
2459 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2460 | Packet: '%s'\n", | |
2461 | p, buf); | |
2462 | ||
2463 | if (regno >= NUM_REGS) | |
2464 | warning ("Remote sent bad register number %ld: %s\n\ | |
2465 | Packet: '%s'\n", | |
2466 | regno, p, buf); | |
2467 | ||
2468 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2469 | { | |
2470 | if (p[0] == 0 || p[1] == 0) | |
2471 | warning ("Remote reply is too short: %s", buf); | |
2472 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2473 | p += 2; | |
2474 | } | |
2475 | supply_register (regno, regs); | |
2476 | } | |
2477 | ||
2478 | if (*p++ != ';') | |
2479 | { | |
2480 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2481 | warning (" here: %s", p); |
c906108c SS |
2482 | } |
2483 | } | |
2484 | } | |
2485 | /* fall through */ | |
2486 | case 'S': /* Old style status, just signal only */ | |
2487 | status->kind = TARGET_WAITKIND_STOPPED; | |
2488 | status->value.sig = (enum target_signal) | |
2489 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2490 | ||
0f71a2f6 JM |
2491 | if (buf[3] == 'p') |
2492 | { | |
2493 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2494 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2495 | |
2496 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2497 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2498 | value_from_string ("PDEBUG-")); |
2499 | cisco_kernel_mode = 0; | |
2500 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2501 | record_currthread (thread_num); | |
2502 | } | |
2503 | else if (buf[3] == 'k') | |
2504 | { | |
2505 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2506 | (so that it can be used in the GDB prompt if desired). */ |
0f71a2f6 JM |
2507 | |
2508 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2509 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
0f71a2f6 JM |
2510 | value_from_string ("KDEBUG-")); |
2511 | cisco_kernel_mode = 1; | |
2512 | } | |
c906108c | 2513 | goto got_status; |
0f71a2f6 JM |
2514 | case 'N': /* Cisco special: status and offsets */ |
2515 | { | |
2516 | bfd_vma text_addr, data_addr, bss_addr; | |
2517 | bfd_signed_vma text_off, data_off, bss_off; | |
2518 | unsigned char *p1; | |
2519 | ||
2520 | status->kind = TARGET_WAITKIND_STOPPED; | |
2521 | status->value.sig = (enum target_signal) | |
2522 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2523 | ||
c5aa993b | 2524 | if (symfile_objfile == NULL) |
0f71a2f6 JM |
2525 | { |
2526 | warning ("Relocation packet recieved with no symbol file. \ | |
2527 | Packet Dropped"); | |
2528 | goto got_status; | |
2529 | } | |
2530 | ||
2531 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2532 | * where AA is the signal number, TT is the new text | |
2533 | * address, DD * is the new data address, and BB is the | |
2534 | * new bss address. */ | |
2535 | ||
2536 | p = &buf[3]; | |
2537 | text_addr = strtoul (p, (char **) &p1, 16); | |
2538 | if (p1 == p || *p1 != ';') | |
2539 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2540 | p = p1 + 1; | |
2541 | data_addr = strtoul (p, (char **) &p1, 16); | |
2542 | if (p1 == p || *p1 != ';') | |
2543 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2544 | p = p1 + 1; | |
2545 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2546 | if (p1 == p) |
0f71a2f6 JM |
2547 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2548 | ||
2549 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2550 | &text_off, &data_off, &bss_off) | |
2551 | == 0) | |
c5aa993b | 2552 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
0f71a2f6 JM |
2553 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2554 | ||
2555 | goto got_status; | |
2556 | } | |
c906108c SS |
2557 | case 'W': /* Target exited */ |
2558 | { | |
2559 | /* The remote process exited. */ | |
2560 | status->kind = TARGET_WAITKIND_EXITED; | |
2561 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2562 | goto got_status; | |
2563 | } | |
2564 | case 'X': | |
2565 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2566 | status->value.sig = (enum target_signal) | |
2567 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2568 | kill_kludge = 1; | |
2569 | ||
2570 | goto got_status; | |
2571 | case 'O': /* Console output */ | |
2572 | remote_console_output (buf + 1); | |
2573 | continue; | |
2574 | case '\0': | |
2575 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2576 | { | |
2577 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2578 | the remote system doesn't support it. */ |
c906108c SS |
2579 | target_terminal_ours_for_output (); |
2580 | printf_filtered | |
2581 | ("Can't send signals to this remote system. %s not sent.\n", | |
2582 | target_signal_to_name (last_sent_signal)); | |
2583 | last_sent_signal = TARGET_SIGNAL_0; | |
2584 | target_terminal_inferior (); | |
2585 | ||
2586 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2587 | putpkt ((char *) buf); | |
2588 | continue; | |
2589 | } | |
2590 | /* else fallthrough */ | |
2591 | default: | |
2592 | warning ("Invalid remote reply: %s", buf); | |
2593 | continue; | |
2594 | } | |
2595 | } | |
c5aa993b | 2596 | got_status: |
c906108c SS |
2597 | if (thread_num != -1) |
2598 | { | |
c906108c SS |
2599 | return thread_num; |
2600 | } | |
2601 | return inferior_pid; | |
2602 | } | |
2603 | ||
43ff13b4 JM |
2604 | /* Async version of remote_wait. */ |
2605 | static int | |
2606 | remote_async_wait (pid, status) | |
2607 | int pid; | |
2608 | struct target_waitstatus *status; | |
2609 | { | |
2610 | unsigned char *buf = alloca (PBUFSIZ); | |
2611 | int thread_num = -1; | |
2612 | ||
2613 | status->kind = TARGET_WAITKIND_EXITED; | |
2614 | status->value.integer = 0; | |
2615 | ||
2616 | while (1) | |
2617 | { | |
2618 | unsigned char *p; | |
c5aa993b | 2619 | |
43ff13b4 JM |
2620 | if (!async_p) |
2621 | ofunc = signal (SIGINT, remote_interrupt); | |
2622 | getpkt ((char *) buf, 1); | |
2623 | if (!async_p) | |
2624 | signal (SIGINT, ofunc); | |
2625 | ||
2626 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2627 | collection of trace data) every time the target stops. */ |
43ff13b4 JM |
2628 | if (target_wait_loop_hook) |
2629 | (*target_wait_loop_hook) (); | |
2630 | ||
2631 | switch (buf[0]) | |
2632 | { | |
2633 | case 'E': /* Error of some sort */ | |
2634 | warning ("Remote failure reply: %s", buf); | |
2635 | continue; | |
2636 | case 'T': /* Status with PC, SP, FP, ... */ | |
2637 | { | |
2638 | int i; | |
2639 | long regno; | |
2640 | char regs[MAX_REGISTER_RAW_SIZE]; | |
2641 | ||
2642 | /* Expedited reply, containing Signal, {regno, reg} repeat */ | |
2643 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
c5aa993b JM |
2644 | ss = signal number |
2645 | n... = register number | |
2646 | r... = register contents | |
2647 | */ | |
43ff13b4 JM |
2648 | p = &buf[3]; /* after Txx */ |
2649 | ||
2650 | while (*p) | |
2651 | { | |
2652 | unsigned char *p1; | |
2653 | char *p_temp; | |
2654 | ||
2655 | /* Read the register number */ | |
2656 | regno = strtol ((const char *) p, &p_temp, 16); | |
c5aa993b | 2657 | p1 = (unsigned char *) p_temp; |
43ff13b4 | 2658 | |
c5aa993b | 2659 | if (p1 == p) /* No register number present here */ |
43ff13b4 JM |
2660 | { |
2661 | p1 = (unsigned char *) strchr ((const char *) p, ':'); | |
2662 | if (p1 == NULL) | |
2663 | warning ("Malformed packet(a) (missing colon): %s\n\ | |
2664 | Packet: '%s'\n", | |
2665 | p, buf); | |
2666 | if (strncmp ((const char *) p, "thread", p1 - p) == 0) | |
2667 | { | |
2668 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2669 | record_currthread (thread_num); | |
2670 | p = (unsigned char *) p_temp; | |
2671 | } | |
2672 | } | |
2673 | else | |
2674 | { | |
2675 | p = p1; | |
2676 | ||
2677 | if (*p++ != ':') | |
2678 | warning ("Malformed packet(b) (missing colon): %s\n\ | |
2679 | Packet: '%s'\n", | |
2680 | p, buf); | |
2681 | ||
2682 | if (regno >= NUM_REGS) | |
2683 | warning ("Remote sent bad register number %ld: %s\n\ | |
2684 | Packet: '%s'\n", | |
2685 | regno, p, buf); | |
2686 | ||
2687 | for (i = 0; i < REGISTER_RAW_SIZE (regno); i++) | |
2688 | { | |
2689 | if (p[0] == 0 || p[1] == 0) | |
2690 | warning ("Remote reply is too short: %s", buf); | |
2691 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2692 | p += 2; | |
2693 | } | |
2694 | supply_register (regno, regs); | |
2695 | } | |
2696 | ||
2697 | if (*p++ != ';') | |
2698 | { | |
2699 | warning ("Remote register badly formatted: %s", buf); | |
c5aa993b | 2700 | warning (" here: %s", p); |
43ff13b4 JM |
2701 | } |
2702 | } | |
2703 | } | |
2704 | /* fall through */ | |
2705 | case 'S': /* Old style status, just signal only */ | |
2706 | status->kind = TARGET_WAITKIND_STOPPED; | |
2707 | status->value.sig = (enum target_signal) | |
2708 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2709 | ||
2710 | if (buf[3] == 'p') | |
2711 | { | |
2712 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2713 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2714 | |
2715 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2716 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2717 | value_from_string ("PDEBUG-")); |
2718 | cisco_kernel_mode = 0; | |
2719 | thread_num = strtol ((const char *) &buf[4], NULL, 16); | |
2720 | record_currthread (thread_num); | |
2721 | } | |
2722 | else if (buf[3] == 'k') | |
2723 | { | |
2724 | /* Export Cisco kernel mode as a convenience variable | |
c5aa993b | 2725 | (so that it can be used in the GDB prompt if desired). */ |
43ff13b4 JM |
2726 | |
2727 | if (cisco_kernel_mode == 1) | |
c5aa993b | 2728 | set_internalvar (lookup_internalvar ("cisco_kernel_mode"), |
43ff13b4 JM |
2729 | value_from_string ("KDEBUG-")); |
2730 | cisco_kernel_mode = 1; | |
2731 | } | |
2732 | goto got_status; | |
2733 | case 'N': /* Cisco special: status and offsets */ | |
2734 | { | |
2735 | bfd_vma text_addr, data_addr, bss_addr; | |
2736 | bfd_signed_vma text_off, data_off, bss_off; | |
2737 | unsigned char *p1; | |
2738 | ||
2739 | status->kind = TARGET_WAITKIND_STOPPED; | |
2740 | status->value.sig = (enum target_signal) | |
2741 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2742 | ||
c5aa993b | 2743 | if (symfile_objfile == NULL) |
43ff13b4 JM |
2744 | { |
2745 | warning ("Relocation packet recieved with no symbol file. \ | |
2746 | Packet Dropped"); | |
2747 | goto got_status; | |
2748 | } | |
2749 | ||
2750 | /* Relocate object file. Buffer format is NAATT;DD;BB | |
2751 | * where AA is the signal number, TT is the new text | |
2752 | * address, DD * is the new data address, and BB is the | |
2753 | * new bss address. */ | |
2754 | ||
2755 | p = &buf[3]; | |
2756 | text_addr = strtoul (p, (char **) &p1, 16); | |
2757 | if (p1 == p || *p1 != ';') | |
2758 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2759 | p = p1 + 1; | |
2760 | data_addr = strtoul (p, (char **) &p1, 16); | |
2761 | if (p1 == p || *p1 != ';') | |
2762 | warning ("Malformed relocation packet: Packet '%s'", buf); | |
2763 | p = p1 + 1; | |
2764 | bss_addr = strtoul (p, (char **) &p1, 16); | |
c5aa993b | 2765 | if (p1 == p) |
43ff13b4 JM |
2766 | warning ("Malformed relocation packet: Packet '%s'", buf); |
2767 | ||
2768 | if (remote_cisco_section_offsets (text_addr, data_addr, bss_addr, | |
2769 | &text_off, &data_off, &bss_off) | |
2770 | == 0) | |
c5aa993b | 2771 | if (text_off != 0 || data_off != 0 || bss_off != 0) |
43ff13b4 JM |
2772 | remote_cisco_objfile_relocate (text_off, data_off, bss_off); |
2773 | ||
2774 | goto got_status; | |
2775 | } | |
2776 | case 'W': /* Target exited */ | |
2777 | { | |
2778 | /* The remote process exited. */ | |
2779 | status->kind = TARGET_WAITKIND_EXITED; | |
2780 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2781 | goto got_status; | |
2782 | } | |
2783 | case 'X': | |
2784 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2785 | status->value.sig = (enum target_signal) | |
2786 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2787 | kill_kludge = 1; | |
2788 | ||
2789 | goto got_status; | |
2790 | case 'O': /* Console output */ | |
2791 | remote_console_output (buf + 1); | |
2792 | continue; | |
2793 | case '\0': | |
2794 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2795 | { | |
2796 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2797 | the remote system doesn't support it. */ |
43ff13b4 JM |
2798 | target_terminal_ours_for_output (); |
2799 | printf_filtered | |
2800 | ("Can't send signals to this remote system. %s not sent.\n", | |
2801 | target_signal_to_name (last_sent_signal)); | |
2802 | last_sent_signal = TARGET_SIGNAL_0; | |
2803 | target_terminal_inferior (); | |
2804 | ||
2805 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2806 | putpkt ((char *) buf); | |
2807 | continue; | |
2808 | } | |
2809 | /* else fallthrough */ | |
2810 | default: | |
2811 | warning ("Invalid remote reply: %s", buf); | |
2812 | continue; | |
2813 | } | |
2814 | } | |
c5aa993b | 2815 | got_status: |
43ff13b4 JM |
2816 | if (thread_num != -1) |
2817 | { | |
2818 | return thread_num; | |
2819 | } | |
2820 | return inferior_pid; | |
2821 | } | |
2822 | ||
c906108c SS |
2823 | /* Number of bytes of registers this stub implements. */ |
2824 | ||
2825 | static int register_bytes_found; | |
2826 | ||
2827 | /* Read the remote registers into the block REGS. */ | |
2828 | /* Currently we just read all the registers, so we don't use regno. */ | |
2829 | ||
2830 | /* ARGSUSED */ | |
2831 | static void | |
2832 | remote_fetch_registers (regno) | |
2833 | int regno; | |
2834 | { | |
085dd6e6 | 2835 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2836 | int i; |
2837 | char *p; | |
2838 | char regs[REGISTER_BYTES]; | |
2839 | ||
2840 | set_thread (inferior_pid, 1); | |
2841 | ||
2842 | sprintf (buf, "g"); | |
2843 | remote_send (buf); | |
2844 | ||
2845 | if (remote_register_buf_size == 0) | |
2846 | remote_register_buf_size = strlen (buf); | |
2847 | ||
2848 | /* Unimplemented registers read as all bits zero. */ | |
2849 | memset (regs, 0, REGISTER_BYTES); | |
2850 | ||
2851 | /* We can get out of synch in various cases. If the first character | |
2852 | in the buffer is not a hex character, assume that has happened | |
2853 | and try to fetch another packet to read. */ | |
2854 | while ((buf[0] < '0' || buf[0] > '9') | |
2855 | && (buf[0] < 'a' || buf[0] > 'f') | |
2856 | && buf[0] != 'x') /* New: unavailable register value */ | |
2857 | { | |
2858 | if (remote_debug) | |
0f71a2f6 JM |
2859 | fprintf_unfiltered (gdb_stdlog, |
2860 | "Bad register packet; fetching a new packet\n"); | |
c906108c SS |
2861 | getpkt (buf, 0); |
2862 | } | |
2863 | ||
2864 | /* Reply describes registers byte by byte, each byte encoded as two | |
2865 | hex characters. Suck them all up, then supply them to the | |
2866 | register cacheing/storage mechanism. */ | |
2867 | ||
2868 | p = buf; | |
2869 | for (i = 0; i < REGISTER_BYTES; i++) | |
2870 | { | |
2871 | if (p[0] == 0) | |
2872 | break; | |
2873 | if (p[1] == 0) | |
2874 | { | |
2875 | warning ("Remote reply is of odd length: %s", buf); | |
2876 | /* Don't change register_bytes_found in this case, and don't | |
2877 | print a second warning. */ | |
2878 | goto supply_them; | |
2879 | } | |
2880 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 2881 | regs[i] = 0; /* 'x' */ |
c906108c SS |
2882 | else |
2883 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2884 | p += 2; | |
2885 | } | |
2886 | ||
2887 | if (i != register_bytes_found) | |
2888 | { | |
2889 | register_bytes_found = i; | |
2890 | #ifdef REGISTER_BYTES_OK | |
2891 | if (!REGISTER_BYTES_OK (i)) | |
2892 | warning ("Remote reply is too short: %s", buf); | |
2893 | #endif | |
2894 | } | |
c5aa993b JM |
2895 | |
2896 | supply_them: | |
c906108c | 2897 | for (i = 0; i < NUM_REGS; i++) |
c5aa993b JM |
2898 | { |
2899 | supply_register (i, ®s[REGISTER_BYTE (i)]); | |
2900 | if (buf[REGISTER_BYTE (i) * 2] == 'x') | |
2901 | register_valid[i] = -1; /* register value not available */ | |
2902 | } | |
c906108c SS |
2903 | } |
2904 | ||
2905 | /* Prepare to store registers. Since we may send them all (using a | |
2906 | 'G' request), we have to read out the ones we don't want to change | |
2907 | first. */ | |
2908 | ||
c5aa993b | 2909 | static void |
c906108c SS |
2910 | remote_prepare_to_store () |
2911 | { | |
2912 | /* Make sure the entire registers array is valid. */ | |
5a2468f5 JM |
2913 | switch (remote_protocol_P.support) |
2914 | { | |
2915 | case PACKET_DISABLE: | |
2916 | case PACKET_SUPPORT_UNKNOWN: | |
2917 | read_register_bytes (0, (char *) NULL, REGISTER_BYTES); | |
2918 | break; | |
2919 | case PACKET_ENABLE: | |
2920 | break; | |
2921 | } | |
2922 | } | |
2923 | ||
2924 | /* Helper: Attempt to store REGNO using the P packet. Return fail IFF | |
2925 | packet was not recognized. */ | |
2926 | ||
2927 | static int | |
2928 | store_register_using_P (regno) | |
2929 | int regno; | |
2930 | { | |
2931 | /* Try storing a single register. */ | |
2932 | char *buf = alloca (PBUFSIZ); | |
2933 | char *regp; | |
2934 | char *p; | |
2935 | int i; | |
2936 | ||
2937 | sprintf (buf, "P%x=", regno); | |
2938 | p = buf + strlen (buf); | |
2939 | regp = ®isters[REGISTER_BYTE (regno)]; | |
2940 | for (i = 0; i < REGISTER_RAW_SIZE (regno); ++i) | |
2941 | { | |
2942 | *p++ = tohex ((regp[i] >> 4) & 0xf); | |
2943 | *p++ = tohex (regp[i] & 0xf); | |
2944 | } | |
2945 | *p = '\0'; | |
2946 | remote_send (buf); | |
2947 | ||
2948 | return buf[0] != '\0'; | |
c906108c SS |
2949 | } |
2950 | ||
5a2468f5 | 2951 | |
c906108c SS |
2952 | /* Store register REGNO, or all registers if REGNO == -1, from the contents |
2953 | of REGISTERS. FIXME: ignores errors. */ | |
2954 | ||
2955 | static void | |
2956 | remote_store_registers (regno) | |
2957 | int regno; | |
2958 | { | |
085dd6e6 | 2959 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
2960 | int i; |
2961 | char *p; | |
2962 | ||
2963 | set_thread (inferior_pid, 1); | |
2964 | ||
5a2468f5 | 2965 | if (regno >= 0) |
c906108c | 2966 | { |
5a2468f5 | 2967 | switch (remote_protocol_P.support) |
c906108c | 2968 | { |
5a2468f5 JM |
2969 | case PACKET_DISABLE: |
2970 | break; | |
2971 | case PACKET_ENABLE: | |
2972 | if (store_register_using_P (regno)) | |
2973 | return; | |
2974 | else | |
2975 | error ("Protocol error: P packet not recognized by stub"); | |
2976 | case PACKET_SUPPORT_UNKNOWN: | |
2977 | if (store_register_using_P (regno)) | |
2978 | { | |
2979 | /* The stub recognized the 'P' packet. Remember this. */ | |
2980 | remote_protocol_P.support = PACKET_ENABLE; | |
2981 | return; | |
2982 | } | |
2983 | else | |
2984 | { | |
2985 | /* The stub does not support the 'P' packet. Use 'G' | |
2986 | instead, and don't try using 'P' in the future (it | |
2987 | will just waste our time). */ | |
2988 | remote_protocol_P.support = PACKET_DISABLE; | |
2989 | break; | |
2990 | } | |
c906108c | 2991 | } |
c906108c SS |
2992 | } |
2993 | ||
2994 | buf[0] = 'G'; | |
2995 | ||
2996 | /* Command describes registers byte by byte, | |
2997 | each byte encoded as two hex characters. */ | |
2998 | ||
2999 | p = buf + 1; | |
3000 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ | |
3001 | for (i = 0; i < register_bytes_found; i++) | |
3002 | { | |
3003 | *p++ = tohex ((registers[i] >> 4) & 0xf); | |
3004 | *p++ = tohex (registers[i] & 0xf); | |
3005 | } | |
3006 | *p = '\0'; | |
3007 | ||
3008 | remote_send (buf); | |
3009 | } | |
3010 | ||
3011 | /* Use of the data cache *used* to be disabled because it loses for looking | |
3012 | at and changing hardware I/O ports and the like. Accepting `volatile' | |
3013 | would perhaps be one way to fix it. Another idea would be to use the | |
3014 | executable file for the text segment (for all SEC_CODE sections? | |
3015 | For all SEC_READONLY sections?). This has problems if you want to | |
3016 | actually see what the memory contains (e.g. self-modifying code, | |
3017 | clobbered memory, user downloaded the wrong thing). | |
3018 | ||
3019 | Because it speeds so much up, it's now enabled, if you're playing | |
3020 | with registers you turn it of (set remotecache 0). */ | |
3021 | ||
3022 | /* Read a word from remote address ADDR and return it. | |
3023 | This goes through the data cache. */ | |
3024 | ||
c5aa993b | 3025 | #if 0 /* unused? */ |
c906108c SS |
3026 | static int |
3027 | remote_fetch_word (addr) | |
3028 | CORE_ADDR addr; | |
3029 | { | |
3030 | return dcache_fetch (remote_dcache, addr); | |
3031 | } | |
3032 | ||
3033 | /* Write a word WORD into remote address ADDR. | |
3034 | This goes through the data cache. */ | |
3035 | ||
3036 | static void | |
3037 | remote_store_word (addr, word) | |
3038 | CORE_ADDR addr; | |
3039 | int word; | |
3040 | { | |
3041 | dcache_poke (remote_dcache, addr, word); | |
3042 | } | |
c5aa993b | 3043 | #endif /* 0 (unused?) */ |
c906108c SS |
3044 | \f |
3045 | ||
c5aa993b | 3046 | |
c906108c SS |
3047 | /* Return the number of hex digits in num. */ |
3048 | ||
3049 | static int | |
3050 | hexnumlen (num) | |
3051 | ULONGEST num; | |
3052 | { | |
3053 | int i; | |
3054 | ||
3055 | for (i = 0; num != 0; i++) | |
3056 | num >>= 4; | |
3057 | ||
3058 | return max (i, 1); | |
3059 | } | |
3060 | ||
3061 | /* Set BUF to the hex digits representing NUM. */ | |
3062 | ||
3063 | static int | |
3064 | hexnumstr (buf, num) | |
3065 | char *buf; | |
3066 | ULONGEST num; | |
3067 | { | |
3068 | int i; | |
3069 | int len = hexnumlen (num); | |
3070 | ||
3071 | buf[len] = '\0'; | |
3072 | ||
3073 | for (i = len - 1; i >= 0; i--) | |
3074 | { | |
c5aa993b | 3075 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3076 | num >>= 4; |
3077 | } | |
3078 | ||
3079 | return len; | |
3080 | } | |
3081 | ||
3082 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ | |
3083 | ||
3084 | static CORE_ADDR | |
3085 | remote_address_masked (addr) | |
3086 | CORE_ADDR addr; | |
3087 | { | |
3088 | if (remote_address_size > 0 | |
3089 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3090 | { | |
3091 | /* Only create a mask when that mask can safely be constructed | |
3092 | in a ULONGEST variable. */ | |
3093 | ULONGEST mask = 1; | |
3094 | mask = (mask << remote_address_size) - 1; | |
3095 | addr &= mask; | |
3096 | } | |
3097 | return addr; | |
3098 | } | |
3099 | ||
3100 | /* Determine whether the remote target supports binary downloading. | |
3101 | This is accomplished by sending a no-op memory write of zero length | |
3102 | to the target at the specified address. It does not suffice to send | |
3103 | the whole packet, since many stubs strip the eighth bit and subsequently | |
7a292a7a SS |
3104 | compute a wrong checksum, which causes real havoc with remote_write_bytes. |
3105 | ||
3106 | NOTE: This can still lose if the serial line is not eight-bit clean. In | |
3107 | cases like this, the user should clear "remotebinarydownload". */ | |
c906108c SS |
3108 | static void |
3109 | check_binary_download (addr) | |
3110 | CORE_ADDR addr; | |
3111 | { | |
3112 | if (remote_binary_download && !remote_binary_checked) | |
3113 | { | |
085dd6e6 JM |
3114 | char *buf = alloca (PBUFSIZ); |
3115 | char *p; | |
c906108c SS |
3116 | remote_binary_checked = 1; |
3117 | ||
3118 | p = buf; | |
3119 | *p++ = 'X'; | |
3120 | p += hexnumstr (p, (ULONGEST) addr); | |
3121 | *p++ = ','; | |
3122 | p += hexnumstr (p, (ULONGEST) 0); | |
3123 | *p++ = ':'; | |
3124 | *p = '\0'; | |
3125 | ||
3126 | putpkt_binary (buf, (int) (p - buf)); | |
3127 | getpkt (buf, 0); | |
3128 | ||
3129 | if (buf[0] == '\0') | |
3130 | remote_binary_download = 0; | |
3131 | } | |
3132 | ||
3133 | if (remote_debug) | |
3134 | { | |
3135 | if (remote_binary_download) | |
0f71a2f6 JM |
3136 | fprintf_unfiltered (gdb_stdlog, |
3137 | "binary downloading suppported by target\n"); | |
c906108c | 3138 | else |
0f71a2f6 JM |
3139 | fprintf_unfiltered (gdb_stdlog, |
3140 | "binary downloading NOT suppported by target\n"); | |
c906108c SS |
3141 | } |
3142 | } | |
3143 | ||
3144 | /* Write memory data directly to the remote machine. | |
3145 | This does not inform the data cache; the data cache uses this. | |
3146 | MEMADDR is the address in the remote memory space. | |
3147 | MYADDR is the address of the buffer in our space. | |
3148 | LEN is the number of bytes. | |
3149 | ||
3150 | Returns number of bytes transferred, or 0 for error. */ | |
3151 | ||
3152 | static int | |
3153 | remote_write_bytes (memaddr, myaddr, len) | |
3154 | CORE_ADDR memaddr; | |
3155 | char *myaddr; | |
3156 | int len; | |
3157 | { | |
085dd6e6 | 3158 | unsigned char *buf = alloca (PBUFSIZ); |
c906108c SS |
3159 | int max_buf_size; /* Max size of packet output buffer */ |
3160 | int origlen; | |
3161 | ||
3162 | /* Verify that the target can support a binary download */ | |
3163 | check_binary_download (memaddr); | |
3164 | ||
3165 | /* Chop the transfer down if necessary */ | |
3166 | ||
3167 | max_buf_size = min (remote_write_size, PBUFSIZ); | |
3168 | if (remote_register_buf_size != 0) | |
3169 | max_buf_size = min (max_buf_size, remote_register_buf_size); | |
3170 | ||
7a292a7a | 3171 | /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */ |
c906108c SS |
3172 | max_buf_size -= 2 + hexnumlen (memaddr + len - 1) + 1 + hexnumlen (len) + 4; |
3173 | ||
3174 | origlen = len; | |
3175 | while (len > 0) | |
3176 | { | |
c906108c SS |
3177 | unsigned char *p, *plen; |
3178 | int todo; | |
3179 | int i; | |
3180 | ||
3181 | /* construct "M"<memaddr>","<len>":" */ | |
3182 | /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */ | |
3183 | memaddr = remote_address_masked (memaddr); | |
3184 | p = buf; | |
3185 | if (remote_binary_download) | |
3186 | { | |
3187 | *p++ = 'X'; | |
3188 | todo = min (len, max_buf_size); | |
3189 | } | |
3190 | else | |
3191 | { | |
3192 | *p++ = 'M'; | |
c5aa993b | 3193 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3194 | } |
3195 | ||
3196 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3197 | *p++ = ','; | |
3198 | ||
7a292a7a | 3199 | plen = p; /* remember where len field goes */ |
c906108c SS |
3200 | p += hexnumstr (p, (ULONGEST) todo); |
3201 | *p++ = ':'; | |
3202 | *p = '\0'; | |
3203 | ||
3204 | /* We send target system values byte by byte, in increasing byte | |
c5aa993b JM |
3205 | addresses, each byte encoded as two hex characters (or one |
3206 | binary character). */ | |
c906108c SS |
3207 | if (remote_binary_download) |
3208 | { | |
7a292a7a | 3209 | int escaped = 0; |
c5aa993b | 3210 | for (i = 0; |
c906108c | 3211 | (i < todo) && (i + escaped) < (max_buf_size - 2); |
7a292a7a | 3212 | i++) |
c5aa993b JM |
3213 | { |
3214 | switch (myaddr[i] & 0xff) | |
3215 | { | |
3216 | case '$': | |
3217 | case '#': | |
3218 | case 0x7d: | |
3219 | /* These must be escaped */ | |
3220 | escaped++; | |
3221 | *p++ = 0x7d; | |
3222 | *p++ = (myaddr[i] & 0xff) ^ 0x20; | |
3223 | break; | |
3224 | default: | |
3225 | *p++ = myaddr[i] & 0xff; | |
3226 | break; | |
3227 | } | |
3228 | } | |
3229 | ||
3230 | if (i < todo) | |
3231 | { | |
3232 | /* Escape chars have filled up the buffer prematurely, | |
3233 | and we have actually sent fewer bytes than planned. | |
3234 | Fix-up the length field of the packet. */ | |
c906108c SS |
3235 | |
3236 | /* FIXME: will fail if new len is a shorter string than | |
c5aa993b | 3237 | old len. */ |
c906108c | 3238 | |
c5aa993b JM |
3239 | plen += hexnumstr (plen, (ULONGEST) i); |
3240 | *plen++ = ':'; | |
3241 | } | |
c906108c SS |
3242 | } |
3243 | else | |
3244 | { | |
3245 | for (i = 0; i < todo; i++) | |
3246 | { | |
3247 | *p++ = tohex ((myaddr[i] >> 4) & 0xf); | |
3248 | *p++ = tohex (myaddr[i] & 0xf); | |
3249 | } | |
3250 | *p = '\0'; | |
3251 | } | |
3252 | ||
3253 | putpkt_binary (buf, (int) (p - buf)); | |
3254 | getpkt (buf, 0); | |
3255 | ||
3256 | if (buf[0] == 'E') | |
3257 | { | |
3258 | /* There is no correspondance between what the remote protocol uses | |
3259 | for errors and errno codes. We would like a cleaner way of | |
3260 | representing errors (big enough to include errno codes, bfd_error | |
3261 | codes, and others). But for now just return EIO. */ | |
3262 | errno = EIO; | |
3263 | return 0; | |
3264 | } | |
3265 | ||
3266 | /* Increment by i, not by todo, in case escape chars | |
c5aa993b JM |
3267 | caused us to send fewer bytes than we'd planned. */ |
3268 | myaddr += i; | |
c906108c | 3269 | memaddr += i; |
c5aa993b | 3270 | len -= i; |
c906108c SS |
3271 | } |
3272 | return origlen; | |
3273 | } | |
3274 | ||
3275 | /* Read memory data directly from the remote machine. | |
3276 | This does not use the data cache; the data cache uses this. | |
3277 | MEMADDR is the address in the remote memory space. | |
3278 | MYADDR is the address of the buffer in our space. | |
3279 | LEN is the number of bytes. | |
3280 | ||
3281 | Returns number of bytes transferred, or 0 for error. */ | |
3282 | ||
3283 | static int | |
3284 | remote_read_bytes (memaddr, myaddr, len) | |
3285 | CORE_ADDR memaddr; | |
3286 | char *myaddr; | |
3287 | int len; | |
3288 | { | |
085dd6e6 | 3289 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3290 | int max_buf_size; /* Max size of packet output buffer */ |
3291 | int origlen; | |
3292 | ||
3293 | /* Chop the transfer down if necessary */ | |
3294 | ||
3295 | max_buf_size = min (remote_write_size, PBUFSIZ); | |
3296 | if (remote_register_buf_size != 0) | |
3297 | max_buf_size = min (max_buf_size, remote_register_buf_size); | |
3298 | ||
3299 | origlen = len; | |
3300 | while (len > 0) | |
3301 | { | |
c906108c SS |
3302 | char *p; |
3303 | int todo; | |
3304 | int i; | |
3305 | ||
c5aa993b | 3306 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3307 | |
3308 | /* construct "m"<memaddr>","<len>" */ | |
3309 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3310 | memaddr = remote_address_masked (memaddr); | |
3311 | p = buf; | |
3312 | *p++ = 'm'; | |
3313 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3314 | *p++ = ','; | |
3315 | p += hexnumstr (p, (ULONGEST) todo); | |
3316 | *p = '\0'; | |
3317 | ||
3318 | putpkt (buf); | |
3319 | getpkt (buf, 0); | |
3320 | ||
3321 | if (buf[0] == 'E') | |
3322 | { | |
3323 | /* There is no correspondance between what the remote protocol uses | |
3324 | for errors and errno codes. We would like a cleaner way of | |
3325 | representing errors (big enough to include errno codes, bfd_error | |
3326 | codes, and others). But for now just return EIO. */ | |
3327 | errno = EIO; | |
3328 | return 0; | |
3329 | } | |
3330 | ||
c5aa993b JM |
3331 | /* Reply describes memory byte by byte, |
3332 | each byte encoded as two hex characters. */ | |
c906108c SS |
3333 | |
3334 | p = buf; | |
3335 | for (i = 0; i < todo; i++) | |
3336 | { | |
3337 | if (p[0] == 0 || p[1] == 0) | |
3338 | /* Reply is short. This means that we were able to read | |
3339 | only part of what we wanted to. */ | |
3340 | return i + (origlen - len); | |
3341 | myaddr[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3342 | p += 2; | |
3343 | } | |
3344 | myaddr += todo; | |
3345 | memaddr += todo; | |
3346 | len -= todo; | |
3347 | } | |
3348 | return origlen; | |
3349 | } | |
3350 | \f | |
3351 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
392a587b JM |
3352 | transferring to or from debugger address BUFFER. Write to inferior if |
3353 | SHOULD_WRITE is nonzero. Returns length of data written or read; 0 | |
3354 | for error. */ | |
3355 | ||
3356 | #ifndef REMOTE_TRANSLATE_XFER_ADDRESS | |
3357 | #define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \ | |
3358 | (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN)) | |
3359 | #endif | |
c906108c SS |
3360 | |
3361 | /* ARGSUSED */ | |
3362 | static int | |
392a587b JM |
3363 | remote_xfer_memory (mem_addr, buffer, mem_len, should_write, target) |
3364 | CORE_ADDR mem_addr; | |
3365 | char *buffer; | |
3366 | int mem_len; | |
c906108c | 3367 | int should_write; |
c5aa993b | 3368 | struct target_ops *target; /* ignored */ |
c906108c | 3369 | { |
392a587b JM |
3370 | CORE_ADDR targ_addr; |
3371 | int targ_len; | |
3372 | REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr, mem_len, &targ_addr, &targ_len); | |
3373 | if (targ_len <= 0) | |
c906108c | 3374 | return 0; |
c906108c | 3375 | |
392a587b JM |
3376 | return dcache_xfer_memory (remote_dcache, targ_addr, buffer, |
3377 | targ_len, should_write); | |
c906108c SS |
3378 | } |
3379 | ||
c5aa993b | 3380 | |
c906108c SS |
3381 | #if 0 |
3382 | /* Enable after 4.12. */ | |
3383 | ||
3384 | void | |
3385 | remote_search (len, data, mask, startaddr, increment, lorange, hirange | |
3386 | addr_found, data_found) | |
3387 | int len; | |
3388 | char *data; | |
3389 | char *mask; | |
3390 | CORE_ADDR startaddr; | |
3391 | int increment; | |
3392 | CORE_ADDR lorange; | |
3393 | CORE_ADDR hirange; | |
3394 | CORE_ADDR *addr_found; | |
3395 | char *data_found; | |
3396 | { | |
3397 | if (increment == -4 && len == 4) | |
3398 | { | |
3399 | long mask_long, data_long; | |
3400 | long data_found_long; | |
3401 | CORE_ADDR addr_we_found; | |
085dd6e6 | 3402 | char *buf = alloca (PBUFSIZ); |
c906108c SS |
3403 | long returned_long[2]; |
3404 | char *p; | |
3405 | ||
3406 | mask_long = extract_unsigned_integer (mask, len); | |
3407 | data_long = extract_unsigned_integer (data, len); | |
3408 | sprintf (buf, "t%x:%x,%x", startaddr, data_long, mask_long); | |
3409 | putpkt (buf); | |
3410 | getpkt (buf, 0); | |
3411 | if (buf[0] == '\0') | |
3412 | { | |
3413 | /* The stub doesn't support the 't' request. We might want to | |
3414 | remember this fact, but on the other hand the stub could be | |
3415 | switched on us. Maybe we should remember it only until | |
3416 | the next "target remote". */ | |
3417 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3418 | hirange, addr_found, data_found); | |
3419 | return; | |
3420 | } | |
3421 | ||
3422 | if (buf[0] == 'E') | |
3423 | /* There is no correspondance between what the remote protocol uses | |
3424 | for errors and errno codes. We would like a cleaner way of | |
3425 | representing errors (big enough to include errno codes, bfd_error | |
3426 | codes, and others). But for now just use EIO. */ | |
3427 | memory_error (EIO, startaddr); | |
3428 | p = buf; | |
3429 | addr_we_found = 0; | |
3430 | while (*p != '\0' && *p != ',') | |
3431 | addr_we_found = (addr_we_found << 4) + fromhex (*p++); | |
3432 | if (*p == '\0') | |
3433 | error ("Protocol error: short return for search"); | |
3434 | ||
3435 | data_found_long = 0; | |
3436 | while (*p != '\0' && *p != ',') | |
3437 | data_found_long = (data_found_long << 4) + fromhex (*p++); | |
3438 | /* Ignore anything after this comma, for future extensions. */ | |
3439 | ||
3440 | if (addr_we_found < lorange || addr_we_found >= hirange) | |
3441 | { | |
3442 | *addr_found = 0; | |
3443 | return; | |
3444 | } | |
3445 | ||
3446 | *addr_found = addr_we_found; | |
3447 | *data_found = store_unsigned_integer (data_we_found, len); | |
3448 | return; | |
3449 | } | |
3450 | generic_search (len, data, mask, startaddr, increment, lorange, | |
3451 | hirange, addr_found, data_found); | |
3452 | } | |
3453 | #endif /* 0 */ | |
3454 | \f | |
3455 | static void | |
3456 | remote_files_info (ignore) | |
3457 | struct target_ops *ignore; | |
3458 | { | |
3459 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3460 | } | |
3461 | \f | |
3462 | /* Stuff for dealing with the packets which are part of this protocol. | |
3463 | See comment at top of file for details. */ | |
3464 | ||
3465 | /* Read a single character from the remote end, masking it down to 7 bits. */ | |
3466 | ||
3467 | static int | |
3468 | readchar (timeout) | |
3469 | int timeout; | |
3470 | { | |
3471 | int ch; | |
3472 | ||
3473 | ch = SERIAL_READCHAR (remote_desc, timeout); | |
3474 | ||
3475 | switch (ch) | |
3476 | { | |
3477 | case SERIAL_EOF: | |
3478 | error ("Remote connection closed"); | |
3479 | case SERIAL_ERROR: | |
3480 | perror_with_name ("Remote communication error"); | |
3481 | case SERIAL_TIMEOUT: | |
3482 | return ch; | |
3483 | default: | |
3484 | return ch & 0x7f; | |
3485 | } | |
3486 | } | |
3487 | ||
3488 | /* Send the command in BUF to the remote machine, and read the reply | |
3489 | into BUF. Report an error if we get an error reply. */ | |
3490 | ||
3491 | static void | |
3492 | remote_send (buf) | |
3493 | char *buf; | |
3494 | { | |
3495 | putpkt (buf); | |
3496 | getpkt (buf, 0); | |
3497 | ||
3498 | if (buf[0] == 'E') | |
3499 | error ("Remote failure reply: %s", buf); | |
3500 | } | |
3501 | ||
3502 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3503 | string notation. */ | |
3504 | ||
3505 | static void | |
3506 | print_packet (buf) | |
3507 | char *buf; | |
3508 | { | |
3509 | puts_filtered ("\""); | |
43e526b9 | 3510 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3511 | puts_filtered ("\""); |
3512 | } | |
3513 | ||
3514 | int | |
3515 | putpkt (buf) | |
3516 | char *buf; | |
3517 | { | |
3518 | return putpkt_binary (buf, strlen (buf)); | |
3519 | } | |
3520 | ||
3521 | /* Send a packet to the remote machine, with error checking. The data | |
3522 | of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5 | |
3523 | to account for the $, # and checksum, and for a possible /0 if we are | |
3524 | debugging (remote_debug) and want to print the sent packet as a string */ | |
3525 | ||
3526 | static int | |
3527 | putpkt_binary (buf, cnt) | |
3528 | char *buf; | |
3529 | int cnt; | |
3530 | { | |
3531 | int i; | |
3532 | unsigned char csum = 0; | |
085dd6e6 JM |
3533 | char *buf2 = alloca (PBUFSIZ); |
3534 | char *junkbuf = alloca (PBUFSIZ); | |
3535 | ||
c906108c SS |
3536 | int ch; |
3537 | int tcount = 0; | |
3538 | char *p; | |
3539 | ||
3540 | /* Copy the packet into buffer BUF2, encapsulating it | |
3541 | and giving it a checksum. */ | |
3542 | ||
43ff13b4 | 3543 | if (cnt > BUFSIZ - 5) /* Prosanity check */ |
c906108c SS |
3544 | abort (); |
3545 | ||
3546 | p = buf2; | |
3547 | *p++ = '$'; | |
3548 | ||
3549 | for (i = 0; i < cnt; i++) | |
3550 | { | |
3551 | csum += buf[i]; | |
3552 | *p++ = buf[i]; | |
3553 | } | |
3554 | *p++ = '#'; | |
3555 | *p++ = tohex ((csum >> 4) & 0xf); | |
3556 | *p++ = tohex (csum & 0xf); | |
3557 | ||
3558 | /* Send it over and over until we get a positive ack. */ | |
3559 | ||
3560 | while (1) | |
3561 | { | |
3562 | int started_error_output = 0; | |
3563 | ||
3564 | if (remote_debug) | |
3565 | { | |
3566 | *p = '\0'; | |
43e526b9 JM |
3567 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3568 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
3569 | fprintf_unfiltered (gdb_stdlog, "...", buf2); | |
0f71a2f6 | 3570 | gdb_flush (gdb_stdlog); |
c906108c SS |
3571 | } |
3572 | if (SERIAL_WRITE (remote_desc, buf2, p - buf2)) | |
3573 | perror_with_name ("putpkt: write failed"); | |
3574 | ||
3575 | /* read until either a timeout occurs (-2) or '+' is read */ | |
3576 | while (1) | |
3577 | { | |
3578 | ch = readchar (remote_timeout); | |
3579 | ||
c5aa993b | 3580 | if (remote_debug) |
c906108c SS |
3581 | { |
3582 | switch (ch) | |
3583 | { | |
3584 | case '+': | |
3585 | case SERIAL_TIMEOUT: | |
3586 | case '$': | |
3587 | if (started_error_output) | |
3588 | { | |
3589 | putchar_unfiltered ('\n'); | |
3590 | started_error_output = 0; | |
3591 | } | |
3592 | } | |
3593 | } | |
3594 | ||
3595 | switch (ch) | |
3596 | { | |
3597 | case '+': | |
3598 | if (remote_debug) | |
0f71a2f6 | 3599 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c SS |
3600 | return 1; |
3601 | case SERIAL_TIMEOUT: | |
c5aa993b | 3602 | tcount++; |
c906108c SS |
3603 | if (tcount > 3) |
3604 | return 0; | |
3605 | break; /* Retransmit buffer */ | |
3606 | case '$': | |
3607 | { | |
c5aa993b JM |
3608 | /* It's probably an old response, and we're out of sync. |
3609 | Just gobble up the packet and ignore it. */ | |
c906108c | 3610 | getpkt (junkbuf, 0); |
c5aa993b | 3611 | continue; /* Now, go look for + */ |
c906108c SS |
3612 | } |
3613 | default: | |
3614 | if (remote_debug) | |
3615 | { | |
3616 | if (!started_error_output) | |
3617 | { | |
3618 | started_error_output = 1; | |
0f71a2f6 | 3619 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3620 | } |
0f71a2f6 | 3621 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3622 | } |
3623 | continue; | |
3624 | } | |
3625 | break; /* Here to retransmit */ | |
3626 | } | |
3627 | ||
3628 | #if 0 | |
3629 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3630 | able to get out next time we call QUIT, without anything as |
3631 | violent as interrupt_query. If we want to provide a way out of | |
3632 | here without getting to the next QUIT, it should be based on | |
3633 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3634 | if (quit_flag) |
3635 | { | |
3636 | quit_flag = 0; | |
3637 | interrupt_query (); | |
3638 | } | |
3639 | #endif | |
3640 | } | |
3641 | } | |
3642 | ||
0f71a2f6 JM |
3643 | static int remote_cisco_mode; |
3644 | ||
c5aa993b JM |
3645 | static void |
3646 | remote_cisco_expand (src, dest) | |
0f71a2f6 JM |
3647 | char *src; |
3648 | char *dest; | |
3649 | { | |
3650 | int i; | |
3651 | int repeat; | |
3652 | ||
c5aa993b JM |
3653 | do |
3654 | { | |
3655 | if (*src == '*') | |
3656 | { | |
3657 | repeat = (fromhex (src[1]) << 4) + fromhex (src[2]); | |
3658 | for (i = 0; i < repeat; i++) | |
3659 | { | |
3660 | *dest++ = *(src - 1); | |
3661 | } | |
3662 | src += 2; | |
3663 | } | |
3664 | else | |
3665 | { | |
3666 | *dest++ = *src; | |
3667 | } | |
3668 | } | |
3669 | while (*src++); | |
0f71a2f6 JM |
3670 | } |
3671 | ||
c906108c SS |
3672 | /* Come here after finding the start of the frame. Collect the rest |
3673 | into BUF, verifying the checksum, length, and handling run-length | |
3674 | compression. Returns 0 on any error, 1 on success. */ | |
3675 | ||
3676 | static int | |
3677 | read_frame (buf) | |
3678 | char *buf; | |
3679 | { | |
3680 | unsigned char csum; | |
3681 | char *bp; | |
3682 | int c; | |
3683 | ||
3684 | csum = 0; | |
3685 | bp = buf; | |
3686 | ||
3687 | while (1) | |
3688 | { | |
3689 | c = readchar (remote_timeout); | |
3690 | ||
3691 | switch (c) | |
3692 | { | |
3693 | case SERIAL_TIMEOUT: | |
3694 | if (remote_debug) | |
0f71a2f6 | 3695 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c906108c SS |
3696 | return 0; |
3697 | case '$': | |
3698 | if (remote_debug) | |
0f71a2f6 JM |
3699 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3700 | gdb_stdlog); | |
c906108c SS |
3701 | return 0; /* Start a new packet, count retries */ |
3702 | case '#': | |
3703 | { | |
3704 | unsigned char pktcsum; | |
3705 | ||
3706 | *bp = '\000'; | |
3707 | ||
3708 | pktcsum = fromhex (readchar (remote_timeout)) << 4; | |
3709 | pktcsum |= fromhex (readchar (remote_timeout)); | |
3710 | ||
3711 | if (csum == pktcsum) | |
0f71a2f6 JM |
3712 | { |
3713 | if (remote_cisco_mode) /* variant run-length-encoding */ | |
3714 | { | |
085dd6e6 | 3715 | char *tmp_buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
3716 | |
3717 | remote_cisco_expand (buf, tmp_buf); | |
3718 | strcpy (buf, tmp_buf); | |
3719 | } | |
3720 | return 1; | |
3721 | } | |
c906108c | 3722 | |
c5aa993b | 3723 | if (remote_debug) |
c906108c | 3724 | { |
0f71a2f6 | 3725 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3726 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3727 | pktcsum, csum); |
3728 | fputs_filtered (buf, gdb_stdlog); | |
3729 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c SS |
3730 | } |
3731 | return 0; | |
3732 | } | |
3733 | case '*': /* Run length encoding */ | |
0f71a2f6 | 3734 | if (remote_cisco_mode == 0) /* variant run-length-encoding */ |
c906108c | 3735 | { |
0f71a2f6 JM |
3736 | csum += c; |
3737 | c = readchar (remote_timeout); | |
3738 | csum += c; | |
3739 | c = c - ' ' + 3; /* Compute repeat count */ | |
c906108c | 3740 | |
0f71a2f6 JM |
3741 | if (c > 0 && c < 255 && bp + c - 1 < buf + PBUFSIZ - 1) |
3742 | { | |
3743 | memset (bp, *(bp - 1), c); | |
3744 | bp += c; | |
3745 | continue; | |
3746 | } | |
c906108c | 3747 | |
0f71a2f6 JM |
3748 | *bp = '\0'; |
3749 | printf_filtered ("Repeat count %d too large for buffer: ", c); | |
3750 | puts_filtered (buf); | |
3751 | puts_filtered ("\n"); | |
3752 | return 0; | |
3753 | } | |
3754 | /* else fall thru to treat like default */ | |
c906108c SS |
3755 | default: |
3756 | if (bp < buf + PBUFSIZ - 1) | |
3757 | { | |
3758 | *bp++ = c; | |
3759 | csum += c; | |
3760 | continue; | |
3761 | } | |
3762 | ||
3763 | *bp = '\0'; | |
3764 | puts_filtered ("Remote packet too long: "); | |
3765 | puts_filtered (buf); | |
3766 | puts_filtered ("\n"); | |
3767 | ||
3768 | return 0; | |
3769 | } | |
3770 | } | |
3771 | } | |
3772 | ||
3773 | /* Read a packet from the remote machine, with error checking, and | |
3774 | store it in BUF. BUF is expected to be of size PBUFSIZ. If | |
3775 | FOREVER, wait forever rather than timing out; this is used while | |
3776 | the target is executing user code. */ | |
3777 | ||
3778 | void | |
3779 | getpkt (buf, forever) | |
3780 | char *buf; | |
3781 | int forever; | |
3782 | { | |
3783 | int c; | |
3784 | int tries; | |
3785 | int timeout; | |
3786 | int val; | |
3787 | ||
c5aa993b | 3788 | strcpy (buf, "timeout"); |
c906108c SS |
3789 | |
3790 | if (forever) | |
3791 | { | |
c906108c | 3792 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
3793 | } |
3794 | ||
3795 | else | |
3796 | timeout = remote_timeout; | |
3797 | ||
3798 | #define MAX_TRIES 3 | |
3799 | ||
3800 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
3801 | { | |
3802 | /* This can loop forever if the remote side sends us characters | |
c5aa993b JM |
3803 | continuously, but if it pauses, we'll get a zero from readchar |
3804 | because of timeout. Then we'll count that as a retry. */ | |
c906108c SS |
3805 | |
3806 | /* Note that we will only wait forever prior to the start of a packet. | |
c5aa993b JM |
3807 | After that, we expect characters to arrive at a brisk pace. They |
3808 | should show up within remote_timeout intervals. */ | |
c906108c SS |
3809 | |
3810 | do | |
3811 | { | |
3812 | c = readchar (timeout); | |
3813 | ||
3814 | if (c == SERIAL_TIMEOUT) | |
3815 | { | |
c906108c SS |
3816 | if (forever) /* Watchdog went off. Kill the target. */ |
3817 | { | |
3818 | target_mourn_inferior (); | |
3819 | error ("Watchdog has expired. Target detached.\n"); | |
3820 | } | |
c906108c | 3821 | if (remote_debug) |
0f71a2f6 | 3822 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
3823 | goto retry; |
3824 | } | |
3825 | } | |
3826 | while (c != '$'); | |
3827 | ||
3828 | /* We've found the start of a packet, now collect the data. */ | |
3829 | ||
3830 | val = read_frame (buf); | |
3831 | ||
3832 | if (val == 1) | |
3833 | { | |
3834 | if (remote_debug) | |
43e526b9 JM |
3835 | { |
3836 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
3837 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
3838 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
3839 | } | |
c906108c SS |
3840 | SERIAL_WRITE (remote_desc, "+", 1); |
3841 | return; | |
3842 | } | |
3843 | ||
3844 | /* Try the whole thing again. */ | |
3845 | retry: | |
3846 | SERIAL_WRITE (remote_desc, "-", 1); | |
3847 | } | |
3848 | ||
3849 | /* We have tried hard enough, and just can't receive the packet. Give up. */ | |
3850 | ||
3851 | printf_unfiltered ("Ignoring packet error, continuing...\n"); | |
3852 | SERIAL_WRITE (remote_desc, "+", 1); | |
3853 | } | |
3854 | \f | |
3855 | static void | |
3856 | remote_kill () | |
3857 | { | |
3858 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
3859 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
3860 | if (kill_kludge) | |
3861 | { | |
3862 | kill_kludge = 0; | |
3863 | target_mourn_inferior (); | |
3864 | return; | |
3865 | } | |
3866 | ||
3867 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
3868 | speaking terms with the remote system. */ | |
c5aa993b | 3869 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
3870 | |
3871 | /* Don't wait for it to die. I'm not really sure it matters whether | |
3872 | we do or not. For the existing stubs, kill is a noop. */ | |
3873 | target_mourn_inferior (); | |
3874 | } | |
3875 | ||
43ff13b4 JM |
3876 | /* Async version of remote_kill. */ |
3877 | static void | |
3878 | remote_async_kill () | |
3879 | { | |
3880 | /* Unregister the file descriptor from the event loop. */ | |
3881 | if (async_p) | |
3882 | delete_file_handler (remote_desc->fd); | |
3883 | ||
3884 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
3885 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
3886 | if (kill_kludge) | |
3887 | { | |
3888 | kill_kludge = 0; | |
3889 | target_mourn_inferior (); | |
3890 | return; | |
3891 | } | |
3892 | ||
3893 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
3894 | speaking terms with the remote system. */ | |
c5aa993b | 3895 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
3896 | |
3897 | /* Don't wait for it to die. I'm not really sure it matters whether | |
3898 | we do or not. For the existing stubs, kill is a noop. */ | |
3899 | target_mourn_inferior (); | |
3900 | } | |
3901 | ||
c906108c SS |
3902 | static void |
3903 | remote_mourn () | |
3904 | { | |
3905 | remote_mourn_1 (&remote_ops); | |
3906 | } | |
3907 | ||
3908 | static void | |
3909 | extended_remote_mourn () | |
3910 | { | |
3911 | /* We do _not_ want to mourn the target like this; this will | |
3912 | remove the extended remote target from the target stack, | |
3913 | and the next time the user says "run" it'll fail. | |
3914 | ||
3915 | FIXME: What is the right thing to do here? */ | |
3916 | #if 0 | |
3917 | remote_mourn_1 (&extended_remote_ops); | |
3918 | #endif | |
3919 | } | |
3920 | ||
3921 | /* Worker function for remote_mourn. */ | |
3922 | static void | |
3923 | remote_mourn_1 (target) | |
3924 | struct target_ops *target; | |
3925 | { | |
3926 | unpush_target (target); | |
3927 | generic_mourn_inferior (); | |
3928 | } | |
3929 | ||
3930 | /* In the extended protocol we want to be able to do things like | |
3931 | "run" and have them basically work as expected. So we need | |
3932 | a special create_inferior function. | |
3933 | ||
3934 | FIXME: One day add support for changing the exec file | |
3935 | we're debugging, arguments and an environment. */ | |
3936 | ||
3937 | static void | |
3938 | extended_remote_create_inferior (exec_file, args, env) | |
3939 | char *exec_file; | |
3940 | char *args; | |
3941 | char **env; | |
3942 | { | |
3943 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
3944 | the remote server. */ | |
3945 | remove_breakpoints (); | |
3946 | ||
3947 | /* Now restart the remote server. */ | |
3948 | extended_remote_restart (); | |
3949 | ||
3950 | /* Now put the breakpoints back in. This way we're safe if the | |
3951 | restart function works via a unix fork on the remote side. */ | |
3952 | insert_breakpoints (); | |
3953 | ||
3954 | /* Clean up from the last time we were running. */ | |
3955 | clear_proceed_status (); | |
3956 | ||
3957 | /* Let the remote process run. */ | |
3958 | proceed (-1, TARGET_SIGNAL_0, 0); | |
3959 | } | |
3960 | ||
43ff13b4 JM |
3961 | /* Async version of extended_remote_create_inferior. */ |
3962 | static void | |
3963 | extended_remote_async_create_inferior (exec_file, args, env) | |
3964 | char *exec_file; | |
3965 | char *args; | |
3966 | char **env; | |
3967 | { | |
3968 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
3969 | the remote server. */ | |
3970 | remove_breakpoints (); | |
3971 | ||
3972 | /* If running asynchronously, register the target file descriptor | |
3973 | with the event loop. */ | |
3974 | if (async_p) | |
3975 | add_file_handler (remote_desc->fd, (file_handler_func *) fetch_inferior_event, 0); | |
3976 | ||
3977 | /* Now restart the remote server. */ | |
3978 | extended_remote_restart (); | |
3979 | ||
3980 | /* Now put the breakpoints back in. This way we're safe if the | |
3981 | restart function works via a unix fork on the remote side. */ | |
3982 | insert_breakpoints (); | |
3983 | ||
3984 | /* Clean up from the last time we were running. */ | |
3985 | clear_proceed_status (); | |
3986 | ||
3987 | /* Let the remote process run. */ | |
3988 | proceed (-1, TARGET_SIGNAL_0, 0); | |
3989 | } | |
c906108c | 3990 | \f |
c5aa993b | 3991 | |
c906108c SS |
3992 | /* On some machines, e.g. 68k, we may use a different breakpoint instruction |
3993 | than other targets; in those use REMOTE_BREAKPOINT instead of just | |
3994 | BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT | |
3995 | and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call | |
3996 | the standard routines that are in mem-break.c. */ | |
3997 | ||
3998 | /* FIXME, these ought to be done in a more dynamic fashion. For instance, | |
3999 | the choice of breakpoint instruction affects target program design and | |
4000 | vice versa, and by making it user-tweakable, the special code here | |
4001 | goes away and we need fewer special GDB configurations. */ | |
4002 | ||
4003 | #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT) | |
4004 | #define REMOTE_BREAKPOINT | |
4005 | #endif | |
4006 | ||
4007 | #ifdef REMOTE_BREAKPOINT | |
4008 | ||
4009 | /* If the target isn't bi-endian, just pretend it is. */ | |
4010 | #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT) | |
4011 | #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4012 | #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT | |
4013 | #endif | |
4014 | ||
4015 | static unsigned char big_break_insn[] = BIG_REMOTE_BREAKPOINT; | |
4016 | static unsigned char little_break_insn[] = LITTLE_REMOTE_BREAKPOINT; | |
4017 | ||
4018 | #endif /* REMOTE_BREAKPOINT */ | |
4019 | ||
4020 | /* Insert a breakpoint on targets that don't have any better breakpoint | |
4021 | support. We read the contents of the target location and stash it, | |
4022 | then overwrite it with a breakpoint instruction. ADDR is the target | |
4023 | location in the target machine. CONTENTS_CACHE is a pointer to | |
4024 | memory allocated for saving the target contents. It is guaranteed | |
4025 | by the caller to be long enough to save sizeof BREAKPOINT bytes (this | |
4026 | is accomplished via BREAKPOINT_MAX). */ | |
4027 | ||
4028 | static int | |
4029 | remote_insert_breakpoint (addr, contents_cache) | |
4030 | CORE_ADDR addr; | |
4031 | char *contents_cache; | |
4032 | { | |
4033 | #ifdef REMOTE_BREAKPOINT | |
4034 | int val; | |
4035 | ||
4036 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); | |
4037 | ||
4038 | if (val == 0) | |
4039 | { | |
4040 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
4041 | val = target_write_memory (addr, (char *) big_break_insn, | |
4042 | sizeof big_break_insn); | |
4043 | else | |
4044 | val = target_write_memory (addr, (char *) little_break_insn, | |
4045 | sizeof little_break_insn); | |
4046 | } | |
4047 | ||
4048 | return val; | |
4049 | #else | |
4050 | return memory_insert_breakpoint (addr, contents_cache); | |
4051 | #endif /* REMOTE_BREAKPOINT */ | |
4052 | } | |
4053 | ||
4054 | static int | |
4055 | remote_remove_breakpoint (addr, contents_cache) | |
4056 | CORE_ADDR addr; | |
4057 | char *contents_cache; | |
4058 | { | |
4059 | #ifdef REMOTE_BREAKPOINT | |
4060 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); | |
4061 | #else | |
4062 | return memory_remove_breakpoint (addr, contents_cache); | |
4063 | #endif /* REMOTE_BREAKPOINT */ | |
4064 | } | |
4065 | ||
4066 | /* Some targets are only capable of doing downloads, and afterwards | |
4067 | they switch to the remote serial protocol. This function provides | |
4068 | a clean way to get from the download target to the remote target. | |
4069 | It's basically just a wrapper so that we don't have to expose any | |
4070 | of the internal workings of remote.c. | |
4071 | ||
4072 | Prior to calling this routine, you should shutdown the current | |
4073 | target code, else you will get the "A program is being debugged | |
4074 | already..." message. Usually a call to pop_target() suffices. */ | |
4075 | ||
4076 | void | |
4077 | push_remote_target (name, from_tty) | |
4078 | char *name; | |
4079 | int from_tty; | |
4080 | { | |
4081 | printf_filtered ("Switching to remote protocol\n"); | |
4082 | remote_open (name, from_tty); | |
4083 | } | |
4084 | ||
4085 | /* Other targets want to use the entire remote serial module but with | |
4086 | certain remote_ops overridden. */ | |
4087 | ||
4088 | void | |
4089 | open_remote_target (name, from_tty, target, extended_p) | |
4090 | char *name; | |
4091 | int from_tty; | |
4092 | struct target_ops *target; | |
4093 | int extended_p; | |
4094 | { | |
4095 | printf_filtered ("Selecting the %sremote protocol\n", | |
4096 | (extended_p ? "extended-" : "")); | |
4097 | remote_open_1 (name, from_tty, target, extended_p); | |
4098 | } | |
4099 | ||
4100 | /* Table used by the crc32 function to calcuate the checksum. */ | |
4101 | ||
c5aa993b JM |
4102 | static unsigned long crc32_table[256] = |
4103 | {0, 0}; | |
c906108c SS |
4104 | |
4105 | static unsigned long | |
4106 | crc32 (buf, len, crc) | |
4107 | unsigned char *buf; | |
4108 | int len; | |
4109 | unsigned int crc; | |
4110 | { | |
c5aa993b | 4111 | if (!crc32_table[1]) |
c906108c SS |
4112 | { |
4113 | /* Initialize the CRC table and the decoding table. */ | |
4114 | int i, j; | |
4115 | unsigned int c; | |
4116 | ||
4117 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4118 | { |
4119 | for (c = i << 24, j = 8; j > 0; --j) | |
4120 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4121 | crc32_table[i] = c; | |
4122 | } | |
c906108c SS |
4123 | } |
4124 | ||
4125 | while (len--) | |
4126 | { | |
4127 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4128 | buf++; | |
4129 | } | |
4130 | return crc; | |
4131 | } | |
4132 | ||
4133 | /* compare-sections command | |
4134 | ||
4135 | With no arguments, compares each loadable section in the exec bfd | |
4136 | with the same memory range on the target, and reports mismatches. | |
4137 | Useful for verifying the image on the target against the exec file. | |
4138 | Depends on the target understanding the new "qCRC:" request. */ | |
4139 | ||
4140 | static void | |
4141 | compare_sections_command (args, from_tty) | |
4142 | char *args; | |
4143 | int from_tty; | |
4144 | { | |
4145 | asection *s; | |
4146 | unsigned long host_crc, target_crc; | |
4147 | extern bfd *exec_bfd; | |
4148 | struct cleanup *old_chain; | |
085dd6e6 JM |
4149 | char *tmp; |
4150 | char *sectdata; | |
4151 | char *sectname; | |
4152 | char *buf = alloca (PBUFSIZ); | |
c906108c SS |
4153 | bfd_size_type size; |
4154 | bfd_vma lma; | |
4155 | int matched = 0; | |
4156 | int mismatched = 0; | |
4157 | ||
4158 | if (!exec_bfd) | |
4159 | error ("command cannot be used without an exec file"); | |
4160 | if (!current_target.to_shortname || | |
4161 | strcmp (current_target.to_shortname, "remote") != 0) | |
4162 | error ("command can only be used with remote target"); | |
4163 | ||
c5aa993b | 4164 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4165 | { |
4166 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4167 | continue; /* skip non-loadable section */ |
c906108c SS |
4168 | |
4169 | size = bfd_get_section_size_before_reloc (s); | |
4170 | if (size == 0) | |
c5aa993b | 4171 | continue; /* skip zero-length section */ |
c906108c SS |
4172 | |
4173 | sectname = (char *) bfd_get_section_name (exec_bfd, s); | |
4174 | if (args && strcmp (args, sectname) != 0) | |
c5aa993b | 4175 | continue; /* not the section selected by user */ |
c906108c | 4176 | |
c5aa993b | 4177 | matched = 1; /* do this section */ |
c906108c SS |
4178 | lma = s->lma; |
4179 | /* FIXME: assumes lma can fit into long */ | |
4180 | sprintf (buf, "qCRC:%lx,%lx", (long) lma, (long) size); | |
4181 | putpkt (buf); | |
4182 | ||
4183 | /* be clever; compute the host_crc before waiting for target reply */ | |
4184 | sectdata = xmalloc (size); | |
4185 | old_chain = make_cleanup (free, sectdata); | |
4186 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); | |
4187 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4188 | ||
4189 | getpkt (buf, 0); | |
4190 | if (buf[0] == 'E') | |
4191 | error ("target memory fault, section %s, range 0x%08x -- 0x%08x", | |
4192 | sectname, lma, lma + size); | |
4193 | if (buf[0] != 'C') | |
4194 | error ("remote target does not support this operation"); | |
4195 | ||
4196 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4197 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4198 | ||
4199 | printf_filtered ("Section %s, range 0x%08x -- 0x%08x: ", | |
4200 | sectname, lma, lma + size); | |
4201 | if (host_crc == target_crc) | |
4202 | printf_filtered ("matched.\n"); | |
4203 | else | |
c5aa993b JM |
4204 | { |
4205 | printf_filtered ("MIS-MATCHED!\n"); | |
4206 | mismatched++; | |
4207 | } | |
c906108c SS |
4208 | |
4209 | do_cleanups (old_chain); | |
4210 | } | |
4211 | if (mismatched > 0) | |
4212 | warning ("One or more sections of the remote executable does not match\n\ | |
4213 | the loaded file\n"); | |
4214 | if (args && !matched) | |
4215 | printf_filtered ("No loaded section named '%s'.\n", args); | |
4216 | } | |
4217 | ||
4218 | static int | |
4219 | remote_query (query_type, buf, outbuf, bufsiz) | |
4220 | int query_type; | |
4221 | char *buf; | |
4222 | char *outbuf; | |
4223 | int *bufsiz; | |
4224 | { | |
4225 | int i; | |
085dd6e6 | 4226 | char *buf2 = alloca (PBUFSIZ); |
c906108c SS |
4227 | char *p2 = &buf2[0]; |
4228 | char *p = buf; | |
4229 | ||
c5aa993b | 4230 | if (!bufsiz) |
c906108c SS |
4231 | error ("null pointer to remote bufer size specified"); |
4232 | ||
cce74817 | 4233 | /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let |
c906108c SS |
4234 | the caller know and return what the minimum size is */ |
4235 | /* Note: a zero bufsiz can be used to query the minimum buffer size */ | |
c5aa993b | 4236 | if (*bufsiz < PBUFSIZ) |
c906108c SS |
4237 | { |
4238 | *bufsiz = PBUFSIZ; | |
4239 | return -1; | |
4240 | } | |
4241 | ||
4242 | /* except for querying the minimum buffer size, target must be open */ | |
c5aa993b | 4243 | if (!remote_desc) |
c906108c SS |
4244 | error ("remote query is only available after target open"); |
4245 | ||
4246 | /* we only take uppercase letters as query types, at least for now */ | |
c5aa993b | 4247 | if ((query_type < 'A') || (query_type > 'Z')) |
c906108c SS |
4248 | error ("invalid remote query type"); |
4249 | ||
c5aa993b | 4250 | if (!buf) |
c906108c SS |
4251 | error ("null remote query specified"); |
4252 | ||
c5aa993b | 4253 | if (!outbuf) |
c906108c SS |
4254 | error ("remote query requires a buffer to receive data"); |
4255 | ||
4256 | outbuf[0] = '\0'; | |
4257 | ||
4258 | *p2++ = 'q'; | |
4259 | *p2++ = query_type; | |
4260 | ||
4261 | /* we used one buffer char for the remote protocol q command and another | |
4262 | for the query type. As the remote protocol encapsulation uses 4 chars | |
4263 | plus one extra in case we are debugging (remote_debug), | |
4264 | we have PBUFZIZ - 7 left to pack the query string */ | |
4265 | i = 0; | |
c5aa993b | 4266 | while (buf[i] && (i < (PBUFSIZ - 8))) |
c906108c SS |
4267 | { |
4268 | /* bad caller may have sent forbidden characters */ | |
c5aa993b JM |
4269 | if ((!isprint (buf[i])) || (buf[i] == '$') || (buf[i] == '#')) |
4270 | error ("illegal characters in query string"); | |
c906108c SS |
4271 | |
4272 | *p2++ = buf[i]; | |
4273 | i++; | |
4274 | } | |
4275 | *p2 = buf[i]; | |
4276 | ||
c5aa993b | 4277 | if (buf[i]) |
c906108c SS |
4278 | error ("query larger than available buffer"); |
4279 | ||
4280 | i = putpkt (buf2); | |
c5aa993b JM |
4281 | if (i < 0) |
4282 | return i; | |
c906108c SS |
4283 | |
4284 | getpkt (outbuf, 0); | |
4285 | ||
4286 | return 0; | |
4287 | } | |
4288 | ||
4289 | static void | |
4290 | packet_command (args, from_tty) | |
4291 | char *args; | |
4292 | int from_tty; | |
4293 | { | |
085dd6e6 | 4294 | char *buf = alloca (PBUFSIZ); |
c906108c | 4295 | |
c5aa993b | 4296 | if (!remote_desc) |
c906108c SS |
4297 | error ("command can only be used with remote target"); |
4298 | ||
c5aa993b | 4299 | if (!args) |
c906108c SS |
4300 | error ("remote-packet command requires packet text as argument"); |
4301 | ||
4302 | puts_filtered ("sending: "); | |
4303 | print_packet (args); | |
4304 | puts_filtered ("\n"); | |
4305 | putpkt (args); | |
4306 | ||
4307 | getpkt (buf, 0); | |
4308 | puts_filtered ("received: "); | |
4309 | print_packet (buf); | |
4310 | puts_filtered ("\n"); | |
4311 | } | |
4312 | ||
4313 | #if 0 | |
4314 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */ | |
4315 | ||
c5aa993b | 4316 | static void display_thread_info PARAMS ((struct gdb_ext_thread_info * info)); |
c906108c SS |
4317 | |
4318 | static void threadset_test_cmd PARAMS ((char *cmd, int tty)); | |
4319 | ||
4320 | static void threadalive_test PARAMS ((char *cmd, int tty)); | |
4321 | ||
4322 | static void threadlist_test_cmd PARAMS ((char *cmd, int tty)); | |
4323 | ||
c5aa993b | 4324 | int get_and_display_threadinfo PARAMS ((threadref * ref)); |
c906108c SS |
4325 | |
4326 | static void threadinfo_test_cmd PARAMS ((char *cmd, int tty)); | |
4327 | ||
c5aa993b | 4328 | static int thread_display_step PARAMS ((threadref * ref, void *context)); |
c906108c SS |
4329 | |
4330 | static void threadlist_update_test_cmd PARAMS ((char *cmd, int tty)); | |
4331 | ||
4332 | static void init_remote_threadtests PARAMS ((void)); | |
4333 | ||
c5aa993b | 4334 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */ |
c906108c SS |
4335 | |
4336 | static void | |
4337 | threadset_test_cmd (cmd, tty) | |
4338 | char *cmd; | |
4339 | int tty; | |
4340 | { | |
4341 | int sample_thread = SAMPLE_THREAD; | |
4342 | ||
4343 | printf_filtered ("Remote threadset test\n"); | |
4344 | set_thread (sample_thread, 1); | |
4345 | } | |
4346 | ||
4347 | ||
4348 | static void | |
4349 | threadalive_test (cmd, tty) | |
4350 | char *cmd; | |
4351 | int tty; | |
4352 | { | |
4353 | int sample_thread = SAMPLE_THREAD; | |
4354 | ||
4355 | if (remote_thread_alive (sample_thread)) | |
4356 | printf_filtered ("PASS: Thread alive test\n"); | |
4357 | else | |
4358 | printf_filtered ("FAIL: Thread alive test\n"); | |
4359 | } | |
4360 | ||
4361 | void output_threadid PARAMS ((char *title, threadref * ref)); | |
4362 | ||
4363 | void | |
4364 | output_threadid (title, ref) | |
4365 | char *title; | |
4366 | threadref *ref; | |
4367 | { | |
4368 | char hexid[20]; | |
4369 | ||
4370 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex */ | |
4371 | hexid[16] = 0; | |
4372 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
4373 | } | |
4374 | ||
4375 | static void | |
4376 | threadlist_test_cmd (cmd, tty) | |
4377 | char *cmd; | |
4378 | int tty; | |
4379 | { | |
4380 | int startflag = 1; | |
4381 | threadref nextthread; | |
4382 | int done, result_count; | |
4383 | threadref threadlist[3]; | |
4384 | ||
4385 | printf_filtered ("Remote Threadlist test\n"); | |
4386 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
4387 | &result_count, &threadlist[0])) | |
4388 | printf_filtered ("FAIL: threadlist test\n"); | |
4389 | else | |
4390 | { | |
4391 | threadref *scan = threadlist; | |
4392 | threadref *limit = scan + result_count; | |
4393 | ||
4394 | while (scan < limit) | |
4395 | output_threadid (" thread ", scan++); | |
4396 | } | |
4397 | } | |
4398 | ||
4399 | void | |
4400 | display_thread_info (info) | |
4401 | struct gdb_ext_thread_info *info; | |
4402 | { | |
4403 | output_threadid ("Threadid: ", &info->threadid); | |
4404 | printf_filtered ("Name: %s\n ", info->shortname); | |
4405 | printf_filtered ("State: %s\n", info->display); | |
4406 | printf_filtered ("other: %s\n\n", info->more_display); | |
4407 | } | |
4408 | ||
4409 | int | |
4410 | get_and_display_threadinfo (ref) | |
4411 | threadref *ref; | |
4412 | { | |
4413 | int result; | |
4414 | int set; | |
4415 | struct gdb_ext_thread_info threadinfo; | |
4416 | ||
4417 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
4418 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
4419 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
4420 | display_thread_info (&threadinfo); | |
4421 | return result; | |
4422 | } | |
4423 | ||
4424 | static void | |
4425 | threadinfo_test_cmd (cmd, tty) | |
4426 | char *cmd; | |
4427 | int tty; | |
4428 | { | |
4429 | int athread = SAMPLE_THREAD; | |
4430 | threadref thread; | |
4431 | int set; | |
4432 | ||
4433 | int_to_threadref (&thread, athread); | |
4434 | printf_filtered ("Remote Threadinfo test\n"); | |
4435 | if (!get_and_display_threadinfo (&thread)) | |
4436 | printf_filtered ("FAIL cannot get thread info\n"); | |
4437 | } | |
4438 | ||
4439 | static int | |
4440 | thread_display_step (ref, context) | |
4441 | threadref *ref; | |
4442 | void *context; | |
4443 | { | |
4444 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
4445 | return get_and_display_threadinfo (ref); | |
4446 | } | |
4447 | ||
4448 | static void | |
4449 | threadlist_update_test_cmd (cmd, tty) | |
4450 | char *cmd; | |
4451 | int tty; | |
4452 | { | |
4453 | printf_filtered ("Remote Threadlist update test\n"); | |
4454 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
4455 | } | |
4456 | ||
4457 | static void | |
4458 | init_remote_threadtests (void) | |
4459 | { | |
4460 | add_com ("tlist", class_obscure, threadlist_test_cmd, | |
4461 | "Fetch and print the remote list of thread identifiers, one pkt only"); | |
4462 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, | |
4463 | "Fetch and display info about one thread"); | |
4464 | add_com ("tset", class_obscure, threadset_test_cmd, | |
4465 | "Test setting to a different thread"); | |
4466 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, | |
4467 | "Iterate through updating all remote thread info"); | |
4468 | add_com ("talive", class_obscure, threadalive_test, | |
4469 | " Remote thread alive test "); | |
4470 | } | |
4471 | ||
4472 | #endif /* 0 */ | |
4473 | ||
4474 | static void | |
4475 | init_remote_ops () | |
4476 | { | |
c5aa993b | 4477 | remote_ops.to_shortname = "remote"; |
c906108c | 4478 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 4479 | remote_ops.to_doc = |
c906108c | 4480 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
c5aa993b JM |
4481 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
4482 | remote_ops.to_open = remote_open; | |
4483 | remote_ops.to_close = remote_close; | |
c906108c | 4484 | remote_ops.to_detach = remote_detach; |
c5aa993b | 4485 | remote_ops.to_resume = remote_resume; |
c906108c SS |
4486 | remote_ops.to_wait = remote_wait; |
4487 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
4488 | remote_ops.to_store_registers = remote_store_registers; | |
4489 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c5aa993b JM |
4490 | remote_ops.to_xfer_memory = remote_xfer_memory; |
4491 | remote_ops.to_files_info = remote_files_info; | |
c906108c SS |
4492 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4493 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4494 | remote_ops.to_kill = remote_kill; |
4495 | remote_ops.to_load = generic_load; | |
c906108c SS |
4496 | remote_ops.to_mourn_inferior = remote_mourn; |
4497 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 4498 | remote_ops.to_find_new_threads = remote_threads_info; |
c906108c SS |
4499 | remote_ops.to_stop = remote_stop; |
4500 | remote_ops.to_query = remote_query; | |
4501 | remote_ops.to_stratum = process_stratum; | |
c5aa993b JM |
4502 | remote_ops.to_has_all_memory = 1; |
4503 | remote_ops.to_has_memory = 1; | |
4504 | remote_ops.to_has_stack = 1; | |
4505 | remote_ops.to_has_registers = 1; | |
4506 | remote_ops.to_has_execution = 1; | |
4507 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4508 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
4509 | } |
4510 | ||
4511 | /* Set up the extended remote vector by making a copy of the standard | |
4512 | remote vector and adding to it. */ | |
4513 | ||
4514 | static void | |
4515 | init_extended_remote_ops () | |
4516 | { | |
4517 | extended_remote_ops = remote_ops; | |
4518 | ||
0f71a2f6 | 4519 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 4520 | extended_remote_ops.to_longname = |
c906108c | 4521 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 4522 | extended_remote_ops.to_doc = |
c906108c SS |
4523 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4524 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4525 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
4526 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
4527 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
4528 | } |
4529 | ||
4530 | /* | |
4531 | * Command: info remote-process | |
4532 | * | |
4533 | * This implements Cisco's version of the "info proc" command. | |
4534 | * | |
4535 | * This query allows the target stub to return an arbitrary string | |
4536 | * (or strings) giving arbitrary information about the target process. | |
4537 | * This is optional; the target stub isn't required to implement it. | |
4538 | * | |
4539 | * Syntax: qfProcessInfo request first string | |
4540 | * qsProcessInfo request subsequent string | |
4541 | * reply: 'O'<hex-encoded-string> | |
4542 | * 'l' last reply (empty) | |
4543 | */ | |
4544 | ||
4545 | static void | |
4546 | remote_info_process (args, from_tty) | |
4547 | char *args; | |
4548 | int from_tty; | |
4549 | { | |
085dd6e6 | 4550 | char *buf = alloca (PBUFSIZ); |
0f71a2f6 JM |
4551 | |
4552 | if (remote_desc == 0) | |
4553 | error ("Command can only be used when connected to the remote target."); | |
4554 | ||
4555 | putpkt ("qfProcessInfo"); | |
4556 | getpkt (buf, 0); | |
4557 | if (buf[0] == 0) | |
c5aa993b | 4558 | return; /* Silently: target does not support this feature. */ |
0f71a2f6 JM |
4559 | |
4560 | if (buf[0] == 'E') | |
4561 | error ("info proc: target error."); | |
4562 | ||
c5aa993b | 4563 | while (buf[0] == 'O') /* Capitol-O packet */ |
0f71a2f6 JM |
4564 | { |
4565 | remote_console_output (&buf[1]); | |
4566 | putpkt ("qsProcessInfo"); | |
4567 | getpkt (buf, 0); | |
4568 | } | |
4569 | } | |
4570 | ||
4571 | /* | |
4572 | * Target Cisco | |
4573 | */ | |
4574 | ||
4575 | static void | |
4576 | remote_cisco_open (name, from_tty) | |
4577 | char *name; | |
4578 | int from_tty; | |
4579 | { | |
4580 | if (name == 0) | |
4581 | error ( | |
c5aa993b | 4582 | "To open a remote debug connection, you need to specify what \n\ |
0f71a2f6 JM |
4583 | device is attached to the remote system (e.g. host:port)."); |
4584 | ||
4585 | target_preopen (from_tty); | |
4586 | ||
4587 | unpush_target (&remote_cisco_ops); | |
4588 | ||
4589 | remote_dcache = dcache_init (remote_read_bytes, remote_write_bytes); | |
4590 | ||
4591 | remote_desc = SERIAL_OPEN (name); | |
4592 | if (!remote_desc) | |
4593 | perror_with_name (name); | |
4594 | ||
4595 | /* | |
4596 | * If a baud rate was specified on the gdb command line it will | |
4597 | * be greater than the initial value of -1. If it is, use it otherwise | |
4598 | * default to 9600 | |
4599 | */ | |
4600 | ||
4601 | baud_rate = (baud_rate > 0) ? baud_rate : 9600; | |
c5aa993b | 4602 | if (SERIAL_SETBAUDRATE (remote_desc, baud_rate)) |
0f71a2f6 JM |
4603 | { |
4604 | SERIAL_CLOSE (remote_desc); | |
4605 | perror_with_name (name); | |
4606 | } | |
4607 | ||
4608 | SERIAL_RAW (remote_desc); | |
4609 | ||
4610 | /* If there is something sitting in the buffer we might take it as a | |
4611 | response to a command, which would be bad. */ | |
4612 | SERIAL_FLUSH_INPUT (remote_desc); | |
4613 | ||
4614 | if (from_tty) | |
4615 | { | |
4616 | puts_filtered ("Remote debugging using "); | |
4617 | puts_filtered (name); | |
4618 | puts_filtered ("\n"); | |
4619 | } | |
4620 | ||
4621 | remote_cisco_mode = 1; | |
4622 | ||
4623 | push_target (&remote_cisco_ops); /* Switch to using cisco target now */ | |
4624 | ||
5a2468f5 | 4625 | init_packet_config (&remote_protocol_P); |
0f71a2f6 | 4626 | |
c5aa993b | 4627 | general_thread = -2; |
0f71a2f6 JM |
4628 | continue_thread = -2; |
4629 | ||
4630 | /* Force remote_write_bytes to check whether target supports | |
4631 | binary downloading. */ | |
4632 | remote_binary_checked = 0; | |
4633 | ||
4634 | /* Without this, some commands which require an active target (such | |
4635 | as kill) won't work. This variable serves (at least) double duty | |
4636 | as both the pid of the target process (if it has such), and as a | |
4637 | flag indicating that a target is active. These functions should | |
4638 | be split out into seperate variables, especially since GDB will | |
4639 | someday have a notion of debugging several processes. */ | |
4640 | inferior_pid = MAGIC_NULL_PID; | |
4641 | ||
4642 | /* Start the remote connection; if error (0), discard this target. */ | |
4643 | ||
c5aa993b JM |
4644 | if (!catch_errors (remote_start_remote_dummy, (char *) 0, |
4645 | "Couldn't establish connection to remote target\n", | |
0f71a2f6 JM |
4646 | RETURN_MASK_ALL)) |
4647 | { | |
4648 | pop_target (); | |
4649 | return; | |
4650 | } | |
4651 | } | |
4652 | ||
4653 | static void | |
4654 | remote_cisco_close (quitting) | |
4655 | int quitting; | |
4656 | { | |
4657 | remote_cisco_mode = 0; | |
4658 | remote_close (quitting); | |
4659 | } | |
4660 | ||
c5aa993b JM |
4661 | static void |
4662 | remote_cisco_mourn | |
4663 | PARAMS ((void)) | |
0f71a2f6 JM |
4664 | { |
4665 | remote_mourn_1 (&remote_cisco_ops); | |
4666 | } | |
4667 | ||
c5aa993b JM |
4668 | enum |
4669 | { | |
4670 | READ_MORE, | |
4671 | FATAL_ERROR, | |
4672 | ENTER_DEBUG, | |
0f71a2f6 | 4673 | DISCONNECT_TELNET |
c5aa993b JM |
4674 | } |
4675 | minitelnet_return; | |
0f71a2f6 JM |
4676 | |
4677 | /* shared between readsocket() and readtty() */ | |
4678 | static char *tty_input; | |
4679 | ||
4680 | static int escape_count; | |
4681 | static int echo_check; | |
4682 | extern int quit_flag; | |
4683 | ||
4684 | static int | |
4685 | readsocket () | |
4686 | { | |
4687 | int data; | |
4688 | ||
4689 | /* Loop until the socket doesn't have any more data */ | |
4690 | ||
c5aa993b | 4691 | while ((data = readchar (0)) >= 0) |
0f71a2f6 JM |
4692 | { |
4693 | /* Check for the escape sequence */ | |
c5aa993b | 4694 | if (data == '|') |
0f71a2f6 JM |
4695 | { |
4696 | /* If this is the fourth escape, get out */ | |
c5aa993b | 4697 | if (++escape_count == 4) |
0f71a2f6 JM |
4698 | { |
4699 | return ENTER_DEBUG; | |
4700 | } | |
c5aa993b JM |
4701 | else |
4702 | { /* This is a '|', but not the fourth in a row. | |
4703 | Continue without echoing it. If it isn't actually | |
4704 | one of four in a row, it'll be echoed later. */ | |
0f71a2f6 JM |
4705 | continue; |
4706 | } | |
4707 | } | |
c5aa993b JM |
4708 | else |
4709 | /* Not a '|' */ | |
4710 | { | |
0f71a2f6 JM |
4711 | /* Ensure any pending '|'s are flushed. */ |
4712 | ||
c5aa993b JM |
4713 | for (; escape_count > 0; escape_count--) |
4714 | putchar ('|'); | |
0f71a2f6 | 4715 | } |
0f71a2f6 | 4716 | |
c5aa993b JM |
4717 | if (data == '\r') /* If this is a return character, */ |
4718 | continue; /* - just supress it. */ | |
4719 | ||
4720 | if (echo_check != -1) /* Check for echo of user input. */ | |
0f71a2f6 JM |
4721 | { |
4722 | if (tty_input[echo_check] == data) | |
4723 | { | |
c5aa993b JM |
4724 | echo_check++; /* Character matched user input: */ |
4725 | continue; /* Continue without echoing it. */ | |
0f71a2f6 | 4726 | } |
c5aa993b JM |
4727 | else if ((data == '\n') && (tty_input[echo_check] == '\r')) |
4728 | { /* End of the line (and of echo checking). */ | |
4729 | echo_check = -1; /* No more echo supression */ | |
4730 | continue; /* Continue without echoing. */ | |
0f71a2f6 JM |
4731 | } |
4732 | else | |
c5aa993b JM |
4733 | { /* Failed check for echo of user input. |
4734 | We now have some suppressed output to flush! */ | |
0f71a2f6 JM |
4735 | int j; |
4736 | ||
c5aa993b | 4737 | for (j = 0; j < echo_check; j++) |
0f71a2f6 JM |
4738 | putchar (tty_input[j]); |
4739 | echo_check = -1; | |
4740 | } | |
4741 | } | |
c5aa993b | 4742 | putchar (data); /* Default case: output the char. */ |
0f71a2f6 JM |
4743 | } |
4744 | ||
c5aa993b JM |
4745 | if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */ |
4746 | return READ_MORE; /* Try to read some more */ | |
4747 | else | |
4748 | return FATAL_ERROR; /* Trouble, bail out */ | |
0f71a2f6 JM |
4749 | } |
4750 | ||
4751 | static int | |
4752 | readtty () | |
4753 | { | |
4754 | int status; | |
4755 | int tty_bytecount; | |
4756 | ||
4757 | /* First, read a buffer full from the terminal */ | |
4758 | tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1); | |
c5aa993b | 4759 | if (tty_bytecount == -1) |
0f71a2f6 JM |
4760 | { |
4761 | perror ("readtty: read failed"); | |
4762 | return FATAL_ERROR; | |
4763 | } | |
4764 | ||
4765 | /* Remove a quoted newline. */ | |
4766 | if (tty_input[tty_bytecount - 1] == '\n' && | |
4767 | tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */ | |
4768 | { | |
c5aa993b JM |
4769 | tty_input[--tty_bytecount] = 0; /* remove newline */ |
4770 | tty_input[--tty_bytecount] = 0; /* remove backslash */ | |
0f71a2f6 JM |
4771 | } |
4772 | ||
4773 | /* Turn trailing newlines into returns */ | |
4774 | if (tty_input[tty_bytecount - 1] == '\n') | |
c5aa993b | 4775 | tty_input[tty_bytecount - 1] = '\r'; |
0f71a2f6 JM |
4776 | |
4777 | /* If the line consists of a ~, enter debugging mode. */ | |
4778 | if ((tty_input[0] == '~') && (tty_bytecount == 2)) | |
4779 | return ENTER_DEBUG; | |
4780 | ||
4781 | /* Make this a zero terminated string and write it out */ | |
4782 | tty_input[tty_bytecount] = 0; | |
c5aa993b | 4783 | if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount)) |
0f71a2f6 JM |
4784 | { |
4785 | perror_with_name ("readtty: write failed"); | |
4786 | return FATAL_ERROR; | |
4787 | } | |
4788 | ||
4789 | return READ_MORE; | |
4790 | } | |
4791 | ||
4792 | static int | |
4793 | minitelnet () | |
4794 | { | |
4795 | fd_set input; /* file descriptors for select */ | |
c5aa993b JM |
4796 | int tablesize; /* max number of FDs for select */ |
4797 | int status; | |
4798 | int quit_count = 0; | |
0f71a2f6 JM |
4799 | |
4800 | extern int escape_count; /* global shared by readsocket */ | |
4801 | extern int echo_check; /* ditto */ | |
4802 | ||
4803 | escape_count = 0; | |
c5aa993b | 4804 | echo_check = -1; |
0f71a2f6 JM |
4805 | |
4806 | tablesize = 8 * sizeof (input); | |
4807 | ||
c5aa993b | 4808 | for (;;) |
0f71a2f6 JM |
4809 | { |
4810 | /* Check for anything from our socket - doesn't block. Note that | |
c5aa993b JM |
4811 | this must be done *before* the select as there may be |
4812 | buffered I/O waiting to be processed. */ | |
0f71a2f6 | 4813 | |
c5aa993b | 4814 | if ((status = readsocket ()) == FATAL_ERROR) |
0f71a2f6 JM |
4815 | { |
4816 | error ("Debugging terminated by communications error"); | |
4817 | } | |
c5aa993b | 4818 | else if (status != READ_MORE) |
0f71a2f6 JM |
4819 | { |
4820 | return (status); | |
4821 | } | |
4822 | ||
c5aa993b | 4823 | fflush (stdout); /* Flush output before blocking */ |
0f71a2f6 JM |
4824 | |
4825 | /* Now block on more socket input or TTY input */ | |
c5aa993b | 4826 | |
0f71a2f6 | 4827 | FD_ZERO (&input); |
c5aa993b | 4828 | FD_SET (fileno (stdin), &input); |
0f71a2f6 JM |
4829 | FD_SET (remote_desc->fd, &input); |
4830 | ||
4831 | status = select (tablesize, &input, 0, 0, 0); | |
c5aa993b | 4832 | if ((status == -1) && (errno != EINTR)) |
0f71a2f6 JM |
4833 | { |
4834 | error ("Communications error on select %d", errno); | |
4835 | } | |
4836 | ||
4837 | /* Handle Control-C typed */ | |
4838 | ||
c5aa993b | 4839 | if (quit_flag) |
0f71a2f6 JM |
4840 | { |
4841 | if ((++quit_count) == 2) | |
4842 | { | |
4843 | if (query ("Interrupt GDB? ")) | |
4844 | { | |
4845 | printf_filtered ("Interrupted by user.\n"); | |
4846 | return_to_top_level (RETURN_QUIT); | |
4847 | } | |
4848 | quit_count = 0; | |
4849 | } | |
4850 | quit_flag = 0; | |
4851 | ||
4852 | if (remote_break) | |
4853 | SERIAL_SEND_BREAK (remote_desc); | |
4854 | else | |
4855 | SERIAL_WRITE (remote_desc, "\003", 1); | |
4856 | ||
4857 | continue; | |
4858 | } | |
4859 | ||
4860 | /* Handle console input */ | |
4861 | ||
c5aa993b | 4862 | if (FD_ISSET (fileno (stdin), &input)) |
0f71a2f6 JM |
4863 | { |
4864 | quit_count = 0; | |
4865 | echo_check = 0; | |
4866 | status = readtty (); | |
4867 | if (status == READ_MORE) | |
4868 | continue; | |
4869 | ||
4870 | return status; /* telnet session ended */ | |
4871 | } | |
4872 | } | |
4873 | } | |
4874 | ||
4875 | static int | |
4876 | remote_cisco_wait (pid, status) | |
4877 | int pid; | |
4878 | struct target_waitstatus *status; | |
4879 | { | |
c5aa993b | 4880 | if (minitelnet () != ENTER_DEBUG) |
0f71a2f6 JM |
4881 | { |
4882 | error ("Debugging session terminated by protocol error"); | |
4883 | } | |
4884 | putpkt ("?"); | |
4885 | return remote_wait (pid, status); | |
4886 | } | |
4887 | ||
4888 | static void | |
4889 | init_remote_cisco_ops () | |
4890 | { | |
4891 | remote_cisco_ops.to_shortname = "cisco"; | |
c5aa993b JM |
4892 | remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol"; |
4893 | remote_cisco_ops.to_doc = | |
0f71a2f6 JM |
4894 | "Use a remote machine via TCP, using a cisco-specific protocol.\n\ |
4895 | Specify the serial device it is connected to (e.g. host:2020)."; | |
c5aa993b JM |
4896 | remote_cisco_ops.to_open = remote_cisco_open; |
4897 | remote_cisco_ops.to_close = remote_cisco_close; | |
4898 | remote_cisco_ops.to_detach = remote_detach; | |
4899 | remote_cisco_ops.to_resume = remote_resume; | |
4900 | remote_cisco_ops.to_wait = remote_cisco_wait; | |
4901 | remote_cisco_ops.to_fetch_registers = remote_fetch_registers; | |
4902 | remote_cisco_ops.to_store_registers = remote_store_registers; | |
4903 | remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store; | |
4904 | remote_cisco_ops.to_xfer_memory = remote_xfer_memory; | |
4905 | remote_cisco_ops.to_files_info = remote_files_info; | |
0f71a2f6 JM |
4906 | remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4907 | remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4908 | remote_cisco_ops.to_kill = remote_kill; |
4909 | remote_cisco_ops.to_load = generic_load; | |
4910 | remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn; | |
4911 | remote_cisco_ops.to_thread_alive = remote_thread_alive; | |
4912 | remote_cisco_ops.to_find_new_threads = remote_threads_info; | |
4913 | remote_cisco_ops.to_stratum = process_stratum; | |
4914 | remote_cisco_ops.to_has_all_memory = 1; | |
4915 | remote_cisco_ops.to_has_memory = 1; | |
4916 | remote_cisco_ops.to_has_stack = 1; | |
4917 | remote_cisco_ops.to_has_registers = 1; | |
4918 | remote_cisco_ops.to_has_execution = 1; | |
4919 | remote_cisco_ops.to_magic = OPS_MAGIC; | |
0f71a2f6 JM |
4920 | } |
4921 | ||
43ff13b4 JM |
4922 | /* Target async and target extended-async. |
4923 | ||
4924 | This are temporary targets, until it is all tested. Eventually | |
4925 | async support will be incorporated int the usual 'remote' | |
4926 | target. */ | |
4927 | ||
4928 | static void | |
4929 | init_remote_async_ops () | |
4930 | { | |
4931 | remote_async_ops.to_shortname = "async"; | |
c5aa993b JM |
4932 | remote_async_ops.to_longname = "Remote serial target in async version of the gdb-specific protocol"; |
4933 | remote_async_ops.to_doc = | |
43ff13b4 JM |
4934 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
4935 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
4936 | remote_async_ops.to_open = remote_async_open; |
4937 | remote_async_ops.to_close = remote_close; | |
4938 | remote_async_ops.to_detach = remote_async_detach; | |
4939 | remote_async_ops.to_resume = remote_async_resume; | |
4940 | remote_async_ops.to_wait = remote_async_wait; | |
4941 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
4942 | remote_async_ops.to_store_registers = remote_store_registers; | |
4943 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
4944 | remote_async_ops.to_xfer_memory = remote_xfer_memory; | |
4945 | remote_async_ops.to_files_info = remote_files_info; | |
43ff13b4 JM |
4946 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
4947 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
c5aa993b JM |
4948 | remote_async_ops.to_kill = remote_async_kill; |
4949 | remote_async_ops.to_load = generic_load; | |
4950 | remote_async_ops.to_mourn_inferior = remote_mourn; | |
4951 | remote_async_ops.to_thread_alive = remote_thread_alive; | |
4952 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
43ff13b4 JM |
4953 | remote_async_ops.to_stop = remote_stop; |
4954 | remote_async_ops.to_query = remote_query; | |
c5aa993b JM |
4955 | remote_async_ops.to_stratum = process_stratum; |
4956 | remote_async_ops.to_has_all_memory = 1; | |
4957 | remote_async_ops.to_has_memory = 1; | |
4958 | remote_async_ops.to_has_stack = 1; | |
4959 | remote_async_ops.to_has_registers = 1; | |
4960 | remote_async_ops.to_has_execution = 1; | |
4961 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
4962 | remote_async_ops.to_has_async_exec = 1; | |
4963 | remote_async_ops.to_magic = OPS_MAGIC; | |
43ff13b4 JM |
4964 | } |
4965 | ||
4966 | /* Set up the async extended remote vector by making a copy of the standard | |
4967 | remote vector and adding to it. */ | |
4968 | ||
4969 | static void | |
4970 | init_extended_async_remote_ops () | |
4971 | { | |
4972 | extended_async_remote_ops = remote_async_ops; | |
4973 | ||
4974 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 4975 | extended_async_remote_ops.to_longname = |
43ff13b4 | 4976 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 4977 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
4978 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
4979 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 4980 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
4981 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
4982 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
4983 | } | |
4984 | ||
5a2468f5 JM |
4985 | static void |
4986 | set_remote_cmd (args, from_tty) | |
4987 | char *args; | |
4988 | int from_tty; | |
4989 | { | |
4990 | ||
4991 | } | |
4992 | ||
4993 | ||
0f71a2f6 JM |
4994 | static void |
4995 | build_remote_gdbarch_data () | |
4996 | { | |
4997 | tty_input = xmalloc (PBUFSIZ); | |
4998 | } | |
4999 | ||
c906108c SS |
5000 | void |
5001 | _initialize_remote () | |
5002 | { | |
5a2468f5 JM |
5003 | static struct cmd_list_element *remote_set_cmdlist; |
5004 | static struct cmd_list_element *remote_show_cmdlist; | |
5005 | ||
0f71a2f6 JM |
5006 | /* architecture specific data */ |
5007 | build_remote_gdbarch_data (); | |
5008 | register_gdbarch_swap (&tty_input, sizeof (&tty_input), NULL); | |
5009 | register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
5010 | ||
5011 | /* runtime constants - we retain the value of remote_write_size | |
5012 | across architecture swaps. */ | |
cce74817 JM |
5013 | remote_write_size = PBUFSIZ; |
5014 | ||
c906108c SS |
5015 | init_remote_ops (); |
5016 | add_target (&remote_ops); | |
5017 | ||
5018 | init_extended_remote_ops (); | |
5019 | add_target (&extended_remote_ops); | |
cce74817 | 5020 | |
43ff13b4 JM |
5021 | init_remote_async_ops (); |
5022 | add_target (&remote_async_ops); | |
5023 | ||
5024 | init_extended_async_remote_ops (); | |
5025 | add_target (&extended_async_remote_ops); | |
5026 | ||
0f71a2f6 JM |
5027 | init_remote_cisco_ops (); |
5028 | add_target (&remote_cisco_ops); | |
5029 | ||
c906108c SS |
5030 | #if 0 |
5031 | init_remote_threadtests (); | |
5032 | #endif | |
5033 | ||
5a2468f5 JM |
5034 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ |
5035 | Remote protocol specific variables\n\ | |
5036 | Configure various remote-protocol specific variables such as\n\ | |
5037 | the packets being used", | |
5038 | &remote_set_cmdlist, "remote ", | |
5039 | 0/*allow-unknown*/, &setlist); | |
5040 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, "\ | |
5041 | Remote protocol specific variables\n\ | |
5042 | Configure various remote-protocol specific variables such as\n\ | |
5043 | the packets being used", | |
5044 | &remote_show_cmdlist, "remote ", | |
5045 | 0/*allow-unknown*/, &showlist); | |
5046 | ||
c5aa993b | 5047 | add_cmd ("compare-sections", class_obscure, compare_sections_command, |
c906108c | 5048 | "Compare section data on target to the exec file.\n\ |
c5aa993b | 5049 | Argument is a single section name (default: all loaded sections).", |
c906108c SS |
5050 | &cmdlist); |
5051 | ||
5052 | add_cmd ("packet", class_maintenance, packet_command, | |
5053 | "Send an arbitrary packet to a remote target.\n\ | |
5054 | maintenance packet TEXT\n\ | |
5055 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5056 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5057 | response packet. GDB supplies the initial `$' character, and the\n\ | |
5058 | terminating `#' character and checksum.", | |
5059 | &maintenancelist); | |
5060 | ||
c5aa993b | 5061 | add_show_from_set |
c906108c | 5062 | (add_set_cmd ("remotetimeout", no_class, |
c5aa993b | 5063 | var_integer, (char *) &remote_timeout, |
c906108c SS |
5064 | "Set timeout value for remote read.\n", |
5065 | &setlist), | |
5066 | &showlist); | |
5067 | ||
c5aa993b | 5068 | add_show_from_set |
c906108c | 5069 | (add_set_cmd ("remotebreak", no_class, |
adf40b2e | 5070 | var_boolean, (char *) &remote_break, |
c906108c SS |
5071 | "Set whether to send break if interrupted.\n", |
5072 | &setlist), | |
5073 | &showlist); | |
5074 | ||
c5aa993b | 5075 | add_show_from_set |
c906108c | 5076 | (add_set_cmd ("remotewritesize", no_class, |
c5aa993b JM |
5077 | var_integer, (char *) &remote_write_size, |
5078 | "Set the maximum number of bytes per memory write packet.\n", | |
c906108c SS |
5079 | &setlist), |
5080 | &showlist); | |
5081 | ||
5082 | remote_address_size = TARGET_PTR_BIT; | |
c5aa993b | 5083 | add_show_from_set |
c906108c | 5084 | (add_set_cmd ("remoteaddresssize", class_obscure, |
c5aa993b | 5085 | var_integer, (char *) &remote_address_size, |
c906108c SS |
5086 | "Set the maximum size of the address (in bits) \ |
5087 | in a memory packet.\n", | |
5088 | &setlist), | |
c5aa993b | 5089 | &showlist); |
c906108c | 5090 | |
c5aa993b | 5091 | add_show_from_set |
b83266a0 SS |
5092 | (add_set_cmd ("remotebinarydownload", no_class, |
5093 | var_boolean, (char *) &remote_binary_download, | |
5094 | "Set binary downloads.\n", &setlist), | |
5095 | &showlist); | |
0f71a2f6 JM |
5096 | |
5097 | add_info ("remote-process", remote_info_process, | |
5098 | "Query the remote system for process info."); | |
5099 | ||
5a2468f5 JM |
5100 | add_packet_config_cmd (&remote_protocol_P, "P", "set-register", |
5101 | set_remote_protocol_P_packet_cmd, | |
5102 | show_remote_protocol_P_packet_cmd, | |
5103 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 5104 | } |