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