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