Commit | Line | Data |
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c906108c SS |
1 | /* Remote debugging interface for boot monitors, for GDB. |
2 | Copyright 1990, 1991, 1992, 1993, 1995, 1996, 1997, 1999 | |
3 | Free Software Foundation, Inc. | |
4 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. | |
5 | Resurrected from the ashes by Stu Grossman. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | /* This file was derived from various remote-* modules. It is a collection | |
24 | of generic support functions so GDB can talk directly to a ROM based | |
25 | monitor. This saves use from having to hack an exception based handler | |
26 | into existance, and makes for quick porting. | |
27 | ||
28 | This module talks to a debug monitor called 'MONITOR', which | |
29 | We communicate with MONITOR via either a direct serial line, or a TCP | |
30 | (or possibly TELNET) stream to a terminal multiplexor, | |
31 | which in turn talks to the target board. */ | |
32 | ||
33 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
34 | most 32 bits long. If they can be larger, you will need to declare | |
35 | values as LONGEST and use %llx or some such to print values when | |
36 | building commands to send to the monitor. Since we don't know of | |
37 | any actual 64-bit targets with ROM monitors that use this code, | |
38 | it's not an issue right now. -sts 4/18/96 */ | |
39 | ||
40 | #include "defs.h" | |
41 | #include "gdbcore.h" | |
42 | #include "target.h" | |
43 | #include "wait.h" | |
44 | #ifdef ANSI_PROTOTYPES | |
45 | #include <stdarg.h> | |
46 | #else | |
47 | #include <varargs.h> | |
48 | #endif | |
49 | #include <signal.h> | |
50 | #include <ctype.h> | |
51 | #include "gdb_string.h" | |
52 | #include <sys/types.h> | |
53 | #include "command.h" | |
54 | #include "serial.h" | |
55 | #include "monitor.h" | |
56 | #include "gdbcmd.h" | |
57 | #include "inferior.h" | |
58 | #include "gnu-regex.h" | |
59 | #include "dcache.h" | |
60 | #include "srec.h" | |
61 | ||
62 | static char *dev_name; | |
63 | static struct target_ops *targ_ops; | |
64 | ||
65 | static void monitor_vsprintf PARAMS ((char *sndbuf, char *pattern, va_list args)); | |
66 | ||
67 | static int readchar PARAMS ((int timeout)); | |
68 | ||
69 | static void monitor_command PARAMS ((char *args, int fromtty)); | |
70 | ||
71 | static void monitor_fetch_register PARAMS ((int regno)); | |
72 | static void monitor_store_register PARAMS ((int regno)); | |
73 | ||
74 | static int monitor_printable_string PARAMS ((char *newstr, char *oldstr)); | |
75 | static void monitor_error PARAMS ((char *format, CORE_ADDR memaddr, int len, char *string, int final_char)); | |
76 | static void monitor_detach PARAMS ((char *args, int from_tty)); | |
77 | static void monitor_resume PARAMS ((int pid, int step, enum target_signal sig)); | |
78 | static void monitor_interrupt PARAMS ((int signo)); | |
79 | static void monitor_interrupt_twice PARAMS ((int signo)); | |
80 | static void monitor_interrupt_query PARAMS ((void)); | |
81 | static void monitor_wait_cleanup PARAMS ((void *old_timeout)); | |
82 | ||
83 | static int monitor_wait PARAMS ((int pid, struct target_waitstatus *status)); | |
84 | static void monitor_fetch_registers PARAMS ((int regno)); | |
85 | static void monitor_store_registers PARAMS ((int regno)); | |
86 | static void monitor_prepare_to_store PARAMS ((void)); | |
87 | static int monitor_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len, int write, struct target_ops *target)); | |
88 | static void monitor_files_info PARAMS ((struct target_ops *ops)); | |
89 | static int monitor_insert_breakpoint PARAMS ((CORE_ADDR addr, char *shadow)); | |
90 | static int monitor_remove_breakpoint PARAMS ((CORE_ADDR addr, char *shadow)); | |
91 | static void monitor_kill PARAMS ((void)); | |
92 | static void monitor_load PARAMS ((char *file, int from_tty)); | |
93 | static void monitor_mourn_inferior PARAMS ((void)); | |
94 | static void monitor_stop PARAMS ((void)); | |
95 | ||
96 | static int monitor_read_memory PARAMS ((CORE_ADDR addr, char *myaddr,int len)); | |
97 | static int monitor_write_memory PARAMS ((CORE_ADDR addr, char *myaddr,int len)); | |
98 | static int monitor_write_memory_bytes PARAMS ((CORE_ADDR addr, | |
99 | char *myaddr,int len)); | |
100 | static int monitor_write_memory_block PARAMS(( | |
101 | CORE_ADDR memaddr , | |
102 | char * myaddr , | |
103 | int len)) ; | |
104 | static int monitor_expect_regexp PARAMS ((struct re_pattern_buffer *pat, | |
105 | char *buf, int buflen)); | |
106 | static void monitor_dump_regs PARAMS((void)) ; | |
107 | #if 0 | |
108 | static int from_hex PARAMS ((int a)); | |
109 | static unsigned long get_hex_word PARAMS ((void)); | |
110 | #endif | |
111 | static void parse_register_dump PARAMS ((char *, int)); | |
112 | ||
113 | static struct monitor_ops *current_monitor; | |
114 | ||
115 | static int hashmark; /* flag set by "set hash" */ | |
116 | ||
117 | static int timeout = 30; | |
118 | ||
119 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ | |
120 | ||
121 | static void (*ofunc)(); /* Old SIGINT signal handler */ | |
122 | ||
9e086581 JM |
123 | static CORE_ADDR *breakaddr; |
124 | ||
c906108c SS |
125 | /* Extra remote debugging for developing a new rom monitor variation */ |
126 | #if ! defined(EXTRA_RDEBUG) | |
127 | #define EXTRA_RDEBUG 0 | |
128 | #endif | |
129 | #define RDEBUG(stuff) { if (EXTRA_RDEBUG && remote_debug) printf stuff ; } | |
130 | ||
131 | /* Descriptor for I/O to remote machine. Initialize it to NULL so | |
132 | that monitor_open knows that we don't have a file open when the | |
133 | program starts. */ | |
134 | ||
135 | static serial_t monitor_desc = NULL; | |
136 | ||
137 | /* Pointer to regexp pattern matching data */ | |
138 | ||
139 | static struct re_pattern_buffer register_pattern; | |
140 | static char register_fastmap[256]; | |
141 | ||
142 | static struct re_pattern_buffer getmem_resp_delim_pattern; | |
143 | static char getmem_resp_delim_fastmap[256]; | |
144 | ||
145 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when | |
146 | monitor_wait wakes up. */ | |
147 | ||
148 | static DCACHE *remote_dcache; | |
149 | static int first_time=0; /* is this the first time we're executing after | |
150 | gaving created the child proccess? */ | |
151 | ||
152 | /* Convert a string into a printable representation, Return # byte in the | |
153 | new string. */ | |
154 | ||
155 | static int | |
156 | monitor_printable_string (newstr, oldstr) | |
157 | char *newstr; | |
158 | char *oldstr; | |
159 | { | |
160 | char *save = newstr; | |
161 | int ch; | |
162 | ||
163 | while ((ch = *oldstr++) != '\0') | |
164 | { | |
165 | switch (ch) | |
166 | { | |
167 | default: | |
168 | if (isprint (ch)) | |
169 | *newstr++ = ch; | |
170 | ||
171 | else | |
172 | { | |
173 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
174 | newstr += 4; | |
175 | } | |
176 | break; | |
177 | ||
178 | case '\\': *newstr++ = '\\'; *newstr++ = '\\'; break; | |
179 | case '\b': *newstr++ = '\\'; *newstr++ = 'b'; break; | |
180 | case '\f': *newstr++ = '\\'; *newstr++ = 't'; break; | |
181 | case '\n': *newstr++ = '\\'; *newstr++ = 'n'; break; | |
182 | case '\r': *newstr++ = '\\'; *newstr++ = 'r'; break; | |
183 | case '\t': *newstr++ = '\\'; *newstr++ = 't'; break; | |
184 | case '\v': *newstr++ = '\\'; *newstr++ = 'v'; break; | |
185 | } | |
186 | } | |
187 | ||
188 | *newstr++ = '\0'; | |
189 | return newstr - save; | |
190 | } | |
191 | ||
192 | /* Print monitor errors with a string, converting the string to printable | |
193 | representation. */ | |
194 | ||
195 | static void | |
196 | monitor_error (format, memaddr, len, string, final_char) | |
197 | char *format; | |
198 | CORE_ADDR memaddr; | |
199 | int len; | |
200 | char *string; | |
201 | int final_char; | |
202 | { | |
203 | int real_len = (len == 0 && string != (char *)0) ? strlen (string) : len; | |
204 | char *safe_string = alloca ((real_len * 4) + 1); | |
205 | char *p, *q; | |
206 | int ch; | |
207 | int safe_len = monitor_printable_string (safe_string, string); | |
208 | ||
209 | if (final_char) | |
210 | error (format, (int)memaddr, p - safe_string, safe_string, final_char); | |
211 | else | |
212 | error (format, (int)memaddr, p - safe_string, safe_string); | |
213 | } | |
214 | ||
215 | /* Convert hex digit A to a number. */ | |
216 | ||
217 | static int | |
218 | fromhex (a) | |
219 | int a; | |
220 | { | |
221 | if (a >= '0' && a <= '9') | |
222 | return a - '0'; | |
223 | else if (a >= 'a' && a <= 'f') | |
224 | return a - 'a' + 10; | |
225 | else | |
226 | if (a >= 'A' && a <= 'F') | |
227 | return a - 'A' + 10 ; | |
228 | else error ("Invalid hex digit %d", a); | |
229 | } | |
230 | ||
231 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
232 | ||
233 | This function exists to get around the problem that many host platforms | |
234 | don't have a printf that can print 64-bit addresses. The %A format | |
235 | specification is recognized as a special case, and causes the argument | |
236 | to be printed as a 64-bit hexadecimal address. | |
237 | ||
238 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
239 | If it is a '%s' format, the argument is a string; otherwise the | |
240 | argument is assumed to be a long integer. | |
241 | ||
242 | %% is also turned into a single %. | |
243 | */ | |
244 | ||
245 | static void | |
246 | monitor_vsprintf (sndbuf, pattern, args) | |
247 | char *sndbuf; | |
248 | char *pattern; | |
249 | va_list args; | |
250 | { | |
251 | char format[10]; | |
252 | char fmt; | |
253 | char *p; | |
254 | int i; | |
255 | long arg_int; | |
256 | CORE_ADDR arg_addr; | |
257 | char *arg_string; | |
258 | ||
259 | for (p = pattern; *p; p++) | |
260 | { | |
261 | if (*p == '%') | |
262 | { | |
263 | /* Copy the format specifier to a separate buffer. */ | |
264 | format[0] = *p++; | |
265 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
266 | i++, p++) | |
267 | format[i] = *p; | |
268 | format[i] = fmt = *p; | |
269 | format[i+1] = '\0'; | |
270 | ||
271 | /* Fetch the next argument and print it. */ | |
272 | switch (fmt) | |
273 | { | |
274 | case '%': | |
275 | strcpy (sndbuf, "%"); | |
276 | break; | |
277 | case 'A': | |
278 | arg_addr = va_arg (args, CORE_ADDR); | |
279 | strcpy (sndbuf, paddr_nz (arg_addr)); | |
280 | break; | |
281 | case 's': | |
282 | arg_string = va_arg (args, char *); | |
283 | sprintf (sndbuf, format, arg_string); | |
284 | break; | |
285 | default: | |
286 | arg_int = va_arg (args, long); | |
287 | sprintf (sndbuf, format, arg_int); | |
288 | break; | |
289 | } | |
290 | sndbuf += strlen (sndbuf); | |
291 | } | |
292 | else | |
293 | *sndbuf++ = *p; | |
294 | } | |
295 | *sndbuf = '\0'; | |
296 | } | |
297 | ||
298 | ||
299 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
300 | Works just like printf. */ | |
301 | ||
302 | void | |
303 | #ifdef ANSI_PROTOTYPES | |
304 | monitor_printf_noecho (char *pattern, ...) | |
305 | #else | |
306 | monitor_printf_noecho (va_alist) | |
307 | va_dcl | |
308 | #endif | |
309 | { | |
310 | va_list args; | |
311 | char sndbuf[2000]; | |
312 | int len; | |
313 | ||
314 | #if ANSI_PROTOTYPES | |
315 | va_start (args, pattern); | |
316 | #else | |
317 | char *pattern; | |
318 | va_start (args); | |
319 | pattern = va_arg (args, char *); | |
320 | #endif | |
321 | ||
322 | monitor_vsprintf (sndbuf, pattern, args); | |
323 | ||
324 | len = strlen (sndbuf); | |
325 | if (len + 1 > sizeof sndbuf) | |
326 | abort (); | |
327 | ||
328 | #if 0 | |
329 | if (remote_debug > 0) | |
330 | puts_debug ("sent -->", sndbuf, "<--"); | |
331 | #endif | |
332 | if (EXTRA_RDEBUG | |
333 | && remote_debug) | |
334 | { | |
335 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
336 | monitor_printable_string (safe_string, sndbuf); | |
337 | printf ("sent[%s]\n", safe_string); | |
338 | } | |
339 | ||
340 | monitor_write (sndbuf, len); | |
341 | } | |
342 | ||
343 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
344 | printf. */ | |
345 | ||
346 | void | |
347 | #ifdef ANSI_PROTOTYPES | |
348 | monitor_printf (char *pattern, ...) | |
349 | #else | |
350 | monitor_printf (va_alist) | |
351 | va_dcl | |
352 | #endif | |
353 | { | |
354 | va_list args; | |
355 | char sndbuf[2000]; | |
356 | int len; | |
357 | ||
358 | #ifdef ANSI_PROTOTYPES | |
359 | va_start (args, pattern); | |
360 | #else | |
361 | char *pattern; | |
362 | va_start (args); | |
363 | pattern = va_arg (args, char *); | |
364 | #endif | |
365 | ||
366 | monitor_vsprintf (sndbuf, pattern, args); | |
367 | ||
368 | len = strlen (sndbuf); | |
369 | if (len + 1 > sizeof sndbuf) | |
370 | abort (); | |
371 | ||
372 | #if 0 | |
373 | if (remote_debug > 0) | |
374 | puts_debug ("sent -->", sndbuf, "<--"); | |
375 | #endif | |
376 | if (EXTRA_RDEBUG | |
377 | && remote_debug) | |
378 | { | |
379 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
380 | monitor_printable_string (safe_string, sndbuf); | |
381 | printf ("sent[%s]\n", safe_string); | |
382 | } | |
383 | ||
384 | monitor_write (sndbuf, len); | |
385 | ||
386 | /* We used to expect that the next immediate output was the characters we | |
387 | just output, but sometimes some extra junk appeared before the characters | |
388 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. | |
389 | So, just start searching for what we sent, and skip anything unknown. */ | |
390 | RDEBUG(("ExpectEcho\n")) | |
391 | monitor_expect (sndbuf, (char *)0, 0); | |
392 | } | |
393 | ||
394 | ||
395 | /* Write characters to the remote system. */ | |
396 | ||
397 | void | |
398 | monitor_write (buf, buflen) | |
399 | char *buf; | |
400 | int buflen; | |
401 | { | |
402 | if (SERIAL_WRITE(monitor_desc, buf, buflen)) | |
403 | fprintf_unfiltered (gdb_stderr, "SERIAL_WRITE failed: %s\n", | |
404 | safe_strerror (errno)); | |
405 | } | |
406 | ||
407 | ||
408 | /* Read a binary character from the remote system, doing all the fancy | |
409 | timeout stuff, but without interpreting the character in any way, | |
410 | and without printing remote debug information. */ | |
411 | ||
412 | int | |
413 | monitor_readchar () | |
414 | { | |
415 | int c; | |
416 | int looping; | |
417 | ||
418 | do | |
419 | { | |
420 | looping = 0; | |
421 | c = SERIAL_READCHAR (monitor_desc, timeout); | |
422 | ||
423 | if (c >= 0) | |
424 | c &= 0xff; /* don't lose bit 7 */ | |
425 | } | |
426 | while (looping); | |
427 | ||
428 | if (c >= 0) | |
429 | return c; | |
430 | ||
431 | if (c == SERIAL_TIMEOUT) | |
432 | error ("Timeout reading from remote system."); | |
433 | ||
434 | perror_with_name ("remote-monitor"); | |
435 | } | |
436 | ||
437 | ||
438 | /* Read a character from the remote system, doing all the fancy | |
439 | timeout stuff. */ | |
440 | ||
441 | static int | |
442 | readchar (timeout) | |
443 | int timeout; | |
444 | { | |
445 | int c; | |
446 | static enum { last_random, last_nl, last_cr, last_crnl } state = last_random; | |
447 | int looping; | |
448 | ||
449 | do | |
450 | { | |
451 | looping = 0; | |
452 | c = SERIAL_READCHAR (monitor_desc, timeout); | |
453 | ||
454 | if (c >= 0) | |
455 | { | |
456 | c &= 0x7f; | |
457 | #if 0 | |
458 | /* This seems to interfere with proper function of the | |
459 | input stream */ | |
460 | if (remote_debug > 0) | |
461 | { | |
462 | char buf[2]; | |
463 | buf[0] = c; | |
464 | buf[1] = '\0'; | |
465 | puts_debug ("read -->", buf, "<--"); | |
466 | } | |
467 | ||
468 | #endif | |
469 | } | |
470 | ||
471 | /* Canonicialize \n\r combinations into one \r */ | |
472 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) | |
473 | { | |
474 | if ((c == '\r' && state == last_nl) | |
475 | || (c == '\n' && state == last_cr)) | |
476 | { | |
477 | state = last_crnl; | |
478 | looping = 1; | |
479 | } | |
480 | else if (c == '\r') | |
481 | state = last_cr; | |
482 | else if (c != '\n') | |
483 | state = last_random; | |
484 | else | |
485 | { | |
486 | state = last_nl; | |
487 | c = '\r'; | |
488 | } | |
489 | } | |
490 | } | |
491 | while (looping); | |
492 | ||
493 | if (c >= 0) | |
494 | return c; | |
495 | ||
496 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 497 | #if 0 |
c906108c SS |
498 | /* I fail to see how detaching here can be useful */ |
499 | if (in_monitor_wait) /* Watchdog went off */ | |
500 | { | |
501 | target_mourn_inferior (); | |
502 | error ("GDB serial timeout has expired. Target detached.\n"); | |
503 | } | |
504 | else | |
505 | #endif | |
506 | error ("Timeout reading from remote system."); | |
507 | ||
508 | perror_with_name ("remote-monitor"); | |
509 | } | |
510 | ||
511 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
512 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
513 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
514 | because STRING can't be found, return -1, else return number of chars in BUF | |
515 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
516 | will be at the end of BUF. */ | |
517 | ||
518 | int | |
519 | monitor_expect (string, buf, buflen) | |
520 | char *string; | |
521 | char *buf; | |
522 | int buflen; | |
523 | { | |
524 | char *p = string; | |
525 | int obuflen = buflen; | |
526 | int c; | |
527 | extern struct target_ops *targ_ops; | |
528 | ||
529 | if (EXTRA_RDEBUG | |
530 | && remote_debug) | |
531 | { | |
532 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
533 | monitor_printable_string (safe_string, string); | |
534 | printf ("MON Expecting '%s'\n", safe_string); | |
535 | } | |
536 | ||
537 | immediate_quit = 1; | |
538 | while (1) | |
539 | { | |
540 | if (buf) | |
541 | { | |
542 | if (buflen < 2) | |
543 | { | |
544 | *buf = '\000'; | |
545 | immediate_quit = 0; | |
546 | return -1; | |
547 | } | |
548 | ||
549 | c = readchar (timeout); | |
550 | if (c == '\000') | |
551 | continue; | |
552 | *buf++ = c; | |
553 | buflen--; | |
554 | } | |
555 | else | |
556 | c = readchar (timeout); | |
557 | ||
558 | /* Don't expect any ^C sent to be echoed */ | |
559 | ||
560 | if (*p == '\003' || c == *p) | |
561 | { | |
562 | p++; | |
563 | if (*p == '\0') | |
564 | { | |
565 | immediate_quit = 0; | |
566 | ||
567 | if (buf) | |
568 | { | |
569 | *buf++ = '\000'; | |
570 | return obuflen - buflen; | |
571 | } | |
572 | else | |
573 | return 0; | |
574 | } | |
575 | } | |
576 | else if ((c == '\021' || c == '\023') && | |
577 | (STREQ (targ_ops->to_shortname, "m32r") | |
578 | || STREQ (targ_ops->to_shortname, "mon2000"))) | |
579 | { /* m32r monitor emits random DC1/DC3 chars */ | |
580 | continue; | |
581 | } | |
582 | else | |
583 | { | |
584 | p = string; | |
585 | if (c == *p) | |
586 | p++; | |
587 | } | |
588 | } | |
589 | } | |
590 | ||
591 | /* Search for a regexp. */ | |
592 | ||
593 | static int | |
594 | monitor_expect_regexp (pat, buf, buflen) | |
595 | struct re_pattern_buffer *pat; | |
596 | char *buf; | |
597 | int buflen; | |
598 | { | |
599 | char *mybuf; | |
600 | char *p; | |
601 | RDEBUG(("MON Expecting regexp\n")) ; | |
602 | if (buf) | |
603 | mybuf = buf; | |
604 | else | |
605 | { | |
606 | mybuf = alloca (1024); | |
607 | buflen = 1024; | |
608 | } | |
609 | ||
610 | p = mybuf; | |
611 | while (1) | |
612 | { | |
613 | int retval; | |
614 | ||
615 | if (p - mybuf >= buflen) | |
616 | { /* Buffer about to overflow */ | |
617 | ||
618 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
619 | great, but it usually works... */ | |
620 | ||
621 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
622 | p = mybuf + buflen / 2; | |
623 | } | |
624 | ||
625 | *p++ = readchar (timeout); | |
626 | ||
627 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
628 | if (retval >= 0) | |
629 | return 1; | |
630 | } | |
631 | } | |
632 | ||
633 | /* Keep discarding input until we see the MONITOR prompt. | |
634 | ||
635 | The convention for dealing with the prompt is that you | |
636 | o give your command | |
637 | o *then* wait for the prompt. | |
638 | ||
639 | Thus the last thing that a procedure does with the serial line will | |
640 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
641 | wait for the prompt, because the terminal is being handed over to | |
642 | the inferior. However, the next thing which happens after that is | |
643 | a monitor_wait which does wait for the prompt. Note that this | |
644 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
645 | getting into states from which we can't recover. */ | |
646 | ||
647 | int | |
648 | monitor_expect_prompt (buf, buflen) | |
649 | char *buf; | |
650 | int buflen; | |
651 | { | |
652 | RDEBUG(("MON Expecting prompt\n")) | |
653 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
654 | } | |
655 | ||
656 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
657 | them in registers starting at REGNO. */ | |
658 | ||
659 | #if 0 | |
660 | static unsigned long | |
661 | get_hex_word () | |
662 | { | |
663 | unsigned long val; | |
664 | int i; | |
665 | int ch; | |
666 | ||
667 | do | |
668 | ch = readchar (timeout); | |
669 | while (isspace(ch)); | |
670 | ||
671 | val = from_hex (ch); | |
672 | ||
673 | for (i = 7; i >= 1; i--) | |
674 | { | |
675 | ch = readchar (timeout); | |
676 | if (!isxdigit (ch)) | |
677 | break; | |
678 | val = (val << 4) | from_hex (ch); | |
679 | } | |
680 | ||
681 | return val; | |
682 | } | |
683 | #endif | |
684 | ||
685 | static void | |
686 | compile_pattern (pattern, compiled_pattern, fastmap) | |
687 | char *pattern; | |
688 | struct re_pattern_buffer *compiled_pattern; | |
689 | char *fastmap; | |
690 | { | |
691 | int tmp; | |
692 | const char *val; | |
693 | ||
694 | compiled_pattern->fastmap = fastmap; | |
695 | ||
696 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
697 | val = re_compile_pattern (pattern, | |
698 | strlen (pattern), | |
699 | compiled_pattern); | |
700 | re_set_syntax (tmp); | |
701 | ||
702 | if (val) | |
703 | error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern, val); | |
704 | ||
705 | if (fastmap) | |
706 | re_compile_fastmap (compiled_pattern); | |
707 | } | |
708 | ||
709 | /* Open a connection to a remote debugger. NAME is the filename used | |
710 | for communication. */ | |
711 | ||
712 | void | |
713 | monitor_open (args, mon_ops, from_tty) | |
714 | char *args; | |
715 | struct monitor_ops *mon_ops; | |
716 | int from_tty; | |
717 | { | |
718 | char *name; | |
719 | char **p; | |
720 | ||
721 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
722 | error ("Magic number of monitor_ops struct wrong."); | |
723 | ||
724 | targ_ops = mon_ops->target; | |
725 | name = targ_ops->to_shortname; | |
726 | ||
727 | if (!args) | |
728 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ | |
729 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); | |
730 | ||
731 | target_preopen (from_tty); | |
732 | ||
733 | /* Setup pattern for register dump */ | |
734 | ||
735 | if (mon_ops->register_pattern) | |
736 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
737 | register_fastmap); | |
738 | ||
739 | if (mon_ops->getmem.resp_delim) | |
740 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
741 | getmem_resp_delim_fastmap); | |
742 | ||
743 | unpush_target (targ_ops); | |
744 | ||
745 | if (dev_name) | |
746 | free (dev_name); | |
747 | dev_name = strsave (args); | |
748 | ||
749 | monitor_desc = SERIAL_OPEN (dev_name); | |
750 | ||
751 | if (!monitor_desc) | |
752 | perror_with_name (dev_name); | |
753 | ||
754 | if (baud_rate != -1) | |
755 | { | |
756 | if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) | |
757 | { | |
758 | SERIAL_CLOSE (monitor_desc); | |
759 | perror_with_name (dev_name); | |
760 | } | |
761 | } | |
762 | ||
763 | SERIAL_RAW (monitor_desc); | |
764 | ||
765 | SERIAL_FLUSH_INPUT (monitor_desc); | |
766 | ||
767 | /* some systems only work with 2 stop bits */ | |
768 | ||
769 | SERIAL_SETSTOPBITS (monitor_desc, mon_ops->stopbits); | |
770 | ||
771 | current_monitor = mon_ops; | |
772 | ||
773 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
774 | then send the init strings. Last, remove all breakpoints. */ | |
775 | ||
776 | if (current_monitor->stop) | |
777 | { | |
778 | monitor_stop (); | |
779 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) | |
780 | { | |
781 | RDEBUG(("EXP Open echo\n")) ; | |
782 | monitor_expect_prompt (NULL, 0); | |
783 | } | |
784 | } | |
785 | ||
786 | /* wake up the monitor and see if it's alive */ | |
787 | for (p = mon_ops->init; *p != NULL; p++) | |
788 | { | |
789 | /* Some of the characters we send may not be echoed, | |
790 | but we hope to get a prompt at the end of it all. */ | |
791 | ||
792 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) | |
793 | monitor_printf(*p); | |
794 | else | |
795 | monitor_printf_noecho (*p); | |
796 | monitor_expect_prompt (NULL, 0); | |
797 | } | |
798 | ||
799 | SERIAL_FLUSH_INPUT (monitor_desc); | |
800 | ||
9e086581 JM |
801 | /* Alloc breakpoints */ |
802 | if (mon_ops->set_break != NULL) | |
803 | { | |
804 | if (mon_ops->num_breakpoints == 0) | |
805 | mon_ops->num_breakpoints = 8; | |
806 | ||
807 | breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
808 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
809 | } | |
810 | ||
c906108c SS |
811 | /* Remove all breakpoints */ |
812 | ||
813 | if (mon_ops->clr_all_break) | |
814 | { | |
815 | monitor_printf (mon_ops->clr_all_break); | |
816 | monitor_expect_prompt (NULL, 0); | |
817 | } | |
818 | ||
819 | if (from_tty) | |
820 | printf_unfiltered ("Remote target %s connected to %s\n", name, dev_name); | |
821 | ||
822 | push_target (targ_ops); | |
823 | ||
824 | inferior_pid = 42000; /* Make run command think we are busy... */ | |
825 | ||
826 | /* Give monitor_wait something to read */ | |
827 | ||
828 | monitor_printf (current_monitor->line_term); | |
829 | ||
830 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
831 | remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory_block); | |
832 | else | |
833 | remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory); | |
834 | start_remote (); | |
835 | } | |
836 | ||
837 | /* Close out all files and local state before this target loses | |
838 | control. */ | |
839 | ||
840 | void | |
841 | monitor_close (quitting) | |
842 | int quitting; | |
843 | { | |
844 | if (monitor_desc) | |
845 | SERIAL_CLOSE (monitor_desc); | |
9e086581 JM |
846 | |
847 | /* Free breakpoint memory */ | |
848 | if (breakaddr != NULL) | |
849 | { | |
850 | free (breakaddr); | |
851 | breakaddr = NULL; | |
852 | } | |
853 | ||
c906108c SS |
854 | monitor_desc = NULL; |
855 | } | |
856 | ||
857 | /* Terminate the open connection to the remote debugger. Use this | |
858 | when you want to detach and do something else with your gdb. */ | |
859 | ||
860 | static void | |
861 | monitor_detach (args, from_tty) | |
862 | char *args; | |
863 | int from_tty; | |
864 | { | |
865 | pop_target (); /* calls monitor_close to do the real work */ | |
866 | if (from_tty) | |
867 | printf_unfiltered ("Ending remote %s debugging\n", target_shortname); | |
868 | } | |
869 | ||
870 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
871 | ||
872 | char * | |
873 | monitor_supply_register (regno, valstr) | |
874 | int regno; | |
875 | char *valstr; | |
876 | { | |
877 | unsigned int val; | |
878 | unsigned char regbuf[MAX_REGISTER_RAW_SIZE]; | |
879 | char *p; | |
880 | ||
881 | val = strtoul (valstr, &p, 16); | |
882 | RDEBUG(("Supplying Register %d %s\n",regno,valstr)) ; | |
883 | ||
884 | if (val == 0 && valstr == p) | |
885 | error ("monitor_supply_register (%d): bad value from monitor: %s.", | |
886 | regno, valstr); | |
887 | ||
888 | /* supply register stores in target byte order, so swap here */ | |
889 | ||
890 | store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), val); | |
891 | ||
892 | supply_register (regno, regbuf); | |
893 | ||
894 | return p; | |
895 | } | |
896 | ||
897 | /* Tell the remote machine to resume. */ | |
898 | ||
899 | void | |
900 | flush_monitor_dcache () | |
901 | { | |
902 | dcache_flush (remote_dcache); | |
903 | } | |
904 | ||
905 | static void | |
906 | monitor_resume (pid, step, sig) | |
907 | int pid, step; | |
908 | enum target_signal sig; | |
909 | { | |
910 | /* Some monitors require a different command when starting a program */ | |
911 | RDEBUG(("MON resume\n")) ; | |
912 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) | |
913 | { | |
914 | first_time = 0; | |
915 | monitor_printf ("run\r"); | |
916 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
917 | dump_reg_flag = 1; | |
918 | return; | |
919 | } | |
920 | dcache_flush (remote_dcache); | |
921 | if (step) | |
922 | monitor_printf (current_monitor->step); | |
923 | else | |
924 | { | |
925 | if (current_monitor->continue_hook) | |
926 | (*current_monitor->continue_hook)() ; | |
927 | else monitor_printf (current_monitor->cont); | |
928 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
929 | dump_reg_flag = 1; | |
930 | } | |
931 | } | |
932 | ||
933 | /* Parse the output of a register dump command. A monitor specific | |
934 | regexp is used to extract individual register descriptions of the | |
935 | form REG=VAL. Each description is split up into a name and a value | |
936 | string which are passed down to monitor specific code. */ | |
937 | ||
938 | static void | |
939 | parse_register_dump (buf, len) | |
940 | char *buf; | |
941 | int len; | |
942 | { | |
943 | RDEBUG(("MON Parsing register dump\n")) | |
944 | while (1) | |
945 | { | |
946 | int regnamelen, vallen; | |
947 | char *regname, *val; | |
948 | /* Element 0 points to start of register name, and element 1 | |
949 | points to the start of the register value. */ | |
950 | struct re_registers register_strings; | |
951 | ||
952 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
953 | ||
954 | if (re_search (®ister_pattern, buf, len, 0, len, | |
955 | ®ister_strings) == -1) | |
956 | break; | |
957 | ||
958 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
959 | regname = buf + register_strings.start[1]; | |
960 | vallen = register_strings.end[2] - register_strings.start[2]; | |
961 | val = buf + register_strings.start[2]; | |
962 | ||
963 | current_monitor->supply_register (regname, regnamelen, val, vallen); | |
964 | ||
965 | buf += register_strings.end[0]; | |
966 | len -= register_strings.end[0]; | |
967 | } | |
968 | } | |
969 | ||
970 | /* Send ^C to target to halt it. Target will respond, and send us a | |
971 | packet. */ | |
972 | ||
973 | static void | |
974 | monitor_interrupt (signo) | |
975 | int signo; | |
976 | { | |
977 | /* If this doesn't work, try more severe steps. */ | |
978 | signal (signo, monitor_interrupt_twice); | |
979 | ||
980 | if (remote_debug) | |
981 | printf_unfiltered ("monitor_interrupt called\n"); | |
982 | ||
983 | target_stop (); | |
984 | } | |
985 | ||
986 | /* The user typed ^C twice. */ | |
987 | ||
988 | static void | |
989 | monitor_interrupt_twice (signo) | |
990 | int signo; | |
991 | { | |
992 | signal (signo, ofunc); | |
993 | ||
994 | monitor_interrupt_query (); | |
995 | ||
996 | signal (signo, monitor_interrupt); | |
997 | } | |
998 | ||
999 | /* Ask the user what to do when an interrupt is received. */ | |
1000 | ||
1001 | static void | |
1002 | monitor_interrupt_query () | |
1003 | { | |
1004 | target_terminal_ours (); | |
1005 | ||
1006 | if (query ("Interrupted while waiting for the program.\n\ | |
1007 | Give up (and stop debugging it)? ")) | |
1008 | { | |
1009 | target_mourn_inferior (); | |
1010 | return_to_top_level (RETURN_QUIT); | |
1011 | } | |
1012 | ||
1013 | target_terminal_inferior (); | |
1014 | } | |
1015 | ||
1016 | static void | |
1017 | monitor_wait_cleanup (old_timeout) | |
1018 | void *old_timeout; | |
1019 | { | |
1020 | timeout = *(int*)old_timeout; | |
1021 | signal (SIGINT, ofunc); | |
1022 | in_monitor_wait = 0; | |
1023 | } | |
1024 | ||
1025 | ||
1026 | ||
1027 | void monitor_wait_filter(char * buf, | |
1028 | int bufmax, | |
1029 | int * ext_resp_len, | |
1030 | struct target_waitstatus * status | |
1031 | ) | |
1032 | { | |
1033 | int resp_len ; | |
1034 | do | |
1035 | { | |
1036 | resp_len = monitor_expect_prompt (buf, bufmax); | |
1037 | * ext_resp_len =resp_len ; | |
1038 | ||
1039 | if (resp_len <= 0) | |
1040 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1041 | } | |
1042 | while (resp_len < 0); | |
1043 | ||
1044 | /* Print any output characters that were preceded by ^O. */ | |
1045 | /* FIXME - This would be great as a user settabgle flag */ | |
1046 | if (remote_debug || | |
1047 | current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
1048 | { | |
1049 | int i; | |
1050 | ||
1051 | for (i = 0; i < resp_len - 1; i++) | |
1052 | if (buf[i] == 0x0f) | |
1053 | putchar_unfiltered (buf[++i]); | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | ||
1058 | ||
1059 | /* Wait until the remote machine stops, then return, storing status in | |
1060 | status just as `wait' would. */ | |
1061 | ||
1062 | static int | |
1063 | monitor_wait (pid, status) | |
1064 | int pid; | |
1065 | struct target_waitstatus *status; | |
1066 | { | |
1067 | int old_timeout = timeout; | |
1068 | char buf[1024]; | |
1069 | int resp_len; | |
1070 | struct cleanup *old_chain; | |
1071 | ||
1072 | status->kind = TARGET_WAITKIND_EXITED; | |
1073 | status->value.integer = 0; | |
1074 | ||
1075 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
1076 | RDEBUG(("MON wait\n")) | |
1077 | ||
7a292a7a | 1078 | #if 0 |
c906108c SS |
1079 | /* This is somthing other than a maintenance command */ |
1080 | in_monitor_wait = 1; | |
1081 | timeout = watchdog > 0 ? watchdog : -1; | |
1082 | #else | |
1083 | timeout = -1; /* Don't time out -- user program is running. */ | |
1084 | #endif | |
1085 | ||
1086 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1087 | ||
1088 | if (current_monitor->wait_filter) | |
1089 | (*current_monitor->wait_filter)(buf,sizeof (buf),&resp_len,status) ; | |
1090 | else monitor_wait_filter(buf,sizeof (buf),&resp_len,status) ; | |
1091 | ||
1092 | #if 0 /* Transferred to monitor wait filter */ | |
1093 | do | |
1094 | { | |
1095 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1096 | ||
1097 | if (resp_len <= 0) | |
1098 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1099 | } | |
1100 | while (resp_len < 0); | |
1101 | ||
1102 | /* Print any output characters that were preceded by ^O. */ | |
1103 | /* FIXME - This would be great as a user settabgle flag */ | |
1104 | if (remote_debug || | |
1105 | current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
1106 | { | |
1107 | int i; | |
1108 | ||
1109 | for (i = 0; i < resp_len - 1; i++) | |
1110 | if (buf[i] == 0x0f) | |
1111 | putchar_unfiltered (buf[++i]); | |
1112 | } | |
1113 | #endif | |
1114 | ||
1115 | signal (SIGINT, ofunc); | |
1116 | ||
1117 | timeout = old_timeout; | |
1118 | #if 0 | |
1119 | if (dump_reg_flag && current_monitor->dump_registers) | |
1120 | { | |
1121 | dump_reg_flag = 0; | |
1122 | monitor_printf (current_monitor->dump_registers); | |
1123 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1124 | } | |
1125 | ||
1126 | if (current_monitor->register_pattern) | |
1127 | parse_register_dump (buf, resp_len); | |
1128 | #else | |
1129 | RDEBUG(("Wait fetching registers after stop\n")) ; | |
1130 | monitor_dump_regs() ; | |
1131 | #endif | |
1132 | ||
1133 | status->kind = TARGET_WAITKIND_STOPPED; | |
1134 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1135 | ||
1136 | discard_cleanups (old_chain); | |
1137 | ||
1138 | in_monitor_wait = 0; | |
1139 | ||
1140 | return inferior_pid; | |
1141 | } | |
1142 | ||
1143 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns | |
1144 | errno value. */ | |
1145 | ||
1146 | static void | |
1147 | monitor_fetch_register (regno) | |
1148 | int regno; | |
1149 | { | |
1150 | char *name; | |
1151 | static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; | |
1152 | char regbuf[MAX_REGISTER_RAW_SIZE * 2 + 1]; | |
1153 | int i; | |
1154 | ||
1155 | name = current_monitor->regnames[regno]; | |
7a292a7a | 1156 | RDEBUG(("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)")) |
c906108c SS |
1157 | |
1158 | if (!name || (*name == '\0')) | |
7a292a7a SS |
1159 | { |
1160 | RDEBUG (("No register known for %d\n", regno)) | |
c906108c SS |
1161 | supply_register (regno, zerobuf); |
1162 | return; | |
1163 | } | |
1164 | ||
1165 | /* send the register examine command */ | |
1166 | ||
1167 | monitor_printf (current_monitor->getreg.cmd, name); | |
1168 | ||
1169 | /* If RESP_DELIM is specified, we search for that as a leading | |
1170 | delimiter for the register value. Otherwise, we just start | |
1171 | searching from the start of the buf. */ | |
1172 | ||
1173 | if (current_monitor->getreg.resp_delim) | |
1174 | { | |
1175 | RDEBUG(("EXP getreg.resp_delim\n")) | |
1176 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
1177 | /* Handle case of first 32 registers listed in pairs. */ | |
1178 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a SS |
1179 | && (regno & 1) != 0 && regno < 32) |
1180 | { RDEBUG(("EXP getreg.resp_delim\n")) ; | |
c906108c SS |
1181 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1182 | } | |
1183 | } | |
1184 | ||
1185 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ | |
1186 | if (current_monitor->flags & MO_HEX_PREFIX) | |
1187 | { | |
1188 | int c; | |
1189 | c = readchar (timeout); | |
1190 | while (c == ' ') | |
1191 | c = readchar (timeout); | |
1192 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1193 | ; | |
1194 | else | |
1195 | error ("Bad value returned from monitor while fetching register %x.", | |
1196 | regno); | |
1197 | } | |
1198 | ||
1199 | /* Read upto the maximum number of hex digits for this register, skipping | |
1200 | spaces, but stop reading if something else is seen. Some monitors | |
1201 | like to drop leading zeros. */ | |
1202 | ||
1203 | for (i = 0; i < REGISTER_RAW_SIZE (regno) * 2; i++) | |
1204 | { | |
1205 | int c; | |
1206 | c = readchar (timeout); | |
1207 | while (c == ' ') | |
1208 | c = readchar (timeout); | |
1209 | ||
1210 | if (!isxdigit (c)) | |
1211 | break; | |
1212 | ||
1213 | regbuf[i] = c; | |
1214 | } | |
1215 | ||
1216 | regbuf[i] = '\000'; /* terminate the number */ | |
1217 | RDEBUG(("REGVAL '%s'\n",regbuf)) ; | |
1218 | ||
1219 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1220 | is present), we will send TERM_CMD if that is present. In any | |
1221 | case, we collect all of the output into buf, and then wait for | |
1222 | the normal prompt. */ | |
1223 | ||
1224 | if (current_monitor->getreg.term) | |
1225 | { | |
1226 | RDEBUG(("EXP getreg.term\n")) | |
1227 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ | |
1228 | } | |
1229 | ||
1230 | if (current_monitor->getreg.term_cmd) | |
1231 | { RDEBUG(("EMIT getreg.term.cmd\n")) | |
1232 | monitor_printf (current_monitor->getreg.term_cmd); | |
1233 | } | |
1234 | if (! current_monitor->getreg.term || /* Already expected or */ | |
1235 | current_monitor->getreg.term_cmd) /* ack expected */ | |
1236 | monitor_expect_prompt (NULL, 0); /* get response */ | |
1237 | ||
1238 | monitor_supply_register (regno, regbuf); | |
1239 | } | |
1240 | ||
1241 | /* Sometimes, it takes several commands to dump the registers */ | |
1242 | /* This is a primitive for use by variations of monitor interfaces in | |
1243 | case they need to compose the operation. | |
1244 | */ | |
1245 | int monitor_dump_reg_block(char * block_cmd) | |
1246 | { | |
1247 | char buf[1024]; | |
1248 | int resp_len; | |
1249 | monitor_printf (block_cmd); | |
1250 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1251 | parse_register_dump (buf, resp_len); | |
1252 | return 1 ; | |
1253 | } | |
1254 | ||
1255 | ||
1256 | /* Read the remote registers into the block regs. */ | |
1257 | /* Call the specific function if it has been provided */ | |
1258 | ||
1259 | static void | |
1260 | monitor_dump_regs () | |
1261 | { | |
1262 | char buf[1024]; | |
1263 | int resp_len; | |
1264 | if (current_monitor->dumpregs) | |
1265 | (*(current_monitor->dumpregs))() ; /* call supplied function */ | |
1266 | else | |
1267 | if (current_monitor->dump_registers) /* default version */ | |
1268 | { monitor_printf (current_monitor->dump_registers); | |
1269 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1270 | parse_register_dump (buf, resp_len); | |
1271 | } | |
1272 | else | |
1273 | abort(); /* Need some way to read registers */ | |
1274 | } | |
1275 | ||
1276 | static void | |
1277 | monitor_fetch_registers (regno) | |
1278 | int regno; | |
1279 | { | |
1280 | RDEBUG(("MON fetchregs\n")) ; | |
1281 | if (current_monitor->getreg.cmd) | |
1282 | { | |
1283 | if (regno >= 0) | |
1284 | { | |
1285 | monitor_fetch_register (regno); | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | for (regno = 0; regno < NUM_REGS; regno++) | |
1290 | monitor_fetch_register (regno); | |
1291 | } | |
1292 | else { | |
1293 | monitor_dump_regs (); | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1298 | ||
1299 | static void | |
1300 | monitor_store_register (regno) | |
1301 | int regno; | |
1302 | { | |
1303 | char *name; | |
1304 | unsigned int val; | |
1305 | ||
1306 | name = current_monitor->regnames[regno]; | |
1307 | if (!name || (*name == '\0')) | |
1308 | { RDEBUG(("MON Cannot store unknown register\n")) | |
1309 | return; | |
1310 | } | |
1311 | ||
1312 | val = read_register (regno); | |
1313 | RDEBUG(("MON storeg %d %08x\n",regno,(unsigned int)val)) | |
1314 | ||
1315 | /* send the register deposit command */ | |
1316 | ||
1317 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) | |
1318 | monitor_printf (current_monitor->setreg.cmd, val, name); | |
1319 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1320 | monitor_printf (current_monitor->setreg.cmd, name); | |
1321 | else | |
1322 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1323 | ||
1324 | if (current_monitor->setreg.term) | |
1325 | { RDEBUG(("EXP setreg.term\n")) | |
1326 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
1327 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1328 | monitor_printf ("%x\r", val); | |
1329 | monitor_expect_prompt (NULL, 0); | |
1330 | } | |
1331 | else | |
1332 | monitor_expect_prompt (NULL, 0); | |
1333 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ | |
1334 | { RDEBUG(("EXP setreg_termcmd\n")) ; | |
1335 | monitor_printf("%s",current_monitor->setreg.term_cmd) ; | |
1336 | monitor_expect_prompt(NULL,0) ; | |
1337 | } | |
1338 | } /* monitor_store_register */ | |
1339 | ||
1340 | /* Store the remote registers. */ | |
1341 | ||
1342 | static void | |
1343 | monitor_store_registers (regno) | |
1344 | int regno; | |
1345 | { | |
1346 | if (regno >= 0) | |
1347 | { | |
1348 | monitor_store_register (regno); | |
1349 | return; | |
1350 | } | |
1351 | ||
1352 | for (regno = 0; regno < NUM_REGS; regno++) | |
1353 | monitor_store_register (regno); | |
1354 | } | |
1355 | ||
1356 | /* Get ready to modify the registers array. On machines which store | |
1357 | individual registers, this doesn't need to do anything. On machines | |
1358 | which store all the registers in one fell swoop, this makes sure | |
1359 | that registers contains all the registers from the program being | |
1360 | debugged. */ | |
1361 | ||
1362 | static void | |
1363 | monitor_prepare_to_store () | |
1364 | { | |
1365 | /* Do nothing, since we can store individual regs */ | |
1366 | } | |
1367 | ||
1368 | static void | |
1369 | monitor_files_info (ops) | |
1370 | struct target_ops *ops; | |
1371 | { | |
1372 | printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate); | |
1373 | } | |
1374 | ||
1375 | static int | |
1376 | monitor_write_memory (memaddr, myaddr, len) | |
1377 | CORE_ADDR memaddr; | |
1378 | char *myaddr; | |
1379 | int len; | |
1380 | { | |
1381 | unsigned int val, hostval ; | |
1382 | char *cmd; | |
1383 | int i; | |
1384 | ||
1385 | RDEBUG(("MON write %d %08x\n",len,(unsigned long)memaddr)) | |
1386 | ||
1387 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
1388 | memaddr = ADDR_BITS_REMOVE (memaddr); | |
1389 | ||
1390 | /* Use memory fill command for leading 0 bytes. */ | |
1391 | ||
1392 | if (current_monitor->fill) | |
1393 | { | |
1394 | for (i = 0; i < len; i++) | |
1395 | if (myaddr[i] != 0) | |
1396 | break; | |
1397 | ||
1398 | if (i > 4) /* More than 4 zeros is worth doing */ | |
1399 | { | |
1400 | RDEBUG(("MON FILL %d\n",i)) | |
1401 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
1402 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i)-1, 0); | |
1403 | else | |
1404 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
1405 | ||
1406 | monitor_expect_prompt (NULL, 0); | |
1407 | ||
1408 | return i; | |
1409 | } | |
1410 | } | |
1411 | ||
1412 | #if 0 | |
1413 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1414 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1415 | { | |
1416 | len = 8; | |
1417 | cmd = current_monitor->setmem.cmdll; | |
1418 | } | |
1419 | else | |
1420 | #endif | |
1421 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1422 | { | |
1423 | len = 4; | |
1424 | cmd = current_monitor->setmem.cmdl; | |
1425 | } | |
1426 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1427 | { | |
1428 | len = 2; | |
1429 | cmd = current_monitor->setmem.cmdw; | |
1430 | } | |
1431 | else | |
1432 | { | |
1433 | len = 1; | |
1434 | cmd = current_monitor->setmem.cmdb; | |
1435 | } | |
1436 | ||
1437 | val = extract_unsigned_integer (myaddr, len); | |
1438 | ||
1439 | if (len == 4) | |
1440 | { hostval = * (unsigned int *) myaddr ; | |
1441 | RDEBUG(("Hostval(%08x) val(%08x)\n",hostval,val)) ; | |
1442 | } | |
1443 | ||
1444 | ||
1445 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1446 | monitor_printf_noecho (cmd, memaddr, val); | |
1447 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1448 | { | |
1449 | ||
1450 | monitor_printf_noecho (cmd, memaddr); | |
1451 | ||
1452 | if (current_monitor->setmem.term) | |
1453 | { RDEBUG(("EXP setmem.term")) ; | |
1454 | monitor_expect (current_monitor->setmem.term, NULL, 0); | |
1455 | monitor_printf ("%x\r", val); | |
1456 | } | |
1457 | if (current_monitor->setmem.term_cmd) | |
1458 | { /* Emit this to get out of the memory editing state */ | |
1459 | monitor_printf("%s",current_monitor->setmem.term_cmd) ; | |
1460 | /* Drop through to expecting a prompt */ | |
1461 | } | |
1462 | } | |
1463 | else | |
1464 | monitor_printf (cmd, memaddr, val); | |
1465 | ||
1466 | monitor_expect_prompt (NULL, 0); | |
1467 | ||
1468 | return len; | |
1469 | } | |
1470 | ||
1471 | ||
1472 | static int | |
1473 | monitor_write_even_block(memaddr,myaddr,len) | |
1474 | CORE_ADDR memaddr ; | |
1475 | char * myaddr ; | |
1476 | int len ; | |
1477 | { | |
1478 | unsigned int val ; | |
1479 | int written = 0 ;; | |
1480 | /* Enter the sub mode */ | |
1481 | monitor_printf(current_monitor->setmem.cmdl,memaddr) ; | |
1482 | monitor_expect_prompt(NULL,0) ; | |
1483 | ||
1484 | while (len) | |
1485 | { | |
1486 | val = extract_unsigned_integer(myaddr,4) ; /* REALLY */ | |
1487 | monitor_printf("%x\r",val) ; | |
1488 | myaddr += 4 ; | |
1489 | memaddr += 4 ; | |
1490 | written += 4 ; | |
1491 | RDEBUG((" @ %08x\n",memaddr)) | |
1492 | /* If we wanted to, here we could validate the address */ | |
1493 | monitor_expect_prompt(NULL,0) ; | |
1494 | } | |
1495 | /* Now exit the sub mode */ | |
1496 | monitor_printf (current_monitor->getreg.term_cmd); | |
1497 | monitor_expect_prompt(NULL,0) ; | |
1498 | return written ; | |
1499 | } | |
1500 | ||
1501 | ||
1502 | static int monitor_write_memory_bytes(memaddr,myaddr,len) | |
1503 | CORE_ADDR memaddr ; | |
1504 | char * myaddr ; | |
1505 | int len ; | |
1506 | { | |
1507 | unsigned char val ; | |
1508 | int written = 0 ; | |
1509 | if (len == 0) return 0 ; | |
1510 | /* Enter the sub mode */ | |
1511 | monitor_printf(current_monitor->setmem.cmdb,memaddr) ; | |
1512 | monitor_expect_prompt(NULL,0) ; | |
1513 | while (len) | |
1514 | { | |
1515 | val = *myaddr ; | |
1516 | monitor_printf("%x\r",val) ; | |
1517 | myaddr++ ; | |
1518 | memaddr++ ; | |
1519 | written++ ; | |
1520 | /* If we wanted to, here we could validate the address */ | |
1521 | monitor_expect_prompt(NULL,0) ; | |
1522 | len-- ; | |
1523 | } | |
1524 | /* Now exit the sub mode */ | |
1525 | monitor_printf (current_monitor->getreg.term_cmd); | |
1526 | monitor_expect_prompt(NULL,0) ; | |
1527 | return written ; | |
1528 | } | |
1529 | ||
1530 | ||
1531 | static void | |
1532 | longlongendswap (unsigned char * a) | |
1533 | { | |
1534 | int i,j ; | |
1535 | unsigned char x ; | |
1536 | i = 0 ; j = 7 ; | |
1537 | while (i < 4) | |
1538 | { x = *(a+i) ; | |
1539 | *(a+i) = *(a+j) ; | |
1540 | *(a+j) = x ; | |
1541 | i++ , j-- ; | |
1542 | } | |
1543 | } | |
1544 | /* Format 32 chars of long long value, advance the pointer */ | |
1545 | static char * hexlate = "0123456789abcdef" ; | |
1546 | static char * longlong_hexchars(unsigned long long value, | |
1547 | char * outbuff ) | |
1548 | { | |
1549 | if (value == 0) { *outbuff++ = '0' ; return outbuff ; } | |
1550 | else | |
1551 | { static unsigned char disbuf[8] ; /* disassembly buffer */ | |
1552 | unsigned char * scan , * limit ; /* loop controls */ | |
1553 | unsigned char c , nib ; | |
1554 | int leadzero = 1 ; | |
1555 | scan = disbuf ; limit = scan + 8 ; | |
1556 | { unsigned long long * dp ; | |
1557 | dp = (unsigned long long *) scan ; | |
1558 | *dp = value ; | |
1559 | } | |
1560 | longlongendswap(disbuf) ; /* FIXME: ONly on big endian hosts */ | |
1561 | while (scan < limit) | |
7a292a7a SS |
1562 | { |
1563 | c = *scan++; /* a byte of our long long value */ | |
c906108c | 1564 | if (leadzero) |
7a292a7a SS |
1565 | { |
1566 | if (c == 0) | |
1567 | continue; | |
1568 | else | |
1569 | leadzero = 0; /* henceforth we print even zeroes */ | |
1570 | } | |
1571 | nib = c >> 4; /* high nibble bits */ | |
1572 | *outbuff++ = hexlate[nib]; | |
1573 | nib = c & 0x0f; /* low nibble bits */ | |
1574 | *outbuff++ = hexlate[nib]; | |
c906108c SS |
1575 | } |
1576 | return outbuff ; | |
1577 | } | |
1578 | } /* longlong_hexchars */ | |
1579 | ||
1580 | ||
1581 | ||
1582 | /* I am only going to call this when writing virtual byte streams. | |
1583 | Which possably entails endian conversions | |
1584 | */ | |
1585 | static int monitor_write_memory_longlongs(memaddr,myaddr,len) | |
1586 | CORE_ADDR memaddr ; | |
1587 | char * myaddr ; | |
1588 | int len ; | |
1589 | { | |
1590 | static char hexstage[20] ; /* At least 16 digits required, plus null */ | |
1591 | char * endstring ; | |
1592 | long long * llptr ; | |
1593 | long long value ; | |
1594 | int written = 0 ; | |
1595 | llptr = (unsigned long long *) myaddr ; | |
1596 | if (len == 0 ) return 0 ; | |
1597 | monitor_printf(current_monitor->setmem.cmdll,memaddr) ; | |
1598 | monitor_expect_prompt(NULL,0) ; | |
1599 | while (len >= 8 ) | |
1600 | { | |
1601 | value = *llptr ; | |
1602 | endstring = longlong_hexchars(*llptr,hexstage) ; | |
1603 | *endstring = '\0' ; /* NUll terminate for printf */ | |
1604 | monitor_printf("%s\r",hexstage) ; | |
1605 | llptr++ ; | |
1606 | memaddr += 8 ; | |
1607 | written += 8 ; | |
1608 | /* If we wanted to, here we could validate the address */ | |
1609 | monitor_expect_prompt(NULL,0) ; | |
1610 | len -= 8 ; | |
1611 | } | |
1612 | /* Now exit the sub mode */ | |
1613 | monitor_printf (current_monitor->getreg.term_cmd); | |
1614 | monitor_expect_prompt(NULL,0) ; | |
1615 | return written ; | |
1616 | } /* */ | |
1617 | ||
1618 | ||
1619 | ||
1620 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1621 | /* This is for the large blocks of memory which may occur in downloading. | |
1622 | And for monitors which use interactive entry, | |
1623 | And for monitors which do not have other downloading methods. | |
1624 | Without this, we will end up calling monitor_write_memory many times | |
1625 | and do the entry and exit of the sub mode many times | |
1626 | This currently assumes... | |
1627 | MO_SETMEM_INTERACTIVE | |
1628 | ! MO_NO_ECHO_ON_SETMEM | |
1629 | To use this, the you have to patch the monitor_cmds block with | |
1630 | this function. Otherwise, its not tuned up for use by all | |
1631 | monitor variations. | |
1632 | */ | |
1633 | ||
1634 | static int monitor_write_memory_block(memaddr,myaddr,len) | |
1635 | CORE_ADDR memaddr ; | |
1636 | char * myaddr ; | |
1637 | int len ; | |
1638 | { | |
1639 | int written ; | |
1640 | written = 0 ; | |
1641 | /* FIXME: This would be a good place to put the zero test */ | |
1642 | #if 1 | |
1643 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) | |
1644 | { | |
1645 | return monitor_write_memory_longlongs(memaddr,myaddr,len) ; | |
1646 | } | |
1647 | #endif | |
1648 | #if 0 | |
1649 | if (len > 4) | |
1650 | { | |
1651 | int sublen ; | |
1652 | written = monitor_write_even_block(memaddr,myaddr,len) ; | |
1653 | /* Adjust calling parameters by written amount */ | |
1654 | memaddr += written ; | |
1655 | myaddr += written ; | |
1656 | len -= written ; | |
1657 | } | |
1658 | #endif | |
1659 | written = monitor_write_memory_bytes(memaddr,myaddr,len) ; | |
1660 | return written ; | |
1661 | } | |
1662 | ||
1663 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1664 | which can only read a single byte/word/etc. at a time. */ | |
1665 | ||
1666 | static int | |
1667 | monitor_read_memory_single (memaddr, myaddr, len) | |
1668 | CORE_ADDR memaddr; | |
1669 | char *myaddr; | |
1670 | int len; | |
1671 | { | |
1672 | unsigned int val; | |
1673 | char membuf[sizeof(int) * 2 + 1]; | |
1674 | char *p; | |
1675 | char *cmd; | |
1676 | int i; | |
1677 | ||
1678 | RDEBUG(("MON read single\n")) ; | |
1679 | #if 0 | |
1680 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1681 | call to strtoul below will fail if it tries to convert a value | |
1682 | that's too big to fit in a long. */ | |
1683 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1684 | { | |
1685 | len = 8; | |
1686 | cmd = current_monitor->getmem.cmdll; | |
1687 | } | |
1688 | else | |
1689 | #endif | |
1690 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1691 | { | |
1692 | len = 4; | |
1693 | cmd = current_monitor->getmem.cmdl; | |
1694 | } | |
1695 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1696 | { | |
1697 | len = 2; | |
1698 | cmd = current_monitor->getmem.cmdw; | |
1699 | } | |
1700 | else | |
1701 | { | |
1702 | len = 1; | |
1703 | cmd = current_monitor->getmem.cmdb; | |
1704 | } | |
1705 | ||
1706 | /* Send the examine command. */ | |
1707 | ||
1708 | monitor_printf (cmd, memaddr); | |
1709 | ||
1710 | /* If RESP_DELIM is specified, we search for that as a leading | |
1711 | delimiter for the memory value. Otherwise, we just start | |
1712 | searching from the start of the buf. */ | |
1713 | ||
1714 | if (current_monitor->getmem.resp_delim) | |
1715 | { RDEBUG(("EXP getmem.resp_delim\n")) ; | |
1716 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); | |
1717 | } | |
1718 | ||
1719 | /* Now, read the appropriate number of hex digits for this loc, | |
1720 | skipping spaces. */ | |
1721 | ||
1722 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ | |
1723 | if (current_monitor->flags & MO_HEX_PREFIX) | |
1724 | { | |
1725 | int c; | |
1726 | ||
1727 | c = readchar (timeout); | |
1728 | while (c == ' ') | |
1729 | c = readchar (timeout); | |
1730 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1731 | ; | |
1732 | else | |
1733 | monitor_error ("monitor_read_memory_single (0x%x): bad response from monitor: %.*s%c.", | |
1734 | memaddr, i, membuf, c); | |
1735 | } | |
1736 | for (i = 0; i < len * 2; i++) | |
1737 | { | |
1738 | int c; | |
1739 | ||
1740 | while (1) | |
1741 | { | |
1742 | c = readchar (timeout); | |
1743 | if (isxdigit (c)) | |
1744 | break; | |
1745 | if (c == ' ') | |
1746 | continue; | |
1747 | ||
1748 | monitor_error ("monitor_read_memory_single (0x%x): bad response from monitor: %.*s%c.", | |
1749 | memaddr, i, membuf, c); | |
1750 | } | |
1751 | ||
1752 | membuf[i] = c; | |
1753 | } | |
1754 | ||
1755 | membuf[i] = '\000'; /* terminate the number */ | |
1756 | ||
1757 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1758 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1759 | all of the output into buf, and then wait for the normal prompt. */ | |
1760 | ||
1761 | if (current_monitor->getmem.term) | |
1762 | { | |
1763 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ | |
1764 | ||
1765 | if (current_monitor->getmem.term_cmd) | |
1766 | { | |
1767 | monitor_printf (current_monitor->getmem.term_cmd); | |
1768 | monitor_expect_prompt (NULL, 0); | |
1769 | } | |
1770 | } | |
1771 | else | |
1772 | monitor_expect_prompt (NULL, 0); /* get response */ | |
1773 | ||
1774 | p = membuf; | |
1775 | val = strtoul (membuf, &p, 16); | |
1776 | ||
1777 | if (val == 0 && membuf == p) | |
1778 | monitor_error ("monitor_read_memory_single (0x%x): bad value from monitor: %s.", | |
1779 | memaddr, 0, membuf, 0); | |
1780 | ||
1781 | /* supply register stores in target byte order, so swap here */ | |
1782 | ||
1783 | store_unsigned_integer (myaddr, len, val); | |
1784 | ||
1785 | return len; | |
1786 | } | |
1787 | ||
1788 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1789 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1790 | than 16 bytes at a time. */ | |
1791 | ||
1792 | static int | |
1793 | monitor_read_memory (memaddr, myaddr, len) | |
1794 | CORE_ADDR memaddr; | |
1795 | char *myaddr; | |
1796 | int len; | |
1797 | { | |
1798 | unsigned int val; | |
1799 | char buf[512]; | |
1800 | char *p, *p1; | |
1801 | int resp_len; | |
1802 | int i; | |
1803 | CORE_ADDR dumpaddr; | |
1804 | ||
1805 | if (len <= 0) | |
1806 | { | |
1807 | RDEBUG (("Zero length call to monitor_read_memory\n")); | |
1808 | return 0; | |
1809 | } | |
1810 | ||
1811 | if (remote_debug) printf("MON read block ta(%08x) ha(%08x) %d\n", | |
1812 | (unsigned long) memaddr , (unsigned long)myaddr, len); | |
1813 | ||
1814 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
1815 | memaddr = ADDR_BITS_REMOVE (memaddr); | |
1816 | ||
1817 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1818 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1819 | ||
1820 | len = min (len, 16); | |
1821 | ||
1822 | /* Some dumpers align the first data with the preceeding 16 | |
1823 | byte boundary. Some print blanks and start at the | |
1824 | requested boundary. EXACT_DUMPADDR | |
1825 | */ | |
1826 | ||
1827 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
1828 | ? memaddr : memaddr & ~ 0x0f ; | |
1829 | ||
1830 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1831 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1832 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1833 | ||
1834 | /* send the memory examine command */ | |
1835 | ||
1836 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1837 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1838 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1839 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1840 | else | |
1841 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1842 | ||
1843 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1844 | is present), we will send TERM_CMD if that is present. In any | |
1845 | case, we collect all of the output into buf, and then wait for | |
1846 | the normal prompt. */ | |
1847 | ||
1848 | if (current_monitor->getmem.term) | |
1849 | { | |
1850 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ | |
1851 | ||
1852 | if (resp_len <= 0) | |
1853 | monitor_error ("monitor_read_memory (0x%x): excessive response from monitor: %.*s.", | |
1854 | memaddr, resp_len, buf, 0); | |
1855 | ||
1856 | if (current_monitor->getmem.term_cmd) | |
1857 | { | |
1858 | SERIAL_WRITE (monitor_desc, current_monitor->getmem.term_cmd, | |
1859 | strlen (current_monitor->getmem.term_cmd)); | |
1860 | monitor_expect_prompt (NULL, 0); | |
1861 | } | |
1862 | } | |
1863 | else | |
1864 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ | |
1865 | ||
1866 | p = buf; | |
1867 | ||
1868 | /* If RESP_DELIM is specified, we search for that as a leading | |
1869 | delimiter for the values. Otherwise, we just start searching | |
1870 | from the start of the buf. */ | |
1871 | ||
1872 | if (current_monitor->getmem.resp_delim) | |
1873 | { | |
1874 | int retval, tmp; | |
1875 | struct re_registers resp_strings; | |
1876 | RDEBUG(("MON getmem.resp_delim %s\n",current_monitor->getmem.resp_delim)) ; | |
1877 | ||
1878 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1879 | tmp = strlen (p); | |
1880 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1881 | &resp_strings); | |
1882 | ||
1883 | if (retval < 0) | |
1884 | monitor_error ("monitor_read_memory (0x%x): bad response from monitor: %.*s.", | |
1885 | memaddr, resp_len, buf, 0); | |
1886 | ||
1887 | p += resp_strings.end[0]; | |
1888 | #if 0 | |
1889 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1890 | if (!p) | |
1891 | monitor_error ("monitor_read_memory (0x%x): bad response from monitor: %.*s.", | |
1892 | memaddr, resp_len, buf, 0); | |
1893 | p += strlen (current_monitor->getmem.resp_delim); | |
1894 | #endif | |
1895 | } | |
1896 | if (remote_debug) printf("MON scanning %d ,%08x '%s'\n",len,p,p) ; | |
1897 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) | |
1898 | { | |
1899 | char c ; | |
1900 | int fetched = 0 ; | |
1901 | i = len; | |
1902 | c = *p ; | |
1903 | ||
1904 | ||
1905 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1906 | { if (isxdigit (c)) | |
1907 | { if ((dumpaddr >= memaddr) && (i > 0)) | |
1908 | { val = fromhex (c) * 16 + fromhex (*(p+1)); | |
1909 | *myaddr++ = val; | |
1910 | if (remote_debug) printf("[%02x]",val) ; | |
1911 | --i; | |
1912 | fetched++ ; | |
1913 | } | |
1914 | ++dumpaddr; | |
1915 | ++p; | |
1916 | } | |
1917 | ++p; /* skip a blank or other non hex char */ | |
1918 | c = *p ; | |
1919 | } | |
1920 | if (fetched == 0) error("Failed to read via monitor") ; | |
1921 | if (remote_debug) printf("\n") ; | |
1922 | return fetched ; /* Return the number of bytes actually read */ | |
1923 | } | |
1924 | RDEBUG(("MON scanning bytes\n")) ; | |
1925 | ||
1926 | for (i = len; i > 0; i--) | |
1927 | { | |
1928 | /* Skip non-hex chars, but bomb on end of string and newlines */ | |
1929 | ||
1930 | while (1) | |
1931 | { | |
1932 | if (isxdigit (*p)) | |
1933 | break; | |
1934 | ||
1935 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
1936 | monitor_error ("monitor_read_memory (0x%x): badly terminated response from monitor: %.*s", | |
1937 | memaddr, resp_len, buf, 0); | |
1938 | p++; | |
1939 | } | |
1940 | ||
1941 | val = strtoul (p, &p1, 16); | |
1942 | ||
1943 | if (val == 0 && p == p1) | |
1944 | monitor_error ("monitor_read_memory (0x%x): bad value from monitor: %.*s.", | |
1945 | memaddr, resp_len, buf, 0); | |
1946 | ||
1947 | *myaddr++ = val; | |
1948 | ||
1949 | if (i == 1) | |
1950 | break; | |
1951 | ||
1952 | p = p1; | |
1953 | } | |
1954 | ||
1955 | return len; | |
1956 | } | |
1957 | ||
1958 | static int | |
1959 | monitor_xfer_memory (memaddr, myaddr, len, write, target) | |
1960 | CORE_ADDR memaddr; | |
1961 | char *myaddr; | |
1962 | int len; | |
1963 | int write; | |
1964 | struct target_ops *target; /* ignored */ | |
1965 | { | |
1966 | return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, write); | |
1967 | } | |
1968 | ||
1969 | static void | |
1970 | monitor_kill () | |
1971 | { | |
1972 | return; /* ignore attempts to kill target system */ | |
1973 | } | |
1974 | ||
1975 | /* All we actually do is set the PC to the start address of exec_bfd, and start | |
1976 | the program at that point. */ | |
1977 | ||
1978 | static void | |
1979 | monitor_create_inferior (exec_file, args, env) | |
1980 | char *exec_file; | |
1981 | char *args; | |
1982 | char **env; | |
1983 | { | |
1984 | if (args && (*args != '\000')) | |
1985 | error ("Args are not supported by the monitor."); | |
1986 | ||
1987 | first_time = 1; | |
1988 | clear_proceed_status (); | |
1989 | proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0); | |
1990 | } | |
1991 | ||
1992 | /* Clean up when a program exits. | |
1993 | The program actually lives on in the remote processor's RAM, and may be | |
1994 | run again without a download. Don't leave it full of breakpoint | |
1995 | instructions. */ | |
1996 | ||
1997 | static void | |
1998 | monitor_mourn_inferior () | |
1999 | { | |
2000 | unpush_target (targ_ops); | |
2001 | generic_mourn_inferior (); /* Do all the proper things now */ | |
2002 | } | |
2003 | ||
c906108c SS |
2004 | /* Tell the monitor to add a breakpoint. */ |
2005 | ||
2006 | static int | |
2007 | monitor_insert_breakpoint (addr, shadow) | |
2008 | CORE_ADDR addr; | |
2009 | char *shadow; | |
2010 | { | |
2011 | int i; | |
2012 | unsigned char *bp; | |
2013 | int bplen; | |
2014 | ||
2015 | RDEBUG(("MON inst bkpt %08x\n",addr)) | |
2016 | if (current_monitor->set_break == NULL) | |
2017 | error ("No set_break defined for this monitor"); | |
2018 | ||
2019 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2020 | addr = ADDR_BITS_REMOVE (addr); | |
2021 | ||
2022 | /* Determine appropriate breakpoint size for this address. */ | |
2023 | bp = memory_breakpoint_from_pc (&addr, &bplen); | |
2024 | ||
9e086581 | 2025 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2026 | { |
2027 | if (breakaddr[i] == 0) | |
2028 | { | |
2029 | breakaddr[i] = addr; | |
2030 | monitor_read_memory (addr, shadow, bplen); | |
2031 | monitor_printf (current_monitor->set_break, addr); | |
2032 | monitor_expect_prompt (NULL, 0); | |
2033 | return 0; | |
2034 | } | |
2035 | } | |
2036 | ||
9e086581 | 2037 | error ("Too many breakpoints (> %d) for monitor.", current_monitor->num_breakpoints); |
c906108c SS |
2038 | } |
2039 | ||
2040 | /* Tell the monitor to remove a breakpoint. */ | |
2041 | ||
2042 | static int | |
2043 | monitor_remove_breakpoint (addr, shadow) | |
2044 | CORE_ADDR addr; | |
2045 | char *shadow; | |
2046 | { | |
2047 | int i; | |
2048 | ||
2049 | RDEBUG(("MON rmbkpt %08x\n",addr)) | |
2050 | if (current_monitor->clr_break == NULL) | |
2051 | error ("No clr_break defined for this monitor"); | |
2052 | ||
2053 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2054 | addr = ADDR_BITS_REMOVE (addr); | |
2055 | ||
9e086581 | 2056 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2057 | { |
2058 | if (breakaddr[i] == addr) | |
2059 | { | |
2060 | breakaddr[i] = 0; | |
2061 | /* some monitors remove breakpoints based on the address */ | |
2062 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) | |
2063 | monitor_printf (current_monitor->clr_break, addr); | |
2064 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2065 | monitor_printf (current_monitor->clr_break, i + 1); | |
2066 | else | |
2067 | monitor_printf (current_monitor->clr_break, i); | |
2068 | monitor_expect_prompt (NULL, 0); | |
2069 | return 0; | |
2070 | } | |
2071 | } | |
2072 | fprintf_unfiltered (gdb_stderr, | |
2073 | "Can't find breakpoint associated with 0x%x\n", addr); | |
2074 | return 1; | |
2075 | } | |
2076 | ||
2077 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2078 | an S-record. Return non-zero if the ACK is received properly. */ | |
2079 | ||
2080 | static int | |
2081 | monitor_wait_srec_ack () | |
2082 | { | |
2083 | int i, ch; | |
2084 | ||
2085 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2086 | { | |
2087 | return (readchar (timeout) == '+'); | |
2088 | } | |
2089 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2090 | { | |
2091 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2092 | if ((ch = readchar (1)) < 0) | |
2093 | return 0; | |
2094 | if ((ch = readchar (1)) < 0) | |
2095 | return 0; | |
2096 | if ((ch = readchar (1)) < 0) | |
2097 | return 0; | |
2098 | if ((ch = readchar (1)) < 0) | |
2099 | return 0; | |
2100 | } | |
2101 | return 1; | |
2102 | } | |
2103 | ||
2104 | /* monitor_load -- download a file. */ | |
2105 | ||
2106 | static void | |
2107 | monitor_load (file, from_tty) | |
2108 | char *file; | |
2109 | int from_tty; | |
2110 | { | |
2111 | dcache_flush (remote_dcache); | |
2112 | RDEBUG(("MON load\n")) | |
2113 | ||
2114 | if (current_monitor->load_routine) | |
2115 | current_monitor->load_routine (monitor_desc, file, hashmark); | |
2116 | else | |
2117 | { /* The default is ascii S-records */ | |
2118 | int n; | |
2119 | unsigned long load_offset; | |
2120 | char buf[128]; | |
2121 | ||
2122 | /* enable user to specify address for downloading as 2nd arg to load */ | |
2123 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); | |
2124 | if (n > 1) | |
2125 | file = buf; | |
2126 | else | |
2127 | load_offset = 0; | |
2128 | ||
2129 | monitor_printf (current_monitor->load); | |
2130 | if (current_monitor->loadresp) | |
2131 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
2132 | ||
2133 | load_srec (monitor_desc, file, (bfd_vma) load_offset, | |
2134 | 32, SREC_ALL, hashmark, | |
2135 | current_monitor->flags & MO_SREC_ACK ? | |
2136 | monitor_wait_srec_ack : NULL); | |
2137 | ||
2138 | monitor_expect_prompt (NULL, 0); | |
2139 | } | |
2140 | ||
2141 | /* Finally, make the PC point at the start address */ | |
2142 | ||
2143 | if (exec_bfd) | |
2144 | write_pc (bfd_get_start_address (exec_bfd)); | |
2145 | ||
2146 | inferior_pid = 0; /* No process now */ | |
2147 | ||
2148 | /* This is necessary because many things were based on the PC at the time that | |
2149 | we attached to the monitor, which is no longer valid now that we have loaded | |
2150 | new code (and just changed the PC). Another way to do this might be to call | |
2151 | normal_stop, except that the stack may not be valid, and things would get | |
2152 | horribly confused... */ | |
2153 | ||
2154 | clear_symtab_users (); | |
2155 | } | |
2156 | ||
2157 | static void | |
2158 | monitor_stop () | |
2159 | { | |
2160 | RDEBUG(("MON stop\n")) ; | |
2161 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) | |
2162 | SERIAL_SEND_BREAK (monitor_desc); | |
2163 | if (current_monitor->stop) | |
2164 | monitor_printf_noecho (current_monitor->stop); | |
2165 | } | |
2166 | ||
2167 | /* Put a command string, in args, out to MONITOR. Output from MONITOR | |
2168 | is placed on the users terminal until the prompt is seen. FIXME: We | |
2169 | read the characters ourseleves here cause of a nasty echo. */ | |
2170 | ||
2171 | static void | |
2172 | monitor_command (args, from_tty) | |
2173 | char *args; | |
2174 | int from_tty; | |
2175 | { | |
2176 | char *p; | |
2177 | int resp_len; | |
2178 | char buf[1000]; | |
2179 | ||
2180 | if (monitor_desc == NULL) | |
2181 | error ("monitor target not open."); | |
2182 | ||
2183 | p = current_monitor->prompt; | |
2184 | ||
2185 | /* Send the command. Note that if no args were supplied, then we're | |
2186 | just sending the monitor a newline, which is sometimes useful. */ | |
2187 | ||
2188 | monitor_printf ("%s\r", (args ? args : "")); | |
2189 | ||
2190 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2191 | ||
2192 | fputs_unfiltered (buf, gdb_stdout); /* Output the response */ | |
2193 | } | |
2194 | ||
2195 | /* Convert hex digit A to a number. */ | |
2196 | ||
2197 | #if 0 | |
2198 | static int | |
2199 | from_hex (a) | |
2200 | int a; | |
2201 | { | |
2202 | if (a >= '0' && a <= '9') | |
2203 | return a - '0'; | |
2204 | if (a >= 'a' && a <= 'f') | |
2205 | return a - 'a' + 10; | |
2206 | if (a >= 'A' && a <= 'F') | |
2207 | return a - 'A' + 10; | |
2208 | ||
2209 | error ("Reply contains invalid hex digit 0x%x", a); | |
2210 | } | |
2211 | #endif | |
2212 | ||
2213 | char * | |
2214 | monitor_get_dev_name () | |
2215 | { | |
2216 | return dev_name; | |
2217 | } | |
2218 | ||
2219 | static struct target_ops monitor_ops; | |
2220 | ||
2221 | static void | |
2222 | init_base_monitor_ops (void) | |
2223 | { | |
2224 | monitor_ops.to_shortname = NULL; | |
2225 | monitor_ops.to_longname = NULL; | |
2226 | monitor_ops.to_doc = NULL; | |
2227 | monitor_ops.to_open = NULL; | |
2228 | monitor_ops.to_close = monitor_close; | |
2229 | monitor_ops.to_attach = NULL; | |
2230 | monitor_ops.to_post_attach = NULL; | |
2231 | monitor_ops.to_require_attach = NULL; | |
2232 | monitor_ops.to_detach = monitor_detach; | |
2233 | monitor_ops.to_require_detach = NULL; | |
2234 | monitor_ops.to_resume = monitor_resume; | |
2235 | monitor_ops.to_wait = monitor_wait; | |
2236 | monitor_ops.to_post_wait = NULL; | |
2237 | monitor_ops.to_fetch_registers = monitor_fetch_registers; | |
2238 | monitor_ops.to_store_registers = monitor_store_registers; | |
2239 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
2240 | monitor_ops.to_xfer_memory = monitor_xfer_memory; | |
2241 | monitor_ops.to_files_info = monitor_files_info; | |
2242 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2243 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
2244 | monitor_ops.to_terminal_init = 0; | |
2245 | monitor_ops.to_terminal_inferior = 0; | |
2246 | monitor_ops.to_terminal_ours_for_output = 0; | |
2247 | monitor_ops.to_terminal_ours = 0; | |
2248 | monitor_ops.to_terminal_info = 0; | |
2249 | monitor_ops.to_kill = monitor_kill; | |
2250 | monitor_ops.to_load = monitor_load; | |
2251 | monitor_ops.to_lookup_symbol = 0; | |
2252 | monitor_ops.to_create_inferior = monitor_create_inferior; | |
2253 | monitor_ops.to_post_startup_inferior = NULL; | |
2254 | monitor_ops.to_acknowledge_created_inferior = NULL; | |
2255 | monitor_ops.to_clone_and_follow_inferior = NULL; | |
2256 | monitor_ops.to_post_follow_inferior_by_clone = NULL; | |
2257 | monitor_ops.to_insert_fork_catchpoint = NULL; | |
2258 | monitor_ops.to_remove_fork_catchpoint = NULL; | |
2259 | monitor_ops.to_insert_vfork_catchpoint = NULL; | |
2260 | monitor_ops.to_remove_vfork_catchpoint = NULL; | |
2261 | monitor_ops.to_has_forked = NULL; | |
2262 | monitor_ops.to_has_vforked = NULL; | |
2263 | monitor_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
2264 | monitor_ops.to_post_follow_vfork = NULL; | |
2265 | monitor_ops.to_insert_exec_catchpoint = NULL; | |
2266 | monitor_ops.to_remove_exec_catchpoint = NULL; | |
2267 | monitor_ops.to_has_execd = NULL; | |
2268 | monitor_ops.to_reported_exec_events_per_exec_call = NULL; | |
2269 | monitor_ops.to_has_exited = NULL; | |
2270 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; | |
2271 | monitor_ops.to_can_run = 0; | |
2272 | monitor_ops.to_notice_signals = 0; | |
2273 | monitor_ops.to_thread_alive = 0; | |
2274 | monitor_ops.to_stop = monitor_stop; | |
2275 | monitor_ops.to_pid_to_exec_file = NULL; | |
2276 | monitor_ops.to_core_file_to_sym_file = NULL; | |
2277 | monitor_ops.to_stratum = process_stratum; | |
2278 | monitor_ops.DONT_USE = 0; | |
2279 | monitor_ops.to_has_all_memory = 1; | |
2280 | monitor_ops.to_has_memory = 1; | |
2281 | monitor_ops.to_has_stack = 1; | |
2282 | monitor_ops.to_has_registers = 1; | |
2283 | monitor_ops.to_has_execution = 1; | |
2284 | monitor_ops.to_sections = 0; | |
2285 | monitor_ops.to_sections_end = 0; | |
2286 | monitor_ops.to_magic = OPS_MAGIC; | |
2287 | } /* init_base_monitor_ops */ | |
2288 | ||
2289 | /* Init the target_ops structure pointed at by OPS */ | |
2290 | ||
2291 | void | |
2292 | init_monitor_ops (ops) | |
2293 | struct target_ops *ops; | |
2294 | { | |
2295 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2296 | init_base_monitor_ops (); | |
2297 | ||
2298 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2299 | } | |
2300 | ||
2301 | /* Define additional commands that are usually only used by monitors. */ | |
2302 | ||
2303 | void | |
2304 | _initialize_remote_monitors () | |
2305 | { | |
2306 | init_base_monitor_ops (); | |
2307 | add_show_from_set (add_set_cmd ("hash", no_class, var_boolean, | |
2308 | (char *)&hashmark, | |
2309 | "Set display of activity while downloading a file.\n\ | |
2310 | When enabled, a hashmark \'#\' is displayed.", | |
2311 | &setlist), | |
2312 | &showlist); | |
2313 | ||
2314 | add_com ("monitor", class_obscure, monitor_command, | |
2315 | "Send a command to the debug monitor."); | |
2316 | } | |
2317 | ||
2318 |