Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for boot monitors, for GDB. |
0a65a603 | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
0a65a603 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
7 | Resurrected from the ashes by Stu Grossman. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | /* This file was derived from various remote-* modules. It is a collection | |
25 | of generic support functions so GDB can talk directly to a ROM based | |
26 | monitor. This saves use from having to hack an exception based handler | |
8e1a459b | 27 | into existence, and makes for quick porting. |
c906108c SS |
28 | |
29 | This module talks to a debug monitor called 'MONITOR', which | |
30 | We communicate with MONITOR via either a direct serial line, or a TCP | |
31 | (or possibly TELNET) stream to a terminal multiplexor, | |
32 | which in turn talks to the target board. */ | |
33 | ||
34 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
35 | most 32 bits long. If they can be larger, you will need to declare | |
36 | values as LONGEST and use %llx or some such to print values when | |
37 | building commands to send to the monitor. Since we don't know of | |
38 | any actual 64-bit targets with ROM monitors that use this code, | |
39 | it's not an issue right now. -sts 4/18/96 */ | |
40 | ||
41 | #include "defs.h" | |
42 | #include "gdbcore.h" | |
43 | #include "target.h" | |
60250e8b | 44 | #include "exceptions.h" |
c906108c SS |
45 | #include <signal.h> |
46 | #include <ctype.h> | |
47 | #include "gdb_string.h" | |
48 | #include <sys/types.h> | |
49 | #include "command.h" | |
50 | #include "serial.h" | |
51 | #include "monitor.h" | |
52 | #include "gdbcmd.h" | |
53 | #include "inferior.h" | |
88987551 | 54 | #include "gdb_regex.h" |
c906108c | 55 | #include "srec.h" |
4e052eda | 56 | #include "regcache.h" |
c0a2216e | 57 | #include "gdbthread.h" |
c906108c SS |
58 | |
59 | static char *dev_name; | |
60 | static struct target_ops *targ_ops; | |
61 | ||
a14ed312 | 62 | static void monitor_interrupt_query (void); |
08ae6d95 | 63 | static void monitor_interrupt_twice (int); |
f9c72d52 | 64 | static void monitor_stop (ptid_t); |
c410a84c | 65 | static void monitor_dump_regs (struct regcache *regcache); |
08ae6d95 | 66 | |
c906108c | 67 | #if 0 |
a14ed312 | 68 | static int from_hex (int a); |
c906108c | 69 | #endif |
c906108c SS |
70 | |
71 | static struct monitor_ops *current_monitor; | |
72 | ||
73 | static int hashmark; /* flag set by "set hash" */ | |
74 | ||
75 | static int timeout = 30; | |
76 | ||
77 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ | |
78 | ||
c5aa993b | 79 | static void (*ofunc) (); /* Old SIGINT signal handler */ |
c906108c | 80 | |
9e086581 JM |
81 | static CORE_ADDR *breakaddr; |
82 | ||
c906108c SS |
83 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
84 | that monitor_open knows that we don't have a file open when the | |
85 | program starts. */ | |
86 | ||
ba3a8523 | 87 | static struct serial *monitor_desc = NULL; |
c906108c SS |
88 | |
89 | /* Pointer to regexp pattern matching data */ | |
90 | ||
91 | static struct re_pattern_buffer register_pattern; | |
92 | static char register_fastmap[256]; | |
93 | ||
94 | static struct re_pattern_buffer getmem_resp_delim_pattern; | |
95 | static char getmem_resp_delim_fastmap[256]; | |
96 | ||
1456ad8e AC |
97 | static struct re_pattern_buffer setmem_resp_delim_pattern; |
98 | static char setmem_resp_delim_fastmap[256]; | |
99 | ||
100 | static struct re_pattern_buffer setreg_resp_delim_pattern; | |
101 | static char setreg_resp_delim_fastmap[256]; | |
102 | ||
c906108c SS |
103 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when |
104 | monitor_wait wakes up. */ | |
105 | ||
c5aa993b JM |
106 | static int first_time = 0; /* is this the first time we're executing after |
107 | gaving created the child proccess? */ | |
c906108c | 108 | |
5e0b29c1 PA |
109 | |
110 | /* This is the ptid we use while we're connected to a monitor. Its | |
111 | value is arbitrary, as monitor targets don't have a notion of | |
112 | processes or threads, but we need something non-null to place in | |
113 | inferior_ptid. */ | |
114 | static ptid_t monitor_ptid; | |
115 | ||
d4f3574e SS |
116 | #define TARGET_BUF_SIZE 2048 |
117 | ||
2df3850c JM |
118 | /* Monitor specific debugging information. Typically only useful to |
119 | the developer of a new monitor interface. */ | |
c906108c | 120 | |
2df3850c JM |
121 | static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2); |
122 | ||
123 | static int monitor_debug_p = 0; | |
124 | ||
125 | /* NOTE: This file alternates between monitor_debug_p and remote_debug | |
b2fa5097 | 126 | when determining if debug information is printed. Perhaps this |
2df3850c JM |
127 | could be simplified. */ |
128 | ||
129 | static void | |
130 | monitor_debug (const char *fmt, ...) | |
131 | { | |
132 | if (monitor_debug_p) | |
133 | { | |
134 | va_list args; | |
135 | va_start (args, fmt); | |
136 | vfprintf_filtered (gdb_stdlog, fmt, args); | |
137 | va_end (args); | |
138 | } | |
139 | } | |
140 | ||
141 | ||
142 | /* Convert a string into a printable representation, Return # byte in | |
143 | the new string. When LEN is >0 it specifies the size of the | |
144 | string. Otherwize strlen(oldstr) is used. */ | |
145 | ||
146 | static void | |
147 | monitor_printable_string (char *newstr, char *oldstr, int len) | |
c906108c | 148 | { |
c906108c | 149 | int ch; |
2df3850c JM |
150 | int i; |
151 | ||
152 | if (len <= 0) | |
153 | len = strlen (oldstr); | |
c906108c | 154 | |
2df3850c | 155 | for (i = 0; i < len; i++) |
c906108c | 156 | { |
2df3850c | 157 | ch = oldstr[i]; |
c906108c | 158 | switch (ch) |
c5aa993b | 159 | { |
c906108c SS |
160 | default: |
161 | if (isprint (ch)) | |
162 | *newstr++ = ch; | |
163 | ||
164 | else | |
165 | { | |
166 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
167 | newstr += 4; | |
168 | } | |
169 | break; | |
170 | ||
c5aa993b JM |
171 | case '\\': |
172 | *newstr++ = '\\'; | |
173 | *newstr++ = '\\'; | |
174 | break; | |
175 | case '\b': | |
176 | *newstr++ = '\\'; | |
177 | *newstr++ = 'b'; | |
178 | break; | |
179 | case '\f': | |
180 | *newstr++ = '\\'; | |
181 | *newstr++ = 't'; | |
182 | break; | |
183 | case '\n': | |
184 | *newstr++ = '\\'; | |
185 | *newstr++ = 'n'; | |
186 | break; | |
187 | case '\r': | |
188 | *newstr++ = '\\'; | |
189 | *newstr++ = 'r'; | |
190 | break; | |
191 | case '\t': | |
192 | *newstr++ = '\\'; | |
193 | *newstr++ = 't'; | |
194 | break; | |
195 | case '\v': | |
196 | *newstr++ = '\\'; | |
197 | *newstr++ = 'v'; | |
198 | break; | |
199 | } | |
c906108c SS |
200 | } |
201 | ||
202 | *newstr++ = '\0'; | |
c906108c SS |
203 | } |
204 | ||
205 | /* Print monitor errors with a string, converting the string to printable | |
206 | representation. */ | |
207 | ||
208 | static void | |
2df3850c JM |
209 | monitor_error (char *function, char *message, |
210 | CORE_ADDR memaddr, int len, char *string, int final_char) | |
c906108c | 211 | { |
c5aa993b | 212 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
c906108c | 213 | char *safe_string = alloca ((real_len * 4) + 1); |
2df3850c | 214 | monitor_printable_string (safe_string, string, real_len); |
c906108c SS |
215 | |
216 | if (final_char) | |
5af949e3 UW |
217 | error (_("%s (%s): %s: %s%c"), |
218 | function, paddress (target_gdbarch, memaddr), | |
219 | message, safe_string, final_char); | |
c906108c | 220 | else |
5af949e3 UW |
221 | error (_("%s (%s): %s: %s"), |
222 | function, paddress (target_gdbarch, memaddr), | |
223 | message, safe_string); | |
c906108c SS |
224 | } |
225 | ||
226 | /* Convert hex digit A to a number. */ | |
227 | ||
228 | static int | |
fba45db2 | 229 | fromhex (int a) |
c906108c SS |
230 | { |
231 | if (a >= '0' && a <= '9') | |
232 | return a - '0'; | |
233 | else if (a >= 'a' && a <= 'f') | |
234 | return a - 'a' + 10; | |
c5aa993b JM |
235 | else if (a >= 'A' && a <= 'F') |
236 | return a - 'A' + 10; | |
c906108c | 237 | else |
8a3fe4f8 | 238 | error (_("Invalid hex digit %d"), a); |
c906108c SS |
239 | } |
240 | ||
241 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
242 | ||
243 | This function exists to get around the problem that many host platforms | |
244 | don't have a printf that can print 64-bit addresses. The %A format | |
245 | specification is recognized as a special case, and causes the argument | |
246 | to be printed as a 64-bit hexadecimal address. | |
247 | ||
248 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
249 | If it is a '%s' format, the argument is a string; otherwise the | |
250 | argument is assumed to be a long integer. | |
251 | ||
252 | %% is also turned into a single %. | |
c5aa993b JM |
253 | */ |
254 | ||
c906108c | 255 | static void |
fba45db2 | 256 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
c906108c | 257 | { |
5af949e3 | 258 | int addr_bit = gdbarch_addr_bit (target_gdbarch); |
c906108c SS |
259 | char format[10]; |
260 | char fmt; | |
261 | char *p; | |
262 | int i; | |
263 | long arg_int; | |
264 | CORE_ADDR arg_addr; | |
265 | char *arg_string; | |
266 | ||
267 | for (p = pattern; *p; p++) | |
268 | { | |
269 | if (*p == '%') | |
270 | { | |
271 | /* Copy the format specifier to a separate buffer. */ | |
272 | format[0] = *p++; | |
273 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
274 | i++, p++) | |
275 | format[i] = *p; | |
276 | format[i] = fmt = *p; | |
c5aa993b | 277 | format[i + 1] = '\0'; |
c906108c SS |
278 | |
279 | /* Fetch the next argument and print it. */ | |
280 | switch (fmt) | |
281 | { | |
282 | case '%': | |
283 | strcpy (sndbuf, "%"); | |
284 | break; | |
285 | case 'A': | |
286 | arg_addr = va_arg (args, CORE_ADDR); | |
5af949e3 | 287 | strcpy (sndbuf, phex_nz (arg_addr, addr_bit / 8)); |
c906108c SS |
288 | break; |
289 | case 's': | |
290 | arg_string = va_arg (args, char *); | |
291 | sprintf (sndbuf, format, arg_string); | |
292 | break; | |
293 | default: | |
294 | arg_int = va_arg (args, long); | |
295 | sprintf (sndbuf, format, arg_int); | |
296 | break; | |
297 | } | |
298 | sndbuf += strlen (sndbuf); | |
299 | } | |
300 | else | |
301 | *sndbuf++ = *p; | |
302 | } | |
303 | *sndbuf = '\0'; | |
304 | } | |
305 | ||
306 | ||
307 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
308 | Works just like printf. */ | |
309 | ||
310 | void | |
c5aa993b | 311 | monitor_printf_noecho (char *pattern,...) |
c906108c SS |
312 | { |
313 | va_list args; | |
314 | char sndbuf[2000]; | |
315 | int len; | |
316 | ||
c906108c | 317 | va_start (args, pattern); |
c906108c SS |
318 | |
319 | monitor_vsprintf (sndbuf, pattern, args); | |
320 | ||
321 | len = strlen (sndbuf); | |
322 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 323 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 324 | |
2df3850c | 325 | if (monitor_debug_p) |
c906108c SS |
326 | { |
327 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
2df3850c JM |
328 | monitor_printable_string (safe_string, sndbuf, 0); |
329 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c | 330 | } |
c5aa993b | 331 | |
c906108c SS |
332 | monitor_write (sndbuf, len); |
333 | } | |
334 | ||
335 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
336 | printf. */ | |
337 | ||
338 | void | |
c5aa993b | 339 | monitor_printf (char *pattern,...) |
c906108c SS |
340 | { |
341 | va_list args; | |
342 | char sndbuf[2000]; | |
343 | int len; | |
344 | ||
c906108c | 345 | va_start (args, pattern); |
c906108c SS |
346 | |
347 | monitor_vsprintf (sndbuf, pattern, args); | |
348 | ||
349 | len = strlen (sndbuf); | |
350 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 351 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 352 | |
2df3850c | 353 | if (monitor_debug_p) |
c906108c SS |
354 | { |
355 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
2df3850c JM |
356 | monitor_printable_string (safe_string, sndbuf, 0); |
357 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c SS |
358 | } |
359 | ||
360 | monitor_write (sndbuf, len); | |
361 | ||
362 | /* We used to expect that the next immediate output was the characters we | |
363 | just output, but sometimes some extra junk appeared before the characters | |
364 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. | |
365 | So, just start searching for what we sent, and skip anything unknown. */ | |
2df3850c JM |
366 | monitor_debug ("ExpectEcho\n"); |
367 | monitor_expect (sndbuf, (char *) 0, 0); | |
c906108c SS |
368 | } |
369 | ||
370 | ||
371 | /* Write characters to the remote system. */ | |
372 | ||
373 | void | |
fba45db2 | 374 | monitor_write (char *buf, int buflen) |
c906108c | 375 | { |
2cd58942 AC |
376 | if (serial_write (monitor_desc, buf, buflen)) |
377 | fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", | |
c906108c SS |
378 | safe_strerror (errno)); |
379 | } | |
380 | ||
381 | ||
382 | /* Read a binary character from the remote system, doing all the fancy | |
383 | timeout stuff, but without interpreting the character in any way, | |
384 | and without printing remote debug information. */ | |
385 | ||
386 | int | |
fba45db2 | 387 | monitor_readchar (void) |
c906108c SS |
388 | { |
389 | int c; | |
390 | int looping; | |
391 | ||
392 | do | |
393 | { | |
394 | looping = 0; | |
2cd58942 | 395 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
396 | |
397 | if (c >= 0) | |
c5aa993b | 398 | c &= 0xff; /* don't lose bit 7 */ |
c906108c SS |
399 | } |
400 | while (looping); | |
401 | ||
402 | if (c >= 0) | |
403 | return c; | |
404 | ||
405 | if (c == SERIAL_TIMEOUT) | |
8a3fe4f8 | 406 | error (_("Timeout reading from remote system.")); |
c906108c | 407 | |
e2e0b3e5 | 408 | perror_with_name (_("remote-monitor")); |
c906108c SS |
409 | } |
410 | ||
411 | ||
412 | /* Read a character from the remote system, doing all the fancy | |
413 | timeout stuff. */ | |
414 | ||
415 | static int | |
fba45db2 | 416 | readchar (int timeout) |
c906108c SS |
417 | { |
418 | int c; | |
c5aa993b JM |
419 | static enum |
420 | { | |
421 | last_random, last_nl, last_cr, last_crnl | |
422 | } | |
423 | state = last_random; | |
c906108c SS |
424 | int looping; |
425 | ||
426 | do | |
427 | { | |
428 | looping = 0; | |
2cd58942 | 429 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
430 | |
431 | if (c >= 0) | |
432 | { | |
433 | c &= 0x7f; | |
c906108c SS |
434 | /* This seems to interfere with proper function of the |
435 | input stream */ | |
2df3850c | 436 | if (monitor_debug_p || remote_debug) |
c906108c SS |
437 | { |
438 | char buf[2]; | |
439 | buf[0] = c; | |
440 | buf[1] = '\0'; | |
441 | puts_debug ("read -->", buf, "<--"); | |
442 | } | |
c5aa993b | 443 | |
c906108c SS |
444 | } |
445 | ||
446 | /* Canonicialize \n\r combinations into one \r */ | |
447 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) | |
448 | { | |
449 | if ((c == '\r' && state == last_nl) | |
450 | || (c == '\n' && state == last_cr)) | |
451 | { | |
452 | state = last_crnl; | |
453 | looping = 1; | |
454 | } | |
455 | else if (c == '\r') | |
456 | state = last_cr; | |
457 | else if (c != '\n') | |
458 | state = last_random; | |
459 | else | |
460 | { | |
461 | state = last_nl; | |
462 | c = '\r'; | |
463 | } | |
464 | } | |
465 | } | |
466 | while (looping); | |
467 | ||
468 | if (c >= 0) | |
469 | return c; | |
470 | ||
471 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 472 | #if 0 |
c906108c SS |
473 | /* I fail to see how detaching here can be useful */ |
474 | if (in_monitor_wait) /* Watchdog went off */ | |
475 | { | |
476 | target_mourn_inferior (); | |
8a3fe4f8 | 477 | error (_("GDB serial timeout has expired. Target detached.")); |
c906108c SS |
478 | } |
479 | else | |
480 | #endif | |
8a3fe4f8 | 481 | error (_("Timeout reading from remote system.")); |
c906108c | 482 | |
e2e0b3e5 | 483 | perror_with_name (_("remote-monitor")); |
c906108c SS |
484 | } |
485 | ||
486 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
487 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
488 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
489 | because STRING can't be found, return -1, else return number of chars in BUF | |
490 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
491 | will be at the end of BUF. */ | |
492 | ||
493 | int | |
fba45db2 | 494 | monitor_expect (char *string, char *buf, int buflen) |
c906108c SS |
495 | { |
496 | char *p = string; | |
497 | int obuflen = buflen; | |
498 | int c; | |
c906108c | 499 | |
2df3850c | 500 | if (monitor_debug_p) |
c906108c SS |
501 | { |
502 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
2df3850c JM |
503 | monitor_printable_string (safe_string, string, 0); |
504 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); | |
c906108c SS |
505 | } |
506 | ||
8edbea78 | 507 | immediate_quit++; |
c906108c SS |
508 | while (1) |
509 | { | |
510 | if (buf) | |
511 | { | |
512 | if (buflen < 2) | |
513 | { | |
514 | *buf = '\000'; | |
8edbea78 | 515 | immediate_quit--; |
c906108c SS |
516 | return -1; |
517 | } | |
518 | ||
519 | c = readchar (timeout); | |
520 | if (c == '\000') | |
521 | continue; | |
522 | *buf++ = c; | |
523 | buflen--; | |
524 | } | |
525 | else | |
526 | c = readchar (timeout); | |
527 | ||
528 | /* Don't expect any ^C sent to be echoed */ | |
c5aa993b | 529 | |
c906108c SS |
530 | if (*p == '\003' || c == *p) |
531 | { | |
532 | p++; | |
533 | if (*p == '\0') | |
534 | { | |
8edbea78 | 535 | immediate_quit--; |
c906108c SS |
536 | |
537 | if (buf) | |
538 | { | |
539 | *buf++ = '\000'; | |
540 | return obuflen - buflen; | |
541 | } | |
542 | else | |
543 | return 0; | |
544 | } | |
545 | } | |
c906108c SS |
546 | else |
547 | { | |
a0b3c4fd JM |
548 | /* We got a character that doesn't match the string. We need to |
549 | back up p, but how far? If we're looking for "..howdy" and the | |
550 | monitor sends "...howdy"? There's certainly a match in there, | |
551 | but when we receive the third ".", we won't find it if we just | |
552 | restart the matching at the beginning of the string. | |
553 | ||
554 | This is a Boyer-Moore kind of situation. We want to reset P to | |
555 | the end of the longest prefix of STRING that is a suffix of | |
556 | what we've read so far. In the example above, that would be | |
557 | ".." --- the longest prefix of "..howdy" that is a suffix of | |
558 | "...". This longest prefix could be the empty string, if C | |
559 | is nowhere to be found in STRING. | |
560 | ||
561 | If this longest prefix is not the empty string, it must contain | |
562 | C, so let's search from the end of STRING for instances of C, | |
563 | and see if the portion of STRING before that is a suffix of | |
564 | what we read before C. Actually, we can search backwards from | |
565 | p, since we know no prefix can be longer than that. | |
566 | ||
567 | Note that we can use STRING itself, along with C, as a record | |
568 | of what we've received so far. :) */ | |
569 | int i; | |
570 | ||
571 | for (i = (p - string) - 1; i >= 0; i--) | |
572 | if (string[i] == c) | |
573 | { | |
574 | /* Is this prefix a suffix of what we've read so far? | |
575 | In other words, does | |
576 | string[0 .. i-1] == string[p - i, p - 1]? */ | |
577 | if (! memcmp (string, p - i, i)) | |
578 | { | |
579 | p = string + i + 1; | |
580 | break; | |
581 | } | |
582 | } | |
583 | if (i < 0) | |
584 | p = string; | |
c906108c SS |
585 | } |
586 | } | |
587 | } | |
588 | ||
589 | /* Search for a regexp. */ | |
590 | ||
591 | static int | |
fba45db2 | 592 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
c906108c SS |
593 | { |
594 | char *mybuf; | |
595 | char *p; | |
2df3850c | 596 | monitor_debug ("MON Expecting regexp\n"); |
c906108c SS |
597 | if (buf) |
598 | mybuf = buf; | |
599 | else | |
600 | { | |
d4f3574e SS |
601 | mybuf = alloca (TARGET_BUF_SIZE); |
602 | buflen = TARGET_BUF_SIZE; | |
c906108c SS |
603 | } |
604 | ||
605 | p = mybuf; | |
606 | while (1) | |
607 | { | |
608 | int retval; | |
609 | ||
610 | if (p - mybuf >= buflen) | |
611 | { /* Buffer about to overflow */ | |
612 | ||
613 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
614 | great, but it usually works... */ | |
615 | ||
616 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
617 | p = mybuf + buflen / 2; | |
618 | } | |
619 | ||
620 | *p++ = readchar (timeout); | |
621 | ||
622 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
623 | if (retval >= 0) | |
624 | return 1; | |
625 | } | |
626 | } | |
627 | ||
628 | /* Keep discarding input until we see the MONITOR prompt. | |
629 | ||
630 | The convention for dealing with the prompt is that you | |
631 | o give your command | |
632 | o *then* wait for the prompt. | |
633 | ||
634 | Thus the last thing that a procedure does with the serial line will | |
635 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
636 | wait for the prompt, because the terminal is being handed over to | |
637 | the inferior. However, the next thing which happens after that is | |
638 | a monitor_wait which does wait for the prompt. Note that this | |
639 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
640 | getting into states from which we can't recover. */ | |
641 | ||
642 | int | |
fba45db2 | 643 | monitor_expect_prompt (char *buf, int buflen) |
c906108c | 644 | { |
2df3850c JM |
645 | monitor_debug ("MON Expecting prompt\n"); |
646 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
c906108c SS |
647 | } |
648 | ||
649 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
650 | them in registers starting at REGNO. */ | |
651 | ||
652 | #if 0 | |
653 | static unsigned long | |
fba45db2 | 654 | get_hex_word (void) |
c906108c SS |
655 | { |
656 | unsigned long val; | |
657 | int i; | |
658 | int ch; | |
659 | ||
660 | do | |
661 | ch = readchar (timeout); | |
c5aa993b | 662 | while (isspace (ch)); |
c906108c SS |
663 | |
664 | val = from_hex (ch); | |
665 | ||
666 | for (i = 7; i >= 1; i--) | |
667 | { | |
668 | ch = readchar (timeout); | |
669 | if (!isxdigit (ch)) | |
670 | break; | |
671 | val = (val << 4) | from_hex (ch); | |
672 | } | |
673 | ||
674 | return val; | |
675 | } | |
676 | #endif | |
677 | ||
678 | static void | |
fba45db2 KB |
679 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
680 | char *fastmap) | |
c906108c SS |
681 | { |
682 | int tmp; | |
683 | const char *val; | |
684 | ||
685 | compiled_pattern->fastmap = fastmap; | |
686 | ||
687 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
688 | val = re_compile_pattern (pattern, | |
689 | strlen (pattern), | |
690 | compiled_pattern); | |
691 | re_set_syntax (tmp); | |
692 | ||
693 | if (val) | |
8a3fe4f8 | 694 | error (_("compile_pattern: Can't compile pattern string `%s': %s!"), pattern, val); |
c906108c SS |
695 | |
696 | if (fastmap) | |
697 | re_compile_fastmap (compiled_pattern); | |
698 | } | |
699 | ||
700 | /* Open a connection to a remote debugger. NAME is the filename used | |
701 | for communication. */ | |
702 | ||
703 | void | |
fba45db2 | 704 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
c906108c SS |
705 | { |
706 | char *name; | |
707 | char **p; | |
6c95b8df | 708 | struct inferior *inf; |
c906108c SS |
709 | |
710 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
8a3fe4f8 | 711 | error (_("Magic number of monitor_ops struct wrong.")); |
c906108c SS |
712 | |
713 | targ_ops = mon_ops->target; | |
714 | name = targ_ops->to_shortname; | |
715 | ||
716 | if (!args) | |
8a3fe4f8 AC |
717 | error (_("Use `target %s DEVICE-NAME' to use a serial port, or \n\ |
718 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name); | |
c906108c SS |
719 | |
720 | target_preopen (from_tty); | |
721 | ||
722 | /* Setup pattern for register dump */ | |
723 | ||
724 | if (mon_ops->register_pattern) | |
725 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
726 | register_fastmap); | |
727 | ||
728 | if (mon_ops->getmem.resp_delim) | |
729 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
730 | getmem_resp_delim_fastmap); | |
731 | ||
1456ad8e AC |
732 | if (mon_ops->setmem.resp_delim) |
733 | compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern, | |
734 | setmem_resp_delim_fastmap); | |
735 | ||
736 | if (mon_ops->setreg.resp_delim) | |
737 | compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern, | |
738 | setreg_resp_delim_fastmap); | |
739 | ||
c906108c SS |
740 | unpush_target (targ_ops); |
741 | ||
742 | if (dev_name) | |
b8c9b27d | 743 | xfree (dev_name); |
4fcf66da | 744 | dev_name = xstrdup (args); |
c906108c | 745 | |
2cd58942 | 746 | monitor_desc = serial_open (dev_name); |
c906108c SS |
747 | |
748 | if (!monitor_desc) | |
749 | perror_with_name (dev_name); | |
750 | ||
751 | if (baud_rate != -1) | |
752 | { | |
2cd58942 | 753 | if (serial_setbaudrate (monitor_desc, baud_rate)) |
c906108c | 754 | { |
2cd58942 | 755 | serial_close (monitor_desc); |
c906108c SS |
756 | perror_with_name (dev_name); |
757 | } | |
758 | } | |
c5aa993b | 759 | |
2cd58942 | 760 | serial_raw (monitor_desc); |
c906108c | 761 | |
2cd58942 | 762 | serial_flush_input (monitor_desc); |
c906108c SS |
763 | |
764 | /* some systems only work with 2 stop bits */ | |
765 | ||
2cd58942 | 766 | serial_setstopbits (monitor_desc, mon_ops->stopbits); |
c906108c SS |
767 | |
768 | current_monitor = mon_ops; | |
769 | ||
770 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
771 | then send the init strings. Last, remove all breakpoints. */ | |
772 | ||
773 | if (current_monitor->stop) | |
774 | { | |
f9c72d52 | 775 | monitor_stop (inferior_ptid); |
c906108c | 776 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 777 | { |
2df3850c | 778 | monitor_debug ("EXP Open echo\n"); |
c5aa993b JM |
779 | monitor_expect_prompt (NULL, 0); |
780 | } | |
c906108c SS |
781 | } |
782 | ||
783 | /* wake up the monitor and see if it's alive */ | |
784 | for (p = mon_ops->init; *p != NULL; p++) | |
785 | { | |
786 | /* Some of the characters we send may not be echoed, | |
c5aa993b JM |
787 | but we hope to get a prompt at the end of it all. */ |
788 | ||
c906108c | 789 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 790 | monitor_printf (*p); |
c906108c | 791 | else |
c5aa993b | 792 | monitor_printf_noecho (*p); |
c906108c SS |
793 | monitor_expect_prompt (NULL, 0); |
794 | } | |
795 | ||
2cd58942 | 796 | serial_flush_input (monitor_desc); |
c906108c | 797 | |
9e086581 JM |
798 | /* Alloc breakpoints */ |
799 | if (mon_ops->set_break != NULL) | |
800 | { | |
801 | if (mon_ops->num_breakpoints == 0) | |
802 | mon_ops->num_breakpoints = 8; | |
803 | ||
804 | breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
805 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
806 | } | |
807 | ||
c906108c SS |
808 | /* Remove all breakpoints */ |
809 | ||
810 | if (mon_ops->clr_all_break) | |
811 | { | |
812 | monitor_printf (mon_ops->clr_all_break); | |
813 | monitor_expect_prompt (NULL, 0); | |
814 | } | |
815 | ||
816 | if (from_tty) | |
a3f17187 | 817 | printf_unfiltered (_("Remote target %s connected to %s\n"), name, dev_name); |
c906108c SS |
818 | |
819 | push_target (targ_ops); | |
820 | ||
c0a2216e PA |
821 | /* Start afresh. */ |
822 | init_thread_list (); | |
823 | ||
5e0b29c1 PA |
824 | /* Make run command think we are busy... */ |
825 | inferior_ptid = monitor_ptid; | |
6c95b8df PA |
826 | inf = current_inferior (); |
827 | inferior_appeared (inf, ptid_get_pid (inferior_ptid)); | |
5e0b29c1 | 828 | add_thread_silent (inferior_ptid); |
c906108c SS |
829 | |
830 | /* Give monitor_wait something to read */ | |
831 | ||
832 | monitor_printf (current_monitor->line_term); | |
833 | ||
8621d6a9 | 834 | start_remote (from_tty); |
c906108c SS |
835 | } |
836 | ||
837 | /* Close out all files and local state before this target loses | |
838 | control. */ | |
839 | ||
840 | void | |
fba45db2 | 841 | monitor_close (int quitting) |
c906108c SS |
842 | { |
843 | if (monitor_desc) | |
2cd58942 | 844 | serial_close (monitor_desc); |
9e086581 JM |
845 | |
846 | /* Free breakpoint memory */ | |
847 | if (breakaddr != NULL) | |
848 | { | |
b8c9b27d | 849 | xfree (breakaddr); |
9e086581 JM |
850 | breakaddr = NULL; |
851 | } | |
852 | ||
c906108c | 853 | monitor_desc = NULL; |
5e0b29c1 PA |
854 | |
855 | delete_thread_silent (monitor_ptid); | |
7f9f62ba | 856 | delete_inferior_silent (ptid_get_pid (monitor_ptid)); |
c906108c SS |
857 | } |
858 | ||
859 | /* Terminate the open connection to the remote debugger. Use this | |
860 | when you want to detach and do something else with your gdb. */ | |
861 | ||
862 | static void | |
136d6dae | 863 | monitor_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
864 | { |
865 | pop_target (); /* calls monitor_close to do the real work */ | |
866 | if (from_tty) | |
a3f17187 | 867 | printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname); |
c906108c SS |
868 | } |
869 | ||
870 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
871 | ||
872 | char * | |
c410a84c | 873 | monitor_supply_register (struct regcache *regcache, int regno, char *valstr) |
c906108c | 874 | { |
e17a4113 UW |
875 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
876 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
d4f3574e | 877 | ULONGEST val; |
123a958e | 878 | unsigned char regbuf[MAX_REGISTER_SIZE]; |
c906108c SS |
879 | char *p; |
880 | ||
4ce44c66 | 881 | val = 0; |
d4f3574e SS |
882 | p = valstr; |
883 | while (p && *p != '\0') | |
884 | { | |
885 | if (*p == '\r' || *p == '\n') | |
886 | { | |
887 | while (*p != '\0') | |
888 | p++; | |
889 | break; | |
890 | } | |
891 | if (isspace (*p)) | |
892 | { | |
893 | p++; | |
894 | continue; | |
895 | } | |
896 | if (!isxdigit (*p) && *p != 'x') | |
897 | { | |
898 | break; | |
899 | } | |
900 | ||
901 | val <<= 4; | |
902 | val += fromhex (*p++); | |
903 | } | |
2df3850c | 904 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
c906108c | 905 | |
1fcef334 | 906 | if (val == 0 && valstr == p) |
8a3fe4f8 | 907 | error (_("monitor_supply_register (%d): bad value from monitor: %s."), |
c906108c SS |
908 | regno, valstr); |
909 | ||
910 | /* supply register stores in target byte order, so swap here */ | |
911 | ||
e17a4113 | 912 | store_unsigned_integer (regbuf, register_size (gdbarch, regno), byte_order, |
9b072297 | 913 | val); |
c906108c | 914 | |
c410a84c | 915 | regcache_raw_supply (regcache, regno, regbuf); |
c906108c SS |
916 | |
917 | return p; | |
918 | } | |
919 | ||
920 | /* Tell the remote machine to resume. */ | |
921 | ||
c906108c | 922 | static void |
28439f5e PA |
923 | monitor_resume (struct target_ops *ops, |
924 | ptid_t ptid, int step, enum target_signal sig) | |
c906108c SS |
925 | { |
926 | /* Some monitors require a different command when starting a program */ | |
2df3850c | 927 | monitor_debug ("MON resume\n"); |
c906108c SS |
928 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
929 | { | |
930 | first_time = 0; | |
931 | monitor_printf ("run\r"); | |
932 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
c5aa993b | 933 | dump_reg_flag = 1; |
c906108c SS |
934 | return; |
935 | } | |
c906108c SS |
936 | if (step) |
937 | monitor_printf (current_monitor->step); | |
938 | else | |
939 | { | |
940 | if (current_monitor->continue_hook) | |
c5aa993b JM |
941 | (*current_monitor->continue_hook) (); |
942 | else | |
943 | monitor_printf (current_monitor->cont); | |
c906108c SS |
944 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
945 | dump_reg_flag = 1; | |
946 | } | |
947 | } | |
948 | ||
949 | /* Parse the output of a register dump command. A monitor specific | |
950 | regexp is used to extract individual register descriptions of the | |
951 | form REG=VAL. Each description is split up into a name and a value | |
952 | string which are passed down to monitor specific code. */ | |
953 | ||
954 | static void | |
c410a84c | 955 | parse_register_dump (struct regcache *regcache, char *buf, int len) |
c906108c | 956 | { |
2df3850c JM |
957 | monitor_debug ("MON Parsing register dump\n"); |
958 | while (1) | |
c906108c SS |
959 | { |
960 | int regnamelen, vallen; | |
961 | char *regname, *val; | |
962 | /* Element 0 points to start of register name, and element 1 | |
c5aa993b | 963 | points to the start of the register value. */ |
c906108c SS |
964 | struct re_registers register_strings; |
965 | ||
966 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
967 | ||
968 | if (re_search (®ister_pattern, buf, len, 0, len, | |
969 | ®ister_strings) == -1) | |
970 | break; | |
971 | ||
972 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
973 | regname = buf + register_strings.start[1]; | |
974 | vallen = register_strings.end[2] - register_strings.start[2]; | |
975 | val = buf + register_strings.start[2]; | |
976 | ||
c410a84c UW |
977 | current_monitor->supply_register (regcache, regname, regnamelen, |
978 | val, vallen); | |
c906108c SS |
979 | |
980 | buf += register_strings.end[0]; | |
981 | len -= register_strings.end[0]; | |
982 | } | |
983 | } | |
984 | ||
985 | /* Send ^C to target to halt it. Target will respond, and send us a | |
986 | packet. */ | |
987 | ||
988 | static void | |
fba45db2 | 989 | monitor_interrupt (int signo) |
c906108c SS |
990 | { |
991 | /* If this doesn't work, try more severe steps. */ | |
992 | signal (signo, monitor_interrupt_twice); | |
c5aa993b | 993 | |
2df3850c JM |
994 | if (monitor_debug_p || remote_debug) |
995 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); | |
c906108c | 996 | |
f9c72d52 | 997 | target_stop (inferior_ptid); |
c906108c SS |
998 | } |
999 | ||
1000 | /* The user typed ^C twice. */ | |
1001 | ||
1002 | static void | |
fba45db2 | 1003 | monitor_interrupt_twice (int signo) |
c906108c SS |
1004 | { |
1005 | signal (signo, ofunc); | |
c5aa993b | 1006 | |
c906108c SS |
1007 | monitor_interrupt_query (); |
1008 | ||
1009 | signal (signo, monitor_interrupt); | |
1010 | } | |
1011 | ||
1012 | /* Ask the user what to do when an interrupt is received. */ | |
1013 | ||
1014 | static void | |
fba45db2 | 1015 | monitor_interrupt_query (void) |
c906108c SS |
1016 | { |
1017 | target_terminal_ours (); | |
1018 | ||
9e2f0ad4 HZ |
1019 | if (query (_("Interrupted while waiting for the program.\n\ |
1020 | Give up (and stop debugging it)? "))) | |
c906108c SS |
1021 | { |
1022 | target_mourn_inferior (); | |
315a522e | 1023 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
1024 | } |
1025 | ||
1026 | target_terminal_inferior (); | |
1027 | } | |
1028 | ||
1029 | static void | |
fba45db2 | 1030 | monitor_wait_cleanup (void *old_timeout) |
c906108c | 1031 | { |
c5aa993b | 1032 | timeout = *(int *) old_timeout; |
c906108c SS |
1033 | signal (SIGINT, ofunc); |
1034 | in_monitor_wait = 0; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | ||
a78f21af | 1039 | static void |
c5aa993b JM |
1040 | monitor_wait_filter (char *buf, |
1041 | int bufmax, | |
1042 | int *ext_resp_len, | |
a78f21af | 1043 | struct target_waitstatus *status) |
c906108c | 1044 | { |
c5aa993b | 1045 | int resp_len; |
c906108c SS |
1046 | do |
1047 | { | |
1048 | resp_len = monitor_expect_prompt (buf, bufmax); | |
c5aa993b | 1049 | *ext_resp_len = resp_len; |
c906108c SS |
1050 | |
1051 | if (resp_len <= 0) | |
1052 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1053 | } | |
1054 | while (resp_len < 0); | |
1055 | ||
1056 | /* Print any output characters that were preceded by ^O. */ | |
1057 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1058 | if (monitor_debug_p || remote_debug |
1059 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1060 | { |
1061 | int i; | |
1062 | ||
1063 | for (i = 0; i < resp_len - 1; i++) | |
1064 | if (buf[i] == 0x0f) | |
1065 | putchar_unfiltered (buf[++i]); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | ||
1070 | ||
1071 | /* Wait until the remote machine stops, then return, storing status in | |
1072 | status just as `wait' would. */ | |
1073 | ||
39f77062 | 1074 | static ptid_t |
117de6a9 | 1075 | monitor_wait (struct target_ops *ops, |
47608cb1 | 1076 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c SS |
1077 | { |
1078 | int old_timeout = timeout; | |
d4f3574e | 1079 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1080 | int resp_len; |
1081 | struct cleanup *old_chain; | |
1082 | ||
1083 | status->kind = TARGET_WAITKIND_EXITED; | |
1084 | status->value.integer = 0; | |
1085 | ||
1086 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
2df3850c | 1087 | monitor_debug ("MON wait\n"); |
c906108c | 1088 | |
7a292a7a | 1089 | #if 0 |
c5aa993b JM |
1090 | /* This is somthing other than a maintenance command */ |
1091 | in_monitor_wait = 1; | |
c906108c SS |
1092 | timeout = watchdog > 0 ? watchdog : -1; |
1093 | #else | |
2df3850c | 1094 | timeout = -1; /* Don't time out -- user program is running. */ |
c906108c SS |
1095 | #endif |
1096 | ||
1097 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1098 | ||
1099 | if (current_monitor->wait_filter) | |
c5aa993b JM |
1100 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
1101 | else | |
1102 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); | |
1103 | ||
1104 | #if 0 /* Transferred to monitor wait filter */ | |
c906108c SS |
1105 | do |
1106 | { | |
1107 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1108 | ||
1109 | if (resp_len <= 0) | |
1110 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1111 | } | |
1112 | while (resp_len < 0); | |
1113 | ||
1114 | /* Print any output characters that were preceded by ^O. */ | |
1115 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1116 | if (monitor_debug_p || remote_debug |
1117 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1118 | { |
1119 | int i; | |
1120 | ||
1121 | for (i = 0; i < resp_len - 1; i++) | |
1122 | if (buf[i] == 0x0f) | |
1123 | putchar_unfiltered (buf[++i]); | |
1124 | } | |
c5aa993b | 1125 | #endif |
c906108c SS |
1126 | |
1127 | signal (SIGINT, ofunc); | |
1128 | ||
1129 | timeout = old_timeout; | |
1130 | #if 0 | |
1131 | if (dump_reg_flag && current_monitor->dump_registers) | |
1132 | { | |
1133 | dump_reg_flag = 0; | |
1134 | monitor_printf (current_monitor->dump_registers); | |
1135 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1136 | } | |
1137 | ||
1138 | if (current_monitor->register_pattern) | |
594f7785 | 1139 | parse_register_dump (get_current_regcache (), buf, resp_len); |
c906108c | 1140 | #else |
2df3850c | 1141 | monitor_debug ("Wait fetching registers after stop\n"); |
594f7785 | 1142 | monitor_dump_regs (get_current_regcache ()); |
c5aa993b | 1143 | #endif |
c906108c SS |
1144 | |
1145 | status->kind = TARGET_WAITKIND_STOPPED; | |
1146 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1147 | ||
1148 | discard_cleanups (old_chain); | |
1149 | ||
1150 | in_monitor_wait = 0; | |
1151 | ||
39f77062 | 1152 | return inferior_ptid; |
c906108c SS |
1153 | } |
1154 | ||
1155 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns | |
1156 | errno value. */ | |
1157 | ||
1158 | static void | |
56be3814 | 1159 | monitor_fetch_register (struct regcache *regcache, int regno) |
c906108c | 1160 | { |
444199e7 | 1161 | const char *name; |
86110418 MS |
1162 | char *zerobuf; |
1163 | char *regbuf; | |
c906108c SS |
1164 | int i; |
1165 | ||
d9d9c31f AC |
1166 | regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1); |
1167 | zerobuf = alloca (MAX_REGISTER_SIZE); | |
1168 | memset (zerobuf, 0, MAX_REGISTER_SIZE); | |
86110418 | 1169 | |
1c617db8 GS |
1170 | if (current_monitor->regname != NULL) |
1171 | name = current_monitor->regname (regno); | |
1172 | else | |
1173 | name = current_monitor->regnames[regno]; | |
2df3850c | 1174 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
c906108c | 1175 | |
2df3850c | 1176 | if (!name || (*name == '\0')) |
7a292a7a | 1177 | { |
2df3850c | 1178 | monitor_debug ("No register known for %d\n", regno); |
56be3814 | 1179 | regcache_raw_supply (regcache, regno, zerobuf); |
c906108c SS |
1180 | return; |
1181 | } | |
1182 | ||
1183 | /* send the register examine command */ | |
1184 | ||
1185 | monitor_printf (current_monitor->getreg.cmd, name); | |
1186 | ||
1187 | /* If RESP_DELIM is specified, we search for that as a leading | |
1188 | delimiter for the register value. Otherwise, we just start | |
1189 | searching from the start of the buf. */ | |
1190 | ||
1191 | if (current_monitor->getreg.resp_delim) | |
1192 | { | |
2df3850c JM |
1193 | monitor_debug ("EXP getreg.resp_delim\n"); |
1194 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
c906108c SS |
1195 | /* Handle case of first 32 registers listed in pairs. */ |
1196 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a | 1197 | && (regno & 1) != 0 && regno < 32) |
c5aa993b | 1198 | { |
2df3850c | 1199 | monitor_debug ("EXP getreg.resp_delim\n"); |
c906108c SS |
1200 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1201 | } | |
1202 | } | |
1203 | ||
1204 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ | |
c5aa993b | 1205 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1206 | { |
1207 | int c; | |
1208 | c = readchar (timeout); | |
1209 | while (c == ' ') | |
1210 | c = readchar (timeout); | |
1211 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1212 | ; | |
1213 | else | |
8a3fe4f8 | 1214 | error (_("Bad value returned from monitor while fetching register %x."), |
c5aa993b | 1215 | regno); |
c906108c SS |
1216 | } |
1217 | ||
1218 | /* Read upto the maximum number of hex digits for this register, skipping | |
1219 | spaces, but stop reading if something else is seen. Some monitors | |
1220 | like to drop leading zeros. */ | |
1221 | ||
9b072297 | 1222 | for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++) |
c906108c SS |
1223 | { |
1224 | int c; | |
1225 | c = readchar (timeout); | |
1226 | while (c == ' ') | |
1227 | c = readchar (timeout); | |
1228 | ||
1229 | if (!isxdigit (c)) | |
1230 | break; | |
1231 | ||
1232 | regbuf[i] = c; | |
1233 | } | |
1234 | ||
1235 | regbuf[i] = '\000'; /* terminate the number */ | |
2df3850c | 1236 | monitor_debug ("REGVAL '%s'\n", regbuf); |
c906108c SS |
1237 | |
1238 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1239 | is present), we will send TERM_CMD if that is present. In any | |
1240 | case, we collect all of the output into buf, and then wait for | |
1241 | the normal prompt. */ | |
1242 | ||
1243 | if (current_monitor->getreg.term) | |
1244 | { | |
2df3850c JM |
1245 | monitor_debug ("EXP getreg.term\n"); |
1246 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ | |
c906108c SS |
1247 | } |
1248 | ||
1249 | if (current_monitor->getreg.term_cmd) | |
c5aa993b | 1250 | { |
2df3850c JM |
1251 | monitor_debug ("EMIT getreg.term.cmd\n"); |
1252 | monitor_printf (current_monitor->getreg.term_cmd); | |
c906108c | 1253 | } |
c5aa993b JM |
1254 | if (!current_monitor->getreg.term || /* Already expected or */ |
1255 | current_monitor->getreg.term_cmd) /* ack expected */ | |
1256 | monitor_expect_prompt (NULL, 0); /* get response */ | |
c906108c | 1257 | |
56be3814 | 1258 | monitor_supply_register (regcache, regno, regbuf); |
c906108c SS |
1259 | } |
1260 | ||
1261 | /* Sometimes, it takes several commands to dump the registers */ | |
1262 | /* This is a primitive for use by variations of monitor interfaces in | |
1263 | case they need to compose the operation. | |
c5aa993b JM |
1264 | */ |
1265 | int | |
c410a84c | 1266 | monitor_dump_reg_block (struct regcache *regcache, char *block_cmd) |
c906108c | 1267 | { |
d4f3574e | 1268 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1269 | int resp_len; |
1270 | monitor_printf (block_cmd); | |
1271 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
c410a84c | 1272 | parse_register_dump (regcache, buf, resp_len); |
c5aa993b | 1273 | return 1; |
c906108c SS |
1274 | } |
1275 | ||
1276 | ||
1277 | /* Read the remote registers into the block regs. */ | |
1278 | /* Call the specific function if it has been provided */ | |
1279 | ||
1280 | static void | |
c410a84c | 1281 | monitor_dump_regs (struct regcache *regcache) |
c906108c | 1282 | { |
d4f3574e | 1283 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1284 | int resp_len; |
1285 | if (current_monitor->dumpregs) | |
c410a84c | 1286 | (*(current_monitor->dumpregs)) (regcache); /* call supplied function */ |
c5aa993b JM |
1287 | else if (current_monitor->dump_registers) /* default version */ |
1288 | { | |
1289 | monitor_printf (current_monitor->dump_registers); | |
c906108c | 1290 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
c410a84c | 1291 | parse_register_dump (regcache, buf, resp_len); |
c906108c SS |
1292 | } |
1293 | else | |
e2e0b3e5 | 1294 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); /* Need some way to read registers */ |
c906108c SS |
1295 | } |
1296 | ||
1297 | static void | |
28439f5e PA |
1298 | monitor_fetch_registers (struct target_ops *ops, |
1299 | struct regcache *regcache, int regno) | |
c906108c | 1300 | { |
2df3850c | 1301 | monitor_debug ("MON fetchregs\n"); |
c5aa993b | 1302 | if (current_monitor->getreg.cmd) |
c906108c SS |
1303 | { |
1304 | if (regno >= 0) | |
1305 | { | |
56be3814 | 1306 | monitor_fetch_register (regcache, regno); |
c906108c SS |
1307 | return; |
1308 | } | |
1309 | ||
9b072297 UW |
1310 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1311 | regno++) | |
56be3814 | 1312 | monitor_fetch_register (regcache, regno); |
c906108c | 1313 | } |
c5aa993b JM |
1314 | else |
1315 | { | |
56be3814 | 1316 | monitor_dump_regs (regcache); |
c5aa993b | 1317 | } |
c906108c SS |
1318 | } |
1319 | ||
1320 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1321 | ||
1322 | static void | |
56be3814 | 1323 | monitor_store_register (struct regcache *regcache, int regno) |
c906108c | 1324 | { |
5af949e3 | 1325 | int reg_size = register_size (get_regcache_arch (regcache), regno); |
444199e7 | 1326 | const char *name; |
d4f3574e | 1327 | ULONGEST val; |
1c617db8 GS |
1328 | |
1329 | if (current_monitor->regname != NULL) | |
1330 | name = current_monitor->regname (regno); | |
1331 | else | |
1332 | name = current_monitor->regnames[regno]; | |
1333 | ||
c906108c | 1334 | if (!name || (*name == '\0')) |
c5aa993b | 1335 | { |
2df3850c JM |
1336 | monitor_debug ("MON Cannot store unknown register\n"); |
1337 | return; | |
c906108c SS |
1338 | } |
1339 | ||
56be3814 | 1340 | regcache_cooked_read_unsigned (regcache, regno, &val); |
5af949e3 | 1341 | monitor_debug ("MON storeg %d %s\n", regno, phex (val, reg_size)); |
c906108c SS |
1342 | |
1343 | /* send the register deposit command */ | |
1344 | ||
2df3850c | 1345 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
c906108c SS |
1346 | monitor_printf (current_monitor->setreg.cmd, val, name); |
1347 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1348 | monitor_printf (current_monitor->setreg.cmd, name); | |
1349 | else | |
1350 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1351 | ||
1456ad8e AC |
1352 | if (current_monitor->setreg.resp_delim) |
1353 | { | |
1354 | monitor_debug ("EXP setreg.resp_delim\n"); | |
1355 | monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0); | |
1356 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
5af949e3 | 1357 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
1456ad8e | 1358 | } |
c906108c | 1359 | if (current_monitor->setreg.term) |
c5aa993b | 1360 | { |
2df3850c JM |
1361 | monitor_debug ("EXP setreg.term\n"); |
1362 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
c906108c | 1363 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
5af949e3 | 1364 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
c906108c SS |
1365 | monitor_expect_prompt (NULL, 0); |
1366 | } | |
1367 | else | |
1368 | monitor_expect_prompt (NULL, 0); | |
c5aa993b JM |
1369 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ |
1370 | { | |
2df3850c | 1371 | monitor_debug ("EXP setreg_termcmd\n"); |
c5aa993b JM |
1372 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
1373 | monitor_expect_prompt (NULL, 0); | |
c906108c | 1374 | } |
c5aa993b | 1375 | } /* monitor_store_register */ |
c906108c SS |
1376 | |
1377 | /* Store the remote registers. */ | |
1378 | ||
1379 | static void | |
28439f5e PA |
1380 | monitor_store_registers (struct target_ops *ops, |
1381 | struct regcache *regcache, int regno) | |
c906108c SS |
1382 | { |
1383 | if (regno >= 0) | |
1384 | { | |
56be3814 | 1385 | monitor_store_register (regcache, regno); |
c906108c SS |
1386 | return; |
1387 | } | |
1388 | ||
9b072297 UW |
1389 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1390 | regno++) | |
56be3814 | 1391 | monitor_store_register (regcache, regno); |
c906108c SS |
1392 | } |
1393 | ||
1394 | /* Get ready to modify the registers array. On machines which store | |
1395 | individual registers, this doesn't need to do anything. On machines | |
1396 | which store all the registers in one fell swoop, this makes sure | |
1397 | that registers contains all the registers from the program being | |
1398 | debugged. */ | |
1399 | ||
1400 | static void | |
316f2060 | 1401 | monitor_prepare_to_store (struct regcache *regcache) |
c906108c SS |
1402 | { |
1403 | /* Do nothing, since we can store individual regs */ | |
1404 | } | |
1405 | ||
1406 | static void | |
fba45db2 | 1407 | monitor_files_info (struct target_ops *ops) |
c906108c | 1408 | { |
a3f17187 | 1409 | printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate); |
c906108c SS |
1410 | } |
1411 | ||
1412 | static int | |
fba45db2 | 1413 | monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1414 | { |
e17a4113 | 1415 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
c5aa993b | 1416 | unsigned int val, hostval; |
c906108c SS |
1417 | char *cmd; |
1418 | int i; | |
1419 | ||
5af949e3 | 1420 | monitor_debug ("MON write %d %s\n", len, paddress (target_gdbarch, memaddr)); |
c906108c | 1421 | |
2df3850c | 1422 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
a97b0ac8 | 1423 | memaddr = gdbarch_addr_bits_remove (target_gdbarch, memaddr); |
c906108c SS |
1424 | |
1425 | /* Use memory fill command for leading 0 bytes. */ | |
1426 | ||
1427 | if (current_monitor->fill) | |
1428 | { | |
1429 | for (i = 0; i < len; i++) | |
1430 | if (myaddr[i] != 0) | |
1431 | break; | |
1432 | ||
1433 | if (i > 4) /* More than 4 zeros is worth doing */ | |
1434 | { | |
2df3850c JM |
1435 | monitor_debug ("MON FILL %d\n", i); |
1436 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
c5aa993b JM |
1437 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0); |
1438 | else | |
1439 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
c906108c SS |
1440 | |
1441 | monitor_expect_prompt (NULL, 0); | |
1442 | ||
1443 | return i; | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | #if 0 | |
1448 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1449 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1450 | { | |
1451 | len = 8; | |
1452 | cmd = current_monitor->setmem.cmdll; | |
1453 | } | |
1454 | else | |
1455 | #endif | |
1456 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1457 | { | |
1458 | len = 4; | |
1459 | cmd = current_monitor->setmem.cmdl; | |
1460 | } | |
1461 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1462 | { | |
1463 | len = 2; | |
1464 | cmd = current_monitor->setmem.cmdw; | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | len = 1; | |
1469 | cmd = current_monitor->setmem.cmdb; | |
1470 | } | |
1471 | ||
e17a4113 | 1472 | val = extract_unsigned_integer (myaddr, len, byte_order); |
c5aa993b | 1473 | |
c906108c | 1474 | if (len == 4) |
c5aa993b JM |
1475 | { |
1476 | hostval = *(unsigned int *) myaddr; | |
2df3850c | 1477 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
c906108c SS |
1478 | } |
1479 | ||
1480 | ||
1481 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1482 | monitor_printf_noecho (cmd, memaddr, val); | |
1483 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1484 | { | |
1485 | ||
1486 | monitor_printf_noecho (cmd, memaddr); | |
1487 | ||
1456ad8e AC |
1488 | if (current_monitor->setmem.resp_delim) |
1489 | { | |
1490 | monitor_debug ("EXP setmem.resp_delim"); | |
1491 | monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0); | |
1492 | monitor_printf ("%x\r", val); | |
1493 | } | |
c906108c | 1494 | if (current_monitor->setmem.term) |
c5aa993b | 1495 | { |
2df3850c | 1496 | monitor_debug ("EXP setmem.term"); |
c906108c SS |
1497 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
1498 | monitor_printf ("%x\r", val); | |
1499 | } | |
1500 | if (current_monitor->setmem.term_cmd) | |
c5aa993b JM |
1501 | { /* Emit this to get out of the memory editing state */ |
1502 | monitor_printf ("%s", current_monitor->setmem.term_cmd); | |
c906108c SS |
1503 | /* Drop through to expecting a prompt */ |
1504 | } | |
1505 | } | |
1506 | else | |
1507 | monitor_printf (cmd, memaddr, val); | |
1508 | ||
1509 | monitor_expect_prompt (NULL, 0); | |
1510 | ||
1511 | return len; | |
1512 | } | |
1513 | ||
1514 | ||
c5aa993b | 1515 | static int |
fba45db2 | 1516 | monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1517 | { |
c5aa993b JM |
1518 | unsigned char val; |
1519 | int written = 0; | |
1520 | if (len == 0) | |
1521 | return 0; | |
c906108c | 1522 | /* Enter the sub mode */ |
c5aa993b JM |
1523 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
1524 | monitor_expect_prompt (NULL, 0); | |
c906108c SS |
1525 | while (len) |
1526 | { | |
c5aa993b JM |
1527 | val = *myaddr; |
1528 | monitor_printf ("%x\r", val); | |
1529 | myaddr++; | |
1530 | memaddr++; | |
1531 | written++; | |
c906108c | 1532 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1533 | monitor_expect_prompt (NULL, 0); |
1534 | len--; | |
c906108c SS |
1535 | } |
1536 | /* Now exit the sub mode */ | |
1537 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1538 | monitor_expect_prompt (NULL, 0); |
1539 | return written; | |
c906108c SS |
1540 | } |
1541 | ||
1542 | ||
1543 | static void | |
c5aa993b | 1544 | longlongendswap (unsigned char *a) |
c906108c | 1545 | { |
c5aa993b JM |
1546 | int i, j; |
1547 | unsigned char x; | |
1548 | i = 0; | |
1549 | j = 7; | |
c906108c | 1550 | while (i < 4) |
c5aa993b JM |
1551 | { |
1552 | x = *(a + i); | |
1553 | *(a + i) = *(a + j); | |
1554 | *(a + j) = x; | |
1555 | i++, j--; | |
c906108c SS |
1556 | } |
1557 | } | |
1558 | /* Format 32 chars of long long value, advance the pointer */ | |
c5aa993b JM |
1559 | static char *hexlate = "0123456789abcdef"; |
1560 | static char * | |
1561 | longlong_hexchars (unsigned long long value, | |
1562 | char *outbuff) | |
c906108c | 1563 | { |
c5aa993b JM |
1564 | if (value == 0) |
1565 | { | |
1566 | *outbuff++ = '0'; | |
1567 | return outbuff; | |
1568 | } | |
c906108c | 1569 | else |
c5aa993b JM |
1570 | { |
1571 | static unsigned char disbuf[8]; /* disassembly buffer */ | |
1572 | unsigned char *scan, *limit; /* loop controls */ | |
1573 | unsigned char c, nib; | |
1574 | int leadzero = 1; | |
1575 | scan = disbuf; | |
1576 | limit = scan + 8; | |
1577 | { | |
1578 | unsigned long long *dp; | |
1579 | dp = (unsigned long long *) scan; | |
1580 | *dp = value; | |
c906108c | 1581 | } |
c5aa993b | 1582 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */ |
c906108c | 1583 | while (scan < limit) |
7a292a7a | 1584 | { |
c5aa993b | 1585 | c = *scan++; /* a byte of our long long value */ |
c906108c | 1586 | if (leadzero) |
7a292a7a SS |
1587 | { |
1588 | if (c == 0) | |
1589 | continue; | |
1590 | else | |
c5aa993b | 1591 | leadzero = 0; /* henceforth we print even zeroes */ |
7a292a7a | 1592 | } |
c5aa993b | 1593 | nib = c >> 4; /* high nibble bits */ |
7a292a7a | 1594 | *outbuff++ = hexlate[nib]; |
c5aa993b | 1595 | nib = c & 0x0f; /* low nibble bits */ |
7a292a7a | 1596 | *outbuff++ = hexlate[nib]; |
c906108c | 1597 | } |
c5aa993b | 1598 | return outbuff; |
c906108c | 1599 | } |
c5aa993b | 1600 | } /* longlong_hexchars */ |
c906108c SS |
1601 | |
1602 | ||
1603 | ||
1604 | /* I am only going to call this when writing virtual byte streams. | |
1605 | Which possably entails endian conversions | |
c5aa993b JM |
1606 | */ |
1607 | static int | |
fba45db2 | 1608 | monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1609 | { |
c5aa993b JM |
1610 | static char hexstage[20]; /* At least 16 digits required, plus null */ |
1611 | char *endstring; | |
1612 | long long *llptr; | |
1613 | long long value; | |
1614 | int written = 0; | |
1615 | llptr = (unsigned long long *) myaddr; | |
1616 | if (len == 0) | |
1617 | return 0; | |
1618 | monitor_printf (current_monitor->setmem.cmdll, memaddr); | |
1619 | monitor_expect_prompt (NULL, 0); | |
1620 | while (len >= 8) | |
1621 | { | |
1622 | value = *llptr; | |
1623 | endstring = longlong_hexchars (*llptr, hexstage); | |
1624 | *endstring = '\0'; /* NUll terminate for printf */ | |
1625 | monitor_printf ("%s\r", hexstage); | |
1626 | llptr++; | |
1627 | memaddr += 8; | |
1628 | written += 8; | |
c906108c | 1629 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1630 | monitor_expect_prompt (NULL, 0); |
1631 | len -= 8; | |
c906108c SS |
1632 | } |
1633 | /* Now exit the sub mode */ | |
1634 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1635 | monitor_expect_prompt (NULL, 0); |
1636 | return written; | |
1637 | } /* */ | |
c906108c SS |
1638 | |
1639 | ||
1640 | ||
1641 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1642 | /* This is for the large blocks of memory which may occur in downloading. | |
1643 | And for monitors which use interactive entry, | |
1644 | And for monitors which do not have other downloading methods. | |
1645 | Without this, we will end up calling monitor_write_memory many times | |
1646 | and do the entry and exit of the sub mode many times | |
1647 | This currently assumes... | |
c5aa993b JM |
1648 | MO_SETMEM_INTERACTIVE |
1649 | ! MO_NO_ECHO_ON_SETMEM | |
1650 | To use this, the you have to patch the monitor_cmds block with | |
1651 | this function. Otherwise, its not tuned up for use by all | |
1652 | monitor variations. | |
1653 | */ | |
c906108c | 1654 | |
c5aa993b | 1655 | static int |
fba45db2 | 1656 | monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1657 | { |
c5aa993b JM |
1658 | int written; |
1659 | written = 0; | |
c906108c | 1660 | /* FIXME: This would be a good place to put the zero test */ |
c5aa993b | 1661 | #if 1 |
c906108c | 1662 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
c5aa993b JM |
1663 | { |
1664 | return monitor_write_memory_longlongs (memaddr, myaddr, len); | |
1665 | } | |
c906108c | 1666 | #endif |
c5aa993b JM |
1667 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
1668 | return written; | |
c906108c SS |
1669 | } |
1670 | ||
1671 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1672 | which can only read a single byte/word/etc. at a time. */ | |
1673 | ||
1674 | static int | |
fba45db2 | 1675 | monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1676 | { |
e17a4113 | 1677 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
c906108c | 1678 | unsigned int val; |
c5aa993b | 1679 | char membuf[sizeof (int) * 2 + 1]; |
c906108c SS |
1680 | char *p; |
1681 | char *cmd; | |
c906108c | 1682 | |
2df3850c | 1683 | monitor_debug ("MON read single\n"); |
c906108c SS |
1684 | #if 0 |
1685 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1686 | call to strtoul below will fail if it tries to convert a value | |
1687 | that's too big to fit in a long. */ | |
1688 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1689 | { | |
1690 | len = 8; | |
1691 | cmd = current_monitor->getmem.cmdll; | |
1692 | } | |
1693 | else | |
1694 | #endif | |
1695 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1696 | { | |
1697 | len = 4; | |
1698 | cmd = current_monitor->getmem.cmdl; | |
1699 | } | |
1700 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1701 | { | |
1702 | len = 2; | |
1703 | cmd = current_monitor->getmem.cmdw; | |
1704 | } | |
1705 | else | |
1706 | { | |
1707 | len = 1; | |
1708 | cmd = current_monitor->getmem.cmdb; | |
1709 | } | |
1710 | ||
1711 | /* Send the examine command. */ | |
1712 | ||
1713 | monitor_printf (cmd, memaddr); | |
1714 | ||
1715 | /* If RESP_DELIM is specified, we search for that as a leading | |
1716 | delimiter for the memory value. Otherwise, we just start | |
1717 | searching from the start of the buf. */ | |
1718 | ||
1719 | if (current_monitor->getmem.resp_delim) | |
c5aa993b | 1720 | { |
2df3850c | 1721 | monitor_debug ("EXP getmem.resp_delim\n"); |
c906108c SS |
1722 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
1723 | } | |
1724 | ||
1725 | /* Now, read the appropriate number of hex digits for this loc, | |
1726 | skipping spaces. */ | |
1727 | ||
1728 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ | |
c5aa993b | 1729 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1730 | { |
1731 | int c; | |
1732 | ||
1733 | c = readchar (timeout); | |
1734 | while (c == ' ') | |
1735 | c = readchar (timeout); | |
1736 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1737 | ; | |
1738 | else | |
2df3850c JM |
1739 | monitor_error ("monitor_read_memory_single", |
1740 | "bad response from monitor", | |
93d56215 | 1741 | memaddr, 0, NULL, 0); |
c906108c | 1742 | } |
c906108c | 1743 | |
93d56215 AC |
1744 | { |
1745 | int i; | |
1746 | for (i = 0; i < len * 2; i++) | |
1747 | { | |
1748 | int c; | |
c906108c | 1749 | |
93d56215 AC |
1750 | while (1) |
1751 | { | |
1752 | c = readchar (timeout); | |
1753 | if (isxdigit (c)) | |
1754 | break; | |
1755 | if (c == ' ') | |
1756 | continue; | |
1757 | ||
1758 | monitor_error ("monitor_read_memory_single", | |
1759 | "bad response from monitor", | |
1760 | memaddr, i, membuf, 0); | |
1761 | } | |
c906108c SS |
1762 | membuf[i] = c; |
1763 | } | |
93d56215 AC |
1764 | membuf[i] = '\000'; /* terminate the number */ |
1765 | } | |
c906108c SS |
1766 | |
1767 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1768 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1769 | all of the output into buf, and then wait for the normal prompt. */ | |
1770 | ||
1771 | if (current_monitor->getmem.term) | |
1772 | { | |
c5aa993b | 1773 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ |
c906108c SS |
1774 | |
1775 | if (current_monitor->getmem.term_cmd) | |
1776 | { | |
1777 | monitor_printf (current_monitor->getmem.term_cmd); | |
1778 | monitor_expect_prompt (NULL, 0); | |
1779 | } | |
1780 | } | |
1781 | else | |
c5aa993b | 1782 | monitor_expect_prompt (NULL, 0); /* get response */ |
c906108c SS |
1783 | |
1784 | p = membuf; | |
1785 | val = strtoul (membuf, &p, 16); | |
1786 | ||
1787 | if (val == 0 && membuf == p) | |
2df3850c JM |
1788 | monitor_error ("monitor_read_memory_single", |
1789 | "bad value from monitor", | |
c906108c SS |
1790 | memaddr, 0, membuf, 0); |
1791 | ||
1792 | /* supply register stores in target byte order, so swap here */ | |
1793 | ||
e17a4113 | 1794 | store_unsigned_integer (myaddr, len, byte_order, val); |
c906108c SS |
1795 | |
1796 | return len; | |
1797 | } | |
1798 | ||
1799 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1800 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1801 | than 16 bytes at a time. */ | |
1802 | ||
1803 | static int | |
fba45db2 | 1804 | monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1805 | { |
1806 | unsigned int val; | |
1807 | char buf[512]; | |
1808 | char *p, *p1; | |
1809 | int resp_len; | |
1810 | int i; | |
1811 | CORE_ADDR dumpaddr; | |
1812 | ||
1813 | if (len <= 0) | |
1814 | { | |
2df3850c | 1815 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
c906108c SS |
1816 | return 0; |
1817 | } | |
1818 | ||
2df3850c | 1819 | monitor_debug ("MON read block ta(%s) ha(%lx) %d\n", |
5af949e3 | 1820 | paddress (target_gdbarch, memaddr), (long) myaddr, len); |
c906108c SS |
1821 | |
1822 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
a97b0ac8 | 1823 | memaddr = gdbarch_addr_bits_remove (target_gdbarch, memaddr); |
c906108c SS |
1824 | |
1825 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1826 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1827 | ||
1828 | len = min (len, 16); | |
1829 | ||
1830 | /* Some dumpers align the first data with the preceeding 16 | |
1831 | byte boundary. Some print blanks and start at the | |
1832 | requested boundary. EXACT_DUMPADDR | |
c5aa993b | 1833 | */ |
c906108c SS |
1834 | |
1835 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
c5aa993b | 1836 | ? memaddr : memaddr & ~0x0f; |
c906108c SS |
1837 | |
1838 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1839 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1840 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1841 | ||
1842 | /* send the memory examine command */ | |
1843 | ||
1844 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1845 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1846 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1847 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1848 | else | |
1849 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1850 | ||
1851 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1852 | is present), we will send TERM_CMD if that is present. In any | |
1853 | case, we collect all of the output into buf, and then wait for | |
1854 | the normal prompt. */ | |
1855 | ||
1856 | if (current_monitor->getmem.term) | |
1857 | { | |
c5aa993b | 1858 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ |
c906108c SS |
1859 | |
1860 | if (resp_len <= 0) | |
2df3850c JM |
1861 | monitor_error ("monitor_read_memory", |
1862 | "excessive response from monitor", | |
c906108c SS |
1863 | memaddr, resp_len, buf, 0); |
1864 | ||
1865 | if (current_monitor->getmem.term_cmd) | |
1866 | { | |
2cd58942 | 1867 | serial_write (monitor_desc, current_monitor->getmem.term_cmd, |
c906108c SS |
1868 | strlen (current_monitor->getmem.term_cmd)); |
1869 | monitor_expect_prompt (NULL, 0); | |
1870 | } | |
1871 | } | |
1872 | else | |
c5aa993b | 1873 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ |
c906108c SS |
1874 | |
1875 | p = buf; | |
1876 | ||
1877 | /* If RESP_DELIM is specified, we search for that as a leading | |
1878 | delimiter for the values. Otherwise, we just start searching | |
1879 | from the start of the buf. */ | |
1880 | ||
1881 | if (current_monitor->getmem.resp_delim) | |
1882 | { | |
1883 | int retval, tmp; | |
1884 | struct re_registers resp_strings; | |
2df3850c | 1885 | monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim); |
c906108c SS |
1886 | |
1887 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1888 | tmp = strlen (p); | |
1889 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1890 | &resp_strings); | |
1891 | ||
1892 | if (retval < 0) | |
2df3850c JM |
1893 | monitor_error ("monitor_read_memory", |
1894 | "bad response from monitor", | |
c906108c SS |
1895 | memaddr, resp_len, buf, 0); |
1896 | ||
1897 | p += resp_strings.end[0]; | |
1898 | #if 0 | |
1899 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1900 | if (!p) | |
2df3850c JM |
1901 | monitor_error ("monitor_read_memory", |
1902 | "bad response from monitor", | |
c906108c SS |
1903 | memaddr, resp_len, buf, 0); |
1904 | p += strlen (current_monitor->getmem.resp_delim); | |
1905 | #endif | |
1906 | } | |
2df3850c | 1907 | monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p); |
c906108c SS |
1908 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1909 | { | |
c5aa993b JM |
1910 | char c; |
1911 | int fetched = 0; | |
c906108c | 1912 | i = len; |
c5aa993b | 1913 | c = *p; |
c906108c | 1914 | |
c5aa993b JM |
1915 | |
1916 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1917 | { | |
1918 | if (isxdigit (c)) | |
1919 | { | |
1920 | if ((dumpaddr >= memaddr) && (i > 0)) | |
1921 | { | |
1922 | val = fromhex (c) * 16 + fromhex (*(p + 1)); | |
c906108c | 1923 | *myaddr++ = val; |
2df3850c JM |
1924 | if (monitor_debug_p || remote_debug) |
1925 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); | |
c906108c | 1926 | --i; |
c5aa993b | 1927 | fetched++; |
c906108c SS |
1928 | } |
1929 | ++dumpaddr; | |
1930 | ++p; | |
1931 | } | |
c5aa993b JM |
1932 | ++p; /* skip a blank or other non hex char */ |
1933 | c = *p; | |
c906108c | 1934 | } |
c5aa993b | 1935 | if (fetched == 0) |
8a3fe4f8 | 1936 | error (_("Failed to read via monitor")); |
2df3850c JM |
1937 | if (monitor_debug_p || remote_debug) |
1938 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
c5aa993b | 1939 | return fetched; /* Return the number of bytes actually read */ |
c906108c | 1940 | } |
2df3850c | 1941 | monitor_debug ("MON scanning bytes\n"); |
c906108c SS |
1942 | |
1943 | for (i = len; i > 0; i--) | |
1944 | { | |
1945 | /* Skip non-hex chars, but bomb on end of string and newlines */ | |
1946 | ||
1947 | while (1) | |
1948 | { | |
1949 | if (isxdigit (*p)) | |
1950 | break; | |
1951 | ||
1952 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
2df3850c JM |
1953 | monitor_error ("monitor_read_memory", |
1954 | "badly terminated response from monitor", | |
c906108c SS |
1955 | memaddr, resp_len, buf, 0); |
1956 | p++; | |
1957 | } | |
1958 | ||
1959 | val = strtoul (p, &p1, 16); | |
1960 | ||
1961 | if (val == 0 && p == p1) | |
2df3850c JM |
1962 | monitor_error ("monitor_read_memory", |
1963 | "bad value from monitor", | |
c906108c SS |
1964 | memaddr, resp_len, buf, 0); |
1965 | ||
1966 | *myaddr++ = val; | |
1967 | ||
1968 | if (i == 1) | |
1969 | break; | |
1970 | ||
1971 | p = p1; | |
1972 | } | |
1973 | ||
1974 | return len; | |
1975 | } | |
1976 | ||
0e7e8d51 KB |
1977 | /* Transfer LEN bytes between target address MEMADDR and GDB address |
1978 | MYADDR. Returns 0 for success, errno code for failure. TARGET is | |
1979 | unused. */ | |
1980 | ||
c906108c | 1981 | static int |
18cf8b5b | 1982 | monitor_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
0a65a603 | 1983 | struct mem_attrib *attrib, struct target_ops *target) |
c906108c | 1984 | { |
4930751a C |
1985 | int res; |
1986 | ||
1987 | if (write) | |
1988 | { | |
1989 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
1990 | res = monitor_write_memory_block(memaddr, myaddr, len); | |
1991 | else | |
1992 | res = monitor_write_memory(memaddr, myaddr, len); | |
1993 | } | |
1994 | else | |
1995 | { | |
1996 | res = monitor_read_memory(memaddr, myaddr, len); | |
1997 | } | |
1998 | ||
1999 | return res; | |
c906108c SS |
2000 | } |
2001 | ||
2002 | static void | |
7d85a9c0 | 2003 | monitor_kill (struct target_ops *ops) |
c906108c | 2004 | { |
c5aa993b | 2005 | return; /* ignore attempts to kill target system */ |
c906108c SS |
2006 | } |
2007 | ||
281b533b | 2008 | /* All we actually do is set the PC to the start address of exec_bfd. */ |
c906108c SS |
2009 | |
2010 | static void | |
136d6dae VP |
2011 | monitor_create_inferior (struct target_ops *ops, char *exec_file, |
2012 | char *args, char **env, int from_tty) | |
c906108c SS |
2013 | { |
2014 | if (args && (*args != '\000')) | |
8a3fe4f8 | 2015 | error (_("Args are not supported by the monitor.")); |
c906108c SS |
2016 | |
2017 | first_time = 1; | |
2018 | clear_proceed_status (); | |
fb14de7b UW |
2019 | regcache_write_pc (get_current_regcache (), |
2020 | bfd_get_start_address (exec_bfd)); | |
c906108c SS |
2021 | } |
2022 | ||
2023 | /* Clean up when a program exits. | |
2024 | The program actually lives on in the remote processor's RAM, and may be | |
2025 | run again without a download. Don't leave it full of breakpoint | |
2026 | instructions. */ | |
2027 | ||
2028 | static void | |
136d6dae | 2029 | monitor_mourn_inferior (struct target_ops *ops) |
c906108c SS |
2030 | { |
2031 | unpush_target (targ_ops); | |
2032 | generic_mourn_inferior (); /* Do all the proper things now */ | |
5e0b29c1 | 2033 | delete_thread_silent (monitor_ptid); |
c906108c SS |
2034 | } |
2035 | ||
c906108c SS |
2036 | /* Tell the monitor to add a breakpoint. */ |
2037 | ||
2038 | static int | |
a6d9a66e UW |
2039 | monitor_insert_breakpoint (struct gdbarch *gdbarch, |
2040 | struct bp_target_info *bp_tgt) | |
c906108c | 2041 | { |
8181d85f | 2042 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c | 2043 | int i; |
c906108c SS |
2044 | int bplen; |
2045 | ||
5af949e3 | 2046 | monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2047 | if (current_monitor->set_break == NULL) |
8a3fe4f8 | 2048 | error (_("No set_break defined for this monitor")); |
c906108c SS |
2049 | |
2050 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
a6d9a66e | 2051 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
c906108c SS |
2052 | |
2053 | /* Determine appropriate breakpoint size for this address. */ | |
a6d9a66e | 2054 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); |
8181d85f DJ |
2055 | bp_tgt->placed_address = addr; |
2056 | bp_tgt->placed_size = bplen; | |
c906108c | 2057 | |
9e086581 | 2058 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2059 | { |
2060 | if (breakaddr[i] == 0) | |
2061 | { | |
2062 | breakaddr[i] = addr; | |
c906108c SS |
2063 | monitor_printf (current_monitor->set_break, addr); |
2064 | monitor_expect_prompt (NULL, 0); | |
2065 | return 0; | |
2066 | } | |
2067 | } | |
2068 | ||
8a3fe4f8 | 2069 | error (_("Too many breakpoints (> %d) for monitor."), current_monitor->num_breakpoints); |
c906108c SS |
2070 | } |
2071 | ||
2072 | /* Tell the monitor to remove a breakpoint. */ | |
2073 | ||
2074 | static int | |
a6d9a66e UW |
2075 | monitor_remove_breakpoint (struct gdbarch *gdbarch, |
2076 | struct bp_target_info *bp_tgt) | |
c906108c | 2077 | { |
8181d85f | 2078 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c SS |
2079 | int i; |
2080 | ||
5af949e3 | 2081 | monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2082 | if (current_monitor->clr_break == NULL) |
8a3fe4f8 | 2083 | error (_("No clr_break defined for this monitor")); |
c906108c | 2084 | |
9e086581 | 2085 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2086 | { |
2087 | if (breakaddr[i] == addr) | |
2088 | { | |
2089 | breakaddr[i] = 0; | |
2090 | /* some monitors remove breakpoints based on the address */ | |
2091 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) | |
2092 | monitor_printf (current_monitor->clr_break, addr); | |
2093 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2094 | monitor_printf (current_monitor->clr_break, i + 1); | |
2095 | else | |
2096 | monitor_printf (current_monitor->clr_break, i); | |
2097 | monitor_expect_prompt (NULL, 0); | |
2098 | return 0; | |
2099 | } | |
2100 | } | |
2101 | fprintf_unfiltered (gdb_stderr, | |
5af949e3 UW |
2102 | "Can't find breakpoint associated with %s\n", |
2103 | paddress (gdbarch, addr)); | |
c906108c SS |
2104 | return 1; |
2105 | } | |
2106 | ||
2107 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2108 | an S-record. Return non-zero if the ACK is received properly. */ | |
2109 | ||
2110 | static int | |
fba45db2 | 2111 | monitor_wait_srec_ack (void) |
c906108c | 2112 | { |
d4f3574e | 2113 | int ch; |
c906108c SS |
2114 | |
2115 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2116 | { | |
2117 | return (readchar (timeout) == '+'); | |
2118 | } | |
2119 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2120 | { | |
2121 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2122 | if ((ch = readchar (1)) < 0) | |
2123 | return 0; | |
2124 | if ((ch = readchar (1)) < 0) | |
2125 | return 0; | |
2126 | if ((ch = readchar (1)) < 0) | |
2127 | return 0; | |
2128 | if ((ch = readchar (1)) < 0) | |
2129 | return 0; | |
2130 | } | |
2131 | return 1; | |
2132 | } | |
2133 | ||
2134 | /* monitor_load -- download a file. */ | |
2135 | ||
2136 | static void | |
fba45db2 | 2137 | monitor_load (char *file, int from_tty) |
c906108c | 2138 | { |
2df3850c | 2139 | monitor_debug ("MON load\n"); |
c906108c | 2140 | |
2df3850c | 2141 | if (current_monitor->load_routine) |
c906108c SS |
2142 | current_monitor->load_routine (monitor_desc, file, hashmark); |
2143 | else | |
2144 | { /* The default is ascii S-records */ | |
2145 | int n; | |
2146 | unsigned long load_offset; | |
2147 | char buf[128]; | |
2148 | ||
2149 | /* enable user to specify address for downloading as 2nd arg to load */ | |
2150 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); | |
2151 | if (n > 1) | |
2152 | file = buf; | |
2153 | else | |
2154 | load_offset = 0; | |
2155 | ||
2156 | monitor_printf (current_monitor->load); | |
2157 | if (current_monitor->loadresp) | |
2158 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
2159 | ||
2160 | load_srec (monitor_desc, file, (bfd_vma) load_offset, | |
2161 | 32, SREC_ALL, hashmark, | |
2162 | current_monitor->flags & MO_SREC_ACK ? | |
c5aa993b | 2163 | monitor_wait_srec_ack : NULL); |
c906108c SS |
2164 | |
2165 | monitor_expect_prompt (NULL, 0); | |
2166 | } | |
2167 | ||
fe490085 | 2168 | /* Finally, make the PC point at the start address */ |
c906108c | 2169 | if (exec_bfd) |
fb14de7b UW |
2170 | regcache_write_pc (get_current_regcache (), |
2171 | bfd_get_start_address (exec_bfd)); | |
c906108c | 2172 | |
e8816aac JB |
2173 | /* There used to be code here which would clear inferior_ptid and |
2174 | call clear_symtab_users. None of that should be necessary: | |
2175 | monitor targets should behave like remote protocol targets, and | |
2176 | since generic_load does none of those things, this function | |
2177 | shouldn't either. | |
2178 | ||
2179 | Furthermore, clearing inferior_ptid is *incorrect*. After doing | |
2180 | a load, we still have a valid connection to the monitor, with a | |
2181 | live processor state to fiddle with. The user can type | |
2182 | `continue' or `jump *start' and make the program run. If they do | |
2183 | these things, however, GDB will be talking to a running program | |
2184 | while inferior_ptid is null_ptid; this makes things like | |
2185 | reinit_frame_cache very confused. */ | |
c906108c SS |
2186 | } |
2187 | ||
2188 | static void | |
f9c72d52 | 2189 | monitor_stop (ptid_t ptid) |
c906108c | 2190 | { |
2df3850c | 2191 | monitor_debug ("MON stop\n"); |
c906108c | 2192 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
2cd58942 | 2193 | serial_send_break (monitor_desc); |
c906108c SS |
2194 | if (current_monitor->stop) |
2195 | monitor_printf_noecho (current_monitor->stop); | |
2196 | } | |
2197 | ||
96baa820 JM |
2198 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
2199 | in OUTPUT until the prompt is seen. FIXME: We read the characters | |
2200 | ourseleves here cause of a nasty echo. */ | |
c906108c SS |
2201 | |
2202 | static void | |
96baa820 | 2203 | monitor_rcmd (char *command, |
d9fcf2fb | 2204 | struct ui_file *outbuf) |
c906108c SS |
2205 | { |
2206 | char *p; | |
2207 | int resp_len; | |
2208 | char buf[1000]; | |
2209 | ||
2210 | if (monitor_desc == NULL) | |
8a3fe4f8 | 2211 | error (_("monitor target not open.")); |
c906108c SS |
2212 | |
2213 | p = current_monitor->prompt; | |
2214 | ||
2215 | /* Send the command. Note that if no args were supplied, then we're | |
2216 | just sending the monitor a newline, which is sometimes useful. */ | |
2217 | ||
96baa820 | 2218 | monitor_printf ("%s\r", (command ? command : "")); |
c906108c SS |
2219 | |
2220 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2221 | ||
96baa820 | 2222 | fputs_unfiltered (buf, outbuf); /* Output the response */ |
c906108c SS |
2223 | } |
2224 | ||
2225 | /* Convert hex digit A to a number. */ | |
2226 | ||
2227 | #if 0 | |
2228 | static int | |
fba45db2 | 2229 | from_hex (int a) |
c5aa993b | 2230 | { |
c906108c SS |
2231 | if (a >= '0' && a <= '9') |
2232 | return a - '0'; | |
2233 | if (a >= 'a' && a <= 'f') | |
2234 | return a - 'a' + 10; | |
2235 | if (a >= 'A' && a <= 'F') | |
2236 | return a - 'A' + 10; | |
2237 | ||
8a3fe4f8 | 2238 | error (_("Reply contains invalid hex digit 0x%x"), a); |
c906108c SS |
2239 | } |
2240 | #endif | |
2241 | ||
2242 | char * | |
fba45db2 | 2243 | monitor_get_dev_name (void) |
c906108c SS |
2244 | { |
2245 | return dev_name; | |
2246 | } | |
2247 | ||
5e0b29c1 PA |
2248 | /* Check to see if a thread is still alive. */ |
2249 | ||
2250 | static int | |
28439f5e | 2251 | monitor_thread_alive (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2252 | { |
2253 | if (ptid_equal (ptid, monitor_ptid)) | |
2254 | /* The monitor's task is always alive. */ | |
2255 | return 1; | |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
2260 | /* Convert a thread ID to a string. Returns the string in a static | |
2261 | buffer. */ | |
2262 | ||
2263 | static char * | |
117de6a9 | 2264 | monitor_pid_to_str (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2265 | { |
2266 | static char buf[64]; | |
2267 | ||
2268 | if (ptid_equal (monitor_ptid, ptid)) | |
2269 | { | |
2270 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
2271 | return buf; | |
2272 | } | |
2273 | ||
2274 | return normal_pid_to_str (ptid); | |
2275 | } | |
2276 | ||
c906108c SS |
2277 | static struct target_ops monitor_ops; |
2278 | ||
2279 | static void | |
2280 | init_base_monitor_ops (void) | |
2281 | { | |
c906108c | 2282 | monitor_ops.to_close = monitor_close; |
c906108c | 2283 | monitor_ops.to_detach = monitor_detach; |
c906108c SS |
2284 | monitor_ops.to_resume = monitor_resume; |
2285 | monitor_ops.to_wait = monitor_wait; | |
c906108c SS |
2286 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
2287 | monitor_ops.to_store_registers = monitor_store_registers; | |
2288 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
c8e73a31 | 2289 | monitor_ops.deprecated_xfer_memory = monitor_xfer_memory; |
c906108c SS |
2290 | monitor_ops.to_files_info = monitor_files_info; |
2291 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2292 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
c906108c SS |
2293 | monitor_ops.to_kill = monitor_kill; |
2294 | monitor_ops.to_load = monitor_load; | |
c906108c | 2295 | monitor_ops.to_create_inferior = monitor_create_inferior; |
c906108c | 2296 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
c906108c | 2297 | monitor_ops.to_stop = monitor_stop; |
96baa820 | 2298 | monitor_ops.to_rcmd = monitor_rcmd; |
49d03eab | 2299 | monitor_ops.to_log_command = serial_log_command; |
5e0b29c1 PA |
2300 | monitor_ops.to_thread_alive = monitor_thread_alive; |
2301 | monitor_ops.to_pid_to_str = monitor_pid_to_str; | |
c906108c | 2302 | monitor_ops.to_stratum = process_stratum; |
c35b1492 PA |
2303 | monitor_ops.to_has_all_memory = default_child_has_all_memory; |
2304 | monitor_ops.to_has_memory = default_child_has_memory; | |
2305 | monitor_ops.to_has_stack = default_child_has_stack; | |
2306 | monitor_ops.to_has_registers = default_child_has_registers; | |
2307 | monitor_ops.to_has_execution = default_child_has_execution; | |
c906108c | 2308 | monitor_ops.to_magic = OPS_MAGIC; |
c5aa993b | 2309 | } /* init_base_monitor_ops */ |
c906108c SS |
2310 | |
2311 | /* Init the target_ops structure pointed at by OPS */ | |
2312 | ||
2313 | void | |
fba45db2 | 2314 | init_monitor_ops (struct target_ops *ops) |
c906108c SS |
2315 | { |
2316 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2317 | init_base_monitor_ops (); | |
2318 | ||
2319 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2320 | } | |
2321 | ||
2322 | /* Define additional commands that are usually only used by monitors. */ | |
2323 | ||
a78f21af AC |
2324 | extern initialize_file_ftype _initialize_remote_monitors; /* -Wmissing-prototypes */ |
2325 | ||
c906108c | 2326 | void |
fba45db2 | 2327 | _initialize_remote_monitors (void) |
c906108c SS |
2328 | { |
2329 | init_base_monitor_ops (); | |
5bf193a2 AC |
2330 | add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\ |
2331 | Set display of activity while downloading a file."), _("\ | |
2332 | Show display of activity while downloading a file."), _("\ | |
2333 | When enabled, a hashmark \'#\' is displayed."), | |
2334 | NULL, | |
2335 | NULL, /* FIXME: i18n: */ | |
2336 | &setlist, &showlist); | |
2df3850c | 2337 | |
85c07804 AC |
2338 | add_setshow_zinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\ |
2339 | Set debugging of remote monitor communication."), _("\ | |
2340 | Show debugging of remote monitor communication."), _("\ | |
2df3850c | 2341 | When enabled, communication between GDB and the remote monitor\n\ |
85c07804 AC |
2342 | is displayed."), |
2343 | NULL, | |
2344 | NULL, /* FIXME: i18n: */ | |
2345 | &setdebuglist, &showdebuglist); | |
5e0b29c1 PA |
2346 | |
2347 | /* Yes, 42000 is arbitrary. The only sense out of it, is that it | |
2348 | isn't 0. */ | |
2349 | monitor_ptid = ptid_build (42000, 0, 42000); | |
c906108c | 2350 | } |