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, |
4c38e0a4 JB |
4 | 2000, 2001, 2002, 2006, 2007, 2008, 2009, 2010 |
5 | Free Software Foundation, Inc. | |
0a65a603 | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
8 | Resurrected from the ashes by Stu Grossman. | |
9 | ||
c5aa993b | 10 | This file is part of GDB. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 14 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 15 | (at your option) any later version. |
c906108c | 16 | |
c5aa993b JM |
17 | This program is distributed in the hope that it will be useful, |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
c906108c | 21 | |
c5aa993b | 22 | You should have received a copy of the GNU General Public License |
a9762ec7 | 23 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
24 | |
25 | /* This file was derived from various remote-* modules. It is a collection | |
26 | of generic support functions so GDB can talk directly to a ROM based | |
27 | monitor. This saves use from having to hack an exception based handler | |
8e1a459b | 28 | into existence, and makes for quick porting. |
c906108c SS |
29 | |
30 | This module talks to a debug monitor called 'MONITOR', which | |
31 | We communicate with MONITOR via either a direct serial line, or a TCP | |
32 | (or possibly TELNET) stream to a terminal multiplexor, | |
33 | which in turn talks to the target board. */ | |
34 | ||
35 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
36 | most 32 bits long. If they can be larger, you will need to declare | |
37 | values as LONGEST and use %llx or some such to print values when | |
38 | building commands to send to the monitor. Since we don't know of | |
39 | any actual 64-bit targets with ROM monitors that use this code, | |
40 | it's not an issue right now. -sts 4/18/96 */ | |
41 | ||
42 | #include "defs.h" | |
43 | #include "gdbcore.h" | |
44 | #include "target.h" | |
60250e8b | 45 | #include "exceptions.h" |
c906108c SS |
46 | #include <signal.h> |
47 | #include <ctype.h> | |
48 | #include "gdb_string.h" | |
49 | #include <sys/types.h> | |
50 | #include "command.h" | |
51 | #include "serial.h" | |
52 | #include "monitor.h" | |
53 | #include "gdbcmd.h" | |
54 | #include "inferior.h" | |
88987551 | 55 | #include "gdb_regex.h" |
c906108c | 56 | #include "srec.h" |
4e052eda | 57 | #include "regcache.h" |
c0a2216e | 58 | #include "gdbthread.h" |
c906108c SS |
59 | |
60 | static char *dev_name; | |
61 | static struct target_ops *targ_ops; | |
62 | ||
a14ed312 | 63 | static void monitor_interrupt_query (void); |
08ae6d95 | 64 | static void monitor_interrupt_twice (int); |
f9c72d52 | 65 | static void monitor_stop (ptid_t); |
c410a84c | 66 | static void monitor_dump_regs (struct regcache *regcache); |
08ae6d95 | 67 | |
c906108c | 68 | #if 0 |
a14ed312 | 69 | static int from_hex (int a); |
c906108c | 70 | #endif |
c906108c SS |
71 | |
72 | static struct monitor_ops *current_monitor; | |
73 | ||
74 | static int hashmark; /* flag set by "set hash" */ | |
75 | ||
76 | static int timeout = 30; | |
77 | ||
78 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ | |
79 | ||
c5aa993b | 80 | static void (*ofunc) (); /* Old SIGINT signal handler */ |
c906108c | 81 | |
9e086581 JM |
82 | static CORE_ADDR *breakaddr; |
83 | ||
c906108c SS |
84 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
85 | that monitor_open knows that we don't have a file open when the | |
86 | program starts. */ | |
87 | ||
ba3a8523 | 88 | static struct serial *monitor_desc = NULL; |
c906108c SS |
89 | |
90 | /* Pointer to regexp pattern matching data */ | |
91 | ||
92 | static struct re_pattern_buffer register_pattern; | |
93 | static char register_fastmap[256]; | |
94 | ||
95 | static struct re_pattern_buffer getmem_resp_delim_pattern; | |
96 | static char getmem_resp_delim_fastmap[256]; | |
97 | ||
1456ad8e AC |
98 | static struct re_pattern_buffer setmem_resp_delim_pattern; |
99 | static char setmem_resp_delim_fastmap[256]; | |
100 | ||
101 | static struct re_pattern_buffer setreg_resp_delim_pattern; | |
102 | static char setreg_resp_delim_fastmap[256]; | |
103 | ||
c906108c SS |
104 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when |
105 | monitor_wait wakes up. */ | |
106 | ||
c5aa993b JM |
107 | static int first_time = 0; /* is this the first time we're executing after |
108 | gaving created the child proccess? */ | |
c906108c | 109 | |
5e0b29c1 PA |
110 | |
111 | /* This is the ptid we use while we're connected to a monitor. Its | |
112 | value is arbitrary, as monitor targets don't have a notion of | |
113 | processes or threads, but we need something non-null to place in | |
114 | inferior_ptid. */ | |
115 | static ptid_t monitor_ptid; | |
116 | ||
d4f3574e SS |
117 | #define TARGET_BUF_SIZE 2048 |
118 | ||
2df3850c JM |
119 | /* Monitor specific debugging information. Typically only useful to |
120 | the developer of a new monitor interface. */ | |
c906108c | 121 | |
2df3850c JM |
122 | static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2); |
123 | ||
124 | static int monitor_debug_p = 0; | |
125 | ||
126 | /* NOTE: This file alternates between monitor_debug_p and remote_debug | |
b2fa5097 | 127 | when determining if debug information is printed. Perhaps this |
2df3850c JM |
128 | could be simplified. */ |
129 | ||
130 | static void | |
131 | monitor_debug (const char *fmt, ...) | |
132 | { | |
133 | if (monitor_debug_p) | |
134 | { | |
135 | va_list args; | |
136 | va_start (args, fmt); | |
137 | vfprintf_filtered (gdb_stdlog, fmt, args); | |
138 | va_end (args); | |
139 | } | |
140 | } | |
141 | ||
142 | ||
143 | /* Convert a string into a printable representation, Return # byte in | |
144 | the new string. When LEN is >0 it specifies the size of the | |
145 | string. Otherwize strlen(oldstr) is used. */ | |
146 | ||
147 | static void | |
148 | monitor_printable_string (char *newstr, char *oldstr, int len) | |
c906108c | 149 | { |
c906108c | 150 | int ch; |
2df3850c JM |
151 | int i; |
152 | ||
153 | if (len <= 0) | |
154 | len = strlen (oldstr); | |
c906108c | 155 | |
2df3850c | 156 | for (i = 0; i < len; i++) |
c906108c | 157 | { |
2df3850c | 158 | ch = oldstr[i]; |
c906108c | 159 | switch (ch) |
c5aa993b | 160 | { |
c906108c SS |
161 | default: |
162 | if (isprint (ch)) | |
163 | *newstr++ = ch; | |
164 | ||
165 | else | |
166 | { | |
167 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
168 | newstr += 4; | |
169 | } | |
170 | break; | |
171 | ||
c5aa993b JM |
172 | case '\\': |
173 | *newstr++ = '\\'; | |
174 | *newstr++ = '\\'; | |
175 | break; | |
176 | case '\b': | |
177 | *newstr++ = '\\'; | |
178 | *newstr++ = 'b'; | |
179 | break; | |
180 | case '\f': | |
181 | *newstr++ = '\\'; | |
182 | *newstr++ = 't'; | |
183 | break; | |
184 | case '\n': | |
185 | *newstr++ = '\\'; | |
186 | *newstr++ = 'n'; | |
187 | break; | |
188 | case '\r': | |
189 | *newstr++ = '\\'; | |
190 | *newstr++ = 'r'; | |
191 | break; | |
192 | case '\t': | |
193 | *newstr++ = '\\'; | |
194 | *newstr++ = 't'; | |
195 | break; | |
196 | case '\v': | |
197 | *newstr++ = '\\'; | |
198 | *newstr++ = 'v'; | |
199 | break; | |
200 | } | |
c906108c SS |
201 | } |
202 | ||
203 | *newstr++ = '\0'; | |
c906108c SS |
204 | } |
205 | ||
206 | /* Print monitor errors with a string, converting the string to printable | |
207 | representation. */ | |
208 | ||
209 | static void | |
2df3850c JM |
210 | monitor_error (char *function, char *message, |
211 | CORE_ADDR memaddr, int len, char *string, int final_char) | |
c906108c | 212 | { |
c5aa993b | 213 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
c906108c | 214 | char *safe_string = alloca ((real_len * 4) + 1); |
2df3850c | 215 | monitor_printable_string (safe_string, string, real_len); |
c906108c SS |
216 | |
217 | if (final_char) | |
5af949e3 UW |
218 | error (_("%s (%s): %s: %s%c"), |
219 | function, paddress (target_gdbarch, memaddr), | |
220 | message, safe_string, final_char); | |
c906108c | 221 | else |
5af949e3 UW |
222 | error (_("%s (%s): %s: %s"), |
223 | function, paddress (target_gdbarch, memaddr), | |
224 | message, safe_string); | |
c906108c SS |
225 | } |
226 | ||
227 | /* Convert hex digit A to a number. */ | |
228 | ||
229 | static int | |
fba45db2 | 230 | fromhex (int a) |
c906108c SS |
231 | { |
232 | if (a >= '0' && a <= '9') | |
233 | return a - '0'; | |
234 | else if (a >= 'a' && a <= 'f') | |
235 | return a - 'a' + 10; | |
c5aa993b JM |
236 | else if (a >= 'A' && a <= 'F') |
237 | return a - 'A' + 10; | |
c906108c | 238 | else |
8a3fe4f8 | 239 | error (_("Invalid hex digit %d"), a); |
c906108c SS |
240 | } |
241 | ||
242 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
243 | ||
244 | This function exists to get around the problem that many host platforms | |
245 | don't have a printf that can print 64-bit addresses. The %A format | |
246 | specification is recognized as a special case, and causes the argument | |
247 | to be printed as a 64-bit hexadecimal address. | |
248 | ||
249 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
250 | If it is a '%s' format, the argument is a string; otherwise the | |
251 | argument is assumed to be a long integer. | |
252 | ||
253 | %% is also turned into a single %. | |
c5aa993b JM |
254 | */ |
255 | ||
c906108c | 256 | static void |
fba45db2 | 257 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
c906108c | 258 | { |
5af949e3 | 259 | int addr_bit = gdbarch_addr_bit (target_gdbarch); |
c906108c SS |
260 | char format[10]; |
261 | char fmt; | |
262 | char *p; | |
263 | int i; | |
264 | long arg_int; | |
265 | CORE_ADDR arg_addr; | |
266 | char *arg_string; | |
267 | ||
268 | for (p = pattern; *p; p++) | |
269 | { | |
270 | if (*p == '%') | |
271 | { | |
272 | /* Copy the format specifier to a separate buffer. */ | |
273 | format[0] = *p++; | |
274 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
275 | i++, p++) | |
276 | format[i] = *p; | |
277 | format[i] = fmt = *p; | |
c5aa993b | 278 | format[i + 1] = '\0'; |
c906108c SS |
279 | |
280 | /* Fetch the next argument and print it. */ | |
281 | switch (fmt) | |
282 | { | |
283 | case '%': | |
284 | strcpy (sndbuf, "%"); | |
285 | break; | |
286 | case 'A': | |
287 | arg_addr = va_arg (args, CORE_ADDR); | |
5af949e3 | 288 | strcpy (sndbuf, phex_nz (arg_addr, addr_bit / 8)); |
c906108c SS |
289 | break; |
290 | case 's': | |
291 | arg_string = va_arg (args, char *); | |
292 | sprintf (sndbuf, format, arg_string); | |
293 | break; | |
294 | default: | |
295 | arg_int = va_arg (args, long); | |
296 | sprintf (sndbuf, format, arg_int); | |
297 | break; | |
298 | } | |
299 | sndbuf += strlen (sndbuf); | |
300 | } | |
301 | else | |
302 | *sndbuf++ = *p; | |
303 | } | |
304 | *sndbuf = '\0'; | |
305 | } | |
306 | ||
307 | ||
308 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
309 | Works just like printf. */ | |
310 | ||
311 | void | |
c5aa993b | 312 | monitor_printf_noecho (char *pattern,...) |
c906108c SS |
313 | { |
314 | va_list args; | |
315 | char sndbuf[2000]; | |
316 | int len; | |
317 | ||
c906108c | 318 | va_start (args, pattern); |
c906108c SS |
319 | |
320 | monitor_vsprintf (sndbuf, pattern, args); | |
321 | ||
322 | len = strlen (sndbuf); | |
323 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 324 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 325 | |
2df3850c | 326 | if (monitor_debug_p) |
c906108c SS |
327 | { |
328 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
2df3850c JM |
329 | monitor_printable_string (safe_string, sndbuf, 0); |
330 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c | 331 | } |
c5aa993b | 332 | |
c906108c SS |
333 | monitor_write (sndbuf, len); |
334 | } | |
335 | ||
336 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
337 | printf. */ | |
338 | ||
339 | void | |
c5aa993b | 340 | monitor_printf (char *pattern,...) |
c906108c SS |
341 | { |
342 | va_list args; | |
343 | char sndbuf[2000]; | |
344 | int len; | |
345 | ||
c906108c | 346 | va_start (args, pattern); |
c906108c SS |
347 | |
348 | monitor_vsprintf (sndbuf, pattern, args); | |
349 | ||
350 | len = strlen (sndbuf); | |
351 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 352 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 353 | |
2df3850c | 354 | if (monitor_debug_p) |
c906108c SS |
355 | { |
356 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
2df3850c JM |
357 | monitor_printable_string (safe_string, sndbuf, 0); |
358 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c SS |
359 | } |
360 | ||
361 | monitor_write (sndbuf, len); | |
362 | ||
363 | /* We used to expect that the next immediate output was the characters we | |
364 | just output, but sometimes some extra junk appeared before the characters | |
365 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. | |
366 | So, just start searching for what we sent, and skip anything unknown. */ | |
2df3850c JM |
367 | monitor_debug ("ExpectEcho\n"); |
368 | monitor_expect (sndbuf, (char *) 0, 0); | |
c906108c SS |
369 | } |
370 | ||
371 | ||
372 | /* Write characters to the remote system. */ | |
373 | ||
374 | void | |
fba45db2 | 375 | monitor_write (char *buf, int buflen) |
c906108c | 376 | { |
2cd58942 AC |
377 | if (serial_write (monitor_desc, buf, buflen)) |
378 | fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", | |
c906108c SS |
379 | safe_strerror (errno)); |
380 | } | |
381 | ||
382 | ||
383 | /* Read a binary character from the remote system, doing all the fancy | |
384 | timeout stuff, but without interpreting the character in any way, | |
385 | and without printing remote debug information. */ | |
386 | ||
387 | int | |
fba45db2 | 388 | monitor_readchar (void) |
c906108c SS |
389 | { |
390 | int c; | |
391 | int looping; | |
392 | ||
393 | do | |
394 | { | |
395 | looping = 0; | |
2cd58942 | 396 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
397 | |
398 | if (c >= 0) | |
c5aa993b | 399 | c &= 0xff; /* don't lose bit 7 */ |
c906108c SS |
400 | } |
401 | while (looping); | |
402 | ||
403 | if (c >= 0) | |
404 | return c; | |
405 | ||
406 | if (c == SERIAL_TIMEOUT) | |
8a3fe4f8 | 407 | error (_("Timeout reading from remote system.")); |
c906108c | 408 | |
e2e0b3e5 | 409 | perror_with_name (_("remote-monitor")); |
c906108c SS |
410 | } |
411 | ||
412 | ||
413 | /* Read a character from the remote system, doing all the fancy | |
414 | timeout stuff. */ | |
415 | ||
416 | static int | |
fba45db2 | 417 | readchar (int timeout) |
c906108c SS |
418 | { |
419 | int c; | |
c5aa993b JM |
420 | static enum |
421 | { | |
422 | last_random, last_nl, last_cr, last_crnl | |
423 | } | |
424 | state = last_random; | |
c906108c SS |
425 | int looping; |
426 | ||
427 | do | |
428 | { | |
429 | looping = 0; | |
2cd58942 | 430 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
431 | |
432 | if (c >= 0) | |
433 | { | |
434 | c &= 0x7f; | |
c906108c SS |
435 | /* This seems to interfere with proper function of the |
436 | input stream */ | |
2df3850c | 437 | if (monitor_debug_p || remote_debug) |
c906108c SS |
438 | { |
439 | char buf[2]; | |
440 | buf[0] = c; | |
441 | buf[1] = '\0'; | |
442 | puts_debug ("read -->", buf, "<--"); | |
443 | } | |
c5aa993b | 444 | |
c906108c SS |
445 | } |
446 | ||
447 | /* Canonicialize \n\r combinations into one \r */ | |
448 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) | |
449 | { | |
450 | if ((c == '\r' && state == last_nl) | |
451 | || (c == '\n' && state == last_cr)) | |
452 | { | |
453 | state = last_crnl; | |
454 | looping = 1; | |
455 | } | |
456 | else if (c == '\r') | |
457 | state = last_cr; | |
458 | else if (c != '\n') | |
459 | state = last_random; | |
460 | else | |
461 | { | |
462 | state = last_nl; | |
463 | c = '\r'; | |
464 | } | |
465 | } | |
466 | } | |
467 | while (looping); | |
468 | ||
469 | if (c >= 0) | |
470 | return c; | |
471 | ||
472 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 473 | #if 0 |
c906108c SS |
474 | /* I fail to see how detaching here can be useful */ |
475 | if (in_monitor_wait) /* Watchdog went off */ | |
476 | { | |
477 | target_mourn_inferior (); | |
8a3fe4f8 | 478 | error (_("GDB serial timeout has expired. Target detached.")); |
c906108c SS |
479 | } |
480 | else | |
481 | #endif | |
8a3fe4f8 | 482 | error (_("Timeout reading from remote system.")); |
c906108c | 483 | |
e2e0b3e5 | 484 | perror_with_name (_("remote-monitor")); |
c906108c SS |
485 | } |
486 | ||
487 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
488 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
489 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
490 | because STRING can't be found, return -1, else return number of chars in BUF | |
491 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
492 | will be at the end of BUF. */ | |
493 | ||
494 | int | |
fba45db2 | 495 | monitor_expect (char *string, char *buf, int buflen) |
c906108c SS |
496 | { |
497 | char *p = string; | |
498 | int obuflen = buflen; | |
499 | int c; | |
c906108c | 500 | |
2df3850c | 501 | if (monitor_debug_p) |
c906108c SS |
502 | { |
503 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
2df3850c JM |
504 | monitor_printable_string (safe_string, string, 0); |
505 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); | |
c906108c SS |
506 | } |
507 | ||
8edbea78 | 508 | immediate_quit++; |
c906108c SS |
509 | while (1) |
510 | { | |
511 | if (buf) | |
512 | { | |
513 | if (buflen < 2) | |
514 | { | |
515 | *buf = '\000'; | |
8edbea78 | 516 | immediate_quit--; |
c906108c SS |
517 | return -1; |
518 | } | |
519 | ||
520 | c = readchar (timeout); | |
521 | if (c == '\000') | |
522 | continue; | |
523 | *buf++ = c; | |
524 | buflen--; | |
525 | } | |
526 | else | |
527 | c = readchar (timeout); | |
528 | ||
529 | /* Don't expect any ^C sent to be echoed */ | |
c5aa993b | 530 | |
c906108c SS |
531 | if (*p == '\003' || c == *p) |
532 | { | |
533 | p++; | |
534 | if (*p == '\0') | |
535 | { | |
8edbea78 | 536 | immediate_quit--; |
c906108c SS |
537 | |
538 | if (buf) | |
539 | { | |
540 | *buf++ = '\000'; | |
541 | return obuflen - buflen; | |
542 | } | |
543 | else | |
544 | return 0; | |
545 | } | |
546 | } | |
c906108c SS |
547 | else |
548 | { | |
a0b3c4fd JM |
549 | /* We got a character that doesn't match the string. We need to |
550 | back up p, but how far? If we're looking for "..howdy" and the | |
551 | monitor sends "...howdy"? There's certainly a match in there, | |
552 | but when we receive the third ".", we won't find it if we just | |
553 | restart the matching at the beginning of the string. | |
554 | ||
555 | This is a Boyer-Moore kind of situation. We want to reset P to | |
556 | the end of the longest prefix of STRING that is a suffix of | |
557 | what we've read so far. In the example above, that would be | |
558 | ".." --- the longest prefix of "..howdy" that is a suffix of | |
559 | "...". This longest prefix could be the empty string, if C | |
560 | is nowhere to be found in STRING. | |
561 | ||
562 | If this longest prefix is not the empty string, it must contain | |
563 | C, so let's search from the end of STRING for instances of C, | |
564 | and see if the portion of STRING before that is a suffix of | |
565 | what we read before C. Actually, we can search backwards from | |
566 | p, since we know no prefix can be longer than that. | |
567 | ||
568 | Note that we can use STRING itself, along with C, as a record | |
569 | of what we've received so far. :) */ | |
570 | int i; | |
571 | ||
572 | for (i = (p - string) - 1; i >= 0; i--) | |
573 | if (string[i] == c) | |
574 | { | |
575 | /* Is this prefix a suffix of what we've read so far? | |
576 | In other words, does | |
577 | string[0 .. i-1] == string[p - i, p - 1]? */ | |
578 | if (! memcmp (string, p - i, i)) | |
579 | { | |
580 | p = string + i + 1; | |
581 | break; | |
582 | } | |
583 | } | |
584 | if (i < 0) | |
585 | p = string; | |
c906108c SS |
586 | } |
587 | } | |
588 | } | |
589 | ||
590 | /* Search for a regexp. */ | |
591 | ||
592 | static int | |
fba45db2 | 593 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
c906108c SS |
594 | { |
595 | char *mybuf; | |
596 | char *p; | |
2df3850c | 597 | monitor_debug ("MON Expecting regexp\n"); |
c906108c SS |
598 | if (buf) |
599 | mybuf = buf; | |
600 | else | |
601 | { | |
d4f3574e SS |
602 | mybuf = alloca (TARGET_BUF_SIZE); |
603 | buflen = TARGET_BUF_SIZE; | |
c906108c SS |
604 | } |
605 | ||
606 | p = mybuf; | |
607 | while (1) | |
608 | { | |
609 | int retval; | |
610 | ||
611 | if (p - mybuf >= buflen) | |
612 | { /* Buffer about to overflow */ | |
613 | ||
614 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
615 | great, but it usually works... */ | |
616 | ||
617 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
618 | p = mybuf + buflen / 2; | |
619 | } | |
620 | ||
621 | *p++ = readchar (timeout); | |
622 | ||
623 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
624 | if (retval >= 0) | |
625 | return 1; | |
626 | } | |
627 | } | |
628 | ||
629 | /* Keep discarding input until we see the MONITOR prompt. | |
630 | ||
631 | The convention for dealing with the prompt is that you | |
632 | o give your command | |
633 | o *then* wait for the prompt. | |
634 | ||
635 | Thus the last thing that a procedure does with the serial line will | |
636 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
637 | wait for the prompt, because the terminal is being handed over to | |
638 | the inferior. However, the next thing which happens after that is | |
639 | a monitor_wait which does wait for the prompt. Note that this | |
640 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
641 | getting into states from which we can't recover. */ | |
642 | ||
643 | int | |
fba45db2 | 644 | monitor_expect_prompt (char *buf, int buflen) |
c906108c | 645 | { |
2df3850c JM |
646 | monitor_debug ("MON Expecting prompt\n"); |
647 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
c906108c SS |
648 | } |
649 | ||
650 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
651 | them in registers starting at REGNO. */ | |
652 | ||
653 | #if 0 | |
654 | static unsigned long | |
fba45db2 | 655 | get_hex_word (void) |
c906108c SS |
656 | { |
657 | unsigned long val; | |
658 | int i; | |
659 | int ch; | |
660 | ||
661 | do | |
662 | ch = readchar (timeout); | |
c5aa993b | 663 | while (isspace (ch)); |
c906108c SS |
664 | |
665 | val = from_hex (ch); | |
666 | ||
667 | for (i = 7; i >= 1; i--) | |
668 | { | |
669 | ch = readchar (timeout); | |
670 | if (!isxdigit (ch)) | |
671 | break; | |
672 | val = (val << 4) | from_hex (ch); | |
673 | } | |
674 | ||
675 | return val; | |
676 | } | |
677 | #endif | |
678 | ||
679 | static void | |
fba45db2 KB |
680 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
681 | char *fastmap) | |
c906108c SS |
682 | { |
683 | int tmp; | |
684 | const char *val; | |
685 | ||
686 | compiled_pattern->fastmap = fastmap; | |
687 | ||
688 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
689 | val = re_compile_pattern (pattern, | |
690 | strlen (pattern), | |
691 | compiled_pattern); | |
692 | re_set_syntax (tmp); | |
693 | ||
694 | if (val) | |
8a3fe4f8 | 695 | error (_("compile_pattern: Can't compile pattern string `%s': %s!"), pattern, val); |
c906108c SS |
696 | |
697 | if (fastmap) | |
698 | re_compile_fastmap (compiled_pattern); | |
699 | } | |
700 | ||
701 | /* Open a connection to a remote debugger. NAME is the filename used | |
702 | for communication. */ | |
703 | ||
704 | void | |
fba45db2 | 705 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
c906108c SS |
706 | { |
707 | char *name; | |
708 | char **p; | |
6c95b8df | 709 | struct inferior *inf; |
c906108c SS |
710 | |
711 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
8a3fe4f8 | 712 | error (_("Magic number of monitor_ops struct wrong.")); |
c906108c SS |
713 | |
714 | targ_ops = mon_ops->target; | |
715 | name = targ_ops->to_shortname; | |
716 | ||
717 | if (!args) | |
8a3fe4f8 AC |
718 | error (_("Use `target %s DEVICE-NAME' to use a serial port, or \n\ |
719 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name); | |
c906108c SS |
720 | |
721 | target_preopen (from_tty); | |
722 | ||
723 | /* Setup pattern for register dump */ | |
724 | ||
725 | if (mon_ops->register_pattern) | |
726 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
727 | register_fastmap); | |
728 | ||
729 | if (mon_ops->getmem.resp_delim) | |
730 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
731 | getmem_resp_delim_fastmap); | |
732 | ||
1456ad8e AC |
733 | if (mon_ops->setmem.resp_delim) |
734 | compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern, | |
735 | setmem_resp_delim_fastmap); | |
736 | ||
737 | if (mon_ops->setreg.resp_delim) | |
738 | compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern, | |
739 | setreg_resp_delim_fastmap); | |
740 | ||
c906108c SS |
741 | unpush_target (targ_ops); |
742 | ||
743 | if (dev_name) | |
b8c9b27d | 744 | xfree (dev_name); |
4fcf66da | 745 | dev_name = xstrdup (args); |
c906108c | 746 | |
2cd58942 | 747 | monitor_desc = serial_open (dev_name); |
c906108c SS |
748 | |
749 | if (!monitor_desc) | |
750 | perror_with_name (dev_name); | |
751 | ||
752 | if (baud_rate != -1) | |
753 | { | |
2cd58942 | 754 | if (serial_setbaudrate (monitor_desc, baud_rate)) |
c906108c | 755 | { |
2cd58942 | 756 | serial_close (monitor_desc); |
c906108c SS |
757 | perror_with_name (dev_name); |
758 | } | |
759 | } | |
c5aa993b | 760 | |
2cd58942 | 761 | serial_raw (monitor_desc); |
c906108c | 762 | |
2cd58942 | 763 | serial_flush_input (monitor_desc); |
c906108c SS |
764 | |
765 | /* some systems only work with 2 stop bits */ | |
766 | ||
2cd58942 | 767 | serial_setstopbits (monitor_desc, mon_ops->stopbits); |
c906108c SS |
768 | |
769 | current_monitor = mon_ops; | |
770 | ||
771 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
772 | then send the init strings. Last, remove all breakpoints. */ | |
773 | ||
774 | if (current_monitor->stop) | |
775 | { | |
f9c72d52 | 776 | monitor_stop (inferior_ptid); |
c906108c | 777 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 778 | { |
2df3850c | 779 | monitor_debug ("EXP Open echo\n"); |
c5aa993b JM |
780 | monitor_expect_prompt (NULL, 0); |
781 | } | |
c906108c SS |
782 | } |
783 | ||
784 | /* wake up the monitor and see if it's alive */ | |
785 | for (p = mon_ops->init; *p != NULL; p++) | |
786 | { | |
787 | /* Some of the characters we send may not be echoed, | |
c5aa993b JM |
788 | but we hope to get a prompt at the end of it all. */ |
789 | ||
c906108c | 790 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 791 | monitor_printf (*p); |
c906108c | 792 | else |
c5aa993b | 793 | monitor_printf_noecho (*p); |
c906108c SS |
794 | monitor_expect_prompt (NULL, 0); |
795 | } | |
796 | ||
2cd58942 | 797 | serial_flush_input (monitor_desc); |
c906108c | 798 | |
9e086581 JM |
799 | /* Alloc breakpoints */ |
800 | if (mon_ops->set_break != NULL) | |
801 | { | |
802 | if (mon_ops->num_breakpoints == 0) | |
803 | mon_ops->num_breakpoints = 8; | |
804 | ||
805 | breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
806 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
807 | } | |
808 | ||
c906108c SS |
809 | /* Remove all breakpoints */ |
810 | ||
811 | if (mon_ops->clr_all_break) | |
812 | { | |
813 | monitor_printf (mon_ops->clr_all_break); | |
814 | monitor_expect_prompt (NULL, 0); | |
815 | } | |
816 | ||
817 | if (from_tty) | |
a3f17187 | 818 | printf_unfiltered (_("Remote target %s connected to %s\n"), name, dev_name); |
c906108c SS |
819 | |
820 | push_target (targ_ops); | |
821 | ||
c0a2216e PA |
822 | /* Start afresh. */ |
823 | init_thread_list (); | |
824 | ||
5e0b29c1 PA |
825 | /* Make run command think we are busy... */ |
826 | inferior_ptid = monitor_ptid; | |
6c95b8df PA |
827 | inf = current_inferior (); |
828 | inferior_appeared (inf, ptid_get_pid (inferior_ptid)); | |
5e0b29c1 | 829 | add_thread_silent (inferior_ptid); |
c906108c SS |
830 | |
831 | /* Give monitor_wait something to read */ | |
832 | ||
833 | monitor_printf (current_monitor->line_term); | |
834 | ||
8621d6a9 | 835 | start_remote (from_tty); |
c906108c SS |
836 | } |
837 | ||
838 | /* Close out all files and local state before this target loses | |
839 | control. */ | |
840 | ||
841 | void | |
fba45db2 | 842 | monitor_close (int quitting) |
c906108c SS |
843 | { |
844 | if (monitor_desc) | |
2cd58942 | 845 | serial_close (monitor_desc); |
9e086581 JM |
846 | |
847 | /* Free breakpoint memory */ | |
848 | if (breakaddr != NULL) | |
849 | { | |
b8c9b27d | 850 | xfree (breakaddr); |
9e086581 JM |
851 | breakaddr = NULL; |
852 | } | |
853 | ||
c906108c | 854 | monitor_desc = NULL; |
5e0b29c1 PA |
855 | |
856 | delete_thread_silent (monitor_ptid); | |
7f9f62ba | 857 | delete_inferior_silent (ptid_get_pid (monitor_ptid)); |
c906108c SS |
858 | } |
859 | ||
860 | /* Terminate the open connection to the remote debugger. Use this | |
861 | when you want to detach and do something else with your gdb. */ | |
862 | ||
863 | static void | |
136d6dae | 864 | monitor_detach (struct target_ops *ops, char *args, int from_tty) |
c906108c SS |
865 | { |
866 | pop_target (); /* calls monitor_close to do the real work */ | |
867 | if (from_tty) | |
a3f17187 | 868 | printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname); |
c906108c SS |
869 | } |
870 | ||
871 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
872 | ||
873 | char * | |
c410a84c | 874 | monitor_supply_register (struct regcache *regcache, int regno, char *valstr) |
c906108c | 875 | { |
e17a4113 UW |
876 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
877 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
d4f3574e | 878 | ULONGEST val; |
123a958e | 879 | unsigned char regbuf[MAX_REGISTER_SIZE]; |
c906108c SS |
880 | char *p; |
881 | ||
4ce44c66 | 882 | val = 0; |
d4f3574e SS |
883 | p = valstr; |
884 | while (p && *p != '\0') | |
885 | { | |
886 | if (*p == '\r' || *p == '\n') | |
887 | { | |
888 | while (*p != '\0') | |
889 | p++; | |
890 | break; | |
891 | } | |
892 | if (isspace (*p)) | |
893 | { | |
894 | p++; | |
895 | continue; | |
896 | } | |
897 | if (!isxdigit (*p) && *p != 'x') | |
898 | { | |
899 | break; | |
900 | } | |
901 | ||
902 | val <<= 4; | |
903 | val += fromhex (*p++); | |
904 | } | |
2df3850c | 905 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
c906108c | 906 | |
1fcef334 | 907 | if (val == 0 && valstr == p) |
8a3fe4f8 | 908 | error (_("monitor_supply_register (%d): bad value from monitor: %s."), |
c906108c SS |
909 | regno, valstr); |
910 | ||
911 | /* supply register stores in target byte order, so swap here */ | |
912 | ||
e17a4113 | 913 | store_unsigned_integer (regbuf, register_size (gdbarch, regno), byte_order, |
9b072297 | 914 | val); |
c906108c | 915 | |
c410a84c | 916 | regcache_raw_supply (regcache, regno, regbuf); |
c906108c SS |
917 | |
918 | return p; | |
919 | } | |
920 | ||
921 | /* Tell the remote machine to resume. */ | |
922 | ||
c906108c | 923 | static void |
28439f5e PA |
924 | monitor_resume (struct target_ops *ops, |
925 | ptid_t ptid, int step, enum target_signal sig) | |
c906108c SS |
926 | { |
927 | /* Some monitors require a different command when starting a program */ | |
2df3850c | 928 | monitor_debug ("MON resume\n"); |
c906108c SS |
929 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
930 | { | |
931 | first_time = 0; | |
932 | monitor_printf ("run\r"); | |
933 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
c5aa993b | 934 | dump_reg_flag = 1; |
c906108c SS |
935 | return; |
936 | } | |
c906108c SS |
937 | if (step) |
938 | monitor_printf (current_monitor->step); | |
939 | else | |
940 | { | |
941 | if (current_monitor->continue_hook) | |
c5aa993b JM |
942 | (*current_monitor->continue_hook) (); |
943 | else | |
944 | monitor_printf (current_monitor->cont); | |
c906108c SS |
945 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
946 | dump_reg_flag = 1; | |
947 | } | |
948 | } | |
949 | ||
950 | /* Parse the output of a register dump command. A monitor specific | |
951 | regexp is used to extract individual register descriptions of the | |
952 | form REG=VAL. Each description is split up into a name and a value | |
953 | string which are passed down to monitor specific code. */ | |
954 | ||
955 | static void | |
c410a84c | 956 | parse_register_dump (struct regcache *regcache, char *buf, int len) |
c906108c | 957 | { |
2df3850c JM |
958 | monitor_debug ("MON Parsing register dump\n"); |
959 | while (1) | |
c906108c SS |
960 | { |
961 | int regnamelen, vallen; | |
962 | char *regname, *val; | |
963 | /* Element 0 points to start of register name, and element 1 | |
c5aa993b | 964 | points to the start of the register value. */ |
c906108c SS |
965 | struct re_registers register_strings; |
966 | ||
967 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
968 | ||
969 | if (re_search (®ister_pattern, buf, len, 0, len, | |
970 | ®ister_strings) == -1) | |
971 | break; | |
972 | ||
973 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
974 | regname = buf + register_strings.start[1]; | |
975 | vallen = register_strings.end[2] - register_strings.start[2]; | |
976 | val = buf + register_strings.start[2]; | |
977 | ||
c410a84c UW |
978 | current_monitor->supply_register (regcache, regname, regnamelen, |
979 | val, vallen); | |
c906108c SS |
980 | |
981 | buf += register_strings.end[0]; | |
982 | len -= register_strings.end[0]; | |
983 | } | |
984 | } | |
985 | ||
986 | /* Send ^C to target to halt it. Target will respond, and send us a | |
987 | packet. */ | |
988 | ||
989 | static void | |
fba45db2 | 990 | monitor_interrupt (int signo) |
c906108c SS |
991 | { |
992 | /* If this doesn't work, try more severe steps. */ | |
993 | signal (signo, monitor_interrupt_twice); | |
c5aa993b | 994 | |
2df3850c JM |
995 | if (monitor_debug_p || remote_debug) |
996 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); | |
c906108c | 997 | |
f9c72d52 | 998 | target_stop (inferior_ptid); |
c906108c SS |
999 | } |
1000 | ||
1001 | /* The user typed ^C twice. */ | |
1002 | ||
1003 | static void | |
fba45db2 | 1004 | monitor_interrupt_twice (int signo) |
c906108c SS |
1005 | { |
1006 | signal (signo, ofunc); | |
c5aa993b | 1007 | |
c906108c SS |
1008 | monitor_interrupt_query (); |
1009 | ||
1010 | signal (signo, monitor_interrupt); | |
1011 | } | |
1012 | ||
1013 | /* Ask the user what to do when an interrupt is received. */ | |
1014 | ||
1015 | static void | |
fba45db2 | 1016 | monitor_interrupt_query (void) |
c906108c SS |
1017 | { |
1018 | target_terminal_ours (); | |
1019 | ||
9e2f0ad4 HZ |
1020 | if (query (_("Interrupted while waiting for the program.\n\ |
1021 | Give up (and stop debugging it)? "))) | |
c906108c SS |
1022 | { |
1023 | target_mourn_inferior (); | |
315a522e | 1024 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
1025 | } |
1026 | ||
1027 | target_terminal_inferior (); | |
1028 | } | |
1029 | ||
1030 | static void | |
fba45db2 | 1031 | monitor_wait_cleanup (void *old_timeout) |
c906108c | 1032 | { |
c5aa993b | 1033 | timeout = *(int *) old_timeout; |
c906108c SS |
1034 | signal (SIGINT, ofunc); |
1035 | in_monitor_wait = 0; | |
1036 | } | |
1037 | ||
1038 | ||
1039 | ||
a78f21af | 1040 | static void |
c5aa993b JM |
1041 | monitor_wait_filter (char *buf, |
1042 | int bufmax, | |
1043 | int *ext_resp_len, | |
a78f21af | 1044 | struct target_waitstatus *status) |
c906108c | 1045 | { |
c5aa993b | 1046 | int resp_len; |
c906108c SS |
1047 | do |
1048 | { | |
1049 | resp_len = monitor_expect_prompt (buf, bufmax); | |
c5aa993b | 1050 | *ext_resp_len = resp_len; |
c906108c SS |
1051 | |
1052 | if (resp_len <= 0) | |
1053 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1054 | } | |
1055 | while (resp_len < 0); | |
1056 | ||
1057 | /* Print any output characters that were preceded by ^O. */ | |
1058 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1059 | if (monitor_debug_p || remote_debug |
1060 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1061 | { |
1062 | int i; | |
1063 | ||
1064 | for (i = 0; i < resp_len - 1; i++) | |
1065 | if (buf[i] == 0x0f) | |
1066 | putchar_unfiltered (buf[++i]); | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | ||
1071 | ||
1072 | /* Wait until the remote machine stops, then return, storing status in | |
1073 | status just as `wait' would. */ | |
1074 | ||
39f77062 | 1075 | static ptid_t |
117de6a9 | 1076 | monitor_wait (struct target_ops *ops, |
47608cb1 | 1077 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c SS |
1078 | { |
1079 | int old_timeout = timeout; | |
d4f3574e | 1080 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1081 | int resp_len; |
1082 | struct cleanup *old_chain; | |
1083 | ||
1084 | status->kind = TARGET_WAITKIND_EXITED; | |
1085 | status->value.integer = 0; | |
1086 | ||
1087 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
2df3850c | 1088 | monitor_debug ("MON wait\n"); |
c906108c | 1089 | |
7a292a7a | 1090 | #if 0 |
c5aa993b JM |
1091 | /* This is somthing other than a maintenance command */ |
1092 | in_monitor_wait = 1; | |
c906108c SS |
1093 | timeout = watchdog > 0 ? watchdog : -1; |
1094 | #else | |
2df3850c | 1095 | timeout = -1; /* Don't time out -- user program is running. */ |
c906108c SS |
1096 | #endif |
1097 | ||
1098 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1099 | ||
1100 | if (current_monitor->wait_filter) | |
c5aa993b JM |
1101 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
1102 | else | |
1103 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); | |
1104 | ||
1105 | #if 0 /* Transferred to monitor wait filter */ | |
c906108c SS |
1106 | do |
1107 | { | |
1108 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1109 | ||
1110 | if (resp_len <= 0) | |
1111 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1112 | } | |
1113 | while (resp_len < 0); | |
1114 | ||
1115 | /* Print any output characters that were preceded by ^O. */ | |
1116 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1117 | if (monitor_debug_p || remote_debug |
1118 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1119 | { |
1120 | int i; | |
1121 | ||
1122 | for (i = 0; i < resp_len - 1; i++) | |
1123 | if (buf[i] == 0x0f) | |
1124 | putchar_unfiltered (buf[++i]); | |
1125 | } | |
c5aa993b | 1126 | #endif |
c906108c SS |
1127 | |
1128 | signal (SIGINT, ofunc); | |
1129 | ||
1130 | timeout = old_timeout; | |
1131 | #if 0 | |
1132 | if (dump_reg_flag && current_monitor->dump_registers) | |
1133 | { | |
1134 | dump_reg_flag = 0; | |
1135 | monitor_printf (current_monitor->dump_registers); | |
1136 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1137 | } | |
1138 | ||
1139 | if (current_monitor->register_pattern) | |
594f7785 | 1140 | parse_register_dump (get_current_regcache (), buf, resp_len); |
c906108c | 1141 | #else |
2df3850c | 1142 | monitor_debug ("Wait fetching registers after stop\n"); |
594f7785 | 1143 | monitor_dump_regs (get_current_regcache ()); |
c5aa993b | 1144 | #endif |
c906108c SS |
1145 | |
1146 | status->kind = TARGET_WAITKIND_STOPPED; | |
1147 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1148 | ||
1149 | discard_cleanups (old_chain); | |
1150 | ||
1151 | in_monitor_wait = 0; | |
1152 | ||
39f77062 | 1153 | return inferior_ptid; |
c906108c SS |
1154 | } |
1155 | ||
1156 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns | |
1157 | errno value. */ | |
1158 | ||
1159 | static void | |
56be3814 | 1160 | monitor_fetch_register (struct regcache *regcache, int regno) |
c906108c | 1161 | { |
444199e7 | 1162 | const char *name; |
86110418 MS |
1163 | char *zerobuf; |
1164 | char *regbuf; | |
c906108c SS |
1165 | int i; |
1166 | ||
d9d9c31f AC |
1167 | regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1); |
1168 | zerobuf = alloca (MAX_REGISTER_SIZE); | |
1169 | memset (zerobuf, 0, MAX_REGISTER_SIZE); | |
86110418 | 1170 | |
1c617db8 GS |
1171 | if (current_monitor->regname != NULL) |
1172 | name = current_monitor->regname (regno); | |
1173 | else | |
1174 | name = current_monitor->regnames[regno]; | |
2df3850c | 1175 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
c906108c | 1176 | |
2df3850c | 1177 | if (!name || (*name == '\0')) |
7a292a7a | 1178 | { |
2df3850c | 1179 | monitor_debug ("No register known for %d\n", regno); |
56be3814 | 1180 | regcache_raw_supply (regcache, regno, zerobuf); |
c906108c SS |
1181 | return; |
1182 | } | |
1183 | ||
1184 | /* send the register examine command */ | |
1185 | ||
1186 | monitor_printf (current_monitor->getreg.cmd, name); | |
1187 | ||
1188 | /* If RESP_DELIM is specified, we search for that as a leading | |
1189 | delimiter for the register value. Otherwise, we just start | |
1190 | searching from the start of the buf. */ | |
1191 | ||
1192 | if (current_monitor->getreg.resp_delim) | |
1193 | { | |
2df3850c JM |
1194 | monitor_debug ("EXP getreg.resp_delim\n"); |
1195 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
c906108c SS |
1196 | /* Handle case of first 32 registers listed in pairs. */ |
1197 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a | 1198 | && (regno & 1) != 0 && regno < 32) |
c5aa993b | 1199 | { |
2df3850c | 1200 | monitor_debug ("EXP getreg.resp_delim\n"); |
c906108c SS |
1201 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1202 | } | |
1203 | } | |
1204 | ||
1205 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ | |
c5aa993b | 1206 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1207 | { |
1208 | int c; | |
1209 | c = readchar (timeout); | |
1210 | while (c == ' ') | |
1211 | c = readchar (timeout); | |
1212 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1213 | ; | |
1214 | else | |
8a3fe4f8 | 1215 | error (_("Bad value returned from monitor while fetching register %x."), |
c5aa993b | 1216 | regno); |
c906108c SS |
1217 | } |
1218 | ||
1219 | /* Read upto the maximum number of hex digits for this register, skipping | |
1220 | spaces, but stop reading if something else is seen. Some monitors | |
1221 | like to drop leading zeros. */ | |
1222 | ||
9b072297 | 1223 | for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++) |
c906108c SS |
1224 | { |
1225 | int c; | |
1226 | c = readchar (timeout); | |
1227 | while (c == ' ') | |
1228 | c = readchar (timeout); | |
1229 | ||
1230 | if (!isxdigit (c)) | |
1231 | break; | |
1232 | ||
1233 | regbuf[i] = c; | |
1234 | } | |
1235 | ||
1236 | regbuf[i] = '\000'; /* terminate the number */ | |
2df3850c | 1237 | monitor_debug ("REGVAL '%s'\n", regbuf); |
c906108c SS |
1238 | |
1239 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1240 | is present), we will send TERM_CMD if that is present. In any | |
1241 | case, we collect all of the output into buf, and then wait for | |
1242 | the normal prompt. */ | |
1243 | ||
1244 | if (current_monitor->getreg.term) | |
1245 | { | |
2df3850c JM |
1246 | monitor_debug ("EXP getreg.term\n"); |
1247 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ | |
c906108c SS |
1248 | } |
1249 | ||
1250 | if (current_monitor->getreg.term_cmd) | |
c5aa993b | 1251 | { |
2df3850c JM |
1252 | monitor_debug ("EMIT getreg.term.cmd\n"); |
1253 | monitor_printf (current_monitor->getreg.term_cmd); | |
c906108c | 1254 | } |
c5aa993b JM |
1255 | if (!current_monitor->getreg.term || /* Already expected or */ |
1256 | current_monitor->getreg.term_cmd) /* ack expected */ | |
1257 | monitor_expect_prompt (NULL, 0); /* get response */ | |
c906108c | 1258 | |
56be3814 | 1259 | monitor_supply_register (regcache, regno, regbuf); |
c906108c SS |
1260 | } |
1261 | ||
1262 | /* Sometimes, it takes several commands to dump the registers */ | |
1263 | /* This is a primitive for use by variations of monitor interfaces in | |
1264 | case they need to compose the operation. | |
c5aa993b JM |
1265 | */ |
1266 | int | |
c410a84c | 1267 | monitor_dump_reg_block (struct regcache *regcache, char *block_cmd) |
c906108c | 1268 | { |
d4f3574e | 1269 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1270 | int resp_len; |
1271 | monitor_printf (block_cmd); | |
1272 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
c410a84c | 1273 | parse_register_dump (regcache, buf, resp_len); |
c5aa993b | 1274 | return 1; |
c906108c SS |
1275 | } |
1276 | ||
1277 | ||
1278 | /* Read the remote registers into the block regs. */ | |
1279 | /* Call the specific function if it has been provided */ | |
1280 | ||
1281 | static void | |
c410a84c | 1282 | monitor_dump_regs (struct regcache *regcache) |
c906108c | 1283 | { |
d4f3574e | 1284 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1285 | int resp_len; |
1286 | if (current_monitor->dumpregs) | |
c410a84c | 1287 | (*(current_monitor->dumpregs)) (regcache); /* call supplied function */ |
c5aa993b JM |
1288 | else if (current_monitor->dump_registers) /* default version */ |
1289 | { | |
1290 | monitor_printf (current_monitor->dump_registers); | |
c906108c | 1291 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
c410a84c | 1292 | parse_register_dump (regcache, buf, resp_len); |
c906108c SS |
1293 | } |
1294 | else | |
e2e0b3e5 | 1295 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); /* Need some way to read registers */ |
c906108c SS |
1296 | } |
1297 | ||
1298 | static void | |
28439f5e PA |
1299 | monitor_fetch_registers (struct target_ops *ops, |
1300 | struct regcache *regcache, int regno) | |
c906108c | 1301 | { |
2df3850c | 1302 | monitor_debug ("MON fetchregs\n"); |
c5aa993b | 1303 | if (current_monitor->getreg.cmd) |
c906108c SS |
1304 | { |
1305 | if (regno >= 0) | |
1306 | { | |
56be3814 | 1307 | monitor_fetch_register (regcache, regno); |
c906108c SS |
1308 | return; |
1309 | } | |
1310 | ||
9b072297 UW |
1311 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1312 | regno++) | |
56be3814 | 1313 | monitor_fetch_register (regcache, regno); |
c906108c | 1314 | } |
c5aa993b JM |
1315 | else |
1316 | { | |
56be3814 | 1317 | monitor_dump_regs (regcache); |
c5aa993b | 1318 | } |
c906108c SS |
1319 | } |
1320 | ||
1321 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1322 | ||
1323 | static void | |
56be3814 | 1324 | monitor_store_register (struct regcache *regcache, int regno) |
c906108c | 1325 | { |
5af949e3 | 1326 | int reg_size = register_size (get_regcache_arch (regcache), regno); |
444199e7 | 1327 | const char *name; |
d4f3574e | 1328 | ULONGEST val; |
1c617db8 GS |
1329 | |
1330 | if (current_monitor->regname != NULL) | |
1331 | name = current_monitor->regname (regno); | |
1332 | else | |
1333 | name = current_monitor->regnames[regno]; | |
1334 | ||
c906108c | 1335 | if (!name || (*name == '\0')) |
c5aa993b | 1336 | { |
2df3850c JM |
1337 | monitor_debug ("MON Cannot store unknown register\n"); |
1338 | return; | |
c906108c SS |
1339 | } |
1340 | ||
56be3814 | 1341 | regcache_cooked_read_unsigned (regcache, regno, &val); |
5af949e3 | 1342 | monitor_debug ("MON storeg %d %s\n", regno, phex (val, reg_size)); |
c906108c SS |
1343 | |
1344 | /* send the register deposit command */ | |
1345 | ||
2df3850c | 1346 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
c906108c SS |
1347 | monitor_printf (current_monitor->setreg.cmd, val, name); |
1348 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1349 | monitor_printf (current_monitor->setreg.cmd, name); | |
1350 | else | |
1351 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1352 | ||
1456ad8e AC |
1353 | if (current_monitor->setreg.resp_delim) |
1354 | { | |
1355 | monitor_debug ("EXP setreg.resp_delim\n"); | |
1356 | monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0); | |
1357 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
5af949e3 | 1358 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
1456ad8e | 1359 | } |
c906108c | 1360 | if (current_monitor->setreg.term) |
c5aa993b | 1361 | { |
2df3850c JM |
1362 | monitor_debug ("EXP setreg.term\n"); |
1363 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
c906108c | 1364 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
5af949e3 | 1365 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
c906108c SS |
1366 | monitor_expect_prompt (NULL, 0); |
1367 | } | |
1368 | else | |
1369 | monitor_expect_prompt (NULL, 0); | |
c5aa993b JM |
1370 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ |
1371 | { | |
2df3850c | 1372 | monitor_debug ("EXP setreg_termcmd\n"); |
c5aa993b JM |
1373 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
1374 | monitor_expect_prompt (NULL, 0); | |
c906108c | 1375 | } |
c5aa993b | 1376 | } /* monitor_store_register */ |
c906108c SS |
1377 | |
1378 | /* Store the remote registers. */ | |
1379 | ||
1380 | static void | |
28439f5e PA |
1381 | monitor_store_registers (struct target_ops *ops, |
1382 | struct regcache *regcache, int regno) | |
c906108c SS |
1383 | { |
1384 | if (regno >= 0) | |
1385 | { | |
56be3814 | 1386 | monitor_store_register (regcache, regno); |
c906108c SS |
1387 | return; |
1388 | } | |
1389 | ||
9b072297 UW |
1390 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1391 | regno++) | |
56be3814 | 1392 | monitor_store_register (regcache, regno); |
c906108c SS |
1393 | } |
1394 | ||
1395 | /* Get ready to modify the registers array. On machines which store | |
1396 | individual registers, this doesn't need to do anything. On machines | |
1397 | which store all the registers in one fell swoop, this makes sure | |
1398 | that registers contains all the registers from the program being | |
1399 | debugged. */ | |
1400 | ||
1401 | static void | |
316f2060 | 1402 | monitor_prepare_to_store (struct regcache *regcache) |
c906108c SS |
1403 | { |
1404 | /* Do nothing, since we can store individual regs */ | |
1405 | } | |
1406 | ||
1407 | static void | |
fba45db2 | 1408 | monitor_files_info (struct target_ops *ops) |
c906108c | 1409 | { |
a3f17187 | 1410 | printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate); |
c906108c SS |
1411 | } |
1412 | ||
1413 | static int | |
fba45db2 | 1414 | monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1415 | { |
e17a4113 | 1416 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
c5aa993b | 1417 | unsigned int val, hostval; |
c906108c SS |
1418 | char *cmd; |
1419 | int i; | |
1420 | ||
5af949e3 | 1421 | monitor_debug ("MON write %d %s\n", len, paddress (target_gdbarch, memaddr)); |
c906108c | 1422 | |
2df3850c | 1423 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
a97b0ac8 | 1424 | memaddr = gdbarch_addr_bits_remove (target_gdbarch, memaddr); |
c906108c SS |
1425 | |
1426 | /* Use memory fill command for leading 0 bytes. */ | |
1427 | ||
1428 | if (current_monitor->fill) | |
1429 | { | |
1430 | for (i = 0; i < len; i++) | |
1431 | if (myaddr[i] != 0) | |
1432 | break; | |
1433 | ||
1434 | if (i > 4) /* More than 4 zeros is worth doing */ | |
1435 | { | |
2df3850c JM |
1436 | monitor_debug ("MON FILL %d\n", i); |
1437 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
c5aa993b JM |
1438 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0); |
1439 | else | |
1440 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
c906108c SS |
1441 | |
1442 | monitor_expect_prompt (NULL, 0); | |
1443 | ||
1444 | return i; | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | #if 0 | |
1449 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1450 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1451 | { | |
1452 | len = 8; | |
1453 | cmd = current_monitor->setmem.cmdll; | |
1454 | } | |
1455 | else | |
1456 | #endif | |
1457 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1458 | { | |
1459 | len = 4; | |
1460 | cmd = current_monitor->setmem.cmdl; | |
1461 | } | |
1462 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1463 | { | |
1464 | len = 2; | |
1465 | cmd = current_monitor->setmem.cmdw; | |
1466 | } | |
1467 | else | |
1468 | { | |
1469 | len = 1; | |
1470 | cmd = current_monitor->setmem.cmdb; | |
1471 | } | |
1472 | ||
e17a4113 | 1473 | val = extract_unsigned_integer (myaddr, len, byte_order); |
c5aa993b | 1474 | |
c906108c | 1475 | if (len == 4) |
c5aa993b JM |
1476 | { |
1477 | hostval = *(unsigned int *) myaddr; | |
2df3850c | 1478 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
c906108c SS |
1479 | } |
1480 | ||
1481 | ||
1482 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1483 | monitor_printf_noecho (cmd, memaddr, val); | |
1484 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1485 | { | |
1486 | ||
1487 | monitor_printf_noecho (cmd, memaddr); | |
1488 | ||
1456ad8e AC |
1489 | if (current_monitor->setmem.resp_delim) |
1490 | { | |
1491 | monitor_debug ("EXP setmem.resp_delim"); | |
1492 | monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0); | |
1493 | monitor_printf ("%x\r", val); | |
1494 | } | |
c906108c | 1495 | if (current_monitor->setmem.term) |
c5aa993b | 1496 | { |
2df3850c | 1497 | monitor_debug ("EXP setmem.term"); |
c906108c SS |
1498 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
1499 | monitor_printf ("%x\r", val); | |
1500 | } | |
1501 | if (current_monitor->setmem.term_cmd) | |
c5aa993b JM |
1502 | { /* Emit this to get out of the memory editing state */ |
1503 | monitor_printf ("%s", current_monitor->setmem.term_cmd); | |
c906108c SS |
1504 | /* Drop through to expecting a prompt */ |
1505 | } | |
1506 | } | |
1507 | else | |
1508 | monitor_printf (cmd, memaddr, val); | |
1509 | ||
1510 | monitor_expect_prompt (NULL, 0); | |
1511 | ||
1512 | return len; | |
1513 | } | |
1514 | ||
1515 | ||
c5aa993b | 1516 | static int |
fba45db2 | 1517 | monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1518 | { |
c5aa993b JM |
1519 | unsigned char val; |
1520 | int written = 0; | |
1521 | if (len == 0) | |
1522 | return 0; | |
c906108c | 1523 | /* Enter the sub mode */ |
c5aa993b JM |
1524 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
1525 | monitor_expect_prompt (NULL, 0); | |
c906108c SS |
1526 | while (len) |
1527 | { | |
c5aa993b JM |
1528 | val = *myaddr; |
1529 | monitor_printf ("%x\r", val); | |
1530 | myaddr++; | |
1531 | memaddr++; | |
1532 | written++; | |
c906108c | 1533 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1534 | monitor_expect_prompt (NULL, 0); |
1535 | len--; | |
c906108c SS |
1536 | } |
1537 | /* Now exit the sub mode */ | |
1538 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1539 | monitor_expect_prompt (NULL, 0); |
1540 | return written; | |
c906108c SS |
1541 | } |
1542 | ||
1543 | ||
1544 | static void | |
c5aa993b | 1545 | longlongendswap (unsigned char *a) |
c906108c | 1546 | { |
c5aa993b JM |
1547 | int i, j; |
1548 | unsigned char x; | |
1549 | i = 0; | |
1550 | j = 7; | |
c906108c | 1551 | while (i < 4) |
c5aa993b JM |
1552 | { |
1553 | x = *(a + i); | |
1554 | *(a + i) = *(a + j); | |
1555 | *(a + j) = x; | |
1556 | i++, j--; | |
c906108c SS |
1557 | } |
1558 | } | |
1559 | /* Format 32 chars of long long value, advance the pointer */ | |
c5aa993b JM |
1560 | static char *hexlate = "0123456789abcdef"; |
1561 | static char * | |
1562 | longlong_hexchars (unsigned long long value, | |
1563 | char *outbuff) | |
c906108c | 1564 | { |
c5aa993b JM |
1565 | if (value == 0) |
1566 | { | |
1567 | *outbuff++ = '0'; | |
1568 | return outbuff; | |
1569 | } | |
c906108c | 1570 | else |
c5aa993b JM |
1571 | { |
1572 | static unsigned char disbuf[8]; /* disassembly buffer */ | |
1573 | unsigned char *scan, *limit; /* loop controls */ | |
1574 | unsigned char c, nib; | |
1575 | int leadzero = 1; | |
1576 | scan = disbuf; | |
1577 | limit = scan + 8; | |
1578 | { | |
1579 | unsigned long long *dp; | |
1580 | dp = (unsigned long long *) scan; | |
1581 | *dp = value; | |
c906108c | 1582 | } |
c5aa993b | 1583 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */ |
c906108c | 1584 | while (scan < limit) |
7a292a7a | 1585 | { |
c5aa993b | 1586 | c = *scan++; /* a byte of our long long value */ |
c906108c | 1587 | if (leadzero) |
7a292a7a SS |
1588 | { |
1589 | if (c == 0) | |
1590 | continue; | |
1591 | else | |
c5aa993b | 1592 | leadzero = 0; /* henceforth we print even zeroes */ |
7a292a7a | 1593 | } |
c5aa993b | 1594 | nib = c >> 4; /* high nibble bits */ |
7a292a7a | 1595 | *outbuff++ = hexlate[nib]; |
c5aa993b | 1596 | nib = c & 0x0f; /* low nibble bits */ |
7a292a7a | 1597 | *outbuff++ = hexlate[nib]; |
c906108c | 1598 | } |
c5aa993b | 1599 | return outbuff; |
c906108c | 1600 | } |
c5aa993b | 1601 | } /* longlong_hexchars */ |
c906108c SS |
1602 | |
1603 | ||
1604 | ||
1605 | /* I am only going to call this when writing virtual byte streams. | |
1606 | Which possably entails endian conversions | |
c5aa993b JM |
1607 | */ |
1608 | static int | |
fba45db2 | 1609 | monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1610 | { |
c5aa993b JM |
1611 | static char hexstage[20]; /* At least 16 digits required, plus null */ |
1612 | char *endstring; | |
1613 | long long *llptr; | |
1614 | long long value; | |
1615 | int written = 0; | |
1616 | llptr = (unsigned long long *) myaddr; | |
1617 | if (len == 0) | |
1618 | return 0; | |
1619 | monitor_printf (current_monitor->setmem.cmdll, memaddr); | |
1620 | monitor_expect_prompt (NULL, 0); | |
1621 | while (len >= 8) | |
1622 | { | |
1623 | value = *llptr; | |
1624 | endstring = longlong_hexchars (*llptr, hexstage); | |
1625 | *endstring = '\0'; /* NUll terminate for printf */ | |
1626 | monitor_printf ("%s\r", hexstage); | |
1627 | llptr++; | |
1628 | memaddr += 8; | |
1629 | written += 8; | |
c906108c | 1630 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1631 | monitor_expect_prompt (NULL, 0); |
1632 | len -= 8; | |
c906108c SS |
1633 | } |
1634 | /* Now exit the sub mode */ | |
1635 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1636 | monitor_expect_prompt (NULL, 0); |
1637 | return written; | |
1638 | } /* */ | |
c906108c SS |
1639 | |
1640 | ||
1641 | ||
1642 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1643 | /* This is for the large blocks of memory which may occur in downloading. | |
1644 | And for monitors which use interactive entry, | |
1645 | And for monitors which do not have other downloading methods. | |
1646 | Without this, we will end up calling monitor_write_memory many times | |
1647 | and do the entry and exit of the sub mode many times | |
1648 | This currently assumes... | |
c5aa993b JM |
1649 | MO_SETMEM_INTERACTIVE |
1650 | ! MO_NO_ECHO_ON_SETMEM | |
1651 | To use this, the you have to patch the monitor_cmds block with | |
1652 | this function. Otherwise, its not tuned up for use by all | |
1653 | monitor variations. | |
1654 | */ | |
c906108c | 1655 | |
c5aa993b | 1656 | static int |
fba45db2 | 1657 | monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1658 | { |
c5aa993b JM |
1659 | int written; |
1660 | written = 0; | |
c906108c | 1661 | /* FIXME: This would be a good place to put the zero test */ |
c5aa993b | 1662 | #if 1 |
c906108c | 1663 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
c5aa993b JM |
1664 | { |
1665 | return monitor_write_memory_longlongs (memaddr, myaddr, len); | |
1666 | } | |
c906108c | 1667 | #endif |
c5aa993b JM |
1668 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
1669 | return written; | |
c906108c SS |
1670 | } |
1671 | ||
1672 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1673 | which can only read a single byte/word/etc. at a time. */ | |
1674 | ||
1675 | static int | |
fba45db2 | 1676 | monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1677 | { |
e17a4113 | 1678 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
c906108c | 1679 | unsigned int val; |
c5aa993b | 1680 | char membuf[sizeof (int) * 2 + 1]; |
c906108c SS |
1681 | char *p; |
1682 | char *cmd; | |
c906108c | 1683 | |
2df3850c | 1684 | monitor_debug ("MON read single\n"); |
c906108c SS |
1685 | #if 0 |
1686 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1687 | call to strtoul below will fail if it tries to convert a value | |
1688 | that's too big to fit in a long. */ | |
1689 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1690 | { | |
1691 | len = 8; | |
1692 | cmd = current_monitor->getmem.cmdll; | |
1693 | } | |
1694 | else | |
1695 | #endif | |
1696 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1697 | { | |
1698 | len = 4; | |
1699 | cmd = current_monitor->getmem.cmdl; | |
1700 | } | |
1701 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1702 | { | |
1703 | len = 2; | |
1704 | cmd = current_monitor->getmem.cmdw; | |
1705 | } | |
1706 | else | |
1707 | { | |
1708 | len = 1; | |
1709 | cmd = current_monitor->getmem.cmdb; | |
1710 | } | |
1711 | ||
1712 | /* Send the examine command. */ | |
1713 | ||
1714 | monitor_printf (cmd, memaddr); | |
1715 | ||
1716 | /* If RESP_DELIM is specified, we search for that as a leading | |
1717 | delimiter for the memory value. Otherwise, we just start | |
1718 | searching from the start of the buf. */ | |
1719 | ||
1720 | if (current_monitor->getmem.resp_delim) | |
c5aa993b | 1721 | { |
2df3850c | 1722 | monitor_debug ("EXP getmem.resp_delim\n"); |
c906108c SS |
1723 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
1724 | } | |
1725 | ||
1726 | /* Now, read the appropriate number of hex digits for this loc, | |
1727 | skipping spaces. */ | |
1728 | ||
1729 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ | |
c5aa993b | 1730 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1731 | { |
1732 | int c; | |
1733 | ||
1734 | c = readchar (timeout); | |
1735 | while (c == ' ') | |
1736 | c = readchar (timeout); | |
1737 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1738 | ; | |
1739 | else | |
2df3850c JM |
1740 | monitor_error ("monitor_read_memory_single", |
1741 | "bad response from monitor", | |
93d56215 | 1742 | memaddr, 0, NULL, 0); |
c906108c | 1743 | } |
c906108c | 1744 | |
93d56215 AC |
1745 | { |
1746 | int i; | |
1747 | for (i = 0; i < len * 2; i++) | |
1748 | { | |
1749 | int c; | |
c906108c | 1750 | |
93d56215 AC |
1751 | while (1) |
1752 | { | |
1753 | c = readchar (timeout); | |
1754 | if (isxdigit (c)) | |
1755 | break; | |
1756 | if (c == ' ') | |
1757 | continue; | |
1758 | ||
1759 | monitor_error ("monitor_read_memory_single", | |
1760 | "bad response from monitor", | |
1761 | memaddr, i, membuf, 0); | |
1762 | } | |
c906108c SS |
1763 | membuf[i] = c; |
1764 | } | |
93d56215 AC |
1765 | membuf[i] = '\000'; /* terminate the number */ |
1766 | } | |
c906108c SS |
1767 | |
1768 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1769 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1770 | all of the output into buf, and then wait for the normal prompt. */ | |
1771 | ||
1772 | if (current_monitor->getmem.term) | |
1773 | { | |
c5aa993b | 1774 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ |
c906108c SS |
1775 | |
1776 | if (current_monitor->getmem.term_cmd) | |
1777 | { | |
1778 | monitor_printf (current_monitor->getmem.term_cmd); | |
1779 | monitor_expect_prompt (NULL, 0); | |
1780 | } | |
1781 | } | |
1782 | else | |
c5aa993b | 1783 | monitor_expect_prompt (NULL, 0); /* get response */ |
c906108c SS |
1784 | |
1785 | p = membuf; | |
1786 | val = strtoul (membuf, &p, 16); | |
1787 | ||
1788 | if (val == 0 && membuf == p) | |
2df3850c JM |
1789 | monitor_error ("monitor_read_memory_single", |
1790 | "bad value from monitor", | |
c906108c SS |
1791 | memaddr, 0, membuf, 0); |
1792 | ||
1793 | /* supply register stores in target byte order, so swap here */ | |
1794 | ||
e17a4113 | 1795 | store_unsigned_integer (myaddr, len, byte_order, val); |
c906108c SS |
1796 | |
1797 | return len; | |
1798 | } | |
1799 | ||
1800 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1801 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1802 | than 16 bytes at a time. */ | |
1803 | ||
1804 | static int | |
fba45db2 | 1805 | monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1806 | { |
1807 | unsigned int val; | |
1808 | char buf[512]; | |
1809 | char *p, *p1; | |
1810 | int resp_len; | |
1811 | int i; | |
1812 | CORE_ADDR dumpaddr; | |
1813 | ||
1814 | if (len <= 0) | |
1815 | { | |
2df3850c | 1816 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
c906108c SS |
1817 | return 0; |
1818 | } | |
1819 | ||
2df3850c | 1820 | monitor_debug ("MON read block ta(%s) ha(%lx) %d\n", |
5af949e3 | 1821 | paddress (target_gdbarch, memaddr), (long) myaddr, len); |
c906108c SS |
1822 | |
1823 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
a97b0ac8 | 1824 | memaddr = gdbarch_addr_bits_remove (target_gdbarch, memaddr); |
c906108c SS |
1825 | |
1826 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1827 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1828 | ||
1829 | len = min (len, 16); | |
1830 | ||
1831 | /* Some dumpers align the first data with the preceeding 16 | |
1832 | byte boundary. Some print blanks and start at the | |
1833 | requested boundary. EXACT_DUMPADDR | |
c5aa993b | 1834 | */ |
c906108c SS |
1835 | |
1836 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
c5aa993b | 1837 | ? memaddr : memaddr & ~0x0f; |
c906108c SS |
1838 | |
1839 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1840 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1841 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1842 | ||
1843 | /* send the memory examine command */ | |
1844 | ||
1845 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1846 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1847 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1848 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1849 | else | |
1850 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1851 | ||
1852 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1853 | is present), we will send TERM_CMD if that is present. In any | |
1854 | case, we collect all of the output into buf, and then wait for | |
1855 | the normal prompt. */ | |
1856 | ||
1857 | if (current_monitor->getmem.term) | |
1858 | { | |
c5aa993b | 1859 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ |
c906108c SS |
1860 | |
1861 | if (resp_len <= 0) | |
2df3850c JM |
1862 | monitor_error ("monitor_read_memory", |
1863 | "excessive response from monitor", | |
c906108c SS |
1864 | memaddr, resp_len, buf, 0); |
1865 | ||
1866 | if (current_monitor->getmem.term_cmd) | |
1867 | { | |
2cd58942 | 1868 | serial_write (monitor_desc, current_monitor->getmem.term_cmd, |
c906108c SS |
1869 | strlen (current_monitor->getmem.term_cmd)); |
1870 | monitor_expect_prompt (NULL, 0); | |
1871 | } | |
1872 | } | |
1873 | else | |
c5aa993b | 1874 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ |
c906108c SS |
1875 | |
1876 | p = buf; | |
1877 | ||
1878 | /* If RESP_DELIM is specified, we search for that as a leading | |
1879 | delimiter for the values. Otherwise, we just start searching | |
1880 | from the start of the buf. */ | |
1881 | ||
1882 | if (current_monitor->getmem.resp_delim) | |
1883 | { | |
1884 | int retval, tmp; | |
1885 | struct re_registers resp_strings; | |
2df3850c | 1886 | monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim); |
c906108c SS |
1887 | |
1888 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1889 | tmp = strlen (p); | |
1890 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1891 | &resp_strings); | |
1892 | ||
1893 | if (retval < 0) | |
2df3850c JM |
1894 | monitor_error ("monitor_read_memory", |
1895 | "bad response from monitor", | |
c906108c SS |
1896 | memaddr, resp_len, buf, 0); |
1897 | ||
1898 | p += resp_strings.end[0]; | |
1899 | #if 0 | |
1900 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1901 | if (!p) | |
2df3850c JM |
1902 | monitor_error ("monitor_read_memory", |
1903 | "bad response from monitor", | |
c906108c SS |
1904 | memaddr, resp_len, buf, 0); |
1905 | p += strlen (current_monitor->getmem.resp_delim); | |
1906 | #endif | |
1907 | } | |
2df3850c | 1908 | monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p); |
c906108c SS |
1909 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1910 | { | |
c5aa993b JM |
1911 | char c; |
1912 | int fetched = 0; | |
c906108c | 1913 | i = len; |
c5aa993b | 1914 | c = *p; |
c906108c | 1915 | |
c5aa993b JM |
1916 | |
1917 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1918 | { | |
1919 | if (isxdigit (c)) | |
1920 | { | |
1921 | if ((dumpaddr >= memaddr) && (i > 0)) | |
1922 | { | |
1923 | val = fromhex (c) * 16 + fromhex (*(p + 1)); | |
c906108c | 1924 | *myaddr++ = val; |
2df3850c JM |
1925 | if (monitor_debug_p || remote_debug) |
1926 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); | |
c906108c | 1927 | --i; |
c5aa993b | 1928 | fetched++; |
c906108c SS |
1929 | } |
1930 | ++dumpaddr; | |
1931 | ++p; | |
1932 | } | |
c5aa993b JM |
1933 | ++p; /* skip a blank or other non hex char */ |
1934 | c = *p; | |
c906108c | 1935 | } |
c5aa993b | 1936 | if (fetched == 0) |
8a3fe4f8 | 1937 | error (_("Failed to read via monitor")); |
2df3850c JM |
1938 | if (monitor_debug_p || remote_debug) |
1939 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
c5aa993b | 1940 | return fetched; /* Return the number of bytes actually read */ |
c906108c | 1941 | } |
2df3850c | 1942 | monitor_debug ("MON scanning bytes\n"); |
c906108c SS |
1943 | |
1944 | for (i = len; i > 0; i--) | |
1945 | { | |
1946 | /* Skip non-hex chars, but bomb on end of string and newlines */ | |
1947 | ||
1948 | while (1) | |
1949 | { | |
1950 | if (isxdigit (*p)) | |
1951 | break; | |
1952 | ||
1953 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
2df3850c JM |
1954 | monitor_error ("monitor_read_memory", |
1955 | "badly terminated response from monitor", | |
c906108c SS |
1956 | memaddr, resp_len, buf, 0); |
1957 | p++; | |
1958 | } | |
1959 | ||
1960 | val = strtoul (p, &p1, 16); | |
1961 | ||
1962 | if (val == 0 && p == p1) | |
2df3850c JM |
1963 | monitor_error ("monitor_read_memory", |
1964 | "bad value from monitor", | |
c906108c SS |
1965 | memaddr, resp_len, buf, 0); |
1966 | ||
1967 | *myaddr++ = val; | |
1968 | ||
1969 | if (i == 1) | |
1970 | break; | |
1971 | ||
1972 | p = p1; | |
1973 | } | |
1974 | ||
1975 | return len; | |
1976 | } | |
1977 | ||
0e7e8d51 KB |
1978 | /* Transfer LEN bytes between target address MEMADDR and GDB address |
1979 | MYADDR. Returns 0 for success, errno code for failure. TARGET is | |
1980 | unused. */ | |
1981 | ||
c906108c | 1982 | static int |
18cf8b5b | 1983 | monitor_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
0a65a603 | 1984 | struct mem_attrib *attrib, struct target_ops *target) |
c906108c | 1985 | { |
4930751a C |
1986 | int res; |
1987 | ||
1988 | if (write) | |
1989 | { | |
1990 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
1991 | res = monitor_write_memory_block(memaddr, myaddr, len); | |
1992 | else | |
1993 | res = monitor_write_memory(memaddr, myaddr, len); | |
1994 | } | |
1995 | else | |
1996 | { | |
1997 | res = monitor_read_memory(memaddr, myaddr, len); | |
1998 | } | |
1999 | ||
2000 | return res; | |
c906108c SS |
2001 | } |
2002 | ||
2003 | static void | |
7d85a9c0 | 2004 | monitor_kill (struct target_ops *ops) |
c906108c | 2005 | { |
c5aa993b | 2006 | return; /* ignore attempts to kill target system */ |
c906108c SS |
2007 | } |
2008 | ||
281b533b | 2009 | /* All we actually do is set the PC to the start address of exec_bfd. */ |
c906108c SS |
2010 | |
2011 | static void | |
136d6dae VP |
2012 | monitor_create_inferior (struct target_ops *ops, char *exec_file, |
2013 | char *args, char **env, int from_tty) | |
c906108c SS |
2014 | { |
2015 | if (args && (*args != '\000')) | |
8a3fe4f8 | 2016 | error (_("Args are not supported by the monitor.")); |
c906108c SS |
2017 | |
2018 | first_time = 1; | |
2019 | clear_proceed_status (); | |
fb14de7b UW |
2020 | regcache_write_pc (get_current_regcache (), |
2021 | bfd_get_start_address (exec_bfd)); | |
c906108c SS |
2022 | } |
2023 | ||
2024 | /* Clean up when a program exits. | |
2025 | The program actually lives on in the remote processor's RAM, and may be | |
2026 | run again without a download. Don't leave it full of breakpoint | |
2027 | instructions. */ | |
2028 | ||
2029 | static void | |
136d6dae | 2030 | monitor_mourn_inferior (struct target_ops *ops) |
c906108c SS |
2031 | { |
2032 | unpush_target (targ_ops); | |
2033 | generic_mourn_inferior (); /* Do all the proper things now */ | |
5e0b29c1 | 2034 | delete_thread_silent (monitor_ptid); |
c906108c SS |
2035 | } |
2036 | ||
c906108c SS |
2037 | /* Tell the monitor to add a breakpoint. */ |
2038 | ||
2039 | static int | |
a6d9a66e UW |
2040 | monitor_insert_breakpoint (struct gdbarch *gdbarch, |
2041 | struct bp_target_info *bp_tgt) | |
c906108c | 2042 | { |
8181d85f | 2043 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c | 2044 | int i; |
c906108c SS |
2045 | int bplen; |
2046 | ||
5af949e3 | 2047 | monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2048 | if (current_monitor->set_break == NULL) |
8a3fe4f8 | 2049 | error (_("No set_break defined for this monitor")); |
c906108c SS |
2050 | |
2051 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
a6d9a66e | 2052 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
c906108c SS |
2053 | |
2054 | /* Determine appropriate breakpoint size for this address. */ | |
a6d9a66e | 2055 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); |
8181d85f DJ |
2056 | bp_tgt->placed_address = addr; |
2057 | bp_tgt->placed_size = bplen; | |
c906108c | 2058 | |
9e086581 | 2059 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2060 | { |
2061 | if (breakaddr[i] == 0) | |
2062 | { | |
2063 | breakaddr[i] = addr; | |
c906108c SS |
2064 | monitor_printf (current_monitor->set_break, addr); |
2065 | monitor_expect_prompt (NULL, 0); | |
2066 | return 0; | |
2067 | } | |
2068 | } | |
2069 | ||
8a3fe4f8 | 2070 | error (_("Too many breakpoints (> %d) for monitor."), current_monitor->num_breakpoints); |
c906108c SS |
2071 | } |
2072 | ||
2073 | /* Tell the monitor to remove a breakpoint. */ | |
2074 | ||
2075 | static int | |
a6d9a66e UW |
2076 | monitor_remove_breakpoint (struct gdbarch *gdbarch, |
2077 | struct bp_target_info *bp_tgt) | |
c906108c | 2078 | { |
8181d85f | 2079 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c SS |
2080 | int i; |
2081 | ||
5af949e3 | 2082 | monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2083 | if (current_monitor->clr_break == NULL) |
8a3fe4f8 | 2084 | error (_("No clr_break defined for this monitor")); |
c906108c | 2085 | |
9e086581 | 2086 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2087 | { |
2088 | if (breakaddr[i] == addr) | |
2089 | { | |
2090 | breakaddr[i] = 0; | |
2091 | /* some monitors remove breakpoints based on the address */ | |
2092 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) | |
2093 | monitor_printf (current_monitor->clr_break, addr); | |
2094 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2095 | monitor_printf (current_monitor->clr_break, i + 1); | |
2096 | else | |
2097 | monitor_printf (current_monitor->clr_break, i); | |
2098 | monitor_expect_prompt (NULL, 0); | |
2099 | return 0; | |
2100 | } | |
2101 | } | |
2102 | fprintf_unfiltered (gdb_stderr, | |
5af949e3 UW |
2103 | "Can't find breakpoint associated with %s\n", |
2104 | paddress (gdbarch, addr)); | |
c906108c SS |
2105 | return 1; |
2106 | } | |
2107 | ||
2108 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2109 | an S-record. Return non-zero if the ACK is received properly. */ | |
2110 | ||
2111 | static int | |
fba45db2 | 2112 | monitor_wait_srec_ack (void) |
c906108c | 2113 | { |
d4f3574e | 2114 | int ch; |
c906108c SS |
2115 | |
2116 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2117 | { | |
2118 | return (readchar (timeout) == '+'); | |
2119 | } | |
2120 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2121 | { | |
2122 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2123 | if ((ch = readchar (1)) < 0) | |
2124 | return 0; | |
2125 | if ((ch = readchar (1)) < 0) | |
2126 | return 0; | |
2127 | if ((ch = readchar (1)) < 0) | |
2128 | return 0; | |
2129 | if ((ch = readchar (1)) < 0) | |
2130 | return 0; | |
2131 | } | |
2132 | return 1; | |
2133 | } | |
2134 | ||
2135 | /* monitor_load -- download a file. */ | |
2136 | ||
2137 | static void | |
fba45db2 | 2138 | monitor_load (char *file, int from_tty) |
c906108c | 2139 | { |
2df3850c | 2140 | monitor_debug ("MON load\n"); |
c906108c | 2141 | |
2df3850c | 2142 | if (current_monitor->load_routine) |
c906108c SS |
2143 | current_monitor->load_routine (monitor_desc, file, hashmark); |
2144 | else | |
2145 | { /* The default is ascii S-records */ | |
2146 | int n; | |
2147 | unsigned long load_offset; | |
2148 | char buf[128]; | |
2149 | ||
2150 | /* enable user to specify address for downloading as 2nd arg to load */ | |
2151 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); | |
2152 | if (n > 1) | |
2153 | file = buf; | |
2154 | else | |
2155 | load_offset = 0; | |
2156 | ||
2157 | monitor_printf (current_monitor->load); | |
2158 | if (current_monitor->loadresp) | |
2159 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
2160 | ||
2161 | load_srec (monitor_desc, file, (bfd_vma) load_offset, | |
2162 | 32, SREC_ALL, hashmark, | |
2163 | current_monitor->flags & MO_SREC_ACK ? | |
c5aa993b | 2164 | monitor_wait_srec_ack : NULL); |
c906108c SS |
2165 | |
2166 | monitor_expect_prompt (NULL, 0); | |
2167 | } | |
2168 | ||
fe490085 | 2169 | /* Finally, make the PC point at the start address */ |
c906108c | 2170 | if (exec_bfd) |
fb14de7b UW |
2171 | regcache_write_pc (get_current_regcache (), |
2172 | bfd_get_start_address (exec_bfd)); | |
c906108c | 2173 | |
e8816aac JB |
2174 | /* There used to be code here which would clear inferior_ptid and |
2175 | call clear_symtab_users. None of that should be necessary: | |
2176 | monitor targets should behave like remote protocol targets, and | |
2177 | since generic_load does none of those things, this function | |
2178 | shouldn't either. | |
2179 | ||
2180 | Furthermore, clearing inferior_ptid is *incorrect*. After doing | |
2181 | a load, we still have a valid connection to the monitor, with a | |
2182 | live processor state to fiddle with. The user can type | |
2183 | `continue' or `jump *start' and make the program run. If they do | |
2184 | these things, however, GDB will be talking to a running program | |
2185 | while inferior_ptid is null_ptid; this makes things like | |
2186 | reinit_frame_cache very confused. */ | |
c906108c SS |
2187 | } |
2188 | ||
2189 | static void | |
f9c72d52 | 2190 | monitor_stop (ptid_t ptid) |
c906108c | 2191 | { |
2df3850c | 2192 | monitor_debug ("MON stop\n"); |
c906108c | 2193 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
2cd58942 | 2194 | serial_send_break (monitor_desc); |
c906108c SS |
2195 | if (current_monitor->stop) |
2196 | monitor_printf_noecho (current_monitor->stop); | |
2197 | } | |
2198 | ||
96baa820 JM |
2199 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
2200 | in OUTPUT until the prompt is seen. FIXME: We read the characters | |
2201 | ourseleves here cause of a nasty echo. */ | |
c906108c SS |
2202 | |
2203 | static void | |
96baa820 | 2204 | monitor_rcmd (char *command, |
d9fcf2fb | 2205 | struct ui_file *outbuf) |
c906108c SS |
2206 | { |
2207 | char *p; | |
2208 | int resp_len; | |
2209 | char buf[1000]; | |
2210 | ||
2211 | if (monitor_desc == NULL) | |
8a3fe4f8 | 2212 | error (_("monitor target not open.")); |
c906108c SS |
2213 | |
2214 | p = current_monitor->prompt; | |
2215 | ||
2216 | /* Send the command. Note that if no args were supplied, then we're | |
2217 | just sending the monitor a newline, which is sometimes useful. */ | |
2218 | ||
96baa820 | 2219 | monitor_printf ("%s\r", (command ? command : "")); |
c906108c SS |
2220 | |
2221 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2222 | ||
96baa820 | 2223 | fputs_unfiltered (buf, outbuf); /* Output the response */ |
c906108c SS |
2224 | } |
2225 | ||
2226 | /* Convert hex digit A to a number. */ | |
2227 | ||
2228 | #if 0 | |
2229 | static int | |
fba45db2 | 2230 | from_hex (int a) |
c5aa993b | 2231 | { |
c906108c SS |
2232 | if (a >= '0' && a <= '9') |
2233 | return a - '0'; | |
2234 | if (a >= 'a' && a <= 'f') | |
2235 | return a - 'a' + 10; | |
2236 | if (a >= 'A' && a <= 'F') | |
2237 | return a - 'A' + 10; | |
2238 | ||
8a3fe4f8 | 2239 | error (_("Reply contains invalid hex digit 0x%x"), a); |
c906108c SS |
2240 | } |
2241 | #endif | |
2242 | ||
2243 | char * | |
fba45db2 | 2244 | monitor_get_dev_name (void) |
c906108c SS |
2245 | { |
2246 | return dev_name; | |
2247 | } | |
2248 | ||
5e0b29c1 PA |
2249 | /* Check to see if a thread is still alive. */ |
2250 | ||
2251 | static int | |
28439f5e | 2252 | monitor_thread_alive (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2253 | { |
2254 | if (ptid_equal (ptid, monitor_ptid)) | |
2255 | /* The monitor's task is always alive. */ | |
2256 | return 1; | |
2257 | ||
2258 | return 0; | |
2259 | } | |
2260 | ||
2261 | /* Convert a thread ID to a string. Returns the string in a static | |
2262 | buffer. */ | |
2263 | ||
2264 | static char * | |
117de6a9 | 2265 | monitor_pid_to_str (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2266 | { |
2267 | static char buf[64]; | |
2268 | ||
2269 | if (ptid_equal (monitor_ptid, ptid)) | |
2270 | { | |
2271 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
2272 | return buf; | |
2273 | } | |
2274 | ||
2275 | return normal_pid_to_str (ptid); | |
2276 | } | |
2277 | ||
c906108c SS |
2278 | static struct target_ops monitor_ops; |
2279 | ||
2280 | static void | |
2281 | init_base_monitor_ops (void) | |
2282 | { | |
c906108c | 2283 | monitor_ops.to_close = monitor_close; |
c906108c | 2284 | monitor_ops.to_detach = monitor_detach; |
c906108c SS |
2285 | monitor_ops.to_resume = monitor_resume; |
2286 | monitor_ops.to_wait = monitor_wait; | |
c906108c SS |
2287 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
2288 | monitor_ops.to_store_registers = monitor_store_registers; | |
2289 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
c8e73a31 | 2290 | monitor_ops.deprecated_xfer_memory = monitor_xfer_memory; |
c906108c SS |
2291 | monitor_ops.to_files_info = monitor_files_info; |
2292 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2293 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
c906108c SS |
2294 | monitor_ops.to_kill = monitor_kill; |
2295 | monitor_ops.to_load = monitor_load; | |
c906108c | 2296 | monitor_ops.to_create_inferior = monitor_create_inferior; |
c906108c | 2297 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
c906108c | 2298 | monitor_ops.to_stop = monitor_stop; |
96baa820 | 2299 | monitor_ops.to_rcmd = monitor_rcmd; |
49d03eab | 2300 | monitor_ops.to_log_command = serial_log_command; |
5e0b29c1 PA |
2301 | monitor_ops.to_thread_alive = monitor_thread_alive; |
2302 | monitor_ops.to_pid_to_str = monitor_pid_to_str; | |
c906108c | 2303 | monitor_ops.to_stratum = process_stratum; |
c35b1492 PA |
2304 | monitor_ops.to_has_all_memory = default_child_has_all_memory; |
2305 | monitor_ops.to_has_memory = default_child_has_memory; | |
2306 | monitor_ops.to_has_stack = default_child_has_stack; | |
2307 | monitor_ops.to_has_registers = default_child_has_registers; | |
2308 | monitor_ops.to_has_execution = default_child_has_execution; | |
c906108c | 2309 | monitor_ops.to_magic = OPS_MAGIC; |
c5aa993b | 2310 | } /* init_base_monitor_ops */ |
c906108c SS |
2311 | |
2312 | /* Init the target_ops structure pointed at by OPS */ | |
2313 | ||
2314 | void | |
fba45db2 | 2315 | init_monitor_ops (struct target_ops *ops) |
c906108c SS |
2316 | { |
2317 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2318 | init_base_monitor_ops (); | |
2319 | ||
2320 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2321 | } | |
2322 | ||
2323 | /* Define additional commands that are usually only used by monitors. */ | |
2324 | ||
a78f21af AC |
2325 | extern initialize_file_ftype _initialize_remote_monitors; /* -Wmissing-prototypes */ |
2326 | ||
c906108c | 2327 | void |
fba45db2 | 2328 | _initialize_remote_monitors (void) |
c906108c SS |
2329 | { |
2330 | init_base_monitor_ops (); | |
5bf193a2 AC |
2331 | add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\ |
2332 | Set display of activity while downloading a file."), _("\ | |
2333 | Show display of activity while downloading a file."), _("\ | |
2334 | When enabled, a hashmark \'#\' is displayed."), | |
2335 | NULL, | |
2336 | NULL, /* FIXME: i18n: */ | |
2337 | &setlist, &showlist); | |
2df3850c | 2338 | |
85c07804 AC |
2339 | add_setshow_zinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\ |
2340 | Set debugging of remote monitor communication."), _("\ | |
2341 | Show debugging of remote monitor communication."), _("\ | |
2df3850c | 2342 | When enabled, communication between GDB and the remote monitor\n\ |
85c07804 AC |
2343 | is displayed."), |
2344 | NULL, | |
2345 | NULL, /* FIXME: i18n: */ | |
2346 | &setdebuglist, &showdebuglist); | |
5e0b29c1 PA |
2347 | |
2348 | /* Yes, 42000 is arbitrary. The only sense out of it, is that it | |
2349 | isn't 0. */ | |
2350 | monitor_ptid = ptid_build (42000, 0, 42000); | |
c906108c | 2351 | } |