Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for boot monitors, for GDB. |
0a65a603 | 2 | |
ecd75fc8 | 3 | Copyright (C) 1990-2014 Free Software Foundation, Inc. |
0a65a603 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
6 | Resurrected from the ashes by Stu Grossman. | |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 13 | (at your option) any later version. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b | 20 | You should have received a copy of the GNU General Public License |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 22 | |
025bb325 | 23 | /* This file was derived from various remote-* modules. It is a collection |
c906108c | 24 | of generic support functions so GDB can talk directly to a ROM based |
025bb325 | 25 | monitor. This saves use from having to hack an exception based handler |
8e1a459b | 26 | into existence, and makes for quick porting. |
c906108c SS |
27 | |
28 | This module talks to a debug monitor called 'MONITOR', which | |
29 | We communicate with MONITOR via either a direct serial line, or a TCP | |
30 | (or possibly TELNET) stream to a terminal multiplexor, | |
31 | which in turn talks to the target board. */ | |
32 | ||
33 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
34 | most 32 bits long. If they can be larger, you will need to declare | |
35 | values as LONGEST and use %llx or some such to print values when | |
36 | building commands to send to the monitor. Since we don't know of | |
37 | any actual 64-bit targets with ROM monitors that use this code, | |
38 | it's not an issue right now. -sts 4/18/96 */ | |
39 | ||
40 | #include "defs.h" | |
41 | #include "gdbcore.h" | |
42 | #include "target.h" | |
60250e8b | 43 | #include "exceptions.h" |
c906108c SS |
44 | #include <signal.h> |
45 | #include <ctype.h> | |
0e9f083f | 46 | #include <string.h> |
c906108c SS |
47 | #include <sys/types.h> |
48 | #include "command.h" | |
49 | #include "serial.h" | |
50 | #include "monitor.h" | |
51 | #include "gdbcmd.h" | |
52 | #include "inferior.h" | |
45741a9c | 53 | #include "infrun.h" |
88987551 | 54 | #include "gdb_regex.h" |
c906108c | 55 | #include "srec.h" |
4e052eda | 56 | #include "regcache.h" |
c0a2216e | 57 | #include "gdbthread.h" |
40e397df | 58 | #include "readline/readline.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); |
1eab8a48 | 65 | static void monitor_stop (struct target_ops *self, 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 | ||
025bb325 | 74 | static int hashmark; /* flag set by "set hash". */ |
c906108c SS |
75 | |
76 | static int timeout = 30; | |
77 | ||
025bb325 | 78 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait(). */ |
c906108c | 79 | |
025bb325 | 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 | 89 | |
025bb325 | 90 | /* Pointer to regexp pattern matching data. */ |
c906108c SS |
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 | ||
3e43a32a MS |
107 | static int first_time = 0; /* Is this the first time we're |
108 | executing after gaving created the | |
025bb325 | 109 | child proccess? */ |
c906108c | 110 | |
5e0b29c1 PA |
111 | |
112 | /* This is the ptid we use while we're connected to a monitor. Its | |
113 | value is arbitrary, as monitor targets don't have a notion of | |
114 | processes or threads, but we need something non-null to place in | |
115 | inferior_ptid. */ | |
116 | static ptid_t monitor_ptid; | |
117 | ||
d4f3574e SS |
118 | #define TARGET_BUF_SIZE 2048 |
119 | ||
2df3850c | 120 | /* Monitor specific debugging information. Typically only useful to |
025bb325 | 121 | the developer of a new monitor interface. */ |
c906108c | 122 | |
a0b31db1 | 123 | static void monitor_debug (const char *fmt, ...) ATTRIBUTE_PRINTF (1, 2); |
2df3850c | 124 | |
ccce17b0 | 125 | static unsigned int monitor_debug_p = 0; |
2df3850c JM |
126 | |
127 | /* NOTE: This file alternates between monitor_debug_p and remote_debug | |
b2fa5097 | 128 | when determining if debug information is printed. Perhaps this |
025bb325 | 129 | could be simplified. */ |
2df3850c JM |
130 | |
131 | static void | |
132 | monitor_debug (const char *fmt, ...) | |
133 | { | |
134 | if (monitor_debug_p) | |
135 | { | |
136 | va_list args; | |
b8d56208 | 137 | |
2df3850c JM |
138 | va_start (args, fmt); |
139 | vfprintf_filtered (gdb_stdlog, fmt, args); | |
140 | va_end (args); | |
141 | } | |
142 | } | |
143 | ||
144 | ||
145 | /* Convert a string into a printable representation, Return # byte in | |
146 | the new string. When LEN is >0 it specifies the size of the | |
025bb325 | 147 | string. Otherwize strlen(oldstr) is used. */ |
2df3850c JM |
148 | |
149 | static void | |
150 | monitor_printable_string (char *newstr, char *oldstr, int len) | |
c906108c | 151 | { |
c906108c | 152 | int ch; |
2df3850c JM |
153 | int i; |
154 | ||
155 | if (len <= 0) | |
156 | len = strlen (oldstr); | |
c906108c | 157 | |
2df3850c | 158 | for (i = 0; i < len; i++) |
c906108c | 159 | { |
2df3850c | 160 | ch = oldstr[i]; |
c906108c | 161 | switch (ch) |
c5aa993b | 162 | { |
c906108c SS |
163 | default: |
164 | if (isprint (ch)) | |
165 | *newstr++ = ch; | |
166 | ||
167 | else | |
168 | { | |
169 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
170 | newstr += 4; | |
171 | } | |
172 | break; | |
173 | ||
c5aa993b JM |
174 | case '\\': |
175 | *newstr++ = '\\'; | |
176 | *newstr++ = '\\'; | |
177 | break; | |
178 | case '\b': | |
179 | *newstr++ = '\\'; | |
180 | *newstr++ = 'b'; | |
181 | break; | |
182 | case '\f': | |
183 | *newstr++ = '\\'; | |
184 | *newstr++ = 't'; | |
185 | break; | |
186 | case '\n': | |
187 | *newstr++ = '\\'; | |
188 | *newstr++ = 'n'; | |
189 | break; | |
190 | case '\r': | |
191 | *newstr++ = '\\'; | |
192 | *newstr++ = 'r'; | |
193 | break; | |
194 | case '\t': | |
195 | *newstr++ = '\\'; | |
196 | *newstr++ = 't'; | |
197 | break; | |
198 | case '\v': | |
199 | *newstr++ = '\\'; | |
200 | *newstr++ = 'v'; | |
201 | break; | |
202 | } | |
c906108c SS |
203 | } |
204 | ||
205 | *newstr++ = '\0'; | |
c906108c SS |
206 | } |
207 | ||
208 | /* Print monitor errors with a string, converting the string to printable | |
209 | representation. */ | |
210 | ||
211 | static void | |
2df3850c JM |
212 | monitor_error (char *function, char *message, |
213 | CORE_ADDR memaddr, int len, char *string, int final_char) | |
c906108c | 214 | { |
c5aa993b | 215 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
c906108c | 216 | char *safe_string = alloca ((real_len * 4) + 1); |
b8d56208 | 217 | |
2df3850c | 218 | monitor_printable_string (safe_string, string, real_len); |
c906108c SS |
219 | |
220 | if (final_char) | |
5af949e3 | 221 | error (_("%s (%s): %s: %s%c"), |
f5656ead | 222 | function, paddress (target_gdbarch (), memaddr), |
5af949e3 | 223 | message, safe_string, final_char); |
c906108c | 224 | else |
5af949e3 | 225 | error (_("%s (%s): %s: %s"), |
f5656ead | 226 | function, paddress (target_gdbarch (), memaddr), |
5af949e3 | 227 | message, safe_string); |
c906108c SS |
228 | } |
229 | ||
230 | /* Convert hex digit A to a number. */ | |
231 | ||
232 | static int | |
fba45db2 | 233 | fromhex (int a) |
c906108c SS |
234 | { |
235 | if (a >= '0' && a <= '9') | |
236 | return a - '0'; | |
237 | else if (a >= 'a' && a <= 'f') | |
238 | return a - 'a' + 10; | |
c5aa993b JM |
239 | else if (a >= 'A' && a <= 'F') |
240 | return a - 'A' + 10; | |
c906108c | 241 | else |
8a3fe4f8 | 242 | error (_("Invalid hex digit %d"), a); |
c906108c SS |
243 | } |
244 | ||
245 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
246 | ||
247 | This function exists to get around the problem that many host platforms | |
248 | don't have a printf that can print 64-bit addresses. The %A format | |
249 | specification is recognized as a special case, and causes the argument | |
250 | to be printed as a 64-bit hexadecimal address. | |
251 | ||
252 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
253 | If it is a '%s' format, the argument is a string; otherwise the | |
254 | argument is assumed to be a long integer. | |
255 | ||
025bb325 | 256 | %% is also turned into a single %. */ |
c5aa993b | 257 | |
c906108c | 258 | static void |
fba45db2 | 259 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
c906108c | 260 | { |
f5656ead | 261 | int addr_bit = gdbarch_addr_bit (target_gdbarch ()); |
c906108c SS |
262 | char format[10]; |
263 | char fmt; | |
264 | char *p; | |
265 | int i; | |
266 | long arg_int; | |
267 | CORE_ADDR arg_addr; | |
268 | char *arg_string; | |
269 | ||
270 | for (p = pattern; *p; p++) | |
271 | { | |
272 | if (*p == '%') | |
273 | { | |
274 | /* Copy the format specifier to a separate buffer. */ | |
275 | format[0] = *p++; | |
276 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
277 | i++, p++) | |
278 | format[i] = *p; | |
279 | format[i] = fmt = *p; | |
c5aa993b | 280 | format[i + 1] = '\0'; |
c906108c SS |
281 | |
282 | /* Fetch the next argument and print it. */ | |
283 | switch (fmt) | |
284 | { | |
285 | case '%': | |
286 | strcpy (sndbuf, "%"); | |
287 | break; | |
288 | case 'A': | |
289 | arg_addr = va_arg (args, CORE_ADDR); | |
5af949e3 | 290 | strcpy (sndbuf, phex_nz (arg_addr, addr_bit / 8)); |
c906108c SS |
291 | break; |
292 | case 's': | |
293 | arg_string = va_arg (args, char *); | |
294 | sprintf (sndbuf, format, arg_string); | |
295 | break; | |
296 | default: | |
297 | arg_int = va_arg (args, long); | |
298 | sprintf (sndbuf, format, arg_int); | |
299 | break; | |
300 | } | |
301 | sndbuf += strlen (sndbuf); | |
302 | } | |
303 | else | |
304 | *sndbuf++ = *p; | |
305 | } | |
306 | *sndbuf = '\0'; | |
307 | } | |
308 | ||
309 | ||
310 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
311 | Works just like printf. */ | |
312 | ||
313 | void | |
c5aa993b | 314 | monitor_printf_noecho (char *pattern,...) |
c906108c SS |
315 | { |
316 | va_list args; | |
317 | char sndbuf[2000]; | |
318 | int len; | |
319 | ||
c906108c | 320 | va_start (args, pattern); |
c906108c SS |
321 | |
322 | monitor_vsprintf (sndbuf, pattern, args); | |
323 | ||
324 | len = strlen (sndbuf); | |
325 | if (len + 1 > sizeof sndbuf) | |
3e43a32a MS |
326 | internal_error (__FILE__, __LINE__, |
327 | _("failed internal consistency check")); | |
c906108c | 328 | |
2df3850c | 329 | if (monitor_debug_p) |
c906108c SS |
330 | { |
331 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
b8d56208 | 332 | |
2df3850c JM |
333 | monitor_printable_string (safe_string, sndbuf, 0); |
334 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c | 335 | } |
c5aa993b | 336 | |
c906108c SS |
337 | monitor_write (sndbuf, len); |
338 | } | |
339 | ||
340 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
341 | printf. */ | |
342 | ||
343 | void | |
c5aa993b | 344 | monitor_printf (char *pattern,...) |
c906108c SS |
345 | { |
346 | va_list args; | |
347 | char sndbuf[2000]; | |
348 | int len; | |
349 | ||
c906108c | 350 | va_start (args, pattern); |
c906108c SS |
351 | |
352 | monitor_vsprintf (sndbuf, pattern, args); | |
353 | ||
354 | len = strlen (sndbuf); | |
355 | if (len + 1 > sizeof sndbuf) | |
3e43a32a MS |
356 | internal_error (__FILE__, __LINE__, |
357 | _("failed internal consistency check")); | |
c906108c | 358 | |
2df3850c | 359 | if (monitor_debug_p) |
c906108c SS |
360 | { |
361 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
b8d56208 | 362 | |
2df3850c JM |
363 | monitor_printable_string (safe_string, sndbuf, 0); |
364 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c SS |
365 | } |
366 | ||
367 | monitor_write (sndbuf, len); | |
368 | ||
3e43a32a MS |
369 | /* We used to expect that the next immediate output was the |
370 | characters we just output, but sometimes some extra junk appeared | |
371 | before the characters we expected, like an extra prompt, or a | |
372 | portmaster sending telnet negotiations. So, just start searching | |
373 | for what we sent, and skip anything unknown. */ | |
2df3850c JM |
374 | monitor_debug ("ExpectEcho\n"); |
375 | monitor_expect (sndbuf, (char *) 0, 0); | |
c906108c SS |
376 | } |
377 | ||
378 | ||
379 | /* Write characters to the remote system. */ | |
380 | ||
381 | void | |
fba45db2 | 382 | monitor_write (char *buf, int buflen) |
c906108c | 383 | { |
2cd58942 AC |
384 | if (serial_write (monitor_desc, buf, buflen)) |
385 | fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", | |
c906108c SS |
386 | safe_strerror (errno)); |
387 | } | |
388 | ||
389 | ||
390 | /* Read a binary character from the remote system, doing all the fancy | |
391 | timeout stuff, but without interpreting the character in any way, | |
392 | and without printing remote debug information. */ | |
393 | ||
394 | int | |
fba45db2 | 395 | monitor_readchar (void) |
c906108c SS |
396 | { |
397 | int c; | |
398 | int looping; | |
399 | ||
400 | do | |
401 | { | |
402 | looping = 0; | |
2cd58942 | 403 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
404 | |
405 | if (c >= 0) | |
c5aa993b | 406 | c &= 0xff; /* don't lose bit 7 */ |
c906108c SS |
407 | } |
408 | while (looping); | |
409 | ||
410 | if (c >= 0) | |
411 | return c; | |
412 | ||
413 | if (c == SERIAL_TIMEOUT) | |
8a3fe4f8 | 414 | error (_("Timeout reading from remote system.")); |
c906108c | 415 | |
e2e0b3e5 | 416 | perror_with_name (_("remote-monitor")); |
c906108c SS |
417 | } |
418 | ||
419 | ||
420 | /* Read a character from the remote system, doing all the fancy | |
421 | timeout stuff. */ | |
422 | ||
423 | static int | |
fba45db2 | 424 | readchar (int timeout) |
c906108c SS |
425 | { |
426 | int c; | |
c5aa993b JM |
427 | static enum |
428 | { | |
429 | last_random, last_nl, last_cr, last_crnl | |
430 | } | |
431 | state = last_random; | |
c906108c SS |
432 | int looping; |
433 | ||
434 | do | |
435 | { | |
436 | looping = 0; | |
2cd58942 | 437 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
438 | |
439 | if (c >= 0) | |
440 | { | |
441 | c &= 0x7f; | |
c906108c | 442 | /* This seems to interfere with proper function of the |
025bb325 | 443 | input stream. */ |
2df3850c | 444 | if (monitor_debug_p || remote_debug) |
c906108c SS |
445 | { |
446 | char buf[2]; | |
b8d56208 | 447 | |
c906108c SS |
448 | buf[0] = c; |
449 | buf[1] = '\0'; | |
450 | puts_debug ("read -->", buf, "<--"); | |
451 | } | |
c5aa993b | 452 | |
c906108c SS |
453 | } |
454 | ||
025bb325 | 455 | /* Canonicialize \n\r combinations into one \r. */ |
c906108c SS |
456 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) |
457 | { | |
458 | if ((c == '\r' && state == last_nl) | |
459 | || (c == '\n' && state == last_cr)) | |
460 | { | |
461 | state = last_crnl; | |
462 | looping = 1; | |
463 | } | |
464 | else if (c == '\r') | |
465 | state = last_cr; | |
466 | else if (c != '\n') | |
467 | state = last_random; | |
468 | else | |
469 | { | |
470 | state = last_nl; | |
471 | c = '\r'; | |
472 | } | |
473 | } | |
474 | } | |
475 | while (looping); | |
476 | ||
477 | if (c >= 0) | |
478 | return c; | |
479 | ||
480 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 481 | #if 0 |
025bb325 MS |
482 | /* I fail to see how detaching here can be useful. */ |
483 | if (in_monitor_wait) /* Watchdog went off. */ | |
c906108c SS |
484 | { |
485 | target_mourn_inferior (); | |
8a3fe4f8 | 486 | error (_("GDB serial timeout has expired. Target detached.")); |
c906108c SS |
487 | } |
488 | else | |
489 | #endif | |
8a3fe4f8 | 490 | error (_("Timeout reading from remote system.")); |
c906108c | 491 | |
e2e0b3e5 | 492 | perror_with_name (_("remote-monitor")); |
c906108c SS |
493 | } |
494 | ||
495 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
496 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
497 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
498 | because STRING can't be found, return -1, else return number of chars in BUF | |
499 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
500 | will be at the end of BUF. */ | |
501 | ||
502 | int | |
fba45db2 | 503 | monitor_expect (char *string, char *buf, int buflen) |
c906108c SS |
504 | { |
505 | char *p = string; | |
506 | int obuflen = buflen; | |
507 | int c; | |
c906108c | 508 | |
2df3850c | 509 | if (monitor_debug_p) |
c906108c SS |
510 | { |
511 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
2df3850c JM |
512 | monitor_printable_string (safe_string, string, 0); |
513 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); | |
c906108c SS |
514 | } |
515 | ||
8edbea78 | 516 | immediate_quit++; |
522002f9 | 517 | QUIT; |
c906108c SS |
518 | while (1) |
519 | { | |
520 | if (buf) | |
521 | { | |
522 | if (buflen < 2) | |
523 | { | |
524 | *buf = '\000'; | |
8edbea78 | 525 | immediate_quit--; |
c906108c SS |
526 | return -1; |
527 | } | |
528 | ||
529 | c = readchar (timeout); | |
530 | if (c == '\000') | |
531 | continue; | |
532 | *buf++ = c; | |
533 | buflen--; | |
534 | } | |
535 | else | |
536 | c = readchar (timeout); | |
537 | ||
025bb325 | 538 | /* Don't expect any ^C sent to be echoed. */ |
c5aa993b | 539 | |
c906108c SS |
540 | if (*p == '\003' || c == *p) |
541 | { | |
542 | p++; | |
543 | if (*p == '\0') | |
544 | { | |
8edbea78 | 545 | immediate_quit--; |
c906108c SS |
546 | |
547 | if (buf) | |
548 | { | |
549 | *buf++ = '\000'; | |
550 | return obuflen - buflen; | |
551 | } | |
552 | else | |
553 | return 0; | |
554 | } | |
555 | } | |
c906108c SS |
556 | else |
557 | { | |
a0b3c4fd JM |
558 | /* We got a character that doesn't match the string. We need to |
559 | back up p, but how far? If we're looking for "..howdy" and the | |
560 | monitor sends "...howdy"? There's certainly a match in there, | |
561 | but when we receive the third ".", we won't find it if we just | |
562 | restart the matching at the beginning of the string. | |
563 | ||
564 | This is a Boyer-Moore kind of situation. We want to reset P to | |
565 | the end of the longest prefix of STRING that is a suffix of | |
566 | what we've read so far. In the example above, that would be | |
567 | ".." --- the longest prefix of "..howdy" that is a suffix of | |
568 | "...". This longest prefix could be the empty string, if C | |
569 | is nowhere to be found in STRING. | |
570 | ||
571 | If this longest prefix is not the empty string, it must contain | |
572 | C, so let's search from the end of STRING for instances of C, | |
573 | and see if the portion of STRING before that is a suffix of | |
574 | what we read before C. Actually, we can search backwards from | |
575 | p, since we know no prefix can be longer than that. | |
576 | ||
577 | Note that we can use STRING itself, along with C, as a record | |
025bb325 | 578 | of what we've received so far. :) */ |
a0b3c4fd JM |
579 | int i; |
580 | ||
581 | for (i = (p - string) - 1; i >= 0; i--) | |
582 | if (string[i] == c) | |
583 | { | |
584 | /* Is this prefix a suffix of what we've read so far? | |
585 | In other words, does | |
025bb325 | 586 | string[0 .. i-1] == string[p - i, p - 1]? */ |
a0b3c4fd JM |
587 | if (! memcmp (string, p - i, i)) |
588 | { | |
589 | p = string + i + 1; | |
590 | break; | |
591 | } | |
592 | } | |
593 | if (i < 0) | |
594 | p = string; | |
c906108c SS |
595 | } |
596 | } | |
597 | } | |
598 | ||
599 | /* Search for a regexp. */ | |
600 | ||
601 | static int | |
fba45db2 | 602 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
c906108c SS |
603 | { |
604 | char *mybuf; | |
605 | char *p; | |
b8d56208 | 606 | |
2df3850c | 607 | monitor_debug ("MON Expecting regexp\n"); |
c906108c SS |
608 | if (buf) |
609 | mybuf = buf; | |
610 | else | |
611 | { | |
d4f3574e SS |
612 | mybuf = alloca (TARGET_BUF_SIZE); |
613 | buflen = TARGET_BUF_SIZE; | |
c906108c SS |
614 | } |
615 | ||
616 | p = mybuf; | |
617 | while (1) | |
618 | { | |
619 | int retval; | |
620 | ||
621 | if (p - mybuf >= buflen) | |
025bb325 | 622 | { /* Buffer about to overflow. */ |
c906108c SS |
623 | |
624 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
025bb325 | 625 | great, but it usually works... */ |
c906108c SS |
626 | |
627 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
628 | p = mybuf + buflen / 2; | |
629 | } | |
630 | ||
631 | *p++ = readchar (timeout); | |
632 | ||
633 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
634 | if (retval >= 0) | |
635 | return 1; | |
636 | } | |
637 | } | |
638 | ||
639 | /* Keep discarding input until we see the MONITOR prompt. | |
640 | ||
641 | The convention for dealing with the prompt is that you | |
642 | o give your command | |
643 | o *then* wait for the prompt. | |
644 | ||
645 | Thus the last thing that a procedure does with the serial line will | |
646 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
647 | wait for the prompt, because the terminal is being handed over to | |
648 | the inferior. However, the next thing which happens after that is | |
649 | a monitor_wait which does wait for the prompt. Note that this | |
650 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
651 | getting into states from which we can't recover. */ | |
652 | ||
653 | int | |
fba45db2 | 654 | monitor_expect_prompt (char *buf, int buflen) |
c906108c | 655 | { |
2df3850c JM |
656 | monitor_debug ("MON Expecting prompt\n"); |
657 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
c906108c SS |
658 | } |
659 | ||
660 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
661 | them in registers starting at REGNO. */ | |
662 | ||
663 | #if 0 | |
664 | static unsigned long | |
fba45db2 | 665 | get_hex_word (void) |
c906108c SS |
666 | { |
667 | unsigned long val; | |
668 | int i; | |
669 | int ch; | |
670 | ||
671 | do | |
672 | ch = readchar (timeout); | |
c5aa993b | 673 | while (isspace (ch)); |
c906108c SS |
674 | |
675 | val = from_hex (ch); | |
676 | ||
677 | for (i = 7; i >= 1; i--) | |
678 | { | |
679 | ch = readchar (timeout); | |
680 | if (!isxdigit (ch)) | |
681 | break; | |
682 | val = (val << 4) | from_hex (ch); | |
683 | } | |
684 | ||
685 | return val; | |
686 | } | |
687 | #endif | |
688 | ||
689 | static void | |
fba45db2 KB |
690 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
691 | char *fastmap) | |
c906108c SS |
692 | { |
693 | int tmp; | |
694 | const char *val; | |
695 | ||
696 | compiled_pattern->fastmap = fastmap; | |
697 | ||
698 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
699 | val = re_compile_pattern (pattern, | |
700 | strlen (pattern), | |
701 | compiled_pattern); | |
702 | re_set_syntax (tmp); | |
703 | ||
704 | if (val) | |
3e43a32a MS |
705 | error (_("compile_pattern: Can't compile pattern string `%s': %s!"), |
706 | pattern, val); | |
c906108c SS |
707 | |
708 | if (fastmap) | |
709 | re_compile_fastmap (compiled_pattern); | |
710 | } | |
711 | ||
025bb325 | 712 | /* Open a connection to a remote debugger. NAME is the filename used |
c906108c SS |
713 | for communication. */ |
714 | ||
715 | void | |
fba45db2 | 716 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
c906108c SS |
717 | { |
718 | char *name; | |
719 | char **p; | |
6c95b8df | 720 | struct inferior *inf; |
c906108c SS |
721 | |
722 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
8a3fe4f8 | 723 | error (_("Magic number of monitor_ops struct wrong.")); |
c906108c SS |
724 | |
725 | targ_ops = mon_ops->target; | |
726 | name = targ_ops->to_shortname; | |
727 | ||
728 | if (!args) | |
cce7e648 | 729 | error (_("Use `target %s DEVICE-NAME' to use a serial port, or\n\ |
8a3fe4f8 | 730 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name); |
c906108c SS |
731 | |
732 | target_preopen (from_tty); | |
733 | ||
025bb325 | 734 | /* Setup pattern for register dump. */ |
c906108c SS |
735 | |
736 | if (mon_ops->register_pattern) | |
737 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
738 | register_fastmap); | |
739 | ||
740 | if (mon_ops->getmem.resp_delim) | |
741 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
742 | getmem_resp_delim_fastmap); | |
743 | ||
1456ad8e AC |
744 | if (mon_ops->setmem.resp_delim) |
745 | compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern, | |
746 | setmem_resp_delim_fastmap); | |
747 | ||
748 | if (mon_ops->setreg.resp_delim) | |
749 | compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern, | |
750 | setreg_resp_delim_fastmap); | |
751 | ||
c906108c SS |
752 | unpush_target (targ_ops); |
753 | ||
754 | if (dev_name) | |
b8c9b27d | 755 | xfree (dev_name); |
4fcf66da | 756 | dev_name = xstrdup (args); |
c906108c | 757 | |
2cd58942 | 758 | monitor_desc = serial_open (dev_name); |
c906108c SS |
759 | |
760 | if (!monitor_desc) | |
761 | perror_with_name (dev_name); | |
762 | ||
763 | if (baud_rate != -1) | |
764 | { | |
2cd58942 | 765 | if (serial_setbaudrate (monitor_desc, baud_rate)) |
c906108c | 766 | { |
2cd58942 | 767 | serial_close (monitor_desc); |
c906108c SS |
768 | perror_with_name (dev_name); |
769 | } | |
770 | } | |
c5aa993b | 771 | |
2cd58942 | 772 | serial_raw (monitor_desc); |
c906108c | 773 | |
2cd58942 | 774 | serial_flush_input (monitor_desc); |
c906108c | 775 | |
025bb325 | 776 | /* some systems only work with 2 stop bits. */ |
c906108c | 777 | |
2cd58942 | 778 | serial_setstopbits (monitor_desc, mon_ops->stopbits); |
c906108c SS |
779 | |
780 | current_monitor = mon_ops; | |
781 | ||
782 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
783 | then send the init strings. Last, remove all breakpoints. */ | |
784 | ||
785 | if (current_monitor->stop) | |
786 | { | |
1eab8a48 | 787 | monitor_stop (targ_ops, inferior_ptid); |
c906108c | 788 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 789 | { |
2df3850c | 790 | monitor_debug ("EXP Open echo\n"); |
c5aa993b JM |
791 | monitor_expect_prompt (NULL, 0); |
792 | } | |
c906108c SS |
793 | } |
794 | ||
025bb325 | 795 | /* wake up the monitor and see if it's alive. */ |
c906108c SS |
796 | for (p = mon_ops->init; *p != NULL; p++) |
797 | { | |
798 | /* Some of the characters we send may not be echoed, | |
025bb325 | 799 | but we hope to get a prompt at the end of it all. */ |
c5aa993b | 800 | |
c906108c | 801 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 802 | monitor_printf (*p); |
c906108c | 803 | else |
c5aa993b | 804 | monitor_printf_noecho (*p); |
c906108c SS |
805 | monitor_expect_prompt (NULL, 0); |
806 | } | |
807 | ||
2cd58942 | 808 | serial_flush_input (monitor_desc); |
c906108c | 809 | |
9e086581 JM |
810 | /* Alloc breakpoints */ |
811 | if (mon_ops->set_break != NULL) | |
812 | { | |
813 | if (mon_ops->num_breakpoints == 0) | |
814 | mon_ops->num_breakpoints = 8; | |
815 | ||
3e43a32a MS |
816 | breakaddr = (CORE_ADDR *) |
817 | xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
9e086581 JM |
818 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); |
819 | } | |
820 | ||
025bb325 | 821 | /* Remove all breakpoints. */ |
c906108c SS |
822 | |
823 | if (mon_ops->clr_all_break) | |
824 | { | |
825 | monitor_printf (mon_ops->clr_all_break); | |
826 | monitor_expect_prompt (NULL, 0); | |
827 | } | |
828 | ||
829 | if (from_tty) | |
3e43a32a MS |
830 | printf_unfiltered (_("Remote target %s connected to %s\n"), |
831 | name, dev_name); | |
c906108c SS |
832 | |
833 | push_target (targ_ops); | |
834 | ||
c0a2216e PA |
835 | /* Start afresh. */ |
836 | init_thread_list (); | |
837 | ||
5e0b29c1 PA |
838 | /* Make run command think we are busy... */ |
839 | inferior_ptid = monitor_ptid; | |
6c95b8df PA |
840 | inf = current_inferior (); |
841 | inferior_appeared (inf, ptid_get_pid (inferior_ptid)); | |
5e0b29c1 | 842 | add_thread_silent (inferior_ptid); |
c906108c | 843 | |
025bb325 | 844 | /* Give monitor_wait something to read. */ |
c906108c SS |
845 | |
846 | monitor_printf (current_monitor->line_term); | |
847 | ||
6e586cc5 YQ |
848 | init_wait_for_inferior (); |
849 | ||
8621d6a9 | 850 | start_remote (from_tty); |
c906108c SS |
851 | } |
852 | ||
853 | /* Close out all files and local state before this target loses | |
854 | control. */ | |
855 | ||
856 | void | |
de90e03d | 857 | monitor_close (struct target_ops *self) |
c906108c SS |
858 | { |
859 | if (monitor_desc) | |
2cd58942 | 860 | serial_close (monitor_desc); |
9e086581 | 861 | |
025bb325 | 862 | /* Free breakpoint memory. */ |
9e086581 JM |
863 | if (breakaddr != NULL) |
864 | { | |
b8c9b27d | 865 | xfree (breakaddr); |
9e086581 JM |
866 | breakaddr = NULL; |
867 | } | |
868 | ||
c906108c | 869 | monitor_desc = NULL; |
5e0b29c1 PA |
870 | |
871 | delete_thread_silent (monitor_ptid); | |
7f9f62ba | 872 | delete_inferior_silent (ptid_get_pid (monitor_ptid)); |
c906108c SS |
873 | } |
874 | ||
875 | /* Terminate the open connection to the remote debugger. Use this | |
876 | when you want to detach and do something else with your gdb. */ | |
877 | ||
878 | static void | |
52554a0e | 879 | monitor_detach (struct target_ops *ops, const char *args, int from_tty) |
c906108c | 880 | { |
7fdc1521 | 881 | unpush_target (ops); /* calls monitor_close to do the real work. */ |
c906108c | 882 | if (from_tty) |
a3f17187 | 883 | printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname); |
c906108c SS |
884 | } |
885 | ||
886 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
887 | ||
888 | char * | |
c410a84c | 889 | monitor_supply_register (struct regcache *regcache, int regno, char *valstr) |
c906108c | 890 | { |
e17a4113 UW |
891 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
892 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); | |
d4f3574e | 893 | ULONGEST val; |
123a958e | 894 | unsigned char regbuf[MAX_REGISTER_SIZE]; |
c906108c SS |
895 | char *p; |
896 | ||
4ce44c66 | 897 | val = 0; |
d4f3574e SS |
898 | p = valstr; |
899 | while (p && *p != '\0') | |
900 | { | |
901 | if (*p == '\r' || *p == '\n') | |
902 | { | |
903 | while (*p != '\0') | |
904 | p++; | |
905 | break; | |
906 | } | |
907 | if (isspace (*p)) | |
908 | { | |
909 | p++; | |
910 | continue; | |
911 | } | |
912 | if (!isxdigit (*p) && *p != 'x') | |
913 | { | |
914 | break; | |
915 | } | |
916 | ||
917 | val <<= 4; | |
918 | val += fromhex (*p++); | |
919 | } | |
2df3850c | 920 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
c906108c | 921 | |
1fcef334 | 922 | if (val == 0 && valstr == p) |
8a3fe4f8 | 923 | error (_("monitor_supply_register (%d): bad value from monitor: %s."), |
c906108c SS |
924 | regno, valstr); |
925 | ||
025bb325 | 926 | /* supply register stores in target byte order, so swap here. */ |
c906108c | 927 | |
e17a4113 | 928 | store_unsigned_integer (regbuf, register_size (gdbarch, regno), byte_order, |
9b072297 | 929 | val); |
c906108c | 930 | |
c410a84c | 931 | regcache_raw_supply (regcache, regno, regbuf); |
c906108c SS |
932 | |
933 | return p; | |
934 | } | |
935 | ||
936 | /* Tell the remote machine to resume. */ | |
937 | ||
c906108c | 938 | static void |
28439f5e | 939 | monitor_resume (struct target_ops *ops, |
2ea28649 | 940 | ptid_t ptid, int step, enum gdb_signal sig) |
c906108c | 941 | { |
025bb325 | 942 | /* Some monitors require a different command when starting a program. */ |
2df3850c | 943 | monitor_debug ("MON resume\n"); |
c906108c SS |
944 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
945 | { | |
946 | first_time = 0; | |
947 | monitor_printf ("run\r"); | |
948 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
c5aa993b | 949 | dump_reg_flag = 1; |
c906108c SS |
950 | return; |
951 | } | |
c906108c SS |
952 | if (step) |
953 | monitor_printf (current_monitor->step); | |
954 | else | |
955 | { | |
956 | if (current_monitor->continue_hook) | |
c5aa993b JM |
957 | (*current_monitor->continue_hook) (); |
958 | else | |
959 | monitor_printf (current_monitor->cont); | |
c906108c SS |
960 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
961 | dump_reg_flag = 1; | |
962 | } | |
963 | } | |
964 | ||
965 | /* Parse the output of a register dump command. A monitor specific | |
966 | regexp is used to extract individual register descriptions of the | |
967 | form REG=VAL. Each description is split up into a name and a value | |
968 | string which are passed down to monitor specific code. */ | |
969 | ||
970 | static void | |
c410a84c | 971 | parse_register_dump (struct regcache *regcache, char *buf, int len) |
c906108c | 972 | { |
2df3850c JM |
973 | monitor_debug ("MON Parsing register dump\n"); |
974 | while (1) | |
c906108c SS |
975 | { |
976 | int regnamelen, vallen; | |
977 | char *regname, *val; | |
b8d56208 | 978 | |
c906108c | 979 | /* Element 0 points to start of register name, and element 1 |
c5aa993b | 980 | points to the start of the register value. */ |
c906108c SS |
981 | struct re_registers register_strings; |
982 | ||
983 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
984 | ||
985 | if (re_search (®ister_pattern, buf, len, 0, len, | |
986 | ®ister_strings) == -1) | |
987 | break; | |
988 | ||
989 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
990 | regname = buf + register_strings.start[1]; | |
991 | vallen = register_strings.end[2] - register_strings.start[2]; | |
992 | val = buf + register_strings.start[2]; | |
993 | ||
c410a84c UW |
994 | current_monitor->supply_register (regcache, regname, regnamelen, |
995 | val, vallen); | |
c906108c SS |
996 | |
997 | buf += register_strings.end[0]; | |
998 | len -= register_strings.end[0]; | |
999 | } | |
1000 | } | |
1001 | ||
1002 | /* Send ^C to target to halt it. Target will respond, and send us a | |
1003 | packet. */ | |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | monitor_interrupt (int signo) |
c906108c SS |
1007 | { |
1008 | /* If this doesn't work, try more severe steps. */ | |
1009 | signal (signo, monitor_interrupt_twice); | |
c5aa993b | 1010 | |
2df3850c JM |
1011 | if (monitor_debug_p || remote_debug) |
1012 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); | |
c906108c | 1013 | |
f9c72d52 | 1014 | target_stop (inferior_ptid); |
c906108c SS |
1015 | } |
1016 | ||
1017 | /* The user typed ^C twice. */ | |
1018 | ||
1019 | static void | |
fba45db2 | 1020 | monitor_interrupt_twice (int signo) |
c906108c SS |
1021 | { |
1022 | signal (signo, ofunc); | |
c5aa993b | 1023 | |
c906108c SS |
1024 | monitor_interrupt_query (); |
1025 | ||
1026 | signal (signo, monitor_interrupt); | |
1027 | } | |
1028 | ||
1029 | /* Ask the user what to do when an interrupt is received. */ | |
1030 | ||
1031 | static void | |
fba45db2 | 1032 | monitor_interrupt_query (void) |
c906108c SS |
1033 | { |
1034 | target_terminal_ours (); | |
1035 | ||
9e2f0ad4 HZ |
1036 | if (query (_("Interrupted while waiting for the program.\n\ |
1037 | Give up (and stop debugging it)? "))) | |
c906108c SS |
1038 | { |
1039 | target_mourn_inferior (); | |
039e3c22 | 1040 | quit (); |
c906108c SS |
1041 | } |
1042 | ||
1043 | target_terminal_inferior (); | |
1044 | } | |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | monitor_wait_cleanup (void *old_timeout) |
c906108c | 1048 | { |
c5aa993b | 1049 | timeout = *(int *) old_timeout; |
c906108c SS |
1050 | signal (SIGINT, ofunc); |
1051 | in_monitor_wait = 0; | |
1052 | } | |
1053 | ||
1054 | ||
1055 | ||
a78f21af | 1056 | static void |
c5aa993b JM |
1057 | monitor_wait_filter (char *buf, |
1058 | int bufmax, | |
1059 | int *ext_resp_len, | |
a78f21af | 1060 | struct target_waitstatus *status) |
c906108c | 1061 | { |
c5aa993b | 1062 | int resp_len; |
b8d56208 | 1063 | |
c906108c SS |
1064 | do |
1065 | { | |
1066 | resp_len = monitor_expect_prompt (buf, bufmax); | |
c5aa993b | 1067 | *ext_resp_len = resp_len; |
c906108c SS |
1068 | |
1069 | if (resp_len <= 0) | |
3e43a32a MS |
1070 | fprintf_unfiltered (gdb_stderr, |
1071 | "monitor_wait: excessive " | |
1072 | "response from monitor: %s.", buf); | |
c906108c SS |
1073 | } |
1074 | while (resp_len < 0); | |
1075 | ||
1076 | /* Print any output characters that were preceded by ^O. */ | |
025bb325 | 1077 | /* FIXME - This would be great as a user settabgle flag. */ |
2df3850c JM |
1078 | if (monitor_debug_p || remote_debug |
1079 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1080 | { |
1081 | int i; | |
1082 | ||
1083 | for (i = 0; i < resp_len - 1; i++) | |
1084 | if (buf[i] == 0x0f) | |
1085 | putchar_unfiltered (buf[++i]); | |
1086 | } | |
1087 | } | |
1088 | ||
1089 | ||
1090 | ||
1091 | /* Wait until the remote machine stops, then return, storing status in | |
1092 | status just as `wait' would. */ | |
1093 | ||
39f77062 | 1094 | static ptid_t |
117de6a9 | 1095 | monitor_wait (struct target_ops *ops, |
47608cb1 | 1096 | ptid_t ptid, struct target_waitstatus *status, int options) |
c906108c SS |
1097 | { |
1098 | int old_timeout = timeout; | |
d4f3574e | 1099 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1100 | int resp_len; |
1101 | struct cleanup *old_chain; | |
1102 | ||
1103 | status->kind = TARGET_WAITKIND_EXITED; | |
1104 | status->value.integer = 0; | |
1105 | ||
1106 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
2df3850c | 1107 | monitor_debug ("MON wait\n"); |
c906108c | 1108 | |
7a292a7a | 1109 | #if 0 |
025bb325 | 1110 | /* This is somthing other than a maintenance command. */ |
c5aa993b | 1111 | in_monitor_wait = 1; |
c906108c SS |
1112 | timeout = watchdog > 0 ? watchdog : -1; |
1113 | #else | |
025bb325 | 1114 | timeout = -1; /* Don't time out -- user program is running. */ |
c906108c SS |
1115 | #endif |
1116 | ||
1117 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1118 | ||
1119 | if (current_monitor->wait_filter) | |
c5aa993b JM |
1120 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
1121 | else | |
1122 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); | |
1123 | ||
025bb325 | 1124 | #if 0 /* Transferred to monitor wait filter. */ |
c906108c SS |
1125 | do |
1126 | { | |
1127 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1128 | ||
1129 | if (resp_len <= 0) | |
3e43a32a MS |
1130 | fprintf_unfiltered (gdb_stderr, |
1131 | "monitor_wait: excessive " | |
1132 | "response from monitor: %s.", buf); | |
c906108c SS |
1133 | } |
1134 | while (resp_len < 0); | |
1135 | ||
1136 | /* Print any output characters that were preceded by ^O. */ | |
025bb325 | 1137 | /* FIXME - This would be great as a user settabgle flag. */ |
2df3850c JM |
1138 | if (monitor_debug_p || remote_debug |
1139 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1140 | { |
1141 | int i; | |
1142 | ||
1143 | for (i = 0; i < resp_len - 1; i++) | |
1144 | if (buf[i] == 0x0f) | |
1145 | putchar_unfiltered (buf[++i]); | |
1146 | } | |
c5aa993b | 1147 | #endif |
c906108c SS |
1148 | |
1149 | signal (SIGINT, ofunc); | |
1150 | ||
1151 | timeout = old_timeout; | |
1152 | #if 0 | |
1153 | if (dump_reg_flag && current_monitor->dump_registers) | |
1154 | { | |
1155 | dump_reg_flag = 0; | |
1156 | monitor_printf (current_monitor->dump_registers); | |
1157 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1158 | } | |
1159 | ||
1160 | if (current_monitor->register_pattern) | |
594f7785 | 1161 | parse_register_dump (get_current_regcache (), buf, resp_len); |
c906108c | 1162 | #else |
2df3850c | 1163 | monitor_debug ("Wait fetching registers after stop\n"); |
594f7785 | 1164 | monitor_dump_regs (get_current_regcache ()); |
c5aa993b | 1165 | #endif |
c906108c SS |
1166 | |
1167 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 1168 | status->value.sig = GDB_SIGNAL_TRAP; |
c906108c SS |
1169 | |
1170 | discard_cleanups (old_chain); | |
1171 | ||
1172 | in_monitor_wait = 0; | |
1173 | ||
39f77062 | 1174 | return inferior_ptid; |
c906108c SS |
1175 | } |
1176 | ||
025bb325 | 1177 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns |
c906108c SS |
1178 | errno value. */ |
1179 | ||
1180 | static void | |
56be3814 | 1181 | monitor_fetch_register (struct regcache *regcache, int regno) |
c906108c | 1182 | { |
444199e7 | 1183 | const char *name; |
86110418 MS |
1184 | char *zerobuf; |
1185 | char *regbuf; | |
c906108c SS |
1186 | int i; |
1187 | ||
d9d9c31f AC |
1188 | regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1); |
1189 | zerobuf = alloca (MAX_REGISTER_SIZE); | |
1190 | memset (zerobuf, 0, MAX_REGISTER_SIZE); | |
86110418 | 1191 | |
1c617db8 GS |
1192 | if (current_monitor->regname != NULL) |
1193 | name = current_monitor->regname (regno); | |
1194 | else | |
1195 | name = current_monitor->regnames[regno]; | |
2df3850c | 1196 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
c906108c | 1197 | |
2df3850c | 1198 | if (!name || (*name == '\0')) |
7a292a7a | 1199 | { |
2df3850c | 1200 | monitor_debug ("No register known for %d\n", regno); |
56be3814 | 1201 | regcache_raw_supply (regcache, regno, zerobuf); |
c906108c SS |
1202 | return; |
1203 | } | |
1204 | ||
025bb325 | 1205 | /* Send the register examine command. */ |
c906108c SS |
1206 | |
1207 | monitor_printf (current_monitor->getreg.cmd, name); | |
1208 | ||
1209 | /* If RESP_DELIM is specified, we search for that as a leading | |
1210 | delimiter for the register value. Otherwise, we just start | |
1211 | searching from the start of the buf. */ | |
1212 | ||
1213 | if (current_monitor->getreg.resp_delim) | |
1214 | { | |
2df3850c JM |
1215 | monitor_debug ("EXP getreg.resp_delim\n"); |
1216 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
c906108c SS |
1217 | /* Handle case of first 32 registers listed in pairs. */ |
1218 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a | 1219 | && (regno & 1) != 0 && regno < 32) |
c5aa993b | 1220 | { |
2df3850c | 1221 | monitor_debug ("EXP getreg.resp_delim\n"); |
c906108c SS |
1222 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1223 | } | |
1224 | } | |
1225 | ||
025bb325 | 1226 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ |
c5aa993b | 1227 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1228 | { |
1229 | int c; | |
b8d56208 | 1230 | |
c906108c SS |
1231 | c = readchar (timeout); |
1232 | while (c == ' ') | |
1233 | c = readchar (timeout); | |
1234 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1235 | ; | |
1236 | else | |
3e43a32a MS |
1237 | error (_("Bad value returned from monitor " |
1238 | "while fetching register %x."), | |
c5aa993b | 1239 | regno); |
c906108c SS |
1240 | } |
1241 | ||
1242 | /* Read upto the maximum number of hex digits for this register, skipping | |
1243 | spaces, but stop reading if something else is seen. Some monitors | |
1244 | like to drop leading zeros. */ | |
1245 | ||
9b072297 | 1246 | for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++) |
c906108c SS |
1247 | { |
1248 | int c; | |
b8d56208 | 1249 | |
c906108c SS |
1250 | c = readchar (timeout); |
1251 | while (c == ' ') | |
1252 | c = readchar (timeout); | |
1253 | ||
1254 | if (!isxdigit (c)) | |
1255 | break; | |
1256 | ||
1257 | regbuf[i] = c; | |
1258 | } | |
1259 | ||
025bb325 | 1260 | regbuf[i] = '\000'; /* Terminate the number. */ |
2df3850c | 1261 | monitor_debug ("REGVAL '%s'\n", regbuf); |
c906108c SS |
1262 | |
1263 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1264 | is present), we will send TERM_CMD if that is present. In any | |
1265 | case, we collect all of the output into buf, and then wait for | |
1266 | the normal prompt. */ | |
1267 | ||
1268 | if (current_monitor->getreg.term) | |
1269 | { | |
2df3850c | 1270 | monitor_debug ("EXP getreg.term\n"); |
025bb325 MS |
1271 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* Get |
1272 | response. */ | |
c906108c SS |
1273 | } |
1274 | ||
1275 | if (current_monitor->getreg.term_cmd) | |
c5aa993b | 1276 | { |
2df3850c JM |
1277 | monitor_debug ("EMIT getreg.term.cmd\n"); |
1278 | monitor_printf (current_monitor->getreg.term_cmd); | |
c906108c | 1279 | } |
c5aa993b | 1280 | if (!current_monitor->getreg.term || /* Already expected or */ |
025bb325 MS |
1281 | current_monitor->getreg.term_cmd) /* ack expected. */ |
1282 | monitor_expect_prompt (NULL, 0); /* Get response. */ | |
c906108c | 1283 | |
56be3814 | 1284 | monitor_supply_register (regcache, regno, regbuf); |
c906108c SS |
1285 | } |
1286 | ||
025bb325 | 1287 | /* Sometimes, it takes several commands to dump the registers. */ |
c906108c | 1288 | /* This is a primitive for use by variations of monitor interfaces in |
025bb325 MS |
1289 | case they need to compose the operation. */ |
1290 | ||
c5aa993b | 1291 | int |
c410a84c | 1292 | monitor_dump_reg_block (struct regcache *regcache, char *block_cmd) |
c906108c | 1293 | { |
d4f3574e | 1294 | char buf[TARGET_BUF_SIZE]; |
c906108c | 1295 | int resp_len; |
b8d56208 | 1296 | |
c906108c SS |
1297 | monitor_printf (block_cmd); |
1298 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
c410a84c | 1299 | parse_register_dump (regcache, buf, resp_len); |
c5aa993b | 1300 | return 1; |
c906108c SS |
1301 | } |
1302 | ||
1303 | ||
1304 | /* Read the remote registers into the block regs. */ | |
025bb325 | 1305 | /* Call the specific function if it has been provided. */ |
c906108c SS |
1306 | |
1307 | static void | |
c410a84c | 1308 | monitor_dump_regs (struct regcache *regcache) |
c906108c | 1309 | { |
d4f3574e | 1310 | char buf[TARGET_BUF_SIZE]; |
c906108c | 1311 | int resp_len; |
b8d56208 | 1312 | |
c906108c | 1313 | if (current_monitor->dumpregs) |
025bb325 MS |
1314 | (*(current_monitor->dumpregs)) (regcache); /* Call supplied function. */ |
1315 | else if (current_monitor->dump_registers) /* Default version. */ | |
c5aa993b JM |
1316 | { |
1317 | monitor_printf (current_monitor->dump_registers); | |
c906108c | 1318 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
c410a84c | 1319 | parse_register_dump (regcache, buf, resp_len); |
c906108c SS |
1320 | } |
1321 | else | |
025bb325 | 1322 | /* Need some way to read registers. */ |
3e43a32a MS |
1323 | internal_error (__FILE__, __LINE__, |
1324 | _("failed internal consistency check")); | |
c906108c SS |
1325 | } |
1326 | ||
1327 | static void | |
28439f5e PA |
1328 | monitor_fetch_registers (struct target_ops *ops, |
1329 | struct regcache *regcache, int regno) | |
c906108c | 1330 | { |
2df3850c | 1331 | monitor_debug ("MON fetchregs\n"); |
c5aa993b | 1332 | if (current_monitor->getreg.cmd) |
c906108c SS |
1333 | { |
1334 | if (regno >= 0) | |
1335 | { | |
56be3814 | 1336 | monitor_fetch_register (regcache, regno); |
c906108c SS |
1337 | return; |
1338 | } | |
1339 | ||
9b072297 UW |
1340 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1341 | regno++) | |
56be3814 | 1342 | monitor_fetch_register (regcache, regno); |
c906108c | 1343 | } |
c5aa993b JM |
1344 | else |
1345 | { | |
56be3814 | 1346 | monitor_dump_regs (regcache); |
c5aa993b | 1347 | } |
c906108c SS |
1348 | } |
1349 | ||
1350 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1351 | ||
1352 | static void | |
56be3814 | 1353 | monitor_store_register (struct regcache *regcache, int regno) |
c906108c | 1354 | { |
5af949e3 | 1355 | int reg_size = register_size (get_regcache_arch (regcache), regno); |
444199e7 | 1356 | const char *name; |
d4f3574e | 1357 | ULONGEST val; |
1c617db8 GS |
1358 | |
1359 | if (current_monitor->regname != NULL) | |
1360 | name = current_monitor->regname (regno); | |
1361 | else | |
1362 | name = current_monitor->regnames[regno]; | |
1363 | ||
c906108c | 1364 | if (!name || (*name == '\0')) |
c5aa993b | 1365 | { |
2df3850c JM |
1366 | monitor_debug ("MON Cannot store unknown register\n"); |
1367 | return; | |
c906108c SS |
1368 | } |
1369 | ||
56be3814 | 1370 | regcache_cooked_read_unsigned (regcache, regno, &val); |
5af949e3 | 1371 | monitor_debug ("MON storeg %d %s\n", regno, phex (val, reg_size)); |
c906108c | 1372 | |
025bb325 | 1373 | /* Send the register deposit command. */ |
c906108c | 1374 | |
2df3850c | 1375 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
c906108c SS |
1376 | monitor_printf (current_monitor->setreg.cmd, val, name); |
1377 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1378 | monitor_printf (current_monitor->setreg.cmd, name); | |
1379 | else | |
1380 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1381 | ||
1456ad8e AC |
1382 | if (current_monitor->setreg.resp_delim) |
1383 | { | |
1384 | monitor_debug ("EXP setreg.resp_delim\n"); | |
1385 | monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0); | |
1386 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
5af949e3 | 1387 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
1456ad8e | 1388 | } |
c906108c | 1389 | if (current_monitor->setreg.term) |
c5aa993b | 1390 | { |
2df3850c JM |
1391 | monitor_debug ("EXP setreg.term\n"); |
1392 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
c906108c | 1393 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
5af949e3 | 1394 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
c906108c SS |
1395 | monitor_expect_prompt (NULL, 0); |
1396 | } | |
1397 | else | |
1398 | monitor_expect_prompt (NULL, 0); | |
025bb325 | 1399 | if (current_monitor->setreg.term_cmd) /* Mode exit required. */ |
c5aa993b | 1400 | { |
2df3850c | 1401 | monitor_debug ("EXP setreg_termcmd\n"); |
c5aa993b JM |
1402 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
1403 | monitor_expect_prompt (NULL, 0); | |
c906108c | 1404 | } |
c5aa993b | 1405 | } /* monitor_store_register */ |
c906108c SS |
1406 | |
1407 | /* Store the remote registers. */ | |
1408 | ||
1409 | static void | |
28439f5e PA |
1410 | monitor_store_registers (struct target_ops *ops, |
1411 | struct regcache *regcache, int regno) | |
c906108c SS |
1412 | { |
1413 | if (regno >= 0) | |
1414 | { | |
56be3814 | 1415 | monitor_store_register (regcache, regno); |
c906108c SS |
1416 | return; |
1417 | } | |
1418 | ||
9b072297 UW |
1419 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
1420 | regno++) | |
56be3814 | 1421 | monitor_store_register (regcache, regno); |
c906108c SS |
1422 | } |
1423 | ||
1424 | /* Get ready to modify the registers array. On machines which store | |
1425 | individual registers, this doesn't need to do anything. On machines | |
1426 | which store all the registers in one fell swoop, this makes sure | |
1427 | that registers contains all the registers from the program being | |
1428 | debugged. */ | |
1429 | ||
1430 | static void | |
f32dbf8c | 1431 | monitor_prepare_to_store (struct target_ops *self, struct regcache *regcache) |
c906108c | 1432 | { |
025bb325 | 1433 | /* Do nothing, since we can store individual regs. */ |
c906108c SS |
1434 | } |
1435 | ||
1436 | static void | |
fba45db2 | 1437 | monitor_files_info (struct target_ops *ops) |
c906108c | 1438 | { |
a3f17187 | 1439 | printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate); |
c906108c SS |
1440 | } |
1441 | ||
1442 | static int | |
915215be | 1443 | monitor_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1444 | { |
f5656ead | 1445 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
c5aa993b | 1446 | unsigned int val, hostval; |
c906108c SS |
1447 | char *cmd; |
1448 | int i; | |
1449 | ||
f5656ead | 1450 | monitor_debug ("MON write %d %s\n", len, paddress (target_gdbarch (), memaddr)); |
c906108c | 1451 | |
2df3850c | 1452 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
f5656ead | 1453 | memaddr = gdbarch_addr_bits_remove (target_gdbarch (), memaddr); |
c906108c SS |
1454 | |
1455 | /* Use memory fill command for leading 0 bytes. */ | |
1456 | ||
1457 | if (current_monitor->fill) | |
1458 | { | |
1459 | for (i = 0; i < len; i++) | |
1460 | if (myaddr[i] != 0) | |
1461 | break; | |
1462 | ||
025bb325 | 1463 | if (i > 4) /* More than 4 zeros is worth doing. */ |
c906108c | 1464 | { |
2df3850c JM |
1465 | monitor_debug ("MON FILL %d\n", i); |
1466 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
3e43a32a MS |
1467 | monitor_printf (current_monitor->fill, memaddr, |
1468 | (memaddr + i) - 1, 0); | |
c5aa993b JM |
1469 | else |
1470 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
c906108c SS |
1471 | |
1472 | monitor_expect_prompt (NULL, 0); | |
1473 | ||
1474 | return i; | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | #if 0 | |
1479 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1480 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1481 | { | |
1482 | len = 8; | |
1483 | cmd = current_monitor->setmem.cmdll; | |
1484 | } | |
1485 | else | |
1486 | #endif | |
1487 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1488 | { | |
1489 | len = 4; | |
1490 | cmd = current_monitor->setmem.cmdl; | |
1491 | } | |
1492 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1493 | { | |
1494 | len = 2; | |
1495 | cmd = current_monitor->setmem.cmdw; | |
1496 | } | |
1497 | else | |
1498 | { | |
1499 | len = 1; | |
1500 | cmd = current_monitor->setmem.cmdb; | |
1501 | } | |
1502 | ||
e17a4113 | 1503 | val = extract_unsigned_integer (myaddr, len, byte_order); |
c5aa993b | 1504 | |
c906108c | 1505 | if (len == 4) |
c5aa993b JM |
1506 | { |
1507 | hostval = *(unsigned int *) myaddr; | |
2df3850c | 1508 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
c906108c SS |
1509 | } |
1510 | ||
1511 | ||
1512 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1513 | monitor_printf_noecho (cmd, memaddr, val); | |
1514 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1515 | { | |
c906108c SS |
1516 | monitor_printf_noecho (cmd, memaddr); |
1517 | ||
1456ad8e AC |
1518 | if (current_monitor->setmem.resp_delim) |
1519 | { | |
1520 | monitor_debug ("EXP setmem.resp_delim"); | |
1521 | monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0); | |
1522 | monitor_printf ("%x\r", val); | |
1523 | } | |
c906108c | 1524 | if (current_monitor->setmem.term) |
c5aa993b | 1525 | { |
2df3850c | 1526 | monitor_debug ("EXP setmem.term"); |
c906108c SS |
1527 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
1528 | monitor_printf ("%x\r", val); | |
1529 | } | |
1530 | if (current_monitor->setmem.term_cmd) | |
025bb325 | 1531 | { /* Emit this to get out of the memory editing state. */ |
c5aa993b | 1532 | monitor_printf ("%s", current_monitor->setmem.term_cmd); |
025bb325 | 1533 | /* Drop through to expecting a prompt. */ |
c906108c SS |
1534 | } |
1535 | } | |
1536 | else | |
1537 | monitor_printf (cmd, memaddr, val); | |
1538 | ||
1539 | monitor_expect_prompt (NULL, 0); | |
1540 | ||
1541 | return len; | |
1542 | } | |
1543 | ||
1544 | ||
c5aa993b | 1545 | static int |
915215be | 1546 | monitor_write_memory_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1547 | { |
c5aa993b JM |
1548 | unsigned char val; |
1549 | int written = 0; | |
b8d56208 | 1550 | |
c5aa993b JM |
1551 | if (len == 0) |
1552 | return 0; | |
025bb325 | 1553 | /* Enter the sub mode. */ |
c5aa993b JM |
1554 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
1555 | monitor_expect_prompt (NULL, 0); | |
c906108c SS |
1556 | while (len) |
1557 | { | |
c5aa993b JM |
1558 | val = *myaddr; |
1559 | monitor_printf ("%x\r", val); | |
1560 | myaddr++; | |
1561 | memaddr++; | |
1562 | written++; | |
025bb325 | 1563 | /* If we wanted to, here we could validate the address. */ |
c5aa993b JM |
1564 | monitor_expect_prompt (NULL, 0); |
1565 | len--; | |
c906108c | 1566 | } |
025bb325 | 1567 | /* Now exit the sub mode. */ |
c906108c | 1568 | monitor_printf (current_monitor->getreg.term_cmd); |
c5aa993b JM |
1569 | monitor_expect_prompt (NULL, 0); |
1570 | return written; | |
c906108c SS |
1571 | } |
1572 | ||
1573 | ||
1574 | static void | |
c5aa993b | 1575 | longlongendswap (unsigned char *a) |
c906108c | 1576 | { |
c5aa993b JM |
1577 | int i, j; |
1578 | unsigned char x; | |
b8d56208 | 1579 | |
c5aa993b JM |
1580 | i = 0; |
1581 | j = 7; | |
c906108c | 1582 | while (i < 4) |
c5aa993b JM |
1583 | { |
1584 | x = *(a + i); | |
1585 | *(a + i) = *(a + j); | |
1586 | *(a + j) = x; | |
1587 | i++, j--; | |
c906108c SS |
1588 | } |
1589 | } | |
025bb325 | 1590 | /* Format 32 chars of long long value, advance the pointer. */ |
c5aa993b JM |
1591 | static char *hexlate = "0123456789abcdef"; |
1592 | static char * | |
1593 | longlong_hexchars (unsigned long long value, | |
1594 | char *outbuff) | |
c906108c | 1595 | { |
c5aa993b JM |
1596 | if (value == 0) |
1597 | { | |
1598 | *outbuff++ = '0'; | |
1599 | return outbuff; | |
1600 | } | |
c906108c | 1601 | else |
c5aa993b JM |
1602 | { |
1603 | static unsigned char disbuf[8]; /* disassembly buffer */ | |
1604 | unsigned char *scan, *limit; /* loop controls */ | |
1605 | unsigned char c, nib; | |
1606 | int leadzero = 1; | |
b8d56208 | 1607 | |
c5aa993b JM |
1608 | scan = disbuf; |
1609 | limit = scan + 8; | |
1610 | { | |
1611 | unsigned long long *dp; | |
b8d56208 | 1612 | |
c5aa993b JM |
1613 | dp = (unsigned long long *) scan; |
1614 | *dp = value; | |
c906108c | 1615 | } |
025bb325 | 1616 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts. */ |
c906108c | 1617 | while (scan < limit) |
7a292a7a | 1618 | { |
025bb325 | 1619 | c = *scan++; /* A byte of our long long value. */ |
c906108c | 1620 | if (leadzero) |
7a292a7a SS |
1621 | { |
1622 | if (c == 0) | |
1623 | continue; | |
1624 | else | |
025bb325 | 1625 | leadzero = 0; /* Henceforth we print even zeroes. */ |
7a292a7a | 1626 | } |
c5aa993b | 1627 | nib = c >> 4; /* high nibble bits */ |
7a292a7a | 1628 | *outbuff++ = hexlate[nib]; |
c5aa993b | 1629 | nib = c & 0x0f; /* low nibble bits */ |
7a292a7a | 1630 | *outbuff++ = hexlate[nib]; |
c906108c | 1631 | } |
c5aa993b | 1632 | return outbuff; |
c906108c | 1633 | } |
c5aa993b | 1634 | } /* longlong_hexchars */ |
c906108c SS |
1635 | |
1636 | ||
1637 | ||
1638 | /* I am only going to call this when writing virtual byte streams. | |
025bb325 MS |
1639 | Which possably entails endian conversions. */ |
1640 | ||
c5aa993b | 1641 | static int |
915215be | 1642 | monitor_write_memory_longlongs (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1643 | { |
025bb325 | 1644 | static char hexstage[20]; /* At least 16 digits required, plus null. */ |
c5aa993b JM |
1645 | char *endstring; |
1646 | long long *llptr; | |
1647 | long long value; | |
1648 | int written = 0; | |
b8d56208 | 1649 | |
12ff8552 | 1650 | llptr = (long long *) myaddr; |
c5aa993b JM |
1651 | if (len == 0) |
1652 | return 0; | |
1653 | monitor_printf (current_monitor->setmem.cmdll, memaddr); | |
1654 | monitor_expect_prompt (NULL, 0); | |
1655 | while (len >= 8) | |
1656 | { | |
1657 | value = *llptr; | |
1658 | endstring = longlong_hexchars (*llptr, hexstage); | |
025bb325 | 1659 | *endstring = '\0'; /* NUll terminate for printf. */ |
c5aa993b JM |
1660 | monitor_printf ("%s\r", hexstage); |
1661 | llptr++; | |
1662 | memaddr += 8; | |
1663 | written += 8; | |
025bb325 | 1664 | /* If we wanted to, here we could validate the address. */ |
c5aa993b JM |
1665 | monitor_expect_prompt (NULL, 0); |
1666 | len -= 8; | |
c906108c | 1667 | } |
025bb325 | 1668 | /* Now exit the sub mode. */ |
c906108c | 1669 | monitor_printf (current_monitor->getreg.term_cmd); |
c5aa993b JM |
1670 | monitor_expect_prompt (NULL, 0); |
1671 | return written; | |
1672 | } /* */ | |
c906108c SS |
1673 | |
1674 | ||
1675 | ||
1676 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1677 | /* This is for the large blocks of memory which may occur in downloading. | |
1678 | And for monitors which use interactive entry, | |
1679 | And for monitors which do not have other downloading methods. | |
1680 | Without this, we will end up calling monitor_write_memory many times | |
1681 | and do the entry and exit of the sub mode many times | |
1682 | This currently assumes... | |
c5aa993b JM |
1683 | MO_SETMEM_INTERACTIVE |
1684 | ! MO_NO_ECHO_ON_SETMEM | |
1685 | To use this, the you have to patch the monitor_cmds block with | |
025bb325 MS |
1686 | this function. Otherwise, its not tuned up for use by all |
1687 | monitor variations. */ | |
c906108c | 1688 | |
c5aa993b | 1689 | static int |
915215be | 1690 | monitor_write_memory_block (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
c906108c | 1691 | { |
c5aa993b | 1692 | int written; |
b8d56208 | 1693 | |
c5aa993b | 1694 | written = 0; |
025bb325 | 1695 | /* FIXME: This would be a good place to put the zero test. */ |
c5aa993b | 1696 | #if 1 |
c906108c | 1697 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
c5aa993b JM |
1698 | { |
1699 | return monitor_write_memory_longlongs (memaddr, myaddr, len); | |
1700 | } | |
c906108c | 1701 | #endif |
c5aa993b JM |
1702 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
1703 | return written; | |
c906108c SS |
1704 | } |
1705 | ||
1706 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1707 | which can only read a single byte/word/etc. at a time. */ | |
1708 | ||
1709 | static int | |
12ff8552 | 1710 | monitor_read_memory_single (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 1711 | { |
f5656ead | 1712 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
c906108c | 1713 | unsigned int val; |
c5aa993b | 1714 | char membuf[sizeof (int) * 2 + 1]; |
c906108c SS |
1715 | char *p; |
1716 | char *cmd; | |
c906108c | 1717 | |
2df3850c | 1718 | monitor_debug ("MON read single\n"); |
c906108c SS |
1719 | #if 0 |
1720 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1721 | call to strtoul below will fail if it tries to convert a value | |
1722 | that's too big to fit in a long. */ | |
1723 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1724 | { | |
1725 | len = 8; | |
1726 | cmd = current_monitor->getmem.cmdll; | |
1727 | } | |
1728 | else | |
1729 | #endif | |
1730 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1731 | { | |
1732 | len = 4; | |
1733 | cmd = current_monitor->getmem.cmdl; | |
1734 | } | |
1735 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1736 | { | |
1737 | len = 2; | |
1738 | cmd = current_monitor->getmem.cmdw; | |
1739 | } | |
1740 | else | |
1741 | { | |
1742 | len = 1; | |
1743 | cmd = current_monitor->getmem.cmdb; | |
1744 | } | |
1745 | ||
1746 | /* Send the examine command. */ | |
1747 | ||
1748 | monitor_printf (cmd, memaddr); | |
1749 | ||
1750 | /* If RESP_DELIM is specified, we search for that as a leading | |
1751 | delimiter for the memory value. Otherwise, we just start | |
1752 | searching from the start of the buf. */ | |
1753 | ||
1754 | if (current_monitor->getmem.resp_delim) | |
c5aa993b | 1755 | { |
2df3850c | 1756 | monitor_debug ("EXP getmem.resp_delim\n"); |
c906108c SS |
1757 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
1758 | } | |
1759 | ||
1760 | /* Now, read the appropriate number of hex digits for this loc, | |
1761 | skipping spaces. */ | |
1762 | ||
025bb325 | 1763 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ |
c5aa993b | 1764 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1765 | { |
1766 | int c; | |
1767 | ||
1768 | c = readchar (timeout); | |
1769 | while (c == ' ') | |
1770 | c = readchar (timeout); | |
1771 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1772 | ; | |
1773 | else | |
2df3850c JM |
1774 | monitor_error ("monitor_read_memory_single", |
1775 | "bad response from monitor", | |
93d56215 | 1776 | memaddr, 0, NULL, 0); |
c906108c | 1777 | } |
c906108c | 1778 | |
93d56215 AC |
1779 | { |
1780 | int i; | |
b8d56208 | 1781 | |
93d56215 AC |
1782 | for (i = 0; i < len * 2; i++) |
1783 | { | |
1784 | int c; | |
c906108c | 1785 | |
93d56215 AC |
1786 | while (1) |
1787 | { | |
1788 | c = readchar (timeout); | |
1789 | if (isxdigit (c)) | |
1790 | break; | |
1791 | if (c == ' ') | |
1792 | continue; | |
1793 | ||
1794 | monitor_error ("monitor_read_memory_single", | |
1795 | "bad response from monitor", | |
1796 | memaddr, i, membuf, 0); | |
1797 | } | |
c906108c SS |
1798 | membuf[i] = c; |
1799 | } | |
025bb325 | 1800 | membuf[i] = '\000'; /* Terminate the number. */ |
93d56215 | 1801 | } |
c906108c SS |
1802 | |
1803 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1804 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1805 | all of the output into buf, and then wait for the normal prompt. */ | |
1806 | ||
1807 | if (current_monitor->getmem.term) | |
1808 | { | |
025bb325 MS |
1809 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* Get |
1810 | response. */ | |
c906108c SS |
1811 | |
1812 | if (current_monitor->getmem.term_cmd) | |
1813 | { | |
1814 | monitor_printf (current_monitor->getmem.term_cmd); | |
1815 | monitor_expect_prompt (NULL, 0); | |
1816 | } | |
1817 | } | |
1818 | else | |
025bb325 | 1819 | monitor_expect_prompt (NULL, 0); /* Get response. */ |
c906108c SS |
1820 | |
1821 | p = membuf; | |
1822 | val = strtoul (membuf, &p, 16); | |
1823 | ||
1824 | if (val == 0 && membuf == p) | |
2df3850c JM |
1825 | monitor_error ("monitor_read_memory_single", |
1826 | "bad value from monitor", | |
c906108c SS |
1827 | memaddr, 0, membuf, 0); |
1828 | ||
025bb325 | 1829 | /* supply register stores in target byte order, so swap here. */ |
c906108c | 1830 | |
e17a4113 | 1831 | store_unsigned_integer (myaddr, len, byte_order, val); |
c906108c SS |
1832 | |
1833 | return len; | |
1834 | } | |
1835 | ||
1836 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1837 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1838 | than 16 bytes at a time. */ | |
1839 | ||
1840 | static int | |
12ff8552 | 1841 | monitor_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c SS |
1842 | { |
1843 | unsigned int val; | |
1844 | char buf[512]; | |
1845 | char *p, *p1; | |
1846 | int resp_len; | |
1847 | int i; | |
1848 | CORE_ADDR dumpaddr; | |
1849 | ||
1850 | if (len <= 0) | |
1851 | { | |
2df3850c | 1852 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
c906108c SS |
1853 | return 0; |
1854 | } | |
1855 | ||
3329c4b5 | 1856 | monitor_debug ("MON read block ta(%s) ha(%s) %d\n", |
f5656ead | 1857 | paddress (target_gdbarch (), memaddr), |
3329c4b5 | 1858 | host_address_to_string (myaddr), len); |
c906108c SS |
1859 | |
1860 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
f5656ead | 1861 | memaddr = gdbarch_addr_bits_remove (target_gdbarch (), memaddr); |
c906108c SS |
1862 | |
1863 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1864 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1865 | ||
1866 | len = min (len, 16); | |
1867 | ||
177b42fe | 1868 | /* Some dumpers align the first data with the preceding 16 |
025bb325 MS |
1869 | byte boundary. Some print blanks and start at the |
1870 | requested boundary. EXACT_DUMPADDR */ | |
c906108c SS |
1871 | |
1872 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
c5aa993b | 1873 | ? memaddr : memaddr & ~0x0f; |
c906108c SS |
1874 | |
1875 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1876 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1877 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1878 | ||
025bb325 | 1879 | /* Send the memory examine command. */ |
c906108c SS |
1880 | |
1881 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1882 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1883 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1884 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1885 | else | |
1886 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1887 | ||
1888 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1889 | is present), we will send TERM_CMD if that is present. In any | |
1890 | case, we collect all of the output into buf, and then wait for | |
1891 | the normal prompt. */ | |
1892 | ||
1893 | if (current_monitor->getmem.term) | |
1894 | { | |
3e43a32a | 1895 | resp_len = monitor_expect (current_monitor->getmem.term, |
025bb325 | 1896 | buf, sizeof buf); /* Get response. */ |
c906108c SS |
1897 | |
1898 | if (resp_len <= 0) | |
2df3850c JM |
1899 | monitor_error ("monitor_read_memory", |
1900 | "excessive response from monitor", | |
c906108c SS |
1901 | memaddr, resp_len, buf, 0); |
1902 | ||
1903 | if (current_monitor->getmem.term_cmd) | |
1904 | { | |
2cd58942 | 1905 | serial_write (monitor_desc, current_monitor->getmem.term_cmd, |
c906108c SS |
1906 | strlen (current_monitor->getmem.term_cmd)); |
1907 | monitor_expect_prompt (NULL, 0); | |
1908 | } | |
1909 | } | |
1910 | else | |
025bb325 | 1911 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* Get response. */ |
c906108c SS |
1912 | |
1913 | p = buf; | |
1914 | ||
1915 | /* If RESP_DELIM is specified, we search for that as a leading | |
1916 | delimiter for the values. Otherwise, we just start searching | |
1917 | from the start of the buf. */ | |
1918 | ||
1919 | if (current_monitor->getmem.resp_delim) | |
1920 | { | |
1921 | int retval, tmp; | |
1922 | struct re_registers resp_strings; | |
b8d56208 | 1923 | |
3e43a32a MS |
1924 | monitor_debug ("MON getmem.resp_delim %s\n", |
1925 | current_monitor->getmem.resp_delim); | |
c906108c SS |
1926 | |
1927 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1928 | tmp = strlen (p); | |
1929 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1930 | &resp_strings); | |
1931 | ||
1932 | if (retval < 0) | |
2df3850c JM |
1933 | monitor_error ("monitor_read_memory", |
1934 | "bad response from monitor", | |
c906108c SS |
1935 | memaddr, resp_len, buf, 0); |
1936 | ||
1937 | p += resp_strings.end[0]; | |
1938 | #if 0 | |
1939 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1940 | if (!p) | |
2df3850c JM |
1941 | monitor_error ("monitor_read_memory", |
1942 | "bad response from monitor", | |
c906108c SS |
1943 | memaddr, resp_len, buf, 0); |
1944 | p += strlen (current_monitor->getmem.resp_delim); | |
1945 | #endif | |
1946 | } | |
3329c4b5 PM |
1947 | monitor_debug ("MON scanning %d ,%s '%s'\n", len, |
1948 | host_address_to_string (p), p); | |
c906108c SS |
1949 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1950 | { | |
c5aa993b JM |
1951 | char c; |
1952 | int fetched = 0; | |
c906108c | 1953 | i = len; |
c5aa993b | 1954 | c = *p; |
c906108c | 1955 | |
c5aa993b JM |
1956 | |
1957 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1958 | { | |
1959 | if (isxdigit (c)) | |
1960 | { | |
1961 | if ((dumpaddr >= memaddr) && (i > 0)) | |
1962 | { | |
1963 | val = fromhex (c) * 16 + fromhex (*(p + 1)); | |
c906108c | 1964 | *myaddr++ = val; |
2df3850c JM |
1965 | if (monitor_debug_p || remote_debug) |
1966 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); | |
c906108c | 1967 | --i; |
c5aa993b | 1968 | fetched++; |
c906108c SS |
1969 | } |
1970 | ++dumpaddr; | |
1971 | ++p; | |
1972 | } | |
025bb325 | 1973 | ++p; /* Skip a blank or other non hex char. */ |
c5aa993b | 1974 | c = *p; |
c906108c | 1975 | } |
c5aa993b | 1976 | if (fetched == 0) |
8a3fe4f8 | 1977 | error (_("Failed to read via monitor")); |
2df3850c JM |
1978 | if (monitor_debug_p || remote_debug) |
1979 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
025bb325 MS |
1980 | return fetched; /* Return the number of bytes actually |
1981 | read. */ | |
c906108c | 1982 | } |
2df3850c | 1983 | monitor_debug ("MON scanning bytes\n"); |
c906108c SS |
1984 | |
1985 | for (i = len; i > 0; i--) | |
1986 | { | |
025bb325 | 1987 | /* Skip non-hex chars, but bomb on end of string and newlines. */ |
c906108c SS |
1988 | |
1989 | while (1) | |
1990 | { | |
1991 | if (isxdigit (*p)) | |
1992 | break; | |
1993 | ||
1994 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
2df3850c JM |
1995 | monitor_error ("monitor_read_memory", |
1996 | "badly terminated response from monitor", | |
c906108c SS |
1997 | memaddr, resp_len, buf, 0); |
1998 | p++; | |
1999 | } | |
2000 | ||
2001 | val = strtoul (p, &p1, 16); | |
2002 | ||
2003 | if (val == 0 && p == p1) | |
2df3850c JM |
2004 | monitor_error ("monitor_read_memory", |
2005 | "bad value from monitor", | |
c906108c SS |
2006 | memaddr, resp_len, buf, 0); |
2007 | ||
2008 | *myaddr++ = val; | |
2009 | ||
2010 | if (i == 1) | |
2011 | break; | |
2012 | ||
2013 | p = p1; | |
2014 | } | |
2015 | ||
2016 | return len; | |
2017 | } | |
2018 | ||
915215be PA |
2019 | /* Helper for monitor_xfer_partial that handles memory transfers. |
2020 | Arguments are like target_xfer_partial. */ | |
0e7e8d51 | 2021 | |
9b409511 | 2022 | static enum target_xfer_status |
915215be | 2023 | monitor_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 | 2024 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) |
c906108c | 2025 | { |
4930751a C |
2026 | int res; |
2027 | ||
915215be | 2028 | if (writebuf != NULL) |
4930751a C |
2029 | { |
2030 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
915215be | 2031 | res = monitor_write_memory_block (memaddr, writebuf, len); |
4930751a | 2032 | else |
915215be | 2033 | res = monitor_write_memory (memaddr, writebuf, len); |
4930751a C |
2034 | } |
2035 | else | |
2036 | { | |
915215be | 2037 | res = monitor_read_memory (memaddr, readbuf, len); |
4930751a C |
2038 | } |
2039 | ||
9b409511 | 2040 | if (res <= 0) |
915215be | 2041 | return TARGET_XFER_E_IO; |
9b409511 YQ |
2042 | else |
2043 | { | |
2044 | *xfered_len = (ULONGEST) res; | |
2045 | return TARGET_XFER_OK; | |
2046 | } | |
c906108c SS |
2047 | } |
2048 | ||
915215be PA |
2049 | /* Target to_xfer_partial implementation. */ |
2050 | ||
9b409511 | 2051 | static enum target_xfer_status |
915215be PA |
2052 | monitor_xfer_partial (struct target_ops *ops, enum target_object object, |
2053 | const char *annex, gdb_byte *readbuf, | |
9b409511 YQ |
2054 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, |
2055 | ULONGEST *xfered_len) | |
915215be PA |
2056 | { |
2057 | switch (object) | |
2058 | { | |
2059 | case TARGET_OBJECT_MEMORY: | |
9b409511 | 2060 | return monitor_xfer_memory (readbuf, writebuf, offset, len, xfered_len); |
915215be PA |
2061 | |
2062 | default: | |
2063 | return TARGET_XFER_E_IO; | |
2064 | } | |
2065 | } | |
2066 | ||
c906108c | 2067 | static void |
7d85a9c0 | 2068 | monitor_kill (struct target_ops *ops) |
c906108c | 2069 | { |
025bb325 | 2070 | return; /* Ignore attempts to kill target system. */ |
c906108c SS |
2071 | } |
2072 | ||
281b533b | 2073 | /* All we actually do is set the PC to the start address of exec_bfd. */ |
c906108c SS |
2074 | |
2075 | static void | |
136d6dae VP |
2076 | monitor_create_inferior (struct target_ops *ops, char *exec_file, |
2077 | char *args, char **env, int from_tty) | |
c906108c SS |
2078 | { |
2079 | if (args && (*args != '\000')) | |
8a3fe4f8 | 2080 | error (_("Args are not supported by the monitor.")); |
c906108c SS |
2081 | |
2082 | first_time = 1; | |
2083 | clear_proceed_status (); | |
fb14de7b UW |
2084 | regcache_write_pc (get_current_regcache (), |
2085 | bfd_get_start_address (exec_bfd)); | |
c906108c SS |
2086 | } |
2087 | ||
2088 | /* Clean up when a program exits. | |
2089 | The program actually lives on in the remote processor's RAM, and may be | |
2090 | run again without a download. Don't leave it full of breakpoint | |
2091 | instructions. */ | |
2092 | ||
2093 | static void | |
136d6dae | 2094 | monitor_mourn_inferior (struct target_ops *ops) |
c906108c SS |
2095 | { |
2096 | unpush_target (targ_ops); | |
025bb325 | 2097 | generic_mourn_inferior (); /* Do all the proper things now. */ |
5e0b29c1 | 2098 | delete_thread_silent (monitor_ptid); |
c906108c SS |
2099 | } |
2100 | ||
c906108c SS |
2101 | /* Tell the monitor to add a breakpoint. */ |
2102 | ||
2103 | static int | |
3db08215 | 2104 | monitor_insert_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 2105 | struct bp_target_info *bp_tgt) |
c906108c | 2106 | { |
8181d85f | 2107 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c | 2108 | int i; |
c906108c SS |
2109 | int bplen; |
2110 | ||
5af949e3 | 2111 | monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2112 | if (current_monitor->set_break == NULL) |
8a3fe4f8 | 2113 | error (_("No set_break defined for this monitor")); |
c906108c SS |
2114 | |
2115 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
a6d9a66e | 2116 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
c906108c SS |
2117 | |
2118 | /* Determine appropriate breakpoint size for this address. */ | |
a6d9a66e | 2119 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); |
8181d85f DJ |
2120 | bp_tgt->placed_address = addr; |
2121 | bp_tgt->placed_size = bplen; | |
c906108c | 2122 | |
9e086581 | 2123 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2124 | { |
2125 | if (breakaddr[i] == 0) | |
2126 | { | |
2127 | breakaddr[i] = addr; | |
c906108c SS |
2128 | monitor_printf (current_monitor->set_break, addr); |
2129 | monitor_expect_prompt (NULL, 0); | |
2130 | return 0; | |
2131 | } | |
2132 | } | |
2133 | ||
3e43a32a MS |
2134 | error (_("Too many breakpoints (> %d) for monitor."), |
2135 | current_monitor->num_breakpoints); | |
c906108c SS |
2136 | } |
2137 | ||
2138 | /* Tell the monitor to remove a breakpoint. */ | |
2139 | ||
2140 | static int | |
3db08215 | 2141 | monitor_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, |
a6d9a66e | 2142 | struct bp_target_info *bp_tgt) |
c906108c | 2143 | { |
8181d85f | 2144 | CORE_ADDR addr = bp_tgt->placed_address; |
c906108c SS |
2145 | int i; |
2146 | ||
5af949e3 | 2147 | monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch, addr)); |
2df3850c | 2148 | if (current_monitor->clr_break == NULL) |
8a3fe4f8 | 2149 | error (_("No clr_break defined for this monitor")); |
c906108c | 2150 | |
9e086581 | 2151 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2152 | { |
2153 | if (breakaddr[i] == addr) | |
2154 | { | |
2155 | breakaddr[i] = 0; | |
025bb325 | 2156 | /* Some monitors remove breakpoints based on the address. */ |
c906108c SS |
2157 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) |
2158 | monitor_printf (current_monitor->clr_break, addr); | |
2159 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2160 | monitor_printf (current_monitor->clr_break, i + 1); | |
2161 | else | |
2162 | monitor_printf (current_monitor->clr_break, i); | |
2163 | monitor_expect_prompt (NULL, 0); | |
2164 | return 0; | |
2165 | } | |
2166 | } | |
2167 | fprintf_unfiltered (gdb_stderr, | |
5af949e3 UW |
2168 | "Can't find breakpoint associated with %s\n", |
2169 | paddress (gdbarch, addr)); | |
c906108c SS |
2170 | return 1; |
2171 | } | |
2172 | ||
2173 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2174 | an S-record. Return non-zero if the ACK is received properly. */ | |
2175 | ||
2176 | static int | |
fba45db2 | 2177 | monitor_wait_srec_ack (void) |
c906108c | 2178 | { |
d4f3574e | 2179 | int ch; |
c906108c SS |
2180 | |
2181 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2182 | { | |
2183 | return (readchar (timeout) == '+'); | |
2184 | } | |
2185 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2186 | { | |
2187 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2188 | if ((ch = readchar (1)) < 0) | |
2189 | return 0; | |
2190 | if ((ch = readchar (1)) < 0) | |
2191 | return 0; | |
2192 | if ((ch = readchar (1)) < 0) | |
2193 | return 0; | |
2194 | if ((ch = readchar (1)) < 0) | |
2195 | return 0; | |
2196 | } | |
2197 | return 1; | |
2198 | } | |
2199 | ||
025bb325 | 2200 | /* monitor_load -- download a file. */ |
c906108c SS |
2201 | |
2202 | static void | |
71a9f134 | 2203 | monitor_load (struct target_ops *self, char *args, int from_tty) |
c906108c | 2204 | { |
61a672f1 PA |
2205 | CORE_ADDR load_offset = 0; |
2206 | char **argv; | |
2207 | struct cleanup *old_cleanups; | |
2208 | char *filename; | |
c906108c | 2209 | |
61a672f1 | 2210 | monitor_debug ("MON load\n"); |
40e397df | 2211 | |
61a672f1 PA |
2212 | if (args == NULL) |
2213 | error_no_arg (_("file to load")); | |
40e397df | 2214 | |
61a672f1 PA |
2215 | argv = gdb_buildargv (args); |
2216 | old_cleanups = make_cleanup_freeargv (argv); | |
40e397df | 2217 | |
61a672f1 PA |
2218 | filename = tilde_expand (argv[0]); |
2219 | make_cleanup (xfree, filename); | |
c906108c | 2220 | |
61a672f1 PA |
2221 | /* Enable user to specify address for downloading as 2nd arg to load. */ |
2222 | if (argv[1] != NULL) | |
2223 | { | |
2224 | const char *endptr; | |
40e397df | 2225 | |
61a672f1 | 2226 | load_offset = strtoulst (argv[1], &endptr, 0); |
40e397df | 2227 | |
61a672f1 PA |
2228 | /* If the last word was not a valid number then |
2229 | treat it as a file name with spaces in. */ | |
2230 | if (argv[1] == endptr) | |
2231 | error (_("Invalid download offset:%s."), argv[1]); | |
40e397df | 2232 | |
61a672f1 PA |
2233 | if (argv[2] != NULL) |
2234 | error (_("Too many parameters.")); | |
2235 | } | |
c906108c | 2236 | |
61a672f1 PA |
2237 | monitor_printf (current_monitor->load); |
2238 | if (current_monitor->loadresp) | |
2239 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
c906108c | 2240 | |
61a672f1 PA |
2241 | load_srec (monitor_desc, filename, load_offset, |
2242 | 32, SREC_ALL, hashmark, | |
2243 | current_monitor->flags & MO_SREC_ACK ? | |
2244 | monitor_wait_srec_ack : NULL); | |
c906108c | 2245 | |
61a672f1 | 2246 | monitor_expect_prompt (NULL, 0); |
40e397df | 2247 | |
61a672f1 | 2248 | do_cleanups (old_cleanups); |
c906108c | 2249 | |
025bb325 | 2250 | /* Finally, make the PC point at the start address. */ |
c906108c | 2251 | if (exec_bfd) |
fb14de7b UW |
2252 | regcache_write_pc (get_current_regcache (), |
2253 | bfd_get_start_address (exec_bfd)); | |
c906108c | 2254 | |
e8816aac JB |
2255 | /* There used to be code here which would clear inferior_ptid and |
2256 | call clear_symtab_users. None of that should be necessary: | |
2257 | monitor targets should behave like remote protocol targets, and | |
2258 | since generic_load does none of those things, this function | |
2259 | shouldn't either. | |
2260 | ||
2261 | Furthermore, clearing inferior_ptid is *incorrect*. After doing | |
2262 | a load, we still have a valid connection to the monitor, with a | |
2263 | live processor state to fiddle with. The user can type | |
2264 | `continue' or `jump *start' and make the program run. If they do | |
2265 | these things, however, GDB will be talking to a running program | |
2266 | while inferior_ptid is null_ptid; this makes things like | |
2267 | reinit_frame_cache very confused. */ | |
c906108c SS |
2268 | } |
2269 | ||
2270 | static void | |
1eab8a48 | 2271 | monitor_stop (struct target_ops *self, ptid_t ptid) |
c906108c | 2272 | { |
2df3850c | 2273 | monitor_debug ("MON stop\n"); |
c906108c | 2274 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
2cd58942 | 2275 | serial_send_break (monitor_desc); |
c906108c SS |
2276 | if (current_monitor->stop) |
2277 | monitor_printf_noecho (current_monitor->stop); | |
2278 | } | |
2279 | ||
96baa820 | 2280 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
025bb325 | 2281 | in OUTPUT until the prompt is seen. FIXME: We read the characters |
96baa820 | 2282 | ourseleves here cause of a nasty echo. */ |
c906108c SS |
2283 | |
2284 | static void | |
1aac633b | 2285 | monitor_rcmd (struct target_ops *self, char *command, |
d9fcf2fb | 2286 | struct ui_file *outbuf) |
c906108c SS |
2287 | { |
2288 | char *p; | |
2289 | int resp_len; | |
2290 | char buf[1000]; | |
2291 | ||
2292 | if (monitor_desc == NULL) | |
8a3fe4f8 | 2293 | error (_("monitor target not open.")); |
c906108c SS |
2294 | |
2295 | p = current_monitor->prompt; | |
2296 | ||
2297 | /* Send the command. Note that if no args were supplied, then we're | |
2298 | just sending the monitor a newline, which is sometimes useful. */ | |
2299 | ||
96baa820 | 2300 | monitor_printf ("%s\r", (command ? command : "")); |
c906108c SS |
2301 | |
2302 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2303 | ||
025bb325 | 2304 | fputs_unfiltered (buf, outbuf); /* Output the response. */ |
c906108c SS |
2305 | } |
2306 | ||
2307 | /* Convert hex digit A to a number. */ | |
2308 | ||
2309 | #if 0 | |
2310 | static int | |
fba45db2 | 2311 | from_hex (int a) |
c5aa993b | 2312 | { |
c906108c SS |
2313 | if (a >= '0' && a <= '9') |
2314 | return a - '0'; | |
2315 | if (a >= 'a' && a <= 'f') | |
2316 | return a - 'a' + 10; | |
2317 | if (a >= 'A' && a <= 'F') | |
2318 | return a - 'A' + 10; | |
2319 | ||
8a3fe4f8 | 2320 | error (_("Reply contains invalid hex digit 0x%x"), a); |
c906108c SS |
2321 | } |
2322 | #endif | |
2323 | ||
2324 | char * | |
fba45db2 | 2325 | monitor_get_dev_name (void) |
c906108c SS |
2326 | { |
2327 | return dev_name; | |
2328 | } | |
2329 | ||
5e0b29c1 PA |
2330 | /* Check to see if a thread is still alive. */ |
2331 | ||
2332 | static int | |
28439f5e | 2333 | monitor_thread_alive (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2334 | { |
2335 | if (ptid_equal (ptid, monitor_ptid)) | |
2336 | /* The monitor's task is always alive. */ | |
2337 | return 1; | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
2342 | /* Convert a thread ID to a string. Returns the string in a static | |
2343 | buffer. */ | |
2344 | ||
2345 | static char * | |
117de6a9 | 2346 | monitor_pid_to_str (struct target_ops *ops, ptid_t ptid) |
5e0b29c1 PA |
2347 | { |
2348 | static char buf[64]; | |
2349 | ||
2350 | if (ptid_equal (monitor_ptid, ptid)) | |
2351 | { | |
2352 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
2353 | return buf; | |
2354 | } | |
2355 | ||
2356 | return normal_pid_to_str (ptid); | |
2357 | } | |
2358 | ||
c906108c SS |
2359 | static struct target_ops monitor_ops; |
2360 | ||
2361 | static void | |
2362 | init_base_monitor_ops (void) | |
2363 | { | |
c906108c | 2364 | monitor_ops.to_close = monitor_close; |
c906108c | 2365 | monitor_ops.to_detach = monitor_detach; |
c906108c SS |
2366 | monitor_ops.to_resume = monitor_resume; |
2367 | monitor_ops.to_wait = monitor_wait; | |
c906108c SS |
2368 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
2369 | monitor_ops.to_store_registers = monitor_store_registers; | |
2370 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
915215be | 2371 | monitor_ops.to_xfer_partial = monitor_xfer_partial; |
c906108c SS |
2372 | monitor_ops.to_files_info = monitor_files_info; |
2373 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2374 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
c906108c SS |
2375 | monitor_ops.to_kill = monitor_kill; |
2376 | monitor_ops.to_load = monitor_load; | |
c906108c | 2377 | monitor_ops.to_create_inferior = monitor_create_inferior; |
c906108c | 2378 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
c906108c | 2379 | monitor_ops.to_stop = monitor_stop; |
96baa820 | 2380 | monitor_ops.to_rcmd = monitor_rcmd; |
49d03eab | 2381 | monitor_ops.to_log_command = serial_log_command; |
5e0b29c1 PA |
2382 | monitor_ops.to_thread_alive = monitor_thread_alive; |
2383 | monitor_ops.to_pid_to_str = monitor_pid_to_str; | |
c906108c | 2384 | monitor_ops.to_stratum = process_stratum; |
c35b1492 PA |
2385 | monitor_ops.to_has_all_memory = default_child_has_all_memory; |
2386 | monitor_ops.to_has_memory = default_child_has_memory; | |
2387 | monitor_ops.to_has_stack = default_child_has_stack; | |
2388 | monitor_ops.to_has_registers = default_child_has_registers; | |
2389 | monitor_ops.to_has_execution = default_child_has_execution; | |
c906108c | 2390 | monitor_ops.to_magic = OPS_MAGIC; |
c5aa993b | 2391 | } /* init_base_monitor_ops */ |
c906108c | 2392 | |
025bb325 | 2393 | /* Init the target_ops structure pointed at by OPS. */ |
c906108c SS |
2394 | |
2395 | void | |
fba45db2 | 2396 | init_monitor_ops (struct target_ops *ops) |
c906108c SS |
2397 | { |
2398 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2399 | init_base_monitor_ops (); | |
2400 | ||
2401 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2402 | } | |
2403 | ||
2404 | /* Define additional commands that are usually only used by monitors. */ | |
2405 | ||
3e43a32a MS |
2406 | /* -Wmissing-prototypes */ |
2407 | extern initialize_file_ftype _initialize_remote_monitors; | |
a78f21af | 2408 | |
c906108c | 2409 | void |
fba45db2 | 2410 | _initialize_remote_monitors (void) |
c906108c SS |
2411 | { |
2412 | init_base_monitor_ops (); | |
5bf193a2 AC |
2413 | add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\ |
2414 | Set display of activity while downloading a file."), _("\ | |
2415 | Show display of activity while downloading a file."), _("\ | |
2416 | When enabled, a hashmark \'#\' is displayed."), | |
2417 | NULL, | |
2418 | NULL, /* FIXME: i18n: */ | |
2419 | &setlist, &showlist); | |
2df3850c | 2420 | |
ccce17b0 | 2421 | add_setshow_zuinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\ |
85c07804 AC |
2422 | Set debugging of remote monitor communication."), _("\ |
2423 | Show debugging of remote monitor communication."), _("\ | |
2df3850c | 2424 | When enabled, communication between GDB and the remote monitor\n\ |
85c07804 | 2425 | is displayed."), |
ccce17b0 YQ |
2426 | NULL, |
2427 | NULL, /* FIXME: i18n: */ | |
2428 | &setdebuglist, &showdebuglist); | |
5e0b29c1 PA |
2429 | |
2430 | /* Yes, 42000 is arbitrary. The only sense out of it, is that it | |
2431 | isn't 0. */ | |
2432 | monitor_ptid = ptid_build (42000, 0, 42000); | |
c906108c | 2433 | } |