Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for boot monitors, for GDB. |
b6ba6518 KB |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 Free Software Foundation, Inc. | |
c906108c SS |
4 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
5 | Resurrected from the ashes by Stu Grossman. | |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | /* This file was derived from various remote-* modules. It is a collection | |
25 | of generic support functions so GDB can talk directly to a ROM based | |
26 | monitor. This saves use from having to hack an exception based handler | |
8e1a459b | 27 | into existence, and makes for quick porting. |
c906108c SS |
28 | |
29 | This module talks to a debug monitor called 'MONITOR', which | |
30 | We communicate with MONITOR via either a direct serial line, or a TCP | |
31 | (or possibly TELNET) stream to a terminal multiplexor, | |
32 | which in turn talks to the target board. */ | |
33 | ||
34 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
35 | most 32 bits long. If they can be larger, you will need to declare | |
36 | values as LONGEST and use %llx or some such to print values when | |
37 | building commands to send to the monitor. Since we don't know of | |
38 | any actual 64-bit targets with ROM monitors that use this code, | |
39 | it's not an issue right now. -sts 4/18/96 */ | |
40 | ||
41 | #include "defs.h" | |
42 | #include "gdbcore.h" | |
43 | #include "target.h" | |
c906108c SS |
44 | #include <signal.h> |
45 | #include <ctype.h> | |
46 | #include "gdb_string.h" | |
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" | |
88987551 | 53 | #include "gdb_regex.h" |
c906108c | 54 | #include "srec.h" |
4e052eda | 55 | #include "regcache.h" |
c906108c SS |
56 | |
57 | static char *dev_name; | |
58 | static struct target_ops *targ_ops; | |
59 | ||
a14ed312 | 60 | static void monitor_vsprintf (char *sndbuf, char *pattern, va_list args); |
c906108c | 61 | |
a14ed312 | 62 | static int readchar (int timeout); |
c906108c | 63 | |
a14ed312 KB |
64 | static void monitor_fetch_register (int regno); |
65 | static void monitor_store_register (int regno); | |
c906108c | 66 | |
2df3850c JM |
67 | static void monitor_printable_string (char *newstr, char *oldstr, int len); |
68 | static void monitor_error (char *function, char *message, CORE_ADDR memaddr, int len, char *string, int final_char); | |
a14ed312 | 69 | static void monitor_detach (char *args, int from_tty); |
39f77062 | 70 | static void monitor_resume (ptid_t ptid, int step, enum target_signal sig); |
a14ed312 KB |
71 | static void monitor_interrupt (int signo); |
72 | static void monitor_interrupt_twice (int signo); | |
73 | static void monitor_interrupt_query (void); | |
74 | static void monitor_wait_cleanup (void *old_timeout); | |
75 | ||
39f77062 | 76 | static ptid_t monitor_wait (ptid_t ptid, struct target_waitstatus *status); |
a14ed312 KB |
77 | static void monitor_fetch_registers (int regno); |
78 | static void monitor_store_registers (int regno); | |
79 | static void monitor_prepare_to_store (void); | |
80 | static int monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, | |
29e57380 C |
81 | int write, |
82 | struct mem_attrib *attrib, | |
83 | struct target_ops *target); | |
a14ed312 KB |
84 | static void monitor_files_info (struct target_ops *ops); |
85 | static int monitor_insert_breakpoint (CORE_ADDR addr, char *shadow); | |
86 | static int monitor_remove_breakpoint (CORE_ADDR addr, char *shadow); | |
87 | static void monitor_kill (void); | |
88 | static void monitor_load (char *file, int from_tty); | |
89 | static void monitor_mourn_inferior (void); | |
90 | static void monitor_stop (void); | |
91 | ||
92 | static int monitor_read_memory (CORE_ADDR addr, char *myaddr, int len); | |
93 | static int monitor_write_memory (CORE_ADDR addr, char *myaddr, int len); | |
94 | static int monitor_write_memory_bytes (CORE_ADDR addr, char *myaddr, int len); | |
95 | static int monitor_write_memory_block (CORE_ADDR memaddr, | |
96 | char *myaddr, int len); | |
97 | static int monitor_expect_regexp (struct re_pattern_buffer *pat, | |
98 | char *buf, int buflen); | |
99 | static void monitor_dump_regs (void); | |
c906108c | 100 | #if 0 |
a14ed312 KB |
101 | static int from_hex (int a); |
102 | static unsigned long get_hex_word (void); | |
c906108c | 103 | #endif |
a14ed312 | 104 | static void parse_register_dump (char *, int); |
c906108c SS |
105 | |
106 | static struct monitor_ops *current_monitor; | |
107 | ||
108 | static int hashmark; /* flag set by "set hash" */ | |
109 | ||
110 | static int timeout = 30; | |
111 | ||
112 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ | |
113 | ||
c5aa993b | 114 | static void (*ofunc) (); /* Old SIGINT signal handler */ |
c906108c | 115 | |
9e086581 JM |
116 | static CORE_ADDR *breakaddr; |
117 | ||
c906108c SS |
118 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
119 | that monitor_open knows that we don't have a file open when the | |
120 | program starts. */ | |
121 | ||
122 | static serial_t monitor_desc = NULL; | |
123 | ||
124 | /* Pointer to regexp pattern matching data */ | |
125 | ||
126 | static struct re_pattern_buffer register_pattern; | |
127 | static char register_fastmap[256]; | |
128 | ||
129 | static struct re_pattern_buffer getmem_resp_delim_pattern; | |
130 | static char getmem_resp_delim_fastmap[256]; | |
131 | ||
132 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when | |
133 | monitor_wait wakes up. */ | |
134 | ||
c5aa993b JM |
135 | static int first_time = 0; /* is this the first time we're executing after |
136 | gaving created the child proccess? */ | |
c906108c | 137 | |
d4f3574e SS |
138 | #define TARGET_BUF_SIZE 2048 |
139 | ||
2df3850c JM |
140 | /* Monitor specific debugging information. Typically only useful to |
141 | the developer of a new monitor interface. */ | |
c906108c | 142 | |
2df3850c JM |
143 | static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2); |
144 | ||
145 | static int monitor_debug_p = 0; | |
146 | ||
147 | /* NOTE: This file alternates between monitor_debug_p and remote_debug | |
148 | when determining if debug information is printed. Perhaphs this | |
149 | could be simplified. */ | |
150 | ||
151 | static void | |
152 | monitor_debug (const char *fmt, ...) | |
153 | { | |
154 | if (monitor_debug_p) | |
155 | { | |
156 | va_list args; | |
157 | va_start (args, fmt); | |
158 | vfprintf_filtered (gdb_stdlog, fmt, args); | |
159 | va_end (args); | |
160 | } | |
161 | } | |
162 | ||
163 | ||
164 | /* Convert a string into a printable representation, Return # byte in | |
165 | the new string. When LEN is >0 it specifies the size of the | |
166 | string. Otherwize strlen(oldstr) is used. */ | |
167 | ||
168 | static void | |
169 | monitor_printable_string (char *newstr, char *oldstr, int len) | |
c906108c | 170 | { |
c906108c | 171 | int ch; |
2df3850c JM |
172 | int i; |
173 | ||
174 | if (len <= 0) | |
175 | len = strlen (oldstr); | |
c906108c | 176 | |
2df3850c | 177 | for (i = 0; i < len; i++) |
c906108c | 178 | { |
2df3850c | 179 | ch = oldstr[i]; |
c906108c | 180 | switch (ch) |
c5aa993b | 181 | { |
c906108c SS |
182 | default: |
183 | if (isprint (ch)) | |
184 | *newstr++ = ch; | |
185 | ||
186 | else | |
187 | { | |
188 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
189 | newstr += 4; | |
190 | } | |
191 | break; | |
192 | ||
c5aa993b JM |
193 | case '\\': |
194 | *newstr++ = '\\'; | |
195 | *newstr++ = '\\'; | |
196 | break; | |
197 | case '\b': | |
198 | *newstr++ = '\\'; | |
199 | *newstr++ = 'b'; | |
200 | break; | |
201 | case '\f': | |
202 | *newstr++ = '\\'; | |
203 | *newstr++ = 't'; | |
204 | break; | |
205 | case '\n': | |
206 | *newstr++ = '\\'; | |
207 | *newstr++ = 'n'; | |
208 | break; | |
209 | case '\r': | |
210 | *newstr++ = '\\'; | |
211 | *newstr++ = 'r'; | |
212 | break; | |
213 | case '\t': | |
214 | *newstr++ = '\\'; | |
215 | *newstr++ = 't'; | |
216 | break; | |
217 | case '\v': | |
218 | *newstr++ = '\\'; | |
219 | *newstr++ = 'v'; | |
220 | break; | |
221 | } | |
c906108c SS |
222 | } |
223 | ||
224 | *newstr++ = '\0'; | |
c906108c SS |
225 | } |
226 | ||
227 | /* Print monitor errors with a string, converting the string to printable | |
228 | representation. */ | |
229 | ||
230 | static void | |
2df3850c JM |
231 | monitor_error (char *function, char *message, |
232 | CORE_ADDR memaddr, int len, char *string, int final_char) | |
c906108c | 233 | { |
c5aa993b | 234 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
c906108c | 235 | char *safe_string = alloca ((real_len * 4) + 1); |
2df3850c | 236 | monitor_printable_string (safe_string, string, real_len); |
c906108c SS |
237 | |
238 | if (final_char) | |
2df3850c | 239 | error ("%s (0x%s): %s: %s%c", function, paddr_nz (memaddr), message, safe_string, final_char); |
c906108c | 240 | else |
2df3850c | 241 | error ("%s (0x%s): %s: %s", function, paddr_nz (memaddr), message, safe_string); |
c906108c SS |
242 | } |
243 | ||
244 | /* Convert hex digit A to a number. */ | |
245 | ||
246 | static int | |
fba45db2 | 247 | fromhex (int a) |
c906108c SS |
248 | { |
249 | if (a >= '0' && a <= '9') | |
250 | return a - '0'; | |
251 | else if (a >= 'a' && a <= 'f') | |
252 | return a - 'a' + 10; | |
c5aa993b JM |
253 | else if (a >= 'A' && a <= 'F') |
254 | return a - 'A' + 10; | |
c906108c | 255 | else |
c5aa993b | 256 | error ("Invalid hex digit %d", a); |
c906108c SS |
257 | } |
258 | ||
259 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
260 | ||
261 | This function exists to get around the problem that many host platforms | |
262 | don't have a printf that can print 64-bit addresses. The %A format | |
263 | specification is recognized as a special case, and causes the argument | |
264 | to be printed as a 64-bit hexadecimal address. | |
265 | ||
266 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
267 | If it is a '%s' format, the argument is a string; otherwise the | |
268 | argument is assumed to be a long integer. | |
269 | ||
270 | %% is also turned into a single %. | |
c5aa993b JM |
271 | */ |
272 | ||
c906108c | 273 | static void |
fba45db2 | 274 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
c906108c SS |
275 | { |
276 | char format[10]; | |
277 | char fmt; | |
278 | char *p; | |
279 | int i; | |
280 | long arg_int; | |
281 | CORE_ADDR arg_addr; | |
282 | char *arg_string; | |
283 | ||
284 | for (p = pattern; *p; p++) | |
285 | { | |
286 | if (*p == '%') | |
287 | { | |
288 | /* Copy the format specifier to a separate buffer. */ | |
289 | format[0] = *p++; | |
290 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
291 | i++, p++) | |
292 | format[i] = *p; | |
293 | format[i] = fmt = *p; | |
c5aa993b | 294 | format[i + 1] = '\0'; |
c906108c SS |
295 | |
296 | /* Fetch the next argument and print it. */ | |
297 | switch (fmt) | |
298 | { | |
299 | case '%': | |
300 | strcpy (sndbuf, "%"); | |
301 | break; | |
302 | case 'A': | |
303 | arg_addr = va_arg (args, CORE_ADDR); | |
304 | strcpy (sndbuf, paddr_nz (arg_addr)); | |
305 | break; | |
306 | case 's': | |
307 | arg_string = va_arg (args, char *); | |
308 | sprintf (sndbuf, format, arg_string); | |
309 | break; | |
310 | default: | |
311 | arg_int = va_arg (args, long); | |
312 | sprintf (sndbuf, format, arg_int); | |
313 | break; | |
314 | } | |
315 | sndbuf += strlen (sndbuf); | |
316 | } | |
317 | else | |
318 | *sndbuf++ = *p; | |
319 | } | |
320 | *sndbuf = '\0'; | |
321 | } | |
322 | ||
323 | ||
324 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
325 | Works just like printf. */ | |
326 | ||
327 | void | |
c5aa993b | 328 | monitor_printf_noecho (char *pattern,...) |
c906108c SS |
329 | { |
330 | va_list args; | |
331 | char sndbuf[2000]; | |
332 | int len; | |
333 | ||
c906108c | 334 | va_start (args, pattern); |
c906108c SS |
335 | |
336 | monitor_vsprintf (sndbuf, pattern, args); | |
337 | ||
338 | len = strlen (sndbuf); | |
339 | if (len + 1 > sizeof sndbuf) | |
e1e9e218 | 340 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c | 341 | |
2df3850c | 342 | if (monitor_debug_p) |
c906108c SS |
343 | { |
344 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
2df3850c JM |
345 | monitor_printable_string (safe_string, sndbuf, 0); |
346 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c | 347 | } |
c5aa993b | 348 | |
c906108c SS |
349 | monitor_write (sndbuf, len); |
350 | } | |
351 | ||
352 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
353 | printf. */ | |
354 | ||
355 | void | |
c5aa993b | 356 | monitor_printf (char *pattern,...) |
c906108c SS |
357 | { |
358 | va_list args; | |
359 | char sndbuf[2000]; | |
360 | int len; | |
361 | ||
c906108c | 362 | va_start (args, pattern); |
c906108c SS |
363 | |
364 | monitor_vsprintf (sndbuf, pattern, args); | |
365 | ||
366 | len = strlen (sndbuf); | |
367 | if (len + 1 > sizeof sndbuf) | |
e1e9e218 | 368 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c | 369 | |
2df3850c | 370 | if (monitor_debug_p) |
c906108c SS |
371 | { |
372 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
2df3850c JM |
373 | monitor_printable_string (safe_string, sndbuf, 0); |
374 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c SS |
375 | } |
376 | ||
377 | monitor_write (sndbuf, len); | |
378 | ||
379 | /* We used to expect that the next immediate output was the characters we | |
380 | just output, but sometimes some extra junk appeared before the characters | |
381 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. | |
382 | So, just start searching for what we sent, and skip anything unknown. */ | |
2df3850c JM |
383 | monitor_debug ("ExpectEcho\n"); |
384 | monitor_expect (sndbuf, (char *) 0, 0); | |
c906108c SS |
385 | } |
386 | ||
387 | ||
388 | /* Write characters to the remote system. */ | |
389 | ||
390 | void | |
fba45db2 | 391 | monitor_write (char *buf, int buflen) |
c906108c | 392 | { |
c5aa993b | 393 | if (SERIAL_WRITE (monitor_desc, buf, buflen)) |
c906108c SS |
394 | fprintf_unfiltered (gdb_stderr, "SERIAL_WRITE failed: %s\n", |
395 | safe_strerror (errno)); | |
396 | } | |
397 | ||
398 | ||
399 | /* Read a binary character from the remote system, doing all the fancy | |
400 | timeout stuff, but without interpreting the character in any way, | |
401 | and without printing remote debug information. */ | |
402 | ||
403 | int | |
fba45db2 | 404 | monitor_readchar (void) |
c906108c SS |
405 | { |
406 | int c; | |
407 | int looping; | |
408 | ||
409 | do | |
410 | { | |
411 | looping = 0; | |
412 | c = SERIAL_READCHAR (monitor_desc, timeout); | |
413 | ||
414 | if (c >= 0) | |
c5aa993b | 415 | c &= 0xff; /* don't lose bit 7 */ |
c906108c SS |
416 | } |
417 | while (looping); | |
418 | ||
419 | if (c >= 0) | |
420 | return c; | |
421 | ||
422 | if (c == SERIAL_TIMEOUT) | |
c5aa993b | 423 | error ("Timeout reading from remote system."); |
c906108c SS |
424 | |
425 | perror_with_name ("remote-monitor"); | |
426 | } | |
427 | ||
428 | ||
429 | /* Read a character from the remote system, doing all the fancy | |
430 | timeout stuff. */ | |
431 | ||
432 | static int | |
fba45db2 | 433 | readchar (int timeout) |
c906108c SS |
434 | { |
435 | int c; | |
c5aa993b JM |
436 | static enum |
437 | { | |
438 | last_random, last_nl, last_cr, last_crnl | |
439 | } | |
440 | state = last_random; | |
c906108c SS |
441 | int looping; |
442 | ||
443 | do | |
444 | { | |
445 | looping = 0; | |
446 | c = SERIAL_READCHAR (monitor_desc, timeout); | |
447 | ||
448 | if (c >= 0) | |
449 | { | |
450 | c &= 0x7f; | |
c906108c SS |
451 | /* This seems to interfere with proper function of the |
452 | input stream */ | |
2df3850c | 453 | if (monitor_debug_p || remote_debug) |
c906108c SS |
454 | { |
455 | char buf[2]; | |
456 | buf[0] = c; | |
457 | buf[1] = '\0'; | |
458 | puts_debug ("read -->", buf, "<--"); | |
459 | } | |
c5aa993b | 460 | |
c906108c SS |
461 | } |
462 | ||
463 | /* Canonicialize \n\r combinations into one \r */ | |
464 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) | |
465 | { | |
466 | if ((c == '\r' && state == last_nl) | |
467 | || (c == '\n' && state == last_cr)) | |
468 | { | |
469 | state = last_crnl; | |
470 | looping = 1; | |
471 | } | |
472 | else if (c == '\r') | |
473 | state = last_cr; | |
474 | else if (c != '\n') | |
475 | state = last_random; | |
476 | else | |
477 | { | |
478 | state = last_nl; | |
479 | c = '\r'; | |
480 | } | |
481 | } | |
482 | } | |
483 | while (looping); | |
484 | ||
485 | if (c >= 0) | |
486 | return c; | |
487 | ||
488 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 489 | #if 0 |
c906108c SS |
490 | /* I fail to see how detaching here can be useful */ |
491 | if (in_monitor_wait) /* Watchdog went off */ | |
492 | { | |
493 | target_mourn_inferior (); | |
494 | error ("GDB serial timeout has expired. Target detached.\n"); | |
495 | } | |
496 | else | |
497 | #endif | |
498 | error ("Timeout reading from remote system."); | |
499 | ||
500 | perror_with_name ("remote-monitor"); | |
501 | } | |
502 | ||
503 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
504 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
505 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
506 | because STRING can't be found, return -1, else return number of chars in BUF | |
507 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
508 | will be at the end of BUF. */ | |
509 | ||
510 | int | |
fba45db2 | 511 | monitor_expect (char *string, char *buf, int buflen) |
c906108c SS |
512 | { |
513 | char *p = string; | |
514 | int obuflen = buflen; | |
515 | int c; | |
516 | extern struct target_ops *targ_ops; | |
517 | ||
2df3850c | 518 | if (monitor_debug_p) |
c906108c SS |
519 | { |
520 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
2df3850c JM |
521 | monitor_printable_string (safe_string, string, 0); |
522 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); | |
c906108c SS |
523 | } |
524 | ||
8edbea78 | 525 | immediate_quit++; |
c906108c SS |
526 | while (1) |
527 | { | |
528 | if (buf) | |
529 | { | |
530 | if (buflen < 2) | |
531 | { | |
532 | *buf = '\000'; | |
8edbea78 | 533 | immediate_quit--; |
c906108c SS |
534 | return -1; |
535 | } | |
536 | ||
537 | c = readchar (timeout); | |
538 | if (c == '\000') | |
539 | continue; | |
540 | *buf++ = c; | |
541 | buflen--; | |
542 | } | |
543 | else | |
544 | c = readchar (timeout); | |
545 | ||
546 | /* Don't expect any ^C sent to be echoed */ | |
c5aa993b | 547 | |
c906108c SS |
548 | if (*p == '\003' || c == *p) |
549 | { | |
550 | p++; | |
551 | if (*p == '\0') | |
552 | { | |
8edbea78 | 553 | immediate_quit--; |
c906108c SS |
554 | |
555 | if (buf) | |
556 | { | |
557 | *buf++ = '\000'; | |
558 | return obuflen - buflen; | |
559 | } | |
560 | else | |
561 | return 0; | |
562 | } | |
563 | } | |
564 | else if ((c == '\021' || c == '\023') && | |
565 | (STREQ (targ_ops->to_shortname, "m32r") | |
566 | || STREQ (targ_ops->to_shortname, "mon2000"))) | |
c5aa993b | 567 | { /* m32r monitor emits random DC1/DC3 chars */ |
c906108c SS |
568 | continue; |
569 | } | |
570 | else | |
571 | { | |
a0b3c4fd JM |
572 | /* We got a character that doesn't match the string. We need to |
573 | back up p, but how far? If we're looking for "..howdy" and the | |
574 | monitor sends "...howdy"? There's certainly a match in there, | |
575 | but when we receive the third ".", we won't find it if we just | |
576 | restart the matching at the beginning of the string. | |
577 | ||
578 | This is a Boyer-Moore kind of situation. We want to reset P to | |
579 | the end of the longest prefix of STRING that is a suffix of | |
580 | what we've read so far. In the example above, that would be | |
581 | ".." --- the longest prefix of "..howdy" that is a suffix of | |
582 | "...". This longest prefix could be the empty string, if C | |
583 | is nowhere to be found in STRING. | |
584 | ||
585 | If this longest prefix is not the empty string, it must contain | |
586 | C, so let's search from the end of STRING for instances of C, | |
587 | and see if the portion of STRING before that is a suffix of | |
588 | what we read before C. Actually, we can search backwards from | |
589 | p, since we know no prefix can be longer than that. | |
590 | ||
591 | Note that we can use STRING itself, along with C, as a record | |
592 | of what we've received so far. :) */ | |
593 | int i; | |
594 | ||
595 | for (i = (p - string) - 1; i >= 0; i--) | |
596 | if (string[i] == c) | |
597 | { | |
598 | /* Is this prefix a suffix of what we've read so far? | |
599 | In other words, does | |
600 | string[0 .. i-1] == string[p - i, p - 1]? */ | |
601 | if (! memcmp (string, p - i, i)) | |
602 | { | |
603 | p = string + i + 1; | |
604 | break; | |
605 | } | |
606 | } | |
607 | if (i < 0) | |
608 | p = string; | |
c906108c SS |
609 | } |
610 | } | |
611 | } | |
612 | ||
613 | /* Search for a regexp. */ | |
614 | ||
615 | static int | |
fba45db2 | 616 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
c906108c SS |
617 | { |
618 | char *mybuf; | |
619 | char *p; | |
2df3850c | 620 | monitor_debug ("MON Expecting regexp\n"); |
c906108c SS |
621 | if (buf) |
622 | mybuf = buf; | |
623 | else | |
624 | { | |
d4f3574e SS |
625 | mybuf = alloca (TARGET_BUF_SIZE); |
626 | buflen = TARGET_BUF_SIZE; | |
c906108c SS |
627 | } |
628 | ||
629 | p = mybuf; | |
630 | while (1) | |
631 | { | |
632 | int retval; | |
633 | ||
634 | if (p - mybuf >= buflen) | |
635 | { /* Buffer about to overflow */ | |
636 | ||
637 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
638 | great, but it usually works... */ | |
639 | ||
640 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
641 | p = mybuf + buflen / 2; | |
642 | } | |
643 | ||
644 | *p++ = readchar (timeout); | |
645 | ||
646 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
647 | if (retval >= 0) | |
648 | return 1; | |
649 | } | |
650 | } | |
651 | ||
652 | /* Keep discarding input until we see the MONITOR prompt. | |
653 | ||
654 | The convention for dealing with the prompt is that you | |
655 | o give your command | |
656 | o *then* wait for the prompt. | |
657 | ||
658 | Thus the last thing that a procedure does with the serial line will | |
659 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
660 | wait for the prompt, because the terminal is being handed over to | |
661 | the inferior. However, the next thing which happens after that is | |
662 | a monitor_wait which does wait for the prompt. Note that this | |
663 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
664 | getting into states from which we can't recover. */ | |
665 | ||
666 | int | |
fba45db2 | 667 | monitor_expect_prompt (char *buf, int buflen) |
c906108c | 668 | { |
2df3850c JM |
669 | monitor_debug ("MON Expecting prompt\n"); |
670 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
c906108c SS |
671 | } |
672 | ||
673 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
674 | them in registers starting at REGNO. */ | |
675 | ||
676 | #if 0 | |
677 | static unsigned long | |
fba45db2 | 678 | get_hex_word (void) |
c906108c SS |
679 | { |
680 | unsigned long val; | |
681 | int i; | |
682 | int ch; | |
683 | ||
684 | do | |
685 | ch = readchar (timeout); | |
c5aa993b | 686 | while (isspace (ch)); |
c906108c SS |
687 | |
688 | val = from_hex (ch); | |
689 | ||
690 | for (i = 7; i >= 1; i--) | |
691 | { | |
692 | ch = readchar (timeout); | |
693 | if (!isxdigit (ch)) | |
694 | break; | |
695 | val = (val << 4) | from_hex (ch); | |
696 | } | |
697 | ||
698 | return val; | |
699 | } | |
700 | #endif | |
701 | ||
702 | static void | |
fba45db2 KB |
703 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
704 | char *fastmap) | |
c906108c SS |
705 | { |
706 | int tmp; | |
707 | const char *val; | |
708 | ||
709 | compiled_pattern->fastmap = fastmap; | |
710 | ||
711 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
712 | val = re_compile_pattern (pattern, | |
713 | strlen (pattern), | |
714 | compiled_pattern); | |
715 | re_set_syntax (tmp); | |
716 | ||
717 | if (val) | |
718 | error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern, val); | |
719 | ||
720 | if (fastmap) | |
721 | re_compile_fastmap (compiled_pattern); | |
722 | } | |
723 | ||
724 | /* Open a connection to a remote debugger. NAME is the filename used | |
725 | for communication. */ | |
726 | ||
727 | void | |
fba45db2 | 728 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
c906108c SS |
729 | { |
730 | char *name; | |
731 | char **p; | |
732 | ||
733 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
734 | error ("Magic number of monitor_ops struct wrong."); | |
735 | ||
736 | targ_ops = mon_ops->target; | |
737 | name = targ_ops->to_shortname; | |
738 | ||
739 | if (!args) | |
740 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ | |
741 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); | |
742 | ||
743 | target_preopen (from_tty); | |
744 | ||
745 | /* Setup pattern for register dump */ | |
746 | ||
747 | if (mon_ops->register_pattern) | |
748 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
749 | register_fastmap); | |
750 | ||
751 | if (mon_ops->getmem.resp_delim) | |
752 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
753 | getmem_resp_delim_fastmap); | |
754 | ||
755 | unpush_target (targ_ops); | |
756 | ||
757 | if (dev_name) | |
b8c9b27d | 758 | xfree (dev_name); |
4fcf66da | 759 | dev_name = xstrdup (args); |
c906108c SS |
760 | |
761 | monitor_desc = SERIAL_OPEN (dev_name); | |
762 | ||
763 | if (!monitor_desc) | |
764 | perror_with_name (dev_name); | |
765 | ||
766 | if (baud_rate != -1) | |
767 | { | |
768 | if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) | |
769 | { | |
770 | SERIAL_CLOSE (monitor_desc); | |
771 | perror_with_name (dev_name); | |
772 | } | |
773 | } | |
c5aa993b | 774 | |
c906108c SS |
775 | SERIAL_RAW (monitor_desc); |
776 | ||
777 | SERIAL_FLUSH_INPUT (monitor_desc); | |
778 | ||
779 | /* some systems only work with 2 stop bits */ | |
780 | ||
781 | SERIAL_SETSTOPBITS (monitor_desc, mon_ops->stopbits); | |
782 | ||
783 | current_monitor = mon_ops; | |
784 | ||
785 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
786 | then send the init strings. Last, remove all breakpoints. */ | |
787 | ||
788 | if (current_monitor->stop) | |
789 | { | |
790 | monitor_stop (); | |
791 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) | |
c5aa993b | 792 | { |
2df3850c | 793 | monitor_debug ("EXP Open echo\n"); |
c5aa993b JM |
794 | monitor_expect_prompt (NULL, 0); |
795 | } | |
c906108c SS |
796 | } |
797 | ||
798 | /* wake up the monitor and see if it's alive */ | |
799 | for (p = mon_ops->init; *p != NULL; p++) | |
800 | { | |
801 | /* Some of the characters we send may not be echoed, | |
c5aa993b JM |
802 | but we hope to get a prompt at the end of it all. */ |
803 | ||
c906108c | 804 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 805 | monitor_printf (*p); |
c906108c | 806 | else |
c5aa993b | 807 | monitor_printf_noecho (*p); |
c906108c SS |
808 | monitor_expect_prompt (NULL, 0); |
809 | } | |
810 | ||
811 | SERIAL_FLUSH_INPUT (monitor_desc); | |
812 | ||
9e086581 JM |
813 | /* Alloc breakpoints */ |
814 | if (mon_ops->set_break != NULL) | |
815 | { | |
816 | if (mon_ops->num_breakpoints == 0) | |
817 | mon_ops->num_breakpoints = 8; | |
818 | ||
819 | breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
820 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
821 | } | |
822 | ||
c906108c SS |
823 | /* Remove all breakpoints */ |
824 | ||
825 | if (mon_ops->clr_all_break) | |
826 | { | |
827 | monitor_printf (mon_ops->clr_all_break); | |
828 | monitor_expect_prompt (NULL, 0); | |
829 | } | |
830 | ||
831 | if (from_tty) | |
832 | printf_unfiltered ("Remote target %s connected to %s\n", name, dev_name); | |
833 | ||
834 | push_target (targ_ops); | |
835 | ||
39f77062 | 836 | inferior_ptid = pid_to_ptid (42000); /* Make run command think we are busy... */ |
c906108c SS |
837 | |
838 | /* Give monitor_wait something to read */ | |
839 | ||
840 | monitor_printf (current_monitor->line_term); | |
841 | ||
c906108c SS |
842 | start_remote (); |
843 | } | |
844 | ||
845 | /* Close out all files and local state before this target loses | |
846 | control. */ | |
847 | ||
848 | void | |
fba45db2 | 849 | monitor_close (int quitting) |
c906108c SS |
850 | { |
851 | if (monitor_desc) | |
852 | SERIAL_CLOSE (monitor_desc); | |
9e086581 JM |
853 | |
854 | /* Free breakpoint memory */ | |
855 | if (breakaddr != NULL) | |
856 | { | |
b8c9b27d | 857 | xfree (breakaddr); |
9e086581 JM |
858 | breakaddr = NULL; |
859 | } | |
860 | ||
c906108c SS |
861 | monitor_desc = NULL; |
862 | } | |
863 | ||
864 | /* Terminate the open connection to the remote debugger. Use this | |
865 | when you want to detach and do something else with your gdb. */ | |
866 | ||
867 | static void | |
fba45db2 | 868 | monitor_detach (char *args, int from_tty) |
c906108c SS |
869 | { |
870 | pop_target (); /* calls monitor_close to do the real work */ | |
871 | if (from_tty) | |
872 | printf_unfiltered ("Ending remote %s debugging\n", target_shortname); | |
873 | } | |
874 | ||
875 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
876 | ||
877 | char * | |
fba45db2 | 878 | monitor_supply_register (int regno, char *valstr) |
c906108c | 879 | { |
d4f3574e | 880 | ULONGEST val; |
c906108c SS |
881 | unsigned char regbuf[MAX_REGISTER_RAW_SIZE]; |
882 | char *p; | |
883 | ||
4ce44c66 | 884 | val = 0; |
d4f3574e SS |
885 | p = valstr; |
886 | while (p && *p != '\0') | |
887 | { | |
888 | if (*p == '\r' || *p == '\n') | |
889 | { | |
890 | while (*p != '\0') | |
891 | p++; | |
892 | break; | |
893 | } | |
894 | if (isspace (*p)) | |
895 | { | |
896 | p++; | |
897 | continue; | |
898 | } | |
899 | if (!isxdigit (*p) && *p != 'x') | |
900 | { | |
901 | break; | |
902 | } | |
903 | ||
904 | val <<= 4; | |
905 | val += fromhex (*p++); | |
906 | } | |
2df3850c | 907 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
c906108c | 908 | |
1fcef334 | 909 | if (val == 0 && valstr == p) |
c906108c SS |
910 | error ("monitor_supply_register (%d): bad value from monitor: %s.", |
911 | regno, valstr); | |
912 | ||
913 | /* supply register stores in target byte order, so swap here */ | |
914 | ||
915 | store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), val); | |
916 | ||
917 | supply_register (regno, regbuf); | |
918 | ||
919 | return p; | |
920 | } | |
921 | ||
922 | /* Tell the remote machine to resume. */ | |
923 | ||
c906108c | 924 | static void |
39f77062 | 925 | monitor_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c SS |
926 | { |
927 | /* Some monitors require a different command when starting a program */ | |
2df3850c | 928 | monitor_debug ("MON resume\n"); |
c906108c SS |
929 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
930 | { | |
931 | first_time = 0; | |
932 | monitor_printf ("run\r"); | |
933 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
c5aa993b | 934 | dump_reg_flag = 1; |
c906108c SS |
935 | return; |
936 | } | |
c906108c SS |
937 | if (step) |
938 | monitor_printf (current_monitor->step); | |
939 | else | |
940 | { | |
941 | if (current_monitor->continue_hook) | |
c5aa993b JM |
942 | (*current_monitor->continue_hook) (); |
943 | else | |
944 | monitor_printf (current_monitor->cont); | |
c906108c SS |
945 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
946 | dump_reg_flag = 1; | |
947 | } | |
948 | } | |
949 | ||
950 | /* Parse the output of a register dump command. A monitor specific | |
951 | regexp is used to extract individual register descriptions of the | |
952 | form REG=VAL. Each description is split up into a name and a value | |
953 | string which are passed down to monitor specific code. */ | |
954 | ||
955 | static void | |
fba45db2 | 956 | parse_register_dump (char *buf, int len) |
c906108c | 957 | { |
2df3850c JM |
958 | monitor_debug ("MON Parsing register dump\n"); |
959 | while (1) | |
c906108c SS |
960 | { |
961 | int regnamelen, vallen; | |
962 | char *regname, *val; | |
963 | /* Element 0 points to start of register name, and element 1 | |
c5aa993b | 964 | points to the start of the register value. */ |
c906108c SS |
965 | struct re_registers register_strings; |
966 | ||
967 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
968 | ||
969 | if (re_search (®ister_pattern, buf, len, 0, len, | |
970 | ®ister_strings) == -1) | |
971 | break; | |
972 | ||
973 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
974 | regname = buf + register_strings.start[1]; | |
975 | vallen = register_strings.end[2] - register_strings.start[2]; | |
976 | val = buf + register_strings.start[2]; | |
977 | ||
978 | current_monitor->supply_register (regname, regnamelen, val, vallen); | |
979 | ||
980 | buf += register_strings.end[0]; | |
981 | len -= register_strings.end[0]; | |
982 | } | |
983 | } | |
984 | ||
985 | /* Send ^C to target to halt it. Target will respond, and send us a | |
986 | packet. */ | |
987 | ||
988 | static void | |
fba45db2 | 989 | monitor_interrupt (int signo) |
c906108c SS |
990 | { |
991 | /* If this doesn't work, try more severe steps. */ | |
992 | signal (signo, monitor_interrupt_twice); | |
c5aa993b | 993 | |
2df3850c JM |
994 | if (monitor_debug_p || remote_debug) |
995 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); | |
c906108c SS |
996 | |
997 | target_stop (); | |
998 | } | |
999 | ||
1000 | /* The user typed ^C twice. */ | |
1001 | ||
1002 | static void | |
fba45db2 | 1003 | monitor_interrupt_twice (int signo) |
c906108c SS |
1004 | { |
1005 | signal (signo, ofunc); | |
c5aa993b | 1006 | |
c906108c SS |
1007 | monitor_interrupt_query (); |
1008 | ||
1009 | signal (signo, monitor_interrupt); | |
1010 | } | |
1011 | ||
1012 | /* Ask the user what to do when an interrupt is received. */ | |
1013 | ||
1014 | static void | |
fba45db2 | 1015 | monitor_interrupt_query (void) |
c906108c SS |
1016 | { |
1017 | target_terminal_ours (); | |
1018 | ||
1019 | if (query ("Interrupted while waiting for the program.\n\ | |
1020 | Give up (and stop debugging it)? ")) | |
1021 | { | |
1022 | target_mourn_inferior (); | |
1023 | return_to_top_level (RETURN_QUIT); | |
1024 | } | |
1025 | ||
1026 | target_terminal_inferior (); | |
1027 | } | |
1028 | ||
1029 | static void | |
fba45db2 | 1030 | monitor_wait_cleanup (void *old_timeout) |
c906108c | 1031 | { |
c5aa993b | 1032 | timeout = *(int *) old_timeout; |
c906108c SS |
1033 | signal (SIGINT, ofunc); |
1034 | in_monitor_wait = 0; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | ||
c5aa993b JM |
1039 | void |
1040 | monitor_wait_filter (char *buf, | |
1041 | int bufmax, | |
1042 | int *ext_resp_len, | |
1043 | struct target_waitstatus *status | |
1044 | ) | |
c906108c | 1045 | { |
c5aa993b | 1046 | int resp_len; |
c906108c SS |
1047 | do |
1048 | { | |
1049 | resp_len = monitor_expect_prompt (buf, bufmax); | |
c5aa993b | 1050 | *ext_resp_len = resp_len; |
c906108c SS |
1051 | |
1052 | if (resp_len <= 0) | |
1053 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1054 | } | |
1055 | while (resp_len < 0); | |
1056 | ||
1057 | /* Print any output characters that were preceded by ^O. */ | |
1058 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1059 | if (monitor_debug_p || remote_debug |
1060 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1061 | { |
1062 | int i; | |
1063 | ||
1064 | for (i = 0; i < resp_len - 1; i++) | |
1065 | if (buf[i] == 0x0f) | |
1066 | putchar_unfiltered (buf[++i]); | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | ||
1071 | ||
1072 | /* Wait until the remote machine stops, then return, storing status in | |
1073 | status just as `wait' would. */ | |
1074 | ||
39f77062 KB |
1075 | static ptid_t |
1076 | monitor_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c SS |
1077 | { |
1078 | int old_timeout = timeout; | |
d4f3574e | 1079 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1080 | int resp_len; |
1081 | struct cleanup *old_chain; | |
1082 | ||
1083 | status->kind = TARGET_WAITKIND_EXITED; | |
1084 | status->value.integer = 0; | |
1085 | ||
1086 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
2df3850c | 1087 | monitor_debug ("MON wait\n"); |
c906108c | 1088 | |
7a292a7a | 1089 | #if 0 |
c5aa993b JM |
1090 | /* This is somthing other than a maintenance command */ |
1091 | in_monitor_wait = 1; | |
c906108c SS |
1092 | timeout = watchdog > 0 ? watchdog : -1; |
1093 | #else | |
2df3850c | 1094 | timeout = -1; /* Don't time out -- user program is running. */ |
c906108c SS |
1095 | #endif |
1096 | ||
1097 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1098 | ||
1099 | if (current_monitor->wait_filter) | |
c5aa993b JM |
1100 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
1101 | else | |
1102 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); | |
1103 | ||
1104 | #if 0 /* Transferred to monitor wait filter */ | |
c906108c SS |
1105 | do |
1106 | { | |
1107 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1108 | ||
1109 | if (resp_len <= 0) | |
1110 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1111 | } | |
1112 | while (resp_len < 0); | |
1113 | ||
1114 | /* Print any output characters that were preceded by ^O. */ | |
1115 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1116 | if (monitor_debug_p || remote_debug |
1117 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1118 | { |
1119 | int i; | |
1120 | ||
1121 | for (i = 0; i < resp_len - 1; i++) | |
1122 | if (buf[i] == 0x0f) | |
1123 | putchar_unfiltered (buf[++i]); | |
1124 | } | |
c5aa993b | 1125 | #endif |
c906108c SS |
1126 | |
1127 | signal (SIGINT, ofunc); | |
1128 | ||
1129 | timeout = old_timeout; | |
1130 | #if 0 | |
1131 | if (dump_reg_flag && current_monitor->dump_registers) | |
1132 | { | |
1133 | dump_reg_flag = 0; | |
1134 | monitor_printf (current_monitor->dump_registers); | |
1135 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1136 | } | |
1137 | ||
1138 | if (current_monitor->register_pattern) | |
1139 | parse_register_dump (buf, resp_len); | |
1140 | #else | |
2df3850c | 1141 | monitor_debug ("Wait fetching registers after stop\n"); |
c5aa993b JM |
1142 | monitor_dump_regs (); |
1143 | #endif | |
c906108c SS |
1144 | |
1145 | status->kind = TARGET_WAITKIND_STOPPED; | |
1146 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1147 | ||
1148 | discard_cleanups (old_chain); | |
1149 | ||
1150 | in_monitor_wait = 0; | |
1151 | ||
39f77062 | 1152 | return inferior_ptid; |
c906108c SS |
1153 | } |
1154 | ||
1155 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns | |
1156 | errno value. */ | |
1157 | ||
1158 | static void | |
fba45db2 | 1159 | monitor_fetch_register (int regno) |
c906108c SS |
1160 | { |
1161 | char *name; | |
86110418 MS |
1162 | char *zerobuf; |
1163 | char *regbuf; | |
c906108c SS |
1164 | int i; |
1165 | ||
86110418 MS |
1166 | regbuf = alloca (MAX_REGISTER_RAW_SIZE * 2 + 1); |
1167 | zerobuf = alloca (MAX_REGISTER_RAW_SIZE); | |
1168 | memset (zerobuf, 0, MAX_REGISTER_RAW_SIZE); | |
1169 | ||
c906108c | 1170 | name = current_monitor->regnames[regno]; |
2df3850c | 1171 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
c906108c | 1172 | |
2df3850c | 1173 | if (!name || (*name == '\0')) |
7a292a7a | 1174 | { |
2df3850c JM |
1175 | monitor_debug ("No register known for %d\n", regno); |
1176 | supply_register (regno, zerobuf); | |
c906108c SS |
1177 | return; |
1178 | } | |
1179 | ||
1180 | /* send the register examine command */ | |
1181 | ||
1182 | monitor_printf (current_monitor->getreg.cmd, name); | |
1183 | ||
1184 | /* If RESP_DELIM is specified, we search for that as a leading | |
1185 | delimiter for the register value. Otherwise, we just start | |
1186 | searching from the start of the buf. */ | |
1187 | ||
1188 | if (current_monitor->getreg.resp_delim) | |
1189 | { | |
2df3850c JM |
1190 | monitor_debug ("EXP getreg.resp_delim\n"); |
1191 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
c906108c SS |
1192 | /* Handle case of first 32 registers listed in pairs. */ |
1193 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a | 1194 | && (regno & 1) != 0 && regno < 32) |
c5aa993b | 1195 | { |
2df3850c | 1196 | monitor_debug ("EXP getreg.resp_delim\n"); |
c906108c SS |
1197 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1198 | } | |
1199 | } | |
1200 | ||
1201 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ | |
c5aa993b | 1202 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1203 | { |
1204 | int c; | |
1205 | c = readchar (timeout); | |
1206 | while (c == ' ') | |
1207 | c = readchar (timeout); | |
1208 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1209 | ; | |
1210 | else | |
c5aa993b JM |
1211 | error ("Bad value returned from monitor while fetching register %x.", |
1212 | regno); | |
c906108c SS |
1213 | } |
1214 | ||
1215 | /* Read upto the maximum number of hex digits for this register, skipping | |
1216 | spaces, but stop reading if something else is seen. Some monitors | |
1217 | like to drop leading zeros. */ | |
1218 | ||
1219 | for (i = 0; i < REGISTER_RAW_SIZE (regno) * 2; i++) | |
1220 | { | |
1221 | int c; | |
1222 | c = readchar (timeout); | |
1223 | while (c == ' ') | |
1224 | c = readchar (timeout); | |
1225 | ||
1226 | if (!isxdigit (c)) | |
1227 | break; | |
1228 | ||
1229 | regbuf[i] = c; | |
1230 | } | |
1231 | ||
1232 | regbuf[i] = '\000'; /* terminate the number */ | |
2df3850c | 1233 | monitor_debug ("REGVAL '%s'\n", regbuf); |
c906108c SS |
1234 | |
1235 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1236 | is present), we will send TERM_CMD if that is present. In any | |
1237 | case, we collect all of the output into buf, and then wait for | |
1238 | the normal prompt. */ | |
1239 | ||
1240 | if (current_monitor->getreg.term) | |
1241 | { | |
2df3850c JM |
1242 | monitor_debug ("EXP getreg.term\n"); |
1243 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ | |
c906108c SS |
1244 | } |
1245 | ||
1246 | if (current_monitor->getreg.term_cmd) | |
c5aa993b | 1247 | { |
2df3850c JM |
1248 | monitor_debug ("EMIT getreg.term.cmd\n"); |
1249 | monitor_printf (current_monitor->getreg.term_cmd); | |
c906108c | 1250 | } |
c5aa993b JM |
1251 | if (!current_monitor->getreg.term || /* Already expected or */ |
1252 | current_monitor->getreg.term_cmd) /* ack expected */ | |
1253 | monitor_expect_prompt (NULL, 0); /* get response */ | |
c906108c SS |
1254 | |
1255 | monitor_supply_register (regno, regbuf); | |
1256 | } | |
1257 | ||
1258 | /* Sometimes, it takes several commands to dump the registers */ | |
1259 | /* This is a primitive for use by variations of monitor interfaces in | |
1260 | case they need to compose the operation. | |
c5aa993b JM |
1261 | */ |
1262 | int | |
1263 | monitor_dump_reg_block (char *block_cmd) | |
c906108c | 1264 | { |
d4f3574e | 1265 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1266 | int resp_len; |
1267 | monitor_printf (block_cmd); | |
1268 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1269 | parse_register_dump (buf, resp_len); | |
c5aa993b | 1270 | return 1; |
c906108c SS |
1271 | } |
1272 | ||
1273 | ||
1274 | /* Read the remote registers into the block regs. */ | |
1275 | /* Call the specific function if it has been provided */ | |
1276 | ||
1277 | static void | |
fba45db2 | 1278 | monitor_dump_regs (void) |
c906108c | 1279 | { |
d4f3574e | 1280 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1281 | int resp_len; |
1282 | if (current_monitor->dumpregs) | |
c5aa993b JM |
1283 | (*(current_monitor->dumpregs)) (); /* call supplied function */ |
1284 | else if (current_monitor->dump_registers) /* default version */ | |
1285 | { | |
1286 | monitor_printf (current_monitor->dump_registers); | |
c906108c SS |
1287 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
1288 | parse_register_dump (buf, resp_len); | |
1289 | } | |
1290 | else | |
e1e9e218 | 1291 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); /* Need some way to read registers */ |
c906108c SS |
1292 | } |
1293 | ||
1294 | static void | |
fba45db2 | 1295 | monitor_fetch_registers (int regno) |
c906108c | 1296 | { |
2df3850c | 1297 | monitor_debug ("MON fetchregs\n"); |
c5aa993b | 1298 | if (current_monitor->getreg.cmd) |
c906108c SS |
1299 | { |
1300 | if (regno >= 0) | |
1301 | { | |
1302 | monitor_fetch_register (regno); | |
1303 | return; | |
1304 | } | |
1305 | ||
1306 | for (regno = 0; regno < NUM_REGS; regno++) | |
1307 | monitor_fetch_register (regno); | |
1308 | } | |
c5aa993b JM |
1309 | else |
1310 | { | |
1311 | monitor_dump_regs (); | |
1312 | } | |
c906108c SS |
1313 | } |
1314 | ||
1315 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1316 | ||
1317 | static void | |
fba45db2 | 1318 | monitor_store_register (int regno) |
c906108c SS |
1319 | { |
1320 | char *name; | |
d4f3574e | 1321 | ULONGEST val; |
c906108c SS |
1322 | |
1323 | name = current_monitor->regnames[regno]; | |
1324 | if (!name || (*name == '\0')) | |
c5aa993b | 1325 | { |
2df3850c JM |
1326 | monitor_debug ("MON Cannot store unknown register\n"); |
1327 | return; | |
c906108c SS |
1328 | } |
1329 | ||
1330 | val = read_register (regno); | |
5683e87a AC |
1331 | monitor_debug ("MON storeg %d %s\n", regno, |
1332 | phex (val, REGISTER_RAW_SIZE (regno))); | |
c906108c SS |
1333 | |
1334 | /* send the register deposit command */ | |
1335 | ||
2df3850c | 1336 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
c906108c SS |
1337 | monitor_printf (current_monitor->setreg.cmd, val, name); |
1338 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1339 | monitor_printf (current_monitor->setreg.cmd, name); | |
1340 | else | |
1341 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1342 | ||
1343 | if (current_monitor->setreg.term) | |
c5aa993b | 1344 | { |
2df3850c JM |
1345 | monitor_debug ("EXP setreg.term\n"); |
1346 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
c906108c | 1347 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
2df3850c | 1348 | monitor_printf ("%s\r", paddr_nz (val)); |
c906108c SS |
1349 | monitor_expect_prompt (NULL, 0); |
1350 | } | |
1351 | else | |
1352 | monitor_expect_prompt (NULL, 0); | |
c5aa993b JM |
1353 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ |
1354 | { | |
2df3850c | 1355 | monitor_debug ("EXP setreg_termcmd\n"); |
c5aa993b JM |
1356 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
1357 | monitor_expect_prompt (NULL, 0); | |
c906108c | 1358 | } |
c5aa993b | 1359 | } /* monitor_store_register */ |
c906108c SS |
1360 | |
1361 | /* Store the remote registers. */ | |
1362 | ||
1363 | static void | |
fba45db2 | 1364 | monitor_store_registers (int regno) |
c906108c SS |
1365 | { |
1366 | if (regno >= 0) | |
1367 | { | |
1368 | monitor_store_register (regno); | |
1369 | return; | |
1370 | } | |
1371 | ||
1372 | for (regno = 0; regno < NUM_REGS; regno++) | |
1373 | monitor_store_register (regno); | |
1374 | } | |
1375 | ||
1376 | /* Get ready to modify the registers array. On machines which store | |
1377 | individual registers, this doesn't need to do anything. On machines | |
1378 | which store all the registers in one fell swoop, this makes sure | |
1379 | that registers contains all the registers from the program being | |
1380 | debugged. */ | |
1381 | ||
1382 | static void | |
fba45db2 | 1383 | monitor_prepare_to_store (void) |
c906108c SS |
1384 | { |
1385 | /* Do nothing, since we can store individual regs */ | |
1386 | } | |
1387 | ||
1388 | static void | |
fba45db2 | 1389 | monitor_files_info (struct target_ops *ops) |
c906108c SS |
1390 | { |
1391 | printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate); | |
1392 | } | |
1393 | ||
1394 | static int | |
fba45db2 | 1395 | monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1396 | { |
c5aa993b | 1397 | unsigned int val, hostval; |
c906108c SS |
1398 | char *cmd; |
1399 | int i; | |
1400 | ||
2df3850c | 1401 | monitor_debug ("MON write %d %s\n", len, paddr (memaddr)); |
c906108c | 1402 | |
2df3850c | 1403 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
c906108c SS |
1404 | memaddr = ADDR_BITS_REMOVE (memaddr); |
1405 | ||
1406 | /* Use memory fill command for leading 0 bytes. */ | |
1407 | ||
1408 | if (current_monitor->fill) | |
1409 | { | |
1410 | for (i = 0; i < len; i++) | |
1411 | if (myaddr[i] != 0) | |
1412 | break; | |
1413 | ||
1414 | if (i > 4) /* More than 4 zeros is worth doing */ | |
1415 | { | |
2df3850c JM |
1416 | monitor_debug ("MON FILL %d\n", i); |
1417 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
c5aa993b JM |
1418 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0); |
1419 | else | |
1420 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
c906108c SS |
1421 | |
1422 | monitor_expect_prompt (NULL, 0); | |
1423 | ||
1424 | return i; | |
1425 | } | |
1426 | } | |
1427 | ||
1428 | #if 0 | |
1429 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1430 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1431 | { | |
1432 | len = 8; | |
1433 | cmd = current_monitor->setmem.cmdll; | |
1434 | } | |
1435 | else | |
1436 | #endif | |
1437 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1438 | { | |
1439 | len = 4; | |
1440 | cmd = current_monitor->setmem.cmdl; | |
1441 | } | |
1442 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1443 | { | |
1444 | len = 2; | |
1445 | cmd = current_monitor->setmem.cmdw; | |
1446 | } | |
1447 | else | |
1448 | { | |
1449 | len = 1; | |
1450 | cmd = current_monitor->setmem.cmdb; | |
1451 | } | |
1452 | ||
1453 | val = extract_unsigned_integer (myaddr, len); | |
c5aa993b | 1454 | |
c906108c | 1455 | if (len == 4) |
c5aa993b JM |
1456 | { |
1457 | hostval = *(unsigned int *) myaddr; | |
2df3850c | 1458 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
c906108c SS |
1459 | } |
1460 | ||
1461 | ||
1462 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1463 | monitor_printf_noecho (cmd, memaddr, val); | |
1464 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1465 | { | |
1466 | ||
1467 | monitor_printf_noecho (cmd, memaddr); | |
1468 | ||
1469 | if (current_monitor->setmem.term) | |
c5aa993b | 1470 | { |
2df3850c | 1471 | monitor_debug ("EXP setmem.term"); |
c906108c SS |
1472 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
1473 | monitor_printf ("%x\r", val); | |
1474 | } | |
1475 | if (current_monitor->setmem.term_cmd) | |
c5aa993b JM |
1476 | { /* Emit this to get out of the memory editing state */ |
1477 | monitor_printf ("%s", current_monitor->setmem.term_cmd); | |
c906108c SS |
1478 | /* Drop through to expecting a prompt */ |
1479 | } | |
1480 | } | |
1481 | else | |
1482 | monitor_printf (cmd, memaddr, val); | |
1483 | ||
1484 | monitor_expect_prompt (NULL, 0); | |
1485 | ||
1486 | return len; | |
1487 | } | |
1488 | ||
1489 | ||
1490 | static int | |
fba45db2 | 1491 | monitor_write_even_block (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1492 | { |
c5aa993b JM |
1493 | unsigned int val; |
1494 | int written = 0;; | |
c906108c | 1495 | /* Enter the sub mode */ |
c5aa993b JM |
1496 | monitor_printf (current_monitor->setmem.cmdl, memaddr); |
1497 | monitor_expect_prompt (NULL, 0); | |
1498 | ||
c906108c SS |
1499 | while (len) |
1500 | { | |
c5aa993b JM |
1501 | val = extract_unsigned_integer (myaddr, 4); /* REALLY */ |
1502 | monitor_printf ("%x\r", val); | |
1503 | myaddr += 4; | |
1504 | memaddr += 4; | |
1505 | written += 4; | |
2df3850c | 1506 | monitor_debug (" @ %s\n", paddr (memaddr)); |
c906108c | 1507 | /* If we wanted to, here we could validate the address */ |
2df3850c | 1508 | monitor_expect_prompt (NULL, 0); |
c906108c SS |
1509 | } |
1510 | /* Now exit the sub mode */ | |
1511 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1512 | monitor_expect_prompt (NULL, 0); |
1513 | return written; | |
c906108c SS |
1514 | } |
1515 | ||
1516 | ||
c5aa993b | 1517 | static int |
fba45db2 | 1518 | monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1519 | { |
c5aa993b JM |
1520 | unsigned char val; |
1521 | int written = 0; | |
1522 | if (len == 0) | |
1523 | return 0; | |
c906108c | 1524 | /* Enter the sub mode */ |
c5aa993b JM |
1525 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
1526 | monitor_expect_prompt (NULL, 0); | |
c906108c SS |
1527 | while (len) |
1528 | { | |
c5aa993b JM |
1529 | val = *myaddr; |
1530 | monitor_printf ("%x\r", val); | |
1531 | myaddr++; | |
1532 | memaddr++; | |
1533 | written++; | |
c906108c | 1534 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1535 | monitor_expect_prompt (NULL, 0); |
1536 | len--; | |
c906108c SS |
1537 | } |
1538 | /* Now exit the sub mode */ | |
1539 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1540 | monitor_expect_prompt (NULL, 0); |
1541 | return written; | |
c906108c SS |
1542 | } |
1543 | ||
1544 | ||
1545 | static void | |
c5aa993b | 1546 | longlongendswap (unsigned char *a) |
c906108c | 1547 | { |
c5aa993b JM |
1548 | int i, j; |
1549 | unsigned char x; | |
1550 | i = 0; | |
1551 | j = 7; | |
c906108c | 1552 | while (i < 4) |
c5aa993b JM |
1553 | { |
1554 | x = *(a + i); | |
1555 | *(a + i) = *(a + j); | |
1556 | *(a + j) = x; | |
1557 | i++, j--; | |
c906108c SS |
1558 | } |
1559 | } | |
1560 | /* Format 32 chars of long long value, advance the pointer */ | |
c5aa993b JM |
1561 | static char *hexlate = "0123456789abcdef"; |
1562 | static char * | |
1563 | longlong_hexchars (unsigned long long value, | |
1564 | char *outbuff) | |
c906108c | 1565 | { |
c5aa993b JM |
1566 | if (value == 0) |
1567 | { | |
1568 | *outbuff++ = '0'; | |
1569 | return outbuff; | |
1570 | } | |
c906108c | 1571 | else |
c5aa993b JM |
1572 | { |
1573 | static unsigned char disbuf[8]; /* disassembly buffer */ | |
1574 | unsigned char *scan, *limit; /* loop controls */ | |
1575 | unsigned char c, nib; | |
1576 | int leadzero = 1; | |
1577 | scan = disbuf; | |
1578 | limit = scan + 8; | |
1579 | { | |
1580 | unsigned long long *dp; | |
1581 | dp = (unsigned long long *) scan; | |
1582 | *dp = value; | |
c906108c | 1583 | } |
c5aa993b | 1584 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */ |
c906108c | 1585 | while (scan < limit) |
7a292a7a | 1586 | { |
c5aa993b | 1587 | c = *scan++; /* a byte of our long long value */ |
c906108c | 1588 | if (leadzero) |
7a292a7a SS |
1589 | { |
1590 | if (c == 0) | |
1591 | continue; | |
1592 | else | |
c5aa993b | 1593 | leadzero = 0; /* henceforth we print even zeroes */ |
7a292a7a | 1594 | } |
c5aa993b | 1595 | nib = c >> 4; /* high nibble bits */ |
7a292a7a | 1596 | *outbuff++ = hexlate[nib]; |
c5aa993b | 1597 | nib = c & 0x0f; /* low nibble bits */ |
7a292a7a | 1598 | *outbuff++ = hexlate[nib]; |
c906108c | 1599 | } |
c5aa993b | 1600 | return outbuff; |
c906108c | 1601 | } |
c5aa993b | 1602 | } /* longlong_hexchars */ |
c906108c SS |
1603 | |
1604 | ||
1605 | ||
1606 | /* I am only going to call this when writing virtual byte streams. | |
1607 | Which possably entails endian conversions | |
c5aa993b JM |
1608 | */ |
1609 | static int | |
fba45db2 | 1610 | monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1611 | { |
c5aa993b JM |
1612 | static char hexstage[20]; /* At least 16 digits required, plus null */ |
1613 | char *endstring; | |
1614 | long long *llptr; | |
1615 | long long value; | |
1616 | int written = 0; | |
1617 | llptr = (unsigned long long *) myaddr; | |
1618 | if (len == 0) | |
1619 | return 0; | |
1620 | monitor_printf (current_monitor->setmem.cmdll, memaddr); | |
1621 | monitor_expect_prompt (NULL, 0); | |
1622 | while (len >= 8) | |
1623 | { | |
1624 | value = *llptr; | |
1625 | endstring = longlong_hexchars (*llptr, hexstage); | |
1626 | *endstring = '\0'; /* NUll terminate for printf */ | |
1627 | monitor_printf ("%s\r", hexstage); | |
1628 | llptr++; | |
1629 | memaddr += 8; | |
1630 | written += 8; | |
c906108c | 1631 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1632 | monitor_expect_prompt (NULL, 0); |
1633 | len -= 8; | |
c906108c SS |
1634 | } |
1635 | /* Now exit the sub mode */ | |
1636 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1637 | monitor_expect_prompt (NULL, 0); |
1638 | return written; | |
1639 | } /* */ | |
c906108c SS |
1640 | |
1641 | ||
1642 | ||
1643 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1644 | /* This is for the large blocks of memory which may occur in downloading. | |
1645 | And for monitors which use interactive entry, | |
1646 | And for monitors which do not have other downloading methods. | |
1647 | Without this, we will end up calling monitor_write_memory many times | |
1648 | and do the entry and exit of the sub mode many times | |
1649 | This currently assumes... | |
c5aa993b JM |
1650 | MO_SETMEM_INTERACTIVE |
1651 | ! MO_NO_ECHO_ON_SETMEM | |
1652 | To use this, the you have to patch the monitor_cmds block with | |
1653 | this function. Otherwise, its not tuned up for use by all | |
1654 | monitor variations. | |
1655 | */ | |
c906108c | 1656 | |
c5aa993b | 1657 | static int |
fba45db2 | 1658 | monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1659 | { |
c5aa993b JM |
1660 | int written; |
1661 | written = 0; | |
c906108c | 1662 | /* FIXME: This would be a good place to put the zero test */ |
c5aa993b | 1663 | #if 1 |
c906108c | 1664 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
c5aa993b JM |
1665 | { |
1666 | return monitor_write_memory_longlongs (memaddr, myaddr, len); | |
1667 | } | |
1668 | #endif | |
1669 | #if 0 | |
c906108c SS |
1670 | if (len > 4) |
1671 | { | |
c5aa993b JM |
1672 | int sublen; |
1673 | written = monitor_write_even_block (memaddr, myaddr, len); | |
c906108c | 1674 | /* Adjust calling parameters by written amount */ |
c5aa993b JM |
1675 | memaddr += written; |
1676 | myaddr += written; | |
1677 | len -= written; | |
c906108c SS |
1678 | } |
1679 | #endif | |
c5aa993b JM |
1680 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
1681 | return written; | |
c906108c SS |
1682 | } |
1683 | ||
1684 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1685 | which can only read a single byte/word/etc. at a time. */ | |
1686 | ||
1687 | static int | |
fba45db2 | 1688 | monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1689 | { |
1690 | unsigned int val; | |
c5aa993b | 1691 | char membuf[sizeof (int) * 2 + 1]; |
c906108c SS |
1692 | char *p; |
1693 | char *cmd; | |
c906108c | 1694 | |
2df3850c | 1695 | monitor_debug ("MON read single\n"); |
c906108c SS |
1696 | #if 0 |
1697 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1698 | call to strtoul below will fail if it tries to convert a value | |
1699 | that's too big to fit in a long. */ | |
1700 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1701 | { | |
1702 | len = 8; | |
1703 | cmd = current_monitor->getmem.cmdll; | |
1704 | } | |
1705 | else | |
1706 | #endif | |
1707 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1708 | { | |
1709 | len = 4; | |
1710 | cmd = current_monitor->getmem.cmdl; | |
1711 | } | |
1712 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1713 | { | |
1714 | len = 2; | |
1715 | cmd = current_monitor->getmem.cmdw; | |
1716 | } | |
1717 | else | |
1718 | { | |
1719 | len = 1; | |
1720 | cmd = current_monitor->getmem.cmdb; | |
1721 | } | |
1722 | ||
1723 | /* Send the examine command. */ | |
1724 | ||
1725 | monitor_printf (cmd, memaddr); | |
1726 | ||
1727 | /* If RESP_DELIM is specified, we search for that as a leading | |
1728 | delimiter for the memory value. Otherwise, we just start | |
1729 | searching from the start of the buf. */ | |
1730 | ||
1731 | if (current_monitor->getmem.resp_delim) | |
c5aa993b | 1732 | { |
2df3850c | 1733 | monitor_debug ("EXP getmem.resp_delim\n"); |
c906108c SS |
1734 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
1735 | } | |
1736 | ||
1737 | /* Now, read the appropriate number of hex digits for this loc, | |
1738 | skipping spaces. */ | |
1739 | ||
1740 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ | |
c5aa993b | 1741 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1742 | { |
1743 | int c; | |
1744 | ||
1745 | c = readchar (timeout); | |
1746 | while (c == ' ') | |
1747 | c = readchar (timeout); | |
1748 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1749 | ; | |
1750 | else | |
2df3850c JM |
1751 | monitor_error ("monitor_read_memory_single", |
1752 | "bad response from monitor", | |
93d56215 | 1753 | memaddr, 0, NULL, 0); |
c906108c | 1754 | } |
c906108c | 1755 | |
93d56215 AC |
1756 | { |
1757 | int i; | |
1758 | for (i = 0; i < len * 2; i++) | |
1759 | { | |
1760 | int c; | |
c906108c | 1761 | |
93d56215 AC |
1762 | while (1) |
1763 | { | |
1764 | c = readchar (timeout); | |
1765 | if (isxdigit (c)) | |
1766 | break; | |
1767 | if (c == ' ') | |
1768 | continue; | |
1769 | ||
1770 | monitor_error ("monitor_read_memory_single", | |
1771 | "bad response from monitor", | |
1772 | memaddr, i, membuf, 0); | |
1773 | } | |
c906108c SS |
1774 | membuf[i] = c; |
1775 | } | |
93d56215 AC |
1776 | membuf[i] = '\000'; /* terminate the number */ |
1777 | } | |
c906108c SS |
1778 | |
1779 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1780 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1781 | all of the output into buf, and then wait for the normal prompt. */ | |
1782 | ||
1783 | if (current_monitor->getmem.term) | |
1784 | { | |
c5aa993b | 1785 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ |
c906108c SS |
1786 | |
1787 | if (current_monitor->getmem.term_cmd) | |
1788 | { | |
1789 | monitor_printf (current_monitor->getmem.term_cmd); | |
1790 | monitor_expect_prompt (NULL, 0); | |
1791 | } | |
1792 | } | |
1793 | else | |
c5aa993b | 1794 | monitor_expect_prompt (NULL, 0); /* get response */ |
c906108c SS |
1795 | |
1796 | p = membuf; | |
1797 | val = strtoul (membuf, &p, 16); | |
1798 | ||
1799 | if (val == 0 && membuf == p) | |
2df3850c JM |
1800 | monitor_error ("monitor_read_memory_single", |
1801 | "bad value from monitor", | |
c906108c SS |
1802 | memaddr, 0, membuf, 0); |
1803 | ||
1804 | /* supply register stores in target byte order, so swap here */ | |
1805 | ||
1806 | store_unsigned_integer (myaddr, len, val); | |
1807 | ||
1808 | return len; | |
1809 | } | |
1810 | ||
1811 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1812 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1813 | than 16 bytes at a time. */ | |
1814 | ||
1815 | static int | |
fba45db2 | 1816 | monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1817 | { |
1818 | unsigned int val; | |
1819 | char buf[512]; | |
1820 | char *p, *p1; | |
1821 | int resp_len; | |
1822 | int i; | |
1823 | CORE_ADDR dumpaddr; | |
1824 | ||
1825 | if (len <= 0) | |
1826 | { | |
2df3850c | 1827 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
c906108c SS |
1828 | return 0; |
1829 | } | |
1830 | ||
2df3850c JM |
1831 | monitor_debug ("MON read block ta(%s) ha(%lx) %d\n", |
1832 | paddr_nz (memaddr), (long) myaddr, len); | |
c906108c SS |
1833 | |
1834 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
1835 | memaddr = ADDR_BITS_REMOVE (memaddr); | |
1836 | ||
1837 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1838 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1839 | ||
1840 | len = min (len, 16); | |
1841 | ||
1842 | /* Some dumpers align the first data with the preceeding 16 | |
1843 | byte boundary. Some print blanks and start at the | |
1844 | requested boundary. EXACT_DUMPADDR | |
c5aa993b | 1845 | */ |
c906108c SS |
1846 | |
1847 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
c5aa993b | 1848 | ? memaddr : memaddr & ~0x0f; |
c906108c SS |
1849 | |
1850 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1851 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1852 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1853 | ||
1854 | /* send the memory examine command */ | |
1855 | ||
1856 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1857 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1858 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1859 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1860 | else | |
1861 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1862 | ||
1863 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1864 | is present), we will send TERM_CMD if that is present. In any | |
1865 | case, we collect all of the output into buf, and then wait for | |
1866 | the normal prompt. */ | |
1867 | ||
1868 | if (current_monitor->getmem.term) | |
1869 | { | |
c5aa993b | 1870 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ |
c906108c SS |
1871 | |
1872 | if (resp_len <= 0) | |
2df3850c JM |
1873 | monitor_error ("monitor_read_memory", |
1874 | "excessive response from monitor", | |
c906108c SS |
1875 | memaddr, resp_len, buf, 0); |
1876 | ||
1877 | if (current_monitor->getmem.term_cmd) | |
1878 | { | |
1879 | SERIAL_WRITE (monitor_desc, current_monitor->getmem.term_cmd, | |
1880 | strlen (current_monitor->getmem.term_cmd)); | |
1881 | monitor_expect_prompt (NULL, 0); | |
1882 | } | |
1883 | } | |
1884 | else | |
c5aa993b | 1885 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ |
c906108c SS |
1886 | |
1887 | p = buf; | |
1888 | ||
1889 | /* If RESP_DELIM is specified, we search for that as a leading | |
1890 | delimiter for the values. Otherwise, we just start searching | |
1891 | from the start of the buf. */ | |
1892 | ||
1893 | if (current_monitor->getmem.resp_delim) | |
1894 | { | |
1895 | int retval, tmp; | |
1896 | struct re_registers resp_strings; | |
2df3850c | 1897 | monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim); |
c906108c SS |
1898 | |
1899 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1900 | tmp = strlen (p); | |
1901 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1902 | &resp_strings); | |
1903 | ||
1904 | if (retval < 0) | |
2df3850c JM |
1905 | monitor_error ("monitor_read_memory", |
1906 | "bad response from monitor", | |
c906108c SS |
1907 | memaddr, resp_len, buf, 0); |
1908 | ||
1909 | p += resp_strings.end[0]; | |
1910 | #if 0 | |
1911 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1912 | if (!p) | |
2df3850c JM |
1913 | monitor_error ("monitor_read_memory", |
1914 | "bad response from monitor", | |
c906108c SS |
1915 | memaddr, resp_len, buf, 0); |
1916 | p += strlen (current_monitor->getmem.resp_delim); | |
1917 | #endif | |
1918 | } | |
2df3850c | 1919 | monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p); |
c906108c SS |
1920 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1921 | { | |
c5aa993b JM |
1922 | char c; |
1923 | int fetched = 0; | |
c906108c | 1924 | i = len; |
c5aa993b | 1925 | c = *p; |
c906108c | 1926 | |
c5aa993b JM |
1927 | |
1928 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1929 | { | |
1930 | if (isxdigit (c)) | |
1931 | { | |
1932 | if ((dumpaddr >= memaddr) && (i > 0)) | |
1933 | { | |
1934 | val = fromhex (c) * 16 + fromhex (*(p + 1)); | |
c906108c | 1935 | *myaddr++ = val; |
2df3850c JM |
1936 | if (monitor_debug_p || remote_debug) |
1937 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); | |
c906108c | 1938 | --i; |
c5aa993b | 1939 | fetched++; |
c906108c SS |
1940 | } |
1941 | ++dumpaddr; | |
1942 | ++p; | |
1943 | } | |
c5aa993b JM |
1944 | ++p; /* skip a blank or other non hex char */ |
1945 | c = *p; | |
c906108c | 1946 | } |
c5aa993b JM |
1947 | if (fetched == 0) |
1948 | error ("Failed to read via monitor"); | |
2df3850c JM |
1949 | if (monitor_debug_p || remote_debug) |
1950 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
c5aa993b | 1951 | return fetched; /* Return the number of bytes actually read */ |
c906108c | 1952 | } |
2df3850c | 1953 | monitor_debug ("MON scanning bytes\n"); |
c906108c SS |
1954 | |
1955 | for (i = len; i > 0; i--) | |
1956 | { | |
1957 | /* Skip non-hex chars, but bomb on end of string and newlines */ | |
1958 | ||
1959 | while (1) | |
1960 | { | |
1961 | if (isxdigit (*p)) | |
1962 | break; | |
1963 | ||
1964 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
2df3850c JM |
1965 | monitor_error ("monitor_read_memory", |
1966 | "badly terminated response from monitor", | |
c906108c SS |
1967 | memaddr, resp_len, buf, 0); |
1968 | p++; | |
1969 | } | |
1970 | ||
1971 | val = strtoul (p, &p1, 16); | |
1972 | ||
1973 | if (val == 0 && p == p1) | |
2df3850c JM |
1974 | monitor_error ("monitor_read_memory", |
1975 | "bad value from monitor", | |
c906108c SS |
1976 | memaddr, resp_len, buf, 0); |
1977 | ||
1978 | *myaddr++ = val; | |
1979 | ||
1980 | if (i == 1) | |
1981 | break; | |
1982 | ||
1983 | p = p1; | |
1984 | } | |
1985 | ||
1986 | return len; | |
1987 | } | |
1988 | ||
0e7e8d51 KB |
1989 | /* Transfer LEN bytes between target address MEMADDR and GDB address |
1990 | MYADDR. Returns 0 for success, errno code for failure. TARGET is | |
1991 | unused. */ | |
1992 | ||
c906108c | 1993 | static int |
0e7e8d51 | 1994 | monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 C |
1995 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, |
1996 | struct target_ops *target ATTRIBUTE_UNUSED) | |
c906108c | 1997 | { |
4930751a C |
1998 | int res; |
1999 | ||
2000 | if (write) | |
2001 | { | |
2002 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
2003 | res = monitor_write_memory_block(memaddr, myaddr, len); | |
2004 | else | |
2005 | res = monitor_write_memory(memaddr, myaddr, len); | |
2006 | } | |
2007 | else | |
2008 | { | |
2009 | res = monitor_read_memory(memaddr, myaddr, len); | |
2010 | } | |
2011 | ||
2012 | return res; | |
c906108c SS |
2013 | } |
2014 | ||
2015 | static void | |
fba45db2 | 2016 | monitor_kill (void) |
c906108c | 2017 | { |
c5aa993b | 2018 | return; /* ignore attempts to kill target system */ |
c906108c SS |
2019 | } |
2020 | ||
2021 | /* All we actually do is set the PC to the start address of exec_bfd, and start | |
2022 | the program at that point. */ | |
2023 | ||
2024 | static void | |
fba45db2 | 2025 | monitor_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
2026 | { |
2027 | if (args && (*args != '\000')) | |
2028 | error ("Args are not supported by the monitor."); | |
2029 | ||
2030 | first_time = 1; | |
2031 | clear_proceed_status (); | |
2032 | proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0); | |
2033 | } | |
2034 | ||
2035 | /* Clean up when a program exits. | |
2036 | The program actually lives on in the remote processor's RAM, and may be | |
2037 | run again without a download. Don't leave it full of breakpoint | |
2038 | instructions. */ | |
2039 | ||
2040 | static void | |
fba45db2 | 2041 | monitor_mourn_inferior (void) |
c906108c SS |
2042 | { |
2043 | unpush_target (targ_ops); | |
2044 | generic_mourn_inferior (); /* Do all the proper things now */ | |
2045 | } | |
2046 | ||
c906108c SS |
2047 | /* Tell the monitor to add a breakpoint. */ |
2048 | ||
2049 | static int | |
fba45db2 | 2050 | monitor_insert_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
2051 | { |
2052 | int i; | |
2053 | unsigned char *bp; | |
2054 | int bplen; | |
2055 | ||
2df3850c JM |
2056 | monitor_debug ("MON inst bkpt %s\n", paddr (addr)); |
2057 | if (current_monitor->set_break == NULL) | |
c906108c SS |
2058 | error ("No set_break defined for this monitor"); |
2059 | ||
2060 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2061 | addr = ADDR_BITS_REMOVE (addr); | |
2062 | ||
2063 | /* Determine appropriate breakpoint size for this address. */ | |
2064 | bp = memory_breakpoint_from_pc (&addr, &bplen); | |
2065 | ||
9e086581 | 2066 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2067 | { |
2068 | if (breakaddr[i] == 0) | |
2069 | { | |
2070 | breakaddr[i] = addr; | |
2071 | monitor_read_memory (addr, shadow, bplen); | |
2072 | monitor_printf (current_monitor->set_break, addr); | |
2073 | monitor_expect_prompt (NULL, 0); | |
2074 | return 0; | |
2075 | } | |
2076 | } | |
2077 | ||
9e086581 | 2078 | error ("Too many breakpoints (> %d) for monitor.", current_monitor->num_breakpoints); |
c906108c SS |
2079 | } |
2080 | ||
2081 | /* Tell the monitor to remove a breakpoint. */ | |
2082 | ||
2083 | static int | |
fba45db2 | 2084 | monitor_remove_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
2085 | { |
2086 | int i; | |
2087 | ||
2df3850c JM |
2088 | monitor_debug ("MON rmbkpt %s\n", paddr (addr)); |
2089 | if (current_monitor->clr_break == NULL) | |
c906108c SS |
2090 | error ("No clr_break defined for this monitor"); |
2091 | ||
2092 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2093 | addr = ADDR_BITS_REMOVE (addr); | |
2094 | ||
9e086581 | 2095 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2096 | { |
2097 | if (breakaddr[i] == addr) | |
2098 | { | |
2099 | breakaddr[i] = 0; | |
2100 | /* some monitors remove breakpoints based on the address */ | |
2101 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) | |
2102 | monitor_printf (current_monitor->clr_break, addr); | |
2103 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2104 | monitor_printf (current_monitor->clr_break, i + 1); | |
2105 | else | |
2106 | monitor_printf (current_monitor->clr_break, i); | |
2107 | monitor_expect_prompt (NULL, 0); | |
2108 | return 0; | |
2109 | } | |
2110 | } | |
2111 | fprintf_unfiltered (gdb_stderr, | |
2df3850c JM |
2112 | "Can't find breakpoint associated with 0x%s\n", |
2113 | paddr_nz (addr)); | |
c906108c SS |
2114 | return 1; |
2115 | } | |
2116 | ||
2117 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2118 | an S-record. Return non-zero if the ACK is received properly. */ | |
2119 | ||
2120 | static int | |
fba45db2 | 2121 | monitor_wait_srec_ack (void) |
c906108c | 2122 | { |
d4f3574e | 2123 | int ch; |
c906108c SS |
2124 | |
2125 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2126 | { | |
2127 | return (readchar (timeout) == '+'); | |
2128 | } | |
2129 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2130 | { | |
2131 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2132 | if ((ch = readchar (1)) < 0) | |
2133 | return 0; | |
2134 | if ((ch = readchar (1)) < 0) | |
2135 | return 0; | |
2136 | if ((ch = readchar (1)) < 0) | |
2137 | return 0; | |
2138 | if ((ch = readchar (1)) < 0) | |
2139 | return 0; | |
2140 | } | |
2141 | return 1; | |
2142 | } | |
2143 | ||
2144 | /* monitor_load -- download a file. */ | |
2145 | ||
2146 | static void | |
fba45db2 | 2147 | monitor_load (char *file, int from_tty) |
c906108c | 2148 | { |
2df3850c | 2149 | monitor_debug ("MON load\n"); |
c906108c | 2150 | |
2df3850c | 2151 | if (current_monitor->load_routine) |
c906108c SS |
2152 | current_monitor->load_routine (monitor_desc, file, hashmark); |
2153 | else | |
2154 | { /* The default is ascii S-records */ | |
2155 | int n; | |
2156 | unsigned long load_offset; | |
2157 | char buf[128]; | |
2158 | ||
2159 | /* enable user to specify address for downloading as 2nd arg to load */ | |
2160 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); | |
2161 | if (n > 1) | |
2162 | file = buf; | |
2163 | else | |
2164 | load_offset = 0; | |
2165 | ||
2166 | monitor_printf (current_monitor->load); | |
2167 | if (current_monitor->loadresp) | |
2168 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
2169 | ||
2170 | load_srec (monitor_desc, file, (bfd_vma) load_offset, | |
2171 | 32, SREC_ALL, hashmark, | |
2172 | current_monitor->flags & MO_SREC_ACK ? | |
c5aa993b | 2173 | monitor_wait_srec_ack : NULL); |
c906108c SS |
2174 | |
2175 | monitor_expect_prompt (NULL, 0); | |
2176 | } | |
2177 | ||
2178 | /* Finally, make the PC point at the start address */ | |
2179 | ||
2180 | if (exec_bfd) | |
2181 | write_pc (bfd_get_start_address (exec_bfd)); | |
2182 | ||
39f77062 | 2183 | inferior_ptid = null_ptid ; /* No process now */ |
c906108c SS |
2184 | |
2185 | /* This is necessary because many things were based on the PC at the time that | |
2186 | we attached to the monitor, which is no longer valid now that we have loaded | |
2187 | new code (and just changed the PC). Another way to do this might be to call | |
2188 | normal_stop, except that the stack may not be valid, and things would get | |
2189 | horribly confused... */ | |
2190 | ||
2191 | clear_symtab_users (); | |
2192 | } | |
2193 | ||
2194 | static void | |
fba45db2 | 2195 | monitor_stop (void) |
c906108c | 2196 | { |
2df3850c | 2197 | monitor_debug ("MON stop\n"); |
c906108c SS |
2198 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
2199 | SERIAL_SEND_BREAK (monitor_desc); | |
2200 | if (current_monitor->stop) | |
2201 | monitor_printf_noecho (current_monitor->stop); | |
2202 | } | |
2203 | ||
96baa820 JM |
2204 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
2205 | in OUTPUT until the prompt is seen. FIXME: We read the characters | |
2206 | ourseleves here cause of a nasty echo. */ | |
c906108c SS |
2207 | |
2208 | static void | |
96baa820 | 2209 | monitor_rcmd (char *command, |
d9fcf2fb | 2210 | struct ui_file *outbuf) |
c906108c SS |
2211 | { |
2212 | char *p; | |
2213 | int resp_len; | |
2214 | char buf[1000]; | |
2215 | ||
2216 | if (monitor_desc == NULL) | |
2217 | error ("monitor target not open."); | |
2218 | ||
2219 | p = current_monitor->prompt; | |
2220 | ||
2221 | /* Send the command. Note that if no args were supplied, then we're | |
2222 | just sending the monitor a newline, which is sometimes useful. */ | |
2223 | ||
96baa820 | 2224 | monitor_printf ("%s\r", (command ? command : "")); |
c906108c SS |
2225 | |
2226 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2227 | ||
96baa820 | 2228 | fputs_unfiltered (buf, outbuf); /* Output the response */ |
c906108c SS |
2229 | } |
2230 | ||
2231 | /* Convert hex digit A to a number. */ | |
2232 | ||
2233 | #if 0 | |
2234 | static int | |
fba45db2 | 2235 | from_hex (int a) |
c5aa993b | 2236 | { |
c906108c SS |
2237 | if (a >= '0' && a <= '9') |
2238 | return a - '0'; | |
2239 | if (a >= 'a' && a <= 'f') | |
2240 | return a - 'a' + 10; | |
2241 | if (a >= 'A' && a <= 'F') | |
2242 | return a - 'A' + 10; | |
2243 | ||
2244 | error ("Reply contains invalid hex digit 0x%x", a); | |
2245 | } | |
2246 | #endif | |
2247 | ||
2248 | char * | |
fba45db2 | 2249 | monitor_get_dev_name (void) |
c906108c SS |
2250 | { |
2251 | return dev_name; | |
2252 | } | |
2253 | ||
2254 | static struct target_ops monitor_ops; | |
2255 | ||
2256 | static void | |
2257 | init_base_monitor_ops (void) | |
2258 | { | |
2259 | monitor_ops.to_shortname = NULL; | |
2260 | monitor_ops.to_longname = NULL; | |
2261 | monitor_ops.to_doc = NULL; | |
2262 | monitor_ops.to_open = NULL; | |
2263 | monitor_ops.to_close = monitor_close; | |
2264 | monitor_ops.to_attach = NULL; | |
2265 | monitor_ops.to_post_attach = NULL; | |
2266 | monitor_ops.to_require_attach = NULL; | |
2267 | monitor_ops.to_detach = monitor_detach; | |
2268 | monitor_ops.to_require_detach = NULL; | |
2269 | monitor_ops.to_resume = monitor_resume; | |
2270 | monitor_ops.to_wait = monitor_wait; | |
2271 | monitor_ops.to_post_wait = NULL; | |
2272 | monitor_ops.to_fetch_registers = monitor_fetch_registers; | |
2273 | monitor_ops.to_store_registers = monitor_store_registers; | |
2274 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
2275 | monitor_ops.to_xfer_memory = monitor_xfer_memory; | |
2276 | monitor_ops.to_files_info = monitor_files_info; | |
2277 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2278 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
2279 | monitor_ops.to_terminal_init = 0; | |
2280 | monitor_ops.to_terminal_inferior = 0; | |
2281 | monitor_ops.to_terminal_ours_for_output = 0; | |
2282 | monitor_ops.to_terminal_ours = 0; | |
2283 | monitor_ops.to_terminal_info = 0; | |
2284 | monitor_ops.to_kill = monitor_kill; | |
2285 | monitor_ops.to_load = monitor_load; | |
2286 | monitor_ops.to_lookup_symbol = 0; | |
2287 | monitor_ops.to_create_inferior = monitor_create_inferior; | |
2288 | monitor_ops.to_post_startup_inferior = NULL; | |
2289 | monitor_ops.to_acknowledge_created_inferior = NULL; | |
2290 | monitor_ops.to_clone_and_follow_inferior = NULL; | |
2291 | monitor_ops.to_post_follow_inferior_by_clone = NULL; | |
2292 | monitor_ops.to_insert_fork_catchpoint = NULL; | |
2293 | monitor_ops.to_remove_fork_catchpoint = NULL; | |
2294 | monitor_ops.to_insert_vfork_catchpoint = NULL; | |
2295 | monitor_ops.to_remove_vfork_catchpoint = NULL; | |
2296 | monitor_ops.to_has_forked = NULL; | |
2297 | monitor_ops.to_has_vforked = NULL; | |
2298 | monitor_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
2299 | monitor_ops.to_post_follow_vfork = NULL; | |
2300 | monitor_ops.to_insert_exec_catchpoint = NULL; | |
2301 | monitor_ops.to_remove_exec_catchpoint = NULL; | |
2302 | monitor_ops.to_has_execd = NULL; | |
2303 | monitor_ops.to_reported_exec_events_per_exec_call = NULL; | |
2304 | monitor_ops.to_has_exited = NULL; | |
2305 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; | |
2306 | monitor_ops.to_can_run = 0; | |
2307 | monitor_ops.to_notice_signals = 0; | |
2308 | monitor_ops.to_thread_alive = 0; | |
2309 | monitor_ops.to_stop = monitor_stop; | |
96baa820 | 2310 | monitor_ops.to_rcmd = monitor_rcmd; |
c906108c | 2311 | monitor_ops.to_pid_to_exec_file = NULL; |
c906108c SS |
2312 | monitor_ops.to_stratum = process_stratum; |
2313 | monitor_ops.DONT_USE = 0; | |
2314 | monitor_ops.to_has_all_memory = 1; | |
2315 | monitor_ops.to_has_memory = 1; | |
2316 | monitor_ops.to_has_stack = 1; | |
2317 | monitor_ops.to_has_registers = 1; | |
2318 | monitor_ops.to_has_execution = 1; | |
2319 | monitor_ops.to_sections = 0; | |
2320 | monitor_ops.to_sections_end = 0; | |
2321 | monitor_ops.to_magic = OPS_MAGIC; | |
c5aa993b | 2322 | } /* init_base_monitor_ops */ |
c906108c SS |
2323 | |
2324 | /* Init the target_ops structure pointed at by OPS */ | |
2325 | ||
2326 | void | |
fba45db2 | 2327 | init_monitor_ops (struct target_ops *ops) |
c906108c SS |
2328 | { |
2329 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2330 | init_base_monitor_ops (); | |
2331 | ||
2332 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2333 | } | |
2334 | ||
2335 | /* Define additional commands that are usually only used by monitors. */ | |
2336 | ||
2337 | void | |
fba45db2 | 2338 | _initialize_remote_monitors (void) |
c906108c SS |
2339 | { |
2340 | init_base_monitor_ops (); | |
2341 | add_show_from_set (add_set_cmd ("hash", no_class, var_boolean, | |
c5aa993b | 2342 | (char *) &hashmark, |
c906108c SS |
2343 | "Set display of activity while downloading a file.\n\ |
2344 | When enabled, a hashmark \'#\' is displayed.", | |
c5aa993b | 2345 | &setlist), |
c906108c | 2346 | &showlist); |
2df3850c | 2347 | |
2df3850c | 2348 | add_show_from_set |
5d161b24 | 2349 | (add_set_cmd ("monitor", no_class, var_zinteger, |
2df3850c JM |
2350 | (char *) &monitor_debug_p, |
2351 | "Set debugging of remote monitor communication.\n\ | |
2352 | When enabled, communication between GDB and the remote monitor\n\ | |
5d161b24 DB |
2353 | is displayed.", &setdebuglist), |
2354 | &showdebuglist); | |
c906108c | 2355 | } |