Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for boot monitors, for GDB. |
0a65a603 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
4 | 1999, 2000, 2001, 2002 Free Software Foundation, Inc. | |
5 | ||
c906108c SS |
6 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
7 | Resurrected from the ashes by Stu Grossman. | |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b JM |
21 | You should have received a copy of the GNU General Public License |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place - Suite 330, | |
24 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
25 | |
26 | /* This file was derived from various remote-* modules. It is a collection | |
27 | of generic support functions so GDB can talk directly to a ROM based | |
28 | monitor. This saves use from having to hack an exception based handler | |
8e1a459b | 29 | into existence, and makes for quick porting. |
c906108c SS |
30 | |
31 | This module talks to a debug monitor called 'MONITOR', which | |
32 | We communicate with MONITOR via either a direct serial line, or a TCP | |
33 | (or possibly TELNET) stream to a terminal multiplexor, | |
34 | which in turn talks to the target board. */ | |
35 | ||
36 | /* FIXME 32x64: This code assumes that registers and addresses are at | |
37 | most 32 bits long. If they can be larger, you will need to declare | |
38 | values as LONGEST and use %llx or some such to print values when | |
39 | building commands to send to the monitor. Since we don't know of | |
40 | any actual 64-bit targets with ROM monitors that use this code, | |
41 | it's not an issue right now. -sts 4/18/96 */ | |
42 | ||
43 | #include "defs.h" | |
44 | #include "gdbcore.h" | |
45 | #include "target.h" | |
60250e8b | 46 | #include "exceptions.h" |
c906108c SS |
47 | #include <signal.h> |
48 | #include <ctype.h> | |
49 | #include "gdb_string.h" | |
50 | #include <sys/types.h> | |
51 | #include "command.h" | |
52 | #include "serial.h" | |
53 | #include "monitor.h" | |
54 | #include "gdbcmd.h" | |
55 | #include "inferior.h" | |
88987551 | 56 | #include "gdb_regex.h" |
c906108c | 57 | #include "srec.h" |
4e052eda | 58 | #include "regcache.h" |
c906108c SS |
59 | |
60 | static char *dev_name; | |
61 | static struct target_ops *targ_ops; | |
62 | ||
a14ed312 | 63 | static void monitor_vsprintf (char *sndbuf, char *pattern, va_list args); |
c906108c | 64 | |
a14ed312 | 65 | static int readchar (int timeout); |
c906108c | 66 | |
a14ed312 KB |
67 | static void monitor_fetch_register (int regno); |
68 | static void monitor_store_register (int regno); | |
c906108c | 69 | |
2df3850c JM |
70 | static void monitor_printable_string (char *newstr, char *oldstr, int len); |
71 | static void monitor_error (char *function, char *message, CORE_ADDR memaddr, int len, char *string, int final_char); | |
a14ed312 | 72 | static void monitor_detach (char *args, int from_tty); |
39f77062 | 73 | static void monitor_resume (ptid_t ptid, int step, enum target_signal sig); |
a14ed312 KB |
74 | static void monitor_interrupt (int signo); |
75 | static void monitor_interrupt_twice (int signo); | |
76 | static void monitor_interrupt_query (void); | |
77 | static void monitor_wait_cleanup (void *old_timeout); | |
78 | ||
39f77062 | 79 | static ptid_t monitor_wait (ptid_t ptid, struct target_waitstatus *status); |
a14ed312 KB |
80 | static void monitor_fetch_registers (int regno); |
81 | static void monitor_store_registers (int regno); | |
82 | static void monitor_prepare_to_store (void); | |
83 | static int monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, | |
29e57380 C |
84 | int write, |
85 | struct mem_attrib *attrib, | |
86 | struct target_ops *target); | |
a14ed312 KB |
87 | static void monitor_files_info (struct target_ops *ops); |
88 | static int monitor_insert_breakpoint (CORE_ADDR addr, char *shadow); | |
89 | static int monitor_remove_breakpoint (CORE_ADDR addr, char *shadow); | |
90 | static void monitor_kill (void); | |
91 | static void monitor_load (char *file, int from_tty); | |
92 | static void monitor_mourn_inferior (void); | |
93 | static void monitor_stop (void); | |
94 | ||
95 | static int monitor_read_memory (CORE_ADDR addr, char *myaddr, int len); | |
96 | static int monitor_write_memory (CORE_ADDR addr, char *myaddr, int len); | |
97 | static int monitor_write_memory_bytes (CORE_ADDR addr, char *myaddr, int len); | |
98 | static int monitor_write_memory_block (CORE_ADDR memaddr, | |
99 | char *myaddr, int len); | |
100 | static int monitor_expect_regexp (struct re_pattern_buffer *pat, | |
101 | char *buf, int buflen); | |
102 | static void monitor_dump_regs (void); | |
c906108c | 103 | #if 0 |
a14ed312 KB |
104 | static int from_hex (int a); |
105 | static unsigned long get_hex_word (void); | |
c906108c | 106 | #endif |
a14ed312 | 107 | static void parse_register_dump (char *, int); |
c906108c SS |
108 | |
109 | static struct monitor_ops *current_monitor; | |
110 | ||
111 | static int hashmark; /* flag set by "set hash" */ | |
112 | ||
113 | static int timeout = 30; | |
114 | ||
115 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ | |
116 | ||
c5aa993b | 117 | static void (*ofunc) (); /* Old SIGINT signal handler */ |
c906108c | 118 | |
9e086581 JM |
119 | static CORE_ADDR *breakaddr; |
120 | ||
c906108c SS |
121 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
122 | that monitor_open knows that we don't have a file open when the | |
123 | program starts. */ | |
124 | ||
ba3a8523 | 125 | static struct serial *monitor_desc = NULL; |
c906108c SS |
126 | |
127 | /* Pointer to regexp pattern matching data */ | |
128 | ||
129 | static struct re_pattern_buffer register_pattern; | |
130 | static char register_fastmap[256]; | |
131 | ||
132 | static struct re_pattern_buffer getmem_resp_delim_pattern; | |
133 | static char getmem_resp_delim_fastmap[256]; | |
134 | ||
1456ad8e AC |
135 | static struct re_pattern_buffer setmem_resp_delim_pattern; |
136 | static char setmem_resp_delim_fastmap[256]; | |
137 | ||
138 | static struct re_pattern_buffer setreg_resp_delim_pattern; | |
139 | static char setreg_resp_delim_fastmap[256]; | |
140 | ||
c906108c SS |
141 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when |
142 | monitor_wait wakes up. */ | |
143 | ||
c5aa993b JM |
144 | static int first_time = 0; /* is this the first time we're executing after |
145 | gaving created the child proccess? */ | |
c906108c | 146 | |
d4f3574e SS |
147 | #define TARGET_BUF_SIZE 2048 |
148 | ||
2df3850c JM |
149 | /* Monitor specific debugging information. Typically only useful to |
150 | the developer of a new monitor interface. */ | |
c906108c | 151 | |
2df3850c JM |
152 | static void monitor_debug (const char *fmt, ...) ATTR_FORMAT(printf, 1, 2); |
153 | ||
154 | static int monitor_debug_p = 0; | |
155 | ||
156 | /* NOTE: This file alternates between monitor_debug_p and remote_debug | |
b2fa5097 | 157 | when determining if debug information is printed. Perhaps this |
2df3850c JM |
158 | could be simplified. */ |
159 | ||
160 | static void | |
161 | monitor_debug (const char *fmt, ...) | |
162 | { | |
163 | if (monitor_debug_p) | |
164 | { | |
165 | va_list args; | |
166 | va_start (args, fmt); | |
167 | vfprintf_filtered (gdb_stdlog, fmt, args); | |
168 | va_end (args); | |
169 | } | |
170 | } | |
171 | ||
172 | ||
173 | /* Convert a string into a printable representation, Return # byte in | |
174 | the new string. When LEN is >0 it specifies the size of the | |
175 | string. Otherwize strlen(oldstr) is used. */ | |
176 | ||
177 | static void | |
178 | monitor_printable_string (char *newstr, char *oldstr, int len) | |
c906108c | 179 | { |
c906108c | 180 | int ch; |
2df3850c JM |
181 | int i; |
182 | ||
183 | if (len <= 0) | |
184 | len = strlen (oldstr); | |
c906108c | 185 | |
2df3850c | 186 | for (i = 0; i < len; i++) |
c906108c | 187 | { |
2df3850c | 188 | ch = oldstr[i]; |
c906108c | 189 | switch (ch) |
c5aa993b | 190 | { |
c906108c SS |
191 | default: |
192 | if (isprint (ch)) | |
193 | *newstr++ = ch; | |
194 | ||
195 | else | |
196 | { | |
197 | sprintf (newstr, "\\x%02x", ch & 0xff); | |
198 | newstr += 4; | |
199 | } | |
200 | break; | |
201 | ||
c5aa993b JM |
202 | case '\\': |
203 | *newstr++ = '\\'; | |
204 | *newstr++ = '\\'; | |
205 | break; | |
206 | case '\b': | |
207 | *newstr++ = '\\'; | |
208 | *newstr++ = 'b'; | |
209 | break; | |
210 | case '\f': | |
211 | *newstr++ = '\\'; | |
212 | *newstr++ = 't'; | |
213 | break; | |
214 | case '\n': | |
215 | *newstr++ = '\\'; | |
216 | *newstr++ = 'n'; | |
217 | break; | |
218 | case '\r': | |
219 | *newstr++ = '\\'; | |
220 | *newstr++ = 'r'; | |
221 | break; | |
222 | case '\t': | |
223 | *newstr++ = '\\'; | |
224 | *newstr++ = 't'; | |
225 | break; | |
226 | case '\v': | |
227 | *newstr++ = '\\'; | |
228 | *newstr++ = 'v'; | |
229 | break; | |
230 | } | |
c906108c SS |
231 | } |
232 | ||
233 | *newstr++ = '\0'; | |
c906108c SS |
234 | } |
235 | ||
236 | /* Print monitor errors with a string, converting the string to printable | |
237 | representation. */ | |
238 | ||
239 | static void | |
2df3850c JM |
240 | monitor_error (char *function, char *message, |
241 | CORE_ADDR memaddr, int len, char *string, int final_char) | |
c906108c | 242 | { |
c5aa993b | 243 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
c906108c | 244 | char *safe_string = alloca ((real_len * 4) + 1); |
2df3850c | 245 | monitor_printable_string (safe_string, string, real_len); |
c906108c SS |
246 | |
247 | if (final_char) | |
8a3fe4f8 | 248 | error (_("%s (0x%s): %s: %s%c"), function, paddr_nz (memaddr), message, safe_string, final_char); |
c906108c | 249 | else |
8a3fe4f8 | 250 | error (_("%s (0x%s): %s: %s"), function, paddr_nz (memaddr), message, safe_string); |
c906108c SS |
251 | } |
252 | ||
253 | /* Convert hex digit A to a number. */ | |
254 | ||
255 | static int | |
fba45db2 | 256 | fromhex (int a) |
c906108c SS |
257 | { |
258 | if (a >= '0' && a <= '9') | |
259 | return a - '0'; | |
260 | else if (a >= 'a' && a <= 'f') | |
261 | return a - 'a' + 10; | |
c5aa993b JM |
262 | else if (a >= 'A' && a <= 'F') |
263 | return a - 'A' + 10; | |
c906108c | 264 | else |
8a3fe4f8 | 265 | error (_("Invalid hex digit %d"), a); |
c906108c SS |
266 | } |
267 | ||
268 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses | |
269 | ||
270 | This function exists to get around the problem that many host platforms | |
271 | don't have a printf that can print 64-bit addresses. The %A format | |
272 | specification is recognized as a special case, and causes the argument | |
273 | to be printed as a 64-bit hexadecimal address. | |
274 | ||
275 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. | |
276 | If it is a '%s' format, the argument is a string; otherwise the | |
277 | argument is assumed to be a long integer. | |
278 | ||
279 | %% is also turned into a single %. | |
c5aa993b JM |
280 | */ |
281 | ||
c906108c | 282 | static void |
fba45db2 | 283 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
c906108c SS |
284 | { |
285 | char format[10]; | |
286 | char fmt; | |
287 | char *p; | |
288 | int i; | |
289 | long arg_int; | |
290 | CORE_ADDR arg_addr; | |
291 | char *arg_string; | |
292 | ||
293 | for (p = pattern; *p; p++) | |
294 | { | |
295 | if (*p == '%') | |
296 | { | |
297 | /* Copy the format specifier to a separate buffer. */ | |
298 | format[0] = *p++; | |
299 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; | |
300 | i++, p++) | |
301 | format[i] = *p; | |
302 | format[i] = fmt = *p; | |
c5aa993b | 303 | format[i + 1] = '\0'; |
c906108c SS |
304 | |
305 | /* Fetch the next argument and print it. */ | |
306 | switch (fmt) | |
307 | { | |
308 | case '%': | |
309 | strcpy (sndbuf, "%"); | |
310 | break; | |
311 | case 'A': | |
312 | arg_addr = va_arg (args, CORE_ADDR); | |
313 | strcpy (sndbuf, paddr_nz (arg_addr)); | |
314 | break; | |
315 | case 's': | |
316 | arg_string = va_arg (args, char *); | |
317 | sprintf (sndbuf, format, arg_string); | |
318 | break; | |
319 | default: | |
320 | arg_int = va_arg (args, long); | |
321 | sprintf (sndbuf, format, arg_int); | |
322 | break; | |
323 | } | |
324 | sndbuf += strlen (sndbuf); | |
325 | } | |
326 | else | |
327 | *sndbuf++ = *p; | |
328 | } | |
329 | *sndbuf = '\0'; | |
330 | } | |
331 | ||
332 | ||
333 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. | |
334 | Works just like printf. */ | |
335 | ||
336 | void | |
c5aa993b | 337 | monitor_printf_noecho (char *pattern,...) |
c906108c SS |
338 | { |
339 | va_list args; | |
340 | char sndbuf[2000]; | |
341 | int len; | |
342 | ||
c906108c | 343 | va_start (args, pattern); |
c906108c SS |
344 | |
345 | monitor_vsprintf (sndbuf, pattern, args); | |
346 | ||
347 | len = strlen (sndbuf); | |
348 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 349 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 350 | |
2df3850c | 351 | if (monitor_debug_p) |
c906108c SS |
352 | { |
353 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); | |
2df3850c JM |
354 | monitor_printable_string (safe_string, sndbuf, 0); |
355 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c | 356 | } |
c5aa993b | 357 | |
c906108c SS |
358 | monitor_write (sndbuf, len); |
359 | } | |
360 | ||
361 | /* monitor_printf -- Send data to monitor and check the echo. Works just like | |
362 | printf. */ | |
363 | ||
364 | void | |
c5aa993b | 365 | monitor_printf (char *pattern,...) |
c906108c SS |
366 | { |
367 | va_list args; | |
368 | char sndbuf[2000]; | |
369 | int len; | |
370 | ||
c906108c | 371 | va_start (args, pattern); |
c906108c SS |
372 | |
373 | monitor_vsprintf (sndbuf, pattern, args); | |
374 | ||
375 | len = strlen (sndbuf); | |
376 | if (len + 1 > sizeof sndbuf) | |
e2e0b3e5 | 377 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c | 378 | |
2df3850c | 379 | if (monitor_debug_p) |
c906108c SS |
380 | { |
381 | char *safe_string = (char *) alloca ((len * 4) + 1); | |
2df3850c JM |
382 | monitor_printable_string (safe_string, sndbuf, 0); |
383 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); | |
c906108c SS |
384 | } |
385 | ||
386 | monitor_write (sndbuf, len); | |
387 | ||
388 | /* We used to expect that the next immediate output was the characters we | |
389 | just output, but sometimes some extra junk appeared before the characters | |
390 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. | |
391 | So, just start searching for what we sent, and skip anything unknown. */ | |
2df3850c JM |
392 | monitor_debug ("ExpectEcho\n"); |
393 | monitor_expect (sndbuf, (char *) 0, 0); | |
c906108c SS |
394 | } |
395 | ||
396 | ||
397 | /* Write characters to the remote system. */ | |
398 | ||
399 | void | |
fba45db2 | 400 | monitor_write (char *buf, int buflen) |
c906108c | 401 | { |
2cd58942 AC |
402 | if (serial_write (monitor_desc, buf, buflen)) |
403 | fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", | |
c906108c SS |
404 | safe_strerror (errno)); |
405 | } | |
406 | ||
407 | ||
408 | /* Read a binary character from the remote system, doing all the fancy | |
409 | timeout stuff, but without interpreting the character in any way, | |
410 | and without printing remote debug information. */ | |
411 | ||
412 | int | |
fba45db2 | 413 | monitor_readchar (void) |
c906108c SS |
414 | { |
415 | int c; | |
416 | int looping; | |
417 | ||
418 | do | |
419 | { | |
420 | looping = 0; | |
2cd58942 | 421 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
422 | |
423 | if (c >= 0) | |
c5aa993b | 424 | c &= 0xff; /* don't lose bit 7 */ |
c906108c SS |
425 | } |
426 | while (looping); | |
427 | ||
428 | if (c >= 0) | |
429 | return c; | |
430 | ||
431 | if (c == SERIAL_TIMEOUT) | |
8a3fe4f8 | 432 | error (_("Timeout reading from remote system.")); |
c906108c | 433 | |
e2e0b3e5 | 434 | perror_with_name (_("remote-monitor")); |
c906108c SS |
435 | } |
436 | ||
437 | ||
438 | /* Read a character from the remote system, doing all the fancy | |
439 | timeout stuff. */ | |
440 | ||
441 | static int | |
fba45db2 | 442 | readchar (int timeout) |
c906108c SS |
443 | { |
444 | int c; | |
c5aa993b JM |
445 | static enum |
446 | { | |
447 | last_random, last_nl, last_cr, last_crnl | |
448 | } | |
449 | state = last_random; | |
c906108c SS |
450 | int looping; |
451 | ||
452 | do | |
453 | { | |
454 | looping = 0; | |
2cd58942 | 455 | c = serial_readchar (monitor_desc, timeout); |
c906108c SS |
456 | |
457 | if (c >= 0) | |
458 | { | |
459 | c &= 0x7f; | |
c906108c SS |
460 | /* This seems to interfere with proper function of the |
461 | input stream */ | |
2df3850c | 462 | if (monitor_debug_p || remote_debug) |
c906108c SS |
463 | { |
464 | char buf[2]; | |
465 | buf[0] = c; | |
466 | buf[1] = '\0'; | |
467 | puts_debug ("read -->", buf, "<--"); | |
468 | } | |
c5aa993b | 469 | |
c906108c SS |
470 | } |
471 | ||
472 | /* Canonicialize \n\r combinations into one \r */ | |
473 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) | |
474 | { | |
475 | if ((c == '\r' && state == last_nl) | |
476 | || (c == '\n' && state == last_cr)) | |
477 | { | |
478 | state = last_crnl; | |
479 | looping = 1; | |
480 | } | |
481 | else if (c == '\r') | |
482 | state = last_cr; | |
483 | else if (c != '\n') | |
484 | state = last_random; | |
485 | else | |
486 | { | |
487 | state = last_nl; | |
488 | c = '\r'; | |
489 | } | |
490 | } | |
491 | } | |
492 | while (looping); | |
493 | ||
494 | if (c >= 0) | |
495 | return c; | |
496 | ||
497 | if (c == SERIAL_TIMEOUT) | |
7a292a7a | 498 | #if 0 |
c906108c SS |
499 | /* I fail to see how detaching here can be useful */ |
500 | if (in_monitor_wait) /* Watchdog went off */ | |
501 | { | |
502 | target_mourn_inferior (); | |
8a3fe4f8 | 503 | error (_("GDB serial timeout has expired. Target detached.")); |
c906108c SS |
504 | } |
505 | else | |
506 | #endif | |
8a3fe4f8 | 507 | error (_("Timeout reading from remote system.")); |
c906108c | 508 | |
e2e0b3e5 | 509 | perror_with_name (_("remote-monitor")); |
c906108c SS |
510 | } |
511 | ||
512 | /* Scan input from the remote system, until STRING is found. If BUF is non- | |
513 | zero, then collect input until we have collected either STRING or BUFLEN-1 | |
514 | chars. In either case we terminate BUF with a 0. If input overflows BUF | |
515 | because STRING can't be found, return -1, else return number of chars in BUF | |
516 | (minus the terminating NUL). Note that in the non-overflow case, STRING | |
517 | will be at the end of BUF. */ | |
518 | ||
519 | int | |
fba45db2 | 520 | monitor_expect (char *string, char *buf, int buflen) |
c906108c SS |
521 | { |
522 | char *p = string; | |
523 | int obuflen = buflen; | |
524 | int c; | |
c906108c | 525 | |
2df3850c | 526 | if (monitor_debug_p) |
c906108c SS |
527 | { |
528 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); | |
2df3850c JM |
529 | monitor_printable_string (safe_string, string, 0); |
530 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); | |
c906108c SS |
531 | } |
532 | ||
8edbea78 | 533 | immediate_quit++; |
c906108c SS |
534 | while (1) |
535 | { | |
536 | if (buf) | |
537 | { | |
538 | if (buflen < 2) | |
539 | { | |
540 | *buf = '\000'; | |
8edbea78 | 541 | immediate_quit--; |
c906108c SS |
542 | return -1; |
543 | } | |
544 | ||
545 | c = readchar (timeout); | |
546 | if (c == '\000') | |
547 | continue; | |
548 | *buf++ = c; | |
549 | buflen--; | |
550 | } | |
551 | else | |
552 | c = readchar (timeout); | |
553 | ||
554 | /* Don't expect any ^C sent to be echoed */ | |
c5aa993b | 555 | |
c906108c SS |
556 | if (*p == '\003' || c == *p) |
557 | { | |
558 | p++; | |
559 | if (*p == '\0') | |
560 | { | |
8edbea78 | 561 | immediate_quit--; |
c906108c SS |
562 | |
563 | if (buf) | |
564 | { | |
565 | *buf++ = '\000'; | |
566 | return obuflen - buflen; | |
567 | } | |
568 | else | |
569 | return 0; | |
570 | } | |
571 | } | |
c906108c SS |
572 | else |
573 | { | |
a0b3c4fd JM |
574 | /* We got a character that doesn't match the string. We need to |
575 | back up p, but how far? If we're looking for "..howdy" and the | |
576 | monitor sends "...howdy"? There's certainly a match in there, | |
577 | but when we receive the third ".", we won't find it if we just | |
578 | restart the matching at the beginning of the string. | |
579 | ||
580 | This is a Boyer-Moore kind of situation. We want to reset P to | |
581 | the end of the longest prefix of STRING that is a suffix of | |
582 | what we've read so far. In the example above, that would be | |
583 | ".." --- the longest prefix of "..howdy" that is a suffix of | |
584 | "...". This longest prefix could be the empty string, if C | |
585 | is nowhere to be found in STRING. | |
586 | ||
587 | If this longest prefix is not the empty string, it must contain | |
588 | C, so let's search from the end of STRING for instances of C, | |
589 | and see if the portion of STRING before that is a suffix of | |
590 | what we read before C. Actually, we can search backwards from | |
591 | p, since we know no prefix can be longer than that. | |
592 | ||
593 | Note that we can use STRING itself, along with C, as a record | |
594 | of what we've received so far. :) */ | |
595 | int i; | |
596 | ||
597 | for (i = (p - string) - 1; i >= 0; i--) | |
598 | if (string[i] == c) | |
599 | { | |
600 | /* Is this prefix a suffix of what we've read so far? | |
601 | In other words, does | |
602 | string[0 .. i-1] == string[p - i, p - 1]? */ | |
603 | if (! memcmp (string, p - i, i)) | |
604 | { | |
605 | p = string + i + 1; | |
606 | break; | |
607 | } | |
608 | } | |
609 | if (i < 0) | |
610 | p = string; | |
c906108c SS |
611 | } |
612 | } | |
613 | } | |
614 | ||
615 | /* Search for a regexp. */ | |
616 | ||
617 | static int | |
fba45db2 | 618 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
c906108c SS |
619 | { |
620 | char *mybuf; | |
621 | char *p; | |
2df3850c | 622 | monitor_debug ("MON Expecting regexp\n"); |
c906108c SS |
623 | if (buf) |
624 | mybuf = buf; | |
625 | else | |
626 | { | |
d4f3574e SS |
627 | mybuf = alloca (TARGET_BUF_SIZE); |
628 | buflen = TARGET_BUF_SIZE; | |
c906108c SS |
629 | } |
630 | ||
631 | p = mybuf; | |
632 | while (1) | |
633 | { | |
634 | int retval; | |
635 | ||
636 | if (p - mybuf >= buflen) | |
637 | { /* Buffer about to overflow */ | |
638 | ||
639 | /* On overflow, we copy the upper half of the buffer to the lower half. Not | |
640 | great, but it usually works... */ | |
641 | ||
642 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); | |
643 | p = mybuf + buflen / 2; | |
644 | } | |
645 | ||
646 | *p++ = readchar (timeout); | |
647 | ||
648 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); | |
649 | if (retval >= 0) | |
650 | return 1; | |
651 | } | |
652 | } | |
653 | ||
654 | /* Keep discarding input until we see the MONITOR prompt. | |
655 | ||
656 | The convention for dealing with the prompt is that you | |
657 | o give your command | |
658 | o *then* wait for the prompt. | |
659 | ||
660 | Thus the last thing that a procedure does with the serial line will | |
661 | be an monitor_expect_prompt(). Exception: monitor_resume does not | |
662 | wait for the prompt, because the terminal is being handed over to | |
663 | the inferior. However, the next thing which happens after that is | |
664 | a monitor_wait which does wait for the prompt. Note that this | |
665 | includes abnormal exit, e.g. error(). This is necessary to prevent | |
666 | getting into states from which we can't recover. */ | |
667 | ||
668 | int | |
fba45db2 | 669 | monitor_expect_prompt (char *buf, int buflen) |
c906108c | 670 | { |
2df3850c JM |
671 | monitor_debug ("MON Expecting prompt\n"); |
672 | return monitor_expect (current_monitor->prompt, buf, buflen); | |
c906108c SS |
673 | } |
674 | ||
675 | /* Get N 32-bit words from remote, each preceded by a space, and put | |
676 | them in registers starting at REGNO. */ | |
677 | ||
678 | #if 0 | |
679 | static unsigned long | |
fba45db2 | 680 | get_hex_word (void) |
c906108c SS |
681 | { |
682 | unsigned long val; | |
683 | int i; | |
684 | int ch; | |
685 | ||
686 | do | |
687 | ch = readchar (timeout); | |
c5aa993b | 688 | while (isspace (ch)); |
c906108c SS |
689 | |
690 | val = from_hex (ch); | |
691 | ||
692 | for (i = 7; i >= 1; i--) | |
693 | { | |
694 | ch = readchar (timeout); | |
695 | if (!isxdigit (ch)) | |
696 | break; | |
697 | val = (val << 4) | from_hex (ch); | |
698 | } | |
699 | ||
700 | return val; | |
701 | } | |
702 | #endif | |
703 | ||
704 | static void | |
fba45db2 KB |
705 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
706 | char *fastmap) | |
c906108c SS |
707 | { |
708 | int tmp; | |
709 | const char *val; | |
710 | ||
711 | compiled_pattern->fastmap = fastmap; | |
712 | ||
713 | tmp = re_set_syntax (RE_SYNTAX_EMACS); | |
714 | val = re_compile_pattern (pattern, | |
715 | strlen (pattern), | |
716 | compiled_pattern); | |
717 | re_set_syntax (tmp); | |
718 | ||
719 | if (val) | |
8a3fe4f8 | 720 | error (_("compile_pattern: Can't compile pattern string `%s': %s!"), pattern, val); |
c906108c SS |
721 | |
722 | if (fastmap) | |
723 | re_compile_fastmap (compiled_pattern); | |
724 | } | |
725 | ||
726 | /* Open a connection to a remote debugger. NAME is the filename used | |
727 | for communication. */ | |
728 | ||
729 | void | |
fba45db2 | 730 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
c906108c SS |
731 | { |
732 | char *name; | |
733 | char **p; | |
734 | ||
735 | if (mon_ops->magic != MONITOR_OPS_MAGIC) | |
8a3fe4f8 | 736 | error (_("Magic number of monitor_ops struct wrong.")); |
c906108c SS |
737 | |
738 | targ_ops = mon_ops->target; | |
739 | name = targ_ops->to_shortname; | |
740 | ||
741 | if (!args) | |
8a3fe4f8 AC |
742 | error (_("Use `target %s DEVICE-NAME' to use a serial port, or \n\ |
743 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name); | |
c906108c SS |
744 | |
745 | target_preopen (from_tty); | |
746 | ||
747 | /* Setup pattern for register dump */ | |
748 | ||
749 | if (mon_ops->register_pattern) | |
750 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, | |
751 | register_fastmap); | |
752 | ||
753 | if (mon_ops->getmem.resp_delim) | |
754 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, | |
755 | getmem_resp_delim_fastmap); | |
756 | ||
1456ad8e AC |
757 | if (mon_ops->setmem.resp_delim) |
758 | compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern, | |
759 | setmem_resp_delim_fastmap); | |
760 | ||
761 | if (mon_ops->setreg.resp_delim) | |
762 | compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern, | |
763 | setreg_resp_delim_fastmap); | |
764 | ||
c906108c SS |
765 | unpush_target (targ_ops); |
766 | ||
767 | if (dev_name) | |
b8c9b27d | 768 | xfree (dev_name); |
4fcf66da | 769 | dev_name = xstrdup (args); |
c906108c | 770 | |
2cd58942 | 771 | monitor_desc = serial_open (dev_name); |
c906108c SS |
772 | |
773 | if (!monitor_desc) | |
774 | perror_with_name (dev_name); | |
775 | ||
776 | if (baud_rate != -1) | |
777 | { | |
2cd58942 | 778 | if (serial_setbaudrate (monitor_desc, baud_rate)) |
c906108c | 779 | { |
2cd58942 | 780 | serial_close (monitor_desc); |
c906108c SS |
781 | perror_with_name (dev_name); |
782 | } | |
783 | } | |
c5aa993b | 784 | |
2cd58942 | 785 | serial_raw (monitor_desc); |
c906108c | 786 | |
2cd58942 | 787 | serial_flush_input (monitor_desc); |
c906108c SS |
788 | |
789 | /* some systems only work with 2 stop bits */ | |
790 | ||
2cd58942 | 791 | serial_setstopbits (monitor_desc, mon_ops->stopbits); |
c906108c SS |
792 | |
793 | current_monitor = mon_ops; | |
794 | ||
795 | /* See if we can wake up the monitor. First, try sending a stop sequence, | |
796 | then send the init strings. Last, remove all breakpoints. */ | |
797 | ||
798 | if (current_monitor->stop) | |
799 | { | |
800 | monitor_stop (); | |
801 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) | |
c5aa993b | 802 | { |
2df3850c | 803 | monitor_debug ("EXP Open echo\n"); |
c5aa993b JM |
804 | monitor_expect_prompt (NULL, 0); |
805 | } | |
c906108c SS |
806 | } |
807 | ||
808 | /* wake up the monitor and see if it's alive */ | |
809 | for (p = mon_ops->init; *p != NULL; p++) | |
810 | { | |
811 | /* Some of the characters we send may not be echoed, | |
c5aa993b JM |
812 | but we hope to get a prompt at the end of it all. */ |
813 | ||
c906108c | 814 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
c5aa993b | 815 | monitor_printf (*p); |
c906108c | 816 | else |
c5aa993b | 817 | monitor_printf_noecho (*p); |
c906108c SS |
818 | monitor_expect_prompt (NULL, 0); |
819 | } | |
820 | ||
2cd58942 | 821 | serial_flush_input (monitor_desc); |
c906108c | 822 | |
9e086581 JM |
823 | /* Alloc breakpoints */ |
824 | if (mon_ops->set_break != NULL) | |
825 | { | |
826 | if (mon_ops->num_breakpoints == 0) | |
827 | mon_ops->num_breakpoints = 8; | |
828 | ||
829 | breakaddr = (CORE_ADDR *) xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
830 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); | |
831 | } | |
832 | ||
c906108c SS |
833 | /* Remove all breakpoints */ |
834 | ||
835 | if (mon_ops->clr_all_break) | |
836 | { | |
837 | monitor_printf (mon_ops->clr_all_break); | |
838 | monitor_expect_prompt (NULL, 0); | |
839 | } | |
840 | ||
841 | if (from_tty) | |
a3f17187 | 842 | printf_unfiltered (_("Remote target %s connected to %s\n"), name, dev_name); |
c906108c SS |
843 | |
844 | push_target (targ_ops); | |
845 | ||
39f77062 | 846 | inferior_ptid = pid_to_ptid (42000); /* Make run command think we are busy... */ |
c906108c SS |
847 | |
848 | /* Give monitor_wait something to read */ | |
849 | ||
850 | monitor_printf (current_monitor->line_term); | |
851 | ||
c906108c SS |
852 | start_remote (); |
853 | } | |
854 | ||
855 | /* Close out all files and local state before this target loses | |
856 | control. */ | |
857 | ||
858 | void | |
fba45db2 | 859 | monitor_close (int quitting) |
c906108c SS |
860 | { |
861 | if (monitor_desc) | |
2cd58942 | 862 | serial_close (monitor_desc); |
9e086581 JM |
863 | |
864 | /* Free breakpoint memory */ | |
865 | if (breakaddr != NULL) | |
866 | { | |
b8c9b27d | 867 | xfree (breakaddr); |
9e086581 JM |
868 | breakaddr = NULL; |
869 | } | |
870 | ||
c906108c SS |
871 | monitor_desc = NULL; |
872 | } | |
873 | ||
874 | /* Terminate the open connection to the remote debugger. Use this | |
875 | when you want to detach and do something else with your gdb. */ | |
876 | ||
877 | static void | |
fba45db2 | 878 | monitor_detach (char *args, int from_tty) |
c906108c SS |
879 | { |
880 | pop_target (); /* calls monitor_close to do the real work */ | |
881 | if (from_tty) | |
a3f17187 | 882 | printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname); |
c906108c SS |
883 | } |
884 | ||
885 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ | |
886 | ||
887 | char * | |
fba45db2 | 888 | monitor_supply_register (int regno, char *valstr) |
c906108c | 889 | { |
d4f3574e | 890 | ULONGEST val; |
123a958e | 891 | unsigned char regbuf[MAX_REGISTER_SIZE]; |
c906108c SS |
892 | char *p; |
893 | ||
4ce44c66 | 894 | val = 0; |
d4f3574e SS |
895 | p = valstr; |
896 | while (p && *p != '\0') | |
897 | { | |
898 | if (*p == '\r' || *p == '\n') | |
899 | { | |
900 | while (*p != '\0') | |
901 | p++; | |
902 | break; | |
903 | } | |
904 | if (isspace (*p)) | |
905 | { | |
906 | p++; | |
907 | continue; | |
908 | } | |
909 | if (!isxdigit (*p) && *p != 'x') | |
910 | { | |
911 | break; | |
912 | } | |
913 | ||
914 | val <<= 4; | |
915 | val += fromhex (*p++); | |
916 | } | |
2df3850c | 917 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
c906108c | 918 | |
1fcef334 | 919 | if (val == 0 && valstr == p) |
8a3fe4f8 | 920 | error (_("monitor_supply_register (%d): bad value from monitor: %s."), |
c906108c SS |
921 | regno, valstr); |
922 | ||
923 | /* supply register stores in target byte order, so swap here */ | |
924 | ||
3acba339 | 925 | store_unsigned_integer (regbuf, register_size (current_gdbarch, regno), val); |
c906108c | 926 | |
23a6d369 | 927 | regcache_raw_supply (current_regcache, regno, regbuf); |
c906108c SS |
928 | |
929 | return p; | |
930 | } | |
931 | ||
932 | /* Tell the remote machine to resume. */ | |
933 | ||
c906108c | 934 | static void |
39f77062 | 935 | monitor_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c SS |
936 | { |
937 | /* Some monitors require a different command when starting a program */ | |
2df3850c | 938 | monitor_debug ("MON resume\n"); |
c906108c SS |
939 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
940 | { | |
941 | first_time = 0; | |
942 | monitor_printf ("run\r"); | |
943 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) | |
c5aa993b | 944 | dump_reg_flag = 1; |
c906108c SS |
945 | return; |
946 | } | |
c906108c SS |
947 | if (step) |
948 | monitor_printf (current_monitor->step); | |
949 | else | |
950 | { | |
951 | if (current_monitor->continue_hook) | |
c5aa993b JM |
952 | (*current_monitor->continue_hook) (); |
953 | else | |
954 | monitor_printf (current_monitor->cont); | |
c906108c SS |
955 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
956 | dump_reg_flag = 1; | |
957 | } | |
958 | } | |
959 | ||
960 | /* Parse the output of a register dump command. A monitor specific | |
961 | regexp is used to extract individual register descriptions of the | |
962 | form REG=VAL. Each description is split up into a name and a value | |
963 | string which are passed down to monitor specific code. */ | |
964 | ||
965 | static void | |
fba45db2 | 966 | parse_register_dump (char *buf, int len) |
c906108c | 967 | { |
2df3850c JM |
968 | monitor_debug ("MON Parsing register dump\n"); |
969 | while (1) | |
c906108c SS |
970 | { |
971 | int regnamelen, vallen; | |
972 | char *regname, *val; | |
973 | /* Element 0 points to start of register name, and element 1 | |
c5aa993b | 974 | points to the start of the register value. */ |
c906108c SS |
975 | struct re_registers register_strings; |
976 | ||
977 | memset (®ister_strings, 0, sizeof (struct re_registers)); | |
978 | ||
979 | if (re_search (®ister_pattern, buf, len, 0, len, | |
980 | ®ister_strings) == -1) | |
981 | break; | |
982 | ||
983 | regnamelen = register_strings.end[1] - register_strings.start[1]; | |
984 | regname = buf + register_strings.start[1]; | |
985 | vallen = register_strings.end[2] - register_strings.start[2]; | |
986 | val = buf + register_strings.start[2]; | |
987 | ||
988 | current_monitor->supply_register (regname, regnamelen, val, vallen); | |
989 | ||
990 | buf += register_strings.end[0]; | |
991 | len -= register_strings.end[0]; | |
992 | } | |
993 | } | |
994 | ||
995 | /* Send ^C to target to halt it. Target will respond, and send us a | |
996 | packet. */ | |
997 | ||
998 | static void | |
fba45db2 | 999 | monitor_interrupt (int signo) |
c906108c SS |
1000 | { |
1001 | /* If this doesn't work, try more severe steps. */ | |
1002 | signal (signo, monitor_interrupt_twice); | |
c5aa993b | 1003 | |
2df3850c JM |
1004 | if (monitor_debug_p || remote_debug) |
1005 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); | |
c906108c SS |
1006 | |
1007 | target_stop (); | |
1008 | } | |
1009 | ||
1010 | /* The user typed ^C twice. */ | |
1011 | ||
1012 | static void | |
fba45db2 | 1013 | monitor_interrupt_twice (int signo) |
c906108c SS |
1014 | { |
1015 | signal (signo, ofunc); | |
c5aa993b | 1016 | |
c906108c SS |
1017 | monitor_interrupt_query (); |
1018 | ||
1019 | signal (signo, monitor_interrupt); | |
1020 | } | |
1021 | ||
1022 | /* Ask the user what to do when an interrupt is received. */ | |
1023 | ||
1024 | static void | |
fba45db2 | 1025 | monitor_interrupt_query (void) |
c906108c SS |
1026 | { |
1027 | target_terminal_ours (); | |
1028 | ||
1029 | if (query ("Interrupted while waiting for the program.\n\ | |
1030 | Give up (and stop debugging it)? ")) | |
1031 | { | |
1032 | target_mourn_inferior (); | |
315a522e | 1033 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
1034 | } |
1035 | ||
1036 | target_terminal_inferior (); | |
1037 | } | |
1038 | ||
1039 | static void | |
fba45db2 | 1040 | monitor_wait_cleanup (void *old_timeout) |
c906108c | 1041 | { |
c5aa993b | 1042 | timeout = *(int *) old_timeout; |
c906108c SS |
1043 | signal (SIGINT, ofunc); |
1044 | in_monitor_wait = 0; | |
1045 | } | |
1046 | ||
1047 | ||
1048 | ||
a78f21af | 1049 | static void |
c5aa993b JM |
1050 | monitor_wait_filter (char *buf, |
1051 | int bufmax, | |
1052 | int *ext_resp_len, | |
a78f21af | 1053 | struct target_waitstatus *status) |
c906108c | 1054 | { |
c5aa993b | 1055 | int resp_len; |
c906108c SS |
1056 | do |
1057 | { | |
1058 | resp_len = monitor_expect_prompt (buf, bufmax); | |
c5aa993b | 1059 | *ext_resp_len = resp_len; |
c906108c SS |
1060 | |
1061 | if (resp_len <= 0) | |
1062 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1063 | } | |
1064 | while (resp_len < 0); | |
1065 | ||
1066 | /* Print any output characters that were preceded by ^O. */ | |
1067 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1068 | if (monitor_debug_p || remote_debug |
1069 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1070 | { |
1071 | int i; | |
1072 | ||
1073 | for (i = 0; i < resp_len - 1; i++) | |
1074 | if (buf[i] == 0x0f) | |
1075 | putchar_unfiltered (buf[++i]); | |
1076 | } | |
1077 | } | |
1078 | ||
1079 | ||
1080 | ||
1081 | /* Wait until the remote machine stops, then return, storing status in | |
1082 | status just as `wait' would. */ | |
1083 | ||
39f77062 KB |
1084 | static ptid_t |
1085 | monitor_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c SS |
1086 | { |
1087 | int old_timeout = timeout; | |
d4f3574e | 1088 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1089 | int resp_len; |
1090 | struct cleanup *old_chain; | |
1091 | ||
1092 | status->kind = TARGET_WAITKIND_EXITED; | |
1093 | status->value.integer = 0; | |
1094 | ||
1095 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); | |
2df3850c | 1096 | monitor_debug ("MON wait\n"); |
c906108c | 1097 | |
7a292a7a | 1098 | #if 0 |
c5aa993b JM |
1099 | /* This is somthing other than a maintenance command */ |
1100 | in_monitor_wait = 1; | |
c906108c SS |
1101 | timeout = watchdog > 0 ? watchdog : -1; |
1102 | #else | |
2df3850c | 1103 | timeout = -1; /* Don't time out -- user program is running. */ |
c906108c SS |
1104 | #endif |
1105 | ||
1106 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); | |
1107 | ||
1108 | if (current_monitor->wait_filter) | |
c5aa993b JM |
1109 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
1110 | else | |
1111 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); | |
1112 | ||
1113 | #if 0 /* Transferred to monitor wait filter */ | |
c906108c SS |
1114 | do |
1115 | { | |
1116 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1117 | ||
1118 | if (resp_len <= 0) | |
1119 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); | |
1120 | } | |
1121 | while (resp_len < 0); | |
1122 | ||
1123 | /* Print any output characters that were preceded by ^O. */ | |
1124 | /* FIXME - This would be great as a user settabgle flag */ | |
2df3850c JM |
1125 | if (monitor_debug_p || remote_debug |
1126 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) | |
c906108c SS |
1127 | { |
1128 | int i; | |
1129 | ||
1130 | for (i = 0; i < resp_len - 1; i++) | |
1131 | if (buf[i] == 0x0f) | |
1132 | putchar_unfiltered (buf[++i]); | |
1133 | } | |
c5aa993b | 1134 | #endif |
c906108c SS |
1135 | |
1136 | signal (SIGINT, ofunc); | |
1137 | ||
1138 | timeout = old_timeout; | |
1139 | #if 0 | |
1140 | if (dump_reg_flag && current_monitor->dump_registers) | |
1141 | { | |
1142 | dump_reg_flag = 0; | |
1143 | monitor_printf (current_monitor->dump_registers); | |
1144 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1145 | } | |
1146 | ||
1147 | if (current_monitor->register_pattern) | |
1148 | parse_register_dump (buf, resp_len); | |
1149 | #else | |
2df3850c | 1150 | monitor_debug ("Wait fetching registers after stop\n"); |
c5aa993b JM |
1151 | monitor_dump_regs (); |
1152 | #endif | |
c906108c SS |
1153 | |
1154 | status->kind = TARGET_WAITKIND_STOPPED; | |
1155 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1156 | ||
1157 | discard_cleanups (old_chain); | |
1158 | ||
1159 | in_monitor_wait = 0; | |
1160 | ||
39f77062 | 1161 | return inferior_ptid; |
c906108c SS |
1162 | } |
1163 | ||
1164 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns | |
1165 | errno value. */ | |
1166 | ||
1167 | static void | |
fba45db2 | 1168 | monitor_fetch_register (int regno) |
c906108c | 1169 | { |
444199e7 | 1170 | const char *name; |
86110418 MS |
1171 | char *zerobuf; |
1172 | char *regbuf; | |
c906108c SS |
1173 | int i; |
1174 | ||
d9d9c31f AC |
1175 | regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1); |
1176 | zerobuf = alloca (MAX_REGISTER_SIZE); | |
1177 | memset (zerobuf, 0, MAX_REGISTER_SIZE); | |
86110418 | 1178 | |
1c617db8 GS |
1179 | if (current_monitor->regname != NULL) |
1180 | name = current_monitor->regname (regno); | |
1181 | else | |
1182 | name = current_monitor->regnames[regno]; | |
2df3850c | 1183 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
c906108c | 1184 | |
2df3850c | 1185 | if (!name || (*name == '\0')) |
7a292a7a | 1186 | { |
2df3850c | 1187 | monitor_debug ("No register known for %d\n", regno); |
23a6d369 | 1188 | regcache_raw_supply (current_regcache, regno, zerobuf); |
c906108c SS |
1189 | return; |
1190 | } | |
1191 | ||
1192 | /* send the register examine command */ | |
1193 | ||
1194 | monitor_printf (current_monitor->getreg.cmd, name); | |
1195 | ||
1196 | /* If RESP_DELIM is specified, we search for that as a leading | |
1197 | delimiter for the register value. Otherwise, we just start | |
1198 | searching from the start of the buf. */ | |
1199 | ||
1200 | if (current_monitor->getreg.resp_delim) | |
1201 | { | |
2df3850c JM |
1202 | monitor_debug ("EXP getreg.resp_delim\n"); |
1203 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); | |
c906108c SS |
1204 | /* Handle case of first 32 registers listed in pairs. */ |
1205 | if (current_monitor->flags & MO_32_REGS_PAIRED | |
7a292a7a | 1206 | && (regno & 1) != 0 && regno < 32) |
c5aa993b | 1207 | { |
2df3850c | 1208 | monitor_debug ("EXP getreg.resp_delim\n"); |
c906108c SS |
1209 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
1210 | } | |
1211 | } | |
1212 | ||
1213 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ | |
c5aa993b | 1214 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1215 | { |
1216 | int c; | |
1217 | c = readchar (timeout); | |
1218 | while (c == ' ') | |
1219 | c = readchar (timeout); | |
1220 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1221 | ; | |
1222 | else | |
8a3fe4f8 | 1223 | error (_("Bad value returned from monitor while fetching register %x."), |
c5aa993b | 1224 | regno); |
c906108c SS |
1225 | } |
1226 | ||
1227 | /* Read upto the maximum number of hex digits for this register, skipping | |
1228 | spaces, but stop reading if something else is seen. Some monitors | |
1229 | like to drop leading zeros. */ | |
1230 | ||
3acba339 | 1231 | for (i = 0; i < register_size (current_gdbarch, regno) * 2; i++) |
c906108c SS |
1232 | { |
1233 | int c; | |
1234 | c = readchar (timeout); | |
1235 | while (c == ' ') | |
1236 | c = readchar (timeout); | |
1237 | ||
1238 | if (!isxdigit (c)) | |
1239 | break; | |
1240 | ||
1241 | regbuf[i] = c; | |
1242 | } | |
1243 | ||
1244 | regbuf[i] = '\000'; /* terminate the number */ | |
2df3850c | 1245 | monitor_debug ("REGVAL '%s'\n", regbuf); |
c906108c SS |
1246 | |
1247 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1248 | is present), we will send TERM_CMD if that is present. In any | |
1249 | case, we collect all of the output into buf, and then wait for | |
1250 | the normal prompt. */ | |
1251 | ||
1252 | if (current_monitor->getreg.term) | |
1253 | { | |
2df3850c JM |
1254 | monitor_debug ("EXP getreg.term\n"); |
1255 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ | |
c906108c SS |
1256 | } |
1257 | ||
1258 | if (current_monitor->getreg.term_cmd) | |
c5aa993b | 1259 | { |
2df3850c JM |
1260 | monitor_debug ("EMIT getreg.term.cmd\n"); |
1261 | monitor_printf (current_monitor->getreg.term_cmd); | |
c906108c | 1262 | } |
c5aa993b JM |
1263 | if (!current_monitor->getreg.term || /* Already expected or */ |
1264 | current_monitor->getreg.term_cmd) /* ack expected */ | |
1265 | monitor_expect_prompt (NULL, 0); /* get response */ | |
c906108c SS |
1266 | |
1267 | monitor_supply_register (regno, regbuf); | |
1268 | } | |
1269 | ||
1270 | /* Sometimes, it takes several commands to dump the registers */ | |
1271 | /* This is a primitive for use by variations of monitor interfaces in | |
1272 | case they need to compose the operation. | |
c5aa993b JM |
1273 | */ |
1274 | int | |
1275 | monitor_dump_reg_block (char *block_cmd) | |
c906108c | 1276 | { |
d4f3574e | 1277 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1278 | int resp_len; |
1279 | monitor_printf (block_cmd); | |
1280 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); | |
1281 | parse_register_dump (buf, resp_len); | |
c5aa993b | 1282 | return 1; |
c906108c SS |
1283 | } |
1284 | ||
1285 | ||
1286 | /* Read the remote registers into the block regs. */ | |
1287 | /* Call the specific function if it has been provided */ | |
1288 | ||
1289 | static void | |
fba45db2 | 1290 | monitor_dump_regs (void) |
c906108c | 1291 | { |
d4f3574e | 1292 | char buf[TARGET_BUF_SIZE]; |
c906108c SS |
1293 | int resp_len; |
1294 | if (current_monitor->dumpregs) | |
c5aa993b JM |
1295 | (*(current_monitor->dumpregs)) (); /* call supplied function */ |
1296 | else if (current_monitor->dump_registers) /* default version */ | |
1297 | { | |
1298 | monitor_printf (current_monitor->dump_registers); | |
c906108c SS |
1299 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
1300 | parse_register_dump (buf, resp_len); | |
1301 | } | |
1302 | else | |
e2e0b3e5 | 1303 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); /* Need some way to read registers */ |
c906108c SS |
1304 | } |
1305 | ||
1306 | static void | |
fba45db2 | 1307 | monitor_fetch_registers (int regno) |
c906108c | 1308 | { |
2df3850c | 1309 | monitor_debug ("MON fetchregs\n"); |
c5aa993b | 1310 | if (current_monitor->getreg.cmd) |
c906108c SS |
1311 | { |
1312 | if (regno >= 0) | |
1313 | { | |
1314 | monitor_fetch_register (regno); | |
1315 | return; | |
1316 | } | |
1317 | ||
1318 | for (regno = 0; regno < NUM_REGS; regno++) | |
1319 | monitor_fetch_register (regno); | |
1320 | } | |
c5aa993b JM |
1321 | else |
1322 | { | |
1323 | monitor_dump_regs (); | |
1324 | } | |
c906108c SS |
1325 | } |
1326 | ||
1327 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ | |
1328 | ||
1329 | static void | |
fba45db2 | 1330 | monitor_store_register (int regno) |
c906108c | 1331 | { |
444199e7 | 1332 | const char *name; |
d4f3574e | 1333 | ULONGEST val; |
1c617db8 GS |
1334 | |
1335 | if (current_monitor->regname != NULL) | |
1336 | name = current_monitor->regname (regno); | |
1337 | else | |
1338 | name = current_monitor->regnames[regno]; | |
1339 | ||
c906108c | 1340 | if (!name || (*name == '\0')) |
c5aa993b | 1341 | { |
2df3850c JM |
1342 | monitor_debug ("MON Cannot store unknown register\n"); |
1343 | return; | |
c906108c SS |
1344 | } |
1345 | ||
1346 | val = read_register (regno); | |
5683e87a | 1347 | monitor_debug ("MON storeg %d %s\n", regno, |
3acba339 | 1348 | phex (val, register_size (current_gdbarch, regno))); |
c906108c SS |
1349 | |
1350 | /* send the register deposit command */ | |
1351 | ||
2df3850c | 1352 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
c906108c SS |
1353 | monitor_printf (current_monitor->setreg.cmd, val, name); |
1354 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1355 | monitor_printf (current_monitor->setreg.cmd, name); | |
1356 | else | |
1357 | monitor_printf (current_monitor->setreg.cmd, name, val); | |
1358 | ||
1456ad8e AC |
1359 | if (current_monitor->setreg.resp_delim) |
1360 | { | |
1361 | monitor_debug ("EXP setreg.resp_delim\n"); | |
1362 | monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0); | |
1363 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) | |
1364 | monitor_printf ("%s\r", paddr_nz (val)); | |
1365 | } | |
c906108c | 1366 | if (current_monitor->setreg.term) |
c5aa993b | 1367 | { |
2df3850c JM |
1368 | monitor_debug ("EXP setreg.term\n"); |
1369 | monitor_expect (current_monitor->setreg.term, NULL, 0); | |
c906108c | 1370 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
2df3850c | 1371 | monitor_printf ("%s\r", paddr_nz (val)); |
c906108c SS |
1372 | monitor_expect_prompt (NULL, 0); |
1373 | } | |
1374 | else | |
1375 | monitor_expect_prompt (NULL, 0); | |
c5aa993b JM |
1376 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ |
1377 | { | |
2df3850c | 1378 | monitor_debug ("EXP setreg_termcmd\n"); |
c5aa993b JM |
1379 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
1380 | monitor_expect_prompt (NULL, 0); | |
c906108c | 1381 | } |
c5aa993b | 1382 | } /* monitor_store_register */ |
c906108c SS |
1383 | |
1384 | /* Store the remote registers. */ | |
1385 | ||
1386 | static void | |
fba45db2 | 1387 | monitor_store_registers (int regno) |
c906108c SS |
1388 | { |
1389 | if (regno >= 0) | |
1390 | { | |
1391 | monitor_store_register (regno); | |
1392 | return; | |
1393 | } | |
1394 | ||
1395 | for (regno = 0; regno < NUM_REGS; regno++) | |
1396 | monitor_store_register (regno); | |
1397 | } | |
1398 | ||
1399 | /* Get ready to modify the registers array. On machines which store | |
1400 | individual registers, this doesn't need to do anything. On machines | |
1401 | which store all the registers in one fell swoop, this makes sure | |
1402 | that registers contains all the registers from the program being | |
1403 | debugged. */ | |
1404 | ||
1405 | static void | |
fba45db2 | 1406 | monitor_prepare_to_store (void) |
c906108c SS |
1407 | { |
1408 | /* Do nothing, since we can store individual regs */ | |
1409 | } | |
1410 | ||
1411 | static void | |
fba45db2 | 1412 | monitor_files_info (struct target_ops *ops) |
c906108c | 1413 | { |
a3f17187 | 1414 | printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate); |
c906108c SS |
1415 | } |
1416 | ||
1417 | static int | |
fba45db2 | 1418 | monitor_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1419 | { |
c5aa993b | 1420 | unsigned int val, hostval; |
c906108c SS |
1421 | char *cmd; |
1422 | int i; | |
1423 | ||
2df3850c | 1424 | monitor_debug ("MON write %d %s\n", len, paddr (memaddr)); |
c906108c | 1425 | |
2df3850c | 1426 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
c906108c SS |
1427 | memaddr = ADDR_BITS_REMOVE (memaddr); |
1428 | ||
1429 | /* Use memory fill command for leading 0 bytes. */ | |
1430 | ||
1431 | if (current_monitor->fill) | |
1432 | { | |
1433 | for (i = 0; i < len; i++) | |
1434 | if (myaddr[i] != 0) | |
1435 | break; | |
1436 | ||
1437 | if (i > 4) /* More than 4 zeros is worth doing */ | |
1438 | { | |
2df3850c JM |
1439 | monitor_debug ("MON FILL %d\n", i); |
1440 | if (current_monitor->flags & MO_FILL_USES_ADDR) | |
c5aa993b JM |
1441 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i) - 1, 0); |
1442 | else | |
1443 | monitor_printf (current_monitor->fill, memaddr, i, 0); | |
c906108c SS |
1444 | |
1445 | monitor_expect_prompt (NULL, 0); | |
1446 | ||
1447 | return i; | |
1448 | } | |
1449 | } | |
1450 | ||
1451 | #if 0 | |
1452 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ | |
1453 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) | |
1454 | { | |
1455 | len = 8; | |
1456 | cmd = current_monitor->setmem.cmdll; | |
1457 | } | |
1458 | else | |
1459 | #endif | |
1460 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) | |
1461 | { | |
1462 | len = 4; | |
1463 | cmd = current_monitor->setmem.cmdl; | |
1464 | } | |
1465 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) | |
1466 | { | |
1467 | len = 2; | |
1468 | cmd = current_monitor->setmem.cmdw; | |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | len = 1; | |
1473 | cmd = current_monitor->setmem.cmdb; | |
1474 | } | |
1475 | ||
1476 | val = extract_unsigned_integer (myaddr, len); | |
c5aa993b | 1477 | |
c906108c | 1478 | if (len == 4) |
c5aa993b JM |
1479 | { |
1480 | hostval = *(unsigned int *) myaddr; | |
2df3850c | 1481 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
c906108c SS |
1482 | } |
1483 | ||
1484 | ||
1485 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) | |
1486 | monitor_printf_noecho (cmd, memaddr, val); | |
1487 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) | |
1488 | { | |
1489 | ||
1490 | monitor_printf_noecho (cmd, memaddr); | |
1491 | ||
1456ad8e AC |
1492 | if (current_monitor->setmem.resp_delim) |
1493 | { | |
1494 | monitor_debug ("EXP setmem.resp_delim"); | |
1495 | monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0); | |
1496 | monitor_printf ("%x\r", val); | |
1497 | } | |
c906108c | 1498 | if (current_monitor->setmem.term) |
c5aa993b | 1499 | { |
2df3850c | 1500 | monitor_debug ("EXP setmem.term"); |
c906108c SS |
1501 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
1502 | monitor_printf ("%x\r", val); | |
1503 | } | |
1504 | if (current_monitor->setmem.term_cmd) | |
c5aa993b JM |
1505 | { /* Emit this to get out of the memory editing state */ |
1506 | monitor_printf ("%s", current_monitor->setmem.term_cmd); | |
c906108c SS |
1507 | /* Drop through to expecting a prompt */ |
1508 | } | |
1509 | } | |
1510 | else | |
1511 | monitor_printf (cmd, memaddr, val); | |
1512 | ||
1513 | monitor_expect_prompt (NULL, 0); | |
1514 | ||
1515 | return len; | |
1516 | } | |
1517 | ||
1518 | ||
c5aa993b | 1519 | static int |
fba45db2 | 1520 | monitor_write_memory_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1521 | { |
c5aa993b JM |
1522 | unsigned char val; |
1523 | int written = 0; | |
1524 | if (len == 0) | |
1525 | return 0; | |
c906108c | 1526 | /* Enter the sub mode */ |
c5aa993b JM |
1527 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
1528 | monitor_expect_prompt (NULL, 0); | |
c906108c SS |
1529 | while (len) |
1530 | { | |
c5aa993b JM |
1531 | val = *myaddr; |
1532 | monitor_printf ("%x\r", val); | |
1533 | myaddr++; | |
1534 | memaddr++; | |
1535 | written++; | |
c906108c | 1536 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1537 | monitor_expect_prompt (NULL, 0); |
1538 | len--; | |
c906108c SS |
1539 | } |
1540 | /* Now exit the sub mode */ | |
1541 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1542 | monitor_expect_prompt (NULL, 0); |
1543 | return written; | |
c906108c SS |
1544 | } |
1545 | ||
1546 | ||
1547 | static void | |
c5aa993b | 1548 | longlongendswap (unsigned char *a) |
c906108c | 1549 | { |
c5aa993b JM |
1550 | int i, j; |
1551 | unsigned char x; | |
1552 | i = 0; | |
1553 | j = 7; | |
c906108c | 1554 | while (i < 4) |
c5aa993b JM |
1555 | { |
1556 | x = *(a + i); | |
1557 | *(a + i) = *(a + j); | |
1558 | *(a + j) = x; | |
1559 | i++, j--; | |
c906108c SS |
1560 | } |
1561 | } | |
1562 | /* Format 32 chars of long long value, advance the pointer */ | |
c5aa993b JM |
1563 | static char *hexlate = "0123456789abcdef"; |
1564 | static char * | |
1565 | longlong_hexchars (unsigned long long value, | |
1566 | char *outbuff) | |
c906108c | 1567 | { |
c5aa993b JM |
1568 | if (value == 0) |
1569 | { | |
1570 | *outbuff++ = '0'; | |
1571 | return outbuff; | |
1572 | } | |
c906108c | 1573 | else |
c5aa993b JM |
1574 | { |
1575 | static unsigned char disbuf[8]; /* disassembly buffer */ | |
1576 | unsigned char *scan, *limit; /* loop controls */ | |
1577 | unsigned char c, nib; | |
1578 | int leadzero = 1; | |
1579 | scan = disbuf; | |
1580 | limit = scan + 8; | |
1581 | { | |
1582 | unsigned long long *dp; | |
1583 | dp = (unsigned long long *) scan; | |
1584 | *dp = value; | |
c906108c | 1585 | } |
c5aa993b | 1586 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts */ |
c906108c | 1587 | while (scan < limit) |
7a292a7a | 1588 | { |
c5aa993b | 1589 | c = *scan++; /* a byte of our long long value */ |
c906108c | 1590 | if (leadzero) |
7a292a7a SS |
1591 | { |
1592 | if (c == 0) | |
1593 | continue; | |
1594 | else | |
c5aa993b | 1595 | leadzero = 0; /* henceforth we print even zeroes */ |
7a292a7a | 1596 | } |
c5aa993b | 1597 | nib = c >> 4; /* high nibble bits */ |
7a292a7a | 1598 | *outbuff++ = hexlate[nib]; |
c5aa993b | 1599 | nib = c & 0x0f; /* low nibble bits */ |
7a292a7a | 1600 | *outbuff++ = hexlate[nib]; |
c906108c | 1601 | } |
c5aa993b | 1602 | return outbuff; |
c906108c | 1603 | } |
c5aa993b | 1604 | } /* longlong_hexchars */ |
c906108c SS |
1605 | |
1606 | ||
1607 | ||
1608 | /* I am only going to call this when writing virtual byte streams. | |
1609 | Which possably entails endian conversions | |
c5aa993b JM |
1610 | */ |
1611 | static int | |
fba45db2 | 1612 | monitor_write_memory_longlongs (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1613 | { |
c5aa993b JM |
1614 | static char hexstage[20]; /* At least 16 digits required, plus null */ |
1615 | char *endstring; | |
1616 | long long *llptr; | |
1617 | long long value; | |
1618 | int written = 0; | |
1619 | llptr = (unsigned long long *) myaddr; | |
1620 | if (len == 0) | |
1621 | return 0; | |
1622 | monitor_printf (current_monitor->setmem.cmdll, memaddr); | |
1623 | monitor_expect_prompt (NULL, 0); | |
1624 | while (len >= 8) | |
1625 | { | |
1626 | value = *llptr; | |
1627 | endstring = longlong_hexchars (*llptr, hexstage); | |
1628 | *endstring = '\0'; /* NUll terminate for printf */ | |
1629 | monitor_printf ("%s\r", hexstage); | |
1630 | llptr++; | |
1631 | memaddr += 8; | |
1632 | written += 8; | |
c906108c | 1633 | /* If we wanted to, here we could validate the address */ |
c5aa993b JM |
1634 | monitor_expect_prompt (NULL, 0); |
1635 | len -= 8; | |
c906108c SS |
1636 | } |
1637 | /* Now exit the sub mode */ | |
1638 | monitor_printf (current_monitor->getreg.term_cmd); | |
c5aa993b JM |
1639 | monitor_expect_prompt (NULL, 0); |
1640 | return written; | |
1641 | } /* */ | |
c906108c SS |
1642 | |
1643 | ||
1644 | ||
1645 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ | |
1646 | /* This is for the large blocks of memory which may occur in downloading. | |
1647 | And for monitors which use interactive entry, | |
1648 | And for monitors which do not have other downloading methods. | |
1649 | Without this, we will end up calling monitor_write_memory many times | |
1650 | and do the entry and exit of the sub mode many times | |
1651 | This currently assumes... | |
c5aa993b JM |
1652 | MO_SETMEM_INTERACTIVE |
1653 | ! MO_NO_ECHO_ON_SETMEM | |
1654 | To use this, the you have to patch the monitor_cmds block with | |
1655 | this function. Otherwise, its not tuned up for use by all | |
1656 | monitor variations. | |
1657 | */ | |
c906108c | 1658 | |
c5aa993b | 1659 | static int |
fba45db2 | 1660 | monitor_write_memory_block (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c | 1661 | { |
c5aa993b JM |
1662 | int written; |
1663 | written = 0; | |
c906108c | 1664 | /* FIXME: This would be a good place to put the zero test */ |
c5aa993b | 1665 | #if 1 |
c906108c | 1666 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
c5aa993b JM |
1667 | { |
1668 | return monitor_write_memory_longlongs (memaddr, myaddr, len); | |
1669 | } | |
c906108c | 1670 | #endif |
c5aa993b JM |
1671 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
1672 | return written; | |
c906108c SS |
1673 | } |
1674 | ||
1675 | /* This is an alternate form of monitor_read_memory which is used for monitors | |
1676 | which can only read a single byte/word/etc. at a time. */ | |
1677 | ||
1678 | static int | |
fba45db2 | 1679 | monitor_read_memory_single (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1680 | { |
1681 | unsigned int val; | |
c5aa993b | 1682 | char membuf[sizeof (int) * 2 + 1]; |
c906108c SS |
1683 | char *p; |
1684 | char *cmd; | |
c906108c | 1685 | |
2df3850c | 1686 | monitor_debug ("MON read single\n"); |
c906108c SS |
1687 | #if 0 |
1688 | /* Can't actually use long longs (nice idea, though). In fact, the | |
1689 | call to strtoul below will fail if it tries to convert a value | |
1690 | that's too big to fit in a long. */ | |
1691 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) | |
1692 | { | |
1693 | len = 8; | |
1694 | cmd = current_monitor->getmem.cmdll; | |
1695 | } | |
1696 | else | |
1697 | #endif | |
1698 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) | |
1699 | { | |
1700 | len = 4; | |
1701 | cmd = current_monitor->getmem.cmdl; | |
1702 | } | |
1703 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) | |
1704 | { | |
1705 | len = 2; | |
1706 | cmd = current_monitor->getmem.cmdw; | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | len = 1; | |
1711 | cmd = current_monitor->getmem.cmdb; | |
1712 | } | |
1713 | ||
1714 | /* Send the examine command. */ | |
1715 | ||
1716 | monitor_printf (cmd, memaddr); | |
1717 | ||
1718 | /* If RESP_DELIM is specified, we search for that as a leading | |
1719 | delimiter for the memory value. Otherwise, we just start | |
1720 | searching from the start of the buf. */ | |
1721 | ||
1722 | if (current_monitor->getmem.resp_delim) | |
c5aa993b | 1723 | { |
2df3850c | 1724 | monitor_debug ("EXP getmem.resp_delim\n"); |
c906108c SS |
1725 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
1726 | } | |
1727 | ||
1728 | /* Now, read the appropriate number of hex digits for this loc, | |
1729 | skipping spaces. */ | |
1730 | ||
1731 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ | |
c5aa993b | 1732 | if (current_monitor->flags & MO_HEX_PREFIX) |
c906108c SS |
1733 | { |
1734 | int c; | |
1735 | ||
1736 | c = readchar (timeout); | |
1737 | while (c == ' ') | |
1738 | c = readchar (timeout); | |
1739 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) | |
1740 | ; | |
1741 | else | |
2df3850c JM |
1742 | monitor_error ("monitor_read_memory_single", |
1743 | "bad response from monitor", | |
93d56215 | 1744 | memaddr, 0, NULL, 0); |
c906108c | 1745 | } |
c906108c | 1746 | |
93d56215 AC |
1747 | { |
1748 | int i; | |
1749 | for (i = 0; i < len * 2; i++) | |
1750 | { | |
1751 | int c; | |
c906108c | 1752 | |
93d56215 AC |
1753 | while (1) |
1754 | { | |
1755 | c = readchar (timeout); | |
1756 | if (isxdigit (c)) | |
1757 | break; | |
1758 | if (c == ' ') | |
1759 | continue; | |
1760 | ||
1761 | monitor_error ("monitor_read_memory_single", | |
1762 | "bad response from monitor", | |
1763 | memaddr, i, membuf, 0); | |
1764 | } | |
c906108c SS |
1765 | membuf[i] = c; |
1766 | } | |
93d56215 AC |
1767 | membuf[i] = '\000'; /* terminate the number */ |
1768 | } | |
c906108c SS |
1769 | |
1770 | /* If TERM is present, we wait for that to show up. Also, (if TERM is | |
1771 | present), we will send TERM_CMD if that is present. In any case, we collect | |
1772 | all of the output into buf, and then wait for the normal prompt. */ | |
1773 | ||
1774 | if (current_monitor->getmem.term) | |
1775 | { | |
c5aa993b | 1776 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ |
c906108c SS |
1777 | |
1778 | if (current_monitor->getmem.term_cmd) | |
1779 | { | |
1780 | monitor_printf (current_monitor->getmem.term_cmd); | |
1781 | monitor_expect_prompt (NULL, 0); | |
1782 | } | |
1783 | } | |
1784 | else | |
c5aa993b | 1785 | monitor_expect_prompt (NULL, 0); /* get response */ |
c906108c SS |
1786 | |
1787 | p = membuf; | |
1788 | val = strtoul (membuf, &p, 16); | |
1789 | ||
1790 | if (val == 0 && membuf == p) | |
2df3850c JM |
1791 | monitor_error ("monitor_read_memory_single", |
1792 | "bad value from monitor", | |
c906108c SS |
1793 | memaddr, 0, membuf, 0); |
1794 | ||
1795 | /* supply register stores in target byte order, so swap here */ | |
1796 | ||
1797 | store_unsigned_integer (myaddr, len, val); | |
1798 | ||
1799 | return len; | |
1800 | } | |
1801 | ||
1802 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's | |
1803 | memory at MEMADDR. Returns length moved. Currently, we do no more | |
1804 | than 16 bytes at a time. */ | |
1805 | ||
1806 | static int | |
fba45db2 | 1807 | monitor_read_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
1808 | { |
1809 | unsigned int val; | |
1810 | char buf[512]; | |
1811 | char *p, *p1; | |
1812 | int resp_len; | |
1813 | int i; | |
1814 | CORE_ADDR dumpaddr; | |
1815 | ||
1816 | if (len <= 0) | |
1817 | { | |
2df3850c | 1818 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
c906108c SS |
1819 | return 0; |
1820 | } | |
1821 | ||
2df3850c JM |
1822 | monitor_debug ("MON read block ta(%s) ha(%lx) %d\n", |
1823 | paddr_nz (memaddr), (long) myaddr, len); | |
c906108c SS |
1824 | |
1825 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
1826 | memaddr = ADDR_BITS_REMOVE (memaddr); | |
1827 | ||
1828 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) | |
1829 | return monitor_read_memory_single (memaddr, myaddr, len); | |
1830 | ||
1831 | len = min (len, 16); | |
1832 | ||
1833 | /* Some dumpers align the first data with the preceeding 16 | |
1834 | byte boundary. Some print blanks and start at the | |
1835 | requested boundary. EXACT_DUMPADDR | |
c5aa993b | 1836 | */ |
c906108c SS |
1837 | |
1838 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) | |
c5aa993b | 1839 | ? memaddr : memaddr & ~0x0f; |
c906108c SS |
1840 | |
1841 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ | |
1842 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) | |
1843 | len = ((memaddr + len) & ~0xf) - memaddr; | |
1844 | ||
1845 | /* send the memory examine command */ | |
1846 | ||
1847 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) | |
7a292a7a | 1848 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
c906108c SS |
1849 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1850 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); | |
1851 | else | |
1852 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); | |
1853 | ||
1854 | /* If TERM is present, we wait for that to show up. Also, (if TERM | |
1855 | is present), we will send TERM_CMD if that is present. In any | |
1856 | case, we collect all of the output into buf, and then wait for | |
1857 | the normal prompt. */ | |
1858 | ||
1859 | if (current_monitor->getmem.term) | |
1860 | { | |
c5aa993b | 1861 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ |
c906108c SS |
1862 | |
1863 | if (resp_len <= 0) | |
2df3850c JM |
1864 | monitor_error ("monitor_read_memory", |
1865 | "excessive response from monitor", | |
c906108c SS |
1866 | memaddr, resp_len, buf, 0); |
1867 | ||
1868 | if (current_monitor->getmem.term_cmd) | |
1869 | { | |
2cd58942 | 1870 | serial_write (monitor_desc, current_monitor->getmem.term_cmd, |
c906108c SS |
1871 | strlen (current_monitor->getmem.term_cmd)); |
1872 | monitor_expect_prompt (NULL, 0); | |
1873 | } | |
1874 | } | |
1875 | else | |
c5aa993b | 1876 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ |
c906108c SS |
1877 | |
1878 | p = buf; | |
1879 | ||
1880 | /* If RESP_DELIM is specified, we search for that as a leading | |
1881 | delimiter for the values. Otherwise, we just start searching | |
1882 | from the start of the buf. */ | |
1883 | ||
1884 | if (current_monitor->getmem.resp_delim) | |
1885 | { | |
1886 | int retval, tmp; | |
1887 | struct re_registers resp_strings; | |
2df3850c | 1888 | monitor_debug ("MON getmem.resp_delim %s\n", current_monitor->getmem.resp_delim); |
c906108c SS |
1889 | |
1890 | memset (&resp_strings, 0, sizeof (struct re_registers)); | |
1891 | tmp = strlen (p); | |
1892 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, | |
1893 | &resp_strings); | |
1894 | ||
1895 | if (retval < 0) | |
2df3850c JM |
1896 | monitor_error ("monitor_read_memory", |
1897 | "bad response from monitor", | |
c906108c SS |
1898 | memaddr, resp_len, buf, 0); |
1899 | ||
1900 | p += resp_strings.end[0]; | |
1901 | #if 0 | |
1902 | p = strstr (p, current_monitor->getmem.resp_delim); | |
1903 | if (!p) | |
2df3850c JM |
1904 | monitor_error ("monitor_read_memory", |
1905 | "bad response from monitor", | |
c906108c SS |
1906 | memaddr, resp_len, buf, 0); |
1907 | p += strlen (current_monitor->getmem.resp_delim); | |
1908 | #endif | |
1909 | } | |
2df3850c | 1910 | monitor_debug ("MON scanning %d ,%lx '%s'\n", len, (long) p, p); |
c906108c SS |
1911 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
1912 | { | |
c5aa993b JM |
1913 | char c; |
1914 | int fetched = 0; | |
c906108c | 1915 | i = len; |
c5aa993b | 1916 | c = *p; |
c906108c | 1917 | |
c5aa993b JM |
1918 | |
1919 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) | |
1920 | { | |
1921 | if (isxdigit (c)) | |
1922 | { | |
1923 | if ((dumpaddr >= memaddr) && (i > 0)) | |
1924 | { | |
1925 | val = fromhex (c) * 16 + fromhex (*(p + 1)); | |
c906108c | 1926 | *myaddr++ = val; |
2df3850c JM |
1927 | if (monitor_debug_p || remote_debug) |
1928 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); | |
c906108c | 1929 | --i; |
c5aa993b | 1930 | fetched++; |
c906108c SS |
1931 | } |
1932 | ++dumpaddr; | |
1933 | ++p; | |
1934 | } | |
c5aa993b JM |
1935 | ++p; /* skip a blank or other non hex char */ |
1936 | c = *p; | |
c906108c | 1937 | } |
c5aa993b | 1938 | if (fetched == 0) |
8a3fe4f8 | 1939 | error (_("Failed to read via monitor")); |
2df3850c JM |
1940 | if (monitor_debug_p || remote_debug) |
1941 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
c5aa993b | 1942 | return fetched; /* Return the number of bytes actually read */ |
c906108c | 1943 | } |
2df3850c | 1944 | monitor_debug ("MON scanning bytes\n"); |
c906108c SS |
1945 | |
1946 | for (i = len; i > 0; i--) | |
1947 | { | |
1948 | /* Skip non-hex chars, but bomb on end of string and newlines */ | |
1949 | ||
1950 | while (1) | |
1951 | { | |
1952 | if (isxdigit (*p)) | |
1953 | break; | |
1954 | ||
1955 | if (*p == '\000' || *p == '\n' || *p == '\r') | |
2df3850c JM |
1956 | monitor_error ("monitor_read_memory", |
1957 | "badly terminated response from monitor", | |
c906108c SS |
1958 | memaddr, resp_len, buf, 0); |
1959 | p++; | |
1960 | } | |
1961 | ||
1962 | val = strtoul (p, &p1, 16); | |
1963 | ||
1964 | if (val == 0 && p == p1) | |
2df3850c JM |
1965 | monitor_error ("monitor_read_memory", |
1966 | "bad value from monitor", | |
c906108c SS |
1967 | memaddr, resp_len, buf, 0); |
1968 | ||
1969 | *myaddr++ = val; | |
1970 | ||
1971 | if (i == 1) | |
1972 | break; | |
1973 | ||
1974 | p = p1; | |
1975 | } | |
1976 | ||
1977 | return len; | |
1978 | } | |
1979 | ||
0e7e8d51 KB |
1980 | /* Transfer LEN bytes between target address MEMADDR and GDB address |
1981 | MYADDR. Returns 0 for success, errno code for failure. TARGET is | |
1982 | unused. */ | |
1983 | ||
c906108c | 1984 | static int |
0e7e8d51 | 1985 | monitor_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
0a65a603 | 1986 | struct mem_attrib *attrib, struct target_ops *target) |
c906108c | 1987 | { |
4930751a C |
1988 | int res; |
1989 | ||
1990 | if (write) | |
1991 | { | |
1992 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) | |
1993 | res = monitor_write_memory_block(memaddr, myaddr, len); | |
1994 | else | |
1995 | res = monitor_write_memory(memaddr, myaddr, len); | |
1996 | } | |
1997 | else | |
1998 | { | |
1999 | res = monitor_read_memory(memaddr, myaddr, len); | |
2000 | } | |
2001 | ||
2002 | return res; | |
c906108c SS |
2003 | } |
2004 | ||
2005 | static void | |
fba45db2 | 2006 | monitor_kill (void) |
c906108c | 2007 | { |
c5aa993b | 2008 | return; /* ignore attempts to kill target system */ |
c906108c SS |
2009 | } |
2010 | ||
2011 | /* All we actually do is set the PC to the start address of exec_bfd, and start | |
2012 | the program at that point. */ | |
2013 | ||
2014 | static void | |
c27cda74 AC |
2015 | monitor_create_inferior (char *exec_file, char *args, char **env, |
2016 | int from_tty) | |
c906108c SS |
2017 | { |
2018 | if (args && (*args != '\000')) | |
8a3fe4f8 | 2019 | error (_("Args are not supported by the monitor.")); |
c906108c SS |
2020 | |
2021 | first_time = 1; | |
2022 | clear_proceed_status (); | |
2023 | proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0); | |
2024 | } | |
2025 | ||
2026 | /* Clean up when a program exits. | |
2027 | The program actually lives on in the remote processor's RAM, and may be | |
2028 | run again without a download. Don't leave it full of breakpoint | |
2029 | instructions. */ | |
2030 | ||
2031 | static void | |
fba45db2 | 2032 | monitor_mourn_inferior (void) |
c906108c SS |
2033 | { |
2034 | unpush_target (targ_ops); | |
2035 | generic_mourn_inferior (); /* Do all the proper things now */ | |
2036 | } | |
2037 | ||
c906108c SS |
2038 | /* Tell the monitor to add a breakpoint. */ |
2039 | ||
2040 | static int | |
fba45db2 | 2041 | monitor_insert_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
2042 | { |
2043 | int i; | |
f4f9705a | 2044 | const unsigned char *bp; |
c906108c SS |
2045 | int bplen; |
2046 | ||
2df3850c JM |
2047 | monitor_debug ("MON inst bkpt %s\n", paddr (addr)); |
2048 | if (current_monitor->set_break == NULL) | |
8a3fe4f8 | 2049 | error (_("No set_break defined for this monitor")); |
c906108c SS |
2050 | |
2051 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2052 | addr = ADDR_BITS_REMOVE (addr); | |
2053 | ||
2054 | /* Determine appropriate breakpoint size for this address. */ | |
aaab4dba | 2055 | bp = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &bplen); |
c906108c | 2056 | |
9e086581 | 2057 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2058 | { |
2059 | if (breakaddr[i] == 0) | |
2060 | { | |
2061 | breakaddr[i] = addr; | |
2062 | monitor_read_memory (addr, shadow, bplen); | |
2063 | monitor_printf (current_monitor->set_break, addr); | |
2064 | monitor_expect_prompt (NULL, 0); | |
2065 | return 0; | |
2066 | } | |
2067 | } | |
2068 | ||
8a3fe4f8 | 2069 | error (_("Too many breakpoints (> %d) for monitor."), current_monitor->num_breakpoints); |
c906108c SS |
2070 | } |
2071 | ||
2072 | /* Tell the monitor to remove a breakpoint. */ | |
2073 | ||
2074 | static int | |
fba45db2 | 2075 | monitor_remove_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
2076 | { |
2077 | int i; | |
2078 | ||
2df3850c JM |
2079 | monitor_debug ("MON rmbkpt %s\n", paddr (addr)); |
2080 | if (current_monitor->clr_break == NULL) | |
8a3fe4f8 | 2081 | error (_("No clr_break defined for this monitor")); |
c906108c SS |
2082 | |
2083 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) | |
2084 | addr = ADDR_BITS_REMOVE (addr); | |
2085 | ||
9e086581 | 2086 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
c906108c SS |
2087 | { |
2088 | if (breakaddr[i] == addr) | |
2089 | { | |
2090 | breakaddr[i] = 0; | |
2091 | /* some monitors remove breakpoints based on the address */ | |
2092 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) | |
2093 | monitor_printf (current_monitor->clr_break, addr); | |
2094 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) | |
2095 | monitor_printf (current_monitor->clr_break, i + 1); | |
2096 | else | |
2097 | monitor_printf (current_monitor->clr_break, i); | |
2098 | monitor_expect_prompt (NULL, 0); | |
2099 | return 0; | |
2100 | } | |
2101 | } | |
2102 | fprintf_unfiltered (gdb_stderr, | |
2df3850c JM |
2103 | "Can't find breakpoint associated with 0x%s\n", |
2104 | paddr_nz (addr)); | |
c906108c SS |
2105 | return 1; |
2106 | } | |
2107 | ||
2108 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for | |
2109 | an S-record. Return non-zero if the ACK is received properly. */ | |
2110 | ||
2111 | static int | |
fba45db2 | 2112 | monitor_wait_srec_ack (void) |
c906108c | 2113 | { |
d4f3574e | 2114 | int ch; |
c906108c SS |
2115 | |
2116 | if (current_monitor->flags & MO_SREC_ACK_PLUS) | |
2117 | { | |
2118 | return (readchar (timeout) == '+'); | |
2119 | } | |
2120 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) | |
2121 | { | |
2122 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ | |
2123 | if ((ch = readchar (1)) < 0) | |
2124 | return 0; | |
2125 | if ((ch = readchar (1)) < 0) | |
2126 | return 0; | |
2127 | if ((ch = readchar (1)) < 0) | |
2128 | return 0; | |
2129 | if ((ch = readchar (1)) < 0) | |
2130 | return 0; | |
2131 | } | |
2132 | return 1; | |
2133 | } | |
2134 | ||
2135 | /* monitor_load -- download a file. */ | |
2136 | ||
2137 | static void | |
fba45db2 | 2138 | monitor_load (char *file, int from_tty) |
c906108c | 2139 | { |
2df3850c | 2140 | monitor_debug ("MON load\n"); |
c906108c | 2141 | |
2df3850c | 2142 | if (current_monitor->load_routine) |
c906108c SS |
2143 | current_monitor->load_routine (monitor_desc, file, hashmark); |
2144 | else | |
2145 | { /* The default is ascii S-records */ | |
2146 | int n; | |
2147 | unsigned long load_offset; | |
2148 | char buf[128]; | |
2149 | ||
2150 | /* enable user to specify address for downloading as 2nd arg to load */ | |
2151 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); | |
2152 | if (n > 1) | |
2153 | file = buf; | |
2154 | else | |
2155 | load_offset = 0; | |
2156 | ||
2157 | monitor_printf (current_monitor->load); | |
2158 | if (current_monitor->loadresp) | |
2159 | monitor_expect (current_monitor->loadresp, NULL, 0); | |
2160 | ||
2161 | load_srec (monitor_desc, file, (bfd_vma) load_offset, | |
2162 | 32, SREC_ALL, hashmark, | |
2163 | current_monitor->flags & MO_SREC_ACK ? | |
c5aa993b | 2164 | monitor_wait_srec_ack : NULL); |
c906108c SS |
2165 | |
2166 | monitor_expect_prompt (NULL, 0); | |
2167 | } | |
2168 | ||
fe490085 | 2169 | /* Finally, make the PC point at the start address */ |
c906108c SS |
2170 | if (exec_bfd) |
2171 | write_pc (bfd_get_start_address (exec_bfd)); | |
2172 | ||
e8816aac JB |
2173 | /* There used to be code here which would clear inferior_ptid and |
2174 | call clear_symtab_users. None of that should be necessary: | |
2175 | monitor targets should behave like remote protocol targets, and | |
2176 | since generic_load does none of those things, this function | |
2177 | shouldn't either. | |
2178 | ||
2179 | Furthermore, clearing inferior_ptid is *incorrect*. After doing | |
2180 | a load, we still have a valid connection to the monitor, with a | |
2181 | live processor state to fiddle with. The user can type | |
2182 | `continue' or `jump *start' and make the program run. If they do | |
2183 | these things, however, GDB will be talking to a running program | |
2184 | while inferior_ptid is null_ptid; this makes things like | |
2185 | reinit_frame_cache very confused. */ | |
c906108c SS |
2186 | } |
2187 | ||
2188 | static void | |
fba45db2 | 2189 | monitor_stop (void) |
c906108c | 2190 | { |
2df3850c | 2191 | monitor_debug ("MON stop\n"); |
c906108c | 2192 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
2cd58942 | 2193 | serial_send_break (monitor_desc); |
c906108c SS |
2194 | if (current_monitor->stop) |
2195 | monitor_printf_noecho (current_monitor->stop); | |
2196 | } | |
2197 | ||
96baa820 JM |
2198 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
2199 | in OUTPUT until the prompt is seen. FIXME: We read the characters | |
2200 | ourseleves here cause of a nasty echo. */ | |
c906108c SS |
2201 | |
2202 | static void | |
96baa820 | 2203 | monitor_rcmd (char *command, |
d9fcf2fb | 2204 | struct ui_file *outbuf) |
c906108c SS |
2205 | { |
2206 | char *p; | |
2207 | int resp_len; | |
2208 | char buf[1000]; | |
2209 | ||
2210 | if (monitor_desc == NULL) | |
8a3fe4f8 | 2211 | error (_("monitor target not open.")); |
c906108c SS |
2212 | |
2213 | p = current_monitor->prompt; | |
2214 | ||
2215 | /* Send the command. Note that if no args were supplied, then we're | |
2216 | just sending the monitor a newline, which is sometimes useful. */ | |
2217 | ||
96baa820 | 2218 | monitor_printf ("%s\r", (command ? command : "")); |
c906108c SS |
2219 | |
2220 | resp_len = monitor_expect_prompt (buf, sizeof buf); | |
2221 | ||
96baa820 | 2222 | fputs_unfiltered (buf, outbuf); /* Output the response */ |
c906108c SS |
2223 | } |
2224 | ||
2225 | /* Convert hex digit A to a number. */ | |
2226 | ||
2227 | #if 0 | |
2228 | static int | |
fba45db2 | 2229 | from_hex (int a) |
c5aa993b | 2230 | { |
c906108c SS |
2231 | if (a >= '0' && a <= '9') |
2232 | return a - '0'; | |
2233 | if (a >= 'a' && a <= 'f') | |
2234 | return a - 'a' + 10; | |
2235 | if (a >= 'A' && a <= 'F') | |
2236 | return a - 'A' + 10; | |
2237 | ||
8a3fe4f8 | 2238 | error (_("Reply contains invalid hex digit 0x%x"), a); |
c906108c SS |
2239 | } |
2240 | #endif | |
2241 | ||
2242 | char * | |
fba45db2 | 2243 | monitor_get_dev_name (void) |
c906108c SS |
2244 | { |
2245 | return dev_name; | |
2246 | } | |
2247 | ||
2248 | static struct target_ops monitor_ops; | |
2249 | ||
2250 | static void | |
2251 | init_base_monitor_ops (void) | |
2252 | { | |
c906108c | 2253 | monitor_ops.to_close = monitor_close; |
c906108c | 2254 | monitor_ops.to_detach = monitor_detach; |
c906108c SS |
2255 | monitor_ops.to_resume = monitor_resume; |
2256 | monitor_ops.to_wait = monitor_wait; | |
c906108c SS |
2257 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
2258 | monitor_ops.to_store_registers = monitor_store_registers; | |
2259 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; | |
c8e73a31 | 2260 | monitor_ops.deprecated_xfer_memory = monitor_xfer_memory; |
c906108c SS |
2261 | monitor_ops.to_files_info = monitor_files_info; |
2262 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; | |
2263 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; | |
c906108c SS |
2264 | monitor_ops.to_kill = monitor_kill; |
2265 | monitor_ops.to_load = monitor_load; | |
c906108c | 2266 | monitor_ops.to_create_inferior = monitor_create_inferior; |
c906108c | 2267 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
c906108c | 2268 | monitor_ops.to_stop = monitor_stop; |
96baa820 | 2269 | monitor_ops.to_rcmd = monitor_rcmd; |
c906108c | 2270 | monitor_ops.to_stratum = process_stratum; |
c906108c SS |
2271 | monitor_ops.to_has_all_memory = 1; |
2272 | monitor_ops.to_has_memory = 1; | |
2273 | monitor_ops.to_has_stack = 1; | |
2274 | monitor_ops.to_has_registers = 1; | |
2275 | monitor_ops.to_has_execution = 1; | |
c906108c | 2276 | monitor_ops.to_magic = OPS_MAGIC; |
c5aa993b | 2277 | } /* init_base_monitor_ops */ |
c906108c SS |
2278 | |
2279 | /* Init the target_ops structure pointed at by OPS */ | |
2280 | ||
2281 | void | |
fba45db2 | 2282 | init_monitor_ops (struct target_ops *ops) |
c906108c SS |
2283 | { |
2284 | if (monitor_ops.to_magic != OPS_MAGIC) | |
2285 | init_base_monitor_ops (); | |
2286 | ||
2287 | memcpy (ops, &monitor_ops, sizeof monitor_ops); | |
2288 | } | |
2289 | ||
2290 | /* Define additional commands that are usually only used by monitors. */ | |
2291 | ||
a78f21af AC |
2292 | extern initialize_file_ftype _initialize_remote_monitors; /* -Wmissing-prototypes */ |
2293 | ||
c906108c | 2294 | void |
fba45db2 | 2295 | _initialize_remote_monitors (void) |
c906108c SS |
2296 | { |
2297 | init_base_monitor_ops (); | |
5bf193a2 AC |
2298 | add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\ |
2299 | Set display of activity while downloading a file."), _("\ | |
2300 | Show display of activity while downloading a file."), _("\ | |
2301 | When enabled, a hashmark \'#\' is displayed."), | |
2302 | NULL, | |
2303 | NULL, /* FIXME: i18n: */ | |
2304 | &setlist, &showlist); | |
2df3850c | 2305 | |
85c07804 AC |
2306 | add_setshow_zinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\ |
2307 | Set debugging of remote monitor communication."), _("\ | |
2308 | Show debugging of remote monitor communication."), _("\ | |
2df3850c | 2309 | When enabled, communication between GDB and the remote monitor\n\ |
85c07804 AC |
2310 | is displayed."), |
2311 | NULL, | |
2312 | NULL, /* FIXME: i18n: */ | |
2313 | &setdebuglist, &showdebuglist); | |
c906108c | 2314 | } |