Commit | Line | Data |
---|---|---|
51d6a954 RS |
1 | /* Remote debugging interface for boot monitors, for GDB. |
2 | Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. | |
3 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | /* This file was derived from various remote-* modules. It is a collection | |
22 | of generic support functions so GDB can talk directly to a ROM based | |
23 | monitor. This saves use from having to hack an exception based handler | |
24 | into existance, and makes for quick porting. | |
25 | ||
26 | This module talks to a debug monitor called 'MONITOR', which | |
27 | We communicate with MONITOR via either a direct serial line, or a TCP | |
28 | (or possibly TELNET) stream to a terminal multiplexor, | |
29 | which in turn talks to the target board. | |
30 | */ | |
31 | ||
32 | #include "defs.h" | |
33 | #include "gdbcore.h" | |
34 | #include "target.h" | |
35 | #include "wait.h" | |
36 | #include <varargs.h> | |
37 | #include <signal.h> | |
38 | #include <string.h> | |
39 | #include <sys/types.h> | |
40 | #include "command.h" | |
41 | #include "serial.h" | |
42 | #include "monitor.h" | |
43 | #include "remote-utils.h" | |
44 | ||
45 | #ifdef HAVE_TERMIO | |
46 | # define TERMINAL struct termios | |
47 | #else | |
48 | # define TERMINAL struct sgttyb | |
49 | #endif | |
50 | ||
51 | struct monitor_ops *current_monitor; | |
52 | extern struct cmd_list_element *setlist; | |
53 | extern struct cmd_list_element *unsetlist; | |
54 | struct cmd_list_element *showlist; | |
21ed3dcd RS |
55 | extern char *version; |
56 | extern char *host_name; | |
57 | extern char *target_name; | |
51d6a954 RS |
58 | |
59 | static int hashmark; /* flag set by "set hash" */ | |
60 | ||
61 | /* FIXME: Replace with sr_get_debug (). */ | |
62 | #define LOG_FILE "monitor.log" | |
63 | #if defined (LOG_FILE) | |
64 | FILE *log_file; | |
65 | #endif | |
66 | ||
67 | static int timeout = 24; | |
68 | ||
69 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
70 | monitor_open knows that we don't have a file open when the program starts. | |
71 | */ | |
72 | static serial_t monitor_desc = NULL; | |
73 | ||
74 | /* sets the download protocol, choices are srec, generic, boot */ | |
75 | char *loadtype; | |
76 | static char *loadtype_str; | |
77 | static void set_loadtype_command(); | |
21ed3dcd RS |
78 | static void monitor_load_srec(); |
79 | static int monitor_write_srec(); | |
51d6a954 RS |
80 | |
81 | /* | |
82 | * set_loadtype_command -- set the type for downloading. Check to make | |
83 | * sure you have a support protocol for this target. | |
84 | */ | |
85 | static void | |
86 | set_loadtype_command (ignore, from_tty, c) | |
87 | char *ignore; | |
88 | int from_tty; | |
89 | struct cmd_list_element *c; | |
90 | { | |
21ed3dcd | 91 | char *tmp; |
51d6a954 | 92 | char *type; |
21ed3dcd | 93 | if (STREQ (LOADTYPES, "")) { |
51d6a954 RS |
94 | error ("No loadtype set"); |
95 | return; | |
96 | } | |
97 | ||
21ed3dcd RS |
98 | tmp = savestring (LOADTYPES, strlen(LOADTYPES)); |
99 | type = strtok(tmp, ","); | |
51d6a954 RS |
100 | if (STREQ (type, (*(char **) c->var))) { |
101 | loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var)); | |
102 | return; | |
103 | } | |
104 | ||
21ed3dcd | 105 | while ((type = strtok (NULL, ",")) != (char *)NULL) { |
51d6a954 RS |
106 | if (STREQ (type, (*(char **) c->var))) |
107 | loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var)); | |
21ed3dcd RS |
108 | return; |
109 | } | |
110 | free (tmp); | |
111 | error ("Loadtype \"%s\" does not exist.", (*(char **) c->var)); | |
51d6a954 RS |
112 | } |
113 | ||
114 | /* | |
115 | * printf_monitor -- send data to monitor. Works just like printf. | |
116 | */ | |
117 | static void | |
118 | printf_monitor(va_alist) | |
119 | va_dcl | |
120 | { | |
121 | va_list args; | |
122 | char *pattern; | |
123 | char buf[200]; | |
124 | int i; | |
125 | ||
126 | va_start(args); | |
127 | ||
128 | pattern = va_arg(args, char *); | |
129 | ||
130 | vsprintf(buf, pattern, args); | |
131 | ||
e6fa5bd6 | 132 | debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf); |
51d6a954 RS |
133 | |
134 | if (SERIAL_WRITE(monitor_desc, buf, strlen(buf))) | |
135 | fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno)); | |
136 | } | |
137 | ||
e6fa5bd6 RS |
138 | /* |
139 | * debuglogs -- deal with debugging info to multiple sources. This takes | |
140 | * two real args, the first one is the level to be compared against | |
141 | * the sr_get_debug() value, the second arg is a printf buffer and args | |
142 | * to be formatted and printed. A CR is added after each string is printed. | |
143 | */ | |
144 | static void | |
145 | debuglogs(va_alist) | |
146 | va_dcl | |
147 | { | |
148 | va_list args; | |
149 | char *pattern, *p; | |
150 | char buf[200]; | |
151 | char newbuf[300]; | |
152 | int level, i; | |
153 | ||
154 | va_start(args); | |
155 | ||
156 | level = va_arg(args, int); /* get the debug level */ | |
157 | if ((level <0) || (level > 100)) { | |
158 | error ("Bad argument passed to debuglogs()"); | |
159 | return; | |
160 | } | |
161 | ||
162 | pattern = va_arg(args, char *); /* get the printf style pattern */ | |
163 | ||
164 | vsprintf(buf, pattern, args); /* format the string */ | |
165 | ||
166 | /* convert some characters so it'll look right in the log */ | |
167 | p = newbuf; | |
168 | for (i=0 ; buf[i] != '\0'; i++) { | |
169 | switch (buf[i]) { | |
170 | case '\n': /* newlines */ | |
171 | *p++ = '\\'; | |
172 | *p++ = 'n'; | |
173 | continue; | |
174 | case '\r': /* carriage returns */ | |
175 | *p++ = '\\'; | |
176 | *p++ = 'r'; | |
177 | continue; | |
178 | case '\033': /* escape */ | |
179 | *p++ = '\\'; | |
180 | *p++ = 'e'; | |
181 | continue; | |
182 | case '\t': /* tab */ | |
183 | *p++ = '\\'; | |
184 | *p++ = 't'; | |
185 | continue; | |
186 | case '\b': /* backspace */ | |
187 | *p++ = '\\'; | |
188 | *p++ = 'b'; | |
189 | continue; | |
190 | default: /* no change */ | |
191 | *p++ = buf[i]; | |
192 | } | |
193 | ||
194 | if (buf[i] < 26) { /* modify control characters */ | |
195 | *p++ = '^'; | |
196 | *p++ = buf[i] + 'A'; | |
197 | continue; | |
198 | } | |
199 | } | |
200 | *p = '\0'; /* terminate the string */ | |
201 | ||
202 | if (sr_get_debug() > level) | |
203 | puts (newbuf); | |
204 | ||
205 | #ifdef LOG_FILE /* write to the monitor log */ | |
206 | if (log_file != 0x0) { | |
207 | fputs (newbuf, log_file); | |
208 | fputc ('\n', log_file); | |
209 | fflush (log_file); | |
210 | } | |
211 | #endif | |
212 | } | |
213 | ||
7804e5bc RS |
214 | /* readchar -- read a character from the remote system, doing all the fancy |
215 | * timeout stuff. | |
216 | */ | |
51d6a954 RS |
217 | static int |
218 | readchar(timeout) | |
219 | int timeout; | |
220 | { | |
221 | int c; | |
222 | ||
223 | c = SERIAL_READCHAR(monitor_desc, timeout); | |
224 | ||
e6fa5bd6 | 225 | if (sr_get_debug() > 4) |
51d6a954 RS |
226 | putchar(c & 0x7f); |
227 | ||
228 | #ifdef LOG_FILE | |
229 | if (isascii (c)) | |
230 | putc(c & 0x7f, log_file); | |
231 | #endif | |
232 | ||
233 | if (c >= 0) | |
234 | return c & 0x7f; | |
235 | ||
7804e5bc RS |
236 | if (c == SERIAL_TIMEOUT) { |
237 | if (timeout == 0) | |
238 | return c; /* Polls shouldn't generate timeout errors */ | |
239 | error("Timeout reading from remote system."); | |
7a1330f7 RS |
240 | #ifdef LOG_FILE |
241 | fputc ("ERROR: Timeout reading from remote system", log_file); | |
242 | #endif | |
7804e5bc | 243 | } |
51d6a954 RS |
244 | perror_with_name("remote-monitor"); |
245 | } | |
246 | ||
7804e5bc RS |
247 | /* |
248 | * expect -- scan input from the remote system, until STRING is found. | |
249 | * If DISCARD is non-zero, then discard non-matching input, else print | |
250 | * it out. Let the user break out immediately. | |
251 | */ | |
51d6a954 RS |
252 | static void |
253 | expect (string, discard) | |
254 | char *string; | |
255 | int discard; | |
256 | { | |
257 | char *p = string; | |
258 | int c; | |
259 | ||
260 | ||
e6fa5bd6 | 261 | debuglogs (1, "Expecting \"%s\".", string); |
51d6a954 RS |
262 | |
263 | immediate_quit = 1; | |
264 | while (1) { | |
265 | c = readchar(timeout); | |
266 | if (!isascii (c)) | |
267 | continue; | |
268 | if (c == *p++) { | |
269 | if (*p == '\0') { | |
270 | immediate_quit = 0; | |
7a1330f7 | 271 | debuglogs (4, "Matched"); |
51d6a954 RS |
272 | return; |
273 | } | |
274 | } else { | |
275 | if (!discard) { | |
276 | fwrite(string, 1, (p - 1) - string, stdout); | |
277 | putchar((char)c); | |
278 | fflush(stdout); | |
279 | } | |
280 | p = string; | |
281 | } | |
282 | } | |
283 | } | |
284 | ||
285 | /* Keep discarding input until we see the MONITOR prompt. | |
286 | ||
287 | The convention for dealing with the prompt is that you | |
288 | o give your command | |
289 | o *then* wait for the prompt. | |
290 | ||
291 | Thus the last thing that a procedure does with the serial line | |
292 | will be an expect_prompt(). Exception: monitor_resume does not | |
293 | wait for the prompt, because the terminal is being handed over | |
294 | to the inferior. However, the next thing which happens after that | |
295 | is a monitor_wait which does wait for the prompt. | |
296 | Note that this includes abnormal exit, e.g. error(). This is | |
297 | necessary to prevent getting into states from which we can't | |
298 | recover. */ | |
299 | static void | |
300 | expect_prompt(discard) | |
301 | int discard; | |
302 | { | |
303 | #if defined (LOG_FILE) | |
304 | /* This is a convenient place to do this. The idea is to do it often | |
305 | enough that we never lose much data if we terminate abnormally. */ | |
306 | fflush(log_file); | |
307 | #endif | |
308 | expect (PROMPT, discard); | |
309 | } | |
310 | ||
311 | /* | |
312 | * junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise | |
313 | */ | |
314 | static int | |
315 | junk(ch) | |
316 | char ch; | |
317 | { | |
318 | switch (ch) { | |
319 | case ' ': | |
320 | case '-': | |
321 | case '\t': | |
322 | case '\r': | |
323 | case '\n': | |
324 | if (sr_get_debug() > 5) | |
e6fa5bd6 | 325 | debuglogs (5, "Ignoring \'%c\'.", ch); |
51d6a954 RS |
326 | return 1; |
327 | default: | |
328 | if (sr_get_debug() > 5) | |
e6fa5bd6 | 329 | debuglogs (5, "Accepting \'%c\'.", ch); |
51d6a954 RS |
330 | return 0; |
331 | } | |
332 | } | |
333 | ||
334 | /* | |
335 | * get_hex_digit -- Get a hex digit from the remote system & return its value. | |
336 | * If ignore is nonzero, ignore spaces, newline & tabs. | |
337 | */ | |
338 | static int | |
339 | get_hex_digit(ignore) | |
340 | int ignore; | |
341 | { | |
342 | static int ch; | |
343 | while (1) { | |
344 | ch = readchar(timeout); | |
345 | if (junk(ch)) | |
346 | continue; | |
347 | if (sr_get_debug() > 4) | |
e6fa5bd6 | 348 | debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch); |
51d6a954 RS |
349 | |
350 | if (ch >= '0' && ch <= '9') | |
351 | return ch - '0'; | |
352 | else if (ch >= 'A' && ch <= 'F') | |
353 | return ch - 'A' + 10; | |
354 | else if (ch >= 'a' && ch <= 'f') | |
355 | return ch - 'a' + 10; | |
356 | else if (ch == ' ' && ignore) | |
357 | ; | |
358 | else { | |
359 | expect_prompt(1); | |
360 | error("Invalid hex digit from remote system."); | |
361 | } | |
362 | } | |
363 | } | |
364 | ||
365 | /* get_hex_byte -- Get a byte from monitor and put it in *BYT. | |
366 | * Accept any number leading spaces. | |
367 | */ | |
368 | static void | |
369 | get_hex_byte (byt) | |
370 | char *byt; | |
371 | { | |
372 | int val; | |
373 | ||
374 | val = get_hex_digit (1) << 4; | |
e6fa5bd6 | 375 | debuglogs (4, "get_hex_digit() -- Read first nibble 0x%x", val); |
51d6a954 RS |
376 | |
377 | val |= get_hex_digit (0); | |
e6fa5bd6 | 378 | debuglogs (4, "get_hex_digit() -- Read second nibble 0x%x", val); |
51d6a954 RS |
379 | *byt = val; |
380 | ||
e6fa5bd6 | 381 | debuglogs (4, "get_hex_digit() -- Read a 0x%x", val); |
51d6a954 RS |
382 | } |
383 | ||
384 | /* | |
385 | * get_hex_word -- Get N 32-bit words from remote, each preceded by a space, | |
386 | * and put them in registers starting at REGNO. | |
387 | */ | |
388 | static int | |
389 | get_hex_word () | |
390 | { | |
391 | long val; | |
392 | int i; | |
393 | ||
394 | val = 0; | |
395 | for (i = 0; i < 8; i++) | |
396 | val = (val << 4) + get_hex_digit (i == 0); | |
397 | ||
7a1330f7 | 398 | debuglogs (4, "get_hex_word() got a 0x%x.", val); |
51d6a954 RS |
399 | |
400 | return val; | |
401 | } | |
402 | ||
403 | /* This is called not only when we first attach, but also when the | |
404 | user types "run" after having attached. */ | |
405 | void | |
406 | monitor_create_inferior (execfile, args, env) | |
407 | char *execfile; | |
408 | char *args; | |
409 | char **env; | |
410 | { | |
411 | int entry_pt; | |
412 | ||
413 | if (args && *args) | |
414 | error("Can't pass arguments to remote MONITOR process"); | |
415 | ||
416 | if (execfile == 0 || exec_bfd == 0) | |
417 | error("No exec file specified"); | |
418 | ||
419 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
420 | ||
7a1330f7 | 421 | debuglogs (1, "create_inferior(exexfile=%s, args=%s, env=%s)", execfile, args, env); |
51d6a954 RS |
422 | |
423 | /* The "process" (board) is already stopped awaiting our commands, and | |
424 | the program is already downloaded. We just set its PC and go. */ | |
425 | ||
426 | clear_proceed_status (); | |
427 | ||
428 | /* Tell wait_for_inferior that we've started a new process. */ | |
429 | init_wait_for_inferior (); | |
430 | ||
431 | /* Set up the "saved terminal modes" of the inferior | |
432 | based on what modes we are starting it with. */ | |
433 | target_terminal_init (); | |
434 | ||
435 | /* Install inferior's terminal modes. */ | |
436 | target_terminal_inferior (); | |
437 | ||
438 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
439 | ||
440 | /* Let 'er rip... */ | |
441 | proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0); | |
442 | } | |
443 | ||
7804e5bc RS |
444 | /* |
445 | * monitor_open -- open a connection to a remote debugger. | |
446 | * NAME is the filename used for communication. | |
447 | */ | |
51d6a954 RS |
448 | static int baudrate = 9600; |
449 | static char dev_name[100]; | |
450 | ||
451 | void | |
452 | monitor_open(args, name, from_tty) | |
453 | char *args; | |
454 | char *name; | |
455 | int from_tty; | |
456 | { | |
457 | ||
458 | if (args == NULL) | |
459 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ | |
460 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); | |
461 | ||
462 | /* if (is_open) */ | |
463 | monitor_close(0); | |
464 | ||
465 | strcpy(dev_name, args); | |
466 | monitor_desc = SERIAL_OPEN(dev_name); | |
467 | ||
468 | if (monitor_desc == NULL) | |
469 | perror_with_name(dev_name); | |
470 | ||
7a1330f7 RS |
471 | if (baud_rate != -1) { |
472 | if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) { | |
473 | SERIAL_CLOSE (monitor_desc); | |
474 | perror_with_name (name); | |
51d6a954 | 475 | } |
7a1330f7 RS |
476 | } |
477 | ||
51d6a954 RS |
478 | SERIAL_RAW(monitor_desc); |
479 | ||
480 | #if defined (LOG_FILE) | |
481 | log_file = fopen (LOG_FILE, "w"); | |
482 | if (log_file == NULL) | |
483 | perror_with_name (LOG_FILE); | |
21ed3dcd RS |
484 | fprintf_filtered (log_file, "GDB %s (%s", version, host_name); |
485 | fprintf_filtered (log_file, " --target %s)\n", target_name); | |
486 | fprintf_filtered (log_file, "Remote target %s connected to %s\n\n", TARGET_NAME, dev_name); | |
51d6a954 RS |
487 | #endif |
488 | ||
489 | /* wake up the monitor and see if it's alive */ | |
490 | printf_monitor(INIT_CMD); | |
491 | expect_prompt(1); /* See if we get a prompt */ | |
492 | ||
493 | /* try again to be sure */ | |
494 | printf_monitor(INIT_CMD); | |
495 | expect_prompt(1); /* See if we get a prompt */ | |
496 | ||
497 | if (from_tty) | |
498 | printf("Remote target %s connected to %s\n", TARGET_NAME, dev_name); | |
51d6a954 RS |
499 | } |
500 | ||
501 | /* | |
7804e5bc RS |
502 | * monitor_close -- Close out all files and local state before this |
503 | * target loses control. | |
51d6a954 RS |
504 | */ |
505 | ||
506 | void | |
507 | monitor_close (quitting) | |
508 | int quitting; | |
509 | { | |
510 | SERIAL_CLOSE(monitor_desc); | |
511 | monitor_desc = NULL; | |
512 | ||
e6fa5bd6 | 513 | debuglogs (1, "monitor_close (quitting=%d)", quitting); |
7804e5bc | 514 | |
51d6a954 RS |
515 | #if defined (LOG_FILE) |
516 | if (log_file) { | |
517 | if (ferror(log_file)) | |
518 | fprintf(stderr, "Error writing log file.\n"); | |
519 | if (fclose(log_file) != 0) | |
520 | fprintf(stderr, "Error closing log file.\n"); | |
521 | } | |
522 | #endif | |
523 | } | |
524 | ||
7804e5bc RS |
525 | /* |
526 | * monitor_detach -- terminate the open connection to the remote | |
527 | * debugger. Use this when you want to detach and do something | |
528 | * else with your gdb. | |
529 | */ | |
51d6a954 RS |
530 | void |
531 | monitor_detach (from_tty) | |
532 | int from_tty; | |
533 | { | |
e6fa5bd6 | 534 | |
7a1330f7 | 535 | debuglogs (1, "monitor_detach ()"); |
7804e5bc | 536 | |
51d6a954 RS |
537 | pop_target(); /* calls monitor_close to do the real work */ |
538 | if (from_tty) | |
539 | printf ("Ending remote %s debugging\n", target_shortname); | |
540 | } | |
7804e5bc RS |
541 | |
542 | /* | |
543 | * monitor_attach -- attach GDB to the target. | |
544 | */ | |
545 | void | |
546 | monitor_attach (args, from_tty) | |
547 | char *args; | |
548 | int from_tty; | |
549 | { | |
550 | if (from_tty) | |
551 | printf ("Starting remote %s debugging\n", target_shortname); | |
51d6a954 | 552 | |
7a1330f7 | 553 | debuglogs (1, "monitor_attach (args=%s)", args); |
7804e5bc | 554 | |
7804e5bc RS |
555 | printf_monitor (GO_CMD); |
556 | /* swallow the echo. */ | |
557 | expect (GO_CMD, 1); | |
558 | } | |
559 | ||
51d6a954 | 560 | /* |
7804e5bc | 561 | * monitor_resume -- Tell the remote machine to resume. |
51d6a954 RS |
562 | */ |
563 | void | |
564 | monitor_resume (pid, step, sig) | |
565 | int pid, step; | |
566 | enum target_signal sig; | |
567 | { | |
7a1330f7 | 568 | debuglogs (1, "monitor_resume (step=%d, sig=%d)", step, sig); |
7804e5bc RS |
569 | |
570 | if (step) { | |
571 | printf_monitor (STEP_CMD); | |
7804e5bc RS |
572 | } else { |
573 | printf_monitor (CONT_CMD); | |
7804e5bc | 574 | } |
51d6a954 RS |
575 | } |
576 | ||
577 | /* | |
7a1330f7 | 578 | * monitor_wait -- Wait until the remote machine stops, then return, |
51d6a954 RS |
579 | * storing status in status just as `wait' would. |
580 | */ | |
51d6a954 RS |
581 | int |
582 | monitor_wait (pid, status) | |
583 | int pid; | |
584 | struct target_waitstatus *status; | |
585 | { | |
586 | int old_timeout = timeout; | |
51d6a954 | 587 | |
7a1330f7 | 588 | debuglogs(1, "monitor_wait (), printing extraneous text."); |
e6fa5bd6 | 589 | |
51d6a954 RS |
590 | status->kind = TARGET_WAITKIND_EXITED; |
591 | status->value.integer = 0; | |
592 | ||
593 | timeout = 0; /* Don't time out -- user program is running. */ | |
594 | ||
595 | expect_prompt(0); /* Wait for prompt, outputting extraneous text */ | |
7a1330f7 | 596 | debuglogs (4, "monitor_wait(), got the prompt."); |
51d6a954 RS |
597 | |
598 | status->kind = TARGET_WAITKIND_STOPPED; | |
599 | status->value.sig = TARGET_SIGNAL_TRAP; | |
600 | ||
601 | timeout = old_timeout; | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | /* Return the name of register number regno in the form input and output by | |
607 | monitor. Currently, register_names just happens to contain exactly what | |
608 | monitor wants. Lets take advantage of that just as long as possible! */ | |
609 | ||
610 | static char * | |
611 | get_reg_name (regno) | |
612 | int regno; | |
613 | { | |
614 | static char buf[50]; | |
615 | const char *p; | |
616 | char *b; | |
617 | ||
618 | b = buf; | |
619 | ||
620 | if (regno < 0) | |
621 | return (""); | |
622 | ||
623 | for (p = REGNAMES(regno); *p; p++) | |
624 | *b++ = tolower(*p); | |
625 | ||
626 | *b = '\000'; | |
627 | ||
e6fa5bd6 | 628 | debuglogs (5, "Got name \"%s\" from regno #%d.", buf, regno); |
f1ca4cbc | 629 | |
51d6a954 RS |
630 | return buf; |
631 | } | |
632 | ||
e6fa5bd6 RS |
633 | /* |
634 | * monitor_fetch_registers -- read the remote registers into the | |
635 | * block regs. | |
636 | */ | |
51d6a954 RS |
637 | void |
638 | monitor_fetch_registers () | |
639 | { | |
640 | int regno; | |
641 | ||
642 | /* yeah yeah, i know this is horribly inefficient. but it isn't done | |
643 | very often... i'll clean it up later. */ | |
644 | ||
645 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
646 | monitor_fetch_register(regno); | |
647 | } | |
648 | ||
649 | /* | |
f1ca4cbc RS |
650 | * monitor_fetch_register -- fetch register REGNO, or all registers if REGNO |
651 | * is -1. Returns errno value. | |
51d6a954 RS |
652 | */ |
653 | void | |
654 | monitor_fetch_register (regno) | |
655 | int regno; | |
656 | { | |
657 | int val, j; | |
658 | ||
7a1330f7 | 659 | debuglogs (1, "monitor_fetch_register (reg=%s)", get_reg_name (regno)); |
51d6a954 RS |
660 | |
661 | if (regno < 0) { | |
662 | monitor_fetch_registers (); | |
663 | } else { | |
664 | char *name = get_reg_name (regno); | |
665 | if (STREQ(name, "")) | |
666 | return; | |
667 | printf_monitor (ROMCMD(GET_REG), name); /* send the command */ | |
668 | expect (name, 1); /* then strip the leading garbage */ | |
669 | if (*ROMDELIM(GET_REG) != 0) { /* if there's a delimiter */ | |
670 | expect (ROMDELIM(GET_REG), 1); | |
671 | } | |
672 | ||
673 | val = get_hex_word(); /* get the value, ignore junk */ | |
674 | supply_register (regno, (char *) &val); | |
675 | ||
676 | if (*ROMDELIM(GET_REG) != 0) { | |
f1ca4cbc | 677 | /*** expect (ROMRES(GET_REG)); ***/ |
51d6a954 RS |
678 | printf_monitor (CMD_END); |
679 | } | |
680 | expect_prompt (1); | |
681 | } | |
682 | return; | |
683 | } | |
684 | ||
685 | /* Store the remote registers from the contents of the block REGS. */ | |
686 | ||
687 | void | |
688 | monitor_store_registers () | |
689 | { | |
690 | int regno; | |
691 | ||
e6fa5bd6 RS |
692 | debuglogs (1, "monitor_store_registers()"); |
693 | ||
51d6a954 RS |
694 | for (regno = 0; regno <= PC_REGNUM; regno++) |
695 | monitor_store_register(regno); | |
696 | ||
697 | registers_changed (); | |
698 | } | |
699 | ||
f1ca4cbc RS |
700 | /* |
701 | * monitor_store_register -- store register REGNO, or all if REGNO == 0. | |
702 | * return errno value. | |
703 | */ | |
51d6a954 RS |
704 | void |
705 | monitor_store_register (regno) | |
706 | int regno; | |
707 | { | |
708 | char *name; | |
f1ca4cbc RS |
709 | int i; |
710 | ||
711 | i = read_register(regno); | |
51d6a954 | 712 | |
e6fa5bd6 | 713 | debuglogs (1, "monitor_store_register (regno=%d)", regno); |
51d6a954 RS |
714 | |
715 | if (regno < 0) | |
716 | monitor_store_registers (); | |
717 | else { | |
e6fa5bd6 | 718 | debuglogs (3, "Setting register %s to 0x%x", get_reg_name (regno), read_register (regno)); |
51d6a954 RS |
719 | |
720 | name = get_reg_name (regno); | |
721 | if (STREQ(name, "")) | |
722 | return; | |
f1ca4cbc RS |
723 | printf_monitor (ROMCMD(SET_REG), name, read_register(regno)); |
724 | expect (name, 1); /* strip the leading garbage */ | |
51d6a954 RS |
725 | if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */ |
726 | expect (ROMDELIM(SET_REG), 1); | |
f1ca4cbc RS |
727 | get_hex_word(1); |
728 | printf_monitor ("%d%s\n", i, CMD_END); | |
51d6a954 RS |
729 | } |
730 | expect_prompt (1); | |
731 | } | |
732 | return; | |
733 | ||
734 | #if 0 | |
735 | printf_monitor (SET_REG, get_reg_name (regno), | |
736 | read_register (regno)); | |
737 | expect_prompt (1); | |
738 | } | |
739 | #endif | |
740 | } | |
741 | ||
742 | /* Get ready to modify the registers array. On machines which store | |
743 | individual registers, this doesn't need to do anything. On machines | |
744 | which store all the registers in one fell swoop, this makes sure | |
745 | that registers contains all the registers from the program being | |
746 | debugged. */ | |
747 | ||
748 | void | |
749 | monitor_prepare_to_store () | |
750 | { | |
751 | /* Do nothing, since we can store individual regs */ | |
752 | } | |
753 | ||
754 | void | |
755 | monitor_files_info () | |
756 | { | |
757 | printf ("\tAttached to %s at %d baud.\n", | |
758 | dev_name, baudrate); | |
759 | } | |
760 | ||
f1ca4cbc RS |
761 | /* |
762 | * monitor_write_inferior_memory -- Copy LEN bytes of data from debugger | |
763 | * memory at MYADDR to inferior's memory at MEMADDR. Returns length moved. | |
764 | */ | |
51d6a954 RS |
765 | int |
766 | monitor_write_inferior_memory (memaddr, myaddr, len) | |
767 | CORE_ADDR memaddr; | |
768 | unsigned char *myaddr; | |
769 | int len; | |
770 | { | |
771 | int i; | |
772 | char buf[10]; | |
773 | ||
e6fa5bd6 | 774 | debuglogs (1, "monitor_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
f1ca4cbc RS |
775 | |
776 | for (i = 0; i < len; i++) { | |
777 | printf_monitor (ROMCMD(SET_MEM), memaddr + i, myaddr[i] ); | |
778 | if (*ROMDELIM(SET_MEM) != 0) { /* if there's a delimiter */ | |
779 | expect (ROMDELIM(SET_MEM), 1); | |
51d6a954 RS |
780 | expect (CMD_DELIM); |
781 | printf_monitor ("%x", myaddr[i]); | |
51d6a954 | 782 | } |
f1ca4cbc RS |
783 | /*** printf_monitor ("%x", myaddr[i]); ***/ |
784 | if (sr_get_debug() > 1) | |
785 | printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]); | |
786 | if (*ROMDELIM(SET_MEM) != 0) { | |
787 | expect (CMD_DELIM); | |
788 | printf_monitor (CMD_END); | |
789 | } | |
790 | expect_prompt (1); | |
791 | } | |
51d6a954 RS |
792 | return len; |
793 | } | |
794 | ||
795 | /* | |
796 | * monitor_read_inferior_memory -- read LEN bytes from inferior memory | |
797 | * at MEMADDR. Put the result at debugger address MYADDR. Returns | |
798 | * length moved. | |
799 | */ | |
800 | int | |
801 | monitor_read_inferior_memory(memaddr, myaddr, len) | |
802 | CORE_ADDR memaddr; | |
803 | char *myaddr; | |
804 | int len; | |
805 | { | |
806 | int i, j; | |
807 | char buf[20]; | |
808 | ||
809 | /* Number of bytes read so far. */ | |
810 | int count; | |
811 | ||
812 | /* Starting address of this pass. */ | |
813 | unsigned long startaddr; | |
814 | ||
815 | /* Number of bytes to read in this pass. */ | |
816 | int len_this_pass; | |
817 | ||
e6fa5bd6 | 818 | debuglogs (1, "monitor_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
51d6a954 RS |
819 | |
820 | /* Note that this code works correctly if startaddr is just less | |
821 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
822 | thing). That is, something like | |
823 | monitor_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
824 | works--it never adds len To memaddr and gets 0. */ | |
825 | /* However, something like | |
826 | monitor_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
827 | doesn't need to work. Detect it and give up if there's an attempt | |
828 | to do that. */ | |
829 | if (((memaddr - 1) + len) < memaddr) { | |
830 | errno = EIO; | |
831 | return 0; | |
832 | } | |
833 | ||
834 | startaddr = memaddr; | |
835 | count = 0; | |
836 | while (count < len) { | |
837 | len_this_pass = 16; | |
838 | if ((startaddr % 16) != 0) | |
839 | len_this_pass -= startaddr % 16; | |
840 | if (len_this_pass > (len - count)) | |
841 | len_this_pass = (len - count); | |
e6fa5bd6 RS |
842 | |
843 | debuglogs (3, "Display %d bytes at %x", len_this_pass, startaddr); | |
51d6a954 RS |
844 | |
845 | for (i = 0; i < len_this_pass; i++) { | |
846 | printf_monitor (ROMCMD(GET_MEM), startaddr, startaddr); | |
847 | sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr); | |
51d6a954 RS |
848 | if (*ROMDELIM(GET_MEM) != 0) { /* if there's a delimiter */ |
849 | expect (ROMDELIM(GET_MEM), 1); | |
850 | } else { | |
851 | sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr); | |
852 | expect (buf,1); /* get the command echo */ | |
853 | get_hex_word(1); /* strip away the address */ | |
854 | } | |
855 | get_hex_byte (&myaddr[count++]); /* get the value at this address */ | |
856 | ||
857 | if (*ROMDELIM(GET_MEM) != 0) { | |
858 | printf_monitor (CMD_END); | |
859 | } | |
860 | expect_prompt (1); | |
861 | startaddr += 1; | |
862 | } | |
863 | } | |
864 | return len; | |
865 | } | |
866 | ||
867 | /* FIXME-someday! merge these two. */ | |
868 | int | |
869 | monitor_xfer_inferior_memory (memaddr, myaddr, len, write, target) | |
870 | CORE_ADDR memaddr; | |
871 | char *myaddr; | |
872 | int len; | |
873 | int write; | |
874 | struct target_ops *target; /* ignored */ | |
875 | { | |
876 | if (write) | |
877 | return monitor_write_inferior_memory (memaddr, myaddr, len); | |
878 | else | |
879 | return monitor_read_inferior_memory (memaddr, myaddr, len); | |
880 | } | |
881 | ||
882 | void | |
883 | monitor_kill (args, from_tty) | |
884 | char *args; | |
885 | int from_tty; | |
886 | { | |
887 | return; /* ignore attempts to kill target system */ | |
888 | } | |
889 | ||
890 | /* Clean up when a program exits. | |
891 | The program actually lives on in the remote processor's RAM, and may be | |
892 | run again without a download. Don't leave it full of breakpoint | |
893 | instructions. */ | |
894 | ||
895 | void | |
896 | monitor_mourn_inferior () | |
897 | { | |
898 | remove_breakpoints (); | |
899 | generic_mourn_inferior (); /* Do all the proper things now */ | |
900 | } | |
901 | ||
902 | #define MAX_MONITOR_BREAKPOINTS 16 | |
903 | ||
904 | extern int memory_breakpoint_size; | |
905 | static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = {0}; | |
906 | ||
907 | /* | |
908 | * monitor_insert_breakpoint -- add a breakpoint | |
909 | */ | |
910 | int | |
911 | monitor_insert_breakpoint (addr, shadow) | |
912 | CORE_ADDR addr; | |
913 | char *shadow; | |
914 | { | |
915 | int i; | |
916 | ||
e6fa5bd6 | 917 | debuglogs (1, "monitor_insert_breakpoint() addr = 0x%x", addr); |
f1ca4cbc RS |
918 | |
919 | for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) { | |
920 | if (breakaddr[i] == 0) { | |
921 | breakaddr[i] = addr; | |
922 | if (sr_get_debug() > 4) | |
923 | printf ("Breakpoint at %x\n", addr); | |
924 | monitor_read_inferior_memory(addr, shadow, memory_breakpoint_size); | |
925 | printf_monitor(SET_BREAK_CMD, addr); | |
926 | expect_prompt(1); | |
927 | return 0; | |
928 | } | |
929 | } | |
930 | ||
51d6a954 RS |
931 | fprintf(stderr, "Too many breakpoints (> 16) for monitor\n"); |
932 | return 1; | |
933 | } | |
934 | ||
935 | /* | |
936 | * _remove_breakpoint -- Tell the monitor to remove a breakpoint | |
937 | */ | |
938 | int | |
939 | monitor_remove_breakpoint (addr, shadow) | |
940 | CORE_ADDR addr; | |
941 | char *shadow; | |
942 | { | |
943 | int i; | |
944 | ||
e6fa5bd6 | 945 | debuglogs (1, "monitor_remove_breakpoint() addr = 0x%x", addr); |
7804e5bc RS |
946 | |
947 | for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) { | |
948 | if (breakaddr[i] == addr) { | |
949 | breakaddr[i] = 0; | |
950 | /* some monitors remove breakpoints based on the address */ | |
951 | if (CLR_BREAK_ADDR) | |
952 | printf_monitor(CLR_BREAK_CMD, addr); | |
953 | else | |
954 | printf_monitor(CLR_BREAK_CMD, i); | |
955 | expect_prompt(1); | |
956 | return 0; | |
957 | } | |
958 | } | |
51d6a954 RS |
959 | fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
960 | return 1; | |
961 | } | |
962 | ||
21ed3dcd RS |
963 | /* monitor_load -- load a file. This file determines which of the |
964 | * supported formats to use. The current types are: | |
965 | * FIXME: not all types supported yet. | |
966 | * default - reads any file using bfd and writes it to memory. | |
967 | * srec - reads binary file using bfd and writes it as an | |
968 | * ascii srecord. | |
969 | * xmodem-bin - reads a binary file using bfd, and downloads it | |
970 | * using xmodem protocol. | |
971 | * xmodem-srec - reads a binary file using bfd, and after converting | |
972 | * it downloads it as an srecord using xmodem protocol. | |
973 | * ascii-srec - reads a ascii srecord file and downloads it | |
974 | * without a change. | |
975 | * ascii-xmodem - reads a ascii file and downloads using xmodem | |
976 | * protocol. | |
977 | */ | |
978 | void | |
979 | monitor_load (file, fromtty) | |
980 | char *file; | |
981 | int fromtty; | |
982 | { | |
983 | FILE *download; | |
984 | int i, bytes_read; | |
985 | ||
986 | debuglogs (1, "Loading %s to monitor", file); | |
51d6a954 | 987 | |
21ed3dcd RS |
988 | if (STREQ (loadtype_str, "default")) { /* default, load a binary */ |
989 | gr_load_image (file, fromtty); /* by writing it into memory */ | |
990 | } | |
991 | ||
992 | if (STREQ (loadtype_str, "srec")) { /* load an srecord by converting */ | |
993 | monitor_load_srec(file, fromtty); /* if from a binary */ | |
994 | } | |
995 | ||
996 | if (STREQ (loadtype_str, "ascii-srec")) { /* load an srecord file */ | |
997 | monitor_load_ascii_srec(file, fromtty); /* if from a binary */ | |
998 | } | |
999 | ||
1000 | if (STREQ (loadtype_str, "xmodem-srec")) { /* load an srecord using the */ | |
1001 | error ("This protocol is not implemented yet."); /* xmodem protocol */ | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * monitor_load_ascii_srec -- download an ASCII srecord file. | |
1007 | */ | |
51d6a954 | 1008 | #define DOWNLOAD_LINE_SIZE 100 |
21ed3dcd RS |
1009 | int |
1010 | monitor_load_ascii_srec (file, fromtty) | |
1011 | char *file; | |
1012 | int fromtty; | |
51d6a954 RS |
1013 | { |
1014 | FILE *download; | |
1015 | char buf[DOWNLOAD_LINE_SIZE]; | |
1016 | int i, bytes_read; | |
1017 | ||
21ed3dcd | 1018 | debuglogs (1, "Loading an ASCII srecord file, %s.", file); |
51d6a954 | 1019 | |
21ed3dcd RS |
1020 | download = fopen (file, "r"); |
1021 | if (download == NULL) { | |
1022 | error ("%s Does not exist", file); | |
51d6a954 RS |
1023 | return; |
1024 | } | |
1025 | ||
1026 | printf_monitor (LOAD_CMD); | |
51d6a954 | 1027 | |
21ed3dcd RS |
1028 | while (!feof (download)) { |
1029 | bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download); | |
1030 | if (hashmark) { | |
1031 | putchar ('.'); | |
1032 | fflush (stdout); | |
51d6a954 | 1033 | } |
21ed3dcd RS |
1034 | if (SERIAL_WRITE(monitor_desc, buf, bytes_read)) { |
1035 | fprintf(stderr, "SERIAL_WRITE failed: (while downloading) %s\n", safe_strerror(errno)); | |
1036 | break; | |
1037 | } | |
1038 | i = 0; | |
1039 | while (i++ <=200) {} ; /* Ugly HACK, probably needs flow control */ | |
1040 | if (bytes_read < DOWNLOAD_LINE_SIZE) { | |
1041 | if (!feof (download)) | |
1042 | error ("Only read %d bytes\n", bytes_read); | |
1043 | break; | |
51d6a954 | 1044 | } |
21ed3dcd RS |
1045 | } |
1046 | ||
1047 | if (hashmark) { | |
1048 | putchar ('\n'); | |
1049 | } | |
51d6a954 RS |
1050 | if (!feof (download)) |
1051 | error ("Never got EOF while downloading"); | |
21ed3dcd | 1052 | expect_prompt(1); |
51d6a954 RS |
1053 | fclose (download); |
1054 | } | |
1055 | ||
7804e5bc RS |
1056 | /* |
1057 | * monitor_command -- put a command string, in args, out to MONITOR. | |
1058 | * Output from MONITOR is placed on the users terminal until the | |
1059 | * prompt is seen. FIXME: We read the charcters ourseleves here | |
1060 | * cause of a nasty echo. | |
1061 | */ | |
51d6a954 RS |
1062 | void |
1063 | monitor_command (args, fromtty) | |
1064 | char *args; | |
1065 | int fromtty; | |
1066 | { | |
7804e5bc RS |
1067 | |
1068 | char *p; | |
1069 | char c, cp; | |
1070 | p = PROMPT; | |
1071 | ||
e6fa5bd6 RS |
1072 | debuglogs (1, "monitor_command (args=%s)", args); |
1073 | ||
51d6a954 RS |
1074 | if (monitor_desc == NULL) |
1075 | error("monitor target not open."); | |
7804e5bc | 1076 | |
51d6a954 RS |
1077 | if (!args) |
1078 | error("Missing command."); | |
1079 | ||
7804e5bc RS |
1080 | printf_monitor ("%s\n", args); |
1081 | ||
51d6a954 RS |
1082 | expect_prompt(0); |
1083 | } | |
1084 | ||
21ed3dcd RS |
1085 | /* |
1086 | * monitor_load_srec -- download a binary file by converting it to srecords. | |
1087 | */ | |
1088 | static void | |
1089 | monitor_load_srec (args, fromtty) | |
1090 | char *args; | |
1091 | int fromtty; | |
1092 | { | |
1093 | bfd *abfd; | |
1094 | asection *s; | |
1095 | char buffer[1024]; | |
1096 | int srec_frame = SREC_SIZE; | |
1097 | ||
1098 | abfd = bfd_openr (args, 0); | |
1099 | if (!abfd) { | |
1100 | printf_filtered ("Unable to open file %s\n", args); | |
1101 | return; | |
1102 | } | |
1103 | ||
1104 | if (bfd_check_format (abfd, bfd_object) == 0) { | |
1105 | printf_filtered ("File is not an object file\n"); | |
1106 | return; | |
1107 | } | |
1108 | ||
1109 | s = abfd->sections; | |
1110 | while (s != (asection *) NULL) { | |
1111 | srec_frame = SREC_SIZE; | |
1112 | if (s->flags & SEC_LOAD) { | |
1113 | int i; | |
1114 | char *buffer = xmalloc (srec_frame); | |
1115 | printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, s->vma + s | |
1116 | ->_raw_size); | |
1117 | fflush (stdout); | |
1118 | for (i = 0; i < s->_raw_size; i += srec_frame) { | |
1119 | if (srec_frame > s->_raw_size - i) | |
1120 | srec_frame = s->_raw_size - i; | |
1121 | ||
1122 | bfd_get_section_contents (abfd, s, buffer, i, srec_frame); | |
1123 | monitor_write_srec (s->vma + i, buffer, srec_frame); | |
1124 | printf_filtered ("*"); | |
1125 | fflush (stdout); | |
1126 | } | |
1127 | printf_filtered ("\n"); | |
1128 | free (buffer); | |
1129 | } | |
1130 | s = s->next; | |
1131 | } | |
1132 | sprintf (buffer, "rs ip %lx", (unsigned long) abfd->start_address); | |
1133 | printf_monitor (buffer); | |
1134 | expect_prompt (); | |
1135 | } | |
1136 | ||
1137 | ||
1138 | static int | |
1139 | monitor_write_srec (memaddr, myaddr, len) | |
1140 | CORE_ADDR memaddr; | |
1141 | unsigned char *myaddr; | |
1142 | int len; | |
1143 | { | |
1144 | int done; | |
1145 | int checksum; | |
1146 | int x; | |
1147 | int retries; | |
1148 | int srec_bytes = 40; | |
1149 | int srec_max_retries = 3; | |
1150 | int srec_echo_pace = 0; | |
1151 | int srec_sleep = 0; | |
1152 | int srec_noise = 0; | |
1153 | char *buffer = alloca ((srec_bytes + 8) << 1); | |
1154 | ||
1155 | retries = 0; | |
1156 | ||
1157 | while (1) { /* FIXME !!! */ | |
1158 | done = 0; | |
1159 | ||
1160 | if (retries > srec_max_retries) | |
1161 | return(-1); | |
1162 | ||
1163 | if (retries > 0) { | |
1164 | if (sr_get_debug() > 0) | |
1165 | printf("\n<retrying...>\n"); | |
1166 | ||
1167 | /* This gr_expect_prompt call is extremely important. Without | |
1168 | it, we will tend to resend our packet so fast that it | |
1169 | will arrive before the bug monitor is ready to receive | |
1170 | it. This would lead to a very ugly resend loop. */ | |
1171 | ||
1172 | gr_expect_prompt(); | |
1173 | } | |
1174 | ||
1175 | /* FIXME: this is just start_load pasted in... */ | |
1176 | { char *command; | |
1177 | command = (srec_echo_pace ? "lo 0 ;x" : "lo 0"); | |
1178 | sr_write_cr (command); | |
1179 | sr_expect (command); | |
1180 | sr_expect ("\r\n"); | |
1181 | #if 0 | |
1182 | bug_srec_write_cr ("S0030000FC"); | |
1183 | #endif | |
1184 | } | |
1185 | /* end of hack */ | |
1186 | ||
1187 | while (done < len) { | |
1188 | int thisgo; | |
1189 | int idx; | |
1190 | char *buf = buffer; | |
1191 | CORE_ADDR address; | |
1192 | ||
1193 | checksum = 0; | |
1194 | thisgo = len - done; | |
1195 | if (thisgo > srec_bytes) | |
1196 | thisgo = srec_bytes; | |
1197 | ||
1198 | address = memaddr + done; | |
1199 | sprintf (buf, "S3%02X%08X", thisgo + 4 + 1, address); | |
1200 | buf += 12; | |
1201 | ||
1202 | checksum += (thisgo + 4 + 1 | |
1203 | + (address & 0xff) | |
1204 | + ((address >> 8) & 0xff) | |
1205 | + ((address >> 16) & 0xff) | |
1206 | + ((address >> 24) & 0xff)); | |
1207 | ||
1208 | for (idx = 0; idx < thisgo; idx++) { | |
1209 | sprintf (buf, "%02X", myaddr[idx + done]); | |
1210 | checksum += myaddr[idx + done]; | |
1211 | buf += 2; | |
1212 | } | |
1213 | ||
1214 | if (srec_noise > 0) { | |
1215 | /* FIXME-NOW: insert a deliberate error every now and then. | |
1216 | This is intended for testing/debugging the error handling | |
1217 | stuff. */ | |
1218 | static int counter = 0; | |
1219 | if (++counter > srec_noise) { | |
1220 | counter = 0; | |
1221 | ++checksum; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | sprintf(buf, "%02X", ~checksum & 0xff); | |
1226 | #if 0 | |
1227 | bug_srec_write_cr (buffer); | |
1228 | #endif | |
1229 | ||
1230 | if (srec_sleep != 0) | |
1231 | sleep(srec_sleep); | |
1232 | ||
1233 | /* This pollchar is probably redundant to the gr_multi_scan | |
1234 | below. Trouble is, we can't be sure when or where an | |
1235 | error message will appear. Apparently, when running at | |
1236 | full speed from a typical sun4, error messages tend to | |
1237 | appear to arrive only *after* the s7 record. */ | |
1238 | ||
1239 | if ((x = sr_pollchar()) != 0) { | |
1240 | if (sr_get_debug() > 0) | |
1241 | printf("\n<retrying...>\n"); | |
1242 | ||
1243 | ++retries; | |
1244 | ||
1245 | /* flush any remaining input and verify that we are back | |
1246 | at the prompt level. */ | |
1247 | gr_expect_prompt(); | |
1248 | /* start all over again. */ | |
1249 | /* FIXME: this is just start_load pasted in... */ | |
1250 | { char *command; | |
1251 | command = (srec_echo_pace ? "lo 0 ;x" : "lo 0"); | |
1252 | sr_write_cr (command); | |
1253 | sr_expect (command); | |
1254 | sr_expect ("\r\n"); | |
1255 | #if 0 | |
1256 | bug_srec_write_cr ("S0030000FC"); | |
1257 | #endif | |
1258 | } | |
1259 | /* end of hack */ | |
1260 | ||
1261 | done = 0; | |
1262 | continue; | |
1263 | } | |
1264 | ||
1265 | done += thisgo; | |
1266 | } | |
1267 | #if 0 | |
1268 | bug_srec_write_cr("S7060000000000F9"); | |
1269 | #endif | |
1270 | ++retries; | |
1271 | ||
1272 | /* Having finished the load, we need to figure out whether we | |
1273 | had any errors. */ | |
1274 | } | |
1275 | ||
1276 | return(0); | |
1277 | } | |
1278 | ||
51d6a954 RS |
1279 | /* |
1280 | * _initialize_remote_monitors -- setup a few addtitional commands that | |
1281 | * are usually only used by monitors. | |
1282 | */ | |
1283 | void | |
1284 | _initialize_remote_monitors () | |
1285 | { | |
1286 | struct cmd_list_element *c; | |
1287 | ||
1288 | /* this sets the type of download protocol */ | |
1289 | c = add_set_cmd ("loadtype", no_class, var_string, (char *)&loadtype_str, | |
1290 | "Set the type of the remote load protocol.\n", &setlist); | |
1291 | c->function.sfunc = set_loadtype_command; | |
1292 | add_show_from_set (c, &showlist); | |
21ed3dcd | 1293 | loadtype_str = savestring ("default", 8); |
51d6a954 RS |
1294 | |
1295 | add_show_from_set (add_set_cmd ("hash", no_class, var_boolean, | |
1296 | (char *)&hashmark, | |
1297 | "Set display of activity while downloading a file.\n\ | |
1298 | When enabled, a period \'.\' is displayed.", | |
1299 | &setlist), | |
1300 | &showlist); | |
1301 | ||
1302 | /* generic monitor command */ | |
1303 | add_com ("monitor", class_obscure, monitor_command, | |
1304 | "Send a command to the debug monitor."); | |
1305 | } |