Commit | Line | Data |
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1f46923f | 1 | /* Remote debugging interface for Hitachi HMS Monitor Version 1.0 |
fa4b55a1 SC |
2 | |
3 | Copyright 1992 Free Software Foundation, Inc. | |
4 | ||
5 | Contributed by Steve Chamberlain sac@cygnus.com | |
6 | ||
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
23 | ||
24 | ||
25 | ||
26 | #include <stdio.h> | |
27 | #include <string.h> | |
28 | #include "defs.h" | |
29 | #include "inferior.h" | |
30 | #include "wait.h" | |
31 | #include "value.h" | |
32 | #include <ctype.h> | |
33 | #include <fcntl.h> | |
34 | #include <signal.h> | |
35 | #include <setjmp.h> | |
36 | #include <errno.h> | |
37 | #include "terminal.h" | |
38 | #include "target.h" | |
39 | #include "gdbcore.h" | |
40 | ||
41 | /* External data declarations */ | |
42 | extern int stop_soon_quietly; /* for wait_for_inferior */ | |
43 | ||
44 | /* External function declarations */ | |
45 | extern struct value *call_function_by_hand(); | |
46 | ||
47 | /* Forward data declarations */ | |
48 | extern struct target_ops hms_ops; /* Forward declaration */ | |
49 | ||
50 | /* Forward function declarations */ | |
51 | static void hms_fetch_registers (); | |
52 | static int hms_store_registers (); | |
53 | static void hms_close (); | |
54 | static int hms_clear_breakpoints(); | |
55 | ||
56 | extern struct target_ops hms_ops; | |
57 | ||
1f46923f SC |
58 | static int quiet = 1; |
59 | ||
fa4b55a1 | 60 | #ifdef DEBUG |
1f46923f SC |
61 | # define DENTER(NAME) if (!quiet) (printf_filtered("Entering %s\n",NAME), fflush(stdout)) |
62 | # define DEXIT(NAME) if (!quiet) (printf_filtered("Exiting %s\n",NAME), fflush(stdout)) | |
fa4b55a1 SC |
63 | #else |
64 | # define DENTER(NAME) | |
65 | # define DEXIT(NAME) | |
66 | #endif | |
67 | ||
68 | ||
1f46923f SC |
69 | /***********************************************************************/ |
70 | /* Caching stuff stolen from remote-nindy.c */ | |
71 | ||
72 | /* The data cache records all the data read from the remote machine | |
73 | since the last time it stopped. | |
74 | ||
75 | Each cache block holds LINE_SIZE bytes of data | |
76 | starting at a multiple-of-LINE_SIZE address. */ | |
77 | ||
78 | ||
79 | #define LINE_SIZE_POWER 4 | |
80 | #define LINE_SIZE (1<<LINE_SIZE_POWER) /* eg 1<<3 == 8 */ | |
81 | #define LINE_SIZE_MASK ((LINE_SIZE-1)) /* eg 7*2+1= 111*/ | |
82 | #define DCACHE_SIZE 64 /* Number of cache blocks */ | |
83 | #define XFORM(x) ((x&LINE_SIZE_MASK)>>2) | |
84 | struct dcache_block { | |
85 | struct dcache_block *next, *last; | |
86 | unsigned int addr; /* Address for which data is recorded. */ | |
87 | int data[LINE_SIZE/sizeof(int)]; | |
88 | }; | |
89 | ||
90 | struct dcache_block dcache_free, dcache_valid; | |
91 | ||
92 | /* Free all the data cache blocks, thus discarding all cached data. */ | |
93 | static | |
94 | void | |
95 | dcache_flush () | |
96 | { | |
97 | register struct dcache_block *db; | |
98 | ||
99 | while ((db = dcache_valid.next) != &dcache_valid) | |
100 | { | |
101 | remque (db); | |
102 | insque (db, &dcache_free); | |
103 | } | |
104 | } | |
105 | ||
106 | /* | |
107 | * If addr is present in the dcache, return the address of the block | |
108 | * containing it. | |
109 | */ | |
110 | static | |
111 | struct dcache_block * | |
112 | dcache_hit (addr) | |
113 | unsigned int addr; | |
114 | { | |
115 | register struct dcache_block *db; | |
116 | ||
117 | if (addr & 3) | |
118 | abort (); | |
119 | ||
120 | /* Search all cache blocks for one that is at this address. */ | |
121 | db = dcache_valid.next; | |
122 | while (db != &dcache_valid) | |
123 | { | |
124 | if ((addr & ~LINE_SIZE_MASK)== db->addr) | |
125 | return db; | |
126 | db = db->next; | |
127 | } | |
128 | return NULL; | |
129 | } | |
130 | ||
131 | /* Return the int data at address ADDR in dcache block DC. */ | |
132 | static | |
133 | int | |
134 | dcache_value (db, addr) | |
135 | struct dcache_block *db; | |
136 | unsigned int addr; | |
137 | { | |
138 | if (addr & 3) | |
139 | abort (); | |
140 | return (db->data[XFORM(addr)]); | |
141 | } | |
142 | ||
143 | /* Get a free cache block, put or keep it on the valid list, | |
144 | and return its address. The caller should store into the block | |
145 | the address and data that it describes, then remque it from the | |
146 | free list and insert it into the valid list. This procedure | |
147 | prevents errors from creeping in if a ninMemGet is interrupted | |
148 | (which used to put garbage blocks in the valid list...). */ | |
149 | static | |
150 | struct dcache_block * | |
151 | dcache_alloc () | |
152 | { | |
153 | register struct dcache_block *db; | |
154 | ||
155 | if ((db = dcache_free.next) == &dcache_free) | |
156 | { | |
157 | /* If we can't get one from the free list, take last valid and put | |
158 | it on the free list. */ | |
159 | db = dcache_valid.last; | |
160 | remque (db); | |
161 | insque (db, &dcache_free); | |
162 | } | |
163 | ||
164 | remque (db); | |
165 | insque (db, &dcache_valid); | |
166 | return (db); | |
167 | } | |
168 | ||
169 | /* Return the contents of the word at address ADDR in the remote machine, | |
170 | using the data cache. */ | |
171 | static | |
172 | int | |
173 | dcache_fetch (addr) | |
174 | CORE_ADDR addr; | |
175 | { | |
176 | register struct dcache_block *db; | |
177 | ||
178 | db = dcache_hit (addr); | |
179 | if (db == 0) | |
180 | { | |
181 | db = dcache_alloc (); | |
182 | immediate_quit++; | |
183 | hms_read_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE); | |
184 | immediate_quit--; | |
185 | db->addr = addr & ~LINE_SIZE_MASK; | |
186 | remque (db); /* Off the free list */ | |
187 | insque (db, &dcache_valid); /* On the valid list */ | |
188 | } | |
189 | return (dcache_value (db, addr)); | |
190 | } | |
191 | ||
192 | /* Write the word at ADDR both in the data cache and in the remote machine. */ | |
193 | static void | |
194 | dcache_poke (addr, data) | |
195 | CORE_ADDR addr; | |
196 | int data; | |
197 | { | |
198 | register struct dcache_block *db; | |
199 | ||
200 | /* First make sure the word is IN the cache. DB is its cache block. */ | |
201 | db = dcache_hit (addr); | |
202 | if (db == 0) | |
203 | { | |
204 | db = dcache_alloc (); | |
205 | immediate_quit++; | |
206 | hms_write_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE); | |
207 | immediate_quit--; | |
208 | db->addr = addr & ~LINE_SIZE_MASK; | |
209 | remque (db); /* Off the free list */ | |
210 | insque (db, &dcache_valid); /* On the valid list */ | |
211 | } | |
212 | ||
213 | /* Modify the word in the cache. */ | |
214 | db->data[XFORM(addr)] = data; | |
215 | ||
216 | /* Send the changed word. */ | |
217 | immediate_quit++; | |
218 | hms_write_inferior_memory(addr, (unsigned char *)&data, 4); | |
219 | immediate_quit--; | |
220 | } | |
221 | ||
222 | /* The cache itself. */ | |
223 | struct dcache_block the_cache[DCACHE_SIZE]; | |
224 | ||
225 | /* Initialize the data cache. */ | |
226 | static void | |
227 | dcache_init () | |
228 | { | |
229 | register i; | |
230 | register struct dcache_block *db; | |
231 | ||
232 | db = the_cache; | |
233 | dcache_free.next = dcache_free.last = &dcache_free; | |
234 | dcache_valid.next = dcache_valid.last = &dcache_valid; | |
235 | for (i=0;i<DCACHE_SIZE;i++,db++) | |
236 | insque (db, &dcache_free); | |
237 | } | |
fa4b55a1 | 238 | |
1f46923f SC |
239 | |
240 | /*********************************************************************** | |
241 | * I/O stuff stolen from remote-eb.c | |
242 | ***********************************************************************/ | |
243 | ||
244 | static int timeout = 2; | |
fa4b55a1 SC |
245 | static char *dev_name = "/dev/ttya"; |
246 | ||
247 | ||
1f46923f | 248 | |
fa4b55a1 SC |
249 | |
250 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that | |
251 | hms_open knows that we don't have a file open when the program | |
252 | starts. */ | |
253 | int hms_desc = -1; | |
254 | #define OPEN(x) ((x) >= 0) | |
255 | ||
256 | ||
1f46923f SC |
257 | void hms_open(); |
258 | ||
fa4b55a1 SC |
259 | #define ON 1 |
260 | #define OFF 0 | |
261 | static void | |
262 | rawmode(desc, turnon) | |
263 | int desc; | |
264 | int turnon; | |
265 | { | |
266 | TERMINAL sg; | |
267 | ||
268 | if (desc < 0) | |
269 | return; | |
270 | ||
271 | ioctl (desc, TIOCGETP, &sg); | |
272 | ||
273 | if (turnon) { | |
274 | #ifdef HAVE_TERMIO | |
275 | sg.c_lflag &= ~(ICANON); | |
276 | #else | |
277 | sg.sg_flags |= RAW; | |
278 | #endif | |
279 | } else { | |
280 | #ifdef HAVE_TERMIO | |
281 | sg.c_lflag |= ICANON; | |
282 | #else | |
283 | sg.sg_flags &= ~(RAW); | |
284 | #endif | |
285 | } | |
286 | ioctl (desc, TIOCSETP, &sg); | |
287 | } | |
288 | ||
1f46923f SC |
289 | |
290 | /* Read a character from the remote system, doing all the fancy | |
291 | timeout stuff. */ | |
292 | static int | |
293 | readchar () | |
fa4b55a1 | 294 | { |
1f46923f | 295 | char buf; |
fa4b55a1 | 296 | |
1f46923f | 297 | buf = '\0'; |
fa4b55a1 SC |
298 | #ifdef HAVE_TERMIO |
299 | /* termio does the timeout for us. */ | |
1f46923f | 300 | read (hms_desc, &buf, 1); |
fa4b55a1 SC |
301 | #else |
302 | alarm (timeout); | |
1f46923f SC |
303 | if (read (hms_desc, &buf, 1) < 0) |
304 | { | |
305 | if (errno == EINTR) | |
306 | error ("Timeout reading from remote system."); | |
307 | else | |
308 | perror_with_name ("remote"); | |
309 | } | |
fa4b55a1 SC |
310 | alarm (0); |
311 | #endif | |
1f46923f SC |
312 | |
313 | if (buf == '\0') | |
314 | error ("Timeout reading from remote system."); | |
315 | ||
316 | if (!quiet) | |
317 | printf("%c",buf); | |
318 | ||
319 | return buf & 0x7f; | |
fa4b55a1 SC |
320 | } |
321 | ||
fa4b55a1 | 322 | static int |
1f46923f | 323 | readchar_nofail () |
fa4b55a1 SC |
324 | { |
325 | char buf; | |
326 | ||
327 | buf = '\0'; | |
328 | #ifdef HAVE_TERMIO | |
329 | /* termio does the timeout for us. */ | |
330 | read (hms_desc, &buf, 1); | |
331 | #else | |
332 | alarm (timeout); | |
333 | if (read (hms_desc, &buf, 1) < 0) | |
1f46923f SC |
334 | { |
335 | return 0; | |
336 | } | |
fa4b55a1 SC |
337 | alarm (0); |
338 | #endif | |
339 | ||
1f46923f SC |
340 | if (buf == '\0') |
341 | { | |
342 | return 0; | |
343 | } | |
fa4b55a1 SC |
344 | return buf & 0x7f; |
345 | } | |
346 | ||
347 | /* Keep discarding input from the remote system, until STRING is found. | |
348 | Let the user break out immediately. */ | |
349 | static void | |
350 | expect (string) | |
351 | char *string; | |
352 | { | |
353 | char *p = string; | |
354 | ||
355 | ||
356 | immediate_quit = 1; | |
357 | while (1) | |
358 | { | |
359 | if (readchar() == *p) | |
360 | { | |
361 | p++; | |
362 | if (*p == '\0') | |
363 | { | |
364 | immediate_quit = 0; | |
365 | return; | |
366 | } | |
367 | } | |
368 | else | |
369 | p = string; | |
370 | } | |
371 | } | |
372 | ||
373 | /* Keep discarding input until we see the hms prompt. | |
374 | ||
375 | The convention for dealing with the prompt is that you | |
376 | o give your command | |
377 | o *then* wait for the prompt. | |
378 | ||
379 | Thus the last thing that a procedure does with the serial line | |
380 | will be an expect_prompt(). Exception: hms_resume does not | |
381 | wait for the prompt, because the terminal is being handed over | |
382 | to the inferior. However, the next thing which happens after that | |
383 | is a hms_wait which does wait for the prompt. | |
384 | Note that this includes abnormal exit, e.g. error(). This is | |
385 | necessary to prevent getting into states from which we can't | |
386 | recover. */ | |
387 | static void | |
388 | expect_prompt () | |
389 | { | |
390 | ||
391 | expect ("HMS>"); | |
392 | } | |
393 | ||
394 | /* Get a hex digit from the remote system & return its value. | |
395 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ | |
396 | static int | |
397 | get_hex_digit (ignore_space) | |
398 | int ignore_space; | |
399 | { | |
400 | int ch; | |
401 | while (1) | |
402 | { | |
403 | ch = readchar (); | |
404 | if (ch >= '0' && ch <= '9') | |
405 | return ch - '0'; | |
406 | else if (ch >= 'A' && ch <= 'F') | |
407 | return ch - 'A' + 10; | |
408 | else if (ch >= 'a' && ch <= 'f') | |
409 | return ch - 'a' + 10; | |
410 | else if (ch == ' ' && ignore_space) | |
411 | ; | |
412 | else | |
413 | { | |
414 | expect_prompt (); | |
415 | error ("Invalid hex digit from remote system."); | |
416 | } | |
417 | } | |
418 | } | |
419 | ||
420 | /* Get a byte from hms_desc and put it in *BYT. Accept any number | |
421 | leading spaces. */ | |
422 | static void | |
423 | get_hex_byte (byt) | |
424 | char *byt; | |
425 | { | |
426 | int val; | |
427 | ||
428 | val = get_hex_digit (1) << 4; | |
429 | val |= get_hex_digit (0); | |
430 | *byt = val; | |
431 | } | |
432 | ||
433 | /* Read a 32-bit hex word from the hms, preceded by a space */ | |
434 | static long | |
435 | get_hex_word() | |
436 | { | |
437 | long val; | |
438 | int j; | |
439 | ||
440 | val = 0; | |
441 | for (j = 0; j < 8; j++) | |
442 | val = (val << 4) + get_hex_digit (j == 0); | |
443 | return val; | |
444 | } | |
445 | /* Called when SIGALRM signal sent due to alarm() timeout. */ | |
446 | #ifndef HAVE_TERMIO | |
447 | ||
448 | #ifndef __STDC__ | |
449 | # ifndef volatile | |
450 | # define volatile /**/ | |
451 | # endif | |
452 | #endif | |
453 | volatile int n_alarms; | |
454 | ||
455 | void | |
456 | hms_timer () | |
457 | { | |
fa4b55a1 SC |
458 | n_alarms++; |
459 | } | |
460 | #endif | |
461 | ||
fa4b55a1 SC |
462 | |
463 | /* Number of SIGTRAPs we need to simulate. That is, the next | |
464 | NEED_ARTIFICIAL_TRAP calls to hms_wait should just return | |
465 | SIGTRAP without actually waiting for anything. */ | |
466 | ||
467 | static int need_artificial_trap = 0; | |
468 | ||
469 | void | |
470 | hms_kill(arg,from_tty) | |
471 | char *arg; | |
472 | int from_tty; | |
473 | { | |
fa4b55a1 | 474 | |
fa4b55a1 | 475 | } |
1f46923f SC |
476 | |
477 | static check_open() | |
478 | { | |
479 | if (!OPEN(hms_desc)) { | |
480 | hms_open("",0); | |
481 | } | |
482 | } | |
483 | ||
fa4b55a1 SC |
484 | /* |
485 | * Download a file specified in 'args', to the hms. | |
486 | */ | |
487 | static void | |
488 | hms_load(args,fromtty) | |
489 | char *args; | |
490 | int fromtty; | |
491 | { | |
492 | bfd *abfd; | |
493 | asection *s; | |
494 | int n; | |
495 | char buffer[1024]; | |
496 | ||
497 | DENTER("hms_load()"); | |
1f46923f SC |
498 | check_open(); |
499 | ||
500 | dcache_flush(); | |
501 | inferior_pid = 0; | |
fa4b55a1 SC |
502 | abfd = bfd_openr(args,"coff-h8300"); |
503 | if (!abfd) | |
504 | { | |
1f46923f | 505 | printf_filtered("Unable to open file %s\n", args); |
fa4b55a1 SC |
506 | return; |
507 | } | |
508 | ||
509 | if (bfd_check_format(abfd, bfd_object) ==0) | |
510 | { | |
511 | printf_filtered("File is not an object file\n"); | |
512 | return ; | |
513 | } | |
514 | ||
515 | s = abfd->sections; | |
516 | while (s != (asection *)NULL) | |
517 | { | |
518 | if (s->flags & SEC_LOAD) | |
519 | { | |
520 | char *buffer = xmalloc(s->_raw_size); | |
521 | bfd_get_section_contents(abfd, s, buffer, 0, s->_raw_size); | |
522 | ||
523 | hms_write_inferior_memory(s->vma, buffer, s->_raw_size); | |
524 | free(buffer); | |
525 | } | |
526 | s = s->next; | |
527 | } | |
528 | ||
529 | DEXIT("hms_load()"); | |
530 | } | |
531 | ||
532 | /* This is called not only when we first attach, but also when the | |
533 | user types "run" after having attached. */ | |
534 | void | |
535 | hms_create_inferior (execfile, args, env) | |
536 | char *execfile; | |
537 | char *args; | |
538 | char **env; | |
539 | { | |
540 | int entry_pt; | |
541 | ||
542 | DENTER("hms_create_inferior()"); | |
543 | ||
544 | if (args && *args) | |
545 | error ("Can't pass arguments to remote hms process."); | |
546 | ||
547 | if (execfile == 0 || exec_bfd == 0) | |
548 | error ("No exec file specified"); | |
549 | ||
550 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
1f46923f SC |
551 | check_open(); |
552 | ||
fa4b55a1 SC |
553 | if (OPEN(hms_desc)) |
554 | { | |
555 | ||
556 | hms_kill(NULL,NULL); | |
557 | hms_clear_breakpoints(); | |
558 | init_wait_for_inferior (); | |
559 | /* Clear the input because what the hms sends back is different | |
560 | * depending on whether it was running or not. | |
561 | */ | |
1f46923f | 562 | |
fa4b55a1 SC |
563 | hms_write_cr("r"); |
564 | ||
565 | expect_prompt(); | |
fa4b55a1 SC |
566 | |
567 | ||
568 | insert_breakpoints (); /* Needed to get correct instruction in cache */ | |
569 | proceed(entry_pt, -1, 0); | |
570 | ||
571 | ||
1f46923f | 572 | } |
fa4b55a1 SC |
573 | DEXIT("hms_create_inferior()"); |
574 | } | |
575 | ||
576 | /* Translate baud rates from integers to damn B_codes. Unix should | |
577 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ | |
578 | ||
579 | #ifndef B19200 | |
580 | #define B19200 EXTA | |
581 | #endif | |
582 | #ifndef B38400 | |
583 | #define B38400 EXTB | |
584 | #endif | |
585 | ||
586 | static struct {int rate, damn_b;} baudtab[] = { | |
1f46923f SC |
587 | {9600, B9600}, |
588 | {19200, B19200}, | |
fa4b55a1 | 589 | {300, B300}, |
fa4b55a1 | 590 | {1200, B1200}, |
fa4b55a1 SC |
591 | {2400, B2400}, |
592 | {4800, B4800}, | |
fa4b55a1 SC |
593 | {-1, -1}, |
594 | }; | |
595 | ||
596 | static int damn_b (rate) | |
597 | int rate; | |
598 | { | |
599 | int i; | |
600 | ||
601 | for (i = 0; baudtab[i].rate != -1; i++) | |
602 | if (rate == baudtab[i].rate) return baudtab[i].damn_b; | |
1f46923f | 603 | return B19200; |
fa4b55a1 SC |
604 | } |
605 | ||
606 | ||
607 | /* Open a connection to a remote debugger. | |
608 | NAME is the filename used for communication, then a space, | |
609 | then the baud rate. | |
610 | */ | |
611 | ||
612 | static char * | |
613 | find_end_of_word(s) | |
614 | char *s; | |
615 | { | |
616 | while (*s && !isspace(*s)) | |
617 | s++; | |
618 | return s; | |
619 | } | |
620 | ||
621 | static char *get_word(p) | |
622 | char **p; | |
623 | { | |
624 | char *s = *p; | |
625 | char *word ; | |
626 | char *copy; | |
627 | size_t len; | |
628 | ||
629 | while (isspace(*s)) | |
630 | s++; | |
631 | ||
632 | word = s; | |
633 | ||
634 | len = 0; | |
635 | ||
636 | while (*s && !isspace(*s)) | |
637 | { | |
638 | s++; | |
639 | len++; | |
640 | ||
641 | } | |
642 | copy = xmalloc(len+1); | |
643 | memcpy(copy, word, len); | |
644 | copy[len] = 0; | |
645 | *p = s; | |
646 | return copy; | |
647 | } | |
648 | ||
649 | static int baudrate = 9600; | |
1f46923f SC |
650 | |
651 | static int | |
652 | is_baudrate_right() | |
653 | { | |
654 | ||
655 | ||
656 | /* Put this port into NORMAL mode, send the 'normal' character */ | |
657 | hms_write("\001", 1); /* Control A */ | |
658 | hms_write("\r", 1); /* Cr */ | |
659 | ||
660 | while ( readchar_nofail()) /* Skip noise we put there */ | |
661 | ; | |
662 | ||
663 | hms_write("r"); | |
664 | if (readchar_nofail() == 'r') | |
665 | return 1; | |
666 | ||
667 | /* Not the right baudrate, or the board's not on */ | |
668 | return 0; | |
669 | ||
670 | ||
671 | } | |
672 | static void | |
673 | set_rate() | |
674 | { | |
675 | TERMINAL sg; | |
676 | ioctl (hms_desc, TIOCGETP, &sg); | |
677 | #ifdef HAVE_TERMIO | |
678 | sg.c_cc[VMIN] = 0; /* read with timeout. */ | |
679 | sg.c_cc[VTIME] = timeout * 10; | |
680 | sg.c_lflag &= ~(ICANON | ECHO); | |
681 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); | |
682 | #else | |
683 | sg.sg_ispeed = damn_b (baudrate); | |
684 | sg.sg_ospeed = damn_b (baudrate); | |
685 | sg.sg_flags |= RAW | ANYP; | |
686 | sg.sg_flags &= ~ECHO; | |
687 | #endif | |
688 | ||
689 | ioctl (hms_desc, TIOCSETP, &sg); | |
690 | } | |
691 | ||
692 | static void | |
693 | get_baudrate_right() | |
694 | { | |
695 | ||
696 | int which_rate = 0; | |
697 | ||
698 | while (!is_baudrate_right()) | |
699 | { | |
700 | if (baudtab[which_rate].rate == -1) | |
701 | { | |
702 | which_rate = 0; | |
703 | } | |
704 | else | |
705 | { | |
706 | which_rate++; | |
707 | } | |
708 | ||
709 | baudrate = baudtab[which_rate].rate; | |
710 | printf_filtered("Board not responding, trying %d baud\n",baudrate); | |
711 | QUIT; | |
712 | set_rate(); | |
713 | } | |
714 | } | |
715 | ||
fa4b55a1 SC |
716 | static void |
717 | hms_open (name, from_tty) | |
718 | char *name; | |
719 | int from_tty; | |
720 | { | |
1f46923f | 721 | |
fa4b55a1 SC |
722 | unsigned int prl; |
723 | char *p; | |
724 | ||
725 | DENTER("hms_open()"); | |
726 | if(name == 0) | |
727 | { | |
728 | name = ""; | |
729 | ||
730 | } | |
731 | ||
fa4b55a1 SC |
732 | hms_close (0); |
733 | ||
734 | hms_desc = open (dev_name, O_RDWR); | |
735 | if (hms_desc < 0) | |
736 | perror_with_name (dev_name); | |
fa4b55a1 | 737 | |
1f46923f SC |
738 | set_rate(); |
739 | ||
740 | dcache_init(); | |
fa4b55a1 SC |
741 | |
742 | ||
fa4b55a1 SC |
743 | /* start_remote (); /* Initialize gdb process mechanisms */ |
744 | ||
745 | ||
746 | #ifndef HAVE_TERMIO | |
747 | #ifndef NO_SIGINTERRUPT | |
748 | /* Cause SIGALRM's to make reads fail with EINTR instead of resuming | |
749 | the read. */ | |
750 | if (siginterrupt (SIGALRM, 1) != 0) | |
751 | perror ("hms_open: error in siginterrupt"); | |
752 | #endif | |
753 | ||
754 | /* Set up read timeout timer. */ | |
755 | if ((void (*)) signal (SIGALRM, hms_timer) == (void (*)) -1) | |
756 | perror ("hms_open: error in signal"); | |
757 | #endif | |
758 | ||
1f46923f | 759 | get_baudrate_right(); |
fa4b55a1 SC |
760 | |
761 | /* Hello? Are you there? */ | |
762 | write (hms_desc, "\r", 1); | |
763 | ||
764 | expect_prompt (); | |
765 | ||
766 | /* Clear any break points */ | |
767 | hms_clear_breakpoints(); | |
768 | ||
769 | ||
1f46923f | 770 | printf_filtered("Remote debugging on an H8/300 HMS via %s.\n",dev_name); |
fa4b55a1 SC |
771 | |
772 | DEXIT("hms_open()"); | |
773 | } | |
774 | ||
775 | /* Close out all files and local state before this target loses control. */ | |
776 | ||
777 | static void | |
778 | hms_close (quitting) | |
779 | int quitting; | |
780 | { | |
781 | ||
782 | DENTER("hms_close()"); | |
783 | ||
784 | /* Clear any break points */ | |
785 | hms_clear_breakpoints(); | |
786 | ||
787 | /* Put this port back into REMOTE mode */ | |
788 | if (OPEN(hms_desc)) { | |
789 | ||
790 | sleep(1); /* Let any output make it all the way back */ | |
791 | write(hms_desc, "R\r", 2); | |
792 | } | |
793 | ||
794 | /* Due to a bug in Unix, fclose closes not only the stdio stream, | |
795 | but also the file descriptor. So we don't actually close | |
796 | hms_desc. */ | |
797 | if (OPEN(hms_desc)) | |
798 | close (hms_desc); | |
799 | ||
800 | /* Do not try to close hms_desc again, later in the program. */ | |
801 | ||
802 | hms_desc = -1; | |
803 | ||
804 | DEXIT("hms_close()"); | |
805 | } | |
806 | ||
807 | /* Attach to the target that is already loaded and possibly running */ | |
808 | static void | |
809 | hms_attach (args, from_tty) | |
810 | char *args; | |
811 | int from_tty; | |
812 | { | |
813 | ||
814 | DENTER("hms_attach()"); | |
fa4b55a1 SC |
815 | |
816 | /* push_target(&hms_ops); /* This done in hms_open() */ | |
817 | ||
818 | mark_breakpoints_out (); | |
819 | ||
820 | /* Send the hms a kill. It is ok if it is not already running */ | |
821 | #if 0 | |
822 | fprintf(hms_stream, "K\r"); | |
823 | expect_prompt(); /* Slurp the echo */ | |
824 | #endif | |
825 | /* We will get a task spawn event immediately. */ | |
826 | init_wait_for_inferior (); | |
827 | clear_proceed_status (); | |
828 | stop_soon_quietly = 1; | |
829 | wait_for_inferior (); | |
830 | stop_soon_quietly = 0; | |
831 | normal_stop (); | |
832 | DEXIT("hms_attach()"); | |
833 | } | |
834 | ||
835 | ||
836 | /* Terminate the open connection to the remote debugger. | |
837 | Use this when you want to detach and do something else | |
838 | with your gdb. */ | |
839 | void | |
840 | hms_detach (args,from_tty) | |
841 | char *args; | |
842 | int from_tty; | |
843 | { | |
844 | DENTER("hms_detach()"); | |
845 | if (OPEN(hms_desc)) { /* Send it on its way (tell it to continue) */ | |
846 | hms_clear_breakpoints(); | |
847 | #if 0 | |
848 | fprintf(hms_stream,"G\r"); | |
849 | #endif | |
850 | } | |
851 | ||
852 | pop_target(); /* calls hms_close to do the real work */ | |
853 | if (from_tty) | |
854 | printf_filtered ("Ending remote %s debugging\n", target_shortname); | |
855 | DEXIT("hms_detach()"); | |
856 | } | |
857 | ||
858 | /* Tell the remote machine to resume. */ | |
859 | ||
860 | void | |
861 | hms_resume (step, sig) | |
862 | int step, sig; | |
863 | { | |
864 | DENTER("hms_resume()"); | |
1f46923f SC |
865 | dcache_flush(); |
866 | ||
fa4b55a1 SC |
867 | if (step) |
868 | { | |
869 | hms_write_cr("s"); | |
870 | ||
871 | hms_write("\003",1); | |
872 | expect_prompt(); | |
873 | /* Force the next hms_wait to return a trap. Not doing anything | |
874 | about I/O from the target means that the user has to type | |
875 | "continue" to see any. FIXME, this should be fixed. */ | |
876 | need_artificial_trap = 1; | |
877 | } | |
878 | else | |
879 | { | |
880 | hms_write_cr("g"); | |
881 | expect("g\r"); | |
882 | } | |
883 | DEXIT("hms_resume()"); | |
884 | } | |
885 | ||
886 | /* Wait until the remote machine stops, then return, | |
887 | storing status in STATUS just as `wait' would. */ | |
888 | ||
889 | int | |
890 | hms_wait (status) | |
891 | WAITTYPE *status; | |
892 | { | |
893 | /* Strings to look for. '?' means match any single character. | |
894 | Note that with the algorithm we use, the initial character | |
895 | of the string cannot recur in the string, or we will not | |
896 | find some cases of the string in the input. */ | |
897 | ||
1f46923f | 898 | static char bpt[] = "At breakpoint:\r"; |
fa4b55a1 SC |
899 | /* It would be tempting to look for "\n[__exit + 0x8]\n" |
900 | but that requires loading symbols with "yc i" and even if | |
901 | we did do that we don't know that the file has symbols. */ | |
902 | static char exitmsg[] = "HMS>"; | |
903 | char *bp = bpt; | |
904 | char *ep = exitmsg; | |
905 | ||
906 | /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */ | |
907 | char swallowed[50]; | |
908 | /* Current position in swallowed. */ | |
909 | char *swallowed_p = swallowed; | |
910 | ||
911 | int ch; | |
912 | int ch_handled; | |
913 | int old_timeout = timeout; | |
914 | int old_immediate_quit = immediate_quit; | |
1f46923f SC |
915 | int swallowed_cr = 0; |
916 | ||
fa4b55a1 SC |
917 | DENTER("hms_wait()"); |
918 | ||
919 | WSETEXIT ((*status), 0); | |
920 | ||
921 | if (need_artificial_trap != 0) | |
1f46923f SC |
922 | { |
923 | WSETSTOP ((*status), SIGTRAP); | |
924 | need_artificial_trap--; | |
925 | return 0; | |
926 | } | |
fa4b55a1 | 927 | |
1f46923f SC |
928 | timeout = 0; /* Don't time out -- user program is running. */ |
929 | immediate_quit = 1; /* Helps ability to QUIT */ | |
fa4b55a1 | 930 | while (1) { |
1f46923f | 931 | QUIT; /* Let user quit and leave process running */ |
fa4b55a1 SC |
932 | ch_handled = 0; |
933 | ch = readchar (); | |
934 | if (ch == *bp) { | |
935 | bp++; | |
936 | if (*bp == '\0') | |
1f46923f | 937 | break; |
fa4b55a1 SC |
938 | ch_handled = 1; |
939 | ||
940 | *swallowed_p++ = ch; | |
1f46923f SC |
941 | } else |
942 | bp = bpt; | |
fa4b55a1 SC |
943 | if (ch == *ep || *ep == '?') { |
944 | ep++; | |
945 | if (*ep == '\0') | |
1f46923f | 946 | break; |
fa4b55a1 SC |
947 | |
948 | if (!ch_handled) | |
1f46923f | 949 | *swallowed_p++ = ch; |
fa4b55a1 | 950 | ch_handled = 1; |
1f46923f SC |
951 | } else |
952 | ep = exitmsg; | |
fa4b55a1 SC |
953 | if (!ch_handled) { |
954 | char *p; | |
955 | /* Print out any characters which have been swallowed. */ | |
956 | for (p = swallowed; p < swallowed_p; ++p) | |
957 | putc (*p, stdout); | |
958 | swallowed_p = swallowed; | |
959 | ||
960 | ||
961 | if ((ch != '\r' && ch != '\n') || swallowed_cr>10) | |
962 | { | |
963 | putc (ch, stdout); | |
964 | swallowed_cr = 10; | |
965 | } | |
966 | swallowed_cr ++; | |
967 | ||
968 | } | |
969 | } | |
970 | if (*bp== '\0') | |
971 | { | |
972 | WSETSTOP ((*status), SIGTRAP); | |
973 | expect_prompt(); | |
974 | } | |
975 | else | |
976 | { | |
977 | WSETEXIT ((*status), 0); | |
978 | } | |
979 | ||
980 | timeout = old_timeout; | |
981 | immediate_quit = old_immediate_quit; | |
fa4b55a1 SC |
982 | DEXIT("hms_wait()"); |
983 | return 0; | |
984 | } | |
985 | ||
986 | /* Return the name of register number REGNO | |
987 | in the form input and output by hms. | |
988 | ||
989 | Returns a pointer to a static buffer containing the answer. */ | |
990 | static char * | |
991 | get_reg_name (regno) | |
992 | int regno; | |
993 | { | |
994 | static char *rn[NUM_REGS]= REGISTER_NAMES; | |
995 | ||
996 | ||
997 | return rn[regno]; | |
998 | ||
999 | } | |
1000 | ||
1001 | /* Read the remote registers. */ | |
1002 | static int gethex(length, start, ok) | |
1003 | unsigned int length; | |
1004 | char *start; | |
1005 | int *ok; | |
1006 | { | |
1007 | int result = 0; | |
1008 | while (length--) | |
1009 | { | |
1010 | result <<= 4 ; | |
1011 | if (*start >='a' && *start <= 'f') | |
1012 | { | |
1013 | result += *start - 'a' + 10; | |
1014 | } | |
1015 | else if (*start >='A' && *start <= 'F') | |
1016 | { | |
1017 | result += *start - 'A' + 10; | |
1018 | } | |
1019 | else if (*start >='0' && *start <= '9') | |
1020 | { | |
1021 | result += *start - '0' ; | |
1022 | } | |
1023 | else *ok = 0; | |
1024 | start++; | |
1025 | ||
1026 | } | |
1027 | return result; | |
1028 | } | |
1029 | static int | |
1030 | timed_read(buf, n, timeout) | |
1031 | char *buf; | |
1032 | ||
1033 | { | |
1034 | int i; | |
1035 | char c; | |
1036 | i = 0; | |
1037 | while (i < n) | |
1038 | { | |
1039 | c = readchar(); | |
1040 | ||
1041 | if (c == 0) return i; | |
1042 | buf[i] = c; | |
1043 | i++; | |
1044 | ||
1045 | } | |
1046 | return i; | |
1047 | ||
1048 | } | |
1049 | hms_write(a,l) | |
1050 | char *a; | |
1051 | { | |
1052 | int i; | |
1053 | write(hms_desc,a,l); | |
1054 | if (!quiet) | |
1055 | for (i = 0; i < l ; i++) | |
1056 | { | |
1057 | printf("%c", a[i]); | |
1058 | } | |
1059 | } | |
1060 | ||
1f46923f SC |
1061 | hms_write_cr(s) |
1062 | char *s; | |
fa4b55a1 SC |
1063 | { |
1064 | hms_write( s, strlen(s)); | |
1f46923f SC |
1065 | hms_write("\r",1); |
1066 | } | |
1067 | ||
1068 | static void | |
1069 | hms_fetch_registers () | |
fa4b55a1 SC |
1070 | { |
1071 | #define REGREPLY_SIZE 79 | |
1072 | char linebuf[REGREPLY_SIZE+1]; | |
1073 | int i; | |
1074 | int s ; | |
1075 | int gottok; | |
1076 | ||
1f46923f SC |
1077 | REGISTER_TYPE reg[NUM_REGS]; |
1078 | int foo[8]; | |
fa4b55a1 SC |
1079 | check_open(); |
1080 | ||
1081 | do | |
1082 | { | |
1083 | ||
1084 | hms_write_cr("r"); | |
1085 | s = timed_read(linebuf, REGREPLY_SIZE, 1); | |
1086 | ||
1087 | ||
1088 | linebuf[REGREPLY_SIZE] = 0; | |
1089 | gottok = 0; | |
1090 | if (linebuf[0] == 'r' && | |
1091 | linebuf[1] == '\r' && | |
1092 | linebuf[2] == '\n' && | |
1093 | linebuf[3] == 'P' && | |
1094 | linebuf[4] == 'C' && | |
1095 | linebuf[5] == '=' && | |
1096 | linebuf[75] == 'H' && | |
1097 | linebuf[76] == 'M' && | |
1098 | linebuf[77] == 'S') | |
1099 | { | |
1100 | /* | |
1101 | PC=XXXX CCR=XX:XXXXXXXX R0-R7= XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX | |
1102 | 5436789012345678901234567890123456789012345678901234567890123456789012 | |
1103 | 0 1 2 3 4 5 6 | |
1104 | */ | |
1105 | gottok = 1; | |
1106 | ||
1107 | reg[PC_REGNUM] = gethex(4,linebuf+6, &gottok); | |
1108 | reg[CCR_REGNUM] = gethex(2,linebuf+15, &gottok); | |
1109 | for (i = 0; i < 8; i++) | |
1110 | { | |
1111 | reg[i] = gethex(4, linebuf+34+5*i, &gottok); | |
1112 | } | |
1113 | } | |
1114 | } | |
1115 | while (!gottok); | |
1116 | for (i = 0; i < NUM_REGS; i++) | |
1117 | { | |
1118 | supply_register (i, reg+i); | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
1123 | */ | |
1124 | static void | |
1125 | hms_fetch_register (regno) | |
1126 | int regno; | |
1127 | { | |
1128 | ||
1129 | hms_fetch_registers (); | |
1130 | ||
1131 | } | |
1132 | ||
1133 | /* Store the remote registers from the contents of the block REGS. */ | |
1134 | ||
1135 | static int | |
1136 | hms_store_registers () | |
1137 | { | |
1138 | int i; | |
1139 | for (i = 0; i < NUM_REGS; i++) | |
1140 | hms_store_register(i); | |
1141 | return 0; | |
1142 | ||
1143 | } | |
1144 | ||
1145 | /* Store register REGNO, or all if REGNO == -1. | |
1146 | Return errno value. */ | |
1147 | int | |
1148 | hms_store_register (regno) | |
1149 | int regno; | |
1150 | { | |
1151 | ||
1f46923f | 1152 | /* printf("hms_store_register() called.\n"); fflush(stdout); /* */ |
fa4b55a1 SC |
1153 | if (regno == -1) |
1154 | hms_store_registers (); | |
1155 | else | |
1156 | { | |
1157 | char *name = get_reg_name (regno); | |
1158 | char buffer[100]; | |
1159 | sprintf(buffer,"r %s=%x", name, read_register(regno)); | |
1160 | hms_write_cr(buffer); | |
1161 | expect_prompt(); | |
1162 | } | |
1163 | ||
1164 | DEXIT("hms_store_registers()"); | |
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | /* Get ready to modify the registers array. On machines which store | |
1169 | individual registers, this doesn't need to do anything. On machines | |
1170 | which store all the registers in one fell swoop, this makes sure | |
1171 | that registers contains all the registers from the program being | |
1172 | debugged. */ | |
1173 | ||
1174 | void | |
1175 | hms_prepare_to_store () | |
1176 | { | |
1177 | /* Do nothing, since we can store individual regs */ | |
1178 | } | |
1179 | ||
1180 | static CORE_ADDR | |
1181 | translate_addr(addr) | |
1182 | CORE_ADDR addr; | |
1183 | { | |
1184 | ||
1185 | return(addr); | |
1186 | ||
1187 | } | |
1188 | ||
1189 | /* Read a word from remote address ADDR and return it. | |
1190 | * This goes through the data cache. | |
1191 | */ | |
1192 | int | |
1193 | hms_fetch_word (addr) | |
1194 | CORE_ADDR addr; | |
1195 | { | |
1196 | return dcache_fetch (addr); | |
1197 | } | |
1198 | ||
1199 | /* Write a word WORD into remote address ADDR. | |
1200 | This goes through the data cache. */ | |
1201 | ||
1202 | void | |
1203 | hms_store_word (addr, word) | |
1204 | CORE_ADDR addr; | |
1205 | int word; | |
1206 | { | |
1207 | dcache_poke (addr, word); | |
1208 | } | |
1209 | ||
1210 | int | |
1211 | hms_xfer_inferior_memory(memaddr, myaddr, len, write, target) | |
1212 | CORE_ADDR memaddr; | |
1213 | char *myaddr; | |
1214 | int len; | |
1215 | int write; | |
1216 | struct target_ops *target; /* ignored */ | |
1217 | { | |
1218 | register int i; | |
1219 | /* Round starting address down to longword boundary. */ | |
1220 | register CORE_ADDR addr; | |
1221 | /* Round ending address up; get number of longwords that makes. */ | |
1222 | register int count; | |
1223 | /* Allocate buffer of that many longwords. */ | |
1224 | register int *buffer ; | |
1225 | ||
1226 | memaddr &= 0xffff; | |
1227 | addr = memaddr & - sizeof (int); | |
1228 | count = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); | |
1229 | ||
1f46923f | 1230 | |
fa4b55a1 SC |
1231 | buffer = (int *)alloca (count * sizeof (int)); |
1232 | if (write) | |
1233 | { | |
1234 | /* Fill start and end extra bytes of buffer with existing memory data. */ | |
1235 | ||
1236 | if (addr != memaddr || len < (int)sizeof (int)) { | |
1237 | /* Need part of initial word -- fetch it. */ | |
1238 | buffer[0] = hms_fetch_word (addr); | |
1239 | } | |
1240 | ||
1241 | if (count > 1) /* FIXME, avoid if even boundary */ | |
1242 | { | |
1243 | buffer[count - 1] | |
1244 | = hms_fetch_word (addr + (count - 1) * sizeof (int)); | |
1245 | } | |
1246 | ||
1247 | /* Copy data to be written over corresponding part of buffer */ | |
1248 | ||
1249 | bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); | |
1250 | ||
1251 | /* Write the entire buffer. */ | |
1252 | ||
1253 | for (i = 0; i < count; i++, addr += sizeof (int)) | |
1254 | { | |
1255 | errno = 0; | |
1256 | hms_store_word (addr, buffer[i]); | |
1257 | if (errno) | |
1258 | { | |
1259 | ||
1260 | return 0; | |
1261 | } | |
1262 | ||
1263 | } | |
1264 | } | |
1265 | else | |
1266 | { | |
1267 | /* Read all the longwords */ | |
1268 | for (i = 0; i < count; i++, addr += sizeof (int)) | |
1269 | { | |
1270 | errno = 0; | |
1271 | buffer[i] = hms_fetch_word (addr); | |
1272 | if (errno) | |
1273 | { | |
1274 | return 0; | |
1275 | } | |
1276 | QUIT; | |
1277 | } | |
1278 | ||
1279 | /* Copy appropriate bytes out of the buffer. */ | |
1280 | bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len); | |
1281 | } | |
1282 | ||
1283 | ||
1284 | return len; | |
1285 | } | |
1286 | ||
1287 | #if 0 | |
1288 | int | |
1289 | hms_xfer_inferior_memory (memaddr, myaddr, len, write) | |
1290 | CORE_ADDR memaddr; | |
1291 | char *myaddr; | |
1292 | int len; | |
1293 | int write; | |
1294 | { | |
1295 | memaddr &= 0xffff; | |
1296 | if (write) | |
1297 | return hms_write_inferior_memory (memaddr, myaddr, len); | |
1298 | else | |
1299 | return hms_read_inferior_memory (memaddr, myaddr, len); | |
1300 | ||
1301 | } | |
1302 | #endif | |
1303 | ||
1304 | int | |
1305 | hms_write_inferior_memory (memaddr, myaddr, len) | |
1306 | CORE_ADDR memaddr; | |
1307 | char *myaddr; | |
1308 | int len; | |
1309 | { | |
1310 | ||
1311 | bfd *abfd = bfd_openw(dev_name, "srec"); | |
1312 | asection *a; | |
1313 | ||
1314 | bfd_set_format(abfd, bfd_object); | |
1315 | a = bfd_make_section(abfd, ".text"); | |
1316 | a->vma = memaddr; | |
1317 | a->_raw_size = len; | |
1318 | a->flags = SEC_LOAD | SEC_HAS_CONTENTS; | |
1319 | hms_write_cr("tl"); /* tell hms here comes the recs */ | |
1320 | bfd_set_section_contents(abfd, a, myaddr, 0, len); | |
1321 | bfd_close(abfd); | |
1322 | ||
1323 | expect_prompt(); | |
1324 | } | |
1325 | ||
1326 | void | |
1327 | hms_files_info () | |
1328 | { | |
1329 | printf_filtered("\tAttached to %s at %d baud and running program %s\n", | |
1330 | dev_name, baudrate, bfd_get_filename(exec_bfd)); | |
1331 | printf_filtered("\ton an H8/300 processor.\n"); | |
1332 | } | |
1333 | ||
1334 | /* Copy LEN bytes of data from debugger memory at MYADDR | |
1335 | to inferior's memory at MEMADDR. Returns errno value. | |
1336 | * sb/sh instructions don't work on unaligned addresses, when TU=1. | |
1337 | */ | |
1338 | ||
1339 | ||
1340 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result | |
1341 | at debugger address MYADDR. Returns errno value. */ | |
1342 | int | |
1343 | hms_read_inferior_memory(memaddr, myaddr, len) | |
1344 | CORE_ADDR memaddr; | |
1345 | char *myaddr; | |
1346 | int len; | |
1347 | { | |
1348 | /* Align to nearest low 16 bits */ | |
1349 | int i; | |
1350 | ||
1351 | #if 0 | |
1352 | CORE_ADDR start = memaddr & ~0xf; | |
1353 | CORE_ADDR end = ((memaddr + len +16) & ~0xf) -1; | |
1354 | #endif | |
1355 | CORE_ADDR start = memaddr; | |
1356 | CORE_ADDR end = memaddr + len -1; | |
1357 | ||
1358 | int ok =1; | |
1359 | ||
1360 | /* | |
1361 | AAAA: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX '................' | |
1362 | 012345678901234567890123456789012345678901234567890123456789012345 | |
1363 | 0 1 2 3 4 5 6 | |
1364 | */ | |
1365 | char buffer[66]; | |
1366 | if (memaddr & 0xf) abort(); | |
1367 | if (len != 16) abort(); | |
1368 | ||
1369 | sprintf(buffer, "m %4x %4x", start, end); | |
1370 | hms_write_cr(buffer); | |
1371 | /* drop the echo and newline*/ | |
1372 | for (i = 0; i < 13; i++) | |
1373 | readchar(); | |
1374 | ||
1375 | ||
1376 | ||
1377 | /* Grab the lines as they come out and fill the area */ | |
1378 | /* Skip over cr */ | |
1379 | while(1) | |
1380 | { | |
1381 | int p; | |
1382 | int i; | |
1383 | int addr; | |
1384 | size_t idx; | |
1385 | ||
1386 | char byte[16]; | |
1387 | buffer[0] = readchar(); | |
1388 | if (buffer[0] == 'M') | |
1389 | break; | |
1390 | for (i = 1; i < 66; i++) | |
1391 | buffer[i] = readchar(); | |
1392 | ||
1393 | /* Now parse the line */ | |
1394 | ||
1395 | addr = gethex(4, buffer, &ok); | |
1396 | idx = 6; | |
1397 | for (p = 0; p < 16; p+=2) | |
1398 | { | |
1399 | byte[p] = gethex(2, buffer + idx, &ok); | |
1400 | byte[p+1] = gethex(2, buffer+ idx + 2, &ok); | |
1401 | idx+=5; | |
1402 | ||
1403 | } | |
1404 | ||
1405 | ||
1406 | for (p = 0; p<16;p++) | |
1407 | { | |
1408 | if (addr + p >= memaddr && | |
1409 | addr + p < memaddr + len) | |
1410 | { | |
1411 | myaddr[ (addr + p)-memaddr] = byte[p]; | |
1412 | ||
1413 | } | |
1414 | ||
1415 | } | |
1416 | } | |
1417 | ||
1418 | ||
1419 | ||
1420 | hms_write("\003",1); | |
1421 | expect_prompt(); | |
1422 | ||
1423 | ||
1424 | ||
1425 | ||
1426 | return len; | |
1427 | ||
1428 | } | |
1429 | ||
1430 | /* This routine is run as a hook, just before the main command loop is | |
1431 | entered. If gdb is configured for the H8, but has not had its | |
1432 | target specified yet, this will loop prompting the user to do so. | |
1433 | */ | |
1434 | ||
1435 | hms_before_main_loop () | |
1436 | { | |
1437 | char ttyname[100]; | |
1438 | char *p, *p2; | |
1439 | extern FILE *instream; | |
1440 | extern jmp_buf to_top_level; | |
1441 | ||
1442 | push_target (&hms_ops); | |
1443 | #if 0 | |
1444 | ||
1445 | while (current_target != &hms_ops) { | |
1446 | /* remote tty not specified yet */ | |
1447 | if ( instream == stdin ){ | |
1448 | printf("\nEnter device and filename, or \"quit\" to quit: "); | |
1449 | fflush( stdout ); | |
1450 | } | |
1451 | fgets( ttyname, sizeof(ttyname)-1, stdin ); | |
1452 | ||
1453 | if ( !strcmp("quit", ttyname) ){ | |
1454 | exit(1); | |
1455 | } | |
1456 | ||
1457 | hms_open( ttyname, 1 ); | |
1458 | ||
1459 | /* Now that we have a tty open for talking to the remote machine, | |
1460 | download the executable file if one was specified. */ | |
1461 | if ( !setjmp(to_top_level) && exec_bfd ) { | |
1462 | target_load (bfd_get_filename (exec_bfd), 1); | |
1463 | } | |
1464 | } | |
1465 | #endif | |
1466 | } | |
1467 | ||
1468 | ||
1469 | #define MAX_BREAKS 16 | |
1470 | static int num_brkpts=0; | |
1471 | static int | |
1472 | hms_insert_breakpoint(addr, save) | |
1473 | CORE_ADDR addr; | |
1474 | char *save; /* Throw away, let hms save instructions */ | |
1475 | { | |
1476 | ||
1477 | DENTER("hms_insert_breakpoint()"); | |
1478 | check_open(); | |
1479 | ||
1480 | if (num_brkpts < MAX_BREAKS) { | |
1481 | char buffer[100]; | |
1482 | num_brkpts++; | |
1483 | sprintf(buffer,"b %x", addr & 0xffff); | |
1484 | hms_write_cr(buffer); | |
1485 | expect_prompt (); | |
1486 | DEXIT("hms_insert_breakpoint() success"); | |
1487 | return(0); /* Success */ | |
1488 | } else { | |
1489 | fprintf_filtered(stderr, | |
1490 | "Too many break points, break point not installed\n"); | |
1491 | DEXIT("hms_insert_breakpoint() failure"); | |
1492 | return(1); /* Failure */ | |
1493 | } | |
1494 | ||
1495 | ||
1496 | } | |
1497 | static int | |
1498 | hms_remove_breakpoint(addr, save) | |
1499 | CORE_ADDR addr; | |
1500 | char *save; /* Throw away, let hms save instructions */ | |
1501 | { | |
1502 | DENTER("hms_remove_breakpoint()"); | |
1503 | if (num_brkpts > 0) { | |
1504 | char buffer[100]; | |
1505 | ||
1506 | num_brkpts--; | |
1507 | sprintf(buffer,"b - %x", addr & 0xffff); | |
1508 | hms_write_cr(buffer); | |
1509 | expect_prompt(); | |
1510 | ||
1511 | } | |
1512 | DEXIT("hms_remove_breakpoint()"); | |
1513 | return(0); | |
1514 | } | |
1515 | ||
1516 | /* Clear the hmss notion of what the break points are */ | |
1517 | static int | |
1518 | hms_clear_breakpoints() | |
1519 | { | |
1520 | ||
1521 | DENTER("hms_clear_breakpoint()"); | |
1522 | if (OPEN(hms_desc)) { | |
1523 | hms_write_cr("b -"); | |
1524 | expect_prompt (); | |
1525 | } | |
1526 | num_brkpts = 0; | |
1527 | ||
1528 | DEXIT("hms_clear_breakpoint()"); | |
1529 | } | |
1530 | static void | |
1531 | hms_mourn() | |
1532 | { | |
1533 | DENTER("hms_mourn()"); | |
1534 | hms_clear_breakpoints(); | |
1535 | /* pop_target (); /* Pop back to no-child state */ | |
1536 | generic_mourn_inferior (); | |
1537 | DEXIT("hms_mourn()"); | |
1538 | } | |
1539 | ||
1540 | /* Display everthing we read in from the hms until we match/see the | |
1541 | * specified string | |
1542 | */ | |
1543 | static int | |
1544 | display_until(str) | |
1545 | char *str; | |
1546 | { | |
1547 | int i=0,j,c; | |
1548 | ||
1549 | while (c=readchar()) { | |
1550 | if (c==str[i]) { | |
1551 | i++; | |
1552 | if (i == strlen(str)) return; | |
1553 | } else { | |
1554 | if (i) { | |
1555 | for (j=0 ; j<i ; j++) /* Put everthing we matched */ | |
1556 | putchar(str[j]); | |
1557 | i=0; | |
1558 | } | |
1559 | putchar(c); | |
1560 | } | |
1561 | } | |
1562 | ||
1563 | } | |
1564 | ||
1565 | ||
1566 | /* Put a command string, in args, out to the hms. The hms is assumed to | |
1567 | be in raw mode, all writing/reading done through hms_desc. | |
1568 | Ouput from the hms is placed on the users terminal until the | |
1569 | prompt from the hms is seen. | |
1570 | FIXME: Can't handle commands that take input. */ | |
1571 | ||
1572 | void | |
1573 | hms_com (args, fromtty) | |
1574 | char *args; | |
1575 | int fromtty; | |
1576 | { | |
1577 | check_open(); | |
1578 | ||
1579 | if (!args) return; | |
1580 | ||
1581 | /* Clear all input so only command relative output is displayed */ | |
1582 | ||
1583 | ||
1584 | hms_write_cr(args); | |
1585 | hms_write("\030",1); | |
1586 | expect_prompt(); | |
1587 | ||
1588 | } | |
1589 | ||
1590 | /* Define the target subroutine names */ | |
1591 | ||
1592 | struct target_ops hms_ops = { | |
1593 | "hms", "Remote HMS monitor", | |
1594 | "Use the H8 evaluation board running the HMS monitor connected\n\ | |
1595 | by a serial line.", | |
1596 | ||
1597 | hms_open, hms_close, | |
1598 | hms_attach, hms_detach, hms_resume, hms_wait, | |
1599 | hms_fetch_register, hms_store_register, | |
1600 | hms_prepare_to_store, 0, 0, /* conv_to, conv_from */ | |
1601 | hms_xfer_inferior_memory, | |
1602 | hms_files_info, | |
1603 | hms_insert_breakpoint, hms_remove_breakpoint, /* Breakpoints */ | |
1604 | 0, 0, 0, 0, 0, /* Terminal handling */ | |
1605 | hms_kill, /* FIXME, kill */ | |
1606 | hms_load, | |
1607 | call_function_by_hand, | |
1608 | 0, /* lookup_symbol */ | |
1609 | hms_create_inferior, /* create_inferior */ | |
1610 | hms_mourn, /* mourn_inferior FIXME */ | |
1611 | process_stratum, 0, /* next */ | |
1612 | 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ | |
1613 | 0,0, /* Section pointers */ | |
1614 | OPS_MAGIC, /* Always the last thing */ | |
1615 | }; | |
1616 | ||
1617 | ||
1618 | hms_quiet() | |
1619 | { | |
1620 | quiet = ! quiet; | |
1621 | } | |
1622 | ||
1623 | hms_device(s) | |
1624 | char *s; | |
1625 | { | |
1626 | if (s) { | |
1627 | dev_name = get_word(&s); | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | static hms_speed(s) | |
1632 | char *s; | |
1633 | { | |
1634 | if (s) | |
1635 | { | |
1636 | char buffer[100]; | |
1637 | int newrate = atoi(s); | |
1638 | int which = 0; | |
1639 | while (baudtab[which].rate != newrate) | |
1640 | { | |
1641 | if (baudtab[which].rate == -1) | |
1642 | { | |
1643 | error("Can't use %d baud\n", newrate); | |
1644 | } | |
1645 | which++; | |
1646 | } | |
1647 | ||
1648 | ||
1649 | ||
1650 | printf_filtered("Checking target is in sync\n"); | |
1651 | ||
1652 | ||
1653 | get_baudrate_right(); | |
1654 | baudrate = newrate; | |
1655 | printf_filtered("Sending commands to set target to %d\n", | |
1656 | baudrate); | |
1657 | ||
1658 | sprintf(buffer, "tm %d. N 8 1", baudrate); | |
1659 | hms_write(buffer); | |
1660 | } | |
1661 | } | |
1662 | ||
1663 | /***********************************************************************/ | |
1664 | ||
1665 | void | |
1666 | _initialize_remote_hms () | |
1667 | { | |
1668 | add_target (&hms_ops); | |
1669 | add_com ("hms <command>", class_obscure, hms_com, | |
1670 | "Send a command to the HMS monitor."); | |
1671 | add_com ("snoop", class_obscure, hms_quiet, | |
1672 | "Show what commands are going to the monitor"); | |
1673 | add_com ("device", class_obscure, hms_device, | |
1674 | "Set the terminal line for HMS communications"); | |
1675 | ||
1676 | add_com ("speed", class_obscure, hms_speed, | |
1677 | "Set the terminal line speed for HMS communications"); | |
1678 | ||
1679 | } | |
1680 | ||
1681 |