Commit | Line | Data |
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7c18a68f JG |
1 | /* Remote debugging interface for AMD 290*0 Adapt Monitor Version 2.1d18. |
2 | Copyright 1990, 1991 Free Software Foundation, Inc. | |
3 | Contributed by David Wood at New York University (wood@lab.ultra.nyu.edu). | |
4 | Adapted from work done at Cygnus Support in remote-eb.c. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | /* This is like remote.c but is for an esoteric situation-- | |
23 | having a 29k board attached to an Adapt inline monitor. | |
24 | The monitor is connected via serial line to a unix machine | |
25 | running gdb. | |
26 | ||
27 | 3/91 - developed on Sun3 OS 4.1, by David Wood | |
28 | o - I can't get binary coff to load. | |
29 | o - I can't get 19200 baud rate to work. | |
30 | 7/91 o - Freeze mode tracing can be done on a 29050. */ | |
31 | ||
32 | #include <stdio.h> | |
33 | #include <string.h> | |
34 | #include "defs.h" | |
35 | #include "tm.h" | |
36 | #include "param-no-tm.h" | |
37 | #include "inferior.h" | |
38 | #include "wait.h" | |
39 | #include "value.h" | |
40 | #include <ctype.h> | |
41 | #include <fcntl.h> | |
42 | #include <signal.h> | |
43 | #include <errno.h> | |
44 | #include "terminal.h" | |
45 | #include "target.h" | |
46 | #include "gdbcore.h" | |
47 | ||
48 | /* External data declarations */ | |
49 | extern int stop_soon_quietly; /* for wait_for_inferior */ | |
50 | ||
51 | /* External function declarations */ | |
52 | extern struct value *call_function_by_hand(); | |
53 | ||
54 | /* Forward data declarations */ | |
55 | extern struct target_ops adapt_ops; /* Forward declaration */ | |
56 | ||
57 | /* Forward function declarations */ | |
58 | static void adapt_fetch_registers (); | |
59 | static int adapt_store_registers (); | |
15f27b29 | 60 | static void adapt_close (); |
e36ca74a | 61 | static int adapt_clear_breakpoints(); |
7c18a68f JG |
62 | |
63 | /* | |
64 | * Processor types. It is assumed that the adapt has the correct | |
65 | * ROM for the given processor. | |
66 | */ | |
67 | #define TYPE_UNKNOWN 0 | |
68 | #define TYPE_A29000 1 | |
69 | #define TYPE_A29030 2 | |
70 | #define TYPE_A29050 3 | |
71 | static char *processor_name[] = { "Unknown", "A29000", "A29030", "A29050" }; | |
72 | static int processor_type=TYPE_UNKNOWN; | |
73 | ||
74 | #define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400) | |
75 | #define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE) | |
76 | ||
77 | ||
78 | /* #define DEBUG /* */ | |
79 | #ifdef DEBUG | |
80 | # define DENTER(NAME) (printf_filtered("Entering %s\n",NAME), fflush(stdout)) | |
81 | # define DEXIT(NAME) (printf_filtered("Exiting %s\n",NAME), fflush(stdout)) | |
82 | #else | |
83 | # define DENTER(NAME) | |
84 | # define DEXIT(NAME) | |
85 | #endif | |
86 | ||
87 | /* Can't seem to get binary coff working */ | |
88 | #define ASCII_COFF /* Adapt will be downloaded with ascii coff */ | |
89 | ||
90 | #define LOG_FILE "adapt.log" | |
91 | #if defined (LOG_FILE) | |
92 | FILE *log_file=NULL; | |
93 | #endif | |
94 | ||
95 | static int timeout = 5; | |
96 | static char *dev_name; | |
97 | ||
98 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that | |
99 | adapt_open knows that we don't have a file open when the program | |
100 | starts. */ | |
101 | int adapt_desc = -1; | |
102 | ||
103 | /* stream which is fdopen'd from adapt_desc. Only valid when | |
104 | adapt_desc != -1. */ | |
105 | FILE *adapt_stream; | |
106 | ||
107 | #define ON 1 | |
108 | #define OFF 0 | |
109 | static void | |
110 | rawmode(desc, turnon) | |
111 | int desc; | |
112 | int turnon; | |
113 | { | |
114 | TERMINAL sg; | |
115 | ||
116 | if (desc < 0) | |
117 | return; | |
118 | ||
119 | ioctl (desc, TIOCGETP, &sg); | |
120 | ||
121 | if (turnon) { | |
122 | #ifdef HAVE_TERMIO | |
123 | sg.c_lflag &= ~(ICANON); | |
124 | #else | |
125 | sg.sg_flags |= RAW; | |
126 | #endif | |
127 | } else { | |
128 | #ifdef HAVE_TERMIO | |
129 | sg.c_lflag |= ICANON; | |
130 | #else | |
131 | sg.sg_flags &= ~(RAW); | |
132 | #endif | |
133 | } | |
134 | ioctl (desc, TIOCSETP, &sg); | |
135 | } | |
136 | ||
137 | /* Suck up all the input from the adapt */ | |
138 | slurp_input() | |
139 | { | |
140 | char buf[8]; | |
141 | ||
142 | #ifdef HAVE_TERMIO | |
143 | /* termio does the timeout for us. */ | |
144 | while (read (adapt_desc, buf, 8) > 0); | |
145 | #else | |
146 | alarm (timeout); | |
147 | while (read (adapt_desc, buf, 8) > 0); | |
148 | alarm (0); | |
149 | #endif | |
150 | } | |
151 | ||
152 | /* Read a character from the remote system, doing all the fancy | |
153 | timeout stuff. */ | |
154 | static int | |
155 | readchar () | |
156 | { | |
157 | char buf; | |
158 | ||
159 | buf = '\0'; | |
160 | #ifdef HAVE_TERMIO | |
161 | /* termio does the timeout for us. */ | |
162 | read (adapt_desc, &buf, 1); | |
163 | #else | |
164 | alarm (timeout); | |
165 | if (read (adapt_desc, &buf, 1) < 0) | |
166 | { | |
167 | if (errno == EINTR) | |
168 | error ("Timeout reading from remote system."); | |
169 | else | |
170 | perror_with_name ("remote"); | |
171 | } | |
172 | alarm (0); | |
173 | #endif | |
174 | ||
175 | if (buf == '\0') | |
176 | error ("Timeout reading from remote system."); | |
177 | #if defined (LOG_FILE) | |
178 | putc (buf & 0x7f, log_file); | |
179 | #endif | |
180 | return buf & 0x7f; | |
181 | } | |
182 | ||
183 | /* Keep discarding input from the remote system, until STRING is found. | |
184 | Let the user break out immediately. */ | |
185 | static void | |
186 | expect (string) | |
187 | char *string; | |
188 | { | |
189 | char *p = string; | |
190 | ||
191 | fflush(adapt_stream); | |
192 | immediate_quit = 1; | |
193 | while (1) | |
194 | { | |
195 | if (readchar() == *p) | |
196 | { | |
197 | p++; | |
198 | if (*p == '\0') | |
199 | { | |
200 | immediate_quit = 0; | |
201 | return; | |
202 | } | |
203 | } | |
204 | else | |
205 | p = string; | |
206 | } | |
207 | } | |
208 | ||
209 | /* Keep discarding input until we see the adapt prompt. | |
210 | ||
211 | The convention for dealing with the prompt is that you | |
212 | o give your command | |
213 | o *then* wait for the prompt. | |
214 | ||
215 | Thus the last thing that a procedure does with the serial line | |
216 | will be an expect_prompt(). Exception: adapt_resume does not | |
217 | wait for the prompt, because the terminal is being handed over | |
218 | to the inferior. However, the next thing which happens after that | |
219 | is a adapt_wait which does wait for the prompt. | |
220 | Note that this includes abnormal exit, e.g. error(). This is | |
221 | necessary to prevent getting into states from which we can't | |
222 | recover. */ | |
223 | static void | |
224 | expect_prompt () | |
225 | { | |
226 | #if defined (LOG_FILE) | |
227 | /* This is a convenient place to do this. The idea is to do it often | |
228 | enough that we never lose much data if we terminate abnormally. */ | |
229 | fflush (log_file); | |
230 | #endif | |
231 | fflush(adapt_stream); | |
232 | expect ("\n# "); | |
233 | } | |
234 | ||
235 | /* Get a hex digit from the remote system & return its value. | |
236 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ | |
237 | static int | |
238 | get_hex_digit (ignore_space) | |
239 | int ignore_space; | |
240 | { | |
241 | int ch; | |
242 | while (1) | |
243 | { | |
244 | ch = readchar (); | |
245 | if (ch >= '0' && ch <= '9') | |
246 | return ch - '0'; | |
247 | else if (ch >= 'A' && ch <= 'F') | |
248 | return ch - 'A' + 10; | |
249 | else if (ch >= 'a' && ch <= 'f') | |
250 | return ch - 'a' + 10; | |
251 | else if (ch == ' ' && ignore_space) | |
252 | ; | |
253 | else | |
254 | { | |
255 | expect_prompt (); | |
256 | error ("Invalid hex digit from remote system."); | |
257 | } | |
258 | } | |
259 | } | |
260 | ||
261 | /* Get a byte from adapt_desc and put it in *BYT. Accept any number | |
262 | leading spaces. */ | |
263 | static void | |
264 | get_hex_byte (byt) | |
265 | char *byt; | |
266 | { | |
267 | int val; | |
268 | ||
269 | val = get_hex_digit (1) << 4; | |
270 | val |= get_hex_digit (0); | |
271 | *byt = val; | |
272 | } | |
273 | ||
274 | /* Read a 32-bit hex word from the adapt, preceded by a space */ | |
275 | static long | |
276 | get_hex_word() | |
277 | { | |
278 | long val; | |
279 | int j; | |
280 | ||
281 | val = 0; | |
282 | for (j = 0; j < 8; j++) | |
283 | val = (val << 4) + get_hex_digit (j == 0); | |
284 | return val; | |
285 | } | |
286 | /* Get N 32-bit hex words from remote, each preceded by a space | |
287 | and put them in registers starting at REGNO. */ | |
288 | static void | |
289 | get_hex_regs (n, regno) | |
290 | int n; | |
291 | int regno; | |
292 | { | |
293 | long val; | |
294 | while (n--) { | |
295 | val = get_hex_word(); | |
296 | supply_register(regno++,&val); | |
297 | } | |
298 | } | |
299 | /* Called when SIGALRM signal sent due to alarm() timeout. */ | |
300 | #ifndef HAVE_TERMIO | |
301 | ||
302 | #ifndef __STDC__ | |
303 | # ifndef volatile | |
304 | # define volatile /**/ | |
305 | # endif | |
306 | #endif | |
307 | volatile int n_alarms; | |
308 | ||
309 | void | |
310 | adapt_timer () | |
311 | { | |
312 | #if 0 | |
313 | if (kiodebug) | |
314 | printf ("adapt_timer called\n"); | |
315 | #endif | |
316 | n_alarms++; | |
317 | } | |
318 | #endif | |
319 | ||
320 | /* malloc'd name of the program on the remote system. */ | |
321 | static char *prog_name = NULL; | |
322 | ||
323 | /* Number of SIGTRAPs we need to simulate. That is, the next | |
324 | NEED_ARTIFICIAL_TRAP calls to adapt_wait should just return | |
325 | SIGTRAP without actually waiting for anything. */ | |
326 | ||
327 | static int need_artificial_trap = 0; | |
328 | ||
329 | void | |
330 | adapt_kill(arg,from_tty) | |
331 | char *arg; | |
332 | int from_tty; | |
333 | { | |
334 | DENTER("adapt_kill()"); | |
335 | fprintf (adapt_stream, "K"); | |
336 | fprintf (adapt_stream, "\r"); | |
337 | expect_prompt (); | |
338 | DEXIT("adapt_kill()"); | |
339 | } | |
340 | /* | |
341 | * Download a file specified in 'args', to the adapt. | |
342 | * FIXME: Assumes the file to download is a binary coff file. | |
343 | */ | |
344 | static void | |
345 | adapt_load(args,fromtty) | |
346 | char *args; | |
347 | int fromtty; | |
348 | { | |
349 | FILE *fp; | |
350 | int n; | |
351 | char buffer[1024]; | |
352 | ||
353 | DENTER("adapt_load()"); | |
354 | if (!adapt_stream) { | |
355 | printf_filtered("Adapt not open. Use 'target' command to open adapt\n"); | |
356 | return; | |
357 | } | |
358 | ||
359 | /* OK, now read in the file. Y=read, C=COFF, T=dTe port | |
360 | 0=start address. */ | |
361 | ||
362 | #ifdef ASCII_COFF /* Ascii coff */ | |
363 | fprintf (adapt_stream, "YA T,0\r"); | |
364 | fflush(adapt_stream); /* Just in case */ | |
365 | /* FIXME: should check args for only 1 argument */ | |
366 | sprintf(buffer,"cat %s | btoa > /tmp/#adapt-btoa",args); | |
367 | system(buffer); | |
368 | fp = fopen("/tmp/#adapt-btoa","r"); | |
369 | rawmode(adapt_desc,OFF); | |
370 | while (n=fread(buffer,1,1024,fp)) { | |
371 | do { n -= write(adapt_desc,buffer,n); } while (n>0); | |
372 | if (n<0) { perror("writing ascii coff"); break; } | |
373 | } | |
374 | fclose(fp); | |
375 | rawmode(adapt_desc,ON); | |
376 | system("rm /tmp/#adapt-btoa"); | |
377 | #else /* Binary coff - can't get it to work .*/ | |
378 | fprintf (adapt_stream, "YC T,0\r"); | |
379 | fflush(adapt_stream); /* Just in case */ | |
380 | if (!(fp = fopen(args,"r"))) { | |
381 | printf_filtered("Can't open %s\n",args); | |
382 | return; | |
383 | } | |
384 | while (n=fread(buffer,1,512,fp)) { | |
385 | do { n -= write(adapt_desc,buffer,n); } while (n>0); | |
386 | if (n<0) { perror("writing ascii coff"); break; } | |
387 | } | |
388 | fclose(fp); | |
389 | #endif | |
390 | expect_prompt (); /* Skip garbage that comes out */ | |
391 | fprintf (adapt_stream, "\r"); | |
392 | expect_prompt (); | |
393 | DEXIT("adapt_load()"); | |
394 | } | |
395 | ||
396 | /* This is called not only when we first attach, but also when the | |
397 | user types "run" after having attached. */ | |
398 | void | |
399 | adapt_create_inferior (execfile, args, env) | |
400 | char *execfile; | |
401 | char *args; | |
402 | char **env; | |
403 | { | |
404 | int entry_pt; | |
405 | ||
406 | DENTER("adapt_create_inferior()"); | |
407 | ||
408 | if (args && *args) | |
409 | error ("Can't pass arguments to remote adapt process."); | |
410 | ||
411 | if (execfile == 0 || exec_bfd == 0) | |
412 | error ("No exec file specified"); | |
413 | ||
414 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
415 | ||
416 | if (adapt_stream) { | |
417 | adapt_kill(NULL,NULL); | |
418 | adapt_clear_breakpoints(); | |
419 | init_wait_for_inferior (); | |
420 | /* Clear the input because what the adapt sends back is different | |
421 | * depending on whether it was running or not. | |
422 | */ | |
423 | slurp_input(); /* After this there should be a prompt */ | |
424 | fprintf(adapt_stream,"\r"); | |
425 | expect_prompt(); | |
426 | printf_filtered("Do you want to download '%s' (y/n)? [y] : ",prog_name); | |
427 | { | |
428 | char buffer[10]; | |
429 | gets(buffer); | |
430 | if (*buffer != 'n') { | |
431 | adapt_load(prog_name,0); | |
432 | } | |
433 | } | |
434 | ||
435 | #ifdef NOTDEF | |
436 | /* Set the PC and wait for a go/cont */ | |
437 | fprintf (adapt_stream, "G %x,N\r",entry_pt); | |
438 | printf_filtered("Now use the 'continue' command to start.\n"); | |
439 | expect_prompt (); | |
440 | #else | |
441 | insert_breakpoints (); /* Needed to get correct instruction in cache */ | |
442 | proceed(entry_pt, -1, 0); | |
443 | #endif | |
444 | ||
445 | } else { | |
446 | printf_filtered("Adapt not open yet.\n"); | |
447 | } | |
448 | DEXIT("adapt_create_inferior()"); | |
449 | } | |
450 | ||
451 | /* Translate baud rates from integers to damn B_codes. Unix should | |
452 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ | |
453 | ||
454 | #ifndef B19200 | |
455 | #define B19200 EXTA | |
456 | #endif | |
457 | #ifndef B38400 | |
458 | #define B38400 EXTB | |
459 | #endif | |
460 | ||
461 | static struct {int rate, damn_b;} baudtab[] = { | |
462 | {0, B0}, | |
463 | {50, B50}, | |
464 | {75, B75}, | |
465 | {110, B110}, | |
466 | {134, B134}, | |
467 | {150, B150}, | |
468 | {200, B200}, | |
469 | {300, B300}, | |
470 | {600, B600}, | |
471 | {1200, B1200}, | |
472 | {1800, B1800}, | |
473 | {2400, B2400}, | |
474 | {4800, B4800}, | |
475 | {9600, B9600}, | |
476 | {19200, B19200}, | |
477 | {38400, B38400}, | |
478 | {-1, -1}, | |
479 | }; | |
480 | ||
481 | static int damn_b (rate) | |
482 | int rate; | |
483 | { | |
484 | int i; | |
485 | ||
486 | for (i = 0; baudtab[i].rate != -1; i++) | |
487 | if (rate == baudtab[i].rate) return baudtab[i].damn_b; | |
488 | return B38400; /* Random */ | |
489 | } | |
490 | ||
491 | ||
492 | /* Open a connection to a remote debugger. | |
493 | NAME is the filename used for communication, then a space, | |
494 | then the baud rate. | |
495 | */ | |
496 | ||
497 | static int baudrate = 9600; | |
498 | static void | |
499 | adapt_open (name, from_tty) | |
500 | char *name; | |
501 | int from_tty; | |
502 | { | |
503 | TERMINAL sg; | |
504 | unsigned int prl; | |
505 | char *p; | |
506 | ||
507 | DENTER("adapt_open()"); | |
508 | /* Find the first whitespace character, it separates dev_name from | |
509 | prog_name. */ | |
510 | if (name == 0) | |
511 | goto erroid; | |
512 | ||
513 | for (p = name; | |
514 | *p != '\0' && !isspace (*p); p++) | |
515 | ; | |
516 | if (*p == '\0') | |
517 | erroid: | |
518 | error ("\ | |
519 | Please include the name of the device for the serial port,\n\ | |
520 | the baud rate, and the name of the program to run on the remote system."); | |
521 | dev_name = (char*)malloc(p - name + 1); | |
522 | strncpy (dev_name, name, p - name); | |
523 | dev_name[p - name] = '\0'; | |
524 | ||
525 | /* Skip over the whitespace after dev_name */ | |
526 | for (; isspace (*p); p++) | |
527 | /*EMPTY*/; | |
528 | ||
529 | if (1 != sscanf (p, "%d ", &baudrate)) | |
530 | goto erroid; | |
531 | ||
532 | /* Skip the number and then the spaces */ | |
533 | for (; isdigit (*p); p++) | |
534 | /*EMPTY*/; | |
535 | for (; isspace (*p); p++) | |
536 | /*EMPTY*/; | |
537 | ||
538 | if (prog_name != NULL) | |
539 | free (prog_name); | |
540 | prog_name = savestring (p, strlen (p)); | |
541 | ||
542 | adapt_close (0); | |
543 | ||
544 | adapt_desc = open (dev_name, O_RDWR); | |
545 | if (adapt_desc < 0) | |
546 | perror_with_name (dev_name); | |
547 | ioctl (adapt_desc, TIOCGETP, &sg); | |
548 | #ifdef HAVE_TERMIO | |
549 | sg.c_cc[VMIN] = 0; /* read with timeout. */ | |
550 | sg.c_cc[VTIME] = timeout * 10; | |
551 | sg.c_lflag &= ~(ICANON | ECHO); | |
552 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); | |
553 | #else | |
554 | sg.sg_ispeed = damn_b (baudrate); | |
555 | sg.sg_ospeed = damn_b (baudrate); | |
556 | sg.sg_flags |= RAW | ANYP; | |
557 | sg.sg_flags &= ~ECHO; | |
558 | #endif | |
559 | ||
560 | ioctl (adapt_desc, TIOCSETP, &sg); | |
561 | adapt_stream = fdopen (adapt_desc, "r+"); | |
562 | ||
563 | push_target (&adapt_ops); | |
564 | /* start_remote (); /* Initialize gdb process mechanisms */ | |
565 | ||
566 | ||
567 | #ifndef HAVE_TERMIO | |
568 | #ifndef NO_SIGINTERRUPT | |
569 | /* Cause SIGALRM's to make reads fail with EINTR instead of resuming | |
570 | the read. */ | |
571 | if (siginterrupt (SIGALRM, 1) != 0) | |
572 | perror ("adapt_open: error in siginterrupt"); | |
573 | #endif | |
574 | ||
575 | /* Set up read timeout timer. */ | |
576 | if ((void (*)) signal (SIGALRM, adapt_timer) == (void (*)) -1) | |
577 | perror ("adapt_open: error in signal"); | |
578 | #endif | |
579 | ||
580 | #if defined (LOG_FILE) | |
581 | log_file = fopen (LOG_FILE, "w"); | |
582 | if (log_file == NULL) | |
583 | perror_with_name (LOG_FILE); | |
584 | #endif | |
585 | ||
586 | /* Put this port into NORMAL mode, send the 'normal' character */ | |
587 | write(adapt_desc, "\ 1", 1); /* Control A */ | |
588 | write(adapt_desc, "\r", 1); | |
589 | expect_prompt (); | |
590 | ||
591 | /* Hello? Are you there? */ | |
592 | write (adapt_desc, "\r", 1); | |
593 | ||
594 | expect_prompt (); | |
595 | ||
596 | /* Clear any break points */ | |
597 | adapt_clear_breakpoints(); | |
598 | ||
599 | /* Determine the processor revision level */ | |
600 | prl = (unsigned int)read_register(CFG_REGNUM) >> 24; | |
601 | if (prl == 0x03) { | |
602 | processor_type = TYPE_A29000; | |
603 | } else if ((prl&0xf0) == 0x40) { /* 29030 = 0x4* */ | |
604 | processor_type = TYPE_A29030; | |
605 | fprintf_filtered(stderr,"WARNING: debugging of A29030 not tested.\n"); | |
606 | } else if ((prl&0xf0) == 0x20) { /* 29050 = 0x2* */ | |
607 | processor_type = TYPE_A29050; | |
608 | fprintf_filtered(stderr,"WARNING: debugging of A29050 not tested.\n"); | |
609 | } else { | |
610 | processor_type = TYPE_UNKNOWN; | |
611 | fprintf_filtered(stderr,"WARNING: processor type unknown.\n"); | |
612 | } | |
613 | ||
614 | /* Print out some stuff, letting the user now what's going on */ | |
615 | printf_filtered("Remote debugging on an %s connect to an Adapt via %s.\n", | |
616 | processor_name[processor_type],dev_name); | |
617 | /* FIXME: can this restriction be removed? */ | |
618 | printf_filtered("Remote debugging using virtual addresses works only\n"); | |
619 | printf_filtered("\twhen virtual addresses map 1:1 to physical addresses.\n"); | |
620 | if (processor_type != TYPE_A29050) { | |
621 | fprintf_filtered(stderr, | |
622 | "Freeze-mode debugging not available, and can only be done on an A29050.\n"); | |
623 | } | |
624 | DEXIT("adapt_open()"); | |
625 | } | |
626 | ||
627 | /* Close out all files and local state before this target loses control. */ | |
628 | ||
629 | static void | |
630 | adapt_close (quitting) | |
631 | int quitting; | |
632 | { | |
633 | ||
634 | DENTER("adapt_close()"); | |
635 | ||
636 | /* Clear any break points */ | |
637 | adapt_clear_breakpoints(); | |
638 | ||
639 | /* Put this port back into REMOTE mode */ | |
640 | if (adapt_stream) { | |
641 | fflush(adapt_stream); | |
642 | sleep(1); /* Let any output make it all the way back */ | |
643 | write(adapt_desc, "R\r", 2); | |
644 | } | |
645 | ||
646 | /* Due to a bug in Unix, fclose closes not only the stdio stream, | |
647 | but also the file descriptor. So we don't actually close | |
648 | adapt_desc. */ | |
649 | if (adapt_stream) | |
650 | fclose (adapt_stream); /* This also closes adapt_desc */ | |
651 | if (adapt_desc >= 0) | |
652 | /* close (adapt_desc); */ | |
653 | ||
654 | /* Do not try to close adapt_desc again, later in the program. */ | |
655 | adapt_stream = NULL; | |
656 | adapt_desc = -1; | |
657 | ||
658 | #if defined (LOG_FILE) | |
659 | if (log_file) { | |
660 | if (ferror (log_file)) | |
661 | printf_filtered ("Error writing log file.\n"); | |
662 | if (fclose (log_file) != 0) | |
663 | printf_filtered ("Error closing log file.\n"); | |
664 | log_file = NULL; | |
665 | } | |
666 | #endif | |
667 | DEXIT("adapt_close()"); | |
668 | } | |
669 | ||
670 | /* Attach to the target that is already loaded and possibly running */ | |
671 | static void | |
672 | adapt_attach (args, from_tty) | |
673 | char *args; | |
674 | int from_tty; | |
675 | { | |
676 | ||
677 | DENTER("adapt_attach()"); | |
678 | if (from_tty) | |
679 | printf_filtered ("Attaching to remote program %s.\n", prog_name); | |
680 | ||
681 | /* push_target(&adapt_ops); /* This done in adapt_open() */ | |
682 | ||
683 | mark_breakpoints_out (); | |
684 | ||
685 | /* Send the adapt a kill. It is ok if it is not already running */ | |
686 | fprintf(adapt_stream, "K\r"); fflush(adapt_stream); | |
687 | expect_prompt(); /* Slurp the echo */ | |
688 | ||
689 | /* We will get a task spawn event immediately. */ | |
690 | init_wait_for_inferior (); | |
691 | clear_proceed_status (); | |
692 | stop_soon_quietly = 1; | |
693 | wait_for_inferior (); | |
694 | stop_soon_quietly = 0; | |
695 | normal_stop (); | |
696 | DEXIT("adapt_attach()"); | |
697 | } | |
698 | ||
699 | ||
700 | /* Terminate the open connection to the remote debugger. | |
701 | Use this when you want to detach and do something else | |
702 | with your gdb. */ | |
703 | void | |
704 | adapt_detach (args,from_tty) | |
705 | char *args; | |
706 | int from_tty; | |
707 | { | |
708 | DENTER("adapt_detach()"); | |
709 | if (adapt_stream) { /* Send it on its way (tell it to continue) */ | |
710 | adapt_clear_breakpoints(); | |
711 | fprintf(adapt_stream,"G\r"); | |
712 | } | |
713 | ||
714 | pop_target(); /* calls adapt_close to do the real work */ | |
715 | if (from_tty) | |
716 | printf_filtered ("Ending remote %s debugging\n", target_shortname); | |
717 | DEXIT("adapt_detach()"); | |
718 | } | |
719 | ||
720 | /* Tell the remote machine to resume. */ | |
721 | ||
722 | void | |
723 | adapt_resume (step, sig) | |
724 | int step, sig; | |
725 | { | |
726 | DENTER("adapt_resume()"); | |
727 | if (step) | |
728 | { | |
729 | write (adapt_desc, "t 1,s\r", 6); | |
730 | /* Wait for the echo. */ | |
731 | expect ("t 1,s\r\n"); | |
732 | /* Then comes a line containing the instruction we stepped to. */ | |
733 | expect ("@"); | |
734 | /* Then we get the prompt. */ | |
735 | expect_prompt (); | |
736 | ||
737 | /* Force the next adapt_wait to return a trap. Not doing anything | |
738 | about I/O from the target means that the user has to type | |
739 | "continue" to see any. FIXME, this should be fixed. */ | |
740 | need_artificial_trap = 1; | |
741 | } | |
742 | else | |
743 | { | |
744 | write (adapt_desc, "G\r", 2); | |
745 | /* Swallow the echo. */ | |
746 | expect_prompt(); | |
747 | } | |
748 | DEXIT("adapt_resume()"); | |
749 | } | |
750 | ||
751 | /* Wait until the remote machine stops, then return, | |
752 | storing status in STATUS just as `wait' would. */ | |
753 | ||
754 | int | |
755 | adapt_wait (status) | |
756 | WAITTYPE *status; | |
757 | { | |
758 | /* Strings to look for. '?' means match any single character. | |
759 | Note that with the algorithm we use, the initial character | |
760 | of the string cannot recur in the string, or we will not | |
761 | find some cases of the string in the input. */ | |
762 | ||
763 | static char bpt[] = "@"; | |
764 | /* It would be tempting to look for "\n[__exit + 0x8]\n" | |
765 | but that requires loading symbols with "yc i" and even if | |
766 | we did do that we don't know that the file has symbols. */ | |
767 | static char exitmsg[] = "@????????I JMPTI GR121,LR0"; | |
768 | char *bp = bpt; | |
769 | char *ep = exitmsg; | |
770 | ||
771 | /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */ | |
772 | char swallowed[50]; | |
773 | /* Current position in swallowed. */ | |
774 | char *swallowed_p = swallowed; | |
775 | ||
776 | int ch; | |
777 | int ch_handled; | |
778 | int old_timeout = timeout; | |
779 | int old_immediate_quit = immediate_quit; | |
780 | ||
781 | DENTER("adapt_wait()"); | |
782 | ||
783 | WSETEXIT ((*status), 0); | |
784 | ||
785 | if (need_artificial_trap != 0) | |
786 | { | |
787 | WSETSTOP ((*status), SIGTRAP); | |
788 | need_artificial_trap--; | |
789 | return 0; | |
790 | } | |
791 | ||
792 | timeout = 0; /* Don't time out -- user program is running. */ | |
793 | immediate_quit = 1; /* Helps ability to QUIT */ | |
794 | while (1) { | |
795 | QUIT; /* Let user quit and leave process running */ | |
796 | ch_handled = 0; | |
797 | ch = readchar (); | |
798 | if (ch == *bp) { | |
799 | bp++; | |
800 | if (*bp == '\0') | |
801 | break; | |
802 | ch_handled = 1; | |
803 | ||
804 | *swallowed_p++ = ch; | |
805 | } else | |
806 | bp = bpt; | |
807 | if (ch == *ep || *ep == '?') { | |
808 | ep++; | |
809 | if (*ep == '\0') | |
810 | break; | |
811 | ||
812 | if (!ch_handled) | |
813 | *swallowed_p++ = ch; | |
814 | ch_handled = 1; | |
815 | } else | |
816 | ep = exitmsg; | |
817 | if (!ch_handled) { | |
818 | char *p; | |
819 | /* Print out any characters which have been swallowed. */ | |
820 | for (p = swallowed; p < swallowed_p; ++p) | |
821 | putc (*p, stdout); | |
822 | swallowed_p = swallowed; | |
823 | putc (ch, stdout); | |
824 | } | |
825 | } | |
826 | expect_prompt (); | |
827 | if (*bp== '\0') | |
828 | WSETSTOP ((*status), SIGTRAP); | |
829 | else | |
830 | WSETEXIT ((*status), 0); | |
831 | timeout = old_timeout; | |
832 | immediate_quit = old_immediate_quit; | |
833 | DEXIT("adapt_wait()"); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | /* Return the name of register number REGNO | |
838 | in the form input and output by adapt. | |
839 | ||
840 | Returns a pointer to a static buffer containing the answer. */ | |
841 | static char * | |
842 | get_reg_name (regno) | |
843 | int regno; | |
844 | { | |
845 | static char buf[80]; | |
846 | if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32 ) | |
847 | sprintf (buf, "GR%03d", regno - GR96_REGNUM + 96); | |
848 | #if defined(GR64_REGNUM) | |
849 | else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 ) | |
850 | sprintf (buf, "GR%03d", regno - GR64_REGNUM + 64); | |
851 | #endif | |
852 | else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) | |
853 | sprintf (buf, "LR%03d", regno - LR0_REGNUM); | |
854 | else if (regno == Q_REGNUM) | |
855 | strcpy (buf, "SR131"); | |
856 | else if (regno >= BP_REGNUM && regno <= CR_REGNUM) | |
857 | sprintf (buf, "SR%03d", regno - BP_REGNUM + 133); | |
858 | else if (regno == ALU_REGNUM) | |
859 | strcpy (buf, "SR132"); | |
860 | else if (regno >= IPC_REGNUM && regno <= IPB_REGNUM) | |
861 | sprintf (buf, "SR%03d", regno - IPC_REGNUM + 128); | |
862 | else if (regno >= VAB_REGNUM && regno <= LRU_REGNUM) { | |
863 | /* When a 29050 is in freeze-mode, read shadow pcs instead */ | |
864 | if ((regno >= NPC_REGNUM && regno <= PC2_REGNUM) && USE_SHADOW_PC) | |
865 | sprintf (buf, "SR%03d", regno - NPC_REGNUM + 20); | |
866 | else | |
867 | sprintf (buf, "SR%03d", regno - VAB_REGNUM); | |
868 | } | |
869 | else if (regno == GR1_REGNUM) | |
870 | strcpy (buf, "GR001"); | |
871 | return buf; | |
872 | } | |
873 | ||
874 | /* Read the remote registers. */ | |
875 | ||
876 | static void | |
877 | adapt_fetch_registers () | |
878 | { | |
879 | int reg_index; | |
880 | int regnum_index; | |
881 | char tempbuf[10]; | |
882 | int sreg_buf[16]; | |
883 | int i,j; | |
884 | ||
885 | DENTER("adapt_fetch_registers()"); | |
886 | ||
887 | /* | |
888 | * Global registers | |
889 | */ | |
890 | #if defined(GR64_REGNUM) | |
891 | write (adapt_desc, "dw gr64,gr95\r", 13); | |
892 | for (reg_index = 64, regnum_index = GR64_REGNUM; | |
893 | reg_index < 96; | |
894 | reg_index += 4, regnum_index += 4) | |
895 | { | |
896 | sprintf (tempbuf, "GR%03d ", reg_index); | |
897 | expect (tempbuf); | |
898 | get_hex_regs (4, regnum_index); | |
899 | expect ("\n"); | |
900 | } | |
901 | #endif | |
902 | write (adapt_desc, "dw gr96,gr127\r", 14); | |
903 | for (reg_index = 96, regnum_index = GR96_REGNUM; | |
904 | reg_index < 128; | |
905 | reg_index += 4, regnum_index += 4) | |
906 | { | |
907 | sprintf (tempbuf, "GR%03d ", reg_index); | |
908 | expect (tempbuf); | |
909 | get_hex_regs (4, regnum_index); | |
910 | expect ("\n"); | |
911 | } | |
912 | ||
913 | /* | |
914 | * Local registers | |
915 | */ | |
916 | for (i = 0; i < 128; i += 32) | |
917 | { | |
918 | /* The PC has a tendency to hang if we get these | |
919 | all in one fell swoop ("dw lr0,lr127"). */ | |
920 | sprintf (tempbuf, "dw lr%d\r", i); | |
921 | write (adapt_desc, tempbuf, strlen (tempbuf)); | |
922 | for (reg_index = i, regnum_index = LR0_REGNUM + i; | |
923 | reg_index < i + 32; | |
924 | reg_index += 4, regnum_index += 4) | |
925 | { | |
926 | sprintf (tempbuf, "LR%03d ", reg_index); | |
927 | expect (tempbuf); | |
928 | get_hex_regs (4, regnum_index); | |
929 | expect ("\n"); | |
930 | } | |
931 | } | |
932 | ||
933 | /* | |
934 | * Special registers | |
935 | */ | |
936 | sprintf (tempbuf, "dw sr0\r"); | |
937 | write (adapt_desc, tempbuf, strlen (tempbuf)); | |
938 | for (i=0 ; i<4 ; i++) { /* SR0 - SR14 */ | |
939 | sprintf (tempbuf, "SR%3d",i*4); | |
940 | expect(tempbuf); | |
941 | for (j=0 ; j < (i==3 ? 3 : 4) ; j++) | |
942 | sreg_buf[i*4 + j] = get_hex_word(); | |
943 | } | |
944 | expect_prompt(); | |
945 | /* | |
946 | * Read the pcs individually if we are in freeze mode. | |
947 | * See get_reg_name(), it translates the register names for the pcs to | |
948 | * the names of the shadow pcs. | |
949 | */ | |
950 | if (USE_SHADOW_PC) { | |
951 | sreg_buf[10] = read_register(NPC_REGNUM); /* pc0 */ | |
952 | sreg_buf[11] = read_register(PC_REGNUM); /* pc1 */ | |
953 | sreg_buf[12] = read_register(PC2_REGNUM); /* pc2 */ | |
954 | } | |
955 | for (i=0 ; i<14 ; i++) /* Supply vab -> lru */ | |
956 | supply_register(VAB_REGNUM+i,&sreg_buf[i]); | |
957 | sprintf (tempbuf, "dw sr128\r"); | |
958 | write (adapt_desc, tempbuf, strlen (tempbuf)); | |
959 | for (i=0 ; i<2 ; i++) { /* SR128 - SR135 */ | |
960 | sprintf (tempbuf, "SR%3d",128 + i*4); | |
961 | expect(tempbuf); | |
962 | for (j=0 ; j<4 ; j++) | |
963 | sreg_buf[i*4 + j] = get_hex_word(); | |
964 | } | |
965 | expect_prompt(); | |
966 | supply_register(IPC_REGNUM,&sreg_buf[0]); | |
967 | supply_register(IPA_REGNUM,&sreg_buf[1]); | |
968 | supply_register(IPB_REGNUM,&sreg_buf[2]); | |
969 | supply_register(Q_REGNUM, &sreg_buf[3]); | |
970 | /* Skip ALU */ | |
971 | supply_register(BP_REGNUM, &sreg_buf[5]); | |
972 | supply_register(FC_REGNUM, &sreg_buf[6]); | |
973 | supply_register(CR_REGNUM, &sreg_buf[7]); | |
974 | ||
975 | /* There doesn't seem to be any way to get these. */ | |
976 | { | |
977 | int val = -1; | |
978 | supply_register (FPE_REGNUM, &val); | |
979 | supply_register (INT_REGNUM, &val); | |
980 | supply_register (FPS_REGNUM, &val); | |
981 | supply_register (EXO_REGNUM, &val); | |
982 | } | |
983 | ||
984 | write (adapt_desc, "dw gr1,gr1\r", 11); | |
985 | expect ("GR001 "); | |
986 | get_hex_regs (1, GR1_REGNUM); | |
987 | expect_prompt (); | |
988 | ||
989 | DEXIT("adapt_fetch_registers()"); | |
990 | } | |
991 | ||
992 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
993 | */ | |
994 | static void | |
995 | adapt_fetch_register (regno) | |
996 | int regno; | |
997 | { | |
998 | DENTER("adapt_fetch_register()"); | |
999 | if (regno == -1) | |
1000 | adapt_fetch_registers (); | |
1001 | else | |
1002 | { | |
1003 | char *name = get_reg_name (regno); | |
1004 | fprintf (adapt_stream, "dw %s,%s\r", name, name); | |
1005 | expect (name); | |
1006 | expect (" "); | |
1007 | get_hex_regs (1, regno); | |
1008 | expect_prompt (); | |
1009 | } | |
1010 | DEXIT("adapt_fetch_register()"); | |
1011 | } | |
1012 | ||
1013 | /* Store the remote registers from the contents of the block REGS. */ | |
1014 | ||
1015 | static int | |
1016 | adapt_store_registers () | |
1017 | { | |
1018 | int i, j; | |
1019 | ||
1020 | DENTER("adapt_store_registers()"); | |
1021 | fprintf (adapt_stream, "s gr1,%x\r", read_register (GR1_REGNUM)); | |
1022 | expect_prompt (); | |
1023 | ||
1024 | #if defined(GR64_REGNUM) | |
1025 | for (j = 0; j < 32; j += 16) | |
1026 | { | |
1027 | fprintf (adapt_stream, "s gr%d,", j + 64); | |
1028 | for (i = 0; i < 15; ++i) | |
1029 | fprintf (adapt_stream, "%x,", read_register (GR64_REGNUM + j + i)); | |
1030 | fprintf (adapt_stream, "%x\r", read_register (GR64_REGNUM + j + 15)); | |
1031 | expect_prompt (); | |
1032 | } | |
1033 | #endif | |
1034 | for (j = 0; j < 32; j += 16) | |
1035 | { | |
1036 | fprintf (adapt_stream, "s gr%d,", j + 96); | |
1037 | for (i = 0; i < 15; ++i) | |
1038 | fprintf (adapt_stream, "%x,", read_register (GR96_REGNUM + j + i)); | |
1039 | fprintf (adapt_stream, "%x\r", read_register (GR96_REGNUM + j + 15)); | |
1040 | expect_prompt (); | |
1041 | } | |
1042 | ||
1043 | for (j = 0; j < 128; j += 16) | |
1044 | { | |
1045 | fprintf (adapt_stream, "s lr%d,", j); | |
1046 | for (i = 0; i < 15; ++i) | |
1047 | fprintf (adapt_stream, "%x,", read_register (LR0_REGNUM + j + i)); | |
1048 | fprintf (adapt_stream, "%x\r", read_register (LR0_REGNUM + j + 15)); | |
1049 | expect_prompt (); | |
1050 | } | |
1051 | ||
1052 | fprintf (adapt_stream, "s sr128,%x,%x,%x\r", read_register (IPC_REGNUM), | |
1053 | read_register (IPA_REGNUM), read_register (IPB_REGNUM)); | |
1054 | expect_prompt (); | |
1055 | fprintf (adapt_stream, "s sr133,%x,%x,%x\r", read_register (BP_REGNUM), | |
1056 | read_register (FC_REGNUM), read_register (CR_REGNUM)); | |
1057 | expect_prompt (); | |
1058 | fprintf (adapt_stream, "s sr131,%x\r", read_register (Q_REGNUM)); | |
1059 | expect_prompt (); | |
1060 | fprintf (adapt_stream, "s sr0,"); | |
1061 | for (i=0 ; i<7 ; ++i) | |
1062 | fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); | |
1063 | expect_prompt (); | |
1064 | fprintf (adapt_stream, "s sr7,"); | |
1065 | for (i=7; i<14 ; ++i) | |
1066 | fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); | |
1067 | expect_prompt (); | |
1068 | } | |
1069 | ||
1070 | /* Store register REGNO, or all if REGNO == -1. | |
1071 | Return errno value. */ | |
1072 | int | |
1073 | adapt_store_register (regno) | |
1074 | int regno; | |
1075 | { | |
1076 | /* printf("adapt_store_register() called.\n"); fflush(stdout); /* */ | |
1077 | if (regno == -1) | |
1078 | adapt_store_registers (); | |
1079 | else | |
1080 | { | |
1081 | char *name = get_reg_name (regno); | |
1082 | fprintf (adapt_stream, "s %s,%x\r", name, read_register (regno)); | |
1083 | /* Setting GR1 changes the numbers of all the locals, so | |
1084 | invalidate the register cache. Do this *after* calling | |
1085 | read_register, because we want read_register to return the | |
1086 | value that write_register has just stuffed into the registers | |
1087 | array, not the value of the register fetched from the | |
1088 | inferior. */ | |
1089 | if (regno == GR1_REGNUM) | |
1090 | registers_changed (); | |
1091 | expect_prompt (); | |
1092 | } | |
1093 | DEXIT("adapt_store_registers()"); | |
1094 | return 0; | |
1095 | } | |
1096 | ||
1097 | /* Get ready to modify the registers array. On machines which store | |
1098 | individual registers, this doesn't need to do anything. On machines | |
1099 | which store all the registers in one fell swoop, this makes sure | |
1100 | that registers contains all the registers from the program being | |
1101 | debugged. */ | |
1102 | ||
1103 | void | |
1104 | adapt_prepare_to_store () | |
1105 | { | |
1106 | /* Do nothing, since we can store individual regs */ | |
1107 | } | |
1108 | ||
1109 | static CORE_ADDR | |
1110 | translate_addr(addr) | |
1111 | CORE_ADDR addr; | |
1112 | { | |
1113 | #if defined(KERNEL_DEBUGGING) | |
1114 | /* Check for a virtual address in the kernel */ | |
1115 | /* Assume physical address of ublock is in paddr_u register */ | |
1116 | if (addr >= UVADDR) { | |
1117 | /* PADDR_U register holds the physical address of the ublock */ | |
1118 | CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM); | |
1119 | return(i + addr - (CORE_ADDR)UVADDR); | |
1120 | } else { | |
1121 | return(addr); | |
1122 | } | |
1123 | #else | |
1124 | return(addr); | |
1125 | #endif | |
1126 | } | |
1127 | ||
1128 | ||
1129 | /* FIXME! Merge these two. */ | |
1130 | int | |
1131 | adapt_xfer_inferior_memory (memaddr, myaddr, len, write) | |
1132 | CORE_ADDR memaddr; | |
1133 | char *myaddr; | |
1134 | int len; | |
1135 | int write; | |
1136 | { | |
1137 | ||
1138 | memaddr = translate_addr(memaddr); | |
1139 | ||
1140 | if (write) | |
1141 | return adapt_write_inferior_memory (memaddr, myaddr, len); | |
1142 | else | |
1143 | return adapt_read_inferior_memory (memaddr, myaddr, len); | |
1144 | } | |
1145 | ||
1146 | void | |
1147 | adapt_files_info () | |
1148 | { | |
1149 | printf_filtered("\tAttached to %s at %d baud and running program %s\n", | |
1150 | dev_name, baudrate, prog_name); | |
1151 | printf_filtered("\ton an %s processor.\n", processor_name[processor_type]); | |
1152 | } | |
1153 | ||
1154 | /* Copy LEN bytes of data from debugger memory at MYADDR | |
1155 | to inferior's memory at MEMADDR. Returns errno value. | |
1156 | * sb/sh instructions don't work on unaligned addresses, when TU=1. | |
1157 | */ | |
1158 | int | |
1159 | adapt_write_inferior_memory (memaddr, myaddr, len) | |
1160 | CORE_ADDR memaddr; | |
1161 | char *myaddr; | |
1162 | int len; | |
1163 | { | |
1164 | int i; | |
1165 | unsigned int cps; | |
1166 | ||
1167 | /* DENTER("adapt_write_inferior_memory()"); */ | |
1168 | ||
1169 | /* Turn TU bit off so we can do 'sb' commands */ | |
1170 | cps = read_register(CPS_REGNUM); | |
1171 | if (cps & 0x00000800) | |
1172 | write_register(CPS_REGNUM,cps&~(0x00000800)); | |
1173 | ||
1174 | for (i = 0; i < len; i++) | |
1175 | { | |
1176 | if ((i % 16) == 0) | |
1177 | fprintf (adapt_stream, "sb %x,", memaddr + i); | |
1178 | if ((i % 16) == 15 || i == len - 1) | |
1179 | { | |
1180 | fprintf (adapt_stream, "%x\r", ((unsigned char *)myaddr)[i]); | |
1181 | expect_prompt (); | |
1182 | } | |
1183 | else | |
1184 | fprintf (adapt_stream, "%x,", ((unsigned char *)myaddr)[i]); | |
1185 | } | |
1186 | /* Restore the old value of cps if the TU bit was on */ | |
1187 | if (cps & 0x00000800) | |
1188 | write_register(CPS_REGNUM,cps); | |
1189 | /* DEXIT("adapt_write_inferior_memory()"); */ | |
1190 | return len; | |
1191 | } | |
1192 | ||
1193 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result | |
1194 | at debugger address MYADDR. Returns errno value. */ | |
1195 | int | |
1196 | adapt_read_inferior_memory(memaddr, myaddr, len) | |
1197 | CORE_ADDR memaddr; | |
1198 | char *myaddr; | |
1199 | int len; | |
1200 | { | |
1201 | int i; | |
1202 | ||
1203 | /* Number of bytes read so far. */ | |
1204 | int count; | |
1205 | ||
1206 | /* Starting address of this pass. */ | |
1207 | unsigned long startaddr; | |
1208 | ||
1209 | /* Number of bytes to read in this pass. */ | |
1210 | int len_this_pass; | |
1211 | ||
1212 | /* Note that this code works correctly if startaddr is just less | |
1213 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
1214 | thing). That is, something like | |
1215 | adapt_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
1216 | works--it never adds len to memaddr and gets 0. */ | |
1217 | /* However, something like | |
1218 | adapt_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
1219 | doesn't need to work. Detect it and give up if there's an attempt | |
1220 | to do that. */ | |
1221 | /* DENTER("adapt_read_inferior_memory()"); */ | |
1222 | ||
1223 | if (((memaddr - 1) + len) < memaddr) | |
1224 | return EIO; | |
1225 | ||
1226 | startaddr = memaddr; | |
1227 | count = 0; | |
1228 | while (count < len) | |
1229 | { | |
1230 | len_this_pass = 16; | |
1231 | if ((startaddr % 16) != 0) | |
1232 | len_this_pass -= startaddr % 16; | |
1233 | if (len_this_pass > (len - count)) | |
1234 | len_this_pass = (len - count); | |
1235 | ||
1236 | fprintf (adapt_stream, "db %x,%x\r", startaddr, | |
1237 | (startaddr - 1) + len_this_pass); | |
1238 | ||
1239 | #ifdef NOTDEF /* Why do this */ | |
1240 | expect ("\n"); | |
1241 | /* Look for 8 hex digits. */ | |
1242 | i = 0; | |
1243 | while (1) | |
1244 | { | |
1245 | if (isxdigit (readchar ())) | |
1246 | ++i; | |
1247 | else | |
1248 | { | |
1249 | expect_prompt (); | |
1250 | error ("Hex digit expected from remote system."); | |
1251 | } | |
1252 | if (i >= 8) | |
1253 | break; | |
1254 | } | |
1255 | #endif /* NOTDEF */ | |
1256 | ||
1257 | expect (" "); | |
1258 | ||
1259 | for (i = 0; i < len_this_pass; i++) | |
1260 | get_hex_byte (&myaddr[count++]); | |
1261 | ||
1262 | expect_prompt (); | |
1263 | ||
1264 | startaddr += len_this_pass; | |
1265 | } | |
1266 | ||
1267 | /* DEXIT("adapt_read_inferior_memory()"); */ | |
1268 | return count; | |
1269 | } | |
1270 | ||
1271 | #define MAX_BREAKS 8 | |
1272 | static int num_brkpts=0; | |
1273 | static int | |
1274 | adapt_insert_breakpoint(addr, save) | |
1275 | CORE_ADDR addr; | |
1276 | char *save; /* Throw away, let adapt save instructions */ | |
1277 | { | |
1278 | DENTER("adapt_insert_breakpoint()"); | |
1279 | if (num_brkpts < MAX_BREAKS) { | |
1280 | num_brkpts++; | |
1281 | fprintf (adapt_stream, "B %x", addr); | |
1282 | fprintf (adapt_stream, "\r"); | |
1283 | expect_prompt (); | |
1284 | DEXIT("adapt_insert_breakpoint() success"); | |
1285 | return(0); /* Success */ | |
1286 | } else { | |
1287 | fprintf_filtered(stderr, | |
1288 | "Too many break points, break point not installed\n"); | |
1289 | DEXIT("adapt_insert_breakpoint() failure"); | |
1290 | return(1); /* Failure */ | |
1291 | } | |
1292 | ||
1293 | } | |
1294 | static int | |
1295 | adapt_remove_breakpoint(addr, save) | |
1296 | CORE_ADDR addr; | |
1297 | char *save; /* Throw away, let adapt save instructions */ | |
1298 | { | |
1299 | DENTER("adapt_remove_breakpoint()"); | |
1300 | if (num_brkpts > 0) { | |
1301 | num_brkpts--; | |
1302 | fprintf (adapt_stream, "BR %x", addr); | |
1303 | fprintf (adapt_stream, "\r"); | |
1304 | fflush (adapt_stream); | |
1305 | expect_prompt (); | |
1306 | } | |
1307 | DEXIT("adapt_remove_breakpoint()"); | |
1308 | return(0); | |
1309 | } | |
1310 | ||
1311 | /* Clear the adapts notion of what the break points are */ | |
1312 | static int | |
1313 | adapt_clear_breakpoints() | |
1314 | { | |
1315 | DENTER("adapt_clear_breakpoint()"); | |
1316 | if (adapt_stream) { | |
1317 | fprintf (adapt_stream, "BR"); /* Clear all break points */ | |
1318 | fprintf (adapt_stream, "\r"); | |
1319 | fflush(adapt_stream); | |
1320 | expect_prompt (); | |
1321 | } | |
1322 | num_brkpts = 0; | |
1323 | DEXIT("adapt_clear_breakpoint()"); | |
1324 | } | |
1325 | static void | |
1326 | adapt_mourn() | |
1327 | { | |
1328 | DENTER("adapt_mourn()"); | |
1329 | adapt_clear_breakpoints(); | |
1330 | pop_target (); /* Pop back to no-child state */ | |
1331 | generic_mourn_inferior (); | |
1332 | DEXIT("adapt_mourn()"); | |
1333 | } | |
1334 | ||
1335 | /* Display everthing we read in from the adapt until we match/see the | |
1336 | * specified string | |
1337 | */ | |
1338 | static int | |
1339 | display_until(str) | |
1340 | char *str; | |
1341 | { | |
1342 | int i=0,j,c; | |
1343 | ||
1344 | while (c=readchar()) { | |
1345 | if (c==str[i]) { | |
1346 | i++; | |
1347 | if (i == strlen(str)) return; | |
1348 | } else { | |
1349 | if (i) { | |
1350 | for (j=0 ; j<i ; j++) /* Put everthing we matched */ | |
1351 | putchar(str[j]); | |
1352 | i=0; | |
1353 | } | |
1354 | putchar(c); | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | } | |
1359 | ||
1360 | ||
1361 | /* Put a command string, in args, out to the adapt. The adapt is assumed to | |
1362 | be in raw mode, all writing/reading done through adapt_desc. | |
1363 | Ouput from the adapt is placed on the users terminal until the | |
1364 | prompt from the adapt is seen. | |
1365 | FIXME: Can't handle commands that take input. */ | |
1366 | ||
1367 | void | |
1368 | adapt_com (args, fromtty) | |
1369 | char *args; | |
1370 | int fromtty; | |
1371 | { | |
1372 | if (!adapt_stream) { | |
1373 | printf_filtered("Adapt not open. Use the 'target' command to open.\n"); | |
1374 | return; | |
1375 | } | |
1376 | ||
1377 | /* Clear all input so only command relative output is displayed */ | |
1378 | slurp_input(); | |
1379 | ||
1380 | switch(islower(args[0]) ? toupper(args[0]) : args[0]) { | |
1381 | default: | |
1382 | printf_filtered("Unknown/Unimplemented adapt command '%s'\n",args); | |
1383 | break; | |
1384 | case 'G': /* Go, begin execution */ | |
1385 | write(adapt_desc,args,strlen(args)); | |
1386 | write(adapt_desc,"\r",1); | |
1387 | expect_prompt(); | |
1388 | break; | |
1389 | case 'B': /* Break points, B or BR */ | |
1390 | case 'C': /* Check current 29k status (running/halted) */ | |
1391 | case 'D': /* Display data/registers */ | |
1392 | case 'I': /* Input from i/o space */ | |
1393 | case 'J': /* Jam an instruction */ | |
1394 | case 'K': /* Kill, stop execution */ | |
1395 | case 'L': /* Disassemble */ | |
1396 | case 'O': /* Output to i/o space */ | |
1397 | case 'T': /* Trace */ | |
1398 | case 'P': /* Pulse an input line */ | |
1399 | case 'X': /* Examine special purpose registers */ | |
1400 | case 'Z': /* Display trace buffer */ | |
1401 | write(adapt_desc,args,strlen(args)); | |
1402 | write(adapt_desc,"\r",1); | |
1403 | expect(args); /* Don't display the command */ | |
1404 | display_until("# "); | |
1405 | break; | |
1406 | /* Begin commands that take input in the form 'c x,y[,z...]' */ | |
1407 | case 'S': /* Set memory or register */ | |
1408 | if (index(args,',')) { /* Assume it is properly formatted */ | |
1409 | write(adapt_desc,args,strlen(args)); | |
1410 | write(adapt_desc,"\r",1); | |
1411 | expect_prompt(); | |
1412 | } | |
1413 | break; | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | /* Define the target subroutine names */ | |
1418 | ||
1419 | struct target_ops adapt_ops = { | |
1420 | "adapt", "Remote AMD `Adapt' target", | |
1421 | "Remote debug an AMD 290*0 using an `Adapt' monitor via RS232", | |
1422 | adapt_open, adapt_close, | |
1423 | adapt_attach, adapt_detach, adapt_resume, adapt_wait, | |
1424 | adapt_fetch_register, adapt_store_register, | |
1425 | adapt_prepare_to_store, 0, 0, /* conv_to, conv_from */ | |
1426 | adapt_xfer_inferior_memory, | |
1427 | adapt_files_info, | |
1428 | adapt_insert_breakpoint, adapt_remove_breakpoint, /* Breakpoints */ | |
1429 | 0, 0, 0, 0, 0, /* Terminal handling */ | |
1430 | adapt_kill, /* FIXME, kill */ | |
1431 | adapt_load, | |
1432 | call_function_by_hand, | |
1433 | 0, /* lookup_symbol */ | |
1434 | adapt_create_inferior, /* create_inferior */ | |
1435 | adapt_mourn, /* mourn_inferior FIXME */ | |
1436 | process_stratum, 0, /* next */ | |
1437 | 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ | |
1438 | 0,0, /* Section pointers */ | |
1439 | OPS_MAGIC, /* Always the last thing */ | |
1440 | }; | |
1441 | ||
1442 | void | |
1443 | _initialize_remote_adapt () | |
1444 | { | |
1445 | add_target (&adapt_ops); | |
1446 | add_com ("adapt <command>", class_obscure, adapt_com, | |
1447 | "Send a command to the AMD Adapt remote monitor."); | |
1448 | } |