Commit | Line | Data |
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c906108c SS |
1 | /* Target communications support for Macraigor Systems' On-Chip Debugging |
2 | Copyright 1996, 1997 Free Software Foundation, Inc. | |
3 | ||
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "gdbcore.h" | |
23 | #include "gdb_string.h" | |
24 | #include <fcntl.h> | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "bfd.h" | |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
03f2053f | 30 | #include "gdb_wait.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "dcache.h" | |
35 | #include <sys/types.h> | |
36 | #include <signal.h> | |
37 | #include "serial.h" | |
38 | #include "ocd.h" | |
39 | ||
40 | /* Prototypes for local functions */ | |
41 | ||
a14ed312 | 42 | static int ocd_read_bytes (CORE_ADDR memaddr, char *myaddr, int len); |
c906108c | 43 | |
a14ed312 | 44 | static int ocd_start_remote (PTR dummy); |
c906108c | 45 | |
a14ed312 | 46 | static int readchar (int timeout); |
c906108c | 47 | |
a14ed312 | 48 | static void reset_packet (void); |
c906108c | 49 | |
a14ed312 | 50 | static void output_packet (void); |
c906108c | 51 | |
a14ed312 | 52 | static int get_quoted_char (int timeout); |
c906108c | 53 | |
a14ed312 | 54 | static void put_quoted_char (int c); |
c906108c | 55 | |
a14ed312 | 56 | static void ocd_interrupt (int signo); |
c906108c | 57 | |
a14ed312 | 58 | static void ocd_interrupt_twice (int signo); |
c906108c | 59 | |
a14ed312 | 60 | static void interrupt_query (void); |
c906108c | 61 | |
a14ed312 | 62 | static unsigned char *ocd_do_command (int cmd, int *statusp, int *lenp); |
c906108c | 63 | |
a14ed312 | 64 | static void ocd_put_packet (unsigned char *packet, int pktlen); |
c906108c | 65 | |
a14ed312 | 66 | static unsigned char *ocd_get_packet (int cmd, int *pktlen, int timeout); |
c906108c SS |
67 | |
68 | static struct target_ops *current_ops = NULL; | |
69 | ||
70 | static int last_run_status; | |
71 | ||
72 | /* This was 5 seconds, which is a long time to sit and wait. | |
73 | Unless this is going though some terminal server or multiplexer or | |
74 | other form of hairy serial connection, I would think 2 seconds would | |
75 | be plenty. */ | |
76 | ||
77 | #if 0 | |
78 | /* FIXME: Change to allow option to set timeout value on a per target | |
79 | basis. */ | |
80 | static int remote_timeout = 2; | |
81 | #endif | |
82 | ||
83 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
84 | ocd_open knows that we don't have a file open when the program | |
85 | starts. */ | |
86 | static serial_t ocd_desc = NULL; | |
87 | \f | |
88 | void | |
fba45db2 | 89 | ocd_error (char *s, int error_code) |
c906108c SS |
90 | { |
91 | char buf[100]; | |
92 | ||
93 | fputs_filtered (s, gdb_stderr); | |
94 | fputs_filtered (" ", gdb_stderr); | |
95 | ||
96 | switch (error_code) | |
97 | { | |
c5aa993b JM |
98 | case 0x1: |
99 | s = "Unknown fault"; | |
100 | break; | |
101 | case 0x2: | |
102 | s = "Power failed"; | |
103 | break; | |
104 | case 0x3: | |
105 | s = "Cable disconnected"; | |
106 | break; | |
107 | case 0x4: | |
108 | s = "Couldn't enter OCD mode"; | |
109 | break; | |
110 | case 0x5: | |
111 | s = "Target stuck in reset"; | |
112 | break; | |
113 | case 0x6: | |
114 | s = "OCD hasn't been initialized"; | |
115 | break; | |
116 | case 0x7: | |
117 | s = "Write verify failed"; | |
118 | break; | |
119 | case 0x8: | |
120 | s = "Reg buff error (during MPC5xx fp reg read/write)"; | |
121 | break; | |
122 | case 0x9: | |
123 | s = "Invalid CPU register access attempt failed"; | |
124 | break; | |
125 | case 0x11: | |
126 | s = "Bus error"; | |
127 | break; | |
128 | case 0x12: | |
129 | s = "Checksum error"; | |
130 | break; | |
131 | case 0x13: | |
132 | s = "Illegal command"; | |
133 | break; | |
134 | case 0x14: | |
135 | s = "Parameter error"; | |
136 | break; | |
137 | case 0x15: | |
138 | s = "Internal error"; | |
139 | break; | |
140 | case 0x80: | |
141 | s = "Flash erase error"; | |
142 | break; | |
c906108c SS |
143 | default: |
144 | sprintf (buf, "Unknown error code %d", error_code); | |
145 | s = buf; | |
146 | } | |
147 | ||
148 | error (s); | |
149 | } | |
150 | ||
151 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
152 | ||
153 | int | |
fba45db2 | 154 | ocd_thread_alive (int th) |
c906108c SS |
155 | { |
156 | return 1; | |
157 | } | |
158 | \f | |
159 | /* Clean up connection to a remote debugger. */ | |
160 | ||
161 | /* ARGSUSED */ | |
162 | void | |
fba45db2 | 163 | ocd_close (int quitting) |
c906108c SS |
164 | { |
165 | if (ocd_desc) | |
166 | SERIAL_CLOSE (ocd_desc); | |
167 | ocd_desc = NULL; | |
168 | } | |
169 | ||
170 | /* Stub for catch_errors. */ | |
171 | ||
172 | static int | |
fba45db2 | 173 | ocd_start_remote (PTR dummy) |
c906108c SS |
174 | { |
175 | unsigned char buf[10], *p; | |
176 | int pktlen; | |
177 | int status; | |
178 | int error_code; | |
179 | int speed; | |
180 | enum ocd_target_type target_type; | |
181 | ||
c5aa993b | 182 | target_type = *(enum ocd_target_type *) dummy; |
c906108c | 183 | |
8edbea78 | 184 | immediate_quit++; /* Allow user to interrupt it */ |
c906108c | 185 | |
c5aa993b | 186 | SERIAL_SEND_BREAK (ocd_desc); /* Wake up the wiggler */ |
c906108c SS |
187 | |
188 | speed = 80; /* Divide clock by 4000 */ | |
189 | ||
190 | buf[0] = OCD_INIT; | |
191 | buf[1] = speed >> 8; | |
192 | buf[2] = speed & 0xff; | |
193 | buf[3] = target_type; | |
194 | ocd_put_packet (buf, 4); /* Init OCD params */ | |
195 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
196 | ||
197 | if (pktlen < 2) | |
198 | error ("Truncated response packet from OCD device"); | |
199 | ||
200 | status = p[1]; | |
201 | error_code = p[2]; | |
202 | ||
203 | if (error_code != 0) | |
204 | ocd_error ("OCD_INIT:", error_code); | |
205 | ||
206 | ocd_do_command (OCD_AYT, &status, &pktlen); | |
207 | ||
208 | p = ocd_do_command (OCD_GET_VERSION, &status, &pktlen); | |
209 | ||
210 | printf_unfiltered ("[Wiggler version %x.%x, capability 0x%x]\n", | |
211 | p[0], p[1], (p[2] << 16) | p[3]); | |
212 | ||
213 | #if 0 | |
214 | /* Reset the target */ | |
215 | ||
216 | ocd_do_command (OCD_RESET_RUN, &status, &pktlen); | |
c5aa993b | 217 | /* ocd_do_command (OCD_RESET, &status, &pktlen); */ |
c906108c SS |
218 | #endif |
219 | ||
220 | /* If processor is still running, stop it. */ | |
221 | ||
222 | if (!(status & OCD_FLAG_BDM)) | |
223 | ocd_stop (); | |
224 | ||
225 | #if 1 | |
226 | /* When using a target box, we want to asynchronously return status when | |
227 | target stops. The OCD_SET_CTL_FLAGS command is ignored by Wigglers.dll | |
228 | when using a parallel Wiggler */ | |
229 | buf[0] = OCD_SET_CTL_FLAGS; | |
230 | buf[1] = 0; | |
231 | buf[2] = 1; | |
232 | ocd_put_packet (buf, 3); | |
233 | ||
234 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
235 | ||
236 | if (pktlen < 2) | |
237 | error ("Truncated response packet from OCD device"); | |
238 | ||
239 | status = p[1]; | |
240 | error_code = p[2]; | |
241 | ||
242 | if (error_code != 0) | |
243 | ocd_error ("OCD_SET_CTL_FLAGS:", error_code); | |
244 | #endif | |
245 | ||
8edbea78 | 246 | immediate_quit--; |
c906108c SS |
247 | |
248 | /* This is really the job of start_remote however, that makes an assumption | |
249 | that the target is about to print out a status message of some sort. That | |
250 | doesn't happen here (in fact, it may not be possible to get the monitor to | |
251 | send the appropriate packet). */ | |
252 | ||
253 | flush_cached_frames (); | |
254 | registers_changed (); | |
255 | stop_pc = read_pc (); | |
256 | set_current_frame (create_new_frame (read_fp (), stop_pc)); | |
257 | select_frame (get_current_frame (), 0); | |
258 | print_stack_frame (selected_frame, -1, 1); | |
259 | ||
260 | buf[0] = OCD_LOG_FILE; | |
c5aa993b | 261 | buf[1] = 3; /* close existing WIGGLERS.LOG */ |
c906108c SS |
262 | ocd_put_packet (buf, 2); |
263 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
264 | ||
265 | buf[0] = OCD_LOG_FILE; | |
c5aa993b | 266 | buf[1] = 2; /* append to existing WIGGLERS.LOG */ |
c906108c SS |
267 | ocd_put_packet (buf, 2); |
268 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
269 | ||
270 | return 1; | |
271 | } | |
272 | ||
273 | /* Open a connection to a remote debugger. | |
274 | NAME is the filename used for communication. */ | |
275 | ||
276 | static DCACHE *ocd_dcache; | |
277 | ||
278 | void | |
fba45db2 KB |
279 | ocd_open (char *name, int from_tty, enum ocd_target_type target_type, |
280 | struct target_ops *ops) | |
c906108c SS |
281 | { |
282 | unsigned char buf[10], *p; | |
c906108c SS |
283 | int pktlen; |
284 | ||
285 | if (name == 0) | |
286 | error ("To open an OCD connection, you need to specify the\n\ | |
287 | device the OCD device is attached to (e.g. /dev/ttya)."); | |
288 | ||
289 | target_preopen (from_tty); | |
290 | ||
291 | current_ops = ops; | |
292 | ||
293 | unpush_target (current_ops); | |
294 | ||
f1d7622b C |
295 | if (!ocd_dcache) |
296 | ocd_dcache = dcache_init (ocd_read_bytes, ocd_write_bytes); | |
297 | else | |
e99586d5 | 298 | dcache_invd (ocd_dcache); |
c906108c | 299 | |
c5aa993b JM |
300 | if (strncmp (name, "wiggler", 7) == 0) |
301 | { | |
302 | ocd_desc = SERIAL_OPEN ("ocd"); | |
303 | if (!ocd_desc) | |
304 | perror_with_name (name); | |
305 | ||
306 | buf[0] = OCD_LOG_FILE; | |
307 | buf[1] = 1; /* open new or overwrite existing WIGGLERS.LOG */ | |
308 | ocd_put_packet (buf, 2); | |
309 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
310 | ||
311 | buf[0] = OCD_SET_CONNECTION; | |
312 | buf[1] = 0x01; /* atoi (name[11]); */ | |
313 | ocd_put_packet (buf, 2); | |
314 | p = ocd_get_packet (buf[0], &pktlen, remote_timeout); | |
315 | } | |
316 | else | |
317 | /* not using Wigglers.dll */ | |
318 | { | |
319 | ocd_desc = SERIAL_OPEN (name); | |
320 | if (!ocd_desc) | |
321 | perror_with_name (name); | |
322 | } | |
c906108c SS |
323 | |
324 | if (baud_rate != -1) | |
325 | { | |
326 | if (SERIAL_SETBAUDRATE (ocd_desc, baud_rate)) | |
327 | { | |
328 | SERIAL_CLOSE (ocd_desc); | |
329 | perror_with_name (name); | |
330 | } | |
331 | } | |
332 | ||
333 | SERIAL_RAW (ocd_desc); | |
334 | ||
335 | /* If there is something sitting in the buffer we might take it as a | |
336 | response to a command, which would be bad. */ | |
337 | SERIAL_FLUSH_INPUT (ocd_desc); | |
338 | ||
339 | if (from_tty) | |
340 | { | |
341 | puts_filtered ("Remote target wiggler connected to "); | |
342 | puts_filtered (name); | |
343 | puts_filtered ("\n"); | |
344 | } | |
345 | push_target (current_ops); /* Switch to using remote target now */ | |
346 | ||
347 | /* Without this, some commands which require an active target (such as kill) | |
348 | won't work. This variable serves (at least) double duty as both the pid | |
349 | of the target process (if it has such), and as a flag indicating that a | |
350 | target is active. These functions should be split out into seperate | |
351 | variables, especially since GDB will someday have a notion of debugging | |
352 | several processes. */ | |
353 | ||
354 | inferior_pid = 42000; | |
355 | /* Start the remote connection; if error (0), discard this target. | |
356 | In particular, if the user quits, be sure to discard it | |
357 | (we'd be in an inconsistent state otherwise). */ | |
358 | if (!catch_errors (ocd_start_remote, &target_type, | |
359 | "Couldn't establish connection to remote target\n", | |
360 | RETURN_MASK_ALL)) | |
361 | { | |
c5aa993b | 362 | pop_target (); |
c906108c SS |
363 | error ("Failed to connect to OCD."); |
364 | } | |
365 | } | |
366 | ||
367 | /* This takes a program previously attached to and detaches it. After | |
368 | this is done, GDB can be used to debug some other program. We | |
369 | better not have left any breakpoints in the target program or it'll | |
370 | die when it hits one. */ | |
371 | ||
372 | void | |
fba45db2 | 373 | ocd_detach (char *args, int from_tty) |
c906108c SS |
374 | { |
375 | if (args) | |
376 | error ("Argument given to \"detach\" when remotely debugging."); | |
377 | ||
378 | pop_target (); | |
379 | if (from_tty) | |
380 | puts_filtered ("Ending remote debugging.\n"); | |
381 | } | |
382 | \f | |
383 | /* Tell the remote machine to resume. */ | |
384 | ||
385 | void | |
fba45db2 | 386 | ocd_resume (int pid, int step, enum target_signal siggnal) |
c906108c SS |
387 | { |
388 | int pktlen; | |
389 | ||
e99586d5 | 390 | dcache_invd (ocd_dcache); |
c906108c SS |
391 | |
392 | if (step) | |
393 | ocd_do_command (OCD_STEP, &last_run_status, &pktlen); | |
394 | else | |
395 | ocd_do_command (OCD_RUN, &last_run_status, &pktlen); | |
396 | } | |
397 | \f | |
398 | void | |
fba45db2 | 399 | ocd_stop (void) |
c906108c SS |
400 | { |
401 | int status; | |
402 | int pktlen; | |
403 | ||
404 | ocd_do_command (OCD_STOP, &status, &pktlen); | |
405 | ||
406 | if (!(status & OCD_FLAG_BDM)) | |
407 | error ("Can't stop target via BDM"); | |
408 | } | |
409 | ||
410 | static volatile int ocd_interrupt_flag; | |
411 | ||
412 | /* Send ^C to target to halt it. Target will respond, and send us a | |
413 | packet. */ | |
414 | ||
415 | static void | |
fba45db2 | 416 | ocd_interrupt (int signo) |
c906108c SS |
417 | { |
418 | /* If this doesn't work, try more severe steps. */ | |
419 | signal (signo, ocd_interrupt_twice); | |
c5aa993b | 420 | |
c906108c SS |
421 | if (remote_debug) |
422 | printf_unfiltered ("ocd_interrupt called\n"); | |
423 | ||
424 | { | |
425 | char buf[1]; | |
426 | ||
427 | ocd_stop (); | |
428 | buf[0] = OCD_AYT; | |
429 | ocd_put_packet (buf, 1); | |
430 | ocd_interrupt_flag = 1; | |
431 | } | |
432 | } | |
433 | ||
c5aa993b | 434 | static void (*ofunc) (); |
c906108c SS |
435 | |
436 | /* The user typed ^C twice. */ | |
437 | static void | |
fba45db2 | 438 | ocd_interrupt_twice (int signo) |
c906108c SS |
439 | { |
440 | signal (signo, ofunc); | |
c5aa993b | 441 | |
c906108c SS |
442 | interrupt_query (); |
443 | ||
444 | signal (signo, ocd_interrupt); | |
445 | } | |
446 | ||
447 | /* Ask the user what to do when an interrupt is received. */ | |
448 | ||
449 | static void | |
fba45db2 | 450 | interrupt_query (void) |
c906108c SS |
451 | { |
452 | target_terminal_ours (); | |
453 | ||
454 | if (query ("Interrupted while waiting for the program.\n\ | |
455 | Give up (and stop debugging it)? ")) | |
456 | { | |
457 | target_mourn_inferior (); | |
458 | return_to_top_level (RETURN_QUIT); | |
459 | } | |
460 | ||
461 | target_terminal_inferior (); | |
462 | } | |
463 | ||
464 | /* If nonzero, ignore the next kill. */ | |
465 | static int kill_kludge; | |
466 | ||
467 | /* Wait until the remote machine stops, then return, | |
468 | storing status in STATUS just as `wait' would. | |
469 | Returns "pid" (though it's not clear what, if anything, that | |
470 | means in the case of this target). */ | |
471 | ||
472 | int | |
fba45db2 | 473 | ocd_wait (void) |
c906108c SS |
474 | { |
475 | unsigned char *p; | |
476 | int error_code; | |
477 | int pktlen; | |
478 | char buf[1]; | |
479 | ||
480 | ocd_interrupt_flag = 0; | |
481 | ||
482 | /* Target might already be stopped by the time we get here. */ | |
483 | /* If we aren't already stopped, we need to loop until we've dropped | |
484 | back into BDM mode */ | |
485 | ||
486 | while (!(last_run_status & OCD_FLAG_BDM)) | |
487 | { | |
488 | buf[0] = OCD_AYT; | |
489 | ocd_put_packet (buf, 1); | |
490 | p = ocd_get_packet (OCD_AYT, &pktlen, -1); | |
491 | ||
492 | ofunc = (void (*)()) signal (SIGINT, ocd_interrupt); | |
493 | signal (SIGINT, ofunc); | |
494 | ||
495 | if (pktlen < 2) | |
496 | error ("Truncated response packet from OCD device"); | |
497 | ||
498 | last_run_status = p[1]; | |
499 | error_code = p[2]; | |
500 | ||
501 | if (error_code != 0) | |
502 | ocd_error ("target_wait:", error_code); | |
503 | ||
504 | if (last_run_status & OCD_FLAG_PWF) | |
505 | error ("OCD device lost VCC at BDM interface."); | |
506 | else if (last_run_status & OCD_FLAG_CABLE_DISC) | |
507 | error ("OCD device cable appears to have been disconnected."); | |
508 | } | |
509 | ||
510 | if (ocd_interrupt_flag) | |
511 | return 1; | |
512 | else | |
513 | return 0; | |
514 | } | |
515 | ||
516 | /* Read registers from the OCD device. Specify the starting and ending | |
517 | register number. Return the number of regs actually read in *NUMREGS. | |
518 | Returns a pointer to a static array containing the register contents. */ | |
519 | ||
520 | unsigned char * | |
fba45db2 | 521 | ocd_read_bdm_registers (int first_bdm_regno, int last_bdm_regno, int *reglen) |
c906108c SS |
522 | { |
523 | unsigned char buf[10]; | |
524 | int i; | |
525 | unsigned char *p; | |
526 | unsigned char *regs; | |
527 | int error_code, status; | |
528 | int pktlen; | |
529 | ||
530 | buf[0] = OCD_READ_REGS; | |
531 | buf[1] = first_bdm_regno >> 8; | |
532 | buf[2] = first_bdm_regno & 0xff; | |
533 | buf[3] = last_bdm_regno >> 8; | |
534 | buf[4] = last_bdm_regno & 0xff; | |
535 | ||
536 | ocd_put_packet (buf, 5); | |
537 | p = ocd_get_packet (OCD_READ_REGS, &pktlen, remote_timeout); | |
538 | ||
539 | status = p[1]; | |
540 | error_code = p[2]; | |
541 | ||
542 | if (error_code != 0) | |
543 | ocd_error ("read_bdm_registers:", error_code); | |
544 | ||
545 | i = p[3]; | |
546 | if (i == 0) | |
547 | i = 256; | |
548 | ||
549 | if (i > pktlen - 4 | |
550 | || ((i & 3) != 0)) | |
551 | error ("Register block size bad: %d", i); | |
552 | ||
553 | *reglen = i; | |
554 | ||
555 | regs = p + 4; | |
556 | ||
557 | return regs; | |
558 | } | |
559 | ||
560 | /* Read register BDM_REGNO and returns its value ala read_register() */ | |
561 | ||
562 | CORE_ADDR | |
fba45db2 | 563 | ocd_read_bdm_register (int bdm_regno) |
c906108c SS |
564 | { |
565 | int reglen; | |
566 | unsigned char *p; | |
567 | CORE_ADDR regval; | |
568 | ||
569 | p = ocd_read_bdm_registers (bdm_regno, bdm_regno, ®len); | |
570 | regval = extract_unsigned_integer (p, reglen); | |
571 | ||
572 | return regval; | |
573 | } | |
574 | ||
575 | void | |
fba45db2 | 576 | ocd_write_bdm_registers (int first_bdm_regno, unsigned char *regptr, int reglen) |
c906108c SS |
577 | { |
578 | unsigned char *buf; | |
579 | unsigned char *p; | |
580 | int error_code, status; | |
581 | int pktlen; | |
582 | ||
583 | buf = alloca (4 + reglen); | |
584 | ||
585 | buf[0] = OCD_WRITE_REGS; | |
586 | buf[1] = first_bdm_regno >> 8; | |
587 | buf[2] = first_bdm_regno & 0xff; | |
588 | buf[3] = reglen; | |
589 | memcpy (buf + 4, regptr, reglen); | |
590 | ||
591 | ocd_put_packet (buf, 4 + reglen); | |
592 | p = ocd_get_packet (OCD_WRITE_REGS, &pktlen, remote_timeout); | |
593 | ||
594 | if (pktlen < 3) | |
595 | error ("Truncated response packet from OCD device"); | |
596 | ||
597 | status = p[1]; | |
598 | error_code = p[2]; | |
599 | ||
600 | if (error_code != 0) | |
601 | ocd_error ("ocd_write_bdm_registers:", error_code); | |
602 | } | |
603 | ||
604 | void | |
fba45db2 | 605 | ocd_write_bdm_register (int bdm_regno, CORE_ADDR reg) |
c906108c SS |
606 | { |
607 | unsigned char buf[4]; | |
608 | ||
609 | store_unsigned_integer (buf, 4, reg); | |
610 | ||
611 | ocd_write_bdm_registers (bdm_regno, buf, 4); | |
612 | } | |
613 | \f | |
c5aa993b | 614 | void |
fba45db2 | 615 | ocd_prepare_to_store (void) |
c906108c SS |
616 | { |
617 | } | |
618 | \f | |
619 | /* Write memory data directly to the remote machine. | |
620 | This does not inform the data cache; the data cache uses this. | |
621 | MEMADDR is the address in the remote memory space. | |
622 | MYADDR is the address of the buffer in our space. | |
623 | LEN is the number of bytes. | |
624 | ||
625 | Returns number of bytes transferred, or 0 for error. */ | |
626 | ||
627 | static int write_mem_command = OCD_WRITE_MEM; | |
628 | ||
629 | int | |
fba45db2 | 630 | ocd_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
631 | { |
632 | char buf[256 + 10]; | |
633 | unsigned char *p; | |
634 | int origlen; | |
635 | ||
636 | origlen = len; | |
637 | ||
638 | buf[0] = write_mem_command; | |
639 | buf[5] = 1; /* Write as bytes */ | |
640 | buf[6] = 0; /* Don't verify */ | |
641 | ||
642 | while (len > 0) | |
643 | { | |
644 | int numbytes; | |
645 | int pktlen; | |
646 | int status, error_code; | |
647 | ||
648 | numbytes = min (len, 256 - 8); | |
649 | ||
650 | buf[1] = memaddr >> 24; | |
651 | buf[2] = memaddr >> 16; | |
652 | buf[3] = memaddr >> 8; | |
653 | buf[4] = memaddr; | |
654 | ||
655 | buf[7] = numbytes; | |
656 | ||
657 | memcpy (&buf[8], myaddr, numbytes); | |
658 | ocd_put_packet (buf, 8 + numbytes); | |
659 | p = ocd_get_packet (OCD_WRITE_MEM, &pktlen, remote_timeout); | |
660 | if (pktlen < 3) | |
661 | error ("Truncated response packet from OCD device"); | |
662 | ||
663 | status = p[1]; | |
664 | error_code = p[2]; | |
665 | ||
666 | if (error_code == 0x11) /* Got a bus error? */ | |
667 | { | |
668 | CORE_ADDR error_address; | |
669 | ||
670 | error_address = p[3] << 24; | |
671 | error_address |= p[4] << 16; | |
672 | error_address |= p[5] << 8; | |
673 | error_address |= p[6]; | |
674 | numbytes = error_address - memaddr; | |
675 | ||
676 | len -= numbytes; | |
677 | ||
678 | errno = EIO; | |
679 | ||
680 | break; | |
681 | } | |
682 | else if (error_code != 0) | |
683 | ocd_error ("ocd_write_bytes:", error_code); | |
684 | ||
685 | len -= numbytes; | |
686 | memaddr += numbytes; | |
687 | myaddr += numbytes; | |
688 | } | |
689 | ||
690 | return origlen - len; | |
691 | } | |
692 | ||
693 | /* Read memory data directly from the remote machine. | |
694 | This does not use the data cache; the data cache uses this. | |
695 | MEMADDR is the address in the remote memory space. | |
696 | MYADDR is the address of the buffer in our space. | |
697 | LEN is the number of bytes. | |
698 | ||
699 | Returns number of bytes transferred, or 0 for error. */ | |
700 | ||
701 | static int | |
fba45db2 | 702 | ocd_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
703 | { |
704 | char buf[256 + 10]; | |
705 | unsigned char *p; | |
706 | int origlen; | |
707 | ||
708 | origlen = len; | |
709 | ||
710 | buf[0] = OCD_READ_MEM; | |
711 | buf[5] = 1; /* Read as bytes */ | |
712 | ||
713 | while (len > 0) | |
714 | { | |
715 | int numbytes; | |
716 | int pktlen; | |
717 | int status, error_code; | |
718 | ||
719 | numbytes = min (len, 256 - 7); | |
720 | ||
721 | buf[1] = memaddr >> 24; | |
722 | buf[2] = memaddr >> 16; | |
723 | buf[3] = memaddr >> 8; | |
724 | buf[4] = memaddr; | |
725 | ||
726 | buf[6] = numbytes; | |
727 | ||
728 | ocd_put_packet (buf, 7); | |
729 | p = ocd_get_packet (OCD_READ_MEM, &pktlen, remote_timeout); | |
730 | if (pktlen < 4) | |
731 | error ("Truncated response packet from OCD device"); | |
732 | ||
733 | status = p[1]; | |
734 | error_code = p[2]; | |
735 | ||
736 | if (error_code == 0x11) /* Got a bus error? */ | |
737 | { | |
738 | CORE_ADDR error_address; | |
739 | ||
740 | error_address = p[3] << 24; | |
741 | error_address |= p[4] << 16; | |
742 | error_address |= p[5] << 8; | |
743 | error_address |= p[6]; | |
744 | numbytes = error_address - memaddr; | |
745 | ||
746 | len -= numbytes; | |
747 | ||
748 | errno = EIO; | |
749 | ||
750 | break; | |
751 | } | |
752 | else if (error_code != 0) | |
753 | ocd_error ("ocd_read_bytes:", error_code); | |
754 | ||
755 | memcpy (myaddr, &p[4], numbytes); | |
756 | ||
757 | len -= numbytes; | |
758 | memaddr += numbytes; | |
759 | myaddr += numbytes; | |
760 | } | |
761 | ||
762 | return origlen - len; | |
763 | } | |
764 | \f | |
765 | /* Read or write LEN bytes from inferior memory at MEMADDR, transferring | |
766 | to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is | |
767 | nonzero. Returns length of data written or read; 0 for error. */ | |
768 | ||
769 | /* ARGSUSED */ | |
770 | int | |
771 | ocd_xfer_memory (memaddr, myaddr, len, should_write, target) | |
772 | CORE_ADDR memaddr; | |
773 | char *myaddr; | |
774 | int len; | |
775 | int should_write; | |
c5aa993b | 776 | struct target_ops *target; /* ignored */ |
c906108c SS |
777 | { |
778 | return dcache_xfer_memory (ocd_dcache, memaddr, myaddr, len, should_write); | |
779 | } | |
780 | \f | |
781 | void | |
fba45db2 | 782 | ocd_files_info (struct target_ops *ignore) |
c906108c SS |
783 | { |
784 | puts_filtered ("Debugging a target over a serial line.\n"); | |
785 | } | |
786 | \f | |
787 | /* Stuff for dealing with the packets which are part of this protocol. | |
788 | See comment at top of file for details. */ | |
789 | ||
790 | /* Read a single character from the remote side, handling wierd errors. */ | |
791 | ||
792 | static int | |
fba45db2 | 793 | readchar (int timeout) |
c906108c SS |
794 | { |
795 | int ch; | |
796 | ||
797 | ch = SERIAL_READCHAR (ocd_desc, timeout); | |
798 | ||
799 | switch (ch) | |
800 | { | |
801 | case SERIAL_EOF: | |
802 | error ("Remote connection closed"); | |
803 | case SERIAL_ERROR: | |
804 | perror_with_name ("Remote communication error"); | |
805 | case SERIAL_TIMEOUT: | |
806 | default: | |
807 | return ch; | |
808 | } | |
809 | } | |
810 | ||
811 | #if 0 | |
812 | /* Read a character from the data stream, dequoting as necessary. SYN is | |
813 | treated special. Any SYNs appearing in the data stream are returned as the | |
814 | distinct value RAW_SYN (which has a value > 8 bits and therefore cannot be | |
815 | mistaken for real data). */ | |
816 | ||
817 | static int | |
fba45db2 | 818 | get_quoted_char (int timeout) |
c906108c SS |
819 | { |
820 | int ch; | |
821 | ||
822 | ch = readchar (timeout); | |
823 | ||
824 | switch (ch) | |
825 | { | |
826 | case SERIAL_TIMEOUT: | |
827 | error ("Timeout in mid-packet, aborting"); | |
828 | case SYN: | |
829 | return RAW_SYN; | |
830 | case DLE: | |
831 | ch = readchar (timeout); | |
832 | if (ch == SYN) | |
833 | return RAW_SYN; | |
834 | return ch & ~0100; | |
835 | default: | |
836 | return ch; | |
837 | } | |
838 | } | |
839 | ||
c5aa993b | 840 | static unsigned char pkt[256 * 2 + 10], *pktp; /* Worst case */ |
c906108c SS |
841 | |
842 | static void | |
fba45db2 | 843 | reset_packet (void) |
c906108c SS |
844 | { |
845 | pktp = pkt; | |
846 | } | |
847 | ||
848 | static void | |
fba45db2 | 849 | output_packet (void) |
c906108c SS |
850 | { |
851 | if (SERIAL_WRITE (ocd_desc, pkt, pktp - pkt)) | |
852 | perror_with_name ("output_packet: write failed"); | |
853 | ||
854 | reset_packet (); | |
855 | } | |
856 | ||
857 | /* Output a quoted character. SYNs and DLEs are quoted. Everything else goes | |
858 | through untouched. */ | |
859 | ||
860 | static void | |
fba45db2 | 861 | put_quoted_char (int c) |
c906108c SS |
862 | { |
863 | switch (c) | |
864 | { | |
865 | case SYN: | |
866 | case DLE: | |
867 | *pktp++ = DLE; | |
868 | c |= 0100; | |
869 | } | |
870 | ||
871 | *pktp++ = c; | |
872 | } | |
873 | ||
874 | /* Send a packet to the OCD device. The packet framed by a SYN character, | |
875 | a byte count and a checksum. The byte count only counts the number of | |
876 | bytes between the count and the checksum. A count of zero actually | |
877 | means 256. Any SYNs within the packet (including the checksum and | |
878 | count) must be quoted. The quote character must be quoted as well. | |
879 | Quoting is done by replacing the character with the two-character sequence | |
880 | DLE, {char} | 0100. Note that the quoting mechanism has no effect on the | |
881 | byte count. */ | |
882 | ||
883 | static void | |
fba45db2 | 884 | stu_put_packet (unsigned char *buf, int len) |
c906108c SS |
885 | { |
886 | unsigned char checksum; | |
887 | unsigned char c; | |
888 | ||
889 | if (len == 0 || len > 256) | |
890 | abort (); /* Can't represent 0 length packet */ | |
891 | ||
892 | reset_packet (); | |
893 | ||
894 | checksum = 0; | |
895 | ||
896 | put_quoted_char (RAW_SYN); | |
897 | ||
898 | c = len; | |
899 | ||
900 | do | |
901 | { | |
902 | checksum += c; | |
903 | ||
904 | put_quoted_char (c); | |
905 | ||
906 | c = *buf++; | |
907 | } | |
908 | while (len-- > 0); | |
909 | ||
910 | put_quoted_char (-checksum & 0xff); | |
911 | ||
912 | output_packet (); | |
913 | } | |
914 | ||
915 | #else | |
916 | ||
917 | /* Send a packet to the OCD device. The packet framed by a SYN character, | |
918 | a byte count and a checksum. The byte count only counts the number of | |
919 | bytes between the count and the checksum. A count of zero actually | |
920 | means 256. Any SYNs within the packet (including the checksum and | |
921 | count) must be quoted. The quote character must be quoted as well. | |
922 | Quoting is done by replacing the character with the two-character sequence | |
923 | DLE, {char} | 0100. Note that the quoting mechanism has no effect on the | |
924 | byte count. */ | |
925 | ||
926 | static void | |
fba45db2 | 927 | ocd_put_packet (unsigned char *buf, int len) |
c906108c SS |
928 | { |
929 | unsigned char checksum; | |
930 | unsigned char c; | |
931 | unsigned char *packet, *packet_ptr; | |
932 | ||
c5aa993b | 933 | packet = alloca (len + 1 + 1); /* packet + SYN + checksum */ |
c906108c SS |
934 | packet_ptr = packet; |
935 | ||
936 | checksum = 0; | |
937 | ||
938 | *packet_ptr++ = 0x55; | |
939 | ||
940 | while (len-- > 0) | |
941 | { | |
942 | c = *buf++; | |
943 | ||
944 | checksum += c; | |
945 | *packet_ptr++ = c; | |
946 | } | |
947 | ||
948 | *packet_ptr++ = -checksum; | |
949 | if (SERIAL_WRITE (ocd_desc, packet, packet_ptr - packet)) | |
950 | perror_with_name ("output_packet: write failed"); | |
951 | } | |
952 | #endif | |
953 | ||
954 | #if 0 | |
955 | /* Get a packet from the OCD device. Timeout is only enforced for the | |
956 | first byte of the packet. Subsequent bytes are expected to arrive in | |
957 | time <= remote_timeout. Returns a pointer to a static buffer containing | |
958 | the payload of the packet. *LENP contains the length of the packet. | |
c5aa993b | 959 | */ |
c906108c SS |
960 | |
961 | static unsigned char * | |
fba45db2 | 962 | stu_get_packet (unsigned char cmd, int *lenp, int timeout) |
c906108c SS |
963 | { |
964 | int ch; | |
965 | int len; | |
966 | static unsigned char buf[256 + 10], *p; | |
967 | unsigned char checksum; | |
968 | ||
c5aa993b | 969 | find_packet: |
c906108c SS |
970 | |
971 | ch = get_quoted_char (timeout); | |
972 | ||
973 | if (ch < 0) | |
974 | error ("get_packet (readchar): %d", ch); | |
975 | ||
976 | if (ch != RAW_SYN) | |
977 | goto find_packet; | |
978 | ||
c5aa993b | 979 | found_syn: /* Found the start of a packet */ |
c906108c SS |
980 | |
981 | p = buf; | |
982 | checksum = 0; | |
983 | ||
984 | len = get_quoted_char (remote_timeout); | |
985 | ||
986 | if (len == RAW_SYN) | |
987 | goto found_syn; | |
988 | ||
989 | checksum += len; | |
990 | ||
991 | if (len == 0) | |
992 | len = 256; | |
993 | ||
994 | len++; /* Include checksum */ | |
995 | ||
996 | while (len-- > 0) | |
997 | { | |
998 | ch = get_quoted_char (remote_timeout); | |
999 | if (ch == RAW_SYN) | |
1000 | goto found_syn; | |
1001 | ||
1002 | *p++ = ch; | |
1003 | checksum += ch; | |
1004 | } | |
1005 | ||
1006 | if (checksum != 0) | |
1007 | goto find_packet; | |
1008 | ||
1009 | if (cmd != buf[0]) | |
1010 | error ("Response phase error. Got 0x%x, expected 0x%x", buf[0], cmd); | |
1011 | ||
1012 | *lenp = p - buf - 1; | |
1013 | return buf; | |
1014 | } | |
1015 | ||
1016 | #else | |
1017 | ||
1018 | /* Get a packet from the OCD device. Timeout is only enforced for the | |
1019 | first byte of the packet. Subsequent bytes are expected to arrive in | |
1020 | time <= remote_timeout. Returns a pointer to a static buffer containing | |
1021 | the payload of the packet. *LENP contains the length of the packet. | |
c5aa993b | 1022 | */ |
c906108c SS |
1023 | |
1024 | static unsigned char * | |
fba45db2 | 1025 | ocd_get_packet (int cmd, int *lenp, int timeout) |
c906108c SS |
1026 | { |
1027 | int ch; | |
1028 | int len; | |
c906108c SS |
1029 | static unsigned char packet[512]; |
1030 | unsigned char *packet_ptr; | |
1031 | unsigned char checksum; | |
1032 | ||
1033 | ch = readchar (timeout); | |
1034 | ||
1035 | if (ch < 0) | |
1036 | error ("ocd_get_packet (readchar): %d", ch); | |
1037 | ||
1038 | if (ch != 0x55) | |
1039 | error ("ocd_get_packet (readchar): %d", ch); | |
1040 | ||
1041 | /* Found the start of a packet */ | |
1042 | ||
1043 | packet_ptr = packet; | |
1044 | checksum = 0; | |
1045 | ||
1046 | /* Read command char. That sort of tells us how long the packet is. */ | |
1047 | ||
1048 | ch = readchar (timeout); | |
1049 | ||
1050 | if (ch < 0) | |
1051 | error ("ocd_get_packet (readchar): %d", ch); | |
1052 | ||
1053 | *packet_ptr++ = ch; | |
1054 | checksum += ch; | |
1055 | ||
1056 | /* Get status. */ | |
1057 | ||
1058 | ch = readchar (timeout); | |
1059 | ||
1060 | if (ch < 0) | |
1061 | error ("ocd_get_packet (readchar): %d", ch); | |
1062 | *packet_ptr++ = ch; | |
1063 | checksum += ch; | |
1064 | ||
1065 | /* Get error code. */ | |
1066 | ||
1067 | ch = readchar (timeout); | |
1068 | ||
1069 | if (ch < 0) | |
1070 | error ("ocd_get_packet (readchar): %d", ch); | |
1071 | *packet_ptr++ = ch; | |
1072 | checksum += ch; | |
1073 | ||
1074 | switch (ch) /* Figure out length of packet */ | |
1075 | { | |
1076 | case 0x7: /* Write verify error? */ | |
1077 | len = 8; /* write address, value read back */ | |
1078 | break; | |
1079 | case 0x11: /* Bus error? */ | |
c5aa993b | 1080 | /* write address, read flag */ |
c906108c SS |
1081 | case 0x15: /* Internal error */ |
1082 | len = 5; /* error code, vector */ | |
1083 | break; | |
1084 | default: /* Error w/no params */ | |
1085 | len = 0; | |
1086 | break; | |
1087 | case 0x0: /* Normal result */ | |
1088 | switch (packet[0]) | |
1089 | { | |
c5aa993b JM |
1090 | case OCD_AYT: /* Are You There? */ |
1091 | case OCD_SET_BAUD_RATE: /* Set Baud Rate */ | |
1092 | case OCD_INIT: /* Initialize OCD device */ | |
c906108c | 1093 | case OCD_SET_SPEED: /* Set Speed */ |
c5aa993b JM |
1094 | case OCD_SET_FUNC_CODE: /* Set Function Code */ |
1095 | case OCD_SET_CTL_FLAGS: /* Set Control Flags */ | |
1096 | case OCD_SET_BUF_ADDR: /* Set Register Buffer Address */ | |
1097 | case OCD_RUN: /* Run Target from PC */ | |
c906108c | 1098 | case OCD_RUN_ADDR: /* Run Target from Specified Address */ |
c5aa993b | 1099 | case OCD_STOP: /* Stop Target */ |
c906108c SS |
1100 | case OCD_RESET_RUN: /* Reset Target and Run */ |
1101 | case OCD_RESET: /* Reset Target and Halt */ | |
c5aa993b JM |
1102 | case OCD_STEP: /* Single Step */ |
1103 | case OCD_WRITE_REGS: /* Write Register */ | |
c906108c SS |
1104 | case OCD_WRITE_MEM: /* Write Memory */ |
1105 | case OCD_FILL_MEM: /* Fill Memory */ | |
1106 | case OCD_MOVE_MEM: /* Move Memory */ | |
c5aa993b JM |
1107 | case OCD_WRITE_INT_MEM: /* Write Internal Memory */ |
1108 | case OCD_JUMP: /* Jump to Subroutine */ | |
1109 | case OCD_ERASE_FLASH: /* Erase flash memory */ | |
1110 | case OCD_PROGRAM_FLASH: /* Write flash memory */ | |
c906108c SS |
1111 | case OCD_EXIT_MON: /* Exit the flash programming monitor */ |
1112 | case OCD_ENTER_MON: /* Enter the flash programming monitor */ | |
1113 | case OCD_LOG_FILE: /* Make Wigglers.dll save Wigglers.log */ | |
c5aa993b | 1114 | case OCD_SET_CONNECTION: /* Set type of connection in Wigglers.dll */ |
c906108c SS |
1115 | len = 0; |
1116 | break; | |
c5aa993b | 1117 | case OCD_GET_VERSION: /* Get Version */ |
c906108c SS |
1118 | len = 10; |
1119 | break; | |
c5aa993b | 1120 | case OCD_GET_STATUS_MASK: /* Get Status Mask */ |
c906108c SS |
1121 | len = 1; |
1122 | break; | |
1123 | case OCD_GET_CTRS: /* Get Error Counters */ | |
1124 | case OCD_READ_REGS: /* Read Register */ | |
1125 | case OCD_READ_MEM: /* Read Memory */ | |
c5aa993b | 1126 | case OCD_READ_INT_MEM: /* Read Internal Memory */ |
c906108c SS |
1127 | len = 257; |
1128 | break; | |
1129 | default: | |
1130 | error ("ocd_get_packet: unknown packet type 0x%x\n", ch); | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | if (len == 257) /* Byte stream? */ | |
1135 | { /* Yes, byte streams contain the length */ | |
1136 | ch = readchar (timeout); | |
1137 | ||
1138 | if (ch < 0) | |
1139 | error ("ocd_get_packet (readchar): %d", ch); | |
1140 | *packet_ptr++ = ch; | |
1141 | checksum += ch; | |
1142 | len = ch; | |
1143 | if (len == 0) | |
1144 | len = 256; | |
1145 | } | |
1146 | ||
1147 | while (len-- >= 0) /* Do rest of packet and checksum */ | |
1148 | { | |
1149 | ch = readchar (timeout); | |
1150 | ||
1151 | if (ch < 0) | |
1152 | error ("ocd_get_packet (readchar): %d", ch); | |
1153 | *packet_ptr++ = ch; | |
1154 | checksum += ch; | |
1155 | } | |
1156 | ||
1157 | if (checksum != 0) | |
1158 | error ("ocd_get_packet: bad packet checksum"); | |
1159 | ||
1160 | if (cmd != -1 && cmd != packet[0]) | |
1161 | error ("Response phase error. Got 0x%x, expected 0x%x", packet[0], cmd); | |
1162 | ||
c5aa993b | 1163 | *lenp = packet_ptr - packet - 1; /* Subtract checksum byte */ |
c906108c SS |
1164 | return packet; |
1165 | } | |
1166 | #endif | |
1167 | ||
1168 | /* Execute a simple (one-byte) command. Returns a pointer to the data | |
1169 | following the error code. */ | |
1170 | ||
1171 | static unsigned char * | |
fba45db2 | 1172 | ocd_do_command (int cmd, int *statusp, int *lenp) |
c906108c SS |
1173 | { |
1174 | unsigned char buf[100], *p; | |
1175 | int status, error_code; | |
1176 | char errbuf[100]; | |
1177 | ||
1178 | unsigned char logbuf[100]; | |
1179 | int logpktlen; | |
1180 | ||
1181 | buf[0] = cmd; | |
c5aa993b | 1182 | ocd_put_packet (buf, 1); /* Send command */ |
c906108c SS |
1183 | p = ocd_get_packet (*buf, lenp, remote_timeout); |
1184 | ||
1185 | if (*lenp < 3) | |
1186 | error ("Truncated response packet from OCD device"); | |
1187 | ||
1188 | status = p[1]; | |
1189 | error_code = p[2]; | |
1190 | ||
1191 | if (error_code != 0) | |
1192 | { | |
1193 | sprintf (errbuf, "ocd_do_command (0x%x):", cmd); | |
1194 | ocd_error (errbuf, error_code); | |
1195 | } | |
1196 | ||
1197 | if (status & OCD_FLAG_PWF) | |
1198 | error ("OCD device can't detect VCC at BDM interface."); | |
1199 | else if (status & OCD_FLAG_CABLE_DISC) | |
1200 | error ("BDM cable appears to be disconnected."); | |
1201 | ||
1202 | *statusp = status; | |
1203 | ||
1204 | logbuf[0] = OCD_LOG_FILE; | |
c5aa993b | 1205 | logbuf[1] = 3; /* close existing WIGGLERS.LOG */ |
c906108c SS |
1206 | ocd_put_packet (logbuf, 2); |
1207 | ocd_get_packet (logbuf[0], &logpktlen, remote_timeout); | |
1208 | ||
1209 | logbuf[0] = OCD_LOG_FILE; | |
c5aa993b | 1210 | logbuf[1] = 2; /* append to existing WIGGLERS.LOG */ |
c906108c SS |
1211 | ocd_put_packet (logbuf, 2); |
1212 | ocd_get_packet (logbuf[0], &logpktlen, remote_timeout); | |
1213 | ||
1214 | return p + 3; | |
1215 | } | |
1216 | \f | |
1217 | void | |
fba45db2 | 1218 | ocd_kill (void) |
c906108c SS |
1219 | { |
1220 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
1221 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
1222 | if (kill_kludge) | |
1223 | { | |
1224 | kill_kludge = 0; | |
1225 | target_mourn_inferior (); | |
1226 | return; | |
1227 | } | |
1228 | ||
1229 | /* Don't wait for it to die. I'm not really sure it matters whether | |
1230 | we do or not. */ | |
1231 | target_mourn_inferior (); | |
1232 | } | |
1233 | ||
1234 | void | |
fba45db2 | 1235 | ocd_mourn (void) |
c906108c SS |
1236 | { |
1237 | unpush_target (current_ops); | |
1238 | generic_mourn_inferior (); | |
1239 | } | |
1240 | ||
1241 | /* All we actually do is set the PC to the start address of exec_bfd, and start | |
1242 | the program at that point. */ | |
1243 | ||
1244 | void | |
fba45db2 | 1245 | ocd_create_inferior (char *exec_file, char *args, char **env) |
c906108c SS |
1246 | { |
1247 | if (args && (*args != '\000')) | |
1248 | error ("Args are not supported by BDM."); | |
1249 | ||
1250 | clear_proceed_status (); | |
1251 | proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0); | |
1252 | } | |
1253 | ||
1254 | void | |
fba45db2 | 1255 | ocd_load (char *args, int from_tty) |
c906108c SS |
1256 | { |
1257 | generic_load (args, from_tty); | |
1258 | ||
1259 | inferior_pid = 0; | |
1260 | ||
1261 | /* This is necessary because many things were based on the PC at the time that | |
1262 | we attached to the monitor, which is no longer valid now that we have loaded | |
1263 | new code (and just changed the PC). Another way to do this might be to call | |
1264 | normal_stop, except that the stack may not be valid, and things would get | |
1265 | horribly confused... */ | |
1266 | ||
1267 | clear_symtab_users (); | |
1268 | } | |
1269 | ||
1270 | /* This should be defined for each target */ | |
1271 | /* But we want to be able to compile this file for some configurations | |
1272 | not yet supported fully */ | |
c5aa993b JM |
1273 | |
1274 | #define BDM_BREAKPOINT {0x0,0x0,0x0,0x0} /* For ppc 8xx */ | |
c906108c | 1275 | #if 0 |
c5aa993b | 1276 | #define BDM_BREAKPOINT {0x4a,0xfa} /* BGND insn used for CPU32 */ |
c906108c SS |
1277 | #endif |
1278 | ||
1279 | /* BDM (at least on CPU32) uses a different breakpoint */ | |
1280 | ||
1281 | int | |
fba45db2 | 1282 | ocd_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
1283 | { |
1284 | static char break_insn[] = BDM_BREAKPOINT; | |
1285 | int val; | |
1286 | ||
1287 | val = target_read_memory (addr, contents_cache, sizeof (break_insn)); | |
1288 | ||
1289 | if (val == 0) | |
1290 | val = target_write_memory (addr, break_insn, sizeof (break_insn)); | |
1291 | ||
1292 | return val; | |
1293 | } | |
1294 | ||
1295 | int | |
fba45db2 | 1296 | ocd_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
c906108c SS |
1297 | { |
1298 | static char break_insn[] = BDM_BREAKPOINT; | |
1299 | int val; | |
1300 | ||
1301 | val = target_write_memory (addr, contents_cache, sizeof (break_insn)); | |
1302 | ||
1303 | return val; | |
1304 | } | |
1305 | ||
1306 | static void | |
fba45db2 | 1307 | bdm_command (char *args, int from_tty) |
c906108c SS |
1308 | { |
1309 | error ("bdm command must be followed by `reset'"); | |
1310 | } | |
1311 | ||
1312 | static void | |
fba45db2 | 1313 | bdm_reset_command (char *args, int from_tty) |
c906108c SS |
1314 | { |
1315 | int status, pktlen; | |
1316 | ||
1317 | if (!ocd_desc) | |
1318 | error ("Not connected to OCD device."); | |
1319 | ||
1320 | ocd_do_command (OCD_RESET, &status, &pktlen); | |
e99586d5 | 1321 | dcache_invd (ocd_dcache); |
c906108c SS |
1322 | registers_changed (); |
1323 | } | |
1324 | ||
1325 | static void | |
fba45db2 | 1326 | bdm_restart_command (char *args, int from_tty) |
c906108c SS |
1327 | { |
1328 | int status, pktlen; | |
1329 | ||
1330 | if (!ocd_desc) | |
1331 | error ("Not connected to OCD device."); | |
1332 | ||
1333 | ocd_do_command (OCD_RESET_RUN, &status, &pktlen); | |
1334 | last_run_status = status; | |
1335 | clear_proceed_status (); | |
1336 | wait_for_inferior (); | |
1337 | normal_stop (); | |
1338 | } | |
1339 | ||
1340 | /* Temporary replacement for target_store_registers(). This prevents | |
1341 | generic_load from trying to set the PC. */ | |
1342 | ||
1343 | static void | |
fba45db2 | 1344 | noop_store_registers (int regno) |
c906108c SS |
1345 | { |
1346 | } | |
1347 | ||
1348 | static void | |
fba45db2 | 1349 | bdm_update_flash_command (char *args, int from_tty) |
c906108c SS |
1350 | { |
1351 | int status, pktlen; | |
d4f3574e | 1352 | struct cleanup *old_chain; |
507f3c78 | 1353 | void (*store_registers_tmp) (int); |
c906108c SS |
1354 | |
1355 | if (!ocd_desc) | |
1356 | error ("Not connected to OCD device."); | |
1357 | ||
1358 | if (!args) | |
1359 | error ("Must specify file containing new OCD code."); | |
1360 | ||
c5aa993b | 1361 | /* old_chain = make_cleanup (flash_cleanup, 0); */ |
c906108c SS |
1362 | |
1363 | ocd_do_command (OCD_ENTER_MON, &status, &pktlen); | |
1364 | ||
1365 | ocd_do_command (OCD_ERASE_FLASH, &status, &pktlen); | |
1366 | ||
1367 | write_mem_command = OCD_PROGRAM_FLASH; | |
1368 | store_registers_tmp = current_target.to_store_registers; | |
1369 | current_target.to_store_registers = noop_store_registers; | |
1370 | ||
1371 | generic_load (args, from_tty); | |
1372 | ||
1373 | current_target.to_store_registers = store_registers_tmp; | |
1374 | write_mem_command = OCD_WRITE_MEM; | |
1375 | ||
1376 | ocd_do_command (OCD_EXIT_MON, &status, &pktlen); | |
1377 | ||
c5aa993b | 1378 | /* discard_cleanups (old_chain); */ |
c906108c SS |
1379 | } |
1380 | ||
1381 | static void | |
fba45db2 | 1382 | bdm_read_register_command (char *args, int from_tty) |
c906108c SS |
1383 | { |
1384 | /* XXX repeat should go on to the next register */ | |
1385 | ||
1386 | if (!ocd_desc) | |
1387 | error ("Not connected to OCD device."); | |
1388 | ||
1389 | if (!args) | |
1390 | error ("Must specify BDM register number."); | |
1391 | ||
1392 | } | |
1393 | \f | |
1394 | void | |
fba45db2 | 1395 | _initialize_remote_ocd (void) |
c906108c SS |
1396 | { |
1397 | extern struct cmd_list_element *cmdlist; | |
1398 | static struct cmd_list_element *ocd_cmd_list = NULL; | |
1399 | ||
1400 | add_show_from_set (add_set_cmd ("remotetimeout", no_class, | |
c5aa993b JM |
1401 | var_integer, (char *) &remote_timeout, |
1402 | "Set timeout value for remote read.\n", &setlist), | |
c906108c SS |
1403 | &showlist); |
1404 | ||
1405 | add_prefix_cmd ("ocd", class_obscure, bdm_command, "", &ocd_cmd_list, "ocd ", | |
1406 | 0, &cmdlist); | |
1407 | ||
1408 | add_cmd ("reset", class_obscure, bdm_reset_command, "", &ocd_cmd_list); | |
1409 | add_cmd ("restart", class_obscure, bdm_restart_command, "", &ocd_cmd_list); | |
1410 | add_cmd ("update-flash", class_obscure, bdm_update_flash_command, "", &ocd_cmd_list); | |
c5aa993b | 1411 | /* add_cmd ("read-register", class_obscure, bdm_read_register_command, "", &ocd_cmd_list); */ |
c906108c | 1412 | } |