Commit | Line | Data |
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c906108c | 1 | /* Remote debugging for the ARM RDP interface. |
29e57380 | 2 | Copyright 1994, 1995, 2001 Free Software Foundation, Inc. |
c906108c SS |
3 | |
4 | This file is part of GDB. | |
5 | ||
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. | |
10 | ||
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. | |
15 | ||
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 | |
c5aa993b JM |
18 | Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. | |
c906108c SS |
20 | |
21 | ||
22 | */ | |
23 | ||
24 | ||
25 | /* | |
26 | Much of this file (in particular the SWI stuff) is based on code by | |
27 | David Taylor (djt1000@uk.ac.cam.hermes). | |
28 | ||
29 | I hacked on and simplified it by removing a lot of sexy features he | |
30 | had added, and some of the (unix specific) workarounds he'd done | |
31 | for other GDB problems - which if they still exist should be fixed | |
32 | in GDB, not in a remote-foo thing . I also made it conform more to | |
33 | the doc I have; which may be wrong. | |
34 | ||
35 | Steve Chamberlain (sac@cygnus.com). | |
36 | */ | |
37 | ||
38 | ||
39 | #include "defs.h" | |
40 | #include "inferior.h" | |
c906108c SS |
41 | #include "value.h" |
42 | #include "callback.h" | |
43 | #include "command.h" | |
c906108c SS |
44 | #include <ctype.h> |
45 | #include <fcntl.h> | |
46 | #include "symfile.h" | |
47 | #include "remote-utils.h" | |
48 | #include "gdb_string.h" | |
c906108c SS |
49 | #include "gdbcore.h" |
50 | ||
104c1213 JM |
51 | #ifdef HAVE_TIME_H |
52 | #include <time.h> | |
53 | #endif | |
c906108c SS |
54 | |
55 | extern struct target_ops remote_rdp_ops; | |
56 | static serial_t io; | |
57 | static host_callback *callback = &default_callback; | |
58 | ||
59 | struct | |
60 | { | |
61 | int step_info; | |
62 | int break_info; | |
63 | int model_info; | |
64 | int target_info; | |
65 | int can_step; | |
66 | char command_line[10]; | |
67 | int rdi_level; | |
68 | int rdi_stopped_status; | |
69 | } | |
70 | ds; | |
71 | ||
72 | ||
73 | ||
74 | /* Definitions for the RDP protocol. */ | |
75 | ||
76 | #define RDP_MOUTHFULL (1<<6) | |
77 | #define FPU_COPRO_NUMBER 1 | |
78 | ||
79 | #define RDP_OPEN 0 | |
80 | #define RDP_OPEN_TYPE_COLD 0 | |
81 | #define RDP_OPEN_TYPE_WARM 1 | |
82 | #define RDP_OPEN_TYPE_BAUDRATE 2 | |
83 | ||
84 | #define RDP_OPEN_BAUDRATE_9600 1 | |
85 | #define RDP_OPEN_BAUDRATE_19200 2 | |
86 | #define RDP_OPEN_BAUDRATE_38400 3 | |
87 | ||
88 | #define RDP_OPEN_TYPE_RETURN_SEX (1<<3) | |
89 | ||
90 | #define RDP_CLOSE 1 | |
91 | ||
92 | #define RDP_MEM_READ 2 | |
93 | ||
94 | #define RDP_MEM_WRITE 3 | |
95 | ||
96 | #define RDP_CPU_READ 4 | |
97 | #define RDP_CPU_WRITE 5 | |
98 | #define RDP_CPU_READWRITE_MODE_CURRENT 255 | |
99 | #define RDP_CPU_READWRITE_MASK_PC (1<<16) | |
100 | #define RDP_CPU_READWRITE_MASK_CPSR (1<<17) | |
101 | #define RDP_CPU_READWRITE_MASK_SPSR (1<<18) | |
102 | ||
103 | #define RDP_COPRO_READ 6 | |
104 | #define RDP_COPRO_WRITE 7 | |
105 | #define RDP_FPU_READWRITE_MASK_FPS (1<<8) | |
106 | ||
107 | #define RDP_SET_BREAK 0xa | |
108 | #define RDP_SET_BREAK_TYPE_PC_EQUAL 0 | |
109 | #define RDP_SET_BREAK_TYPE_GET_HANDLE (0x10) | |
110 | ||
111 | #define RDP_CLEAR_BREAK 0xb | |
112 | ||
113 | #define RDP_EXEC 0x10 | |
114 | #define RDP_EXEC_TYPE_SYNC 0 | |
115 | ||
116 | #define RDP_STEP 0x11 | |
117 | ||
118 | #define RDP_INFO 0x12 | |
119 | #define RDP_INFO_ABOUT_STEP 2 | |
120 | #define RDP_INFO_ABOUT_STEP_GT_1 1 | |
121 | #define RDP_INFO_ABOUT_STEP_TO_JMP 2 | |
122 | #define RDP_INFO_ABOUT_STEP_1 4 | |
123 | #define RDP_INFO_ABOUT_TARGET 0 | |
124 | #define RDP_INFO_ABOUT_BREAK 1 | |
125 | #define RDP_INFO_ABOUT_BREAK_COMP 1 | |
126 | #define RDP_INFO_ABOUT_BREAK_RANGE 2 | |
127 | #define RDP_INFO_ABOUT_BREAK_BYTE_READ 4 | |
128 | #define RDP_INFO_ABOUT_BREAK_HALFWORD_READ 8 | |
129 | #define RDP_INFO_ABOUT_BREAK_WORD_READ (1<<4) | |
130 | #define RDP_INFO_ABOUT_BREAK_BYTE_WRITE (1<<5) | |
131 | #define RDP_INFO_ABOUT_BREAK_HALFWORD_WRITE (1<<6) | |
132 | #define RDP_INFO_ABOUT_BREAK_WORD_WRITE (1<<7) | |
133 | #define RDP_INFO_ABOUT_BREAK_MASK (1<<8) | |
134 | #define RDP_INFO_ABOUT_BREAK_THREAD_BREAK (1<<9) | |
135 | #define RDP_INFO_ABOUT_BREAK_THREAD_WATCH (1<<10) | |
136 | #define RDP_INFO_ABOUT_BREAK_COND (1<<11) | |
137 | #define RDP_INFO_VECTOR_CATCH (0x180) | |
138 | #define RDP_INFO_ICEBREAKER (7) | |
139 | #define RDP_INFO_SET_CMDLINE (0x300) | |
140 | ||
141 | #define RDP_SELECT_CONFIG (0x16) | |
142 | #define RDI_ConfigCPU 0 | |
143 | #define RDI_ConfigSystem 1 | |
144 | #define RDI_MatchAny 0 | |
145 | #define RDI_MatchExactly 1 | |
146 | #define RDI_MatchNoEarlier 2 | |
147 | ||
148 | #define RDP_RESET 0x7f | |
149 | ||
150 | /* Returns from RDP */ | |
151 | #define RDP_RES_STOPPED 0x20 | |
152 | #define RDP_RES_SWI 0x21 | |
153 | #define RDP_RES_FATAL 0x5e | |
154 | #define RDP_RES_VALUE 0x5f | |
155 | #define RDP_RES_VALUE_LITTLE_ENDIAN 240 | |
156 | #define RDP_RES_VALUE_BIG_ENDIAN 241 | |
157 | #define RDP_RES_RESET 0x7f | |
158 | #define RDP_RES_AT_BREAKPOINT 143 | |
159 | #define RDP_RES_IDUNNO 0xe6 | |
160 | #define RDP_OSOpReply 0x13 | |
161 | #define RDP_OSOpWord 2 | |
162 | #define RDP_OSOpNothing 0 | |
163 | ||
164 | static int timeout = 2; | |
165 | ||
c5aa993b | 166 | static char *commandline = NULL; |
c906108c SS |
167 | |
168 | static int | |
29e57380 C |
169 | remote_rdp_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, |
170 | int write, | |
171 | struct mem_attrib *attrib, | |
172 | struct target_ops *target); | |
c906108c SS |
173 | |
174 | ||
175 | /* Stuff for talking to the serial layer. */ | |
176 | ||
177 | static unsigned char | |
fba45db2 | 178 | get_byte (void) |
c906108c SS |
179 | { |
180 | int c = SERIAL_READCHAR (io, timeout); | |
181 | ||
182 | if (remote_debug) | |
9846de1b | 183 | fprintf_unfiltered (gdb_stdlog, "[%02x]\n", c); |
c906108c SS |
184 | |
185 | if (c == SERIAL_TIMEOUT) | |
186 | { | |
187 | if (timeout == 0) | |
188 | return (unsigned char) c; | |
189 | ||
190 | error ("Timeout reading from remote_system"); | |
191 | } | |
192 | ||
193 | return c; | |
194 | } | |
195 | ||
196 | /* Note that the target always speaks little-endian to us, | |
197 | even if it's a big endian machine. */ | |
198 | static unsigned int | |
fba45db2 | 199 | get_word (void) |
c906108c SS |
200 | { |
201 | unsigned int val = 0; | |
202 | unsigned int c; | |
203 | int n; | |
204 | for (n = 0; n < 4; n++) | |
205 | { | |
206 | c = get_byte (); | |
207 | val |= c << (n * 8); | |
208 | } | |
209 | return val; | |
210 | } | |
211 | ||
212 | static void | |
fba45db2 | 213 | put_byte (char val) |
c906108c SS |
214 | { |
215 | if (remote_debug) | |
9846de1b | 216 | fprintf_unfiltered (gdb_stdlog, "(%02x)\n", val); |
c906108c SS |
217 | SERIAL_WRITE (io, &val, 1); |
218 | } | |
219 | ||
220 | static void | |
fba45db2 | 221 | put_word (int val) |
c906108c SS |
222 | { |
223 | /* We always send in little endian */ | |
224 | unsigned char b[4]; | |
225 | b[0] = val; | |
226 | b[1] = val >> 8; | |
227 | b[2] = val >> 16; | |
228 | b[3] = val >> 24; | |
229 | ||
230 | if (remote_debug) | |
9846de1b | 231 | fprintf_unfiltered (gdb_stdlog, "(%04x)", val); |
c906108c SS |
232 | |
233 | SERIAL_WRITE (io, b, 4); | |
234 | } | |
235 | ||
236 | ||
237 | ||
238 | /* Stuff for talking to the RDP layer. */ | |
239 | ||
240 | /* This is a bit more fancy that need be so that it syncs even in nasty cases. | |
241 | ||
242 | I'be been unable to make it reliably sync up with the change | |
243 | baudrate open command. It likes to sit and say it's been reset, | |
244 | with no more action. So I took all that code out. I'd rather sync | |
245 | reliably at 9600 than wait forever for a possible 19200 connection. | |
246 | ||
247 | */ | |
248 | static void | |
fba45db2 | 249 | rdp_init (int cold, int tty) |
c906108c SS |
250 | { |
251 | int sync = 0; | |
252 | int type = cold ? RDP_OPEN_TYPE_COLD : RDP_OPEN_TYPE_WARM; | |
253 | int baudtry = 9600; | |
254 | ||
255 | time_t now = time (0); | |
256 | time_t stop_time = now + 10; /* Try and sync for 10 seconds, then give up */ | |
257 | ||
258 | ||
259 | while (time (0) < stop_time && !sync) | |
260 | { | |
261 | int restype; | |
262 | QUIT; | |
263 | ||
264 | SERIAL_FLUSH_INPUT (io); | |
265 | SERIAL_FLUSH_OUTPUT (io); | |
266 | ||
267 | if (tty) | |
268 | printf_unfiltered ("Trying to connect at %d baud.\n", baudtry); | |
269 | ||
270 | /* | |
c5aa993b JM |
271 | ** It seems necessary to reset an EmbeddedICE to get it going. |
272 | ** This has the side benefit of displaying the startup banner. | |
273 | */ | |
c906108c SS |
274 | if (cold) |
275 | { | |
276 | put_byte (RDP_RESET); | |
277 | while ((restype = SERIAL_READCHAR (io, 1)) > 0) | |
278 | { | |
279 | switch (restype) | |
280 | { | |
281 | case SERIAL_TIMEOUT: | |
282 | break; | |
283 | case RDP_RESET: | |
284 | /* Sent at start of reset process: ignore */ | |
285 | break; | |
286 | default: | |
287 | printf_unfiltered ("%c", isgraph (restype) ? restype : ' '); | |
288 | break; | |
289 | } | |
290 | } | |
291 | ||
292 | if (restype == 0) | |
293 | { | |
294 | /* Got end-of-banner mark */ | |
295 | printf_filtered ("\n"); | |
296 | } | |
297 | } | |
298 | ||
299 | put_byte (RDP_OPEN); | |
300 | ||
c5aa993b | 301 | put_byte (type | RDP_OPEN_TYPE_RETURN_SEX); |
c906108c SS |
302 | put_word (0); |
303 | ||
304 | while (!sync && (restype = SERIAL_READCHAR (io, 1)) > 0) | |
305 | { | |
306 | if (remote_debug) | |
9846de1b | 307 | fprintf_unfiltered (gdb_stdlog, "[%02x]\n", restype); |
c906108c SS |
308 | |
309 | switch (restype) | |
310 | { | |
311 | case SERIAL_TIMEOUT: | |
312 | break; | |
313 | ||
314 | case RDP_RESET: | |
315 | while ((restype = SERIAL_READCHAR (io, 1)) == RDP_RESET) | |
316 | ; | |
317 | do | |
318 | { | |
319 | printf_unfiltered ("%c", isgraph (restype) ? restype : ' '); | |
320 | } | |
321 | while ((restype = SERIAL_READCHAR (io, 1)) > 0); | |
322 | ||
323 | if (tty) | |
324 | { | |
325 | printf_unfiltered ("\nThe board has sent notification that it was reset.\n"); | |
326 | printf_unfiltered ("Waiting for it to settle down...\n"); | |
327 | } | |
328 | sleep (3); | |
329 | if (tty) | |
330 | printf_unfiltered ("\nTrying again.\n"); | |
331 | cold = 0; | |
332 | break; | |
333 | ||
334 | default: | |
335 | break; | |
336 | ||
337 | case RDP_RES_VALUE: | |
338 | { | |
339 | int resval = SERIAL_READCHAR (io, 1); | |
340 | ||
341 | if (remote_debug) | |
9846de1b | 342 | fprintf_unfiltered (gdb_stdlog, "[%02x]\n", resval); |
c906108c SS |
343 | |
344 | switch (resval) | |
345 | { | |
346 | case SERIAL_TIMEOUT: | |
347 | break; | |
348 | case RDP_RES_VALUE_LITTLE_ENDIAN: | |
349 | target_byte_order = LITTLE_ENDIAN; | |
350 | sync = 1; | |
351 | break; | |
352 | case RDP_RES_VALUE_BIG_ENDIAN: | |
353 | target_byte_order = BIG_ENDIAN; | |
354 | sync = 1; | |
355 | break; | |
356 | default: | |
357 | break; | |
358 | } | |
359 | } | |
360 | } | |
361 | } | |
362 | } | |
363 | ||
364 | if (!sync) | |
365 | { | |
366 | error ("Couldn't reset the board, try pressing the reset button"); | |
367 | } | |
368 | } | |
369 | ||
370 | ||
c906108c SS |
371 | void |
372 | send_rdp (char *template,...) | |
c906108c SS |
373 | { |
374 | char buf[200]; | |
375 | char *dst = buf; | |
376 | va_list alist; | |
c906108c | 377 | va_start (alist, template); |
c906108c SS |
378 | |
379 | while (*template) | |
380 | { | |
381 | unsigned int val; | |
382 | int *pi; | |
383 | int *pstat; | |
384 | char *pc; | |
385 | int i; | |
386 | switch (*template++) | |
387 | { | |
388 | case 'b': | |
389 | val = va_arg (alist, int); | |
390 | *dst++ = val; | |
391 | break; | |
392 | case 'w': | |
393 | val = va_arg (alist, int); | |
394 | *dst++ = val; | |
395 | *dst++ = val >> 8; | |
396 | *dst++ = val >> 16; | |
397 | *dst++ = val >> 24; | |
398 | break; | |
399 | case 'S': | |
400 | val = get_byte (); | |
401 | if (val != RDP_RES_VALUE) | |
402 | { | |
403 | printf_unfiltered ("got bad res value of %d, %x\n", val, val); | |
404 | } | |
405 | break; | |
406 | case 'V': | |
407 | pstat = va_arg (alist, int *); | |
408 | pi = va_arg (alist, int *); | |
409 | ||
410 | *pstat = get_byte (); | |
411 | /* Check the result was zero, if not read the syndrome */ | |
412 | if (*pstat) | |
413 | { | |
414 | *pi = get_word (); | |
415 | } | |
416 | break; | |
417 | case 'Z': | |
418 | /* Check the result code */ | |
419 | switch (get_byte ()) | |
420 | { | |
421 | case 0: | |
422 | /* Success */ | |
423 | break; | |
424 | case 253: | |
425 | /* Target can't do it; never mind */ | |
426 | printf_unfiltered ("RDP: Insufficient privilege\n"); | |
427 | return; | |
428 | case 254: | |
429 | /* Target can't do it; never mind */ | |
430 | printf_unfiltered ("RDP: Unimplemented message\n"); | |
431 | return; | |
432 | case 255: | |
433 | error ("Command garbled"); | |
434 | break; | |
435 | default: | |
436 | error ("Corrupt reply from target"); | |
437 | break; | |
438 | } | |
439 | break; | |
440 | case 'W': | |
441 | /* Read a word from the target */ | |
442 | pi = va_arg (alist, int *); | |
443 | *pi = get_word (); | |
444 | break; | |
445 | case 'P': | |
446 | /* Read in some bytes from the target. */ | |
447 | pc = va_arg (alist, char *); | |
448 | val = va_arg (alist, int); | |
449 | for (i = 0; i < val; i++) | |
450 | { | |
451 | pc[i] = get_byte (); | |
452 | } | |
453 | break; | |
454 | case 'p': | |
455 | /* send what's being pointed at */ | |
456 | pc = va_arg (alist, char *); | |
457 | val = va_arg (alist, int); | |
458 | dst = buf; | |
459 | SERIAL_WRITE (io, pc, val); | |
460 | break; | |
461 | case '-': | |
462 | /* Send whats in the queue */ | |
463 | if (dst != buf) | |
464 | { | |
465 | SERIAL_WRITE (io, buf, dst - buf); | |
466 | dst = buf; | |
467 | } | |
468 | break; | |
469 | case 'B': | |
470 | pi = va_arg (alist, int *); | |
471 | *pi = get_byte (); | |
472 | break; | |
473 | default: | |
e1e9e218 | 474 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
475 | } |
476 | } | |
11cf8741 | 477 | va_end (alist); |
c906108c SS |
478 | |
479 | if (dst != buf) | |
e1e9e218 | 480 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
481 | } |
482 | ||
483 | ||
484 | static int | |
fba45db2 | 485 | rdp_write (CORE_ADDR memaddr, char *buf, int len) |
c906108c SS |
486 | { |
487 | int res; | |
488 | int val; | |
489 | ||
490 | send_rdp ("bww-p-SV", RDP_MEM_WRITE, memaddr, len, buf, len, &res, &val); | |
491 | ||
492 | if (res) | |
493 | { | |
494 | return val; | |
495 | } | |
496 | return len; | |
497 | } | |
498 | ||
499 | ||
500 | static int | |
fba45db2 | 501 | rdp_read (CORE_ADDR memaddr, char *buf, int len) |
c906108c SS |
502 | { |
503 | int res; | |
504 | int val; | |
505 | send_rdp ("bww-S-P-V", | |
506 | RDP_MEM_READ, memaddr, len, | |
507 | buf, len, | |
508 | &res, &val); | |
509 | if (res) | |
510 | { | |
511 | return val; | |
512 | } | |
513 | return len; | |
514 | } | |
515 | ||
516 | static void | |
fba45db2 | 517 | rdp_fetch_one_register (int mask, char *buf) |
c906108c SS |
518 | { |
519 | int val; | |
520 | send_rdp ("bbw-SWZ", RDP_CPU_READ, RDP_CPU_READWRITE_MODE_CURRENT, mask, &val); | |
521 | store_signed_integer (buf, 4, val); | |
522 | } | |
523 | ||
524 | static void | |
fba45db2 | 525 | rdp_fetch_one_fpu_register (int mask, char *buf) |
c906108c SS |
526 | { |
527 | #if 0 | |
528 | /* !!! Since the PIE board doesn't work as documented, | |
529 | and it doesn't have FPU hardware anyway and since it | |
530 | slows everything down, I've disabled this. */ | |
531 | int val; | |
532 | if (mask == RDP_FPU_READWRITE_MASK_FPS) | |
533 | { | |
534 | /* this guy is only a word */ | |
535 | send_rdp ("bbw-SWZ", RDP_COPRO_READ, FPU_COPRO_NUMBER, mask, &val); | |
536 | store_signed_integer (buf, 4, val); | |
537 | } | |
538 | else | |
539 | { | |
540 | /* There are 12 bytes long | |
541 | !! fixme about endianness | |
542 | */ | |
543 | int dummy; /* I've seen these come back as four words !! */ | |
544 | send_rdp ("bbw-SWWWWZ", RDP_COPRO_READ, FPU_COPRO_NUMBER, mask, buf + 0, buf + 4, buf + 8, &dummy); | |
545 | } | |
546 | #endif | |
547 | memset (buf, 0, MAX_REGISTER_RAW_SIZE); | |
548 | } | |
549 | ||
550 | ||
551 | static void | |
fba45db2 | 552 | rdp_store_one_register (int mask, char *buf) |
c906108c SS |
553 | { |
554 | int val = extract_unsigned_integer (buf, 4); | |
555 | ||
556 | send_rdp ("bbww-SZ", | |
557 | RDP_CPU_WRITE, RDP_CPU_READWRITE_MODE_CURRENT, mask, val); | |
558 | } | |
559 | ||
560 | ||
561 | static void | |
fba45db2 | 562 | rdp_store_one_fpu_register (int mask, char *buf) |
c906108c SS |
563 | { |
564 | #if 0 | |
565 | /* See comment in fetch_one_fpu_register */ | |
566 | if (mask == RDP_FPU_READWRITE_MASK_FPS) | |
567 | { | |
568 | int val = extract_unsigned_integer (buf, 4); | |
569 | /* this guy is only a word */ | |
570 | send_rdp ("bbww-SZ", RDP_COPRO_WRITE, | |
571 | FPU_COPRO_NUMBER, | |
572 | mask, val); | |
573 | } | |
574 | else | |
575 | { | |
576 | /* There are 12 bytes long | |
577 | !! fixme about endianness | |
578 | */ | |
579 | int dummy = 0; | |
580 | /* I've seen these come as four words, not the three advertized !! */ | |
581 | printf ("Sending mask %x\n", mask); | |
582 | send_rdp ("bbwwwww-SZ", | |
583 | RDP_COPRO_WRITE, | |
584 | FPU_COPRO_NUMBER, | |
585 | mask, | |
586 | *(int *) (buf + 0), | |
587 | *(int *) (buf + 4), | |
588 | *(int *) (buf + 8), | |
589 | 0); | |
590 | ||
591 | printf ("done mask %x\n", mask); | |
592 | } | |
593 | #endif | |
594 | } | |
595 | \f | |
596 | ||
597 | /* Convert between GDB requests and the RDP layer. */ | |
598 | ||
599 | static void | |
fba45db2 | 600 | remote_rdp_fetch_register (int regno) |
c906108c SS |
601 | { |
602 | if (regno == -1) | |
603 | { | |
604 | for (regno = 0; regno < NUM_REGS; regno++) | |
605 | remote_rdp_fetch_register (regno); | |
606 | } | |
607 | else | |
608 | { | |
609 | char buf[MAX_REGISTER_RAW_SIZE]; | |
610 | if (regno < 15) | |
611 | rdp_fetch_one_register (1 << regno, buf); | |
612 | else if (regno == PC_REGNUM) | |
613 | rdp_fetch_one_register (RDP_CPU_READWRITE_MASK_PC, buf); | |
614 | else if (regno == PS_REGNUM) | |
615 | rdp_fetch_one_register (RDP_CPU_READWRITE_MASK_CPSR, buf); | |
616 | else if (regno == FPS_REGNUM) | |
617 | rdp_fetch_one_fpu_register (RDP_FPU_READWRITE_MASK_FPS, buf); | |
618 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
619 | rdp_fetch_one_fpu_register (1 << (regno - F0_REGNUM), buf); | |
620 | else | |
621 | { | |
622 | printf ("Help me with fetch reg %d\n", regno); | |
623 | } | |
624 | supply_register (regno, buf); | |
625 | } | |
626 | } | |
627 | ||
628 | ||
629 | static void | |
fba45db2 | 630 | remote_rdp_store_register (int regno) |
c906108c SS |
631 | { |
632 | if (regno == -1) | |
633 | { | |
634 | for (regno = 0; regno < NUM_REGS; regno++) | |
635 | remote_rdp_store_register (regno); | |
636 | } | |
637 | else | |
638 | { | |
639 | char tmp[MAX_REGISTER_RAW_SIZE]; | |
640 | read_register_gen (regno, tmp); | |
641 | if (regno < 15) | |
642 | rdp_store_one_register (1 << regno, tmp); | |
643 | else if (regno == PC_REGNUM) | |
644 | rdp_store_one_register (RDP_CPU_READWRITE_MASK_PC, tmp); | |
645 | else if (regno == PS_REGNUM) | |
646 | rdp_store_one_register (RDP_CPU_READWRITE_MASK_CPSR, tmp); | |
647 | else if (regno >= F0_REGNUM && regno <= F7_REGNUM) | |
648 | rdp_store_one_fpu_register (1 << (regno - F0_REGNUM), tmp); | |
649 | else | |
650 | { | |
651 | printf ("Help me with reg %d\n", regno); | |
652 | } | |
653 | } | |
654 | } | |
655 | ||
656 | static void | |
fba45db2 | 657 | remote_rdp_kill (void) |
c906108c SS |
658 | { |
659 | callback->shutdown (callback); | |
660 | } | |
661 | ||
662 | ||
663 | static void | |
fba45db2 | 664 | rdp_info (void) |
c906108c SS |
665 | { |
666 | send_rdp ("bw-S-W-Z", RDP_INFO, RDP_INFO_ABOUT_STEP, | |
667 | &ds.step_info); | |
668 | send_rdp ("bw-S-W-Z", RDP_INFO, RDP_INFO_ABOUT_BREAK, | |
669 | &ds.break_info); | |
670 | send_rdp ("bw-S-WW-Z", RDP_INFO, RDP_INFO_ABOUT_TARGET, | |
671 | &ds.target_info, | |
672 | &ds.model_info); | |
673 | ||
674 | ds.can_step = ds.step_info & RDP_INFO_ABOUT_STEP_1; | |
675 | ||
676 | ds.rdi_level = (ds.target_info >> 5) & 3; | |
677 | } | |
678 | ||
679 | ||
680 | static void | |
fba45db2 | 681 | rdp_execute_start (void) |
c906108c SS |
682 | { |
683 | /* Start it off, but don't wait for it */ | |
684 | send_rdp ("bb-", RDP_EXEC, RDP_EXEC_TYPE_SYNC); | |
685 | } | |
686 | ||
687 | ||
688 | static void | |
fba45db2 | 689 | rdp_set_command_line (char *command, char *args) |
c906108c SS |
690 | { |
691 | /* | |
c5aa993b JM |
692 | ** We could use RDP_INFO_SET_CMDLINE to send this, but EmbeddedICE systems |
693 | ** don't implement that, and get all confused at the unexpected text. | |
694 | ** Instead, just keep a copy, and send it when the target does a SWI_GetEnv | |
695 | */ | |
c906108c SS |
696 | |
697 | if (commandline != NULL) | |
b8c9b27d | 698 | xfree (commandline); |
c906108c SS |
699 | |
700 | commandline = malloc (strlen (command) + strlen (args) + 2); | |
701 | if (commandline != NULL) | |
702 | { | |
703 | strcpy (commandline, command); | |
704 | strcat (commandline, " "); | |
705 | strcat (commandline, args); | |
706 | } | |
707 | } | |
708 | ||
709 | static void | |
fba45db2 | 710 | rdp_catch_vectors (void) |
c906108c SS |
711 | { |
712 | /* | |
c5aa993b JM |
713 | ** We want the target monitor to intercept the abort vectors |
714 | ** i.e. stop the program if any of these are used. | |
715 | */ | |
c906108c | 716 | send_rdp ("bww-SZ", RDP_INFO, RDP_INFO_VECTOR_CATCH, |
c5aa993b JM |
717 | /* |
718 | ** Specify a bitmask including | |
719 | ** the reset vector | |
720 | ** the undefined instruction vector | |
721 | ** the prefetch abort vector | |
722 | ** the data abort vector | |
723 | ** the address exception vector | |
724 | */ | |
725 | (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | |
726 | ); | |
c906108c | 727 | } |
c5aa993b | 728 | |
c906108c SS |
729 | |
730 | ||
731 | #define a_byte 1 | |
732 | #define a_word 2 | |
733 | #define a_string 3 | |
734 | ||
735 | ||
736 | typedef struct | |
737 | { | |
738 | CORE_ADDR n; | |
739 | const char *s; | |
740 | } | |
741 | argsin; | |
742 | ||
743 | #define ABYTE 1 | |
744 | #define AWORD 2 | |
745 | #define ASTRING 3 | |
746 | #define ADDRLEN 4 | |
747 | ||
748 | #define SWI_WriteC 0x0 | |
749 | #define SWI_Write0 0x2 | |
750 | #define SWI_ReadC 0x4 | |
751 | #define SWI_CLI 0x5 | |
752 | #define SWI_GetEnv 0x10 | |
753 | #define SWI_Exit 0x11 | |
754 | #define SWI_EnterOS 0x16 | |
755 | ||
756 | #define SWI_GetErrno 0x60 | |
757 | #define SWI_Clock 0x61 | |
758 | ||
759 | #define SWI_Time 0x63 | |
760 | #define SWI_Remove 0x64 | |
761 | #define SWI_Rename 0x65 | |
762 | #define SWI_Open 0x66 | |
763 | ||
764 | #define SWI_Close 0x68 | |
765 | #define SWI_Write 0x69 | |
766 | #define SWI_Read 0x6a | |
767 | #define SWI_Seek 0x6b | |
768 | #define SWI_Flen 0x6c | |
769 | ||
770 | #define SWI_IsTTY 0x6e | |
771 | #define SWI_TmpNam 0x6f | |
772 | #define SWI_InstallHandler 0x70 | |
773 | #define SWI_GenerateError 0x71 | |
774 | ||
775 | ||
776 | #ifndef O_BINARY | |
777 | #define O_BINARY 0 | |
778 | #endif | |
779 | ||
780 | static int translate_open_mode[] = | |
781 | { | |
c5aa993b JM |
782 | O_RDONLY, /* "r" */ |
783 | O_RDONLY + O_BINARY, /* "rb" */ | |
784 | O_RDWR, /* "r+" */ | |
785 | O_RDWR + O_BINARY, /* "r+b" */ | |
786 | O_WRONLY + O_CREAT + O_TRUNC, /* "w" */ | |
787 | O_WRONLY + O_BINARY + O_CREAT + O_TRUNC, /* "wb" */ | |
788 | O_RDWR + O_CREAT + O_TRUNC, /* "w+" */ | |
789 | O_RDWR + O_BINARY + O_CREAT + O_TRUNC, /* "w+b" */ | |
790 | O_WRONLY + O_APPEND + O_CREAT, /* "a" */ | |
791 | O_WRONLY + O_BINARY + O_APPEND + O_CREAT, /* "ab" */ | |
792 | O_RDWR + O_APPEND + O_CREAT, /* "a+" */ | |
793 | O_RDWR + O_BINARY + O_APPEND + O_CREAT /* "a+b" */ | |
c906108c SS |
794 | }; |
795 | ||
796 | static int | |
fba45db2 | 797 | exec_swi (int swi, argsin *args) |
c906108c SS |
798 | { |
799 | int i; | |
800 | char c; | |
801 | switch (swi) | |
802 | { | |
803 | case SWI_WriteC: | |
804 | callback->write_stdout (callback, &c, 1); | |
805 | return 0; | |
806 | case SWI_Write0: | |
807 | for (i = 0; i < args->n; i++) | |
808 | callback->write_stdout (callback, args->s, strlen (args->s)); | |
809 | return 0; | |
810 | case SWI_ReadC: | |
811 | callback->read_stdin (callback, &c, 1); | |
812 | args->n = c; | |
813 | return 1; | |
814 | case SWI_CLI: | |
815 | args->n = callback->system (callback, args->s); | |
816 | return 1; | |
817 | case SWI_GetErrno: | |
818 | args->n = callback->get_errno (callback); | |
819 | return 1; | |
820 | case SWI_Time: | |
821 | args->n = callback->time (callback, NULL); | |
822 | return 1; | |
823 | ||
c5aa993b JM |
824 | case SWI_Clock: |
825 | /* return number of centi-seconds... */ | |
826 | args->n = | |
c906108c | 827 | #ifdef CLOCKS_PER_SEC |
c5aa993b JM |
828 | (CLOCKS_PER_SEC >= 100) |
829 | ? (clock () / (CLOCKS_PER_SEC / 100)) | |
830 | : ((clock () * 100) / CLOCKS_PER_SEC); | |
c906108c | 831 | #else |
c5aa993b JM |
832 | /* presume unix... clock() returns microseconds */ |
833 | clock () / 10000; | |
c906108c | 834 | #endif |
c5aa993b | 835 | return 1; |
c906108c SS |
836 | |
837 | case SWI_Remove: | |
838 | args->n = callback->unlink (callback, args->s); | |
839 | return 1; | |
840 | case SWI_Rename: | |
841 | args->n = callback->rename (callback, args[0].s, args[1].s); | |
842 | return 1; | |
843 | ||
844 | case SWI_Open: | |
c5aa993b JM |
845 | /* Now we need to decode the Demon open mode */ |
846 | i = translate_open_mode[args[1].n]; | |
847 | ||
848 | /* Filename ":tt" is special: it denotes stdin/out */ | |
849 | if (strcmp (args->s, ":tt") == 0) | |
850 | { | |
851 | if (i == O_RDONLY) /* opening tty "r" */ | |
852 | args->n = 0 /* stdin */ ; | |
853 | else | |
854 | args->n = 1 /* stdout */ ; | |
855 | } | |
856 | else | |
857 | args->n = callback->open (callback, args->s, i); | |
c906108c SS |
858 | return 1; |
859 | ||
860 | case SWI_Close: | |
861 | args->n = callback->close (callback, args->n); | |
862 | return 1; | |
863 | ||
864 | case SWI_Write: | |
865 | /* Return the number of bytes *not* written */ | |
866 | args->n = args[1].n - | |
867 | callback->write (callback, args[0].n, args[1].s, args[1].n); | |
868 | return 1; | |
869 | ||
870 | case SWI_Read: | |
871 | { | |
872 | char *copy = alloca (args[2].n); | |
873 | int done = callback->read (callback, args[0].n, copy, args[2].n); | |
874 | if (done > 0) | |
29e57380 | 875 | remote_rdp_xfer_inferior_memory (args[1].n, copy, done, 1, 0, 0); |
c5aa993b | 876 | args->n = args[2].n - done; |
c906108c SS |
877 | return 1; |
878 | } | |
879 | ||
880 | case SWI_Seek: | |
881 | /* Return non-zero on failure */ | |
882 | args->n = callback->lseek (callback, args[0].n, args[1].n, 0) < 0; | |
883 | return 1; | |
884 | ||
885 | case SWI_Flen: | |
886 | { | |
887 | long old = callback->lseek (callback, args->n, 0, SEEK_CUR); | |
888 | args->n = callback->lseek (callback, args->n, 0, SEEK_END); | |
889 | callback->lseek (callback, args->n, old, 0); | |
890 | return 1; | |
891 | } | |
892 | ||
893 | case SWI_IsTTY: | |
894 | args->n = callback->isatty (callback, args->n); | |
895 | return 1; | |
896 | ||
897 | case SWI_GetEnv: | |
898 | if (commandline != NULL) | |
899 | { | |
900 | int len = strlen (commandline); | |
901 | if (len > 255) | |
902 | { | |
903 | len = 255; | |
c5aa993b | 904 | commandline[255] = '\0'; |
c906108c SS |
905 | } |
906 | remote_rdp_xfer_inferior_memory (args[0].n, | |
29e57380 | 907 | commandline, len + 1, 1, 0, 0); |
c906108c SS |
908 | } |
909 | else | |
29e57380 | 910 | remote_rdp_xfer_inferior_memory (args[0].n, "", 1, 1, 0, 0); |
c906108c | 911 | return 1; |
c5aa993b | 912 | |
c906108c SS |
913 | default: |
914 | return 0; | |
915 | } | |
916 | } | |
917 | ||
918 | ||
919 | static void | |
fba45db2 | 920 | handle_swi (void) |
c906108c SS |
921 | { |
922 | argsin args[3]; | |
923 | char *buf; | |
924 | int len; | |
925 | int count = 0; | |
926 | ||
927 | int swino = get_word (); | |
928 | int type = get_byte (); | |
929 | while (type != 0) | |
930 | { | |
931 | switch (type & 0x3) | |
932 | { | |
933 | case ABYTE: | |
934 | args[count].n = get_byte (); | |
935 | break; | |
936 | ||
937 | case AWORD: | |
938 | args[count].n = get_word (); | |
939 | break; | |
940 | ||
941 | case ASTRING: | |
942 | /* If the word is under 32 bytes it will be sent otherwise | |
943 | an address to it is passed. Also: Special case of 255 */ | |
944 | ||
945 | len = get_byte (); | |
946 | if (len > 32) | |
947 | { | |
948 | if (len == 255) | |
949 | { | |
950 | len = get_word (); | |
951 | } | |
952 | buf = alloca (len); | |
953 | remote_rdp_xfer_inferior_memory (get_word (), | |
954 | buf, | |
955 | len, | |
956 | 0, | |
29e57380 | 957 | 0, |
c906108c SS |
958 | 0); |
959 | } | |
960 | else | |
961 | { | |
962 | int i; | |
963 | buf = alloca (len + 1); | |
964 | for (i = 0; i < len; i++) | |
965 | buf[i] = get_byte (); | |
966 | buf[i] = 0; | |
967 | } | |
968 | args[count].n = len; | |
969 | args[count].s = buf; | |
970 | break; | |
971 | ||
972 | default: | |
8e1a459b | 973 | error ("Unimplemented SWI argument"); |
c906108c SS |
974 | } |
975 | ||
976 | type = type >> 2; | |
977 | count++; | |
978 | } | |
979 | ||
980 | if (exec_swi (swino, args)) | |
981 | { | |
982 | /* We have two options here reply with either a byte or a word | |
983 | which is stored in args[0].n. There is no harm in replying with | |
984 | a word all the time, so thats what I do! */ | |
985 | send_rdp ("bbw-", RDP_OSOpReply, RDP_OSOpWord, args[0].n); | |
986 | } | |
987 | else | |
988 | { | |
989 | send_rdp ("bb-", RDP_OSOpReply, RDP_OSOpNothing); | |
990 | } | |
991 | } | |
992 | ||
993 | static void | |
fba45db2 | 994 | rdp_execute_finish (void) |
c906108c SS |
995 | { |
996 | int running = 1; | |
997 | ||
998 | while (running) | |
999 | { | |
1000 | int res; | |
1001 | res = SERIAL_READCHAR (io, 1); | |
1002 | while (res == SERIAL_TIMEOUT) | |
1003 | { | |
1004 | QUIT; | |
1005 | printf_filtered ("Waiting for target..\n"); | |
1006 | res = SERIAL_READCHAR (io, 1); | |
1007 | } | |
1008 | ||
1009 | switch (res) | |
1010 | { | |
1011 | case RDP_RES_SWI: | |
1012 | handle_swi (); | |
1013 | break; | |
1014 | case RDP_RES_VALUE: | |
1015 | send_rdp ("B", &ds.rdi_stopped_status); | |
1016 | running = 0; | |
1017 | break; | |
1018 | case RDP_RESET: | |
1019 | printf_filtered ("Target reset\n"); | |
1020 | running = 0; | |
1021 | break; | |
1022 | default: | |
1023 | printf_filtered ("Ignoring %x\n", res); | |
1024 | break; | |
1025 | } | |
1026 | } | |
1027 | } | |
1028 | ||
1029 | ||
1030 | static void | |
fba45db2 | 1031 | rdp_execute (void) |
c906108c SS |
1032 | { |
1033 | rdp_execute_start (); | |
1034 | rdp_execute_finish (); | |
1035 | } | |
1036 | ||
1037 | static int | |
fba45db2 | 1038 | remote_rdp_insert_breakpoint (CORE_ADDR addr, char *save) |
c906108c SS |
1039 | { |
1040 | int res; | |
1041 | if (ds.rdi_level > 0) | |
1042 | { | |
1043 | send_rdp ("bwb-SWB", | |
1044 | RDP_SET_BREAK, | |
1045 | addr, | |
1046 | RDP_SET_BREAK_TYPE_PC_EQUAL | RDP_SET_BREAK_TYPE_GET_HANDLE, | |
1047 | save, | |
1048 | &res); | |
1049 | } | |
1050 | else | |
1051 | { | |
1052 | send_rdp ("bwb-SB", | |
1053 | RDP_SET_BREAK, | |
1054 | addr, | |
1055 | RDP_SET_BREAK_TYPE_PC_EQUAL, | |
1056 | &res); | |
1057 | } | |
1058 | return res; | |
1059 | } | |
1060 | ||
1061 | static int | |
fba45db2 | 1062 | remote_rdp_remove_breakpoint (CORE_ADDR addr, char *save) |
c906108c SS |
1063 | { |
1064 | int res; | |
1065 | if (ds.rdi_level > 0) | |
1066 | { | |
1067 | send_rdp ("b-p-S-B", | |
1068 | RDP_CLEAR_BREAK, | |
1069 | save, 4, | |
1070 | &res); | |
1071 | } | |
1072 | else | |
1073 | { | |
1074 | send_rdp ("bw-S-B", | |
1075 | RDP_CLEAR_BREAK, | |
1076 | addr, | |
1077 | &res); | |
1078 | } | |
1079 | return res; | |
1080 | } | |
1081 | ||
1082 | static void | |
fba45db2 | 1083 | rdp_step (void) |
c906108c SS |
1084 | { |
1085 | if (ds.can_step && 0) | |
1086 | { | |
1087 | /* The pie board can't do steps so I can't test this, and | |
1088 | the other code will always work. */ | |
1089 | int status; | |
1090 | send_rdp ("bbw-S-B", | |
1091 | RDP_STEP, 0, 1, | |
1092 | &status); | |
1093 | } | |
1094 | else | |
1095 | { | |
1096 | char handle[4]; | |
1097 | CORE_ADDR pc = read_register (PC_REGNUM); | |
1098 | pc = arm_get_next_pc (pc); | |
3bb04bdd | 1099 | remote_rdp_insert_breakpoint (pc, handle); |
c906108c | 1100 | rdp_execute (); |
3bb04bdd | 1101 | remote_rdp_remove_breakpoint (pc, handle); |
c906108c SS |
1102 | } |
1103 | } | |
1104 | ||
1105 | static void | |
fba45db2 | 1106 | remote_rdp_open (char *args, int from_tty) |
c906108c SS |
1107 | { |
1108 | int not_icebreaker; | |
1109 | ||
1110 | if (!args) | |
1111 | error_no_arg ("serial port device name"); | |
1112 | ||
1113 | baud_rate = 9600; | |
1114 | ||
1115 | target_preopen (from_tty); | |
1116 | ||
1117 | io = SERIAL_OPEN (args); | |
1118 | ||
1119 | if (!io) | |
1120 | perror_with_name (args); | |
1121 | ||
1122 | SERIAL_RAW (io); | |
1123 | ||
1124 | rdp_init (1, from_tty); | |
1125 | ||
1126 | ||
1127 | if (from_tty) | |
1128 | { | |
1129 | printf_unfiltered ("Remote RDP debugging using %s at %d baud\n", args, baud_rate); | |
1130 | } | |
1131 | ||
1132 | rdp_info (); | |
1133 | ||
1134 | /* Need to set up the vector interception state */ | |
c5aa993b | 1135 | rdp_catch_vectors (); |
c906108c SS |
1136 | |
1137 | /* | |
c5aa993b JM |
1138 | ** If it's an EmbeddedICE, we need to set the processor config. |
1139 | ** Assume we can always have ARM7TDI... | |
1140 | */ | |
1141 | send_rdp ("bw-SB", RDP_INFO, RDP_INFO_ICEBREAKER, ¬_icebreaker); | |
c906108c SS |
1142 | if (!not_icebreaker) |
1143 | { | |
c5aa993b | 1144 | const char *CPU = "ARM7TDI"; |
c906108c SS |
1145 | int ICEversion; |
1146 | int len = strlen (CPU); | |
c5aa993b | 1147 | |
c906108c SS |
1148 | send_rdp ("bbbbw-p-SWZ", |
1149 | RDP_SELECT_CONFIG, | |
1150 | RDI_ConfigCPU, /* Aspect: set the CPU */ | |
1151 | len, /* The number of bytes in the name */ | |
1152 | RDI_MatchAny, /* We'll take whatever we get */ | |
1153 | 0, /* We'll take whatever version's there */ | |
c5aa993b JM |
1154 | CPU, len, |
1155 | &ICEversion); | |
c906108c SS |
1156 | } |
1157 | ||
c5aa993b | 1158 | /* command line initialised on 'run' */ |
c906108c | 1159 | |
c5aa993b | 1160 | push_target (&remote_rdp_ops); |
c906108c SS |
1161 | |
1162 | callback->init (callback); | |
1163 | flush_cached_frames (); | |
1164 | registers_changed (); | |
1165 | stop_pc = read_pc (); | |
1166 | set_current_frame (create_new_frame (read_fp (), stop_pc)); | |
1167 | select_frame (get_current_frame (), 0); | |
1168 | print_stack_frame (selected_frame, -1, 1); | |
1169 | } | |
1170 | ||
1171 | ||
1172 | ||
1173 | /* Close out all files and local state before this target loses control. */ | |
1174 | ||
1175 | static void | |
fba45db2 | 1176 | remote_rdp_close (int quitting) |
c906108c SS |
1177 | { |
1178 | callback->shutdown (callback); | |
1179 | if (io) | |
1180 | SERIAL_CLOSE (io); | |
1181 | io = 0; | |
1182 | } | |
1183 | ||
1184 | ||
1185 | /* Resume execution of the target process. STEP says whether to single-step | |
1186 | or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given | |
1187 | to the target, or zero for no signal. */ | |
1188 | ||
1189 | static void | |
fba45db2 | 1190 | remote_rdp_resume (int pid, int step, enum target_signal siggnal) |
c906108c SS |
1191 | { |
1192 | if (step) | |
1193 | rdp_step (); | |
1194 | else | |
1195 | rdp_execute (); | |
1196 | } | |
1197 | ||
1198 | /* Wait for inferior process to do something. Return pid of child, | |
1199 | or -1 in case of error; store status through argument pointer STATUS, | |
1200 | just as `wait' would. */ | |
1201 | ||
1202 | static int | |
fba45db2 | 1203 | remote_rdp_wait (int pid, struct target_waitstatus *status) |
c906108c SS |
1204 | { |
1205 | switch (ds.rdi_stopped_status) | |
1206 | { | |
1207 | default: | |
1208 | case RDP_RES_RESET: | |
1209 | case RDP_RES_SWI: | |
1210 | status->kind = TARGET_WAITKIND_EXITED; | |
1211 | status->value.integer = read_register (0); | |
1212 | break; | |
1213 | case RDP_RES_AT_BREAKPOINT: | |
1214 | status->kind = TARGET_WAITKIND_STOPPED; | |
1215 | /* The signal in sigrc is a host signal. That probably | |
1216 | should be fixed. */ | |
1217 | status->value.sig = TARGET_SIGNAL_TRAP; | |
1218 | break; | |
1219 | #if 0 | |
1220 | case rdp_signalled: | |
1221 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
1222 | /* The signal in sigrc is a host signal. That probably | |
1223 | should be fixed. */ | |
1224 | status->value.sig = target_signal_from_host (sigrc); | |
1225 | break; | |
1226 | #endif | |
1227 | } | |
1228 | ||
1229 | return inferior_pid; | |
1230 | } | |
1231 | ||
1232 | /* Get ready to modify the registers array. On machines which store | |
1233 | individual registers, this doesn't need to do anything. On machines | |
1234 | which store all the registers in one fell swoop, this makes sure | |
1235 | that registers contains all the registers from the program being | |
1236 | debugged. */ | |
1237 | ||
1238 | static void | |
fba45db2 | 1239 | remote_rdp_prepare_to_store (void) |
c906108c SS |
1240 | { |
1241 | /* Do nothing, since we can store individual regs */ | |
1242 | } | |
1243 | ||
d93bce06 KB |
1244 | /* Transfer LEN bytes between GDB address MYADDR and target address |
1245 | MEMADDR. If WRITE is non-zero, transfer them to the target, | |
1246 | otherwise transfer them from the target. TARGET is unused. | |
1247 | ||
1248 | Returns the number of bytes transferred. */ | |
1249 | ||
c906108c | 1250 | static int |
d93bce06 | 1251 | remote_rdp_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, |
29e57380 C |
1252 | int write, |
1253 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
1254 | struct target_ops *target ATTRIBUTE_UNUSED) | |
c906108c SS |
1255 | { |
1256 | /* I infer from D Taylor's code that there's a limit on the amount | |
1257 | we can transfer in one chunk.. */ | |
1258 | int done = 0; | |
1259 | while (done < len) | |
1260 | { | |
1261 | int justdone; | |
1262 | int thisbite = len - done; | |
1263 | if (thisbite > RDP_MOUTHFULL) | |
1264 | thisbite = RDP_MOUTHFULL; | |
1265 | ||
1266 | QUIT; | |
1267 | ||
1268 | if (write) | |
1269 | { | |
1270 | justdone = rdp_write (memaddr + done, myaddr + done, thisbite); | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | justdone = rdp_read (memaddr + done, myaddr + done, thisbite); | |
1275 | } | |
1276 | ||
1277 | done += justdone; | |
1278 | ||
1279 | if (justdone != thisbite) | |
1280 | break; | |
1281 | } | |
1282 | return done; | |
1283 | } | |
1284 | ||
1285 | ||
1286 | ||
1287 | struct yn | |
1288 | { | |
1289 | const char *name; | |
1290 | int bit; | |
1291 | }; | |
1292 | static struct yn stepinfo[] = | |
1293 | { | |
1294 | {"Step more than one instruction", RDP_INFO_ABOUT_STEP_GT_1}, | |
1295 | {"Step to jump", RDP_INFO_ABOUT_STEP_TO_JMP}, | |
1296 | {"Step one instruction", RDP_INFO_ABOUT_STEP_1}, | |
1297 | {0} | |
1298 | }; | |
1299 | ||
1300 | static struct yn breakinfo[] = | |
1301 | { | |
1302 | {"comparison breakpoints supported", RDP_INFO_ABOUT_BREAK_COMP}, | |
1303 | {"range breakpoints supported", RDP_INFO_ABOUT_BREAK_RANGE}, | |
1304 | {"watchpoints for byte reads supported", RDP_INFO_ABOUT_BREAK_BYTE_READ}, | |
1305 | {"watchpoints for half-word reads supported", RDP_INFO_ABOUT_BREAK_HALFWORD_READ}, | |
1306 | {"watchpoints for word reads supported", RDP_INFO_ABOUT_BREAK_WORD_READ}, | |
1307 | {"watchpoints for byte writes supported", RDP_INFO_ABOUT_BREAK_BYTE_WRITE}, | |
1308 | {"watchpoints for half-word writes supported", RDP_INFO_ABOUT_BREAK_HALFWORD_WRITE}, | |
1309 | {"watchpoints for word writes supported", RDP_INFO_ABOUT_BREAK_WORD_WRITE}, | |
1310 | {"mask break/watch-points supported", RDP_INFO_ABOUT_BREAK_MASK}, | |
1311 | {"thread-specific breakpoints supported", RDP_INFO_ABOUT_BREAK_THREAD_BREAK}, | |
1312 | {"thread-specific watchpoints supported", RDP_INFO_ABOUT_BREAK_THREAD_WATCH}, | |
1313 | {"conditional breakpoints supported", RDP_INFO_ABOUT_BREAK_COND}, | |
1314 | {0} | |
1315 | }; | |
1316 | ||
1317 | ||
1318 | static void | |
fba45db2 | 1319 | dump_bits (struct yn *t, int info) |
c906108c SS |
1320 | { |
1321 | while (t->name) | |
1322 | { | |
1323 | printf_unfiltered (" %-45s : %s\n", t->name, (info & t->bit) ? "Yes" : "No"); | |
1324 | t++; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | static void | |
fba45db2 | 1329 | remote_rdp_files_info (struct target_ops *target) |
c906108c SS |
1330 | { |
1331 | printf_filtered ("Target capabilities:\n"); | |
1332 | dump_bits (stepinfo, ds.step_info); | |
1333 | dump_bits (breakinfo, ds.break_info); | |
1334 | printf_unfiltered ("target level RDI %x\n", (ds.target_info >> 5) & 3); | |
1335 | } | |
1336 | ||
1337 | ||
1338 | static void | |
fba45db2 | 1339 | remote_rdp_create_inferior (char *exec_file, char *allargs, char **env) |
c906108c SS |
1340 | { |
1341 | CORE_ADDR entry_point; | |
1342 | ||
1343 | if (exec_file == 0 || exec_bfd == 0) | |
c5aa993b | 1344 | error ("No executable file specified."); |
c906108c SS |
1345 | |
1346 | entry_point = (CORE_ADDR) bfd_get_start_address (exec_bfd); | |
1347 | ||
c5aa993b | 1348 | remote_rdp_kill (); |
c906108c SS |
1349 | remove_breakpoints (); |
1350 | init_wait_for_inferior (); | |
1351 | ||
1352 | /* This gives us a chance to set up the command line */ | |
1353 | rdp_set_command_line (exec_file, allargs); | |
1354 | ||
1355 | inferior_pid = 42; | |
c5aa993b | 1356 | insert_breakpoints (); /* Needed to get correct instruction in cache */ |
c906108c SS |
1357 | |
1358 | /* | |
c5aa993b JM |
1359 | ** RDP targets don't provide any facility to set the top of memory, |
1360 | ** so we don't bother to look for MEMSIZE in the environment. | |
1361 | */ | |
c906108c SS |
1362 | |
1363 | /* Let's go! */ | |
1364 | proceed (entry_point, TARGET_SIGNAL_DEFAULT, 0); | |
1365 | } | |
1366 | ||
1367 | /* Accept any stray run/attach commands */ | |
1368 | static int | |
fba45db2 | 1369 | remote_rdp_can_run (void) |
c906108c SS |
1370 | { |
1371 | return 1; | |
1372 | } | |
1373 | ||
1374 | /* Attach doesn't need to do anything */ | |
1375 | static void | |
fba45db2 | 1376 | remote_rdp_attach (char *args, int from_tty) |
c906108c SS |
1377 | { |
1378 | return; | |
1379 | } | |
c5aa993b | 1380 | |
c906108c SS |
1381 | /* Define the target subroutine names */ |
1382 | ||
c5aa993b | 1383 | struct target_ops remote_rdp_ops; |
c906108c | 1384 | |
c5aa993b JM |
1385 | static void |
1386 | init_remote_rdp_ops (void) | |
c906108c | 1387 | { |
c5aa993b JM |
1388 | remote_rdp_ops.to_shortname = "rdp"; |
1389 | remote_rdp_ops.to_longname = "Remote Target using the RDProtocol"; | |
1390 | remote_rdp_ops.to_doc = "Use a remote ARM system which uses the ARM Remote Debugging Protocol"; | |
1391 | remote_rdp_ops.to_open = remote_rdp_open; | |
1392 | remote_rdp_ops.to_close = remote_rdp_close; | |
1393 | remote_rdp_ops.to_attach = remote_rdp_attach; | |
c906108c SS |
1394 | remote_rdp_ops.to_post_attach = NULL; |
1395 | remote_rdp_ops.to_require_attach = NULL; | |
c5aa993b JM |
1396 | remote_rdp_ops.to_detach = NULL; |
1397 | remote_rdp_ops.to_require_detach = NULL; | |
1398 | remote_rdp_ops.to_resume = remote_rdp_resume; | |
1399 | remote_rdp_ops.to_wait = remote_rdp_wait; | |
1400 | remote_rdp_ops.to_post_wait = NULL; | |
1401 | remote_rdp_ops.to_fetch_registers = remote_rdp_fetch_register; | |
1402 | remote_rdp_ops.to_store_registers = remote_rdp_store_register; | |
1403 | remote_rdp_ops.to_prepare_to_store = remote_rdp_prepare_to_store; | |
1404 | remote_rdp_ops.to_xfer_memory = remote_rdp_xfer_inferior_memory; | |
1405 | remote_rdp_ops.to_files_info = remote_rdp_files_info; | |
1406 | remote_rdp_ops.to_insert_breakpoint = remote_rdp_insert_breakpoint; | |
1407 | remote_rdp_ops.to_remove_breakpoint = remote_rdp_remove_breakpoint; | |
1408 | remote_rdp_ops.to_terminal_init = NULL; | |
1409 | remote_rdp_ops.to_terminal_inferior = NULL; | |
1410 | remote_rdp_ops.to_terminal_ours_for_output = NULL; | |
1411 | remote_rdp_ops.to_terminal_ours = NULL; | |
1412 | remote_rdp_ops.to_terminal_info = NULL; | |
1413 | remote_rdp_ops.to_kill = remote_rdp_kill; | |
1414 | remote_rdp_ops.to_load = generic_load; | |
1415 | remote_rdp_ops.to_lookup_symbol = NULL; | |
1416 | remote_rdp_ops.to_create_inferior = remote_rdp_create_inferior; | |
c906108c SS |
1417 | remote_rdp_ops.to_post_startup_inferior = NULL; |
1418 | remote_rdp_ops.to_acknowledge_created_inferior = NULL; | |
1419 | remote_rdp_ops.to_clone_and_follow_inferior = NULL; | |
1420 | remote_rdp_ops.to_post_follow_inferior_by_clone = NULL; | |
1421 | remote_rdp_ops.to_insert_fork_catchpoint = NULL; | |
1422 | remote_rdp_ops.to_remove_fork_catchpoint = NULL; | |
1423 | remote_rdp_ops.to_insert_vfork_catchpoint = NULL; | |
1424 | remote_rdp_ops.to_remove_vfork_catchpoint = NULL; | |
1425 | remote_rdp_ops.to_has_forked = NULL; | |
1426 | remote_rdp_ops.to_has_vforked = NULL; | |
1427 | remote_rdp_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
1428 | remote_rdp_ops.to_post_follow_vfork = NULL; | |
1429 | remote_rdp_ops.to_insert_exec_catchpoint = NULL; | |
1430 | remote_rdp_ops.to_remove_exec_catchpoint = NULL; | |
1431 | remote_rdp_ops.to_has_execd = NULL; | |
1432 | remote_rdp_ops.to_reported_exec_events_per_exec_call = NULL; | |
1433 | remote_rdp_ops.to_has_exited = NULL; | |
c5aa993b JM |
1434 | remote_rdp_ops.to_mourn_inferior = generic_mourn_inferior; |
1435 | remote_rdp_ops.to_can_run = remote_rdp_can_run; | |
1436 | remote_rdp_ops.to_notice_signals = 0; | |
1437 | remote_rdp_ops.to_thread_alive = 0; | |
1438 | remote_rdp_ops.to_stop = 0; | |
c906108c | 1439 | remote_rdp_ops.to_pid_to_exec_file = NULL; |
c5aa993b JM |
1440 | remote_rdp_ops.to_core_file_to_sym_file = NULL; |
1441 | remote_rdp_ops.to_stratum = process_stratum; | |
1442 | remote_rdp_ops.DONT_USE = NULL; | |
1443 | remote_rdp_ops.to_has_all_memory = 1; | |
1444 | remote_rdp_ops.to_has_memory = 1; | |
1445 | remote_rdp_ops.to_has_stack = 1; | |
1446 | remote_rdp_ops.to_has_registers = 1; | |
1447 | remote_rdp_ops.to_has_execution = 1; | |
1448 | remote_rdp_ops.to_sections = NULL; | |
1449 | remote_rdp_ops.to_sections_end = NULL; | |
1450 | remote_rdp_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
1451 | } |
1452 | ||
1453 | void | |
fba45db2 | 1454 | _initialize_remote_rdp (void) |
c906108c | 1455 | { |
c5aa993b | 1456 | init_remote_rdp_ops (); |
c906108c SS |
1457 | add_target (&remote_rdp_ops); |
1458 | } |