Commit | Line | Data |
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3a9c3d12 | 1 | /* GDB interface to ARM RDI library. |
f1f8c637 | 2 | Copyright 1997, 1998 Free Software Foundation, Inc. |
3a9c3d12 NC |
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 | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
19 | ||
3a9c3d12 NC |
20 | #include "defs.h" |
21 | #include "gdb_string.h" | |
22 | #include <fcntl.h> | |
23 | #include "frame.h" | |
24 | #include "inferior.h" | |
25 | #include "bfd.h" | |
26 | #include "symfile.h" | |
27 | #include "target.h" | |
28 | #include "wait.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "objfiles.h" | |
31 | #include "gdb-stabs.h" | |
32 | #include "gdbthread.h" | |
33 | #include "gdbcore.h" | |
34 | ||
35 | #ifdef USG | |
36 | #include <sys/types.h> | |
37 | #endif | |
38 | ||
39 | #include <signal.h> | |
40 | ||
41 | #include "rdi-share/ardi.h" | |
42 | #include "rdi-share/adp.h" | |
43 | #include "rdi-share/hsys.h" | |
44 | ||
45 | /* Prototypes for local functions */ | |
46 | ||
47 | static void arm_rdi_files_info PARAMS ((struct target_ops *ignore)); | |
48 | ||
49 | static int arm_rdi_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, | |
50 | int len, int should_write, | |
51 | struct target_ops *target)); | |
52 | ||
53 | static void arm_rdi_prepare_to_store PARAMS ((void)); | |
54 | ||
55 | static void arm_rdi_fetch_registers PARAMS ((int regno)); | |
56 | ||
57 | static void arm_rdi_resume PARAMS ((int pid, int step, | |
58 | enum target_signal siggnal)); | |
59 | ||
60 | static int arm_rdi_start_remote PARAMS ((char *dummy)); | |
61 | ||
62 | static void arm_rdi_open PARAMS ((char *name, int from_tty)); | |
63 | ||
64 | static void arm_rdi_create_inferior PARAMS ((char *exec_file, char *args, | |
65 | char **env)); | |
66 | ||
67 | static void arm_rdi_close PARAMS ((int quitting)); | |
68 | ||
69 | static void arm_rdi_store_registers PARAMS ((int regno)); | |
70 | ||
71 | static void arm_rdi_mourn PARAMS ((void)); | |
72 | ||
73 | static void arm_rdi_send PARAMS ((char *buf)); | |
74 | ||
75 | static int arm_rdi_wait PARAMS ((int pid, struct target_waitstatus *status)); | |
76 | ||
77 | static void arm_rdi_kill PARAMS ((void)); | |
78 | ||
79 | static void arm_rdi_detach PARAMS ((char *args, int from_tty)); | |
80 | ||
81 | static void arm_rdi_interrupt PARAMS ((int signo)); | |
82 | ||
83 | static void arm_rdi_interrupt_twice PARAMS ((int signo)); | |
84 | ||
85 | static void interrupt_query PARAMS ((void)); | |
86 | ||
87 | static int arm_rdi_insert_breakpoint PARAMS ((CORE_ADDR, char *)); | |
88 | ||
89 | static int arm_rdi_remove_breakpoint PARAMS ((CORE_ADDR, char *)); | |
90 | ||
91 | static char *rdi_error_message PARAMS ((int err)); | |
92 | ||
93 | static enum target_signal rdi_error_signal PARAMS ((int err)); | |
94 | ||
f1f8c637 SS |
95 | /* Global variables. */ |
96 | ||
97 | struct target_ops arm_rdi_ops; | |
3a9c3d12 NC |
98 | |
99 | static struct Dbg_ConfigBlock gdb_config; | |
100 | ||
101 | static struct Dbg_HostosInterface gdb_hostif; | |
102 | ||
103 | static int max_load_size; | |
104 | ||
105 | static int execute_status; | |
106 | ||
107 | /* A little list of breakpoints that have been set. */ | |
108 | ||
109 | static struct local_bp_list_entry { | |
110 | CORE_ADDR addr; | |
111 | PointHandle point; | |
112 | struct local_bp_list_entry *next; | |
113 | } *local_bp_list; | |
114 | ||
115 | \f | |
116 | /* Stub for catch_errors. */ | |
117 | ||
118 | static int | |
119 | arm_rdi_start_remote (dummy) | |
120 | char *dummy; | |
121 | { | |
122 | return 1; | |
123 | } | |
124 | ||
125 | /* Helper callbacks for the "host interface" structure. RDI functions call | |
126 | these to forward output from the target system and so forth. */ | |
127 | ||
128 | void | |
f1f8c637 | 129 | voiddummy () |
3a9c3d12 NC |
130 | { |
131 | printf("void dummy\n"); | |
132 | } | |
133 | ||
134 | static void | |
135 | myprint (arg, format, ap) | |
136 | PTR arg; | |
137 | const char *format; | |
138 | va_list ap; | |
139 | { | |
140 | vfprintf (stdout, format, ap); | |
141 | } | |
142 | ||
143 | static void | |
144 | mywritec (arg, c) | |
145 | PTR arg; | |
146 | int c; | |
147 | { | |
148 | fputc (c, (FILE *) arg); | |
149 | } | |
150 | ||
151 | static int | |
152 | mywrite (arg, buffer, len) | |
153 | PTR arg; | |
154 | char const *buffer; | |
155 | int len; | |
156 | { | |
157 | return fwrite (buffer, 1, len, stdout); | |
158 | } | |
159 | ||
160 | static void | |
161 | mypause (arg) | |
162 | PTR arg; | |
163 | { | |
164 | } | |
165 | ||
166 | /* These last two are tricky as we have to handle the special case of | |
167 | being interrupted more carefully */ | |
168 | ||
169 | static int | |
170 | myreadc (arg) | |
171 | PTR arg; | |
172 | { | |
173 | return fgetc (stdin); | |
174 | } | |
175 | ||
176 | static char * | |
177 | mygets (arg, buffer, len) | |
178 | PTR arg; | |
179 | char *buffer; | |
180 | int len; | |
181 | { | |
182 | return fgets(buffer, len, stdin); | |
183 | } | |
184 | ||
9d561e1e NC |
185 | /* Prevent multiple calls to angel_RDI_close(). */ |
186 | static int closed_already = 1; | |
187 | ||
3a9c3d12 NC |
188 | /* Open a connection to a remote debugger. NAME is the filename used |
189 | for communication. */ | |
190 | ||
191 | static void | |
192 | arm_rdi_open (name, from_tty) | |
193 | char *name; | |
194 | int from_tty; | |
195 | { | |
196 | int rslt, i; | |
197 | unsigned long arg1, arg2; | |
198 | ||
199 | if (name == NULL) | |
200 | error ("To open an RDI connection, you need to specify what serial\n\ | |
201 | device is attached to the remote system (e.g. /dev/ttya)."); | |
202 | ||
203 | /* Make the basic low-level connection. */ | |
204 | ||
d9c02b1e | 205 | rslt = Adp_OpenDevice (name, NULL, 1); |
3a9c3d12 NC |
206 | |
207 | if (rslt != adp_ok) | |
d9c02b1e | 208 | error ("Could not open device \"%s\"", name); |
3a9c3d12 NC |
209 | |
210 | gdb_config.bytesex = 2 | (target_byte_order == BIG_ENDIAN ? 1 : 0); | |
211 | gdb_config.fpe = 1; | |
212 | gdb_config.rditype = 2; | |
213 | gdb_config.heartbeat_on = 1; | |
214 | gdb_config.flags = 2; | |
215 | ||
216 | gdb_hostif.dbgprint = myprint; | |
217 | gdb_hostif.dbgpause = mypause; | |
218 | gdb_hostif.dbgarg = stdout; | |
219 | gdb_hostif.writec = mywritec; | |
220 | gdb_hostif.readc = myreadc; | |
221 | gdb_hostif.write = mywrite; | |
222 | gdb_hostif.gets = mygets; | |
223 | gdb_hostif.hostosarg = stdout; | |
224 | gdb_hostif.reset = voiddummy; | |
225 | ||
226 | rslt = angel_RDI_open (10, &gdb_config, &gdb_hostif, NULL); | |
227 | if (rslt == RDIError_BigEndian || rslt == RDIError_LittleEndian) | |
228 | ; /* do nothing, this is the expected return */ | |
229 | else if (rslt) | |
230 | { | |
231 | printf_filtered ("RDI_open: %s\n", rdi_error_message (rslt)); | |
232 | } | |
233 | ||
234 | rslt = angel_RDI_info (RDIInfo_Target, &arg1, &arg2); | |
235 | if (rslt) | |
236 | { | |
237 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
238 | } | |
239 | rslt = angel_RDI_info (RDIInfo_Points, &arg1, &arg2); | |
240 | if (rslt) | |
241 | { | |
242 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
243 | } | |
244 | rslt = angel_RDI_info (RDIInfo_Step, &arg1, &arg2); | |
245 | if (rslt) | |
246 | { | |
247 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
248 | } | |
249 | rslt = angel_RDI_info (RDIInfo_CoPro, &arg1, &arg2); | |
250 | if (rslt) | |
251 | { | |
252 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
253 | } | |
254 | rslt = angel_RDI_info (RDIInfo_SemiHosting, &arg1, &arg2); | |
255 | if (rslt) | |
256 | { | |
257 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
258 | } | |
ed3e2cfe | 259 | |
3a9c3d12 NC |
260 | rslt = angel_RDI_info (RDIInfo_GetLoadSize, &arg1, &arg2); |
261 | if (rslt) | |
262 | { | |
263 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
264 | } | |
265 | max_load_size = arg1; | |
266 | ||
267 | push_target (&arm_rdi_ops); | |
268 | ||
269 | target_fetch_registers (-1); | |
270 | ||
271 | rslt = angel_RDI_open (1, &gdb_config, NULL, NULL); | |
272 | if (rslt) | |
273 | { | |
274 | printf_filtered ("RDI_open: %s\n", rdi_error_message (rslt)); | |
275 | } | |
276 | ||
277 | arg1 = 0x13b; | |
278 | rslt = angel_RDI_info (RDIVector_Catch, &arg1, &arg2); | |
279 | if (rslt) | |
280 | { | |
281 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
282 | } | |
283 | ||
284 | arg1 = (unsigned long) ""; | |
285 | rslt = angel_RDI_info (RDISet_Cmdline, &arg1, &arg2); | |
286 | if (rslt) | |
287 | { | |
288 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
289 | } | |
290 | ||
291 | /* Clear out any existing records of breakpoints. */ | |
292 | { | |
293 | struct local_bp_list_entry *entry, *preventry = NULL; | |
294 | ||
295 | for (entry = local_bp_list; entry != NULL; entry = entry->next) | |
296 | { | |
297 | if (preventry) | |
298 | free (preventry); | |
299 | } | |
300 | } | |
301 | ||
302 | printf_filtered ("Connected to ARM RDI target.\n"); | |
9d561e1e NC |
303 | |
304 | closed_already = 0; | |
3a9c3d12 NC |
305 | } |
306 | ||
307 | /* Start an inferior process and set inferior_pid to its pid. | |
308 | EXEC_FILE is the file to run. | |
309 | ARGS is a string containing the arguments to the program. | |
310 | ENV is the environment vector to pass. Errors reported with error(). | |
311 | On VxWorks and various standalone systems, we ignore exec_file. */ | |
312 | /* This is called not only when we first attach, but also when the | |
313 | user types "run" after having attached. */ | |
314 | ||
315 | static void | |
316 | arm_rdi_create_inferior (exec_file, args, env) | |
317 | char *exec_file; | |
318 | char *args; | |
319 | char **env; | |
320 | { | |
321 | int len, rslt; | |
322 | unsigned long arg1, arg2; | |
323 | char *arg_buf; | |
324 | CORE_ADDR entry_point; | |
325 | ||
326 | if (exec_file == 0 || exec_bfd == 0) | |
327 | error ("No exec file specified."); | |
328 | ||
329 | entry_point = (CORE_ADDR) bfd_get_start_address (exec_bfd); | |
330 | ||
331 | arm_rdi_kill (); | |
332 | remove_breakpoints (); | |
333 | init_wait_for_inferior (); | |
334 | ||
335 | len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10; | |
336 | arg_buf = (char *) alloca (len); | |
337 | arg_buf[0] = '\0'; | |
338 | strcat (arg_buf, exec_file); | |
339 | strcat (arg_buf, " "); | |
340 | strcat (arg_buf, args); | |
341 | ||
342 | inferior_pid = 42; | |
343 | insert_breakpoints (); /* Needed to get correct instruction in cache */ | |
344 | ||
f1f8c637 | 345 | if (env != NULL) |
3a9c3d12 NC |
346 | { |
347 | while (*env) | |
348 | { | |
f1f8c637 | 349 | if (strncmp (*env, "MEMSIZE=", sizeof ("MEMSIZE=") - 1) == 0) |
3a9c3d12 NC |
350 | { |
351 | unsigned long top_of_memory; | |
352 | char *end_of_num; | |
353 | ||
354 | /* Set up memory limit */ | |
f1f8c637 SS |
355 | top_of_memory = strtoul (*env + sizeof ("MEMSIZE=") - 1, |
356 | &end_of_num, 0); | |
3a9c3d12 NC |
357 | printf_filtered ("Setting top-of-memory to 0x%x\n", |
358 | top_of_memory); | |
359 | ||
f1f8c637 | 360 | rslt = angel_RDI_info (RDIInfo_SetTopMem, &top_of_memory, &arg2); |
3a9c3d12 NC |
361 | if (rslt) |
362 | { | |
363 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
364 | } | |
365 | } | |
366 | env++; | |
367 | } | |
368 | } | |
369 | ||
370 | arg1 = (unsigned long) arg_buf; | |
371 | rslt = angel_RDI_info (RDISet_Cmdline, /* &arg1 */ (unsigned long *)arg_buf, &arg2); | |
372 | if (rslt) | |
373 | { | |
374 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
375 | } | |
376 | ||
377 | proceed (entry_point, TARGET_SIGNAL_DEFAULT, 0); | |
378 | } | |
379 | ||
380 | /* This takes a program previously attached to and detaches it. After | |
381 | this is done, GDB can be used to debug some other program. We | |
382 | better not have left any breakpoints in the target program or it'll | |
383 | die when it hits one. */ | |
384 | ||
385 | static void | |
386 | arm_rdi_detach (args, from_tty) | |
387 | char *args; | |
388 | int from_tty; | |
389 | { | |
390 | /* (anything to do?) */ | |
391 | } | |
392 | ||
393 | /* Clean up connection to a remote debugger. */ | |
394 | ||
395 | static void | |
396 | arm_rdi_close (quitting) | |
397 | int quitting; | |
398 | { | |
399 | int rslt; | |
400 | ||
9d561e1e | 401 | if (! closed_already) |
3a9c3d12 | 402 | { |
9d561e1e NC |
403 | rslt = angel_RDI_close (); |
404 | if (rslt) | |
405 | { | |
406 | printf_filtered ("RDI_close: %s\n", rdi_error_message (rslt)); | |
407 | } | |
408 | closed_already = 1; | |
3a9c3d12 NC |
409 | } |
410 | } | |
411 | \f | |
412 | /* Tell the remote machine to resume. */ | |
413 | ||
414 | static void | |
415 | arm_rdi_resume (pid, step, siggnal) | |
416 | int pid, step; | |
417 | enum target_signal siggnal; | |
418 | { | |
419 | int rslt; | |
420 | PointHandle point; | |
421 | ||
422 | if (0 /* turn on when hardware supports single-stepping */) | |
423 | { | |
424 | rslt = angel_RDI_step (1, &point); | |
425 | if (rslt) | |
426 | { | |
427 | printf_filtered ("RDI_step: %s\n", rdi_error_message (rslt)); | |
428 | } | |
429 | } | |
430 | else | |
431 | { | |
432 | char handle[4]; | |
433 | CORE_ADDR pc; | |
434 | ||
435 | if (step) | |
436 | { | |
437 | pc = read_register (PC_REGNUM); | |
438 | pc = arm_get_next_pc (pc); | |
439 | arm_rdi_insert_breakpoint (pc, handle); | |
440 | } | |
441 | execute_status = rslt = angel_RDI_execute (&point); | |
442 | if (rslt == RDIError_BreakpointReached) | |
443 | ; | |
444 | else if (rslt) | |
445 | { | |
446 | printf_filtered ("RDI_execute: %s\n", rdi_error_message (rslt)); | |
447 | } | |
448 | if (step) | |
449 | { | |
450 | arm_rdi_remove_breakpoint (pc, handle); | |
451 | } | |
452 | } | |
453 | } | |
454 | \f | |
455 | /* Send ^C to target to halt it. Target will respond, and send us a | |
456 | packet. */ | |
457 | ||
458 | static void | |
459 | arm_rdi_interrupt (signo) | |
460 | int signo; | |
461 | { | |
462 | } | |
463 | ||
464 | static void (*ofunc)(); | |
465 | ||
466 | /* The user typed ^C twice. */ | |
467 | static void | |
468 | arm_rdi_interrupt_twice (signo) | |
469 | int signo; | |
470 | { | |
471 | } | |
472 | ||
473 | /* Ask the user what to do when an interrupt is received. */ | |
474 | ||
475 | static void | |
476 | interrupt_query () | |
477 | { | |
478 | } | |
479 | ||
480 | /* Wait until the remote machine stops, then return, storing status in | |
481 | STATUS just as `wait' would. Returns "pid" (though it's not clear | |
482 | what, if anything, that means in the case of this target). */ | |
483 | ||
484 | static int | |
485 | arm_rdi_wait (pid, status) | |
486 | int pid; | |
487 | struct target_waitstatus *status; | |
488 | { | |
f1f8c637 SS |
489 | status->kind = (execute_status == RDIError_NoError ? |
490 | TARGET_WAITKIND_EXITED : TARGET_WAITKIND_STOPPED); | |
3a9c3d12 NC |
491 | |
492 | /* convert stopped code from target into right signal */ | |
f1f8c637 | 493 | status->value.sig = rdi_error_signal (execute_status); |
3a9c3d12 NC |
494 | |
495 | return inferior_pid; | |
496 | } | |
497 | ||
498 | /* Read the remote registers into the block REGS. */ | |
499 | ||
500 | /* ARGSUSED */ | |
501 | static void | |
502 | arm_rdi_fetch_registers (regno) | |
503 | int regno; | |
504 | { | |
505 | int rslt, rdi_regmask; | |
506 | unsigned long rawreg, rawregs[32]; | |
507 | char cookedreg[4]; | |
508 | ||
509 | if (regno == -1) | |
510 | { | |
511 | rslt = angel_RDI_CPUread (255, 0x27fff, rawregs); | |
512 | if (rslt) | |
513 | { | |
514 | printf_filtered ("RDI_CPUread: %s\n", rdi_error_message (rslt)); | |
515 | } | |
516 | ||
517 | for (regno = 0; regno < 15; regno++) | |
518 | { | |
519 | store_unsigned_integer (cookedreg, 4, rawregs[regno]); | |
520 | supply_register (regno, (char *) cookedreg); | |
521 | } | |
522 | store_unsigned_integer (cookedreg, 4, rawregs[15]); | |
523 | supply_register (PS_REGNUM, (char *) cookedreg); | |
524 | arm_rdi_fetch_registers (PC_REGNUM); | |
525 | } | |
526 | else | |
527 | { | |
528 | if (regno == PC_REGNUM) | |
529 | rdi_regmask = RDIReg_PC; | |
530 | else if (regno == PS_REGNUM) | |
531 | rdi_regmask = RDIReg_CPSR; | |
532 | else if (regno < 0 || regno > 15) | |
533 | { | |
534 | rawreg = 0; | |
535 | supply_register (regno, (char *) &rawreg); | |
536 | return; | |
537 | } | |
538 | else | |
539 | rdi_regmask = 1 << regno; | |
540 | ||
541 | rslt = angel_RDI_CPUread (255, rdi_regmask, &rawreg); | |
542 | if (rslt) | |
543 | { | |
544 | printf_filtered ("RDI_CPUread: %s\n", rdi_error_message (rslt)); | |
545 | } | |
546 | store_unsigned_integer (cookedreg, 4, rawreg); | |
547 | supply_register (regno, (char *) cookedreg); | |
548 | } | |
549 | } | |
550 | ||
551 | static void | |
552 | arm_rdi_prepare_to_store () | |
553 | { | |
554 | /* Nothing to do. */ | |
555 | } | |
556 | ||
557 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
558 | of REGISTERS. FIXME: ignores errors. */ | |
559 | ||
560 | static void | |
561 | arm_rdi_store_registers (regno) | |
562 | int regno; | |
563 | { | |
564 | int rslt, rdi_regmask; | |
565 | ||
566 | /* These need to be able to take 'floating point register' contents */ | |
567 | unsigned long rawreg[3], rawerreg[3]; | |
568 | ||
569 | if (regno == -1) | |
570 | { | |
571 | for (regno = 0; regno < NUM_REGS; regno++) | |
572 | arm_rdi_store_registers (regno); | |
573 | } | |
574 | else | |
575 | { | |
576 | read_register_gen (regno, (char *) rawreg); | |
577 | /* RDI manipulates data in host byte order, so convert now. */ | |
578 | store_unsigned_integer (rawerreg, 4, rawreg[0]); | |
579 | ||
580 | if (regno == PC_REGNUM) | |
581 | rdi_regmask = RDIReg_PC; | |
582 | else if (regno == PS_REGNUM) | |
583 | rdi_regmask = RDIReg_CPSR; | |
584 | else if (regno < 0 || regno > 15) | |
585 | return; | |
586 | else | |
587 | rdi_regmask = 1 << regno; | |
588 | ||
589 | rslt = angel_RDI_CPUwrite (255, rdi_regmask, rawerreg); | |
590 | if (rslt) | |
591 | { | |
592 | printf_filtered ("RDI_CPUwrite: %s\n", rdi_error_message (rslt)); | |
593 | } | |
594 | } | |
595 | } | |
596 | \f | |
597 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
598 | transferring to or from debugger address MYADDR. Write to inferior | |
599 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
600 | read; 0 for error. */ | |
601 | ||
602 | /* ARGSUSED */ | |
603 | static int | |
604 | arm_rdi_xfer_memory(memaddr, myaddr, len, should_write, target) | |
605 | CORE_ADDR memaddr; | |
606 | char *myaddr; | |
607 | int len; | |
608 | int should_write; | |
609 | struct target_ops *target; /* ignored */ | |
610 | { | |
611 | int rslt, i; | |
612 | ||
613 | if (should_write) | |
614 | { | |
615 | rslt = angel_RDI_write (myaddr, memaddr, &len); | |
616 | if (rslt) | |
617 | { | |
618 | printf_filtered ("RDI_write: %s\n", rdi_error_message (rslt)); | |
619 | } | |
620 | } | |
621 | else | |
622 | { | |
623 | rslt = angel_RDI_read (memaddr, myaddr, &len); | |
624 | if (rslt) | |
625 | { | |
626 | printf_filtered ("RDI_read: %s\n", rdi_error_message (rslt)); | |
627 | len = 0; | |
628 | } | |
629 | } | |
630 | return len; | |
631 | } | |
632 | \f | |
633 | /* Display random info collected from the target. */ | |
634 | ||
635 | static void | |
636 | arm_rdi_files_info (ignore) | |
637 | struct target_ops *ignore; | |
638 | { | |
639 | char *file = "nothing"; | |
640 | int rslt; | |
641 | unsigned long arg1, arg2; | |
642 | ||
643 | rslt = angel_RDI_info (RDIInfo_Target, &arg1, &arg2); | |
644 | if (rslt) | |
645 | { | |
646 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
647 | } | |
648 | if (arg1 & (1 << 15)) | |
649 | printf_filtered ("Target supports Thumb code.\n"); | |
650 | if (arg1 & (1 << 14)) | |
651 | printf_filtered ("Target can do profiling.\n"); | |
652 | if (arg1 & (1 << 4)) | |
653 | printf_filtered ("Target is real hardware.\n"); | |
654 | ||
655 | rslt = angel_RDI_info (RDIInfo_Step, &arg1, &arg2); | |
656 | if (rslt) | |
657 | { | |
658 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
659 | } | |
660 | printf_filtered ("Target can%s single-step.\n", (arg1 & 0x4 ? "" : "not")); | |
661 | ||
662 | rslt = angel_RDI_info (RDIInfo_Icebreaker, &arg1, &arg2); | |
663 | if (rslt) | |
664 | { | |
665 | printf_filtered ("RDI_info: %s\n", rdi_error_message (rslt)); | |
666 | } | |
667 | else | |
668 | printf_filtered ("Target includes an EmbeddedICE.\n"); | |
669 | } | |
670 | \f | |
671 | static void | |
672 | arm_rdi_kill () | |
673 | { | |
674 | int rslt; | |
675 | ||
676 | rslt = angel_RDI_open (1, &gdb_config, NULL, NULL); | |
677 | if (rslt) | |
678 | { | |
679 | printf_filtered ("RDI_open: %s\n", rdi_error_message (rslt)); | |
680 | } | |
681 | } | |
682 | ||
683 | static void | |
684 | arm_rdi_mourn_inferior () | |
685 | { | |
686 | unpush_target (&arm_rdi_ops); | |
687 | generic_mourn_inferior (); | |
688 | } | |
689 | \f | |
690 | /* While the RDI library keeps track of its own breakpoints, we need | |
691 | to remember "handles" so that we can delete them later. Since | |
692 | breakpoints get used for stepping, be careful not to leak memory | |
693 | here. */ | |
694 | ||
695 | static int | |
696 | arm_rdi_insert_breakpoint (addr, contents_cache) | |
697 | CORE_ADDR addr; | |
698 | char *contents_cache; | |
699 | { | |
700 | int rslt; | |
701 | PointHandle point; | |
702 | struct local_bp_list_entry *entry; | |
703 | int type = RDIPoint_EQ; | |
704 | ||
705 | if (arm_pc_is_thumb (addr) || arm_pc_is_thumb_dummy (addr)) | |
706 | type |= RDIPoint_16Bit; | |
707 | rslt = angel_RDI_setbreak (addr, type, 0, &point); | |
708 | if (rslt) | |
709 | { | |
710 | printf_filtered ("RDI_setbreak: %s\n", rdi_error_message (rslt)); | |
711 | } | |
712 | entry = | |
713 | (struct local_bp_list_entry *) xmalloc (sizeof (struct local_bp_list_entry)); | |
714 | entry->addr = addr; | |
715 | entry->point = point; | |
716 | entry->next = local_bp_list; | |
717 | local_bp_list = entry; | |
718 | return rslt; | |
719 | } | |
720 | ||
721 | static int | |
722 | arm_rdi_remove_breakpoint (addr, contents_cache) | |
723 | CORE_ADDR addr; | |
724 | char *contents_cache; | |
725 | { | |
726 | int rslt; | |
727 | PointHandle point; | |
728 | struct local_bp_list_entry *entry, *preventry; | |
729 | ||
730 | for (entry = local_bp_list; entry != NULL; entry = entry->next) | |
731 | { | |
732 | if (entry->addr == addr) | |
733 | { | |
734 | break; | |
735 | } | |
736 | preventry = entry; | |
737 | } | |
738 | if (entry) | |
739 | { | |
740 | rslt = angel_RDI_clearbreak (entry->point); | |
741 | if (rslt) | |
742 | { | |
743 | printf_filtered ("RDI_clearbreak: %s\n", rdi_error_message (rslt)); | |
744 | } | |
745 | /* Delete the breakpoint entry locally. */ | |
746 | if (entry == local_bp_list) | |
747 | { | |
748 | local_bp_list = entry->next; | |
749 | } | |
750 | else | |
751 | { | |
752 | preventry->next = entry->next; | |
753 | } | |
754 | free (entry); | |
755 | } | |
756 | return 0; | |
757 | } | |
758 | \f | |
759 | static char * | |
760 | rdi_error_message (err) | |
761 | int err; | |
762 | { | |
763 | switch (err) | |
764 | { | |
765 | case RDIError_NoError: | |
766 | return "no error"; | |
767 | case RDIError_Reset: | |
768 | return "debuggee reset"; | |
769 | case RDIError_UndefinedInstruction: | |
770 | return "undefined instruction"; | |
771 | case RDIError_SoftwareInterrupt: | |
772 | return "SWI trapped"; | |
773 | case RDIError_PrefetchAbort: | |
774 | return "prefetch abort, execution ran into unmapped memory?"; | |
775 | case RDIError_DataAbort: | |
776 | return "data abort, no memory at specified address?"; | |
777 | case RDIError_AddressException: | |
778 | return "address exception, access >26bit in 26bit mode"; | |
779 | case RDIError_IRQ: | |
780 | return "IRQ, interrupt trapped"; | |
781 | case RDIError_FIQ: | |
782 | return "FIQ, fast interrupt trapped"; | |
783 | case RDIError_Error: | |
784 | return "a miscellaneous type of error"; | |
785 | case RDIError_BranchThrough0: | |
786 | return "branch through location 0"; | |
787 | case RDIError_NotInitialised: | |
788 | return "internal error, RDI_open not called first"; | |
789 | case RDIError_UnableToInitialise: | |
790 | return "internal error, target world is broken"; | |
791 | case RDIError_WrongByteSex: | |
792 | return "See Operator: WrongByteSex"; | |
793 | case RDIError_UnableToTerminate: | |
794 | return "See Operator: Unable to Terminate"; | |
795 | case RDIError_BadInstruction: | |
796 | return "bad instruction, illegal to execute this instruction"; | |
797 | case RDIError_IllegalInstruction: | |
798 | return "illegal instruction, the effect of executing it is undefined"; | |
799 | case RDIError_BadCPUStateSetting: | |
800 | return "internal error, tried to set SPSR of user mode"; | |
801 | case RDIError_UnknownCoPro: | |
802 | return "unknown co-processor"; | |
803 | case RDIError_UnknownCoProState: | |
804 | return "cannot execute co-processor request"; | |
805 | case RDIError_BadCoProState: | |
806 | return "recognizably broken co-processor request"; | |
807 | case RDIError_BadPointType: | |
808 | return "internal error, bad point yype"; | |
809 | case RDIError_UnimplementedType: | |
810 | return "internal error, unimplemented type"; | |
811 | case RDIError_BadPointSize: | |
812 | return "internal error, bad point size"; | |
813 | case RDIError_UnimplementedSize: | |
814 | return "internal error, unimplemented size"; | |
815 | case RDIError_NoMorePoints: | |
816 | return "last break/watch point was used"; | |
817 | case RDIError_BreakpointReached: | |
818 | return "breakpoint reached"; | |
819 | case RDIError_WatchpointAccessed: | |
820 | return "watchpoint accessed"; | |
821 | case RDIError_NoSuchPoint: | |
822 | return "attempted to clear non-existent break/watch point"; | |
823 | case RDIError_ProgramFinishedInStep: | |
824 | return "end of the program reached while stepping"; | |
825 | case RDIError_UserInterrupt: | |
826 | return "you pressed Escape"; | |
827 | case RDIError_CantSetPoint: | |
828 | return "no more break/watch points available"; | |
829 | case RDIError_IncompatibleRDILevels: | |
830 | return "incompatible RDI levels"; | |
831 | case RDIError_LittleEndian: | |
832 | return "debuggee is little endian"; | |
833 | case RDIError_BigEndian: | |
834 | return "debuggee is big endian"; | |
835 | case RDIError_SoftInitialiseError: | |
836 | return "recoverable error in RDI initialization"; | |
837 | case RDIError_InsufficientPrivilege: | |
838 | return "internal error, supervisor state not accessible to monitor"; | |
839 | case RDIError_UnimplementedMessage: | |
840 | return "internal error, unimplemented message"; | |
841 | case RDIError_UndefinedMessage: | |
842 | return "internal error, undefined message"; | |
843 | default: | |
844 | return "undefined error message, should reset target"; | |
845 | } | |
846 | } | |
847 | ||
848 | /* Convert the ARM error messages to signals that GDB knows about. */ | |
849 | ||
850 | static enum target_signal | |
851 | rdi_error_signal (err) | |
852 | int err; | |
853 | { | |
854 | switch (err) | |
855 | { | |
856 | case RDIError_NoError: | |
857 | return 0; | |
858 | case RDIError_Reset: | |
859 | return TARGET_SIGNAL_TERM; /* ??? */ | |
860 | case RDIError_UndefinedInstruction: | |
861 | return TARGET_SIGNAL_ILL; | |
862 | case RDIError_SoftwareInterrupt: | |
863 | case RDIError_PrefetchAbort: | |
864 | case RDIError_DataAbort: | |
865 | return TARGET_SIGNAL_TRAP; | |
866 | case RDIError_AddressException: | |
867 | return TARGET_SIGNAL_SEGV; | |
868 | case RDIError_IRQ: | |
869 | case RDIError_FIQ: | |
870 | return TARGET_SIGNAL_TRAP; | |
871 | case RDIError_Error: | |
872 | return TARGET_SIGNAL_TERM; | |
873 | case RDIError_BranchThrough0: | |
874 | return TARGET_SIGNAL_TRAP; | |
875 | case RDIError_NotInitialised: | |
876 | case RDIError_UnableToInitialise: | |
877 | case RDIError_WrongByteSex: | |
878 | case RDIError_UnableToTerminate: | |
879 | return TARGET_SIGNAL_UNKNOWN; | |
880 | case RDIError_BadInstruction: | |
881 | case RDIError_IllegalInstruction: | |
882 | return TARGET_SIGNAL_ILL; | |
883 | case RDIError_BadCPUStateSetting: | |
884 | case RDIError_UnknownCoPro: | |
885 | case RDIError_UnknownCoProState: | |
886 | case RDIError_BadCoProState: | |
887 | case RDIError_BadPointType: | |
888 | case RDIError_UnimplementedType: | |
889 | case RDIError_BadPointSize: | |
890 | case RDIError_UnimplementedSize: | |
891 | case RDIError_NoMorePoints: | |
892 | return TARGET_SIGNAL_UNKNOWN; | |
893 | case RDIError_BreakpointReached: | |
894 | case RDIError_WatchpointAccessed: | |
895 | return TARGET_SIGNAL_TRAP; | |
896 | case RDIError_NoSuchPoint: | |
897 | case RDIError_ProgramFinishedInStep: | |
898 | return TARGET_SIGNAL_UNKNOWN; | |
899 | case RDIError_UserInterrupt: | |
900 | return TARGET_SIGNAL_INT; | |
901 | case RDIError_IncompatibleRDILevels: | |
902 | case RDIError_LittleEndian: | |
903 | case RDIError_BigEndian: | |
904 | case RDIError_SoftInitialiseError: | |
905 | case RDIError_InsufficientPrivilege: | |
906 | case RDIError_UnimplementedMessage: | |
907 | case RDIError_UndefinedMessage: | |
908 | default: | |
909 | return TARGET_SIGNAL_UNKNOWN; | |
910 | } | |
911 | } | |
912 | \f | |
913 | /* Define the target operations structure. */ | |
914 | ||
f1f8c637 SS |
915 | static void |
916 | init_rdi_ops () | |
c719b714 | 917 | { |
f1f8c637 SS |
918 | arm_rdi_ops.to_shortname = "rdi"; |
919 | arm_rdi_ops.to_longname = "ARM RDI"; | |
920 | arm_rdi_ops.to_doc = "Use a remote ARM-based computer; via the RDI library.\n\ | |
c719b714 | 921 | Specify the serial device it is connected to (e.g. /dev/ttya)." ; |
f1f8c637 SS |
922 | arm_rdi_ops.to_open = arm_rdi_open; |
923 | arm_rdi_ops.to_close = arm_rdi_close; | |
924 | arm_rdi_ops.to_detach = arm_rdi_detach; | |
925 | arm_rdi_ops.to_resume = arm_rdi_resume; | |
926 | arm_rdi_ops.to_wait = arm_rdi_wait; | |
927 | arm_rdi_ops.to_fetch_registers = arm_rdi_fetch_registers; | |
928 | arm_rdi_ops.to_store_registers = arm_rdi_store_registers; | |
929 | arm_rdi_ops.to_prepare_to_store = arm_rdi_prepare_to_store; | |
930 | arm_rdi_ops.to_xfer_memory = arm_rdi_xfer_memory; | |
931 | arm_rdi_ops.to_files_info = arm_rdi_files_info; | |
932 | arm_rdi_ops.to_insert_breakpoint = arm_rdi_insert_breakpoint; | |
933 | arm_rdi_ops.to_remove_breakpoint = arm_rdi_remove_breakpoint; | |
934 | arm_rdi_ops.to_kill = arm_rdi_kill; | |
935 | arm_rdi_ops.to_load = generic_load; | |
936 | arm_rdi_ops.to_create_inferior = arm_rdi_create_inferior; | |
937 | arm_rdi_ops.to_mourn_inferior = arm_rdi_mourn_inferior; | |
938 | arm_rdi_ops.to_stratum = process_stratum; | |
939 | arm_rdi_ops.to_has_all_memory = 1; | |
940 | arm_rdi_ops.to_has_memory = 1; | |
941 | arm_rdi_ops.to_has_stack = 1; | |
942 | arm_rdi_ops.to_has_registers = 1; | |
943 | arm_rdi_ops.to_has_execution = 1; | |
944 | arm_rdi_ops.to_magic = OPS_MAGIC; | |
c719b714 | 945 | } |
3a9c3d12 NC |
946 | |
947 | void | |
948 | _initialize_remote_rdi () | |
949 | { | |
f1f8c637 | 950 | init_rdi_ops () ; |
3a9c3d12 NC |
951 | add_target (&arm_rdi_ops); |
952 | } | |
953 | ||
954 | /* A little dummy to make linking with the library succeed. */ | |
955 | ||
956 | Fail() {} |