Commit | Line | Data |
---|---|---|
6c310da8 SG |
1 | /* ICE interface for the NEC V850 for GDB, the GNU debugger. |
2 | Copyright 1996, Free Software Foundation, Inc. | |
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 | ||
20 | #include "defs.h" | |
21 | #include "gdb_string.h" | |
22 | #if 0 | |
23 | #include "frame.h" | |
24 | #endif | |
25 | #include "inferior.h" | |
26 | #if 0 | |
27 | #include "bfd.h" | |
28 | #endif | |
29 | #include "symfile.h" | |
30 | #include "target.h" | |
31 | #if 0 | |
32 | #include "wait.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "objfiles.h" | |
35 | #include "gdb-stabs.h" | |
36 | #include "gdbthread.h" | |
37 | #endif | |
264b9de0 SG |
38 | #define WIN32_LEAN_AND_MEAN |
39 | #include <windows.h> | |
6c310da8 SG |
40 | |
41 | /* Prototypes for local functions */ | |
42 | ||
43 | static void v850ice_files_info PARAMS ((struct target_ops *ignore)); | |
44 | ||
45 | static int v850ice_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, | |
46 | int len, int should_write, | |
47 | struct target_ops *target)); | |
48 | ||
49 | static void v850ice_prepare_to_store PARAMS ((void)); | |
50 | ||
51 | static void v850ice_fetch_registers PARAMS ((int regno)); | |
52 | ||
53 | static void v850ice_resume PARAMS ((int pid, int step, | |
54 | enum target_signal siggnal)); | |
55 | ||
56 | static void v850ice_open PARAMS ((char *name, int from_tty)); | |
57 | ||
58 | static void v850ice_close PARAMS ((int quitting)); | |
59 | ||
60 | static void v850ice_store_registers PARAMS ((int regno)); | |
61 | ||
62 | static void v850ice_mourn PARAMS ((void)); | |
63 | ||
64 | static int v850ice_wait PARAMS ((int pid, struct target_waitstatus *status)); | |
65 | ||
66 | static void v850ice_kill PARAMS ((void)); | |
67 | ||
68 | static void v850ice_detach PARAMS ((char *args, int from_tty)); | |
69 | ||
70 | static int v850ice_insert_breakpoint PARAMS ((CORE_ADDR, char *)); | |
71 | ||
72 | static int v850ice_remove_breakpoint PARAMS ((CORE_ADDR, char *)); | |
73 | ||
74 | static int ice_open = 0; | |
75 | ||
76 | #ifndef EXPORT | |
77 | #define EXPORT __declspec(dllexport) | |
78 | #endif | |
79 | ||
264b9de0 SG |
80 | struct MessageIO |
81 | { | |
82 | int size; /* length of input or output in bytes */ | |
83 | char *buf; /* buffer having the input/output information */ | |
84 | }; | |
85 | ||
86 | struct MessageIO null_iob = { 0, NULL }; | |
87 | ||
88 | EXPORT long __stdcall ExeAppReq (char *, long, char *, struct MessageIO *); | |
89 | EXPORT long __stdcall RegisterClient (HWND); | |
90 | EXPORT long __stdcall UnregisterClient (void); | |
91 | EXPORT long __stdcall GdbCallBack (void); | |
6c310da8 SG |
92 | |
93 | #define MREADREG 0x0001 | |
94 | #define MWRITEREG 0x0002 | |
95 | #define MREADMEM 0x0003 | |
96 | #define MWRITEMEM 0x0004 | |
97 | #define MSINGLESTEP 0x0005 | |
98 | #define MRESUME 0x0006 | |
99 | #define MLOADPROGRAM 0x0007 | |
100 | #define MSETBREAK 0x0008 | |
101 | #define MREMOVEBREAK 0x0009 | |
102 | #define MQUIT 0x000A | |
103 | #define MTERMINATE 0x000B | |
104 | #define MATTACH 0x000C | |
105 | #define MCHECKSTATUS 0x000D | |
106 | #define MHALT 0x000E | |
107 | #define MDIRECTCMD 0x000F | |
108 | #define MSYMADR 0x0010 | |
109 | #define MGETTASKLIST 0x0011 | |
110 | #define MREADVECREG 0x0012 | |
111 | #define MWRITEVECREG 0x0013 | |
112 | #define MGETCHANGEDREGS 0x0014 | |
113 | #define MGETSERVERINFO 0x0015 | |
114 | #define MREADBLOCK 0x0016 | |
115 | #define MSETHARDBRK 0x0017 | |
116 | #define MREMOVEHARDBRK 0x0018 | |
117 | #define MCOPYBLOCK 0x0019 | |
118 | #define MBLOCKFILL 0x001A | |
119 | #define MFINDBLOCK 0x001B | |
120 | #define MCOMPAREBLOCK 0x001C | |
121 | #define MREFRESH 0x001D | |
122 | #define MSPECIAL 0x001E | |
123 | #define MGETCMDLIST 0x001F | |
124 | #define MEXPVAL 0x0020 | |
125 | #define MEXPFAILED 0x0021 | |
126 | #define MSAVESTATE 0x0022 | |
127 | #define MWRITEBLOCK 0x0023 | |
128 | #define MDETACH 0x0024 | |
129 | #define MGETMODULES 0x0025 | |
130 | #define MREMOTESYMBOL 0x0026 | |
131 | #define MREADCSTRING 0x0027 | |
132 | #define MLOADMODULE 0x0028 | |
133 | #define MDIDSYSCALL 0x0029 | |
134 | #define MDBPWRITEBUFFERS 0x002A | |
135 | #define MBPID 0x002B | |
136 | #define MINITEXEC 0x002C | |
137 | #define MEXITEXEC 0x002D | |
138 | #define MRCCMD 0x002E | |
139 | #define MDOWNLOAD 0x0050 | |
140 | ||
264b9de0 SG |
141 | #define StatRunning 0 |
142 | #define StatExecBreak 1 /* an execution breakpoint has been reached */ | |
143 | #define StatStepped 2 /* a single step has been completed */ | |
144 | #define StatException 3 /* the target has stopped due to an exception */ | |
145 | #define StatHalted 4 /* target has been halted by a user request */ | |
146 | #define StatExited 5 /* target called exit */ | |
147 | #define StatTerminated 6 /* target program terminated by a user request */ | |
148 | #define StatNoProcess 7 /* no process on target and none of the above */ | |
149 | #define StatNeedInput 8 /* REV: obsolete */ | |
150 | #define StatNeedDirCmd 9 /* waiting for an entry in the remote window */ | |
151 | #define StatHardBreak 10 /* hit hardware breakpoint */ | |
152 | #define StatFailure 11 /* an error occured in the last run/single */ | |
153 | ||
6c310da8 SG |
154 | extern struct target_ops v850ice_ops; /* Forward decl */ |
155 | ||
156 | /* "pir", "tkcw", "chcw", "adtre" */ | |
157 | ||
158 | /* Code for opening a connection to the ICE. */ | |
159 | ||
160 | static void | |
161 | v850ice_open (name, from_tty) | |
162 | char *name; | |
163 | int from_tty; | |
164 | { | |
165 | long retval; | |
6c310da8 SG |
166 | |
167 | if (name) | |
168 | error ("Too many arguments."); | |
169 | ||
170 | target_preopen (from_tty); | |
171 | ||
172 | unpush_target (&v850ice_ops); | |
173 | ||
174 | if (from_tty) | |
175 | puts_filtered ("V850ice debugging\n"); | |
176 | ||
177 | push_target (&v850ice_ops); /* Switch to using v850ice target now */ | |
178 | ||
179 | target_terminal_init (); | |
180 | ||
181 | /* Without this, some commands which require an active target (such as kill) | |
182 | won't work. This variable serves (at least) double duty as both the pid | |
183 | of the target process (if it has such), and as a flag indicating that a | |
184 | target is active. These functions should be split out into seperate | |
185 | variables, especially since GDB will someday have a notion of debugging | |
186 | several processes. */ | |
187 | ||
188 | inferior_pid = 42000; | |
189 | ||
190 | /* Start the v850ice connection; if error (0), discard this target. | |
191 | In particular, if the user quits, be sure to discard it | |
192 | (we'd be in an inconsistent state otherwise). */ | |
193 | ||
264b9de0 SG |
194 | WinExec ("necsrv", SW_SHOW); /* Start up necsrv */ |
195 | ||
196 | retval = RegisterClient (NULL); | |
197 | ||
198 | if (retval == 0) | |
199 | { | |
200 | ice_open = 1; | |
201 | ||
202 | start_remote (); | |
203 | return; | |
204 | } | |
6c310da8 | 205 | |
264b9de0 | 206 | pop_target(); |
6c310da8 | 207 | |
264b9de0 | 208 | error ("v850ice_open: MINITEXEC return error: 0x%x", retval); |
6c310da8 SG |
209 | } |
210 | ||
211 | /* Clean up connection to a remote debugger. */ | |
212 | ||
213 | /* ARGSUSED */ | |
214 | static void | |
215 | v850ice_close (quitting) | |
216 | int quitting; | |
217 | { | |
218 | long retval; | |
219 | ||
220 | if (ice_open) | |
221 | { | |
264b9de0 SG |
222 | #if 0 |
223 | retval = ExeAppReq ("GDB", MEXITEXEC, NULL, &null_iob); | |
6c310da8 SG |
224 | if (retval) |
225 | error ("ExeAppReq (MEXITEXEC) returned %d", retval); | |
264b9de0 | 226 | #endif |
6c310da8 | 227 | ice_open = 0; |
264b9de0 | 228 | UnregisterClient (); |
6c310da8 SG |
229 | } |
230 | } | |
231 | ||
232 | static void | |
233 | v850ice_detach (args, from_tty) | |
234 | char *args; | |
235 | int from_tty; | |
236 | { | |
237 | if (args) | |
238 | error ("Argument given to \"detach\" when remotely debugging."); | |
239 | ||
240 | pop_target (); | |
241 | if (from_tty) | |
242 | puts_filtered ("Ending v850ice debugging.\n"); | |
243 | } | |
244 | ||
245 | /* Tell the remote machine to resume. */ | |
246 | ||
247 | static void | |
248 | v850ice_resume (pid, step, siggnal) | |
249 | int pid, step; | |
250 | enum target_signal siggnal; | |
251 | { | |
252 | long retval; | |
6c310da8 SG |
253 | |
254 | if (step) | |
264b9de0 | 255 | retval = ExeAppReq ("GDB", MSINGLESTEP, "step", &null_iob); |
6c310da8 | 256 | else |
264b9de0 | 257 | retval = ExeAppReq ("GDB", MRESUME, "run", &null_iob); |
6c310da8 SG |
258 | |
259 | if (retval) | |
264b9de0 | 260 | error ("ExeAppReq (step = %d) returned %d", step, retval); |
6c310da8 SG |
261 | } |
262 | ||
263 | /* Wait until the remote machine stops, then return, | |
264 | storing status in STATUS just as `wait' would. | |
265 | Returns "pid" (though it's not clear what, if anything, that | |
266 | means in the case of this target). */ | |
267 | ||
268 | static int | |
269 | v850ice_wait (pid, status) | |
270 | int pid; | |
271 | struct target_waitstatus *status; | |
272 | { | |
264b9de0 SG |
273 | long v850_status; |
274 | ||
275 | v850_status = ExeAppReq ("GDB", MCHECKSTATUS, NULL, &null_iob); | |
276 | ||
6c310da8 SG |
277 | status->kind = TARGET_WAITKIND_STOPPED; |
278 | status->value.sig = TARGET_SIGNAL_TRAP; | |
279 | ||
280 | return inferior_pid; | |
281 | } | |
282 | ||
283 | static int | |
284 | convert_register (regno, buf) | |
285 | int regno; | |
286 | char *buf; | |
287 | { | |
288 | if (regno <= 31) | |
289 | sprintf (buf, "r%d", regno); | |
290 | else if (reg_names[regno][0] == 's' | |
291 | && reg_names[regno][1] == 'r') | |
292 | return 0; | |
293 | else | |
294 | sprintf (buf, "%s", reg_names[regno]); | |
295 | ||
296 | return 1; | |
297 | } | |
298 | ||
299 | /* Read the remote registers into the block REGS. */ | |
300 | /* Note that the ICE returns register contents as ascii hex strings. We have | |
301 | to convert that to an unsigned long, and then call store_unsigned_integer to | |
302 | convert it to target byte-order if necessary. */ | |
303 | ||
304 | static void | |
305 | v850ice_fetch_registers (regno) | |
306 | int regno; | |
307 | { | |
308 | long retval; | |
309 | char cmd[100]; | |
310 | char val[100]; | |
264b9de0 | 311 | struct MessageIO iob; |
6c310da8 SG |
312 | unsigned long regval; |
313 | char *p; | |
314 | ||
315 | if (regno == -1) | |
316 | { | |
317 | for (regno = 0; regno < NUM_REGS; regno++) | |
318 | v850ice_fetch_registers (regno); | |
319 | return; | |
320 | } | |
321 | ||
322 | strcpy (cmd, "reg "); | |
323 | if (!convert_register (regno, &cmd[4])) | |
324 | return; | |
325 | ||
264b9de0 SG |
326 | iob.size = sizeof val; |
327 | iob.buf = val; | |
328 | retval = ExeAppReq ("GDB", MREADREG, cmd, &iob); | |
6c310da8 SG |
329 | if (retval) |
330 | error ("ExeAppReq returned %d: cmd = %s", retval, cmd); | |
331 | ||
332 | regval = strtoul (val, &p, 16); | |
333 | if (regval == 0 && p == val) | |
334 | error ("v850ice_fetch_registers (%d): bad value from ICE: %s.", | |
335 | regno, val); | |
336 | ||
337 | store_unsigned_integer (val, REGISTER_RAW_SIZE (regno), regval); | |
338 | supply_register (regno, val); | |
339 | } | |
340 | ||
341 | /* Store register REGNO, or all registers if REGNO == -1, from the contents | |
342 | of REGISTERS. */ | |
343 | ||
344 | static void | |
345 | v850ice_store_registers (regno) | |
346 | int regno; | |
347 | { | |
348 | long retval; | |
349 | char cmd[100]; | |
6c310da8 SG |
350 | unsigned long regval; |
351 | ||
352 | if (regno == -1) | |
353 | { | |
354 | for (regno = 0; regno < NUM_REGS; regno++) | |
355 | v850ice_store_registers (regno); | |
356 | return; | |
357 | } | |
358 | ||
359 | regval = extract_unsigned_integer (®isters[REGISTER_BYTE (regno)], | |
360 | REGISTER_RAW_SIZE (regno)); | |
361 | strcpy (cmd, "reg "); | |
362 | if (!convert_register (regno, &cmd[4])) | |
363 | return; | |
364 | sprintf (cmd + strlen (cmd), "=0x%x", regval); | |
365 | ||
264b9de0 | 366 | retval = ExeAppReq ("GDB", MWRITEREG, cmd, &null_iob); |
6c310da8 SG |
367 | if (retval) |
368 | error ("ExeAppReq returned %d: cmd = %s", retval, cmd); | |
369 | } | |
370 | ||
371 | /* Prepare to store registers. Nothing to do here, since the ICE can write one | |
372 | register at a time. */ | |
373 | ||
374 | static void | |
375 | v850ice_prepare_to_store () | |
376 | { | |
377 | } | |
378 | ||
379 | /* Read or write LEN bytes from inferior memory at MEMADDR, transferring | |
380 | to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is | |
381 | nonzero. Returns length of data written or read; 0 for error. */ | |
382 | ||
383 | /* ARGSUSED */ | |
384 | static int | |
385 | v850ice_xfer_memory (memaddr, myaddr, len, should_write, target) | |
386 | CORE_ADDR memaddr; | |
387 | char *myaddr; | |
388 | int len; | |
389 | int should_write; | |
390 | struct target_ops *target; /* ignored */ | |
391 | { | |
392 | long retval; | |
393 | char cmd[100]; | |
264b9de0 SG |
394 | struct MessageIO iob; |
395 | ||
396 | iob.size = len; | |
397 | iob.buf = myaddr; | |
6c310da8 SG |
398 | |
399 | if (should_write) | |
400 | { | |
401 | #if 1 | |
402 | sprintf (cmd, "memory b c 0x%x=0x00 l=%d", (int)memaddr, len); | |
264b9de0 | 403 | retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob); |
6c310da8 SG |
404 | #else |
405 | sprintf (cmd, "memory b c 0x%x=0x%x", (int)memaddr, *myaddr & 0xff); | |
264b9de0 | 406 | retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob); |
6c310da8 SG |
407 | return 1; |
408 | #endif | |
409 | } | |
410 | else | |
411 | { | |
412 | unsigned char *tmp; | |
413 | int i; | |
414 | ||
415 | tmp = alloca (len + 100); | |
416 | memset (tmp + len, 0xff, 100); | |
417 | ||
264b9de0 | 418 | #if 1 |
6c310da8 | 419 | sprintf (cmd, "memory b 0x%x l=%d", (int)memaddr, len); |
264b9de0 SG |
420 | retval = ExeAppReq ("GDB", MREADBLOCK, cmd, &iob); |
421 | #else | |
422 | sprintf (cmd, "memory h 0x%x", (int)memaddr); | |
423 | retval = ExeAppReq ("GDB", MREADMEM, cmd, &iob); | |
424 | #endif | |
6c310da8 SG |
425 | for (i = 0; i < 100; i++) |
426 | { | |
427 | if (tmp[len + i] != 0xff) | |
428 | { | |
429 | warning ("MREADBLOCK trashed bytes after transfer area."); | |
430 | break; | |
431 | } | |
432 | } | |
433 | memcpy (myaddr, tmp, len); | |
434 | } | |
435 | ||
436 | if (retval) | |
437 | error ("ExeAppReq returned %d: cmd = %s", retval, cmd); | |
438 | ||
439 | return len; | |
440 | } | |
441 | ||
442 | static void | |
443 | v850ice_files_info (ignore) | |
444 | struct target_ops *ignore; | |
445 | { | |
446 | puts_filtered ("Debugging a target via the NEC V850 ICE.\n"); | |
447 | } | |
448 | ||
449 | static int | |
450 | v850ice_insert_breakpoint (addr, contents_cache) | |
451 | CORE_ADDR addr; | |
452 | char *contents_cache; | |
453 | { | |
454 | long retval; | |
455 | char cmd[100]; | |
6c310da8 SG |
456 | |
457 | sprintf (cmd, "%d, ", addr); | |
458 | ||
459 | #if 1 | |
264b9de0 | 460 | retval = ExeAppReq ("GDB", MSETBREAK, cmd, &null_iob); |
6c310da8 | 461 | #else |
264b9de0 | 462 | retval = ExeAppReq ("GDB", MSETHARDBRK, cmd, &null_iob); |
6c310da8 SG |
463 | #endif |
464 | if (retval) | |
465 | error ("ExeAppReq (MSETBREAK) returned %d: cmd = %s", retval, cmd); | |
466 | ||
467 | return 0; | |
468 | } | |
469 | ||
470 | static int | |
471 | v850ice_remove_breakpoint (addr, contents_cache) | |
472 | CORE_ADDR addr; | |
473 | char *contents_cache; | |
474 | { | |
475 | long retval; | |
476 | char cmd[100]; | |
6c310da8 SG |
477 | |
478 | sprintf (cmd, "%d, ", addr); | |
479 | ||
480 | #if 1 | |
264b9de0 | 481 | retval = ExeAppReq ("GDB", MREMOVEBREAK, cmd, &null_iob); |
6c310da8 | 482 | #else |
264b9de0 | 483 | retval = ExeAppReq ("GDB", MREMOVEHARDBRK, cmd, &null_iob); |
6c310da8 SG |
484 | #endif |
485 | if (retval) | |
486 | error ("ExeAppReq (MREMOVEBREAK) returned %d: cmd = %s", retval, cmd); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | static void | |
492 | v850ice_kill () | |
493 | { | |
494 | target_mourn_inferior (); | |
495 | } | |
496 | ||
497 | static void | |
498 | v850ice_mourn () | |
499 | { | |
500 | } | |
501 | ||
502 | /* Define the target subroutine names */ | |
503 | ||
504 | struct target_ops v850ice_ops = { | |
505 | "ice", /* to_shortname */ | |
506 | "NEC V850 ICE interface", /* to_longname */ | |
507 | "Debug a system controlled by a NEC 850 ICE.", /* to_doc */ | |
508 | v850ice_open, /* to_open */ | |
509 | v850ice_close, /* to_close */ | |
510 | NULL, /* to_attach */ | |
511 | v850ice_detach, /* to_detach */ | |
512 | v850ice_resume, /* to_resume */ | |
513 | v850ice_wait, /* to_wait */ | |
514 | v850ice_fetch_registers, /* to_fetch_registers */ | |
515 | v850ice_store_registers, /* to_store_registers */ | |
516 | v850ice_prepare_to_store, /* to_prepare_to_store */ | |
517 | v850ice_xfer_memory, /* to_xfer_memory */ | |
518 | v850ice_files_info, /* to_files_info */ | |
519 | v850ice_insert_breakpoint, /* to_insert_breakpoint */ | |
520 | v850ice_remove_breakpoint, /* to_remove_breakpoint */ | |
521 | NULL, /* to_terminal_init */ | |
522 | NULL, /* to_terminal_inferior */ | |
523 | NULL, /* to_terminal_ours_for_output */ | |
524 | NULL, /* to_terminal_ours */ | |
525 | NULL, /* to_terminal_info */ | |
526 | v850ice_kill, /* to_kill */ | |
527 | generic_load, /* to_load */ | |
528 | NULL, /* to_lookup_symbol */ | |
529 | NULL, /* to_create_inferior */ | |
530 | v850ice_mourn, /* to_mourn_inferior */ | |
531 | 0, /* to_can_run */ | |
532 | 0, /* to_notice_signals */ | |
533 | NULL, /* to_thread_alive */ | |
534 | 0, /* to_stop */ | |
535 | process_stratum, /* to_stratum */ | |
536 | NULL, /* to_next */ | |
537 | 1, /* to_has_all_memory */ | |
538 | 1, /* to_has_memory */ | |
539 | 1, /* to_has_stack */ | |
540 | 1, /* to_has_registers */ | |
541 | 1, /* to_has_execution */ | |
542 | NULL, /* sections */ | |
543 | NULL, /* sections_end */ | |
544 | OPS_MAGIC /* to_magic */ | |
545 | }; | |
546 | ||
547 | void | |
548 | _initialize_v850ice () | |
549 | { | |
550 | add_target (&v850ice_ops); | |
551 | } |