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b80864fb | 1 | /* Low level interface to Windows debugging, for gdbserver. |
6aba47ca | 2 | Copyright (C) 2006, 2007 Free Software Foundation, Inc. |
b80864fb DJ |
3 | |
4 | Contributed by Leo Zayas. Based on "win32-nat.c" from GDB. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
21 | Boston, MA 02110-1301, USA. */ | |
22 | ||
23 | #include "server.h" | |
24 | #include "regcache.h" | |
25 | #include "gdb/signals.h" | |
ed50f18f PA |
26 | #include "mem-break.h" |
27 | #include "win32-low.h" | |
b80864fb DJ |
28 | |
29 | #include <windows.h> | |
ed50f18f | 30 | #include <winnt.h> |
b80864fb DJ |
31 | #include <imagehlp.h> |
32 | #include <psapi.h> | |
33 | #include <sys/param.h> | |
34 | #include <malloc.h> | |
35 | #include <process.h> | |
36 | ||
37 | #ifndef USE_WIN32API | |
38 | #include <sys/cygwin.h> | |
39 | #endif | |
40 | ||
41 | #define LOG 0 | |
42 | ||
43 | #define OUTMSG(X) do { printf X; fflush (stdout); } while (0) | |
44 | #if LOG | |
45 | #define OUTMSG2(X) do { printf X; fflush (stdout); } while (0) | |
46 | #else | |
ed50f18f PA |
47 | #define OUTMSG2(X) do ; while (0) |
48 | #endif | |
49 | ||
50 | #ifndef _T | |
51 | #define _T(x) TEXT (x) | |
52 | #endif | |
53 | ||
54 | #ifndef COUNTOF | |
55 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
56 | #endif |
57 | ||
bf914831 PA |
58 | #ifdef _WIN32_WCE |
59 | # define GETPROCADDRESS(DLL, PROC) \ | |
60 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) | |
61 | #else | |
62 | # define GETPROCADDRESS(DLL, PROC) \ | |
63 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) | |
64 | #endif | |
65 | ||
b80864fb DJ |
66 | int using_threads = 1; |
67 | ||
68 | /* Globals. */ | |
69 | static HANDLE current_process_handle = NULL; | |
70 | static DWORD current_process_id = 0; | |
71 | static enum target_signal last_sig = TARGET_SIGNAL_0; | |
72 | ||
73 | /* The current debug event from WaitForDebugEvent. */ | |
74 | static DEBUG_EVENT current_event; | |
75 | ||
76 | static int debug_registers_changed = 0; | |
77 | static int debug_registers_used = 0; | |
ed50f18f PA |
78 | |
79 | #define NUM_REGS (the_low_target.num_regs) | |
b80864fb | 80 | |
bf914831 PA |
81 | typedef BOOL WINAPI (*winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
82 | typedef BOOL WINAPI (*winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
b80864fb | 83 | |
ed50f18f PA |
84 | #ifndef CONTEXT_EXTENDED_REGISTERS |
85 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
86 | #endif | |
87 | ||
88 | #ifndef CONTEXT_FLOATING_POINT | |
89 | #define CONTEXT_FLOATING_POINT 0 | |
90 | #endif | |
91 | ||
92 | #ifndef CONTEXT_DEBUG_REGISTERS | |
93 | #define CONTEXT_DEBUG_REGISTERS 0 | |
94 | #endif | |
95 | ||
b80864fb DJ |
96 | #define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT) |
97 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ | |
98 | | CONTEXT_EXTENDED_REGISTERS | |
99 | ||
b80864fb DJ |
100 | static DWORD main_thread_id = 0; |
101 | ||
102 | /* Get the thread ID from the current selected inferior (the current | |
103 | thread). */ | |
104 | static DWORD | |
105 | current_inferior_tid (void) | |
106 | { | |
41093d81 | 107 | win32_thread_info *th = inferior_target_data (current_inferior); |
b80864fb DJ |
108 | return th->tid; |
109 | } | |
110 | ||
111 | /* Find a thread record given a thread id. If GET_CONTEXT is set then | |
112 | also retrieve the context for this thread. */ | |
41093d81 | 113 | static win32_thread_info * |
b80864fb DJ |
114 | thread_rec (DWORD id, int get_context) |
115 | { | |
116 | struct thread_info *thread; | |
41093d81 | 117 | win32_thread_info *th; |
b80864fb DJ |
118 | |
119 | thread = (struct thread_info *) find_inferior_id (&all_threads, id); | |
120 | if (thread == NULL) | |
121 | return NULL; | |
122 | ||
123 | th = inferior_target_data (thread); | |
124 | if (!th->suspend_count && get_context) | |
125 | { | |
126 | if (get_context > 0 && id != current_event.dwThreadId) | |
127 | th->suspend_count = SuspendThread (th->h) + 1; | |
128 | else if (get_context < 0) | |
129 | th->suspend_count = -1; | |
130 | ||
131 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
132 | ||
133 | GetThreadContext (th->h, &th->context); | |
134 | ||
135 | if (id == current_event.dwThreadId) | |
136 | { | |
137 | /* Copy dr values from that thread. */ | |
ed50f18f PA |
138 | if (the_low_target.store_debug_registers != NULL) |
139 | (*the_low_target.store_debug_registers) (th); | |
b80864fb DJ |
140 | } |
141 | } | |
142 | ||
143 | return th; | |
144 | } | |
145 | ||
146 | /* Add a thread to the thread list. */ | |
41093d81 | 147 | static win32_thread_info * |
b80864fb DJ |
148 | child_add_thread (DWORD tid, HANDLE h) |
149 | { | |
41093d81 | 150 | win32_thread_info *th; |
b80864fb DJ |
151 | |
152 | if ((th = thread_rec (tid, FALSE))) | |
153 | return th; | |
154 | ||
41093d81 | 155 | th = (win32_thread_info *) malloc (sizeof (*th)); |
b80864fb DJ |
156 | memset (th, 0, sizeof (*th)); |
157 | th->tid = tid; | |
158 | th->h = h; | |
159 | ||
160 | add_thread (tid, th, (unsigned int) tid); | |
161 | set_inferior_regcache_data ((struct thread_info *) | |
162 | find_inferior_id (&all_threads, tid), | |
163 | new_register_cache ()); | |
164 | ||
165 | /* Set the debug registers for the new thread if they are used. */ | |
ed50f18f PA |
166 | if (debug_registers_used |
167 | && the_low_target.load_debug_registers != NULL) | |
b80864fb DJ |
168 | { |
169 | /* Only change the value of the debug registers. */ | |
170 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
171 | ||
172 | GetThreadContext (th->h, &th->context); | |
173 | ||
ed50f18f PA |
174 | (*the_low_target.load_debug_registers) (th); |
175 | ||
b80864fb DJ |
176 | SetThreadContext (th->h, &th->context); |
177 | th->context.ContextFlags = 0; | |
178 | } | |
179 | ||
180 | return th; | |
181 | } | |
182 | ||
183 | /* Delete a thread from the list of threads. */ | |
184 | static void | |
185 | delete_thread_info (struct inferior_list_entry *thread) | |
186 | { | |
41093d81 | 187 | win32_thread_info *th = inferior_target_data ((struct thread_info *) thread); |
b80864fb DJ |
188 | |
189 | remove_thread ((struct thread_info *) thread); | |
190 | CloseHandle (th->h); | |
191 | free (th); | |
192 | } | |
193 | ||
194 | /* Delete a thread from the list of threads. */ | |
195 | static void | |
196 | child_delete_thread (DWORD id) | |
197 | { | |
198 | struct inferior_list_entry *thread; | |
199 | ||
200 | /* If the last thread is exiting, just return. */ | |
201 | if (all_threads.head == all_threads.tail) | |
202 | return; | |
203 | ||
204 | thread = find_inferior_id (&all_threads, id); | |
205 | if (thread == NULL) | |
206 | return; | |
207 | ||
208 | delete_thread_info (thread); | |
209 | } | |
210 | ||
211 | /* Transfer memory from/to the debugged process. */ | |
212 | static int | |
213 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
214 | int write, struct target_ops *target) | |
215 | { | |
216 | SIZE_T done; | |
217 | long addr = (long) memaddr; | |
218 | ||
219 | if (write) | |
220 | { | |
221 | WriteProcessMemory (current_process_handle, (LPVOID) addr, | |
222 | (LPCVOID) our, len, &done); | |
223 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); | |
224 | } | |
225 | else | |
226 | { | |
227 | ReadProcessMemory (current_process_handle, (LPCVOID) addr, (LPVOID) our, | |
228 | len, &done); | |
229 | } | |
230 | return done; | |
231 | } | |
232 | ||
233 | /* Generally, what has the program done? */ | |
234 | enum target_waitkind | |
235 | { | |
236 | /* The program has exited. The exit status is in value.integer. */ | |
237 | TARGET_WAITKIND_EXITED, | |
238 | ||
239 | /* The program has stopped with a signal. Which signal is in | |
240 | value.sig. */ | |
241 | TARGET_WAITKIND_STOPPED, | |
242 | ||
243 | /* The program is letting us know that it dynamically loaded something | |
244 | (e.g. it called load(2) on AIX). */ | |
245 | TARGET_WAITKIND_LOADED, | |
246 | ||
247 | /* The program has exec'ed a new executable file. The new file's | |
248 | pathname is pointed to by value.execd_pathname. */ | |
249 | ||
250 | TARGET_WAITKIND_EXECD, | |
251 | ||
252 | /* Nothing happened, but we stopped anyway. This perhaps should be handled | |
253 | within target_wait, but I'm not sure target_wait should be resuming the | |
254 | inferior. */ | |
255 | TARGET_WAITKIND_SPURIOUS, | |
256 | }; | |
257 | ||
258 | struct target_waitstatus | |
259 | { | |
260 | enum target_waitkind kind; | |
261 | ||
262 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
263 | union | |
264 | { | |
265 | int integer; | |
266 | enum target_signal sig; | |
267 | int related_pid; | |
268 | char *execd_pathname; | |
269 | int syscall_id; | |
270 | } | |
271 | value; | |
272 | }; | |
273 | ||
ed50f18f PA |
274 | /* Return a pointer into a CONTEXT field indexed by gdb register number. |
275 | Return a pointer to an dummy register holding zero if there is no | |
276 | corresponding CONTEXT field for the given register number. */ | |
277 | char * | |
278 | regptr (CONTEXT* c, int r) | |
279 | { | |
280 | if (the_low_target.regmap[r] < 0) | |
281 | { | |
282 | static ULONG zero; | |
283 | /* Always force value to zero, in case the user tried to write | |
284 | to this register before. */ | |
285 | zero = 0; | |
286 | return (char *) &zero; | |
287 | } | |
288 | else | |
289 | return (char *) c + the_low_target.regmap[r]; | |
290 | } | |
b80864fb | 291 | |
b80864fb | 292 | |
ed50f18f | 293 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
294 | state. */ |
295 | static void | |
296 | child_init_thread_list (void) | |
297 | { | |
298 | for_each_inferior (&all_threads, delete_thread_info); | |
299 | } | |
300 | ||
301 | static void | |
302 | do_initial_child_stuff (DWORD pid) | |
303 | { | |
b80864fb DJ |
304 | last_sig = TARGET_SIGNAL_0; |
305 | ||
306 | debug_registers_changed = 0; | |
307 | debug_registers_used = 0; | |
ed50f18f | 308 | |
b80864fb DJ |
309 | memset (¤t_event, 0, sizeof (current_event)); |
310 | ||
311 | child_init_thread_list (); | |
ed50f18f PA |
312 | |
313 | if (the_low_target.initial_stuff != NULL) | |
314 | (*the_low_target.initial_stuff) (); | |
b80864fb DJ |
315 | } |
316 | ||
317 | /* Resume all artificially suspended threads if we are continuing | |
318 | execution. */ | |
319 | static int | |
320 | continue_one_thread (struct inferior_list_entry *this_thread, void *id_ptr) | |
321 | { | |
322 | struct thread_info *thread = (struct thread_info *) this_thread; | |
323 | int thread_id = * (int *) id_ptr; | |
41093d81 | 324 | win32_thread_info *th = inferior_target_data (thread); |
b80864fb DJ |
325 | int i; |
326 | ||
327 | if ((thread_id == -1 || thread_id == th->tid) | |
328 | && th->suspend_count) | |
329 | { | |
330 | for (i = 0; i < th->suspend_count; i++) | |
331 | (void) ResumeThread (th->h); | |
332 | th->suspend_count = 0; | |
333 | if (debug_registers_changed) | |
334 | { | |
335 | /* Only change the value of the debug registers. */ | |
336 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
ed50f18f PA |
337 | |
338 | if (the_low_target.load_debug_registers != NULL) | |
339 | the_low_target.load_debug_registers (th); | |
340 | ||
b80864fb DJ |
341 | SetThreadContext (th->h, &th->context); |
342 | th->context.ContextFlags = 0; | |
343 | } | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | static BOOL | |
350 | child_continue (DWORD continue_status, int thread_id) | |
351 | { | |
352 | BOOL res; | |
353 | ||
354 | res = ContinueDebugEvent (current_event.dwProcessId, | |
355 | current_event.dwThreadId, continue_status); | |
356 | continue_status = 0; | |
357 | if (res) | |
358 | find_inferior (&all_threads, continue_one_thread, &thread_id); | |
359 | ||
360 | debug_registers_changed = 0; | |
361 | return res; | |
362 | } | |
363 | ||
b80864fb DJ |
364 | /* Fetch register(s) from the current thread context. */ |
365 | static void | |
366 | child_fetch_inferior_registers (int r) | |
367 | { | |
368 | int regno; | |
41093d81 | 369 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
370 | if (r == -1 || r == 0 || r > NUM_REGS) |
371 | child_fetch_inferior_registers (NUM_REGS); | |
372 | else | |
373 | for (regno = 0; regno < r; regno++) | |
ed50f18f | 374 | (*the_low_target.fetch_inferior_registers) (th, regno); |
b80864fb DJ |
375 | } |
376 | ||
377 | /* Get register from gdbserver regcache data. */ | |
378 | static void | |
41093d81 | 379 | do_child_store_inferior_registers (win32_thread_info *th, int r) |
b80864fb | 380 | { |
ed50f18f | 381 | collect_register (r, regptr (&th->context, r)); |
b80864fb DJ |
382 | } |
383 | ||
384 | /* Store a new register value into the current thread context. We don't | |
385 | change the program's context until later, when we resume it. */ | |
386 | static void | |
387 | child_store_inferior_registers (int r) | |
388 | { | |
389 | int regno; | |
41093d81 | 390 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
391 | if (r == -1 || r == 0 || r > NUM_REGS) |
392 | child_store_inferior_registers (NUM_REGS); | |
393 | else | |
394 | for (regno = 0; regno < r; regno++) | |
395 | do_child_store_inferior_registers (th, regno); | |
396 | } | |
397 | ||
ed50f18f PA |
398 | /* Map the Windows error number in ERROR to a locale-dependent error |
399 | message string and return a pointer to it. Typically, the values | |
400 | for ERROR come from GetLastError. | |
401 | ||
402 | The string pointed to shall not be modified by the application, | |
403 | but may be overwritten by a subsequent call to strwinerror | |
404 | ||
405 | The strwinerror function does not change the current setting | |
406 | of GetLastError. */ | |
407 | ||
408 | char * | |
409 | strwinerror (DWORD error) | |
410 | { | |
411 | static char buf[1024]; | |
412 | TCHAR *msgbuf; | |
413 | DWORD lasterr = GetLastError (); | |
414 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
415 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
416 | NULL, | |
417 | error, | |
418 | 0, /* Default language */ | |
419 | (LPVOID)&msgbuf, | |
420 | 0, | |
421 | NULL); | |
422 | if (chars != 0) | |
423 | { | |
424 | /* If there is an \r\n appended, zap it. */ | |
425 | if (chars >= 2 | |
426 | && msgbuf[chars - 2] == '\r' | |
427 | && msgbuf[chars - 1] == '\n') | |
428 | { | |
429 | chars -= 2; | |
430 | msgbuf[chars] = 0; | |
431 | } | |
432 | ||
433 | if (chars > ((COUNTOF (buf)) - 1)) | |
434 | { | |
435 | chars = COUNTOF (buf) - 1; | |
436 | msgbuf [chars] = 0; | |
437 | } | |
438 | ||
439 | #ifdef UNICODE | |
440 | wcstombs (buf, msgbuf, chars + 1); | |
441 | #else | |
442 | strncpy (buf, msgbuf, chars + 1); | |
443 | #endif | |
444 | LocalFree (msgbuf); | |
445 | } | |
446 | else | |
447 | sprintf (buf, "unknown win32 error (%ld)", error); | |
448 | ||
449 | SetLastError (lasterr); | |
450 | return buf; | |
451 | } | |
452 | ||
b80864fb DJ |
453 | /* Start a new process. |
454 | PROGRAM is a path to the program to execute. | |
455 | ARGS is a standard NULL-terminated array of arguments, | |
456 | to be passed to the inferior as ``argv''. | |
457 | Returns the new PID on success, -1 on failure. Registers the new | |
458 | process with the process list. */ | |
459 | static int | |
460 | win32_create_inferior (char *program, char **program_args) | |
461 | { | |
462 | #ifndef USE_WIN32API | |
463 | char real_path[MAXPATHLEN]; | |
464 | char *orig_path, *new_path, *path_ptr; | |
465 | #endif | |
b80864fb DJ |
466 | BOOL ret; |
467 | DWORD flags; | |
468 | char *args; | |
469 | int argslen; | |
470 | int argc; | |
ed50f18f PA |
471 | PROCESS_INFORMATION pi; |
472 | #ifndef __MINGW32CE__ | |
bf914831 | 473 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; |
ed50f18f PA |
474 | char *winenv = NULL; |
475 | #else | |
476 | wchar_t *wargs, *wprogram; | |
477 | #endif | |
b80864fb DJ |
478 | |
479 | if (!program) | |
480 | error ("No executable specified, specify executable to debug.\n"); | |
481 | ||
b80864fb DJ |
482 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
483 | ||
484 | #ifndef USE_WIN32API | |
485 | orig_path = NULL; | |
486 | path_ptr = getenv ("PATH"); | |
487 | if (path_ptr) | |
488 | { | |
489 | orig_path = alloca (strlen (path_ptr) + 1); | |
490 | new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr)); | |
491 | strcpy (orig_path, path_ptr); | |
492 | cygwin_posix_to_win32_path_list (path_ptr, new_path); | |
493 | setenv ("PATH", new_path, 1); | |
494 | } | |
495 | cygwin_conv_to_win32_path (program, real_path); | |
496 | program = real_path; | |
497 | #endif | |
498 | ||
ed50f18f | 499 | argslen = 1; |
b80864fb DJ |
500 | for (argc = 1; program_args[argc]; argc++) |
501 | argslen += strlen (program_args[argc]) + 1; | |
502 | args = alloca (argslen); | |
ed50f18f | 503 | args[0] = '\0'; |
b80864fb DJ |
504 | for (argc = 1; program_args[argc]; argc++) |
505 | { | |
506 | /* FIXME: Can we do better about quoting? How does Cygwin | |
507 | handle this? */ | |
508 | strcat (args, " "); | |
509 | strcat (args, program_args[argc]); | |
510 | } | |
ed50f18f | 511 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 512 | |
ed50f18f | 513 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 514 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 515 | #endif |
b80864fb | 516 | |
ed50f18f PA |
517 | #ifdef __MINGW32CE__ |
518 | to_back_slashes (program); | |
519 | wargs = alloca (argslen * sizeof (wchar_t)); | |
520 | mbstowcs (wargs, args, argslen); | |
521 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
522 | mbstowcs (wprogram, program, strlen (program) + 1); | |
523 | ret = CreateProcessW (wprogram, /* image name */ | |
524 | wargs, /* command line */ | |
525 | NULL, /* security, not supported */ | |
526 | NULL, /* thread, not supported */ | |
527 | FALSE, /* inherit handles, not supported */ | |
528 | flags, /* start flags */ | |
529 | NULL, /* environment, not supported */ | |
530 | NULL, /* current directory, not supported */ | |
531 | NULL, /* start info, not supported */ | |
532 | &pi); /* proc info */ | |
533 | #else | |
bf914831 PA |
534 | ret = CreateProcessA (program, /* image name */ |
535 | args, /* command line */ | |
536 | NULL, /* security */ | |
537 | NULL, /* thread */ | |
538 | TRUE, /* inherit handles */ | |
539 | flags, /* start flags */ | |
540 | winenv, /* environment */ | |
541 | NULL, /* current directory */ | |
542 | &si, /* start info */ | |
543 | &pi); /* proc info */ | |
ed50f18f | 544 | #endif |
b80864fb DJ |
545 | |
546 | #ifndef USE_WIN32API | |
547 | if (orig_path) | |
548 | setenv ("PATH", orig_path, 1); | |
549 | #endif | |
550 | ||
551 | if (!ret) | |
552 | { | |
ed50f18f PA |
553 | DWORD err = GetLastError (); |
554 | error ("Error creating process \"%s%s\", (error %d): %s\n", | |
555 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
556 | } |
557 | else | |
558 | { | |
559 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
560 | } | |
561 | ||
ed50f18f PA |
562 | #ifndef _WIN32_WCE |
563 | /* On Windows CE this handle can't be closed. The OS reuses | |
564 | it in the debug events, while the 9x/NT versions of Windows | |
565 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 566 | CloseHandle (pi.hThread); |
ed50f18f | 567 | #endif |
b80864fb DJ |
568 | |
569 | current_process_handle = pi.hProcess; | |
570 | current_process_id = pi.dwProcessId; | |
571 | ||
572 | do_initial_child_stuff (current_process_id); | |
573 | ||
574 | return current_process_id; | |
575 | } | |
576 | ||
577 | /* Attach to a running process. | |
578 | PID is the process ID to attach to, specified by the user | |
579 | or a higher layer. */ | |
580 | static int | |
581 | win32_attach (unsigned long pid) | |
582 | { | |
bf914831 PA |
583 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
584 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
585 | #ifdef _WIN32_WCE |
586 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
587 | #else | |
588 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
589 | #endif | |
bf914831 PA |
590 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
591 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 592 | |
1d5315fe PA |
593 | if (DebugActiveProcess (pid)) |
594 | { | |
595 | if (DebugSetProcessKillOnExit != NULL) | |
596 | DebugSetProcessKillOnExit (FALSE); | |
b80864fb | 597 | |
1d5315fe | 598 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
b80864fb | 599 | |
1d5315fe PA |
600 | if (current_process_handle != NULL) |
601 | { | |
602 | current_process_id = pid; | |
603 | do_initial_child_stuff (pid); | |
604 | return 0; | |
605 | } | |
b80864fb DJ |
606 | if (DebugActiveProcessStop != NULL) |
607 | DebugActiveProcessStop (current_process_id); | |
608 | } | |
609 | ||
1d5315fe | 610 | error ("Attach to process failed."); |
b80864fb DJ |
611 | } |
612 | ||
bce7165d PA |
613 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
614 | static void | |
615 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
616 | { | |
617 | #define READ_BUFFER_LEN 1024 | |
618 | CORE_ADDR addr; | |
619 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
620 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
621 | ||
622 | if (nbytes == 0) | |
623 | return; | |
624 | ||
625 | if (nbytes > READ_BUFFER_LEN) | |
626 | nbytes = READ_BUFFER_LEN; | |
627 | ||
628 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
629 | ||
630 | if (current_event.u.DebugString.fUnicode) | |
631 | { | |
632 | /* The event tells us how many bytes, not chars, even | |
633 | in Unicode. */ | |
634 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; | |
635 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
636 | return; | |
637 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
638 | } | |
639 | else | |
640 | { | |
641 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
642 | return; | |
643 | } | |
644 | ||
645 | if (strncmp (s, "cYg", 3) != 0) | |
646 | monitor_output (s); | |
647 | #undef READ_BUFFER_LEN | |
648 | } | |
649 | ||
b80864fb DJ |
650 | /* Kill all inferiors. */ |
651 | static void | |
652 | win32_kill (void) | |
653 | { | |
ed50f18f PA |
654 | win32_thread_info *current_thread; |
655 | ||
9d606399 DJ |
656 | if (current_process_handle == NULL) |
657 | return; | |
658 | ||
b80864fb DJ |
659 | TerminateProcess (current_process_handle, 0); |
660 | for (;;) | |
661 | { | |
662 | if (!child_continue (DBG_CONTINUE, -1)) | |
663 | break; | |
664 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
665 | break; | |
666 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
667 | break; | |
bce7165d PA |
668 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
669 | { | |
670 | struct target_waitstatus our_status = { 0 }; | |
671 | handle_output_debug_string (&our_status); | |
672 | } | |
b80864fb | 673 | } |
ed50f18f PA |
674 | |
675 | CloseHandle (current_process_handle); | |
676 | ||
677 | current_thread = inferior_target_data (current_inferior); | |
678 | if (current_thread && current_thread->h) | |
679 | { | |
680 | /* This may fail in an attached process, so don't check. */ | |
681 | (void) CloseHandle (current_thread->h); | |
682 | } | |
b80864fb DJ |
683 | } |
684 | ||
685 | /* Detach from all inferiors. */ | |
444d6139 | 686 | static int |
b80864fb DJ |
687 | win32_detach (void) |
688 | { | |
444d6139 PA |
689 | HANDLE h; |
690 | ||
bf914831 PA |
691 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
692 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
693 | #ifdef _WIN32_WCE |
694 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
695 | #else | |
696 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
697 | #endif | |
bf914831 PA |
698 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
699 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 700 | |
444d6139 PA |
701 | if (DebugSetProcessKillOnExit == NULL |
702 | || DebugActiveProcessStop == NULL) | |
703 | return -1; | |
b80864fb | 704 | |
444d6139 PA |
705 | /* We need a new handle, since DebugActiveProcessStop |
706 | closes all the ones that came through the events. */ | |
707 | if ((h = OpenProcess (PROCESS_ALL_ACCESS, | |
708 | FALSE, | |
709 | current_process_id)) == NULL) | |
710 | { | |
711 | /* The process died. */ | |
712 | return -1; | |
713 | } | |
714 | ||
715 | { | |
716 | struct thread_resume resume; | |
717 | resume.thread = -1; | |
718 | resume.step = 0; | |
719 | resume.sig = 0; | |
720 | resume.leave_stopped = 0; | |
721 | win32_resume (&resume); | |
722 | } | |
723 | ||
724 | if (!DebugActiveProcessStop (current_process_id)) | |
725 | { | |
726 | CloseHandle (h); | |
727 | return -1; | |
728 | } | |
729 | DebugSetProcessKillOnExit (FALSE); | |
730 | ||
731 | current_process_handle = h; | |
732 | return 0; | |
733 | } | |
734 | ||
735 | /* Wait for inferiors to end. */ | |
736 | static void | |
737 | win32_join (void) | |
738 | { | |
739 | if (current_process_id == 0 | |
740 | || current_process_handle == NULL) | |
741 | return; | |
742 | ||
743 | WaitForSingleObject (current_process_handle, INFINITE); | |
744 | CloseHandle (current_process_handle); | |
745 | ||
746 | current_process_handle = NULL; | |
747 | current_process_id = 0; | |
b80864fb DJ |
748 | } |
749 | ||
750 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
751 | static int | |
752 | win32_thread_alive (unsigned long tid) | |
753 | { | |
754 | int res; | |
755 | ||
756 | /* Our thread list is reliable; don't bother to poll target | |
757 | threads. */ | |
758 | if (find_inferior_id (&all_threads, tid) != NULL) | |
759 | res = 1; | |
760 | else | |
761 | res = 0; | |
762 | return res; | |
763 | } | |
764 | ||
765 | /* Resume the inferior process. RESUME_INFO describes how we want | |
766 | to resume. */ | |
767 | static void | |
768 | win32_resume (struct thread_resume *resume_info) | |
769 | { | |
770 | DWORD tid; | |
771 | enum target_signal sig; | |
772 | int step; | |
41093d81 | 773 | win32_thread_info *th; |
b80864fb DJ |
774 | DWORD continue_status = DBG_CONTINUE; |
775 | ||
776 | /* This handles the very limited set of resume packets that GDB can | |
777 | currently produce. */ | |
778 | ||
779 | if (resume_info[0].thread == -1) | |
780 | tid = -1; | |
781 | else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped) | |
782 | tid = -1; | |
783 | else | |
784 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
785 | the Windows resume code do the right thing for thread switching. */ | |
786 | tid = current_event.dwThreadId; | |
787 | ||
788 | if (resume_info[0].thread != -1) | |
789 | { | |
790 | sig = resume_info[0].sig; | |
791 | step = resume_info[0].step; | |
792 | } | |
793 | else | |
794 | { | |
795 | sig = 0; | |
796 | step = 0; | |
797 | } | |
798 | ||
799 | if (sig != TARGET_SIGNAL_0) | |
800 | { | |
801 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
802 | { | |
803 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); | |
804 | } | |
805 | else if (sig == last_sig) | |
806 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
807 | else | |
808 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); | |
809 | } | |
810 | ||
811 | last_sig = TARGET_SIGNAL_0; | |
812 | ||
813 | /* Get context for the currently selected thread. */ | |
814 | th = thread_rec (current_event.dwThreadId, FALSE); | |
815 | if (th) | |
816 | { | |
817 | if (th->context.ContextFlags) | |
818 | { | |
819 | if (debug_registers_changed) | |
ed50f18f PA |
820 | if (the_low_target.load_debug_registers != NULL) |
821 | (*the_low_target.load_debug_registers) (th); | |
b80864fb DJ |
822 | |
823 | /* Move register values from the inferior into the thread | |
824 | context structure. */ | |
825 | regcache_invalidate (); | |
826 | ||
827 | if (step) | |
ed50f18f PA |
828 | { |
829 | if (the_low_target.single_step != NULL) | |
830 | (*the_low_target.single_step) (th); | |
831 | else | |
832 | error ("Single stepping is not supported " | |
833 | "in this configuration.\n"); | |
834 | } | |
b80864fb DJ |
835 | SetThreadContext (th->h, &th->context); |
836 | th->context.ContextFlags = 0; | |
837 | } | |
838 | } | |
839 | ||
840 | /* Allow continuing with the same signal that interrupted us. | |
841 | Otherwise complain. */ | |
842 | ||
843 | child_continue (continue_status, tid); | |
844 | } | |
845 | ||
846 | static int | |
847 | handle_exception (struct target_waitstatus *ourstatus) | |
848 | { | |
41093d81 | 849 | win32_thread_info *th; |
b80864fb DJ |
850 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
851 | ||
852 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
853 | ||
854 | /* Record the context of the current thread. */ | |
855 | th = thread_rec (current_event.dwThreadId, -1); | |
856 | ||
857 | switch (code) | |
858 | { | |
859 | case EXCEPTION_ACCESS_VIOLATION: | |
860 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
861 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
862 | break; | |
863 | case STATUS_STACK_OVERFLOW: | |
864 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
865 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
866 | break; | |
867 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
868 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
869 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
870 | break; | |
871 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
872 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
873 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
874 | break; | |
875 | case STATUS_FLOAT_INEXACT_RESULT: | |
876 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
877 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
878 | break; | |
879 | case STATUS_FLOAT_INVALID_OPERATION: | |
880 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
881 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
882 | break; | |
883 | case STATUS_FLOAT_OVERFLOW: | |
884 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
885 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
886 | break; | |
887 | case STATUS_FLOAT_STACK_CHECK: | |
888 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
889 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
890 | break; | |
891 | case STATUS_FLOAT_UNDERFLOW: | |
892 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
893 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
894 | break; | |
895 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
896 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
897 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
898 | break; | |
899 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
900 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
901 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
902 | break; | |
903 | case STATUS_INTEGER_OVERFLOW: | |
904 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
905 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
906 | break; | |
907 | case EXCEPTION_BREAKPOINT: | |
908 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
909 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
ed50f18f PA |
910 | #ifdef _WIN32_WCE |
911 | /* Remove the initial breakpoint. */ | |
912 | check_breakpoints ((CORE_ADDR) (long) current_event | |
913 | .u.Exception.ExceptionRecord.ExceptionAddress); | |
914 | #endif | |
b80864fb DJ |
915 | break; |
916 | case DBG_CONTROL_C: | |
917 | OUTMSG2 (("DBG_CONTROL_C")); | |
918 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
919 | break; | |
920 | case DBG_CONTROL_BREAK: | |
921 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
922 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
923 | break; | |
924 | case EXCEPTION_SINGLE_STEP: | |
925 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
926 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
927 | break; | |
928 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
929 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
930 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
931 | break; | |
932 | case EXCEPTION_PRIV_INSTRUCTION: | |
933 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
934 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
935 | break; | |
936 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
937 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
938 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
939 | break; | |
940 | default: | |
941 | if (current_event.u.Exception.dwFirstChance) | |
942 | return 0; | |
943 | OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx", | |
944 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
945 | (DWORD) current_event.u.Exception.ExceptionRecord. | |
946 | ExceptionAddress)); | |
947 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
948 | break; | |
949 | } | |
950 | OUTMSG2 (("\n")); | |
951 | last_sig = ourstatus->value.sig; | |
952 | return 1; | |
953 | } | |
954 | ||
955 | /* Get the next event from the child. Return 1 if the event requires | |
956 | handling. */ | |
957 | static int | |
958 | get_child_debug_event (struct target_waitstatus *ourstatus) | |
959 | { | |
960 | BOOL debug_event; | |
961 | DWORD continue_status, event_code; | |
41093d81 PA |
962 | win32_thread_info *th = NULL; |
963 | static win32_thread_info dummy_thread_info; | |
b80864fb DJ |
964 | int retval = 0; |
965 | ||
966 | in: | |
967 | ||
968 | last_sig = TARGET_SIGNAL_0; | |
969 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
970 | ||
971 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) | |
972 | goto out; | |
973 | ||
974 | current_inferior = | |
975 | (struct thread_info *) find_inferior_id (&all_threads, | |
976 | current_event.dwThreadId); | |
977 | ||
978 | continue_status = DBG_CONTINUE; | |
979 | event_code = current_event.dwDebugEventCode; | |
980 | ||
981 | switch (event_code) | |
982 | { | |
983 | case CREATE_THREAD_DEBUG_EVENT: | |
984 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
985 | "for pid=%d tid=%x)\n", | |
986 | (unsigned) current_event.dwProcessId, | |
987 | (unsigned) current_event.dwThreadId)); | |
988 | ||
989 | /* Record the existence of this thread. */ | |
990 | th = child_add_thread (current_event.dwThreadId, | |
991 | current_event.u.CreateThread.hThread); | |
992 | ||
993 | retval = current_event.dwThreadId; | |
994 | break; | |
995 | ||
996 | case EXIT_THREAD_DEBUG_EVENT: | |
997 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
998 | "for pid=%d tid=%x\n", | |
999 | (unsigned) current_event.dwProcessId, | |
1000 | (unsigned) current_event.dwThreadId)); | |
1001 | child_delete_thread (current_event.dwThreadId); | |
1002 | th = &dummy_thread_info; | |
1003 | break; | |
1004 | ||
1005 | case CREATE_PROCESS_DEBUG_EVENT: | |
1006 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
1007 | "for pid=%d tid=%x\n", | |
1008 | (unsigned) current_event.dwProcessId, | |
1009 | (unsigned) current_event.dwThreadId)); | |
1010 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1011 | ||
1012 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1013 | main_thread_id = current_event.dwThreadId; | |
1014 | ||
1015 | ourstatus->kind = TARGET_WAITKIND_EXECD; | |
1016 | ourstatus->value.execd_pathname = "Main executable"; | |
1017 | ||
1018 | /* Add the main thread. */ | |
1019 | th = | |
1020 | child_add_thread (main_thread_id, | |
1021 | current_event.u.CreateProcessInfo.hThread); | |
1022 | ||
1023 | retval = ourstatus->value.related_pid = current_event.dwThreadId; | |
ed50f18f PA |
1024 | #ifdef _WIN32_WCE |
1025 | /* Windows CE doesn't set the initial breakpoint automatically | |
1026 | like the desktop versions of Windows do. We add it explicitly | |
1027 | here. It will be removed as soon as it is hit. */ | |
1028 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1029 | .CreateProcessInfo.lpStartAddress, | |
1030 | delete_breakpoint_at); | |
1031 | #endif | |
b80864fb DJ |
1032 | break; |
1033 | ||
1034 | case EXIT_PROCESS_DEBUG_EVENT: | |
1035 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
1036 | "for pid=%d tid=%x\n", | |
1037 | (unsigned) current_event.dwProcessId, | |
1038 | (unsigned) current_event.dwThreadId)); | |
1039 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1040 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1041 | CloseHandle (current_process_handle); | |
9d606399 | 1042 | current_process_handle = NULL; |
b80864fb DJ |
1043 | retval = main_thread_id; |
1044 | break; | |
1045 | ||
1046 | case LOAD_DLL_DEBUG_EVENT: | |
1047 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
1048 | "for pid=%d tid=%x\n", | |
1049 | (unsigned) current_event.dwProcessId, | |
1050 | (unsigned) current_event.dwThreadId)); | |
1051 | CloseHandle (current_event.u.LoadDll.hFile); | |
1052 | ||
1053 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
1054 | ourstatus->value.integer = 0; | |
1055 | retval = main_thread_id; | |
1056 | break; | |
1057 | ||
1058 | case UNLOAD_DLL_DEBUG_EVENT: | |
1059 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
1060 | "for pid=%d tid=%x\n", | |
1061 | (unsigned) current_event.dwProcessId, | |
1062 | (unsigned) current_event.dwThreadId)); | |
1063 | break; | |
1064 | ||
1065 | case EXCEPTION_DEBUG_EVENT: | |
1066 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
1067 | "for pid=%d tid=%x\n", | |
1068 | (unsigned) current_event.dwProcessId, | |
1069 | (unsigned) current_event.dwThreadId)); | |
1070 | retval = handle_exception (ourstatus); | |
1071 | break; | |
1072 | ||
1073 | case OUTPUT_DEBUG_STRING_EVENT: | |
1074 | /* A message from the kernel (or Cygwin). */ | |
1075 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
1076 | "for pid=%d tid=%x\n", | |
1077 | (unsigned) current_event.dwProcessId, | |
1078 | (unsigned) current_event.dwThreadId)); | |
bce7165d | 1079 | handle_output_debug_string (ourstatus); |
b80864fb DJ |
1080 | break; |
1081 | ||
1082 | default: | |
1083 | OUTMSG2 (("gdbserver: kernel event unknown " | |
1084 | "for pid=%d tid=%x code=%ld\n", | |
1085 | (unsigned) current_event.dwProcessId, | |
1086 | (unsigned) current_event.dwThreadId, | |
1087 | current_event.dwDebugEventCode)); | |
1088 | break; | |
1089 | } | |
1090 | ||
1091 | current_inferior = | |
1092 | (struct thread_info *) find_inferior_id (&all_threads, | |
1093 | current_event.dwThreadId); | |
1094 | ||
1095 | if (!retval || (event_code != EXCEPTION_DEBUG_EVENT && event_code != EXIT_PROCESS_DEBUG_EVENT)) | |
1096 | { | |
1097 | child_continue (continue_status, -1); | |
1098 | goto in; | |
1099 | } | |
1100 | ||
1101 | if (th == NULL) | |
1102 | thread_rec (current_event.dwThreadId, TRUE); | |
1103 | ||
1104 | out: | |
1105 | return retval; | |
1106 | } | |
1107 | ||
1108 | /* Wait for the inferior process to change state. | |
1109 | STATUS will be filled in with a response code to send to GDB. | |
1110 | Returns the signal which caused the process to stop. */ | |
1111 | static unsigned char | |
1112 | win32_wait (char *status) | |
1113 | { | |
1114 | struct target_waitstatus our_status; | |
1115 | ||
1116 | *status = 'T'; | |
1117 | ||
1118 | while (1) | |
1119 | { | |
1120 | get_child_debug_event (&our_status); | |
1121 | ||
1122 | if (our_status.kind == TARGET_WAITKIND_EXITED) | |
1123 | { | |
1124 | OUTMSG2 (("Child exited with retcode = %x\n", | |
1125 | our_status.value.integer)); | |
1126 | ||
1127 | *status = 'W'; | |
1128 | ||
1129 | child_fetch_inferior_registers (-1); | |
1130 | ||
1131 | return our_status.value.integer; | |
1132 | } | |
1133 | else if (our_status.kind == TARGET_WAITKIND_STOPPED) | |
1134 | { | |
f72f3e60 | 1135 | OUTMSG2 (("Child Stopped with signal = %d \n", |
ed50f18f | 1136 | our_status.value.sig)); |
b80864fb DJ |
1137 | |
1138 | *status = 'T'; | |
1139 | ||
1140 | child_fetch_inferior_registers (-1); | |
1141 | ||
1142 | return our_status.value.sig; | |
1143 | } | |
1144 | else | |
1145 | OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind)); | |
1146 | ||
1147 | { | |
1148 | struct thread_resume resume; | |
1149 | resume.thread = -1; | |
1150 | resume.step = 0; | |
1151 | resume.sig = 0; | |
1152 | resume.leave_stopped = 0; | |
1153 | win32_resume (&resume); | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | /* Fetch registers from the inferior process. | |
1159 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1160 | static void | |
1161 | win32_fetch_inferior_registers (int regno) | |
1162 | { | |
1163 | child_fetch_inferior_registers (regno); | |
1164 | } | |
1165 | ||
1166 | /* Store registers to the inferior process. | |
1167 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1168 | static void | |
1169 | win32_store_inferior_registers (int regno) | |
1170 | { | |
1171 | child_store_inferior_registers (regno); | |
1172 | } | |
1173 | ||
1174 | /* Read memory from the inferior process. This should generally be | |
1175 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1176 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1177 | static int | |
1178 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1179 | { | |
ed50f18f | 1180 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1181 | } |
1182 | ||
1183 | /* Write memory to the inferior process. This should generally be | |
1184 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1185 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1186 | Returns 0 on success and errno on failure. */ | |
1187 | static int | |
1188 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1189 | int len) | |
1190 | { | |
1191 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1192 | } | |
1193 | ||
820f2bda PA |
1194 | static const char * |
1195 | win32_arch_string (void) | |
1196 | { | |
ed50f18f | 1197 | return the_low_target.arch_string; |
820f2bda PA |
1198 | } |
1199 | ||
b80864fb DJ |
1200 | static struct target_ops win32_target_ops = { |
1201 | win32_create_inferior, | |
1202 | win32_attach, | |
1203 | win32_kill, | |
1204 | win32_detach, | |
444d6139 | 1205 | win32_join, |
b80864fb DJ |
1206 | win32_thread_alive, |
1207 | win32_resume, | |
1208 | win32_wait, | |
1209 | win32_fetch_inferior_registers, | |
1210 | win32_store_inferior_registers, | |
1211 | win32_read_inferior_memory, | |
1212 | win32_write_inferior_memory, | |
820f2bda PA |
1213 | NULL, |
1214 | NULL, | |
1215 | NULL, | |
1216 | NULL, | |
1217 | NULL, | |
1218 | NULL, | |
1219 | NULL, | |
1220 | NULL, | |
1221 | NULL, | |
1222 | win32_arch_string | |
b80864fb DJ |
1223 | }; |
1224 | ||
1225 | /* Initialize the Win32 backend. */ | |
1226 | void | |
1227 | initialize_low (void) | |
1228 | { | |
1229 | set_target_ops (&win32_target_ops); | |
ed50f18f PA |
1230 | if (the_low_target.breakpoint != NULL) |
1231 | set_breakpoint_data (the_low_target.breakpoint, | |
1232 | the_low_target.breakpoint_len); | |
b80864fb DJ |
1233 | init_registers (); |
1234 | } |