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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 | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
b80864fb DJ |
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 | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
b80864fb DJ |
20 | |
21 | #include "server.h" | |
22 | #include "regcache.h" | |
23 | #include "gdb/signals.h" | |
ed50f18f PA |
24 | #include "mem-break.h" |
25 | #include "win32-low.h" | |
b80864fb DJ |
26 | |
27 | #include <windows.h> | |
ed50f18f | 28 | #include <winnt.h> |
b80864fb | 29 | #include <imagehlp.h> |
255e7678 | 30 | #include <tlhelp32.h> |
b80864fb DJ |
31 | #include <psapi.h> |
32 | #include <sys/param.h> | |
33 | #include <malloc.h> | |
34 | #include <process.h> | |
35 | ||
36 | #ifndef USE_WIN32API | |
37 | #include <sys/cygwin.h> | |
38 | #endif | |
39 | ||
40 | #define LOG 0 | |
41 | ||
42 | #define OUTMSG(X) do { printf X; fflush (stdout); } while (0) | |
43 | #if LOG | |
44 | #define OUTMSG2(X) do { printf X; fflush (stdout); } while (0) | |
45 | #else | |
ed50f18f PA |
46 | #define OUTMSG2(X) do ; while (0) |
47 | #endif | |
48 | ||
49 | #ifndef _T | |
50 | #define _T(x) TEXT (x) | |
51 | #endif | |
52 | ||
53 | #ifndef COUNTOF | |
54 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
55 | #endif |
56 | ||
bf914831 PA |
57 | #ifdef _WIN32_WCE |
58 | # define GETPROCADDRESS(DLL, PROC) \ | |
59 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) | |
60 | #else | |
61 | # define GETPROCADDRESS(DLL, PROC) \ | |
62 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) | |
63 | #endif | |
64 | ||
b80864fb DJ |
65 | int using_threads = 1; |
66 | ||
67 | /* Globals. */ | |
68 | static HANDLE current_process_handle = NULL; | |
69 | static DWORD current_process_id = 0; | |
70 | static enum target_signal last_sig = TARGET_SIGNAL_0; | |
71 | ||
72 | /* The current debug event from WaitForDebugEvent. */ | |
73 | static DEBUG_EVENT current_event; | |
74 | ||
ed50f18f | 75 | #define NUM_REGS (the_low_target.num_regs) |
b80864fb | 76 | |
bf914831 PA |
77 | typedef BOOL WINAPI (*winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
78 | typedef BOOL WINAPI (*winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
7390519e PA |
79 | typedef BOOL WINAPI (*winapi_DebugBreakProcess) (HANDLE); |
80 | typedef BOOL WINAPI (*winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); | |
b80864fb | 81 | |
b80864fb DJ |
82 | static DWORD main_thread_id = 0; |
83 | ||
34b34921 PA |
84 | static void win32_resume (struct thread_resume *resume_info); |
85 | ||
b80864fb DJ |
86 | /* Get the thread ID from the current selected inferior (the current |
87 | thread). */ | |
88 | static DWORD | |
89 | current_inferior_tid (void) | |
90 | { | |
41093d81 | 91 | win32_thread_info *th = inferior_target_data (current_inferior); |
b80864fb DJ |
92 | return th->tid; |
93 | } | |
94 | ||
95 | /* Find a thread record given a thread id. If GET_CONTEXT is set then | |
96 | also retrieve the context for this thread. */ | |
41093d81 | 97 | static win32_thread_info * |
b80864fb DJ |
98 | thread_rec (DWORD id, int get_context) |
99 | { | |
100 | struct thread_info *thread; | |
41093d81 | 101 | win32_thread_info *th; |
b80864fb DJ |
102 | |
103 | thread = (struct thread_info *) find_inferior_id (&all_threads, id); | |
104 | if (thread == NULL) | |
105 | return NULL; | |
106 | ||
107 | th = inferior_target_data (thread); | |
108 | if (!th->suspend_count && get_context) | |
109 | { | |
34b34921 | 110 | if (id != current_event.dwThreadId) |
b80864fb | 111 | th->suspend_count = SuspendThread (th->h) + 1; |
b80864fb | 112 | |
34b34921 | 113 | (*the_low_target.get_thread_context) (th, ¤t_event); |
b80864fb DJ |
114 | } |
115 | ||
116 | return th; | |
117 | } | |
118 | ||
119 | /* Add a thread to the thread list. */ | |
41093d81 | 120 | static win32_thread_info * |
b80864fb DJ |
121 | child_add_thread (DWORD tid, HANDLE h) |
122 | { | |
41093d81 | 123 | win32_thread_info *th; |
b80864fb DJ |
124 | |
125 | if ((th = thread_rec (tid, FALSE))) | |
126 | return th; | |
127 | ||
41093d81 | 128 | th = (win32_thread_info *) malloc (sizeof (*th)); |
b80864fb DJ |
129 | memset (th, 0, sizeof (*th)); |
130 | th->tid = tid; | |
131 | th->h = h; | |
132 | ||
133 | add_thread (tid, th, (unsigned int) tid); | |
134 | set_inferior_regcache_data ((struct thread_info *) | |
135 | find_inferior_id (&all_threads, tid), | |
136 | new_register_cache ()); | |
137 | ||
34b34921 PA |
138 | if (the_low_target.thread_added != NULL) |
139 | (*the_low_target.thread_added) (th); | |
b80864fb DJ |
140 | |
141 | return th; | |
142 | } | |
143 | ||
144 | /* Delete a thread from the list of threads. */ | |
145 | static void | |
146 | delete_thread_info (struct inferior_list_entry *thread) | |
147 | { | |
41093d81 | 148 | win32_thread_info *th = inferior_target_data ((struct thread_info *) thread); |
b80864fb DJ |
149 | |
150 | remove_thread ((struct thread_info *) thread); | |
151 | CloseHandle (th->h); | |
152 | free (th); | |
153 | } | |
154 | ||
155 | /* Delete a thread from the list of threads. */ | |
156 | static void | |
157 | child_delete_thread (DWORD id) | |
158 | { | |
159 | struct inferior_list_entry *thread; | |
160 | ||
161 | /* If the last thread is exiting, just return. */ | |
162 | if (all_threads.head == all_threads.tail) | |
163 | return; | |
164 | ||
165 | thread = find_inferior_id (&all_threads, id); | |
166 | if (thread == NULL) | |
167 | return; | |
168 | ||
169 | delete_thread_info (thread); | |
170 | } | |
171 | ||
172 | /* Transfer memory from/to the debugged process. */ | |
173 | static int | |
174 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
175 | int write, struct target_ops *target) | |
176 | { | |
177 | SIZE_T done; | |
178 | long addr = (long) memaddr; | |
179 | ||
180 | if (write) | |
181 | { | |
182 | WriteProcessMemory (current_process_handle, (LPVOID) addr, | |
183 | (LPCVOID) our, len, &done); | |
184 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); | |
185 | } | |
186 | else | |
187 | { | |
188 | ReadProcessMemory (current_process_handle, (LPCVOID) addr, (LPVOID) our, | |
189 | len, &done); | |
190 | } | |
191 | return done; | |
192 | } | |
193 | ||
194 | /* Generally, what has the program done? */ | |
195 | enum target_waitkind | |
196 | { | |
197 | /* The program has exited. The exit status is in value.integer. */ | |
198 | TARGET_WAITKIND_EXITED, | |
199 | ||
200 | /* The program has stopped with a signal. Which signal is in | |
201 | value.sig. */ | |
202 | TARGET_WAITKIND_STOPPED, | |
203 | ||
255e7678 DJ |
204 | /* The program is letting us know that it dynamically loaded |
205 | or unloaded something. */ | |
b80864fb DJ |
206 | TARGET_WAITKIND_LOADED, |
207 | ||
208 | /* The program has exec'ed a new executable file. The new file's | |
209 | pathname is pointed to by value.execd_pathname. */ | |
b80864fb DJ |
210 | TARGET_WAITKIND_EXECD, |
211 | ||
7390519e PA |
212 | /* Nothing interesting happened, but we stopped anyway. We take the |
213 | chance to check if GDB requested an interrupt. */ | |
b80864fb DJ |
214 | TARGET_WAITKIND_SPURIOUS, |
215 | }; | |
216 | ||
217 | struct target_waitstatus | |
218 | { | |
219 | enum target_waitkind kind; | |
220 | ||
221 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
222 | union | |
223 | { | |
224 | int integer; | |
225 | enum target_signal sig; | |
226 | int related_pid; | |
227 | char *execd_pathname; | |
228 | int syscall_id; | |
229 | } | |
230 | value; | |
231 | }; | |
232 | ||
ed50f18f | 233 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
234 | state. */ |
235 | static void | |
236 | child_init_thread_list (void) | |
237 | { | |
238 | for_each_inferior (&all_threads, delete_thread_info); | |
239 | } | |
240 | ||
241 | static void | |
242 | do_initial_child_stuff (DWORD pid) | |
243 | { | |
b80864fb DJ |
244 | last_sig = TARGET_SIGNAL_0; |
245 | ||
b80864fb DJ |
246 | memset (¤t_event, 0, sizeof (current_event)); |
247 | ||
248 | child_init_thread_list (); | |
ed50f18f PA |
249 | |
250 | if (the_low_target.initial_stuff != NULL) | |
251 | (*the_low_target.initial_stuff) (); | |
b80864fb DJ |
252 | } |
253 | ||
254 | /* Resume all artificially suspended threads if we are continuing | |
255 | execution. */ | |
256 | static int | |
257 | continue_one_thread (struct inferior_list_entry *this_thread, void *id_ptr) | |
258 | { | |
259 | struct thread_info *thread = (struct thread_info *) this_thread; | |
260 | int thread_id = * (int *) id_ptr; | |
41093d81 | 261 | win32_thread_info *th = inferior_target_data (thread); |
b80864fb DJ |
262 | int i; |
263 | ||
264 | if ((thread_id == -1 || thread_id == th->tid) | |
265 | && th->suspend_count) | |
266 | { | |
34b34921 | 267 | if (th->context.ContextFlags) |
b80864fb | 268 | { |
34b34921 | 269 | (*the_low_target.set_thread_context) (th, ¤t_event); |
b80864fb DJ |
270 | th->context.ContextFlags = 0; |
271 | } | |
34b34921 PA |
272 | |
273 | for (i = 0; i < th->suspend_count; i++) | |
274 | (void) ResumeThread (th->h); | |
275 | th->suspend_count = 0; | |
b80864fb DJ |
276 | } |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static BOOL | |
282 | child_continue (DWORD continue_status, int thread_id) | |
283 | { | |
284 | BOOL res; | |
285 | ||
286 | res = ContinueDebugEvent (current_event.dwProcessId, | |
287 | current_event.dwThreadId, continue_status); | |
b80864fb DJ |
288 | if (res) |
289 | find_inferior (&all_threads, continue_one_thread, &thread_id); | |
290 | ||
b80864fb DJ |
291 | return res; |
292 | } | |
293 | ||
b80864fb DJ |
294 | /* Fetch register(s) from the current thread context. */ |
295 | static void | |
296 | child_fetch_inferior_registers (int r) | |
297 | { | |
298 | int regno; | |
41093d81 | 299 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
300 | if (r == -1 || r == 0 || r > NUM_REGS) |
301 | child_fetch_inferior_registers (NUM_REGS); | |
302 | else | |
303 | for (regno = 0; regno < r; regno++) | |
34b34921 | 304 | (*the_low_target.fetch_inferior_register) (th, regno); |
b80864fb DJ |
305 | } |
306 | ||
307 | /* Store a new register value into the current thread context. We don't | |
308 | change the program's context until later, when we resume it. */ | |
309 | static void | |
310 | child_store_inferior_registers (int r) | |
311 | { | |
312 | int regno; | |
41093d81 | 313 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
314 | if (r == -1 || r == 0 || r > NUM_REGS) |
315 | child_store_inferior_registers (NUM_REGS); | |
316 | else | |
317 | for (regno = 0; regno < r; regno++) | |
34b34921 | 318 | (*the_low_target.store_inferior_register) (th, regno); |
b80864fb DJ |
319 | } |
320 | ||
ed50f18f PA |
321 | /* Map the Windows error number in ERROR to a locale-dependent error |
322 | message string and return a pointer to it. Typically, the values | |
323 | for ERROR come from GetLastError. | |
324 | ||
325 | The string pointed to shall not be modified by the application, | |
326 | but may be overwritten by a subsequent call to strwinerror | |
327 | ||
328 | The strwinerror function does not change the current setting | |
329 | of GetLastError. */ | |
330 | ||
331 | char * | |
332 | strwinerror (DWORD error) | |
333 | { | |
334 | static char buf[1024]; | |
335 | TCHAR *msgbuf; | |
336 | DWORD lasterr = GetLastError (); | |
337 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
338 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
339 | NULL, | |
340 | error, | |
341 | 0, /* Default language */ | |
342 | (LPVOID)&msgbuf, | |
343 | 0, | |
344 | NULL); | |
345 | if (chars != 0) | |
346 | { | |
347 | /* If there is an \r\n appended, zap it. */ | |
348 | if (chars >= 2 | |
349 | && msgbuf[chars - 2] == '\r' | |
350 | && msgbuf[chars - 1] == '\n') | |
351 | { | |
352 | chars -= 2; | |
353 | msgbuf[chars] = 0; | |
354 | } | |
355 | ||
356 | if (chars > ((COUNTOF (buf)) - 1)) | |
357 | { | |
358 | chars = COUNTOF (buf) - 1; | |
359 | msgbuf [chars] = 0; | |
360 | } | |
361 | ||
362 | #ifdef UNICODE | |
363 | wcstombs (buf, msgbuf, chars + 1); | |
364 | #else | |
365 | strncpy (buf, msgbuf, chars + 1); | |
366 | #endif | |
367 | LocalFree (msgbuf); | |
368 | } | |
369 | else | |
370 | sprintf (buf, "unknown win32 error (%ld)", error); | |
371 | ||
372 | SetLastError (lasterr); | |
373 | return buf; | |
374 | } | |
375 | ||
aec18585 PA |
376 | static BOOL |
377 | create_process (const char *program, char *args, | |
378 | DWORD flags, PROCESS_INFORMATION *pi) | |
379 | { | |
380 | BOOL ret; | |
381 | ||
382 | #ifdef _WIN32_WCE | |
383 | wchar_t *p, *wprogram, *wargs; | |
384 | size_t argslen; | |
385 | ||
386 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
387 | mbstowcs (wprogram, program, strlen (program) + 1); | |
388 | ||
389 | for (p = wprogram; *p; ++p) | |
390 | if (L'/' == *p) | |
391 | *p = L'\\'; | |
392 | ||
393 | argslen = strlen (args); | |
394 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); | |
395 | mbstowcs (wargs, args, argslen + 1); | |
396 | ||
397 | ret = CreateProcessW (wprogram, /* image name */ | |
398 | wargs, /* command line */ | |
399 | NULL, /* security, not supported */ | |
400 | NULL, /* thread, not supported */ | |
401 | FALSE, /* inherit handles, not supported */ | |
402 | flags, /* start flags */ | |
403 | NULL, /* environment, not supported */ | |
404 | NULL, /* current directory, not supported */ | |
405 | NULL, /* start info, not supported */ | |
406 | pi); /* proc info */ | |
407 | #else | |
408 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; | |
409 | ||
410 | ret = CreateProcessA (program, /* image name */ | |
411 | args, /* command line */ | |
412 | NULL, /* security */ | |
413 | NULL, /* thread */ | |
414 | TRUE, /* inherit handles */ | |
415 | flags, /* start flags */ | |
416 | NULL, /* environment */ | |
417 | NULL, /* current directory */ | |
418 | &si, /* start info */ | |
419 | pi); /* proc info */ | |
420 | #endif | |
421 | ||
422 | return ret; | |
423 | } | |
424 | ||
b80864fb DJ |
425 | /* Start a new process. |
426 | PROGRAM is a path to the program to execute. | |
427 | ARGS is a standard NULL-terminated array of arguments, | |
428 | to be passed to the inferior as ``argv''. | |
429 | Returns the new PID on success, -1 on failure. Registers the new | |
430 | process with the process list. */ | |
431 | static int | |
432 | win32_create_inferior (char *program, char **program_args) | |
433 | { | |
434 | #ifndef USE_WIN32API | |
435 | char real_path[MAXPATHLEN]; | |
436 | char *orig_path, *new_path, *path_ptr; | |
437 | #endif | |
b80864fb DJ |
438 | BOOL ret; |
439 | DWORD flags; | |
440 | char *args; | |
441 | int argslen; | |
442 | int argc; | |
ed50f18f | 443 | PROCESS_INFORMATION pi; |
aec18585 | 444 | DWORD err; |
b80864fb DJ |
445 | |
446 | if (!program) | |
447 | error ("No executable specified, specify executable to debug.\n"); | |
448 | ||
b80864fb DJ |
449 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
450 | ||
451 | #ifndef USE_WIN32API | |
452 | orig_path = NULL; | |
453 | path_ptr = getenv ("PATH"); | |
454 | if (path_ptr) | |
455 | { | |
456 | orig_path = alloca (strlen (path_ptr) + 1); | |
457 | new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr)); | |
458 | strcpy (orig_path, path_ptr); | |
459 | cygwin_posix_to_win32_path_list (path_ptr, new_path); | |
460 | setenv ("PATH", new_path, 1); | |
461 | } | |
462 | cygwin_conv_to_win32_path (program, real_path); | |
463 | program = real_path; | |
464 | #endif | |
465 | ||
ed50f18f | 466 | argslen = 1; |
b80864fb DJ |
467 | for (argc = 1; program_args[argc]; argc++) |
468 | argslen += strlen (program_args[argc]) + 1; | |
469 | args = alloca (argslen); | |
ed50f18f | 470 | args[0] = '\0'; |
b80864fb DJ |
471 | for (argc = 1; program_args[argc]; argc++) |
472 | { | |
473 | /* FIXME: Can we do better about quoting? How does Cygwin | |
474 | handle this? */ | |
475 | strcat (args, " "); | |
476 | strcat (args, program_args[argc]); | |
477 | } | |
ed50f18f | 478 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 479 | |
ed50f18f | 480 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 481 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 482 | #endif |
b80864fb | 483 | |
aec18585 PA |
484 | ret = create_process (program, args, flags, &pi); |
485 | err = GetLastError (); | |
486 | if (!ret && err == ERROR_FILE_NOT_FOUND) | |
487 | { | |
488 | char *exename = alloca (strlen (program) + 5); | |
489 | strcat (strcpy (exename, program), ".exe"); | |
490 | ret = create_process (exename, args, flags, &pi); | |
491 | err = GetLastError (); | |
492 | } | |
b80864fb DJ |
493 | |
494 | #ifndef USE_WIN32API | |
495 | if (orig_path) | |
496 | setenv ("PATH", orig_path, 1); | |
497 | #endif | |
498 | ||
499 | if (!ret) | |
500 | { | |
ed50f18f PA |
501 | error ("Error creating process \"%s%s\", (error %d): %s\n", |
502 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
503 | } |
504 | else | |
505 | { | |
506 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
507 | } | |
508 | ||
ed50f18f PA |
509 | #ifndef _WIN32_WCE |
510 | /* On Windows CE this handle can't be closed. The OS reuses | |
511 | it in the debug events, while the 9x/NT versions of Windows | |
512 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 513 | CloseHandle (pi.hThread); |
ed50f18f | 514 | #endif |
b80864fb DJ |
515 | |
516 | current_process_handle = pi.hProcess; | |
517 | current_process_id = pi.dwProcessId; | |
518 | ||
519 | do_initial_child_stuff (current_process_id); | |
520 | ||
521 | return current_process_id; | |
522 | } | |
523 | ||
524 | /* Attach to a running process. | |
525 | PID is the process ID to attach to, specified by the user | |
526 | or a higher layer. */ | |
527 | static int | |
528 | win32_attach (unsigned long pid) | |
529 | { | |
bf914831 PA |
530 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
531 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
532 | #ifdef _WIN32_WCE |
533 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
534 | #else | |
535 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
536 | #endif | |
bf914831 PA |
537 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
538 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 539 | |
1d5315fe PA |
540 | if (DebugActiveProcess (pid)) |
541 | { | |
542 | if (DebugSetProcessKillOnExit != NULL) | |
543 | DebugSetProcessKillOnExit (FALSE); | |
b80864fb | 544 | |
1d5315fe | 545 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
b80864fb | 546 | |
1d5315fe PA |
547 | if (current_process_handle != NULL) |
548 | { | |
549 | current_process_id = pid; | |
550 | do_initial_child_stuff (pid); | |
551 | return 0; | |
552 | } | |
b80864fb DJ |
553 | if (DebugActiveProcessStop != NULL) |
554 | DebugActiveProcessStop (current_process_id); | |
555 | } | |
556 | ||
1d5315fe | 557 | error ("Attach to process failed."); |
b80864fb DJ |
558 | } |
559 | ||
bce7165d PA |
560 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
561 | static void | |
562 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
563 | { | |
564 | #define READ_BUFFER_LEN 1024 | |
565 | CORE_ADDR addr; | |
566 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
567 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
568 | ||
569 | if (nbytes == 0) | |
570 | return; | |
571 | ||
572 | if (nbytes > READ_BUFFER_LEN) | |
573 | nbytes = READ_BUFFER_LEN; | |
574 | ||
575 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
576 | ||
577 | if (current_event.u.DebugString.fUnicode) | |
578 | { | |
579 | /* The event tells us how many bytes, not chars, even | |
580 | in Unicode. */ | |
581 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; | |
582 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
583 | return; | |
584 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
585 | } | |
586 | else | |
587 | { | |
588 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
589 | return; | |
590 | } | |
591 | ||
592 | if (strncmp (s, "cYg", 3) != 0) | |
45e2715e PA |
593 | { |
594 | if (!server_waiting) | |
595 | { | |
596 | OUTMSG2(("%s", s)); | |
597 | return; | |
598 | } | |
599 | ||
600 | monitor_output (s); | |
601 | } | |
bce7165d PA |
602 | #undef READ_BUFFER_LEN |
603 | } | |
604 | ||
b80864fb DJ |
605 | /* Kill all inferiors. */ |
606 | static void | |
607 | win32_kill (void) | |
608 | { | |
ed50f18f PA |
609 | win32_thread_info *current_thread; |
610 | ||
9d606399 DJ |
611 | if (current_process_handle == NULL) |
612 | return; | |
613 | ||
b80864fb DJ |
614 | TerminateProcess (current_process_handle, 0); |
615 | for (;;) | |
616 | { | |
617 | if (!child_continue (DBG_CONTINUE, -1)) | |
618 | break; | |
619 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
620 | break; | |
621 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
622 | break; | |
bce7165d PA |
623 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
624 | { | |
625 | struct target_waitstatus our_status = { 0 }; | |
626 | handle_output_debug_string (&our_status); | |
627 | } | |
b80864fb | 628 | } |
ed50f18f PA |
629 | |
630 | CloseHandle (current_process_handle); | |
631 | ||
632 | current_thread = inferior_target_data (current_inferior); | |
633 | if (current_thread && current_thread->h) | |
634 | { | |
635 | /* This may fail in an attached process, so don't check. */ | |
636 | (void) CloseHandle (current_thread->h); | |
637 | } | |
b80864fb DJ |
638 | } |
639 | ||
640 | /* Detach from all inferiors. */ | |
444d6139 | 641 | static int |
b80864fb DJ |
642 | win32_detach (void) |
643 | { | |
444d6139 PA |
644 | HANDLE h; |
645 | ||
bf914831 PA |
646 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
647 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
648 | #ifdef _WIN32_WCE |
649 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
650 | #else | |
651 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
652 | #endif | |
bf914831 PA |
653 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
654 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 655 | |
444d6139 PA |
656 | if (DebugSetProcessKillOnExit == NULL |
657 | || DebugActiveProcessStop == NULL) | |
658 | return -1; | |
b80864fb | 659 | |
444d6139 PA |
660 | /* We need a new handle, since DebugActiveProcessStop |
661 | closes all the ones that came through the events. */ | |
662 | if ((h = OpenProcess (PROCESS_ALL_ACCESS, | |
663 | FALSE, | |
664 | current_process_id)) == NULL) | |
665 | { | |
666 | /* The process died. */ | |
667 | return -1; | |
668 | } | |
669 | ||
670 | { | |
671 | struct thread_resume resume; | |
672 | resume.thread = -1; | |
673 | resume.step = 0; | |
674 | resume.sig = 0; | |
675 | resume.leave_stopped = 0; | |
676 | win32_resume (&resume); | |
677 | } | |
678 | ||
679 | if (!DebugActiveProcessStop (current_process_id)) | |
680 | { | |
681 | CloseHandle (h); | |
682 | return -1; | |
683 | } | |
684 | DebugSetProcessKillOnExit (FALSE); | |
685 | ||
686 | current_process_handle = h; | |
687 | return 0; | |
688 | } | |
689 | ||
690 | /* Wait for inferiors to end. */ | |
691 | static void | |
692 | win32_join (void) | |
693 | { | |
694 | if (current_process_id == 0 | |
695 | || current_process_handle == NULL) | |
696 | return; | |
697 | ||
698 | WaitForSingleObject (current_process_handle, INFINITE); | |
699 | CloseHandle (current_process_handle); | |
700 | ||
701 | current_process_handle = NULL; | |
702 | current_process_id = 0; | |
b80864fb DJ |
703 | } |
704 | ||
705 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
706 | static int | |
707 | win32_thread_alive (unsigned long tid) | |
708 | { | |
709 | int res; | |
710 | ||
711 | /* Our thread list is reliable; don't bother to poll target | |
712 | threads. */ | |
713 | if (find_inferior_id (&all_threads, tid) != NULL) | |
714 | res = 1; | |
715 | else | |
716 | res = 0; | |
717 | return res; | |
718 | } | |
719 | ||
720 | /* Resume the inferior process. RESUME_INFO describes how we want | |
721 | to resume. */ | |
722 | static void | |
723 | win32_resume (struct thread_resume *resume_info) | |
724 | { | |
725 | DWORD tid; | |
726 | enum target_signal sig; | |
727 | int step; | |
41093d81 | 728 | win32_thread_info *th; |
b80864fb DJ |
729 | DWORD continue_status = DBG_CONTINUE; |
730 | ||
731 | /* This handles the very limited set of resume packets that GDB can | |
732 | currently produce. */ | |
733 | ||
734 | if (resume_info[0].thread == -1) | |
735 | tid = -1; | |
736 | else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped) | |
737 | tid = -1; | |
738 | else | |
739 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
740 | the Windows resume code do the right thing for thread switching. */ | |
741 | tid = current_event.dwThreadId; | |
742 | ||
743 | if (resume_info[0].thread != -1) | |
744 | { | |
745 | sig = resume_info[0].sig; | |
746 | step = resume_info[0].step; | |
747 | } | |
748 | else | |
749 | { | |
750 | sig = 0; | |
751 | step = 0; | |
752 | } | |
753 | ||
754 | if (sig != TARGET_SIGNAL_0) | |
755 | { | |
756 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
757 | { | |
758 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); | |
759 | } | |
760 | else if (sig == last_sig) | |
761 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
762 | else | |
763 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); | |
764 | } | |
765 | ||
766 | last_sig = TARGET_SIGNAL_0; | |
767 | ||
768 | /* Get context for the currently selected thread. */ | |
769 | th = thread_rec (current_event.dwThreadId, FALSE); | |
770 | if (th) | |
771 | { | |
772 | if (th->context.ContextFlags) | |
773 | { | |
b80864fb DJ |
774 | /* Move register values from the inferior into the thread |
775 | context structure. */ | |
776 | regcache_invalidate (); | |
777 | ||
778 | if (step) | |
ed50f18f PA |
779 | { |
780 | if (the_low_target.single_step != NULL) | |
781 | (*the_low_target.single_step) (th); | |
782 | else | |
783 | error ("Single stepping is not supported " | |
784 | "in this configuration.\n"); | |
785 | } | |
34b34921 PA |
786 | |
787 | (*the_low_target.set_thread_context) (th, ¤t_event); | |
b80864fb DJ |
788 | th->context.ContextFlags = 0; |
789 | } | |
790 | } | |
791 | ||
792 | /* Allow continuing with the same signal that interrupted us. | |
793 | Otherwise complain. */ | |
794 | ||
795 | child_continue (continue_status, tid); | |
796 | } | |
797 | ||
255e7678 DJ |
798 | static void |
799 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
800 | { | |
801 | char buf[MAX_PATH + 1]; | |
802 | char buf2[MAX_PATH + 1]; | |
803 | ||
804 | #ifdef _WIN32_WCE | |
805 | WIN32_FIND_DATA w32_fd; | |
806 | WCHAR wname[MAX_PATH + 1]; | |
807 | mbstowcs (wname, name, MAX_PATH); | |
808 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
809 | #else | |
810 | WIN32_FIND_DATAA w32_fd; | |
811 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
812 | #endif | |
813 | ||
814 | if (h == INVALID_HANDLE_VALUE) | |
815 | strcpy (buf, name); | |
816 | else | |
817 | { | |
818 | FindClose (h); | |
819 | strcpy (buf, name); | |
820 | #ifndef _WIN32_WCE | |
821 | { | |
822 | char cwd[MAX_PATH + 1]; | |
823 | char *p; | |
824 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
825 | { | |
826 | p = strrchr (buf, '\\'); | |
827 | if (p) | |
828 | p[1] = '\0'; | |
829 | SetCurrentDirectoryA (buf); | |
830 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
831 | SetCurrentDirectoryA (cwd); | |
832 | } | |
833 | } | |
834 | #endif | |
835 | } | |
836 | ||
837 | #ifdef __CYGWIN__ | |
838 | cygwin_conv_to_posix_path (buf, buf2); | |
839 | #else | |
840 | strcpy (buf2, buf); | |
841 | #endif | |
842 | ||
843 | loaded_dll (buf2, load_addr); | |
844 | } | |
845 | ||
846 | static char * | |
847 | get_image_name (HANDLE h, void *address, int unicode) | |
848 | { | |
849 | static char buf[(2 * MAX_PATH) + 1]; | |
850 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
851 | char *address_ptr; | |
852 | int len = 0; | |
853 | char b[2]; | |
854 | DWORD done; | |
855 | ||
856 | /* Attempt to read the name of the dll that was detected. | |
857 | This is documented to work only when actively debugging | |
858 | a program. It will not work for attached processes. */ | |
859 | if (address == NULL) | |
860 | return NULL; | |
861 | ||
862 | #ifdef _WIN32_WCE | |
863 | /* Windows CE reports the address of the image name, | |
864 | instead of an address of a pointer into the image name. */ | |
865 | address_ptr = address; | |
866 | #else | |
867 | /* See if we could read the address of a string, and that the | |
868 | address isn't null. */ | |
869 | if (!ReadProcessMemory (h, address, &address_ptr, | |
870 | sizeof (address_ptr), &done) | |
871 | || done != sizeof (address_ptr) | |
872 | || !address_ptr) | |
873 | return NULL; | |
874 | #endif | |
875 | ||
876 | /* Find the length of the string */ | |
877 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) | |
878 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
879 | continue; | |
880 | ||
881 | if (!unicode) | |
882 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
883 | else | |
884 | { | |
885 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
886 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
887 | &done); | |
888 | ||
889 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
890 | } | |
891 | ||
892 | return buf; | |
893 | } | |
894 | ||
895 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, | |
896 | DWORD, LPDWORD); | |
897 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, | |
898 | LPMODULEINFO, DWORD); | |
899 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
900 | LPSTR, DWORD); | |
901 | ||
902 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
903 | static winapi_GetModuleInformation win32_GetModuleInformation; | |
904 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
905 | ||
906 | static BOOL | |
907 | load_psapi (void) | |
908 | { | |
909 | static int psapi_loaded = 0; | |
910 | static HMODULE dll = NULL; | |
911 | ||
912 | if (!psapi_loaded) | |
913 | { | |
914 | psapi_loaded = 1; | |
915 | dll = LoadLibrary (TEXT("psapi.dll")); | |
916 | if (!dll) | |
917 | return FALSE; | |
918 | win32_EnumProcessModules = | |
919 | GETPROCADDRESS (dll, EnumProcessModules); | |
920 | win32_GetModuleInformation = | |
921 | GETPROCADDRESS (dll, GetModuleInformation); | |
922 | win32_GetModuleFileNameExA = | |
923 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
924 | } | |
925 | ||
926 | return (win32_EnumProcessModules != NULL | |
927 | && win32_GetModuleInformation != NULL | |
928 | && win32_GetModuleFileNameExA != NULL); | |
929 | } | |
930 | ||
931 | static int | |
932 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
933 | { | |
934 | DWORD len; | |
935 | MODULEINFO mi; | |
936 | size_t i; | |
937 | HMODULE dh_buf[1]; | |
938 | HMODULE *DllHandle = dh_buf; | |
939 | DWORD cbNeeded; | |
940 | BOOL ok; | |
941 | ||
942 | if (!load_psapi ()) | |
943 | goto failed; | |
944 | ||
945 | cbNeeded = 0; | |
946 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
947 | DllHandle, | |
948 | sizeof (HMODULE), | |
949 | &cbNeeded); | |
950 | ||
951 | if (!ok || !cbNeeded) | |
952 | goto failed; | |
953 | ||
954 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
955 | if (!DllHandle) | |
956 | goto failed; | |
957 | ||
958 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
959 | DllHandle, | |
960 | cbNeeded, | |
961 | &cbNeeded); | |
962 | if (!ok) | |
963 | goto failed; | |
964 | ||
965 | for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) | |
966 | { | |
967 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
968 | DllHandle[i], | |
969 | &mi, | |
970 | sizeof (mi))) | |
971 | { | |
972 | DWORD err = GetLastError (); | |
973 | error ("Can't get module info: (error %d): %s\n", | |
974 | (int) err, strwinerror (err)); | |
975 | } | |
976 | ||
977 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
978 | { | |
979 | len = (*win32_GetModuleFileNameExA) (current_process_handle, | |
980 | DllHandle[i], | |
981 | dll_name_ret, | |
982 | MAX_PATH); | |
983 | if (len == 0) | |
984 | { | |
985 | DWORD err = GetLastError (); | |
986 | error ("Error getting dll name: (error %d): %s\n", | |
987 | (int) err, strwinerror (err)); | |
988 | } | |
989 | return 1; | |
990 | } | |
991 | } | |
992 | ||
993 | failed: | |
994 | dll_name_ret[0] = '\0'; | |
995 | return 0; | |
996 | } | |
997 | ||
998 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); | |
999 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
1000 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
1001 | ||
1002 | static winapi_CreateToolhelp32Snapshot win32_CreateToolhelp32Snapshot; | |
1003 | static winapi_Module32First win32_Module32First; | |
1004 | static winapi_Module32Next win32_Module32Next; | |
6b3d9b83 PA |
1005 | #ifdef _WIN32_WCE |
1006 | typedef BOOL (WINAPI *winapi_CloseToolhelp32Snapshot) (HANDLE); | |
1007 | static winapi_CloseToolhelp32Snapshot win32_CloseToolhelp32Snapshot; | |
1008 | #endif | |
255e7678 DJ |
1009 | |
1010 | static BOOL | |
1011 | load_toolhelp (void) | |
1012 | { | |
1013 | static int toolhelp_loaded = 0; | |
1014 | static HMODULE dll = NULL; | |
1015 | ||
1016 | if (!toolhelp_loaded) | |
1017 | { | |
1018 | toolhelp_loaded = 1; | |
1019 | #ifndef _WIN32_WCE | |
1020 | dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1021 | #else | |
6b3d9b83 | 1022 | dll = LoadLibrary (L"TOOLHELP.DLL"); |
255e7678 DJ |
1023 | #endif |
1024 | if (!dll) | |
1025 | return FALSE; | |
1026 | ||
1027 | win32_CreateToolhelp32Snapshot = | |
1028 | GETPROCADDRESS (dll, CreateToolhelp32Snapshot); | |
1029 | win32_Module32First = GETPROCADDRESS (dll, Module32First); | |
1030 | win32_Module32Next = GETPROCADDRESS (dll, Module32Next); | |
6b3d9b83 PA |
1031 | #ifdef _WIN32_WCE |
1032 | win32_CloseToolhelp32Snapshot = | |
1033 | GETPROCADDRESS (dll, CloseToolhelp32Snapshot); | |
1034 | #endif | |
255e7678 DJ |
1035 | } |
1036 | ||
1037 | return (win32_CreateToolhelp32Snapshot != NULL | |
1038 | && win32_Module32First != NULL | |
6b3d9b83 PA |
1039 | && win32_Module32Next != NULL |
1040 | #ifdef _WIN32_WCE | |
1041 | && win32_CloseToolhelp32Snapshot != NULL | |
1042 | #endif | |
1043 | ); | |
255e7678 DJ |
1044 | } |
1045 | ||
1046 | static int | |
1047 | toolhelp_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
1048 | { | |
1049 | HANDLE snapshot_module; | |
1050 | MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) }; | |
6b3d9b83 | 1051 | int found = 0; |
255e7678 DJ |
1052 | |
1053 | if (!load_toolhelp ()) | |
1054 | return 0; | |
1055 | ||
1056 | snapshot_module = win32_CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, | |
1057 | current_event.dwProcessId); | |
1058 | if (snapshot_module == INVALID_HANDLE_VALUE) | |
1059 | return 0; | |
1060 | ||
1061 | /* Ignore the first module, which is the exe. */ | |
6b3d9b83 PA |
1062 | if (win32_Module32First (snapshot_module, &modEntry)) |
1063 | while (win32_Module32Next (snapshot_module, &modEntry)) | |
1064 | if ((DWORD) modEntry.modBaseAddr == BaseAddress) | |
1065 | { | |
255e7678 | 1066 | #ifdef UNICODE |
6b3d9b83 | 1067 | wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1); |
255e7678 | 1068 | #else |
6b3d9b83 | 1069 | strcpy (dll_name_ret, modEntry.szExePath); |
255e7678 | 1070 | #endif |
6b3d9b83 PA |
1071 | found = 1; |
1072 | break; | |
1073 | } | |
255e7678 | 1074 | |
6b3d9b83 PA |
1075 | #ifdef _WIN32_WCE |
1076 | win32_CloseToolhelp32Snapshot (snapshot_module); | |
1077 | #else | |
255e7678 | 1078 | CloseHandle (snapshot_module); |
6b3d9b83 PA |
1079 | #endif |
1080 | return found; | |
255e7678 DJ |
1081 | } |
1082 | ||
1083 | static void | |
1084 | handle_load_dll (void) | |
1085 | { | |
1086 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
1087 | char dll_buf[MAX_PATH + 1]; | |
1088 | char *dll_name = NULL; | |
1089 | DWORD load_addr; | |
1090 | ||
1091 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; | |
1092 | ||
34d86ddd PA |
1093 | /* Windows does not report the image name of the dlls in the debug |
1094 | event on attaches. We resort to iterating over the list of | |
1095 | loaded dlls looking for a match by image base. */ | |
1096 | if (!psapi_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf)) | |
1097 | { | |
1098 | if (!server_waiting) | |
1099 | /* On some versions of Windows and Windows CE, we can't create | |
1100 | toolhelp snapshots while the inferior is stopped in a | |
1101 | LOAD_DLL_DEBUG_EVENT due to a dll load, but we can while | |
1102 | Windows is reporting the already loaded dlls. */ | |
1103 | toolhelp_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf); | |
1104 | } | |
255e7678 DJ |
1105 | |
1106 | dll_name = dll_buf; | |
1107 | ||
1108 | if (*dll_name == '\0') | |
1109 | dll_name = get_image_name (current_process_handle, | |
1110 | event->lpImageName, event->fUnicode); | |
1111 | if (!dll_name) | |
1112 | return; | |
1113 | ||
1114 | /* The symbols in a dll are offset by 0x1000, which is the | |
1115 | the offset from 0 of the first byte in an image - because | |
1116 | of the file header and the section alignment. */ | |
1117 | ||
1118 | load_addr = (DWORD) event->lpBaseOfDll + 0x1000; | |
1119 | win32_add_one_solib (dll_name, load_addr); | |
1120 | } | |
1121 | ||
1122 | static void | |
1123 | handle_unload_dll (void) | |
1124 | { | |
1125 | CORE_ADDR load_addr = | |
1126 | (CORE_ADDR) (DWORD) current_event.u.UnloadDll.lpBaseOfDll; | |
1127 | load_addr += 0x1000; | |
1128 | unloaded_dll (NULL, load_addr); | |
1129 | } | |
1130 | ||
34b34921 | 1131 | static void |
b80864fb DJ |
1132 | handle_exception (struct target_waitstatus *ourstatus) |
1133 | { | |
b80864fb DJ |
1134 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
1135 | ||
1136 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1137 | ||
b80864fb DJ |
1138 | switch (code) |
1139 | { | |
1140 | case EXCEPTION_ACCESS_VIOLATION: | |
1141 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
1142 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
1143 | break; | |
1144 | case STATUS_STACK_OVERFLOW: | |
1145 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
1146 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
1147 | break; | |
1148 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1149 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
1150 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1151 | break; | |
1152 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1153 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
1154 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1155 | break; | |
1156 | case STATUS_FLOAT_INEXACT_RESULT: | |
1157 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
1158 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1159 | break; | |
1160 | case STATUS_FLOAT_INVALID_OPERATION: | |
1161 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
1162 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1163 | break; | |
1164 | case STATUS_FLOAT_OVERFLOW: | |
1165 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
1166 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1167 | break; | |
1168 | case STATUS_FLOAT_STACK_CHECK: | |
1169 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
1170 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1171 | break; | |
1172 | case STATUS_FLOAT_UNDERFLOW: | |
1173 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
1174 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1175 | break; | |
1176 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
1177 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
1178 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1179 | break; | |
1180 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
1181 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
1182 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1183 | break; | |
1184 | case STATUS_INTEGER_OVERFLOW: | |
1185 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
1186 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1187 | break; | |
1188 | case EXCEPTION_BREAKPOINT: | |
1189 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
1190 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
ed50f18f PA |
1191 | #ifdef _WIN32_WCE |
1192 | /* Remove the initial breakpoint. */ | |
1193 | check_breakpoints ((CORE_ADDR) (long) current_event | |
1194 | .u.Exception.ExceptionRecord.ExceptionAddress); | |
1195 | #endif | |
b80864fb DJ |
1196 | break; |
1197 | case DBG_CONTROL_C: | |
1198 | OUTMSG2 (("DBG_CONTROL_C")); | |
1199 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
1200 | break; | |
1201 | case DBG_CONTROL_BREAK: | |
1202 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
1203 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
1204 | break; | |
1205 | case EXCEPTION_SINGLE_STEP: | |
1206 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
1207 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
1208 | break; | |
1209 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
1210 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
1211 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1212 | break; | |
1213 | case EXCEPTION_PRIV_INSTRUCTION: | |
1214 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
1215 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1216 | break; | |
1217 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1218 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
1219 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1220 | break; | |
1221 | default: | |
1222 | if (current_event.u.Exception.dwFirstChance) | |
34b34921 PA |
1223 | { |
1224 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1225 | return; | |
1226 | } | |
b80864fb DJ |
1227 | OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx", |
1228 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1229 | (DWORD) current_event.u.Exception.ExceptionRecord. | |
1230 | ExceptionAddress)); | |
1231 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
1232 | break; | |
1233 | } | |
1234 | OUTMSG2 (("\n")); | |
1235 | last_sig = ourstatus->value.sig; | |
b80864fb DJ |
1236 | } |
1237 | ||
34b34921 PA |
1238 | /* Get the next event from the child. */ |
1239 | static void | |
b80864fb DJ |
1240 | get_child_debug_event (struct target_waitstatus *ourstatus) |
1241 | { | |
1242 | BOOL debug_event; | |
b80864fb DJ |
1243 | |
1244 | last_sig = TARGET_SIGNAL_0; | |
1245 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1246 | ||
7390519e PA |
1247 | /* Keep the wait time low enough for confortable remote interruption, |
1248 | but high enough so gdbserver doesn't become a bottleneck. */ | |
1249 | if (!(debug_event = WaitForDebugEvent (¤t_event, 250))) | |
34b34921 | 1250 | return; |
b80864fb DJ |
1251 | |
1252 | current_inferior = | |
1253 | (struct thread_info *) find_inferior_id (&all_threads, | |
1254 | current_event.dwThreadId); | |
1255 | ||
34b34921 | 1256 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1257 | { |
1258 | case CREATE_THREAD_DEBUG_EVENT: | |
1259 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
1260 | "for pid=%d tid=%x)\n", | |
1261 | (unsigned) current_event.dwProcessId, | |
1262 | (unsigned) current_event.dwThreadId)); | |
1263 | ||
1264 | /* Record the existence of this thread. */ | |
34b34921 | 1265 | child_add_thread (current_event.dwThreadId, |
b80864fb | 1266 | current_event.u.CreateThread.hThread); |
b80864fb DJ |
1267 | break; |
1268 | ||
1269 | case EXIT_THREAD_DEBUG_EVENT: | |
1270 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
1271 | "for pid=%d tid=%x\n", | |
1272 | (unsigned) current_event.dwProcessId, | |
1273 | (unsigned) current_event.dwThreadId)); | |
1274 | child_delete_thread (current_event.dwThreadId); | |
b80864fb DJ |
1275 | break; |
1276 | ||
1277 | case CREATE_PROCESS_DEBUG_EVENT: | |
1278 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
1279 | "for pid=%d tid=%x\n", | |
1280 | (unsigned) current_event.dwProcessId, | |
1281 | (unsigned) current_event.dwThreadId)); | |
1282 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1283 | ||
1284 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1285 | main_thread_id = current_event.dwThreadId; | |
1286 | ||
1287 | ourstatus->kind = TARGET_WAITKIND_EXECD; | |
1288 | ourstatus->value.execd_pathname = "Main executable"; | |
1289 | ||
1290 | /* Add the main thread. */ | |
34b34921 PA |
1291 | child_add_thread (main_thread_id, |
1292 | current_event.u.CreateProcessInfo.hThread); | |
b80864fb | 1293 | |
34b34921 | 1294 | ourstatus->value.related_pid = current_event.dwThreadId; |
ed50f18f PA |
1295 | #ifdef _WIN32_WCE |
1296 | /* Windows CE doesn't set the initial breakpoint automatically | |
1297 | like the desktop versions of Windows do. We add it explicitly | |
1298 | here. It will be removed as soon as it is hit. */ | |
1299 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1300 | .CreateProcessInfo.lpStartAddress, | |
1301 | delete_breakpoint_at); | |
1302 | #endif | |
b80864fb DJ |
1303 | break; |
1304 | ||
1305 | case EXIT_PROCESS_DEBUG_EVENT: | |
1306 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
1307 | "for pid=%d tid=%x\n", | |
1308 | (unsigned) current_event.dwProcessId, | |
1309 | (unsigned) current_event.dwThreadId)); | |
1310 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1311 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1312 | CloseHandle (current_process_handle); | |
9d606399 | 1313 | current_process_handle = NULL; |
b80864fb DJ |
1314 | break; |
1315 | ||
1316 | case LOAD_DLL_DEBUG_EVENT: | |
1317 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
1318 | "for pid=%d tid=%x\n", | |
1319 | (unsigned) current_event.dwProcessId, | |
1320 | (unsigned) current_event.dwThreadId)); | |
1321 | CloseHandle (current_event.u.LoadDll.hFile); | |
255e7678 | 1322 | handle_load_dll (); |
b80864fb DJ |
1323 | |
1324 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
255e7678 | 1325 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
b80864fb DJ |
1326 | break; |
1327 | ||
1328 | case UNLOAD_DLL_DEBUG_EVENT: | |
1329 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
1330 | "for pid=%d tid=%x\n", | |
1331 | (unsigned) current_event.dwProcessId, | |
1332 | (unsigned) current_event.dwThreadId)); | |
255e7678 DJ |
1333 | handle_unload_dll (); |
1334 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
1335 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
b80864fb DJ |
1336 | break; |
1337 | ||
1338 | case EXCEPTION_DEBUG_EVENT: | |
1339 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
1340 | "for pid=%d tid=%x\n", | |
1341 | (unsigned) current_event.dwProcessId, | |
1342 | (unsigned) current_event.dwThreadId)); | |
34b34921 | 1343 | handle_exception (ourstatus); |
b80864fb DJ |
1344 | break; |
1345 | ||
1346 | case OUTPUT_DEBUG_STRING_EVENT: | |
1347 | /* A message from the kernel (or Cygwin). */ | |
1348 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
1349 | "for pid=%d tid=%x\n", | |
1350 | (unsigned) current_event.dwProcessId, | |
1351 | (unsigned) current_event.dwThreadId)); | |
bce7165d | 1352 | handle_output_debug_string (ourstatus); |
b80864fb DJ |
1353 | break; |
1354 | ||
1355 | default: | |
1356 | OUTMSG2 (("gdbserver: kernel event unknown " | |
1357 | "for pid=%d tid=%x code=%ld\n", | |
1358 | (unsigned) current_event.dwProcessId, | |
1359 | (unsigned) current_event.dwThreadId, | |
1360 | current_event.dwDebugEventCode)); | |
1361 | break; | |
1362 | } | |
1363 | ||
1364 | current_inferior = | |
1365 | (struct thread_info *) find_inferior_id (&all_threads, | |
1366 | current_event.dwThreadId); | |
b80864fb DJ |
1367 | } |
1368 | ||
1369 | /* Wait for the inferior process to change state. | |
1370 | STATUS will be filled in with a response code to send to GDB. | |
1371 | Returns the signal which caused the process to stop. */ | |
1372 | static unsigned char | |
1373 | win32_wait (char *status) | |
1374 | { | |
1375 | struct target_waitstatus our_status; | |
1376 | ||
1377 | *status = 'T'; | |
1378 | ||
1379 | while (1) | |
1380 | { | |
7390519e PA |
1381 | /* Check if GDB sent us an interrupt request. */ |
1382 | check_remote_input_interrupt_request (); | |
1383 | ||
b80864fb DJ |
1384 | get_child_debug_event (&our_status); |
1385 | ||
34b34921 | 1386 | switch (our_status.kind) |
b80864fb | 1387 | { |
34b34921 | 1388 | case TARGET_WAITKIND_EXITED: |
b80864fb DJ |
1389 | OUTMSG2 (("Child exited with retcode = %x\n", |
1390 | our_status.value.integer)); | |
1391 | ||
1392 | *status = 'W'; | |
b80864fb | 1393 | return our_status.value.integer; |
34b34921 | 1394 | case TARGET_WAITKIND_STOPPED: |
255e7678 | 1395 | case TARGET_WAITKIND_LOADED: |
f72f3e60 | 1396 | OUTMSG2 (("Child Stopped with signal = %d \n", |
ed50f18f | 1397 | our_status.value.sig)); |
b80864fb DJ |
1398 | |
1399 | *status = 'T'; | |
1400 | ||
1401 | child_fetch_inferior_registers (-1); | |
1402 | ||
255e7678 DJ |
1403 | if (our_status.kind == TARGET_WAITKIND_LOADED |
1404 | && !server_waiting) | |
1405 | { | |
1406 | /* When gdb connects, we want to be stopped at the | |
1407 | initial breakpoint, not in some dll load event. */ | |
1408 | child_continue (DBG_CONTINUE, -1); | |
1409 | break; | |
1410 | } | |
1411 | ||
b80864fb | 1412 | return our_status.value.sig; |
34b34921 PA |
1413 | default: |
1414 | OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind)); | |
1415 | /* fall-through */ | |
1416 | case TARGET_WAITKIND_SPURIOUS: | |
34b34921 PA |
1417 | case TARGET_WAITKIND_EXECD: |
1418 | /* do nothing, just continue */ | |
1419 | child_continue (DBG_CONTINUE, -1); | |
1420 | break; | |
b80864fb | 1421 | } |
b80864fb DJ |
1422 | } |
1423 | } | |
1424 | ||
1425 | /* Fetch registers from the inferior process. | |
1426 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1427 | static void | |
1428 | win32_fetch_inferior_registers (int regno) | |
1429 | { | |
1430 | child_fetch_inferior_registers (regno); | |
1431 | } | |
1432 | ||
1433 | /* Store registers to the inferior process. | |
1434 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1435 | static void | |
1436 | win32_store_inferior_registers (int regno) | |
1437 | { | |
1438 | child_store_inferior_registers (regno); | |
1439 | } | |
1440 | ||
1441 | /* Read memory from the inferior process. This should generally be | |
1442 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1443 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1444 | static int | |
1445 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1446 | { | |
ed50f18f | 1447 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1448 | } |
1449 | ||
1450 | /* Write memory to the inferior process. This should generally be | |
1451 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1452 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1453 | Returns 0 on success and errno on failure. */ | |
1454 | static int | |
1455 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1456 | int len) | |
1457 | { | |
1458 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1459 | } | |
1460 | ||
7390519e PA |
1461 | /* Send an interrupt request to the inferior process. */ |
1462 | static void | |
1463 | win32_request_interrupt (void) | |
1464 | { | |
1465 | winapi_DebugBreakProcess DebugBreakProcess; | |
1466 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1467 | ||
1468 | #ifdef _WIN32_WCE | |
1469 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1470 | #else | |
1471 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1472 | #endif | |
1473 | ||
1474 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1475 | ||
1476 | if (GenerateConsoleCtrlEvent != NULL | |
1477 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1478 | return; | |
1479 | ||
1480 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1481 | not a process group id. | |
1482 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1483 | breakpoint exception in the interior process. */ | |
1484 | ||
1485 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1486 | ||
1487 | if (DebugBreakProcess != NULL | |
1488 | && DebugBreakProcess (current_process_handle)) | |
1489 | return; | |
1490 | ||
1491 | OUTMSG (("Could not interrupt process.\n")); | |
1492 | } | |
1493 | ||
820f2bda PA |
1494 | static const char * |
1495 | win32_arch_string (void) | |
1496 | { | |
ed50f18f | 1497 | return the_low_target.arch_string; |
820f2bda PA |
1498 | } |
1499 | ||
b80864fb DJ |
1500 | static struct target_ops win32_target_ops = { |
1501 | win32_create_inferior, | |
1502 | win32_attach, | |
1503 | win32_kill, | |
1504 | win32_detach, | |
444d6139 | 1505 | win32_join, |
b80864fb DJ |
1506 | win32_thread_alive, |
1507 | win32_resume, | |
1508 | win32_wait, | |
1509 | win32_fetch_inferior_registers, | |
1510 | win32_store_inferior_registers, | |
1511 | win32_read_inferior_memory, | |
1512 | win32_write_inferior_memory, | |
820f2bda | 1513 | NULL, |
7390519e | 1514 | win32_request_interrupt, |
820f2bda PA |
1515 | NULL, |
1516 | NULL, | |
1517 | NULL, | |
1518 | NULL, | |
1519 | NULL, | |
1520 | NULL, | |
1521 | NULL, | |
1522 | win32_arch_string | |
b80864fb DJ |
1523 | }; |
1524 | ||
1525 | /* Initialize the Win32 backend. */ | |
1526 | void | |
1527 | initialize_low (void) | |
1528 | { | |
1529 | set_target_ops (&win32_target_ops); | |
ed50f18f PA |
1530 | if (the_low_target.breakpoint != NULL) |
1531 | set_breakpoint_data (the_low_target.breakpoint, | |
1532 | the_low_target.breakpoint_len); | |
b80864fb DJ |
1533 | init_registers (); |
1534 | } |