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b80864fb | 1 | /* Low level interface to Windows debugging, for gdbserver. |
28e7fd62 | 2 | Copyright (C) 2006-2013 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" | |
59a016f0 | 24 | #include "gdb/fileio.h" |
ed50f18f PA |
25 | #include "mem-break.h" |
26 | #include "win32-low.h" | |
623b6bdf | 27 | #include "gdbthread.h" |
799cdc37 | 28 | #include "dll.h" |
533b0600 | 29 | #include "hostio.h" |
b80864fb | 30 | |
a959a88d | 31 | #include <stdint.h> |
b80864fb | 32 | #include <windows.h> |
ed50f18f | 33 | #include <winnt.h> |
b80864fb | 34 | #include <imagehlp.h> |
255e7678 | 35 | #include <tlhelp32.h> |
b80864fb | 36 | #include <psapi.h> |
b80864fb DJ |
37 | #include <process.h> |
38 | ||
39 | #ifndef USE_WIN32API | |
40 | #include <sys/cygwin.h> | |
41 | #endif | |
42 | ||
10357975 PA |
43 | #define OUTMSG(X) do { printf X; fflush (stderr); } while (0) |
44 | ||
45 | #define OUTMSG2(X) \ | |
46 | do \ | |
47 | { \ | |
48 | if (debug_threads) \ | |
49 | { \ | |
50 | printf X; \ | |
51 | fflush (stderr); \ | |
52 | } \ | |
53 | } while (0) | |
ed50f18f PA |
54 | |
55 | #ifndef _T | |
56 | #define _T(x) TEXT (x) | |
57 | #endif | |
58 | ||
59 | #ifndef COUNTOF | |
60 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
61 | #endif |
62 | ||
bf914831 PA |
63 | #ifdef _WIN32_WCE |
64 | # define GETPROCADDRESS(DLL, PROC) \ | |
65 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) | |
66 | #else | |
67 | # define GETPROCADDRESS(DLL, PROC) \ | |
68 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) | |
69 | #endif | |
70 | ||
b80864fb DJ |
71 | int using_threads = 1; |
72 | ||
73 | /* Globals. */ | |
d97903b2 | 74 | static int attaching = 0; |
b80864fb DJ |
75 | static HANDLE current_process_handle = NULL; |
76 | static DWORD current_process_id = 0; | |
5ac588cf | 77 | static DWORD main_thread_id = 0; |
a493e3e2 | 78 | static enum gdb_signal last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
79 | |
80 | /* The current debug event from WaitForDebugEvent. */ | |
81 | static DEBUG_EVENT current_event; | |
82 | ||
4210d83e PA |
83 | /* A status that hasn't been reported to the core yet, and so |
84 | win32_wait should return it next, instead of fetching the next | |
85 | debug event off the win32 API. */ | |
86 | static struct target_waitstatus cached_status; | |
87 | ||
4d5d1aaa PA |
88 | /* Non zero if an interrupt request is to be satisfied by suspending |
89 | all threads. */ | |
90 | static int soft_interrupt_requested = 0; | |
91 | ||
92 | /* Non zero if the inferior is stopped in a simulated breakpoint done | |
93 | by suspending all the threads. */ | |
94 | static int faked_breakpoint = 0; | |
95 | ||
3aee8918 PA |
96 | const struct target_desc *win32_tdesc; |
97 | ||
ed50f18f | 98 | #define NUM_REGS (the_low_target.num_regs) |
b80864fb | 99 | |
7a9a7487 MG |
100 | typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
101 | typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
102 | typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE); | |
103 | typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); | |
b80864fb | 104 | |
4210d83e PA |
105 | static ptid_t win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, |
106 | int options); | |
2bd7c093 | 107 | static void win32_resume (struct thread_resume *resume_info, size_t n); |
379a5e2d JB |
108 | #ifndef _WIN32_WCE |
109 | static void win32_ensure_ntdll_loaded (void); | |
110 | #endif | |
34b34921 | 111 | |
b80864fb DJ |
112 | /* Get the thread ID from the current selected inferior (the current |
113 | thread). */ | |
95954743 PA |
114 | static ptid_t |
115 | current_inferior_ptid (void) | |
b80864fb | 116 | { |
95954743 PA |
117 | return ((struct inferior_list_entry*) current_inferior)->id; |
118 | } | |
119 | ||
120 | /* The current debug event from WaitForDebugEvent. */ | |
121 | static ptid_t | |
122 | debug_event_ptid (DEBUG_EVENT *event) | |
123 | { | |
124 | return ptid_build (event->dwProcessId, event->dwThreadId, 0); | |
b80864fb DJ |
125 | } |
126 | ||
9c6c8194 PA |
127 | /* Get the thread context of the thread associated with TH. */ |
128 | ||
129 | static void | |
130 | win32_get_thread_context (win32_thread_info *th) | |
131 | { | |
132 | memset (&th->context, 0, sizeof (CONTEXT)); | |
133 | (*the_low_target.get_thread_context) (th, ¤t_event); | |
134 | #ifdef _WIN32_WCE | |
135 | memcpy (&th->base_context, &th->context, sizeof (CONTEXT)); | |
136 | #endif | |
137 | } | |
138 | ||
139 | /* Set the thread context of the thread associated with TH. */ | |
140 | ||
141 | static void | |
142 | win32_set_thread_context (win32_thread_info *th) | |
143 | { | |
144 | #ifdef _WIN32_WCE | |
145 | /* Calling SuspendThread on a thread that is running kernel code | |
146 | will report that the suspending was successful, but in fact, that | |
147 | will often not be true. In those cases, the context returned by | |
148 | GetThreadContext will not be correct by the time the thread | |
149 | stops, hence we can't set that context back into the thread when | |
150 | resuming - it will most likelly crash the inferior. | |
151 | Unfortunately, there is no way to know when the thread will | |
152 | really stop. To work around it, we'll only write the context | |
153 | back to the thread when either the user or GDB explicitly change | |
154 | it between stopping and resuming. */ | |
155 | if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0) | |
156 | #endif | |
157 | (*the_low_target.set_thread_context) (th, ¤t_event); | |
158 | } | |
159 | ||
b80864fb DJ |
160 | /* Find a thread record given a thread id. If GET_CONTEXT is set then |
161 | also retrieve the context for this thread. */ | |
41093d81 | 162 | static win32_thread_info * |
95954743 | 163 | thread_rec (ptid_t ptid, int get_context) |
b80864fb DJ |
164 | { |
165 | struct thread_info *thread; | |
41093d81 | 166 | win32_thread_info *th; |
b80864fb | 167 | |
95954743 | 168 | thread = (struct thread_info *) find_inferior_id (&all_threads, ptid); |
b80864fb DJ |
169 | if (thread == NULL) |
170 | return NULL; | |
171 | ||
172 | th = inferior_target_data (thread); | |
c436e841 | 173 | if (get_context && th->context.ContextFlags == 0) |
b80864fb | 174 | { |
c436e841 PA |
175 | if (!th->suspended) |
176 | { | |
177 | if (SuspendThread (th->h) == (DWORD) -1) | |
178 | { | |
179 | DWORD err = GetLastError (); | |
180 | OUTMSG (("warning: SuspendThread failed in thread_rec, " | |
181 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
182 | } | |
183 | else | |
184 | th->suspended = 1; | |
185 | } | |
b80864fb | 186 | |
9c6c8194 | 187 | win32_get_thread_context (th); |
b80864fb DJ |
188 | } |
189 | ||
190 | return th; | |
191 | } | |
192 | ||
193 | /* Add a thread to the thread list. */ | |
41093d81 | 194 | static win32_thread_info * |
711e434b | 195 | child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb) |
b80864fb | 196 | { |
41093d81 | 197 | win32_thread_info *th; |
95954743 | 198 | ptid_t ptid = ptid_build (pid, tid, 0); |
b80864fb | 199 | |
95954743 | 200 | if ((th = thread_rec (ptid, FALSE))) |
b80864fb DJ |
201 | return th; |
202 | ||
bca929d3 | 203 | th = xcalloc (1, sizeof (*th)); |
b80864fb DJ |
204 | th->tid = tid; |
205 | th->h = h; | |
711e434b | 206 | th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb; |
b80864fb | 207 | |
95954743 | 208 | add_thread (ptid, th); |
b80864fb | 209 | |
34b34921 PA |
210 | if (the_low_target.thread_added != NULL) |
211 | (*the_low_target.thread_added) (th); | |
b80864fb DJ |
212 | |
213 | return th; | |
214 | } | |
215 | ||
216 | /* Delete a thread from the list of threads. */ | |
217 | static void | |
218 | delete_thread_info (struct inferior_list_entry *thread) | |
219 | { | |
41093d81 | 220 | win32_thread_info *th = inferior_target_data ((struct thread_info *) thread); |
b80864fb DJ |
221 | |
222 | remove_thread ((struct thread_info *) thread); | |
223 | CloseHandle (th->h); | |
224 | free (th); | |
225 | } | |
226 | ||
227 | /* Delete a thread from the list of threads. */ | |
228 | static void | |
95954743 | 229 | child_delete_thread (DWORD pid, DWORD tid) |
b80864fb DJ |
230 | { |
231 | struct inferior_list_entry *thread; | |
95954743 | 232 | ptid_t ptid; |
b80864fb DJ |
233 | |
234 | /* If the last thread is exiting, just return. */ | |
235 | if (all_threads.head == all_threads.tail) | |
236 | return; | |
237 | ||
95954743 PA |
238 | ptid = ptid_build (pid, tid, 0); |
239 | thread = find_inferior_id (&all_threads, ptid); | |
b80864fb DJ |
240 | if (thread == NULL) |
241 | return; | |
242 | ||
243 | delete_thread_info (thread); | |
244 | } | |
245 | ||
aa5ca48f DE |
246 | /* These watchpoint related wrapper functions simply pass on the function call |
247 | if the low target has registered a corresponding function. */ | |
248 | ||
249 | static int | |
250 | win32_insert_point (char type, CORE_ADDR addr, int len) | |
251 | { | |
252 | if (the_low_target.insert_point != NULL) | |
253 | return the_low_target.insert_point (type, addr, len); | |
254 | else | |
255 | /* Unsupported (see target.h). */ | |
256 | return 1; | |
257 | } | |
258 | ||
259 | static int | |
260 | win32_remove_point (char type, CORE_ADDR addr, int len) | |
261 | { | |
262 | if (the_low_target.remove_point != NULL) | |
263 | return the_low_target.remove_point (type, addr, len); | |
264 | else | |
265 | /* Unsupported (see target.h). */ | |
266 | return 1; | |
267 | } | |
268 | ||
269 | static int | |
270 | win32_stopped_by_watchpoint (void) | |
271 | { | |
272 | if (the_low_target.stopped_by_watchpoint != NULL) | |
273 | return the_low_target.stopped_by_watchpoint (); | |
274 | else | |
275 | return 0; | |
276 | } | |
277 | ||
278 | static CORE_ADDR | |
279 | win32_stopped_data_address (void) | |
280 | { | |
281 | if (the_low_target.stopped_data_address != NULL) | |
282 | return the_low_target.stopped_data_address (); | |
283 | else | |
284 | return 0; | |
285 | } | |
286 | ||
287 | ||
b80864fb DJ |
288 | /* Transfer memory from/to the debugged process. */ |
289 | static int | |
290 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
291 | int write, struct target_ops *target) | |
292 | { | |
cee83bcb PM |
293 | BOOL success; |
294 | SIZE_T done = 0; | |
295 | DWORD lasterror = 0; | |
e8f0053d | 296 | uintptr_t addr = (uintptr_t) memaddr; |
b80864fb DJ |
297 | |
298 | if (write) | |
299 | { | |
cee83bcb PM |
300 | success = WriteProcessMemory (current_process_handle, (LPVOID) addr, |
301 | (LPCVOID) our, len, &done); | |
302 | if (!success) | |
303 | lasterror = GetLastError (); | |
b80864fb DJ |
304 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); |
305 | } | |
306 | else | |
307 | { | |
cee83bcb PM |
308 | success = ReadProcessMemory (current_process_handle, (LPCVOID) addr, |
309 | (LPVOID) our, len, &done); | |
310 | if (!success) | |
311 | lasterror = GetLastError (); | |
b80864fb | 312 | } |
cee83bcb PM |
313 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
314 | return done; | |
315 | else | |
316 | return success ? done : -1; | |
b80864fb DJ |
317 | } |
318 | ||
ed50f18f | 319 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
320 | state. */ |
321 | static void | |
322 | child_init_thread_list (void) | |
323 | { | |
324 | for_each_inferior (&all_threads, delete_thread_info); | |
325 | } | |
326 | ||
327 | static void | |
95954743 | 328 | do_initial_child_stuff (HANDLE proch, DWORD pid, int attached) |
b80864fb | 329 | { |
3aee8918 PA |
330 | struct process_info *proc; |
331 | ||
a493e3e2 | 332 | last_sig = GDB_SIGNAL_0; |
b80864fb | 333 | |
5ac588cf PA |
334 | current_process_handle = proch; |
335 | current_process_id = pid; | |
336 | main_thread_id = 0; | |
337 | ||
338 | soft_interrupt_requested = 0; | |
339 | faked_breakpoint = 0; | |
340 | ||
b80864fb DJ |
341 | memset (¤t_event, 0, sizeof (current_event)); |
342 | ||
3aee8918 PA |
343 | proc = add_process (pid, attached); |
344 | proc->tdesc = win32_tdesc; | |
b80864fb | 345 | child_init_thread_list (); |
ed50f18f PA |
346 | |
347 | if (the_low_target.initial_stuff != NULL) | |
348 | (*the_low_target.initial_stuff) (); | |
4210d83e PA |
349 | |
350 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
351 | ||
352 | /* Flush all currently pending debug events (thread and dll list) up | |
353 | to the initial breakpoint. */ | |
354 | while (1) | |
355 | { | |
356 | struct target_waitstatus status; | |
357 | ||
358 | win32_wait (minus_one_ptid, &status, 0); | |
359 | ||
360 | /* Note win32_wait doesn't return thread events. */ | |
361 | if (status.kind != TARGET_WAITKIND_LOADED) | |
362 | { | |
363 | cached_status = status; | |
364 | break; | |
365 | } | |
366 | ||
367 | { | |
368 | struct thread_resume resume; | |
369 | ||
370 | resume.thread = minus_one_ptid; | |
371 | resume.kind = resume_continue; | |
372 | resume.sig = 0; | |
373 | ||
374 | win32_resume (&resume, 1); | |
375 | } | |
376 | } | |
379a5e2d JB |
377 | |
378 | #ifndef _WIN32_WCE | |
379 | win32_ensure_ntdll_loaded (); | |
380 | #endif | |
b80864fb DJ |
381 | } |
382 | ||
383 | /* Resume all artificially suspended threads if we are continuing | |
384 | execution. */ | |
385 | static int | |
386 | continue_one_thread (struct inferior_list_entry *this_thread, void *id_ptr) | |
387 | { | |
388 | struct thread_info *thread = (struct thread_info *) this_thread; | |
389 | int thread_id = * (int *) id_ptr; | |
41093d81 | 390 | win32_thread_info *th = inferior_target_data (thread); |
b80864fb DJ |
391 | |
392 | if ((thread_id == -1 || thread_id == th->tid) | |
c436e841 | 393 | && th->suspended) |
b80864fb | 394 | { |
34b34921 | 395 | if (th->context.ContextFlags) |
b80864fb | 396 | { |
9c6c8194 | 397 | win32_set_thread_context (th); |
b80864fb DJ |
398 | th->context.ContextFlags = 0; |
399 | } | |
34b34921 | 400 | |
c436e841 PA |
401 | if (ResumeThread (th->h) == (DWORD) -1) |
402 | { | |
403 | DWORD err = GetLastError (); | |
404 | OUTMSG (("warning: ResumeThread failed in continue_one_thread, " | |
405 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
406 | } | |
407 | th->suspended = 0; | |
b80864fb DJ |
408 | } |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | static BOOL | |
414 | child_continue (DWORD continue_status, int thread_id) | |
415 | { | |
4d5d1aaa PA |
416 | /* The inferior will only continue after the ContinueDebugEvent |
417 | call. */ | |
418 | find_inferior (&all_threads, continue_one_thread, &thread_id); | |
419 | faked_breakpoint = 0; | |
b80864fb | 420 | |
4d5d1aaa PA |
421 | if (!ContinueDebugEvent (current_event.dwProcessId, |
422 | current_event.dwThreadId, | |
423 | continue_status)) | |
424 | return FALSE; | |
b80864fb | 425 | |
4d5d1aaa | 426 | return TRUE; |
b80864fb DJ |
427 | } |
428 | ||
b80864fb DJ |
429 | /* Fetch register(s) from the current thread context. */ |
430 | static void | |
442ea881 | 431 | child_fetch_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
432 | { |
433 | int regno; | |
95954743 | 434 | win32_thread_info *th = thread_rec (current_inferior_ptid (), TRUE); |
4463ce24 | 435 | if (r == -1 || r > NUM_REGS) |
442ea881 | 436 | child_fetch_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
437 | else |
438 | for (regno = 0; regno < r; regno++) | |
442ea881 | 439 | (*the_low_target.fetch_inferior_register) (regcache, th, regno); |
b80864fb DJ |
440 | } |
441 | ||
442 | /* Store a new register value into the current thread context. We don't | |
443 | change the program's context until later, when we resume it. */ | |
444 | static void | |
442ea881 | 445 | child_store_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
446 | { |
447 | int regno; | |
95954743 | 448 | win32_thread_info *th = thread_rec (current_inferior_ptid (), TRUE); |
b80864fb | 449 | if (r == -1 || r == 0 || r > NUM_REGS) |
442ea881 | 450 | child_store_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
451 | else |
452 | for (regno = 0; regno < r; regno++) | |
442ea881 | 453 | (*the_low_target.store_inferior_register) (regcache, th, regno); |
b80864fb DJ |
454 | } |
455 | ||
ed50f18f PA |
456 | /* Map the Windows error number in ERROR to a locale-dependent error |
457 | message string and return a pointer to it. Typically, the values | |
458 | for ERROR come from GetLastError. | |
459 | ||
460 | The string pointed to shall not be modified by the application, | |
461 | but may be overwritten by a subsequent call to strwinerror | |
462 | ||
463 | The strwinerror function does not change the current setting | |
464 | of GetLastError. */ | |
465 | ||
466 | char * | |
467 | strwinerror (DWORD error) | |
468 | { | |
469 | static char buf[1024]; | |
470 | TCHAR *msgbuf; | |
471 | DWORD lasterr = GetLastError (); | |
472 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
473 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
474 | NULL, | |
475 | error, | |
476 | 0, /* Default language */ | |
477 | (LPVOID)&msgbuf, | |
478 | 0, | |
479 | NULL); | |
480 | if (chars != 0) | |
481 | { | |
482 | /* If there is an \r\n appended, zap it. */ | |
483 | if (chars >= 2 | |
484 | && msgbuf[chars - 2] == '\r' | |
485 | && msgbuf[chars - 1] == '\n') | |
486 | { | |
487 | chars -= 2; | |
488 | msgbuf[chars] = 0; | |
489 | } | |
490 | ||
491 | if (chars > ((COUNTOF (buf)) - 1)) | |
492 | { | |
493 | chars = COUNTOF (buf) - 1; | |
494 | msgbuf [chars] = 0; | |
495 | } | |
496 | ||
497 | #ifdef UNICODE | |
498 | wcstombs (buf, msgbuf, chars + 1); | |
499 | #else | |
500 | strncpy (buf, msgbuf, chars + 1); | |
501 | #endif | |
502 | LocalFree (msgbuf); | |
503 | } | |
504 | else | |
dfe07582 | 505 | sprintf (buf, "unknown win32 error (%u)", (unsigned) error); |
ed50f18f PA |
506 | |
507 | SetLastError (lasterr); | |
508 | return buf; | |
509 | } | |
510 | ||
aec18585 PA |
511 | static BOOL |
512 | create_process (const char *program, char *args, | |
513 | DWORD flags, PROCESS_INFORMATION *pi) | |
514 | { | |
515 | BOOL ret; | |
516 | ||
517 | #ifdef _WIN32_WCE | |
518 | wchar_t *p, *wprogram, *wargs; | |
519 | size_t argslen; | |
520 | ||
521 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
522 | mbstowcs (wprogram, program, strlen (program) + 1); | |
523 | ||
524 | for (p = wprogram; *p; ++p) | |
525 | if (L'/' == *p) | |
526 | *p = L'\\'; | |
527 | ||
528 | argslen = strlen (args); | |
529 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); | |
530 | mbstowcs (wargs, args, argslen + 1); | |
531 | ||
532 | ret = CreateProcessW (wprogram, /* image name */ | |
1b3f6016 PA |
533 | wargs, /* command line */ |
534 | NULL, /* security, not supported */ | |
535 | NULL, /* thread, not supported */ | |
536 | FALSE, /* inherit handles, not supported */ | |
537 | flags, /* start flags */ | |
538 | NULL, /* environment, not supported */ | |
539 | NULL, /* current directory, not supported */ | |
540 | NULL, /* start info, not supported */ | |
541 | pi); /* proc info */ | |
aec18585 PA |
542 | #else |
543 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; | |
544 | ||
545 | ret = CreateProcessA (program, /* image name */ | |
546 | args, /* command line */ | |
547 | NULL, /* security */ | |
548 | NULL, /* thread */ | |
549 | TRUE, /* inherit handles */ | |
550 | flags, /* start flags */ | |
551 | NULL, /* environment */ | |
552 | NULL, /* current directory */ | |
553 | &si, /* start info */ | |
554 | pi); /* proc info */ | |
555 | #endif | |
556 | ||
557 | return ret; | |
558 | } | |
559 | ||
b80864fb DJ |
560 | /* Start a new process. |
561 | PROGRAM is a path to the program to execute. | |
562 | ARGS is a standard NULL-terminated array of arguments, | |
563 | to be passed to the inferior as ``argv''. | |
564 | Returns the new PID on success, -1 on failure. Registers the new | |
565 | process with the process list. */ | |
566 | static int | |
567 | win32_create_inferior (char *program, char **program_args) | |
568 | { | |
569 | #ifndef USE_WIN32API | |
d8d2a3ee | 570 | char real_path[PATH_MAX]; |
b80864fb DJ |
571 | char *orig_path, *new_path, *path_ptr; |
572 | #endif | |
b80864fb DJ |
573 | BOOL ret; |
574 | DWORD flags; | |
575 | char *args; | |
576 | int argslen; | |
577 | int argc; | |
ed50f18f | 578 | PROCESS_INFORMATION pi; |
aec18585 | 579 | DWORD err; |
b80864fb | 580 | |
d97903b2 PA |
581 | /* win32_wait needs to know we're not attaching. */ |
582 | attaching = 0; | |
583 | ||
b80864fb DJ |
584 | if (!program) |
585 | error ("No executable specified, specify executable to debug.\n"); | |
586 | ||
b80864fb DJ |
587 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
588 | ||
589 | #ifndef USE_WIN32API | |
590 | orig_path = NULL; | |
591 | path_ptr = getenv ("PATH"); | |
592 | if (path_ptr) | |
593 | { | |
81239425 | 594 | int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0); |
b80864fb | 595 | orig_path = alloca (strlen (path_ptr) + 1); |
81239425 | 596 | new_path = alloca (size); |
b80864fb | 597 | strcpy (orig_path, path_ptr); |
81239425 | 598 | cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size); |
b80864fb | 599 | setenv ("PATH", new_path, 1); |
81239425 | 600 | } |
d8d2a3ee | 601 | cygwin_conv_path (CCP_POSIX_TO_WIN_A, program, real_path, PATH_MAX); |
b80864fb DJ |
602 | program = real_path; |
603 | #endif | |
604 | ||
ed50f18f | 605 | argslen = 1; |
b80864fb DJ |
606 | for (argc = 1; program_args[argc]; argc++) |
607 | argslen += strlen (program_args[argc]) + 1; | |
608 | args = alloca (argslen); | |
ed50f18f | 609 | args[0] = '\0'; |
b80864fb DJ |
610 | for (argc = 1; program_args[argc]; argc++) |
611 | { | |
612 | /* FIXME: Can we do better about quoting? How does Cygwin | |
1b3f6016 | 613 | handle this? */ |
b80864fb DJ |
614 | strcat (args, " "); |
615 | strcat (args, program_args[argc]); | |
616 | } | |
ed50f18f | 617 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 618 | |
ed50f18f | 619 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 620 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 621 | #endif |
b80864fb | 622 | |
aec18585 PA |
623 | ret = create_process (program, args, flags, &pi); |
624 | err = GetLastError (); | |
625 | if (!ret && err == ERROR_FILE_NOT_FOUND) | |
626 | { | |
627 | char *exename = alloca (strlen (program) + 5); | |
628 | strcat (strcpy (exename, program), ".exe"); | |
629 | ret = create_process (exename, args, flags, &pi); | |
630 | err = GetLastError (); | |
631 | } | |
b80864fb DJ |
632 | |
633 | #ifndef USE_WIN32API | |
634 | if (orig_path) | |
635 | setenv ("PATH", orig_path, 1); | |
636 | #endif | |
637 | ||
638 | if (!ret) | |
639 | { | |
ed50f18f PA |
640 | error ("Error creating process \"%s%s\", (error %d): %s\n", |
641 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
642 | } |
643 | else | |
644 | { | |
645 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
646 | } | |
647 | ||
ed50f18f PA |
648 | #ifndef _WIN32_WCE |
649 | /* On Windows CE this handle can't be closed. The OS reuses | |
650 | it in the debug events, while the 9x/NT versions of Windows | |
651 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 652 | CloseHandle (pi.hThread); |
ed50f18f | 653 | #endif |
b80864fb | 654 | |
95954743 | 655 | do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0); |
b80864fb DJ |
656 | |
657 | return current_process_id; | |
658 | } | |
659 | ||
660 | /* Attach to a running process. | |
661 | PID is the process ID to attach to, specified by the user | |
662 | or a higher layer. */ | |
663 | static int | |
664 | win32_attach (unsigned long pid) | |
665 | { | |
5ca906e6 | 666 | HANDLE h; |
bf914831 | 667 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
5ca906e6 | 668 | DWORD err; |
ed50f18f PA |
669 | #ifdef _WIN32_WCE |
670 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
671 | #else | |
672 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
673 | #endif | |
bf914831 | 674 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
b80864fb | 675 | |
5ca906e6 PA |
676 | h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
677 | if (h != NULL) | |
1d5315fe | 678 | { |
5ca906e6 PA |
679 | if (DebugActiveProcess (pid)) |
680 | { | |
681 | if (DebugSetProcessKillOnExit != NULL) | |
682 | DebugSetProcessKillOnExit (FALSE); | |
683 | ||
d97903b2 | 684 | /* win32_wait needs to know we're attaching. */ |
1b3f6016 | 685 | attaching = 1; |
95954743 | 686 | do_initial_child_stuff (h, pid, 1); |
5ca906e6 PA |
687 | return 0; |
688 | } | |
689 | ||
690 | CloseHandle (h); | |
b80864fb DJ |
691 | } |
692 | ||
5ca906e6 PA |
693 | err = GetLastError (); |
694 | error ("Attach to process failed (error %d): %s\n", | |
695 | (int) err, strwinerror (err)); | |
b80864fb DJ |
696 | } |
697 | ||
bce7165d PA |
698 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
699 | static void | |
700 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
701 | { | |
702 | #define READ_BUFFER_LEN 1024 | |
703 | CORE_ADDR addr; | |
704 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
705 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
706 | ||
707 | if (nbytes == 0) | |
708 | return; | |
709 | ||
710 | if (nbytes > READ_BUFFER_LEN) | |
711 | nbytes = READ_BUFFER_LEN; | |
712 | ||
713 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
714 | ||
715 | if (current_event.u.DebugString.fUnicode) | |
716 | { | |
717 | /* The event tells us how many bytes, not chars, even | |
1b3f6016 | 718 | in Unicode. */ |
bce7165d PA |
719 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; |
720 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
721 | return; | |
722 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
723 | } | |
724 | else | |
725 | { | |
726 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
727 | return; | |
728 | } | |
729 | ||
730 | if (strncmp (s, "cYg", 3) != 0) | |
45e2715e PA |
731 | { |
732 | if (!server_waiting) | |
733 | { | |
734 | OUTMSG2(("%s", s)); | |
735 | return; | |
736 | } | |
737 | ||
738 | monitor_output (s); | |
739 | } | |
bce7165d PA |
740 | #undef READ_BUFFER_LEN |
741 | } | |
742 | ||
5ac588cf PA |
743 | static void |
744 | win32_clear_inferiors (void) | |
745 | { | |
746 | if (current_process_handle != NULL) | |
747 | CloseHandle (current_process_handle); | |
748 | ||
749 | for_each_inferior (&all_threads, delete_thread_info); | |
750 | clear_inferiors (); | |
751 | } | |
752 | ||
b80864fb | 753 | /* Kill all inferiors. */ |
95954743 PA |
754 | static int |
755 | win32_kill (int pid) | |
b80864fb | 756 | { |
95954743 PA |
757 | struct process_info *process; |
758 | ||
9d606399 | 759 | if (current_process_handle == NULL) |
95954743 | 760 | return -1; |
9d606399 | 761 | |
b80864fb DJ |
762 | TerminateProcess (current_process_handle, 0); |
763 | for (;;) | |
764 | { | |
765 | if (!child_continue (DBG_CONTINUE, -1)) | |
766 | break; | |
767 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
768 | break; | |
769 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
770 | break; | |
bce7165d PA |
771 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
772 | { | |
1b3f6016 | 773 | struct target_waitstatus our_status = { 0 }; |
bce7165d | 774 | handle_output_debug_string (&our_status); |
1b3f6016 | 775 | } |
b80864fb | 776 | } |
ed50f18f | 777 | |
5ac588cf | 778 | win32_clear_inferiors (); |
95954743 PA |
779 | |
780 | process = find_process_pid (pid); | |
781 | remove_process (process); | |
782 | return 0; | |
b80864fb DJ |
783 | } |
784 | ||
95954743 | 785 | /* Detach from inferior PID. */ |
444d6139 | 786 | static int |
95954743 | 787 | win32_detach (int pid) |
b80864fb | 788 | { |
95954743 | 789 | struct process_info *process; |
bf914831 PA |
790 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
791 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
792 | #ifdef _WIN32_WCE |
793 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
794 | #else | |
795 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
796 | #endif | |
bf914831 PA |
797 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
798 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 799 | |
444d6139 PA |
800 | if (DebugSetProcessKillOnExit == NULL |
801 | || DebugActiveProcessStop == NULL) | |
802 | return -1; | |
b80864fb | 803 | |
444d6139 PA |
804 | { |
805 | struct thread_resume resume; | |
95954743 | 806 | resume.thread = minus_one_ptid; |
bd99dc85 | 807 | resume.kind = resume_continue; |
444d6139 | 808 | resume.sig = 0; |
2bd7c093 | 809 | win32_resume (&resume, 1); |
444d6139 PA |
810 | } |
811 | ||
812 | if (!DebugActiveProcessStop (current_process_id)) | |
5ac588cf PA |
813 | return -1; |
814 | ||
444d6139 | 815 | DebugSetProcessKillOnExit (FALSE); |
95954743 PA |
816 | process = find_process_pid (pid); |
817 | remove_process (process); | |
444d6139 | 818 | |
5ac588cf | 819 | win32_clear_inferiors (); |
444d6139 PA |
820 | return 0; |
821 | } | |
822 | ||
505106cd PA |
823 | static void |
824 | win32_mourn (struct process_info *process) | |
825 | { | |
826 | remove_process (process); | |
827 | } | |
828 | ||
444d6139 PA |
829 | /* Wait for inferiors to end. */ |
830 | static void | |
95954743 | 831 | win32_join (int pid) |
444d6139 | 832 | { |
95954743 | 833 | HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
5ac588cf PA |
834 | if (h != NULL) |
835 | { | |
836 | WaitForSingleObject (h, INFINITE); | |
837 | CloseHandle (h); | |
838 | } | |
b80864fb DJ |
839 | } |
840 | ||
841 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
842 | static int | |
95954743 | 843 | win32_thread_alive (ptid_t ptid) |
b80864fb DJ |
844 | { |
845 | int res; | |
846 | ||
847 | /* Our thread list is reliable; don't bother to poll target | |
848 | threads. */ | |
95954743 | 849 | if (find_inferior_id (&all_threads, ptid) != NULL) |
b80864fb DJ |
850 | res = 1; |
851 | else | |
852 | res = 0; | |
853 | return res; | |
854 | } | |
855 | ||
856 | /* Resume the inferior process. RESUME_INFO describes how we want | |
857 | to resume. */ | |
858 | static void | |
2bd7c093 | 859 | win32_resume (struct thread_resume *resume_info, size_t n) |
b80864fb DJ |
860 | { |
861 | DWORD tid; | |
2ea28649 | 862 | enum gdb_signal sig; |
b80864fb | 863 | int step; |
41093d81 | 864 | win32_thread_info *th; |
b80864fb | 865 | DWORD continue_status = DBG_CONTINUE; |
95954743 | 866 | ptid_t ptid; |
b80864fb DJ |
867 | |
868 | /* This handles the very limited set of resume packets that GDB can | |
869 | currently produce. */ | |
870 | ||
95954743 | 871 | if (n == 1 && ptid_equal (resume_info[0].thread, minus_one_ptid)) |
b80864fb | 872 | tid = -1; |
2bd7c093 | 873 | else if (n > 1) |
b80864fb DJ |
874 | tid = -1; |
875 | else | |
876 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
877 | the Windows resume code do the right thing for thread switching. */ | |
878 | tid = current_event.dwThreadId; | |
879 | ||
95954743 | 880 | if (!ptid_equal (resume_info[0].thread, minus_one_ptid)) |
b80864fb DJ |
881 | { |
882 | sig = resume_info[0].sig; | |
bd99dc85 | 883 | step = resume_info[0].kind == resume_step; |
b80864fb DJ |
884 | } |
885 | else | |
886 | { | |
887 | sig = 0; | |
888 | step = 0; | |
889 | } | |
890 | ||
a493e3e2 | 891 | if (sig != GDB_SIGNAL_0) |
b80864fb DJ |
892 | { |
893 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
894 | { | |
895 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); | |
896 | } | |
897 | else if (sig == last_sig) | |
898 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
899 | else | |
900 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); | |
901 | } | |
902 | ||
a493e3e2 | 903 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
904 | |
905 | /* Get context for the currently selected thread. */ | |
95954743 PA |
906 | ptid = debug_event_ptid (¤t_event); |
907 | th = thread_rec (ptid, FALSE); | |
b80864fb DJ |
908 | if (th) |
909 | { | |
910 | if (th->context.ContextFlags) | |
911 | { | |
b80864fb DJ |
912 | /* Move register values from the inferior into the thread |
913 | context structure. */ | |
914 | regcache_invalidate (); | |
915 | ||
916 | if (step) | |
ed50f18f PA |
917 | { |
918 | if (the_low_target.single_step != NULL) | |
919 | (*the_low_target.single_step) (th); | |
920 | else | |
921 | error ("Single stepping is not supported " | |
922 | "in this configuration.\n"); | |
923 | } | |
34b34921 | 924 | |
9c6c8194 | 925 | win32_set_thread_context (th); |
b80864fb DJ |
926 | th->context.ContextFlags = 0; |
927 | } | |
928 | } | |
929 | ||
930 | /* Allow continuing with the same signal that interrupted us. | |
931 | Otherwise complain. */ | |
932 | ||
933 | child_continue (continue_status, tid); | |
934 | } | |
935 | ||
255e7678 DJ |
936 | static void |
937 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
938 | { | |
939 | char buf[MAX_PATH + 1]; | |
940 | char buf2[MAX_PATH + 1]; | |
941 | ||
942 | #ifdef _WIN32_WCE | |
943 | WIN32_FIND_DATA w32_fd; | |
944 | WCHAR wname[MAX_PATH + 1]; | |
945 | mbstowcs (wname, name, MAX_PATH); | |
946 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
947 | #else | |
948 | WIN32_FIND_DATAA w32_fd; | |
949 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
950 | #endif | |
951 | ||
952 | if (h == INVALID_HANDLE_VALUE) | |
953 | strcpy (buf, name); | |
954 | else | |
955 | { | |
956 | FindClose (h); | |
957 | strcpy (buf, name); | |
958 | #ifndef _WIN32_WCE | |
959 | { | |
960 | char cwd[MAX_PATH + 1]; | |
961 | char *p; | |
962 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
963 | { | |
964 | p = strrchr (buf, '\\'); | |
965 | if (p) | |
966 | p[1] = '\0'; | |
967 | SetCurrentDirectoryA (buf); | |
968 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
969 | SetCurrentDirectoryA (cwd); | |
970 | } | |
971 | } | |
972 | #endif | |
973 | } | |
974 | ||
cf6e3471 PA |
975 | #ifndef _WIN32_WCE |
976 | if (strcasecmp (buf, "ntdll.dll") == 0) | |
977 | { | |
978 | GetSystemDirectoryA (buf, sizeof (buf)); | |
979 | strcat (buf, "\\ntdll.dll"); | |
980 | } | |
981 | #endif | |
982 | ||
255e7678 | 983 | #ifdef __CYGWIN__ |
81239425 | 984 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2)); |
255e7678 DJ |
985 | #else |
986 | strcpy (buf2, buf); | |
987 | #endif | |
988 | ||
989 | loaded_dll (buf2, load_addr); | |
990 | } | |
991 | ||
992 | static char * | |
993 | get_image_name (HANDLE h, void *address, int unicode) | |
994 | { | |
995 | static char buf[(2 * MAX_PATH) + 1]; | |
996 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
997 | char *address_ptr; | |
998 | int len = 0; | |
999 | char b[2]; | |
e8f0053d | 1000 | SIZE_T done; |
255e7678 DJ |
1001 | |
1002 | /* Attempt to read the name of the dll that was detected. | |
1003 | This is documented to work only when actively debugging | |
1004 | a program. It will not work for attached processes. */ | |
1005 | if (address == NULL) | |
1006 | return NULL; | |
1007 | ||
1008 | #ifdef _WIN32_WCE | |
1009 | /* Windows CE reports the address of the image name, | |
1010 | instead of an address of a pointer into the image name. */ | |
1011 | address_ptr = address; | |
1012 | #else | |
1013 | /* See if we could read the address of a string, and that the | |
1014 | address isn't null. */ | |
1015 | if (!ReadProcessMemory (h, address, &address_ptr, | |
1016 | sizeof (address_ptr), &done) | |
1017 | || done != sizeof (address_ptr) | |
1018 | || !address_ptr) | |
1019 | return NULL; | |
1020 | #endif | |
1021 | ||
1022 | /* Find the length of the string */ | |
1023 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) | |
1024 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
1025 | continue; | |
1026 | ||
1027 | if (!unicode) | |
1028 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
1029 | else | |
1030 | { | |
1031 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
1032 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
1033 | &done); | |
1034 | ||
1035 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
1036 | } | |
1037 | ||
1038 | return buf; | |
1039 | } | |
1040 | ||
1041 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, | |
1042 | DWORD, LPDWORD); | |
1043 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, | |
1044 | LPMODULEINFO, DWORD); | |
1045 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
1046 | LPSTR, DWORD); | |
1047 | ||
1048 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
1049 | static winapi_GetModuleInformation win32_GetModuleInformation; | |
1050 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
1051 | ||
1052 | static BOOL | |
1053 | load_psapi (void) | |
1054 | { | |
1055 | static int psapi_loaded = 0; | |
1056 | static HMODULE dll = NULL; | |
1057 | ||
1058 | if (!psapi_loaded) | |
1059 | { | |
1060 | psapi_loaded = 1; | |
1061 | dll = LoadLibrary (TEXT("psapi.dll")); | |
1062 | if (!dll) | |
1063 | return FALSE; | |
1064 | win32_EnumProcessModules = | |
1065 | GETPROCADDRESS (dll, EnumProcessModules); | |
1066 | win32_GetModuleInformation = | |
1067 | GETPROCADDRESS (dll, GetModuleInformation); | |
1068 | win32_GetModuleFileNameExA = | |
1069 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
1070 | } | |
1071 | ||
1072 | return (win32_EnumProcessModules != NULL | |
1073 | && win32_GetModuleInformation != NULL | |
1074 | && win32_GetModuleFileNameExA != NULL); | |
1075 | } | |
1076 | ||
1077 | static int | |
e8f0053d | 1078 | psapi_get_dll_name (LPVOID BaseAddress, char *dll_name_ret) |
255e7678 DJ |
1079 | { |
1080 | DWORD len; | |
1081 | MODULEINFO mi; | |
1082 | size_t i; | |
1083 | HMODULE dh_buf[1]; | |
1084 | HMODULE *DllHandle = dh_buf; | |
1085 | DWORD cbNeeded; | |
1086 | BOOL ok; | |
1087 | ||
1088 | if (!load_psapi ()) | |
1089 | goto failed; | |
1090 | ||
1091 | cbNeeded = 0; | |
1092 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1093 | DllHandle, | |
1094 | sizeof (HMODULE), | |
1095 | &cbNeeded); | |
1096 | ||
1097 | if (!ok || !cbNeeded) | |
1098 | goto failed; | |
1099 | ||
1100 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
1101 | if (!DllHandle) | |
1102 | goto failed; | |
1103 | ||
1104 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1105 | DllHandle, | |
1106 | cbNeeded, | |
1107 | &cbNeeded); | |
1108 | if (!ok) | |
1109 | goto failed; | |
1110 | ||
1111 | for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) | |
1112 | { | |
1113 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
1114 | DllHandle[i], | |
1115 | &mi, | |
1116 | sizeof (mi))) | |
1117 | { | |
1118 | DWORD err = GetLastError (); | |
1119 | error ("Can't get module info: (error %d): %s\n", | |
1120 | (int) err, strwinerror (err)); | |
1121 | } | |
1122 | ||
e8f0053d | 1123 | if (mi.lpBaseOfDll == BaseAddress) |
255e7678 DJ |
1124 | { |
1125 | len = (*win32_GetModuleFileNameExA) (current_process_handle, | |
1126 | DllHandle[i], | |
1127 | dll_name_ret, | |
1128 | MAX_PATH); | |
1129 | if (len == 0) | |
1130 | { | |
1131 | DWORD err = GetLastError (); | |
1132 | error ("Error getting dll name: (error %d): %s\n", | |
1133 | (int) err, strwinerror (err)); | |
1134 | } | |
1135 | return 1; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | failed: | |
1140 | dll_name_ret[0] = '\0'; | |
1141 | return 0; | |
1142 | } | |
1143 | ||
379a5e2d JB |
1144 | #ifndef _WIN32_WCE |
1145 | /* On certain versions of Windows, the information about ntdll.dll | |
1146 | is not available yet at the time we get the LOAD_DLL_DEBUG_EVENT, | |
1147 | thus preventing us from reporting this DLL as an SO. This has been | |
1148 | witnessed on Windows 8.1, for instance. A possible explanation | |
1149 | is that ntdll.dll might be mapped before the SO info gets created | |
1150 | by the Windows system -- ntdll.dll is the first DLL to be reported | |
1151 | via LOAD_DLL_DEBUG_EVENT and other DLLs do not seem to suffer from | |
1152 | that problem. | |
1153 | ||
1154 | If we indeed are missing ntdll.dll, this function tries to recover | |
1155 | from this issue, after the fact. Do nothing if we encounter any | |
1156 | issue trying to locate that DLL. */ | |
1157 | ||
1158 | static void | |
1159 | win32_ensure_ntdll_loaded (void) | |
1160 | { | |
1161 | struct inferior_list_entry *dll_e; | |
1162 | size_t i; | |
1163 | HMODULE dh_buf[1]; | |
1164 | HMODULE *DllHandle = dh_buf; | |
1165 | DWORD cbNeeded; | |
1166 | BOOL ok; | |
1167 | ||
1168 | for (dll_e = all_dlls.head; dll_e != NULL; dll_e = dll_e->next) | |
1169 | { | |
1170 | struct dll_info *dll = (struct dll_info *) dll_e; | |
1171 | ||
1172 | if (strcasecmp (lbasename (dll->name), "ntdll.dll") == 0) | |
1173 | return; | |
1174 | } | |
1175 | ||
1176 | if (!load_psapi ()) | |
1177 | return; | |
1178 | ||
1179 | cbNeeded = 0; | |
1180 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1181 | DllHandle, | |
1182 | sizeof (HMODULE), | |
1183 | &cbNeeded); | |
1184 | ||
1185 | if (!ok || !cbNeeded) | |
1186 | return; | |
1187 | ||
1188 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
1189 | if (!DllHandle) | |
1190 | return; | |
1191 | ||
1192 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1193 | DllHandle, | |
1194 | cbNeeded, | |
1195 | &cbNeeded); | |
1196 | if (!ok) | |
1197 | return; | |
1198 | ||
1199 | for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) | |
1200 | { | |
1201 | MODULEINFO mi; | |
1202 | char dll_name[MAX_PATH]; | |
1203 | ||
1204 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
1205 | DllHandle[i], | |
1206 | &mi, | |
1207 | sizeof (mi))) | |
1208 | continue; | |
1209 | if ((*win32_GetModuleFileNameExA) (current_process_handle, | |
1210 | DllHandle[i], | |
1211 | dll_name, | |
1212 | MAX_PATH) == 0) | |
1213 | continue; | |
1214 | if (strcasecmp (lbasename (dll_name), "ntdll.dll") == 0) | |
1215 | { | |
1216 | win32_add_one_solib (dll_name, | |
1217 | (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll); | |
1218 | return; | |
1219 | } | |
1220 | } | |
1221 | } | |
1222 | #endif | |
1223 | ||
255e7678 DJ |
1224 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); |
1225 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
1226 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
1227 | ||
1228 | static winapi_CreateToolhelp32Snapshot win32_CreateToolhelp32Snapshot; | |
1229 | static winapi_Module32First win32_Module32First; | |
1230 | static winapi_Module32Next win32_Module32Next; | |
6b3d9b83 PA |
1231 | #ifdef _WIN32_WCE |
1232 | typedef BOOL (WINAPI *winapi_CloseToolhelp32Snapshot) (HANDLE); | |
1233 | static winapi_CloseToolhelp32Snapshot win32_CloseToolhelp32Snapshot; | |
1234 | #endif | |
255e7678 DJ |
1235 | |
1236 | static BOOL | |
1237 | load_toolhelp (void) | |
1238 | { | |
1239 | static int toolhelp_loaded = 0; | |
1240 | static HMODULE dll = NULL; | |
1241 | ||
1242 | if (!toolhelp_loaded) | |
1243 | { | |
1244 | toolhelp_loaded = 1; | |
1245 | #ifndef _WIN32_WCE | |
1246 | dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1247 | #else | |
6b3d9b83 | 1248 | dll = LoadLibrary (L"TOOLHELP.DLL"); |
255e7678 DJ |
1249 | #endif |
1250 | if (!dll) | |
1251 | return FALSE; | |
1252 | ||
1253 | win32_CreateToolhelp32Snapshot = | |
1254 | GETPROCADDRESS (dll, CreateToolhelp32Snapshot); | |
1255 | win32_Module32First = GETPROCADDRESS (dll, Module32First); | |
1256 | win32_Module32Next = GETPROCADDRESS (dll, Module32Next); | |
6b3d9b83 PA |
1257 | #ifdef _WIN32_WCE |
1258 | win32_CloseToolhelp32Snapshot = | |
1259 | GETPROCADDRESS (dll, CloseToolhelp32Snapshot); | |
1260 | #endif | |
255e7678 DJ |
1261 | } |
1262 | ||
1263 | return (win32_CreateToolhelp32Snapshot != NULL | |
1264 | && win32_Module32First != NULL | |
6b3d9b83 PA |
1265 | && win32_Module32Next != NULL |
1266 | #ifdef _WIN32_WCE | |
1267 | && win32_CloseToolhelp32Snapshot != NULL | |
1268 | #endif | |
1269 | ); | |
255e7678 DJ |
1270 | } |
1271 | ||
1272 | static int | |
e8f0053d | 1273 | toolhelp_get_dll_name (LPVOID BaseAddress, char *dll_name_ret) |
255e7678 DJ |
1274 | { |
1275 | HANDLE snapshot_module; | |
1276 | MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) }; | |
6b3d9b83 | 1277 | int found = 0; |
255e7678 DJ |
1278 | |
1279 | if (!load_toolhelp ()) | |
1280 | return 0; | |
1281 | ||
1282 | snapshot_module = win32_CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, | |
1283 | current_event.dwProcessId); | |
1284 | if (snapshot_module == INVALID_HANDLE_VALUE) | |
1285 | return 0; | |
1286 | ||
1287 | /* Ignore the first module, which is the exe. */ | |
6b3d9b83 PA |
1288 | if (win32_Module32First (snapshot_module, &modEntry)) |
1289 | while (win32_Module32Next (snapshot_module, &modEntry)) | |
e8f0053d | 1290 | if (modEntry.modBaseAddr == BaseAddress) |
6b3d9b83 | 1291 | { |
255e7678 | 1292 | #ifdef UNICODE |
6b3d9b83 | 1293 | wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1); |
255e7678 | 1294 | #else |
6b3d9b83 | 1295 | strcpy (dll_name_ret, modEntry.szExePath); |
255e7678 | 1296 | #endif |
6b3d9b83 PA |
1297 | found = 1; |
1298 | break; | |
1299 | } | |
255e7678 | 1300 | |
6b3d9b83 PA |
1301 | #ifdef _WIN32_WCE |
1302 | win32_CloseToolhelp32Snapshot (snapshot_module); | |
1303 | #else | |
255e7678 | 1304 | CloseHandle (snapshot_module); |
6b3d9b83 PA |
1305 | #endif |
1306 | return found; | |
255e7678 DJ |
1307 | } |
1308 | ||
1309 | static void | |
1310 | handle_load_dll (void) | |
1311 | { | |
1312 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
1313 | char dll_buf[MAX_PATH + 1]; | |
1314 | char *dll_name = NULL; | |
e8f0053d | 1315 | CORE_ADDR load_addr; |
255e7678 DJ |
1316 | |
1317 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; | |
1318 | ||
34d86ddd PA |
1319 | /* Windows does not report the image name of the dlls in the debug |
1320 | event on attaches. We resort to iterating over the list of | |
1321 | loaded dlls looking for a match by image base. */ | |
e8f0053d | 1322 | if (!psapi_get_dll_name (event->lpBaseOfDll, dll_buf)) |
34d86ddd PA |
1323 | { |
1324 | if (!server_waiting) | |
1325 | /* On some versions of Windows and Windows CE, we can't create | |
1326 | toolhelp snapshots while the inferior is stopped in a | |
1327 | LOAD_DLL_DEBUG_EVENT due to a dll load, but we can while | |
1328 | Windows is reporting the already loaded dlls. */ | |
e8f0053d | 1329 | toolhelp_get_dll_name (event->lpBaseOfDll, dll_buf); |
34d86ddd | 1330 | } |
255e7678 DJ |
1331 | |
1332 | dll_name = dll_buf; | |
1333 | ||
1334 | if (*dll_name == '\0') | |
1335 | dll_name = get_image_name (current_process_handle, | |
1336 | event->lpImageName, event->fUnicode); | |
1337 | if (!dll_name) | |
1338 | return; | |
1339 | ||
1340 | /* The symbols in a dll are offset by 0x1000, which is the | |
7a9dd1b2 | 1341 | offset from 0 of the first byte in an image - because |
255e7678 DJ |
1342 | of the file header and the section alignment. */ |
1343 | ||
e8f0053d | 1344 | load_addr = (CORE_ADDR) (uintptr_t) event->lpBaseOfDll + 0x1000; |
255e7678 DJ |
1345 | win32_add_one_solib (dll_name, load_addr); |
1346 | } | |
1347 | ||
1348 | static void | |
1349 | handle_unload_dll (void) | |
1350 | { | |
1351 | CORE_ADDR load_addr = | |
e8f0053d | 1352 | (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll; |
255e7678 DJ |
1353 | load_addr += 0x1000; |
1354 | unloaded_dll (NULL, load_addr); | |
1355 | } | |
1356 | ||
34b34921 | 1357 | static void |
b80864fb DJ |
1358 | handle_exception (struct target_waitstatus *ourstatus) |
1359 | { | |
b80864fb DJ |
1360 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
1361 | ||
1362 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1363 | ||
b80864fb DJ |
1364 | switch (code) |
1365 | { | |
1366 | case EXCEPTION_ACCESS_VIOLATION: | |
1367 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
a493e3e2 | 1368 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
b80864fb DJ |
1369 | break; |
1370 | case STATUS_STACK_OVERFLOW: | |
1371 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
a493e3e2 | 1372 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
b80864fb DJ |
1373 | break; |
1374 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1375 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
a493e3e2 | 1376 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1377 | break; |
1378 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1379 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
a493e3e2 | 1380 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1381 | break; |
1382 | case STATUS_FLOAT_INEXACT_RESULT: | |
1383 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
a493e3e2 | 1384 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1385 | break; |
1386 | case STATUS_FLOAT_INVALID_OPERATION: | |
1387 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
a493e3e2 | 1388 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1389 | break; |
1390 | case STATUS_FLOAT_OVERFLOW: | |
1391 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
a493e3e2 | 1392 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1393 | break; |
1394 | case STATUS_FLOAT_STACK_CHECK: | |
1395 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
a493e3e2 | 1396 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1397 | break; |
1398 | case STATUS_FLOAT_UNDERFLOW: | |
1399 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
a493e3e2 | 1400 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1401 | break; |
1402 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
1403 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
a493e3e2 | 1404 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1405 | break; |
1406 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
1407 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
a493e3e2 | 1408 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1409 | break; |
1410 | case STATUS_INTEGER_OVERFLOW: | |
1411 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
a493e3e2 | 1412 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1413 | break; |
1414 | case EXCEPTION_BREAKPOINT: | |
1415 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
a493e3e2 | 1416 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
ed50f18f PA |
1417 | #ifdef _WIN32_WCE |
1418 | /* Remove the initial breakpoint. */ | |
1419 | check_breakpoints ((CORE_ADDR) (long) current_event | |
1b3f6016 | 1420 | .u.Exception.ExceptionRecord.ExceptionAddress); |
ed50f18f | 1421 | #endif |
b80864fb DJ |
1422 | break; |
1423 | case DBG_CONTROL_C: | |
1424 | OUTMSG2 (("DBG_CONTROL_C")); | |
a493e3e2 | 1425 | ourstatus->value.sig = GDB_SIGNAL_INT; |
b80864fb DJ |
1426 | break; |
1427 | case DBG_CONTROL_BREAK: | |
1428 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
a493e3e2 | 1429 | ourstatus->value.sig = GDB_SIGNAL_INT; |
b80864fb DJ |
1430 | break; |
1431 | case EXCEPTION_SINGLE_STEP: | |
1432 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
a493e3e2 | 1433 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1434 | break; |
1435 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
1436 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
a493e3e2 | 1437 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1438 | break; |
1439 | case EXCEPTION_PRIV_INSTRUCTION: | |
1440 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
a493e3e2 | 1441 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1442 | break; |
1443 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1444 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
a493e3e2 | 1445 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1446 | break; |
1447 | default: | |
1448 | if (current_event.u.Exception.dwFirstChance) | |
34b34921 PA |
1449 | { |
1450 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1451 | return; | |
1452 | } | |
dfe07582 CV |
1453 | OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s", |
1454 | (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1455 | phex_nz ((uintptr_t) current_event.u.Exception.ExceptionRecord. | |
1456 | ExceptionAddress, sizeof (uintptr_t)))); | |
a493e3e2 | 1457 | ourstatus->value.sig = GDB_SIGNAL_UNKNOWN; |
b80864fb DJ |
1458 | break; |
1459 | } | |
1460 | OUTMSG2 (("\n")); | |
1461 | last_sig = ourstatus->value.sig; | |
b80864fb DJ |
1462 | } |
1463 | ||
4d5d1aaa | 1464 | |
34b34921 | 1465 | static void |
4d5d1aaa PA |
1466 | suspend_one_thread (struct inferior_list_entry *entry) |
1467 | { | |
1468 | struct thread_info *thread = (struct thread_info *) entry; | |
1469 | win32_thread_info *th = inferior_target_data (thread); | |
1470 | ||
1471 | if (!th->suspended) | |
1472 | { | |
1473 | if (SuspendThread (th->h) == (DWORD) -1) | |
1474 | { | |
1475 | DWORD err = GetLastError (); | |
1476 | OUTMSG (("warning: SuspendThread failed in suspend_one_thread, " | |
1477 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
1478 | } | |
1479 | else | |
1480 | th->suspended = 1; | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | static void | |
1485 | fake_breakpoint_event (void) | |
b80864fb | 1486 | { |
4d5d1aaa | 1487 | OUTMSG2(("fake_breakpoint_event\n")); |
b80864fb | 1488 | |
4d5d1aaa PA |
1489 | faked_breakpoint = 1; |
1490 | ||
1491 | memset (¤t_event, 0, sizeof (current_event)); | |
1492 | current_event.dwThreadId = main_thread_id; | |
1493 | current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT; | |
1494 | current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1495 | = EXCEPTION_BREAKPOINT; | |
1496 | ||
1497 | for_each_inferior (&all_threads, suspend_one_thread); | |
1498 | } | |
1499 | ||
b65d95c5 DJ |
1500 | #ifdef _WIN32_WCE |
1501 | static int | |
1502 | auto_delete_breakpoint (CORE_ADDR stop_pc) | |
1503 | { | |
1504 | return 1; | |
1505 | } | |
1506 | #endif | |
1507 | ||
4d5d1aaa PA |
1508 | /* Get the next event from the child. */ |
1509 | ||
1510 | static int | |
1511 | get_child_debug_event (struct target_waitstatus *ourstatus) | |
1512 | { | |
95954743 PA |
1513 | ptid_t ptid; |
1514 | ||
a493e3e2 | 1515 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
1516 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
1517 | ||
4d5d1aaa PA |
1518 | /* Check if GDB sent us an interrupt request. */ |
1519 | check_remote_input_interrupt_request (); | |
1520 | ||
1521 | if (soft_interrupt_requested) | |
1522 | { | |
1523 | soft_interrupt_requested = 0; | |
1524 | fake_breakpoint_event (); | |
1525 | goto gotevent; | |
1526 | } | |
1527 | ||
d97903b2 PA |
1528 | #ifndef _WIN32_WCE |
1529 | attaching = 0; | |
1530 | #else | |
1531 | if (attaching) | |
1532 | { | |
1533 | /* WinCE doesn't set an initial breakpoint automatically. To | |
1b3f6016 PA |
1534 | stop the inferior, we flush all currently pending debug |
1535 | events -- the thread list and the dll list are always | |
1536 | reported immediatelly without delay, then, we suspend all | |
1537 | threads and pretend we saw a trap at the current PC of the | |
1538 | main thread. | |
1539 | ||
1540 | Contrary to desktop Windows, Windows CE *does* report the dll | |
1541 | names on LOAD_DLL_DEBUG_EVENTs resulting from a | |
1542 | DebugActiveProcess call. This limits the way we can detect | |
1543 | if all the dlls have already been reported. If we get a real | |
1544 | debug event before leaving attaching, the worst that will | |
1545 | happen is the user will see a spurious breakpoint. */ | |
d97903b2 PA |
1546 | |
1547 | current_event.dwDebugEventCode = 0; | |
1548 | if (!WaitForDebugEvent (¤t_event, 0)) | |
1b3f6016 PA |
1549 | { |
1550 | OUTMSG2(("no attach events left\n")); | |
1551 | fake_breakpoint_event (); | |
1552 | attaching = 0; | |
1553 | } | |
d97903b2 | 1554 | else |
1b3f6016 | 1555 | OUTMSG2(("got attach event\n")); |
d97903b2 PA |
1556 | } |
1557 | else | |
1558 | #endif | |
1559 | { | |
1560 | /* Keep the wait time low enough for confortable remote | |
1b3f6016 PA |
1561 | interruption, but high enough so gdbserver doesn't become a |
1562 | bottleneck. */ | |
d97903b2 | 1563 | if (!WaitForDebugEvent (¤t_event, 250)) |
912cf4ba PA |
1564 | { |
1565 | DWORD e = GetLastError(); | |
1566 | ||
1567 | if (e == ERROR_PIPE_NOT_CONNECTED) | |
1568 | { | |
1569 | /* This will happen if the loader fails to succesfully | |
1570 | load the application, e.g., if the main executable | |
1571 | tries to pull in a non-existing export from a | |
1572 | DLL. */ | |
1573 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1574 | ourstatus->value.integer = 1; | |
1575 | return 1; | |
1576 | } | |
1577 | ||
1578 | return 0; | |
1579 | } | |
d97903b2 | 1580 | } |
4d5d1aaa PA |
1581 | |
1582 | gotevent: | |
b80864fb | 1583 | |
34b34921 | 1584 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1585 | { |
1586 | case CREATE_THREAD_DEBUG_EVENT: | |
1587 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
dfe07582 | 1588 | "for pid=%u tid=%x)\n", |
b80864fb DJ |
1589 | (unsigned) current_event.dwProcessId, |
1590 | (unsigned) current_event.dwThreadId)); | |
1591 | ||
1592 | /* Record the existence of this thread. */ | |
95954743 PA |
1593 | child_add_thread (current_event.dwProcessId, |
1594 | current_event.dwThreadId, | |
711e434b PM |
1595 | current_event.u.CreateThread.hThread, |
1596 | current_event.u.CreateThread.lpThreadLocalBase); | |
b80864fb DJ |
1597 | break; |
1598 | ||
1599 | case EXIT_THREAD_DEBUG_EVENT: | |
1600 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
dfe07582 | 1601 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1602 | (unsigned) current_event.dwProcessId, |
1603 | (unsigned) current_event.dwThreadId)); | |
95954743 PA |
1604 | child_delete_thread (current_event.dwProcessId, |
1605 | current_event.dwThreadId); | |
aeeb81d1 PA |
1606 | |
1607 | current_inferior = (struct thread_info *) all_threads.head; | |
1608 | return 1; | |
b80864fb DJ |
1609 | |
1610 | case CREATE_PROCESS_DEBUG_EVENT: | |
1611 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1612 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1613 | (unsigned) current_event.dwProcessId, |
1614 | (unsigned) current_event.dwThreadId)); | |
1615 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1616 | ||
1617 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1618 | main_thread_id = current_event.dwThreadId; | |
1619 | ||
1620 | ourstatus->kind = TARGET_WAITKIND_EXECD; | |
1621 | ourstatus->value.execd_pathname = "Main executable"; | |
1622 | ||
1623 | /* Add the main thread. */ | |
95954743 PA |
1624 | child_add_thread (current_event.dwProcessId, |
1625 | main_thread_id, | |
711e434b PM |
1626 | current_event.u.CreateProcessInfo.hThread, |
1627 | current_event.u.CreateProcessInfo.lpThreadLocalBase); | |
b80864fb | 1628 | |
95954743 | 1629 | ourstatus->value.related_pid = debug_event_ptid (¤t_event); |
ed50f18f | 1630 | #ifdef _WIN32_WCE |
d97903b2 PA |
1631 | if (!attaching) |
1632 | { | |
1633 | /* Windows CE doesn't set the initial breakpoint | |
1634 | automatically like the desktop versions of Windows do. | |
1635 | We add it explicitly here. It will be removed as soon as | |
1636 | it is hit. */ | |
1637 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1638 | .CreateProcessInfo.lpStartAddress, | |
b65d95c5 | 1639 | auto_delete_breakpoint); |
d97903b2 | 1640 | } |
ed50f18f | 1641 | #endif |
b80864fb DJ |
1642 | break; |
1643 | ||
1644 | case EXIT_PROCESS_DEBUG_EVENT: | |
1645 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1646 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1647 | (unsigned) current_event.dwProcessId, |
1648 | (unsigned) current_event.dwThreadId)); | |
1649 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1650 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
18aae699 | 1651 | child_continue (DBG_CONTINUE, -1); |
b80864fb | 1652 | CloseHandle (current_process_handle); |
9d606399 | 1653 | current_process_handle = NULL; |
b80864fb DJ |
1654 | break; |
1655 | ||
1656 | case LOAD_DLL_DEBUG_EVENT: | |
1657 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1658 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1659 | (unsigned) current_event.dwProcessId, |
1660 | (unsigned) current_event.dwThreadId)); | |
1661 | CloseHandle (current_event.u.LoadDll.hFile); | |
255e7678 | 1662 | handle_load_dll (); |
b80864fb DJ |
1663 | |
1664 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1665 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1666 | break; |
1667 | ||
1668 | case UNLOAD_DLL_DEBUG_EVENT: | |
1669 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1670 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1671 | (unsigned) current_event.dwProcessId, |
1672 | (unsigned) current_event.dwThreadId)); | |
255e7678 DJ |
1673 | handle_unload_dll (); |
1674 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1675 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1676 | break; |
1677 | ||
1678 | case EXCEPTION_DEBUG_EVENT: | |
1679 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
dfe07582 | 1680 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1681 | (unsigned) current_event.dwProcessId, |
1682 | (unsigned) current_event.dwThreadId)); | |
34b34921 | 1683 | handle_exception (ourstatus); |
b80864fb DJ |
1684 | break; |
1685 | ||
1686 | case OUTPUT_DEBUG_STRING_EVENT: | |
1687 | /* A message from the kernel (or Cygwin). */ | |
1688 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
dfe07582 | 1689 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1690 | (unsigned) current_event.dwProcessId, |
1691 | (unsigned) current_event.dwThreadId)); | |
bce7165d | 1692 | handle_output_debug_string (ourstatus); |
b80864fb DJ |
1693 | break; |
1694 | ||
1695 | default: | |
1696 | OUTMSG2 (("gdbserver: kernel event unknown " | |
dfe07582 | 1697 | "for pid=%u tid=%x code=%x\n", |
b80864fb DJ |
1698 | (unsigned) current_event.dwProcessId, |
1699 | (unsigned) current_event.dwThreadId, | |
dfe07582 | 1700 | (unsigned) current_event.dwDebugEventCode)); |
b80864fb DJ |
1701 | break; |
1702 | } | |
1703 | ||
aeeb81d1 | 1704 | ptid = debug_event_ptid (¤t_event); |
b80864fb | 1705 | current_inferior = |
95954743 | 1706 | (struct thread_info *) find_inferior_id (&all_threads, ptid); |
4d5d1aaa | 1707 | return 1; |
b80864fb DJ |
1708 | } |
1709 | ||
1710 | /* Wait for the inferior process to change state. | |
1711 | STATUS will be filled in with a response code to send to GDB. | |
1712 | Returns the signal which caused the process to stop. */ | |
95954743 PA |
1713 | static ptid_t |
1714 | win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, int options) | |
b80864fb | 1715 | { |
442ea881 | 1716 | struct regcache *regcache; |
95954743 | 1717 | |
4210d83e PA |
1718 | if (cached_status.kind != TARGET_WAITKIND_IGNORE) |
1719 | { | |
1720 | /* The core always does a wait after creating the inferior, and | |
1721 | do_initial_child_stuff already ran the inferior to the | |
1722 | initial breakpoint (or an exit, if creating the process | |
1723 | fails). Report it now. */ | |
1724 | *ourstatus = cached_status; | |
1725 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
1726 | return debug_event_ptid (¤t_event); | |
1727 | } | |
1728 | ||
b80864fb DJ |
1729 | while (1) |
1730 | { | |
5b1c542e | 1731 | if (!get_child_debug_event (ourstatus)) |
4d5d1aaa | 1732 | continue; |
b80864fb | 1733 | |
5b1c542e | 1734 | switch (ourstatus->kind) |
b80864fb | 1735 | { |
34b34921 | 1736 | case TARGET_WAITKIND_EXITED: |
b80864fb | 1737 | OUTMSG2 (("Child exited with retcode = %x\n", |
5b1c542e | 1738 | ourstatus->value.integer)); |
5ac588cf | 1739 | win32_clear_inferiors (); |
95954743 | 1740 | return pid_to_ptid (current_event.dwProcessId); |
34b34921 | 1741 | case TARGET_WAITKIND_STOPPED: |
1b3f6016 | 1742 | case TARGET_WAITKIND_LOADED: |
f72f3e60 | 1743 | OUTMSG2 (("Child Stopped with signal = %d \n", |
10357975 | 1744 | ourstatus->value.sig)); |
b80864fb | 1745 | |
442ea881 PA |
1746 | regcache = get_thread_regcache (current_inferior, 1); |
1747 | child_fetch_inferior_registers (regcache, -1); | |
95954743 | 1748 | return debug_event_ptid (¤t_event); |
1b3f6016 | 1749 | default: |
5b1c542e | 1750 | OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind)); |
1b3f6016 PA |
1751 | /* fall-through */ |
1752 | case TARGET_WAITKIND_SPURIOUS: | |
1753 | case TARGET_WAITKIND_EXECD: | |
34b34921 PA |
1754 | /* do nothing, just continue */ |
1755 | child_continue (DBG_CONTINUE, -1); | |
1756 | break; | |
b80864fb | 1757 | } |
b80864fb DJ |
1758 | } |
1759 | } | |
1760 | ||
1761 | /* Fetch registers from the inferior process. | |
1762 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1763 | static void | |
442ea881 | 1764 | win32_fetch_inferior_registers (struct regcache *regcache, int regno) |
b80864fb | 1765 | { |
442ea881 | 1766 | child_fetch_inferior_registers (regcache, regno); |
b80864fb DJ |
1767 | } |
1768 | ||
1769 | /* Store registers to the inferior process. | |
1770 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1771 | static void | |
442ea881 | 1772 | win32_store_inferior_registers (struct regcache *regcache, int regno) |
b80864fb | 1773 | { |
442ea881 | 1774 | child_store_inferior_registers (regcache, regno); |
b80864fb DJ |
1775 | } |
1776 | ||
1777 | /* Read memory from the inferior process. This should generally be | |
1778 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1779 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1780 | static int | |
1781 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1782 | { | |
ed50f18f | 1783 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1784 | } |
1785 | ||
1786 | /* Write memory to the inferior process. This should generally be | |
1787 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1788 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1789 | Returns 0 on success and errno on failure. */ | |
1790 | static int | |
1791 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1792 | int len) | |
1793 | { | |
1794 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1795 | } | |
1796 | ||
7390519e PA |
1797 | /* Send an interrupt request to the inferior process. */ |
1798 | static void | |
1799 | win32_request_interrupt (void) | |
1800 | { | |
1801 | winapi_DebugBreakProcess DebugBreakProcess; | |
1802 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1803 | ||
1804 | #ifdef _WIN32_WCE | |
1805 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1806 | #else | |
1807 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1808 | #endif | |
1809 | ||
1810 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1811 | ||
1812 | if (GenerateConsoleCtrlEvent != NULL | |
1813 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1814 | return; | |
1815 | ||
1816 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1817 | not a process group id. | |
1818 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1819 | breakpoint exception in the interior process. */ | |
1820 | ||
1821 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1822 | ||
1823 | if (DebugBreakProcess != NULL | |
1824 | && DebugBreakProcess (current_process_handle)) | |
1825 | return; | |
1826 | ||
4d5d1aaa PA |
1827 | /* Last resort, suspend all threads manually. */ |
1828 | soft_interrupt_requested = 1; | |
7390519e PA |
1829 | } |
1830 | ||
59a016f0 PA |
1831 | #ifdef _WIN32_WCE |
1832 | int | |
1833 | win32_error_to_fileio_error (DWORD err) | |
1834 | { | |
1835 | switch (err) | |
1836 | { | |
1837 | case ERROR_BAD_PATHNAME: | |
1838 | case ERROR_FILE_NOT_FOUND: | |
1839 | case ERROR_INVALID_NAME: | |
1840 | case ERROR_PATH_NOT_FOUND: | |
1841 | return FILEIO_ENOENT; | |
1842 | case ERROR_CRC: | |
1843 | case ERROR_IO_DEVICE: | |
1844 | case ERROR_OPEN_FAILED: | |
1845 | return FILEIO_EIO; | |
1846 | case ERROR_INVALID_HANDLE: | |
1847 | return FILEIO_EBADF; | |
1848 | case ERROR_ACCESS_DENIED: | |
1849 | case ERROR_SHARING_VIOLATION: | |
1850 | return FILEIO_EACCES; | |
1851 | case ERROR_NOACCESS: | |
1852 | return FILEIO_EFAULT; | |
1853 | case ERROR_BUSY: | |
1854 | return FILEIO_EBUSY; | |
1855 | case ERROR_ALREADY_EXISTS: | |
1856 | case ERROR_FILE_EXISTS: | |
1857 | return FILEIO_EEXIST; | |
1858 | case ERROR_BAD_DEVICE: | |
1859 | return FILEIO_ENODEV; | |
1860 | case ERROR_DIRECTORY: | |
1861 | return FILEIO_ENOTDIR; | |
1862 | case ERROR_FILENAME_EXCED_RANGE: | |
1863 | case ERROR_INVALID_DATA: | |
1864 | case ERROR_INVALID_PARAMETER: | |
1865 | case ERROR_NEGATIVE_SEEK: | |
1866 | return FILEIO_EINVAL; | |
1867 | case ERROR_TOO_MANY_OPEN_FILES: | |
1868 | return FILEIO_EMFILE; | |
1869 | case ERROR_HANDLE_DISK_FULL: | |
1870 | case ERROR_DISK_FULL: | |
1871 | return FILEIO_ENOSPC; | |
1872 | case ERROR_WRITE_PROTECT: | |
1873 | return FILEIO_EROFS; | |
1874 | case ERROR_NOT_SUPPORTED: | |
1875 | return FILEIO_ENOSYS; | |
1876 | } | |
1877 | ||
1878 | return FILEIO_EUNKNOWN; | |
1879 | } | |
1880 | ||
1881 | static void | |
1882 | wince_hostio_last_error (char *buf) | |
1883 | { | |
1884 | DWORD winerr = GetLastError (); | |
1885 | int fileio_err = win32_error_to_fileio_error (winerr); | |
1886 | sprintf (buf, "F-1,%x", fileio_err); | |
1887 | } | |
1888 | #endif | |
1889 | ||
711e434b PM |
1890 | /* Write Windows OS Thread Information Block address. */ |
1891 | ||
1892 | static int | |
1893 | win32_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
1894 | { | |
1895 | win32_thread_info *th; | |
1896 | th = thread_rec (ptid, 0); | |
1897 | if (th == NULL) | |
1898 | return 0; | |
1899 | if (addr != NULL) | |
1900 | *addr = th->thread_local_base; | |
1901 | return 1; | |
1902 | } | |
1903 | ||
b80864fb DJ |
1904 | static struct target_ops win32_target_ops = { |
1905 | win32_create_inferior, | |
1906 | win32_attach, | |
1907 | win32_kill, | |
1908 | win32_detach, | |
505106cd | 1909 | win32_mourn, |
444d6139 | 1910 | win32_join, |
b80864fb DJ |
1911 | win32_thread_alive, |
1912 | win32_resume, | |
1913 | win32_wait, | |
1914 | win32_fetch_inferior_registers, | |
1915 | win32_store_inferior_registers, | |
90d74c30 | 1916 | NULL, /* prepare_to_access_memory */ |
0146f85b | 1917 | NULL, /* done_accessing_memory */ |
b80864fb DJ |
1918 | win32_read_inferior_memory, |
1919 | win32_write_inferior_memory, | |
711e434b | 1920 | NULL, /* lookup_symbols */ |
7390519e | 1921 | win32_request_interrupt, |
711e434b | 1922 | NULL, /* read_auxv */ |
aa5ca48f DE |
1923 | win32_insert_point, |
1924 | win32_remove_point, | |
1925 | win32_stopped_by_watchpoint, | |
1926 | win32_stopped_data_address, | |
711e434b PM |
1927 | NULL, /* read_offsets */ |
1928 | NULL, /* get_tls_address */ | |
1929 | NULL, /* qxfer_spu */ | |
59a016f0 PA |
1930 | #ifdef _WIN32_WCE |
1931 | wince_hostio_last_error, | |
1932 | #else | |
1933 | hostio_last_error_from_errno, | |
1934 | #endif | |
711e434b PM |
1935 | NULL, /* qxfer_osdata */ |
1936 | NULL, /* qxfer_siginfo */ | |
1937 | NULL, /* supports_non_stop */ | |
1938 | NULL, /* async */ | |
1939 | NULL, /* start_non_stop */ | |
1940 | NULL, /* supports_multi_process */ | |
1941 | NULL, /* handle_monitor_command */ | |
1942 | NULL, /* core_of_thread */ | |
881127c9 | 1943 | NULL, /* read_loadmap */ |
711e434b PM |
1944 | NULL, /* process_qsupported */ |
1945 | NULL, /* supports_tracepoints */ | |
1946 | NULL, /* read_pc */ | |
1947 | NULL, /* write_pc */ | |
1948 | NULL, /* thread_stopped */ | |
7984d532 | 1949 | win32_get_tib_address |
b80864fb DJ |
1950 | }; |
1951 | ||
1952 | /* Initialize the Win32 backend. */ | |
1953 | void | |
1954 | initialize_low (void) | |
1955 | { | |
1956 | set_target_ops (&win32_target_ops); | |
ed50f18f PA |
1957 | if (the_low_target.breakpoint != NULL) |
1958 | set_breakpoint_data (the_low_target.breakpoint, | |
1959 | the_low_target.breakpoint_len); | |
d05b4ac3 | 1960 | the_low_target.arch_setup (); |
b80864fb | 1961 | } |