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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 | ||
b80864fb DJ |
376 | /* Start a new process. |
377 | PROGRAM is a path to the program to execute. | |
378 | ARGS is a standard NULL-terminated array of arguments, | |
379 | to be passed to the inferior as ``argv''. | |
380 | Returns the new PID on success, -1 on failure. Registers the new | |
381 | process with the process list. */ | |
382 | static int | |
383 | win32_create_inferior (char *program, char **program_args) | |
384 | { | |
385 | #ifndef USE_WIN32API | |
386 | char real_path[MAXPATHLEN]; | |
387 | char *orig_path, *new_path, *path_ptr; | |
388 | #endif | |
b80864fb DJ |
389 | BOOL ret; |
390 | DWORD flags; | |
391 | char *args; | |
392 | int argslen; | |
393 | int argc; | |
ed50f18f PA |
394 | PROCESS_INFORMATION pi; |
395 | #ifndef __MINGW32CE__ | |
bf914831 | 396 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; |
ed50f18f PA |
397 | char *winenv = NULL; |
398 | #else | |
399 | wchar_t *wargs, *wprogram; | |
400 | #endif | |
b80864fb DJ |
401 | |
402 | if (!program) | |
403 | error ("No executable specified, specify executable to debug.\n"); | |
404 | ||
b80864fb DJ |
405 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
406 | ||
407 | #ifndef USE_WIN32API | |
408 | orig_path = NULL; | |
409 | path_ptr = getenv ("PATH"); | |
410 | if (path_ptr) | |
411 | { | |
412 | orig_path = alloca (strlen (path_ptr) + 1); | |
413 | new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr)); | |
414 | strcpy (orig_path, path_ptr); | |
415 | cygwin_posix_to_win32_path_list (path_ptr, new_path); | |
416 | setenv ("PATH", new_path, 1); | |
417 | } | |
418 | cygwin_conv_to_win32_path (program, real_path); | |
419 | program = real_path; | |
420 | #endif | |
421 | ||
ed50f18f | 422 | argslen = 1; |
b80864fb DJ |
423 | for (argc = 1; program_args[argc]; argc++) |
424 | argslen += strlen (program_args[argc]) + 1; | |
425 | args = alloca (argslen); | |
ed50f18f | 426 | args[0] = '\0'; |
b80864fb DJ |
427 | for (argc = 1; program_args[argc]; argc++) |
428 | { | |
429 | /* FIXME: Can we do better about quoting? How does Cygwin | |
430 | handle this? */ | |
431 | strcat (args, " "); | |
432 | strcat (args, program_args[argc]); | |
433 | } | |
ed50f18f | 434 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 435 | |
ed50f18f | 436 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 437 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 438 | #endif |
b80864fb | 439 | |
ed50f18f PA |
440 | #ifdef __MINGW32CE__ |
441 | to_back_slashes (program); | |
442 | wargs = alloca (argslen * sizeof (wchar_t)); | |
443 | mbstowcs (wargs, args, argslen); | |
444 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
445 | mbstowcs (wprogram, program, strlen (program) + 1); | |
446 | ret = CreateProcessW (wprogram, /* image name */ | |
447 | wargs, /* command line */ | |
448 | NULL, /* security, not supported */ | |
449 | NULL, /* thread, not supported */ | |
450 | FALSE, /* inherit handles, not supported */ | |
451 | flags, /* start flags */ | |
452 | NULL, /* environment, not supported */ | |
453 | NULL, /* current directory, not supported */ | |
454 | NULL, /* start info, not supported */ | |
455 | &pi); /* proc info */ | |
456 | #else | |
bf914831 PA |
457 | ret = CreateProcessA (program, /* image name */ |
458 | args, /* command line */ | |
459 | NULL, /* security */ | |
460 | NULL, /* thread */ | |
461 | TRUE, /* inherit handles */ | |
462 | flags, /* start flags */ | |
463 | winenv, /* environment */ | |
464 | NULL, /* current directory */ | |
465 | &si, /* start info */ | |
466 | &pi); /* proc info */ | |
ed50f18f | 467 | #endif |
b80864fb DJ |
468 | |
469 | #ifndef USE_WIN32API | |
470 | if (orig_path) | |
471 | setenv ("PATH", orig_path, 1); | |
472 | #endif | |
473 | ||
474 | if (!ret) | |
475 | { | |
ed50f18f PA |
476 | DWORD err = GetLastError (); |
477 | error ("Error creating process \"%s%s\", (error %d): %s\n", | |
478 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
479 | } |
480 | else | |
481 | { | |
482 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
483 | } | |
484 | ||
ed50f18f PA |
485 | #ifndef _WIN32_WCE |
486 | /* On Windows CE this handle can't be closed. The OS reuses | |
487 | it in the debug events, while the 9x/NT versions of Windows | |
488 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 489 | CloseHandle (pi.hThread); |
ed50f18f | 490 | #endif |
b80864fb DJ |
491 | |
492 | current_process_handle = pi.hProcess; | |
493 | current_process_id = pi.dwProcessId; | |
494 | ||
495 | do_initial_child_stuff (current_process_id); | |
496 | ||
497 | return current_process_id; | |
498 | } | |
499 | ||
500 | /* Attach to a running process. | |
501 | PID is the process ID to attach to, specified by the user | |
502 | or a higher layer. */ | |
503 | static int | |
504 | win32_attach (unsigned long pid) | |
505 | { | |
bf914831 PA |
506 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
507 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
508 | #ifdef _WIN32_WCE |
509 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
510 | #else | |
511 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
512 | #endif | |
bf914831 PA |
513 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
514 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 515 | |
1d5315fe PA |
516 | if (DebugActiveProcess (pid)) |
517 | { | |
518 | if (DebugSetProcessKillOnExit != NULL) | |
519 | DebugSetProcessKillOnExit (FALSE); | |
b80864fb | 520 | |
1d5315fe | 521 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
b80864fb | 522 | |
1d5315fe PA |
523 | if (current_process_handle != NULL) |
524 | { | |
525 | current_process_id = pid; | |
526 | do_initial_child_stuff (pid); | |
527 | return 0; | |
528 | } | |
b80864fb DJ |
529 | if (DebugActiveProcessStop != NULL) |
530 | DebugActiveProcessStop (current_process_id); | |
531 | } | |
532 | ||
1d5315fe | 533 | error ("Attach to process failed."); |
b80864fb DJ |
534 | } |
535 | ||
bce7165d PA |
536 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
537 | static void | |
538 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
539 | { | |
540 | #define READ_BUFFER_LEN 1024 | |
541 | CORE_ADDR addr; | |
542 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
543 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
544 | ||
545 | if (nbytes == 0) | |
546 | return; | |
547 | ||
548 | if (nbytes > READ_BUFFER_LEN) | |
549 | nbytes = READ_BUFFER_LEN; | |
550 | ||
551 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
552 | ||
553 | if (current_event.u.DebugString.fUnicode) | |
554 | { | |
555 | /* The event tells us how many bytes, not chars, even | |
556 | in Unicode. */ | |
557 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; | |
558 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
559 | return; | |
560 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
561 | } | |
562 | else | |
563 | { | |
564 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
565 | return; | |
566 | } | |
567 | ||
568 | if (strncmp (s, "cYg", 3) != 0) | |
45e2715e PA |
569 | { |
570 | if (!server_waiting) | |
571 | { | |
572 | OUTMSG2(("%s", s)); | |
573 | return; | |
574 | } | |
575 | ||
576 | monitor_output (s); | |
577 | } | |
bce7165d PA |
578 | #undef READ_BUFFER_LEN |
579 | } | |
580 | ||
b80864fb DJ |
581 | /* Kill all inferiors. */ |
582 | static void | |
583 | win32_kill (void) | |
584 | { | |
ed50f18f PA |
585 | win32_thread_info *current_thread; |
586 | ||
9d606399 DJ |
587 | if (current_process_handle == NULL) |
588 | return; | |
589 | ||
b80864fb DJ |
590 | TerminateProcess (current_process_handle, 0); |
591 | for (;;) | |
592 | { | |
593 | if (!child_continue (DBG_CONTINUE, -1)) | |
594 | break; | |
595 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
596 | break; | |
597 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
598 | break; | |
bce7165d PA |
599 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
600 | { | |
601 | struct target_waitstatus our_status = { 0 }; | |
602 | handle_output_debug_string (&our_status); | |
603 | } | |
b80864fb | 604 | } |
ed50f18f PA |
605 | |
606 | CloseHandle (current_process_handle); | |
607 | ||
608 | current_thread = inferior_target_data (current_inferior); | |
609 | if (current_thread && current_thread->h) | |
610 | { | |
611 | /* This may fail in an attached process, so don't check. */ | |
612 | (void) CloseHandle (current_thread->h); | |
613 | } | |
b80864fb DJ |
614 | } |
615 | ||
616 | /* Detach from all inferiors. */ | |
444d6139 | 617 | static int |
b80864fb DJ |
618 | win32_detach (void) |
619 | { | |
444d6139 PA |
620 | HANDLE h; |
621 | ||
bf914831 PA |
622 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
623 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
624 | #ifdef _WIN32_WCE |
625 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
626 | #else | |
627 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
628 | #endif | |
bf914831 PA |
629 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
630 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 631 | |
444d6139 PA |
632 | if (DebugSetProcessKillOnExit == NULL |
633 | || DebugActiveProcessStop == NULL) | |
634 | return -1; | |
b80864fb | 635 | |
444d6139 PA |
636 | /* We need a new handle, since DebugActiveProcessStop |
637 | closes all the ones that came through the events. */ | |
638 | if ((h = OpenProcess (PROCESS_ALL_ACCESS, | |
639 | FALSE, | |
640 | current_process_id)) == NULL) | |
641 | { | |
642 | /* The process died. */ | |
643 | return -1; | |
644 | } | |
645 | ||
646 | { | |
647 | struct thread_resume resume; | |
648 | resume.thread = -1; | |
649 | resume.step = 0; | |
650 | resume.sig = 0; | |
651 | resume.leave_stopped = 0; | |
652 | win32_resume (&resume); | |
653 | } | |
654 | ||
655 | if (!DebugActiveProcessStop (current_process_id)) | |
656 | { | |
657 | CloseHandle (h); | |
658 | return -1; | |
659 | } | |
660 | DebugSetProcessKillOnExit (FALSE); | |
661 | ||
662 | current_process_handle = h; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | /* Wait for inferiors to end. */ | |
667 | static void | |
668 | win32_join (void) | |
669 | { | |
670 | if (current_process_id == 0 | |
671 | || current_process_handle == NULL) | |
672 | return; | |
673 | ||
674 | WaitForSingleObject (current_process_handle, INFINITE); | |
675 | CloseHandle (current_process_handle); | |
676 | ||
677 | current_process_handle = NULL; | |
678 | current_process_id = 0; | |
b80864fb DJ |
679 | } |
680 | ||
681 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
682 | static int | |
683 | win32_thread_alive (unsigned long tid) | |
684 | { | |
685 | int res; | |
686 | ||
687 | /* Our thread list is reliable; don't bother to poll target | |
688 | threads. */ | |
689 | if (find_inferior_id (&all_threads, tid) != NULL) | |
690 | res = 1; | |
691 | else | |
692 | res = 0; | |
693 | return res; | |
694 | } | |
695 | ||
696 | /* Resume the inferior process. RESUME_INFO describes how we want | |
697 | to resume. */ | |
698 | static void | |
699 | win32_resume (struct thread_resume *resume_info) | |
700 | { | |
701 | DWORD tid; | |
702 | enum target_signal sig; | |
703 | int step; | |
41093d81 | 704 | win32_thread_info *th; |
b80864fb DJ |
705 | DWORD continue_status = DBG_CONTINUE; |
706 | ||
707 | /* This handles the very limited set of resume packets that GDB can | |
708 | currently produce. */ | |
709 | ||
710 | if (resume_info[0].thread == -1) | |
711 | tid = -1; | |
712 | else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped) | |
713 | tid = -1; | |
714 | else | |
715 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
716 | the Windows resume code do the right thing for thread switching. */ | |
717 | tid = current_event.dwThreadId; | |
718 | ||
719 | if (resume_info[0].thread != -1) | |
720 | { | |
721 | sig = resume_info[0].sig; | |
722 | step = resume_info[0].step; | |
723 | } | |
724 | else | |
725 | { | |
726 | sig = 0; | |
727 | step = 0; | |
728 | } | |
729 | ||
730 | if (sig != TARGET_SIGNAL_0) | |
731 | { | |
732 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
733 | { | |
734 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); | |
735 | } | |
736 | else if (sig == last_sig) | |
737 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
738 | else | |
739 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); | |
740 | } | |
741 | ||
742 | last_sig = TARGET_SIGNAL_0; | |
743 | ||
744 | /* Get context for the currently selected thread. */ | |
745 | th = thread_rec (current_event.dwThreadId, FALSE); | |
746 | if (th) | |
747 | { | |
748 | if (th->context.ContextFlags) | |
749 | { | |
b80864fb DJ |
750 | /* Move register values from the inferior into the thread |
751 | context structure. */ | |
752 | regcache_invalidate (); | |
753 | ||
754 | if (step) | |
ed50f18f PA |
755 | { |
756 | if (the_low_target.single_step != NULL) | |
757 | (*the_low_target.single_step) (th); | |
758 | else | |
759 | error ("Single stepping is not supported " | |
760 | "in this configuration.\n"); | |
761 | } | |
34b34921 PA |
762 | |
763 | (*the_low_target.set_thread_context) (th, ¤t_event); | |
b80864fb DJ |
764 | th->context.ContextFlags = 0; |
765 | } | |
766 | } | |
767 | ||
768 | /* Allow continuing with the same signal that interrupted us. | |
769 | Otherwise complain. */ | |
770 | ||
771 | child_continue (continue_status, tid); | |
772 | } | |
773 | ||
255e7678 DJ |
774 | static void |
775 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
776 | { | |
777 | char buf[MAX_PATH + 1]; | |
778 | char buf2[MAX_PATH + 1]; | |
779 | ||
780 | #ifdef _WIN32_WCE | |
781 | WIN32_FIND_DATA w32_fd; | |
782 | WCHAR wname[MAX_PATH + 1]; | |
783 | mbstowcs (wname, name, MAX_PATH); | |
784 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
785 | #else | |
786 | WIN32_FIND_DATAA w32_fd; | |
787 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
788 | #endif | |
789 | ||
790 | if (h == INVALID_HANDLE_VALUE) | |
791 | strcpy (buf, name); | |
792 | else | |
793 | { | |
794 | FindClose (h); | |
795 | strcpy (buf, name); | |
796 | #ifndef _WIN32_WCE | |
797 | { | |
798 | char cwd[MAX_PATH + 1]; | |
799 | char *p; | |
800 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
801 | { | |
802 | p = strrchr (buf, '\\'); | |
803 | if (p) | |
804 | p[1] = '\0'; | |
805 | SetCurrentDirectoryA (buf); | |
806 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
807 | SetCurrentDirectoryA (cwd); | |
808 | } | |
809 | } | |
810 | #endif | |
811 | } | |
812 | ||
813 | #ifdef __CYGWIN__ | |
814 | cygwin_conv_to_posix_path (buf, buf2); | |
815 | #else | |
816 | strcpy (buf2, buf); | |
817 | #endif | |
818 | ||
819 | loaded_dll (buf2, load_addr); | |
820 | } | |
821 | ||
822 | static char * | |
823 | get_image_name (HANDLE h, void *address, int unicode) | |
824 | { | |
825 | static char buf[(2 * MAX_PATH) + 1]; | |
826 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
827 | char *address_ptr; | |
828 | int len = 0; | |
829 | char b[2]; | |
830 | DWORD done; | |
831 | ||
832 | /* Attempt to read the name of the dll that was detected. | |
833 | This is documented to work only when actively debugging | |
834 | a program. It will not work for attached processes. */ | |
835 | if (address == NULL) | |
836 | return NULL; | |
837 | ||
838 | #ifdef _WIN32_WCE | |
839 | /* Windows CE reports the address of the image name, | |
840 | instead of an address of a pointer into the image name. */ | |
841 | address_ptr = address; | |
842 | #else | |
843 | /* See if we could read the address of a string, and that the | |
844 | address isn't null. */ | |
845 | if (!ReadProcessMemory (h, address, &address_ptr, | |
846 | sizeof (address_ptr), &done) | |
847 | || done != sizeof (address_ptr) | |
848 | || !address_ptr) | |
849 | return NULL; | |
850 | #endif | |
851 | ||
852 | /* Find the length of the string */ | |
853 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) | |
854 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
855 | continue; | |
856 | ||
857 | if (!unicode) | |
858 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
859 | else | |
860 | { | |
861 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); | |
862 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), | |
863 | &done); | |
864 | ||
865 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
866 | } | |
867 | ||
868 | return buf; | |
869 | } | |
870 | ||
871 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, | |
872 | DWORD, LPDWORD); | |
873 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, | |
874 | LPMODULEINFO, DWORD); | |
875 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
876 | LPSTR, DWORD); | |
877 | ||
878 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
879 | static winapi_GetModuleInformation win32_GetModuleInformation; | |
880 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
881 | ||
882 | static BOOL | |
883 | load_psapi (void) | |
884 | { | |
885 | static int psapi_loaded = 0; | |
886 | static HMODULE dll = NULL; | |
887 | ||
888 | if (!psapi_loaded) | |
889 | { | |
890 | psapi_loaded = 1; | |
891 | dll = LoadLibrary (TEXT("psapi.dll")); | |
892 | if (!dll) | |
893 | return FALSE; | |
894 | win32_EnumProcessModules = | |
895 | GETPROCADDRESS (dll, EnumProcessModules); | |
896 | win32_GetModuleInformation = | |
897 | GETPROCADDRESS (dll, GetModuleInformation); | |
898 | win32_GetModuleFileNameExA = | |
899 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
900 | } | |
901 | ||
902 | return (win32_EnumProcessModules != NULL | |
903 | && win32_GetModuleInformation != NULL | |
904 | && win32_GetModuleFileNameExA != NULL); | |
905 | } | |
906 | ||
907 | static int | |
908 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
909 | { | |
910 | DWORD len; | |
911 | MODULEINFO mi; | |
912 | size_t i; | |
913 | HMODULE dh_buf[1]; | |
914 | HMODULE *DllHandle = dh_buf; | |
915 | DWORD cbNeeded; | |
916 | BOOL ok; | |
917 | ||
918 | if (!load_psapi ()) | |
919 | goto failed; | |
920 | ||
921 | cbNeeded = 0; | |
922 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
923 | DllHandle, | |
924 | sizeof (HMODULE), | |
925 | &cbNeeded); | |
926 | ||
927 | if (!ok || !cbNeeded) | |
928 | goto failed; | |
929 | ||
930 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
931 | if (!DllHandle) | |
932 | goto failed; | |
933 | ||
934 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
935 | DllHandle, | |
936 | cbNeeded, | |
937 | &cbNeeded); | |
938 | if (!ok) | |
939 | goto failed; | |
940 | ||
941 | for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) | |
942 | { | |
943 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
944 | DllHandle[i], | |
945 | &mi, | |
946 | sizeof (mi))) | |
947 | { | |
948 | DWORD err = GetLastError (); | |
949 | error ("Can't get module info: (error %d): %s\n", | |
950 | (int) err, strwinerror (err)); | |
951 | } | |
952 | ||
953 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) | |
954 | { | |
955 | len = (*win32_GetModuleFileNameExA) (current_process_handle, | |
956 | DllHandle[i], | |
957 | dll_name_ret, | |
958 | MAX_PATH); | |
959 | if (len == 0) | |
960 | { | |
961 | DWORD err = GetLastError (); | |
962 | error ("Error getting dll name: (error %d): %s\n", | |
963 | (int) err, strwinerror (err)); | |
964 | } | |
965 | return 1; | |
966 | } | |
967 | } | |
968 | ||
969 | failed: | |
970 | dll_name_ret[0] = '\0'; | |
971 | return 0; | |
972 | } | |
973 | ||
974 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); | |
975 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
976 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
977 | ||
978 | static winapi_CreateToolhelp32Snapshot win32_CreateToolhelp32Snapshot; | |
979 | static winapi_Module32First win32_Module32First; | |
980 | static winapi_Module32Next win32_Module32Next; | |
6b3d9b83 PA |
981 | #ifdef _WIN32_WCE |
982 | typedef BOOL (WINAPI *winapi_CloseToolhelp32Snapshot) (HANDLE); | |
983 | static winapi_CloseToolhelp32Snapshot win32_CloseToolhelp32Snapshot; | |
984 | #endif | |
255e7678 DJ |
985 | |
986 | static BOOL | |
987 | load_toolhelp (void) | |
988 | { | |
989 | static int toolhelp_loaded = 0; | |
990 | static HMODULE dll = NULL; | |
991 | ||
992 | if (!toolhelp_loaded) | |
993 | { | |
994 | toolhelp_loaded = 1; | |
995 | #ifndef _WIN32_WCE | |
996 | dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
997 | #else | |
6b3d9b83 | 998 | dll = LoadLibrary (L"TOOLHELP.DLL"); |
255e7678 DJ |
999 | #endif |
1000 | if (!dll) | |
1001 | return FALSE; | |
1002 | ||
1003 | win32_CreateToolhelp32Snapshot = | |
1004 | GETPROCADDRESS (dll, CreateToolhelp32Snapshot); | |
1005 | win32_Module32First = GETPROCADDRESS (dll, Module32First); | |
1006 | win32_Module32Next = GETPROCADDRESS (dll, Module32Next); | |
6b3d9b83 PA |
1007 | #ifdef _WIN32_WCE |
1008 | win32_CloseToolhelp32Snapshot = | |
1009 | GETPROCADDRESS (dll, CloseToolhelp32Snapshot); | |
1010 | #endif | |
255e7678 DJ |
1011 | } |
1012 | ||
1013 | return (win32_CreateToolhelp32Snapshot != NULL | |
1014 | && win32_Module32First != NULL | |
6b3d9b83 PA |
1015 | && win32_Module32Next != NULL |
1016 | #ifdef _WIN32_WCE | |
1017 | && win32_CloseToolhelp32Snapshot != NULL | |
1018 | #endif | |
1019 | ); | |
255e7678 DJ |
1020 | } |
1021 | ||
1022 | static int | |
1023 | toolhelp_get_dll_name (DWORD BaseAddress, char *dll_name_ret) | |
1024 | { | |
1025 | HANDLE snapshot_module; | |
1026 | MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) }; | |
6b3d9b83 | 1027 | int found = 0; |
255e7678 DJ |
1028 | |
1029 | if (!load_toolhelp ()) | |
1030 | return 0; | |
1031 | ||
1032 | snapshot_module = win32_CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, | |
1033 | current_event.dwProcessId); | |
1034 | if (snapshot_module == INVALID_HANDLE_VALUE) | |
1035 | return 0; | |
1036 | ||
1037 | /* Ignore the first module, which is the exe. */ | |
6b3d9b83 PA |
1038 | if (win32_Module32First (snapshot_module, &modEntry)) |
1039 | while (win32_Module32Next (snapshot_module, &modEntry)) | |
1040 | if ((DWORD) modEntry.modBaseAddr == BaseAddress) | |
1041 | { | |
255e7678 | 1042 | #ifdef UNICODE |
6b3d9b83 | 1043 | wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1); |
255e7678 | 1044 | #else |
6b3d9b83 | 1045 | strcpy (dll_name_ret, modEntry.szExePath); |
255e7678 | 1046 | #endif |
6b3d9b83 PA |
1047 | found = 1; |
1048 | break; | |
1049 | } | |
255e7678 | 1050 | |
6b3d9b83 PA |
1051 | #ifdef _WIN32_WCE |
1052 | win32_CloseToolhelp32Snapshot (snapshot_module); | |
1053 | #else | |
255e7678 | 1054 | CloseHandle (snapshot_module); |
6b3d9b83 PA |
1055 | #endif |
1056 | return found; | |
255e7678 DJ |
1057 | } |
1058 | ||
1059 | static void | |
1060 | handle_load_dll (void) | |
1061 | { | |
1062 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
1063 | char dll_buf[MAX_PATH + 1]; | |
1064 | char *dll_name = NULL; | |
1065 | DWORD load_addr; | |
1066 | ||
1067 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; | |
1068 | ||
1069 | if (!psapi_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf) | |
1070 | && !toolhelp_get_dll_name ((DWORD) (event->lpBaseOfDll), dll_buf)) | |
1071 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; | |
1072 | ||
1073 | dll_name = dll_buf; | |
1074 | ||
1075 | if (*dll_name == '\0') | |
1076 | dll_name = get_image_name (current_process_handle, | |
1077 | event->lpImageName, event->fUnicode); | |
1078 | if (!dll_name) | |
1079 | return; | |
1080 | ||
1081 | /* The symbols in a dll are offset by 0x1000, which is the | |
1082 | the offset from 0 of the first byte in an image - because | |
1083 | of the file header and the section alignment. */ | |
1084 | ||
1085 | load_addr = (DWORD) event->lpBaseOfDll + 0x1000; | |
1086 | win32_add_one_solib (dll_name, load_addr); | |
1087 | } | |
1088 | ||
1089 | static void | |
1090 | handle_unload_dll (void) | |
1091 | { | |
1092 | CORE_ADDR load_addr = | |
1093 | (CORE_ADDR) (DWORD) current_event.u.UnloadDll.lpBaseOfDll; | |
1094 | load_addr += 0x1000; | |
1095 | unloaded_dll (NULL, load_addr); | |
1096 | } | |
1097 | ||
34b34921 | 1098 | static void |
b80864fb DJ |
1099 | handle_exception (struct target_waitstatus *ourstatus) |
1100 | { | |
b80864fb DJ |
1101 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
1102 | ||
1103 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1104 | ||
b80864fb DJ |
1105 | switch (code) |
1106 | { | |
1107 | case EXCEPTION_ACCESS_VIOLATION: | |
1108 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
1109 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
1110 | break; | |
1111 | case STATUS_STACK_OVERFLOW: | |
1112 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
1113 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
1114 | break; | |
1115 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1116 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
1117 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1118 | break; | |
1119 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1120 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
1121 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1122 | break; | |
1123 | case STATUS_FLOAT_INEXACT_RESULT: | |
1124 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
1125 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1126 | break; | |
1127 | case STATUS_FLOAT_INVALID_OPERATION: | |
1128 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
1129 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1130 | break; | |
1131 | case STATUS_FLOAT_OVERFLOW: | |
1132 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
1133 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1134 | break; | |
1135 | case STATUS_FLOAT_STACK_CHECK: | |
1136 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
1137 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1138 | break; | |
1139 | case STATUS_FLOAT_UNDERFLOW: | |
1140 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
1141 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1142 | break; | |
1143 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
1144 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
1145 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1146 | break; | |
1147 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
1148 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
1149 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1150 | break; | |
1151 | case STATUS_INTEGER_OVERFLOW: | |
1152 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
1153 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
1154 | break; | |
1155 | case EXCEPTION_BREAKPOINT: | |
1156 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
1157 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
ed50f18f PA |
1158 | #ifdef _WIN32_WCE |
1159 | /* Remove the initial breakpoint. */ | |
1160 | check_breakpoints ((CORE_ADDR) (long) current_event | |
1161 | .u.Exception.ExceptionRecord.ExceptionAddress); | |
1162 | #endif | |
b80864fb DJ |
1163 | break; |
1164 | case DBG_CONTROL_C: | |
1165 | OUTMSG2 (("DBG_CONTROL_C")); | |
1166 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
1167 | break; | |
1168 | case DBG_CONTROL_BREAK: | |
1169 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
1170 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
1171 | break; | |
1172 | case EXCEPTION_SINGLE_STEP: | |
1173 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
1174 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
1175 | break; | |
1176 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
1177 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
1178 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1179 | break; | |
1180 | case EXCEPTION_PRIV_INSTRUCTION: | |
1181 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
1182 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1183 | break; | |
1184 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1185 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
1186 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
1187 | break; | |
1188 | default: | |
1189 | if (current_event.u.Exception.dwFirstChance) | |
34b34921 PA |
1190 | { |
1191 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1192 | return; | |
1193 | } | |
b80864fb DJ |
1194 | OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx", |
1195 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1196 | (DWORD) current_event.u.Exception.ExceptionRecord. | |
1197 | ExceptionAddress)); | |
1198 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
1199 | break; | |
1200 | } | |
1201 | OUTMSG2 (("\n")); | |
1202 | last_sig = ourstatus->value.sig; | |
b80864fb DJ |
1203 | } |
1204 | ||
34b34921 PA |
1205 | /* Get the next event from the child. */ |
1206 | static void | |
b80864fb DJ |
1207 | get_child_debug_event (struct target_waitstatus *ourstatus) |
1208 | { | |
1209 | BOOL debug_event; | |
b80864fb DJ |
1210 | |
1211 | last_sig = TARGET_SIGNAL_0; | |
1212 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1213 | ||
7390519e PA |
1214 | /* Keep the wait time low enough for confortable remote interruption, |
1215 | but high enough so gdbserver doesn't become a bottleneck. */ | |
1216 | if (!(debug_event = WaitForDebugEvent (¤t_event, 250))) | |
34b34921 | 1217 | return; |
b80864fb DJ |
1218 | |
1219 | current_inferior = | |
1220 | (struct thread_info *) find_inferior_id (&all_threads, | |
1221 | current_event.dwThreadId); | |
1222 | ||
34b34921 | 1223 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1224 | { |
1225 | case CREATE_THREAD_DEBUG_EVENT: | |
1226 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
1227 | "for pid=%d tid=%x)\n", | |
1228 | (unsigned) current_event.dwProcessId, | |
1229 | (unsigned) current_event.dwThreadId)); | |
1230 | ||
1231 | /* Record the existence of this thread. */ | |
34b34921 | 1232 | child_add_thread (current_event.dwThreadId, |
b80864fb | 1233 | current_event.u.CreateThread.hThread); |
b80864fb DJ |
1234 | break; |
1235 | ||
1236 | case EXIT_THREAD_DEBUG_EVENT: | |
1237 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
1238 | "for pid=%d tid=%x\n", | |
1239 | (unsigned) current_event.dwProcessId, | |
1240 | (unsigned) current_event.dwThreadId)); | |
1241 | child_delete_thread (current_event.dwThreadId); | |
b80864fb DJ |
1242 | break; |
1243 | ||
1244 | case CREATE_PROCESS_DEBUG_EVENT: | |
1245 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
1246 | "for pid=%d tid=%x\n", | |
1247 | (unsigned) current_event.dwProcessId, | |
1248 | (unsigned) current_event.dwThreadId)); | |
1249 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1250 | ||
1251 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1252 | main_thread_id = current_event.dwThreadId; | |
1253 | ||
1254 | ourstatus->kind = TARGET_WAITKIND_EXECD; | |
1255 | ourstatus->value.execd_pathname = "Main executable"; | |
1256 | ||
1257 | /* Add the main thread. */ | |
34b34921 PA |
1258 | child_add_thread (main_thread_id, |
1259 | current_event.u.CreateProcessInfo.hThread); | |
b80864fb | 1260 | |
34b34921 | 1261 | ourstatus->value.related_pid = current_event.dwThreadId; |
ed50f18f PA |
1262 | #ifdef _WIN32_WCE |
1263 | /* Windows CE doesn't set the initial breakpoint automatically | |
1264 | like the desktop versions of Windows do. We add it explicitly | |
1265 | here. It will be removed as soon as it is hit. */ | |
1266 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1267 | .CreateProcessInfo.lpStartAddress, | |
1268 | delete_breakpoint_at); | |
1269 | #endif | |
b80864fb DJ |
1270 | break; |
1271 | ||
1272 | case EXIT_PROCESS_DEBUG_EVENT: | |
1273 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
1274 | "for pid=%d tid=%x\n", | |
1275 | (unsigned) current_event.dwProcessId, | |
1276 | (unsigned) current_event.dwThreadId)); | |
1277 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1278 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1279 | CloseHandle (current_process_handle); | |
9d606399 | 1280 | current_process_handle = NULL; |
b80864fb DJ |
1281 | break; |
1282 | ||
1283 | case LOAD_DLL_DEBUG_EVENT: | |
1284 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
1285 | "for pid=%d tid=%x\n", | |
1286 | (unsigned) current_event.dwProcessId, | |
1287 | (unsigned) current_event.dwThreadId)); | |
1288 | CloseHandle (current_event.u.LoadDll.hFile); | |
255e7678 | 1289 | handle_load_dll (); |
b80864fb DJ |
1290 | |
1291 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
255e7678 | 1292 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
b80864fb DJ |
1293 | break; |
1294 | ||
1295 | case UNLOAD_DLL_DEBUG_EVENT: | |
1296 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
1297 | "for pid=%d tid=%x\n", | |
1298 | (unsigned) current_event.dwProcessId, | |
1299 | (unsigned) current_event.dwThreadId)); | |
255e7678 DJ |
1300 | handle_unload_dll (); |
1301 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
1302 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
b80864fb DJ |
1303 | break; |
1304 | ||
1305 | case EXCEPTION_DEBUG_EVENT: | |
1306 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
1307 | "for pid=%d tid=%x\n", | |
1308 | (unsigned) current_event.dwProcessId, | |
1309 | (unsigned) current_event.dwThreadId)); | |
34b34921 | 1310 | handle_exception (ourstatus); |
b80864fb DJ |
1311 | break; |
1312 | ||
1313 | case OUTPUT_DEBUG_STRING_EVENT: | |
1314 | /* A message from the kernel (or Cygwin). */ | |
1315 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
1316 | "for pid=%d tid=%x\n", | |
1317 | (unsigned) current_event.dwProcessId, | |
1318 | (unsigned) current_event.dwThreadId)); | |
bce7165d | 1319 | handle_output_debug_string (ourstatus); |
b80864fb DJ |
1320 | break; |
1321 | ||
1322 | default: | |
1323 | OUTMSG2 (("gdbserver: kernel event unknown " | |
1324 | "for pid=%d tid=%x code=%ld\n", | |
1325 | (unsigned) current_event.dwProcessId, | |
1326 | (unsigned) current_event.dwThreadId, | |
1327 | current_event.dwDebugEventCode)); | |
1328 | break; | |
1329 | } | |
1330 | ||
1331 | current_inferior = | |
1332 | (struct thread_info *) find_inferior_id (&all_threads, | |
1333 | current_event.dwThreadId); | |
b80864fb DJ |
1334 | } |
1335 | ||
1336 | /* Wait for the inferior process to change state. | |
1337 | STATUS will be filled in with a response code to send to GDB. | |
1338 | Returns the signal which caused the process to stop. */ | |
1339 | static unsigned char | |
1340 | win32_wait (char *status) | |
1341 | { | |
1342 | struct target_waitstatus our_status; | |
1343 | ||
1344 | *status = 'T'; | |
1345 | ||
1346 | while (1) | |
1347 | { | |
7390519e PA |
1348 | /* Check if GDB sent us an interrupt request. */ |
1349 | check_remote_input_interrupt_request (); | |
1350 | ||
b80864fb DJ |
1351 | get_child_debug_event (&our_status); |
1352 | ||
34b34921 | 1353 | switch (our_status.kind) |
b80864fb | 1354 | { |
34b34921 | 1355 | case TARGET_WAITKIND_EXITED: |
b80864fb DJ |
1356 | OUTMSG2 (("Child exited with retcode = %x\n", |
1357 | our_status.value.integer)); | |
1358 | ||
1359 | *status = 'W'; | |
1360 | ||
1361 | child_fetch_inferior_registers (-1); | |
1362 | ||
1363 | return our_status.value.integer; | |
34b34921 | 1364 | case TARGET_WAITKIND_STOPPED: |
255e7678 | 1365 | case TARGET_WAITKIND_LOADED: |
f72f3e60 | 1366 | OUTMSG2 (("Child Stopped with signal = %d \n", |
ed50f18f | 1367 | our_status.value.sig)); |
b80864fb DJ |
1368 | |
1369 | *status = 'T'; | |
1370 | ||
1371 | child_fetch_inferior_registers (-1); | |
1372 | ||
255e7678 DJ |
1373 | if (our_status.kind == TARGET_WAITKIND_LOADED |
1374 | && !server_waiting) | |
1375 | { | |
1376 | /* When gdb connects, we want to be stopped at the | |
1377 | initial breakpoint, not in some dll load event. */ | |
1378 | child_continue (DBG_CONTINUE, -1); | |
1379 | break; | |
1380 | } | |
1381 | ||
b80864fb | 1382 | return our_status.value.sig; |
34b34921 PA |
1383 | default: |
1384 | OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind)); | |
1385 | /* fall-through */ | |
1386 | case TARGET_WAITKIND_SPURIOUS: | |
34b34921 PA |
1387 | case TARGET_WAITKIND_EXECD: |
1388 | /* do nothing, just continue */ | |
1389 | child_continue (DBG_CONTINUE, -1); | |
1390 | break; | |
b80864fb | 1391 | } |
b80864fb DJ |
1392 | } |
1393 | } | |
1394 | ||
1395 | /* Fetch registers from the inferior process. | |
1396 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1397 | static void | |
1398 | win32_fetch_inferior_registers (int regno) | |
1399 | { | |
1400 | child_fetch_inferior_registers (regno); | |
1401 | } | |
1402 | ||
1403 | /* Store registers to the inferior process. | |
1404 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1405 | static void | |
1406 | win32_store_inferior_registers (int regno) | |
1407 | { | |
1408 | child_store_inferior_registers (regno); | |
1409 | } | |
1410 | ||
1411 | /* Read memory from the inferior process. This should generally be | |
1412 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1413 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1414 | static int | |
1415 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1416 | { | |
ed50f18f | 1417 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1418 | } |
1419 | ||
1420 | /* Write memory to the inferior process. This should generally be | |
1421 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1422 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1423 | Returns 0 on success and errno on failure. */ | |
1424 | static int | |
1425 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1426 | int len) | |
1427 | { | |
1428 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1429 | } | |
1430 | ||
7390519e PA |
1431 | /* Send an interrupt request to the inferior process. */ |
1432 | static void | |
1433 | win32_request_interrupt (void) | |
1434 | { | |
1435 | winapi_DebugBreakProcess DebugBreakProcess; | |
1436 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1437 | ||
1438 | #ifdef _WIN32_WCE | |
1439 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1440 | #else | |
1441 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1442 | #endif | |
1443 | ||
1444 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1445 | ||
1446 | if (GenerateConsoleCtrlEvent != NULL | |
1447 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1448 | return; | |
1449 | ||
1450 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1451 | not a process group id. | |
1452 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1453 | breakpoint exception in the interior process. */ | |
1454 | ||
1455 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1456 | ||
1457 | if (DebugBreakProcess != NULL | |
1458 | && DebugBreakProcess (current_process_handle)) | |
1459 | return; | |
1460 | ||
1461 | OUTMSG (("Could not interrupt process.\n")); | |
1462 | } | |
1463 | ||
820f2bda PA |
1464 | static const char * |
1465 | win32_arch_string (void) | |
1466 | { | |
ed50f18f | 1467 | return the_low_target.arch_string; |
820f2bda PA |
1468 | } |
1469 | ||
b80864fb DJ |
1470 | static struct target_ops win32_target_ops = { |
1471 | win32_create_inferior, | |
1472 | win32_attach, | |
1473 | win32_kill, | |
1474 | win32_detach, | |
444d6139 | 1475 | win32_join, |
b80864fb DJ |
1476 | win32_thread_alive, |
1477 | win32_resume, | |
1478 | win32_wait, | |
1479 | win32_fetch_inferior_registers, | |
1480 | win32_store_inferior_registers, | |
1481 | win32_read_inferior_memory, | |
1482 | win32_write_inferior_memory, | |
820f2bda | 1483 | NULL, |
7390519e | 1484 | win32_request_interrupt, |
820f2bda PA |
1485 | NULL, |
1486 | NULL, | |
1487 | NULL, | |
1488 | NULL, | |
1489 | NULL, | |
1490 | NULL, | |
1491 | NULL, | |
1492 | win32_arch_string | |
b80864fb DJ |
1493 | }; |
1494 | ||
1495 | /* Initialize the Win32 backend. */ | |
1496 | void | |
1497 | initialize_low (void) | |
1498 | { | |
1499 | set_target_ops (&win32_target_ops); | |
ed50f18f PA |
1500 | if (the_low_target.breakpoint != NULL) |
1501 | set_breakpoint_data (the_low_target.breakpoint, | |
1502 | the_low_target.breakpoint_len); | |
b80864fb DJ |
1503 | init_registers (); |
1504 | } |