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b80864fb | 1 | /* Low level interface to Windows debugging, for gdbserver. |
b811d2c2 | 2 | Copyright (C) 2006-2020 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" | |
59a016f0 | 23 | #include "gdb/fileio.h" |
ed50f18f PA |
24 | #include "mem-break.h" |
25 | #include "win32-low.h" | |
623b6bdf | 26 | #include "gdbthread.h" |
799cdc37 | 27 | #include "dll.h" |
533b0600 | 28 | #include "hostio.h" |
b80864fb | 29 | #include <windows.h> |
ed50f18f | 30 | #include <winnt.h> |
b80864fb | 31 | #include <imagehlp.h> |
255e7678 | 32 | #include <tlhelp32.h> |
b80864fb | 33 | #include <psapi.h> |
b80864fb | 34 | #include <process.h> |
268a13a5 TT |
35 | #include "gdbsupport/gdb_tilde_expand.h" |
36 | #include "gdbsupport/common-inferior.h" | |
559e7e50 | 37 | #include "gdbsupport/gdb_wait.h" |
b80864fb | 38 | |
4834dad0 TT |
39 | using namespace windows_nat; |
40 | ||
b80864fb DJ |
41 | #ifndef USE_WIN32API |
42 | #include <sys/cygwin.h> | |
43 | #endif | |
44 | ||
10357975 PA |
45 | #define OUTMSG(X) do { printf X; fflush (stderr); } while (0) |
46 | ||
47 | #define OUTMSG2(X) \ | |
48 | do \ | |
49 | { \ | |
50 | if (debug_threads) \ | |
51 | { \ | |
52 | printf X; \ | |
53 | fflush (stderr); \ | |
54 | } \ | |
55 | } while (0) | |
ed50f18f PA |
56 | |
57 | #ifndef _T | |
58 | #define _T(x) TEXT (x) | |
59 | #endif | |
60 | ||
61 | #ifndef COUNTOF | |
62 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
63 | #endif |
64 | ||
bf914831 PA |
65 | #ifdef _WIN32_WCE |
66 | # define GETPROCADDRESS(DLL, PROC) \ | |
67 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) | |
68 | #else | |
69 | # define GETPROCADDRESS(DLL, PROC) \ | |
70 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) | |
71 | #endif | |
72 | ||
b80864fb DJ |
73 | int using_threads = 1; |
74 | ||
75 | /* Globals. */ | |
d97903b2 | 76 | static int attaching = 0; |
b80864fb | 77 | |
4210d83e PA |
78 | /* A status that hasn't been reported to the core yet, and so |
79 | win32_wait should return it next, instead of fetching the next | |
80 | debug event off the win32 API. */ | |
81 | static struct target_waitstatus cached_status; | |
82 | ||
4d5d1aaa PA |
83 | /* Non zero if an interrupt request is to be satisfied by suspending |
84 | all threads. */ | |
85 | static int soft_interrupt_requested = 0; | |
86 | ||
87 | /* Non zero if the inferior is stopped in a simulated breakpoint done | |
88 | by suspending all the threads. */ | |
89 | static int faked_breakpoint = 0; | |
90 | ||
6479bf85 HD |
91 | /* True if current_process_handle needs to be closed. */ |
92 | static bool open_process_used = false; | |
93 | ||
7d186bc0 HD |
94 | #ifdef __x86_64__ |
95 | bool wow64_process = false; | |
96 | #endif | |
97 | ||
3aee8918 | 98 | const struct target_desc *win32_tdesc; |
7d186bc0 HD |
99 | #ifdef __x86_64__ |
100 | const struct target_desc *wow64_win32_tdesc; | |
101 | #endif | |
3aee8918 | 102 | |
7d186bc0 | 103 | #define NUM_REGS (the_low_target.num_regs ()) |
b80864fb | 104 | |
7a9a7487 MG |
105 | typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
106 | typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
107 | typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE); | |
108 | typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); | |
b80864fb | 109 | |
7d186bc0 HD |
110 | #ifdef __x86_64__ |
111 | typedef BOOL (WINAPI *winapi_Wow64SetThreadContext) (HANDLE, | |
112 | const WOW64_CONTEXT *); | |
113 | ||
114 | winapi_Wow64GetThreadContext win32_Wow64GetThreadContext; | |
115 | static winapi_Wow64SetThreadContext win32_Wow64SetThreadContext; | |
116 | #endif | |
117 | ||
379a5e2d | 118 | #ifndef _WIN32_WCE |
f25b3fc3 | 119 | static void win32_add_all_dlls (void); |
379a5e2d | 120 | #endif |
34b34921 | 121 | |
b80864fb DJ |
122 | /* Get the thread ID from the current selected inferior (the current |
123 | thread). */ | |
95954743 | 124 | static ptid_t |
0bfdf32f | 125 | current_thread_ptid (void) |
b80864fb | 126 | { |
80894984 | 127 | return current_ptid; |
95954743 PA |
128 | } |
129 | ||
130 | /* The current debug event from WaitForDebugEvent. */ | |
131 | static ptid_t | |
132 | debug_event_ptid (DEBUG_EVENT *event) | |
133 | { | |
fd79271b | 134 | return ptid_t (event->dwProcessId, event->dwThreadId, 0); |
b80864fb DJ |
135 | } |
136 | ||
9c6c8194 PA |
137 | /* Get the thread context of the thread associated with TH. */ |
138 | ||
139 | static void | |
e56f8ccb | 140 | win32_get_thread_context (windows_thread_info *th) |
9c6c8194 | 141 | { |
7d186bc0 HD |
142 | #ifdef __x86_64__ |
143 | if (wow64_process) | |
144 | memset (&th->wow64_context, 0, sizeof (WOW64_CONTEXT)); | |
145 | else | |
146 | #endif | |
147 | memset (&th->context, 0, sizeof (CONTEXT)); | |
a2abc7de | 148 | (*the_low_target.get_thread_context) (th); |
9c6c8194 PA |
149 | #ifdef _WIN32_WCE |
150 | memcpy (&th->base_context, &th->context, sizeof (CONTEXT)); | |
151 | #endif | |
152 | } | |
153 | ||
154 | /* Set the thread context of the thread associated with TH. */ | |
155 | ||
156 | static void | |
e56f8ccb | 157 | win32_set_thread_context (windows_thread_info *th) |
9c6c8194 PA |
158 | { |
159 | #ifdef _WIN32_WCE | |
160 | /* Calling SuspendThread on a thread that is running kernel code | |
161 | will report that the suspending was successful, but in fact, that | |
162 | will often not be true. In those cases, the context returned by | |
163 | GetThreadContext will not be correct by the time the thread | |
164 | stops, hence we can't set that context back into the thread when | |
30baf67b | 165 | resuming - it will most likely crash the inferior. |
9c6c8194 PA |
166 | Unfortunately, there is no way to know when the thread will |
167 | really stop. To work around it, we'll only write the context | |
168 | back to the thread when either the user or GDB explicitly change | |
169 | it between stopping and resuming. */ | |
170 | if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0) | |
171 | #endif | |
7d186bc0 HD |
172 | { |
173 | #ifdef __x86_64__ | |
174 | if (wow64_process) | |
175 | win32_Wow64SetThreadContext (th->h, &th->wow64_context); | |
176 | else | |
177 | #endif | |
178 | SetThreadContext (th->h, &th->context); | |
179 | } | |
9c6c8194 PA |
180 | } |
181 | ||
a2abc7de PA |
182 | /* Set the thread context of the thread associated with TH. */ |
183 | ||
184 | static void | |
e56f8ccb | 185 | win32_prepare_to_resume (windows_thread_info *th) |
b80864fb | 186 | { |
a2abc7de PA |
187 | if (the_low_target.prepare_to_resume != NULL) |
188 | (*the_low_target.prepare_to_resume) (th); | |
189 | } | |
b80864fb | 190 | |
a2abc7de | 191 | /* See win32-low.h. */ |
b80864fb | 192 | |
a2abc7de | 193 | void |
e56f8ccb | 194 | win32_require_context (windows_thread_info *th) |
a2abc7de | 195 | { |
7d186bc0 HD |
196 | DWORD context_flags; |
197 | #ifdef __x86_64__ | |
198 | if (wow64_process) | |
199 | context_flags = th->wow64_context.ContextFlags; | |
200 | else | |
201 | #endif | |
202 | context_flags = th->context.ContextFlags; | |
203 | if (context_flags == 0) | |
b80864fb | 204 | { |
98a03287 | 205 | th->suspend (); |
9c6c8194 | 206 | win32_get_thread_context (th); |
b80864fb | 207 | } |
a2abc7de PA |
208 | } |
209 | ||
28688adf TT |
210 | /* See nat/windows-nat.h. */ |
211 | ||
212 | windows_thread_info * | |
213 | windows_nat::thread_rec (ptid_t ptid, thread_disposition_type disposition) | |
a2abc7de | 214 | { |
8dc7b443 | 215 | thread_info *thread = find_thread_ptid (ptid); |
a2abc7de PA |
216 | if (thread == NULL) |
217 | return NULL; | |
218 | ||
e56f8ccb | 219 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
28688adf | 220 | if (disposition != DONT_INVALIDATE_CONTEXT) |
a2abc7de | 221 | win32_require_context (th); |
b80864fb DJ |
222 | return th; |
223 | } | |
224 | ||
225 | /* Add a thread to the thread list. */ | |
e56f8ccb | 226 | static windows_thread_info * |
711e434b | 227 | child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb) |
b80864fb | 228 | { |
e56f8ccb | 229 | windows_thread_info *th; |
fd79271b | 230 | ptid_t ptid = ptid_t (pid, tid, 0); |
b80864fb | 231 | |
28688adf | 232 | if ((th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT))) |
b80864fb DJ |
233 | return th; |
234 | ||
7d186bc0 HD |
235 | CORE_ADDR base = (CORE_ADDR) (uintptr_t) tlb; |
236 | #ifdef __x86_64__ | |
237 | /* For WOW64 processes, this is actually the pointer to the 64bit TIB, | |
238 | and the 32bit TIB is exactly 2 pages after it. */ | |
239 | if (wow64_process) | |
240 | base += 2 * 4096; /* page size = 4096 */ | |
241 | #endif | |
242 | th = new windows_thread_info (tid, h, base); | |
b80864fb | 243 | |
95954743 | 244 | add_thread (ptid, th); |
b80864fb | 245 | |
34b34921 PA |
246 | if (the_low_target.thread_added != NULL) |
247 | (*the_low_target.thread_added) (th); | |
b80864fb DJ |
248 | |
249 | return th; | |
250 | } | |
251 | ||
252 | /* Delete a thread from the list of threads. */ | |
253 | static void | |
9c80ecd6 | 254 | delete_thread_info (thread_info *thread) |
b80864fb | 255 | { |
e56f8ccb | 256 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
b80864fb | 257 | |
c3de4d92 | 258 | remove_thread (thread); |
e9534bd2 | 259 | delete th; |
b80864fb DJ |
260 | } |
261 | ||
262 | /* Delete a thread from the list of threads. */ | |
263 | static void | |
95954743 | 264 | child_delete_thread (DWORD pid, DWORD tid) |
b80864fb | 265 | { |
b80864fb | 266 | /* If the last thread is exiting, just return. */ |
9c80ecd6 | 267 | if (all_threads.size () == 1) |
b80864fb DJ |
268 | return; |
269 | ||
8dc7b443 | 270 | thread_info *thread = find_thread_ptid (ptid_t (pid, tid)); |
b80864fb DJ |
271 | if (thread == NULL) |
272 | return; | |
273 | ||
274 | delete_thread_info (thread); | |
275 | } | |
276 | ||
aa5ca48f DE |
277 | /* These watchpoint related wrapper functions simply pass on the function call |
278 | if the low target has registered a corresponding function. */ | |
279 | ||
a2b2297a TBA |
280 | bool |
281 | win32_process_target::supports_z_point_type (char z_type) | |
802e8e6d | 282 | { |
523d4f80 TT |
283 | return (z_type == Z_PACKET_SW_BP |
284 | || (the_low_target.supports_z_point_type != NULL | |
285 | && the_low_target.supports_z_point_type (z_type))); | |
802e8e6d PA |
286 | } |
287 | ||
7e0bde70 TBA |
288 | int |
289 | win32_process_target::insert_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
290 | int size, raw_breakpoint *bp) | |
aa5ca48f | 291 | { |
523d4f80 TT |
292 | if (type == raw_bkpt_type_sw) |
293 | return insert_memory_breakpoint (bp); | |
294 | else if (the_low_target.insert_point != NULL) | |
802e8e6d | 295 | return the_low_target.insert_point (type, addr, size, bp); |
aa5ca48f DE |
296 | else |
297 | /* Unsupported (see target.h). */ | |
298 | return 1; | |
299 | } | |
300 | ||
7e0bde70 TBA |
301 | int |
302 | win32_process_target::remove_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
303 | int size, raw_breakpoint *bp) | |
aa5ca48f | 304 | { |
523d4f80 TT |
305 | if (type == raw_bkpt_type_sw) |
306 | return remove_memory_breakpoint (bp); | |
307 | else if (the_low_target.remove_point != NULL) | |
802e8e6d | 308 | return the_low_target.remove_point (type, addr, size, bp); |
aa5ca48f DE |
309 | else |
310 | /* Unsupported (see target.h). */ | |
311 | return 1; | |
312 | } | |
313 | ||
6eeb5c55 TBA |
314 | bool |
315 | win32_process_target::stopped_by_watchpoint () | |
aa5ca48f DE |
316 | { |
317 | if (the_low_target.stopped_by_watchpoint != NULL) | |
318 | return the_low_target.stopped_by_watchpoint (); | |
319 | else | |
6eeb5c55 | 320 | return false; |
aa5ca48f DE |
321 | } |
322 | ||
6eeb5c55 TBA |
323 | CORE_ADDR |
324 | win32_process_target::stopped_data_address () | |
aa5ca48f DE |
325 | { |
326 | if (the_low_target.stopped_data_address != NULL) | |
327 | return the_low_target.stopped_data_address (); | |
328 | else | |
329 | return 0; | |
330 | } | |
331 | ||
332 | ||
b80864fb DJ |
333 | /* Transfer memory from/to the debugged process. */ |
334 | static int | |
335 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
5b6d1e4f | 336 | int write, process_stratum_target *target) |
b80864fb | 337 | { |
cee83bcb PM |
338 | BOOL success; |
339 | SIZE_T done = 0; | |
340 | DWORD lasterror = 0; | |
e8f0053d | 341 | uintptr_t addr = (uintptr_t) memaddr; |
b80864fb DJ |
342 | |
343 | if (write) | |
344 | { | |
cee83bcb PM |
345 | success = WriteProcessMemory (current_process_handle, (LPVOID) addr, |
346 | (LPCVOID) our, len, &done); | |
347 | if (!success) | |
348 | lasterror = GetLastError (); | |
b80864fb DJ |
349 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); |
350 | } | |
351 | else | |
352 | { | |
cee83bcb PM |
353 | success = ReadProcessMemory (current_process_handle, (LPCVOID) addr, |
354 | (LPVOID) our, len, &done); | |
355 | if (!success) | |
356 | lasterror = GetLastError (); | |
b80864fb | 357 | } |
cee83bcb PM |
358 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
359 | return done; | |
360 | else | |
361 | return success ? done : -1; | |
b80864fb DJ |
362 | } |
363 | ||
ed50f18f | 364 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
365 | state. */ |
366 | static void | |
367 | child_init_thread_list (void) | |
368 | { | |
f0045347 | 369 | for_each_thread (delete_thread_info); |
b80864fb DJ |
370 | } |
371 | ||
f25b3fc3 JB |
372 | /* Zero during the child initialization phase, and nonzero otherwise. */ |
373 | ||
374 | static int child_initialization_done = 0; | |
375 | ||
b80864fb | 376 | static void |
95954743 | 377 | do_initial_child_stuff (HANDLE proch, DWORD pid, int attached) |
b80864fb | 378 | { |
3aee8918 PA |
379 | struct process_info *proc; |
380 | ||
a493e3e2 | 381 | last_sig = GDB_SIGNAL_0; |
b80864fb | 382 | |
5ac588cf PA |
383 | current_process_handle = proch; |
384 | current_process_id = pid; | |
385 | main_thread_id = 0; | |
386 | ||
387 | soft_interrupt_requested = 0; | |
388 | faked_breakpoint = 0; | |
6479bf85 | 389 | open_process_used = true; |
5ac588cf | 390 | |
b80864fb DJ |
391 | memset (¤t_event, 0, sizeof (current_event)); |
392 | ||
7d186bc0 HD |
393 | #ifdef __x86_64__ |
394 | BOOL wow64; | |
395 | if (!IsWow64Process (proch, &wow64)) | |
396 | { | |
397 | DWORD err = GetLastError (); | |
398 | error ("Check if WOW64 process failed (error %d): %s\n", | |
399 | (int) err, strwinerror (err)); | |
400 | } | |
401 | wow64_process = wow64; | |
402 | ||
403 | if (wow64_process | |
404 | && (win32_Wow64GetThreadContext == nullptr | |
405 | || win32_Wow64SetThreadContext == nullptr)) | |
406 | error ("WOW64 debugging is not supported on this system.\n"); | |
407 | ||
408 | ignore_first_breakpoint = !attached && wow64_process; | |
409 | #endif | |
410 | ||
3aee8918 | 411 | proc = add_process (pid, attached); |
7d186bc0 HD |
412 | #ifdef __x86_64__ |
413 | if (wow64_process) | |
414 | proc->tdesc = wow64_win32_tdesc; | |
415 | else | |
416 | #endif | |
417 | proc->tdesc = win32_tdesc; | |
b80864fb | 418 | child_init_thread_list (); |
f25b3fc3 | 419 | child_initialization_done = 0; |
ed50f18f PA |
420 | |
421 | if (the_low_target.initial_stuff != NULL) | |
422 | (*the_low_target.initial_stuff) (); | |
4210d83e PA |
423 | |
424 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
425 | ||
426 | /* Flush all currently pending debug events (thread and dll list) up | |
427 | to the initial breakpoint. */ | |
428 | while (1) | |
429 | { | |
430 | struct target_waitstatus status; | |
431 | ||
52405d85 | 432 | the_target->wait (minus_one_ptid, &status, 0); |
4210d83e PA |
433 | |
434 | /* Note win32_wait doesn't return thread events. */ | |
435 | if (status.kind != TARGET_WAITKIND_LOADED) | |
436 | { | |
437 | cached_status = status; | |
438 | break; | |
439 | } | |
440 | ||
441 | { | |
442 | struct thread_resume resume; | |
443 | ||
444 | resume.thread = minus_one_ptid; | |
445 | resume.kind = resume_continue; | |
446 | resume.sig = 0; | |
447 | ||
52405d85 | 448 | the_target->resume (&resume, 1); |
4210d83e PA |
449 | } |
450 | } | |
379a5e2d JB |
451 | |
452 | #ifndef _WIN32_WCE | |
f25b3fc3 JB |
453 | /* Now that the inferior has been started and all DLLs have been mapped, |
454 | we can iterate over all DLLs and load them in. | |
455 | ||
456 | We avoid doing it any earlier because, on certain versions of Windows, | |
457 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
458 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
459 | include the DLL name, preventing us from creating an associated SO. | |
460 | A possible explanation is that ntdll.dll might be mapped before | |
461 | the SO info gets created by the Windows system -- ntdll.dll is | |
462 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
463 | do not seem to suffer from that problem. | |
464 | ||
465 | Rather than try to work around this sort of issue, it is much | |
466 | simpler to just ignore DLL load/unload events during the startup | |
467 | phase, and then process them all in one batch now. */ | |
468 | win32_add_all_dlls (); | |
379a5e2d | 469 | #endif |
f25b3fc3 JB |
470 | |
471 | child_initialization_done = 1; | |
b80864fb DJ |
472 | } |
473 | ||
474 | /* Resume all artificially suspended threads if we are continuing | |
475 | execution. */ | |
2bee2b6c SM |
476 | static void |
477 | continue_one_thread (thread_info *thread, int thread_id) | |
b80864fb | 478 | { |
e56f8ccb | 479 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
b80864fb | 480 | |
a2abc7de | 481 | if (thread_id == -1 || thread_id == th->tid) |
b80864fb | 482 | { |
a2abc7de | 483 | win32_prepare_to_resume (th); |
34b34921 | 484 | |
a2abc7de | 485 | if (th->suspended) |
c436e841 | 486 | { |
7d186bc0 HD |
487 | DWORD *context_flags; |
488 | #ifdef __x86_64__ | |
489 | if (wow64_process) | |
490 | context_flags = &th->wow64_context.ContextFlags; | |
491 | else | |
492 | #endif | |
493 | context_flags = &th->context.ContextFlags; | |
494 | if (*context_flags) | |
a2abc7de PA |
495 | { |
496 | win32_set_thread_context (th); | |
7d186bc0 | 497 | *context_flags = 0; |
a2abc7de PA |
498 | } |
499 | ||
98a03287 | 500 | th->resume (); |
c436e841 | 501 | } |
b80864fb | 502 | } |
b80864fb DJ |
503 | } |
504 | ||
505 | static BOOL | |
506 | child_continue (DWORD continue_status, int thread_id) | |
507 | { | |
360ad8b3 TT |
508 | desired_stop_thread_id = thread_id; |
509 | if (matching_pending_stop (debug_threads)) | |
510 | return TRUE; | |
511 | ||
4d5d1aaa PA |
512 | /* The inferior will only continue after the ContinueDebugEvent |
513 | call. */ | |
2bee2b6c SM |
514 | for_each_thread ([&] (thread_info *thread) |
515 | { | |
516 | continue_one_thread (thread, thread_id); | |
517 | }); | |
4d5d1aaa | 518 | faked_breakpoint = 0; |
b80864fb | 519 | |
e758e19c | 520 | return continue_last_debug_event (continue_status, debug_threads); |
b80864fb DJ |
521 | } |
522 | ||
b80864fb DJ |
523 | /* Fetch register(s) from the current thread context. */ |
524 | static void | |
442ea881 | 525 | child_fetch_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
526 | { |
527 | int regno; | |
28688adf TT |
528 | windows_thread_info *th = thread_rec (current_thread_ptid (), |
529 | INVALIDATE_CONTEXT); | |
4463ce24 | 530 | if (r == -1 || r > NUM_REGS) |
442ea881 | 531 | child_fetch_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
532 | else |
533 | for (regno = 0; regno < r; regno++) | |
442ea881 | 534 | (*the_low_target.fetch_inferior_register) (regcache, th, regno); |
b80864fb DJ |
535 | } |
536 | ||
537 | /* Store a new register value into the current thread context. We don't | |
538 | change the program's context until later, when we resume it. */ | |
539 | static void | |
442ea881 | 540 | child_store_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
541 | { |
542 | int regno; | |
28688adf TT |
543 | windows_thread_info *th = thread_rec (current_thread_ptid (), |
544 | INVALIDATE_CONTEXT); | |
b80864fb | 545 | if (r == -1 || r == 0 || r > NUM_REGS) |
442ea881 | 546 | child_store_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
547 | else |
548 | for (regno = 0; regno < r; regno++) | |
442ea881 | 549 | (*the_low_target.store_inferior_register) (regcache, th, regno); |
b80864fb DJ |
550 | } |
551 | ||
ed50f18f PA |
552 | /* Map the Windows error number in ERROR to a locale-dependent error |
553 | message string and return a pointer to it. Typically, the values | |
554 | for ERROR come from GetLastError. | |
555 | ||
556 | The string pointed to shall not be modified by the application, | |
557 | but may be overwritten by a subsequent call to strwinerror | |
558 | ||
559 | The strwinerror function does not change the current setting | |
560 | of GetLastError. */ | |
561 | ||
562 | char * | |
563 | strwinerror (DWORD error) | |
564 | { | |
565 | static char buf[1024]; | |
566 | TCHAR *msgbuf; | |
567 | DWORD lasterr = GetLastError (); | |
568 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
569 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
570 | NULL, | |
571 | error, | |
572 | 0, /* Default language */ | |
c3de4d92 | 573 | (LPTSTR) &msgbuf, |
ed50f18f PA |
574 | 0, |
575 | NULL); | |
576 | if (chars != 0) | |
577 | { | |
578 | /* If there is an \r\n appended, zap it. */ | |
579 | if (chars >= 2 | |
580 | && msgbuf[chars - 2] == '\r' | |
581 | && msgbuf[chars - 1] == '\n') | |
582 | { | |
583 | chars -= 2; | |
584 | msgbuf[chars] = 0; | |
585 | } | |
586 | ||
587 | if (chars > ((COUNTOF (buf)) - 1)) | |
588 | { | |
589 | chars = COUNTOF (buf) - 1; | |
590 | msgbuf [chars] = 0; | |
591 | } | |
592 | ||
593 | #ifdef UNICODE | |
594 | wcstombs (buf, msgbuf, chars + 1); | |
595 | #else | |
596 | strncpy (buf, msgbuf, chars + 1); | |
597 | #endif | |
598 | LocalFree (msgbuf); | |
599 | } | |
600 | else | |
dfe07582 | 601 | sprintf (buf, "unknown win32 error (%u)", (unsigned) error); |
ed50f18f PA |
602 | |
603 | SetLastError (lasterr); | |
604 | return buf; | |
605 | } | |
606 | ||
aec18585 PA |
607 | static BOOL |
608 | create_process (const char *program, char *args, | |
609 | DWORD flags, PROCESS_INFORMATION *pi) | |
610 | { | |
bc3b087d | 611 | const char *inferior_cwd = get_inferior_cwd (); |
aec18585 | 612 | BOOL ret; |
a9b34532 EZ |
613 | size_t argslen, proglen; |
614 | ||
615 | proglen = strlen (program) + 1; | |
616 | argslen = strlen (args) + proglen; | |
aec18585 PA |
617 | |
618 | #ifdef _WIN32_WCE | |
bc3b087d | 619 | wchar_t *p, *wprogram, *wargs, *wcwd = NULL; |
aec18585 | 620 | |
a9b34532 EZ |
621 | wprogram = (wchar_t *) alloca (proglen * sizeof (wchar_t)); |
622 | mbstowcs (wprogram, program, proglen); | |
aec18585 PA |
623 | |
624 | for (p = wprogram; *p; ++p) | |
625 | if (L'/' == *p) | |
626 | *p = L'\\'; | |
627 | ||
aec18585 | 628 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); |
a9b34532 EZ |
629 | wcscpy (wargs, wprogram); |
630 | wcscat (wargs, L" "); | |
631 | mbstowcs (wargs + proglen, args, argslen + 1 - proglen); | |
aec18585 | 632 | |
bc3b087d SDJ |
633 | if (inferior_cwd != NULL) |
634 | { | |
906994d9 | 635 | std::string expanded_infcwd = gdb_tilde_expand (inferior_cwd); |
bc3b087d SDJ |
636 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), |
637 | '/', '\\'); | |
638 | wcwd = alloca ((expanded_infcwd.size () + 1) * sizeof (wchar_t)); | |
639 | if (mbstowcs (wcwd, expanded_infcwd.c_str (), | |
640 | expanded_infcwd.size () + 1) == NULL) | |
641 | { | |
642 | error (_("\ | |
643 | Could not convert the expanded inferior cwd to wide-char.")); | |
644 | } | |
645 | } | |
646 | ||
aec18585 | 647 | ret = CreateProcessW (wprogram, /* image name */ |
1b3f6016 PA |
648 | wargs, /* command line */ |
649 | NULL, /* security, not supported */ | |
650 | NULL, /* thread, not supported */ | |
651 | FALSE, /* inherit handles, not supported */ | |
652 | flags, /* start flags */ | |
653 | NULL, /* environment, not supported */ | |
bc3b087d | 654 | wcwd, /* current directory */ |
1b3f6016 PA |
655 | NULL, /* start info, not supported */ |
656 | pi); /* proc info */ | |
aec18585 PA |
657 | #else |
658 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; | |
a9b34532 EZ |
659 | char *program_and_args = (char *) alloca (argslen + 1); |
660 | ||
661 | strcpy (program_and_args, program); | |
662 | strcat (program_and_args, " "); | |
663 | strcat (program_and_args, args); | |
664 | ret = CreateProcessA (program, /* image name */ | |
665 | program_and_args, /* command line */ | |
666 | NULL, /* security */ | |
667 | NULL, /* thread */ | |
668 | TRUE, /* inherit handles */ | |
669 | flags, /* start flags */ | |
670 | NULL, /* environment */ | |
906994d9 JB |
671 | /* current directory */ |
672 | (inferior_cwd == NULL | |
673 | ? NULL | |
674 | : gdb_tilde_expand (inferior_cwd).c_str()), | |
a9b34532 EZ |
675 | &si, /* start info */ |
676 | pi); /* proc info */ | |
aec18585 PA |
677 | #endif |
678 | ||
679 | return ret; | |
680 | } | |
681 | ||
b80864fb | 682 | /* Start a new process. |
2090129c SDJ |
683 | PROGRAM is the program name. |
684 | PROGRAM_ARGS is the vector containing the inferior's args. | |
b80864fb DJ |
685 | Returns the new PID on success, -1 on failure. Registers the new |
686 | process with the process list. */ | |
15295543 TBA |
687 | int |
688 | win32_process_target::create_inferior (const char *program, | |
689 | const std::vector<char *> &program_args) | |
b80864fb | 690 | { |
6341380d | 691 | client_state &cs = get_client_state (); |
b80864fb | 692 | #ifndef USE_WIN32API |
d8d2a3ee | 693 | char real_path[PATH_MAX]; |
b80864fb DJ |
694 | char *orig_path, *new_path, *path_ptr; |
695 | #endif | |
b80864fb DJ |
696 | BOOL ret; |
697 | DWORD flags; | |
ed50f18f | 698 | PROCESS_INFORMATION pi; |
aec18585 | 699 | DWORD err; |
bea571eb | 700 | std::string str_program_args = construct_inferior_arguments (program_args); |
2090129c | 701 | char *args = (char *) str_program_args.c_str (); |
b80864fb | 702 | |
d97903b2 PA |
703 | /* win32_wait needs to know we're not attaching. */ |
704 | attaching = 0; | |
705 | ||
b80864fb DJ |
706 | if (!program) |
707 | error ("No executable specified, specify executable to debug.\n"); | |
708 | ||
b80864fb DJ |
709 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
710 | ||
711 | #ifndef USE_WIN32API | |
712 | orig_path = NULL; | |
713 | path_ptr = getenv ("PATH"); | |
714 | if (path_ptr) | |
715 | { | |
81239425 | 716 | int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0); |
0ae534d2 JT |
717 | orig_path = (char *) alloca (strlen (path_ptr) + 1); |
718 | new_path = (char *) alloca (size); | |
b80864fb | 719 | strcpy (orig_path, path_ptr); |
81239425 | 720 | cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size); |
b80864fb | 721 | setenv ("PATH", new_path, 1); |
81239425 | 722 | } |
d8d2a3ee | 723 | cygwin_conv_path (CCP_POSIX_TO_WIN_A, program, real_path, PATH_MAX); |
b80864fb DJ |
724 | program = real_path; |
725 | #endif | |
726 | ||
a9b34532 | 727 | OUTMSG2 (("Command line is \"%s %s\"\n", program, args)); |
b80864fb | 728 | |
ed50f18f | 729 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 730 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 731 | #endif |
b80864fb | 732 | |
aec18585 PA |
733 | ret = create_process (program, args, flags, &pi); |
734 | err = GetLastError (); | |
735 | if (!ret && err == ERROR_FILE_NOT_FOUND) | |
736 | { | |
c3de4d92 | 737 | char *exename = (char *) alloca (strlen (program) + 5); |
aec18585 PA |
738 | strcat (strcpy (exename, program), ".exe"); |
739 | ret = create_process (exename, args, flags, &pi); | |
740 | err = GetLastError (); | |
741 | } | |
b80864fb DJ |
742 | |
743 | #ifndef USE_WIN32API | |
744 | if (orig_path) | |
745 | setenv ("PATH", orig_path, 1); | |
746 | #endif | |
747 | ||
748 | if (!ret) | |
749 | { | |
a9b34532 | 750 | error ("Error creating process \"%s %s\", (error %d): %s\n", |
ed50f18f | 751 | program, args, (int) err, strwinerror (err)); |
b80864fb DJ |
752 | } |
753 | else | |
754 | { | |
a9b34532 | 755 | OUTMSG2 (("Process created: %s %s\n", program, (char *) args)); |
b80864fb DJ |
756 | } |
757 | ||
ed50f18f PA |
758 | #ifndef _WIN32_WCE |
759 | /* On Windows CE this handle can't be closed. The OS reuses | |
760 | it in the debug events, while the 9x/NT versions of Windows | |
761 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 762 | CloseHandle (pi.hThread); |
ed50f18f | 763 | #endif |
b80864fb | 764 | |
95954743 | 765 | do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0); |
b80864fb | 766 | |
7dbac825 JB |
767 | /* Wait till we are at 1st instruction in program, return new pid |
768 | (assuming success). */ | |
6532e7e3 | 769 | cs.last_ptid = wait (ptid_t (current_process_id), &cs.last_status, 0); |
7dbac825 | 770 | |
052793ad HD |
771 | /* Necessary for handle_v_kill. */ |
772 | signal_pid = current_process_id; | |
773 | ||
b80864fb DJ |
774 | return current_process_id; |
775 | } | |
776 | ||
777 | /* Attach to a running process. | |
778 | PID is the process ID to attach to, specified by the user | |
779 | or a higher layer. */ | |
ef03dad8 TBA |
780 | int |
781 | win32_process_target::attach (unsigned long pid) | |
b80864fb | 782 | { |
5ca906e6 | 783 | HANDLE h; |
bf914831 | 784 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
5ca906e6 | 785 | DWORD err; |
ed50f18f PA |
786 | #ifdef _WIN32_WCE |
787 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
788 | #else | |
789 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
790 | #endif | |
bf914831 | 791 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
b80864fb | 792 | |
5ca906e6 PA |
793 | h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
794 | if (h != NULL) | |
1d5315fe | 795 | { |
5ca906e6 PA |
796 | if (DebugActiveProcess (pid)) |
797 | { | |
798 | if (DebugSetProcessKillOnExit != NULL) | |
799 | DebugSetProcessKillOnExit (FALSE); | |
800 | ||
d97903b2 | 801 | /* win32_wait needs to know we're attaching. */ |
1b3f6016 | 802 | attaching = 1; |
95954743 | 803 | do_initial_child_stuff (h, pid, 1); |
5ca906e6 PA |
804 | return 0; |
805 | } | |
806 | ||
807 | CloseHandle (h); | |
b80864fb DJ |
808 | } |
809 | ||
5ca906e6 PA |
810 | err = GetLastError (); |
811 | error ("Attach to process failed (error %d): %s\n", | |
812 | (int) err, strwinerror (err)); | |
b80864fb DJ |
813 | } |
814 | ||
d41b524f TT |
815 | /* See nat/windows-nat.h. */ |
816 | ||
817 | int | |
818 | windows_nat::handle_output_debug_string (struct target_waitstatus *ourstatus) | |
bce7165d PA |
819 | { |
820 | #define READ_BUFFER_LEN 1024 | |
821 | CORE_ADDR addr; | |
822 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
823 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
824 | ||
825 | if (nbytes == 0) | |
d41b524f | 826 | return 0; |
bce7165d PA |
827 | |
828 | if (nbytes > READ_BUFFER_LEN) | |
829 | nbytes = READ_BUFFER_LEN; | |
830 | ||
831 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
832 | ||
833 | if (current_event.u.DebugString.fUnicode) | |
834 | { | |
835 | /* The event tells us how many bytes, not chars, even | |
1b3f6016 | 836 | in Unicode. */ |
bce7165d PA |
837 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; |
838 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
d41b524f | 839 | return 0; |
bce7165d PA |
840 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); |
841 | } | |
842 | else | |
843 | { | |
844 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
d41b524f | 845 | return 0; |
bce7165d PA |
846 | } |
847 | ||
61012eef | 848 | if (!startswith (s, "cYg")) |
45e2715e PA |
849 | { |
850 | if (!server_waiting) | |
851 | { | |
852 | OUTMSG2(("%s", s)); | |
d41b524f | 853 | return 0; |
45e2715e PA |
854 | } |
855 | ||
856 | monitor_output (s); | |
857 | } | |
bce7165d | 858 | #undef READ_BUFFER_LEN |
d41b524f TT |
859 | |
860 | return 0; | |
bce7165d PA |
861 | } |
862 | ||
5ac588cf PA |
863 | static void |
864 | win32_clear_inferiors (void) | |
865 | { | |
6479bf85 HD |
866 | if (open_process_used) |
867 | { | |
868 | CloseHandle (current_process_handle); | |
869 | open_process_used = false; | |
870 | } | |
5ac588cf | 871 | |
f0045347 | 872 | for_each_thread (delete_thread_info); |
7928d571 | 873 | siginfo_er.ExceptionCode = 0; |
5ac588cf PA |
874 | clear_inferiors (); |
875 | } | |
876 | ||
a780ef4f PA |
877 | /* Implementation of target_ops::kill. */ |
878 | ||
c6885a57 TBA |
879 | int |
880 | win32_process_target::kill (process_info *process) | |
b80864fb DJ |
881 | { |
882 | TerminateProcess (current_process_handle, 0); | |
883 | for (;;) | |
884 | { | |
885 | if (!child_continue (DBG_CONTINUE, -1)) | |
886 | break; | |
2c1d95e8 | 887 | if (!wait_for_debug_event (¤t_event, INFINITE)) |
b80864fb DJ |
888 | break; |
889 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
890 | break; | |
bce7165d | 891 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
d41b524f | 892 | handle_output_debug_string (nullptr); |
b80864fb | 893 | } |
ed50f18f | 894 | |
5ac588cf | 895 | win32_clear_inferiors (); |
95954743 | 896 | |
95954743 PA |
897 | remove_process (process); |
898 | return 0; | |
b80864fb DJ |
899 | } |
900 | ||
ef2ddb33 PA |
901 | /* Implementation of target_ops::detach. */ |
902 | ||
9061c9cf TBA |
903 | int |
904 | win32_process_target::detach (process_info *process) | |
b80864fb | 905 | { |
bf914831 PA |
906 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
907 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
908 | #ifdef _WIN32_WCE |
909 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
910 | #else | |
911 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
912 | #endif | |
bf914831 PA |
913 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
914 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 915 | |
444d6139 PA |
916 | if (DebugSetProcessKillOnExit == NULL |
917 | || DebugActiveProcessStop == NULL) | |
918 | return -1; | |
b80864fb | 919 | |
444d6139 PA |
920 | { |
921 | struct thread_resume resume; | |
95954743 | 922 | resume.thread = minus_one_ptid; |
bd99dc85 | 923 | resume.kind = resume_continue; |
444d6139 | 924 | resume.sig = 0; |
0e4d7e35 | 925 | this->resume (&resume, 1); |
444d6139 PA |
926 | } |
927 | ||
928 | if (!DebugActiveProcessStop (current_process_id)) | |
5ac588cf PA |
929 | return -1; |
930 | ||
444d6139 | 931 | DebugSetProcessKillOnExit (FALSE); |
95954743 | 932 | remove_process (process); |
444d6139 | 933 | |
5ac588cf | 934 | win32_clear_inferiors (); |
444d6139 PA |
935 | return 0; |
936 | } | |
937 | ||
8adb37b9 TBA |
938 | void |
939 | win32_process_target::mourn (struct process_info *process) | |
505106cd PA |
940 | { |
941 | remove_process (process); | |
942 | } | |
943 | ||
ef2ddb33 PA |
944 | /* Implementation of target_ops::join. */ |
945 | ||
95a49a39 TBA |
946 | void |
947 | win32_process_target::join (int pid) | |
444d6139 | 948 | { |
d105de22 | 949 | HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
5ac588cf PA |
950 | if (h != NULL) |
951 | { | |
952 | WaitForSingleObject (h, INFINITE); | |
953 | CloseHandle (h); | |
954 | } | |
b80864fb DJ |
955 | } |
956 | ||
13d3d99b TBA |
957 | /* Return true iff the thread with thread ID TID is alive. */ |
958 | bool | |
959 | win32_process_target::thread_alive (ptid_t ptid) | |
b80864fb | 960 | { |
b80864fb DJ |
961 | /* Our thread list is reliable; don't bother to poll target |
962 | threads. */ | |
8dc7b443 | 963 | return find_thread_ptid (ptid) != NULL; |
b80864fb DJ |
964 | } |
965 | ||
966 | /* Resume the inferior process. RESUME_INFO describes how we want | |
967 | to resume. */ | |
0e4d7e35 TBA |
968 | void |
969 | win32_process_target::resume (thread_resume *resume_info, size_t n) | |
b80864fb DJ |
970 | { |
971 | DWORD tid; | |
2ea28649 | 972 | enum gdb_signal sig; |
b80864fb | 973 | int step; |
e56f8ccb | 974 | windows_thread_info *th; |
b80864fb | 975 | DWORD continue_status = DBG_CONTINUE; |
95954743 | 976 | ptid_t ptid; |
b80864fb DJ |
977 | |
978 | /* This handles the very limited set of resume packets that GDB can | |
979 | currently produce. */ | |
980 | ||
d7e15655 | 981 | if (n == 1 && resume_info[0].thread == minus_one_ptid) |
b80864fb | 982 | tid = -1; |
2bd7c093 | 983 | else if (n > 1) |
b80864fb DJ |
984 | tid = -1; |
985 | else | |
986 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
987 | the Windows resume code do the right thing for thread switching. */ | |
988 | tid = current_event.dwThreadId; | |
989 | ||
d7e15655 | 990 | if (resume_info[0].thread != minus_one_ptid) |
b80864fb | 991 | { |
ce7715e2 | 992 | sig = gdb_signal_from_host (resume_info[0].sig); |
bd99dc85 | 993 | step = resume_info[0].kind == resume_step; |
b80864fb DJ |
994 | } |
995 | else | |
996 | { | |
ce7715e2 | 997 | sig = GDB_SIGNAL_0; |
b80864fb DJ |
998 | step = 0; |
999 | } | |
1000 | ||
a493e3e2 | 1001 | if (sig != GDB_SIGNAL_0) |
b80864fb DJ |
1002 | { |
1003 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
1004 | { | |
ce7715e2 PA |
1005 | OUTMSG (("Cannot continue with signal %s here.\n", |
1006 | gdb_signal_to_string (sig))); | |
b80864fb DJ |
1007 | } |
1008 | else if (sig == last_sig) | |
1009 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1010 | else | |
ce7715e2 PA |
1011 | OUTMSG (("Can only continue with received signal %s.\n", |
1012 | gdb_signal_to_string (last_sig))); | |
b80864fb DJ |
1013 | } |
1014 | ||
a493e3e2 | 1015 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
1016 | |
1017 | /* Get context for the currently selected thread. */ | |
95954743 | 1018 | ptid = debug_event_ptid (¤t_event); |
28688adf | 1019 | th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
b80864fb DJ |
1020 | if (th) |
1021 | { | |
a2abc7de PA |
1022 | win32_prepare_to_resume (th); |
1023 | ||
7d186bc0 HD |
1024 | DWORD *context_flags; |
1025 | #ifdef __x86_64__ | |
1026 | if (wow64_process) | |
1027 | context_flags = &th->wow64_context.ContextFlags; | |
1028 | else | |
1029 | #endif | |
1030 | context_flags = &th->context.ContextFlags; | |
1031 | if (*context_flags) | |
b80864fb | 1032 | { |
b80864fb DJ |
1033 | /* Move register values from the inferior into the thread |
1034 | context structure. */ | |
1035 | regcache_invalidate (); | |
1036 | ||
1037 | if (step) | |
ed50f18f PA |
1038 | { |
1039 | if (the_low_target.single_step != NULL) | |
1040 | (*the_low_target.single_step) (th); | |
1041 | else | |
1042 | error ("Single stepping is not supported " | |
1043 | "in this configuration.\n"); | |
1044 | } | |
34b34921 | 1045 | |
9c6c8194 | 1046 | win32_set_thread_context (th); |
7d186bc0 | 1047 | *context_flags = 0; |
b80864fb DJ |
1048 | } |
1049 | } | |
1050 | ||
1051 | /* Allow continuing with the same signal that interrupted us. | |
1052 | Otherwise complain. */ | |
1053 | ||
1054 | child_continue (continue_status, tid); | |
1055 | } | |
1056 | ||
255e7678 DJ |
1057 | static void |
1058 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
1059 | { | |
1060 | char buf[MAX_PATH + 1]; | |
1061 | char buf2[MAX_PATH + 1]; | |
1062 | ||
1063 | #ifdef _WIN32_WCE | |
1064 | WIN32_FIND_DATA w32_fd; | |
1065 | WCHAR wname[MAX_PATH + 1]; | |
1066 | mbstowcs (wname, name, MAX_PATH); | |
1067 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
1068 | #else | |
1069 | WIN32_FIND_DATAA w32_fd; | |
1070 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
1071 | #endif | |
1072 | ||
850a0f76 JB |
1073 | /* The symbols in a dll are offset by 0x1000, which is the |
1074 | offset from 0 of the first byte in an image - because | |
1075 | of the file header and the section alignment. */ | |
1076 | load_addr += 0x1000; | |
1077 | ||
255e7678 DJ |
1078 | if (h == INVALID_HANDLE_VALUE) |
1079 | strcpy (buf, name); | |
1080 | else | |
1081 | { | |
1082 | FindClose (h); | |
1083 | strcpy (buf, name); | |
1084 | #ifndef _WIN32_WCE | |
1085 | { | |
1086 | char cwd[MAX_PATH + 1]; | |
1087 | char *p; | |
1088 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
1089 | { | |
1090 | p = strrchr (buf, '\\'); | |
1091 | if (p) | |
1092 | p[1] = '\0'; | |
1093 | SetCurrentDirectoryA (buf); | |
1094 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
1095 | SetCurrentDirectoryA (cwd); | |
1096 | } | |
1097 | } | |
1098 | #endif | |
1099 | } | |
1100 | ||
cf6e3471 PA |
1101 | #ifndef _WIN32_WCE |
1102 | if (strcasecmp (buf, "ntdll.dll") == 0) | |
1103 | { | |
1104 | GetSystemDirectoryA (buf, sizeof (buf)); | |
1105 | strcat (buf, "\\ntdll.dll"); | |
1106 | } | |
1107 | #endif | |
1108 | ||
255e7678 | 1109 | #ifdef __CYGWIN__ |
81239425 | 1110 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2)); |
255e7678 DJ |
1111 | #else |
1112 | strcpy (buf2, buf); | |
1113 | #endif | |
1114 | ||
1115 | loaded_dll (buf2, load_addr); | |
1116 | } | |
1117 | ||
255e7678 DJ |
1118 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, |
1119 | DWORD, LPDWORD); | |
7d186bc0 HD |
1120 | #ifdef __x86_64__ |
1121 | typedef BOOL (WINAPI *winapi_EnumProcessModulesEx) (HANDLE, HMODULE *, DWORD, | |
1122 | LPDWORD, DWORD); | |
1123 | #endif | |
255e7678 DJ |
1124 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, |
1125 | LPMODULEINFO, DWORD); | |
1126 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
1127 | LPSTR, DWORD); | |
1128 | ||
1129 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
7d186bc0 HD |
1130 | #ifdef __x86_64__ |
1131 | static winapi_EnumProcessModulesEx win32_EnumProcessModulesEx; | |
1132 | #endif | |
255e7678 DJ |
1133 | static winapi_GetModuleInformation win32_GetModuleInformation; |
1134 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
1135 | ||
1136 | static BOOL | |
1137 | load_psapi (void) | |
1138 | { | |
1139 | static int psapi_loaded = 0; | |
1140 | static HMODULE dll = NULL; | |
1141 | ||
1142 | if (!psapi_loaded) | |
1143 | { | |
1144 | psapi_loaded = 1; | |
1145 | dll = LoadLibrary (TEXT("psapi.dll")); | |
1146 | if (!dll) | |
1147 | return FALSE; | |
1148 | win32_EnumProcessModules = | |
1149 | GETPROCADDRESS (dll, EnumProcessModules); | |
7d186bc0 HD |
1150 | #ifdef __x86_64__ |
1151 | win32_EnumProcessModulesEx = | |
1152 | GETPROCADDRESS (dll, EnumProcessModulesEx); | |
1153 | #endif | |
255e7678 DJ |
1154 | win32_GetModuleInformation = |
1155 | GETPROCADDRESS (dll, GetModuleInformation); | |
1156 | win32_GetModuleFileNameExA = | |
1157 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
1158 | } | |
1159 | ||
7d186bc0 HD |
1160 | #ifdef __x86_64__ |
1161 | if (wow64_process && win32_EnumProcessModulesEx == nullptr) | |
1162 | return FALSE; | |
1163 | #endif | |
1164 | ||
255e7678 DJ |
1165 | return (win32_EnumProcessModules != NULL |
1166 | && win32_GetModuleInformation != NULL | |
1167 | && win32_GetModuleFileNameExA != NULL); | |
1168 | } | |
1169 | ||
379a5e2d | 1170 | #ifndef _WIN32_WCE |
649ebbca | 1171 | |
f25b3fc3 JB |
1172 | /* Iterate over all DLLs currently mapped by our inferior, and |
1173 | add them to our list of solibs. */ | |
379a5e2d JB |
1174 | |
1175 | static void | |
f25b3fc3 | 1176 | win32_add_all_dlls (void) |
379a5e2d | 1177 | { |
379a5e2d JB |
1178 | size_t i; |
1179 | HMODULE dh_buf[1]; | |
1180 | HMODULE *DllHandle = dh_buf; | |
1181 | DWORD cbNeeded; | |
1182 | BOOL ok; | |
1183 | ||
379a5e2d JB |
1184 | if (!load_psapi ()) |
1185 | return; | |
1186 | ||
1187 | cbNeeded = 0; | |
7d186bc0 HD |
1188 | #ifdef __x86_64__ |
1189 | if (wow64_process) | |
1190 | ok = (*win32_EnumProcessModulesEx) (current_process_handle, | |
1191 | DllHandle, | |
1192 | sizeof (HMODULE), | |
1193 | &cbNeeded, | |
1194 | LIST_MODULES_32BIT); | |
1195 | else | |
1196 | #endif | |
1197 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1198 | DllHandle, | |
1199 | sizeof (HMODULE), | |
1200 | &cbNeeded); | |
379a5e2d JB |
1201 | |
1202 | if (!ok || !cbNeeded) | |
1203 | return; | |
1204 | ||
1205 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
1206 | if (!DllHandle) | |
1207 | return; | |
1208 | ||
7d186bc0 HD |
1209 | #ifdef __x86_64__ |
1210 | if (wow64_process) | |
1211 | ok = (*win32_EnumProcessModulesEx) (current_process_handle, | |
1212 | DllHandle, | |
1213 | cbNeeded, | |
1214 | &cbNeeded, | |
1215 | LIST_MODULES_32BIT); | |
1216 | else | |
1217 | #endif | |
1218 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1219 | DllHandle, | |
1220 | cbNeeded, | |
1221 | &cbNeeded); | |
379a5e2d JB |
1222 | if (!ok) |
1223 | return; | |
1224 | ||
7d186bc0 HD |
1225 | char system_dir[MAX_PATH]; |
1226 | char syswow_dir[MAX_PATH]; | |
1227 | size_t system_dir_len = 0; | |
1228 | bool convert_syswow_dir = false; | |
1229 | #ifdef __x86_64__ | |
1230 | if (wow64_process) | |
1231 | #endif | |
1232 | { | |
1233 | /* This fails on 32bit Windows because it has no SysWOW64 directory, | |
1234 | and in this case a path conversion isn't necessary. */ | |
1235 | UINT len = GetSystemWow64DirectoryA (syswow_dir, sizeof (syswow_dir)); | |
1236 | if (len > 0) | |
1237 | { | |
1238 | /* Check that we have passed a large enough buffer. */ | |
1239 | gdb_assert (len < sizeof (syswow_dir)); | |
1240 | ||
1241 | len = GetSystemDirectoryA (system_dir, sizeof (system_dir)); | |
1242 | /* Error check. */ | |
1243 | gdb_assert (len != 0); | |
1244 | /* Check that we have passed a large enough buffer. */ | |
1245 | gdb_assert (len < sizeof (system_dir)); | |
1246 | ||
1247 | strcat (system_dir, "\\"); | |
1248 | strcat (syswow_dir, "\\"); | |
1249 | system_dir_len = strlen (system_dir); | |
1250 | ||
1251 | convert_syswow_dir = true; | |
1252 | } | |
1253 | ||
1254 | } | |
1255 | ||
f25b3fc3 | 1256 | for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) |
379a5e2d JB |
1257 | { |
1258 | MODULEINFO mi; | |
1259 | char dll_name[MAX_PATH]; | |
1260 | ||
1261 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
1262 | DllHandle[i], | |
1263 | &mi, | |
1264 | sizeof (mi))) | |
1265 | continue; | |
1266 | if ((*win32_GetModuleFileNameExA) (current_process_handle, | |
1267 | DllHandle[i], | |
1268 | dll_name, | |
1269 | MAX_PATH) == 0) | |
1270 | continue; | |
7d186bc0 HD |
1271 | |
1272 | const char *name = dll_name; | |
1273 | /* Convert the DLL path of 32bit processes returned by | |
1274 | GetModuleFileNameEx from the 64bit system directory to the | |
1275 | 32bit syswow64 directory if necessary. */ | |
1276 | std::string syswow_dll_path; | |
1277 | if (convert_syswow_dir | |
1278 | && strncasecmp (dll_name, system_dir, system_dir_len) == 0 | |
1279 | && strchr (dll_name + system_dir_len, '\\') == nullptr) | |
1280 | { | |
1281 | syswow_dll_path = syswow_dir; | |
1282 | syswow_dll_path += dll_name + system_dir_len; | |
1283 | name = syswow_dll_path.c_str(); | |
1284 | } | |
1285 | ||
1286 | win32_add_one_solib (name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll); | |
379a5e2d JB |
1287 | } |
1288 | } | |
1289 | #endif | |
1290 | ||
255e7678 DJ |
1291 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); |
1292 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
1293 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
1294 | ||
a816ba18 | 1295 | /* See nat/windows-nat.h. */ |
255e7678 | 1296 | |
a816ba18 TT |
1297 | void |
1298 | windows_nat::handle_load_dll () | |
255e7678 DJ |
1299 | { |
1300 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
9d8679cc | 1301 | const char *dll_name; |
255e7678 | 1302 | |
d763de10 JB |
1303 | dll_name = get_image_name (current_process_handle, |
1304 | event->lpImageName, event->fUnicode); | |
255e7678 DJ |
1305 | if (!dll_name) |
1306 | return; | |
1307 | ||
850a0f76 | 1308 | win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) event->lpBaseOfDll); |
255e7678 DJ |
1309 | } |
1310 | ||
a816ba18 | 1311 | /* See nat/windows-nat.h. */ |
f25b3fc3 | 1312 | |
a816ba18 TT |
1313 | void |
1314 | windows_nat::handle_unload_dll () | |
255e7678 DJ |
1315 | { |
1316 | CORE_ADDR load_addr = | |
e8f0053d | 1317 | (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll; |
850a0f76 JB |
1318 | |
1319 | /* The symbols in a dll are offset by 0x1000, which is the | |
1320 | offset from 0 of the first byte in an image - because | |
1321 | of the file header and the section alignment. */ | |
255e7678 DJ |
1322 | load_addr += 0x1000; |
1323 | unloaded_dll (NULL, load_addr); | |
1324 | } | |
1325 | ||
34b34921 | 1326 | static void |
9c80ecd6 | 1327 | suspend_one_thread (thread_info *thread) |
4d5d1aaa | 1328 | { |
e56f8ccb | 1329 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
4d5d1aaa | 1330 | |
98a03287 | 1331 | th->suspend (); |
4d5d1aaa PA |
1332 | } |
1333 | ||
1334 | static void | |
1335 | fake_breakpoint_event (void) | |
b80864fb | 1336 | { |
4d5d1aaa | 1337 | OUTMSG2(("fake_breakpoint_event\n")); |
b80864fb | 1338 | |
4d5d1aaa PA |
1339 | faked_breakpoint = 1; |
1340 | ||
1341 | memset (¤t_event, 0, sizeof (current_event)); | |
1342 | current_event.dwThreadId = main_thread_id; | |
1343 | current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT; | |
1344 | current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1345 | = EXCEPTION_BREAKPOINT; | |
1346 | ||
f0045347 | 1347 | for_each_thread (suspend_one_thread); |
4d5d1aaa PA |
1348 | } |
1349 | ||
b65d95c5 DJ |
1350 | #ifdef _WIN32_WCE |
1351 | static int | |
1352 | auto_delete_breakpoint (CORE_ADDR stop_pc) | |
1353 | { | |
1354 | return 1; | |
1355 | } | |
1356 | #endif | |
1357 | ||
8d30e395 TT |
1358 | /* See nat/windows-nat.h. */ |
1359 | ||
1360 | bool | |
1361 | windows_nat::handle_ms_vc_exception (const EXCEPTION_RECORD *rec) | |
1362 | { | |
1363 | return false; | |
1364 | } | |
1365 | ||
a010605f TT |
1366 | /* See nat/windows-nat.h. */ |
1367 | ||
1368 | bool | |
1369 | windows_nat::handle_access_violation (const EXCEPTION_RECORD *rec) | |
1370 | { | |
1371 | return false; | |
1372 | } | |
1373 | ||
523d4f80 TT |
1374 | /* A helper function that will, if needed, set |
1375 | 'stopped_at_software_breakpoint' on the thread and adjust the | |
1376 | PC. */ | |
1377 | ||
1378 | static void | |
1379 | maybe_adjust_pc () | |
1380 | { | |
1381 | struct regcache *regcache = get_thread_regcache (current_thread, 1); | |
1382 | child_fetch_inferior_registers (regcache, -1); | |
1383 | ||
1384 | windows_thread_info *th = thread_rec (current_thread_ptid (), | |
1385 | DONT_INVALIDATE_CONTEXT); | |
1386 | th->stopped_at_software_breakpoint = false; | |
1387 | ||
1388 | if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT | |
7d186bc0 HD |
1389 | && ((current_event.u.Exception.ExceptionRecord.ExceptionCode |
1390 | == EXCEPTION_BREAKPOINT) | |
1391 | || (current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1392 | == STATUS_WX86_BREAKPOINT)) | |
523d4f80 TT |
1393 | && child_initialization_done) |
1394 | { | |
1395 | th->stopped_at_software_breakpoint = true; | |
1396 | CORE_ADDR pc = regcache_read_pc (regcache); | |
1397 | CORE_ADDR sw_breakpoint_pc = pc - the_low_target.decr_pc_after_break; | |
1398 | regcache_write_pc (regcache, sw_breakpoint_pc); | |
1399 | } | |
1400 | } | |
1401 | ||
4d5d1aaa PA |
1402 | /* Get the next event from the child. */ |
1403 | ||
1404 | static int | |
8d30e395 TT |
1405 | get_child_debug_event (DWORD *continue_status, |
1406 | struct target_waitstatus *ourstatus) | |
4d5d1aaa | 1407 | { |
95954743 PA |
1408 | ptid_t ptid; |
1409 | ||
a493e3e2 | 1410 | last_sig = GDB_SIGNAL_0; |
b80864fb | 1411 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8d30e395 | 1412 | *continue_status = DBG_CONTINUE; |
b80864fb | 1413 | |
4d5d1aaa PA |
1414 | /* Check if GDB sent us an interrupt request. */ |
1415 | check_remote_input_interrupt_request (); | |
1416 | ||
1417 | if (soft_interrupt_requested) | |
1418 | { | |
1419 | soft_interrupt_requested = 0; | |
1420 | fake_breakpoint_event (); | |
1421 | goto gotevent; | |
1422 | } | |
1423 | ||
d97903b2 PA |
1424 | #ifndef _WIN32_WCE |
1425 | attaching = 0; | |
1426 | #else | |
1427 | if (attaching) | |
1428 | { | |
1429 | /* WinCE doesn't set an initial breakpoint automatically. To | |
1b3f6016 PA |
1430 | stop the inferior, we flush all currently pending debug |
1431 | events -- the thread list and the dll list are always | |
1432 | reported immediatelly without delay, then, we suspend all | |
1433 | threads and pretend we saw a trap at the current PC of the | |
1434 | main thread. | |
1435 | ||
1436 | Contrary to desktop Windows, Windows CE *does* report the dll | |
1437 | names on LOAD_DLL_DEBUG_EVENTs resulting from a | |
1438 | DebugActiveProcess call. This limits the way we can detect | |
1439 | if all the dlls have already been reported. If we get a real | |
1440 | debug event before leaving attaching, the worst that will | |
1441 | happen is the user will see a spurious breakpoint. */ | |
d97903b2 PA |
1442 | |
1443 | current_event.dwDebugEventCode = 0; | |
2c1d95e8 | 1444 | if (!wait_for_debug_event (¤t_event, 0)) |
1b3f6016 PA |
1445 | { |
1446 | OUTMSG2(("no attach events left\n")); | |
1447 | fake_breakpoint_event (); | |
1448 | attaching = 0; | |
1449 | } | |
d97903b2 | 1450 | else |
1b3f6016 | 1451 | OUTMSG2(("got attach event\n")); |
d97903b2 PA |
1452 | } |
1453 | else | |
1454 | #endif | |
1455 | { | |
360ad8b3 TT |
1456 | gdb::optional<pending_stop> stop = fetch_pending_stop (debug_threads); |
1457 | if (stop.has_value ()) | |
1458 | { | |
1459 | *ourstatus = stop->status; | |
1460 | current_event = stop->event; | |
1461 | ptid = debug_event_ptid (¤t_event); | |
1462 | current_thread = find_thread_ptid (ptid); | |
1463 | return 1; | |
1464 | } | |
1465 | ||
30baf67b | 1466 | /* Keep the wait time low enough for comfortable remote |
1b3f6016 PA |
1467 | interruption, but high enough so gdbserver doesn't become a |
1468 | bottleneck. */ | |
2c1d95e8 | 1469 | if (!wait_for_debug_event (¤t_event, 250)) |
912cf4ba PA |
1470 | { |
1471 | DWORD e = GetLastError(); | |
1472 | ||
1473 | if (e == ERROR_PIPE_NOT_CONNECTED) | |
1474 | { | |
1475 | /* This will happen if the loader fails to succesfully | |
1476 | load the application, e.g., if the main executable | |
1477 | tries to pull in a non-existing export from a | |
1478 | DLL. */ | |
1479 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1480 | ourstatus->value.integer = 1; | |
1481 | return 1; | |
1482 | } | |
1483 | ||
1484 | return 0; | |
1485 | } | |
d97903b2 | 1486 | } |
4d5d1aaa PA |
1487 | |
1488 | gotevent: | |
b80864fb | 1489 | |
34b34921 | 1490 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1491 | { |
1492 | case CREATE_THREAD_DEBUG_EVENT: | |
1493 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
dfe07582 | 1494 | "for pid=%u tid=%x)\n", |
b80864fb DJ |
1495 | (unsigned) current_event.dwProcessId, |
1496 | (unsigned) current_event.dwThreadId)); | |
1497 | ||
1498 | /* Record the existence of this thread. */ | |
95954743 PA |
1499 | child_add_thread (current_event.dwProcessId, |
1500 | current_event.dwThreadId, | |
711e434b PM |
1501 | current_event.u.CreateThread.hThread, |
1502 | current_event.u.CreateThread.lpThreadLocalBase); | |
b80864fb DJ |
1503 | break; |
1504 | ||
1505 | case EXIT_THREAD_DEBUG_EVENT: | |
1506 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
dfe07582 | 1507 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1508 | (unsigned) current_event.dwProcessId, |
1509 | (unsigned) current_event.dwThreadId)); | |
95954743 PA |
1510 | child_delete_thread (current_event.dwProcessId, |
1511 | current_event.dwThreadId); | |
aeeb81d1 | 1512 | |
9c80ecd6 | 1513 | current_thread = get_first_thread (); |
aeeb81d1 | 1514 | return 1; |
b80864fb DJ |
1515 | |
1516 | case CREATE_PROCESS_DEBUG_EVENT: | |
1517 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1518 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1519 | (unsigned) current_event.dwProcessId, |
1520 | (unsigned) current_event.dwThreadId)); | |
1521 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1522 | ||
6479bf85 HD |
1523 | if (open_process_used) |
1524 | { | |
1525 | CloseHandle (current_process_handle); | |
1526 | open_process_used = false; | |
1527 | } | |
1528 | ||
b80864fb DJ |
1529 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
1530 | main_thread_id = current_event.dwThreadId; | |
1531 | ||
b80864fb | 1532 | /* Add the main thread. */ |
95954743 PA |
1533 | child_add_thread (current_event.dwProcessId, |
1534 | main_thread_id, | |
711e434b PM |
1535 | current_event.u.CreateProcessInfo.hThread, |
1536 | current_event.u.CreateProcessInfo.lpThreadLocalBase); | |
b80864fb | 1537 | |
ed50f18f | 1538 | #ifdef _WIN32_WCE |
d97903b2 PA |
1539 | if (!attaching) |
1540 | { | |
1541 | /* Windows CE doesn't set the initial breakpoint | |
1542 | automatically like the desktop versions of Windows do. | |
1543 | We add it explicitly here. It will be removed as soon as | |
1544 | it is hit. */ | |
1545 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1546 | .CreateProcessInfo.lpStartAddress, | |
b65d95c5 | 1547 | auto_delete_breakpoint); |
d97903b2 | 1548 | } |
ed50f18f | 1549 | #endif |
b80864fb DJ |
1550 | break; |
1551 | ||
1552 | case EXIT_PROCESS_DEBUG_EVENT: | |
1553 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1554 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1555 | (unsigned) current_event.dwProcessId, |
1556 | (unsigned) current_event.dwThreadId)); | |
559e7e50 EZ |
1557 | { |
1558 | DWORD exit_status = current_event.u.ExitProcess.dwExitCode; | |
1559 | /* If the exit status looks like a fatal exception, but we | |
1560 | don't recognize the exception's code, make the original | |
1561 | exit status value available, to avoid losing information. */ | |
1562 | int exit_signal | |
1563 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1564 | if (exit_signal == -1) | |
1565 | { | |
1566 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1567 | ourstatus->value.integer = exit_status; | |
1568 | } | |
1569 | else | |
1570 | { | |
1571 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1572 | ourstatus->value.sig = gdb_signal_from_host (exit_signal); | |
1573 | } | |
1574 | } | |
360ad8b3 | 1575 | child_continue (DBG_CONTINUE, desired_stop_thread_id); |
b80864fb DJ |
1576 | break; |
1577 | ||
1578 | case LOAD_DLL_DEBUG_EVENT: | |
1579 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1580 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1581 | (unsigned) current_event.dwProcessId, |
1582 | (unsigned) current_event.dwThreadId)); | |
1583 | CloseHandle (current_event.u.LoadDll.hFile); | |
f25b3fc3 JB |
1584 | if (! child_initialization_done) |
1585 | break; | |
255e7678 | 1586 | handle_load_dll (); |
b80864fb DJ |
1587 | |
1588 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1589 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1590 | break; |
1591 | ||
1592 | case UNLOAD_DLL_DEBUG_EVENT: | |
1593 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1594 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1595 | (unsigned) current_event.dwProcessId, |
1596 | (unsigned) current_event.dwThreadId)); | |
f25b3fc3 JB |
1597 | if (! child_initialization_done) |
1598 | break; | |
255e7678 DJ |
1599 | handle_unload_dll (); |
1600 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1601 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1602 | break; |
1603 | ||
1604 | case EXCEPTION_DEBUG_EVENT: | |
1605 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
dfe07582 | 1606 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1607 | (unsigned) current_event.dwProcessId, |
1608 | (unsigned) current_event.dwThreadId)); | |
8d30e395 TT |
1609 | if (handle_exception (ourstatus, debug_threads) |
1610 | == HANDLE_EXCEPTION_UNHANDLED) | |
1611 | *continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
b80864fb DJ |
1612 | break; |
1613 | ||
1614 | case OUTPUT_DEBUG_STRING_EVENT: | |
1615 | /* A message from the kernel (or Cygwin). */ | |
1616 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
dfe07582 | 1617 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1618 | (unsigned) current_event.dwProcessId, |
1619 | (unsigned) current_event.dwThreadId)); | |
d41b524f | 1620 | handle_output_debug_string (nullptr); |
b80864fb DJ |
1621 | break; |
1622 | ||
1623 | default: | |
1624 | OUTMSG2 (("gdbserver: kernel event unknown " | |
dfe07582 | 1625 | "for pid=%u tid=%x code=%x\n", |
b80864fb DJ |
1626 | (unsigned) current_event.dwProcessId, |
1627 | (unsigned) current_event.dwThreadId, | |
dfe07582 | 1628 | (unsigned) current_event.dwDebugEventCode)); |
b80864fb DJ |
1629 | break; |
1630 | } | |
1631 | ||
aeeb81d1 | 1632 | ptid = debug_event_ptid (¤t_event); |
360ad8b3 TT |
1633 | |
1634 | if (desired_stop_thread_id != -1 && desired_stop_thread_id != ptid.lwp ()) | |
1635 | { | |
1636 | /* Pending stop. See the comment by the definition of | |
1637 | "pending_stops" for details on why this is needed. */ | |
1638 | OUTMSG2 (("get_windows_debug_event - " | |
e2275c6e | 1639 | "unexpected stop in 0x%lx (expecting 0x%x)\n", |
360ad8b3 TT |
1640 | ptid.lwp (), desired_stop_thread_id)); |
1641 | maybe_adjust_pc (); | |
1642 | pending_stops.push_back ({(DWORD) ptid.lwp (), *ourstatus, current_event}); | |
1643 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1644 | } | |
1645 | else | |
1646 | current_thread = find_thread_ptid (ptid); | |
1647 | ||
4d5d1aaa | 1648 | return 1; |
b80864fb DJ |
1649 | } |
1650 | ||
1651 | /* Wait for the inferior process to change state. | |
1652 | STATUS will be filled in with a response code to send to GDB. | |
1653 | Returns the signal which caused the process to stop. */ | |
6532e7e3 TBA |
1654 | ptid_t |
1655 | win32_process_target::wait (ptid_t ptid, target_waitstatus *ourstatus, | |
1656 | int options) | |
b80864fb | 1657 | { |
4210d83e PA |
1658 | if (cached_status.kind != TARGET_WAITKIND_IGNORE) |
1659 | { | |
1660 | /* The core always does a wait after creating the inferior, and | |
1661 | do_initial_child_stuff already ran the inferior to the | |
1662 | initial breakpoint (or an exit, if creating the process | |
1663 | fails). Report it now. */ | |
1664 | *ourstatus = cached_status; | |
1665 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
1666 | return debug_event_ptid (¤t_event); | |
1667 | } | |
1668 | ||
b80864fb DJ |
1669 | while (1) |
1670 | { | |
8d30e395 TT |
1671 | DWORD continue_status; |
1672 | if (!get_child_debug_event (&continue_status, ourstatus)) | |
4d5d1aaa | 1673 | continue; |
b80864fb | 1674 | |
5b1c542e | 1675 | switch (ourstatus->kind) |
b80864fb | 1676 | { |
34b34921 | 1677 | case TARGET_WAITKIND_EXITED: |
b80864fb | 1678 | OUTMSG2 (("Child exited with retcode = %x\n", |
5b1c542e | 1679 | ourstatus->value.integer)); |
5ac588cf | 1680 | win32_clear_inferiors (); |
f2907e49 | 1681 | return ptid_t (current_event.dwProcessId); |
34b34921 | 1682 | case TARGET_WAITKIND_STOPPED: |
559e7e50 | 1683 | case TARGET_WAITKIND_SIGNALLED: |
1b3f6016 | 1684 | case TARGET_WAITKIND_LOADED: |
523d4f80 TT |
1685 | { |
1686 | OUTMSG2 (("Child Stopped with signal = %d \n", | |
1687 | ourstatus->value.sig)); | |
1688 | maybe_adjust_pc (); | |
1689 | return debug_event_ptid (¤t_event); | |
1690 | } | |
1b3f6016 | 1691 | default: |
5b1c542e | 1692 | OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind)); |
1b3f6016 PA |
1693 | /* fall-through */ |
1694 | case TARGET_WAITKIND_SPURIOUS: | |
34b34921 | 1695 | /* do nothing, just continue */ |
360ad8b3 | 1696 | child_continue (continue_status, desired_stop_thread_id); |
34b34921 | 1697 | break; |
b80864fb | 1698 | } |
b80864fb DJ |
1699 | } |
1700 | } | |
1701 | ||
1702 | /* Fetch registers from the inferior process. | |
1703 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
a5a4d4cd TBA |
1704 | void |
1705 | win32_process_target::fetch_registers (regcache *regcache, int regno) | |
b80864fb | 1706 | { |
442ea881 | 1707 | child_fetch_inferior_registers (regcache, regno); |
b80864fb DJ |
1708 | } |
1709 | ||
1710 | /* Store registers to the inferior process. | |
1711 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
a5a4d4cd TBA |
1712 | void |
1713 | win32_process_target::store_registers (regcache *regcache, int regno) | |
b80864fb | 1714 | { |
442ea881 | 1715 | child_store_inferior_registers (regcache, regno); |
b80864fb DJ |
1716 | } |
1717 | ||
1718 | /* Read memory from the inferior process. This should generally be | |
1719 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1720 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
e2558df3 TBA |
1721 | int |
1722 | win32_process_target::read_memory (CORE_ADDR memaddr, unsigned char *myaddr, | |
1723 | int len) | |
b80864fb | 1724 | { |
ed50f18f | 1725 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1726 | } |
1727 | ||
1728 | /* Write memory to the inferior process. This should generally be | |
1729 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1730 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1731 | Returns 0 on success and errno on failure. */ | |
e2558df3 TBA |
1732 | int |
1733 | win32_process_target::write_memory (CORE_ADDR memaddr, | |
1734 | const unsigned char *myaddr, int len) | |
b80864fb DJ |
1735 | { |
1736 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1737 | } | |
1738 | ||
7390519e | 1739 | /* Send an interrupt request to the inferior process. */ |
eb497a2a TBA |
1740 | void |
1741 | win32_process_target::request_interrupt () | |
7390519e PA |
1742 | { |
1743 | winapi_DebugBreakProcess DebugBreakProcess; | |
1744 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1745 | ||
1746 | #ifdef _WIN32_WCE | |
1747 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1748 | #else | |
1749 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1750 | #endif | |
1751 | ||
1752 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1753 | ||
1754 | if (GenerateConsoleCtrlEvent != NULL | |
1755 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1756 | return; | |
1757 | ||
1758 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1759 | not a process group id. | |
1760 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1761 | breakpoint exception in the interior process. */ | |
1762 | ||
1763 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1764 | ||
1765 | if (DebugBreakProcess != NULL | |
1766 | && DebugBreakProcess (current_process_handle)) | |
1767 | return; | |
1768 | ||
4d5d1aaa PA |
1769 | /* Last resort, suspend all threads manually. */ |
1770 | soft_interrupt_requested = 1; | |
7390519e PA |
1771 | } |
1772 | ||
22aa6223 TBA |
1773 | bool |
1774 | win32_process_target::supports_hardware_single_step () | |
1775 | { | |
1776 | return true; | |
1777 | } | |
1778 | ||
59a016f0 PA |
1779 | #ifdef _WIN32_WCE |
1780 | int | |
1781 | win32_error_to_fileio_error (DWORD err) | |
1782 | { | |
1783 | switch (err) | |
1784 | { | |
1785 | case ERROR_BAD_PATHNAME: | |
1786 | case ERROR_FILE_NOT_FOUND: | |
1787 | case ERROR_INVALID_NAME: | |
1788 | case ERROR_PATH_NOT_FOUND: | |
1789 | return FILEIO_ENOENT; | |
1790 | case ERROR_CRC: | |
1791 | case ERROR_IO_DEVICE: | |
1792 | case ERROR_OPEN_FAILED: | |
1793 | return FILEIO_EIO; | |
1794 | case ERROR_INVALID_HANDLE: | |
1795 | return FILEIO_EBADF; | |
1796 | case ERROR_ACCESS_DENIED: | |
1797 | case ERROR_SHARING_VIOLATION: | |
1798 | return FILEIO_EACCES; | |
1799 | case ERROR_NOACCESS: | |
1800 | return FILEIO_EFAULT; | |
1801 | case ERROR_BUSY: | |
1802 | return FILEIO_EBUSY; | |
1803 | case ERROR_ALREADY_EXISTS: | |
1804 | case ERROR_FILE_EXISTS: | |
1805 | return FILEIO_EEXIST; | |
1806 | case ERROR_BAD_DEVICE: | |
1807 | return FILEIO_ENODEV; | |
1808 | case ERROR_DIRECTORY: | |
1809 | return FILEIO_ENOTDIR; | |
1810 | case ERROR_FILENAME_EXCED_RANGE: | |
1811 | case ERROR_INVALID_DATA: | |
1812 | case ERROR_INVALID_PARAMETER: | |
1813 | case ERROR_NEGATIVE_SEEK: | |
1814 | return FILEIO_EINVAL; | |
1815 | case ERROR_TOO_MANY_OPEN_FILES: | |
1816 | return FILEIO_EMFILE; | |
1817 | case ERROR_HANDLE_DISK_FULL: | |
1818 | case ERROR_DISK_FULL: | |
1819 | return FILEIO_ENOSPC; | |
1820 | case ERROR_WRITE_PROTECT: | |
1821 | return FILEIO_EROFS; | |
1822 | case ERROR_NOT_SUPPORTED: | |
1823 | return FILEIO_ENOSYS; | |
1824 | } | |
1825 | ||
1826 | return FILEIO_EUNKNOWN; | |
1827 | } | |
1828 | ||
ea06bbaa TBA |
1829 | void |
1830 | win32_process_target::hostio_last_error (char *buf) | |
59a016f0 PA |
1831 | { |
1832 | DWORD winerr = GetLastError (); | |
1833 | int fileio_err = win32_error_to_fileio_error (winerr); | |
1834 | sprintf (buf, "F-1,%x", fileio_err); | |
1835 | } | |
1836 | #endif | |
1837 | ||
d7abedf7 TBA |
1838 | bool |
1839 | win32_process_target::supports_qxfer_siginfo () | |
1840 | { | |
1841 | return true; | |
1842 | } | |
1843 | ||
7928d571 HD |
1844 | /* Write Windows signal info. */ |
1845 | ||
d7abedf7 TBA |
1846 | int |
1847 | win32_process_target::qxfer_siginfo (const char *annex, | |
1848 | unsigned char *readbuf, | |
1849 | unsigned const char *writebuf, | |
1850 | CORE_ADDR offset, int len) | |
7928d571 HD |
1851 | { |
1852 | if (siginfo_er.ExceptionCode == 0) | |
1853 | return -1; | |
1854 | ||
1855 | if (readbuf == nullptr) | |
1856 | return -1; | |
1857 | ||
7d186bc0 HD |
1858 | char *buf = (char *) &siginfo_er; |
1859 | size_t bufsize = sizeof (siginfo_er); | |
1860 | ||
1861 | #ifdef __x86_64__ | |
1862 | EXCEPTION_RECORD32 er32; | |
1863 | if (wow64_process) | |
1864 | { | |
1865 | buf = (char *) &er32; | |
1866 | bufsize = sizeof (er32); | |
1867 | ||
1868 | er32.ExceptionCode = siginfo_er.ExceptionCode; | |
1869 | er32.ExceptionFlags = siginfo_er.ExceptionFlags; | |
1870 | er32.ExceptionRecord = (uintptr_t) siginfo_er.ExceptionRecord; | |
1871 | er32.ExceptionAddress = (uintptr_t) siginfo_er.ExceptionAddress; | |
1872 | er32.NumberParameters = siginfo_er.NumberParameters; | |
1873 | int i; | |
1874 | for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++) | |
1875 | er32.ExceptionInformation[i] = siginfo_er.ExceptionInformation[i]; | |
1876 | } | |
1877 | #endif | |
1878 | ||
1879 | if (offset > bufsize) | |
7928d571 HD |
1880 | return -1; |
1881 | ||
7d186bc0 HD |
1882 | if (offset + len > bufsize) |
1883 | len = bufsize - offset; | |
7928d571 | 1884 | |
7d186bc0 | 1885 | memcpy (readbuf, buf + offset, len); |
7928d571 HD |
1886 | |
1887 | return len; | |
1888 | } | |
1889 | ||
4e2e869c TBA |
1890 | bool |
1891 | win32_process_target::supports_get_tib_address () | |
1892 | { | |
1893 | return true; | |
1894 | } | |
1895 | ||
711e434b PM |
1896 | /* Write Windows OS Thread Information Block address. */ |
1897 | ||
4e2e869c TBA |
1898 | int |
1899 | win32_process_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
711e434b | 1900 | { |
e56f8ccb | 1901 | windows_thread_info *th; |
28688adf | 1902 | th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
711e434b PM |
1903 | if (th == NULL) |
1904 | return 0; | |
1905 | if (addr != NULL) | |
1906 | *addr = th->thread_local_base; | |
1907 | return 1; | |
1908 | } | |
1909 | ||
fb78e89c AT |
1910 | /* Implementation of the target_ops method "sw_breakpoint_from_kind". */ |
1911 | ||
d367006f TBA |
1912 | const gdb_byte * |
1913 | win32_process_target::sw_breakpoint_from_kind (int kind, int *size) | |
fb78e89c AT |
1914 | { |
1915 | *size = the_low_target.breakpoint_len; | |
1916 | return the_low_target.breakpoint; | |
1917 | } | |
1918 | ||
523d4f80 TT |
1919 | bool |
1920 | win32_process_target::stopped_by_sw_breakpoint () | |
1921 | { | |
1922 | windows_thread_info *th = thread_rec (current_thread_ptid (), | |
1923 | DONT_INVALIDATE_CONTEXT); | |
1924 | return th == nullptr ? false : th->stopped_at_software_breakpoint; | |
1925 | } | |
1926 | ||
1927 | bool | |
1928 | win32_process_target::supports_stopped_by_sw_breakpoint () | |
1929 | { | |
1930 | return true; | |
1931 | } | |
1932 | ||
d6225aff TT |
1933 | CORE_ADDR |
1934 | win32_process_target::read_pc (struct regcache *regcache) | |
1935 | { | |
1936 | return (*the_low_target.get_pc) (regcache); | |
1937 | } | |
1938 | ||
1939 | void | |
1940 | win32_process_target::write_pc (struct regcache *regcache, CORE_ADDR pc) | |
1941 | { | |
1942 | return (*the_low_target.set_pc) (regcache, pc); | |
1943 | } | |
1944 | ||
5ef9273d TBA |
1945 | /* The win32 target ops object. */ |
1946 | ||
1947 | static win32_process_target the_win32_target; | |
1948 | ||
b80864fb DJ |
1949 | /* Initialize the Win32 backend. */ |
1950 | void | |
1951 | initialize_low (void) | |
1952 | { | |
52405d85 | 1953 | set_target_ops (&the_win32_target); |
d05b4ac3 | 1954 | the_low_target.arch_setup (); |
7d186bc0 HD |
1955 | |
1956 | #ifdef __x86_64__ | |
1957 | /* These functions are loaded dynamically, because they are not available | |
1958 | on Windows XP. */ | |
1959 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1960 | win32_Wow64GetThreadContext = GETPROCADDRESS (dll, Wow64GetThreadContext); | |
1961 | win32_Wow64SetThreadContext = GETPROCADDRESS (dll, Wow64SetThreadContext); | |
1962 | #endif | |
b80864fb | 1963 | } |