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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 | ||
7d186bc0 HD |
91 | #ifdef __x86_64__ |
92 | bool wow64_process = false; | |
93 | #endif | |
94 | ||
3aee8918 | 95 | const struct target_desc *win32_tdesc; |
7d186bc0 HD |
96 | #ifdef __x86_64__ |
97 | const struct target_desc *wow64_win32_tdesc; | |
98 | #endif | |
3aee8918 | 99 | |
7d186bc0 | 100 | #define NUM_REGS (the_low_target.num_regs ()) |
b80864fb | 101 | |
7a9a7487 MG |
102 | typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
103 | typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
104 | typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE); | |
105 | typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); | |
b80864fb | 106 | |
7d186bc0 HD |
107 | #ifdef __x86_64__ |
108 | typedef BOOL (WINAPI *winapi_Wow64SetThreadContext) (HANDLE, | |
109 | const WOW64_CONTEXT *); | |
110 | ||
111 | winapi_Wow64GetThreadContext win32_Wow64GetThreadContext; | |
112 | static winapi_Wow64SetThreadContext win32_Wow64SetThreadContext; | |
113 | #endif | |
114 | ||
379a5e2d | 115 | #ifndef _WIN32_WCE |
f25b3fc3 | 116 | static void win32_add_all_dlls (void); |
379a5e2d | 117 | #endif |
34b34921 | 118 | |
b80864fb DJ |
119 | /* Get the thread ID from the current selected inferior (the current |
120 | thread). */ | |
95954743 | 121 | static ptid_t |
0bfdf32f | 122 | current_thread_ptid (void) |
b80864fb | 123 | { |
80894984 | 124 | return current_ptid; |
95954743 PA |
125 | } |
126 | ||
127 | /* The current debug event from WaitForDebugEvent. */ | |
128 | static ptid_t | |
129 | debug_event_ptid (DEBUG_EVENT *event) | |
130 | { | |
fd79271b | 131 | return ptid_t (event->dwProcessId, event->dwThreadId, 0); |
b80864fb DJ |
132 | } |
133 | ||
9c6c8194 PA |
134 | /* Get the thread context of the thread associated with TH. */ |
135 | ||
136 | static void | |
e56f8ccb | 137 | win32_get_thread_context (windows_thread_info *th) |
9c6c8194 | 138 | { |
7d186bc0 HD |
139 | #ifdef __x86_64__ |
140 | if (wow64_process) | |
141 | memset (&th->wow64_context, 0, sizeof (WOW64_CONTEXT)); | |
142 | else | |
143 | #endif | |
144 | memset (&th->context, 0, sizeof (CONTEXT)); | |
a2abc7de | 145 | (*the_low_target.get_thread_context) (th); |
9c6c8194 PA |
146 | #ifdef _WIN32_WCE |
147 | memcpy (&th->base_context, &th->context, sizeof (CONTEXT)); | |
148 | #endif | |
149 | } | |
150 | ||
151 | /* Set the thread context of the thread associated with TH. */ | |
152 | ||
153 | static void | |
e56f8ccb | 154 | win32_set_thread_context (windows_thread_info *th) |
9c6c8194 PA |
155 | { |
156 | #ifdef _WIN32_WCE | |
157 | /* Calling SuspendThread on a thread that is running kernel code | |
158 | will report that the suspending was successful, but in fact, that | |
159 | will often not be true. In those cases, the context returned by | |
160 | GetThreadContext will not be correct by the time the thread | |
161 | stops, hence we can't set that context back into the thread when | |
30baf67b | 162 | resuming - it will most likely crash the inferior. |
9c6c8194 PA |
163 | Unfortunately, there is no way to know when the thread will |
164 | really stop. To work around it, we'll only write the context | |
165 | back to the thread when either the user or GDB explicitly change | |
166 | it between stopping and resuming. */ | |
167 | if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0) | |
168 | #endif | |
7d186bc0 HD |
169 | { |
170 | #ifdef __x86_64__ | |
171 | if (wow64_process) | |
172 | win32_Wow64SetThreadContext (th->h, &th->wow64_context); | |
173 | else | |
174 | #endif | |
175 | SetThreadContext (th->h, &th->context); | |
176 | } | |
9c6c8194 PA |
177 | } |
178 | ||
a2abc7de PA |
179 | /* Set the thread context of the thread associated with TH. */ |
180 | ||
181 | static void | |
e56f8ccb | 182 | win32_prepare_to_resume (windows_thread_info *th) |
b80864fb | 183 | { |
a2abc7de PA |
184 | if (the_low_target.prepare_to_resume != NULL) |
185 | (*the_low_target.prepare_to_resume) (th); | |
186 | } | |
b80864fb | 187 | |
a2abc7de | 188 | /* See win32-low.h. */ |
b80864fb | 189 | |
a2abc7de | 190 | void |
e56f8ccb | 191 | win32_require_context (windows_thread_info *th) |
a2abc7de | 192 | { |
7d186bc0 HD |
193 | DWORD context_flags; |
194 | #ifdef __x86_64__ | |
195 | if (wow64_process) | |
196 | context_flags = th->wow64_context.ContextFlags; | |
197 | else | |
198 | #endif | |
199 | context_flags = th->context.ContextFlags; | |
200 | if (context_flags == 0) | |
b80864fb | 201 | { |
98a03287 | 202 | th->suspend (); |
9c6c8194 | 203 | win32_get_thread_context (th); |
b80864fb | 204 | } |
a2abc7de PA |
205 | } |
206 | ||
28688adf TT |
207 | /* See nat/windows-nat.h. */ |
208 | ||
209 | windows_thread_info * | |
210 | windows_nat::thread_rec (ptid_t ptid, thread_disposition_type disposition) | |
a2abc7de | 211 | { |
8dc7b443 | 212 | thread_info *thread = find_thread_ptid (ptid); |
a2abc7de PA |
213 | if (thread == NULL) |
214 | return NULL; | |
215 | ||
e56f8ccb | 216 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
28688adf | 217 | if (disposition != DONT_INVALIDATE_CONTEXT) |
a2abc7de | 218 | win32_require_context (th); |
b80864fb DJ |
219 | return th; |
220 | } | |
221 | ||
222 | /* Add a thread to the thread list. */ | |
e56f8ccb | 223 | static windows_thread_info * |
711e434b | 224 | child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb) |
b80864fb | 225 | { |
e56f8ccb | 226 | windows_thread_info *th; |
fd79271b | 227 | ptid_t ptid = ptid_t (pid, tid, 0); |
b80864fb | 228 | |
28688adf | 229 | if ((th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT))) |
b80864fb DJ |
230 | return th; |
231 | ||
7d186bc0 HD |
232 | CORE_ADDR base = (CORE_ADDR) (uintptr_t) tlb; |
233 | #ifdef __x86_64__ | |
234 | /* For WOW64 processes, this is actually the pointer to the 64bit TIB, | |
235 | and the 32bit TIB is exactly 2 pages after it. */ | |
236 | if (wow64_process) | |
237 | base += 2 * 4096; /* page size = 4096 */ | |
238 | #endif | |
239 | th = new windows_thread_info (tid, h, base); | |
b80864fb | 240 | |
95954743 | 241 | add_thread (ptid, th); |
b80864fb | 242 | |
34b34921 PA |
243 | if (the_low_target.thread_added != NULL) |
244 | (*the_low_target.thread_added) (th); | |
b80864fb DJ |
245 | |
246 | return th; | |
247 | } | |
248 | ||
249 | /* Delete a thread from the list of threads. */ | |
250 | static void | |
9c80ecd6 | 251 | delete_thread_info (thread_info *thread) |
b80864fb | 252 | { |
e56f8ccb | 253 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
b80864fb | 254 | |
c3de4d92 | 255 | remove_thread (thread); |
e9534bd2 | 256 | delete th; |
b80864fb DJ |
257 | } |
258 | ||
259 | /* Delete a thread from the list of threads. */ | |
260 | static void | |
95954743 | 261 | child_delete_thread (DWORD pid, DWORD tid) |
b80864fb | 262 | { |
b80864fb | 263 | /* If the last thread is exiting, just return. */ |
9c80ecd6 | 264 | if (all_threads.size () == 1) |
b80864fb DJ |
265 | return; |
266 | ||
8dc7b443 | 267 | thread_info *thread = find_thread_ptid (ptid_t (pid, tid)); |
b80864fb DJ |
268 | if (thread == NULL) |
269 | return; | |
270 | ||
271 | delete_thread_info (thread); | |
272 | } | |
273 | ||
aa5ca48f DE |
274 | /* These watchpoint related wrapper functions simply pass on the function call |
275 | if the low target has registered a corresponding function. */ | |
276 | ||
a2b2297a TBA |
277 | bool |
278 | win32_process_target::supports_z_point_type (char z_type) | |
802e8e6d | 279 | { |
523d4f80 TT |
280 | return (z_type == Z_PACKET_SW_BP |
281 | || (the_low_target.supports_z_point_type != NULL | |
282 | && the_low_target.supports_z_point_type (z_type))); | |
802e8e6d PA |
283 | } |
284 | ||
7e0bde70 TBA |
285 | int |
286 | win32_process_target::insert_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
287 | int size, raw_breakpoint *bp) | |
aa5ca48f | 288 | { |
523d4f80 TT |
289 | if (type == raw_bkpt_type_sw) |
290 | return insert_memory_breakpoint (bp); | |
291 | else if (the_low_target.insert_point != NULL) | |
802e8e6d | 292 | return the_low_target.insert_point (type, addr, size, bp); |
aa5ca48f DE |
293 | else |
294 | /* Unsupported (see target.h). */ | |
295 | return 1; | |
296 | } | |
297 | ||
7e0bde70 TBA |
298 | int |
299 | win32_process_target::remove_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
300 | int size, raw_breakpoint *bp) | |
aa5ca48f | 301 | { |
523d4f80 TT |
302 | if (type == raw_bkpt_type_sw) |
303 | return remove_memory_breakpoint (bp); | |
304 | else if (the_low_target.remove_point != NULL) | |
802e8e6d | 305 | return the_low_target.remove_point (type, addr, size, bp); |
aa5ca48f DE |
306 | else |
307 | /* Unsupported (see target.h). */ | |
308 | return 1; | |
309 | } | |
310 | ||
6eeb5c55 TBA |
311 | bool |
312 | win32_process_target::stopped_by_watchpoint () | |
aa5ca48f DE |
313 | { |
314 | if (the_low_target.stopped_by_watchpoint != NULL) | |
315 | return the_low_target.stopped_by_watchpoint (); | |
316 | else | |
6eeb5c55 | 317 | return false; |
aa5ca48f DE |
318 | } |
319 | ||
6eeb5c55 TBA |
320 | CORE_ADDR |
321 | win32_process_target::stopped_data_address () | |
aa5ca48f DE |
322 | { |
323 | if (the_low_target.stopped_data_address != NULL) | |
324 | return the_low_target.stopped_data_address (); | |
325 | else | |
326 | return 0; | |
327 | } | |
328 | ||
329 | ||
b80864fb DJ |
330 | /* Transfer memory from/to the debugged process. */ |
331 | static int | |
332 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
5b6d1e4f | 333 | int write, process_stratum_target *target) |
b80864fb | 334 | { |
cee83bcb PM |
335 | BOOL success; |
336 | SIZE_T done = 0; | |
337 | DWORD lasterror = 0; | |
e8f0053d | 338 | uintptr_t addr = (uintptr_t) memaddr; |
b80864fb DJ |
339 | |
340 | if (write) | |
341 | { | |
cee83bcb PM |
342 | success = WriteProcessMemory (current_process_handle, (LPVOID) addr, |
343 | (LPCVOID) our, len, &done); | |
344 | if (!success) | |
345 | lasterror = GetLastError (); | |
b80864fb DJ |
346 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); |
347 | } | |
348 | else | |
349 | { | |
cee83bcb PM |
350 | success = ReadProcessMemory (current_process_handle, (LPCVOID) addr, |
351 | (LPVOID) our, len, &done); | |
352 | if (!success) | |
353 | lasterror = GetLastError (); | |
b80864fb | 354 | } |
cee83bcb PM |
355 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
356 | return done; | |
357 | else | |
358 | return success ? done : -1; | |
b80864fb DJ |
359 | } |
360 | ||
ed50f18f | 361 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
362 | state. */ |
363 | static void | |
364 | child_init_thread_list (void) | |
365 | { | |
f0045347 | 366 | for_each_thread (delete_thread_info); |
b80864fb DJ |
367 | } |
368 | ||
f25b3fc3 JB |
369 | /* Zero during the child initialization phase, and nonzero otherwise. */ |
370 | ||
371 | static int child_initialization_done = 0; | |
372 | ||
b80864fb | 373 | static void |
95954743 | 374 | do_initial_child_stuff (HANDLE proch, DWORD pid, int attached) |
b80864fb | 375 | { |
3aee8918 PA |
376 | struct process_info *proc; |
377 | ||
a493e3e2 | 378 | last_sig = GDB_SIGNAL_0; |
b80864fb | 379 | |
5ac588cf PA |
380 | current_process_handle = proch; |
381 | current_process_id = pid; | |
382 | main_thread_id = 0; | |
383 | ||
384 | soft_interrupt_requested = 0; | |
385 | faked_breakpoint = 0; | |
386 | ||
b80864fb DJ |
387 | memset (¤t_event, 0, sizeof (current_event)); |
388 | ||
7d186bc0 HD |
389 | #ifdef __x86_64__ |
390 | BOOL wow64; | |
391 | if (!IsWow64Process (proch, &wow64)) | |
392 | { | |
393 | DWORD err = GetLastError (); | |
394 | error ("Check if WOW64 process failed (error %d): %s\n", | |
395 | (int) err, strwinerror (err)); | |
396 | } | |
397 | wow64_process = wow64; | |
398 | ||
399 | if (wow64_process | |
400 | && (win32_Wow64GetThreadContext == nullptr | |
401 | || win32_Wow64SetThreadContext == nullptr)) | |
402 | error ("WOW64 debugging is not supported on this system.\n"); | |
403 | ||
404 | ignore_first_breakpoint = !attached && wow64_process; | |
405 | #endif | |
406 | ||
3aee8918 | 407 | proc = add_process (pid, attached); |
7d186bc0 HD |
408 | #ifdef __x86_64__ |
409 | if (wow64_process) | |
410 | proc->tdesc = wow64_win32_tdesc; | |
411 | else | |
412 | #endif | |
413 | proc->tdesc = win32_tdesc; | |
b80864fb | 414 | child_init_thread_list (); |
f25b3fc3 | 415 | child_initialization_done = 0; |
ed50f18f PA |
416 | |
417 | if (the_low_target.initial_stuff != NULL) | |
418 | (*the_low_target.initial_stuff) (); | |
4210d83e PA |
419 | |
420 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
421 | ||
422 | /* Flush all currently pending debug events (thread and dll list) up | |
423 | to the initial breakpoint. */ | |
424 | while (1) | |
425 | { | |
426 | struct target_waitstatus status; | |
427 | ||
52405d85 | 428 | the_target->wait (minus_one_ptid, &status, 0); |
4210d83e PA |
429 | |
430 | /* Note win32_wait doesn't return thread events. */ | |
431 | if (status.kind != TARGET_WAITKIND_LOADED) | |
432 | { | |
433 | cached_status = status; | |
434 | break; | |
435 | } | |
436 | ||
437 | { | |
438 | struct thread_resume resume; | |
439 | ||
440 | resume.thread = minus_one_ptid; | |
441 | resume.kind = resume_continue; | |
442 | resume.sig = 0; | |
443 | ||
52405d85 | 444 | the_target->resume (&resume, 1); |
4210d83e PA |
445 | } |
446 | } | |
379a5e2d JB |
447 | |
448 | #ifndef _WIN32_WCE | |
f25b3fc3 JB |
449 | /* Now that the inferior has been started and all DLLs have been mapped, |
450 | we can iterate over all DLLs and load them in. | |
451 | ||
452 | We avoid doing it any earlier because, on certain versions of Windows, | |
453 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
454 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
455 | include the DLL name, preventing us from creating an associated SO. | |
456 | A possible explanation is that ntdll.dll might be mapped before | |
457 | the SO info gets created by the Windows system -- ntdll.dll is | |
458 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
459 | do not seem to suffer from that problem. | |
460 | ||
461 | Rather than try to work around this sort of issue, it is much | |
462 | simpler to just ignore DLL load/unload events during the startup | |
463 | phase, and then process them all in one batch now. */ | |
464 | win32_add_all_dlls (); | |
379a5e2d | 465 | #endif |
f25b3fc3 JB |
466 | |
467 | child_initialization_done = 1; | |
b80864fb DJ |
468 | } |
469 | ||
470 | /* Resume all artificially suspended threads if we are continuing | |
471 | execution. */ | |
2bee2b6c SM |
472 | static void |
473 | continue_one_thread (thread_info *thread, int thread_id) | |
b80864fb | 474 | { |
e56f8ccb | 475 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
b80864fb | 476 | |
a2abc7de | 477 | if (thread_id == -1 || thread_id == th->tid) |
b80864fb | 478 | { |
a2abc7de | 479 | win32_prepare_to_resume (th); |
34b34921 | 480 | |
a2abc7de | 481 | if (th->suspended) |
c436e841 | 482 | { |
7d186bc0 HD |
483 | DWORD *context_flags; |
484 | #ifdef __x86_64__ | |
485 | if (wow64_process) | |
486 | context_flags = &th->wow64_context.ContextFlags; | |
487 | else | |
488 | #endif | |
489 | context_flags = &th->context.ContextFlags; | |
490 | if (*context_flags) | |
a2abc7de PA |
491 | { |
492 | win32_set_thread_context (th); | |
7d186bc0 | 493 | *context_flags = 0; |
a2abc7de PA |
494 | } |
495 | ||
98a03287 | 496 | th->resume (); |
c436e841 | 497 | } |
b80864fb | 498 | } |
b80864fb DJ |
499 | } |
500 | ||
501 | static BOOL | |
502 | child_continue (DWORD continue_status, int thread_id) | |
503 | { | |
360ad8b3 TT |
504 | desired_stop_thread_id = thread_id; |
505 | if (matching_pending_stop (debug_threads)) | |
506 | return TRUE; | |
507 | ||
4d5d1aaa PA |
508 | /* The inferior will only continue after the ContinueDebugEvent |
509 | call. */ | |
2bee2b6c SM |
510 | for_each_thread ([&] (thread_info *thread) |
511 | { | |
512 | continue_one_thread (thread, thread_id); | |
513 | }); | |
4d5d1aaa | 514 | faked_breakpoint = 0; |
b80864fb | 515 | |
e758e19c | 516 | return continue_last_debug_event (continue_status, debug_threads); |
b80864fb DJ |
517 | } |
518 | ||
b80864fb DJ |
519 | /* Fetch register(s) from the current thread context. */ |
520 | static void | |
442ea881 | 521 | child_fetch_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
522 | { |
523 | int regno; | |
28688adf TT |
524 | windows_thread_info *th = thread_rec (current_thread_ptid (), |
525 | INVALIDATE_CONTEXT); | |
4463ce24 | 526 | if (r == -1 || r > NUM_REGS) |
442ea881 | 527 | child_fetch_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
528 | else |
529 | for (regno = 0; regno < r; regno++) | |
442ea881 | 530 | (*the_low_target.fetch_inferior_register) (regcache, th, regno); |
b80864fb DJ |
531 | } |
532 | ||
533 | /* Store a new register value into the current thread context. We don't | |
534 | change the program's context until later, when we resume it. */ | |
535 | static void | |
442ea881 | 536 | child_store_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
537 | { |
538 | int regno; | |
28688adf TT |
539 | windows_thread_info *th = thread_rec (current_thread_ptid (), |
540 | INVALIDATE_CONTEXT); | |
b80864fb | 541 | if (r == -1 || r == 0 || r > NUM_REGS) |
442ea881 | 542 | child_store_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
543 | else |
544 | for (regno = 0; regno < r; regno++) | |
442ea881 | 545 | (*the_low_target.store_inferior_register) (regcache, th, regno); |
b80864fb DJ |
546 | } |
547 | ||
ed50f18f PA |
548 | /* Map the Windows error number in ERROR to a locale-dependent error |
549 | message string and return a pointer to it. Typically, the values | |
550 | for ERROR come from GetLastError. | |
551 | ||
552 | The string pointed to shall not be modified by the application, | |
553 | but may be overwritten by a subsequent call to strwinerror | |
554 | ||
555 | The strwinerror function does not change the current setting | |
556 | of GetLastError. */ | |
557 | ||
558 | char * | |
559 | strwinerror (DWORD error) | |
560 | { | |
561 | static char buf[1024]; | |
562 | TCHAR *msgbuf; | |
563 | DWORD lasterr = GetLastError (); | |
564 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
565 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
566 | NULL, | |
567 | error, | |
568 | 0, /* Default language */ | |
c3de4d92 | 569 | (LPTSTR) &msgbuf, |
ed50f18f PA |
570 | 0, |
571 | NULL); | |
572 | if (chars != 0) | |
573 | { | |
574 | /* If there is an \r\n appended, zap it. */ | |
575 | if (chars >= 2 | |
576 | && msgbuf[chars - 2] == '\r' | |
577 | && msgbuf[chars - 1] == '\n') | |
578 | { | |
579 | chars -= 2; | |
580 | msgbuf[chars] = 0; | |
581 | } | |
582 | ||
583 | if (chars > ((COUNTOF (buf)) - 1)) | |
584 | { | |
585 | chars = COUNTOF (buf) - 1; | |
586 | msgbuf [chars] = 0; | |
587 | } | |
588 | ||
589 | #ifdef UNICODE | |
590 | wcstombs (buf, msgbuf, chars + 1); | |
591 | #else | |
592 | strncpy (buf, msgbuf, chars + 1); | |
593 | #endif | |
594 | LocalFree (msgbuf); | |
595 | } | |
596 | else | |
dfe07582 | 597 | sprintf (buf, "unknown win32 error (%u)", (unsigned) error); |
ed50f18f PA |
598 | |
599 | SetLastError (lasterr); | |
600 | return buf; | |
601 | } | |
602 | ||
aec18585 PA |
603 | static BOOL |
604 | create_process (const char *program, char *args, | |
605 | DWORD flags, PROCESS_INFORMATION *pi) | |
606 | { | |
bc3b087d | 607 | const char *inferior_cwd = get_inferior_cwd (); |
aec18585 | 608 | BOOL ret; |
a9b34532 EZ |
609 | size_t argslen, proglen; |
610 | ||
611 | proglen = strlen (program) + 1; | |
612 | argslen = strlen (args) + proglen; | |
aec18585 PA |
613 | |
614 | #ifdef _WIN32_WCE | |
bc3b087d | 615 | wchar_t *p, *wprogram, *wargs, *wcwd = NULL; |
aec18585 | 616 | |
a9b34532 EZ |
617 | wprogram = (wchar_t *) alloca (proglen * sizeof (wchar_t)); |
618 | mbstowcs (wprogram, program, proglen); | |
aec18585 PA |
619 | |
620 | for (p = wprogram; *p; ++p) | |
621 | if (L'/' == *p) | |
622 | *p = L'\\'; | |
623 | ||
aec18585 | 624 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); |
a9b34532 EZ |
625 | wcscpy (wargs, wprogram); |
626 | wcscat (wargs, L" "); | |
627 | mbstowcs (wargs + proglen, args, argslen + 1 - proglen); | |
aec18585 | 628 | |
bc3b087d SDJ |
629 | if (inferior_cwd != NULL) |
630 | { | |
906994d9 | 631 | std::string expanded_infcwd = gdb_tilde_expand (inferior_cwd); |
bc3b087d SDJ |
632 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), |
633 | '/', '\\'); | |
634 | wcwd = alloca ((expanded_infcwd.size () + 1) * sizeof (wchar_t)); | |
635 | if (mbstowcs (wcwd, expanded_infcwd.c_str (), | |
636 | expanded_infcwd.size () + 1) == NULL) | |
637 | { | |
638 | error (_("\ | |
639 | Could not convert the expanded inferior cwd to wide-char.")); | |
640 | } | |
641 | } | |
642 | ||
aec18585 | 643 | ret = CreateProcessW (wprogram, /* image name */ |
1b3f6016 PA |
644 | wargs, /* command line */ |
645 | NULL, /* security, not supported */ | |
646 | NULL, /* thread, not supported */ | |
647 | FALSE, /* inherit handles, not supported */ | |
648 | flags, /* start flags */ | |
649 | NULL, /* environment, not supported */ | |
bc3b087d | 650 | wcwd, /* current directory */ |
1b3f6016 PA |
651 | NULL, /* start info, not supported */ |
652 | pi); /* proc info */ | |
aec18585 PA |
653 | #else |
654 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; | |
a9b34532 EZ |
655 | char *program_and_args = (char *) alloca (argslen + 1); |
656 | ||
657 | strcpy (program_and_args, program); | |
658 | strcat (program_and_args, " "); | |
659 | strcat (program_and_args, args); | |
660 | ret = CreateProcessA (program, /* image name */ | |
661 | program_and_args, /* command line */ | |
662 | NULL, /* security */ | |
663 | NULL, /* thread */ | |
664 | TRUE, /* inherit handles */ | |
665 | flags, /* start flags */ | |
666 | NULL, /* environment */ | |
906994d9 JB |
667 | /* current directory */ |
668 | (inferior_cwd == NULL | |
669 | ? NULL | |
670 | : gdb_tilde_expand (inferior_cwd).c_str()), | |
a9b34532 EZ |
671 | &si, /* start info */ |
672 | pi); /* proc info */ | |
aec18585 PA |
673 | #endif |
674 | ||
675 | return ret; | |
676 | } | |
677 | ||
b80864fb | 678 | /* Start a new process. |
2090129c SDJ |
679 | PROGRAM is the program name. |
680 | PROGRAM_ARGS is the vector containing the inferior's args. | |
b80864fb DJ |
681 | Returns the new PID on success, -1 on failure. Registers the new |
682 | process with the process list. */ | |
15295543 TBA |
683 | int |
684 | win32_process_target::create_inferior (const char *program, | |
685 | const std::vector<char *> &program_args) | |
b80864fb | 686 | { |
6341380d | 687 | client_state &cs = get_client_state (); |
b80864fb | 688 | #ifndef USE_WIN32API |
d8d2a3ee | 689 | char real_path[PATH_MAX]; |
b80864fb DJ |
690 | char *orig_path, *new_path, *path_ptr; |
691 | #endif | |
b80864fb DJ |
692 | BOOL ret; |
693 | DWORD flags; | |
ed50f18f | 694 | PROCESS_INFORMATION pi; |
aec18585 | 695 | DWORD err; |
2090129c SDJ |
696 | std::string str_program_args = stringify_argv (program_args); |
697 | char *args = (char *) str_program_args.c_str (); | |
b80864fb | 698 | |
d97903b2 PA |
699 | /* win32_wait needs to know we're not attaching. */ |
700 | attaching = 0; | |
701 | ||
b80864fb DJ |
702 | if (!program) |
703 | error ("No executable specified, specify executable to debug.\n"); | |
704 | ||
b80864fb DJ |
705 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
706 | ||
707 | #ifndef USE_WIN32API | |
708 | orig_path = NULL; | |
709 | path_ptr = getenv ("PATH"); | |
710 | if (path_ptr) | |
711 | { | |
81239425 | 712 | int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0); |
0ae534d2 JT |
713 | orig_path = (char *) alloca (strlen (path_ptr) + 1); |
714 | new_path = (char *) alloca (size); | |
b80864fb | 715 | strcpy (orig_path, path_ptr); |
81239425 | 716 | cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size); |
b80864fb | 717 | setenv ("PATH", new_path, 1); |
81239425 | 718 | } |
d8d2a3ee | 719 | cygwin_conv_path (CCP_POSIX_TO_WIN_A, program, real_path, PATH_MAX); |
b80864fb DJ |
720 | program = real_path; |
721 | #endif | |
722 | ||
a9b34532 | 723 | OUTMSG2 (("Command line is \"%s %s\"\n", program, args)); |
b80864fb | 724 | |
ed50f18f | 725 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 726 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 727 | #endif |
b80864fb | 728 | |
aec18585 PA |
729 | ret = create_process (program, args, flags, &pi); |
730 | err = GetLastError (); | |
731 | if (!ret && err == ERROR_FILE_NOT_FOUND) | |
732 | { | |
c3de4d92 | 733 | char *exename = (char *) alloca (strlen (program) + 5); |
aec18585 PA |
734 | strcat (strcpy (exename, program), ".exe"); |
735 | ret = create_process (exename, args, flags, &pi); | |
736 | err = GetLastError (); | |
737 | } | |
b80864fb DJ |
738 | |
739 | #ifndef USE_WIN32API | |
740 | if (orig_path) | |
741 | setenv ("PATH", orig_path, 1); | |
742 | #endif | |
743 | ||
744 | if (!ret) | |
745 | { | |
a9b34532 | 746 | error ("Error creating process \"%s %s\", (error %d): %s\n", |
ed50f18f | 747 | program, args, (int) err, strwinerror (err)); |
b80864fb DJ |
748 | } |
749 | else | |
750 | { | |
a9b34532 | 751 | OUTMSG2 (("Process created: %s %s\n", program, (char *) args)); |
b80864fb DJ |
752 | } |
753 | ||
ed50f18f PA |
754 | #ifndef _WIN32_WCE |
755 | /* On Windows CE this handle can't be closed. The OS reuses | |
756 | it in the debug events, while the 9x/NT versions of Windows | |
757 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 758 | CloseHandle (pi.hThread); |
ed50f18f | 759 | #endif |
b80864fb | 760 | |
95954743 | 761 | do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0); |
b80864fb | 762 | |
7dbac825 JB |
763 | /* Wait till we are at 1st instruction in program, return new pid |
764 | (assuming success). */ | |
6532e7e3 | 765 | cs.last_ptid = wait (ptid_t (current_process_id), &cs.last_status, 0); |
7dbac825 | 766 | |
052793ad HD |
767 | /* Necessary for handle_v_kill. */ |
768 | signal_pid = current_process_id; | |
769 | ||
b80864fb DJ |
770 | return current_process_id; |
771 | } | |
772 | ||
773 | /* Attach to a running process. | |
774 | PID is the process ID to attach to, specified by the user | |
775 | or a higher layer. */ | |
ef03dad8 TBA |
776 | int |
777 | win32_process_target::attach (unsigned long pid) | |
b80864fb | 778 | { |
5ca906e6 | 779 | HANDLE h; |
bf914831 | 780 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
5ca906e6 | 781 | DWORD err; |
ed50f18f PA |
782 | #ifdef _WIN32_WCE |
783 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
784 | #else | |
785 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
786 | #endif | |
bf914831 | 787 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
b80864fb | 788 | |
5ca906e6 PA |
789 | h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
790 | if (h != NULL) | |
1d5315fe | 791 | { |
5ca906e6 PA |
792 | if (DebugActiveProcess (pid)) |
793 | { | |
794 | if (DebugSetProcessKillOnExit != NULL) | |
795 | DebugSetProcessKillOnExit (FALSE); | |
796 | ||
d97903b2 | 797 | /* win32_wait needs to know we're attaching. */ |
1b3f6016 | 798 | attaching = 1; |
95954743 | 799 | do_initial_child_stuff (h, pid, 1); |
5ca906e6 PA |
800 | return 0; |
801 | } | |
802 | ||
803 | CloseHandle (h); | |
b80864fb DJ |
804 | } |
805 | ||
5ca906e6 PA |
806 | err = GetLastError (); |
807 | error ("Attach to process failed (error %d): %s\n", | |
808 | (int) err, strwinerror (err)); | |
b80864fb DJ |
809 | } |
810 | ||
d41b524f TT |
811 | /* See nat/windows-nat.h. */ |
812 | ||
813 | int | |
814 | windows_nat::handle_output_debug_string (struct target_waitstatus *ourstatus) | |
bce7165d PA |
815 | { |
816 | #define READ_BUFFER_LEN 1024 | |
817 | CORE_ADDR addr; | |
818 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
819 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
820 | ||
821 | if (nbytes == 0) | |
d41b524f | 822 | return 0; |
bce7165d PA |
823 | |
824 | if (nbytes > READ_BUFFER_LEN) | |
825 | nbytes = READ_BUFFER_LEN; | |
826 | ||
827 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
828 | ||
829 | if (current_event.u.DebugString.fUnicode) | |
830 | { | |
831 | /* The event tells us how many bytes, not chars, even | |
1b3f6016 | 832 | in Unicode. */ |
bce7165d PA |
833 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; |
834 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
d41b524f | 835 | return 0; |
bce7165d PA |
836 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); |
837 | } | |
838 | else | |
839 | { | |
840 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
d41b524f | 841 | return 0; |
bce7165d PA |
842 | } |
843 | ||
61012eef | 844 | if (!startswith (s, "cYg")) |
45e2715e PA |
845 | { |
846 | if (!server_waiting) | |
847 | { | |
848 | OUTMSG2(("%s", s)); | |
d41b524f | 849 | return 0; |
45e2715e PA |
850 | } |
851 | ||
852 | monitor_output (s); | |
853 | } | |
bce7165d | 854 | #undef READ_BUFFER_LEN |
d41b524f TT |
855 | |
856 | return 0; | |
bce7165d PA |
857 | } |
858 | ||
5ac588cf PA |
859 | static void |
860 | win32_clear_inferiors (void) | |
861 | { | |
862 | if (current_process_handle != NULL) | |
863 | CloseHandle (current_process_handle); | |
864 | ||
f0045347 | 865 | for_each_thread (delete_thread_info); |
7928d571 | 866 | siginfo_er.ExceptionCode = 0; |
5ac588cf PA |
867 | clear_inferiors (); |
868 | } | |
869 | ||
a780ef4f PA |
870 | /* Implementation of target_ops::kill. */ |
871 | ||
c6885a57 TBA |
872 | int |
873 | win32_process_target::kill (process_info *process) | |
b80864fb DJ |
874 | { |
875 | TerminateProcess (current_process_handle, 0); | |
876 | for (;;) | |
877 | { | |
878 | if (!child_continue (DBG_CONTINUE, -1)) | |
879 | break; | |
2c1d95e8 | 880 | if (!wait_for_debug_event (¤t_event, INFINITE)) |
b80864fb DJ |
881 | break; |
882 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
883 | break; | |
bce7165d | 884 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
d41b524f | 885 | handle_output_debug_string (nullptr); |
b80864fb | 886 | } |
ed50f18f | 887 | |
5ac588cf | 888 | win32_clear_inferiors (); |
95954743 | 889 | |
95954743 PA |
890 | remove_process (process); |
891 | return 0; | |
b80864fb DJ |
892 | } |
893 | ||
ef2ddb33 PA |
894 | /* Implementation of target_ops::detach. */ |
895 | ||
9061c9cf TBA |
896 | int |
897 | win32_process_target::detach (process_info *process) | |
b80864fb | 898 | { |
bf914831 PA |
899 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
900 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
901 | #ifdef _WIN32_WCE |
902 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
903 | #else | |
904 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
905 | #endif | |
bf914831 PA |
906 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
907 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 908 | |
444d6139 PA |
909 | if (DebugSetProcessKillOnExit == NULL |
910 | || DebugActiveProcessStop == NULL) | |
911 | return -1; | |
b80864fb | 912 | |
444d6139 PA |
913 | { |
914 | struct thread_resume resume; | |
95954743 | 915 | resume.thread = minus_one_ptid; |
bd99dc85 | 916 | resume.kind = resume_continue; |
444d6139 | 917 | resume.sig = 0; |
0e4d7e35 | 918 | this->resume (&resume, 1); |
444d6139 PA |
919 | } |
920 | ||
921 | if (!DebugActiveProcessStop (current_process_id)) | |
5ac588cf PA |
922 | return -1; |
923 | ||
444d6139 | 924 | DebugSetProcessKillOnExit (FALSE); |
95954743 | 925 | remove_process (process); |
444d6139 | 926 | |
5ac588cf | 927 | win32_clear_inferiors (); |
444d6139 PA |
928 | return 0; |
929 | } | |
930 | ||
8adb37b9 TBA |
931 | void |
932 | win32_process_target::mourn (struct process_info *process) | |
505106cd PA |
933 | { |
934 | remove_process (process); | |
935 | } | |
936 | ||
ef2ddb33 PA |
937 | /* Implementation of target_ops::join. */ |
938 | ||
95a49a39 TBA |
939 | void |
940 | win32_process_target::join (int pid) | |
444d6139 | 941 | { |
d105de22 | 942 | HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
5ac588cf PA |
943 | if (h != NULL) |
944 | { | |
945 | WaitForSingleObject (h, INFINITE); | |
946 | CloseHandle (h); | |
947 | } | |
b80864fb DJ |
948 | } |
949 | ||
13d3d99b TBA |
950 | /* Return true iff the thread with thread ID TID is alive. */ |
951 | bool | |
952 | win32_process_target::thread_alive (ptid_t ptid) | |
b80864fb | 953 | { |
b80864fb DJ |
954 | /* Our thread list is reliable; don't bother to poll target |
955 | threads. */ | |
8dc7b443 | 956 | return find_thread_ptid (ptid) != NULL; |
b80864fb DJ |
957 | } |
958 | ||
959 | /* Resume the inferior process. RESUME_INFO describes how we want | |
960 | to resume. */ | |
0e4d7e35 TBA |
961 | void |
962 | win32_process_target::resume (thread_resume *resume_info, size_t n) | |
b80864fb DJ |
963 | { |
964 | DWORD tid; | |
2ea28649 | 965 | enum gdb_signal sig; |
b80864fb | 966 | int step; |
e56f8ccb | 967 | windows_thread_info *th; |
b80864fb | 968 | DWORD continue_status = DBG_CONTINUE; |
95954743 | 969 | ptid_t ptid; |
b80864fb DJ |
970 | |
971 | /* This handles the very limited set of resume packets that GDB can | |
972 | currently produce. */ | |
973 | ||
d7e15655 | 974 | if (n == 1 && resume_info[0].thread == minus_one_ptid) |
b80864fb | 975 | tid = -1; |
2bd7c093 | 976 | else if (n > 1) |
b80864fb DJ |
977 | tid = -1; |
978 | else | |
979 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
980 | the Windows resume code do the right thing for thread switching. */ | |
981 | tid = current_event.dwThreadId; | |
982 | ||
d7e15655 | 983 | if (resume_info[0].thread != minus_one_ptid) |
b80864fb | 984 | { |
ce7715e2 | 985 | sig = gdb_signal_from_host (resume_info[0].sig); |
bd99dc85 | 986 | step = resume_info[0].kind == resume_step; |
b80864fb DJ |
987 | } |
988 | else | |
989 | { | |
ce7715e2 | 990 | sig = GDB_SIGNAL_0; |
b80864fb DJ |
991 | step = 0; |
992 | } | |
993 | ||
a493e3e2 | 994 | if (sig != GDB_SIGNAL_0) |
b80864fb DJ |
995 | { |
996 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
997 | { | |
ce7715e2 PA |
998 | OUTMSG (("Cannot continue with signal %s here.\n", |
999 | gdb_signal_to_string (sig))); | |
b80864fb DJ |
1000 | } |
1001 | else if (sig == last_sig) | |
1002 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
1003 | else | |
ce7715e2 PA |
1004 | OUTMSG (("Can only continue with received signal %s.\n", |
1005 | gdb_signal_to_string (last_sig))); | |
b80864fb DJ |
1006 | } |
1007 | ||
a493e3e2 | 1008 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
1009 | |
1010 | /* Get context for the currently selected thread. */ | |
95954743 | 1011 | ptid = debug_event_ptid (¤t_event); |
28688adf | 1012 | th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
b80864fb DJ |
1013 | if (th) |
1014 | { | |
a2abc7de PA |
1015 | win32_prepare_to_resume (th); |
1016 | ||
7d186bc0 HD |
1017 | DWORD *context_flags; |
1018 | #ifdef __x86_64__ | |
1019 | if (wow64_process) | |
1020 | context_flags = &th->wow64_context.ContextFlags; | |
1021 | else | |
1022 | #endif | |
1023 | context_flags = &th->context.ContextFlags; | |
1024 | if (*context_flags) | |
b80864fb | 1025 | { |
b80864fb DJ |
1026 | /* Move register values from the inferior into the thread |
1027 | context structure. */ | |
1028 | regcache_invalidate (); | |
1029 | ||
1030 | if (step) | |
ed50f18f PA |
1031 | { |
1032 | if (the_low_target.single_step != NULL) | |
1033 | (*the_low_target.single_step) (th); | |
1034 | else | |
1035 | error ("Single stepping is not supported " | |
1036 | "in this configuration.\n"); | |
1037 | } | |
34b34921 | 1038 | |
9c6c8194 | 1039 | win32_set_thread_context (th); |
7d186bc0 | 1040 | *context_flags = 0; |
b80864fb DJ |
1041 | } |
1042 | } | |
1043 | ||
1044 | /* Allow continuing with the same signal that interrupted us. | |
1045 | Otherwise complain. */ | |
1046 | ||
1047 | child_continue (continue_status, tid); | |
1048 | } | |
1049 | ||
255e7678 DJ |
1050 | static void |
1051 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
1052 | { | |
1053 | char buf[MAX_PATH + 1]; | |
1054 | char buf2[MAX_PATH + 1]; | |
1055 | ||
1056 | #ifdef _WIN32_WCE | |
1057 | WIN32_FIND_DATA w32_fd; | |
1058 | WCHAR wname[MAX_PATH + 1]; | |
1059 | mbstowcs (wname, name, MAX_PATH); | |
1060 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
1061 | #else | |
1062 | WIN32_FIND_DATAA w32_fd; | |
1063 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
1064 | #endif | |
1065 | ||
850a0f76 JB |
1066 | /* The symbols in a dll are offset by 0x1000, which is the |
1067 | offset from 0 of the first byte in an image - because | |
1068 | of the file header and the section alignment. */ | |
1069 | load_addr += 0x1000; | |
1070 | ||
255e7678 DJ |
1071 | if (h == INVALID_HANDLE_VALUE) |
1072 | strcpy (buf, name); | |
1073 | else | |
1074 | { | |
1075 | FindClose (h); | |
1076 | strcpy (buf, name); | |
1077 | #ifndef _WIN32_WCE | |
1078 | { | |
1079 | char cwd[MAX_PATH + 1]; | |
1080 | char *p; | |
1081 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
1082 | { | |
1083 | p = strrchr (buf, '\\'); | |
1084 | if (p) | |
1085 | p[1] = '\0'; | |
1086 | SetCurrentDirectoryA (buf); | |
1087 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
1088 | SetCurrentDirectoryA (cwd); | |
1089 | } | |
1090 | } | |
1091 | #endif | |
1092 | } | |
1093 | ||
cf6e3471 PA |
1094 | #ifndef _WIN32_WCE |
1095 | if (strcasecmp (buf, "ntdll.dll") == 0) | |
1096 | { | |
1097 | GetSystemDirectoryA (buf, sizeof (buf)); | |
1098 | strcat (buf, "\\ntdll.dll"); | |
1099 | } | |
1100 | #endif | |
1101 | ||
255e7678 | 1102 | #ifdef __CYGWIN__ |
81239425 | 1103 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2)); |
255e7678 DJ |
1104 | #else |
1105 | strcpy (buf2, buf); | |
1106 | #endif | |
1107 | ||
1108 | loaded_dll (buf2, load_addr); | |
1109 | } | |
1110 | ||
255e7678 DJ |
1111 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, |
1112 | DWORD, LPDWORD); | |
7d186bc0 HD |
1113 | #ifdef __x86_64__ |
1114 | typedef BOOL (WINAPI *winapi_EnumProcessModulesEx) (HANDLE, HMODULE *, DWORD, | |
1115 | LPDWORD, DWORD); | |
1116 | #endif | |
255e7678 DJ |
1117 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, |
1118 | LPMODULEINFO, DWORD); | |
1119 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
1120 | LPSTR, DWORD); | |
1121 | ||
1122 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
7d186bc0 HD |
1123 | #ifdef __x86_64__ |
1124 | static winapi_EnumProcessModulesEx win32_EnumProcessModulesEx; | |
1125 | #endif | |
255e7678 DJ |
1126 | static winapi_GetModuleInformation win32_GetModuleInformation; |
1127 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
1128 | ||
1129 | static BOOL | |
1130 | load_psapi (void) | |
1131 | { | |
1132 | static int psapi_loaded = 0; | |
1133 | static HMODULE dll = NULL; | |
1134 | ||
1135 | if (!psapi_loaded) | |
1136 | { | |
1137 | psapi_loaded = 1; | |
1138 | dll = LoadLibrary (TEXT("psapi.dll")); | |
1139 | if (!dll) | |
1140 | return FALSE; | |
1141 | win32_EnumProcessModules = | |
1142 | GETPROCADDRESS (dll, EnumProcessModules); | |
7d186bc0 HD |
1143 | #ifdef __x86_64__ |
1144 | win32_EnumProcessModulesEx = | |
1145 | GETPROCADDRESS (dll, EnumProcessModulesEx); | |
1146 | #endif | |
255e7678 DJ |
1147 | win32_GetModuleInformation = |
1148 | GETPROCADDRESS (dll, GetModuleInformation); | |
1149 | win32_GetModuleFileNameExA = | |
1150 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
1151 | } | |
1152 | ||
7d186bc0 HD |
1153 | #ifdef __x86_64__ |
1154 | if (wow64_process && win32_EnumProcessModulesEx == nullptr) | |
1155 | return FALSE; | |
1156 | #endif | |
1157 | ||
255e7678 DJ |
1158 | return (win32_EnumProcessModules != NULL |
1159 | && win32_GetModuleInformation != NULL | |
1160 | && win32_GetModuleFileNameExA != NULL); | |
1161 | } | |
1162 | ||
379a5e2d | 1163 | #ifndef _WIN32_WCE |
649ebbca | 1164 | |
f25b3fc3 JB |
1165 | /* Iterate over all DLLs currently mapped by our inferior, and |
1166 | add them to our list of solibs. */ | |
379a5e2d JB |
1167 | |
1168 | static void | |
f25b3fc3 | 1169 | win32_add_all_dlls (void) |
379a5e2d | 1170 | { |
379a5e2d JB |
1171 | size_t i; |
1172 | HMODULE dh_buf[1]; | |
1173 | HMODULE *DllHandle = dh_buf; | |
1174 | DWORD cbNeeded; | |
1175 | BOOL ok; | |
1176 | ||
379a5e2d JB |
1177 | if (!load_psapi ()) |
1178 | return; | |
1179 | ||
1180 | cbNeeded = 0; | |
7d186bc0 HD |
1181 | #ifdef __x86_64__ |
1182 | if (wow64_process) | |
1183 | ok = (*win32_EnumProcessModulesEx) (current_process_handle, | |
1184 | DllHandle, | |
1185 | sizeof (HMODULE), | |
1186 | &cbNeeded, | |
1187 | LIST_MODULES_32BIT); | |
1188 | else | |
1189 | #endif | |
1190 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1191 | DllHandle, | |
1192 | sizeof (HMODULE), | |
1193 | &cbNeeded); | |
379a5e2d JB |
1194 | |
1195 | if (!ok || !cbNeeded) | |
1196 | return; | |
1197 | ||
1198 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
1199 | if (!DllHandle) | |
1200 | return; | |
1201 | ||
7d186bc0 HD |
1202 | #ifdef __x86_64__ |
1203 | if (wow64_process) | |
1204 | ok = (*win32_EnumProcessModulesEx) (current_process_handle, | |
1205 | DllHandle, | |
1206 | cbNeeded, | |
1207 | &cbNeeded, | |
1208 | LIST_MODULES_32BIT); | |
1209 | else | |
1210 | #endif | |
1211 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1212 | DllHandle, | |
1213 | cbNeeded, | |
1214 | &cbNeeded); | |
379a5e2d JB |
1215 | if (!ok) |
1216 | return; | |
1217 | ||
7d186bc0 HD |
1218 | char system_dir[MAX_PATH]; |
1219 | char syswow_dir[MAX_PATH]; | |
1220 | size_t system_dir_len = 0; | |
1221 | bool convert_syswow_dir = false; | |
1222 | #ifdef __x86_64__ | |
1223 | if (wow64_process) | |
1224 | #endif | |
1225 | { | |
1226 | /* This fails on 32bit Windows because it has no SysWOW64 directory, | |
1227 | and in this case a path conversion isn't necessary. */ | |
1228 | UINT len = GetSystemWow64DirectoryA (syswow_dir, sizeof (syswow_dir)); | |
1229 | if (len > 0) | |
1230 | { | |
1231 | /* Check that we have passed a large enough buffer. */ | |
1232 | gdb_assert (len < sizeof (syswow_dir)); | |
1233 | ||
1234 | len = GetSystemDirectoryA (system_dir, sizeof (system_dir)); | |
1235 | /* Error check. */ | |
1236 | gdb_assert (len != 0); | |
1237 | /* Check that we have passed a large enough buffer. */ | |
1238 | gdb_assert (len < sizeof (system_dir)); | |
1239 | ||
1240 | strcat (system_dir, "\\"); | |
1241 | strcat (syswow_dir, "\\"); | |
1242 | system_dir_len = strlen (system_dir); | |
1243 | ||
1244 | convert_syswow_dir = true; | |
1245 | } | |
1246 | ||
1247 | } | |
1248 | ||
f25b3fc3 | 1249 | for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) |
379a5e2d JB |
1250 | { |
1251 | MODULEINFO mi; | |
1252 | char dll_name[MAX_PATH]; | |
1253 | ||
1254 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
1255 | DllHandle[i], | |
1256 | &mi, | |
1257 | sizeof (mi))) | |
1258 | continue; | |
1259 | if ((*win32_GetModuleFileNameExA) (current_process_handle, | |
1260 | DllHandle[i], | |
1261 | dll_name, | |
1262 | MAX_PATH) == 0) | |
1263 | continue; | |
7d186bc0 HD |
1264 | |
1265 | const char *name = dll_name; | |
1266 | /* Convert the DLL path of 32bit processes returned by | |
1267 | GetModuleFileNameEx from the 64bit system directory to the | |
1268 | 32bit syswow64 directory if necessary. */ | |
1269 | std::string syswow_dll_path; | |
1270 | if (convert_syswow_dir | |
1271 | && strncasecmp (dll_name, system_dir, system_dir_len) == 0 | |
1272 | && strchr (dll_name + system_dir_len, '\\') == nullptr) | |
1273 | { | |
1274 | syswow_dll_path = syswow_dir; | |
1275 | syswow_dll_path += dll_name + system_dir_len; | |
1276 | name = syswow_dll_path.c_str(); | |
1277 | } | |
1278 | ||
1279 | win32_add_one_solib (name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll); | |
379a5e2d JB |
1280 | } |
1281 | } | |
1282 | #endif | |
1283 | ||
255e7678 DJ |
1284 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); |
1285 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
1286 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
1287 | ||
a816ba18 | 1288 | /* See nat/windows-nat.h. */ |
255e7678 | 1289 | |
a816ba18 TT |
1290 | void |
1291 | windows_nat::handle_load_dll () | |
255e7678 DJ |
1292 | { |
1293 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
9d8679cc | 1294 | const char *dll_name; |
255e7678 | 1295 | |
d763de10 JB |
1296 | dll_name = get_image_name (current_process_handle, |
1297 | event->lpImageName, event->fUnicode); | |
255e7678 DJ |
1298 | if (!dll_name) |
1299 | return; | |
1300 | ||
850a0f76 | 1301 | win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) event->lpBaseOfDll); |
255e7678 DJ |
1302 | } |
1303 | ||
a816ba18 | 1304 | /* See nat/windows-nat.h. */ |
f25b3fc3 | 1305 | |
a816ba18 TT |
1306 | void |
1307 | windows_nat::handle_unload_dll () | |
255e7678 DJ |
1308 | { |
1309 | CORE_ADDR load_addr = | |
e8f0053d | 1310 | (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll; |
850a0f76 JB |
1311 | |
1312 | /* The symbols in a dll are offset by 0x1000, which is the | |
1313 | offset from 0 of the first byte in an image - because | |
1314 | of the file header and the section alignment. */ | |
255e7678 DJ |
1315 | load_addr += 0x1000; |
1316 | unloaded_dll (NULL, load_addr); | |
1317 | } | |
1318 | ||
34b34921 | 1319 | static void |
9c80ecd6 | 1320 | suspend_one_thread (thread_info *thread) |
4d5d1aaa | 1321 | { |
e56f8ccb | 1322 | windows_thread_info *th = (windows_thread_info *) thread_target_data (thread); |
4d5d1aaa | 1323 | |
98a03287 | 1324 | th->suspend (); |
4d5d1aaa PA |
1325 | } |
1326 | ||
1327 | static void | |
1328 | fake_breakpoint_event (void) | |
b80864fb | 1329 | { |
4d5d1aaa | 1330 | OUTMSG2(("fake_breakpoint_event\n")); |
b80864fb | 1331 | |
4d5d1aaa PA |
1332 | faked_breakpoint = 1; |
1333 | ||
1334 | memset (¤t_event, 0, sizeof (current_event)); | |
1335 | current_event.dwThreadId = main_thread_id; | |
1336 | current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT; | |
1337 | current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1338 | = EXCEPTION_BREAKPOINT; | |
1339 | ||
f0045347 | 1340 | for_each_thread (suspend_one_thread); |
4d5d1aaa PA |
1341 | } |
1342 | ||
b65d95c5 DJ |
1343 | #ifdef _WIN32_WCE |
1344 | static int | |
1345 | auto_delete_breakpoint (CORE_ADDR stop_pc) | |
1346 | { | |
1347 | return 1; | |
1348 | } | |
1349 | #endif | |
1350 | ||
8d30e395 TT |
1351 | /* See nat/windows-nat.h. */ |
1352 | ||
1353 | bool | |
1354 | windows_nat::handle_ms_vc_exception (const EXCEPTION_RECORD *rec) | |
1355 | { | |
1356 | return false; | |
1357 | } | |
1358 | ||
a010605f TT |
1359 | /* See nat/windows-nat.h. */ |
1360 | ||
1361 | bool | |
1362 | windows_nat::handle_access_violation (const EXCEPTION_RECORD *rec) | |
1363 | { | |
1364 | return false; | |
1365 | } | |
1366 | ||
523d4f80 TT |
1367 | /* A helper function that will, if needed, set |
1368 | 'stopped_at_software_breakpoint' on the thread and adjust the | |
1369 | PC. */ | |
1370 | ||
1371 | static void | |
1372 | maybe_adjust_pc () | |
1373 | { | |
1374 | struct regcache *regcache = get_thread_regcache (current_thread, 1); | |
1375 | child_fetch_inferior_registers (regcache, -1); | |
1376 | ||
1377 | windows_thread_info *th = thread_rec (current_thread_ptid (), | |
1378 | DONT_INVALIDATE_CONTEXT); | |
1379 | th->stopped_at_software_breakpoint = false; | |
1380 | ||
1381 | if (current_event.dwDebugEventCode == EXCEPTION_DEBUG_EVENT | |
7d186bc0 HD |
1382 | && ((current_event.u.Exception.ExceptionRecord.ExceptionCode |
1383 | == EXCEPTION_BREAKPOINT) | |
1384 | || (current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1385 | == STATUS_WX86_BREAKPOINT)) | |
523d4f80 TT |
1386 | && child_initialization_done) |
1387 | { | |
1388 | th->stopped_at_software_breakpoint = true; | |
1389 | CORE_ADDR pc = regcache_read_pc (regcache); | |
1390 | CORE_ADDR sw_breakpoint_pc = pc - the_low_target.decr_pc_after_break; | |
1391 | regcache_write_pc (regcache, sw_breakpoint_pc); | |
1392 | } | |
1393 | } | |
1394 | ||
4d5d1aaa PA |
1395 | /* Get the next event from the child. */ |
1396 | ||
1397 | static int | |
8d30e395 TT |
1398 | get_child_debug_event (DWORD *continue_status, |
1399 | struct target_waitstatus *ourstatus) | |
4d5d1aaa | 1400 | { |
95954743 PA |
1401 | ptid_t ptid; |
1402 | ||
a493e3e2 | 1403 | last_sig = GDB_SIGNAL_0; |
b80864fb | 1404 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
8d30e395 | 1405 | *continue_status = DBG_CONTINUE; |
b80864fb | 1406 | |
4d5d1aaa PA |
1407 | /* Check if GDB sent us an interrupt request. */ |
1408 | check_remote_input_interrupt_request (); | |
1409 | ||
1410 | if (soft_interrupt_requested) | |
1411 | { | |
1412 | soft_interrupt_requested = 0; | |
1413 | fake_breakpoint_event (); | |
1414 | goto gotevent; | |
1415 | } | |
1416 | ||
d97903b2 PA |
1417 | #ifndef _WIN32_WCE |
1418 | attaching = 0; | |
1419 | #else | |
1420 | if (attaching) | |
1421 | { | |
1422 | /* WinCE doesn't set an initial breakpoint automatically. To | |
1b3f6016 PA |
1423 | stop the inferior, we flush all currently pending debug |
1424 | events -- the thread list and the dll list are always | |
1425 | reported immediatelly without delay, then, we suspend all | |
1426 | threads and pretend we saw a trap at the current PC of the | |
1427 | main thread. | |
1428 | ||
1429 | Contrary to desktop Windows, Windows CE *does* report the dll | |
1430 | names on LOAD_DLL_DEBUG_EVENTs resulting from a | |
1431 | DebugActiveProcess call. This limits the way we can detect | |
1432 | if all the dlls have already been reported. If we get a real | |
1433 | debug event before leaving attaching, the worst that will | |
1434 | happen is the user will see a spurious breakpoint. */ | |
d97903b2 PA |
1435 | |
1436 | current_event.dwDebugEventCode = 0; | |
2c1d95e8 | 1437 | if (!wait_for_debug_event (¤t_event, 0)) |
1b3f6016 PA |
1438 | { |
1439 | OUTMSG2(("no attach events left\n")); | |
1440 | fake_breakpoint_event (); | |
1441 | attaching = 0; | |
1442 | } | |
d97903b2 | 1443 | else |
1b3f6016 | 1444 | OUTMSG2(("got attach event\n")); |
d97903b2 PA |
1445 | } |
1446 | else | |
1447 | #endif | |
1448 | { | |
360ad8b3 TT |
1449 | gdb::optional<pending_stop> stop = fetch_pending_stop (debug_threads); |
1450 | if (stop.has_value ()) | |
1451 | { | |
1452 | *ourstatus = stop->status; | |
1453 | current_event = stop->event; | |
1454 | ptid = debug_event_ptid (¤t_event); | |
1455 | current_thread = find_thread_ptid (ptid); | |
1456 | return 1; | |
1457 | } | |
1458 | ||
30baf67b | 1459 | /* Keep the wait time low enough for comfortable remote |
1b3f6016 PA |
1460 | interruption, but high enough so gdbserver doesn't become a |
1461 | bottleneck. */ | |
2c1d95e8 | 1462 | if (!wait_for_debug_event (¤t_event, 250)) |
912cf4ba PA |
1463 | { |
1464 | DWORD e = GetLastError(); | |
1465 | ||
1466 | if (e == ERROR_PIPE_NOT_CONNECTED) | |
1467 | { | |
1468 | /* This will happen if the loader fails to succesfully | |
1469 | load the application, e.g., if the main executable | |
1470 | tries to pull in a non-existing export from a | |
1471 | DLL. */ | |
1472 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1473 | ourstatus->value.integer = 1; | |
1474 | return 1; | |
1475 | } | |
1476 | ||
1477 | return 0; | |
1478 | } | |
d97903b2 | 1479 | } |
4d5d1aaa PA |
1480 | |
1481 | gotevent: | |
b80864fb | 1482 | |
34b34921 | 1483 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1484 | { |
1485 | case CREATE_THREAD_DEBUG_EVENT: | |
1486 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
dfe07582 | 1487 | "for pid=%u tid=%x)\n", |
b80864fb DJ |
1488 | (unsigned) current_event.dwProcessId, |
1489 | (unsigned) current_event.dwThreadId)); | |
1490 | ||
1491 | /* Record the existence of this thread. */ | |
95954743 PA |
1492 | child_add_thread (current_event.dwProcessId, |
1493 | current_event.dwThreadId, | |
711e434b PM |
1494 | current_event.u.CreateThread.hThread, |
1495 | current_event.u.CreateThread.lpThreadLocalBase); | |
b80864fb DJ |
1496 | break; |
1497 | ||
1498 | case EXIT_THREAD_DEBUG_EVENT: | |
1499 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
dfe07582 | 1500 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1501 | (unsigned) current_event.dwProcessId, |
1502 | (unsigned) current_event.dwThreadId)); | |
95954743 PA |
1503 | child_delete_thread (current_event.dwProcessId, |
1504 | current_event.dwThreadId); | |
aeeb81d1 | 1505 | |
9c80ecd6 | 1506 | current_thread = get_first_thread (); |
aeeb81d1 | 1507 | return 1; |
b80864fb DJ |
1508 | |
1509 | case CREATE_PROCESS_DEBUG_EVENT: | |
1510 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1511 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1512 | (unsigned) current_event.dwProcessId, |
1513 | (unsigned) current_event.dwThreadId)); | |
1514 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1515 | ||
1516 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1517 | main_thread_id = current_event.dwThreadId; | |
1518 | ||
b80864fb | 1519 | /* Add the main thread. */ |
95954743 PA |
1520 | child_add_thread (current_event.dwProcessId, |
1521 | main_thread_id, | |
711e434b PM |
1522 | current_event.u.CreateProcessInfo.hThread, |
1523 | current_event.u.CreateProcessInfo.lpThreadLocalBase); | |
b80864fb | 1524 | |
ed50f18f | 1525 | #ifdef _WIN32_WCE |
d97903b2 PA |
1526 | if (!attaching) |
1527 | { | |
1528 | /* Windows CE doesn't set the initial breakpoint | |
1529 | automatically like the desktop versions of Windows do. | |
1530 | We add it explicitly here. It will be removed as soon as | |
1531 | it is hit. */ | |
1532 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1533 | .CreateProcessInfo.lpStartAddress, | |
b65d95c5 | 1534 | auto_delete_breakpoint); |
d97903b2 | 1535 | } |
ed50f18f | 1536 | #endif |
b80864fb DJ |
1537 | break; |
1538 | ||
1539 | case EXIT_PROCESS_DEBUG_EVENT: | |
1540 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1541 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1542 | (unsigned) current_event.dwProcessId, |
1543 | (unsigned) current_event.dwThreadId)); | |
559e7e50 EZ |
1544 | { |
1545 | DWORD exit_status = current_event.u.ExitProcess.dwExitCode; | |
1546 | /* If the exit status looks like a fatal exception, but we | |
1547 | don't recognize the exception's code, make the original | |
1548 | exit status value available, to avoid losing information. */ | |
1549 | int exit_signal | |
1550 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1551 | if (exit_signal == -1) | |
1552 | { | |
1553 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1554 | ourstatus->value.integer = exit_status; | |
1555 | } | |
1556 | else | |
1557 | { | |
1558 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1559 | ourstatus->value.sig = gdb_signal_from_host (exit_signal); | |
1560 | } | |
1561 | } | |
360ad8b3 | 1562 | child_continue (DBG_CONTINUE, desired_stop_thread_id); |
b80864fb | 1563 | CloseHandle (current_process_handle); |
9d606399 | 1564 | current_process_handle = NULL; |
b80864fb DJ |
1565 | break; |
1566 | ||
1567 | case LOAD_DLL_DEBUG_EVENT: | |
1568 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1569 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1570 | (unsigned) current_event.dwProcessId, |
1571 | (unsigned) current_event.dwThreadId)); | |
1572 | CloseHandle (current_event.u.LoadDll.hFile); | |
f25b3fc3 JB |
1573 | if (! child_initialization_done) |
1574 | break; | |
255e7678 | 1575 | handle_load_dll (); |
b80864fb DJ |
1576 | |
1577 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1578 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1579 | break; |
1580 | ||
1581 | case UNLOAD_DLL_DEBUG_EVENT: | |
1582 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1583 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1584 | (unsigned) current_event.dwProcessId, |
1585 | (unsigned) current_event.dwThreadId)); | |
f25b3fc3 JB |
1586 | if (! child_initialization_done) |
1587 | break; | |
255e7678 DJ |
1588 | handle_unload_dll (); |
1589 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1590 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1591 | break; |
1592 | ||
1593 | case EXCEPTION_DEBUG_EVENT: | |
1594 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
dfe07582 | 1595 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1596 | (unsigned) current_event.dwProcessId, |
1597 | (unsigned) current_event.dwThreadId)); | |
8d30e395 TT |
1598 | if (handle_exception (ourstatus, debug_threads) |
1599 | == HANDLE_EXCEPTION_UNHANDLED) | |
1600 | *continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
b80864fb DJ |
1601 | break; |
1602 | ||
1603 | case OUTPUT_DEBUG_STRING_EVENT: | |
1604 | /* A message from the kernel (or Cygwin). */ | |
1605 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
dfe07582 | 1606 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1607 | (unsigned) current_event.dwProcessId, |
1608 | (unsigned) current_event.dwThreadId)); | |
d41b524f | 1609 | handle_output_debug_string (nullptr); |
b80864fb DJ |
1610 | break; |
1611 | ||
1612 | default: | |
1613 | OUTMSG2 (("gdbserver: kernel event unknown " | |
dfe07582 | 1614 | "for pid=%u tid=%x code=%x\n", |
b80864fb DJ |
1615 | (unsigned) current_event.dwProcessId, |
1616 | (unsigned) current_event.dwThreadId, | |
dfe07582 | 1617 | (unsigned) current_event.dwDebugEventCode)); |
b80864fb DJ |
1618 | break; |
1619 | } | |
1620 | ||
aeeb81d1 | 1621 | ptid = debug_event_ptid (¤t_event); |
360ad8b3 TT |
1622 | |
1623 | if (desired_stop_thread_id != -1 && desired_stop_thread_id != ptid.lwp ()) | |
1624 | { | |
1625 | /* Pending stop. See the comment by the definition of | |
1626 | "pending_stops" for details on why this is needed. */ | |
1627 | OUTMSG2 (("get_windows_debug_event - " | |
e2275c6e | 1628 | "unexpected stop in 0x%lx (expecting 0x%x)\n", |
360ad8b3 TT |
1629 | ptid.lwp (), desired_stop_thread_id)); |
1630 | maybe_adjust_pc (); | |
1631 | pending_stops.push_back ({(DWORD) ptid.lwp (), *ourstatus, current_event}); | |
1632 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1633 | } | |
1634 | else | |
1635 | current_thread = find_thread_ptid (ptid); | |
1636 | ||
4d5d1aaa | 1637 | return 1; |
b80864fb DJ |
1638 | } |
1639 | ||
1640 | /* Wait for the inferior process to change state. | |
1641 | STATUS will be filled in with a response code to send to GDB. | |
1642 | Returns the signal which caused the process to stop. */ | |
6532e7e3 TBA |
1643 | ptid_t |
1644 | win32_process_target::wait (ptid_t ptid, target_waitstatus *ourstatus, | |
1645 | int options) | |
b80864fb | 1646 | { |
4210d83e PA |
1647 | if (cached_status.kind != TARGET_WAITKIND_IGNORE) |
1648 | { | |
1649 | /* The core always does a wait after creating the inferior, and | |
1650 | do_initial_child_stuff already ran the inferior to the | |
1651 | initial breakpoint (or an exit, if creating the process | |
1652 | fails). Report it now. */ | |
1653 | *ourstatus = cached_status; | |
1654 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
1655 | return debug_event_ptid (¤t_event); | |
1656 | } | |
1657 | ||
b80864fb DJ |
1658 | while (1) |
1659 | { | |
8d30e395 TT |
1660 | DWORD continue_status; |
1661 | if (!get_child_debug_event (&continue_status, ourstatus)) | |
4d5d1aaa | 1662 | continue; |
b80864fb | 1663 | |
5b1c542e | 1664 | switch (ourstatus->kind) |
b80864fb | 1665 | { |
34b34921 | 1666 | case TARGET_WAITKIND_EXITED: |
b80864fb | 1667 | OUTMSG2 (("Child exited with retcode = %x\n", |
5b1c542e | 1668 | ourstatus->value.integer)); |
5ac588cf | 1669 | win32_clear_inferiors (); |
f2907e49 | 1670 | return ptid_t (current_event.dwProcessId); |
34b34921 | 1671 | case TARGET_WAITKIND_STOPPED: |
559e7e50 | 1672 | case TARGET_WAITKIND_SIGNALLED: |
1b3f6016 | 1673 | case TARGET_WAITKIND_LOADED: |
523d4f80 TT |
1674 | { |
1675 | OUTMSG2 (("Child Stopped with signal = %d \n", | |
1676 | ourstatus->value.sig)); | |
1677 | maybe_adjust_pc (); | |
1678 | return debug_event_ptid (¤t_event); | |
1679 | } | |
1b3f6016 | 1680 | default: |
5b1c542e | 1681 | OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind)); |
1b3f6016 PA |
1682 | /* fall-through */ |
1683 | case TARGET_WAITKIND_SPURIOUS: | |
34b34921 | 1684 | /* do nothing, just continue */ |
360ad8b3 | 1685 | child_continue (continue_status, desired_stop_thread_id); |
34b34921 | 1686 | break; |
b80864fb | 1687 | } |
b80864fb DJ |
1688 | } |
1689 | } | |
1690 | ||
1691 | /* Fetch registers from the inferior process. | |
1692 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
a5a4d4cd TBA |
1693 | void |
1694 | win32_process_target::fetch_registers (regcache *regcache, int regno) | |
b80864fb | 1695 | { |
442ea881 | 1696 | child_fetch_inferior_registers (regcache, regno); |
b80864fb DJ |
1697 | } |
1698 | ||
1699 | /* Store registers to the inferior process. | |
1700 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
a5a4d4cd TBA |
1701 | void |
1702 | win32_process_target::store_registers (regcache *regcache, int regno) | |
b80864fb | 1703 | { |
442ea881 | 1704 | child_store_inferior_registers (regcache, regno); |
b80864fb DJ |
1705 | } |
1706 | ||
1707 | /* Read memory from the inferior process. This should generally be | |
1708 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1709 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
e2558df3 TBA |
1710 | int |
1711 | win32_process_target::read_memory (CORE_ADDR memaddr, unsigned char *myaddr, | |
1712 | int len) | |
b80864fb | 1713 | { |
ed50f18f | 1714 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1715 | } |
1716 | ||
1717 | /* Write memory to the inferior process. This should generally be | |
1718 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1719 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1720 | Returns 0 on success and errno on failure. */ | |
e2558df3 TBA |
1721 | int |
1722 | win32_process_target::write_memory (CORE_ADDR memaddr, | |
1723 | const unsigned char *myaddr, int len) | |
b80864fb DJ |
1724 | { |
1725 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1726 | } | |
1727 | ||
7390519e | 1728 | /* Send an interrupt request to the inferior process. */ |
eb497a2a TBA |
1729 | void |
1730 | win32_process_target::request_interrupt () | |
7390519e PA |
1731 | { |
1732 | winapi_DebugBreakProcess DebugBreakProcess; | |
1733 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1734 | ||
1735 | #ifdef _WIN32_WCE | |
1736 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1737 | #else | |
1738 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1739 | #endif | |
1740 | ||
1741 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1742 | ||
1743 | if (GenerateConsoleCtrlEvent != NULL | |
1744 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1745 | return; | |
1746 | ||
1747 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1748 | not a process group id. | |
1749 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1750 | breakpoint exception in the interior process. */ | |
1751 | ||
1752 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1753 | ||
1754 | if (DebugBreakProcess != NULL | |
1755 | && DebugBreakProcess (current_process_handle)) | |
1756 | return; | |
1757 | ||
4d5d1aaa PA |
1758 | /* Last resort, suspend all threads manually. */ |
1759 | soft_interrupt_requested = 1; | |
7390519e PA |
1760 | } |
1761 | ||
22aa6223 TBA |
1762 | bool |
1763 | win32_process_target::supports_hardware_single_step () | |
1764 | { | |
1765 | return true; | |
1766 | } | |
1767 | ||
59a016f0 PA |
1768 | #ifdef _WIN32_WCE |
1769 | int | |
1770 | win32_error_to_fileio_error (DWORD err) | |
1771 | { | |
1772 | switch (err) | |
1773 | { | |
1774 | case ERROR_BAD_PATHNAME: | |
1775 | case ERROR_FILE_NOT_FOUND: | |
1776 | case ERROR_INVALID_NAME: | |
1777 | case ERROR_PATH_NOT_FOUND: | |
1778 | return FILEIO_ENOENT; | |
1779 | case ERROR_CRC: | |
1780 | case ERROR_IO_DEVICE: | |
1781 | case ERROR_OPEN_FAILED: | |
1782 | return FILEIO_EIO; | |
1783 | case ERROR_INVALID_HANDLE: | |
1784 | return FILEIO_EBADF; | |
1785 | case ERROR_ACCESS_DENIED: | |
1786 | case ERROR_SHARING_VIOLATION: | |
1787 | return FILEIO_EACCES; | |
1788 | case ERROR_NOACCESS: | |
1789 | return FILEIO_EFAULT; | |
1790 | case ERROR_BUSY: | |
1791 | return FILEIO_EBUSY; | |
1792 | case ERROR_ALREADY_EXISTS: | |
1793 | case ERROR_FILE_EXISTS: | |
1794 | return FILEIO_EEXIST; | |
1795 | case ERROR_BAD_DEVICE: | |
1796 | return FILEIO_ENODEV; | |
1797 | case ERROR_DIRECTORY: | |
1798 | return FILEIO_ENOTDIR; | |
1799 | case ERROR_FILENAME_EXCED_RANGE: | |
1800 | case ERROR_INVALID_DATA: | |
1801 | case ERROR_INVALID_PARAMETER: | |
1802 | case ERROR_NEGATIVE_SEEK: | |
1803 | return FILEIO_EINVAL; | |
1804 | case ERROR_TOO_MANY_OPEN_FILES: | |
1805 | return FILEIO_EMFILE; | |
1806 | case ERROR_HANDLE_DISK_FULL: | |
1807 | case ERROR_DISK_FULL: | |
1808 | return FILEIO_ENOSPC; | |
1809 | case ERROR_WRITE_PROTECT: | |
1810 | return FILEIO_EROFS; | |
1811 | case ERROR_NOT_SUPPORTED: | |
1812 | return FILEIO_ENOSYS; | |
1813 | } | |
1814 | ||
1815 | return FILEIO_EUNKNOWN; | |
1816 | } | |
1817 | ||
ea06bbaa TBA |
1818 | void |
1819 | win32_process_target::hostio_last_error (char *buf) | |
59a016f0 PA |
1820 | { |
1821 | DWORD winerr = GetLastError (); | |
1822 | int fileio_err = win32_error_to_fileio_error (winerr); | |
1823 | sprintf (buf, "F-1,%x", fileio_err); | |
1824 | } | |
1825 | #endif | |
1826 | ||
d7abedf7 TBA |
1827 | bool |
1828 | win32_process_target::supports_qxfer_siginfo () | |
1829 | { | |
1830 | return true; | |
1831 | } | |
1832 | ||
7928d571 HD |
1833 | /* Write Windows signal info. */ |
1834 | ||
d7abedf7 TBA |
1835 | int |
1836 | win32_process_target::qxfer_siginfo (const char *annex, | |
1837 | unsigned char *readbuf, | |
1838 | unsigned const char *writebuf, | |
1839 | CORE_ADDR offset, int len) | |
7928d571 HD |
1840 | { |
1841 | if (siginfo_er.ExceptionCode == 0) | |
1842 | return -1; | |
1843 | ||
1844 | if (readbuf == nullptr) | |
1845 | return -1; | |
1846 | ||
7d186bc0 HD |
1847 | char *buf = (char *) &siginfo_er; |
1848 | size_t bufsize = sizeof (siginfo_er); | |
1849 | ||
1850 | #ifdef __x86_64__ | |
1851 | EXCEPTION_RECORD32 er32; | |
1852 | if (wow64_process) | |
1853 | { | |
1854 | buf = (char *) &er32; | |
1855 | bufsize = sizeof (er32); | |
1856 | ||
1857 | er32.ExceptionCode = siginfo_er.ExceptionCode; | |
1858 | er32.ExceptionFlags = siginfo_er.ExceptionFlags; | |
1859 | er32.ExceptionRecord = (uintptr_t) siginfo_er.ExceptionRecord; | |
1860 | er32.ExceptionAddress = (uintptr_t) siginfo_er.ExceptionAddress; | |
1861 | er32.NumberParameters = siginfo_er.NumberParameters; | |
1862 | int i; | |
1863 | for (i = 0; i < EXCEPTION_MAXIMUM_PARAMETERS; i++) | |
1864 | er32.ExceptionInformation[i] = siginfo_er.ExceptionInformation[i]; | |
1865 | } | |
1866 | #endif | |
1867 | ||
1868 | if (offset > bufsize) | |
7928d571 HD |
1869 | return -1; |
1870 | ||
7d186bc0 HD |
1871 | if (offset + len > bufsize) |
1872 | len = bufsize - offset; | |
7928d571 | 1873 | |
7d186bc0 | 1874 | memcpy (readbuf, buf + offset, len); |
7928d571 HD |
1875 | |
1876 | return len; | |
1877 | } | |
1878 | ||
4e2e869c TBA |
1879 | bool |
1880 | win32_process_target::supports_get_tib_address () | |
1881 | { | |
1882 | return true; | |
1883 | } | |
1884 | ||
711e434b PM |
1885 | /* Write Windows OS Thread Information Block address. */ |
1886 | ||
4e2e869c TBA |
1887 | int |
1888 | win32_process_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
711e434b | 1889 | { |
e56f8ccb | 1890 | windows_thread_info *th; |
28688adf | 1891 | th = thread_rec (ptid, DONT_INVALIDATE_CONTEXT); |
711e434b PM |
1892 | if (th == NULL) |
1893 | return 0; | |
1894 | if (addr != NULL) | |
1895 | *addr = th->thread_local_base; | |
1896 | return 1; | |
1897 | } | |
1898 | ||
fb78e89c AT |
1899 | /* Implementation of the target_ops method "sw_breakpoint_from_kind". */ |
1900 | ||
d367006f TBA |
1901 | const gdb_byte * |
1902 | win32_process_target::sw_breakpoint_from_kind (int kind, int *size) | |
fb78e89c AT |
1903 | { |
1904 | *size = the_low_target.breakpoint_len; | |
1905 | return the_low_target.breakpoint; | |
1906 | } | |
1907 | ||
523d4f80 TT |
1908 | bool |
1909 | win32_process_target::stopped_by_sw_breakpoint () | |
1910 | { | |
1911 | windows_thread_info *th = thread_rec (current_thread_ptid (), | |
1912 | DONT_INVALIDATE_CONTEXT); | |
1913 | return th == nullptr ? false : th->stopped_at_software_breakpoint; | |
1914 | } | |
1915 | ||
1916 | bool | |
1917 | win32_process_target::supports_stopped_by_sw_breakpoint () | |
1918 | { | |
1919 | return true; | |
1920 | } | |
1921 | ||
d6225aff TT |
1922 | CORE_ADDR |
1923 | win32_process_target::read_pc (struct regcache *regcache) | |
1924 | { | |
1925 | return (*the_low_target.get_pc) (regcache); | |
1926 | } | |
1927 | ||
1928 | void | |
1929 | win32_process_target::write_pc (struct regcache *regcache, CORE_ADDR pc) | |
1930 | { | |
1931 | return (*the_low_target.set_pc) (regcache, pc); | |
1932 | } | |
1933 | ||
5ef9273d TBA |
1934 | /* The win32 target ops object. */ |
1935 | ||
1936 | static win32_process_target the_win32_target; | |
1937 | ||
b80864fb DJ |
1938 | /* Initialize the Win32 backend. */ |
1939 | void | |
1940 | initialize_low (void) | |
1941 | { | |
52405d85 | 1942 | set_target_ops (&the_win32_target); |
d05b4ac3 | 1943 | the_low_target.arch_setup (); |
7d186bc0 HD |
1944 | |
1945 | #ifdef __x86_64__ | |
1946 | /* These functions are loaded dynamically, because they are not available | |
1947 | on Windows XP. */ | |
1948 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1949 | win32_Wow64GetThreadContext = GETPROCADDRESS (dll, Wow64GetThreadContext); | |
1950 | win32_Wow64SetThreadContext = GETPROCADDRESS (dll, Wow64SetThreadContext); | |
1951 | #endif | |
b80864fb | 1952 | } |