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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 DJ |
38 | |
39 | #ifndef USE_WIN32API | |
40 | #include <sys/cygwin.h> | |
41 | #endif | |
42 | ||
10357975 PA |
43 | #define OUTMSG(X) do { printf X; fflush (stderr); } while (0) |
44 | ||
45 | #define OUTMSG2(X) \ | |
46 | do \ | |
47 | { \ | |
48 | if (debug_threads) \ | |
49 | { \ | |
50 | printf X; \ | |
51 | fflush (stderr); \ | |
52 | } \ | |
53 | } while (0) | |
ed50f18f PA |
54 | |
55 | #ifndef _T | |
56 | #define _T(x) TEXT (x) | |
57 | #endif | |
58 | ||
59 | #ifndef COUNTOF | |
60 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
61 | #endif |
62 | ||
bf914831 PA |
63 | #ifdef _WIN32_WCE |
64 | # define GETPROCADDRESS(DLL, PROC) \ | |
65 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) | |
66 | #else | |
67 | # define GETPROCADDRESS(DLL, PROC) \ | |
68 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) | |
69 | #endif | |
70 | ||
b80864fb DJ |
71 | int using_threads = 1; |
72 | ||
73 | /* Globals. */ | |
d97903b2 | 74 | static int attaching = 0; |
b80864fb DJ |
75 | static HANDLE current_process_handle = NULL; |
76 | static DWORD current_process_id = 0; | |
5ac588cf | 77 | static DWORD main_thread_id = 0; |
a493e3e2 | 78 | static enum gdb_signal last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
79 | |
80 | /* The current debug event from WaitForDebugEvent. */ | |
81 | static DEBUG_EVENT current_event; | |
82 | ||
4210d83e PA |
83 | /* A status that hasn't been reported to the core yet, and so |
84 | win32_wait should return it next, instead of fetching the next | |
85 | debug event off the win32 API. */ | |
86 | static struct target_waitstatus cached_status; | |
87 | ||
4d5d1aaa PA |
88 | /* Non zero if an interrupt request is to be satisfied by suspending |
89 | all threads. */ | |
90 | static int soft_interrupt_requested = 0; | |
91 | ||
92 | /* Non zero if the inferior is stopped in a simulated breakpoint done | |
93 | by suspending all the threads. */ | |
94 | static int faked_breakpoint = 0; | |
95 | ||
3aee8918 PA |
96 | const struct target_desc *win32_tdesc; |
97 | ||
ed50f18f | 98 | #define NUM_REGS (the_low_target.num_regs) |
b80864fb | 99 | |
7a9a7487 MG |
100 | typedef BOOL (WINAPI *winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
101 | typedef BOOL (WINAPI *winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); | |
102 | typedef BOOL (WINAPI *winapi_DebugBreakProcess) (HANDLE); | |
103 | typedef BOOL (WINAPI *winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); | |
b80864fb | 104 | |
4210d83e PA |
105 | static ptid_t win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, |
106 | int options); | |
2bd7c093 | 107 | static void win32_resume (struct thread_resume *resume_info, size_t n); |
379a5e2d | 108 | #ifndef _WIN32_WCE |
f25b3fc3 | 109 | static void win32_add_all_dlls (void); |
379a5e2d | 110 | #endif |
34b34921 | 111 | |
b80864fb DJ |
112 | /* Get the thread ID from the current selected inferior (the current |
113 | thread). */ | |
95954743 | 114 | static ptid_t |
0bfdf32f | 115 | current_thread_ptid (void) |
b80864fb | 116 | { |
80894984 | 117 | return current_ptid; |
95954743 PA |
118 | } |
119 | ||
120 | /* The current debug event from WaitForDebugEvent. */ | |
121 | static ptid_t | |
122 | debug_event_ptid (DEBUG_EVENT *event) | |
123 | { | |
fd79271b | 124 | return ptid_t (event->dwProcessId, event->dwThreadId, 0); |
b80864fb DJ |
125 | } |
126 | ||
9c6c8194 PA |
127 | /* Get the thread context of the thread associated with TH. */ |
128 | ||
129 | static void | |
130 | win32_get_thread_context (win32_thread_info *th) | |
131 | { | |
132 | memset (&th->context, 0, sizeof (CONTEXT)); | |
a2abc7de | 133 | (*the_low_target.get_thread_context) (th); |
9c6c8194 PA |
134 | #ifdef _WIN32_WCE |
135 | memcpy (&th->base_context, &th->context, sizeof (CONTEXT)); | |
136 | #endif | |
137 | } | |
138 | ||
139 | /* Set the thread context of the thread associated with TH. */ | |
140 | ||
141 | static void | |
142 | win32_set_thread_context (win32_thread_info *th) | |
143 | { | |
144 | #ifdef _WIN32_WCE | |
145 | /* Calling SuspendThread on a thread that is running kernel code | |
146 | will report that the suspending was successful, but in fact, that | |
147 | will often not be true. In those cases, the context returned by | |
148 | GetThreadContext will not be correct by the time the thread | |
149 | stops, hence we can't set that context back into the thread when | |
30baf67b | 150 | resuming - it will most likely crash the inferior. |
9c6c8194 PA |
151 | Unfortunately, there is no way to know when the thread will |
152 | really stop. To work around it, we'll only write the context | |
153 | back to the thread when either the user or GDB explicitly change | |
154 | it between stopping and resuming. */ | |
155 | if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0) | |
156 | #endif | |
a2abc7de | 157 | SetThreadContext (th->h, &th->context); |
9c6c8194 PA |
158 | } |
159 | ||
a2abc7de PA |
160 | /* Set the thread context of the thread associated with TH. */ |
161 | ||
162 | static void | |
163 | win32_prepare_to_resume (win32_thread_info *th) | |
b80864fb | 164 | { |
a2abc7de PA |
165 | if (the_low_target.prepare_to_resume != NULL) |
166 | (*the_low_target.prepare_to_resume) (th); | |
167 | } | |
b80864fb | 168 | |
a2abc7de | 169 | /* See win32-low.h. */ |
b80864fb | 170 | |
a2abc7de PA |
171 | void |
172 | win32_require_context (win32_thread_info *th) | |
173 | { | |
174 | if (th->context.ContextFlags == 0) | |
b80864fb | 175 | { |
c436e841 PA |
176 | if (!th->suspended) |
177 | { | |
178 | if (SuspendThread (th->h) == (DWORD) -1) | |
179 | { | |
180 | DWORD err = GetLastError (); | |
181 | OUTMSG (("warning: SuspendThread failed in thread_rec, " | |
182 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
183 | } | |
184 | else | |
185 | th->suspended = 1; | |
186 | } | |
b80864fb | 187 | |
9c6c8194 | 188 | win32_get_thread_context (th); |
b80864fb | 189 | } |
a2abc7de PA |
190 | } |
191 | ||
192 | /* Find a thread record given a thread id. If GET_CONTEXT is set then | |
193 | also retrieve the context for this thread. */ | |
194 | static win32_thread_info * | |
195 | thread_rec (ptid_t ptid, int get_context) | |
196 | { | |
8dc7b443 | 197 | thread_info *thread = find_thread_ptid (ptid); |
a2abc7de PA |
198 | if (thread == NULL) |
199 | return NULL; | |
200 | ||
8dc7b443 | 201 | win32_thread_info *th = (win32_thread_info *) thread_target_data (thread); |
a2abc7de PA |
202 | if (get_context) |
203 | win32_require_context (th); | |
b80864fb DJ |
204 | return th; |
205 | } | |
206 | ||
207 | /* Add a thread to the thread list. */ | |
41093d81 | 208 | static win32_thread_info * |
711e434b | 209 | child_add_thread (DWORD pid, DWORD tid, HANDLE h, void *tlb) |
b80864fb | 210 | { |
41093d81 | 211 | win32_thread_info *th; |
fd79271b | 212 | ptid_t ptid = ptid_t (pid, tid, 0); |
b80864fb | 213 | |
95954743 | 214 | if ((th = thread_rec (ptid, FALSE))) |
b80864fb DJ |
215 | return th; |
216 | ||
8d749320 | 217 | th = XCNEW (win32_thread_info); |
b80864fb DJ |
218 | th->tid = tid; |
219 | th->h = h; | |
711e434b | 220 | th->thread_local_base = (CORE_ADDR) (uintptr_t) tlb; |
b80864fb | 221 | |
95954743 | 222 | add_thread (ptid, th); |
b80864fb | 223 | |
34b34921 PA |
224 | if (the_low_target.thread_added != NULL) |
225 | (*the_low_target.thread_added) (th); | |
b80864fb DJ |
226 | |
227 | return th; | |
228 | } | |
229 | ||
230 | /* Delete a thread from the list of threads. */ | |
231 | static void | |
9c80ecd6 | 232 | delete_thread_info (thread_info *thread) |
b80864fb | 233 | { |
6afd337d | 234 | win32_thread_info *th = (win32_thread_info *) thread_target_data (thread); |
b80864fb | 235 | |
c3de4d92 | 236 | remove_thread (thread); |
b80864fb DJ |
237 | CloseHandle (th->h); |
238 | free (th); | |
239 | } | |
240 | ||
241 | /* Delete a thread from the list of threads. */ | |
242 | static void | |
95954743 | 243 | child_delete_thread (DWORD pid, DWORD tid) |
b80864fb | 244 | { |
b80864fb | 245 | /* If the last thread is exiting, just return. */ |
9c80ecd6 | 246 | if (all_threads.size () == 1) |
b80864fb DJ |
247 | return; |
248 | ||
8dc7b443 | 249 | thread_info *thread = find_thread_ptid (ptid_t (pid, tid)); |
b80864fb DJ |
250 | if (thread == NULL) |
251 | return; | |
252 | ||
253 | delete_thread_info (thread); | |
254 | } | |
255 | ||
aa5ca48f DE |
256 | /* These watchpoint related wrapper functions simply pass on the function call |
257 | if the low target has registered a corresponding function. */ | |
258 | ||
259 | static int | |
802e8e6d PA |
260 | win32_supports_z_point_type (char z_type) |
261 | { | |
262 | return (the_low_target.supports_z_point_type != NULL | |
263 | && the_low_target.supports_z_point_type (z_type)); | |
264 | } | |
265 | ||
266 | static int | |
267 | win32_insert_point (enum raw_bkpt_type type, CORE_ADDR addr, | |
268 | int size, struct raw_breakpoint *bp) | |
aa5ca48f DE |
269 | { |
270 | if (the_low_target.insert_point != NULL) | |
802e8e6d | 271 | return the_low_target.insert_point (type, addr, size, bp); |
aa5ca48f DE |
272 | else |
273 | /* Unsupported (see target.h). */ | |
274 | return 1; | |
275 | } | |
276 | ||
277 | static int | |
802e8e6d PA |
278 | win32_remove_point (enum raw_bkpt_type type, CORE_ADDR addr, |
279 | int size, struct raw_breakpoint *bp) | |
aa5ca48f DE |
280 | { |
281 | if (the_low_target.remove_point != NULL) | |
802e8e6d | 282 | return the_low_target.remove_point (type, addr, size, bp); |
aa5ca48f DE |
283 | else |
284 | /* Unsupported (see target.h). */ | |
285 | return 1; | |
286 | } | |
287 | ||
288 | static int | |
289 | win32_stopped_by_watchpoint (void) | |
290 | { | |
291 | if (the_low_target.stopped_by_watchpoint != NULL) | |
292 | return the_low_target.stopped_by_watchpoint (); | |
293 | else | |
294 | return 0; | |
295 | } | |
296 | ||
297 | static CORE_ADDR | |
298 | win32_stopped_data_address (void) | |
299 | { | |
300 | if (the_low_target.stopped_data_address != NULL) | |
301 | return the_low_target.stopped_data_address (); | |
302 | else | |
303 | return 0; | |
304 | } | |
305 | ||
306 | ||
b80864fb DJ |
307 | /* Transfer memory from/to the debugged process. */ |
308 | static int | |
309 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
310 | int write, struct target_ops *target) | |
311 | { | |
cee83bcb PM |
312 | BOOL success; |
313 | SIZE_T done = 0; | |
314 | DWORD lasterror = 0; | |
e8f0053d | 315 | uintptr_t addr = (uintptr_t) memaddr; |
b80864fb DJ |
316 | |
317 | if (write) | |
318 | { | |
cee83bcb PM |
319 | success = WriteProcessMemory (current_process_handle, (LPVOID) addr, |
320 | (LPCVOID) our, len, &done); | |
321 | if (!success) | |
322 | lasterror = GetLastError (); | |
b80864fb DJ |
323 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); |
324 | } | |
325 | else | |
326 | { | |
cee83bcb PM |
327 | success = ReadProcessMemory (current_process_handle, (LPCVOID) addr, |
328 | (LPVOID) our, len, &done); | |
329 | if (!success) | |
330 | lasterror = GetLastError (); | |
b80864fb | 331 | } |
cee83bcb PM |
332 | if (!success && lasterror == ERROR_PARTIAL_COPY && done > 0) |
333 | return done; | |
334 | else | |
335 | return success ? done : -1; | |
b80864fb DJ |
336 | } |
337 | ||
ed50f18f | 338 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
339 | state. */ |
340 | static void | |
341 | child_init_thread_list (void) | |
342 | { | |
f0045347 | 343 | for_each_thread (delete_thread_info); |
b80864fb DJ |
344 | } |
345 | ||
f25b3fc3 JB |
346 | /* Zero during the child initialization phase, and nonzero otherwise. */ |
347 | ||
348 | static int child_initialization_done = 0; | |
349 | ||
b80864fb | 350 | static void |
95954743 | 351 | do_initial_child_stuff (HANDLE proch, DWORD pid, int attached) |
b80864fb | 352 | { |
3aee8918 PA |
353 | struct process_info *proc; |
354 | ||
a493e3e2 | 355 | last_sig = GDB_SIGNAL_0; |
b80864fb | 356 | |
5ac588cf PA |
357 | current_process_handle = proch; |
358 | current_process_id = pid; | |
359 | main_thread_id = 0; | |
360 | ||
361 | soft_interrupt_requested = 0; | |
362 | faked_breakpoint = 0; | |
363 | ||
b80864fb DJ |
364 | memset (¤t_event, 0, sizeof (current_event)); |
365 | ||
3aee8918 PA |
366 | proc = add_process (pid, attached); |
367 | proc->tdesc = win32_tdesc; | |
b80864fb | 368 | child_init_thread_list (); |
f25b3fc3 | 369 | child_initialization_done = 0; |
ed50f18f PA |
370 | |
371 | if (the_low_target.initial_stuff != NULL) | |
372 | (*the_low_target.initial_stuff) (); | |
4210d83e PA |
373 | |
374 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
375 | ||
376 | /* Flush all currently pending debug events (thread and dll list) up | |
377 | to the initial breakpoint. */ | |
378 | while (1) | |
379 | { | |
380 | struct target_waitstatus status; | |
381 | ||
382 | win32_wait (minus_one_ptid, &status, 0); | |
383 | ||
384 | /* Note win32_wait doesn't return thread events. */ | |
385 | if (status.kind != TARGET_WAITKIND_LOADED) | |
386 | { | |
387 | cached_status = status; | |
388 | break; | |
389 | } | |
390 | ||
391 | { | |
392 | struct thread_resume resume; | |
393 | ||
394 | resume.thread = minus_one_ptid; | |
395 | resume.kind = resume_continue; | |
396 | resume.sig = 0; | |
397 | ||
398 | win32_resume (&resume, 1); | |
399 | } | |
400 | } | |
379a5e2d JB |
401 | |
402 | #ifndef _WIN32_WCE | |
f25b3fc3 JB |
403 | /* Now that the inferior has been started and all DLLs have been mapped, |
404 | we can iterate over all DLLs and load them in. | |
405 | ||
406 | We avoid doing it any earlier because, on certain versions of Windows, | |
407 | LOAD_DLL_DEBUG_EVENTs are sometimes not complete. In particular, | |
408 | we have seen on Windows 8.1 that the ntdll.dll load event does not | |
409 | include the DLL name, preventing us from creating an associated SO. | |
410 | A possible explanation is that ntdll.dll might be mapped before | |
411 | the SO info gets created by the Windows system -- ntdll.dll is | |
412 | the first DLL to be reported via LOAD_DLL_DEBUG_EVENT and other DLLs | |
413 | do not seem to suffer from that problem. | |
414 | ||
415 | Rather than try to work around this sort of issue, it is much | |
416 | simpler to just ignore DLL load/unload events during the startup | |
417 | phase, and then process them all in one batch now. */ | |
418 | win32_add_all_dlls (); | |
379a5e2d | 419 | #endif |
f25b3fc3 JB |
420 | |
421 | child_initialization_done = 1; | |
b80864fb DJ |
422 | } |
423 | ||
424 | /* Resume all artificially suspended threads if we are continuing | |
425 | execution. */ | |
2bee2b6c SM |
426 | static void |
427 | continue_one_thread (thread_info *thread, int thread_id) | |
b80864fb | 428 | { |
6afd337d | 429 | win32_thread_info *th = (win32_thread_info *) thread_target_data (thread); |
b80864fb | 430 | |
a2abc7de | 431 | if (thread_id == -1 || thread_id == th->tid) |
b80864fb | 432 | { |
a2abc7de | 433 | win32_prepare_to_resume (th); |
34b34921 | 434 | |
a2abc7de | 435 | if (th->suspended) |
c436e841 | 436 | { |
a2abc7de PA |
437 | if (th->context.ContextFlags) |
438 | { | |
439 | win32_set_thread_context (th); | |
440 | th->context.ContextFlags = 0; | |
441 | } | |
442 | ||
443 | if (ResumeThread (th->h) == (DWORD) -1) | |
444 | { | |
445 | DWORD err = GetLastError (); | |
446 | OUTMSG (("warning: ResumeThread failed in continue_one_thread, " | |
447 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
448 | } | |
449 | th->suspended = 0; | |
c436e841 | 450 | } |
b80864fb | 451 | } |
b80864fb DJ |
452 | } |
453 | ||
454 | static BOOL | |
455 | child_continue (DWORD continue_status, int thread_id) | |
456 | { | |
4d5d1aaa PA |
457 | /* The inferior will only continue after the ContinueDebugEvent |
458 | call. */ | |
2bee2b6c SM |
459 | for_each_thread ([&] (thread_info *thread) |
460 | { | |
461 | continue_one_thread (thread, thread_id); | |
462 | }); | |
4d5d1aaa | 463 | faked_breakpoint = 0; |
b80864fb | 464 | |
4d5d1aaa PA |
465 | if (!ContinueDebugEvent (current_event.dwProcessId, |
466 | current_event.dwThreadId, | |
467 | continue_status)) | |
468 | return FALSE; | |
b80864fb | 469 | |
4d5d1aaa | 470 | return TRUE; |
b80864fb DJ |
471 | } |
472 | ||
b80864fb DJ |
473 | /* Fetch register(s) from the current thread context. */ |
474 | static void | |
442ea881 | 475 | child_fetch_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
476 | { |
477 | int regno; | |
0bfdf32f | 478 | win32_thread_info *th = thread_rec (current_thread_ptid (), TRUE); |
4463ce24 | 479 | if (r == -1 || r > NUM_REGS) |
442ea881 | 480 | child_fetch_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
481 | else |
482 | for (regno = 0; regno < r; regno++) | |
442ea881 | 483 | (*the_low_target.fetch_inferior_register) (regcache, th, regno); |
b80864fb DJ |
484 | } |
485 | ||
486 | /* Store a new register value into the current thread context. We don't | |
487 | change the program's context until later, when we resume it. */ | |
488 | static void | |
442ea881 | 489 | child_store_inferior_registers (struct regcache *regcache, int r) |
b80864fb DJ |
490 | { |
491 | int regno; | |
0bfdf32f | 492 | win32_thread_info *th = thread_rec (current_thread_ptid (), TRUE); |
b80864fb | 493 | if (r == -1 || r == 0 || r > NUM_REGS) |
442ea881 | 494 | child_store_inferior_registers (regcache, NUM_REGS); |
b80864fb DJ |
495 | else |
496 | for (regno = 0; regno < r; regno++) | |
442ea881 | 497 | (*the_low_target.store_inferior_register) (regcache, th, regno); |
b80864fb DJ |
498 | } |
499 | ||
ed50f18f PA |
500 | /* Map the Windows error number in ERROR to a locale-dependent error |
501 | message string and return a pointer to it. Typically, the values | |
502 | for ERROR come from GetLastError. | |
503 | ||
504 | The string pointed to shall not be modified by the application, | |
505 | but may be overwritten by a subsequent call to strwinerror | |
506 | ||
507 | The strwinerror function does not change the current setting | |
508 | of GetLastError. */ | |
509 | ||
510 | char * | |
511 | strwinerror (DWORD error) | |
512 | { | |
513 | static char buf[1024]; | |
514 | TCHAR *msgbuf; | |
515 | DWORD lasterr = GetLastError (); | |
516 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
517 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
518 | NULL, | |
519 | error, | |
520 | 0, /* Default language */ | |
c3de4d92 | 521 | (LPTSTR) &msgbuf, |
ed50f18f PA |
522 | 0, |
523 | NULL); | |
524 | if (chars != 0) | |
525 | { | |
526 | /* If there is an \r\n appended, zap it. */ | |
527 | if (chars >= 2 | |
528 | && msgbuf[chars - 2] == '\r' | |
529 | && msgbuf[chars - 1] == '\n') | |
530 | { | |
531 | chars -= 2; | |
532 | msgbuf[chars] = 0; | |
533 | } | |
534 | ||
535 | if (chars > ((COUNTOF (buf)) - 1)) | |
536 | { | |
537 | chars = COUNTOF (buf) - 1; | |
538 | msgbuf [chars] = 0; | |
539 | } | |
540 | ||
541 | #ifdef UNICODE | |
542 | wcstombs (buf, msgbuf, chars + 1); | |
543 | #else | |
544 | strncpy (buf, msgbuf, chars + 1); | |
545 | #endif | |
546 | LocalFree (msgbuf); | |
547 | } | |
548 | else | |
dfe07582 | 549 | sprintf (buf, "unknown win32 error (%u)", (unsigned) error); |
ed50f18f PA |
550 | |
551 | SetLastError (lasterr); | |
552 | return buf; | |
553 | } | |
554 | ||
aec18585 PA |
555 | static BOOL |
556 | create_process (const char *program, char *args, | |
557 | DWORD flags, PROCESS_INFORMATION *pi) | |
558 | { | |
bc3b087d | 559 | const char *inferior_cwd = get_inferior_cwd (); |
aec18585 PA |
560 | BOOL ret; |
561 | ||
562 | #ifdef _WIN32_WCE | |
bc3b087d | 563 | wchar_t *p, *wprogram, *wargs, *wcwd = NULL; |
aec18585 PA |
564 | size_t argslen; |
565 | ||
566 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
567 | mbstowcs (wprogram, program, strlen (program) + 1); | |
568 | ||
569 | for (p = wprogram; *p; ++p) | |
570 | if (L'/' == *p) | |
571 | *p = L'\\'; | |
572 | ||
573 | argslen = strlen (args); | |
574 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); | |
575 | mbstowcs (wargs, args, argslen + 1); | |
576 | ||
bc3b087d SDJ |
577 | if (inferior_cwd != NULL) |
578 | { | |
906994d9 | 579 | std::string expanded_infcwd = gdb_tilde_expand (inferior_cwd); |
bc3b087d SDJ |
580 | std::replace (expanded_infcwd.begin (), expanded_infcwd.end (), |
581 | '/', '\\'); | |
582 | wcwd = alloca ((expanded_infcwd.size () + 1) * sizeof (wchar_t)); | |
583 | if (mbstowcs (wcwd, expanded_infcwd.c_str (), | |
584 | expanded_infcwd.size () + 1) == NULL) | |
585 | { | |
586 | error (_("\ | |
587 | Could not convert the expanded inferior cwd to wide-char.")); | |
588 | } | |
589 | } | |
590 | ||
aec18585 | 591 | ret = CreateProcessW (wprogram, /* image name */ |
1b3f6016 PA |
592 | wargs, /* command line */ |
593 | NULL, /* security, not supported */ | |
594 | NULL, /* thread, not supported */ | |
595 | FALSE, /* inherit handles, not supported */ | |
596 | flags, /* start flags */ | |
597 | NULL, /* environment, not supported */ | |
bc3b087d | 598 | wcwd, /* current directory */ |
1b3f6016 PA |
599 | NULL, /* start info, not supported */ |
600 | pi); /* proc info */ | |
aec18585 PA |
601 | #else |
602 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; | |
603 | ||
604 | ret = CreateProcessA (program, /* image name */ | |
605 | args, /* command line */ | |
606 | NULL, /* security */ | |
607 | NULL, /* thread */ | |
608 | TRUE, /* inherit handles */ | |
609 | flags, /* start flags */ | |
610 | NULL, /* environment */ | |
906994d9 JB |
611 | /* current directory */ |
612 | (inferior_cwd == NULL | |
613 | ? NULL | |
614 | : gdb_tilde_expand (inferior_cwd).c_str()), | |
aec18585 PA |
615 | &si, /* start info */ |
616 | pi); /* proc info */ | |
617 | #endif | |
618 | ||
619 | return ret; | |
620 | } | |
621 | ||
b80864fb | 622 | /* Start a new process. |
2090129c SDJ |
623 | PROGRAM is the program name. |
624 | PROGRAM_ARGS is the vector containing the inferior's args. | |
b80864fb DJ |
625 | Returns the new PID on success, -1 on failure. Registers the new |
626 | process with the process list. */ | |
627 | static int | |
2090129c SDJ |
628 | win32_create_inferior (const char *program, |
629 | const std::vector<char *> &program_args) | |
b80864fb | 630 | { |
6341380d | 631 | client_state &cs = get_client_state (); |
b80864fb | 632 | #ifndef USE_WIN32API |
d8d2a3ee | 633 | char real_path[PATH_MAX]; |
b80864fb DJ |
634 | char *orig_path, *new_path, *path_ptr; |
635 | #endif | |
b80864fb DJ |
636 | BOOL ret; |
637 | DWORD flags; | |
ed50f18f | 638 | PROCESS_INFORMATION pi; |
aec18585 | 639 | DWORD err; |
2090129c SDJ |
640 | std::string str_program_args = stringify_argv (program_args); |
641 | char *args = (char *) str_program_args.c_str (); | |
b80864fb | 642 | |
d97903b2 PA |
643 | /* win32_wait needs to know we're not attaching. */ |
644 | attaching = 0; | |
645 | ||
b80864fb DJ |
646 | if (!program) |
647 | error ("No executable specified, specify executable to debug.\n"); | |
648 | ||
b80864fb DJ |
649 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
650 | ||
651 | #ifndef USE_WIN32API | |
652 | orig_path = NULL; | |
653 | path_ptr = getenv ("PATH"); | |
654 | if (path_ptr) | |
655 | { | |
81239425 | 656 | int size = cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, NULL, 0); |
0ae534d2 JT |
657 | orig_path = (char *) alloca (strlen (path_ptr) + 1); |
658 | new_path = (char *) alloca (size); | |
b80864fb | 659 | strcpy (orig_path, path_ptr); |
81239425 | 660 | cygwin_conv_path_list (CCP_POSIX_TO_WIN_A, path_ptr, new_path, size); |
b80864fb | 661 | setenv ("PATH", new_path, 1); |
81239425 | 662 | } |
d8d2a3ee | 663 | cygwin_conv_path (CCP_POSIX_TO_WIN_A, program, real_path, PATH_MAX); |
b80864fb DJ |
664 | program = real_path; |
665 | #endif | |
666 | ||
ed50f18f | 667 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 668 | |
ed50f18f | 669 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 670 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 671 | #endif |
b80864fb | 672 | |
aec18585 PA |
673 | ret = create_process (program, args, flags, &pi); |
674 | err = GetLastError (); | |
675 | if (!ret && err == ERROR_FILE_NOT_FOUND) | |
676 | { | |
c3de4d92 | 677 | char *exename = (char *) alloca (strlen (program) + 5); |
aec18585 PA |
678 | strcat (strcpy (exename, program), ".exe"); |
679 | ret = create_process (exename, args, flags, &pi); | |
680 | err = GetLastError (); | |
681 | } | |
b80864fb DJ |
682 | |
683 | #ifndef USE_WIN32API | |
684 | if (orig_path) | |
685 | setenv ("PATH", orig_path, 1); | |
686 | #endif | |
687 | ||
688 | if (!ret) | |
689 | { | |
ed50f18f PA |
690 | error ("Error creating process \"%s%s\", (error %d): %s\n", |
691 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
692 | } |
693 | else | |
694 | { | |
695 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
696 | } | |
697 | ||
ed50f18f PA |
698 | #ifndef _WIN32_WCE |
699 | /* On Windows CE this handle can't be closed. The OS reuses | |
700 | it in the debug events, while the 9x/NT versions of Windows | |
701 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 702 | CloseHandle (pi.hThread); |
ed50f18f | 703 | #endif |
b80864fb | 704 | |
95954743 | 705 | do_initial_child_stuff (pi.hProcess, pi.dwProcessId, 0); |
b80864fb | 706 | |
7dbac825 JB |
707 | /* Wait till we are at 1st instruction in program, return new pid |
708 | (assuming success). */ | |
f2907e49 | 709 | cs.last_ptid = win32_wait (ptid_t (current_process_id), &cs.last_status, 0); |
7dbac825 | 710 | |
b80864fb DJ |
711 | return current_process_id; |
712 | } | |
713 | ||
714 | /* Attach to a running process. | |
715 | PID is the process ID to attach to, specified by the user | |
716 | or a higher layer. */ | |
717 | static int | |
718 | win32_attach (unsigned long pid) | |
719 | { | |
5ca906e6 | 720 | HANDLE h; |
bf914831 | 721 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
5ca906e6 | 722 | DWORD err; |
ed50f18f PA |
723 | #ifdef _WIN32_WCE |
724 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
725 | #else | |
726 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
727 | #endif | |
bf914831 | 728 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
b80864fb | 729 | |
5ca906e6 PA |
730 | h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
731 | if (h != NULL) | |
1d5315fe | 732 | { |
5ca906e6 PA |
733 | if (DebugActiveProcess (pid)) |
734 | { | |
735 | if (DebugSetProcessKillOnExit != NULL) | |
736 | DebugSetProcessKillOnExit (FALSE); | |
737 | ||
d97903b2 | 738 | /* win32_wait needs to know we're attaching. */ |
1b3f6016 | 739 | attaching = 1; |
95954743 | 740 | do_initial_child_stuff (h, pid, 1); |
5ca906e6 PA |
741 | return 0; |
742 | } | |
743 | ||
744 | CloseHandle (h); | |
b80864fb DJ |
745 | } |
746 | ||
5ca906e6 PA |
747 | err = GetLastError (); |
748 | error ("Attach to process failed (error %d): %s\n", | |
749 | (int) err, strwinerror (err)); | |
b80864fb DJ |
750 | } |
751 | ||
bce7165d PA |
752 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
753 | static void | |
c0879059 | 754 | handle_output_debug_string (void) |
bce7165d PA |
755 | { |
756 | #define READ_BUFFER_LEN 1024 | |
757 | CORE_ADDR addr; | |
758 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
759 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
760 | ||
761 | if (nbytes == 0) | |
762 | return; | |
763 | ||
764 | if (nbytes > READ_BUFFER_LEN) | |
765 | nbytes = READ_BUFFER_LEN; | |
766 | ||
767 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
768 | ||
769 | if (current_event.u.DebugString.fUnicode) | |
770 | { | |
771 | /* The event tells us how many bytes, not chars, even | |
1b3f6016 | 772 | in Unicode. */ |
bce7165d PA |
773 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; |
774 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
775 | return; | |
776 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
777 | } | |
778 | else | |
779 | { | |
780 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
781 | return; | |
782 | } | |
783 | ||
61012eef | 784 | if (!startswith (s, "cYg")) |
45e2715e PA |
785 | { |
786 | if (!server_waiting) | |
787 | { | |
788 | OUTMSG2(("%s", s)); | |
789 | return; | |
790 | } | |
791 | ||
792 | monitor_output (s); | |
793 | } | |
bce7165d PA |
794 | #undef READ_BUFFER_LEN |
795 | } | |
796 | ||
5ac588cf PA |
797 | static void |
798 | win32_clear_inferiors (void) | |
799 | { | |
800 | if (current_process_handle != NULL) | |
801 | CloseHandle (current_process_handle); | |
802 | ||
f0045347 | 803 | for_each_thread (delete_thread_info); |
5ac588cf PA |
804 | clear_inferiors (); |
805 | } | |
806 | ||
a780ef4f PA |
807 | /* Implementation of target_ops::kill. */ |
808 | ||
95954743 | 809 | static int |
a780ef4f | 810 | win32_kill (process_info *process) |
b80864fb DJ |
811 | { |
812 | TerminateProcess (current_process_handle, 0); | |
813 | for (;;) | |
814 | { | |
815 | if (!child_continue (DBG_CONTINUE, -1)) | |
816 | break; | |
817 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
818 | break; | |
819 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
820 | break; | |
bce7165d | 821 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
c0879059 | 822 | handle_output_debug_string (); |
b80864fb | 823 | } |
ed50f18f | 824 | |
5ac588cf | 825 | win32_clear_inferiors (); |
95954743 | 826 | |
95954743 PA |
827 | remove_process (process); |
828 | return 0; | |
b80864fb DJ |
829 | } |
830 | ||
ef2ddb33 PA |
831 | /* Implementation of target_ops::detach. */ |
832 | ||
444d6139 | 833 | static int |
ef2ddb33 | 834 | win32_detach (process_info *process) |
b80864fb | 835 | { |
bf914831 PA |
836 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
837 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
838 | #ifdef _WIN32_WCE |
839 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
840 | #else | |
841 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
842 | #endif | |
bf914831 PA |
843 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
844 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); | |
b80864fb | 845 | |
444d6139 PA |
846 | if (DebugSetProcessKillOnExit == NULL |
847 | || DebugActiveProcessStop == NULL) | |
848 | return -1; | |
b80864fb | 849 | |
444d6139 PA |
850 | { |
851 | struct thread_resume resume; | |
95954743 | 852 | resume.thread = minus_one_ptid; |
bd99dc85 | 853 | resume.kind = resume_continue; |
444d6139 | 854 | resume.sig = 0; |
2bd7c093 | 855 | win32_resume (&resume, 1); |
444d6139 PA |
856 | } |
857 | ||
858 | if (!DebugActiveProcessStop (current_process_id)) | |
5ac588cf PA |
859 | return -1; |
860 | ||
444d6139 | 861 | DebugSetProcessKillOnExit (FALSE); |
95954743 | 862 | remove_process (process); |
444d6139 | 863 | |
5ac588cf | 864 | win32_clear_inferiors (); |
444d6139 PA |
865 | return 0; |
866 | } | |
867 | ||
505106cd PA |
868 | static void |
869 | win32_mourn (struct process_info *process) | |
870 | { | |
871 | remove_process (process); | |
872 | } | |
873 | ||
ef2ddb33 PA |
874 | /* Implementation of target_ops::join. */ |
875 | ||
444d6139 | 876 | static void |
d105de22 | 877 | win32_join (int pid) |
444d6139 | 878 | { |
d105de22 | 879 | HANDLE h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
5ac588cf PA |
880 | if (h != NULL) |
881 | { | |
882 | WaitForSingleObject (h, INFINITE); | |
883 | CloseHandle (h); | |
884 | } | |
b80864fb DJ |
885 | } |
886 | ||
887 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
888 | static int | |
95954743 | 889 | win32_thread_alive (ptid_t ptid) |
b80864fb | 890 | { |
b80864fb DJ |
891 | /* Our thread list is reliable; don't bother to poll target |
892 | threads. */ | |
8dc7b443 | 893 | return find_thread_ptid (ptid) != NULL; |
b80864fb DJ |
894 | } |
895 | ||
896 | /* Resume the inferior process. RESUME_INFO describes how we want | |
897 | to resume. */ | |
898 | static void | |
2bd7c093 | 899 | win32_resume (struct thread_resume *resume_info, size_t n) |
b80864fb DJ |
900 | { |
901 | DWORD tid; | |
2ea28649 | 902 | enum gdb_signal sig; |
b80864fb | 903 | int step; |
41093d81 | 904 | win32_thread_info *th; |
b80864fb | 905 | DWORD continue_status = DBG_CONTINUE; |
95954743 | 906 | ptid_t ptid; |
b80864fb DJ |
907 | |
908 | /* This handles the very limited set of resume packets that GDB can | |
909 | currently produce. */ | |
910 | ||
d7e15655 | 911 | if (n == 1 && resume_info[0].thread == minus_one_ptid) |
b80864fb | 912 | tid = -1; |
2bd7c093 | 913 | else if (n > 1) |
b80864fb DJ |
914 | tid = -1; |
915 | else | |
916 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
917 | the Windows resume code do the right thing for thread switching. */ | |
918 | tid = current_event.dwThreadId; | |
919 | ||
d7e15655 | 920 | if (resume_info[0].thread != minus_one_ptid) |
b80864fb | 921 | { |
ce7715e2 | 922 | sig = gdb_signal_from_host (resume_info[0].sig); |
bd99dc85 | 923 | step = resume_info[0].kind == resume_step; |
b80864fb DJ |
924 | } |
925 | else | |
926 | { | |
ce7715e2 | 927 | sig = GDB_SIGNAL_0; |
b80864fb DJ |
928 | step = 0; |
929 | } | |
930 | ||
a493e3e2 | 931 | if (sig != GDB_SIGNAL_0) |
b80864fb DJ |
932 | { |
933 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
934 | { | |
ce7715e2 PA |
935 | OUTMSG (("Cannot continue with signal %s here.\n", |
936 | gdb_signal_to_string (sig))); | |
b80864fb DJ |
937 | } |
938 | else if (sig == last_sig) | |
939 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
940 | else | |
ce7715e2 PA |
941 | OUTMSG (("Can only continue with received signal %s.\n", |
942 | gdb_signal_to_string (last_sig))); | |
b80864fb DJ |
943 | } |
944 | ||
a493e3e2 | 945 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
946 | |
947 | /* Get context for the currently selected thread. */ | |
95954743 PA |
948 | ptid = debug_event_ptid (¤t_event); |
949 | th = thread_rec (ptid, FALSE); | |
b80864fb DJ |
950 | if (th) |
951 | { | |
a2abc7de PA |
952 | win32_prepare_to_resume (th); |
953 | ||
b80864fb DJ |
954 | if (th->context.ContextFlags) |
955 | { | |
b80864fb DJ |
956 | /* Move register values from the inferior into the thread |
957 | context structure. */ | |
958 | regcache_invalidate (); | |
959 | ||
960 | if (step) | |
ed50f18f PA |
961 | { |
962 | if (the_low_target.single_step != NULL) | |
963 | (*the_low_target.single_step) (th); | |
964 | else | |
965 | error ("Single stepping is not supported " | |
966 | "in this configuration.\n"); | |
967 | } | |
34b34921 | 968 | |
9c6c8194 | 969 | win32_set_thread_context (th); |
b80864fb DJ |
970 | th->context.ContextFlags = 0; |
971 | } | |
972 | } | |
973 | ||
974 | /* Allow continuing with the same signal that interrupted us. | |
975 | Otherwise complain. */ | |
976 | ||
977 | child_continue (continue_status, tid); | |
978 | } | |
979 | ||
255e7678 DJ |
980 | static void |
981 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) | |
982 | { | |
983 | char buf[MAX_PATH + 1]; | |
984 | char buf2[MAX_PATH + 1]; | |
985 | ||
986 | #ifdef _WIN32_WCE | |
987 | WIN32_FIND_DATA w32_fd; | |
988 | WCHAR wname[MAX_PATH + 1]; | |
989 | mbstowcs (wname, name, MAX_PATH); | |
990 | HANDLE h = FindFirstFile (wname, &w32_fd); | |
991 | #else | |
992 | WIN32_FIND_DATAA w32_fd; | |
993 | HANDLE h = FindFirstFileA (name, &w32_fd); | |
994 | #endif | |
995 | ||
850a0f76 JB |
996 | /* The symbols in a dll are offset by 0x1000, which is the |
997 | offset from 0 of the first byte in an image - because | |
998 | of the file header and the section alignment. */ | |
999 | load_addr += 0x1000; | |
1000 | ||
255e7678 DJ |
1001 | if (h == INVALID_HANDLE_VALUE) |
1002 | strcpy (buf, name); | |
1003 | else | |
1004 | { | |
1005 | FindClose (h); | |
1006 | strcpy (buf, name); | |
1007 | #ifndef _WIN32_WCE | |
1008 | { | |
1009 | char cwd[MAX_PATH + 1]; | |
1010 | char *p; | |
1011 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) | |
1012 | { | |
1013 | p = strrchr (buf, '\\'); | |
1014 | if (p) | |
1015 | p[1] = '\0'; | |
1016 | SetCurrentDirectoryA (buf); | |
1017 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); | |
1018 | SetCurrentDirectoryA (cwd); | |
1019 | } | |
1020 | } | |
1021 | #endif | |
1022 | } | |
1023 | ||
cf6e3471 PA |
1024 | #ifndef _WIN32_WCE |
1025 | if (strcasecmp (buf, "ntdll.dll") == 0) | |
1026 | { | |
1027 | GetSystemDirectoryA (buf, sizeof (buf)); | |
1028 | strcat (buf, "\\ntdll.dll"); | |
1029 | } | |
1030 | #endif | |
1031 | ||
255e7678 | 1032 | #ifdef __CYGWIN__ |
81239425 | 1033 | cygwin_conv_path (CCP_WIN_A_TO_POSIX, buf, buf2, sizeof (buf2)); |
255e7678 DJ |
1034 | #else |
1035 | strcpy (buf2, buf); | |
1036 | #endif | |
1037 | ||
1038 | loaded_dll (buf2, load_addr); | |
1039 | } | |
1040 | ||
1041 | static char * | |
1042 | get_image_name (HANDLE h, void *address, int unicode) | |
1043 | { | |
1044 | static char buf[(2 * MAX_PATH) + 1]; | |
1045 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); | |
1046 | char *address_ptr; | |
1047 | int len = 0; | |
1048 | char b[2]; | |
e8f0053d | 1049 | SIZE_T done; |
255e7678 DJ |
1050 | |
1051 | /* Attempt to read the name of the dll that was detected. | |
1052 | This is documented to work only when actively debugging | |
1053 | a program. It will not work for attached processes. */ | |
1054 | if (address == NULL) | |
1055 | return NULL; | |
1056 | ||
1057 | #ifdef _WIN32_WCE | |
1058 | /* Windows CE reports the address of the image name, | |
1059 | instead of an address of a pointer into the image name. */ | |
1060 | address_ptr = address; | |
1061 | #else | |
1062 | /* See if we could read the address of a string, and that the | |
1063 | address isn't null. */ | |
1064 | if (!ReadProcessMemory (h, address, &address_ptr, | |
1065 | sizeof (address_ptr), &done) | |
1066 | || done != sizeof (address_ptr) | |
1067 | || !address_ptr) | |
1068 | return NULL; | |
1069 | #endif | |
1070 | ||
1071 | /* Find the length of the string */ | |
1072 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) | |
1073 | && (b[0] != 0 || b[size - 1] != 0) && done == size) | |
1074 | continue; | |
1075 | ||
1076 | if (!unicode) | |
1077 | ReadProcessMemory (h, address_ptr, buf, len, &done); | |
1078 | else | |
1079 | { | |
8d749320 | 1080 | WCHAR *unicode_address = XALLOCAVEC (WCHAR, len); |
255e7678 DJ |
1081 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), |
1082 | &done); | |
1083 | ||
1084 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); | |
1085 | } | |
1086 | ||
1087 | return buf; | |
1088 | } | |
1089 | ||
1090 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, | |
1091 | DWORD, LPDWORD); | |
1092 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, | |
1093 | LPMODULEINFO, DWORD); | |
1094 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, | |
1095 | LPSTR, DWORD); | |
1096 | ||
1097 | static winapi_EnumProcessModules win32_EnumProcessModules; | |
1098 | static winapi_GetModuleInformation win32_GetModuleInformation; | |
1099 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; | |
1100 | ||
1101 | static BOOL | |
1102 | load_psapi (void) | |
1103 | { | |
1104 | static int psapi_loaded = 0; | |
1105 | static HMODULE dll = NULL; | |
1106 | ||
1107 | if (!psapi_loaded) | |
1108 | { | |
1109 | psapi_loaded = 1; | |
1110 | dll = LoadLibrary (TEXT("psapi.dll")); | |
1111 | if (!dll) | |
1112 | return FALSE; | |
1113 | win32_EnumProcessModules = | |
1114 | GETPROCADDRESS (dll, EnumProcessModules); | |
1115 | win32_GetModuleInformation = | |
1116 | GETPROCADDRESS (dll, GetModuleInformation); | |
1117 | win32_GetModuleFileNameExA = | |
1118 | GETPROCADDRESS (dll, GetModuleFileNameExA); | |
1119 | } | |
1120 | ||
1121 | return (win32_EnumProcessModules != NULL | |
1122 | && win32_GetModuleInformation != NULL | |
1123 | && win32_GetModuleFileNameExA != NULL); | |
1124 | } | |
1125 | ||
379a5e2d | 1126 | #ifndef _WIN32_WCE |
649ebbca | 1127 | |
f25b3fc3 JB |
1128 | /* Iterate over all DLLs currently mapped by our inferior, and |
1129 | add them to our list of solibs. */ | |
379a5e2d JB |
1130 | |
1131 | static void | |
f25b3fc3 | 1132 | win32_add_all_dlls (void) |
379a5e2d | 1133 | { |
379a5e2d JB |
1134 | size_t i; |
1135 | HMODULE dh_buf[1]; | |
1136 | HMODULE *DllHandle = dh_buf; | |
1137 | DWORD cbNeeded; | |
1138 | BOOL ok; | |
1139 | ||
379a5e2d JB |
1140 | if (!load_psapi ()) |
1141 | return; | |
1142 | ||
1143 | cbNeeded = 0; | |
1144 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1145 | DllHandle, | |
1146 | sizeof (HMODULE), | |
1147 | &cbNeeded); | |
1148 | ||
1149 | if (!ok || !cbNeeded) | |
1150 | return; | |
1151 | ||
1152 | DllHandle = (HMODULE *) alloca (cbNeeded); | |
1153 | if (!DllHandle) | |
1154 | return; | |
1155 | ||
1156 | ok = (*win32_EnumProcessModules) (current_process_handle, | |
1157 | DllHandle, | |
1158 | cbNeeded, | |
1159 | &cbNeeded); | |
1160 | if (!ok) | |
1161 | return; | |
1162 | ||
f25b3fc3 | 1163 | for (i = 1; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) |
379a5e2d JB |
1164 | { |
1165 | MODULEINFO mi; | |
1166 | char dll_name[MAX_PATH]; | |
1167 | ||
1168 | if (!(*win32_GetModuleInformation) (current_process_handle, | |
1169 | DllHandle[i], | |
1170 | &mi, | |
1171 | sizeof (mi))) | |
1172 | continue; | |
1173 | if ((*win32_GetModuleFileNameExA) (current_process_handle, | |
1174 | DllHandle[i], | |
1175 | dll_name, | |
1176 | MAX_PATH) == 0) | |
1177 | continue; | |
850a0f76 | 1178 | win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) mi.lpBaseOfDll); |
379a5e2d JB |
1179 | } |
1180 | } | |
1181 | #endif | |
1182 | ||
255e7678 DJ |
1183 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); |
1184 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); | |
1185 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); | |
1186 | ||
d763de10 | 1187 | /* Handle a DLL load event. |
255e7678 | 1188 | |
d763de10 JB |
1189 | This function assumes that this event did not occur during inferior |
1190 | initialization, where their event info may be incomplete (see | |
1191 | do_initial_child_stuff and win32_add_all_dlls for more info on | |
1192 | how we handle DLL loading during that phase). */ | |
255e7678 DJ |
1193 | |
1194 | static void | |
1195 | handle_load_dll (void) | |
1196 | { | |
1197 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; | |
d763de10 | 1198 | char *dll_name; |
255e7678 | 1199 | |
d763de10 JB |
1200 | dll_name = get_image_name (current_process_handle, |
1201 | event->lpImageName, event->fUnicode); | |
255e7678 DJ |
1202 | if (!dll_name) |
1203 | return; | |
1204 | ||
850a0f76 | 1205 | win32_add_one_solib (dll_name, (CORE_ADDR) (uintptr_t) event->lpBaseOfDll); |
255e7678 DJ |
1206 | } |
1207 | ||
f25b3fc3 JB |
1208 | /* Handle a DLL unload event. |
1209 | ||
1210 | This function assumes that this event did not occur during inferior | |
1211 | initialization, where their event info may be incomplete (see | |
1212 | do_initial_child_stuff and win32_add_one_solib for more info | |
1213 | on how we handle DLL loading during that phase). */ | |
1214 | ||
255e7678 DJ |
1215 | static void |
1216 | handle_unload_dll (void) | |
1217 | { | |
1218 | CORE_ADDR load_addr = | |
e8f0053d | 1219 | (CORE_ADDR) (uintptr_t) current_event.u.UnloadDll.lpBaseOfDll; |
850a0f76 JB |
1220 | |
1221 | /* The symbols in a dll are offset by 0x1000, which is the | |
1222 | offset from 0 of the first byte in an image - because | |
1223 | of the file header and the section alignment. */ | |
255e7678 DJ |
1224 | load_addr += 0x1000; |
1225 | unloaded_dll (NULL, load_addr); | |
1226 | } | |
1227 | ||
34b34921 | 1228 | static void |
b80864fb DJ |
1229 | handle_exception (struct target_waitstatus *ourstatus) |
1230 | { | |
b80864fb DJ |
1231 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
1232 | ||
1233 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1234 | ||
b80864fb DJ |
1235 | switch (code) |
1236 | { | |
1237 | case EXCEPTION_ACCESS_VIOLATION: | |
1238 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
a493e3e2 | 1239 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
b80864fb DJ |
1240 | break; |
1241 | case STATUS_STACK_OVERFLOW: | |
1242 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
a493e3e2 | 1243 | ourstatus->value.sig = GDB_SIGNAL_SEGV; |
b80864fb DJ |
1244 | break; |
1245 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
1246 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
a493e3e2 | 1247 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1248 | break; |
1249 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
1250 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
a493e3e2 | 1251 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1252 | break; |
1253 | case STATUS_FLOAT_INEXACT_RESULT: | |
1254 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
a493e3e2 | 1255 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1256 | break; |
1257 | case STATUS_FLOAT_INVALID_OPERATION: | |
1258 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
a493e3e2 | 1259 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1260 | break; |
1261 | case STATUS_FLOAT_OVERFLOW: | |
1262 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
a493e3e2 | 1263 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1264 | break; |
1265 | case STATUS_FLOAT_STACK_CHECK: | |
1266 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
a493e3e2 | 1267 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1268 | break; |
1269 | case STATUS_FLOAT_UNDERFLOW: | |
1270 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
a493e3e2 | 1271 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1272 | break; |
1273 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
1274 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
a493e3e2 | 1275 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1276 | break; |
1277 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
1278 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
a493e3e2 | 1279 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1280 | break; |
1281 | case STATUS_INTEGER_OVERFLOW: | |
1282 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
a493e3e2 | 1283 | ourstatus->value.sig = GDB_SIGNAL_FPE; |
b80864fb DJ |
1284 | break; |
1285 | case EXCEPTION_BREAKPOINT: | |
1286 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
a493e3e2 | 1287 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
ed50f18f PA |
1288 | #ifdef _WIN32_WCE |
1289 | /* Remove the initial breakpoint. */ | |
1290 | check_breakpoints ((CORE_ADDR) (long) current_event | |
1b3f6016 | 1291 | .u.Exception.ExceptionRecord.ExceptionAddress); |
ed50f18f | 1292 | #endif |
b80864fb DJ |
1293 | break; |
1294 | case DBG_CONTROL_C: | |
1295 | OUTMSG2 (("DBG_CONTROL_C")); | |
a493e3e2 | 1296 | ourstatus->value.sig = GDB_SIGNAL_INT; |
b80864fb DJ |
1297 | break; |
1298 | case DBG_CONTROL_BREAK: | |
1299 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
a493e3e2 | 1300 | ourstatus->value.sig = GDB_SIGNAL_INT; |
b80864fb DJ |
1301 | break; |
1302 | case EXCEPTION_SINGLE_STEP: | |
1303 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
a493e3e2 | 1304 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1305 | break; |
1306 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
1307 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
a493e3e2 | 1308 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1309 | break; |
1310 | case EXCEPTION_PRIV_INSTRUCTION: | |
1311 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
a493e3e2 | 1312 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1313 | break; |
1314 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
1315 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
a493e3e2 | 1316 | ourstatus->value.sig = GDB_SIGNAL_ILL; |
b80864fb DJ |
1317 | break; |
1318 | default: | |
1319 | if (current_event.u.Exception.dwFirstChance) | |
34b34921 PA |
1320 | { |
1321 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
1322 | return; | |
1323 | } | |
dfe07582 CV |
1324 | OUTMSG2 (("gdbserver: unknown target exception 0x%08x at 0x%s", |
1325 | (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
1326 | phex_nz ((uintptr_t) current_event.u.Exception.ExceptionRecord. | |
1327 | ExceptionAddress, sizeof (uintptr_t)))); | |
a493e3e2 | 1328 | ourstatus->value.sig = GDB_SIGNAL_UNKNOWN; |
b80864fb DJ |
1329 | break; |
1330 | } | |
1331 | OUTMSG2 (("\n")); | |
1332 | last_sig = ourstatus->value.sig; | |
b80864fb DJ |
1333 | } |
1334 | ||
4d5d1aaa | 1335 | |
34b34921 | 1336 | static void |
9c80ecd6 | 1337 | suspend_one_thread (thread_info *thread) |
4d5d1aaa | 1338 | { |
6afd337d | 1339 | win32_thread_info *th = (win32_thread_info *) thread_target_data (thread); |
4d5d1aaa PA |
1340 | |
1341 | if (!th->suspended) | |
1342 | { | |
1343 | if (SuspendThread (th->h) == (DWORD) -1) | |
1344 | { | |
1345 | DWORD err = GetLastError (); | |
1346 | OUTMSG (("warning: SuspendThread failed in suspend_one_thread, " | |
1347 | "(error %d): %s\n", (int) err, strwinerror (err))); | |
1348 | } | |
1349 | else | |
1350 | th->suspended = 1; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | static void | |
1355 | fake_breakpoint_event (void) | |
b80864fb | 1356 | { |
4d5d1aaa | 1357 | OUTMSG2(("fake_breakpoint_event\n")); |
b80864fb | 1358 | |
4d5d1aaa PA |
1359 | faked_breakpoint = 1; |
1360 | ||
1361 | memset (¤t_event, 0, sizeof (current_event)); | |
1362 | current_event.dwThreadId = main_thread_id; | |
1363 | current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT; | |
1364 | current_event.u.Exception.ExceptionRecord.ExceptionCode | |
1365 | = EXCEPTION_BREAKPOINT; | |
1366 | ||
f0045347 | 1367 | for_each_thread (suspend_one_thread); |
4d5d1aaa PA |
1368 | } |
1369 | ||
b65d95c5 DJ |
1370 | #ifdef _WIN32_WCE |
1371 | static int | |
1372 | auto_delete_breakpoint (CORE_ADDR stop_pc) | |
1373 | { | |
1374 | return 1; | |
1375 | } | |
1376 | #endif | |
1377 | ||
4d5d1aaa PA |
1378 | /* Get the next event from the child. */ |
1379 | ||
1380 | static int | |
1381 | get_child_debug_event (struct target_waitstatus *ourstatus) | |
1382 | { | |
95954743 PA |
1383 | ptid_t ptid; |
1384 | ||
a493e3e2 | 1385 | last_sig = GDB_SIGNAL_0; |
b80864fb DJ |
1386 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
1387 | ||
4d5d1aaa PA |
1388 | /* Check if GDB sent us an interrupt request. */ |
1389 | check_remote_input_interrupt_request (); | |
1390 | ||
1391 | if (soft_interrupt_requested) | |
1392 | { | |
1393 | soft_interrupt_requested = 0; | |
1394 | fake_breakpoint_event (); | |
1395 | goto gotevent; | |
1396 | } | |
1397 | ||
d97903b2 PA |
1398 | #ifndef _WIN32_WCE |
1399 | attaching = 0; | |
1400 | #else | |
1401 | if (attaching) | |
1402 | { | |
1403 | /* WinCE doesn't set an initial breakpoint automatically. To | |
1b3f6016 PA |
1404 | stop the inferior, we flush all currently pending debug |
1405 | events -- the thread list and the dll list are always | |
1406 | reported immediatelly without delay, then, we suspend all | |
1407 | threads and pretend we saw a trap at the current PC of the | |
1408 | main thread. | |
1409 | ||
1410 | Contrary to desktop Windows, Windows CE *does* report the dll | |
1411 | names on LOAD_DLL_DEBUG_EVENTs resulting from a | |
1412 | DebugActiveProcess call. This limits the way we can detect | |
1413 | if all the dlls have already been reported. If we get a real | |
1414 | debug event before leaving attaching, the worst that will | |
1415 | happen is the user will see a spurious breakpoint. */ | |
d97903b2 PA |
1416 | |
1417 | current_event.dwDebugEventCode = 0; | |
1418 | if (!WaitForDebugEvent (¤t_event, 0)) | |
1b3f6016 PA |
1419 | { |
1420 | OUTMSG2(("no attach events left\n")); | |
1421 | fake_breakpoint_event (); | |
1422 | attaching = 0; | |
1423 | } | |
d97903b2 | 1424 | else |
1b3f6016 | 1425 | OUTMSG2(("got attach event\n")); |
d97903b2 PA |
1426 | } |
1427 | else | |
1428 | #endif | |
1429 | { | |
30baf67b | 1430 | /* Keep the wait time low enough for comfortable remote |
1b3f6016 PA |
1431 | interruption, but high enough so gdbserver doesn't become a |
1432 | bottleneck. */ | |
d97903b2 | 1433 | if (!WaitForDebugEvent (¤t_event, 250)) |
912cf4ba PA |
1434 | { |
1435 | DWORD e = GetLastError(); | |
1436 | ||
1437 | if (e == ERROR_PIPE_NOT_CONNECTED) | |
1438 | { | |
1439 | /* This will happen if the loader fails to succesfully | |
1440 | load the application, e.g., if the main executable | |
1441 | tries to pull in a non-existing export from a | |
1442 | DLL. */ | |
1443 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1444 | ourstatus->value.integer = 1; | |
1445 | return 1; | |
1446 | } | |
1447 | ||
1448 | return 0; | |
1449 | } | |
d97903b2 | 1450 | } |
4d5d1aaa PA |
1451 | |
1452 | gotevent: | |
b80864fb | 1453 | |
34b34921 | 1454 | switch (current_event.dwDebugEventCode) |
b80864fb DJ |
1455 | { |
1456 | case CREATE_THREAD_DEBUG_EVENT: | |
1457 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
dfe07582 | 1458 | "for pid=%u tid=%x)\n", |
b80864fb DJ |
1459 | (unsigned) current_event.dwProcessId, |
1460 | (unsigned) current_event.dwThreadId)); | |
1461 | ||
1462 | /* Record the existence of this thread. */ | |
95954743 PA |
1463 | child_add_thread (current_event.dwProcessId, |
1464 | current_event.dwThreadId, | |
711e434b PM |
1465 | current_event.u.CreateThread.hThread, |
1466 | current_event.u.CreateThread.lpThreadLocalBase); | |
b80864fb DJ |
1467 | break; |
1468 | ||
1469 | case EXIT_THREAD_DEBUG_EVENT: | |
1470 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
dfe07582 | 1471 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1472 | (unsigned) current_event.dwProcessId, |
1473 | (unsigned) current_event.dwThreadId)); | |
95954743 PA |
1474 | child_delete_thread (current_event.dwProcessId, |
1475 | current_event.dwThreadId); | |
aeeb81d1 | 1476 | |
9c80ecd6 | 1477 | current_thread = get_first_thread (); |
aeeb81d1 | 1478 | return 1; |
b80864fb DJ |
1479 | |
1480 | case CREATE_PROCESS_DEBUG_EVENT: | |
1481 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1482 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1483 | (unsigned) current_event.dwProcessId, |
1484 | (unsigned) current_event.dwThreadId)); | |
1485 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
1486 | ||
1487 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
1488 | main_thread_id = current_event.dwThreadId; | |
1489 | ||
b80864fb | 1490 | /* Add the main thread. */ |
95954743 PA |
1491 | child_add_thread (current_event.dwProcessId, |
1492 | main_thread_id, | |
711e434b PM |
1493 | current_event.u.CreateProcessInfo.hThread, |
1494 | current_event.u.CreateProcessInfo.lpThreadLocalBase); | |
b80864fb | 1495 | |
ed50f18f | 1496 | #ifdef _WIN32_WCE |
d97903b2 PA |
1497 | if (!attaching) |
1498 | { | |
1499 | /* Windows CE doesn't set the initial breakpoint | |
1500 | automatically like the desktop versions of Windows do. | |
1501 | We add it explicitly here. It will be removed as soon as | |
1502 | it is hit. */ | |
1503 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
1504 | .CreateProcessInfo.lpStartAddress, | |
b65d95c5 | 1505 | auto_delete_breakpoint); |
d97903b2 | 1506 | } |
ed50f18f | 1507 | #endif |
b80864fb DJ |
1508 | break; |
1509 | ||
1510 | case EXIT_PROCESS_DEBUG_EVENT: | |
1511 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
dfe07582 | 1512 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1513 | (unsigned) current_event.dwProcessId, |
1514 | (unsigned) current_event.dwThreadId)); | |
559e7e50 EZ |
1515 | { |
1516 | DWORD exit_status = current_event.u.ExitProcess.dwExitCode; | |
1517 | /* If the exit status looks like a fatal exception, but we | |
1518 | don't recognize the exception's code, make the original | |
1519 | exit status value available, to avoid losing information. */ | |
1520 | int exit_signal | |
1521 | = WIFSIGNALED (exit_status) ? WTERMSIG (exit_status) : -1; | |
1522 | if (exit_signal == -1) | |
1523 | { | |
1524 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1525 | ourstatus->value.integer = exit_status; | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1530 | ourstatus->value.sig = gdb_signal_from_host (exit_signal); | |
1531 | } | |
1532 | } | |
18aae699 | 1533 | child_continue (DBG_CONTINUE, -1); |
b80864fb | 1534 | CloseHandle (current_process_handle); |
9d606399 | 1535 | current_process_handle = NULL; |
b80864fb DJ |
1536 | break; |
1537 | ||
1538 | case LOAD_DLL_DEBUG_EVENT: | |
1539 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1540 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1541 | (unsigned) current_event.dwProcessId, |
1542 | (unsigned) current_event.dwThreadId)); | |
1543 | CloseHandle (current_event.u.LoadDll.hFile); | |
f25b3fc3 JB |
1544 | if (! child_initialization_done) |
1545 | break; | |
255e7678 | 1546 | handle_load_dll (); |
b80864fb DJ |
1547 | |
1548 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1549 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1550 | break; |
1551 | ||
1552 | case UNLOAD_DLL_DEBUG_EVENT: | |
1553 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
dfe07582 | 1554 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1555 | (unsigned) current_event.dwProcessId, |
1556 | (unsigned) current_event.dwThreadId)); | |
f25b3fc3 JB |
1557 | if (! child_initialization_done) |
1558 | break; | |
255e7678 DJ |
1559 | handle_unload_dll (); |
1560 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
a493e3e2 | 1561 | ourstatus->value.sig = GDB_SIGNAL_TRAP; |
b80864fb DJ |
1562 | break; |
1563 | ||
1564 | case EXCEPTION_DEBUG_EVENT: | |
1565 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
dfe07582 | 1566 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1567 | (unsigned) current_event.dwProcessId, |
1568 | (unsigned) current_event.dwThreadId)); | |
34b34921 | 1569 | handle_exception (ourstatus); |
b80864fb DJ |
1570 | break; |
1571 | ||
1572 | case OUTPUT_DEBUG_STRING_EVENT: | |
1573 | /* A message from the kernel (or Cygwin). */ | |
1574 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
dfe07582 | 1575 | "for pid=%u tid=%x\n", |
b80864fb DJ |
1576 | (unsigned) current_event.dwProcessId, |
1577 | (unsigned) current_event.dwThreadId)); | |
c0879059 | 1578 | handle_output_debug_string (); |
b80864fb DJ |
1579 | break; |
1580 | ||
1581 | default: | |
1582 | OUTMSG2 (("gdbserver: kernel event unknown " | |
dfe07582 | 1583 | "for pid=%u tid=%x code=%x\n", |
b80864fb DJ |
1584 | (unsigned) current_event.dwProcessId, |
1585 | (unsigned) current_event.dwThreadId, | |
dfe07582 | 1586 | (unsigned) current_event.dwDebugEventCode)); |
b80864fb DJ |
1587 | break; |
1588 | } | |
1589 | ||
aeeb81d1 | 1590 | ptid = debug_event_ptid (¤t_event); |
8dc7b443 | 1591 | current_thread = find_thread_ptid (ptid); |
4d5d1aaa | 1592 | return 1; |
b80864fb DJ |
1593 | } |
1594 | ||
1595 | /* Wait for the inferior process to change state. | |
1596 | STATUS will be filled in with a response code to send to GDB. | |
1597 | Returns the signal which caused the process to stop. */ | |
95954743 PA |
1598 | static ptid_t |
1599 | win32_wait (ptid_t ptid, struct target_waitstatus *ourstatus, int options) | |
b80864fb | 1600 | { |
442ea881 | 1601 | struct regcache *regcache; |
95954743 | 1602 | |
4210d83e PA |
1603 | if (cached_status.kind != TARGET_WAITKIND_IGNORE) |
1604 | { | |
1605 | /* The core always does a wait after creating the inferior, and | |
1606 | do_initial_child_stuff already ran the inferior to the | |
1607 | initial breakpoint (or an exit, if creating the process | |
1608 | fails). Report it now. */ | |
1609 | *ourstatus = cached_status; | |
1610 | cached_status.kind = TARGET_WAITKIND_IGNORE; | |
1611 | return debug_event_ptid (¤t_event); | |
1612 | } | |
1613 | ||
b80864fb DJ |
1614 | while (1) |
1615 | { | |
5b1c542e | 1616 | if (!get_child_debug_event (ourstatus)) |
4d5d1aaa | 1617 | continue; |
b80864fb | 1618 | |
5b1c542e | 1619 | switch (ourstatus->kind) |
b80864fb | 1620 | { |
34b34921 | 1621 | case TARGET_WAITKIND_EXITED: |
b80864fb | 1622 | OUTMSG2 (("Child exited with retcode = %x\n", |
5b1c542e | 1623 | ourstatus->value.integer)); |
5ac588cf | 1624 | win32_clear_inferiors (); |
f2907e49 | 1625 | return ptid_t (current_event.dwProcessId); |
34b34921 | 1626 | case TARGET_WAITKIND_STOPPED: |
559e7e50 | 1627 | case TARGET_WAITKIND_SIGNALLED: |
1b3f6016 | 1628 | case TARGET_WAITKIND_LOADED: |
f72f3e60 | 1629 | OUTMSG2 (("Child Stopped with signal = %d \n", |
10357975 | 1630 | ourstatus->value.sig)); |
b80864fb | 1631 | |
0bfdf32f | 1632 | regcache = get_thread_regcache (current_thread, 1); |
442ea881 | 1633 | child_fetch_inferior_registers (regcache, -1); |
95954743 | 1634 | return debug_event_ptid (¤t_event); |
1b3f6016 | 1635 | default: |
5b1c542e | 1636 | OUTMSG (("Ignoring unknown internal event, %d\n", ourstatus->kind)); |
1b3f6016 PA |
1637 | /* fall-through */ |
1638 | case TARGET_WAITKIND_SPURIOUS: | |
34b34921 PA |
1639 | /* do nothing, just continue */ |
1640 | child_continue (DBG_CONTINUE, -1); | |
1641 | break; | |
b80864fb | 1642 | } |
b80864fb DJ |
1643 | } |
1644 | } | |
1645 | ||
1646 | /* Fetch registers from the inferior process. | |
1647 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1648 | static void | |
442ea881 | 1649 | win32_fetch_inferior_registers (struct regcache *regcache, int regno) |
b80864fb | 1650 | { |
442ea881 | 1651 | child_fetch_inferior_registers (regcache, regno); |
b80864fb DJ |
1652 | } |
1653 | ||
1654 | /* Store registers to the inferior process. | |
1655 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1656 | static void | |
442ea881 | 1657 | win32_store_inferior_registers (struct regcache *regcache, int regno) |
b80864fb | 1658 | { |
442ea881 | 1659 | child_store_inferior_registers (regcache, regno); |
b80864fb DJ |
1660 | } |
1661 | ||
1662 | /* Read memory from the inferior process. This should generally be | |
1663 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1664 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1665 | static int | |
1666 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1667 | { | |
ed50f18f | 1668 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1669 | } |
1670 | ||
1671 | /* Write memory to the inferior process. This should generally be | |
1672 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1673 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1674 | Returns 0 on success and errno on failure. */ | |
1675 | static int | |
1676 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1677 | int len) | |
1678 | { | |
1679 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1680 | } | |
1681 | ||
7390519e PA |
1682 | /* Send an interrupt request to the inferior process. */ |
1683 | static void | |
1684 | win32_request_interrupt (void) | |
1685 | { | |
1686 | winapi_DebugBreakProcess DebugBreakProcess; | |
1687 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; | |
1688 | ||
1689 | #ifdef _WIN32_WCE | |
1690 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
1691 | #else | |
1692 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
1693 | #endif | |
1694 | ||
1695 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); | |
1696 | ||
1697 | if (GenerateConsoleCtrlEvent != NULL | |
1698 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) | |
1699 | return; | |
1700 | ||
1701 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is | |
1702 | not a process group id. | |
1703 | Fallback to XP/Vista 'DebugBreakProcess', which generates a | |
1704 | breakpoint exception in the interior process. */ | |
1705 | ||
1706 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); | |
1707 | ||
1708 | if (DebugBreakProcess != NULL | |
1709 | && DebugBreakProcess (current_process_handle)) | |
1710 | return; | |
1711 | ||
4d5d1aaa PA |
1712 | /* Last resort, suspend all threads manually. */ |
1713 | soft_interrupt_requested = 1; | |
7390519e PA |
1714 | } |
1715 | ||
59a016f0 PA |
1716 | #ifdef _WIN32_WCE |
1717 | int | |
1718 | win32_error_to_fileio_error (DWORD err) | |
1719 | { | |
1720 | switch (err) | |
1721 | { | |
1722 | case ERROR_BAD_PATHNAME: | |
1723 | case ERROR_FILE_NOT_FOUND: | |
1724 | case ERROR_INVALID_NAME: | |
1725 | case ERROR_PATH_NOT_FOUND: | |
1726 | return FILEIO_ENOENT; | |
1727 | case ERROR_CRC: | |
1728 | case ERROR_IO_DEVICE: | |
1729 | case ERROR_OPEN_FAILED: | |
1730 | return FILEIO_EIO; | |
1731 | case ERROR_INVALID_HANDLE: | |
1732 | return FILEIO_EBADF; | |
1733 | case ERROR_ACCESS_DENIED: | |
1734 | case ERROR_SHARING_VIOLATION: | |
1735 | return FILEIO_EACCES; | |
1736 | case ERROR_NOACCESS: | |
1737 | return FILEIO_EFAULT; | |
1738 | case ERROR_BUSY: | |
1739 | return FILEIO_EBUSY; | |
1740 | case ERROR_ALREADY_EXISTS: | |
1741 | case ERROR_FILE_EXISTS: | |
1742 | return FILEIO_EEXIST; | |
1743 | case ERROR_BAD_DEVICE: | |
1744 | return FILEIO_ENODEV; | |
1745 | case ERROR_DIRECTORY: | |
1746 | return FILEIO_ENOTDIR; | |
1747 | case ERROR_FILENAME_EXCED_RANGE: | |
1748 | case ERROR_INVALID_DATA: | |
1749 | case ERROR_INVALID_PARAMETER: | |
1750 | case ERROR_NEGATIVE_SEEK: | |
1751 | return FILEIO_EINVAL; | |
1752 | case ERROR_TOO_MANY_OPEN_FILES: | |
1753 | return FILEIO_EMFILE; | |
1754 | case ERROR_HANDLE_DISK_FULL: | |
1755 | case ERROR_DISK_FULL: | |
1756 | return FILEIO_ENOSPC; | |
1757 | case ERROR_WRITE_PROTECT: | |
1758 | return FILEIO_EROFS; | |
1759 | case ERROR_NOT_SUPPORTED: | |
1760 | return FILEIO_ENOSYS; | |
1761 | } | |
1762 | ||
1763 | return FILEIO_EUNKNOWN; | |
1764 | } | |
1765 | ||
1766 | static void | |
1767 | wince_hostio_last_error (char *buf) | |
1768 | { | |
1769 | DWORD winerr = GetLastError (); | |
1770 | int fileio_err = win32_error_to_fileio_error (winerr); | |
1771 | sprintf (buf, "F-1,%x", fileio_err); | |
1772 | } | |
1773 | #endif | |
1774 | ||
711e434b PM |
1775 | /* Write Windows OS Thread Information Block address. */ |
1776 | ||
1777 | static int | |
1778 | win32_get_tib_address (ptid_t ptid, CORE_ADDR *addr) | |
1779 | { | |
1780 | win32_thread_info *th; | |
1781 | th = thread_rec (ptid, 0); | |
1782 | if (th == NULL) | |
1783 | return 0; | |
1784 | if (addr != NULL) | |
1785 | *addr = th->thread_local_base; | |
1786 | return 1; | |
1787 | } | |
1788 | ||
fb78e89c AT |
1789 | /* Implementation of the target_ops method "sw_breakpoint_from_kind". */ |
1790 | ||
1791 | static const gdb_byte * | |
1792 | win32_sw_breakpoint_from_kind (int kind, int *size) | |
1793 | { | |
1794 | *size = the_low_target.breakpoint_len; | |
1795 | return the_low_target.breakpoint; | |
1796 | } | |
1797 | ||
b80864fb DJ |
1798 | static struct target_ops win32_target_ops = { |
1799 | win32_create_inferior, | |
ece66d65 | 1800 | NULL, /* post_create_inferior */ |
b80864fb DJ |
1801 | win32_attach, |
1802 | win32_kill, | |
1803 | win32_detach, | |
505106cd | 1804 | win32_mourn, |
444d6139 | 1805 | win32_join, |
b80864fb DJ |
1806 | win32_thread_alive, |
1807 | win32_resume, | |
1808 | win32_wait, | |
1809 | win32_fetch_inferior_registers, | |
1810 | win32_store_inferior_registers, | |
90d74c30 | 1811 | NULL, /* prepare_to_access_memory */ |
0146f85b | 1812 | NULL, /* done_accessing_memory */ |
b80864fb DJ |
1813 | win32_read_inferior_memory, |
1814 | win32_write_inferior_memory, | |
711e434b | 1815 | NULL, /* lookup_symbols */ |
7390519e | 1816 | win32_request_interrupt, |
711e434b | 1817 | NULL, /* read_auxv */ |
802e8e6d | 1818 | win32_supports_z_point_type, |
aa5ca48f DE |
1819 | win32_insert_point, |
1820 | win32_remove_point, | |
f5771b1d PA |
1821 | NULL, /* stopped_by_sw_breakpoint */ |
1822 | NULL, /* supports_stopped_by_sw_breakpoint */ | |
1823 | NULL, /* stopped_by_hw_breakpoint */ | |
1824 | NULL, /* supports_stopped_by_hw_breakpoint */ | |
70b90b91 | 1825 | target_can_do_hardware_single_step, |
aa5ca48f DE |
1826 | win32_stopped_by_watchpoint, |
1827 | win32_stopped_data_address, | |
711e434b PM |
1828 | NULL, /* read_offsets */ |
1829 | NULL, /* get_tls_address */ | |
59a016f0 PA |
1830 | #ifdef _WIN32_WCE |
1831 | wince_hostio_last_error, | |
1832 | #else | |
1833 | hostio_last_error_from_errno, | |
1834 | #endif | |
711e434b PM |
1835 | NULL, /* qxfer_osdata */ |
1836 | NULL, /* qxfer_siginfo */ | |
1837 | NULL, /* supports_non_stop */ | |
1838 | NULL, /* async */ | |
1839 | NULL, /* start_non_stop */ | |
1840 | NULL, /* supports_multi_process */ | |
89245bc0 DB |
1841 | NULL, /* supports_fork_events */ |
1842 | NULL, /* supports_vfork_events */ | |
94585166 | 1843 | NULL, /* supports_exec_events */ |
de0d863e | 1844 | NULL, /* handle_new_gdb_connection */ |
711e434b PM |
1845 | NULL, /* handle_monitor_command */ |
1846 | NULL, /* core_of_thread */ | |
881127c9 | 1847 | NULL, /* read_loadmap */ |
711e434b PM |
1848 | NULL, /* process_qsupported */ |
1849 | NULL, /* supports_tracepoints */ | |
1850 | NULL, /* read_pc */ | |
1851 | NULL, /* write_pc */ | |
1852 | NULL, /* thread_stopped */ | |
fb78e89c AT |
1853 | win32_get_tib_address, |
1854 | NULL, /* pause_all */ | |
1855 | NULL, /* unpause_all */ | |
1856 | NULL, /* stabilize_threads */ | |
1857 | NULL, /* install_fast_tracepoint_jump_pad */ | |
1858 | NULL, /* emit_ops */ | |
1859 | NULL, /* supports_disable_randomization */ | |
1860 | NULL, /* get_min_fast_tracepoint_insn_len */ | |
1861 | NULL, /* qxfer_libraries_svr4 */ | |
1862 | NULL, /* support_agent */ | |
fb78e89c AT |
1863 | NULL, /* enable_btrace */ |
1864 | NULL, /* disable_btrace */ | |
1865 | NULL, /* read_btrace */ | |
1866 | NULL, /* read_btrace_conf */ | |
1867 | NULL, /* supports_range_stepping */ | |
1868 | NULL, /* pid_to_exec_file */ | |
1869 | NULL, /* multifs_open */ | |
1870 | NULL, /* multifs_unlink */ | |
1871 | NULL, /* multifs_readlink */ | |
1872 | NULL, /* breakpoint_kind_from_pc */ | |
1873 | win32_sw_breakpoint_from_kind, | |
b80864fb DJ |
1874 | }; |
1875 | ||
1876 | /* Initialize the Win32 backend. */ | |
1877 | void | |
1878 | initialize_low (void) | |
1879 | { | |
1880 | set_target_ops (&win32_target_ops); | |
d05b4ac3 | 1881 | the_low_target.arch_setup (); |
b80864fb | 1882 | } |