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b80864fb | 1 | /* Low level interface to Windows debugging, for gdbserver. |
6aba47ca | 2 | Copyright (C) 2006, 2007 Free Software Foundation, Inc. |
b80864fb DJ |
3 | |
4 | Contributed by Leo Zayas. Based on "win32-nat.c" from GDB. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
21 | Boston, MA 02110-1301, USA. */ | |
22 | ||
23 | #include "server.h" | |
24 | #include "regcache.h" | |
25 | #include "gdb/signals.h" | |
ed50f18f PA |
26 | #include "mem-break.h" |
27 | #include "win32-low.h" | |
b80864fb DJ |
28 | |
29 | #include <windows.h> | |
ed50f18f | 30 | #include <winnt.h> |
b80864fb DJ |
31 | #include <imagehlp.h> |
32 | #include <psapi.h> | |
33 | #include <sys/param.h> | |
34 | #include <malloc.h> | |
35 | #include <process.h> | |
36 | ||
37 | #ifndef USE_WIN32API | |
38 | #include <sys/cygwin.h> | |
39 | #endif | |
40 | ||
41 | #define LOG 0 | |
42 | ||
43 | #define OUTMSG(X) do { printf X; fflush (stdout); } while (0) | |
44 | #if LOG | |
45 | #define OUTMSG2(X) do { printf X; fflush (stdout); } while (0) | |
46 | #else | |
ed50f18f PA |
47 | #define OUTMSG2(X) do ; while (0) |
48 | #endif | |
49 | ||
50 | #ifndef _T | |
51 | #define _T(x) TEXT (x) | |
52 | #endif | |
53 | ||
54 | #ifndef COUNTOF | |
55 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
b80864fb DJ |
56 | #endif |
57 | ||
b80864fb DJ |
58 | int using_threads = 1; |
59 | ||
60 | /* Globals. */ | |
61 | static HANDLE current_process_handle = NULL; | |
62 | static DWORD current_process_id = 0; | |
63 | static enum target_signal last_sig = TARGET_SIGNAL_0; | |
64 | ||
65 | /* The current debug event from WaitForDebugEvent. */ | |
66 | static DEBUG_EVENT current_event; | |
67 | ||
68 | static int debug_registers_changed = 0; | |
69 | static int debug_registers_used = 0; | |
ed50f18f PA |
70 | |
71 | #define NUM_REGS (the_low_target.num_regs) | |
b80864fb DJ |
72 | |
73 | typedef BOOL winapi_DebugActiveProcessStop (DWORD dwProcessId); | |
74 | typedef BOOL winapi_DebugSetProcessKillOnExit (BOOL KillOnExit); | |
75 | ||
ed50f18f PA |
76 | #ifndef CONTEXT_EXTENDED_REGISTERS |
77 | #define CONTEXT_EXTENDED_REGISTERS 0 | |
78 | #endif | |
79 | ||
80 | #ifndef CONTEXT_FLOATING_POINT | |
81 | #define CONTEXT_FLOATING_POINT 0 | |
82 | #endif | |
83 | ||
84 | #ifndef CONTEXT_DEBUG_REGISTERS | |
85 | #define CONTEXT_DEBUG_REGISTERS 0 | |
86 | #endif | |
87 | ||
b80864fb DJ |
88 | #define CONTEXT_DEBUGGER (CONTEXT_FULL | CONTEXT_FLOATING_POINT) |
89 | #define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_DEBUG_REGISTERS \ | |
90 | | CONTEXT_EXTENDED_REGISTERS | |
91 | ||
b80864fb DJ |
92 | static DWORD main_thread_id = 0; |
93 | ||
94 | /* Get the thread ID from the current selected inferior (the current | |
95 | thread). */ | |
96 | static DWORD | |
97 | current_inferior_tid (void) | |
98 | { | |
41093d81 | 99 | win32_thread_info *th = inferior_target_data (current_inferior); |
b80864fb DJ |
100 | return th->tid; |
101 | } | |
102 | ||
103 | /* Find a thread record given a thread id. If GET_CONTEXT is set then | |
104 | also retrieve the context for this thread. */ | |
41093d81 | 105 | static win32_thread_info * |
b80864fb DJ |
106 | thread_rec (DWORD id, int get_context) |
107 | { | |
108 | struct thread_info *thread; | |
41093d81 | 109 | win32_thread_info *th; |
b80864fb DJ |
110 | |
111 | thread = (struct thread_info *) find_inferior_id (&all_threads, id); | |
112 | if (thread == NULL) | |
113 | return NULL; | |
114 | ||
115 | th = inferior_target_data (thread); | |
116 | if (!th->suspend_count && get_context) | |
117 | { | |
118 | if (get_context > 0 && id != current_event.dwThreadId) | |
119 | th->suspend_count = SuspendThread (th->h) + 1; | |
120 | else if (get_context < 0) | |
121 | th->suspend_count = -1; | |
122 | ||
123 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
124 | ||
125 | GetThreadContext (th->h, &th->context); | |
126 | ||
127 | if (id == current_event.dwThreadId) | |
128 | { | |
129 | /* Copy dr values from that thread. */ | |
ed50f18f PA |
130 | if (the_low_target.store_debug_registers != NULL) |
131 | (*the_low_target.store_debug_registers) (th); | |
b80864fb DJ |
132 | } |
133 | } | |
134 | ||
135 | return th; | |
136 | } | |
137 | ||
138 | /* Add a thread to the thread list. */ | |
41093d81 | 139 | static win32_thread_info * |
b80864fb DJ |
140 | child_add_thread (DWORD tid, HANDLE h) |
141 | { | |
41093d81 | 142 | win32_thread_info *th; |
b80864fb DJ |
143 | |
144 | if ((th = thread_rec (tid, FALSE))) | |
145 | return th; | |
146 | ||
41093d81 | 147 | th = (win32_thread_info *) malloc (sizeof (*th)); |
b80864fb DJ |
148 | memset (th, 0, sizeof (*th)); |
149 | th->tid = tid; | |
150 | th->h = h; | |
151 | ||
152 | add_thread (tid, th, (unsigned int) tid); | |
153 | set_inferior_regcache_data ((struct thread_info *) | |
154 | find_inferior_id (&all_threads, tid), | |
155 | new_register_cache ()); | |
156 | ||
157 | /* Set the debug registers for the new thread if they are used. */ | |
ed50f18f PA |
158 | if (debug_registers_used |
159 | && the_low_target.load_debug_registers != NULL) | |
b80864fb DJ |
160 | { |
161 | /* Only change the value of the debug registers. */ | |
162 | th->context.ContextFlags = CONTEXT_DEBUGGER_DR; | |
163 | ||
164 | GetThreadContext (th->h, &th->context); | |
165 | ||
ed50f18f PA |
166 | (*the_low_target.load_debug_registers) (th); |
167 | ||
b80864fb DJ |
168 | SetThreadContext (th->h, &th->context); |
169 | th->context.ContextFlags = 0; | |
170 | } | |
171 | ||
172 | return th; | |
173 | } | |
174 | ||
175 | /* Delete a thread from the list of threads. */ | |
176 | static void | |
177 | delete_thread_info (struct inferior_list_entry *thread) | |
178 | { | |
41093d81 | 179 | win32_thread_info *th = inferior_target_data ((struct thread_info *) thread); |
b80864fb DJ |
180 | |
181 | remove_thread ((struct thread_info *) thread); | |
182 | CloseHandle (th->h); | |
183 | free (th); | |
184 | } | |
185 | ||
186 | /* Delete a thread from the list of threads. */ | |
187 | static void | |
188 | child_delete_thread (DWORD id) | |
189 | { | |
190 | struct inferior_list_entry *thread; | |
191 | ||
192 | /* If the last thread is exiting, just return. */ | |
193 | if (all_threads.head == all_threads.tail) | |
194 | return; | |
195 | ||
196 | thread = find_inferior_id (&all_threads, id); | |
197 | if (thread == NULL) | |
198 | return; | |
199 | ||
200 | delete_thread_info (thread); | |
201 | } | |
202 | ||
203 | /* Transfer memory from/to the debugged process. */ | |
204 | static int | |
205 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, | |
206 | int write, struct target_ops *target) | |
207 | { | |
208 | SIZE_T done; | |
209 | long addr = (long) memaddr; | |
210 | ||
211 | if (write) | |
212 | { | |
213 | WriteProcessMemory (current_process_handle, (LPVOID) addr, | |
214 | (LPCVOID) our, len, &done); | |
215 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); | |
216 | } | |
217 | else | |
218 | { | |
219 | ReadProcessMemory (current_process_handle, (LPCVOID) addr, (LPVOID) our, | |
220 | len, &done); | |
221 | } | |
222 | return done; | |
223 | } | |
224 | ||
225 | /* Generally, what has the program done? */ | |
226 | enum target_waitkind | |
227 | { | |
228 | /* The program has exited. The exit status is in value.integer. */ | |
229 | TARGET_WAITKIND_EXITED, | |
230 | ||
231 | /* The program has stopped with a signal. Which signal is in | |
232 | value.sig. */ | |
233 | TARGET_WAITKIND_STOPPED, | |
234 | ||
235 | /* The program is letting us know that it dynamically loaded something | |
236 | (e.g. it called load(2) on AIX). */ | |
237 | TARGET_WAITKIND_LOADED, | |
238 | ||
239 | /* The program has exec'ed a new executable file. The new file's | |
240 | pathname is pointed to by value.execd_pathname. */ | |
241 | ||
242 | TARGET_WAITKIND_EXECD, | |
243 | ||
244 | /* Nothing happened, but we stopped anyway. This perhaps should be handled | |
245 | within target_wait, but I'm not sure target_wait should be resuming the | |
246 | inferior. */ | |
247 | TARGET_WAITKIND_SPURIOUS, | |
248 | }; | |
249 | ||
250 | struct target_waitstatus | |
251 | { | |
252 | enum target_waitkind kind; | |
253 | ||
254 | /* Forked child pid, execd pathname, exit status or signal number. */ | |
255 | union | |
256 | { | |
257 | int integer; | |
258 | enum target_signal sig; | |
259 | int related_pid; | |
260 | char *execd_pathname; | |
261 | int syscall_id; | |
262 | } | |
263 | value; | |
264 | }; | |
265 | ||
ed50f18f PA |
266 | /* Return a pointer into a CONTEXT field indexed by gdb register number. |
267 | Return a pointer to an dummy register holding zero if there is no | |
268 | corresponding CONTEXT field for the given register number. */ | |
269 | char * | |
270 | regptr (CONTEXT* c, int r) | |
271 | { | |
272 | if (the_low_target.regmap[r] < 0) | |
273 | { | |
274 | static ULONG zero; | |
275 | /* Always force value to zero, in case the user tried to write | |
276 | to this register before. */ | |
277 | zero = 0; | |
278 | return (char *) &zero; | |
279 | } | |
280 | else | |
281 | return (char *) c + the_low_target.regmap[r]; | |
282 | } | |
b80864fb | 283 | |
b80864fb | 284 | |
ed50f18f | 285 | /* Clear out any old thread list and reinitialize it to a pristine |
b80864fb DJ |
286 | state. */ |
287 | static void | |
288 | child_init_thread_list (void) | |
289 | { | |
290 | for_each_inferior (&all_threads, delete_thread_info); | |
291 | } | |
292 | ||
293 | static void | |
294 | do_initial_child_stuff (DWORD pid) | |
295 | { | |
b80864fb DJ |
296 | last_sig = TARGET_SIGNAL_0; |
297 | ||
298 | debug_registers_changed = 0; | |
299 | debug_registers_used = 0; | |
ed50f18f | 300 | |
b80864fb DJ |
301 | memset (¤t_event, 0, sizeof (current_event)); |
302 | ||
303 | child_init_thread_list (); | |
ed50f18f PA |
304 | |
305 | if (the_low_target.initial_stuff != NULL) | |
306 | (*the_low_target.initial_stuff) (); | |
b80864fb DJ |
307 | } |
308 | ||
309 | /* Resume all artificially suspended threads if we are continuing | |
310 | execution. */ | |
311 | static int | |
312 | continue_one_thread (struct inferior_list_entry *this_thread, void *id_ptr) | |
313 | { | |
314 | struct thread_info *thread = (struct thread_info *) this_thread; | |
315 | int thread_id = * (int *) id_ptr; | |
41093d81 | 316 | win32_thread_info *th = inferior_target_data (thread); |
b80864fb DJ |
317 | int i; |
318 | ||
319 | if ((thread_id == -1 || thread_id == th->tid) | |
320 | && th->suspend_count) | |
321 | { | |
322 | for (i = 0; i < th->suspend_count; i++) | |
323 | (void) ResumeThread (th->h); | |
324 | th->suspend_count = 0; | |
325 | if (debug_registers_changed) | |
326 | { | |
327 | /* Only change the value of the debug registers. */ | |
328 | th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS; | |
ed50f18f PA |
329 | |
330 | if (the_low_target.load_debug_registers != NULL) | |
331 | the_low_target.load_debug_registers (th); | |
332 | ||
b80864fb DJ |
333 | SetThreadContext (th->h, &th->context); |
334 | th->context.ContextFlags = 0; | |
335 | } | |
336 | } | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | static BOOL | |
342 | child_continue (DWORD continue_status, int thread_id) | |
343 | { | |
344 | BOOL res; | |
345 | ||
346 | res = ContinueDebugEvent (current_event.dwProcessId, | |
347 | current_event.dwThreadId, continue_status); | |
348 | continue_status = 0; | |
349 | if (res) | |
350 | find_inferior (&all_threads, continue_one_thread, &thread_id); | |
351 | ||
352 | debug_registers_changed = 0; | |
353 | return res; | |
354 | } | |
355 | ||
b80864fb DJ |
356 | /* Fetch register(s) from the current thread context. */ |
357 | static void | |
358 | child_fetch_inferior_registers (int r) | |
359 | { | |
360 | int regno; | |
41093d81 | 361 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
362 | if (r == -1 || r == 0 || r > NUM_REGS) |
363 | child_fetch_inferior_registers (NUM_REGS); | |
364 | else | |
365 | for (regno = 0; regno < r; regno++) | |
ed50f18f | 366 | (*the_low_target.fetch_inferior_registers) (th, regno); |
b80864fb DJ |
367 | } |
368 | ||
369 | /* Get register from gdbserver regcache data. */ | |
370 | static void | |
41093d81 | 371 | do_child_store_inferior_registers (win32_thread_info *th, int r) |
b80864fb | 372 | { |
ed50f18f | 373 | collect_register (r, regptr (&th->context, r)); |
b80864fb DJ |
374 | } |
375 | ||
376 | /* Store a new register value into the current thread context. We don't | |
377 | change the program's context until later, when we resume it. */ | |
378 | static void | |
379 | child_store_inferior_registers (int r) | |
380 | { | |
381 | int regno; | |
41093d81 | 382 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
b80864fb DJ |
383 | if (r == -1 || r == 0 || r > NUM_REGS) |
384 | child_store_inferior_registers (NUM_REGS); | |
385 | else | |
386 | for (regno = 0; regno < r; regno++) | |
387 | do_child_store_inferior_registers (th, regno); | |
388 | } | |
389 | ||
ed50f18f PA |
390 | /* Map the Windows error number in ERROR to a locale-dependent error |
391 | message string and return a pointer to it. Typically, the values | |
392 | for ERROR come from GetLastError. | |
393 | ||
394 | The string pointed to shall not be modified by the application, | |
395 | but may be overwritten by a subsequent call to strwinerror | |
396 | ||
397 | The strwinerror function does not change the current setting | |
398 | of GetLastError. */ | |
399 | ||
400 | char * | |
401 | strwinerror (DWORD error) | |
402 | { | |
403 | static char buf[1024]; | |
404 | TCHAR *msgbuf; | |
405 | DWORD lasterr = GetLastError (); | |
406 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | |
407 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
408 | NULL, | |
409 | error, | |
410 | 0, /* Default language */ | |
411 | (LPVOID)&msgbuf, | |
412 | 0, | |
413 | NULL); | |
414 | if (chars != 0) | |
415 | { | |
416 | /* If there is an \r\n appended, zap it. */ | |
417 | if (chars >= 2 | |
418 | && msgbuf[chars - 2] == '\r' | |
419 | && msgbuf[chars - 1] == '\n') | |
420 | { | |
421 | chars -= 2; | |
422 | msgbuf[chars] = 0; | |
423 | } | |
424 | ||
425 | if (chars > ((COUNTOF (buf)) - 1)) | |
426 | { | |
427 | chars = COUNTOF (buf) - 1; | |
428 | msgbuf [chars] = 0; | |
429 | } | |
430 | ||
431 | #ifdef UNICODE | |
432 | wcstombs (buf, msgbuf, chars + 1); | |
433 | #else | |
434 | strncpy (buf, msgbuf, chars + 1); | |
435 | #endif | |
436 | LocalFree (msgbuf); | |
437 | } | |
438 | else | |
439 | sprintf (buf, "unknown win32 error (%ld)", error); | |
440 | ||
441 | SetLastError (lasterr); | |
442 | return buf; | |
443 | } | |
444 | ||
b80864fb DJ |
445 | /* Start a new process. |
446 | PROGRAM is a path to the program to execute. | |
447 | ARGS is a standard NULL-terminated array of arguments, | |
448 | to be passed to the inferior as ``argv''. | |
449 | Returns the new PID on success, -1 on failure. Registers the new | |
450 | process with the process list. */ | |
451 | static int | |
452 | win32_create_inferior (char *program, char **program_args) | |
453 | { | |
454 | #ifndef USE_WIN32API | |
455 | char real_path[MAXPATHLEN]; | |
456 | char *orig_path, *new_path, *path_ptr; | |
457 | #endif | |
b80864fb DJ |
458 | BOOL ret; |
459 | DWORD flags; | |
460 | char *args; | |
461 | int argslen; | |
462 | int argc; | |
ed50f18f PA |
463 | PROCESS_INFORMATION pi; |
464 | #ifndef __MINGW32CE__ | |
465 | STARTUPINFO si = { sizeof (STARTUPINFO) }; | |
466 | char *winenv = NULL; | |
467 | #else | |
468 | wchar_t *wargs, *wprogram; | |
469 | #endif | |
b80864fb DJ |
470 | |
471 | if (!program) | |
472 | error ("No executable specified, specify executable to debug.\n"); | |
473 | ||
b80864fb DJ |
474 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
475 | ||
476 | #ifndef USE_WIN32API | |
477 | orig_path = NULL; | |
478 | path_ptr = getenv ("PATH"); | |
479 | if (path_ptr) | |
480 | { | |
481 | orig_path = alloca (strlen (path_ptr) + 1); | |
482 | new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr)); | |
483 | strcpy (orig_path, path_ptr); | |
484 | cygwin_posix_to_win32_path_list (path_ptr, new_path); | |
485 | setenv ("PATH", new_path, 1); | |
486 | } | |
487 | cygwin_conv_to_win32_path (program, real_path); | |
488 | program = real_path; | |
489 | #endif | |
490 | ||
ed50f18f | 491 | argslen = 1; |
b80864fb DJ |
492 | for (argc = 1; program_args[argc]; argc++) |
493 | argslen += strlen (program_args[argc]) + 1; | |
494 | args = alloca (argslen); | |
ed50f18f | 495 | args[0] = '\0'; |
b80864fb DJ |
496 | for (argc = 1; program_args[argc]; argc++) |
497 | { | |
498 | /* FIXME: Can we do better about quoting? How does Cygwin | |
499 | handle this? */ | |
500 | strcat (args, " "); | |
501 | strcat (args, program_args[argc]); | |
502 | } | |
ed50f18f | 503 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
b80864fb | 504 | |
ed50f18f | 505 | #ifdef CREATE_NEW_PROCESS_GROUP |
b80864fb | 506 | flags |= CREATE_NEW_PROCESS_GROUP; |
ed50f18f | 507 | #endif |
b80864fb | 508 | |
ed50f18f PA |
509 | #ifdef __MINGW32CE__ |
510 | to_back_slashes (program); | |
511 | wargs = alloca (argslen * sizeof (wchar_t)); | |
512 | mbstowcs (wargs, args, argslen); | |
513 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); | |
514 | mbstowcs (wprogram, program, strlen (program) + 1); | |
515 | ret = CreateProcessW (wprogram, /* image name */ | |
516 | wargs, /* command line */ | |
517 | NULL, /* security, not supported */ | |
518 | NULL, /* thread, not supported */ | |
519 | FALSE, /* inherit handles, not supported */ | |
520 | flags, /* start flags */ | |
521 | NULL, /* environment, not supported */ | |
522 | NULL, /* current directory, not supported */ | |
523 | NULL, /* start info, not supported */ | |
524 | &pi); /* proc info */ | |
525 | #else | |
526 | ret = CreateProcess (program, /* image name */ | |
527 | args, /* command line */ | |
528 | NULL, /* security */ | |
b80864fb DJ |
529 | NULL, /* thread */ |
530 | TRUE, /* inherit handles */ | |
531 | flags, /* start flags */ | |
ed50f18f PA |
532 | winenv, /* environment */ |
533 | NULL, /* current directory */ | |
534 | &si, /* start info */ | |
535 | &pi); /* proc info */ | |
536 | #endif | |
b80864fb DJ |
537 | |
538 | #ifndef USE_WIN32API | |
539 | if (orig_path) | |
540 | setenv ("PATH", orig_path, 1); | |
541 | #endif | |
542 | ||
543 | if (!ret) | |
544 | { | |
ed50f18f PA |
545 | DWORD err = GetLastError (); |
546 | error ("Error creating process \"%s%s\", (error %d): %s\n", | |
547 | program, args, (int) err, strwinerror (err)); | |
b80864fb DJ |
548 | } |
549 | else | |
550 | { | |
551 | OUTMSG2 (("Process created: %s\n", (char *) args)); | |
552 | } | |
553 | ||
ed50f18f PA |
554 | #ifndef _WIN32_WCE |
555 | /* On Windows CE this handle can't be closed. The OS reuses | |
556 | it in the debug events, while the 9x/NT versions of Windows | |
557 | probably use a DuplicateHandle'd one. */ | |
b80864fb | 558 | CloseHandle (pi.hThread); |
ed50f18f | 559 | #endif |
b80864fb DJ |
560 | |
561 | current_process_handle = pi.hProcess; | |
562 | current_process_id = pi.dwProcessId; | |
563 | ||
564 | do_initial_child_stuff (current_process_id); | |
565 | ||
566 | return current_process_id; | |
567 | } | |
568 | ||
569 | /* Attach to a running process. | |
570 | PID is the process ID to attach to, specified by the user | |
571 | or a higher layer. */ | |
572 | static int | |
573 | win32_attach (unsigned long pid) | |
574 | { | |
575 | int res = 0; | |
b80864fb | 576 | winapi_DebugActiveProcessStop *DebugActiveProcessStop = NULL; |
b80864fb | 577 | |
ed50f18f PA |
578 | winapi_DebugSetProcessKillOnExit *DebugSetProcessKillOnExit = NULL; |
579 | #ifdef _WIN32_WCE | |
580 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
581 | #else | |
582 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
583 | #endif | |
584 | DebugActiveProcessStop = (winapi_DebugActiveProcessStop *) | |
585 | GetProcAddress (dll, _T("DebugActiveProcessStop")); | |
586 | DebugSetProcessKillOnExit = (winapi_DebugSetProcessKillOnExit *) | |
587 | GetProcAddress (dll, _T("DebugSetProcessKillOnExit")); | |
b80864fb DJ |
588 | |
589 | res = DebugActiveProcess (pid) ? 1 : 0; | |
590 | ||
591 | if (!res) | |
592 | error ("Attach to process failed."); | |
593 | ||
594 | if (DebugSetProcessKillOnExit != NULL) | |
595 | DebugSetProcessKillOnExit (FALSE); | |
596 | ||
597 | current_process_id = pid; | |
598 | current_process_handle = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); | |
599 | ||
600 | if (current_process_handle == NULL) | |
601 | { | |
602 | res = 0; | |
603 | if (DebugActiveProcessStop != NULL) | |
604 | DebugActiveProcessStop (current_process_id); | |
605 | } | |
606 | ||
607 | if (res) | |
608 | do_initial_child_stuff (pid); | |
609 | ||
b80864fb DJ |
610 | return res; |
611 | } | |
612 | ||
bce7165d PA |
613 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
614 | static void | |
615 | handle_output_debug_string (struct target_waitstatus *ourstatus) | |
616 | { | |
617 | #define READ_BUFFER_LEN 1024 | |
618 | CORE_ADDR addr; | |
619 | char s[READ_BUFFER_LEN + 1] = { 0 }; | |
620 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; | |
621 | ||
622 | if (nbytes == 0) | |
623 | return; | |
624 | ||
625 | if (nbytes > READ_BUFFER_LEN) | |
626 | nbytes = READ_BUFFER_LEN; | |
627 | ||
628 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; | |
629 | ||
630 | if (current_event.u.DebugString.fUnicode) | |
631 | { | |
632 | /* The event tells us how many bytes, not chars, even | |
633 | in Unicode. */ | |
634 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; | |
635 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) | |
636 | return; | |
637 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); | |
638 | } | |
639 | else | |
640 | { | |
641 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) | |
642 | return; | |
643 | } | |
644 | ||
645 | if (strncmp (s, "cYg", 3) != 0) | |
646 | monitor_output (s); | |
647 | #undef READ_BUFFER_LEN | |
648 | } | |
649 | ||
b80864fb DJ |
650 | /* Kill all inferiors. */ |
651 | static void | |
652 | win32_kill (void) | |
653 | { | |
ed50f18f PA |
654 | win32_thread_info *current_thread; |
655 | ||
9d606399 DJ |
656 | if (current_process_handle == NULL) |
657 | return; | |
658 | ||
b80864fb DJ |
659 | TerminateProcess (current_process_handle, 0); |
660 | for (;;) | |
661 | { | |
662 | if (!child_continue (DBG_CONTINUE, -1)) | |
663 | break; | |
664 | if (!WaitForDebugEvent (¤t_event, INFINITE)) | |
665 | break; | |
666 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) | |
667 | break; | |
bce7165d PA |
668 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
669 | { | |
670 | struct target_waitstatus our_status = { 0 }; | |
671 | handle_output_debug_string (&our_status); | |
672 | } | |
b80864fb | 673 | } |
ed50f18f PA |
674 | |
675 | CloseHandle (current_process_handle); | |
676 | ||
677 | current_thread = inferior_target_data (current_inferior); | |
678 | if (current_thread && current_thread->h) | |
679 | { | |
680 | /* This may fail in an attached process, so don't check. */ | |
681 | (void) CloseHandle (current_thread->h); | |
682 | } | |
b80864fb DJ |
683 | } |
684 | ||
685 | /* Detach from all inferiors. */ | |
686 | static void | |
687 | win32_detach (void) | |
688 | { | |
b80864fb DJ |
689 | winapi_DebugActiveProcessStop *DebugActiveProcessStop = NULL; |
690 | winapi_DebugSetProcessKillOnExit *DebugSetProcessKillOnExit = NULL; | |
ed50f18f PA |
691 | #ifdef _WIN32_WCE |
692 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); | |
693 | #else | |
694 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); | |
695 | #endif | |
696 | DebugActiveProcessStop = (winapi_DebugActiveProcessStop *) | |
697 | GetProcAddress (dll, _T("DebugActiveProcessStop")); | |
698 | DebugSetProcessKillOnExit = (winapi_DebugSetProcessKillOnExit *) | |
699 | GetProcAddress (dll, _T("DebugSetProcessKillOnExit")); | |
b80864fb DJ |
700 | |
701 | if (DebugSetProcessKillOnExit != NULL) | |
702 | DebugSetProcessKillOnExit (FALSE); | |
703 | ||
704 | if (DebugActiveProcessStop != NULL) | |
705 | DebugActiveProcessStop (current_process_id); | |
706 | else | |
707 | win32_kill (); | |
b80864fb DJ |
708 | } |
709 | ||
710 | /* Return 1 iff the thread with thread ID TID is alive. */ | |
711 | static int | |
712 | win32_thread_alive (unsigned long tid) | |
713 | { | |
714 | int res; | |
715 | ||
716 | /* Our thread list is reliable; don't bother to poll target | |
717 | threads. */ | |
718 | if (find_inferior_id (&all_threads, tid) != NULL) | |
719 | res = 1; | |
720 | else | |
721 | res = 0; | |
722 | return res; | |
723 | } | |
724 | ||
725 | /* Resume the inferior process. RESUME_INFO describes how we want | |
726 | to resume. */ | |
727 | static void | |
728 | win32_resume (struct thread_resume *resume_info) | |
729 | { | |
730 | DWORD tid; | |
731 | enum target_signal sig; | |
732 | int step; | |
41093d81 | 733 | win32_thread_info *th; |
b80864fb DJ |
734 | DWORD continue_status = DBG_CONTINUE; |
735 | ||
736 | /* This handles the very limited set of resume packets that GDB can | |
737 | currently produce. */ | |
738 | ||
739 | if (resume_info[0].thread == -1) | |
740 | tid = -1; | |
741 | else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped) | |
742 | tid = -1; | |
743 | else | |
744 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make | |
745 | the Windows resume code do the right thing for thread switching. */ | |
746 | tid = current_event.dwThreadId; | |
747 | ||
748 | if (resume_info[0].thread != -1) | |
749 | { | |
750 | sig = resume_info[0].sig; | |
751 | step = resume_info[0].step; | |
752 | } | |
753 | else | |
754 | { | |
755 | sig = 0; | |
756 | step = 0; | |
757 | } | |
758 | ||
759 | if (sig != TARGET_SIGNAL_0) | |
760 | { | |
761 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) | |
762 | { | |
763 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); | |
764 | } | |
765 | else if (sig == last_sig) | |
766 | continue_status = DBG_EXCEPTION_NOT_HANDLED; | |
767 | else | |
768 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); | |
769 | } | |
770 | ||
771 | last_sig = TARGET_SIGNAL_0; | |
772 | ||
773 | /* Get context for the currently selected thread. */ | |
774 | th = thread_rec (current_event.dwThreadId, FALSE); | |
775 | if (th) | |
776 | { | |
777 | if (th->context.ContextFlags) | |
778 | { | |
779 | if (debug_registers_changed) | |
ed50f18f PA |
780 | if (the_low_target.load_debug_registers != NULL) |
781 | (*the_low_target.load_debug_registers) (th); | |
b80864fb DJ |
782 | |
783 | /* Move register values from the inferior into the thread | |
784 | context structure. */ | |
785 | regcache_invalidate (); | |
786 | ||
787 | if (step) | |
ed50f18f PA |
788 | { |
789 | if (the_low_target.single_step != NULL) | |
790 | (*the_low_target.single_step) (th); | |
791 | else | |
792 | error ("Single stepping is not supported " | |
793 | "in this configuration.\n"); | |
794 | } | |
b80864fb DJ |
795 | SetThreadContext (th->h, &th->context); |
796 | th->context.ContextFlags = 0; | |
797 | } | |
798 | } | |
799 | ||
800 | /* Allow continuing with the same signal that interrupted us. | |
801 | Otherwise complain. */ | |
802 | ||
803 | child_continue (continue_status, tid); | |
804 | } | |
805 | ||
806 | static int | |
807 | handle_exception (struct target_waitstatus *ourstatus) | |
808 | { | |
41093d81 | 809 | win32_thread_info *th; |
b80864fb DJ |
810 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
811 | ||
812 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
813 | ||
814 | /* Record the context of the current thread. */ | |
815 | th = thread_rec (current_event.dwThreadId, -1); | |
816 | ||
817 | switch (code) | |
818 | { | |
819 | case EXCEPTION_ACCESS_VIOLATION: | |
820 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); | |
821 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
822 | break; | |
823 | case STATUS_STACK_OVERFLOW: | |
824 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); | |
825 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; | |
826 | break; | |
827 | case STATUS_FLOAT_DENORMAL_OPERAND: | |
828 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); | |
829 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
830 | break; | |
831 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: | |
832 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); | |
833 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
834 | break; | |
835 | case STATUS_FLOAT_INEXACT_RESULT: | |
836 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); | |
837 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
838 | break; | |
839 | case STATUS_FLOAT_INVALID_OPERATION: | |
840 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); | |
841 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
842 | break; | |
843 | case STATUS_FLOAT_OVERFLOW: | |
844 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); | |
845 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
846 | break; | |
847 | case STATUS_FLOAT_STACK_CHECK: | |
848 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); | |
849 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
850 | break; | |
851 | case STATUS_FLOAT_UNDERFLOW: | |
852 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); | |
853 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
854 | break; | |
855 | case STATUS_FLOAT_DIVIDE_BY_ZERO: | |
856 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); | |
857 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
858 | break; | |
859 | case STATUS_INTEGER_DIVIDE_BY_ZERO: | |
860 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); | |
861 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
862 | break; | |
863 | case STATUS_INTEGER_OVERFLOW: | |
864 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); | |
865 | ourstatus->value.sig = TARGET_SIGNAL_FPE; | |
866 | break; | |
867 | case EXCEPTION_BREAKPOINT: | |
868 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); | |
869 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
ed50f18f PA |
870 | #ifdef _WIN32_WCE |
871 | /* Remove the initial breakpoint. */ | |
872 | check_breakpoints ((CORE_ADDR) (long) current_event | |
873 | .u.Exception.ExceptionRecord.ExceptionAddress); | |
874 | #endif | |
b80864fb DJ |
875 | break; |
876 | case DBG_CONTROL_C: | |
877 | OUTMSG2 (("DBG_CONTROL_C")); | |
878 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
879 | break; | |
880 | case DBG_CONTROL_BREAK: | |
881 | OUTMSG2 (("DBG_CONTROL_BREAK")); | |
882 | ourstatus->value.sig = TARGET_SIGNAL_INT; | |
883 | break; | |
884 | case EXCEPTION_SINGLE_STEP: | |
885 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); | |
886 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; | |
887 | break; | |
888 | case EXCEPTION_ILLEGAL_INSTRUCTION: | |
889 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); | |
890 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
891 | break; | |
892 | case EXCEPTION_PRIV_INSTRUCTION: | |
893 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); | |
894 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
895 | break; | |
896 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: | |
897 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); | |
898 | ourstatus->value.sig = TARGET_SIGNAL_ILL; | |
899 | break; | |
900 | default: | |
901 | if (current_event.u.Exception.dwFirstChance) | |
902 | return 0; | |
903 | OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx", | |
904 | current_event.u.Exception.ExceptionRecord.ExceptionCode, | |
905 | (DWORD) current_event.u.Exception.ExceptionRecord. | |
906 | ExceptionAddress)); | |
907 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; | |
908 | break; | |
909 | } | |
910 | OUTMSG2 (("\n")); | |
911 | last_sig = ourstatus->value.sig; | |
912 | return 1; | |
913 | } | |
914 | ||
915 | /* Get the next event from the child. Return 1 if the event requires | |
916 | handling. */ | |
917 | static int | |
918 | get_child_debug_event (struct target_waitstatus *ourstatus) | |
919 | { | |
920 | BOOL debug_event; | |
921 | DWORD continue_status, event_code; | |
41093d81 PA |
922 | win32_thread_info *th = NULL; |
923 | static win32_thread_info dummy_thread_info; | |
b80864fb DJ |
924 | int retval = 0; |
925 | ||
926 | in: | |
927 | ||
928 | last_sig = TARGET_SIGNAL_0; | |
929 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; | |
930 | ||
931 | if (!(debug_event = WaitForDebugEvent (¤t_event, 1000))) | |
932 | goto out; | |
933 | ||
934 | current_inferior = | |
935 | (struct thread_info *) find_inferior_id (&all_threads, | |
936 | current_event.dwThreadId); | |
937 | ||
938 | continue_status = DBG_CONTINUE; | |
939 | event_code = current_event.dwDebugEventCode; | |
940 | ||
941 | switch (event_code) | |
942 | { | |
943 | case CREATE_THREAD_DEBUG_EVENT: | |
944 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " | |
945 | "for pid=%d tid=%x)\n", | |
946 | (unsigned) current_event.dwProcessId, | |
947 | (unsigned) current_event.dwThreadId)); | |
948 | ||
949 | /* Record the existence of this thread. */ | |
950 | th = child_add_thread (current_event.dwThreadId, | |
951 | current_event.u.CreateThread.hThread); | |
952 | ||
953 | retval = current_event.dwThreadId; | |
954 | break; | |
955 | ||
956 | case EXIT_THREAD_DEBUG_EVENT: | |
957 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " | |
958 | "for pid=%d tid=%x\n", | |
959 | (unsigned) current_event.dwProcessId, | |
960 | (unsigned) current_event.dwThreadId)); | |
961 | child_delete_thread (current_event.dwThreadId); | |
962 | th = &dummy_thread_info; | |
963 | break; | |
964 | ||
965 | case CREATE_PROCESS_DEBUG_EVENT: | |
966 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " | |
967 | "for pid=%d tid=%x\n", | |
968 | (unsigned) current_event.dwProcessId, | |
969 | (unsigned) current_event.dwThreadId)); | |
970 | CloseHandle (current_event.u.CreateProcessInfo.hFile); | |
971 | ||
972 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; | |
973 | main_thread_id = current_event.dwThreadId; | |
974 | ||
975 | ourstatus->kind = TARGET_WAITKIND_EXECD; | |
976 | ourstatus->value.execd_pathname = "Main executable"; | |
977 | ||
978 | /* Add the main thread. */ | |
979 | th = | |
980 | child_add_thread (main_thread_id, | |
981 | current_event.u.CreateProcessInfo.hThread); | |
982 | ||
983 | retval = ourstatus->value.related_pid = current_event.dwThreadId; | |
ed50f18f PA |
984 | #ifdef _WIN32_WCE |
985 | /* Windows CE doesn't set the initial breakpoint automatically | |
986 | like the desktop versions of Windows do. We add it explicitly | |
987 | here. It will be removed as soon as it is hit. */ | |
988 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u | |
989 | .CreateProcessInfo.lpStartAddress, | |
990 | delete_breakpoint_at); | |
991 | #endif | |
b80864fb DJ |
992 | break; |
993 | ||
994 | case EXIT_PROCESS_DEBUG_EVENT: | |
995 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " | |
996 | "for pid=%d tid=%x\n", | |
997 | (unsigned) current_event.dwProcessId, | |
998 | (unsigned) current_event.dwThreadId)); | |
999 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1000 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; | |
1001 | CloseHandle (current_process_handle); | |
9d606399 | 1002 | current_process_handle = NULL; |
b80864fb DJ |
1003 | retval = main_thread_id; |
1004 | break; | |
1005 | ||
1006 | case LOAD_DLL_DEBUG_EVENT: | |
1007 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " | |
1008 | "for pid=%d tid=%x\n", | |
1009 | (unsigned) current_event.dwProcessId, | |
1010 | (unsigned) current_event.dwThreadId)); | |
1011 | CloseHandle (current_event.u.LoadDll.hFile); | |
1012 | ||
1013 | ourstatus->kind = TARGET_WAITKIND_LOADED; | |
1014 | ourstatus->value.integer = 0; | |
1015 | retval = main_thread_id; | |
1016 | break; | |
1017 | ||
1018 | case UNLOAD_DLL_DEBUG_EVENT: | |
1019 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " | |
1020 | "for pid=%d tid=%x\n", | |
1021 | (unsigned) current_event.dwProcessId, | |
1022 | (unsigned) current_event.dwThreadId)); | |
1023 | break; | |
1024 | ||
1025 | case EXCEPTION_DEBUG_EVENT: | |
1026 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " | |
1027 | "for pid=%d tid=%x\n", | |
1028 | (unsigned) current_event.dwProcessId, | |
1029 | (unsigned) current_event.dwThreadId)); | |
1030 | retval = handle_exception (ourstatus); | |
1031 | break; | |
1032 | ||
1033 | case OUTPUT_DEBUG_STRING_EVENT: | |
1034 | /* A message from the kernel (or Cygwin). */ | |
1035 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " | |
1036 | "for pid=%d tid=%x\n", | |
1037 | (unsigned) current_event.dwProcessId, | |
1038 | (unsigned) current_event.dwThreadId)); | |
bce7165d | 1039 | handle_output_debug_string (ourstatus); |
b80864fb DJ |
1040 | break; |
1041 | ||
1042 | default: | |
1043 | OUTMSG2 (("gdbserver: kernel event unknown " | |
1044 | "for pid=%d tid=%x code=%ld\n", | |
1045 | (unsigned) current_event.dwProcessId, | |
1046 | (unsigned) current_event.dwThreadId, | |
1047 | current_event.dwDebugEventCode)); | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | current_inferior = | |
1052 | (struct thread_info *) find_inferior_id (&all_threads, | |
1053 | current_event.dwThreadId); | |
1054 | ||
1055 | if (!retval || (event_code != EXCEPTION_DEBUG_EVENT && event_code != EXIT_PROCESS_DEBUG_EVENT)) | |
1056 | { | |
1057 | child_continue (continue_status, -1); | |
1058 | goto in; | |
1059 | } | |
1060 | ||
1061 | if (th == NULL) | |
1062 | thread_rec (current_event.dwThreadId, TRUE); | |
1063 | ||
1064 | out: | |
1065 | return retval; | |
1066 | } | |
1067 | ||
1068 | /* Wait for the inferior process to change state. | |
1069 | STATUS will be filled in with a response code to send to GDB. | |
1070 | Returns the signal which caused the process to stop. */ | |
1071 | static unsigned char | |
1072 | win32_wait (char *status) | |
1073 | { | |
1074 | struct target_waitstatus our_status; | |
1075 | ||
1076 | *status = 'T'; | |
1077 | ||
1078 | while (1) | |
1079 | { | |
1080 | get_child_debug_event (&our_status); | |
1081 | ||
1082 | if (our_status.kind == TARGET_WAITKIND_EXITED) | |
1083 | { | |
1084 | OUTMSG2 (("Child exited with retcode = %x\n", | |
1085 | our_status.value.integer)); | |
1086 | ||
1087 | *status = 'W'; | |
1088 | ||
1089 | child_fetch_inferior_registers (-1); | |
1090 | ||
1091 | return our_status.value.integer; | |
1092 | } | |
1093 | else if (our_status.kind == TARGET_WAITKIND_STOPPED) | |
1094 | { | |
ed50f18f | 1095 | #ifndef __MINGW32CE__ |
b80864fb DJ |
1096 | OUTMSG2 (("Child Stopped with signal = %x \n", |
1097 | WSTOPSIG (our_status.value.sig))); | |
ed50f18f PA |
1098 | #else |
1099 | OUTMSG2 (("Child Stopped with signal = %x \n", | |
1100 | our_status.value.sig)); | |
1101 | #endif | |
b80864fb DJ |
1102 | |
1103 | *status = 'T'; | |
1104 | ||
1105 | child_fetch_inferior_registers (-1); | |
1106 | ||
1107 | return our_status.value.sig; | |
1108 | } | |
1109 | else | |
1110 | OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind)); | |
1111 | ||
1112 | { | |
1113 | struct thread_resume resume; | |
1114 | resume.thread = -1; | |
1115 | resume.step = 0; | |
1116 | resume.sig = 0; | |
1117 | resume.leave_stopped = 0; | |
1118 | win32_resume (&resume); | |
1119 | } | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | /* Fetch registers from the inferior process. | |
1124 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ | |
1125 | static void | |
1126 | win32_fetch_inferior_registers (int regno) | |
1127 | { | |
1128 | child_fetch_inferior_registers (regno); | |
1129 | } | |
1130 | ||
1131 | /* Store registers to the inferior process. | |
1132 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ | |
1133 | static void | |
1134 | win32_store_inferior_registers (int regno) | |
1135 | { | |
1136 | child_store_inferior_registers (regno); | |
1137 | } | |
1138 | ||
1139 | /* Read memory from the inferior process. This should generally be | |
1140 | called through read_inferior_memory, which handles breakpoint shadowing. | |
1141 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ | |
1142 | static int | |
1143 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) | |
1144 | { | |
ed50f18f | 1145 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
b80864fb DJ |
1146 | } |
1147 | ||
1148 | /* Write memory to the inferior process. This should generally be | |
1149 | called through write_inferior_memory, which handles breakpoint shadowing. | |
1150 | Write LEN bytes from the buffer at MYADDR to MEMADDR. | |
1151 | Returns 0 on success and errno on failure. */ | |
1152 | static int | |
1153 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, | |
1154 | int len) | |
1155 | { | |
1156 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; | |
1157 | } | |
1158 | ||
820f2bda PA |
1159 | static const char * |
1160 | win32_arch_string (void) | |
1161 | { | |
ed50f18f | 1162 | return the_low_target.arch_string; |
820f2bda PA |
1163 | } |
1164 | ||
b80864fb DJ |
1165 | static struct target_ops win32_target_ops = { |
1166 | win32_create_inferior, | |
1167 | win32_attach, | |
1168 | win32_kill, | |
1169 | win32_detach, | |
1170 | win32_thread_alive, | |
1171 | win32_resume, | |
1172 | win32_wait, | |
1173 | win32_fetch_inferior_registers, | |
1174 | win32_store_inferior_registers, | |
1175 | win32_read_inferior_memory, | |
1176 | win32_write_inferior_memory, | |
820f2bda PA |
1177 | NULL, |
1178 | NULL, | |
1179 | NULL, | |
1180 | NULL, | |
1181 | NULL, | |
1182 | NULL, | |
1183 | NULL, | |
1184 | NULL, | |
1185 | NULL, | |
1186 | win32_arch_string | |
b80864fb DJ |
1187 | }; |
1188 | ||
1189 | /* Initialize the Win32 backend. */ | |
1190 | void | |
1191 | initialize_low (void) | |
1192 | { | |
1193 | set_target_ops (&win32_target_ops); | |
ed50f18f PA |
1194 | if (the_low_target.breakpoint != NULL) |
1195 | set_breakpoint_data (the_low_target.breakpoint, | |
1196 | the_low_target.breakpoint_len); | |
b80864fb DJ |
1197 | init_registers (); |
1198 | } |