| 1 | /* Low level interface to Windows debugging, for gdbserver. |
| 2 | Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc. |
| 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "server.h" |
| 22 | #include "regcache.h" |
| 23 | #include "gdb/signals.h" |
| 24 | #include "mem-break.h" |
| 25 | #include "win32-low.h" |
| 26 | |
| 27 | #include <windows.h> |
| 28 | #include <winnt.h> |
| 29 | #include <imagehlp.h> |
| 30 | #include <tlhelp32.h> |
| 31 | #include <psapi.h> |
| 32 | #include <sys/param.h> |
| 33 | #include <malloc.h> |
| 34 | #include <process.h> |
| 35 | |
| 36 | #ifndef USE_WIN32API |
| 37 | #include <sys/cygwin.h> |
| 38 | #endif |
| 39 | |
| 40 | #define LOG 0 |
| 41 | |
| 42 | #define OUTMSG(X) do { printf X; fflush (stdout); } while (0) |
| 43 | #if LOG |
| 44 | #define OUTMSG2(X) do { printf X; fflush (stdout); } while (0) |
| 45 | #else |
| 46 | #define OUTMSG2(X) do ; while (0) |
| 47 | #endif |
| 48 | |
| 49 | #ifndef _T |
| 50 | #define _T(x) TEXT (x) |
| 51 | #endif |
| 52 | |
| 53 | #ifndef COUNTOF |
| 54 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) |
| 55 | #endif |
| 56 | |
| 57 | #ifdef _WIN32_WCE |
| 58 | # define GETPROCADDRESS(DLL, PROC) \ |
| 59 | ((winapi_ ## PROC) GetProcAddress (DLL, TEXT (#PROC))) |
| 60 | #else |
| 61 | # define GETPROCADDRESS(DLL, PROC) \ |
| 62 | ((winapi_ ## PROC) GetProcAddress (DLL, #PROC)) |
| 63 | #endif |
| 64 | |
| 65 | int using_threads = 1; |
| 66 | |
| 67 | /* Globals. */ |
| 68 | static int attaching = 0; |
| 69 | static HANDLE current_process_handle = NULL; |
| 70 | static DWORD current_process_id = 0; |
| 71 | static enum target_signal last_sig = TARGET_SIGNAL_0; |
| 72 | |
| 73 | /* The current debug event from WaitForDebugEvent. */ |
| 74 | static DEBUG_EVENT current_event; |
| 75 | |
| 76 | /* Non zero if an interrupt request is to be satisfied by suspending |
| 77 | all threads. */ |
| 78 | static int soft_interrupt_requested = 0; |
| 79 | |
| 80 | /* Non zero if the inferior is stopped in a simulated breakpoint done |
| 81 | by suspending all the threads. */ |
| 82 | static int faked_breakpoint = 0; |
| 83 | |
| 84 | #define NUM_REGS (the_low_target.num_regs) |
| 85 | |
| 86 | typedef BOOL WINAPI (*winapi_DebugActiveProcessStop) (DWORD dwProcessId); |
| 87 | typedef BOOL WINAPI (*winapi_DebugSetProcessKillOnExit) (BOOL KillOnExit); |
| 88 | typedef BOOL WINAPI (*winapi_DebugBreakProcess) (HANDLE); |
| 89 | typedef BOOL WINAPI (*winapi_GenerateConsoleCtrlEvent) (DWORD, DWORD); |
| 90 | |
| 91 | static DWORD main_thread_id = 0; |
| 92 | |
| 93 | static void win32_resume (struct thread_resume *resume_info); |
| 94 | |
| 95 | /* Get the thread ID from the current selected inferior (the current |
| 96 | thread). */ |
| 97 | static DWORD |
| 98 | current_inferior_tid (void) |
| 99 | { |
| 100 | win32_thread_info *th = inferior_target_data (current_inferior); |
| 101 | return th->tid; |
| 102 | } |
| 103 | |
| 104 | /* Get the thread context of the thread associated with TH. */ |
| 105 | |
| 106 | static void |
| 107 | win32_get_thread_context (win32_thread_info *th) |
| 108 | { |
| 109 | memset (&th->context, 0, sizeof (CONTEXT)); |
| 110 | (*the_low_target.get_thread_context) (th, ¤t_event); |
| 111 | #ifdef _WIN32_WCE |
| 112 | memcpy (&th->base_context, &th->context, sizeof (CONTEXT)); |
| 113 | #endif |
| 114 | } |
| 115 | |
| 116 | /* Set the thread context of the thread associated with TH. */ |
| 117 | |
| 118 | static void |
| 119 | win32_set_thread_context (win32_thread_info *th) |
| 120 | { |
| 121 | #ifdef _WIN32_WCE |
| 122 | /* Calling SuspendThread on a thread that is running kernel code |
| 123 | will report that the suspending was successful, but in fact, that |
| 124 | will often not be true. In those cases, the context returned by |
| 125 | GetThreadContext will not be correct by the time the thread |
| 126 | stops, hence we can't set that context back into the thread when |
| 127 | resuming - it will most likelly crash the inferior. |
| 128 | Unfortunately, there is no way to know when the thread will |
| 129 | really stop. To work around it, we'll only write the context |
| 130 | back to the thread when either the user or GDB explicitly change |
| 131 | it between stopping and resuming. */ |
| 132 | if (memcmp (&th->context, &th->base_context, sizeof (CONTEXT)) != 0) |
| 133 | #endif |
| 134 | (*the_low_target.set_thread_context) (th, ¤t_event); |
| 135 | } |
| 136 | |
| 137 | /* Find a thread record given a thread id. If GET_CONTEXT is set then |
| 138 | also retrieve the context for this thread. */ |
| 139 | static win32_thread_info * |
| 140 | thread_rec (DWORD id, int get_context) |
| 141 | { |
| 142 | struct thread_info *thread; |
| 143 | win32_thread_info *th; |
| 144 | |
| 145 | thread = (struct thread_info *) find_inferior_id (&all_threads, id); |
| 146 | if (thread == NULL) |
| 147 | return NULL; |
| 148 | |
| 149 | th = inferior_target_data (thread); |
| 150 | if (get_context && th->context.ContextFlags == 0) |
| 151 | { |
| 152 | if (!th->suspended) |
| 153 | { |
| 154 | if (SuspendThread (th->h) == (DWORD) -1) |
| 155 | { |
| 156 | DWORD err = GetLastError (); |
| 157 | OUTMSG (("warning: SuspendThread failed in thread_rec, " |
| 158 | "(error %d): %s\n", (int) err, strwinerror (err))); |
| 159 | } |
| 160 | else |
| 161 | th->suspended = 1; |
| 162 | } |
| 163 | |
| 164 | win32_get_thread_context (th); |
| 165 | } |
| 166 | |
| 167 | return th; |
| 168 | } |
| 169 | |
| 170 | /* Add a thread to the thread list. */ |
| 171 | static win32_thread_info * |
| 172 | child_add_thread (DWORD tid, HANDLE h) |
| 173 | { |
| 174 | win32_thread_info *th; |
| 175 | |
| 176 | if ((th = thread_rec (tid, FALSE))) |
| 177 | return th; |
| 178 | |
| 179 | th = calloc (1, sizeof (*th)); |
| 180 | th->tid = tid; |
| 181 | th->h = h; |
| 182 | |
| 183 | add_thread (tid, th, (unsigned int) tid); |
| 184 | set_inferior_regcache_data ((struct thread_info *) |
| 185 | find_inferior_id (&all_threads, tid), |
| 186 | new_register_cache ()); |
| 187 | |
| 188 | if (the_low_target.thread_added != NULL) |
| 189 | (*the_low_target.thread_added) (th); |
| 190 | |
| 191 | return th; |
| 192 | } |
| 193 | |
| 194 | /* Delete a thread from the list of threads. */ |
| 195 | static void |
| 196 | delete_thread_info (struct inferior_list_entry *thread) |
| 197 | { |
| 198 | win32_thread_info *th = inferior_target_data ((struct thread_info *) thread); |
| 199 | |
| 200 | remove_thread ((struct thread_info *) thread); |
| 201 | CloseHandle (th->h); |
| 202 | free (th); |
| 203 | } |
| 204 | |
| 205 | /* Delete a thread from the list of threads. */ |
| 206 | static void |
| 207 | child_delete_thread (DWORD id) |
| 208 | { |
| 209 | struct inferior_list_entry *thread; |
| 210 | |
| 211 | /* If the last thread is exiting, just return. */ |
| 212 | if (all_threads.head == all_threads.tail) |
| 213 | return; |
| 214 | |
| 215 | thread = find_inferior_id (&all_threads, id); |
| 216 | if (thread == NULL) |
| 217 | return; |
| 218 | |
| 219 | delete_thread_info (thread); |
| 220 | } |
| 221 | |
| 222 | /* Transfer memory from/to the debugged process. */ |
| 223 | static int |
| 224 | child_xfer_memory (CORE_ADDR memaddr, char *our, int len, |
| 225 | int write, struct target_ops *target) |
| 226 | { |
| 227 | SIZE_T done; |
| 228 | long addr = (long) memaddr; |
| 229 | |
| 230 | if (write) |
| 231 | { |
| 232 | WriteProcessMemory (current_process_handle, (LPVOID) addr, |
| 233 | (LPCVOID) our, len, &done); |
| 234 | FlushInstructionCache (current_process_handle, (LPCVOID) addr, len); |
| 235 | } |
| 236 | else |
| 237 | { |
| 238 | ReadProcessMemory (current_process_handle, (LPCVOID) addr, (LPVOID) our, |
| 239 | len, &done); |
| 240 | } |
| 241 | return done; |
| 242 | } |
| 243 | |
| 244 | /* Generally, what has the program done? */ |
| 245 | enum target_waitkind |
| 246 | { |
| 247 | /* The program has exited. The exit status is in value.integer. */ |
| 248 | TARGET_WAITKIND_EXITED, |
| 249 | |
| 250 | /* The program has stopped with a signal. Which signal is in |
| 251 | value.sig. */ |
| 252 | TARGET_WAITKIND_STOPPED, |
| 253 | |
| 254 | /* The program is letting us know that it dynamically loaded |
| 255 | or unloaded something. */ |
| 256 | TARGET_WAITKIND_LOADED, |
| 257 | |
| 258 | /* The program has exec'ed a new executable file. The new file's |
| 259 | pathname is pointed to by value.execd_pathname. */ |
| 260 | TARGET_WAITKIND_EXECD, |
| 261 | |
| 262 | /* Nothing interesting happened, but we stopped anyway. We take the |
| 263 | chance to check if GDB requested an interrupt. */ |
| 264 | TARGET_WAITKIND_SPURIOUS, |
| 265 | }; |
| 266 | |
| 267 | struct target_waitstatus |
| 268 | { |
| 269 | enum target_waitkind kind; |
| 270 | |
| 271 | /* Forked child pid, execd pathname, exit status or signal number. */ |
| 272 | union |
| 273 | { |
| 274 | int integer; |
| 275 | enum target_signal sig; |
| 276 | int related_pid; |
| 277 | char *execd_pathname; |
| 278 | int syscall_id; |
| 279 | } |
| 280 | value; |
| 281 | }; |
| 282 | |
| 283 | /* Clear out any old thread list and reinitialize it to a pristine |
| 284 | state. */ |
| 285 | static void |
| 286 | child_init_thread_list (void) |
| 287 | { |
| 288 | for_each_inferior (&all_threads, delete_thread_info); |
| 289 | } |
| 290 | |
| 291 | static void |
| 292 | do_initial_child_stuff (DWORD pid) |
| 293 | { |
| 294 | last_sig = TARGET_SIGNAL_0; |
| 295 | |
| 296 | memset (¤t_event, 0, sizeof (current_event)); |
| 297 | |
| 298 | child_init_thread_list (); |
| 299 | |
| 300 | if (the_low_target.initial_stuff != NULL) |
| 301 | (*the_low_target.initial_stuff) (); |
| 302 | } |
| 303 | |
| 304 | /* Resume all artificially suspended threads if we are continuing |
| 305 | execution. */ |
| 306 | static int |
| 307 | continue_one_thread (struct inferior_list_entry *this_thread, void *id_ptr) |
| 308 | { |
| 309 | struct thread_info *thread = (struct thread_info *) this_thread; |
| 310 | int thread_id = * (int *) id_ptr; |
| 311 | win32_thread_info *th = inferior_target_data (thread); |
| 312 | |
| 313 | if ((thread_id == -1 || thread_id == th->tid) |
| 314 | && th->suspended) |
| 315 | { |
| 316 | if (th->context.ContextFlags) |
| 317 | { |
| 318 | win32_set_thread_context (th); |
| 319 | th->context.ContextFlags = 0; |
| 320 | } |
| 321 | |
| 322 | if (ResumeThread (th->h) == (DWORD) -1) |
| 323 | { |
| 324 | DWORD err = GetLastError (); |
| 325 | OUTMSG (("warning: ResumeThread failed in continue_one_thread, " |
| 326 | "(error %d): %s\n", (int) err, strwinerror (err))); |
| 327 | } |
| 328 | th->suspended = 0; |
| 329 | } |
| 330 | |
| 331 | return 0; |
| 332 | } |
| 333 | |
| 334 | static BOOL |
| 335 | child_continue (DWORD continue_status, int thread_id) |
| 336 | { |
| 337 | /* The inferior will only continue after the ContinueDebugEvent |
| 338 | call. */ |
| 339 | find_inferior (&all_threads, continue_one_thread, &thread_id); |
| 340 | faked_breakpoint = 0; |
| 341 | |
| 342 | if (!ContinueDebugEvent (current_event.dwProcessId, |
| 343 | current_event.dwThreadId, |
| 344 | continue_status)) |
| 345 | return FALSE; |
| 346 | |
| 347 | return TRUE; |
| 348 | } |
| 349 | |
| 350 | /* Fetch register(s) from the current thread context. */ |
| 351 | static void |
| 352 | child_fetch_inferior_registers (int r) |
| 353 | { |
| 354 | int regno; |
| 355 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
| 356 | if (r == -1 || r == 0 || r > NUM_REGS) |
| 357 | child_fetch_inferior_registers (NUM_REGS); |
| 358 | else |
| 359 | for (regno = 0; regno < r; regno++) |
| 360 | (*the_low_target.fetch_inferior_register) (th, regno); |
| 361 | } |
| 362 | |
| 363 | /* Store a new register value into the current thread context. We don't |
| 364 | change the program's context until later, when we resume it. */ |
| 365 | static void |
| 366 | child_store_inferior_registers (int r) |
| 367 | { |
| 368 | int regno; |
| 369 | win32_thread_info *th = thread_rec (current_inferior_tid (), TRUE); |
| 370 | if (r == -1 || r == 0 || r > NUM_REGS) |
| 371 | child_store_inferior_registers (NUM_REGS); |
| 372 | else |
| 373 | for (regno = 0; regno < r; regno++) |
| 374 | (*the_low_target.store_inferior_register) (th, regno); |
| 375 | } |
| 376 | |
| 377 | /* Map the Windows error number in ERROR to a locale-dependent error |
| 378 | message string and return a pointer to it. Typically, the values |
| 379 | for ERROR come from GetLastError. |
| 380 | |
| 381 | The string pointed to shall not be modified by the application, |
| 382 | but may be overwritten by a subsequent call to strwinerror |
| 383 | |
| 384 | The strwinerror function does not change the current setting |
| 385 | of GetLastError. */ |
| 386 | |
| 387 | char * |
| 388 | strwinerror (DWORD error) |
| 389 | { |
| 390 | static char buf[1024]; |
| 391 | TCHAR *msgbuf; |
| 392 | DWORD lasterr = GetLastError (); |
| 393 | DWORD chars = FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM |
| 394 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, |
| 395 | NULL, |
| 396 | error, |
| 397 | 0, /* Default language */ |
| 398 | (LPVOID)&msgbuf, |
| 399 | 0, |
| 400 | NULL); |
| 401 | if (chars != 0) |
| 402 | { |
| 403 | /* If there is an \r\n appended, zap it. */ |
| 404 | if (chars >= 2 |
| 405 | && msgbuf[chars - 2] == '\r' |
| 406 | && msgbuf[chars - 1] == '\n') |
| 407 | { |
| 408 | chars -= 2; |
| 409 | msgbuf[chars] = 0; |
| 410 | } |
| 411 | |
| 412 | if (chars > ((COUNTOF (buf)) - 1)) |
| 413 | { |
| 414 | chars = COUNTOF (buf) - 1; |
| 415 | msgbuf [chars] = 0; |
| 416 | } |
| 417 | |
| 418 | #ifdef UNICODE |
| 419 | wcstombs (buf, msgbuf, chars + 1); |
| 420 | #else |
| 421 | strncpy (buf, msgbuf, chars + 1); |
| 422 | #endif |
| 423 | LocalFree (msgbuf); |
| 424 | } |
| 425 | else |
| 426 | sprintf (buf, "unknown win32 error (%ld)", error); |
| 427 | |
| 428 | SetLastError (lasterr); |
| 429 | return buf; |
| 430 | } |
| 431 | |
| 432 | static BOOL |
| 433 | create_process (const char *program, char *args, |
| 434 | DWORD flags, PROCESS_INFORMATION *pi) |
| 435 | { |
| 436 | BOOL ret; |
| 437 | |
| 438 | #ifdef _WIN32_WCE |
| 439 | wchar_t *p, *wprogram, *wargs; |
| 440 | size_t argslen; |
| 441 | |
| 442 | wprogram = alloca ((strlen (program) + 1) * sizeof (wchar_t)); |
| 443 | mbstowcs (wprogram, program, strlen (program) + 1); |
| 444 | |
| 445 | for (p = wprogram; *p; ++p) |
| 446 | if (L'/' == *p) |
| 447 | *p = L'\\'; |
| 448 | |
| 449 | argslen = strlen (args); |
| 450 | wargs = alloca ((argslen + 1) * sizeof (wchar_t)); |
| 451 | mbstowcs (wargs, args, argslen + 1); |
| 452 | |
| 453 | ret = CreateProcessW (wprogram, /* image name */ |
| 454 | wargs, /* command line */ |
| 455 | NULL, /* security, not supported */ |
| 456 | NULL, /* thread, not supported */ |
| 457 | FALSE, /* inherit handles, not supported */ |
| 458 | flags, /* start flags */ |
| 459 | NULL, /* environment, not supported */ |
| 460 | NULL, /* current directory, not supported */ |
| 461 | NULL, /* start info, not supported */ |
| 462 | pi); /* proc info */ |
| 463 | #else |
| 464 | STARTUPINFOA si = { sizeof (STARTUPINFOA) }; |
| 465 | |
| 466 | ret = CreateProcessA (program, /* image name */ |
| 467 | args, /* command line */ |
| 468 | NULL, /* security */ |
| 469 | NULL, /* thread */ |
| 470 | TRUE, /* inherit handles */ |
| 471 | flags, /* start flags */ |
| 472 | NULL, /* environment */ |
| 473 | NULL, /* current directory */ |
| 474 | &si, /* start info */ |
| 475 | pi); /* proc info */ |
| 476 | #endif |
| 477 | |
| 478 | return ret; |
| 479 | } |
| 480 | |
| 481 | /* Start a new process. |
| 482 | PROGRAM is a path to the program to execute. |
| 483 | ARGS is a standard NULL-terminated array of arguments, |
| 484 | to be passed to the inferior as ``argv''. |
| 485 | Returns the new PID on success, -1 on failure. Registers the new |
| 486 | process with the process list. */ |
| 487 | static int |
| 488 | win32_create_inferior (char *program, char **program_args) |
| 489 | { |
| 490 | #ifndef USE_WIN32API |
| 491 | char real_path[MAXPATHLEN]; |
| 492 | char *orig_path, *new_path, *path_ptr; |
| 493 | #endif |
| 494 | BOOL ret; |
| 495 | DWORD flags; |
| 496 | char *args; |
| 497 | int argslen; |
| 498 | int argc; |
| 499 | PROCESS_INFORMATION pi; |
| 500 | DWORD err; |
| 501 | |
| 502 | /* win32_wait needs to know we're not attaching. */ |
| 503 | attaching = 0; |
| 504 | |
| 505 | if (!program) |
| 506 | error ("No executable specified, specify executable to debug.\n"); |
| 507 | |
| 508 | flags = DEBUG_PROCESS | DEBUG_ONLY_THIS_PROCESS; |
| 509 | |
| 510 | #ifndef USE_WIN32API |
| 511 | orig_path = NULL; |
| 512 | path_ptr = getenv ("PATH"); |
| 513 | if (path_ptr) |
| 514 | { |
| 515 | orig_path = alloca (strlen (path_ptr) + 1); |
| 516 | new_path = alloca (cygwin_posix_to_win32_path_list_buf_size (path_ptr)); |
| 517 | strcpy (orig_path, path_ptr); |
| 518 | cygwin_posix_to_win32_path_list (path_ptr, new_path); |
| 519 | setenv ("PATH", new_path, 1); |
| 520 | } |
| 521 | cygwin_conv_to_win32_path (program, real_path); |
| 522 | program = real_path; |
| 523 | #endif |
| 524 | |
| 525 | argslen = 1; |
| 526 | for (argc = 1; program_args[argc]; argc++) |
| 527 | argslen += strlen (program_args[argc]) + 1; |
| 528 | args = alloca (argslen); |
| 529 | args[0] = '\0'; |
| 530 | for (argc = 1; program_args[argc]; argc++) |
| 531 | { |
| 532 | /* FIXME: Can we do better about quoting? How does Cygwin |
| 533 | handle this? */ |
| 534 | strcat (args, " "); |
| 535 | strcat (args, program_args[argc]); |
| 536 | } |
| 537 | OUTMSG2 (("Command line is \"%s\"\n", args)); |
| 538 | |
| 539 | #ifdef CREATE_NEW_PROCESS_GROUP |
| 540 | flags |= CREATE_NEW_PROCESS_GROUP; |
| 541 | #endif |
| 542 | |
| 543 | ret = create_process (program, args, flags, &pi); |
| 544 | err = GetLastError (); |
| 545 | if (!ret && err == ERROR_FILE_NOT_FOUND) |
| 546 | { |
| 547 | char *exename = alloca (strlen (program) + 5); |
| 548 | strcat (strcpy (exename, program), ".exe"); |
| 549 | ret = create_process (exename, args, flags, &pi); |
| 550 | err = GetLastError (); |
| 551 | } |
| 552 | |
| 553 | #ifndef USE_WIN32API |
| 554 | if (orig_path) |
| 555 | setenv ("PATH", orig_path, 1); |
| 556 | #endif |
| 557 | |
| 558 | if (!ret) |
| 559 | { |
| 560 | error ("Error creating process \"%s%s\", (error %d): %s\n", |
| 561 | program, args, (int) err, strwinerror (err)); |
| 562 | } |
| 563 | else |
| 564 | { |
| 565 | OUTMSG2 (("Process created: %s\n", (char *) args)); |
| 566 | } |
| 567 | |
| 568 | #ifndef _WIN32_WCE |
| 569 | /* On Windows CE this handle can't be closed. The OS reuses |
| 570 | it in the debug events, while the 9x/NT versions of Windows |
| 571 | probably use a DuplicateHandle'd one. */ |
| 572 | CloseHandle (pi.hThread); |
| 573 | #endif |
| 574 | |
| 575 | current_process_handle = pi.hProcess; |
| 576 | current_process_id = pi.dwProcessId; |
| 577 | |
| 578 | do_initial_child_stuff (current_process_id); |
| 579 | |
| 580 | return current_process_id; |
| 581 | } |
| 582 | |
| 583 | /* Attach to a running process. |
| 584 | PID is the process ID to attach to, specified by the user |
| 585 | or a higher layer. */ |
| 586 | static int |
| 587 | win32_attach (unsigned long pid) |
| 588 | { |
| 589 | HANDLE h; |
| 590 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
| 591 | DWORD err; |
| 592 | #ifdef _WIN32_WCE |
| 593 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); |
| 594 | #else |
| 595 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); |
| 596 | #endif |
| 597 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
| 598 | |
| 599 | h = OpenProcess (PROCESS_ALL_ACCESS, FALSE, pid); |
| 600 | if (h != NULL) |
| 601 | { |
| 602 | if (DebugActiveProcess (pid)) |
| 603 | { |
| 604 | if (DebugSetProcessKillOnExit != NULL) |
| 605 | DebugSetProcessKillOnExit (FALSE); |
| 606 | |
| 607 | /* win32_wait needs to know we're attaching. */ |
| 608 | attaching = 1; |
| 609 | current_process_handle = h; |
| 610 | current_process_id = pid; |
| 611 | do_initial_child_stuff (pid); |
| 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | CloseHandle (h); |
| 616 | } |
| 617 | |
| 618 | err = GetLastError (); |
| 619 | error ("Attach to process failed (error %d): %s\n", |
| 620 | (int) err, strwinerror (err)); |
| 621 | } |
| 622 | |
| 623 | /* Handle OUTPUT_DEBUG_STRING_EVENT from child process. */ |
| 624 | static void |
| 625 | handle_output_debug_string (struct target_waitstatus *ourstatus) |
| 626 | { |
| 627 | #define READ_BUFFER_LEN 1024 |
| 628 | CORE_ADDR addr; |
| 629 | char s[READ_BUFFER_LEN + 1] = { 0 }; |
| 630 | DWORD nbytes = current_event.u.DebugString.nDebugStringLength; |
| 631 | |
| 632 | if (nbytes == 0) |
| 633 | return; |
| 634 | |
| 635 | if (nbytes > READ_BUFFER_LEN) |
| 636 | nbytes = READ_BUFFER_LEN; |
| 637 | |
| 638 | addr = (CORE_ADDR) (size_t) current_event.u.DebugString.lpDebugStringData; |
| 639 | |
| 640 | if (current_event.u.DebugString.fUnicode) |
| 641 | { |
| 642 | /* The event tells us how many bytes, not chars, even |
| 643 | in Unicode. */ |
| 644 | WCHAR buffer[(READ_BUFFER_LEN + 1) / sizeof (WCHAR)] = { 0 }; |
| 645 | if (read_inferior_memory (addr, (unsigned char *) buffer, nbytes) != 0) |
| 646 | return; |
| 647 | wcstombs (s, buffer, (nbytes + 1) / sizeof (WCHAR)); |
| 648 | } |
| 649 | else |
| 650 | { |
| 651 | if (read_inferior_memory (addr, (unsigned char *) s, nbytes) != 0) |
| 652 | return; |
| 653 | } |
| 654 | |
| 655 | if (strncmp (s, "cYg", 3) != 0) |
| 656 | { |
| 657 | if (!server_waiting) |
| 658 | { |
| 659 | OUTMSG2(("%s", s)); |
| 660 | return; |
| 661 | } |
| 662 | |
| 663 | monitor_output (s); |
| 664 | } |
| 665 | #undef READ_BUFFER_LEN |
| 666 | } |
| 667 | |
| 668 | /* Kill all inferiors. */ |
| 669 | static void |
| 670 | win32_kill (void) |
| 671 | { |
| 672 | win32_thread_info *current_thread; |
| 673 | |
| 674 | if (current_process_handle == NULL) |
| 675 | return; |
| 676 | |
| 677 | TerminateProcess (current_process_handle, 0); |
| 678 | for (;;) |
| 679 | { |
| 680 | if (!child_continue (DBG_CONTINUE, -1)) |
| 681 | break; |
| 682 | if (!WaitForDebugEvent (¤t_event, INFINITE)) |
| 683 | break; |
| 684 | if (current_event.dwDebugEventCode == EXIT_PROCESS_DEBUG_EVENT) |
| 685 | break; |
| 686 | else if (current_event.dwDebugEventCode == OUTPUT_DEBUG_STRING_EVENT) |
| 687 | { |
| 688 | struct target_waitstatus our_status = { 0 }; |
| 689 | handle_output_debug_string (&our_status); |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | CloseHandle (current_process_handle); |
| 694 | |
| 695 | current_thread = inferior_target_data (current_inferior); |
| 696 | if (current_thread && current_thread->h) |
| 697 | { |
| 698 | /* This may fail in an attached process, so don't check. */ |
| 699 | (void) CloseHandle (current_thread->h); |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | /* Detach from all inferiors. */ |
| 704 | static int |
| 705 | win32_detach (void) |
| 706 | { |
| 707 | HANDLE h; |
| 708 | |
| 709 | winapi_DebugActiveProcessStop DebugActiveProcessStop = NULL; |
| 710 | winapi_DebugSetProcessKillOnExit DebugSetProcessKillOnExit = NULL; |
| 711 | #ifdef _WIN32_WCE |
| 712 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); |
| 713 | #else |
| 714 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); |
| 715 | #endif |
| 716 | DebugActiveProcessStop = GETPROCADDRESS (dll, DebugActiveProcessStop); |
| 717 | DebugSetProcessKillOnExit = GETPROCADDRESS (dll, DebugSetProcessKillOnExit); |
| 718 | |
| 719 | if (DebugSetProcessKillOnExit == NULL |
| 720 | || DebugActiveProcessStop == NULL) |
| 721 | return -1; |
| 722 | |
| 723 | /* We need a new handle, since DebugActiveProcessStop |
| 724 | closes all the ones that came through the events. */ |
| 725 | if ((h = OpenProcess (PROCESS_ALL_ACCESS, |
| 726 | FALSE, |
| 727 | current_process_id)) == NULL) |
| 728 | { |
| 729 | /* The process died. */ |
| 730 | return -1; |
| 731 | } |
| 732 | |
| 733 | { |
| 734 | struct thread_resume resume; |
| 735 | resume.thread = -1; |
| 736 | resume.step = 0; |
| 737 | resume.sig = 0; |
| 738 | resume.leave_stopped = 0; |
| 739 | win32_resume (&resume); |
| 740 | } |
| 741 | |
| 742 | if (!DebugActiveProcessStop (current_process_id)) |
| 743 | { |
| 744 | CloseHandle (h); |
| 745 | return -1; |
| 746 | } |
| 747 | DebugSetProcessKillOnExit (FALSE); |
| 748 | |
| 749 | current_process_handle = h; |
| 750 | return 0; |
| 751 | } |
| 752 | |
| 753 | /* Wait for inferiors to end. */ |
| 754 | static void |
| 755 | win32_join (void) |
| 756 | { |
| 757 | if (current_process_id == 0 |
| 758 | || current_process_handle == NULL) |
| 759 | return; |
| 760 | |
| 761 | WaitForSingleObject (current_process_handle, INFINITE); |
| 762 | CloseHandle (current_process_handle); |
| 763 | |
| 764 | current_process_handle = NULL; |
| 765 | current_process_id = 0; |
| 766 | } |
| 767 | |
| 768 | /* Return 1 iff the thread with thread ID TID is alive. */ |
| 769 | static int |
| 770 | win32_thread_alive (unsigned long tid) |
| 771 | { |
| 772 | int res; |
| 773 | |
| 774 | /* Our thread list is reliable; don't bother to poll target |
| 775 | threads. */ |
| 776 | if (find_inferior_id (&all_threads, tid) != NULL) |
| 777 | res = 1; |
| 778 | else |
| 779 | res = 0; |
| 780 | return res; |
| 781 | } |
| 782 | |
| 783 | /* Resume the inferior process. RESUME_INFO describes how we want |
| 784 | to resume. */ |
| 785 | static void |
| 786 | win32_resume (struct thread_resume *resume_info) |
| 787 | { |
| 788 | DWORD tid; |
| 789 | enum target_signal sig; |
| 790 | int step; |
| 791 | win32_thread_info *th; |
| 792 | DWORD continue_status = DBG_CONTINUE; |
| 793 | |
| 794 | /* This handles the very limited set of resume packets that GDB can |
| 795 | currently produce. */ |
| 796 | |
| 797 | if (resume_info[0].thread == -1) |
| 798 | tid = -1; |
| 799 | else if (resume_info[1].thread == -1 && !resume_info[1].leave_stopped) |
| 800 | tid = -1; |
| 801 | else |
| 802 | /* Yes, we're ignoring resume_info[0].thread. It'd be tricky to make |
| 803 | the Windows resume code do the right thing for thread switching. */ |
| 804 | tid = current_event.dwThreadId; |
| 805 | |
| 806 | if (resume_info[0].thread != -1) |
| 807 | { |
| 808 | sig = resume_info[0].sig; |
| 809 | step = resume_info[0].step; |
| 810 | } |
| 811 | else |
| 812 | { |
| 813 | sig = 0; |
| 814 | step = 0; |
| 815 | } |
| 816 | |
| 817 | if (sig != TARGET_SIGNAL_0) |
| 818 | { |
| 819 | if (current_event.dwDebugEventCode != EXCEPTION_DEBUG_EVENT) |
| 820 | { |
| 821 | OUTMSG (("Cannot continue with signal %d here.\n", sig)); |
| 822 | } |
| 823 | else if (sig == last_sig) |
| 824 | continue_status = DBG_EXCEPTION_NOT_HANDLED; |
| 825 | else |
| 826 | OUTMSG (("Can only continue with recieved signal %d.\n", last_sig)); |
| 827 | } |
| 828 | |
| 829 | last_sig = TARGET_SIGNAL_0; |
| 830 | |
| 831 | /* Get context for the currently selected thread. */ |
| 832 | th = thread_rec (current_event.dwThreadId, FALSE); |
| 833 | if (th) |
| 834 | { |
| 835 | if (th->context.ContextFlags) |
| 836 | { |
| 837 | /* Move register values from the inferior into the thread |
| 838 | context structure. */ |
| 839 | regcache_invalidate (); |
| 840 | |
| 841 | if (step) |
| 842 | { |
| 843 | if (the_low_target.single_step != NULL) |
| 844 | (*the_low_target.single_step) (th); |
| 845 | else |
| 846 | error ("Single stepping is not supported " |
| 847 | "in this configuration.\n"); |
| 848 | } |
| 849 | |
| 850 | win32_set_thread_context (th); |
| 851 | th->context.ContextFlags = 0; |
| 852 | } |
| 853 | } |
| 854 | |
| 855 | /* Allow continuing with the same signal that interrupted us. |
| 856 | Otherwise complain. */ |
| 857 | |
| 858 | child_continue (continue_status, tid); |
| 859 | } |
| 860 | |
| 861 | static void |
| 862 | win32_add_one_solib (const char *name, CORE_ADDR load_addr) |
| 863 | { |
| 864 | char buf[MAX_PATH + 1]; |
| 865 | char buf2[MAX_PATH + 1]; |
| 866 | |
| 867 | #ifdef _WIN32_WCE |
| 868 | WIN32_FIND_DATA w32_fd; |
| 869 | WCHAR wname[MAX_PATH + 1]; |
| 870 | mbstowcs (wname, name, MAX_PATH); |
| 871 | HANDLE h = FindFirstFile (wname, &w32_fd); |
| 872 | #else |
| 873 | WIN32_FIND_DATAA w32_fd; |
| 874 | HANDLE h = FindFirstFileA (name, &w32_fd); |
| 875 | #endif |
| 876 | |
| 877 | if (h == INVALID_HANDLE_VALUE) |
| 878 | strcpy (buf, name); |
| 879 | else |
| 880 | { |
| 881 | FindClose (h); |
| 882 | strcpy (buf, name); |
| 883 | #ifndef _WIN32_WCE |
| 884 | { |
| 885 | char cwd[MAX_PATH + 1]; |
| 886 | char *p; |
| 887 | if (GetCurrentDirectoryA (MAX_PATH + 1, cwd)) |
| 888 | { |
| 889 | p = strrchr (buf, '\\'); |
| 890 | if (p) |
| 891 | p[1] = '\0'; |
| 892 | SetCurrentDirectoryA (buf); |
| 893 | GetFullPathNameA (w32_fd.cFileName, MAX_PATH, buf, &p); |
| 894 | SetCurrentDirectoryA (cwd); |
| 895 | } |
| 896 | } |
| 897 | #endif |
| 898 | } |
| 899 | |
| 900 | #ifdef __CYGWIN__ |
| 901 | cygwin_conv_to_posix_path (buf, buf2); |
| 902 | #else |
| 903 | strcpy (buf2, buf); |
| 904 | #endif |
| 905 | |
| 906 | loaded_dll (buf2, load_addr); |
| 907 | } |
| 908 | |
| 909 | static char * |
| 910 | get_image_name (HANDLE h, void *address, int unicode) |
| 911 | { |
| 912 | static char buf[(2 * MAX_PATH) + 1]; |
| 913 | DWORD size = unicode ? sizeof (WCHAR) : sizeof (char); |
| 914 | char *address_ptr; |
| 915 | int len = 0; |
| 916 | char b[2]; |
| 917 | DWORD done; |
| 918 | |
| 919 | /* Attempt to read the name of the dll that was detected. |
| 920 | This is documented to work only when actively debugging |
| 921 | a program. It will not work for attached processes. */ |
| 922 | if (address == NULL) |
| 923 | return NULL; |
| 924 | |
| 925 | #ifdef _WIN32_WCE |
| 926 | /* Windows CE reports the address of the image name, |
| 927 | instead of an address of a pointer into the image name. */ |
| 928 | address_ptr = address; |
| 929 | #else |
| 930 | /* See if we could read the address of a string, and that the |
| 931 | address isn't null. */ |
| 932 | if (!ReadProcessMemory (h, address, &address_ptr, |
| 933 | sizeof (address_ptr), &done) |
| 934 | || done != sizeof (address_ptr) |
| 935 | || !address_ptr) |
| 936 | return NULL; |
| 937 | #endif |
| 938 | |
| 939 | /* Find the length of the string */ |
| 940 | while (ReadProcessMemory (h, address_ptr + len++ * size, &b, size, &done) |
| 941 | && (b[0] != 0 || b[size - 1] != 0) && done == size) |
| 942 | continue; |
| 943 | |
| 944 | if (!unicode) |
| 945 | ReadProcessMemory (h, address_ptr, buf, len, &done); |
| 946 | else |
| 947 | { |
| 948 | WCHAR *unicode_address = (WCHAR *) alloca (len * sizeof (WCHAR)); |
| 949 | ReadProcessMemory (h, address_ptr, unicode_address, len * sizeof (WCHAR), |
| 950 | &done); |
| 951 | |
| 952 | WideCharToMultiByte (CP_ACP, 0, unicode_address, len, buf, len, 0, 0); |
| 953 | } |
| 954 | |
| 955 | return buf; |
| 956 | } |
| 957 | |
| 958 | typedef BOOL (WINAPI *winapi_EnumProcessModules) (HANDLE, HMODULE *, |
| 959 | DWORD, LPDWORD); |
| 960 | typedef BOOL (WINAPI *winapi_GetModuleInformation) (HANDLE, HMODULE, |
| 961 | LPMODULEINFO, DWORD); |
| 962 | typedef DWORD (WINAPI *winapi_GetModuleFileNameExA) (HANDLE, HMODULE, |
| 963 | LPSTR, DWORD); |
| 964 | |
| 965 | static winapi_EnumProcessModules win32_EnumProcessModules; |
| 966 | static winapi_GetModuleInformation win32_GetModuleInformation; |
| 967 | static winapi_GetModuleFileNameExA win32_GetModuleFileNameExA; |
| 968 | |
| 969 | static BOOL |
| 970 | load_psapi (void) |
| 971 | { |
| 972 | static int psapi_loaded = 0; |
| 973 | static HMODULE dll = NULL; |
| 974 | |
| 975 | if (!psapi_loaded) |
| 976 | { |
| 977 | psapi_loaded = 1; |
| 978 | dll = LoadLibrary (TEXT("psapi.dll")); |
| 979 | if (!dll) |
| 980 | return FALSE; |
| 981 | win32_EnumProcessModules = |
| 982 | GETPROCADDRESS (dll, EnumProcessModules); |
| 983 | win32_GetModuleInformation = |
| 984 | GETPROCADDRESS (dll, GetModuleInformation); |
| 985 | win32_GetModuleFileNameExA = |
| 986 | GETPROCADDRESS (dll, GetModuleFileNameExA); |
| 987 | } |
| 988 | |
| 989 | return (win32_EnumProcessModules != NULL |
| 990 | && win32_GetModuleInformation != NULL |
| 991 | && win32_GetModuleFileNameExA != NULL); |
| 992 | } |
| 993 | |
| 994 | static int |
| 995 | psapi_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
| 996 | { |
| 997 | DWORD len; |
| 998 | MODULEINFO mi; |
| 999 | size_t i; |
| 1000 | HMODULE dh_buf[1]; |
| 1001 | HMODULE *DllHandle = dh_buf; |
| 1002 | DWORD cbNeeded; |
| 1003 | BOOL ok; |
| 1004 | |
| 1005 | if (!load_psapi ()) |
| 1006 | goto failed; |
| 1007 | |
| 1008 | cbNeeded = 0; |
| 1009 | ok = (*win32_EnumProcessModules) (current_process_handle, |
| 1010 | DllHandle, |
| 1011 | sizeof (HMODULE), |
| 1012 | &cbNeeded); |
| 1013 | |
| 1014 | if (!ok || !cbNeeded) |
| 1015 | goto failed; |
| 1016 | |
| 1017 | DllHandle = (HMODULE *) alloca (cbNeeded); |
| 1018 | if (!DllHandle) |
| 1019 | goto failed; |
| 1020 | |
| 1021 | ok = (*win32_EnumProcessModules) (current_process_handle, |
| 1022 | DllHandle, |
| 1023 | cbNeeded, |
| 1024 | &cbNeeded); |
| 1025 | if (!ok) |
| 1026 | goto failed; |
| 1027 | |
| 1028 | for (i = 0; i < ((size_t) cbNeeded / sizeof (HMODULE)); i++) |
| 1029 | { |
| 1030 | if (!(*win32_GetModuleInformation) (current_process_handle, |
| 1031 | DllHandle[i], |
| 1032 | &mi, |
| 1033 | sizeof (mi))) |
| 1034 | { |
| 1035 | DWORD err = GetLastError (); |
| 1036 | error ("Can't get module info: (error %d): %s\n", |
| 1037 | (int) err, strwinerror (err)); |
| 1038 | } |
| 1039 | |
| 1040 | if ((DWORD) (mi.lpBaseOfDll) == BaseAddress) |
| 1041 | { |
| 1042 | len = (*win32_GetModuleFileNameExA) (current_process_handle, |
| 1043 | DllHandle[i], |
| 1044 | dll_name_ret, |
| 1045 | MAX_PATH); |
| 1046 | if (len == 0) |
| 1047 | { |
| 1048 | DWORD err = GetLastError (); |
| 1049 | error ("Error getting dll name: (error %d): %s\n", |
| 1050 | (int) err, strwinerror (err)); |
| 1051 | } |
| 1052 | return 1; |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | failed: |
| 1057 | dll_name_ret[0] = '\0'; |
| 1058 | return 0; |
| 1059 | } |
| 1060 | |
| 1061 | typedef HANDLE (WINAPI *winapi_CreateToolhelp32Snapshot) (DWORD, DWORD); |
| 1062 | typedef BOOL (WINAPI *winapi_Module32First) (HANDLE, LPMODULEENTRY32); |
| 1063 | typedef BOOL (WINAPI *winapi_Module32Next) (HANDLE, LPMODULEENTRY32); |
| 1064 | |
| 1065 | static winapi_CreateToolhelp32Snapshot win32_CreateToolhelp32Snapshot; |
| 1066 | static winapi_Module32First win32_Module32First; |
| 1067 | static winapi_Module32Next win32_Module32Next; |
| 1068 | #ifdef _WIN32_WCE |
| 1069 | typedef BOOL (WINAPI *winapi_CloseToolhelp32Snapshot) (HANDLE); |
| 1070 | static winapi_CloseToolhelp32Snapshot win32_CloseToolhelp32Snapshot; |
| 1071 | #endif |
| 1072 | |
| 1073 | static BOOL |
| 1074 | load_toolhelp (void) |
| 1075 | { |
| 1076 | static int toolhelp_loaded = 0; |
| 1077 | static HMODULE dll = NULL; |
| 1078 | |
| 1079 | if (!toolhelp_loaded) |
| 1080 | { |
| 1081 | toolhelp_loaded = 1; |
| 1082 | #ifndef _WIN32_WCE |
| 1083 | dll = GetModuleHandle (_T("KERNEL32.DLL")); |
| 1084 | #else |
| 1085 | dll = LoadLibrary (L"TOOLHELP.DLL"); |
| 1086 | #endif |
| 1087 | if (!dll) |
| 1088 | return FALSE; |
| 1089 | |
| 1090 | win32_CreateToolhelp32Snapshot = |
| 1091 | GETPROCADDRESS (dll, CreateToolhelp32Snapshot); |
| 1092 | win32_Module32First = GETPROCADDRESS (dll, Module32First); |
| 1093 | win32_Module32Next = GETPROCADDRESS (dll, Module32Next); |
| 1094 | #ifdef _WIN32_WCE |
| 1095 | win32_CloseToolhelp32Snapshot = |
| 1096 | GETPROCADDRESS (dll, CloseToolhelp32Snapshot); |
| 1097 | #endif |
| 1098 | } |
| 1099 | |
| 1100 | return (win32_CreateToolhelp32Snapshot != NULL |
| 1101 | && win32_Module32First != NULL |
| 1102 | && win32_Module32Next != NULL |
| 1103 | #ifdef _WIN32_WCE |
| 1104 | && win32_CloseToolhelp32Snapshot != NULL |
| 1105 | #endif |
| 1106 | ); |
| 1107 | } |
| 1108 | |
| 1109 | static int |
| 1110 | toolhelp_get_dll_name (DWORD BaseAddress, char *dll_name_ret) |
| 1111 | { |
| 1112 | HANDLE snapshot_module; |
| 1113 | MODULEENTRY32 modEntry = { sizeof (MODULEENTRY32) }; |
| 1114 | int found = 0; |
| 1115 | |
| 1116 | if (!load_toolhelp ()) |
| 1117 | return 0; |
| 1118 | |
| 1119 | snapshot_module = win32_CreateToolhelp32Snapshot (TH32CS_SNAPMODULE, |
| 1120 | current_event.dwProcessId); |
| 1121 | if (snapshot_module == INVALID_HANDLE_VALUE) |
| 1122 | return 0; |
| 1123 | |
| 1124 | /* Ignore the first module, which is the exe. */ |
| 1125 | if (win32_Module32First (snapshot_module, &modEntry)) |
| 1126 | while (win32_Module32Next (snapshot_module, &modEntry)) |
| 1127 | if ((DWORD) modEntry.modBaseAddr == BaseAddress) |
| 1128 | { |
| 1129 | #ifdef UNICODE |
| 1130 | wcstombs (dll_name_ret, modEntry.szExePath, MAX_PATH + 1); |
| 1131 | #else |
| 1132 | strcpy (dll_name_ret, modEntry.szExePath); |
| 1133 | #endif |
| 1134 | found = 1; |
| 1135 | break; |
| 1136 | } |
| 1137 | |
| 1138 | #ifdef _WIN32_WCE |
| 1139 | win32_CloseToolhelp32Snapshot (snapshot_module); |
| 1140 | #else |
| 1141 | CloseHandle (snapshot_module); |
| 1142 | #endif |
| 1143 | return found; |
| 1144 | } |
| 1145 | |
| 1146 | static void |
| 1147 | handle_load_dll (void) |
| 1148 | { |
| 1149 | LOAD_DLL_DEBUG_INFO *event = ¤t_event.u.LoadDll; |
| 1150 | char dll_buf[MAX_PATH + 1]; |
| 1151 | char *dll_name = NULL; |
| 1152 | DWORD load_addr; |
| 1153 | |
| 1154 | dll_buf[0] = dll_buf[sizeof (dll_buf) - 1] = '\0'; |
| 1155 | |
| 1156 | /* Windows does not report the image name of the dlls in the debug |
| 1157 | event on attaches. We resort to iterating over the list of |
| 1158 | loaded dlls looking for a match by image base. */ |
| 1159 | if (!psapi_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf)) |
| 1160 | { |
| 1161 | if (!server_waiting) |
| 1162 | /* On some versions of Windows and Windows CE, we can't create |
| 1163 | toolhelp snapshots while the inferior is stopped in a |
| 1164 | LOAD_DLL_DEBUG_EVENT due to a dll load, but we can while |
| 1165 | Windows is reporting the already loaded dlls. */ |
| 1166 | toolhelp_get_dll_name ((DWORD) event->lpBaseOfDll, dll_buf); |
| 1167 | } |
| 1168 | |
| 1169 | dll_name = dll_buf; |
| 1170 | |
| 1171 | if (*dll_name == '\0') |
| 1172 | dll_name = get_image_name (current_process_handle, |
| 1173 | event->lpImageName, event->fUnicode); |
| 1174 | if (!dll_name) |
| 1175 | return; |
| 1176 | |
| 1177 | /* The symbols in a dll are offset by 0x1000, which is the |
| 1178 | the offset from 0 of the first byte in an image - because |
| 1179 | of the file header and the section alignment. */ |
| 1180 | |
| 1181 | load_addr = (DWORD) event->lpBaseOfDll + 0x1000; |
| 1182 | win32_add_one_solib (dll_name, load_addr); |
| 1183 | } |
| 1184 | |
| 1185 | static void |
| 1186 | handle_unload_dll (void) |
| 1187 | { |
| 1188 | CORE_ADDR load_addr = |
| 1189 | (CORE_ADDR) (DWORD) current_event.u.UnloadDll.lpBaseOfDll; |
| 1190 | load_addr += 0x1000; |
| 1191 | unloaded_dll (NULL, load_addr); |
| 1192 | } |
| 1193 | |
| 1194 | static void |
| 1195 | handle_exception (struct target_waitstatus *ourstatus) |
| 1196 | { |
| 1197 | DWORD code = current_event.u.Exception.ExceptionRecord.ExceptionCode; |
| 1198 | |
| 1199 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| 1200 | |
| 1201 | switch (code) |
| 1202 | { |
| 1203 | case EXCEPTION_ACCESS_VIOLATION: |
| 1204 | OUTMSG2 (("EXCEPTION_ACCESS_VIOLATION")); |
| 1205 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
| 1206 | break; |
| 1207 | case STATUS_STACK_OVERFLOW: |
| 1208 | OUTMSG2 (("STATUS_STACK_OVERFLOW")); |
| 1209 | ourstatus->value.sig = TARGET_SIGNAL_SEGV; |
| 1210 | break; |
| 1211 | case STATUS_FLOAT_DENORMAL_OPERAND: |
| 1212 | OUTMSG2 (("STATUS_FLOAT_DENORMAL_OPERAND")); |
| 1213 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1214 | break; |
| 1215 | case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: |
| 1216 | OUTMSG2 (("EXCEPTION_ARRAY_BOUNDS_EXCEEDED")); |
| 1217 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1218 | break; |
| 1219 | case STATUS_FLOAT_INEXACT_RESULT: |
| 1220 | OUTMSG2 (("STATUS_FLOAT_INEXACT_RESULT")); |
| 1221 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1222 | break; |
| 1223 | case STATUS_FLOAT_INVALID_OPERATION: |
| 1224 | OUTMSG2 (("STATUS_FLOAT_INVALID_OPERATION")); |
| 1225 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1226 | break; |
| 1227 | case STATUS_FLOAT_OVERFLOW: |
| 1228 | OUTMSG2 (("STATUS_FLOAT_OVERFLOW")); |
| 1229 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1230 | break; |
| 1231 | case STATUS_FLOAT_STACK_CHECK: |
| 1232 | OUTMSG2 (("STATUS_FLOAT_STACK_CHECK")); |
| 1233 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1234 | break; |
| 1235 | case STATUS_FLOAT_UNDERFLOW: |
| 1236 | OUTMSG2 (("STATUS_FLOAT_UNDERFLOW")); |
| 1237 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1238 | break; |
| 1239 | case STATUS_FLOAT_DIVIDE_BY_ZERO: |
| 1240 | OUTMSG2 (("STATUS_FLOAT_DIVIDE_BY_ZERO")); |
| 1241 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1242 | break; |
| 1243 | case STATUS_INTEGER_DIVIDE_BY_ZERO: |
| 1244 | OUTMSG2 (("STATUS_INTEGER_DIVIDE_BY_ZERO")); |
| 1245 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1246 | break; |
| 1247 | case STATUS_INTEGER_OVERFLOW: |
| 1248 | OUTMSG2 (("STATUS_INTEGER_OVERFLOW")); |
| 1249 | ourstatus->value.sig = TARGET_SIGNAL_FPE; |
| 1250 | break; |
| 1251 | case EXCEPTION_BREAKPOINT: |
| 1252 | OUTMSG2 (("EXCEPTION_BREAKPOINT")); |
| 1253 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
| 1254 | #ifdef _WIN32_WCE |
| 1255 | /* Remove the initial breakpoint. */ |
| 1256 | check_breakpoints ((CORE_ADDR) (long) current_event |
| 1257 | .u.Exception.ExceptionRecord.ExceptionAddress); |
| 1258 | #endif |
| 1259 | break; |
| 1260 | case DBG_CONTROL_C: |
| 1261 | OUTMSG2 (("DBG_CONTROL_C")); |
| 1262 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
| 1263 | break; |
| 1264 | case DBG_CONTROL_BREAK: |
| 1265 | OUTMSG2 (("DBG_CONTROL_BREAK")); |
| 1266 | ourstatus->value.sig = TARGET_SIGNAL_INT; |
| 1267 | break; |
| 1268 | case EXCEPTION_SINGLE_STEP: |
| 1269 | OUTMSG2 (("EXCEPTION_SINGLE_STEP")); |
| 1270 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
| 1271 | break; |
| 1272 | case EXCEPTION_ILLEGAL_INSTRUCTION: |
| 1273 | OUTMSG2 (("EXCEPTION_ILLEGAL_INSTRUCTION")); |
| 1274 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
| 1275 | break; |
| 1276 | case EXCEPTION_PRIV_INSTRUCTION: |
| 1277 | OUTMSG2 (("EXCEPTION_PRIV_INSTRUCTION")); |
| 1278 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
| 1279 | break; |
| 1280 | case EXCEPTION_NONCONTINUABLE_EXCEPTION: |
| 1281 | OUTMSG2 (("EXCEPTION_NONCONTINUABLE_EXCEPTION")); |
| 1282 | ourstatus->value.sig = TARGET_SIGNAL_ILL; |
| 1283 | break; |
| 1284 | default: |
| 1285 | if (current_event.u.Exception.dwFirstChance) |
| 1286 | { |
| 1287 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
| 1288 | return; |
| 1289 | } |
| 1290 | OUTMSG2 (("gdbserver: unknown target exception 0x%08lx at 0x%08lx", |
| 1291 | current_event.u.Exception.ExceptionRecord.ExceptionCode, |
| 1292 | (DWORD) current_event.u.Exception.ExceptionRecord. |
| 1293 | ExceptionAddress)); |
| 1294 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
| 1295 | break; |
| 1296 | } |
| 1297 | OUTMSG2 (("\n")); |
| 1298 | last_sig = ourstatus->value.sig; |
| 1299 | } |
| 1300 | |
| 1301 | |
| 1302 | static void |
| 1303 | suspend_one_thread (struct inferior_list_entry *entry) |
| 1304 | { |
| 1305 | struct thread_info *thread = (struct thread_info *) entry; |
| 1306 | win32_thread_info *th = inferior_target_data (thread); |
| 1307 | |
| 1308 | if (!th->suspended) |
| 1309 | { |
| 1310 | if (SuspendThread (th->h) == (DWORD) -1) |
| 1311 | { |
| 1312 | DWORD err = GetLastError (); |
| 1313 | OUTMSG (("warning: SuspendThread failed in suspend_one_thread, " |
| 1314 | "(error %d): %s\n", (int) err, strwinerror (err))); |
| 1315 | } |
| 1316 | else |
| 1317 | th->suspended = 1; |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | static void |
| 1322 | fake_breakpoint_event (void) |
| 1323 | { |
| 1324 | OUTMSG2(("fake_breakpoint_event\n")); |
| 1325 | |
| 1326 | faked_breakpoint = 1; |
| 1327 | |
| 1328 | memset (¤t_event, 0, sizeof (current_event)); |
| 1329 | current_event.dwThreadId = main_thread_id; |
| 1330 | current_event.dwDebugEventCode = EXCEPTION_DEBUG_EVENT; |
| 1331 | current_event.u.Exception.ExceptionRecord.ExceptionCode |
| 1332 | = EXCEPTION_BREAKPOINT; |
| 1333 | |
| 1334 | for_each_inferior (&all_threads, suspend_one_thread); |
| 1335 | } |
| 1336 | |
| 1337 | #ifdef _WIN32_WCE |
| 1338 | static int |
| 1339 | auto_delete_breakpoint (CORE_ADDR stop_pc) |
| 1340 | { |
| 1341 | return 1; |
| 1342 | } |
| 1343 | #endif |
| 1344 | |
| 1345 | /* Get the next event from the child. */ |
| 1346 | |
| 1347 | static int |
| 1348 | get_child_debug_event (struct target_waitstatus *ourstatus) |
| 1349 | { |
| 1350 | last_sig = TARGET_SIGNAL_0; |
| 1351 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
| 1352 | |
| 1353 | /* Check if GDB sent us an interrupt request. */ |
| 1354 | check_remote_input_interrupt_request (); |
| 1355 | |
| 1356 | if (soft_interrupt_requested) |
| 1357 | { |
| 1358 | soft_interrupt_requested = 0; |
| 1359 | fake_breakpoint_event (); |
| 1360 | goto gotevent; |
| 1361 | } |
| 1362 | |
| 1363 | #ifndef _WIN32_WCE |
| 1364 | attaching = 0; |
| 1365 | #else |
| 1366 | if (attaching) |
| 1367 | { |
| 1368 | /* WinCE doesn't set an initial breakpoint automatically. To |
| 1369 | stop the inferior, we flush all currently pending debug |
| 1370 | events -- the thread list and the dll list are always |
| 1371 | reported immediatelly without delay, then, we suspend all |
| 1372 | threads and pretend we saw a trap at the current PC of the |
| 1373 | main thread. |
| 1374 | |
| 1375 | Contrary to desktop Windows, Windows CE *does* report the dll |
| 1376 | names on LOAD_DLL_DEBUG_EVENTs resulting from a |
| 1377 | DebugActiveProcess call. This limits the way we can detect |
| 1378 | if all the dlls have already been reported. If we get a real |
| 1379 | debug event before leaving attaching, the worst that will |
| 1380 | happen is the user will see a spurious breakpoint. */ |
| 1381 | |
| 1382 | current_event.dwDebugEventCode = 0; |
| 1383 | if (!WaitForDebugEvent (¤t_event, 0)) |
| 1384 | { |
| 1385 | OUTMSG2(("no attach events left\n")); |
| 1386 | fake_breakpoint_event (); |
| 1387 | attaching = 0; |
| 1388 | } |
| 1389 | else |
| 1390 | OUTMSG2(("got attach event\n")); |
| 1391 | } |
| 1392 | else |
| 1393 | #endif |
| 1394 | { |
| 1395 | /* Keep the wait time low enough for confortable remote |
| 1396 | interruption, but high enough so gdbserver doesn't become a |
| 1397 | bottleneck. */ |
| 1398 | if (!WaitForDebugEvent (¤t_event, 250)) |
| 1399 | return 0; |
| 1400 | } |
| 1401 | |
| 1402 | gotevent: |
| 1403 | |
| 1404 | current_inferior = |
| 1405 | (struct thread_info *) find_inferior_id (&all_threads, |
| 1406 | current_event.dwThreadId); |
| 1407 | |
| 1408 | switch (current_event.dwDebugEventCode) |
| 1409 | { |
| 1410 | case CREATE_THREAD_DEBUG_EVENT: |
| 1411 | OUTMSG2 (("gdbserver: kernel event CREATE_THREAD_DEBUG_EVENT " |
| 1412 | "for pid=%d tid=%x)\n", |
| 1413 | (unsigned) current_event.dwProcessId, |
| 1414 | (unsigned) current_event.dwThreadId)); |
| 1415 | |
| 1416 | /* Record the existence of this thread. */ |
| 1417 | child_add_thread (current_event.dwThreadId, |
| 1418 | current_event.u.CreateThread.hThread); |
| 1419 | break; |
| 1420 | |
| 1421 | case EXIT_THREAD_DEBUG_EVENT: |
| 1422 | OUTMSG2 (("gdbserver: kernel event EXIT_THREAD_DEBUG_EVENT " |
| 1423 | "for pid=%d tid=%x\n", |
| 1424 | (unsigned) current_event.dwProcessId, |
| 1425 | (unsigned) current_event.dwThreadId)); |
| 1426 | child_delete_thread (current_event.dwThreadId); |
| 1427 | break; |
| 1428 | |
| 1429 | case CREATE_PROCESS_DEBUG_EVENT: |
| 1430 | OUTMSG2 (("gdbserver: kernel event CREATE_PROCESS_DEBUG_EVENT " |
| 1431 | "for pid=%d tid=%x\n", |
| 1432 | (unsigned) current_event.dwProcessId, |
| 1433 | (unsigned) current_event.dwThreadId)); |
| 1434 | CloseHandle (current_event.u.CreateProcessInfo.hFile); |
| 1435 | |
| 1436 | current_process_handle = current_event.u.CreateProcessInfo.hProcess; |
| 1437 | main_thread_id = current_event.dwThreadId; |
| 1438 | |
| 1439 | ourstatus->kind = TARGET_WAITKIND_EXECD; |
| 1440 | ourstatus->value.execd_pathname = "Main executable"; |
| 1441 | |
| 1442 | /* Add the main thread. */ |
| 1443 | child_add_thread (main_thread_id, |
| 1444 | current_event.u.CreateProcessInfo.hThread); |
| 1445 | |
| 1446 | ourstatus->value.related_pid = current_event.dwThreadId; |
| 1447 | #ifdef _WIN32_WCE |
| 1448 | if (!attaching) |
| 1449 | { |
| 1450 | /* Windows CE doesn't set the initial breakpoint |
| 1451 | automatically like the desktop versions of Windows do. |
| 1452 | We add it explicitly here. It will be removed as soon as |
| 1453 | it is hit. */ |
| 1454 | set_breakpoint_at ((CORE_ADDR) (long) current_event.u |
| 1455 | .CreateProcessInfo.lpStartAddress, |
| 1456 | auto_delete_breakpoint); |
| 1457 | } |
| 1458 | #endif |
| 1459 | break; |
| 1460 | |
| 1461 | case EXIT_PROCESS_DEBUG_EVENT: |
| 1462 | OUTMSG2 (("gdbserver: kernel event EXIT_PROCESS_DEBUG_EVENT " |
| 1463 | "for pid=%d tid=%x\n", |
| 1464 | (unsigned) current_event.dwProcessId, |
| 1465 | (unsigned) current_event.dwThreadId)); |
| 1466 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
| 1467 | ourstatus->value.integer = current_event.u.ExitProcess.dwExitCode; |
| 1468 | CloseHandle (current_process_handle); |
| 1469 | current_process_handle = NULL; |
| 1470 | break; |
| 1471 | |
| 1472 | case LOAD_DLL_DEBUG_EVENT: |
| 1473 | OUTMSG2 (("gdbserver: kernel event LOAD_DLL_DEBUG_EVENT " |
| 1474 | "for pid=%d tid=%x\n", |
| 1475 | (unsigned) current_event.dwProcessId, |
| 1476 | (unsigned) current_event.dwThreadId)); |
| 1477 | CloseHandle (current_event.u.LoadDll.hFile); |
| 1478 | handle_load_dll (); |
| 1479 | |
| 1480 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
| 1481 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
| 1482 | break; |
| 1483 | |
| 1484 | case UNLOAD_DLL_DEBUG_EVENT: |
| 1485 | OUTMSG2 (("gdbserver: kernel event UNLOAD_DLL_DEBUG_EVENT " |
| 1486 | "for pid=%d tid=%x\n", |
| 1487 | (unsigned) current_event.dwProcessId, |
| 1488 | (unsigned) current_event.dwThreadId)); |
| 1489 | handle_unload_dll (); |
| 1490 | ourstatus->kind = TARGET_WAITKIND_LOADED; |
| 1491 | ourstatus->value.sig = TARGET_SIGNAL_TRAP; |
| 1492 | break; |
| 1493 | |
| 1494 | case EXCEPTION_DEBUG_EVENT: |
| 1495 | OUTMSG2 (("gdbserver: kernel event EXCEPTION_DEBUG_EVENT " |
| 1496 | "for pid=%d tid=%x\n", |
| 1497 | (unsigned) current_event.dwProcessId, |
| 1498 | (unsigned) current_event.dwThreadId)); |
| 1499 | handle_exception (ourstatus); |
| 1500 | break; |
| 1501 | |
| 1502 | case OUTPUT_DEBUG_STRING_EVENT: |
| 1503 | /* A message from the kernel (or Cygwin). */ |
| 1504 | OUTMSG2 (("gdbserver: kernel event OUTPUT_DEBUG_STRING_EVENT " |
| 1505 | "for pid=%d tid=%x\n", |
| 1506 | (unsigned) current_event.dwProcessId, |
| 1507 | (unsigned) current_event.dwThreadId)); |
| 1508 | handle_output_debug_string (ourstatus); |
| 1509 | break; |
| 1510 | |
| 1511 | default: |
| 1512 | OUTMSG2 (("gdbserver: kernel event unknown " |
| 1513 | "for pid=%d tid=%x code=%ld\n", |
| 1514 | (unsigned) current_event.dwProcessId, |
| 1515 | (unsigned) current_event.dwThreadId, |
| 1516 | current_event.dwDebugEventCode)); |
| 1517 | break; |
| 1518 | } |
| 1519 | |
| 1520 | current_inferior = |
| 1521 | (struct thread_info *) find_inferior_id (&all_threads, |
| 1522 | current_event.dwThreadId); |
| 1523 | return 1; |
| 1524 | } |
| 1525 | |
| 1526 | /* Wait for the inferior process to change state. |
| 1527 | STATUS will be filled in with a response code to send to GDB. |
| 1528 | Returns the signal which caused the process to stop. */ |
| 1529 | static unsigned char |
| 1530 | win32_wait (char *status) |
| 1531 | { |
| 1532 | struct target_waitstatus our_status; |
| 1533 | |
| 1534 | *status = 'T'; |
| 1535 | |
| 1536 | while (1) |
| 1537 | { |
| 1538 | if (!get_child_debug_event (&our_status)) |
| 1539 | continue; |
| 1540 | |
| 1541 | switch (our_status.kind) |
| 1542 | { |
| 1543 | case TARGET_WAITKIND_EXITED: |
| 1544 | OUTMSG2 (("Child exited with retcode = %x\n", |
| 1545 | our_status.value.integer)); |
| 1546 | |
| 1547 | *status = 'W'; |
| 1548 | return our_status.value.integer; |
| 1549 | case TARGET_WAITKIND_STOPPED: |
| 1550 | case TARGET_WAITKIND_LOADED: |
| 1551 | OUTMSG2 (("Child Stopped with signal = %d \n", |
| 1552 | our_status.value.sig)); |
| 1553 | |
| 1554 | *status = 'T'; |
| 1555 | |
| 1556 | child_fetch_inferior_registers (-1); |
| 1557 | |
| 1558 | if (our_status.kind == TARGET_WAITKIND_LOADED |
| 1559 | && !server_waiting) |
| 1560 | { |
| 1561 | /* When gdb connects, we want to be stopped at the |
| 1562 | initial breakpoint, not in some dll load event. */ |
| 1563 | child_continue (DBG_CONTINUE, -1); |
| 1564 | break; |
| 1565 | } |
| 1566 | |
| 1567 | return our_status.value.sig; |
| 1568 | default: |
| 1569 | OUTMSG (("Ignoring unknown internal event, %d\n", our_status.kind)); |
| 1570 | /* fall-through */ |
| 1571 | case TARGET_WAITKIND_SPURIOUS: |
| 1572 | case TARGET_WAITKIND_EXECD: |
| 1573 | /* do nothing, just continue */ |
| 1574 | child_continue (DBG_CONTINUE, -1); |
| 1575 | break; |
| 1576 | } |
| 1577 | } |
| 1578 | } |
| 1579 | |
| 1580 | /* Fetch registers from the inferior process. |
| 1581 | If REGNO is -1, fetch all registers; otherwise, fetch at least REGNO. */ |
| 1582 | static void |
| 1583 | win32_fetch_inferior_registers (int regno) |
| 1584 | { |
| 1585 | child_fetch_inferior_registers (regno); |
| 1586 | } |
| 1587 | |
| 1588 | /* Store registers to the inferior process. |
| 1589 | If REGNO is -1, store all registers; otherwise, store at least REGNO. */ |
| 1590 | static void |
| 1591 | win32_store_inferior_registers (int regno) |
| 1592 | { |
| 1593 | child_store_inferior_registers (regno); |
| 1594 | } |
| 1595 | |
| 1596 | /* Read memory from the inferior process. This should generally be |
| 1597 | called through read_inferior_memory, which handles breakpoint shadowing. |
| 1598 | Read LEN bytes at MEMADDR into a buffer at MYADDR. */ |
| 1599 | static int |
| 1600 | win32_read_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
| 1601 | { |
| 1602 | return child_xfer_memory (memaddr, (char *) myaddr, len, 0, 0) != len; |
| 1603 | } |
| 1604 | |
| 1605 | /* Write memory to the inferior process. This should generally be |
| 1606 | called through write_inferior_memory, which handles breakpoint shadowing. |
| 1607 | Write LEN bytes from the buffer at MYADDR to MEMADDR. |
| 1608 | Returns 0 on success and errno on failure. */ |
| 1609 | static int |
| 1610 | win32_write_inferior_memory (CORE_ADDR memaddr, const unsigned char *myaddr, |
| 1611 | int len) |
| 1612 | { |
| 1613 | return child_xfer_memory (memaddr, (char *) myaddr, len, 1, 0) != len; |
| 1614 | } |
| 1615 | |
| 1616 | /* Send an interrupt request to the inferior process. */ |
| 1617 | static void |
| 1618 | win32_request_interrupt (void) |
| 1619 | { |
| 1620 | winapi_DebugBreakProcess DebugBreakProcess; |
| 1621 | winapi_GenerateConsoleCtrlEvent GenerateConsoleCtrlEvent; |
| 1622 | |
| 1623 | #ifdef _WIN32_WCE |
| 1624 | HMODULE dll = GetModuleHandle (_T("COREDLL.DLL")); |
| 1625 | #else |
| 1626 | HMODULE dll = GetModuleHandle (_T("KERNEL32.DLL")); |
| 1627 | #endif |
| 1628 | |
| 1629 | GenerateConsoleCtrlEvent = GETPROCADDRESS (dll, GenerateConsoleCtrlEvent); |
| 1630 | |
| 1631 | if (GenerateConsoleCtrlEvent != NULL |
| 1632 | && GenerateConsoleCtrlEvent (CTRL_BREAK_EVENT, current_process_id)) |
| 1633 | return; |
| 1634 | |
| 1635 | /* GenerateConsoleCtrlEvent can fail if process id being debugged is |
| 1636 | not a process group id. |
| 1637 | Fallback to XP/Vista 'DebugBreakProcess', which generates a |
| 1638 | breakpoint exception in the interior process. */ |
| 1639 | |
| 1640 | DebugBreakProcess = GETPROCADDRESS (dll, DebugBreakProcess); |
| 1641 | |
| 1642 | if (DebugBreakProcess != NULL |
| 1643 | && DebugBreakProcess (current_process_handle)) |
| 1644 | return; |
| 1645 | |
| 1646 | /* Last resort, suspend all threads manually. */ |
| 1647 | soft_interrupt_requested = 1; |
| 1648 | } |
| 1649 | |
| 1650 | static const char * |
| 1651 | win32_arch_string (void) |
| 1652 | { |
| 1653 | return the_low_target.arch_string; |
| 1654 | } |
| 1655 | |
| 1656 | static struct target_ops win32_target_ops = { |
| 1657 | win32_create_inferior, |
| 1658 | win32_attach, |
| 1659 | win32_kill, |
| 1660 | win32_detach, |
| 1661 | win32_join, |
| 1662 | win32_thread_alive, |
| 1663 | win32_resume, |
| 1664 | win32_wait, |
| 1665 | win32_fetch_inferior_registers, |
| 1666 | win32_store_inferior_registers, |
| 1667 | win32_read_inferior_memory, |
| 1668 | win32_write_inferior_memory, |
| 1669 | NULL, |
| 1670 | win32_request_interrupt, |
| 1671 | NULL, |
| 1672 | NULL, |
| 1673 | NULL, |
| 1674 | NULL, |
| 1675 | NULL, |
| 1676 | NULL, |
| 1677 | NULL, |
| 1678 | win32_arch_string |
| 1679 | }; |
| 1680 | |
| 1681 | /* Initialize the Win32 backend. */ |
| 1682 | void |
| 1683 | initialize_low (void) |
| 1684 | { |
| 1685 | set_target_ops (&win32_target_ops); |
| 1686 | if (the_low_target.breakpoint != NULL) |
| 1687 | set_breakpoint_data (the_low_target.breakpoint, |
| 1688 | the_low_target.breakpoint_len); |
| 1689 | init_registers (); |
| 1690 | } |