git.oblomov.eu Git - wine/blob - dlls/ntdll/thread.c

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <stdarg.h>
  26 #include <sys/types.h>
  27 #ifdef HAVE_SYS_MMAN_H
  28 #include <sys/mman.h>
  29 #endif
  30 #ifdef HAVE_SYS_TIMES_H
  31 #include <sys/times.h>
  32 #endif
  33
  34 #define NONAMELESSUNION
  35 #include "ntstatus.h"
  36 #define WIN32_NO_STATUS
  37 #include "winternl.h"
  38 #include "wine/library.h"
  39 #include "wine/server.h"
  40 #include "wine/pthread.h"
  41 #include "wine/debug.h"
  42 #include "ntdll_misc.h"
  43 #include "ddk/wdm.h"
  44 #include "wine/exception.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  47 WINE_DECLARE_DEBUG_CHANNEL(relay);
  48
  49 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
  50
  51 PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter = NULL;
  52
  53 /* info passed to a starting thread */
  54 struct startup_info
  55 {
  56     struct wine_pthread_thread_info pthread_info;
  57     PRTL_THREAD_START_ROUTINE       entry_point;
  58     void                           *entry_arg;
  59 };
  60
  61 static PEB_LDR_DATA ldr;
  62 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  63 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  64 static RTL_BITMAP tls_bitmap;
  65 static RTL_BITMAP tls_expansion_bitmap;
  66 static RTL_BITMAP fls_bitmap;
  67 static LIST_ENTRY tls_links;
  68 static size_t sigstack_total_size;
  69 static ULONG sigstack_zero_bits;
  70 static int nb_threads = 1;
  71
  72 static struct wine_pthread_functions pthread_functions;
  73
  74
  75 static RTL_CRITICAL_SECTION ldt_section;
  76 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  77 {
  78     0, 0, &ldt_section,
  79     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  80       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  81 };
  82 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  83 static sigset_t ldt_sigset;
  84
  85 /***********************************************************************
  86  *           locking for LDT routines
  87  */
  88 static void ldt_lock(void)
  89 {
  90     sigset_t sigset;
  91
  92     pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
  93     RtlEnterCriticalSection( &ldt_section );
  94     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  95 }
  96
  97 static void ldt_unlock(void)
  98 {
  99     if (ldt_section.RecursionCount == 1)
 100     {
 101         sigset_t sigset = ldt_sigset;
 102         RtlLeaveCriticalSection( &ldt_section );
 103         pthread_sigmask( SIG_SETMASK, &sigset, NULL );
 104     }
 105     else RtlLeaveCriticalSection( &ldt_section );
 106 }
 107
 108
 109 /***********************************************************************
 110  *           init_teb
 111  */
 112 static inline NTSTATUS init_teb( TEB *teb )
 113 {
 114     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 115
 116     teb->Tib.ExceptionList = (void *)~0UL;
 117     teb->Tib.StackBase     = (void *)~0UL;
 118     teb->Tib.Self          = &teb->Tib;
 119     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 120     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 121
 122     if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 123     thread_data->request_fd = -1;
 124     thread_data->reply_fd   = -1;
 125     thread_data->wait_fd[0] = -1;
 126     thread_data->wait_fd[1] = -1;
 127
 128     return STATUS_SUCCESS;
 129 }
 130
 131
 132 /***********************************************************************
 133  *           fix_unicode_string
 134  *
 135  * Make sure the unicode string doesn't point beyond the end pointer
 136  */
 137 static inline void fix_unicode_string( UNICODE_STRING *str, const char *end_ptr )
 138 {
 139     if ((char *)str->Buffer >= end_ptr)
 140     {
 141         str->Length = str->MaximumLength = 0;
 142         str->Buffer = NULL;
 143         return;
 144     }
 145     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 146     {
 147         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 148     }
 149     if (str->Length >= str->MaximumLength)
 150     {
 151         if (str->MaximumLength >= sizeof(WCHAR))
 152             str->Length = str->MaximumLength - sizeof(WCHAR);
 153         else
 154             str->Length = str->MaximumLength = 0;
 155     }
 156 }
 157
 158
 159 /***********************************************************************
 160  *           init_user_process_params
 161  *
 162  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 163  */
 164 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 165 {
 166     void *ptr;
 167     SIZE_T env_size;
 168     NTSTATUS status;
 169     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 170
 171     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 172                                       MEM_COMMIT, PAGE_READWRITE );
 173     if (status != STATUS_SUCCESS) return status;
 174
 175     params->AllocationSize = info_size;
 176     NtCurrentTeb()->Peb->ProcessParameters = params;
 177
 178     SERVER_START_REQ( get_startup_info )
 179     {
 180         wine_server_set_reply( req, params, info_size );
 181         if (!(status = wine_server_call( req )))
 182         {
 183             info_size = wine_server_reply_size( reply );
 184             *exe_file = wine_server_ptr_handle( reply->exe_file );
 185             params->hStdInput  = wine_server_ptr_handle( reply->hstdin );
 186             params->hStdOutput = wine_server_ptr_handle( reply->hstdout );
 187             params->hStdError  = wine_server_ptr_handle( reply->hstderr );
 188         }
 189     }
 190     SERVER_END_REQ;
 191     if (status != STATUS_SUCCESS) return status;
 192
 193     if (params->Size > info_size) params->Size = info_size;
 194
 195     /* make sure the strings are valid */
 196     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 197     fix_unicode_string( &params->DllPath, (char *)info_size );
 198     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 199     fix_unicode_string( &params->CommandLine, (char *)info_size );
 200     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 201     fix_unicode_string( &params->Desktop, (char *)info_size );
 202     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 203     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 204
 205     /* environment needs to be a separate memory block */
 206     env_size = info_size - params->Size;
 207     if (!env_size) env_size = 1;
 208     ptr = NULL;
 209     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 210                                       MEM_COMMIT, PAGE_READWRITE );
 211     if (status != STATUS_SUCCESS) return status;
 212     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 213     params->Environment = ptr;
 214
 215     RtlNormalizeProcessParams( params );
 216     return status;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           thread_init
 222  *
 223  * Setup the initial thread.
 224  *
 225  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 226  */
 227 HANDLE thread_init(void)
 228 {
 229     PEB *peb;
 230     TEB *teb;
 231     void *addr;
 232     SIZE_T size, info_size;
 233     HANDLE exe_file = 0;
 234     LARGE_INTEGER now;
 235     struct ntdll_thread_data *thread_data;
 236     struct wine_pthread_thread_info thread_info;
 237     static struct debug_info debug_info;  /* debug info for initial thread */
 238
 239     virtual_init();
 240
 241     /* reserve space for shared user data */
 242
 243     addr = (void *)0x7ffe0000;
 244     size = 0x10000;
 245     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 246     user_shared_data = addr;
 247
 248     /* allocate and initialize the PEB */
 249
 250     addr = NULL;
 251     size = sizeof(*peb);
 252     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 253                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 254     peb = addr;
 255
 256     peb->NumberOfProcessors = 1;
 257     peb->ProcessParameters  = &params;
 258     peb->TlsBitmap          = &tls_bitmap;
 259     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 260     peb->FlsBitmap          = &fls_bitmap;
 261     peb->LdrData            = &ldr;
 262     params.CurrentDirectory.DosPath.Buffer = current_dir;
 263     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 264     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 265     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 266     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 267                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 268     RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
 269     InitializeListHead( &peb->FlsListHead );
 270     InitializeListHead( &ldr.InLoadOrderModuleList );
 271     InitializeListHead( &ldr.InMemoryOrderModuleList );
 272     InitializeListHead( &ldr.InInitializationOrderModuleList );
 273     InitializeListHead( &tls_links );
 274
 275     /* allocate and initialize the initial TEB */
 276
 277     sigstack_total_size = get_signal_stack_total_size();
 278     while (1U << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 279     assert( 1U << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 280     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 281     thread_info.teb_size = sigstack_total_size;
 282
 283     addr = NULL;
 284     size = sigstack_total_size;
 285     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 286                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 287     teb = addr;
 288     teb->Peb = peb;
 289     thread_info.teb_size = size;
 290     init_teb( teb );
 291     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 292     thread_data->debug_info = &debug_info;
 293     InsertHeadList( &tls_links, &teb->TlsLinks );
 294
 295     thread_info.stack_base = NULL;
 296     thread_info.stack_size = 0;
 297     thread_info.teb_base   = teb;
 298     thread_info.teb_sel    = thread_data->fs;
 299     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 300     signal_init_thread( teb );
 301     pthread_functions.init_thread( &thread_info );
 302     virtual_init_threading();
 303
 304     debug_info.str_pos = debug_info.strings;
 305     debug_info.out_pos = debug_info.output;
 306     debug_init();
 307
 308     /* setup the server connection */
 309     server_init_process();
 310     info_size = server_init_thread( NULL );
 311
 312     /* create the process heap */
 313     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 314     {
 315         MESSAGE( "wine: failed to create the process heap\n" );
 316         exit(1);
 317     }
 318
 319     /* allocate user parameters */
 320     if (info_size)
 321     {
 322         init_user_process_params( info_size, &exe_file );
 323     }
 324     else
 325     {
 326         /* This is wine specific: we have no parent (we're started from unix)
 327          * so, create a simple console with bare handles to unix stdio
 328          */
 329         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 330         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 331         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 332     }
 333
 334     /* initialize LDT locking */
 335     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 336
 337     /* initialize time values in user_shared_data */
 338     NtQuerySystemTime( &now );
 339     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 340     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 341     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 342     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 343     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 344     user_shared_data->TickCountMultiplier = 1 << 24;
 345
 346     pthread_init();
 347     return exe_file;
 348 }
 349
 350
 351 /***********************************************************************
 352  *           abort_thread
 353  */
 354 void abort_thread( int status )
 355 {
 356     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
 357     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) _exit( status );
 358
 359     close( ntdll_get_thread_data()->wait_fd[0] );
 360     close( ntdll_get_thread_data()->wait_fd[1] );
 361     close( ntdll_get_thread_data()->reply_fd );
 362     close( ntdll_get_thread_data()->request_fd );
 363     pthread_exit( UIntToPtr(status) );
 364 }
 365
 366
 367 /***********************************************************************
 368  *           exit_thread
 369  */
 370 static void DECLSPEC_NORETURN exit_thread( int status )
 371 {
 372     static void *prev_teb;
 373     TEB *teb;
 374
 375     RtlAcquirePebLock();
 376     RemoveEntryList( &NtCurrentTeb()->TlsLinks );
 377     RtlReleasePebLock();
 378     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->FlsSlots );
 379     RtlFreeHeap( GetProcessHeap(), 0, NtCurrentTeb()->TlsExpansionSlots );
 380
 381     pthread_sigmask( SIG_BLOCK, &server_block_set, NULL );
 382     if (interlocked_xchg_add( &nb_threads, -1 ) <= 1) exit( status );
 383
 384     if ((teb = interlocked_xchg_ptr( &prev_teb, NtCurrentTeb() )))
 385     {
 386         struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 387         SIZE_T size;
 388
 389         pthread_join( thread_data->pthread_id, NULL );
 390         wine_ldt_free_fs( thread_data->fs );
 391         size = 0;
 392         NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE );
 393         size = 0;
 394         NtFreeVirtualMemory( GetCurrentProcess(), (void **)&teb, &size, MEM_RELEASE );
 395     }
 396
 397     close( ntdll_get_thread_data()->wait_fd[0] );
 398     close( ntdll_get_thread_data()->wait_fd[1] );
 399     close( ntdll_get_thread_data()->reply_fd );
 400     close( ntdll_get_thread_data()->request_fd );
 401     pthread_exit( UIntToPtr(status) );
 402 }
 403
 404
 405 #ifdef __i386__
 406 /* wrapper for apps that don't declare the thread function correctly */
 407 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 408 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 409                   "pushl %ebp\n\t"
 410                   "movl %esp,%ebp\n\t"
 411                   "subl $4,%esp\n\t"
 412                   "pushl 12(%ebp)\n\t"
 413                   "movl 8(%ebp),%eax\n\t"
 414                   "call *%eax\n\t"
 415                   "leave\n\t"
 416                   "ret" )
 417 #else
 418 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 419 {
 420     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 421     return func( arg );
 422 }
 423 #endif
 424
 425 /***********************************************************************
 426  *           call_thread_func
 427  *
 428  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 429  */
 430 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 431 {
 432     DWORD exit_code;
 433     BOOL last;
 434
 435     MODULE_DllThreadAttach( NULL );
 436
 437     if (TRACE_ON(relay))
 438         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 439
 440     exit_code = call_thread_entry_point( rtl_func, arg );
 441
 442     /* send the exit code to the server */
 443     SERVER_START_REQ( terminate_thread )
 444     {
 445         req->handle    = wine_server_obj_handle( GetCurrentThread() );
 446         req->exit_code = exit_code;
 447         wine_server_call( req );
 448         last = reply->last;
 449     }
 450     SERVER_END_REQ;
 451
 452     if (last)
 453     {
 454         LdrShutdownProcess();
 455         exit( exit_code );
 456     }
 457     else
 458     {
 459         LdrShutdownThread();
 460         exit_thread( exit_code );
 461     }
 462 }
 463
 464
 465 /***********************************************************************
 466  *           start_thread
 467  *
 468  * Startup routine for a newly created thread.
 469  */
 470 static void start_thread( struct wine_pthread_thread_info *info )
 471 {
 472     TEB *teb = info->teb_base;
 473     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 474     struct startup_info *startup_info = (struct startup_info *)info;
 475     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 476     void *arg = startup_info->entry_arg;
 477     struct debug_info debug_info;
 478
 479     debug_info.str_pos = debug_info.strings;
 480     debug_info.out_pos = debug_info.output;
 481     thread_data->debug_info = &debug_info;
 482     thread_data->pthread_id = pthread_self();
 483
 484     signal_init_thread( teb );
 485     server_init_thread( func );
 486     pthread_functions.init_thread( info );
 487     virtual_alloc_thread_stack( info->stack_base, info->stack_size );
 488     pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
 489
 490     RtlAcquirePebLock();
 491     InsertHeadList( &tls_links, &teb->TlsLinks );
 492     RtlReleasePebLock();
 493
 494     /* NOTE: Windows does not have an exception handler around the call to
 495      * the thread attach. We do for ease of debugging */
 496     if (unhandled_exception_filter)
 497     {
 498         __TRY
 499         {
 500             call_thread_func( func, arg );
 501         }
 502         __EXCEPT(unhandled_exception_filter)
 503         {
 504             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 505         }
 506         __ENDTRY
 507     }
 508     else
 509         call_thread_func( func, arg );
 510 }
 511
 512
 513 /***********************************************************************
 514  *              RtlCreateUserThread   (NTDLL.@)
 515  */
 516 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 517                                      BOOLEAN suspended, PVOID stack_addr,
 518                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 519                                      PRTL_THREAD_START_ROUTINE start, void *param,
 520                                      HANDLE *handle_ptr, CLIENT_ID *id )
 521 {
 522     sigset_t sigset;
 523     pthread_t pthread_id;
 524     pthread_attr_t attr;
 525     struct ntdll_thread_data *thread_data = NULL;
 526     struct ntdll_thread_regs *thread_regs;
 527     struct startup_info *info = NULL;
 528     void *addr = NULL;
 529     HANDLE handle = 0;
 530     TEB *teb;
 531     DWORD tid = 0;
 532     int request_pipe[2];
 533     NTSTATUS status;
 534     SIZE_T size, page_size = getpagesize();
 535
 536     if (process != NtCurrentProcess())
 537     {
 538         apc_call_t call;
 539         apc_result_t result;
 540
 541         memset( &call, 0, sizeof(call) );
 542
 543         call.create_thread.type    = APC_CREATE_THREAD;
 544         call.create_thread.func    = wine_server_client_ptr( start );
 545         call.create_thread.arg     = wine_server_client_ptr( param );
 546         call.create_thread.reserve = stack_reserve;
 547         call.create_thread.commit  = stack_commit;
 548         call.create_thread.suspend = suspended;
 549         status = NTDLL_queue_process_apc( process, &call, &result );
 550         if (status != STATUS_SUCCESS) return status;
 551
 552         if (result.create_thread.status == STATUS_SUCCESS)
 553         {
 554             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 555             if (handle_ptr) *handle_ptr = wine_server_ptr_handle( result.create_thread.handle );
 556             else NtClose( wine_server_ptr_handle( result.create_thread.handle ));
 557         }
 558         return result.create_thread.status;
 559     }
 560
 561     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 562     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 563     wine_server_send_fd( request_pipe[0] );
 564
 565     SERVER_START_REQ( new_thread )
 566     {
 567         req->access     = THREAD_ALL_ACCESS;
 568         req->attributes = 0;  /* FIXME */
 569         req->suspend    = suspended;
 570         req->request_fd = request_pipe[0];
 571         if (!(status = wine_server_call( req )))
 572         {
 573             handle = wine_server_ptr_handle( reply->handle );
 574             tid = reply->tid;
 575         }
 576         close( request_pipe[0] );
 577     }
 578     SERVER_END_REQ;
 579
 580     if (status)
 581     {
 582         close( request_pipe[1] );
 583         return status;
 584     }
 585
 586     pthread_sigmask( SIG_BLOCK, &server_block_set, &sigset );
 587
 588     addr = NULL;
 589     size = sigstack_total_size;
 590     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 591                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 592         goto error;
 593     teb = addr;
 594     teb->Peb = NtCurrentTeb()->Peb;
 595     info = (struct startup_info *)(teb + 1);
 596     info->pthread_info.teb_size = size;
 597     if ((status = init_teb( teb ))) goto error;
 598
 599     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 600     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 601
 602     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 603     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 604     thread_data->request_fd  = request_pipe[1];
 605
 606     info->pthread_info.teb_base = teb;
 607     info->pthread_info.teb_sel  = thread_data->fs;
 608
 609     /* inherit debug registers from parent thread */
 610     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 611     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 612     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 613     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 614     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 615     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 616
 617     if (!stack_reserve || !stack_commit)
 618     {
 619         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 620         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 621         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 622     }
 623     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 624     stack_reserve += page_size;  /* for the guard page */
 625     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 626     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 627
 628     info->pthread_info.stack_base = NULL;
 629     info->pthread_info.stack_size = stack_reserve;
 630     info->pthread_info.entry      = start_thread;
 631     info->entry_point             = start;
 632     info->entry_arg               = param;
 633
 634     pthread_attr_init( &attr );
 635     pthread_attr_setstacksize( &attr, stack_reserve );
 636     pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread */
 637     interlocked_xchg_add( &nb_threads, 1 );
 638     if (pthread_create( &pthread_id, &attr, (void * (*)(void *))start_thread, info ))
 639     {
 640         interlocked_xchg_add( &nb_threads, -1 );
 641         pthread_attr_destroy( &attr );
 642         status = STATUS_NO_MEMORY;
 643         goto error;
 644     }
 645     pthread_attr_destroy( &attr );
 646     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
 647
 648     if (id) id->UniqueThread = ULongToHandle(tid);
 649     if (handle_ptr) *handle_ptr = handle;
 650     else NtClose( handle );
 651
 652     return STATUS_SUCCESS;
 653
 654 error:
 655     if (thread_data) wine_ldt_free_fs( thread_data->fs );
 656     if (addr)
 657     {
 658         SIZE_T size = 0;
 659         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 660     }
 661     if (handle) NtClose( handle );
 662     pthread_sigmask( SIG_SETMASK, &sigset, NULL );
 663     close( request_pipe[1] );
 664     return status;
 665 }
 666
 667
 668 /***********************************************************************
 669  *           RtlExitUserThread  (NTDLL.@)
 670  */
 671 void WINAPI RtlExitUserThread( ULONG status )
 672 {
 673     BOOL last;
 674
 675     SERVER_START_REQ( terminate_thread )
 676     {
 677         /* send the exit code to the server */
 678         req->handle    = wine_server_obj_handle( GetCurrentThread() );
 679         req->exit_code = status;
 680         wine_server_call( req );
 681         last = reply->last;
 682     }
 683     SERVER_END_REQ;
 684
 685     if (last)
 686     {
 687         LdrShutdownProcess();
 688         exit( status );
 689     }
 690     else
 691     {
 692         LdrShutdownThread();
 693         exit_thread( status );
 694     }
 695 }
 696
 697
 698 /***********************************************************************
 699  *              NtOpenThread   (NTDLL.@)
 700  *              ZwOpenThread   (NTDLL.@)
 701  */
 702 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 703                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 704 {
 705     NTSTATUS ret;
 706
 707     SERVER_START_REQ( open_thread )
 708     {
 709         req->tid        = HandleToULong(id->UniqueThread);
 710         req->access     = access;
 711         req->attributes = attr ? attr->Attributes : 0;
 712         ret = wine_server_call( req );
 713         *handle = wine_server_ptr_handle( reply->handle );
 714     }
 715     SERVER_END_REQ;
 716     return ret;
 717 }
 718
 719
 720 /******************************************************************************
 721  *              NtSuspendThread   (NTDLL.@)
 722  *              ZwSuspendThread   (NTDLL.@)
 723  */
 724 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 725 {
 726     NTSTATUS ret;
 727
 728     SERVER_START_REQ( suspend_thread )
 729     {
 730         req->handle = wine_server_obj_handle( handle );
 731         if (!(ret = wine_server_call( req ))) *count = reply->count;
 732     }
 733     SERVER_END_REQ;
 734     return ret;
 735 }
 736
 737
 738 /******************************************************************************
 739  *              NtResumeThread   (NTDLL.@)
 740  *              ZwResumeThread   (NTDLL.@)
 741  */
 742 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 743 {
 744     NTSTATUS ret;
 745
 746     SERVER_START_REQ( resume_thread )
 747     {
 748         req->handle = wine_server_obj_handle( handle );
 749         if (!(ret = wine_server_call( req ))) *count = reply->count;
 750     }
 751     SERVER_END_REQ;
 752     return ret;
 753 }
 754
 755
 756 /******************************************************************************
 757  *              NtAlertResumeThread   (NTDLL.@)
 758  *              ZwAlertResumeThread   (NTDLL.@)
 759  */
 760 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 761 {
 762     FIXME( "stub: should alert thread %p\n", handle );
 763     return NtResumeThread( handle, count );
 764 }
 765
 766
 767 /******************************************************************************
 768  *              NtAlertThread   (NTDLL.@)
 769  *              ZwAlertThread   (NTDLL.@)
 770  */
 771 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 772 {
 773     FIXME( "stub: %p\n", handle );
 774     return STATUS_NOT_IMPLEMENTED;
 775 }
 776
 777
 778 /******************************************************************************
 779  *              NtTerminateThread  (NTDLL.@)
 780  *              ZwTerminateThread  (NTDLL.@)
 781  */
 782 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 783 {
 784     NTSTATUS ret;
 785     BOOL self, last;
 786
 787     SERVER_START_REQ( terminate_thread )
 788     {
 789         req->handle    = wine_server_obj_handle( handle );
 790         req->exit_code = exit_code;
 791         ret = wine_server_call( req );
 792         self = !ret && reply->self;
 793         last = reply->last;
 794     }
 795     SERVER_END_REQ;
 796
 797     if (self)
 798     {
 799         if (last) _exit( exit_code );
 800         else abort_thread( exit_code );
 801     }
 802     return ret;
 803 }
 804
 805
 806 /******************************************************************************
 807  *              NtQueueApcThread  (NTDLL.@)
 808  */
 809 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 810                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 811 {
 812     NTSTATUS ret;
 813     SERVER_START_REQ( queue_apc )
 814     {
 815         req->handle = wine_server_obj_handle( handle );
 816         if (func)
 817         {
 818             req->call.type         = APC_USER;
 819             req->call.user.func    = wine_server_client_ptr( func );
 820             req->call.user.args[0] = arg1;
 821             req->call.user.args[1] = arg2;
 822             req->call.user.args[2] = arg3;
 823         }
 824         else req->call.type = APC_NONE;  /* wake up only */
 825         ret = wine_server_call( req );
 826     }
 827     SERVER_END_REQ;
 828     return ret;
 829 }
 830
 831
 832 /***********************************************************************
 833  *              NtSetContextThread  (NTDLL.@)
 834  *              ZwSetContextThread  (NTDLL.@)
 835  */
 836 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 837 {
 838     NTSTATUS ret;
 839     DWORD dummy, i;
 840     BOOL self = FALSE;
 841
 842 #ifdef __i386__
 843     /* on i386 debug registers always require a server call */
 844     self = (handle == GetCurrentThread());
 845     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 846     {
 847         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 848         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 849                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 850                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 851     }
 852 #endif
 853
 854     if (!self)
 855     {
 856         SERVER_START_REQ( set_thread_context )
 857         {
 858             req->handle  = wine_server_obj_handle( handle );
 859             req->flags   = context->ContextFlags;
 860             req->suspend = 0;
 861             wine_server_add_data( req, context, sizeof(*context) );
 862             ret = wine_server_call( req );
 863             self = reply->self;
 864         }
 865         SERVER_END_REQ;
 866
 867         if (ret == STATUS_PENDING)
 868         {
 869             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 870             {
 871                 for (i = 0; i < 100; i++)
 872                 {
 873                     SERVER_START_REQ( set_thread_context )
 874                     {
 875                         req->handle  = wine_server_obj_handle( handle );
 876                         req->flags   = context->ContextFlags;
 877                         req->suspend = 0;
 878                         wine_server_add_data( req, context, sizeof(*context) );
 879                         ret = wine_server_call( req );
 880                     }
 881                     SERVER_END_REQ;
 882                     if (ret == STATUS_PENDING)
 883                     {
 884                         LARGE_INTEGER timeout;
 885                         timeout.QuadPart = -10000;
 886                         NtDelayExecution( FALSE, &timeout );
 887                     }
 888                     else break;
 889                 }
 890                 NtResumeThread( handle, &dummy );
 891             }
 892             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 893         }
 894
 895         if (ret) return ret;
 896     }
 897
 898     if (self) set_cpu_context( context );
 899     return STATUS_SUCCESS;
 900 }
 901
 902
 903 /* copy a context structure according to the flags */
 904 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 905 {
 906 #ifdef __i386__
 907     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 908     if (flags & CONTEXT_INTEGER)
 909     {
 910         to->Eax = from->Eax;
 911         to->Ebx = from->Ebx;
 912         to->Ecx = from->Ecx;
 913         to->Edx = from->Edx;
 914         to->Esi = from->Esi;
 915         to->Edi = from->Edi;
 916     }
 917     if (flags & CONTEXT_CONTROL)
 918     {
 919         to->Ebp    = from->Ebp;
 920         to->Esp    = from->Esp;
 921         to->Eip    = from->Eip;
 922         to->SegCs  = from->SegCs;
 923         to->SegSs  = from->SegSs;
 924         to->EFlags = from->EFlags;
 925     }
 926     if (flags & CONTEXT_SEGMENTS)
 927     {
 928         to->SegDs = from->SegDs;
 929         to->SegEs = from->SegEs;
 930         to->SegFs = from->SegFs;
 931         to->SegGs = from->SegGs;
 932     }
 933     if (flags & CONTEXT_DEBUG_REGISTERS)
 934     {
 935         to->Dr0 = from->Dr0;
 936         to->Dr1 = from->Dr1;
 937         to->Dr2 = from->Dr2;
 938         to->Dr3 = from->Dr3;
 939         to->Dr6 = from->Dr6;
 940         to->Dr7 = from->Dr7;
 941     }
 942     if (flags & CONTEXT_FLOATING_POINT)
 943     {
 944         to->FloatSave = from->FloatSave;
 945     }
 946     if (flags & CONTEXT_EXTENDED_REGISTERS)
 947     {
 948         memcpy( to->ExtendedRegisters, from->ExtendedRegisters, sizeof(to->ExtendedRegisters) );
 949     }
 950 #elif defined(__x86_64__)
 951     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 952     if (flags & CONTEXT_CONTROL)
 953     {
 954         to->Rbp    = from->Rbp;
 955         to->Rip    = from->Rip;
 956         to->Rsp    = from->Rsp;
 957         to->SegCs  = from->SegCs;
 958         to->SegSs  = from->SegSs;
 959         to->EFlags = from->EFlags;
 960         to->MxCsr  = from->MxCsr;
 961     }
 962     if (flags & CONTEXT_INTEGER)
 963     {
 964         to->Rax = from->Rax;
 965         to->Rcx = from->Rcx;
 966         to->Rdx = from->Rdx;
 967         to->Rbx = from->Rbx;
 968         to->Rsi = from->Rsi;
 969         to->Rdi = from->Rdi;
 970         to->R8  = from->R8;
 971         to->R9  = from->R9;
 972         to->R10 = from->R10;
 973         to->R11 = from->R11;
 974         to->R12 = from->R12;
 975         to->R13 = from->R13;
 976         to->R14 = from->R14;
 977         to->R15 = from->R15;
 978     }
 979     if (flags & CONTEXT_SEGMENTS)
 980     {
 981         to->SegDs = from->SegDs;
 982         to->SegEs = from->SegEs;
 983         to->SegFs = from->SegFs;
 984         to->SegGs = from->SegGs;
 985     }
 986     if (flags & CONTEXT_FLOATING_POINT)
 987     {
 988         to->u.FltSave = from->u.FltSave;
 989     }
 990     if (flags & CONTEXT_DEBUG_REGISTERS)
 991     {
 992         to->Dr0 = from->Dr0;
 993         to->Dr1 = from->Dr1;
 994         to->Dr2 = from->Dr2;
 995         to->Dr3 = from->Dr3;
 996         to->Dr6 = from->Dr6;
 997         to->Dr7 = from->Dr7;
 998     }
 999 #elif defined(__sparc__)
1000     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
1001     if (flags & CONTEXT_CONTROL)
1002     {
1003         to->psr = from->psr;
1004         to->pc  = from->pc;
1005         to->npc = from->npc;
1006         to->y   = from->y;
1007         to->wim = from->wim;
1008         to->tbr = from->tbr;
1009     }
1010     if (flags & CONTEXT_INTEGER)
1011     {
1012         to->g0 = from->g0;
1013         to->g1 = from->g1;
1014         to->g2 = from->g2;
1015         to->g3 = from->g3;
1016         to->g4 = from->g4;
1017         to->g5 = from->g5;
1018         to->g6 = from->g6;
1019         to->g7 = from->g7;
1020         to->o0 = from->o0;
1021         to->o1 = from->o1;
1022         to->o2 = from->o2;
1023         to->o3 = from->o3;
1024         to->o4 = from->o4;
1025         to->o5 = from->o5;
1026         to->o6 = from->o6;
1027         to->o7 = from->o7;
1028         to->l0 = from->l0;
1029         to->l1 = from->l1;
1030         to->l2 = from->l2;
1031         to->l3 = from->l3;
1032         to->l4 = from->l4;
1033         to->l5 = from->l5;
1034         to->l6 = from->l6;
1035         to->l7 = from->l7;
1036         to->i0 = from->i0;
1037         to->i1 = from->i1;
1038         to->i2 = from->i2;
1039         to->i3 = from->i3;
1040         to->i4 = from->i4;
1041         to->i5 = from->i5;
1042         to->i6 = from->i6;
1043         to->i7 = from->i7;
1044     }
1045     if (flags & CONTEXT_FLOATING_POINT)
1046     {
1047         /* FIXME */
1048     }
1049 #elif defined(__powerpc__)
1050     /* Has no CPU id */
1051     if (flags & CONTEXT_CONTROL)
1052     {
1053         to->Msr = from->Msr;
1054         to->Ctr = from->Ctr;
1055         to->Iar = from->Iar;
1056     }
1057     if (flags & CONTEXT_INTEGER)
1058     {
1059         to->Gpr0  = from->Gpr0;
1060         to->Gpr1  = from->Gpr1;
1061         to->Gpr2  = from->Gpr2;
1062         to->Gpr3  = from->Gpr3;
1063         to->Gpr4  = from->Gpr4;
1064         to->Gpr5  = from->Gpr5;
1065         to->Gpr6  = from->Gpr6;
1066         to->Gpr7  = from->Gpr7;
1067         to->Gpr8  = from->Gpr8;
1068         to->Gpr9  = from->Gpr9;
1069         to->Gpr10 = from->Gpr10;
1070         to->Gpr11 = from->Gpr11;
1071         to->Gpr12 = from->Gpr12;
1072         to->Gpr13 = from->Gpr13;
1073         to->Gpr14 = from->Gpr14;
1074         to->Gpr15 = from->Gpr15;
1075         to->Gpr16 = from->Gpr16;
1076         to->Gpr17 = from->Gpr17;
1077         to->Gpr18 = from->Gpr18;
1078         to->Gpr19 = from->Gpr19;
1079         to->Gpr20 = from->Gpr20;
1080         to->Gpr21 = from->Gpr21;
1081         to->Gpr22 = from->Gpr22;
1082         to->Gpr23 = from->Gpr23;
1083         to->Gpr24 = from->Gpr24;
1084         to->Gpr25 = from->Gpr25;
1085         to->Gpr26 = from->Gpr26;
1086         to->Gpr27 = from->Gpr27;
1087         to->Gpr28 = from->Gpr28;
1088         to->Gpr29 = from->Gpr29;
1089         to->Gpr30 = from->Gpr30;
1090         to->Gpr31 = from->Gpr31;
1091         to->Xer   = from->Xer;
1092         to->Cr    = from->Cr;
1093     }
1094     if (flags & CONTEXT_FLOATING_POINT)
1095     {
1096         to->Fpr0  = from->Fpr0;
1097         to->Fpr1  = from->Fpr1;
1098         to->Fpr2  = from->Fpr2;
1099         to->Fpr3  = from->Fpr3;
1100         to->Fpr4  = from->Fpr4;
1101         to->Fpr5  = from->Fpr5;
1102         to->Fpr6  = from->Fpr6;
1103         to->Fpr7  = from->Fpr7;
1104         to->Fpr8  = from->Fpr8;
1105         to->Fpr9  = from->Fpr9;
1106         to->Fpr10 = from->Fpr10;
1107         to->Fpr11 = from->Fpr11;
1108         to->Fpr12 = from->Fpr12;
1109         to->Fpr13 = from->Fpr13;
1110         to->Fpr14 = from->Fpr14;
1111         to->Fpr15 = from->Fpr15;
1112         to->Fpr16 = from->Fpr16;
1113         to->Fpr17 = from->Fpr17;
1114         to->Fpr18 = from->Fpr18;
1115         to->Fpr19 = from->Fpr19;
1116         to->Fpr20 = from->Fpr20;
1117         to->Fpr21 = from->Fpr21;
1118         to->Fpr22 = from->Fpr22;
1119         to->Fpr23 = from->Fpr23;
1120         to->Fpr24 = from->Fpr24;
1121         to->Fpr25 = from->Fpr25;
1122         to->Fpr26 = from->Fpr26;
1123         to->Fpr27 = from->Fpr27;
1124         to->Fpr28 = from->Fpr28;
1125         to->Fpr29 = from->Fpr29;
1126         to->Fpr30 = from->Fpr30;
1127         to->Fpr31 = from->Fpr31;
1128         to->Fpscr = from->Fpscr;
1129     }
1130 #else
1131 #error You must implement context copying for your CPU
1132 #endif
1133 }
1134
1135
1136 /***********************************************************************
1137  *              NtGetContextThread  (NTDLL.@)
1138  *              ZwGetContextThread  (NTDLL.@)
1139  */
1140 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1141 {
1142     NTSTATUS ret;
1143     CONTEXT ctx;
1144     DWORD dummy, i;
1145     DWORD needed_flags = context->ContextFlags;
1146     BOOL self = (handle == GetCurrentThread());
1147
1148 #ifdef __i386__
1149     /* on i386 debug registers always require a server call */
1150     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1151 #endif
1152
1153     if (!self)
1154     {
1155         SERVER_START_REQ( get_thread_context )
1156         {
1157             req->handle  = wine_server_obj_handle( handle );
1158             req->flags   = context->ContextFlags;
1159             req->suspend = 0;
1160             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1161             ret = wine_server_call( req );
1162             self = reply->self;
1163         }
1164         SERVER_END_REQ;
1165
1166         if (ret == STATUS_PENDING)
1167         {
1168             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1169             {
1170                 for (i = 0; i < 100; i++)
1171                 {
1172                     SERVER_START_REQ( get_thread_context )
1173                     {
1174                         req->handle  = wine_server_obj_handle( handle );
1175                         req->flags   = context->ContextFlags;
1176                         req->suspend = 0;
1177                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1178                         ret = wine_server_call( req );
1179                     }
1180                     SERVER_END_REQ;
1181                     if (ret == STATUS_PENDING)
1182                     {
1183                         LARGE_INTEGER timeout;
1184                         timeout.QuadPart = -10000;
1185                         NtDelayExecution( FALSE, &timeout );
1186                     }
1187                     else break;
1188                 }
1189                 NtResumeThread( handle, &dummy );
1190             }
1191             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1192         }
1193         if (ret) return ret;
1194         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1195         needed_flags &= ~ctx.ContextFlags;
1196     }
1197
1198     if (self)
1199     {
1200         if (needed_flags)
1201         {
1202             RtlCaptureContext( &ctx );
1203             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1204         }
1205 #ifdef __i386__
1206         /* update the cached version of the debug registers */
1207         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1208         {
1209             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1210             regs->dr0 = context->Dr0;
1211             regs->dr1 = context->Dr1;
1212             regs->dr2 = context->Dr2;
1213             regs->dr3 = context->Dr3;
1214             regs->dr6 = context->Dr6;
1215             regs->dr7 = context->Dr7;
1216         }
1217 #endif
1218     }
1219     return STATUS_SUCCESS;
1220 }
1221
1222
1223 /******************************************************************************
1224  *              NtQueryInformationThread  (NTDLL.@)
1225  *              ZwQueryInformationThread  (NTDLL.@)
1226  */
1227 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1228                                           void *data, ULONG length, ULONG *ret_len )
1229 {
1230     NTSTATUS status;
1231
1232     switch(class)
1233     {
1234     case ThreadBasicInformation:
1235         {
1236             THREAD_BASIC_INFORMATION info;
1237             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1238
1239             SERVER_START_REQ( get_thread_info )
1240             {
1241                 req->handle = wine_server_obj_handle( handle );
1242                 req->tid_in = 0;
1243                 if (!(status = wine_server_call( req )))
1244                 {
1245                     info.ExitStatus             = reply->exit_code;
1246                     info.TebBaseAddress         = wine_server_get_ptr( reply->teb );
1247                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
1248                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
1249                     info.AffinityMask           = reply->affinity & affinity_mask;
1250                     info.Priority               = reply->priority;
1251                     info.BasePriority           = reply->priority;  /* FIXME */
1252                 }
1253             }
1254             SERVER_END_REQ;
1255             if (status == STATUS_SUCCESS)
1256             {
1257                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1258                 if (ret_len) *ret_len = min( length, sizeof(info) );
1259             }
1260         }
1261         return status;
1262     case ThreadAffinityMask:
1263         {
1264             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1265             ULONG_PTR affinity = 0;
1266
1267             SERVER_START_REQ( get_thread_info )
1268             {
1269                 req->handle = wine_server_obj_handle( handle );
1270                 req->tid_in = 0;
1271                 if (!(status = wine_server_call( req )))
1272                     affinity = reply->affinity & affinity_mask;
1273             }
1274             SERVER_END_REQ;
1275             if (status == STATUS_SUCCESS)
1276             {
1277                 if (data) memcpy( data, &affinity, min( length, sizeof(affinity) ));
1278                 if (ret_len) *ret_len = min( length, sizeof(affinity) );
1279             }
1280         }
1281         return status;
1282     case ThreadTimes:
1283         {
1284             KERNEL_USER_TIMES   kusrt;
1285             /* We need to do a server call to get the creation time or exit time */
1286             /* This works on any thread */
1287             SERVER_START_REQ( get_thread_info )
1288             {
1289                 req->handle = wine_server_obj_handle( handle );
1290                 req->tid_in = 0;
1291                 status = wine_server_call( req );
1292                 if (status == STATUS_SUCCESS)
1293                 {
1294                     kusrt.CreateTime.QuadPart = reply->creation_time;
1295                     kusrt.ExitTime.QuadPart = reply->exit_time;
1296                 }
1297             }
1298             SERVER_END_REQ;
1299             if (status == STATUS_SUCCESS)
1300             {
1301                 /* We call times(2) for kernel time or user time */
1302                 /* We can only (portably) do this for the current thread */
1303                 if (handle == GetCurrentThread())
1304                 {
1305                     struct tms time_buf;
1306                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1307
1308                     times(&time_buf);
1309                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1310                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1311                 }
1312                 else
1313                 {
1314                     static BOOL reported = FALSE;
1315
1316                     kusrt.KernelTime.QuadPart = 0;
1317                     kusrt.UserTime.QuadPart = 0;
1318                     if (reported)
1319                         TRACE("Cannot get kerneltime or usertime of other threads\n");
1320                     else
1321                     {
1322                         FIXME("Cannot get kerneltime or usertime of other threads\n");
1323                         reported = TRUE;
1324                     }
1325                 }
1326                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1327                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1328             }
1329         }
1330         return status;
1331     case ThreadDescriptorTableEntry:
1332         {
1333 #ifdef __i386__
1334             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1335             if (length < sizeof(*tdi))
1336                 status = STATUS_INFO_LENGTH_MISMATCH;
1337             else if (!(tdi->Selector & 4))  /* GDT selector */
1338             {
1339                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1340                 status = STATUS_SUCCESS;
1341                 if (!sel)  /* null selector */
1342                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1343                 else
1344                 {
1345                     tdi->Entry.BaseLow                   = 0;
1346                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1347                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1348                     tdi->Entry.LimitLow                  = 0xffff;
1349                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1350                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1351                     tdi->Entry.HighWord.Bits.Sys         = 0;
1352                     tdi->Entry.HighWord.Bits.Pres        = 1;
1353                     tdi->Entry.HighWord.Bits.Granularity = 1;
1354                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1355                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1356                     /* it has to be one of the system GDT selectors */
1357                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1358                     {
1359                         if (sel == (wine_get_cs() & ~3))
1360                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1361                         else status = STATUS_ACCESS_DENIED;
1362                     }
1363                 }
1364             }
1365             else
1366             {
1367                 SERVER_START_REQ( get_selector_entry )
1368                 {
1369                     req->handle = wine_server_obj_handle( handle );
1370                     req->entry = tdi->Selector >> 3;
1371                     status = wine_server_call( req );
1372                     if (!status)
1373                     {
1374                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1375                             status = STATUS_ACCESS_VIOLATION;
1376                         else
1377                         {
1378                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1379                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1380                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1381                         }
1382                     }
1383                 }
1384                 SERVER_END_REQ;
1385             }
1386             if (status == STATUS_SUCCESS && ret_len)
1387                 /* yes, that's a bit strange, but it's the way it is */
1388                 *ret_len = sizeof(LDT_ENTRY);
1389 #else
1390             status = STATUS_NOT_IMPLEMENTED;
1391 #endif
1392             return status;
1393         }
1394     case ThreadAmILastThread:
1395         {
1396             SERVER_START_REQ(get_thread_info)
1397             {
1398                 req->handle = wine_server_obj_handle( handle );
1399                 req->tid_in = 0;
1400                 status = wine_server_call( req );
1401                 if (status == STATUS_SUCCESS)
1402                 {
1403                     BOOLEAN last = reply->last;
1404                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1405                     if (ret_len) *ret_len = min( length, sizeof(last) );
1406                 }
1407             }
1408             SERVER_END_REQ;
1409             return status;
1410         }
1411     case ThreadPriority:
1412     case ThreadBasePriority:
1413     case ThreadImpersonationToken:
1414     case ThreadEnableAlignmentFaultFixup:
1415     case ThreadEventPair_Reusable:
1416     case ThreadQuerySetWin32StartAddress:
1417     case ThreadZeroTlsCell:
1418     case ThreadPerformanceCount:
1419     case ThreadIdealProcessor:
1420     case ThreadPriorityBoost:
1421     case ThreadSetTlsArrayAddress:
1422     case ThreadIsIoPending:
1423     default:
1424         FIXME( "info class %d not supported yet\n", class );
1425         return STATUS_NOT_IMPLEMENTED;
1426     }
1427 }
1428
1429
1430 /******************************************************************************
1431  *              NtSetInformationThread  (NTDLL.@)
1432  *              ZwSetInformationThread  (NTDLL.@)
1433  */
1434 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1435                                         LPCVOID data, ULONG length )
1436 {
1437     NTSTATUS status;
1438     switch(class)
1439     {
1440     case ThreadZeroTlsCell:
1441         if (handle == GetCurrentThread())
1442         {
1443             LIST_ENTRY *entry;
1444             DWORD index;
1445
1446             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1447             index = *(const DWORD *)data;
1448             if (index < TLS_MINIMUM_AVAILABLE)
1449             {
1450                 RtlAcquirePebLock();
1451                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1452                 {
1453                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1454                     teb->TlsSlots[index] = 0;
1455                 }
1456                 RtlReleasePebLock();
1457             }
1458             else
1459             {
1460                 index -= TLS_MINIMUM_AVAILABLE;
1461                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1462                     return STATUS_INVALID_PARAMETER;
1463                 RtlAcquirePebLock();
1464                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1465                 {
1466                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1467                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1468                 }
1469                 RtlReleasePebLock();
1470             }
1471             return STATUS_SUCCESS;
1472         }
1473         FIXME( "ZeroTlsCell not supported on other threads\n" );
1474         return STATUS_NOT_IMPLEMENTED;
1475
1476     case ThreadImpersonationToken:
1477         {
1478             const HANDLE *phToken = data;
1479             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1480             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1481             SERVER_START_REQ( set_thread_info )
1482             {
1483                 req->handle   = wine_server_obj_handle( handle );
1484                 req->token    = wine_server_obj_handle( *phToken );
1485                 req->mask     = SET_THREAD_INFO_TOKEN;
1486                 status = wine_server_call( req );
1487             }
1488             SERVER_END_REQ;
1489         }
1490         return status;
1491     case ThreadBasePriority:
1492         {
1493             const DWORD *pprio = data;
1494             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1495             SERVER_START_REQ( set_thread_info )
1496             {
1497                 req->handle   = wine_server_obj_handle( handle );
1498                 req->priority = *pprio;
1499                 req->mask     = SET_THREAD_INFO_PRIORITY;
1500                 status = wine_server_call( req );
1501             }
1502             SERVER_END_REQ;
1503         }
1504         return status;
1505     case ThreadAffinityMask:
1506         {
1507             const ULONG_PTR affinity_mask = ((ULONG_PTR)1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1508             const ULONG_PTR *paff = data;
1509             if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
1510             if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1511             SERVER_START_REQ( set_thread_info )
1512             {
1513                 req->handle   = wine_server_obj_handle( handle );
1514                 req->affinity = *paff;
1515                 req->mask     = SET_THREAD_INFO_AFFINITY;
1516                 status = wine_server_call( req );
1517             }
1518             SERVER_END_REQ;
1519         }
1520         return status;
1521     case ThreadBasicInformation:
1522     case ThreadTimes:
1523     case ThreadPriority:
1524     case ThreadDescriptorTableEntry:
1525     case ThreadEnableAlignmentFaultFixup:
1526     case ThreadEventPair_Reusable:
1527     case ThreadQuerySetWin32StartAddress:
1528     case ThreadPerformanceCount:
1529     case ThreadAmILastThread:
1530     case ThreadIdealProcessor:
1531     case ThreadPriorityBoost:
1532     case ThreadSetTlsArrayAddress:
1533     case ThreadIsIoPending:
1534     default:
1535         FIXME( "info class %d not supported yet\n", class );
1536         return STATUS_NOT_IMPLEMENTED;
1537     }
1538 }