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 <sys/types.h>
  26 #ifdef HAVE_SYS_MMAN_H
  27 #include <sys/mman.h>
  28 #endif
  29 #ifdef HAVE_SYS_TIMES_H
  30 #include <sys/times.h>
  31 #endif
  32
  33 #define NONAMELESSUNION
  34 #include "ntstatus.h"
  35 #define WIN32_NO_STATUS
  36 #include "thread.h"
  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 /* info passed to a starting thread */
  52 struct startup_info
  53 {
  54     struct wine_pthread_thread_info pthread_info;
  55     PRTL_THREAD_START_ROUTINE       entry_point;
  56     void                           *entry_arg;
  57 };
  58
  59 static PEB_LDR_DATA ldr;
  60 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  61 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  62 static RTL_BITMAP tls_bitmap;
  63 static RTL_BITMAP tls_expansion_bitmap;
  64 static LIST_ENTRY tls_links;
  65 static size_t sigstack_total_size;
  66 static ULONG sigstack_zero_bits;
  67
  68 struct wine_pthread_functions pthread_functions = { NULL };
  69
  70
  71 static RTL_CRITICAL_SECTION ldt_section;
  72 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  73 {
  74     0, 0, &ldt_section,
  75     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  76       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  77 };
  78 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  79 static sigset_t ldt_sigset;
  80
  81 /***********************************************************************
  82  *           locking for LDT routines
  83  */
  84 static void ldt_lock(void)
  85 {
  86     sigset_t sigset;
  87
  88     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
  89     RtlEnterCriticalSection( &ldt_section );
  90     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  91 }
  92
  93 static void ldt_unlock(void)
  94 {
  95     if (ldt_section.RecursionCount == 1)
  96     {
  97         sigset_t sigset = ldt_sigset;
  98         RtlLeaveCriticalSection( &ldt_section );
  99         pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 100     }
 101     else RtlLeaveCriticalSection( &ldt_section );
 102 }
 103
 104
 105 /***********************************************************************
 106  *           init_teb
 107  */
 108 static inline NTSTATUS init_teb( TEB *teb )
 109 {
 110     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 111     struct ntdll_thread_regs *thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 112
 113     teb->Tib.ExceptionList = (void *)~0UL;
 114     teb->Tib.StackBase     = (void *)~0UL;
 115     teb->Tib.Self          = &teb->Tib;
 116     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 117     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 118
 119     if (!(thread_regs->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 120     thread_data->request_fd = -1;
 121     thread_data->reply_fd   = -1;
 122     thread_data->wait_fd[0] = -1;
 123     thread_data->wait_fd[1] = -1;
 124
 125     return STATUS_SUCCESS;
 126 }
 127
 128
 129 /***********************************************************************
 130  *           fix_unicode_string
 131  *
 132  * Make sure the unicode string doesn't point beyond the end pointer
 133  */
 134 static inline void fix_unicode_string( UNICODE_STRING *str, char *end_ptr )
 135 {
 136     if ((char *)str->Buffer >= end_ptr)
 137     {
 138         str->Length = str->MaximumLength = 0;
 139         str->Buffer = NULL;
 140         return;
 141     }
 142     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 143     {
 144         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 145     }
 146     if (str->Length >= str->MaximumLength)
 147     {
 148         if (str->MaximumLength >= sizeof(WCHAR))
 149             str->Length = str->MaximumLength - sizeof(WCHAR);
 150         else
 151             str->Length = str->MaximumLength = 0;
 152     }
 153 }
 154
 155
 156 /***********************************************************************
 157  *           init_user_process_params
 158  *
 159  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 160  */
 161 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 162 {
 163     void *ptr;
 164     SIZE_T env_size;
 165     NTSTATUS status;
 166     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 167
 168     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 169                                       MEM_COMMIT, PAGE_READWRITE );
 170     if (status != STATUS_SUCCESS) return status;
 171
 172     params->AllocationSize = info_size;
 173     NtCurrentTeb()->Peb->ProcessParameters = params;
 174
 175     SERVER_START_REQ( get_startup_info )
 176     {
 177         wine_server_set_reply( req, params, info_size );
 178         if (!(status = wine_server_call( req )))
 179         {
 180             info_size = wine_server_reply_size( reply );
 181             *exe_file = reply->exe_file;
 182             params->hStdInput  = reply->hstdin;
 183             params->hStdOutput = reply->hstdout;
 184             params->hStdError  = reply->hstderr;
 185         }
 186     }
 187     SERVER_END_REQ;
 188     if (status != STATUS_SUCCESS) return status;
 189
 190     if (params->Size > info_size) params->Size = info_size;
 191
 192     /* make sure the strings are valid */
 193     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 194     fix_unicode_string( &params->DllPath, (char *)info_size );
 195     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 196     fix_unicode_string( &params->CommandLine, (char *)info_size );
 197     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 198     fix_unicode_string( &params->Desktop, (char *)info_size );
 199     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 200     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 201
 202     /* environment needs to be a separate memory block */
 203     env_size = info_size - params->Size;
 204     if (!env_size) env_size = 1;
 205     ptr = NULL;
 206     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 207                                       MEM_COMMIT, PAGE_READWRITE );
 208     if (status != STATUS_SUCCESS) return status;
 209     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 210     params->Environment = ptr;
 211
 212     RtlNormalizeProcessParams( params );
 213     return status;
 214 }
 215
 216
 217 /***********************************************************************
 218  *           thread_init
 219  *
 220  * Setup the initial thread.
 221  *
 222  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 223  */
 224 HANDLE thread_init(void)
 225 {
 226     PEB *peb;
 227     TEB *teb;
 228     void *addr;
 229     SIZE_T size, info_size;
 230     HANDLE exe_file = 0;
 231     LARGE_INTEGER now;
 232     struct ntdll_thread_data *thread_data;
 233     struct ntdll_thread_regs *thread_regs;
 234     struct wine_pthread_thread_info thread_info;
 235     static struct debug_info debug_info;  /* debug info for initial thread */
 236
 237     virtual_init();
 238
 239     /* reserve space for shared user data */
 240
 241     addr = (void *)0x7ffe0000;
 242     size = 0x10000;
 243     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 244     user_shared_data = addr;
 245
 246     /* allocate and initialize the PEB */
 247
 248     addr = NULL;
 249     size = sizeof(*peb);
 250     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 251                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 252     peb = addr;
 253
 254     peb->NumberOfProcessors = 1;
 255     peb->ProcessParameters  = &params;
 256     peb->TlsBitmap          = &tls_bitmap;
 257     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 258     peb->LdrData            = &ldr;
 259     params.CurrentDirectory.DosPath.Buffer = current_dir;
 260     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 261     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 262     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 263     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 264                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 265     InitializeListHead( &ldr.InLoadOrderModuleList );
 266     InitializeListHead( &ldr.InMemoryOrderModuleList );
 267     InitializeListHead( &ldr.InInitializationOrderModuleList );
 268     InitializeListHead( &tls_links );
 269
 270     /* allocate and initialize the initial TEB */
 271
 272     sigstack_total_size = get_signal_stack_total_size();
 273     while (1 << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 274     assert( 1 << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 275     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 276     thread_info.teb_size = sigstack_total_size;
 277
 278     addr = NULL;
 279     size = sigstack_total_size;
 280     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 281                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 282     teb = addr;
 283     teb->Peb = peb;
 284     thread_info.teb_size = size;
 285     init_teb( teb );
 286     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 287     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 288     thread_data->debug_info = &debug_info;
 289     InsertHeadList( &tls_links, &teb->TlsLinks );
 290
 291     thread_info.stack_base = NULL;
 292     thread_info.stack_size = 0;
 293     thread_info.teb_base   = teb;
 294     thread_info.teb_sel    = thread_regs->fs;
 295     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 296     pthread_functions.init_current_teb( &thread_info );
 297     pthread_functions.init_thread( &thread_info );
 298     virtual_init_threading();
 299
 300     debug_info.str_pos = debug_info.strings;
 301     debug_info.out_pos = debug_info.output;
 302     debug_init();
 303
 304     /* setup the server connection */
 305     server_init_process();
 306     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 307
 308     /* create the process heap */
 309     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 310     {
 311         MESSAGE( "wine: failed to create the process heap\n" );
 312         exit(1);
 313     }
 314
 315     /* allocate user parameters */
 316     if (info_size)
 317     {
 318         init_user_process_params( info_size, &exe_file );
 319     }
 320     else
 321     {
 322         /* This is wine specific: we have no parent (we're started from unix)
 323          * so, create a simple console with bare handles to unix stdio
 324          */
 325         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 326         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 327         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 328     }
 329
 330     /* initialize LDT locking */
 331     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 332
 333     /* initialize time values in user_shared_data */
 334     NtQuerySystemTime( &now );
 335     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 336     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 337     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 338     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 339     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 340     user_shared_data->TickCountMultiplier = 1 << 24;
 341
 342     return exe_file;
 343 }
 344
 345 typedef LONG (WINAPI *PUNHANDLED_EXCEPTION_FILTER)(PEXCEPTION_POINTERS);
 346 static PUNHANDLED_EXCEPTION_FILTER get_unhandled_exception_filter(void)
 347 {
 348     static PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter;
 349     static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
 350     UNICODE_STRING module_name;
 351     ANSI_STRING func_name;
 352     HMODULE kernel32_handle;
 353
 354     if (unhandled_exception_filter) return unhandled_exception_filter;
 355
 356     RtlInitUnicodeString(&module_name, kernel32W);
 357     RtlInitAnsiString( &func_name, "UnhandledExceptionFilter" );
 358
 359     if (LdrGetDllHandle( 0, 0, &module_name, &kernel32_handle ) == STATUS_SUCCESS)
 360         LdrGetProcedureAddress( kernel32_handle, &func_name, 0,
 361                                 (void **)&unhandled_exception_filter );
 362
 363     return unhandled_exception_filter;
 364 }
 365
 366 #ifdef __i386__
 367 /* wrapper for apps that don't declare the thread function correctly */
 368 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 369 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 370                   "pushl %ebp\n\t"
 371                   "movl %esp,%ebp\n\t"
 372                   "subl $4,%esp\n\t"
 373                   "pushl 12(%ebp)\n\t"
 374                   "movl 8(%ebp),%eax\n\t"
 375                   "call *%eax\n\t"
 376                   "leave\n\t"
 377                   "ret" );
 378 #else
 379 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 380 {
 381     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 382     return func( arg );
 383 }
 384 #endif
 385
 386 /***********************************************************************
 387  *           call_thread_func
 388  *
 389  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 390  */
 391 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 392 {
 393     DWORD exit_code;
 394     BOOL last;
 395
 396     MODULE_DllThreadAttach( NULL );
 397
 398     if (TRACE_ON(relay))
 399         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 400
 401     exit_code = call_thread_entry_point( rtl_func, arg );
 402
 403     /* send the exit code to the server */
 404     SERVER_START_REQ( terminate_thread )
 405     {
 406         req->handle    = GetCurrentThread();
 407         req->exit_code = exit_code;
 408         wine_server_call( req );
 409         last = reply->last;
 410     }
 411     SERVER_END_REQ;
 412
 413     if (last)
 414     {
 415         LdrShutdownProcess();
 416         exit( exit_code );
 417     }
 418     else
 419     {
 420         LdrShutdownThread();
 421         server_exit_thread( exit_code );
 422     }
 423 }
 424
 425
 426 /***********************************************************************
 427  *           start_thread
 428  *
 429  * Startup routine for a newly created thread.
 430  */
 431 static void start_thread( struct wine_pthread_thread_info *info )
 432 {
 433     TEB *teb = info->teb_base;
 434     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 435     struct startup_info *startup_info = (struct startup_info *)info;
 436     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 437     void *arg = startup_info->entry_arg;
 438     struct debug_info debug_info;
 439     SIZE_T size, page_size = getpagesize();
 440
 441     debug_info.str_pos = debug_info.strings;
 442     debug_info.out_pos = debug_info.output;
 443     thread_data->debug_info = &debug_info;
 444
 445     pthread_functions.init_current_teb( info );
 446     SIGNAL_Init();
 447     server_init_thread( info->pid, info->tid, func );
 448     pthread_functions.init_thread( info );
 449
 450     /* allocate a memory view for the stack */
 451     size = info->stack_size;
 452     teb->DeallocationStack = info->stack_base;
 453     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 454                              &size, MEM_SYSTEM, PAGE_READWRITE );
 455     /* limit is lower than base since the stack grows down */
 456     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 457     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 458
 459     /* setup the guard page */
 460     size = page_size;
 461     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 462
 463     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 464
 465     RtlAcquirePebLock();
 466     InsertHeadList( &tls_links, &teb->TlsLinks );
 467     RtlReleasePebLock();
 468
 469     /* NOTE: Windows does not have an exception handler around the call to
 470      * the thread attach. We do for ease of debugging */
 471     if (get_unhandled_exception_filter())
 472     {
 473         __TRY
 474         {
 475             call_thread_func( func, arg );
 476         }
 477         __EXCEPT(get_unhandled_exception_filter())
 478         {
 479             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 480         }
 481         __ENDTRY
 482     }
 483     else
 484         call_thread_func( func, arg );
 485 }
 486
 487
 488 /***********************************************************************
 489  *              RtlCreateUserThread   (NTDLL.@)
 490  */
 491 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 492                                      BOOLEAN suspended, PVOID stack_addr,
 493                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 494                                      PRTL_THREAD_START_ROUTINE start, void *param,
 495                                      HANDLE *handle_ptr, CLIENT_ID *id )
 496 {
 497     sigset_t sigset;
 498     struct ntdll_thread_data *thread_data;
 499     struct ntdll_thread_regs *thread_regs = NULL;
 500     struct startup_info *info = NULL;
 501     void *addr = NULL;
 502     HANDLE handle = 0;
 503     TEB *teb;
 504     DWORD tid = 0;
 505     int request_pipe[2];
 506     NTSTATUS status;
 507     SIZE_T size, page_size = getpagesize();
 508
 509     if (process != NtCurrentProcess())
 510     {
 511         apc_call_t call;
 512         apc_result_t result;
 513
 514         call.create_thread.type    = APC_CREATE_THREAD;
 515         call.create_thread.func    = start;
 516         call.create_thread.arg     = param;
 517         call.create_thread.reserve = stack_reserve;
 518         call.create_thread.commit  = stack_commit;
 519         call.create_thread.suspend = suspended;
 520         status = NTDLL_queue_process_apc( process, &call, &result );
 521         if (status != STATUS_SUCCESS) return status;
 522
 523         if (result.create_thread.status == STATUS_SUCCESS)
 524         {
 525             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 526             if (handle_ptr) *handle_ptr = result.create_thread.handle;
 527             else NtClose( result.create_thread.handle );
 528         }
 529         return result.create_thread.status;
 530     }
 531
 532     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 533     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 534     wine_server_send_fd( request_pipe[0] );
 535
 536     SERVER_START_REQ( new_thread )
 537     {
 538         req->access     = THREAD_ALL_ACCESS;
 539         req->attributes = 0;  /* FIXME */
 540         req->suspend    = suspended;
 541         req->request_fd = request_pipe[0];
 542         if (!(status = wine_server_call( req )))
 543         {
 544             handle = reply->handle;
 545             tid = reply->tid;
 546         }
 547         close( request_pipe[0] );
 548     }
 549     SERVER_END_REQ;
 550
 551     if (status)
 552     {
 553         close( request_pipe[1] );
 554         return status;
 555     }
 556
 557     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 558
 559     addr = NULL;
 560     size = sigstack_total_size;
 561     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 562                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 563         goto error;
 564     teb = addr;
 565     teb->Peb = NtCurrentTeb()->Peb;
 566     info = (struct startup_info *)(teb + 1);
 567     info->pthread_info.teb_size = size;
 568     if ((status = init_teb( teb ))) goto error;
 569
 570     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 571     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 572
 573     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 574     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 575     thread_data->request_fd  = request_pipe[1];
 576
 577     info->pthread_info.teb_base = teb;
 578     info->pthread_info.teb_sel  = thread_regs->fs;
 579
 580     /* inherit debug registers from parent thread */
 581     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 582     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 583     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 584     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 585     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 586     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 587
 588     if (!stack_reserve || !stack_commit)
 589     {
 590         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 591         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 592         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 593     }
 594     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 595     stack_reserve += page_size;  /* for the guard page */
 596     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 597     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 598
 599     info->pthread_info.stack_base = NULL;
 600     info->pthread_info.stack_size = stack_reserve;
 601     info->pthread_info.entry      = start_thread;
 602     info->entry_point             = start;
 603     info->entry_arg               = param;
 604
 605     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 606     {
 607         status = STATUS_NO_MEMORY;
 608         goto error;
 609     }
 610     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 611
 612     if (id) id->UniqueThread = ULongToHandle(tid);
 613     if (handle_ptr) *handle_ptr = handle;
 614     else NtClose( handle );
 615
 616     return STATUS_SUCCESS;
 617
 618 error:
 619     if (thread_regs) wine_ldt_free_fs( thread_regs->fs );
 620     if (addr)
 621     {
 622         SIZE_T size = 0;
 623         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 624     }
 625     if (handle) NtClose( handle );
 626     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 627     close( request_pipe[1] );
 628     return status;
 629 }
 630
 631
 632 /***********************************************************************
 633  *           RtlExitUserThread  (NTDLL.@)
 634  */
 635 void WINAPI RtlExitUserThread( ULONG status )
 636 {
 637     LdrShutdownThread();
 638     server_exit_thread( status );
 639 }
 640
 641
 642 /***********************************************************************
 643  *              NtOpenThread   (NTDLL.@)
 644  *              ZwOpenThread   (NTDLL.@)
 645  */
 646 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 647                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 648 {
 649     NTSTATUS ret;
 650
 651     SERVER_START_REQ( open_thread )
 652     {
 653         req->tid        = HandleToULong(id->UniqueThread);
 654         req->access     = access;
 655         req->attributes = attr ? attr->Attributes : 0;
 656         ret = wine_server_call( req );
 657         *handle = reply->handle;
 658     }
 659     SERVER_END_REQ;
 660     return ret;
 661 }
 662
 663
 664 /******************************************************************************
 665  *              NtSuspendThread   (NTDLL.@)
 666  *              ZwSuspendThread   (NTDLL.@)
 667  */
 668 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 669 {
 670     NTSTATUS ret;
 671
 672     SERVER_START_REQ( suspend_thread )
 673     {
 674         req->handle = handle;
 675         if (!(ret = wine_server_call( req ))) *count = reply->count;
 676     }
 677     SERVER_END_REQ;
 678     return ret;
 679 }
 680
 681
 682 /******************************************************************************
 683  *              NtResumeThread   (NTDLL.@)
 684  *              ZwResumeThread   (NTDLL.@)
 685  */
 686 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 687 {
 688     NTSTATUS ret;
 689
 690     SERVER_START_REQ( resume_thread )
 691     {
 692         req->handle = handle;
 693         if (!(ret = wine_server_call( req ))) *count = reply->count;
 694     }
 695     SERVER_END_REQ;
 696     return ret;
 697 }
 698
 699
 700 /******************************************************************************
 701  *              NtAlertResumeThread   (NTDLL.@)
 702  *              ZwAlertResumeThread   (NTDLL.@)
 703  */
 704 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 705 {
 706     FIXME( "stub: should alert thread %p\n", handle );
 707     return NtResumeThread( handle, count );
 708 }
 709
 710
 711 /******************************************************************************
 712  *              NtAlertThread   (NTDLL.@)
 713  *              ZwAlertThread   (NTDLL.@)
 714  */
 715 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 716 {
 717     FIXME( "stub: %p\n", handle );
 718     return STATUS_NOT_IMPLEMENTED;
 719 }
 720
 721
 722 /******************************************************************************
 723  *              NtTerminateThread  (NTDLL.@)
 724  *              ZwTerminateThread  (NTDLL.@)
 725  */
 726 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 727 {
 728     NTSTATUS ret;
 729     BOOL self, last;
 730
 731     SERVER_START_REQ( terminate_thread )
 732     {
 733         req->handle    = handle;
 734         req->exit_code = exit_code;
 735         ret = wine_server_call( req );
 736         self = !ret && reply->self;
 737         last = reply->last;
 738     }
 739     SERVER_END_REQ;
 740
 741     if (self)
 742     {
 743         if (last) exit( exit_code );
 744         else server_abort_thread( exit_code );
 745     }
 746     return ret;
 747 }
 748
 749
 750 /******************************************************************************
 751  *              NtQueueApcThread  (NTDLL.@)
 752  */
 753 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 754                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 755 {
 756     NTSTATUS ret;
 757     SERVER_START_REQ( queue_apc )
 758     {
 759         req->thread = handle;
 760         if (func)
 761         {
 762             req->call.type         = APC_USER;
 763             req->call.user.func    = func;
 764             req->call.user.args[0] = arg1;
 765             req->call.user.args[1] = arg2;
 766             req->call.user.args[2] = arg3;
 767         }
 768         else req->call.type = APC_NONE;  /* wake up only */
 769         ret = wine_server_call( req );
 770     }
 771     SERVER_END_REQ;
 772     return ret;
 773 }
 774
 775
 776 /***********************************************************************
 777  *              NtSetContextThread  (NTDLL.@)
 778  *              ZwSetContextThread  (NTDLL.@)
 779  */
 780 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 781 {
 782     NTSTATUS ret;
 783     DWORD dummy, i;
 784     BOOL self = FALSE;
 785
 786 #ifdef __i386__
 787     /* on i386 debug registers always require a server call */
 788     self = (handle == GetCurrentThread());
 789     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 790     {
 791         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 792         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 793                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 794                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 795     }
 796 #endif
 797
 798     if (!self)
 799     {
 800         SERVER_START_REQ( set_thread_context )
 801         {
 802             req->handle  = handle;
 803             req->flags   = context->ContextFlags;
 804             req->suspend = 0;
 805             wine_server_add_data( req, context, sizeof(*context) );
 806             ret = wine_server_call( req );
 807             self = reply->self;
 808         }
 809         SERVER_END_REQ;
 810
 811         if (ret == STATUS_PENDING)
 812         {
 813             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 814             {
 815                 for (i = 0; i < 100; i++)
 816                 {
 817                     SERVER_START_REQ( set_thread_context )
 818                     {
 819                         req->handle  = handle;
 820                         req->flags   = context->ContextFlags;
 821                         req->suspend = 0;
 822                         wine_server_add_data( req, context, sizeof(*context) );
 823                         ret = wine_server_call( req );
 824                     }
 825                     SERVER_END_REQ;
 826                     if (ret != STATUS_PENDING) break;
 827                     NtYieldExecution();
 828                 }
 829                 NtResumeThread( handle, &dummy );
 830             }
 831             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 832         }
 833
 834         if (ret) return ret;
 835     }
 836
 837     if (self) set_cpu_context( context );
 838     return STATUS_SUCCESS;
 839 }
 840
 841
 842 /* copy a context structure according to the flags */
 843 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 844 {
 845 #ifdef __i386__
 846     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 847     if (flags & CONTEXT_INTEGER)
 848     {
 849         to->Eax = from->Eax;
 850         to->Ebx = from->Ebx;
 851         to->Ecx = from->Ecx;
 852         to->Edx = from->Edx;
 853         to->Esi = from->Esi;
 854         to->Edi = from->Edi;
 855     }
 856     if (flags & CONTEXT_CONTROL)
 857     {
 858         to->Ebp    = from->Ebp;
 859         to->Esp    = from->Esp;
 860         to->Eip    = from->Eip;
 861         to->SegCs  = from->SegCs;
 862         to->SegSs  = from->SegSs;
 863         to->EFlags = from->EFlags;
 864     }
 865     if (flags & CONTEXT_SEGMENTS)
 866     {
 867         to->SegDs = from->SegDs;
 868         to->SegEs = from->SegEs;
 869         to->SegFs = from->SegFs;
 870         to->SegGs = from->SegGs;
 871     }
 872     if (flags & CONTEXT_DEBUG_REGISTERS)
 873     {
 874         to->Dr0 = from->Dr0;
 875         to->Dr1 = from->Dr1;
 876         to->Dr2 = from->Dr2;
 877         to->Dr3 = from->Dr3;
 878         to->Dr6 = from->Dr6;
 879         to->Dr7 = from->Dr7;
 880     }
 881     if (flags & CONTEXT_FLOATING_POINT)
 882     {
 883         to->FloatSave = from->FloatSave;
 884     }
 885 #elif defined(__x86_64__)
 886     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 887     if (flags & CONTEXT_CONTROL)
 888     {
 889         to->Rbp    = from->Rbp;
 890         to->Rip    = from->Rip;
 891         to->Rsp    = from->Rsp;
 892         to->SegCs  = from->SegCs;
 893         to->SegSs  = from->SegSs;
 894         to->EFlags = from->EFlags;
 895         to->MxCsr  = from->MxCsr;
 896     }
 897     if (flags & CONTEXT_INTEGER)
 898     {
 899         to->Rax = from->Rax;
 900         to->Rcx = from->Rcx;
 901         to->Rdx = from->Rdx;
 902         to->Rbx = from->Rbx;
 903         to->Rsi = from->Rsi;
 904         to->Rdi = from->Rdi;
 905         to->R8  = from->R8;
 906         to->R9  = from->R9;
 907         to->R10 = from->R10;
 908         to->R11 = from->R11;
 909         to->R12 = from->R12;
 910         to->R13 = from->R13;
 911         to->R14 = from->R14;
 912         to->R15 = from->R15;
 913     }
 914     if (flags & CONTEXT_SEGMENTS)
 915     {
 916         to->SegDs = from->SegDs;
 917         to->SegEs = from->SegEs;
 918         to->SegFs = from->SegFs;
 919         to->SegGs = from->SegGs;
 920     }
 921     if (flags & CONTEXT_FLOATING_POINT)
 922     {
 923         to->u.FltSave = from->u.FltSave;
 924     }
 925     if (flags & CONTEXT_DEBUG_REGISTERS)
 926     {
 927         to->Dr0 = from->Dr0;
 928         to->Dr1 = from->Dr1;
 929         to->Dr2 = from->Dr2;
 930         to->Dr3 = from->Dr3;
 931         to->Dr6 = from->Dr6;
 932         to->Dr7 = from->Dr7;
 933     }
 934 #elif defined(__sparc__)
 935     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 936     if (flags & CONTEXT_CONTROL)
 937     {
 938         to->psr = from->psr;
 939         to->pc  = from->pc;
 940         to->npc = from->npc;
 941         to->y   = from->y;
 942         to->wim = from->wim;
 943         to->tbr = from->tbr;
 944     }
 945     if (flags & CONTEXT_INTEGER)
 946     {
 947         to->g0 = from->g0;
 948         to->g1 = from->g1;
 949         to->g2 = from->g2;
 950         to->g3 = from->g3;
 951         to->g4 = from->g4;
 952         to->g5 = from->g5;
 953         to->g6 = from->g6;
 954         to->g7 = from->g7;
 955         to->o0 = from->o0;
 956         to->o1 = from->o1;
 957         to->o2 = from->o2;
 958         to->o3 = from->o3;
 959         to->o4 = from->o4;
 960         to->o5 = from->o5;
 961         to->o6 = from->o6;
 962         to->o7 = from->o7;
 963         to->l0 = from->l0;
 964         to->l1 = from->l1;
 965         to->l2 = from->l2;
 966         to->l3 = from->l3;
 967         to->l4 = from->l4;
 968         to->l5 = from->l5;
 969         to->l6 = from->l6;
 970         to->l7 = from->l7;
 971         to->i0 = from->i0;
 972         to->i1 = from->i1;
 973         to->i2 = from->i2;
 974         to->i3 = from->i3;
 975         to->i4 = from->i4;
 976         to->i5 = from->i5;
 977         to->i6 = from->i6;
 978         to->i7 = from->i7;
 979     }
 980     if (flags & CONTEXT_FLOATING_POINT)
 981     {
 982         /* FIXME */
 983     }
 984 #elif defined(__powerpc__)
 985     /* Has no CPU id */
 986     if (flags & CONTEXT_CONTROL)
 987     {
 988         to->Msr = from->Msr;
 989         to->Ctr = from->Ctr;
 990         to->Iar = from->Iar;
 991     }
 992     if (flags & CONTEXT_INTEGER)
 993     {
 994         to->Gpr0  = from->Gpr0;
 995         to->Gpr1  = from->Gpr1;
 996         to->Gpr2  = from->Gpr2;
 997         to->Gpr3  = from->Gpr3;
 998         to->Gpr4  = from->Gpr4;
 999         to->Gpr5  = from->Gpr5;
1000         to->Gpr6  = from->Gpr6;
1001         to->Gpr7  = from->Gpr7;
1002         to->Gpr8  = from->Gpr8;
1003         to->Gpr9  = from->Gpr9;
1004         to->Gpr10 = from->Gpr10;
1005         to->Gpr11 = from->Gpr11;
1006         to->Gpr12 = from->Gpr12;
1007         to->Gpr13 = from->Gpr13;
1008         to->Gpr14 = from->Gpr14;
1009         to->Gpr15 = from->Gpr15;
1010         to->Gpr16 = from->Gpr16;
1011         to->Gpr17 = from->Gpr17;
1012         to->Gpr18 = from->Gpr18;
1013         to->Gpr19 = from->Gpr19;
1014         to->Gpr20 = from->Gpr20;
1015         to->Gpr21 = from->Gpr21;
1016         to->Gpr22 = from->Gpr22;
1017         to->Gpr23 = from->Gpr23;
1018         to->Gpr24 = from->Gpr24;
1019         to->Gpr25 = from->Gpr25;
1020         to->Gpr26 = from->Gpr26;
1021         to->Gpr27 = from->Gpr27;
1022         to->Gpr28 = from->Gpr28;
1023         to->Gpr29 = from->Gpr29;
1024         to->Gpr30 = from->Gpr30;
1025         to->Gpr31 = from->Gpr31;
1026         to->Xer   = from->Xer;
1027         to->Cr    = from->Cr;
1028     }
1029     if (flags & CONTEXT_FLOATING_POINT)
1030     {
1031         to->Fpr0  = from->Fpr0;
1032         to->Fpr1  = from->Fpr1;
1033         to->Fpr2  = from->Fpr2;
1034         to->Fpr3  = from->Fpr3;
1035         to->Fpr4  = from->Fpr4;
1036         to->Fpr5  = from->Fpr5;
1037         to->Fpr6  = from->Fpr6;
1038         to->Fpr7  = from->Fpr7;
1039         to->Fpr8  = from->Fpr8;
1040         to->Fpr9  = from->Fpr9;
1041         to->Fpr10 = from->Fpr10;
1042         to->Fpr11 = from->Fpr11;
1043         to->Fpr12 = from->Fpr12;
1044         to->Fpr13 = from->Fpr13;
1045         to->Fpr14 = from->Fpr14;
1046         to->Fpr15 = from->Fpr15;
1047         to->Fpr16 = from->Fpr16;
1048         to->Fpr17 = from->Fpr17;
1049         to->Fpr18 = from->Fpr18;
1050         to->Fpr19 = from->Fpr19;
1051         to->Fpr20 = from->Fpr20;
1052         to->Fpr21 = from->Fpr21;
1053         to->Fpr22 = from->Fpr22;
1054         to->Fpr23 = from->Fpr23;
1055         to->Fpr24 = from->Fpr24;
1056         to->Fpr25 = from->Fpr25;
1057         to->Fpr26 = from->Fpr26;
1058         to->Fpr27 = from->Fpr27;
1059         to->Fpr28 = from->Fpr28;
1060         to->Fpr29 = from->Fpr29;
1061         to->Fpr30 = from->Fpr30;
1062         to->Fpr31 = from->Fpr31;
1063         to->Fpscr = from->Fpscr;
1064     }
1065 #else
1066 #error You must implement context copying for your CPU
1067 #endif
1068 }
1069
1070
1071 /***********************************************************************
1072  *              NtGetContextThread  (NTDLL.@)
1073  *              ZwGetContextThread  (NTDLL.@)
1074  */
1075 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1076 {
1077     NTSTATUS ret;
1078     CONTEXT ctx;
1079     DWORD dummy, i;
1080     DWORD needed_flags = context->ContextFlags;
1081     BOOL self = (handle == GetCurrentThread());
1082
1083 #ifdef __i386__
1084     /* on i386 debug registers always require a server call */
1085     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1086 #endif
1087
1088     if (!self)
1089     {
1090         SERVER_START_REQ( get_thread_context )
1091         {
1092             req->handle  = handle;
1093             req->flags   = context->ContextFlags;
1094             req->suspend = 0;
1095             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1096             ret = wine_server_call( req );
1097             self = reply->self;
1098         }
1099         SERVER_END_REQ;
1100
1101         if (ret == STATUS_PENDING)
1102         {
1103             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1104             {
1105                 for (i = 0; i < 100; i++)
1106                 {
1107                     SERVER_START_REQ( get_thread_context )
1108                     {
1109                         req->handle  = handle;
1110                         req->flags   = context->ContextFlags;
1111                         req->suspend = 0;
1112                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1113                         ret = wine_server_call( req );
1114                     }
1115                     SERVER_END_REQ;
1116                     if (ret != STATUS_PENDING) break;
1117                     NtYieldExecution();
1118                 }
1119                 NtResumeThread( handle, &dummy );
1120             }
1121             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1122         }
1123         if (ret) return ret;
1124         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1125         needed_flags &= ~ctx.ContextFlags;
1126     }
1127
1128     if (self)
1129     {
1130         if (needed_flags)
1131         {
1132             get_cpu_context( &ctx );
1133             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1134         }
1135 #ifdef __i386__
1136         /* update the cached version of the debug registers */
1137         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1138         {
1139             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1140             regs->dr0 = context->Dr0;
1141             regs->dr1 = context->Dr1;
1142             regs->dr2 = context->Dr2;
1143             regs->dr3 = context->Dr3;
1144             regs->dr6 = context->Dr6;
1145             regs->dr7 = context->Dr7;
1146         }
1147 #endif
1148     }
1149     return STATUS_SUCCESS;
1150 }
1151
1152
1153 /******************************************************************************
1154  *              NtQueryInformationThread  (NTDLL.@)
1155  *              ZwQueryInformationThread  (NTDLL.@)
1156  */
1157 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1158                                           void *data, ULONG length, ULONG *ret_len )
1159 {
1160     NTSTATUS status;
1161
1162     switch(class)
1163     {
1164     case ThreadBasicInformation:
1165         {
1166             THREAD_BASIC_INFORMATION info;
1167
1168             SERVER_START_REQ( get_thread_info )
1169             {
1170                 req->handle = handle;
1171                 req->tid_in = 0;
1172                 if (!(status = wine_server_call( req )))
1173                 {
1174                     info.ExitStatus             = reply->exit_code;
1175                     info.TebBaseAddress         = reply->teb;
1176                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
1177                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
1178                     info.AffinityMask           = reply->affinity;
1179                     info.Priority               = reply->priority;
1180                     info.BasePriority           = reply->priority;  /* FIXME */
1181                 }
1182             }
1183             SERVER_END_REQ;
1184             if (status == STATUS_SUCCESS)
1185             {
1186                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1187                 if (ret_len) *ret_len = min( length, sizeof(info) );
1188             }
1189         }
1190         return status;
1191     case ThreadTimes:
1192         {
1193             KERNEL_USER_TIMES   kusrt;
1194             /* We need to do a server call to get the creation time or exit time */
1195             /* This works on any thread */
1196             SERVER_START_REQ( get_thread_info )
1197             {
1198                 req->handle = handle;
1199                 req->tid_in = 0;
1200                 status = wine_server_call( req );
1201                 if (status == STATUS_SUCCESS)
1202                 {
1203                     kusrt.CreateTime.QuadPart = reply->creation_time;
1204                     kusrt.ExitTime.QuadPart = reply->exit_time;
1205                 }
1206             }
1207             SERVER_END_REQ;
1208             if (status == STATUS_SUCCESS)
1209             {
1210                 /* We call times(2) for kernel time or user time */
1211                 /* We can only (portably) do this for the current thread */
1212                 if (handle == GetCurrentThread())
1213                 {
1214                     struct tms time_buf;
1215                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1216
1217                     times(&time_buf);
1218                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1219                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1220                 }
1221                 else
1222                 {
1223                     kusrt.KernelTime.QuadPart = 0;
1224                     kusrt.UserTime.QuadPart = 0;
1225                     FIXME("Cannot get kerneltime or usertime of other threads\n");
1226                 }
1227                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1228                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1229             }
1230         }
1231         return status;
1232     case ThreadDescriptorTableEntry:
1233         {
1234 #ifdef __i386__
1235             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1236             if (length < sizeof(*tdi))
1237                 status = STATUS_INFO_LENGTH_MISMATCH;
1238             else if (!(tdi->Selector & 4))  /* GDT selector */
1239             {
1240                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1241                 status = STATUS_SUCCESS;
1242                 if (!sel)  /* null selector */
1243                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1244                 else
1245                 {
1246                     tdi->Entry.BaseLow                   = 0;
1247                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1248                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1249                     tdi->Entry.LimitLow                  = 0xffff;
1250                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1251                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1252                     tdi->Entry.HighWord.Bits.Sys         = 0;
1253                     tdi->Entry.HighWord.Bits.Pres        = 1;
1254                     tdi->Entry.HighWord.Bits.Granularity = 1;
1255                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1256                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1257                     /* it has to be one of the system GDT selectors */
1258                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1259                     {
1260                         if (sel == (wine_get_cs() & ~3))
1261                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1262                         else status = STATUS_ACCESS_DENIED;
1263                     }
1264                 }
1265             }
1266             else
1267             {
1268                 SERVER_START_REQ( get_selector_entry )
1269                 {
1270                     req->handle = handle;
1271                     req->entry = tdi->Selector >> 3;
1272                     status = wine_server_call( req );
1273                     if (!status)
1274                     {
1275                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1276                             status = STATUS_ACCESS_VIOLATION;
1277                         else
1278                         {
1279                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1280                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1281                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1282                         }
1283                     }
1284                 }
1285                 SERVER_END_REQ;
1286             }
1287             if (status == STATUS_SUCCESS && ret_len)
1288                 /* yes, that's a bit strange, but it's the way it is */
1289                 *ret_len = sizeof(LDT_ENTRY);
1290 #else
1291             status = STATUS_NOT_IMPLEMENTED;
1292 #endif
1293             return status;
1294         }
1295     case ThreadAmILastThread:
1296         {
1297             SERVER_START_REQ(get_thread_info)
1298             {
1299                 req->handle = handle;
1300                 req->tid_in = 0;
1301                 status = wine_server_call( req );
1302                 if (status == STATUS_SUCCESS)
1303                 {
1304                     BOOLEAN last = reply->last;
1305                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1306                     if (ret_len) *ret_len = min( length, sizeof(last) );
1307                 }
1308             }
1309             SERVER_END_REQ;
1310             return status;
1311         }
1312     case ThreadPriority:
1313     case ThreadBasePriority:
1314     case ThreadAffinityMask:
1315     case ThreadImpersonationToken:
1316     case ThreadEnableAlignmentFaultFixup:
1317     case ThreadEventPair_Reusable:
1318     case ThreadQuerySetWin32StartAddress:
1319     case ThreadZeroTlsCell:
1320     case ThreadPerformanceCount:
1321     case ThreadIdealProcessor:
1322     case ThreadPriorityBoost:
1323     case ThreadSetTlsArrayAddress:
1324     case ThreadIsIoPending:
1325     default:
1326         FIXME( "info class %d not supported yet\n", class );
1327         return STATUS_NOT_IMPLEMENTED;
1328     }
1329 }
1330
1331
1332 /******************************************************************************
1333  *              NtSetInformationThread  (NTDLL.@)
1334  *              ZwSetInformationThread  (NTDLL.@)
1335  */
1336 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1337                                         LPCVOID data, ULONG length )
1338 {
1339     NTSTATUS status;
1340     switch(class)
1341     {
1342     case ThreadZeroTlsCell:
1343         if (handle == GetCurrentThread())
1344         {
1345             LIST_ENTRY *entry;
1346             DWORD index;
1347
1348             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1349             index = *(const DWORD *)data;
1350             if (index < TLS_MINIMUM_AVAILABLE)
1351             {
1352                 RtlAcquirePebLock();
1353                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1354                 {
1355                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1356                     teb->TlsSlots[index] = 0;
1357                 }
1358                 RtlReleasePebLock();
1359             }
1360             else
1361             {
1362                 index -= TLS_MINIMUM_AVAILABLE;
1363                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1364                     return STATUS_INVALID_PARAMETER;
1365                 RtlAcquirePebLock();
1366                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1367                 {
1368                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1369                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1370                 }
1371                 RtlReleasePebLock();
1372             }
1373             return STATUS_SUCCESS;
1374         }
1375         FIXME( "ZeroTlsCell not supported on other threads\n" );
1376         return STATUS_NOT_IMPLEMENTED;
1377
1378     case ThreadImpersonationToken:
1379         {
1380             const HANDLE *phToken = data;
1381             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1382             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1383             SERVER_START_REQ( set_thread_info )
1384             {
1385                 req->handle   = handle;
1386                 req->token    = *phToken;
1387                 req->mask     = SET_THREAD_INFO_TOKEN;
1388                 status = wine_server_call( req );
1389             }
1390             SERVER_END_REQ;
1391         }
1392         return status;
1393     case ThreadBasePriority:
1394         {
1395             const DWORD *pprio = data;
1396             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1397             SERVER_START_REQ( set_thread_info )
1398             {
1399                 req->handle   = handle;
1400                 req->priority = *pprio;
1401                 req->mask     = SET_THREAD_INFO_PRIORITY;
1402                 status = wine_server_call( req );
1403             }
1404             SERVER_END_REQ;
1405         }
1406         return status;
1407     case ThreadAffinityMask:
1408         {
1409             const DWORD *paff = data;
1410             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1411             SERVER_START_REQ( set_thread_info )
1412             {
1413                 req->handle   = handle;
1414                 req->affinity = *paff;
1415                 req->mask     = SET_THREAD_INFO_AFFINITY;
1416                 status = wine_server_call( req );
1417             }
1418             SERVER_END_REQ;
1419         }
1420         return status;
1421     case ThreadBasicInformation:
1422     case ThreadTimes:
1423     case ThreadPriority:
1424     case ThreadDescriptorTableEntry:
1425     case ThreadEnableAlignmentFaultFixup:
1426     case ThreadEventPair_Reusable:
1427     case ThreadQuerySetWin32StartAddress:
1428     case ThreadPerformanceCount:
1429     case ThreadAmILastThread:
1430     case ThreadIdealProcessor:
1431     case ThreadPriorityBoost:
1432     case ThreadSetTlsArrayAddress:
1433     case ThreadIsIoPending:
1434     default:
1435         FIXME( "info class %d not supported yet\n", class );
1436         return STATUS_NOT_IMPLEMENTED;
1437     }
1438 }
1439
1440
1441 /**********************************************************************
1442  *           NtCurrentTeb   (NTDLL.@)
1443  */
1444 #if defined(__i386__) && defined(__GNUC__)
1445
1446 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1447
1448 #elif defined(__i386__) && defined(_MSC_VER)
1449
1450 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1451
1452 #else
1453
1454 /**********************************************************************/
1455
1456 TEB * WINAPI NtCurrentTeb(void)
1457 {
1458     return pthread_functions.get_current_teb();
1459 }
1460
1461 #endif  /* __i386__ */