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
  71 struct wine_pthread_functions pthread_functions = { NULL };
  72
  73
  74 static RTL_CRITICAL_SECTION ldt_section;
  75 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  76 {
  77     0, 0, &ldt_section,
  78     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  79       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  80 };
  81 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  82 static sigset_t ldt_sigset;
  83
  84 /***********************************************************************
  85  *           locking for LDT routines
  86  */
  87 static void ldt_lock(void)
  88 {
  89     sigset_t sigset;
  90
  91     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
  92     RtlEnterCriticalSection( &ldt_section );
  93     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  94 }
  95
  96 static void ldt_unlock(void)
  97 {
  98     if (ldt_section.RecursionCount == 1)
  99     {
 100         sigset_t sigset = ldt_sigset;
 101         RtlLeaveCriticalSection( &ldt_section );
 102         pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 103     }
 104     else RtlLeaveCriticalSection( &ldt_section );
 105 }
 106
 107
 108 /***********************************************************************
 109  *           init_teb
 110  */
 111 static inline NTSTATUS init_teb( TEB *teb )
 112 {
 113     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 114
 115     teb->Tib.ExceptionList = (void *)~0UL;
 116     teb->Tib.StackBase     = (void *)~0UL;
 117     teb->Tib.Self          = &teb->Tib;
 118     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 119     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 120
 121     if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 122     thread_data->request_fd = -1;
 123     thread_data->reply_fd   = -1;
 124     thread_data->wait_fd[0] = -1;
 125     thread_data->wait_fd[1] = -1;
 126
 127     return STATUS_SUCCESS;
 128 }
 129
 130
 131 /***********************************************************************
 132  *           fix_unicode_string
 133  *
 134  * Make sure the unicode string doesn't point beyond the end pointer
 135  */
 136 static inline void fix_unicode_string( UNICODE_STRING *str, const char *end_ptr )
 137 {
 138     if ((char *)str->Buffer >= end_ptr)
 139     {
 140         str->Length = str->MaximumLength = 0;
 141         str->Buffer = NULL;
 142         return;
 143     }
 144     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 145     {
 146         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 147     }
 148     if (str->Length >= str->MaximumLength)
 149     {
 150         if (str->MaximumLength >= sizeof(WCHAR))
 151             str->Length = str->MaximumLength - sizeof(WCHAR);
 152         else
 153             str->Length = str->MaximumLength = 0;
 154     }
 155 }
 156
 157
 158 /***********************************************************************
 159  *           init_user_process_params
 160  *
 161  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 162  */
 163 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 164 {
 165     void *ptr;
 166     SIZE_T env_size;
 167     NTSTATUS status;
 168     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 169
 170     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 171                                       MEM_COMMIT, PAGE_READWRITE );
 172     if (status != STATUS_SUCCESS) return status;
 173
 174     params->AllocationSize = info_size;
 175     NtCurrentTeb()->Peb->ProcessParameters = params;
 176
 177     SERVER_START_REQ( get_startup_info )
 178     {
 179         wine_server_set_reply( req, params, info_size );
 180         if (!(status = wine_server_call( req )))
 181         {
 182             info_size = wine_server_reply_size( reply );
 183             *exe_file = reply->exe_file;
 184             params->hStdInput  = reply->hstdin;
 185             params->hStdOutput = reply->hstdout;
 186             params->hStdError  = reply->hstderr;
 187         }
 188     }
 189     SERVER_END_REQ;
 190     if (status != STATUS_SUCCESS) return status;
 191
 192     if (params->Size > info_size) params->Size = info_size;
 193
 194     /* make sure the strings are valid */
 195     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 196     fix_unicode_string( &params->DllPath, (char *)info_size );
 197     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 198     fix_unicode_string( &params->CommandLine, (char *)info_size );
 199     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 200     fix_unicode_string( &params->Desktop, (char *)info_size );
 201     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 202     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 203
 204     /* environment needs to be a separate memory block */
 205     env_size = info_size - params->Size;
 206     if (!env_size) env_size = 1;
 207     ptr = NULL;
 208     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 209                                       MEM_COMMIT, PAGE_READWRITE );
 210     if (status != STATUS_SUCCESS) return status;
 211     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 212     params->Environment = ptr;
 213
 214     RtlNormalizeProcessParams( params );
 215     return status;
 216 }
 217
 218
 219 /***********************************************************************
 220  *           thread_init
 221  *
 222  * Setup the initial thread.
 223  *
 224  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 225  */
 226 HANDLE thread_init(void)
 227 {
 228     PEB *peb;
 229     TEB *teb;
 230     void *addr;
 231     SIZE_T size, info_size;
 232     HANDLE exe_file = 0;
 233     LARGE_INTEGER now;
 234     struct ntdll_thread_data *thread_data;
 235     struct wine_pthread_thread_info thread_info;
 236     static struct debug_info debug_info;  /* debug info for initial thread */
 237
 238     virtual_init();
 239
 240     /* reserve space for shared user data */
 241
 242     addr = (void *)0x7ffe0000;
 243     size = 0x10000;
 244     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 245     user_shared_data = addr;
 246
 247     /* allocate and initialize the PEB */
 248
 249     addr = NULL;
 250     size = sizeof(*peb);
 251     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 252                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 253     peb = addr;
 254
 255     peb->NumberOfProcessors = 1;
 256     peb->ProcessParameters  = &params;
 257     peb->TlsBitmap          = &tls_bitmap;
 258     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 259     peb->FlsBitmap          = &fls_bitmap;
 260     peb->LdrData            = &ldr;
 261     params.CurrentDirectory.DosPath.Buffer = current_dir;
 262     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 263     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 264     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 265     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 266                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 267     RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
 268     InitializeListHead( &peb->FlsListHead );
 269     InitializeListHead( &ldr.InLoadOrderModuleList );
 270     InitializeListHead( &ldr.InMemoryOrderModuleList );
 271     InitializeListHead( &ldr.InInitializationOrderModuleList );
 272     InitializeListHead( &tls_links );
 273
 274     /* allocate and initialize the initial TEB */
 275
 276     sigstack_total_size = get_signal_stack_total_size();
 277     while (1 << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 278     assert( 1 << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 279     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 280     thread_info.teb_size = sigstack_total_size;
 281
 282     addr = NULL;
 283     size = sigstack_total_size;
 284     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 285                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 286     teb = addr;
 287     teb->Peb = peb;
 288     thread_info.teb_size = size;
 289     init_teb( teb );
 290     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 291     thread_data->debug_info = &debug_info;
 292     InsertHeadList( &tls_links, &teb->TlsLinks );
 293
 294     thread_info.stack_base = NULL;
 295     thread_info.stack_size = 0;
 296     thread_info.teb_base   = teb;
 297     thread_info.teb_sel    = thread_data->fs;
 298     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 299     pthread_functions.init_current_teb( &thread_info );
 300     pthread_functions.init_thread( &thread_info );
 301     virtual_init_threading();
 302
 303     debug_info.str_pos = debug_info.strings;
 304     debug_info.out_pos = debug_info.output;
 305     debug_init();
 306
 307     /* setup the server connection */
 308     server_init_process();
 309     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 310
 311     /* create the process heap */
 312     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 313     {
 314         MESSAGE( "wine: failed to create the process heap\n" );
 315         exit(1);
 316     }
 317
 318     /* allocate user parameters */
 319     if (info_size)
 320     {
 321         init_user_process_params( info_size, &exe_file );
 322     }
 323     else
 324     {
 325         /* This is wine specific: we have no parent (we're started from unix)
 326          * so, create a simple console with bare handles to unix stdio
 327          */
 328         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 329         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 330         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 331     }
 332
 333     /* initialize LDT locking */
 334     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 335
 336     /* initialize time values in user_shared_data */
 337     NtQuerySystemTime( &now );
 338     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 339     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 340     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 341     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 342     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 343     user_shared_data->TickCountMultiplier = 1 << 24;
 344
 345     return exe_file;
 346 }
 347
 348 #ifdef __i386__
 349 /* wrapper for apps that don't declare the thread function correctly */
 350 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 351 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 352                   "pushl %ebp\n\t"
 353                   "movl %esp,%ebp\n\t"
 354                   "subl $4,%esp\n\t"
 355                   "pushl 12(%ebp)\n\t"
 356                   "movl 8(%ebp),%eax\n\t"
 357                   "call *%eax\n\t"
 358                   "leave\n\t"
 359                   "ret" );
 360 #else
 361 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 362 {
 363     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 364     return func( arg );
 365 }
 366 #endif
 367
 368 /***********************************************************************
 369  *           call_thread_func
 370  *
 371  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 372  */
 373 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 374 {
 375     DWORD exit_code;
 376     BOOL last;
 377
 378     MODULE_DllThreadAttach( NULL );
 379
 380     if (TRACE_ON(relay))
 381         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 382
 383     exit_code = call_thread_entry_point( rtl_func, arg );
 384
 385     /* send the exit code to the server */
 386     SERVER_START_REQ( terminate_thread )
 387     {
 388         req->handle    = GetCurrentThread();
 389         req->exit_code = exit_code;
 390         wine_server_call( req );
 391         last = reply->last;
 392     }
 393     SERVER_END_REQ;
 394
 395     if (last)
 396     {
 397         LdrShutdownProcess();
 398         exit( exit_code );
 399     }
 400     else
 401     {
 402         LdrShutdownThread();
 403         server_exit_thread( exit_code );
 404     }
 405 }
 406
 407
 408 /***********************************************************************
 409  *           start_thread
 410  *
 411  * Startup routine for a newly created thread.
 412  */
 413 static void start_thread( struct wine_pthread_thread_info *info )
 414 {
 415     TEB *teb = info->teb_base;
 416     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 417     struct startup_info *startup_info = (struct startup_info *)info;
 418     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 419     void *arg = startup_info->entry_arg;
 420     struct debug_info debug_info;
 421     SIZE_T size, page_size = getpagesize();
 422
 423     debug_info.str_pos = debug_info.strings;
 424     debug_info.out_pos = debug_info.output;
 425     thread_data->debug_info = &debug_info;
 426
 427     pthread_functions.init_current_teb( info );
 428     SIGNAL_Init();
 429     server_init_thread( info->pid, info->tid, func );
 430     pthread_functions.init_thread( info );
 431
 432     /* allocate a memory view for the stack */
 433     size = info->stack_size;
 434     teb->DeallocationStack = info->stack_base;
 435     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 436                              &size, MEM_SYSTEM, PAGE_READWRITE );
 437     /* limit is lower than base since the stack grows down */
 438     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 439     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 440
 441     /* setup the guard page */
 442     size = page_size;
 443     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 444
 445     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 446
 447     RtlAcquirePebLock();
 448     InsertHeadList( &tls_links, &teb->TlsLinks );
 449     RtlReleasePebLock();
 450
 451     /* NOTE: Windows does not have an exception handler around the call to
 452      * the thread attach. We do for ease of debugging */
 453     if (unhandled_exception_filter)
 454     {
 455         __TRY
 456         {
 457             call_thread_func( func, arg );
 458         }
 459         __EXCEPT(unhandled_exception_filter)
 460         {
 461             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 462         }
 463         __ENDTRY
 464     }
 465     else
 466         call_thread_func( func, arg );
 467 }
 468
 469
 470 /***********************************************************************
 471  *              RtlCreateUserThread   (NTDLL.@)
 472  */
 473 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 474                                      BOOLEAN suspended, PVOID stack_addr,
 475                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 476                                      PRTL_THREAD_START_ROUTINE start, void *param,
 477                                      HANDLE *handle_ptr, CLIENT_ID *id )
 478 {
 479     sigset_t sigset;
 480     struct ntdll_thread_data *thread_data = NULL;
 481     struct ntdll_thread_regs *thread_regs;
 482     struct startup_info *info = NULL;
 483     void *addr = NULL;
 484     HANDLE handle = 0;
 485     TEB *teb;
 486     DWORD tid = 0;
 487     int request_pipe[2];
 488     NTSTATUS status;
 489     SIZE_T size, page_size = getpagesize();
 490
 491     if (process != NtCurrentProcess())
 492     {
 493         apc_call_t call;
 494         apc_result_t result;
 495
 496         memset( &call, 0, sizeof(call) );
 497
 498         call.create_thread.type    = APC_CREATE_THREAD;
 499         call.create_thread.func    = start;
 500         call.create_thread.arg     = param;
 501         call.create_thread.reserve = stack_reserve;
 502         call.create_thread.commit  = stack_commit;
 503         call.create_thread.suspend = suspended;
 504         status = NTDLL_queue_process_apc( process, &call, &result );
 505         if (status != STATUS_SUCCESS) return status;
 506
 507         if (result.create_thread.status == STATUS_SUCCESS)
 508         {
 509             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 510             if (handle_ptr) *handle_ptr = result.create_thread.handle;
 511             else NtClose( result.create_thread.handle );
 512         }
 513         return result.create_thread.status;
 514     }
 515
 516     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 517     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 518     wine_server_send_fd( request_pipe[0] );
 519
 520     SERVER_START_REQ( new_thread )
 521     {
 522         req->access     = THREAD_ALL_ACCESS;
 523         req->attributes = 0;  /* FIXME */
 524         req->suspend    = suspended;
 525         req->request_fd = request_pipe[0];
 526         if (!(status = wine_server_call( req )))
 527         {
 528             handle = reply->handle;
 529             tid = reply->tid;
 530         }
 531         close( request_pipe[0] );
 532     }
 533     SERVER_END_REQ;
 534
 535     if (status)
 536     {
 537         close( request_pipe[1] );
 538         return status;
 539     }
 540
 541     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 542
 543     addr = NULL;
 544     size = sigstack_total_size;
 545     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 546                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 547         goto error;
 548     teb = addr;
 549     teb->Peb = NtCurrentTeb()->Peb;
 550     info = (struct startup_info *)(teb + 1);
 551     info->pthread_info.teb_size = size;
 552     if ((status = init_teb( teb ))) goto error;
 553
 554     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 555     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 556
 557     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 558     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 559     thread_data->request_fd  = request_pipe[1];
 560
 561     info->pthread_info.teb_base = teb;
 562     info->pthread_info.teb_sel  = thread_data->fs;
 563
 564     /* inherit debug registers from parent thread */
 565     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 566     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 567     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 568     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 569     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 570     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 571
 572     if (!stack_reserve || !stack_commit)
 573     {
 574         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 575         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 576         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 577     }
 578     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 579     stack_reserve += page_size;  /* for the guard page */
 580     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 581     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 582
 583     info->pthread_info.stack_base = NULL;
 584     info->pthread_info.stack_size = stack_reserve;
 585     info->pthread_info.entry      = start_thread;
 586     info->entry_point             = start;
 587     info->entry_arg               = param;
 588
 589     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 590     {
 591         status = STATUS_NO_MEMORY;
 592         goto error;
 593     }
 594     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 595
 596     if (id) id->UniqueThread = ULongToHandle(tid);
 597     if (handle_ptr) *handle_ptr = handle;
 598     else NtClose( handle );
 599
 600     return STATUS_SUCCESS;
 601
 602 error:
 603     if (thread_data) wine_ldt_free_fs( thread_data->fs );
 604     if (addr)
 605     {
 606         SIZE_T size = 0;
 607         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 608     }
 609     if (handle) NtClose( handle );
 610     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 611     close( request_pipe[1] );
 612     return status;
 613 }
 614
 615
 616 /***********************************************************************
 617  *           RtlExitUserThread  (NTDLL.@)
 618  */
 619 void WINAPI RtlExitUserThread( ULONG status )
 620 {
 621     LdrShutdownThread();
 622     server_exit_thread( status );
 623 }
 624
 625
 626 /***********************************************************************
 627  *              NtOpenThread   (NTDLL.@)
 628  *              ZwOpenThread   (NTDLL.@)
 629  */
 630 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 631                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 632 {
 633     NTSTATUS ret;
 634
 635     SERVER_START_REQ( open_thread )
 636     {
 637         req->tid        = HandleToULong(id->UniqueThread);
 638         req->access     = access;
 639         req->attributes = attr ? attr->Attributes : 0;
 640         ret = wine_server_call( req );
 641         *handle = reply->handle;
 642     }
 643     SERVER_END_REQ;
 644     return ret;
 645 }
 646
 647
 648 /******************************************************************************
 649  *              NtSuspendThread   (NTDLL.@)
 650  *              ZwSuspendThread   (NTDLL.@)
 651  */
 652 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 653 {
 654     NTSTATUS ret;
 655
 656     SERVER_START_REQ( suspend_thread )
 657     {
 658         req->handle = handle;
 659         if (!(ret = wine_server_call( req ))) *count = reply->count;
 660     }
 661     SERVER_END_REQ;
 662     return ret;
 663 }
 664
 665
 666 /******************************************************************************
 667  *              NtResumeThread   (NTDLL.@)
 668  *              ZwResumeThread   (NTDLL.@)
 669  */
 670 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 671 {
 672     NTSTATUS ret;
 673
 674     SERVER_START_REQ( resume_thread )
 675     {
 676         req->handle = handle;
 677         if (!(ret = wine_server_call( req ))) *count = reply->count;
 678     }
 679     SERVER_END_REQ;
 680     return ret;
 681 }
 682
 683
 684 /******************************************************************************
 685  *              NtAlertResumeThread   (NTDLL.@)
 686  *              ZwAlertResumeThread   (NTDLL.@)
 687  */
 688 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 689 {
 690     FIXME( "stub: should alert thread %p\n", handle );
 691     return NtResumeThread( handle, count );
 692 }
 693
 694
 695 /******************************************************************************
 696  *              NtAlertThread   (NTDLL.@)
 697  *              ZwAlertThread   (NTDLL.@)
 698  */
 699 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 700 {
 701     FIXME( "stub: %p\n", handle );
 702     return STATUS_NOT_IMPLEMENTED;
 703 }
 704
 705
 706 /******************************************************************************
 707  *              NtTerminateThread  (NTDLL.@)
 708  *              ZwTerminateThread  (NTDLL.@)
 709  */
 710 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 711 {
 712     NTSTATUS ret;
 713     BOOL self, last;
 714
 715     SERVER_START_REQ( terminate_thread )
 716     {
 717         req->handle    = handle;
 718         req->exit_code = exit_code;
 719         ret = wine_server_call( req );
 720         self = !ret && reply->self;
 721         last = reply->last;
 722     }
 723     SERVER_END_REQ;
 724
 725     if (self)
 726     {
 727         if (last) exit( exit_code );
 728         else server_abort_thread( exit_code );
 729     }
 730     return ret;
 731 }
 732
 733
 734 /******************************************************************************
 735  *              NtQueueApcThread  (NTDLL.@)
 736  */
 737 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 738                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 739 {
 740     NTSTATUS ret;
 741     SERVER_START_REQ( queue_apc )
 742     {
 743         req->thread = handle;
 744         if (func)
 745         {
 746             req->call.type         = APC_USER;
 747             req->call.user.func    = func;
 748             req->call.user.args[0] = arg1;
 749             req->call.user.args[1] = arg2;
 750             req->call.user.args[2] = arg3;
 751         }
 752         else req->call.type = APC_NONE;  /* wake up only */
 753         ret = wine_server_call( req );
 754     }
 755     SERVER_END_REQ;
 756     return ret;
 757 }
 758
 759
 760 /***********************************************************************
 761  *              NtSetContextThread  (NTDLL.@)
 762  *              ZwSetContextThread  (NTDLL.@)
 763  */
 764 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 765 {
 766     NTSTATUS ret;
 767     DWORD dummy, i;
 768     BOOL self = FALSE;
 769
 770 #ifdef __i386__
 771     /* on i386 debug registers always require a server call */
 772     self = (handle == GetCurrentThread());
 773     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 774     {
 775         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 776         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 777                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 778                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 779     }
 780 #endif
 781
 782     if (!self)
 783     {
 784         SERVER_START_REQ( set_thread_context )
 785         {
 786             req->handle  = handle;
 787             req->flags   = context->ContextFlags;
 788             req->suspend = 0;
 789             wine_server_add_data( req, context, sizeof(*context) );
 790             ret = wine_server_call( req );
 791             self = reply->self;
 792         }
 793         SERVER_END_REQ;
 794
 795         if (ret == STATUS_PENDING)
 796         {
 797             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 798             {
 799                 for (i = 0; i < 100; i++)
 800                 {
 801                     SERVER_START_REQ( set_thread_context )
 802                     {
 803                         req->handle  = handle;
 804                         req->flags   = context->ContextFlags;
 805                         req->suspend = 0;
 806                         wine_server_add_data( req, context, sizeof(*context) );
 807                         ret = wine_server_call( req );
 808                     }
 809                     SERVER_END_REQ;
 810                     if (ret == STATUS_PENDING)
 811                     {
 812                         LARGE_INTEGER timeout;
 813                         timeout.QuadPart = -10000;
 814                         NtDelayExecution( FALSE, &timeout );
 815                     }
 816                     else break;
 817                 }
 818                 NtResumeThread( handle, &dummy );
 819             }
 820             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 821         }
 822
 823         if (ret) return ret;
 824     }
 825
 826     if (self) set_cpu_context( context );
 827     return STATUS_SUCCESS;
 828 }
 829
 830
 831 /* copy a context structure according to the flags */
 832 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 833 {
 834 #ifdef __i386__
 835     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 836     if (flags & CONTEXT_INTEGER)
 837     {
 838         to->Eax = from->Eax;
 839         to->Ebx = from->Ebx;
 840         to->Ecx = from->Ecx;
 841         to->Edx = from->Edx;
 842         to->Esi = from->Esi;
 843         to->Edi = from->Edi;
 844     }
 845     if (flags & CONTEXT_CONTROL)
 846     {
 847         to->Ebp    = from->Ebp;
 848         to->Esp    = from->Esp;
 849         to->Eip    = from->Eip;
 850         to->SegCs  = from->SegCs;
 851         to->SegSs  = from->SegSs;
 852         to->EFlags = from->EFlags;
 853     }
 854     if (flags & CONTEXT_SEGMENTS)
 855     {
 856         to->SegDs = from->SegDs;
 857         to->SegEs = from->SegEs;
 858         to->SegFs = from->SegFs;
 859         to->SegGs = from->SegGs;
 860     }
 861     if (flags & CONTEXT_DEBUG_REGISTERS)
 862     {
 863         to->Dr0 = from->Dr0;
 864         to->Dr1 = from->Dr1;
 865         to->Dr2 = from->Dr2;
 866         to->Dr3 = from->Dr3;
 867         to->Dr6 = from->Dr6;
 868         to->Dr7 = from->Dr7;
 869     }
 870     if (flags & CONTEXT_FLOATING_POINT)
 871     {
 872         to->FloatSave = from->FloatSave;
 873     }
 874     if (flags & CONTEXT_EXTENDED_REGISTERS)
 875     {
 876         memcpy( to->ExtendedRegisters, from->ExtendedRegisters, sizeof(to->ExtendedRegisters) );
 877     }
 878 #elif defined(__x86_64__)
 879     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 880     if (flags & CONTEXT_CONTROL)
 881     {
 882         to->Rbp    = from->Rbp;
 883         to->Rip    = from->Rip;
 884         to->Rsp    = from->Rsp;
 885         to->SegCs  = from->SegCs;
 886         to->SegSs  = from->SegSs;
 887         to->EFlags = from->EFlags;
 888         to->MxCsr  = from->MxCsr;
 889     }
 890     if (flags & CONTEXT_INTEGER)
 891     {
 892         to->Rax = from->Rax;
 893         to->Rcx = from->Rcx;
 894         to->Rdx = from->Rdx;
 895         to->Rbx = from->Rbx;
 896         to->Rsi = from->Rsi;
 897         to->Rdi = from->Rdi;
 898         to->R8  = from->R8;
 899         to->R9  = from->R9;
 900         to->R10 = from->R10;
 901         to->R11 = from->R11;
 902         to->R12 = from->R12;
 903         to->R13 = from->R13;
 904         to->R14 = from->R14;
 905         to->R15 = from->R15;
 906     }
 907     if (flags & CONTEXT_SEGMENTS)
 908     {
 909         to->SegDs = from->SegDs;
 910         to->SegEs = from->SegEs;
 911         to->SegFs = from->SegFs;
 912         to->SegGs = from->SegGs;
 913     }
 914     if (flags & CONTEXT_FLOATING_POINT)
 915     {
 916         to->u.FltSave = from->u.FltSave;
 917     }
 918     if (flags & CONTEXT_DEBUG_REGISTERS)
 919     {
 920         to->Dr0 = from->Dr0;
 921         to->Dr1 = from->Dr1;
 922         to->Dr2 = from->Dr2;
 923         to->Dr3 = from->Dr3;
 924         to->Dr6 = from->Dr6;
 925         to->Dr7 = from->Dr7;
 926     }
 927 #elif defined(__sparc__)
 928     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 929     if (flags & CONTEXT_CONTROL)
 930     {
 931         to->psr = from->psr;
 932         to->pc  = from->pc;
 933         to->npc = from->npc;
 934         to->y   = from->y;
 935         to->wim = from->wim;
 936         to->tbr = from->tbr;
 937     }
 938     if (flags & CONTEXT_INTEGER)
 939     {
 940         to->g0 = from->g0;
 941         to->g1 = from->g1;
 942         to->g2 = from->g2;
 943         to->g3 = from->g3;
 944         to->g4 = from->g4;
 945         to->g5 = from->g5;
 946         to->g6 = from->g6;
 947         to->g7 = from->g7;
 948         to->o0 = from->o0;
 949         to->o1 = from->o1;
 950         to->o2 = from->o2;
 951         to->o3 = from->o3;
 952         to->o4 = from->o4;
 953         to->o5 = from->o5;
 954         to->o6 = from->o6;
 955         to->o7 = from->o7;
 956         to->l0 = from->l0;
 957         to->l1 = from->l1;
 958         to->l2 = from->l2;
 959         to->l3 = from->l3;
 960         to->l4 = from->l4;
 961         to->l5 = from->l5;
 962         to->l6 = from->l6;
 963         to->l7 = from->l7;
 964         to->i0 = from->i0;
 965         to->i1 = from->i1;
 966         to->i2 = from->i2;
 967         to->i3 = from->i3;
 968         to->i4 = from->i4;
 969         to->i5 = from->i5;
 970         to->i6 = from->i6;
 971         to->i7 = from->i7;
 972     }
 973     if (flags & CONTEXT_FLOATING_POINT)
 974     {
 975         /* FIXME */
 976     }
 977 #elif defined(__powerpc__)
 978     /* Has no CPU id */
 979     if (flags & CONTEXT_CONTROL)
 980     {
 981         to->Msr = from->Msr;
 982         to->Ctr = from->Ctr;
 983         to->Iar = from->Iar;
 984     }
 985     if (flags & CONTEXT_INTEGER)
 986     {
 987         to->Gpr0  = from->Gpr0;
 988         to->Gpr1  = from->Gpr1;
 989         to->Gpr2  = from->Gpr2;
 990         to->Gpr3  = from->Gpr3;
 991         to->Gpr4  = from->Gpr4;
 992         to->Gpr5  = from->Gpr5;
 993         to->Gpr6  = from->Gpr6;
 994         to->Gpr7  = from->Gpr7;
 995         to->Gpr8  = from->Gpr8;
 996         to->Gpr9  = from->Gpr9;
 997         to->Gpr10 = from->Gpr10;
 998         to->Gpr11 = from->Gpr11;
 999         to->Gpr12 = from->Gpr12;
1000         to->Gpr13 = from->Gpr13;
1001         to->Gpr14 = from->Gpr14;
1002         to->Gpr15 = from->Gpr15;
1003         to->Gpr16 = from->Gpr16;
1004         to->Gpr17 = from->Gpr17;
1005         to->Gpr18 = from->Gpr18;
1006         to->Gpr19 = from->Gpr19;
1007         to->Gpr20 = from->Gpr20;
1008         to->Gpr21 = from->Gpr21;
1009         to->Gpr22 = from->Gpr22;
1010         to->Gpr23 = from->Gpr23;
1011         to->Gpr24 = from->Gpr24;
1012         to->Gpr25 = from->Gpr25;
1013         to->Gpr26 = from->Gpr26;
1014         to->Gpr27 = from->Gpr27;
1015         to->Gpr28 = from->Gpr28;
1016         to->Gpr29 = from->Gpr29;
1017         to->Gpr30 = from->Gpr30;
1018         to->Gpr31 = from->Gpr31;
1019         to->Xer   = from->Xer;
1020         to->Cr    = from->Cr;
1021     }
1022     if (flags & CONTEXT_FLOATING_POINT)
1023     {
1024         to->Fpr0  = from->Fpr0;
1025         to->Fpr1  = from->Fpr1;
1026         to->Fpr2  = from->Fpr2;
1027         to->Fpr3  = from->Fpr3;
1028         to->Fpr4  = from->Fpr4;
1029         to->Fpr5  = from->Fpr5;
1030         to->Fpr6  = from->Fpr6;
1031         to->Fpr7  = from->Fpr7;
1032         to->Fpr8  = from->Fpr8;
1033         to->Fpr9  = from->Fpr9;
1034         to->Fpr10 = from->Fpr10;
1035         to->Fpr11 = from->Fpr11;
1036         to->Fpr12 = from->Fpr12;
1037         to->Fpr13 = from->Fpr13;
1038         to->Fpr14 = from->Fpr14;
1039         to->Fpr15 = from->Fpr15;
1040         to->Fpr16 = from->Fpr16;
1041         to->Fpr17 = from->Fpr17;
1042         to->Fpr18 = from->Fpr18;
1043         to->Fpr19 = from->Fpr19;
1044         to->Fpr20 = from->Fpr20;
1045         to->Fpr21 = from->Fpr21;
1046         to->Fpr22 = from->Fpr22;
1047         to->Fpr23 = from->Fpr23;
1048         to->Fpr24 = from->Fpr24;
1049         to->Fpr25 = from->Fpr25;
1050         to->Fpr26 = from->Fpr26;
1051         to->Fpr27 = from->Fpr27;
1052         to->Fpr28 = from->Fpr28;
1053         to->Fpr29 = from->Fpr29;
1054         to->Fpr30 = from->Fpr30;
1055         to->Fpr31 = from->Fpr31;
1056         to->Fpscr = from->Fpscr;
1057     }
1058 #else
1059 #error You must implement context copying for your CPU
1060 #endif
1061 }
1062
1063
1064 /***********************************************************************
1065  *              NtGetContextThread  (NTDLL.@)
1066  *              ZwGetContextThread  (NTDLL.@)
1067  */
1068 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1069 {
1070     NTSTATUS ret;
1071     CONTEXT ctx;
1072     DWORD dummy, i;
1073     DWORD needed_flags = context->ContextFlags;
1074     BOOL self = (handle == GetCurrentThread());
1075
1076 #ifdef __i386__
1077     /* on i386 debug registers always require a server call */
1078     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1079 #endif
1080
1081     if (!self)
1082     {
1083         SERVER_START_REQ( get_thread_context )
1084         {
1085             req->handle  = handle;
1086             req->flags   = context->ContextFlags;
1087             req->suspend = 0;
1088             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1089             ret = wine_server_call( req );
1090             self = reply->self;
1091         }
1092         SERVER_END_REQ;
1093
1094         if (ret == STATUS_PENDING)
1095         {
1096             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1097             {
1098                 for (i = 0; i < 100; i++)
1099                 {
1100                     SERVER_START_REQ( get_thread_context )
1101                     {
1102                         req->handle  = handle;
1103                         req->flags   = context->ContextFlags;
1104                         req->suspend = 0;
1105                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1106                         ret = wine_server_call( req );
1107                     }
1108                     SERVER_END_REQ;
1109                     if (ret == STATUS_PENDING)
1110                     {
1111                         LARGE_INTEGER timeout;
1112                         timeout.QuadPart = -10000;
1113                         NtDelayExecution( FALSE, &timeout );
1114                     }
1115                     else break;
1116                 }
1117                 NtResumeThread( handle, &dummy );
1118             }
1119             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1120         }
1121         if (ret) return ret;
1122         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1123         needed_flags &= ~ctx.ContextFlags;
1124     }
1125
1126     if (self)
1127     {
1128         if (needed_flags)
1129         {
1130             get_cpu_context( &ctx );
1131             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1132         }
1133 #ifdef __i386__
1134         /* update the cached version of the debug registers */
1135         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1136         {
1137             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1138             regs->dr0 = context->Dr0;
1139             regs->dr1 = context->Dr1;
1140             regs->dr2 = context->Dr2;
1141             regs->dr3 = context->Dr3;
1142             regs->dr6 = context->Dr6;
1143             regs->dr7 = context->Dr7;
1144         }
1145 #endif
1146     }
1147     return STATUS_SUCCESS;
1148 }
1149
1150
1151 /******************************************************************************
1152  *              NtQueryInformationThread  (NTDLL.@)
1153  *              ZwQueryInformationThread  (NTDLL.@)
1154  */
1155 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1156                                           void *data, ULONG length, ULONG *ret_len )
1157 {
1158     NTSTATUS status;
1159
1160     switch(class)
1161     {
1162     case ThreadBasicInformation:
1163         {
1164             THREAD_BASIC_INFORMATION info;
1165             const unsigned int affinity_mask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1166
1167             SERVER_START_REQ( get_thread_info )
1168             {
1169                 req->handle = handle;
1170                 req->tid_in = 0;
1171                 if (!(status = wine_server_call( req )))
1172                 {
1173                     info.ExitStatus             = reply->exit_code;
1174                     info.TebBaseAddress         = reply->teb;
1175                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
1176                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
1177                     info.AffinityMask           = reply->affinity & affinity_mask;
1178                     info.Priority               = reply->priority;
1179                     info.BasePriority           = reply->priority;  /* FIXME */
1180                 }
1181             }
1182             SERVER_END_REQ;
1183             if (status == STATUS_SUCCESS)
1184             {
1185                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1186                 if (ret_len) *ret_len = min( length, sizeof(info) );
1187             }
1188         }
1189         return status;
1190     case ThreadTimes:
1191         {
1192             KERNEL_USER_TIMES   kusrt;
1193             /* We need to do a server call to get the creation time or exit time */
1194             /* This works on any thread */
1195             SERVER_START_REQ( get_thread_info )
1196             {
1197                 req->handle = handle;
1198                 req->tid_in = 0;
1199                 status = wine_server_call( req );
1200                 if (status == STATUS_SUCCESS)
1201                 {
1202                     kusrt.CreateTime.QuadPart = reply->creation_time;
1203                     kusrt.ExitTime.QuadPart = reply->exit_time;
1204                 }
1205             }
1206             SERVER_END_REQ;
1207             if (status == STATUS_SUCCESS)
1208             {
1209                 /* We call times(2) for kernel time or user time */
1210                 /* We can only (portably) do this for the current thread */
1211                 if (handle == GetCurrentThread())
1212                 {
1213                     struct tms time_buf;
1214                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1215
1216                     times(&time_buf);
1217                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1218                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1219                 }
1220                 else
1221                 {
1222                     static BOOL reported = FALSE;
1223
1224                     kusrt.KernelTime.QuadPart = 0;
1225                     kusrt.UserTime.QuadPart = 0;
1226                     if (reported)
1227                         TRACE("Cannot get kerneltime or usertime of other threads\n");
1228                     else
1229                     {
1230                         FIXME("Cannot get kerneltime or usertime of other threads\n");
1231                         reported = TRUE;
1232                     }
1233                 }
1234                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1235                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1236             }
1237         }
1238         return status;
1239     case ThreadDescriptorTableEntry:
1240         {
1241 #ifdef __i386__
1242             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1243             if (length < sizeof(*tdi))
1244                 status = STATUS_INFO_LENGTH_MISMATCH;
1245             else if (!(tdi->Selector & 4))  /* GDT selector */
1246             {
1247                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1248                 status = STATUS_SUCCESS;
1249                 if (!sel)  /* null selector */
1250                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1251                 else
1252                 {
1253                     tdi->Entry.BaseLow                   = 0;
1254                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1255                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1256                     tdi->Entry.LimitLow                  = 0xffff;
1257                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1258                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1259                     tdi->Entry.HighWord.Bits.Sys         = 0;
1260                     tdi->Entry.HighWord.Bits.Pres        = 1;
1261                     tdi->Entry.HighWord.Bits.Granularity = 1;
1262                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1263                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1264                     /* it has to be one of the system GDT selectors */
1265                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1266                     {
1267                         if (sel == (wine_get_cs() & ~3))
1268                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1269                         else status = STATUS_ACCESS_DENIED;
1270                     }
1271                 }
1272             }
1273             else
1274             {
1275                 SERVER_START_REQ( get_selector_entry )
1276                 {
1277                     req->handle = handle;
1278                     req->entry = tdi->Selector >> 3;
1279                     status = wine_server_call( req );
1280                     if (!status)
1281                     {
1282                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1283                             status = STATUS_ACCESS_VIOLATION;
1284                         else
1285                         {
1286                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1287                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1288                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1289                         }
1290                     }
1291                 }
1292                 SERVER_END_REQ;
1293             }
1294             if (status == STATUS_SUCCESS && ret_len)
1295                 /* yes, that's a bit strange, but it's the way it is */
1296                 *ret_len = sizeof(LDT_ENTRY);
1297 #else
1298             status = STATUS_NOT_IMPLEMENTED;
1299 #endif
1300             return status;
1301         }
1302     case ThreadAmILastThread:
1303         {
1304             SERVER_START_REQ(get_thread_info)
1305             {
1306                 req->handle = handle;
1307                 req->tid_in = 0;
1308                 status = wine_server_call( req );
1309                 if (status == STATUS_SUCCESS)
1310                 {
1311                     BOOLEAN last = reply->last;
1312                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1313                     if (ret_len) *ret_len = min( length, sizeof(last) );
1314                 }
1315             }
1316             SERVER_END_REQ;
1317             return status;
1318         }
1319     case ThreadPriority:
1320     case ThreadBasePriority:
1321     case ThreadAffinityMask:
1322     case ThreadImpersonationToken:
1323     case ThreadEnableAlignmentFaultFixup:
1324     case ThreadEventPair_Reusable:
1325     case ThreadQuerySetWin32StartAddress:
1326     case ThreadZeroTlsCell:
1327     case ThreadPerformanceCount:
1328     case ThreadIdealProcessor:
1329     case ThreadPriorityBoost:
1330     case ThreadSetTlsArrayAddress:
1331     case ThreadIsIoPending:
1332     default:
1333         FIXME( "info class %d not supported yet\n", class );
1334         return STATUS_NOT_IMPLEMENTED;
1335     }
1336 }
1337
1338
1339 /******************************************************************************
1340  *              NtSetInformationThread  (NTDLL.@)
1341  *              ZwSetInformationThread  (NTDLL.@)
1342  */
1343 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1344                                         LPCVOID data, ULONG length )
1345 {
1346     NTSTATUS status;
1347     switch(class)
1348     {
1349     case ThreadZeroTlsCell:
1350         if (handle == GetCurrentThread())
1351         {
1352             LIST_ENTRY *entry;
1353             DWORD index;
1354
1355             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1356             index = *(const DWORD *)data;
1357             if (index < TLS_MINIMUM_AVAILABLE)
1358             {
1359                 RtlAcquirePebLock();
1360                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1361                 {
1362                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1363                     teb->TlsSlots[index] = 0;
1364                 }
1365                 RtlReleasePebLock();
1366             }
1367             else
1368             {
1369                 index -= TLS_MINIMUM_AVAILABLE;
1370                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1371                     return STATUS_INVALID_PARAMETER;
1372                 RtlAcquirePebLock();
1373                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1374                 {
1375                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1376                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1377                 }
1378                 RtlReleasePebLock();
1379             }
1380             return STATUS_SUCCESS;
1381         }
1382         FIXME( "ZeroTlsCell not supported on other threads\n" );
1383         return STATUS_NOT_IMPLEMENTED;
1384
1385     case ThreadImpersonationToken:
1386         {
1387             const HANDLE *phToken = data;
1388             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1389             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1390             SERVER_START_REQ( set_thread_info )
1391             {
1392                 req->handle   = handle;
1393                 req->token    = *phToken;
1394                 req->mask     = SET_THREAD_INFO_TOKEN;
1395                 status = wine_server_call( req );
1396             }
1397             SERVER_END_REQ;
1398         }
1399         return status;
1400     case ThreadBasePriority:
1401         {
1402             const DWORD *pprio = data;
1403             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1404             SERVER_START_REQ( set_thread_info )
1405             {
1406                 req->handle   = handle;
1407                 req->priority = *pprio;
1408                 req->mask     = SET_THREAD_INFO_PRIORITY;
1409                 status = wine_server_call( req );
1410             }
1411             SERVER_END_REQ;
1412         }
1413         return status;
1414     case ThreadAffinityMask:
1415         {
1416             const DWORD affinity_mask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1417             const DWORD *paff = data;
1418             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1419             if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1420             SERVER_START_REQ( set_thread_info )
1421             {
1422                 req->handle   = handle;
1423                 req->affinity = *paff;
1424                 req->mask     = SET_THREAD_INFO_AFFINITY;
1425                 status = wine_server_call( req );
1426             }
1427             SERVER_END_REQ;
1428         }
1429         return status;
1430     case ThreadBasicInformation:
1431     case ThreadTimes:
1432     case ThreadPriority:
1433     case ThreadDescriptorTableEntry:
1434     case ThreadEnableAlignmentFaultFixup:
1435     case ThreadEventPair_Reusable:
1436     case ThreadQuerySetWin32StartAddress:
1437     case ThreadPerformanceCount:
1438     case ThreadAmILastThread:
1439     case ThreadIdealProcessor:
1440     case ThreadPriorityBoost:
1441     case ThreadSetTlsArrayAddress:
1442     case ThreadIsIoPending:
1443     default:
1444         FIXME( "info class %d not supported yet\n", class );
1445         return STATUS_NOT_IMPLEMENTED;
1446     }
1447 }
1448
1449
1450 /**********************************************************************
1451  *           NtCurrentTeb   (NTDLL.@)
1452  */
1453 #if defined(__i386__) && defined(__GNUC__)
1454
1455 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1456
1457 #elif defined(__i386__) && defined(_MSC_VER)
1458
1459 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1460
1461 #else
1462
1463 /**********************************************************************/
1464
1465 TEB * WINAPI NtCurrentTeb(void)
1466 {
1467     return pthread_functions.get_current_teb();
1468 }
1469
1470 #endif  /* __i386__ */