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 "wine/exception.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  46 WINE_DECLARE_DEBUG_CHANNEL(relay);
  47
  48 /* info passed to a starting thread */
  49 struct startup_info
  50 {
  51     struct wine_pthread_thread_info pthread_info;
  52     PRTL_THREAD_START_ROUTINE       entry_point;
  53     void                           *entry_arg;
  54 };
  55
  56 static PEB_LDR_DATA ldr;
  57 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  58 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  59 static RTL_BITMAP tls_bitmap;
  60 static RTL_BITMAP tls_expansion_bitmap;
  61 static LIST_ENTRY tls_links;
  62 static size_t sigstack_total_size;
  63 static ULONG sigstack_zero_bits;
  64
  65 struct wine_pthread_functions pthread_functions = { NULL };
  66
  67
  68 static RTL_CRITICAL_SECTION ldt_section;
  69 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  70 {
  71     0, 0, &ldt_section,
  72     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  73       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  74 };
  75 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  76 static sigset_t ldt_sigset;
  77
  78 /***********************************************************************
  79  *           locking for LDT routines
  80  */
  81 static void ldt_lock(void)
  82 {
  83     sigset_t sigset;
  84
  85     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
  86     RtlEnterCriticalSection( &ldt_section );
  87     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  88 }
  89
  90 static void ldt_unlock(void)
  91 {
  92     if (ldt_section.RecursionCount == 1)
  93     {
  94         sigset_t sigset = ldt_sigset;
  95         RtlLeaveCriticalSection( &ldt_section );
  96         pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
  97     }
  98     else RtlLeaveCriticalSection( &ldt_section );
  99 }
 100
 101
 102 /***********************************************************************
 103  *           init_teb
 104  */
 105 static inline NTSTATUS init_teb( TEB *teb )
 106 {
 107     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 108     struct ntdll_thread_regs *thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 109
 110     teb->Tib.ExceptionList = (void *)~0UL;
 111     teb->Tib.StackBase     = (void *)~0UL;
 112     teb->Tib.Self          = &teb->Tib;
 113     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 114     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 115
 116     if (!(thread_regs->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 117     thread_data->request_fd = -1;
 118     thread_data->reply_fd   = -1;
 119     thread_data->wait_fd[0] = -1;
 120     thread_data->wait_fd[1] = -1;
 121
 122     return STATUS_SUCCESS;
 123 }
 124
 125
 126 /***********************************************************************
 127  *           fix_unicode_string
 128  *
 129  * Make sure the unicode string doesn't point beyond the end pointer
 130  */
 131 static inline void fix_unicode_string( UNICODE_STRING *str, char *end_ptr )
 132 {
 133     if ((char *)str->Buffer >= end_ptr)
 134     {
 135         str->Length = str->MaximumLength = 0;
 136         str->Buffer = NULL;
 137         return;
 138     }
 139     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 140     {
 141         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 142     }
 143     if (str->Length >= str->MaximumLength)
 144     {
 145         if (str->MaximumLength >= sizeof(WCHAR))
 146             str->Length = str->MaximumLength - sizeof(WCHAR);
 147         else
 148             str->Length = str->MaximumLength = 0;
 149     }
 150 }
 151
 152
 153 /***********************************************************************
 154  *           init_user_process_params
 155  *
 156  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 157  */
 158 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 159 {
 160     void *ptr;
 161     SIZE_T env_size;
 162     NTSTATUS status;
 163     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 164
 165     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 166                                       MEM_COMMIT, PAGE_READWRITE );
 167     if (status != STATUS_SUCCESS) return status;
 168
 169     params->AllocationSize = info_size;
 170     NtCurrentTeb()->Peb->ProcessParameters = params;
 171
 172     SERVER_START_REQ( get_startup_info )
 173     {
 174         wine_server_set_reply( req, params, info_size );
 175         if (!(status = wine_server_call( req )))
 176         {
 177             info_size = wine_server_reply_size( reply );
 178             *exe_file = reply->exe_file;
 179             params->hStdInput  = reply->hstdin;
 180             params->hStdOutput = reply->hstdout;
 181             params->hStdError  = reply->hstderr;
 182         }
 183     }
 184     SERVER_END_REQ;
 185     if (status != STATUS_SUCCESS) return status;
 186
 187     if (params->Size > info_size) params->Size = info_size;
 188
 189     /* make sure the strings are valid */
 190     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 191     fix_unicode_string( &params->DllPath, (char *)info_size );
 192     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 193     fix_unicode_string( &params->CommandLine, (char *)info_size );
 194     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 195     fix_unicode_string( &params->Desktop, (char *)info_size );
 196     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 197     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 198
 199     /* environment needs to be a separate memory block */
 200     env_size = info_size - params->Size;
 201     if (!env_size) env_size = 1;
 202     ptr = NULL;
 203     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 204                                       MEM_COMMIT, PAGE_READWRITE );
 205     if (status != STATUS_SUCCESS) return status;
 206     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 207     params->Environment = ptr;
 208
 209     RtlNormalizeProcessParams( params );
 210     return status;
 211 }
 212
 213
 214 /***********************************************************************
 215  *           thread_init
 216  *
 217  * Setup the initial thread.
 218  *
 219  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 220  */
 221 HANDLE thread_init(void)
 222 {
 223     PEB *peb;
 224     TEB *teb;
 225     void *addr;
 226     SIZE_T size, info_size;
 227     HANDLE exe_file = 0;
 228     struct ntdll_thread_data *thread_data;
 229     struct ntdll_thread_regs *thread_regs;
 230     struct wine_pthread_thread_info thread_info;
 231     static struct debug_info debug_info;  /* debug info for initial thread */
 232
 233     virtual_init();
 234
 235     /* reserve space for shared user data */
 236
 237     addr = (void *)0x7ffe0000;
 238     size = 0x10000;
 239     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE, PAGE_READONLY );
 240
 241     /* allocate and initialize the PEB */
 242
 243     addr = NULL;
 244     size = sizeof(*peb);
 245     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 246                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 247     peb = addr;
 248
 249     peb->NumberOfProcessors = 1;
 250     peb->ProcessParameters  = &params;
 251     peb->TlsBitmap          = &tls_bitmap;
 252     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 253     peb->LdrData            = &ldr;
 254     params.CurrentDirectory.DosPath.Buffer = current_dir;
 255     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 256     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 257     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 258     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 259                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 260     InitializeListHead( &ldr.InLoadOrderModuleList );
 261     InitializeListHead( &ldr.InMemoryOrderModuleList );
 262     InitializeListHead( &ldr.InInitializationOrderModuleList );
 263     InitializeListHead( &tls_links );
 264
 265     /* allocate and initialize the initial TEB */
 266
 267     sigstack_total_size = get_signal_stack_total_size();
 268     while (1 << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 269     assert( 1 << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 270     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 271     thread_info.teb_size = sigstack_total_size;
 272
 273     addr = NULL;
 274     size = sigstack_total_size;
 275     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 276                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 277     teb = addr;
 278     teb->Peb = peb;
 279     thread_info.teb_size = size;
 280     init_teb( teb );
 281     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 282     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 283     thread_data->debug_info = &debug_info;
 284     InsertHeadList( &tls_links, &teb->TlsLinks );
 285
 286     thread_info.stack_base = NULL;
 287     thread_info.stack_size = 0;
 288     thread_info.teb_base   = teb;
 289     thread_info.teb_sel    = thread_regs->fs;
 290     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 291     pthread_functions.init_current_teb( &thread_info );
 292     pthread_functions.init_thread( &thread_info );
 293     virtual_init_threading();
 294
 295     debug_info.str_pos = debug_info.strings;
 296     debug_info.out_pos = debug_info.output;
 297     debug_init();
 298
 299     /* setup the server connection */
 300     server_init_process();
 301     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 302
 303     /* create the process heap */
 304     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 305     {
 306         MESSAGE( "wine: failed to create the process heap\n" );
 307         exit(1);
 308     }
 309
 310     /* allocate user parameters */
 311     if (info_size)
 312     {
 313         init_user_process_params( info_size, &exe_file );
 314     }
 315     else
 316     {
 317         /* This is wine specific: we have no parent (we're started from unix)
 318          * so, create a simple console with bare handles to unix stdio
 319          */
 320         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 321         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 322         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 323     }
 324
 325     /* initialize LDT locking */
 326     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 327
 328     return exe_file;
 329 }
 330
 331 typedef LONG (WINAPI *PUNHANDLED_EXCEPTION_FILTER)(PEXCEPTION_POINTERS);
 332 static PUNHANDLED_EXCEPTION_FILTER get_unhandled_exception_filter(void)
 333 {
 334     static PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter;
 335     static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
 336     UNICODE_STRING module_name;
 337     ANSI_STRING func_name;
 338     HMODULE kernel32_handle;
 339
 340     if (unhandled_exception_filter) return unhandled_exception_filter;
 341
 342     RtlInitUnicodeString(&module_name, kernel32W);
 343     RtlInitAnsiString( &func_name, "UnhandledExceptionFilter" );
 344
 345     if (LdrGetDllHandle( 0, 0, &module_name, &kernel32_handle ) == STATUS_SUCCESS)
 346         LdrGetProcedureAddress( kernel32_handle, &func_name, 0,
 347                                 (void **)&unhandled_exception_filter );
 348
 349     return unhandled_exception_filter;
 350 }
 351
 352 /***********************************************************************
 353  *           call_thread_func
 354  *
 355  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 356  */
 357 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 358 {
 359     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)rtl_func;
 360     DWORD exit_code;
 361     BOOL last;
 362
 363     MODULE_DllThreadAttach( NULL );
 364
 365     if (TRACE_ON(relay))
 366         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), func, arg );
 367
 368     exit_code = func( arg );
 369
 370     /* send the exit code to the server */
 371     SERVER_START_REQ( terminate_thread )
 372     {
 373         req->handle    = GetCurrentThread();
 374         req->exit_code = exit_code;
 375         wine_server_call( req );
 376         last = reply->last;
 377     }
 378     SERVER_END_REQ;
 379
 380     if (last)
 381     {
 382         LdrShutdownProcess();
 383         exit( exit_code );
 384     }
 385     else
 386     {
 387         LdrShutdownThread();
 388         server_exit_thread( exit_code );
 389     }
 390 }
 391
 392
 393 /***********************************************************************
 394  *           start_thread
 395  *
 396  * Startup routine for a newly created thread.
 397  */
 398 static void start_thread( struct wine_pthread_thread_info *info )
 399 {
 400     TEB *teb = info->teb_base;
 401     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 402     struct startup_info *startup_info = (struct startup_info *)info;
 403     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 404     void *arg = startup_info->entry_arg;
 405     struct debug_info debug_info;
 406     SIZE_T size, page_size = getpagesize();
 407
 408     debug_info.str_pos = debug_info.strings;
 409     debug_info.out_pos = debug_info.output;
 410     thread_data->debug_info = &debug_info;
 411
 412     pthread_functions.init_current_teb( info );
 413     SIGNAL_Init();
 414     server_init_thread( info->pid, info->tid, func );
 415     pthread_functions.init_thread( info );
 416
 417     /* allocate a memory view for the stack */
 418     size = info->stack_size;
 419     teb->DeallocationStack = info->stack_base;
 420     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 421                              &size, MEM_SYSTEM, PAGE_READWRITE );
 422     /* limit is lower than base since the stack grows down */
 423     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 424     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 425
 426     /* setup the guard page */
 427     size = page_size;
 428     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 429
 430     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 431
 432     RtlAcquirePebLock();
 433     InsertHeadList( &tls_links, &teb->TlsLinks );
 434     RtlReleasePebLock();
 435
 436     /* NOTE: Windows does not have an exception handler around the call to
 437      * the thread attach. We do for ease of debugging */
 438     if (get_unhandled_exception_filter())
 439     {
 440         __TRY
 441         {
 442             call_thread_func( func, arg );
 443         }
 444         __EXCEPT(get_unhandled_exception_filter())
 445         {
 446             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 447         }
 448         __ENDTRY
 449     }
 450     else
 451         call_thread_func( func, arg );
 452 }
 453
 454
 455 /***********************************************************************
 456  *              RtlCreateUserThread   (NTDLL.@)
 457  */
 458 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 459                                      BOOLEAN suspended, PVOID stack_addr,
 460                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 461                                      PRTL_THREAD_START_ROUTINE start, void *param,
 462                                      HANDLE *handle_ptr, CLIENT_ID *id )
 463 {
 464     sigset_t sigset;
 465     struct ntdll_thread_data *thread_data;
 466     struct ntdll_thread_regs *thread_regs = NULL;
 467     struct startup_info *info = NULL;
 468     void *addr = NULL;
 469     HANDLE handle = 0;
 470     TEB *teb;
 471     DWORD tid = 0;
 472     int request_pipe[2];
 473     NTSTATUS status;
 474     SIZE_T size, page_size = getpagesize();
 475
 476     if( ! is_current_process( process ) )
 477     {
 478         ERR("Unsupported on other process\n");
 479         return STATUS_ACCESS_DENIED;
 480     }
 481
 482     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 483     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 484     wine_server_send_fd( request_pipe[0] );
 485
 486     SERVER_START_REQ( new_thread )
 487     {
 488         req->access     = THREAD_ALL_ACCESS;
 489         req->attributes = 0;  /* FIXME */
 490         req->suspend    = suspended;
 491         req->request_fd = request_pipe[0];
 492         if (!(status = wine_server_call( req )))
 493         {
 494             handle = reply->handle;
 495             tid = reply->tid;
 496         }
 497         close( request_pipe[0] );
 498     }
 499     SERVER_END_REQ;
 500
 501     if (status)
 502     {
 503         close( request_pipe[1] );
 504         return status;
 505     }
 506
 507     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 508
 509     addr = NULL;
 510     size = sigstack_total_size;
 511     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 512                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 513         goto error;
 514     teb = addr;
 515     teb->Peb = NtCurrentTeb()->Peb;
 516     info = (struct startup_info *)(teb + 1);
 517     info->pthread_info.teb_size = size;
 518     if ((status = init_teb( teb ))) goto error;
 519
 520     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 521     teb->ClientId.UniqueThread  = (HANDLE)tid;
 522
 523     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 524     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 525     thread_data->request_fd  = request_pipe[1];
 526
 527     info->pthread_info.teb_base = teb;
 528     info->pthread_info.teb_sel  = thread_regs->fs;
 529
 530     /* inherit debug registers from parent thread */
 531     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 532     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 533     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 534     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 535     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 536     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 537
 538     if (!stack_reserve || !stack_commit)
 539     {
 540         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 541         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 542         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 543     }
 544     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 545     stack_reserve += page_size;  /* for the guard page */
 546     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 547     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 548
 549     info->pthread_info.stack_base = NULL;
 550     info->pthread_info.stack_size = stack_reserve;
 551     info->pthread_info.entry      = start_thread;
 552     info->entry_point             = start;
 553     info->entry_arg               = param;
 554
 555     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 556     {
 557         status = STATUS_NO_MEMORY;
 558         goto error;
 559     }
 560     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 561
 562     if (id) id->UniqueThread = (HANDLE)tid;
 563     if (handle_ptr) *handle_ptr = handle;
 564     else NtClose( handle );
 565
 566     return STATUS_SUCCESS;
 567
 568 error:
 569     if (thread_regs) wine_ldt_free_fs( thread_regs->fs );
 570     if (addr)
 571     {
 572         SIZE_T size = 0;
 573         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 574     }
 575     if (handle) NtClose( handle );
 576     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 577     close( request_pipe[1] );
 578     return status;
 579 }
 580
 581
 582 /***********************************************************************
 583  *           RtlExitUserThread  (NTDLL.@)
 584  */
 585 void WINAPI RtlExitUserThread( ULONG status )
 586 {
 587     LdrShutdownThread();
 588     server_exit_thread( status );
 589 }
 590
 591
 592 /***********************************************************************
 593  *              NtOpenThread   (NTDLL.@)
 594  *              ZwOpenThread   (NTDLL.@)
 595  */
 596 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 597                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 598 {
 599     NTSTATUS ret;
 600
 601     SERVER_START_REQ( open_thread )
 602     {
 603         req->tid        = (thread_id_t)id->UniqueThread;
 604         req->access     = access;
 605         req->attributes = attr ? attr->Attributes : 0;
 606         ret = wine_server_call( req );
 607         *handle = reply->handle;
 608     }
 609     SERVER_END_REQ;
 610     return ret;
 611 }
 612
 613
 614 /******************************************************************************
 615  *              NtSuspendThread   (NTDLL.@)
 616  *              ZwSuspendThread   (NTDLL.@)
 617  */
 618 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 619 {
 620     NTSTATUS ret;
 621
 622     SERVER_START_REQ( suspend_thread )
 623     {
 624         req->handle = handle;
 625         if (!(ret = wine_server_call( req ))) *count = reply->count;
 626     }
 627     SERVER_END_REQ;
 628     return ret;
 629 }
 630
 631
 632 /******************************************************************************
 633  *              NtResumeThread   (NTDLL.@)
 634  *              ZwResumeThread   (NTDLL.@)
 635  */
 636 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 637 {
 638     NTSTATUS ret;
 639
 640     SERVER_START_REQ( resume_thread )
 641     {
 642         req->handle = handle;
 643         if (!(ret = wine_server_call( req ))) *count = reply->count;
 644     }
 645     SERVER_END_REQ;
 646     return ret;
 647 }
 648
 649
 650 /******************************************************************************
 651  *              NtAlertResumeThread   (NTDLL.@)
 652  *              ZwAlertResumeThread   (NTDLL.@)
 653  */
 654 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 655 {
 656     FIXME( "stub: should alert thread %p\n", handle );
 657     return NtResumeThread( handle, count );
 658 }
 659
 660
 661 /******************************************************************************
 662  *              NtAlertThread   (NTDLL.@)
 663  *              ZwAlertThread   (NTDLL.@)
 664  */
 665 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 666 {
 667     FIXME( "stub: %p\n", handle );
 668     return STATUS_NOT_IMPLEMENTED;
 669 }
 670
 671
 672 /******************************************************************************
 673  *              NtTerminateThread  (NTDLL.@)
 674  *              ZwTerminateThread  (NTDLL.@)
 675  */
 676 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 677 {
 678     NTSTATUS ret;
 679     BOOL self, last;
 680
 681     SERVER_START_REQ( terminate_thread )
 682     {
 683         req->handle    = handle;
 684         req->exit_code = exit_code;
 685         ret = wine_server_call( req );
 686         self = !ret && reply->self;
 687         last = reply->last;
 688     }
 689     SERVER_END_REQ;
 690
 691     if (self)
 692     {
 693         if (last) exit( exit_code );
 694         else server_abort_thread( exit_code );
 695     }
 696     return ret;
 697 }
 698
 699
 700 /******************************************************************************
 701  *              NtQueueApcThread  (NTDLL.@)
 702  */
 703 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 704                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 705 {
 706     NTSTATUS ret;
 707     SERVER_START_REQ( queue_apc )
 708     {
 709         req->thread = handle;
 710         if (func)
 711         {
 712             req->call.type         = APC_USER;
 713             req->call.user.func    = func;
 714             req->call.user.args[0] = arg1;
 715             req->call.user.args[1] = arg2;
 716             req->call.user.args[2] = arg3;
 717         }
 718         else req->call.type = APC_NONE;  /* wake up only */
 719         ret = wine_server_call( req );
 720     }
 721     SERVER_END_REQ;
 722     return ret;
 723 }
 724
 725
 726 /***********************************************************************
 727  *              NtSetContextThread  (NTDLL.@)
 728  *              ZwSetContextThread  (NTDLL.@)
 729  */
 730 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 731 {
 732     NTSTATUS ret;
 733     DWORD dummy, i;
 734     BOOL self = FALSE;
 735
 736 #ifdef __i386__
 737     /* on i386 debug registers always require a server call */
 738     self = (handle == GetCurrentThread());
 739     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 740     {
 741         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 742         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 743                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 744                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 745     }
 746 #endif
 747
 748     if (!self)
 749     {
 750         SERVER_START_REQ( set_thread_context )
 751         {
 752             req->handle  = handle;
 753             req->flags   = context->ContextFlags;
 754             req->suspend = 0;
 755             wine_server_add_data( req, context, sizeof(*context) );
 756             ret = wine_server_call( req );
 757             self = reply->self;
 758         }
 759         SERVER_END_REQ;
 760
 761         if (ret == STATUS_PENDING)
 762         {
 763             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 764             {
 765                 for (i = 0; i < 100; i++)
 766                 {
 767                     SERVER_START_REQ( set_thread_context )
 768                     {
 769                         req->handle  = handle;
 770                         req->flags   = context->ContextFlags;
 771                         req->suspend = 0;
 772                         wine_server_add_data( req, context, sizeof(*context) );
 773                         ret = wine_server_call( req );
 774                     }
 775                     SERVER_END_REQ;
 776                     if (ret != STATUS_PENDING) break;
 777                     NtYieldExecution();
 778                 }
 779                 NtResumeThread( handle, &dummy );
 780             }
 781             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 782         }
 783
 784         if (ret) return ret;
 785     }
 786
 787     if (self) set_cpu_context( context );
 788     return STATUS_SUCCESS;
 789 }
 790
 791
 792 /* copy a context structure according to the flags */
 793 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 794 {
 795 #ifdef __i386__
 796     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 797     if (flags & CONTEXT_INTEGER)
 798     {
 799         to->Eax = from->Eax;
 800         to->Ebx = from->Ebx;
 801         to->Ecx = from->Ecx;
 802         to->Edx = from->Edx;
 803         to->Esi = from->Esi;
 804         to->Edi = from->Edi;
 805     }
 806     if (flags & CONTEXT_CONTROL)
 807     {
 808         to->Ebp    = from->Ebp;
 809         to->Esp    = from->Esp;
 810         to->Eip    = from->Eip;
 811         to->SegCs  = from->SegCs;
 812         to->SegSs  = from->SegSs;
 813         to->EFlags = from->EFlags;
 814     }
 815     if (flags & CONTEXT_SEGMENTS)
 816     {
 817         to->SegDs = from->SegDs;
 818         to->SegEs = from->SegEs;
 819         to->SegFs = from->SegFs;
 820         to->SegGs = from->SegGs;
 821     }
 822     if (flags & CONTEXT_DEBUG_REGISTERS)
 823     {
 824         to->Dr0 = from->Dr0;
 825         to->Dr1 = from->Dr1;
 826         to->Dr2 = from->Dr2;
 827         to->Dr3 = from->Dr3;
 828         to->Dr6 = from->Dr6;
 829         to->Dr7 = from->Dr7;
 830     }
 831     if (flags & CONTEXT_FLOATING_POINT)
 832     {
 833         to->FloatSave = from->FloatSave;
 834     }
 835 #elif defined(__x86_64__)
 836     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 837     if (flags & CONTEXT_CONTROL)
 838     {
 839         to->Rbp    = from->Rbp;
 840         to->Rip    = from->Rip;
 841         to->Rsp    = from->Rsp;
 842         to->SegCs  = from->SegCs;
 843         to->SegSs  = from->SegSs;
 844         to->EFlags = from->EFlags;
 845         to->MxCsr  = from->MxCsr;
 846     }
 847     if (flags & CONTEXT_INTEGER)
 848     {
 849         to->Rax = from->Rax;
 850         to->Rcx = from->Rcx;
 851         to->Rdx = from->Rdx;
 852         to->Rbx = from->Rbx;
 853         to->Rsi = from->Rsi;
 854         to->Rdi = from->Rdi;
 855         to->R8  = from->R8;
 856         to->R9  = from->R9;
 857         to->R10 = from->R10;
 858         to->R11 = from->R11;
 859         to->R12 = from->R12;
 860         to->R13 = from->R13;
 861         to->R14 = from->R14;
 862         to->R15 = from->R15;
 863     }
 864     if (flags & CONTEXT_SEGMENTS)
 865     {
 866         to->SegDs = from->SegDs;
 867         to->SegEs = from->SegEs;
 868         to->SegFs = from->SegFs;
 869         to->SegGs = from->SegGs;
 870     }
 871     if (flags & CONTEXT_FLOATING_POINT)
 872     {
 873         to->u.FltSave = from->u.FltSave;
 874     }
 875     if (flags & CONTEXT_DEBUG_REGISTERS)
 876     {
 877         to->Dr0 = from->Dr0;
 878         to->Dr1 = from->Dr1;
 879         to->Dr2 = from->Dr2;
 880         to->Dr3 = from->Dr3;
 881         to->Dr6 = from->Dr6;
 882         to->Dr7 = from->Dr7;
 883     }
 884 #elif defined(__sparc__)
 885     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 886     if (flags & CONTEXT_CONTROL)
 887     {
 888         to->psr = from->psr;
 889         to->pc  = from->pc;
 890         to->npc = from->npc;
 891         to->y   = from->y;
 892         to->wim = from->wim;
 893         to->tbr = from->tbr;
 894     }
 895     if (flags & CONTEXT_INTEGER)
 896     {
 897         to->g0 = from->g0;
 898         to->g1 = from->g1;
 899         to->g2 = from->g2;
 900         to->g3 = from->g3;
 901         to->g4 = from->g4;
 902         to->g5 = from->g5;
 903         to->g6 = from->g6;
 904         to->g7 = from->g7;
 905         to->o0 = from->o0;
 906         to->o1 = from->o1;
 907         to->o2 = from->o2;
 908         to->o3 = from->o3;
 909         to->o4 = from->o4;
 910         to->o5 = from->o5;
 911         to->o6 = from->o6;
 912         to->o7 = from->o7;
 913         to->l0 = from->l0;
 914         to->l1 = from->l1;
 915         to->l2 = from->l2;
 916         to->l3 = from->l3;
 917         to->l4 = from->l4;
 918         to->l5 = from->l5;
 919         to->l6 = from->l6;
 920         to->l7 = from->l7;
 921         to->i0 = from->i0;
 922         to->i1 = from->i1;
 923         to->i2 = from->i2;
 924         to->i3 = from->i3;
 925         to->i4 = from->i4;
 926         to->i5 = from->i5;
 927         to->i6 = from->i6;
 928         to->i7 = from->i7;
 929     }
 930     if (flags & CONTEXT_FLOATING_POINT)
 931     {
 932         /* FIXME */
 933     }
 934 #elif defined(__powerpc__)
 935     /* Has no CPU id */
 936     if (flags & CONTEXT_CONTROL)
 937     {
 938         to->Msr = from->Msr;
 939         to->Ctr = from->Ctr;
 940         to->Iar = from->Iar;
 941     }
 942     if (flags & CONTEXT_INTEGER)
 943     {
 944         to->Gpr0  = from->Gpr0;
 945         to->Gpr1  = from->Gpr1;
 946         to->Gpr2  = from->Gpr2;
 947         to->Gpr3  = from->Gpr3;
 948         to->Gpr4  = from->Gpr4;
 949         to->Gpr5  = from->Gpr5;
 950         to->Gpr6  = from->Gpr6;
 951         to->Gpr7  = from->Gpr7;
 952         to->Gpr8  = from->Gpr8;
 953         to->Gpr9  = from->Gpr9;
 954         to->Gpr10 = from->Gpr10;
 955         to->Gpr11 = from->Gpr11;
 956         to->Gpr12 = from->Gpr12;
 957         to->Gpr13 = from->Gpr13;
 958         to->Gpr14 = from->Gpr14;
 959         to->Gpr15 = from->Gpr15;
 960         to->Gpr16 = from->Gpr16;
 961         to->Gpr17 = from->Gpr17;
 962         to->Gpr18 = from->Gpr18;
 963         to->Gpr19 = from->Gpr19;
 964         to->Gpr20 = from->Gpr20;
 965         to->Gpr21 = from->Gpr21;
 966         to->Gpr22 = from->Gpr22;
 967         to->Gpr23 = from->Gpr23;
 968         to->Gpr24 = from->Gpr24;
 969         to->Gpr25 = from->Gpr25;
 970         to->Gpr26 = from->Gpr26;
 971         to->Gpr27 = from->Gpr27;
 972         to->Gpr28 = from->Gpr28;
 973         to->Gpr29 = from->Gpr29;
 974         to->Gpr30 = from->Gpr30;
 975         to->Gpr31 = from->Gpr31;
 976         to->Xer   = from->Xer;
 977         to->Cr    = from->Cr;
 978     }
 979     if (flags & CONTEXT_FLOATING_POINT)
 980     {
 981         to->Fpr0  = from->Fpr0;
 982         to->Fpr1  = from->Fpr1;
 983         to->Fpr2  = from->Fpr2;
 984         to->Fpr3  = from->Fpr3;
 985         to->Fpr4  = from->Fpr4;
 986         to->Fpr5  = from->Fpr5;
 987         to->Fpr6  = from->Fpr6;
 988         to->Fpr7  = from->Fpr7;
 989         to->Fpr8  = from->Fpr8;
 990         to->Fpr9  = from->Fpr9;
 991         to->Fpr10 = from->Fpr10;
 992         to->Fpr11 = from->Fpr11;
 993         to->Fpr12 = from->Fpr12;
 994         to->Fpr13 = from->Fpr13;
 995         to->Fpr14 = from->Fpr14;
 996         to->Fpr15 = from->Fpr15;
 997         to->Fpr16 = from->Fpr16;
 998         to->Fpr17 = from->Fpr17;
 999         to->Fpr18 = from->Fpr18;
1000         to->Fpr19 = from->Fpr19;
1001         to->Fpr20 = from->Fpr20;
1002         to->Fpr21 = from->Fpr21;
1003         to->Fpr22 = from->Fpr22;
1004         to->Fpr23 = from->Fpr23;
1005         to->Fpr24 = from->Fpr24;
1006         to->Fpr25 = from->Fpr25;
1007         to->Fpr26 = from->Fpr26;
1008         to->Fpr27 = from->Fpr27;
1009         to->Fpr28 = from->Fpr28;
1010         to->Fpr29 = from->Fpr29;
1011         to->Fpr30 = from->Fpr30;
1012         to->Fpr31 = from->Fpr31;
1013         to->Fpscr = from->Fpscr;
1014     }
1015 #else
1016 #error You must implement context copying for your CPU
1017 #endif
1018 }
1019
1020
1021 /***********************************************************************
1022  *              NtGetContextThread  (NTDLL.@)
1023  *              ZwGetContextThread  (NTDLL.@)
1024  */
1025 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1026 {
1027     NTSTATUS ret;
1028     CONTEXT ctx;
1029     DWORD dummy, i;
1030     DWORD needed_flags = context->ContextFlags;
1031     BOOL self = (handle == GetCurrentThread());
1032
1033 #ifdef __i386__
1034     /* on i386 debug registers always require a server call */
1035     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1036 #endif
1037
1038     if (!self)
1039     {
1040         SERVER_START_REQ( get_thread_context )
1041         {
1042             req->handle  = handle;
1043             req->flags   = context->ContextFlags;
1044             req->suspend = 0;
1045             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1046             ret = wine_server_call( req );
1047             self = reply->self;
1048         }
1049         SERVER_END_REQ;
1050
1051         if (ret == STATUS_PENDING)
1052         {
1053             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1054             {
1055                 for (i = 0; i < 100; i++)
1056                 {
1057                     SERVER_START_REQ( get_thread_context )
1058                     {
1059                         req->handle  = handle;
1060                         req->flags   = context->ContextFlags;
1061                         req->suspend = 0;
1062                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1063                         ret = wine_server_call( req );
1064                     }
1065                     SERVER_END_REQ;
1066                     if (ret != STATUS_PENDING) break;
1067                     NtYieldExecution();
1068                 }
1069                 NtResumeThread( handle, &dummy );
1070             }
1071             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1072         }
1073         if (ret) return ret;
1074         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1075         needed_flags &= ~ctx.ContextFlags;
1076     }
1077
1078     if (self)
1079     {
1080         if (needed_flags)
1081         {
1082             get_cpu_context( &ctx );
1083             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1084         }
1085 #ifdef __i386__
1086         /* update the cached version of the debug registers */
1087         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1088         {
1089             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1090             regs->dr0 = context->Dr0;
1091             regs->dr1 = context->Dr1;
1092             regs->dr2 = context->Dr2;
1093             regs->dr3 = context->Dr3;
1094             regs->dr6 = context->Dr6;
1095             regs->dr7 = context->Dr7;
1096         }
1097 #endif
1098     }
1099     return STATUS_SUCCESS;
1100 }
1101
1102
1103 /******************************************************************************
1104  *              NtQueryInformationThread  (NTDLL.@)
1105  *              ZwQueryInformationThread  (NTDLL.@)
1106  */
1107 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1108                                           void *data, ULONG length, ULONG *ret_len )
1109 {
1110     NTSTATUS status;
1111
1112     switch(class)
1113     {
1114     case ThreadBasicInformation:
1115         {
1116             THREAD_BASIC_INFORMATION info;
1117
1118             SERVER_START_REQ( get_thread_info )
1119             {
1120                 req->handle = handle;
1121                 req->tid_in = 0;
1122                 if (!(status = wine_server_call( req )))
1123                 {
1124                     info.ExitStatus             = reply->exit_code;
1125                     info.TebBaseAddress         = reply->teb;
1126                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
1127                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
1128                     info.AffinityMask           = reply->affinity;
1129                     info.Priority               = reply->priority;
1130                     info.BasePriority           = reply->priority;  /* FIXME */
1131                 }
1132             }
1133             SERVER_END_REQ;
1134             if (status == STATUS_SUCCESS)
1135             {
1136                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1137                 if (ret_len) *ret_len = min( length, sizeof(info) );
1138             }
1139         }
1140         return status;
1141     case ThreadTimes:
1142         {
1143             KERNEL_USER_TIMES   kusrt;
1144             /* We need to do a server call to get the creation time or exit time */
1145             /* This works on any thread */
1146             SERVER_START_REQ( get_thread_info )
1147             {
1148                 req->handle = handle;
1149                 req->tid_in = 0;
1150                 status = wine_server_call( req );
1151                 if (status == STATUS_SUCCESS)
1152                 {
1153                     NTDLL_from_server_abstime( &kusrt.CreateTime, &reply->creation_time );
1154                     NTDLL_from_server_abstime( &kusrt.ExitTime, &reply->exit_time );
1155                 }
1156             }
1157             SERVER_END_REQ;
1158             if (status == STATUS_SUCCESS)
1159             {
1160                 /* We call times(2) for kernel time or user time */
1161                 /* We can only (portably) do this for the current thread */
1162                 if (handle == GetCurrentThread())
1163                 {
1164                     struct tms time_buf;
1165                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1166
1167                     times(&time_buf);
1168                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1169                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1170                 }
1171                 else
1172                 {
1173                     kusrt.KernelTime.QuadPart = 0;
1174                     kusrt.UserTime.QuadPart = 0;
1175                     FIXME("Cannot get kerneltime or usertime of other threads\n");
1176                 }
1177                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1178                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1179             }
1180         }
1181         return status;
1182     case ThreadDescriptorTableEntry:
1183         {
1184 #ifdef __i386__
1185             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1186             if (length < sizeof(*tdi))
1187                 status = STATUS_INFO_LENGTH_MISMATCH;
1188             else if (!(tdi->Selector & 4))  /* GDT selector */
1189             {
1190                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1191                 status = STATUS_SUCCESS;
1192                 if (!sel)  /* null selector */
1193                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1194                 else
1195                 {
1196                     tdi->Entry.BaseLow                   = 0;
1197                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1198                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1199                     tdi->Entry.LimitLow                  = 0xffff;
1200                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1201                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1202                     tdi->Entry.HighWord.Bits.Sys         = 0;
1203                     tdi->Entry.HighWord.Bits.Pres        = 1;
1204                     tdi->Entry.HighWord.Bits.Granularity = 1;
1205                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1206                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1207                     /* it has to be one of the system GDT selectors */
1208                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1209                     {
1210                         if (sel == (wine_get_cs() & ~3))
1211                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1212                         else status = STATUS_ACCESS_DENIED;
1213                     }
1214                 }
1215             }
1216             else
1217             {
1218                 SERVER_START_REQ( get_selector_entry )
1219                 {
1220                     req->handle = handle;
1221                     req->entry = tdi->Selector >> 3;
1222                     status = wine_server_call( req );
1223                     if (!status)
1224                     {
1225                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1226                             status = STATUS_ACCESS_VIOLATION;
1227                         else
1228                         {
1229                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1230                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1231                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1232                         }
1233                     }
1234                 }
1235                 SERVER_END_REQ;
1236             }
1237             if (status == STATUS_SUCCESS && ret_len)
1238                 /* yes, that's a bit strange, but it's the way it is */
1239                 *ret_len = sizeof(LDT_ENTRY);
1240 #else
1241             status = STATUS_NOT_IMPLEMENTED;
1242 #endif
1243             return status;
1244         }
1245     case ThreadAmILastThread:
1246         {
1247             SERVER_START_REQ(get_thread_info)
1248             {
1249                 req->handle = handle;
1250                 req->tid_in = 0;
1251                 status = wine_server_call( req );
1252                 if (status == STATUS_SUCCESS)
1253                 {
1254                     BOOLEAN last = reply->last;
1255                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1256                     if (ret_len) *ret_len = min( length, sizeof(last) );
1257                 }
1258             }
1259             SERVER_END_REQ;
1260             return status;
1261         }
1262     case ThreadPriority:
1263     case ThreadBasePriority:
1264     case ThreadAffinityMask:
1265     case ThreadImpersonationToken:
1266     case ThreadEnableAlignmentFaultFixup:
1267     case ThreadEventPair_Reusable:
1268     case ThreadQuerySetWin32StartAddress:
1269     case ThreadZeroTlsCell:
1270     case ThreadPerformanceCount:
1271     case ThreadIdealProcessor:
1272     case ThreadPriorityBoost:
1273     case ThreadSetTlsArrayAddress:
1274     case ThreadIsIoPending:
1275     default:
1276         FIXME( "info class %d not supported yet\n", class );
1277         return STATUS_NOT_IMPLEMENTED;
1278     }
1279 }
1280
1281
1282 /******************************************************************************
1283  *              NtSetInformationThread  (NTDLL.@)
1284  *              ZwSetInformationThread  (NTDLL.@)
1285  */
1286 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1287                                         LPCVOID data, ULONG length )
1288 {
1289     NTSTATUS status;
1290     switch(class)
1291     {
1292     case ThreadZeroTlsCell:
1293         if (handle == GetCurrentThread())
1294         {
1295             LIST_ENTRY *entry;
1296             DWORD index;
1297
1298             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1299             index = *(const DWORD *)data;
1300             if (index < TLS_MINIMUM_AVAILABLE)
1301             {
1302                 RtlAcquirePebLock();
1303                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1304                 {
1305                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1306                     teb->TlsSlots[index] = 0;
1307                 }
1308                 RtlReleasePebLock();
1309             }
1310             else
1311             {
1312                 index -= TLS_MINIMUM_AVAILABLE;
1313                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1314                     return STATUS_INVALID_PARAMETER;
1315                 RtlAcquirePebLock();
1316                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1317                 {
1318                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1319                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1320                 }
1321                 RtlReleasePebLock();
1322             }
1323             return STATUS_SUCCESS;
1324         }
1325         FIXME( "ZeroTlsCell not supported on other threads\n" );
1326         return STATUS_NOT_IMPLEMENTED;
1327
1328     case ThreadImpersonationToken:
1329         {
1330             const HANDLE *phToken = data;
1331             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1332             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1333             SERVER_START_REQ( set_thread_info )
1334             {
1335                 req->handle   = handle;
1336                 req->token    = *phToken;
1337                 req->mask     = SET_THREAD_INFO_TOKEN;
1338                 status = wine_server_call( req );
1339             }
1340             SERVER_END_REQ;
1341         }
1342         return status;
1343     case ThreadBasePriority:
1344         {
1345             const DWORD *pprio = data;
1346             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1347             SERVER_START_REQ( set_thread_info )
1348             {
1349                 req->handle   = handle;
1350                 req->priority = *pprio;
1351                 req->mask     = SET_THREAD_INFO_PRIORITY;
1352                 status = wine_server_call( req );
1353             }
1354             SERVER_END_REQ;
1355         }
1356         return status;
1357     case ThreadAffinityMask:
1358         {
1359             const DWORD *paff = data;
1360             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1361             SERVER_START_REQ( set_thread_info )
1362             {
1363                 req->handle   = handle;
1364                 req->affinity = *paff;
1365                 req->mask     = SET_THREAD_INFO_AFFINITY;
1366                 status = wine_server_call( req );
1367             }
1368             SERVER_END_REQ;
1369         }
1370         return status;
1371     case ThreadBasicInformation:
1372     case ThreadTimes:
1373     case ThreadPriority:
1374     case ThreadDescriptorTableEntry:
1375     case ThreadEnableAlignmentFaultFixup:
1376     case ThreadEventPair_Reusable:
1377     case ThreadQuerySetWin32StartAddress:
1378     case ThreadPerformanceCount:
1379     case ThreadAmILastThread:
1380     case ThreadIdealProcessor:
1381     case ThreadPriorityBoost:
1382     case ThreadSetTlsArrayAddress:
1383     case ThreadIsIoPending:
1384     default:
1385         FIXME( "info class %d not supported yet\n", class );
1386         return STATUS_NOT_IMPLEMENTED;
1387     }
1388 }
1389
1390
1391 /**********************************************************************
1392  *           NtCurrentTeb   (NTDLL.@)
1393  */
1394 #if defined(__i386__) && defined(__GNUC__)
1395
1396 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1397
1398 #elif defined(__i386__) && defined(_MSC_VER)
1399
1400 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1401
1402 #else
1403
1404 /**********************************************************************/
1405
1406 TEB * WINAPI NtCurrentTeb(void)
1407 {
1408     return pthread_functions.get_current_teb();
1409 }
1410
1411 #endif  /* __i386__ */