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 #ifdef __i386__
 353 /* wrapper for apps that don't declare the thread function correctly */
 354 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 355 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 356                   "pushl %ebp\n\t"
 357                   "movl %esp,%ebp\n\t"
 358                   "subl $4,%esp\n\t"
 359                   "pushl 12(%ebp)\n\t"
 360                   "movl 8(%ebp),%eax\n\t"
 361                   "call *%eax\n\t"
 362                   "leave\n\t"
 363                   "ret" );
 364 #else
 365 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 366 {
 367     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 368     return func( arg );
 369 }
 370 #endif
 371
 372 /***********************************************************************
 373  *           call_thread_func
 374  *
 375  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 376  */
 377 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 378 {
 379     DWORD exit_code;
 380     BOOL last;
 381
 382     MODULE_DllThreadAttach( NULL );
 383
 384     if (TRACE_ON(relay))
 385         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 386
 387     exit_code = call_thread_entry_point( rtl_func, arg );
 388
 389     /* send the exit code to the server */
 390     SERVER_START_REQ( terminate_thread )
 391     {
 392         req->handle    = GetCurrentThread();
 393         req->exit_code = exit_code;
 394         wine_server_call( req );
 395         last = reply->last;
 396     }
 397     SERVER_END_REQ;
 398
 399     if (last)
 400     {
 401         LdrShutdownProcess();
 402         exit( exit_code );
 403     }
 404     else
 405     {
 406         LdrShutdownThread();
 407         server_exit_thread( exit_code );
 408     }
 409 }
 410
 411
 412 /***********************************************************************
 413  *           start_thread
 414  *
 415  * Startup routine for a newly created thread.
 416  */
 417 static void start_thread( struct wine_pthread_thread_info *info )
 418 {
 419     TEB *teb = info->teb_base;
 420     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 421     struct startup_info *startup_info = (struct startup_info *)info;
 422     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 423     void *arg = startup_info->entry_arg;
 424     struct debug_info debug_info;
 425     SIZE_T size, page_size = getpagesize();
 426
 427     debug_info.str_pos = debug_info.strings;
 428     debug_info.out_pos = debug_info.output;
 429     thread_data->debug_info = &debug_info;
 430
 431     pthread_functions.init_current_teb( info );
 432     SIGNAL_Init();
 433     server_init_thread( info->pid, info->tid, func );
 434     pthread_functions.init_thread( info );
 435
 436     /* allocate a memory view for the stack */
 437     size = info->stack_size;
 438     teb->DeallocationStack = info->stack_base;
 439     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 440                              &size, MEM_SYSTEM, PAGE_READWRITE );
 441     /* limit is lower than base since the stack grows down */
 442     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 443     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 444
 445     /* setup the guard page */
 446     size = page_size;
 447     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 448
 449     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 450
 451     RtlAcquirePebLock();
 452     InsertHeadList( &tls_links, &teb->TlsLinks );
 453     RtlReleasePebLock();
 454
 455     /* NOTE: Windows does not have an exception handler around the call to
 456      * the thread attach. We do for ease of debugging */
 457     if (get_unhandled_exception_filter())
 458     {
 459         __TRY
 460         {
 461             call_thread_func( func, arg );
 462         }
 463         __EXCEPT(get_unhandled_exception_filter())
 464         {
 465             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 466         }
 467         __ENDTRY
 468     }
 469     else
 470         call_thread_func( func, arg );
 471 }
 472
 473
 474 /***********************************************************************
 475  *              RtlCreateUserThread   (NTDLL.@)
 476  */
 477 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 478                                      BOOLEAN suspended, PVOID stack_addr,
 479                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 480                                      PRTL_THREAD_START_ROUTINE start, void *param,
 481                                      HANDLE *handle_ptr, CLIENT_ID *id )
 482 {
 483     sigset_t sigset;
 484     struct ntdll_thread_data *thread_data;
 485     struct ntdll_thread_regs *thread_regs = NULL;
 486     struct startup_info *info = NULL;
 487     void *addr = NULL;
 488     HANDLE handle = 0;
 489     TEB *teb;
 490     DWORD tid = 0;
 491     int request_pipe[2];
 492     NTSTATUS status;
 493     SIZE_T size, page_size = getpagesize();
 494
 495     if (process != NtCurrentProcess())
 496     {
 497         apc_call_t call;
 498         apc_result_t result;
 499
 500         call.create_thread.type    = APC_CREATE_THREAD;
 501         call.create_thread.func    = start;
 502         call.create_thread.arg     = param;
 503         call.create_thread.reserve = stack_reserve;
 504         call.create_thread.commit  = stack_commit;
 505         call.create_thread.suspend = suspended;
 506         status = NTDLL_queue_process_apc( process, &call, &result );
 507         if (status != STATUS_SUCCESS) return status;
 508
 509         if (result.create_thread.status == STATUS_SUCCESS)
 510         {
 511             if (id) id->UniqueThread = (HANDLE)result.create_thread.tid;
 512             if (handle_ptr) *handle_ptr = result.create_thread.handle;
 513             else NtClose( result.create_thread.handle );
 514         }
 515         return result.create_thread.status;
 516     }
 517
 518     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 519     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 520     wine_server_send_fd( request_pipe[0] );
 521
 522     SERVER_START_REQ( new_thread )
 523     {
 524         req->access     = THREAD_ALL_ACCESS;
 525         req->attributes = 0;  /* FIXME */
 526         req->suspend    = suspended;
 527         req->request_fd = request_pipe[0];
 528         if (!(status = wine_server_call( req )))
 529         {
 530             handle = reply->handle;
 531             tid = reply->tid;
 532         }
 533         close( request_pipe[0] );
 534     }
 535     SERVER_END_REQ;
 536
 537     if (status)
 538     {
 539         close( request_pipe[1] );
 540         return status;
 541     }
 542
 543     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 544
 545     addr = NULL;
 546     size = sigstack_total_size;
 547     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 548                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 549         goto error;
 550     teb = addr;
 551     teb->Peb = NtCurrentTeb()->Peb;
 552     info = (struct startup_info *)(teb + 1);
 553     info->pthread_info.teb_size = size;
 554     if ((status = init_teb( teb ))) goto error;
 555
 556     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 557     teb->ClientId.UniqueThread  = (HANDLE)tid;
 558
 559     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 560     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 561     thread_data->request_fd  = request_pipe[1];
 562
 563     info->pthread_info.teb_base = teb;
 564     info->pthread_info.teb_sel  = thread_regs->fs;
 565
 566     /* inherit debug registers from parent thread */
 567     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 568     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 569     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 570     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 571     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 572     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 573
 574     if (!stack_reserve || !stack_commit)
 575     {
 576         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 577         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 578         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 579     }
 580     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 581     stack_reserve += page_size;  /* for the guard page */
 582     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 583     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 584
 585     info->pthread_info.stack_base = NULL;
 586     info->pthread_info.stack_size = stack_reserve;
 587     info->pthread_info.entry      = start_thread;
 588     info->entry_point             = start;
 589     info->entry_arg               = param;
 590
 591     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 592     {
 593         status = STATUS_NO_MEMORY;
 594         goto error;
 595     }
 596     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 597
 598     if (id) id->UniqueThread = (HANDLE)tid;
 599     if (handle_ptr) *handle_ptr = handle;
 600     else NtClose( handle );
 601
 602     return STATUS_SUCCESS;
 603
 604 error:
 605     if (thread_regs) wine_ldt_free_fs( thread_regs->fs );
 606     if (addr)
 607     {
 608         SIZE_T size = 0;
 609         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 610     }
 611     if (handle) NtClose( handle );
 612     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 613     close( request_pipe[1] );
 614     return status;
 615 }
 616
 617
 618 /***********************************************************************
 619  *           RtlExitUserThread  (NTDLL.@)
 620  */
 621 void WINAPI RtlExitUserThread( ULONG status )
 622 {
 623     LdrShutdownThread();
 624     server_exit_thread( status );
 625 }
 626
 627
 628 /***********************************************************************
 629  *              NtOpenThread   (NTDLL.@)
 630  *              ZwOpenThread   (NTDLL.@)
 631  */
 632 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 633                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 634 {
 635     NTSTATUS ret;
 636
 637     SERVER_START_REQ( open_thread )
 638     {
 639         req->tid        = (thread_id_t)id->UniqueThread;
 640         req->access     = access;
 641         req->attributes = attr ? attr->Attributes : 0;
 642         ret = wine_server_call( req );
 643         *handle = reply->handle;
 644     }
 645     SERVER_END_REQ;
 646     return ret;
 647 }
 648
 649
 650 /******************************************************************************
 651  *              NtSuspendThread   (NTDLL.@)
 652  *              ZwSuspendThread   (NTDLL.@)
 653  */
 654 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 655 {
 656     NTSTATUS ret;
 657
 658     SERVER_START_REQ( suspend_thread )
 659     {
 660         req->handle = handle;
 661         if (!(ret = wine_server_call( req ))) *count = reply->count;
 662     }
 663     SERVER_END_REQ;
 664     return ret;
 665 }
 666
 667
 668 /******************************************************************************
 669  *              NtResumeThread   (NTDLL.@)
 670  *              ZwResumeThread   (NTDLL.@)
 671  */
 672 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 673 {
 674     NTSTATUS ret;
 675
 676     SERVER_START_REQ( resume_thread )
 677     {
 678         req->handle = handle;
 679         if (!(ret = wine_server_call( req ))) *count = reply->count;
 680     }
 681     SERVER_END_REQ;
 682     return ret;
 683 }
 684
 685
 686 /******************************************************************************
 687  *              NtAlertResumeThread   (NTDLL.@)
 688  *              ZwAlertResumeThread   (NTDLL.@)
 689  */
 690 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 691 {
 692     FIXME( "stub: should alert thread %p\n", handle );
 693     return NtResumeThread( handle, count );
 694 }
 695
 696
 697 /******************************************************************************
 698  *              NtAlertThread   (NTDLL.@)
 699  *              ZwAlertThread   (NTDLL.@)
 700  */
 701 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 702 {
 703     FIXME( "stub: %p\n", handle );
 704     return STATUS_NOT_IMPLEMENTED;
 705 }
 706
 707
 708 /******************************************************************************
 709  *              NtTerminateThread  (NTDLL.@)
 710  *              ZwTerminateThread  (NTDLL.@)
 711  */
 712 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 713 {
 714     NTSTATUS ret;
 715     BOOL self, last;
 716
 717     SERVER_START_REQ( terminate_thread )
 718     {
 719         req->handle    = handle;
 720         req->exit_code = exit_code;
 721         ret = wine_server_call( req );
 722         self = !ret && reply->self;
 723         last = reply->last;
 724     }
 725     SERVER_END_REQ;
 726
 727     if (self)
 728     {
 729         if (last) exit( exit_code );
 730         else server_abort_thread( exit_code );
 731     }
 732     return ret;
 733 }
 734
 735
 736 /******************************************************************************
 737  *              NtQueueApcThread  (NTDLL.@)
 738  */
 739 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 740                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 741 {
 742     NTSTATUS ret;
 743     SERVER_START_REQ( queue_apc )
 744     {
 745         req->thread = handle;
 746         if (func)
 747         {
 748             req->call.type         = APC_USER;
 749             req->call.user.func    = func;
 750             req->call.user.args[0] = arg1;
 751             req->call.user.args[1] = arg2;
 752             req->call.user.args[2] = arg3;
 753         }
 754         else req->call.type = APC_NONE;  /* wake up only */
 755         ret = wine_server_call( req );
 756     }
 757     SERVER_END_REQ;
 758     return ret;
 759 }
 760
 761
 762 /***********************************************************************
 763  *              NtSetContextThread  (NTDLL.@)
 764  *              ZwSetContextThread  (NTDLL.@)
 765  */
 766 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 767 {
 768     NTSTATUS ret;
 769     DWORD dummy, i;
 770     BOOL self = FALSE;
 771
 772 #ifdef __i386__
 773     /* on i386 debug registers always require a server call */
 774     self = (handle == GetCurrentThread());
 775     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 776     {
 777         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 778         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 779                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 780                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 781     }
 782 #endif
 783
 784     if (!self)
 785     {
 786         SERVER_START_REQ( set_thread_context )
 787         {
 788             req->handle  = handle;
 789             req->flags   = context->ContextFlags;
 790             req->suspend = 0;
 791             wine_server_add_data( req, context, sizeof(*context) );
 792             ret = wine_server_call( req );
 793             self = reply->self;
 794         }
 795         SERVER_END_REQ;
 796
 797         if (ret == STATUS_PENDING)
 798         {
 799             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 800             {
 801                 for (i = 0; i < 100; i++)
 802                 {
 803                     SERVER_START_REQ( set_thread_context )
 804                     {
 805                         req->handle  = handle;
 806                         req->flags   = context->ContextFlags;
 807                         req->suspend = 0;
 808                         wine_server_add_data( req, context, sizeof(*context) );
 809                         ret = wine_server_call( req );
 810                     }
 811                     SERVER_END_REQ;
 812                     if (ret != STATUS_PENDING) break;
 813                     NtYieldExecution();
 814                 }
 815                 NtResumeThread( handle, &dummy );
 816             }
 817             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 818         }
 819
 820         if (ret) return ret;
 821     }
 822
 823     if (self) set_cpu_context( context );
 824     return STATUS_SUCCESS;
 825 }
 826
 827
 828 /* copy a context structure according to the flags */
 829 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 830 {
 831 #ifdef __i386__
 832     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 833     if (flags & CONTEXT_INTEGER)
 834     {
 835         to->Eax = from->Eax;
 836         to->Ebx = from->Ebx;
 837         to->Ecx = from->Ecx;
 838         to->Edx = from->Edx;
 839         to->Esi = from->Esi;
 840         to->Edi = from->Edi;
 841     }
 842     if (flags & CONTEXT_CONTROL)
 843     {
 844         to->Ebp    = from->Ebp;
 845         to->Esp    = from->Esp;
 846         to->Eip    = from->Eip;
 847         to->SegCs  = from->SegCs;
 848         to->SegSs  = from->SegSs;
 849         to->EFlags = from->EFlags;
 850     }
 851     if (flags & CONTEXT_SEGMENTS)
 852     {
 853         to->SegDs = from->SegDs;
 854         to->SegEs = from->SegEs;
 855         to->SegFs = from->SegFs;
 856         to->SegGs = from->SegGs;
 857     }
 858     if (flags & CONTEXT_DEBUG_REGISTERS)
 859     {
 860         to->Dr0 = from->Dr0;
 861         to->Dr1 = from->Dr1;
 862         to->Dr2 = from->Dr2;
 863         to->Dr3 = from->Dr3;
 864         to->Dr6 = from->Dr6;
 865         to->Dr7 = from->Dr7;
 866     }
 867     if (flags & CONTEXT_FLOATING_POINT)
 868     {
 869         to->FloatSave = from->FloatSave;
 870     }
 871 #elif defined(__x86_64__)
 872     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 873     if (flags & CONTEXT_CONTROL)
 874     {
 875         to->Rbp    = from->Rbp;
 876         to->Rip    = from->Rip;
 877         to->Rsp    = from->Rsp;
 878         to->SegCs  = from->SegCs;
 879         to->SegSs  = from->SegSs;
 880         to->EFlags = from->EFlags;
 881         to->MxCsr  = from->MxCsr;
 882     }
 883     if (flags & CONTEXT_INTEGER)
 884     {
 885         to->Rax = from->Rax;
 886         to->Rcx = from->Rcx;
 887         to->Rdx = from->Rdx;
 888         to->Rbx = from->Rbx;
 889         to->Rsi = from->Rsi;
 890         to->Rdi = from->Rdi;
 891         to->R8  = from->R8;
 892         to->R9  = from->R9;
 893         to->R10 = from->R10;
 894         to->R11 = from->R11;
 895         to->R12 = from->R12;
 896         to->R13 = from->R13;
 897         to->R14 = from->R14;
 898         to->R15 = from->R15;
 899     }
 900     if (flags & CONTEXT_SEGMENTS)
 901     {
 902         to->SegDs = from->SegDs;
 903         to->SegEs = from->SegEs;
 904         to->SegFs = from->SegFs;
 905         to->SegGs = from->SegGs;
 906     }
 907     if (flags & CONTEXT_FLOATING_POINT)
 908     {
 909         to->u.FltSave = from->u.FltSave;
 910     }
 911     if (flags & CONTEXT_DEBUG_REGISTERS)
 912     {
 913         to->Dr0 = from->Dr0;
 914         to->Dr1 = from->Dr1;
 915         to->Dr2 = from->Dr2;
 916         to->Dr3 = from->Dr3;
 917         to->Dr6 = from->Dr6;
 918         to->Dr7 = from->Dr7;
 919     }
 920 #elif defined(__sparc__)
 921     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 922     if (flags & CONTEXT_CONTROL)
 923     {
 924         to->psr = from->psr;
 925         to->pc  = from->pc;
 926         to->npc = from->npc;
 927         to->y   = from->y;
 928         to->wim = from->wim;
 929         to->tbr = from->tbr;
 930     }
 931     if (flags & CONTEXT_INTEGER)
 932     {
 933         to->g0 = from->g0;
 934         to->g1 = from->g1;
 935         to->g2 = from->g2;
 936         to->g3 = from->g3;
 937         to->g4 = from->g4;
 938         to->g5 = from->g5;
 939         to->g6 = from->g6;
 940         to->g7 = from->g7;
 941         to->o0 = from->o0;
 942         to->o1 = from->o1;
 943         to->o2 = from->o2;
 944         to->o3 = from->o3;
 945         to->o4 = from->o4;
 946         to->o5 = from->o5;
 947         to->o6 = from->o6;
 948         to->o7 = from->o7;
 949         to->l0 = from->l0;
 950         to->l1 = from->l1;
 951         to->l2 = from->l2;
 952         to->l3 = from->l3;
 953         to->l4 = from->l4;
 954         to->l5 = from->l5;
 955         to->l6 = from->l6;
 956         to->l7 = from->l7;
 957         to->i0 = from->i0;
 958         to->i1 = from->i1;
 959         to->i2 = from->i2;
 960         to->i3 = from->i3;
 961         to->i4 = from->i4;
 962         to->i5 = from->i5;
 963         to->i6 = from->i6;
 964         to->i7 = from->i7;
 965     }
 966     if (flags & CONTEXT_FLOATING_POINT)
 967     {
 968         /* FIXME */
 969     }
 970 #elif defined(__powerpc__)
 971     /* Has no CPU id */
 972     if (flags & CONTEXT_CONTROL)
 973     {
 974         to->Msr = from->Msr;
 975         to->Ctr = from->Ctr;
 976         to->Iar = from->Iar;
 977     }
 978     if (flags & CONTEXT_INTEGER)
 979     {
 980         to->Gpr0  = from->Gpr0;
 981         to->Gpr1  = from->Gpr1;
 982         to->Gpr2  = from->Gpr2;
 983         to->Gpr3  = from->Gpr3;
 984         to->Gpr4  = from->Gpr4;
 985         to->Gpr5  = from->Gpr5;
 986         to->Gpr6  = from->Gpr6;
 987         to->Gpr7  = from->Gpr7;
 988         to->Gpr8  = from->Gpr8;
 989         to->Gpr9  = from->Gpr9;
 990         to->Gpr10 = from->Gpr10;
 991         to->Gpr11 = from->Gpr11;
 992         to->Gpr12 = from->Gpr12;
 993         to->Gpr13 = from->Gpr13;
 994         to->Gpr14 = from->Gpr14;
 995         to->Gpr15 = from->Gpr15;
 996         to->Gpr16 = from->Gpr16;
 997         to->Gpr17 = from->Gpr17;
 998         to->Gpr18 = from->Gpr18;
 999         to->Gpr19 = from->Gpr19;
1000         to->Gpr20 = from->Gpr20;
1001         to->Gpr21 = from->Gpr21;
1002         to->Gpr22 = from->Gpr22;
1003         to->Gpr23 = from->Gpr23;
1004         to->Gpr24 = from->Gpr24;
1005         to->Gpr25 = from->Gpr25;
1006         to->Gpr26 = from->Gpr26;
1007         to->Gpr27 = from->Gpr27;
1008         to->Gpr28 = from->Gpr28;
1009         to->Gpr29 = from->Gpr29;
1010         to->Gpr30 = from->Gpr30;
1011         to->Gpr31 = from->Gpr31;
1012         to->Xer   = from->Xer;
1013         to->Cr    = from->Cr;
1014     }
1015     if (flags & CONTEXT_FLOATING_POINT)
1016     {
1017         to->Fpr0  = from->Fpr0;
1018         to->Fpr1  = from->Fpr1;
1019         to->Fpr2  = from->Fpr2;
1020         to->Fpr3  = from->Fpr3;
1021         to->Fpr4  = from->Fpr4;
1022         to->Fpr5  = from->Fpr5;
1023         to->Fpr6  = from->Fpr6;
1024         to->Fpr7  = from->Fpr7;
1025         to->Fpr8  = from->Fpr8;
1026         to->Fpr9  = from->Fpr9;
1027         to->Fpr10 = from->Fpr10;
1028         to->Fpr11 = from->Fpr11;
1029         to->Fpr12 = from->Fpr12;
1030         to->Fpr13 = from->Fpr13;
1031         to->Fpr14 = from->Fpr14;
1032         to->Fpr15 = from->Fpr15;
1033         to->Fpr16 = from->Fpr16;
1034         to->Fpr17 = from->Fpr17;
1035         to->Fpr18 = from->Fpr18;
1036         to->Fpr19 = from->Fpr19;
1037         to->Fpr20 = from->Fpr20;
1038         to->Fpr21 = from->Fpr21;
1039         to->Fpr22 = from->Fpr22;
1040         to->Fpr23 = from->Fpr23;
1041         to->Fpr24 = from->Fpr24;
1042         to->Fpr25 = from->Fpr25;
1043         to->Fpr26 = from->Fpr26;
1044         to->Fpr27 = from->Fpr27;
1045         to->Fpr28 = from->Fpr28;
1046         to->Fpr29 = from->Fpr29;
1047         to->Fpr30 = from->Fpr30;
1048         to->Fpr31 = from->Fpr31;
1049         to->Fpscr = from->Fpscr;
1050     }
1051 #else
1052 #error You must implement context copying for your CPU
1053 #endif
1054 }
1055
1056
1057 /***********************************************************************
1058  *              NtGetContextThread  (NTDLL.@)
1059  *              ZwGetContextThread  (NTDLL.@)
1060  */
1061 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1062 {
1063     NTSTATUS ret;
1064     CONTEXT ctx;
1065     DWORD dummy, i;
1066     DWORD needed_flags = context->ContextFlags;
1067     BOOL self = (handle == GetCurrentThread());
1068
1069 #ifdef __i386__
1070     /* on i386 debug registers always require a server call */
1071     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1072 #endif
1073
1074     if (!self)
1075     {
1076         SERVER_START_REQ( get_thread_context )
1077         {
1078             req->handle  = handle;
1079             req->flags   = context->ContextFlags;
1080             req->suspend = 0;
1081             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1082             ret = wine_server_call( req );
1083             self = reply->self;
1084         }
1085         SERVER_END_REQ;
1086
1087         if (ret == STATUS_PENDING)
1088         {
1089             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1090             {
1091                 for (i = 0; i < 100; i++)
1092                 {
1093                     SERVER_START_REQ( get_thread_context )
1094                     {
1095                         req->handle  = handle;
1096                         req->flags   = context->ContextFlags;
1097                         req->suspend = 0;
1098                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1099                         ret = wine_server_call( req );
1100                     }
1101                     SERVER_END_REQ;
1102                     if (ret != STATUS_PENDING) break;
1103                     NtYieldExecution();
1104                 }
1105                 NtResumeThread( handle, &dummy );
1106             }
1107             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1108         }
1109         if (ret) return ret;
1110         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1111         needed_flags &= ~ctx.ContextFlags;
1112     }
1113
1114     if (self)
1115     {
1116         if (needed_flags)
1117         {
1118             get_cpu_context( &ctx );
1119             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1120         }
1121 #ifdef __i386__
1122         /* update the cached version of the debug registers */
1123         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1124         {
1125             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1126             regs->dr0 = context->Dr0;
1127             regs->dr1 = context->Dr1;
1128             regs->dr2 = context->Dr2;
1129             regs->dr3 = context->Dr3;
1130             regs->dr6 = context->Dr6;
1131             regs->dr7 = context->Dr7;
1132         }
1133 #endif
1134     }
1135     return STATUS_SUCCESS;
1136 }
1137
1138
1139 /******************************************************************************
1140  *              NtQueryInformationThread  (NTDLL.@)
1141  *              ZwQueryInformationThread  (NTDLL.@)
1142  */
1143 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1144                                           void *data, ULONG length, ULONG *ret_len )
1145 {
1146     NTSTATUS status;
1147
1148     switch(class)
1149     {
1150     case ThreadBasicInformation:
1151         {
1152             THREAD_BASIC_INFORMATION info;
1153
1154             SERVER_START_REQ( get_thread_info )
1155             {
1156                 req->handle = handle;
1157                 req->tid_in = 0;
1158                 if (!(status = wine_server_call( req )))
1159                 {
1160                     info.ExitStatus             = reply->exit_code;
1161                     info.TebBaseAddress         = reply->teb;
1162                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
1163                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
1164                     info.AffinityMask           = reply->affinity;
1165                     info.Priority               = reply->priority;
1166                     info.BasePriority           = reply->priority;  /* FIXME */
1167                 }
1168             }
1169             SERVER_END_REQ;
1170             if (status == STATUS_SUCCESS)
1171             {
1172                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1173                 if (ret_len) *ret_len = min( length, sizeof(info) );
1174             }
1175         }
1176         return status;
1177     case ThreadTimes:
1178         {
1179             KERNEL_USER_TIMES   kusrt;
1180             /* We need to do a server call to get the creation time or exit time */
1181             /* This works on any thread */
1182             SERVER_START_REQ( get_thread_info )
1183             {
1184                 req->handle = handle;
1185                 req->tid_in = 0;
1186                 status = wine_server_call( req );
1187                 if (status == STATUS_SUCCESS)
1188                 {
1189                     NTDLL_from_server_abstime( &kusrt.CreateTime, &reply->creation_time );
1190                     NTDLL_from_server_abstime( &kusrt.ExitTime, &reply->exit_time );
1191                 }
1192             }
1193             SERVER_END_REQ;
1194             if (status == STATUS_SUCCESS)
1195             {
1196                 /* We call times(2) for kernel time or user time */
1197                 /* We can only (portably) do this for the current thread */
1198                 if (handle == GetCurrentThread())
1199                 {
1200                     struct tms time_buf;
1201                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1202
1203                     times(&time_buf);
1204                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1205                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1206                 }
1207                 else
1208                 {
1209                     kusrt.KernelTime.QuadPart = 0;
1210                     kusrt.UserTime.QuadPart = 0;
1211                     FIXME("Cannot get kerneltime or usertime of other threads\n");
1212                 }
1213                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1214                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1215             }
1216         }
1217         return status;
1218     case ThreadDescriptorTableEntry:
1219         {
1220 #ifdef __i386__
1221             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1222             if (length < sizeof(*tdi))
1223                 status = STATUS_INFO_LENGTH_MISMATCH;
1224             else if (!(tdi->Selector & 4))  /* GDT selector */
1225             {
1226                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1227                 status = STATUS_SUCCESS;
1228                 if (!sel)  /* null selector */
1229                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1230                 else
1231                 {
1232                     tdi->Entry.BaseLow                   = 0;
1233                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1234                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1235                     tdi->Entry.LimitLow                  = 0xffff;
1236                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1237                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1238                     tdi->Entry.HighWord.Bits.Sys         = 0;
1239                     tdi->Entry.HighWord.Bits.Pres        = 1;
1240                     tdi->Entry.HighWord.Bits.Granularity = 1;
1241                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1242                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1243                     /* it has to be one of the system GDT selectors */
1244                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1245                     {
1246                         if (sel == (wine_get_cs() & ~3))
1247                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1248                         else status = STATUS_ACCESS_DENIED;
1249                     }
1250                 }
1251             }
1252             else
1253             {
1254                 SERVER_START_REQ( get_selector_entry )
1255                 {
1256                     req->handle = handle;
1257                     req->entry = tdi->Selector >> 3;
1258                     status = wine_server_call( req );
1259                     if (!status)
1260                     {
1261                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1262                             status = STATUS_ACCESS_VIOLATION;
1263                         else
1264                         {
1265                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1266                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1267                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1268                         }
1269                     }
1270                 }
1271                 SERVER_END_REQ;
1272             }
1273             if (status == STATUS_SUCCESS && ret_len)
1274                 /* yes, that's a bit strange, but it's the way it is */
1275                 *ret_len = sizeof(LDT_ENTRY);
1276 #else
1277             status = STATUS_NOT_IMPLEMENTED;
1278 #endif
1279             return status;
1280         }
1281     case ThreadAmILastThread:
1282         {
1283             SERVER_START_REQ(get_thread_info)
1284             {
1285                 req->handle = handle;
1286                 req->tid_in = 0;
1287                 status = wine_server_call( req );
1288                 if (status == STATUS_SUCCESS)
1289                 {
1290                     BOOLEAN last = reply->last;
1291                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1292                     if (ret_len) *ret_len = min( length, sizeof(last) );
1293                 }
1294             }
1295             SERVER_END_REQ;
1296             return status;
1297         }
1298     case ThreadPriority:
1299     case ThreadBasePriority:
1300     case ThreadAffinityMask:
1301     case ThreadImpersonationToken:
1302     case ThreadEnableAlignmentFaultFixup:
1303     case ThreadEventPair_Reusable:
1304     case ThreadQuerySetWin32StartAddress:
1305     case ThreadZeroTlsCell:
1306     case ThreadPerformanceCount:
1307     case ThreadIdealProcessor:
1308     case ThreadPriorityBoost:
1309     case ThreadSetTlsArrayAddress:
1310     case ThreadIsIoPending:
1311     default:
1312         FIXME( "info class %d not supported yet\n", class );
1313         return STATUS_NOT_IMPLEMENTED;
1314     }
1315 }
1316
1317
1318 /******************************************************************************
1319  *              NtSetInformationThread  (NTDLL.@)
1320  *              ZwSetInformationThread  (NTDLL.@)
1321  */
1322 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1323                                         LPCVOID data, ULONG length )
1324 {
1325     NTSTATUS status;
1326     switch(class)
1327     {
1328     case ThreadZeroTlsCell:
1329         if (handle == GetCurrentThread())
1330         {
1331             LIST_ENTRY *entry;
1332             DWORD index;
1333
1334             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1335             index = *(const DWORD *)data;
1336             if (index < TLS_MINIMUM_AVAILABLE)
1337             {
1338                 RtlAcquirePebLock();
1339                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1340                 {
1341                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1342                     teb->TlsSlots[index] = 0;
1343                 }
1344                 RtlReleasePebLock();
1345             }
1346             else
1347             {
1348                 index -= TLS_MINIMUM_AVAILABLE;
1349                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1350                     return STATUS_INVALID_PARAMETER;
1351                 RtlAcquirePebLock();
1352                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1353                 {
1354                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1355                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1356                 }
1357                 RtlReleasePebLock();
1358             }
1359             return STATUS_SUCCESS;
1360         }
1361         FIXME( "ZeroTlsCell not supported on other threads\n" );
1362         return STATUS_NOT_IMPLEMENTED;
1363
1364     case ThreadImpersonationToken:
1365         {
1366             const HANDLE *phToken = data;
1367             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1368             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1369             SERVER_START_REQ( set_thread_info )
1370             {
1371                 req->handle   = handle;
1372                 req->token    = *phToken;
1373                 req->mask     = SET_THREAD_INFO_TOKEN;
1374                 status = wine_server_call( req );
1375             }
1376             SERVER_END_REQ;
1377         }
1378         return status;
1379     case ThreadBasePriority:
1380         {
1381             const DWORD *pprio = data;
1382             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1383             SERVER_START_REQ( set_thread_info )
1384             {
1385                 req->handle   = handle;
1386                 req->priority = *pprio;
1387                 req->mask     = SET_THREAD_INFO_PRIORITY;
1388                 status = wine_server_call( req );
1389             }
1390             SERVER_END_REQ;
1391         }
1392         return status;
1393     case ThreadAffinityMask:
1394         {
1395             const DWORD *paff = data;
1396             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1397             SERVER_START_REQ( set_thread_info )
1398             {
1399                 req->handle   = handle;
1400                 req->affinity = *paff;
1401                 req->mask     = SET_THREAD_INFO_AFFINITY;
1402                 status = wine_server_call( req );
1403             }
1404             SERVER_END_REQ;
1405         }
1406         return status;
1407     case ThreadBasicInformation:
1408     case ThreadTimes:
1409     case ThreadPriority:
1410     case ThreadDescriptorTableEntry:
1411     case ThreadEnableAlignmentFaultFixup:
1412     case ThreadEventPair_Reusable:
1413     case ThreadQuerySetWin32StartAddress:
1414     case ThreadPerformanceCount:
1415     case ThreadAmILastThread:
1416     case ThreadIdealProcessor:
1417     case ThreadPriorityBoost:
1418     case ThreadSetTlsArrayAddress:
1419     case ThreadIsIoPending:
1420     default:
1421         FIXME( "info class %d not supported yet\n", class );
1422         return STATUS_NOT_IMPLEMENTED;
1423     }
1424 }
1425
1426
1427 /**********************************************************************
1428  *           NtCurrentTeb   (NTDLL.@)
1429  */
1430 #if defined(__i386__) && defined(__GNUC__)
1431
1432 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1433
1434 #elif defined(__i386__) && defined(_MSC_VER)
1435
1436 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1437
1438 #else
1439
1440 /**********************************************************************/
1441
1442 TEB * WINAPI NtCurrentTeb(void)
1443 {
1444     return pthread_functions.get_current_teb();
1445 }
1446
1447 #endif  /* __i386__ */