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

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <stdarg.h>
  26 #include <sys/types.h>
  27 #ifdef HAVE_SYS_MMAN_H
  28 #include <sys/mman.h>
  29 #endif
  30 #ifdef HAVE_SYS_TIMES_H
  31 #include <sys/times.h>
  32 #endif
  33
  34 #define NONAMELESSUNION
  35 #include "ntstatus.h"
  36 #define WIN32_NO_STATUS
  37 #include "winternl.h"
  38 #include "wine/library.h"
  39 #include "wine/server.h"
  40 #include "wine/pthread.h"
  41 #include "wine/debug.h"
  42 #include "ntdll_misc.h"
  43 #include "ddk/wdm.h"
  44 #include "wine/exception.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  47 WINE_DECLARE_DEBUG_CHANNEL(relay);
  48
  49 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
  50
  51 PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter = NULL;
  52
  53 /* info passed to a starting thread */
  54 struct startup_info
  55 {
  56     struct wine_pthread_thread_info pthread_info;
  57     PRTL_THREAD_START_ROUTINE       entry_point;
  58     void                           *entry_arg;
  59 };
  60
  61 static PEB_LDR_DATA ldr;
  62 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  63 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  64 static RTL_BITMAP tls_bitmap;
  65 static RTL_BITMAP tls_expansion_bitmap;
  66 static RTL_BITMAP fls_bitmap;
  67 static LIST_ENTRY tls_links;
  68 static size_t sigstack_total_size;
  69 static ULONG sigstack_zero_bits;
  70
  71 struct wine_pthread_functions pthread_functions = { NULL };
  72
  73
  74 static RTL_CRITICAL_SECTION ldt_section;
  75 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  76 {
  77     0, 0, &ldt_section,
  78     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  79       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  80 };
  81 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  82 static sigset_t ldt_sigset;
  83
  84 /***********************************************************************
  85  *           locking for LDT routines
  86  */
  87 static void ldt_lock(void)
  88 {
  89     sigset_t sigset;
  90
  91     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
  92     RtlEnterCriticalSection( &ldt_section );
  93     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  94 }
  95
  96 static void ldt_unlock(void)
  97 {
  98     if (ldt_section.RecursionCount == 1)
  99     {
 100         sigset_t sigset = ldt_sigset;
 101         RtlLeaveCriticalSection( &ldt_section );
 102         pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 103     }
 104     else RtlLeaveCriticalSection( &ldt_section );
 105 }
 106
 107
 108 /***********************************************************************
 109  *           init_teb
 110  */
 111 static inline NTSTATUS init_teb( TEB *teb )
 112 {
 113     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 114
 115     teb->Tib.ExceptionList = (void *)~0UL;
 116     teb->Tib.StackBase     = (void *)~0UL;
 117     teb->Tib.Self          = &teb->Tib;
 118     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 119     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 120
 121     if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 122     thread_data->request_fd = -1;
 123     thread_data->reply_fd   = -1;
 124     thread_data->wait_fd[0] = -1;
 125     thread_data->wait_fd[1] = -1;
 126
 127     return STATUS_SUCCESS;
 128 }
 129
 130
 131 /***********************************************************************
 132  *           fix_unicode_string
 133  *
 134  * Make sure the unicode string doesn't point beyond the end pointer
 135  */
 136 static inline void fix_unicode_string( UNICODE_STRING *str, const char *end_ptr )
 137 {
 138     if ((char *)str->Buffer >= end_ptr)
 139     {
 140         str->Length = str->MaximumLength = 0;
 141         str->Buffer = NULL;
 142         return;
 143     }
 144     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 145     {
 146         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 147     }
 148     if (str->Length >= str->MaximumLength)
 149     {
 150         if (str->MaximumLength >= sizeof(WCHAR))
 151             str->Length = str->MaximumLength - sizeof(WCHAR);
 152         else
 153             str->Length = str->MaximumLength = 0;
 154     }
 155 }
 156
 157
 158 /***********************************************************************
 159  *           init_user_process_params
 160  *
 161  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 162  */
 163 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 164 {
 165     void *ptr;
 166     SIZE_T env_size;
 167     NTSTATUS status;
 168     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 169
 170     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 171                                       MEM_COMMIT, PAGE_READWRITE );
 172     if (status != STATUS_SUCCESS) return status;
 173
 174     params->AllocationSize = info_size;
 175     NtCurrentTeb()->Peb->ProcessParameters = params;
 176
 177     SERVER_START_REQ( get_startup_info )
 178     {
 179         wine_server_set_reply( req, params, info_size );
 180         if (!(status = wine_server_call( req )))
 181         {
 182             info_size = wine_server_reply_size( reply );
 183             *exe_file = wine_server_ptr_handle( reply->exe_file );
 184             params->hStdInput  = wine_server_ptr_handle( reply->hstdin );
 185             params->hStdOutput = wine_server_ptr_handle( reply->hstdout );
 186             params->hStdError  = wine_server_ptr_handle( reply->hstderr );
 187         }
 188     }
 189     SERVER_END_REQ;
 190     if (status != STATUS_SUCCESS) return status;
 191
 192     if (params->Size > info_size) params->Size = info_size;
 193
 194     /* make sure the strings are valid */
 195     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 196     fix_unicode_string( &params->DllPath, (char *)info_size );
 197     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 198     fix_unicode_string( &params->CommandLine, (char *)info_size );
 199     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 200     fix_unicode_string( &params->Desktop, (char *)info_size );
 201     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 202     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 203
 204     /* environment needs to be a separate memory block */
 205     env_size = info_size - params->Size;
 206     if (!env_size) env_size = 1;
 207     ptr = NULL;
 208     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 209                                       MEM_COMMIT, PAGE_READWRITE );
 210     if (status != STATUS_SUCCESS) return status;
 211     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 212     params->Environment = ptr;
 213
 214     RtlNormalizeProcessParams( params );
 215     return status;
 216 }
 217
 218
 219 /***********************************************************************
 220  *           thread_init
 221  *
 222  * Setup the initial thread.
 223  *
 224  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 225  */
 226 HANDLE thread_init(void)
 227 {
 228     PEB *peb;
 229     TEB *teb;
 230     void *addr;
 231     SIZE_T size, info_size;
 232     HANDLE exe_file = 0;
 233     LARGE_INTEGER now;
 234     struct ntdll_thread_data *thread_data;
 235     struct wine_pthread_thread_info thread_info;
 236     static struct debug_info debug_info;  /* debug info for initial thread */
 237
 238     virtual_init();
 239
 240     /* reserve space for shared user data */
 241
 242     addr = (void *)0x7ffe0000;
 243     size = 0x10000;
 244     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 245     user_shared_data = addr;
 246
 247     /* allocate and initialize the PEB */
 248
 249     addr = NULL;
 250     size = sizeof(*peb);
 251     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 252                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 253     peb = addr;
 254
 255     peb->NumberOfProcessors = 1;
 256     peb->ProcessParameters  = &params;
 257     peb->TlsBitmap          = &tls_bitmap;
 258     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 259     peb->FlsBitmap          = &fls_bitmap;
 260     peb->LdrData            = &ldr;
 261     params.CurrentDirectory.DosPath.Buffer = current_dir;
 262     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 263     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 264     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 265     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 266                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 267     RtlInitializeBitMap( &fls_bitmap, peb->FlsBitmapBits, sizeof(peb->FlsBitmapBits) * 8 );
 268     InitializeListHead( &peb->FlsListHead );
 269     InitializeListHead( &ldr.InLoadOrderModuleList );
 270     InitializeListHead( &ldr.InMemoryOrderModuleList );
 271     InitializeListHead( &ldr.InInitializationOrderModuleList );
 272     InitializeListHead( &tls_links );
 273
 274     /* allocate and initialize the initial TEB */
 275
 276     sigstack_total_size = get_signal_stack_total_size();
 277     while (1U << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 278     assert( 1U << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 279     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 280     thread_info.teb_size = sigstack_total_size;
 281
 282     addr = NULL;
 283     size = sigstack_total_size;
 284     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 285                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 286     teb = addr;
 287     teb->Peb = peb;
 288     thread_info.teb_size = size;
 289     init_teb( teb );
 290     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 291     thread_data->debug_info = &debug_info;
 292     InsertHeadList( &tls_links, &teb->TlsLinks );
 293
 294     thread_info.stack_base = NULL;
 295     thread_info.stack_size = 0;
 296     thread_info.teb_base   = teb;
 297     thread_info.teb_sel    = thread_data->fs;
 298     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 299     pthread_functions.init_current_teb( &thread_info );
 300     pthread_functions.init_thread( &thread_info );
 301     virtual_init_threading();
 302
 303     debug_info.str_pos = debug_info.strings;
 304     debug_info.out_pos = debug_info.output;
 305     debug_init();
 306
 307     /* setup the server connection */
 308     server_init_process();
 309     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 310
 311     /* create the process heap */
 312     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 313     {
 314         MESSAGE( "wine: failed to create the process heap\n" );
 315         exit(1);
 316     }
 317
 318     /* allocate user parameters */
 319     if (info_size)
 320     {
 321         init_user_process_params( info_size, &exe_file );
 322     }
 323     else
 324     {
 325         /* This is wine specific: we have no parent (we're started from unix)
 326          * so, create a simple console with bare handles to unix stdio
 327          */
 328         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 329         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 330         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 331     }
 332
 333     /* initialize LDT locking */
 334     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 335
 336     /* initialize time values in user_shared_data */
 337     NtQuerySystemTime( &now );
 338     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 339     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 340     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 341     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 342     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 343     user_shared_data->TickCountMultiplier = 1 << 24;
 344
 345     pthread_init();
 346     return exe_file;
 347 }
 348
 349 #ifdef __i386__
 350 /* wrapper for apps that don't declare the thread function correctly */
 351 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 352 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 353                   "pushl %ebp\n\t"
 354                   "movl %esp,%ebp\n\t"
 355                   "subl $4,%esp\n\t"
 356                   "pushl 12(%ebp)\n\t"
 357                   "movl 8(%ebp),%eax\n\t"
 358                   "call *%eax\n\t"
 359                   "leave\n\t"
 360                   "ret" )
 361 #else
 362 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 363 {
 364     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 365     return func( arg );
 366 }
 367 #endif
 368
 369 /***********************************************************************
 370  *           call_thread_func
 371  *
 372  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 373  */
 374 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 375 {
 376     DWORD exit_code;
 377     BOOL last;
 378
 379     MODULE_DllThreadAttach( NULL );
 380
 381     if (TRACE_ON(relay))
 382         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 383
 384     exit_code = call_thread_entry_point( rtl_func, arg );
 385
 386     /* send the exit code to the server */
 387     SERVER_START_REQ( terminate_thread )
 388     {
 389         req->handle    = wine_server_obj_handle( GetCurrentThread() );
 390         req->exit_code = exit_code;
 391         wine_server_call( req );
 392         last = reply->last;
 393     }
 394     SERVER_END_REQ;
 395
 396     if (last)
 397     {
 398         LdrShutdownProcess();
 399         exit( exit_code );
 400     }
 401     else
 402     {
 403         LdrShutdownThread();
 404         server_exit_thread( exit_code );
 405     }
 406 }
 407
 408
 409 /***********************************************************************
 410  *           start_thread
 411  *
 412  * Startup routine for a newly created thread.
 413  */
 414 static void start_thread( struct wine_pthread_thread_info *info )
 415 {
 416     TEB *teb = info->teb_base;
 417     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 418     struct startup_info *startup_info = (struct startup_info *)info;
 419     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 420     void *arg = startup_info->entry_arg;
 421     struct debug_info debug_info;
 422
 423     debug_info.str_pos = debug_info.strings;
 424     debug_info.out_pos = debug_info.output;
 425     thread_data->debug_info = &debug_info;
 426
 427     pthread_functions.init_current_teb( info );
 428     signal_init_thread();
 429     server_init_thread( info->pid, info->tid, func );
 430     pthread_functions.init_thread( info );
 431     virtual_alloc_thread_stack( info->stack_base, info->stack_size );
 432     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 433
 434     RtlAcquirePebLock();
 435     InsertHeadList( &tls_links, &teb->TlsLinks );
 436     RtlReleasePebLock();
 437
 438     /* NOTE: Windows does not have an exception handler around the call to
 439      * the thread attach. We do for ease of debugging */
 440     if (unhandled_exception_filter)
 441     {
 442         __TRY
 443         {
 444             call_thread_func( func, arg );
 445         }
 446         __EXCEPT(unhandled_exception_filter)
 447         {
 448             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 449         }
 450         __ENDTRY
 451     }
 452     else
 453         call_thread_func( func, arg );
 454 }
 455
 456
 457 /***********************************************************************
 458  *              RtlCreateUserThread   (NTDLL.@)
 459  */
 460 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 461                                      BOOLEAN suspended, PVOID stack_addr,
 462                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 463                                      PRTL_THREAD_START_ROUTINE start, void *param,
 464                                      HANDLE *handle_ptr, CLIENT_ID *id )
 465 {
 466     sigset_t sigset;
 467     struct ntdll_thread_data *thread_data = NULL;
 468     struct ntdll_thread_regs *thread_regs;
 469     struct startup_info *info = NULL;
 470     void *addr = NULL;
 471     HANDLE handle = 0;
 472     TEB *teb;
 473     DWORD tid = 0;
 474     int request_pipe[2];
 475     NTSTATUS status;
 476     SIZE_T size, page_size = getpagesize();
 477
 478     if (process != NtCurrentProcess())
 479     {
 480         apc_call_t call;
 481         apc_result_t result;
 482
 483         memset( &call, 0, sizeof(call) );
 484
 485         call.create_thread.type    = APC_CREATE_THREAD;
 486         call.create_thread.func    = start;
 487         call.create_thread.arg     = param;
 488         call.create_thread.reserve = stack_reserve;
 489         call.create_thread.commit  = stack_commit;
 490         call.create_thread.suspend = suspended;
 491         status = NTDLL_queue_process_apc( process, &call, &result );
 492         if (status != STATUS_SUCCESS) return status;
 493
 494         if (result.create_thread.status == STATUS_SUCCESS)
 495         {
 496             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 497             if (handle_ptr) *handle_ptr = wine_server_ptr_handle( result.create_thread.handle );
 498             else NtClose( wine_server_ptr_handle( result.create_thread.handle ));
 499         }
 500         return result.create_thread.status;
 501     }
 502
 503     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 504     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 505     wine_server_send_fd( request_pipe[0] );
 506
 507     SERVER_START_REQ( new_thread )
 508     {
 509         req->access     = THREAD_ALL_ACCESS;
 510         req->attributes = 0;  /* FIXME */
 511         req->suspend    = suspended;
 512         req->request_fd = request_pipe[0];
 513         if (!(status = wine_server_call( req )))
 514         {
 515             handle = wine_server_ptr_handle( reply->handle );
 516             tid = reply->tid;
 517         }
 518         close( request_pipe[0] );
 519     }
 520     SERVER_END_REQ;
 521
 522     if (status)
 523     {
 524         close( request_pipe[1] );
 525         return status;
 526     }
 527
 528     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 529
 530     addr = NULL;
 531     size = sigstack_total_size;
 532     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 533                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 534         goto error;
 535     teb = addr;
 536     teb->Peb = NtCurrentTeb()->Peb;
 537     info = (struct startup_info *)(teb + 1);
 538     info->pthread_info.teb_size = size;
 539     if ((status = init_teb( teb ))) goto error;
 540
 541     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 542     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 543
 544     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 545     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 546     thread_data->request_fd  = request_pipe[1];
 547
 548     info->pthread_info.teb_base = teb;
 549     info->pthread_info.teb_sel  = thread_data->fs;
 550
 551     /* inherit debug registers from parent thread */
 552     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 553     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 554     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 555     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 556     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 557     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 558
 559     if (!stack_reserve || !stack_commit)
 560     {
 561         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 562         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 563         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 564     }
 565     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 566     stack_reserve += page_size;  /* for the guard page */
 567     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 568     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 569
 570     info->pthread_info.stack_base = NULL;
 571     info->pthread_info.stack_size = stack_reserve;
 572     info->pthread_info.entry      = start_thread;
 573     info->entry_point             = start;
 574     info->entry_arg               = param;
 575
 576     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 577     {
 578         status = STATUS_NO_MEMORY;
 579         goto error;
 580     }
 581     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 582
 583     if (id) id->UniqueThread = ULongToHandle(tid);
 584     if (handle_ptr) *handle_ptr = handle;
 585     else NtClose( handle );
 586
 587     return STATUS_SUCCESS;
 588
 589 error:
 590     if (thread_data) wine_ldt_free_fs( thread_data->fs );
 591     if (addr)
 592     {
 593         SIZE_T size = 0;
 594         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 595     }
 596     if (handle) NtClose( handle );
 597     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 598     close( request_pipe[1] );
 599     return status;
 600 }
 601
 602
 603 /***********************************************************************
 604  *           RtlExitUserThread  (NTDLL.@)
 605  */
 606 void WINAPI RtlExitUserThread( ULONG status )
 607 {
 608     BOOL last;
 609
 610     SERVER_START_REQ( terminate_thread )
 611     {
 612         /* send the exit code to the server */
 613         req->handle    = wine_server_obj_handle( GetCurrentThread() );
 614         req->exit_code = status;
 615         wine_server_call( req );
 616         last = reply->last;
 617     }
 618     SERVER_END_REQ;
 619
 620     if (last)
 621     {
 622         LdrShutdownProcess();
 623         exit( status );
 624     }
 625     else
 626     {
 627         LdrShutdownThread();
 628         server_exit_thread( status );
 629     }
 630 }
 631
 632
 633 /***********************************************************************
 634  *              NtOpenThread   (NTDLL.@)
 635  *              ZwOpenThread   (NTDLL.@)
 636  */
 637 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 638                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 639 {
 640     NTSTATUS ret;
 641
 642     SERVER_START_REQ( open_thread )
 643     {
 644         req->tid        = HandleToULong(id->UniqueThread);
 645         req->access     = access;
 646         req->attributes = attr ? attr->Attributes : 0;
 647         ret = wine_server_call( req );
 648         *handle = wine_server_ptr_handle( reply->handle );
 649     }
 650     SERVER_END_REQ;
 651     return ret;
 652 }
 653
 654
 655 /******************************************************************************
 656  *              NtSuspendThread   (NTDLL.@)
 657  *              ZwSuspendThread   (NTDLL.@)
 658  */
 659 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 660 {
 661     NTSTATUS ret;
 662
 663     SERVER_START_REQ( suspend_thread )
 664     {
 665         req->handle = wine_server_obj_handle( handle );
 666         if (!(ret = wine_server_call( req ))) *count = reply->count;
 667     }
 668     SERVER_END_REQ;
 669     return ret;
 670 }
 671
 672
 673 /******************************************************************************
 674  *              NtResumeThread   (NTDLL.@)
 675  *              ZwResumeThread   (NTDLL.@)
 676  */
 677 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 678 {
 679     NTSTATUS ret;
 680
 681     SERVER_START_REQ( resume_thread )
 682     {
 683         req->handle = wine_server_obj_handle( handle );
 684         if (!(ret = wine_server_call( req ))) *count = reply->count;
 685     }
 686     SERVER_END_REQ;
 687     return ret;
 688 }
 689
 690
 691 /******************************************************************************
 692  *              NtAlertResumeThread   (NTDLL.@)
 693  *              ZwAlertResumeThread   (NTDLL.@)
 694  */
 695 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 696 {
 697     FIXME( "stub: should alert thread %p\n", handle );
 698     return NtResumeThread( handle, count );
 699 }
 700
 701
 702 /******************************************************************************
 703  *              NtAlertThread   (NTDLL.@)
 704  *              ZwAlertThread   (NTDLL.@)
 705  */
 706 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 707 {
 708     FIXME( "stub: %p\n", handle );
 709     return STATUS_NOT_IMPLEMENTED;
 710 }
 711
 712
 713 /******************************************************************************
 714  *              NtTerminateThread  (NTDLL.@)
 715  *              ZwTerminateThread  (NTDLL.@)
 716  */
 717 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 718 {
 719     NTSTATUS ret;
 720     BOOL self, last;
 721
 722     SERVER_START_REQ( terminate_thread )
 723     {
 724         req->handle    = wine_server_obj_handle( handle );
 725         req->exit_code = exit_code;
 726         ret = wine_server_call( req );
 727         self = !ret && reply->self;
 728         last = reply->last;
 729     }
 730     SERVER_END_REQ;
 731
 732     if (self)
 733     {
 734         if (last) exit( exit_code );
 735         else server_abort_thread( exit_code );
 736     }
 737     return ret;
 738 }
 739
 740
 741 /******************************************************************************
 742  *              NtQueueApcThread  (NTDLL.@)
 743  */
 744 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 745                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 746 {
 747     NTSTATUS ret;
 748     SERVER_START_REQ( queue_apc )
 749     {
 750         req->thread = wine_server_obj_handle( handle );
 751         if (func)
 752         {
 753             req->call.type         = APC_USER;
 754             req->call.user.func    = func;
 755             req->call.user.args[0] = arg1;
 756             req->call.user.args[1] = arg2;
 757             req->call.user.args[2] = arg3;
 758         }
 759         else req->call.type = APC_NONE;  /* wake up only */
 760         ret = wine_server_call( req );
 761     }
 762     SERVER_END_REQ;
 763     return ret;
 764 }
 765
 766
 767 /***********************************************************************
 768  *              NtSetContextThread  (NTDLL.@)
 769  *              ZwSetContextThread  (NTDLL.@)
 770  */
 771 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 772 {
 773     NTSTATUS ret;
 774     DWORD dummy, i;
 775     BOOL self = FALSE;
 776
 777 #ifdef __i386__
 778     /* on i386 debug registers always require a server call */
 779     self = (handle == GetCurrentThread());
 780     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 781     {
 782         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 783         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 784                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 785                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 786     }
 787 #endif
 788
 789     if (!self)
 790     {
 791         SERVER_START_REQ( set_thread_context )
 792         {
 793             req->handle  = wine_server_obj_handle( handle );
 794             req->flags   = context->ContextFlags;
 795             req->suspend = 0;
 796             wine_server_add_data( req, context, sizeof(*context) );
 797             ret = wine_server_call( req );
 798             self = reply->self;
 799         }
 800         SERVER_END_REQ;
 801
 802         if (ret == STATUS_PENDING)
 803         {
 804             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 805             {
 806                 for (i = 0; i < 100; i++)
 807                 {
 808                     SERVER_START_REQ( set_thread_context )
 809                     {
 810                         req->handle  = wine_server_obj_handle( handle );
 811                         req->flags   = context->ContextFlags;
 812                         req->suspend = 0;
 813                         wine_server_add_data( req, context, sizeof(*context) );
 814                         ret = wine_server_call( req );
 815                     }
 816                     SERVER_END_REQ;
 817                     if (ret == STATUS_PENDING)
 818                     {
 819                         LARGE_INTEGER timeout;
 820                         timeout.QuadPart = -10000;
 821                         NtDelayExecution( FALSE, &timeout );
 822                     }
 823                     else break;
 824                 }
 825                 NtResumeThread( handle, &dummy );
 826             }
 827             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 828         }
 829
 830         if (ret) return ret;
 831     }
 832
 833     if (self) set_cpu_context( context );
 834     return STATUS_SUCCESS;
 835 }
 836
 837
 838 /* copy a context structure according to the flags */
 839 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 840 {
 841 #ifdef __i386__
 842     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 843     if (flags & CONTEXT_INTEGER)
 844     {
 845         to->Eax = from->Eax;
 846         to->Ebx = from->Ebx;
 847         to->Ecx = from->Ecx;
 848         to->Edx = from->Edx;
 849         to->Esi = from->Esi;
 850         to->Edi = from->Edi;
 851     }
 852     if (flags & CONTEXT_CONTROL)
 853     {
 854         to->Ebp    = from->Ebp;
 855         to->Esp    = from->Esp;
 856         to->Eip    = from->Eip;
 857         to->SegCs  = from->SegCs;
 858         to->SegSs  = from->SegSs;
 859         to->EFlags = from->EFlags;
 860     }
 861     if (flags & CONTEXT_SEGMENTS)
 862     {
 863         to->SegDs = from->SegDs;
 864         to->SegEs = from->SegEs;
 865         to->SegFs = from->SegFs;
 866         to->SegGs = from->SegGs;
 867     }
 868     if (flags & CONTEXT_DEBUG_REGISTERS)
 869     {
 870         to->Dr0 = from->Dr0;
 871         to->Dr1 = from->Dr1;
 872         to->Dr2 = from->Dr2;
 873         to->Dr3 = from->Dr3;
 874         to->Dr6 = from->Dr6;
 875         to->Dr7 = from->Dr7;
 876     }
 877     if (flags & CONTEXT_FLOATING_POINT)
 878     {
 879         to->FloatSave = from->FloatSave;
 880     }
 881     if (flags & CONTEXT_EXTENDED_REGISTERS)
 882     {
 883         memcpy( to->ExtendedRegisters, from->ExtendedRegisters, sizeof(to->ExtendedRegisters) );
 884     }
 885 #elif defined(__x86_64__)
 886     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 887     if (flags & CONTEXT_CONTROL)
 888     {
 889         to->Rbp    = from->Rbp;
 890         to->Rip    = from->Rip;
 891         to->Rsp    = from->Rsp;
 892         to->SegCs  = from->SegCs;
 893         to->SegSs  = from->SegSs;
 894         to->EFlags = from->EFlags;
 895         to->MxCsr  = from->MxCsr;
 896     }
 897     if (flags & CONTEXT_INTEGER)
 898     {
 899         to->Rax = from->Rax;
 900         to->Rcx = from->Rcx;
 901         to->Rdx = from->Rdx;
 902         to->Rbx = from->Rbx;
 903         to->Rsi = from->Rsi;
 904         to->Rdi = from->Rdi;
 905         to->R8  = from->R8;
 906         to->R9  = from->R9;
 907         to->R10 = from->R10;
 908         to->R11 = from->R11;
 909         to->R12 = from->R12;
 910         to->R13 = from->R13;
 911         to->R14 = from->R14;
 912         to->R15 = from->R15;
 913     }
 914     if (flags & CONTEXT_SEGMENTS)
 915     {
 916         to->SegDs = from->SegDs;
 917         to->SegEs = from->SegEs;
 918         to->SegFs = from->SegFs;
 919         to->SegGs = from->SegGs;
 920     }
 921     if (flags & CONTEXT_FLOATING_POINT)
 922     {
 923         to->u.FltSave = from->u.FltSave;
 924     }
 925     if (flags & CONTEXT_DEBUG_REGISTERS)
 926     {
 927         to->Dr0 = from->Dr0;
 928         to->Dr1 = from->Dr1;
 929         to->Dr2 = from->Dr2;
 930         to->Dr3 = from->Dr3;
 931         to->Dr6 = from->Dr6;
 932         to->Dr7 = from->Dr7;
 933     }
 934 #elif defined(__sparc__)
 935     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 936     if (flags & CONTEXT_CONTROL)
 937     {
 938         to->psr = from->psr;
 939         to->pc  = from->pc;
 940         to->npc = from->npc;
 941         to->y   = from->y;
 942         to->wim = from->wim;
 943         to->tbr = from->tbr;
 944     }
 945     if (flags & CONTEXT_INTEGER)
 946     {
 947         to->g0 = from->g0;
 948         to->g1 = from->g1;
 949         to->g2 = from->g2;
 950         to->g3 = from->g3;
 951         to->g4 = from->g4;
 952         to->g5 = from->g5;
 953         to->g6 = from->g6;
 954         to->g7 = from->g7;
 955         to->o0 = from->o0;
 956         to->o1 = from->o1;
 957         to->o2 = from->o2;
 958         to->o3 = from->o3;
 959         to->o4 = from->o4;
 960         to->o5 = from->o5;
 961         to->o6 = from->o6;
 962         to->o7 = from->o7;
 963         to->l0 = from->l0;
 964         to->l1 = from->l1;
 965         to->l2 = from->l2;
 966         to->l3 = from->l3;
 967         to->l4 = from->l4;
 968         to->l5 = from->l5;
 969         to->l6 = from->l6;
 970         to->l7 = from->l7;
 971         to->i0 = from->i0;
 972         to->i1 = from->i1;
 973         to->i2 = from->i2;
 974         to->i3 = from->i3;
 975         to->i4 = from->i4;
 976         to->i5 = from->i5;
 977         to->i6 = from->i6;
 978         to->i7 = from->i7;
 979     }
 980     if (flags & CONTEXT_FLOATING_POINT)
 981     {
 982         /* FIXME */
 983     }
 984 #elif defined(__powerpc__)
 985     /* Has no CPU id */
 986     if (flags & CONTEXT_CONTROL)
 987     {
 988         to->Msr = from->Msr;
 989         to->Ctr = from->Ctr;
 990         to->Iar = from->Iar;
 991     }
 992     if (flags & CONTEXT_INTEGER)
 993     {
 994         to->Gpr0  = from->Gpr0;
 995         to->Gpr1  = from->Gpr1;
 996         to->Gpr2  = from->Gpr2;
 997         to->Gpr3  = from->Gpr3;
 998         to->Gpr4  = from->Gpr4;
 999         to->Gpr5  = from->Gpr5;
1000         to->Gpr6  = from->Gpr6;
1001         to->Gpr7  = from->Gpr7;
1002         to->Gpr8  = from->Gpr8;
1003         to->Gpr9  = from->Gpr9;
1004         to->Gpr10 = from->Gpr10;
1005         to->Gpr11 = from->Gpr11;
1006         to->Gpr12 = from->Gpr12;
1007         to->Gpr13 = from->Gpr13;
1008         to->Gpr14 = from->Gpr14;
1009         to->Gpr15 = from->Gpr15;
1010         to->Gpr16 = from->Gpr16;
1011         to->Gpr17 = from->Gpr17;
1012         to->Gpr18 = from->Gpr18;
1013         to->Gpr19 = from->Gpr19;
1014         to->Gpr20 = from->Gpr20;
1015         to->Gpr21 = from->Gpr21;
1016         to->Gpr22 = from->Gpr22;
1017         to->Gpr23 = from->Gpr23;
1018         to->Gpr24 = from->Gpr24;
1019         to->Gpr25 = from->Gpr25;
1020         to->Gpr26 = from->Gpr26;
1021         to->Gpr27 = from->Gpr27;
1022         to->Gpr28 = from->Gpr28;
1023         to->Gpr29 = from->Gpr29;
1024         to->Gpr30 = from->Gpr30;
1025         to->Gpr31 = from->Gpr31;
1026         to->Xer   = from->Xer;
1027         to->Cr    = from->Cr;
1028     }
1029     if (flags & CONTEXT_FLOATING_POINT)
1030     {
1031         to->Fpr0  = from->Fpr0;
1032         to->Fpr1  = from->Fpr1;
1033         to->Fpr2  = from->Fpr2;
1034         to->Fpr3  = from->Fpr3;
1035         to->Fpr4  = from->Fpr4;
1036         to->Fpr5  = from->Fpr5;
1037         to->Fpr6  = from->Fpr6;
1038         to->Fpr7  = from->Fpr7;
1039         to->Fpr8  = from->Fpr8;
1040         to->Fpr9  = from->Fpr9;
1041         to->Fpr10 = from->Fpr10;
1042         to->Fpr11 = from->Fpr11;
1043         to->Fpr12 = from->Fpr12;
1044         to->Fpr13 = from->Fpr13;
1045         to->Fpr14 = from->Fpr14;
1046         to->Fpr15 = from->Fpr15;
1047         to->Fpr16 = from->Fpr16;
1048         to->Fpr17 = from->Fpr17;
1049         to->Fpr18 = from->Fpr18;
1050         to->Fpr19 = from->Fpr19;
1051         to->Fpr20 = from->Fpr20;
1052         to->Fpr21 = from->Fpr21;
1053         to->Fpr22 = from->Fpr22;
1054         to->Fpr23 = from->Fpr23;
1055         to->Fpr24 = from->Fpr24;
1056         to->Fpr25 = from->Fpr25;
1057         to->Fpr26 = from->Fpr26;
1058         to->Fpr27 = from->Fpr27;
1059         to->Fpr28 = from->Fpr28;
1060         to->Fpr29 = from->Fpr29;
1061         to->Fpr30 = from->Fpr30;
1062         to->Fpr31 = from->Fpr31;
1063         to->Fpscr = from->Fpscr;
1064     }
1065 #else
1066 #error You must implement context copying for your CPU
1067 #endif
1068 }
1069
1070
1071 /***********************************************************************
1072  *              NtGetContextThread  (NTDLL.@)
1073  *              ZwGetContextThread  (NTDLL.@)
1074  */
1075 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1076 {
1077     NTSTATUS ret;
1078     CONTEXT ctx;
1079     DWORD dummy, i;
1080     DWORD needed_flags = context->ContextFlags;
1081     BOOL self = (handle == GetCurrentThread());
1082
1083 #ifdef __i386__
1084     /* on i386 debug registers always require a server call */
1085     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1086 #endif
1087
1088     if (!self)
1089     {
1090         SERVER_START_REQ( get_thread_context )
1091         {
1092             req->handle  = wine_server_obj_handle( handle );
1093             req->flags   = context->ContextFlags;
1094             req->suspend = 0;
1095             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1096             ret = wine_server_call( req );
1097             self = reply->self;
1098         }
1099         SERVER_END_REQ;
1100
1101         if (ret == STATUS_PENDING)
1102         {
1103             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1104             {
1105                 for (i = 0; i < 100; i++)
1106                 {
1107                     SERVER_START_REQ( get_thread_context )
1108                     {
1109                         req->handle  = wine_server_obj_handle( handle );
1110                         req->flags   = context->ContextFlags;
1111                         req->suspend = 0;
1112                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1113                         ret = wine_server_call( req );
1114                     }
1115                     SERVER_END_REQ;
1116                     if (ret == STATUS_PENDING)
1117                     {
1118                         LARGE_INTEGER timeout;
1119                         timeout.QuadPart = -10000;
1120                         NtDelayExecution( FALSE, &timeout );
1121                     }
1122                     else break;
1123                 }
1124                 NtResumeThread( handle, &dummy );
1125             }
1126             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1127         }
1128         if (ret) return ret;
1129         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1130         needed_flags &= ~ctx.ContextFlags;
1131     }
1132
1133     if (self)
1134     {
1135         if (needed_flags)
1136         {
1137             get_cpu_context( &ctx );
1138             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1139         }
1140 #ifdef __i386__
1141         /* update the cached version of the debug registers */
1142         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1143         {
1144             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1145             regs->dr0 = context->Dr0;
1146             regs->dr1 = context->Dr1;
1147             regs->dr2 = context->Dr2;
1148             regs->dr3 = context->Dr3;
1149             regs->dr6 = context->Dr6;
1150             regs->dr7 = context->Dr7;
1151         }
1152 #endif
1153     }
1154     return STATUS_SUCCESS;
1155 }
1156
1157
1158 /******************************************************************************
1159  *              NtQueryInformationThread  (NTDLL.@)
1160  *              ZwQueryInformationThread  (NTDLL.@)
1161  */
1162 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1163                                           void *data, ULONG length, ULONG *ret_len )
1164 {
1165     NTSTATUS status;
1166
1167     switch(class)
1168     {
1169     case ThreadBasicInformation:
1170         {
1171             THREAD_BASIC_INFORMATION info;
1172             const unsigned int affinity_mask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1173
1174             SERVER_START_REQ( get_thread_info )
1175             {
1176                 req->handle = wine_server_obj_handle( handle );
1177                 req->tid_in = 0;
1178                 if (!(status = wine_server_call( req )))
1179                 {
1180                     info.ExitStatus             = reply->exit_code;
1181                     info.TebBaseAddress         = reply->teb;
1182                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
1183                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
1184                     info.AffinityMask           = reply->affinity & affinity_mask;
1185                     info.Priority               = reply->priority;
1186                     info.BasePriority           = reply->priority;  /* FIXME */
1187                 }
1188             }
1189             SERVER_END_REQ;
1190             if (status == STATUS_SUCCESS)
1191             {
1192                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1193                 if (ret_len) *ret_len = min( length, sizeof(info) );
1194             }
1195         }
1196         return status;
1197     case ThreadTimes:
1198         {
1199             KERNEL_USER_TIMES   kusrt;
1200             /* We need to do a server call to get the creation time or exit time */
1201             /* This works on any thread */
1202             SERVER_START_REQ( get_thread_info )
1203             {
1204                 req->handle = wine_server_obj_handle( handle );
1205                 req->tid_in = 0;
1206                 status = wine_server_call( req );
1207                 if (status == STATUS_SUCCESS)
1208                 {
1209                     kusrt.CreateTime.QuadPart = reply->creation_time;
1210                     kusrt.ExitTime.QuadPart = reply->exit_time;
1211                 }
1212             }
1213             SERVER_END_REQ;
1214             if (status == STATUS_SUCCESS)
1215             {
1216                 /* We call times(2) for kernel time or user time */
1217                 /* We can only (portably) do this for the current thread */
1218                 if (handle == GetCurrentThread())
1219                 {
1220                     struct tms time_buf;
1221                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1222
1223                     times(&time_buf);
1224                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1225                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1226                 }
1227                 else
1228                 {
1229                     static BOOL reported = FALSE;
1230
1231                     kusrt.KernelTime.QuadPart = 0;
1232                     kusrt.UserTime.QuadPart = 0;
1233                     if (reported)
1234                         TRACE("Cannot get kerneltime or usertime of other threads\n");
1235                     else
1236                     {
1237                         FIXME("Cannot get kerneltime or usertime of other threads\n");
1238                         reported = TRUE;
1239                     }
1240                 }
1241                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1242                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1243             }
1244         }
1245         return status;
1246     case ThreadDescriptorTableEntry:
1247         {
1248 #ifdef __i386__
1249             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1250             if (length < sizeof(*tdi))
1251                 status = STATUS_INFO_LENGTH_MISMATCH;
1252             else if (!(tdi->Selector & 4))  /* GDT selector */
1253             {
1254                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1255                 status = STATUS_SUCCESS;
1256                 if (!sel)  /* null selector */
1257                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1258                 else
1259                 {
1260                     tdi->Entry.BaseLow                   = 0;
1261                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1262                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1263                     tdi->Entry.LimitLow                  = 0xffff;
1264                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1265                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1266                     tdi->Entry.HighWord.Bits.Sys         = 0;
1267                     tdi->Entry.HighWord.Bits.Pres        = 1;
1268                     tdi->Entry.HighWord.Bits.Granularity = 1;
1269                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1270                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1271                     /* it has to be one of the system GDT selectors */
1272                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1273                     {
1274                         if (sel == (wine_get_cs() & ~3))
1275                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1276                         else status = STATUS_ACCESS_DENIED;
1277                     }
1278                 }
1279             }
1280             else
1281             {
1282                 SERVER_START_REQ( get_selector_entry )
1283                 {
1284                     req->handle = wine_server_obj_handle( handle );
1285                     req->entry = tdi->Selector >> 3;
1286                     status = wine_server_call( req );
1287                     if (!status)
1288                     {
1289                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1290                             status = STATUS_ACCESS_VIOLATION;
1291                         else
1292                         {
1293                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1294                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1295                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1296                         }
1297                     }
1298                 }
1299                 SERVER_END_REQ;
1300             }
1301             if (status == STATUS_SUCCESS && ret_len)
1302                 /* yes, that's a bit strange, but it's the way it is */
1303                 *ret_len = sizeof(LDT_ENTRY);
1304 #else
1305             status = STATUS_NOT_IMPLEMENTED;
1306 #endif
1307             return status;
1308         }
1309     case ThreadAmILastThread:
1310         {
1311             SERVER_START_REQ(get_thread_info)
1312             {
1313                 req->handle = wine_server_obj_handle( handle );
1314                 req->tid_in = 0;
1315                 status = wine_server_call( req );
1316                 if (status == STATUS_SUCCESS)
1317                 {
1318                     BOOLEAN last = reply->last;
1319                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1320                     if (ret_len) *ret_len = min( length, sizeof(last) );
1321                 }
1322             }
1323             SERVER_END_REQ;
1324             return status;
1325         }
1326     case ThreadPriority:
1327     case ThreadBasePriority:
1328     case ThreadAffinityMask:
1329     case ThreadImpersonationToken:
1330     case ThreadEnableAlignmentFaultFixup:
1331     case ThreadEventPair_Reusable:
1332     case ThreadQuerySetWin32StartAddress:
1333     case ThreadZeroTlsCell:
1334     case ThreadPerformanceCount:
1335     case ThreadIdealProcessor:
1336     case ThreadPriorityBoost:
1337     case ThreadSetTlsArrayAddress:
1338     case ThreadIsIoPending:
1339     default:
1340         FIXME( "info class %d not supported yet\n", class );
1341         return STATUS_NOT_IMPLEMENTED;
1342     }
1343 }
1344
1345
1346 /******************************************************************************
1347  *              NtSetInformationThread  (NTDLL.@)
1348  *              ZwSetInformationThread  (NTDLL.@)
1349  */
1350 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1351                                         LPCVOID data, ULONG length )
1352 {
1353     NTSTATUS status;
1354     switch(class)
1355     {
1356     case ThreadZeroTlsCell:
1357         if (handle == GetCurrentThread())
1358         {
1359             LIST_ENTRY *entry;
1360             DWORD index;
1361
1362             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1363             index = *(const DWORD *)data;
1364             if (index < TLS_MINIMUM_AVAILABLE)
1365             {
1366                 RtlAcquirePebLock();
1367                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1368                 {
1369                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1370                     teb->TlsSlots[index] = 0;
1371                 }
1372                 RtlReleasePebLock();
1373             }
1374             else
1375             {
1376                 index -= TLS_MINIMUM_AVAILABLE;
1377                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1378                     return STATUS_INVALID_PARAMETER;
1379                 RtlAcquirePebLock();
1380                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1381                 {
1382                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1383                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1384                 }
1385                 RtlReleasePebLock();
1386             }
1387             return STATUS_SUCCESS;
1388         }
1389         FIXME( "ZeroTlsCell not supported on other threads\n" );
1390         return STATUS_NOT_IMPLEMENTED;
1391
1392     case ThreadImpersonationToken:
1393         {
1394             const HANDLE *phToken = data;
1395             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1396             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1397             SERVER_START_REQ( set_thread_info )
1398             {
1399                 req->handle   = wine_server_obj_handle( handle );
1400                 req->token    = wine_server_obj_handle( *phToken );
1401                 req->mask     = SET_THREAD_INFO_TOKEN;
1402                 status = wine_server_call( req );
1403             }
1404             SERVER_END_REQ;
1405         }
1406         return status;
1407     case ThreadBasePriority:
1408         {
1409             const DWORD *pprio = data;
1410             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1411             SERVER_START_REQ( set_thread_info )
1412             {
1413                 req->handle   = wine_server_obj_handle( handle );
1414                 req->priority = *pprio;
1415                 req->mask     = SET_THREAD_INFO_PRIORITY;
1416                 status = wine_server_call( req );
1417             }
1418             SERVER_END_REQ;
1419         }
1420         return status;
1421     case ThreadAffinityMask:
1422         {
1423             const DWORD affinity_mask = (1 << NtCurrentTeb()->Peb->NumberOfProcessors) - 1;
1424             const DWORD *paff = data;
1425             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1426             if (*paff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
1427             SERVER_START_REQ( set_thread_info )
1428             {
1429                 req->handle   = wine_server_obj_handle( handle );
1430                 req->affinity = *paff;
1431                 req->mask     = SET_THREAD_INFO_AFFINITY;
1432                 status = wine_server_call( req );
1433             }
1434             SERVER_END_REQ;
1435         }
1436         return status;
1437     case ThreadBasicInformation:
1438     case ThreadTimes:
1439     case ThreadPriority:
1440     case ThreadDescriptorTableEntry:
1441     case ThreadEnableAlignmentFaultFixup:
1442     case ThreadEventPair_Reusable:
1443     case ThreadQuerySetWin32StartAddress:
1444     case ThreadPerformanceCount:
1445     case ThreadAmILastThread:
1446     case ThreadIdealProcessor:
1447     case ThreadPriorityBoost:
1448     case ThreadSetTlsArrayAddress:
1449     case ThreadIsIoPending:
1450     default:
1451         FIXME( "info class %d not supported yet\n", class );
1452         return STATUS_NOT_IMPLEMENTED;
1453     }
1454 }
1455
1456
1457 /**********************************************************************
1458  *           NtCurrentTeb   (NTDLL.@)
1459  */
1460 #if defined(__i386__) && defined(__GNUC__)
1461
1462 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1463
1464 #elif defined(__i386__) && defined(_MSC_VER)
1465
1466 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1467
1468 #elif defined(__x86_64__) && defined(__GNUC__)
1469
1470 /* not exported on x86_64 */
1471
1472 #else
1473
1474 /**********************************************************************/
1475
1476 TEB * WINAPI NtCurrentTeb(void)
1477 {
1478     return pthread_functions.get_current_teb();
1479 }
1480
1481 #endif  /* __i386__ */