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

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <sys/types.h>
  26 #ifdef HAVE_SYS_MMAN_H
  27 #include <sys/mman.h>
  28 #endif
  29 #ifdef HAVE_SYS_TIMES_H
  30 #include <sys/times.h>
  31 #endif
  32
  33 #define NONAMELESSUNION
  34 #include "ntstatus.h"
  35 #define WIN32_NO_STATUS
  36 #include "thread.h"
  37 #include "winternl.h"
  38 #include "wine/library.h"
  39 #include "wine/server.h"
  40 #include "wine/pthread.h"
  41 #include "wine/debug.h"
  42 #include "ntdll_misc.h"
  43 #include "ddk/wdm.h"
  44 #include "wine/exception.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  47 WINE_DECLARE_DEBUG_CHANNEL(relay);
  48
  49 struct _KUSER_SHARED_DATA *user_shared_data = NULL;
  50
  51 /* info passed to a starting thread */
  52 struct startup_info
  53 {
  54     struct wine_pthread_thread_info pthread_info;
  55     PRTL_THREAD_START_ROUTINE       entry_point;
  56     void                           *entry_arg;
  57 };
  58
  59 static PEB_LDR_DATA ldr;
  60 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  61 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  62 static RTL_BITMAP tls_bitmap;
  63 static RTL_BITMAP tls_expansion_bitmap;
  64 static LIST_ENTRY tls_links;
  65 static size_t sigstack_total_size;
  66 static ULONG sigstack_zero_bits;
  67
  68 struct wine_pthread_functions pthread_functions = { NULL };
  69
  70
  71 static RTL_CRITICAL_SECTION ldt_section;
  72 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  73 {
  74     0, 0, &ldt_section,
  75     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  76       0, 0, { (DWORD_PTR)(__FILE__ ": ldt_section") }
  77 };
  78 static RTL_CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  79 static sigset_t ldt_sigset;
  80
  81 /***********************************************************************
  82  *           locking for LDT routines
  83  */
  84 static void ldt_lock(void)
  85 {
  86     sigset_t sigset;
  87
  88     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
  89     RtlEnterCriticalSection( &ldt_section );
  90     if (ldt_section.RecursionCount == 1) ldt_sigset = sigset;
  91 }
  92
  93 static void ldt_unlock(void)
  94 {
  95     if (ldt_section.RecursionCount == 1)
  96     {
  97         sigset_t sigset = ldt_sigset;
  98         RtlLeaveCriticalSection( &ldt_section );
  99         pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 100     }
 101     else RtlLeaveCriticalSection( &ldt_section );
 102 }
 103
 104
 105 /***********************************************************************
 106  *           init_teb
 107  */
 108 static inline NTSTATUS init_teb( TEB *teb )
 109 {
 110     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 111
 112     teb->Tib.ExceptionList = (void *)~0UL;
 113     teb->Tib.StackBase     = (void *)~0UL;
 114     teb->Tib.Self          = &teb->Tib;
 115     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
 116     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
 117
 118     if (!(thread_data->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
 119     thread_data->request_fd = -1;
 120     thread_data->reply_fd   = -1;
 121     thread_data->wait_fd[0] = -1;
 122     thread_data->wait_fd[1] = -1;
 123
 124     return STATUS_SUCCESS;
 125 }
 126
 127
 128 /***********************************************************************
 129  *           fix_unicode_string
 130  *
 131  * Make sure the unicode string doesn't point beyond the end pointer
 132  */
 133 static inline void fix_unicode_string( UNICODE_STRING *str, const char *end_ptr )
 134 {
 135     if ((char *)str->Buffer >= end_ptr)
 136     {
 137         str->Length = str->MaximumLength = 0;
 138         str->Buffer = NULL;
 139         return;
 140     }
 141     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 142     {
 143         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 144     }
 145     if (str->Length >= str->MaximumLength)
 146     {
 147         if (str->MaximumLength >= sizeof(WCHAR))
 148             str->Length = str->MaximumLength - sizeof(WCHAR);
 149         else
 150             str->Length = str->MaximumLength = 0;
 151     }
 152 }
 153
 154
 155 /***********************************************************************
 156  *           init_user_process_params
 157  *
 158  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 159  */
 160 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 161 {
 162     void *ptr;
 163     SIZE_T env_size;
 164     NTSTATUS status;
 165     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 166
 167     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 168                                       MEM_COMMIT, PAGE_READWRITE );
 169     if (status != STATUS_SUCCESS) return status;
 170
 171     params->AllocationSize = info_size;
 172     NtCurrentTeb()->Peb->ProcessParameters = params;
 173
 174     SERVER_START_REQ( get_startup_info )
 175     {
 176         wine_server_set_reply( req, params, info_size );
 177         if (!(status = wine_server_call( req )))
 178         {
 179             info_size = wine_server_reply_size( reply );
 180             *exe_file = reply->exe_file;
 181             params->hStdInput  = reply->hstdin;
 182             params->hStdOutput = reply->hstdout;
 183             params->hStdError  = reply->hstderr;
 184         }
 185     }
 186     SERVER_END_REQ;
 187     if (status != STATUS_SUCCESS) return status;
 188
 189     if (params->Size > info_size) params->Size = info_size;
 190
 191     /* make sure the strings are valid */
 192     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 193     fix_unicode_string( &params->DllPath, (char *)info_size );
 194     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 195     fix_unicode_string( &params->CommandLine, (char *)info_size );
 196     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 197     fix_unicode_string( &params->Desktop, (char *)info_size );
 198     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 199     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 200
 201     /* environment needs to be a separate memory block */
 202     env_size = info_size - params->Size;
 203     if (!env_size) env_size = 1;
 204     ptr = NULL;
 205     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 206                                       MEM_COMMIT, PAGE_READWRITE );
 207     if (status != STATUS_SUCCESS) return status;
 208     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 209     params->Environment = ptr;
 210
 211     RtlNormalizeProcessParams( params );
 212     return status;
 213 }
 214
 215
 216 /***********************************************************************
 217  *           thread_init
 218  *
 219  * Setup the initial thread.
 220  *
 221  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 222  */
 223 HANDLE thread_init(void)
 224 {
 225     PEB *peb;
 226     TEB *teb;
 227     void *addr;
 228     SIZE_T size, info_size;
 229     HANDLE exe_file = 0;
 230     LARGE_INTEGER now;
 231     struct ntdll_thread_data *thread_data;
 232     struct wine_pthread_thread_info thread_info;
 233     static struct debug_info debug_info;  /* debug info for initial thread */
 234
 235     virtual_init();
 236
 237     /* reserve space for shared user data */
 238
 239     addr = (void *)0x7ffe0000;
 240     size = 0x10000;
 241     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 0, &size, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE );
 242     user_shared_data = addr;
 243
 244     /* allocate and initialize the PEB */
 245
 246     addr = NULL;
 247     size = sizeof(*peb);
 248     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, 1, &size,
 249                              MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 250     peb = addr;
 251
 252     peb->NumberOfProcessors = 1;
 253     peb->ProcessParameters  = &params;
 254     peb->TlsBitmap          = &tls_bitmap;
 255     peb->TlsExpansionBitmap = &tls_expansion_bitmap;
 256     peb->LdrData            = &ldr;
 257     params.CurrentDirectory.DosPath.Buffer = current_dir;
 258     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 259     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 260     RtlInitializeBitMap( &tls_bitmap, peb->TlsBitmapBits, sizeof(peb->TlsBitmapBits) * 8 );
 261     RtlInitializeBitMap( &tls_expansion_bitmap, peb->TlsExpansionBitmapBits,
 262                          sizeof(peb->TlsExpansionBitmapBits) * 8 );
 263     InitializeListHead( &ldr.InLoadOrderModuleList );
 264     InitializeListHead( &ldr.InMemoryOrderModuleList );
 265     InitializeListHead( &ldr.InInitializationOrderModuleList );
 266     InitializeListHead( &tls_links );
 267
 268     /* allocate and initialize the initial TEB */
 269
 270     sigstack_total_size = get_signal_stack_total_size();
 271     while (1 << sigstack_zero_bits < sigstack_total_size) sigstack_zero_bits++;
 272     assert( 1 << sigstack_zero_bits == sigstack_total_size );  /* must be a power of 2 */
 273     assert( sigstack_total_size >= sizeof(TEB) + sizeof(struct startup_info) );
 274     thread_info.teb_size = sigstack_total_size;
 275
 276     addr = NULL;
 277     size = sigstack_total_size;
 278     NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 279                              &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
 280     teb = addr;
 281     teb->Peb = peb;
 282     thread_info.teb_size = size;
 283     init_teb( teb );
 284     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 285     thread_data->debug_info = &debug_info;
 286     InsertHeadList( &tls_links, &teb->TlsLinks );
 287
 288     thread_info.stack_base = NULL;
 289     thread_info.stack_size = 0;
 290     thread_info.teb_base   = teb;
 291     thread_info.teb_sel    = thread_data->fs;
 292     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 293     pthread_functions.init_current_teb( &thread_info );
 294     pthread_functions.init_thread( &thread_info );
 295     virtual_init_threading();
 296
 297     debug_info.str_pos = debug_info.strings;
 298     debug_info.out_pos = debug_info.output;
 299     debug_init();
 300
 301     /* setup the server connection */
 302     server_init_process();
 303     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 304
 305     /* create the process heap */
 306     if (!(peb->ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 307     {
 308         MESSAGE( "wine: failed to create the process heap\n" );
 309         exit(1);
 310     }
 311
 312     /* allocate user parameters */
 313     if (info_size)
 314     {
 315         init_user_process_params( info_size, &exe_file );
 316     }
 317     else
 318     {
 319         /* This is wine specific: we have no parent (we're started from unix)
 320          * so, create a simple console with bare handles to unix stdio
 321          */
 322         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 323         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 324         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 325     }
 326
 327     /* initialize LDT locking */
 328     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 329
 330     /* initialize time values in user_shared_data */
 331     NtQuerySystemTime( &now );
 332     user_shared_data->SystemTime.LowPart = now.u.LowPart;
 333     user_shared_data->SystemTime.High1Time = user_shared_data->SystemTime.High2Time = now.u.HighPart;
 334     user_shared_data->u.TickCountQuad = (now.QuadPart - server_start_time) / 10000;
 335     user_shared_data->u.TickCount.High2Time = user_shared_data->u.TickCount.High1Time;
 336     user_shared_data->TickCountLowDeprecated = user_shared_data->u.TickCount.LowPart;
 337     user_shared_data->TickCountMultiplier = 1 << 24;
 338
 339     return exe_file;
 340 }
 341
 342 typedef LONG (WINAPI *PUNHANDLED_EXCEPTION_FILTER)(PEXCEPTION_POINTERS);
 343 static PUNHANDLED_EXCEPTION_FILTER get_unhandled_exception_filter(void)
 344 {
 345     static PUNHANDLED_EXCEPTION_FILTER unhandled_exception_filter;
 346     static const WCHAR kernel32W[] = {'k','e','r','n','e','l','3','2','.','d','l','l',0};
 347     UNICODE_STRING module_name;
 348     ANSI_STRING func_name;
 349     HMODULE kernel32_handle;
 350
 351     if (unhandled_exception_filter) return unhandled_exception_filter;
 352
 353     RtlInitUnicodeString(&module_name, kernel32W);
 354     RtlInitAnsiString( &func_name, "UnhandledExceptionFilter" );
 355
 356     if (LdrGetDllHandle( 0, 0, &module_name, &kernel32_handle ) == STATUS_SUCCESS)
 357         LdrGetProcedureAddress( kernel32_handle, &func_name, 0,
 358                                 (void **)&unhandled_exception_filter );
 359
 360     return unhandled_exception_filter;
 361 }
 362
 363 #ifdef __i386__
 364 /* wrapper for apps that don't declare the thread function correctly */
 365 extern DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg );
 366 __ASM_GLOBAL_FUNC(call_thread_entry_point,
 367                   "pushl %ebp\n\t"
 368                   "movl %esp,%ebp\n\t"
 369                   "subl $4,%esp\n\t"
 370                   "pushl 12(%ebp)\n\t"
 371                   "movl 8(%ebp),%eax\n\t"
 372                   "call *%eax\n\t"
 373                   "leave\n\t"
 374                   "ret" );
 375 #else
 376 static inline DWORD call_thread_entry_point( PRTL_THREAD_START_ROUTINE entry, void *arg )
 377 {
 378     LPTHREAD_START_ROUTINE func = (LPTHREAD_START_ROUTINE)entry;
 379     return func( arg );
 380 }
 381 #endif
 382
 383 /***********************************************************************
 384  *           call_thread_func
 385  *
 386  * Hack to make things compatible with the thread procedures used by kernel32.CreateThread.
 387  */
 388 static void DECLSPEC_NORETURN call_thread_func( PRTL_THREAD_START_ROUTINE rtl_func, void *arg )
 389 {
 390     DWORD exit_code;
 391     BOOL last;
 392
 393     MODULE_DllThreadAttach( NULL );
 394
 395     if (TRACE_ON(relay))
 396         DPRINTF( "%04x:Starting thread proc %p (arg=%p)\n", GetCurrentThreadId(), rtl_func, arg );
 397
 398     exit_code = call_thread_entry_point( rtl_func, arg );
 399
 400     /* send the exit code to the server */
 401     SERVER_START_REQ( terminate_thread )
 402     {
 403         req->handle    = GetCurrentThread();
 404         req->exit_code = exit_code;
 405         wine_server_call( req );
 406         last = reply->last;
 407     }
 408     SERVER_END_REQ;
 409
 410     if (last)
 411     {
 412         LdrShutdownProcess();
 413         exit( exit_code );
 414     }
 415     else
 416     {
 417         LdrShutdownThread();
 418         server_exit_thread( exit_code );
 419     }
 420 }
 421
 422
 423 /***********************************************************************
 424  *           start_thread
 425  *
 426  * Startup routine for a newly created thread.
 427  */
 428 static void start_thread( struct wine_pthread_thread_info *info )
 429 {
 430     TEB *teb = info->teb_base;
 431     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 432     struct startup_info *startup_info = (struct startup_info *)info;
 433     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 434     void *arg = startup_info->entry_arg;
 435     struct debug_info debug_info;
 436     SIZE_T size, page_size = getpagesize();
 437
 438     debug_info.str_pos = debug_info.strings;
 439     debug_info.out_pos = debug_info.output;
 440     thread_data->debug_info = &debug_info;
 441
 442     pthread_functions.init_current_teb( info );
 443     SIGNAL_Init();
 444     server_init_thread( info->pid, info->tid, func );
 445     pthread_functions.init_thread( info );
 446
 447     /* allocate a memory view for the stack */
 448     size = info->stack_size;
 449     teb->DeallocationStack = info->stack_base;
 450     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 451                              &size, MEM_SYSTEM, PAGE_READWRITE );
 452     /* limit is lower than base since the stack grows down */
 453     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 454     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 455
 456     /* setup the guard page */
 457     size = page_size;
 458     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 459
 460     pthread_functions.sigprocmask( SIG_UNBLOCK, &server_block_set, NULL );
 461
 462     RtlAcquirePebLock();
 463     InsertHeadList( &tls_links, &teb->TlsLinks );
 464     RtlReleasePebLock();
 465
 466     /* NOTE: Windows does not have an exception handler around the call to
 467      * the thread attach. We do for ease of debugging */
 468     if (get_unhandled_exception_filter())
 469     {
 470         __TRY
 471         {
 472             call_thread_func( func, arg );
 473         }
 474         __EXCEPT(get_unhandled_exception_filter())
 475         {
 476             NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
 477         }
 478         __ENDTRY
 479     }
 480     else
 481         call_thread_func( func, arg );
 482 }
 483
 484
 485 /***********************************************************************
 486  *              RtlCreateUserThread   (NTDLL.@)
 487  */
 488 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 489                                      BOOLEAN suspended, PVOID stack_addr,
 490                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 491                                      PRTL_THREAD_START_ROUTINE start, void *param,
 492                                      HANDLE *handle_ptr, CLIENT_ID *id )
 493 {
 494     sigset_t sigset;
 495     struct ntdll_thread_data *thread_data = NULL;
 496     struct ntdll_thread_regs *thread_regs;
 497     struct startup_info *info = NULL;
 498     void *addr = NULL;
 499     HANDLE handle = 0;
 500     TEB *teb;
 501     DWORD tid = 0;
 502     int request_pipe[2];
 503     NTSTATUS status;
 504     SIZE_T size, page_size = getpagesize();
 505
 506     if (process != NtCurrentProcess())
 507     {
 508         apc_call_t call;
 509         apc_result_t result;
 510
 511         memset( &call, 0, sizeof(call) );
 512
 513         call.create_thread.type    = APC_CREATE_THREAD;
 514         call.create_thread.func    = start;
 515         call.create_thread.arg     = param;
 516         call.create_thread.reserve = stack_reserve;
 517         call.create_thread.commit  = stack_commit;
 518         call.create_thread.suspend = suspended;
 519         status = NTDLL_queue_process_apc( process, &call, &result );
 520         if (status != STATUS_SUCCESS) return status;
 521
 522         if (result.create_thread.status == STATUS_SUCCESS)
 523         {
 524             if (id) id->UniqueThread = ULongToHandle(result.create_thread.tid);
 525             if (handle_ptr) *handle_ptr = result.create_thread.handle;
 526             else NtClose( result.create_thread.handle );
 527         }
 528         return result.create_thread.status;
 529     }
 530
 531     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 532     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 533     wine_server_send_fd( request_pipe[0] );
 534
 535     SERVER_START_REQ( new_thread )
 536     {
 537         req->access     = THREAD_ALL_ACCESS;
 538         req->attributes = 0;  /* FIXME */
 539         req->suspend    = suspended;
 540         req->request_fd = request_pipe[0];
 541         if (!(status = wine_server_call( req )))
 542         {
 543             handle = reply->handle;
 544             tid = reply->tid;
 545         }
 546         close( request_pipe[0] );
 547     }
 548     SERVER_END_REQ;
 549
 550     if (status)
 551     {
 552         close( request_pipe[1] );
 553         return status;
 554     }
 555
 556     pthread_functions.sigprocmask( SIG_BLOCK, &server_block_set, &sigset );
 557
 558     addr = NULL;
 559     size = sigstack_total_size;
 560     if ((status = NtAllocateVirtualMemory( NtCurrentProcess(), &addr, sigstack_zero_bits,
 561                                            &size, MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE )))
 562         goto error;
 563     teb = addr;
 564     teb->Peb = NtCurrentTeb()->Peb;
 565     info = (struct startup_info *)(teb + 1);
 566     info->pthread_info.teb_size = size;
 567     if ((status = init_teb( teb ))) goto error;
 568
 569     teb->ClientId.UniqueProcess = ULongToHandle(GetCurrentProcessId());
 570     teb->ClientId.UniqueThread  = ULongToHandle(tid);
 571
 572     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 573     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 574     thread_data->request_fd  = request_pipe[1];
 575
 576     info->pthread_info.teb_base = teb;
 577     info->pthread_info.teb_sel  = thread_data->fs;
 578
 579     /* inherit debug registers from parent thread */
 580     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 581     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 582     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 583     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 584     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 585     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 586
 587     if (!stack_reserve || !stack_commit)
 588     {
 589         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 590         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 591         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 592     }
 593     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 594     stack_reserve += page_size;  /* for the guard page */
 595     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 596     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 597
 598     info->pthread_info.stack_base = NULL;
 599     info->pthread_info.stack_size = stack_reserve;
 600     info->pthread_info.entry      = start_thread;
 601     info->entry_point             = start;
 602     info->entry_arg               = param;
 603
 604     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 605     {
 606         status = STATUS_NO_MEMORY;
 607         goto error;
 608     }
 609     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 610
 611     if (id) id->UniqueThread = ULongToHandle(tid);
 612     if (handle_ptr) *handle_ptr = handle;
 613     else NtClose( handle );
 614
 615     return STATUS_SUCCESS;
 616
 617 error:
 618     if (thread_data) wine_ldt_free_fs( thread_data->fs );
 619     if (addr)
 620     {
 621         SIZE_T size = 0;
 622         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 623     }
 624     if (handle) NtClose( handle );
 625     pthread_functions.sigprocmask( SIG_SETMASK, &sigset, NULL );
 626     close( request_pipe[1] );
 627     return status;
 628 }
 629
 630
 631 /***********************************************************************
 632  *           RtlExitUserThread  (NTDLL.@)
 633  */
 634 void WINAPI RtlExitUserThread( ULONG status )
 635 {
 636     LdrShutdownThread();
 637     server_exit_thread( status );
 638 }
 639
 640
 641 /***********************************************************************
 642  *              NtOpenThread   (NTDLL.@)
 643  *              ZwOpenThread   (NTDLL.@)
 644  */
 645 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 646                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 647 {
 648     NTSTATUS ret;
 649
 650     SERVER_START_REQ( open_thread )
 651     {
 652         req->tid        = HandleToULong(id->UniqueThread);
 653         req->access     = access;
 654         req->attributes = attr ? attr->Attributes : 0;
 655         ret = wine_server_call( req );
 656         *handle = reply->handle;
 657     }
 658     SERVER_END_REQ;
 659     return ret;
 660 }
 661
 662
 663 /******************************************************************************
 664  *              NtSuspendThread   (NTDLL.@)
 665  *              ZwSuspendThread   (NTDLL.@)
 666  */
 667 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 668 {
 669     NTSTATUS ret;
 670
 671     SERVER_START_REQ( suspend_thread )
 672     {
 673         req->handle = handle;
 674         if (!(ret = wine_server_call( req ))) *count = reply->count;
 675     }
 676     SERVER_END_REQ;
 677     return ret;
 678 }
 679
 680
 681 /******************************************************************************
 682  *              NtResumeThread   (NTDLL.@)
 683  *              ZwResumeThread   (NTDLL.@)
 684  */
 685 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 686 {
 687     NTSTATUS ret;
 688
 689     SERVER_START_REQ( resume_thread )
 690     {
 691         req->handle = handle;
 692         if (!(ret = wine_server_call( req ))) *count = reply->count;
 693     }
 694     SERVER_END_REQ;
 695     return ret;
 696 }
 697
 698
 699 /******************************************************************************
 700  *              NtAlertResumeThread   (NTDLL.@)
 701  *              ZwAlertResumeThread   (NTDLL.@)
 702  */
 703 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 704 {
 705     FIXME( "stub: should alert thread %p\n", handle );
 706     return NtResumeThread( handle, count );
 707 }
 708
 709
 710 /******************************************************************************
 711  *              NtAlertThread   (NTDLL.@)
 712  *              ZwAlertThread   (NTDLL.@)
 713  */
 714 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 715 {
 716     FIXME( "stub: %p\n", handle );
 717     return STATUS_NOT_IMPLEMENTED;
 718 }
 719
 720
 721 /******************************************************************************
 722  *              NtTerminateThread  (NTDLL.@)
 723  *              ZwTerminateThread  (NTDLL.@)
 724  */
 725 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 726 {
 727     NTSTATUS ret;
 728     BOOL self, last;
 729
 730     SERVER_START_REQ( terminate_thread )
 731     {
 732         req->handle    = handle;
 733         req->exit_code = exit_code;
 734         ret = wine_server_call( req );
 735         self = !ret && reply->self;
 736         last = reply->last;
 737     }
 738     SERVER_END_REQ;
 739
 740     if (self)
 741     {
 742         if (last) exit( exit_code );
 743         else server_abort_thread( exit_code );
 744     }
 745     return ret;
 746 }
 747
 748
 749 /******************************************************************************
 750  *              NtQueueApcThread  (NTDLL.@)
 751  */
 752 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 753                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 754 {
 755     NTSTATUS ret;
 756     SERVER_START_REQ( queue_apc )
 757     {
 758         req->thread = handle;
 759         if (func)
 760         {
 761             req->call.type         = APC_USER;
 762             req->call.user.func    = func;
 763             req->call.user.args[0] = arg1;
 764             req->call.user.args[1] = arg2;
 765             req->call.user.args[2] = arg3;
 766         }
 767         else req->call.type = APC_NONE;  /* wake up only */
 768         ret = wine_server_call( req );
 769     }
 770     SERVER_END_REQ;
 771     return ret;
 772 }
 773
 774
 775 /***********************************************************************
 776  *              NtSetContextThread  (NTDLL.@)
 777  *              ZwSetContextThread  (NTDLL.@)
 778  */
 779 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 780 {
 781     NTSTATUS ret;
 782     DWORD dummy, i;
 783     BOOL self = FALSE;
 784
 785 #ifdef __i386__
 786     /* on i386 debug registers always require a server call */
 787     self = (handle == GetCurrentThread());
 788     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 789     {
 790         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 791         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 792                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 793                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 794     }
 795 #endif
 796
 797     if (!self)
 798     {
 799         SERVER_START_REQ( set_thread_context )
 800         {
 801             req->handle  = handle;
 802             req->flags   = context->ContextFlags;
 803             req->suspend = 0;
 804             wine_server_add_data( req, context, sizeof(*context) );
 805             ret = wine_server_call( req );
 806             self = reply->self;
 807         }
 808         SERVER_END_REQ;
 809
 810         if (ret == STATUS_PENDING)
 811         {
 812             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 813             {
 814                 for (i = 0; i < 100; i++)
 815                 {
 816                     SERVER_START_REQ( set_thread_context )
 817                     {
 818                         req->handle  = handle;
 819                         req->flags   = context->ContextFlags;
 820                         req->suspend = 0;
 821                         wine_server_add_data( req, context, sizeof(*context) );
 822                         ret = wine_server_call( req );
 823                     }
 824                     SERVER_END_REQ;
 825                     if (ret == STATUS_PENDING)
 826                     {
 827                         LARGE_INTEGER timeout;
 828                         timeout.QuadPart = -10000;
 829                         NtDelayExecution( FALSE, &timeout );
 830                     }
 831                     else break;
 832                 }
 833                 NtResumeThread( handle, &dummy );
 834             }
 835             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 836         }
 837
 838         if (ret) return ret;
 839     }
 840
 841     if (self) set_cpu_context( context );
 842     return STATUS_SUCCESS;
 843 }
 844
 845
 846 /* copy a context structure according to the flags */
 847 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 848 {
 849 #ifdef __i386__
 850     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 851     if (flags & CONTEXT_INTEGER)
 852     {
 853         to->Eax = from->Eax;
 854         to->Ebx = from->Ebx;
 855         to->Ecx = from->Ecx;
 856         to->Edx = from->Edx;
 857         to->Esi = from->Esi;
 858         to->Edi = from->Edi;
 859     }
 860     if (flags & CONTEXT_CONTROL)
 861     {
 862         to->Ebp    = from->Ebp;
 863         to->Esp    = from->Esp;
 864         to->Eip    = from->Eip;
 865         to->SegCs  = from->SegCs;
 866         to->SegSs  = from->SegSs;
 867         to->EFlags = from->EFlags;
 868     }
 869     if (flags & CONTEXT_SEGMENTS)
 870     {
 871         to->SegDs = from->SegDs;
 872         to->SegEs = from->SegEs;
 873         to->SegFs = from->SegFs;
 874         to->SegGs = from->SegGs;
 875     }
 876     if (flags & CONTEXT_DEBUG_REGISTERS)
 877     {
 878         to->Dr0 = from->Dr0;
 879         to->Dr1 = from->Dr1;
 880         to->Dr2 = from->Dr2;
 881         to->Dr3 = from->Dr3;
 882         to->Dr6 = from->Dr6;
 883         to->Dr7 = from->Dr7;
 884     }
 885     if (flags & CONTEXT_FLOATING_POINT)
 886     {
 887         to->FloatSave = from->FloatSave;
 888     }
 889 #elif defined(__x86_64__)
 890     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 891     if (flags & CONTEXT_CONTROL)
 892     {
 893         to->Rbp    = from->Rbp;
 894         to->Rip    = from->Rip;
 895         to->Rsp    = from->Rsp;
 896         to->SegCs  = from->SegCs;
 897         to->SegSs  = from->SegSs;
 898         to->EFlags = from->EFlags;
 899         to->MxCsr  = from->MxCsr;
 900     }
 901     if (flags & CONTEXT_INTEGER)
 902     {
 903         to->Rax = from->Rax;
 904         to->Rcx = from->Rcx;
 905         to->Rdx = from->Rdx;
 906         to->Rbx = from->Rbx;
 907         to->Rsi = from->Rsi;
 908         to->Rdi = from->Rdi;
 909         to->R8  = from->R8;
 910         to->R9  = from->R9;
 911         to->R10 = from->R10;
 912         to->R11 = from->R11;
 913         to->R12 = from->R12;
 914         to->R13 = from->R13;
 915         to->R14 = from->R14;
 916         to->R15 = from->R15;
 917     }
 918     if (flags & CONTEXT_SEGMENTS)
 919     {
 920         to->SegDs = from->SegDs;
 921         to->SegEs = from->SegEs;
 922         to->SegFs = from->SegFs;
 923         to->SegGs = from->SegGs;
 924     }
 925     if (flags & CONTEXT_FLOATING_POINT)
 926     {
 927         to->u.FltSave = from->u.FltSave;
 928     }
 929     if (flags & CONTEXT_DEBUG_REGISTERS)
 930     {
 931         to->Dr0 = from->Dr0;
 932         to->Dr1 = from->Dr1;
 933         to->Dr2 = from->Dr2;
 934         to->Dr3 = from->Dr3;
 935         to->Dr6 = from->Dr6;
 936         to->Dr7 = from->Dr7;
 937     }
 938 #elif defined(__sparc__)
 939     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 940     if (flags & CONTEXT_CONTROL)
 941     {
 942         to->psr = from->psr;
 943         to->pc  = from->pc;
 944         to->npc = from->npc;
 945         to->y   = from->y;
 946         to->wim = from->wim;
 947         to->tbr = from->tbr;
 948     }
 949     if (flags & CONTEXT_INTEGER)
 950     {
 951         to->g0 = from->g0;
 952         to->g1 = from->g1;
 953         to->g2 = from->g2;
 954         to->g3 = from->g3;
 955         to->g4 = from->g4;
 956         to->g5 = from->g5;
 957         to->g6 = from->g6;
 958         to->g7 = from->g7;
 959         to->o0 = from->o0;
 960         to->o1 = from->o1;
 961         to->o2 = from->o2;
 962         to->o3 = from->o3;
 963         to->o4 = from->o4;
 964         to->o5 = from->o5;
 965         to->o6 = from->o6;
 966         to->o7 = from->o7;
 967         to->l0 = from->l0;
 968         to->l1 = from->l1;
 969         to->l2 = from->l2;
 970         to->l3 = from->l3;
 971         to->l4 = from->l4;
 972         to->l5 = from->l5;
 973         to->l6 = from->l6;
 974         to->l7 = from->l7;
 975         to->i0 = from->i0;
 976         to->i1 = from->i1;
 977         to->i2 = from->i2;
 978         to->i3 = from->i3;
 979         to->i4 = from->i4;
 980         to->i5 = from->i5;
 981         to->i6 = from->i6;
 982         to->i7 = from->i7;
 983     }
 984     if (flags & CONTEXT_FLOATING_POINT)
 985     {
 986         /* FIXME */
 987     }
 988 #elif defined(__powerpc__)
 989     /* Has no CPU id */
 990     if (flags & CONTEXT_CONTROL)
 991     {
 992         to->Msr = from->Msr;
 993         to->Ctr = from->Ctr;
 994         to->Iar = from->Iar;
 995     }
 996     if (flags & CONTEXT_INTEGER)
 997     {
 998         to->Gpr0  = from->Gpr0;
 999         to->Gpr1  = from->Gpr1;
1000         to->Gpr2  = from->Gpr2;
1001         to->Gpr3  = from->Gpr3;
1002         to->Gpr4  = from->Gpr4;
1003         to->Gpr5  = from->Gpr5;
1004         to->Gpr6  = from->Gpr6;
1005         to->Gpr7  = from->Gpr7;
1006         to->Gpr8  = from->Gpr8;
1007         to->Gpr9  = from->Gpr9;
1008         to->Gpr10 = from->Gpr10;
1009         to->Gpr11 = from->Gpr11;
1010         to->Gpr12 = from->Gpr12;
1011         to->Gpr13 = from->Gpr13;
1012         to->Gpr14 = from->Gpr14;
1013         to->Gpr15 = from->Gpr15;
1014         to->Gpr16 = from->Gpr16;
1015         to->Gpr17 = from->Gpr17;
1016         to->Gpr18 = from->Gpr18;
1017         to->Gpr19 = from->Gpr19;
1018         to->Gpr20 = from->Gpr20;
1019         to->Gpr21 = from->Gpr21;
1020         to->Gpr22 = from->Gpr22;
1021         to->Gpr23 = from->Gpr23;
1022         to->Gpr24 = from->Gpr24;
1023         to->Gpr25 = from->Gpr25;
1024         to->Gpr26 = from->Gpr26;
1025         to->Gpr27 = from->Gpr27;
1026         to->Gpr28 = from->Gpr28;
1027         to->Gpr29 = from->Gpr29;
1028         to->Gpr30 = from->Gpr30;
1029         to->Gpr31 = from->Gpr31;
1030         to->Xer   = from->Xer;
1031         to->Cr    = from->Cr;
1032     }
1033     if (flags & CONTEXT_FLOATING_POINT)
1034     {
1035         to->Fpr0  = from->Fpr0;
1036         to->Fpr1  = from->Fpr1;
1037         to->Fpr2  = from->Fpr2;
1038         to->Fpr3  = from->Fpr3;
1039         to->Fpr4  = from->Fpr4;
1040         to->Fpr5  = from->Fpr5;
1041         to->Fpr6  = from->Fpr6;
1042         to->Fpr7  = from->Fpr7;
1043         to->Fpr8  = from->Fpr8;
1044         to->Fpr9  = from->Fpr9;
1045         to->Fpr10 = from->Fpr10;
1046         to->Fpr11 = from->Fpr11;
1047         to->Fpr12 = from->Fpr12;
1048         to->Fpr13 = from->Fpr13;
1049         to->Fpr14 = from->Fpr14;
1050         to->Fpr15 = from->Fpr15;
1051         to->Fpr16 = from->Fpr16;
1052         to->Fpr17 = from->Fpr17;
1053         to->Fpr18 = from->Fpr18;
1054         to->Fpr19 = from->Fpr19;
1055         to->Fpr20 = from->Fpr20;
1056         to->Fpr21 = from->Fpr21;
1057         to->Fpr22 = from->Fpr22;
1058         to->Fpr23 = from->Fpr23;
1059         to->Fpr24 = from->Fpr24;
1060         to->Fpr25 = from->Fpr25;
1061         to->Fpr26 = from->Fpr26;
1062         to->Fpr27 = from->Fpr27;
1063         to->Fpr28 = from->Fpr28;
1064         to->Fpr29 = from->Fpr29;
1065         to->Fpr30 = from->Fpr30;
1066         to->Fpr31 = from->Fpr31;
1067         to->Fpscr = from->Fpscr;
1068     }
1069 #else
1070 #error You must implement context copying for your CPU
1071 #endif
1072 }
1073
1074
1075 /***********************************************************************
1076  *              NtGetContextThread  (NTDLL.@)
1077  *              ZwGetContextThread  (NTDLL.@)
1078  */
1079 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
1080 {
1081     NTSTATUS ret;
1082     CONTEXT ctx;
1083     DWORD dummy, i;
1084     DWORD needed_flags = context->ContextFlags;
1085     BOOL self = (handle == GetCurrentThread());
1086
1087 #ifdef __i386__
1088     /* on i386 debug registers always require a server call */
1089     if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)) self = FALSE;
1090 #endif
1091
1092     if (!self)
1093     {
1094         SERVER_START_REQ( get_thread_context )
1095         {
1096             req->handle  = handle;
1097             req->flags   = context->ContextFlags;
1098             req->suspend = 0;
1099             wine_server_set_reply( req, &ctx, sizeof(ctx) );
1100             ret = wine_server_call( req );
1101             self = reply->self;
1102         }
1103         SERVER_END_REQ;
1104
1105         if (ret == STATUS_PENDING)
1106         {
1107             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
1108             {
1109                 for (i = 0; i < 100; i++)
1110                 {
1111                     SERVER_START_REQ( get_thread_context )
1112                     {
1113                         req->handle  = handle;
1114                         req->flags   = context->ContextFlags;
1115                         req->suspend = 0;
1116                         wine_server_set_reply( req, &ctx, sizeof(ctx) );
1117                         ret = wine_server_call( req );
1118                     }
1119                     SERVER_END_REQ;
1120                     if (ret == STATUS_PENDING)
1121                     {
1122                         LARGE_INTEGER timeout;
1123                         timeout.QuadPart = -10000;
1124                         NtDelayExecution( FALSE, &timeout );
1125                     }
1126                     else break;
1127                 }
1128                 NtResumeThread( handle, &dummy );
1129             }
1130             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
1131         }
1132         if (ret) return ret;
1133         copy_context( context, &ctx, context->ContextFlags & ctx.ContextFlags );
1134         needed_flags &= ~ctx.ContextFlags;
1135     }
1136
1137     if (self)
1138     {
1139         if (needed_flags)
1140         {
1141             get_cpu_context( &ctx );
1142             copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
1143         }
1144 #ifdef __i386__
1145         /* update the cached version of the debug registers */
1146         if (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386))
1147         {
1148             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
1149             regs->dr0 = context->Dr0;
1150             regs->dr1 = context->Dr1;
1151             regs->dr2 = context->Dr2;
1152             regs->dr3 = context->Dr3;
1153             regs->dr6 = context->Dr6;
1154             regs->dr7 = context->Dr7;
1155         }
1156 #endif
1157     }
1158     return STATUS_SUCCESS;
1159 }
1160
1161
1162 /******************************************************************************
1163  *              NtQueryInformationThread  (NTDLL.@)
1164  *              ZwQueryInformationThread  (NTDLL.@)
1165  */
1166 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
1167                                           void *data, ULONG length, ULONG *ret_len )
1168 {
1169     NTSTATUS status;
1170
1171     switch(class)
1172     {
1173     case ThreadBasicInformation:
1174         {
1175             THREAD_BASIC_INFORMATION info;
1176
1177             SERVER_START_REQ( get_thread_info )
1178             {
1179                 req->handle = handle;
1180                 req->tid_in = 0;
1181                 if (!(status = wine_server_call( req )))
1182                 {
1183                     info.ExitStatus             = reply->exit_code;
1184                     info.TebBaseAddress         = reply->teb;
1185                     info.ClientId.UniqueProcess = ULongToHandle(reply->pid);
1186                     info.ClientId.UniqueThread  = ULongToHandle(reply->tid);
1187                     info.AffinityMask           = reply->affinity;
1188                     info.Priority               = reply->priority;
1189                     info.BasePriority           = reply->priority;  /* FIXME */
1190                 }
1191             }
1192             SERVER_END_REQ;
1193             if (status == STATUS_SUCCESS)
1194             {
1195                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
1196                 if (ret_len) *ret_len = min( length, sizeof(info) );
1197             }
1198         }
1199         return status;
1200     case ThreadTimes:
1201         {
1202             KERNEL_USER_TIMES   kusrt;
1203             /* We need to do a server call to get the creation time or exit time */
1204             /* This works on any thread */
1205             SERVER_START_REQ( get_thread_info )
1206             {
1207                 req->handle = handle;
1208                 req->tid_in = 0;
1209                 status = wine_server_call( req );
1210                 if (status == STATUS_SUCCESS)
1211                 {
1212                     kusrt.CreateTime.QuadPart = reply->creation_time;
1213                     kusrt.ExitTime.QuadPart = reply->exit_time;
1214                 }
1215             }
1216             SERVER_END_REQ;
1217             if (status == STATUS_SUCCESS)
1218             {
1219                 /* We call times(2) for kernel time or user time */
1220                 /* We can only (portably) do this for the current thread */
1221                 if (handle == GetCurrentThread())
1222                 {
1223                     struct tms time_buf;
1224                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1225
1226                     times(&time_buf);
1227                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1228                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1229                 }
1230                 else
1231                 {
1232                     static BOOL reported = FALSE;
1233
1234                     kusrt.KernelTime.QuadPart = 0;
1235                     kusrt.UserTime.QuadPart = 0;
1236                     if (reported)
1237                         TRACE("Cannot get kerneltime or usertime of other threads\n");
1238                     else
1239                     {
1240                         FIXME("Cannot get kerneltime or usertime of other threads\n");
1241                         reported = TRUE;
1242                     }
1243                 }
1244                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1245                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1246             }
1247         }
1248         return status;
1249     case ThreadDescriptorTableEntry:
1250         {
1251 #ifdef __i386__
1252             THREAD_DESCRIPTOR_INFORMATION*      tdi = data;
1253             if (length < sizeof(*tdi))
1254                 status = STATUS_INFO_LENGTH_MISMATCH;
1255             else if (!(tdi->Selector & 4))  /* GDT selector */
1256             {
1257                 unsigned sel = tdi->Selector & ~3;  /* ignore RPL */
1258                 status = STATUS_SUCCESS;
1259                 if (!sel)  /* null selector */
1260                     memset( &tdi->Entry, 0, sizeof(tdi->Entry) );
1261                 else
1262                 {
1263                     tdi->Entry.BaseLow                   = 0;
1264                     tdi->Entry.HighWord.Bits.BaseMid     = 0;
1265                     tdi->Entry.HighWord.Bits.BaseHi      = 0;
1266                     tdi->Entry.LimitLow                  = 0xffff;
1267                     tdi->Entry.HighWord.Bits.LimitHi     = 0xf;
1268                     tdi->Entry.HighWord.Bits.Dpl         = 3;
1269                     tdi->Entry.HighWord.Bits.Sys         = 0;
1270                     tdi->Entry.HighWord.Bits.Pres        = 1;
1271                     tdi->Entry.HighWord.Bits.Granularity = 1;
1272                     tdi->Entry.HighWord.Bits.Default_Big = 1;
1273                     tdi->Entry.HighWord.Bits.Type        = 0x12;
1274                     /* it has to be one of the system GDT selectors */
1275                     if (sel != (wine_get_ds() & ~3) && sel != (wine_get_ss() & ~3))
1276                     {
1277                         if (sel == (wine_get_cs() & ~3))
1278                             tdi->Entry.HighWord.Bits.Type |= 8;  /* code segment */
1279                         else status = STATUS_ACCESS_DENIED;
1280                     }
1281                 }
1282             }
1283             else
1284             {
1285                 SERVER_START_REQ( get_selector_entry )
1286                 {
1287                     req->handle = handle;
1288                     req->entry = tdi->Selector >> 3;
1289                     status = wine_server_call( req );
1290                     if (!status)
1291                     {
1292                         if (!(reply->flags & WINE_LDT_FLAGS_ALLOCATED))
1293                             status = STATUS_ACCESS_VIOLATION;
1294                         else
1295                         {
1296                             wine_ldt_set_base ( &tdi->Entry, (void *)reply->base );
1297                             wine_ldt_set_limit( &tdi->Entry, reply->limit );
1298                             wine_ldt_set_flags( &tdi->Entry, reply->flags );
1299                         }
1300                     }
1301                 }
1302                 SERVER_END_REQ;
1303             }
1304             if (status == STATUS_SUCCESS && ret_len)
1305                 /* yes, that's a bit strange, but it's the way it is */
1306                 *ret_len = sizeof(LDT_ENTRY);
1307 #else
1308             status = STATUS_NOT_IMPLEMENTED;
1309 #endif
1310             return status;
1311         }
1312     case ThreadAmILastThread:
1313         {
1314             SERVER_START_REQ(get_thread_info)
1315             {
1316                 req->handle = handle;
1317                 req->tid_in = 0;
1318                 status = wine_server_call( req );
1319                 if (status == STATUS_SUCCESS)
1320                 {
1321                     BOOLEAN last = reply->last;
1322                     if (data) memcpy( data, &last, min( length, sizeof(last) ));
1323                     if (ret_len) *ret_len = min( length, sizeof(last) );
1324                 }
1325             }
1326             SERVER_END_REQ;
1327             return status;
1328         }
1329     case ThreadPriority:
1330     case ThreadBasePriority:
1331     case ThreadAffinityMask:
1332     case ThreadImpersonationToken:
1333     case ThreadEnableAlignmentFaultFixup:
1334     case ThreadEventPair_Reusable:
1335     case ThreadQuerySetWin32StartAddress:
1336     case ThreadZeroTlsCell:
1337     case ThreadPerformanceCount:
1338     case ThreadIdealProcessor:
1339     case ThreadPriorityBoost:
1340     case ThreadSetTlsArrayAddress:
1341     case ThreadIsIoPending:
1342     default:
1343         FIXME( "info class %d not supported yet\n", class );
1344         return STATUS_NOT_IMPLEMENTED;
1345     }
1346 }
1347
1348
1349 /******************************************************************************
1350  *              NtSetInformationThread  (NTDLL.@)
1351  *              ZwSetInformationThread  (NTDLL.@)
1352  */
1353 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1354                                         LPCVOID data, ULONG length )
1355 {
1356     NTSTATUS status;
1357     switch(class)
1358     {
1359     case ThreadZeroTlsCell:
1360         if (handle == GetCurrentThread())
1361         {
1362             LIST_ENTRY *entry;
1363             DWORD index;
1364
1365             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1366             index = *(const DWORD *)data;
1367             if (index < TLS_MINIMUM_AVAILABLE)
1368             {
1369                 RtlAcquirePebLock();
1370                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1371                 {
1372                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1373                     teb->TlsSlots[index] = 0;
1374                 }
1375                 RtlReleasePebLock();
1376             }
1377             else
1378             {
1379                 index -= TLS_MINIMUM_AVAILABLE;
1380                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1381                     return STATUS_INVALID_PARAMETER;
1382                 RtlAcquirePebLock();
1383                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1384                 {
1385                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1386                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1387                 }
1388                 RtlReleasePebLock();
1389             }
1390             return STATUS_SUCCESS;
1391         }
1392         FIXME( "ZeroTlsCell not supported on other threads\n" );
1393         return STATUS_NOT_IMPLEMENTED;
1394
1395     case ThreadImpersonationToken:
1396         {
1397             const HANDLE *phToken = data;
1398             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1399             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1400             SERVER_START_REQ( set_thread_info )
1401             {
1402                 req->handle   = handle;
1403                 req->token    = *phToken;
1404                 req->mask     = SET_THREAD_INFO_TOKEN;
1405                 status = wine_server_call( req );
1406             }
1407             SERVER_END_REQ;
1408         }
1409         return status;
1410     case ThreadBasePriority:
1411         {
1412             const DWORD *pprio = data;
1413             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1414             SERVER_START_REQ( set_thread_info )
1415             {
1416                 req->handle   = handle;
1417                 req->priority = *pprio;
1418                 req->mask     = SET_THREAD_INFO_PRIORITY;
1419                 status = wine_server_call( req );
1420             }
1421             SERVER_END_REQ;
1422         }
1423         return status;
1424     case ThreadAffinityMask:
1425         {
1426             const DWORD *paff = data;
1427             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1428             SERVER_START_REQ( set_thread_info )
1429             {
1430                 req->handle   = handle;
1431                 req->affinity = *paff;
1432                 req->mask     = SET_THREAD_INFO_AFFINITY;
1433                 status = wine_server_call( req );
1434             }
1435             SERVER_END_REQ;
1436         }
1437         return status;
1438     case ThreadBasicInformation:
1439     case ThreadTimes:
1440     case ThreadPriority:
1441     case ThreadDescriptorTableEntry:
1442     case ThreadEnableAlignmentFaultFixup:
1443     case ThreadEventPair_Reusable:
1444     case ThreadQuerySetWin32StartAddress:
1445     case ThreadPerformanceCount:
1446     case ThreadAmILastThread:
1447     case ThreadIdealProcessor:
1448     case ThreadPriorityBoost:
1449     case ThreadSetTlsArrayAddress:
1450     case ThreadIsIoPending:
1451     default:
1452         FIXME( "info class %d not supported yet\n", class );
1453         return STATUS_NOT_IMPLEMENTED;
1454     }
1455 }
1456
1457
1458 /**********************************************************************
1459  *           NtCurrentTeb   (NTDLL.@)
1460  */
1461 #if defined(__i386__) && defined(__GNUC__)
1462
1463 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" )
1464
1465 #elif defined(__i386__) && defined(_MSC_VER)
1466
1467 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1468
1469 #else
1470
1471 /**********************************************************************/
1472
1473 TEB * WINAPI NtCurrentTeb(void)
1474 {
1475     return pthread_functions.get_current_teb();
1476 }
1477
1478 #endif  /* __i386__ */