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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <sys/types.h>
  25 #ifdef HAVE_SYS_MMAN_H
  26 #include <sys/mman.h>
  27 #endif
  28 #ifdef HAVE_SYS_TIMES_H
  29 #include <sys/times.h>
  30 #endif
  31
  32 #define NONAMELESSUNION
  33 #include "ntstatus.h"
  34 #define WIN32_NO_STATUS
  35 #include "thread.h"
  36 #include "winternl.h"
  37 #include "wine/library.h"
  38 #include "wine/server.h"
  39 #include "wine/pthread.h"
  40 #include "wine/debug.h"
  41 #include "ntdll_misc.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  44
  45 /* info passed to a starting thread */
  46 struct startup_info
  47 {
  48     struct wine_pthread_thread_info pthread_info;
  49     PRTL_THREAD_START_ROUTINE       entry_point;
  50     void                           *entry_arg;
  51 };
  52
  53 static PEB peb;
  54 static PEB_LDR_DATA ldr;
  55 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  56 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  57 static RTL_BITMAP tls_bitmap;
  58 static RTL_BITMAP tls_expansion_bitmap;
  59 static LIST_ENTRY tls_links;
  60 static size_t sigstack_total_size;
  61
  62 struct wine_pthread_functions pthread_functions = { NULL };
  63
  64 /***********************************************************************
  65  *           init_teb
  66  */
  67 static inline NTSTATUS init_teb( TEB *teb )
  68 {
  69     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  70
  71     teb->Tib.ExceptionList = (void *)~0UL;
  72     teb->Tib.StackBase     = (void *)~0UL;
  73     teb->Tib.Self          = &teb->Tib;
  74     teb->Peb               = &peb;
  75     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
  76     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  77
  78     if (!(thread_data->teb_sel = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
  79     thread_data->request_fd = -1;
  80     thread_data->reply_fd   = -1;
  81     thread_data->wait_fd[0] = -1;
  82     thread_data->wait_fd[1] = -1;
  83
  84     return STATUS_SUCCESS;
  85 }
  86
  87
  88 /***********************************************************************
  89  *           free_teb
  90  */
  91 static inline void free_teb( TEB *teb )
  92 {
  93     SIZE_T size = 0;
  94     void *addr = teb;
  95     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  96
  97     NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
  98     wine_ldt_free_fs( thread_data->teb_sel );
  99     munmap( teb, sigstack_total_size );
 100 }
 101
 102
 103 /***********************************************************************
 104  *           thread_init
 105  *
 106  * Setup the initial thread.
 107  *
 108  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 109  */
 110 void thread_init(void)
 111 {
 112     TEB *teb;
 113     void *addr;
 114     SIZE_T info_size;
 115     struct ntdll_thread_data *thread_data;
 116     struct wine_pthread_thread_info thread_info;
 117     static struct debug_info debug_info;  /* debug info for initial thread */
 118
 119     peb.NumberOfProcessors = 1;
 120     peb.ProcessParameters  = &params;
 121     peb.TlsBitmap          = &tls_bitmap;
 122     peb.TlsExpansionBitmap = &tls_expansion_bitmap;
 123     peb.LdrData            = &ldr;
 124     params.CurrentDirectory.DosPath.Buffer = current_dir;
 125     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 126     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 127     RtlInitializeBitMap( &tls_bitmap, peb.TlsBitmapBits, sizeof(peb.TlsBitmapBits) * 8 );
 128     RtlInitializeBitMap( &tls_expansion_bitmap, peb.TlsExpansionBitmapBits,
 129                          sizeof(peb.TlsExpansionBitmapBits) * 8 );
 130     InitializeListHead( &ldr.InLoadOrderModuleList );
 131     InitializeListHead( &ldr.InMemoryOrderModuleList );
 132     InitializeListHead( &ldr.InInitializationOrderModuleList );
 133     InitializeListHead( &tls_links );
 134
 135     sigstack_total_size = get_signal_stack_total_size();
 136     thread_info.teb_size = sigstack_total_size;
 137     VIRTUAL_alloc_teb( &addr, thread_info.teb_size, TRUE );
 138     teb = addr;
 139     init_teb( teb );
 140     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 141     thread_data->debug_info = &debug_info;
 142     InsertHeadList( &tls_links, &teb->TlsLinks );
 143
 144     thread_info.stack_base = NULL;
 145     thread_info.stack_size = 0;
 146     thread_info.teb_base   = teb;
 147     thread_info.teb_sel    = thread_data->teb_sel;
 148     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 149     pthread_functions.init_current_teb( &thread_info );
 150     pthread_functions.init_thread( &thread_info );
 151
 152     debug_info.str_pos = debug_info.strings;
 153     debug_info.out_pos = debug_info.output;
 154     debug_init();
 155
 156     /* setup the server connection */
 157     server_init_process();
 158     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 159
 160     /* create the process heap */
 161     if (!(peb.ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 162     {
 163         MESSAGE( "wine: failed to create the process heap\n" );
 164         exit(1);
 165     }
 166
 167     /* allocate user parameters */
 168     if (info_size)
 169     {
 170         RTL_USER_PROCESS_PARAMETERS *params = NULL;
 171
 172         if (NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 173                                      MEM_COMMIT, PAGE_READWRITE ) == STATUS_SUCCESS)
 174         {
 175             params->AllocationSize = info_size;
 176             NtCurrentTeb()->Peb->ProcessParameters = params;
 177         }
 178     }
 179     else
 180     {
 181         /* This is wine specific: we have no parent (we're started from unix)
 182          * so, create a simple console with bare handles to unix stdio
 183          */
 184         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 185         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 186         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 187     }
 188 }
 189
 190
 191 /***********************************************************************
 192  *           start_thread
 193  *
 194  * Startup routine for a newly created thread.
 195  */
 196 static void start_thread( struct wine_pthread_thread_info *info )
 197 {
 198     TEB *teb = info->teb_base;
 199     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 200     struct startup_info *startup_info = (struct startup_info *)info;
 201     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 202     void *arg = startup_info->entry_arg;
 203     struct debug_info debug_info;
 204     SIZE_T size, page_size = getpagesize();
 205
 206     debug_info.str_pos = debug_info.strings;
 207     debug_info.out_pos = debug_info.output;
 208     thread_data->debug_info = &debug_info;
 209
 210     pthread_functions.init_current_teb( info );
 211     SIGNAL_Init();
 212     server_init_thread( info->pid, info->tid, func );
 213     pthread_functions.init_thread( info );
 214
 215     /* allocate a memory view for the stack */
 216     size = info->stack_size;
 217     teb->DeallocationStack = info->stack_base;
 218     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 219                              &size, MEM_SYSTEM, PAGE_READWRITE );
 220     /* limit is lower than base since the stack grows down */
 221     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 222     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 223
 224     /* setup the guard page */
 225     size = page_size;
 226     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 227     RtlFreeHeap( GetProcessHeap(), 0, info );
 228
 229     RtlAcquirePebLock();
 230     InsertHeadList( &tls_links, &teb->TlsLinks );
 231     RtlReleasePebLock();
 232
 233     func( arg );
 234 }
 235
 236
 237 /***********************************************************************
 238  *              RtlCreateUserThread   (NTDLL.@)
 239  */
 240 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 241                                      BOOLEAN suspended, PVOID stack_addr,
 242                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 243                                      PRTL_THREAD_START_ROUTINE start, void *param,
 244                                      HANDLE *handle_ptr, CLIENT_ID *id )
 245 {
 246     struct ntdll_thread_data *thread_data = NULL;
 247     struct startup_info *info = NULL;
 248     void *addr;
 249     HANDLE handle = 0;
 250     TEB *teb;
 251     DWORD tid = 0;
 252     int request_pipe[2];
 253     NTSTATUS status;
 254     SIZE_T page_size = getpagesize();
 255
 256     if( ! is_current_process( process ) )
 257     {
 258         ERR("Unsupported on other process\n");
 259         return STATUS_ACCESS_DENIED;
 260     }
 261
 262     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 263     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 264     wine_server_send_fd( request_pipe[0] );
 265
 266     SERVER_START_REQ( new_thread )
 267     {
 268         req->access     = THREAD_ALL_ACCESS;
 269         req->attributes = 0;  /* FIXME */
 270         req->suspend    = suspended;
 271         req->request_fd = request_pipe[0];
 272         if (!(status = wine_server_call( req )))
 273         {
 274             handle = reply->handle;
 275             tid = reply->tid;
 276         }
 277         close( request_pipe[0] );
 278     }
 279     SERVER_END_REQ;
 280
 281     if (status) goto error;
 282
 283     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 284     {
 285         status = STATUS_NO_MEMORY;
 286         goto error;
 287     }
 288
 289     info->pthread_info.teb_size = sigstack_total_size;
 290     if ((status = VIRTUAL_alloc_teb( &addr, info->pthread_info.teb_size, FALSE ))) goto error;
 291     teb = addr;
 292     if ((status = init_teb( teb ))) goto error;
 293
 294     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 295     teb->ClientId.UniqueThread  = (HANDLE)tid;
 296
 297     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 298     thread_data->request_fd  = request_pipe[1];
 299
 300     info->pthread_info.teb_base = teb;
 301     info->pthread_info.teb_sel  = thread_data->teb_sel;
 302
 303     if (!stack_reserve || !stack_commit)
 304     {
 305         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 306         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 307         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 308     }
 309     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 310     stack_reserve += page_size;  /* for the guard page */
 311     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 312     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 313
 314     info->pthread_info.stack_base = NULL;
 315     info->pthread_info.stack_size = stack_reserve;
 316     info->pthread_info.entry      = start_thread;
 317     info->entry_point             = start;
 318     info->entry_arg               = param;
 319
 320     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 321     {
 322         status = STATUS_NO_MEMORY;
 323         goto error;
 324     }
 325
 326     if (id) id->UniqueThread = (HANDLE)tid;
 327     if (handle_ptr) *handle_ptr = handle;
 328     else NtClose( handle );
 329
 330     return STATUS_SUCCESS;
 331
 332 error:
 333     if (thread_data) wine_ldt_free_fs( thread_data->teb_sel );
 334     if (addr)
 335     {
 336         SIZE_T size = 0;
 337         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 338     }
 339     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 340     if (handle) NtClose( handle );
 341     close( request_pipe[1] );
 342     return status;
 343 }
 344
 345
 346 /***********************************************************************
 347  *           RtlExitUserThread  (NTDLL.@)
 348  */
 349 void WINAPI RtlExitUserThread( ULONG status )
 350 {
 351     LdrShutdownThread();
 352     server_exit_thread( status );
 353 }
 354
 355
 356 /***********************************************************************
 357  *              NtOpenThread   (NTDLL.@)
 358  *              ZwOpenThread   (NTDLL.@)
 359  */
 360 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 361                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 362 {
 363     NTSTATUS ret;
 364
 365     SERVER_START_REQ( open_thread )
 366     {
 367         req->tid        = (thread_id_t)id->UniqueThread;
 368         req->access     = access;
 369         req->attributes = attr ? attr->Attributes : 0;
 370         ret = wine_server_call( req );
 371         *handle = reply->handle;
 372     }
 373     SERVER_END_REQ;
 374     return ret;
 375 }
 376
 377
 378 /******************************************************************************
 379  *              NtSuspendThread   (NTDLL.@)
 380  *              ZwSuspendThread   (NTDLL.@)
 381  */
 382 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 383 {
 384     NTSTATUS ret;
 385
 386     SERVER_START_REQ( suspend_thread )
 387     {
 388         req->handle = handle;
 389         if (!(ret = wine_server_call( req ))) *count = reply->count;
 390     }
 391     SERVER_END_REQ;
 392     return ret;
 393 }
 394
 395
 396 /******************************************************************************
 397  *              NtResumeThread   (NTDLL.@)
 398  *              ZwResumeThread   (NTDLL.@)
 399  */
 400 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 401 {
 402     NTSTATUS ret;
 403
 404     SERVER_START_REQ( resume_thread )
 405     {
 406         req->handle = handle;
 407         if (!(ret = wine_server_call( req ))) *count = reply->count;
 408     }
 409     SERVER_END_REQ;
 410     return ret;
 411 }
 412
 413
 414 /******************************************************************************
 415  *              NtAlertResumeThread   (NTDLL.@)
 416  *              ZwAlertResumeThread   (NTDLL.@)
 417  */
 418 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 419 {
 420     FIXME( "stub: should alert thread %p\n", handle );
 421     return NtResumeThread( handle, count );
 422 }
 423
 424
 425 /******************************************************************************
 426  *              NtAlertThread   (NTDLL.@)
 427  *              ZwAlertThread   (NTDLL.@)
 428  */
 429 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 430 {
 431     FIXME( "stub: %p\n", handle );
 432     return STATUS_NOT_IMPLEMENTED;
 433 }
 434
 435
 436 /******************************************************************************
 437  *              NtTerminateThread  (NTDLL.@)
 438  *              ZwTerminateThread  (NTDLL.@)
 439  */
 440 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 441 {
 442     NTSTATUS ret;
 443     BOOL self, last;
 444
 445     SERVER_START_REQ( terminate_thread )
 446     {
 447         req->handle    = handle;
 448         req->exit_code = exit_code;
 449         ret = wine_server_call( req );
 450         self = !ret && reply->self;
 451         last = reply->last;
 452     }
 453     SERVER_END_REQ;
 454
 455     if (self)
 456     {
 457         if (last) exit( exit_code );
 458         else server_abort_thread( exit_code );
 459     }
 460     return ret;
 461 }
 462
 463
 464 /******************************************************************************
 465  *              NtQueueApcThread  (NTDLL.@)
 466  */
 467 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 468                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 469 {
 470     NTSTATUS ret;
 471     SERVER_START_REQ( queue_apc )
 472     {
 473         req->handle = handle;
 474         req->user   = 1;
 475         req->func   = func;
 476         req->arg1   = (void *)arg1;
 477         req->arg2   = (void *)arg2;
 478         req->arg3   = (void *)arg3;
 479         ret = wine_server_call( req );
 480     }
 481     SERVER_END_REQ;
 482     return ret;
 483 }
 484
 485
 486 /***********************************************************************
 487  *              NtSetContextThread  (NTDLL.@)
 488  *              ZwSetContextThread  (NTDLL.@)
 489  */
 490 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 491 {
 492     NTSTATUS ret;
 493     DWORD dummy, i;
 494
 495     SERVER_START_REQ( set_thread_context )
 496     {
 497         req->handle  = handle;
 498         req->flags   = context->ContextFlags;
 499         req->suspend = 0;
 500         wine_server_add_data( req, context, sizeof(*context) );
 501         ret = wine_server_call( req );
 502     }
 503     SERVER_END_REQ;
 504
 505     if (ret == STATUS_PENDING)
 506     {
 507         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 508         {
 509             for (i = 0; i < 100; i++)
 510             {
 511                 SERVER_START_REQ( set_thread_context )
 512                 {
 513                     req->handle  = handle;
 514                     req->flags   = context->ContextFlags;
 515                     req->suspend = 0;
 516                     wine_server_add_data( req, context, sizeof(*context) );
 517                     ret = wine_server_call( req );
 518                 }
 519                 SERVER_END_REQ;
 520                 if (ret != STATUS_PENDING) break;
 521                 NtYieldExecution();
 522             }
 523             NtResumeThread( handle, &dummy );
 524         }
 525     }
 526
 527     if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 528     return ret;
 529 }
 530
 531
 532 /* copy a context structure according to the flags */
 533 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 534 {
 535 #ifdef __i386__
 536     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 537     if (flags & CONTEXT_INTEGER)
 538     {
 539         to->Eax = from->Eax;
 540         to->Ebx = from->Ebx;
 541         to->Ecx = from->Ecx;
 542         to->Edx = from->Edx;
 543         to->Esi = from->Esi;
 544         to->Edi = from->Edi;
 545     }
 546     if (flags & CONTEXT_CONTROL)
 547     {
 548         to->Ebp    = from->Ebp;
 549         to->Esp    = from->Esp;
 550         to->Eip    = from->Eip;
 551         to->SegCs  = from->SegCs;
 552         to->SegSs  = from->SegSs;
 553         to->EFlags = from->EFlags;
 554     }
 555     if (flags & CONTEXT_SEGMENTS)
 556     {
 557         to->SegDs = from->SegDs;
 558         to->SegEs = from->SegEs;
 559         to->SegFs = from->SegFs;
 560         to->SegGs = from->SegGs;
 561     }
 562     if (flags & CONTEXT_DEBUG_REGISTERS)
 563     {
 564         to->Dr0 = from->Dr0;
 565         to->Dr1 = from->Dr1;
 566         to->Dr2 = from->Dr2;
 567         to->Dr3 = from->Dr3;
 568         to->Dr6 = from->Dr6;
 569         to->Dr7 = from->Dr7;
 570     }
 571     if (flags & CONTEXT_FLOATING_POINT)
 572     {
 573         to->FloatSave = from->FloatSave;
 574     }
 575 #elif defined(__x86_64__)
 576     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 577     if (flags & CONTEXT_CONTROL)
 578     {
 579         to->Rbp    = from->Rbp;
 580         to->Rip    = from->Rip;
 581         to->Rsp    = from->Rsp;
 582         to->SegCs  = from->SegCs;
 583         to->SegSs  = from->SegSs;
 584         to->EFlags = from->EFlags;
 585         to->MxCsr  = from->MxCsr;
 586     }
 587     if (flags & CONTEXT_INTEGER)
 588     {
 589         to->Rax = from->Rax;
 590         to->Rcx = from->Rcx;
 591         to->Rdx = from->Rdx;
 592         to->Rbx = from->Rbx;
 593         to->Rsi = from->Rsi;
 594         to->Rdi = from->Rdi;
 595         to->R8  = from->R8;
 596         to->R9  = from->R9;
 597         to->R10 = from->R10;
 598         to->R11 = from->R11;
 599         to->R12 = from->R12;
 600         to->R13 = from->R13;
 601         to->R14 = from->R14;
 602         to->R15 = from->R15;
 603     }
 604     if (flags & CONTEXT_SEGMENTS)
 605     {
 606         to->SegDs = from->SegDs;
 607         to->SegEs = from->SegEs;
 608         to->SegFs = from->SegFs;
 609         to->SegGs = from->SegGs;
 610     }
 611     if (flags & CONTEXT_FLOATING_POINT)
 612     {
 613         to->u.FltSave = from->u.FltSave;
 614     }
 615     if (flags & CONTEXT_DEBUG_REGISTERS)
 616     {
 617         to->Dr0 = from->Dr0;
 618         to->Dr1 = from->Dr1;
 619         to->Dr2 = from->Dr2;
 620         to->Dr3 = from->Dr3;
 621         to->Dr6 = from->Dr6;
 622         to->Dr7 = from->Dr7;
 623     }
 624 #elif defined(__sparc__)
 625     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 626     if (flags & CONTEXT_CONTROL)
 627     {
 628         to->psr = from->psr;
 629         to->pc  = from->pc;
 630         to->npc = from->npc;
 631         to->y   = from->y;
 632         to->wim = from->wim;
 633         to->tbr = from->tbr;
 634     }
 635     if (flags & CONTEXT_INTEGER)
 636     {
 637         to->g0 = from->g0;
 638         to->g1 = from->g1;
 639         to->g2 = from->g2;
 640         to->g3 = from->g3;
 641         to->g4 = from->g4;
 642         to->g5 = from->g5;
 643         to->g6 = from->g6;
 644         to->g7 = from->g7;
 645         to->o0 = from->o0;
 646         to->o1 = from->o1;
 647         to->o2 = from->o2;
 648         to->o3 = from->o3;
 649         to->o4 = from->o4;
 650         to->o5 = from->o5;
 651         to->o6 = from->o6;
 652         to->o7 = from->o7;
 653         to->l0 = from->l0;
 654         to->l1 = from->l1;
 655         to->l2 = from->l2;
 656         to->l3 = from->l3;
 657         to->l4 = from->l4;
 658         to->l5 = from->l5;
 659         to->l6 = from->l6;
 660         to->l7 = from->l7;
 661         to->i0 = from->i0;
 662         to->i1 = from->i1;
 663         to->i2 = from->i2;
 664         to->i3 = from->i3;
 665         to->i4 = from->i4;
 666         to->i5 = from->i5;
 667         to->i6 = from->i6;
 668         to->i7 = from->i7;
 669     }
 670     if (flags & CONTEXT_FLOATING_POINT)
 671     {
 672         /* FIXME */
 673     }
 674 #elif defined(__powerpc__)
 675     /* Has no CPU id */
 676     if (flags & CONTEXT_CONTROL)
 677     {
 678         to->Msr = from->Msr;
 679         to->Ctr = from->Ctr;
 680         to->Iar = from->Iar;
 681     }
 682     if (flags & CONTEXT_INTEGER)
 683     {
 684         to->Gpr0  = from->Gpr0;
 685         to->Gpr1  = from->Gpr1;
 686         to->Gpr2  = from->Gpr2;
 687         to->Gpr3  = from->Gpr3;
 688         to->Gpr4  = from->Gpr4;
 689         to->Gpr5  = from->Gpr5;
 690         to->Gpr6  = from->Gpr6;
 691         to->Gpr7  = from->Gpr7;
 692         to->Gpr8  = from->Gpr8;
 693         to->Gpr9  = from->Gpr9;
 694         to->Gpr10 = from->Gpr10;
 695         to->Gpr11 = from->Gpr11;
 696         to->Gpr12 = from->Gpr12;
 697         to->Gpr13 = from->Gpr13;
 698         to->Gpr14 = from->Gpr14;
 699         to->Gpr15 = from->Gpr15;
 700         to->Gpr16 = from->Gpr16;
 701         to->Gpr17 = from->Gpr17;
 702         to->Gpr18 = from->Gpr18;
 703         to->Gpr19 = from->Gpr19;
 704         to->Gpr20 = from->Gpr20;
 705         to->Gpr21 = from->Gpr21;
 706         to->Gpr22 = from->Gpr22;
 707         to->Gpr23 = from->Gpr23;
 708         to->Gpr24 = from->Gpr24;
 709         to->Gpr25 = from->Gpr25;
 710         to->Gpr26 = from->Gpr26;
 711         to->Gpr27 = from->Gpr27;
 712         to->Gpr28 = from->Gpr28;
 713         to->Gpr29 = from->Gpr29;
 714         to->Gpr30 = from->Gpr30;
 715         to->Gpr31 = from->Gpr31;
 716         to->Xer   = from->Xer;
 717         to->Cr    = from->Cr;
 718     }
 719     if (flags & CONTEXT_FLOATING_POINT)
 720     {
 721         to->Fpr0  = from->Fpr0;
 722         to->Fpr1  = from->Fpr1;
 723         to->Fpr2  = from->Fpr2;
 724         to->Fpr3  = from->Fpr3;
 725         to->Fpr4  = from->Fpr4;
 726         to->Fpr5  = from->Fpr5;
 727         to->Fpr6  = from->Fpr6;
 728         to->Fpr7  = from->Fpr7;
 729         to->Fpr8  = from->Fpr8;
 730         to->Fpr9  = from->Fpr9;
 731         to->Fpr10 = from->Fpr10;
 732         to->Fpr11 = from->Fpr11;
 733         to->Fpr12 = from->Fpr12;
 734         to->Fpr13 = from->Fpr13;
 735         to->Fpr14 = from->Fpr14;
 736         to->Fpr15 = from->Fpr15;
 737         to->Fpr16 = from->Fpr16;
 738         to->Fpr17 = from->Fpr17;
 739         to->Fpr18 = from->Fpr18;
 740         to->Fpr19 = from->Fpr19;
 741         to->Fpr20 = from->Fpr20;
 742         to->Fpr21 = from->Fpr21;
 743         to->Fpr22 = from->Fpr22;
 744         to->Fpr23 = from->Fpr23;
 745         to->Fpr24 = from->Fpr24;
 746         to->Fpr25 = from->Fpr25;
 747         to->Fpr26 = from->Fpr26;
 748         to->Fpr27 = from->Fpr27;
 749         to->Fpr28 = from->Fpr28;
 750         to->Fpr29 = from->Fpr29;
 751         to->Fpr30 = from->Fpr30;
 752         to->Fpr31 = from->Fpr31;
 753         to->Fpscr = from->Fpscr;
 754     }
 755 #else
 756 #error You must implement context copying for your CPU
 757 #endif
 758 }
 759
 760
 761 /***********************************************************************
 762  *              NtGetContextThread  (NTDLL.@)
 763  *              ZwGetContextThread  (NTDLL.@)
 764  */
 765 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 766 {
 767     NTSTATUS ret;
 768     CONTEXT ctx;
 769     DWORD dummy, i;
 770
 771     SERVER_START_REQ( get_thread_context )
 772     {
 773         req->handle  = handle;
 774         req->flags   = context->ContextFlags;
 775         req->suspend = 0;
 776         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 777         ret = wine_server_call( req );
 778     }
 779     SERVER_END_REQ;
 780
 781     if (ret == STATUS_PENDING)
 782     {
 783         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 784         {
 785             for (i = 0; i < 100; i++)
 786             {
 787                 SERVER_START_REQ( get_thread_context )
 788                 {
 789                     req->handle  = handle;
 790                     req->flags   = context->ContextFlags;
 791                     req->suspend = 0;
 792                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 793                     ret = wine_server_call( req );
 794                 }
 795                 SERVER_END_REQ;
 796                 if (ret != STATUS_PENDING) break;
 797                 NtYieldExecution();
 798             }
 799             NtResumeThread( handle, &dummy );
 800         }
 801     }
 802
 803     if (ret == STATUS_SUCCESS) copy_context( context, &ctx, context->ContextFlags );
 804     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 805     return ret;
 806 }
 807
 808
 809 /******************************************************************************
 810  *              NtQueryInformationThread  (NTDLL.@)
 811  *              ZwQueryInformationThread  (NTDLL.@)
 812  */
 813 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 814                                           void *data, ULONG length, ULONG *ret_len )
 815 {
 816     NTSTATUS status;
 817
 818     switch(class)
 819     {
 820     case ThreadBasicInformation:
 821         {
 822             THREAD_BASIC_INFORMATION info;
 823
 824             SERVER_START_REQ( get_thread_info )
 825             {
 826                 req->handle = handle;
 827                 req->tid_in = 0;
 828                 if (!(status = wine_server_call( req )))
 829                 {
 830                     info.ExitStatus             = reply->exit_code;
 831                     info.TebBaseAddress         = reply->teb;
 832                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 833                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 834                     info.AffinityMask           = reply->affinity;
 835                     info.Priority               = reply->priority;
 836                     info.BasePriority           = reply->priority;  /* FIXME */
 837                 }
 838             }
 839             SERVER_END_REQ;
 840             if (status == STATUS_SUCCESS)
 841             {
 842                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 843                 if (ret_len) *ret_len = min( length, sizeof(info) );
 844             }
 845         }
 846         return status;
 847     case ThreadTimes:
 848         {
 849             KERNEL_USER_TIMES   kusrt;
 850             /* We need to do a server call to get the creation time or exit time */
 851             /* This works on any thread */
 852             SERVER_START_REQ( get_thread_info )
 853             {
 854                 req->handle = handle;
 855                 req->tid_in = 0;
 856                 status = wine_server_call( req );
 857                 if (status == STATUS_SUCCESS)
 858                 {
 859                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 860                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 861                 }
 862             }
 863             SERVER_END_REQ;
 864             if (status == STATUS_SUCCESS)
 865             {
 866                 /* We call times(2) for kernel time or user time */
 867                 /* We can only (portably) do this for the current thread */
 868                 if (handle == GetCurrentThread())
 869                 {
 870                     struct tms time_buf;
 871                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 872
 873                     times(&time_buf);
 874                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 875                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 876                 }
 877                 else
 878                 {
 879                     kusrt.KernelTime.QuadPart = 0;
 880                     kusrt.UserTime.QuadPart = 0;
 881                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 882                 }
 883                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 884                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 885             }
 886         }
 887         return status;
 888     case ThreadPriority:
 889     case ThreadBasePriority:
 890     case ThreadAffinityMask:
 891     case ThreadImpersonationToken:
 892     case ThreadDescriptorTableEntry:
 893     case ThreadEnableAlignmentFaultFixup:
 894     case ThreadEventPair_Reusable:
 895     case ThreadQuerySetWin32StartAddress:
 896     case ThreadZeroTlsCell:
 897     case ThreadPerformanceCount:
 898     case ThreadAmILastThread:
 899     case ThreadIdealProcessor:
 900     case ThreadPriorityBoost:
 901     case ThreadSetTlsArrayAddress:
 902     case ThreadIsIoPending:
 903     default:
 904         FIXME( "info class %d not supported yet\n", class );
 905         return STATUS_NOT_IMPLEMENTED;
 906     }
 907 }
 908
 909
 910 /******************************************************************************
 911  *              NtSetInformationThread  (NTDLL.@)
 912  *              ZwSetInformationThread  (NTDLL.@)
 913  */
 914 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 915                                         LPCVOID data, ULONG length )
 916 {
 917     NTSTATUS status;
 918     switch(class)
 919     {
 920     case ThreadZeroTlsCell:
 921         if (handle == GetCurrentThread())
 922         {
 923             LIST_ENTRY *entry;
 924             DWORD index;
 925
 926             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 927             index = *(const DWORD *)data;
 928             if (index < TLS_MINIMUM_AVAILABLE)
 929             {
 930                 RtlAcquirePebLock();
 931                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 932                 {
 933                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 934                     teb->TlsSlots[index] = 0;
 935                 }
 936                 RtlReleasePebLock();
 937             }
 938             else
 939             {
 940                 index -= TLS_MINIMUM_AVAILABLE;
 941                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 942                     return STATUS_INVALID_PARAMETER;
 943                 RtlAcquirePebLock();
 944                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 945                 {
 946                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 947                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 948                 }
 949                 RtlReleasePebLock();
 950             }
 951             return STATUS_SUCCESS;
 952         }
 953         FIXME( "ZeroTlsCell not supported on other threads\n" );
 954         return STATUS_NOT_IMPLEMENTED;
 955
 956     case ThreadImpersonationToken:
 957         {
 958             const HANDLE *phToken = data;
 959             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
 960             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
 961             SERVER_START_REQ( set_thread_info )
 962             {
 963                 req->handle   = handle;
 964                 req->token    = *phToken;
 965                 req->mask     = SET_THREAD_INFO_TOKEN;
 966                 status = wine_server_call( req );
 967             }
 968             SERVER_END_REQ;
 969         }
 970         return status;
 971     case ThreadBasePriority:
 972         {
 973             const DWORD *pprio = data;
 974             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 975             SERVER_START_REQ( set_thread_info )
 976             {
 977                 req->handle   = handle;
 978                 req->priority = *pprio;
 979                 req->mask     = SET_THREAD_INFO_PRIORITY;
 980                 status = wine_server_call( req );
 981             }
 982             SERVER_END_REQ;
 983         }
 984         return status;
 985     case ThreadBasicInformation:
 986     case ThreadTimes:
 987     case ThreadPriority:
 988     case ThreadAffinityMask:
 989     case ThreadDescriptorTableEntry:
 990     case ThreadEnableAlignmentFaultFixup:
 991     case ThreadEventPair_Reusable:
 992     case ThreadQuerySetWin32StartAddress:
 993     case ThreadPerformanceCount:
 994     case ThreadAmILastThread:
 995     case ThreadIdealProcessor:
 996     case ThreadPriorityBoost:
 997     case ThreadSetTlsArrayAddress:
 998     case ThreadIsIoPending:
 999     default:
1000         FIXME( "info class %d not supported yet\n", class );
1001         return STATUS_NOT_IMPLEMENTED;
1002     }
1003 }
1004
1005
1006 /**********************************************************************
1007  *           NtCurrentTeb   (NTDLL.@)
1008  */
1009 #if defined(__i386__) && defined(__GNUC__)
1010
1011 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1012
1013 #elif defined(__i386__) && defined(_MSC_VER)
1014
1015 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1016
1017 #else
1018
1019 /**********************************************************************/
1020
1021 TEB * WINAPI NtCurrentTeb(void)
1022 {
1023     return pthread_functions.get_current_teb();
1024 }
1025
1026 #endif  /* __i386__ */