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