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     BOOL self = FALSE;
 495
 496 #ifdef __i386__
 497     /* on i386 debug registers always require a server call */
 498     self = ((handle == GetCurrentThread()) &&
 499             !(context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)));
 500 #endif
 501
 502     if (!self)
 503     {
 504         SERVER_START_REQ( set_thread_context )
 505         {
 506             req->handle  = handle;
 507             req->flags   = context->ContextFlags;
 508             req->suspend = 0;
 509             wine_server_add_data( req, context, sizeof(*context) );
 510             ret = wine_server_call( req );
 511             self = reply->self;
 512         }
 513         SERVER_END_REQ;
 514
 515         if (ret == STATUS_PENDING)
 516         {
 517             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 518             {
 519                 for (i = 0; i < 100; i++)
 520                 {
 521                     SERVER_START_REQ( set_thread_context )
 522                     {
 523                         req->handle  = handle;
 524                         req->flags   = context->ContextFlags;
 525                         req->suspend = 0;
 526                         wine_server_add_data( req, context, sizeof(*context) );
 527                         ret = wine_server_call( req );
 528                     }
 529                     SERVER_END_REQ;
 530                     if (ret != STATUS_PENDING) break;
 531                     NtYieldExecution();
 532                 }
 533                 NtResumeThread( handle, &dummy );
 534             }
 535             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 536         }
 537
 538         if (ret) return ret;
 539     }
 540
 541     if (self) set_cpu_context( context );
 542     return STATUS_SUCCESS;
 543 }
 544
 545
 546 /* copy a context structure according to the flags */
 547 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 548 {
 549 #ifdef __i386__
 550     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 551     if (flags & CONTEXT_INTEGER)
 552     {
 553         to->Eax = from->Eax;
 554         to->Ebx = from->Ebx;
 555         to->Ecx = from->Ecx;
 556         to->Edx = from->Edx;
 557         to->Esi = from->Esi;
 558         to->Edi = from->Edi;
 559     }
 560     if (flags & CONTEXT_CONTROL)
 561     {
 562         to->Ebp    = from->Ebp;
 563         to->Esp    = from->Esp;
 564         to->Eip    = from->Eip;
 565         to->SegCs  = from->SegCs;
 566         to->SegSs  = from->SegSs;
 567         to->EFlags = from->EFlags;
 568     }
 569     if (flags & CONTEXT_SEGMENTS)
 570     {
 571         to->SegDs = from->SegDs;
 572         to->SegEs = from->SegEs;
 573         to->SegFs = from->SegFs;
 574         to->SegGs = from->SegGs;
 575     }
 576     if (flags & CONTEXT_DEBUG_REGISTERS)
 577     {
 578         to->Dr0 = from->Dr0;
 579         to->Dr1 = from->Dr1;
 580         to->Dr2 = from->Dr2;
 581         to->Dr3 = from->Dr3;
 582         to->Dr6 = from->Dr6;
 583         to->Dr7 = from->Dr7;
 584     }
 585     if (flags & CONTEXT_FLOATING_POINT)
 586     {
 587         to->FloatSave = from->FloatSave;
 588     }
 589 #elif defined(__x86_64__)
 590     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 591     if (flags & CONTEXT_CONTROL)
 592     {
 593         to->Rbp    = from->Rbp;
 594         to->Rip    = from->Rip;
 595         to->Rsp    = from->Rsp;
 596         to->SegCs  = from->SegCs;
 597         to->SegSs  = from->SegSs;
 598         to->EFlags = from->EFlags;
 599         to->MxCsr  = from->MxCsr;
 600     }
 601     if (flags & CONTEXT_INTEGER)
 602     {
 603         to->Rax = from->Rax;
 604         to->Rcx = from->Rcx;
 605         to->Rdx = from->Rdx;
 606         to->Rbx = from->Rbx;
 607         to->Rsi = from->Rsi;
 608         to->Rdi = from->Rdi;
 609         to->R8  = from->R8;
 610         to->R9  = from->R9;
 611         to->R10 = from->R10;
 612         to->R11 = from->R11;
 613         to->R12 = from->R12;
 614         to->R13 = from->R13;
 615         to->R14 = from->R14;
 616         to->R15 = from->R15;
 617     }
 618     if (flags & CONTEXT_SEGMENTS)
 619     {
 620         to->SegDs = from->SegDs;
 621         to->SegEs = from->SegEs;
 622         to->SegFs = from->SegFs;
 623         to->SegGs = from->SegGs;
 624     }
 625     if (flags & CONTEXT_FLOATING_POINT)
 626     {
 627         to->u.FltSave = from->u.FltSave;
 628     }
 629     if (flags & CONTEXT_DEBUG_REGISTERS)
 630     {
 631         to->Dr0 = from->Dr0;
 632         to->Dr1 = from->Dr1;
 633         to->Dr2 = from->Dr2;
 634         to->Dr3 = from->Dr3;
 635         to->Dr6 = from->Dr6;
 636         to->Dr7 = from->Dr7;
 637     }
 638 #elif defined(__sparc__)
 639     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 640     if (flags & CONTEXT_CONTROL)
 641     {
 642         to->psr = from->psr;
 643         to->pc  = from->pc;
 644         to->npc = from->npc;
 645         to->y   = from->y;
 646         to->wim = from->wim;
 647         to->tbr = from->tbr;
 648     }
 649     if (flags & CONTEXT_INTEGER)
 650     {
 651         to->g0 = from->g0;
 652         to->g1 = from->g1;
 653         to->g2 = from->g2;
 654         to->g3 = from->g3;
 655         to->g4 = from->g4;
 656         to->g5 = from->g5;
 657         to->g6 = from->g6;
 658         to->g7 = from->g7;
 659         to->o0 = from->o0;
 660         to->o1 = from->o1;
 661         to->o2 = from->o2;
 662         to->o3 = from->o3;
 663         to->o4 = from->o4;
 664         to->o5 = from->o5;
 665         to->o6 = from->o6;
 666         to->o7 = from->o7;
 667         to->l0 = from->l0;
 668         to->l1 = from->l1;
 669         to->l2 = from->l2;
 670         to->l3 = from->l3;
 671         to->l4 = from->l4;
 672         to->l5 = from->l5;
 673         to->l6 = from->l6;
 674         to->l7 = from->l7;
 675         to->i0 = from->i0;
 676         to->i1 = from->i1;
 677         to->i2 = from->i2;
 678         to->i3 = from->i3;
 679         to->i4 = from->i4;
 680         to->i5 = from->i5;
 681         to->i6 = from->i6;
 682         to->i7 = from->i7;
 683     }
 684     if (flags & CONTEXT_FLOATING_POINT)
 685     {
 686         /* FIXME */
 687     }
 688 #elif defined(__powerpc__)
 689     /* Has no CPU id */
 690     if (flags & CONTEXT_CONTROL)
 691     {
 692         to->Msr = from->Msr;
 693         to->Ctr = from->Ctr;
 694         to->Iar = from->Iar;
 695     }
 696     if (flags & CONTEXT_INTEGER)
 697     {
 698         to->Gpr0  = from->Gpr0;
 699         to->Gpr1  = from->Gpr1;
 700         to->Gpr2  = from->Gpr2;
 701         to->Gpr3  = from->Gpr3;
 702         to->Gpr4  = from->Gpr4;
 703         to->Gpr5  = from->Gpr5;
 704         to->Gpr6  = from->Gpr6;
 705         to->Gpr7  = from->Gpr7;
 706         to->Gpr8  = from->Gpr8;
 707         to->Gpr9  = from->Gpr9;
 708         to->Gpr10 = from->Gpr10;
 709         to->Gpr11 = from->Gpr11;
 710         to->Gpr12 = from->Gpr12;
 711         to->Gpr13 = from->Gpr13;
 712         to->Gpr14 = from->Gpr14;
 713         to->Gpr15 = from->Gpr15;
 714         to->Gpr16 = from->Gpr16;
 715         to->Gpr17 = from->Gpr17;
 716         to->Gpr18 = from->Gpr18;
 717         to->Gpr19 = from->Gpr19;
 718         to->Gpr20 = from->Gpr20;
 719         to->Gpr21 = from->Gpr21;
 720         to->Gpr22 = from->Gpr22;
 721         to->Gpr23 = from->Gpr23;
 722         to->Gpr24 = from->Gpr24;
 723         to->Gpr25 = from->Gpr25;
 724         to->Gpr26 = from->Gpr26;
 725         to->Gpr27 = from->Gpr27;
 726         to->Gpr28 = from->Gpr28;
 727         to->Gpr29 = from->Gpr29;
 728         to->Gpr30 = from->Gpr30;
 729         to->Gpr31 = from->Gpr31;
 730         to->Xer   = from->Xer;
 731         to->Cr    = from->Cr;
 732     }
 733     if (flags & CONTEXT_FLOATING_POINT)
 734     {
 735         to->Fpr0  = from->Fpr0;
 736         to->Fpr1  = from->Fpr1;
 737         to->Fpr2  = from->Fpr2;
 738         to->Fpr3  = from->Fpr3;
 739         to->Fpr4  = from->Fpr4;
 740         to->Fpr5  = from->Fpr5;
 741         to->Fpr6  = from->Fpr6;
 742         to->Fpr7  = from->Fpr7;
 743         to->Fpr8  = from->Fpr8;
 744         to->Fpr9  = from->Fpr9;
 745         to->Fpr10 = from->Fpr10;
 746         to->Fpr11 = from->Fpr11;
 747         to->Fpr12 = from->Fpr12;
 748         to->Fpr13 = from->Fpr13;
 749         to->Fpr14 = from->Fpr14;
 750         to->Fpr15 = from->Fpr15;
 751         to->Fpr16 = from->Fpr16;
 752         to->Fpr17 = from->Fpr17;
 753         to->Fpr18 = from->Fpr18;
 754         to->Fpr19 = from->Fpr19;
 755         to->Fpr20 = from->Fpr20;
 756         to->Fpr21 = from->Fpr21;
 757         to->Fpr22 = from->Fpr22;
 758         to->Fpr23 = from->Fpr23;
 759         to->Fpr24 = from->Fpr24;
 760         to->Fpr25 = from->Fpr25;
 761         to->Fpr26 = from->Fpr26;
 762         to->Fpr27 = from->Fpr27;
 763         to->Fpr28 = from->Fpr28;
 764         to->Fpr29 = from->Fpr29;
 765         to->Fpr30 = from->Fpr30;
 766         to->Fpr31 = from->Fpr31;
 767         to->Fpscr = from->Fpscr;
 768     }
 769 #else
 770 #error You must implement context copying for your CPU
 771 #endif
 772 }
 773
 774
 775 /***********************************************************************
 776  *              NtGetContextThread  (NTDLL.@)
 777  *              ZwGetContextThread  (NTDLL.@)
 778  */
 779 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 780 {
 781     NTSTATUS ret;
 782     CONTEXT ctx;
 783     DWORD dummy, i;
 784
 785     SERVER_START_REQ( get_thread_context )
 786     {
 787         req->handle  = handle;
 788         req->flags   = context->ContextFlags;
 789         req->suspend = 0;
 790         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 791         ret = wine_server_call( req );
 792     }
 793     SERVER_END_REQ;
 794
 795     if (ret == STATUS_PENDING)
 796     {
 797         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 798         {
 799             for (i = 0; i < 100; i++)
 800             {
 801                 SERVER_START_REQ( get_thread_context )
 802                 {
 803                     req->handle  = handle;
 804                     req->flags   = context->ContextFlags;
 805                     req->suspend = 0;
 806                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 807                     ret = wine_server_call( req );
 808                 }
 809                 SERVER_END_REQ;
 810                 if (ret != STATUS_PENDING) break;
 811                 NtYieldExecution();
 812             }
 813             NtResumeThread( handle, &dummy );
 814         }
 815     }
 816
 817     if (ret == STATUS_SUCCESS) copy_context( context, &ctx, context->ContextFlags );
 818     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 819     return ret;
 820 }
 821
 822
 823 /******************************************************************************
 824  *              NtQueryInformationThread  (NTDLL.@)
 825  *              ZwQueryInformationThread  (NTDLL.@)
 826  */
 827 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 828                                           void *data, ULONG length, ULONG *ret_len )
 829 {
 830     NTSTATUS status;
 831
 832     switch(class)
 833     {
 834     case ThreadBasicInformation:
 835         {
 836             THREAD_BASIC_INFORMATION info;
 837
 838             SERVER_START_REQ( get_thread_info )
 839             {
 840                 req->handle = handle;
 841                 req->tid_in = 0;
 842                 if (!(status = wine_server_call( req )))
 843                 {
 844                     info.ExitStatus             = reply->exit_code;
 845                     info.TebBaseAddress         = reply->teb;
 846                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 847                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 848                     info.AffinityMask           = reply->affinity;
 849                     info.Priority               = reply->priority;
 850                     info.BasePriority           = reply->priority;  /* FIXME */
 851                 }
 852             }
 853             SERVER_END_REQ;
 854             if (status == STATUS_SUCCESS)
 855             {
 856                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 857                 if (ret_len) *ret_len = min( length, sizeof(info) );
 858             }
 859         }
 860         return status;
 861     case ThreadTimes:
 862         {
 863             KERNEL_USER_TIMES   kusrt;
 864             /* We need to do a server call to get the creation time or exit time */
 865             /* This works on any thread */
 866             SERVER_START_REQ( get_thread_info )
 867             {
 868                 req->handle = handle;
 869                 req->tid_in = 0;
 870                 status = wine_server_call( req );
 871                 if (status == STATUS_SUCCESS)
 872                 {
 873                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 874                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 875                 }
 876             }
 877             SERVER_END_REQ;
 878             if (status == STATUS_SUCCESS)
 879             {
 880                 /* We call times(2) for kernel time or user time */
 881                 /* We can only (portably) do this for the current thread */
 882                 if (handle == GetCurrentThread())
 883                 {
 884                     struct tms time_buf;
 885                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 886
 887                     times(&time_buf);
 888                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 889                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 890                 }
 891                 else
 892                 {
 893                     kusrt.KernelTime.QuadPart = 0;
 894                     kusrt.UserTime.QuadPart = 0;
 895                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 896                 }
 897                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 898                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 899             }
 900         }
 901         return status;
 902     case ThreadPriority:
 903     case ThreadBasePriority:
 904     case ThreadAffinityMask:
 905     case ThreadImpersonationToken:
 906     case ThreadDescriptorTableEntry:
 907     case ThreadEnableAlignmentFaultFixup:
 908     case ThreadEventPair_Reusable:
 909     case ThreadQuerySetWin32StartAddress:
 910     case ThreadZeroTlsCell:
 911     case ThreadPerformanceCount:
 912     case ThreadAmILastThread:
 913     case ThreadIdealProcessor:
 914     case ThreadPriorityBoost:
 915     case ThreadSetTlsArrayAddress:
 916     case ThreadIsIoPending:
 917     default:
 918         FIXME( "info class %d not supported yet\n", class );
 919         return STATUS_NOT_IMPLEMENTED;
 920     }
 921 }
 922
 923
 924 /******************************************************************************
 925  *              NtSetInformationThread  (NTDLL.@)
 926  *              ZwSetInformationThread  (NTDLL.@)
 927  */
 928 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 929                                         LPCVOID data, ULONG length )
 930 {
 931     NTSTATUS status;
 932     switch(class)
 933     {
 934     case ThreadZeroTlsCell:
 935         if (handle == GetCurrentThread())
 936         {
 937             LIST_ENTRY *entry;
 938             DWORD index;
 939
 940             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 941             index = *(const DWORD *)data;
 942             if (index < TLS_MINIMUM_AVAILABLE)
 943             {
 944                 RtlAcquirePebLock();
 945                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 946                 {
 947                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 948                     teb->TlsSlots[index] = 0;
 949                 }
 950                 RtlReleasePebLock();
 951             }
 952             else
 953             {
 954                 index -= TLS_MINIMUM_AVAILABLE;
 955                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 956                     return STATUS_INVALID_PARAMETER;
 957                 RtlAcquirePebLock();
 958                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 959                 {
 960                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 961                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 962                 }
 963                 RtlReleasePebLock();
 964             }
 965             return STATUS_SUCCESS;
 966         }
 967         FIXME( "ZeroTlsCell not supported on other threads\n" );
 968         return STATUS_NOT_IMPLEMENTED;
 969
 970     case ThreadImpersonationToken:
 971         {
 972             const HANDLE *phToken = data;
 973             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
 974             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
 975             SERVER_START_REQ( set_thread_info )
 976             {
 977                 req->handle   = handle;
 978                 req->token    = *phToken;
 979                 req->mask     = SET_THREAD_INFO_TOKEN;
 980                 status = wine_server_call( req );
 981             }
 982             SERVER_END_REQ;
 983         }
 984         return status;
 985     case ThreadBasePriority:
 986         {
 987             const DWORD *pprio = data;
 988             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 989             SERVER_START_REQ( set_thread_info )
 990             {
 991                 req->handle   = handle;
 992                 req->priority = *pprio;
 993                 req->mask     = SET_THREAD_INFO_PRIORITY;
 994                 status = wine_server_call( req );
 995             }
 996             SERVER_END_REQ;
 997         }
 998         return status;
 999     case ThreadAffinityMask:
1000         {
1001             const DWORD *paff = data;
1002             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1003             SERVER_START_REQ( set_thread_info )
1004             {
1005                 req->handle   = handle;
1006                 req->affinity = *paff;
1007                 req->mask     = SET_THREAD_INFO_AFFINITY;
1008                 status = wine_server_call( req );
1009             }
1010             SERVER_END_REQ;
1011         }
1012         return status;
1013     case ThreadBasicInformation:
1014     case ThreadTimes:
1015     case ThreadPriority:
1016     case ThreadDescriptorTableEntry:
1017     case ThreadEnableAlignmentFaultFixup:
1018     case ThreadEventPair_Reusable:
1019     case ThreadQuerySetWin32StartAddress:
1020     case ThreadPerformanceCount:
1021     case ThreadAmILastThread:
1022     case ThreadIdealProcessor:
1023     case ThreadPriorityBoost:
1024     case ThreadSetTlsArrayAddress:
1025     case ThreadIsIoPending:
1026     default:
1027         FIXME( "info class %d not supported yet\n", class );
1028         return STATUS_NOT_IMPLEMENTED;
1029     }
1030 }
1031
1032
1033 /**********************************************************************
1034  *           NtCurrentTeb   (NTDLL.@)
1035  */
1036 #if defined(__i386__) && defined(__GNUC__)
1037
1038 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1039
1040 #elif defined(__i386__) && defined(_MSC_VER)
1041
1042 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1043
1044 #else
1045
1046 /**********************************************************************/
1047
1048 TEB * WINAPI NtCurrentTeb(void)
1049 {
1050     return pthread_functions.get_current_teb();
1051 }
1052
1053 #endif  /* __i386__ */