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;
 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 = info->stack_base;
 223
 224     /* setup the guard page */
 225     size = 1;
 226     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size,
 227                             PAGE_READWRITE | PAGE_GUARD, NULL );
 228     RtlFreeHeap( GetProcessHeap(), 0, info );
 229
 230     RtlAcquirePebLock();
 231     InsertHeadList( &tls_links, &teb->TlsLinks );
 232     RtlReleasePebLock();
 233
 234     func( arg );
 235 }
 236
 237
 238 /***********************************************************************
 239  *              RtlCreateUserThread   (NTDLL.@)
 240  */
 241 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 242                                      BOOLEAN suspended, PVOID stack_addr,
 243                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 244                                      PRTL_THREAD_START_ROUTINE start, void *param,
 245                                      HANDLE *handle_ptr, CLIENT_ID *id )
 246 {
 247     struct ntdll_thread_data *thread_data = NULL;
 248     struct startup_info *info = NULL;
 249     void *addr;
 250     HANDLE handle = 0;
 251     TEB *teb;
 252     DWORD tid = 0;
 253     int request_pipe[2];
 254     NTSTATUS status;
 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 = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 311     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 312
 313     info->pthread_info.stack_base = NULL;
 314     info->pthread_info.stack_size = stack_reserve;
 315     info->pthread_info.entry      = start_thread;
 316     info->entry_point             = start;
 317     info->entry_arg               = param;
 318
 319     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 320     {
 321         status = STATUS_NO_MEMORY;
 322         goto error;
 323     }
 324
 325     if (id) id->UniqueThread = (HANDLE)tid;
 326     if (handle_ptr) *handle_ptr = handle;
 327     else NtClose( handle );
 328
 329     return STATUS_SUCCESS;
 330
 331 error:
 332     if (thread_data) wine_ldt_free_fs( thread_data->teb_sel );
 333     if (addr)
 334     {
 335         SIZE_T size = 0;
 336         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 337     }
 338     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 339     if (handle) NtClose( handle );
 340     close( request_pipe[1] );
 341     return status;
 342 }
 343
 344
 345 /***********************************************************************
 346  *           RtlExitUserThread  (NTDLL.@)
 347  */
 348 void WINAPI RtlExitUserThread( ULONG status )
 349 {
 350     LdrShutdownThread();
 351     server_exit_thread( status );
 352 }
 353
 354
 355 /***********************************************************************
 356  *              NtOpenThread   (NTDLL.@)
 357  *              ZwOpenThread   (NTDLL.@)
 358  */
 359 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 360                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 361 {
 362     NTSTATUS ret;
 363
 364     SERVER_START_REQ( open_thread )
 365     {
 366         req->tid        = (thread_id_t)id->UniqueThread;
 367         req->access     = access;
 368         req->attributes = attr ? attr->Attributes : 0;
 369         ret = wine_server_call( req );
 370         *handle = reply->handle;
 371     }
 372     SERVER_END_REQ;
 373     return ret;
 374 }
 375
 376
 377 /******************************************************************************
 378  *              NtSuspendThread   (NTDLL.@)
 379  *              ZwSuspendThread   (NTDLL.@)
 380  */
 381 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 382 {
 383     NTSTATUS ret;
 384
 385     SERVER_START_REQ( suspend_thread )
 386     {
 387         req->handle = handle;
 388         if (!(ret = wine_server_call( req ))) *count = reply->count;
 389     }
 390     SERVER_END_REQ;
 391     return ret;
 392 }
 393
 394
 395 /******************************************************************************
 396  *              NtResumeThread   (NTDLL.@)
 397  *              ZwResumeThread   (NTDLL.@)
 398  */
 399 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 400 {
 401     NTSTATUS ret;
 402
 403     SERVER_START_REQ( resume_thread )
 404     {
 405         req->handle = handle;
 406         if (!(ret = wine_server_call( req ))) *count = reply->count;
 407     }
 408     SERVER_END_REQ;
 409     return ret;
 410 }
 411
 412
 413 /******************************************************************************
 414  *              NtAlertResumeThread   (NTDLL.@)
 415  *              ZwAlertResumeThread   (NTDLL.@)
 416  */
 417 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 418 {
 419     FIXME( "stub: should alert thread %p\n", handle );
 420     return NtResumeThread( handle, count );
 421 }
 422
 423
 424 /******************************************************************************
 425  *              NtAlertThread   (NTDLL.@)
 426  *              ZwAlertThread   (NTDLL.@)
 427  */
 428 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 429 {
 430     FIXME( "stub: %p\n", handle );
 431     return STATUS_NOT_IMPLEMENTED;
 432 }
 433
 434
 435 /******************************************************************************
 436  *              NtTerminateThread  (NTDLL.@)
 437  *              ZwTerminateThread  (NTDLL.@)
 438  */
 439 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 440 {
 441     NTSTATUS ret;
 442     BOOL self, last;
 443
 444     SERVER_START_REQ( terminate_thread )
 445     {
 446         req->handle    = handle;
 447         req->exit_code = exit_code;
 448         ret = wine_server_call( req );
 449         self = !ret && reply->self;
 450         last = reply->last;
 451     }
 452     SERVER_END_REQ;
 453
 454     if (self)
 455     {
 456         if (last) exit( exit_code );
 457         else server_abort_thread( exit_code );
 458     }
 459     return ret;
 460 }
 461
 462
 463 /******************************************************************************
 464  *              NtQueueApcThread  (NTDLL.@)
 465  */
 466 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 467                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 468 {
 469     NTSTATUS ret;
 470     SERVER_START_REQ( queue_apc )
 471     {
 472         req->handle = handle;
 473         req->user   = 1;
 474         req->func   = func;
 475         req->arg1   = (void *)arg1;
 476         req->arg2   = (void *)arg2;
 477         req->arg3   = (void *)arg3;
 478         ret = wine_server_call( req );
 479     }
 480     SERVER_END_REQ;
 481     return ret;
 482 }
 483
 484
 485 /***********************************************************************
 486  *              NtSetContextThread  (NTDLL.@)
 487  *              ZwSetContextThread  (NTDLL.@)
 488  */
 489 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 490 {
 491     NTSTATUS ret;
 492     DWORD dummy, i;
 493
 494     SERVER_START_REQ( set_thread_context )
 495     {
 496         req->handle  = handle;
 497         req->flags   = context->ContextFlags;
 498         req->suspend = 0;
 499         wine_server_add_data( req, context, sizeof(*context) );
 500         ret = wine_server_call( req );
 501     }
 502     SERVER_END_REQ;
 503
 504     if (ret == STATUS_PENDING)
 505     {
 506         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 507         {
 508             for (i = 0; i < 100; i++)
 509             {
 510                 SERVER_START_REQ( set_thread_context )
 511                 {
 512                     req->handle  = handle;
 513                     req->flags   = context->ContextFlags;
 514                     req->suspend = 0;
 515                     wine_server_add_data( req, context, sizeof(*context) );
 516                     ret = wine_server_call( req );
 517                 }
 518                 SERVER_END_REQ;
 519                 if (ret != STATUS_PENDING) break;
 520                 NtYieldExecution();
 521             }
 522             NtResumeThread( handle, &dummy );
 523         }
 524     }
 525
 526     if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 527     return ret;
 528 }
 529
 530
 531 /* copy a context structure according to the flags */
 532 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 533 {
 534 #ifdef __i386__
 535     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 536     if (flags & CONTEXT_INTEGER)
 537     {
 538         to->Eax = from->Eax;
 539         to->Ebx = from->Ebx;
 540         to->Ecx = from->Ecx;
 541         to->Edx = from->Edx;
 542         to->Esi = from->Esi;
 543         to->Edi = from->Edi;
 544     }
 545     if (flags & CONTEXT_CONTROL)
 546     {
 547         to->Ebp    = from->Ebp;
 548         to->Esp    = from->Esp;
 549         to->Eip    = from->Eip;
 550         to->SegCs  = from->SegCs;
 551         to->SegSs  = from->SegSs;
 552         to->EFlags = from->EFlags;
 553     }
 554     if (flags & CONTEXT_SEGMENTS)
 555     {
 556         to->SegDs = from->SegDs;
 557         to->SegEs = from->SegEs;
 558         to->SegFs = from->SegFs;
 559         to->SegGs = from->SegGs;
 560     }
 561     if (flags & CONTEXT_DEBUG_REGISTERS)
 562     {
 563         to->Dr0 = from->Dr0;
 564         to->Dr1 = from->Dr1;
 565         to->Dr2 = from->Dr2;
 566         to->Dr3 = from->Dr3;
 567         to->Dr6 = from->Dr6;
 568         to->Dr7 = from->Dr7;
 569     }
 570     if (flags & CONTEXT_FLOATING_POINT)
 571     {
 572         to->FloatSave = from->FloatSave;
 573     }
 574 #elif defined(__x86_64__)
 575     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 576     if (flags & CONTEXT_CONTROL)
 577     {
 578         to->Rbp    = from->Rbp;
 579         to->Rip    = from->Rip;
 580         to->Rsp    = from->Rsp;
 581         to->SegCs  = from->SegCs;
 582         to->SegSs  = from->SegSs;
 583         to->EFlags = from->EFlags;
 584         to->MxCsr  = from->MxCsr;
 585     }
 586     if (flags & CONTEXT_INTEGER)
 587     {
 588         to->Rax = from->Rax;
 589         to->Rcx = from->Rcx;
 590         to->Rdx = from->Rdx;
 591         to->Rbx = from->Rbx;
 592         to->Rsi = from->Rsi;
 593         to->Rdi = from->Rdi;
 594         to->R8  = from->R8;
 595         to->R9  = from->R9;
 596         to->R10 = from->R10;
 597         to->R11 = from->R11;
 598         to->R12 = from->R12;
 599         to->R13 = from->R13;
 600         to->R14 = from->R14;
 601         to->R15 = from->R15;
 602     }
 603     if (flags & CONTEXT_SEGMENTS)
 604     {
 605         to->SegDs = from->SegDs;
 606         to->SegEs = from->SegEs;
 607         to->SegFs = from->SegFs;
 608         to->SegGs = from->SegGs;
 609     }
 610     if (flags & CONTEXT_FLOATING_POINT)
 611     {
 612         to->u.FltSave = from->u.FltSave;
 613     }
 614     if (flags & CONTEXT_DEBUG_REGISTERS)
 615     {
 616         to->Dr0 = from->Dr0;
 617         to->Dr1 = from->Dr1;
 618         to->Dr2 = from->Dr2;
 619         to->Dr3 = from->Dr3;
 620         to->Dr6 = from->Dr6;
 621         to->Dr7 = from->Dr7;
 622     }
 623 #elif defined(__sparc__)
 624     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 625     if (flags & CONTEXT_CONTROL)
 626     {
 627         to->psr = from->psr;
 628         to->pc  = from->pc;
 629         to->npc = from->npc;
 630         to->y   = from->y;
 631         to->wim = from->wim;
 632         to->tbr = from->tbr;
 633     }
 634     if (flags & CONTEXT_INTEGER)
 635     {
 636         to->g0 = from->g0;
 637         to->g1 = from->g1;
 638         to->g2 = from->g2;
 639         to->g3 = from->g3;
 640         to->g4 = from->g4;
 641         to->g5 = from->g5;
 642         to->g6 = from->g6;
 643         to->g7 = from->g7;
 644         to->o0 = from->o0;
 645         to->o1 = from->o1;
 646         to->o2 = from->o2;
 647         to->o3 = from->o3;
 648         to->o4 = from->o4;
 649         to->o5 = from->o5;
 650         to->o6 = from->o6;
 651         to->o7 = from->o7;
 652         to->l0 = from->l0;
 653         to->l1 = from->l1;
 654         to->l2 = from->l2;
 655         to->l3 = from->l3;
 656         to->l4 = from->l4;
 657         to->l5 = from->l5;
 658         to->l6 = from->l6;
 659         to->l7 = from->l7;
 660         to->i0 = from->i0;
 661         to->i1 = from->i1;
 662         to->i2 = from->i2;
 663         to->i3 = from->i3;
 664         to->i4 = from->i4;
 665         to->i5 = from->i5;
 666         to->i6 = from->i6;
 667         to->i7 = from->i7;
 668     }
 669     if (flags & CONTEXT_FLOATING_POINT)
 670     {
 671         /* FIXME */
 672     }
 673 #elif defined(__powerpc__)
 674     /* Has no CPU id */
 675     if (flags & CONTEXT_CONTROL)
 676     {
 677         to->Msr = from->Msr;
 678         to->Ctr = from->Ctr;
 679         to->Iar = from->Iar;
 680     }
 681     if (flags & CONTEXT_INTEGER)
 682     {
 683         to->Gpr0  = from->Gpr0;
 684         to->Gpr1  = from->Gpr1;
 685         to->Gpr2  = from->Gpr2;
 686         to->Gpr3  = from->Gpr3;
 687         to->Gpr4  = from->Gpr4;
 688         to->Gpr5  = from->Gpr5;
 689         to->Gpr6  = from->Gpr6;
 690         to->Gpr7  = from->Gpr7;
 691         to->Gpr8  = from->Gpr8;
 692         to->Gpr9  = from->Gpr9;
 693         to->Gpr10 = from->Gpr10;
 694         to->Gpr11 = from->Gpr11;
 695         to->Gpr12 = from->Gpr12;
 696         to->Gpr13 = from->Gpr13;
 697         to->Gpr14 = from->Gpr14;
 698         to->Gpr15 = from->Gpr15;
 699         to->Gpr16 = from->Gpr16;
 700         to->Gpr17 = from->Gpr17;
 701         to->Gpr18 = from->Gpr18;
 702         to->Gpr19 = from->Gpr19;
 703         to->Gpr20 = from->Gpr20;
 704         to->Gpr21 = from->Gpr21;
 705         to->Gpr22 = from->Gpr22;
 706         to->Gpr23 = from->Gpr23;
 707         to->Gpr24 = from->Gpr24;
 708         to->Gpr25 = from->Gpr25;
 709         to->Gpr26 = from->Gpr26;
 710         to->Gpr27 = from->Gpr27;
 711         to->Gpr28 = from->Gpr28;
 712         to->Gpr29 = from->Gpr29;
 713         to->Gpr30 = from->Gpr30;
 714         to->Gpr31 = from->Gpr31;
 715         to->Xer   = from->Xer;
 716         to->Cr    = from->Cr;
 717     }
 718     if (flags & CONTEXT_FLOATING_POINT)
 719     {
 720         to->Fpr0  = from->Fpr0;
 721         to->Fpr1  = from->Fpr1;
 722         to->Fpr2  = from->Fpr2;
 723         to->Fpr3  = from->Fpr3;
 724         to->Fpr4  = from->Fpr4;
 725         to->Fpr5  = from->Fpr5;
 726         to->Fpr6  = from->Fpr6;
 727         to->Fpr7  = from->Fpr7;
 728         to->Fpr8  = from->Fpr8;
 729         to->Fpr9  = from->Fpr9;
 730         to->Fpr10 = from->Fpr10;
 731         to->Fpr11 = from->Fpr11;
 732         to->Fpr12 = from->Fpr12;
 733         to->Fpr13 = from->Fpr13;
 734         to->Fpr14 = from->Fpr14;
 735         to->Fpr15 = from->Fpr15;
 736         to->Fpr16 = from->Fpr16;
 737         to->Fpr17 = from->Fpr17;
 738         to->Fpr18 = from->Fpr18;
 739         to->Fpr19 = from->Fpr19;
 740         to->Fpr20 = from->Fpr20;
 741         to->Fpr21 = from->Fpr21;
 742         to->Fpr22 = from->Fpr22;
 743         to->Fpr23 = from->Fpr23;
 744         to->Fpr24 = from->Fpr24;
 745         to->Fpr25 = from->Fpr25;
 746         to->Fpr26 = from->Fpr26;
 747         to->Fpr27 = from->Fpr27;
 748         to->Fpr28 = from->Fpr28;
 749         to->Fpr29 = from->Fpr29;
 750         to->Fpr30 = from->Fpr30;
 751         to->Fpr31 = from->Fpr31;
 752         to->Fpscr = from->Fpscr;
 753     }
 754 #else
 755 #error You must implement context copying for your CPU
 756 #endif
 757 }
 758
 759
 760 /***********************************************************************
 761  *              NtGetContextThread  (NTDLL.@)
 762  *              ZwGetContextThread  (NTDLL.@)
 763  */
 764 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 765 {
 766     NTSTATUS ret;
 767     CONTEXT ctx;
 768     DWORD dummy, i;
 769
 770     SERVER_START_REQ( get_thread_context )
 771     {
 772         req->handle  = handle;
 773         req->flags   = context->ContextFlags;
 774         req->suspend = 0;
 775         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 776         ret = wine_server_call( req );
 777     }
 778     SERVER_END_REQ;
 779
 780     if (ret == STATUS_PENDING)
 781     {
 782         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 783         {
 784             for (i = 0; i < 100; i++)
 785             {
 786                 SERVER_START_REQ( get_thread_context )
 787                 {
 788                     req->handle  = handle;
 789                     req->flags   = context->ContextFlags;
 790                     req->suspend = 0;
 791                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 792                     ret = wine_server_call( req );
 793                 }
 794                 SERVER_END_REQ;
 795                 if (ret != STATUS_PENDING) break;
 796                 NtYieldExecution();
 797             }
 798             NtResumeThread( handle, &dummy );
 799         }
 800     }
 801
 802     if (ret == STATUS_SUCCESS) copy_context( context, &ctx, context->ContextFlags );
 803     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 804     return ret;
 805 }
 806
 807
 808 /******************************************************************************
 809  *              NtQueryInformationThread  (NTDLL.@)
 810  *              ZwQueryInformationThread  (NTDLL.@)
 811  */
 812 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 813                                           void *data, ULONG length, ULONG *ret_len )
 814 {
 815     NTSTATUS status;
 816
 817     switch(class)
 818     {
 819     case ThreadBasicInformation:
 820         {
 821             THREAD_BASIC_INFORMATION info;
 822
 823             SERVER_START_REQ( get_thread_info )
 824             {
 825                 req->handle = handle;
 826                 req->tid_in = 0;
 827                 if (!(status = wine_server_call( req )))
 828                 {
 829                     info.ExitStatus             = reply->exit_code;
 830                     info.TebBaseAddress         = reply->teb;
 831                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 832                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 833                     info.AffinityMask           = reply->affinity;
 834                     info.Priority               = reply->priority;
 835                     info.BasePriority           = reply->priority;  /* FIXME */
 836                 }
 837             }
 838             SERVER_END_REQ;
 839             if (status == STATUS_SUCCESS)
 840             {
 841                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 842                 if (ret_len) *ret_len = min( length, sizeof(info) );
 843             }
 844         }
 845         return status;
 846     case ThreadTimes:
 847         {
 848             KERNEL_USER_TIMES   kusrt;
 849             /* We need to do a server call to get the creation time or exit time */
 850             /* This works on any thread */
 851             SERVER_START_REQ( get_thread_info )
 852             {
 853                 req->handle = handle;
 854                 req->tid_in = 0;
 855                 status = wine_server_call( req );
 856                 if (status == STATUS_SUCCESS)
 857                 {
 858                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 859                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 860                 }
 861             }
 862             SERVER_END_REQ;
 863             if (status == STATUS_SUCCESS)
 864             {
 865                 /* We call times(2) for kernel time or user time */
 866                 /* We can only (portably) do this for the current thread */
 867                 if (handle == GetCurrentThread())
 868                 {
 869                     struct tms time_buf;
 870                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 871
 872                     times(&time_buf);
 873                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 874                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 875                 }
 876                 else
 877                 {
 878                     kusrt.KernelTime.QuadPart = 0;
 879                     kusrt.UserTime.QuadPart = 0;
 880                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 881                 }
 882                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 883                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 884             }
 885         }
 886         return status;
 887     case ThreadPriority:
 888     case ThreadBasePriority:
 889     case ThreadAffinityMask:
 890     case ThreadImpersonationToken:
 891     case ThreadDescriptorTableEntry:
 892     case ThreadEnableAlignmentFaultFixup:
 893     case ThreadEventPair_Reusable:
 894     case ThreadQuerySetWin32StartAddress:
 895     case ThreadZeroTlsCell:
 896     case ThreadPerformanceCount:
 897     case ThreadAmILastThread:
 898     case ThreadIdealProcessor:
 899     case ThreadPriorityBoost:
 900     case ThreadSetTlsArrayAddress:
 901     case ThreadIsIoPending:
 902     default:
 903         FIXME( "info class %d not supported yet\n", class );
 904         return STATUS_NOT_IMPLEMENTED;
 905     }
 906 }
 907
 908
 909 /******************************************************************************
 910  *              NtSetInformationThread  (NTDLL.@)
 911  *              ZwSetInformationThread  (NTDLL.@)
 912  */
 913 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 914                                         LPCVOID data, ULONG length )
 915 {
 916     NTSTATUS status;
 917     switch(class)
 918     {
 919     case ThreadZeroTlsCell:
 920         if (handle == GetCurrentThread())
 921         {
 922             LIST_ENTRY *entry;
 923             DWORD index;
 924
 925             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 926             index = *(const DWORD *)data;
 927             if (index < TLS_MINIMUM_AVAILABLE)
 928             {
 929                 RtlAcquirePebLock();
 930                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 931                 {
 932                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 933                     teb->TlsSlots[index] = 0;
 934                 }
 935                 RtlReleasePebLock();
 936             }
 937             else
 938             {
 939                 index -= TLS_MINIMUM_AVAILABLE;
 940                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 941                     return STATUS_INVALID_PARAMETER;
 942                 RtlAcquirePebLock();
 943                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 944                 {
 945                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 946                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 947                 }
 948                 RtlReleasePebLock();
 949             }
 950             return STATUS_SUCCESS;
 951         }
 952         FIXME( "ZeroTlsCell not supported on other threads\n" );
 953         return STATUS_NOT_IMPLEMENTED;
 954
 955     case ThreadImpersonationToken:
 956         {
 957             const HANDLE *phToken = data;
 958             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
 959             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
 960             SERVER_START_REQ( set_thread_info )
 961             {
 962                 req->handle   = handle;
 963                 req->token    = *phToken;
 964                 req->mask     = SET_THREAD_INFO_TOKEN;
 965                 status = wine_server_call( req );
 966             }
 967             SERVER_END_REQ;
 968         }
 969         return status;
 970     case ThreadBasePriority:
 971         {
 972             const DWORD *pprio = data;
 973             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 974             SERVER_START_REQ( set_thread_info )
 975             {
 976                 req->handle   = handle;
 977                 req->priority = *pprio;
 978                 req->mask     = SET_THREAD_INFO_PRIORITY;
 979                 status = wine_server_call( req );
 980             }
 981             SERVER_END_REQ;
 982         }
 983         return status;
 984     case ThreadBasicInformation:
 985     case ThreadTimes:
 986     case ThreadPriority:
 987     case ThreadAffinityMask:
 988     case ThreadDescriptorTableEntry:
 989     case ThreadEnableAlignmentFaultFixup:
 990     case ThreadEventPair_Reusable:
 991     case ThreadQuerySetWin32StartAddress:
 992     case ThreadPerformanceCount:
 993     case ThreadAmILastThread:
 994     case ThreadIdealProcessor:
 995     case ThreadPriorityBoost:
 996     case ThreadSetTlsArrayAddress:
 997     case ThreadIsIoPending:
 998     default:
 999         FIXME( "info class %d not supported yet\n", class );
1000         return STATUS_NOT_IMPLEMENTED;
1001     }
1002 }
1003
1004
1005 /**********************************************************************
1006  *           NtCurrentTeb   (NTDLL.@)
1007  */
1008 #if defined(__i386__) && defined(__GNUC__)
1009
1010 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1011
1012 #elif defined(__i386__) && defined(_MSC_VER)
1013
1014 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1015
1016 #else
1017
1018 /**********************************************************************/
1019
1020 TEB * WINAPI NtCurrentTeb(void)
1021 {
1022     return pthread_functions.get_current_teb();
1023 }
1024
1025 #endif  /* __i386__ */