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   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     struct ntdll_thread_regs *thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
  71
  72     teb->Tib.ExceptionList = (void *)~0UL;
  73     teb->Tib.StackBase     = (void *)~0UL;
  74     teb->Tib.Self          = &teb->Tib;
  75     teb->Peb               = &peb;
  76     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
  77     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  78
  79     if (!(thread_regs->fs = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
  80     thread_data->request_fd = -1;
  81     thread_data->reply_fd   = -1;
  82     thread_data->wait_fd[0] = -1;
  83     thread_data->wait_fd[1] = -1;
  84
  85     return STATUS_SUCCESS;
  86 }
  87
  88
  89 /***********************************************************************
  90  *           free_teb
  91  */
  92 static inline void free_teb( TEB *teb )
  93 {
  94     SIZE_T size = 0;
  95     void *addr = teb;
  96     struct ntdll_thread_regs *thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
  97
  98     NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
  99     wine_ldt_free_fs( thread_regs->fs );
 100     munmap( teb, sigstack_total_size );
 101 }
 102
 103
 104 /***********************************************************************
 105  *           thread_init
 106  *
 107  * Setup the initial thread.
 108  *
 109  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 110  */
 111 void thread_init(void)
 112 {
 113     TEB *teb;
 114     void *addr;
 115     SIZE_T info_size;
 116     struct ntdll_thread_data *thread_data;
 117     struct ntdll_thread_regs *thread_regs;
 118     struct wine_pthread_thread_info thread_info;
 119     static struct debug_info debug_info;  /* debug info for initial thread */
 120
 121     peb.NumberOfProcessors = 1;
 122     peb.ProcessParameters  = &params;
 123     peb.TlsBitmap          = &tls_bitmap;
 124     peb.TlsExpansionBitmap = &tls_expansion_bitmap;
 125     peb.LdrData            = &ldr;
 126     params.CurrentDirectory.DosPath.Buffer = current_dir;
 127     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 128     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 129     RtlInitializeBitMap( &tls_bitmap, peb.TlsBitmapBits, sizeof(peb.TlsBitmapBits) * 8 );
 130     RtlInitializeBitMap( &tls_expansion_bitmap, peb.TlsExpansionBitmapBits,
 131                          sizeof(peb.TlsExpansionBitmapBits) * 8 );
 132     InitializeListHead( &ldr.InLoadOrderModuleList );
 133     InitializeListHead( &ldr.InMemoryOrderModuleList );
 134     InitializeListHead( &ldr.InInitializationOrderModuleList );
 135     InitializeListHead( &tls_links );
 136
 137     sigstack_total_size = get_signal_stack_total_size();
 138     thread_info.teb_size = sigstack_total_size;
 139     VIRTUAL_alloc_teb( &addr, thread_info.teb_size, TRUE );
 140     teb = addr;
 141     init_teb( teb );
 142     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 143     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 144     thread_data->debug_info = &debug_info;
 145     InsertHeadList( &tls_links, &teb->TlsLinks );
 146
 147     thread_info.stack_base = NULL;
 148     thread_info.stack_size = 0;
 149     thread_info.teb_base   = teb;
 150     thread_info.teb_sel    = thread_regs->fs;
 151     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 152     pthread_functions.init_current_teb( &thread_info );
 153     pthread_functions.init_thread( &thread_info );
 154
 155     debug_info.str_pos = debug_info.strings;
 156     debug_info.out_pos = debug_info.output;
 157     debug_init();
 158
 159     /* setup the server connection */
 160     server_init_process();
 161     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 162
 163     /* create the process heap */
 164     if (!(peb.ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 165     {
 166         MESSAGE( "wine: failed to create the process heap\n" );
 167         exit(1);
 168     }
 169
 170     /* allocate user parameters */
 171     if (info_size)
 172     {
 173         RTL_USER_PROCESS_PARAMETERS *params = NULL;
 174
 175         if (NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 176                                      MEM_COMMIT, PAGE_READWRITE ) == STATUS_SUCCESS)
 177         {
 178             params->AllocationSize = info_size;
 179             NtCurrentTeb()->Peb->ProcessParameters = params;
 180         }
 181     }
 182     else
 183     {
 184         /* This is wine specific: we have no parent (we're started from unix)
 185          * so, create a simple console with bare handles to unix stdio
 186          */
 187         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 188         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 189         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 190     }
 191 }
 192
 193
 194 /***********************************************************************
 195  *           start_thread
 196  *
 197  * Startup routine for a newly created thread.
 198  */
 199 static void start_thread( struct wine_pthread_thread_info *info )
 200 {
 201     TEB *teb = info->teb_base;
 202     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 203     struct startup_info *startup_info = (struct startup_info *)info;
 204     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 205     void *arg = startup_info->entry_arg;
 206     struct debug_info debug_info;
 207     SIZE_T size, page_size = getpagesize();
 208
 209     debug_info.str_pos = debug_info.strings;
 210     debug_info.out_pos = debug_info.output;
 211     thread_data->debug_info = &debug_info;
 212
 213     pthread_functions.init_current_teb( info );
 214     SIGNAL_Init();
 215     server_init_thread( info->pid, info->tid, func );
 216     pthread_functions.init_thread( info );
 217
 218     /* allocate a memory view for the stack */
 219     size = info->stack_size;
 220     teb->DeallocationStack = info->stack_base;
 221     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 222                              &size, MEM_SYSTEM, PAGE_READWRITE );
 223     /* limit is lower than base since the stack grows down */
 224     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 225     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 226
 227     /* setup the guard page */
 228     size = page_size;
 229     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 230     RtlFreeHeap( GetProcessHeap(), 0, info );
 231
 232     RtlAcquirePebLock();
 233     InsertHeadList( &tls_links, &teb->TlsLinks );
 234     RtlReleasePebLock();
 235
 236     func( arg );
 237 }
 238
 239
 240 /***********************************************************************
 241  *              RtlCreateUserThread   (NTDLL.@)
 242  */
 243 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 244                                      BOOLEAN suspended, PVOID stack_addr,
 245                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 246                                      PRTL_THREAD_START_ROUTINE start, void *param,
 247                                      HANDLE *handle_ptr, CLIENT_ID *id )
 248 {
 249     struct ntdll_thread_data *thread_data;
 250     struct ntdll_thread_regs *thread_regs = NULL;
 251     struct startup_info *info = NULL;
 252     void *addr;
 253     HANDLE handle = 0;
 254     TEB *teb;
 255     DWORD tid = 0;
 256     int request_pipe[2];
 257     NTSTATUS status;
 258     SIZE_T page_size = getpagesize();
 259
 260     if( ! is_current_process( process ) )
 261     {
 262         ERR("Unsupported on other process\n");
 263         return STATUS_ACCESS_DENIED;
 264     }
 265
 266     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 267     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 268     wine_server_send_fd( request_pipe[0] );
 269
 270     SERVER_START_REQ( new_thread )
 271     {
 272         req->access     = THREAD_ALL_ACCESS;
 273         req->attributes = 0;  /* FIXME */
 274         req->suspend    = suspended;
 275         req->request_fd = request_pipe[0];
 276         if (!(status = wine_server_call( req )))
 277         {
 278             handle = reply->handle;
 279             tid = reply->tid;
 280         }
 281         close( request_pipe[0] );
 282     }
 283     SERVER_END_REQ;
 284
 285     if (status) goto error;
 286
 287     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 288     {
 289         status = STATUS_NO_MEMORY;
 290         goto error;
 291     }
 292
 293     info->pthread_info.teb_size = sigstack_total_size;
 294     if ((status = VIRTUAL_alloc_teb( &addr, info->pthread_info.teb_size, FALSE ))) goto error;
 295     teb = addr;
 296     if ((status = init_teb( teb ))) goto error;
 297
 298     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 299     teb->ClientId.UniqueThread  = (HANDLE)tid;
 300
 301     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 302     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 303     thread_data->request_fd  = request_pipe[1];
 304
 305     info->pthread_info.teb_base = teb;
 306     info->pthread_info.teb_sel  = thread_regs->fs;
 307
 308     /* inherit debug registers from parent thread */
 309     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 310     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 311     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 312     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 313     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 314     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 315
 316     if (!stack_reserve || !stack_commit)
 317     {
 318         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 319         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 320         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 321     }
 322     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 323     stack_reserve += page_size;  /* for the guard page */
 324     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 325     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 326
 327     info->pthread_info.stack_base = NULL;
 328     info->pthread_info.stack_size = stack_reserve;
 329     info->pthread_info.entry      = start_thread;
 330     info->entry_point             = start;
 331     info->entry_arg               = param;
 332
 333     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 334     {
 335         status = STATUS_NO_MEMORY;
 336         goto error;
 337     }
 338
 339     if (id) id->UniqueThread = (HANDLE)tid;
 340     if (handle_ptr) *handle_ptr = handle;
 341     else NtClose( handle );
 342
 343     return STATUS_SUCCESS;
 344
 345 error:
 346     if (thread_regs) wine_ldt_free_fs( thread_regs->fs );
 347     if (addr)
 348     {
 349         SIZE_T size = 0;
 350         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 351     }
 352     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 353     if (handle) NtClose( handle );
 354     close( request_pipe[1] );
 355     return status;
 356 }
 357
 358
 359 /***********************************************************************
 360  *           RtlExitUserThread  (NTDLL.@)
 361  */
 362 void WINAPI RtlExitUserThread( ULONG status )
 363 {
 364     LdrShutdownThread();
 365     server_exit_thread( status );
 366 }
 367
 368
 369 /***********************************************************************
 370  *              NtOpenThread   (NTDLL.@)
 371  *              ZwOpenThread   (NTDLL.@)
 372  */
 373 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 374                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 375 {
 376     NTSTATUS ret;
 377
 378     SERVER_START_REQ( open_thread )
 379     {
 380         req->tid        = (thread_id_t)id->UniqueThread;
 381         req->access     = access;
 382         req->attributes = attr ? attr->Attributes : 0;
 383         ret = wine_server_call( req );
 384         *handle = reply->handle;
 385     }
 386     SERVER_END_REQ;
 387     return ret;
 388 }
 389
 390
 391 /******************************************************************************
 392  *              NtSuspendThread   (NTDLL.@)
 393  *              ZwSuspendThread   (NTDLL.@)
 394  */
 395 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 396 {
 397     NTSTATUS ret;
 398
 399     SERVER_START_REQ( suspend_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  *              NtResumeThread   (NTDLL.@)
 411  *              ZwResumeThread   (NTDLL.@)
 412  */
 413 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 414 {
 415     NTSTATUS ret;
 416
 417     SERVER_START_REQ( resume_thread )
 418     {
 419         req->handle = handle;
 420         if (!(ret = wine_server_call( req ))) *count = reply->count;
 421     }
 422     SERVER_END_REQ;
 423     return ret;
 424 }
 425
 426
 427 /******************************************************************************
 428  *              NtAlertResumeThread   (NTDLL.@)
 429  *              ZwAlertResumeThread   (NTDLL.@)
 430  */
 431 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 432 {
 433     FIXME( "stub: should alert thread %p\n", handle );
 434     return NtResumeThread( handle, count );
 435 }
 436
 437
 438 /******************************************************************************
 439  *              NtAlertThread   (NTDLL.@)
 440  *              ZwAlertThread   (NTDLL.@)
 441  */
 442 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 443 {
 444     FIXME( "stub: %p\n", handle );
 445     return STATUS_NOT_IMPLEMENTED;
 446 }
 447
 448
 449 /******************************************************************************
 450  *              NtTerminateThread  (NTDLL.@)
 451  *              ZwTerminateThread  (NTDLL.@)
 452  */
 453 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 454 {
 455     NTSTATUS ret;
 456     BOOL self, last;
 457
 458     SERVER_START_REQ( terminate_thread )
 459     {
 460         req->handle    = handle;
 461         req->exit_code = exit_code;
 462         ret = wine_server_call( req );
 463         self = !ret && reply->self;
 464         last = reply->last;
 465     }
 466     SERVER_END_REQ;
 467
 468     if (self)
 469     {
 470         if (last) exit( exit_code );
 471         else server_abort_thread( exit_code );
 472     }
 473     return ret;
 474 }
 475
 476
 477 /******************************************************************************
 478  *              NtQueueApcThread  (NTDLL.@)
 479  */
 480 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 481                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 482 {
 483     NTSTATUS ret;
 484     SERVER_START_REQ( queue_apc )
 485     {
 486         req->handle = handle;
 487         req->user   = 1;
 488         req->func   = func;
 489         req->arg1   = (void *)arg1;
 490         req->arg2   = (void *)arg2;
 491         req->arg3   = (void *)arg3;
 492         ret = wine_server_call( req );
 493     }
 494     SERVER_END_REQ;
 495     return ret;
 496 }
 497
 498
 499 /***********************************************************************
 500  *              NtSetContextThread  (NTDLL.@)
 501  *              ZwSetContextThread  (NTDLL.@)
 502  */
 503 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 504 {
 505     NTSTATUS ret;
 506     DWORD dummy, i;
 507     BOOL self = FALSE;
 508
 509 #ifdef __i386__
 510     /* on i386 debug registers always require a server call */
 511     self = (handle == GetCurrentThread());
 512     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 513     {
 514         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 515         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 516                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 517                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 518     }
 519 #endif
 520
 521     if (!self)
 522     {
 523         SERVER_START_REQ( set_thread_context )
 524         {
 525             req->handle  = handle;
 526             req->flags   = context->ContextFlags;
 527             req->suspend = 0;
 528             wine_server_add_data( req, context, sizeof(*context) );
 529             ret = wine_server_call( req );
 530             self = reply->self;
 531         }
 532         SERVER_END_REQ;
 533
 534         if (ret == STATUS_PENDING)
 535         {
 536             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 537             {
 538                 for (i = 0; i < 100; i++)
 539                 {
 540                     SERVER_START_REQ( set_thread_context )
 541                     {
 542                         req->handle  = handle;
 543                         req->flags   = context->ContextFlags;
 544                         req->suspend = 0;
 545                         wine_server_add_data( req, context, sizeof(*context) );
 546                         ret = wine_server_call( req );
 547                     }
 548                     SERVER_END_REQ;
 549                     if (ret != STATUS_PENDING) break;
 550                     NtYieldExecution();
 551                 }
 552                 NtResumeThread( handle, &dummy );
 553             }
 554             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 555         }
 556
 557         if (ret) return ret;
 558     }
 559
 560     if (self) set_cpu_context( context );
 561     return STATUS_SUCCESS;
 562 }
 563
 564
 565 /* copy a context structure according to the flags */
 566 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 567 {
 568 #ifdef __i386__
 569     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 570     if (flags & CONTEXT_INTEGER)
 571     {
 572         to->Eax = from->Eax;
 573         to->Ebx = from->Ebx;
 574         to->Ecx = from->Ecx;
 575         to->Edx = from->Edx;
 576         to->Esi = from->Esi;
 577         to->Edi = from->Edi;
 578     }
 579     if (flags & CONTEXT_CONTROL)
 580     {
 581         to->Ebp    = from->Ebp;
 582         to->Esp    = from->Esp;
 583         to->Eip    = from->Eip;
 584         to->SegCs  = from->SegCs;
 585         to->SegSs  = from->SegSs;
 586         to->EFlags = from->EFlags;
 587     }
 588     if (flags & CONTEXT_SEGMENTS)
 589     {
 590         to->SegDs = from->SegDs;
 591         to->SegEs = from->SegEs;
 592         to->SegFs = from->SegFs;
 593         to->SegGs = from->SegGs;
 594     }
 595     if (flags & CONTEXT_DEBUG_REGISTERS)
 596     {
 597         to->Dr0 = from->Dr0;
 598         to->Dr1 = from->Dr1;
 599         to->Dr2 = from->Dr2;
 600         to->Dr3 = from->Dr3;
 601         to->Dr6 = from->Dr6;
 602         to->Dr7 = from->Dr7;
 603     }
 604     if (flags & CONTEXT_FLOATING_POINT)
 605     {
 606         to->FloatSave = from->FloatSave;
 607     }
 608 #elif defined(__x86_64__)
 609     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 610     if (flags & CONTEXT_CONTROL)
 611     {
 612         to->Rbp    = from->Rbp;
 613         to->Rip    = from->Rip;
 614         to->Rsp    = from->Rsp;
 615         to->SegCs  = from->SegCs;
 616         to->SegSs  = from->SegSs;
 617         to->EFlags = from->EFlags;
 618         to->MxCsr  = from->MxCsr;
 619     }
 620     if (flags & CONTEXT_INTEGER)
 621     {
 622         to->Rax = from->Rax;
 623         to->Rcx = from->Rcx;
 624         to->Rdx = from->Rdx;
 625         to->Rbx = from->Rbx;
 626         to->Rsi = from->Rsi;
 627         to->Rdi = from->Rdi;
 628         to->R8  = from->R8;
 629         to->R9  = from->R9;
 630         to->R10 = from->R10;
 631         to->R11 = from->R11;
 632         to->R12 = from->R12;
 633         to->R13 = from->R13;
 634         to->R14 = from->R14;
 635         to->R15 = from->R15;
 636     }
 637     if (flags & CONTEXT_SEGMENTS)
 638     {
 639         to->SegDs = from->SegDs;
 640         to->SegEs = from->SegEs;
 641         to->SegFs = from->SegFs;
 642         to->SegGs = from->SegGs;
 643     }
 644     if (flags & CONTEXT_FLOATING_POINT)
 645     {
 646         to->u.FltSave = from->u.FltSave;
 647     }
 648     if (flags & CONTEXT_DEBUG_REGISTERS)
 649     {
 650         to->Dr0 = from->Dr0;
 651         to->Dr1 = from->Dr1;
 652         to->Dr2 = from->Dr2;
 653         to->Dr3 = from->Dr3;
 654         to->Dr6 = from->Dr6;
 655         to->Dr7 = from->Dr7;
 656     }
 657 #elif defined(__sparc__)
 658     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 659     if (flags & CONTEXT_CONTROL)
 660     {
 661         to->psr = from->psr;
 662         to->pc  = from->pc;
 663         to->npc = from->npc;
 664         to->y   = from->y;
 665         to->wim = from->wim;
 666         to->tbr = from->tbr;
 667     }
 668     if (flags & CONTEXT_INTEGER)
 669     {
 670         to->g0 = from->g0;
 671         to->g1 = from->g1;
 672         to->g2 = from->g2;
 673         to->g3 = from->g3;
 674         to->g4 = from->g4;
 675         to->g5 = from->g5;
 676         to->g6 = from->g6;
 677         to->g7 = from->g7;
 678         to->o0 = from->o0;
 679         to->o1 = from->o1;
 680         to->o2 = from->o2;
 681         to->o3 = from->o3;
 682         to->o4 = from->o4;
 683         to->o5 = from->o5;
 684         to->o6 = from->o6;
 685         to->o7 = from->o7;
 686         to->l0 = from->l0;
 687         to->l1 = from->l1;
 688         to->l2 = from->l2;
 689         to->l3 = from->l3;
 690         to->l4 = from->l4;
 691         to->l5 = from->l5;
 692         to->l6 = from->l6;
 693         to->l7 = from->l7;
 694         to->i0 = from->i0;
 695         to->i1 = from->i1;
 696         to->i2 = from->i2;
 697         to->i3 = from->i3;
 698         to->i4 = from->i4;
 699         to->i5 = from->i5;
 700         to->i6 = from->i6;
 701         to->i7 = from->i7;
 702     }
 703     if (flags & CONTEXT_FLOATING_POINT)
 704     {
 705         /* FIXME */
 706     }
 707 #elif defined(__powerpc__)
 708     /* Has no CPU id */
 709     if (flags & CONTEXT_CONTROL)
 710     {
 711         to->Msr = from->Msr;
 712         to->Ctr = from->Ctr;
 713         to->Iar = from->Iar;
 714     }
 715     if (flags & CONTEXT_INTEGER)
 716     {
 717         to->Gpr0  = from->Gpr0;
 718         to->Gpr1  = from->Gpr1;
 719         to->Gpr2  = from->Gpr2;
 720         to->Gpr3  = from->Gpr3;
 721         to->Gpr4  = from->Gpr4;
 722         to->Gpr5  = from->Gpr5;
 723         to->Gpr6  = from->Gpr6;
 724         to->Gpr7  = from->Gpr7;
 725         to->Gpr8  = from->Gpr8;
 726         to->Gpr9  = from->Gpr9;
 727         to->Gpr10 = from->Gpr10;
 728         to->Gpr11 = from->Gpr11;
 729         to->Gpr12 = from->Gpr12;
 730         to->Gpr13 = from->Gpr13;
 731         to->Gpr14 = from->Gpr14;
 732         to->Gpr15 = from->Gpr15;
 733         to->Gpr16 = from->Gpr16;
 734         to->Gpr17 = from->Gpr17;
 735         to->Gpr18 = from->Gpr18;
 736         to->Gpr19 = from->Gpr19;
 737         to->Gpr20 = from->Gpr20;
 738         to->Gpr21 = from->Gpr21;
 739         to->Gpr22 = from->Gpr22;
 740         to->Gpr23 = from->Gpr23;
 741         to->Gpr24 = from->Gpr24;
 742         to->Gpr25 = from->Gpr25;
 743         to->Gpr26 = from->Gpr26;
 744         to->Gpr27 = from->Gpr27;
 745         to->Gpr28 = from->Gpr28;
 746         to->Gpr29 = from->Gpr29;
 747         to->Gpr30 = from->Gpr30;
 748         to->Gpr31 = from->Gpr31;
 749         to->Xer   = from->Xer;
 750         to->Cr    = from->Cr;
 751     }
 752     if (flags & CONTEXT_FLOATING_POINT)
 753     {
 754         to->Fpr0  = from->Fpr0;
 755         to->Fpr1  = from->Fpr1;
 756         to->Fpr2  = from->Fpr2;
 757         to->Fpr3  = from->Fpr3;
 758         to->Fpr4  = from->Fpr4;
 759         to->Fpr5  = from->Fpr5;
 760         to->Fpr6  = from->Fpr6;
 761         to->Fpr7  = from->Fpr7;
 762         to->Fpr8  = from->Fpr8;
 763         to->Fpr9  = from->Fpr9;
 764         to->Fpr10 = from->Fpr10;
 765         to->Fpr11 = from->Fpr11;
 766         to->Fpr12 = from->Fpr12;
 767         to->Fpr13 = from->Fpr13;
 768         to->Fpr14 = from->Fpr14;
 769         to->Fpr15 = from->Fpr15;
 770         to->Fpr16 = from->Fpr16;
 771         to->Fpr17 = from->Fpr17;
 772         to->Fpr18 = from->Fpr18;
 773         to->Fpr19 = from->Fpr19;
 774         to->Fpr20 = from->Fpr20;
 775         to->Fpr21 = from->Fpr21;
 776         to->Fpr22 = from->Fpr22;
 777         to->Fpr23 = from->Fpr23;
 778         to->Fpr24 = from->Fpr24;
 779         to->Fpr25 = from->Fpr25;
 780         to->Fpr26 = from->Fpr26;
 781         to->Fpr27 = from->Fpr27;
 782         to->Fpr28 = from->Fpr28;
 783         to->Fpr29 = from->Fpr29;
 784         to->Fpr30 = from->Fpr30;
 785         to->Fpr31 = from->Fpr31;
 786         to->Fpscr = from->Fpscr;
 787     }
 788 #else
 789 #error You must implement context copying for your CPU
 790 #endif
 791 }
 792
 793
 794 /***********************************************************************
 795  *              NtGetContextThread  (NTDLL.@)
 796  *              ZwGetContextThread  (NTDLL.@)
 797  */
 798 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 799 {
 800     NTSTATUS ret;
 801     CONTEXT ctx;
 802     DWORD dummy, i;
 803     BOOL self = FALSE;
 804
 805     SERVER_START_REQ( get_thread_context )
 806     {
 807         req->handle  = handle;
 808         req->flags   = context->ContextFlags;
 809         req->suspend = 0;
 810         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 811         ret = wine_server_call( req );
 812         self = reply->self;
 813     }
 814     SERVER_END_REQ;
 815
 816     if (ret == STATUS_PENDING)
 817     {
 818         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 819         {
 820             for (i = 0; i < 100; i++)
 821             {
 822                 SERVER_START_REQ( get_thread_context )
 823                 {
 824                     req->handle  = handle;
 825                     req->flags   = context->ContextFlags;
 826                     req->suspend = 0;
 827                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 828                     ret = wine_server_call( req );
 829                 }
 830                 SERVER_END_REQ;
 831                 if (ret != STATUS_PENDING) break;
 832                 NtYieldExecution();
 833             }
 834             NtResumeThread( handle, &dummy );
 835         }
 836     }
 837
 838     if (ret == STATUS_SUCCESS)
 839     {
 840         copy_context( context, &ctx, context->ContextFlags );
 841 #ifdef __i386__
 842         /* update the cached version of the debug registers */
 843         if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 844         {
 845             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 846             regs->dr0 = context->Dr0;
 847             regs->dr1 = context->Dr1;
 848             regs->dr2 = context->Dr2;
 849             regs->dr3 = context->Dr3;
 850             regs->dr6 = context->Dr6;
 851             regs->dr7 = context->Dr7;
 852         }
 853 #endif
 854     }
 855     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 856     return ret;
 857 }
 858
 859
 860 /******************************************************************************
 861  *              NtQueryInformationThread  (NTDLL.@)
 862  *              ZwQueryInformationThread  (NTDLL.@)
 863  */
 864 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 865                                           void *data, ULONG length, ULONG *ret_len )
 866 {
 867     NTSTATUS status;
 868
 869     switch(class)
 870     {
 871     case ThreadBasicInformation:
 872         {
 873             THREAD_BASIC_INFORMATION info;
 874
 875             SERVER_START_REQ( get_thread_info )
 876             {
 877                 req->handle = handle;
 878                 req->tid_in = 0;
 879                 if (!(status = wine_server_call( req )))
 880                 {
 881                     info.ExitStatus             = reply->exit_code;
 882                     info.TebBaseAddress         = reply->teb;
 883                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 884                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 885                     info.AffinityMask           = reply->affinity;
 886                     info.Priority               = reply->priority;
 887                     info.BasePriority           = reply->priority;  /* FIXME */
 888                 }
 889             }
 890             SERVER_END_REQ;
 891             if (status == STATUS_SUCCESS)
 892             {
 893                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 894                 if (ret_len) *ret_len = min( length, sizeof(info) );
 895             }
 896         }
 897         return status;
 898     case ThreadTimes:
 899         {
 900             KERNEL_USER_TIMES   kusrt;
 901             /* We need to do a server call to get the creation time or exit time */
 902             /* This works on any thread */
 903             SERVER_START_REQ( get_thread_info )
 904             {
 905                 req->handle = handle;
 906                 req->tid_in = 0;
 907                 status = wine_server_call( req );
 908                 if (status == STATUS_SUCCESS)
 909                 {
 910                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 911                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 912                 }
 913             }
 914             SERVER_END_REQ;
 915             if (status == STATUS_SUCCESS)
 916             {
 917                 /* We call times(2) for kernel time or user time */
 918                 /* We can only (portably) do this for the current thread */
 919                 if (handle == GetCurrentThread())
 920                 {
 921                     struct tms time_buf;
 922                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 923
 924                     times(&time_buf);
 925                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 926                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 927                 }
 928                 else
 929                 {
 930                     kusrt.KernelTime.QuadPart = 0;
 931                     kusrt.UserTime.QuadPart = 0;
 932                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 933                 }
 934                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 935                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 936             }
 937         }
 938         return status;
 939     case ThreadPriority:
 940     case ThreadBasePriority:
 941     case ThreadAffinityMask:
 942     case ThreadImpersonationToken:
 943     case ThreadDescriptorTableEntry:
 944     case ThreadEnableAlignmentFaultFixup:
 945     case ThreadEventPair_Reusable:
 946     case ThreadQuerySetWin32StartAddress:
 947     case ThreadZeroTlsCell:
 948     case ThreadPerformanceCount:
 949     case ThreadAmILastThread:
 950     case ThreadIdealProcessor:
 951     case ThreadPriorityBoost:
 952     case ThreadSetTlsArrayAddress:
 953     case ThreadIsIoPending:
 954     default:
 955         FIXME( "info class %d not supported yet\n", class );
 956         return STATUS_NOT_IMPLEMENTED;
 957     }
 958 }
 959
 960
 961 /******************************************************************************
 962  *              NtSetInformationThread  (NTDLL.@)
 963  *              ZwSetInformationThread  (NTDLL.@)
 964  */
 965 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 966                                         LPCVOID data, ULONG length )
 967 {
 968     NTSTATUS status;
 969     switch(class)
 970     {
 971     case ThreadZeroTlsCell:
 972         if (handle == GetCurrentThread())
 973         {
 974             LIST_ENTRY *entry;
 975             DWORD index;
 976
 977             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 978             index = *(const DWORD *)data;
 979             if (index < TLS_MINIMUM_AVAILABLE)
 980             {
 981                 RtlAcquirePebLock();
 982                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 983                 {
 984                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 985                     teb->TlsSlots[index] = 0;
 986                 }
 987                 RtlReleasePebLock();
 988             }
 989             else
 990             {
 991                 index -= TLS_MINIMUM_AVAILABLE;
 992                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 993                     return STATUS_INVALID_PARAMETER;
 994                 RtlAcquirePebLock();
 995                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 996                 {
 997                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 998                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 999                 }
1000                 RtlReleasePebLock();
1001             }
1002             return STATUS_SUCCESS;
1003         }
1004         FIXME( "ZeroTlsCell not supported on other threads\n" );
1005         return STATUS_NOT_IMPLEMENTED;
1006
1007     case ThreadImpersonationToken:
1008         {
1009             const HANDLE *phToken = data;
1010             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1011             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1012             SERVER_START_REQ( set_thread_info )
1013             {
1014                 req->handle   = handle;
1015                 req->token    = *phToken;
1016                 req->mask     = SET_THREAD_INFO_TOKEN;
1017                 status = wine_server_call( req );
1018             }
1019             SERVER_END_REQ;
1020         }
1021         return status;
1022     case ThreadBasePriority:
1023         {
1024             const DWORD *pprio = data;
1025             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1026             SERVER_START_REQ( set_thread_info )
1027             {
1028                 req->handle   = handle;
1029                 req->priority = *pprio;
1030                 req->mask     = SET_THREAD_INFO_PRIORITY;
1031                 status = wine_server_call( req );
1032             }
1033             SERVER_END_REQ;
1034         }
1035         return status;
1036     case ThreadAffinityMask:
1037         {
1038             const DWORD *paff = data;
1039             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1040             SERVER_START_REQ( set_thread_info )
1041             {
1042                 req->handle   = handle;
1043                 req->affinity = *paff;
1044                 req->mask     = SET_THREAD_INFO_AFFINITY;
1045                 status = wine_server_call( req );
1046             }
1047             SERVER_END_REQ;
1048         }
1049         return status;
1050     case ThreadBasicInformation:
1051     case ThreadTimes:
1052     case ThreadPriority:
1053     case ThreadDescriptorTableEntry:
1054     case ThreadEnableAlignmentFaultFixup:
1055     case ThreadEventPair_Reusable:
1056     case ThreadQuerySetWin32StartAddress:
1057     case ThreadPerformanceCount:
1058     case ThreadAmILastThread:
1059     case ThreadIdealProcessor:
1060     case ThreadPriorityBoost:
1061     case ThreadSetTlsArrayAddress:
1062     case ThreadIsIoPending:
1063     default:
1064         FIXME( "info class %d not supported yet\n", class );
1065         return STATUS_NOT_IMPLEMENTED;
1066     }
1067 }
1068
1069
1070 /**********************************************************************
1071  *           NtCurrentTeb   (NTDLL.@)
1072  */
1073 #if defined(__i386__) && defined(__GNUC__)
1074
1075 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1076
1077 #elif defined(__i386__) && defined(_MSC_VER)
1078
1079 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1080
1081 #else
1082
1083 /**********************************************************************/
1084
1085 TEB * WINAPI NtCurrentTeb(void)
1086 {
1087     return pthread_functions.get_current_teb();
1088 }
1089
1090 #endif  /* __i386__ */