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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  *           fix_unicode_string
 106  *
 107  * Make sure the unicode string doesn't point beyond the end pointer
 108  */
 109 static inline void fix_unicode_string( UNICODE_STRING *str, char *end_ptr )
 110 {
 111     if ((char *)str->Buffer >= end_ptr)
 112     {
 113         str->Length = str->MaximumLength = 0;
 114         str->Buffer = NULL;
 115         return;
 116     }
 117     if ((char *)str->Buffer + str->MaximumLength > end_ptr)
 118     {
 119         str->MaximumLength = (end_ptr - (char *)str->Buffer) & ~(sizeof(WCHAR) - 1);
 120     }
 121     if (str->Length >= str->MaximumLength)
 122     {
 123         if (str->MaximumLength >= sizeof(WCHAR))
 124             str->Length = str->MaximumLength - sizeof(WCHAR);
 125         else
 126             str->Length = str->MaximumLength = 0;
 127     }
 128 }
 129
 130
 131 /***********************************************************************
 132  *           init_user_process_params
 133  *
 134  * Fill the RTL_USER_PROCESS_PARAMETERS structure from the server.
 135  */
 136 static NTSTATUS init_user_process_params( SIZE_T info_size, HANDLE *exe_file )
 137 {
 138     void *ptr;
 139     SIZE_T env_size;
 140     NTSTATUS status;
 141     RTL_USER_PROCESS_PARAMETERS *params = NULL;
 142
 143     status = NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 144                                       MEM_COMMIT, PAGE_READWRITE );
 145     if (status != STATUS_SUCCESS) return status;
 146
 147     params->AllocationSize = info_size;
 148     peb.ProcessParameters = params;
 149
 150     SERVER_START_REQ( get_startup_info )
 151     {
 152         wine_server_set_reply( req, params, info_size );
 153         if (!(status = wine_server_call( req )))
 154         {
 155             info_size = wine_server_reply_size( reply );
 156             *exe_file = reply->exe_file;
 157             params->hStdInput  = reply->hstdin;
 158             params->hStdOutput = reply->hstdout;
 159             params->hStdError  = reply->hstderr;
 160         }
 161     }
 162     SERVER_END_REQ;
 163     if (status != STATUS_SUCCESS) return status;
 164
 165     if (params->Size > info_size) params->Size = info_size;
 166
 167     /* make sure the strings are valid */
 168     fix_unicode_string( &params->CurrentDirectory.DosPath, (char *)info_size );
 169     fix_unicode_string( &params->DllPath, (char *)info_size );
 170     fix_unicode_string( &params->ImagePathName, (char *)info_size );
 171     fix_unicode_string( &params->CommandLine, (char *)info_size );
 172     fix_unicode_string( &params->WindowTitle, (char *)info_size );
 173     fix_unicode_string( &params->Desktop, (char *)info_size );
 174     fix_unicode_string( &params->ShellInfo, (char *)info_size );
 175     fix_unicode_string( &params->RuntimeInfo, (char *)info_size );
 176
 177     /* environment needs to be a separate memory block */
 178     env_size = info_size - params->Size;
 179     if (!env_size) env_size = 1;
 180     ptr = NULL;
 181     status = NtAllocateVirtualMemory( NtCurrentProcess(), &ptr, 0, &env_size,
 182                                       MEM_COMMIT, PAGE_READWRITE );
 183     if (status != STATUS_SUCCESS) return status;
 184     memcpy( ptr, (char *)params + params->Size, info_size - params->Size );
 185     params->Environment = ptr;
 186
 187     RtlNormalizeProcessParams( params );
 188     return status;
 189 }
 190
 191
 192 /***********************************************************************
 193  *           thread_init
 194  *
 195  * Setup the initial thread.
 196  *
 197  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 198  */
 199 HANDLE thread_init(void)
 200 {
 201     TEB *teb;
 202     void *addr;
 203     SIZE_T info_size;
 204     HANDLE exe_file = 0;
 205     struct ntdll_thread_data *thread_data;
 206     struct ntdll_thread_regs *thread_regs;
 207     struct wine_pthread_thread_info thread_info;
 208     static struct debug_info debug_info;  /* debug info for initial thread */
 209
 210     peb.NumberOfProcessors = 1;
 211     peb.ProcessParameters  = &params;
 212     peb.TlsBitmap          = &tls_bitmap;
 213     peb.TlsExpansionBitmap = &tls_expansion_bitmap;
 214     peb.LdrData            = &ldr;
 215     params.CurrentDirectory.DosPath.Buffer = current_dir;
 216     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 217     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 218     RtlInitializeBitMap( &tls_bitmap, peb.TlsBitmapBits, sizeof(peb.TlsBitmapBits) * 8 );
 219     RtlInitializeBitMap( &tls_expansion_bitmap, peb.TlsExpansionBitmapBits,
 220                          sizeof(peb.TlsExpansionBitmapBits) * 8 );
 221     InitializeListHead( &ldr.InLoadOrderModuleList );
 222     InitializeListHead( &ldr.InMemoryOrderModuleList );
 223     InitializeListHead( &ldr.InInitializationOrderModuleList );
 224     InitializeListHead( &tls_links );
 225
 226     sigstack_total_size = get_signal_stack_total_size();
 227     thread_info.teb_size = sigstack_total_size;
 228     VIRTUAL_alloc_teb( &addr, thread_info.teb_size, TRUE );
 229     teb = addr;
 230     init_teb( teb );
 231     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 232     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 233     thread_data->debug_info = &debug_info;
 234     InsertHeadList( &tls_links, &teb->TlsLinks );
 235
 236     thread_info.stack_base = NULL;
 237     thread_info.stack_size = 0;
 238     thread_info.teb_base   = teb;
 239     thread_info.teb_sel    = thread_regs->fs;
 240     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 241     pthread_functions.init_current_teb( &thread_info );
 242     pthread_functions.init_thread( &thread_info );
 243
 244     debug_info.str_pos = debug_info.strings;
 245     debug_info.out_pos = debug_info.output;
 246     debug_init();
 247
 248     /* setup the server connection */
 249     server_init_process();
 250     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 251
 252     /* create the process heap */
 253     if (!(peb.ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 254     {
 255         MESSAGE( "wine: failed to create the process heap\n" );
 256         exit(1);
 257     }
 258
 259     /* allocate user parameters */
 260     if (info_size)
 261     {
 262         init_user_process_params( info_size, &exe_file );
 263     }
 264     else
 265     {
 266         /* This is wine specific: we have no parent (we're started from unix)
 267          * so, create a simple console with bare handles to unix stdio
 268          */
 269         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 270         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 271         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 272     }
 273     return exe_file;
 274 }
 275
 276
 277 /***********************************************************************
 278  *           start_thread
 279  *
 280  * Startup routine for a newly created thread.
 281  */
 282 static void start_thread( struct wine_pthread_thread_info *info )
 283 {
 284     TEB *teb = info->teb_base;
 285     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 286     struct startup_info *startup_info = (struct startup_info *)info;
 287     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 288     void *arg = startup_info->entry_arg;
 289     struct debug_info debug_info;
 290     SIZE_T size, page_size = getpagesize();
 291
 292     debug_info.str_pos = debug_info.strings;
 293     debug_info.out_pos = debug_info.output;
 294     thread_data->debug_info = &debug_info;
 295
 296     pthread_functions.init_current_teb( info );
 297     SIGNAL_Init();
 298     server_init_thread( info->pid, info->tid, func );
 299     pthread_functions.init_thread( info );
 300
 301     /* allocate a memory view for the stack */
 302     size = info->stack_size;
 303     teb->DeallocationStack = info->stack_base;
 304     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 305                              &size, MEM_SYSTEM, PAGE_READWRITE );
 306     /* limit is lower than base since the stack grows down */
 307     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 308     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 309
 310     /* setup the guard page */
 311     size = page_size;
 312     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 313     RtlFreeHeap( GetProcessHeap(), 0, info );
 314
 315     RtlAcquirePebLock();
 316     InsertHeadList( &tls_links, &teb->TlsLinks );
 317     RtlReleasePebLock();
 318
 319     func( arg );
 320 }
 321
 322
 323 /***********************************************************************
 324  *              RtlCreateUserThread   (NTDLL.@)
 325  */
 326 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 327                                      BOOLEAN suspended, PVOID stack_addr,
 328                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 329                                      PRTL_THREAD_START_ROUTINE start, void *param,
 330                                      HANDLE *handle_ptr, CLIENT_ID *id )
 331 {
 332     struct ntdll_thread_data *thread_data;
 333     struct ntdll_thread_regs *thread_regs = NULL;
 334     struct startup_info *info = NULL;
 335     void *addr;
 336     HANDLE handle = 0;
 337     TEB *teb;
 338     DWORD tid = 0;
 339     int request_pipe[2];
 340     NTSTATUS status;
 341     SIZE_T page_size = getpagesize();
 342
 343     if( ! is_current_process( process ) )
 344     {
 345         ERR("Unsupported on other process\n");
 346         return STATUS_ACCESS_DENIED;
 347     }
 348
 349     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 350     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 351     wine_server_send_fd( request_pipe[0] );
 352
 353     SERVER_START_REQ( new_thread )
 354     {
 355         req->access     = THREAD_ALL_ACCESS;
 356         req->attributes = 0;  /* FIXME */
 357         req->suspend    = suspended;
 358         req->request_fd = request_pipe[0];
 359         if (!(status = wine_server_call( req )))
 360         {
 361             handle = reply->handle;
 362             tid = reply->tid;
 363         }
 364         close( request_pipe[0] );
 365     }
 366     SERVER_END_REQ;
 367
 368     if (status) goto error;
 369
 370     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 371     {
 372         status = STATUS_NO_MEMORY;
 373         goto error;
 374     }
 375
 376     info->pthread_info.teb_size = sigstack_total_size;
 377     if ((status = VIRTUAL_alloc_teb( &addr, info->pthread_info.teb_size, FALSE ))) goto error;
 378     teb = addr;
 379     if ((status = init_teb( teb ))) goto error;
 380
 381     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 382     teb->ClientId.UniqueThread  = (HANDLE)tid;
 383
 384     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 385     thread_regs = (struct ntdll_thread_regs *)teb->SpareBytes1;
 386     thread_data->request_fd  = request_pipe[1];
 387
 388     info->pthread_info.teb_base = teb;
 389     info->pthread_info.teb_sel  = thread_regs->fs;
 390
 391     /* inherit debug registers from parent thread */
 392     thread_regs->dr0 = ntdll_get_thread_regs()->dr0;
 393     thread_regs->dr1 = ntdll_get_thread_regs()->dr1;
 394     thread_regs->dr2 = ntdll_get_thread_regs()->dr2;
 395     thread_regs->dr3 = ntdll_get_thread_regs()->dr3;
 396     thread_regs->dr6 = ntdll_get_thread_regs()->dr6;
 397     thread_regs->dr7 = ntdll_get_thread_regs()->dr7;
 398
 399     if (!stack_reserve || !stack_commit)
 400     {
 401         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 402         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 403         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 404     }
 405     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 406     stack_reserve += page_size;  /* for the guard page */
 407     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 408     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 409
 410     info->pthread_info.stack_base = NULL;
 411     info->pthread_info.stack_size = stack_reserve;
 412     info->pthread_info.entry      = start_thread;
 413     info->entry_point             = start;
 414     info->entry_arg               = param;
 415
 416     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 417     {
 418         status = STATUS_NO_MEMORY;
 419         goto error;
 420     }
 421
 422     if (id) id->UniqueThread = (HANDLE)tid;
 423     if (handle_ptr) *handle_ptr = handle;
 424     else NtClose( handle );
 425
 426     return STATUS_SUCCESS;
 427
 428 error:
 429     if (thread_regs) wine_ldt_free_fs( thread_regs->fs );
 430     if (addr)
 431     {
 432         SIZE_T size = 0;
 433         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 434     }
 435     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 436     if (handle) NtClose( handle );
 437     close( request_pipe[1] );
 438     return status;
 439 }
 440
 441
 442 /***********************************************************************
 443  *           RtlExitUserThread  (NTDLL.@)
 444  */
 445 void WINAPI RtlExitUserThread( ULONG status )
 446 {
 447     LdrShutdownThread();
 448     server_exit_thread( status );
 449 }
 450
 451
 452 /***********************************************************************
 453  *              NtOpenThread   (NTDLL.@)
 454  *              ZwOpenThread   (NTDLL.@)
 455  */
 456 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 457                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 458 {
 459     NTSTATUS ret;
 460
 461     SERVER_START_REQ( open_thread )
 462     {
 463         req->tid        = (thread_id_t)id->UniqueThread;
 464         req->access     = access;
 465         req->attributes = attr ? attr->Attributes : 0;
 466         ret = wine_server_call( req );
 467         *handle = reply->handle;
 468     }
 469     SERVER_END_REQ;
 470     return ret;
 471 }
 472
 473
 474 /******************************************************************************
 475  *              NtSuspendThread   (NTDLL.@)
 476  *              ZwSuspendThread   (NTDLL.@)
 477  */
 478 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 479 {
 480     NTSTATUS ret;
 481
 482     SERVER_START_REQ( suspend_thread )
 483     {
 484         req->handle = handle;
 485         if (!(ret = wine_server_call( req ))) *count = reply->count;
 486     }
 487     SERVER_END_REQ;
 488     return ret;
 489 }
 490
 491
 492 /******************************************************************************
 493  *              NtResumeThread   (NTDLL.@)
 494  *              ZwResumeThread   (NTDLL.@)
 495  */
 496 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 497 {
 498     NTSTATUS ret;
 499
 500     SERVER_START_REQ( resume_thread )
 501     {
 502         req->handle = handle;
 503         if (!(ret = wine_server_call( req ))) *count = reply->count;
 504     }
 505     SERVER_END_REQ;
 506     return ret;
 507 }
 508
 509
 510 /******************************************************************************
 511  *              NtAlertResumeThread   (NTDLL.@)
 512  *              ZwAlertResumeThread   (NTDLL.@)
 513  */
 514 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 515 {
 516     FIXME( "stub: should alert thread %p\n", handle );
 517     return NtResumeThread( handle, count );
 518 }
 519
 520
 521 /******************************************************************************
 522  *              NtAlertThread   (NTDLL.@)
 523  *              ZwAlertThread   (NTDLL.@)
 524  */
 525 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 526 {
 527     FIXME( "stub: %p\n", handle );
 528     return STATUS_NOT_IMPLEMENTED;
 529 }
 530
 531
 532 /******************************************************************************
 533  *              NtTerminateThread  (NTDLL.@)
 534  *              ZwTerminateThread  (NTDLL.@)
 535  */
 536 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 537 {
 538     NTSTATUS ret;
 539     BOOL self, last;
 540
 541     SERVER_START_REQ( terminate_thread )
 542     {
 543         req->handle    = handle;
 544         req->exit_code = exit_code;
 545         ret = wine_server_call( req );
 546         self = !ret && reply->self;
 547         last = reply->last;
 548     }
 549     SERVER_END_REQ;
 550
 551     if (self)
 552     {
 553         if (last) exit( exit_code );
 554         else server_abort_thread( exit_code );
 555     }
 556     return ret;
 557 }
 558
 559
 560 /******************************************************************************
 561  *              NtQueueApcThread  (NTDLL.@)
 562  */
 563 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 564                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 565 {
 566     NTSTATUS ret;
 567     SERVER_START_REQ( queue_apc )
 568     {
 569         req->handle = handle;
 570         req->user   = 1;
 571         req->func   = func;
 572         req->arg1   = (void *)arg1;
 573         req->arg2   = (void *)arg2;
 574         req->arg3   = (void *)arg3;
 575         ret = wine_server_call( req );
 576     }
 577     SERVER_END_REQ;
 578     return ret;
 579 }
 580
 581
 582 /***********************************************************************
 583  *              NtSetContextThread  (NTDLL.@)
 584  *              ZwSetContextThread  (NTDLL.@)
 585  */
 586 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 587 {
 588     NTSTATUS ret;
 589     DWORD dummy, i;
 590     BOOL self = FALSE;
 591
 592 #ifdef __i386__
 593     /* on i386 debug registers always require a server call */
 594     self = (handle == GetCurrentThread());
 595     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 596     {
 597         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 598         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 599                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 600                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 601     }
 602 #endif
 603
 604     if (!self)
 605     {
 606         SERVER_START_REQ( set_thread_context )
 607         {
 608             req->handle  = handle;
 609             req->flags   = context->ContextFlags;
 610             req->suspend = 0;
 611             wine_server_add_data( req, context, sizeof(*context) );
 612             ret = wine_server_call( req );
 613             self = reply->self;
 614         }
 615         SERVER_END_REQ;
 616
 617         if (ret == STATUS_PENDING)
 618         {
 619             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 620             {
 621                 for (i = 0; i < 100; i++)
 622                 {
 623                     SERVER_START_REQ( set_thread_context )
 624                     {
 625                         req->handle  = handle;
 626                         req->flags   = context->ContextFlags;
 627                         req->suspend = 0;
 628                         wine_server_add_data( req, context, sizeof(*context) );
 629                         ret = wine_server_call( req );
 630                     }
 631                     SERVER_END_REQ;
 632                     if (ret != STATUS_PENDING) break;
 633                     NtYieldExecution();
 634                 }
 635                 NtResumeThread( handle, &dummy );
 636             }
 637             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 638         }
 639
 640         if (ret) return ret;
 641     }
 642
 643     if (self) set_cpu_context( context );
 644     return STATUS_SUCCESS;
 645 }
 646
 647
 648 /* copy a context structure according to the flags */
 649 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 650 {
 651 #ifdef __i386__
 652     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 653     if (flags & CONTEXT_INTEGER)
 654     {
 655         to->Eax = from->Eax;
 656         to->Ebx = from->Ebx;
 657         to->Ecx = from->Ecx;
 658         to->Edx = from->Edx;
 659         to->Esi = from->Esi;
 660         to->Edi = from->Edi;
 661     }
 662     if (flags & CONTEXT_CONTROL)
 663     {
 664         to->Ebp    = from->Ebp;
 665         to->Esp    = from->Esp;
 666         to->Eip    = from->Eip;
 667         to->SegCs  = from->SegCs;
 668         to->SegSs  = from->SegSs;
 669         to->EFlags = from->EFlags;
 670     }
 671     if (flags & CONTEXT_SEGMENTS)
 672     {
 673         to->SegDs = from->SegDs;
 674         to->SegEs = from->SegEs;
 675         to->SegFs = from->SegFs;
 676         to->SegGs = from->SegGs;
 677     }
 678     if (flags & CONTEXT_DEBUG_REGISTERS)
 679     {
 680         to->Dr0 = from->Dr0;
 681         to->Dr1 = from->Dr1;
 682         to->Dr2 = from->Dr2;
 683         to->Dr3 = from->Dr3;
 684         to->Dr6 = from->Dr6;
 685         to->Dr7 = from->Dr7;
 686     }
 687     if (flags & CONTEXT_FLOATING_POINT)
 688     {
 689         to->FloatSave = from->FloatSave;
 690     }
 691 #elif defined(__x86_64__)
 692     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 693     if (flags & CONTEXT_CONTROL)
 694     {
 695         to->Rbp    = from->Rbp;
 696         to->Rip    = from->Rip;
 697         to->Rsp    = from->Rsp;
 698         to->SegCs  = from->SegCs;
 699         to->SegSs  = from->SegSs;
 700         to->EFlags = from->EFlags;
 701         to->MxCsr  = from->MxCsr;
 702     }
 703     if (flags & CONTEXT_INTEGER)
 704     {
 705         to->Rax = from->Rax;
 706         to->Rcx = from->Rcx;
 707         to->Rdx = from->Rdx;
 708         to->Rbx = from->Rbx;
 709         to->Rsi = from->Rsi;
 710         to->Rdi = from->Rdi;
 711         to->R8  = from->R8;
 712         to->R9  = from->R9;
 713         to->R10 = from->R10;
 714         to->R11 = from->R11;
 715         to->R12 = from->R12;
 716         to->R13 = from->R13;
 717         to->R14 = from->R14;
 718         to->R15 = from->R15;
 719     }
 720     if (flags & CONTEXT_SEGMENTS)
 721     {
 722         to->SegDs = from->SegDs;
 723         to->SegEs = from->SegEs;
 724         to->SegFs = from->SegFs;
 725         to->SegGs = from->SegGs;
 726     }
 727     if (flags & CONTEXT_FLOATING_POINT)
 728     {
 729         to->u.FltSave = from->u.FltSave;
 730     }
 731     if (flags & CONTEXT_DEBUG_REGISTERS)
 732     {
 733         to->Dr0 = from->Dr0;
 734         to->Dr1 = from->Dr1;
 735         to->Dr2 = from->Dr2;
 736         to->Dr3 = from->Dr3;
 737         to->Dr6 = from->Dr6;
 738         to->Dr7 = from->Dr7;
 739     }
 740 #elif defined(__sparc__)
 741     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 742     if (flags & CONTEXT_CONTROL)
 743     {
 744         to->psr = from->psr;
 745         to->pc  = from->pc;
 746         to->npc = from->npc;
 747         to->y   = from->y;
 748         to->wim = from->wim;
 749         to->tbr = from->tbr;
 750     }
 751     if (flags & CONTEXT_INTEGER)
 752     {
 753         to->g0 = from->g0;
 754         to->g1 = from->g1;
 755         to->g2 = from->g2;
 756         to->g3 = from->g3;
 757         to->g4 = from->g4;
 758         to->g5 = from->g5;
 759         to->g6 = from->g6;
 760         to->g7 = from->g7;
 761         to->o0 = from->o0;
 762         to->o1 = from->o1;
 763         to->o2 = from->o2;
 764         to->o3 = from->o3;
 765         to->o4 = from->o4;
 766         to->o5 = from->o5;
 767         to->o6 = from->o6;
 768         to->o7 = from->o7;
 769         to->l0 = from->l0;
 770         to->l1 = from->l1;
 771         to->l2 = from->l2;
 772         to->l3 = from->l3;
 773         to->l4 = from->l4;
 774         to->l5 = from->l5;
 775         to->l6 = from->l6;
 776         to->l7 = from->l7;
 777         to->i0 = from->i0;
 778         to->i1 = from->i1;
 779         to->i2 = from->i2;
 780         to->i3 = from->i3;
 781         to->i4 = from->i4;
 782         to->i5 = from->i5;
 783         to->i6 = from->i6;
 784         to->i7 = from->i7;
 785     }
 786     if (flags & CONTEXT_FLOATING_POINT)
 787     {
 788         /* FIXME */
 789     }
 790 #elif defined(__powerpc__)
 791     /* Has no CPU id */
 792     if (flags & CONTEXT_CONTROL)
 793     {
 794         to->Msr = from->Msr;
 795         to->Ctr = from->Ctr;
 796         to->Iar = from->Iar;
 797     }
 798     if (flags & CONTEXT_INTEGER)
 799     {
 800         to->Gpr0  = from->Gpr0;
 801         to->Gpr1  = from->Gpr1;
 802         to->Gpr2  = from->Gpr2;
 803         to->Gpr3  = from->Gpr3;
 804         to->Gpr4  = from->Gpr4;
 805         to->Gpr5  = from->Gpr5;
 806         to->Gpr6  = from->Gpr6;
 807         to->Gpr7  = from->Gpr7;
 808         to->Gpr8  = from->Gpr8;
 809         to->Gpr9  = from->Gpr9;
 810         to->Gpr10 = from->Gpr10;
 811         to->Gpr11 = from->Gpr11;
 812         to->Gpr12 = from->Gpr12;
 813         to->Gpr13 = from->Gpr13;
 814         to->Gpr14 = from->Gpr14;
 815         to->Gpr15 = from->Gpr15;
 816         to->Gpr16 = from->Gpr16;
 817         to->Gpr17 = from->Gpr17;
 818         to->Gpr18 = from->Gpr18;
 819         to->Gpr19 = from->Gpr19;
 820         to->Gpr20 = from->Gpr20;
 821         to->Gpr21 = from->Gpr21;
 822         to->Gpr22 = from->Gpr22;
 823         to->Gpr23 = from->Gpr23;
 824         to->Gpr24 = from->Gpr24;
 825         to->Gpr25 = from->Gpr25;
 826         to->Gpr26 = from->Gpr26;
 827         to->Gpr27 = from->Gpr27;
 828         to->Gpr28 = from->Gpr28;
 829         to->Gpr29 = from->Gpr29;
 830         to->Gpr30 = from->Gpr30;
 831         to->Gpr31 = from->Gpr31;
 832         to->Xer   = from->Xer;
 833         to->Cr    = from->Cr;
 834     }
 835     if (flags & CONTEXT_FLOATING_POINT)
 836     {
 837         to->Fpr0  = from->Fpr0;
 838         to->Fpr1  = from->Fpr1;
 839         to->Fpr2  = from->Fpr2;
 840         to->Fpr3  = from->Fpr3;
 841         to->Fpr4  = from->Fpr4;
 842         to->Fpr5  = from->Fpr5;
 843         to->Fpr6  = from->Fpr6;
 844         to->Fpr7  = from->Fpr7;
 845         to->Fpr8  = from->Fpr8;
 846         to->Fpr9  = from->Fpr9;
 847         to->Fpr10 = from->Fpr10;
 848         to->Fpr11 = from->Fpr11;
 849         to->Fpr12 = from->Fpr12;
 850         to->Fpr13 = from->Fpr13;
 851         to->Fpr14 = from->Fpr14;
 852         to->Fpr15 = from->Fpr15;
 853         to->Fpr16 = from->Fpr16;
 854         to->Fpr17 = from->Fpr17;
 855         to->Fpr18 = from->Fpr18;
 856         to->Fpr19 = from->Fpr19;
 857         to->Fpr20 = from->Fpr20;
 858         to->Fpr21 = from->Fpr21;
 859         to->Fpr22 = from->Fpr22;
 860         to->Fpr23 = from->Fpr23;
 861         to->Fpr24 = from->Fpr24;
 862         to->Fpr25 = from->Fpr25;
 863         to->Fpr26 = from->Fpr26;
 864         to->Fpr27 = from->Fpr27;
 865         to->Fpr28 = from->Fpr28;
 866         to->Fpr29 = from->Fpr29;
 867         to->Fpr30 = from->Fpr30;
 868         to->Fpr31 = from->Fpr31;
 869         to->Fpscr = from->Fpscr;
 870     }
 871 #else
 872 #error You must implement context copying for your CPU
 873 #endif
 874 }
 875
 876
 877 /***********************************************************************
 878  *              NtGetContextThread  (NTDLL.@)
 879  *              ZwGetContextThread  (NTDLL.@)
 880  */
 881 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 882 {
 883     NTSTATUS ret;
 884     CONTEXT ctx;
 885     DWORD dummy, i;
 886     BOOL self = FALSE;
 887
 888     SERVER_START_REQ( get_thread_context )
 889     {
 890         req->handle  = handle;
 891         req->flags   = context->ContextFlags;
 892         req->suspend = 0;
 893         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 894         ret = wine_server_call( req );
 895         self = reply->self;
 896     }
 897     SERVER_END_REQ;
 898
 899     if (ret == STATUS_PENDING)
 900     {
 901         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 902         {
 903             for (i = 0; i < 100; i++)
 904             {
 905                 SERVER_START_REQ( get_thread_context )
 906                 {
 907                     req->handle  = handle;
 908                     req->flags   = context->ContextFlags;
 909                     req->suspend = 0;
 910                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 911                     ret = wine_server_call( req );
 912                 }
 913                 SERVER_END_REQ;
 914                 if (ret != STATUS_PENDING) break;
 915                 NtYieldExecution();
 916             }
 917             NtResumeThread( handle, &dummy );
 918         }
 919     }
 920
 921     if (ret == STATUS_SUCCESS)
 922     {
 923         copy_context( context, &ctx, context->ContextFlags );
 924 #ifdef __i386__
 925         /* update the cached version of the debug registers */
 926         if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 927         {
 928             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 929             regs->dr0 = context->Dr0;
 930             regs->dr1 = context->Dr1;
 931             regs->dr2 = context->Dr2;
 932             regs->dr3 = context->Dr3;
 933             regs->dr6 = context->Dr6;
 934             regs->dr7 = context->Dr7;
 935         }
 936 #endif
 937     }
 938     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 939     return ret;
 940 }
 941
 942
 943 /******************************************************************************
 944  *              NtQueryInformationThread  (NTDLL.@)
 945  *              ZwQueryInformationThread  (NTDLL.@)
 946  */
 947 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 948                                           void *data, ULONG length, ULONG *ret_len )
 949 {
 950     NTSTATUS status;
 951
 952     switch(class)
 953     {
 954     case ThreadBasicInformation:
 955         {
 956             THREAD_BASIC_INFORMATION info;
 957
 958             SERVER_START_REQ( get_thread_info )
 959             {
 960                 req->handle = handle;
 961                 req->tid_in = 0;
 962                 if (!(status = wine_server_call( req )))
 963                 {
 964                     info.ExitStatus             = reply->exit_code;
 965                     info.TebBaseAddress         = reply->teb;
 966                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 967                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 968                     info.AffinityMask           = reply->affinity;
 969                     info.Priority               = reply->priority;
 970                     info.BasePriority           = reply->priority;  /* FIXME */
 971                 }
 972             }
 973             SERVER_END_REQ;
 974             if (status == STATUS_SUCCESS)
 975             {
 976                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 977                 if (ret_len) *ret_len = min( length, sizeof(info) );
 978             }
 979         }
 980         return status;
 981     case ThreadTimes:
 982         {
 983             KERNEL_USER_TIMES   kusrt;
 984             /* We need to do a server call to get the creation time or exit time */
 985             /* This works on any thread */
 986             SERVER_START_REQ( get_thread_info )
 987             {
 988                 req->handle = handle;
 989                 req->tid_in = 0;
 990                 status = wine_server_call( req );
 991                 if (status == STATUS_SUCCESS)
 992                 {
 993                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 994                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 995                 }
 996             }
 997             SERVER_END_REQ;
 998             if (status == STATUS_SUCCESS)
 999             {
1000                 /* We call times(2) for kernel time or user time */
1001                 /* We can only (portably) do this for the current thread */
1002                 if (handle == GetCurrentThread())
1003                 {
1004                     struct tms time_buf;
1005                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
1006
1007                     times(&time_buf);
1008                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
1009                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
1010                 }
1011                 else
1012                 {
1013                     kusrt.KernelTime.QuadPart = 0;
1014                     kusrt.UserTime.QuadPart = 0;
1015                     FIXME("Cannot get kerneltime or usertime of other threads\n");
1016                 }
1017                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
1018                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
1019             }
1020         }
1021         return status;
1022     case ThreadPriority:
1023     case ThreadBasePriority:
1024     case ThreadAffinityMask:
1025     case ThreadImpersonationToken:
1026     case ThreadDescriptorTableEntry:
1027     case ThreadEnableAlignmentFaultFixup:
1028     case ThreadEventPair_Reusable:
1029     case ThreadQuerySetWin32StartAddress:
1030     case ThreadZeroTlsCell:
1031     case ThreadPerformanceCount:
1032     case ThreadAmILastThread:
1033     case ThreadIdealProcessor:
1034     case ThreadPriorityBoost:
1035     case ThreadSetTlsArrayAddress:
1036     case ThreadIsIoPending:
1037     default:
1038         FIXME( "info class %d not supported yet\n", class );
1039         return STATUS_NOT_IMPLEMENTED;
1040     }
1041 }
1042
1043
1044 /******************************************************************************
1045  *              NtSetInformationThread  (NTDLL.@)
1046  *              ZwSetInformationThread  (NTDLL.@)
1047  */
1048 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
1049                                         LPCVOID data, ULONG length )
1050 {
1051     NTSTATUS status;
1052     switch(class)
1053     {
1054     case ThreadZeroTlsCell:
1055         if (handle == GetCurrentThread())
1056         {
1057             LIST_ENTRY *entry;
1058             DWORD index;
1059
1060             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1061             index = *(const DWORD *)data;
1062             if (index < TLS_MINIMUM_AVAILABLE)
1063             {
1064                 RtlAcquirePebLock();
1065                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1066                 {
1067                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1068                     teb->TlsSlots[index] = 0;
1069                 }
1070                 RtlReleasePebLock();
1071             }
1072             else
1073             {
1074                 index -= TLS_MINIMUM_AVAILABLE;
1075                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
1076                     return STATUS_INVALID_PARAMETER;
1077                 RtlAcquirePebLock();
1078                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
1079                 {
1080                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
1081                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
1082                 }
1083                 RtlReleasePebLock();
1084             }
1085             return STATUS_SUCCESS;
1086         }
1087         FIXME( "ZeroTlsCell not supported on other threads\n" );
1088         return STATUS_NOT_IMPLEMENTED;
1089
1090     case ThreadImpersonationToken:
1091         {
1092             const HANDLE *phToken = data;
1093             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1094             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1095             SERVER_START_REQ( set_thread_info )
1096             {
1097                 req->handle   = handle;
1098                 req->token    = *phToken;
1099                 req->mask     = SET_THREAD_INFO_TOKEN;
1100                 status = wine_server_call( req );
1101             }
1102             SERVER_END_REQ;
1103         }
1104         return status;
1105     case ThreadBasePriority:
1106         {
1107             const DWORD *pprio = data;
1108             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1109             SERVER_START_REQ( set_thread_info )
1110             {
1111                 req->handle   = handle;
1112                 req->priority = *pprio;
1113                 req->mask     = SET_THREAD_INFO_PRIORITY;
1114                 status = wine_server_call( req );
1115             }
1116             SERVER_END_REQ;
1117         }
1118         return status;
1119     case ThreadAffinityMask:
1120         {
1121             const DWORD *paff = data;
1122             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1123             SERVER_START_REQ( set_thread_info )
1124             {
1125                 req->handle   = handle;
1126                 req->affinity = *paff;
1127                 req->mask     = SET_THREAD_INFO_AFFINITY;
1128                 status = wine_server_call( req );
1129             }
1130             SERVER_END_REQ;
1131         }
1132         return status;
1133     case ThreadBasicInformation:
1134     case ThreadTimes:
1135     case ThreadPriority:
1136     case ThreadDescriptorTableEntry:
1137     case ThreadEnableAlignmentFaultFixup:
1138     case ThreadEventPair_Reusable:
1139     case ThreadQuerySetWin32StartAddress:
1140     case ThreadPerformanceCount:
1141     case ThreadAmILastThread:
1142     case ThreadIdealProcessor:
1143     case ThreadPriorityBoost:
1144     case ThreadSetTlsArrayAddress:
1145     case ThreadIsIoPending:
1146     default:
1147         FIXME( "info class %d not supported yet\n", class );
1148         return STATUS_NOT_IMPLEMENTED;
1149     }
1150 }
1151
1152
1153 /**********************************************************************
1154  *           NtCurrentTeb   (NTDLL.@)
1155  */
1156 #if defined(__i386__) && defined(__GNUC__)
1157
1158 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1159
1160 #elif defined(__i386__) && defined(_MSC_VER)
1161
1162 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1163
1164 #else
1165
1166 /**********************************************************************/
1167
1168 TEB * WINAPI NtCurrentTeb(void)
1169 {
1170     return pthread_functions.get_current_teb();
1171 }
1172
1173 #endif  /* __i386__ */