git.oblomov.eu Git - wine/blob - dlls/ntdll/thread.c

   1 /*
   2  * NT threads support
   3  *
   4  * Copyright 1996, 2003 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <sys/types.h>
  25 #ifdef HAVE_SYS_MMAN_H
  26 #include <sys/mman.h>
  27 #endif
  28 #ifdef HAVE_SYS_TIMES_H
  29 #include <sys/times.h>
  30 #endif
  31
  32 #define NONAMELESSUNION
  33 #include "ntstatus.h"
  34 #define WIN32_NO_STATUS
  35 #include "thread.h"
  36 #include "winternl.h"
  37 #include "wine/library.h"
  38 #include "wine/server.h"
  39 #include "wine/pthread.h"
  40 #include "wine/debug.h"
  41 #include "ntdll_misc.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(thread);
  44
  45 /* info passed to a starting thread */
  46 struct startup_info
  47 {
  48     struct wine_pthread_thread_info pthread_info;
  49     PRTL_THREAD_START_ROUTINE       entry_point;
  50     void                           *entry_arg;
  51 };
  52
  53 static PEB peb;
  54 static PEB_LDR_DATA ldr;
  55 static RTL_USER_PROCESS_PARAMETERS params;  /* default parameters if no parent */
  56 static WCHAR current_dir[MAX_NT_PATH_LENGTH];
  57 static RTL_BITMAP tls_bitmap;
  58 static RTL_BITMAP tls_expansion_bitmap;
  59 static LIST_ENTRY tls_links;
  60 static size_t sigstack_total_size;
  61
  62 struct wine_pthread_functions pthread_functions = { NULL };
  63
  64 /***********************************************************************
  65  *           init_teb
  66  */
  67 static inline NTSTATUS init_teb( TEB *teb )
  68 {
  69     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  70
  71     teb->Tib.ExceptionList = (void *)~0UL;
  72     teb->Tib.StackBase     = (void *)~0UL;
  73     teb->Tib.Self          = &teb->Tib;
  74     teb->Peb               = &peb;
  75     teb->StaticUnicodeString.Buffer        = teb->StaticUnicodeBuffer;
  76     teb->StaticUnicodeString.MaximumLength = sizeof(teb->StaticUnicodeBuffer);
  77
  78     if (!(thread_data->teb_sel = wine_ldt_alloc_fs())) return STATUS_TOO_MANY_THREADS;
  79     thread_data->request_fd = -1;
  80     thread_data->reply_fd   = -1;
  81     thread_data->wait_fd[0] = -1;
  82     thread_data->wait_fd[1] = -1;
  83
  84     return STATUS_SUCCESS;
  85 }
  86
  87
  88 /***********************************************************************
  89  *           free_teb
  90  */
  91 static inline void free_teb( TEB *teb )
  92 {
  93     SIZE_T size = 0;
  94     void *addr = teb;
  95     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
  96
  97     NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
  98     wine_ldt_free_fs( thread_data->teb_sel );
  99     munmap( teb, sigstack_total_size );
 100 }
 101
 102
 103 /***********************************************************************
 104  *           thread_init
 105  *
 106  * Setup the initial thread.
 107  *
 108  * NOTES: The first allocated TEB on NT is at 0x7ffde000.
 109  */
 110 void thread_init(void)
 111 {
 112     TEB *teb;
 113     void *addr;
 114     SIZE_T info_size;
 115     struct ntdll_thread_data *thread_data;
 116     struct wine_pthread_thread_info thread_info;
 117     static struct debug_info debug_info;  /* debug info for initial thread */
 118
 119     peb.NumberOfProcessors = 1;
 120     peb.ProcessParameters  = &params;
 121     peb.TlsBitmap          = &tls_bitmap;
 122     peb.TlsExpansionBitmap = &tls_expansion_bitmap;
 123     peb.LdrData            = &ldr;
 124     params.CurrentDirectory.DosPath.Buffer = current_dir;
 125     params.CurrentDirectory.DosPath.MaximumLength = sizeof(current_dir);
 126     params.wShowWindow = 1; /* SW_SHOWNORMAL */
 127     RtlInitializeBitMap( &tls_bitmap, peb.TlsBitmapBits, sizeof(peb.TlsBitmapBits) * 8 );
 128     RtlInitializeBitMap( &tls_expansion_bitmap, peb.TlsExpansionBitmapBits,
 129                          sizeof(peb.TlsExpansionBitmapBits) * 8 );
 130     InitializeListHead( &ldr.InLoadOrderModuleList );
 131     InitializeListHead( &ldr.InMemoryOrderModuleList );
 132     InitializeListHead( &ldr.InInitializationOrderModuleList );
 133     InitializeListHead( &tls_links );
 134
 135     sigstack_total_size = get_signal_stack_total_size();
 136     thread_info.teb_size = sigstack_total_size;
 137     VIRTUAL_alloc_teb( &addr, thread_info.teb_size, TRUE );
 138     teb = addr;
 139     init_teb( teb );
 140     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 141     thread_data->debug_info = &debug_info;
 142     InsertHeadList( &tls_links, &teb->TlsLinks );
 143
 144     thread_info.stack_base = NULL;
 145     thread_info.stack_size = 0;
 146     thread_info.teb_base   = teb;
 147     thread_info.teb_sel    = thread_data->teb_sel;
 148     wine_pthread_get_functions( &pthread_functions, sizeof(pthread_functions) );
 149     pthread_functions.init_current_teb( &thread_info );
 150     pthread_functions.init_thread( &thread_info );
 151
 152     debug_info.str_pos = debug_info.strings;
 153     debug_info.out_pos = debug_info.output;
 154     debug_init();
 155
 156     /* setup the server connection */
 157     server_init_process();
 158     info_size = server_init_thread( thread_info.pid, thread_info.tid, NULL );
 159
 160     /* create the process heap */
 161     if (!(peb.ProcessHeap = RtlCreateHeap( HEAP_GROWABLE, NULL, 0, 0, NULL, NULL )))
 162     {
 163         MESSAGE( "wine: failed to create the process heap\n" );
 164         exit(1);
 165     }
 166
 167     /* allocate user parameters */
 168     if (info_size)
 169     {
 170         RTL_USER_PROCESS_PARAMETERS *params = NULL;
 171
 172         if (NtAllocateVirtualMemory( NtCurrentProcess(), (void **)&params, 0, &info_size,
 173                                      MEM_COMMIT, PAGE_READWRITE ) == STATUS_SUCCESS)
 174         {
 175             params->AllocationSize = info_size;
 176             NtCurrentTeb()->Peb->ProcessParameters = params;
 177         }
 178     }
 179     else
 180     {
 181         /* This is wine specific: we have no parent (we're started from unix)
 182          * so, create a simple console with bare handles to unix stdio
 183          */
 184         wine_server_fd_to_handle( 0, GENERIC_READ|SYNCHRONIZE,  OBJ_INHERIT, &params.hStdInput );
 185         wine_server_fd_to_handle( 1, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdOutput );
 186         wine_server_fd_to_handle( 2, GENERIC_WRITE|SYNCHRONIZE, OBJ_INHERIT, &params.hStdError );
 187     }
 188 }
 189
 190
 191 /***********************************************************************
 192  *           start_thread
 193  *
 194  * Startup routine for a newly created thread.
 195  */
 196 static void start_thread( struct wine_pthread_thread_info *info )
 197 {
 198     TEB *teb = info->teb_base;
 199     struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 200     struct startup_info *startup_info = (struct startup_info *)info;
 201     PRTL_THREAD_START_ROUTINE func = startup_info->entry_point;
 202     void *arg = startup_info->entry_arg;
 203     struct debug_info debug_info;
 204     SIZE_T size, page_size = getpagesize();
 205
 206     debug_info.str_pos = debug_info.strings;
 207     debug_info.out_pos = debug_info.output;
 208     thread_data->debug_info = &debug_info;
 209
 210     pthread_functions.init_current_teb( info );
 211     SIGNAL_Init();
 212     server_init_thread( info->pid, info->tid, func );
 213     pthread_functions.init_thread( info );
 214
 215     /* allocate a memory view for the stack */
 216     size = info->stack_size;
 217     teb->DeallocationStack = info->stack_base;
 218     NtAllocateVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, 0,
 219                              &size, MEM_SYSTEM, PAGE_READWRITE );
 220     /* limit is lower than base since the stack grows down */
 221     teb->Tib.StackBase  = (char *)info->stack_base + info->stack_size;
 222     teb->Tib.StackLimit = (char *)info->stack_base + page_size;
 223
 224     /* setup the guard page */
 225     size = page_size;
 226     NtProtectVirtualMemory( NtCurrentProcess(), &teb->DeallocationStack, &size, PAGE_NOACCESS, NULL );
 227     RtlFreeHeap( GetProcessHeap(), 0, info );
 228
 229     RtlAcquirePebLock();
 230     InsertHeadList( &tls_links, &teb->TlsLinks );
 231     RtlReleasePebLock();
 232
 233     func( arg );
 234 }
 235
 236
 237 /***********************************************************************
 238  *              RtlCreateUserThread   (NTDLL.@)
 239  */
 240 NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR *descr,
 241                                      BOOLEAN suspended, PVOID stack_addr,
 242                                      SIZE_T stack_reserve, SIZE_T stack_commit,
 243                                      PRTL_THREAD_START_ROUTINE start, void *param,
 244                                      HANDLE *handle_ptr, CLIENT_ID *id )
 245 {
 246     struct ntdll_thread_data *thread_data = NULL;
 247     struct startup_info *info = NULL;
 248     void *addr;
 249     HANDLE handle = 0;
 250     TEB *teb;
 251     DWORD tid = 0;
 252     int request_pipe[2];
 253     NTSTATUS status;
 254     SIZE_T page_size = getpagesize();
 255
 256     if( ! is_current_process( process ) )
 257     {
 258         ERR("Unsupported on other process\n");
 259         return STATUS_ACCESS_DENIED;
 260     }
 261
 262     if (pipe( request_pipe ) == -1) return STATUS_TOO_MANY_OPENED_FILES;
 263     fcntl( request_pipe[1], F_SETFD, 1 ); /* set close on exec flag */
 264     wine_server_send_fd( request_pipe[0] );
 265
 266     SERVER_START_REQ( new_thread )
 267     {
 268         req->access     = THREAD_ALL_ACCESS;
 269         req->attributes = 0;  /* FIXME */
 270         req->suspend    = suspended;
 271         req->request_fd = request_pipe[0];
 272         if (!(status = wine_server_call( req )))
 273         {
 274             handle = reply->handle;
 275             tid = reply->tid;
 276         }
 277         close( request_pipe[0] );
 278     }
 279     SERVER_END_REQ;
 280
 281     if (status) goto error;
 282
 283     if (!(info = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*info) )))
 284     {
 285         status = STATUS_NO_MEMORY;
 286         goto error;
 287     }
 288
 289     info->pthread_info.teb_size = sigstack_total_size;
 290     if ((status = VIRTUAL_alloc_teb( &addr, info->pthread_info.teb_size, FALSE ))) goto error;
 291     teb = addr;
 292     if ((status = init_teb( teb ))) goto error;
 293
 294     teb->ClientId.UniqueProcess = (HANDLE)GetCurrentProcessId();
 295     teb->ClientId.UniqueThread  = (HANDLE)tid;
 296
 297     /* inherit registers from parent thread */
 298     memcpy( teb->SpareBytes1, ntdll_get_thread_regs(), sizeof(teb->SpareBytes1) );
 299
 300     thread_data = (struct ntdll_thread_data *)teb->SystemReserved2;
 301     thread_data->request_fd  = request_pipe[1];
 302
 303     info->pthread_info.teb_base = teb;
 304     info->pthread_info.teb_sel  = thread_data->teb_sel;
 305
 306     if (!stack_reserve || !stack_commit)
 307     {
 308         IMAGE_NT_HEADERS *nt = RtlImageNtHeader( NtCurrentTeb()->Peb->ImageBaseAddress );
 309         if (!stack_reserve) stack_reserve = nt->OptionalHeader.SizeOfStackReserve;
 310         if (!stack_commit) stack_commit = nt->OptionalHeader.SizeOfStackCommit;
 311     }
 312     if (stack_reserve < stack_commit) stack_reserve = stack_commit;
 313     stack_reserve += page_size;  /* for the guard page */
 314     stack_reserve = (stack_reserve + 0xffff) & ~0xffff;  /* round to 64K boundary */
 315     if (stack_reserve < 1024 * 1024) stack_reserve = 1024 * 1024;  /* Xlib needs a large stack */
 316
 317     info->pthread_info.stack_base = NULL;
 318     info->pthread_info.stack_size = stack_reserve;
 319     info->pthread_info.entry      = start_thread;
 320     info->entry_point             = start;
 321     info->entry_arg               = param;
 322
 323     if (pthread_functions.create_thread( &info->pthread_info ) == -1)
 324     {
 325         status = STATUS_NO_MEMORY;
 326         goto error;
 327     }
 328
 329     if (id) id->UniqueThread = (HANDLE)tid;
 330     if (handle_ptr) *handle_ptr = handle;
 331     else NtClose( handle );
 332
 333     return STATUS_SUCCESS;
 334
 335 error:
 336     if (thread_data) wine_ldt_free_fs( thread_data->teb_sel );
 337     if (addr)
 338     {
 339         SIZE_T size = 0;
 340         NtFreeVirtualMemory( NtCurrentProcess(), &addr, &size, MEM_RELEASE );
 341     }
 342     if (info) RtlFreeHeap( GetProcessHeap(), 0, info );
 343     if (handle) NtClose( handle );
 344     close( request_pipe[1] );
 345     return status;
 346 }
 347
 348
 349 /***********************************************************************
 350  *           RtlExitUserThread  (NTDLL.@)
 351  */
 352 void WINAPI RtlExitUserThread( ULONG status )
 353 {
 354     LdrShutdownThread();
 355     server_exit_thread( status );
 356 }
 357
 358
 359 /***********************************************************************
 360  *              NtOpenThread   (NTDLL.@)
 361  *              ZwOpenThread   (NTDLL.@)
 362  */
 363 NTSTATUS WINAPI NtOpenThread( HANDLE *handle, ACCESS_MASK access,
 364                               const OBJECT_ATTRIBUTES *attr, const CLIENT_ID *id )
 365 {
 366     NTSTATUS ret;
 367
 368     SERVER_START_REQ( open_thread )
 369     {
 370         req->tid        = (thread_id_t)id->UniqueThread;
 371         req->access     = access;
 372         req->attributes = attr ? attr->Attributes : 0;
 373         ret = wine_server_call( req );
 374         *handle = reply->handle;
 375     }
 376     SERVER_END_REQ;
 377     return ret;
 378 }
 379
 380
 381 /******************************************************************************
 382  *              NtSuspendThread   (NTDLL.@)
 383  *              ZwSuspendThread   (NTDLL.@)
 384  */
 385 NTSTATUS WINAPI NtSuspendThread( HANDLE handle, PULONG count )
 386 {
 387     NTSTATUS ret;
 388
 389     SERVER_START_REQ( suspend_thread )
 390     {
 391         req->handle = handle;
 392         if (!(ret = wine_server_call( req ))) *count = reply->count;
 393     }
 394     SERVER_END_REQ;
 395     return ret;
 396 }
 397
 398
 399 /******************************************************************************
 400  *              NtResumeThread   (NTDLL.@)
 401  *              ZwResumeThread   (NTDLL.@)
 402  */
 403 NTSTATUS WINAPI NtResumeThread( HANDLE handle, PULONG count )
 404 {
 405     NTSTATUS ret;
 406
 407     SERVER_START_REQ( resume_thread )
 408     {
 409         req->handle = handle;
 410         if (!(ret = wine_server_call( req ))) *count = reply->count;
 411     }
 412     SERVER_END_REQ;
 413     return ret;
 414 }
 415
 416
 417 /******************************************************************************
 418  *              NtAlertResumeThread   (NTDLL.@)
 419  *              ZwAlertResumeThread   (NTDLL.@)
 420  */
 421 NTSTATUS WINAPI NtAlertResumeThread( HANDLE handle, PULONG count )
 422 {
 423     FIXME( "stub: should alert thread %p\n", handle );
 424     return NtResumeThread( handle, count );
 425 }
 426
 427
 428 /******************************************************************************
 429  *              NtAlertThread   (NTDLL.@)
 430  *              ZwAlertThread   (NTDLL.@)
 431  */
 432 NTSTATUS WINAPI NtAlertThread( HANDLE handle )
 433 {
 434     FIXME( "stub: %p\n", handle );
 435     return STATUS_NOT_IMPLEMENTED;
 436 }
 437
 438
 439 /******************************************************************************
 440  *              NtTerminateThread  (NTDLL.@)
 441  *              ZwTerminateThread  (NTDLL.@)
 442  */
 443 NTSTATUS WINAPI NtTerminateThread( HANDLE handle, LONG exit_code )
 444 {
 445     NTSTATUS ret;
 446     BOOL self, last;
 447
 448     SERVER_START_REQ( terminate_thread )
 449     {
 450         req->handle    = handle;
 451         req->exit_code = exit_code;
 452         ret = wine_server_call( req );
 453         self = !ret && reply->self;
 454         last = reply->last;
 455     }
 456     SERVER_END_REQ;
 457
 458     if (self)
 459     {
 460         if (last) exit( exit_code );
 461         else server_abort_thread( exit_code );
 462     }
 463     return ret;
 464 }
 465
 466
 467 /******************************************************************************
 468  *              NtQueueApcThread  (NTDLL.@)
 469  */
 470 NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1,
 471                                   ULONG_PTR arg2, ULONG_PTR arg3 )
 472 {
 473     NTSTATUS ret;
 474     SERVER_START_REQ( queue_apc )
 475     {
 476         req->handle = handle;
 477         req->user   = 1;
 478         req->func   = func;
 479         req->arg1   = (void *)arg1;
 480         req->arg2   = (void *)arg2;
 481         req->arg3   = (void *)arg3;
 482         ret = wine_server_call( req );
 483     }
 484     SERVER_END_REQ;
 485     return ret;
 486 }
 487
 488
 489 /***********************************************************************
 490  *              NtSetContextThread  (NTDLL.@)
 491  *              ZwSetContextThread  (NTDLL.@)
 492  */
 493 NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
 494 {
 495     NTSTATUS ret;
 496     DWORD dummy, i;
 497     BOOL self = FALSE;
 498
 499 #ifdef __i386__
 500     /* on i386 debug registers always require a server call */
 501     self = (handle == GetCurrentThread());
 502     if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 503     {
 504         struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 505         self = (regs->dr0 == context->Dr0 && regs->dr1 == context->Dr1 &&
 506                 regs->dr2 == context->Dr2 && regs->dr3 == context->Dr3 &&
 507                 regs->dr6 == context->Dr6 && regs->dr7 == context->Dr7);
 508     }
 509 #endif
 510
 511     if (!self)
 512     {
 513         SERVER_START_REQ( set_thread_context )
 514         {
 515             req->handle  = handle;
 516             req->flags   = context->ContextFlags;
 517             req->suspend = 0;
 518             wine_server_add_data( req, context, sizeof(*context) );
 519             ret = wine_server_call( req );
 520             self = reply->self;
 521         }
 522         SERVER_END_REQ;
 523
 524         if (ret == STATUS_PENDING)
 525         {
 526             if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 527             {
 528                 for (i = 0; i < 100; i++)
 529                 {
 530                     SERVER_START_REQ( set_thread_context )
 531                     {
 532                         req->handle  = handle;
 533                         req->flags   = context->ContextFlags;
 534                         req->suspend = 0;
 535                         wine_server_add_data( req, context, sizeof(*context) );
 536                         ret = wine_server_call( req );
 537                     }
 538                     SERVER_END_REQ;
 539                     if (ret != STATUS_PENDING) break;
 540                     NtYieldExecution();
 541                 }
 542                 NtResumeThread( handle, &dummy );
 543             }
 544             if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 545         }
 546
 547         if (ret) return ret;
 548     }
 549
 550     if (self) set_cpu_context( context );
 551     return STATUS_SUCCESS;
 552 }
 553
 554
 555 /* copy a context structure according to the flags */
 556 static inline void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
 557 {
 558 #ifdef __i386__
 559     flags &= ~CONTEXT_i386;  /* get rid of CPU id */
 560     if (flags & CONTEXT_INTEGER)
 561     {
 562         to->Eax = from->Eax;
 563         to->Ebx = from->Ebx;
 564         to->Ecx = from->Ecx;
 565         to->Edx = from->Edx;
 566         to->Esi = from->Esi;
 567         to->Edi = from->Edi;
 568     }
 569     if (flags & CONTEXT_CONTROL)
 570     {
 571         to->Ebp    = from->Ebp;
 572         to->Esp    = from->Esp;
 573         to->Eip    = from->Eip;
 574         to->SegCs  = from->SegCs;
 575         to->SegSs  = from->SegSs;
 576         to->EFlags = from->EFlags;
 577     }
 578     if (flags & CONTEXT_SEGMENTS)
 579     {
 580         to->SegDs = from->SegDs;
 581         to->SegEs = from->SegEs;
 582         to->SegFs = from->SegFs;
 583         to->SegGs = from->SegGs;
 584     }
 585     if (flags & CONTEXT_DEBUG_REGISTERS)
 586     {
 587         to->Dr0 = from->Dr0;
 588         to->Dr1 = from->Dr1;
 589         to->Dr2 = from->Dr2;
 590         to->Dr3 = from->Dr3;
 591         to->Dr6 = from->Dr6;
 592         to->Dr7 = from->Dr7;
 593     }
 594     if (flags & CONTEXT_FLOATING_POINT)
 595     {
 596         to->FloatSave = from->FloatSave;
 597     }
 598 #elif defined(__x86_64__)
 599     flags &= ~CONTEXT_AMD64;  /* get rid of CPU id */
 600     if (flags & CONTEXT_CONTROL)
 601     {
 602         to->Rbp    = from->Rbp;
 603         to->Rip    = from->Rip;
 604         to->Rsp    = from->Rsp;
 605         to->SegCs  = from->SegCs;
 606         to->SegSs  = from->SegSs;
 607         to->EFlags = from->EFlags;
 608         to->MxCsr  = from->MxCsr;
 609     }
 610     if (flags & CONTEXT_INTEGER)
 611     {
 612         to->Rax = from->Rax;
 613         to->Rcx = from->Rcx;
 614         to->Rdx = from->Rdx;
 615         to->Rbx = from->Rbx;
 616         to->Rsi = from->Rsi;
 617         to->Rdi = from->Rdi;
 618         to->R8  = from->R8;
 619         to->R9  = from->R9;
 620         to->R10 = from->R10;
 621         to->R11 = from->R11;
 622         to->R12 = from->R12;
 623         to->R13 = from->R13;
 624         to->R14 = from->R14;
 625         to->R15 = from->R15;
 626     }
 627     if (flags & CONTEXT_SEGMENTS)
 628     {
 629         to->SegDs = from->SegDs;
 630         to->SegEs = from->SegEs;
 631         to->SegFs = from->SegFs;
 632         to->SegGs = from->SegGs;
 633     }
 634     if (flags & CONTEXT_FLOATING_POINT)
 635     {
 636         to->u.FltSave = from->u.FltSave;
 637     }
 638     if (flags & CONTEXT_DEBUG_REGISTERS)
 639     {
 640         to->Dr0 = from->Dr0;
 641         to->Dr1 = from->Dr1;
 642         to->Dr2 = from->Dr2;
 643         to->Dr3 = from->Dr3;
 644         to->Dr6 = from->Dr6;
 645         to->Dr7 = from->Dr7;
 646     }
 647 #elif defined(__sparc__)
 648     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 649     if (flags & CONTEXT_CONTROL)
 650     {
 651         to->psr = from->psr;
 652         to->pc  = from->pc;
 653         to->npc = from->npc;
 654         to->y   = from->y;
 655         to->wim = from->wim;
 656         to->tbr = from->tbr;
 657     }
 658     if (flags & CONTEXT_INTEGER)
 659     {
 660         to->g0 = from->g0;
 661         to->g1 = from->g1;
 662         to->g2 = from->g2;
 663         to->g3 = from->g3;
 664         to->g4 = from->g4;
 665         to->g5 = from->g5;
 666         to->g6 = from->g6;
 667         to->g7 = from->g7;
 668         to->o0 = from->o0;
 669         to->o1 = from->o1;
 670         to->o2 = from->o2;
 671         to->o3 = from->o3;
 672         to->o4 = from->o4;
 673         to->o5 = from->o5;
 674         to->o6 = from->o6;
 675         to->o7 = from->o7;
 676         to->l0 = from->l0;
 677         to->l1 = from->l1;
 678         to->l2 = from->l2;
 679         to->l3 = from->l3;
 680         to->l4 = from->l4;
 681         to->l5 = from->l5;
 682         to->l6 = from->l6;
 683         to->l7 = from->l7;
 684         to->i0 = from->i0;
 685         to->i1 = from->i1;
 686         to->i2 = from->i2;
 687         to->i3 = from->i3;
 688         to->i4 = from->i4;
 689         to->i5 = from->i5;
 690         to->i6 = from->i6;
 691         to->i7 = from->i7;
 692     }
 693     if (flags & CONTEXT_FLOATING_POINT)
 694     {
 695         /* FIXME */
 696     }
 697 #elif defined(__powerpc__)
 698     /* Has no CPU id */
 699     if (flags & CONTEXT_CONTROL)
 700     {
 701         to->Msr = from->Msr;
 702         to->Ctr = from->Ctr;
 703         to->Iar = from->Iar;
 704     }
 705     if (flags & CONTEXT_INTEGER)
 706     {
 707         to->Gpr0  = from->Gpr0;
 708         to->Gpr1  = from->Gpr1;
 709         to->Gpr2  = from->Gpr2;
 710         to->Gpr3  = from->Gpr3;
 711         to->Gpr4  = from->Gpr4;
 712         to->Gpr5  = from->Gpr5;
 713         to->Gpr6  = from->Gpr6;
 714         to->Gpr7  = from->Gpr7;
 715         to->Gpr8  = from->Gpr8;
 716         to->Gpr9  = from->Gpr9;
 717         to->Gpr10 = from->Gpr10;
 718         to->Gpr11 = from->Gpr11;
 719         to->Gpr12 = from->Gpr12;
 720         to->Gpr13 = from->Gpr13;
 721         to->Gpr14 = from->Gpr14;
 722         to->Gpr15 = from->Gpr15;
 723         to->Gpr16 = from->Gpr16;
 724         to->Gpr17 = from->Gpr17;
 725         to->Gpr18 = from->Gpr18;
 726         to->Gpr19 = from->Gpr19;
 727         to->Gpr20 = from->Gpr20;
 728         to->Gpr21 = from->Gpr21;
 729         to->Gpr22 = from->Gpr22;
 730         to->Gpr23 = from->Gpr23;
 731         to->Gpr24 = from->Gpr24;
 732         to->Gpr25 = from->Gpr25;
 733         to->Gpr26 = from->Gpr26;
 734         to->Gpr27 = from->Gpr27;
 735         to->Gpr28 = from->Gpr28;
 736         to->Gpr29 = from->Gpr29;
 737         to->Gpr30 = from->Gpr30;
 738         to->Gpr31 = from->Gpr31;
 739         to->Xer   = from->Xer;
 740         to->Cr    = from->Cr;
 741     }
 742     if (flags & CONTEXT_FLOATING_POINT)
 743     {
 744         to->Fpr0  = from->Fpr0;
 745         to->Fpr1  = from->Fpr1;
 746         to->Fpr2  = from->Fpr2;
 747         to->Fpr3  = from->Fpr3;
 748         to->Fpr4  = from->Fpr4;
 749         to->Fpr5  = from->Fpr5;
 750         to->Fpr6  = from->Fpr6;
 751         to->Fpr7  = from->Fpr7;
 752         to->Fpr8  = from->Fpr8;
 753         to->Fpr9  = from->Fpr9;
 754         to->Fpr10 = from->Fpr10;
 755         to->Fpr11 = from->Fpr11;
 756         to->Fpr12 = from->Fpr12;
 757         to->Fpr13 = from->Fpr13;
 758         to->Fpr14 = from->Fpr14;
 759         to->Fpr15 = from->Fpr15;
 760         to->Fpr16 = from->Fpr16;
 761         to->Fpr17 = from->Fpr17;
 762         to->Fpr18 = from->Fpr18;
 763         to->Fpr19 = from->Fpr19;
 764         to->Fpr20 = from->Fpr20;
 765         to->Fpr21 = from->Fpr21;
 766         to->Fpr22 = from->Fpr22;
 767         to->Fpr23 = from->Fpr23;
 768         to->Fpr24 = from->Fpr24;
 769         to->Fpr25 = from->Fpr25;
 770         to->Fpr26 = from->Fpr26;
 771         to->Fpr27 = from->Fpr27;
 772         to->Fpr28 = from->Fpr28;
 773         to->Fpr29 = from->Fpr29;
 774         to->Fpr30 = from->Fpr30;
 775         to->Fpr31 = from->Fpr31;
 776         to->Fpscr = from->Fpscr;
 777     }
 778 #else
 779 #error You must implement context copying for your CPU
 780 #endif
 781 }
 782
 783
 784 /***********************************************************************
 785  *              NtGetContextThread  (NTDLL.@)
 786  *              ZwGetContextThread  (NTDLL.@)
 787  */
 788 NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
 789 {
 790     NTSTATUS ret;
 791     CONTEXT ctx;
 792     DWORD dummy, i;
 793     BOOL self = FALSE;
 794
 795     SERVER_START_REQ( get_thread_context )
 796     {
 797         req->handle  = handle;
 798         req->flags   = context->ContextFlags;
 799         req->suspend = 0;
 800         wine_server_set_reply( req, &ctx, sizeof(ctx) );
 801         ret = wine_server_call( req );
 802         self = reply->self;
 803     }
 804     SERVER_END_REQ;
 805
 806     if (ret == STATUS_PENDING)
 807     {
 808         if (NtSuspendThread( handle, &dummy ) == STATUS_SUCCESS)
 809         {
 810             for (i = 0; i < 100; i++)
 811             {
 812                 SERVER_START_REQ( get_thread_context )
 813                 {
 814                     req->handle  = handle;
 815                     req->flags   = context->ContextFlags;
 816                     req->suspend = 0;
 817                     wine_server_set_reply( req, &ctx, sizeof(ctx) );
 818                     ret = wine_server_call( req );
 819                 }
 820                 SERVER_END_REQ;
 821                 if (ret != STATUS_PENDING) break;
 822                 NtYieldExecution();
 823             }
 824             NtResumeThread( handle, &dummy );
 825         }
 826     }
 827
 828     if (ret == STATUS_SUCCESS)
 829     {
 830         copy_context( context, &ctx, context->ContextFlags );
 831 #ifdef __i386__
 832         /* update the cached version of the debug registers */
 833         if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_i386)))
 834         {
 835             struct ntdll_thread_regs * const regs = ntdll_get_thread_regs();
 836             regs->dr0 = context->Dr0;
 837             regs->dr1 = context->Dr1;
 838             regs->dr2 = context->Dr2;
 839             regs->dr3 = context->Dr3;
 840             regs->dr6 = context->Dr6;
 841             regs->dr7 = context->Dr7;
 842         }
 843 #endif
 844     }
 845     else if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED;
 846     return ret;
 847 }
 848
 849
 850 /******************************************************************************
 851  *              NtQueryInformationThread  (NTDLL.@)
 852  *              ZwQueryInformationThread  (NTDLL.@)
 853  */
 854 NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
 855                                           void *data, ULONG length, ULONG *ret_len )
 856 {
 857     NTSTATUS status;
 858
 859     switch(class)
 860     {
 861     case ThreadBasicInformation:
 862         {
 863             THREAD_BASIC_INFORMATION info;
 864
 865             SERVER_START_REQ( get_thread_info )
 866             {
 867                 req->handle = handle;
 868                 req->tid_in = 0;
 869                 if (!(status = wine_server_call( req )))
 870                 {
 871                     info.ExitStatus             = reply->exit_code;
 872                     info.TebBaseAddress         = reply->teb;
 873                     info.ClientId.UniqueProcess = (HANDLE)reply->pid;
 874                     info.ClientId.UniqueThread  = (HANDLE)reply->tid;
 875                     info.AffinityMask           = reply->affinity;
 876                     info.Priority               = reply->priority;
 877                     info.BasePriority           = reply->priority;  /* FIXME */
 878                 }
 879             }
 880             SERVER_END_REQ;
 881             if (status == STATUS_SUCCESS)
 882             {
 883                 if (data) memcpy( data, &info, min( length, sizeof(info) ));
 884                 if (ret_len) *ret_len = min( length, sizeof(info) );
 885             }
 886         }
 887         return status;
 888     case ThreadTimes:
 889         {
 890             KERNEL_USER_TIMES   kusrt;
 891             /* We need to do a server call to get the creation time or exit time */
 892             /* This works on any thread */
 893             SERVER_START_REQ( get_thread_info )
 894             {
 895                 req->handle = handle;
 896                 req->tid_in = 0;
 897                 status = wine_server_call( req );
 898                 if (status == STATUS_SUCCESS)
 899                 {
 900                     RtlSecondsSince1970ToTime( reply->creation_time, &kusrt.CreateTime );
 901                     RtlSecondsSince1970ToTime( reply->exit_time, &kusrt.ExitTime );
 902                 }
 903             }
 904             SERVER_END_REQ;
 905             if (status == STATUS_SUCCESS)
 906             {
 907                 /* We call times(2) for kernel time or user time */
 908                 /* We can only (portably) do this for the current thread */
 909                 if (handle == GetCurrentThread())
 910                 {
 911                     struct tms time_buf;
 912                     long clocks_per_sec = sysconf(_SC_CLK_TCK);
 913
 914                     times(&time_buf);
 915                     kusrt.KernelTime.QuadPart = (ULONGLONG)time_buf.tms_stime * 10000000 / clocks_per_sec;
 916                     kusrt.UserTime.QuadPart = (ULONGLONG)time_buf.tms_utime * 10000000 / clocks_per_sec;
 917                 }
 918                 else
 919                 {
 920                     kusrt.KernelTime.QuadPart = 0;
 921                     kusrt.UserTime.QuadPart = 0;
 922                     FIXME("Cannot get kerneltime or usertime of other threads\n");
 923                 }
 924                 if (data) memcpy( data, &kusrt, min( length, sizeof(kusrt) ));
 925                 if (ret_len) *ret_len = min( length, sizeof(kusrt) );
 926             }
 927         }
 928         return status;
 929     case ThreadPriority:
 930     case ThreadBasePriority:
 931     case ThreadAffinityMask:
 932     case ThreadImpersonationToken:
 933     case ThreadDescriptorTableEntry:
 934     case ThreadEnableAlignmentFaultFixup:
 935     case ThreadEventPair_Reusable:
 936     case ThreadQuerySetWin32StartAddress:
 937     case ThreadZeroTlsCell:
 938     case ThreadPerformanceCount:
 939     case ThreadAmILastThread:
 940     case ThreadIdealProcessor:
 941     case ThreadPriorityBoost:
 942     case ThreadSetTlsArrayAddress:
 943     case ThreadIsIoPending:
 944     default:
 945         FIXME( "info class %d not supported yet\n", class );
 946         return STATUS_NOT_IMPLEMENTED;
 947     }
 948 }
 949
 950
 951 /******************************************************************************
 952  *              NtSetInformationThread  (NTDLL.@)
 953  *              ZwSetInformationThread  (NTDLL.@)
 954  */
 955 NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
 956                                         LPCVOID data, ULONG length )
 957 {
 958     NTSTATUS status;
 959     switch(class)
 960     {
 961     case ThreadZeroTlsCell:
 962         if (handle == GetCurrentThread())
 963         {
 964             LIST_ENTRY *entry;
 965             DWORD index;
 966
 967             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
 968             index = *(const DWORD *)data;
 969             if (index < TLS_MINIMUM_AVAILABLE)
 970             {
 971                 RtlAcquirePebLock();
 972                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 973                 {
 974                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 975                     teb->TlsSlots[index] = 0;
 976                 }
 977                 RtlReleasePebLock();
 978             }
 979             else
 980             {
 981                 index -= TLS_MINIMUM_AVAILABLE;
 982                 if (index >= 8 * sizeof(NtCurrentTeb()->Peb->TlsExpansionBitmapBits))
 983                     return STATUS_INVALID_PARAMETER;
 984                 RtlAcquirePebLock();
 985                 for (entry = tls_links.Flink; entry != &tls_links; entry = entry->Flink)
 986                 {
 987                     TEB *teb = CONTAINING_RECORD(entry, TEB, TlsLinks);
 988                     if (teb->TlsExpansionSlots) teb->TlsExpansionSlots[index] = 0;
 989                 }
 990                 RtlReleasePebLock();
 991             }
 992             return STATUS_SUCCESS;
 993         }
 994         FIXME( "ZeroTlsCell not supported on other threads\n" );
 995         return STATUS_NOT_IMPLEMENTED;
 996
 997     case ThreadImpersonationToken:
 998         {
 999             const HANDLE *phToken = data;
1000             if (length != sizeof(HANDLE)) return STATUS_INVALID_PARAMETER;
1001             TRACE("Setting ThreadImpersonationToken handle to %p\n", *phToken );
1002             SERVER_START_REQ( set_thread_info )
1003             {
1004                 req->handle   = handle;
1005                 req->token    = *phToken;
1006                 req->mask     = SET_THREAD_INFO_TOKEN;
1007                 status = wine_server_call( req );
1008             }
1009             SERVER_END_REQ;
1010         }
1011         return status;
1012     case ThreadBasePriority:
1013         {
1014             const DWORD *pprio = data;
1015             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1016             SERVER_START_REQ( set_thread_info )
1017             {
1018                 req->handle   = handle;
1019                 req->priority = *pprio;
1020                 req->mask     = SET_THREAD_INFO_PRIORITY;
1021                 status = wine_server_call( req );
1022             }
1023             SERVER_END_REQ;
1024         }
1025         return status;
1026     case ThreadAffinityMask:
1027         {
1028             const DWORD *paff = data;
1029             if (length != sizeof(DWORD)) return STATUS_INVALID_PARAMETER;
1030             SERVER_START_REQ( set_thread_info )
1031             {
1032                 req->handle   = handle;
1033                 req->affinity = *paff;
1034                 req->mask     = SET_THREAD_INFO_AFFINITY;
1035                 status = wine_server_call( req );
1036             }
1037             SERVER_END_REQ;
1038         }
1039         return status;
1040     case ThreadBasicInformation:
1041     case ThreadTimes:
1042     case ThreadPriority:
1043     case ThreadDescriptorTableEntry:
1044     case ThreadEnableAlignmentFaultFixup:
1045     case ThreadEventPair_Reusable:
1046     case ThreadQuerySetWin32StartAddress:
1047     case ThreadPerformanceCount:
1048     case ThreadAmILastThread:
1049     case ThreadIdealProcessor:
1050     case ThreadPriorityBoost:
1051     case ThreadSetTlsArrayAddress:
1052     case ThreadIsIoPending:
1053     default:
1054         FIXME( "info class %d not supported yet\n", class );
1055         return STATUS_NOT_IMPLEMENTED;
1056     }
1057 }
1058
1059
1060 /**********************************************************************
1061  *           NtCurrentTeb   (NTDLL.@)
1062  */
1063 #if defined(__i386__) && defined(__GNUC__)
1064
1065 __ASM_GLOBAL_FUNC( NtCurrentTeb, ".byte 0x64\n\tmovl 0x18,%eax\n\tret" );
1066
1067 #elif defined(__i386__) && defined(_MSC_VER)
1068
1069 /* Nothing needs to be done. MS C "magically" exports the inline version from winnt.h */
1070
1071 #else
1072
1073 /**********************************************************************/
1074
1075 TEB * WINAPI NtCurrentTeb(void)
1076 {
1077     return pthread_functions.get_current_teb();
1078 }
1079
1080 #endif  /* __i386__ */