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

   1 /*
   2  * NT basis DLL
   3  *
   4  * This file contains the Rtl* API functions. These should be implementable.
   5  *
   6  * Copyright 1996-1998 Marcus Meissner
   7  * Copyright 1999      Alex Korobka
   8  * Copyright 2003      Thomas Mertes
   9  * Crc32 code Copyright 1986 Gary S. Brown (Public domain)
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include "config.h"
  27 #include "wine/port.h"
  28
  29 #include <stdlib.h>
  30 #include <stdarg.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include "ntstatus.h"
  34 #define NONAMELESSSTRUCT
  35 #define WIN32_NO_STATUS
  36 #include "windef.h"
  37 #include "winternl.h"
  38 #include "wine/debug.h"
  39 #include "wine/exception.h"
  40 #include "ntdll_misc.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  43
  44 static RTL_CRITICAL_SECTION peb_lock;
  45 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  46 {
  47     0, 0, &peb_lock,
  48     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  49       0, 0, { (DWORD_PTR)(__FILE__ ": peb_lock") }
  50 };
  51 static RTL_CRITICAL_SECTION peb_lock = { &critsect_debug, -1, 0, 0, 0, 0 };
  52
  53 /* CRC polynomial 0xedb88320 */
  54 static const DWORD CRC_table[256] =
  55 {
  56     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
  57     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  58     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
  59     0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  60     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
  61     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  62     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
  63     0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  64     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
  65     0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  66     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
  67     0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  68     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
  69     0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  70     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
  71     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  72     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
  73     0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  74     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
  75     0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  76     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
  77     0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  78     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
  79     0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  80     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
  81     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  82     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
  83     0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  84     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
  85     0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  86     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
  87     0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  88     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
  89     0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  90     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
  91     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  92     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
  93     0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  94     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
  95     0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  96     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
  97     0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  98     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
  99 };
 100
 101 /*
 102  *      resource functions
 103  */
 104
 105 /***********************************************************************
 106  *           RtlInitializeResource      (NTDLL.@)
 107  *
 108  * xxxResource() functions implement multiple-reader-single-writer lock.
 109  * The code is based on information published in WDJ January 1999 issue.
 110  */
 111 void WINAPI RtlInitializeResource(LPRTL_RWLOCK rwl)
 112 {
 113     if( rwl )
 114     {
 115         rwl->iNumberActive = 0;
 116         rwl->uExclusiveWaiters = 0;
 117         rwl->uSharedWaiters = 0;
 118         rwl->hOwningThreadId = 0;
 119         rwl->dwTimeoutBoost = 0; /* no info on this one, default value is 0 */
 120         RtlInitializeCriticalSection( &rwl->rtlCS );
 121         rwl->rtlCS.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": RTL_RWLOCK.rtlCS");
 122         NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 123         NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 124     }
 125 }
 126
 127
 128 /***********************************************************************
 129  *           RtlDeleteResource          (NTDLL.@)
 130  */
 131 void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
 132 {
 133     if( rwl )
 134     {
 135         RtlEnterCriticalSection( &rwl->rtlCS );
 136         if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
 137             MESSAGE("Deleting active MRSW lock (%p), expect failure\n", rwl );
 138         rwl->hOwningThreadId = 0;
 139         rwl->uExclusiveWaiters = rwl->uSharedWaiters = 0;
 140         rwl->iNumberActive = 0;
 141         NtClose( rwl->hExclusiveReleaseSemaphore );
 142         NtClose( rwl->hSharedReleaseSemaphore );
 143         RtlLeaveCriticalSection( &rwl->rtlCS );
 144         rwl->rtlCS.DebugInfo->Spare[0] = 0;
 145         RtlDeleteCriticalSection( &rwl->rtlCS );
 146     }
 147 }
 148
 149
 150 /***********************************************************************
 151  *          RtlAcquireResourceExclusive (NTDLL.@)
 152  */
 153 BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl, BYTE fWait)
 154 {
 155     BYTE retVal = 0;
 156     if( !rwl ) return 0;
 157
 158 start:
 159     RtlEnterCriticalSection( &rwl->rtlCS );
 160     if( rwl->iNumberActive == 0 ) /* lock is free */
 161     {
 162         rwl->iNumberActive = -1;
 163         retVal = 1;
 164     }
 165     else if( rwl->iNumberActive < 0 ) /* exclusive lock in progress */
 166     {
 167          if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 168          {
 169              retVal = 1;
 170              rwl->iNumberActive--;
 171              goto done;
 172          }
 173 wait:
 174          if( fWait )
 175          {
 176              NTSTATUS status;
 177
 178              rwl->uExclusiveWaiters++;
 179
 180              RtlLeaveCriticalSection( &rwl->rtlCS );
 181              status = NtWaitForSingleObject( rwl->hExclusiveReleaseSemaphore, FALSE, NULL );
 182              if( HIWORD(status) )
 183                  goto done;
 184              goto start; /* restart the acquisition to avoid deadlocks */
 185          }
 186     }
 187     else  /* one or more shared locks are in progress */
 188          if( fWait )
 189              goto wait;
 190
 191     if( retVal == 1 )
 192         rwl->hOwningThreadId = ULongToHandle(GetCurrentThreadId());
 193 done:
 194     RtlLeaveCriticalSection( &rwl->rtlCS );
 195     return retVal;
 196 }
 197
 198 /***********************************************************************
 199  *          RtlAcquireResourceShared    (NTDLL.@)
 200  */
 201 BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
 202 {
 203     NTSTATUS status = STATUS_UNSUCCESSFUL;
 204     BYTE retVal = 0;
 205     if( !rwl ) return 0;
 206
 207 start:
 208     RtlEnterCriticalSection( &rwl->rtlCS );
 209     if( rwl->iNumberActive < 0 )
 210     {
 211         if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 212         {
 213             rwl->iNumberActive--;
 214             retVal = 1;
 215             goto done;
 216         }
 217
 218         if( fWait )
 219         {
 220             rwl->uSharedWaiters++;
 221             RtlLeaveCriticalSection( &rwl->rtlCS );
 222             status = NtWaitForSingleObject( rwl->hSharedReleaseSemaphore, FALSE, NULL );
 223             if( HIWORD(status) )
 224                 goto done;
 225             goto start;
 226         }
 227     }
 228     else
 229     {
 230         if( status != STATUS_WAIT_0 ) /* otherwise RtlReleaseResource() has already done it */
 231             rwl->iNumberActive++;
 232         retVal = 1;
 233     }
 234 done:
 235     RtlLeaveCriticalSection( &rwl->rtlCS );
 236     return retVal;
 237 }
 238
 239
 240 /***********************************************************************
 241  *           RtlReleaseResource         (NTDLL.@)
 242  */
 243 void WINAPI RtlReleaseResource(LPRTL_RWLOCK rwl)
 244 {
 245     RtlEnterCriticalSection( &rwl->rtlCS );
 246
 247     if( rwl->iNumberActive > 0 ) /* have one or more readers */
 248     {
 249         if( --rwl->iNumberActive == 0 )
 250         {
 251             if( rwl->uExclusiveWaiters )
 252             {
 253 wake_exclusive:
 254                 rwl->uExclusiveWaiters--;
 255                 NtReleaseSemaphore( rwl->hExclusiveReleaseSemaphore, 1, NULL );
 256             }
 257         }
 258     }
 259     else
 260     if( rwl->iNumberActive < 0 ) /* have a writer, possibly recursive */
 261     {
 262         if( ++rwl->iNumberActive == 0 )
 263         {
 264             rwl->hOwningThreadId = 0;
 265             if( rwl->uExclusiveWaiters )
 266                 goto wake_exclusive;
 267             else
 268                 if( rwl->uSharedWaiters )
 269                 {
 270                     UINT n = rwl->uSharedWaiters;
 271                     rwl->iNumberActive = rwl->uSharedWaiters; /* prevent new writers from joining until
 272                                                                * all queued readers have done their thing */
 273                     rwl->uSharedWaiters = 0;
 274                     NtReleaseSemaphore( rwl->hSharedReleaseSemaphore, n, NULL );
 275                 }
 276         }
 277     }
 278     RtlLeaveCriticalSection( &rwl->rtlCS );
 279 }
 280
 281
 282 /***********************************************************************
 283  *           RtlDumpResource            (NTDLL.@)
 284  */
 285 void WINAPI RtlDumpResource(LPRTL_RWLOCK rwl)
 286 {
 287     if( rwl )
 288     {
 289         MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
 290                 rwl, rwl->iNumberActive, rwl->uSharedWaiters, rwl->uExclusiveWaiters );
 291         if( rwl->iNumberActive )
 292             MESSAGE("\towner thread = %p\n", rwl->hOwningThreadId );
 293     }
 294 }
 295
 296 /*
 297  *      misc functions
 298  */
 299
 300 /******************************************************************************
 301  *      DbgPrint        [NTDLL.@]
 302  */
 303 NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...)
 304 {
 305   char buf[512];
 306   __ms_va_list args;
 307
 308   __ms_va_start(args, fmt);
 309   NTDLL__vsnprintf(buf, sizeof(buf), fmt, args);
 310   __ms_va_end(args);
 311
 312   MESSAGE("DbgPrint says: %s",buf);
 313   /* hmm, raise exception? */
 314   return STATUS_SUCCESS;
 315 }
 316
 317
 318 /******************************************************************************
 319  *      DbgPrintEx      [NTDLL.@]
 320  */
 321 NTSTATUS WINAPIV DbgPrintEx(ULONG iComponentId, ULONG Level, LPCSTR fmt, ...)
 322 {
 323     NTSTATUS ret;
 324     __ms_va_list args;
 325
 326     __ms_va_start(args, fmt);
 327     ret = vDbgPrintEx(iComponentId, Level, fmt, args);
 328     __ms_va_end(args);
 329     return ret;
 330 }
 331
 332 /******************************************************************************
 333  *      vDbgPrintEx     [NTDLL.@]
 334  */
 335 NTSTATUS WINAPI vDbgPrintEx( ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
 336 {
 337     return vDbgPrintExWithPrefix( "", id, level, fmt, args );
 338 }
 339
 340 /******************************************************************************
 341  *      vDbgPrintExWithPrefix  [NTDLL.@]
 342  */
 343 NTSTATUS WINAPI vDbgPrintExWithPrefix( LPCSTR prefix, ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
 344 {
 345     char buf[1024];
 346
 347     NTDLL__vsnprintf(buf, sizeof(buf), fmt, args);
 348
 349     switch (level & DPFLTR_MASK)
 350     {
 351     case DPFLTR_ERROR_LEVEL:   ERR("%s%x: %s", prefix, id, buf); break;
 352     case DPFLTR_WARNING_LEVEL: WARN("%s%x: %s", prefix, id, buf); break;
 353     case DPFLTR_TRACE_LEVEL:
 354     case DPFLTR_INFO_LEVEL:
 355     default:                   TRACE("%s%x: %s", prefix, id, buf); break;
 356     }
 357     return STATUS_SUCCESS;
 358 }
 359
 360 /******************************************************************************
 361  *  RtlAcquirePebLock           [NTDLL.@]
 362  */
 363 VOID WINAPI RtlAcquirePebLock(void)
 364 {
 365     RtlEnterCriticalSection( &peb_lock );
 366 }
 367
 368 /******************************************************************************
 369  *  RtlReleasePebLock           [NTDLL.@]
 370  */
 371 VOID WINAPI RtlReleasePebLock(void)
 372 {
 373     RtlLeaveCriticalSection( &peb_lock );
 374 }
 375
 376 /******************************************************************************
 377  *  RtlNewSecurityObject                [NTDLL.@]
 378  */
 379 NTSTATUS WINAPI
 380 RtlNewSecurityObject( PSECURITY_DESCRIPTOR ParentDescriptor,
 381                       PSECURITY_DESCRIPTOR CreatorDescriptor,
 382                       PSECURITY_DESCRIPTOR *NewDescriptor,
 383                       BOOLEAN IsDirectoryObject,
 384                       HANDLE Token,
 385                       PGENERIC_MAPPING GenericMapping )
 386 {
 387     FIXME("(%p %p %p %d %p %p) stub!\n", ParentDescriptor, CreatorDescriptor,
 388           NewDescriptor, IsDirectoryObject, Token, GenericMapping);
 389     return STATUS_NOT_IMPLEMENTED;
 390 }
 391
 392 /******************************************************************************
 393  *  RtlDeleteSecurityObject             [NTDLL.@]
 394  */
 395 NTSTATUS WINAPI
 396 RtlDeleteSecurityObject( PSECURITY_DESCRIPTOR *ObjectDescriptor )
 397 {
 398     FIXME("(%p) stub!\n", ObjectDescriptor);
 399     return STATUS_NOT_IMPLEMENTED;
 400 }
 401
 402 /**************************************************************************
 403  *                 _chkstk                              [NTDLL.@]
 404  *
 405  * Glorified "enter xxxx".
 406  */
 407 #ifdef __i386__
 408 __ASM_STDCALL_FUNC( _chkstk, 0,
 409                    "negl %eax\n\t"
 410                    "addl %esp,%eax\n\t"
 411                    "xchgl %esp,%eax\n\t"
 412                    "movl 0(%eax),%eax\n\t"  /* copy return address from old location */
 413                    "movl %eax,0(%esp)\n\t"
 414                    "ret" )
 415 #endif
 416
 417 /**************************************************************************
 418  *                 _alloca_probe                        [NTDLL.@]
 419  *
 420  * Glorified "enter xxxx".
 421  */
 422 #ifdef __i386__
 423 __ASM_STDCALL_FUNC( _alloca_probe, 0,
 424                    "negl %eax\n\t"
 425                    "addl %esp,%eax\n\t"
 426                    "xchgl %esp,%eax\n\t"
 427                    "movl 0(%eax),%eax\n\t"  /* copy return address from old location */
 428                    "movl %eax,0(%esp)\n\t"
 429                    "ret" )
 430 #endif
 431
 432
 433 /******************************************************************************
 434  *  RtlInitializeGenericTable           [NTDLL.@]
 435  */
 436 PVOID WINAPI RtlInitializeGenericTable(PVOID pTable, PVOID arg2, PVOID arg3, PVOID arg4, PVOID arg5)
 437 {
 438   FIXME("(%p,%p,%p,%p,%p) stub!\n", pTable, arg2, arg3, arg4, arg5);
 439   return NULL;
 440 }
 441
 442 /******************************************************************************
 443  *  RtlEnumerateGenericTableWithoutSplaying           [NTDLL.@]
 444  */
 445 PVOID RtlEnumerateGenericTableWithoutSplaying(PVOID pTable, PVOID *RestartKey)
 446 {
 447     FIXME("(%p,%p) stub!\n", pTable, RestartKey);
 448     return NULL;
 449 }
 450
 451 /******************************************************************************
 452  *  RtlNumberGenericTableElements           [NTDLL.@]
 453  */
 454 ULONG RtlNumberGenericTableElements(PVOID pTable)
 455 {
 456     FIXME("(%p) stub!\n", pTable);
 457     return 0;
 458 }
 459
 460 /******************************************************************************
 461  *  RtlMoveMemory   [NTDLL.@]
 462  *
 463  * Move a block of memory that may overlap.
 464  *
 465  * PARAMS
 466  *  Destination [O] End destination for block
 467  *  Source      [O] Where to start copying from
 468  *  Length      [I] Number of bytes to copy
 469  *
 470  * RETURNS
 471  *  Nothing.
 472  */
 473 #undef RtlMoveMemory
 474 VOID WINAPI RtlMoveMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length )
 475 {
 476     memmove(Destination, Source, Length);
 477 }
 478
 479 /******************************************************************************
 480  *  RtlFillMemory   [NTDLL.@]
 481  *
 482  * Set a block of memory with a value.
 483  *
 484  * PARAMS
 485  *  Destination [O] Block to fill
 486  *  Length      [I] Number of bytes to fill
 487  *  Fill        [I] Value to set
 488  *
 489  * RETURNS
 490  *  Nothing.
 491  */
 492 #undef RtlFillMemory
 493 VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
 494 {
 495     memset(Destination, Fill, Length);
 496 }
 497
 498 /******************************************************************************
 499  *  RtlZeroMemory   [NTDLL.@]
 500  *
 501  * Set a block of memory with 0's.
 502  *
 503  * PARAMS
 504  *  Destination [O] Block to fill
 505  *  Length      [I] Number of bytes to fill
 506  *
 507  * RETURNS
 508  *  Nothing.
 509  */
 510 #undef RtlZeroMemory
 511 VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
 512 {
 513     memset(Destination, 0, Length);
 514 }
 515
 516 /******************************************************************************
 517  *  RtlCompareMemory   [NTDLL.@]
 518  *
 519  * Compare one block of memory with another
 520  *
 521  * PARAMS
 522  *  Source1 [I] Source block
 523  *  Source2 [I] Block to compare to Source1
 524  *  Length  [I] Number of bytes to compare
 525  *
 526  * RETURNS
 527  *  The length of the first byte at which Source1 and Source2 differ, or Length
 528  *  if they are the same.
 529  */
 530 SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
 531 {
 532     SIZE_T i;
 533     for(i=0; (i<Length) && (((const BYTE*)Source1)[i]==((const BYTE*)Source2)[i]); i++);
 534     return i;
 535 }
 536
 537 /******************************************************************************
 538  *  RtlCompareMemoryUlong   [NTDLL.@]
 539  *
 540  * Compare a block of memory with a value, a ULONG at a time
 541  *
 542  * PARAMS
 543  *  Source1 [I] Source block. This must be ULONG aligned
 544  *  Length  [I] Number of bytes to compare. This should be a multiple of 4
 545  *  dwVal   [I] Value to compare to
 546  *
 547  * RETURNS
 548  *  The byte position of the first byte at which Source1 is not dwVal.
 549  */
 550 SIZE_T WINAPI RtlCompareMemoryUlong(const ULONG *Source1, SIZE_T Length, ULONG dwVal)
 551 {
 552     SIZE_T i;
 553     for(i = 0; i < Length/sizeof(ULONG) && Source1[i] == dwVal; i++);
 554     return i * sizeof(ULONG);
 555 }
 556
 557 /******************************************************************************
 558  *  RtlAssert                           [NTDLL.@]
 559  *
 560  * Fail a debug assertion.
 561  *
 562  * RETURNS
 563  *  Nothing. This call does not return control to its caller.
 564  *
 565  * NOTES
 566  * Not implemented in non-debug versions.
 567  */
 568 void WINAPI RtlAssert(LPVOID x1,LPVOID x2,DWORD x3, DWORD x4)
 569 {
 570         FIXME("(%p,%p,0x%08x,0x%08x),stub\n",x1,x2,x3,x4);
 571 }
 572
 573 /*************************************************************************
 574  * RtlFillMemoryUlong   [NTDLL.@]
 575  *
 576  * Fill memory with a 32 bit (dword) value.
 577  *
 578  * PARAMS
 579  *  lpDest  [I] Bitmap pointer
 580  *  ulCount [I] Number of dwords to write
 581  *  ulValue [I] Value to fill with
 582  *
 583  * RETURNS
 584  *  Nothing.
 585  */
 586 VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
 587 {
 588   TRACE("(%p,%d,%d)\n", lpDest, ulCount, ulValue);
 589
 590   ulCount /= sizeof(ULONG);
 591   while(ulCount--)
 592     *lpDest++ = ulValue;
 593 }
 594
 595 /*********************************************************************
 596  *                  RtlComputeCrc32   [NTDLL.@]
 597  *
 598  * Calculate the CRC32 checksum of a block of bytes
 599  *
 600  * PARAMS
 601  *  dwInitial [I] Initial CRC value
 602  *  pData     [I] Data block
 603  *  iLen      [I] Length of the byte block
 604  *
 605  * RETURNS
 606  *  The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
 607  */
 608 DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, const BYTE *pData, INT iLen)
 609 {
 610   DWORD crc = ~dwInitial;
 611
 612   TRACE("(%d,%p,%d)\n", dwInitial, pData, iLen);
 613
 614   while (iLen > 0)
 615   {
 616     crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
 617     pData++;
 618     iLen--;
 619   }
 620   return ~crc;
 621 }
 622
 623
 624 /*************************************************************************
 625  * RtlUlonglongByteSwap    [NTDLL.@]
 626  *
 627  * Swap the bytes of an unsigned long long value.
 628  *
 629  * PARAMS
 630  *  i [I] Value to swap bytes of
 631  *
 632  * RETURNS
 633  *  The value with its bytes swapped.
 634  */
 635 ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG i)
 636 {
 637   return ((ULONGLONG)RtlUlongByteSwap(i) << 32) | RtlUlongByteSwap(i>>32);
 638 }
 639
 640 /*************************************************************************
 641  * RtlUlongByteSwap    [NTDLL.@]
 642  *
 643  * Swap the bytes of an unsigned int value.
 644  *
 645  * NOTES
 646  *  ix86 version takes argument in %ecx. Other systems use the inline version.
 647  */
 648 #ifdef __i386__
 649 __ASM_GLOBAL_FUNC(NTDLL_RtlUlongByteSwap,
 650                   "movl %ecx,%eax\n\t"
 651                   "bswap %eax\n\t"
 652                   "ret")
 653 #endif
 654
 655 /*************************************************************************
 656  * RtlUshortByteSwap    [NTDLL.@]
 657  *
 658  * Swap the bytes of an unsigned short value.
 659  *
 660  * NOTES
 661  *  i386 version takes argument in %cx. Other systems use the inline version.
 662  */
 663 #ifdef __i386__
 664 __ASM_GLOBAL_FUNC(NTDLL_RtlUshortByteSwap,
 665                   "movb %ch,%al\n\t"
 666                   "movb %cl,%ah\n\t"
 667                   "ret")
 668 #endif
 669
 670
 671 /*************************************************************************
 672  * RtlUniform   [NTDLL.@]
 673  *
 674  * Generates an uniform random number
 675  *
 676  * PARAMS
 677  *  seed [O] The seed of the Random function
 678  *
 679  * RETURNS
 680  *  It returns a random number uniformly distributed over [0..MAXLONG-1].
 681  *
 682  * NOTES
 683  *  Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
 684  *  In our case the algorithm is:
 685  *
 686  *|  result = (*seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
 687  *|
 688  *|  *seed = result;
 689  *
 690  * DIFFERENCES
 691  *  The native documentation states that the random number is
 692  *  uniformly distributed over [0..MAXLONG]. In reality the native
 693  *  function and our function return a random number uniformly
 694  *  distributed over [0..MAXLONG-1].
 695  */
 696 ULONG WINAPI RtlUniform (PULONG seed)
 697 {
 698     ULONG result;
 699
 700    /*
 701     * Instead of the algorithm stated above, we use the algorithm
 702     * below, which is totally equivalent (see the tests), but does
 703     * not use a division and therefore is faster.
 704     */
 705     result = *seed * 0xffffffed + 0x7fffffc3;
 706     if (result == 0xffffffff || result == 0x7ffffffe) {
 707         result = (result + 2) & MAXLONG;
 708     } else if (result == 0x7fffffff) {
 709         result = 0;
 710     } else if ((result & 0x80000000) == 0) {
 711         result = result + (~result & 1);
 712     } else {
 713         result = (result + (result & 1)) & MAXLONG;
 714     } /* if */
 715     *seed = result;
 716     return result;
 717 }
 718
 719
 720 /*************************************************************************
 721  * RtlRandom   [NTDLL.@]
 722  *
 723  * Generates a random number
 724  *
 725  * PARAMS
 726  *  seed [O] The seed of the Random function
 727  *
 728  * RETURNS
 729  *  It returns a random number distributed over [0..MAXLONG-1].
 730  */
 731 ULONG WINAPI RtlRandom (PULONG seed)
 732 {
 733     static ULONG saved_value[128] =
 734     { /*   0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
 735       /*   8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
 736       /*  16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
 737       /*  24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
 738       /*  32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
 739       /*  40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
 740       /*  48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
 741       /*  56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
 742       /*  64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
 743       /*  72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
 744       /*  80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
 745       /*  88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
 746       /*  96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
 747       /* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
 748       /* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
 749       /* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
 750     ULONG rand;
 751     int pos;
 752     ULONG result;
 753
 754     rand = (*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 755     *seed = (rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 756     pos = *seed & 0x7f;
 757     result = saved_value[pos];
 758     saved_value[pos] = rand;
 759     return(result);
 760 }
 761
 762
 763 /*************************************************************************
 764  * RtlAreAllAccessesGranted   [NTDLL.@]
 765  *
 766  * Check if all desired accesses are granted
 767  *
 768  * RETURNS
 769  *  TRUE: All desired accesses are granted
 770  *  FALSE: Otherwise
 771  */
 772 BOOLEAN WINAPI RtlAreAllAccessesGranted(
 773     ACCESS_MASK GrantedAccess,
 774     ACCESS_MASK DesiredAccess)
 775 {
 776     return (GrantedAccess & DesiredAccess) == DesiredAccess;
 777 }
 778
 779
 780 /*************************************************************************
 781  * RtlAreAnyAccessesGranted   [NTDLL.@]
 782  *
 783  * Check if at least one of the desired accesses is granted
 784  *
 785  * PARAMS
 786  *  GrantedAccess [I] Access mask of granted accesses
 787  *  DesiredAccess [I] Access mask of desired accesses
 788  *
 789  * RETURNS
 790  *  TRUE: At least one of the desired accesses is granted
 791  *  FALSE: Otherwise
 792  */
 793 BOOLEAN WINAPI RtlAreAnyAccessesGranted(
 794     ACCESS_MASK GrantedAccess,
 795     ACCESS_MASK DesiredAccess)
 796 {
 797     return (GrantedAccess & DesiredAccess) != 0;
 798 }
 799
 800
 801 /*************************************************************************
 802  * RtlMapGenericMask   [NTDLL.@]
 803  *
 804  * Determine the nongeneric access rights specified by an access mask
 805  *
 806  * RETURNS
 807  *  Nothing.
 808  */
 809 void WINAPI RtlMapGenericMask(
 810     PACCESS_MASK AccessMask,
 811     const GENERIC_MAPPING *GenericMapping)
 812 {
 813     if (*AccessMask & GENERIC_READ) {
 814         *AccessMask |= GenericMapping->GenericRead;
 815     } /* if */
 816
 817     if (*AccessMask & GENERIC_WRITE) {
 818         *AccessMask |= GenericMapping->GenericWrite;
 819     } /* if */
 820
 821     if (*AccessMask & GENERIC_EXECUTE) {
 822         *AccessMask |= GenericMapping->GenericExecute;
 823     } /* if */
 824
 825     if (*AccessMask & GENERIC_ALL) {
 826         *AccessMask |= GenericMapping->GenericAll;
 827     } /* if */
 828
 829     *AccessMask &= 0x0FFFFFFF;
 830 }
 831
 832
 833 /*************************************************************************
 834  * RtlCopyLuid   [NTDLL.@]
 835  *
 836  * Copy a local unique ID.
 837  *
 838  * PARAMS
 839  *  LuidDest [O] Destination for the copied Luid
 840  *  LuidSrc  [I] Source Luid to copy to LuidDest
 841  *
 842  * RETURNS
 843  *  Nothing.
 844  */
 845 void WINAPI RtlCopyLuid (PLUID LuidDest, const LUID *LuidSrc)
 846 {
 847     *LuidDest = *LuidSrc;
 848 }
 849
 850
 851 /*************************************************************************
 852  * RtlEqualLuid   [NTDLL.@]
 853  *
 854  * Compare two local unique ID's.
 855  *
 856  * PARAMS
 857  *  Luid1 [I] First Luid to compare to Luid2
 858  *  Luid2 [I] Second Luid to compare to Luid1
 859  *
 860  * RETURNS
 861  *  TRUE: The two LUID's are equal.
 862  *  FALSE: Otherwise
 863  */
 864 BOOLEAN WINAPI RtlEqualLuid (const LUID *Luid1, const LUID *Luid2)
 865 {
 866   return (Luid1->LowPart ==  Luid2->LowPart && Luid1->HighPart == Luid2->HighPart);
 867 }
 868
 869
 870 /*************************************************************************
 871  * RtlCopyLuidAndAttributesArray   [NTDLL.@]
 872  *
 873  * Copy an array of local unique ID's and attributes.
 874  *
 875  * PARAMS
 876  *  Count [I] Number of Luid/attributes in Src
 877  *  Src   [I] Source Luid/attributes to copy
 878  *  Dest  [O] Destination for copied Luid/attributes
 879  *
 880  * RETURNS
 881  *  Nothing.
 882  *
 883  * NOTES
 884  *  Dest must be large enough to hold Src.
 885  */
 886 void WINAPI RtlCopyLuidAndAttributesArray(
 887     ULONG Count,
 888     const LUID_AND_ATTRIBUTES *Src,
 889     PLUID_AND_ATTRIBUTES Dest)
 890 {
 891     ULONG i;
 892
 893     for (i = 0; i < Count; i++) Dest[i] = Src[i];
 894 }
 895
 896 NTSTATUS WINAPI RtlIpv4StringToAddressExW(PULONG IP, PULONG Port,
 897                                           LPCWSTR Buffer, PULONG MaxSize)
 898 {
 899     FIXME("(%p,%p,%p,%p): stub\n", IP, Port, Buffer, MaxSize);
 900
 901     return STATUS_SUCCESS;
 902 }
 903
 904 NTSTATUS WINAPI RtlIpv4AddressToStringExW (PULONG IP, PULONG Port,
 905                                            LPWSTR Buffer, PULONG MaxSize)
 906 {
 907     FIXME("(%p,%p,%p,%p): stub\n", IP, Port, Buffer, MaxSize);
 908
 909     return STATUS_SUCCESS;
 910 }
 911
 912 static DWORD_PTR get_pointer_obfuscator( void )
 913 {
 914     static DWORD_PTR pointer_obfuscator;
 915
 916     if (!pointer_obfuscator)
 917     {
 918         ULONG seed = NtGetTickCount();
 919         ULONG_PTR rand;
 920
 921         /* generate a random value for the obfuscator */
 922         rand = RtlUniform( &seed );
 923
 924         /* handle 64bit pointers */
 925         rand ^= (ULONG_PTR)RtlUniform( &seed ) << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
 926
 927         /* set the high bits so dereferencing obfuscated pointers will (usually) crash */
 928         rand |= (ULONG_PTR)0xc0000000 << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
 929
 930         interlocked_cmpxchg_ptr( (void**) &pointer_obfuscator, (void*) rand, NULL );
 931     }
 932
 933     return pointer_obfuscator;
 934 }
 935
 936 /*************************************************************************
 937  * RtlEncodePointer   [NTDLL.@]
 938  */
 939 PVOID WINAPI RtlEncodePointer( PVOID ptr )
 940 {
 941     DWORD_PTR ptrval = (DWORD_PTR) ptr;
 942     return (PVOID)(ptrval ^ get_pointer_obfuscator());
 943 }
 944
 945 PVOID WINAPI RtlDecodePointer( PVOID ptr )
 946 {
 947     DWORD_PTR ptrval = (DWORD_PTR) ptr;
 948     return (PVOID)(ptrval ^ get_pointer_obfuscator());
 949 }
 950
 951 /*************************************************************************
 952  * RtlInitializeSListHead   [NTDLL.@]
 953  */
 954 VOID WINAPI RtlInitializeSListHead(PSLIST_HEADER list)
 955 {
 956 #ifdef _WIN64
 957     list->s.Alignment = list->s.Region = 0;
 958     list->Header16.HeaderType = 1;  /* we use the 16-byte header */
 959 #else
 960     list->Alignment = 0;
 961 #endif
 962 }
 963
 964 /*************************************************************************
 965  * RtlQueryDepthSList   [NTDLL.@]
 966  */
 967 WORD WINAPI RtlQueryDepthSList(PSLIST_HEADER list)
 968 {
 969 #ifdef _WIN64
 970     return list->Header16.Depth;
 971 #else
 972     return list->s.Depth;
 973 #endif
 974 }
 975
 976 /*************************************************************************
 977  * RtlFirstEntrySList   [NTDLL.@]
 978  */
 979 PSLIST_ENTRY WINAPI RtlFirstEntrySList(const SLIST_HEADER* list)
 980 {
 981 #ifdef _WIN64
 982     return (SLIST_ENTRY *)((ULONG_PTR)list->Header16.NextEntry << 4);
 983 #else
 984     return list->s.Next.Next;
 985 #endif
 986 }
 987
 988 /*************************************************************************
 989  * RtlInterlockedFlushSList   [NTDLL.@]
 990  */
 991 PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
 992 {
 993     SLIST_HEADER old, new;
 994
 995 #ifdef _WIN64
 996     if (!list->Header16.Depth) return NULL;
 997     new.s.Alignment = new.s.Region = 0;
 998     new.Header16.HeaderType = 1;  /* we use the 16-byte header */
 999     do
1000     {
1001         old = *list;
1002         new.Header16.Sequence = old.Header16.Sequence + 1;
1003     } while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1004     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1005 #else
1006     if (!list->s.Depth) return NULL;
1007     new.Alignment = 0;
1008     do
1009     {
1010         old = *list;
1011         new.s.Sequence = old.s.Sequence + 1;
1012     } while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
1013                                    old.Alignment) != old.Alignment);
1014     return old.s.Next.Next;
1015 #endif
1016 }
1017
1018 /*************************************************************************
1019  * RtlInterlockedPushEntrySList   [NTDLL.@]
1020  */
1021 PSLIST_ENTRY WINAPI RtlInterlockedPushEntrySList(PSLIST_HEADER list, PSLIST_ENTRY entry)
1022 {
1023     SLIST_HEADER old, new;
1024
1025 #ifdef _WIN64
1026     new.Header16.NextEntry = (ULONG_PTR)entry >> 4;
1027     do
1028     {
1029         old = *list;
1030         entry->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1031         new.Header16.Depth = old.Header16.Depth + 1;
1032         new.Header16.Sequence = old.Header16.Sequence + 1;
1033     } while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1034     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1035 #else
1036     new.s.Next.Next = entry;
1037     do
1038     {
1039         old = *list;
1040         entry->Next = old.s.Next.Next;
1041         new.s.Depth = old.s.Depth + 1;
1042         new.s.Sequence = old.s.Sequence + 1;
1043     } while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
1044                                    old.Alignment) != old.Alignment);
1045     return old.s.Next.Next;
1046 #endif
1047 }
1048
1049 /*************************************************************************
1050  * RtlInterlockedPopEntrySList   [NTDLL.@]
1051  */
1052 PSLIST_ENTRY WINAPI RtlInterlockedPopEntrySList(PSLIST_HEADER list)
1053 {
1054     SLIST_HEADER old, new;
1055     PSLIST_ENTRY entry;
1056
1057 #ifdef _WIN64
1058     do
1059     {
1060         old = *list;
1061         if (!(entry = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4))) return NULL;
1062         /* entry could be deleted by another thread */
1063         __TRY
1064         {
1065             new.Header16.NextEntry = (ULONG_PTR)entry->Next >> 4;
1066             new.Header16.Depth = old.Header16.Depth - 1;
1067             new.Header16.Sequence = old.Header16.Sequence + 1;
1068         }
1069         __EXCEPT_PAGE_FAULT
1070         {
1071         }
1072         __ENDTRY
1073     } while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1074 #else
1075     do
1076     {
1077         old = *list;
1078         if (!(entry = old.s.Next.Next)) return NULL;
1079         /* entry could be deleted by another thread */
1080         __TRY
1081         {
1082             new.s.Next.Next = entry->Next;
1083             new.s.Depth = old.s.Depth - 1;
1084             new.s.Sequence = old.s.Sequence + 1;
1085         }
1086         __EXCEPT_PAGE_FAULT
1087         {
1088         }
1089         __ENDTRY
1090     } while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
1091                                    old.Alignment) != old.Alignment);
1092 #endif
1093     return entry;
1094 }
1095
1096 /*************************************************************************
1097  * RtlInterlockedPushListSList   [NTDLL.@]
1098  */
1099 PSLIST_ENTRY WINAPI RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
1100                                                 PSLIST_ENTRY last, ULONG count)
1101 {
1102     SLIST_HEADER old, new;
1103
1104 #ifdef _WIN64
1105     new.Header16.NextEntry = (ULONG_PTR)first >> 4;
1106     do
1107     {
1108         old = *list;
1109         new.Header16.Depth = old.Header16.Depth + count;
1110         new.Header16.Sequence = old.Header16.Sequence + 1;
1111         last->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1112     } while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1113     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1114 #else
1115     new.s.Next.Next = first;
1116     do
1117     {
1118         old = *list;
1119         new.s.Depth = old.s.Depth + count;
1120         new.s.Sequence = old.s.Sequence + 1;
1121         last->Next = old.s.Next.Next;
1122     } while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
1123                                    old.Alignment) != old.Alignment);
1124     return old.s.Next.Next;
1125 #endif
1126 }
1127
1128 /******************************************************************************
1129  *  RtlGetCompressionWorkSpaceSize              [NTDLL.@]
1130  */
1131 NTSTATUS WINAPI RtlGetCompressionWorkSpaceSize(USHORT CompressionFormatAndEngine,
1132                                                PULONG CompressBufferWorkSpaceSize,
1133                                                PULONG CompressFragmentWorkSpaceSize)
1134 {
1135     FIXME("0x%04x, %p, %p: stub!\n", CompressionFormatAndEngine, CompressBufferWorkSpaceSize,
1136          CompressFragmentWorkSpaceSize);
1137
1138     return STATUS_NOT_IMPLEMENTED;
1139 }
1140
1141 /******************************************************************************
1142  *  RtlCompressBuffer           [NTDLL.@]
1143  */
1144 NTSTATUS WINAPI RtlCompressBuffer(USHORT CompressionFormatAndEngine, PUCHAR UncompressedBuffer,
1145                                   ULONG UncompressedBufferSize, PUCHAR CompressedBuffer,
1146                                   ULONG CompressedBufferSize, ULONG UncompressedChunkSize,
1147                                   PULONG FinalCompressedSize, PVOID WorkSpace)
1148 {
1149     FIXME("0x%04x, %p, %u, %p, %u, %u, %p, %p :stub\n", CompressionFormatAndEngine, UncompressedBuffer,
1150          UncompressedBufferSize, CompressedBuffer, CompressedBufferSize, UncompressedChunkSize,
1151          FinalCompressedSize, WorkSpace);
1152
1153     return STATUS_NOT_IMPLEMENTED;
1154 }
1155
1156 /******************************************************************************
1157  *  RtlDecompressBuffer         [NTDLL.@]
1158  */
1159 NTSTATUS WINAPI RtlDecompressBuffer(USHORT CompressionFormat, PUCHAR UncompressedBuffer,
1160                                     ULONG UncompressedBufferSize, PUCHAR CompressedBuffer,
1161                                     ULONG CompressedBufferSize, PULONG FinalUncompressedSize)
1162 {
1163     FIXME("0x%04x, %p, %u, %p, %u, %p :stub\n", CompressionFormat, UncompressedBuffer, UncompressedBufferSize,
1164          CompressedBuffer, CompressedBufferSize, FinalUncompressedSize);
1165
1166     return STATUS_NOT_IMPLEMENTED;
1167 }