dlls/krnl386.exe16/selector.c

   1 /*
   2  * Selector manipulation functions
   3  *
   4  * Copyright 1995 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <string.h>
  25
  26 #include "wine/winbase16.h"
  27 #include "wine/server.h"
  28 #include "wine/debug.h"
  29 #include "kernel16_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(selector);
  32
  33 #define LDT_SIZE 8192
  34
  35 /* get the number of selectors needed to cover up to the selector limit */
  36 static inline WORD get_sel_count( WORD sel )
  37 {
  38     return (wine_ldt_copy.limit[sel >> __AHSHIFT] >> 16) + 1;
  39 }
  40
  41
  42 /***********************************************************************
  43  *           AllocSelectorArray   (KERNEL.206)
  44  */
  45 WORD WINAPI AllocSelectorArray16( WORD count )
  46 {
  47     WORD i, sel = wine_ldt_alloc_entries( count );
  48
  49     if (sel)
  50     {
  51         LDT_ENTRY entry;
  52         wine_ldt_set_base( &entry, 0 );
  53         wine_ldt_set_limit( &entry, 1 ); /* avoid 0 base and limit */
  54         wine_ldt_set_flags( &entry, WINE_LDT_FLAGS_DATA );
  55         for (i = 0; i < count; i++) wine_ldt_set_entry( sel + (i << __AHSHIFT), &entry );
  56     }
  57     return sel;
  58 }
  59
  60
  61 /***********************************************************************
  62  *           AllocSelector   (KERNEL.175)
  63  */
  64 WORD WINAPI AllocSelector16( WORD sel )
  65 {
  66     WORD newsel, count, i;
  67
  68     count = sel ? get_sel_count(sel) : 1;
  69     newsel = wine_ldt_alloc_entries( count );
  70     TRACE("(%04x): returning %04x\n", sel, newsel );
  71     if (!newsel) return 0;
  72     if (!sel) return newsel;  /* nothing to copy */
  73     for (i = 0; i < count; i++)
  74     {
  75         LDT_ENTRY entry;
  76         wine_ldt_get_entry( sel + (i << __AHSHIFT), &entry );
  77         wine_ldt_set_entry( newsel + (i << __AHSHIFT), &entry );
  78     }
  79     return newsel;
  80 }
  81
  82
  83 /***********************************************************************
  84  *           FreeSelector   (KERNEL.176)
  85  */
  86 WORD WINAPI FreeSelector16( WORD sel )
  87 {
  88     LDT_ENTRY entry;
  89
  90     wine_ldt_get_entry( sel, &entry );
  91     if (wine_ldt_is_empty( &entry )) return sel;  /* error */
  92     /* Check if we are freeing current %fs selector */
  93     if (!((wine_get_fs() ^ sel) & ~3))
  94         WARN("Freeing %%fs selector (%04x), not good.\n", wine_get_fs() );
  95     wine_ldt_free_entries( sel, 1 );
  96     return 0;
  97 }
  98
  99
 100 /***********************************************************************
 101  *           SELECTOR_SetEntries
 102  *
 103  * Set the LDT entries for an array of selectors.
 104  */
 105 static void SELECTOR_SetEntries( WORD sel, const void *base, DWORD size, unsigned char flags )
 106 {
 107     LDT_ENTRY entry;
 108     WORD i, count;
 109
 110     wine_ldt_set_base( &entry, base );
 111     wine_ldt_set_limit( &entry, size - 1 );
 112     wine_ldt_set_flags( &entry, flags );
 113     count = (size + 0xffff) / 0x10000;
 114     for (i = 0; i < count; i++)
 115     {
 116         wine_ldt_set_entry( sel + (i << __AHSHIFT), &entry );
 117         wine_ldt_set_base( &entry, (char*)wine_ldt_get_base(&entry) + 0x10000);
 118         /* yep, Windows sets limit like that, not 64K sel units */
 119         wine_ldt_set_limit( &entry, wine_ldt_get_limit(&entry) - 0x10000 );
 120     }
 121 }
 122
 123
 124 /***********************************************************************
 125  *           SELECTOR_AllocBlock
 126  *
 127  * Allocate selectors for a block of linear memory.
 128  */
 129 WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags )
 130 {
 131     WORD sel, count;
 132
 133     if (!size) return 0;
 134     count = (size + 0xffff) / 0x10000;
 135     sel = wine_ldt_alloc_entries( count );
 136     if (sel) SELECTOR_SetEntries( sel, base, size, flags );
 137     return sel;
 138 }
 139
 140
 141 /***********************************************************************
 142  *           SELECTOR_FreeBlock
 143  *
 144  * Free a block of selectors.
 145  */
 146 void SELECTOR_FreeBlock( WORD sel )
 147 {
 148     WORD i, count = get_sel_count( sel );
 149
 150     TRACE("(%04x,%d)\n", sel, count );
 151     for (i = 0; i < count; i++) FreeSelector16( sel + (i << __AHSHIFT) );
 152 }
 153
 154
 155 /***********************************************************************
 156  *           SELECTOR_ReallocBlock
 157  *
 158  * Change the size of a block of selectors.
 159  */
 160 WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size )
 161 {
 162     LDT_ENTRY entry;
 163     int oldcount, newcount;
 164
 165     if (!size) size = 1;
 166     wine_ldt_get_entry( sel, &entry );
 167     oldcount = (wine_ldt_get_limit(&entry) >> 16) + 1;
 168     newcount = (size + 0xffff) >> 16;
 169
 170     sel = wine_ldt_realloc_entries( sel, oldcount, newcount );
 171     if (sel) SELECTOR_SetEntries( sel, base, size, wine_ldt_get_flags(&entry) );
 172     return sel;
 173 }
 174
 175
 176 /***********************************************************************
 177  *           PrestoChangoSelector   (KERNEL.177)
 178  */
 179 WORD WINAPI PrestoChangoSelector16( WORD selSrc, WORD selDst )
 180 {
 181     LDT_ENTRY entry;
 182     wine_ldt_get_entry( selSrc, &entry );
 183     /* toggle the executable bit */
 184     entry.HighWord.Bits.Type ^= (WINE_LDT_FLAGS_CODE ^ WINE_LDT_FLAGS_DATA);
 185     wine_ldt_set_entry( selDst, &entry );
 186     return selDst;
 187 }
 188
 189
 190 /***********************************************************************
 191  *           AllocCStoDSAlias   (KERNEL.170)
 192  *           AllocAlias         (KERNEL.172)
 193  */
 194 WORD WINAPI AllocCStoDSAlias16( WORD sel )
 195 {
 196     WORD newsel;
 197     LDT_ENTRY entry;
 198
 199     newsel = wine_ldt_alloc_entries( 1 );
 200     TRACE("(%04x): returning %04x\n",
 201                       sel, newsel );
 202     if (!newsel) return 0;
 203     wine_ldt_get_entry( sel, &entry );
 204     entry.HighWord.Bits.Type = WINE_LDT_FLAGS_DATA;
 205     wine_ldt_set_entry( newsel, &entry );
 206     return newsel;
 207 }
 208
 209
 210 /***********************************************************************
 211  *           AllocDStoCSAlias   (KERNEL.171)
 212  */
 213 WORD WINAPI AllocDStoCSAlias16( WORD sel )
 214 {
 215     WORD newsel;
 216     LDT_ENTRY entry;
 217
 218     newsel = wine_ldt_alloc_entries( 1 );
 219     TRACE("(%04x): returning %04x\n",
 220                       sel, newsel );
 221     if (!newsel) return 0;
 222     wine_ldt_get_entry( sel, &entry );
 223     entry.HighWord.Bits.Type = WINE_LDT_FLAGS_CODE;
 224     wine_ldt_set_entry( newsel, &entry );
 225     return newsel;
 226 }
 227
 228
 229 /***********************************************************************
 230  *           LongPtrAdd   (KERNEL.180)
 231  */
 232 void WINAPI LongPtrAdd16( DWORD ptr, DWORD add )
 233 {
 234     LDT_ENTRY entry;
 235     wine_ldt_get_entry( SELECTOROF(ptr), &entry );
 236     wine_ldt_set_base( &entry, (char *)wine_ldt_get_base(&entry) + add );
 237     wine_ldt_set_entry( SELECTOROF(ptr), &entry );
 238 }
 239
 240
 241 /***********************************************************************
 242  *             GetSelectorBase   (KERNEL.186)
 243  */
 244 DWORD WINAPI GetSelectorBase( WORD sel )
 245 {
 246     void *base = wine_ldt_copy.base[sel >> __AHSHIFT];
 247
 248     /* if base points into DOSMEM, assume we have to
 249      * return pointer into physical lower 1MB */
 250
 251     return DOSMEM_MapLinearToDos( base );
 252 }
 253
 254
 255 /***********************************************************************
 256  *             SetSelectorBase   (KERNEL.187)
 257  */
 258 WORD WINAPI SetSelectorBase( WORD sel, DWORD base )
 259 {
 260     LDT_ENTRY entry;
 261     wine_ldt_get_entry( sel, &entry );
 262     wine_ldt_set_base( &entry, DOSMEM_MapDosToLinear(base) );
 263     wine_ldt_set_entry( sel, &entry );
 264     return sel;
 265 }
 266
 267
 268 /***********************************************************************
 269  *           GetSelectorLimit   (KERNEL.188)
 270  */
 271 DWORD WINAPI GetSelectorLimit16( WORD sel )
 272 {
 273     return wine_ldt_copy.limit[sel >> __AHSHIFT];
 274 }
 275
 276
 277 /***********************************************************************
 278  *           SetSelectorLimit   (KERNEL.189)
 279  */
 280 WORD WINAPI SetSelectorLimit16( WORD sel, DWORD limit )
 281 {
 282     LDT_ENTRY entry;
 283     wine_ldt_get_entry( sel, &entry );
 284     wine_ldt_set_limit( &entry, limit );
 285     wine_ldt_set_entry( sel, &entry );
 286     return sel;
 287 }
 288
 289
 290 /***********************************************************************
 291  *           SelectorAccessRights   (KERNEL.196)
 292  */
 293 WORD WINAPI SelectorAccessRights16( WORD sel, WORD op, WORD val )
 294 {
 295     LDT_ENTRY entry;
 296     wine_ldt_get_entry( sel, &entry );
 297
 298     if (op == 0)  /* get */
 299     {
 300         return entry.HighWord.Bytes.Flags1 | ((entry.HighWord.Bytes.Flags2 << 8) & 0xf0);
 301     }
 302     else  /* set */
 303     {
 304         entry.HighWord.Bytes.Flags1 = LOBYTE(val) | 0xf0;
 305         entry.HighWord.Bytes.Flags2 = (entry.HighWord.Bytes.Flags2 & 0x0f) | (HIBYTE(val) & 0xf0);
 306         wine_ldt_set_entry( sel, &entry );
 307         return 0;
 308     }
 309 }
 310
 311
 312 /***********************************************************************
 313  *           IsBadCodePtr   (KERNEL.336)
 314  */
 315 BOOL16 WINAPI IsBadCodePtr16( SEGPTR lpfn )
 316 {
 317     WORD sel;
 318     LDT_ENTRY entry;
 319
 320     sel = SELECTOROF(lpfn);
 321     if (!sel) return TRUE;
 322     wine_ldt_get_entry( sel, &entry );
 323     if (wine_ldt_is_empty( &entry )) return TRUE;
 324     /* check for code segment, ignoring conforming, read-only and accessed bits */
 325     if ((entry.HighWord.Bits.Type ^ WINE_LDT_FLAGS_CODE) & 0x18) return TRUE;
 326     if (OFFSETOF(lpfn) > wine_ldt_get_limit(&entry)) return TRUE;
 327     return FALSE;
 328 }
 329
 330
 331 /***********************************************************************
 332  *           IsBadStringPtr   (KERNEL.337)
 333  */
 334 BOOL16 WINAPI IsBadStringPtr16( SEGPTR ptr, UINT16 size )
 335 {
 336     WORD sel;
 337     LDT_ENTRY entry;
 338
 339     sel = SELECTOROF(ptr);
 340     if (!sel) return TRUE;
 341     wine_ldt_get_entry( sel, &entry );
 342     if (wine_ldt_is_empty( &entry )) return TRUE;
 343     /* check for data or readable code segment */
 344     if (!(entry.HighWord.Bits.Type & 0x10)) return TRUE;  /* system descriptor */
 345     if ((entry.HighWord.Bits.Type & 0x0a) == 0x08) return TRUE;  /* non-readable code segment */
 346     if (strlen(MapSL(ptr)) < size) size = strlen(MapSL(ptr)) + 1;
 347     if (size && (OFFSETOF(ptr) + size - 1 > wine_ldt_get_limit(&entry))) return TRUE;
 348     return FALSE;
 349 }
 350
 351
 352 /***********************************************************************
 353  *           IsBadHugeReadPtr   (KERNEL.346)
 354  */
 355 BOOL16 WINAPI IsBadHugeReadPtr16( SEGPTR ptr, DWORD size )
 356 {
 357     WORD sel;
 358     LDT_ENTRY entry;
 359
 360     sel = SELECTOROF(ptr);
 361     if (!sel) return TRUE;
 362     wine_ldt_get_entry( sel, &entry );
 363     if (wine_ldt_is_empty( &entry )) return TRUE;
 364     /* check for data or readable code segment */
 365     if (!(entry.HighWord.Bits.Type & 0x10)) return TRUE;  /* system descriptor */
 366     if ((entry.HighWord.Bits.Type & 0x0a) == 0x08) return TRUE;  /* non-readable code segment */
 367     if (size && (OFFSETOF(ptr) + size - 1 > wine_ldt_get_limit( &entry ))) return TRUE;
 368     return FALSE;
 369 }
 370
 371
 372 /***********************************************************************
 373  *           IsBadHugeWritePtr   (KERNEL.347)
 374  */
 375 BOOL16 WINAPI IsBadHugeWritePtr16( SEGPTR ptr, DWORD size )
 376 {
 377     WORD sel;
 378     LDT_ENTRY entry;
 379
 380     sel = SELECTOROF(ptr);
 381     if (!sel) return TRUE;
 382     wine_ldt_get_entry( sel, &entry );
 383     if (wine_ldt_is_empty( &entry )) return TRUE;
 384     /* check for writable data segment, ignoring expand-down and accessed flags */
 385     if ((entry.HighWord.Bits.Type ^ WINE_LDT_FLAGS_DATA) & ~5) return TRUE;
 386     if (size && (OFFSETOF(ptr) + size - 1 > wine_ldt_get_limit( &entry ))) return TRUE;
 387     return FALSE;
 388 }
 389
 390 /***********************************************************************
 391  *           IsBadReadPtr   (KERNEL.334)
 392  */
 393 BOOL16 WINAPI IsBadReadPtr16( SEGPTR ptr, UINT16 size )
 394 {
 395     return IsBadHugeReadPtr16( ptr, size );
 396 }
 397
 398
 399 /***********************************************************************
 400  *           IsBadWritePtr   (KERNEL.335)
 401  */
 402 BOOL16 WINAPI IsBadWritePtr16( SEGPTR ptr, UINT16 size )
 403 {
 404     return IsBadHugeWritePtr16( ptr, size );
 405 }
 406
 407
 408 /***********************************************************************
 409  *           IsBadFlatReadWritePtr   (KERNEL.627)
 410  */
 411 BOOL16 WINAPI IsBadFlatReadWritePtr16( SEGPTR ptr, DWORD size, BOOL16 bWrite )
 412 {
 413     return bWrite? IsBadHugeWritePtr16( ptr, size )
 414                  : IsBadHugeReadPtr16( ptr, size );
 415 }
 416
 417
 418 /************************************* Win95 pointer mapping functions *
 419  *
 420  */
 421
 422 struct mapls_entry
 423 {
 424     struct mapls_entry *next;
 425     void               *addr;   /* linear address */
 426     int                 count;  /* ref count */
 427     WORD                sel;    /* selector */
 428 };
 429
 430 static struct mapls_entry *first_entry;
 431
 432
 433 /***********************************************************************
 434  *           MapLS   (KERNEL32.@)
 435  *           MapLS   (KERNEL.358)
 436  *
 437  * Maps linear pointer to segmented.
 438  */
 439 SEGPTR WINAPI MapLS( LPCVOID ptr )
 440 {
 441     struct mapls_entry *entry, *free = NULL;
 442     const void *base;
 443     SEGPTR ret = 0;
 444
 445     if (!HIWORD(ptr)) return (SEGPTR)LOWORD(ptr);
 446
 447     base = (const char *)ptr - ((ULONG_PTR)ptr & 0x7fff);
 448     HeapLock( GetProcessHeap() );
 449     for (entry = first_entry; entry; entry = entry->next)
 450     {
 451         if (entry->addr == base) break;
 452         if (!entry->count) free = entry;
 453     }
 454
 455     if (!entry)
 456     {
 457         if (!free)  /* no free entry found, create a new one */
 458         {
 459             if (!(free = HeapAlloc( GetProcessHeap(), 0, sizeof(*free) ))) goto done;
 460             if (!(free->sel = SELECTOR_AllocBlock( base, 0x10000, WINE_LDT_FLAGS_DATA )))
 461             {
 462                 HeapFree( GetProcessHeap(), 0, free );
 463                 goto done;
 464             }
 465             free->count = 0;
 466             free->next = first_entry;
 467             first_entry = free;
 468         }
 469         SetSelectorBase( free->sel, (DWORD)base );
 470         free->addr = (void*)base;
 471         entry = free;
 472     }
 473     entry->count++;
 474     ret = MAKESEGPTR( entry->sel, (const char *)ptr - (char *)entry->addr );
 475  done:
 476     HeapUnlock( GetProcessHeap() );
 477     return ret;
 478 }
 479
 480 /***********************************************************************
 481  *           UnMapLS   (KERNEL32.@)
 482  *           UnMapLS   (KERNEL.359)
 483  *
 484  * Free mapped selector.
 485  */
 486 void WINAPI UnMapLS( SEGPTR sptr )
 487 {
 488     struct mapls_entry *entry;
 489     WORD sel = SELECTOROF(sptr);
 490
 491     if (sel)
 492     {
 493         HeapLock( GetProcessHeap() );
 494         for (entry = first_entry; entry; entry = entry->next) if (entry->sel == sel) break;
 495         if (entry && entry->count > 0) entry->count--;
 496         HeapUnlock( GetProcessHeap() );
 497     }
 498 }
 499
 500 /***********************************************************************
 501  *           MapSL   (KERNEL32.@)
 502  *           MapSL   (KERNEL.357)
 503  *
 504  * Maps fixed segmented pointer to linear.
 505  */
 506 LPVOID WINAPI MapSL( SEGPTR sptr )
 507 {
 508     return (char *)wine_ldt_copy.base[SELECTOROF(sptr) >> __AHSHIFT] + OFFSETOF(sptr);
 509 }
 510
 511 /***********************************************************************
 512  *           MapSLFix   (KERNEL32.@)
 513  *
 514  * FIXME: MapSLFix and UnMapSLFixArray should probably prevent
 515  * unexpected linear address change when GlobalCompact() shuffles
 516  * moveable blocks.
 517  */
 518
 519 LPVOID WINAPI MapSLFix( SEGPTR sptr )
 520 {
 521     return MapSL(sptr);
 522 }
 523
 524
 525 /***********************************************************************
 526  *           UnMapSLFixArray   (KERNEL32.@)
 527  *
 528  * Must not change EAX, hence defined as asm function.
 529  */
 530 __ASM_STDCALL_FUNC( UnMapSLFixArray, 8, "ret $8" )
 531
 532 /***********************************************************************
 533  *              SMapLS (KERNEL32.@)
 534  */
 535 __ASM_STDCALL_FUNC( SMapLS, 0,
 536                    "xor %edx,%edx\n\t"
 537                    "testl $0xffff0000,%eax\n\t"
 538                    "jz 1f\n\t"
 539                    "pushl %eax\n\t"
 540                    "call " __ASM_NAME("MapLS") __ASM_STDCALL(4) "\n\t"
 541                    "movl %eax,%edx\n"
 542                    "1:\tret" )
 543
 544 /***********************************************************************
 545  *              SUnMapLS (KERNEL32.@)
 546  */
 547 __ASM_STDCALL_FUNC( SUnMapLS, 0,
 548                    "pushl %eax\n\t"  /* preserve eax */
 549                    "pushl %eax\n\t"
 550                    "call " __ASM_NAME("UnMapLS") __ASM_STDCALL(4) "\n\t"
 551                    "popl %eax\n\t"
 552                    "ret" )
 553
 554 /***********************************************************************
 555  *              SMapLS_IP_EBP_8 (KERNEL32.@)
 556  *              SMapLS_IP_EBP_12 (KERNEL32.@)
 557  *              SMapLS_IP_EBP_16 (KERNEL32.@)
 558  *              SMapLS_IP_EBP_20 (KERNEL32.@)
 559  *              SMapLS_IP_EBP_24 (KERNEL32.@)
 560  *              SMapLS_IP_EBP_28 (KERNEL32.@)
 561  *              SMapLS_IP_EBP_32 (KERNEL32.@)
 562  *              SMapLS_IP_EBP_36 (KERNEL32.@)
 563  *              SMapLS_IP_EBP_40 (KERNEL32.@)
 564  *
 565  * These functions map linear pointers at [EBP+xxx] to segmented pointers
 566  * and return them.
 567  * Win95 uses some kind of alias structs, which it stores in [EBP+x] to
 568  * unravel them at SUnMapLS. We just store the segmented pointer there.
 569  */
 570 #define DEFINE_SMapLS(n) \
 571   __ASM_STDCALL_FUNC( SMapLS_IP_EBP_ ## n, 0, \
 572                      "movl " #n "(%ebp),%eax\n\t" \
 573                      "call " __ASM_NAME("SMapLS") __ASM_STDCALL(4) "\n\t" \
 574                      "movl %edx," #n "(%ebp)\n\t" \
 575                      "ret" )
 576
 577 DEFINE_SMapLS(8)
 578 DEFINE_SMapLS(12)
 579 DEFINE_SMapLS(16)
 580 DEFINE_SMapLS(20)
 581 DEFINE_SMapLS(24)
 582 DEFINE_SMapLS(28)
 583 DEFINE_SMapLS(32)
 584 DEFINE_SMapLS(36)
 585 DEFINE_SMapLS(40)
 586
 587
 588 /***********************************************************************
 589  *              SUnMapLS_IP_EBP_8 (KERNEL32.@)
 590  *              SUnMapLS_IP_EBP_12 (KERNEL32.@)
 591  *              SUnMapLS_IP_EBP_16 (KERNEL32.@)
 592  *              SUnMapLS_IP_EBP_20 (KERNEL32.@)
 593  *              SUnMapLS_IP_EBP_24 (KERNEL32.@)
 594  *              SUnMapLS_IP_EBP_28 (KERNEL32.@)
 595  *              SUnMapLS_IP_EBP_32 (KERNEL32.@)
 596  *              SUnMapLS_IP_EBP_36 (KERNEL32.@)
 597  *              SUnMapLS_IP_EBP_40 (KERNEL32.@)
 598  */
 599
 600 #define DEFINE_SUnMapLS(n) \
 601   __ASM_STDCALL_FUNC( SUnMapLS_IP_EBP_ ## n, 0, \
 602                      "pushl %eax\n\t"  /* preserve eax */ \
 603                      "pushl " #n "(%ebp)\n\t" \
 604                      "call " __ASM_NAME("UnMapLS") __ASM_STDCALL(4) "\n\t" \
 605                      "movl $0," #n "(%ebp)\n\t" \
 606                      "popl %eax\n\t" \
 607                      "ret" )
 608
 609 DEFINE_SUnMapLS(8)
 610 DEFINE_SUnMapLS(12)
 611 DEFINE_SUnMapLS(16)
 612 DEFINE_SUnMapLS(20)
 613 DEFINE_SUnMapLS(24)
 614 DEFINE_SUnMapLS(28)
 615 DEFINE_SUnMapLS(32)
 616 DEFINE_SUnMapLS(36)
 617 DEFINE_SUnMapLS(40)