dlls/kernel/ne_module.c

   1 /*
   2  * NE modules
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #ifdef HAVE_UNISTD_H
  30 # include <unistd.h>
  31 #endif
  32 #include <ctype.h>
  33
  34 #include "winbase.h"
  35 #include "wine/winbase16.h"
  36 #include "winerror.h"
  37 #include "wownt32.h"
  38 #include "wine/library.h"
  39 #include "module.h"
  40 #include "toolhelp.h"
  41 #include "global.h"
  42 #include "file.h"
  43 #include "task.h"
  44 #include "snoop.h"
  45 #include "builtin16.h"
  46 #include "stackframe.h"
  47 #include "excpt.h"
  48 #include "wine/exception.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(module);
  52 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  53
  54 #include "pshpack1.h"
  55 typedef struct _GPHANDLERDEF
  56 {
  57     WORD selector;
  58     WORD rangeStart;
  59     WORD rangeEnd;
  60     WORD handler;
  61 } GPHANDLERDEF;
  62 #include "poppack.h"
  63
  64 /*
  65  * Segment table entry
  66  */
  67 struct ne_segment_table_entry_s
  68 {
  69     WORD seg_data_offset;   /* Sector offset of segment data    */
  70     WORD seg_data_length;   /* Length of segment data           */
  71     WORD seg_flags;         /* Flags associated with this segment       */
  72     WORD min_alloc;         /* Minimum allocation size for this */
  73 };
  74
  75 #define hFirstModule (pThhook->hExeHead)
  76
  77 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  78
  79 typedef struct
  80 {
  81     void       *module_start;      /* 32-bit address of the module data */
  82     int         module_size;       /* Size of the module data */
  83     void       *code_start;        /* 32-bit address of DLL code */
  84     void       *data_start;        /* 32-bit address of DLL data */
  85     const char *owner;             /* 32-bit dll that contains this dll */
  86     const void *rsrc;              /* resources data */
  87 } BUILTIN16_DESCRIPTOR;
  88
  89 /* Table of all built-in DLLs */
  90
  91 #define MAX_DLLS 50
  92
  93 static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
  94
  95
  96 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  97 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  98
  99 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
 100
 101 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
 102
 103
 104 static WINE_EXCEPTION_FILTER(page_fault)
 105 {
 106     if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
 107         GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
 108         return EXCEPTION_EXECUTE_HANDLER;
 109     return EXCEPTION_CONTINUE_SEARCH;
 110 }
 111
 112
 113 /* patch all the flat cs references of the code segment if necessary */
 114 inline static void patch_code_segment( void *code_segment )
 115 {
 116 #ifdef __i386__
 117     CALLFROM16 *call = code_segment;
 118     if (call->flatcs == wine_get_cs()) return;  /* nothing to patch */
 119     while (call->pushl == 0x68)
 120     {
 121         call->flatcs = wine_get_cs();
 122         call++;
 123     }
 124 #endif
 125 }
 126
 127
 128 /***********************************************************************
 129  *           find_dll_descr
 130  *
 131  * Find a descriptor in the list
 132  */
 133 static const BUILTIN16_DESCRIPTOR *find_dll_descr( const char *dllname )
 134 {
 135     int i;
 136     for (i = 0; i < MAX_DLLS; i++)
 137     {
 138         const BUILTIN16_DESCRIPTOR *descr = builtin_dlls[i];
 139         if (descr)
 140         {
 141             NE_MODULE *pModule = (NE_MODULE *)descr->module_start;
 142             OFSTRUCT *pOfs = (OFSTRUCT *)((LPBYTE)pModule + pModule->fileinfo);
 143             BYTE *name_table = (BYTE *)pModule + pModule->name_table;
 144
 145             /* check the dll file name */
 146             if (!FILE_strcasecmp( pOfs->szPathName, dllname )) return descr;
 147             /* check the dll module name (without extension) */
 148             if (!FILE_strncasecmp( dllname, name_table+1, *name_table ) &&
 149                 !strcmp( dllname + *name_table, ".dll" ))
 150                 return descr;
 151         }
 152     }
 153     return NULL;
 154 }
 155
 156
 157 /***********************************************************************
 158  *           is_builtin_present
 159  *
 160  * Check if a builtin dll descriptor is present (because we loaded its 32-bit counterpart).
 161  */
 162 static BOOL is_builtin_present( LPCSTR name )
 163 {
 164     char dllname[20], *p;
 165
 166     if (strlen(name) >= sizeof(dllname)-4) return FALSE;
 167     strcpy( dllname, name );
 168     p = strrchr( dllname, '.' );
 169     if (!p) strcat( dllname, ".dll" );
 170     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 171
 172     return (find_dll_descr( dllname ) != NULL);
 173 }
 174
 175
 176 /***********************************************************************
 177  *           __wine_register_dll_16 (KERNEL32.@)
 178  *
 179  * Register a built-in DLL descriptor.
 180  */
 181 void __wine_register_dll_16( const BUILTIN16_DESCRIPTOR *descr )
 182 {
 183     int i;
 184
 185     for (i = 0; i < MAX_DLLS; i++)
 186     {
 187         if (builtin_dlls[i]) continue;
 188         builtin_dlls[i] = descr;
 189         break;
 190     }
 191     assert( i < MAX_DLLS );
 192 }
 193
 194
 195 /***********************************************************************
 196  *           __wine_unregister_dll_16 (KERNEL32.@)
 197  *
 198  * Unregister a built-in DLL descriptor.
 199  */
 200 void __wine_unregister_dll_16( const BUILTIN16_DESCRIPTOR *descr )
 201 {
 202     int i;
 203
 204     for (i = 0; i < MAX_DLLS; i++)
 205     {
 206         if (builtin_dlls[i] != descr) continue;
 207         builtin_dlls[i] = NULL;
 208         break;
 209     }
 210 }
 211
 212
 213 /***********************************************************************
 214  *           NE_DumpModule
 215  */
 216 void NE_DumpModule( HMODULE16 hModule )
 217 {
 218     int i, ordinal;
 219     SEGTABLEENTRY *pSeg;
 220     BYTE *pstr;
 221     WORD *pword;
 222     NE_MODULE *pModule;
 223     ET_BUNDLE *bundle;
 224     ET_ENTRY *entry;
 225
 226     if (!(pModule = NE_GetPtr( hModule )))
 227     {
 228         MESSAGE( "**** %04x is not a module handle\n", hModule );
 229         return;
 230     }
 231
 232       /* Dump the module info */
 233     DPRINTF( "---\n" );
 234     DPRINTF( "Module %04x:\n", hModule );
 235     DPRINTF( "count=%d flags=%04x heap=%d stack=%d\n",
 236              pModule->count, pModule->flags,
 237              pModule->heap_size, pModule->stack_size );
 238     DPRINTF( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
 239              pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
 240              pModule->seg_count, pModule->modref_count );
 241     DPRINTF( "os_flags=%d swap_area=%d version=%04x\n",
 242              pModule->os_flags, pModule->min_swap_area,
 243              pModule->expected_version );
 244     if (pModule->flags & NE_FFLAGS_WIN32)
 245         DPRINTF( "PE module=%p\n", pModule->module32 );
 246
 247       /* Dump the file info */
 248     DPRINTF( "---\n" );
 249     DPRINTF( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
 250
 251       /* Dump the segment table */
 252     DPRINTF( "---\n" );
 253     DPRINTF( "Segment table:\n" );
 254     pSeg = NE_SEG_TABLE( pModule );
 255     for (i = 0; i < pModule->seg_count; i++, pSeg++)
 256         DPRINTF( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 257                  i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 258                  pSeg->minsize, pSeg->hSeg );
 259
 260       /* Dump the resource table */
 261     DPRINTF( "---\n" );
 262     DPRINTF( "Resource table:\n" );
 263     if (pModule->res_table)
 264     {
 265         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
 266         DPRINTF( "Alignment: %d\n", *pword++ );
 267         while (*pword)
 268         {
 269             NE_TYPEINFO *ptr = (NE_TYPEINFO *)pword;
 270             NE_NAMEINFO *pname = (NE_NAMEINFO *)(ptr + 1);
 271             DPRINTF( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 272             for (i = 0; i < ptr->count; i++, pname++)
 273                 DPRINTF( "offset=%d len=%d id=%04x\n",
 274                       pname->offset, pname->length, pname->id );
 275             pword = (WORD *)pname;
 276         }
 277     }
 278     else DPRINTF( "None\n" );
 279
 280       /* Dump the resident name table */
 281     DPRINTF( "---\n" );
 282     DPRINTF( "Resident-name table:\n" );
 283     pstr = (char *)pModule + pModule->name_table;
 284     while (*pstr)
 285     {
 286         DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 287                  *(WORD *)(pstr + *pstr + 1) );
 288         pstr += *pstr + 1 + sizeof(WORD);
 289     }
 290
 291       /* Dump the module reference table */
 292     DPRINTF( "---\n" );
 293     DPRINTF( "Module ref table:\n" );
 294     if (pModule->modref_table)
 295     {
 296         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 297         for (i = 0; i < pModule->modref_count; i++, pword++)
 298         {
 299             char name[10];
 300             GetModuleName16( *pword, name, sizeof(name) );
 301             DPRINTF( "%d: %04x -> '%s'\n", i, *pword, name );
 302         }
 303     }
 304     else DPRINTF( "None\n" );
 305
 306       /* Dump the entry table */
 307     DPRINTF( "---\n" );
 308     DPRINTF( "Entry table:\n" );
 309     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->entry_table);
 310     do {
 311         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 312         DPRINTF( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 313         ordinal = bundle->first;
 314         while (ordinal < bundle->last)
 315         {
 316             if (entry->type == 0xff)
 317                 DPRINTF("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 318             else
 319                 DPRINTF("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 320             entry++;
 321         }
 322     } while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 323
 324     /* Dump the non-resident names table */
 325     DPRINTF( "---\n" );
 326     DPRINTF( "Non-resident names table:\n" );
 327     if (pModule->nrname_handle)
 328     {
 329         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 330         while (*pstr)
 331         {
 332             DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 333                    *(WORD *)(pstr + *pstr + 1) );
 334             pstr += *pstr + 1 + sizeof(WORD);
 335         }
 336     }
 337     DPRINTF( "\n" );
 338 }
 339
 340
 341 /***********************************************************************
 342  *           NE_WalkModules
 343  *
 344  * Walk the module list and print the modules.
 345  */
 346 void NE_WalkModules(void)
 347 {
 348     HMODULE16 hModule = hFirstModule;
 349     MESSAGE( "Module Flags Name\n" );
 350     while (hModule)
 351     {
 352         NE_MODULE *pModule = NE_GetPtr( hModule );
 353         if (!pModule)
 354         {
 355             MESSAGE( "Bad module %04x in list\n", hModule );
 356             return;
 357         }
 358         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 359                  *((char *)pModule + pModule->name_table),
 360                  (char *)pModule + pModule->name_table + 1 );
 361         hModule = pModule->next;
 362     }
 363 }
 364
 365
 366 /***********************************************************************
 367  *              EntryAddrProc (KERNEL.667) Wine-specific export
 368  *
 369  * Return the entry point for a given ordinal.
 370  */
 371 FARPROC16 WINAPI EntryAddrProc16( HMODULE16 hModule, WORD ordinal )
 372 {
 373     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 374     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 375     return ret;
 376 }
 377
 378 /***********************************************************************
 379  *           NE_SetEntryPoint
 380  *
 381  * Change the value of an entry point. Use with caution!
 382  * It can only change the offset value, not the selector.
 383  */
 384 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 385 {
 386     NE_MODULE *pModule;
 387     ET_ENTRY *entry;
 388     ET_BUNDLE *bundle;
 389     int i;
 390
 391     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 392     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 393
 394     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 395     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 396     {
 397         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 398         if (!(bundle->next)) return 0;
 399     }
 400
 401     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 402     for (i=0; i < (ordinal - bundle->first - 1); i++)
 403         entry++;
 404
 405     memcpy( &entry->offs, &offset, sizeof(WORD) );
 406     return TRUE;
 407 }
 408
 409
 410 /***********************************************************************
 411  *           NE_OpenFile
 412  */
 413 HANDLE NE_OpenFile( NE_MODULE *pModule )
 414 {
 415     HANDLE handle;
 416     char *name;
 417
 418     TRACE("(%p)\n", pModule );
 419     /* mjm - removed module caching because it keeps open file handles
 420              thus preventing CDROMs from being ejected */
 421     name = NE_MODULE_NAME( pModule );
 422     if ((handle = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 423                                    NULL, OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE)
 424         MESSAGE( "Can't open file '%s' for module %04x\n", name, pModule->self );
 425     TRACE("opened '%s' -> %p\n", name, handle);
 426     return handle;
 427 }
 428
 429
 430 /* wrapper for SetFilePointer and ReadFile */
 431 static BOOL read_data( HANDLE handle, LONG offset, void *buffer, DWORD size )
 432 {
 433     DWORD result;
 434
 435     if (SetFilePointer( handle, offset, NULL, SEEK_SET ) == INVALID_SET_FILE_POINTER) return FALSE;
 436     if (!ReadFile( handle, buffer, size, &result, NULL )) return FALSE;
 437     return (result == size);
 438 }
 439
 440 /***********************************************************************
 441  *           NE_LoadExeHeader
 442  */
 443 static HMODULE16 NE_LoadExeHeader( HANDLE handle, LPCSTR path )
 444 {
 445     IMAGE_DOS_HEADER mz_header;
 446     IMAGE_OS2_HEADER ne_header;
 447     int size;
 448     HMODULE16 hModule;
 449     NE_MODULE *pModule;
 450     BYTE *pData, *pTempEntryTable;
 451     char *buffer, *fastload = NULL;
 452     int fastload_offset = 0, fastload_length = 0;
 453     ET_ENTRY *entry;
 454     ET_BUNDLE *bundle, *oldbundle;
 455     OFSTRUCT *ofs;
 456
 457   /* Read a block from either the file or the fast-load area. */
 458 #define READ(offset,size,buffer) \
 459        ((fastload && ((offset) >= fastload_offset) && \
 460          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 461         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 462          read_data( handle, (offset), (buffer), (size)))
 463
 464     if (!read_data( handle, 0, &mz_header, sizeof(mz_header)) ||
 465         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 466         return (HMODULE16)11;  /* invalid exe */
 467
 468     if (!read_data( handle, mz_header.e_lfanew, &ne_header, sizeof(ne_header) ))
 469         return (HMODULE16)11;  /* invalid exe */
 470
 471     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 472     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 473         MESSAGE("Sorry, this is an OS/2 linear executable (LX) file !\n");
 474         return (HMODULE16)12;
 475     }
 476     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 477
 478     /* We now have a valid NE header */
 479
 480     size = sizeof(NE_MODULE) +
 481              /* segment table */
 482            ne_header.ne_cseg * sizeof(SEGTABLEENTRY) +
 483              /* resource table */
 484            ne_header.ne_restab - ne_header.ne_rsrctab +
 485              /* resident names table */
 486            ne_header.ne_modtab - ne_header.ne_restab +
 487              /* module ref table */
 488            ne_header.ne_cmod * sizeof(WORD) +
 489              /* imported names table */
 490            ne_header.ne_enttab - ne_header.ne_imptab +
 491              /* entry table length */
 492            ne_header.ne_cbenttab +
 493              /* entry table extra conversion space */
 494            sizeof(ET_BUNDLE) +
 495            2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6) +
 496              /* loaded file info */
 497            sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 498
 499     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 500     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 501
 502     FarSetOwner16( hModule, hModule );
 503     pModule = (NE_MODULE *)GlobalLock16( hModule );
 504     memcpy( pModule, &ne_header, sizeof(ne_header) );
 505     pModule->count = 0;
 506     /* check *programs* for default minimal stack size */
 507     if ( (!(pModule->flags & NE_FFLAGS_LIBMODULE))
 508          && (pModule->stack_size < 0x1400) )
 509         pModule->stack_size = 0x1400;
 510     pModule->module32 = 0;
 511     pModule->self = hModule;
 512     pModule->self_loading_sel = 0;
 513     pData = (BYTE *)(pModule + 1);
 514
 515     /* Clear internal Wine flags in case they are set in the EXE file */
 516
 517     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 518
 519     /* Read the fast-load area */
 520
 521     if (ne_header.ne_flagsothers & NE_AFLAGS_FASTLOAD)
 522     {
 523         fastload_offset=ne_header.ne_pretthunks << ne_header.ne_align;
 524         fastload_length=ne_header.ne_psegrefbytes << ne_header.ne_align;
 525         TRACE("Using fast-load area offset=%x len=%d\n",
 526                         fastload_offset, fastload_length );
 527         if ((fastload = HeapAlloc( GetProcessHeap(), 0, fastload_length )) != NULL)
 528         {
 529             if (!read_data( handle, fastload_offset, fastload, fastload_length))
 530             {
 531                 HeapFree( GetProcessHeap(), 0, fastload );
 532                 WARN("Error reading fast-load area!\n");
 533                 fastload = NULL;
 534             }
 535         }
 536     }
 537
 538     /* Get the segment table */
 539
 540     pModule->seg_table = pData - (BYTE *)pModule;
 541     buffer = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cseg *
 542                                       sizeof(struct ne_segment_table_entry_s));
 543     if (buffer)
 544     {
 545         int i;
 546         struct ne_segment_table_entry_s *pSeg;
 547
 548         if (!READ( mz_header.e_lfanew + ne_header.ne_segtab,
 549              ne_header.ne_cseg * sizeof(struct ne_segment_table_entry_s),
 550              buffer ))
 551         {
 552             HeapFree( GetProcessHeap(), 0, buffer );
 553             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 554             GlobalFree16( hModule );
 555             return (HMODULE16)11;  /* invalid exe */
 556         }
 557         pSeg = (struct ne_segment_table_entry_s *)buffer;
 558         for (i = ne_header.ne_cseg; i > 0; i--, pSeg++)
 559         {
 560             memcpy( pData, pSeg, sizeof(*pSeg) );
 561             pData += sizeof(SEGTABLEENTRY);
 562         }
 563         HeapFree( GetProcessHeap(), 0, buffer );
 564     }
 565     else
 566     {
 567         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 568         GlobalFree16( hModule );
 569         return (HMODULE16)11;  /* invalid exe */
 570     }
 571
 572     /* Get the resource table */
 573
 574     if (ne_header.ne_rsrctab < ne_header.ne_restab)
 575     {
 576         pModule->res_table = pData - (BYTE *)pModule;
 577         if (!READ(mz_header.e_lfanew + ne_header.ne_rsrctab,
 578                   ne_header.ne_restab - ne_header.ne_rsrctab,
 579                   pData ))
 580             return (HMODULE16)11;  /* invalid exe */
 581         pData += ne_header.ne_restab - ne_header.ne_rsrctab;
 582         NE_InitResourceHandler( pModule );
 583     }
 584     else pModule->res_table = 0;  /* No resource table */
 585
 586     /* Get the resident names table */
 587
 588     pModule->name_table = pData - (BYTE *)pModule;
 589     if (!READ( mz_header.e_lfanew + ne_header.ne_restab,
 590                ne_header.ne_modtab - ne_header.ne_restab,
 591                pData ))
 592     {
 593         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 594         GlobalFree16( hModule );
 595         return (HMODULE16)11;  /* invalid exe */
 596     }
 597     pData += ne_header.ne_modtab - ne_header.ne_restab;
 598
 599     /* Get the module references table */
 600
 601     if (ne_header.ne_cmod > 0)
 602     {
 603         pModule->modref_table = pData - (BYTE *)pModule;
 604         if (!READ( mz_header.e_lfanew + ne_header.ne_modtab,
 605                   ne_header.ne_cmod * sizeof(WORD),
 606                   pData ))
 607         {
 608             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 609             GlobalFree16( hModule );
 610             return (HMODULE16)11;  /* invalid exe */
 611         }
 612         pData += ne_header.ne_cmod * sizeof(WORD);
 613     }
 614     else pModule->modref_table = 0;  /* No module references */
 615
 616     /* Get the imported names table */
 617
 618     pModule->import_table = pData - (BYTE *)pModule;
 619     if (!READ( mz_header.e_lfanew + ne_header.ne_imptab,
 620                ne_header.ne_enttab - ne_header.ne_imptab,
 621                pData ))
 622     {
 623         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 624         GlobalFree16( hModule );
 625         return (HMODULE16)11;  /* invalid exe */
 626     }
 627     pData += ne_header.ne_enttab - ne_header.ne_imptab;
 628
 629     /* Load entry table, convert it to the optimized version used by Windows */
 630
 631     if ((pTempEntryTable = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cbenttab)) != NULL)
 632     {
 633         BYTE nr_entries, type, *s;
 634
 635         TRACE("Converting entry table.\n");
 636         pModule->entry_table = pData - (BYTE *)pModule;
 637         if (!READ( mz_header.e_lfanew + ne_header.ne_enttab,
 638                    ne_header.ne_cbenttab, pTempEntryTable ))
 639         {
 640             HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 641             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 642             GlobalFree16( hModule );
 643             return (HMODULE16)11;  /* invalid exe */
 644         }
 645
 646         s = pTempEntryTable;
 647         TRACE("entry table: offs %04x, len %04x, entries %d\n", ne_header.ne_enttab, ne_header.ne_cbenttab, *s);
 648
 649         bundle = (ET_BUNDLE *)pData;
 650         TRACE("first bundle: %p\n", bundle);
 651         memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 652         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 653
 654         while ((nr_entries = *s++))
 655         {
 656             if ((type = *s++))
 657             {
 658                 bundle->last += nr_entries;
 659                 if (type == 0xff)
 660                 while (nr_entries--)
 661                 {
 662                     entry->type   = type;
 663                     entry->flags  = *s++;
 664                     s += 2;
 665                     entry->segnum = *s++;
 666                     entry->offs   = *(WORD *)s; s += 2;
 667                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 668                     entry++;
 669                 }
 670                 else
 671                 while (nr_entries--)
 672                 {
 673                     entry->type   = type;
 674                     entry->flags  = *s++;
 675                     entry->segnum = type;
 676                     entry->offs   = *(WORD *)s; s += 2;
 677                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 678                     entry++;
 679                 }
 680             }
 681             else
 682             {
 683                 if (bundle->first == bundle->last)
 684                 {
 685                     bundle->first += nr_entries;
 686                     bundle->last += nr_entries;
 687                 }
 688                 else
 689                 {
 690                     oldbundle = bundle;
 691                     oldbundle->next = ((int)entry - (int)pModule);
 692                     bundle = (ET_BUNDLE *)entry;
 693                     TRACE("new bundle: %p\n", bundle);
 694                     bundle->first = bundle->last =
 695                         oldbundle->last + nr_entries;
 696                     bundle->next = 0;
 697                     (BYTE *)entry += sizeof(ET_BUNDLE);
 698                 }
 699             }
 700         }
 701         HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 702     }
 703     else
 704     {
 705         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 706         GlobalFree16( hModule );
 707         return (HMODULE16)11;  /* invalid exe */
 708     }
 709
 710     pData += ne_header.ne_cbenttab + sizeof(ET_BUNDLE) +
 711         2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6);
 712
 713     if ((DWORD)entry > (DWORD)pData)
 714        ERR("converted entry table bigger than reserved space !!!\nentry: %p, pData: %p. Please report !\n", entry, pData);
 715
 716     /* Store the filename information */
 717
 718     pModule->fileinfo = pData - (BYTE *)pModule;
 719     size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 720     ofs = (OFSTRUCT *)pData;
 721     ofs->cBytes = size - 1;
 722     ofs->fFixedDisk = 1;
 723     strcpy( ofs->szPathName, path );
 724     pData += size;
 725
 726     /* Free the fast-load area */
 727
 728 #undef READ
 729     if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 730
 731     /* Get the non-resident names table */
 732
 733     if (ne_header.ne_cbnrestab)
 734     {
 735         pModule->nrname_handle = GlobalAlloc16( 0, ne_header.ne_cbnrestab );
 736         if (!pModule->nrname_handle)
 737         {
 738             GlobalFree16( hModule );
 739             return (HMODULE16)11;  /* invalid exe */
 740         }
 741         FarSetOwner16( pModule->nrname_handle, hModule );
 742         buffer = GlobalLock16( pModule->nrname_handle );
 743         if (!read_data( handle, ne_header.ne_nrestab, buffer, ne_header.ne_cbnrestab ))
 744         {
 745             GlobalFree16( pModule->nrname_handle );
 746             GlobalFree16( hModule );
 747             return (HMODULE16)11;  /* invalid exe */
 748         }
 749     }
 750     else pModule->nrname_handle = 0;
 751
 752     /* Allocate a segment for the implicitly-loaded DLLs */
 753
 754     if (pModule->modref_count)
 755     {
 756         pModule->dlls_to_init = GlobalAlloc16( GMEM_ZEROINIT,
 757                                                (pModule->modref_count+1)*sizeof(HMODULE16) );
 758         if (!pModule->dlls_to_init)
 759         {
 760             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 761             GlobalFree16( hModule );
 762             return (HMODULE16)11;  /* invalid exe */
 763         }
 764         FarSetOwner16( pModule->dlls_to_init, hModule );
 765     }
 766     else pModule->dlls_to_init = 0;
 767
 768     NE_RegisterModule( pModule );
 769     SNOOP16_RegisterDLL(pModule,path);
 770     return hModule;
 771 }
 772
 773
 774 /***********************************************************************
 775  *           NE_LoadDLLs
 776  *
 777  * Load all DLLs implicitly linked to a module.
 778  */
 779 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 780 {
 781     int i;
 782     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 783     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 784
 785     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 786     {
 787         char buffer[260], *p;
 788         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 789         memcpy( buffer, pstr + 1, *pstr );
 790         *(buffer + *pstr) = 0; /* terminate it */
 791
 792         TRACE("Loading '%s'\n", buffer );
 793         if (!(*pModRef = GetModuleHandle16( buffer )))
 794         {
 795             /* If the DLL is not loaded yet, load it and store */
 796             /* its handle in the list of DLLs to initialize.   */
 797             HMODULE16 hDLL;
 798
 799             /* Append .DLL to name if no extension present */
 800             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 801                     strcat( buffer, ".DLL" );
 802
 803             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 804             {
 805                 /* FIXME: cleanup what was done */
 806
 807                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 808                      buffer, *((BYTE*)pModule + pModule->name_table),
 809                      (char *)pModule + pModule->name_table + 1, hDLL );
 810                 return FALSE;
 811             }
 812             *pModRef = GetExePtr( hDLL );
 813             *pDLLs++ = *pModRef;
 814         }
 815         else  /* Increment the reference count of the DLL */
 816         {
 817             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 818             if (pOldDLL) pOldDLL->count++;
 819         }
 820     }
 821     return TRUE;
 822 }
 823
 824
 825 /**********************************************************************
 826  *          NE_DoLoadModule
 827  *
 828  * Load first instance of NE module from file.
 829  *
 830  * pModule must point to a module structure prepared by NE_LoadExeHeader.
 831  * This routine must never be called twice on a module.
 832  *
 833  */
 834 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
 835 {
 836     /* Allocate the segments for this module */
 837
 838     if (!NE_CreateAllSegments( pModule ))
 839         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
 840
 841     /* Load the referenced DLLs */
 842
 843     if (!NE_LoadDLLs( pModule ))
 844         return ERROR_FILE_NOT_FOUND; /* 2 */
 845
 846     /* Load the segments */
 847
 848     NE_LoadAllSegments( pModule );
 849
 850     /* Make sure the usage count is 1 on the first loading of  */
 851     /* the module, even if it contains circular DLL references */
 852
 853     pModule->count = 1;
 854
 855     return NE_GetInstance( pModule );
 856 }
 857
 858 /**********************************************************************
 859  *          NE_LoadModule
 860  *
 861  * Load first instance of NE module. (Note: caller is responsible for
 862  * ensuring the module isn't already loaded!)
 863  *
 864  * If the module turns out to be an executable module, only a
 865  * handle to a module stub is returned; this needs to be initialized
 866  * by calling NE_DoLoadModule later, in the context of the newly
 867  * created process.
 868  *
 869  * If lib_only is TRUE, however, the module is perforce treated
 870  * like a DLL module, even if it is an executable module.
 871  *
 872  */
 873 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
 874 {
 875     NE_MODULE *pModule;
 876     HMODULE16 hModule;
 877     HINSTANCE16 hInstance;
 878     HFILE16 hFile;
 879     OFSTRUCT ofs;
 880
 881     /* Open file */
 882     if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
 883         return (HMODULE16)2;  /* File not found */
 884
 885     hModule = NE_LoadExeHeader( DosFileHandleToWin32Handle(hFile), ofs.szPathName );
 886     _lclose16( hFile );
 887     if (hModule < 32) return hModule;
 888
 889     pModule = NE_GetPtr( hModule );
 890     if ( !pModule ) return hModule;
 891
 892     if ( !lib_only && !( pModule->flags & NE_FFLAGS_LIBMODULE ) )
 893         return hModule;
 894
 895     hInstance = NE_DoLoadModule( pModule );
 896     if ( hInstance < 32 )
 897     {
 898         /* cleanup ... */
 899         NE_FreeModule( hModule, 0 );
 900     }
 901
 902     return hInstance;
 903 }
 904
 905
 906 /***********************************************************************
 907  *           NE_DoLoadBuiltinModule
 908  *
 909  * Load a built-in Win16 module. Helper function for NE_LoadBuiltinModule.
 910  */
 911 static HMODULE16 NE_DoLoadBuiltinModule( const BUILTIN16_DESCRIPTOR *descr )
 912 {
 913     NE_MODULE *pModule;
 914     int minsize;
 915     SEGTABLEENTRY *pSegTable;
 916     HMODULE16 hModule;
 917
 918     hModule = GLOBAL_CreateBlock( GMEM_MOVEABLE, descr->module_start,
 919                                   descr->module_size, 0, WINE_LDT_FLAGS_DATA );
 920     if (!hModule) return 0;
 921     FarSetOwner16( hModule, hModule );
 922
 923     pModule = (NE_MODULE *)GlobalLock16( hModule );
 924     pModule->self = hModule;
 925     /* NOTE: (Ab)use the hRsrcMap parameter for resource data pointer */
 926     pModule->hRsrcMap = (void *)descr->rsrc;
 927
 928     /* Allocate the code segment */
 929
 930     pSegTable = NE_SEG_TABLE( pModule );
 931     pSegTable->hSeg = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
 932                                           pSegTable->minsize, hModule,
 933                                           WINE_LDT_FLAGS_CODE|WINE_LDT_FLAGS_32BIT );
 934     if (!pSegTable->hSeg) return 0;
 935     patch_code_segment( descr->code_start );
 936     pSegTable++;
 937
 938     /* Allocate the data segment */
 939
 940     minsize = pSegTable->minsize ? pSegTable->minsize : 0x10000;
 941     minsize += pModule->heap_size;
 942     if (minsize > 0x10000) minsize = 0x10000;
 943     pSegTable->hSeg = GlobalAlloc16( GMEM_FIXED, minsize );
 944     if (!pSegTable->hSeg) return 0;
 945     FarSetOwner16( pSegTable->hSeg, hModule );
 946     if (pSegTable->minsize) memcpy( GlobalLock16( pSegTable->hSeg ),
 947                                     descr->data_start, pSegTable->minsize);
 948     if (pModule->heap_size)
 949         LocalInit16( GlobalHandleToSel16(pSegTable->hSeg), pSegTable->minsize, minsize );
 950
 951     if (descr->rsrc) NE_InitResourceHandler(pModule);
 952
 953     NE_RegisterModule( pModule );
 954
 955     /* make sure the 32-bit library containing this one is loaded too */
 956     LoadLibraryA( descr->owner );
 957
 958     return hModule;
 959 }
 960
 961
 962 /***********************************************************************
 963  *           NE_LoadBuiltinModule
 964  *
 965  * Load a built-in module.
 966  */
 967 static HMODULE16 NE_LoadBuiltinModule( LPCSTR name )
 968 {
 969     const BUILTIN16_DESCRIPTOR *descr;
 970     char error[256], dllname[20], *p;
 971     int file_exists;
 972     void *handle;
 973
 974     /* Fix the name in case we have a full path and extension */
 975
 976     if ((p = strrchr( name, '\\' ))) name = p + 1;
 977     if ((p = strrchr( name, '/' ))) name = p + 1;
 978
 979     if (strlen(name) >= sizeof(dllname)-4) return (HMODULE16)2;
 980
 981     strcpy( dllname, name );
 982     p = strrchr( dllname, '.' );
 983     if (!p) strcat( dllname, ".dll" );
 984     for (p = dllname; *p; p++) *p = FILE_tolower(*p);
 985
 986     if ((descr = find_dll_descr( dllname )))
 987         return NE_DoLoadBuiltinModule( descr );
 988
 989     if ((handle = wine_dll_load( dllname, error, sizeof(error), &file_exists )))
 990     {
 991         if ((descr = find_dll_descr( dllname )))
 992             return NE_DoLoadBuiltinModule( descr );
 993
 994         ERR( "loaded .so but dll %s still not found\n", dllname );
 995     }
 996     else
 997     {
 998         if (!file_exists) WARN("cannot open .so lib for 16-bit builtin %s: %s\n", name, error);
 999         else ERR("failed to load .so lib for 16-bit builtin %s: %s\n", name, error );
1000     }
1001     return (HMODULE16)2;
1002 }
1003
1004
1005 /**********************************************************************
1006  *          MODULE_LoadModule16
1007  *
1008  * Load a NE module in the order of the loadorder specification.
1009  * The caller is responsible that the module is not loaded already.
1010  *
1011  */
1012 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
1013 {
1014     HINSTANCE16 hinst = 2;
1015     enum loadorder_type loadorder[LOADORDER_NTYPES];
1016     int i;
1017     const char *filetype = "";
1018     const char *ptr;
1019
1020     /* strip path information */
1021
1022     if (libname[0] && libname[1] == ':') libname += 2;  /* strip drive specification */
1023     if ((ptr = strrchr( libname, '\\' ))) libname = ptr + 1;
1024     if ((ptr = strrchr( libname, '/' ))) libname = ptr + 1;
1025
1026     if (is_builtin_present(libname))
1027     {
1028         TRACE( "forcing loadorder to builtin for %s\n", debugstr_a(libname) );
1029         /* force builtin loadorder since the dll is already in memory */
1030         loadorder[0] = LOADORDER_BI;
1031         loadorder[1] = LOADORDER_INVALID;
1032     }
1033     else MODULE_GetLoadOrder(loadorder, libname, FALSE);
1034
1035     for(i = 0; i < LOADORDER_NTYPES; i++)
1036     {
1037         if (loadorder[i] == LOADORDER_INVALID) break;
1038
1039         switch(loadorder[i])
1040         {
1041         case LOADORDER_DLL:
1042             TRACE("Trying native dll '%s'\n", libname);
1043             hinst = NE_LoadModule(libname, lib_only);
1044             filetype = "native";
1045             break;
1046
1047         case LOADORDER_BI:
1048             TRACE("Trying built-in '%s'\n", libname);
1049             hinst = NE_LoadBuiltinModule(libname);
1050             filetype = "builtin";
1051             break;
1052
1053         default:
1054             hinst = 2;
1055             break;
1056         }
1057
1058         if(hinst >= 32)
1059         {
1060             TRACE_(loaddll)("Loaded module '%s' : %s\n", libname, filetype);
1061             if(!implicit)
1062             {
1063                 HMODULE16 hModule;
1064                 NE_MODULE *pModule;
1065
1066                 hModule = GetModuleHandle16(libname);
1067                 if(!hModule)
1068                 {
1069                     ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle. Filename too long ?\n",
1070                         libname, hinst);
1071                     return 6;   /* ERROR_INVALID_HANDLE seems most appropriate */
1072                 }
1073
1074                 pModule = NE_GetPtr(hModule);
1075                 if(!pModule)
1076                 {
1077                     ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
1078                         libname, hinst);
1079                     return 6;   /* ERROR_INVALID_HANDLE seems most appropriate */
1080                 }
1081
1082                 TRACE("Loaded module '%s' at 0x%04x.\n", libname, hinst);
1083
1084                 /*
1085                  * Call initialization routines for all loaded DLLs. Note that
1086                  * when we load implicitly linked DLLs this will be done by InitTask().
1087                  */
1088                 if(pModule->flags & NE_FFLAGS_LIBMODULE)
1089                 {
1090                     NE_InitializeDLLs(hModule);
1091                     NE_DllProcessAttach(hModule);
1092                 }
1093             }
1094             return hinst;
1095         }
1096
1097         if(hinst != 2)
1098         {
1099             /* We quit searching when we get another error than 'File not found' */
1100             break;
1101         }
1102     }
1103     return hinst;       /* The last error that occurred */
1104 }
1105
1106
1107 /**********************************************************************
1108  *          NE_CreateThread
1109  *
1110  * Create the thread for a 16-bit module.
1111  */
1112 static HINSTANCE16 NE_CreateThread( NE_MODULE *pModule, WORD cmdShow, LPCSTR cmdline )
1113 {
1114     HANDLE hThread;
1115     TDB *pTask;
1116     HTASK16 hTask;
1117     HINSTANCE16 instance = 0;
1118
1119     if (!(hTask = TASK_SpawnTask( pModule, cmdShow, cmdline + 1, *cmdline, &hThread )))
1120         return 0;
1121
1122     /* Post event to start the task */
1123     PostEvent16( hTask );
1124
1125     /* Wait until we get the instance handle */
1126     do
1127     {
1128         DirectedYield16( hTask );
1129         if (!IsTask16( hTask ))  /* thread has died */
1130         {
1131             DWORD exit_code;
1132             WaitForSingleObject( hThread, INFINITE );
1133             GetExitCodeThread( hThread, &exit_code );
1134             CloseHandle( hThread );
1135             return exit_code;
1136         }
1137         if (!(pTask = GlobalLock16( hTask ))) break;
1138         instance = pTask->hInstance;
1139         GlobalUnlock16( hTask );
1140     } while (!instance);
1141
1142     CloseHandle( hThread );
1143     return instance;
1144 }
1145
1146
1147 /**********************************************************************
1148  *          LoadModule      (KERNEL.45)
1149  */
1150 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
1151 {
1152     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
1153     LOADPARAMS16 *params;
1154     HMODULE16 hModule;
1155     NE_MODULE *pModule;
1156     LPSTR cmdline;
1157     WORD cmdShow;
1158
1159     /* Load module */
1160
1161     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1162     {
1163         /* Special case: second instance of an already loaded NE module */
1164
1165         if ( !( pModule = NE_GetPtr( hModule ) ) ) return (HINSTANCE16)11;
1166         if ( pModule->module32 ) return (HINSTANCE16)21;
1167
1168         /* Increment refcount */
1169
1170         pModule->count++;
1171     }
1172     else
1173     {
1174         /* Main case: load first instance of NE module */
1175
1176         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1177             return hModule;
1178
1179         if ( !(pModule = NE_GetPtr( hModule )) )
1180             return (HINSTANCE16)11;
1181     }
1182
1183     /* If library module, we just retrieve the instance handle */
1184
1185     if ( ( pModule->flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1186         return NE_GetInstance( pModule );
1187
1188     /*
1189      *  At this point, we need to create a new process.
1190      *
1191      *  pModule points either to an already loaded module, whose refcount
1192      *  has already been incremented (to avoid having the module vanish
1193      *  in the meantime), or else to a stub module which contains only header
1194      *  information.
1195      */
1196     params = (LOADPARAMS16 *)paramBlock;
1197     cmdShow = ((WORD *)MapSL(params->showCmd))[1];
1198     cmdline = MapSL( params->cmdLine );
1199     return NE_CreateThread( pModule, cmdShow, cmdline );
1200 }
1201
1202
1203 /**********************************************************************
1204  *          NE_StartTask
1205  *
1206  * Startup code for a new 16-bit task.
1207  */
1208 DWORD NE_StartTask(void)
1209 {
1210     TDB *pTask = TASK_GetCurrent();
1211     NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
1212     HINSTANCE16 hInstance, hPrevInstance;
1213     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1214     WORD sp;
1215
1216     if ( pModule->count > 0 )
1217     {
1218         /* Second instance of an already loaded NE module */
1219         /* Note that the refcount was already incremented by the parent */
1220
1221         hPrevInstance = NE_GetInstance( pModule );
1222
1223         if ( pModule->dgroup )
1224             if ( NE_CreateSegment( pModule, pModule->dgroup ) )
1225                 NE_LoadSegment( pModule, pModule->dgroup );
1226
1227         hInstance = NE_GetInstance( pModule );
1228         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->dgroup, hPrevInstance);
1229
1230     }
1231     else
1232     {
1233         /* Load first instance of NE module */
1234
1235         pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1236
1237         hInstance = NE_DoLoadModule( pModule );
1238         hPrevInstance = 0;
1239     }
1240
1241     if ( hInstance >= 32 )
1242     {
1243         CONTEXT86 context;
1244
1245         /* Enter instance handles into task struct */
1246
1247         pTask->hInstance = hInstance;
1248         pTask->hPrevInstance = hPrevInstance;
1249
1250         /* Use DGROUP for 16-bit stack */
1251
1252         if (!(sp = pModule->sp))
1253             sp = pSegTable[pModule->ss-1].minsize + pModule->stack_size;
1254         sp &= ~1;
1255         sp -= sizeof(STACK16FRAME);
1256         pTask->teb->cur_stack = MAKESEGPTR( GlobalHandleToSel16(hInstance), sp );
1257
1258         /* Registers at initialization must be:
1259          * ax   zero
1260          * bx   stack size in bytes
1261          * cx   heap size in bytes
1262          * si   previous app instance
1263          * di   current app instance
1264          * bp   zero
1265          * es   selector to the PSP
1266          * ds   dgroup of the application
1267          * ss   stack selector
1268          * sp   top of the stack
1269          */
1270         memset( &context, 0, sizeof(context) );
1271         context.SegCs  = GlobalHandleToSel16(pSegTable[pModule->cs - 1].hSeg);
1272         context.SegDs  = GlobalHandleToSel16(pTask->hInstance);
1273         context.SegEs  = pTask->hPDB;
1274         context.Eip    = pModule->ip;
1275         context.Ebx    = pModule->stack_size;
1276         context.Ecx    = pModule->heap_size;
1277         context.Edi    = pTask->hInstance;
1278         context.Esi    = pTask->hPrevInstance;
1279
1280         /* Now call 16-bit entry point */
1281
1282         TRACE("Starting main program: cs:ip=%04lx:%04lx ds=%04lx ss:sp=%04x:%04x\n",
1283               context.SegCs, context.Eip, context.SegDs,
1284               SELECTOROF(pTask->teb->cur_stack),
1285               OFFSETOF(pTask->teb->cur_stack) );
1286
1287         WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
1288         ExitThread( LOWORD(context.Eax) );
1289     }
1290     return hInstance;  /* error code */
1291 }
1292
1293 /***********************************************************************
1294  *           LoadLibrary     (KERNEL.95)
1295  *           LoadLibrary16   (KERNEL32.35)
1296  */
1297 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1298 {
1299     return LoadModule16(libname, (LPVOID)-1 );
1300 }
1301
1302
1303 /**********************************************************************
1304  *          MODULE_CallWEP
1305  *
1306  * Call a DLL's WEP, allowing it to shut down.
1307  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1308  */
1309 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1310 {
1311     BOOL16 ret;
1312     FARPROC16 WEP = GetProcAddress16( hModule, "WEP" );
1313     if (!WEP) return FALSE;
1314
1315     __TRY
1316     {
1317         WORD args[1];
1318         DWORD dwRet;
1319
1320         args[0] = WEP_FREE_DLL;
1321         WOWCallback16Ex( (DWORD)WEP, WCB16_PASCAL, sizeof(args), args, &dwRet );
1322         ret = LOWORD(dwRet);
1323     }
1324     __EXCEPT(page_fault)
1325     {
1326         WARN("Page fault\n");
1327         ret = 0;
1328     }
1329     __ENDTRY
1330
1331     return ret;
1332 }
1333
1334
1335 /**********************************************************************
1336  *          NE_FreeModule
1337  *
1338  * Implementation of FreeModule16().
1339  */
1340 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1341 {
1342     HMODULE16 *hPrevModule;
1343     NE_MODULE *pModule;
1344     HMODULE16 *pModRef;
1345     int i;
1346
1347     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1348     hModule = pModule->self;
1349
1350     TRACE("%04x count %d\n", hModule, pModule->count );
1351
1352     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1353     else pModule->count = 0;
1354
1355     if (pModule->flags & NE_FFLAGS_BUILTIN)
1356         return FALSE;  /* Can't free built-in module */
1357
1358     if (call_wep && !(pModule->flags & NE_FFLAGS_WIN32))
1359     {
1360         /* Free the objects owned by the DLL module */
1361         NE_CallUserSignalProc( hModule, USIG16_DLL_UNLOAD );
1362
1363         if (pModule->flags & NE_FFLAGS_LIBMODULE)
1364             MODULE_CallWEP( hModule );
1365         else
1366             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1367     }
1368
1369
1370     /* Clear magic number just in case */
1371
1372     pModule->magic = pModule->self = 0;
1373
1374       /* Remove it from the linked list */
1375
1376     hPrevModule = &hFirstModule;
1377     while (*hPrevModule && (*hPrevModule != hModule))
1378     {
1379         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1380     }
1381     if (*hPrevModule) *hPrevModule = pModule->next;
1382
1383     /* Free the referenced modules */
1384
1385     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
1386     for (i = 0; i < pModule->modref_count; i++, pModRef++)
1387     {
1388         NE_FreeModule( *pModRef, call_wep );
1389     }
1390
1391     /* Free the module storage */
1392
1393     GlobalFreeAll16( hModule );
1394
1395     /* Remove module from cache */
1396
1397     if (pCachedModule == pModule) pCachedModule = NULL;
1398     return TRUE;
1399 }
1400
1401
1402 /**********************************************************************
1403  *          FreeModule    (KERNEL.46)
1404  */
1405 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1406 {
1407     return NE_FreeModule( hModule, TRUE );
1408 }
1409
1410
1411 /***********************************************************************
1412  *           FreeLibrary     (KERNEL.96)
1413  *           FreeLibrary16   (KERNEL32.36)
1414  */
1415 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1416 {
1417     TRACE("%04x\n", handle );
1418     FreeModule16( handle );
1419 }
1420
1421
1422 /**********************************************************************
1423  *          GetModuleName    (KERNEL.27)
1424  */
1425 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1426 {
1427     NE_MODULE *pModule;
1428     BYTE *p;
1429
1430     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1431     p = (BYTE *)pModule + pModule->name_table;
1432     if (count > *p) count = *p + 1;
1433     if (count > 0)
1434     {
1435         memcpy( buf, p + 1, count - 1 );
1436         buf[count-1] = '\0';
1437     }
1438     return TRUE;
1439 }
1440
1441
1442 /**********************************************************************
1443  *          GetModuleUsage    (KERNEL.48)
1444  */
1445 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1446 {
1447     NE_MODULE *pModule = NE_GetPtr( hModule );
1448     return pModule ? pModule->count : 0;
1449 }
1450
1451
1452 /**********************************************************************
1453  *          GetExpWinVer    (KERNEL.167)
1454  */
1455 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1456 {
1457     NE_MODULE *pModule = NE_GetPtr( hModule );
1458     if ( !pModule ) return 0;
1459
1460     /*
1461      * For built-in modules, fake the expected version the module should
1462      * have according to the Windows version emulated by Wine
1463      */
1464     if ( !pModule->expected_version )
1465     {
1466         OSVERSIONINFOA versionInfo;
1467         versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1468
1469         if ( GetVersionExA( &versionInfo ) )
1470             pModule->expected_version =
1471                      (versionInfo.dwMajorVersion & 0xff) << 8
1472                    | (versionInfo.dwMinorVersion & 0xff);
1473     }
1474
1475     return pModule->expected_version;
1476 }
1477
1478
1479 /***********************************************************************
1480  *           WinExec     (KERNEL.166)
1481  */
1482 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
1483 {
1484     LPCSTR p, args = NULL;
1485     LPCSTR name_beg, name_end;
1486     LPSTR name, cmdline;
1487     int arglen;
1488     HINSTANCE16 ret;
1489     char buffer[MAX_PATH];
1490
1491     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
1492     {
1493         name_beg = lpCmdLine+1;
1494         p = strchr ( lpCmdLine+1, '"' );
1495         if (p)
1496         {
1497             name_end = p;
1498             args = strchr ( p, ' ' );
1499         }
1500         else /* yes, even valid with trailing '"' missing */
1501             name_end = lpCmdLine+strlen(lpCmdLine);
1502     }
1503     else
1504     {
1505         name_beg = lpCmdLine;
1506         args = strchr( lpCmdLine, ' ' );
1507         name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
1508     }
1509
1510     if ((name_beg == lpCmdLine) && (!args))
1511     { /* just use the original cmdline string as file name */
1512         name = (LPSTR)lpCmdLine;
1513     }
1514     else
1515     {
1516         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
1517             return ERROR_NOT_ENOUGH_MEMORY;
1518         memcpy( name, name_beg, name_end - name_beg );
1519         name[name_end - name_beg] = '\0';
1520     }
1521
1522     if (args)
1523     {
1524         args++;
1525         arglen = strlen(args);
1526         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
1527         cmdline[0] = (BYTE)arglen;
1528         strcpy( cmdline + 1, args );
1529     }
1530     else
1531     {
1532         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
1533         cmdline[0] = cmdline[1] = 0;
1534     }
1535
1536     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
1537
1538     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
1539     {
1540         LOADPARAMS16 params;
1541         WORD showCmd[2];
1542         showCmd[0] = 2;
1543         showCmd[1] = nCmdShow;
1544
1545         params.hEnvironment = 0;
1546         params.cmdLine = MapLS( cmdline );
1547         params.showCmd = MapLS( showCmd );
1548         params.reserved = 0;
1549
1550         ret = LoadModule16( buffer, &params );
1551         UnMapLS( params.cmdLine );
1552         UnMapLS( params.showCmd );
1553     }
1554     else ret = GetLastError();
1555
1556     HeapFree( GetProcessHeap(), 0, cmdline );
1557     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
1558
1559     if (ret == 21)  /* 32-bit module */
1560     {
1561         DWORD count;
1562         ReleaseThunkLock( &count );
1563         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
1564         RestoreThunkLock( count );
1565     }
1566     return ret;
1567 }
1568
1569 /**********************************************************************
1570  *          GetModuleHandle    (KERNEL.47)
1571  *
1572  * Find a module from a module name.
1573  *
1574  * NOTE: The current implementation works the same way the Windows 95 one
1575  *       does. Do not try to 'fix' it, fix the callers.
1576  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1577  *       + It does not care about paths, just about basenames. (same as Windows)
1578  *
1579  * RETURNS
1580  *   LOWORD:
1581  *      the win16 module handle if found
1582  *      0 if not
1583  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1584  *      Always hFirstModule
1585  */
1586 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1587 {
1588     if (HIWORD(name) == 0)
1589         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1590     return MAKELONG(GetModuleHandle16( MapSL(name)), hFirstModule );
1591 }
1592
1593 /**********************************************************************
1594  *          NE_GetModuleByFilename
1595  */
1596 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1597 {
1598     HMODULE16   hModule;
1599     LPSTR       s, p;
1600     BYTE        len, *name_table;
1601     char        tmpstr[MAX_PATH];
1602     NE_MODULE *pModule;
1603
1604     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1605
1606     /* If the base filename of 'name' matches the base filename of the module
1607      * filename of some module (case-insensitive compare):
1608      * Return its handle.
1609      */
1610
1611     /* basename: search backwards in passed name to \ / or : */
1612     s = tmpstr + strlen(tmpstr);
1613     while (s > tmpstr)
1614     {
1615         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1616                 break;
1617         s--;
1618     }
1619
1620     /* search this in loaded filename list */
1621     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1622     {
1623         char            *loadedfn;
1624         OFSTRUCT        *ofs;
1625
1626         pModule = NE_GetPtr( hModule );
1627         if (!pModule) break;
1628         if (!pModule->fileinfo) continue;
1629         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1630
1631         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1632         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1633         /* basename: search backwards in pathname to \ / or : */
1634         while (loadedfn > (char*)ofs->szPathName)
1635         {
1636             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1637                     break;
1638             loadedfn--;
1639         }
1640         /* case insensitive compare ... */
1641         if (!FILE_strcasecmp(loadedfn, s))
1642             return hModule;
1643     }
1644     /* If basename (without ext) matches the module name of a module:
1645      * Return its handle.
1646      */
1647
1648     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1649     len = strlen(s);
1650
1651     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1652     {
1653         pModule = NE_GetPtr( hModule );
1654         if (!pModule) break;
1655         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1656
1657         name_table = (BYTE *)pModule + pModule->name_table;
1658         if ((*name_table == len) && !FILE_strncasecmp(s, name_table+1, len))
1659             return hModule;
1660     }
1661
1662     return 0;
1663 }
1664
1665 /***********************************************************************
1666  *           GetProcAddress16   (KERNEL32.37)
1667  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1668  */
1669 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1670 {
1671     if (!hModule) return 0;
1672     if (HIWORD(hModule))
1673     {
1674         WARN("hModule is Win32 handle (%p)\n", hModule );
1675         return 0;
1676     }
1677     return GetProcAddress16( LOWORD(hModule), name );
1678 }
1679
1680 /**********************************************************************
1681  *          ModuleFirst    (TOOLHELP.59)
1682  */
1683 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1684 {
1685     lpme->wNext = hFirstModule;
1686     return ModuleNext16( lpme );
1687 }
1688
1689
1690 /**********************************************************************
1691  *          ModuleNext    (TOOLHELP.60)
1692  */
1693 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1694 {
1695     NE_MODULE *pModule;
1696     char *name;
1697
1698     if (!lpme->wNext) return FALSE;
1699     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1700     name = (char *)pModule + pModule->name_table;
1701     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1702     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1703     lpme->hModule = lpme->wNext;
1704     lpme->wcUsage = pModule->count;
1705     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1706     lpme->wNext = pModule->next;
1707     return TRUE;
1708 }
1709
1710
1711 /**********************************************************************
1712  *          ModuleFindName    (TOOLHELP.61)
1713  */
1714 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1715 {
1716     lpme->wNext = GetModuleHandle16( name );
1717     return ModuleNext16( lpme );
1718 }
1719
1720
1721 /**********************************************************************
1722  *          ModuleFindHandle    (TOOLHELP.62)
1723  */
1724 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1725 {
1726     hModule = GetExePtr( hModule );
1727     lpme->wNext = hModule;
1728     return ModuleNext16( lpme );
1729 }
1730
1731
1732 /***************************************************************************
1733  *          IsRomModule    (KERNEL.323)
1734  */
1735 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
1736 {
1737     return FALSE;
1738 }
1739
1740 /***************************************************************************
1741  *          IsRomFile    (KERNEL.326)
1742  */
1743 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
1744 {
1745     return FALSE;
1746 }
1747
1748 /***********************************************************************
1749  *           create_dummy_module
1750  *
1751  * Create a dummy NE module for Win32 or Winelib.
1752  */
1753 static HMODULE16 create_dummy_module( HMODULE module32 )
1754 {
1755     HMODULE16 hModule;
1756     NE_MODULE *pModule;
1757     SEGTABLEENTRY *pSegment;
1758     char *pStr,*s;
1759     unsigned int len;
1760     const char* basename;
1761     OFSTRUCT *ofs;
1762     int of_size, size;
1763     char filename[MAX_PATH];
1764     IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
1765
1766     if (!nt) return (HMODULE16)11;  /* invalid exe */
1767
1768     /* Extract base filename */
1769     GetModuleFileNameA( module32, filename, sizeof(filename) );
1770     basename = strrchr(filename, '\\');
1771     if (!basename) basename = filename;
1772     else basename++;
1773     len = strlen(basename);
1774     if ((s = strchr(basename, '.'))) len = s - basename;
1775
1776     /* Allocate module */
1777     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
1778                     + strlen(filename) + 1;
1779     size = sizeof(NE_MODULE) +
1780                  /* loaded file info */
1781                  ((of_size + 3) & ~3) +
1782                  /* segment table: DS,CS */
1783                  2 * sizeof(SEGTABLEENTRY) +
1784                  /* name table */
1785                  len + 2 +
1786                  /* several empty tables */
1787                  8;
1788
1789     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
1790     if (!hModule) return (HMODULE16)11;  /* invalid exe */
1791
1792     FarSetOwner16( hModule, hModule );
1793     pModule = (NE_MODULE *)GlobalLock16( hModule );
1794
1795     /* Set all used entries */
1796     pModule->magic            = IMAGE_OS2_SIGNATURE;
1797     pModule->count            = 1;
1798     pModule->next             = 0;
1799     pModule->flags            = NE_FFLAGS_WIN32;
1800     pModule->dgroup           = 0;
1801     pModule->ss               = 1;
1802     pModule->cs               = 2;
1803     pModule->heap_size        = 0;
1804     pModule->stack_size       = 0;
1805     pModule->seg_count        = 2;
1806     pModule->modref_count     = 0;
1807     pModule->nrname_size      = 0;
1808     pModule->fileinfo         = sizeof(NE_MODULE);
1809     pModule->os_flags         = NE_OSFLAGS_WINDOWS;
1810     pModule->self             = hModule;
1811     pModule->module32         = module32;
1812
1813     /* Set version and flags */
1814     pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
1815                                 (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
1816     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
1817         pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
1818
1819     /* Set loaded file information */
1820     ofs = (OFSTRUCT *)(pModule + 1);
1821     memset( ofs, 0, of_size );
1822     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
1823     strcpy( ofs->szPathName, filename );
1824
1825     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
1826     pModule->seg_table = (int)pSegment - (int)pModule;
1827     /* Data segment */
1828     pSegment->size    = 0;
1829     pSegment->flags   = NE_SEGFLAGS_DATA;
1830     pSegment->minsize = 0x1000;
1831     pSegment++;
1832     /* Code segment */
1833     pSegment->flags   = 0;
1834     pSegment++;
1835
1836     /* Module name */
1837     pStr = (char *)pSegment;
1838     pModule->name_table = (int)pStr - (int)pModule;
1839     assert(len<256);
1840     *pStr = len;
1841     lstrcpynA( pStr+1, basename, len+1 );
1842     pStr += len+2;
1843
1844     /* All tables zero terminated */
1845     pModule->res_table = pModule->import_table = pModule->entry_table = (int)pStr - (int)pModule;
1846
1847     NE_RegisterModule( pModule );
1848     LoadLibraryA( filename );  /* increment the ref count of the 32-bit module */
1849     return hModule;
1850 }
1851
1852 /***********************************************************************
1853  *           PrivateLoadLibrary       (KERNEL32.@)
1854  *
1855  * FIXME: rough guesswork, don't know what "Private" means
1856  */
1857 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
1858 {
1859     return LoadLibrary16(libname);
1860 }
1861
1862 /***********************************************************************
1863  *           PrivateFreeLibrary       (KERNEL32.@)
1864  *
1865  * FIXME: rough guesswork, don't know what "Private" means
1866  */
1867 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
1868 {
1869     FreeLibrary16(handle);
1870 }
1871
1872 /***************************************************************************
1873  *              MapHModuleLS                    (KERNEL32.@)
1874  */
1875 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod)
1876 {
1877     HMODULE16 ret;
1878     NE_MODULE *pModule;
1879
1880     if (!hmod)
1881         return TASK_GetCurrent()->hInstance;
1882     if (!HIWORD(hmod))
1883         return LOWORD(hmod); /* we already have a 16 bit module handle */
1884     pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1885     while (pModule)  {
1886         if (pModule->module32 == hmod)
1887             return pModule->self;
1888         pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1889     }
1890     if ((ret = create_dummy_module( hmod )) < 32)
1891     {
1892         SetLastError(ret);
1893         ret = 0;
1894     }
1895     return ret;
1896 }
1897
1898 /***************************************************************************
1899  *              MapHModuleSL                    (KERNEL32.@)
1900  */
1901 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod)
1902 {
1903     NE_MODULE *pModule;
1904
1905     if (!hmod) {
1906         TDB *pTask = TASK_GetCurrent();
1907         hmod = pTask->hModule;
1908     }
1909     pModule = (NE_MODULE*)GlobalLock16(hmod);
1910     if ((pModule->magic!=IMAGE_OS2_SIGNATURE) || !(pModule->flags & NE_FFLAGS_WIN32))
1911         return 0;
1912     return pModule->module32;
1913 }
1914
1915 /***************************************************************************
1916  *              MapHInstLS                      (KERNEL32.@)
1917  *              MapHInstLS                      (KERNEL.472)
1918  */
1919 void WINAPI MapHInstLS( CONTEXT86 *context )
1920 {
1921     context->Eax = MapHModuleLS( (HMODULE)context->Eax );
1922 }
1923
1924 /***************************************************************************
1925  *              MapHInstSL                      (KERNEL32.@)
1926  *              MapHInstSL                      (KERNEL.473)
1927  */
1928 void WINAPI MapHInstSL( CONTEXT86 *context )
1929 {
1930     context->Eax = (DWORD)MapHModuleSL( context->Eax );
1931 }
1932
1933 /***************************************************************************
1934  *              MapHInstLS_PN                   (KERNEL32.@)
1935  */
1936 void WINAPI MapHInstLS_PN( CONTEXT86 *context )
1937 {
1938     if (context->Eax) context->Eax = MapHModuleLS( (HMODULE)context->Eax );
1939 }
1940
1941 /***************************************************************************
1942  *              MapHInstSL_PN                   (KERNEL32.@)
1943  */
1944 void WINAPI MapHInstSL_PN( CONTEXT86 *context )
1945 {
1946     if (context->Eax) context->Eax = (DWORD)MapHModuleSL( context->Eax );
1947 }