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 <stdarg.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33 #include <ctype.h>
  34
  35 #include "windef.h"
  36 #include "wine/winbase16.h"
  37 #include "wownt32.h"
  38 #include "toolhelp.h"
  39 #include "excpt.h"
  40 #include "kernel_private.h"
  41 #include "kernel16_private.h"
  42 #include "wine/exception.h"
  43 #include "wine/debug.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(module);
  46 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  47
  48 #include "pshpack1.h"
  49 typedef struct _GPHANDLERDEF
  50 {
  51     WORD selector;
  52     WORD rangeStart;
  53     WORD rangeEnd;
  54     WORD handler;
  55 } GPHANDLERDEF;
  56 #include "poppack.h"
  57
  58 /*
  59  * Segment table entry
  60  */
  61 struct ne_segment_table_entry_s
  62 {
  63     WORD seg_data_offset;   /* Sector offset of segment data    */
  64     WORD seg_data_length;   /* Length of segment data           */
  65     WORD seg_flags;         /* Flags associated with this segment       */
  66     WORD min_alloc;         /* Minimum allocation size for this */
  67 };
  68
  69 #define hFirstModule (pThhook->hExeHead)
  70
  71 struct builtin_dll
  72 {
  73     const IMAGE_DOS_HEADER *header;      /* module headers */
  74     const char             *file_name;   /* module file name */
  75 };
  76
  77 /* Table of all built-in DLLs */
  78
  79 #define MAX_DLLS 50
  80
  81 static struct builtin_dll builtin_dlls[MAX_DLLS];
  82
  83 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  84 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  85
  86 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
  87
  88 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
  89
  90
  91 static WINE_EXCEPTION_FILTER(page_fault)
  92 {
  93     if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
  94         GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
  95         return EXCEPTION_EXECUTE_HANDLER;
  96     return EXCEPTION_CONTINUE_SEARCH;
  97 }
  98
  99
 100 /* patch all the flat cs references of the code segment if necessary */
 101 inline static void patch_code_segment( NE_MODULE *pModule )
 102 {
 103 #ifdef __i386__
 104     int i;
 105     SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule );
 106
 107     for (i = 0; i < pModule->ne_cseg; i++, pSeg++)
 108     {
 109         if (!(pSeg->flags & NE_SEGFLAGS_DATA))  /* found the code segment */
 110         {
 111             CALLFROM16 *call = GlobalLock16( pSeg->hSeg );
 112             if (call->flatcs == wine_get_cs()) return;  /* nothing to patch */
 113             while (call->pushl == 0x68)
 114             {
 115                 call->flatcs = wine_get_cs();
 116                 call++;
 117             }
 118         }
 119     }
 120 #endif
 121 }
 122
 123
 124 /***********************************************************************
 125  *              NE_strcasecmp
 126  *
 127  * locale-independent case conversion for module lookups
 128  */
 129 static int NE_strcasecmp( const char *str1, const char *str2 )
 130 {
 131     int ret = 0;
 132     for ( ; ; str1++, str2++)
 133         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 134     return ret;
 135 }
 136
 137
 138 /***********************************************************************
 139  *              NE_strncasecmp
 140  *
 141  * locale-independent case conversion for module lookups
 142  */
 143 static int NE_strncasecmp( const char *str1, const char *str2, int len )
 144 {
 145     int ret = 0;
 146     for ( ; len > 0; len--, str1++, str2++)
 147         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 148     return ret;
 149 }
 150
 151
 152 /***********************************************************************
 153  *           find_dll_descr
 154  *
 155  * Find a descriptor in the list
 156  */
 157 static const IMAGE_DOS_HEADER *find_dll_descr( const char *dllname, const char **file_name )
 158 {
 159     int i;
 160     const IMAGE_DOS_HEADER *mz_header;
 161     const IMAGE_OS2_HEADER *ne_header;
 162     BYTE *name_table;
 163
 164     for (i = 0; i < MAX_DLLS; i++)
 165     {
 166         mz_header = builtin_dlls[i].header;
 167         if (mz_header)
 168         {
 169             ne_header = (const IMAGE_OS2_HEADER *)((const char *)mz_header + mz_header->e_lfanew);
 170             name_table = (BYTE *)ne_header + ne_header->ne_restab;
 171
 172             /* check the dll file name */
 173             if (!NE_strcasecmp( builtin_dlls[i].file_name, dllname ) ||
 174             /* check the dll module name (without extension) */
 175                 (!NE_strncasecmp( dllname, name_table+1, *name_table ) &&
 176                  !strcmp( dllname + *name_table, ".dll" )))
 177             {
 178                 *file_name = builtin_dlls[i].file_name;
 179                 return builtin_dlls[i].header;
 180             }
 181         }
 182     }
 183     return NULL;
 184 }
 185
 186
 187 /***********************************************************************
 188  *           __wine_dll_register_16 (KERNEL32.@)
 189  *
 190  * Register a built-in DLL descriptor.
 191  */
 192 void __wine_dll_register_16( const IMAGE_DOS_HEADER *header, const char *file_name )
 193 {
 194     int i;
 195
 196     for (i = 0; i < MAX_DLLS; i++)
 197     {
 198         if (builtin_dlls[i].header) continue;
 199         builtin_dlls[i].header = header;
 200         builtin_dlls[i].file_name = file_name;
 201         break;
 202     }
 203     assert( i < MAX_DLLS );
 204 }
 205
 206
 207 /***********************************************************************
 208  *           __wine_dll_unregister_16 (KERNEL32.@)
 209  *
 210  * Unregister a built-in DLL descriptor.
 211  */
 212 void __wine_dll_unregister_16( const IMAGE_DOS_HEADER *header )
 213 {
 214     int i;
 215
 216     for (i = 0; i < MAX_DLLS; i++)
 217     {
 218         if (builtin_dlls[i].header != header) continue;
 219         builtin_dlls[i].header = NULL;
 220         break;
 221     }
 222 }
 223
 224
 225 /***********************************************************************
 226  *           NE_GetPtr
 227  */
 228 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
 229 {
 230     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
 231 }
 232
 233
 234 /**********************************************************************
 235  *           NE_RegisterModule
 236  */
 237 static void NE_RegisterModule( NE_MODULE *pModule )
 238 {
 239     pModule->next = hFirstModule;
 240     hFirstModule = pModule->self;
 241 }
 242
 243
 244 /***********************************************************************
 245  *           NE_DumpModule
 246  */
 247 void NE_DumpModule( HMODULE16 hModule )
 248 {
 249     int i, ordinal;
 250     SEGTABLEENTRY *pSeg;
 251     BYTE *pstr;
 252     WORD *pword;
 253     NE_MODULE *pModule;
 254     ET_BUNDLE *bundle;
 255     ET_ENTRY *entry;
 256
 257     if (!(pModule = NE_GetPtr( hModule )))
 258     {
 259         MESSAGE( "**** %04x is not a module handle\n", hModule );
 260         return;
 261     }
 262
 263       /* Dump the module info */
 264     DPRINTF( "---\n" );
 265     DPRINTF( "Module %04x:\n", hModule );
 266     DPRINTF( "count=%d flags=%04x heap=%d stack=%d\n",
 267              pModule->count, pModule->ne_flags,
 268              pModule->ne_heap, pModule->ne_stack );
 269     DPRINTF( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
 270              SELECTOROF(pModule->ne_csip), OFFSETOF(pModule->ne_csip),
 271              SELECTOROF(pModule->ne_sssp), OFFSETOF(pModule->ne_sssp),
 272              pModule->ne_autodata, pModule->ne_cseg, pModule->ne_cmod );
 273     DPRINTF( "os_flags=%d swap_area=%d version=%04x\n",
 274              pModule->ne_exetyp, pModule->ne_swaparea, pModule->ne_expver );
 275     if (pModule->ne_flags & NE_FFLAGS_WIN32)
 276         DPRINTF( "PE module=%p\n", pModule->module32 );
 277
 278       /* Dump the file info */
 279     DPRINTF( "---\n" );
 280     DPRINTF( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
 281
 282       /* Dump the segment table */
 283     DPRINTF( "---\n" );
 284     DPRINTF( "Segment table:\n" );
 285     pSeg = NE_SEG_TABLE( pModule );
 286     for (i = 0; i < pModule->ne_cseg; i++, pSeg++)
 287         DPRINTF( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 288                  i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 289                  pSeg->minsize, pSeg->hSeg );
 290
 291       /* Dump the resource table */
 292     DPRINTF( "---\n" );
 293     DPRINTF( "Resource table:\n" );
 294     if (pModule->ne_rsrctab)
 295     {
 296         pword = (WORD *)((BYTE *)pModule + pModule->ne_rsrctab);
 297         DPRINTF( "Alignment: %d\n", *pword++ );
 298         while (*pword)
 299         {
 300             NE_TYPEINFO *ptr = (NE_TYPEINFO *)pword;
 301             NE_NAMEINFO *pname = (NE_NAMEINFO *)(ptr + 1);
 302             DPRINTF( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 303             for (i = 0; i < ptr->count; i++, pname++)
 304                 DPRINTF( "offset=%d len=%d id=%04x\n",
 305                       pname->offset, pname->length, pname->id );
 306             pword = (WORD *)pname;
 307         }
 308     }
 309     else DPRINTF( "None\n" );
 310
 311       /* Dump the resident name table */
 312     DPRINTF( "---\n" );
 313     DPRINTF( "Resident-name table:\n" );
 314     pstr = (char *)pModule + pModule->ne_restab;
 315     while (*pstr)
 316     {
 317         DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 318                  *(WORD *)(pstr + *pstr + 1) );
 319         pstr += *pstr + 1 + sizeof(WORD);
 320     }
 321
 322       /* Dump the module reference table */
 323     DPRINTF( "---\n" );
 324     DPRINTF( "Module ref table:\n" );
 325     if (pModule->ne_modtab)
 326     {
 327         pword = (WORD *)((BYTE *)pModule + pModule->ne_modtab);
 328         for (i = 0; i < pModule->ne_cmod; i++, pword++)
 329         {
 330             char name[10];
 331             GetModuleName16( *pword, name, sizeof(name) );
 332             DPRINTF( "%d: %04x -> '%s'\n", i, *pword, name );
 333         }
 334     }
 335     else DPRINTF( "None\n" );
 336
 337       /* Dump the entry table */
 338     DPRINTF( "---\n" );
 339     DPRINTF( "Entry table:\n" );
 340     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->ne_enttab);
 341     do {
 342         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 343         DPRINTF( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 344         ordinal = bundle->first;
 345         while (ordinal < bundle->last)
 346         {
 347             if (entry->type == 0xff)
 348                 DPRINTF("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 349             else
 350                 DPRINTF("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 351             entry++;
 352         }
 353     } while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 354
 355     /* Dump the non-resident names table */
 356     DPRINTF( "---\n" );
 357     DPRINTF( "Non-resident names table:\n" );
 358     if (pModule->nrname_handle)
 359     {
 360         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 361         while (*pstr)
 362         {
 363             DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 364                    *(WORD *)(pstr + *pstr + 1) );
 365             pstr += *pstr + 1 + sizeof(WORD);
 366         }
 367     }
 368     DPRINTF( "\n" );
 369 }
 370
 371
 372 /***********************************************************************
 373  *           NE_WalkModules
 374  *
 375  * Walk the module list and print the modules.
 376  */
 377 void NE_WalkModules(void)
 378 {
 379     HMODULE16 hModule = hFirstModule;
 380     MESSAGE( "Module Flags Name\n" );
 381     while (hModule)
 382     {
 383         NE_MODULE *pModule = NE_GetPtr( hModule );
 384         if (!pModule)
 385         {
 386             MESSAGE( "Bad module %04x in list\n", hModule );
 387             return;
 388         }
 389         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->ne_flags,
 390                  *((char *)pModule + pModule->ne_restab),
 391                  (char *)pModule + pModule->ne_restab + 1 );
 392         hModule = pModule->next;
 393     }
 394 }
 395
 396
 397 /***********************************************************************
 398  *           NE_InitResourceHandler
 399  *
 400  * Fill in 'resloader' fields in the resource table.
 401  */
 402 static void NE_InitResourceHandler( HMODULE16 hModule )
 403 {
 404     static FARPROC16 proc;
 405
 406     NE_TYPEINFO *pTypeInfo;
 407     NE_MODULE *pModule;
 408
 409     if (!(pModule = NE_GetPtr( hModule )) || !pModule->ne_rsrctab) return;
 410
 411     TRACE("InitResourceHandler[%04x]\n", hModule );
 412
 413     if (!proc) proc = GetProcAddress16( GetModuleHandle16("KERNEL"), "DefResourceHandler" );
 414
 415     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->ne_rsrctab + 2);
 416     while(pTypeInfo->type_id)
 417     {
 418         memcpy_unaligned( &pTypeInfo->resloader, &proc, sizeof(FARPROC16) );
 419         pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo + 1) + pTypeInfo->count * sizeof(NE_NAMEINFO));
 420     }
 421 }
 422
 423
 424 /***********************************************************************
 425  *           NE_GetOrdinal
 426  *
 427  * Lookup the ordinal for a given name.
 428  */
 429 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 430 {
 431     unsigned char buffer[256], *cpnt;
 432     BYTE len;
 433     NE_MODULE *pModule;
 434
 435     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 436     if (pModule->ne_flags & NE_FFLAGS_WIN32) return 0;
 437
 438     TRACE("(%04x,'%s')\n", hModule, name );
 439
 440       /* First handle names of the form '#xxxx' */
 441
 442     if (name[0] == '#') return atoi( name + 1 );
 443
 444       /* Now copy and uppercase the string */
 445
 446     strcpy( buffer, name );
 447     for (cpnt = buffer; *cpnt; cpnt++) *cpnt = RtlUpperChar(*cpnt);
 448     len = cpnt - buffer;
 449
 450       /* First search the resident names */
 451
 452     cpnt = (char *)pModule + pModule->ne_restab;
 453
 454       /* Skip the first entry (module name) */
 455     cpnt += *cpnt + 1 + sizeof(WORD);
 456     while (*cpnt)
 457     {
 458         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 459         {
 460             WORD ordinal;
 461             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 462             TRACE("  Found: ordinal=%d\n", ordinal );
 463             return ordinal;
 464         }
 465         cpnt += *cpnt + 1 + sizeof(WORD);
 466     }
 467
 468       /* Now search the non-resident names table */
 469
 470     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 471     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 472
 473       /* Skip the first entry (module description string) */
 474     cpnt += *cpnt + 1 + sizeof(WORD);
 475     while (*cpnt)
 476     {
 477         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 478         {
 479             WORD ordinal;
 480             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 481             TRACE("  Found: ordinal=%d\n", ordinal );
 482             return ordinal;
 483         }
 484         cpnt += *cpnt + 1 + sizeof(WORD);
 485     }
 486     return 0;
 487 }
 488
 489
 490 /***********************************************************************
 491  *              NE_GetEntryPoint
 492  */
 493 FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 494 {
 495     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 496 }
 497
 498 /***********************************************************************
 499  *              NE_GetEntryPointEx
 500  */
 501 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 502 {
 503     NE_MODULE *pModule;
 504     WORD sel, offset, i;
 505
 506     ET_ENTRY *entry;
 507     ET_BUNDLE *bundle;
 508
 509     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 510     assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
 511
 512     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->ne_enttab);
 513     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 514     {
 515         if (!(bundle->next))
 516             return 0;
 517         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 518     }
 519
 520     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 521     for (i=0; i < (ordinal - bundle->first - 1); i++)
 522         entry++;
 523
 524     sel = entry->segnum;
 525     memcpy( &offset, &entry->offs, sizeof(WORD) );
 526
 527     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 528     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 529     if (sel==0xffff)
 530         return (FARPROC16)MAKESEGPTR( sel, offset );
 531     if (!snoop)
 532         return (FARPROC16)MAKESEGPTR( sel, offset );
 533     else
 534         return (FARPROC16)SNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)MAKESEGPTR( sel, offset ));
 535 }
 536
 537
 538 /***********************************************************************
 539  *              EntryAddrProc (KERNEL.667) Wine-specific export
 540  *
 541  * Return the entry point for a given ordinal.
 542  */
 543 FARPROC16 WINAPI EntryAddrProc16( HMODULE16 hModule, WORD ordinal )
 544 {
 545     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 546     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 547     return ret;
 548 }
 549
 550 /***********************************************************************
 551  *           NE_SetEntryPoint
 552  *
 553  * Change the value of an entry point. Use with caution!
 554  * It can only change the offset value, not the selector.
 555  */
 556 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 557 {
 558     NE_MODULE *pModule;
 559     ET_ENTRY *entry;
 560     ET_BUNDLE *bundle;
 561     int i;
 562
 563     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 564     assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
 565
 566     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->ne_enttab);
 567     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 568     {
 569         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 570         if (!(bundle->next)) return 0;
 571     }
 572
 573     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 574     for (i=0; i < (ordinal - bundle->first - 1); i++)
 575         entry++;
 576
 577     memcpy( &entry->offs, &offset, sizeof(WORD) );
 578     return TRUE;
 579 }
 580
 581
 582 /***********************************************************************
 583  *           build_bundle_data
 584  *
 585  * Build the entry table bundle data from the on-disk format. Helper for build_module.
 586  */
 587 static void *build_bundle_data( NE_MODULE *pModule, void *dest, const BYTE *table )
 588 {
 589     ET_BUNDLE *oldbundle, *bundle = dest;
 590     ET_ENTRY *entry;
 591     BYTE nr_entries, type;
 592
 593     memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 594     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 595
 596     while ((nr_entries = *table++))
 597     {
 598         if ((type = *table++))
 599         {
 600             bundle->last += nr_entries;
 601             if (type == 0xff)
 602             {
 603                 while (nr_entries--)
 604                 {
 605                     entry->type   = type;
 606                     entry->flags  = *table++;
 607                     table += sizeof(WORD);
 608                     entry->segnum = *table++;
 609                     entry->offs   = *(WORD *)table;
 610                     table += sizeof(WORD);
 611                     entry++;
 612                 }
 613             }
 614             else
 615             {
 616                 while (nr_entries--)
 617                 {
 618                     entry->type   = type;
 619                     entry->flags  = *table++;
 620                     entry->segnum = type;
 621                     entry->offs   = *(WORD *)table;
 622                     table += sizeof(WORD);
 623                     entry++;
 624                 }
 625             }
 626         }
 627         else
 628         {
 629             if (bundle->first == bundle->last)
 630             {
 631                 bundle->first += nr_entries;
 632                 bundle->last += nr_entries;
 633             }
 634             else
 635             {
 636                 oldbundle = bundle;
 637                 oldbundle->next = (char *)entry - (char *)pModule;
 638                 bundle = (ET_BUNDLE *)entry;
 639                 bundle->first = bundle->last = oldbundle->last + nr_entries;
 640                 bundle->next = 0;
 641                 entry = (ET_ENTRY*)(((BYTE*)entry)+sizeof(ET_BUNDLE));
 642             }
 643         }
 644     }
 645     return entry;
 646 }
 647
 648
 649 /***********************************************************************
 650  *           build_module
 651  *
 652  * Build the in-memory module from the on-disk data.
 653  */
 654 static HMODULE16 build_module( const void *mapping, SIZE_T mapping_size, LPCSTR path )
 655 {
 656     const IMAGE_DOS_HEADER *mz_header = mapping;
 657     const IMAGE_OS2_HEADER *ne_header;
 658     const struct ne_segment_table_entry_s *pSeg;
 659     const void *ptr;
 660     int i;
 661     size_t size;
 662     HMODULE16 hModule;
 663     NE_MODULE *pModule;
 664     BYTE *buffer, *pData, *end;
 665     OFSTRUCT *ofs;
 666
 667     if (mapping_size < sizeof(*mz_header)) return ERROR_BAD_FORMAT;
 668     if (mz_header->e_magic != IMAGE_DOS_SIGNATURE) return ERROR_BAD_FORMAT;
 669     ne_header = (const IMAGE_OS2_HEADER *)((const char *)mapping + mz_header->e_lfanew);
 670     if (mz_header->e_lfanew + sizeof(*ne_header) > mapping_size) return ERROR_BAD_FORMAT;
 671     if (ne_header->ne_magic == IMAGE_NT_SIGNATURE) return 21;  /* win32 exe */
 672     if (ne_header->ne_magic == IMAGE_OS2_SIGNATURE_LX)
 673     {
 674         MESSAGE("Sorry, %s is an OS/2 linear executable (LX) file!\n", path);
 675         return 12;
 676     }
 677     if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE) return ERROR_BAD_FORMAT;
 678
 679     /* We now have a valid NE header */
 680
 681     /* check to be able to fall back to loading OS/2 programs as DOS
 682      * FIXME: should this check be reversed in order to be less strict?
 683      * (only fail for OS/2 ne_exetyp 0x01 here?) */
 684     if ((ne_header->ne_exetyp != 0x02 /* Windows */)
 685         && (ne_header->ne_exetyp != 0x04) /* Windows 386 */)
 686         return ERROR_BAD_FORMAT;
 687
 688     size = sizeof(NE_MODULE) +
 689              /* segment table */
 690            ne_header->ne_cseg * sizeof(SEGTABLEENTRY) +
 691              /* resource table */
 692            ne_header->ne_restab - ne_header->ne_rsrctab +
 693              /* resident names table */
 694            ne_header->ne_modtab - ne_header->ne_restab +
 695              /* module ref table */
 696            ne_header->ne_cmod * sizeof(WORD) +
 697              /* imported names table */
 698            ne_header->ne_enttab - ne_header->ne_imptab +
 699              /* entry table length */
 700            ne_header->ne_cbenttab +
 701              /* entry table extra conversion space */
 702            sizeof(ET_BUNDLE) +
 703            2 * (ne_header->ne_cbenttab - ne_header->ne_cmovent*6) +
 704              /* loaded file info */
 705            sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 706
 707     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 708     if (!hModule) return ERROR_BAD_FORMAT;
 709
 710     FarSetOwner16( hModule, hModule );
 711     pModule = (NE_MODULE *)GlobalLock16( hModule );
 712     memcpy( pModule, ne_header, sizeof(*ne_header) );
 713     pModule->count = 0;
 714     /* check programs for default minimal stack size */
 715     if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE) && (pModule->ne_stack < 0x1400))
 716         pModule->ne_stack = 0x1400;
 717
 718     pModule->self         = hModule;
 719     pModule->mapping      = mapping;
 720     pModule->mapping_size = mapping_size;
 721
 722     pData = (BYTE *)(pModule + 1);
 723
 724     /* Clear internal Wine flags in case they are set in the EXE file */
 725
 726     pModule->ne_flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 727
 728     /* Get the segment table */
 729
 730     pModule->ne_segtab = pData - (BYTE *)pModule;
 731     if (!(pSeg = NE_GET_DATA( pModule, mz_header->e_lfanew + ne_header->ne_segtab,
 732                               ne_header->ne_cseg * sizeof(struct ne_segment_table_entry_s) )))
 733         goto failed;
 734     for (i = ne_header->ne_cseg; i > 0; i--, pSeg++)
 735     {
 736         memcpy( pData, pSeg, sizeof(*pSeg) );
 737         pData += sizeof(SEGTABLEENTRY);
 738     }
 739
 740     /* Get the resource table */
 741
 742     if (ne_header->ne_rsrctab < ne_header->ne_restab)
 743     {
 744         pModule->ne_rsrctab = pData - (BYTE *)pModule;
 745         if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_rsrctab,
 746                            ne_header->ne_restab - ne_header->ne_rsrctab )) goto failed;
 747         pData += ne_header->ne_restab - ne_header->ne_rsrctab;
 748     }
 749     else pModule->ne_rsrctab = 0;  /* No resource table */
 750
 751     /* Get the resident names table */
 752
 753     pModule->ne_restab = pData - (BYTE *)pModule;
 754     if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_restab,
 755                        ne_header->ne_modtab - ne_header->ne_restab )) goto failed;
 756     pData += ne_header->ne_modtab - ne_header->ne_restab;
 757
 758     /* Get the module references table */
 759
 760     if (ne_header->ne_cmod > 0)
 761     {
 762         pModule->ne_modtab = pData - (BYTE *)pModule;
 763         if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_modtab,
 764                            ne_header->ne_cmod * sizeof(WORD) )) goto failed;
 765         pData += ne_header->ne_cmod * sizeof(WORD);
 766     }
 767     else pModule->ne_modtab = 0;  /* No module references */
 768
 769     /* Get the imported names table */
 770
 771     pModule->ne_imptab = pData - (BYTE *)pModule;
 772     if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_imptab,
 773                        ne_header->ne_enttab - ne_header->ne_imptab )) goto failed;
 774     pData += ne_header->ne_enttab - ne_header->ne_imptab;
 775
 776     /* Load entry table, convert it to the optimized version used by Windows */
 777
 778     pModule->ne_enttab = pData - (BYTE *)pModule;
 779     if (!(ptr = NE_GET_DATA( pModule, mz_header->e_lfanew + ne_header->ne_enttab,
 780                              ne_header->ne_cbenttab ))) goto failed;
 781     end = build_bundle_data( pModule, pData, ptr );
 782
 783     pData += ne_header->ne_cbenttab + sizeof(ET_BUNDLE) +
 784         2 * (ne_header->ne_cbenttab - ne_header->ne_cmovent*6);
 785
 786     if (end > pData)
 787     {
 788         FIXME( "not enough space for entry table for %s\n", debugstr_a(path) );
 789         goto failed;
 790     }
 791
 792     /* Store the filename information */
 793
 794     pModule->fileinfo = pData - (BYTE *)pModule;
 795     ofs = (OFSTRUCT *)pData;
 796     ofs->cBytes = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path);
 797     ofs->fFixedDisk = 1;
 798     strcpy( ofs->szPathName, path );
 799     pData += ofs->cBytes + 1;
 800     assert( (BYTE *)pModule + size <= pData );
 801
 802     /* Get the non-resident names table */
 803
 804     if (ne_header->ne_cbnrestab)
 805     {
 806         pModule->nrname_handle = GlobalAlloc16( 0, ne_header->ne_cbnrestab );
 807         if (!pModule->nrname_handle) goto failed;
 808         FarSetOwner16( pModule->nrname_handle, hModule );
 809         buffer = GlobalLock16( pModule->nrname_handle );
 810         if (!NE_READ_DATA( pModule, buffer, ne_header->ne_nrestab, ne_header->ne_cbnrestab ))
 811         {
 812             GlobalFree16( pModule->nrname_handle );
 813             goto failed;
 814         }
 815     }
 816     else pModule->nrname_handle = 0;
 817
 818     /* Allocate a segment for the implicitly-loaded DLLs */
 819
 820     if (pModule->ne_cmod)
 821     {
 822         pModule->dlls_to_init = GlobalAlloc16( GMEM_ZEROINIT,
 823                                                (pModule->ne_cmod+1)*sizeof(HMODULE16) );
 824         if (!pModule->dlls_to_init)
 825         {
 826             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 827             goto failed;
 828         }
 829         FarSetOwner16( pModule->dlls_to_init, hModule );
 830     }
 831     else pModule->dlls_to_init = 0;
 832
 833     NE_RegisterModule( pModule );
 834     return hModule;
 835
 836 failed:
 837     GlobalFree16( hModule );
 838     return ERROR_BAD_FORMAT;
 839 }
 840
 841
 842 /***********************************************************************
 843  *           NE_LoadDLLs
 844  *
 845  * Load all DLLs implicitly linked to a module.
 846  */
 847 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 848 {
 849     int i;
 850     WORD *pModRef = (WORD *)((char *)pModule + pModule->ne_modtab);
 851     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 852
 853     for (i = 0; i < pModule->ne_cmod; i++, pModRef++)
 854     {
 855         char buffer[260], *p;
 856         BYTE *pstr = (BYTE *)pModule + pModule->ne_imptab + *pModRef;
 857         memcpy( buffer, pstr + 1, *pstr );
 858         *(buffer + *pstr) = 0; /* terminate it */
 859
 860         TRACE("Loading '%s'\n", buffer );
 861         if (!(*pModRef = GetModuleHandle16( buffer )))
 862         {
 863             /* If the DLL is not loaded yet, load it and store */
 864             /* its handle in the list of DLLs to initialize.   */
 865             HMODULE16 hDLL;
 866
 867             /* Append .DLL to name if no extension present */
 868             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 869                     strcat( buffer, ".DLL" );
 870
 871             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 872             {
 873                 /* FIXME: cleanup what was done */
 874
 875                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 876                      buffer, *((BYTE*)pModule + pModule->ne_restab),
 877                      (char *)pModule + pModule->ne_restab + 1, hDLL );
 878                 return FALSE;
 879             }
 880             *pModRef = GetExePtr( hDLL );
 881             *pDLLs++ = *pModRef;
 882         }
 883         else  /* Increment the reference count of the DLL */
 884         {
 885             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 886             if (pOldDLL) pOldDLL->count++;
 887         }
 888     }
 889     return TRUE;
 890 }
 891
 892
 893 /**********************************************************************
 894  *          NE_DoLoadModule
 895  *
 896  * Load first instance of NE module from file.
 897  *
 898  * pModule must point to a module structure prepared by build_module.
 899  * This routine must never be called twice on a module.
 900  */
 901 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
 902 {
 903     /* Allocate the segments for this module */
 904
 905     if (!NE_CreateAllSegments( pModule ))
 906         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
 907
 908     /* Load the referenced DLLs */
 909
 910     if (!NE_LoadDLLs( pModule ))
 911         return ERROR_FILE_NOT_FOUND; /* 2 */
 912
 913     /* Load the segments */
 914
 915     NE_LoadAllSegments( pModule );
 916
 917     /* Make sure the usage count is 1 on the first loading of  */
 918     /* the module, even if it contains circular DLL references */
 919
 920     pModule->count = 1;
 921
 922     return NE_GetInstance( pModule );
 923 }
 924
 925 /**********************************************************************
 926  *          NE_LoadModule
 927  *
 928  * Load first instance of NE module. (Note: caller is responsible for
 929  * ensuring the module isn't already loaded!)
 930  *
 931  * If the module turns out to be an executable module, only a
 932  * handle to a module stub is returned; this needs to be initialized
 933  * by calling NE_DoLoadModule later, in the context of the newly
 934  * created process.
 935  *
 936  * If lib_only is TRUE, however, the module is perforce treated
 937  * like a DLL module, even if it is an executable module.
 938  *
 939  */
 940 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
 941 {
 942     NE_MODULE *pModule;
 943     HMODULE16 hModule;
 944     HINSTANCE16 hInstance;
 945     HFILE16 hFile;
 946     OFSTRUCT ofs;
 947     HANDLE mapping;
 948     void *ptr;
 949     MEMORY_BASIC_INFORMATION info;
 950
 951     /* Open file */
 952     if ((hFile = OpenFile16( name, &ofs, OF_READ|OF_SHARE_DENY_WRITE )) == HFILE_ERROR16)
 953         return ERROR_FILE_NOT_FOUND;
 954
 955     mapping = CreateFileMappingW( DosFileHandleToWin32Handle(hFile), NULL, PAGE_WRITECOPY, 0, 0, NULL );
 956     _lclose16( hFile );
 957     if (!mapping) return ERROR_BAD_FORMAT;
 958
 959     ptr = MapViewOfFile( mapping, FILE_MAP_COPY, 0, 0, 0 );
 960     CloseHandle( mapping );
 961     if (!ptr) return ERROR_BAD_FORMAT;
 962
 963     VirtualQuery( ptr, &info, sizeof(info) );
 964     hModule = build_module( ptr, info.RegionSize, ofs.szPathName );
 965
 966     if (hModule < 32)
 967     {
 968         UnmapViewOfFile( ptr );
 969         return hModule;
 970     }
 971
 972     SNOOP16_RegisterDLL( hModule, ofs.szPathName );
 973     NE_InitResourceHandler( hModule );
 974
 975     pModule = NE_GetPtr( hModule );
 976
 977     if ( !lib_only && !( pModule->ne_flags & NE_FFLAGS_LIBMODULE ) )
 978         return hModule;
 979
 980     hInstance = NE_DoLoadModule( pModule );
 981     if ( hInstance < 32 )
 982     {
 983         /* cleanup ... */
 984         NE_FreeModule( hModule, 0 );
 985     }
 986
 987     return hInstance;
 988 }
 989
 990
 991 /***********************************************************************
 992  *           NE_DoLoadBuiltinModule
 993  *
 994  * Load a built-in Win16 module. Helper function for NE_LoadBuiltinModule.
 995  */
 996 static HMODULE16 NE_DoLoadBuiltinModule( const IMAGE_DOS_HEADER *mz_header, const char *file_name,
 997                                          HMODULE owner32 )
 998 {
 999     NE_MODULE *pModule;
1000     HMODULE16 hModule;
1001     HINSTANCE16 hInstance;
1002     OSVERSIONINFOW versionInfo;
1003     const IMAGE_OS2_HEADER *ne_header;
1004     SIZE_T mapping_size = ~0UL;  /* assume builtins don't contain invalid offsets... */
1005
1006     ne_header = (const IMAGE_OS2_HEADER *)((const BYTE *)mz_header + mz_header->e_lfanew);
1007     hModule = build_module( mz_header, mapping_size, file_name );
1008     if (hModule < 32) return hModule;
1009     pModule = GlobalLock16( hModule );
1010     pModule->ne_flags |= NE_FFLAGS_BUILTIN;
1011     pModule->owner32 = owner32;
1012
1013     /* fake the expected version the module should have according to the current Windows version */
1014     versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1015     if (GetVersionExW( &versionInfo ))
1016         pModule->ne_expver = MAKEWORD( versionInfo.dwMinorVersion, versionInfo.dwMajorVersion );
1017
1018     hInstance = NE_DoLoadModule( pModule );
1019     if (hInstance < 32) NE_FreeModule( hModule, 0 );
1020
1021     NE_InitResourceHandler( hModule );
1022
1023     if (pModule->ne_heap)
1024     {
1025         SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + pModule->ne_autodata - 1;
1026         unsigned int size = pSeg->minsize + pModule->ne_heap;
1027         if (size > 0xfffe) size = 0xfffe;
1028         LocalInit16( GlobalHandleToSel16(pSeg->hSeg), pSeg->minsize, size );
1029     }
1030
1031     patch_code_segment( pModule );
1032
1033     return hInstance;
1034 }
1035
1036
1037 /**********************************************************************
1038  *          MODULE_LoadModule16
1039  *
1040  * Load a NE module in the order of the loadorder specification.
1041  * The caller is responsible that the module is not loaded already.
1042  *
1043  */
1044 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
1045 {
1046     HINSTANCE16 hinst = 2;
1047     HMODULE16 hModule;
1048     HMODULE mod32 = 0;
1049     NE_MODULE *pModule;
1050     const IMAGE_DOS_HEADER *descr = NULL;
1051     const char *file_name = NULL;
1052     char dllname[20], owner[20], *p;
1053     const char *basename;
1054     int owner_exists;
1055
1056     /* strip path information */
1057
1058     basename = libname;
1059     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
1060     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
1061     if ((p = strrchr( basename, '/' ))) basename = p + 1;
1062
1063     if (strlen(basename) < sizeof(dllname)-4)
1064     {
1065         strcpy( dllname, basename );
1066         p = strrchr( dllname, '.' );
1067         if (!p) strcat( dllname, ".dll" );
1068         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
1069
1070         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &owner_exists ) != -1)
1071         {
1072             mod32 = LoadLibraryA( owner );
1073             if (mod32)
1074             {
1075                 if (!(descr = find_dll_descr( dllname, &file_name )))
1076                 {
1077                     FreeLibrary( mod32 );
1078                     owner_exists = 0;
1079                 }
1080                 /* loading the 32-bit library can have the side effect of loading the module */
1081                 /* if so, simply incr the ref count and return the module */
1082                 if ((hModule = GetModuleHandle16( libname )))
1083                 {
1084                     TRACE( "module %s already loaded by owner\n", libname );
1085                     pModule = NE_GetPtr( hModule );
1086                     if (pModule) pModule->count++;
1087                     FreeLibrary( mod32 );
1088                     return hModule;
1089                 }
1090             }
1091             else
1092             {
1093                 /* it's probably disabled by the load order config */
1094                 WARN( "couldn't load owner %s for 16-bit dll %s\n", owner, dllname );
1095                 return ERROR_FILE_NOT_FOUND;
1096             }
1097         }
1098     }
1099
1100     if (descr)
1101     {
1102         TRACE("Trying built-in '%s'\n", libname);
1103         hinst = NE_DoLoadBuiltinModule( descr, file_name, mod32 );
1104         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : builtin\n", debugstr_a(file_name));
1105     }
1106     else
1107     {
1108         TRACE("Trying native dll '%s'\n", libname);
1109         hinst = NE_LoadModule(libname, lib_only);
1110         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : native\n", debugstr_a(libname));
1111         if (hinst == ERROR_FILE_NOT_FOUND && owner_exists) hinst = 21;  /* win32 module */
1112     }
1113
1114     if (hinst > 32 && !implicit)
1115     {
1116         hModule = GetModuleHandle16(libname);
1117         if(!hModule)
1118         {
1119             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle. Filename too long ?\n",
1120                 libname, hinst);
1121             return ERROR_INVALID_HANDLE;
1122         }
1123
1124         pModule = NE_GetPtr(hModule);
1125         if(!pModule)
1126         {
1127             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
1128                 libname, hinst);
1129             return ERROR_INVALID_HANDLE;
1130         }
1131
1132         TRACE("Loaded module '%s' at 0x%04x.\n", libname, hinst);
1133
1134         /*
1135          * Call initialization routines for all loaded DLLs. Note that
1136          * when we load implicitly linked DLLs this will be done by InitTask().
1137          */
1138         if(pModule->ne_flags & NE_FFLAGS_LIBMODULE)
1139         {
1140             NE_InitializeDLLs(hModule);
1141             NE_DllProcessAttach(hModule);
1142         }
1143     }
1144     return hinst;       /* The last error that occurred */
1145 }
1146
1147
1148 /**********************************************************************
1149  *          NE_CreateThread
1150  *
1151  * Create the thread for a 16-bit module.
1152  */
1153 static HINSTANCE16 NE_CreateThread( NE_MODULE *pModule, WORD cmdShow, LPCSTR cmdline )
1154 {
1155     HANDLE hThread;
1156     TDB *pTask;
1157     HTASK16 hTask;
1158     HINSTANCE16 instance = 0;
1159
1160     if (!(hTask = TASK_SpawnTask( pModule, cmdShow, cmdline + 1, *cmdline, &hThread )))
1161         return 0;
1162
1163     /* Post event to start the task */
1164     PostEvent16( hTask );
1165
1166     /* Wait until we get the instance handle */
1167     do
1168     {
1169         DirectedYield16( hTask );
1170         if (!IsTask16( hTask ))  /* thread has died */
1171         {
1172             DWORD exit_code;
1173             WaitForSingleObject( hThread, INFINITE );
1174             GetExitCodeThread( hThread, &exit_code );
1175             CloseHandle( hThread );
1176             return exit_code;
1177         }
1178         if (!(pTask = GlobalLock16( hTask ))) break;
1179         instance = pTask->hInstance;
1180         GlobalUnlock16( hTask );
1181     } while (!instance);
1182
1183     CloseHandle( hThread );
1184     return instance;
1185 }
1186
1187
1188 /**********************************************************************
1189  *          LoadModule      (KERNEL.45)
1190  */
1191 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
1192 {
1193     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
1194     LOADPARAMS16 *params;
1195     HMODULE16 hModule;
1196     NE_MODULE *pModule;
1197     LPSTR cmdline;
1198     WORD cmdShow;
1199
1200     /* Load module */
1201
1202     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1203     {
1204         /* Special case: second instance of an already loaded NE module */
1205
1206         if ( !( pModule = NE_GetPtr( hModule ) ) ) return ERROR_BAD_FORMAT;
1207         if ( pModule->module32 ) return (HINSTANCE16)21;
1208
1209         /* Increment refcount */
1210
1211         pModule->count++;
1212     }
1213     else
1214     {
1215         /* Main case: load first instance of NE module */
1216
1217         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1218             return hModule;
1219
1220         if ( !(pModule = NE_GetPtr( hModule )) )
1221             return ERROR_BAD_FORMAT;
1222     }
1223
1224     /* If library module, we just retrieve the instance handle */
1225
1226     if ( ( pModule->ne_flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1227         return NE_GetInstance( pModule );
1228
1229     /*
1230      *  At this point, we need to create a new process.
1231      *
1232      *  pModule points either to an already loaded module, whose refcount
1233      *  has already been incremented (to avoid having the module vanish
1234      *  in the meantime), or else to a stub module which contains only header
1235      *  information.
1236      */
1237     params = (LOADPARAMS16 *)paramBlock;
1238     cmdShow = ((WORD *)MapSL(params->showCmd))[1];
1239     cmdline = MapSL( params->cmdLine );
1240     return NE_CreateThread( pModule, cmdShow, cmdline );
1241 }
1242
1243
1244 /**********************************************************************
1245  *          NE_StartTask
1246  *
1247  * Startup code for a new 16-bit task.
1248  */
1249 DWORD NE_StartTask(void)
1250 {
1251     TDB *pTask = TASK_GetCurrent();
1252     NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
1253     HINSTANCE16 hInstance, hPrevInstance;
1254     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1255     WORD sp;
1256
1257     if ( pModule->count > 0 )
1258     {
1259         /* Second instance of an already loaded NE module */
1260         /* Note that the refcount was already incremented by the parent */
1261
1262         hPrevInstance = NE_GetInstance( pModule );
1263
1264         if ( pModule->ne_autodata )
1265             if ( NE_CreateSegment( pModule, pModule->ne_autodata ) )
1266                 NE_LoadSegment( pModule, pModule->ne_autodata );
1267
1268         hInstance = NE_GetInstance( pModule );
1269         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->ne_autodata, hPrevInstance);
1270
1271     }
1272     else
1273     {
1274         /* Load first instance of NE module */
1275
1276         pModule->ne_flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1277
1278         hInstance = NE_DoLoadModule( pModule );
1279         hPrevInstance = 0;
1280     }
1281
1282     if ( hInstance >= 32 )
1283     {
1284         CONTEXT86 context;
1285
1286         /* Enter instance handles into task struct */
1287
1288         pTask->hInstance = hInstance;
1289         pTask->hPrevInstance = hPrevInstance;
1290
1291         /* Use DGROUP for 16-bit stack */
1292
1293         if (!(sp = OFFSETOF(pModule->ne_sssp)))
1294             sp = pSegTable[SELECTOROF(pModule->ne_sssp)-1].minsize + pModule->ne_stack;
1295         sp &= ~1;
1296         sp -= sizeof(STACK16FRAME);
1297         NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( GlobalHandleToSel16(hInstance), sp );
1298
1299         /* Registers at initialization must be:
1300          * ax   zero
1301          * bx   stack size in bytes
1302          * cx   heap size in bytes
1303          * si   previous app instance
1304          * di   current app instance
1305          * bp   zero
1306          * es   selector to the PSP
1307          * ds   dgroup of the application
1308          * ss   stack selector
1309          * sp   top of the stack
1310          */
1311         memset( &context, 0, sizeof(context) );
1312         context.SegCs  = GlobalHandleToSel16(pSegTable[SELECTOROF(pModule->ne_csip) - 1].hSeg);
1313         context.SegDs  = GlobalHandleToSel16(pTask->hInstance);
1314         context.SegEs  = pTask->hPDB;
1315         context.SegFs  = wine_get_fs();
1316         context.SegGs  = wine_get_gs();
1317         context.Eip    = OFFSETOF(pModule->ne_csip);
1318         context.Ebx    = pModule->ne_stack;
1319         context.Ecx    = pModule->ne_heap;
1320         context.Edi    = pTask->hInstance;
1321         context.Esi    = pTask->hPrevInstance;
1322
1323         /* Now call 16-bit entry point */
1324
1325         TRACE("Starting main program: cs:ip=%04lx:%04lx ds=%04lx ss:sp=%04x:%04x\n",
1326               context.SegCs, context.Eip, context.SegDs,
1327               SELECTOROF(NtCurrentTeb()->WOW32Reserved),
1328               OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
1329
1330         WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
1331         ExitThread( LOWORD(context.Eax) );
1332     }
1333     return hInstance;  /* error code */
1334 }
1335
1336 /***********************************************************************
1337  *           LoadLibrary     (KERNEL.95)
1338  *           LoadLibrary16   (KERNEL32.35)
1339  */
1340 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1341 {
1342     return LoadModule16(libname, (LPVOID)-1 );
1343 }
1344
1345
1346 /**********************************************************************
1347  *          MODULE_CallWEP
1348  *
1349  * Call a DLL's WEP, allowing it to shut down.
1350  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1351  */
1352 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1353 {
1354     BOOL16 ret;
1355     FARPROC16 WEP = GetProcAddress16( hModule, "WEP" );
1356     if (!WEP) return FALSE;
1357
1358     __TRY
1359     {
1360         WORD args[1];
1361         DWORD dwRet;
1362
1363         args[0] = WEP_FREE_DLL;
1364         WOWCallback16Ex( (DWORD)WEP, WCB16_PASCAL, sizeof(args), args, &dwRet );
1365         ret = LOWORD(dwRet);
1366     }
1367     __EXCEPT(page_fault)
1368     {
1369         WARN("Page fault\n");
1370         ret = 0;
1371     }
1372     __ENDTRY
1373
1374     return ret;
1375 }
1376
1377
1378 /**********************************************************************
1379  *          NE_FreeModule
1380  *
1381  * Implementation of FreeModule16().
1382  */
1383 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1384 {
1385     HMODULE16 *hPrevModule;
1386     NE_MODULE *pModule;
1387     HMODULE16 *pModRef;
1388     int i;
1389
1390     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1391     hModule = pModule->self;
1392
1393     TRACE("%04x count %d\n", hModule, pModule->count );
1394
1395     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1396     else pModule->count = 0;
1397
1398     if (call_wep && !(pModule->ne_flags & NE_FFLAGS_WIN32))
1399     {
1400         /* Free the objects owned by the DLL module */
1401         NE_CallUserSignalProc( hModule, USIG16_DLL_UNLOAD );
1402
1403         if (pModule->ne_flags & NE_FFLAGS_LIBMODULE)
1404             MODULE_CallWEP( hModule );
1405         else
1406             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1407     }
1408
1409     TRACE_(loaddll)("Unloaded module %s : %s\n", debugstr_a(NE_MODULE_NAME(pModule)),
1410                     (pModule->ne_flags & NE_FFLAGS_BUILTIN) ? "builtin" : "native");
1411
1412     /* Clear magic number just in case */
1413
1414     pModule->ne_magic = pModule->self = 0;
1415     if (pModule->owner32) FreeLibrary( pModule->owner32 );
1416     else if (pModule->mapping) UnmapViewOfFile( (void *)pModule->mapping );
1417
1418       /* Remove it from the linked list */
1419
1420     hPrevModule = &hFirstModule;
1421     while (*hPrevModule && (*hPrevModule != hModule))
1422     {
1423         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1424     }
1425     if (*hPrevModule) *hPrevModule = pModule->next;
1426
1427     /* Free the referenced modules */
1428
1429     pModRef = (HMODULE16*)((char *)pModule + pModule->ne_modtab);
1430     for (i = 0; i < pModule->ne_cmod; i++, pModRef++)
1431     {
1432         NE_FreeModule( *pModRef, call_wep );
1433     }
1434
1435     /* Free the module storage */
1436
1437     GlobalFreeAll16( hModule );
1438     return TRUE;
1439 }
1440
1441
1442 /**********************************************************************
1443  *          FreeModule    (KERNEL.46)
1444  */
1445 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1446 {
1447     return NE_FreeModule( hModule, TRUE );
1448 }
1449
1450
1451 /***********************************************************************
1452  *           FreeLibrary     (KERNEL.96)
1453  *           FreeLibrary16   (KERNEL32.36)
1454  */
1455 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1456 {
1457     TRACE("%04x\n", handle );
1458     FreeModule16( handle );
1459 }
1460
1461
1462 /***********************************************************************
1463  *          GetModuleHandle16 (KERNEL32.@)
1464  */
1465 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1466 {
1467     HMODULE16   hModule = hFirstModule;
1468     LPSTR       s;
1469     BYTE        len, *name_table;
1470     char        tmpstr[MAX_PATH];
1471     NE_MODULE *pModule;
1472
1473     TRACE("(%s)\n", name);
1474
1475     if (!HIWORD(name)) return GetExePtr(LOWORD(name));
1476
1477     len = strlen(name);
1478     if (!len) return 0;
1479
1480     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1481
1482     /* If 'name' matches exactly the module name of a module:
1483      * Return its handle.
1484      */
1485     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1486     {
1487         pModule = NE_GetPtr( hModule );
1488         if (!pModule) break;
1489         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1490
1491         name_table = (BYTE *)pModule + pModule->ne_restab;
1492         if ((*name_table == len) && !strncmp(name, name_table+1, len))
1493             return hModule;
1494     }
1495
1496     /* If uppercased 'name' matches exactly the module name of a module:
1497      * Return its handle
1498      */
1499     for (s = tmpstr; *s; s++) *s = RtlUpperChar(*s);
1500
1501     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1502     {
1503         pModule = NE_GetPtr( hModule );
1504         if (!pModule) break;
1505         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1506
1507         name_table = (BYTE *)pModule + pModule->ne_restab;
1508         /* FIXME: the strncasecmp is WRONG. It should not be case insensitive,
1509          * but case sensitive! (Unfortunately Winword 6 and subdlls have
1510          * lowercased module names, but try to load uppercase DLLs, so this
1511          * 'i' compare is just a quickfix until the loader handles that
1512          * correctly. -MM 990705
1513          */
1514         if ((*name_table == len) && !NE_strncasecmp(tmpstr, name_table+1, len))
1515             return hModule;
1516     }
1517
1518     /* If the base filename of 'name' matches the base filename of the module
1519      * filename of some module (case-insensitive compare):
1520      * Return its handle.
1521      */
1522
1523     /* basename: search backwards in passed name to \ / or : */
1524     s = tmpstr + strlen(tmpstr);
1525     while (s > tmpstr)
1526     {
1527         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1528                 break;
1529         s--;
1530     }
1531
1532     /* search this in loaded filename list */
1533     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1534     {
1535         char            *loadedfn;
1536         OFSTRUCT        *ofs;
1537
1538         pModule = NE_GetPtr( hModule );
1539         if (!pModule) break;
1540         if (!pModule->fileinfo) continue;
1541         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1542
1543         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1544         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1545         /* basename: search backwards in pathname to \ / or : */
1546         while (loadedfn > (char*)ofs->szPathName)
1547         {
1548             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1549                     break;
1550             loadedfn--;
1551         }
1552         /* case insensitive compare ... */
1553         if (!NE_strcasecmp(loadedfn, s))
1554             return hModule;
1555     }
1556     return 0;
1557 }
1558
1559
1560 /**********************************************************************
1561  *          GetModuleName    (KERNEL.27)
1562  */
1563 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1564 {
1565     NE_MODULE *pModule;
1566     BYTE *p;
1567
1568     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1569     p = (BYTE *)pModule + pModule->ne_restab;
1570     if (count > *p) count = *p + 1;
1571     if (count > 0)
1572     {
1573         memcpy( buf, p + 1, count - 1 );
1574         buf[count-1] = '\0';
1575     }
1576     return TRUE;
1577 }
1578
1579
1580 /**********************************************************************
1581  *          GetModuleFileName      (KERNEL.49)
1582  *
1583  * Comment: see GetModuleFileNameA
1584  *
1585  * Even if invoked by second instance of a program,
1586  * it still returns path of first one.
1587  */
1588 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1589                                   INT16 nSize )
1590 {
1591     NE_MODULE *pModule;
1592
1593     /* Win95 does not query hModule if set to 0 !
1594      * Is this wrong or maybe Win3.1 only ? */
1595     if (!hModule) hModule = GetCurrentTask();
1596
1597     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1598     lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1599     if (pModule->ne_expver >= 0x400)
1600         GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, nSize);
1601     TRACE("%04x -> '%s'\n", hModule, lpFileName );
1602     return strlen(lpFileName);
1603 }
1604
1605
1606 /**********************************************************************
1607  *          GetModuleUsage    (KERNEL.48)
1608  */
1609 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1610 {
1611     NE_MODULE *pModule = NE_GetPtr( hModule );
1612     return pModule ? pModule->count : 0;
1613 }
1614
1615
1616 /**********************************************************************
1617  *          GetExpWinVer    (KERNEL.167)
1618  */
1619 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1620 {
1621     NE_MODULE *pModule = NE_GetPtr( hModule );
1622     if ( !pModule ) return 0;
1623     return pModule->ne_expver;
1624 }
1625
1626
1627 /***********************************************************************
1628  *           WinExec     (KERNEL.166)
1629  */
1630 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
1631 {
1632     LPCSTR p, args = NULL;
1633     LPCSTR name_beg, name_end;
1634     LPSTR name, cmdline;
1635     int arglen;
1636     HINSTANCE16 ret;
1637     char buffer[MAX_PATH];
1638
1639     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
1640     {
1641         name_beg = lpCmdLine+1;
1642         p = strchr ( lpCmdLine+1, '"' );
1643         if (p)
1644         {
1645             name_end = p;
1646             args = strchr ( p, ' ' );
1647         }
1648         else /* yes, even valid with trailing '"' missing */
1649             name_end = lpCmdLine+strlen(lpCmdLine);
1650     }
1651     else
1652     {
1653         name_beg = lpCmdLine;
1654         args = strchr( lpCmdLine, ' ' );
1655         name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
1656     }
1657
1658     if ((name_beg == lpCmdLine) && (!args))
1659     { /* just use the original cmdline string as file name */
1660         name = (LPSTR)lpCmdLine;
1661     }
1662     else
1663     {
1664         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
1665             return ERROR_NOT_ENOUGH_MEMORY;
1666         memcpy( name, name_beg, name_end - name_beg );
1667         name[name_end - name_beg] = '\0';
1668     }
1669
1670     if (args)
1671     {
1672         args++;
1673         arglen = strlen(args);
1674         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
1675         cmdline[0] = (BYTE)arglen;
1676         strcpy( cmdline + 1, args );
1677     }
1678     else
1679     {
1680         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
1681         cmdline[0] = cmdline[1] = 0;
1682     }
1683
1684     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
1685
1686     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
1687     {
1688         LOADPARAMS16 params;
1689         WORD showCmd[2];
1690         showCmd[0] = 2;
1691         showCmd[1] = nCmdShow;
1692
1693         params.hEnvironment = 0;
1694         params.cmdLine = MapLS( cmdline );
1695         params.showCmd = MapLS( showCmd );
1696         params.reserved = 0;
1697
1698         ret = LoadModule16( buffer, &params );
1699         UnMapLS( params.cmdLine );
1700         UnMapLS( params.showCmd );
1701     }
1702     else ret = GetLastError();
1703
1704     HeapFree( GetProcessHeap(), 0, cmdline );
1705     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
1706
1707     if (ret == 21 || ret == ERROR_BAD_FORMAT)  /* 32-bit module or unknown executable*/
1708     {
1709         DWORD count;
1710         ReleaseThunkLock( &count );
1711         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
1712         RestoreThunkLock( count );
1713     }
1714     return ret;
1715 }
1716
1717 /***********************************************************************
1718  *           GetProcAddress   (KERNEL.50)
1719  */
1720 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1721 {
1722     WORD ordinal;
1723     FARPROC16 ret;
1724
1725     if (!hModule) hModule = GetCurrentTask();
1726     hModule = GetExePtr( hModule );
1727
1728     if (HIWORD(name) != 0)
1729     {
1730         ordinal = NE_GetOrdinal( hModule, name );
1731         TRACE("%04x '%s'\n", hModule, name );
1732     }
1733     else
1734     {
1735         ordinal = LOWORD(name);
1736         TRACE("%04x %04x\n", hModule, ordinal );
1737     }
1738     if (!ordinal) return (FARPROC16)0;
1739
1740     ret = NE_GetEntryPoint( hModule, ordinal );
1741
1742     TRACE("returning %08x\n", (UINT)ret );
1743     return ret;
1744 }
1745
1746
1747 /***************************************************************************
1748  *              HasGPHandler                    (KERNEL.338)
1749  */
1750 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1751 {
1752     HMODULE16 hModule;
1753     int gpOrdinal;
1754     SEGPTR gpPtr;
1755     GPHANDLERDEF *gpHandler;
1756
1757     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1758          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1759          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1760          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1761          && (gpHandler = MapSL( gpPtr )) != NULL )
1762     {
1763         while (gpHandler->selector)
1764         {
1765             if (    SELECTOROF(address) == gpHandler->selector
1766                  && OFFSETOF(address)   >= gpHandler->rangeStart
1767                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1768                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1769             gpHandler++;
1770         }
1771     }
1772
1773     return 0;
1774 }
1775
1776
1777 /**********************************************************************
1778  *          GetModuleHandle    (KERNEL.47)
1779  *
1780  * Find a module from a module name.
1781  *
1782  * NOTE: The current implementation works the same way the Windows 95 one
1783  *       does. Do not try to 'fix' it, fix the callers.
1784  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1785  *       + It does not care about paths, just about basenames. (same as Windows)
1786  *
1787  * RETURNS
1788  *   LOWORD:
1789  *      the win16 module handle if found
1790  *      0 if not
1791  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1792  *      Always hFirstModule
1793  */
1794 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1795 {
1796     if (HIWORD(name) == 0)
1797         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1798     return MAKELONG(GetModuleHandle16( MapSL(name)), hFirstModule );
1799 }
1800
1801 /**********************************************************************
1802  *          NE_GetModuleByFilename
1803  */
1804 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1805 {
1806     HMODULE16   hModule;
1807     LPSTR       s, p;
1808     BYTE        len, *name_table;
1809     char        tmpstr[MAX_PATH];
1810     NE_MODULE *pModule;
1811
1812     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1813
1814     /* If the base filename of 'name' matches the base filename of the module
1815      * filename of some module (case-insensitive compare):
1816      * Return its handle.
1817      */
1818
1819     /* basename: search backwards in passed name to \ / or : */
1820     s = tmpstr + strlen(tmpstr);
1821     while (s > tmpstr)
1822     {
1823         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1824                 break;
1825         s--;
1826     }
1827
1828     /* search this in loaded filename list */
1829     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1830     {
1831         char            *loadedfn;
1832         OFSTRUCT        *ofs;
1833
1834         pModule = NE_GetPtr( hModule );
1835         if (!pModule) break;
1836         if (!pModule->fileinfo) continue;
1837         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1838
1839         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1840         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1841         /* basename: search backwards in pathname to \ / or : */
1842         while (loadedfn > (char*)ofs->szPathName)
1843         {
1844             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1845                     break;
1846             loadedfn--;
1847         }
1848         /* case insensitive compare ... */
1849         if (!NE_strcasecmp(loadedfn, s))
1850             return hModule;
1851     }
1852     /* If basename (without ext) matches the module name of a module:
1853      * Return its handle.
1854      */
1855
1856     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1857     len = strlen(s);
1858
1859     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1860     {
1861         pModule = NE_GetPtr( hModule );
1862         if (!pModule) break;
1863         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1864
1865         name_table = (BYTE *)pModule + pModule->ne_restab;
1866         if ((*name_table == len) && !NE_strncasecmp(s, name_table+1, len))
1867             return hModule;
1868     }
1869
1870     return 0;
1871 }
1872
1873 /***********************************************************************
1874  *           GetProcAddress16   (KERNEL32.37)
1875  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1876  */
1877 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1878 {
1879     if (!hModule) return 0;
1880     if (HIWORD(hModule))
1881     {
1882         WARN("hModule is Win32 handle (%p)\n", hModule );
1883         return 0;
1884     }
1885     return GetProcAddress16( LOWORD(hModule), name );
1886 }
1887
1888 /**********************************************************************
1889  *          ModuleFirst    (TOOLHELP.59)
1890  */
1891 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1892 {
1893     lpme->wNext = hFirstModule;
1894     return ModuleNext16( lpme );
1895 }
1896
1897
1898 /**********************************************************************
1899  *          ModuleNext    (TOOLHELP.60)
1900  */
1901 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1902 {
1903     NE_MODULE *pModule;
1904     char *name;
1905
1906     if (!lpme->wNext) return FALSE;
1907     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1908     name = (char *)pModule + pModule->ne_restab;
1909     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1910     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1911     lpme->hModule = lpme->wNext;
1912     lpme->wcUsage = pModule->count;
1913     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1914     lpme->wNext = pModule->next;
1915     return TRUE;
1916 }
1917
1918
1919 /**********************************************************************
1920  *          ModuleFindName    (TOOLHELP.61)
1921  */
1922 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1923 {
1924     lpme->wNext = GetModuleHandle16( name );
1925     return ModuleNext16( lpme );
1926 }
1927
1928
1929 /**********************************************************************
1930  *          ModuleFindHandle    (TOOLHELP.62)
1931  */
1932 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1933 {
1934     hModule = GetExePtr( hModule );
1935     lpme->wNext = hModule;
1936     return ModuleNext16( lpme );
1937 }
1938
1939
1940 /***************************************************************************
1941  *          IsRomModule    (KERNEL.323)
1942  */
1943 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
1944 {
1945     return FALSE;
1946 }
1947
1948 /***************************************************************************
1949  *          IsRomFile    (KERNEL.326)
1950  */
1951 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
1952 {
1953     return FALSE;
1954 }
1955
1956 /***********************************************************************
1957  *           create_dummy_module
1958  *
1959  * Create a dummy NE module for Win32 or Winelib.
1960  */
1961 static HMODULE16 create_dummy_module( HMODULE module32 )
1962 {
1963     HMODULE16 hModule;
1964     NE_MODULE *pModule;
1965     SEGTABLEENTRY *pSegment;
1966     char *pStr,*s;
1967     unsigned int len;
1968     const char* basename;
1969     OFSTRUCT *ofs;
1970     int of_size, size;
1971     char filename[MAX_PATH];
1972     IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
1973
1974     if (!nt) return ERROR_BAD_FORMAT;
1975
1976     /* Extract base filename */
1977     len = GetModuleFileNameA( module32, filename, sizeof(filename) );
1978     if (!len || len >= sizeof(filename)) return ERROR_BAD_FORMAT;
1979     basename = strrchr(filename, '\\');
1980     if (!basename) basename = filename;
1981     else basename++;
1982     len = strlen(basename);
1983     if ((s = strchr(basename, '.'))) len = s - basename;
1984
1985     /* Allocate module */
1986     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
1987                     + strlen(filename) + 1;
1988     size = sizeof(NE_MODULE) +
1989                  /* loaded file info */
1990                  ((of_size + 3) & ~3) +
1991                  /* segment table: DS,CS */
1992                  2 * sizeof(SEGTABLEENTRY) +
1993                  /* name table */
1994                  len + 2 +
1995                  /* several empty tables */
1996                  8;
1997
1998     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
1999     if (!hModule) return ERROR_BAD_FORMAT;
2000
2001     FarSetOwner16( hModule, hModule );
2002     pModule = (NE_MODULE *)GlobalLock16( hModule );
2003
2004     /* Set all used entries */
2005     pModule->ne_magic         = IMAGE_OS2_SIGNATURE;
2006     pModule->count            = 1;
2007     pModule->next             = 0;
2008     pModule->ne_flags         = NE_FFLAGS_WIN32;
2009     pModule->ne_autodata      = 0;
2010     pModule->ne_sssp          = MAKESEGPTR( 0, 1 );
2011     pModule->ne_csip          = MAKESEGPTR( 0, 2 );
2012     pModule->ne_heap          = 0;
2013     pModule->ne_stack         = 0;
2014     pModule->ne_cseg          = 2;
2015     pModule->ne_cmod          = 0;
2016     pModule->ne_cbnrestab     = 0;
2017     pModule->fileinfo         = sizeof(NE_MODULE);
2018     pModule->ne_exetyp        = NE_OSFLAGS_WINDOWS;
2019     pModule->self             = hModule;
2020     pModule->module32         = module32;
2021
2022     /* Set version and flags */
2023     pModule->ne_expver = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
2024                           (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
2025     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
2026         pModule->ne_flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
2027
2028     /* Set loaded file information */
2029     ofs = (OFSTRUCT *)(pModule + 1);
2030     memset( ofs, 0, of_size );
2031     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
2032     strcpy( ofs->szPathName, filename );
2033
2034     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
2035     pModule->ne_segtab = (char *)pSegment - (char *)pModule;
2036     /* Data segment */
2037     pSegment->size    = 0;
2038     pSegment->flags   = NE_SEGFLAGS_DATA;
2039     pSegment->minsize = 0x1000;
2040     pSegment++;
2041     /* Code segment */
2042     pSegment->flags   = 0;
2043     pSegment++;
2044
2045     /* Module name */
2046     pStr = (char *)pSegment;
2047     pModule->ne_restab = pStr - (char *)pModule;
2048     assert(len<256);
2049     *pStr = len;
2050     lstrcpynA( pStr+1, basename, len+1 );
2051     pStr += len+2;
2052
2053     /* All tables zero terminated */
2054     pModule->ne_rsrctab = pModule->ne_imptab = pModule->ne_enttab = (char *)pStr - (char *)pModule;
2055
2056     NE_RegisterModule( pModule );
2057     pModule->owner32 = LoadLibraryA( filename );  /* increment the ref count of the 32-bit module */
2058     return hModule;
2059 }
2060
2061 /***********************************************************************
2062  *           PrivateLoadLibrary       (KERNEL32.@)
2063  *
2064  * FIXME: rough guesswork, don't know what "Private" means
2065  */
2066 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
2067 {
2068     return LoadLibrary16(libname);
2069 }
2070
2071 /***********************************************************************
2072  *           PrivateFreeLibrary       (KERNEL32.@)
2073  *
2074  * FIXME: rough guesswork, don't know what "Private" means
2075  */
2076 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
2077 {
2078     FreeLibrary16(handle);
2079 }
2080
2081 /***********************************************************************
2082  *           LoadLibrary32        (KERNEL.452)
2083  *           LoadSystemLibrary32  (KERNEL.482)
2084  */
2085 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
2086 {
2087     HMODULE hModule;
2088     DWORD count;
2089
2090     ReleaseThunkLock( &count );
2091     hModule = LoadLibraryA( libname );
2092     RestoreThunkLock( count );
2093     return hModule;
2094 }
2095
2096 /***************************************************************************
2097  *              MapHModuleLS                    (KERNEL32.@)
2098  */
2099 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod)
2100 {
2101     HMODULE16 ret;
2102     NE_MODULE *pModule;
2103
2104     if (!hmod)
2105         return TASK_GetCurrent()->hInstance;
2106     if (!HIWORD(hmod))
2107         return LOWORD(hmod); /* we already have a 16 bit module handle */
2108     pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
2109     while (pModule)  {
2110         if (pModule->module32 == hmod)
2111             return pModule->self;
2112         pModule = (NE_MODULE*)GlobalLock16(pModule->next);
2113     }
2114     if ((ret = create_dummy_module( hmod )) < 32)
2115     {
2116         SetLastError(ret);
2117         ret = 0;
2118     }
2119     return ret;
2120 }
2121
2122 /***************************************************************************
2123  *              MapHModuleSL                    (KERNEL32.@)
2124  */
2125 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod)
2126 {
2127     NE_MODULE *pModule;
2128
2129     if (!hmod) {
2130         TDB *pTask = TASK_GetCurrent();
2131         hmod = pTask->hModule;
2132     }
2133     pModule = (NE_MODULE*)GlobalLock16(hmod);
2134     if ((pModule->ne_magic != IMAGE_OS2_SIGNATURE) || !(pModule->ne_flags & NE_FFLAGS_WIN32))
2135         return 0;
2136     return pModule->module32;
2137 }
2138
2139 /***************************************************************************
2140  *              MapHInstLS                      (KERNEL32.@)
2141  *              MapHInstLS                      (KERNEL.472)
2142  */
2143 void WINAPI __regs_MapHInstLS( CONTEXT86 *context )
2144 {
2145     context->Eax = MapHModuleLS( (HMODULE)context->Eax );
2146 }
2147 #ifdef DEFINE_REGS_ENTRYPOINT
2148 DEFINE_REGS_ENTRYPOINT( MapHInstLS, 0, 0 );
2149 #endif
2150
2151 /***************************************************************************
2152  *              MapHInstSL                      (KERNEL32.@)
2153  *              MapHInstSL                      (KERNEL.473)
2154  */
2155 void WINAPI __regs_MapHInstSL( CONTEXT86 *context )
2156 {
2157     context->Eax = (DWORD)MapHModuleSL( context->Eax );
2158 }
2159 #ifdef DEFINE_REGS_ENTRYPOINT
2160 DEFINE_REGS_ENTRYPOINT( MapHInstSL, 0, 0 );
2161 #endif
2162
2163 /***************************************************************************
2164  *              MapHInstLS_PN                   (KERNEL32.@)
2165  */
2166 void WINAPI __regs_MapHInstLS_PN( CONTEXT86 *context )
2167 {
2168     if (context->Eax) context->Eax = MapHModuleLS( (HMODULE)context->Eax );
2169 }
2170 #ifdef DEFINE_REGS_ENTRYPOINT
2171 DEFINE_REGS_ENTRYPOINT( MapHInstLS_PN, 0, 0 );
2172 #endif
2173
2174 /***************************************************************************
2175  *              MapHInstSL_PN                   (KERNEL32.@)
2176  */
2177 void WINAPI __regs_MapHInstSL_PN( CONTEXT86 *context )
2178 {
2179     if (context->Eax) context->Eax = (DWORD)MapHModuleSL( context->Eax );
2180 }
2181 #ifdef DEFINE_REGS_ENTRYPOINT
2182 DEFINE_REGS_ENTRYPOINT( MapHInstSL_PN, 0, 0 );
2183 #endif