loader/ne/module.c

   1 /*
   2  * NE modules
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <fcntl.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <ctype.h>
  13 #include "wine/port.h"
  14 #include "wine/winbase16.h"
  15 #include "wine/library.h"
  16 #include "winerror.h"
  17 #include "module.h"
  18 #include "toolhelp.h"
  19 #include "file.h"
  20 #include "task.h"
  21 #include "snoop.h"
  22 #include "builtin16.h"
  23 #include "stackframe.h"
  24 #include "debugtools.h"
  25
  26 DEFAULT_DEBUG_CHANNEL(module);
  27 DECLARE_DEBUG_CHANNEL(loaddll);
  28
  29 /*
  30  * Segment table entry
  31  */
  32 struct ne_segment_table_entry_s
  33 {
  34     WORD seg_data_offset;   /* Sector offset of segment data    */
  35     WORD seg_data_length;   /* Length of segment data           */
  36     WORD seg_flags;         /* Flags associated with this segment       */
  37     WORD min_alloc;         /* Minimum allocation size for this */
  38 };
  39
  40 #define hFirstModule (pThhook->hExeHead)
  41
  42 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  43
  44 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  45 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  46
  47 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
  48
  49 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
  50
  51 /* ### start build ### */
  52 extern WORD CALLBACK NE_CallTo16_word_w(FARPROC16,WORD);
  53 /* ### stop build ### */
  54
  55 /***********************************************************************
  56  *           NE_GetPtr
  57  */
  58 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
  59 {
  60     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
  61 }
  62
  63
  64 /***********************************************************************
  65  *           NE_DumpModule
  66  */
  67 void NE_DumpModule( HMODULE16 hModule )
  68 {
  69     int i, ordinal;
  70     SEGTABLEENTRY *pSeg;
  71     BYTE *pstr;
  72     WORD *pword;
  73     NE_MODULE *pModule;
  74     ET_BUNDLE *bundle;
  75     ET_ENTRY *entry;
  76
  77     if (!(pModule = NE_GetPtr( hModule )))
  78     {
  79         MESSAGE( "**** %04x is not a module handle\n", hModule );
  80         return;
  81     }
  82
  83       /* Dump the module info */
  84     DPRINTF( "---\n" );
  85     DPRINTF( "Module %04x:\n", hModule );
  86     DPRINTF( "count=%d flags=%04x heap=%d stack=%d\n",
  87           pModule->count, pModule->flags,
  88           pModule->heap_size, pModule->stack_size );
  89     DPRINTF( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
  90           pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
  91           pModule->seg_count, pModule->modref_count );
  92     DPRINTF( "os_flags=%d swap_area=%d version=%04x\n",
  93           pModule->os_flags, pModule->min_swap_area,
  94           pModule->expected_version );
  95     if (pModule->flags & NE_FFLAGS_WIN32)
  96         DPRINTF( "PE module=%08x\n", pModule->module32 );
  97
  98       /* Dump the file info */
  99     DPRINTF( "---\n" );
 100     DPRINTF( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
 101
 102       /* Dump the segment table */
 103     DPRINTF( "---\n" );
 104     DPRINTF( "Segment table:\n" );
 105     pSeg = NE_SEG_TABLE( pModule );
 106     for (i = 0; i < pModule->seg_count; i++, pSeg++)
 107         DPRINTF( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 108               i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 109               pSeg->minsize, pSeg->hSeg );
 110
 111       /* Dump the resource table */
 112     DPRINTF( "---\n" );
 113     DPRINTF( "Resource table:\n" );
 114     if (pModule->res_table)
 115     {
 116         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
 117         DPRINTF( "Alignment: %d\n", *pword++ );
 118         while (*pword)
 119         {
 120             NE_TYPEINFO *ptr = (NE_TYPEINFO *)pword;
 121             NE_NAMEINFO *pname = (NE_NAMEINFO *)(ptr + 1);
 122             DPRINTF( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 123             for (i = 0; i < ptr->count; i++, pname++)
 124                 DPRINTF( "offset=%d len=%d id=%04x\n",
 125                       pname->offset, pname->length, pname->id );
 126             pword = (WORD *)pname;
 127         }
 128     }
 129     else DPRINTF( "None\n" );
 130
 131       /* Dump the resident name table */
 132     DPRINTF( "---\n" );
 133     DPRINTF( "Resident-name table:\n" );
 134     pstr = (char *)pModule + pModule->name_table;
 135     while (*pstr)
 136     {
 137         DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 138               *(WORD *)(pstr + *pstr + 1) );
 139         pstr += *pstr + 1 + sizeof(WORD);
 140     }
 141
 142       /* Dump the module reference table */
 143     DPRINTF( "---\n" );
 144     DPRINTF( "Module ref table:\n" );
 145     if (pModule->modref_table)
 146     {
 147         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 148         for (i = 0; i < pModule->modref_count; i++, pword++)
 149         {
 150             char name[10];
 151             GetModuleName16( *pword, name, sizeof(name) );
 152             DPRINTF( "%d: %04x -> '%s'\n", i, *pword, name );
 153         }
 154     }
 155     else DPRINTF( "None\n" );
 156
 157       /* Dump the entry table */
 158     DPRINTF( "---\n" );
 159     DPRINTF( "Entry table:\n" );
 160     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->entry_table);
 161     do {
 162         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 163         DPRINTF( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 164         ordinal = bundle->first;
 165         while (ordinal < bundle->last)
 166         {
 167             if (entry->type == 0xff)
 168                 DPRINTF("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 169             else
 170                 DPRINTF("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 171             entry++;
 172     }
 173     } while ( (bundle->next)
 174            && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 175
 176     /* Dump the non-resident names table */
 177     DPRINTF( "---\n" );
 178     DPRINTF( "Non-resident names table:\n" );
 179     if (pModule->nrname_handle)
 180     {
 181         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 182         while (*pstr)
 183         {
 184             DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 185                    *(WORD *)(pstr + *pstr + 1) );
 186             pstr += *pstr + 1 + sizeof(WORD);
 187         }
 188     }
 189     DPRINTF( "\n" );
 190 }
 191
 192
 193 /***********************************************************************
 194  *           NE_WalkModules
 195  *
 196  * Walk the module list and print the modules.
 197  */
 198 void NE_WalkModules(void)
 199 {
 200     HMODULE16 hModule = hFirstModule;
 201     MESSAGE( "Module Flags Name\n" );
 202     while (hModule)
 203     {
 204         NE_MODULE *pModule = NE_GetPtr( hModule );
 205         if (!pModule)
 206         {
 207             MESSAGE( "Bad module %04x in list\n", hModule );
 208             return;
 209         }
 210         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 211                  *((char *)pModule + pModule->name_table),
 212                  (char *)pModule + pModule->name_table + 1 );
 213         hModule = pModule->next;
 214     }
 215 }
 216
 217
 218 /**********************************************************************
 219  *           NE_RegisterModule
 220  */
 221 void NE_RegisterModule( NE_MODULE *pModule )
 222 {
 223     pModule->next = hFirstModule;
 224     hFirstModule = pModule->self;
 225 }
 226
 227
 228 /***********************************************************************
 229  *           NE_GetOrdinal
 230  *
 231  * Lookup the ordinal for a given name.
 232  */
 233 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 234 {
 235     unsigned char buffer[256], *cpnt;
 236     BYTE len;
 237     NE_MODULE *pModule;
 238
 239     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 240     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 241
 242     TRACE("(%04x,'%s')\n", hModule, name );
 243
 244       /* First handle names of the form '#xxxx' */
 245
 246     if (name[0] == '#') return atoi( name + 1 );
 247
 248       /* Now copy and uppercase the string */
 249
 250     strcpy( buffer, name );
 251     for (cpnt = buffer; *cpnt; cpnt++) *cpnt = FILE_toupper(*cpnt);
 252     len = cpnt - buffer;
 253
 254       /* First search the resident names */
 255
 256     cpnt = (char *)pModule + pModule->name_table;
 257
 258       /* Skip the first entry (module name) */
 259     cpnt += *cpnt + 1 + sizeof(WORD);
 260     while (*cpnt)
 261     {
 262         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 263         {
 264             WORD ordinal = GET_UA_WORD( cpnt + *cpnt + 1 );
 265             TRACE("  Found: ordinal=%d\n", ordinal );
 266             return ordinal;
 267         }
 268         cpnt += *cpnt + 1 + sizeof(WORD);
 269     }
 270
 271       /* Now search the non-resident names table */
 272
 273     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 274     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 275
 276       /* Skip the first entry (module description string) */
 277     cpnt += *cpnt + 1 + sizeof(WORD);
 278     while (*cpnt)
 279     {
 280         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 281         {
 282             WORD ordinal = GET_UA_WORD( cpnt + *cpnt + 1 );
 283             TRACE("  Found: ordinal=%d\n", ordinal );
 284             return ordinal;
 285         }
 286         cpnt += *cpnt + 1 + sizeof(WORD);
 287     }
 288     return 0;
 289 }
 290
 291
 292 /***********************************************************************
 293  *              EntryAddrProc (KERNEL.667) Wine-specific export
 294  *
 295  * Return the entry point for a given ordinal.
 296  */
 297 FARPROC16 WINAPI EntryAddrProc16( HMODULE16 hModule, WORD ordinal )
 298 {
 299     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 300     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 301     return ret;
 302 }
 303
 304 /***********************************************************************
 305  *              NE_GetEntryPoint
 306  */
 307 FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 308 {
 309     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 310 }
 311
 312 /***********************************************************************
 313  *              NE_GetEntryPointEx
 314  */
 315 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 316 {
 317     NE_MODULE *pModule;
 318     WORD sel, offset, i;
 319
 320     ET_ENTRY *entry;
 321     ET_BUNDLE *bundle;
 322
 323     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 324     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 325
 326     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 327     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 328     {
 329         if (!(bundle->next))
 330             return 0;
 331         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 332     }
 333
 334     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 335     for (i=0; i < (ordinal - bundle->first - 1); i++)
 336         entry++;
 337
 338     sel = entry->segnum;
 339     offset = GET_UA_WORD( &entry->offs );
 340
 341     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 342     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 343     if (sel==0xffff)
 344         return (FARPROC16)MAKESEGPTR( sel, offset );
 345     if (!snoop)
 346         return (FARPROC16)MAKESEGPTR( sel, offset );
 347     else
 348         return (FARPROC16)SNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)MAKESEGPTR( sel, offset ));
 349 }
 350
 351
 352 /***********************************************************************
 353  *           NE_SetEntryPoint
 354  *
 355  * Change the value of an entry point. Use with caution!
 356  * It can only change the offset value, not the selector.
 357  */
 358 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 359 {
 360     NE_MODULE *pModule;
 361     ET_ENTRY *entry;
 362     ET_BUNDLE *bundle;
 363     int i;
 364
 365     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 366     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 367
 368     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 369     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 370         {
 371         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 372         if (!(bundle->next))
 373             return 0;
 374     }
 375
 376     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 377     for (i=0; i < (ordinal - bundle->first - 1); i++)
 378         entry++;
 379
 380     PUT_UA_WORD( &entry->offs, offset );
 381     return TRUE;
 382 }
 383
 384
 385 /***********************************************************************
 386  *           NE_OpenFile
 387  */
 388 HANDLE NE_OpenFile( NE_MODULE *pModule )
 389 {
 390     char *name;
 391
 392     static HANDLE cachedfd = INVALID_HANDLE_VALUE;
 393
 394     TRACE("(%p) cache: mod=%p fd=%d\n",
 395            pModule, pCachedModule, cachedfd );
 396     if (pCachedModule == pModule) return cachedfd;
 397     CloseHandle( cachedfd );
 398     pCachedModule = pModule;
 399     name = NE_MODULE_NAME( pModule );
 400     if ((cachedfd = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 401                                    NULL, OPEN_EXISTING, 0, 0 )) == INVALID_HANDLE_VALUE)
 402         MESSAGE( "Can't open file '%s' for module %04x\n", name, pModule->self );
 403     TRACE("opened '%s' -> %d\n",
 404                     name, cachedfd );
 405     return cachedfd;
 406 }
 407
 408
 409 /***********************************************************************
 410  *           NE_LoadExeHeader
 411  */
 412 static HMODULE16 NE_LoadExeHeader( HANDLE hFile, LPCSTR path )
 413 {
 414     IMAGE_DOS_HEADER mz_header;
 415     IMAGE_OS2_HEADER ne_header;
 416     int size;
 417     HMODULE16 hModule;
 418     NE_MODULE *pModule;
 419     BYTE *pData, *pTempEntryTable;
 420     char *buffer, *fastload = NULL;
 421     int fastload_offset = 0, fastload_length = 0;
 422     ET_ENTRY *entry;
 423     ET_BUNDLE *bundle, *oldbundle;
 424     OFSTRUCT *ofs;
 425
 426   /* Read a block from either the file or the fast-load area. */
 427 #define READ(offset,size,buffer) \
 428        ((fastload && ((offset) >= fastload_offset) && \
 429          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 430         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 431         (_llseek( hFile, (offset), SEEK_SET), \
 432          _lread( hFile, (buffer), (size) ) == (size)))
 433
 434     _llseek( hFile, 0, SEEK_SET );
 435     if ((_lread(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
 436         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 437         return (HMODULE16)11;  /* invalid exe */
 438
 439     _llseek( hFile, mz_header.e_lfanew, SEEK_SET );
 440     if (_lread( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
 441         return (HMODULE16)11;  /* invalid exe */
 442
 443     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 444     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 445         MESSAGE("Sorry, this is an OS/2 linear executable (LX) file !\n");
 446         return (HMODULE16)12;
 447     }
 448     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 449
 450     /* We now have a valid NE header */
 451
 452     size = sizeof(NE_MODULE) +
 453              /* segment table */
 454            ne_header.ne_cseg * sizeof(SEGTABLEENTRY) +
 455              /* resource table */
 456            ne_header.ne_restab - ne_header.ne_rsrctab +
 457              /* resident names table */
 458            ne_header.ne_modtab - ne_header.ne_restab +
 459              /* module ref table */
 460            ne_header.ne_cmod * sizeof(WORD) +
 461              /* imported names table */
 462            ne_header.ne_enttab - ne_header.ne_imptab +
 463              /* entry table length */
 464            ne_header.ne_cbenttab +
 465              /* entry table extra conversion space */
 466            sizeof(ET_BUNDLE) +
 467            2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6) +
 468              /* loaded file info */
 469            sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 470
 471     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 472     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 473
 474     FarSetOwner16( hModule, hModule );
 475     pModule = (NE_MODULE *)GlobalLock16( hModule );
 476     memcpy( pModule, &ne_header, sizeof(ne_header) );
 477     pModule->count = 0;
 478     /* check *programs* for default minimal stack size */
 479     if ( (!(pModule->flags & NE_FFLAGS_LIBMODULE))
 480                 && (pModule->stack_size < 0x1400) )
 481                 pModule->stack_size = 0x1400;
 482     pModule->module32 = 0;
 483     pModule->self = hModule;
 484     pModule->self_loading_sel = 0;
 485     pData = (BYTE *)(pModule + 1);
 486
 487     /* Clear internal Wine flags in case they are set in the EXE file */
 488
 489     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 490
 491     /* Read the fast-load area */
 492
 493     if (ne_header.ne_flagsothers & NE_AFLAGS_FASTLOAD)
 494     {
 495         fastload_offset=ne_header.fastload_offset << ne_header.ne_align;
 496         fastload_length=ne_header.fastload_length << ne_header.ne_align;
 497         TRACE("Using fast-load area offset=%x len=%d\n",
 498                         fastload_offset, fastload_length );
 499         if ((fastload = HeapAlloc( GetProcessHeap(), 0, fastload_length )) != NULL)
 500         {
 501             _llseek( hFile, fastload_offset, SEEK_SET);
 502             if (_lread(hFile, fastload, fastload_length) != fastload_length)
 503             {
 504                 HeapFree( GetProcessHeap(), 0, fastload );
 505                 WARN("Error reading fast-load area!\n");
 506                 fastload = NULL;
 507             }
 508         }
 509     }
 510
 511     /* Get the segment table */
 512
 513     pModule->seg_table = pData - (BYTE *)pModule;
 514     buffer = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cseg *
 515                                       sizeof(struct ne_segment_table_entry_s));
 516     if (buffer)
 517     {
 518         int i;
 519         struct ne_segment_table_entry_s *pSeg;
 520
 521         if (!READ( mz_header.e_lfanew + ne_header.ne_segtab,
 522              ne_header.ne_cseg * sizeof(struct ne_segment_table_entry_s),
 523              buffer ))
 524         {
 525             HeapFree( GetProcessHeap(), 0, buffer );
 526             if (fastload)
 527                 HeapFree( GetProcessHeap(), 0, fastload );
 528             GlobalFree16( hModule );
 529             return (HMODULE16)11;  /* invalid exe */
 530         }
 531         pSeg = (struct ne_segment_table_entry_s *)buffer;
 532         for (i = ne_header.ne_cseg; i > 0; i--, pSeg++)
 533         {
 534             memcpy( pData, pSeg, sizeof(*pSeg) );
 535             pData += sizeof(SEGTABLEENTRY);
 536         }
 537         HeapFree( GetProcessHeap(), 0, buffer );
 538     }
 539     else
 540     {
 541         if (fastload)
 542             HeapFree( GetProcessHeap(), 0, fastload );
 543         GlobalFree16( hModule );
 544         return (HMODULE16)11;  /* invalid exe */
 545     }
 546
 547     /* Get the resource table */
 548
 549     if (ne_header.ne_rsrctab < ne_header.ne_restab)
 550     {
 551         pModule->res_table = pData - (BYTE *)pModule;
 552         if (!READ(mz_header.e_lfanew + ne_header.ne_rsrctab,
 553                   ne_header.ne_restab - ne_header.ne_rsrctab,
 554                   pData ))
 555             return (HMODULE16)11;  /* invalid exe */
 556         pData += ne_header.ne_restab - ne_header.ne_rsrctab;
 557         NE_InitResourceHandler( hModule );
 558     }
 559     else pModule->res_table = 0;  /* No resource table */
 560
 561     /* Get the resident names table */
 562
 563     pModule->name_table = pData - (BYTE *)pModule;
 564     if (!READ( mz_header.e_lfanew + ne_header.ne_restab,
 565                ne_header.ne_modtab - ne_header.ne_restab,
 566                pData ))
 567     {
 568         if (fastload)
 569             HeapFree( GetProcessHeap(), 0, fastload );
 570         GlobalFree16( hModule );
 571         return (HMODULE16)11;  /* invalid exe */
 572     }
 573     pData += ne_header.ne_modtab - ne_header.ne_restab;
 574
 575     /* Get the module references table */
 576
 577     if (ne_header.ne_cmod > 0)
 578     {
 579         pModule->modref_table = pData - (BYTE *)pModule;
 580         if (!READ( mz_header.e_lfanew + ne_header.ne_modtab,
 581                   ne_header.ne_cmod * sizeof(WORD),
 582                   pData ))
 583         {
 584             if (fastload)
 585                 HeapFree( GetProcessHeap(), 0, fastload );
 586             GlobalFree16( hModule );
 587             return (HMODULE16)11;  /* invalid exe */
 588         }
 589         pData += ne_header.ne_cmod * sizeof(WORD);
 590     }
 591     else pModule->modref_table = 0;  /* No module references */
 592
 593     /* Get the imported names table */
 594
 595     pModule->import_table = pData - (BYTE *)pModule;
 596     if (!READ( mz_header.e_lfanew + ne_header.ne_imptab,
 597                ne_header.ne_enttab - ne_header.ne_imptab,
 598                pData ))
 599     {
 600         if (fastload)
 601             HeapFree( GetProcessHeap(), 0, fastload );
 602         GlobalFree16( hModule );
 603         return (HMODULE16)11;  /* invalid exe */
 604     }
 605     pData += ne_header.ne_enttab - ne_header.ne_imptab;
 606
 607     /* Load entry table, convert it to the optimized version used by Windows */
 608
 609     if ((pTempEntryTable = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cbenttab)) != NULL)
 610     {
 611         BYTE nr_entries, type, *s;
 612
 613         TRACE("Converting entry table.\n");
 614     pModule->entry_table = pData - (BYTE *)pModule;
 615     if (!READ( mz_header.e_lfanew + ne_header.ne_enttab,
 616                 ne_header.ne_cbenttab, pTempEntryTable ))
 617     {
 618             HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 619             if (fastload)
 620                 HeapFree( GetProcessHeap(), 0, fastload );
 621         GlobalFree16( hModule );
 622         return (HMODULE16)11;  /* invalid exe */
 623     }
 624
 625         s = pTempEntryTable;
 626         TRACE("entry table: offs %04x, len %04x, entries %d\n", ne_header.ne_enttab, ne_header.ne_cbenttab, *s);
 627
 628         bundle = (ET_BUNDLE *)pData;
 629         TRACE("first bundle: %p\n", bundle);
 630         memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 631         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 632
 633         while ((nr_entries = *s++))
 634         {
 635             if ((type = *s++))
 636             {
 637                 bundle->last += nr_entries;
 638                 if (type == 0xff)
 639                 while (nr_entries--)
 640                 {
 641                     entry->type   = type;
 642                     entry->flags  = *s++;
 643                     s += 2;
 644                     entry->segnum = *s++;
 645                     entry->offs   = *(WORD *)s; s += 2;
 646                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 647                     entry++;
 648                 }
 649                 else
 650                 while (nr_entries--)
 651                 {
 652                     entry->type   = type;
 653                     entry->flags  = *s++;
 654                     entry->segnum = type;
 655                     entry->offs   = *(WORD *)s; s += 2;
 656                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 657                     entry++;
 658                 }
 659             }
 660             else
 661             {
 662                 if (bundle->first == bundle->last)
 663                 {
 664                     bundle->first += nr_entries;
 665                     bundle->last += nr_entries;
 666                 }
 667                 else
 668                 {
 669                     oldbundle = bundle;
 670                     oldbundle->next = ((int)entry - (int)pModule);
 671                     bundle = (ET_BUNDLE *)entry;
 672                     TRACE("new bundle: %p\n", bundle);
 673                     bundle->first = bundle->last =
 674                         oldbundle->last + nr_entries;
 675                     bundle->next = 0;
 676                     (BYTE *)entry += sizeof(ET_BUNDLE);
 677                 }
 678             }
 679         }
 680         HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 681     }
 682     else
 683     {
 684         if (fastload)
 685             HeapFree( GetProcessHeap(), 0, fastload );
 686         GlobalFree16( hModule );
 687         return (HMODULE16)11;  /* invalid exe */
 688     }
 689
 690     pData += ne_header.ne_cbenttab + sizeof(ET_BUNDLE) +
 691              2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6);
 692
 693     if ((DWORD)entry > (DWORD)pData)
 694        ERR("converted entry table bigger than reserved space !!!\nentry: %p, pData: %p. Please report !\n", entry, pData);
 695
 696     /* Store the filename information */
 697
 698     pModule->fileinfo = pData - (BYTE *)pModule;
 699     size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 700     ofs = (OFSTRUCT *)pData;
 701     ofs->cBytes = size - 1;
 702     ofs->fFixedDisk = 1;
 703     strcpy( ofs->szPathName, path );
 704     pData += size;
 705
 706     /* Free the fast-load area */
 707
 708 #undef READ
 709     if (fastload)
 710         HeapFree( GetProcessHeap(), 0, fastload );
 711
 712     /* Get the non-resident names table */
 713
 714     if (ne_header.ne_cbnrestab)
 715     {
 716         pModule->nrname_handle = GlobalAlloc16( 0, ne_header.ne_cbnrestab );
 717         if (!pModule->nrname_handle)
 718         {
 719             GlobalFree16( hModule );
 720             return (HMODULE16)11;  /* invalid exe */
 721         }
 722         FarSetOwner16( pModule->nrname_handle, hModule );
 723         buffer = GlobalLock16( pModule->nrname_handle );
 724         _llseek( hFile, ne_header.ne_nrestab, SEEK_SET );
 725         if (_lread( hFile, buffer, ne_header.ne_cbnrestab )
 726               != ne_header.ne_cbnrestab)
 727         {
 728             GlobalFree16( pModule->nrname_handle );
 729             GlobalFree16( hModule );
 730             return (HMODULE16)11;  /* invalid exe */
 731         }
 732     }
 733     else pModule->nrname_handle = 0;
 734
 735     /* Allocate a segment for the implicitly-loaded DLLs */
 736
 737     if (pModule->modref_count)
 738     {
 739         pModule->dlls_to_init = GlobalAlloc16( GMEM_ZEROINIT,
 740                                                (pModule->modref_count+1)*sizeof(HMODULE16) );
 741         if (!pModule->dlls_to_init)
 742         {
 743             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 744             GlobalFree16( hModule );
 745             return (HMODULE16)11;  /* invalid exe */
 746         }
 747         FarSetOwner16( pModule->dlls_to_init, hModule );
 748     }
 749     else pModule->dlls_to_init = 0;
 750
 751     NE_RegisterModule( pModule );
 752     SNOOP16_RegisterDLL(pModule,path);
 753     return hModule;
 754 }
 755
 756
 757 /***********************************************************************
 758  *           NE_LoadDLLs
 759  *
 760  * Load all DLLs implicitly linked to a module.
 761  */
 762 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 763 {
 764     int i;
 765     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 766     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 767
 768     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 769     {
 770         char buffer[260], *p;
 771         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 772         memcpy( buffer, pstr + 1, *pstr );
 773         *(buffer + *pstr) = 0; /* terminate it */
 774
 775         TRACE("Loading '%s'\n", buffer );
 776         if (!(*pModRef = GetModuleHandle16( buffer )))
 777         {
 778             /* If the DLL is not loaded yet, load it and store */
 779             /* its handle in the list of DLLs to initialize.   */
 780             HMODULE16 hDLL;
 781
 782             /* Append .DLL to name if no extension present */
 783             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 784                     strcat( buffer, ".DLL" );
 785
 786             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 787             {
 788                 /* FIXME: cleanup what was done */
 789
 790                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 791                      buffer, *((BYTE*)pModule + pModule->name_table),
 792                      (char *)pModule + pModule->name_table + 1, hDLL );
 793                 return FALSE;
 794             }
 795             *pModRef = GetExePtr( hDLL );
 796             *pDLLs++ = *pModRef;
 797         }
 798         else  /* Increment the reference count of the DLL */
 799         {
 800             NE_MODULE *pOldDLL;
 801
 802             pOldDLL = NE_GetPtr( *pModRef );
 803             if (pOldDLL) pOldDLL->count++;
 804         }
 805     }
 806     return TRUE;
 807 }
 808
 809
 810 /**********************************************************************
 811  *          NE_DoLoadModule
 812  *
 813  * Load first instance of NE module from file.
 814  *
 815  * pModule must point to a module structure prepared by NE_LoadExeHeader.
 816  * This routine must never be called twice on a module.
 817  *
 818  */
 819 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
 820 {
 821     /* Allocate the segments for this module */
 822
 823     if (!NE_CreateAllSegments( pModule ))
 824         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
 825
 826     /* Load the referenced DLLs */
 827
 828     if (!NE_LoadDLLs( pModule ))
 829         return ERROR_FILE_NOT_FOUND; /* 2 */
 830
 831     /* Load the segments */
 832
 833     NE_LoadAllSegments( pModule );
 834
 835     /* Make sure the usage count is 1 on the first loading of  */
 836     /* the module, even if it contains circular DLL references */
 837
 838     pModule->count = 1;
 839
 840     return NE_GetInstance( pModule );
 841 }
 842
 843 /**********************************************************************
 844  *          NE_LoadModule
 845  *
 846  * Load first instance of NE module. (Note: caller is responsible for
 847  * ensuring the module isn't already loaded!)
 848  *
 849  * If the module turns out to be an executable module, only a
 850  * handle to a module stub is returned; this needs to be initialized
 851  * by calling NE_DoLoadModule later, in the context of the newly
 852  * created process.
 853  *
 854  * If lib_only is TRUE, however, the module is perforce treated
 855  * like a DLL module, even if it is an executable module.
 856  *
 857  */
 858 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
 859 {
 860     NE_MODULE *pModule;
 861     HMODULE16 hModule;
 862     HINSTANCE16 hInstance;
 863     HFILE16 hFile;
 864     OFSTRUCT ofs;
 865
 866     /* Open file */
 867     if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
 868         return (HMODULE16)2;  /* File not found */
 869
 870     hModule = NE_LoadExeHeader( DosFileHandleToWin32Handle(hFile), ofs.szPathName );
 871     _lclose16( hFile );
 872     if (hModule < 32) return hModule;
 873
 874     pModule = NE_GetPtr( hModule );
 875     if ( !pModule ) return hModule;
 876
 877     if ( !lib_only && !( pModule->flags & NE_FFLAGS_LIBMODULE ) )
 878         return hModule;
 879
 880     hInstance = NE_DoLoadModule( pModule );
 881     if ( hInstance < 32 )
 882     {
 883         /* cleanup ... */
 884         NE_FreeModule( hModule, 0 );
 885     }
 886
 887     return hInstance;
 888 }
 889
 890
 891 /**********************************************************************
 892  *          MODULE_LoadModule16
 893  *
 894  * Load a NE module in the order of the loadorder specification.
 895  * The caller is responsible that the module is not loaded already.
 896  *
 897  */
 898 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
 899 {
 900         HINSTANCE16 hinst = 2;
 901         enum loadorder_type loadorder[LOADORDER_NTYPES];
 902         int i;
 903         const char *filetype = "";
 904
 905         MODULE_GetLoadOrder(loadorder, libname, FALSE);
 906
 907         for(i = 0; i < LOADORDER_NTYPES; i++)
 908         {
 909             if (loadorder[i] == LOADORDER_INVALID) break;
 910
 911                 switch(loadorder[i])
 912                 {
 913                 case LOADORDER_DLL:
 914                         TRACE("Trying native dll '%s'\n", libname);
 915                         hinst = NE_LoadModule(libname, lib_only);
 916                         filetype = "native";
 917                         break;
 918
 919                 case LOADORDER_BI:
 920                         TRACE("Trying built-in '%s'\n", libname);
 921                         hinst = BUILTIN_LoadModule(libname);
 922                         filetype = "builtin";
 923                         break;
 924
 925                 case LOADORDER_SO: /* This is not supported for NE modules */
 926                 default:
 927                         hinst = 2;
 928                         break;
 929                 }
 930
 931                 if(hinst >= 32)
 932                 {
 933                         if(!implicit)
 934                         {
 935                                 HMODULE16 hModule;
 936                                 NE_MODULE *pModule;
 937
 938                                 hModule = GetModuleHandle16(libname);
 939                                 if(!hModule)
 940                                 {
 941                                         ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle. Filename too long ?\n",
 942                                                 libname, hinst);
 943                                         return 6;       /* ERROR_INVALID_HANDLE seems most appropriate */
 944                                 }
 945
 946                                 pModule = NE_GetPtr(hModule);
 947                                 if(!pModule)
 948                                 {
 949                                         ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
 950                                                 libname, hinst);
 951                                         return 6;       /* ERROR_INVALID_HANDLE seems most appropriate */
 952                                 }
 953
 954                                 TRACE("Loaded module '%s' at 0x%04x.\n", libname, hinst);
 955                                 if (!TRACE_ON(module))
 956                                     TRACE_(loaddll)("Loaded module '%s' : %s\n", libname, filetype);
 957
 958                                 /*
 959                                  * Call initialization routines for all loaded DLLs. Note that
 960                                  * when we load implicitly linked DLLs this will be done by InitTask().
 961                                  */
 962                                 if(pModule->flags & NE_FFLAGS_LIBMODULE)
 963                                 {
 964                                         NE_InitializeDLLs(hModule);
 965                                         NE_DllProcessAttach(hModule);
 966                                 }
 967                         }
 968                         return hinst;
 969                 }
 970
 971                 if(hinst != 2)
 972                 {
 973                         /* We quit searching when we get another error than 'File not found' */
 974                         break;
 975                 }
 976         }
 977         return hinst;   /* The last error that occured */
 978 }
 979
 980
 981 /**********************************************************************
 982  *          NE_CreateThread
 983  *
 984  * Create the thread for a 16-bit module.
 985  */
 986 static HINSTANCE16 NE_CreateThread( NE_MODULE *pModule, WORD cmdShow, LPCSTR cmdline )
 987 {
 988     HANDLE hThread;
 989     TDB *pTask;
 990     HTASK16 hTask;
 991     HINSTANCE16 instance = 0;
 992
 993     if (!(hTask = TASK_SpawnTask( pModule, cmdShow, cmdline + 1, *cmdline, &hThread )))
 994         return 0;
 995
 996     /* Post event to start the task */
 997     PostEvent16( hTask );
 998
 999     /* Wait until we get the instance handle */
1000     do
1001     {
1002         DirectedYield16( hTask );
1003         if (!IsTask16( hTask ))  /* thread has died */
1004         {
1005             DWORD exit_code;
1006             WaitForSingleObject( hThread, INFINITE );
1007             GetExitCodeThread( hThread, &exit_code );
1008             CloseHandle( hThread );
1009             return exit_code;
1010         }
1011         if (!(pTask = TASK_GetPtr( hTask ))) break;
1012         instance = pTask->hInstance;
1013         GlobalUnlock16( hTask );
1014     } while (!instance);
1015
1016     CloseHandle( hThread );
1017     return instance;
1018 }
1019
1020
1021 /**********************************************************************
1022  *          LoadModule      (KERNEL.45)
1023  *          LoadModule16    (KERNEL32.@)
1024  */
1025 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
1026 {
1027     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
1028     LOADPARAMS16 *params;
1029     HMODULE16 hModule;
1030     NE_MODULE *pModule;
1031     LPSTR cmdline;
1032     WORD cmdShow;
1033
1034     /* Load module */
1035
1036     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1037     {
1038         /* Special case: second instance of an already loaded NE module */
1039
1040         if ( !( pModule = NE_GetPtr( hModule ) ) ) return (HINSTANCE16)11;
1041         if ( pModule->module32 ) return (HINSTANCE16)21;
1042
1043         /* Increment refcount */
1044
1045         pModule->count++;
1046     }
1047     else
1048     {
1049         /* Main case: load first instance of NE module */
1050
1051         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1052             return hModule;
1053
1054         if ( !(pModule = NE_GetPtr( hModule )) )
1055             return (HINSTANCE16)11;
1056     }
1057
1058     /* If library module, we just retrieve the instance handle */
1059
1060     if ( ( pModule->flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1061         return NE_GetInstance( pModule );
1062
1063     /*
1064      *  At this point, we need to create a new process.
1065      *
1066      *  pModule points either to an already loaded module, whose refcount
1067      *  has already been incremented (to avoid having the module vanish
1068      *  in the meantime), or else to a stub module which contains only header
1069      *  information.
1070      */
1071     params = (LOADPARAMS16 *)paramBlock;
1072     cmdShow = ((WORD *)MapSL(params->showCmd))[1];
1073     cmdline = MapSL( params->cmdLine );
1074     return NE_CreateThread( pModule, cmdShow, cmdline );
1075 }
1076
1077
1078 /**********************************************************************
1079  *          NE_StartMain
1080  *
1081  * Start the main NE task.
1082  */
1083 HINSTANCE16 NE_StartMain( LPCSTR name, HANDLE file )
1084 {
1085     STARTUPINFOA info;
1086     HMODULE16 hModule;
1087     NE_MODULE *pModule;
1088     INT len;
1089     LPSTR pCmdLine, cmdline = GetCommandLineA();
1090
1091     if ((hModule = NE_LoadExeHeader( file, name )) < 32) return hModule;
1092
1093     if (!(pModule = NE_GetPtr( hModule ))) return (HINSTANCE16)11;
1094     if (pModule->flags & NE_FFLAGS_LIBMODULE)
1095     {
1096         MESSAGE( "%s is not a valid Win16 executable\n", name );
1097         ExitProcess( ERROR_BAD_EXE_FORMAT );
1098     }
1099
1100     while (*cmdline && *cmdline != ' ') cmdline++;
1101     if (*cmdline) cmdline++;
1102     len = strlen(cmdline);
1103     pCmdLine = HeapAlloc(GetProcessHeap(), 0, len+2);
1104     if (pCmdLine)
1105     {
1106         strcpy(pCmdLine+1, cmdline);
1107         *pCmdLine = len;
1108     }
1109     GetStartupInfoA( &info );
1110     if (!(info.dwFlags & STARTF_USESHOWWINDOW)) info.wShowWindow = 1;
1111
1112     return NE_CreateThread( pModule, info.wShowWindow, pCmdLine );
1113 }
1114
1115
1116 /**********************************************************************
1117  *          NE_StartTask
1118  *
1119  * Startup code for a new 16-bit task.
1120  */
1121 DWORD NE_StartTask(void)
1122 {
1123     TDB *pTask = TASK_GetCurrent();
1124     NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
1125     HINSTANCE16 hInstance, hPrevInstance;
1126     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1127     WORD sp;
1128
1129     if ( pModule->count > 0 )
1130     {
1131         /* Second instance of an already loaded NE module */
1132         /* Note that the refcount was already incremented by the parent */
1133
1134         hPrevInstance = NE_GetInstance( pModule );
1135
1136         if ( pModule->dgroup )
1137             if ( NE_CreateSegment( pModule, pModule->dgroup ) )
1138                 NE_LoadSegment( pModule, pModule->dgroup );
1139
1140         hInstance = NE_GetInstance( pModule );
1141         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->dgroup, hPrevInstance);
1142
1143     }
1144     else
1145     {
1146         /* Load first instance of NE module */
1147
1148         pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1149
1150         hInstance = NE_DoLoadModule( pModule );
1151         hPrevInstance = 0;
1152     }
1153
1154     if ( hInstance >= 32 )
1155     {
1156         CONTEXT86 context;
1157
1158         /* Enter instance handles into task struct */
1159
1160         pTask->hInstance = hInstance;
1161         pTask->hPrevInstance = hPrevInstance;
1162
1163         /* Free the previous stack selector */
1164         FreeSelector16( SELECTOROF(pTask->teb->cur_stack) );
1165
1166         /* Use DGROUP for 16-bit stack */
1167
1168         if (!(sp = pModule->sp))
1169             sp = pSegTable[pModule->ss-1].minsize + pModule->stack_size;
1170         sp &= ~1;
1171         sp -= sizeof(STACK16FRAME);
1172         pTask->teb->cur_stack = MAKESEGPTR( GlobalHandleToSel16(hInstance), sp );
1173
1174         /* Registers at initialization must be:
1175          * ax   zero
1176          * bx   stack size in bytes
1177          * cx   heap size in bytes
1178          * si   previous app instance
1179          * di   current app instance
1180          * bp   zero
1181          * es   selector to the PSP
1182          * ds   dgroup of the application
1183          * ss   stack selector
1184          * sp   top of the stack
1185          */
1186         memset( &context, 0, sizeof(context) );
1187         context.SegCs  = GlobalHandleToSel16(pSegTable[pModule->cs - 1].hSeg);
1188         context.SegDs  = GlobalHandleToSel16(pTask->hInstance);
1189         context.SegEs  = pTask->hPDB;
1190         context.Eip    = pModule->ip;
1191         context.Ebx    = pModule->stack_size;
1192         context.Ecx    = pModule->heap_size;
1193         context.Edi    = pTask->hInstance;
1194         context.Esi    = pTask->hPrevInstance;
1195
1196         /* Now call 16-bit entry point */
1197
1198         TRACE("Starting main program: cs:ip=%04lx:%04lx ds=%04lx ss:sp=%04x:%04x\n",
1199               context.SegCs, context.Eip, context.SegDs,
1200               SELECTOROF(pTask->teb->cur_stack),
1201               OFFSETOF(pTask->teb->cur_stack) );
1202
1203         wine_call_to_16_regs_short( &context, 0 );
1204         ExitThread( LOWORD(context.Eax) );
1205     }
1206     return hInstance;  /* error code */
1207 }
1208
1209 /***********************************************************************
1210  *           LoadLibrary     (KERNEL.95)
1211  *           LoadLibrary16   (KERNEL32.35)
1212  */
1213 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1214 {
1215     return LoadModule16(libname, (LPVOID)-1 );
1216 }
1217
1218
1219 /**********************************************************************
1220  *          MODULE_CallWEP
1221  *
1222  * Call a DLL's WEP, allowing it to shut down.
1223  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1224  */
1225 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1226 {
1227     FARPROC16 WEP = GetProcAddress16( hModule, "WEP" );
1228     if (!WEP) return FALSE;
1229     return NE_CallTo16_word_w( WEP, WEP_FREE_DLL );
1230 }
1231
1232
1233 /**********************************************************************
1234  *          NE_FreeModule
1235  *
1236  * Implementation of FreeModule16().
1237  */
1238 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1239 {
1240     HMODULE16 *hPrevModule;
1241     NE_MODULE *pModule;
1242     HMODULE16 *pModRef;
1243     int i;
1244
1245     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1246     hModule = pModule->self;
1247
1248     TRACE("%04x count %d\n", hModule, pModule->count );
1249
1250     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1251     else pModule->count = 0;
1252
1253     if (pModule->flags & NE_FFLAGS_BUILTIN)
1254         return FALSE;  /* Can't free built-in module */
1255
1256     if (call_wep && !(pModule->flags & NE_FFLAGS_WIN32))
1257     {
1258         if (pModule->flags & NE_FFLAGS_LIBMODULE)
1259         {
1260             MODULE_CallWEP( hModule );
1261
1262             /* Free the objects owned by the DLL module */
1263             TASK_CallTaskSignalProc( USIG16_DLL_UNLOAD, hModule );
1264             PROCESS_CallUserSignalProc( USIG_DLL_UNLOAD_WIN16, hModule );
1265         }
1266         else
1267             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1268     }
1269
1270
1271     /* Clear magic number just in case */
1272
1273     pModule->magic = pModule->self = 0;
1274
1275       /* Remove it from the linked list */
1276
1277     hPrevModule = &hFirstModule;
1278     while (*hPrevModule && (*hPrevModule != hModule))
1279     {
1280         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1281     }
1282     if (*hPrevModule) *hPrevModule = pModule->next;
1283
1284     /* Free the referenced modules */
1285
1286     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
1287     for (i = 0; i < pModule->modref_count; i++, pModRef++)
1288     {
1289         NE_FreeModule( *pModRef, call_wep );
1290     }
1291
1292     /* Free the module storage */
1293
1294     GlobalFreeAll16( hModule );
1295
1296     /* Remove module from cache */
1297
1298     if (pCachedModule == pModule) pCachedModule = NULL;
1299     return TRUE;
1300 }
1301
1302
1303 /**********************************************************************
1304  *          FreeModule    (KERNEL.46)
1305  */
1306 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1307 {
1308     return NE_FreeModule( hModule, TRUE );
1309 }
1310
1311
1312 /***********************************************************************
1313  *           FreeLibrary     (KERNEL.96)
1314  *           FreeLibrary16   (KERNEL32.36)
1315  */
1316 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1317 {
1318     TRACE("%04x\n", handle );
1319     FreeModule16( handle );
1320 }
1321
1322
1323 /**********************************************************************
1324  *          GetModuleName    (KERNEL.27)
1325  */
1326 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1327 {
1328     NE_MODULE *pModule;
1329     BYTE *p;
1330
1331     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1332     p = (BYTE *)pModule + pModule->name_table;
1333     if (count > *p) count = *p + 1;
1334     if (count > 0)
1335     {
1336         memcpy( buf, p + 1, count - 1 );
1337         buf[count-1] = '\0';
1338     }
1339     return TRUE;
1340 }
1341
1342
1343 /**********************************************************************
1344  *          GetModuleUsage    (KERNEL.48)
1345  */
1346 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1347 {
1348     NE_MODULE *pModule = NE_GetPtr( hModule );
1349     return pModule ? pModule->count : 0;
1350 }
1351
1352
1353 /**********************************************************************
1354  *          GetExpWinVer    (KERNEL.167)
1355  */
1356 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1357 {
1358     NE_MODULE *pModule = NE_GetPtr( hModule );
1359     if ( !pModule ) return 0;
1360
1361     /*
1362      * For built-in modules, fake the expected version the module should
1363      * have according to the Windows version emulated by Wine
1364      */
1365     if ( !pModule->expected_version )
1366     {
1367         OSVERSIONINFOA versionInfo;
1368         versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1369
1370         if ( GetVersionExA( &versionInfo ) )
1371             pModule->expected_version =
1372                      (versionInfo.dwMajorVersion & 0xff) << 8
1373                    | (versionInfo.dwMinorVersion & 0xff);
1374     }
1375
1376     return pModule->expected_version;
1377 }
1378
1379
1380 /**********************************************************************
1381  *          GetModuleFileName      (KERNEL.49)
1382  *          GetModuleFileName16    (KERNEL32.@)
1383  *
1384  * Comment: see GetModuleFileNameA
1385  *
1386  * Even if invoked by second instance of a program,
1387  * it still returns path of first one.
1388  */
1389 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1390                                   INT16 nSize )
1391 {
1392     NE_MODULE *pModule;
1393
1394     /* Win95 does not query hModule if set to 0 !
1395      * Is this wrong or maybe Win3.1 only ? */
1396     if (!hModule) hModule = GetCurrentTask();
1397
1398     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1399     lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1400     if (pModule->expected_version >= 0x400)
1401         GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, nSize);
1402     TRACE("%04x -> '%s'\n", hModule, lpFileName );
1403     return strlen(lpFileName);
1404 }
1405
1406
1407 /**********************************************************************
1408  *          GetModuleHandle    (KERNEL.47)
1409  *
1410  * Find a module from a module name.
1411  *
1412  * NOTE: The current implementation works the same way the Windows 95 one
1413  *       does. Do not try to 'fix' it, fix the callers.
1414  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1415  *       + It does not care about paths, just about basenames. (same as Windows)
1416  *
1417  * RETURNS
1418  *   LOWORD:
1419  *      the win16 module handle if found
1420  *      0 if not
1421  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1422  *      Always hFirstModule
1423  */
1424 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1425 {
1426     if (HIWORD(name) == 0)
1427         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1428     return MAKELONG(GetModuleHandle16( MapSL(name)), hFirstModule );
1429 }
1430
1431 /***********************************************************************
1432  *          GetModuleHandle16 (KERNEL32.@)
1433  */
1434 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1435 {
1436     HMODULE16   hModule = hFirstModule;
1437     LPSTR       s;
1438     BYTE        len, *name_table;
1439     char        tmpstr[MAX_PATH];
1440     NE_MODULE *pModule;
1441
1442     TRACE("(%s)\n", name);
1443
1444     if (!HIWORD(name))
1445         return GetExePtr(LOWORD(name));
1446
1447     len = strlen(name);
1448     if (!len)
1449         return 0;
1450
1451     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1452
1453     /* If 'name' matches exactly the module name of a module:
1454      * Return its handle.
1455      */
1456     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1457     {
1458         pModule = NE_GetPtr( hModule );
1459         if (!pModule) break;
1460         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1461
1462         name_table = (BYTE *)pModule + pModule->name_table;
1463         if ((*name_table == len) && !strncmp(name, name_table+1, len))
1464             return hModule;
1465     }
1466
1467     /* If uppercased 'name' matches exactly the module name of a module:
1468      * Return its handle
1469      */
1470     for (s = tmpstr; *s; s++) *s = FILE_toupper(*s);
1471
1472     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1473     {
1474         pModule = NE_GetPtr( hModule );
1475         if (!pModule) break;
1476         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1477
1478         name_table = (BYTE *)pModule + pModule->name_table;
1479         /* FIXME: the strncasecmp is WRONG. It should not be case insensitive,
1480          * but case sensitive! (Unfortunately Winword 6 and subdlls have
1481          * lowercased module names, but try to load uppercase DLLs, so this
1482          * 'i' compare is just a quickfix until the loader handles that
1483          * correctly. -MM 990705
1484          */
1485         if ((*name_table == len) && !FILE_strncasecmp(tmpstr, name_table+1, len))
1486             return hModule;
1487     }
1488
1489     /* If the base filename of 'name' matches the base filename of the module
1490      * filename of some module (case-insensitive compare):
1491      * Return its handle.
1492      */
1493
1494     /* basename: search backwards in passed name to \ / or : */
1495     s = tmpstr + strlen(tmpstr);
1496     while (s > tmpstr)
1497     {
1498         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1499                 break;
1500         s--;
1501     }
1502
1503     /* search this in loaded filename list */
1504     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1505     {
1506         char            *loadedfn;
1507         OFSTRUCT        *ofs;
1508
1509         pModule = NE_GetPtr( hModule );
1510         if (!pModule) break;
1511         if (!pModule->fileinfo) continue;
1512         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1513
1514         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1515         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1516         /* basename: search backwards in pathname to \ / or : */
1517         while (loadedfn > (char*)ofs->szPathName)
1518         {
1519             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1520                     break;
1521             loadedfn--;
1522         }
1523         /* case insensitive compare ... */
1524         if (!FILE_strcasecmp(loadedfn, s))
1525             return hModule;
1526     }
1527
1528     /* If the extension of 'name' is '.EXE' and the base filename of 'name'
1529      * matches the base filename of the module filename of some 32-bit module:
1530      * Return the corresponding 16-bit dummy module handle.
1531      */
1532     if (len >= 4 && !FILE_strcasecmp(name+len-4, ".EXE"))
1533     {
1534         HMODULE hModule = GetModuleHandleA( name );
1535         if ( hModule )
1536             return MapHModuleLS( hModule );
1537     }
1538
1539     if (!strcmp(tmpstr,"MSDOS"))
1540         return 1;
1541
1542     if (!strcmp(tmpstr,"TIMER"))
1543     {
1544         FIXME("Eh... Should return caller's code segment, expect crash\n");
1545         return 0;
1546     }
1547
1548     return 0;
1549 }
1550
1551 /**********************************************************************
1552  *          NE_GetModuleByFilename
1553  */
1554 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1555 {
1556     HMODULE16   hModule;
1557     LPSTR       s, p;
1558     BYTE        len, *name_table;
1559     char        tmpstr[MAX_PATH];
1560     NE_MODULE *pModule;
1561
1562     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1563
1564     /* If the base filename of 'name' matches the base filename of the module
1565      * filename of some module (case-insensitive compare):
1566      * Return its handle.
1567      */
1568
1569     /* basename: search backwards in passed name to \ / or : */
1570     s = tmpstr + strlen(tmpstr);
1571     while (s > tmpstr)
1572     {
1573         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1574                 break;
1575         s--;
1576     }
1577
1578     /* search this in loaded filename list */
1579     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1580     {
1581         char            *loadedfn;
1582         OFSTRUCT        *ofs;
1583
1584         pModule = NE_GetPtr( hModule );
1585         if (!pModule) break;
1586         if (!pModule->fileinfo) continue;
1587         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1588
1589         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1590         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1591         /* basename: search backwards in pathname to \ / or : */
1592         while (loadedfn > (char*)ofs->szPathName)
1593         {
1594             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1595                     break;
1596             loadedfn--;
1597         }
1598         /* case insensitive compare ... */
1599         if (!FILE_strcasecmp(loadedfn, s))
1600             return hModule;
1601     }
1602     /* If basename (without ext) matches the module name of a module:
1603      * Return its handle.
1604      */
1605
1606     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1607     len = strlen(s);
1608
1609     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1610     {
1611         pModule = NE_GetPtr( hModule );
1612         if (!pModule) break;
1613         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1614
1615         name_table = (BYTE *)pModule + pModule->name_table;
1616         if ((*name_table == len) && !FILE_strncasecmp(s, name_table+1, len))
1617             return hModule;
1618     }
1619
1620     return 0;
1621 }
1622
1623 /**********************************************************************
1624  *          ModuleFirst    (TOOLHELP.59)
1625  */
1626 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1627 {
1628     lpme->wNext = hFirstModule;
1629     return ModuleNext16( lpme );
1630 }
1631
1632
1633 /**********************************************************************
1634  *          ModuleNext    (TOOLHELP.60)
1635  */
1636 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1637 {
1638     NE_MODULE *pModule;
1639     char *name;
1640
1641     if (!lpme->wNext) return FALSE;
1642     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1643     name = (char *)pModule + pModule->name_table;
1644     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1645     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1646     lpme->hModule = lpme->wNext;
1647     lpme->wcUsage = pModule->count;
1648     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1649     lpme->wNext = pModule->next;
1650     return TRUE;
1651 }
1652
1653
1654 /**********************************************************************
1655  *          ModuleFindName    (TOOLHELP.61)
1656  */
1657 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1658 {
1659     lpme->wNext = GetModuleHandle16( name );
1660     return ModuleNext16( lpme );
1661 }
1662
1663
1664 /**********************************************************************
1665  *          ModuleFindHandle    (TOOLHELP.62)
1666  */
1667 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1668 {
1669     hModule = GetExePtr( hModule );
1670     lpme->wNext = hModule;
1671     return ModuleNext16( lpme );
1672 }
1673
1674
1675 /***************************************************************************
1676  *          IsRomModule    (KERNEL.323)
1677  */
1678 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
1679 {
1680     return FALSE;
1681 }
1682
1683 /***************************************************************************
1684  *          IsRomFile    (KERNEL.326)
1685  */
1686 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
1687 {
1688     return FALSE;
1689 }
1690
1691 /***************************************************************************
1692  *              MapHModuleLS                    (KERNEL32.@)
1693  */
1694 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod) {
1695         NE_MODULE       *pModule;
1696
1697         if (!hmod)
1698                 return TASK_GetCurrent()->hInstance;
1699         if (!HIWORD(hmod))
1700                 return hmod; /* we already have a 16 bit module handle */
1701         pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1702         while (pModule)  {
1703                 if (pModule->module32 == hmod)
1704                         return pModule->self;
1705                 pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1706         }
1707         return 0;
1708 }
1709
1710 /***************************************************************************
1711  *              MapHModuleSL                    (KERNEL32.@)
1712  */
1713 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod) {
1714         NE_MODULE       *pModule;
1715
1716         if (!hmod) {
1717                 TDB *pTask = TASK_GetCurrent();
1718                 hmod = pTask->hModule;
1719         }
1720         pModule = (NE_MODULE*)GlobalLock16(hmod);
1721         if (    (pModule->magic!=IMAGE_OS2_SIGNATURE)   ||
1722                 !(pModule->flags & NE_FFLAGS_WIN32)
1723         )
1724                 return 0;
1725         return pModule->module32;
1726 }
1727
1728 /***************************************************************************
1729  *              MapHInstLS                      (KERNEL32.@)
1730  *              MapHInstLS                      (KERNEL.472)
1731  */
1732 void WINAPI MapHInstLS( CONTEXT86 *context )
1733 {
1734     context->Eax = MapHModuleLS(context->Eax);
1735 }
1736
1737 /***************************************************************************
1738  *              MapHInstSL                      (KERNEL32.@)
1739  *              MapHInstSL                      (KERNEL.473)
1740  */
1741 void WINAPI MapHInstSL( CONTEXT86 *context )
1742 {
1743     context->Eax = MapHModuleSL(context->Eax);
1744 }
1745
1746 /***************************************************************************
1747  *              MapHInstLS_PN                   (KERNEL32.@)
1748  */
1749 void WINAPI MapHInstLS_PN( CONTEXT86 *context )
1750 {
1751     if (context->Eax) context->Eax = MapHModuleLS(context->Eax);
1752 }
1753
1754 /***************************************************************************
1755  *              MapHInstSL_PN                   (KERNEL32.@)
1756  */
1757 void WINAPI MapHInstSL_PN( CONTEXT86 *context )
1758 {
1759     if (context->Eax) context->Eax = MapHModuleSL(context->Eax);
1760 }
1761