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/winbase16.h"
  14 #include "winerror.h"
  15 #include "module.h"
  16 #include "neexe.h"
  17 #include "peexe.h"
  18 #include "toolhelp.h"
  19 #include "file.h"
  20 #include "ldt.h"
  21 #include "callback.h"
  22 #include "heap.h"
  23 #include "task.h"
  24 #include "global.h"
  25 #include "process.h"
  26 #include "snoop.h"
  27 #include "syslevel.h"
  28 #include "builtin16.h"
  29 #include "stackframe.h"
  30 #include "debugtools.h"
  31 #include "loadorder.h"
  32 #include "elfdll.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(module)
  35
  36 #define hFirstModule (pThhook->hExeHead)
  37
  38 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  39
  40 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  41 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  42
  43 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
  44
  45 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
  46
  47 /***********************************************************************
  48  *           NE_GetPtr
  49  */
  50 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
  51 {
  52     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
  53 }
  54
  55
  56 /***********************************************************************
  57  *           NE_DumpModule
  58  */
  59 void NE_DumpModule( HMODULE16 hModule )
  60 {
  61     int i, ordinal;
  62     SEGTABLEENTRY *pSeg;
  63     BYTE *pstr;
  64     WORD *pword;
  65     NE_MODULE *pModule;
  66     ET_BUNDLE *bundle;
  67     ET_ENTRY *entry;
  68
  69     if (!(pModule = NE_GetPtr( hModule )))
  70     {
  71         MESSAGE( "**** %04x is not a module handle\n", hModule );
  72         return;
  73     }
  74
  75       /* Dump the module info */
  76     DPRINTF( "---\n" );
  77     DPRINTF( "Module %04x:\n", hModule );
  78     DPRINTF( "count=%d flags=%04x heap=%d stack=%d\n",
  79           pModule->count, pModule->flags,
  80           pModule->heap_size, pModule->stack_size );
  81     DPRINTF( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
  82           pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
  83           pModule->seg_count, pModule->modref_count );
  84     DPRINTF( "os_flags=%d swap_area=%d version=%04x\n",
  85           pModule->os_flags, pModule->min_swap_area,
  86           pModule->expected_version );
  87     if (pModule->flags & NE_FFLAGS_WIN32)
  88         DPRINTF( "PE module=%08x\n", pModule->module32 );
  89
  90       /* Dump the file info */
  91     DPRINTF( "---\n" );
  92     DPRINTF( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
  93
  94       /* Dump the segment table */
  95     DPRINTF( "---\n" );
  96     DPRINTF( "Segment table:\n" );
  97     pSeg = NE_SEG_TABLE( pModule );
  98     for (i = 0; i < pModule->seg_count; i++, pSeg++)
  99         DPRINTF( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 100               i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 101               pSeg->minsize, pSeg->hSeg );
 102
 103       /* Dump the resource table */
 104     DPRINTF( "---\n" );
 105     DPRINTF( "Resource table:\n" );
 106     if (pModule->res_table)
 107     {
 108         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
 109         DPRINTF( "Alignment: %d\n", *pword++ );
 110         while (*pword)
 111         {
 112             struct resource_typeinfo_s *ptr = (struct resource_typeinfo_s *)pword;
 113             struct resource_nameinfo_s *pname = (struct resource_nameinfo_s *)(ptr + 1);
 114             DPRINTF( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 115             for (i = 0; i < ptr->count; i++, pname++)
 116                 DPRINTF( "offset=%d len=%d id=%04x\n",
 117                       pname->offset, pname->length, pname->id );
 118             pword = (WORD *)pname;
 119         }
 120     }
 121     else DPRINTF( "None\n" );
 122
 123       /* Dump the resident name table */
 124     DPRINTF( "---\n" );
 125     DPRINTF( "Resident-name table:\n" );
 126     pstr = (char *)pModule + pModule->name_table;
 127     while (*pstr)
 128     {
 129         DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 130               *(WORD *)(pstr + *pstr + 1) );
 131         pstr += *pstr + 1 + sizeof(WORD);
 132     }
 133
 134       /* Dump the module reference table */
 135     DPRINTF( "---\n" );
 136     DPRINTF( "Module ref table:\n" );
 137     if (pModule->modref_table)
 138     {
 139         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 140         for (i = 0; i < pModule->modref_count; i++, pword++)
 141         {
 142             char name[10];
 143             GetModuleName16( *pword, name, sizeof(name) );
 144             DPRINTF( "%d: %04x -> '%s'\n", i, *pword, name );
 145         }
 146     }
 147     else DPRINTF( "None\n" );
 148
 149       /* Dump the entry table */
 150     DPRINTF( "---\n" );
 151     DPRINTF( "Entry table:\n" );
 152     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->entry_table);
 153     do {
 154         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 155         DPRINTF( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 156         ordinal = bundle->first;
 157         while (ordinal < bundle->last)
 158         {
 159             if (entry->type == 0xff)
 160                 DPRINTF("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 161             else
 162                 DPRINTF("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 163             entry++;
 164     }
 165     } while ( (bundle->next)
 166            && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 167
 168     /* Dump the non-resident names table */
 169     DPRINTF( "---\n" );
 170     DPRINTF( "Non-resident names table:\n" );
 171     if (pModule->nrname_handle)
 172     {
 173         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 174         while (*pstr)
 175         {
 176             DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 177                    *(WORD *)(pstr + *pstr + 1) );
 178             pstr += *pstr + 1 + sizeof(WORD);
 179         }
 180     }
 181     DPRINTF( "\n" );
 182 }
 183
 184
 185 /***********************************************************************
 186  *           NE_WalkModules
 187  *
 188  * Walk the module list and print the modules.
 189  */
 190 void NE_WalkModules(void)
 191 {
 192     HMODULE16 hModule = hFirstModule;
 193     MESSAGE( "Module Flags Name\n" );
 194     while (hModule)
 195     {
 196         NE_MODULE *pModule = NE_GetPtr( hModule );
 197         if (!pModule)
 198         {
 199             MESSAGE( "Bad module %04x in list\n", hModule );
 200             return;
 201         }
 202         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 203                  *((char *)pModule + pModule->name_table),
 204                  (char *)pModule + pModule->name_table + 1 );
 205         hModule = pModule->next;
 206     }
 207 }
 208
 209
 210 /**********************************************************************
 211  *           NE_RegisterModule
 212  */
 213 void NE_RegisterModule( NE_MODULE *pModule )
 214 {
 215     pModule->next = hFirstModule;
 216     hFirstModule = pModule->self;
 217 }
 218
 219
 220 /***********************************************************************
 221  *           NE_GetOrdinal
 222  *
 223  * Lookup the ordinal for a given name.
 224  */
 225 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 226 {
 227     unsigned char buffer[256], *cpnt;
 228     BYTE len;
 229     NE_MODULE *pModule;
 230
 231     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 232     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 233
 234     TRACE("(%04x,'%s')\n", hModule, name );
 235
 236       /* First handle names of the form '#xxxx' */
 237
 238     if (name[0] == '#') return atoi( name + 1 );
 239
 240       /* Now copy and uppercase the string */
 241
 242     strcpy( buffer, name );
 243     CharUpperA( buffer );
 244     len = strlen( buffer );
 245
 246       /* First search the resident names */
 247
 248     cpnt = (char *)pModule + pModule->name_table;
 249
 250       /* Skip the first entry (module name) */
 251     cpnt += *cpnt + 1 + sizeof(WORD);
 252     while (*cpnt)
 253     {
 254         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 255         {
 256             TRACE("  Found: ordinal=%d\n",
 257                             *(WORD *)(cpnt + *cpnt + 1) );
 258             return *(WORD *)(cpnt + *cpnt + 1);
 259         }
 260         cpnt += *cpnt + 1 + sizeof(WORD);
 261     }
 262
 263       /* Now search the non-resident names table */
 264
 265     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 266     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 267
 268       /* Skip the first entry (module description string) */
 269     cpnt += *cpnt + 1 + sizeof(WORD);
 270     while (*cpnt)
 271     {
 272         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 273         {
 274             TRACE("  Found: ordinal=%d\n",
 275                             *(WORD *)(cpnt + *cpnt + 1) );
 276             return *(WORD *)(cpnt + *cpnt + 1);
 277         }
 278         cpnt += *cpnt + 1 + sizeof(WORD);
 279     }
 280     return 0;
 281 }
 282
 283
 284 /***********************************************************************
 285  *           NE_GetEntryPoint   (WPROCS.27)
 286  *
 287  * Return the entry point for a given ordinal.
 288  */
 289 FARPROC16 WINAPI WIN16_NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 290 {
 291     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 292     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 293     return ret;
 294 }
 295 FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 296 {
 297     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 298 }
 299 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 300 {
 301     NE_MODULE *pModule;
 302     WORD sel, offset, i;
 303
 304     ET_ENTRY *entry;
 305     ET_BUNDLE *bundle;
 306
 307     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 308     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 309
 310     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 311     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 312     {
 313         if (!(bundle->next))
 314             return 0;
 315         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 316     }
 317
 318     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 319     for (i=0; i < (ordinal - bundle->first - 1); i++)
 320         entry++;
 321
 322     sel = entry->segnum;
 323     offset = entry->offs;
 324
 325     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 326     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 327     if (sel==0xffff)
 328         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 329     if (!snoop)
 330         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 331     else
 332         return (FARPROC16)SNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset ));
 333 }
 334
 335
 336 /***********************************************************************
 337  *           NE_SetEntryPoint
 338  *
 339  * Change the value of an entry point. Use with caution!
 340  * It can only change the offset value, not the selector.
 341  */
 342 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 343 {
 344     NE_MODULE *pModule;
 345     ET_ENTRY *entry;
 346     ET_BUNDLE *bundle;
 347     int i;
 348
 349     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 350     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 351
 352     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 353     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 354         {
 355         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 356         if (!(bundle->next))
 357             return 0;
 358     }
 359
 360     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 361     for (i=0; i < (ordinal - bundle->first - 1); i++)
 362         entry++;
 363
 364     entry->offs = offset;
 365     return TRUE;
 366 }
 367
 368
 369 /***********************************************************************
 370  *           NE_OpenFile
 371  */
 372 HANDLE NE_OpenFile( NE_MODULE *pModule )
 373 {
 374     char *name;
 375
 376     static HANDLE cachedfd = -1;
 377
 378     TRACE("(%p) cache: mod=%p fd=%d\n",
 379            pModule, pCachedModule, cachedfd );
 380     if (pCachedModule == pModule) return cachedfd;
 381     CloseHandle( cachedfd );
 382     pCachedModule = pModule;
 383     name = NE_MODULE_NAME( pModule );
 384     if ((cachedfd = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 385                                    NULL, OPEN_EXISTING, 0, -1 )) == -1)
 386         MESSAGE( "Can't open file '%s' for module %04x\n", name, pModule->self );
 387     else
 388         /* FIXME: should not be necessary */
 389         cachedfd = ConvertToGlobalHandle(cachedfd);
 390     TRACE("opened '%s' -> %d\n",
 391                     name, cachedfd );
 392     return cachedfd;
 393 }
 394
 395
 396 /***********************************************************************
 397  *           NE_LoadExeHeader
 398  */
 399 static HMODULE16 NE_LoadExeHeader( LPCSTR filename )
 400 {
 401     IMAGE_DOS_HEADER mz_header;
 402     IMAGE_OS2_HEADER ne_header;
 403     int size;
 404     HMODULE16 hModule;
 405     NE_MODULE *pModule;
 406     BYTE *pData, *pTempEntryTable;
 407     char *buffer, *fastload = NULL;
 408     int fastload_offset = 0, fastload_length = 0;
 409     ET_ENTRY *entry;
 410     ET_BUNDLE *bundle, *oldbundle;
 411     HFILE16 hFile;
 412     OFSTRUCT ofs;
 413
 414     /* Open file */
 415     if ((hFile = OpenFile16( filename, &ofs, OF_READ )) == HFILE_ERROR16)
 416         return (HMODULE16)2;  /* File not found */
 417
 418   /* Read a block from either the file or the fast-load area. */
 419 #define READ(offset,size,buffer) \
 420        ((fastload && ((offset) >= fastload_offset) && \
 421          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 422         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 423         (_llseek16( hFile, (offset), SEEK_SET), \
 424          _hread16( hFile, (buffer), (size) ) == (size)))
 425
 426     _llseek16( hFile, 0, SEEK_SET );
 427     if ((_hread16(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
 428         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 429     {
 430         _lclose16( hFile );
 431         return (HMODULE16)11;  /* invalid exe */
 432     }
 433
 434     _llseek16( hFile, mz_header.e_lfanew, SEEK_SET );
 435     if (_hread16( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
 436     {
 437         _lclose16( hFile );
 438         return (HMODULE16)11;  /* invalid exe */
 439     }
 440
 441     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 442     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 443
 444     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 445       MESSAGE("Sorry, this is an OS/2 linear executable (LX) file !\n");
 446       _lclose16( hFile );
 447       return (HMODULE16)12;
 448     }
 449
 450     /* We now have a valid NE header */
 451
 452     size = sizeof(NE_MODULE) +
 453              /* segment table */
 454            ne_header.n_segment_tab * sizeof(SEGTABLEENTRY) +
 455              /* resource table */
 456            ne_header.rname_tab_offset - ne_header.resource_tab_offset +
 457              /* resident names table */
 458            ne_header.moduleref_tab_offset - ne_header.rname_tab_offset +
 459              /* module ref table */
 460            ne_header.n_mod_ref_tab * sizeof(WORD) +
 461              /* imported names table */
 462            ne_header.entry_tab_offset - ne_header.iname_tab_offset +
 463              /* entry table length */
 464            ne_header.entry_tab_length +
 465              /* entry table extra conversion space */
 466            sizeof(ET_BUNDLE) +
 467            2 * (ne_header.entry_tab_length - ne_header.n_mov_entry_points*6) +
 468              /* loaded file info */
 469            sizeof(OFSTRUCT)-sizeof(ofs.szPathName)+strlen(ofs.szPathName)+1;
 470
 471     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 472     if (!hModule)
 473     {
 474         _lclose16( hFile );
 475         return (HMODULE16)11;  /* invalid exe */
 476     }
 477
 478     FarSetOwner16( hModule, hModule );
 479     pModule = (NE_MODULE *)GlobalLock16( hModule );
 480     memcpy( pModule, &ne_header, sizeof(ne_header) );
 481     pModule->count = 0;
 482     /* check *programs* for default minimal stack size */
 483     if ( (!(pModule->flags & NE_FFLAGS_LIBMODULE))
 484                 && (pModule->stack_size < 0x1400) )
 485                 pModule->stack_size = 0x1400;
 486     pModule->module32 = 0;
 487     pModule->self = hModule;
 488     pModule->self_loading_sel = 0;
 489     pData = (BYTE *)(pModule + 1);
 490
 491     /* Clear internal Wine flags in case they are set in the EXE file */
 492
 493     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 494
 495     /* Read the fast-load area */
 496
 497     if (ne_header.additional_flags & NE_AFLAGS_FASTLOAD)
 498     {
 499         fastload_offset=ne_header.fastload_offset<<ne_header.align_shift_count;
 500         fastload_length=ne_header.fastload_length<<ne_header.align_shift_count;
 501         TRACE("Using fast-load area offset=%x len=%d\n",
 502                         fastload_offset, fastload_length );
 503         if ((fastload = HeapAlloc( GetProcessHeap(), 0, fastload_length )) != NULL)
 504         {
 505             _llseek16( hFile, fastload_offset, SEEK_SET);
 506             if (_hread16(hFile, fastload, fastload_length) != fastload_length)
 507             {
 508                 HeapFree( GetProcessHeap(), 0, fastload );
 509                 WARN("Error reading fast-load area!\n");
 510                 fastload = NULL;
 511             }
 512         }
 513     }
 514
 515     /* Get the segment table */
 516
 517     pModule->seg_table = (int)pData - (int)pModule;
 518     buffer = HeapAlloc( GetProcessHeap(), 0, ne_header.n_segment_tab *
 519                                       sizeof(struct ne_segment_table_entry_s));
 520     if (buffer)
 521     {
 522         int i;
 523         struct ne_segment_table_entry_s *pSeg;
 524
 525         if (!READ( mz_header.e_lfanew + ne_header.segment_tab_offset,
 526              ne_header.n_segment_tab * sizeof(struct ne_segment_table_entry_s),
 527              buffer ))
 528         {
 529             HeapFree( GetProcessHeap(), 0, buffer );
 530             if (fastload)
 531                 HeapFree( GetProcessHeap(), 0, fastload );
 532             GlobalFree16( hModule );
 533             _lclose16( hFile );
 534             return (HMODULE16)11;  /* invalid exe */
 535         }
 536         pSeg = (struct ne_segment_table_entry_s *)buffer;
 537         for (i = ne_header.n_segment_tab; i > 0; i--, pSeg++)
 538         {
 539             memcpy( pData, pSeg, sizeof(*pSeg) );
 540             pData += sizeof(SEGTABLEENTRY);
 541         }
 542         HeapFree( GetProcessHeap(), 0, buffer );
 543     }
 544     else
 545     {
 546         if (fastload)
 547             HeapFree( GetProcessHeap(), 0, fastload );
 548         GlobalFree16( hModule );
 549         _lclose16( hFile );
 550         return (HMODULE16)11;  /* invalid exe */
 551     }
 552
 553     /* Get the resource table */
 554
 555     if (ne_header.resource_tab_offset < ne_header.rname_tab_offset)
 556     {
 557         pModule->res_table = (int)pData - (int)pModule;
 558         if (!READ(mz_header.e_lfanew + ne_header.resource_tab_offset,
 559                   ne_header.rname_tab_offset - ne_header.resource_tab_offset,
 560                   pData ))
 561         {
 562             _lclose16( hFile );
 563             return (HMODULE16)11;  /* invalid exe */
 564         }
 565         pData += ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 566         NE_InitResourceHandler( hModule );
 567     }
 568     else pModule->res_table = 0;  /* No resource table */
 569
 570     /* Get the resident names table */
 571
 572     pModule->name_table = (int)pData - (int)pModule;
 573     if (!READ( mz_header.e_lfanew + ne_header.rname_tab_offset,
 574                ne_header.moduleref_tab_offset - ne_header.rname_tab_offset,
 575                pData ))
 576     {
 577         if (fastload)
 578             HeapFree( GetProcessHeap(), 0, fastload );
 579         GlobalFree16( hModule );
 580         _lclose16( hFile );
 581         return (HMODULE16)11;  /* invalid exe */
 582     }
 583     pData += ne_header.moduleref_tab_offset - ne_header.rname_tab_offset;
 584
 585     /* Get the module references table */
 586
 587     if (ne_header.n_mod_ref_tab > 0)
 588     {
 589         pModule->modref_table = (int)pData - (int)pModule;
 590         if (!READ( mz_header.e_lfanew + ne_header.moduleref_tab_offset,
 591                   ne_header.n_mod_ref_tab * sizeof(WORD),
 592                   pData ))
 593         {
 594             if (fastload)
 595                 HeapFree( GetProcessHeap(), 0, fastload );
 596             GlobalFree16( hModule );
 597             _lclose16( hFile );
 598             return (HMODULE16)11;  /* invalid exe */
 599         }
 600         pData += ne_header.n_mod_ref_tab * sizeof(WORD);
 601     }
 602     else pModule->modref_table = 0;  /* No module references */
 603
 604     /* Get the imported names table */
 605
 606     pModule->import_table = (int)pData - (int)pModule;
 607     if (!READ( mz_header.e_lfanew + ne_header.iname_tab_offset,
 608                ne_header.entry_tab_offset - ne_header.iname_tab_offset,
 609                pData ))
 610     {
 611         if (fastload)
 612             HeapFree( GetProcessHeap(), 0, fastload );
 613         GlobalFree16( hModule );
 614         _lclose16( hFile );
 615         return (HMODULE16)11;  /* invalid exe */
 616     }
 617     pData += ne_header.entry_tab_offset - ne_header.iname_tab_offset;
 618
 619     /* Load entry table, convert it to the optimized version used by Windows */
 620
 621     if ((pTempEntryTable = HeapAlloc( GetProcessHeap(), 0, ne_header.entry_tab_length)) != NULL)
 622     {
 623         BYTE nr_entries, type, *s;
 624
 625         TRACE("Converting entry table.\n");
 626     pModule->entry_table = (int)pData - (int)pModule;
 627     if (!READ( mz_header.e_lfanew + ne_header.entry_tab_offset,
 628                 ne_header.entry_tab_length, pTempEntryTable ))
 629     {
 630             HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 631             if (fastload)
 632                 HeapFree( GetProcessHeap(), 0, fastload );
 633         GlobalFree16( hModule );
 634         _lclose16( hFile );
 635         return (HMODULE16)11;  /* invalid exe */
 636     }
 637
 638         s = pTempEntryTable;
 639         TRACE("entry table: offs %04x, len %04x, entries %d\n", ne_header.entry_tab_offset, ne_header.entry_tab_length, *s);
 640
 641         bundle = (ET_BUNDLE *)pData;
 642         TRACE("first bundle: %p\n", bundle);
 643         memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 644         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 645
 646         while ((nr_entries = *s++))
 647         {
 648             if ((type = *s++))
 649             {
 650                 bundle->last += nr_entries;
 651                 if (type == 0xff)
 652                 while (nr_entries--)
 653                 {
 654                     entry->type   = type;
 655                     entry->flags  = *s++;
 656                     s += 2;
 657                     entry->segnum = *s++;
 658                     entry->offs   = *(WORD *)s; s += 2;
 659                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 660                     entry++;
 661                 }
 662                 else
 663                 while (nr_entries--)
 664                 {
 665                     entry->type   = type;
 666                     entry->flags  = *s++;
 667                     entry->segnum = type;
 668                     entry->offs   = *(WORD *)s; s += 2;
 669                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 670                     entry++;
 671                 }
 672             }
 673             else
 674             {
 675                 if (bundle->first == bundle->last)
 676                 {
 677                     bundle->first += nr_entries;
 678                     bundle->last += nr_entries;
 679                 }
 680                 else
 681                 {
 682                     oldbundle = bundle;
 683                     oldbundle->next = ((int)entry - (int)pModule);
 684                     bundle = (ET_BUNDLE *)entry;
 685                     TRACE("new bundle: %p\n", bundle);
 686                     bundle->first = bundle->last =
 687                         oldbundle->last + nr_entries;
 688                     bundle->next = 0;
 689                     (BYTE *)entry += sizeof(ET_BUNDLE);
 690                 }
 691             }
 692         }
 693         HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 694     }
 695     else
 696     {
 697         if (fastload)
 698             HeapFree( GetProcessHeap(), 0, fastload );
 699         GlobalFree16( hModule );
 700         _lclose16( hFile );
 701         return (HMODULE16)11;  /* invalid exe */
 702     }
 703
 704     pData += ne_header.entry_tab_length + sizeof(ET_BUNDLE) +
 705              2 * (ne_header.entry_tab_length - ne_header.n_mov_entry_points*6);
 706
 707     if ((DWORD)entry > (DWORD)pData)
 708        ERR("converted entry table bigger than reserved space !!!\nentry: %p, pData: %p. Please report !\n", entry, pData);
 709
 710     /* Store the filename information */
 711
 712     pModule->fileinfo = (int)pData - (int)pModule;
 713     size = sizeof(OFSTRUCT)-sizeof(ofs.szPathName)+strlen(ofs.szPathName)+1;
 714     ofs.cBytes = size - 1;
 715     memcpy( pData, &ofs, size );
 716     pData += size;
 717
 718     /* Free the fast-load area */
 719
 720 #undef READ
 721     if (fastload)
 722         HeapFree( GetProcessHeap(), 0, fastload );
 723
 724     /* Get the non-resident names table */
 725
 726     if (ne_header.nrname_tab_length)
 727     {
 728         pModule->nrname_handle = GLOBAL_Alloc( 0, ne_header.nrname_tab_length,
 729                                                hModule, FALSE, FALSE, FALSE );
 730         if (!pModule->nrname_handle)
 731         {
 732             GlobalFree16( hModule );
 733             _lclose16( hFile );
 734             return (HMODULE16)11;  /* invalid exe */
 735         }
 736         buffer = GlobalLock16( pModule->nrname_handle );
 737         _llseek16( hFile, ne_header.nrname_tab_offset, SEEK_SET );
 738         if (_hread16( hFile, buffer, ne_header.nrname_tab_length )
 739               != ne_header.nrname_tab_length)
 740         {
 741             GlobalFree16( pModule->nrname_handle );
 742             GlobalFree16( hModule );
 743             _lclose16( hFile );
 744             return (HMODULE16)11;  /* invalid exe */
 745         }
 746     }
 747     else pModule->nrname_handle = 0;
 748
 749     /* Allocate a segment for the implicitly-loaded DLLs */
 750
 751     if (pModule->modref_count)
 752     {
 753         pModule->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,
 754                                     (pModule->modref_count+1)*sizeof(HMODULE16),
 755                                     hModule, FALSE, FALSE, FALSE );
 756         if (!pModule->dlls_to_init)
 757         {
 758             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 759             GlobalFree16( hModule );
 760             _lclose16( hFile );
 761             return (HMODULE16)11;  /* invalid exe */
 762         }
 763     }
 764     else pModule->dlls_to_init = 0;
 765
 766     NE_RegisterModule( pModule );
 767     SNOOP16_RegisterDLL(pModule,ofs.szPathName);
 768
 769     _lclose16( hFile );
 770     return hModule;
 771 }
 772
 773
 774 /***********************************************************************
 775  *           NE_LoadDLLs
 776  *
 777  * Load all DLLs implicitly linked to a module.
 778  */
 779 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 780 {
 781     int i;
 782     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 783     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 784
 785     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 786     {
 787         char buffer[260], *p;
 788         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 789         memcpy( buffer, pstr + 1, *pstr );
 790         *(buffer + *pstr) = 0; /* terminate it */
 791
 792         TRACE("Loading '%s'\n", buffer );
 793         if (!(*pModRef = GetModuleHandle16( buffer )))
 794         {
 795             /* If the DLL is not loaded yet, load it and store */
 796             /* its handle in the list of DLLs to initialize.   */
 797             HMODULE16 hDLL;
 798
 799             /* Append .DLL to name if no extension present */
 800             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 801                     strcat( buffer, ".DLL" );
 802
 803             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 804             {
 805                 /* FIXME: cleanup what was done */
 806
 807                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 808                      buffer, *((BYTE*)pModule + pModule->name_table),
 809                      (char *)pModule + pModule->name_table + 1, hDLL );
 810                 return FALSE;
 811             }
 812             *pModRef = GetExePtr( hDLL );
 813             *pDLLs++ = *pModRef;
 814         }
 815         else  /* Increment the reference count of the DLL */
 816         {
 817             NE_MODULE *pOldDLL;
 818
 819             pOldDLL = NE_GetPtr( *pModRef );
 820             if (pOldDLL) pOldDLL->count++;
 821         }
 822     }
 823     return TRUE;
 824 }
 825
 826
 827 /**********************************************************************
 828  *          NE_DoLoadModule
 829  *
 830  * Load first instance of NE module from file.
 831  *
 832  * pModule must point to a module structure prepared by NE_LoadExeHeader.
 833  * This routine must never be called twice on a module.
 834  *
 835  */
 836 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
 837 {
 838     /* Allocate the segments for this module */
 839
 840     if (!NE_CreateAllSegments( pModule ))
 841         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
 842
 843     /* Load the referenced DLLs */
 844
 845     if (!NE_LoadDLLs( pModule ))
 846         return ERROR_FILE_NOT_FOUND; /* 2 */
 847
 848     /* Load the segments */
 849
 850     NE_LoadAllSegments( pModule );
 851
 852     /* Make sure the usage count is 1 on the first loading of  */
 853     /* the module, even if it contains circular DLL references */
 854
 855     pModule->count = 1;
 856
 857     return NE_GetInstance( pModule );
 858 }
 859
 860 /**********************************************************************
 861  *          NE_LoadModule
 862  *
 863  * Load first instance of NE module. (Note: caller is responsible for
 864  * ensuring the module isn't already loaded!)
 865  *
 866  * If the module turns out to be an executable module, only a
 867  * handle to a module stub is returned; this needs to be initialized
 868  * by calling NE_DoLoadModule later, in the context of the newly
 869  * created process.
 870  *
 871  * If lib_only is TRUE, however, the module is perforce treated
 872  * like a DLL module, even if it is an executable module.
 873  *
 874  */
 875 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
 876 {
 877     NE_MODULE *pModule;
 878     HMODULE16 hModule;
 879     HINSTANCE16 hInstance;
 880
 881     hModule = NE_LoadExeHeader( name );
 882     if (hModule < 32) return hModule;
 883
 884     pModule = NE_GetPtr( hModule );
 885     if ( !pModule ) return hModule;
 886
 887     if ( !lib_only && !( pModule->flags & NE_FFLAGS_LIBMODULE ) )
 888         return hModule;
 889
 890     hInstance = NE_DoLoadModule( pModule );
 891     if ( hInstance < 32 )
 892     {
 893         /* cleanup ... */
 894         NE_FreeModule( hModule, 0 );
 895     }
 896
 897     return hInstance;
 898 }
 899
 900
 901 /**********************************************************************
 902  *          MODULE_LoadModule16
 903  *
 904  * Load a NE module in the order of the loadorder specification.
 905  * The caller is responsible that the module is not loaded already.
 906  *
 907  */
 908 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
 909 {
 910         HINSTANCE16 hinst;
 911         int i;
 912         module_loadorder_t *plo;
 913
 914         plo = MODULE_GetLoadOrder(libname);
 915
 916         for(i = 0; i < MODULE_LOADORDER_NTYPES; i++)
 917         {
 918                 switch(plo->loadorder[i])
 919                 {
 920                 case MODULE_LOADORDER_DLL:
 921                         TRACE("Trying native dll '%s'\n", libname);
 922                         hinst = NE_LoadModule(libname, lib_only);
 923                         break;
 924
 925                 case MODULE_LOADORDER_ELFDLL:
 926                         TRACE("Trying elfdll '%s'\n", libname);
 927                         hinst = ELFDLL_LoadModule16(libname);
 928                         break;
 929
 930                 case MODULE_LOADORDER_BI:
 931                         TRACE("Trying built-in '%s'\n", libname);
 932                         hinst = BUILTIN_LoadModule(libname);
 933                         break;
 934
 935                 default:
 936                         ERR("Got invalid loadorder type %d (%s index %d)\n", plo->loadorder[i], plo->modulename, i);
 937                 /* Fall through */
 938
 939                 case MODULE_LOADORDER_SO:       /* This is not supported for NE modules */
 940                 case MODULE_LOADORDER_INVALID:  /* We ignore this as it is an empty entry */
 941                         hinst = 2;
 942                         break;
 943                 }
 944
 945                 if(hinst >= 32)
 946                 {
 947                         if(!implicit)
 948                         {
 949                                 HMODULE16 hModule;
 950                                 NE_MODULE *pModule;
 951
 952                                 hModule = GetModuleHandle16(libname);
 953                                 if(!hModule)
 954                                 {
 955                                         ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle\n",
 956                                                 libname, hinst);
 957                                         return 6;       /* ERROR_INVALID_HANDLE seems most appropriate */
 958                                 }
 959
 960                                 pModule = NE_GetPtr(hModule);
 961                                 if(!pModule)
 962                                 {
 963                                         ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
 964                                                 libname, hinst);
 965                                         return 6;       /* ERROR_INVALID_HANDLE seems most appropriate */
 966                                 }
 967
 968                                 TRACE("Loaded module '%s' at 0x%04x, \n", libname, hinst);
 969
 970                                 /*
 971                                  * Call initialization routines for all loaded DLLs. Note that
 972                                  * when we load implicitly linked DLLs this will be done by InitTask().
 973                                  */
 974                                 if(pModule->flags & NE_FFLAGS_LIBMODULE)
 975                                 {
 976                                         NE_InitializeDLLs(hModule);
 977                                         NE_DllProcessAttach(hModule);
 978                                 }
 979                         }
 980                         return hinst;
 981                 }
 982
 983                 if(hinst != 2)
 984                 {
 985                         /* We quit searching when we get another error than 'File not found' */
 986                         break;
 987                 }
 988         }
 989         return hinst;   /* The last error that occured */
 990 }
 991
 992
 993 /**********************************************************************
 994  *          LoadModule16    (KERNEL.45)
 995  */
 996 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
 997 {
 998     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
 999     LOADPARAMS16 *params;
1000     LPSTR cmd_line, new_cmd_line;
1001     LPCVOID env = NULL;
1002     STARTUPINFOA startup;
1003     PROCESS_INFORMATION info;
1004     HMODULE16 hModule;
1005     NE_MODULE *pModule;
1006     PDB *pdb;
1007
1008     /* Load module */
1009
1010     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1011     {
1012         /* Special case: second instance of an already loaded NE module */
1013
1014         if ( !( pModule = NE_GetPtr( hModule ) ) ) return (HINSTANCE16)11;
1015         if ( pModule->module32 ) return (HINSTANCE16)21;
1016
1017         /* Increment refcount */
1018
1019         pModule->count++;
1020     }
1021     else
1022     {
1023         /* Main case: load first instance of NE module */
1024
1025         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1026             return hModule;
1027
1028         if ( !(pModule = NE_GetPtr( hModule )) )
1029             return (HINSTANCE16)11;
1030     }
1031
1032     /* If library module, we just retrieve the instance handle */
1033
1034     if ( ( pModule->flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1035         return NE_GetInstance( pModule );
1036
1037     /*
1038      *  At this point, we need to create a new process.
1039      *
1040      *  pModule points either to an already loaded module, whose refcount
1041      *  has already been incremented (to avoid having the module vanish
1042      *  in the meantime), or else to a stub module which contains only header
1043      *  information.
1044      *
1045      *  All remaining initialization (really loading the module in the second
1046      *  case, and creating the new instance in both cases) are to be done in
1047      *  the context of the new process. This happens in the NE_InitProcess
1048      *  routine, which will be called from the 32-bit process initialization.
1049      */
1050
1051
1052     params = (LOADPARAMS16 *)paramBlock;
1053     cmd_line = (LPSTR)PTR_SEG_TO_LIN( params->cmdLine );
1054     if (!cmd_line) cmd_line = "";
1055     else if (*cmd_line) cmd_line++;  /* skip the length byte */
1056
1057     if (!(new_cmd_line = HeapAlloc( GetProcessHeap(), 0,
1058                                     strlen(cmd_line)+strlen(name)+2 )))
1059         return 0;
1060     strcpy( new_cmd_line, name );
1061     strcat( new_cmd_line, " " );
1062     strcat( new_cmd_line, cmd_line );
1063
1064     if (params->hEnvironment) env = GlobalLock16( params->hEnvironment );
1065
1066     memset( &info, '\0', sizeof(info) );
1067     memset( &startup, '\0', sizeof(startup) );
1068     startup.cb = sizeof(startup);
1069     if (params->showCmd)
1070     {
1071         startup.dwFlags = STARTF_USESHOWWINDOW;
1072         startup.wShowWindow = ((UINT16 *)PTR_SEG_TO_LIN(params->showCmd))[1];
1073     }
1074
1075     SYSLEVEL_ReleaseWin16Lock();
1076     pdb = PROCESS_Create( pModule, -1, new_cmd_line, env,
1077                           NULL, NULL, TRUE, 0, &startup, &info );
1078     SYSLEVEL_RestoreWin16Lock();
1079
1080     CloseHandle( info.hThread );
1081     CloseHandle( info.hProcess );
1082
1083     if (params->hEnvironment) GlobalUnlock16( params->hEnvironment );
1084     HeapFree( GetProcessHeap(), 0, new_cmd_line );
1085
1086     return GetProcessDword( info.dwProcessId, GPD_HINSTANCE16 );
1087 }
1088
1089 /**********************************************************************
1090  *          NE_CreateProcess
1091  */
1092 BOOL NE_CreateProcess( HANDLE hFile, LPCSTR filename, LPCSTR cmd_line, LPCSTR env,
1093                        LPSECURITY_ATTRIBUTES psa, LPSECURITY_ATTRIBUTES tsa,
1094                        BOOL inherit, DWORD flags, LPSTARTUPINFOA startup,
1095                        LPPROCESS_INFORMATION info )
1096 {
1097     HMODULE16 hModule;
1098     NE_MODULE *pModule;
1099
1100     SYSLEVEL_EnterWin16Lock();
1101
1102     /* Special case: second instance of an already loaded NE module
1103      * FIXME: maybe we should mark the module in a special way during
1104      * "second instance" loading stage ?
1105      * NE_CreateSegment and NE_LoadSegment might get confused without it,
1106      * especially when it comes to self-loaders */
1107
1108     if ( ( hModule = NE_GetModuleByFilename( filename ) ) != 0 )
1109     {
1110         if (   !( pModule = NE_GetPtr( hModule) )
1111             ||  ( pModule->flags & NE_FFLAGS_LIBMODULE )
1112             ||  pModule->module32 )
1113         {
1114             SetLastError( ERROR_BAD_FORMAT );
1115             goto error;
1116         }
1117
1118         pModule->count++;
1119     }
1120
1121     /* Main case: load first instance of NE module */
1122     else
1123     {
1124         /* Load module */
1125
1126         hModule = NE_LoadExeHeader( filename );
1127         if ( hModule < 32 )
1128         {
1129             SetLastError( hModule );
1130             goto error;
1131         }
1132
1133         if (   !( pModule = NE_GetPtr( hModule ) )
1134             ||  ( pModule->flags & NE_FFLAGS_LIBMODULE) )
1135         {
1136             GlobalFreeAll16( hModule );
1137             SetLastError( ERROR_BAD_FORMAT );
1138             goto error;
1139         }
1140     }
1141
1142     SYSLEVEL_LeaveWin16Lock();
1143
1144     if ( !PROCESS_Create( pModule, hFile, cmd_line, env,
1145                           psa, tsa, inherit, flags, startup, info ) )
1146         return FALSE;
1147
1148     return TRUE;
1149
1150  error:
1151     SYSLEVEL_LeaveWin16Lock();
1152     return FALSE;
1153 }
1154
1155 /**********************************************************************
1156  *          NE_InitProcess
1157  */
1158 BOOL NE_InitProcess( NE_MODULE *pModule  )
1159 {
1160     HINSTANCE16 hInstance, hPrevInstance;
1161     BOOL retv = TRUE;
1162
1163     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1164     WORD sp;
1165     TDB *pTask;
1166
1167     SYSLEVEL_EnterWin16Lock();
1168
1169     if ( pModule->count > 0 )
1170     {
1171         /* Second instance of an already loaded NE module */
1172         /* Note that the refcount was already incremented by the parent */
1173
1174         hPrevInstance = NE_GetInstance( pModule );
1175
1176         if ( pModule->dgroup )
1177             if ( NE_CreateSegment( pModule, pModule->dgroup ) )
1178                 NE_LoadSegment( pModule, pModule->dgroup );
1179
1180         hInstance = NE_GetInstance( pModule );
1181         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->dgroup, hPrevInstance);
1182
1183     }
1184     else
1185     {
1186         /* Load first instance of NE module */
1187
1188         pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1189
1190         hInstance = NE_DoLoadModule( pModule );
1191         hPrevInstance = 0;
1192     }
1193
1194     if ( hInstance < 32 )
1195     {
1196         SYSLEVEL_LeaveWin16Lock();
1197
1198         SetLastError( hInstance );
1199         return FALSE;
1200     }
1201
1202     /* Enter instance handles into task struct */
1203
1204     pTask = (TDB *)GlobalLock16( GetCurrentTask() );
1205     pTask->hInstance = hInstance;
1206     pTask->hPrevInstance = hPrevInstance;
1207
1208     /* Use DGROUP for 16-bit stack */
1209
1210     if (!(sp = pModule->sp))
1211         sp = pSegTable[pModule->ss-1].minsize + pModule->stack_size;
1212     sp &= ~1;  sp -= sizeof(STACK16FRAME);
1213     pTask->teb->cur_stack = PTR_SEG_OFF_TO_SEGPTR( hInstance, sp );
1214
1215     SYSLEVEL_LeaveWin16Lock();
1216
1217     return retv;
1218 }
1219
1220 /***********************************************************************
1221  *           LoadLibrary16   (KERNEL.95)
1222  */
1223 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1224 {
1225     return LoadModule16(libname, (LPVOID)-1 );
1226 }
1227
1228
1229 /**********************************************************************
1230  *          MODULE_CallWEP
1231  *
1232  * Call a DLL's WEP, allowing it to shut down.
1233  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1234  */
1235 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1236 {
1237     FARPROC16 WEP = (FARPROC16)0;
1238     WORD ordinal = NE_GetOrdinal( hModule, "WEP" );
1239
1240     if (ordinal) WEP = NE_GetEntryPoint( hModule, ordinal );
1241     if (!WEP)
1242     {
1243         WARN("module %04x doesn't have a WEP\n", hModule );
1244         return FALSE;
1245     }
1246     return Callbacks->CallWindowsExitProc( WEP, WEP_FREE_DLL );
1247 }
1248
1249
1250 /**********************************************************************
1251  *          NE_FreeModule
1252  *
1253  * Implementation of FreeModule16().
1254  */
1255 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1256 {
1257     HMODULE16 *hPrevModule;
1258     NE_MODULE *pModule;
1259     HMODULE16 *pModRef;
1260     int i;
1261
1262     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1263     hModule = pModule->self;
1264
1265     TRACE("%04x count %d\n", hModule, pModule->count );
1266
1267     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1268     else pModule->count = 0;
1269
1270     if (pModule->flags & NE_FFLAGS_BUILTIN)
1271         return FALSE;  /* Can't free built-in module */
1272
1273     if (call_wep && !(pModule->flags & NE_FFLAGS_WIN32))
1274     {
1275         if (pModule->flags & NE_FFLAGS_LIBMODULE)
1276         {
1277             MODULE_CallWEP( hModule );
1278
1279             /* Free the objects owned by the DLL module */
1280             TASK_CallTaskSignalProc( USIG16_DLL_UNLOAD, hModule );
1281             PROCESS_CallUserSignalProc( USIG_DLL_UNLOAD_WIN16, hModule );
1282         }
1283         else
1284             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1285     }
1286
1287
1288     /* Clear magic number just in case */
1289
1290     pModule->magic = pModule->self = 0;
1291
1292       /* Remove it from the linked list */
1293
1294     hPrevModule = &hFirstModule;
1295     while (*hPrevModule && (*hPrevModule != hModule))
1296     {
1297         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1298     }
1299     if (*hPrevModule) *hPrevModule = pModule->next;
1300
1301     /* Free the referenced modules */
1302
1303     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
1304     for (i = 0; i < pModule->modref_count; i++, pModRef++)
1305     {
1306         NE_FreeModule( *pModRef, call_wep );
1307     }
1308
1309     /* Free the module storage */
1310
1311     GlobalFreeAll16( hModule );
1312
1313     /* Remove module from cache */
1314
1315     if (pCachedModule == pModule) pCachedModule = NULL;
1316     return TRUE;
1317 }
1318
1319
1320 /**********************************************************************
1321  *          FreeModule16    (KERNEL.46)
1322  */
1323 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1324 {
1325     return NE_FreeModule( hModule, TRUE );
1326 }
1327
1328
1329 /***********************************************************************
1330  *           FreeLibrary16   (KERNEL.96)
1331  */
1332 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1333 {
1334     TRACE("%04x\n", handle );
1335     FreeModule16( handle );
1336 }
1337
1338
1339 /**********************************************************************
1340  *          GetModuleName    (KERNEL.27)
1341  */
1342 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1343 {
1344     NE_MODULE *pModule;
1345     BYTE *p;
1346
1347     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1348     p = (BYTE *)pModule + pModule->name_table;
1349     if (count > *p) count = *p + 1;
1350     if (count > 0)
1351     {
1352         memcpy( buf, p + 1, count - 1 );
1353         buf[count-1] = '\0';
1354     }
1355     return TRUE;
1356 }
1357
1358
1359 /**********************************************************************
1360  *          GetModuleUsage    (KERNEL.48)
1361  */
1362 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1363 {
1364     NE_MODULE *pModule = NE_GetPtr( hModule );
1365     return pModule ? pModule->count : 0;
1366 }
1367
1368
1369 /**********************************************************************
1370  *          GetExpWinVer    (KERNEL.167)
1371  */
1372 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1373 {
1374     NE_MODULE *pModule = NE_GetPtr( hModule );
1375     if ( !pModule ) return 0;
1376
1377     /*
1378      * For built-in modules, fake the expected version the module should
1379      * have according to the Windows version emulated by Wine
1380      */
1381     if ( !pModule->expected_version )
1382     {
1383         OSVERSIONINFOA versionInfo;
1384         versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1385
1386         if ( GetVersionExA( &versionInfo ) )
1387             pModule->expected_version =
1388                      (versionInfo.dwMajorVersion & 0xff) << 8
1389                    | (versionInfo.dwMinorVersion & 0xff);
1390     }
1391
1392     return pModule->expected_version;
1393 }
1394
1395
1396 /**********************************************************************
1397  *          GetModuleFileName16    (KERNEL.49)
1398  *
1399  * Comment: see GetModuleFileNameA
1400  *
1401  * Even if invoked by second instance of a program,
1402  * it still returns path of first one.
1403  */
1404 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1405                                   INT16 nSize )
1406 {
1407     NE_MODULE *pModule;
1408
1409     /* Win95 does not query hModule if set to 0 !
1410      * Is this wrong or maybe Win3.1 only ? */
1411     if (!hModule) hModule = GetCurrentTask();
1412
1413     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1414     if (pModule->expected_version >= 0x400)
1415         GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, nSize);
1416     else
1417         lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1418     TRACE("%s\n", lpFileName );
1419     return strlen(lpFileName);
1420 }
1421
1422
1423 /**********************************************************************
1424  *          GetModuleHandle    (KERNEL.47)
1425  *
1426  * Find a module from a module name.
1427  *
1428  * NOTE: The current implementation works the same way the Windows 95 one
1429  *       does. Do not try to 'fix' it, fix the callers.
1430  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1431  *       + It does not care about paths, just about basenames. (same as Windows)
1432  *
1433  * RETURNS
1434  *   LOWORD:
1435  *      the win16 module handle if found
1436  *      0 if not
1437  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1438  *      Always hFirstModule
1439  */
1440 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1441 {
1442     if (HIWORD(name) == 0)
1443         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1444     return MAKELONG(GetModuleHandle16( PTR_SEG_TO_LIN(name)), hFirstModule );
1445 }
1446
1447 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1448 {
1449     HMODULE16   hModule = hFirstModule;
1450     LPSTR       s;
1451     BYTE        len, *name_table;
1452     char        tmpstr[MAX_PATH];
1453     NE_MODULE *pModule;
1454
1455     TRACE("(%s)\n", name);
1456
1457     if (!HIWORD(name))
1458         return GetExePtr(LOWORD(name));
1459
1460     len = strlen(name);
1461     if (!len)
1462         return 0;
1463
1464     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1465
1466     /* If 'name' matches exactly the module name of a module:
1467      * Return its handle.
1468      */
1469     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1470     {
1471         pModule = NE_GetPtr( hModule );
1472         if (!pModule) break;
1473         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1474
1475         name_table = (BYTE *)pModule + pModule->name_table;
1476         if ((*name_table == len) && !strncmp(name, name_table+1, len))
1477             return hModule;
1478     }
1479
1480     /* If uppercased 'name' matches exactly the module name of a module:
1481      * Return its handle
1482      */
1483     for (s = tmpstr; *s; s++)
1484         *s = toupper(*s);
1485
1486     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1487     {
1488         pModule = NE_GetPtr( hModule );
1489         if (!pModule) break;
1490         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1491
1492         name_table = (BYTE *)pModule + pModule->name_table;
1493         /* FIXME: the lstrncmpiA is WRONG. It should not be case insensitive,
1494          * but case sensitive! (Unfortunately Winword 6 and subdlls have
1495          * lowercased module names, but try to load uppercase DLLs, so this
1496          * 'i' compare is just a quickfix until the loader handles that
1497          * correctly. -MM 990705
1498          */
1499         if ((*name_table == len) && !lstrncmpiA(tmpstr, name_table+1, len))
1500             return hModule;
1501     }
1502
1503     /* If the base filename of 'name' matches the base filename of the module
1504      * filename of some module (case-insensitive compare):
1505      * Return its handle.
1506      */
1507
1508     /* basename: search backwards in passed name to \ / or : */
1509     s = tmpstr + strlen(tmpstr);
1510     while (s > tmpstr)
1511     {
1512         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1513                 break;
1514         s--;
1515     }
1516
1517     /* search this in loaded filename list */
1518     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1519     {
1520         char            *loadedfn;
1521         OFSTRUCT        *ofs;
1522
1523         pModule = NE_GetPtr( hModule );
1524         if (!pModule) break;
1525         if (!pModule->fileinfo) continue;
1526         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1527
1528         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1529         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1530         /* basename: search backwards in pathname to \ / or : */
1531         while (loadedfn > (char*)ofs->szPathName)
1532         {
1533             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1534                     break;
1535             loadedfn--;
1536         }
1537         /* case insensitive compare ... */
1538         if (!lstrcmpiA(loadedfn, s))
1539             return hModule;
1540     }
1541
1542     /* If the extension of 'name' is '.EXE' and the base filename of 'name'
1543      * matches the base filename of the module filename of some 32-bit module:
1544      * Return the corresponding 16-bit dummy module handle.
1545      */
1546     if (len >= 4 && !strcasecmp(name+len-4, ".EXE"))
1547     {
1548         HMODULE hModule = GetModuleHandleA( name );
1549         if ( hModule )
1550             return MapHModuleLS( hModule );
1551     }
1552
1553     if (!strcmp(tmpstr,"MSDOS"))
1554         return 1;
1555
1556     if (!strcmp(tmpstr,"TIMER"))
1557     {
1558         FIXME("Eh... Should return caller's code segment, expect crash\n");
1559         return 0;
1560     }
1561
1562     return 0;
1563 }
1564
1565 /**********************************************************************
1566  *          NE_GetModuleByFilename
1567  */
1568 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1569 {
1570     HMODULE16   hModule;
1571     LPSTR       s, p;
1572     BYTE        len, *name_table;
1573     char        tmpstr[MAX_PATH];
1574     NE_MODULE *pModule;
1575
1576     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1577
1578     /* If the base filename of 'name' matches the base filename of the module
1579      * filename of some module (case-insensitive compare):
1580      * Return its handle.
1581      */
1582
1583     /* basename: search backwards in passed name to \ / or : */
1584     s = tmpstr + strlen(tmpstr);
1585     while (s > tmpstr)
1586     {
1587         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1588                 break;
1589         s--;
1590     }
1591
1592     /* search this in loaded filename list */
1593     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1594     {
1595         char            *loadedfn;
1596         OFSTRUCT        *ofs;
1597
1598         pModule = NE_GetPtr( hModule );
1599         if (!pModule) break;
1600         if (!pModule->fileinfo) continue;
1601         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1602
1603         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1604         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1605         /* basename: search backwards in pathname to \ / or : */
1606         while (loadedfn > (char*)ofs->szPathName)
1607         {
1608             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1609                     break;
1610             loadedfn--;
1611         }
1612         /* case insensitive compare ... */
1613         if (!lstrcmpiA(loadedfn, s))
1614             return hModule;
1615     }
1616
1617     /* If basename (without ext) matches the module name of a module:
1618      * Return its handle.
1619      */
1620
1621     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1622     len = strlen(s);
1623
1624     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1625     {
1626         pModule = NE_GetPtr( hModule );
1627         if (!pModule) break;
1628         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1629
1630         name_table = (BYTE *)pModule + pModule->name_table;
1631         if ((*name_table == len) && !lstrncmpiA(s, name_table+1, len))
1632             return hModule;
1633     }
1634
1635     return 0;
1636 }
1637
1638 /**********************************************************************
1639  *          ModuleFirst    (TOOLHELP.59)
1640  */
1641 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1642 {
1643     lpme->wNext = hFirstModule;
1644     return ModuleNext16( lpme );
1645 }
1646
1647
1648 /**********************************************************************
1649  *          ModuleNext    (TOOLHELP.60)
1650  */
1651 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1652 {
1653     NE_MODULE *pModule;
1654     char *name;
1655
1656     if (!lpme->wNext) return FALSE;
1657     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1658     name = (char *)pModule + pModule->name_table;
1659     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1660     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1661     lpme->hModule = lpme->wNext;
1662     lpme->wcUsage = pModule->count;
1663     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1664     lpme->wNext = pModule->next;
1665     return TRUE;
1666 }
1667
1668
1669 /**********************************************************************
1670  *          ModuleFindName    (TOOLHELP.61)
1671  */
1672 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1673 {
1674     lpme->wNext = GetModuleHandle16( name );
1675     return ModuleNext16( lpme );
1676 }
1677
1678
1679 /**********************************************************************
1680  *          ModuleFindHandle    (TOOLHELP.62)
1681  */
1682 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1683 {
1684     hModule = GetExePtr( hModule );
1685     lpme->wNext = hModule;
1686     return ModuleNext16( lpme );
1687 }
1688
1689
1690 /***************************************************************************
1691  *          IsRomModule16    (KERNEL.323)
1692  */
1693 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
1694 {
1695     return FALSE;
1696 }
1697
1698 /***************************************************************************
1699  *          IsRomFile16    (KERNEL.326)
1700  */
1701 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
1702 {
1703     return FALSE;
1704 }
1705
1706 /***************************************************************************
1707  *              MapHModuleLS                    (KERNEL32.520)
1708  */
1709 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod) {
1710         NE_MODULE       *pModule;
1711
1712         if (!hmod)
1713                 return ((TDB*)GlobalLock16(GetCurrentTask()))->hInstance;
1714         if (!HIWORD(hmod))
1715                 return hmod; /* we already have a 16 bit module handle */
1716         pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1717         while (pModule)  {
1718                 if (pModule->module32 == hmod)
1719                         return pModule->self;
1720                 pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1721         }
1722         return 0;
1723 }
1724
1725 /***************************************************************************
1726  *              MapHModuleSL                    (KERNEL32.521)
1727  */
1728 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod) {
1729         NE_MODULE       *pModule;
1730
1731         if (!hmod) {
1732                 TDB *pTask = (TDB*)GlobalLock16(GetCurrentTask());
1733
1734                 hmod = pTask->hModule;
1735         }
1736         pModule = (NE_MODULE*)GlobalLock16(hmod);
1737         if (    (pModule->magic!=IMAGE_OS2_SIGNATURE)   ||
1738                 !(pModule->flags & NE_FFLAGS_WIN32)
1739         )
1740                 return 0;
1741         return pModule->module32;
1742 }
1743
1744 /***************************************************************************
1745  *              MapHInstLS                      (KERNEL32.516)(KERNEL.472)
1746  */
1747 void WINAPI MapHInstLS( CONTEXT86 *context )
1748 {
1749         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1750 }
1751
1752 /***************************************************************************
1753  *              MapHInstSL                      (KERNEL32.518)(KERNEL.473)
1754  */
1755 void WINAPI MapHInstSL( CONTEXT86 *context )
1756 {
1757         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1758 }
1759
1760 /***************************************************************************
1761  *              MapHInstLS_PN                   (KERNEL32.517)
1762  */
1763 void WINAPI MapHInstLS_PN( CONTEXT86 *context )
1764 {
1765         if (EAX_reg(context))
1766             EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1767 }
1768
1769 /***************************************************************************
1770  *              MapHInstSL_PN                   (KERNEL32.519)
1771  */
1772 void WINAPI MapHInstSL_PN( CONTEXT86 *context )
1773 {
1774         if (EAX_reg(context))
1775             EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1776 }
1777