dlls/kernel/ne_module.c

   1 /*
   2  * NE modules
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #ifdef HAVE_UNISTD_H
  31 # include <unistd.h>
  32 #endif
  33 #include <ctype.h>
  34
  35 #include "windef.h"
  36 #include "wine/winbase16.h"
  37 #include "wownt32.h"
  38 #include "winternl.h"
  39 #include "toolhelp.h"
  40 #include "excpt.h"
  41 #include "kernel_private.h"
  42 #include "kernel16_private.h"
  43 #include "wine/exception.h"
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(module);
  47 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  48 WINE_DECLARE_DEBUG_CHANNEL(relay);
  49
  50 #include "pshpack1.h"
  51 typedef struct _GPHANDLERDEF
  52 {
  53     WORD selector;
  54     WORD rangeStart;
  55     WORD rangeEnd;
  56     WORD handler;
  57 } GPHANDLERDEF;
  58 #include "poppack.h"
  59
  60 /*
  61  * Segment table entry
  62  */
  63 struct ne_segment_table_entry_s
  64 {
  65     WORD seg_data_offset;   /* Sector offset of segment data    */
  66     WORD seg_data_length;   /* Length of segment data           */
  67     WORD seg_flags;         /* Flags associated with this segment       */
  68     WORD min_alloc;         /* Minimum allocation size for this */
  69 };
  70
  71 #define hFirstModule (pThhook->hExeHead)
  72
  73 struct builtin_dll
  74 {
  75     const IMAGE_DOS_HEADER *header;      /* module headers */
  76     const char             *file_name;   /* module file name */
  77 };
  78
  79 /* Table of all built-in DLLs */
  80
  81 #define MAX_DLLS 50
  82
  83 static struct builtin_dll builtin_dlls[MAX_DLLS];
  84
  85 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  86 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  87
  88 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
  89
  90 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
  91
  92
  93 /* patch all the flat cs references of the code segment if necessary */
  94 inline static void patch_code_segment( NE_MODULE *pModule )
  95 {
  96 #ifdef __i386__
  97     int i;
  98     CALLFROM16 *call;
  99     SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule );
 100
 101     for (i = 0; i < pModule->ne_cseg; i++, pSeg++)
 102         if (!(pSeg->flags & NE_SEGFLAGS_DATA)) break;  /* found the code segment */
 103
 104     call = GlobalLock16( pSeg->hSeg );
 105
 106     /* patch glue code address and code selector */
 107     for (i = 0; call[i].pushl == 0x68; i++)
 108     {
 109         if (call[i].ret[0] == 0xca66 || call[i].ret[0] == 0xcb66)  /* register entry point? */
 110             call[i].glue = __wine_call_from_16_regs;
 111         else
 112             call[i].glue = __wine_call_from_16;
 113         call[i].flatcs = wine_get_cs();
 114     }
 115
 116     if (TRACE_ON(relay))  /* patch relay functions to all point to relay_call_from_16 */
 117         for (i = 0; call[i].pushl == 0x68; i++) call[i].relay = relay_call_from_16;
 118 #endif
 119 }
 120
 121
 122 /***********************************************************************
 123  *              NE_strcasecmp
 124  *
 125  * locale-independent case conversion for module lookups
 126  */
 127 static int NE_strcasecmp( const char *str1, const char *str2 )
 128 {
 129     int ret = 0;
 130     for ( ; ; str1++, str2++)
 131         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 132     return ret;
 133 }
 134
 135
 136 /***********************************************************************
 137  *              NE_strncasecmp
 138  *
 139  * locale-independent case conversion for module lookups
 140  */
 141 static int NE_strncasecmp( const char *str1, const char *str2, int len )
 142 {
 143     int ret = 0;
 144     for ( ; len > 0; len--, str1++, str2++)
 145         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 146     return ret;
 147 }
 148
 149
 150 /***********************************************************************
 151  *           find_dll_descr
 152  *
 153  * Find a descriptor in the list
 154  */
 155 static const IMAGE_DOS_HEADER *find_dll_descr( const char *dllname, const char **file_name )
 156 {
 157     int i;
 158     const IMAGE_DOS_HEADER *mz_header;
 159     const IMAGE_OS2_HEADER *ne_header;
 160     BYTE *name_table;
 161
 162     for (i = 0; i < MAX_DLLS; i++)
 163     {
 164         mz_header = builtin_dlls[i].header;
 165         if (mz_header)
 166         {
 167             ne_header = (const IMAGE_OS2_HEADER *)((const char *)mz_header + mz_header->e_lfanew);
 168             name_table = (BYTE *)ne_header + ne_header->ne_restab;
 169
 170             /* check the dll file name */
 171             if (!NE_strcasecmp( builtin_dlls[i].file_name, dllname ) ||
 172             /* check the dll module name (without extension) */
 173                 (!NE_strncasecmp( dllname, (const char*)name_table+1, *name_table ) &&
 174                  !strcmp( dllname + *name_table, ".dll" )))
 175             {
 176                 *file_name = builtin_dlls[i].file_name;
 177                 return builtin_dlls[i].header;
 178             }
 179         }
 180     }
 181     return NULL;
 182 }
 183
 184
 185 /***********************************************************************
 186  *           __wine_dll_register_16 (KERNEL32.@)
 187  *
 188  * Register a built-in DLL descriptor.
 189  */
 190 void __wine_dll_register_16( const IMAGE_DOS_HEADER *header, const char *file_name )
 191 {
 192     int i;
 193
 194     for (i = 0; i < MAX_DLLS; i++)
 195     {
 196         if (builtin_dlls[i].header) continue;
 197         builtin_dlls[i].header = header;
 198         builtin_dlls[i].file_name = file_name;
 199         break;
 200     }
 201     assert( i < MAX_DLLS );
 202 }
 203
 204
 205 /***********************************************************************
 206  *           __wine_dll_unregister_16 (KERNEL32.@)
 207  *
 208  * Unregister a built-in DLL descriptor.
 209  */
 210 void __wine_dll_unregister_16( const IMAGE_DOS_HEADER *header )
 211 {
 212     int i;
 213
 214     for (i = 0; i < MAX_DLLS; i++)
 215     {
 216         if (builtin_dlls[i].header != header) continue;
 217         builtin_dlls[i].header = NULL;
 218         break;
 219     }
 220 }
 221
 222
 223 /***********************************************************************
 224  *           NE_GetPtr
 225  */
 226 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
 227 {
 228     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
 229 }
 230
 231
 232 /**********************************************************************
 233  *           NE_RegisterModule
 234  */
 235 static void NE_RegisterModule( NE_MODULE *pModule )
 236 {
 237     pModule->next = hFirstModule;
 238     hFirstModule = pModule->self;
 239 }
 240
 241
 242 /***********************************************************************
 243  *           NE_DumpModule
 244  */
 245 void NE_DumpModule( HMODULE16 hModule )
 246 {
 247     int i, ordinal;
 248     SEGTABLEENTRY *pSeg;
 249     BYTE *pstr;
 250     WORD *pword;
 251     NE_MODULE *pModule;
 252     ET_BUNDLE *bundle;
 253     ET_ENTRY *entry;
 254
 255     if (!(pModule = NE_GetPtr( hModule )))
 256     {
 257         ERR( "**** %04x is not a module handle\n", hModule );
 258         return;
 259     }
 260
 261       /* Dump the module info */
 262     TRACE( "---\n" );
 263     TRACE( "Module %04x:\n", hModule );
 264     TRACE( "count=%d flags=%04x heap=%d stack=%d\n",
 265              pModule->count, pModule->ne_flags,
 266              pModule->ne_heap, pModule->ne_stack );
 267     TRACE( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
 268              SELECTOROF(pModule->ne_csip), OFFSETOF(pModule->ne_csip),
 269              SELECTOROF(pModule->ne_sssp), OFFSETOF(pModule->ne_sssp),
 270              pModule->ne_autodata, pModule->ne_cseg, pModule->ne_cmod );
 271     TRACE( "os_flags=%d swap_area=%d version=%04x\n",
 272              pModule->ne_exetyp, pModule->ne_swaparea, pModule->ne_expver );
 273     if (pModule->ne_flags & NE_FFLAGS_WIN32)
 274         TRACE( "PE module=%p\n", pModule->module32 );
 275
 276       /* Dump the file info */
 277     TRACE( "---\n" );
 278     TRACE( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
 279
 280       /* Dump the segment table */
 281     TRACE( "---\n" );
 282     TRACE( "Segment table:\n" );
 283     pSeg = NE_SEG_TABLE( pModule );
 284     for (i = 0; i < pModule->ne_cseg; i++, pSeg++)
 285         TRACE( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 286                  i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 287                  pSeg->minsize, pSeg->hSeg );
 288
 289       /* Dump the resource table */
 290     TRACE( "---\n" );
 291     TRACE( "Resource table:\n" );
 292     if (pModule->ne_rsrctab)
 293     {
 294         pword = (WORD *)((BYTE *)pModule + pModule->ne_rsrctab);
 295         TRACE( "Alignment: %d\n", *pword++ );
 296         while (*pword)
 297         {
 298             NE_TYPEINFO *ptr = (NE_TYPEINFO *)pword;
 299             NE_NAMEINFO *pname = (NE_NAMEINFO *)(ptr + 1);
 300             TRACE( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 301             for (i = 0; i < ptr->count; i++, pname++)
 302                 TRACE( "offset=%d len=%d id=%04x\n",
 303                       pname->offset, pname->length, pname->id );
 304             pword = (WORD *)pname;
 305         }
 306     }
 307     else TRACE( "None\n" );
 308
 309       /* Dump the resident name table */
 310     TRACE( "---\n" );
 311     TRACE( "Resident-name table:\n" );
 312     pstr = (BYTE*) pModule + pModule->ne_restab;
 313     while (*pstr)
 314     {
 315         TRACE( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 316                  *(WORD *)(pstr + *pstr + 1) );
 317         pstr += *pstr + 1 + sizeof(WORD);
 318     }
 319
 320       /* Dump the module reference table */
 321     TRACE( "---\n" );
 322     TRACE( "Module ref table:\n" );
 323     if (pModule->ne_modtab)
 324     {
 325         pword = (WORD *)((BYTE *)pModule + pModule->ne_modtab);
 326         for (i = 0; i < pModule->ne_cmod; i++, pword++)
 327         {
 328             char name[10];
 329             GetModuleName16( *pword, name, sizeof(name) );
 330             TRACE( "%d: %04x -> '%s'\n", i, *pword, name );
 331         }
 332     }
 333     else TRACE( "None\n" );
 334
 335       /* Dump the entry table */
 336     TRACE( "---\n" );
 337     TRACE( "Entry table:\n" );
 338     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->ne_enttab);
 339     do {
 340         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 341         TRACE( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 342         ordinal = bundle->first;
 343         while (ordinal < bundle->last)
 344         {
 345             if (entry->type == 0xff)
 346                 TRACE("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 347             else
 348                 TRACE("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 349             entry++;
 350         }
 351     } while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 352
 353     /* Dump the non-resident names table */
 354     TRACE( "---\n" );
 355     TRACE( "Non-resident names table:\n" );
 356     if (pModule->nrname_handle)
 357     {
 358         pstr = GlobalLock16( pModule->nrname_handle );
 359         while (*pstr)
 360         {
 361             TRACE( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 362                    *(WORD *)(pstr + *pstr + 1) );
 363             pstr += *pstr + 1 + sizeof(WORD);
 364         }
 365     }
 366     TRACE( "\n" );
 367 }
 368
 369
 370 /***********************************************************************
 371  *           NE_WalkModules
 372  *
 373  * Walk the module list and print the modules.
 374  */
 375 void NE_WalkModules(void)
 376 {
 377     HMODULE16 hModule = hFirstModule;
 378     MESSAGE( "Module Flags Name\n" );
 379     while (hModule)
 380     {
 381         NE_MODULE *pModule = NE_GetPtr( hModule );
 382         if (!pModule)
 383         {
 384             MESSAGE( "Bad module %04x in list\n", hModule );
 385             return;
 386         }
 387         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->ne_flags,
 388                  *((char *)pModule + pModule->ne_restab),
 389                  (char *)pModule + pModule->ne_restab + 1 );
 390         hModule = pModule->next;
 391     }
 392 }
 393
 394
 395 /***********************************************************************
 396  *           NE_InitResourceHandler
 397  *
 398  * Fill in 'resloader' fields in the resource table.
 399  */
 400 static void NE_InitResourceHandler( HMODULE16 hModule )
 401 {
 402     static FARPROC16 proc;
 403
 404     NE_TYPEINFO *pTypeInfo;
 405     NE_MODULE *pModule;
 406
 407     if (!(pModule = NE_GetPtr( hModule )) || !pModule->ne_rsrctab) return;
 408
 409     TRACE("InitResourceHandler[%04x]\n", hModule );
 410
 411     if (!proc) proc = GetProcAddress16( GetModuleHandle16("KERNEL"), "DefResourceHandler" );
 412
 413     pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->ne_rsrctab + 2);
 414     while(pTypeInfo->type_id)
 415     {
 416         memcpy_unaligned( &pTypeInfo->resloader, &proc, sizeof(FARPROC16) );
 417         pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo + 1) + pTypeInfo->count * sizeof(NE_NAMEINFO));
 418     }
 419 }
 420
 421
 422 /***********************************************************************
 423  *           NE_GetOrdinal
 424  *
 425  * Lookup the ordinal for a given name.
 426  */
 427 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 428 {
 429     char buffer[256], *p;
 430     BYTE *cpnt;
 431     BYTE len;
 432     NE_MODULE *pModule;
 433
 434     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 435     if (pModule->ne_flags & NE_FFLAGS_WIN32) return 0;
 436
 437     TRACE("(%04x,'%s')\n", hModule, name );
 438
 439       /* First handle names of the form '#xxxx' */
 440
 441     if (name[0] == '#') return atoi( name + 1 );
 442
 443       /* Now copy and uppercase the string */
 444
 445     strcpy( buffer, name );
 446     for (p = buffer; *p; p++) *p = RtlUpperChar(*p);
 447     len = p - buffer;
 448
 449       /* First search the resident names */
 450
 451     cpnt = (BYTE *)pModule + pModule->ne_restab;
 452
 453       /* Skip the first entry (module name) */
 454     cpnt += *cpnt + 1 + sizeof(WORD);
 455     while (*cpnt)
 456     {
 457         if ((*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 458         {
 459             WORD ordinal;
 460             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 461             TRACE("  Found: ordinal=%d\n", ordinal );
 462             return ordinal;
 463         }
 464         cpnt += *cpnt + 1 + sizeof(WORD);
 465     }
 466
 467       /* Now search the non-resident names table */
 468
 469     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 470     cpnt = GlobalLock16( pModule->nrname_handle );
 471
 472       /* Skip the first entry (module description string) */
 473     cpnt += *cpnt + 1 + sizeof(WORD);
 474     while (*cpnt)
 475     {
 476         if ((*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 477         {
 478             WORD ordinal;
 479             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 480             TRACE("  Found: ordinal=%d\n", ordinal );
 481             return ordinal;
 482         }
 483         cpnt += *cpnt + 1 + sizeof(WORD);
 484     }
 485     return 0;
 486 }
 487
 488
 489 /***********************************************************************
 490  *              NE_GetEntryPoint
 491  */
 492 FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 493 {
 494     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 495 }
 496
 497 /***********************************************************************
 498  *              NE_GetEntryPointEx
 499  */
 500 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 501 {
 502     NE_MODULE *pModule;
 503     WORD sel, offset, i;
 504
 505     ET_ENTRY *entry;
 506     ET_BUNDLE *bundle;
 507
 508     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 509     assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
 510
 511     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->ne_enttab);
 512     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 513     {
 514         if (!(bundle->next))
 515             return 0;
 516         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 517     }
 518
 519     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 520     for (i=0; i < (ordinal - bundle->first - 1); i++)
 521         entry++;
 522
 523     sel = entry->segnum;
 524     memcpy( &offset, &entry->offs, sizeof(WORD) );
 525
 526     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 527     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 528     if (sel==0xffff)
 529         return (FARPROC16)MAKESEGPTR( sel, offset );
 530     if (!snoop)
 531         return (FARPROC16)MAKESEGPTR( sel, offset );
 532     else
 533         return (FARPROC16)SNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)MAKESEGPTR( sel, offset ));
 534 }
 535
 536
 537 /***********************************************************************
 538  *              EntryAddrProc (KERNEL.667) Wine-specific export
 539  *
 540  * Return the entry point for a given ordinal.
 541  */
 542 FARPROC16 WINAPI EntryAddrProc16( HMODULE16 hModule, WORD ordinal )
 543 {
 544     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 545     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 546     return ret;
 547 }
 548
 549 /***********************************************************************
 550  *           NE_SetEntryPoint
 551  *
 552  * Change the value of an entry point. Use with caution!
 553  * It can only change the offset value, not the selector.
 554  */
 555 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 556 {
 557     NE_MODULE *pModule;
 558     ET_ENTRY *entry;
 559     ET_BUNDLE *bundle;
 560     int i;
 561
 562     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 563     assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
 564
 565     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->ne_enttab);
 566     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 567     {
 568         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 569         if (!(bundle->next)) return 0;
 570     }
 571
 572     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 573     for (i=0; i < (ordinal - bundle->first - 1); i++)
 574         entry++;
 575
 576     memcpy( &entry->offs, &offset, sizeof(WORD) );
 577     return TRUE;
 578 }
 579
 580
 581 /***********************************************************************
 582  *           build_bundle_data
 583  *
 584  * Build the entry table bundle data from the on-disk format. Helper for build_module.
 585  */
 586 static void *build_bundle_data( NE_MODULE *pModule, void *dest, const BYTE *table )
 587 {
 588     ET_BUNDLE *oldbundle, *bundle = dest;
 589     ET_ENTRY *entry;
 590     BYTE nr_entries, type;
 591
 592     memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 593     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 594
 595     while ((nr_entries = *table++))
 596     {
 597         if ((type = *table++))
 598         {
 599             bundle->last += nr_entries;
 600             if (type == 0xff)
 601             {
 602                 while (nr_entries--)
 603                 {
 604                     entry->type   = type;
 605                     entry->flags  = *table++;
 606                     table += sizeof(WORD);
 607                     entry->segnum = *table++;
 608                     entry->offs   = *(WORD *)table;
 609                     table += sizeof(WORD);
 610                     entry++;
 611                 }
 612             }
 613             else
 614             {
 615                 while (nr_entries--)
 616                 {
 617                     entry->type   = type;
 618                     entry->flags  = *table++;
 619                     entry->segnum = type;
 620                     entry->offs   = *(WORD *)table;
 621                     table += sizeof(WORD);
 622                     entry++;
 623                 }
 624             }
 625         }
 626         else
 627         {
 628             if (bundle->first == bundle->last)
 629             {
 630                 bundle->first += nr_entries;
 631                 bundle->last += nr_entries;
 632             }
 633             else
 634             {
 635                 oldbundle = bundle;
 636                 oldbundle->next = (char *)entry - (char *)pModule;
 637                 bundle = (ET_BUNDLE *)entry;
 638                 bundle->first = bundle->last = oldbundle->last + nr_entries;
 639                 bundle->next = 0;
 640                 entry = (ET_ENTRY*)(((BYTE*)entry)+sizeof(ET_BUNDLE));
 641             }
 642         }
 643     }
 644     return entry;
 645 }
 646
 647
 648 /***********************************************************************
 649  *           build_module
 650  *
 651  * Build the in-memory module from the on-disk data.
 652  */
 653 static HMODULE16 build_module( const void *mapping, SIZE_T mapping_size, LPCSTR path )
 654 {
 655     const IMAGE_DOS_HEADER *mz_header = mapping;
 656     const IMAGE_OS2_HEADER *ne_header;
 657     const struct ne_segment_table_entry_s *pSeg;
 658     const void *ptr;
 659     int i;
 660     size_t size;
 661     HMODULE16 hModule;
 662     NE_MODULE *pModule;
 663     BYTE *buffer, *pData, *end;
 664     OFSTRUCT *ofs;
 665
 666     if (mapping_size < sizeof(*mz_header)) return ERROR_BAD_FORMAT;
 667     if (mz_header->e_magic != IMAGE_DOS_SIGNATURE) return ERROR_BAD_FORMAT;
 668     ne_header = (const IMAGE_OS2_HEADER *)((const char *)mapping + mz_header->e_lfanew);
 669     if (mz_header->e_lfanew + sizeof(*ne_header) > mapping_size) return ERROR_BAD_FORMAT;
 670     if (ne_header->ne_magic == IMAGE_NT_SIGNATURE) return 21;  /* win32 exe */
 671     if (ne_header->ne_magic == IMAGE_OS2_SIGNATURE_LX)
 672     {
 673         MESSAGE("Sorry, %s is an OS/2 linear executable (LX) file!\n", path);
 674         return 12;
 675     }
 676     if (ne_header->ne_magic != IMAGE_OS2_SIGNATURE) return ERROR_BAD_FORMAT;
 677
 678     /* We now have a valid NE header */
 679
 680     /* check to be able to fall back to loading OS/2 programs as DOS
 681      * FIXME: should this check be reversed in order to be less strict?
 682      * (only fail for OS/2 ne_exetyp 0x01 here?) */
 683     if ((ne_header->ne_exetyp != 0x02 /* Windows */)
 684         && (ne_header->ne_exetyp != 0x04) /* Windows 386 */)
 685         return ERROR_BAD_FORMAT;
 686
 687     size = sizeof(NE_MODULE) +
 688              /* segment table */
 689            ne_header->ne_cseg * sizeof(SEGTABLEENTRY) +
 690              /* resource table */
 691            ne_header->ne_restab - ne_header->ne_rsrctab +
 692              /* resident names table */
 693            ne_header->ne_modtab - ne_header->ne_restab +
 694              /* module ref table */
 695            ne_header->ne_cmod * sizeof(WORD) +
 696              /* imported names table */
 697            ne_header->ne_enttab - ne_header->ne_imptab +
 698              /* entry table length */
 699            ne_header->ne_cbenttab +
 700              /* entry table extra conversion space */
 701            sizeof(ET_BUNDLE) +
 702            2 * (ne_header->ne_cbenttab - ne_header->ne_cmovent*6) +
 703              /* loaded file info */
 704            sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 705
 706     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 707     if (!hModule) return ERROR_BAD_FORMAT;
 708
 709     FarSetOwner16( hModule, hModule );
 710     pModule = (NE_MODULE *)GlobalLock16( hModule );
 711     memcpy( pModule, ne_header, sizeof(*ne_header) );
 712     pModule->count = 0;
 713     /* check programs for default minimal stack size */
 714     if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE) && (pModule->ne_stack < 0x1400))
 715         pModule->ne_stack = 0x1400;
 716
 717     pModule->self         = hModule;
 718     pModule->mapping      = mapping;
 719     pModule->mapping_size = mapping_size;
 720
 721     pData = (BYTE *)(pModule + 1);
 722
 723     /* Clear internal Wine flags in case they are set in the EXE file */
 724
 725     pModule->ne_flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 726
 727     /* Get the segment table */
 728
 729     pModule->ne_segtab = pData - (BYTE *)pModule;
 730     if (!(pSeg = NE_GET_DATA( pModule, mz_header->e_lfanew + ne_header->ne_segtab,
 731                               ne_header->ne_cseg * sizeof(struct ne_segment_table_entry_s) )))
 732         goto failed;
 733     for (i = ne_header->ne_cseg; i > 0; i--, pSeg++)
 734     {
 735         memcpy( pData, pSeg, sizeof(*pSeg) );
 736         pData += sizeof(SEGTABLEENTRY);
 737     }
 738
 739     /* Get the resource table */
 740
 741     if (ne_header->ne_rsrctab < ne_header->ne_restab)
 742     {
 743         pModule->ne_rsrctab = pData - (BYTE *)pModule;
 744         if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_rsrctab,
 745                            ne_header->ne_restab - ne_header->ne_rsrctab )) goto failed;
 746         pData += ne_header->ne_restab - ne_header->ne_rsrctab;
 747     }
 748     else pModule->ne_rsrctab = 0;  /* No resource table */
 749
 750     /* Get the resident names table */
 751
 752     pModule->ne_restab = pData - (BYTE *)pModule;
 753     if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_restab,
 754                        ne_header->ne_modtab - ne_header->ne_restab )) goto failed;
 755     pData += ne_header->ne_modtab - ne_header->ne_restab;
 756
 757     /* Get the module references table */
 758
 759     if (ne_header->ne_cmod > 0)
 760     {
 761         pModule->ne_modtab = pData - (BYTE *)pModule;
 762         if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_modtab,
 763                            ne_header->ne_cmod * sizeof(WORD) )) goto failed;
 764         pData += ne_header->ne_cmod * sizeof(WORD);
 765     }
 766     else pModule->ne_modtab = 0;  /* No module references */
 767
 768     /* Get the imported names table */
 769
 770     pModule->ne_imptab = pData - (BYTE *)pModule;
 771     if (!NE_READ_DATA( pModule, pData, mz_header->e_lfanew + ne_header->ne_imptab,
 772                        ne_header->ne_enttab - ne_header->ne_imptab )) goto failed;
 773     pData += ne_header->ne_enttab - ne_header->ne_imptab;
 774
 775     /* Load entry table, convert it to the optimized version used by Windows */
 776
 777     pModule->ne_enttab = pData - (BYTE *)pModule;
 778     if (!(ptr = NE_GET_DATA( pModule, mz_header->e_lfanew + ne_header->ne_enttab,
 779                              ne_header->ne_cbenttab ))) goto failed;
 780     end = build_bundle_data( pModule, pData, ptr );
 781
 782     pData += ne_header->ne_cbenttab + sizeof(ET_BUNDLE) +
 783         2 * (ne_header->ne_cbenttab - ne_header->ne_cmovent*6);
 784
 785     if (end > pData)
 786     {
 787         FIXME( "not enough space for entry table for %s\n", debugstr_a(path) );
 788         goto failed;
 789     }
 790
 791     /* Store the filename information */
 792
 793     pModule->fileinfo = pData - (BYTE *)pModule;
 794     ofs = (OFSTRUCT *)pData;
 795     ofs->cBytes = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path);
 796     ofs->fFixedDisk = 1;
 797     strcpy( ofs->szPathName, path );
 798     pData += ofs->cBytes + 1;
 799     assert( (BYTE *)pModule + size <= pData );
 800
 801     /* Get the non-resident names table */
 802
 803     if (ne_header->ne_cbnrestab)
 804     {
 805         pModule->nrname_handle = GlobalAlloc16( 0, ne_header->ne_cbnrestab );
 806         if (!pModule->nrname_handle) goto failed;
 807         FarSetOwner16( pModule->nrname_handle, hModule );
 808         buffer = GlobalLock16( pModule->nrname_handle );
 809         if (!NE_READ_DATA( pModule, buffer, ne_header->ne_nrestab, ne_header->ne_cbnrestab ))
 810         {
 811             GlobalFree16( pModule->nrname_handle );
 812             goto failed;
 813         }
 814     }
 815     else pModule->nrname_handle = 0;
 816
 817     /* Allocate a segment for the implicitly-loaded DLLs */
 818
 819     if (pModule->ne_cmod)
 820     {
 821         pModule->dlls_to_init = GlobalAlloc16( GMEM_ZEROINIT,
 822                                                (pModule->ne_cmod+1)*sizeof(HMODULE16) );
 823         if (!pModule->dlls_to_init)
 824         {
 825             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 826             goto failed;
 827         }
 828         FarSetOwner16( pModule->dlls_to_init, hModule );
 829     }
 830     else pModule->dlls_to_init = 0;
 831
 832     NE_RegisterModule( pModule );
 833     return hModule;
 834
 835 failed:
 836     GlobalFree16( hModule );
 837     return ERROR_BAD_FORMAT;
 838 }
 839
 840
 841 /***********************************************************************
 842  *           NE_LoadDLLs
 843  *
 844  * Load all DLLs implicitly linked to a module.
 845  */
 846 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 847 {
 848     int i;
 849     WORD *pModRef = (WORD *)((char *)pModule + pModule->ne_modtab);
 850     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 851
 852     for (i = 0; i < pModule->ne_cmod; i++, pModRef++)
 853     {
 854         char buffer[260], *p;
 855         BYTE *pstr = (BYTE *)pModule + pModule->ne_imptab + *pModRef;
 856         memcpy( buffer, pstr + 1, *pstr );
 857         *(buffer + *pstr) = 0; /* terminate it */
 858
 859         TRACE("Loading '%s'\n", buffer );
 860         if (!(*pModRef = GetModuleHandle16( buffer )))
 861         {
 862             /* If the DLL is not loaded yet, load it and store */
 863             /* its handle in the list of DLLs to initialize.   */
 864             HMODULE16 hDLL;
 865
 866             /* Append .DLL to name if no extension present */
 867             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 868                     strcat( buffer, ".DLL" );
 869
 870             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 871             {
 872                 /* FIXME: cleanup what was done */
 873
 874                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 875                      buffer, *((BYTE*)pModule + pModule->ne_restab),
 876                      (char *)pModule + pModule->ne_restab + 1, hDLL );
 877                 return FALSE;
 878             }
 879             *pModRef = GetExePtr( hDLL );
 880             *pDLLs++ = *pModRef;
 881         }
 882         else  /* Increment the reference count of the DLL */
 883         {
 884             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 885             if (pOldDLL) pOldDLL->count++;
 886         }
 887     }
 888     return TRUE;
 889 }
 890
 891
 892 /**********************************************************************
 893  *          NE_DoLoadModule
 894  *
 895  * Load first instance of NE module from file.
 896  *
 897  * pModule must point to a module structure prepared by build_module.
 898  * This routine must never be called twice on a module.
 899  */
 900 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
 901 {
 902     /* Allocate the segments for this module */
 903
 904     if (!NE_CreateAllSegments( pModule ))
 905         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
 906
 907     /* Load the referenced DLLs */
 908
 909     if (!NE_LoadDLLs( pModule ))
 910         return ERROR_FILE_NOT_FOUND; /* 2 */
 911
 912     /* Load the segments */
 913
 914     NE_LoadAllSegments( pModule );
 915
 916     /* Make sure the usage count is 1 on the first loading of  */
 917     /* the module, even if it contains circular DLL references */
 918
 919     pModule->count = 1;
 920
 921     return NE_GetInstance( pModule );
 922 }
 923
 924 /**********************************************************************
 925  *          NE_LoadModule
 926  *
 927  * Load first instance of NE module. (Note: caller is responsible for
 928  * ensuring the module isn't already loaded!)
 929  *
 930  * If the module turns out to be an executable module, only a
 931  * handle to a module stub is returned; this needs to be initialized
 932  * by calling NE_DoLoadModule later, in the context of the newly
 933  * created process.
 934  *
 935  * If lib_only is TRUE, however, the module is perforce treated
 936  * like a DLL module, even if it is an executable module.
 937  *
 938  */
 939 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
 940 {
 941     NE_MODULE *pModule;
 942     HMODULE16 hModule;
 943     HINSTANCE16 hInstance;
 944     HFILE16 hFile;
 945     OFSTRUCT ofs;
 946     HANDLE mapping;
 947     void *ptr;
 948     MEMORY_BASIC_INFORMATION info;
 949
 950     /* Open file */
 951     if ((hFile = OpenFile16( name, &ofs, OF_READ|OF_SHARE_DENY_WRITE )) == HFILE_ERROR16)
 952         return ERROR_FILE_NOT_FOUND;
 953
 954     mapping = CreateFileMappingW( DosFileHandleToWin32Handle(hFile), NULL, PAGE_WRITECOPY, 0, 0, NULL );
 955     _lclose16( hFile );
 956     if (!mapping) return ERROR_BAD_FORMAT;
 957
 958     ptr = MapViewOfFile( mapping, FILE_MAP_COPY, 0, 0, 0 );
 959     CloseHandle( mapping );
 960     if (!ptr) return ERROR_BAD_FORMAT;
 961
 962     VirtualQuery( ptr, &info, sizeof(info) );
 963     hModule = build_module( ptr, info.RegionSize, ofs.szPathName );
 964
 965     if (hModule < 32)
 966     {
 967         UnmapViewOfFile( ptr );
 968         return hModule;
 969     }
 970
 971     SNOOP16_RegisterDLL( hModule, ofs.szPathName );
 972     NE_InitResourceHandler( hModule );
 973
 974     pModule = NE_GetPtr( hModule );
 975
 976     if ( !lib_only && !( pModule->ne_flags & NE_FFLAGS_LIBMODULE ) )
 977         return hModule;
 978
 979     hInstance = NE_DoLoadModule( pModule );
 980     if ( hInstance < 32 )
 981     {
 982         /* cleanup ... */
 983         NE_FreeModule( hModule, 0 );
 984     }
 985
 986     return hInstance;
 987 }
 988
 989
 990 /***********************************************************************
 991  *           NE_DoLoadBuiltinModule
 992  *
 993  * Load a built-in Win16 module. Helper function for NE_LoadBuiltinModule.
 994  */
 995 static HMODULE16 NE_DoLoadBuiltinModule( const IMAGE_DOS_HEADER *mz_header, const char *file_name,
 996                                          HMODULE owner32 )
 997 {
 998     NE_MODULE *pModule;
 999     HMODULE16 hModule;
1000     HINSTANCE16 hInstance;
1001     OSVERSIONINFOW versionInfo;
1002     const IMAGE_OS2_HEADER *ne_header;
1003     SIZE_T mapping_size = ~0UL;  /* assume builtins don't contain invalid offsets... */
1004
1005     ne_header = (const IMAGE_OS2_HEADER *)((const BYTE *)mz_header + mz_header->e_lfanew);
1006     hModule = build_module( mz_header, mapping_size, file_name );
1007     if (hModule < 32) return hModule;
1008     pModule = GlobalLock16( hModule );
1009     pModule->ne_flags |= NE_FFLAGS_BUILTIN;
1010     pModule->owner32 = owner32;
1011
1012     /* fake the expected version the module should have according to the current Windows version */
1013     versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1014     if (GetVersionExW( &versionInfo ))
1015         pModule->ne_expver = MAKEWORD( versionInfo.dwMinorVersion, versionInfo.dwMajorVersion );
1016
1017     hInstance = NE_DoLoadModule( pModule );
1018     if (hInstance < 32) NE_FreeModule( hModule, 0 );
1019
1020     NE_InitResourceHandler( hModule );
1021
1022     if (pModule->ne_heap)
1023     {
1024         SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + pModule->ne_autodata - 1;
1025         unsigned int size = pSeg->minsize + pModule->ne_heap;
1026         if (size > 0xfffe) size = 0xfffe;
1027         LocalInit16( GlobalHandleToSel16(pSeg->hSeg), pSeg->minsize, size );
1028     }
1029
1030     patch_code_segment( pModule );
1031
1032     return hInstance;
1033 }
1034
1035
1036 /**********************************************************************
1037  *          MODULE_LoadModule16
1038  *
1039  * Load a NE module in the order of the loadorder specification.
1040  * The caller is responsible that the module is not loaded already.
1041  *
1042  */
1043 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
1044 {
1045     HINSTANCE16 hinst = 2;
1046     HMODULE16 hModule;
1047     HMODULE mod32 = 0;
1048     NE_MODULE *pModule;
1049     const IMAGE_DOS_HEADER *descr = NULL;
1050     const char *file_name = NULL;
1051     char dllname[20], owner[20], *p;
1052     const char *basename;
1053     int owner_exists;
1054
1055     /* strip path information */
1056
1057     basename = libname;
1058     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
1059     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
1060     if ((p = strrchr( basename, '/' ))) basename = p + 1;
1061
1062     if (strlen(basename) < sizeof(dllname)-4)
1063     {
1064         strcpy( dllname, basename );
1065         p = strrchr( dllname, '.' );
1066         if (!p) strcat( dllname, ".dll" );
1067         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
1068
1069         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &owner_exists ) != -1)
1070         {
1071             mod32 = LoadLibraryA( owner );
1072             if (mod32)
1073             {
1074                 if (!(descr = find_dll_descr( dllname, &file_name )))
1075                 {
1076                     FreeLibrary( mod32 );
1077                     owner_exists = 0;
1078                 }
1079                 /* loading the 32-bit library can have the side effect of loading the module */
1080                 /* if so, simply incr the ref count and return the module */
1081                 if ((hModule = GetModuleHandle16( libname )))
1082                 {
1083                     TRACE( "module %s already loaded by owner\n", libname );
1084                     pModule = NE_GetPtr( hModule );
1085                     if (pModule) pModule->count++;
1086                     FreeLibrary( mod32 );
1087                     return hModule;
1088                 }
1089             }
1090             else
1091             {
1092                 /* it's probably disabled by the load order config */
1093                 WARN( "couldn't load owner %s for 16-bit dll %s\n", owner, dllname );
1094                 return ERROR_FILE_NOT_FOUND;
1095             }
1096         }
1097     }
1098
1099     if (descr)
1100     {
1101         TRACE("Trying built-in '%s'\n", libname);
1102         hinst = NE_DoLoadBuiltinModule( descr, file_name, mod32 );
1103         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : builtin\n", debugstr_a(file_name));
1104     }
1105     else
1106     {
1107         TRACE("Trying native dll '%s'\n", libname);
1108         hinst = NE_LoadModule(libname, lib_only);
1109         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : native\n", debugstr_a(libname));
1110         if (hinst == ERROR_FILE_NOT_FOUND && owner_exists) hinst = 21;  /* win32 module */
1111     }
1112
1113     if (hinst > 32 && !implicit)
1114     {
1115         hModule = GetModuleHandle16(libname);
1116         if(!hModule)
1117         {
1118             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle. Filename too long ?\n",
1119                 libname, hinst);
1120             return ERROR_INVALID_HANDLE;
1121         }
1122
1123         pModule = NE_GetPtr(hModule);
1124         if(!pModule)
1125         {
1126             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
1127                 libname, hinst);
1128             return ERROR_INVALID_HANDLE;
1129         }
1130
1131         TRACE("Loaded module '%s' at 0x%04x.\n", libname, hinst);
1132
1133         /*
1134          * Call initialization routines for all loaded DLLs. Note that
1135          * when we load implicitly linked DLLs this will be done by InitTask().
1136          */
1137         if(pModule->ne_flags & NE_FFLAGS_LIBMODULE)
1138         {
1139             NE_InitializeDLLs(hModule);
1140             NE_DllProcessAttach(hModule);
1141         }
1142     }
1143     return hinst;       /* The last error that occurred */
1144 }
1145
1146
1147 /**********************************************************************
1148  *          NE_CreateThread
1149  *
1150  * Create the thread for a 16-bit module.
1151  */
1152 static HINSTANCE16 NE_CreateThread( NE_MODULE *pModule, WORD cmdShow, LPCSTR cmdline )
1153 {
1154     HANDLE hThread;
1155     TDB *pTask;
1156     HTASK16 hTask;
1157     HINSTANCE16 instance = 0;
1158
1159     if (!(hTask = TASK_SpawnTask( pModule, cmdShow, cmdline + 1, *cmdline, &hThread )))
1160         return 0;
1161
1162     /* Post event to start the task */
1163     PostEvent16( hTask );
1164
1165     /* Wait until we get the instance handle */
1166     do
1167     {
1168         DirectedYield16( hTask );
1169         if (!IsTask16( hTask ))  /* thread has died */
1170         {
1171             DWORD exit_code;
1172             WaitForSingleObject( hThread, INFINITE );
1173             GetExitCodeThread( hThread, &exit_code );
1174             CloseHandle( hThread );
1175             return exit_code;
1176         }
1177         if (!(pTask = GlobalLock16( hTask ))) break;
1178         instance = pTask->hInstance;
1179         GlobalUnlock16( hTask );
1180     } while (!instance);
1181
1182     CloseHandle( hThread );
1183     return instance;
1184 }
1185
1186
1187 /**********************************************************************
1188  *          LoadModule      (KERNEL.45)
1189  */
1190 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
1191 {
1192     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
1193     LOADPARAMS16 *params;
1194     HMODULE16 hModule;
1195     NE_MODULE *pModule;
1196     LPSTR cmdline;
1197     WORD cmdShow;
1198
1199     if (name == NULL) return 0;
1200
1201     /* Load module */
1202
1203     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1204     {
1205         /* Special case: second instance of an already loaded NE module */
1206
1207         if ( !( pModule = NE_GetPtr( hModule ) ) ) return ERROR_BAD_FORMAT;
1208         if ( pModule->module32 ) return (HINSTANCE16)21;
1209
1210         /* Increment refcount */
1211
1212         pModule->count++;
1213     }
1214     else
1215     {
1216         /* Main case: load first instance of NE module */
1217
1218         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1219             return hModule;
1220
1221         if ( !(pModule = NE_GetPtr( hModule )) )
1222             return ERROR_BAD_FORMAT;
1223     }
1224
1225     /* If library module, we just retrieve the instance handle */
1226
1227     if ( ( pModule->ne_flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1228         return NE_GetInstance( pModule );
1229
1230     /*
1231      *  At this point, we need to create a new process.
1232      *
1233      *  pModule points either to an already loaded module, whose refcount
1234      *  has already been incremented (to avoid having the module vanish
1235      *  in the meantime), or else to a stub module which contains only header
1236      *  information.
1237      */
1238     params = (LOADPARAMS16 *)paramBlock;
1239     cmdShow = ((WORD *)MapSL(params->showCmd))[1];
1240     cmdline = MapSL( params->cmdLine );
1241     return NE_CreateThread( pModule, cmdShow, cmdline );
1242 }
1243
1244
1245 /**********************************************************************
1246  *          NE_StartTask
1247  *
1248  * Startup code for a new 16-bit task.
1249  */
1250 DWORD NE_StartTask(void)
1251 {
1252     TDB *pTask = TASK_GetCurrent();
1253     NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
1254     HINSTANCE16 hInstance, hPrevInstance;
1255     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1256     WORD sp;
1257
1258     if ( pModule->count > 0 )
1259     {
1260         /* Second instance of an already loaded NE module */
1261         /* Note that the refcount was already incremented by the parent */
1262
1263         hPrevInstance = NE_GetInstance( pModule );
1264
1265         if ( pModule->ne_autodata )
1266             if ( NE_CreateSegment( pModule, pModule->ne_autodata ) )
1267                 NE_LoadSegment( pModule, pModule->ne_autodata );
1268
1269         hInstance = NE_GetInstance( pModule );
1270         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->ne_autodata, hPrevInstance);
1271
1272     }
1273     else
1274     {
1275         /* Load first instance of NE module */
1276
1277         pModule->ne_flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1278
1279         hInstance = NE_DoLoadModule( pModule );
1280         hPrevInstance = 0;
1281     }
1282
1283     if ( hInstance >= 32 )
1284     {
1285         CONTEXT86 context;
1286
1287         /* Enter instance handles into task struct */
1288
1289         pTask->hInstance = hInstance;
1290         pTask->hPrevInstance = hPrevInstance;
1291
1292         /* Use DGROUP for 16-bit stack */
1293
1294         if (!(sp = OFFSETOF(pModule->ne_sssp)))
1295             sp = pSegTable[SELECTOROF(pModule->ne_sssp)-1].minsize + pModule->ne_stack;
1296         sp &= ~1;
1297         sp -= sizeof(STACK16FRAME);
1298         NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( GlobalHandleToSel16(hInstance), sp );
1299
1300         /* Registers at initialization must be:
1301          * ax   zero
1302          * bx   stack size in bytes
1303          * cx   heap size in bytes
1304          * si   previous app instance
1305          * di   current app instance
1306          * bp   zero
1307          * es   selector to the PSP
1308          * ds   dgroup of the application
1309          * ss   stack selector
1310          * sp   top of the stack
1311          */
1312         memset( &context, 0, sizeof(context) );
1313         context.SegCs  = GlobalHandleToSel16(pSegTable[SELECTOROF(pModule->ne_csip) - 1].hSeg);
1314         context.SegDs  = GlobalHandleToSel16(pTask->hInstance);
1315         context.SegEs  = pTask->hPDB;
1316         context.SegFs  = wine_get_fs();
1317         context.SegGs  = wine_get_gs();
1318         context.Eip    = OFFSETOF(pModule->ne_csip);
1319         context.Ebx    = pModule->ne_stack;
1320         context.Ecx    = pModule->ne_heap;
1321         context.Edi    = pTask->hInstance;
1322         context.Esi    = pTask->hPrevInstance;
1323
1324         /* Now call 16-bit entry point */
1325
1326         TRACE("Starting main program: cs:ip=%04lx:%04lx ds=%04lx ss:sp=%04x:%04x\n",
1327               context.SegCs, context.Eip, context.SegDs,
1328               SELECTOROF(NtCurrentTeb()->WOW32Reserved),
1329               OFFSETOF(NtCurrentTeb()->WOW32Reserved) );
1330
1331         WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
1332         ExitThread( LOWORD(context.Eax) );
1333     }
1334     return hInstance;  /* error code */
1335 }
1336
1337 /***********************************************************************
1338  *           LoadLibrary     (KERNEL.95)
1339  *           LoadLibrary16   (KERNEL32.35)
1340  */
1341 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1342 {
1343     return LoadModule16(libname, (LPVOID)-1 );
1344 }
1345
1346
1347 /**********************************************************************
1348  *          MODULE_CallWEP
1349  *
1350  * Call a DLL's WEP, allowing it to shut down.
1351  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1352  */
1353 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1354 {
1355     BOOL16 ret;
1356     FARPROC16 WEP = GetProcAddress16( hModule, "WEP" );
1357     if (!WEP) return FALSE;
1358
1359     __TRY
1360     {
1361         WORD args[1];
1362         DWORD dwRet;
1363
1364         args[0] = WEP_FREE_DLL;
1365         WOWCallback16Ex( (DWORD)WEP, WCB16_PASCAL, sizeof(args), args, &dwRet );
1366         ret = LOWORD(dwRet);
1367     }
1368     __EXCEPT_PAGE_FAULT
1369     {
1370         WARN("Page fault\n");
1371         ret = 0;
1372     }
1373     __ENDTRY
1374
1375     return ret;
1376 }
1377
1378
1379 /**********************************************************************
1380  *          NE_FreeModule
1381  *
1382  * Implementation of FreeModule16().
1383  */
1384 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1385 {
1386     HMODULE16 *hPrevModule;
1387     NE_MODULE *pModule;
1388     HMODULE16 *pModRef;
1389     int i;
1390
1391     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1392     hModule = pModule->self;
1393
1394     TRACE("%04x count %d\n", hModule, pModule->count );
1395
1396     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1397     else pModule->count = 0;
1398
1399     if (call_wep && !(pModule->ne_flags & NE_FFLAGS_WIN32))
1400     {
1401         /* Free the objects owned by the DLL module */
1402         NE_CallUserSignalProc( hModule, USIG16_DLL_UNLOAD );
1403
1404         if (pModule->ne_flags & NE_FFLAGS_LIBMODULE)
1405             MODULE_CallWEP( hModule );
1406         else
1407             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1408     }
1409
1410     TRACE_(loaddll)("Unloaded module %s : %s\n", debugstr_a(NE_MODULE_NAME(pModule)),
1411                     (pModule->ne_flags & NE_FFLAGS_BUILTIN) ? "builtin" : "native");
1412
1413     /* Clear magic number just in case */
1414
1415     pModule->ne_magic = pModule->self = 0;
1416     if (pModule->owner32) FreeLibrary( pModule->owner32 );
1417     else if (pModule->mapping) UnmapViewOfFile( (void *)pModule->mapping );
1418
1419       /* Remove it from the linked list */
1420
1421     hPrevModule = &hFirstModule;
1422     while (*hPrevModule && (*hPrevModule != hModule))
1423     {
1424         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1425     }
1426     if (*hPrevModule) *hPrevModule = pModule->next;
1427
1428     /* Free the referenced modules */
1429
1430     pModRef = (HMODULE16*)((char *)pModule + pModule->ne_modtab);
1431     for (i = 0; i < pModule->ne_cmod; i++, pModRef++)
1432     {
1433         NE_FreeModule( *pModRef, call_wep );
1434     }
1435
1436     /* Free the module storage */
1437
1438     GlobalFreeAll16( hModule );
1439     return TRUE;
1440 }
1441
1442
1443 /**********************************************************************
1444  *          FreeModule    (KERNEL.46)
1445  */
1446 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1447 {
1448     return NE_FreeModule( hModule, TRUE );
1449 }
1450
1451
1452 /***********************************************************************
1453  *           FreeLibrary     (KERNEL.96)
1454  *           FreeLibrary16   (KERNEL32.36)
1455  */
1456 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1457 {
1458     TRACE("%04x\n", handle );
1459     FreeModule16( handle );
1460 }
1461
1462
1463 /***********************************************************************
1464  *          GetModuleHandle16 (KERNEL32.@)
1465  */
1466 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1467 {
1468     HMODULE16   hModule = hFirstModule;
1469     LPSTR       s;
1470     BYTE        len, *name_table;
1471     char        tmpstr[MAX_PATH];
1472     NE_MODULE *pModule;
1473
1474     TRACE("(%s)\n", name);
1475
1476     if (!HIWORD(name)) return GetExePtr(LOWORD(name));
1477
1478     len = strlen(name);
1479     if (!len) return 0;
1480
1481     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1482
1483     /* If 'name' matches exactly the module name of a module:
1484      * Return its handle.
1485      */
1486     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1487     {
1488         pModule = NE_GetPtr( hModule );
1489         if (!pModule) break;
1490         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1491
1492         name_table = (BYTE *)pModule + pModule->ne_restab;
1493         if ((*name_table == len) && !strncmp(name, (char*) name_table+1, len))
1494             return hModule;
1495     }
1496
1497     /* If uppercased 'name' matches exactly the module name of a module:
1498      * Return its handle
1499      */
1500     for (s = tmpstr; *s; s++) *s = RtlUpperChar(*s);
1501
1502     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1503     {
1504         pModule = NE_GetPtr( hModule );
1505         if (!pModule) break;
1506         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1507
1508         name_table = (BYTE *)pModule + pModule->ne_restab;
1509         /* FIXME: the strncasecmp is WRONG. It should not be case insensitive,
1510          * but case sensitive! (Unfortunately Winword 6 and subdlls have
1511          * lowercased module names, but try to load uppercase DLLs, so this
1512          * 'i' compare is just a quickfix until the loader handles that
1513          * correctly. -MM 990705
1514          */
1515         if ((*name_table == len) && !NE_strncasecmp(tmpstr, (const char*)name_table+1, len))
1516             return hModule;
1517     }
1518
1519     /* If the base filename of 'name' matches the base filename of the module
1520      * filename of some module (case-insensitive compare):
1521      * Return its handle.
1522      */
1523
1524     /* basename: search backwards in passed name to \ / or : */
1525     s = tmpstr + strlen(tmpstr);
1526     while (s > tmpstr)
1527     {
1528         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1529                 break;
1530         s--;
1531     }
1532
1533     /* search this in loaded filename list */
1534     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1535     {
1536         char            *loadedfn;
1537         OFSTRUCT        *ofs;
1538
1539         pModule = NE_GetPtr( hModule );
1540         if (!pModule) break;
1541         if (!pModule->fileinfo) continue;
1542         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1543
1544         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1545         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1546         /* basename: search backwards in pathname to \ / or : */
1547         while (loadedfn > (char*)ofs->szPathName)
1548         {
1549             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1550                     break;
1551             loadedfn--;
1552         }
1553         /* case insensitive compare ... */
1554         if (!NE_strcasecmp(loadedfn, s))
1555             return hModule;
1556     }
1557     return 0;
1558 }
1559
1560
1561 /**********************************************************************
1562  *          GetModuleName    (KERNEL.27)
1563  */
1564 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1565 {
1566     NE_MODULE *pModule;
1567     BYTE *p;
1568
1569     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1570     p = (BYTE *)pModule + pModule->ne_restab;
1571     if (count > *p) count = *p + 1;
1572     if (count > 0)
1573     {
1574         memcpy( buf, p + 1, count - 1 );
1575         buf[count-1] = '\0';
1576     }
1577     return TRUE;
1578 }
1579
1580
1581 /**********************************************************************
1582  *          GetModuleFileName      (KERNEL.49)
1583  *
1584  * Comment: see GetModuleFileNameA
1585  *
1586  * Even if invoked by second instance of a program,
1587  * it still returns path of first one.
1588  */
1589 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1590                                   INT16 nSize )
1591 {
1592     NE_MODULE *pModule;
1593
1594     /* Win95 does not query hModule if set to 0 !
1595      * Is this wrong or maybe Win3.1 only ? */
1596     if (!hModule) hModule = GetCurrentTask();
1597
1598     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1599     lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1600     if (pModule->ne_expver < 0x400)
1601         GetShortPathNameA(NE_MODULE_NAME(pModule), lpFileName, nSize);
1602     TRACE("%04x -> '%s'\n", hModule, lpFileName );
1603     return strlen(lpFileName);
1604 }
1605
1606
1607 /**********************************************************************
1608  *          GetModuleUsage    (KERNEL.48)
1609  */
1610 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1611 {
1612     NE_MODULE *pModule = NE_GetPtr( hModule );
1613     return pModule ? pModule->count : 0;
1614 }
1615
1616
1617 /**********************************************************************
1618  *          GetExpWinVer    (KERNEL.167)
1619  */
1620 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1621 {
1622     NE_MODULE *pModule = NE_GetPtr( hModule );
1623     if ( !pModule ) return 0;
1624     return pModule->ne_expver;
1625 }
1626
1627
1628 /***********************************************************************
1629  *           WinExec     (KERNEL.166)
1630  */
1631 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
1632 {
1633     LPCSTR p, args = NULL;
1634     LPCSTR name_beg, name_end;
1635     LPSTR name, cmdline;
1636     int arglen;
1637     HINSTANCE16 ret;
1638     char buffer[MAX_PATH];
1639
1640     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
1641     {
1642         name_beg = lpCmdLine+1;
1643         p = strchr ( lpCmdLine+1, '"' );
1644         if (p)
1645         {
1646             name_end = p;
1647             args = strchr ( p, ' ' );
1648         }
1649         else /* yes, even valid with trailing '"' missing */
1650             name_end = lpCmdLine+strlen(lpCmdLine);
1651     }
1652     else
1653     {
1654         name_beg = lpCmdLine;
1655         args = strchr( lpCmdLine, ' ' );
1656         name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
1657     }
1658
1659     if ((name_beg == lpCmdLine) && (!args))
1660     { /* just use the original cmdline string as file name */
1661         name = (LPSTR)lpCmdLine;
1662     }
1663     else
1664     {
1665         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
1666             return ERROR_NOT_ENOUGH_MEMORY;
1667         memcpy( name, name_beg, name_end - name_beg );
1668         name[name_end - name_beg] = '\0';
1669     }
1670
1671     if (args)
1672     {
1673         args++;
1674         arglen = strlen(args);
1675         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
1676         cmdline[0] = (BYTE)arglen;
1677         strcpy( cmdline + 1, args );
1678     }
1679     else
1680     {
1681         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
1682         cmdline[0] = cmdline[1] = 0;
1683     }
1684
1685     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
1686
1687     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
1688     {
1689         LOADPARAMS16 params;
1690         WORD showCmd[2];
1691         showCmd[0] = 2;
1692         showCmd[1] = nCmdShow;
1693
1694         params.hEnvironment = 0;
1695         params.cmdLine = MapLS( cmdline );
1696         params.showCmd = MapLS( showCmd );
1697         params.reserved = 0;
1698
1699         ret = LoadModule16( buffer, &params );
1700         UnMapLS( params.cmdLine );
1701         UnMapLS( params.showCmd );
1702     }
1703     else ret = GetLastError();
1704
1705     HeapFree( GetProcessHeap(), 0, cmdline );
1706     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
1707
1708     if (ret == 21 || ret == ERROR_BAD_FORMAT)  /* 32-bit module or unknown executable*/
1709     {
1710         DWORD count;
1711         ReleaseThunkLock( &count );
1712         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
1713         RestoreThunkLock( count );
1714     }
1715     return ret;
1716 }
1717
1718 /***********************************************************************
1719  *           GetProcAddress   (KERNEL.50)
1720  */
1721 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1722 {
1723     WORD ordinal;
1724     FARPROC16 ret;
1725
1726     if (!hModule) hModule = GetCurrentTask();
1727     hModule = GetExePtr( hModule );
1728
1729     if (HIWORD(name) != 0)
1730     {
1731         ordinal = NE_GetOrdinal( hModule, name );
1732         TRACE("%04x '%s'\n", hModule, name );
1733     }
1734     else
1735     {
1736         ordinal = LOWORD(name);
1737         TRACE("%04x %04x\n", hModule, ordinal );
1738     }
1739     if (!ordinal) return (FARPROC16)0;
1740
1741     ret = NE_GetEntryPoint( hModule, ordinal );
1742
1743     TRACE("returning %p\n", ret );
1744     return ret;
1745 }
1746
1747
1748 /***************************************************************************
1749  *              HasGPHandler                    (KERNEL.338)
1750  */
1751 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1752 {
1753     HMODULE16 hModule;
1754     int gpOrdinal;
1755     SEGPTR gpPtr;
1756     GPHANDLERDEF *gpHandler;
1757
1758     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1759          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1760          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1761          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1762          && (gpHandler = MapSL( gpPtr )) != NULL )
1763     {
1764         while (gpHandler->selector)
1765         {
1766             if (    SELECTOROF(address) == gpHandler->selector
1767                  && OFFSETOF(address)   >= gpHandler->rangeStart
1768                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1769                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1770             gpHandler++;
1771         }
1772     }
1773
1774     return 0;
1775 }
1776
1777
1778 /**********************************************************************
1779  *          GetModuleHandle    (KERNEL.47)
1780  *
1781  * Find a module from a module name.
1782  *
1783  * NOTE: The current implementation works the same way the Windows 95 one
1784  *       does. Do not try to 'fix' it, fix the callers.
1785  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1786  *       + It does not care about paths, just about basenames. (same as Windows)
1787  *
1788  * RETURNS
1789  *   LOWORD:
1790  *      the win16 module handle if found
1791  *      0 if not
1792  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1793  *      Always hFirstModule
1794  */
1795 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1796 {
1797     if (HIWORD(name) == 0)
1798         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1799     return MAKELONG(GetModuleHandle16( MapSL(name)), hFirstModule );
1800 }
1801
1802 /**********************************************************************
1803  *          NE_GetModuleByFilename
1804  */
1805 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1806 {
1807     HMODULE16   hModule;
1808     LPSTR       s, p;
1809     BYTE        len, *name_table;
1810     char        tmpstr[MAX_PATH];
1811     NE_MODULE *pModule;
1812
1813     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1814
1815     /* If the base filename of 'name' matches the base filename of the module
1816      * filename of some module (case-insensitive compare):
1817      * Return its handle.
1818      */
1819
1820     /* basename: search backwards in passed name to \ / or : */
1821     s = tmpstr + strlen(tmpstr);
1822     while (s > tmpstr)
1823     {
1824         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1825                 break;
1826         s--;
1827     }
1828
1829     /* search this in loaded filename list */
1830     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1831     {
1832         char            *loadedfn;
1833         OFSTRUCT        *ofs;
1834
1835         pModule = NE_GetPtr( hModule );
1836         if (!pModule) break;
1837         if (!pModule->fileinfo) continue;
1838         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1839
1840         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1841         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1842         /* basename: search backwards in pathname to \ / or : */
1843         while (loadedfn > (char*)ofs->szPathName)
1844         {
1845             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1846                     break;
1847             loadedfn--;
1848         }
1849         /* case insensitive compare ... */
1850         if (!NE_strcasecmp(loadedfn, s))
1851             return hModule;
1852     }
1853     /* If basename (without ext) matches the module name of a module:
1854      * Return its handle.
1855      */
1856
1857     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1858     len = strlen(s);
1859
1860     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1861     {
1862         pModule = NE_GetPtr( hModule );
1863         if (!pModule) break;
1864         if (pModule->ne_flags & NE_FFLAGS_WIN32) continue;
1865
1866         name_table = (BYTE *)pModule + pModule->ne_restab;
1867         if ((*name_table == len) && !NE_strncasecmp(s, (const char*)name_table+1, len))
1868             return hModule;
1869     }
1870
1871     return 0;
1872 }
1873
1874 /***********************************************************************
1875  *           GetProcAddress16   (KERNEL32.37)
1876  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1877  */
1878 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1879 {
1880     if (!hModule) return 0;
1881     if (HIWORD(hModule))
1882     {
1883         WARN("hModule is Win32 handle (%p)\n", hModule );
1884         return 0;
1885     }
1886     return GetProcAddress16( LOWORD(hModule), name );
1887 }
1888
1889 /**********************************************************************
1890  *          ModuleFirst    (TOOLHELP.59)
1891  */
1892 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1893 {
1894     lpme->wNext = hFirstModule;
1895     return ModuleNext16( lpme );
1896 }
1897
1898
1899 /**********************************************************************
1900  *          ModuleNext    (TOOLHELP.60)
1901  */
1902 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1903 {
1904     NE_MODULE *pModule;
1905     char *name;
1906
1907     if (!lpme->wNext) return FALSE;
1908     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1909     name = (char *)pModule + pModule->ne_restab;
1910     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1911     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1912     lpme->hModule = lpme->wNext;
1913     lpme->wcUsage = pModule->count;
1914     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1915     lpme->wNext = pModule->next;
1916     return TRUE;
1917 }
1918
1919
1920 /**********************************************************************
1921  *          ModuleFindName    (TOOLHELP.61)
1922  */
1923 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1924 {
1925     lpme->wNext = GetModuleHandle16( name );
1926     return ModuleNext16( lpme );
1927 }
1928
1929
1930 /**********************************************************************
1931  *          ModuleFindHandle    (TOOLHELP.62)
1932  */
1933 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1934 {
1935     hModule = GetExePtr( hModule );
1936     lpme->wNext = hModule;
1937     return ModuleNext16( lpme );
1938 }
1939
1940
1941 /***************************************************************************
1942  *          IsRomModule    (KERNEL.323)
1943  */
1944 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
1945 {
1946     return FALSE;
1947 }
1948
1949 /***************************************************************************
1950  *          IsRomFile    (KERNEL.326)
1951  */
1952 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
1953 {
1954     return FALSE;
1955 }
1956
1957 /***********************************************************************
1958  *           create_dummy_module
1959  *
1960  * Create a dummy NE module for Win32 or Winelib.
1961  */
1962 static HMODULE16 create_dummy_module( HMODULE module32 )
1963 {
1964     HMODULE16 hModule;
1965     NE_MODULE *pModule;
1966     SEGTABLEENTRY *pSegment;
1967     char *pStr,*s;
1968     unsigned int len;
1969     const char* basename;
1970     OFSTRUCT *ofs;
1971     int of_size, size;
1972     char filename[MAX_PATH];
1973     IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
1974
1975     if (!nt) return ERROR_BAD_FORMAT;
1976
1977     /* Extract base filename */
1978     len = GetModuleFileNameA( module32, filename, sizeof(filename) );
1979     if (!len || len >= sizeof(filename)) return ERROR_BAD_FORMAT;
1980     basename = strrchr(filename, '\\');
1981     if (!basename) basename = filename;
1982     else basename++;
1983     len = strlen(basename);
1984     if ((s = strchr(basename, '.'))) len = s - basename;
1985
1986     /* Allocate module */
1987     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
1988                     + strlen(filename) + 1;
1989     size = sizeof(NE_MODULE) +
1990                  /* loaded file info */
1991                  ((of_size + 3) & ~3) +
1992                  /* segment table: DS,CS */
1993                  2 * sizeof(SEGTABLEENTRY) +
1994                  /* name table */
1995                  len + 2 +
1996                  /* several empty tables */
1997                  8;
1998
1999     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
2000     if (!hModule) return ERROR_BAD_FORMAT;
2001
2002     FarSetOwner16( hModule, hModule );
2003     pModule = (NE_MODULE *)GlobalLock16( hModule );
2004
2005     /* Set all used entries */
2006     pModule->ne_magic         = IMAGE_OS2_SIGNATURE;
2007     pModule->count            = 1;
2008     pModule->next             = 0;
2009     pModule->ne_flags         = NE_FFLAGS_WIN32;
2010     pModule->ne_autodata      = 0;
2011     pModule->ne_sssp          = MAKESEGPTR( 0, 1 );
2012     pModule->ne_csip          = MAKESEGPTR( 0, 2 );
2013     pModule->ne_heap          = 0;
2014     pModule->ne_stack         = 0;
2015     pModule->ne_cseg          = 2;
2016     pModule->ne_cmod          = 0;
2017     pModule->ne_cbnrestab     = 0;
2018     pModule->fileinfo         = sizeof(NE_MODULE);
2019     pModule->ne_exetyp        = NE_OSFLAGS_WINDOWS;
2020     pModule->self             = hModule;
2021     pModule->module32         = module32;
2022
2023     /* Set version and flags */
2024     pModule->ne_expver = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
2025                           (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
2026     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
2027         pModule->ne_flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
2028
2029     /* Set loaded file information */
2030     ofs = (OFSTRUCT *)(pModule + 1);
2031     memset( ofs, 0, of_size );
2032     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
2033     strcpy( ofs->szPathName, filename );
2034
2035     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
2036     pModule->ne_segtab = (char *)pSegment - (char *)pModule;
2037     /* Data segment */
2038     pSegment->size    = 0;
2039     pSegment->flags   = NE_SEGFLAGS_DATA;
2040     pSegment->minsize = 0x1000;
2041     pSegment++;
2042     /* Code segment */
2043     pSegment->flags   = 0;
2044     pSegment++;
2045
2046     /* Module name */
2047     pStr = (char *)pSegment;
2048     pModule->ne_restab = pStr - (char *)pModule;
2049     assert(len<256);
2050     *pStr = len;
2051     lstrcpynA( pStr+1, basename, len+1 );
2052     pStr += len+2;
2053
2054     /* All tables zero terminated */
2055     pModule->ne_rsrctab = pModule->ne_imptab = pModule->ne_enttab = (char *)pStr - (char *)pModule;
2056
2057     NE_RegisterModule( pModule );
2058     pModule->owner32 = LoadLibraryA( filename );  /* increment the ref count of the 32-bit module */
2059     return hModule;
2060 }
2061
2062 /***********************************************************************
2063  *           PrivateLoadLibrary       (KERNEL32.@)
2064  *
2065  * FIXME: rough guesswork, don't know what "Private" means
2066  */
2067 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
2068 {
2069     return LoadLibrary16(libname);
2070 }
2071
2072 /***********************************************************************
2073  *           PrivateFreeLibrary       (KERNEL32.@)
2074  *
2075  * FIXME: rough guesswork, don't know what "Private" means
2076  */
2077 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
2078 {
2079     FreeLibrary16(handle);
2080 }
2081
2082 /***********************************************************************
2083  *           LoadLibrary32        (KERNEL.452)
2084  *           LoadSystemLibrary32  (KERNEL.482)
2085  */
2086 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
2087 {
2088     HMODULE hModule;
2089     DWORD count;
2090
2091     ReleaseThunkLock( &count );
2092     hModule = LoadLibraryA( libname );
2093     RestoreThunkLock( count );
2094     return hModule;
2095 }
2096
2097 /***************************************************************************
2098  *              MapHModuleLS                    (KERNEL32.@)
2099  */
2100 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod)
2101 {
2102     HMODULE16 ret;
2103     NE_MODULE *pModule;
2104
2105     if (!hmod)
2106         return TASK_GetCurrent()->hInstance;
2107     if (!HIWORD(hmod))
2108         return LOWORD(hmod); /* we already have a 16 bit module handle */
2109     pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
2110     while (pModule)  {
2111         if (pModule->module32 == hmod)
2112             return pModule->self;
2113         pModule = (NE_MODULE*)GlobalLock16(pModule->next);
2114     }
2115     if ((ret = create_dummy_module( hmod )) < 32)
2116     {
2117         SetLastError(ret);
2118         ret = 0;
2119     }
2120     return ret;
2121 }
2122
2123 /***************************************************************************
2124  *              MapHModuleSL                    (KERNEL32.@)
2125  */
2126 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod)
2127 {
2128     NE_MODULE *pModule;
2129
2130     if (!hmod) {
2131         TDB *pTask = TASK_GetCurrent();
2132         hmod = pTask->hModule;
2133     }
2134     pModule = (NE_MODULE*)GlobalLock16(hmod);
2135     if ((pModule->ne_magic != IMAGE_OS2_SIGNATURE) || !(pModule->ne_flags & NE_FFLAGS_WIN32))
2136         return 0;
2137     return pModule->module32;
2138 }
2139
2140 /***************************************************************************
2141  *              MapHInstLS                      (KERNEL.472)
2142  */
2143 void WINAPI MapHInstLS16( CONTEXT86 *context )
2144 {
2145     context->Eax = MapHModuleLS( (HMODULE)context->Eax );
2146 }
2147
2148 /***************************************************************************
2149  *              MapHInstSL                      (KERNEL.473)
2150  */
2151 void WINAPI MapHInstSL16( CONTEXT86 *context )
2152 {
2153     context->Eax = (DWORD)MapHModuleSL( context->Eax );
2154 }
2155
2156 #ifdef __i386__
2157
2158 /***************************************************************************
2159  *              MapHInstLS                      (KERNEL32.@)
2160  */
2161 __ASM_GLOBAL_FUNC( MapHInstLS,
2162                    "pushl %eax\n\t"
2163                    "call " __ASM_NAME("MapHModuleLS") "\n\t"
2164                    "ret" );
2165
2166 /***************************************************************************
2167  *              MapHInstSL                      (KERNEL32.@)
2168  */
2169 __ASM_GLOBAL_FUNC( MapHInstSL,
2170                    "pushl %eax\n\t"
2171                    "call " __ASM_NAME("MapHModuleSL") "\n\t"
2172                    "ret" );
2173
2174 /***************************************************************************
2175  *              MapHInstLS_PN                   (KERNEL32.@)
2176  */
2177 __ASM_GLOBAL_FUNC( MapHInstLS_PN,
2178                    "testl %eax,%eax\n\t"
2179                    "jz 1f\n\t"
2180                    "pushl %eax\n\t"
2181                    "call " __ASM_NAME("MapHModuleLS") "\n"
2182                    "1:\tret" );
2183
2184 /***************************************************************************
2185  *              MapHInstSL_PN                   (KERNEL32.@)
2186  */
2187 __ASM_GLOBAL_FUNC( MapHInstSL_PN,
2188                    "andl $0xffff,%eax\n\t"
2189                    "jz 1f\n\t"
2190                    "pushl %eax\n\t"
2191                    "call " __ASM_NAME("MapHModuleSL") "\n"
2192                    "1:\tret" );
2193
2194 #endif  /* __i386__ */