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 "ntstatus.h"
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "wine/winbase16.h"
  39 #include "winerror.h"
  40 #include "wownt32.h"
  41 #include "module.h"
  42 #include "toolhelp.h"
  43 #include "builtin16.h"
  44 #include "stackframe.h"
  45 #include "excpt.h"
  46 #include "kernel_private.h"
  47 #include "wine/unicode.h"
  48 #include "wine/exception.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(module);
  52 WINE_DECLARE_DEBUG_CHANNEL(loaddll);
  53
  54 #include "pshpack1.h"
  55 typedef struct _GPHANDLERDEF
  56 {
  57     WORD selector;
  58     WORD rangeStart;
  59     WORD rangeEnd;
  60     WORD handler;
  61 } GPHANDLERDEF;
  62 #include "poppack.h"
  63
  64 /*
  65  * Segment table entry
  66  */
  67 struct ne_segment_table_entry_s
  68 {
  69     WORD seg_data_offset;   /* Sector offset of segment data    */
  70     WORD seg_data_length;   /* Length of segment data           */
  71     WORD seg_flags;         /* Flags associated with this segment       */
  72     WORD min_alloc;         /* Minimum allocation size for this */
  73 };
  74
  75 #define hFirstModule (pThhook->hExeHead)
  76
  77 typedef struct
  78 {
  79     void       *module_start;      /* 32-bit address of the module data */
  80     int         module_size;       /* Size of the module data */
  81     void       *code_start;        /* 32-bit address of DLL code */
  82     void       *data_start;        /* 32-bit address of DLL data */
  83     const char *owner;             /* 32-bit dll that contains this dll */
  84     const void *rsrc;              /* resources data */
  85 } BUILTIN16_DESCRIPTOR;
  86
  87 /* Table of all built-in DLLs */
  88
  89 #define MAX_DLLS 50
  90
  91 static const BUILTIN16_DESCRIPTOR *builtin_dlls[MAX_DLLS];
  92
  93 extern void SNOOP16_RegisterDLL(NE_MODULE*,LPCSTR);
  94 extern FARPROC16 SNOOP16_GetProcAddress16(HMODULE16,DWORD,FARPROC16);
  95
  96 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only );
  97 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep );
  98
  99 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only );
 100
 101 static HMODULE16 NE_GetModuleByFilename( LPCSTR name );
 102
 103
 104 static WINE_EXCEPTION_FILTER(page_fault)
 105 {
 106     if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ||
 107         GetExceptionCode() == EXCEPTION_PRIV_INSTRUCTION)
 108         return EXCEPTION_EXECUTE_HANDLER;
 109     return EXCEPTION_CONTINUE_SEARCH;
 110 }
 111
 112
 113 /* patch all the flat cs references of the code segment if necessary */
 114 inline static void patch_code_segment( void *code_segment )
 115 {
 116 #ifdef __i386__
 117     CALLFROM16 *call = code_segment;
 118     if (call->flatcs == wine_get_cs()) return;  /* nothing to patch */
 119     while (call->pushl == 0x68)
 120     {
 121         call->flatcs = wine_get_cs();
 122         call++;
 123     }
 124 #endif
 125 }
 126
 127
 128 /***********************************************************************
 129  *              NE_strcasecmp
 130  *
 131  * locale-independent case conversion for module lookups
 132  */
 133 static int NE_strcasecmp( const char *str1, const char *str2 )
 134 {
 135     int ret = 0;
 136     for ( ; ; str1++, str2++)
 137         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 138     return ret;
 139 }
 140
 141
 142 /***********************************************************************
 143  *              NE_strncasecmp
 144  *
 145  * locale-independent case conversion for module lookups
 146  */
 147 static int NE_strncasecmp( const char *str1, const char *str2, int len )
 148 {
 149     int ret = 0;
 150     for ( ; len > 0; len--, str1++, str2++)
 151         if ((ret = RtlUpperChar(*str1) - RtlUpperChar(*str2)) || !*str1) break;
 152     return ret;
 153 }
 154
 155
 156 /***********************************************************************
 157  *           find_dll_descr
 158  *
 159  * Find a descriptor in the list
 160  */
 161 static const BUILTIN16_DESCRIPTOR *find_dll_descr( const char *dllname )
 162 {
 163     int i;
 164     for (i = 0; i < MAX_DLLS; i++)
 165     {
 166         const BUILTIN16_DESCRIPTOR *descr = builtin_dlls[i];
 167         if (descr)
 168         {
 169             NE_MODULE *pModule = (NE_MODULE *)descr->module_start;
 170             OFSTRUCT *pOfs = (OFSTRUCT *)((LPBYTE)pModule + pModule->fileinfo);
 171             BYTE *name_table = (BYTE *)pModule + pModule->name_table;
 172
 173             /* check the dll file name */
 174             if (!NE_strcasecmp( pOfs->szPathName, dllname )) return descr;
 175             /* check the dll module name (without extension) */
 176             if (!NE_strncasecmp( dllname, name_table+1, *name_table ) &&
 177                 !strcmp( dllname + *name_table, ".dll" ))
 178                 return descr;
 179         }
 180     }
 181     return NULL;
 182 }
 183
 184
 185 /***********************************************************************
 186  *           __wine_register_dll_16 (KERNEL32.@)
 187  *
 188  * Register a built-in DLL descriptor.
 189  */
 190 void __wine_register_dll_16( const BUILTIN16_DESCRIPTOR *descr )
 191 {
 192     int i;
 193
 194     for (i = 0; i < MAX_DLLS; i++)
 195     {
 196         if (builtin_dlls[i]) continue;
 197         builtin_dlls[i] = descr;
 198         break;
 199     }
 200     assert( i < MAX_DLLS );
 201 }
 202
 203
 204 /***********************************************************************
 205  *           __wine_unregister_dll_16 (KERNEL32.@)
 206  *
 207  * Unregister a built-in DLL descriptor.
 208  */
 209 void __wine_unregister_dll_16( const BUILTIN16_DESCRIPTOR *descr )
 210 {
 211     int i;
 212
 213     for (i = 0; i < MAX_DLLS; i++)
 214     {
 215         if (builtin_dlls[i] != descr) continue;
 216         builtin_dlls[i] = NULL;
 217         break;
 218     }
 219 }
 220
 221
 222 /***********************************************************************
 223  *           NE_GetPtr
 224  */
 225 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
 226 {
 227     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
 228 }
 229
 230
 231 /**********************************************************************
 232  *           NE_RegisterModule
 233  */
 234 static void NE_RegisterModule( NE_MODULE *pModule )
 235 {
 236     pModule->next = hFirstModule;
 237     hFirstModule = pModule->self;
 238 }
 239
 240
 241 /***********************************************************************
 242  *           NE_DumpModule
 243  */
 244 void NE_DumpModule( HMODULE16 hModule )
 245 {
 246     int i, ordinal;
 247     SEGTABLEENTRY *pSeg;
 248     BYTE *pstr;
 249     WORD *pword;
 250     NE_MODULE *pModule;
 251     ET_BUNDLE *bundle;
 252     ET_ENTRY *entry;
 253
 254     if (!(pModule = NE_GetPtr( hModule )))
 255     {
 256         MESSAGE( "**** %04x is not a module handle\n", hModule );
 257         return;
 258     }
 259
 260       /* Dump the module info */
 261     DPRINTF( "---\n" );
 262     DPRINTF( "Module %04x:\n", hModule );
 263     DPRINTF( "count=%d flags=%04x heap=%d stack=%d\n",
 264              pModule->count, pModule->flags,
 265              pModule->heap_size, pModule->stack_size );
 266     DPRINTF( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
 267              pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
 268              pModule->seg_count, pModule->modref_count );
 269     DPRINTF( "os_flags=%d swap_area=%d version=%04x\n",
 270              pModule->os_flags, pModule->min_swap_area,
 271              pModule->expected_version );
 272     if (pModule->flags & NE_FFLAGS_WIN32)
 273         DPRINTF( "PE module=%p\n", pModule->module32 );
 274
 275       /* Dump the file info */
 276     DPRINTF( "---\n" );
 277     DPRINTF( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
 278
 279       /* Dump the segment table */
 280     DPRINTF( "---\n" );
 281     DPRINTF( "Segment table:\n" );
 282     pSeg = NE_SEG_TABLE( pModule );
 283     for (i = 0; i < pModule->seg_count; i++, pSeg++)
 284         DPRINTF( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
 285                  i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
 286                  pSeg->minsize, pSeg->hSeg );
 287
 288       /* Dump the resource table */
 289     DPRINTF( "---\n" );
 290     DPRINTF( "Resource table:\n" );
 291     if (pModule->res_table)
 292     {
 293         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
 294         DPRINTF( "Alignment: %d\n", *pword++ );
 295         while (*pword)
 296         {
 297             NE_TYPEINFO *ptr = (NE_TYPEINFO *)pword;
 298             NE_NAMEINFO *pname = (NE_NAMEINFO *)(ptr + 1);
 299             DPRINTF( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 300             for (i = 0; i < ptr->count; i++, pname++)
 301                 DPRINTF( "offset=%d len=%d id=%04x\n",
 302                       pname->offset, pname->length, pname->id );
 303             pword = (WORD *)pname;
 304         }
 305     }
 306     else DPRINTF( "None\n" );
 307
 308       /* Dump the resident name table */
 309     DPRINTF( "---\n" );
 310     DPRINTF( "Resident-name table:\n" );
 311     pstr = (char *)pModule + pModule->name_table;
 312     while (*pstr)
 313     {
 314         DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 315                  *(WORD *)(pstr + *pstr + 1) );
 316         pstr += *pstr + 1 + sizeof(WORD);
 317     }
 318
 319       /* Dump the module reference table */
 320     DPRINTF( "---\n" );
 321     DPRINTF( "Module ref table:\n" );
 322     if (pModule->modref_table)
 323     {
 324         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 325         for (i = 0; i < pModule->modref_count; i++, pword++)
 326         {
 327             char name[10];
 328             GetModuleName16( *pword, name, sizeof(name) );
 329             DPRINTF( "%d: %04x -> '%s'\n", i, *pword, name );
 330         }
 331     }
 332     else DPRINTF( "None\n" );
 333
 334       /* Dump the entry table */
 335     DPRINTF( "---\n" );
 336     DPRINTF( "Entry table:\n" );
 337     bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->entry_table);
 338     do {
 339         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 340         DPRINTF( "Bundle %d-%d: %02x\n", bundle->first, bundle->last, entry->type);
 341         ordinal = bundle->first;
 342         while (ordinal < bundle->last)
 343         {
 344             if (entry->type == 0xff)
 345                 DPRINTF("%d: %02x:%04x (moveable)\n", ordinal++, entry->segnum, entry->offs);
 346             else
 347                 DPRINTF("%d: %02x:%04x (fixed)\n", ordinal++, entry->segnum, entry->offs);
 348             entry++;
 349         }
 350     } while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
 351
 352     /* Dump the non-resident names table */
 353     DPRINTF( "---\n" );
 354     DPRINTF( "Non-resident names table:\n" );
 355     if (pModule->nrname_handle)
 356     {
 357         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 358         while (*pstr)
 359         {
 360             DPRINTF( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 361                    *(WORD *)(pstr + *pstr + 1) );
 362             pstr += *pstr + 1 + sizeof(WORD);
 363         }
 364     }
 365     DPRINTF( "\n" );
 366 }
 367
 368
 369 /***********************************************************************
 370  *           NE_WalkModules
 371  *
 372  * Walk the module list and print the modules.
 373  */
 374 void NE_WalkModules(void)
 375 {
 376     HMODULE16 hModule = hFirstModule;
 377     MESSAGE( "Module Flags Name\n" );
 378     while (hModule)
 379     {
 380         NE_MODULE *pModule = NE_GetPtr( hModule );
 381         if (!pModule)
 382         {
 383             MESSAGE( "Bad module %04x in list\n", hModule );
 384             return;
 385         }
 386         MESSAGE( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 387                  *((char *)pModule + pModule->name_table),
 388                  (char *)pModule + pModule->name_table + 1 );
 389         hModule = pModule->next;
 390     }
 391 }
 392
 393
 394 /***********************************************************************
 395  *           NE_InitResourceHandler
 396  *
 397  * Fill in 'resloader' fields in the resource table.
 398  */
 399 static void NE_InitResourceHandler( NE_MODULE *pModule )
 400 {
 401     static FARPROC16 proc;
 402
 403     NE_TYPEINFO *pTypeInfo = (NE_TYPEINFO *)((char *)pModule + pModule->res_table + 2);
 404
 405     TRACE("InitResourceHandler[%04x]\n", pModule->self );
 406
 407     if (!proc) proc = GetProcAddress16( GetModuleHandle16("KERNEL"), "DefResourceHandler" );
 408
 409     while(pTypeInfo->type_id)
 410     {
 411         memcpy_unaligned( &pTypeInfo->resloader, &proc, sizeof(FARPROC16) );
 412         pTypeInfo = (NE_TYPEINFO *)((char*)(pTypeInfo + 1) + pTypeInfo->count * sizeof(NE_NAMEINFO));
 413     }
 414 }
 415
 416
 417 /***********************************************************************
 418  *           NE_GetOrdinal
 419  *
 420  * Lookup the ordinal for a given name.
 421  */
 422 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 423 {
 424     unsigned char buffer[256], *cpnt;
 425     BYTE len;
 426     NE_MODULE *pModule;
 427
 428     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 429     if (pModule->flags & NE_FFLAGS_WIN32) return 0;
 430
 431     TRACE("(%04x,'%s')\n", hModule, name );
 432
 433       /* First handle names of the form '#xxxx' */
 434
 435     if (name[0] == '#') return atoi( name + 1 );
 436
 437       /* Now copy and uppercase the string */
 438
 439     strcpy( buffer, name );
 440     for (cpnt = buffer; *cpnt; cpnt++) *cpnt = RtlUpperChar(*cpnt);
 441     len = cpnt - buffer;
 442
 443       /* First search the resident names */
 444
 445     cpnt = (char *)pModule + pModule->name_table;
 446
 447       /* Skip the first entry (module name) */
 448     cpnt += *cpnt + 1 + sizeof(WORD);
 449     while (*cpnt)
 450     {
 451         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 452         {
 453             WORD ordinal;
 454             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 455             TRACE("  Found: ordinal=%d\n", ordinal );
 456             return ordinal;
 457         }
 458         cpnt += *cpnt + 1 + sizeof(WORD);
 459     }
 460
 461       /* Now search the non-resident names table */
 462
 463     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 464     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 465
 466       /* Skip the first entry (module description string) */
 467     cpnt += *cpnt + 1 + sizeof(WORD);
 468     while (*cpnt)
 469     {
 470         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 471         {
 472             WORD ordinal;
 473             memcpy( &ordinal, cpnt + *cpnt + 1, sizeof(ordinal) );
 474             TRACE("  Found: ordinal=%d\n", ordinal );
 475             return ordinal;
 476         }
 477         cpnt += *cpnt + 1 + sizeof(WORD);
 478     }
 479     return 0;
 480 }
 481
 482
 483 /***********************************************************************
 484  *              NE_GetEntryPoint
 485  */
 486 FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 487 {
 488     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 489 }
 490
 491 /***********************************************************************
 492  *              NE_GetEntryPointEx
 493  */
 494 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 495 {
 496     NE_MODULE *pModule;
 497     WORD sel, offset, i;
 498
 499     ET_ENTRY *entry;
 500     ET_BUNDLE *bundle;
 501
 502     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 503     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 504
 505     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 506     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 507     {
 508         if (!(bundle->next))
 509             return 0;
 510         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 511     }
 512
 513     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 514     for (i=0; i < (ordinal - bundle->first - 1); i++)
 515         entry++;
 516
 517     sel = entry->segnum;
 518     memcpy( &offset, &entry->offs, sizeof(WORD) );
 519
 520     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 521     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 522     if (sel==0xffff)
 523         return (FARPROC16)MAKESEGPTR( sel, offset );
 524     if (!snoop)
 525         return (FARPROC16)MAKESEGPTR( sel, offset );
 526     else
 527         return (FARPROC16)SNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)MAKESEGPTR( sel, offset ));
 528 }
 529
 530
 531 /***********************************************************************
 532  *              EntryAddrProc (KERNEL.667) Wine-specific export
 533  *
 534  * Return the entry point for a given ordinal.
 535  */
 536 FARPROC16 WINAPI EntryAddrProc16( HMODULE16 hModule, WORD ordinal )
 537 {
 538     FARPROC16 ret = NE_GetEntryPointEx( hModule, ordinal, TRUE );
 539     CURRENT_STACK16->ecx = hModule; /* FIXME: might be incorrect value */
 540     return ret;
 541 }
 542
 543 /***********************************************************************
 544  *           NE_SetEntryPoint
 545  *
 546  * Change the value of an entry point. Use with caution!
 547  * It can only change the offset value, not the selector.
 548  */
 549 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 550 {
 551     NE_MODULE *pModule;
 552     ET_ENTRY *entry;
 553     ET_BUNDLE *bundle;
 554     int i;
 555
 556     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 557     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 558
 559     bundle = (ET_BUNDLE *)((BYTE *)pModule + pModule->entry_table);
 560     while ((ordinal < bundle->first + 1) || (ordinal > bundle->last))
 561     {
 562         bundle = (ET_BUNDLE *)((BYTE *)pModule + bundle->next);
 563         if (!(bundle->next)) return 0;
 564     }
 565
 566     entry = (ET_ENTRY *)((BYTE *)bundle+6);
 567     for (i=0; i < (ordinal - bundle->first - 1); i++)
 568         entry++;
 569
 570     memcpy( &entry->offs, &offset, sizeof(WORD) );
 571     return TRUE;
 572 }
 573
 574
 575 /***********************************************************************
 576  *           NE_OpenFile
 577  */
 578 HANDLE NE_OpenFile( NE_MODULE *pModule )
 579 {
 580     HANDLE handle;
 581     char *name = NE_MODULE_NAME( pModule );
 582
 583     TRACE("(%p)\n", pModule );
 584
 585     if (pModule->fd)
 586     {
 587         if (!DuplicateHandle( GetCurrentProcess(), pModule->fd,
 588                               GetCurrentProcess(), &handle, 0, FALSE,
 589                               DUPLICATE_SAME_ACCESS )) handle = INVALID_HANDLE_VALUE;
 590     }
 591     else
 592     {
 593         handle = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 594                               NULL, OPEN_EXISTING, 0, 0 );
 595     }
 596     if (handle == INVALID_HANDLE_VALUE)
 597         ERR( "Can't open file '%s' for module %04x\n", name, pModule->self );
 598
 599     TRACE("opened '%s' -> %p\n", name, handle);
 600     return handle;
 601 }
 602
 603
 604 /* wrapper for SetFilePointer and ReadFile */
 605 static BOOL read_data( HANDLE handle, LONG offset, void *buffer, DWORD size )
 606 {
 607     DWORD result;
 608
 609     if (SetFilePointer( handle, offset, NULL, SEEK_SET ) == INVALID_SET_FILE_POINTER) return FALSE;
 610     if (!ReadFile( handle, buffer, size, &result, NULL )) return FALSE;
 611     return (result == size);
 612 }
 613
 614 /***********************************************************************
 615  *           NE_LoadExeHeader
 616  */
 617 static HMODULE16 NE_LoadExeHeader( HANDLE handle, LPCSTR path )
 618 {
 619     IMAGE_DOS_HEADER mz_header;
 620     IMAGE_OS2_HEADER ne_header;
 621     int size;
 622     HMODULE16 hModule;
 623     NE_MODULE *pModule;
 624     BYTE *pData, *pTempEntryTable;
 625     char *buffer, *fastload = NULL;
 626     unsigned int fastload_offset = 0, fastload_length = 0;
 627     ET_ENTRY *entry;
 628     ET_BUNDLE *bundle, *oldbundle;
 629     OFSTRUCT *ofs;
 630
 631   /* Read a block from either the file or the fast-load area. */
 632 #define READ(offset,size,buffer) \
 633        ((fastload && ((offset) >= fastload_offset) && \
 634          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 635         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 636          read_data( handle, (offset), (buffer), (size)))
 637
 638     if (!read_data( handle, 0, &mz_header, sizeof(mz_header)) ||
 639         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 640         return (HMODULE16)11;  /* invalid exe */
 641
 642     if (!read_data( handle, mz_header.e_lfanew, &ne_header, sizeof(ne_header) ))
 643         return (HMODULE16)11;  /* invalid exe */
 644
 645     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 646     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 647         MESSAGE("Sorry, this is an OS/2 linear executable (LX) file !\n");
 648         return (HMODULE16)12;
 649     }
 650     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 651
 652     /* We now have a valid NE header */
 653
 654     size = sizeof(NE_MODULE) +
 655              /* segment table */
 656            ne_header.ne_cseg * sizeof(SEGTABLEENTRY) +
 657              /* resource table */
 658            ne_header.ne_restab - ne_header.ne_rsrctab +
 659              /* resident names table */
 660            ne_header.ne_modtab - ne_header.ne_restab +
 661              /* module ref table */
 662            ne_header.ne_cmod * sizeof(WORD) +
 663              /* imported names table */
 664            ne_header.ne_enttab - ne_header.ne_imptab +
 665              /* entry table length */
 666            ne_header.ne_cbenttab +
 667              /* entry table extra conversion space */
 668            sizeof(ET_BUNDLE) +
 669            2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6) +
 670              /* loaded file info */
 671            sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 672
 673     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 674     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 675
 676     FarSetOwner16( hModule, hModule );
 677     pModule = (NE_MODULE *)GlobalLock16( hModule );
 678     memcpy( pModule, &ne_header, sizeof(ne_header) );
 679     pModule->count = 0;
 680     /* check *programs* for default minimal stack size */
 681     if ( (!(pModule->flags & NE_FFLAGS_LIBMODULE))
 682          && (pModule->stack_size < 0x1400) )
 683         pModule->stack_size = 0x1400;
 684     pModule->module32 = 0;
 685     pModule->self = hModule;
 686     pModule->self_loading_sel = 0;
 687     pData = (BYTE *)(pModule + 1);
 688
 689     /* Clear internal Wine flags in case they are set in the EXE file */
 690
 691     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 692
 693     /* Read the fast-load area */
 694
 695     if (ne_header.ne_flagsothers & NE_AFLAGS_FASTLOAD)
 696     {
 697         fastload_offset=ne_header.ne_pretthunks << ne_header.ne_align;
 698         fastload_length=ne_header.ne_psegrefbytes << ne_header.ne_align;
 699         TRACE("Using fast-load area offset=%x len=%d\n",
 700                         fastload_offset, fastload_length );
 701         if ((fastload = HeapAlloc( GetProcessHeap(), 0, fastload_length )) != NULL)
 702         {
 703             if (!read_data( handle, fastload_offset, fastload, fastload_length))
 704             {
 705                 HeapFree( GetProcessHeap(), 0, fastload );
 706                 WARN("Error reading fast-load area!\n");
 707                 fastload = NULL;
 708             }
 709         }
 710     }
 711
 712     /* Get the segment table */
 713
 714     pModule->seg_table = pData - (BYTE *)pModule;
 715     buffer = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cseg *
 716                                       sizeof(struct ne_segment_table_entry_s));
 717     if (buffer)
 718     {
 719         int i;
 720         struct ne_segment_table_entry_s *pSeg;
 721
 722         if (!READ( mz_header.e_lfanew + ne_header.ne_segtab,
 723              ne_header.ne_cseg * sizeof(struct ne_segment_table_entry_s),
 724              buffer ))
 725         {
 726             HeapFree( GetProcessHeap(), 0, buffer );
 727             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 728             GlobalFree16( hModule );
 729             return (HMODULE16)11;  /* invalid exe */
 730         }
 731         pSeg = (struct ne_segment_table_entry_s *)buffer;
 732         for (i = ne_header.ne_cseg; i > 0; i--, pSeg++)
 733         {
 734             memcpy( pData, pSeg, sizeof(*pSeg) );
 735             pData += sizeof(SEGTABLEENTRY);
 736         }
 737         HeapFree( GetProcessHeap(), 0, buffer );
 738     }
 739     else
 740     {
 741         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 742         GlobalFree16( hModule );
 743         return (HMODULE16)11;  /* invalid exe */
 744     }
 745
 746     /* Get the resource table */
 747
 748     if (ne_header.ne_rsrctab < ne_header.ne_restab)
 749     {
 750         pModule->res_table = pData - (BYTE *)pModule;
 751         if (!READ(mz_header.e_lfanew + ne_header.ne_rsrctab,
 752                   ne_header.ne_restab - ne_header.ne_rsrctab,
 753                   pData ))
 754             return (HMODULE16)11;  /* invalid exe */
 755         pData += ne_header.ne_restab - ne_header.ne_rsrctab;
 756         NE_InitResourceHandler( pModule );
 757     }
 758     else pModule->res_table = 0;  /* No resource table */
 759
 760     /* Get the resident names table */
 761
 762     pModule->name_table = pData - (BYTE *)pModule;
 763     if (!READ( mz_header.e_lfanew + ne_header.ne_restab,
 764                ne_header.ne_modtab - ne_header.ne_restab,
 765                pData ))
 766     {
 767         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 768         GlobalFree16( hModule );
 769         return (HMODULE16)11;  /* invalid exe */
 770     }
 771     pData += ne_header.ne_modtab - ne_header.ne_restab;
 772
 773     /* Get the module references table */
 774
 775     if (ne_header.ne_cmod > 0)
 776     {
 777         pModule->modref_table = pData - (BYTE *)pModule;
 778         if (!READ( mz_header.e_lfanew + ne_header.ne_modtab,
 779                   ne_header.ne_cmod * sizeof(WORD),
 780                   pData ))
 781         {
 782             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 783             GlobalFree16( hModule );
 784             return (HMODULE16)11;  /* invalid exe */
 785         }
 786         pData += ne_header.ne_cmod * sizeof(WORD);
 787     }
 788     else pModule->modref_table = 0;  /* No module references */
 789
 790     /* Get the imported names table */
 791
 792     pModule->import_table = pData - (BYTE *)pModule;
 793     if (!READ( mz_header.e_lfanew + ne_header.ne_imptab,
 794                ne_header.ne_enttab - ne_header.ne_imptab,
 795                pData ))
 796     {
 797         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 798         GlobalFree16( hModule );
 799         return (HMODULE16)11;  /* invalid exe */
 800     }
 801     pData += ne_header.ne_enttab - ne_header.ne_imptab;
 802
 803     /* Load entry table, convert it to the optimized version used by Windows */
 804
 805     if ((pTempEntryTable = HeapAlloc( GetProcessHeap(), 0, ne_header.ne_cbenttab)) != NULL)
 806     {
 807         BYTE nr_entries, type, *s;
 808
 809         TRACE("Converting entry table.\n");
 810         pModule->entry_table = pData - (BYTE *)pModule;
 811         if (!READ( mz_header.e_lfanew + ne_header.ne_enttab,
 812                    ne_header.ne_cbenttab, pTempEntryTable ))
 813         {
 814             HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 815             if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 816             GlobalFree16( hModule );
 817             return (HMODULE16)11;  /* invalid exe */
 818         }
 819
 820         s = pTempEntryTable;
 821         TRACE("entry table: offs %04x, len %04x, entries %d\n", ne_header.ne_enttab, ne_header.ne_cbenttab, *s);
 822
 823         bundle = (ET_BUNDLE *)pData;
 824         TRACE("first bundle: %p\n", bundle);
 825         memset(bundle, 0, sizeof(ET_BUNDLE)); /* in case no entry table exists */
 826         entry = (ET_ENTRY *)((BYTE *)bundle+6);
 827
 828         while ((nr_entries = *s++))
 829         {
 830             if ((type = *s++))
 831             {
 832                 bundle->last += nr_entries;
 833                 if (type == 0xff)
 834                 while (nr_entries--)
 835                 {
 836                     entry->type   = type;
 837                     entry->flags  = *s++;
 838                     s += 2;
 839                     entry->segnum = *s++;
 840                     entry->offs   = *(WORD *)s; s += 2;
 841                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 842                     entry++;
 843                 }
 844                 else
 845                 while (nr_entries--)
 846                 {
 847                     entry->type   = type;
 848                     entry->flags  = *s++;
 849                     entry->segnum = type;
 850                     entry->offs   = *(WORD *)s; s += 2;
 851                     /*TRACE(module, "entry: %p, type: %d, flags: %d, segnum: %d, offs: %04x\n", entry, entry->type, entry->flags, entry->segnum, entry->offs);*/
 852                     entry++;
 853                 }
 854             }
 855             else
 856             {
 857                 if (bundle->first == bundle->last)
 858                 {
 859                     bundle->first += nr_entries;
 860                     bundle->last += nr_entries;
 861                 }
 862                 else
 863                 {
 864                     oldbundle = bundle;
 865                     oldbundle->next = ((int)entry - (int)pModule);
 866                     bundle = (ET_BUNDLE *)entry;
 867                     TRACE("new bundle: %p\n", bundle);
 868                     bundle->first = bundle->last =
 869                         oldbundle->last + nr_entries;
 870                     bundle->next = 0;
 871                     entry = (ET_ENTRY*)(((BYTE*)entry)+sizeof(ET_BUNDLE));
 872                 }
 873             }
 874         }
 875         HeapFree( GetProcessHeap(), 0, pTempEntryTable );
 876     }
 877     else
 878     {
 879         if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 880         GlobalFree16( hModule );
 881         return (HMODULE16)11;  /* invalid exe */
 882     }
 883
 884     pData += ne_header.ne_cbenttab + sizeof(ET_BUNDLE) +
 885         2 * (ne_header.ne_cbenttab - ne_header.ne_cmovent*6);
 886
 887     if ((DWORD)entry > (DWORD)pData)
 888        ERR("converted entry table bigger than reserved space !!!\nentry: %p, pData: %p. Please report !\n", entry, pData);
 889
 890     /* Store the filename information */
 891
 892     pModule->fileinfo = pData - (BYTE *)pModule;
 893     size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName) + strlen(path) + 1;
 894     ofs = (OFSTRUCT *)pData;
 895     ofs->cBytes = size - 1;
 896     ofs->fFixedDisk = 1;
 897     strcpy( ofs->szPathName, path );
 898     pData += size;
 899
 900     /* Free the fast-load area */
 901
 902 #undef READ
 903     if (fastload) HeapFree( GetProcessHeap(), 0, fastload );
 904
 905     /* Get the non-resident names table */
 906
 907     if (ne_header.ne_cbnrestab)
 908     {
 909         pModule->nrname_handle = GlobalAlloc16( 0, ne_header.ne_cbnrestab );
 910         if (!pModule->nrname_handle)
 911         {
 912             GlobalFree16( hModule );
 913             return (HMODULE16)11;  /* invalid exe */
 914         }
 915         FarSetOwner16( pModule->nrname_handle, hModule );
 916         buffer = GlobalLock16( pModule->nrname_handle );
 917         if (!read_data( handle, ne_header.ne_nrestab, buffer, ne_header.ne_cbnrestab ))
 918         {
 919             GlobalFree16( pModule->nrname_handle );
 920             GlobalFree16( hModule );
 921             return (HMODULE16)11;  /* invalid exe */
 922         }
 923     }
 924     else pModule->nrname_handle = 0;
 925
 926     /* Allocate a segment for the implicitly-loaded DLLs */
 927
 928     if (pModule->modref_count)
 929     {
 930         pModule->dlls_to_init = GlobalAlloc16( GMEM_ZEROINIT,
 931                                                (pModule->modref_count+1)*sizeof(HMODULE16) );
 932         if (!pModule->dlls_to_init)
 933         {
 934             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 935             GlobalFree16( hModule );
 936             return (HMODULE16)11;  /* invalid exe */
 937         }
 938         FarSetOwner16( pModule->dlls_to_init, hModule );
 939     }
 940     else pModule->dlls_to_init = 0;
 941
 942     NE_RegisterModule( pModule );
 943     SNOOP16_RegisterDLL(pModule,path);
 944     return hModule;
 945 }
 946
 947
 948 /***********************************************************************
 949  *           NE_LoadDLLs
 950  *
 951  * Load all DLLs implicitly linked to a module.
 952  */
 953 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 954 {
 955     int i;
 956     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 957     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 958
 959     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 960     {
 961         char buffer[260], *p;
 962         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 963         memcpy( buffer, pstr + 1, *pstr );
 964         *(buffer + *pstr) = 0; /* terminate it */
 965
 966         TRACE("Loading '%s'\n", buffer );
 967         if (!(*pModRef = GetModuleHandle16( buffer )))
 968         {
 969             /* If the DLL is not loaded yet, load it and store */
 970             /* its handle in the list of DLLs to initialize.   */
 971             HMODULE16 hDLL;
 972
 973             /* Append .DLL to name if no extension present */
 974             if (!(p = strrchr( buffer, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
 975                     strcat( buffer, ".DLL" );
 976
 977             if ((hDLL = MODULE_LoadModule16( buffer, TRUE, TRUE )) < 32)
 978             {
 979                 /* FIXME: cleanup what was done */
 980
 981                 MESSAGE( "Could not load '%s' required by '%.*s', error=%d\n",
 982                      buffer, *((BYTE*)pModule + pModule->name_table),
 983                      (char *)pModule + pModule->name_table + 1, hDLL );
 984                 return FALSE;
 985             }
 986             *pModRef = GetExePtr( hDLL );
 987             *pDLLs++ = *pModRef;
 988         }
 989         else  /* Increment the reference count of the DLL */
 990         {
 991             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 992             if (pOldDLL) pOldDLL->count++;
 993         }
 994     }
 995     return TRUE;
 996 }
 997
 998
 999 /**********************************************************************
1000  *          NE_DoLoadModule
1001  *
1002  * Load first instance of NE module from file.
1003  *
1004  * pModule must point to a module structure prepared by NE_LoadExeHeader.
1005  * This routine must never be called twice on a module.
1006  *
1007  */
1008 static HINSTANCE16 NE_DoLoadModule( NE_MODULE *pModule )
1009 {
1010     /* Allocate the segments for this module */
1011
1012     if (!NE_CreateAllSegments( pModule ))
1013         return ERROR_NOT_ENOUGH_MEMORY; /* 8 */
1014
1015     /* Load the referenced DLLs */
1016
1017     if (!NE_LoadDLLs( pModule ))
1018         return ERROR_FILE_NOT_FOUND; /* 2 */
1019
1020     /* Load the segments */
1021
1022     NE_LoadAllSegments( pModule );
1023
1024     /* Make sure the usage count is 1 on the first loading of  */
1025     /* the module, even if it contains circular DLL references */
1026
1027     pModule->count = 1;
1028
1029     return NE_GetInstance( pModule );
1030 }
1031
1032 /**********************************************************************
1033  *          NE_LoadModule
1034  *
1035  * Load first instance of NE module. (Note: caller is responsible for
1036  * ensuring the module isn't already loaded!)
1037  *
1038  * If the module turns out to be an executable module, only a
1039  * handle to a module stub is returned; this needs to be initialized
1040  * by calling NE_DoLoadModule later, in the context of the newly
1041  * created process.
1042  *
1043  * If lib_only is TRUE, however, the module is perforce treated
1044  * like a DLL module, even if it is an executable module.
1045  *
1046  */
1047 static HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL lib_only )
1048 {
1049     NE_MODULE *pModule;
1050     HMODULE16 hModule;
1051     HINSTANCE16 hInstance;
1052     HFILE16 hFile;
1053     OFSTRUCT ofs;
1054     UINT drive_type;
1055
1056     /* Open file */
1057     if ((hFile = OpenFile16( name, &ofs, OF_READ|OF_SHARE_DENY_WRITE )) == HFILE_ERROR16)
1058         return ERROR_FILE_NOT_FOUND;
1059
1060     hModule = NE_LoadExeHeader( DosFileHandleToWin32Handle(hFile), ofs.szPathName );
1061     if (hModule < 32)
1062     {
1063         _lclose16( hFile );
1064         return hModule;
1065     }
1066     pModule = NE_GetPtr( hModule );
1067
1068     drive_type = GetDriveTypeA( ofs.szPathName );
1069     if (drive_type != DRIVE_REMOVABLE && drive_type != DRIVE_CDROM)
1070     {
1071         /* keep the file handle open if not on a removable media */
1072         DuplicateHandle( GetCurrentProcess(), DosFileHandleToWin32Handle(hFile),
1073                          GetCurrentProcess(), &pModule->fd, 0, FALSE,
1074                          DUPLICATE_SAME_ACCESS );
1075     }
1076     _lclose16( hFile );
1077
1078     if ( !lib_only && !( pModule->flags & NE_FFLAGS_LIBMODULE ) )
1079         return hModule;
1080
1081     hInstance = NE_DoLoadModule( pModule );
1082     if ( hInstance < 32 )
1083     {
1084         /* cleanup ... */
1085         NE_FreeModule( hModule, 0 );
1086     }
1087
1088     return hInstance;
1089 }
1090
1091
1092 /***********************************************************************
1093  *           NE_DoLoadBuiltinModule
1094  *
1095  * Load a built-in Win16 module. Helper function for NE_LoadBuiltinModule.
1096  */
1097 static HMODULE16 NE_DoLoadBuiltinModule( const BUILTIN16_DESCRIPTOR *descr )
1098 {
1099     NE_MODULE *pModule;
1100     int minsize;
1101     SEGTABLEENTRY *pSegTable;
1102     HMODULE16 hModule;
1103
1104     hModule = GLOBAL_CreateBlock( GMEM_MOVEABLE, descr->module_start,
1105                                   descr->module_size, 0, WINE_LDT_FLAGS_DATA );
1106     if (!hModule) return ERROR_NOT_ENOUGH_MEMORY;
1107     FarSetOwner16( hModule, hModule );
1108
1109     pModule = (NE_MODULE *)GlobalLock16( hModule );
1110     pModule->self = hModule;
1111     /* NOTE: (Ab)use the hRsrcMap parameter for resource data pointer */
1112     pModule->hRsrcMap = (void *)descr->rsrc;
1113
1114     /* Allocate the code segment */
1115
1116     pSegTable = NE_SEG_TABLE( pModule );
1117     pSegTable->hSeg = GLOBAL_CreateBlock( GMEM_FIXED, descr->code_start,
1118                                           pSegTable->minsize, hModule,
1119                                           WINE_LDT_FLAGS_CODE|WINE_LDT_FLAGS_32BIT );
1120     if (!pSegTable->hSeg) return ERROR_NOT_ENOUGH_MEMORY;
1121     patch_code_segment( descr->code_start );
1122     pSegTable++;
1123
1124     /* Allocate the data segment */
1125
1126     minsize = pSegTable->minsize ? pSegTable->minsize : 0x10000;
1127     minsize += pModule->heap_size;
1128     if (minsize > 0x10000) minsize = 0x10000;
1129     pSegTable->hSeg = GlobalAlloc16( GMEM_FIXED, minsize );
1130     if (!pSegTable->hSeg) return ERROR_NOT_ENOUGH_MEMORY;
1131     FarSetOwner16( pSegTable->hSeg, hModule );
1132     if (pSegTable->minsize) memcpy( GlobalLock16( pSegTable->hSeg ),
1133                                     descr->data_start, pSegTable->minsize);
1134     if (pModule->heap_size)
1135         LocalInit16( GlobalHandleToSel16(pSegTable->hSeg), pSegTable->minsize, minsize );
1136
1137     if (descr->rsrc) NE_InitResourceHandler(pModule);
1138
1139     NE_RegisterModule( pModule );
1140
1141     return hModule;
1142 }
1143
1144
1145 /**********************************************************************
1146  *          MODULE_LoadModule16
1147  *
1148  * Load a NE module in the order of the loadorder specification.
1149  * The caller is responsible that the module is not loaded already.
1150  *
1151  */
1152 static HINSTANCE16 MODULE_LoadModule16( LPCSTR libname, BOOL implicit, BOOL lib_only )
1153 {
1154     HINSTANCE16 hinst = 2;
1155     HMODULE16 hModule;
1156     NE_MODULE *pModule;
1157     const BUILTIN16_DESCRIPTOR *descr = NULL;
1158     char dllname[20], owner[20], *p;
1159     const char *basename;
1160
1161     /* strip path information */
1162
1163     basename = libname;
1164     if (basename[0] && basename[1] == ':') basename += 2;  /* strip drive specification */
1165     if ((p = strrchr( basename, '\\' ))) basename = p + 1;
1166     if ((p = strrchr( basename, '/' ))) basename = p + 1;
1167
1168     if (strlen(basename) < sizeof(dllname)-4)
1169     {
1170         int file_exists;
1171
1172         strcpy( dllname, basename );
1173         p = strrchr( dllname, '.' );
1174         if (!p) strcat( dllname, ".dll" );
1175         for (p = dllname; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
1176
1177         if (wine_dll_get_owner( dllname, owner, sizeof(owner), &file_exists ) == -1)
1178         {
1179             if (file_exists) return 21;  /* it may be a Win32 module then */
1180         }
1181         else  /* found 32-bit owner, try to load it */
1182         {
1183             HMODULE mod32 = LoadLibraryA( owner );
1184             if (mod32)
1185             {
1186                 if (!(descr = find_dll_descr( dllname ))) FreeLibrary( mod32 );
1187                 /* loading the 32-bit library can have the side effect of loading the module */
1188                 /* if so, simply incr the ref count and return the module */
1189                 if ((hModule = GetModuleHandle16( libname )))
1190                 {
1191                     TRACE( "module %s already loaded by owner\n", libname );
1192                     pModule = NE_GetPtr( hModule );
1193                     if (pModule) pModule->count++;
1194                     return hModule;
1195                 }
1196             }
1197             else
1198             {
1199                 /* it's probably disabled by the load order config */
1200                 WARN( "couldn't load owner %s for 16-bit dll %s\n", owner, dllname );
1201                 return ERROR_FILE_NOT_FOUND;
1202             }
1203         }
1204     }
1205
1206     if (descr)
1207     {
1208         TRACE("Trying built-in '%s'\n", libname);
1209         hinst = NE_DoLoadBuiltinModule( descr );
1210         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : builtin\n", debugstr_a(libname));
1211     }
1212     else
1213     {
1214         TRACE("Trying native dll '%s'\n", libname);
1215         hinst = NE_LoadModule(libname, lib_only);
1216         if (hinst > 32) TRACE_(loaddll)("Loaded module %s : native\n", debugstr_a(libname));
1217     }
1218
1219     if (hinst > 32 && !implicit)
1220     {
1221         hModule = GetModuleHandle16(libname);
1222         if(!hModule)
1223         {
1224             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get module handle. Filename too long ?\n",
1225                 libname, hinst);
1226             return ERROR_INVALID_HANDLE;
1227         }
1228
1229         pModule = NE_GetPtr(hModule);
1230         if(!pModule)
1231         {
1232             ERR("Serious trouble. Just loaded module '%s' (hinst=0x%04x), but can't get NE_MODULE pointer\n",
1233                 libname, hinst);
1234             return ERROR_INVALID_HANDLE;
1235         }
1236
1237         TRACE("Loaded module '%s' at 0x%04x.\n", libname, hinst);
1238
1239         /*
1240          * Call initialization routines for all loaded DLLs. Note that
1241          * when we load implicitly linked DLLs this will be done by InitTask().
1242          */
1243         if(pModule->flags & NE_FFLAGS_LIBMODULE)
1244         {
1245             NE_InitializeDLLs(hModule);
1246             NE_DllProcessAttach(hModule);
1247         }
1248     }
1249     return hinst;       /* The last error that occurred */
1250 }
1251
1252
1253 /**********************************************************************
1254  *          NE_CreateThread
1255  *
1256  * Create the thread for a 16-bit module.
1257  */
1258 static HINSTANCE16 NE_CreateThread( NE_MODULE *pModule, WORD cmdShow, LPCSTR cmdline )
1259 {
1260     HANDLE hThread;
1261     TDB *pTask;
1262     HTASK16 hTask;
1263     HINSTANCE16 instance = 0;
1264
1265     if (!(hTask = TASK_SpawnTask( pModule, cmdShow, cmdline + 1, *cmdline, &hThread )))
1266         return 0;
1267
1268     /* Post event to start the task */
1269     PostEvent16( hTask );
1270
1271     /* Wait until we get the instance handle */
1272     do
1273     {
1274         DirectedYield16( hTask );
1275         if (!IsTask16( hTask ))  /* thread has died */
1276         {
1277             DWORD exit_code;
1278             WaitForSingleObject( hThread, INFINITE );
1279             GetExitCodeThread( hThread, &exit_code );
1280             CloseHandle( hThread );
1281             return exit_code;
1282         }
1283         if (!(pTask = GlobalLock16( hTask ))) break;
1284         instance = pTask->hInstance;
1285         GlobalUnlock16( hTask );
1286     } while (!instance);
1287
1288     CloseHandle( hThread );
1289     return instance;
1290 }
1291
1292
1293 /**********************************************************************
1294  *          LoadModule      (KERNEL.45)
1295  */
1296 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
1297 {
1298     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
1299     LOADPARAMS16 *params;
1300     HMODULE16 hModule;
1301     NE_MODULE *pModule;
1302     LPSTR cmdline;
1303     WORD cmdShow;
1304
1305     /* Load module */
1306
1307     if ( (hModule = NE_GetModuleByFilename(name) ) != 0 )
1308     {
1309         /* Special case: second instance of an already loaded NE module */
1310
1311         if ( !( pModule = NE_GetPtr( hModule ) ) ) return (HINSTANCE16)11;
1312         if ( pModule->module32 ) return (HINSTANCE16)21;
1313
1314         /* Increment refcount */
1315
1316         pModule->count++;
1317     }
1318     else
1319     {
1320         /* Main case: load first instance of NE module */
1321
1322         if ( (hModule = MODULE_LoadModule16( name, FALSE, lib_only )) < 32 )
1323             return hModule;
1324
1325         if ( !(pModule = NE_GetPtr( hModule )) )
1326             return (HINSTANCE16)11;
1327     }
1328
1329     /* If library module, we just retrieve the instance handle */
1330
1331     if ( ( pModule->flags & NE_FFLAGS_LIBMODULE ) || lib_only )
1332         return NE_GetInstance( pModule );
1333
1334     /*
1335      *  At this point, we need to create a new process.
1336      *
1337      *  pModule points either to an already loaded module, whose refcount
1338      *  has already been incremented (to avoid having the module vanish
1339      *  in the meantime), or else to a stub module which contains only header
1340      *  information.
1341      */
1342     params = (LOADPARAMS16 *)paramBlock;
1343     cmdShow = ((WORD *)MapSL(params->showCmd))[1];
1344     cmdline = MapSL( params->cmdLine );
1345     return NE_CreateThread( pModule, cmdShow, cmdline );
1346 }
1347
1348
1349 /**********************************************************************
1350  *          NE_StartTask
1351  *
1352  * Startup code for a new 16-bit task.
1353  */
1354 DWORD NE_StartTask(void)
1355 {
1356     TDB *pTask = TASK_GetCurrent();
1357     NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
1358     HINSTANCE16 hInstance, hPrevInstance;
1359     SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
1360     WORD sp;
1361
1362     if ( pModule->count > 0 )
1363     {
1364         /* Second instance of an already loaded NE module */
1365         /* Note that the refcount was already incremented by the parent */
1366
1367         hPrevInstance = NE_GetInstance( pModule );
1368
1369         if ( pModule->dgroup )
1370             if ( NE_CreateSegment( pModule, pModule->dgroup ) )
1371                 NE_LoadSegment( pModule, pModule->dgroup );
1372
1373         hInstance = NE_GetInstance( pModule );
1374         TRACE("created second instance %04x[%d] of instance %04x.\n", hInstance, pModule->dgroup, hPrevInstance);
1375
1376     }
1377     else
1378     {
1379         /* Load first instance of NE module */
1380
1381         pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1382
1383         hInstance = NE_DoLoadModule( pModule );
1384         hPrevInstance = 0;
1385     }
1386
1387     if ( hInstance >= 32 )
1388     {
1389         CONTEXT86 context;
1390
1391         /* Enter instance handles into task struct */
1392
1393         pTask->hInstance = hInstance;
1394         pTask->hPrevInstance = hPrevInstance;
1395
1396         /* Use DGROUP for 16-bit stack */
1397
1398         if (!(sp = pModule->sp))
1399             sp = pSegTable[pModule->ss-1].minsize + pModule->stack_size;
1400         sp &= ~1;
1401         sp -= sizeof(STACK16FRAME);
1402         NtCurrentTeb()->cur_stack = MAKESEGPTR( GlobalHandleToSel16(hInstance), sp );
1403
1404         /* Registers at initialization must be:
1405          * ax   zero
1406          * bx   stack size in bytes
1407          * cx   heap size in bytes
1408          * si   previous app instance
1409          * di   current app instance
1410          * bp   zero
1411          * es   selector to the PSP
1412          * ds   dgroup of the application
1413          * ss   stack selector
1414          * sp   top of the stack
1415          */
1416         memset( &context, 0, sizeof(context) );
1417         context.SegCs  = GlobalHandleToSel16(pSegTable[pModule->cs - 1].hSeg);
1418         context.SegDs  = GlobalHandleToSel16(pTask->hInstance);
1419         context.SegEs  = pTask->hPDB;
1420         context.SegFs  = wine_get_fs();
1421         context.SegGs  = wine_get_gs();
1422         context.Eip    = pModule->ip;
1423         context.Ebx    = pModule->stack_size;
1424         context.Ecx    = pModule->heap_size;
1425         context.Edi    = pTask->hInstance;
1426         context.Esi    = pTask->hPrevInstance;
1427
1428         /* Now call 16-bit entry point */
1429
1430         TRACE("Starting main program: cs:ip=%04lx:%04lx ds=%04lx ss:sp=%04x:%04x\n",
1431               context.SegCs, context.Eip, context.SegDs,
1432               SELECTOROF(NtCurrentTeb()->cur_stack),
1433               OFFSETOF(NtCurrentTeb()->cur_stack) );
1434
1435         WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
1436         ExitThread( LOWORD(context.Eax) );
1437     }
1438     return hInstance;  /* error code */
1439 }
1440
1441 /***********************************************************************
1442  *           LoadLibrary     (KERNEL.95)
1443  *           LoadLibrary16   (KERNEL32.35)
1444  */
1445 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1446 {
1447     return LoadModule16(libname, (LPVOID)-1 );
1448 }
1449
1450
1451 /**********************************************************************
1452  *          MODULE_CallWEP
1453  *
1454  * Call a DLL's WEP, allowing it to shut down.
1455  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1456  */
1457 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1458 {
1459     BOOL16 ret;
1460     FARPROC16 WEP = GetProcAddress16( hModule, "WEP" );
1461     if (!WEP) return FALSE;
1462
1463     __TRY
1464     {
1465         WORD args[1];
1466         DWORD dwRet;
1467
1468         args[0] = WEP_FREE_DLL;
1469         WOWCallback16Ex( (DWORD)WEP, WCB16_PASCAL, sizeof(args), args, &dwRet );
1470         ret = LOWORD(dwRet);
1471     }
1472     __EXCEPT(page_fault)
1473     {
1474         WARN("Page fault\n");
1475         ret = 0;
1476     }
1477     __ENDTRY
1478
1479     return ret;
1480 }
1481
1482
1483 /**********************************************************************
1484  *          NE_FreeModule
1485  *
1486  * Implementation of FreeModule16().
1487  */
1488 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1489 {
1490     HMODULE16 *hPrevModule;
1491     NE_MODULE *pModule;
1492     HMODULE16 *pModRef;
1493     int i;
1494
1495     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1496     hModule = pModule->self;
1497
1498     TRACE("%04x count %d\n", hModule, pModule->count );
1499
1500     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1501     else pModule->count = 0;
1502
1503     if (pModule->flags & NE_FFLAGS_BUILTIN)
1504         return FALSE;  /* Can't free built-in module */
1505
1506     if (call_wep && !(pModule->flags & NE_FFLAGS_WIN32))
1507     {
1508         /* Free the objects owned by the DLL module */
1509         NE_CallUserSignalProc( hModule, USIG16_DLL_UNLOAD );
1510
1511         if (pModule->flags & NE_FFLAGS_LIBMODULE)
1512             MODULE_CallWEP( hModule );
1513         else
1514             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1515     }
1516
1517
1518     /* Clear magic number just in case */
1519
1520     pModule->magic = pModule->self = 0;
1521     if (pModule->fd) CloseHandle( pModule->fd );
1522
1523       /* Remove it from the linked list */
1524
1525     hPrevModule = &hFirstModule;
1526     while (*hPrevModule && (*hPrevModule != hModule))
1527     {
1528         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1529     }
1530     if (*hPrevModule) *hPrevModule = pModule->next;
1531
1532     /* Free the referenced modules */
1533
1534     pModRef = (HMODULE16*)((char *)pModule + pModule->modref_table);
1535     for (i = 0; i < pModule->modref_count; i++, pModRef++)
1536     {
1537         NE_FreeModule( *pModRef, call_wep );
1538     }
1539
1540     /* Free the module storage */
1541
1542     GlobalFreeAll16( hModule );
1543     return TRUE;
1544 }
1545
1546
1547 /**********************************************************************
1548  *          FreeModule    (KERNEL.46)
1549  */
1550 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1551 {
1552     return NE_FreeModule( hModule, TRUE );
1553 }
1554
1555
1556 /***********************************************************************
1557  *           FreeLibrary     (KERNEL.96)
1558  *           FreeLibrary16   (KERNEL32.36)
1559  */
1560 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1561 {
1562     TRACE("%04x\n", handle );
1563     FreeModule16( handle );
1564 }
1565
1566
1567 /***********************************************************************
1568  *          GetModuleHandle16 (KERNEL32.@)
1569  */
1570 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1571 {
1572     HMODULE16   hModule = hFirstModule;
1573     LPSTR       s;
1574     BYTE        len, *name_table;
1575     char        tmpstr[MAX_PATH];
1576     NE_MODULE *pModule;
1577
1578     TRACE("(%s)\n", name);
1579
1580     if (!HIWORD(name)) return GetExePtr(LOWORD(name));
1581
1582     len = strlen(name);
1583     if (!len) return 0;
1584
1585     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1586
1587     /* If 'name' matches exactly the module name of a module:
1588      * Return its handle.
1589      */
1590     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1591     {
1592         pModule = NE_GetPtr( hModule );
1593         if (!pModule) break;
1594         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1595
1596         name_table = (BYTE *)pModule + pModule->name_table;
1597         if ((*name_table == len) && !strncmp(name, name_table+1, len))
1598             return hModule;
1599     }
1600
1601     /* If uppercased 'name' matches exactly the module name of a module:
1602      * Return its handle
1603      */
1604     for (s = tmpstr; *s; s++) *s = RtlUpperChar(*s);
1605
1606     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1607     {
1608         pModule = NE_GetPtr( hModule );
1609         if (!pModule) break;
1610         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1611
1612         name_table = (BYTE *)pModule + pModule->name_table;
1613         /* FIXME: the strncasecmp is WRONG. It should not be case insensitive,
1614          * but case sensitive! (Unfortunately Winword 6 and subdlls have
1615          * lowercased module names, but try to load uppercase DLLs, so this
1616          * 'i' compare is just a quickfix until the loader handles that
1617          * correctly. -MM 990705
1618          */
1619         if ((*name_table == len) && !NE_strncasecmp(tmpstr, name_table+1, len))
1620             return hModule;
1621     }
1622
1623     /* If the base filename of 'name' matches the base filename of the module
1624      * filename of some module (case-insensitive compare):
1625      * Return its handle.
1626      */
1627
1628     /* basename: search backwards in passed name to \ / or : */
1629     s = tmpstr + strlen(tmpstr);
1630     while (s > tmpstr)
1631     {
1632         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1633                 break;
1634         s--;
1635     }
1636
1637     /* search this in loaded filename list */
1638     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1639     {
1640         char            *loadedfn;
1641         OFSTRUCT        *ofs;
1642
1643         pModule = NE_GetPtr( hModule );
1644         if (!pModule) break;
1645         if (!pModule->fileinfo) continue;
1646         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1647
1648         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1649         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1650         /* basename: search backwards in pathname to \ / or : */
1651         while (loadedfn > (char*)ofs->szPathName)
1652         {
1653             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1654                     break;
1655             loadedfn--;
1656         }
1657         /* case insensitive compare ... */
1658         if (!NE_strcasecmp(loadedfn, s))
1659             return hModule;
1660     }
1661     return 0;
1662 }
1663
1664
1665 /**********************************************************************
1666  *          GetModuleName    (KERNEL.27)
1667  */
1668 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1669 {
1670     NE_MODULE *pModule;
1671     BYTE *p;
1672
1673     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1674     p = (BYTE *)pModule + pModule->name_table;
1675     if (count > *p) count = *p + 1;
1676     if (count > 0)
1677     {
1678         memcpy( buf, p + 1, count - 1 );
1679         buf[count-1] = '\0';
1680     }
1681     return TRUE;
1682 }
1683
1684
1685 /**********************************************************************
1686  *          GetModuleFileName      (KERNEL.49)
1687  *
1688  * Comment: see GetModuleFileNameA
1689  *
1690  * Even if invoked by second instance of a program,
1691  * it still returns path of first one.
1692  */
1693 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1694                                   INT16 nSize )
1695 {
1696     NE_MODULE *pModule;
1697
1698     /* Win95 does not query hModule if set to 0 !
1699      * Is this wrong or maybe Win3.1 only ? */
1700     if (!hModule) hModule = GetCurrentTask();
1701
1702     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1703     lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1704     if (pModule->expected_version >= 0x400)
1705         GetLongPathNameA(NE_MODULE_NAME(pModule), lpFileName, nSize);
1706     TRACE("%04x -> '%s'\n", hModule, lpFileName );
1707     return strlen(lpFileName);
1708 }
1709
1710
1711 /**********************************************************************
1712  *          GetModuleUsage    (KERNEL.48)
1713  */
1714 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1715 {
1716     NE_MODULE *pModule = NE_GetPtr( hModule );
1717     return pModule ? pModule->count : 0;
1718 }
1719
1720
1721 /**********************************************************************
1722  *          GetExpWinVer    (KERNEL.167)
1723  */
1724 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1725 {
1726     NE_MODULE *pModule = NE_GetPtr( hModule );
1727     if ( !pModule ) return 0;
1728
1729     /*
1730      * For built-in modules, fake the expected version the module should
1731      * have according to the Windows version emulated by Wine
1732      */
1733     if ( !pModule->expected_version )
1734     {
1735         OSVERSIONINFOA versionInfo;
1736         versionInfo.dwOSVersionInfoSize = sizeof(versionInfo);
1737
1738         if ( GetVersionExA( &versionInfo ) )
1739             pModule->expected_version =
1740                      (versionInfo.dwMajorVersion & 0xff) << 8
1741                    | (versionInfo.dwMinorVersion & 0xff);
1742     }
1743
1744     return pModule->expected_version;
1745 }
1746
1747
1748 /***********************************************************************
1749  *           WinExec     (KERNEL.166)
1750  */
1751 HINSTANCE16 WINAPI WinExec16( LPCSTR lpCmdLine, UINT16 nCmdShow )
1752 {
1753     LPCSTR p, args = NULL;
1754     LPCSTR name_beg, name_end;
1755     LPSTR name, cmdline;
1756     int arglen;
1757     HINSTANCE16 ret;
1758     char buffer[MAX_PATH];
1759
1760     if (*lpCmdLine == '"') /* has to be only one and only at beginning ! */
1761     {
1762         name_beg = lpCmdLine+1;
1763         p = strchr ( lpCmdLine+1, '"' );
1764         if (p)
1765         {
1766             name_end = p;
1767             args = strchr ( p, ' ' );
1768         }
1769         else /* yes, even valid with trailing '"' missing */
1770             name_end = lpCmdLine+strlen(lpCmdLine);
1771     }
1772     else
1773     {
1774         name_beg = lpCmdLine;
1775         args = strchr( lpCmdLine, ' ' );
1776         name_end = args ? args : lpCmdLine+strlen(lpCmdLine);
1777     }
1778
1779     if ((name_beg == lpCmdLine) && (!args))
1780     { /* just use the original cmdline string as file name */
1781         name = (LPSTR)lpCmdLine;
1782     }
1783     else
1784     {
1785         if (!(name = HeapAlloc( GetProcessHeap(), 0, name_end - name_beg + 1 )))
1786             return ERROR_NOT_ENOUGH_MEMORY;
1787         memcpy( name, name_beg, name_end - name_beg );
1788         name[name_end - name_beg] = '\0';
1789     }
1790
1791     if (args)
1792     {
1793         args++;
1794         arglen = strlen(args);
1795         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 + arglen );
1796         cmdline[0] = (BYTE)arglen;
1797         strcpy( cmdline + 1, args );
1798     }
1799     else
1800     {
1801         cmdline = HeapAlloc( GetProcessHeap(), 0, 2 );
1802         cmdline[0] = cmdline[1] = 0;
1803     }
1804
1805     TRACE("name: '%s', cmdline: '%.*s'\n", name, cmdline[0], &cmdline[1]);
1806
1807     if (SearchPathA( NULL, name, ".exe", sizeof(buffer), buffer, NULL ))
1808     {
1809         LOADPARAMS16 params;
1810         WORD showCmd[2];
1811         showCmd[0] = 2;
1812         showCmd[1] = nCmdShow;
1813
1814         params.hEnvironment = 0;
1815         params.cmdLine = MapLS( cmdline );
1816         params.showCmd = MapLS( showCmd );
1817         params.reserved = 0;
1818
1819         ret = LoadModule16( buffer, &params );
1820         UnMapLS( params.cmdLine );
1821         UnMapLS( params.showCmd );
1822     }
1823     else ret = GetLastError();
1824
1825     HeapFree( GetProcessHeap(), 0, cmdline );
1826     if (name != lpCmdLine) HeapFree( GetProcessHeap(), 0, name );
1827
1828     if (ret == 21)  /* 32-bit module */
1829     {
1830         DWORD count;
1831         ReleaseThunkLock( &count );
1832         ret = LOWORD( WinExec( lpCmdLine, nCmdShow ) );
1833         RestoreThunkLock( count );
1834     }
1835     return ret;
1836 }
1837
1838 /***********************************************************************
1839  *           GetProcAddress   (KERNEL.50)
1840  */
1841 FARPROC16 WINAPI GetProcAddress16( HMODULE16 hModule, LPCSTR name )
1842 {
1843     WORD ordinal;
1844     FARPROC16 ret;
1845
1846     if (!hModule) hModule = GetCurrentTask();
1847     hModule = GetExePtr( hModule );
1848
1849     if (HIWORD(name) != 0)
1850     {
1851         ordinal = NE_GetOrdinal( hModule, name );
1852         TRACE("%04x '%s'\n", hModule, name );
1853     }
1854     else
1855     {
1856         ordinal = LOWORD(name);
1857         TRACE("%04x %04x\n", hModule, ordinal );
1858     }
1859     if (!ordinal) return (FARPROC16)0;
1860
1861     ret = NE_GetEntryPoint( hModule, ordinal );
1862
1863     TRACE("returning %08x\n", (UINT)ret );
1864     return ret;
1865 }
1866
1867
1868 /***************************************************************************
1869  *              HasGPHandler                    (KERNEL.338)
1870  */
1871 SEGPTR WINAPI HasGPHandler16( SEGPTR address )
1872 {
1873     HMODULE16 hModule;
1874     int gpOrdinal;
1875     SEGPTR gpPtr;
1876     GPHANDLERDEF *gpHandler;
1877
1878     if (    (hModule = FarGetOwner16( SELECTOROF(address) )) != 0
1879          && (gpOrdinal = NE_GetOrdinal( hModule, "__GP" )) != 0
1880          && (gpPtr = (SEGPTR)NE_GetEntryPointEx( hModule, gpOrdinal, FALSE )) != 0
1881          && !IsBadReadPtr16( gpPtr, sizeof(GPHANDLERDEF) )
1882          && (gpHandler = MapSL( gpPtr )) != NULL )
1883     {
1884         while (gpHandler->selector)
1885         {
1886             if (    SELECTOROF(address) == gpHandler->selector
1887                  && OFFSETOF(address)   >= gpHandler->rangeStart
1888                  && OFFSETOF(address)   <  gpHandler->rangeEnd  )
1889                 return MAKESEGPTR( gpHandler->selector, gpHandler->handler );
1890             gpHandler++;
1891         }
1892     }
1893
1894     return 0;
1895 }
1896
1897
1898 /**********************************************************************
1899  *          GetModuleHandle    (KERNEL.47)
1900  *
1901  * Find a module from a module name.
1902  *
1903  * NOTE: The current implementation works the same way the Windows 95 one
1904  *       does. Do not try to 'fix' it, fix the callers.
1905  *       + It does not do ANY extension handling (except that strange .EXE bit)!
1906  *       + It does not care about paths, just about basenames. (same as Windows)
1907  *
1908  * RETURNS
1909  *   LOWORD:
1910  *      the win16 module handle if found
1911  *      0 if not
1912  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1913  *      Always hFirstModule
1914  */
1915 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1916 {
1917     if (HIWORD(name) == 0)
1918         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1919     return MAKELONG(GetModuleHandle16( MapSL(name)), hFirstModule );
1920 }
1921
1922 /**********************************************************************
1923  *          NE_GetModuleByFilename
1924  */
1925 static HMODULE16 NE_GetModuleByFilename( LPCSTR name )
1926 {
1927     HMODULE16   hModule;
1928     LPSTR       s, p;
1929     BYTE        len, *name_table;
1930     char        tmpstr[MAX_PATH];
1931     NE_MODULE *pModule;
1932
1933     lstrcpynA(tmpstr, name, sizeof(tmpstr));
1934
1935     /* If the base filename of 'name' matches the base filename of the module
1936      * filename of some module (case-insensitive compare):
1937      * Return its handle.
1938      */
1939
1940     /* basename: search backwards in passed name to \ / or : */
1941     s = tmpstr + strlen(tmpstr);
1942     while (s > tmpstr)
1943     {
1944         if (s[-1]=='/' || s[-1]=='\\' || s[-1]==':')
1945                 break;
1946         s--;
1947     }
1948
1949     /* search this in loaded filename list */
1950     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1951     {
1952         char            *loadedfn;
1953         OFSTRUCT        *ofs;
1954
1955         pModule = NE_GetPtr( hModule );
1956         if (!pModule) break;
1957         if (!pModule->fileinfo) continue;
1958         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1959
1960         ofs = (OFSTRUCT*)((BYTE *)pModule + pModule->fileinfo);
1961         loadedfn = ((char*)ofs->szPathName) + strlen(ofs->szPathName);
1962         /* basename: search backwards in pathname to \ / or : */
1963         while (loadedfn > (char*)ofs->szPathName)
1964         {
1965             if (loadedfn[-1]=='/' || loadedfn[-1]=='\\' || loadedfn[-1]==':')
1966                     break;
1967             loadedfn--;
1968         }
1969         /* case insensitive compare ... */
1970         if (!NE_strcasecmp(loadedfn, s))
1971             return hModule;
1972     }
1973     /* If basename (without ext) matches the module name of a module:
1974      * Return its handle.
1975      */
1976
1977     if ( (p = strrchr( s, '.' )) != NULL ) *p = '\0';
1978     len = strlen(s);
1979
1980     for (hModule = hFirstModule; hModule ; hModule = pModule->next)
1981     {
1982         pModule = NE_GetPtr( hModule );
1983         if (!pModule) break;
1984         if (pModule->flags & NE_FFLAGS_WIN32) continue;
1985
1986         name_table = (BYTE *)pModule + pModule->name_table;
1987         if ((*name_table == len) && !NE_strncasecmp(s, name_table+1, len))
1988             return hModule;
1989     }
1990
1991     return 0;
1992 }
1993
1994 /***********************************************************************
1995  *           GetProcAddress16   (KERNEL32.37)
1996  * Get procaddress in 16bit module from win32... (kernel32 undoc. ordinal func)
1997  */
1998 FARPROC16 WINAPI WIN32_GetProcAddress16( HMODULE hModule, LPCSTR name )
1999 {
2000     if (!hModule) return 0;
2001     if (HIWORD(hModule))
2002     {
2003         WARN("hModule is Win32 handle (%p)\n", hModule );
2004         return 0;
2005     }
2006     return GetProcAddress16( LOWORD(hModule), name );
2007 }
2008
2009 /**********************************************************************
2010  *          ModuleFirst    (TOOLHELP.59)
2011  */
2012 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
2013 {
2014     lpme->wNext = hFirstModule;
2015     return ModuleNext16( lpme );
2016 }
2017
2018
2019 /**********************************************************************
2020  *          ModuleNext    (TOOLHELP.60)
2021  */
2022 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
2023 {
2024     NE_MODULE *pModule;
2025     char *name;
2026
2027     if (!lpme->wNext) return FALSE;
2028     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
2029     name = (char *)pModule + pModule->name_table;
2030     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
2031     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
2032     lpme->hModule = lpme->wNext;
2033     lpme->wcUsage = pModule->count;
2034     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
2035     lpme->wNext = pModule->next;
2036     return TRUE;
2037 }
2038
2039
2040 /**********************************************************************
2041  *          ModuleFindName    (TOOLHELP.61)
2042  */
2043 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
2044 {
2045     lpme->wNext = GetModuleHandle16( name );
2046     return ModuleNext16( lpme );
2047 }
2048
2049
2050 /**********************************************************************
2051  *          ModuleFindHandle    (TOOLHELP.62)
2052  */
2053 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
2054 {
2055     hModule = GetExePtr( hModule );
2056     lpme->wNext = hModule;
2057     return ModuleNext16( lpme );
2058 }
2059
2060
2061 /***************************************************************************
2062  *          IsRomModule    (KERNEL.323)
2063  */
2064 BOOL16 WINAPI IsRomModule16( HMODULE16 unused )
2065 {
2066     return FALSE;
2067 }
2068
2069 /***************************************************************************
2070  *          IsRomFile    (KERNEL.326)
2071  */
2072 BOOL16 WINAPI IsRomFile16( HFILE16 unused )
2073 {
2074     return FALSE;
2075 }
2076
2077 /***********************************************************************
2078  *           create_dummy_module
2079  *
2080  * Create a dummy NE module for Win32 or Winelib.
2081  */
2082 static HMODULE16 create_dummy_module( HMODULE module32 )
2083 {
2084     HMODULE16 hModule;
2085     NE_MODULE *pModule;
2086     SEGTABLEENTRY *pSegment;
2087     char *pStr,*s;
2088     unsigned int len;
2089     const char* basename;
2090     OFSTRUCT *ofs;
2091     int of_size, size;
2092     char filename[MAX_PATH];
2093     IMAGE_NT_HEADERS *nt = RtlImageNtHeader( module32 );
2094
2095     if (!nt) return (HMODULE16)11;  /* invalid exe */
2096
2097     /* Extract base filename */
2098     len = GetModuleFileNameA( module32, filename, sizeof(filename) );
2099     if (!len || len >= sizeof(filename)) return (HMODULE16)11;  /* invalid exe */
2100     basename = strrchr(filename, '\\');
2101     if (!basename) basename = filename;
2102     else basename++;
2103     len = strlen(basename);
2104     if ((s = strchr(basename, '.'))) len = s - basename;
2105
2106     /* Allocate module */
2107     of_size = sizeof(OFSTRUCT) - sizeof(ofs->szPathName)
2108                     + strlen(filename) + 1;
2109     size = sizeof(NE_MODULE) +
2110                  /* loaded file info */
2111                  ((of_size + 3) & ~3) +
2112                  /* segment table: DS,CS */
2113                  2 * sizeof(SEGTABLEENTRY) +
2114                  /* name table */
2115                  len + 2 +
2116                  /* several empty tables */
2117                  8;
2118
2119     hModule = GlobalAlloc16( GMEM_MOVEABLE | GMEM_ZEROINIT, size );
2120     if (!hModule) return (HMODULE16)11;  /* invalid exe */
2121
2122     FarSetOwner16( hModule, hModule );
2123     pModule = (NE_MODULE *)GlobalLock16( hModule );
2124
2125     /* Set all used entries */
2126     pModule->magic            = IMAGE_OS2_SIGNATURE;
2127     pModule->count            = 1;
2128     pModule->next             = 0;
2129     pModule->flags            = NE_FFLAGS_WIN32;
2130     pModule->dgroup           = 0;
2131     pModule->ss               = 1;
2132     pModule->cs               = 2;
2133     pModule->heap_size        = 0;
2134     pModule->stack_size       = 0;
2135     pModule->seg_count        = 2;
2136     pModule->modref_count     = 0;
2137     pModule->nrname_size      = 0;
2138     pModule->fileinfo         = sizeof(NE_MODULE);
2139     pModule->os_flags         = NE_OSFLAGS_WINDOWS;
2140     pModule->self             = hModule;
2141     pModule->module32         = module32;
2142
2143     /* Set version and flags */
2144     pModule->expected_version = ((nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 ) |
2145                                 (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
2146     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
2147         pModule->flags |= NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA;
2148
2149     /* Set loaded file information */
2150     ofs = (OFSTRUCT *)(pModule + 1);
2151     memset( ofs, 0, of_size );
2152     ofs->cBytes = of_size < 256 ? of_size : 255;   /* FIXME */
2153     strcpy( ofs->szPathName, filename );
2154
2155     pSegment = (SEGTABLEENTRY*)((char*)(pModule + 1) + ((of_size + 3) & ~3));
2156     pModule->seg_table = (int)pSegment - (int)pModule;
2157     /* Data segment */
2158     pSegment->size    = 0;
2159     pSegment->flags   = NE_SEGFLAGS_DATA;
2160     pSegment->minsize = 0x1000;
2161     pSegment++;
2162     /* Code segment */
2163     pSegment->flags   = 0;
2164     pSegment++;
2165
2166     /* Module name */
2167     pStr = (char *)pSegment;
2168     pModule->name_table = (int)pStr - (int)pModule;
2169     assert(len<256);
2170     *pStr = len;
2171     lstrcpynA( pStr+1, basename, len+1 );
2172     pStr += len+2;
2173
2174     /* All tables zero terminated */
2175     pModule->res_table = pModule->import_table = pModule->entry_table = (int)pStr - (int)pModule;
2176
2177     NE_RegisterModule( pModule );
2178     LoadLibraryA( filename );  /* increment the ref count of the 32-bit module */
2179     return hModule;
2180 }
2181
2182 /***********************************************************************
2183  *           PrivateLoadLibrary       (KERNEL32.@)
2184  *
2185  * FIXME: rough guesswork, don't know what "Private" means
2186  */
2187 HINSTANCE16 WINAPI PrivateLoadLibrary(LPCSTR libname)
2188 {
2189     return LoadLibrary16(libname);
2190 }
2191
2192 /***********************************************************************
2193  *           PrivateFreeLibrary       (KERNEL32.@)
2194  *
2195  * FIXME: rough guesswork, don't know what "Private" means
2196  */
2197 void WINAPI PrivateFreeLibrary(HINSTANCE16 handle)
2198 {
2199     FreeLibrary16(handle);
2200 }
2201
2202 /***********************************************************************
2203  *           LoadLibrary32        (KERNEL.452)
2204  *           LoadSystemLibrary32  (KERNEL.482)
2205  */
2206 HMODULE WINAPI LoadLibrary32_16( LPCSTR libname )
2207 {
2208     HMODULE hModule;
2209     DWORD count;
2210
2211     ReleaseThunkLock( &count );
2212     hModule = LoadLibraryA( libname );
2213     RestoreThunkLock( count );
2214     return hModule;
2215 }
2216
2217 /***************************************************************************
2218  *              MapHModuleLS                    (KERNEL32.@)
2219  */
2220 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod)
2221 {
2222     HMODULE16 ret;
2223     NE_MODULE *pModule;
2224
2225     if (!hmod)
2226         return TASK_GetCurrent()->hInstance;
2227     if (!HIWORD(hmod))
2228         return LOWORD(hmod); /* we already have a 16 bit module handle */
2229     pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
2230     while (pModule)  {
2231         if (pModule->module32 == hmod)
2232             return pModule->self;
2233         pModule = (NE_MODULE*)GlobalLock16(pModule->next);
2234     }
2235     if ((ret = create_dummy_module( hmod )) < 32)
2236     {
2237         SetLastError(ret);
2238         ret = 0;
2239     }
2240     return ret;
2241 }
2242
2243 /***************************************************************************
2244  *              MapHModuleSL                    (KERNEL32.@)
2245  */
2246 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod)
2247 {
2248     NE_MODULE *pModule;
2249
2250     if (!hmod) {
2251         TDB *pTask = TASK_GetCurrent();
2252         hmod = pTask->hModule;
2253     }
2254     pModule = (NE_MODULE*)GlobalLock16(hmod);
2255     if ((pModule->magic!=IMAGE_OS2_SIGNATURE) || !(pModule->flags & NE_FFLAGS_WIN32))
2256         return 0;
2257     return pModule->module32;
2258 }
2259
2260 /***************************************************************************
2261  *              MapHInstLS                      (KERNEL32.@)
2262  *              MapHInstLS                      (KERNEL.472)
2263  */
2264 void WINAPI MapHInstLS( CONTEXT86 *context )
2265 {
2266     context->Eax = MapHModuleLS( (HMODULE)context->Eax );
2267 }
2268
2269 /***************************************************************************
2270  *              MapHInstSL                      (KERNEL32.@)
2271  *              MapHInstSL                      (KERNEL.473)
2272  */
2273 void WINAPI MapHInstSL( CONTEXT86 *context )
2274 {
2275     context->Eax = (DWORD)MapHModuleSL( context->Eax );
2276 }
2277
2278 /***************************************************************************
2279  *              MapHInstLS_PN                   (KERNEL32.@)
2280  */
2281 void WINAPI MapHInstLS_PN( CONTEXT86 *context )
2282 {
2283     if (context->Eax) context->Eax = MapHModuleLS( (HMODULE)context->Eax );
2284 }
2285
2286 /***************************************************************************
2287  *              MapHInstSL_PN                   (KERNEL32.@)
2288  */
2289 void WINAPI MapHInstSL_PN( CONTEXT86 *context )
2290 {
2291     if (context->Eax) context->Eax = (DWORD)MapHModuleSL( context->Eax );
2292 }