loader/ne/module.c

   1 /*
   2  * NE modules
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include <fcntl.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include "module.h"
  13 #include "file.h"
  14 #include "ldt.h"
  15 #include "callback.h"
  16 #include "heap.h"
  17 #include "task.h"
  18 #include "global.h"
  19 #include "process.h"
  20 #include "toolhelp.h"
  21 #include "snoop.h"
  22 #include "stackframe.h"
  23 #include "debug.h"
  24
  25 FARPROC16 (*fnSNOOP16_GetProcAddress16)(HMODULE16,DWORD,FARPROC16) = NULL;
  26 void (*fnSNOOP16_RegisterDLL)(NE_MODULE*,LPCSTR) = NULL;
  27
  28 #define hFirstModule (pThhook->hExeHead)
  29
  30 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  31
  32 static HMODULE16 NE_LoadBuiltin(LPCSTR name,BOOL32 force) { return 0; }
  33 HMODULE16 (*fnBUILTIN_LoadModule)(LPCSTR name,BOOL32 force) = NE_LoadBuiltin;
  34
  35
  36 /***********************************************************************
  37  *           NE_GetPtr
  38  */
  39 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
  40 {
  41     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
  42 }
  43
  44
  45 /***********************************************************************
  46  *           NE_DumpModule
  47  */
  48 void NE_DumpModule( HMODULE16 hModule )
  49 {
  50     int i, ordinal;
  51     SEGTABLEENTRY *pSeg;
  52     BYTE *pstr;
  53     WORD *pword;
  54     NE_MODULE *pModule;
  55
  56     if (!(pModule = NE_GetPtr( hModule )))
  57     {
  58         MSG( "**** %04x is not a module handle\n", hModule );
  59         return;
  60     }
  61
  62       /* Dump the module info */
  63     DUMP( "---\n" );
  64     DUMP( "Module %04x:\n", hModule );
  65     DUMP( "count=%d flags=%04x heap=%d stack=%d\n",
  66           pModule->count, pModule->flags,
  67           pModule->heap_size, pModule->stack_size );
  68     DUMP( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
  69           pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
  70           pModule->seg_count, pModule->modref_count );
  71     DUMP( "os_flags=%d swap_area=%d version=%04x\n",
  72           pModule->os_flags, pModule->min_swap_area,
  73           pModule->expected_version );
  74     if (pModule->flags & NE_FFLAGS_WIN32)
  75         DUMP( "PE module=%08x\n", pModule->module32 );
  76
  77       /* Dump the file info */
  78     DUMP( "---\n" );
  79     DUMP( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
  80
  81       /* Dump the segment table */
  82     DUMP( "---\n" );
  83     DUMP( "Segment table:\n" );
  84     pSeg = NE_SEG_TABLE( pModule );
  85     for (i = 0; i < pModule->seg_count; i++, pSeg++)
  86         DUMP( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
  87               i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
  88               pSeg->minsize, pSeg->hSeg );
  89
  90       /* Dump the resource table */
  91     DUMP( "---\n" );
  92     DUMP( "Resource table:\n" );
  93     if (pModule->res_table)
  94     {
  95         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
  96         DUMP( "Alignment: %d\n", *pword++ );
  97         while (*pword)
  98         {
  99             struct resource_typeinfo_s *ptr = (struct resource_typeinfo_s *)pword;
 100             struct resource_nameinfo_s *pname = (struct resource_nameinfo_s *)(ptr + 1);
 101             DUMP( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 102             for (i = 0; i < ptr->count; i++, pname++)
 103                 DUMP( "offset=%d len=%d id=%04x\n",
 104                       pname->offset, pname->length, pname->id );
 105             pword = (WORD *)pname;
 106         }
 107     }
 108     else DUMP( "None\n" );
 109
 110       /* Dump the resident name table */
 111     DUMP( "---\n" );
 112     DUMP( "Resident-name table:\n" );
 113     pstr = (char *)pModule + pModule->name_table;
 114     while (*pstr)
 115     {
 116         DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 117               *(WORD *)(pstr + *pstr + 1) );
 118         pstr += *pstr + 1 + sizeof(WORD);
 119     }
 120
 121       /* Dump the module reference table */
 122     DUMP( "---\n" );
 123     DUMP( "Module ref table:\n" );
 124     if (pModule->modref_table)
 125     {
 126         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 127         for (i = 0; i < pModule->modref_count; i++, pword++)
 128         {
 129             char name[10];
 130             GetModuleName( *pword, name, sizeof(name) );
 131             DUMP( "%d: %04x -> '%s'\n", i, *pword, name );
 132         }
 133     }
 134     else DUMP( "None\n" );
 135
 136       /* Dump the entry table */
 137     DUMP( "---\n" );
 138     DUMP( "Entry table:\n" );
 139     pstr = (char *)pModule + pModule->entry_table;
 140     ordinal = 1;
 141     while (*pstr)
 142     {
 143         DUMP( "Bundle %d-%d: %02x\n", ordinal, ordinal + *pstr - 1, pstr[1]);
 144         if (!pstr[1])
 145         {
 146             ordinal += *pstr;
 147             pstr += 2;
 148         }
 149         else if ((BYTE)pstr[1] == 0xff)  /* moveable */
 150         {
 151             i = *pstr;
 152             pstr += 2;
 153             while (i--)
 154             {
 155                 DUMP( "%d: %02x:%04x (moveable)\n",
 156                       ordinal++, pstr[3], *(WORD *)(pstr + 4) );
 157                 pstr += 6;
 158             }
 159         }
 160         else  /* fixed */
 161         {
 162             i = *pstr;
 163             pstr += 2;
 164             while (i--)
 165             {
 166                 DUMP( "%d: %04x (fixed)\n",
 167                       ordinal++, *(WORD *)(pstr + 1) );
 168                 pstr += 3;
 169             }
 170         }
 171     }
 172
 173     /* Dump the non-resident names table */
 174     DUMP( "---\n" );
 175     DUMP( "Non-resident names table:\n" );
 176     if (pModule->nrname_handle)
 177     {
 178         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 179         while (*pstr)
 180         {
 181             DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 182                    *(WORD *)(pstr + *pstr + 1) );
 183             pstr += *pstr + 1 + sizeof(WORD);
 184         }
 185     }
 186     DUMP( "\n" );
 187 }
 188
 189
 190 /***********************************************************************
 191  *           NE_WalkModules
 192  *
 193  * Walk the module list and print the modules.
 194  */
 195 void NE_WalkModules(void)
 196 {
 197     HMODULE16 hModule = hFirstModule;
 198     MSG( "Module Flags Name\n" );
 199     while (hModule)
 200     {
 201         NE_MODULE *pModule = NE_GetPtr( hModule );
 202         if (!pModule)
 203         {
 204             MSG( "Bad module %04x in list\n", hModule );
 205             return;
 206         }
 207         MSG( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 208                  *((char *)pModule + pModule->name_table),
 209                  (char *)pModule + pModule->name_table + 1 );
 210         hModule = pModule->next;
 211     }
 212 }
 213
 214
 215 /**********************************************************************
 216  *           NE_RegisterModule
 217  */
 218 void NE_RegisterModule( NE_MODULE *pModule )
 219 {
 220     pModule->next = hFirstModule;
 221     hFirstModule = pModule->self;
 222 }
 223
 224
 225 /***********************************************************************
 226  *           NE_GetOrdinal
 227  *
 228  * Lookup the ordinal for a given name.
 229  */
 230 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 231 {
 232     unsigned char buffer[256], *cpnt;
 233     BYTE len;
 234     NE_MODULE *pModule;
 235
 236     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 237     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 238
 239     TRACE( module, "(%04x,'%s')\n", hModule, name );
 240
 241       /* First handle names of the form '#xxxx' */
 242
 243     if (name[0] == '#') return atoi( name + 1 );
 244
 245       /* Now copy and uppercase the string */
 246
 247     strcpy( buffer, name );
 248     CharUpper32A( buffer );
 249     len = strlen( buffer );
 250
 251       /* First search the resident names */
 252
 253     cpnt = (char *)pModule + pModule->name_table;
 254
 255       /* Skip the first entry (module name) */
 256     cpnt += *cpnt + 1 + sizeof(WORD);
 257     while (*cpnt)
 258     {
 259         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 260         {
 261             TRACE(module, "  Found: ordinal=%d\n",
 262                             *(WORD *)(cpnt + *cpnt + 1) );
 263             return *(WORD *)(cpnt + *cpnt + 1);
 264         }
 265         cpnt += *cpnt + 1 + sizeof(WORD);
 266     }
 267
 268       /* Now search the non-resident names table */
 269
 270     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 271     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 272
 273       /* Skip the first entry (module description string) */
 274     cpnt += *cpnt + 1 + sizeof(WORD);
 275     while (*cpnt)
 276     {
 277         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 278         {
 279             TRACE(module, "  Found: ordinal=%d\n",
 280                             *(WORD *)(cpnt + *cpnt + 1) );
 281             return *(WORD *)(cpnt + *cpnt + 1);
 282         }
 283         cpnt += *cpnt + 1 + sizeof(WORD);
 284     }
 285     return 0;
 286 }
 287
 288
 289 /***********************************************************************
 290  *           NE_GetEntryPoint   (WPROCS.27)
 291  *
 292  * Return the entry point for a given ordinal.
 293  */
 294 FARPROC16 NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 295 {
 296     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 297 }
 298 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 299 {
 300     NE_MODULE *pModule;
 301     WORD curOrdinal = 1;
 302     BYTE *p;
 303     WORD sel, offset;
 304
 305     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 306     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 307
 308     p = (BYTE *)pModule + pModule->entry_table;
 309     while (*p && (curOrdinal + *p <= ordinal))
 310     {
 311           /* Skipping this bundle */
 312         curOrdinal += *p;
 313         switch(p[1])
 314         {
 315             case 0:    p += 2; break;  /* unused */
 316             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 317             default:   p += 2 + *p * 3; break;  /* fixed */
 318         }
 319     }
 320     if (!*p) return 0;
 321
 322     switch(p[1])
 323     {
 324         case 0:  /* unused */
 325             return 0;
 326         case 0xff:  /* moveable */
 327             p += 2 + 6 * (ordinal - curOrdinal);
 328             sel = p[3];
 329             offset = *(WORD *)(p + 4);
 330             break;
 331         default:  /* fixed */
 332             sel = p[1];
 333             p += 2 + 3 * (ordinal - curOrdinal);
 334             offset = *(WORD *)(p + 1);
 335             break;
 336     }
 337
 338     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 339     else sel = GlobalHandleToSel(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 340     if (sel==0xffff)
 341         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 342     if (!snoop || !fnSNOOP16_GetProcAddress16)
 343         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 344     else
 345         return (FARPROC16)fnSNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset ));
 346 }
 347
 348
 349 /***********************************************************************
 350  *           NE_SetEntryPoint
 351  *
 352  * Change the value of an entry point. Use with caution!
 353  * It can only change the offset value, not the selector.
 354  */
 355 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 356 {
 357     NE_MODULE *pModule;
 358     WORD curOrdinal = 1;
 359     BYTE *p;
 360
 361     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 362     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 363
 364     p = (BYTE *)pModule + pModule->entry_table;
 365     while (*p && (curOrdinal + *p <= ordinal))
 366     {
 367           /* Skipping this bundle */
 368         curOrdinal += *p;
 369         switch(p[1])
 370         {
 371             case 0:    p += 2; break;  /* unused */
 372             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 373             default:   p += 2 + *p * 3; break;  /* fixed */
 374         }
 375     }
 376     if (!*p) return FALSE;
 377
 378     switch(p[1])
 379     {
 380         case 0:  /* unused */
 381             return FALSE;
 382         case 0xff:  /* moveable */
 383             p += 2 + 6 * (ordinal - curOrdinal);
 384             *(WORD *)(p + 4) = offset;
 385             break;
 386         default:  /* fixed */
 387             p += 2 + 3 * (ordinal - curOrdinal);
 388             *(WORD *)(p + 1) = offset;
 389             break;
 390     }
 391     return TRUE;
 392 }
 393
 394
 395 /***********************************************************************
 396  *           NE_OpenFile
 397  */
 398 int NE_OpenFile( NE_MODULE *pModule )
 399 {
 400     DOS_FULL_NAME full_name;
 401     char *name;
 402
 403     static int cachedfd = -1;
 404
 405     TRACE( module, "(%p) cache: mod=%p fd=%d\n",
 406            pModule, pCachedModule, cachedfd );
 407     if (pCachedModule == pModule) return cachedfd;
 408     close( cachedfd );
 409     pCachedModule = pModule;
 410     name = NE_MODULE_NAME( pModule );
 411     if (!DOSFS_GetFullName( name, TRUE, &full_name ) ||
 412         (cachedfd = open( full_name.long_name, O_RDONLY )) == -1)
 413         MSG( "Can't open file '%s' for module %04x\n", name, pModule->self );
 414     TRACE(module, "opened '%s' -> %d\n",
 415                     name, cachedfd );
 416     return cachedfd;
 417 }
 418
 419
 420 /***********************************************************************
 421  *           NE_LoadExeHeader
 422  */
 423 static HMODULE16 NE_LoadExeHeader( HFILE16 hFile, OFSTRUCT *ofs )
 424 {
 425     IMAGE_DOS_HEADER mz_header;
 426     IMAGE_OS2_HEADER ne_header;
 427     int size;
 428     HMODULE16 hModule;
 429     NE_MODULE *pModule;
 430     BYTE *pData;
 431     char *buffer, *fastload = NULL;
 432     int fastload_offset = 0, fastload_length = 0;
 433
 434   /* Read a block from either the file or the fast-load area. */
 435 #define READ(offset,size,buffer) \
 436        ((fastload && ((offset) >= fastload_offset) && \
 437          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 438         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 439         (_llseek16( hFile, (offset), SEEK_SET), \
 440          _hread16( hFile, (buffer), (size) ) == (size)))
 441
 442     _llseek16( hFile, 0, SEEK_SET );
 443     if ((_hread16(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
 444         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 445         return (HMODULE16)11;  /* invalid exe */
 446
 447     _llseek16( hFile, mz_header.e_lfanew, SEEK_SET );
 448     if (_hread16( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
 449         return (HMODULE16)11;  /* invalid exe */
 450
 451     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 452     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 453
 454     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 455       MSG("Sorry, this is an OS/2 linear executable (LX) file !\n");
 456       return (HMODULE16)12;
 457     }
 458
 459     /* We now have a valid NE header */
 460
 461     size = sizeof(NE_MODULE) +
 462              /* segment table */
 463            ne_header.n_segment_tab * sizeof(SEGTABLEENTRY) +
 464              /* resource table */
 465            ne_header.rname_tab_offset - ne_header.resource_tab_offset +
 466              /* resident names table */
 467            ne_header.moduleref_tab_offset - ne_header.rname_tab_offset +
 468              /* module ref table */
 469            ne_header.n_mod_ref_tab * sizeof(WORD) +
 470              /* imported names table */
 471            ne_header.entry_tab_offset - ne_header.iname_tab_offset +
 472              /* entry table length */
 473            ne_header.entry_tab_length +
 474              /* loaded file info */
 475            sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 476
 477     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 478     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 479     FarSetOwner( hModule, hModule );
 480     pModule = (NE_MODULE *)GlobalLock16( hModule );
 481     memcpy( pModule, &ne_header, sizeof(ne_header) );
 482     pModule->count = 0;
 483     pModule->module32 = 0;
 484     pModule->self = hModule;
 485     pModule->self_loading_sel = 0;
 486     pData = (BYTE *)(pModule + 1);
 487
 488     /* Clear internal Wine flags in case they are set in the EXE file */
 489
 490     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 491
 492     /* Read the fast-load area */
 493
 494     if (ne_header.additional_flags & NE_AFLAGS_FASTLOAD)
 495     {
 496         fastload_offset=ne_header.fastload_offset<<ne_header.align_shift_count;
 497         fastload_length=ne_header.fastload_length<<ne_header.align_shift_count;
 498         TRACE(module, "Using fast-load area offset=%x len=%d\n",
 499                         fastload_offset, fastload_length );
 500         if ((fastload = HeapAlloc( SystemHeap, 0, fastload_length )) != NULL)
 501         {
 502             _llseek16( hFile, fastload_offset, SEEK_SET);
 503             if (_hread16(hFile, fastload, fastload_length) != fastload_length)
 504             {
 505                 HeapFree( SystemHeap, 0, fastload );
 506                 WARN( module, "Error reading fast-load area!\n");
 507                 fastload = NULL;
 508             }
 509         }
 510     }
 511
 512     /* Get the segment table */
 513
 514     pModule->seg_table = (int)pData - (int)pModule;
 515     buffer = HeapAlloc( SystemHeap, 0, ne_header.n_segment_tab *
 516                                       sizeof(struct ne_segment_table_entry_s));
 517     if (buffer)
 518     {
 519         int i;
 520         struct ne_segment_table_entry_s *pSeg;
 521
 522         if (!READ( mz_header.e_lfanew + ne_header.segment_tab_offset,
 523              ne_header.n_segment_tab * sizeof(struct ne_segment_table_entry_s),
 524              buffer ))
 525         {
 526             HeapFree( SystemHeap, 0, buffer );
 527             if (fastload) HeapFree( SystemHeap, 0, fastload );
 528             GlobalFree16( hModule );
 529             return (HMODULE16)11;  /* invalid exe */
 530         }
 531         pSeg = (struct ne_segment_table_entry_s *)buffer;
 532         for (i = ne_header.n_segment_tab; i > 0; i--, pSeg++)
 533         {
 534             memcpy( pData, pSeg, sizeof(*pSeg) );
 535             pData += sizeof(SEGTABLEENTRY);
 536         }
 537         HeapFree( SystemHeap, 0, buffer );
 538     }
 539     else
 540     {
 541         if (fastload) HeapFree( SystemHeap, 0, fastload );
 542         GlobalFree16( hModule );
 543         return (HMODULE16)11;  /* invalid exe */
 544     }
 545
 546     /* Get the resource table */
 547
 548     if (ne_header.resource_tab_offset < ne_header.rname_tab_offset)
 549     {
 550         pModule->res_table = (int)pData - (int)pModule;
 551         if (!READ(mz_header.e_lfanew + ne_header.resource_tab_offset,
 552                   ne_header.rname_tab_offset - ne_header.resource_tab_offset,
 553                   pData )) return (HMODULE16)11;  /* invalid exe */
 554         pData += ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 555         NE_InitResourceHandler( hModule );
 556     }
 557     else pModule->res_table = 0;  /* No resource table */
 558
 559     /* Get the resident names table */
 560
 561     pModule->name_table = (int)pData - (int)pModule;
 562     if (!READ( mz_header.e_lfanew + ne_header.rname_tab_offset,
 563                ne_header.moduleref_tab_offset - ne_header.rname_tab_offset,
 564                pData ))
 565     {
 566         if (fastload) HeapFree( SystemHeap, 0, fastload );
 567         GlobalFree16( hModule );
 568         return (HMODULE16)11;  /* invalid exe */
 569     }
 570     pData += ne_header.moduleref_tab_offset - ne_header.rname_tab_offset;
 571
 572     /* Get the module references table */
 573
 574     if (ne_header.n_mod_ref_tab > 0)
 575     {
 576         pModule->modref_table = (int)pData - (int)pModule;
 577         if (!READ( mz_header.e_lfanew + ne_header.moduleref_tab_offset,
 578                   ne_header.n_mod_ref_tab * sizeof(WORD),
 579                   pData ))
 580         {
 581             if (fastload) HeapFree( SystemHeap, 0, fastload );
 582             GlobalFree16( hModule );
 583             return (HMODULE16)11;  /* invalid exe */
 584         }
 585         pData += ne_header.n_mod_ref_tab * sizeof(WORD);
 586     }
 587     else pModule->modref_table = 0;  /* No module references */
 588
 589     /* Get the imported names table */
 590
 591     pModule->import_table = (int)pData - (int)pModule;
 592     if (!READ( mz_header.e_lfanew + ne_header.iname_tab_offset,
 593                ne_header.entry_tab_offset - ne_header.iname_tab_offset,
 594                pData ))
 595     {
 596         if (fastload) HeapFree( SystemHeap, 0, fastload );
 597         GlobalFree16( hModule );
 598         return (HMODULE16)11;  /* invalid exe */
 599     }
 600     pData += ne_header.entry_tab_offset - ne_header.iname_tab_offset;
 601
 602     /* Get the entry table */
 603
 604     pModule->entry_table = (int)pData - (int)pModule;
 605     if (!READ( mz_header.e_lfanew + ne_header.entry_tab_offset,
 606                ne_header.entry_tab_length,
 607                pData ))
 608     {
 609         if (fastload) HeapFree( SystemHeap, 0, fastload );
 610         GlobalFree16( hModule );
 611         return (HMODULE16)11;  /* invalid exe */
 612     }
 613     pData += ne_header.entry_tab_length;
 614
 615     /* Store the filename information */
 616
 617     pModule->fileinfo = (int)pData - (int)pModule;
 618     size = sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 619     memcpy( pData, ofs, size );
 620     ((OFSTRUCT *)pData)->cBytes = size - 1;
 621     pData += size;
 622
 623     /* Free the fast-load area */
 624
 625 #undef READ
 626     if (fastload) HeapFree( SystemHeap, 0, fastload );
 627
 628     /* Get the non-resident names table */
 629
 630     if (ne_header.nrname_tab_length)
 631     {
 632         pModule->nrname_handle = GLOBAL_Alloc( 0, ne_header.nrname_tab_length,
 633                                                hModule, FALSE, FALSE, FALSE );
 634         if (!pModule->nrname_handle)
 635         {
 636             GlobalFree16( hModule );
 637             return (HMODULE16)11;  /* invalid exe */
 638         }
 639         buffer = GlobalLock16( pModule->nrname_handle );
 640         _llseek16( hFile, ne_header.nrname_tab_offset, SEEK_SET );
 641         if (_hread16( hFile, buffer, ne_header.nrname_tab_length )
 642               != ne_header.nrname_tab_length)
 643         {
 644             GlobalFree16( pModule->nrname_handle );
 645             GlobalFree16( hModule );
 646             return (HMODULE16)11;  /* invalid exe */
 647         }
 648     }
 649     else pModule->nrname_handle = 0;
 650
 651     /* Allocate a segment for the implicitly-loaded DLLs */
 652
 653     if (pModule->modref_count)
 654     {
 655         pModule->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,
 656                                     (pModule->modref_count+1)*sizeof(HMODULE16),
 657                                     hModule, FALSE, FALSE, FALSE );
 658         if (!pModule->dlls_to_init)
 659         {
 660             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 661             GlobalFree16( hModule );
 662             return (HMODULE16)11;  /* invalid exe */
 663         }
 664     }
 665     else pModule->dlls_to_init = 0;
 666
 667     NE_RegisterModule( pModule );
 668     if (fnSNOOP16_RegisterDLL)
 669         fnSNOOP16_RegisterDLL(pModule,ofs->szPathName);
 670     return hModule;
 671 }
 672
 673
 674 /***********************************************************************
 675  *           NE_LoadDLLs
 676  *
 677  * Load all DLLs implicitly linked to a module.
 678  */
 679 static BOOL32 NE_LoadDLLs( NE_MODULE *pModule )
 680 {
 681     int i;
 682     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 683     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 684
 685     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 686     {
 687         char buffer[260];
 688         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 689         memcpy( buffer, pstr + 1, *pstr );
 690         strcpy( buffer + *pstr, ".dll" );
 691         TRACE(module, "Loading '%s'\n", buffer );
 692         if (!(*pModRef = GetModuleHandle16( buffer )))
 693         {
 694             /* If the DLL is not loaded yet, load it and store */
 695             /* its handle in the list of DLLs to initialize.   */
 696             HMODULE16 hDLL;
 697
 698             if ((hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE )) == 2)
 699             {
 700                 /* file not found */
 701                 char *p;
 702
 703                 /* Try with prepending the path of the current module */
 704                 GetModuleFileName16( pModule->self, buffer, sizeof(buffer) );
 705                 if (!(p = strrchr( buffer, '\\' ))) p = buffer;
 706                 memcpy( p + 1, pstr + 1, *pstr );
 707                 strcpy( p + 1 + *pstr, ".dll" );
 708                 hDLL = NE_LoadModule( buffer, NULL, TRUE, TRUE );
 709             }
 710             if (hDLL < 32)
 711             {
 712                 /* FIXME: cleanup what was done */
 713
 714                 MSG( "Could not load '%s' required by '%.*s', error=%d\n",
 715                      buffer, *((BYTE*)pModule + pModule->name_table),
 716                      (char *)pModule + pModule->name_table + 1, hDLL );
 717                 return FALSE;
 718             }
 719             *pModRef = GetExePtr( hDLL );
 720             *pDLLs++ = *pModRef;
 721         }
 722         else  /* Increment the reference count of the DLL */
 723         {
 724             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 725             if (pOldDLL) pOldDLL->count++;
 726         }
 727     }
 728     return TRUE;
 729 }
 730
 731
 732 /**********************************************************************
 733  *          NE_LoadModule
 734  *
 735  * Implementation of LoadModule16().
 736  */
 737 HINSTANCE16 NE_LoadModule( LPCSTR name, HINSTANCE16 *hPrevInstance,
 738                            BOOL32 implicit, BOOL32 lib_only )
 739 {
 740     HMODULE16 hModule;
 741     HINSTANCE16 hInstance;
 742     NE_MODULE *pModule;
 743     HFILE16 hFile;
 744     OFSTRUCT ofs;
 745
 746     /* Check if the module is already loaded */
 747
 748     if ((hModule = GetModuleHandle16( name )) != 0)
 749     {
 750         HINSTANCE16 prev;
 751         pModule = NE_GetPtr( hModule );
 752         if ( pModule->module32 ) return (HINSTANCE16)21;
 753
 754         hInstance = NE_CreateInstance( pModule, &prev, lib_only );
 755         if (hInstance != prev)  /* not a library */
 756             NE_LoadSegment( pModule, pModule->dgroup );
 757         pModule->count++;
 758         if (hPrevInstance) *hPrevInstance = prev;
 759         return hInstance;
 760     }
 761     if (hPrevInstance) *hPrevInstance = 0;
 762
 763     /* Try to load the built-in first if not disabled */
 764
 765     if ((hModule = fnBUILTIN_LoadModule( name, FALSE ))) return hModule;
 766
 767     if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
 768     {
 769         /* Now try the built-in even if disabled */
 770         if ((hModule = fnBUILTIN_LoadModule( name, TRUE )))
 771         {
 772             MSG( "Could not load Windows DLL '%s', using built-in module.\n",
 773                  name );
 774             return hModule;
 775         }
 776         return 2;  /* File not found */
 777     }
 778
 779     /* Create the module structure */
 780
 781     hModule = NE_LoadExeHeader( hFile, &ofs );
 782     _lclose16( hFile );
 783     if (hModule < 32) return hModule;
 784     pModule = NE_GetPtr( hModule );
 785
 786     /* Allocate the segments for this module */
 787
 788     if (!NE_CreateSegments( pModule ) ||
 789         !(hInstance = NE_CreateInstance( pModule, NULL, lib_only )))
 790     {
 791         GlobalFreeAll( hModule );
 792         return 8;  /* Insufficient memory */
 793     }
 794
 795     /* Load the referenced DLLs */
 796
 797     if (!NE_LoadDLLs( pModule ))
 798         return 2;  /* File not found (FIXME: free everything) */
 799
 800     /* Load the segments */
 801
 802     NE_LoadAllSegments( pModule );
 803
 804     /* Fixup the functions prologs */
 805
 806     NE_FixupPrologs( pModule );
 807
 808     /* Make sure the usage count is 1 on the first loading of  */
 809     /* the module, even if it contains circular DLL references */
 810
 811     pModule->count = 1;
 812
 813     /* Call initialization rountines for all loaded DLLs. Note that
 814      * when we load implicitly linked DLLs this will be done by InitTask().
 815      */
 816
 817     if (!implicit && (pModule->flags & NE_FFLAGS_LIBMODULE))
 818         NE_InitializeDLLs( hModule );
 819
 820     return hInstance;
 821 }
 822
 823
 824 /***********************************************************************
 825  *           LoadLibrary   (KERNEL.95)
 826  */
 827 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
 828 {
 829     HINSTANCE16 handle;
 830     LPCSTR p;
 831     char *new_name;
 832
 833     TRACE(module, "(%08x) %s\n", (int)libname, libname);
 834
 835     /* Check for an extension */
 836
 837     if ((p = strrchr( libname, '.')) && !strchr( p, '/' ) && !strchr( p, '\\'))
 838     {
 839         /* An extension is present -> use the name as is */
 840         return NE_LoadModule( libname, NULL, FALSE, TRUE );
 841     }
 842
 843     /* Now append .dll before loading */
 844
 845     if (!(new_name = HeapAlloc( GetProcessHeap(), 0, strlen(libname) + 4 )))
 846         return 0;
 847     strcpy( new_name, libname );
 848     strcat( new_name, ".dll" );
 849     handle = NE_LoadModule( new_name, NULL, FALSE, TRUE );
 850     HeapFree( GetProcessHeap(), 0, new_name );
 851     return handle;
 852 }
 853
 854
 855 /**********************************************************************
 856  *          MODULE_CallWEP
 857  *
 858  * Call a DLL's WEP, allowing it to shut down.
 859  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
 860  */
 861 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
 862 {
 863     FARPROC16 WEP = (FARPROC16)0;
 864     WORD ordinal = NE_GetOrdinal( hModule, "WEP" );
 865
 866     if (ordinal) WEP = NE_GetEntryPoint( hModule, ordinal );
 867     if (!WEP)
 868     {
 869         WARN(module, "module %04x doesn't have a WEP\n", hModule );
 870         return FALSE;
 871     }
 872     return Callbacks->CallWindowsExitProc( WEP, WEP_FREE_DLL );
 873 }
 874
 875
 876 /**********************************************************************
 877  *          NE_FreeModule
 878  *
 879  * Implementation of FreeModule16().
 880  */
 881 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL32 call_wep )
 882 {
 883     HMODULE16 *hPrevModule;
 884     NE_MODULE *pModule;
 885     HMODULE16 *pModRef;
 886     int i;
 887
 888     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 889     hModule = pModule->self;
 890
 891     TRACE( module, "%04x count %d\n", hModule, pModule->count );
 892
 893     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
 894     else pModule->count = 0;
 895
 896     if (pModule->flags & NE_FFLAGS_BUILTIN)
 897         return FALSE;  /* Can't free built-in module */
 898
 899     if (call_wep)
 900     {
 901         if (pModule->flags & NE_FFLAGS_LIBMODULE)
 902         {
 903             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
 904             MODULE_CallWEP( hModule );
 905
 906             /* Free the objects owned by the DLL module */
 907
 908             if (pTask && pTask->userhandler)
 909                 pTask->userhandler( hModule, USIG_DLL_UNLOAD, 0,
 910                                     pTask->hInstance, pTask->hQueue );
 911         }
 912         else
 913             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
 914     }
 915
 916
 917     /* Clear magic number just in case */
 918
 919     pModule->magic = pModule->self = 0;
 920
 921       /* Remove it from the linked list */
 922
 923     hPrevModule = &hFirstModule;
 924     while (*hPrevModule && (*hPrevModule != hModule))
 925     {
 926         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
 927     }
 928     if (*hPrevModule) *hPrevModule = pModule->next;
 929
 930     /* Free the referenced modules */
 931
 932     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
 933     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 934     {
 935         NE_FreeModule( *pModRef, call_wep );
 936     }
 937
 938     /* Free the module storage */
 939
 940     GlobalFreeAll( hModule );
 941
 942     /* Remove module from cache */
 943
 944     if (pCachedModule == pModule) pCachedModule = NULL;
 945     return TRUE;
 946 }
 947
 948
 949 /**********************************************************************
 950  *          FreeModule16    (KERNEL.46)
 951  */
 952 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
 953 {
 954     return NE_FreeModule( hModule, TRUE );
 955 }
 956
 957
 958 /***********************************************************************
 959  *           FreeLibrary16   (KERNEL.96)
 960  */
 961 void WINAPI FreeLibrary16( HINSTANCE16 handle )
 962 {
 963     TRACE(module,"%04x\n", handle );
 964     FreeModule16( handle );
 965 }
 966
 967
 968 /**********************************************************************
 969  *          GetModuleName    (KERNEL.27)
 970  */
 971 BOOL16 WINAPI GetModuleName( HINSTANCE16 hinst, LPSTR buf, INT16 count )
 972 {
 973     NE_MODULE *pModule;
 974     BYTE *p;
 975
 976     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
 977     p = (BYTE *)pModule + pModule->name_table;
 978     if (count > *p) count = *p + 1;
 979     if (count > 0)
 980     {
 981         memcpy( buf, p + 1, count - 1 );
 982         buf[count-1] = '\0';
 983     }
 984     return TRUE;
 985 }
 986
 987
 988 /**********************************************************************
 989  *          GetModuleUsage    (KERNEL.48)
 990  */
 991 INT16 WINAPI GetModuleUsage( HINSTANCE16 hModule )
 992 {
 993     NE_MODULE *pModule = NE_GetPtr( hModule );
 994     return pModule ? pModule->count : 0;
 995 }
 996
 997
 998 /**********************************************************************
 999  *          GetExpWinVer    (KERNEL.167)
1000  */
1001 WORD WINAPI GetExpWinVer( HMODULE16 hModule )
1002 {
1003     NE_MODULE *pModule = NE_GetPtr( hModule );
1004     return pModule ? pModule->expected_version : 0;
1005 }
1006
1007
1008 /**********************************************************************
1009  *          GetModuleFileName16    (KERNEL.49)
1010  */
1011 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1012                                   INT16 nSize )
1013 {
1014     NE_MODULE *pModule;
1015
1016     if (!hModule) hModule = GetCurrentTask();
1017     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1018     lstrcpyn32A( lpFileName, NE_MODULE_NAME(pModule), nSize );
1019     TRACE(module, "%s\n", lpFileName );
1020     return strlen(lpFileName);
1021 }
1022
1023
1024 /**********************************************************************
1025  *          GetModuleHandle16    (KERNEL.47)
1026  *
1027  * Find a module from a path name.
1028  *
1029  * RETURNS
1030  *   LOWORD:
1031  *      the win16 module handle if found
1032  *      0 if not
1033  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1034  *      Always hFirstModule
1035  */
1036 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1037 {
1038     if (HIWORD(name) == 0)
1039         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1040     return MAKELONG(GetModuleHandle16( PTR_SEG_TO_LIN(name)), hFirstModule );
1041 }
1042
1043 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1044 {
1045     HMODULE16 hModule = hFirstModule;
1046     LPCSTR filename, dotptr, modulepath, modulename;
1047     BYTE len, *name_table;
1048
1049     if (!(filename = strrchr( name, '\\' ))) filename = name;
1050     else filename++;
1051     if ((dotptr = strrchr( filename, '.' )) != NULL)
1052         len = (BYTE)(dotptr - filename);
1053     else len = strlen( filename );
1054
1055     while (hModule)
1056     {
1057         NE_MODULE *pModule = NE_GetPtr( hModule );
1058         if (!pModule) break;
1059         modulepath = NE_MODULE_NAME(pModule);
1060         if (!(modulename = strrchr( modulepath, '\\' )))
1061             modulename = modulepath;
1062         else modulename++;
1063         if (!lstrcmpi32A( modulename, filename )) return hModule;
1064
1065         name_table = (BYTE *)pModule + pModule->name_table;
1066         if ((*name_table == len) && !lstrncmpi32A(filename, name_table+1, len))
1067             return hModule;
1068         hModule = pModule->next;
1069     }
1070     return 0;
1071 }
1072
1073
1074 /**********************************************************************
1075  *          ModuleFirst    (TOOLHELP.59)
1076  */
1077 BOOL16 WINAPI ModuleFirst( MODULEENTRY *lpme )
1078 {
1079     lpme->wNext = hFirstModule;
1080     return ModuleNext( lpme );
1081 }
1082
1083
1084 /**********************************************************************
1085  *          ModuleNext    (TOOLHELP.60)
1086  */
1087 BOOL16 WINAPI ModuleNext( MODULEENTRY *lpme )
1088 {
1089     NE_MODULE *pModule;
1090     char *name;
1091
1092     if (!lpme->wNext) return FALSE;
1093     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1094     name = (char *)pModule + pModule->name_table;
1095     memcpy( lpme->szModule, name + 1, *name );
1096     lpme->szModule[(BYTE)*name] = '\0';
1097     lpme->hModule = lpme->wNext;
1098     lpme->wcUsage = pModule->count;
1099     strncpy( lpme->szExePath, NE_MODULE_NAME(pModule), MAX_PATH );
1100     lpme->szExePath[MAX_PATH] = '\0';
1101     lpme->wNext = pModule->next;
1102     return TRUE;
1103 }
1104
1105
1106 /**********************************************************************
1107  *          ModuleFindName    (TOOLHELP.61)
1108  */
1109 BOOL16 WINAPI ModuleFindName( MODULEENTRY *lpme, LPCSTR name )
1110 {
1111     lpme->wNext = GetModuleHandle16( name );
1112     return ModuleNext( lpme );
1113 }
1114
1115
1116 /**********************************************************************
1117  *          ModuleFindHandle    (TOOLHELP.62)
1118  */
1119 BOOL16 WINAPI ModuleFindHandle( MODULEENTRY *lpme, HMODULE16 hModule )
1120 {
1121     hModule = GetExePtr( hModule );
1122     lpme->wNext = hModule;
1123     return ModuleNext( lpme );
1124 }
1125
1126 /***************************************************************************
1127  *              MapHModuleLS                    (KERNEL32.520)
1128  */
1129 HMODULE16 WINAPI MapHModuleLS(HMODULE32 hmod) {
1130         NE_MODULE       *pModule;
1131
1132         if (!hmod)
1133                 return ((TDB*)GlobalLock16(GetCurrentTask()))->hInstance;
1134         if (!HIWORD(hmod))
1135                 return hmod; /* we already have a 16 bit module handle */
1136         pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1137         while (pModule)  {
1138                 if (pModule->module32 == hmod)
1139                         return pModule->self;
1140                 pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1141         }
1142         return 0;
1143 }
1144
1145 /***************************************************************************
1146  *              MapHModuleSL                    (KERNEL32.521)
1147  */
1148 HMODULE32 WINAPI MapHModuleSL(HMODULE16 hmod) {
1149         NE_MODULE       *pModule;
1150
1151         if (!hmod) {
1152                 TDB *pTask = (TDB*)GlobalLock16(GetCurrentTask());
1153
1154                 hmod = pTask->hInstance;
1155         }
1156         pModule = (NE_MODULE*)GlobalLock16(hmod);
1157         if (    (pModule->magic!=IMAGE_OS2_SIGNATURE)   ||
1158                 !(pModule->flags & NE_FFLAGS_WIN32)
1159         )
1160                 return 0;
1161         return pModule->module32;
1162 }
1163
1164 /***************************************************************************
1165  *              MapHInstLS                      (KERNEL32.516)
1166  */
1167 REGS_ENTRYPOINT(MapHInstLS) {
1168         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1169 }
1170
1171 /***************************************************************************
1172  *              MapHInstSL                      (KERNEL32.518)
1173  */
1174 REGS_ENTRYPOINT(MapHInstSL) {
1175         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1176 }
1177
1178 /***************************************************************************
1179  *              MapHInstLS_PN                   (KERNEL32.517)
1180  */
1181 REGS_ENTRYPOINT(MapHInstLS_PN) {
1182         if (EAX_reg(context))
1183             EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1184 }
1185
1186 /***************************************************************************
1187  *              MapHInstSL_PN                   (KERNEL32.519)
1188  */
1189 REGS_ENTRYPOINT(MapHInstSL_PN) {
1190         if (EAX_reg(context))
1191             EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1192 }
1193
1194 /***************************************************************************
1195  *              WIN16_MapHInstLS                (KERNEL.472)
1196  */
1197 VOID WINAPI WIN16_MapHInstLS( CONTEXT *context ) {
1198         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1199 }
1200
1201 /***************************************************************************
1202  *              WIN16_MapHInstSL                (KERNEL.473)
1203  */
1204 VOID WINAPI WIN16_MapHInstSL( CONTEXT *context ) {
1205         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1206 }