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 "wine/winbase16.h"
  13 #include "winerror.h"
  14 #include "module.h"
  15 #include "neexe.h"
  16 #include "peexe.h"
  17 #include "toolhelp.h"
  18 #include "file.h"
  19 #include "ldt.h"
  20 #include "callback.h"
  21 #include "heap.h"
  22 #include "task.h"
  23 #include "global.h"
  24 #include "process.h"
  25 #include "toolhelp.h"
  26 #include "snoop.h"
  27 #include "stackframe.h"
  28 #include "debug.h"
  29 #include "file.h"
  30
  31 FARPROC16 (*fnSNOOP16_GetProcAddress16)(HMODULE16,DWORD,FARPROC16) = NULL;
  32 void (*fnSNOOP16_RegisterDLL)(NE_MODULE*,LPCSTR) = NULL;
  33
  34 #define hFirstModule (pThhook->hExeHead)
  35
  36 static NE_MODULE *pCachedModule = 0;  /* Module cached by NE_OpenFile */
  37 static HMODULE16 GetModuleFromPath(LPCSTR name);
  38
  39 static HMODULE16 NE_LoadBuiltin(LPCSTR name,BOOL force) { return 0; }
  40 HMODULE16 (*fnBUILTIN_LoadModule)(LPCSTR name,BOOL force) = NE_LoadBuiltin;
  41
  42
  43 /***********************************************************************
  44  *           NE_GetPtr
  45  */
  46 NE_MODULE *NE_GetPtr( HMODULE16 hModule )
  47 {
  48     return (NE_MODULE *)GlobalLock16( GetExePtr(hModule) );
  49 }
  50
  51
  52 /***********************************************************************
  53  *           NE_DumpModule
  54  */
  55 void NE_DumpModule( HMODULE16 hModule )
  56 {
  57     int i, ordinal;
  58     SEGTABLEENTRY *pSeg;
  59     BYTE *pstr;
  60     WORD *pword;
  61     NE_MODULE *pModule;
  62
  63     if (!(pModule = NE_GetPtr( hModule )))
  64     {
  65         MSG( "**** %04x is not a module handle\n", hModule );
  66         return;
  67     }
  68
  69       /* Dump the module info */
  70     DUMP( "---\n" );
  71     DUMP( "Module %04x:\n", hModule );
  72     DUMP( "count=%d flags=%04x heap=%d stack=%d\n",
  73           pModule->count, pModule->flags,
  74           pModule->heap_size, pModule->stack_size );
  75     DUMP( "cs:ip=%04x:%04x ss:sp=%04x:%04x ds=%04x nb seg=%d modrefs=%d\n",
  76           pModule->cs, pModule->ip, pModule->ss, pModule->sp, pModule->dgroup,
  77           pModule->seg_count, pModule->modref_count );
  78     DUMP( "os_flags=%d swap_area=%d version=%04x\n",
  79           pModule->os_flags, pModule->min_swap_area,
  80           pModule->expected_version );
  81     if (pModule->flags & NE_FFLAGS_WIN32)
  82         DUMP( "PE module=%08x\n", pModule->module32 );
  83
  84       /* Dump the file info */
  85     DUMP( "---\n" );
  86     DUMP( "Filename: '%s'\n", NE_MODULE_NAME(pModule) );
  87
  88       /* Dump the segment table */
  89     DUMP( "---\n" );
  90     DUMP( "Segment table:\n" );
  91     pSeg = NE_SEG_TABLE( pModule );
  92     for (i = 0; i < pModule->seg_count; i++, pSeg++)
  93         DUMP( "%02x: pos=%d size=%d flags=%04x minsize=%d hSeg=%04x\n",
  94               i + 1, pSeg->filepos, pSeg->size, pSeg->flags,
  95               pSeg->minsize, pSeg->hSeg );
  96
  97       /* Dump the resource table */
  98     DUMP( "---\n" );
  99     DUMP( "Resource table:\n" );
 100     if (pModule->res_table)
 101     {
 102         pword = (WORD *)((BYTE *)pModule + pModule->res_table);
 103         DUMP( "Alignment: %d\n", *pword++ );
 104         while (*pword)
 105         {
 106             struct resource_typeinfo_s *ptr = (struct resource_typeinfo_s *)pword;
 107             struct resource_nameinfo_s *pname = (struct resource_nameinfo_s *)(ptr + 1);
 108             DUMP( "id=%04x count=%d\n", ptr->type_id, ptr->count );
 109             for (i = 0; i < ptr->count; i++, pname++)
 110                 DUMP( "offset=%d len=%d id=%04x\n",
 111                       pname->offset, pname->length, pname->id );
 112             pword = (WORD *)pname;
 113         }
 114     }
 115     else DUMP( "None\n" );
 116
 117       /* Dump the resident name table */
 118     DUMP( "---\n" );
 119     DUMP( "Resident-name table:\n" );
 120     pstr = (char *)pModule + pModule->name_table;
 121     while (*pstr)
 122     {
 123         DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 124               *(WORD *)(pstr + *pstr + 1) );
 125         pstr += *pstr + 1 + sizeof(WORD);
 126     }
 127
 128       /* Dump the module reference table */
 129     DUMP( "---\n" );
 130     DUMP( "Module ref table:\n" );
 131     if (pModule->modref_table)
 132     {
 133         pword = (WORD *)((BYTE *)pModule + pModule->modref_table);
 134         for (i = 0; i < pModule->modref_count; i++, pword++)
 135         {
 136             char name[10];
 137             GetModuleName16( *pword, name, sizeof(name) );
 138             DUMP( "%d: %04x -> '%s'\n", i, *pword, name );
 139         }
 140     }
 141     else DUMP( "None\n" );
 142
 143       /* Dump the entry table */
 144     DUMP( "---\n" );
 145     DUMP( "Entry table:\n" );
 146     pstr = (char *)pModule + pModule->entry_table;
 147     ordinal = 1;
 148     while (*pstr)
 149     {
 150         DUMP( "Bundle %d-%d: %02x\n", ordinal, ordinal + *pstr - 1, pstr[1]);
 151         if (!pstr[1])
 152         {
 153             ordinal += *pstr;
 154             pstr += 2;
 155         }
 156         else if ((BYTE)pstr[1] == 0xff)  /* moveable */
 157         {
 158             i = *pstr;
 159             pstr += 2;
 160             while (i--)
 161             {
 162                 DUMP( "%d: %02x:%04x (moveable)\n",
 163                       ordinal++, pstr[3], *(WORD *)(pstr + 4) );
 164                 pstr += 6;
 165             }
 166         }
 167         else  /* fixed */
 168         {
 169             i = *pstr;
 170             pstr += 2;
 171             while (i--)
 172             {
 173                 DUMP( "%d: %04x (fixed)\n",
 174                       ordinal++, *(WORD *)(pstr + 1) );
 175                 pstr += 3;
 176             }
 177         }
 178     }
 179
 180     /* Dump the non-resident names table */
 181     DUMP( "---\n" );
 182     DUMP( "Non-resident names table:\n" );
 183     if (pModule->nrname_handle)
 184     {
 185         pstr = (char *)GlobalLock16( pModule->nrname_handle );
 186         while (*pstr)
 187         {
 188             DUMP( "%*.*s: %d\n", *pstr, *pstr, pstr + 1,
 189                    *(WORD *)(pstr + *pstr + 1) );
 190             pstr += *pstr + 1 + sizeof(WORD);
 191         }
 192     }
 193     DUMP( "\n" );
 194 }
 195
 196
 197 /***********************************************************************
 198  *           NE_WalkModules
 199  *
 200  * Walk the module list and print the modules.
 201  */
 202 void NE_WalkModules(void)
 203 {
 204     HMODULE16 hModule = hFirstModule;
 205     MSG( "Module Flags Name\n" );
 206     while (hModule)
 207     {
 208         NE_MODULE *pModule = NE_GetPtr( hModule );
 209         if (!pModule)
 210         {
 211             MSG( "Bad module %04x in list\n", hModule );
 212             return;
 213         }
 214         MSG( " %04x  %04x  %.*s\n", hModule, pModule->flags,
 215                  *((char *)pModule + pModule->name_table),
 216                  (char *)pModule + pModule->name_table + 1 );
 217         hModule = pModule->next;
 218     }
 219 }
 220
 221
 222 /**********************************************************************
 223  *           NE_RegisterModule
 224  */
 225 void NE_RegisterModule( NE_MODULE *pModule )
 226 {
 227     pModule->next = hFirstModule;
 228     hFirstModule = pModule->self;
 229 }
 230
 231
 232 /***********************************************************************
 233  *           NE_GetOrdinal
 234  *
 235  * Lookup the ordinal for a given name.
 236  */
 237 WORD NE_GetOrdinal( HMODULE16 hModule, const char *name )
 238 {
 239     unsigned char buffer[256], *cpnt;
 240     BYTE len;
 241     NE_MODULE *pModule;
 242
 243     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 244     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 245
 246     TRACE( module, "(%04x,'%s')\n", hModule, name );
 247
 248       /* First handle names of the form '#xxxx' */
 249
 250     if (name[0] == '#') return atoi( name + 1 );
 251
 252       /* Now copy and uppercase the string */
 253
 254     strcpy( buffer, name );
 255     CharUpperA( buffer );
 256     len = strlen( buffer );
 257
 258       /* First search the resident names */
 259
 260     cpnt = (char *)pModule + pModule->name_table;
 261
 262       /* Skip the first entry (module name) */
 263     cpnt += *cpnt + 1 + sizeof(WORD);
 264     while (*cpnt)
 265     {
 266         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 267         {
 268             TRACE(module, "  Found: ordinal=%d\n",
 269                             *(WORD *)(cpnt + *cpnt + 1) );
 270             return *(WORD *)(cpnt + *cpnt + 1);
 271         }
 272         cpnt += *cpnt + 1 + sizeof(WORD);
 273     }
 274
 275       /* Now search the non-resident names table */
 276
 277     if (!pModule->nrname_handle) return 0;  /* No non-resident table */
 278     cpnt = (char *)GlobalLock16( pModule->nrname_handle );
 279
 280       /* Skip the first entry (module description string) */
 281     cpnt += *cpnt + 1 + sizeof(WORD);
 282     while (*cpnt)
 283     {
 284         if (((BYTE)*cpnt == len) && !memcmp( cpnt+1, buffer, len ))
 285         {
 286             TRACE(module, "  Found: ordinal=%d\n",
 287                             *(WORD *)(cpnt + *cpnt + 1) );
 288             return *(WORD *)(cpnt + *cpnt + 1);
 289         }
 290         cpnt += *cpnt + 1 + sizeof(WORD);
 291     }
 292     return 0;
 293 }
 294
 295
 296 /***********************************************************************
 297  *           NE_GetEntryPoint   (WPROCS.27)
 298  *
 299  * Return the entry point for a given ordinal.
 300  */
 301 FARPROC16 NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal )
 302 {
 303     return NE_GetEntryPointEx( hModule, ordinal, TRUE );
 304 }
 305 FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop )
 306 {
 307     NE_MODULE *pModule;
 308     WORD curOrdinal = 1;
 309     BYTE *p;
 310     WORD sel, offset;
 311
 312     if (!(pModule = NE_GetPtr( hModule ))) return 0;
 313     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 314
 315     p = (BYTE *)pModule + pModule->entry_table;
 316     while (*p && (curOrdinal + *p <= ordinal))
 317     {
 318           /* Skipping this bundle */
 319         curOrdinal += *p;
 320         switch(p[1])
 321         {
 322             case 0:    p += 2; break;  /* unused */
 323             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 324             default:   p += 2 + *p * 3; break;  /* fixed */
 325         }
 326     }
 327     if (!*p) return 0;
 328
 329     switch(p[1])
 330     {
 331         case 0:  /* unused */
 332             return 0;
 333         case 0xff:  /* moveable */
 334             p += 2 + 6 * (ordinal - curOrdinal);
 335             sel = p[3];
 336             offset = *(WORD *)(p + 4);
 337             break;
 338         default:  /* fixed */
 339             sel = p[1];
 340             p += 2 + 3 * (ordinal - curOrdinal);
 341             offset = *(WORD *)(p + 1);
 342             break;
 343     }
 344
 345     if (sel == 0xfe) sel = 0xffff;  /* constant entry */
 346     else sel = GlobalHandleToSel16(NE_SEG_TABLE(pModule)[sel-1].hSeg);
 347     if (sel==0xffff)
 348         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 349     if (!snoop || !fnSNOOP16_GetProcAddress16)
 350         return (FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset );
 351     else
 352         return (FARPROC16)fnSNOOP16_GetProcAddress16(hModule,ordinal,(FARPROC16)PTR_SEG_OFF_TO_SEGPTR( sel, offset ));
 353 }
 354
 355
 356 /***********************************************************************
 357  *           NE_SetEntryPoint
 358  *
 359  * Change the value of an entry point. Use with caution!
 360  * It can only change the offset value, not the selector.
 361  */
 362 BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset )
 363 {
 364     NE_MODULE *pModule;
 365     WORD curOrdinal = 1;
 366     BYTE *p;
 367
 368     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
 369     assert( !(pModule->flags & NE_FFLAGS_WIN32) );
 370
 371     p = (BYTE *)pModule + pModule->entry_table;
 372     while (*p && (curOrdinal + *p <= ordinal))
 373     {
 374           /* Skipping this bundle */
 375         curOrdinal += *p;
 376         switch(p[1])
 377         {
 378             case 0:    p += 2; break;  /* unused */
 379             case 0xff: p += 2 + *p * 6; break;  /* moveable */
 380             default:   p += 2 + *p * 3; break;  /* fixed */
 381         }
 382     }
 383     if (!*p) return FALSE;
 384
 385     switch(p[1])
 386     {
 387         case 0:  /* unused */
 388             return FALSE;
 389         case 0xff:  /* moveable */
 390             p += 2 + 6 * (ordinal - curOrdinal);
 391             *(WORD *)(p + 4) = offset;
 392             break;
 393         default:  /* fixed */
 394             p += 2 + 3 * (ordinal - curOrdinal);
 395             *(WORD *)(p + 1) = offset;
 396             break;
 397     }
 398     return TRUE;
 399 }
 400
 401
 402 /***********************************************************************
 403  *           NE_OpenFile
 404  */
 405 HANDLE NE_OpenFile( NE_MODULE *pModule )
 406 {
 407     char *name;
 408
 409     static HANDLE cachedfd = -1;
 410
 411     TRACE( module, "(%p) cache: mod=%p fd=%d\n",
 412            pModule, pCachedModule, cachedfd );
 413     if (pCachedModule == pModule) return cachedfd;
 414     CloseHandle( cachedfd );
 415     pCachedModule = pModule;
 416     name = NE_MODULE_NAME( pModule );
 417     if ((cachedfd = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
 418                                    NULL, OPEN_EXISTING, 0, -1 )) == -1)
 419         MSG( "Can't open file '%s' for module %04x\n", name, pModule->self );
 420     else
 421         /* FIXME: should not be necessary */
 422         cachedfd = ConvertToGlobalHandle(cachedfd);
 423     TRACE(module, "opened '%s' -> %d\n",
 424                     name, cachedfd );
 425     return cachedfd;
 426 }
 427
 428
 429 /***********************************************************************
 430  *           NE_LoadExeHeader
 431  */
 432 static HMODULE16 NE_LoadExeHeader( HFILE16 hFile, OFSTRUCT *ofs )
 433 {
 434     IMAGE_DOS_HEADER mz_header;
 435     IMAGE_OS2_HEADER ne_header;
 436     int size;
 437     HMODULE16 hModule;
 438     NE_MODULE *pModule;
 439     BYTE *pData;
 440     char *buffer, *fastload = NULL;
 441     int fastload_offset = 0, fastload_length = 0;
 442
 443   /* Read a block from either the file or the fast-load area. */
 444 #define READ(offset,size,buffer) \
 445        ((fastload && ((offset) >= fastload_offset) && \
 446          ((offset)+(size) <= fastload_offset+fastload_length)) ? \
 447         (memcpy( buffer, fastload+(offset)-fastload_offset, (size) ), TRUE) : \
 448         (_llseek16( hFile, (offset), SEEK_SET), \
 449          _hread16( hFile, (buffer), (size) ) == (size)))
 450
 451     _llseek16( hFile, 0, SEEK_SET );
 452     if ((_hread16(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) ||
 453         (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 454         return (HMODULE16)11;  /* invalid exe */
 455
 456     _llseek16( hFile, mz_header.e_lfanew, SEEK_SET );
 457     if (_hread16( hFile, &ne_header, sizeof(ne_header) ) != sizeof(ne_header))
 458         return (HMODULE16)11;  /* invalid exe */
 459
 460     if (ne_header.ne_magic == IMAGE_NT_SIGNATURE) return (HMODULE16)21;  /* win32 exe */
 461     if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE) return (HMODULE16)11;  /* invalid exe */
 462
 463     if (ne_header.ne_magic == IMAGE_OS2_SIGNATURE_LX) {
 464       MSG("Sorry, this is an OS/2 linear executable (LX) file !\n");
 465       return (HMODULE16)12;
 466     }
 467
 468     /* We now have a valid NE header */
 469
 470     size = sizeof(NE_MODULE) +
 471              /* segment table */
 472            ne_header.n_segment_tab * sizeof(SEGTABLEENTRY) +
 473              /* resource table */
 474            ne_header.rname_tab_offset - ne_header.resource_tab_offset +
 475              /* resident names table */
 476            ne_header.moduleref_tab_offset - ne_header.rname_tab_offset +
 477              /* module ref table */
 478            ne_header.n_mod_ref_tab * sizeof(WORD) +
 479              /* imported names table */
 480            ne_header.entry_tab_offset - ne_header.iname_tab_offset +
 481              /* entry table length */
 482            ne_header.entry_tab_length +
 483              /* loaded file info */
 484            sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 485
 486     hModule = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, size );
 487     if (!hModule) return (HMODULE16)11;  /* invalid exe */
 488     FarSetOwner16( hModule, hModule );
 489     pModule = (NE_MODULE *)GlobalLock16( hModule );
 490     memcpy( pModule, &ne_header, sizeof(ne_header) );
 491     pModule->count = 0;
 492     /* check *programs* for default minimal stack size */
 493     if ( (!(pModule->flags & NE_FFLAGS_LIBMODULE))
 494                 && (pModule->stack_size < 0x1400) )
 495                 pModule->stack_size = 0x1400;
 496     pModule->module32 = 0;
 497     pModule->self = hModule;
 498     pModule->self_loading_sel = 0;
 499     pData = (BYTE *)(pModule + 1);
 500
 501     /* Clear internal Wine flags in case they are set in the EXE file */
 502
 503     pModule->flags &= ~(NE_FFLAGS_BUILTIN | NE_FFLAGS_WIN32);
 504
 505     /* Read the fast-load area */
 506
 507     if (ne_header.additional_flags & NE_AFLAGS_FASTLOAD)
 508     {
 509         fastload_offset=ne_header.fastload_offset<<ne_header.align_shift_count;
 510         fastload_length=ne_header.fastload_length<<ne_header.align_shift_count;
 511         TRACE(module, "Using fast-load area offset=%x len=%d\n",
 512                         fastload_offset, fastload_length );
 513         if ((fastload = HeapAlloc( SystemHeap, 0, fastload_length )) != NULL)
 514         {
 515             _llseek16( hFile, fastload_offset, SEEK_SET);
 516             if (_hread16(hFile, fastload, fastload_length) != fastload_length)
 517             {
 518                 HeapFree( SystemHeap, 0, fastload );
 519                 WARN( module, "Error reading fast-load area!\n");
 520                 fastload = NULL;
 521             }
 522         }
 523     }
 524
 525     /* Get the segment table */
 526
 527     pModule->seg_table = (int)pData - (int)pModule;
 528     buffer = HeapAlloc( SystemHeap, 0, ne_header.n_segment_tab *
 529                                       sizeof(struct ne_segment_table_entry_s));
 530     if (buffer)
 531     {
 532         int i;
 533         struct ne_segment_table_entry_s *pSeg;
 534
 535         if (!READ( mz_header.e_lfanew + ne_header.segment_tab_offset,
 536              ne_header.n_segment_tab * sizeof(struct ne_segment_table_entry_s),
 537              buffer ))
 538         {
 539             HeapFree( SystemHeap, 0, buffer );
 540             if (fastload) HeapFree( SystemHeap, 0, fastload );
 541             GlobalFree16( hModule );
 542             return (HMODULE16)11;  /* invalid exe */
 543         }
 544         pSeg = (struct ne_segment_table_entry_s *)buffer;
 545         for (i = ne_header.n_segment_tab; i > 0; i--, pSeg++)
 546         {
 547             memcpy( pData, pSeg, sizeof(*pSeg) );
 548             pData += sizeof(SEGTABLEENTRY);
 549         }
 550         HeapFree( SystemHeap, 0, buffer );
 551     }
 552     else
 553     {
 554         if (fastload) HeapFree( SystemHeap, 0, fastload );
 555         GlobalFree16( hModule );
 556         return (HMODULE16)11;  /* invalid exe */
 557     }
 558
 559     /* Get the resource table */
 560
 561     if (ne_header.resource_tab_offset < ne_header.rname_tab_offset)
 562     {
 563         pModule->res_table = (int)pData - (int)pModule;
 564         if (!READ(mz_header.e_lfanew + ne_header.resource_tab_offset,
 565                   ne_header.rname_tab_offset - ne_header.resource_tab_offset,
 566                   pData )) return (HMODULE16)11;  /* invalid exe */
 567         pData += ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 568         NE_InitResourceHandler( hModule );
 569     }
 570     else pModule->res_table = 0;  /* No resource table */
 571
 572     /* Get the resident names table */
 573
 574     pModule->name_table = (int)pData - (int)pModule;
 575     if (!READ( mz_header.e_lfanew + ne_header.rname_tab_offset,
 576                ne_header.moduleref_tab_offset - ne_header.rname_tab_offset,
 577                pData ))
 578     {
 579         if (fastload) HeapFree( SystemHeap, 0, fastload );
 580         GlobalFree16( hModule );
 581         return (HMODULE16)11;  /* invalid exe */
 582     }
 583     pData += ne_header.moduleref_tab_offset - ne_header.rname_tab_offset;
 584
 585     /* Get the module references table */
 586
 587     if (ne_header.n_mod_ref_tab > 0)
 588     {
 589         pModule->modref_table = (int)pData - (int)pModule;
 590         if (!READ( mz_header.e_lfanew + ne_header.moduleref_tab_offset,
 591                   ne_header.n_mod_ref_tab * sizeof(WORD),
 592                   pData ))
 593         {
 594             if (fastload) HeapFree( SystemHeap, 0, fastload );
 595             GlobalFree16( hModule );
 596             return (HMODULE16)11;  /* invalid exe */
 597         }
 598         pData += ne_header.n_mod_ref_tab * sizeof(WORD);
 599     }
 600     else pModule->modref_table = 0;  /* No module references */
 601
 602     /* Get the imported names table */
 603
 604     pModule->import_table = (int)pData - (int)pModule;
 605     if (!READ( mz_header.e_lfanew + ne_header.iname_tab_offset,
 606                ne_header.entry_tab_offset - ne_header.iname_tab_offset,
 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_offset - ne_header.iname_tab_offset;
 614
 615     /* Get the entry table */
 616
 617     pModule->entry_table = (int)pData - (int)pModule;
 618     if (!READ( mz_header.e_lfanew + ne_header.entry_tab_offset,
 619                ne_header.entry_tab_length,
 620                pData ))
 621     {
 622         if (fastload) HeapFree( SystemHeap, 0, fastload );
 623         GlobalFree16( hModule );
 624         return (HMODULE16)11;  /* invalid exe */
 625     }
 626     pData += ne_header.entry_tab_length;
 627
 628     /* Store the filename information */
 629
 630     pModule->fileinfo = (int)pData - (int)pModule;
 631     size = sizeof(OFSTRUCT)-sizeof(ofs->szPathName)+strlen(ofs->szPathName)+1;
 632     memcpy( pData, ofs, size );
 633     ((OFSTRUCT *)pData)->cBytes = size - 1;
 634     pData += size;
 635
 636     /* Free the fast-load area */
 637
 638 #undef READ
 639     if (fastload) HeapFree( SystemHeap, 0, fastload );
 640
 641     /* Get the non-resident names table */
 642
 643     if (ne_header.nrname_tab_length)
 644     {
 645         pModule->nrname_handle = GLOBAL_Alloc( 0, ne_header.nrname_tab_length,
 646                                                hModule, FALSE, FALSE, FALSE );
 647         if (!pModule->nrname_handle)
 648         {
 649             GlobalFree16( hModule );
 650             return (HMODULE16)11;  /* invalid exe */
 651         }
 652         buffer = GlobalLock16( pModule->nrname_handle );
 653         _llseek16( hFile, ne_header.nrname_tab_offset, SEEK_SET );
 654         if (_hread16( hFile, buffer, ne_header.nrname_tab_length )
 655               != ne_header.nrname_tab_length)
 656         {
 657             GlobalFree16( pModule->nrname_handle );
 658             GlobalFree16( hModule );
 659             return (HMODULE16)11;  /* invalid exe */
 660         }
 661     }
 662     else pModule->nrname_handle = 0;
 663
 664     /* Allocate a segment for the implicitly-loaded DLLs */
 665
 666     if (pModule->modref_count)
 667     {
 668         pModule->dlls_to_init = GLOBAL_Alloc(GMEM_ZEROINIT,
 669                                     (pModule->modref_count+1)*sizeof(HMODULE16),
 670                                     hModule, FALSE, FALSE, FALSE );
 671         if (!pModule->dlls_to_init)
 672         {
 673             if (pModule->nrname_handle) GlobalFree16( pModule->nrname_handle );
 674             GlobalFree16( hModule );
 675             return (HMODULE16)11;  /* invalid exe */
 676         }
 677     }
 678     else pModule->dlls_to_init = 0;
 679
 680     NE_RegisterModule( pModule );
 681     if (fnSNOOP16_RegisterDLL)
 682         fnSNOOP16_RegisterDLL(pModule,ofs->szPathName);
 683     return hModule;
 684 }
 685
 686
 687 /***********************************************************************
 688  *           NE_LoadDLLs
 689  *
 690  * Load all DLLs implicitly linked to a module.
 691  */
 692 static BOOL NE_LoadDLLs( NE_MODULE *pModule )
 693 {
 694     int i;
 695     WORD *pModRef = (WORD *)((char *)pModule + pModule->modref_table);
 696     WORD *pDLLs = (WORD *)GlobalLock16( pModule->dlls_to_init );
 697
 698     for (i = 0; i < pModule->modref_count; i++, pModRef++)
 699     {
 700         char buffer[260];
 701         BYTE *pstr = (BYTE *)pModule + pModule->import_table + *pModRef;
 702         memcpy( buffer, pstr + 1, *pstr );
 703        *(buffer + *pstr) = 0; /* terminate it */
 704         if (!strchr(buffer,'.')) /* only append .dll if no extension yet.
 705                                    handles a request for krnl386.exe*/
 706             strcpy( buffer + *pstr, ".dll" );
 707         TRACE(module, "Loading '%s'\n", buffer );
 708         if (!(*pModRef = GetModuleHandle16( buffer )))
 709         {
 710             /* If the DLL is not loaded yet, load it and store */
 711             /* its handle in the list of DLLs to initialize.   */
 712             HMODULE16 hDLL;
 713
 714             if ((hDLL = NE_LoadModule( buffer, TRUE )) == 2)
 715             {
 716                 /* file not found */
 717                 char *p;
 718
 719                 /* Try with prepending the path of the current module */
 720                 GetModuleFileName16( pModule->self, buffer, sizeof(buffer) );
 721                 if (!(p = strrchr( buffer, '\\' ))) p = buffer;
 722                 memcpy( p + 1, pstr + 1, *pstr );
 723                 strcpy( p + 1 + *pstr, ".dll" );
 724                 hDLL = NE_LoadModule( buffer, TRUE );
 725             }
 726             if (hDLL < 32)
 727             {
 728                 /* FIXME: cleanup what was done */
 729
 730                 MSG( "Could not load '%s' required by '%.*s', error=%d\n",
 731                      buffer, *((BYTE*)pModule + pModule->name_table),
 732                      (char *)pModule + pModule->name_table + 1, hDLL );
 733                 return FALSE;
 734             }
 735             *pModRef = GetExePtr( hDLL );
 736             *pDLLs++ = *pModRef;
 737         }
 738         else  /* Increment the reference count of the DLL */
 739         {
 740             NE_MODULE *pOldDLL = NE_GetPtr( *pModRef );
 741             if (pOldDLL) pOldDLL->count++;
 742         }
 743     }
 744     return TRUE;
 745 }
 746
 747
 748 /**********************************************************************
 749  *          NE_LoadFileModule
 750  *
 751  * Load first instance of NE module from file.
 752  * (Note: caller is responsible for ensuring the module isn't
 753  *        already loaded!)
 754  */
 755 static HINSTANCE16 NE_LoadFileModule( HFILE16 hFile, OFSTRUCT *ofs,
 756                                       BOOL implicit )
 757 {
 758     HINSTANCE16 hInstance;
 759     HMODULE16 hModule;
 760     NE_MODULE *pModule;
 761
 762     /* Create the module structure */
 763
 764     hModule = NE_LoadExeHeader( hFile, ofs );
 765     if (hModule < 32) return hModule;
 766     pModule = NE_GetPtr( hModule );
 767
 768     /* Allocate the segments for this module */
 769
 770     if (!NE_CreateSegments( pModule ) ||
 771         !(hInstance = NE_CreateInstance( pModule, NULL, FALSE )))
 772     {
 773         GlobalFreeAll16( hModule );
 774         return 8;  /* Insufficient memory */
 775     }
 776
 777     /* Load the referenced DLLs */
 778
 779     if (!NE_LoadDLLs( pModule ))
 780         return 2;  /* File not found (FIXME: free everything) */
 781
 782     /* Load the segments */
 783
 784     NE_LoadAllSegments( pModule );
 785
 786     /* Fixup the functions prologs */
 787
 788     NE_FixupPrologs( pModule );
 789
 790     /* Make sure the usage count is 1 on the first loading of  */
 791     /* the module, even if it contains circular DLL references */
 792
 793     pModule->count = 1;
 794
 795     /* Call initialization rountines for all loaded DLLs. Note that
 796      * when we load implicitly linked DLLs this will be done by InitTask().
 797      */
 798
 799     if (!implicit && (pModule->flags & NE_FFLAGS_LIBMODULE))
 800         NE_InitializeDLLs( hModule );
 801
 802     return hInstance;
 803 }
 804
 805 /**********************************************************************
 806  *          NE_LoadModule
 807  *
 808  * Load first instance of NE module, deciding whether to use
 809  * built-in module or load module from file.
 810  * (Note: caller is responsible for ensuring the module isn't
 811  *        already loaded!)
 812  */
 813 HINSTANCE16 NE_LoadModule( LPCSTR name, BOOL implicit )
 814 {
 815     HINSTANCE16 hInstance;
 816     HMODULE16 hModule;
 817     HFILE16 hFile;
 818     OFSTRUCT ofs;
 819
 820     /* Try to load the built-in first if not disabled */
 821
 822     if ((hModule = fnBUILTIN_LoadModule( name, FALSE ))) return hModule;
 823
 824     if ((hFile = OpenFile16( name, &ofs, OF_READ )) == HFILE_ERROR16)
 825     {
 826         /* Now try the built-in even if disabled */
 827         if ((hModule = fnBUILTIN_LoadModule( name, TRUE )))
 828         {
 829             MSG( "Could not load Windows DLL '%s', using built-in module.\n",
 830                  name );
 831             return hModule;
 832         }
 833         return 2;  /* File not found */
 834     }
 835
 836     hInstance = NE_LoadFileModule( hFile, &ofs, implicit );
 837     _lclose16( hFile );
 838
 839     return hInstance;
 840 }
 841
 842 /**********************************************************************
 843  *          LoadModule16    (KERNEL.45)
 844  */
 845 HINSTANCE16 WINAPI LoadModule16( LPCSTR name, LPVOID paramBlock )
 846 {
 847     BOOL lib_only = !paramBlock || (paramBlock == (LPVOID)-1);
 848     LOADPARAMS16 *params;
 849     LPSTR cmd_line, new_cmd_line;
 850     LPCVOID env = NULL;
 851     STARTUPINFOA startup;
 852     PROCESS_INFORMATION info;
 853     HINSTANCE16 hInstance, hPrevInstance = 0;
 854     HMODULE16 hModule;
 855     NE_MODULE *pModule;
 856     PDB *pdb;
 857
 858     /* Load module */
 859
 860     if ( (hModule = GetModuleFromPath(name) ) != 0 )
 861     {
 862         /* Special case: second instance of an already loaded NE module */
 863
 864         if ( !( pModule = NE_GetPtr( hModule ) ) ) return (HINSTANCE16)11;
 865         if ( pModule->module32 ) return (HINSTANCE16)21;
 866
 867         hInstance = NE_CreateInstance( pModule, &hPrevInstance, lib_only );
 868         if ( hInstance != hPrevInstance )  /* not a library */
 869             NE_LoadSegment( pModule, pModule->dgroup );
 870
 871         pModule->count++;
 872     }
 873     else
 874     {
 875         /* Main case: load first instance of NE module */
 876
 877         if ( (hInstance = NE_LoadModule( name, FALSE )) < 32 );
 878             return hInstance;
 879
 880         if ( !(pModule = NE_GetPtr( hInstance )) )
 881             return (HINSTANCE16)11;
 882     }
 883
 884     /* If library module, we're finished */
 885
 886     if ( ( pModule->flags & NE_FFLAGS_LIBMODULE ) || lib_only )
 887         return hInstance;
 888
 889     /* Create a task for this instance */
 890
 891     pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
 892
 893     params = (LOADPARAMS16 *)paramBlock;
 894     cmd_line = (LPSTR)PTR_SEG_TO_LIN( params->cmdLine );
 895     if (!cmd_line) cmd_line = "";
 896     else if (*cmd_line) cmd_line++;  /* skip the length byte */
 897
 898     if (!(new_cmd_line = HeapAlloc( GetProcessHeap(), 0,
 899                                     strlen(cmd_line)+strlen(name)+2 )))
 900         return 0;
 901     strcpy( new_cmd_line, name );
 902     strcat( new_cmd_line, " " );
 903     strcat( new_cmd_line, cmd_line );
 904
 905     if (params->hEnvironment) env = GlobalLock16( params->hEnvironment );
 906
 907     memset( &info, '\0', sizeof(info) );
 908     memset( &startup, '\0', sizeof(startup) );
 909     startup.cb = sizeof(startup);
 910     if (params->showCmd)
 911     {
 912         startup.dwFlags = STARTF_USESHOWWINDOW;
 913         startup.wShowWindow = ((UINT16 *)PTR_SEG_TO_LIN(params->showCmd))[1];
 914     }
 915
 916     pdb = PROCESS_Create( pModule, new_cmd_line, env,
 917                           hInstance, hPrevInstance, TRUE, &startup, &info );
 918
 919     CloseHandle( info.hThread );
 920     CloseHandle( info.hProcess );
 921
 922     if (params->hEnvironment) GlobalUnlock16( params->hEnvironment );
 923     HeapFree( GetProcessHeap(), 0, new_cmd_line );
 924
 925     /* Start task */
 926
 927     if (pdb) TASK_StartTask( pdb->task );
 928
 929     return hInstance;
 930 }
 931
 932 /**********************************************************************
 933  *          NE_CreateProcess
 934  */
 935 BOOL NE_CreateProcess( HFILE hFile, OFSTRUCT *ofs, LPCSTR cmd_line,
 936                        LPCSTR env, BOOL inherit, LPSTARTUPINFOA startup,
 937                        LPPROCESS_INFORMATION info )
 938 {
 939     HINSTANCE16 hInstance, hPrevInstance = 0;
 940     HMODULE16 hModule;
 941     NE_MODULE *pModule;
 942     HFILE16 hFile16;
 943
 944     /* Special case: second instance of an already loaded NE module */
 945
 946     if ( ( hModule = GetModuleFromPath( ofs->szPathName ) ) != 0 )
 947     {
 948         if (   !( pModule = NE_GetPtr( hModule) )
 949             ||  ( pModule->flags & NE_FFLAGS_LIBMODULE )
 950             ||  pModule->module32 )
 951         {
 952             SetLastError( ERROR_BAD_FORMAT );
 953             return FALSE;
 954         }
 955
 956         hInstance = NE_CreateInstance( pModule, &hPrevInstance, FALSE );
 957         if ( hInstance != hPrevInstance )  /* not a library */
 958             NE_LoadSegment( pModule, pModule->dgroup );
 959
 960         pModule->count++;
 961     }
 962
 963     /* Main case: load first instance of NE module */
 964     else
 965     {
 966         /* If we didn't get a file handle, return */
 967
 968         if ( hFile == HFILE_ERROR )
 969             return FALSE;
 970
 971         /* Allocate temporary HFILE16 for NE_LoadFileModule */
 972
 973         if (!DuplicateHandle( GetCurrentProcess(), hFile,
 974                               GetCurrentProcess(), &hFile,
 975                               0, FALSE, DUPLICATE_SAME_ACCESS ))
 976         {
 977             SetLastError( ERROR_INVALID_HANDLE );
 978             return FALSE;
 979         }
 980         hFile16 = FILE_AllocDosHandle( hFile );
 981
 982         /* Load module */
 983
 984         hInstance = NE_LoadFileModule( hFile16, ofs, TRUE );
 985         _lclose16( hFile16 );
 986
 987         if ( hInstance < 32 )
 988         {
 989             SetLastError( hInstance );
 990             return FALSE;
 991         }
 992
 993         if (   !( pModule = NE_GetPtr( hInstance ) )
 994             ||  ( pModule->flags & NE_FFLAGS_LIBMODULE) )
 995         {
 996             /* FIXME: cleanup */
 997             SetLastError( ERROR_BAD_FORMAT );
 998             return FALSE;
 999         }
1000     }
1001
1002     /* Create a task for this instance */
1003
1004     pModule->flags |= NE_FFLAGS_GUI;  /* FIXME: is this necessary? */
1005
1006     if ( !PROCESS_Create( pModule, cmd_line, env,
1007                           hInstance, hPrevInstance, inherit, startup, info ) )
1008         return FALSE;
1009
1010     return TRUE;
1011 }
1012
1013 /***********************************************************************
1014  *           LoadLibrary16   (KERNEL.95)
1015  */
1016 HINSTANCE16 WINAPI LoadLibrary16( LPCSTR libname )
1017 {
1018     char dllname[256], *p;
1019
1020     TRACE( module, "(%08x) %s\n", (int)libname, libname );
1021
1022     /* Append .DLL to name if no extension present */
1023
1024     strcpy( dllname, libname );
1025     if (!(p = strrchr( dllname, '.')) || strchr( p, '/' ) || strchr( p, '\\'))
1026         strcat( dllname, ".DLL" );
1027
1028     /* Load library module */
1029
1030     return LoadModule16( dllname, (LPVOID)-1 );
1031 }
1032
1033
1034 /**********************************************************************
1035  *          MODULE_CallWEP
1036  *
1037  * Call a DLL's WEP, allowing it to shut down.
1038  * FIXME: we always pass the WEP WEP_FREE_DLL, never WEP_SYSTEM_EXIT
1039  */
1040 static BOOL16 MODULE_CallWEP( HMODULE16 hModule )
1041 {
1042     FARPROC16 WEP = (FARPROC16)0;
1043     WORD ordinal = NE_GetOrdinal( hModule, "WEP" );
1044
1045     if (ordinal) WEP = NE_GetEntryPoint( hModule, ordinal );
1046     if (!WEP)
1047     {
1048         WARN(module, "module %04x doesn't have a WEP\n", hModule );
1049         return FALSE;
1050     }
1051     return Callbacks->CallWindowsExitProc( WEP, WEP_FREE_DLL );
1052 }
1053
1054
1055 /**********************************************************************
1056  *          NE_FreeModule
1057  *
1058  * Implementation of FreeModule16().
1059  */
1060 static BOOL16 NE_FreeModule( HMODULE16 hModule, BOOL call_wep )
1061 {
1062     HMODULE16 *hPrevModule;
1063     NE_MODULE *pModule;
1064     HMODULE16 *pModRef;
1065     int i;
1066
1067     if (!(pModule = NE_GetPtr( hModule ))) return FALSE;
1068     hModule = pModule->self;
1069
1070     TRACE( module, "%04x count %d\n", hModule, pModule->count );
1071
1072     if (((INT16)(--pModule->count)) > 0 ) return TRUE;
1073     else pModule->count = 0;
1074
1075     if (pModule->flags & NE_FFLAGS_BUILTIN)
1076         return FALSE;  /* Can't free built-in module */
1077
1078     if (call_wep)
1079     {
1080         if (pModule->flags & NE_FFLAGS_LIBMODULE)
1081         {
1082             TDB *pTask = (TDB *)GlobalLock16( GetCurrentTask() );
1083             MODULE_CallWEP( hModule );
1084
1085             /* Free the objects owned by the DLL module */
1086
1087             if (pTask && pTask->userhandler)
1088                 pTask->userhandler( hModule, USIG_DLL_UNLOAD, 0,
1089                                     pTask->hInstance, pTask->hQueue );
1090         }
1091         else
1092             call_wep = FALSE;  /* We are freeing a task -> no more WEPs */
1093     }
1094
1095
1096     /* Clear magic number just in case */
1097
1098     pModule->magic = pModule->self = 0;
1099
1100       /* Remove it from the linked list */
1101
1102     hPrevModule = &hFirstModule;
1103     while (*hPrevModule && (*hPrevModule != hModule))
1104     {
1105         hPrevModule = &(NE_GetPtr( *hPrevModule ))->next;
1106     }
1107     if (*hPrevModule) *hPrevModule = pModule->next;
1108
1109     /* Free the referenced modules */
1110
1111     pModRef = (HMODULE16*)NE_MODULE_TABLE( pModule );
1112     for (i = 0; i < pModule->modref_count; i++, pModRef++)
1113     {
1114         NE_FreeModule( *pModRef, call_wep );
1115     }
1116
1117     /* Free the module storage */
1118
1119     GlobalFreeAll16( hModule );
1120
1121     /* Remove module from cache */
1122
1123     if (pCachedModule == pModule) pCachedModule = NULL;
1124     return TRUE;
1125 }
1126
1127
1128 /**********************************************************************
1129  *          FreeModule16    (KERNEL.46)
1130  */
1131 BOOL16 WINAPI FreeModule16( HMODULE16 hModule )
1132 {
1133     return NE_FreeModule( hModule, TRUE );
1134 }
1135
1136
1137 /***********************************************************************
1138  *           FreeLibrary16   (KERNEL.96)
1139  */
1140 void WINAPI FreeLibrary16( HINSTANCE16 handle )
1141 {
1142     TRACE(module,"%04x\n", handle );
1143     FreeModule16( handle );
1144 }
1145
1146
1147 /**********************************************************************
1148  *          GetModuleName    (KERNEL.27)
1149  */
1150 BOOL16 WINAPI GetModuleName16( HINSTANCE16 hinst, LPSTR buf, INT16 count )
1151 {
1152     NE_MODULE *pModule;
1153     BYTE *p;
1154
1155     if (!(pModule = NE_GetPtr( hinst ))) return FALSE;
1156     p = (BYTE *)pModule + pModule->name_table;
1157     if (count > *p) count = *p + 1;
1158     if (count > 0)
1159     {
1160         memcpy( buf, p + 1, count - 1 );
1161         buf[count-1] = '\0';
1162     }
1163     return TRUE;
1164 }
1165
1166
1167 /**********************************************************************
1168  *          GetModuleUsage    (KERNEL.48)
1169  */
1170 INT16 WINAPI GetModuleUsage16( HINSTANCE16 hModule )
1171 {
1172     NE_MODULE *pModule = NE_GetPtr( hModule );
1173     return pModule ? pModule->count : 0;
1174 }
1175
1176
1177 /**********************************************************************
1178  *          GetExpWinVer    (KERNEL.167)
1179  */
1180 WORD WINAPI GetExpWinVer16( HMODULE16 hModule )
1181 {
1182     NE_MODULE *pModule = NE_GetPtr( hModule );
1183     return pModule ? pModule->expected_version : 0;
1184 }
1185
1186
1187 /**********************************************************************
1188  *          GetModuleFileName16    (KERNEL.49)
1189  */
1190 INT16 WINAPI GetModuleFileName16( HINSTANCE16 hModule, LPSTR lpFileName,
1191                                   INT16 nSize )
1192 {
1193     NE_MODULE *pModule;
1194
1195     if (!hModule) hModule = GetCurrentTask();
1196     if (!(pModule = NE_GetPtr( hModule ))) return 0;
1197     lstrcpynA( lpFileName, NE_MODULE_NAME(pModule), nSize );
1198     TRACE(module, "%s\n", lpFileName );
1199     return strlen(lpFileName);
1200 }
1201
1202
1203 /**********************************************************************
1204  *          GetModuleHandle16    (KERNEL.47)
1205  *
1206  * Find a module from a module name.
1207  *
1208  * RETURNS
1209  *   LOWORD:
1210  *      the win16 module handle if found
1211  *      0 if not
1212  *   HIWORD (undocumented, see "Undocumented Windows", chapter 5):
1213  *      Always hFirstModule
1214  */
1215 DWORD WINAPI WIN16_GetModuleHandle( SEGPTR name )
1216 {
1217     if (HIWORD(name) == 0)
1218         return MAKELONG(GetExePtr( (HINSTANCE16)name), hFirstModule );
1219     return MAKELONG(GetModuleHandle16( PTR_SEG_TO_LIN(name)), hFirstModule );
1220 }
1221
1222 HMODULE16 WINAPI GetModuleHandle16( LPCSTR name )
1223 {
1224     HMODULE16 hModule = hFirstModule;
1225     LPCSTR filename, dotptr;
1226     BYTE len, *name_table;
1227
1228     if (!(filename = strrchr( name, '\\' )))
1229         filename = name;
1230     else
1231       {
1232         FIXME(module,"illegal usage of GetModuleHandle16\n");
1233         filename++;
1234       }
1235     if ((dotptr = strrchr( filename, '.' )) != NULL)
1236         len = (BYTE)(dotptr - filename);
1237     else len = strlen( filename );
1238
1239     while (hModule)
1240     {
1241         NE_MODULE *pModule = NE_GetPtr( hModule );
1242         if (!pModule) break;
1243
1244         /*
1245         modulepath = NE_MODULE_NAME(pModule);
1246         TRACE(module,"name %s modulepath %s\n",name,modulepath);
1247         if (!(modulename = strrchr( modulepath, '\\' )))
1248             modulename = modulepath;
1249         else modulename++;
1250         if (!lstrcmpiA( modulename, filename )) return hModule;
1251           */
1252
1253         name_table = (BYTE *)pModule + pModule->name_table;
1254         if ((*name_table == len) && !lstrncmpiA(filename, name_table+1, len))
1255             return hModule;
1256         hModule = pModule->next;
1257     }
1258     return 0;
1259 }
1260
1261
1262 /**********************************************************************
1263  *          ModuleFirst    (TOOLHELP.59)
1264  */
1265 BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
1266 {
1267     lpme->wNext = hFirstModule;
1268     return ModuleNext16( lpme );
1269 }
1270
1271
1272 /**********************************************************************
1273  *          ModuleNext    (TOOLHELP.60)
1274  */
1275 BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
1276 {
1277     NE_MODULE *pModule;
1278     char *name;
1279
1280     if (!lpme->wNext) return FALSE;
1281     if (!(pModule = NE_GetPtr( lpme->wNext ))) return FALSE;
1282     name = (char *)pModule + pModule->name_table;
1283     memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
1284     lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
1285     lpme->hModule = lpme->wNext;
1286     lpme->wcUsage = pModule->count;
1287     lstrcpynA( lpme->szExePath, NE_MODULE_NAME(pModule), sizeof(lpme->szExePath) );
1288     lpme->wNext = pModule->next;
1289     return TRUE;
1290 }
1291
1292
1293 /**********************************************************************
1294  *          ModuleFindName    (TOOLHELP.61)
1295  */
1296 BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
1297 {
1298     lpme->wNext = GetModuleHandle16( name );
1299     return ModuleNext16( lpme );
1300 }
1301
1302
1303 /**********************************************************************
1304  *          ModuleFindHandle    (TOOLHELP.62)
1305  */
1306 BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
1307 {
1308     hModule = GetExePtr( hModule );
1309     lpme->wNext = hModule;
1310     return ModuleNext16( lpme );
1311 }
1312 /**********************************************************************
1313  *
1314  * try to find a ne-module with the same path as a given name
1315  */
1316 static HMODULE16 GetModuleFromPath(LPCSTR name)
1317 {
1318     MODULEENTRY lookforit;
1319     NE_MODULE *pModule;
1320     DOS_FULL_NAME nametoload, nametocompare;
1321     LPCSTR modulepath;
1322
1323     if (!name)
1324       return 0;
1325     if (!DOSFS_GetFullName(name,TRUE,&nametoload))
1326       /* we don't have a full qualified path */
1327       return GetModuleHandle16( name );
1328     lookforit.dwSize=sizeof(MODULEENTRY);
1329     for (ModuleFirst16(&lookforit);
1330          ModuleNext16(&lookforit);)
1331       {
1332         pModule = NE_GetPtr( lookforit.hModule );
1333         if (!pModule)
1334           break;
1335         modulepath = NE_MODULE_NAME(pModule);
1336         if (!modulepath)
1337           break;
1338         /* Only comparing the Unix path will give valid results*/
1339         if (DOSFS_GetFullName(modulepath,TRUE,&nametocompare))
1340             if (!strcmp(nametoload.long_name,nametocompare.long_name))
1341               return lookforit.hModule;
1342       }
1343     return 0;
1344 }
1345
1346
1347
1348 /***************************************************************************
1349  *              MapHModuleLS                    (KERNEL32.520)
1350  */
1351 HMODULE16 WINAPI MapHModuleLS(HMODULE hmod) {
1352         NE_MODULE       *pModule;
1353
1354         if (!hmod)
1355                 return ((TDB*)GlobalLock16(GetCurrentTask()))->hInstance;
1356         if (!HIWORD(hmod))
1357                 return hmod; /* we already have a 16 bit module handle */
1358         pModule = (NE_MODULE*)GlobalLock16(hFirstModule);
1359         while (pModule)  {
1360                 if (pModule->module32 == hmod)
1361                         return pModule->self;
1362                 pModule = (NE_MODULE*)GlobalLock16(pModule->next);
1363         }
1364         return 0;
1365 }
1366
1367 /***************************************************************************
1368  *              MapHModuleSL                    (KERNEL32.521)
1369  */
1370 HMODULE WINAPI MapHModuleSL(HMODULE16 hmod) {
1371         NE_MODULE       *pModule;
1372
1373         if (!hmod) {
1374                 TDB *pTask = (TDB*)GlobalLock16(GetCurrentTask());
1375
1376                 hmod = pTask->hModule;
1377         }
1378         pModule = (NE_MODULE*)GlobalLock16(hmod);
1379         if (    (pModule->magic!=IMAGE_OS2_SIGNATURE)   ||
1380                 !(pModule->flags & NE_FFLAGS_WIN32)
1381         )
1382                 return 0;
1383         return pModule->module32;
1384 }
1385
1386 /***************************************************************************
1387  *              MapHInstLS                      (KERNEL32.516)
1388  */
1389 REGS_ENTRYPOINT(MapHInstLS) {
1390         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1391 }
1392
1393 /***************************************************************************
1394  *              MapHInstSL                      (KERNEL32.518)
1395  */
1396 REGS_ENTRYPOINT(MapHInstSL) {
1397         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1398 }
1399
1400 /***************************************************************************
1401  *              MapHInstLS_PN                   (KERNEL32.517)
1402  */
1403 REGS_ENTRYPOINT(MapHInstLS_PN) {
1404         if (EAX_reg(context))
1405             EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1406 }
1407
1408 /***************************************************************************
1409  *              MapHInstSL_PN                   (KERNEL32.519)
1410  */
1411 REGS_ENTRYPOINT(MapHInstSL_PN) {
1412         if (EAX_reg(context))
1413             EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1414 }
1415
1416 /***************************************************************************
1417  *              WIN16_MapHInstLS                (KERNEL.472)
1418  */
1419 VOID WINAPI WIN16_MapHInstLS( CONTEXT *context ) {
1420         EAX_reg(context) = MapHModuleLS(EAX_reg(context));
1421 }
1422
1423 /***************************************************************************
1424  *              WIN16_MapHInstSL                (KERNEL.473)
1425  */
1426 VOID WINAPI WIN16_MapHInstSL( CONTEXT *context ) {
1427         EAX_reg(context) = MapHModuleSL(EAX_reg(context));
1428 }