4 * Copyright 1993 Robert J. Amstadt
5 * Copyright 1995 Alexandre Julliard
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
23 #include "wine/port.h"
28 #include <sys/types.h>
36 #include "wine/winbase16.h"
39 #include "wine/library.h"
40 #include "kernel_private.h"
41 #include "kernel16_private.h"
42 #include "wine/debug.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(fixup);
45 WINE_DECLARE_DEBUG_CHANNEL(dll);
46 WINE_DECLARE_DEBUG_CHANNEL(module);
49 * Relocation table entry
51 struct relocation_entry_s
53 BYTE address_type; /* Relocation address type */
54 BYTE relocation_type; /* Relocation type */
55 WORD offset; /* Offset in segment to fixup */
56 WORD target1; /* Target specification */
57 WORD target2; /* Target specification */
61 * Relocation address types
63 #define NE_RADDR_LOWBYTE 0
64 #define NE_RADDR_SELECTOR 2
65 #define NE_RADDR_POINTER32 3
66 #define NE_RADDR_OFFSET16 5
67 #define NE_RADDR_POINTER48 11
68 #define NE_RADDR_OFFSET32 13
73 #define NE_RELTYPE_INTERNAL 0
74 #define NE_RELTYPE_ORDINAL 1
75 #define NE_RELTYPE_NAME 2
76 #define NE_RELTYPE_OSFIXUP 3
77 #define NE_RELFLAG_ADDITIVE 4
79 /* Self-loading modules contain this structure in their first segment */
82 WORD version; /* Must be "A0" (0x3041) */
84 FARPROC16 BootApp; /* startup procedure */
85 FARPROC16 LoadAppSeg; /* procedure to load a segment */
87 FARPROC16 MyAlloc; /* memory allocation procedure,
88 * wine must write this field */
89 FARPROC16 EntryAddrProc;
90 FARPROC16 ExitProc; /* exit procedure */
92 FARPROC16 SetOwner; /* Set Owner procedure, exported by wine */
95 #define SEL(x) ((x)|1)
97 static void NE_FixupSegmentPrologs(NE_MODULE *pModule, WORD segnum);
100 /***********************************************************************
101 * NE_GetRelocAddrName
103 static const char *NE_GetRelocAddrName( BYTE addr_type, int additive )
105 switch(addr_type & 0x7f)
107 case NE_RADDR_LOWBYTE: return additive ? "BYTE add" : "BYTE";
108 case NE_RADDR_OFFSET16: return additive ? "OFFSET16 add" : "OFFSET16";
109 case NE_RADDR_POINTER32: return additive ? "POINTER32 add" : "POINTER32";
110 case NE_RADDR_SELECTOR: return additive ? "SELECTOR add" : "SELECTOR";
111 case NE_RADDR_POINTER48: return additive ? "POINTER48 add" : "POINTER48";
112 case NE_RADDR_OFFSET32: return additive ? "OFFSET32 add" : "OFFSET32";
118 /***********************************************************************
121 static HFILE16 NE_OpenFile( NE_MODULE *pModule )
123 char *name = NE_MODULE_NAME( pModule );
124 HANDLE handle = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
125 NULL, OPEN_EXISTING, 0, 0 );
127 if (handle == INVALID_HANDLE_VALUE)
129 ERR( "Can't open file '%s' for module %04x\n", name, pModule->self );
132 return Win32HandleToDosFileHandle( handle );
136 /***********************************************************************
139 * Apply relocations to a segment. Helper for NE_LoadSegment.
141 static inline BOOL apply_relocations( NE_MODULE *pModule, const struct relocation_entry_s *rep,
142 int count, int segnum )
149 FARPROC16 address = 0;
150 HMODULE16 *pModuleTable = (HMODULE16 *)((char *)pModule + pModule->ne_modtab);
151 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
152 SEGTABLEENTRY *pSeg = pSegTable + segnum - 1;
155 * Go through the relocation table one entry at a time.
157 for (i = 0; i < count; i++, rep++)
160 * Get the target address corresponding to this entry.
163 /* If additive, there is no target chain list. Instead, add source
165 int additive = rep->relocation_type & NE_RELFLAG_ADDITIVE;
166 switch (rep->relocation_type & 3)
168 case NE_RELTYPE_ORDINAL:
169 module = pModuleTable[rep->target1-1];
170 ordinal = rep->target2;
171 address = NE_GetEntryPoint( module, ordinal );
174 NE_MODULE *pTarget = NE_GetPtr( module );
176 WARN_(module)("Module not found: %04x, reference %d of module %*.*s\n",
177 module, rep->target1,
178 *((BYTE *)pModule + pModule->ne_restab),
179 *((BYTE *)pModule + pModule->ne_restab),
180 (char *)pModule + pModule->ne_restab + 1 );
183 ERR("No implementation for %.*s.%d, setting to 0xdeadbeef\n",
184 *((BYTE *)pTarget + pTarget->ne_restab),
185 (char *)pTarget + pTarget->ne_restab + 1,
187 address = (FARPROC16)0xdeadbeef;
192 NE_MODULE *pTarget = NE_GetPtr( module );
193 TRACE("%d: %.*s.%d=%04x:%04x %s\n", i + 1,
194 *((BYTE *)pTarget + pTarget->ne_restab),
195 (char *)pTarget + pTarget->ne_restab + 1,
196 ordinal, HIWORD(address), LOWORD(address),
197 NE_GetRelocAddrName( rep->address_type, additive ) );
201 case NE_RELTYPE_NAME:
202 module = pModuleTable[rep->target1-1];
203 func_name = (BYTE *)pModule + pModule->ne_imptab + rep->target2;
204 memcpy( buffer, func_name+1, *func_name );
205 buffer[*func_name] = '\0';
206 ordinal = NE_GetOrdinal( module, buffer );
207 address = NE_GetEntryPoint( module, ordinal );
209 if (ERR_ON(fixup) && !address)
211 NE_MODULE *pTarget = NE_GetPtr( module );
212 ERR("No implementation for %.*s.%s, setting to 0xdeadbeef\n",
213 *((BYTE *)pTarget + pTarget->ne_restab),
214 (char *)pTarget + pTarget->ne_restab + 1, buffer );
216 if (!address) address = (FARPROC16) 0xdeadbeef;
219 NE_MODULE *pTarget = NE_GetPtr( module );
220 TRACE("%d: %.*s.%s=%04x:%04x %s\n", i + 1,
221 *((BYTE *)pTarget + pTarget->ne_restab),
222 (char *)pTarget + pTarget->ne_restab + 1,
223 buffer, HIWORD(address), LOWORD(address),
224 NE_GetRelocAddrName( rep->address_type, additive ) );
228 case NE_RELTYPE_INTERNAL:
229 if ((rep->target1 & 0xff) == 0xff)
231 address = NE_GetEntryPoint( pModule->self, rep->target2 );
235 address = (FARPROC16)MAKESEGPTR( SEL(pSegTable[rep->target1-1].hSeg), rep->target2 );
238 TRACE("%d: %04x:%04x %s\n",
239 i + 1, HIWORD(address), LOWORD(address),
240 NE_GetRelocAddrName( rep->address_type, additive ) );
243 case NE_RELTYPE_OSFIXUP:
244 /* Relocation type 7:
246 * These appear to be used as fixups for the Windows
247 * floating point emulator. Let's just ignore them and
248 * try to use the hardware floating point. Linux should
249 * successfully emulate the coprocessor if it doesn't
252 TRACE("%d: TYPE %d, OFFSET %04x, TARGET %04x %04x %s\n",
253 i + 1, rep->relocation_type, rep->offset,
254 rep->target1, rep->target2,
255 NE_GetRelocAddrName( rep->address_type, additive ) );
259 offset = rep->offset;
261 /* Apparently, high bit of address_type is sometimes set; */
262 /* we ignore it for now */
263 if (rep->address_type > NE_RADDR_OFFSET32)
266 GetModuleName16( pModule->self, module, sizeof(module) );
267 ERR("WARNING: module %s: unknown reloc addr type = 0x%02x. Please report.\n",
268 module, rep->address_type );
273 sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
274 TRACE(" %04x:%04x\n", offset, *sp );
275 switch (rep->address_type & 0x7f)
277 case NE_RADDR_LOWBYTE:
278 *(BYTE *)sp += LOBYTE((int)address);
280 case NE_RADDR_OFFSET16:
281 *sp += LOWORD(address);
283 case NE_RADDR_POINTER32:
284 *sp += LOWORD(address);
285 *(sp+1) = HIWORD(address);
287 case NE_RADDR_SELECTOR:
288 /* Borland creates additive records with offset zero. Strange, but OK */
290 ERR("Additive selector to %04x.Please report\n",*sp);
292 *sp = HIWORD(address);
298 else /* non-additive fixup */
304 sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
306 TRACE(" %04x:%04x\n", offset, *sp );
307 switch (rep->address_type & 0x7f)
309 case NE_RADDR_LOWBYTE:
310 *(BYTE *)sp = LOBYTE((int)address);
312 case NE_RADDR_OFFSET16:
313 *sp = LOWORD(address);
315 case NE_RADDR_POINTER32:
316 *(FARPROC16 *)sp = address;
318 case NE_RADDR_SELECTOR:
319 *sp = SELECTOROF(address);
324 if (next_offset == offset) break; /* avoid infinite loop */
325 if (next_offset >= GlobalSize16(pSeg->hSeg)) break;
326 offset = next_offset;
327 } while (offset != 0xffff);
333 WARN("WARNING: %d: unknown ADDR TYPE %d, "
334 "TYPE %d, OFFSET %04x, TARGET %04x %04x\n",
335 i + 1, rep->address_type, rep->relocation_type,
336 rep->offset, rep->target1, rep->target2);
341 /***********************************************************************
344 BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum )
348 const struct relocation_entry_s *rep;
350 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
351 SEGTABLEENTRY *pSeg = pSegTable + segnum - 1;
353 if (pSeg->flags & NE_SEGFLAGS_LOADED)
355 /* self-loader ? -> already loaded it */
356 if (pModule->ne_flags & NE_FFLAGS_SELFLOAD)
359 /* leave, except for DGROUP, as this may be the second instance */
360 if (segnum != pModule->ne_autodata)
364 if (!pSeg->filepos) return TRUE; /* No file image, just return */
366 TRACE_(module)("Loading segment %d, hSeg=%04x, flags=%04x\n",
367 segnum, pSeg->hSeg, pSeg->flags );
368 pos = pSeg->filepos << pModule->ne_align;
369 if (pSeg->size) size = pSeg->size;
370 else size = pSeg->minsize ? pSeg->minsize : 0x10000;
372 if (pModule->ne_flags & NE_FFLAGS_SELFLOAD && segnum > 1)
374 /* Implement self-loading segments */
375 SELFLOADHEADER *selfloadheader;
381 selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg),0) );
382 oldstack = NtCurrentTeb()->WOW32Reserved;
383 NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR(pModule->self_loading_sel,
384 0xff00 - sizeof(STACK16FRAME));
386 hFile16 = NE_OpenFile( pModule );
387 TRACE_(dll)("Call LoadAppSegProc(hmodule=0x%04x,hf=%x,segnum=%d)\n",
388 pModule->self,hFile16,segnum );
389 args[2] = pModule->self;
392 WOWCallback16Ex( (DWORD)selfloadheader->LoadAppSeg, WCB16_PASCAL, sizeof(args), args, &ret );
393 pSeg->hSeg = LOWORD(ret);
394 TRACE_(dll)("Ret LoadAppSegProc: hSeg=0x%04x\n", pSeg->hSeg);
395 _lclose16( hFile16 );
396 NtCurrentTeb()->WOW32Reserved = oldstack;
398 pSeg->flags |= NE_SEGFLAGS_LOADED;
401 else if (!(pSeg->flags & NE_SEGFLAGS_ITERATED))
403 void *mem = GlobalLock16(pSeg->hSeg);
404 if (!NE_READ_DATA( pModule, mem, pos, size ))
411 The following bit of code for "iterated segments" was written without
412 any documentation on the format of these segments. It seems to work,
413 but may be missing something.
415 const char *buff = NE_GET_DATA( pModule, pos, size );
416 const char* curr = buff;
417 char *mem = GlobalLock16(pSeg->hSeg);
420 if (buff == NULL) return FALSE;
422 while(curr < buff + size) {
423 unsigned int rept = ((const short *)curr)[0];
424 unsigned int len = ((const short *)curr)[1];
426 curr += 2*sizeof(short);
429 memcpy( mem, curr, len );
436 pSeg->flags |= NE_SEGFLAGS_LOADED;
438 /* Perform exported function prolog fixups */
439 NE_FixupSegmentPrologs( pModule, segnum );
441 if (!(pSeg->flags & NE_SEGFLAGS_RELOC_DATA))
442 return TRUE; /* No relocation data, we are done */
444 if (!NE_READ_DATA( pModule, &count, pos, sizeof(count) ) || !count) return TRUE;
445 pos += sizeof(count);
447 TRACE("Fixups for %.*s, segment %d, hSeg %04x\n",
448 *((BYTE *)pModule + pModule->ne_restab),
449 (char *)pModule + pModule->ne_restab + 1,
450 segnum, pSeg->hSeg );
452 if (!(rep = NE_GET_DATA( pModule, pos, count * sizeof(struct relocation_entry_s) )))
455 return apply_relocations( pModule, rep, count, segnum );
459 /***********************************************************************
462 BOOL NE_LoadAllSegments( NE_MODULE *pModule )
465 SEGTABLEENTRY * pSegTable = NE_SEG_TABLE(pModule);
467 if (pModule->ne_flags & NE_FFLAGS_SELFLOAD)
471 /* Handle self-loading modules */
472 SELFLOADHEADER *selfloadheader;
473 HMODULE16 mod = GetModuleHandle16("KERNEL");
477 TRACE_(module)("%.*s is a self-loading module!\n",
478 *((BYTE*)pModule + pModule->ne_restab),
479 (char *)pModule + pModule->ne_restab + 1);
480 if (!NE_LoadSegment( pModule, 1 )) return FALSE;
481 selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg), 0) );
482 selfloadheader->EntryAddrProc = GetProcAddress16(mod,"EntryAddrProc");
483 selfloadheader->MyAlloc = GetProcAddress16(mod,"MyAlloc");
484 selfloadheader->SetOwner = GetProcAddress16(mod,"FarSetOwner");
485 sel = GlobalAlloc16( GMEM_ZEROINIT, 0xFF00 );
486 pModule->self_loading_sel = SEL(sel);
487 FarSetOwner16( sel, pModule->self );
488 oldstack = NtCurrentTeb()->WOW32Reserved;
489 NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR(pModule->self_loading_sel,
490 0xff00 - sizeof(STACK16FRAME) );
492 hFile16 = NE_OpenFile(pModule);
493 TRACE_(dll)("CallBootAppProc(hModule=0x%04x,hf=0x%04x)\n",
494 pModule->self,hFile16);
495 args[1] = pModule->self;
497 WOWCallback16Ex( (DWORD)selfloadheader->BootApp, WCB16_PASCAL, sizeof(args), args, NULL );
498 TRACE_(dll)("Return from CallBootAppProc\n");
500 NtCurrentTeb()->WOW32Reserved = oldstack;
502 for (i = 2; i <= pModule->ne_cseg; i++)
503 if (!NE_LoadSegment( pModule, i )) return FALSE;
507 for (i = 1; i <= pModule->ne_cseg; i++)
508 if (!NE_LoadSegment( pModule, i )) return FALSE;
514 /***********************************************************************
515 * NE_FixupSegmentPrologs
517 * Fixup exported functions prologs of one segment
519 static void NE_FixupSegmentPrologs(NE_MODULE *pModule, WORD segnum)
521 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
524 WORD dgroup, num_entries, sel = SEL(pSegTable[segnum-1].hSeg);
527 TRACE("(%d);\n", segnum);
529 if (pSegTable[segnum-1].flags & NE_SEGFLAGS_DATA)
531 pSegTable[segnum-1].flags |= NE_SEGFLAGS_LOADED;
535 if (!pModule->ne_autodata) return;
537 if (!(dgroup = SEL(pSegTable[pModule->ne_autodata-1].hSeg))) return;
539 pSeg = MapSL( MAKESEGPTR(sel, 0) );
541 bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->ne_enttab);
544 TRACE("num_entries: %d, bundle: %p, next: %04x, pSeg: %p\n", bundle->last - bundle->first, bundle, bundle->next, pSeg);
545 if (!(num_entries = bundle->last - bundle->first))
547 entry = (ET_ENTRY *)((BYTE *)bundle+6);
548 while (num_entries--)
550 /*TRACE("entry: %p, entry->segnum: %d, entry->offs: %04x\n", entry, entry->segnum, entry->offs);*/
551 if (entry->segnum == segnum)
553 pFunc = pSeg+entry->offs;
554 TRACE("pFunc: %p, *(DWORD *)pFunc: %08x, num_entries: %d\n", pFunc, *(DWORD *)pFunc, num_entries);
555 if (*(pFunc+2) == 0x90)
557 if (*(WORD *)pFunc == 0x581e) /* push ds, pop ax */
559 TRACE("patch %04x:%04x -> mov ax, ds\n", sel, entry->offs);
560 *(WORD *)pFunc = 0xd88c; /* mov ax, ds */
563 if (*(WORD *)pFunc == 0xd88c)
565 if ((entry->flags & 2)) /* public data ? */
567 TRACE("patch %04x:%04x -> mov ax, dgroup [%04x]\n", sel, entry->offs, dgroup);
568 *pFunc = 0xb8; /* mov ax, */
569 *(WORD *)(pFunc+1) = dgroup;
571 else if ((pModule->ne_flags & NE_FFLAGS_MULTIPLEDATA)
572 && (entry->flags & 1)) /* exported ? */
574 TRACE("patch %04x:%04x -> nop, nop\n", sel, entry->offs);
575 *(WORD *)pFunc = 0x9090; /* nop, nop */
582 } while ( (bundle->next) && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
586 /***********************************************************************
587 * PatchCodeHandle (KERNEL.110)
589 * Needed for self-loading modules.
591 DWORD WINAPI PatchCodeHandle16(HANDLE16 hSeg)
594 WORD sel = SEL(hSeg);
595 NE_MODULE *pModule = NE_GetPtr(FarGetOwner16(sel));
596 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE(pModule);
598 TRACE_(module)("(%04x);\n", hSeg);
600 /* find the segment number of the module that belongs to hSeg */
601 for (segnum = 1; segnum <= pModule->ne_cseg; segnum++)
603 if (SEL(pSegTable[segnum-1].hSeg) == sel)
605 NE_FixupSegmentPrologs(pModule, segnum);
610 return MAKELONG(hSeg, sel);
614 /***********************************************************************
615 * NE_GetDLLInitParams
617 static VOID NE_GetDLLInitParams( NE_MODULE *pModule,
618 WORD *hInst, WORD *ds, WORD *heap )
620 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
622 if (!(pModule->ne_flags & NE_FFLAGS_SINGLEDATA))
624 if (pModule->ne_flags & NE_FFLAGS_MULTIPLEDATA || pModule->ne_autodata)
627 ERR_(dll)("Library is not marked SINGLEDATA\n");
630 else /* DATA NONE DLL */
636 else /* DATA SINGLE DLL */
638 if (pModule->ne_autodata) {
639 *ds = SEL(pSegTable[pModule->ne_autodata-1].hSeg);
640 *heap = pModule->ne_heap;
642 else /* hmm, DLL has no dgroup,
643 but why has it NE_FFLAGS_SINGLEDATA set ?
644 Buggy DLL compiler ? */
651 *hInst = *ds ? GlobalHandle16(*ds) : pModule->self;
655 /***********************************************************************
658 * Call the DLL initialization code
660 static BOOL NE_InitDLL( NE_MODULE *pModule )
662 SEGTABLEENTRY *pSegTable;
663 WORD hInst, ds, heap;
666 pSegTable = NE_SEG_TABLE( pModule );
668 if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE) ||
669 (pModule->ne_flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/
671 /* Call USER signal handler for Win3.1 compatibility. */
672 NE_CallUserSignalProc( pModule->self, USIG16_DLL_LOAD );
674 if (!SELECTOROF(pModule->ne_csip)) return TRUE; /* no initialization code */
677 /* Registers at initialization must be:
679 * di library instance
680 * ds data segment if any
681 * es:si command line (always 0)
684 memset( &context, 0, sizeof(context) );
686 NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
691 context.SegEs = ds; /* who knows ... */
692 context.SegFs = wine_get_fs();
693 context.SegGs = wine_get_gs();
694 context.SegCs = SEL(pSegTable[SELECTOROF(pModule->ne_csip)-1].hSeg);
695 context.Eip = OFFSETOF(pModule->ne_csip);
696 context.Ebp = OFFSETOF(NtCurrentTeb()->WOW32Reserved) + FIELD_OFFSET(STACK16FRAME,bp);
698 pModule->ne_csip = 0; /* Don't initialize it twice */
699 TRACE_(dll)("Calling LibMain for %.*s, cs:ip=%04x:%04x ds=%04x di=%04x cx=%04x\n",
700 *((BYTE*)pModule + pModule->ne_restab),
701 (char *)pModule + pModule->ne_restab + 1,
702 context.SegCs, context.Eip, context.SegDs,
703 LOWORD(context.Edi), LOWORD(context.Ecx) );
704 WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
708 /***********************************************************************
711 * Recursively initialize all DLLs (according to the order in which
712 * they where loaded).
714 void NE_InitializeDLLs( HMODULE16 hModule )
719 if (!(pModule = NE_GetPtr( hModule ))) return;
720 assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
722 if (pModule->dlls_to_init)
724 HGLOBAL16 to_init = pModule->dlls_to_init;
725 pModule->dlls_to_init = 0;
726 for (pDLL = GlobalLock16( to_init ); *pDLL; pDLL++)
728 NE_InitializeDLLs( *pDLL );
730 GlobalFree16( to_init );
732 NE_InitDLL( pModule );
736 /**********************************************************************
737 * NE_CallUserSignalProc
739 * According to "Undocumented Windows", the task signal proc is
740 * bypassed for module load/unload notifications, and the USER signal
741 * proc is called directly instead. This is what this function does.
743 typedef DWORD (WINAPI *pSignalProc)( HANDLE16 module, UINT16 code, UINT16 exit,
744 HINSTANCE16 inst, HQUEUE16 queue );
746 void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code )
749 HMODULE16 user = GetModuleHandle16("user.exe");
752 if ((proc = GetProcAddress16( user, "SignalProc" )))
754 /* USER is always a builtin dll */
755 pSignalProc sigproc = (pSignalProc)((ENTRYPOINT16 *)MapSL( (SEGPTR)proc ))->target;
756 sigproc( hModule, code, 0, 0, 0 );
761 /***********************************************************************
762 * NE_CallDllEntryPoint
764 * Call the DllEntryPoint of DLLs with subsystem >= 4.0
766 typedef DWORD (WINAPI *WinNEEntryProc)(DWORD,WORD,WORD,WORD,DWORD,WORD);
768 static void NE_CallDllEntryPoint( NE_MODULE *pModule, DWORD dwReason )
770 WORD hInst, ds, heap;
771 FARPROC16 entryPoint;
773 if (!(pModule->ne_flags & NE_FFLAGS_LIBMODULE)) return;
774 if (!(pModule->ne_flags & NE_FFLAGS_BUILTIN) && pModule->ne_expver < 0x0400) return;
775 if (!(entryPoint = GetProcAddress16( pModule->self, "DllEntryPoint" ))) return;
777 NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
779 TRACE_(dll)( "Calling %s DllEntryPoint, cs:ip=%04x:%04x\n",
780 NE_MODULE_NAME( pModule ),
781 SELECTOROF(entryPoint), OFFSETOF(entryPoint) );
783 if ( pModule->ne_flags & NE_FFLAGS_BUILTIN )
785 WinNEEntryProc entryProc = (WinNEEntryProc)((ENTRYPOINT16 *)MapSL( (SEGPTR)entryPoint ))->target;
787 entryProc( dwReason, hInst, ds, heap, 0, 0 );
794 memset( &context, 0, sizeof(context) );
796 context.SegEs = ds; /* who knows ... */
797 context.SegFs = wine_get_fs();
798 context.SegGs = wine_get_gs();
799 context.SegCs = HIWORD(entryPoint);
800 context.Eip = LOWORD(entryPoint);
801 context.Ebp = OFFSETOF(NtCurrentTeb()->WOW32Reserved) + FIELD_OFFSET(STACK16FRAME,bp);
803 args[7] = HIWORD(dwReason);
804 args[6] = LOWORD(dwReason);
808 args[2] = 0; /* HIWORD(dwReserved1) */
809 args[1] = 0; /* LOWORD(dwReserved1) */
810 args[0] = 0; /* wReserved2 */
811 WOWCallback16Ex( 0, WCB16_REGS, sizeof(args), args, (DWORD *)&context );
815 /***********************************************************************
816 * NE_DllProcessAttach
818 * Call the DllEntryPoint of all modules this one (recursively)
819 * depends on, according to the order in which they were loaded.
821 * Note that --as opposed to the PE module case-- there is no notion
822 * of 'module loaded into a process' for NE modules, and hence we
823 * have no place to store the fact that the DllEntryPoint of a
824 * given module was already called on behalf of this process (e.g.
825 * due to some earlier LoadLibrary16 call).
827 * Thus, we just call the DllEntryPoint twice in that case. Win9x
828 * appears to behave this way as well ...
830 * This routine must only be called with the Win16Lock held.
832 * FIXME: We should actually abort loading in case the DllEntryPoint
844 static void add_to_init_list( struct ne_init_list *list, NE_MODULE *hModule )
846 NE_MODULE **newModule = NULL;
847 if ( list->count == list->size )
849 int newSize = list->size + 128;
852 newModule = HeapReAlloc( GetProcessHeap(), 0,
853 list->module, newSize*sizeof(NE_MODULE *) );
855 newModule = HeapAlloc( GetProcessHeap(), 0,
856 newSize*sizeof(NE_MODULE *) );
859 FIXME_(dll)("Out of memory!\n");
863 list->module = newModule;
864 list->size = newSize;
867 list->module[list->count++] = hModule;
870 static void free_init_list( struct ne_init_list *list )
874 HeapFree( GetProcessHeap(), 0, list->module );
875 memset( list, 0, sizeof(*list) );
879 static void fill_init_list( struct ne_init_list *list, HMODULE16 hModule )
885 if (!(pModule = NE_GetPtr( hModule ))) return;
886 assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
888 /* Never add a module twice */
889 for ( i = 0; i < list->count; i++ )
890 if ( list->module[i] == pModule )
893 /* Check for recursive call */
894 if ( pModule->ne_flagsothers & 0x80 ) return;
896 TRACE_(dll)("(%s) - START\n", NE_MODULE_NAME(pModule) );
898 /* Tag current module to prevent recursive loop */
899 pModule->ne_flagsothers |= 0x80;
901 /* Recursively attach all DLLs this one depends on */
902 pModRef = (HMODULE16 *)((char *)pModule + pModule->ne_modtab);
903 for ( i = 0; i < pModule->ne_cmod; i++ )
904 if ( pModRef[i] ) fill_init_list( list, pModRef[i] );
906 /* Add current module */
907 add_to_init_list( list, pModule );
909 /* Remove recursion flag */
910 pModule->ne_flagsothers &= ~0x80;
912 TRACE_(dll)("(%s) - END\n", NE_MODULE_NAME(pModule) );
915 static void call_init_list( struct ne_init_list *list )
918 for ( i = 0; i < list->count; i++ )
919 NE_CallDllEntryPoint( list->module[i], DLL_PROCESS_ATTACH );
922 void NE_DllProcessAttach( HMODULE16 hModule )
924 struct ne_init_list list;
925 memset( &list, 0, sizeof(list) );
927 fill_init_list( &list, hModule );
928 call_init_list( &list );
929 free_init_list( &list );
933 /***********************************************************************
936 * This function translates NE segment flags to GlobalAlloc flags
938 static WORD NE_Ne2MemFlags(WORD flags)
942 if (flags & NE_SEGFLAGS_DISCARDABLE)
943 memflags |= GMEM_DISCARDABLE;
944 if (flags & NE_SEGFLAGS_MOVEABLE ||
945 ( ! (flags & NE_SEGFLAGS_DATA) &&
946 ! (flags & NE_SEGFLAGS_LOADED) &&
947 ! (flags & NE_SEGFLAGS_ALLOCATED)
950 memflags |= GMEM_MOVEABLE;
951 memflags |= GMEM_ZEROINIT;
953 memflags = GMEM_ZEROINIT | GMEM_FIXED;
958 /***********************************************************************
959 * MyAlloc (KERNEL.668) Wine-specific export
961 * MyAlloc() function for self-loading apps.
963 DWORD WINAPI MyAlloc16( WORD wFlags, WORD wSize, WORD wElem )
965 WORD size = wSize << wElem;
968 if (wSize || (wFlags & NE_SEGFLAGS_MOVEABLE))
969 hMem = GlobalAlloc16( NE_Ne2MemFlags(wFlags), size);
971 if ( ((wFlags & 0x7) != 0x1) && /* DATA */
972 ((wFlags & 0x7) != 0x7) ) /* DATA|ALLOCATED|LOADED */
974 WORD hSel = SEL(hMem);
975 WORD access = SelectorAccessRights16(hSel,0,0);
977 access |= 2<<2; /* SEGMENT_CODE */
978 SelectorAccessRights16(hSel,1,access);
981 return MAKELONG( hMem, SEL(hMem) );
983 return MAKELONG( 0, hMem );
986 /***********************************************************************
989 HINSTANCE16 NE_GetInstance( NE_MODULE *pModule )
991 if ( !pModule->ne_autodata )
992 return pModule->self;
996 pSeg = NE_SEG_TABLE( pModule ) + pModule->ne_autodata - 1;
1001 /***********************************************************************
1004 BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum )
1006 SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + segnum - 1;
1008 unsigned char selflags;
1010 assert( !(pModule->ne_flags & NE_FFLAGS_WIN32) );
1012 if ( segnum < 1 || segnum > pModule->ne_cseg )
1015 if ( (pModule->ne_flags & NE_FFLAGS_SELFLOAD) && segnum != 1 )
1016 return TRUE; /* selfloader allocates segment itself */
1018 if ( (pSeg->flags & NE_SEGFLAGS_ALLOCATED) && segnum != pModule->ne_autodata )
1019 return TRUE; /* all but DGROUP only allocated once */
1021 minsize = pSeg->minsize ? pSeg->minsize : 0x10000;
1022 if ( segnum == SELECTOROF(pModule->ne_sssp) ) minsize += pModule->ne_stack;
1023 if ( segnum == pModule->ne_autodata ) minsize += pModule->ne_heap;
1025 selflags = (pSeg->flags & NE_SEGFLAGS_DATA) ? WINE_LDT_FLAGS_DATA : WINE_LDT_FLAGS_CODE;
1026 if (pSeg->flags & NE_SEGFLAGS_32BIT) selflags |= WINE_LDT_FLAGS_32BIT;
1027 pSeg->hSeg = GLOBAL_Alloc( NE_Ne2MemFlags(pSeg->flags), minsize, pModule->self, selflags );
1028 if (!pSeg->hSeg) return FALSE;
1030 pSeg->flags |= NE_SEGFLAGS_ALLOCATED;
1034 /***********************************************************************
1035 * NE_CreateAllSegments
1037 BOOL NE_CreateAllSegments( NE_MODULE *pModule )
1040 for ( i = 1; i <= pModule->ne_cseg; i++ )
1041 if ( !NE_CreateSegment( pModule, i ) )
1044 pModule->dgroup_entry = pModule->ne_autodata ? pModule->ne_segtab +
1045 (pModule->ne_autodata - 1) * sizeof(SEGTABLEENTRY) : 0;
1050 /**********************************************************************
1051 * IsSharedSelector (KERNEL.345)
1053 BOOL16 WINAPI IsSharedSelector16( HANDLE16 selector )
1055 /* Check whether the selector belongs to a DLL */
1056 NE_MODULE *pModule = NE_GetPtr( selector );
1057 if (!pModule) return FALSE;
1058 return (pModule->ne_flags & NE_FFLAGS_LIBMODULE) != 0;