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- SHBindToParent(): request correct COM interface from desktop.
[wine/wine-kai.git] / dlls / kernel / ne_segment.c
blobd1848d4f62fa310d491aeb9418260a7cbec358e9
1 /*
2 * NE segment loading
3 *
4 * Copyright 1993 Robert J. Amstadt
5 * Copyright 1995 Alexandre Julliard
6 *
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.
11 *
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.
16 *
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #include "config.h"
23 #include "wine/port.h"
24
25 #include <assert.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <sys/types.h>
29 #include <fcntl.h>
30 #ifdef HAVE_UNISTD_H
31 # include <unistd.h>
32 #endif
33 #include <ctype.h>
34 #include <string.h>
35
36 #include "wine/winbase16.h"
37 #include "wownt32.h"
38 #include "wine/library.h"
39 #include "kernel_private.h"
40 #include "module.h"
41 #include "stackframe.h"
42 #include "builtin16.h"
43 #include "toolhelp.h"
44 #include "wine/debug.h"
45
46 WINE_DEFAULT_DEBUG_CHANNEL(fixup);
47 WINE_DECLARE_DEBUG_CHANNEL(dll);
48 WINE_DECLARE_DEBUG_CHANNEL(module);
49
50 /*
51 * Relocation table entry
52 */
53 struct relocation_entry_s
54 {
55 BYTE address_type; /* Relocation address type */
56 BYTE relocation_type; /* Relocation type */
57 WORD offset; /* Offset in segment to fixup */
58 WORD target1; /* Target specification */
59 WORD target2; /* Target specification */
60 };
61
62 /*
63 * Relocation address types
64 */
65 #define NE_RADDR_LOWBYTE 0
66 #define NE_RADDR_SELECTOR 2
67 #define NE_RADDR_POINTER32 3
68 #define NE_RADDR_OFFSET16 5
69 #define NE_RADDR_POINTER48 11
70 #define NE_RADDR_OFFSET32 13
71
72 /*
73 * Relocation types
74 */
75 #define NE_RELTYPE_INTERNAL 0
76 #define NE_RELTYPE_ORDINAL 1
77 #define NE_RELTYPE_NAME 2
78 #define NE_RELTYPE_OSFIXUP 3
79 #define NE_RELFLAG_ADDITIVE 4
80
81 /* Self-loading modules contain this structure in their first segment */
82 typedef struct
83 {
84 WORD version; /* Must be "A0" (0x3041) */
85 WORD reserved;
86 FARPROC16 BootApp; /* startup procedure */
87 FARPROC16 LoadAppSeg; /* procedure to load a segment */
88 FARPROC16 reserved2;
89 FARPROC16 MyAlloc; /* memory allocation procedure,
90 * wine must write this field */
91 FARPROC16 EntryAddrProc;
92 FARPROC16 ExitProc; /* exit procedure */
93 WORD reserved3[4];
94 FARPROC16 SetOwner; /* Set Owner procedure, exported by wine */
95 } SELFLOADHEADER;
96
97 #define SEL(x) ((x)|1)
98
99 static void NE_FixupSegmentPrologs(NE_MODULE *pModule, WORD segnum);
100
101
102 /***********************************************************************
103 * NE_GetRelocAddrName
104 */
105 static const char *NE_GetRelocAddrName( BYTE addr_type, int additive )
106 {
107 switch(addr_type & 0x7f)
108 {
109 case NE_RADDR_LOWBYTE: return additive ? "BYTE add" : "BYTE";
110 case NE_RADDR_OFFSET16: return additive ? "OFFSET16 add" : "OFFSET16";
111 case NE_RADDR_POINTER32: return additive ? "POINTER32 add" : "POINTER32";
112 case NE_RADDR_SELECTOR: return additive ? "SELECTOR add" : "SELECTOR";
113 case NE_RADDR_POINTER48: return additive ? "POINTER48 add" : "POINTER48";
114 case NE_RADDR_OFFSET32: return additive ? "OFFSET32 add" : "OFFSET32";
115 }
116 return "???";
117 }
118
119
120 /***********************************************************************
121 * NE_LoadSegment
122 */
123 BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum )
124 {
125 SEGTABLEENTRY *pSegTable, *pSeg;
126 HMODULE16 *pModuleTable;
127 WORD count, i, offset, next_offset;
128 HMODULE16 module;
129 FARPROC16 address = 0;
130 HANDLE hf;
131 DWORD res;
132 struct relocation_entry_s *rep, *reloc_entries;
133 BYTE *func_name;
134 int size;
135 char* mem;
136
137 char buffer[256];
138 int ordinal, additive;
139 unsigned short *sp;
140
141 pSegTable = NE_SEG_TABLE( pModule );
142 pSeg = pSegTable + segnum - 1;
143
144 if (pSeg->flags & NE_SEGFLAGS_LOADED)
145 {
146 /* self-loader ? -> already loaded it */
147 if (pModule->flags & NE_FFLAGS_SELFLOAD)
148 return TRUE;
149
150 /* leave, except for DGROUP, as this may be the second instance */
151 if (segnum != pModule->dgroup)
152 return TRUE;
153 }
154
155 if (!pSeg->filepos) return TRUE; /* No file image, just return */
156
157 pModuleTable = (HMODULE16 *)((char *)pModule + pModule->modref_table);
158
159 hf = NE_OpenFile( pModule );
160 TRACE_(module)("Loading segment %d, hSeg=%04x, flags=%04x\n",
161 segnum, pSeg->hSeg, pSeg->flags );
162 SetFilePointer( hf, pSeg->filepos << pModule->alignment, NULL, SEEK_SET );
163 if (pSeg->size) size = pSeg->size;
164 else size = pSeg->minsize ? pSeg->minsize : 0x10000;
165 mem = GlobalLock16(pSeg->hSeg);
166 if (pModule->flags & NE_FFLAGS_SELFLOAD && segnum > 1)
167 {
168 /* Implement self-loading segments */
169 SELFLOADHEADER *selfloadheader;
170 DWORD oldstack;
171 HANDLE hFile32;
172 HFILE16 hFile16;
173 WORD args[3];
174 DWORD ret;
175
176 selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg),0) );
177 oldstack = NtCurrentTeb()->cur_stack;
178 NtCurrentTeb()->cur_stack = MAKESEGPTR(pModule->self_loading_sel,
179 0xff00 - sizeof(STACK16FRAME));
180
181 TRACE_(dll)("CallLoadAppSegProc(hmodule=0x%04x,hf=%p,segnum=%d\n",
182 pModule->self,hf,segnum );
183 DuplicateHandle( GetCurrentProcess(), hf, GetCurrentProcess(), &hFile32,
184 0, FALSE, DUPLICATE_SAME_ACCESS );
185 hFile16 = Win32HandleToDosFileHandle( hFile32 );
186 args[2] = pModule->self;
187 args[1] = hFile16;
188 args[0] = segnum;
189 WOWCallback16Ex( (DWORD)selfloadheader->LoadAppSeg, WCB16_PASCAL, sizeof(args), args, &ret );
190 pSeg->hSeg = LOWORD(ret);
191 TRACE_(dll)("Ret CallLoadAppSegProc: hSeg = 0x%04x\n", pSeg->hSeg);
192 _lclose16( hFile16 );
193 NtCurrentTeb()->cur_stack = oldstack;
194 }
195 else if (!(pSeg->flags & NE_SEGFLAGS_ITERATED))
196 ReadFile(hf, mem, size, &res, NULL);
197 else {
198 /*
199 The following bit of code for "iterated segments" was written without
200 any documentation on the format of these segments. It seems to work,
201 but may be missing something. If you have any doc please either send
202 it to me or fix the code yourself. gfm@werple.mira.net.au
203 */
204 char* buff = HeapAlloc(GetProcessHeap(), 0, size);
205 char* curr = buff;
206
207 if(buff == NULL) {
208 WARN_(dll)("Memory exhausted!\n");
209 goto fail;
210 }
211
212 ReadFile(hf, buff, size, &res, NULL);
213 while(curr < buff + size) {
214 unsigned int rept = *((short*) curr)++;
215 unsigned int len = *((short*) curr)++;
216 for(; rept > 0; rept--) {
217 char* bytes = curr;
218 unsigned int byte;
219 for(byte = 0; byte < len; byte++)
220 *mem++ = *bytes++;
221 }
222 curr += len;
223 }
224 HeapFree(GetProcessHeap(), 0, buff);
225 }
226
227 pSeg->flags |= NE_SEGFLAGS_LOADED;
228
229 /* Perform exported function prolog fixups */
230 NE_FixupSegmentPrologs( pModule, segnum );
231
232 if (!(pSeg->flags & NE_SEGFLAGS_RELOC_DATA))
233 goto succeed; /* No relocation data, we are done */
234
235 ReadFile(hf, &count, sizeof(count), &res, NULL);
236 if (!count) goto succeed;
237
238 TRACE("Fixups for %.*s, segment %d, hSeg %04x\n",
239 *((BYTE *)pModule + pModule->name_table),
240 (char *)pModule + pModule->name_table + 1,
241 segnum, pSeg->hSeg );
242
243 reloc_entries = (struct relocation_entry_s *)HeapAlloc(GetProcessHeap(), 0, count * sizeof(struct relocation_entry_s));
244 if(reloc_entries == NULL) {
245 WARN("Not enough memory for relocation entries!\n");
246 goto fail;
247 }
248 if (!ReadFile( hf, reloc_entries, count * sizeof(struct relocation_entry_s), &res, NULL) ||
249 (res != count * sizeof(struct relocation_entry_s)))
250 {
251 WARN("Unable to read relocation information\n" );
252 goto fail;
253 }
254
255 /*
256 * Go through the relocation table one entry at a time.
257 */
258 rep = reloc_entries;
259 for (i = 0; i < count; i++, rep++)
260 {
261 /*
262 * Get the target address corresponding to this entry.
263 */
264
265 /* If additive, there is no target chain list. Instead, add source
266 and target */
267 additive = rep->relocation_type & NE_RELFLAG_ADDITIVE;
268 rep->relocation_type &= 0x3;
269
270 switch (rep->relocation_type)
271 {
272 case NE_RELTYPE_ORDINAL:
273 module = pModuleTable[rep->target1-1];
274 ordinal = rep->target2;
275 address = NE_GetEntryPoint( module, ordinal );
276 if (!address)
277 {
278 NE_MODULE *pTarget = NE_GetPtr( module );
279 if (!pTarget)
280 WARN_(module)("Module not found: %04x, reference %d of module %*.*s\n",
281 module, rep->target1,
282 *((BYTE *)pModule + pModule->name_table),
283 *((BYTE *)pModule + pModule->name_table),
284 (char *)pModule + pModule->name_table + 1 );
285 else
286 {
287 ERR("No implementation for %.*s.%d, setting to 0xdeadbeef\n",
288 *((BYTE *)pTarget + pTarget->name_table),
289 (char *)pTarget + pTarget->name_table + 1,
290 ordinal );
291 address = (FARPROC16)0xdeadbeef;
292 }
293 }
294 if (TRACE_ON(fixup))
295 {
296 NE_MODULE *pTarget = NE_GetPtr( module );
297 TRACE("%d: %.*s.%d=%04x:%04x %s\n", i + 1,
298 *((BYTE *)pTarget + pTarget->name_table),
299 (char *)pTarget + pTarget->name_table + 1,
300 ordinal, HIWORD(address), LOWORD(address),
301 NE_GetRelocAddrName( rep->address_type, additive ) );
302 }
303 break;
304
305 case NE_RELTYPE_NAME:
306 module = pModuleTable[rep->target1-1];
307 func_name = (char *)pModule + pModule->import_table + rep->target2;
308 memcpy( buffer, func_name+1, *func_name );
309 buffer[*func_name] = '\0';
310 func_name = buffer;
311 ordinal = NE_GetOrdinal( module, func_name );
312 address = NE_GetEntryPoint( module, ordinal );
313
314 if (ERR_ON(fixup) && !address)
315 {
316 NE_MODULE *pTarget = NE_GetPtr( module );
317 ERR("No implementation for %.*s.%s, setting to 0xdeadbeef\n",
318 *((BYTE *)pTarget + pTarget->name_table),
319 (char *)pTarget + pTarget->name_table + 1, func_name );
320 }
321 if (!address) address = (FARPROC16) 0xdeadbeef;
322 if (TRACE_ON(fixup))
323 {
324 NE_MODULE *pTarget = NE_GetPtr( module );
325 TRACE("%d: %.*s.%s=%04x:%04x %s\n", i + 1,
326 *((BYTE *)pTarget + pTarget->name_table),
327 (char *)pTarget + pTarget->name_table + 1,
328 func_name, HIWORD(address), LOWORD(address),
329 NE_GetRelocAddrName( rep->address_type, additive ) );
330 }
331 break;
332
333 case NE_RELTYPE_INTERNAL:
334 if ((rep->target1 & 0xff) == 0xff)
335 {
336 address = NE_GetEntryPoint( pModule->self, rep->target2 );
337 }
338 else
339 {
340 address = (FARPROC16)MAKESEGPTR( SEL(pSegTable[rep->target1-1].hSeg), rep->target2 );
341 }
342
343 TRACE("%d: %04x:%04x %s\n",
344 i + 1, HIWORD(address), LOWORD(address),
345 NE_GetRelocAddrName( rep->address_type, additive ) );
346 break;
347
348 case NE_RELTYPE_OSFIXUP:
349 /* Relocation type 7:
350 *
351 * These appear to be used as fixups for the Windows
352 * floating point emulator. Let's just ignore them and
353 * try to use the hardware floating point. Linux should
354 * successfully emulate the coprocessor if it doesn't
355 * exist.
356 */
357 TRACE("%d: TYPE %d, OFFSET %04x, TARGET %04x %04x %s\n",
358 i + 1, rep->relocation_type, rep->offset,
359 rep->target1, rep->target2,
360 NE_GetRelocAddrName( rep->address_type, additive ) );
361 continue;
362 }
363
364 offset = rep->offset;
365
366 /* Apparently, high bit of address_type is sometimes set; */
367 /* we ignore it for now */
368 if (rep->address_type > NE_RADDR_OFFSET32)
369 {
370 char module[10];
371 GetModuleName16( pModule->self, module, sizeof(module) );
372 ERR("WARNING: module %s: unknown reloc addr type = 0x%02x. Please report.\n",
373 module, rep->address_type );
374 }
375
376 if (additive)
377 {
378 sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
379 TRACE(" %04x:%04x\n", offset, *sp );
380 switch (rep->address_type & 0x7f)
381 {
382 case NE_RADDR_LOWBYTE:
383 *(BYTE *)sp += LOBYTE((int)address);
384 break;
385 case NE_RADDR_OFFSET16:
386 *sp += LOWORD(address);
387 break;
388 case NE_RADDR_POINTER32:
389 *sp += LOWORD(address);
390 *(sp+1) = HIWORD(address);
391 break;
392 case NE_RADDR_SELECTOR:
393 /* Borland creates additive records with offset zero. Strange, but OK */
394 if (*sp)
395 ERR("Additive selector to %04x.Please report\n",*sp);
396 else
397 *sp = HIWORD(address);
398 break;
399 default:
400 goto unknown;
401 }
402 }
403 else /* non-additive fixup */
404 {
405 do
406 {
407 sp = MapSL( MAKESEGPTR( SEL(pSeg->hSeg), offset ) );
408 next_offset = *sp;
409 TRACE(" %04x:%04x\n", offset, *sp );
410 switch (rep->address_type & 0x7f)
411 {
412 case NE_RADDR_LOWBYTE:
413 *(BYTE *)sp = LOBYTE((int)address);
414 break;
415 case NE_RADDR_OFFSET16:
416 *sp = LOWORD(address);
417 break;
418 case NE_RADDR_POINTER32:
419 *(FARPROC16 *)sp = address;
420 break;
421 case NE_RADDR_SELECTOR:
422 *sp = SELECTOROF(address);
423 break;
424 default:
425 goto unknown;
426 }
427 if (next_offset == offset) break; /* avoid infinite loop */
428 if (next_offset >= GlobalSize16(pSeg->hSeg)) break;
429 offset = next_offset;
430 } while (offset != 0xffff);
431 }
432 }
433
434 HeapFree(GetProcessHeap(), 0, reloc_entries);
435
436 succeed:
437 CloseHandle(hf);
438 return TRUE;
439
440 unknown:
441 WARN("WARNING: %d: unknown ADDR TYPE %d, "
442 "TYPE %d, OFFSET %04x, TARGET %04x %04x\n",
443 i + 1, rep->address_type, rep->relocation_type,
444 rep->offset, rep->target1, rep->target2);
445 HeapFree(GetProcessHeap(), 0, reloc_entries);
446
447 fail:
448 CloseHandle(hf);
449 return FALSE;
450 }
451
452
453 /***********************************************************************
454 * NE_LoadAllSegments
455 */
456 BOOL NE_LoadAllSegments( NE_MODULE *pModule )
457 {
458 int i;
459 SEGTABLEENTRY * pSegTable = (SEGTABLEENTRY *) NE_SEG_TABLE(pModule);
460
461 if (pModule->flags & NE_FFLAGS_SELFLOAD)
462 {
463 HANDLE hf;
464 HFILE16 hFile16;
465 HGLOBAL16 sel;
466 /* Handle self-loading modules */
467 SELFLOADHEADER *selfloadheader;
468 HMODULE16 mod = GetModuleHandle16("KERNEL");
469 DWORD oldstack;
470 WORD args[2];
471
472 TRACE_(module)("%.*s is a self-loading module!\n",
473 *((BYTE*)pModule + pModule->name_table),
474 (char *)pModule + pModule->name_table + 1);
475 if (!NE_LoadSegment( pModule, 1 )) return FALSE;
476 selfloadheader = MapSL( MAKESEGPTR(SEL(pSegTable->hSeg), 0) );
477 selfloadheader->EntryAddrProc = GetProcAddress16(mod,"EntryAddrProc");
478 selfloadheader->MyAlloc = GetProcAddress16(mod,"MyAlloc");
479 selfloadheader->SetOwner = GetProcAddress16(mod,"FarSetOwner");
480 sel = GlobalAlloc16( GMEM_ZEROINIT, 0xFF00 );
481 pModule->self_loading_sel = SEL(sel);
482 FarSetOwner16( sel, pModule->self );
483 oldstack = NtCurrentTeb()->cur_stack;
484 NtCurrentTeb()->cur_stack = MAKESEGPTR(pModule->self_loading_sel,
485 0xff00 - sizeof(STACK16FRAME) );
486
487 hf = NE_OpenFile(pModule);
488 hFile16 = Win32HandleToDosFileHandle( hf );
489 TRACE_(dll)("CallBootAppProc(hModule=0x%04x,hf=0x%04x)\n",
490 pModule->self,hFile16);
491 args[1] = pModule->self;
492 args[0] = hFile16;
493 WOWCallback16Ex( (DWORD)selfloadheader->BootApp, WCB16_PASCAL, sizeof(args), args, NULL );
494 TRACE_(dll)("Return from CallBootAppProc\n");
495 _lclose16(hFile16);
496 NtCurrentTeb()->cur_stack = oldstack;
497
498 for (i = 2; i <= pModule->seg_count; i++)
499 if (!NE_LoadSegment( pModule, i )) return FALSE;
500 }
501 else
502 {
503 for (i = 1; i <= pModule->seg_count; i++)
504 if (!NE_LoadSegment( pModule, i )) return FALSE;
505 }
506 return TRUE;
507 }
508
509
510 /***********************************************************************
511 * NE_FixupSegmentPrologs
512 *
513 * Fixup exported functions prologs of one segment
514 */
515 static void NE_FixupSegmentPrologs(NE_MODULE *pModule, WORD segnum)
516 {
517 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
518 ET_BUNDLE *bundle;
519 ET_ENTRY *entry;
520 WORD dgroup, num_entries, sel = SEL(pSegTable[segnum-1].hSeg);
521 BYTE *pSeg, *pFunc;
522
523 TRACE("(%d);\n", segnum);
524
525 if (pSegTable[segnum-1].flags & NE_SEGFLAGS_DATA)
526 {
527 pSegTable[segnum-1].flags |= NE_SEGFLAGS_LOADED;
528 return;
529 }
530
531 if (!pModule->dgroup) return;
532
533 if (!(dgroup = SEL(pSegTable[pModule->dgroup-1].hSeg))) return;
534
535 pSeg = MapSL( MAKESEGPTR(sel, 0) );
536
537 bundle = (ET_BUNDLE *)((BYTE *)pModule+pModule->entry_table);
538
539 do {
540 TRACE("num_entries: %d, bundle: %p, next: %04x, pSeg: %p\n", bundle->last - bundle->first, bundle, bundle->next, pSeg);
541 if (!(num_entries = bundle->last - bundle->first))
542 return;
543 entry = (ET_ENTRY *)((BYTE *)bundle+6);
544 while (num_entries--)
545 {
546 /*TRACE("entry: %p, entry->segnum: %d, entry->offs: %04x\n", entry, entry->segnum, entry->offs);*/
547 if (entry->segnum == segnum)
548 {
549 pFunc = ((BYTE *)pSeg+entry->offs);
550 TRACE("pFunc: %p, *(DWORD *)pFunc: %08lx, num_entries: %d\n", pFunc, *(DWORD *)pFunc, num_entries);
551 if (*(pFunc+2) == 0x90)
552 {
553 if (*(WORD *)pFunc == 0x581e) /* push ds, pop ax */
554 {
555 TRACE("patch %04x:%04x -> mov ax, ds\n", sel, entry->offs);
556 *(WORD *)pFunc = 0xd88c; /* mov ax, ds */
557 }
558
559 if (*(WORD *)pFunc == 0xd88c)
560 {
561 if ((entry->flags & 2)) /* public data ? */
562 {
563 TRACE("patch %04x:%04x -> mov ax, dgroup [%04x]\n", sel, entry->offs, dgroup);
564 *pFunc = 0xb8; /* mov ax, */
565 *(WORD *)(pFunc+1) = dgroup;
566 }
567 else
568 if ((pModule->flags & NE_FFLAGS_MULTIPLEDATA)
569 && (entry->flags & 1)) /* exported ? */
570 {
571 TRACE("patch %04x:%04x -> nop, nop\n", sel, entry->offs);
572 *(WORD *)pFunc = 0x9090; /* nop, nop */
573 }
574 }
575 }
576 }
577 entry++;
578 }
579 } while ( (bundle->next)
580 && (bundle = ((ET_BUNDLE *)((BYTE *)pModule + bundle->next))) );
581 }
582
583
584 /***********************************************************************
585 * PatchCodeHandle (KERNEL.110)
586 *
587 * Needed for self-loading modules.
588 */
589 DWORD WINAPI PatchCodeHandle16(HANDLE16 hSeg)
590 {
591 WORD segnum;
592 WORD sel = SEL(hSeg);
593 NE_MODULE *pModule = NE_GetPtr(FarGetOwner16(sel));
594 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE(pModule);
595
596 TRACE_(module)("(%04x);\n", hSeg);
597
598 /* find the segment number of the module that belongs to hSeg */
599 for (segnum = 1; segnum <= pModule->seg_count; segnum++)
600 {
601 if (SEL(pSegTable[segnum-1].hSeg) == sel)
602 {
603 NE_FixupSegmentPrologs(pModule, segnum);
604 break;
605 }
606 }
607
608 return MAKELONG(hSeg, sel);
609 }
610
611
612 /***********************************************************************
613 * NE_GetDLLInitParams
614 */
615 static VOID NE_GetDLLInitParams( NE_MODULE *pModule,
616 WORD *hInst, WORD *ds, WORD *heap )
617 {
618 SEGTABLEENTRY *pSegTable = NE_SEG_TABLE( pModule );
619
620 if (!(pModule->flags & NE_FFLAGS_SINGLEDATA))
621 {
622 if (pModule->flags & NE_FFLAGS_MULTIPLEDATA || pModule->dgroup)
623 {
624 /* Not SINGLEDATA */
625 ERR_(dll)("Library is not marked SINGLEDATA\n");
626 exit(1);
627 }
628 else /* DATA NONE DLL */
629 {
630 *ds = 0;
631 *heap = 0;
632 }
633 }
634 else /* DATA SINGLE DLL */
635 {
636 if (pModule->dgroup) {
637 *ds = SEL(pSegTable[pModule->dgroup-1].hSeg);
638 *heap = pModule->heap_size;
639 }
640 else /* hmm, DLL has no dgroup,
641 but why has it NE_FFLAGS_SINGLEDATA set ?
642 Buggy DLL compiler ? */
643 {
644 *ds = 0;
645 *heap = 0;
646 }
647 }
648
649 *hInst = *ds ? GlobalHandle16(*ds) : pModule->self;
650 }
651
652
653 /***********************************************************************
654 * NE_InitDLL
655 *
656 * Call the DLL initialization code
657 */
658 static BOOL NE_InitDLL( NE_MODULE *pModule )
659 {
660 SEGTABLEENTRY *pSegTable;
661 WORD hInst, ds, heap;
662 CONTEXT86 context;
663
664 pSegTable = NE_SEG_TABLE( pModule );
665
666 if (!(pModule->flags & NE_FFLAGS_LIBMODULE) ||
667 (pModule->flags & NE_FFLAGS_WIN32)) return TRUE; /*not a library*/
668
669 /* Call USER signal handler for Win3.1 compatibility. */
670 NE_CallUserSignalProc( pModule->self, USIG16_DLL_LOAD );
671
672 if (!pModule->cs) return TRUE; /* no initialization code */
673
674
675 /* Registers at initialization must be:
676 * cx heap size
677 * di library instance
678 * ds data segment if any
679 * es:si command line (always 0)
680 */
681
682 memset( &context, 0, sizeof(context) );
683
684 NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
685
686 context.Ecx = heap;
687 context.Edi = hInst;
688 context.SegDs = ds;
689 context.SegEs = ds; /* who knows ... */
690 context.SegFs = wine_get_fs();
691 context.SegGs = wine_get_gs();
692 context.SegCs = SEL(pSegTable[pModule->cs-1].hSeg);
693 context.Eip = pModule->ip;
694 context.Ebp = OFFSETOF(NtCurrentTeb()->cur_stack) + (WORD)&((STACK16FRAME*)0)->bp;
695
696 pModule->cs = 0; /* Don't initialize it twice */
697 TRACE_(dll)("Calling LibMain, cs:ip=%04lx:%04lx ds=%04lx di=%04x cx=%04x\n",
698 context.SegCs, context.Eip, context.SegDs,
699 LOWORD(context.Edi), LOWORD(context.Ecx) );
700 WOWCallback16Ex( 0, WCB16_REGS, 0, NULL, (DWORD *)&context );
701 return TRUE;
702 }
703
704 /***********************************************************************
705 * NE_InitializeDLLs
706 *
707 * Recursively initialize all DLLs (according to the order in which
708 * they where loaded).
709 */
710 void NE_InitializeDLLs( HMODULE16 hModule )
711 {
712 NE_MODULE *pModule;
713 HMODULE16 *pDLL;
714
715 if (!(pModule = NE_GetPtr( hModule ))) return;
716 assert( !(pModule->flags & NE_FFLAGS_WIN32) );
717
718 if (pModule->dlls_to_init)
719 {
720 HGLOBAL16 to_init = pModule->dlls_to_init;
721 pModule->dlls_to_init = 0;
722 for (pDLL = (HMODULE16 *)GlobalLock16( to_init ); *pDLL; pDLL++)
723 {
724 NE_InitializeDLLs( *pDLL );
725 }
726 GlobalFree16( to_init );
727 }
728 NE_InitDLL( pModule );
729 }
730
731
732 /**********************************************************************
733 * NE_CallUserSignalProc
734 *
735 * According to "Undocumented Windows", the task signal proc is
736 * bypassed for module load/unload notifications, and the USER signal
737 * proc is called directly instead. This is what this function does.
738 */
739 typedef DWORD (WINAPI *pSignalProc)( HANDLE16 module, UINT16 code, UINT16 exit,
740 HINSTANCE16 inst, HQUEUE16 queue );
741
742 void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code )
743 {
744 FARPROC16 proc;
745 HMODULE16 user = GetModuleHandle16("user.exe");
746
747 if (!user) return;
748 if ((proc = GetProcAddress16( user, "SignalProc" )))
749 {
750 /* USER is always a builtin dll */
751 pSignalProc sigproc = (pSignalProc)((ENTRYPOINT16 *)MapSL( (SEGPTR)proc ))->target;
752 sigproc( hModule, code, 0, 0, 0 );
753 }
754 }
755
756
757 /***********************************************************************
758 * NE_CallDllEntryPoint
759 *
760 * Call the DllEntryPoint of DLLs with subsystem >= 4.0
761 */
762 typedef DWORD (WINAPI *WinNEEntryProc)(DWORD,WORD,WORD,WORD,DWORD,WORD);
763
764 static void NE_CallDllEntryPoint( NE_MODULE *pModule, DWORD dwReason )
765 {
766 WORD hInst, ds, heap;
767 FARPROC16 entryPoint;
768
769 if (!(pModule->flags & NE_FFLAGS_LIBMODULE)) return;
770 if (!(pModule->flags & NE_FFLAGS_BUILTIN) && pModule->expected_version < 0x0400) return;
771 if (!(entryPoint = GetProcAddress16( pModule->self, "DllEntryPoint" ))) return;
772
773 NE_GetDLLInitParams( pModule, &hInst, &ds, &heap );
774
775 TRACE_(dll)( "Calling %s DllEntryPoint, cs:ip=%04x:%04x\n",
776 NE_MODULE_NAME( pModule ),
777 SELECTOROF(entryPoint), OFFSETOF(entryPoint) );
778
779 if ( pModule->flags & NE_FFLAGS_BUILTIN )
780 {
781 WinNEEntryProc entryProc = (WinNEEntryProc)((ENTRYPOINT16 *)MapSL( (SEGPTR)entryPoint ))->target;
782
783 entryProc( dwReason, hInst, ds, heap, 0, 0 );
784 }
785 else
786 {
787 CONTEXT86 context;
788 WORD args[8];
789
790 memset( &context, 0, sizeof(context) );
791 context.SegDs = ds;
792 context.SegEs = ds; /* who knows ... */
793 context.SegFs = wine_get_fs();
794 context.SegGs = wine_get_gs();
795 context.SegCs = HIWORD(entryPoint);
796 context.Eip = LOWORD(entryPoint);
797 context.Ebp = OFFSETOF( NtCurrentTeb()->cur_stack )
798 + (WORD)&((STACK16FRAME*)0)->bp;
799
800 args[7] = HIWORD(dwReason);
801 args[6] = LOWORD(dwReason);
802 args[5] = hInst;
803 args[4] = ds;
804 args[3] = heap;
805 args[2] = 0; /* HIWORD(dwReserved1) */
806 args[1] = 0; /* LOWORD(dwReserved1) */
807 args[0] = 0; /* wReserved2 */
808 WOWCallback16Ex( 0, WCB16_REGS, sizeof(args), args, (DWORD *)&context );
809 }
810 }
811
812 /***********************************************************************
813 * NE_DllProcessAttach
814 *
815 * Call the DllEntryPoint of all modules this one (recursively)
816 * depends on, according to the order in which they were loaded.
817 *
818 * Note that --as opposed to the PE module case-- there is no notion
819 * of 'module loaded into a process' for NE modules, and hence we
820 * have no place to store the fact that the DllEntryPoint of a
821 * given module was already called on behalf of this process (e.g.
822 * due to some earlier LoadLibrary16 call).
823 *
824 * Thus, we just call the DllEntryPoint twice in that case. Win9x
825 * appears to behave this way as well ...
826 *
827 * This routine must only be called with the Win16Lock held.
828 *
829 * FIXME: We should actually abort loading in case the DllEntryPoint
830 * returns FALSE ...
831 *
832 */
833
834 struct ne_init_list
835 {
836 int count;
837 int size;
838 NE_MODULE **module;
839 };
840
841 static void add_to_init_list( struct ne_init_list *list, NE_MODULE *hModule )
842 {
843 NE_MODULE **newModule = NULL;
844 if ( list->count == list->size )
845 {
846 int newSize = list->size + 128;
847
848 if (list->module)
849 newModule = HeapReAlloc( GetProcessHeap(), 0,
850 list->module, newSize*sizeof(NE_MODULE *) );
851 else
852 newModule = HeapAlloc( GetProcessHeap(), 0,
853 newSize*sizeof(NE_MODULE *) );
854 if ( !newModule )
855 {
856 FIXME_(dll)("Out of memory!\n");
857 return;
858 }
859
860 list->module = newModule;
861 list->size = newSize;
862 }
863
864 list->module[list->count++] = hModule;
865 }
866
867 static void free_init_list( struct ne_init_list *list )
868 {
869 if ( list->module )
870 {
871 HeapFree( GetProcessHeap(), 0, list->module );
872 memset( list, 0, sizeof(*list) );
873 }
874 }
875
876 static void fill_init_list( struct ne_init_list *list, HMODULE16 hModule )
877 {
878 NE_MODULE *pModule;
879 HMODULE16 *pModRef;
880 int i;
881
882 if (!(pModule = NE_GetPtr( hModule ))) return;
883 assert( !(pModule->flags & NE_FFLAGS_WIN32) );
884
885 /* Never add a module twice */
886 for ( i = 0; i < list->count; i++ )
887 if ( list->module[i] == pModule )
888 return;
889
890 /* Check for recursive call */
891 if ( pModule->misc_flags & 0x80 ) return;
892
893 TRACE_(dll)("(%s) - START\n", NE_MODULE_NAME(pModule) );
894
895 /* Tag current module to prevent recursive loop */
896 pModule->misc_flags |= 0x80;
897
898 /* Recursively attach all DLLs this one depends on */
899 pModRef = (HMODULE16 *)((char *)pModule + pModule->modref_table);
900 for ( i = 0; i < pModule->modref_count; i++ )
901 if ( pModRef[i] ) fill_init_list( list, pModRef[i] );
902
903 /* Add current module */
904 add_to_init_list( list, pModule );
905
906 /* Remove recursion flag */
907 pModule->misc_flags &= ~0x80;
908
909 TRACE_(dll)("(%s) - END\n", NE_MODULE_NAME(pModule) );
910 }
911
912 static void call_init_list( struct ne_init_list *list )
913 {
914 int i;
915 for ( i = 0; i < list->count; i++ )
916 NE_CallDllEntryPoint( list->module[i], DLL_PROCESS_ATTACH );
917 }
918
919 void NE_DllProcessAttach( HMODULE16 hModule )
920 {
921 struct ne_init_list list;
922 memset( &list, 0, sizeof(list) );
923
924 fill_init_list( &list, hModule );
925 call_init_list( &list );
926 free_init_list( &list );
927 }
928
929
930 /***********************************************************************
931 * NE_Ne2MemFlags
932 *
933 * This function translates NE segment flags to GlobalAlloc flags
934 */
935 static WORD NE_Ne2MemFlags(WORD flags)
936 {
937 WORD memflags = 0;
938 #if 1
939 if (flags & NE_SEGFLAGS_DISCARDABLE)
940 memflags |= GMEM_DISCARDABLE;
941 if (flags & NE_SEGFLAGS_MOVEABLE ||
942 ( ! (flags & NE_SEGFLAGS_DATA) &&
943 ! (flags & NE_SEGFLAGS_LOADED) &&
944 ! (flags & NE_SEGFLAGS_ALLOCATED)
945 )
946 )
947 memflags |= GMEM_MOVEABLE;
948 memflags |= GMEM_ZEROINIT;
949 #else
950 memflags = GMEM_ZEROINIT | GMEM_FIXED;
951 #endif
952 return memflags;
953 }
954
955 /***********************************************************************
956 * MyAlloc (KERNEL.668) Wine-specific export
957 *
958 * MyAlloc() function for self-loading apps.
959 */
960 DWORD WINAPI MyAlloc16( WORD wFlags, WORD wSize, WORD wElem )
961 {
962 WORD size = wSize << wElem;
963 HANDLE16 hMem = 0;
964
965 if (wSize || (wFlags & NE_SEGFLAGS_MOVEABLE))
966 hMem = GlobalAlloc16( NE_Ne2MemFlags(wFlags), size);
967
968 if ( ((wFlags & 0x7) != 0x1) && /* DATA */
969 ((wFlags & 0x7) != 0x7) ) /* DATA|ALLOCATED|LOADED */
970 {
971 WORD hSel = SEL(hMem);
972 WORD access = SelectorAccessRights16(hSel,0,0);
973
974 access |= 2<<2; /* SEGMENT_CODE */
975 SelectorAccessRights16(hSel,1,access);
976 }
977 if (size)
978 return MAKELONG( hMem, SEL(hMem) );
979 else
980 return MAKELONG( 0, hMem );
981 }
982
983 /***********************************************************************
984 * NE_GetInstance
985 */
986 HINSTANCE16 NE_GetInstance( NE_MODULE *pModule )
987 {
988 if ( !pModule->dgroup )
989 return pModule->self;
990 else
991 {
992 SEGTABLEENTRY *pSeg;
993 pSeg = NE_SEG_TABLE( pModule ) + pModule->dgroup - 1;
994 return pSeg->hSeg;
995 }
996 }
997
998 /***********************************************************************
999 * NE_CreateSegment
1000 */
1001 BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum )
1002 {
1003 SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + segnum - 1;
1004 int minsize;
1005 unsigned char selflags;
1006
1007 assert( !(pModule->flags & NE_FFLAGS_WIN32) );
1008
1009 if ( segnum < 1 || segnum > pModule->seg_count )
1010 return FALSE;
1011
1012 if ( (pModule->flags & NE_FFLAGS_SELFLOAD) && segnum != 1 )
1013 return TRUE; /* selfloader allocates segment itself */
1014
1015 if ( (pSeg->flags & NE_SEGFLAGS_ALLOCATED) && segnum != pModule->dgroup )
1016 return TRUE; /* all but DGROUP only allocated once */
1017
1018 minsize = pSeg->minsize ? pSeg->minsize : 0x10000;
1019 if ( segnum == pModule->ss ) minsize += pModule->stack_size;
1020 if ( segnum == pModule->dgroup ) minsize += pModule->heap_size;
1021
1022 selflags = (pSeg->flags & NE_SEGFLAGS_DATA) ? WINE_LDT_FLAGS_DATA : WINE_LDT_FLAGS_CODE;
1023 if (pSeg->flags & NE_SEGFLAGS_32BIT) selflags |= WINE_LDT_FLAGS_32BIT;
1024 pSeg->hSeg = GLOBAL_Alloc( NE_Ne2MemFlags(pSeg->flags), minsize, pModule->self, selflags );
1025 if (!pSeg->hSeg) return FALSE;
1026
1027 pSeg->flags |= NE_SEGFLAGS_ALLOCATED;
1028 return TRUE;
1029 }
1030
1031 /***********************************************************************
1032 * NE_CreateAllSegments
1033 */
1034 BOOL NE_CreateAllSegments( NE_MODULE *pModule )
1035 {
1036 int i;
1037 for ( i = 1; i <= pModule->seg_count; i++ )
1038 if ( !NE_CreateSegment( pModule, i ) )
1039 return FALSE;
1040
1041 pModule->dgroup_entry = pModule->dgroup ? pModule->seg_table +
1042 (pModule->dgroup - 1) * sizeof(SEGTABLEENTRY) : 0;
1043 return TRUE;
1044 }
1045
1046
1047 /**********************************************************************
1048 * IsSharedSelector (KERNEL.345)
1049 */
1050 BOOL16 WINAPI IsSharedSelector16( HANDLE16 selector )
1051 {
1052 /* Check whether the selector belongs to a DLL */
1053 NE_MODULE *pModule = NE_GetPtr( selector );
1054 if (!pModule) return FALSE;
1055 return (pModule->flags & NE_FFLAGS_LIBMODULE) != 0;
1056 }
Work in progress by Kai Blin