ReactOS 0.4.15-dev-5893-g1bb4167
winldr.c
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1/*
2 * PROJECT: EFI Windows Loader
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: boot/freeldr/freeldr/arch/i386/winldr.c
5 * PURPOSE: Memory related routines
6 * PROGRAMMERS: Aleksey Bragin (aleksey@reactos.org)
7 */
8
9/* INCLUDES ******************************************************************/
10
11#include <freeldr.h>
12#include <ndk/asm.h>
13#include "../../winldr.h"
14
15#include <debug.h>
17
18// This is needed because headers define wrong one for ReactOS
19#undef KIP0PCRADDRESS
20#define KIP0PCRADDRESS 0xffdff000
21
22#define SELFMAP_ENTRY 0x300
23
24// This is needed only for SetProcessorContext routine
25#pragma pack(2)
26typedef struct
27{
30} GDTIDT;
31#pragma pack(4)
32
33/*
34 * Consider adding these definitions into
35 * ntoskrnl/include/internal/i386/intrin_i.h and/or the NDK.
36 */
37
38#define DPL_SYSTEM 0
39#define DPL_USER 3
40
41#define TYPE_TSS16A 0x01 // 16-bit Task State Segment (Available)
42#define TYPE_LDT 0x02 // Local Descriptor Table
43#define TYPE_TSS16B 0x03 // 16-bit Task State Segment (Busy)
44#define TYPE_CALL16 0x04 // 16-bit Call Gate
45#define TYPE_TASK 0x05 // Task Gate (I386_TASK_GATE)
46#define TYPE_INT16 0x06 // 16-bit Interrupt Gate
47#define TYPE_TRAP16 0x07 // 16-bit Trap Gate
48// #define TYPE_RESERVED_1 0x08
49#define TYPE_TSS32A 0x09 // 32-bit Task State Segment (Available) (I386_TSS)
50// #define TYPE_RESERVED_2 0x0A
51#define TYPE_TSS32B 0x0B // 32-bit Task State Segment (Busy) (I386_ACTIVE_TSS)
52#define TYPE_CALL32 0x0C // 32-bit Call Gate (I386_CALL_GATE)
53// #define TYPE_RESERVED_3 0x0D
54#define TYPE_INT32 0x0E // 32-bit Interrupt Gate (I386_INTERRUPT_GATE)
55#define TYPE_TRAP32 0x0F // 32-bit Trap Gate (I386_TRAP_GATE)
56
57#define DESCRIPTOR_ACCESSED 0x1
58#define DESCRIPTOR_READ_WRITE 0x2
59#define DESCRIPTOR_EXECUTE_READ 0x2
60#define DESCRIPTOR_EXPAND_DOWN 0x4
61#define DESCRIPTOR_CONFORMING 0x4
62#define DESCRIPTOR_CODE 0x8
63
64#define TYPE_CODE (0x10 | DESCRIPTOR_CODE | DESCRIPTOR_EXECUTE_READ)
65#define TYPE_DATA (0x10 | DESCRIPTOR_READ_WRITE)
66
70 IN PVOID pGdt,
71 IN USHORT Selector)
72{
73 return (PKGDTENTRY)((ULONG_PTR)pGdt + (Selector & ~RPL_MASK));
74}
75
77VOID
81{
82 Entry->BaseLow = (USHORT)(Base & 0xffff);
83 Entry->HighWord.Bytes.BaseMid = (UCHAR)((Base >> 16) & 0xff);
84 Entry->HighWord.Bytes.BaseHi = (UCHAR)((Base >> 24) & 0xff);
85 // Entry->BaseUpper = (ULONG)(Base >> 32);
86}
87
89VOID
93{
94 if (Limit < 0x100000)
95 {
96 Entry->HighWord.Bits.Granularity = 0;
97 }
98 else
99 {
100 Limit >>= 12;
101 Entry->HighWord.Bits.Granularity = 1;
102 }
103 Entry->LimitLow = (USHORT)(Limit & 0xffff);
104 Entry->HighWord.Bits.LimitHi = ((Limit >> 16) & 0x0f);
105}
106
107VOID
111 IN ULONG Limit,
112 IN UCHAR Type,
113 IN UCHAR Dpl,
114 IN BOOLEAN Granularity,
115 IN UCHAR SegMode) // 0: 16-bit, 1: 32-bit, 2: 64-bit
116{
119 Entry->HighWord.Bits.Type = (Type & 0x1f);
120 Entry->HighWord.Bits.Dpl = (Dpl & 0x3);
121 Entry->HighWord.Bits.Pres = (Type != 0); // Present, must be 1 when the GDT entry is valid.
122 Entry->HighWord.Bits.Sys = 0; // System
123 Entry->HighWord.Bits.Reserved_0 = 0; // LongMode = !!(SegMode & 1);
124 Entry->HighWord.Bits.Default_Big = !!(SegMode & 2);
125 Entry->HighWord.Bits.Granularity |= !!Granularity; // The flag may have been already set by KiSetGdtDescriptorLimit().
126 // Entry->MustBeZero = 0;
127}
128
130VOID
134 IN ULONG Limit,
135 IN UCHAR Type,
136 IN UCHAR Dpl,
137 IN UCHAR SegMode) // 0: 16-bit, 1: 32-bit, 2: 64-bit
138{
139 KiSetGdtEntryEx(Entry, Base, Limit, Type, Dpl, FALSE, SegMode);
140}
141
142#if 0
143VOID
144DumpGDTEntry(ULONG_PTR Base, ULONG Selector)
145{
146 PKGDTENTRY pGdt = (PKGDTENTRY)((ULONG_PTR)Base + Selector);
147
148 TRACE("\n"
149 "Selector 0x%04x\n"
150 "===============\n"
151 "LimitLow = 0x%04x\n"
152 "BaseLow = 0x%04x\n"
153 "HighWord.Bytes.BaseMid = 0x%02x\n"
154 "HighWord.Bytes.Flags1 = 0x%02x\n"
155 "HighWord.Bytes.Flags2 = 0x%02x\n"
156 "HighWord.Bytes.BaseHi = 0x%02x\n"
157 "\n",
158 Selector,
159 pGdt->LimitLow, pGdt->BaseLow,
160 pGdt->HighWord.Bytes.BaseMid,
161 pGdt->HighWord.Bytes.Flags1,
162 pGdt->HighWord.Bytes.Flags2,
163 pGdt->HighWord.Bytes.BaseHi);
164}
165#endif
166
167/* GLOBALS *******************************************************************/
168
171
176
180
181/* FUNCTIONS *****************************************************************/
182
183static
186{
187 ULONG NumPageTables, TotalSize;
189 // It's better to allocate PDE + PTEs contiguous
190
191 // Max number of entries = MaxPageNum >> 10
192 // FIXME: This is a number to describe ALL physical memory
193 // and windows doesn't expect ALL memory mapped...
194 NumPageTables = TotalPagesInLookupTable >> 10;
195
196 TRACE("NumPageTables = %d\n", NumPageTables);
197
198 // Allocate memory block for all these things:
199 // PDE, HAL mapping page table, physical mapping, kernel mapping
200 TotalSize = (1 + 1 + NumPageTables * 2) * MM_PAGE_SIZE;
201
202 // PDE+HAL+KernelPTEs == MemoryData
204
205 // Physical PTEs = FirmwareTemporary
206 PhysicalPageTablesBuffer = (PUCHAR)Buffer + TotalSize - NumPageTables*MM_PAGE_SIZE;
208 NumPageTables*MM_PAGE_SIZE,
210
211 // This check is now redundant
212 if (Buffer + (TotalSize - NumPageTables*MM_PAGE_SIZE) !=
214 {
215 TRACE("There was a problem allocating two adjacent blocks of memory!\n");
216 }
217
219 {
220 UiMessageBox("Impossible to allocate memory block for page tables!");
221 return FALSE;
222 }
223
224 // Zero all this memory block
225 RtlZeroMemory(Buffer, TotalSize);
226
227 // Set up pointers correctly now
229
230 // Map the page directory at 0xC0000000 (maps itself)
231 PDE[SELFMAP_ENTRY].PageFrameNumber = (ULONG)PDE >> MM_PAGE_SHIFT;
234
235 // The last PDE slot is allocated for HAL's memory mapping (Virtual Addresses 0xFFC00000 - 0xFFFFFFFF)
236 HalPageTable = (PHARDWARE_PTE)&Buffer[MM_PAGE_SIZE*1];
237
238 // Map it
239 PDE[1023].PageFrameNumber = (ULONG)HalPageTable >> MM_PAGE_SHIFT;
240 PDE[1023].Valid = 1;
241 PDE[1023].Write = 1;
242
243 // Store pointer to the table for easier access
244 KernelPageTablesBuffer = &Buffer[MM_PAGE_SIZE*2];
245
246 // Zero counters of page tables used
249
250 return TRUE;
251}
252
253static
254VOID
256{
257 //TRACE("Creating PDE Entry %X\n", Entry);
258
259 // Identity mapping
260 *PhysicalPT = (PHARDWARE_PTE)&PhysicalPageTablesBuffer[PhysicalPageTables*MM_PAGE_SIZE];
262
263 PDE[Entry].PageFrameNumber = (ULONG)*PhysicalPT >> MM_PAGE_SHIFT;
264 PDE[Entry].Valid = 1;
265 PDE[Entry].Write = 1;
266
267 if (Entry+(KSEG0_BASE >> 22) > 1023)
268 {
269 TRACE("WARNING! Entry: %X > 1023\n", Entry+(KSEG0_BASE >> 22));
270 }
271
272 // Kernel-mode mapping
273 *KernelPT = (PHARDWARE_PTE)&KernelPageTablesBuffer[KernelPageTables*MM_PAGE_SIZE];
275
276 PDE[Entry+(KSEG0_BASE >> 22)].PageFrameNumber = ((ULONG)*KernelPT >> MM_PAGE_SHIFT);
277 PDE[Entry+(KSEG0_BASE >> 22)].Valid = 1;
278 PDE[Entry+(KSEG0_BASE >> 22)].Write = 1;
279}
280
283 IN PFN_COUNT NumberOfPages,
284 IN BOOLEAN KernelMapping)
285{
286 PHARDWARE_PTE PhysicalPT;
287 PHARDWARE_PTE KernelPT;
289
290 TRACE("MempSetupPaging: SP 0x%X, Number: 0x%X, Kernel: %s\n",
291 StartPage, NumberOfPages, KernelMapping ? "yes" : "no");
292
293 // HACK
294 if (StartPage+NumberOfPages >= 0x80000)
295 {
296 //
297 // We cannot map this as it requires more than 1 PDE
298 // and in fact it's not possible at all ;)
299 //
300 //TRACE("skipping...\n");
301 return TRUE;
302 }
303
304 //
305 // Now actually set up the page tables for identity mapping
306 //
307 for (Page = StartPage; Page < StartPage + NumberOfPages; Page++)
308 {
309 Entry = Page >> 10;
310
311 if (((PULONG)PDE)[Entry] == 0)
312 {
313 MempAllocatePTE(Entry, &PhysicalPT, &KernelPT);
314 }
315 else
316 {
317 PhysicalPT = (PHARDWARE_PTE)(PDE[Entry].PageFrameNumber << MM_PAGE_SHIFT);
318 KernelPT = (PHARDWARE_PTE)(PDE[Entry+(KSEG0_BASE >> 22)].PageFrameNumber << MM_PAGE_SHIFT);
319 }
320
321 PhysicalPT[Page & 0x3ff].PageFrameNumber = Page;
322 PhysicalPT[Page & 0x3ff].Valid = (Page != 0);
323 PhysicalPT[Page & 0x3ff].Write = (Page != 0);
324
325 if (KernelMapping)
326 {
327 if (KernelPT[Page & 0x3ff].Valid) WARN("KernelPT already mapped\n");
328 KernelPT[Page & 0x3ff].PageFrameNumber = Page;
329 KernelPT[Page & 0x3ff].Valid = (Page != 0);
330 KernelPT[Page & 0x3ff].Write = (Page != 0);
331 }
332 }
333
334 return TRUE;
335}
336
337VOID
339{
340 PHARDWARE_PTE KernelPT;
341 PFN_NUMBER Entry = (Page >> 10) + (KSEG0_BASE >> 22);
342
343 /* Don't unmap page directory or HAL entries */
344 if (Entry == SELFMAP_ENTRY || Entry == 1023)
345 return;
346
347 if (PDE[Entry].Valid)
348 {
349 KernelPT = (PHARDWARE_PTE)(PDE[Entry].PageFrameNumber << MM_PAGE_SHIFT);
350
351 if (KernelPT)
352 {
353 KernelPT[Page & 0x3ff].PageFrameNumber = 0;
354 KernelPT[Page & 0x3ff].Valid = 0;
355 KernelPT[Page & 0x3ff].Write = 0;
356 }
357 }
358}
359
360static
361VOID
363{
364 BOOLEAN LocalAPIC;
365 LARGE_INTEGER MsrValue;
366 ULONG APICAddress, CpuInfo[4];
367
368 /* Check if we have a local APIC */
369 __cpuid((int*)CpuInfo, 1);
370 LocalAPIC = (((CpuInfo[3] >> 9) & 1) != 0);
371
372 /* If there is no APIC, just return */
373 if (!LocalAPIC)
374 return;
375
376 /* Read the APIC Address */
377 MsrValue.QuadPart = __readmsr(0x1B);
378 APICAddress = (MsrValue.LowPart & 0xFFFFF000);
379
380 TRACE("Local APIC detected at address 0x%x\n",
381 APICAddress);
382
383 /* Map it */
384 HalPageTable[(APIC_BASE - 0xFFC00000) >> MM_PAGE_SHIFT].PageFrameNumber
385 = APICAddress >> MM_PAGE_SHIFT;
386 HalPageTable[(APIC_BASE - 0xFFC00000) >> MM_PAGE_SHIFT].Valid = 1;
387 HalPageTable[(APIC_BASE - 0xFFC00000) >> MM_PAGE_SHIFT].Write = 1;
388 HalPageTable[(APIC_BASE - 0xFFC00000) >> MM_PAGE_SHIFT].WriteThrough = 1;
389 HalPageTable[(APIC_BASE - 0xFFC00000) >> MM_PAGE_SHIFT].CacheDisable = 1;
390}
391
392static
395{
396 TRACE("HalPageTable: 0x%X\n", HalPageTable);
397
398 /*
399 * The Page Tables have been setup, make special handling
400 * for the boot processor PCR and KI_USER_SHARED_DATA.
401 */
402 HalPageTable[(KI_USER_SHARED_DATA - 0xFFC00000) >> MM_PAGE_SHIFT].PageFrameNumber = PcrBasePage+1;
403 HalPageTable[(KI_USER_SHARED_DATA - 0xFFC00000) >> MM_PAGE_SHIFT].Valid = 1;
404 HalPageTable[(KI_USER_SHARED_DATA - 0xFFC00000) >> MM_PAGE_SHIFT].Write = 1;
405
406 HalPageTable[(KIP0PCRADDRESS - 0xFFC00000) >> MM_PAGE_SHIFT].PageFrameNumber = PcrBasePage;
407 HalPageTable[(KIP0PCRADDRESS - 0xFFC00000) >> MM_PAGE_SHIFT].Valid = 1;
408 HalPageTable[(KIP0PCRADDRESS - 0xFFC00000) >> MM_PAGE_SHIFT].Write = 1;
409
410 /* Map APIC */
412
413 /* Map VGA memory */
414 //VideoMemoryBase = MmMapIoSpace(0xb8000, 4000, MmNonCached);
415 //TRACE("VideoMemoryBase: 0x%X\n", VideoMemoryBase);
416
417 return TRUE;
418}
419
420#define ExtendedBIOSDataArea ((PULONG)0x740)
421#define ExtendedBIOSDataSize ((PULONG)0x744)
422#define RomFontPointers ((PULONG)0x700)
423
424static
426{
427 /* Get the address of the BIOS ROM fonts. Win 2003 videoprt reads these
428 values from address 0x700 .. 0x718 and store them in the registry
429 in HKLM\System\CurrentControlSet\Control\Wow\RomFontPointers */
431
432 /* Store address of the extended BIOS data area in 0x740 */
434
436 {
437 WARN("Couldn't get address of extended BIOS data area\n");
438 }
439 else
440 {
441 TRACE("*ExtendedBIOSDataArea = 0x%lx\n", *ExtendedBIOSDataArea);
442 }
443}
444
446{
447 ULONG TssSize;
448 //ULONG TssPages;
449 ULONG_PTR Pcr = 0;
450 ULONG_PTR Tss = 0;
451 ULONG BlockSize, NumPages;
452
453 LoaderBlock->u.I386.CommonDataArea = NULL; // Force No ABIOS support
454 LoaderBlock->u.I386.MachineType = MACHINE_TYPE_ISA;
455
456 /* Allocate 2 pages for PCR: one for the boot processor PCR and one for KI_USER_SHARED_DATA */
458 PcrBasePage = Pcr >> MM_PAGE_SHIFT;
459 if (Pcr == 0)
460 {
461 UiMessageBox("Could not allocate PCR.");
462 return;
463 }
464
465 /* Allocate TSS */
466 TssSize = (sizeof(KTSS) + MM_PAGE_SIZE) & ~(MM_PAGE_SIZE - 1);
467 //TssPages = TssSize / MM_PAGE_SIZE;
468
470 TssBasePage = Tss >> MM_PAGE_SHIFT;
471 if (Tss == 0)
472 {
473 UiMessageBox("Could not allocate TSS.");
474 return;
475 }
476
477 /* Allocate space for new GDT + IDT */
478 BlockSize = NUM_GDT*sizeof(KGDTENTRY) + NUM_IDT*sizeof(KIDTENTRY);//FIXME: Use GDT/IDT limits here?
479 NumPages = (BlockSize + MM_PAGE_SIZE - 1) >> MM_PAGE_SHIFT;
480 GdtIdt = (PKGDTENTRY)MmAllocateMemoryWithType(NumPages * MM_PAGE_SIZE, LoaderMemoryData);
481 if (GdtIdt == NULL)
482 {
483 UiMessageBox("Could not allocate pages for GDT+IDT!");
484 return;
485 }
486
487 /* Zero newly prepared GDT+IDT */
488 RtlZeroMemory(GdtIdt, NumPages << MM_PAGE_SHIFT);
489
490 // Before we start mapping pages, create a block of memory, which will contain
491 // PDE and PTEs
493 {
494 BugCheck("MempAllocatePageTables failed!\n");
495 }
496
497 /* Map stuff like PCR, KI_USER_SHARED_DATA and Apic */
499
500 /* Set some special fields */
502}
503
504
505VOID
507{
508 GDTIDT GdtDesc, IdtDesc, OldIdt;
509 PKGDTENTRY pGdt;
510 PKIDTENTRY pIdt;
511 USHORT Ldt = 0;
512 ULONG Pcr;
513 ULONG Tss;
514 //ULONG i;
515
516 Pcr = KIP0PCRADDRESS;
517 Tss = KSEG0_BASE | (TssBasePage << MM_PAGE_SHIFT);
518
519 TRACE("GdtIdt %p, Pcr %p, Tss 0x%08x\n",
520 GdtIdt, Pcr, Tss);
521
522 /* Enable paging */
523 //BS->ExitBootServices(ImageHandle,MapKey);
524
525 /* Disable Interrupts */
526 _disable();
527
528 /* Re-initialize EFLAGS */
529 __writeeflags(0);
530
531 /* Set the PDBR */
533
534 /* Enable paging by modifying CR0 */
536
537 /* The Kernel expects the boot processor PCR to be zero-filled on startup */
538 RtlZeroMemory((PVOID)Pcr, MM_PAGE_SIZE);
539
540 /* Get old values of GDT and IDT */
542 __sidt(&IdtDesc);
543
544 /* Save old IDT */
545 OldIdt.Base = IdtDesc.Base;
546 OldIdt.Limit = IdtDesc.Limit;
547
548 /* Prepare new IDT+GDT */
549 GdtDesc.Base = KSEG0_BASE | (ULONG_PTR)GdtIdt;
550 GdtDesc.Limit = NUM_GDT * sizeof(KGDTENTRY) - 1;
551 IdtDesc.Base = (ULONG)((PUCHAR)GdtDesc.Base + GdtDesc.Limit + 1);
552 IdtDesc.Limit = NUM_IDT * sizeof(KIDTENTRY) - 1;
553
554 // ========================
555 // Fill all descriptors now
556 // ========================
557
558 pGdt = (PKGDTENTRY)GdtDesc.Base;
559 pIdt = (PKIDTENTRY)IdtDesc.Base;
560
561 /* KGDT_NULL (0x00) Null Selector - Unused */
562 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_NULL), 0x0000, 0, 0, DPL_SYSTEM, 0);
563 // DumpGDTEntry(GdtDesc.Base, KGDT_NULL);
564
565 /* KGDT_R0_CODE (0x08) Ring 0 Code selector - Flat 4Gb */
566 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R0_CODE), 0x0000, 0xFFFFFFFF,
568 // DumpGDTEntry(GdtDesc.Base, KGDT_R0_CODE);
569
570 /* KGDT_R0_DATA (0x10) Ring 0 Data selector - Flat 4Gb */
571 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R0_DATA), 0x0000, 0xFFFFFFFF,
573 // DumpGDTEntry(GdtDesc.Base, KGDT_R0_DATA);
574
575 /* KGDT_R3_CODE (0x18) Ring 3 Code Selector - Flat 2Gb */
576 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R3_CODE), 0x0000, 0xFFFFFFFF,
577 TYPE_CODE, DPL_USER, 2);
578 // DumpGDTEntry(GdtDesc.Base, KGDT_R3_CODE);
579
580 /* KGDT_R3_DATA (0x20) Ring 3 Data Selector - Flat 2Gb */
581 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R3_DATA), 0x0000, 0xFFFFFFFF,
582 TYPE_DATA, DPL_USER, 2);
583 // DumpGDTEntry(GdtDesc.Base, KGDT_R3_DATA);
584
585 /* KGDT_TSS (0x28) TSS Selector (Ring 0) */
587 0x78-1 /* FIXME: Check this; would be sizeof(KTSS)-1 */,
589 // DumpGDTEntry(GdtDesc.Base, KGDT_TSS);
590
591 /*
592 * KGDT_R0_PCR (0x30) PCR Selector (Ring 0)
593 *
594 * IMPORTANT COMPATIBILITY NOTE:
595 * Windows <= Server 2003 sets a Base == KIP0PCRADDRESS (0xffdff000 on x86)
596 * with a Limit of 1 page (LimitLow == 1, Granularity == 1, that is interpreted
597 * as a "Limit" == 0x1fff but is incorrect, of course).
598 * On Windows Longhorn/Vista+ however, the Base is not hardcoded to KIP0PCRADDRESS
599 * and the limit is set in bytes (Granularity == 0):
600 * Longhorn/Vista reports LimitLow == 0x0fff == MM_PAGE_SIZE - 1, whereas
601 * Windows 7+ uses larger sizes there (not aligned on a page boundary).
602 */
603#if 1
604 /* Server 2003 way */
607#else
608 /* Vista+ way */
609 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R0_PCR), (ULONG32)Pcr, MM_PAGE_SIZE - 1,
611#endif
612 // DumpGDTEntry(GdtDesc.Base, KGDT_R0_PCR);
613
614 /* KGDT_R3_TEB (0x38) Thread Environment Block Selector (Ring 3) */
615 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_R3_TEB), 0x0000, 0x0FFF,
617 // DumpGDTEntry(GdtDesc.Base, KGDT_R3_TEB);
618
619 /* KGDT_VDM_TILE (0x40) VDM BIOS Data Area Selector (Ring 3) */
620 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_VDM_TILE), 0x0400, 0xFFFF,
621 TYPE_DATA, DPL_USER, 0);
622 // DumpGDTEntry(GdtDesc.Base, KGDT_VDM_TILE);
623
624 /* KGDT_LDT (0x48) LDT Selector (Reserved) */
625 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_LDT), 0x0000, 0, 0, DPL_SYSTEM, 0);
626 // DumpGDTEntry(GdtDesc.Base, KGDT_LDT);
627
628 /* KGDT_DF_TSS (0x50) Double-Fault Task Switch Selector (Ring 0) */
629 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_DF_TSS), 0x20000 /* FIXME: Not correct! */,
630 0xFFFF /* FIXME: Not correct! */,
632 // DumpGDTEntry(GdtDesc.Base, KGDT_DF_TSS);
633
634 /* KGDT_NMI_TSS (0x58) NMI Task Switch Selector (Ring 0) */
635 KiSetGdtEntry(KiGetGdtEntry(pGdt, KGDT_NMI_TSS), 0x20000, 0xFFFF,
637 // DumpGDTEntry(GdtDesc.Base, KGDT_NMI_TSS);
638
639 /* Selector (0x60) - Unused (Reserved) on Windows Longhorn/Vista+ */
640 KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x60), 0x20000 /* FIXME: Maybe not correct, but noone cares */,
641 0xFFFF, TYPE_DATA, DPL_SYSTEM, 0);
642 // DumpGDTEntry(GdtDesc.Base, 0x60);
643
644 /* Video Display Buffer Selector (0x68) - Unused (Reserved) on Windows Longhorn/Vista+ */
645 KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x68), 0xB8000, 0x3FFF,
647 // DumpGDTEntry(GdtDesc.Base, 0x68);
648
649 /*
650 * GDT Alias Selector (points to GDT) (0x70)
651 *
652 * IMPORTANT COMPATIBILITY NOTE:
653 * The Base is not fixed to 0xFFFF7000 on Windows Longhorn/Vista+.
654 */
655 KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x70), 0xFFFF7000 /* GdtDesc.Base ?? */, GdtDesc.Limit,
657 // DumpGDTEntry(GdtDesc.Base, 0x70);
658
659 /*
660 * Windows <= Server 2003 defines three additional unused but valid
661 * descriptors there, possibly for debugging purposes only.
662 * They are not present on Windows Longhorn/Vista+.
663 */
664 // KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x78), 0x80400000, 0xffff, TYPE_CODE, DPL_SYSTEM, 0);
665 // KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x80), 0x80400000, 0xffff, TYPE_DATA, DPL_SYSTEM, 0);
666 // KiSetGdtEntry(KiGetGdtEntry(pGdt, 0x88), 0x0000, 0, TYPE_DATA, DPL_SYSTEM, 0);
667
668 /* Copy the old IDT */
669 RtlCopyMemory(pIdt, (PVOID)OldIdt.Base, OldIdt.Limit + 1);
670
671 /* Mask interrupts */
672 //asm("cli\n"); // they are already masked before enabling paged mode
673
674 /* Load GDT+IDT */
676 __lidt(&IdtDesc);
677
678 /* Jump to proper CS and clear prefetch queue */
679#if defined(__GNUC__) || defined(__clang__)
680 asm("ljmp $0x08, $1f\n"
681 "1:\n");
682#elif defined(_MSC_VER)
683 /* We cannot express the above in MASM so we use this far return instead */
684 __asm
685 {
686 push 8
687 push offset resume
688 retf
689 resume:
690 };
691#else
692#error
693#endif
694
695 /* Set SS selector */
696 Ke386SetSs(KGDT_R0_DATA);
697
698 /* Set DS and ES selectors */
699 Ke386SetDs(KGDT_R0_DATA);
700 Ke386SetEs(KGDT_R0_DATA); // This is vital for rep stosd
701
702 /* LDT = not used ever, thus set to 0 */
703 Ke386SetLocalDescriptorTable(Ldt);
704
705 /* Load TSR */
706 Ke386SetTr(KGDT_TSS);
707
708 /* Clear GS */
709 Ke386SetGs(0);
710
711 /* Set FS to PCR */
712 Ke386SetFs(KGDT_R0_PCR);
713
714 // Real end of the function, just for information
715 /* do not uncomment!
716 pop edi;
717 pop esi;
718 pop ebx;
719 mov esp, ebp;
720 pop ebp;
721 ret
722 */
723}
724
725#if DBG
726VOID
728{
729 PULONG PDE_Addr=(PULONG)PDE;//0xC0300000;
730 int i, j;
731
732 TRACE("\nPDE\n");
733
734 for (i=0; i<128; i++)
735 {
736 TRACE("0x%04X | ", i*8);
737
738 for (j=0; j<8; j++)
739 {
740 TRACE("0x%08X ", PDE_Addr[i*8+j]);
741 }
742
743 TRACE("\n");
744 }
745}
746#endif
unsigned char BOOLEAN
Type
Definition: Type.h:7
#define KIP0PCRADDRESS
Definition: amd64.h:27
PVOID GdtIdt
Definition: winldr.c:25
BOOLEAN MempSetupPaging(IN PFN_NUMBER StartPage, IN PFN_NUMBER NumberOfPages, IN BOOLEAN KernelMapping)
Definition: winldr.c:170
static BOOLEAN MempAllocatePageTables(VOID)
Definition: winldr.c:33
ULONG_PTR TssBasePage
Definition: winldr.c:27
static VOID WinLdrpMapApic(VOID)
Definition: winldr.c:211
ULONG_PTR PcrBasePage
Definition: winldr.c:26
VOID MempUnmapPage(PFN_NUMBER Page)
Definition: winldr.c:204
VOID WinLdrSetProcessorContext(void)
Definition: winldr.c:348
VOID MempDump(VOID)
Definition: winldr.c:429
void WinLdrSetupMachineDependent(PLOADER_PARAMETER_BLOCK LoaderBlock)
Definition: winldr.c:379
#define TYPE_CODE
Definition: winldr.c:64
#define DPL_USER
Definition: winldr.c:39
PUCHAR KernelPageTablesBuffer
Definition: winldr.c:173
FORCEINLINE VOID KiSetGdtEntry(IN OUT PKGDTENTRY Entry, IN ULONG32 Base, IN ULONG Limit, IN UCHAR Type, IN UCHAR Dpl, IN UCHAR SegMode)
Definition: winldr.c:131
VOID KiSetGdtEntryEx(IN OUT PKGDTENTRY Entry, IN ULONG32 Base, IN ULONG Limit, IN UCHAR Type, IN UCHAR Dpl, IN BOOLEAN Granularity, IN UCHAR SegMode)
Definition: winldr.c:108
#define SELFMAP_ENTRY
Definition: winldr.c:22
#define TYPE_DATA
Definition: winldr.c:65
PHARDWARE_PTE PDE
Definition: winldr.c:169
FORCEINLINE PKGDTENTRY KiGetGdtEntry(IN PVOID pGdt, IN USHORT Selector)
Definition: winldr.c:69
#define DPL_SYSTEM
Definition: winldr.c:38
static void WinLdrSetupSpecialDataPointers(VOID)
Definition: winldr.c:425
#define RomFontPointers
Definition: winldr.c:422
ULONG KernelPageTables
Definition: winldr.c:175
#define DESCRIPTOR_ACCESSED
Definition: winldr.c:57
#define ExtendedBIOSDataArea
Definition: winldr.c:420
PUCHAR PhysicalPageTablesBuffer
Definition: winldr.c:172
static VOID MempAllocatePTE(ULONG Entry, PHARDWARE_PTE *PhysicalPT, PHARDWARE_PTE *KernelPT)
Definition: winldr.c:255
static BOOLEAN WinLdrMapSpecialPages(void)
Definition: winldr.c:394
#define ExtendedBIOSDataSize
Definition: winldr.c:421
FORCEINLINE VOID KiSetGdtDescriptorBase(IN OUT PKGDTENTRY Entry, IN ULONG32 Base)
Definition: winldr.c:78
PHARDWARE_PTE HalPageTable
Definition: winldr.c:170
ULONG PhysicalPageTables
Definition: winldr.c:174
#define TYPE_TSS32A
Definition: winldr.c:49
FORCEINLINE VOID KiSetGdtDescriptorLimit(IN OUT PKGDTENTRY Entry, IN ULONG Limit)
Definition: winldr.c:90
unsigned int ULONG32
Definition: basetsd.h:125
#define WARN(fmt,...)
Definition: debug.h:112
#define BugCheck(fmt,...)
Definition: debug.h:118
#define DBG_DEFAULT_CHANNEL(ch)
Definition: debug.h:103
#define MachGetExtendedBIOSData(ExtendedBIOSDataArea, ExtendedBIOSDataSize)
Definition: machine.h:122
#define MachVideoGetFontsFromFirmware(RomFontPointers)
Definition: machine.h:100
VOID MmSetMemoryType(PVOID MemoryAddress, SIZE_T MemorySize, TYPE_OF_MEMORY NewType)
Definition: mm.c:144
PVOID MmAllocateMemoryWithType(SIZE_T MemorySize, TYPE_OF_MEMORY MemoryType)
Definition: mm.c:31
PFN_NUMBER TotalPagesInLookupTable
Definition: meminit.c:27
Definition: bufpool.h:45
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define ULONG_PTR
Definition: config.h:101
GLintptr offset
Definition: glext.h:5920
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint GLint GLint j
Definition: glfuncs.h:250
#define Ke386GetGlobalDescriptorTable
Definition: intrin_i.h:376
#define Ke386SetGlobalDescriptorTable
Definition: intrin_i.h:377
void __cdecl _disable(void)
Definition: intrin_arm.h:365
PPC_QUAL void __cpuid(int CPUInfo[], const int InfoType)
Definition: intrin_ppc.h:682
PPC_QUAL unsigned long long __readmsr()
Definition: intrin_ppc.h:741
__INTRIN_INLINE void __writeeflags(uintptr_t Value)
Definition: intrin_x86.h:1669
__INTRIN_INLINE void __lidt(void *Source)
Definition: intrin_x86.h:2018
__INTRIN_INLINE unsigned long __readcr0(void)
Definition: intrin_x86.h:1804
__INTRIN_INLINE void __writecr3(unsigned int Data)
Definition: intrin_x86.h:1794
__INTRIN_INLINE void __writecr0(unsigned int Data)
Definition: intrin_x86.h:1789
__INTRIN_INLINE void __sidt(void *Destination)
Definition: intrin_x86.h:2023
#define CR0_PG
Definition: asm.h:255
#define KIDTENTRY
Definition: ketypes.h:484
#define APIC_BASE
Definition: ketypes.h:263
#define KTSS
Definition: ketypes.h:925
#define KSEG0_BASE
Definition: ketypes.h:278
#define PKGDTENTRY
Definition: ketypes.h:443
#define KGDTENTRY
Definition: ketypes.h:442
#define RPL_MASK
Definition: ketypes.h:69
#define MACHINE_TYPE_ISA
Definition: ketypes.h:52
#define PHARDWARE_PTE
Definition: mmtypes.h:187
#define KGDT_R3_DATA
Definition: ketypes.h:78
#define KGDT_R3_CODE
Definition: ketypes.h:77
#define KGDT_NMI_TSS
Definition: ketypes.h:85
#define KGDT_R3_TEB
Definition: ketypes.h:81
#define KGDT_TSS
Definition: ketypes.h:79
#define KGDT_R0_PCR
Definition: ketypes.h:80
#define KGDT_LDT
Definition: ketypes.h:83
#define KGDT_DF_TSS
Definition: ketypes.h:84
#define KGDT_R0_CODE
Definition: ketypes.h:75
#define KGDT_VDM_TILE
Definition: ketypes.h:82
#define KGDT_R0_DATA
Definition: ketypes.h:76
#define KGDT_NULL
Definition: ketypes.h:74
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2427
#define NUM_IDT
Definition: winldr.h:17
#define NUM_GDT
Definition: winldr.h:16
_In_ PVOID _Out_opt_ BOOLEAN _Out_opt_ PPFN_NUMBER Page
Definition: mm.h:1298
unsigned short USHORT
Definition: pedump.c:61
static void push(calc_node_t *op)
Definition: rpn_ieee.c:113
@ LoaderMemoryData
Definition: arc.h:147
@ LoaderFirmwareTemporary
Definition: arc.h:132
@ LoaderStartupPcrPage
Definition: arc.h:144
#define KI_USER_SHARED_DATA
ULONG PFN_NUMBER
Definition: ke.h:9
#define TRACE(s)
Definition: solgame.cpp:4
base of all file and directory entries
Definition: entries.h:83
Definition: winldr.c:27
USHORT Limit
Definition: winldr.c:28
ULONG Base
Definition: winldr.c:29
ULONG64 PageFrameNumber
Definition: mmtypes.h:78
ULONG64 Write
Definition: mmtypes.h:67
ULONG64 Valid
Definition: mmtypes.h:66
ULONG MachineType
Definition: arc.h:407
PVOID CommonDataArea
Definition: arc.h:406
USHORT BaseLow
Definition: ketypes.h:337
USHORT LimitLow
Definition: ketypes.h:336
struct _KGDTENTRY::@2424::@2425 Bytes
union _KGDTENTRY::@2424 HighWord
union _LOADER_PARAMETER_BLOCK::@3346 u
I386_LOADER_BLOCK I386
Definition: arc.h:515
uint32_t * PULONG
Definition: typedefs.h:59
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
uint32_t ULONG_PTR
Definition: typedefs.h:65
#define IN
Definition: typedefs.h:39
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
#define OUT
Definition: typedefs.h:40
VOID UiMessageBox(PCSTR Format,...)
Definition: ui.c:363
LONGLONG QuadPart
Definition: typedefs.h:114
ULONG LowPart
Definition: typedefs.h:106
static BOOL Write(PBYTE Address, PBYTE Data, SIZE_T Size)
Definition: vmhorizon.c:15
#define FORCEINLINE
Definition: wdftypes.h:67
int WINAPI StartPage(_In_ HDC)
_In_ LONG _In_ LONG Limit
Definition: kefuncs.h:318
ULONG PFN_COUNT
Definition: mmtypes.h:102
unsigned char UCHAR
Definition: xmlstorage.h:181