* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-
+#define _NTSYSTEM_
#include <freeldr.h>
#define NDEBUG
#include <debug.h>
-
-/* Base Addres of Kernel in Physical Memory */
-#define KERNEL_BASE_PHYS 0x200000
-
-/* Bits to shift to convert a Virtual Address into an Offset in the Page Table */
-#define PFN_SHIFT 12
-
-/* Bits to shift to convert a Virtual Address into an Offset in the Page Directory */
-#define PDE_SHIFT 22
-#define PDE_SHIFT_PAE 18
-
-
-/* Converts a Relative Address read from the Kernel into a Physical Address */
-#define RaToPa(p) \
- (ULONG_PTR)((ULONG_PTR)p + KERNEL_BASE_PHYS)
-
-/* Converts a Physical Address Pointer into a Page Frame Number */
-#define PaPtrToPfn(p) \
- (((ULONG_PTR)&p) >> PFN_SHIFT)
-
-/* Converts a Physical Address into a Page Frame Number */
-#define PaToPfn(p) \
- ((p) >> PFN_SHIFT)
-
-#define STARTUP_BASE 0xC0000000
-#define HYPERSPACE_BASE 0xC0400000
-#define HYPERSPACE_PAE_BASE 0xC0800000
-#define APIC_BASE 0xFEC00000
-#define KPCR_BASE 0xFF000000
-
-#define LowMemPageTableIndex 0
-#define StartupPageTableIndex (STARTUP_BASE >> 22)
-#define HyperspacePageTableIndex (HYPERSPACE_BASE >> 22)
-#define KpcrPageTableIndex (KPCR_BASE >> 22)
-#define ApicPageTableIndex (APIC_BASE >> 22)
-
-#define LowMemPageTableIndexPae 0
-#define StartupPageTableIndexPae (STARTUP_BASE >> 21)
-#define HyperspacePageTableIndexPae (HYPERSPACE_PAE_BASE >> 21)
-#define KpcrPageTableIndexPae (KPCR_BASE >> 21)
-#define ApicPageTableIndexPae (APIC_BASE >> 21)
-
-
-#define KernelEntryPoint (KernelEntry - KERNEL_BASE_PHYS) + KernelBase
-
-/* Load Address of Next Module */
-ULONG_PTR NextModuleBase = 0;
-
-/* Currently Opened Module */
-PLOADER_MODULE CurrentModule = NULL;
-
-/* Unrelocated Kernel Base in Virtual Memory */
-ULONG_PTR KernelBase;
-
-/* Whether PAE is to be used or not */
-BOOLEAN PaeModeEnabled;
-
-/* Kernel Entrypoint in Physical Memory */
-ULONG_PTR KernelEntry;
-
-typedef struct _HARDWARE_PTE_X64 {
- ULONG Valid : 1;
- ULONG Write : 1;
- ULONG Owner : 1;
- ULONG WriteThrough : 1;
- ULONG CacheDisable : 1;
- ULONG Accessed : 1;
- ULONG Dirty : 1;
- ULONG LargePage : 1;
- ULONG Global : 1;
- ULONG CopyOnWrite : 1;
- ULONG Prototype : 1;
- ULONG reserved : 1;
- ULONG PageFrameNumber : 20;
- ULONG reserved2 : 31;
- ULONG NoExecute : 1;
-} HARDWARE_PTE_X64, *PHARDWARE_PTE_X64;
-
-typedef struct _PAGE_DIRECTORY_X86 {
- HARDWARE_PTE Pde[1024];
-} PAGE_DIRECTORY_X86, *PPAGE_DIRECTORY_X86;
-
-typedef struct _PAGE_DIRECTORY_X64 {
- HARDWARE_PTE_X64 Pde[2048];
-} PAGE_DIRECTORY_X64, *PPAGE_DIRECTORY_X64;
-
-typedef struct _PAGE_DIRECTORY_TABLE_X64 {
- HARDWARE_PTE_X64 Pde[4];
-} PAGE_DIRECTORY_TABLE_X64, *PPAGE_DIRECTORY_TABLE_X64;
+#undef DbgPrint
/* Page Directory and Tables for non-PAE Systems */
extern PAGE_DIRECTORY_X86 startup_pagedirectory;
extern PAGE_DIRECTORY_X86 lowmem_pagetable;
extern PAGE_DIRECTORY_X86 kernel_pagetable;
-extern ULONG_PTR hyperspace_pagetable;
-extern ULONG_PTR _pae_pagedirtable;
+extern PAGE_DIRECTORY_X86 hyperspace_pagetable;
extern PAGE_DIRECTORY_X86 apic_pagetable;
extern PAGE_DIRECTORY_X86 kpcr_pagetable;
-
-/* Page Directory and Tables for PAE Systems */
-extern PAGE_DIRECTORY_TABLE_X64 startup_pagedirectorytable_pae;
-extern PAGE_DIRECTORY_X64 startup_pagedirectory_pae;
-extern PAGE_DIRECTORY_X64 lowmem_pagetable_pae;
-extern PAGE_DIRECTORY_X64 kernel_pagetable_pae;
-extern ULONG_PTR hyperspace_pagetable_pae;
-extern ULONG_PTR pagedirtable_pae;
-extern PAGE_DIRECTORY_X64 apic_pagetable_pae;
-extern PAGE_DIRECTORY_X64 kpcr_pagetable_pae;
-
+extern PAGE_DIRECTORY_X86 kuser_pagetable;
+extern ULONG_PTR KernelBase;
+extern ROS_KERNEL_ENTRY_POINT KernelEntryPoint;
/* FUNCTIONS *****************************************************************/
/*++
/* Re-initalize EFLAGS */
Ke386EraseFlags();
- /* Get the PAE Mode */
- FrLdrGetPaeMode();
-
/* Initialize the page directory */
FrLdrSetupPageDirectory();
FrLdrSetupPae(ULONG Magic)
{
ULONG_PTR PageDirectoryBaseAddress = (ULONG_PTR)&startup_pagedirectory;
- ASMCODE PagedJump;
-
- if (PaeModeEnabled)
- {
- PageDirectoryBaseAddress = (ULONG_PTR)&startup_pagedirectorytable_pae;
-
- /* Enable PAE */
- Ke386SetCr4(Ke386GetCr4() | X86_CR4_PAE);
- }
/* Set the PDBR */
- Ke386SetCr3(PageDirectoryBaseAddress);
+ __writecr3(PageDirectoryBaseAddress);
/* Enable Paging and Write Protect*/
- Ke386SetCr0(Ke386GetCr0() | X86_CR0_PG | X86_CR0_WP);
+ __writecr0(__readcr0() | X86_CR0_PG | X86_CR0_WP);
/* Jump to Kernel */
- PagedJump = (ASMCODE)(PVOID)(KernelEntryPoint);
- PagedJump(Magic, &LoaderBlock);
-}
-
-/*++
- * FrLdrGetKernelBase
- * INTERNAL
- *
- * Gets the Kernel Base to use.
- *
- * Params:
- *
- * Returns:
- * None.
- *
- * Remarks:
- * Sets both the FreeLdr internal variable as well as the one which
- * will be used by the Kernel.
- *
- *--*/
-static VOID
-FASTCALL
-FrLdrGetKernelBase(VOID)
-{
- PCHAR p;
-
- /* Set KernelBase */
- LoaderBlock.KernelBase = KernelBase;
-
- /* Read Command Line */
- p = (PCHAR)LoaderBlock.CommandLine;
- while ((p = strchr(p, '/')) != NULL) {
-
- /* Find "/3GB" */
- if (!_strnicmp(p + 1, "3GB", 3)) {
-
- /* Make sure there's nothing following it */
- if (p[4] == ' ' || p[4] == 0) {
-
- /* Use 3GB */
- KernelBase = 0xE0000000;
- LoaderBlock.KernelBase = 0xC0000000;
- }
- }
-
- p++;
- }
-}
-
-/*++
- * FrLdrGetPaeMode
- * INTERNAL
- *
- * Determines whether PAE mode should be enabled or not.
- *
- * Params:
- * None.
- *
- * Returns:
- * None.
- *
- * Remarks:
- * None.
- *
- *--*/
-VOID
-FASTCALL
-FrLdrGetPaeMode(VOID)
-{
- BOOLEAN PaeModeSupported;
-
- PaeModeSupported = FALSE;
- PaeModeEnabled = FALSE;
-
- if (CpuidSupported() & 1)
- {
- ULONG eax, ebx, ecx, FeatureBits;
- GetCpuid(1, &eax, &ebx, &ecx, &FeatureBits);
- if (FeatureBits & X86_FEATURE_PAE)
- {
- PaeModeSupported = TRUE;
- }
- }
-
- if (PaeModeSupported)
- {
- PCHAR p;
-
- /* Read Command Line */
- p = (PCHAR)LoaderBlock.CommandLine;
- while ((p = strchr(p, '/')) != NULL) {
-
- p++;
- /* Find "PAE" */
- if (!_strnicmp(p, "PAE", 3)) {
-
- /* Make sure there's nothing following it */
- if (p[3] == ' ' || p[3] == 0) {
-
- /* Use Pae */
- PaeModeEnabled = TRUE;
- break;
- }
- }
- }
- }
+ (*KernelEntryPoint)(Magic, &LoaderBlock);
}
/*++
FrLdrSetupPageDirectory(VOID)
{
PPAGE_DIRECTORY_X86 PageDir;
- PPAGE_DIRECTORY_TABLE_X64 PageDirTablePae;
- PPAGE_DIRECTORY_X64 PageDirPae;
ULONG KernelPageTableIndex;
ULONG i;
- if (PaeModeEnabled) {
-
- /* Get the Kernel Table Index */
- KernelPageTableIndex = (KernelBase >> 21);
-
- /* Get the Startup Page Directory Table */
- PageDirTablePae = (PPAGE_DIRECTORY_TABLE_X64)&startup_pagedirectorytable_pae;
-
- /* Get the Startup Page Directory */
- PageDirPae = (PPAGE_DIRECTORY_X64)&startup_pagedirectory_pae;
-
- /* Set the Startup page directory table */
- for (i = 0; i < 4; i++)
- {
- PageDirTablePae->Pde[i].Valid = 1;
- PageDirTablePae->Pde[i].PageFrameNumber = PaPtrToPfn(startup_pagedirectory_pae) + i;
- }
-
- /* Set up the Low Memory PDE */
- for (i = 0; i < 2; i++)
- {
- PageDirPae->Pde[LowMemPageTableIndexPae + i].Valid = 1;
- PageDirPae->Pde[LowMemPageTableIndexPae + i].Write = 1;
- PageDirPae->Pde[LowMemPageTableIndexPae + i].PageFrameNumber = PaPtrToPfn(lowmem_pagetable_pae) + i;
- }
-
- /* Set up the Kernel PDEs */
- for (i = 0; i < 3; i++)
- {
- PageDirPae->Pde[KernelPageTableIndex + i].Valid = 1;
- PageDirPae->Pde[KernelPageTableIndex + i].Write = 1;
- PageDirPae->Pde[KernelPageTableIndex + i].PageFrameNumber = PaPtrToPfn(kernel_pagetable_pae) + i;
- }
-
- /* Set up the Startup PDE */
- for (i = 0; i < 4; i++)
- {
- PageDirPae->Pde[StartupPageTableIndexPae + i].Valid = 1;
- PageDirPae->Pde[StartupPageTableIndexPae + i].Write = 1;
- PageDirPae->Pde[StartupPageTableIndexPae + i].PageFrameNumber = PaPtrToPfn(startup_pagedirectory_pae) + i;
- }
-
- /* Set up the Hyperspace PDE */
- for (i = 0; i < 2; i++)
- {
- PageDirPae->Pde[HyperspacePageTableIndexPae + i].Valid = 1;
- PageDirPae->Pde[HyperspacePageTableIndexPae + i].Write = 1;
- PageDirPae->Pde[HyperspacePageTableIndexPae + i].PageFrameNumber = PaPtrToPfn(hyperspace_pagetable_pae) + i;
- }
-
- /* Set up the Apic PDE */
- for (i = 0; i < 2; i++)
- {
- PageDirPae->Pde[ApicPageTableIndexPae + i].Valid = 1;
- PageDirPae->Pde[ApicPageTableIndexPae + i].Write = 1;
- PageDirPae->Pde[ApicPageTableIndexPae + i].PageFrameNumber = PaPtrToPfn(apic_pagetable_pae) + i;
- }
-
- /* Set up the KPCR PDE */
- PageDirPae->Pde[KpcrPageTableIndexPae].Valid = 1;
- PageDirPae->Pde[KpcrPageTableIndexPae].Write = 1;
- PageDirPae->Pde[KpcrPageTableIndexPae].PageFrameNumber = PaPtrToPfn(kpcr_pagetable_pae);
-
- /* Set up Low Memory PTEs */
- PageDirPae = (PPAGE_DIRECTORY_X64)&lowmem_pagetable_pae;
- for (i=0; i<1024; i++) {
-
- PageDirPae->Pde[i].Valid = 1;
- PageDirPae->Pde[i].Write = 1;
- PageDirPae->Pde[i].Owner = 1;
- PageDirPae->Pde[i].PageFrameNumber = i;
- }
-
- /* Set up Kernel PTEs */
- PageDirPae = (PPAGE_DIRECTORY_X64)&kernel_pagetable_pae;
- for (i=0; i<1536; i++) {
-
- PageDirPae->Pde[i].Valid = 1;
- PageDirPae->Pde[i].Write = 1;
- PageDirPae->Pde[i].PageFrameNumber = PaToPfn(KERNEL_BASE_PHYS) + i;
- }
-
- /* Set up APIC PTEs */
- PageDirPae = (PPAGE_DIRECTORY_X64)&apic_pagetable_pae;
- PageDirPae->Pde[0].Valid = 1;
- PageDirPae->Pde[0].Write = 1;
- PageDirPae->Pde[0].CacheDisable = 1;
- PageDirPae->Pde[0].WriteThrough = 1;
- PageDirPae->Pde[0].PageFrameNumber = PaToPfn(APIC_BASE);
- PageDirPae->Pde[0x200].Valid = 1;
- PageDirPae->Pde[0x200].Write = 1;
- PageDirPae->Pde[0x200].CacheDisable = 1;
- PageDirPae->Pde[0x200].WriteThrough = 1;
- PageDirPae->Pde[0x200].PageFrameNumber = PaToPfn(APIC_BASE + KERNEL_BASE_PHYS);
-
- /* Set up KPCR PTEs */
- PageDirPae = (PPAGE_DIRECTORY_X64)&kpcr_pagetable_pae;
- PageDirPae->Pde[0].Valid = 1;
- PageDirPae->Pde[0].Write = 1;
- PageDirPae->Pde[0].PageFrameNumber = 1;
-
- } else {
-
- /* Get the Kernel Table Index */
- KernelPageTableIndex = KernelBase >> PDE_SHIFT;
-
- /* Get the Startup Page Directory */
- PageDir = (PPAGE_DIRECTORY_X86)&startup_pagedirectory;
-
- /* Set up the Low Memory PDE */
- PageDir->Pde[LowMemPageTableIndex].Valid = 1;
- PageDir->Pde[LowMemPageTableIndex].Write = 1;
- PageDir->Pde[LowMemPageTableIndex].PageFrameNumber = PaPtrToPfn(lowmem_pagetable);
-
- /* Set up the Kernel PDEs */
- PageDir->Pde[KernelPageTableIndex].Valid = 1;
- PageDir->Pde[KernelPageTableIndex].Write = 1;
- PageDir->Pde[KernelPageTableIndex].PageFrameNumber = PaPtrToPfn(kernel_pagetable);
- PageDir->Pde[KernelPageTableIndex + 1].Valid = 1;
- PageDir->Pde[KernelPageTableIndex + 1].Write = 1;
- PageDir->Pde[KernelPageTableIndex + 1].PageFrameNumber = PaPtrToPfn(kernel_pagetable + 4096);
-
- /* Set up the Startup PDE */
- PageDir->Pde[StartupPageTableIndex].Valid = 1;
- PageDir->Pde[StartupPageTableIndex].Write = 1;
- PageDir->Pde[StartupPageTableIndex].PageFrameNumber = PaPtrToPfn(startup_pagedirectory);
-
- /* Set up the Hyperspace PDE */
- PageDir->Pde[HyperspacePageTableIndex].Valid = 1;
- PageDir->Pde[HyperspacePageTableIndex].Write = 1;
- PageDir->Pde[HyperspacePageTableIndex].PageFrameNumber = PaPtrToPfn(hyperspace_pagetable);
-
- /* Set up the Apic PDE */
- PageDir->Pde[ApicPageTableIndex].Valid = 1;
- PageDir->Pde[ApicPageTableIndex].Write = 1;
- PageDir->Pde[ApicPageTableIndex].PageFrameNumber = PaPtrToPfn(apic_pagetable);
-
- /* Set up the KPCR PDE */
- PageDir->Pde[KpcrPageTableIndex].Valid = 1;
- PageDir->Pde[KpcrPageTableIndex].Write = 1;
- PageDir->Pde[KpcrPageTableIndex].PageFrameNumber = PaPtrToPfn(kpcr_pagetable);
-
- /* Set up Low Memory PTEs */
- PageDir = (PPAGE_DIRECTORY_X86)&lowmem_pagetable;
- for (i=0; i<1024; i++) {
-
- PageDir->Pde[i].Valid = 1;
- PageDir->Pde[i].Write = 1;
- PageDir->Pde[i].Owner = 1;
- PageDir->Pde[i].PageFrameNumber = PaToPfn(i * PAGE_SIZE);
- }
-
- /* Set up Kernel PTEs */
- PageDir = (PPAGE_DIRECTORY_X86)&kernel_pagetable;
- for (i=0; i<1536; i++) {
-
- PageDir->Pde[i].Valid = 1;
- PageDir->Pde[i].Write = 1;
- PageDir->Pde[i].PageFrameNumber = PaToPfn(KERNEL_BASE_PHYS + i * PAGE_SIZE);
- }
-
- /* Set up APIC PTEs */
- PageDir = (PPAGE_DIRECTORY_X86)&apic_pagetable;
- PageDir->Pde[0].Valid = 1;
- PageDir->Pde[0].Write = 1;
- PageDir->Pde[0].CacheDisable = 1;
- PageDir->Pde[0].WriteThrough = 1;
- PageDir->Pde[0].PageFrameNumber = PaToPfn(APIC_BASE);
- PageDir->Pde[0x200].Valid = 1;
- PageDir->Pde[0x200].Write = 1;
- PageDir->Pde[0x200].CacheDisable = 1;
- PageDir->Pde[0x200].WriteThrough = 1;
- PageDir->Pde[0x200].PageFrameNumber = PaToPfn(APIC_BASE + KERNEL_BASE_PHYS);
-
- /* Set up KPCR PTEs */
- PageDir = (PPAGE_DIRECTORY_X86)&kpcr_pagetable;
- PageDir->Pde[0].Valid = 1;
- PageDir->Pde[0].Write = 1;
- PageDir->Pde[0].PageFrameNumber = 1;
- }
- return;
-}
-
-/*++
- * FrLdrMapKernel
- * INTERNAL
- *
- * Maps the Kernel into memory, does PE Section Mapping, initalizes the
- * uninitialized data sections, and relocates the image.
- *
- * Params:
- * KernelImage - FILE Structure representing the ntoskrnl image file.
- *
- * Returns:
- * TRUE if the Kernel was mapped.
- *
- * Remarks:
- * None.
- *
- *--*/
-BOOLEAN
-NTAPI
-FrLdrMapKernel(FILE *KernelImage)
-{
- PIMAGE_DOS_HEADER ImageHeader;
- PIMAGE_NT_HEADERS NtHeader;
- PIMAGE_SECTION_HEADER Section;
- ULONG SectionCount;
- ULONG ImageSize;
- ULONG_PTR SourceSection;
- ULONG_PTR TargetSection;
- ULONG SectionSize;
- INT i;
- PIMAGE_DATA_DIRECTORY RelocationDDir;
- PIMAGE_BASE_RELOCATION RelocationDir, RelocationEnd;
- ULONG Count;
- ULONG_PTR Address, MaxAddress;
- PUSHORT TypeOffset;
- ULONG_PTR Delta;
- PUSHORT ShortPtr;
- PULONG LongPtr;
-
- /* Allocate 1024 bytes for PE Header */
- ImageHeader = (PIMAGE_DOS_HEADER)MmAllocateMemory(1024);
-
- /* Make sure it was succesful */
- if (ImageHeader == NULL) {
-
- return FALSE;
- }
-
- /* Load the first 1024 bytes of the kernel image so we can read the PE header */
- if (!FsReadFile(KernelImage, 1024, NULL, ImageHeader)) {
-
- /* Fail if we couldn't read */
- MmFreeMemory(ImageHeader);
- return FALSE;
- }
-
- /* Now read the MZ header to get the offset to the PE Header */
- NtHeader = (PIMAGE_NT_HEADERS)((PCHAR)ImageHeader + ImageHeader->e_lfanew);
-
- /* Get Kernel Base */
- KernelBase = NtHeader->OptionalHeader.ImageBase;
- FrLdrGetKernelBase();
-
- /* Save Entrypoint */
- KernelEntry = RaToPa(NtHeader->OptionalHeader.AddressOfEntryPoint);
-
- /* Save the Image Size */
- ImageSize = NtHeader->OptionalHeader.SizeOfImage;
-
- /* Free the Header */
- MmFreeMemory(ImageHeader);
-
- /* Set the file pointer to zero */
- FsSetFilePointer(KernelImage, 0);
-
- /* Load the file image */
- FsReadFile(KernelImage, ImageSize, NULL, (PVOID)KERNEL_BASE_PHYS);
-
- /* Reload the NT Header */
- NtHeader = (PIMAGE_NT_HEADERS)((PCHAR)KERNEL_BASE_PHYS + ImageHeader->e_lfanew);
-
- /* Load the first section */
- Section = IMAGE_FIRST_SECTION(NtHeader);
- SectionCount = NtHeader->FileHeader.NumberOfSections - 1;
-
- /* Now go to the last section */
- Section += SectionCount;
-
- /* Walk each section backwards */
- for (i=(INT)SectionCount; i >= 0; i--, Section--) {
-
- /* Get the disk location and the memory location, and the size */
- SourceSection = RaToPa(Section->PointerToRawData);
- TargetSection = RaToPa(Section->VirtualAddress);
- SectionSize = Section->SizeOfRawData;
-
- /* If the section is already mapped correctly, go to the next */
- if (SourceSection == TargetSection) continue;
-
- /* Load it into memory */
- memmove((PVOID)TargetSection, (PVOID)SourceSection, SectionSize);
-
- /* Check for unitilizated data */
- if (Section->SizeOfRawData < Section->Misc.VirtualSize) {
-
- /* Zero it out */
- memset((PVOID)RaToPa(Section->VirtualAddress + Section->SizeOfRawData),
- 0,
- Section->Misc.VirtualSize - Section->SizeOfRawData);
- }
- }
-
- /* Get the Relocation Data Directory */
- RelocationDDir = &NtHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
-
- /* Get the Relocation Section Start and End*/
- RelocationDir = (PIMAGE_BASE_RELOCATION)(KERNEL_BASE_PHYS + RelocationDDir->VirtualAddress);
- RelocationEnd = (PIMAGE_BASE_RELOCATION)((ULONG_PTR)RelocationDir + RelocationDDir->Size);
-
- /* Calculate Difference between Real Base and Compiled Base*/
- Delta = KernelBase - NtHeader->OptionalHeader.ImageBase;
-
- /* Determine how far we shoudl relocate */
- MaxAddress = KERNEL_BASE_PHYS + ImageSize;
-
- /* Relocate until we've processed all the blocks */
- while (RelocationDir < RelocationEnd && RelocationDir->SizeOfBlock > 0) {
-
- /* See how many Relocation Blocks we have */
- Count = (RelocationDir->SizeOfBlock - sizeof(IMAGE_BASE_RELOCATION)) / sizeof(USHORT);
-
- /* Calculate the Address of this Directory */
- Address = KERNEL_BASE_PHYS + RelocationDir->VirtualAddress;
-
- /* Calculate the Offset of the Type */
- TypeOffset = (PUSHORT)(RelocationDir + 1);
-
- for (i = 0; i < (INT)Count; i++) {
-
- ShortPtr = (PUSHORT)(Address + (*TypeOffset & 0xFFF));
-
- switch (*TypeOffset >> 12) {
-
- case IMAGE_REL_BASED_ABSOLUTE:
- break;
-
- case IMAGE_REL_BASED_HIGH:
- *ShortPtr += HIWORD(Delta);
- break;
-
- case IMAGE_REL_BASED_LOW:
- *ShortPtr += LOWORD(Delta);
- break;
-
- case IMAGE_REL_BASED_HIGHLOW:
- LongPtr = (PULONG)ShortPtr;
- *LongPtr += Delta;
- break;
- }
-
- TypeOffset++;
- }
-
- /* Move to the next Relocation Table */
- RelocationDir = (PIMAGE_BASE_RELOCATION)((ULONG_PTR)RelocationDir + RelocationDir->SizeOfBlock);
+ /* Get the Kernel Table Index */
+ KernelPageTableIndex = KernelBase >> PDE_SHIFT;
+
+ /* Get the Startup Page Directory */
+ PageDir = (PPAGE_DIRECTORY_X86)&startup_pagedirectory;
+
+ /* Set up the Low Memory PDE */
+ PageDir->Pde[LowMemPageTableIndex].Valid = 1;
+ PageDir->Pde[LowMemPageTableIndex].Write = 1;
+ PageDir->Pde[LowMemPageTableIndex].PageFrameNumber = PaPtrToPfn(lowmem_pagetable);
+
+ /* Set up the Kernel PDEs */
+ PageDir->Pde[KernelPageTableIndex].Valid = 1;
+ PageDir->Pde[KernelPageTableIndex].Write = 1;
+ PageDir->Pde[KernelPageTableIndex].PageFrameNumber = PaPtrToPfn(kernel_pagetable);
+ PageDir->Pde[KernelPageTableIndex + 1].Valid = 1;
+ PageDir->Pde[KernelPageTableIndex + 1].Write = 1;
+ PageDir->Pde[KernelPageTableIndex + 1].PageFrameNumber = PaPtrToPfn(kernel_pagetable + 4096);
+
+ /* Set up the Startup PDE */
+ PageDir->Pde[StartupPageTableIndex].Valid = 1;
+ PageDir->Pde[StartupPageTableIndex].Write = 1;
+ PageDir->Pde[StartupPageTableIndex].PageFrameNumber = PaPtrToPfn(startup_pagedirectory);
+
+ /* Set up the Hyperspace PDE */
+ PageDir->Pde[HyperspacePageTableIndex].Valid = 1;
+ PageDir->Pde[HyperspacePageTableIndex].Write = 1;
+ PageDir->Pde[HyperspacePageTableIndex].PageFrameNumber = PaPtrToPfn(hyperspace_pagetable);
+
+ /* Set up the HAL PDE */
+ PageDir->Pde[HalPageTableIndex].Valid = 1;
+ PageDir->Pde[HalPageTableIndex].Write = 1;
+ PageDir->Pde[HalPageTableIndex].PageFrameNumber = PaPtrToPfn(apic_pagetable);
+
+ /* Set up Low Memory PTEs */
+ PageDir = (PPAGE_DIRECTORY_X86)&lowmem_pagetable;
+ for (i=0; i<1024; i++)
+ {
+ PageDir->Pde[i].Valid = 1;
+ PageDir->Pde[i].Write = 1;
+ PageDir->Pde[i].Owner = 1;
+ PageDir->Pde[i].PageFrameNumber = PaToPfn(i * PAGE_SIZE);
}
- /* Fill out Module Data Structure */
- reactos_modules[0].ModStart = KernelBase;
- reactos_modules[0].ModEnd = KernelBase + ImageSize;
- strcpy(reactos_module_strings[0], "ntoskrnl.exe");
- reactos_modules[0].String = (ULONG_PTR)reactos_module_strings[0];
- LoaderBlock.ModsCount++;
-
- /* Increase the next Load Base */
- NextModuleBase = ROUND_UP(KERNEL_BASE_PHYS + ImageSize, PAGE_SIZE);
-
- /* Return Success */
- return TRUE;
-}
-
-ULONG_PTR
-NTAPI
-FrLdrLoadModule(FILE *ModuleImage,
- LPCSTR ModuleName,
- PULONG ModuleSize)
-{
- ULONG LocalModuleSize;
- PLOADER_MODULE ModuleData;
- LPSTR NameBuffer;
- LPSTR TempName;
-
- /* Get current module data structure and module name string array */
- ModuleData = &reactos_modules[LoaderBlock.ModsCount];
-
- /* Get only the Module Name */
- do {
-
- TempName = strchr(ModuleName, '\\');
-
- if(TempName) {
- ModuleName = TempName + 1;
- }
-
- } while(TempName);
- NameBuffer = reactos_module_strings[LoaderBlock.ModsCount];
-
- /* Get Module Size */
- LocalModuleSize = FsGetFileSize(ModuleImage);
-
- /* Fill out Module Data Structure */
- ModuleData->ModStart = NextModuleBase;
- ModuleData->ModEnd = NextModuleBase + LocalModuleSize;
-
- /* Save name */
- strcpy(NameBuffer, ModuleName);
- ModuleData->String = (ULONG_PTR)NameBuffer;
-
- /* Load the file image */
- FsReadFile(ModuleImage, LocalModuleSize, NULL, (PVOID)NextModuleBase);
-
- /* Move to next memory block and increase Module Count */
- NextModuleBase = ROUND_UP(ModuleData->ModEnd, PAGE_SIZE);
- LoaderBlock.ModsCount++;
-
- /* Return Module Size if required */
- if (ModuleSize != NULL) {
- *ModuleSize = LocalModuleSize;
+ /* Set up Kernel PTEs */
+ PageDir = (PPAGE_DIRECTORY_X86)&kernel_pagetable;
+ for (i=0; i<1536; i++)
+ {
+ PageDir->Pde[i].Valid = 1;
+ PageDir->Pde[i].Write = 1;
+ PageDir->Pde[i].PageFrameNumber = PaToPfn(KERNEL_BASE_PHYS + i * PAGE_SIZE);
}
- return(ModuleData->ModStart);
-}
-
-ULONG_PTR
-NTAPI
-FrLdrCreateModule(LPCSTR ModuleName)
-{
- PLOADER_MODULE ModuleData;
- LPSTR NameBuffer;
-
- /* Get current module data structure and module name string array */
- ModuleData = &reactos_modules[LoaderBlock.ModsCount];
- NameBuffer = reactos_module_strings[LoaderBlock.ModsCount];
-
- /* Set up the structure */
- ModuleData->ModStart = NextModuleBase;
- ModuleData->ModEnd = -1;
-
- /* Copy the name */
- strcpy(NameBuffer, ModuleName);
- ModuleData->String = (ULONG_PTR)NameBuffer;
-
- /* Set the current Module */
- CurrentModule = ModuleData;
-
- /* Return Module Base Address */
- return(ModuleData->ModStart);
+ /* Setup APIC Base */
+ PageDir = (PPAGE_DIRECTORY_X86)&apic_pagetable;
+ PageDir->Pde[0].Valid = 1;
+ PageDir->Pde[0].Write = 1;
+ PageDir->Pde[0].CacheDisable = 1;
+ PageDir->Pde[0].WriteThrough = 1;
+ PageDir->Pde[0].PageFrameNumber = PaToPfn(HAL_BASE);
+ PageDir->Pde[0x200].Valid = 1;
+ PageDir->Pde[0x200].Write = 1;
+ PageDir->Pde[0x200].CacheDisable = 1;
+ PageDir->Pde[0x200].WriteThrough = 1;
+ PageDir->Pde[0x200].PageFrameNumber = PaToPfn(HAL_BASE + KERNEL_BASE_PHYS);
+
+ /* Setup KUSER_SHARED_DATA Base */
+ PageDir->Pde[0x1F0].Valid = 1;
+ PageDir->Pde[0x1F0].Write = 1;
+ PageDir->Pde[0x1F0].PageFrameNumber = 2;
+
+ /* Setup KPCR Base*/
+ PageDir->Pde[0x1FF].Valid = 1;
+ PageDir->Pde[0x1FF].Write = 1;
+ PageDir->Pde[0x1FF].PageFrameNumber = 1;
}
-BOOLEAN
-NTAPI
-FrLdrCloseModule(ULONG_PTR ModuleBase,
- ULONG ModuleSize)
-{
- PLOADER_MODULE ModuleData = CurrentModule;
-
- /* Make sure a module is opened */
- if (ModuleData) {
-
- /* Make sure this is the right module and that it hasn't been closed */
- if ((ModuleBase == ModuleData->ModStart) && (ModuleData->ModEnd == (ULONG_PTR)-1)) {
-
- /* Close the Module */
- ModuleData->ModEnd = ModuleData->ModStart + ModuleSize;
-
- /* Set the next Module Base and increase the number of modules */
- NextModuleBase = ROUND_UP(ModuleData->ModEnd, PAGE_SIZE);
- LoaderBlock.ModsCount++;
-
- /* Close the currently opened module */
- CurrentModule = NULL;
-
- /* Success */
- return(TRUE);
- }
- }
-
- /* Failure path */
- return(FALSE);
-}
projects / reactos.git / blobdiff