145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
#include "KeMemory32.h"
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#include "KeDef.h"
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#include "KeGraph32.h"
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ULONG32 KeNativeAPI SegmentToPhyscicalAddress(ULONG16 Segment)
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{
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PIAGDT32 PDescriptor = &KeGDT[(Segment>>3)];
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return (PDescriptor->BaseHigh<<24 | PDescriptor->BaseMid<<16 | PDescriptor->BaseLow);
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};
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PVOID KeNativeAPI KeMemorySet(PVOID Source, BYTE Value, ULONG32 Length)
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{
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PBYTE src = (PBYTE)Source;
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while(Length > 0)
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{
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_asm_KePrintHex32(Length);
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_asm_KePrintStr32("\n");
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*src = Value;
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src++;
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Length--;
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};
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return 0;
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}
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PVOID KeNativeAPI KeMemoryCopy(PVOID src, PVOID dst, ULONG32 size)
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{
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ULONG32 i = 0;
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for(i=0;i<size;i++)
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{
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*((PCHAR)dst+i)=*((PCHAR)src+i);
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}
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return dst;
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}
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VOID KeNativeAPI KeInitializeWritePDE4KDescriptor32(PKePDE4KDescriptor32 Desc,ULONG32 P,ULONG32 RW, ULONG32 US,ULONG32 PWT,ULONG32 PCD,ULONG32 A,ULONG32 PS,ULONG32 Address)
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{
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Desc->P = P;
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Desc->Address = Address;
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Desc->A = A;
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Desc->PS = PS;
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Desc->US = US;
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Desc->RW = RW;
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Desc->PWT = PWT;
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Desc->PCD = PCD;
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return;
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}
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VOID KeNativeAPI KeWritePDE4K32(PKePDE4KDescriptor32 Desc, PVOID Dst)
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{
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ULONG32 temp = 0;
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temp = Desc->Address;
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temp = (temp & 0xfffff000);
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temp = temp + Desc->P;
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temp = temp + Desc->RW;
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temp = temp + Desc->US;
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temp = temp + Desc->PWT;
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temp = temp + Desc->PCD;
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temp = temp + Desc->A;
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temp = temp + Desc->PS;
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*(PULONG32)Dst = temp;
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return;
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}
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VOID KeNativeAPI KeInitializeWritePTE4K32Descriptor(PKePTE4KDescriptor32 Desc,ULONG32 P,ULONG32 RW, ULONG32 US,ULONG32 PWT,ULONG32 PCD,ULONG32 A,ULONG32 D,ULONG32 PS,ULONG32 G,ULONG32 Address)
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{
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Desc->P = P;
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Desc->Address = Address;
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Desc->A = A;
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Desc->US = US;
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Desc->RW = RW;
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Desc->PWT = PWT;
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Desc->PCD = PCD;
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Desc->PS = PS;
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Desc->G = G;
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Desc->D = D;
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return;
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}
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VOID KeNativeAPI KeGetPDEInfo(PKePDE4KDescriptor32 pDesc,ULONG32 Virtual_Address)
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{
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ULONG32 temp = *(PULONG32)Virtual_Address;
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pDesc->Address = (temp >> 12) << 12;
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pDesc->A = temp & KeWritePDE4K32_A_1;
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pDesc->P = temp & KeWritePDE4K32_P_1;
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pDesc->PCD = temp & KeWritePDE4K32_PCD_1;
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pDesc->PS = temp & KeWritePDE4K32_PS_1;
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pDesc->US = temp & KeWritePDE4K32_US_1;
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pDesc->RW = temp & KeWritePDE4K32_RW_1;
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pDesc->PWT = temp & KeWritePDE4K32_PWT_1;
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return;
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}
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VOID KeNativeAPI KeGetPTEInfo(PKePTE4KDescriptor32 pDesc,ULONG32 Virtual_Address)
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{
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ULONG32 temp = *(PULONG32)Virtual_Address;
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pDesc->Address = (temp>>12)<<12;
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pDesc->P = temp & KeWritePTE4K32_P_1;
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pDesc->D = temp & KeWritePTE4K32_D_1;
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pDesc->US = temp & KeWritePTE4K32_US_1;
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pDesc->PCD = temp & KeWritePTE4K32_PCD_1;
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pDesc->PWT = temp & KeWritePTE4K32_PWT_1;
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pDesc->PS = temp & KeWritePTE4K32_PS_1;
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pDesc->RW = temp & KeWritePTE4K32_RW_1;
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pDesc->G = temp & KeWritePTE4K32_G_1;
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return;
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}
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VOID KeNativeAPI KeWritePTE4K32(PKePTE4KDescriptor32 Desc,PVOID Dst )
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{
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ULONG32 temp = 0;
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temp = Desc->Address;
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temp = (temp & 0xfffff000);
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temp += Desc->P;
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temp += Desc->RW;
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temp += Desc->US;
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temp += Desc->PWT;
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temp += Desc->PCD;
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temp += Desc->A;
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temp += Desc->D;
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temp += Desc->PS;
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temp += Desc->G;
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*(PULONG32)Dst = temp;
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}
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ULONG32 KeNativeAPI KeGetPDEIndex4K32(ULONG32 Virtual_Address)
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{
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return Virtual_Address >> 22;
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}
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ULONG32 KeNativeAPI KeGetPTEIndex4K32(ULONG32 Virtual_Address)
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{
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return (Virtual_Address << 10) >> 22;
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}
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ULONG32 KeNativeAPI KeSetMappingAddress(PVOID PDE_Dir_Address,ULONG32 Physical_Address,ULONG32 Virtual_Address)
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{
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ULONG32 PDEIndex = KeGetPDEIndex4K32(Virtual_Address);
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ULONG32 PTEIndex = KeGetPDEIndex4K32(Virtual_Address);
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ULONG32 PTEBase = (*(PULONG32)((ULONG32)PDE_Dir_Address + PDEIndex * 4) >> 12) << 12; // PTE Address
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PVOID Target = (PVOID)((*(PULONG32)(PTEBase + PTEIndex * 4) >> 12) << 12);
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return 0;
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} |