karina
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
#pragma once
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#include <Types.h>
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#include <VM/PMM.h>
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#include "../Common/bootinfo.h"
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enum VMPTEFlags {
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kPTEValid = (1ULL << 0), // 1 = Present (Will page fault if 0)
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kPTETable = (1ULL << 1), // 1 = Valid for L0/L1/L2 Directory
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kPTEPage = (1ULL << 1), // 1 = Valid for L3 Page (Same bit)
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kPTENormalMem = (0ULL << 2), // Cached, Normal RAM
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kPTEDeviceMem = (1ULL << 2), // Uncached, MMIO Device
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kPTEAccessRW = (0ULL << 6), // Read/Write
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kPTEAccessRO = (1ULL << 6), // Read-Only
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kPTEUser = (1ULL << 7), // 1 = EL0, 0 = EL1
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kPTEInnerShare = (3ULL << 8), // Inner Shareable (SMP safe)
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kPTEAccessFlag = (1ULL << 10), // CPU access tracking (MUST be 1 to avoid faults)
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kPTEPrivNX = (1ULL << 53), // PXN: Privileged Execute Never
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kPTEUserNX = (1ULL << 54) // UXN: Unprivileged Execute Never
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};
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enum {
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kVMKernelVMA = 0xFFFFFFFF80000000,
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kHHDMOffset = 0xFFFF888000000000,
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kVMFbVirtBase = 0xFFFFFFFFFC000000,
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};
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static inline Address VMKernelVirtToPhys(Address virt) {
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return virt - 0xFFFFFFFF80100000 + 0x40100000; // TODO: hardcode is awful
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}
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static inline Address VMPhysToHHDM(Address phys) {
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return phys + kHHDMOffset;
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}
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static inline Address VMHHDMToPhys(Address virt) {
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return virt - kHHDMOffset;
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}
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extern Address* gVMKernelL0Table;
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extern Address gVMKernelL0Physical;
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Address* VMMMapPage(Address* l0Table, Address phys, Address virt, UInt64 flags);
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void VMMUnmapPage(Address* l0Table, Address virt);
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Pointer VMMGetOrAllocatePage(Address* l0Table, Address virt, UInt64 flags);
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void VMMInitialize(VMBootMemoryMap* bootMap, Bootinfo* info);
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