/// <summary>
/// Creates a new instance of the host mapped memory manager.
/// </summary>
/// <param name="backingMemory">Physical backing memory where virtual memory will be mapped to</param>
/// <param name="addressSpaceSize">Size of the address space</param>
/// <param name="unsafeMode">True if unmanaged access should not be masked (unsafe), false otherwise.</param>
/// <param name="invalidAccessHandler">Optional function to handle invalid memory accesses</param>
public MemoryManagerHostMapped(MemoryBlock backingMemory, ulong addressSpaceSize, bool unsafeMode, InvalidAccessHandler invalidAccessHandler = null)
{
_backingMemory = backingMemory;
_pageTable = new PageTable <ulong>();
_invalidAccessHandler = invalidAccessHandler;
_unsafeMode = unsafeMode;
_addressSpaceSize = addressSpaceSize;
ulong asSize = PageSize;
int asBits = PageBits;
while (asSize < addressSpaceSize)
{
asSize <<= 1;
asBits++;
}
AddressSpaceBits = asBits;
_pageBitmap = new ulong[1 << (AddressSpaceBits - (PageBits + PageToPteShift))];
MemoryAllocationFlags asFlags = MemoryAllocationFlags.Reserve | MemoryAllocationFlags.ViewCompatible;
_addressSpace = new MemoryBlock(asSize, asFlags);
_addressSpaceMirror = new MemoryBlock(asSize, asFlags | MemoryAllocationFlags.ForceWindows4KBViewMapping);
Tracking = new MemoryTracking(this, PageSize, invalidAccessHandler);
_memoryEh = new MemoryEhMeilleure(_addressSpace, Tracking);
}
private (MemoryBlock virt, MemoryBlock mirror, MemoryEhMeilleure exceptionHandler) GetVirtual(ulong asSize)
{
MemoryAllocationFlags asFlags = MemoryAllocationFlags.Reserve | MemoryAllocationFlags.ViewCompatible;
var addressSpace = new MemoryBlock(asSize, asFlags);
var addressSpaceMirror = new MemoryBlock(asSize, asFlags);
var tracking = new MemoryTracking(new MockVirtualMemoryManager(asSize, 0x1000), 0x1000);
var exceptionHandler = new MemoryEhMeilleure(addressSpace, addressSpaceMirror, tracking);
return(addressSpace, addressSpaceMirror, exceptionHandler);
}
