aarch64: fix android build

public/tier0/memvirt.h

@@ -0,0 +1,46 @@
+//========== Copyright (C) Valve Corporation, All rights reserved. ==========//
+//
+// Purpose: CVirtualMemoryManager interface
+//
+//===========================================================================//
+
+#ifndef MEM_VIRT_H
+#define MEM_VIRT_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#define VMM_KB ( 1024 )
+#define VMM_MB ( 1024 * VMM_KB )
+
+#ifdef _PS3
+// Total virtual address space reserved by CVirtualMemoryManager on startup:
+#define VMM_VIRTUAL_SIZE ( 512 * VMM_MB )
+#define VMM_PAGE_SIZE ( 64 * VMM_KB )
+#endif
+
+
+
+// Allocate virtual sections via IMemAlloc::AllocateVirtualMemorySection
+abstract_class IVirtualMemorySection
+{
+public:
+	// Information about memory section
+	virtual void * GetBaseAddress() = 0;
+	virtual size_t GetPageSize() = 0;
+	virtual size_t GetTotalSize() = 0;
+
+	// Functions to manage physical memory mapped to virtual memory
+	virtual bool CommitPages( void *pvBase, size_t numBytes ) = 0;
+	virtual void DecommitPages( void *pvBase, size_t numBytes ) = 0;
+
+	// Release the physical memory and associated virtual address space
+	virtual void Release() = 0;
+};
+
+// Get the IVirtualMemorySection associated with a given memory address (if any):
+extern IVirtualMemorySection *GetMemorySectionForAddress( void *pAddress );
+
+
+#endif // MEM_VIRT_H