67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
// SPDX-License-Identifier: MPL-2.0
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// Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
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#pragma once
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#include "KMemory.h"
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namespace skyline::kernel::type {
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/**
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* @brief KPrivateMemory is used to map memory local to the guest process
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*/
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class KPrivateMemory : public KMemory {
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private:
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int fd; //!< A file descriptor to the underlying shared memory
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public:
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u64 address{}; //!< The address of the allocated memory
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size_t size{}; //!< The size of the allocated memory
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/**
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* @param state The state of the device
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* @param address The address to map to (If NULL then an arbitrary address is picked)
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* @param size The size of the allocation
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* @param permission The permissions for the allocated memory
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* @param memState The MemoryState of the chunk of memory
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*/
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KPrivateMemory(const DeviceState &state, u64 address, size_t size, memory::Permission permission, const memory::MemoryState memState);
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/**
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* @brief Remap a chunk of memory as to change the size occupied by it
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* @param size The new size of the memory
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* @return The address the memory was remapped to
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*/
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virtual void Resize(size_t size);
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/**
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* @brief Updates the permissions of a block of mapped memory
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* @param address The starting address to change the permissions at
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* @param size The size of the partition to change the permissions of
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* @param permission The new permissions to be set for the memory
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*/
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virtual void UpdatePermission(const u64 address, const u64 size, memory::Permission permission);
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/**
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* @brief Updates the permissions of a chunk of mapped memory
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* @param permission The new permissions to be set for the memory
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*/
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inline virtual void UpdatePermission(memory::Permission permission) {
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UpdatePermission(address, size, permission);
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}
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/**
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* @brief Checks if the specified address is within the memory object
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* @param address The address to check
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* @return If the address is inside the memory object
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*/
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inline virtual bool IsInside(u64 address) {
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return (this->address <= address) && ((this->address + this->size) > address);
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}
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/**
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* @brief The destructor of private memory, it deallocates the memory
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*/
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~KPrivateMemory();
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};
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}
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