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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
namespace Kernel {
/// Permissions for mapped shared memory blocks
enum class MemoryPermission : u32 {
None = 0,
Read = (1u << 0),
Write = (1u << 1),
ReadWrite = (Read | Write),
Execute = (1u << 2),
ReadExecute = (Read | Execute),
WriteExecute = (Write | Execute),
ReadWriteExecute = (Read | Write | Execute),
DontCare = (1u << 28)
};
class SharedMemory : public Object {
public:
/**
* Creates a shared memory object
* @param name Optional object name, used only for debugging purposes.
*/
static ResultVal<SharedPtr<SharedMemory>> Create(std::string name = "Unknown");
std::string GetTypeName() const override { return "SharedMemory"; }
static const HandleType HANDLE_TYPE = HandleType::SharedMemory;
HandleType GetHandleType() const override { return HANDLE_TYPE; }
/**
* Maps a shared memory block to an address in system memory
* @param address Address in system memory to map shared memory block to
* @param permissions Memory block map permissions (specified by SVC field)
* @param other_permissions Memory block map other permissions (specified by SVC field)
*/
ResultCode Map(VAddr address, MemoryPermission permissions, MemoryPermission other_permissions);
/**
* Gets a pointer to the shared memory block
* @param offset Offset from the start of the shared memory block to get pointer
* @return Pointer to the shared memory block from the specified offset
*/
ResultVal<u8*> GetPointer(u32 offset = 0);
VAddr base_address; ///< Address of shared memory block in RAM
MemoryPermission permissions; ///< Permissions of shared memory block (SVC field)
MemoryPermission other_permissions; ///< Other permissions of shared memory block (SVC field)
std::string name; ///< Name of shared memory object (optional)
private:
SharedMemory() = default;
};
} // namespace
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