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89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <string>
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#include "common/common_types.h"
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namespace Common {
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struct PageTable;
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}
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namespace Kernel {
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class Process;
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}
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namespace Memory {
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/**
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* Page size used by the ARM architecture. This is the smallest granularity with which memory can
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* be mapped.
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*/
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constexpr std::size_t PAGE_BITS = 12;
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constexpr u64 PAGE_SIZE = 1ULL << PAGE_BITS;
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constexpr u64 PAGE_MASK = PAGE_SIZE - 1;
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/// Virtual user-space memory regions
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enum : VAddr {
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/// TLS (Thread-Local Storage) related.
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TLS_ENTRY_SIZE = 0x200,
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/// Application stack
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DEFAULT_STACK_SIZE = 0x100000,
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/// Kernel Virtual Address Range
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KERNEL_REGION_VADDR = 0xFFFFFF8000000000,
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KERNEL_REGION_SIZE = 0x7FFFE00000,
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KERNEL_REGION_END = KERNEL_REGION_VADDR + KERNEL_REGION_SIZE,
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};
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/// Currently active page table
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void SetCurrentPageTable(Common::PageTable* page_table);
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Common::PageTable* GetCurrentPageTable();
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/// Determines if the given VAddr is valid for the specified process.
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bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);
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bool IsValidVirtualAddress(VAddr vaddr);
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/// Determines if the given VAddr is a kernel address
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bool IsKernelVirtualAddress(VAddr vaddr);
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u8 Read8(VAddr addr);
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u16 Read16(VAddr addr);
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u32 Read32(VAddr addr);
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u64 Read64(VAddr addr);
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void Write8(VAddr addr, u8 data);
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void Write16(VAddr addr, u16 data);
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void Write32(VAddr addr, u32 data);
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void Write64(VAddr addr, u64 data);
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void ReadBlock(const Kernel::Process& process, VAddr src_addr, void* dest_buffer, std::size_t size);
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void ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size);
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void WriteBlock(const Kernel::Process& process, VAddr dest_addr, const void* src_buffer,
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std::size_t size);
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void WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size);
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void ZeroBlock(const Kernel::Process& process, VAddr dest_addr, std::size_t size);
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void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size);
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u8* GetPointer(VAddr vaddr);
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std::string ReadCString(VAddr vaddr, std::size_t max_length);
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enum class FlushMode {
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/// Write back modified surfaces to RAM
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Flush,
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/// Remove region from the cache
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Invalidate,
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/// Write back modified surfaces to RAM, and also remove them from the cache
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FlushAndInvalidate,
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};
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/**
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* Mark each page touching the region as cached.
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*/
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void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached);
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} // namespace Memory
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