mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-11-28 14:26:33 -05:00
abae7577d2
Now that nothing actually touches the internal page table aside from the memory subsystem itself, we can remove the accessor to it.
98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
// Copyright 2014 Citra Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <cstddef>
|
|
#include <string>
|
|
#include "common/common_types.h"
|
|
|
|
namespace Common {
|
|
struct PageTable;
|
|
}
|
|
|
|
namespace Kernel {
|
|
class Process;
|
|
}
|
|
|
|
namespace Memory {
|
|
|
|
/**
|
|
* Page size used by the ARM architecture. This is the smallest granularity with which memory can
|
|
* be mapped.
|
|
*/
|
|
constexpr std::size_t PAGE_BITS = 12;
|
|
constexpr u64 PAGE_SIZE = 1ULL << PAGE_BITS;
|
|
constexpr u64 PAGE_MASK = PAGE_SIZE - 1;
|
|
|
|
/// Virtual user-space memory regions
|
|
enum : VAddr {
|
|
/// Read-only page containing kernel and system configuration values.
|
|
CONFIG_MEMORY_VADDR = 0x1FF80000,
|
|
CONFIG_MEMORY_SIZE = 0x00001000,
|
|
CONFIG_MEMORY_VADDR_END = CONFIG_MEMORY_VADDR + CONFIG_MEMORY_SIZE,
|
|
|
|
/// Usually read-only page containing mostly values read from hardware.
|
|
SHARED_PAGE_VADDR = 0x1FF81000,
|
|
SHARED_PAGE_SIZE = 0x00001000,
|
|
SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE,
|
|
|
|
/// TLS (Thread-Local Storage) related.
|
|
TLS_ENTRY_SIZE = 0x200,
|
|
|
|
/// Application stack
|
|
DEFAULT_STACK_SIZE = 0x100000,
|
|
|
|
/// Kernel Virtual Address Range
|
|
KERNEL_REGION_VADDR = 0xFFFFFF8000000000,
|
|
KERNEL_REGION_SIZE = 0x7FFFE00000,
|
|
KERNEL_REGION_END = KERNEL_REGION_VADDR + KERNEL_REGION_SIZE,
|
|
};
|
|
|
|
/// Changes the currently active page table.
|
|
void SetCurrentPageTable(Common::PageTable* page_table);
|
|
|
|
/// Determines if the given VAddr is valid for the specified process.
|
|
bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);
|
|
bool IsValidVirtualAddress(VAddr vaddr);
|
|
/// Determines if the given VAddr is a kernel address
|
|
bool IsKernelVirtualAddress(VAddr vaddr);
|
|
|
|
u8 Read8(VAddr addr);
|
|
u16 Read16(VAddr addr);
|
|
u32 Read32(VAddr addr);
|
|
u64 Read64(VAddr addr);
|
|
|
|
void Write8(VAddr addr, u8 data);
|
|
void Write16(VAddr addr, u16 data);
|
|
void Write32(VAddr addr, u32 data);
|
|
void Write64(VAddr addr, u64 data);
|
|
|
|
void ReadBlock(const Kernel::Process& process, VAddr src_addr, void* dest_buffer, std::size_t size);
|
|
void ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size);
|
|
void WriteBlock(const Kernel::Process& process, VAddr dest_addr, const void* src_buffer,
|
|
std::size_t size);
|
|
void WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size);
|
|
void ZeroBlock(const Kernel::Process& process, VAddr dest_addr, std::size_t size);
|
|
void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size);
|
|
|
|
u8* GetPointer(VAddr vaddr);
|
|
|
|
std::string ReadCString(VAddr vaddr, std::size_t max_length);
|
|
|
|
enum class FlushMode {
|
|
/// Write back modified surfaces to RAM
|
|
Flush,
|
|
/// Remove region from the cache
|
|
Invalidate,
|
|
/// Write back modified surfaces to RAM, and also remove them from the cache
|
|
FlushAndInvalidate,
|
|
};
|
|
|
|
/**
|
|
* Mark each page touching the region as cached.
|
|
*/
|
|
void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached);
|
|
|
|
} // namespace Memory
|