// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <string>
#include "common/common_types.h"
namespace Memory {
/**
* Page size used by the ARM architecture. This is the smallest granularity with which memory can
* be mapped.
*/
const u32 PAGE_SIZE = 0x1000;
const u32 PAGE_MASK = PAGE_SIZE - 1;
const int PAGE_BITS = 12;
const size_t PAGE_TABLE_NUM_ENTRIES = 1 << (32 - PAGE_BITS);
/// Physical memory regions as seen from the ARM11
enum : PAddr {
/// IO register area
IO_AREA_PADDR = 0x10100000,
IO_AREA_SIZE = 0x01000000, ///< IO area size (16MB)
IO_AREA_PADDR_END = IO_AREA_PADDR + IO_AREA_SIZE,
/// MPCore internal memory region
MPCORE_RAM_PADDR = 0x17E00000,
MPCORE_RAM_SIZE = 0x00002000, ///< MPCore internal memory size (8KB)
MPCORE_RAM_PADDR_END = MPCORE_RAM_PADDR + MPCORE_RAM_SIZE,
/// Video memory
VRAM_PADDR = 0x18000000,
VRAM_SIZE = 0x00600000, ///< VRAM size (6MB)
VRAM_PADDR_END = VRAM_PADDR + VRAM_SIZE,
/// New 3DS additional memory. Supposedly faster than regular FCRAM. Part of it can be used by
/// applications and system modules if mapped via the ExHeader.
N3DS_EXTRA_RAM_PADDR = 0x1F000000,
N3DS_EXTRA_RAM_SIZE = 0x00400000, ///< New 3DS additional memory size (4MB)
N3DS_EXTRA_RAM_PADDR_END = N3DS_EXTRA_RAM_PADDR + N3DS_EXTRA_RAM_SIZE,
/// DSP memory
DSP_RAM_PADDR = 0x1FF00000,
DSP_RAM_SIZE = 0x00080000, ///< DSP memory size (512KB)
DSP_RAM_PADDR_END = DSP_RAM_PADDR + DSP_RAM_SIZE,
/// AXI WRAM
AXI_WRAM_PADDR = 0x1FF80000,
AXI_WRAM_SIZE = 0x00080000, ///< AXI WRAM size (512KB)
AXI_WRAM_PADDR_END = AXI_WRAM_PADDR + AXI_WRAM_SIZE,
/// Main FCRAM
FCRAM_PADDR = 0x20000000,
FCRAM_SIZE = 0x08000000, ///< FCRAM size on the Old 3DS (128MB)
FCRAM_N3DS_SIZE = 0x10000000, ///< FCRAM size on the New 3DS (256MB)
FCRAM_PADDR_END = FCRAM_PADDR + FCRAM_SIZE,
FCRAM_N3DS_PADDR_END = FCRAM_PADDR + FCRAM_N3DS_SIZE,
};
/// Virtual user-space memory regions
enum : VAddr {
/// Where the application text, data and bss reside.
PROCESS_IMAGE_VADDR = 0x00100000,
PROCESS_IMAGE_MAX_SIZE = 0x03F00000,
PROCESS_IMAGE_VADDR_END = PROCESS_IMAGE_VADDR + PROCESS_IMAGE_MAX_SIZE,
/// Area where IPC buffers are mapped onto.
IPC_MAPPING_VADDR = 0x04000000,
IPC_MAPPING_SIZE = 0x04000000,
IPC_MAPPING_VADDR_END = IPC_MAPPING_VADDR + IPC_MAPPING_SIZE,
/// Application heap (includes stack).
HEAP_VADDR = 0x08000000,
HEAP_SIZE = 0x08000000,
HEAP_VADDR_END = HEAP_VADDR + HEAP_SIZE,
/// Area where shared memory buffers are mapped onto.
SHARED_MEMORY_VADDR = 0x10000000,
SHARED_MEMORY_SIZE = 0x04000000,
SHARED_MEMORY_VADDR_END = SHARED_MEMORY_VADDR + SHARED_MEMORY_SIZE,
/// Maps 1:1 to an offset in FCRAM. Used for HW allocations that need to be linear in physical
/// memory.
LINEAR_HEAP_VADDR = 0x14000000,
LINEAR_HEAP_SIZE = 0x08000000,
LINEAR_HEAP_VADDR_END = LINEAR_HEAP_VADDR + LINEAR_HEAP_SIZE,
/// Maps 1:1 to New 3DS additional memory
N3DS_EXTRA_RAM_VADDR = 0x1E800000,
N3DS_EXTRA_RAM_VADDR_END = N3DS_EXTRA_RAM_VADDR + N3DS_EXTRA_RAM_SIZE,
/// Maps 1:1 to the IO register area.
IO_AREA_VADDR = 0x1EC00000,
IO_AREA_VADDR_END = IO_AREA_VADDR + IO_AREA_SIZE,
/// Maps 1:1 to VRAM.
VRAM_VADDR = 0x1F000000,
VRAM_VADDR_END = VRAM_VADDR + VRAM_SIZE,
/// Maps 1:1 to DSP memory.
DSP_RAM_VADDR = 0x1FF00000,
DSP_RAM_VADDR_END = DSP_RAM_VADDR + DSP_RAM_SIZE,
/// 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,
/// Area where TLS (Thread-Local Storage) buffers are allocated.
TLS_AREA_VADDR = 0x1FF82000,
TLS_ENTRY_SIZE = 0x200,
/// Equivalent to LINEAR_HEAP_VADDR, but expanded to cover the extra memory in the New 3DS.
NEW_LINEAR_HEAP_VADDR = 0x30000000,
NEW_LINEAR_HEAP_SIZE = 0x10000000,
NEW_LINEAR_HEAP_VADDR_END = NEW_LINEAR_HEAP_VADDR + NEW_LINEAR_HEAP_SIZE,
};
bool IsValidVirtualAddress(const VAddr addr);
bool IsValidPhysicalAddress(const PAddr addr);
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 VAddr src_addr, void* dest_buffer, size_t size);
void WriteBlock(const VAddr dest_addr, const void* src_buffer, size_t size);
void ZeroBlock(const VAddr dest_addr, const size_t size);
void CopyBlock(VAddr dest_addr, VAddr src_addr, size_t size);
u8* GetPointer(VAddr virtual_address);
std::string ReadCString(VAddr virtual_address, std::size_t max_length);
/**
* Converts a virtual address inside a region with 1:1 mapping to physical memory to a physical
* address. This should be used by services to translate addresses for use by the hardware.
*/
PAddr VirtualToPhysicalAddress(VAddr addr);
/**
* Undoes a mapping performed by VirtualToPhysicalAddress().
*/
VAddr PhysicalToVirtualAddress(PAddr addr);
/**
* Gets a pointer to the memory region beginning at the specified physical address.
*
* @note This is currently implemented using PhysicalToVirtualAddress().
*/
u8* GetPhysicalPointer(PAddr address);
/**
* Adds the supplied value to the rasterizer resource cache counter of each
* page touching the region.
*/
void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta);
/**
* Flushes any externally cached rasterizer resources touching the given region.
*/
void RasterizerFlushRegion(PAddr start, u32 size);
/**
* Flushes and invalidates any externally cached rasterizer resources touching the given region.
*/
void RasterizerFlushAndInvalidateRegion(PAddr start, u32 size);
/**
* Dynarmic has an optimization to memory accesses when the pointer to the page exists that
* can be used by setting up the current page table as a callback. This function is used to
* retrieve the current page table for that purpose.
*/
std::array<u8*, PAGE_TABLE_NUM_ENTRIES>* GetCurrentPageTablePointers();
}
