257 lines
7.9 KiB
C++
257 lines
7.9 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <map>
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#include "common/common.h"
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#include "core/mem_map.h"
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#include "core/hw/hw.h"
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#include "hle/hle.h"
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namespace Memory {
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std::map<u32, MemoryBlock> g_heap_map;
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std::map<u32, MemoryBlock> g_heap_gsp_map;
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std::map<u32, MemoryBlock> g_shared_map;
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/// Convert a physical address to virtual address
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u32 _AddressPhysicalToVirtual(const u32 addr) {
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// Our memory interface read/write functions assume virtual addresses. Put any physical address
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// to virtual address translations here. This is obviously quite hacky... But we're not doing
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// any MMU emulation yet or anything
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if ((addr >= FCRAM_PADDR) && (addr < (FCRAM_PADDR_END))) {
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return (addr & FCRAM_MASK) | FCRAM_VADDR;
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}
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return addr;
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}
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template <typename T>
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inline void _Read(T &var, const u32 addr) {
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// TODO: Figure out the fastest order of tests for both read and write (they are probably different).
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// TODO: Make sure this represents the mirrors in a correct way.
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// Could just do a base-relative read, too.... TODO
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const u32 vaddr = _AddressPhysicalToVirtual(addr);
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// Memory allocated for HLE use that can be addressed from the emulated application
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// The primary use of this is sharing a commandbuffer between the HLE OS (syscore) and the LLE
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// core running the user application (appcore)
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if (vaddr >= HLE::CMD_BUFFER_ADDR && vaddr < HLE::CMD_BUFFER_ADDR_END) {
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HLE::Read<T>(var, vaddr);
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// Hardware I/O register reads
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// 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space
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} else if ((vaddr >= HARDWARE_IO_VADDR) && (vaddr < HARDWARE_IO_VADDR_END)) {
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HW::Read<T>(var, vaddr);
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// FCRAM - GSP heap
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} else if ((vaddr >= HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
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var = *((const T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK]);
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// FCRAM - application heap
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} else if ((vaddr >= HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
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var = *((const T*)&g_heap[vaddr & HEAP_MASK]);
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// Shared memory
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} else if ((vaddr >= SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
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var = *((const T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK]);
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// VRAM
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} else if ((vaddr >= VRAM_VADDR) && (vaddr < VRAM_VADDR_END)) {
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var = *((const T*)&g_vram[vaddr & VRAM_MASK]);
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} else {
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//_assert_msg_(MEMMAP, false, "unknown Read%d @ 0x%08X", sizeof(var) * 8, vaddr);
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}
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}
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template <typename T>
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inline void _Write(u32 addr, const T data) {
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u32 vaddr = _AddressPhysicalToVirtual(addr);
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// Memory allocated for HLE use that can be addressed from the emulated application
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// The primary use of this is sharing a commandbuffer between the HLE OS (syscore) and the LLE
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// core running the user application (appcore)
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if (vaddr >= HLE::CMD_BUFFER_ADDR && vaddr < HLE::CMD_BUFFER_ADDR_END) {
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HLE::Write<T>(vaddr, data);
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// Hardware I/O register writes
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// 0x10XXXXXX- is physical address space, 0x1EXXXXXX is virtual address space
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} else if ((vaddr >= HARDWARE_IO_VADDR) && (vaddr < HARDWARE_IO_VADDR_END)) {
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HW::Write<T>(vaddr, data);
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// FCRAM - GSP heap
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} else if ((vaddr >= HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
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*(T*)&g_heap_gsp[vaddr & HEAP_GSP_MASK] = data;
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// FCRAM - application heap
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} else if ((vaddr >= HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
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*(T*)&g_heap[vaddr & HEAP_MASK] = data;
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// Shared memory
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} else if ((vaddr >= SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
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*(T*)&g_shared_mem[vaddr & SHARED_MEMORY_MASK] = data;
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// VRAM
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} else if ((vaddr >= VRAM_VADDR) && (vaddr < VRAM_VADDR_END)) {
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*(T*)&g_vram[vaddr & VRAM_MASK] = data;
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} else if ((vaddr & 0xFFF00000) == 0x1FF00000) {
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_assert_msg_(MEMMAP, false, "umimplemented write to DSP memory");
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} else if ((vaddr & 0xFFFF0000) == 0x1FF80000) {
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_assert_msg_(MEMMAP, false, "umimplemented write to Configuration Memory");
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} else if ((vaddr & 0xFFFFF000) == 0x1FF81000) {
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_assert_msg_(MEMMAP, false, "umimplemented write to shared page");
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// Error out...
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} else {
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_assert_msg_(MEMMAP, false, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8,
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data, vaddr);
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}
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}
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u8 *GetPointer(const u32 addr) {
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const u32 vaddr = _AddressPhysicalToVirtual(addr);
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// FCRAM - GSP heap
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if ((vaddr >= HEAP_GSP_VADDR) && (vaddr < HEAP_GSP_VADDR_END)) {
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return g_heap_gsp + (vaddr & HEAP_GSP_MASK);
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// FCRAM - application heap
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} else if ((vaddr >= HEAP_VADDR) && (vaddr < HEAP_VADDR_END)) {
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return g_heap + (vaddr & HEAP_MASK);
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// Shared memory
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} else if ((vaddr > SHARED_MEMORY_VADDR) && (vaddr < SHARED_MEMORY_VADDR_END)) {
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return g_shared_mem + (vaddr & SHARED_MEMORY_MASK);
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// VRAM
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} else if ((vaddr > VRAM_VADDR) && (vaddr < VRAM_VADDR_END)) {
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return g_vram + (vaddr & VRAM_MASK);
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} else {
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ERROR_LOG(MEMMAP, "Unknown GetPointer @ 0x%08x", vaddr);
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return 0;
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}
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}
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/**
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* Maps a block of memory in shared memory
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* @param handle Handle to map memory block for
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* @param addr Address to map memory block to
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* @param permissions Memory map permissions
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*/
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u32 MapBlock_Shared(u32 handle, u32 addr,u32 permissions) {
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MemoryBlock block;
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block.handle = handle;
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block.base_address = addr;
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block.permissions = permissions;
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if (g_shared_map.size() > 0) {
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const MemoryBlock last_block = g_shared_map.rbegin()->second;
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block.address = last_block.address + last_block.size;
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}
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g_shared_map[block.GetVirtualAddress()] = block;
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return block.GetVirtualAddress();
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}
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/**
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* Maps a block of memory on the heap
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* @param size Size of block in bytes
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* @param operation Memory map operation type
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* @param flags Memory allocation flags
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*/
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u32 MapBlock_Heap(u32 size, u32 operation, u32 permissions) {
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MemoryBlock block;
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block.base_address = HEAP_VADDR;
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block.size = size;
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block.operation = operation;
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block.permissions = permissions;
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if (g_heap_map.size() > 0) {
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const MemoryBlock last_block = g_heap_map.rbegin()->second;
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block.address = last_block.address + last_block.size;
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}
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g_heap_map[block.GetVirtualAddress()] = block;
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return block.GetVirtualAddress();
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}
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/**
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* Maps a block of memory on the GSP heap
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* @param size Size of block in bytes
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* @param operation Memory map operation type
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* @param flags Memory allocation flags
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*/
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u32 MapBlock_HeapGSP(u32 size, u32 operation, u32 permissions) {
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MemoryBlock block;
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block.base_address = HEAP_GSP_VADDR;
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block.size = size;
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block.operation = operation;
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block.permissions = permissions;
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if (g_heap_gsp_map.size() > 0) {
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const MemoryBlock last_block = g_heap_gsp_map.rbegin()->second;
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block.address = last_block.address + last_block.size;
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}
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g_heap_gsp_map[block.GetVirtualAddress()] = block;
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return block.GetVirtualAddress();
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}
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u8 Read8(const u32 addr) {
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u8 _var = 0;
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_Read<u8>(_var, addr);
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return (u8)_var;
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}
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u16 Read16(const u32 addr) {
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u16_le _var = 0;
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_Read<u16_le>(_var, addr);
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return (u16)_var;
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}
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u32 Read32(const u32 addr) {
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u32_le _var = 0;
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_Read<u32_le>(_var, addr);
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return _var;
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}
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u64 Read64(const u32 addr) {
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u64_le _var = 0;
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_Read<u64_le>(_var, addr);
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return _var;
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}
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u32 Read8_ZX(const u32 addr) {
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return (u32)Read8(addr);
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}
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u32 Read16_ZX(const u32 addr) {
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return (u32)Read16(addr);
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}
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void Write8(const u32 addr, const u8 data) {
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_Write<u8>(addr, data);
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}
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void Write16(const u32 addr, const u16 data) {
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_Write<u16_le>(addr, data);
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}
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void Write32(const u32 addr, const u32 data) {
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_Write<u32_le>(addr, data);
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}
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void Write64(const u32 addr, const u64 data) {
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_Write<u64_le>(addr, data);
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}
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} // namespace
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