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125 lines
3.6 KiB
C++
125 lines
3.6 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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#include <map>
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#include <memory>
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#include <utility>
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#include <vector>
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "core/hle/config_mem.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/hle/result.h"
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#include "core/hle/shared_page.h"
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#include "core/memory.h"
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#include "core/memory_setup.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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namespace Memory {
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namespace {
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struct MemoryArea {
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u32 base;
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u32 size;
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const char* name;
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};
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// We don't declare the IO regions in here since its handled by other means.
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static MemoryArea memory_areas[] = {
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{SHARED_MEMORY_VADDR, SHARED_MEMORY_SIZE, "Shared Memory"}, // Shared memory
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{VRAM_VADDR, VRAM_SIZE, "VRAM"}, // Video memory (VRAM)
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{DSP_RAM_VADDR, DSP_RAM_SIZE, "DSP RAM"}, // DSP memory
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{TLS_AREA_VADDR, TLS_AREA_SIZE, "TLS Area"}, // TLS memory
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};
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/// Represents a block of memory mapped by ControlMemory/MapMemoryBlock
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struct MemoryBlock {
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MemoryBlock() : handle(0), base_address(0), address(0), size(0), operation(0), permissions(0) {
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}
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u32 handle;
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u32 base_address;
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u32 address;
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u32 size;
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u32 operation;
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u32 permissions;
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const u32 GetVirtualAddress() const{
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return base_address + address;
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}
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};
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static std::map<u32, MemoryBlock> heap_map;
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static std::map<u32, MemoryBlock> heap_linear_map;
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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 (heap_map.size() > 0) {
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const MemoryBlock last_block = heap_map.rbegin()->second;
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block.address = last_block.address + last_block.size;
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}
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heap_map[block.GetVirtualAddress()] = block;
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return block.GetVirtualAddress();
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}
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u32 MapBlock_HeapLinear(u32 size, u32 operation, u32 permissions) {
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MemoryBlock block;
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block.base_address = LINEAR_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 (heap_linear_map.size() > 0) {
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const MemoryBlock last_block = heap_linear_map.rbegin()->second;
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block.address = last_block.address + last_block.size;
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}
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heap_linear_map[block.GetVirtualAddress()] = block;
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return block.GetVirtualAddress();
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}
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void Init() {
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InitMemoryMap();
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LOG_DEBUG(HW_Memory, "initialized OK");
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}
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void InitLegacyAddressSpace(Kernel::VMManager& address_space) {
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using namespace Kernel;
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for (MemoryArea& area : memory_areas) {
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auto block = std::make_shared<std::vector<u8>>(area.size);
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address_space.MapMemoryBlock(area.base, std::move(block), 0, area.size, MemoryState::Private).Unwrap();
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}
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auto cfg_mem_vma = address_space.MapBackingMemory(CONFIG_MEMORY_VADDR,
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(u8*)&ConfigMem::config_mem, CONFIG_MEMORY_SIZE, MemoryState::Shared).MoveFrom();
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address_space.Reprotect(cfg_mem_vma, VMAPermission::Read);
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auto shared_page_vma = address_space.MapBackingMemory(SHARED_PAGE_VADDR,
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(u8*)&SharedPage::shared_page, SHARED_PAGE_SIZE, MemoryState::Shared).MoveFrom();
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address_space.Reprotect(shared_page_vma, VMAPermission::Read);
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}
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void Shutdown() {
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heap_map.clear();
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heap_linear_map.clear();
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LOG_DEBUG(HW_Memory, "shutdown OK");
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}
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} // namespace
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