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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <map>
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/hle/config_mem.h"
#include "core/hle/shared_page.h"
#include "core/mem_map.h"
#include "core/memory.h"
#include "core/memory_setup.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
namespace Memory {
u8* g_exefs_code; ///< ExeFS:/.code is loaded here
u8* g_heap; ///< Application heap (main memory)
u8* g_shared_mem; ///< Shared memory
u8* g_heap_linear; ///< Linear heap
u8* g_vram; ///< Video memory (VRAM) pointer
u8* g_dsp_mem; ///< DSP memory
u8* g_tls_mem; ///< TLS memory
namespace {
struct MemoryArea {
u8** ptr;
u32 base;
u32 size;
};
// We don't declare the IO regions in here since its handled by other means.
static MemoryArea memory_areas[] = {
{&g_exefs_code, PROCESS_IMAGE_VADDR, PROCESS_IMAGE_MAX_SIZE},
{&g_heap, HEAP_VADDR, HEAP_SIZE },
{&g_shared_mem, SHARED_MEMORY_VADDR, SHARED_MEMORY_SIZE },
{&g_heap_linear, LINEAR_HEAP_VADDR, LINEAR_HEAP_SIZE },
{&g_vram, VRAM_VADDR, VRAM_SIZE },
{&g_dsp_mem, DSP_RAM_VADDR, DSP_RAM_SIZE },
{&g_tls_mem, TLS_AREA_VADDR, TLS_AREA_SIZE },
};
/// Represents a block of memory mapped by ControlMemory/MapMemoryBlock
struct MemoryBlock {
MemoryBlock() : handle(0), base_address(0), address(0), size(0), operation(0), permissions(0) {
}
u32 handle;
u32 base_address;
u32 address;
u32 size;
u32 operation;
u32 permissions;
const u32 GetVirtualAddress() const{
return base_address + address;
}
};
static std::map<u32, MemoryBlock> heap_map;
static std::map<u32, MemoryBlock> heap_linear_map;
}
u32 MapBlock_Heap(u32 size, u32 operation, u32 permissions) {
MemoryBlock block;
block.base_address = HEAP_VADDR;
block.size = size;
block.operation = operation;
block.permissions = permissions;
if (heap_map.size() > 0) {
const MemoryBlock last_block = heap_map.rbegin()->second;
block.address = last_block.address + last_block.size;
}
heap_map[block.GetVirtualAddress()] = block;
return block.GetVirtualAddress();
}
u32 MapBlock_HeapLinear(u32 size, u32 operation, u32 permissions) {
MemoryBlock block;
block.base_address = LINEAR_HEAP_VADDR;
block.size = size;
block.operation = operation;
block.permissions = permissions;
if (heap_linear_map.size() > 0) {
const MemoryBlock last_block = heap_linear_map.rbegin()->second;
block.address = last_block.address + last_block.size;
}
heap_linear_map[block.GetVirtualAddress()] = block;
return block.GetVirtualAddress();
}
PAddr VirtualToPhysicalAddress(const VAddr addr) {
if (addr == 0) {
return 0;
} else if (addr >= VRAM_VADDR && addr < VRAM_VADDR_END) {
return addr - VRAM_VADDR + VRAM_PADDR;
} else if (addr >= LINEAR_HEAP_VADDR && addr < LINEAR_HEAP_VADDR_END) {
return addr - LINEAR_HEAP_VADDR + FCRAM_PADDR;
} else if (addr >= DSP_RAM_VADDR && addr < DSP_RAM_VADDR_END) {
return addr - DSP_RAM_VADDR + DSP_RAM_PADDR;
} else if (addr >= IO_AREA_VADDR && addr < IO_AREA_VADDR_END) {
return addr - IO_AREA_VADDR + IO_AREA_PADDR;
}
LOG_ERROR(HW_Memory, "Unknown virtual address @ 0x%08x", addr);
// To help with debugging, set bit on address so that it's obviously invalid.
return addr | 0x80000000;
}
VAddr PhysicalToVirtualAddress(const PAddr addr) {
if (addr == 0) {
return 0;
} else if (addr >= VRAM_PADDR && addr < VRAM_PADDR_END) {
return addr - VRAM_PADDR + VRAM_VADDR;
} else if (addr >= FCRAM_PADDR && addr < FCRAM_PADDR_END) {
return addr - FCRAM_PADDR + LINEAR_HEAP_VADDR;
} else if (addr >= DSP_RAM_PADDR && addr < DSP_RAM_PADDR_END) {
return addr - DSP_RAM_PADDR + DSP_RAM_VADDR;
} else if (addr >= IO_AREA_PADDR && addr < IO_AREA_PADDR_END) {
return addr - IO_AREA_PADDR + IO_AREA_VADDR;
}
LOG_ERROR(HW_Memory, "Unknown physical address @ 0x%08x", addr);
// To help with debugging, set bit on address so that it's obviously invalid.
return addr | 0x80000000;
}
void Init() {
InitMemoryMap();
for (MemoryArea& area : memory_areas) {
*area.ptr = new u8[area.size];
MapMemoryRegion(area.base, area.size, *area.ptr);
}
MapMemoryRegion(CONFIG_MEMORY_VADDR, CONFIG_MEMORY_SIZE, (u8*)&ConfigMem::config_mem);
MapMemoryRegion(SHARED_PAGE_VADDR, SHARED_PAGE_SIZE, (u8*)&SharedPage::shared_page);
LOG_DEBUG(HW_Memory, "initialized OK, RAM at %p", g_heap);
}
void Shutdown() {
heap_map.clear();
heap_linear_map.clear();
for (MemoryArea& area : memory_areas) {
delete[] *area.ptr;
*area.ptr = nullptr;
}
LOG_DEBUG(HW_Memory, "shutdown OK");
}
} // namespace
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