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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#ifdef _WIN32
#include <windows.h>
#endif
#include "common/assert.h"
#include "core/core.h"
#include "core/device_memory.h"
#include "core/memory.h"
namespace Core {
constexpr u64 DramSize{4ULL * 1024 * 1024 * 1024};
DeviceMemory::DeviceMemory(System& system) : system{system} {
#ifdef _WIN32
base = static_cast<u8*>(
VirtualAlloc(nullptr, // System selects address
DramSize, // Size of allocation
MEM_RESERVE | MEM_COMMIT | MEM_WRITE_WATCH, // Allocate reserved pages
PAGE_READWRITE)); // Protection = no access
#else
physical_memory.resize(DramSize);
base = physical_memory.data();
#endif
}
DeviceMemory::~DeviceMemory() {
#ifdef _WIN32
ASSERT(VirtualFree(base, DramSize, MEM_RELEASE));
#endif
}
PAddr DeviceMemory::GetPhysicalAddr(VAddr addr) {
u8* pointer{system.Memory().GetPointer(addr)};
ASSERT(pointer);
const uintptr_t offset{static_cast<uintptr_t>(pointer - GetPointer(DramMemoryMap::Base))};
return DramMemoryMap::Base + offset;
}
u8* DeviceMemory::GetPointer(PAddr addr) {
ASSERT(addr >= DramMemoryMap::Base);
ASSERT(addr < DramMemoryMap::Base + DramSize);
return base + (addr - DramMemoryMap::Base);
}
} // namespace Core
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