yuzu/src/core/hardware_properties.h

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// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
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#include <tuple>
#include "common/bit_util.h"
#include "common/common_types.h"
namespace Core {
namespace Hardware {
// The below clock rate is based on Switch's clockspeed being widely known as 1.020GHz
// The exact value used is of course unverified.
constexpr u64 BASE_CLOCK_RATE = 1019215872; // Switch cpu frequency is 1020MHz un/docked
constexpr u64 CNTFREQ = 19200000; // Switch's hardware clock speed
constexpr u32 NUM_CPU_CORES = 4; // Number of CPU Cores
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// Virtual to Physical core map.
constexpr std::array<s32, Common::BitSize<u64>()> VirtualToPhysicalCoreMap{
0, 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3,
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};
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static constexpr inline size_t NumVirtualCores = Common::BitSize<u64>();
static constexpr inline u64 VirtualCoreMask = [] {
u64 mask = 0;
for (size_t i = 0; i < NumVirtualCores; ++i) {
mask |= (UINT64_C(1) << i);
}
return mask;
}();
static constexpr inline u64 ConvertVirtualCoreMaskToPhysical(u64 v_core_mask) {
u64 p_core_mask = 0;
while (v_core_mask != 0) {
const u64 next = std::countr_zero(v_core_mask);
v_core_mask &= ~(static_cast<u64>(1) << next);
p_core_mask |= (static_cast<u64>(1) << VirtualToPhysicalCoreMap[next]);
}
return p_core_mask;
}
// Cortex-A57 supports 4 memory watchpoints
constexpr u64 NUM_WATCHPOINTS = 4;
} // namespace Hardware
} // namespace Core