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// Copyright 2021 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <functional>
#include <bit>
#include "Common/Arm64Emitter.h"
#include "Common/CommonTypes.h"
#include "Common/FPURoundMode.h"
#include "Common/ScopeGuard.h"
#include "Core/Core.h"
#include "Core/PowerPC/Interpreter/Interpreter_FPUtils.h"
#include "Core/PowerPC/JitArm64/Jit.h"
#include "Core/System.h"
#include "../TestValues.h"
#include <fmt/format.h>
#include <gtest/gtest.h>
namespace
{
using namespace Arm64Gen;
// The ABI situation for returning an std::tuple seems annoying. Let's use this struct instead
template <typename T>
struct Pair
{
T value1;
T value2;
};
class TestConversion : private JitArm64
{
public:
explicit TestConversion(Core::System& system) : JitArm64(system)
{
const Common::ScopedJITPageWriteAndNoExecute enable_jit_page_writes;
AllocCodeSpace(4096);
AddChildCodeSpace(&m_far_code, 2048);
gpr.Init(this);
fpr.Init(this);
js.fpr_is_store_safe = BitSet32(0);
GetAsmRoutines()->cdts = GetCodePtr();
GenerateConvertDoubleToSingle();
GetAsmRoutines()->cstd = GetCodePtr();
GenerateConvertSingleToDouble();
gpr.Lock(ARM64Reg::W30);
fpr.Lock(ARM64Reg::Q0, ARM64Reg::Q1);
convert_single_to_double_lower = std::bit_cast<u64 (*)(u32)>(GetCodePtr());
m_float_emit.INS(32, ARM64Reg::S0, 0, ARM64Reg::W0);
ConvertSingleToDoubleLower(0, ARM64Reg::D0, ARM64Reg::S0, ARM64Reg::Q1);
m_float_emit.UMOV(64, ARM64Reg::X0, ARM64Reg::D0, 0);
RET();
convert_single_to_double_pair = std::bit_cast<Pair<u64> (*)(u32, u32)>(GetCodePtr());
m_float_emit.INS(32, ARM64Reg::D0, 0, ARM64Reg::W0);
m_float_emit.INS(32, ARM64Reg::D0, 1, ARM64Reg::W1);
ConvertSingleToDoublePair(0, ARM64Reg::Q0, ARM64Reg::D0, ARM64Reg::Q1);
m_float_emit.UMOV(64, ARM64Reg::X0, ARM64Reg::Q0, 0);
m_float_emit.UMOV(64, ARM64Reg::X1, ARM64Reg::Q0, 1);
RET();
convert_double_to_single_lower = std::bit_cast<u32 (*)(u64)>(GetCodePtr());
m_float_emit.INS(64, ARM64Reg::D0, 0, ARM64Reg::X0);
ConvertDoubleToSingleLower(0, ARM64Reg::S0, ARM64Reg::D0);
m_float_emit.UMOV(32, ARM64Reg::W0, ARM64Reg::S0, 0);
RET();
convert_double_to_single_pair = std::bit_cast<Pair<u32> (*)(u64, u64)>(GetCodePtr());
m_float_emit.INS(64, ARM64Reg::Q0, 0, ARM64Reg::X0);
m_float_emit.INS(64, ARM64Reg::Q0, 1, ARM64Reg::X1);
ConvertDoubleToSinglePair(0, ARM64Reg::D0, ARM64Reg::Q0);
m_float_emit.UMOV(64, ARM64Reg::X0, ARM64Reg::D0, 0);
RET();
gpr.Unlock(ARM64Reg::W30);
fpr.Unlock(ARM64Reg::Q0, ARM64Reg::Q1);
FlushIcache();
// Set the rounding mode to something that's as annoying as possible to handle
// (flush-to-zero enabled, and rounding not symmetric about the origin)
Common::FPU::SetSIMDMode(Common::FPU::RoundMode::ROUND_UP, true);
}
~TestConversion() override
{
Common::FPU::LoadDefaultSIMDState();
FreeCodeSpace();
}
u64 ConvertSingleToDouble(const u32 value) const { return convert_single_to_double_lower(value); }
Pair<u64> ConvertSingleToDouble(const u32 value1, const u32 value2) const
{
return convert_single_to_double_pair(value1, value2);
}
u32 ConvertDoubleToSingle(const u64 value) const { return convert_double_to_single_lower(value); }
Pair<u32> ConvertDoubleToSingle(const u64 value1, const u64 value2) const
{
return convert_double_to_single_pair(value1, value2);
}
private:
std::function<u64(u32)> convert_single_to_double_lower;
std::function<Pair<u64>(u32, u32)> convert_single_to_double_pair;
std::function<u32(u64)> convert_double_to_single_lower;
std::function<Pair<u32>(u64, u64)> convert_double_to_single_pair;
};
} // namespace
TEST(JitArm64, ConvertDoubleToSingle)
{
Core::DeclareAsCPUThread();
Common::ScopeGuard cpu_thread_guard([] { Core::UndeclareAsCPUThread(); });
TestConversion test(Core::System::GetInstance());
for (const u64 input : double_test_values)
{
const u32 expected = ConvertToSingle(input);
const u32 actual = test.ConvertDoubleToSingle(input);
if (expected != actual)
fmt::print("{:016x} -> {:08x} == {:08x}\n", input, actual, expected);
EXPECT_EQ(expected, actual);
}
for (const u64 input1 : double_test_values)
{
for (const u64 input2 : double_test_values)
{
const u32 expected1 = ConvertToSingle(input1);
const u32 expected2 = ConvertToSingle(input2);
const auto [actual1, actual2] = test.ConvertDoubleToSingle(input1, input2);
if (expected1 != actual1 || expected2 != actual2)
{
fmt::print("{:016x} -> {:08x} == {:08x},\n", input1, actual1, expected1);
fmt::print("{:016x} -> {:08x} == {:08x}\n", input2, actual2, expected2);
}
EXPECT_EQ(expected1, actual1);
EXPECT_EQ(expected2, actual2);
}
}
}
TEST(JitArm64, ConvertSingleToDouble)
{
Core::DeclareAsCPUThread();
Common::ScopeGuard cpu_thread_guard([] { Core::UndeclareAsCPUThread(); });
TestConversion test(Core::System::GetInstance());
for (const u32 input : single_test_values)
{
const u64 expected = ConvertToDouble(input);
const u64 actual = test.ConvertSingleToDouble(input);
if (expected != actual)
fmt::print("{:08x} -> {:016x} == {:016x}\n", input, actual, expected);
EXPECT_EQ(expected, actual);
}
for (const u32 input1 : single_test_values)
{
for (const u32 input2 : single_test_values)
{
const u64 expected1 = ConvertToDouble(input1);
const u64 expected2 = ConvertToDouble(input2);
const auto [actual1, actual2] = test.ConvertSingleToDouble(input1, input2);
if (expected1 != actual1 || expected2 != actual2)
{
fmt::print("{:08x} -> {:016x} == {:016x},\n", input1, actual1, expected1);
fmt::print("{:08x} -> {:016x} == {:016x}\n", input2, actual2, expected2);
}
EXPECT_EQ(expected1, actual1);
EXPECT_EQ(expected2, actual2);
}
}
}
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