dolphin/Source/UnitTests/Core/PowerPC/JitArm64/Frsqrte.cpp

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

68 lines
1.6 KiB
C++
Raw Normal View History

2021-05-05 19:10:48 +00:00
// Copyright 2021 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
2021-05-05 19:10:48 +00:00
#include <functional>
#include "Common/Arm64Emitter.h"
#include "Common/BitUtils.h"
#include "Common/CommonTypes.h"
#include "Core/PowerPC/Interpreter/Interpreter_FPUtils.h"
#include "Core/PowerPC/JitArm64/Jit.h"
#include "Core/PowerPC/PowerPC.h"
#include "../TestValues.h"
#include <gtest/gtest.h>
namespace
{
using namespace Arm64Gen;
class TestFrsqrte : public JitArm64
{
public:
TestFrsqrte()
{
const Common::ScopedJITPageWriteAndNoExecute enable_jit_page_writes;
2021-05-05 19:10:48 +00:00
AllocCodeSpace(4096);
const u8* raw_frsqrte = GetCodePtr();
GenerateFrsqrte();
frsqrte = Common::BitCast<u64 (*)(u64)>(GetCodePtr());
MOV(ARM64Reg::X15, ARM64Reg::X30);
MOV(ARM64Reg::X14, PPC_REG);
MOVP2R(PPC_REG, &PowerPC::ppcState);
MOV(ARM64Reg::X1, ARM64Reg::X0);
m_float_emit.FMOV(ARM64Reg::D0, ARM64Reg::X0);
m_float_emit.FRSQRTE(ARM64Reg::D0, ARM64Reg::D0);
BL(raw_frsqrte);
MOV(ARM64Reg::X30, ARM64Reg::X15);
MOV(PPC_REG, ARM64Reg::X14);
RET();
}
std::function<u64(u64)> frsqrte;
};
} // namespace
TEST(JitArm64, Frsqrte)
{
TestFrsqrte test;
for (const u64 ivalue : double_test_values)
{
const double dvalue = Common::BitCast<double>(ivalue);
const u64 expected = Common::BitCast<u64>(Common::ApproximateReciprocalSquareRoot(dvalue));
const u64 actual = test.frsqrte(ivalue);
if (expected != actual)
fmt::print("{:016x} -> {:016x} == {:016x}\n", ivalue, actual, expected);
EXPECT_EQ(expected, actual);
}
}