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74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
// Copyright 2021 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <functional>
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#include "Common/Arm64Emitter.h"
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#include "Common/BitUtils.h"
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#include "Common/CommonTypes.h"
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#include "Common/ScopeGuard.h"
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#include "Core/Core.h"
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#include "Core/PowerPC/Interpreter/Interpreter_FPUtils.h"
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#include "Core/PowerPC/JitArm64/Jit.h"
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#include "Core/PowerPC/PowerPC.h"
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#include "Core/System.h"
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#include "../TestValues.h"
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#include <gtest/gtest.h>
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namespace
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{
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using namespace Arm64Gen;
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class TestFres : public JitArm64
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{
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public:
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explicit TestFres(Core::System& system) : JitArm64(system)
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{
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const Common::ScopedJITPageWriteAndNoExecute enable_jit_page_writes;
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AllocCodeSpace(4096);
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const u8* raw_fres = GetCodePtr();
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GenerateFres();
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fres = Common::BitCast<u64 (*)(u64)>(GetCodePtr());
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MOV(ARM64Reg::X15, ARM64Reg::X30);
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MOV(ARM64Reg::X14, PPC_REG);
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MOVP2R(PPC_REG, &system.GetPPCState());
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MOV(ARM64Reg::X1, ARM64Reg::X0);
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m_float_emit.FMOV(ARM64Reg::D0, ARM64Reg::X0);
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m_float_emit.FRECPE(ARM64Reg::D0, ARM64Reg::D0);
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BL(raw_fres);
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MOV(ARM64Reg::X30, ARM64Reg::X15);
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MOV(PPC_REG, ARM64Reg::X14);
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RET();
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}
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std::function<u64(u64)> fres;
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};
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} // namespace
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TEST(JitArm64, Fres)
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{
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Core::DeclareAsCPUThread();
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Common::ScopeGuard cpu_thread_guard([] { Core::UndeclareAsCPUThread(); });
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TestFres test(Core::System::GetInstance());
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for (const u64 ivalue : double_test_values)
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{
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const double dvalue = Common::BitCast<double>(ivalue);
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const u64 expected = Common::BitCast<u64>(Common::ApproximateReciprocal(dvalue));
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const u64 actual = test.fres(ivalue);
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if (expected != actual)
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fmt::print("{:016x} -> {:016x} == {:016x}\n", ivalue, actual, expected);
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EXPECT_EQ(expected, actual);
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}
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}
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