JitArm64: Add FPRF unit test

Source/UnitTests/Core/CMakeLists.txt

@@ -24,6 +24,7 @@ elseif(_M_ARM_64)
   add_dolphin_test(PowerPCTest
     PowerPC/DivUtilsTest.cpp
     PowerPC/JitArm64/ConvertSingleDouble.cpp
+    PowerPC/JitArm64/FPRF.cpp
     PowerPC/JitArm64/MovI2R.cpp
   )
 else()

Source/UnitTests/Core/PowerPC/JitArm64/FPRF.cpp

@@ -0,0 +1,86 @@
+// Copyright 2021 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <cinttypes>
+#include <functional>
+#include <vector>
+
+#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 TestFPRF : public JitArm64
+{
+public:
+  TestFPRF()
+  {
+    AllocCodeSpace(4096);
+
+    const u8* raw_fprf_single = GetCodePtr();
+    GenerateFPRF(true);
+    const u8* raw_fprf_double = GetCodePtr();
+    GenerateFPRF(false);
+
+    fprf_single = Common::BitCast<void (*)(u32)>(GetCodePtr());
+    MOV(ARM64Reg::X15, ARM64Reg::X30);
+    MOV(ARM64Reg::X14, PPC_REG);
+    MOVP2R(PPC_REG, &PowerPC::ppcState);
+    BL(raw_fprf_single);
+    MOV(ARM64Reg::X30, ARM64Reg::X15);
+    MOV(PPC_REG, ARM64Reg::X14);
+    RET();
+
+    fprf_double = Common::BitCast<void (*)(u64)>(GetCodePtr());
+    MOV(ARM64Reg::X15, ARM64Reg::X30);
+    MOV(ARM64Reg::X14, PPC_REG);
+    MOVP2R(PPC_REG, &PowerPC::ppcState);
+    BL(raw_fprf_double);
+    MOV(ARM64Reg::X30, ARM64Reg::X15);
+    MOV(PPC_REG, ARM64Reg::X14);
+    RET();
+  }
+
+  std::function<void(u32)> fprf_single;
+  std::function<void(u64)> fprf_double;
+};
+
+}  // namespace
+
+static u32 RunUpdateFPRF(const std::function<void()>& f)
+{
+  PowerPC::ppcState.fpscr.Hex = 0x12345678;
+  f();
+  return PowerPC::ppcState.fpscr.Hex;
+}
+
+TEST(JitArm64, FPRF)
+{
+  TestFPRF test;
+
+  for (const u64 double_input : double_test_values)
+  {
+    const u32 expected_double =
+        RunUpdateFPRF([&] { PowerPC::UpdateFPRF(Common::BitCast<double>(double_input)); });
+    const u32 actual_double = RunUpdateFPRF([&] { test.fprf_double(double_input); });
+    EXPECT_EQ(expected_double, actual_double);
+
+    const u32 single_input = ConvertToSingle(double_input);
+
+    const u32 expected_single = RunUpdateFPRF(
+        [&] { PowerPC::UpdateFPRF(Common::BitCast<double>(ConvertToDouble(single_input))); });
+    const u32 actual_single = RunUpdateFPRF([&] { test.fprf_single(single_input); });
+    EXPECT_EQ(expected_single, actual_single);
+  }
+}

Source/UnitTests/UnitTests.vcxproj

@@ -83,6 +83,7 @@
   </ItemGroup>
   <ItemGroup Condition="'$(Platform)'=='ARM64'">
     <ClCompile Include="Core\PowerPC\JitArm64\ConvertSingleDouble.cpp" />
+    <ClCompile Include="Core\PowerPC\JitArm64\FPRF.cpp" />
     <ClCompile Include="Core\PowerPC\JitArm64\MovI2R.cpp" />
   </ItemGroup>
   <ItemGroup>