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Ryujinx/Ryujinx.Tests/Cpu/CpuTest32.cs
gdkchan 0c87bf9ea4
Refactor CPU interface to allow the implementation of other CPU emulators (#3362) 
* Refactor CPU interface

* Use IExecutionContext interface on SVC handler, change how CPU interrupts invokes the handlers

* Make CpuEngine take a ITickSource rather than returning one

The previous implementation had the scenario where the CPU engine had to implement the tick source in mind, like for example, when we have a hypervisor and the game can read CNTPCT on the host directly. However given that we need to do conversion due to different frequencies anyway, it's not worth it. It's better to just let the user pass the tick source and redirect any reads to CNTPCT to the user tick source

* XML docs for the public interfaces

* PPTC invalidation due to NativeInterface function name changes

* Fix build of the CPU tests

* PR feedback
2022-05-31 16:29:35 -03:00

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using ARMeilleure;
using ARMeilleure.State;
using ARMeilleure.Translation;
using NUnit.Framework;
using Ryujinx.Cpu.Jit;
using Ryujinx.Memory;
using Ryujinx.Tests.Unicorn;
using System;
using MemoryPermission = Ryujinx.Tests.Unicorn.MemoryPermission;
namespace Ryujinx.Tests.Cpu
{
[TestFixture]
public class CpuTest32
{
protected const uint Size = 0x1000;
protected const uint CodeBaseAddress = 0x1000;
protected const uint DataBaseAddress = CodeBaseAddress + Size;
private uint _currAddress;
private MemoryBlock _ram;
private MemoryManager _memory;
private ExecutionContext _context;
private CpuContext _cpuContext;
private static bool _unicornAvailable;
private UnicornAArch32 _unicornEmu;
private bool _usingMemory;
static CpuTest32()
{
_unicornAvailable = UnicornAArch32.IsAvailable();
if (!_unicornAvailable)
{
Console.WriteLine("WARNING: Could not find Unicorn.");
}
}
[SetUp]
public void Setup()
{
_currAddress = CodeBaseAddress;
_ram = new MemoryBlock(Size * 2);
_memory = new MemoryManager(_ram, 1ul << 16);
_memory.IncrementReferenceCount();
_memory.Map(CodeBaseAddress, 0, Size * 2);
_context = CpuContext.CreateExecutionContext();
_context.IsAarch32 = true;
Translator.IsReadyForTranslation.Set();
_cpuContext = new CpuContext(_memory, for64Bit: false);
// Prevent registering LCQ functions in the FunctionTable to avoid initializing and populating the table,
// which improves test durations.
Optimizations.AllowLcqInFunctionTable = false;
Optimizations.UseUnmanagedDispatchLoop = false;
if (_unicornAvailable)
{
_unicornEmu = new UnicornAArch32();
_unicornEmu.MemoryMap(CodeBaseAddress, Size, MemoryPermission.READ | MemoryPermission.EXEC);
_unicornEmu.MemoryMap(DataBaseAddress, Size, MemoryPermission.READ | MemoryPermission.WRITE);
_unicornEmu.PC = CodeBaseAddress;
}
}
[TearDown]
public void Teardown()
{
_memory.DecrementReferenceCount();
_context.Dispose();
_ram.Dispose();
_memory = null;
_context = null;
_cpuContext = null;
_unicornEmu = null;
_usingMemory = false;
}
protected void Reset()
{
Teardown();
Setup();
}
protected void Opcode(uint opcode)
{
_memory.Write(_currAddress, opcode);
if (_unicornAvailable)
{
_unicornEmu.MemoryWrite32(_currAddress, opcode);
}
_currAddress += 4;
}
protected void ThumbOpcode(ushort opcode)
{
_memory.Write(_currAddress, opcode);
if (_unicornAvailable)
{
_unicornEmu.MemoryWrite16(_currAddress, opcode);
}
_currAddress += 2;
}
protected ExecutionContext GetContext() => _context;
protected void SetContext(uint r0 = 0,
uint r1 = 0,
uint r2 = 0,
uint r3 = 0,
uint sp = 0,
V128 v0 = default,
V128 v1 = default,
V128 v2 = default,
V128 v3 = default,
V128 v4 = default,
V128 v5 = default,
V128 v14 = default,
V128 v15 = default,
bool saturation = false,
bool overflow = false,
bool carry = false,
bool zero = false,
bool negative = false,
int fpscr = 0,
bool thumb = false)
{
_context.SetX(0, r0);
_context.SetX(1, r1);
_context.SetX(2, r2);
_context.SetX(3, r3);
_context.SetX(13, sp);
_context.SetV(0, v0);
_context.SetV(1, v1);
_context.SetV(2, v2);
_context.SetV(3, v3);
_context.SetV(4, v4);
_context.SetV(5, v5);
_context.SetV(14, v14);
_context.SetV(15, v15);
_context.SetPstateFlag(PState.QFlag, saturation);
_context.SetPstateFlag(PState.VFlag, overflow);
_context.SetPstateFlag(PState.CFlag, carry);
_context.SetPstateFlag(PState.ZFlag, zero);
_context.SetPstateFlag(PState.NFlag, negative);
SetFpscr((uint)fpscr);
_context.SetPstateFlag(PState.TFlag, thumb);
if (_unicornAvailable)
{
_unicornEmu.R[0] = r0;
_unicornEmu.R[1] = r1;
_unicornEmu.R[2] = r2;
_unicornEmu.R[3] = r3;
_unicornEmu.SP = sp;
_unicornEmu.Q[0] = V128ToSimdValue(v0);
_unicornEmu.Q[1] = V128ToSimdValue(v1);
_unicornEmu.Q[2] = V128ToSimdValue(v2);
_unicornEmu.Q[3] = V128ToSimdValue(v3);
_unicornEmu.Q[4] = V128ToSimdValue(v4);
_unicornEmu.Q[5] = V128ToSimdValue(v5);
_unicornEmu.Q[14] = V128ToSimdValue(v14);
_unicornEmu.Q[15] = V128ToSimdValue(v15);
_unicornEmu.QFlag = saturation;
_unicornEmu.OverflowFlag = overflow;
_unicornEmu.CarryFlag = carry;
_unicornEmu.ZeroFlag = zero;
_unicornEmu.NegativeFlag = negative;
_unicornEmu.Fpscr = fpscr;
_unicornEmu.ThumbFlag = thumb;
}
}
protected void ExecuteOpcodes(bool runUnicorn = true)
{
_cpuContext.Execute(_context, CodeBaseAddress);
if (_unicornAvailable && runUnicorn)
{
_unicornEmu.RunForCount((_currAddress - CodeBaseAddress - 4) / 4);
}
}
protected ExecutionContext SingleOpcode(uint opcode,
uint r0 = 0,
uint r1 = 0,
uint r2 = 0,
uint r3 = 0,
uint sp = 0,
V128 v0 = default,
V128 v1 = default,
V128 v2 = default,
V128 v3 = default,
V128 v4 = default,
V128 v5 = default,
V128 v14 = default,
V128 v15 = default,
bool saturation = false,
bool overflow = false,
bool carry = false,
bool zero = false,
bool negative = false,
int fpscr = 0,
bool runUnicorn = true)
{
Opcode(opcode);
Opcode(0xE12FFF1E); // BX LR
SetContext(r0, r1, r2, r3, sp, v0, v1, v2, v3, v4, v5, v14, v15, saturation, overflow, carry, zero, negative, fpscr);
ExecuteOpcodes(runUnicorn);
return GetContext();
}
protected ExecutionContext SingleThumbOpcode(ushort opcode,
uint r0 = 0,
uint r1 = 0,
uint r2 = 0,
uint r3 = 0,
uint sp = 0,
bool saturation = false,
bool overflow = false,
bool carry = false,
bool zero = false,
bool negative = false,
int fpscr = 0,
bool runUnicorn = true)
{
ThumbOpcode(opcode);
ThumbOpcode(0x4770); // BX LR
SetContext(r0, r1, r2, r3, sp, default, default, default, default, default, default, default, default, saturation, overflow, carry, zero, negative, fpscr, thumb: true);
ExecuteOpcodes(runUnicorn);
return GetContext();
}
public void RunPrecomputedTestCase(PrecomputedThumbTestCase test)
{
foreach (ushort instruction in test.Instructions)
{
ThumbOpcode(instruction);
}
for (int i = 0; i < 15; i++)
{
GetContext().SetX(i, test.StartRegs[i]);
}
uint startCpsr = test.StartRegs[15];
for (int i = 0; i < 32; i++)
{
GetContext().SetPstateFlag((PState)i, (startCpsr & (1u << i)) != 0);
}
ExecuteOpcodes(runUnicorn: false);
for (int i = 0; i < 15; i++)
{
Assert.That(GetContext().GetX(i), Is.EqualTo(test.FinalRegs[i]));
}
uint finalCpsr = test.FinalRegs[15];
Assert.That(GetContext().Pstate, Is.EqualTo(finalCpsr));
}
public void RunPrecomputedTestCase(PrecomputedMemoryThumbTestCase test)
{
byte[] testMem = new byte[Size];
for (ulong i = 0; i < Size; i += 2)
{
testMem[i + 0] = (byte)((i + DataBaseAddress) >> 0);
testMem[i + 1] = (byte)((i + DataBaseAddress) >> 8);
}
SetWorkingMemory(0, testMem);
RunPrecomputedTestCase(new PrecomputedThumbTestCase(){
Instructions = test.Instructions,
StartRegs = test.StartRegs,
FinalRegs = test.FinalRegs,
});
foreach (var delta in test.MemoryDelta)
{
testMem[delta.Address - DataBaseAddress + 0] = (byte)(delta.Value >> 0);
testMem[delta.Address - DataBaseAddress + 1] = (byte)(delta.Value >> 8);
}
byte[] mem = _memory.GetSpan(DataBaseAddress, (int)Size).ToArray();
Assert.That(mem, Is.EqualTo(testMem), "testmem");
}
protected void SetWorkingMemory(uint offset, byte[] data)
{
_memory.Write(DataBaseAddress + offset, data);
if (_unicornAvailable)
{
_unicornEmu.MemoryWrite(DataBaseAddress + offset, data);
}
_usingMemory = true; // When true, CompareAgainstUnicorn checks the working memory for equality too.
}
/// <summary>Rounding Mode control field.</summary>
public enum RMode
{
/// <summary>Round to Nearest mode.</summary>
Rn,
/// <summary>Round towards Plus Infinity mode.</summary>
Rp,
/// <summary>Round towards Minus Infinity mode.</summary>
Rm,
/// <summary>Round towards Zero mode.</summary>
Rz
};
/// <summary>Floating-point Control Register.</summary>
protected enum Fpcr
{
/// <summary>Rounding Mode control field.</summary>
RMode = 22,
/// <summary>Flush-to-zero mode control bit.</summary>
Fz = 24,
/// <summary>Default NaN mode control bit.</summary>
Dn = 25,
/// <summary>Alternative half-precision control bit.</summary>
Ahp = 26
}
/// <summary>Floating-point Status Register.</summary>
[Flags]
protected enum Fpsr
{
None = 0,
/// <summary>Invalid Operation cumulative floating-point exception bit.</summary>
Ioc = 1 << 0,
/// <summary>Divide by Zero cumulative floating-point exception bit.</summary>
Dzc = 1 << 1,
/// <summary>Overflow cumulative floating-point exception bit.</summary>
Ofc = 1 << 2,
/// <summary>Underflow cumulative floating-point exception bit.</summary>
Ufc = 1 << 3,
/// <summary>Inexact cumulative floating-point exception bit.</summary>
Ixc = 1 << 4,
/// <summary>Input Denormal cumulative floating-point exception bit.</summary>
Idc = 1 << 7,
/// <summary>Cumulative saturation bit.</summary>
Qc = 1 << 27,
/// <summary>NZCV flags.</summary>
Nzcv = (1 << 31) | (1 << 30) | (1 << 29) | (1 << 28)
}
[Flags]
protected enum FpSkips
{
None = 0,
IfNaNS = 1,
IfNaND = 2,
IfUnderflow = 4,
IfOverflow = 8
}
protected enum FpTolerances
{
None,
UpToOneUlpsS,
UpToOneUlpsD
}
protected void CompareAgainstUnicorn(
Fpsr fpsrMask = Fpsr.None,
FpSkips fpSkips = FpSkips.None,
FpTolerances fpTolerances = FpTolerances.None)
{
if (!_unicornAvailable)
{
return;
}
if (fpSkips != FpSkips.None)
{
ManageFpSkips(fpSkips);
}
Assert.That(_context.GetX(0), Is.EqualTo(_unicornEmu.R[0]), "R0");
Assert.That(_context.GetX(1), Is.EqualTo(_unicornEmu.R[1]), "R1");
Assert.That(_context.GetX(2), Is.EqualTo(_unicornEmu.R[2]), "R2");
Assert.That(_context.GetX(3), Is.EqualTo(_unicornEmu.R[3]), "R3");
Assert.That(_context.GetX(4), Is.EqualTo(_unicornEmu.R[4]));
Assert.That(_context.GetX(5), Is.EqualTo(_unicornEmu.R[5]));
Assert.That(_context.GetX(6), Is.EqualTo(_unicornEmu.R[6]));
Assert.That(_context.GetX(7), Is.EqualTo(_unicornEmu.R[7]));
Assert.That(_context.GetX(8), Is.EqualTo(_unicornEmu.R[8]));
Assert.That(_context.GetX(9), Is.EqualTo(_unicornEmu.R[9]));
Assert.That(_context.GetX(10), Is.EqualTo(_unicornEmu.R[10]));
Assert.That(_context.GetX(11), Is.EqualTo(_unicornEmu.R[11]));
Assert.That(_context.GetX(12), Is.EqualTo(_unicornEmu.R[12]));
Assert.That(_context.GetX(13), Is.EqualTo(_unicornEmu.SP), "SP");
Assert.That(_context.GetX(14), Is.EqualTo(_unicornEmu.R[14]));
if (fpTolerances == FpTolerances.None)
{
Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]), "V0");
}
else
{
ManageFpTolerances(fpTolerances);
}
Assert.That(V128ToSimdValue(_context.GetV(1)), Is.EqualTo(_unicornEmu.Q[1]), "V1");
Assert.That(V128ToSimdValue(_context.GetV(2)), Is.EqualTo(_unicornEmu.Q[2]), "V2");
Assert.That(V128ToSimdValue(_context.GetV(3)), Is.EqualTo(_unicornEmu.Q[3]), "V3");
Assert.That(V128ToSimdValue(_context.GetV(4)), Is.EqualTo(_unicornEmu.Q[4]), "V4");
Assert.That(V128ToSimdValue(_context.GetV(5)), Is.EqualTo(_unicornEmu.Q[5]), "V5");
Assert.That(V128ToSimdValue(_context.GetV(6)), Is.EqualTo(_unicornEmu.Q[6]));
Assert.That(V128ToSimdValue(_context.GetV(7)), Is.EqualTo(_unicornEmu.Q[7]));
Assert.That(V128ToSimdValue(_context.GetV(8)), Is.EqualTo(_unicornEmu.Q[8]));
Assert.That(V128ToSimdValue(_context.GetV(9)), Is.EqualTo(_unicornEmu.Q[9]));
Assert.That(V128ToSimdValue(_context.GetV(10)), Is.EqualTo(_unicornEmu.Q[10]));
Assert.That(V128ToSimdValue(_context.GetV(11)), Is.EqualTo(_unicornEmu.Q[11]));
Assert.That(V128ToSimdValue(_context.GetV(12)), Is.EqualTo(_unicornEmu.Q[12]));
Assert.That(V128ToSimdValue(_context.GetV(13)), Is.EqualTo(_unicornEmu.Q[13]));
Assert.That(V128ToSimdValue(_context.GetV(14)), Is.EqualTo(_unicornEmu.Q[14]), "V14");
Assert.That(V128ToSimdValue(_context.GetV(15)), Is.EqualTo(_unicornEmu.Q[15]), "V15");
Assert.Multiple(() =>
{
Assert.That(_context.GetPstateFlag(PState.QFlag), Is.EqualTo(_unicornEmu.QFlag), "QFlag");
Assert.That(_context.GetPstateFlag(PState.VFlag), Is.EqualTo(_unicornEmu.OverflowFlag), "VFlag");
Assert.That(_context.GetPstateFlag(PState.CFlag), Is.EqualTo(_unicornEmu.CarryFlag), "CFlag");
Assert.That(_context.GetPstateFlag(PState.ZFlag), Is.EqualTo(_unicornEmu.ZeroFlag), "ZFlag");
Assert.That(_context.GetPstateFlag(PState.NFlag), Is.EqualTo(_unicornEmu.NegativeFlag), "NFlag");
});
Assert.That((int)GetFpscr() & (int)fpsrMask, Is.EqualTo(_unicornEmu.Fpscr & (int)fpsrMask), "Fpscr");
if (_usingMemory)
{
byte[] mem = _memory.GetSpan(DataBaseAddress, (int)Size).ToArray();
byte[] unicornMem = _unicornEmu.MemoryRead(DataBaseAddress, Size);
Assert.That(mem, Is.EqualTo(unicornMem), "Data");
}
}
private void ManageFpSkips(FpSkips fpSkips)
{
if (fpSkips.HasFlag(FpSkips.IfNaNS))
{
if (float.IsNaN(_unicornEmu.Q[0].AsFloat()))
{
Assert.Ignore("NaN test.");
}
}
else if (fpSkips.HasFlag(FpSkips.IfNaND))
{
if (double.IsNaN(_unicornEmu.Q[0].AsDouble()))
{
Assert.Ignore("NaN test.");
}
}
if (fpSkips.HasFlag(FpSkips.IfUnderflow))
{
if ((_unicornEmu.Fpscr & (int)Fpsr.Ufc) != 0)
{
Assert.Ignore("Underflow test.");
}
}
if (fpSkips.HasFlag(FpSkips.IfOverflow))
{
if ((_unicornEmu.Fpscr & (int)Fpsr.Ofc) != 0)
{
Assert.Ignore("Overflow test.");
}
}
}
private void ManageFpTolerances(FpTolerances fpTolerances)
{
bool IsNormalOrSubnormalS(float f) => float.IsNormal(f) || float.IsSubnormal(f);
bool IsNormalOrSubnormalD(double d) => double.IsNormal(d) || double.IsSubnormal(d);
if (!Is.EqualTo(_unicornEmu.Q[0]).ApplyTo(V128ToSimdValue(_context.GetV(0))).IsSuccess)
{
if (fpTolerances == FpTolerances.UpToOneUlpsS)
{
if (IsNormalOrSubnormalS(_unicornEmu.Q[0].AsFloat()) &&
IsNormalOrSubnormalS(_context.GetV(0).As<float>()))
{
Assert.Multiple(() =>
{
Assert.That(_context.GetV(0).Extract<float>(0),
Is.EqualTo(_unicornEmu.Q[0].GetFloat(0)).Within(1).Ulps, "V0[0]");
Assert.That(_context.GetV(0).Extract<float>(1),
Is.EqualTo(_unicornEmu.Q[0].GetFloat(1)).Within(1).Ulps, "V0[1]");
Assert.That(_context.GetV(0).Extract<float>(2),
Is.EqualTo(_unicornEmu.Q[0].GetFloat(2)).Within(1).Ulps, "V0[2]");
Assert.That(_context.GetV(0).Extract<float>(3),
Is.EqualTo(_unicornEmu.Q[0].GetFloat(3)).Within(1).Ulps, "V0[3]");
});
Console.WriteLine(fpTolerances);
}
else
{
Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]));
}
}
if (fpTolerances == FpTolerances.UpToOneUlpsD)
{
if (IsNormalOrSubnormalD(_unicornEmu.Q[0].AsDouble()) &&
IsNormalOrSubnormalD(_context.GetV(0).As<double>()))
{
Assert.Multiple(() =>
{
Assert.That(_context.GetV(0).Extract<double>(0),
Is.EqualTo(_unicornEmu.Q[0].GetDouble(0)).Within(1).Ulps, "V0[0]");
Assert.That(_context.GetV(0).Extract<double>(1),
Is.EqualTo(_unicornEmu.Q[0].GetDouble(1)).Within(1).Ulps, "V0[1]");
});
Console.WriteLine(fpTolerances);
}
else
{
Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]));
}
}
}
}
private static SimdValue V128ToSimdValue(V128 value)
{
return new SimdValue(value.Extract<ulong>(0), value.Extract<ulong>(1));
}
protected static V128 MakeVectorScalar(float value) => new V128(value);
protected static V128 MakeVectorScalar(double value) => new V128(value);
protected static V128 MakeVectorE0(ulong e0) => new V128(e0, 0);
protected static V128 MakeVectorE1(ulong e1) => new V128(0, e1);
protected static V128 MakeVectorE0E1(ulong e0, ulong e1) => new V128(e0, e1);
protected static V128 MakeVectorE0E1E2E3(uint e0, uint e1, uint e2, uint e3)
{
return new V128(e0, e1, e2, e3);
}
protected static ulong GetVectorE0(V128 vector) => vector.Extract<ulong>(0);
protected static ulong GetVectorE1(V128 vector) => vector.Extract<ulong>(1);
protected static ushort GenNormalH()
{
uint rnd;
do rnd = TestContext.CurrentContext.Random.NextUShort();
while ((rnd & 0x7C00u) == 0u ||
(~rnd & 0x7C00u) == 0u);
return (ushort)rnd;
}
protected static ushort GenSubnormalH()
{
uint rnd;
do rnd = TestContext.CurrentContext.Random.NextUShort();
while ((rnd & 0x03FFu) == 0u);
return (ushort)(rnd & 0x83FFu);
}
protected static uint GenNormalS()
{
uint rnd;
do rnd = TestContext.CurrentContext.Random.NextUInt();
while ((rnd & 0x7F800000u) == 0u ||
(~rnd & 0x7F800000u) == 0u);
return rnd;
}
protected static uint GenSubnormalS()
{
uint rnd;
do rnd = TestContext.CurrentContext.Random.NextUInt();
while ((rnd & 0x007FFFFFu) == 0u);
return rnd & 0x807FFFFFu;
}
protected static ulong GenNormalD()
{
ulong rnd;
do rnd = TestContext.CurrentContext.Random.NextULong();
while ((rnd & 0x7FF0000000000000ul) == 0ul ||
(~rnd & 0x7FF0000000000000ul) == 0ul);
return rnd;
}
protected static ulong GenSubnormalD()
{
ulong rnd;
do rnd = TestContext.CurrentContext.Random.NextULong();
while ((rnd & 0x000FFFFFFFFFFFFFul) == 0ul);
return rnd & 0x800FFFFFFFFFFFFFul;
}
private uint GetFpscr()
{
uint fpscr = (uint)(_context.Fpsr & FPSR.A32Mask & ~FPSR.Nzcv) | (uint)(_context.Fpcr & FPCR.A32Mask);
fpscr |= _context.GetFPstateFlag(FPState.NFlag) ? (1u << (int)FPState.NFlag) : 0;
fpscr |= _context.GetFPstateFlag(FPState.ZFlag) ? (1u << (int)FPState.ZFlag) : 0;
fpscr |= _context.GetFPstateFlag(FPState.CFlag) ? (1u << (int)FPState.CFlag) : 0;
fpscr |= _context.GetFPstateFlag(FPState.VFlag) ? (1u << (int)FPState.VFlag) : 0;
return fpscr;
}
private void SetFpscr(uint fpscr)
{
_context.Fpsr = FPSR.A32Mask & (FPSR)fpscr;
_context.Fpcr = FPCR.A32Mask & (FPCR)fpscr;
_context.SetFPstateFlag(FPState.NFlag, (fpscr & (1u << (int)FPState.NFlag)) != 0);
_context.SetFPstateFlag(FPState.ZFlag, (fpscr & (1u << (int)FPState.ZFlag)) != 0);
_context.SetFPstateFlag(FPState.CFlag, (fpscr & (1u << (int)FPState.CFlag)) != 0);
_context.SetFPstateFlag(FPState.VFlag, (fpscr & (1u << (int)FPState.VFlag)) != 0);
}
}
}
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