95017b8c66
* Back to the origins: Make memory manager take guest PA rather than host address once again * Direct mapping with alias support on Windows * Fixes and remove more of the emulated shared memory * Linux support * Make shared and transfer memory not depend on SharedMemoryStorage * More efficient view mapping on Windows (no more restricted to 4KB pages at a time) * Handle potential access violations caused by partial unmap * Implement host mapping using shared memory on Linux * Add new GetPhysicalAddressChecked method, used to ensure the virtual address is mapped before address translation Also align GetRef behaviour with software memory manager * We don't need a mirrorable memory block for software memory manager mode * Disable memory aliasing tests while we don't have shared memory support on Mac * Shared memory & SIGBUS handler for macOS * Fix typo + nits + re-enable memory tests * Set MAP_JIT_DARWIN on x86 Mac too * Add back the address space mirror * Only set MAP_JIT_DARWIN if we are mapping as executable * Disable aliasing tests again (still fails on Mac) * Fix UnmapView4KB (by not casting size to int) * Use ref counting on memory blocks to delay closing the shared memory handle until all blocks using it are disposed * Address PR feedback * Make RO hold a reference to the guest process memory manager to avoid early disposal Co-authored-by: nastys <nastys@users.noreply.github.com>
673 lines
No EOL
25 KiB
C#
673 lines
No EOL
25 KiB
C#
using ARMeilleure;
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using ARMeilleure.State;
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using ARMeilleure.Translation;
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using NUnit.Framework;
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using Ryujinx.Cpu;
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using Ryujinx.Memory;
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using Ryujinx.Tests.Unicorn;
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using System;
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using MemoryPermission = Ryujinx.Tests.Unicorn.MemoryPermission;
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namespace Ryujinx.Tests.Cpu
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{
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[TestFixture]
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public class CpuTest32
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{
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protected const uint Size = 0x1000;
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protected const uint CodeBaseAddress = 0x1000;
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protected const uint DataBaseAddress = CodeBaseAddress + Size;
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private uint _currAddress;
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private MemoryBlock _ram;
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private MemoryManager _memory;
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private ExecutionContext _context;
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private CpuContext _cpuContext;
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private static bool _unicornAvailable;
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private UnicornAArch32 _unicornEmu;
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private bool _usingMemory;
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static CpuTest32()
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{
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_unicornAvailable = UnicornAArch32.IsAvailable();
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if (!_unicornAvailable)
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{
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Console.WriteLine("WARNING: Could not find Unicorn.");
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}
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}
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[SetUp]
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public void Setup()
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{
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_currAddress = CodeBaseAddress;
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_ram = new MemoryBlock(Size * 2);
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_memory = new MemoryManager(_ram, 1ul << 16);
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_memory.IncrementReferenceCount();
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_memory.Map(CodeBaseAddress, 0, Size * 2);
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_context = CpuContext.CreateExecutionContext();
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_context.IsAarch32 = true;
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Translator.IsReadyForTranslation.Set();
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_cpuContext = new CpuContext(_memory, for64Bit: false);
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// Prevent registering LCQ functions in the FunctionTable to avoid initializing and populating the table,
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// which improves test durations.
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Optimizations.AllowLcqInFunctionTable = false;
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Optimizations.UseUnmanagedDispatchLoop = false;
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if (_unicornAvailable)
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{
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_unicornEmu = new UnicornAArch32();
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_unicornEmu.MemoryMap(CodeBaseAddress, Size, MemoryPermission.READ | MemoryPermission.EXEC);
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_unicornEmu.MemoryMap(DataBaseAddress, Size, MemoryPermission.READ | MemoryPermission.WRITE);
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_unicornEmu.PC = CodeBaseAddress;
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}
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}
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[TearDown]
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public void Teardown()
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{
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_memory.DecrementReferenceCount();
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_context.Dispose();
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_ram.Dispose();
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_memory = null;
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_context = null;
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_cpuContext = null;
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_unicornEmu = null;
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_usingMemory = false;
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}
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protected void Reset()
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{
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Teardown();
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Setup();
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}
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protected void Opcode(uint opcode)
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{
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_memory.Write(_currAddress, opcode);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite32(_currAddress, opcode);
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}
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_currAddress += 4;
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}
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protected void ThumbOpcode(ushort opcode)
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{
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_memory.Write(_currAddress, opcode);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite16(_currAddress, opcode);
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}
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_currAddress += 2;
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}
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protected ExecutionContext GetContext() => _context;
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protected void SetContext(uint r0 = 0,
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uint r1 = 0,
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uint r2 = 0,
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uint r3 = 0,
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uint sp = 0,
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V128 v0 = default,
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V128 v1 = default,
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V128 v2 = default,
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V128 v3 = default,
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V128 v4 = default,
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V128 v5 = default,
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V128 v14 = default,
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V128 v15 = default,
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bool saturation = false,
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bool overflow = false,
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bool carry = false,
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bool zero = false,
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bool negative = false,
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int fpscr = 0,
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bool thumb = false)
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{
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_context.SetX(0, r0);
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_context.SetX(1, r1);
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_context.SetX(2, r2);
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_context.SetX(3, r3);
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_context.SetX(13, sp);
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_context.SetV(0, v0);
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_context.SetV(1, v1);
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_context.SetV(2, v2);
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_context.SetV(3, v3);
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_context.SetV(4, v4);
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_context.SetV(5, v5);
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_context.SetV(14, v14);
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_context.SetV(15, v15);
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_context.SetPstateFlag(PState.QFlag, saturation);
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_context.SetPstateFlag(PState.VFlag, overflow);
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_context.SetPstateFlag(PState.CFlag, carry);
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_context.SetPstateFlag(PState.ZFlag, zero);
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_context.SetPstateFlag(PState.NFlag, negative);
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SetFpscr((uint)fpscr);
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_context.SetPstateFlag(PState.TFlag, thumb);
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if (_unicornAvailable)
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{
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_unicornEmu.R[0] = r0;
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_unicornEmu.R[1] = r1;
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_unicornEmu.R[2] = r2;
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_unicornEmu.R[3] = r3;
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_unicornEmu.SP = sp;
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_unicornEmu.Q[0] = V128ToSimdValue(v0);
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_unicornEmu.Q[1] = V128ToSimdValue(v1);
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_unicornEmu.Q[2] = V128ToSimdValue(v2);
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_unicornEmu.Q[3] = V128ToSimdValue(v3);
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_unicornEmu.Q[4] = V128ToSimdValue(v4);
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_unicornEmu.Q[5] = V128ToSimdValue(v5);
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_unicornEmu.Q[14] = V128ToSimdValue(v14);
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_unicornEmu.Q[15] = V128ToSimdValue(v15);
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_unicornEmu.QFlag = saturation;
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_unicornEmu.OverflowFlag = overflow;
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_unicornEmu.CarryFlag = carry;
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_unicornEmu.ZeroFlag = zero;
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_unicornEmu.NegativeFlag = negative;
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_unicornEmu.Fpscr = fpscr;
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_unicornEmu.ThumbFlag = thumb;
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}
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}
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protected void ExecuteOpcodes(bool runUnicorn = true)
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{
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_cpuContext.Execute(_context, CodeBaseAddress);
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if (_unicornAvailable && runUnicorn)
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{
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_unicornEmu.RunForCount((_currAddress - CodeBaseAddress - 4) / 4);
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}
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}
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protected ExecutionContext SingleOpcode(uint opcode,
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uint r0 = 0,
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uint r1 = 0,
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uint r2 = 0,
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uint r3 = 0,
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uint sp = 0,
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V128 v0 = default,
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V128 v1 = default,
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V128 v2 = default,
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V128 v3 = default,
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V128 v4 = default,
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V128 v5 = default,
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V128 v14 = default,
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V128 v15 = default,
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bool saturation = false,
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bool overflow = false,
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bool carry = false,
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bool zero = false,
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bool negative = false,
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int fpscr = 0,
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bool runUnicorn = true)
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{
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Opcode(opcode);
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Opcode(0xE12FFF1E); // BX LR
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SetContext(r0, r1, r2, r3, sp, v0, v1, v2, v3, v4, v5, v14, v15, saturation, overflow, carry, zero, negative, fpscr);
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ExecuteOpcodes(runUnicorn);
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return GetContext();
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}
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protected ExecutionContext SingleThumbOpcode(ushort opcode,
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uint r0 = 0,
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uint r1 = 0,
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uint r2 = 0,
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uint r3 = 0,
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uint sp = 0,
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bool saturation = false,
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bool overflow = false,
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bool carry = false,
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bool zero = false,
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bool negative = false,
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int fpscr = 0,
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bool runUnicorn = true)
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{
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ThumbOpcode(opcode);
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ThumbOpcode(0x4770); // BX LR
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SetContext(r0, r1, r2, r3, sp, default, default, default, default, default, default, default, default, saturation, overflow, carry, zero, negative, fpscr, thumb: true);
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ExecuteOpcodes(runUnicorn);
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return GetContext();
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}
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public void RunPrecomputedTestCase(PrecomputedThumbTestCase test)
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{
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foreach (ushort instruction in test.Instructions)
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{
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ThumbOpcode(instruction);
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}
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for (int i = 0; i < 15; i++)
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{
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GetContext().SetX(i, test.StartRegs[i]);
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}
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uint startCpsr = test.StartRegs[15];
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for (int i = 0; i < 32; i++)
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{
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GetContext().SetPstateFlag((PState)i, (startCpsr & (1u << i)) != 0);
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}
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ExecuteOpcodes(runUnicorn: false);
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for (int i = 0; i < 15; i++)
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{
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Assert.That(GetContext().GetX(i), Is.EqualTo(test.FinalRegs[i]));
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}
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uint finalCpsr = test.FinalRegs[15];
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Assert.That(GetContext().Pstate, Is.EqualTo(finalCpsr));
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}
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public void RunPrecomputedTestCase(PrecomputedMemoryThumbTestCase test)
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{
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byte[] testMem = new byte[Size];
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for (ulong i = 0; i < Size; i += 2)
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{
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testMem[i + 0] = (byte)((i + DataBaseAddress) >> 0);
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testMem[i + 1] = (byte)((i + DataBaseAddress) >> 8);
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}
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SetWorkingMemory(0, testMem);
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RunPrecomputedTestCase(new PrecomputedThumbTestCase(){
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Instructions = test.Instructions,
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StartRegs = test.StartRegs,
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FinalRegs = test.FinalRegs,
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});
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foreach (var delta in test.MemoryDelta)
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{
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testMem[delta.Address - DataBaseAddress + 0] = (byte)(delta.Value >> 0);
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testMem[delta.Address - DataBaseAddress + 1] = (byte)(delta.Value >> 8);
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}
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byte[] mem = _memory.GetSpan(DataBaseAddress, (int)Size).ToArray();
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Assert.That(mem, Is.EqualTo(testMem), "testmem");
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}
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protected void SetWorkingMemory(uint offset, byte[] data)
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{
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_memory.Write(DataBaseAddress + offset, data);
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if (_unicornAvailable)
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{
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_unicornEmu.MemoryWrite(DataBaseAddress + offset, data);
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}
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_usingMemory = true; // When true, CompareAgainstUnicorn checks the working memory for equality too.
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}
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/// <summary>Rounding Mode control field.</summary>
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public enum RMode
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{
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/// <summary>Round to Nearest mode.</summary>
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Rn,
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/// <summary>Round towards Plus Infinity mode.</summary>
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Rp,
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/// <summary>Round towards Minus Infinity mode.</summary>
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Rm,
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/// <summary>Round towards Zero mode.</summary>
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Rz
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};
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/// <summary>Floating-point Control Register.</summary>
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protected enum Fpcr
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{
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/// <summary>Rounding Mode control field.</summary>
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RMode = 22,
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/// <summary>Flush-to-zero mode control bit.</summary>
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Fz = 24,
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/// <summary>Default NaN mode control bit.</summary>
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Dn = 25,
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/// <summary>Alternative half-precision control bit.</summary>
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Ahp = 26
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}
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/// <summary>Floating-point Status Register.</summary>
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[Flags]
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protected enum Fpsr
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{
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None = 0,
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/// <summary>Invalid Operation cumulative floating-point exception bit.</summary>
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Ioc = 1 << 0,
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/// <summary>Divide by Zero cumulative floating-point exception bit.</summary>
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Dzc = 1 << 1,
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/// <summary>Overflow cumulative floating-point exception bit.</summary>
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Ofc = 1 << 2,
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/// <summary>Underflow cumulative floating-point exception bit.</summary>
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Ufc = 1 << 3,
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/// <summary>Inexact cumulative floating-point exception bit.</summary>
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Ixc = 1 << 4,
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/// <summary>Input Denormal cumulative floating-point exception bit.</summary>
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Idc = 1 << 7,
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/// <summary>Cumulative saturation bit.</summary>
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Qc = 1 << 27,
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/// <summary>NZCV flags.</summary>
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Nzcv = (1 << 31) | (1 << 30) | (1 << 29) | (1 << 28)
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}
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[Flags]
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protected enum FpSkips
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{
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None = 0,
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IfNaNS = 1,
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IfNaND = 2,
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IfUnderflow = 4,
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IfOverflow = 8
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}
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protected enum FpTolerances
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{
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None,
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UpToOneUlpsS,
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UpToOneUlpsD
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}
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protected void CompareAgainstUnicorn(
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Fpsr fpsrMask = Fpsr.None,
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FpSkips fpSkips = FpSkips.None,
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FpTolerances fpTolerances = FpTolerances.None)
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{
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if (!_unicornAvailable)
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{
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return;
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}
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if (fpSkips != FpSkips.None)
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{
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ManageFpSkips(fpSkips);
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}
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Assert.That(_context.GetX(0), Is.EqualTo(_unicornEmu.R[0]), "R0");
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Assert.That(_context.GetX(1), Is.EqualTo(_unicornEmu.R[1]), "R1");
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Assert.That(_context.GetX(2), Is.EqualTo(_unicornEmu.R[2]), "R2");
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Assert.That(_context.GetX(3), Is.EqualTo(_unicornEmu.R[3]), "R3");
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Assert.That(_context.GetX(4), Is.EqualTo(_unicornEmu.R[4]));
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Assert.That(_context.GetX(5), Is.EqualTo(_unicornEmu.R[5]));
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Assert.That(_context.GetX(6), Is.EqualTo(_unicornEmu.R[6]));
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Assert.That(_context.GetX(7), Is.EqualTo(_unicornEmu.R[7]));
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Assert.That(_context.GetX(8), Is.EqualTo(_unicornEmu.R[8]));
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Assert.That(_context.GetX(9), Is.EqualTo(_unicornEmu.R[9]));
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Assert.That(_context.GetX(10), Is.EqualTo(_unicornEmu.R[10]));
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Assert.That(_context.GetX(11), Is.EqualTo(_unicornEmu.R[11]));
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Assert.That(_context.GetX(12), Is.EqualTo(_unicornEmu.R[12]));
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Assert.That(_context.GetX(13), Is.EqualTo(_unicornEmu.SP), "SP");
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Assert.That(_context.GetX(14), Is.EqualTo(_unicornEmu.R[14]));
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if (fpTolerances == FpTolerances.None)
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{
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Assert.That(V128ToSimdValue(_context.GetV(0)), Is.EqualTo(_unicornEmu.Q[0]), "V0");
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}
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else
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{
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ManageFpTolerances(fpTolerances);
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}
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Assert.That(V128ToSimdValue(_context.GetV(1)), Is.EqualTo(_unicornEmu.Q[1]), "V1");
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Assert.That(V128ToSimdValue(_context.GetV(2)), Is.EqualTo(_unicornEmu.Q[2]), "V2");
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Assert.That(V128ToSimdValue(_context.GetV(3)), Is.EqualTo(_unicornEmu.Q[3]), "V3");
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Assert.That(V128ToSimdValue(_context.GetV(4)), Is.EqualTo(_unicornEmu.Q[4]), "V4");
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Assert.That(V128ToSimdValue(_context.GetV(5)), Is.EqualTo(_unicornEmu.Q[5]), "V5");
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Assert.That(V128ToSimdValue(_context.GetV(6)), Is.EqualTo(_unicornEmu.Q[6]));
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Assert.That(V128ToSimdValue(_context.GetV(7)), Is.EqualTo(_unicornEmu.Q[7]));
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Assert.That(V128ToSimdValue(_context.GetV(8)), Is.EqualTo(_unicornEmu.Q[8]));
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Assert.That(V128ToSimdValue(_context.GetV(9)), Is.EqualTo(_unicornEmu.Q[9]));
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Assert.That(V128ToSimdValue(_context.GetV(10)), Is.EqualTo(_unicornEmu.Q[10]));
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Assert.That(V128ToSimdValue(_context.GetV(11)), Is.EqualTo(_unicornEmu.Q[11]));
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Assert.That(V128ToSimdValue(_context.GetV(12)), Is.EqualTo(_unicornEmu.Q[12]));
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Assert.That(V128ToSimdValue(_context.GetV(13)), Is.EqualTo(_unicornEmu.Q[13]));
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Assert.That(V128ToSimdValue(_context.GetV(14)), Is.EqualTo(_unicornEmu.Q[14]), "V14");
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Assert.That(V128ToSimdValue(_context.GetV(15)), Is.EqualTo(_unicornEmu.Q[15]), "V15");
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Assert.Multiple(() =>
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{
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Assert.That(_context.GetPstateFlag(PState.QFlag), Is.EqualTo(_unicornEmu.QFlag), "QFlag");
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Assert.That(_context.GetPstateFlag(PState.VFlag), Is.EqualTo(_unicornEmu.OverflowFlag), "VFlag");
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Assert.That(_context.GetPstateFlag(PState.CFlag), Is.EqualTo(_unicornEmu.CarryFlag), "CFlag");
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Assert.That(_context.GetPstateFlag(PState.ZFlag), Is.EqualTo(_unicornEmu.ZeroFlag), "ZFlag");
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Assert.That(_context.GetPstateFlag(PState.NFlag), Is.EqualTo(_unicornEmu.NegativeFlag), "NFlag");
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});
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Assert.That((int)GetFpscr() & (int)fpsrMask, Is.EqualTo(_unicornEmu.Fpscr & (int)fpsrMask), "Fpscr");
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if (_usingMemory)
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{
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byte[] mem = _memory.GetSpan(DataBaseAddress, (int)Size).ToArray();
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byte[] unicornMem = _unicornEmu.MemoryRead(DataBaseAddress, Size);
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Assert.That(mem, Is.EqualTo(unicornMem), "Data");
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}
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}
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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);
|
|
}
|
|
}
|
|
} |