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77 lines
2.2 KiB
C#
77 lines
2.2 KiB
C#
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using ARMeilleure.IntermediateRepresentation;
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using ARMeilleure.State;
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using ARMeilleure.Translation;
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using System;
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namespace ARMeilleure.Memory
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{
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static class MemoryManagerPal
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{
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private delegate V128 CompareExchange128(IntPtr address, V128 expected, V128 desired);
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private static CompareExchange128 _compareExchange128;
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private static object _lock;
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static MemoryManagerPal()
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{
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_lock = new object();
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}
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public static V128 AtomicLoad128(IntPtr address)
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{
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return GetCompareAndSwap128()(address, V128.Zero, V128.Zero);
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}
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public static V128 CompareAndSwap128(IntPtr address, V128 expected, V128 desired)
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{
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return GetCompareAndSwap128()(address, expected, desired);
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}
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private static CompareExchange128 GetCompareAndSwap128()
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{
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if (_compareExchange128 == null)
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{
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GenerateCompareAndSwap128();
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}
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return _compareExchange128;
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}
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private static void GenerateCompareAndSwap128()
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{
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lock (_lock)
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{
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if (_compareExchange128 != null)
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{
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return;
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}
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EmitterContext context = new EmitterContext();
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Operand address = context.LoadArgument(OperandType.I64, 0);
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Operand expected = context.LoadArgument(OperandType.V128, 1);
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Operand desired = context.LoadArgument(OperandType.V128, 2);
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Operand result = context.CompareAndSwap128(address, expected, desired);
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context.Return(result);
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ControlFlowGraph cfg = context.GetControlFlowGraph();
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OperandType[] argTypes = new OperandType[]
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{
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OperandType.I64,
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OperandType.V128,
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OperandType.V128
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};
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_compareExchange128 = Compiler.Compile<CompareExchange128>(
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cfg,
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argTypes,
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OperandType.V128,
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CompilerOptions.HighCq);
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}
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}
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}
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}
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