b59b8ac943
A couple of games have random crashing with the JIT Sparse Ftable changes, and it seems to have been caused by an insufficient int size returned by `AddressTableLevel#GetValue(ulong address)`. It was 32 bits (Int32), but the GiantBlock (which is the current address table impl) uses potentially 36 bits for the first level.
45 lines
1.7 KiB
C#
45 lines
1.7 KiB
C#
namespace ARMeilleure.Common
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{
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/// <summary>
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/// Represents a level in an <see cref="IAddressTable{TEntry}"/>.
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/// </summary>
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public readonly struct AddressTableLevel
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{
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/// <summary>
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/// Gets the index of the <see cref="Level"/> in the guest address.
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/// </summary>
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public int Index { get; }
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/// <summary>
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/// Gets the length of the <see cref="AddressTableLevel"/> in the guest address.
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/// </summary>
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public int Length { get; }
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/// <summary>
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/// Gets the mask which masks the bits used by the <see cref="AddressTableLevel"/>.
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/// </summary>
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public ulong Mask => ((1ul << Length) - 1) << Index;
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/// <summary>
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/// Initializes a new instance of the <see cref="AddressTableLevel"/> structure with the specified
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/// <paramref name="index"/> and <paramref name="length"/>.
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/// </summary>
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/// <param name="index">Index of the <see cref="AddressTableLevel"/></param>
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/// <param name="length">Length of the <see cref="AddressTableLevel"/></param>
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public AddressTableLevel(int index, int length)
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{
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(Index, Length) = (index, length);
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}
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/// <summary>
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/// Gets the value of the <see cref="AddressTableLevel"/> from the specified guest <paramref name="address"/>.
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/// </summary>
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/// <param name="address">Guest address</param>
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/// <returns>Value of the <see cref="AddressTableLevel"/> from the specified guest <paramref name="address"/></returns>
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public long GetValue(ulong address)
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{
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return (long)((address & Mask) >> Index);
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}
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}
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}
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