a33dc2f491
* Logger class changes only Now compile-time checking is possible with the help of Nullable Value types. * Misc formatting * Manual optimizations PrintGuestLog PrintGuestStackTrace Surfaceflinger DequeueBuffer * Reduce SendVibrationXX log level to Debug * Add Notice log level This level is always enabled and used to print system info, etc... Also, rewrite LogColor to switch expression as colors are static * Unify unhandled exception event handlers * Print enabled LogLevels during init * Re-add App Exit disposes in proper order nit: switch case spacing * Revert PrintGuestStackTrace to Info logs due to #1407 PrintGuestStackTrace is now called in some critical error handlers so revert to old behavior as KThread isn't part of Guest. * Batch replace Logger statements
98 lines
3.2 KiB
C#
98 lines
3.2 KiB
C#
using Ryujinx.Cpu;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using Ryujinx.Common.Logging;
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namespace Ryujinx.HLE.Loaders.Mods
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{
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public class MemPatch
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{
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readonly Dictionary<uint, byte[]> _patches = new Dictionary<uint, byte[]>();
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/// <summary>
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/// Adds a patch to specified offset. Overwrites if already present.
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/// </summary>
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/// <param name="offset">Memory offset</param>
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/// <param name="patch">The patch to add</param>
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public void Add(uint offset, byte[] patch)
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{
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_patches[offset] = patch;
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}
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/// <summary>
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/// Adds a patch in the form of an RLE (Fill mode).
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/// </summary>
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/// <param name="offset">Memory offset</param>
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/// <param name="length"The fill length</param>
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/// <param name="filler">The byte to fill</param>
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public void AddFill(uint offset, int length, byte filler)
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{
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// TODO: Can be made space efficient by changing `_patches`
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// Should suffice for now
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byte[] patch = new byte[length];
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patch.AsSpan().Fill(filler);
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_patches[offset] = patch;
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}
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/// <summary>
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/// Adds all patches from an existing MemPatch
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/// </summary>
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/// <param name="patches">The patches to add</param>
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public void AddFrom(MemPatch patches)
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{
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if (patches == null)
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{
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return;
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}
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foreach (var (patchOffset, patch) in patches._patches)
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{
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_patches[patchOffset] = patch;
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}
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}
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/// <summary>
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/// Applies all the patches added to this instance.
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/// </summary>
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/// <remarks>
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/// Patches are applied in ascending order of offsets to guarantee
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/// overlapping patches always apply the same way.
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/// </remarks>
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/// <param name="memory">The span of bytes to patch</param>
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/// <param name="maxSize">The maximum size of the slice of patchable memory</param>
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/// <param name="protectedOffset">A secondary offset used in special cases (NSO header)</param>
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/// <returns>Successful patches count</returns>
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public int Patch(Span<byte> memory, int protectedOffset = 0)
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{
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int count = 0;
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foreach (var (offset, patch) in _patches.OrderBy(item => item.Key))
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{
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int patchOffset = (int)offset;
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int patchSize = patch.Length;
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if (patchOffset < protectedOffset || patchOffset > memory.Length)
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{
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continue; // Add warning?
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}
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patchOffset -= protectedOffset;
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if (patchOffset + patchSize > memory.Length)
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{
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patchSize = memory.Length - (int)patchOffset; // Add warning?
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}
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Logger.Info?.Print(LogClass.ModLoader, $"Patching address offset {patchOffset:x} <= {BitConverter.ToString(patch).Replace('-', ' ')} len={patchSize}");
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patch.AsSpan().Slice(0, patchSize).CopyTo(memory.Slice(patchOffset, patchSize));
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count++;
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}
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return count;
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}
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}
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} |