103 lines
3.9 KiB
C#
103 lines
3.9 KiB
C#
using System.Runtime.InteropServices;
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using System.Runtime.Versioning;
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namespace Ryujinx.Memory.WindowsShared
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{
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[SupportedOSPlatform("windows")]
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static partial class WindowsApi
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{
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public static readonly nint InvalidHandleValue = new(-1);
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public static readonly nint CurrentProcessHandle = new(-1);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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public static partial nint VirtualAlloc(
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nint lpAddress,
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nint dwSize,
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AllocationType flAllocationType,
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MemoryProtection flProtect);
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[LibraryImport("KernelBase.dll", SetLastError = true)]
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public static partial nint VirtualAlloc2(
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nint process,
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nint lpAddress,
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nint dwSize,
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AllocationType flAllocationType,
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MemoryProtection flProtect,
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nint extendedParameters,
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ulong parameterCount);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial bool VirtualProtect(
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nint lpAddress,
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nint dwSize,
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MemoryProtection flNewProtect,
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out MemoryProtection lpflOldProtect);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial bool VirtualFree(nint lpAddress, nint dwSize, AllocationType dwFreeType);
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[LibraryImport("kernel32.dll", SetLastError = true, EntryPoint = "CreateFileMappingW")]
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public static partial nint CreateFileMapping(
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nint hFile,
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nint lpFileMappingAttributes,
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FileMapProtection flProtect,
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uint dwMaximumSizeHigh,
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uint dwMaximumSizeLow,
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[MarshalAs(UnmanagedType.LPWStr)] string lpName);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial bool CloseHandle(nint hObject);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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public static partial nint MapViewOfFile(
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nint hFileMappingObject,
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uint dwDesiredAccess,
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uint dwFileOffsetHigh,
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uint dwFileOffsetLow,
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nint dwNumberOfBytesToMap);
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[LibraryImport("KernelBase.dll", SetLastError = true)]
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public static partial nint MapViewOfFile3(
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nint hFileMappingObject,
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nint process,
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nint baseAddress,
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ulong offset,
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nint dwNumberOfBytesToMap,
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ulong allocationType,
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MemoryProtection dwDesiredAccess,
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nint extendedParameters,
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ulong parameterCount);
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[LibraryImport("kernel32.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial bool UnmapViewOfFile(nint lpBaseAddress);
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[LibraryImport("KernelBase.dll", SetLastError = true)]
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[return: MarshalAs(UnmanagedType.Bool)]
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public static partial bool UnmapViewOfFile2(nint process, nint lpBaseAddress, ulong unmapFlags);
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[LibraryImport("kernel32.dll")]
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public static partial uint GetLastError();
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[LibraryImport("kernel32.dll")]
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public static partial int GetCurrentThreadId();
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public static MemoryProtection GetProtection(MemoryPermission permission)
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{
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return permission switch
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{
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MemoryPermission.None => MemoryProtection.NoAccess,
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MemoryPermission.Read => MemoryProtection.ReadOnly,
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MemoryPermission.ReadAndWrite => MemoryProtection.ReadWrite,
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MemoryPermission.ReadAndExecute => MemoryProtection.ExecuteRead,
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MemoryPermission.ReadWriteExecute => MemoryProtection.ExecuteReadWrite,
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MemoryPermission.Execute => MemoryProtection.Execute,
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_ => throw new MemoryProtectionException(permission),
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};
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}
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}
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}
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