forked from Mirror/Ryujinx
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>
93 lines
No EOL
3.5 KiB
C#
93 lines
No EOL
3.5 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Memory.WindowsShared
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{
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static class WindowsApi
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{
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public static readonly IntPtr InvalidHandleValue = new IntPtr(-1);
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public static readonly IntPtr CurrentProcessHandle = new IntPtr(-1);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern IntPtr VirtualAlloc(
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IntPtr lpAddress,
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IntPtr dwSize,
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AllocationType flAllocationType,
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MemoryProtection flProtect);
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[DllImport("KernelBase.dll", SetLastError = true)]
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public static extern IntPtr VirtualAlloc2(
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IntPtr process,
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IntPtr lpAddress,
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IntPtr dwSize,
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AllocationType flAllocationType,
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MemoryProtection flProtect,
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IntPtr extendedParameters,
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ulong parameterCount);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern bool VirtualProtect(
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IntPtr lpAddress,
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IntPtr dwSize,
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MemoryProtection flNewProtect,
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out MemoryProtection lpflOldProtect);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern bool VirtualFree(IntPtr lpAddress, IntPtr dwSize, AllocationType dwFreeType);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern IntPtr CreateFileMapping(
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IntPtr hFile,
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IntPtr 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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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern bool CloseHandle(IntPtr hObject);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern IntPtr MapViewOfFile(
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IntPtr hFileMappingObject,
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uint dwDesiredAccess,
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uint dwFileOffsetHigh,
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uint dwFileOffsetLow,
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IntPtr dwNumberOfBytesToMap);
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[DllImport("KernelBase.dll", SetLastError = true)]
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public static extern IntPtr MapViewOfFile3(
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IntPtr hFileMappingObject,
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IntPtr process,
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IntPtr baseAddress,
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ulong offset,
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IntPtr dwNumberOfBytesToMap,
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ulong allocationType,
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MemoryProtection dwDesiredAccess,
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IntPtr extendedParameters,
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ulong parameterCount);
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[DllImport("kernel32.dll", SetLastError = true)]
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public static extern bool UnmapViewOfFile(IntPtr lpBaseAddress);
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[DllImport("KernelBase.dll", SetLastError = true)]
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public static extern bool UnmapViewOfFile2(IntPtr process, IntPtr lpBaseAddress, ulong unmapFlags);
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[DllImport("kernel32.dll")]
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public static extern uint GetLastError();
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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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} |