diff options
| author | gdkchan <gab.dark.100@gmail.com> | 2022-05-02 20:30:02 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-05-02 20:30:02 -0300 |
| commit | 95017b8c66f70406e926b278ecdd6d4ec0a93110 (patch) | |
| tree | 3fc8e9a515f9adda96cf0c9d6983a375045ba68c /Ryujinx.Memory/WindowsShared/WindowsApi.cs | |
| parent | 4a892fbdc9059504358ddf41c27576032e1ce414 (diff) | |
Support memory aliasing (#2954)1.1.110
* 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>
Diffstat (limited to 'Ryujinx.Memory/WindowsShared/WindowsApi.cs')
| -rw-r--r-- | Ryujinx.Memory/WindowsShared/WindowsApi.cs | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/Ryujinx.Memory/WindowsShared/WindowsApi.cs b/Ryujinx.Memory/WindowsShared/WindowsApi.cs new file mode 100644 index 00000000..297bd1ee --- /dev/null +++ b/Ryujinx.Memory/WindowsShared/WindowsApi.cs @@ -0,0 +1,93 @@ +using System; +using System.Runtime.InteropServices; + +namespace Ryujinx.Memory.WindowsShared +{ + static class WindowsApi + { + public static readonly IntPtr InvalidHandleValue = new IntPtr(-1); + public static readonly IntPtr CurrentProcessHandle = new IntPtr(-1); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern IntPtr VirtualAlloc( + IntPtr lpAddress, + IntPtr dwSize, + AllocationType flAllocationType, + MemoryProtection flProtect); + + [DllImport("KernelBase.dll", SetLastError = true)] + public static extern IntPtr VirtualAlloc2( + IntPtr process, + IntPtr lpAddress, + IntPtr dwSize, + AllocationType flAllocationType, + MemoryProtection flProtect, + IntPtr extendedParameters, + ulong parameterCount); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern bool VirtualProtect( + IntPtr lpAddress, + IntPtr dwSize, + MemoryProtection flNewProtect, + out MemoryProtection lpflOldProtect); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern bool VirtualFree(IntPtr lpAddress, IntPtr dwSize, AllocationType dwFreeType); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern IntPtr CreateFileMapping( + IntPtr hFile, + IntPtr lpFileMappingAttributes, + FileMapProtection flProtect, + uint dwMaximumSizeHigh, + uint dwMaximumSizeLow, + [MarshalAs(UnmanagedType.LPWStr)] string lpName); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern bool CloseHandle(IntPtr hObject); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern IntPtr MapViewOfFile( + IntPtr hFileMappingObject, + uint dwDesiredAccess, + uint dwFileOffsetHigh, + uint dwFileOffsetLow, + IntPtr dwNumberOfBytesToMap); + + [DllImport("KernelBase.dll", SetLastError = true)] + public static extern IntPtr MapViewOfFile3( + IntPtr hFileMappingObject, + IntPtr process, + IntPtr baseAddress, + ulong offset, + IntPtr dwNumberOfBytesToMap, + ulong allocationType, + MemoryProtection dwDesiredAccess, + IntPtr extendedParameters, + ulong parameterCount); + + [DllImport("kernel32.dll", SetLastError = true)] + public static extern bool UnmapViewOfFile(IntPtr lpBaseAddress); + + [DllImport("KernelBase.dll", SetLastError = true)] + public static extern bool UnmapViewOfFile2(IntPtr process, IntPtr lpBaseAddress, ulong unmapFlags); + + [DllImport("kernel32.dll")] + public static extern uint GetLastError(); + + public static MemoryProtection GetProtection(MemoryPermission permission) + { + return permission switch + { + MemoryPermission.None => MemoryProtection.NoAccess, + MemoryPermission.Read => MemoryProtection.ReadOnly, + MemoryPermission.ReadAndWrite => MemoryProtection.ReadWrite, + MemoryPermission.ReadAndExecute => MemoryProtection.ExecuteRead, + MemoryPermission.ReadWriteExecute => MemoryProtection.ExecuteReadWrite, + MemoryPermission.Execute => MemoryProtection.Execute, + _ => throw new MemoryProtectionException(permission) + }; + } + } +}
\ No newline at end of file |