RyuKen/Ryujinx.HLE/HOS/Kernel/Memory/SharedMemoryStorage.cs
gdkchan 86fd0643c2
Implement support for page sizes > 4KB (#4252)
* Implement support for page sizes > 4KB

* Check and work around more alignment issues

* Was not meant to change this

* Use MemoryBlock.GetPageSize() value for signal handler code

* Do not take the path for private allocations if host supports 4KB pages

* Add Flags attribute on MemoryMapFlags

* Fix dirty region size with 16kb pages

Would accidentally report a size that was too high (generally 16k instead of 4k, uploading 4x as much data)

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
2023-01-17 05:13:24 +01:00

49 lines
1.4 KiB
C#

using System;
namespace Ryujinx.HLE.HOS.Kernel.Memory
{
class SharedMemoryStorage
{
private readonly KernelContext _context;
private readonly KPageList _pageList;
private readonly ulong _size;
public SharedMemoryStorage(KernelContext context, KPageList pageList)
{
_context = context;
_pageList = pageList;
_size = pageList.GetPagesCount() * KPageTableBase.PageSize;
foreach (KPageNode pageNode in pageList)
{
ulong address = pageNode.Address - DramMemoryMap.DramBase;
ulong size = pageNode.PagesCount * KPageTableBase.PageSize;
context.CommitMemory(address, size);
}
}
public void ZeroFill()
{
for (ulong offset = 0; offset < _size; offset += sizeof(ulong))
{
GetRef<ulong>(offset) = 0;
}
}
public ref T GetRef<T>(ulong offset) where T : unmanaged
{
if (_pageList.Nodes.Count == 1)
{
ulong address = _pageList.Nodes.First.Value.Address - DramMemoryMap.DramBase;
return ref _context.Memory.GetRef<T>(address + offset);
}
throw new NotImplementedException("Non-contiguous shared memory is not yet supported.");
}
public KPageList GetPageList()
{
return _pageList;
}
}
}