mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-24 16:45:47 +00:00
15d1cc806b
* Move kernel state from Horizon to KernelContext * Merge syscalls partial classes, split 32 and 64-bit variants * Sort usings
71 lines
No EOL
2.2 KiB
C#
71 lines
No EOL
2.2 KiB
C#
using Ryujinx.Common;
|
|
using Ryujinx.HLE.HOS.Kernel.Common;
|
|
using Ryujinx.HLE.HOS.Kernel.Process;
|
|
|
|
namespace Ryujinx.HLE.HOS.Kernel.Memory
|
|
{
|
|
class KSharedMemory : KAutoObject
|
|
{
|
|
private readonly KPageList _pageList;
|
|
|
|
private readonly long _ownerPid;
|
|
|
|
private readonly MemoryPermission _ownerPermission;
|
|
private readonly MemoryPermission _userPermission;
|
|
|
|
public KSharedMemory(
|
|
KernelContext context,
|
|
KPageList pageList,
|
|
long ownerPid,
|
|
MemoryPermission ownerPermission,
|
|
MemoryPermission userPermission) : base(context)
|
|
{
|
|
_pageList = pageList;
|
|
_ownerPid = ownerPid;
|
|
_ownerPermission = ownerPermission;
|
|
_userPermission = userPermission;
|
|
}
|
|
|
|
public KernelResult MapIntoProcess(
|
|
KMemoryManager memoryManager,
|
|
ulong address,
|
|
ulong size,
|
|
KProcess process,
|
|
MemoryPermission permission)
|
|
{
|
|
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
|
|
|
|
if (_pageList.GetPagesCount() != pagesCountRounded)
|
|
{
|
|
return KernelResult.InvalidSize;
|
|
}
|
|
|
|
MemoryPermission expectedPermission = process.Pid == _ownerPid
|
|
? _ownerPermission
|
|
: _userPermission;
|
|
|
|
if (permission != expectedPermission)
|
|
{
|
|
return KernelResult.InvalidPermission;
|
|
}
|
|
|
|
return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission);
|
|
}
|
|
|
|
public KernelResult UnmapFromProcess(
|
|
KMemoryManager memoryManager,
|
|
ulong address,
|
|
ulong size,
|
|
KProcess process)
|
|
{
|
|
ulong pagesCountRounded = BitUtils.DivRoundUp(size, KMemoryManager.PageSize);
|
|
|
|
if (_pageList.GetPagesCount() != pagesCountRounded)
|
|
{
|
|
return KernelResult.InvalidSize;
|
|
}
|
|
|
|
return memoryManager.UnmapPages(address, _pageList, MemoryState.SharedMemory);
|
|
}
|
|
}
|
|
} |