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https://github.com/Ryujinx/Ryujinx.git
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00579927e4
* Initial implementation of KProcess * Some improvements to the memory manager, implement back guest stack trace printing * Better GetInfo implementation, improve checking in some places with information from process capabilities * Allow the cpu to read/write from the correct memory locations for accesses crossing a page boundary * Change long -> ulong for address/size on memory related methods to avoid unnecessary casts * Attempt at implementing ldr:ro with new KProcess * Allow BSS with size 0 on ldr:ro * Add checking for memory block slab heap usage, return errors if full, exit gracefully * Use KMemoryBlockSize const from KMemoryManager * Allow all methods to read from non-contiguous locations * Fix for TransactParcelAuto * Address PR feedback, additionally fix some small issues related to the KIP loader and implement SVCs GetProcessId, GetProcessList, GetSystemInfo, CreatePort and ManageNamedPort * Fix wrong check for source pages count from page list on MapPhysicalMemory * Fix some issues with UnloadNro on ldr:ro
68 lines
2.0 KiB
C#
68 lines
2.0 KiB
C#
using Ryujinx.Common;
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namespace Ryujinx.HLE.HOS.Kernel
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{
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class KSharedMemory
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{
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private KPageList PageList;
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private long OwnerPid;
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private MemoryPermission OwnerPermission;
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private MemoryPermission UserPermission;
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public KSharedMemory(
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KPageList PageList,
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long OwnerPid,
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MemoryPermission OwnerPermission,
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MemoryPermission UserPermission)
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{
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this.PageList = PageList;
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this.OwnerPid = OwnerPid;
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this.OwnerPermission = OwnerPermission;
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this.UserPermission = UserPermission;
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}
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public KernelResult MapIntoProcess(
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KMemoryManager MemoryManager,
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ulong Address,
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ulong Size,
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KProcess Process,
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MemoryPermission Permission)
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{
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ulong PagesCountRounded = BitUtils.DivRoundUp(Size, KMemoryManager.PageSize);
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if (PageList.GetPagesCount() != PagesCountRounded)
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{
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return KernelResult.InvalidSize;
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}
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MemoryPermission ExpectedPermission = Process.Pid == OwnerPid
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? OwnerPermission
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: UserPermission;
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if (Permission != ExpectedPermission)
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{
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return KernelResult.InvalidPermission;
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}
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return MemoryManager.MapPages(Address, PageList, MemoryState.SharedMemory, Permission);
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}
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public KernelResult UnmapFromProcess(
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KMemoryManager MemoryManager,
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ulong Address,
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ulong Size,
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KProcess Process)
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{
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ulong PagesCountRounded = BitUtils.DivRoundUp(Size, KMemoryManager.PageSize);
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if (PageList.GetPagesCount() != PagesCountRounded)
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{
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return KernelResult.InvalidSize;
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}
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return MemoryManager.UnmapPages(Address, PageList, MemoryState.SharedMemory);
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}
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}
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} |