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kernel: Implement SetMemoryPermission syscall (#2772)

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* kernel: Implement SetMemoryPermission syscall

This commit implement the SetMemoryPermission syscall accurately.
This also fix KMemoryPermission not being an unsigned 32 bits type and
add the "DontCare" bit (used by shared memory, currently unused in
Ryujinx)

* Update MemoryPermission mask

* Address gdkchan's comments

* Fix a nit

* Address gdkchan's comment
This commit is contained in:
Mary 2021-10-24 01:24:49 +02:00 • committed by GitHub
parent e7e65ccbc9
commit c94d47cc40
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6 changed files with 102 additions and 5 deletions
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32
Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
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@ -819,6 +819,38 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
return process.MemoryManager.SetHeapSize(size, out position);
}
public KernelResult SetMemoryPermission(ulong address, ulong size, KMemoryPermission permission)
{
if (!PageAligned(address))
{
return KernelResult.InvalidAddress;
}
if (!PageAligned(size) || size == 0)
{
return KernelResult.InvalidSize;
}
if (address + size <= address)
{
return KernelResult.InvalidMemState;
}
if (permission == KMemoryPermission.None || (permission | KMemoryPermission.Write) != KMemoryPermission.ReadAndWrite)
{
return KernelResult.InvalidPermission;
}
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (!currentProcess.MemoryManager.InsideAddrSpace(address, size))
{
return KernelResult.InvalidMemState;
}
return currentProcess.MemoryManager.SetMemoryPermission(address, size, permission);
}
public KernelResult SetMemoryAttribute(
ulong position,
ulong size,