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using Ryujinx.Cpu;
using Ryujinx.HLE.HOS.Kernel.Process;
using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE.HOS.Kernel.Common
{
static class KernelTransfer
{
public static bool UserToKernel<T>(out T value, ulong address) where T : unmanaged
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (currentProcess.CpuMemory.IsRangeMapped(address, (ulong)Unsafe.SizeOf<T>()))
{
value = currentProcess.CpuMemory.Read<T>(address);
return true;
}
value = default;
return false;
}
public static bool UserToKernelArray<T>(ulong address, Span<T> values) where T : unmanaged
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
Span<byte> data = MemoryMarshal.Cast<T, byte>(values);
if (currentProcess.CpuMemory.IsRangeMapped(address, (ulong)data.Length))
{
currentProcess.CpuMemory.Read(address, data);
return true;
}
return false;
}
public static bool UserToKernelString(out string value, ulong address, uint size)
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (currentProcess.CpuMemory.IsRangeMapped(address, size))
{
value = MemoryHelper.ReadAsciiString(currentProcess.CpuMemory, address, size);
return true;
}
value = null;
return false;
}
public static bool KernelToUser<T>(ulong address, T value) where T: unmanaged
{
KProcess currentProcess = KernelStatic.GetCurrentProcess();
if (currentProcess.CpuMemory.IsRangeMapped(address, (ulong)Unsafe.SizeOf<T>()))
{
currentProcess.CpuMemory.Write(address, value);
return true;
}
return false;
}
}
}
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