mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-08-19 15:18:43 +02:00
* Make all title id instances unsigned * Replace address and size with ulong instead of signed types Long overdue change. Also change some logics here and there to optimize with the new memory manager. * Address Ac_K's comments * Remove uneeded cast all around * Fixes some others misalignment
76 lines
2 KiB
C#
76 lines
2 KiB
C#
using Ryujinx.Memory;
|
|
using System;
|
|
using System.IO;
|
|
using System.Runtime.InteropServices;
|
|
using System.Text;
|
|
|
|
namespace Ryujinx.Cpu
|
|
{
|
|
public static class MemoryHelper
|
|
{
|
|
public static void FillWithZeros(IVirtualMemoryManager memory, ulong position, int size)
|
|
{
|
|
int size8 = size & ~(8 - 1);
|
|
|
|
for (int offs = 0; offs < size8; offs += 8)
|
|
{
|
|
memory.Write<long>(position + (ulong)offs, 0);
|
|
}
|
|
|
|
for (int offs = size8; offs < (size - size8); offs++)
|
|
{
|
|
memory.Write<byte>(position + (ulong)offs, 0);
|
|
}
|
|
}
|
|
|
|
public unsafe static T Read<T>(IVirtualMemoryManager memory, ulong position) where T : struct
|
|
{
|
|
long size = Marshal.SizeOf<T>();
|
|
|
|
byte[] data = new byte[size];
|
|
|
|
memory.Read(position, data);
|
|
|
|
fixed (byte* ptr = data)
|
|
{
|
|
return Marshal.PtrToStructure<T>((IntPtr)ptr);
|
|
}
|
|
}
|
|
|
|
public unsafe static ulong Write<T>(IVirtualMemoryManager memory, ulong position, T value) where T : struct
|
|
{
|
|
long size = Marshal.SizeOf<T>();
|
|
|
|
byte[] data = new byte[size];
|
|
|
|
fixed (byte* ptr = data)
|
|
{
|
|
Marshal.StructureToPtr<T>(value, (IntPtr)ptr, false);
|
|
}
|
|
|
|
memory.Write(position, data);
|
|
|
|
return (ulong)size;
|
|
}
|
|
|
|
public static string ReadAsciiString(IVirtualMemoryManager memory, ulong position, long maxSize = -1)
|
|
{
|
|
using (MemoryStream ms = new MemoryStream())
|
|
{
|
|
for (long offs = 0; offs < maxSize || maxSize == -1; offs++)
|
|
{
|
|
byte value = memory.Read<byte>(position + (ulong)offs);
|
|
|
|
if (value == 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
ms.WriteByte(value);
|
|
}
|
|
|
|
return Encoding.ASCII.GetString(ms.ToArray());
|
|
}
|
|
}
|
|
}
|
|
} |