mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-23 06:55:48 +00:00
305f06eb71
* 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
No EOL
2 KiB
C#
76 lines
No EOL
2 KiB
C#
using Ryujinx.Memory;
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Ryujinx.Cpu
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{
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public static class MemoryHelper
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{
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public static void FillWithZeros(IVirtualMemoryManager memory, ulong position, int size)
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{
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int size8 = size & ~(8 - 1);
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for (int offs = 0; offs < size8; offs += 8)
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{
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memory.Write<long>(position + (ulong)offs, 0);
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}
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for (int offs = size8; offs < (size - size8); offs++)
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{
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memory.Write<byte>(position + (ulong)offs, 0);
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}
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}
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public unsafe static T Read<T>(IVirtualMemoryManager memory, ulong position) where T : struct
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{
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long size = Marshal.SizeOf<T>();
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byte[] data = new byte[size];
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memory.Read(position, data);
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fixed (byte* ptr = data)
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{
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return Marshal.PtrToStructure<T>((IntPtr)ptr);
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}
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}
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public unsafe static ulong Write<T>(IVirtualMemoryManager memory, ulong position, T value) where T : struct
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{
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long size = Marshal.SizeOf<T>();
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byte[] data = new byte[size];
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fixed (byte* ptr = data)
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{
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Marshal.StructureToPtr<T>(value, (IntPtr)ptr, false);
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}
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memory.Write(position, data);
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return (ulong)size;
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}
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public static string ReadAsciiString(IVirtualMemoryManager memory, ulong position, long maxSize = -1)
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{
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using (MemoryStream ms = new MemoryStream())
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{
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for (long offs = 0; offs < maxSize || maxSize == -1; offs++)
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{
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byte value = memory.Read<byte>(position + (ulong)offs);
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if (value == 0)
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{
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break;
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}
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ms.WriteByte(value);
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}
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return Encoding.ASCII.GetString(ms.ToArray());
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}
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}
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}
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} |