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
71 lines
1.9 KiB
C#
71 lines
1.9 KiB
C#
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 ChocolArm64.Memory
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{
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public static class MemoryHelper
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{
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public static void FillWithZeros(MemoryManager memory, long 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.WriteInt64(position + 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.WriteByte(position + offs, 0);
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}
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}
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public unsafe static T Read<T>(MemoryManager memory, long position) where T : struct
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{
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long size = Marshal.SizeOf<T>();
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byte[] data = memory.ReadBytes(position, size);
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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 void Write<T>(MemoryManager memory, long 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.WriteBytes(position, data);
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}
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public static string ReadAsciiString(MemoryManager memory, long 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 = (byte)memory.ReadByte(position + 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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} |