4e430760b4
* Implement NPDM files parser (Currently not used in Ryujinx) * Add credits * Add Swap32 * Update Npdm.cs * Update ACI0.cs * Update ACID.cs * Update Npdm.cs * Update EndianSwap.cs * Update ACI0.cs * Update ACID.cs * Update KernelAccessControl.cs * Update NpdmInfo.cs * Update ServiceAccessControl.cs * Update NpdmInfo.cs
88 lines
3.2 KiB
C#
88 lines
3.2 KiB
C#
using Ryujinx.HLE.OsHle.Utilities;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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namespace Ryujinx.HLE.Loaders.Npdm
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{
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//https://github.com/SciresM/hactool/blob/master/npdm.c
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//https://github.com/SciresM/hactool/blob/master/npdm.h
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//http://switchbrew.org/index.php?title=NPDM
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class Npdm
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{
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public bool Is64Bits;
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public int AddressSpaceWidth;
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public byte MainThreadPriority;
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public byte DefaultCpuId;
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public int SystemResourceSize;
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public int ProcessCategory;
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public int MainEntrypointStackSize;
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public string TitleName;
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public byte[] ProductCode;
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public ulong FSPerms;
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private int ACI0Offset;
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private int ACI0Size;
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private int ACIDOffset;
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private int ACIDSize;
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public ACI0 ACI0;
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public ACID ACID;
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public const long NpdmMagic = 'M' << 0 | 'E' << 8 | 'T' << 16 | 'A' << 24;
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public Npdm(Stream NPDMStream)
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{
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BinaryReader Reader = new BinaryReader(NPDMStream);
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if (Reader.ReadInt32() != NpdmMagic)
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{
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throw new InvalidNpdmException("NPDM Stream doesn't contain NPDM file!");
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}
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Reader.ReadInt64(); // Padding / Unused
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// MmuFlags, bit0: 64-bit instructions, bits1-3: address space width (1=64-bit, 2=32-bit). Needs to be <= 0xF
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byte MmuFlags = Reader.ReadByte();
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Is64Bits = (MmuFlags & 1) != 0;
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AddressSpaceWidth = (MmuFlags >> 1) & 7;
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Reader.ReadByte(); // Padding / Unused
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MainThreadPriority = Reader.ReadByte(); // (0-63)
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DefaultCpuId = Reader.ReadByte();
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Reader.ReadInt32(); // Padding / Unused
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// System resource size (max size as of 5.x: 534773760). Unknown usage.
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SystemResourceSize = EndianSwap.Swap32(Reader.ReadInt32());
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// ProcessCategory (0: regular title, 1: kernel built-in). Should be 0 here.
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ProcessCategory = EndianSwap.Swap32(Reader.ReadInt32());
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// Main entrypoint stack size
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// (Should(?) be page-aligned. In non-nspwn scenarios, values of 0 can also rarely break in Horizon.
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// This might be something auto-adapting or a security feature of some sort ?)
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MainEntrypointStackSize = Reader.ReadInt32();
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byte[] TempTitleName = Reader.ReadBytes(0x10);
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TitleName = Encoding.UTF8.GetString(TempTitleName, 0, TempTitleName.Length).Trim('\0');
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ProductCode = Reader.ReadBytes(0x10); // Unknown value
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NPDMStream.Seek(0x30, SeekOrigin.Current); // Skip reserved bytes
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ACI0Offset = Reader.ReadInt32();
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ACI0Size = Reader.ReadInt32();
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ACIDOffset = Reader.ReadInt32();
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ACIDSize = Reader.ReadInt32();
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ACI0 = new ACI0(NPDMStream, ACI0Offset);
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ACID = new ACID(NPDMStream, ACIDOffset);
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FSPerms = ACI0.FSAccessHeader.PermissionsBitmask & ACID.FSAccessControl.PermissionsBitmask;
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}
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}
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}
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