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loader: support ps5 SELF and validate ELF signatures (#157)

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Co-authored-by: anes <anesrachedi@outlook.fr>
This commit is contained in:
anesr5
2026-07-15 00:31:16 +02:00
committed by GitHub
parent 290f5fd3d7
commit 2a9a261913
1 changed files with 19 additions and 6 deletions
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25
src/SharpEmu.Core/Loader/SelfLoader.cs
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@@ -17,7 +17,9 @@ namespace SharpEmu.Core.Loader;
public sealed class SelfLoader : ISelfLoader
{
private static readonly SharpEmuLogger Log = SharpEmuLog.For("Loader");
private const uint SelfMagic = 0x4F153D1D;
private const uint ElfMagic = 0x7F454C46;
private const uint Ps4SelfMagic = 0x4F153D1D;
private const uint Ps5SelfMagic = 0x5414F5EE;
private const ulong SelfSegmentFlag = 0x800;
private const int PageSize = 0x1000;
private const ulong ImportStubBaseAddress = 0x0000_7000_0000_0000UL;
@@ -323,7 +325,8 @@ public sealed class SelfLoader : ISelfLoader
throw new InvalidDataException("Input image is too small to contain an ELF header.");
}
if (imageData.Length >= sizeof(uint) && BinaryPrimitives.ReadUInt32BigEndian(imageData[..sizeof(uint)]) == SelfMagic)
var magic = BinaryPrimitives.ReadUInt32BigEndian(imageData[..sizeof(uint)]);
if (magic is Ps4SelfMagic or Ps5SelfMagic)
{
var selfHeader = ReadUnmanaged<SelfHeader>(imageData, 0);
if (!selfHeader.HasKnownLayout || selfHeader.Unknown != 0x22)
@@ -345,6 +348,12 @@ public sealed class SelfLoader : ISelfLoader
return new LoadContext(IsSelf: true, elfOffset, selfHeader.FileSize, segments);
}
if (magic != ElfMagic)
{
throw new InvalidDataException(
$"Unsupported executable signature 0x{magic:X8}");
}
return new LoadContext(IsSelf: false, ElfOffset: 0, SelfFileSize: 0, Array.Empty<SelfSegment>());
}
@@ -2380,10 +2389,14 @@ public sealed class SelfLoader : ISelfLoader
public ulong FileSize => _fileSize;
public bool HasKnownLayout =>
_ident0 == 0x4F &&
_ident1 == 0x15 &&
_ident2 == 0x3D &&
_ident3 == 0x1D &&
((_ident0 == 0x4F &&
_ident1 == 0x15 &&
_ident2 == 0x3D &&
_ident3 == 0x1D) ||
(_ident0 == 0x54 &&
_ident1 == 0x14 &&
_ident2 == 0xF5 &&
_ident3 == 0xEE)) &&
_ident4 == 0x00 &&
_ident5 == 0x01 &&
_ident6 == 0x01 &&