shifathosn
/
sharpemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

CPU: scan final TLS access pattern offset (#414) 

Co-authored-by: Dafenx <196083014+Dafenxz0@users.noreply.github.com>
This commit is contained in:
Dafenx 2026-07-18 23:07:32 +02:00 committed by GitHub
parent cab001f265
commit 336286e588
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/SharpEmu.Core/Cpu/Native/JitStubs.cs
View File

@ -252,7 +252,7 @@ public static unsafe class JitStubs
var pattern = TlsAccessPattern;
var end = start + length - pattern.Length;
for (var ptr = start; ptr < end; ptr++)
for (var ptr = start; ptr <= end; ptr++)
{
if (MatchesPattern(ptr, pattern))
{

26
tests/SharpEmu.Libs.Tests/Cpu/JitStubsTests.cs Normal file
View File

@ -0,0 +1,26 @@
// Copyright (C) 2026 SharpEmu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
using SharpEmu.Core.Cpu.Native;
using Xunit;
namespace SharpEmu.Libs.Tests.Cpu;
public sealed unsafe class JitStubsTests
{
[Fact]
public void FindTlsAccessPatterns_IncludesLastValidOffset()
{
var pattern = JitStubs.TlsAccessPattern;
var code = new byte[pattern.Length + 3];
pattern.CopyTo(code.AsSpan(3));
fixed (byte* codePointer = code)
{
var matches = JitStubs.FindTlsAccessPatterns(codePointer, code.Length);
var match = Assert.Single(matches);
Assert.Equal((nint)(codePointer + 3), match);
}
}
}