mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-12-30 15:11:21 -08:00
364 lines
11 KiB
C#
364 lines
11 KiB
C#
using ARMeilleure.Memory;
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using Ryujinx.Common;
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using Ryujinx.HLE.HOS.Diagnostics.Demangler;
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using Ryujinx.HLE.HOS.Kernel.Memory;
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using Ryujinx.HLE.Loaders.Elf;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Threading;
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namespace Ryujinx.HLE.HOS.Kernel.Process
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{
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class HleProcessDebugger
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{
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private const int Mod0 = 'M' << 0 | 'O' << 8 | 'D' << 16 | '0' << 24;
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private KProcess _owner;
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private class Image
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{
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public long BaseAddress { get; private set; }
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public ElfSymbol[] Symbols { get; private set; }
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public Image(long baseAddress, ElfSymbol[] symbols)
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{
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BaseAddress = baseAddress;
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Symbols = symbols;
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}
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}
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private List<Image> _images;
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private int _loaded;
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public HleProcessDebugger(KProcess owner)
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{
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_owner = owner;
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_images = new List<Image>();
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}
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public string GetGuestStackTrace(ARMeilleure.State.ExecutionContext context)
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{
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EnsureLoaded();
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StringBuilder trace = new StringBuilder();
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void AppendTrace(long address)
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{
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Image image = GetImage(address, out int imageIndex);
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if (image == null || !TryGetSubName(image, address, out string subName))
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{
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subName = $"Sub{address:x16}";
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}
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else if (subName.StartsWith("_Z"))
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{
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subName = Demangler.Parse(subName);
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}
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if (image != null)
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{
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long offset = address - image.BaseAddress;
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string imageName = GetGuessedNsoNameFromIndex(imageIndex);
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trace.AppendLine($" {imageName}:0x{offset:x8} {subName}");
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}
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else
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{
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trace.AppendLine($" ??? {subName}");
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}
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}
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trace.AppendLine($"Process: {_owner.Name}, PID: {_owner.Pid}");
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if (context.IsAarch32)
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{
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long framePointer = (long)context.GetX(11);
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while (framePointer != 0)
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{
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if ((framePointer & 3) != 0 ||
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!_owner.CpuMemory.IsMapped(framePointer) ||
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!_owner.CpuMemory.IsMapped(framePointer + 4))
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{
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break;
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}
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AppendTrace(_owner.CpuMemory.ReadInt32(framePointer + 4));
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framePointer = _owner.CpuMemory.ReadInt32(framePointer);
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}
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}
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else
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{
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long framePointer = (long)context.GetX(29);
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while (framePointer != 0)
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{
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if ((framePointer & 7) != 0 ||
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!_owner.CpuMemory.IsMapped(framePointer) ||
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!_owner.CpuMemory.IsMapped(framePointer + 8))
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{
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break;
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}
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AppendTrace(_owner.CpuMemory.ReadInt64(framePointer + 8));
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framePointer = _owner.CpuMemory.ReadInt64(framePointer);
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}
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}
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return trace.ToString();
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}
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private bool TryGetSubName(Image image, long address, out string name)
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{
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address -= image.BaseAddress;
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int left = 0;
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int right = image.Symbols.Length - 1;
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while (left <= right)
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{
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int size = right - left;
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int middle = left + (size >> 1);
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ElfSymbol symbol = image.Symbols[middle];
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ulong endAddr = symbol.Value + symbol.Size;
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if ((ulong)address >= symbol.Value && (ulong)address < endAddr)
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{
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name = symbol.Name;
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return true;
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}
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if ((ulong)address < (ulong)symbol.Value)
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{
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right = middle - 1;
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}
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else
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{
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left = middle + 1;
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}
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}
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name = null;
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return false;
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}
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private Image GetImage(long address, out int index)
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{
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lock (_images)
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{
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for (index = _images.Count - 1; index >= 0; index--)
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{
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if ((ulong)address >= (ulong)_images[index].BaseAddress)
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{
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return _images[index];
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}
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}
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}
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return null;
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}
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private string GetGuessedNsoNameFromIndex(int index)
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{
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if ((uint)index > 11)
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{
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return "???";
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}
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if (index == 0)
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{
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return "rtld";
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}
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else if (index == 1)
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{
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return "main";
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}
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else if (index == GetImagesCount() - 1)
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{
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return "sdk";
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}
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else
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{
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return "subsdk" + (index - 2);
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}
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}
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private int GetImagesCount()
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{
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lock (_images)
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{
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return _images.Count;
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}
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}
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private void EnsureLoaded()
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{
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if (Interlocked.CompareExchange(ref _loaded, 1, 0) == 0)
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{
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ScanMemoryForTextSegments();
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}
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}
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private void ScanMemoryForTextSegments()
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{
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ulong oldAddress = 0;
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ulong address = 0;
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while (address >= oldAddress)
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{
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KMemoryInfo info = _owner.MemoryManager.QueryMemory(address);
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if (info.State == MemoryState.Reserved)
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{
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break;
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}
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if (info.State == MemoryState.CodeStatic && info.Permission == MemoryPermission.ReadAndExecute)
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{
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LoadMod0Symbols(_owner.CpuMemory, (long)info.Address);
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}
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oldAddress = address;
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address = info.Address + info.Size;
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}
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}
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private void LoadMod0Symbols(MemoryManager memory, long textOffset)
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{
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long mod0Offset = textOffset + memory.ReadUInt32(textOffset + 4);
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if (mod0Offset < textOffset || !memory.IsMapped(mod0Offset) || (mod0Offset & 3) != 0)
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{
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return;
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}
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Dictionary<ElfDynamicTag, long> dynamic = new Dictionary<ElfDynamicTag, long>();
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int mod0Magic = memory.ReadInt32(mod0Offset + 0x0);
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if (mod0Magic != Mod0)
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{
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return;
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}
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long dynamicOffset = memory.ReadInt32(mod0Offset + 0x4) + mod0Offset;
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long bssStartOffset = memory.ReadInt32(mod0Offset + 0x8) + mod0Offset;
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long bssEndOffset = memory.ReadInt32(mod0Offset + 0xc) + mod0Offset;
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long ehHdrStartOffset = memory.ReadInt32(mod0Offset + 0x10) + mod0Offset;
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long ehHdrEndOffset = memory.ReadInt32(mod0Offset + 0x14) + mod0Offset;
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long modObjOffset = memory.ReadInt32(mod0Offset + 0x18) + mod0Offset;
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bool isAArch32 = memory.ReadUInt64(dynamicOffset) > 0xFFFFFFFF || memory.ReadUInt64(dynamicOffset + 0x10) > 0xFFFFFFFF;
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while (true)
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{
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long tagVal;
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long value;
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if (isAArch32)
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{
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tagVal = memory.ReadInt32(dynamicOffset + 0);
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value = memory.ReadInt32(dynamicOffset + 4);
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dynamicOffset += 0x8;
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}
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else
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{
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tagVal = memory.ReadInt64(dynamicOffset + 0);
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value = memory.ReadInt64(dynamicOffset + 8);
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dynamicOffset += 0x10;
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}
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ElfDynamicTag tag = (ElfDynamicTag)tagVal;
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if (tag == ElfDynamicTag.DT_NULL)
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{
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break;
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}
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dynamic[tag] = value;
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}
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if (!dynamic.TryGetValue(ElfDynamicTag.DT_STRTAB, out long strTab) ||
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!dynamic.TryGetValue(ElfDynamicTag.DT_SYMTAB, out long symTab) ||
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!dynamic.TryGetValue(ElfDynamicTag.DT_SYMENT, out long symEntSize))
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{
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return;
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}
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long strTblAddr = textOffset + strTab;
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long symTblAddr = textOffset + symTab;
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List<ElfSymbol> symbols = new List<ElfSymbol>();
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while ((ulong)symTblAddr < (ulong)strTblAddr)
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{
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ElfSymbol sym = isAArch32 ? GetSymbol32(memory, symTblAddr, strTblAddr) : GetSymbol64(memory, symTblAddr, strTblAddr);
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symbols.Add(sym);
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symTblAddr += symEntSize;
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}
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lock (_images)
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{
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_images.Add(new Image(textOffset, symbols.OrderBy(x => x.Value).ToArray()));
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}
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}
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private ElfSymbol GetSymbol64(MemoryManager memory, long address, long strTblAddr)
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{
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using (BinaryReader inputStream = new BinaryReader(new MemoryStream(memory.ReadBytes(address, Unsafe.SizeOf<ElfSymbol64>()))))
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{
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ElfSymbol64 sym = inputStream.ReadStruct<ElfSymbol64>();
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uint nameIndex = sym.NameOffset;
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string name = string.Empty;
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for (int chr; (chr = memory.ReadByte(strTblAddr + nameIndex++)) != 0;)
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{
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name += (char)chr;
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}
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return new ElfSymbol(name, sym.Info, sym.Other, sym.SectionIndex, sym.ValueAddress, sym.Size);
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}
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}
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private ElfSymbol GetSymbol32(MemoryManager memory, long address, long strTblAddr)
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{
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using (BinaryReader inputStream = new BinaryReader(new MemoryStream(memory.ReadBytes(address, Unsafe.SizeOf<ElfSymbol32>()))))
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{
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ElfSymbol32 sym = inputStream.ReadStruct<ElfSymbol32>();
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uint nameIndex = sym.NameOffset;
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string name = string.Empty;
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for (int chr; (chr = memory.ReadByte(strTblAddr + nameIndex++)) != 0;)
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{
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name += (char)chr;
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}
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return new ElfSymbol(name, sym.Info, sym.Other, sym.SectionIndex, sym.ValueAddress, sym.Size);
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}
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}
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}
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} |