0c87bf9ea4
* Refactor CPU interface * Use IExecutionContext interface on SVC handler, change how CPU interrupts invokes the handlers * Make CpuEngine take a ITickSource rather than returning one The previous implementation had the scenario where the CPU engine had to implement the tick source in mind, like for example, when we have a hypervisor and the game can read CNTPCT on the host directly. However given that we need to do conversion due to different frequencies anyway, it's not worth it. It's better to just let the user pass the tick source and redirect any reads to CNTPCT to the user tick source * XML docs for the public interfaces * PPTC invalidation due to NativeInterface function name changes * Fix build of the CPU tests * PR feedback
465 lines
14 KiB
C#
465 lines
14 KiB
C#
using Ryujinx.HLE.HOS.Diagnostics.Demangler;
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using Ryujinx.HLE.HOS.Kernel.Memory;
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using Ryujinx.HLE.HOS.Kernel.Threading;
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using Ryujinx.HLE.Loaders.Elf;
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using Ryujinx.Memory;
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using System.Collections.Generic;
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using System.Linq;
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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 ulong BaseAddress { get; }
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public ulong Size { get; }
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public ulong EndAddress => BaseAddress + Size;
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public ElfSymbol[] Symbols { get; }
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public Image(ulong baseAddress, ulong size, ElfSymbol[] symbols)
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{
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BaseAddress = baseAddress;
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Size = size;
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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(KThread thread)
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{
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EnsureLoaded();
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var context = thread.Context;
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StringBuilder trace = new StringBuilder();
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trace.AppendLine($"Process: {_owner.Name}, PID: {_owner.Pid}");
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void AppendTrace(ulong address)
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{
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if(AnalyzePointer(out PointerInfo info, address, thread))
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{
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trace.AppendLine($" 0x{address:x16}\t{info.ImageDisplay}\t{info.SubDisplay}");
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}
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else
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{
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trace.AppendLine($" 0x{address:x16}");
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}
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}
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if (context.IsAarch32)
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{
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ulong framePointer = 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.Read<uint>(framePointer + 4));
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framePointer = _owner.CpuMemory.Read<uint>(framePointer);
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}
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}
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else
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{
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ulong framePointer = 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.Read<ulong>(framePointer + 8));
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framePointer = _owner.CpuMemory.Read<ulong>(framePointer);
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}
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}
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return trace.ToString();
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}
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public string GetCpuRegisterPrintout(KThread thread)
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{
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EnsureLoaded();
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var context = thread.Context;
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StringBuilder sb = new StringBuilder();
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string GetReg(int x)
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{
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var v = x == 32 ? context.Pc : context.GetX(x);
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if (!AnalyzePointer(out PointerInfo info, v, thread))
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{
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return $"0x{v:x16}";
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}
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else
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{
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if (!string.IsNullOrEmpty(info.ImageName))
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{
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return $"0x{v:x16} ({info.ImageDisplay})\t=> {info.SubDisplay}";
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}
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else
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{
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return $"0x{v:x16} ({info.SpDisplay})";
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}
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}
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}
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for (int i = 0; i <= 28; i++)
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{
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sb.AppendLine($"\tX[{i:d2}]:\t{GetReg(i)}");
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}
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sb.AppendLine($"\tFP:\t{GetReg(29)}");
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sb.AppendLine($"\tLR:\t{GetReg(30)}");
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sb.AppendLine($"\tSP:\t{GetReg(31)}");
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sb.AppendLine($"\tPC:\t{GetReg(32)}");
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return sb.ToString();
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}
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private bool TryGetSubName(Image image, ulong address, out ElfSymbol symbol)
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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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symbol = image.Symbols[middle];
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ulong endAddr = symbol.Value + symbol.Size;
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if (address >= symbol.Value && address < endAddr)
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{
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return true;
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}
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if (address < 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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symbol = default;
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return false;
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}
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struct PointerInfo
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{
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public string ImageName;
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public string SubName;
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public ulong Offset;
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public ulong SubOffset;
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public string ImageDisplay => $"{ImageName}:0x{Offset:x4}";
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public string SubDisplay => SubOffset == 0 ? SubName : $"{SubName}:0x{SubOffset:x4}";
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public string SpDisplay => SubOffset == 0 ? "SP" : $"SP:-0x{SubOffset:x4}";
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}
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private bool AnalyzePointer(out PointerInfo info, ulong address, KThread thread)
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{
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if (AnalyzePointerFromImages(out info, address))
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{
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return true;
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}
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if (AnalyzePointerFromStack(out info, address, thread))
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{
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return true;
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}
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return false;
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}
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private bool AnalyzePointerFromImages(out PointerInfo info, ulong address)
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{
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info = default;
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Image image = GetImage(address, out int imageIndex);
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if (image == null)
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{
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// Value isn't a pointer to a known image...
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return false;
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}
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info.Offset = address - image.BaseAddress;
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// Try to find what this pointer is referring to
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if (TryGetSubName(image, address, out ElfSymbol symbol))
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{
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info.SubName = symbol.Name;
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// Demangle string if possible
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if (info.SubName.StartsWith("_Z"))
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{
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info.SubName = Demangler.Parse(info.SubName);
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}
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info.SubOffset = info.Offset - symbol.Value;
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}
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else
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{
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info.SubName = "";
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}
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info.ImageName = GetGuessedNsoNameFromIndex(imageIndex);
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return true;
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}
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private bool AnalyzePointerFromStack(out PointerInfo info, ulong address, KThread thread)
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{
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info = default;
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ulong sp = thread.Context.GetX(31);
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var memoryInfo = _owner.MemoryManager.QueryMemory(address);
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MemoryState memoryState = memoryInfo.State;
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if (!memoryState.HasFlag(MemoryState.Stack)) // Is this pointer within the stack?
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{
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return false;
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}
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info.SubOffset = address - sp;
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return true;
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}
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private Image GetImage(ulong 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 (address >= _images[index].BaseAddress && address < _images[index].EndAddress)
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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 == KMemoryPermission.ReadAndExecute)
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{
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LoadMod0Symbols(_owner.CpuMemory, info.Address, info.Size);
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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(IVirtualMemoryManager memory, ulong textOffset, ulong textSize)
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{
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ulong mod0Offset = textOffset + memory.Read<uint>(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, ulong> dynamic = new Dictionary<ElfDynamicTag, ulong>();
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int mod0Magic = memory.Read<int>(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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ulong dynamicOffset = memory.Read<uint>(mod0Offset + 0x4) + mod0Offset;
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ulong bssStartOffset = memory.Read<uint>(mod0Offset + 0x8) + mod0Offset;
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ulong bssEndOffset = memory.Read<uint>(mod0Offset + 0xc) + mod0Offset;
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ulong ehHdrStartOffset = memory.Read<uint>(mod0Offset + 0x10) + mod0Offset;
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ulong ehHdrEndOffset = memory.Read<uint>(mod0Offset + 0x14) + mod0Offset;
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ulong modObjOffset = memory.Read<uint>(mod0Offset + 0x18) + mod0Offset;
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bool isAArch32 = memory.Read<ulong>(dynamicOffset) > 0xFFFFFFFF || memory.Read<ulong>(dynamicOffset + 0x10) > 0xFFFFFFFF;
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while (true)
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{
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ulong tagVal;
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ulong value;
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if (isAArch32)
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{
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tagVal = memory.Read<uint>(dynamicOffset + 0);
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value = memory.Read<uint>(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.Read<ulong>(dynamicOffset + 0);
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value = memory.Read<ulong>(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 ulong strTab) ||
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!dynamic.TryGetValue(ElfDynamicTag.DT_SYMTAB, out ulong symTab) ||
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!dynamic.TryGetValue(ElfDynamicTag.DT_SYMENT, out ulong symEntSize))
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{
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return;
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}
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ulong strTblAddr = textOffset + strTab;
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ulong symTblAddr = textOffset + symTab;
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List<ElfSymbol> symbols = new List<ElfSymbol>();
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while (symTblAddr < 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, textSize, symbols.OrderBy(x => x.Value).ToArray()));
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}
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}
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private ElfSymbol GetSymbol64(IVirtualMemoryManager memory, ulong address, ulong strTblAddr)
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{
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ElfSymbol64 sym = memory.Read<ElfSymbol64>(address);
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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.Read<byte>(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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private ElfSymbol GetSymbol32(IVirtualMemoryManager memory, ulong address, ulong strTblAddr)
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{
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ElfSymbol32 sym = memory.Read<ElfSymbol32>(address);
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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.Read<byte>(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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