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Refactor SVC handler (#540)

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* Refactor SVC handler

* Get rid of KernelErr

* Split kernel code files into multiple folders
This commit is contained in:
gdkchan 2018-12-18 03:33:36 -02:00 • committed by GitHub
parent 2534a7f10c
commit 0039bb6394
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105 changed files with 1894 additions and 1982 deletions
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Ryujinx.HLE/HOS/Kernel/Process/HleProcessDebugger.cs Normal file
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using ChocolArm64.Memory;
using ChocolArm64.State;
using Ryujinx.Common.Logging;
using Ryujinx.HLE.HOS.Diagnostics.Demangler;
using Ryujinx.HLE.HOS.Kernel.Memory;
using Ryujinx.HLE.Loaders.Elf;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace Ryujinx.HLE.HOS.Kernel.Process
{
class HleProcessDebugger
{
private const int Mod0 = 'M' << 0 | 'O' << 8 | 'D' << 16 | '0' << 24;
private KProcess _owner;
private class Image
{
public long BaseAddress { get; private set; }
public ElfSymbol[] Symbols { get; private set; }
public Image(long baseAddress, ElfSymbol[] symbols)
{
BaseAddress = baseAddress;
Symbols = symbols;
}
}
private List<Image> _images;
private int _loaded;
public HleProcessDebugger(KProcess owner)
{
_owner = owner;
_images = new List<Image>();
}
public void PrintGuestStackTrace(CpuThreadState threadState)
{
EnsureLoaded();
StringBuilder trace = new StringBuilder();
trace.AppendLine("Guest stack trace:");
void AppendTrace(long address)
{
Image image = GetImage(address, out int imageIndex);
if (image == null || !TryGetSubName(image, address, out string subName))
{
subName = $"Sub{address:x16}";
}
else if (subName.StartsWith("_Z"))
{
subName = Demangler.Parse(subName);
}
if (image != null)
{
long offset = address - image.BaseAddress;
string imageName = GetGuessedNsoNameFromIndex(imageIndex);
string imageNameAndOffset = $"[{_owner.Name}] {imageName}:0x{offset:x8}";
trace.AppendLine($" {imageNameAndOffset} {subName}");
}
else
{
trace.AppendLine($" [{_owner.Name}] ??? {subName}");
}
}
long framePointer = (long)threadState.X29;
while (framePointer != 0)
{
if ((framePointer & 7) != 0 ||
!_owner.CpuMemory.IsMapped(framePointer) ||
!_owner.CpuMemory.IsMapped(framePointer + 8))
{
break;
}
//Note: This is the return address, we need to subtract one instruction
//worth of bytes to get the branch instruction address.
AppendTrace(_owner.CpuMemory.ReadInt64(framePointer + 8) - 4);
framePointer = _owner.CpuMemory.ReadInt64(framePointer);
}
Logger.PrintInfo(LogClass.Cpu, trace.ToString());
}
private bool TryGetSubName(Image image, long address, out string name)
{
address -= image.BaseAddress;
int left = 0;
int right = image.Symbols.Length - 1;
while (left <= right)
{
int size = right - left;
int middle = left + (size >> 1);
ElfSymbol symbol = image.Symbols[middle];
long endAddr = symbol.Value + symbol.Size;
if ((ulong)address >= (ulong)symbol.Value && (ulong)address < (ulong)endAddr)
{
name = symbol.Name;
return true;
}
if ((ulong)address < (ulong)symbol.Value)
{
right = middle - 1;
}
else
{
left = middle + 1;
}
}
name = null;
return false;
}
private Image GetImage(long address, out int index)
{
lock (_images)
{
for (index = _images.Count - 1; index >= 0; index--)
{
if ((ulong)address >= (ulong)_images[index].BaseAddress)
{
return _images[index];
}
}
}
return null;
}
private string GetGuessedNsoNameFromIndex(int index)
{
if ((uint)index > 11)
{
return "???";
}
if (index == 0)
{
return "rtld";
}
else if (index == 1)
{
return "main";
}
else if (index == GetImagesCount() - 1)
{
return "sdk";
}
else
{
return "subsdk" + (index - 2);
}
}
private int GetImagesCount()
{
lock (_images)
{
return _images.Count;
}
}
private void EnsureLoaded()
{
if (Interlocked.CompareExchange(ref _loaded, 1, 0) == 0)
{
ScanMemoryForTextSegments();
}
}
private void ScanMemoryForTextSegments()
{
ulong oldAddress = 0;
ulong address = 0;
while (address >= oldAddress)
{
KMemoryInfo info = _owner.MemoryManager.QueryMemory(address);
if (info.State == MemoryState.Reserved)
{
break;
}
if (info.State == MemoryState.CodeStatic && info.Permission == MemoryPermission.ReadAndExecute)
{
LoadMod0Symbols(_owner.CpuMemory, (long)info.Address);
}
oldAddress = address;
address = info.Address + info.Size;
}
}
private void LoadMod0Symbols(MemoryManager memory, long textOffset)
{
long mod0Offset = textOffset + memory.ReadUInt32(textOffset + 4);
if (mod0Offset < textOffset || !memory.IsMapped(mod0Offset) || (mod0Offset & 3) != 0)
{
return;
}
Dictionary<ElfDynamicTag, long> dynamic = new Dictionary<ElfDynamicTag, long>();
int mod0Magic = memory.ReadInt32(mod0Offset + 0x0);
if (mod0Magic != Mod0)
{
return;
}
long dynamicOffset = memory.ReadInt32(mod0Offset + 0x4) + mod0Offset;
long bssStartOffset = memory.ReadInt32(mod0Offset + 0x8) + mod0Offset;
long bssEndOffset = memory.ReadInt32(mod0Offset + 0xc) + mod0Offset;
long ehHdrStartOffset = memory.ReadInt32(mod0Offset + 0x10) + mod0Offset;
long ehHdrEndOffset = memory.ReadInt32(mod0Offset + 0x14) + mod0Offset;
long modObjOffset = memory.ReadInt32(mod0Offset + 0x18) + mod0Offset;
while (true)
{
long tagVal = memory.ReadInt64(dynamicOffset + 0);
long value = memory.ReadInt64(dynamicOffset + 8);
dynamicOffset += 0x10;
ElfDynamicTag tag = (ElfDynamicTag)tagVal;
if (tag == ElfDynamicTag.DT_NULL)
{
break;
}
dynamic[tag] = value;
}
if (!dynamic.TryGetValue(ElfDynamicTag.DT_STRTAB, out long strTab) ||
!dynamic.TryGetValue(ElfDynamicTag.DT_SYMTAB, out long symTab) ||
!dynamic.TryGetValue(ElfDynamicTag.DT_SYMENT, out long symEntSize))
{
return;
}
long strTblAddr = textOffset + strTab;
long symTblAddr = textOffset + symTab;
List<ElfSymbol> symbols = new List<ElfSymbol>();
while ((ulong)symTblAddr < (ulong)strTblAddr)
{
ElfSymbol sym = GetSymbol(memory, symTblAddr, strTblAddr);
symbols.Add(sym);
symTblAddr += symEntSize;
}
lock (_images)
{
_images.Add(new Image(textOffset, symbols.OrderBy(x => x.Value).ToArray()));
}
}
private ElfSymbol GetSymbol(MemoryManager memory, long address, long strTblAddr)
{
int nameIndex = memory.ReadInt32(address + 0);
int info = memory.ReadByte (address + 4);
int other = memory.ReadByte (address + 5);
int shIdx = memory.ReadInt16(address + 6);
long value = memory.ReadInt64(address + 8);
long size = memory.ReadInt64(address + 16);
string name = string.Empty;
for (int chr; (chr = memory.ReadByte(strTblAddr + nameIndex++)) != 0;)
{
name += (char)chr;
}
return new ElfSymbol(name, info, other, shIdx, value, size);
}
}
}