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using ChocolArm64.Memory;
using Ryujinx.HLE.HOS;
using Ryujinx.HLE.HOS.Kernel;
using Ryujinx.HLE.Loaders.Executables;
using Ryujinx.HLE.Utilities;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
namespace Ryujinx.HLE.Loaders
{
class Executable
{
private MemoryManager Memory;
private List<ElfDyn> Dynamic;
public ReadOnlyCollection<ElfSym> SymbolTable;
public string Name { get; private set; }
public string FilePath { get; private set; }
public long ImageBase { get; private set; }
public long ImageEnd { get; private set; }
private KMemoryManager MemoryManager;
public Executable(IExecutable Exe, KMemoryManager MemoryManager, MemoryManager Memory, long ImageBase)
{
Dynamic = new List<ElfDyn>();
FilePath = Exe.FilePath;
if (FilePath != null)
{
Name = Path.GetFileNameWithoutExtension(FilePath.Replace(Homebrew.TemporaryNroSuffix, ""));
}
this.Memory = Memory;
this.MemoryManager = MemoryManager;
this.ImageBase = ImageBase;
this.ImageEnd = ImageBase;
long TextPosition = ImageBase + (uint)Exe.TextOffset;
long ROPosition = ImageBase + (uint)Exe.ROOffset;
long DataPosition = ImageBase + (uint)Exe.DataOffset;
long TextSize = (uint)IntUtils.AlignUp(Exe.Text.Length, KMemoryManager.PageSize);
long ROSize = (uint)IntUtils.AlignUp(Exe.RO.Length, KMemoryManager.PageSize);
long DataSize = (uint)IntUtils.AlignUp(Exe.Data.Length, KMemoryManager.PageSize);
long BssSize = (uint)IntUtils.AlignUp(Exe.BssSize, KMemoryManager.PageSize);
long DataAndBssSize = BssSize + DataSize;
ImageEnd = DataPosition + DataAndBssSize;
if (Exe.SourceAddress == 0)
{
MemoryManager.HleMapProcessCode(TextPosition, TextSize + ROSize + DataAndBssSize);
MemoryManager.SetProcessMemoryPermission(ROPosition, ROSize, MemoryPermission.Read);
MemoryManager.SetProcessMemoryPermission(DataPosition, DataAndBssSize, MemoryPermission.ReadAndWrite);
Memory.WriteBytes(TextPosition, Exe.Text);
Memory.WriteBytes(ROPosition, Exe.RO);
Memory.WriteBytes(DataPosition, Exe.Data);
}
else
{
long Result = MemoryManager.MapProcessCodeMemory(TextPosition, Exe.SourceAddress, TextSize + ROSize + DataSize);
if (Result != 0)
{
throw new InvalidOperationException();
}
MemoryManager.SetProcessMemoryPermission(ROPosition, ROSize, MemoryPermission.Read);
MemoryManager.SetProcessMemoryPermission(DataPosition, DataSize, MemoryPermission.ReadAndWrite);
if (Exe.BssAddress != 0 && Exe.BssSize != 0)
{
Result = MemoryManager.MapProcessCodeMemory(DataPosition + DataSize, Exe.BssAddress, BssSize);
if (Result != 0)
{
throw new InvalidOperationException();
}
MemoryManager.SetProcessMemoryPermission(DataPosition + DataSize, BssSize, MemoryPermission.ReadAndWrite);
}
}
if (Exe.Mod0Offset == 0)
{
return;
}
long Mod0Offset = ImageBase + Exe.Mod0Offset;
int Mod0Magic = Memory.ReadInt32(Mod0Offset + 0x0);
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;
ElfDynTag Tag = (ElfDynTag)TagVal;
if (Tag == ElfDynTag.DT_NULL)
{
break;
}
Dynamic.Add(new ElfDyn(Tag, Value));
}
long StrTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_STRTAB);
long SymTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_SYMTAB);
long SymEntSize = GetFirstValue(ElfDynTag.DT_SYMENT);
List<ElfSym> Symbols = new List<ElfSym>();
while ((ulong)SymTblAddr < (ulong)StrTblAddr)
{
ElfSym Sym = GetSymbol(SymTblAddr, StrTblAddr);
Symbols.Add(Sym);
SymTblAddr += SymEntSize;
}
SymbolTable = Array.AsReadOnly(Symbols.OrderBy(x => x.Value).ToArray());
}
private ElfRel GetRelocation(long Position)
{
long Offset = Memory.ReadInt64(Position + 0);
long Info = Memory.ReadInt64(Position + 8);
long Addend = Memory.ReadInt64(Position + 16);
int RelType = (int)(Info >> 0);
int SymIdx = (int)(Info >> 32);
ElfSym Symbol = GetSymbol(SymIdx);
return new ElfRel(Offset, Addend, Symbol, (ElfRelType)RelType);
}
private ElfSym GetSymbol(int Index)
{
long StrTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_STRTAB);
long SymTblAddr = ImageBase + GetFirstValue(ElfDynTag.DT_SYMTAB);
long SymEntSize = GetFirstValue(ElfDynTag.DT_SYMENT);
long Position = SymTblAddr + Index * SymEntSize;
return GetSymbol(Position, StrTblAddr);
}
private ElfSym GetSymbol(long Position, long StrTblAddr)
{
int NameIndex = Memory.ReadInt32(Position + 0);
int Info = Memory.ReadByte(Position + 4);
int Other = Memory.ReadByte(Position + 5);
int SHIdx = Memory.ReadInt16(Position + 6);
long Value = Memory.ReadInt64(Position + 8);
long Size = Memory.ReadInt64(Position + 16);
string Name = string.Empty;
for (int Chr; (Chr = Memory.ReadByte(StrTblAddr + NameIndex++)) != 0;)
{
Name += (char)Chr;
}
return new ElfSym(Name, Info, Other, SHIdx, Value, Size);
}
private long GetFirstValue(ElfDynTag Tag)
{
foreach (ElfDyn Entry in Dynamic)
{
if (Entry.Tag == Tag)
{
return Entry.Value;
}
}
return 0;
}
}
}
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