private ElfSymbol GetSymbol(IMemoryManager 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));
}
private void LoadMod0Symbols(IMemoryManager 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;
// TODO: Elf32.
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()));
}
}