//public Section addSection(String name, Section.Flags flags, Section.Alignment align)
//{
// Section sec = new Section(name, flags, align);
// sections.Add(sec);
// sec.secNum = sections.Count;
// secNames[name] = sec;
// return sec;
//}
public CoffSymbol findSymbol(String name)
{
CoffSymbol sym = null;
if (symNames.ContainsKey(name))
{
sym = symNames[name];
}
return(sym);
}
public static void loadRelocations(BinaryIn source, CoffSection sec, Win32Obj objfile)
{
source.seek(sec.relocTblPos);
for (int i = 0; i < sec.relocTblCount; i++)
{
uint addr = source.getFour();
int symidx = (int)source.getFour();
uint reloctype = source.getTwo();
CoffRelocation.Reloctype reltype = CoffRelocation.Reloctype.NONE;
switch (reloctype)
{
case 06:
reltype = CoffRelocation.Reloctype.ABSOLUTE; //IMAGE_REL_I386_DIR32
break;
case 07:
reltype = CoffRelocation.Reloctype.RVA; //IMAGE_REL_I386_DIR32NB
break;
case 11:
reltype = CoffRelocation.Reloctype.SECREL32; //IMAGE_REL_I386_SECREL
break;
case 20:
reltype = CoffRelocation.Reloctype.RELATIVE; //IMAGE_REL_I386_REL32
break;
default:
break;
}
CoffSymbol sym = objfile.symbols[symidx];
CoffRelocation reloc = new CoffRelocation(addr - sec.memPos, sym, reltype);
sec.relocations.Add(reloc);
}
}
public CoffRelocation(uint _addr, CoffSymbol _sym, Reloctype _type)
{
address = _addr;
symbol = _sym;
type = _type;
}
public static void loadSymbols(BinaryIn source, uint count, byte[] strtbl, Win32Obj objfile)
{
for (int i = 0; i < count;)
{
//get short name or pos in string tbl
uint nameloc = source.getPos();
uint namezeros = source.getFour();
String name = "";
if (namezeros == 0) //if first 4 bytes = 0, 2nd 4 bytes = ofs into str tbl
{
int namepos = (int)source.getFour();
name = readString(strtbl, namepos);
}
else
{
source.seek(nameloc);
name = source.getAsciiString(8);
}
//read rest of sym entry
uint val = source.getFour();
uint secval = source.getTwo();
uint type = source.getTwo();
CoffStorageClass storage = (CoffStorageClass)source.getOne();
uint aux = source.getOne();
CoffSymbol sym = null;
CoffSymbol.SYMBIND bind = CoffSymbol.SYMBIND.EXTERNAL;
uint size = 0;
uint addr = 0;
CoffSection sec = null;
switch (storage)
{
case CoffStorageClass.IMAGE_SYM_CLASS_EXTERNAL:
if (secval == 0)
{
if (val == 0)
{
bind = CoffSymbol.SYMBIND.EXTERNAL;
}
else
{
bind = CoffSymbol.SYMBIND.COMMON;
size = val;
}
}
else
{
bind = CoffSymbol.SYMBIND.GLOBAL;
sec = objfile.sections[(int)secval - 1];
if (val >= sec.memPos)
{
addr = val - sec.memPos;
}
}
sym = new CoffSymbol(name);
sym.bind = bind;
sym.typ = CoffSymbol.SYMTYPE.FUNCTION;
sym.section = sec;
sym.ofs = addr;
sym.size = size;
break;
case CoffStorageClass.IMAGE_SYM_CLASS_STATIC:
case CoffStorageClass.IMAGE_SYM_CLASS_LABEL:
if (secval != 0xffff)
{
sec = objfile.sections[(int)secval - 1];
if (val >= sec.memPos)
{
addr = val - sec.memPos;
}
sym = new CoffSymbol(name);
sym.bind = CoffSymbol.SYMBIND.LOCAL;
sym.typ = CoffSymbol.SYMTYPE.FUNCTION;
sym.section = sec;
sym.ofs = addr;
sym.size = size;
}
break;
case CoffStorageClass.IMAGE_SYM_CLASS_SECTION:
sec = objfile.sections[(int)secval - 1];
sym = new CoffSymbol(name);
sym.bind = CoffSymbol.SYMBIND.LOCAL;
sym.typ = CoffSymbol.SYMTYPE.FUNCTION;
sym.section = sec;
sym.ofs = addr;
sym.size = size;
break;
case CoffStorageClass.IMAGE_SYM_CLASS_FUNCTION:
case CoffStorageClass.IMAGE_SYM_CLASS_FILE:
break;
default:
break;
}
i++;
objfile.symbols.Add(sym);
if (sym != null)
{
objfile.symNames[sym.name] = sym;
}
//skip any aux sym entries
for (int j = 0; j < aux; j++)
{
source.skip(CoffSymbol.SYMTBLENTRYSIZE);
objfile.symbols.Add(null);
i++;
}
}
}
