public const short IMAGE_REL_MIPS_PAIR = 0x0025; // This relocation is only valid when it immediately follows a REFHI or SECRELHI relocation. Its SymbolTableIndex contains a displacement and not an index into the symbol table.
public override void ApplyRelocation(Address baseOfImage, uint page, ImageReader rdr, RelocationDictionary relocations)
{
ushort fixup = rdr.ReadUInt16();
Address offset = baseOfImage + page + (fixup & 0x0FFFu);
var imgR = program.CreateImageReader(offset);
var imgW = program.CreateImageWriter(offset);
uint w = imgR.ReadUInt32();
int s;
switch (fixup >> 12)
{
case IMAGE_REL_MIPS_ABSOLUTE:
// Used for padding to 4-byte boundary, ignore.
break;
case IMAGE_REL_MIPS_REFWORD:
break;
case IMAGE_REL_MIPS_JMPADDR:
break;
case IMAGE_REL_MIPS_REFHI:
w = imgR.ReadUInt32();
//w += (fixup & 0x0FFFu);
//imgW.WriteUInt32(w);
s = rdr.ReadInt16();
w = (uint)(w + s);
// w points to something.
break;
case IMAGE_REL_MIPS_REFLO:
// w points to something.
break;
default:
dcSvc.Warn(
dcSvc.CreateAddressNavigator(program, offset),
string.Format(
"Unsupported MIPS PE fixup type: {0:X}",
fixup >> 12));
break;
}
}
/// <summary>
/// Reads the ELF header.
/// </summary>
/// <returns></returns>
private Elf32_Ehdr ReadElfHeaderStart()
{
var rdr = new ImageReader(RawImage, 0);
var h = new Elf32_Ehdr();
h.e_ident = rdr.ReadBeUInt32();
h.e_class = rdr.ReadByte();
h.endianness = rdr.ReadByte();
h.version = rdr.ReadByte();
h.osAbi = rdr.ReadByte();
rdr.Seek(8); // 8 bytes of padding.
// Now that we know the endianness, read the remaining fields in endian mode.
rdr = CreateImageReader(h.endianness, rdr.Offset);
h.e_type = rdr.ReadInt16();
h.e_machine = rdr.ReadInt16();
h.e_version = rdr.ReadInt32();
h.e_entry = rdr.ReadUInt32();
h.e_phoff = rdr.ReadUInt32();
h.e_shoff = rdr.ReadUInt32();
h.e_flags = rdr.ReadInt32();
h.e_ehsize = rdr.ReadInt16();
h.e_phentsize = rdr.ReadInt16();
h.e_phnum = rdr.ReadInt16();
h.e_shentsize = rdr.ReadInt16();
h.e_shnum = rdr.ReadInt16();
h.e_shstrndx = rdr.ReadInt16();
Dump("e_type: {0}", h.e_type);
Dump("e_machine: {0}", (MachineType) h.e_machine);
Dump("e_version: {0}", h.e_version);
Dump("e_entry: {0:X}", h.e_entry);
Dump("e_phoff: {0:X}", h.e_phoff);
Dump("e_shoff: {0:X}", h.e_shoff);
Dump("e_flags: {0:X}", h.e_flags);
Dump("e_ehsize: {0}", h.e_ehsize);
Dump("e_phentsize: {0}", h.e_phentsize);
Dump("e_phnum: {0}", h.e_phnum);
Dump("e_shentsize: {0}", h.e_shentsize);
Dump("e_shnum: {0}", h.e_shnum);
Dump("e_shstrndx: {0}", h.e_shstrndx);
return h;
}