@Override
	public long getSymbolValue(ElfSymbol symbol) {
		if ("__gnu_local_gp".equals(symbol.getNameAsString())) {
			return getAdjustedGPValue(); // TODO: need to verify this case still
		}
		return super.getSymbolValue(symbol);
	}
Get the GP0 value (from .reginfo and generated symbol)
@return adjusted GP0 value or -1 if _mips_gp0_value symbol not defined.
Ghidra/Processors/MIPS/src/main/java/ghidra/app/util/bin/format/elf/relocation/MIPS_ElfRelocationContext.java