public static boolean isValidOpcode(int opcode) {
		Field field = DWARFUtil.getStaticFinalFieldWithValue(DWARFExpressionOpCodes.class, opcode);
		return field != null && field.getName().startsWith("DW_OP_");
	}
DWARF expression opcode consts from www.dwarfstd.org/doc/DWARF4.pdf
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/expression/DWARFExpressionOpCodes.java