readcpu.c:757:38: warning: The result of the left shift is undefined because the right operand is negative [core.UndefinedBinaryOperatorResult]
  757 |             code = (code & ~smsk) | (srcreg << table68k[opcode].spos);
      |                                             ^  ~~~~~~~~~~~~~~~~~~~~~
readcpu.c:758:38: warning: The result of the left shift is undefined because the right operand is negative [core.UndefinedBinaryOperatorResult]
  758 |             code = (code & ~dmsk) | (dstreg << table68k[opcode].dpos);
      |                                             ^  ~~~~~~~~~~~~~~~~~~~~~
6 warnings generated.