REG_POISON
#define POISONED_REG(n) ((((unsigned long)REG_POISON) << 48) | ((n) << 32) | \
(((unsigned long)REG_POISON) << 16) | (n))
"lis " __stringify(n) "," __stringify(REG_POISON) ";" \
"oris " __stringify(n) "," __stringify(n) "," __stringify(REG_POISON) ";" \