TRAMPOLINE_HASH_BITS
#define TRAMPOLINE_TABLE_SIZE (1 << TRAMPOLINE_HASH_BITS)
head = &trampoline_key_table[hash_64(key, TRAMPOLINE_HASH_BITS)];
head = &trampoline_ip_table[hash_64(tr->ip, TRAMPOLINE_HASH_BITS)];
head_ip = &trampoline_ip_table[hash_64(ip, TRAMPOLINE_HASH_BITS)];