// Hand-optimized TASM baseline: os.neptune.locks.symmetric
//
// 5-field preimage lock: divine lock_hash, divine preimage (5 fields),
// hash, assert matches, read kernel hash.
os_neptune_locks_symmetric__main:
divine 5
divine 5
push 0
push 0
push 0
push 0
push 0
hash
assert_vector
pop 5
read_io 5
pop 5
return