Function sys_sha_buffer 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn sys_sha_buffer(
    out_state: *mut [u32; 8],
    in_state: *const [u32; 8],
    buf: *const u8,
    count: u32,
)

Safety

out_state, in_state, and buf must be aligned and dereferenceable.