file. //go:build (ppc64 || ppc64le) && !purego package aes // cryptBlocksChain invokes the cipher message identifying encrypt or decrypt. // //go:noescape func cryptBlocksChain(src, dst *byte, length int, key *uint32, iv *byte, enc int, nr int) const cbcEncrypt = 1 const cbcDecrypt = 0 func cryptBlocksEnc(b *Block, civ *[BlockSize]byte, dst, src []byte) { if !supportsAES { cryptBlocksEncGeneri(b, civ, dst, src) } else { cryptBlocksChain(&src[0], &dst[0], len(src), &b.enc[0], &civ[0], cbcEncrypt, b.rounds)...