1 files changed, 82 insertions, 0 deletions
diff --git a/src/crypto/aes/cipher_ppc64le.go b/src/crypto/aes/cipher_ppc64le.go
new file mode 100644
index 0000000..b788ea7
--- /dev/null
+++ b/src/crypto/aes/cipher_ppc64le.go
@@ -0,0 +1,82 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package aes
+
+import (
+	"crypto/cipher"
+	"crypto/internal/subtle"
+)
+
+// defined in asm_ppc64le.s
+
+//go:noescape
+func setEncryptKeyAsm(key *byte, keylen int, enc *uint32) int
+
+//go:noescape
+func setDecryptKeyAsm(key *byte, keylen int, dec *uint32) int
+
+//go:noescape
+func doEncryptKeyAsm(key *byte, keylen int, dec *uint32) int
+
+//go:noescape
+func encryptBlockAsm(dst, src *byte, enc *uint32)
+
+//go:noescape
+func decryptBlockAsm(dst, src *byte, dec *uint32)
+
+type aesCipherAsm struct {
+	aesCipher
+}
+
+func newCipher(key []byte) (cipher.Block, error) {
+	n := 64 // size is fixed for all and round value is stored inside it too
+	c := aesCipherAsm{aesCipher{make([]uint32, n), make([]uint32, n)}}
+	k := len(key)
+
+	ret := 0
+	ret += setEncryptKeyAsm(&key[0], k*8, &c.enc[0])
+	ret += setDecryptKeyAsm(&key[0], k*8, &c.dec[0])
+
+	if ret > 0 {
+		return nil, KeySizeError(k)
+	}
+
+	return &c, nil
+}
+
+func (c *aesCipherAsm) BlockSize() int { return BlockSize }
+
+func (c *aesCipherAsm) Encrypt(dst, src []byte) {
+	if len(src) < BlockSize {
+		panic("crypto/aes: input not full block")
+	}
+	if len(dst) < BlockSize {
+		panic("crypto/aes: output not full block")
+	}
+	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
+		panic("crypto/aes: invalid buffer overlap")
+	}
+	encryptBlockAsm(&dst[0], &src[0], &c.enc[0])
+}
+
+func (c *aesCipherAsm) Decrypt(dst, src []byte) {
+	if len(src) < BlockSize {
+		panic("crypto/aes: input not full block")
+	}
+	if len(dst) < BlockSize {
+		panic("crypto/aes: output not full block")
+	}
+	if subtle.InexactOverlap(dst[:BlockSize], src[:BlockSize]) {
+		panic("crypto/aes: invalid buffer overlap")
+	}
+	decryptBlockAsm(&dst[0], &src[0], &c.dec[0])
+}
+
+// expandKey is used by BenchmarkExpand to ensure that the asm implementation
+// of key expansion is used for the benchmark when it is available.
+func expandKey(key []byte, enc, dec []uint32) {
+	setEncryptKeyAsm(&key[0], len(key)*8, &enc[0])
+	setDecryptKeyAsm(&key[0], len(key)*8, &dec[0])
+}