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-rw-r--r--arch/x86/crypto/twofish-avx-x86_64-asm_64.S48
1 files changed, 47 insertions, 1 deletions
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
index 8d3e113b2c95..05058134c443 100644
--- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
@@ -4,7 +4,7 @@
* Copyright (C) 2012 Johannes Goetzfried
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
- * Copyright © 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
+ * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -33,6 +33,8 @@
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
+.Lxts_gf128mul_and_shl1_mask:
+ .byte 0x87, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
.text
@@ -408,3 +410,47 @@ ENTRY(twofish_ctr_8way)
ret;
ENDPROC(twofish_ctr_8way)
+
+ENTRY(twofish_xts_enc_8way)
+ /* input:
+ * %rdi: ctx, CTX
+ * %rsi: dst
+ * %rdx: src
+ * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
+ */
+
+ movq %rsi, %r11;
+
+ /* regs <= src, dst <= IVs, regs <= regs xor IVs */
+ load_xts_8way(%rcx, %rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2,
+ RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask);
+
+ call __twofish_enc_blk8;
+
+ /* dst <= regs xor IVs(in dst) */
+ store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
+
+ ret;
+ENDPROC(twofish_xts_enc_8way)
+
+ENTRY(twofish_xts_dec_8way)
+ /* input:
+ * %rdi: ctx, CTX
+ * %rsi: dst
+ * %rdx: src
+ * %rcx: iv (t ⊕ αⁿ ∈ GF(2¹²⁸))
+ */
+
+ movq %rsi, %r11;
+
+ /* regs <= src, dst <= IVs, regs <= regs xor IVs */
+ load_xts_8way(%rcx, %rdx, %rsi, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2,
+ RX0, RX1, RY0, .Lxts_gf128mul_and_shl1_mask);
+
+ call __twofish_dec_blk8;
+
+ /* dst <= regs xor IVs(in dst) */
+ store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
+
+ ret;
+ENDPROC(twofish_xts_dec_8way)