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044ab52578
CAST5 and CAST6 both use same lookup tables, which can be moved shared module 'cast_common'. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
559 lines
13 KiB
ArmAsm
559 lines
13 KiB
ArmAsm
/*
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* Cast5 Cipher 16-way parallel algorithm (AVX/x86_64)
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*
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* Copyright (C) 2012 Johannes Goetzfried
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* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
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*
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* Copyright © 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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*/
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.file "cast5-avx-x86_64-asm_64.S"
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.extern cast_s1
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.extern cast_s2
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.extern cast_s3
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.extern cast_s4
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/* structure of crypto context */
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#define km 0
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#define kr (16*4)
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#define rr ((16*4)+16)
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/* s-boxes */
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#define s1 cast_s1
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#define s2 cast_s2
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#define s3 cast_s3
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#define s4 cast_s4
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/**********************************************************************
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16-way AVX cast5
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**********************************************************************/
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#define CTX %rdi
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#define RL1 %xmm0
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#define RR1 %xmm1
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#define RL2 %xmm2
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#define RR2 %xmm3
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#define RL3 %xmm4
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#define RR3 %xmm5
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#define RL4 %xmm6
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#define RR4 %xmm7
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#define RX %xmm8
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#define RKM %xmm9
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#define RKR %xmm10
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#define RKRF %xmm11
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#define RKRR %xmm12
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#define R32 %xmm13
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#define R1ST %xmm14
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#define RTMP %xmm15
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#define RID1 %rbp
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#define RID1d %ebp
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#define RID2 %rsi
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#define RID2d %esi
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#define RGI1 %rdx
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#define RGI1bl %dl
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#define RGI1bh %dh
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#define RGI2 %rcx
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#define RGI2bl %cl
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#define RGI2bh %ch
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#define RGI3 %rax
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#define RGI3bl %al
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#define RGI3bh %ah
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#define RGI4 %rbx
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#define RGI4bl %bl
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#define RGI4bh %bh
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#define RFS1 %r8
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#define RFS1d %r8d
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#define RFS2 %r9
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#define RFS2d %r9d
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#define RFS3 %r10
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#define RFS3d %r10d
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#define lookup_32bit(src, dst, op1, op2, op3, interleave_op, il_reg) \
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movzbl src ## bh, RID1d; \
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movzbl src ## bl, RID2d; \
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shrq $16, src; \
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movl s1(, RID1, 4), dst ## d; \
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op1 s2(, RID2, 4), dst ## d; \
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movzbl src ## bh, RID1d; \
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movzbl src ## bl, RID2d; \
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interleave_op(il_reg); \
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op2 s3(, RID1, 4), dst ## d; \
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op3 s4(, RID2, 4), dst ## d;
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#define dummy(d) /* do nothing */
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#define shr_next(reg) \
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shrq $16, reg;
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#define F_head(a, x, gi1, gi2, op0) \
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op0 a, RKM, x; \
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vpslld RKRF, x, RTMP; \
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vpsrld RKRR, x, x; \
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vpor RTMP, x, x; \
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\
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vmovq x, gi1; \
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vpextrq $1, x, gi2;
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#define F_tail(a, x, gi1, gi2, op1, op2, op3) \
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lookup_32bit(##gi1, RFS1, op1, op2, op3, shr_next, ##gi1); \
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lookup_32bit(##gi2, RFS3, op1, op2, op3, shr_next, ##gi2); \
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\
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lookup_32bit(##gi1, RFS2, op1, op2, op3, dummy, none); \
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shlq $32, RFS2; \
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orq RFS1, RFS2; \
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lookup_32bit(##gi2, RFS1, op1, op2, op3, dummy, none); \
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shlq $32, RFS1; \
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orq RFS1, RFS3; \
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\
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vmovq RFS2, x; \
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vpinsrq $1, RFS3, x, x;
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#define F_2(a1, b1, a2, b2, op0, op1, op2, op3) \
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F_head(b1, RX, RGI1, RGI2, op0); \
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F_head(b2, RX, RGI3, RGI4, op0); \
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\
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F_tail(b1, RX, RGI1, RGI2, op1, op2, op3); \
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F_tail(b2, RTMP, RGI3, RGI4, op1, op2, op3); \
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\
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vpxor a1, RX, a1; \
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vpxor a2, RTMP, a2;
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#define F1_2(a1, b1, a2, b2) \
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F_2(a1, b1, a2, b2, vpaddd, xorl, subl, addl)
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#define F2_2(a1, b1, a2, b2) \
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F_2(a1, b1, a2, b2, vpxor, subl, addl, xorl)
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#define F3_2(a1, b1, a2, b2) \
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F_2(a1, b1, a2, b2, vpsubd, addl, xorl, subl)
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#define subround(a1, b1, a2, b2, f) \
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F ## f ## _2(a1, b1, a2, b2);
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#define round(l, r, n, f) \
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vbroadcastss (km+(4*n))(CTX), RKM; \
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vpand R1ST, RKR, RKRF; \
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vpsubq RKRF, R32, RKRR; \
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vpsrldq $1, RKR, RKR; \
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subround(l ## 1, r ## 1, l ## 2, r ## 2, f); \
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subround(l ## 3, r ## 3, l ## 4, r ## 4, f);
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#define enc_preload_rkr() \
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vbroadcastss .L16_mask, RKR; \
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/* add 16-bit rotation to key rotations (mod 32) */ \
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vpxor kr(CTX), RKR, RKR;
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#define dec_preload_rkr() \
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vbroadcastss .L16_mask, RKR; \
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/* add 16-bit rotation to key rotations (mod 32) */ \
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vpxor kr(CTX), RKR, RKR; \
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vpshufb .Lbswap128_mask, RKR, RKR;
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#define transpose_2x4(x0, x1, t0, t1) \
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vpunpckldq x1, x0, t0; \
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vpunpckhdq x1, x0, t1; \
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\
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vpunpcklqdq t1, t0, x0; \
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vpunpckhqdq t1, t0, x1;
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#define inpack_blocks(x0, x1, t0, t1, rmask) \
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vpshufb rmask, x0, x0; \
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vpshufb rmask, x1, x1; \
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\
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transpose_2x4(x0, x1, t0, t1)
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#define outunpack_blocks(x0, x1, t0, t1, rmask) \
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transpose_2x4(x0, x1, t0, t1) \
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\
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vpshufb rmask, x0, x0; \
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vpshufb rmask, x1, x1;
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.data
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.align 16
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.Lbswap_mask:
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.byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
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.Lbswap128_mask:
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.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
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.Lbswap_iv_mask:
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.byte 7, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0
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.L16_mask:
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.byte 16, 16, 16, 16
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.L32_mask:
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.byte 32, 0, 0, 0
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.Lfirst_mask:
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.byte 0x1f, 0, 0, 0
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.text
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.align 16
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.type __cast5_enc_blk16,@function;
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__cast5_enc_blk16:
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/* input:
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* %rdi: ctx, CTX
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* RL1: blocks 1 and 2
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* RR1: blocks 3 and 4
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* RL2: blocks 5 and 6
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* RR2: blocks 7 and 8
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* RL3: blocks 9 and 10
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* RR3: blocks 11 and 12
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* RL4: blocks 13 and 14
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* RR4: blocks 15 and 16
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* output:
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* RL1: encrypted blocks 1 and 2
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* RR1: encrypted blocks 3 and 4
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* RL2: encrypted blocks 5 and 6
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* RR2: encrypted blocks 7 and 8
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* RL3: encrypted blocks 9 and 10
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* RR3: encrypted blocks 11 and 12
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* RL4: encrypted blocks 13 and 14
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* RR4: encrypted blocks 15 and 16
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*/
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pushq %rbp;
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pushq %rbx;
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vmovdqa .Lbswap_mask, RKM;
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vmovd .Lfirst_mask, R1ST;
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vmovd .L32_mask, R32;
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enc_preload_rkr();
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inpack_blocks(RL1, RR1, RTMP, RX, RKM);
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inpack_blocks(RL2, RR2, RTMP, RX, RKM);
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inpack_blocks(RL3, RR3, RTMP, RX, RKM);
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inpack_blocks(RL4, RR4, RTMP, RX, RKM);
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round(RL, RR, 0, 1);
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round(RR, RL, 1, 2);
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round(RL, RR, 2, 3);
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round(RR, RL, 3, 1);
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round(RL, RR, 4, 2);
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round(RR, RL, 5, 3);
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round(RL, RR, 6, 1);
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round(RR, RL, 7, 2);
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round(RL, RR, 8, 3);
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round(RR, RL, 9, 1);
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round(RL, RR, 10, 2);
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round(RR, RL, 11, 3);
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movzbl rr(CTX), %eax;
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testl %eax, %eax;
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jnz __skip_enc;
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round(RL, RR, 12, 1);
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round(RR, RL, 13, 2);
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round(RL, RR, 14, 3);
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round(RR, RL, 15, 1);
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__skip_enc:
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popq %rbx;
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popq %rbp;
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vmovdqa .Lbswap_mask, RKM;
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outunpack_blocks(RR1, RL1, RTMP, RX, RKM);
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outunpack_blocks(RR2, RL2, RTMP, RX, RKM);
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outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
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outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
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ret;
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.align 16
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.type __cast5_dec_blk16,@function;
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__cast5_dec_blk16:
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/* input:
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* %rdi: ctx, CTX
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* RL1: encrypted blocks 1 and 2
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* RR1: encrypted blocks 3 and 4
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* RL2: encrypted blocks 5 and 6
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* RR2: encrypted blocks 7 and 8
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* RL3: encrypted blocks 9 and 10
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* RR3: encrypted blocks 11 and 12
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* RL4: encrypted blocks 13 and 14
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* RR4: encrypted blocks 15 and 16
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* output:
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* RL1: decrypted blocks 1 and 2
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* RR1: decrypted blocks 3 and 4
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* RL2: decrypted blocks 5 and 6
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* RR2: decrypted blocks 7 and 8
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* RL3: decrypted blocks 9 and 10
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* RR3: decrypted blocks 11 and 12
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* RL4: decrypted blocks 13 and 14
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* RR4: decrypted blocks 15 and 16
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*/
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pushq %rbp;
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pushq %rbx;
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vmovdqa .Lbswap_mask, RKM;
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vmovd .Lfirst_mask, R1ST;
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vmovd .L32_mask, R32;
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dec_preload_rkr();
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inpack_blocks(RL1, RR1, RTMP, RX, RKM);
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inpack_blocks(RL2, RR2, RTMP, RX, RKM);
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inpack_blocks(RL3, RR3, RTMP, RX, RKM);
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inpack_blocks(RL4, RR4, RTMP, RX, RKM);
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movzbl rr(CTX), %eax;
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testl %eax, %eax;
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jnz __skip_dec;
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round(RL, RR, 15, 1);
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round(RR, RL, 14, 3);
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round(RL, RR, 13, 2);
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round(RR, RL, 12, 1);
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__dec_tail:
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round(RL, RR, 11, 3);
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round(RR, RL, 10, 2);
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round(RL, RR, 9, 1);
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round(RR, RL, 8, 3);
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round(RL, RR, 7, 2);
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round(RR, RL, 6, 1);
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round(RL, RR, 5, 3);
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round(RR, RL, 4, 2);
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round(RL, RR, 3, 1);
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round(RR, RL, 2, 3);
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round(RL, RR, 1, 2);
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round(RR, RL, 0, 1);
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vmovdqa .Lbswap_mask, RKM;
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popq %rbx;
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popq %rbp;
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outunpack_blocks(RR1, RL1, RTMP, RX, RKM);
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outunpack_blocks(RR2, RL2, RTMP, RX, RKM);
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outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
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outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
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ret;
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__skip_dec:
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vpsrldq $4, RKR, RKR;
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jmp __dec_tail;
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.align 16
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.global cast5_ecb_enc_16way
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.type cast5_ecb_enc_16way,@function;
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cast5_ecb_enc_16way:
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/* input:
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* %rdi: ctx, CTX
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* %rsi: dst
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* %rdx: src
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*/
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movq %rsi, %r11;
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vmovdqu (0*4*4)(%rdx), RL1;
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vmovdqu (1*4*4)(%rdx), RR1;
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vmovdqu (2*4*4)(%rdx), RL2;
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vmovdqu (3*4*4)(%rdx), RR2;
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vmovdqu (4*4*4)(%rdx), RL3;
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vmovdqu (5*4*4)(%rdx), RR3;
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vmovdqu (6*4*4)(%rdx), RL4;
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vmovdqu (7*4*4)(%rdx), RR4;
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call __cast5_enc_blk16;
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vmovdqu RR1, (0*4*4)(%r11);
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vmovdqu RL1, (1*4*4)(%r11);
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vmovdqu RR2, (2*4*4)(%r11);
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vmovdqu RL2, (3*4*4)(%r11);
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vmovdqu RR3, (4*4*4)(%r11);
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vmovdqu RL3, (5*4*4)(%r11);
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vmovdqu RR4, (6*4*4)(%r11);
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vmovdqu RL4, (7*4*4)(%r11);
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ret;
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.align 16
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.global cast5_ecb_dec_16way
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.type cast5_ecb_dec_16way,@function;
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cast5_ecb_dec_16way:
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/* input:
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* %rdi: ctx, CTX
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* %rsi: dst
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* %rdx: src
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*/
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movq %rsi, %r11;
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vmovdqu (0*4*4)(%rdx), RL1;
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vmovdqu (1*4*4)(%rdx), RR1;
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vmovdqu (2*4*4)(%rdx), RL2;
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vmovdqu (3*4*4)(%rdx), RR2;
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vmovdqu (4*4*4)(%rdx), RL3;
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vmovdqu (5*4*4)(%rdx), RR3;
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vmovdqu (6*4*4)(%rdx), RL4;
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vmovdqu (7*4*4)(%rdx), RR4;
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call __cast5_dec_blk16;
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vmovdqu RR1, (0*4*4)(%r11);
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vmovdqu RL1, (1*4*4)(%r11);
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vmovdqu RR2, (2*4*4)(%r11);
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vmovdqu RL2, (3*4*4)(%r11);
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vmovdqu RR3, (4*4*4)(%r11);
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vmovdqu RL3, (5*4*4)(%r11);
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vmovdqu RR4, (6*4*4)(%r11);
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vmovdqu RL4, (7*4*4)(%r11);
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ret;
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.align 16
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.global cast5_cbc_dec_16way
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.type cast5_cbc_dec_16way,@function;
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cast5_cbc_dec_16way:
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/* input:
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* %rdi: ctx, CTX
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* %rsi: dst
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* %rdx: src
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*/
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pushq %r12;
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movq %rsi, %r11;
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movq %rdx, %r12;
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vmovdqu (0*16)(%rdx), RL1;
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vmovdqu (1*16)(%rdx), RR1;
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vmovdqu (2*16)(%rdx), RL2;
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vmovdqu (3*16)(%rdx), RR2;
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vmovdqu (4*16)(%rdx), RL3;
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vmovdqu (5*16)(%rdx), RR3;
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vmovdqu (6*16)(%rdx), RL4;
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vmovdqu (7*16)(%rdx), RR4;
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call __cast5_dec_blk16;
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/* xor with src */
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vmovq (%r12), RX;
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vpshufd $0x4f, RX, RX;
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vpxor RX, RR1, RR1;
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vpxor 0*16+8(%r12), RL1, RL1;
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vpxor 1*16+8(%r12), RR2, RR2;
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|
vpxor 2*16+8(%r12), RL2, RL2;
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|
vpxor 3*16+8(%r12), RR3, RR3;
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|
vpxor 4*16+8(%r12), RL3, RL3;
|
|
vpxor 5*16+8(%r12), RR4, RR4;
|
|
vpxor 6*16+8(%r12), RL4, RL4;
|
|
|
|
vmovdqu RR1, (0*16)(%r11);
|
|
vmovdqu RL1, (1*16)(%r11);
|
|
vmovdqu RR2, (2*16)(%r11);
|
|
vmovdqu RL2, (3*16)(%r11);
|
|
vmovdqu RR3, (4*16)(%r11);
|
|
vmovdqu RL3, (5*16)(%r11);
|
|
vmovdqu RR4, (6*16)(%r11);
|
|
vmovdqu RL4, (7*16)(%r11);
|
|
|
|
popq %r12;
|
|
|
|
ret;
|
|
|
|
.align 16
|
|
.global cast5_ctr_16way
|
|
.type cast5_ctr_16way,@function;
|
|
|
|
cast5_ctr_16way:
|
|
/* input:
|
|
* %rdi: ctx, CTX
|
|
* %rsi: dst
|
|
* %rdx: src
|
|
* %rcx: iv (big endian, 64bit)
|
|
*/
|
|
|
|
pushq %r12;
|
|
|
|
movq %rsi, %r11;
|
|
movq %rdx, %r12;
|
|
|
|
vpcmpeqd RTMP, RTMP, RTMP;
|
|
vpsrldq $8, RTMP, RTMP; /* low: -1, high: 0 */
|
|
|
|
vpcmpeqd RKR, RKR, RKR;
|
|
vpaddq RKR, RKR, RKR; /* low: -2, high: -2 */
|
|
vmovdqa .Lbswap_iv_mask, R1ST;
|
|
vmovdqa .Lbswap128_mask, RKM;
|
|
|
|
/* load IV and byteswap */
|
|
vmovq (%rcx), RX;
|
|
vpshufb R1ST, RX, RX;
|
|
|
|
/* construct IVs */
|
|
vpsubq RTMP, RX, RX; /* le: IV1, IV0 */
|
|
vpshufb RKM, RX, RL1; /* be: IV0, IV1 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RR1; /* be: IV2, IV3 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RL2; /* be: IV4, IV5 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RR2; /* be: IV6, IV7 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RL3; /* be: IV8, IV9 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RR3; /* be: IV10, IV11 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RL4; /* be: IV12, IV13 */
|
|
vpsubq RKR, RX, RX;
|
|
vpshufb RKM, RX, RR4; /* be: IV14, IV15 */
|
|
|
|
/* store last IV */
|
|
vpsubq RTMP, RX, RX; /* le: IV16, IV14 */
|
|
vpshufb R1ST, RX, RX; /* be: IV16, IV16 */
|
|
vmovq RX, (%rcx);
|
|
|
|
call __cast5_enc_blk16;
|
|
|
|
/* dst = src ^ iv */
|
|
vpxor (0*16)(%r12), RR1, RR1;
|
|
vpxor (1*16)(%r12), RL1, RL1;
|
|
vpxor (2*16)(%r12), RR2, RR2;
|
|
vpxor (3*16)(%r12), RL2, RL2;
|
|
vpxor (4*16)(%r12), RR3, RR3;
|
|
vpxor (5*16)(%r12), RL3, RL3;
|
|
vpxor (6*16)(%r12), RR4, RR4;
|
|
vpxor (7*16)(%r12), RL4, RL4;
|
|
vmovdqu RR1, (0*16)(%r11);
|
|
vmovdqu RL1, (1*16)(%r11);
|
|
vmovdqu RR2, (2*16)(%r11);
|
|
vmovdqu RL2, (3*16)(%r11);
|
|
vmovdqu RR3, (4*16)(%r11);
|
|
vmovdqu RL3, (5*16)(%r11);
|
|
vmovdqu RR4, (6*16)(%r11);
|
|
vmovdqu RL4, (7*16)(%r11);
|
|
|
|
popq %r12;
|
|
|
|
ret;
|