323 lines
7.4 KiB
ArmAsm
323 lines
7.4 KiB
ArmAsm
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/*
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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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* 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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.text
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.extern cast5_s1
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.extern cast5_s2
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.extern cast5_s3
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.extern cast5_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 cast5_s1
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#define s2 cast5_s2
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#define s3 cast5_s3
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#define s4 cast5_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 RKRF %xmm10
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#define RKRR %xmm11
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#define RTMP %xmm12
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#define RMASK %xmm13
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#define R32 %xmm14
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#define RID1 %rax
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#define RID1b %al
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#define RID2 %rbx
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#define RID2b %bl
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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 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) \
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movb src ## bl, RID1b; \
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movb src ## bh, RID2b; \
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movl s1(, RID1, 4), dst ## d; \
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op1 s2(, RID2, 4), dst ## d; \
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shrq $16, src; \
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movb src ## bl, RID1b; \
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movb src ## bh, RID2b; \
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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 F(a, x, op0, op1, op2, op3) \
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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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vpshufb RMASK, x, x; \
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vmovq x, RGI1; \
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vpsrldq $8, x, x; \
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vmovq x, RGI2; \
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\
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lookup_32bit(RGI1, RFS1, op1, op2, op3); \
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shrq $16, RGI1; \
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lookup_32bit(RGI1, RFS2, op1, op2, op3); \
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shlq $32, RFS2; \
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orq RFS1, RFS2; \
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\
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lookup_32bit(RGI2, RFS1, op1, op2, op3); \
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shrq $16, RGI2; \
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lookup_32bit(RGI2, RFS3, op1, op2, op3); \
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shlq $32, RFS3; \
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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 F1(b, x) F(b, x, vpaddd, xorl, subl, addl)
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#define F2(b, x) F(b, x, vpxor, subl, addl, xorl)
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#define F3(b, x) F(b, x, vpsubd, addl, xorl, subl)
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#define subround(a, b, x, n, f) \
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F ## f(b, x); \
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vpxor a, x, a;
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#define round(l, r, n, f) \
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vbroadcastss (km+(4*n))(CTX), RKM; \
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vpinsrb $0, (kr+n)(CTX), RKRF, RKRF; \
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vpsubq RKRF, R32, RKRR; \
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subround(l ## 1, r ## 1, RX, n, f); \
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subround(l ## 2, r ## 2, RX, n, f); \
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subround(l ## 3, r ## 3, RX, n, f); \
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subround(l ## 4, r ## 4, RX, n, f);
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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(in, x0, x1, t0, t1) \
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vmovdqu (0*4*4)(in), x0; \
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vmovdqu (1*4*4)(in), x1; \
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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(out, x0, x1, t0, t1) \
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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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vmovdqu x0, (0*4*4)(out); \
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vmovdqu x1, (1*4*4)(out);
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#define outunpack_xor_blocks(out, x0, x1, t0, t1) \
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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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vpxor (0*4*4)(out), x0, x0; \
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vmovdqu x0, (0*4*4)(out); \
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vpxor (1*4*4)(out), x1, x1; \
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vmovdqu x1, (1*4*4)(out);
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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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.L32_mask:
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.byte 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ,0, 0, 0, 0, 0
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.align 16
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.global __cast5_enc_blk_16way
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.type __cast5_enc_blk_16way,@function;
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__cast5_enc_blk_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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* %rcx: bool, if true: xor output
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*/
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pushq %rbx;
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pushq %rcx;
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vmovdqu .Lbswap_mask, RMASK;
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vmovdqu .L32_mask, R32;
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vpxor RKRF, RKRF, RKRF;
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inpack_blocks(%rdx, RL1, RR1, RTMP, RX);
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leaq (2*4*4)(%rdx), %rax;
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inpack_blocks(%rax, RL2, RR2, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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inpack_blocks(%rax, RL3, RR3, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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inpack_blocks(%rax, RL4, RR4, RTMP, RX);
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xorq RID1, RID1;
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xorq RID2, RID2;
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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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movb rr(CTX), %al;
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testb %al, %al;
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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 %rcx;
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popq %rbx;
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testb %cl, %cl;
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jnz __enc_xor16;
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outunpack_blocks(%rsi, RR1, RL1, RTMP, RX);
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leaq (2*4*4)(%rsi), %rax;
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outunpack_blocks(%rax, RR2, RL2, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_blocks(%rax, RR3, RL3, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_blocks(%rax, RR4, RL4, RTMP, RX);
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ret;
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__enc_xor16:
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outunpack_xor_blocks(%rsi, RR1, RL1, RTMP, RX);
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leaq (2*4*4)(%rsi), %rax;
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outunpack_xor_blocks(%rax, RR2, RL2, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_xor_blocks(%rax, RR3, RL3, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_xor_blocks(%rax, RR4, RL4, RTMP, RX);
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ret;
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.align 16
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.global cast5_dec_blk_16way
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.type cast5_dec_blk_16way,@function;
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cast5_dec_blk_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 %rbx;
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vmovdqu .Lbswap_mask, RMASK;
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vmovdqu .L32_mask, R32;
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vpxor RKRF, RKRF, RKRF;
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inpack_blocks(%rdx, RL1, RR1, RTMP, RX);
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leaq (2*4*4)(%rdx), %rax;
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inpack_blocks(%rax, RL2, RR2, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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inpack_blocks(%rax, RL3, RR3, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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inpack_blocks(%rax, RL4, RR4, RTMP, RX);
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xorq RID1, RID1;
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xorq RID2, RID2;
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movb rr(CTX), %al;
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testb %al, %al;
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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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__skip_dec:
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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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popq %rbx;
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outunpack_blocks(%rsi, RR1, RL1, RTMP, RX);
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leaq (2*4*4)(%rsi), %rax;
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outunpack_blocks(%rax, RR2, RL2, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_blocks(%rax, RR3, RL3, RTMP, RX);
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leaq (2*4*4)(%rax), %rax;
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outunpack_blocks(%rax, RR4, RL4, RTMP, RX);
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ret;
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