/*
* Camellia Cipher Algorithm (x86_64)
*
* Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <linux/linkage.h>
.file "camellia-x86_64-asm_64.S"
.text
.extern camellia_sp10011110;
.extern camellia_sp22000222;
.extern camellia_sp03303033;
.extern camellia_sp00444404;
.extern camellia_sp02220222;
.extern camellia_sp30333033;
.extern camellia_sp44044404;
.extern camellia_sp11101110;
#define sp10011110 camellia_sp10011110
#define sp22000222 camellia_sp22000222
#define sp03303033 camellia_sp03303033
#define sp00444404 camellia_sp00444404
#define sp02220222 camellia_sp02220222
#define sp30333033 camellia_sp30333033
#define sp44044404 camellia_sp44044404
#define sp11101110 camellia_sp11101110
#define CAMELLIA_TABLE_BYTE_LEN 272
/* struct camellia_ctx: */
#define key_table 0
#define key_length CAMELLIA_TABLE_BYTE_LEN
/* register macros */
#define CTX %rdi
#define RIO %rsi
#define RIOd %esi
#define RAB0 %rax
#define RCD0 %rcx
#define RAB1 %rbx
#define RCD1 %rdx
#define RAB0d %eax
#define RCD0d %ecx
#define RAB1d %ebx
#define RCD1d %edx
#define RAB0bl %al
#define RCD0bl %cl
#define RAB1bl %bl
#define RCD1bl %dl
#define RAB0bh %ah
#define RCD0bh %ch
#define RAB1bh %bh
#define RCD1bh %dh
#define RT0 %rsi
#define RT1 %rbp
#define RT2 %r8
#define RT0d %esi
#define RT1d %ebp
#define RT2d %r8d
#define RT2bl %r8b
#define RXOR %r9
#define RRBP %r10
#define RDST %r11
#define RXORd %r9d
#define RXORbl %r9b
#define xor2ror16(T0, T1, tmp1, tmp2, ab, dst) \
movzbl ab ## bl, tmp2 ## d; \
movzbl ab ## bh, tmp1 ## d; \
rorq $16, ab; \
xorq T0(, tmp2, 8), dst; \
xorq T1(, tmp1, 8), dst;
/**********************************************************************
1-way camellia
**********************************************************************/
#define roundsm(ab, subkey, cd) \
movq (key_table + ((subkey) * 2) * 4)(CTX), RT2; \
\
xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 0, cd ## 0); \
xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 0, RT2); \
xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 0, cd ## 0); \
xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 0, RT2); \
\
xorq RT2, cd ## 0;
#define fls(l, r, kl, kr) \
movl (key_table + ((kl) * 2) * 4)(CTX), RT0d; \
andl l ## 0d, RT0d; \
roll $1, RT0d; \
shlq $32, RT0; \
xorq RT0, l ## 0; \
movq (key_table + ((kr) * 2) * 4)(CTX), RT1; \
orq r ## 0, RT1; \
shrq $32, RT1; \
xorq RT1, r ## 0; \
\
movq (key_table + ((kl) * 2) * 4)(CTX), RT2; \
orq l ## 0, RT2; \
shrq $32, RT2; \
xorq RT2, l ## 0; \
movl (key_table + ((kr) * 2) * 4)(CTX), RT0d; \
andl r ## 0d, RT0d; \
roll $1, RT0d; \
shlq $32, RT0; \
xorq RT0, r ## 0;
#define enc_rounds(i) \
roundsm(RAB, i + 2, RCD); \
roundsm(RCD, i + 3, RAB); \
roundsm(RAB, i + 4, RCD); \
roundsm(RCD, i + 5, RAB); \
roundsm(RAB, i + 6, RCD); \
roundsm(RCD, i + 7, RAB);
#define enc_fls(i) \
fls(RAB, RCD, i + 0, i + 1);
#define enc_inpack() \
movq (RIO), RAB0; \
bswapq RAB0; \
rolq $32, RAB0; \
movq 4*2(RIO), RCD0; \
bswapq RCD0; \
rorq $32, RCD0; \
xorq key_table(CTX), RAB0;
#define enc_outunpack(op, max) \
xorq key_table(CTX, max, 8), RCD0; \
rorq $32, RCD0; \
bswapq RCD0; \
op ## q RCD0, (RIO); \
rolq $32, RAB0; \
bswapq RAB0; \
op ## q RAB0, 4*2(RIO);
#define dec_rounds(i) \
roundsm(RAB, i + 7, RCD); \
roundsm(RCD, i + 6, RAB); \
roundsm(RAB, i + 5, RCD); \
roundsm(RCD, i + 4, RAB); \
roundsm(RAB, i + 3, RCD); \
roundsm(RCD, i + 2, RAB);
#define dec_fls(i) \
fls(RAB, RCD, i + 1, i + 0);
#define dec_inpack(max) \
movq (RIO), RAB0; \
bswapq RAB0; \
rolq $32, RAB0; \
movq 4*2(RIO), RCD0; \
bswapq RCD0; \
rorq $32, RCD0; \
xorq key_table(CTX, max, 8), RAB0;
#define dec_outunpack() \
xorq key_table(CTX), RCD0; \
rorq $32, RCD0; \
bswapq RCD0; \
movq RCD0, (RIO); \
rolq $32, RAB0; \
bswapq RAB0; \
movq RAB0, 4*2(RIO);
ENTRY(__camellia_enc_blk)
/* input:
* %rdi: ctx, CTX
* %rsi: dst
* %rdx: src
* %rcx: bool xor
*/
movq %rbp, RRBP;
movq %rcx, RXOR;
movq %rsi, RDST;
movq %rdx, RIO;
enc_inpack();
enc_rounds(0);
enc_fls(8);
enc_rounds(8);
enc_fls(16);
enc_rounds(16);
movl $24, RT1d; /* max */
cmpb $16, key_length(CTX);
je .L__enc_done;
enc_fls(24);
enc_rounds(24);
movl $32, RT1d; /* max */
.L__enc_done:
testb RXORbl, RXORbl;
movq RDST, RIO;
jnz .L__enc_xor;
enc_outunpack(mov, RT1);
movq RRBP, %rbp;
ret;
.L__enc_xor:
enc_outunpack(xor, RT1);
movq RRBP, %rbp;
ret;
ENDPROC(__camellia_enc_blk)
ENTRY(camellia_dec_blk)
/* input:
* %rdi: ctx, CTX
* %rsi: dst
* %rdx: src
*/
cmpl $16, key_length(CTX);
movl $32, RT2d;
movl $24, RXORd;
cmovel RXORd, RT2d; /* max */
movq %rbp, RRBP;
movq %rsi, RDST;
movq %rdx, RIO;
dec_inpack(RT2);
cmpb $24, RT2bl;
je .L__dec_rounds16;
dec_rounds(24);
dec_fls(24);
.L__dec_rounds16:
dec_rounds(16);
dec_fls(16);
dec_rounds(8);
dec_fls(8);
dec_rounds(0);
movq RDST, RIO;
dec_outunpack();
movq RRBP, %rbp;
ret;
ENDPROC(camellia_dec_blk)
/**********************************************************************
2-way camellia
**********************************************************************/
#define roundsm2(ab, subkey, cd) \
movq (key_table + ((subkey) * 2) * 4)(CTX), RT2; \
xorq RT2, cd ## 1; \
\
xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 0, cd ## 0); \
xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 0, RT2); \
xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 0, cd ## 0); \
xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 0, RT2); \
\
xor2ror16(sp00444404, sp03303033, RT0, RT1, ab ## 1, cd ## 1); \
xorq RT2, cd ## 0; \
xor2ror16(sp22000222, sp10011110, RT0, RT1, ab ## 1, cd ## 1); \
xor2ror16(sp11101110, sp44044404, RT0, RT1, ab ## 1, cd ## 1); \
xor2ror16(sp30333033, sp02220222, RT0, RT1, ab ## 1, cd ## 1);
#define fls2(l, r, kl, kr) \
movl (key_table + ((kl) * 2) * 4)(CTX), RT0d; \
andl l ## 0d, RT0d; \
roll $1, RT0d; \
shlq $32, RT0; \
xorq RT0, l ## 0; \
movq (key_table + ((kr) * 2) * 4)(CTX), RT1; \
orq r ## 0, RT1; \
shrq $32, RT1; \
xorq RT1, r ## 0; \
\
movl (key_table + ((kl) * 2) * 4)(CTX), RT2d; \
andl l ## 1d, RT2d; \
roll $1, RT2d; \
shlq $32, RT2; \
xorq RT2, l ## 1; \
movq (key_table + ((kr) * 2) * 4)(CTX), RT0; \
orq r ## 1, RT0; \
shrq $32, RT0; \
xorq RT0, r ## 1; \
\
movq (key_table + ((kl) * 2) * 4)(CTX), RT1; \
orq l ## 0, RT1; \
shrq $32, RT1; \
xorq RT1, l ## 0; \
movl (key_table + ((kr) * 2) * 4)(CTX), RT2d; \
andl r ## 0d, RT2d; \
roll $1, RT2d; \
shlq $32, RT2; \
xorq RT2, r ## 0; \
\
movq (key_table + ((kl) * 2) * 4)(CTX), RT0; \
orq l ## 1, RT0; \
shrq $32, RT0; \
xorq RT0, l ## 1; \
movl (key_table + ((kr) * 2) * 4)(CTX), RT1d; \
andl r ## 1d, RT1d; \
roll $1, RT1d; \
shlq $32, RT1; \
xorq RT1, r ## 1;
#define enc_rounds2(i) \
roundsm2(RAB, i + 2, RCD); \
roundsm2(RCD, i + 3, RAB); \
roundsm2(RAB, i + 4, RCD); \
roundsm2(RCD, i + 5, RAB); \
roundsm2(RAB, i + 6, RCD); \
roundsm2(RCD, i + 7, RAB);
#define enc_fls2(i) \
fls2(RAB, RCD, i + 0, i + 1);
#define enc_inpack2() \
movq (RIO), RAB0; \
bswapq RAB0; \
rorq $32, RAB0; \
movq 4*2(RIO), RCD0; \
bswapq RCD0; \
rolq $32, RCD0; \
xorq key_table(CTX), RAB0; \
\
movq 8*2(RIO), RAB1; \
bswapq RAB1; \
rorq $32, RAB1; \
movq 12*2(RIO), RCD1; \
bswapq RCD1; \
rolq $32, RCD1; \
xorq key_table(CTX), RAB1;
#define enc_outunpack2(op, max) \
xorq key_table(CTX, max, 8), RCD0; \
rolq $32, RCD0; \
bswapq RCD0; \
op ## q RCD0, (RIO); \
rorq $32, RAB0; \
bswapq RAB0; \
op ## q RAB0, 4*2(RIO); \
\
xorq key_table(CTX, max, 8), RCD1; \
rolq $32, RCD1; \
bswapq RCD1; \
op ## q RCD1, 8*2(RIO); \
rorq $32, RAB1; \
bswapq RAB1; \
op ## q RAB1, 12*2(RIO);
#define dec_rounds2(i) \
roundsm2(RAB, i + 7, RCD); \
roundsm2(RCD, i + 6, RAB); \
roundsm2(RAB, i + 5, RCD); \
roundsm2(RCD, i + 4, RAB); \
roundsm2(RAB, i + 3, RCD); \
roundsm2(RCD, i + 2, RAB);
#define dec_fls2(i) \
fls2(RAB, RCD, i + 1, i + 0);
#define dec_inpack2(max) \
movq (RIO), RAB0; \
bswapq RAB0; \
rorq $32, RAB0; \
movq 4*2(RIO), RCD0; \
bswapq RCD0; \
rolq $32, RCD0; \
xorq key_table(CTX, max, 8), RAB0; \
\
movq 8*2(RIO), RAB1; \
bswapq RAB1; \
rorq $32, RAB1; \
movq 12*2(RIO), RCD1; \
bswapq RCD1; \
rolq $32, RCD1; \
xorq key_table(CTX, max, 8), RAB1;
#define dec_outunpack2() \
xorq key_table(CTX), RCD0; \
rolq $32, RCD0; \
bswapq RCD0; \
movq RCD0, (RIO); \
rorq $32, RAB0; \
bswapq RAB0; \
movq RAB0, 4*2(RIO); \
\
xorq key_table(CTX), RCD1; \
rolq $32, RCD1; \
bswapq RCD1; \
movq RCD1, 8*2(RIO); \
rorq $32, RAB1; \
bswapq RAB1; \
movq RAB1, 12*2(RIO);
ENTRY(__camellia_enc_blk_2way)
/* input:
* %rdi: ctx, CTX
* %rsi: dst
* %rdx: src
* %rcx: bool xor
*/
pushq %rbx;
movq %rbp, RRBP;
movq %rcx, RXOR;
movq %rsi, RDST;
movq %rdx, RIO;
enc_inpack2();
enc_rounds2(0);
enc_fls2(8);
enc_rounds2(8);
enc_fls2(16);
enc_rounds2(16);
movl $24, RT2d; /* max */
cmpb $16, key_length(CTX);
je .L__enc2_done;
enc_fls2(24);
enc_rounds2(24);
movl $32, RT2d; /* max */
.L__enc2_done:
test RXORbl, RXORbl;
movq RDST, RIO;
jnz .L__enc2_xor;
enc_outunpack2(mov, RT2);
movq RRBP, %rbp;
popq %rbx;
ret;
.L__enc2_xor:
enc_outunpack2(xor, RT2);
movq RRBP, %rbp;
popq %rbx;
ret;
ENDPROC(__camellia_enc_blk_2way)
ENTRY(camellia_dec_blk_2way)
/* input:
* %rdi: ctx, CTX
* %rsi: dst
* %rdx: src
*/
cmpl $16, key_length(CTX);
movl $32, RT2d;
movl $24, RXORd;
cmovel RXORd, RT2d; /* max */
movq %rbx, RXOR;
movq %rbp, RRBP;
movq %rsi, RDST;
movq %rdx, RIO;
dec_inpack2(RT2);
cmpb $24, RT2bl;
je .L__dec2_rounds16;
dec_rounds2(24);
dec_fls2(24);
.L__dec2_rounds16:
dec_rounds2(16);
dec_fls2(16);
dec_rounds2(8);
dec_fls2(8);
dec_rounds2(0);
movq RDST, RIO;
dec_outunpack2();
movq RRBP, %rbp;
movq RXOR, %rbx;
ret;
ENDPROC(camellia_dec_blk_2way)
