| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * Camellia Cipher Algorithm (x86_64) |
| * |
| * Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> |
| */ |
| |
| #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 %r12 |
| #define RT2 %r8 |
| |
| #define RT0d %esi |
| #define RT1d %r12d |
| #define RT2d %r8d |
| |
| #define RT2bl %r8b |
| |
| #define RXOR %r9 |
| #define RR12 %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 %r12, RR12; |
| |
| 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 RR12, %r12; |
| ret; |
| |
| .L__enc_xor: |
| enc_outunpack(xor, RT1); |
| |
| movq RR12, %r12; |
| 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 %r12, RR12; |
| 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 RR12, %r12; |
| 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 %r12, RR12; |
| 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 RR12, %r12; |
| popq %rbx; |
| ret; |
| |
| .L__enc2_xor: |
| enc_outunpack2(xor, RT2); |
| |
| movq RR12, %r12; |
| 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 %r12, RR12; |
| 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 RR12, %r12; |
| movq RXOR, %rbx; |
| ret; |
| ENDPROC(camellia_dec_blk_2way) |
