/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Cast5 Cipher 16-way parallel algorithm (AVX/x86_64)
*
* Copyright (C) 2012 Johannes Goetzfried
* <Johannes.Goetzfried@informatik.stud.uni-erlangen.de>
*
* Copyright © 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
*/
#include <linux/linkage.h>
#include <asm/frame.h>
.
file "cast5-avx-x86_64-asm_64.S"
.extern cast_s1
.extern cast_s2
.extern cast_s3
.extern cast_s4
/* structure of crypto context */
#define km 0
#define kr (16*4)
#define rr ((16*4)+16)
/* s-boxes */
#define s1 cast_s1
#define s2 cast_s2
#define s3 cast_s3
#define s4 cast_s4
/**********************************************************************
16-way AVX cast5
**********************************************************************/
#define CTX %r15
#define RL1 %xmm0
#define RR1 %xmm1
#define RL2 %xmm2
#define RR2 %xmm3
#define RL3 %xmm4
#define RR3 %xmm5
#define RL4 %xmm6
#define RR4 %xmm7
#define RX %xmm8
#define RKM %xmm9
#define RKR %xmm10
#define RKRF %xmm11
#define RKRR %xmm12
#define R32 %xmm13
#define R1ST %xmm14
#define RTMP %xmm15
#define RID1 %rdi
#define RID1d %edi
#define RID2 %rsi
#define RID2d %esi
#define RGI1 %rdx
#define RGI1bl %dl
#define RGI1bh %dh
#define RGI2 %rcx
#define RGI2bl %cl
#define RGI2bh %ch
#define RGI3 %rax
#define RGI3bl %al
#define RGI3bh %ah
#define RGI4 %rbx
#define RGI4bl %bl
#define RGI4bh %bh
#define RFS1 %r8
#define RFS1d %r8d
#define RFS2 %r9
#define RFS2d %r9d
#define RFS3 %r10
#define RFS3d %r10d
#define lookup_32bit(src, dst, op1, op2, op3, interleave_op, il_reg) \
movzbl src ## bh, RID1d; \
leaq s1(%rip), RID2; \
movl (RID2,RID1,4), dst ## d; \
movzbl src ## bl, RID2d; \
leaq s2(%rip), RID1; \
op1 (RID1,RID2,4), dst ## d; \
shrq $16, src; \
movzbl src ## bh, RID1d; \
leaq s3(%rip), RID2; \
op2 (RID2,RID1,4), dst ## d; \
movzbl src ## bl, RID2d; \
interleave_op(il_reg); \
leaq s4(%rip), RID1; \
op3 (RID1,RID2,4), dst ## d;
#define dummy(d)
/* do nothing */
#define shr_next(reg) \
shrq $16, reg;
#define F_head(a, x, gi1, gi2, op0) \
op0 a, RKM, x; \
vpslld RKRF, x, RTMP; \
vpsrld RKRR, x, x; \
vpor RTMP, x, x; \
\
vmovq x, gi1; \
vpextrq $1, x, gi2;
#define F_tail(a, x, gi1, gi2, op1, op2, op3) \
lookup_32bit(##gi1, RFS1, op1, op2, op3, shr_next, ##gi1); \
lookup_32bit(##gi2, RFS3, op1, op2, op3, shr_next, ##gi2); \
\
lookup_32bit(##gi1, RFS2, op1, op2, op3, dummy, none); \
shlq $32, RFS2; \
orq RFS1, RFS2; \
lookup_32bit(##gi2, RFS1, op1, op2, op3, dummy, none); \
shlq $32, RFS1; \
orq RFS1, RFS3; \
\
vmovq RFS2, x; \
vpinsrq $1, RFS3, x, x;
#define F_2(a1, b1, a2, b2, op0, op1, op2, op3) \
F_head(b1, RX, RGI1, RGI2, op0); \
F_head(b2, RX, RGI3, RGI4, op0); \
\
F_tail(b1, RX, RGI1, RGI2, op1, op2, op3); \
F_tail(b2, RTMP, RGI3, RGI4, op1, op2, op3); \
\
vpxor a1, RX, a1; \
vpxor a2, RTMP, a2;
#define F1_2(a1, b1, a2, b2) \
F_2(a1, b1, a2, b2, vpaddd, xorl, subl, addl)
#define F2_2(a1, b1, a2, b2) \
F_2(a1, b1, a2, b2, vpxor, subl, addl, xorl)
#define F3_2(a1, b1, a2, b2) \
F_2(a1, b1, a2, b2, vpsubd, addl, xorl, subl)
#define subround(a1, b1, a2, b2, f) \
F ## f ## _2(a1, b1, a2, b2);
#define round(l, r, n, f) \
vbroadcastss (km+(4*n))(CTX), RKM; \
vpand R1ST, RKR, RKRF; \
vpsubq RKRF, R32, RKRR; \
vpsrldq $1, RKR, RKR; \
subround(l ## 1, r ## 1, l ## 2, r ## 2, f); \
subround(l ## 3, r ## 3, l ## 4, r ## 4, f);
#define enc_preload_rkr() \
vbroadcastss .L16_mask(%rip), RKR; \
/* add 16-bit rotation to key rotations (mod 32) */ \
vpxor kr(CTX), RKR, RKR;
#define dec_preload_rkr() \
vbroadcastss .L16_mask(%rip), RKR; \
/* add 16-bit rotation to key rotations (mod 32) */ \
vpxor kr(CTX), RKR, RKR; \
vpshufb .Lbswap128_mask(%rip), RKR, RKR;
#define transpose_2x4(x0, x1, t0, t1) \
vpunpckldq x1, x0, t0; \
vpunpckhdq x1, x0, t1; \
\
vpunpcklqdq t1, t0, x0; \
vpunpckhqdq t1, t0, x1;
#define inpack_blocks(x0, x1, t0, t1, rmask) \
vpshufb rmask, x0, x0; \
vpshufb rmask, x1, x1; \
\
transpose_2x4(x0, x1, t0, t1)
#define outunpack_blocks(x0, x1, t0, t1, rmask) \
transpose_2x4(x0, x1, t0, t1) \
\
vpshufb rmask, x0, x0; \
vpshufb rmask, x1, x1;
.
section .rodata.cst16.bswap_mask,
"aM", @progbits, 16
.
align 16
.Lbswap_mask:
.byte 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
.
section .rodata.cst16.bswap128_mask,
"aM", @progbits, 16
.
align 16
.Lbswap128_mask:
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
.
section .rodata.cst16.bswap_iv_mask,
"aM", @progbits, 16
.
align 16
.Lbswap_iv_mask:
.byte 7, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0
.
section .rodata.cst4.16_mask,
"aM", @progbits, 4
.
align 4
.L16_mask:
.byte 16, 16, 16, 16
.
section .rodata.cst4.32_mask,
"aM", @progbits, 4
.
align 4
.L32_mask:
.byte 32, 0, 0, 0
.
section .rodata.cst4.first_mask,
"aM", @progbits, 4
.
align 4
.Lfirst_mask:
.byte 0x1f, 0, 0, 0
.text
SYM_FUNC_START_LOCAL(__cast5_enc_blk16)
/* input:
* %rdi: ctx
* RL1: blocks 1 and 2
* RR1: blocks 3 and 4
* RL2: blocks 5 and 6
* RR2: blocks 7 and 8
* RL3: blocks 9 and 10
* RR3: blocks 11 and 12
* RL4: blocks 13 and 14
* RR4: blocks 15 and 16
* output:
* RL1: encrypted blocks 1 and 2
* RR1: encrypted blocks 3 and 4
* RL2: encrypted blocks 5 and 6
* RR2: encrypted blocks 7 and 8
* RL3: encrypted blocks 9 and 10
* RR3: encrypted blocks 11 and 12
* RL4: encrypted blocks 13 and 14
* RR4: encrypted blocks 15 and 16
*/
pushq %r15;
pushq %rbx;
movq %rdi, CTX;
vmovdqa .Lbswap_mask(%rip), RKM;
vmovd .Lfirst_mask(%rip), R1ST;
vmovd .L32_mask(%rip), R32;
enc_preload_rkr();
inpack_blocks(RL1, RR1, RTMP, RX, RKM);
inpack_blocks(RL2, RR2, RTMP, RX, RKM);
inpack_blocks(RL3, RR3, RTMP, RX, RKM);
inpack_blocks(RL4, RR4, RTMP, RX, RKM);
round(RL, RR, 0, 1);
round(RR, RL, 1, 2);
round(RL, RR, 2, 3);
round(RR, RL, 3, 1);
round(RL, RR, 4, 2);
round(RR, RL, 5, 3);
round(RL, RR, 6, 1);
round(RR, RL, 7, 2);
round(RL, RR, 8, 3);
round(RR, RL, 9, 1);
round(RL, RR, 10, 2);
round(RR, RL, 11, 3);
movzbl rr(CTX), %eax;
testl %eax, %eax;
jnz .L__skip_enc;
round(RL, RR, 12, 1);
round(RR, RL, 13, 2);
round(RL, RR, 14, 3);
round(RR, RL, 15, 1);
.L__skip_enc:
popq %rbx;
popq %r15;
vmovdqa .Lbswap_mask(%rip), RKM;
outunpack_blocks(RR1, RL1, RTMP, RX, RKM);
outunpack_blocks(RR2, RL2, RTMP, RX, RKM);
outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
RET;
SYM_FUNC_END(__cast5_enc_blk16)
SYM_FUNC_START_LOCAL(__cast5_dec_blk16)
/* input:
* %rdi: ctx
* RL1: encrypted blocks 1 and 2
* RR1: encrypted blocks 3 and 4
* RL2: encrypted blocks 5 and 6
* RR2: encrypted blocks 7 and 8
* RL3: encrypted blocks 9 and 10
* RR3: encrypted blocks 11 and 12
* RL4: encrypted blocks 13 and 14
* RR4: encrypted blocks 15 and 16
* output:
* RL1: decrypted blocks 1 and 2
* RR1: decrypted blocks 3 and 4
* RL2: decrypted blocks 5 and 6
* RR2: decrypted blocks 7 and 8
* RL3: decrypted blocks 9 and 10
* RR3: decrypted blocks 11 and 12
* RL4: decrypted blocks 13 and 14
* RR4: decrypted blocks 15 and 16
*/
pushq %r15;
pushq %rbx;
movq %rdi, CTX;
vmovdqa .Lbswap_mask(%rip), RKM;
vmovd .Lfirst_mask(%rip), R1ST;
vmovd .L32_mask(%rip), R32;
dec_preload_rkr();
inpack_blocks(RL1, RR1, RTMP, RX, RKM);
inpack_blocks(RL2, RR2, RTMP, RX, RKM);
inpack_blocks(RL3, RR3, RTMP, RX, RKM);
inpack_blocks(RL4, RR4, RTMP, RX, RKM);
movzbl rr(CTX), %eax;
testl %eax, %eax;
jnz .L__skip_dec;
round(RL, RR, 15, 1);
round(RR, RL, 14, 3);
round(RL, RR, 13, 2);
round(RR, RL, 12, 1);
.L__dec_tail:
round(RL, RR, 11, 3);
round(RR, RL, 10, 2);
round(RL, RR, 9, 1);
round(RR, RL, 8, 3);
round(RL, RR, 7, 2);
round(RR, RL, 6, 1);
round(RL, RR, 5, 3);
round(RR, RL, 4, 2);
round(RL, RR, 3, 1);
round(RR, RL, 2, 3);
round(RL, RR, 1, 2);
round(RR, RL, 0, 1);
vmovdqa .Lbswap_mask(%rip), RKM;
popq %rbx;
popq %r15;
outunpack_blocks(RR1, RL1, RTMP, RX, RKM);
outunpack_blocks(RR2, RL2, RTMP, RX, RKM);
outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
RET;
.L__skip_dec:
vpsrldq $4, RKR, RKR;
jmp .L__dec_tail;
SYM_FUNC_END(__cast5_dec_blk16)
SYM_FUNC_START(cast5_ecb_enc_16way)
/* input:
* %rdi: ctx
* %rsi: dst
* %rdx: src
*/
FRAME_BEGIN
pushq %r15;
movq %rdi, CTX;
movq %rsi, %r11;
vmovdqu (0*4*4)(%rdx), RL1;
vmovdqu (1*4*4)(%rdx), RR1;
vmovdqu (2*4*4)(%rdx), RL2;
vmovdqu (3*4*4)(%rdx), RR2;
vmovdqu (4*4*4)(%rdx), RL3;
vmovdqu (5*4*4)(%rdx), RR3;
vmovdqu (6*4*4)(%rdx), RL4;
vmovdqu (7*4*4)(%rdx), RR4;
call __cast5_enc_blk16;
vmovdqu RR1, (0*4*4)(%r11);
vmovdqu RL1, (1*4*4)(%r11);
vmovdqu RR2, (2*4*4)(%r11);
vmovdqu RL2, (3*4*4)(%r11);
vmovdqu RR3, (4*4*4)(%r11);
vmovdqu RL3, (5*4*4)(%r11);
vmovdqu RR4, (6*4*4)(%r11);
vmovdqu RL4, (7*4*4)(%r11);
popq %r15;
FRAME_END
RET;
SYM_FUNC_END(cast5_ecb_enc_16way)
SYM_FUNC_START(cast5_ecb_dec_16way)
/* input:
* %rdi: ctx
* %rsi: dst
* %rdx: src
*/
FRAME_BEGIN
pushq %r15;
movq %rdi, CTX;
movq %rsi, %r11;
vmovdqu (0*4*4)(%rdx), RL1;
vmovdqu (1*4*4)(%rdx), RR1;
vmovdqu (2*4*4)(%rdx), RL2;
vmovdqu (3*4*4)(%rdx), RR2;
vmovdqu (4*4*4)(%rdx), RL3;
vmovdqu (5*4*4)(%rdx), RR3;
vmovdqu (6*4*4)(%rdx), RL4;
vmovdqu (7*4*4)(%rdx), RR4;
call __cast5_dec_blk16;
vmovdqu RR1, (0*4*4)(%r11);
vmovdqu RL1, (1*4*4)(%r11);
vmovdqu RR2, (2*4*4)(%r11);
vmovdqu RL2, (3*4*4)(%r11);
vmovdqu RR3, (4*4*4)(%r11);
vmovdqu RL3, (5*4*4)(%r11);
vmovdqu RR4, (6*4*4)(%r11);
vmovdqu RL4, (7*4*4)(%r11);
popq %r15;
FRAME_END
RET;
SYM_FUNC_END(cast5_ecb_dec_16way)
SYM_FUNC_START(cast5_cbc_dec_16way)
/* input:
* %rdi: ctx
* %rsi: dst
* %rdx: src
*/
FRAME_BEGIN
pushq %r12;
pushq %r15;
movq %rdi, CTX;
movq %rsi, %r11;
movq %rdx, %r12;
vmovdqu (0*16)(%rdx), RL1;
vmovdqu (1*16)(%rdx), RR1;
vmovdqu (2*16)(%rdx), RL2;
vmovdqu (3*16)(%rdx), RR2;
vmovdqu (4*16)(%rdx), RL3;
vmovdqu (5*16)(%rdx), RR3;
vmovdqu (6*16)(%rdx), RL4;
vmovdqu (7*16)(%rdx), RR4;
call __cast5_dec_blk16;
/* xor with src */
vmovq (%r12), RX;
vpshufd $0x4f, RX, RX;
vpxor RX, RR1, RR1;
vpxor 0*16+8(%r12), RL1, RL1;
vpxor 1*16+8(%r12), RR2, RR2;
vpxor 2*16+8(%r12), RL2, RL2;
vpxor 3*16+8(%r12), RR3, RR3;
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 %r15;
popq %r12;
FRAME_END
RET;
SYM_FUNC_END(cast5_cbc_dec_16way)
