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|
/* sm4-armv9-aarch64-sve-ce.S - ARMv9/AArch64 SVE Cryptography accelerated SM4
*
* Copyright (C) 2022 Alibaba Group.
* Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
*
* This file is part of Libgcrypt.
*
* Libgcrypt is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* Libgcrypt 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "asm-common-aarch64.h"
#if defined(__AARCH64EL__) && \
defined(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS) && \
defined(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO) && \
defined(HAVE_GCC_INLINE_ASM_AARCH64_SVE) && \
defined(HAVE_GCC_INLINE_ASM_AARCH64_SVE2) && \
defined(USE_SM4)
.cpu generic+simd+crypto+sve+sve2
/* Constants */
SECTION_RODATA
.align 4
ELF(.type _gcry_sm4_armv9_svesm4_consts,@object)
_gcry_sm4_armv9_svesm4_consts:
.Lbswap128_mask:
.byte 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b
.byte 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03
.byte 0x1c, 0x1d, 0x1e, 0x1f, 0x18, 0x19, 0x1a, 0x1b
.byte 0x14, 0x15, 0x16, 0x17, 0x10, 0x11, 0x12, 0x13
.byte 0x2c, 0x2d, 0x2e, 0x2f, 0x28, 0x29, 0x2a, 0x2b
.byte 0x24, 0x25, 0x26, 0x27, 0x20, 0x21, 0x22, 0x23
.byte 0x3c, 0x3d, 0x3e, 0x3f, 0x38, 0x39, 0x3a, 0x3b
.byte 0x34, 0x35, 0x36, 0x37, 0x30, 0x31, 0x32, 0x33
.byte 0x4c, 0x4d, 0x4e, 0x4f, 0x48, 0x49, 0x4a, 0x4b
.byte 0x44, 0x45, 0x46, 0x47, 0x40, 0x41, 0x42, 0x43
.byte 0x5c, 0x5d, 0x5e, 0x5f, 0x58, 0x59, 0x5a, 0x5b
.byte 0x54, 0x55, 0x56, 0x57, 0x50, 0x51, 0x52, 0x53
.byte 0x6c, 0x6d, 0x6e, 0x6f, 0x68, 0x69, 0x6a, 0x6b
.byte 0x64, 0x65, 0x66, 0x67, 0x60, 0x61, 0x62, 0x63
.byte 0x7c, 0x7d, 0x7e, 0x7f, 0x78, 0x79, 0x7a, 0x7b
.byte 0x74, 0x75, 0x76, 0x77, 0x70, 0x71, 0x72, 0x73
.byte 0x8c, 0x8d, 0x8e, 0x8f, 0x88, 0x89, 0x8a, 0x8b
.byte 0x84, 0x85, 0x86, 0x87, 0x80, 0x81, 0x82, 0x83
.byte 0x9c, 0x9d, 0x9e, 0x9f, 0x98, 0x99, 0x9a, 0x9b
.byte 0x94, 0x95, 0x96, 0x97, 0x90, 0x91, 0x92, 0x93
.byte 0xac, 0xad, 0xae, 0xaf, 0xa8, 0xa9, 0xaa, 0xab
.byte 0xa4, 0xa5, 0xa6, 0xa7, 0xa0, 0xa1, 0xa2, 0xa3
.byte 0xbc, 0xbd, 0xbe, 0xbf, 0xb8, 0xb9, 0xba, 0xbb
.byte 0xb4, 0xb5, 0xb6, 0xb7, 0xb0, 0xb1, 0xb2, 0xb3
.byte 0xcc, 0xcd, 0xce, 0xcf, 0xc8, 0xc9, 0xca, 0xcb
.byte 0xc4, 0xc5, 0xc6, 0xc7, 0xc0, 0xc1, 0xc2, 0xc3
.byte 0xdc, 0xdd, 0xde, 0xdf, 0xd8, 0xd9, 0xda, 0xdb
.byte 0xd4, 0xd5, 0xd6, 0xd7, 0xd0, 0xd1, 0xd2, 0xd3
.byte 0xec, 0xed, 0xee, 0xef, 0xe8, 0xe9, 0xea, 0xeb
.byte 0xe4, 0xe5, 0xe6, 0xe7, 0xe0, 0xe1, 0xe2, 0xe3
.byte 0xfc, 0xfd, 0xfe, 0xff, 0xf8, 0xf9, 0xfa, 0xfb
.byte 0xf4, 0xf5, 0xf6, 0xf7, 0xf0, 0xf1, 0xf2, 0xf3
.Lle128_inc:
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
ELF(.size _gcry_sm4_armv9_svesm4_consts,.-_gcry_sm4_armv9_svesm4_consts)
/* Register macros */
#define RCTR z16
#define RCTRv v16
#define RIV z16
#define RIVv v16
#define RSWAP128 z17
#define RZERO z18
#define RLE128_INC z19
#define RTMP0 z20
#define RTMP1 z21
#define RTMP2 z22
#define RTMP3 z23
#define RTMP0v v20
#define vecnum_z0 0
#define vecnum_z1 1
#define vecnum_z2 2
#define vecnum_z3 3
#define vecnum_z4 4
#define vecnum_z5 5
#define vecnum_z6 6
#define vecnum_z7 7
#define vecnum_z8 8
#define vecnum_z9 9
#define vecnum_z10 10
#define vecnum_z11 11
#define vecnum_z12 12
#define vecnum_z13 13
#define vecnum_z14 14
#define vecnum_z15 15
#define vecnum_z16 16
#define vecnum_z24 24
#define vecnum_z25 25
#define vecnum_z26 26
#define vecnum_z27 27
#define vecnum_z28 28
#define vecnum_z29 29
#define vecnum_z30 30
#define vecnum_z31 31
#define vecnum_v0 0
#define vecnum_v15 15
#define vecnum_v24 24
#define vecnum_v25 25
#define vecnum_v26 26
#define vecnum_v27 27
#define vecnum_v28 28
#define vecnum_v29 29
#define vecnum_v30 30
#define vecnum_v31 31
#define sm4e_ce(vd, vn) \
.inst (0xcec08400 | (vecnum_##vn << 5) | vecnum_##vd)
#define sm4e_sve(zd, zm) \
.inst (0x4523e000 | (vecnum_##zm << 5) | vecnum_##zd)
/* Helper macros. */
#define PREPARE() \
GET_DATA_POINTER(x7, .Lbswap128_mask); \
ptrue p0.b, ALL; \
rdvl x5, #1; \
ld1b {RSWAP128.b}, p0/z, [x7]; \
\
ld1 {v24.16b-v27.16b}, [x0], #64; \
ld1 {v28.16b-v31.16b}, [x0]; \
dup z24.q, z24.q[0]; \
dup z25.q, z25.q[0]; \
dup z26.q, z26.q[0]; \
dup z27.q, z27.q[0]; \
dup z28.q, z28.q[0]; \
dup z29.q, z29.q[0]; \
dup z30.q, z30.q[0]; \
dup z31.q, z31.q[0];
#define SM4_SVE_CE_CRYPT_BLK(b0) \
revb b0.s, p0/m, b0.s; \
sm4e_sve(b0, z24); \
sm4e_sve(b0, z25); \
sm4e_sve(b0, z26); \
sm4e_sve(b0, z27); \
sm4e_sve(b0, z28); \
sm4e_sve(b0, z29); \
sm4e_sve(b0, z30); \
sm4e_sve(b0, z31); \
tbl b0.b, {b0.b}, RSWAP128.b; \
revb b0.s, p0/m, b0.s;
#define SM4_SVE_CE_CRYPT_BLK4(b0, b1, b2, b3) \
revb b0.s, p0/m, b0.s; \
revb b1.s, p0/m, b1.s; \
revb b2.s, p0/m, b2.s; \
revb b3.s, p0/m, b3.s; \
sm4e_sve(b0, z24); \
sm4e_sve(b1, z24); \
sm4e_sve(b2, z24); \
sm4e_sve(b3, z24); \
sm4e_sve(b0, z25); \
sm4e_sve(b1, z25); \
sm4e_sve(b2, z25); \
sm4e_sve(b3, z25); \
sm4e_sve(b0, z26); \
sm4e_sve(b1, z26); \
sm4e_sve(b2, z26); \
sm4e_sve(b3, z26); \
sm4e_sve(b0, z27); \
sm4e_sve(b1, z27); \
sm4e_sve(b2, z27); \
sm4e_sve(b3, z27); \
sm4e_sve(b0, z28); \
sm4e_sve(b1, z28); \
sm4e_sve(b2, z28); \
sm4e_sve(b3, z28); \
sm4e_sve(b0, z29); \
sm4e_sve(b1, z29); \
sm4e_sve(b2, z29); \
sm4e_sve(b3, z29); \
sm4e_sve(b0, z30); \
sm4e_sve(b1, z30); \
sm4e_sve(b2, z30); \
sm4e_sve(b3, z30); \
sm4e_sve(b0, z31); \
sm4e_sve(b1, z31); \
sm4e_sve(b2, z31); \
sm4e_sve(b3, z31); \
tbl b0.b, {b0.b}, RSWAP128.b; \
tbl b1.b, {b1.b}, RSWAP128.b; \
tbl b2.b, {b2.b}, RSWAP128.b; \
tbl b3.b, {b3.b}, RSWAP128.b; \
revb b0.s, p0/m, b0.s; \
revb b1.s, p0/m, b1.s; \
revb b2.s, p0/m, b2.s; \
revb b3.s, p0/m, b3.s;
#define SM4_SVE_CE_CRYPT_BLK8(b0, b1, b2, b3, b4, b5, b6, b7) \
revb b0.s, p0/m, b0.s; \
revb b1.s, p0/m, b1.s; \
revb b2.s, p0/m, b2.s; \
revb b3.s, p0/m, b3.s; \
revb b4.s, p0/m, b4.s; \
revb b5.s, p0/m, b5.s; \
revb b6.s, p0/m, b6.s; \
revb b7.s, p0/m, b7.s; \
sm4e_sve(b0, z24); \
sm4e_sve(b1, z24); \
sm4e_sve(b2, z24); \
sm4e_sve(b3, z24); \
sm4e_sve(b4, z24); \
sm4e_sve(b5, z24); \
sm4e_sve(b6, z24); \
sm4e_sve(b7, z24); \
sm4e_sve(b0, z25); \
sm4e_sve(b1, z25); \
sm4e_sve(b2, z25); \
sm4e_sve(b3, z25); \
sm4e_sve(b4, z25); \
sm4e_sve(b5, z25); \
sm4e_sve(b6, z25); \
sm4e_sve(b7, z25); \
sm4e_sve(b0, z26); \
sm4e_sve(b1, z26); \
sm4e_sve(b2, z26); \
sm4e_sve(b3, z26); \
sm4e_sve(b4, z26); \
sm4e_sve(b5, z26); \
sm4e_sve(b6, z26); \
sm4e_sve(b7, z26); \
sm4e_sve(b0, z27); \
sm4e_sve(b1, z27); \
sm4e_sve(b2, z27); \
sm4e_sve(b3, z27); \
sm4e_sve(b4, z27); \
sm4e_sve(b5, z27); \
sm4e_sve(b6, z27); \
sm4e_sve(b7, z27); \
sm4e_sve(b0, z28); \
sm4e_sve(b1, z28); \
sm4e_sve(b2, z28); \
sm4e_sve(b3, z28); \
sm4e_sve(b4, z28); \
sm4e_sve(b5, z28); \
sm4e_sve(b6, z28); \
sm4e_sve(b7, z28); \
sm4e_sve(b0, z29); \
sm4e_sve(b1, z29); \
sm4e_sve(b2, z29); \
sm4e_sve(b3, z29); \
sm4e_sve(b4, z29); \
sm4e_sve(b5, z29); \
sm4e_sve(b6, z29); \
sm4e_sve(b7, z29); \
sm4e_sve(b0, z30); \
sm4e_sve(b1, z30); \
sm4e_sve(b2, z30); \
sm4e_sve(b3, z30); \
sm4e_sve(b4, z30); \
sm4e_sve(b5, z30); \
sm4e_sve(b6, z30); \
sm4e_sve(b7, z30); \
sm4e_sve(b0, z31); \
sm4e_sve(b1, z31); \
sm4e_sve(b2, z31); \
sm4e_sve(b3, z31); \
sm4e_sve(b4, z31); \
sm4e_sve(b5, z31); \
sm4e_sve(b6, z31); \
sm4e_sve(b7, z31); \
tbl b0.b, {b0.b}, RSWAP128.b; \
tbl b1.b, {b1.b}, RSWAP128.b; \
tbl b2.b, {b2.b}, RSWAP128.b; \
tbl b3.b, {b3.b}, RSWAP128.b; \
tbl b4.b, {b4.b}, RSWAP128.b; \
tbl b5.b, {b5.b}, RSWAP128.b; \
tbl b6.b, {b6.b}, RSWAP128.b; \
tbl b7.b, {b7.b}, RSWAP128.b; \
revb b0.s, p0/m, b0.s; \
revb b1.s, p0/m, b1.s; \
revb b2.s, p0/m, b2.s; \
revb b3.s, p0/m, b3.s; \
revb b4.s, p0/m, b4.s; \
revb b5.s, p0/m, b5.s; \
revb b6.s, p0/m, b6.s; \
revb b7.s, p0/m, b7.s;
#define SM4_CE_CRYPT_BLK(b0) \
rev32 b0.16b, b0.16b; \
sm4e_ce(b0, v24); \
sm4e_ce(b0, v25); \
sm4e_ce(b0, v26); \
sm4e_ce(b0, v27); \
sm4e_ce(b0, v28); \
sm4e_ce(b0, v29); \
sm4e_ce(b0, v30); \
sm4e_ce(b0, v31); \
rev64 b0.4s, b0.4s; \
ext b0.16b, b0.16b, b0.16b, #8; \
rev32 b0.16b, b0.16b;
.align 4
.global _gcry_sm4_armv9_sve_ce_crypt
ELF(.type _gcry_sm4_armv9_sve_ce_crypt,%function;)
_gcry_sm4_armv9_sve_ce_crypt:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: nblocks
*/
CFI_STARTPROC();
PREPARE();
.Lcrypt_loop_blks:
sub x3, x3, x5, LSR #1; /* x3 - (8 * VL) */
tbnz x3, #63, .Lcrypt_tail8;
ld1b {z0.b}, p0/z, [x2];
ld1b {z1.b}, p0/z, [x2, #1, MUL VL];
ld1b {z2.b}, p0/z, [x2, #2, MUL VL];
ld1b {z3.b}, p0/z, [x2, #3, MUL VL];
ld1b {z4.b}, p0/z, [x2, #4, MUL VL];
ld1b {z5.b}, p0/z, [x2, #5, MUL VL];
ld1b {z6.b}, p0/z, [x2, #6, MUL VL];
ld1b {z7.b}, p0/z, [x2, #7, MUL VL];
addvl x2, x2, #8;
SM4_SVE_CE_CRYPT_BLK8(z0, z1, z2, z3, z4, z5, z6, z7);
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
st1b {z4.b}, p0, [x1, #4, MUL VL];
st1b {z5.b}, p0, [x1, #5, MUL VL];
st1b {z6.b}, p0, [x1, #6, MUL VL];
st1b {z7.b}, p0, [x1, #7, MUL VL];
addvl x1, x1, #8;
cbz x3, .Lcrypt_end;
b .Lcrypt_loop_blks;
.Lcrypt_tail8:
add x3, x3, x5, LSR #1;
cmp x3, x5, LSR #2;
blt .Lcrypt_tail4;
sub x3, x3, x5, LSR #2; /* x3 - (4 * VL) */
ld1b {z0.b}, p0/z, [x2];
ld1b {z1.b}, p0/z, [x2, #1, MUL VL];
ld1b {z2.b}, p0/z, [x2, #2, MUL VL];
ld1b {z3.b}, p0/z, [x2, #3, MUL VL];
addvl x2, x2, #4;
SM4_SVE_CE_CRYPT_BLK4(z0, z1, z2, z3);
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
addvl x1, x1, #4;
cbz x3, .Lcrypt_end;
.Lcrypt_tail4:
cmp x3, x5, LSR #4;
blt .Lcrypt_tail;
sub x3, x3, x5, LSR #4; /* x3 - VL */
ld1b {z0.b}, p0/z, [x2];
addvl x2, x2, #1;
SM4_SVE_CE_CRYPT_BLK(z0);
st1b {z0.b}, p0, [x1];
addvl x1, x1, #1;
cbz x3, .Lcrypt_end;
.Lcrypt_tail:
sub x3, x3, #1;
ld1 {v0.16b}, [x2], #16;
SM4_CE_CRYPT_BLK(v0);
st1 {v0.16b}, [x1], #16;
cbnz x3, .Lcrypt_tail;
.Lcrypt_end:
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_armv9_sve_ce_crypt,.-_gcry_sm4_armv9_sve_ce_crypt;)
.align 4
.global _gcry_sm4_armv9_sve_ce_cbc_dec
ELF(.type _gcry_sm4_armv9_sve_ce_cbc_dec,%function;)
_gcry_sm4_armv9_sve_ce_cbc_dec:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: iv (big endian, 128 bit)
* x4: nblocks
*/
CFI_STARTPROC();
VPUSH_ABI;
PREPARE();
ld1 {RIVv.16b}, [x3];
ext RIV.b, RIV.b, RIV.b, #16;
.Lcbc_loop_blks:
sub x4, x4, x5, LSR #1; /* x4 - (8 * VL) */
tbnz x4, #63, .Lcbc_tail8;
ld1b {z15.b}, p0/z, [x2];
ld1b {z14.b}, p0/z, [x2, #1, MUL VL];
ld1b {z13.b}, p0/z, [x2, #2, MUL VL];
ld1b {z12.b}, p0/z, [x2, #3, MUL VL];
ld1b {z11.b}, p0/z, [x2, #4, MUL VL];
ld1b {z10.b}, p0/z, [x2, #5, MUL VL];
ld1b {z9.b}, p0/z, [x2, #6, MUL VL];
ld1b {z8.b}, p0/z, [x2, #7, MUL VL];
rev z0.b, z15.b;
rev z1.b, z14.b;
rev z2.b, z13.b;
rev z3.b, z12.b;
rev z4.b, z11.b;
rev z5.b, z10.b;
rev z6.b, z9.b;
rev z7.b, z8.b;
rev RTMP0.b, RIV.b;
ext z7.b, z7.b, z6.b, #16;
ext z6.b, z6.b, z5.b, #16;
ext z5.b, z5.b, z4.b, #16;
ext z4.b, z4.b, z3.b, #16;
ext z3.b, z3.b, z2.b, #16;
ext z2.b, z2.b, z1.b, #16;
ext z1.b, z1.b, z0.b, #16;
ext z0.b, z0.b, RTMP0.b, #16;
rev z7.b, z7.b;
rev z6.b, z6.b;
rev z5.b, z5.b;
rev z4.b, z4.b;
rev z3.b, z3.b;
rev z2.b, z2.b;
rev z1.b, z1.b;
rev z0.b, z0.b;
mov RIV.d, z8.d;
SM4_SVE_CE_CRYPT_BLK8(z15, z14, z13, z12, z11, z10, z9, z8);
eor z0.d, z0.d, z15.d;
eor z1.d, z1.d, z14.d;
eor z2.d, z2.d, z13.d;
eor z3.d, z3.d, z12.d;
eor z4.d, z4.d, z11.d;
eor z5.d, z5.d, z10.d;
eor z6.d, z6.d, z9.d;
eor z7.d, z7.d, z8.d;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
st1b {z4.b}, p0, [x1, #4, MUL VL];
st1b {z5.b}, p0, [x1, #5, MUL VL];
st1b {z6.b}, p0, [x1, #6, MUL VL];
st1b {z7.b}, p0, [x1, #7, MUL VL];
addvl x2, x2, #8;
addvl x1, x1, #8;
cbz x4, .Lcbc_end;
b .Lcbc_loop_blks;
.Lcbc_tail8:
add x4, x4, x5, LSR #1;
cmp x4, x5, LSR #2;
blt .Lcbc_tail4;
sub x4, x4, x5, LSR #2; /* x4 - (4 * VL) */
ld1b {z15.b}, p0/z, [x2];
ld1b {z14.b}, p0/z, [x2, #1, MUL VL];
ld1b {z13.b}, p0/z, [x2, #2, MUL VL];
ld1b {z12.b}, p0/z, [x2, #3, MUL VL];
rev z0.b, z15.b;
rev z1.b, z14.b;
rev z2.b, z13.b;
rev z3.b, z12.b;
rev RTMP0.b, RIV.b;
ext z3.b, z3.b, z2.b, #16;
ext z2.b, z2.b, z1.b, #16;
ext z1.b, z1.b, z0.b, #16;
ext z0.b, z0.b, RTMP0.b, #16;
rev z3.b, z3.b;
rev z2.b, z2.b;
rev z1.b, z1.b;
rev z0.b, z0.b;
mov RIV.d, z12.d;
SM4_SVE_CE_CRYPT_BLK4(z15, z14, z13, z12);
eor z0.d, z0.d, z15.d;
eor z1.d, z1.d, z14.d;
eor z2.d, z2.d, z13.d;
eor z3.d, z3.d, z12.d;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
addvl x2, x2, #4;
addvl x1, x1, #4;
cbz x4, .Lcbc_end;
.Lcbc_tail4:
cmp x4, x5, LSR #4;
blt .Lcbc_tail_ce;
sub x4, x4, x5, LSR #4; /* x4 - VL */
ld1b {z15.b}, p0/z, [x2];
rev RTMP0.b, RIV.b;
rev z0.b, z15.b;
ext z0.b, z0.b, RTMP0.b, #16;
rev z0.b, z0.b;
mov RIV.d, z15.d;
SM4_SVE_CE_CRYPT_BLK(z15);
eor z0.d, z0.d, z15.d;
st1b {z0.b}, p0, [x1];
addvl x2, x2, #1;
addvl x1, x1, #1;
cbz x4, .Lcbc_end;
b .Lcbc_tail4;
.Lcbc_tail_ce:
rev RIV.s, RIV.s;
tbl RIV.b, {RIV.b}, RSWAP128.b;
.Lcbc_tail:
sub x4, x4, #1;
ld1 {v15.16b}, [x2], #16;
mov v0.16b, RIVv.16b;
mov RIVv.16b, v15.16b;
SM4_CE_CRYPT_BLK(v15);
eor v0.16b, v0.16b, v15.16b;
st1 {v0.16b}, [x1], #16;
cbnz x4, .Lcbc_tail;
ext RIV.b, RIV.b, RIV.b, #16;
.Lcbc_end:
/* store new IV */
rev RIV.s, RIV.s;
tbl RIV.b, {RIV.b}, RSWAP128.b;
st1 {RIVv.16b}, [x3];
VPOP_ABI;
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_armv9_sve_ce_cbc_dec,.-_gcry_sm4_armv9_sve_ce_cbc_dec;)
.align 4
.global _gcry_sm4_armv9_sve_ce_cfb_dec
ELF(.type _gcry_sm4_armv9_sve_ce_cfb_dec,%function;)
_gcry_sm4_armv9_sve_ce_cfb_dec:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: iv (big endian, 128 bit)
* x4: nblocks
*/
CFI_STARTPROC();
VPUSH_ABI;
PREPARE();
ld1 {RIVv.16b}, [x3];
ext RIV.b, RIV.b, RIV.b, #16;
.Lcfb_loop_blks:
sub x4, x4, x5, LSR #1; /* x4 - (8 * VL) */
tbnz x4, #63, .Lcfb_tail8;
ld1b {z15.b}, p0/z, [x2];
ld1b {z14.b}, p0/z, [x2, #1, MUL VL];
ld1b {z13.b}, p0/z, [x2, #2, MUL VL];
ld1b {z12.b}, p0/z, [x2, #3, MUL VL];
ld1b {z11.b}, p0/z, [x2, #4, MUL VL];
ld1b {z10.b}, p0/z, [x2, #5, MUL VL];
ld1b {z9.b}, p0/z, [x2, #6, MUL VL];
ld1b {z8.b}, p0/z, [x2, #7, MUL VL];
rev z0.b, z15.b;
rev z1.b, z14.b;
rev z2.b, z13.b;
rev z3.b, z12.b;
rev z4.b, z11.b;
rev z5.b, z10.b;
rev z6.b, z9.b;
rev z7.b, z8.b;
rev RTMP0.b, RIV.b;
ext z7.b, z7.b, z6.b, #16;
ext z6.b, z6.b, z5.b, #16;
ext z5.b, z5.b, z4.b, #16;
ext z4.b, z4.b, z3.b, #16;
ext z3.b, z3.b, z2.b, #16;
ext z2.b, z2.b, z1.b, #16;
ext z1.b, z1.b, z0.b, #16;
ext z0.b, z0.b, RTMP0.b, #16;
rev z7.b, z7.b;
rev z6.b, z6.b;
rev z5.b, z5.b;
rev z4.b, z4.b;
rev z3.b, z3.b;
rev z2.b, z2.b;
rev z1.b, z1.b;
rev z0.b, z0.b;
mov RIV.d, z8.d;
SM4_SVE_CE_CRYPT_BLK8(z0, z1, z2, z3, z4, z5, z6, z7);
eor z0.d, z0.d, z15.d;
eor z1.d, z1.d, z14.d;
eor z2.d, z2.d, z13.d;
eor z3.d, z3.d, z12.d;
eor z4.d, z4.d, z11.d;
eor z5.d, z5.d, z10.d;
eor z6.d, z6.d, z9.d;
eor z7.d, z7.d, z8.d;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
st1b {z4.b}, p0, [x1, #4, MUL VL];
st1b {z5.b}, p0, [x1, #5, MUL VL];
st1b {z6.b}, p0, [x1, #6, MUL VL];
st1b {z7.b}, p0, [x1, #7, MUL VL];
addvl x2, x2, #8;
addvl x1, x1, #8;
cbz x4, .Lcfb_end;
b .Lcfb_loop_blks;
.Lcfb_tail8:
add x4, x4, x5, LSR #1;
cmp x4, x5, LSR #2;
blt .Lcfb_tail4;
sub x4, x4, x5, LSR #2; /* x4 - (4 * VL) */
ld1b {z15.b}, p0/z, [x2];
ld1b {z14.b}, p0/z, [x2, #1, MUL VL];
ld1b {z13.b}, p0/z, [x2, #2, MUL VL];
ld1b {z12.b}, p0/z, [x2, #3, MUL VL];
rev z0.b, z15.b;
rev z1.b, z14.b;
rev z2.b, z13.b;
rev z3.b, z12.b;
rev RTMP0.b, RIV.b;
ext z3.b, z3.b, z2.b, #16;
ext z2.b, z2.b, z1.b, #16;
ext z1.b, z1.b, z0.b, #16;
ext z0.b, z0.b, RTMP0.b, #16;
rev z3.b, z3.b;
rev z2.b, z2.b;
rev z1.b, z1.b;
rev z0.b, z0.b;
mov RIV.d, z12.d;
SM4_SVE_CE_CRYPT_BLK4(z0, z1, z2, z3);
eor z0.d, z0.d, z15.d;
eor z1.d, z1.d, z14.d;
eor z2.d, z2.d, z13.d;
eor z3.d, z3.d, z12.d;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
addvl x2, x2, #4;
addvl x1, x1, #4;
cbz x4, .Lcfb_end;
.Lcfb_tail4:
cmp x4, x5, LSR #4;
blt .Lcfb_tail_ce;
sub x4, x4, x5, LSR #4; /* x4 - VL */
ld1b {z15.b}, p0/z, [x2];
rev RTMP0.b, RIV.b;
rev z0.b, z15.b;
ext z0.b, z0.b, RTMP0.b, #16;
rev z0.b, z0.b;
mov RIV.d, z15.d;
SM4_SVE_CE_CRYPT_BLK(z0);
eor z0.d, z0.d, z15.d;
st1b {z0.b}, p0, [x1];
addvl x2, x2, #1;
addvl x1, x1, #1;
cbz x4, .Lcfb_end;
b .Lcfb_tail4;
.Lcfb_tail_ce:
rev RIV.s, RIV.s;
tbl RIV.b, {RIV.b}, RSWAP128.b;
.Lcfb_tail:
sub x4, x4, #1;
ld1 {v15.16b}, [x2], #16;
mov v0.16b, RIVv.16b;
mov RIVv.16b, v15.16b;
SM4_CE_CRYPT_BLK(v0);
eor v0.16b, v0.16b, v15.16b;
st1 {v0.16b}, [x1], #16;
cbnz x4, .Lcfb_tail;
ext RIV.b, RIV.b, RIV.b, #16;
.Lcfb_end:
/* store new IV */
rev RIV.s, RIV.s;
tbl RIV.b, {RIV.b}, RSWAP128.b;
st1 {RIVv.16b}, [x3];
VPOP_ABI;
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_armv9_sve_ce_cfb_dec,.-_gcry_sm4_armv9_sve_ce_cfb_dec;)
.align 4
.global _gcry_sm4_armv9_sve_ce_ctr_enc
ELF(.type _gcry_sm4_armv9_sve_ce_ctr_enc,%function;)
_gcry_sm4_armv9_sve_ce_ctr_enc:
/* input:
* x0: round key array, CTX
* x1: dst
* x2: src
* x3: ctr (big endian, 128 bit)
* x4: nblocks
*/
CFI_STARTPROC();
PREPARE();
dup RZERO.d, #0;
GET_DATA_POINTER(x6, .Lle128_inc);
ld1b {RLE128_INC.b}, p0/z, [x6];
ldp x7, x8, [x3];
rev x7, x7;
rev x8, x8;
#define inc_le128(zctr) \
mov RCTRv.d[1], x8; \
mov RCTRv.d[0], x7; \
mov zctr.d, RLE128_INC.d; \
dup RCTR.q, RCTR.q[0]; \
adds x8, x8, x5, LSR #4; \
adc x7, x7, xzr; \
adclt zctr.d, RCTR.d, RZERO.d; \
adclt RCTR.d, zctr.d, RZERO.d; \
trn1 zctr.d, RCTR.d, zctr.d; \
revb zctr.d, p0/m, zctr.d;
.Lctr_loop_blks:
sub x4, x4, x5, LSR #1; /* x4 - (8 * VL) */
tbnz x4, #63, .Lctr_tail8;
inc_le128(z0);
inc_le128(z1);
inc_le128(z2);
inc_le128(z3);
inc_le128(z4);
inc_le128(z5);
inc_le128(z6);
inc_le128(z7);
SM4_SVE_CE_CRYPT_BLK8(z0, z1, z2, z3, z4, z5, z6, z7);
ld1b {RTMP0.b}, p0/z, [x2];
ld1b {RTMP1.b}, p0/z, [x2, #1, MUL VL];
ld1b {RTMP2.b}, p0/z, [x2, #2, MUL VL];
ld1b {RTMP3.b}, p0/z, [x2, #3, MUL VL];
eor z0.d, z0.d, RTMP0.d;
eor z1.d, z1.d, RTMP1.d;
eor z2.d, z2.d, RTMP2.d;
eor z3.d, z3.d, RTMP3.d;
ld1b {RTMP0.b}, p0/z, [x2, #4, MUL VL];
ld1b {RTMP1.b}, p0/z, [x2, #5, MUL VL];
ld1b {RTMP2.b}, p0/z, [x2, #6, MUL VL];
ld1b {RTMP3.b}, p0/z, [x2, #7, MUL VL];
eor z4.d, z4.d, RTMP0.d;
eor z5.d, z5.d, RTMP1.d;
eor z6.d, z6.d, RTMP2.d;
eor z7.d, z7.d, RTMP3.d;
addvl x2, x2, #8;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
st1b {z4.b}, p0, [x1, #4, MUL VL];
st1b {z5.b}, p0, [x1, #5, MUL VL];
st1b {z6.b}, p0, [x1, #6, MUL VL];
st1b {z7.b}, p0, [x1, #7, MUL VL];
addvl x1, x1, #8;
cbz x4, .Lctr_end;
b .Lctr_loop_blks;
.Lctr_tail8:
add x4, x4, x5, LSR #1;
cmp x4, x5, LSR #2;
blt .Lctr_tail4;
sub x4, x4, x5, LSR #2; /* x4 - (4 * VL) */
inc_le128(z0);
inc_le128(z1);
inc_le128(z2);
inc_le128(z3);
SM4_SVE_CE_CRYPT_BLK4(z0, z1, z2, z3);
ld1b {RTMP0.b}, p0/z, [x2];
ld1b {RTMP1.b}, p0/z, [x2, #1, MUL VL];
ld1b {RTMP2.b}, p0/z, [x2, #2, MUL VL];
ld1b {RTMP3.b}, p0/z, [x2, #3, MUL VL];
eor z0.d, z0.d, RTMP0.d;
eor z1.d, z1.d, RTMP1.d;
eor z2.d, z2.d, RTMP2.d;
eor z3.d, z3.d, RTMP3.d;
st1b {z0.b}, p0, [x1];
st1b {z1.b}, p0, [x1, #1, MUL VL];
st1b {z2.b}, p0, [x1, #2, MUL VL];
st1b {z3.b}, p0, [x1, #3, MUL VL];
addvl x2, x2, #4;
addvl x1, x1, #4;
cbz x4, .Lctr_end;
.Lctr_tail4:
cmp x4, x5, LSR #4;
blt .Lctr_tail;
sub x4, x4, x5, LSR #4; /* x4 - VL */
inc_le128(z0);
SM4_SVE_CE_CRYPT_BLK(z0);
ld1b {RTMP0.b}, p0/z, [x2];
eor z0.d, z0.d, RTMP0.d;
st1b {z0.b}, p0, [x1];
addvl x2, x2, #1;
addvl x1, x1, #1;
cbz x4, .Lctr_end;
b .Lctr_tail4;
.Lctr_tail:
sub x4, x4, #1;
/* inc_le128 for CE */
mov v0.d[1], x8;
mov v0.d[0], x7;
adds x8, x8, #1;
adc x7, x7, xzr;
rev64 v0.16b, v0.16b;
SM4_CE_CRYPT_BLK(v0);
ld1 {RTMP0v.16b}, [x2], #16;
eor v0.16b, v0.16b, RTMP0v.16b;
st1 {v0.16b}, [x1], #16;
cbnz x4, .Lctr_tail;
.Lctr_end:
/* store new CTR */
rev x7, x7;
rev x8, x8;
stp x7, x8, [x3];
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_armv9_sve_ce_ctr_enc,.-_gcry_sm4_armv9_sve_ce_ctr_enc;)
.align 4
.global _gcry_sm4_armv9_sve_get_vl
ELF(.type _gcry_sm4_armv9_sve_get_vl,%function;)
_gcry_sm4_armv9_sve_get_vl:
CFI_STARTPROC();
/* VL in bytes */
rdvl x0, #1;
ret_spec_stop;
CFI_ENDPROC();
ELF(.size _gcry_sm4_armv9_sve_get_vl,.-_gcry_sm4_armv9_sve_get_vl;)
#endif
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