root/arch/x86/crypto/glue_helper-asm-avx2.S

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   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Shared glue code for 128bit block ciphers, AVX2 assembler macros
   4  *
   5  * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   6  */
   7 
   8 #define load_16way(src, x0, x1, x2, x3, x4, x5, x6, x7) \
   9         vmovdqu (0*32)(src), x0; \
  10         vmovdqu (1*32)(src), x1; \
  11         vmovdqu (2*32)(src), x2; \
  12         vmovdqu (3*32)(src), x3; \
  13         vmovdqu (4*32)(src), x4; \
  14         vmovdqu (5*32)(src), x5; \
  15         vmovdqu (6*32)(src), x6; \
  16         vmovdqu (7*32)(src), x7;
  17 
  18 #define store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
  19         vmovdqu x0, (0*32)(dst); \
  20         vmovdqu x1, (1*32)(dst); \
  21         vmovdqu x2, (2*32)(dst); \
  22         vmovdqu x3, (3*32)(dst); \
  23         vmovdqu x4, (4*32)(dst); \
  24         vmovdqu x5, (5*32)(dst); \
  25         vmovdqu x6, (6*32)(dst); \
  26         vmovdqu x7, (7*32)(dst);
  27 
  28 #define store_cbc_16way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7, t0) \
  29         vpxor t0, t0, t0; \
  30         vinserti128 $1, (src), t0, t0; \
  31         vpxor t0, x0, x0; \
  32         vpxor (0*32+16)(src), x1, x1; \
  33         vpxor (1*32+16)(src), x2, x2; \
  34         vpxor (2*32+16)(src), x3, x3; \
  35         vpxor (3*32+16)(src), x4, x4; \
  36         vpxor (4*32+16)(src), x5, x5; \
  37         vpxor (5*32+16)(src), x6, x6; \
  38         vpxor (6*32+16)(src), x7, x7; \
  39         store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
  40 
  41 #define inc_le128(x, minus_one, tmp) \
  42         vpcmpeqq minus_one, x, tmp; \
  43         vpsubq minus_one, x, x; \
  44         vpslldq $8, tmp, tmp; \
  45         vpsubq tmp, x, x;
  46 
  47 #define add2_le128(x, minus_one, minus_two, tmp1, tmp2) \
  48         vpcmpeqq minus_one, x, tmp1; \
  49         vpcmpeqq minus_two, x, tmp2; \
  50         vpsubq minus_two, x, x; \
  51         vpor tmp2, tmp1, tmp1; \
  52         vpslldq $8, tmp1, tmp1; \
  53         vpsubq tmp1, x, x;
  54 
  55 #define load_ctr_16way(iv, bswap, x0, x1, x2, x3, x4, x5, x6, x7, t0, t0x, t1, \
  56                        t1x, t2, t2x, t3, t3x, t4, t5) \
  57         vpcmpeqd t0, t0, t0; \
  58         vpsrldq $8, t0, t0; /* ab: -1:0 ; cd: -1:0 */ \
  59         vpaddq t0, t0, t4; /* ab: -2:0 ; cd: -2:0 */\
  60         \
  61         /* load IV and byteswap */ \
  62         vmovdqu (iv), t2x; \
  63         vmovdqa t2x, t3x; \
  64         inc_le128(t2x, t0x, t1x); \
  65         vbroadcasti128 bswap, t1; \
  66         vinserti128 $1, t2x, t3, t2; /* ab: le0 ; cd: le1 */ \
  67         vpshufb t1, t2, x0; \
  68         \
  69         /* construct IVs */ \
  70         add2_le128(t2, t0, t4, t3, t5); /* ab: le2 ; cd: le3 */ \
  71         vpshufb t1, t2, x1; \
  72         add2_le128(t2, t0, t4, t3, t5); \
  73         vpshufb t1, t2, x2; \
  74         add2_le128(t2, t0, t4, t3, t5); \
  75         vpshufb t1, t2, x3; \
  76         add2_le128(t2, t0, t4, t3, t5); \
  77         vpshufb t1, t2, x4; \
  78         add2_le128(t2, t0, t4, t3, t5); \
  79         vpshufb t1, t2, x5; \
  80         add2_le128(t2, t0, t4, t3, t5); \
  81         vpshufb t1, t2, x6; \
  82         add2_le128(t2, t0, t4, t3, t5); \
  83         vpshufb t1, t2, x7; \
  84         vextracti128 $1, t2, t2x; \
  85         inc_le128(t2x, t0x, t3x); \
  86         vmovdqu t2x, (iv);
  87 
  88 #define store_ctr_16way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \
  89         vpxor (0*32)(src), x0, x0; \
  90         vpxor (1*32)(src), x1, x1; \
  91         vpxor (2*32)(src), x2, x2; \
  92         vpxor (3*32)(src), x3, x3; \
  93         vpxor (4*32)(src), x4, x4; \
  94         vpxor (5*32)(src), x5, x5; \
  95         vpxor (6*32)(src), x6, x6; \
  96         vpxor (7*32)(src), x7, x7; \
  97         store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
  98 
  99 #define gf128mul_x_ble(iv, mask, tmp) \
 100         vpsrad $31, iv, tmp; \
 101         vpaddq iv, iv, iv; \
 102         vpshufd $0x13, tmp, tmp; \
 103         vpand mask, tmp, tmp; \
 104         vpxor tmp, iv, iv;
 105 
 106 #define gf128mul_x2_ble(iv, mask1, mask2, tmp0, tmp1) \
 107         vpsrad $31, iv, tmp0; \
 108         vpaddq iv, iv, tmp1; \
 109         vpsllq $2, iv, iv; \
 110         vpshufd $0x13, tmp0, tmp0; \
 111         vpsrad $31, tmp1, tmp1; \
 112         vpand mask2, tmp0, tmp0; \
 113         vpshufd $0x13, tmp1, tmp1; \
 114         vpxor tmp0, iv, iv; \
 115         vpand mask1, tmp1, tmp1; \
 116         vpxor tmp1, iv, iv;
 117 
 118 #define load_xts_16way(iv, src, dst, x0, x1, x2, x3, x4, x5, x6, x7, tiv, \
 119                        tivx, t0, t0x, t1, t1x, t2, t2x, t3, \
 120                        xts_gf128mul_and_shl1_mask_0, \
 121                        xts_gf128mul_and_shl1_mask_1) \
 122         vbroadcasti128 xts_gf128mul_and_shl1_mask_0, t1; \
 123         \
 124         /* load IV and construct second IV */ \
 125         vmovdqu (iv), tivx; \
 126         vmovdqa tivx, t0x; \
 127         gf128mul_x_ble(tivx, t1x, t2x); \
 128         vbroadcasti128 xts_gf128mul_and_shl1_mask_1, t2; \
 129         vinserti128 $1, tivx, t0, tiv; \
 130         vpxor (0*32)(src), tiv, x0; \
 131         vmovdqu tiv, (0*32)(dst); \
 132         \
 133         /* construct and store IVs, also xor with source */ \
 134         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 135         vpxor (1*32)(src), tiv, x1; \
 136         vmovdqu tiv, (1*32)(dst); \
 137         \
 138         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 139         vpxor (2*32)(src), tiv, x2; \
 140         vmovdqu tiv, (2*32)(dst); \
 141         \
 142         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 143         vpxor (3*32)(src), tiv, x3; \
 144         vmovdqu tiv, (3*32)(dst); \
 145         \
 146         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 147         vpxor (4*32)(src), tiv, x4; \
 148         vmovdqu tiv, (4*32)(dst); \
 149         \
 150         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 151         vpxor (5*32)(src), tiv, x5; \
 152         vmovdqu tiv, (5*32)(dst); \
 153         \
 154         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 155         vpxor (6*32)(src), tiv, x6; \
 156         vmovdqu tiv, (6*32)(dst); \
 157         \
 158         gf128mul_x2_ble(tiv, t1, t2, t0, t3); \
 159         vpxor (7*32)(src), tiv, x7; \
 160         vmovdqu tiv, (7*32)(dst); \
 161         \
 162         vextracti128 $1, tiv, tivx; \
 163         gf128mul_x_ble(tivx, t1x, t2x); \
 164         vmovdqu tivx, (iv);
 165 
 166 #define store_xts_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
 167         vpxor (0*32)(dst), x0, x0; \
 168         vpxor (1*32)(dst), x1, x1; \
 169         vpxor (2*32)(dst), x2, x2; \
 170         vpxor (3*32)(dst), x3, x3; \
 171         vpxor (4*32)(dst), x4, x4; \
 172         vpxor (5*32)(dst), x5, x5; \
 173         vpxor (6*32)(dst), x6, x6; \
 174         vpxor (7*32)(dst), x7, x7; \
 175         store_16way(dst, x0, x1, x2, x3, x4, x5, x6, x7);

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