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

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   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Shared glue code for 128bit block ciphers, AVX assembler macros
   4  *
   5  * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
   6  */
   7 
   8 #define load_8way(src, x0, x1, x2, x3, x4, x5, x6, x7) \
   9         vmovdqu (0*16)(src), x0; \
  10         vmovdqu (1*16)(src), x1; \
  11         vmovdqu (2*16)(src), x2; \
  12         vmovdqu (3*16)(src), x3; \
  13         vmovdqu (4*16)(src), x4; \
  14         vmovdqu (5*16)(src), x5; \
  15         vmovdqu (6*16)(src), x6; \
  16         vmovdqu (7*16)(src), x7;
  17 
  18 #define store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
  19         vmovdqu x0, (0*16)(dst); \
  20         vmovdqu x1, (1*16)(dst); \
  21         vmovdqu x2, (2*16)(dst); \
  22         vmovdqu x3, (3*16)(dst); \
  23         vmovdqu x4, (4*16)(dst); \
  24         vmovdqu x5, (5*16)(dst); \
  25         vmovdqu x6, (6*16)(dst); \
  26         vmovdqu x7, (7*16)(dst);
  27 
  28 #define store_cbc_8way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \
  29         vpxor (0*16)(src), x1, x1; \
  30         vpxor (1*16)(src), x2, x2; \
  31         vpxor (2*16)(src), x3, x3; \
  32         vpxor (3*16)(src), x4, x4; \
  33         vpxor (4*16)(src), x5, x5; \
  34         vpxor (5*16)(src), x6, x6; \
  35         vpxor (6*16)(src), x7, x7; \
  36         store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
  37 
  38 #define inc_le128(x, minus_one, tmp) \
  39         vpcmpeqq minus_one, x, tmp; \
  40         vpsubq minus_one, x, x; \
  41         vpslldq $8, tmp, tmp; \
  42         vpsubq tmp, x, x;
  43 
  44 #define load_ctr_8way(iv, bswap, x0, x1, x2, x3, x4, x5, x6, x7, t0, t1, t2) \
  45         vpcmpeqd t0, t0, t0; \
  46         vpsrldq $8, t0, t0; /* low: -1, high: 0 */ \
  47         vmovdqa bswap, t1; \
  48         \
  49         /* load IV and byteswap */ \
  50         vmovdqu (iv), x7; \
  51         vpshufb t1, x7, x0; \
  52         \
  53         /* construct IVs */ \
  54         inc_le128(x7, t0, t2); \
  55         vpshufb t1, x7, x1; \
  56         inc_le128(x7, t0, t2); \
  57         vpshufb t1, x7, x2; \
  58         inc_le128(x7, t0, t2); \
  59         vpshufb t1, x7, x3; \
  60         inc_le128(x7, t0, t2); \
  61         vpshufb t1, x7, x4; \
  62         inc_le128(x7, t0, t2); \
  63         vpshufb t1, x7, x5; \
  64         inc_le128(x7, t0, t2); \
  65         vpshufb t1, x7, x6; \
  66         inc_le128(x7, t0, t2); \
  67         vmovdqa x7, t2; \
  68         vpshufb t1, x7, x7; \
  69         inc_le128(t2, t0, t1); \
  70         vmovdqu t2, (iv);
  71 
  72 #define store_ctr_8way(src, dst, x0, x1, x2, x3, x4, x5, x6, x7) \
  73         vpxor (0*16)(src), x0, x0; \
  74         vpxor (1*16)(src), x1, x1; \
  75         vpxor (2*16)(src), x2, x2; \
  76         vpxor (3*16)(src), x3, x3; \
  77         vpxor (4*16)(src), x4, x4; \
  78         vpxor (5*16)(src), x5, x5; \
  79         vpxor (6*16)(src), x6, x6; \
  80         vpxor (7*16)(src), x7, x7; \
  81         store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);
  82 
  83 #define gf128mul_x_ble(iv, mask, tmp) \
  84         vpsrad $31, iv, tmp; \
  85         vpaddq iv, iv, iv; \
  86         vpshufd $0x13, tmp, tmp; \
  87         vpand mask, tmp, tmp; \
  88         vpxor tmp, iv, iv;
  89 
  90 #define load_xts_8way(iv, src, dst, x0, x1, x2, x3, x4, x5, x6, x7, tiv, t0, \
  91                       t1, xts_gf128mul_and_shl1_mask) \
  92         vmovdqa xts_gf128mul_and_shl1_mask, t0; \
  93         \
  94         /* load IV */ \
  95         vmovdqu (iv), tiv; \
  96         vpxor (0*16)(src), tiv, x0; \
  97         vmovdqu tiv, (0*16)(dst); \
  98         \
  99         /* construct and store IVs, also xor with source */ \
 100         gf128mul_x_ble(tiv, t0, t1); \
 101         vpxor (1*16)(src), tiv, x1; \
 102         vmovdqu tiv, (1*16)(dst); \
 103         \
 104         gf128mul_x_ble(tiv, t0, t1); \
 105         vpxor (2*16)(src), tiv, x2; \
 106         vmovdqu tiv, (2*16)(dst); \
 107         \
 108         gf128mul_x_ble(tiv, t0, t1); \
 109         vpxor (3*16)(src), tiv, x3; \
 110         vmovdqu tiv, (3*16)(dst); \
 111         \
 112         gf128mul_x_ble(tiv, t0, t1); \
 113         vpxor (4*16)(src), tiv, x4; \
 114         vmovdqu tiv, (4*16)(dst); \
 115         \
 116         gf128mul_x_ble(tiv, t0, t1); \
 117         vpxor (5*16)(src), tiv, x5; \
 118         vmovdqu tiv, (5*16)(dst); \
 119         \
 120         gf128mul_x_ble(tiv, t0, t1); \
 121         vpxor (6*16)(src), tiv, x6; \
 122         vmovdqu tiv, (6*16)(dst); \
 123         \
 124         gf128mul_x_ble(tiv, t0, t1); \
 125         vpxor (7*16)(src), tiv, x7; \
 126         vmovdqu tiv, (7*16)(dst); \
 127         \
 128         gf128mul_x_ble(tiv, t0, t1); \
 129         vmovdqu tiv, (iv);
 130 
 131 #define store_xts_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7) \
 132         vpxor (0*16)(dst), x0, x0; \
 133         vpxor (1*16)(dst), x1, x1; \
 134         vpxor (2*16)(dst), x2, x2; \
 135         vpxor (3*16)(dst), x3, x3; \
 136         vpxor (4*16)(dst), x4, x4; \
 137         vpxor (5*16)(dst), x5, x5; \
 138         vpxor (6*16)(dst), x6, x6; \
 139         vpxor (7*16)(dst), x7, x7; \
 140         store_8way(dst, x0, x1, x2, x3, x4, x5, x6, x7);

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