root/arch/powerpc/crypto/md5-asm.S

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   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Fast MD5 implementation for PPC
   4  *
   5  * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
   6  */
   7 #include <asm/ppc_asm.h>
   8 #include <asm/asm-offsets.h>
   9 #include <asm/asm-compat.h>
  10 
  11 #define rHP     r3
  12 #define rWP     r4
  13 
  14 #define rH0     r0
  15 #define rH1     r6
  16 #define rH2     r7
  17 #define rH3     r5
  18 
  19 #define rW00    r8
  20 #define rW01    r9
  21 #define rW02    r10
  22 #define rW03    r11
  23 #define rW04    r12
  24 #define rW05    r14
  25 #define rW06    r15
  26 #define rW07    r16
  27 #define rW08    r17
  28 #define rW09    r18
  29 #define rW10    r19
  30 #define rW11    r20
  31 #define rW12    r21
  32 #define rW13    r22
  33 #define rW14    r23
  34 #define rW15    r24
  35 
  36 #define rT0     r25
  37 #define rT1     r26
  38 
  39 #define INITIALIZE \
  40         PPC_STLU r1,-INT_FRAME_SIZE(r1); \
  41         SAVE_8GPRS(14, r1);             /* push registers onto stack    */ \
  42         SAVE_4GPRS(22, r1);                                                \
  43         SAVE_GPR(26, r1)
  44 
  45 #define FINALIZE \
  46         REST_8GPRS(14, r1);             /* pop registers from stack     */ \
  47         REST_4GPRS(22, r1);                                                \
  48         REST_GPR(26, r1);                                                  \
  49         addi    r1,r1,INT_FRAME_SIZE;
  50 
  51 #ifdef __BIG_ENDIAN__
  52 #define LOAD_DATA(reg, off) \
  53         lwbrx           reg,0,rWP;      /* load data                    */
  54 #define INC_PTR \
  55         addi            rWP,rWP,4;      /* increment per word           */
  56 #define NEXT_BLOCK                      /* nothing to do                */
  57 #else
  58 #define LOAD_DATA(reg, off) \
  59         lwz             reg,off(rWP);   /* load data                    */
  60 #define INC_PTR                         /* nothing to do                */
  61 #define NEXT_BLOCK \
  62         addi            rWP,rWP,64;     /* increment per block          */
  63 #endif
  64 
  65 #define R_00_15(a, b, c, d, w0, w1, p, q, off, k0h, k0l, k1h, k1l) \
  66         LOAD_DATA(w0, off)              /*    W                         */ \
  67         and             rT0,b,c;        /* 1: f = b and c               */ \
  68         INC_PTR                         /*    ptr++                     */ \
  69         andc            rT1,d,b;        /* 1: f' = ~b and d             */ \
  70         LOAD_DATA(w1, off+4)            /*    W                         */ \
  71         or              rT0,rT0,rT1;    /* 1: f = f or f'               */ \
  72         addi            w0,w0,k0l;      /* 1: wk = w + k                */ \
  73         add             a,a,rT0;        /* 1: a = a + f                 */ \
  74         addis           w0,w0,k0h;      /* 1: wk = w + k'               */ \
  75         addis           w1,w1,k1h;      /* 2: wk = w + k                */ \
  76         add             a,a,w0;         /* 1: a = a + wk                */ \
  77         addi            w1,w1,k1l;      /* 2: wk = w + k'               */ \
  78         rotrwi          a,a,p;          /* 1: a = a rotl x              */ \
  79         add             d,d,w1;         /* 2: a = a + wk                */ \
  80         add             a,a,b;          /* 1: a = a + b                 */ \
  81         and             rT0,a,b;        /* 2: f = b and c               */ \
  82         andc            rT1,c,a;        /* 2: f' = ~b and d             */ \
  83         or              rT0,rT0,rT1;    /* 2: f = f or f'               */ \
  84         add             d,d,rT0;        /* 2: a = a + f                 */ \
  85         INC_PTR                         /*    ptr++                     */ \
  86         rotrwi          d,d,q;          /* 2: a = a rotl x              */ \
  87         add             d,d,a;          /* 2: a = a + b                 */
  88 
  89 #define R_16_31(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
  90         andc            rT0,c,d;        /* 1: f = c and ~d              */ \
  91         and             rT1,b,d;        /* 1: f' = b and d              */ \
  92         addi            w0,w0,k0l;      /* 1: wk = w + k                */ \
  93         or              rT0,rT0,rT1;    /* 1: f = f or f'               */ \
  94         addis           w0,w0,k0h;      /* 1: wk = w + k'               */ \
  95         add             a,a,rT0;        /* 1: a = a + f                 */ \
  96         addi            w1,w1,k1l;      /* 2: wk = w + k                */ \
  97         add             a,a,w0;         /* 1: a = a + wk                */ \
  98         addis           w1,w1,k1h;      /* 2: wk = w + k'               */ \
  99         andc            rT0,b,c;        /* 2: f = c and ~d              */ \
 100         rotrwi          a,a,p;          /* 1: a = a rotl x              */ \
 101         add             a,a,b;          /* 1: a = a + b                 */ \
 102         add             d,d,w1;         /* 2: a = a + wk                */ \
 103         and             rT1,a,c;        /* 2: f' = b and d              */ \
 104         or              rT0,rT0,rT1;    /* 2: f = f or f'               */ \
 105         add             d,d,rT0;        /* 2: a = a + f                 */ \
 106         rotrwi          d,d,q;          /* 2: a = a rotl x              */ \
 107         add             d,d,a;          /* 2: a = a +b                  */
 108 
 109 #define R_32_47(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
 110         xor             rT0,b,c;        /* 1: f' = b xor c              */ \
 111         addi            w0,w0,k0l;      /* 1: wk = w + k                */ \
 112         xor             rT1,rT0,d;      /* 1: f = f xor f'              */ \
 113         addis           w0,w0,k0h;      /* 1: wk = w + k'               */ \
 114         add             a,a,rT1;        /* 1: a = a + f                 */ \
 115         addi            w1,w1,k1l;      /* 2: wk = w + k                */ \
 116         add             a,a,w0;         /* 1: a = a + wk                */ \
 117         addis           w1,w1,k1h;      /* 2: wk = w + k'               */ \
 118         rotrwi          a,a,p;          /* 1: a = a rotl x              */ \
 119         add             d,d,w1;         /* 2: a = a + wk                */ \
 120         add             a,a,b;          /* 1: a = a + b                 */ \
 121         xor             rT1,rT0,a;      /* 2: f = b xor f'              */ \
 122         add             d,d,rT1;        /* 2: a = a + f                 */ \
 123         rotrwi          d,d,q;          /* 2: a = a rotl x              */ \
 124         add             d,d,a;          /* 2: a = a + b                 */
 125 
 126 #define R_48_63(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \
 127         addi            w0,w0,k0l;      /* 1: w = w + k                 */ \
 128         orc             rT0,b,d;        /* 1: f = b or ~d               */ \
 129         addis           w0,w0,k0h;      /* 1: w = w + k'                */ \
 130         xor             rT0,rT0,c;      /* 1: f = f xor c               */ \
 131         add             a,a,w0;         /* 1: a = a + wk                */ \
 132         addi            w1,w1,k1l;      /* 2: w = w + k                 */ \
 133         add             a,a,rT0;        /* 1: a = a + f                 */ \
 134         addis           w1,w1,k1h;      /* 2: w = w + k'                */ \
 135         rotrwi          a,a,p;          /* 1: a = a rotl x              */ \
 136         add             a,a,b;          /* 1: a = a + b                 */ \
 137         orc             rT0,a,c;        /* 2: f = b or ~d               */ \
 138         add             d,d,w1;         /* 2: a = a + wk                */ \
 139         xor             rT0,rT0,b;      /* 2: f = f xor c               */ \
 140         add             d,d,rT0;        /* 2: a = a + f                 */ \
 141         rotrwi          d,d,q;          /* 2: a = a rotl x              */ \
 142         add             d,d,a;          /* 2: a = a + b                 */
 143 
 144 _GLOBAL(ppc_md5_transform)
 145         INITIALIZE
 146 
 147         mtctr           r5
 148         lwz             rH0,0(rHP)
 149         lwz             rH1,4(rHP)
 150         lwz             rH2,8(rHP)
 151         lwz             rH3,12(rHP)
 152 
 153 ppc_md5_main:
 154         R_00_15(rH0, rH1, rH2, rH3, rW00, rW01, 25, 20, 0,
 155                 0xd76b, -23432, 0xe8c8, -18602)
 156         R_00_15(rH2, rH3, rH0, rH1, rW02, rW03, 15, 10, 8,
 157                 0x2420, 0x70db, 0xc1be, -12562)
 158         R_00_15(rH0, rH1, rH2, rH3, rW04, rW05, 25, 20, 16,
 159                 0xf57c, 0x0faf, 0x4788, -14806)
 160         R_00_15(rH2, rH3, rH0, rH1, rW06, rW07, 15, 10, 24,
 161                 0xa830, 0x4613, 0xfd47, -27391)
 162         R_00_15(rH0, rH1, rH2, rH3, rW08, rW09, 25, 20, 32,
 163                 0x6981, -26408, 0x8b45,  -2129)
 164         R_00_15(rH2, rH3, rH0, rH1, rW10, rW11, 15, 10, 40,
 165                 0xffff, 0x5bb1, 0x895d, -10306)
 166         R_00_15(rH0, rH1, rH2, rH3, rW12, rW13, 25, 20, 48,
 167                 0x6b90, 0x1122, 0xfd98, 0x7193)
 168         R_00_15(rH2, rH3, rH0, rH1, rW14, rW15, 15, 10, 56,
 169                 0xa679, 0x438e, 0x49b4, 0x0821)
 170 
 171         R_16_31(rH0, rH1, rH2, rH3, rW01, rW06, 27, 23,
 172                 0x0d56, 0x6e0c, 0x1810, 0x6d2d)
 173         R_16_31(rH2, rH3, rH0, rH1, rW11, rW00, 18, 12,
 174                 0x9d02, -32109, 0x124c, 0x2332)
 175         R_16_31(rH0, rH1, rH2, rH3, rW05, rW10, 27, 23,
 176                 0x8ea7, 0x4a33, 0x0245, -18270)
 177         R_16_31(rH2, rH3, rH0, rH1, rW15, rW04, 18, 12,
 178                 0x8eee,  -8608, 0xf258,  -5095)
 179         R_16_31(rH0, rH1, rH2, rH3, rW09, rW14, 27, 23,
 180                 0x969d, -10697, 0x1cbe, -15288)
 181         R_16_31(rH2, rH3, rH0, rH1, rW03, rW08, 18, 12,
 182                 0x3317, 0x3e99, 0xdbd9, 0x7c15)
 183         R_16_31(rH0, rH1, rH2, rH3, rW13, rW02, 27, 23,
 184                 0xac4b, 0x7772, 0xd8cf, 0x331d)
 185         R_16_31(rH2, rH3, rH0, rH1, rW07, rW12, 18, 12,
 186                 0x6a28, 0x6dd8, 0x219a, 0x3b68)
 187 
 188         R_32_47(rH0, rH1, rH2, rH3, rW05, rW08, 28, 21,
 189                 0x29cb, 0x28e5, 0x4218,  -7788)
 190         R_32_47(rH2, rH3, rH0, rH1, rW11, rW14, 16,  9,
 191                 0x473f, 0x06d1, 0x3aae, 0x3036)
 192         R_32_47(rH0, rH1, rH2, rH3, rW01, rW04, 28, 21,
 193                 0xaea1, -15134, 0x640b, -11295)
 194         R_32_47(rH2, rH3, rH0, rH1, rW07, rW10, 16,  9,
 195                 0x8f4c, 0x4887, 0xbc7c, -22499)
 196         R_32_47(rH0, rH1, rH2, rH3, rW13, rW00, 28, 21,
 197                 0x7eb8, -27199, 0x00ea, 0x6050)
 198         R_32_47(rH2, rH3, rH0, rH1, rW03, rW06, 16,  9,
 199                 0xe01a, 0x22fe, 0x4447, 0x69c5)
 200         R_32_47(rH0, rH1, rH2, rH3, rW09, rW12, 28, 21,
 201                 0xb7f3, 0x0253, 0x59b1, 0x4d5b)
 202         R_32_47(rH2, rH3, rH0, rH1, rW15, rW02, 16,  9,
 203                 0x4701, -27017, 0xc7bd, -19859)
 204 
 205         R_48_63(rH0, rH1, rH2, rH3, rW00, rW07, 26, 22,
 206                 0x0988,  -1462, 0x4c70, -19401)
 207         R_48_63(rH2, rH3, rH0, rH1, rW14, rW05, 17, 11,
 208                 0xadaf,  -5221, 0xfc99, 0x66f7)
 209         R_48_63(rH0, rH1, rH2, rH3, rW12, rW03, 26, 22,
 210                 0x7e80, -16418, 0xba1e, -25587)
 211         R_48_63(rH2, rH3, rH0, rH1, rW10, rW01, 17, 11,
 212                 0x4130, 0x380d, 0xe0c5, 0x738d)
 213         lwz             rW00,0(rHP)
 214         R_48_63(rH0, rH1, rH2, rH3, rW08, rW15, 26, 22,
 215                 0xe837, -30770, 0xde8a, 0x69e8)
 216         lwz             rW14,4(rHP)
 217         R_48_63(rH2, rH3, rH0, rH1, rW06, rW13, 17, 11,
 218                 0x9e79, 0x260f, 0x256d, -27941)
 219         lwz             rW12,8(rHP)
 220         R_48_63(rH0, rH1, rH2, rH3, rW04, rW11, 26, 22,
 221                 0xab75, -20775, 0x4f9e, -28397)
 222         lwz             rW10,12(rHP)
 223         R_48_63(rH2, rH3, rH0, rH1, rW02, rW09, 17, 11,
 224                 0x662b, 0x7c56, 0x11b2, 0x0358)
 225 
 226         add             rH0,rH0,rW00
 227         stw             rH0,0(rHP)
 228         add             rH1,rH1,rW14
 229         stw             rH1,4(rHP)
 230         add             rH2,rH2,rW12
 231         stw             rH2,8(rHP)
 232         add             rH3,rH3,rW10
 233         stw             rH3,12(rHP)
 234         NEXT_BLOCK
 235 
 236         bdnz            ppc_md5_main
 237 
 238         FINALIZE
 239         blr
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