1 // Copyright 2017 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 #include "textflag.h" 6 7 #define HASHUPDATECHOOSE \ 8 SHA1C V16.S4, V1, V2 \ 9 SHA1H V3, V1 \ 10 VMOV V2.B16, V3.B16 11 12 #define HASHUPDATEPARITY \ 13 SHA1P V16.S4, V1, V2 \ 14 SHA1H V3, V1 \ 15 VMOV V2.B16, V3.B16 16 17 #define HASHUPDATEMAJ \ 18 SHA1M V16.S4, V1, V2 \ 19 SHA1H V3, V1 \ 20 VMOV V2.B16, V3.B16 21 22 // func sha1block(h []uint32, p []byte, k []uint32) 23 TEXT sha1block(SB),NOSPLIT,$0 24 MOVD h_base+0(FP), R0 // hash value first address 25 MOVD p_base+24(FP), R1 // message first address 26 MOVD k_base+48(FP), R2 // k constants first address 27 MOVD p_len+32(FP), R3 // message length 28 VLD1.P 16(R0), [V0.S4] 29 VMOVS (R0), V20 30 SUB $16, R0, R0 31 32 blockloop: 33 34 VLD1.P 16(R1), [V4.B16] // load message 35 VLD1.P 16(R1), [V5.B16] 36 VLD1.P 16(R1), [V6.B16] 37 VLD1.P 16(R1), [V7.B16] 38 VLD1 (R2), [V19.S4] // load constant k0-k79 39 VMOV V0.B16, V2.B16 40 VMOV V20.S[0], V1 41 VMOV V2.B16, V3.B16 42 VDUP V19.S[0], V17.S4 43 VREV32 V4.B16, V4.B16 // prepare for using message in Byte format 44 VREV32 V5.B16, V5.B16 45 VREV32 V6.B16, V6.B16 46 VREV32 V7.B16, V7.B16 47 48 49 VDUP V19.S[1], V18.S4 50 VADD V17.S4, V4.S4, V16.S4 51 SHA1SU0 V6.S4, V5.S4, V4.S4 52 HASHUPDATECHOOSE 53 SHA1SU1 V7.S4, V4.S4 54 55 VADD V17.S4, V5.S4, V16.S4 56 SHA1SU0 V7.S4, V6.S4, V5.S4 57 HASHUPDATECHOOSE 58 SHA1SU1 V4.S4, V5.S4 59 VADD V17.S4, V6.S4, V16.S4 60 SHA1SU0 V4.S4, V7.S4, V6.S4 61 HASHUPDATECHOOSE 62 SHA1SU1 V5.S4, V6.S4 63 64 VADD V17.S4, V7.S4, V16.S4 65 SHA1SU0 V5.S4, V4.S4, V7.S4 66 HASHUPDATECHOOSE 67 SHA1SU1 V6.S4, V7.S4 68 69 VADD V17.S4, V4.S4, V16.S4 70 SHA1SU0 V6.S4, V5.S4, V4.S4 71 HASHUPDATECHOOSE 72 SHA1SU1 V7.S4, V4.S4 73 74 VDUP V19.S[2], V17.S4 75 VADD V18.S4, V5.S4, V16.S4 76 SHA1SU0 V7.S4, V6.S4, V5.S4 77 HASHUPDATEPARITY 78 SHA1SU1 V4.S4, V5.S4 79 80 VADD V18.S4, V6.S4, V16.S4 81 SHA1SU0 V4.S4, V7.S4, V6.S4 82 HASHUPDATEPARITY 83 SHA1SU1 V5.S4, V6.S4 84 85 VADD V18.S4, V7.S4, V16.S4 86 SHA1SU0 V5.S4, V4.S4, V7.S4 87 HASHUPDATEPARITY 88 SHA1SU1 V6.S4, V7.S4 89 90 VADD V18.S4, V4.S4, V16.S4 91 SHA1SU0 V6.S4, V5.S4, V4.S4 92 HASHUPDATEPARITY 93 SHA1SU1 V7.S4, V4.S4 94 95 VADD V18.S4, V5.S4, V16.S4 96 SHA1SU0 V7.S4, V6.S4, V5.S4 97 HASHUPDATEPARITY 98 SHA1SU1 V4.S4, V5.S4 99 100 VDUP V19.S[3], V18.S4 101 VADD V17.S4, V6.S4, V16.S4 102 SHA1SU0 V4.S4, V7.S4, V6.S4 103 HASHUPDATEMAJ 104 SHA1SU1 V5.S4, V6.S4 105 106 VADD V17.S4, V7.S4, V16.S4 107 SHA1SU0 V5.S4, V4.S4, V7.S4 108 HASHUPDATEMAJ 109 SHA1SU1 V6.S4, V7.S4 110 111 VADD V17.S4, V4.S4, V16.S4 112 SHA1SU0 V6.S4, V5.S4, V4.S4 113 HASHUPDATEMAJ 114 SHA1SU1 V7.S4, V4.S4 115 116 VADD V17.S4, V5.S4, V16.S4 117 SHA1SU0 V7.S4, V6.S4, V5.S4 118 HASHUPDATEMAJ 119 SHA1SU1 V4.S4, V5.S4 120 121 VADD V17.S4, V6.S4, V16.S4 122 SHA1SU0 V4.S4, V7.S4, V6.S4 123 HASHUPDATEMAJ 124 SHA1SU1 V5.S4, V6.S4 125 126 VADD V18.S4, V7.S4, V16.S4 127 SHA1SU0 V5.S4, V4.S4, V7.S4 128 HASHUPDATEPARITY 129 SHA1SU1 V6.S4, V7.S4 130 131 VADD V18.S4, V4.S4, V16.S4 132 HASHUPDATEPARITY 133 134 VADD V18.S4, V5.S4, V16.S4 135 HASHUPDATEPARITY 136 137 VADD V18.S4, V6.S4, V16.S4 138 HASHUPDATEPARITY 139 140 VADD V18.S4, V7.S4, V16.S4 141 HASHUPDATEPARITY 142 143 SUB $64, R3, R3 // message length - 64bytes, then compare with 64bytes 144 VADD V2.S4, V0.S4, V0.S4 145 VADD V1.S4, V20.S4, V20.S4 146 CBNZ R3, blockloop 147 148 sha1ret: 149 150 VST1.P [V0.S4], 16(R0) // store hash value H(dcba) 151 VMOVS V20, (R0) // store hash value H(e) 152 RET 153
