1// Original source: 2// http://www.zorinaq.com/papers/md5-amd64.html 3// http://www.zorinaq.com/papers/md5-amd64.tar.bz2 4// 5// MD5 adapted for s390x using Go's assembler for 6// s390x, based on md5block_amd64.s implementation by 7// the Go authors. 8// 9// Author: Marc Bevand <bevand_m (at) epita.fr> 10// Licence: I hereby disclaim the copyright on this code and place it 11// in the public domain. 12 13//go:build !purego 14 15#include "textflag.h" 16 17// func block(dig *digest, p []byte) 18TEXT ·block(SB),NOSPLIT,$16-32 19 MOVD dig+0(FP), R1 20 MOVD p+8(FP), R6 21 MOVD p_len+16(FP), R5 22 AND $-64, R5 23 LAY (R6)(R5*1), R7 24 25 LMY 0(R1), R2, R5 26 CMPBEQ R6, R7, end 27 28loop: 29 STMY R2, R5, tmp-16(SP) 30 31 MOVWBR 0(R6), R8 32 MOVWZ R5, R9 33 34#define ROUND1(a, b, c, d, index, const, shift) \ 35 XOR c, R9; \ 36 ADD $const, a; \ 37 ADD R8, a; \ 38 MOVWBR (index*4)(R6), R8; \ 39 AND b, R9; \ 40 XOR d, R9; \ 41 ADD R9, a; \ 42 RLL $shift, a; \ 43 MOVWZ c, R9; \ 44 ADD b, a 45 46 ROUND1(R2,R3,R4,R5, 1,0xd76aa478, 7); 47 ROUND1(R5,R2,R3,R4, 2,0xe8c7b756,12); 48 ROUND1(R4,R5,R2,R3, 3,0x242070db,17); 49 ROUND1(R3,R4,R5,R2, 4,0xc1bdceee,22); 50 ROUND1(R2,R3,R4,R5, 5,0xf57c0faf, 7); 51 ROUND1(R5,R2,R3,R4, 6,0x4787c62a,12); 52 ROUND1(R4,R5,R2,R3, 7,0xa8304613,17); 53 ROUND1(R3,R4,R5,R2, 8,0xfd469501,22); 54 ROUND1(R2,R3,R4,R5, 9,0x698098d8, 7); 55 ROUND1(R5,R2,R3,R4,10,0x8b44f7af,12); 56 ROUND1(R4,R5,R2,R3,11,0xffff5bb1,17); 57 ROUND1(R3,R4,R5,R2,12,0x895cd7be,22); 58 ROUND1(R2,R3,R4,R5,13,0x6b901122, 7); 59 ROUND1(R5,R2,R3,R4,14,0xfd987193,12); 60 ROUND1(R4,R5,R2,R3,15,0xa679438e,17); 61 ROUND1(R3,R4,R5,R2, 0,0x49b40821,22); 62 63 MOVWBR (1*4)(R6), R8 64 MOVWZ R5, R9 65 MOVWZ R5, R1 66 67#define ROUND2(a, b, c, d, index, const, shift) \ 68 XOR $0xffffffff, R9; \ // NOTW R9 69 ADD $const, a; \ 70 ADD R8, a; \ 71 MOVWBR (index*4)(R6), R8; \ 72 AND b, R1; \ 73 AND c, R9; \ 74 OR R9, R1; \ 75 MOVWZ c, R9; \ 76 ADD R1, a; \ 77 MOVWZ c, R1; \ 78 RLL $shift, a; \ 79 ADD b, a 80 81 ROUND2(R2,R3,R4,R5, 6,0xf61e2562, 5); 82 ROUND2(R5,R2,R3,R4,11,0xc040b340, 9); 83 ROUND2(R4,R5,R2,R3, 0,0x265e5a51,14); 84 ROUND2(R3,R4,R5,R2, 5,0xe9b6c7aa,20); 85 ROUND2(R2,R3,R4,R5,10,0xd62f105d, 5); 86 ROUND2(R5,R2,R3,R4,15, 0x2441453, 9); 87 ROUND2(R4,R5,R2,R3, 4,0xd8a1e681,14); 88 ROUND2(R3,R4,R5,R2, 9,0xe7d3fbc8,20); 89 ROUND2(R2,R3,R4,R5,14,0x21e1cde6, 5); 90 ROUND2(R5,R2,R3,R4, 3,0xc33707d6, 9); 91 ROUND2(R4,R5,R2,R3, 8,0xf4d50d87,14); 92 ROUND2(R3,R4,R5,R2,13,0x455a14ed,20); 93 ROUND2(R2,R3,R4,R5, 2,0xa9e3e905, 5); 94 ROUND2(R5,R2,R3,R4, 7,0xfcefa3f8, 9); 95 ROUND2(R4,R5,R2,R3,12,0x676f02d9,14); 96 ROUND2(R3,R4,R5,R2, 0,0x8d2a4c8a,20); 97 98 MOVWBR (5*4)(R6), R8 99 MOVWZ R4, R9 100 101#define ROUND3(a, b, c, d, index, const, shift) \ 102 ADD $const, a; \ 103 ADD R8, a; \ 104 MOVWBR (index*4)(R6), R8; \ 105 XOR d, R9; \ 106 XOR b, R9; \ 107 ADD R9, a; \ 108 RLL $shift, a; \ 109 MOVWZ b, R9; \ 110 ADD b, a 111 112 ROUND3(R2,R3,R4,R5, 8,0xfffa3942, 4); 113 ROUND3(R5,R2,R3,R4,11,0x8771f681,11); 114 ROUND3(R4,R5,R2,R3,14,0x6d9d6122,16); 115 ROUND3(R3,R4,R5,R2, 1,0xfde5380c,23); 116 ROUND3(R2,R3,R4,R5, 4,0xa4beea44, 4); 117 ROUND3(R5,R2,R3,R4, 7,0x4bdecfa9,11); 118 ROUND3(R4,R5,R2,R3,10,0xf6bb4b60,16); 119 ROUND3(R3,R4,R5,R2,13,0xbebfbc70,23); 120 ROUND3(R2,R3,R4,R5, 0,0x289b7ec6, 4); 121 ROUND3(R5,R2,R3,R4, 3,0xeaa127fa,11); 122 ROUND3(R4,R5,R2,R3, 6,0xd4ef3085,16); 123 ROUND3(R3,R4,R5,R2, 9, 0x4881d05,23); 124 ROUND3(R2,R3,R4,R5,12,0xd9d4d039, 4); 125 ROUND3(R5,R2,R3,R4,15,0xe6db99e5,11); 126 ROUND3(R4,R5,R2,R3, 2,0x1fa27cf8,16); 127 ROUND3(R3,R4,R5,R2, 0,0xc4ac5665,23); 128 129 MOVWBR (0*4)(R6), R8 130 MOVWZ $0xffffffff, R9 131 XOR R5, R9 132 133#define ROUND4(a, b, c, d, index, const, shift) \ 134 ADD $const, a; \ 135 ADD R8, a; \ 136 MOVWBR (index*4)(R6), R8; \ 137 OR b, R9; \ 138 XOR c, R9; \ 139 ADD R9, a; \ 140 MOVWZ $0xffffffff, R9; \ 141 RLL $shift, a; \ 142 XOR c, R9; \ 143 ADD b, a 144 145 ROUND4(R2,R3,R4,R5, 7,0xf4292244, 6); 146 ROUND4(R5,R2,R3,R4,14,0x432aff97,10); 147 ROUND4(R4,R5,R2,R3, 5,0xab9423a7,15); 148 ROUND4(R3,R4,R5,R2,12,0xfc93a039,21); 149 ROUND4(R2,R3,R4,R5, 3,0x655b59c3, 6); 150 ROUND4(R5,R2,R3,R4,10,0x8f0ccc92,10); 151 ROUND4(R4,R5,R2,R3, 1,0xffeff47d,15); 152 ROUND4(R3,R4,R5,R2, 8,0x85845dd1,21); 153 ROUND4(R2,R3,R4,R5,15,0x6fa87e4f, 6); 154 ROUND4(R5,R2,R3,R4, 6,0xfe2ce6e0,10); 155 ROUND4(R4,R5,R2,R3,13,0xa3014314,15); 156 ROUND4(R3,R4,R5,R2, 4,0x4e0811a1,21); 157 ROUND4(R2,R3,R4,R5,11,0xf7537e82, 6); 158 ROUND4(R5,R2,R3,R4, 2,0xbd3af235,10); 159 ROUND4(R4,R5,R2,R3, 9,0x2ad7d2bb,15); 160 ROUND4(R3,R4,R5,R2, 0,0xeb86d391,21); 161 162 MOVWZ tmp-16(SP), R1 163 ADD R1, R2 164 MOVWZ tmp-12(SP), R1 165 ADD R1, R3 166 MOVWZ tmp-8(SP), R1 167 ADD R1, R4 168 MOVWZ tmp-4(SP), R1 169 ADD R1, R5 170 171 LA 64(R6), R6 172 CMPBLT R6, R7, loop 173 174end: 175 MOVD dig+0(FP), R1 176 STMY R2, R5, 0(R1) 177 RET 178