ref: 55033d9aedd86ab398644d188ae826cb537a52c7
dir: /sys/src/libsec/mips/md5block.s/
/* * rfc1321 requires that I include this. The code is new. The constants * all come from the rfc (hence the copyright). We trade a table for the * macros in rfc. The total size is a lot less. -- presotto * * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All * rights reserved. * * License to copy and use this software is granted provided that it * is identified as the "RSA Data Security, Inc. MD5 Message-Digest * Algorithm" in all material mentioning or referencing this software * or this function. * * License is also granted to make and use derivative works provided * that such works are identified as "derived from the RSA Data * Security, Inc. MD5 Message-Digest Algorithm" in all material * mentioning or referencing the derived work. * * RSA Data Security, Inc. makes no representations concerning either * the merchantability of this software or the suitability of this * software forany particular purpose. It is provided "as is" * without express or implied warranty of any kind. * These notices must be retained in any copies of any part of this * documentation and/or software. */ /* round 1 */ DATA md5tab<>+( 0*4)(SB)/4,$0xd76aa478 DATA md5tab<>+( 1*4)(SB)/4,$0xe8c7b756 DATA md5tab<>+( 2*4)(SB)/4,$0x242070db DATA md5tab<>+( 3*4)(SB)/4,$0xc1bdceee DATA md5tab<>+( 4*4)(SB)/4,$0xf57c0faf DATA md5tab<>+( 5*4)(SB)/4,$0x4787c62a DATA md5tab<>+( 6*4)(SB)/4,$0xa8304613 DATA md5tab<>+( 7*4)(SB)/4,$0xfd469501 DATA md5tab<>+( 8*4)(SB)/4,$0x698098d8 DATA md5tab<>+( 9*4)(SB)/4,$0x8b44f7af DATA md5tab<>+(10*4)(SB)/4,$0xffff5bb1 DATA md5tab<>+(11*4)(SB)/4,$0x895cd7be DATA md5tab<>+(12*4)(SB)/4,$0x6b901122 DATA md5tab<>+(13*4)(SB)/4,$0xfd987193 DATA md5tab<>+(14*4)(SB)/4,$0xa679438e DATA md5tab<>+(15*4)(SB)/4,$0x49b40821 /* round 2 */ DATA md5tab<>+(16*4)(SB)/4,$0xf61e2562 DATA md5tab<>+(17*4)(SB)/4,$0xc040b340 DATA md5tab<>+(18*4)(SB)/4,$0x265e5a51 DATA md5tab<>+(19*4)(SB)/4,$0xe9b6c7aa DATA md5tab<>+(20*4)(SB)/4,$0xd62f105d DATA md5tab<>+(21*4)(SB)/4,$0x02441453 DATA md5tab<>+(22*4)(SB)/4,$0xd8a1e681 DATA md5tab<>+(23*4)(SB)/4,$0xe7d3fbc8 DATA md5tab<>+(24*4)(SB)/4,$0x21e1cde6 DATA md5tab<>+(25*4)(SB)/4,$0xc33707d6 DATA md5tab<>+(26*4)(SB)/4,$0xf4d50d87 DATA md5tab<>+(27*4)(SB)/4,$0x455a14ed DATA md5tab<>+(28*4)(SB)/4,$0xa9e3e905 DATA md5tab<>+(29*4)(SB)/4,$0xfcefa3f8 DATA md5tab<>+(30*4)(SB)/4,$0x676f02d9 DATA md5tab<>+(31*4)(SB)/4,$0x8d2a4c8a /* round 3 */ DATA md5tab<>+(32*4)(SB)/4,$0xfffa3942 DATA md5tab<>+(33*4)(SB)/4,$0x8771f681 DATA md5tab<>+(34*4)(SB)/4,$0x6d9d6122 DATA md5tab<>+(35*4)(SB)/4,$0xfde5380c DATA md5tab<>+(36*4)(SB)/4,$0xa4beea44 DATA md5tab<>+(37*4)(SB)/4,$0x4bdecfa9 DATA md5tab<>+(38*4)(SB)/4,$0xf6bb4b60 DATA md5tab<>+(39*4)(SB)/4,$0xbebfbc70 DATA md5tab<>+(40*4)(SB)/4,$0x289b7ec6 DATA md5tab<>+(41*4)(SB)/4,$0xeaa127fa DATA md5tab<>+(42*4)(SB)/4,$0xd4ef3085 DATA md5tab<>+(43*4)(SB)/4,$0x04881d05 DATA md5tab<>+(44*4)(SB)/4,$0xd9d4d039 DATA md5tab<>+(45*4)(SB)/4,$0xe6db99e5 DATA md5tab<>+(46*4)(SB)/4,$0x1fa27cf8 DATA md5tab<>+(47*4)(SB)/4,$0xc4ac5665 /* round 4 */ DATA md5tab<>+(48*4)(SB)/4,$0xf4292244 DATA md5tab<>+(49*4)(SB)/4,$0x432aff97 DATA md5tab<>+(50*4)(SB)/4,$0xab9423a7 DATA md5tab<>+(51*4)(SB)/4,$0xfc93a039 DATA md5tab<>+(52*4)(SB)/4,$0x655b59c3 DATA md5tab<>+(53*4)(SB)/4,$0x8f0ccc92 DATA md5tab<>+(54*4)(SB)/4,$0xffeff47d DATA md5tab<>+(55*4)(SB)/4,$0x85845dd1 DATA md5tab<>+(56*4)(SB)/4,$0x6fa87e4f DATA md5tab<>+(57*4)(SB)/4,$0xfe2ce6e0 DATA md5tab<>+(58*4)(SB)/4,$0xa3014314 DATA md5tab<>+(59*4)(SB)/4,$0x4e0811a1 DATA md5tab<>+(60*4)(SB)/4,$0xf7537e82 DATA md5tab<>+(61*4)(SB)/4,$0xbd3af235 DATA md5tab<>+(62*4)(SB)/4,$0x2ad7d2bb DATA md5tab<>+(63*4)(SB)/4,$0xeb86d391 #define S11 7 #define S12 12 #define S13 17 #define S14 22 #define S21 5 #define S22 9 #define S23 14 #define S24 20 #define S31 4 #define S32 11 #define S33 16 #define S34 23 #define S41 6 #define S42 10 #define S43 15 #define S44 21 #define AREG R5 #define BREG R6 #define CREG R7 #define DREG R8 #define DATAREG R1 #define TABREG R10 #define STREG R11 #define XREG R12 #define ELOOPREG R13 #define EDREG R14 #define IREG R15 #define TMP1 R9 #define TMP2 R2 #define TMP3 R3 #define TMP4 R4 /* * decode little endian data into x[off], then the body * bodies have this form: * a += FN(B,C,D); * a += x[off] + t[off]; * a = (a << S11) | (a >> (32 - S11)); * a += b; */ #define BODY1(off,FN,SH,A,B,C,D)\ MOVBU off(DATAREG),TMP2;\ MOVBU (off+1)(DATAREG),TMP3;\ MOVBU (off+2)(DATAREG),TMP1;\ MOVBU (off+3)(DATAREG),TMP4;\ SLL $8,TMP3;\ OR TMP3,TMP2;\ SLL $16,TMP1;\ OR TMP1,TMP2;\ SLL $24,TMP4;\ OR TMP4,TMP2;\ MOVW off(TABREG),TMP3;\ FN(B,C,D)\ ADDU TMP1,A;\ MOVW TMP2,off(XREG);\ ADDU TMP2,A;\ ADDU TMP3,A;\ SLL $SH,A,TMP1;\ SRL $(32-SH),A;\ OR TMP1,A;\ ADDU B,A;\ #define BODY(off,inc,FN,SH,A,B,C,D)\ MOVW off(TABREG),TMP3;\ ADDU XREG,IREG,TMP4;\ MOVW (TMP4),TMP2;\ ADDU $(inc*4),IREG;\ AND $63,IREG;\ FN(B,C,D)\ ADDU TMP1,A;\ ADDU TMP2,A;\ ADDU TMP3,A;\ SLL $SH,A,TMP1;\ SRL $(32-SH),A;\ OR TMP1,A;\ ADDU B,A;\ /* * fn1 = ((c ^ d) & b) ^ d */ #define FN1(B,C,D)\ XOR C,D,TMP1;\ AND B,TMP1;\ XOR D,TMP1;\ /* * fn2 = ((b ^ c) & d) ^ c; */ #define FN2(B,C,D)\ XOR B,C,TMP1;\ AND D,TMP1;\ XOR C,TMP1;\ /* * fn3 = b ^ c ^ d; */ #define FN3(B,C,D)\ XOR B,C,TMP1;\ XOR D,TMP1;\ /* * fn4 = c ^ (b | ~d); */ #define FN4(B,C,D)\ XOR $-1,D,TMP1;\ OR B,TMP1;\ XOR C,TMP1;\ #define DATA 0 #define LEN 4 #define STATE 8 #define XOFF (-4-16*4) TEXT _md5block+0(SB),$68 MOVW len+LEN(FP),TMP1 ADDU DATAREG,TMP1,EDREG MOVW state+STATE(FP),STREG MOVW 0(STREG),AREG MOVW 4(STREG),BREG MOVW 8(STREG),CREG MOVW 12(STREG),DREG mainloop: MOVW $md5tab<>+0(SB),TABREG ADDU $(16*4),DATAREG,ELOOPREG MOVW $x+XOFF(SP),XREG loop1: BODY1(0,FN1,S11,AREG,BREG,CREG,DREG) BODY1(4,FN1,S12,DREG,AREG,BREG,CREG) BODY1(8,FN1,S13,CREG,DREG,AREG,BREG) BODY1(12,FN1,S14,BREG,CREG,DREG,AREG) ADDU $16,DATAREG ADDU $16,TABREG ADDU $16,XREG BNE DATAREG,ELOOPREG,loop1 MOVW $x+XOFF(SP),XREG MOVW $(1*4),IREG MOVW $(1*4),ELOOPREG loop2: BODY(0,5,FN2,S21,AREG,BREG,CREG,DREG) BODY(4,5,FN2,S22,DREG,AREG,BREG,CREG) BODY(8,5,FN2,S23,CREG,DREG,AREG,BREG) BODY(12,5,FN2,S24,BREG,CREG,DREG,AREG) ADDU $16,TABREG BNE IREG,ELOOPREG,loop2 MOVW $(5*4),IREG MOVW $(5*4),ELOOPREG loop3: BODY(0,3,FN3,S31,AREG,BREG,CREG,DREG) BODY(4,3,FN3,S32,DREG,AREG,BREG,CREG) BODY(8,3,FN3,S33,CREG,DREG,AREG,BREG) BODY(12,3,FN3,S34,BREG,CREG,DREG,AREG) ADDU $16,TABREG BNE IREG,ELOOPREG,loop3 MOVW $0,IREG loop4: BODY(0,7,FN4,S41,AREG,BREG,CREG,DREG) BODY(4,7,FN4,S42,DREG,AREG,BREG,CREG) BODY(8,7,FN4,S43,CREG,DREG,AREG,BREG) BODY(12,7,FN4,S44,BREG,CREG,DREG,AREG) ADDU $16,TABREG BNE IREG,R0,loop4 MOVW 0(STREG),TMP1 MOVW 4(STREG),TMP2 MOVW 8(STREG),TMP3 MOVW 12(STREG),TMP4 ADDU TMP1,AREG ADDU TMP2,BREG ADDU TMP3,CREG ADDU TMP4,DREG MOVW AREG,0(STREG) MOVW BREG,4(STREG) MOVW CREG,8(STREG) MOVW DREG,12(STREG) BNE DATAREG,EDREG,mainloop RET GLOBL md5tab<>+0(SB),$256 END