Text file src/crypto/md5/md5block_ppc64x.s

     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 optimized for ppc64le using Go's assembler for
     6  // ppc64le, 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 ppc64 || ppc64le
    14  
    15  #include "textflag.h"
    16  
    17  // ENDIAN_MOVE generates the appropriate
    18  // 4 byte load for big or little endian.
    19  // The 4 bytes at ptr+off is loaded into dst.
    20  // The idx reg is only needed for big endian
    21  // and is clobbered when used.
    22  #ifdef GOARCH_ppc64le
    23  #define ENDIAN_MOVE(off, ptr, dst, idx) \
    24  	MOVWZ	off(ptr),dst
    25  #else
    26  #define ENDIAN_MOVE(off, ptr, dst, idx) \
    27  	MOVD	$off,idx; \
    28  	MOVWBR	(idx)(ptr), dst
    29  #endif
    30  
    31  #define M00 R18
    32  #define M01 R19
    33  #define M02 R20
    34  #define M03 R24
    35  #define M04 R25
    36  #define M05 R26
    37  #define M06 R27
    38  #define M07 R28
    39  #define M08 R29
    40  #define M09 R21
    41  #define M10 R11
    42  #define M11 R8
    43  #define M12 R7
    44  #define M13 R12
    45  #define M14 R23
    46  #define M15 R10
    47  
    48  #define ROUND1(a, b, c, d, index, const, shift) \
    49  	ADD	$const, index, R9; \
    50  	ADD	R9, a; \
    51  	AND     b, c, R9; \
    52  	ANDN    b, d, R31; \
    53  	OR	R9, R31, R9; \
    54  	ADD	R9, a; \
    55  	ROTLW	$shift, a; \
    56  	ADD	b, a;
    57  
    58  #define ROUND2(a, b, c, d, index, const, shift) \
    59  	ADD	$const, index, R9; \
    60  	ADD	R9, a; \
    61  	AND	b, d, R31; \
    62  	ANDN	d, c, R9; \
    63  	OR	R9, R31; \
    64  	ADD	R31, a; \
    65  	ROTLW	$shift, a; \
    66  	ADD	b, a;
    67  
    68  #define ROUND3(a, b, c, d, index, const, shift) \
    69  	ADD	$const, index, R9; \
    70  	ADD	R9, a; \
    71  	XOR	d, c, R31; \
    72  	XOR	b, R31; \
    73  	ADD	R31, a; \
    74  	ROTLW	$shift, a; \
    75  	ADD	b, a;
    76  
    77  #define ROUND4(a, b, c, d, index, const, shift) \
    78  	ADD	$const, index, R9; \
    79  	ADD	R9, a; \
    80  	ORN     d, b, R31; \
    81  	XOR	c, R31; \
    82  	ADD	R31, a; \
    83  	ROTLW	$shift, a; \
    84  	ADD	b, a;
    85  
    86  
    87  TEXT ¬∑block(SB),NOSPLIT,$0-32
    88  	MOVD	dig+0(FP), R10
    89  	MOVD	p+8(FP), R6
    90  	MOVD	p_len+16(FP), R5
    91  
    92  	// We assume p_len >= 64
    93  	SRD 	$6, R5
    94  	MOVD	R5, CTR
    95  
    96  	MOVWZ	0(R10), R22
    97  	MOVWZ	4(R10), R3
    98  	MOVWZ	8(R10), R4
    99  	MOVWZ	12(R10), R5
   100  
   101  loop:
   102  	MOVD	R22, R14
   103  	MOVD	R3, R15
   104  	MOVD	R4, R16
   105  	MOVD	R5, R17
   106  
   107  	ENDIAN_MOVE( 0,R6,M00,M15)
   108  	ENDIAN_MOVE( 4,R6,M01,M15)
   109  	ENDIAN_MOVE( 8,R6,M02,M15)
   110  	ENDIAN_MOVE(12,R6,M03,M15)
   111  
   112  	ROUND1(R22,R3,R4,R5,M00,0xd76aa478, 7);
   113  	ROUND1(R5,R22,R3,R4,M01,0xe8c7b756,12);
   114  	ROUND1(R4,R5,R22,R3,M02,0x242070db,17);
   115  	ROUND1(R3,R4,R5,R22,M03,0xc1bdceee,22);
   116  
   117  	ENDIAN_MOVE(16,R6,M04,M15)
   118  	ENDIAN_MOVE(20,R6,M05,M15)
   119  	ENDIAN_MOVE(24,R6,M06,M15)
   120  	ENDIAN_MOVE(28,R6,M07,M15)
   121  
   122  	ROUND1(R22,R3,R4,R5,M04,0xf57c0faf, 7);
   123  	ROUND1(R5,R22,R3,R4,M05,0x4787c62a,12);
   124  	ROUND1(R4,R5,R22,R3,M06,0xa8304613,17);
   125  	ROUND1(R3,R4,R5,R22,M07,0xfd469501,22);
   126  
   127  	ENDIAN_MOVE(32,R6,M08,M15)
   128  	ENDIAN_MOVE(36,R6,M09,M15)
   129  	ENDIAN_MOVE(40,R6,M10,M15)
   130  	ENDIAN_MOVE(44,R6,M11,M15)
   131  
   132  	ROUND1(R22,R3,R4,R5,M08,0x698098d8, 7);
   133  	ROUND1(R5,R22,R3,R4,M09,0x8b44f7af,12);
   134  	ROUND1(R4,R5,R22,R3,M10,0xffff5bb1,17);
   135  	ROUND1(R3,R4,R5,R22,M11,0x895cd7be,22);
   136  
   137  	ENDIAN_MOVE(48,R6,M12,M15)
   138  	ENDIAN_MOVE(52,R6,M13,M15)
   139  	ENDIAN_MOVE(56,R6,M14,M15)
   140  	ENDIAN_MOVE(60,R6,M15,M15)
   141  
   142  	ROUND1(R22,R3,R4,R5,M12,0x6b901122, 7);
   143  	ROUND1(R5,R22,R3,R4,M13,0xfd987193,12);
   144  	ROUND1(R4,R5,R22,R3,M14,0xa679438e,17);
   145  	ROUND1(R3,R4,R5,R22,M15,0x49b40821,22);
   146  
   147  	ROUND2(R22,R3,R4,R5,M01,0xf61e2562, 5);
   148  	ROUND2(R5,R22,R3,R4,M06,0xc040b340, 9);
   149  	ROUND2(R4,R5,R22,R3,M11,0x265e5a51,14);
   150  	ROUND2(R3,R4,R5,R22,M00,0xe9b6c7aa,20);
   151  	ROUND2(R22,R3,R4,R5,M05,0xd62f105d, 5);
   152  	ROUND2(R5,R22,R3,R4,M10, 0x2441453, 9);
   153  	ROUND2(R4,R5,R22,R3,M15,0xd8a1e681,14);
   154  	ROUND2(R3,R4,R5,R22,M04,0xe7d3fbc8,20);
   155  	ROUND2(R22,R3,R4,R5,M09,0x21e1cde6, 5);
   156  	ROUND2(R5,R22,R3,R4,M14,0xc33707d6, 9);
   157  	ROUND2(R4,R5,R22,R3,M03,0xf4d50d87,14);
   158  	ROUND2(R3,R4,R5,R22,M08,0x455a14ed,20);
   159  	ROUND2(R22,R3,R4,R5,M13,0xa9e3e905, 5);
   160  	ROUND2(R5,R22,R3,R4,M02,0xfcefa3f8, 9);
   161  	ROUND2(R4,R5,R22,R3,M07,0x676f02d9,14);
   162  	ROUND2(R3,R4,R5,R22,M12,0x8d2a4c8a,20);
   163  
   164  	ROUND3(R22,R3,R4,R5,M05,0xfffa3942, 4);
   165  	ROUND3(R5,R22,R3,R4,M08,0x8771f681,11);
   166  	ROUND3(R4,R5,R22,R3,M11,0x6d9d6122,16);
   167  	ROUND3(R3,R4,R5,R22,M14,0xfde5380c,23);
   168  	ROUND3(R22,R3,R4,R5,M01,0xa4beea44, 4);
   169  	ROUND3(R5,R22,R3,R4,M04,0x4bdecfa9,11);
   170  	ROUND3(R4,R5,R22,R3,M07,0xf6bb4b60,16);
   171  	ROUND3(R3,R4,R5,R22,M10,0xbebfbc70,23);
   172  	ROUND3(R22,R3,R4,R5,M13,0x289b7ec6, 4);
   173  	ROUND3(R5,R22,R3,R4,M00,0xeaa127fa,11);
   174  	ROUND3(R4,R5,R22,R3,M03,0xd4ef3085,16);
   175  	ROUND3(R3,R4,R5,R22,M06, 0x4881d05,23);
   176  	ROUND3(R22,R3,R4,R5,M09,0xd9d4d039, 4);
   177  	ROUND3(R5,R22,R3,R4,M12,0xe6db99e5,11);
   178  	ROUND3(R4,R5,R22,R3,M15,0x1fa27cf8,16);
   179  	ROUND3(R3,R4,R5,R22,M02,0xc4ac5665,23);
   180  
   181  	ROUND4(R22,R3,R4,R5,M00,0xf4292244, 6);
   182  	ROUND4(R5,R22,R3,R4,M07,0x432aff97,10);
   183  	ROUND4(R4,R5,R22,R3,M14,0xab9423a7,15);
   184  	ROUND4(R3,R4,R5,R22,M05,0xfc93a039,21);
   185  	ROUND4(R22,R3,R4,R5,M12,0x655b59c3, 6);
   186  	ROUND4(R5,R22,R3,R4,M03,0x8f0ccc92,10);
   187  	ROUND4(R4,R5,R22,R3,M10,0xffeff47d,15);
   188  	ROUND4(R3,R4,R5,R22,M01,0x85845dd1,21);
   189  	ROUND4(R22,R3,R4,R5,M08,0x6fa87e4f, 6);
   190  	ROUND4(R5,R22,R3,R4,M15,0xfe2ce6e0,10);
   191  	ROUND4(R4,R5,R22,R3,M06,0xa3014314,15);
   192  	ROUND4(R3,R4,R5,R22,M13,0x4e0811a1,21);
   193  	ROUND4(R22,R3,R4,R5,M04,0xf7537e82, 6);
   194  	ROUND4(R5,R22,R3,R4,M11,0xbd3af235,10);
   195  	ROUND4(R4,R5,R22,R3,M02,0x2ad7d2bb,15);
   196  	ROUND4(R3,R4,R5,R22,M09,0xeb86d391,21);
   197  
   198  	ADD	R14, R22
   199  	ADD	R15, R3
   200  	ADD	R16, R4
   201  	ADD	R17, R5
   202  	ADD	$64, R6
   203  	BC	16, 0, loop // bdnz
   204  
   205  end:
   206  	MOVD	dig+0(FP), R10
   207  	MOVWZ	R22, 0(R10)
   208  	MOVWZ	R3, 4(R10)
   209  	MOVWZ	R4, 8(R10)
   210  	MOVWZ	R5, 12(R10)
   211  
   212  	RET
   213  

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