github.com/zebozhuang/go@v0.0.0-20200207033046-f8a98f6f5c5d/src/crypto/sha512/sha512block_ppc64le.s (about)

     1  // Copyright 2016 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  // This is a derived work from OpenSSL of SHA-2 using assembly optimizations. The
     6  // original code was written by Andy Polyakov <appro@openssl.org> and it's dual
     7  // licensed under OpenSSL and CRYPTOGAMS licenses depending on where you obtain
     8  // it. For further details see http://www.openssl.org/~appro/cryptogams/.
     9  
    10  #include "textflag.h"
    11  
    12  // SHA512 block routine. See sha512block.go for Go equivalent.
    13  //
    14  // The algorithm is detailed in FIPS 180-4:
    15  //
    16  //  http://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
    17  //
    18  // Wt = Mt; for 0 <= t <= 15
    19  // Wt = SIGMA1(Wt-2) + SIGMA0(Wt-15) + Wt-16; for 16 <= t <= 79
    20  //
    21  // a = H0
    22  // b = H1
    23  // c = H2
    24  // d = H3
    25  // e = H4
    26  // f = H5
    27  // g = H6
    28  // h = H7
    29  //
    30  // for t = 0 to 79 {
    31  //    T1 = h + BIGSIGMA1(e) + Ch(e,f,g) + Kt + Wt
    32  //    T2 = BIGSIGMA0(a) + Maj(a,b,c)
    33  //    h = g
    34  //    g = f
    35  //    f = e
    36  //    e = d + T1
    37  //    d = c
    38  //    c = b
    39  //    b = a
    40  //    a = T1 + T2
    41  // }
    42  //
    43  // H0 = a + H0
    44  // H1 = b + H1
    45  // H2 = c + H2
    46  // H3 = d + H3
    47  // H4 = e + H4
    48  // H5 = f + H5
    49  // H6 = g + H6
    50  // H7 = h + H7
    51  
    52  #define CTX	R3
    53  #define INP	R4
    54  #define END	R5
    55  #define TBL	R6
    56  #define IDX	R7
    57  #define CNT	R8
    58  #define LEN	R9
    59  #define OFFLOAD	R11
    60  #define TEMP	R12
    61  
    62  #define HEX00	R0
    63  #define HEX10	R10
    64  #define HEX20	R25
    65  #define HEX30	R26
    66  #define HEX40	R27
    67  #define HEX50	R28
    68  #define HEX60	R29
    69  #define HEX70	R31
    70  
    71  // V0-V7 are A-H
    72  // V8-V23 are used for the message schedule
    73  #define KI	V24
    74  #define FUNC	V25
    75  #define S0	V26
    76  #define S1	V27
    77  #define s0	V28
    78  #define s1	V29
    79  #define LEMASK	V31	// Permutation control register for little endian
    80  
    81  // 2 copies of each Kt, to fill both doublewords of a vector register
    82  DATA  ·kcon+0x000(SB)/8, $0x428a2f98d728ae22
    83  DATA  ·kcon+0x008(SB)/8, $0x428a2f98d728ae22
    84  DATA  ·kcon+0x010(SB)/8, $0x7137449123ef65cd
    85  DATA  ·kcon+0x018(SB)/8, $0x7137449123ef65cd
    86  DATA  ·kcon+0x020(SB)/8, $0xb5c0fbcfec4d3b2f
    87  DATA  ·kcon+0x028(SB)/8, $0xb5c0fbcfec4d3b2f
    88  DATA  ·kcon+0x030(SB)/8, $0xe9b5dba58189dbbc
    89  DATA  ·kcon+0x038(SB)/8, $0xe9b5dba58189dbbc
    90  DATA  ·kcon+0x040(SB)/8, $0x3956c25bf348b538
    91  DATA  ·kcon+0x048(SB)/8, $0x3956c25bf348b538
    92  DATA  ·kcon+0x050(SB)/8, $0x59f111f1b605d019
    93  DATA  ·kcon+0x058(SB)/8, $0x59f111f1b605d019
    94  DATA  ·kcon+0x060(SB)/8, $0x923f82a4af194f9b
    95  DATA  ·kcon+0x068(SB)/8, $0x923f82a4af194f9b
    96  DATA  ·kcon+0x070(SB)/8, $0xab1c5ed5da6d8118
    97  DATA  ·kcon+0x078(SB)/8, $0xab1c5ed5da6d8118
    98  DATA  ·kcon+0x080(SB)/8, $0xd807aa98a3030242
    99  DATA  ·kcon+0x088(SB)/8, $0xd807aa98a3030242
   100  DATA  ·kcon+0x090(SB)/8, $0x12835b0145706fbe
   101  DATA  ·kcon+0x098(SB)/8, $0x12835b0145706fbe
   102  DATA  ·kcon+0x0A0(SB)/8, $0x243185be4ee4b28c
   103  DATA  ·kcon+0x0A8(SB)/8, $0x243185be4ee4b28c
   104  DATA  ·kcon+0x0B0(SB)/8, $0x550c7dc3d5ffb4e2
   105  DATA  ·kcon+0x0B8(SB)/8, $0x550c7dc3d5ffb4e2
   106  DATA  ·kcon+0x0C0(SB)/8, $0x72be5d74f27b896f
   107  DATA  ·kcon+0x0C8(SB)/8, $0x72be5d74f27b896f
   108  DATA  ·kcon+0x0D0(SB)/8, $0x80deb1fe3b1696b1
   109  DATA  ·kcon+0x0D8(SB)/8, $0x80deb1fe3b1696b1
   110  DATA  ·kcon+0x0E0(SB)/8, $0x9bdc06a725c71235
   111  DATA  ·kcon+0x0E8(SB)/8, $0x9bdc06a725c71235
   112  DATA  ·kcon+0x0F0(SB)/8, $0xc19bf174cf692694
   113  DATA  ·kcon+0x0F8(SB)/8, $0xc19bf174cf692694
   114  DATA  ·kcon+0x100(SB)/8, $0xe49b69c19ef14ad2
   115  DATA  ·kcon+0x108(SB)/8, $0xe49b69c19ef14ad2
   116  DATA  ·kcon+0x110(SB)/8, $0xefbe4786384f25e3
   117  DATA  ·kcon+0x118(SB)/8, $0xefbe4786384f25e3
   118  DATA  ·kcon+0x120(SB)/8, $0x0fc19dc68b8cd5b5
   119  DATA  ·kcon+0x128(SB)/8, $0x0fc19dc68b8cd5b5
   120  DATA  ·kcon+0x130(SB)/8, $0x240ca1cc77ac9c65
   121  DATA  ·kcon+0x138(SB)/8, $0x240ca1cc77ac9c65
   122  DATA  ·kcon+0x140(SB)/8, $0x2de92c6f592b0275
   123  DATA  ·kcon+0x148(SB)/8, $0x2de92c6f592b0275
   124  DATA  ·kcon+0x150(SB)/8, $0x4a7484aa6ea6e483
   125  DATA  ·kcon+0x158(SB)/8, $0x4a7484aa6ea6e483
   126  DATA  ·kcon+0x160(SB)/8, $0x5cb0a9dcbd41fbd4
   127  DATA  ·kcon+0x168(SB)/8, $0x5cb0a9dcbd41fbd4
   128  DATA  ·kcon+0x170(SB)/8, $0x76f988da831153b5
   129  DATA  ·kcon+0x178(SB)/8, $0x76f988da831153b5
   130  DATA  ·kcon+0x180(SB)/8, $0x983e5152ee66dfab
   131  DATA  ·kcon+0x188(SB)/8, $0x983e5152ee66dfab
   132  DATA  ·kcon+0x190(SB)/8, $0xa831c66d2db43210
   133  DATA  ·kcon+0x198(SB)/8, $0xa831c66d2db43210
   134  DATA  ·kcon+0x1A0(SB)/8, $0xb00327c898fb213f
   135  DATA  ·kcon+0x1A8(SB)/8, $0xb00327c898fb213f
   136  DATA  ·kcon+0x1B0(SB)/8, $0xbf597fc7beef0ee4
   137  DATA  ·kcon+0x1B8(SB)/8, $0xbf597fc7beef0ee4
   138  DATA  ·kcon+0x1C0(SB)/8, $0xc6e00bf33da88fc2
   139  DATA  ·kcon+0x1C8(SB)/8, $0xc6e00bf33da88fc2
   140  DATA  ·kcon+0x1D0(SB)/8, $0xd5a79147930aa725
   141  DATA  ·kcon+0x1D8(SB)/8, $0xd5a79147930aa725
   142  DATA  ·kcon+0x1E0(SB)/8, $0x06ca6351e003826f
   143  DATA  ·kcon+0x1E8(SB)/8, $0x06ca6351e003826f
   144  DATA  ·kcon+0x1F0(SB)/8, $0x142929670a0e6e70
   145  DATA  ·kcon+0x1F8(SB)/8, $0x142929670a0e6e70
   146  DATA  ·kcon+0x200(SB)/8, $0x27b70a8546d22ffc
   147  DATA  ·kcon+0x208(SB)/8, $0x27b70a8546d22ffc
   148  DATA  ·kcon+0x210(SB)/8, $0x2e1b21385c26c926
   149  DATA  ·kcon+0x218(SB)/8, $0x2e1b21385c26c926
   150  DATA  ·kcon+0x220(SB)/8, $0x4d2c6dfc5ac42aed
   151  DATA  ·kcon+0x228(SB)/8, $0x4d2c6dfc5ac42aed
   152  DATA  ·kcon+0x230(SB)/8, $0x53380d139d95b3df
   153  DATA  ·kcon+0x238(SB)/8, $0x53380d139d95b3df
   154  DATA  ·kcon+0x240(SB)/8, $0x650a73548baf63de
   155  DATA  ·kcon+0x248(SB)/8, $0x650a73548baf63de
   156  DATA  ·kcon+0x250(SB)/8, $0x766a0abb3c77b2a8
   157  DATA  ·kcon+0x258(SB)/8, $0x766a0abb3c77b2a8
   158  DATA  ·kcon+0x260(SB)/8, $0x81c2c92e47edaee6
   159  DATA  ·kcon+0x268(SB)/8, $0x81c2c92e47edaee6
   160  DATA  ·kcon+0x270(SB)/8, $0x92722c851482353b
   161  DATA  ·kcon+0x278(SB)/8, $0x92722c851482353b
   162  DATA  ·kcon+0x280(SB)/8, $0xa2bfe8a14cf10364
   163  DATA  ·kcon+0x288(SB)/8, $0xa2bfe8a14cf10364
   164  DATA  ·kcon+0x290(SB)/8, $0xa81a664bbc423001
   165  DATA  ·kcon+0x298(SB)/8, $0xa81a664bbc423001
   166  DATA  ·kcon+0x2A0(SB)/8, $0xc24b8b70d0f89791
   167  DATA  ·kcon+0x2A8(SB)/8, $0xc24b8b70d0f89791
   168  DATA  ·kcon+0x2B0(SB)/8, $0xc76c51a30654be30
   169  DATA  ·kcon+0x2B8(SB)/8, $0xc76c51a30654be30
   170  DATA  ·kcon+0x2C0(SB)/8, $0xd192e819d6ef5218
   171  DATA  ·kcon+0x2C8(SB)/8, $0xd192e819d6ef5218
   172  DATA  ·kcon+0x2D0(SB)/8, $0xd69906245565a910
   173  DATA  ·kcon+0x2D8(SB)/8, $0xd69906245565a910
   174  DATA  ·kcon+0x2E0(SB)/8, $0xf40e35855771202a
   175  DATA  ·kcon+0x2E8(SB)/8, $0xf40e35855771202a
   176  DATA  ·kcon+0x2F0(SB)/8, $0x106aa07032bbd1b8
   177  DATA  ·kcon+0x2F8(SB)/8, $0x106aa07032bbd1b8
   178  DATA  ·kcon+0x300(SB)/8, $0x19a4c116b8d2d0c8
   179  DATA  ·kcon+0x308(SB)/8, $0x19a4c116b8d2d0c8
   180  DATA  ·kcon+0x310(SB)/8, $0x1e376c085141ab53
   181  DATA  ·kcon+0x318(SB)/8, $0x1e376c085141ab53
   182  DATA  ·kcon+0x320(SB)/8, $0x2748774cdf8eeb99
   183  DATA  ·kcon+0x328(SB)/8, $0x2748774cdf8eeb99
   184  DATA  ·kcon+0x330(SB)/8, $0x34b0bcb5e19b48a8
   185  DATA  ·kcon+0x338(SB)/8, $0x34b0bcb5e19b48a8
   186  DATA  ·kcon+0x340(SB)/8, $0x391c0cb3c5c95a63
   187  DATA  ·kcon+0x348(SB)/8, $0x391c0cb3c5c95a63
   188  DATA  ·kcon+0x350(SB)/8, $0x4ed8aa4ae3418acb
   189  DATA  ·kcon+0x358(SB)/8, $0x4ed8aa4ae3418acb
   190  DATA  ·kcon+0x360(SB)/8, $0x5b9cca4f7763e373
   191  DATA  ·kcon+0x368(SB)/8, $0x5b9cca4f7763e373
   192  DATA  ·kcon+0x370(SB)/8, $0x682e6ff3d6b2b8a3
   193  DATA  ·kcon+0x378(SB)/8, $0x682e6ff3d6b2b8a3
   194  DATA  ·kcon+0x380(SB)/8, $0x748f82ee5defb2fc
   195  DATA  ·kcon+0x388(SB)/8, $0x748f82ee5defb2fc
   196  DATA  ·kcon+0x390(SB)/8, $0x78a5636f43172f60
   197  DATA  ·kcon+0x398(SB)/8, $0x78a5636f43172f60
   198  DATA  ·kcon+0x3A0(SB)/8, $0x84c87814a1f0ab72
   199  DATA  ·kcon+0x3A8(SB)/8, $0x84c87814a1f0ab72
   200  DATA  ·kcon+0x3B0(SB)/8, $0x8cc702081a6439ec
   201  DATA  ·kcon+0x3B8(SB)/8, $0x8cc702081a6439ec
   202  DATA  ·kcon+0x3C0(SB)/8, $0x90befffa23631e28
   203  DATA  ·kcon+0x3C8(SB)/8, $0x90befffa23631e28
   204  DATA  ·kcon+0x3D0(SB)/8, $0xa4506cebde82bde9
   205  DATA  ·kcon+0x3D8(SB)/8, $0xa4506cebde82bde9
   206  DATA  ·kcon+0x3E0(SB)/8, $0xbef9a3f7b2c67915
   207  DATA  ·kcon+0x3E8(SB)/8, $0xbef9a3f7b2c67915
   208  DATA  ·kcon+0x3F0(SB)/8, $0xc67178f2e372532b
   209  DATA  ·kcon+0x3F8(SB)/8, $0xc67178f2e372532b
   210  DATA  ·kcon+0x400(SB)/8, $0xca273eceea26619c
   211  DATA  ·kcon+0x408(SB)/8, $0xca273eceea26619c
   212  DATA  ·kcon+0x410(SB)/8, $0xd186b8c721c0c207
   213  DATA  ·kcon+0x418(SB)/8, $0xd186b8c721c0c207
   214  DATA  ·kcon+0x420(SB)/8, $0xeada7dd6cde0eb1e
   215  DATA  ·kcon+0x428(SB)/8, $0xeada7dd6cde0eb1e
   216  DATA  ·kcon+0x430(SB)/8, $0xf57d4f7fee6ed178
   217  DATA  ·kcon+0x438(SB)/8, $0xf57d4f7fee6ed178
   218  DATA  ·kcon+0x440(SB)/8, $0x06f067aa72176fba
   219  DATA  ·kcon+0x448(SB)/8, $0x06f067aa72176fba
   220  DATA  ·kcon+0x450(SB)/8, $0x0a637dc5a2c898a6
   221  DATA  ·kcon+0x458(SB)/8, $0x0a637dc5a2c898a6
   222  DATA  ·kcon+0x460(SB)/8, $0x113f9804bef90dae
   223  DATA  ·kcon+0x468(SB)/8, $0x113f9804bef90dae
   224  DATA  ·kcon+0x470(SB)/8, $0x1b710b35131c471b
   225  DATA  ·kcon+0x478(SB)/8, $0x1b710b35131c471b
   226  DATA  ·kcon+0x480(SB)/8, $0x28db77f523047d84
   227  DATA  ·kcon+0x488(SB)/8, $0x28db77f523047d84
   228  DATA  ·kcon+0x490(SB)/8, $0x32caab7b40c72493
   229  DATA  ·kcon+0x498(SB)/8, $0x32caab7b40c72493
   230  DATA  ·kcon+0x4A0(SB)/8, $0x3c9ebe0a15c9bebc
   231  DATA  ·kcon+0x4A8(SB)/8, $0x3c9ebe0a15c9bebc
   232  DATA  ·kcon+0x4B0(SB)/8, $0x431d67c49c100d4c
   233  DATA  ·kcon+0x4B8(SB)/8, $0x431d67c49c100d4c
   234  DATA  ·kcon+0x4C0(SB)/8, $0x4cc5d4becb3e42b6
   235  DATA  ·kcon+0x4C8(SB)/8, $0x4cc5d4becb3e42b6
   236  DATA  ·kcon+0x4D0(SB)/8, $0x597f299cfc657e2a
   237  DATA  ·kcon+0x4D8(SB)/8, $0x597f299cfc657e2a
   238  DATA  ·kcon+0x4E0(SB)/8, $0x5fcb6fab3ad6faec
   239  DATA  ·kcon+0x4E8(SB)/8, $0x5fcb6fab3ad6faec
   240  DATA  ·kcon+0x4F0(SB)/8, $0x6c44198c4a475817
   241  DATA  ·kcon+0x4F8(SB)/8, $0x6c44198c4a475817
   242  DATA  ·kcon+0x500(SB)/8, $0x0000000000000000
   243  DATA  ·kcon+0x508(SB)/8, $0x0000000000000000
   244  DATA  ·kcon+0x510(SB)/8, $0x1011121314151617
   245  DATA  ·kcon+0x518(SB)/8, $0x0001020304050607
   246  GLOBL ·kcon(SB), RODATA, $1312
   247  
   248  #define SHA512ROUND0(a, b, c, d, e, f, g, h, xi) \
   249  	VSEL		g, f, e, FUNC; \
   250  	VSHASIGMAD	$15, e, $1, S1; \
   251  	VADDUDM		xi, h, h; \
   252  	VSHASIGMAD	$0, a, $1, S0; \
   253  	VADDUDM		FUNC, h, h; \
   254  	VXOR		b, a, FUNC; \
   255  	VADDUDM		S1, h, h; \
   256  	VSEL		b, c, FUNC, FUNC; \
   257  	VADDUDM		KI, g, g; \
   258  	VADDUDM		h, d, d; \
   259  	VADDUDM		FUNC, S0, S0; \
   260  	LVX		(TBL)(IDX), KI; \
   261  	ADD		$16, IDX; \
   262  	VADDUDM		S0, h, h
   263  
   264  #define SHA512ROUND1(a, b, c, d, e, f, g, h, xi, xj, xj_1, xj_9, xj_14) \
   265  	VSHASIGMAD	$0, xj_1, $0, s0; \
   266  	VSEL		g, f, e, FUNC; \
   267  	VSHASIGMAD	$15, e, $1, S1; \
   268  	VADDUDM		xi, h, h; \
   269  	VSHASIGMAD	$0, a, $1, S0; \
   270  	VSHASIGMAD	$15, xj_14, $0, s1; \
   271  	VADDUDM		FUNC, h, h; \
   272  	VXOR		b, a, FUNC; \
   273  	VADDUDM		xj_9, xj, xj; \
   274  	VADDUDM		S1, h, h; \
   275  	VSEL		b, c, FUNC, FUNC; \
   276  	VADDUDM		KI, g, g; \
   277  	VADDUDM		h, d, d; \
   278  	VADDUDM		FUNC, S0, S0; \
   279  	VADDUDM		s0, xj, xj; \
   280  	LVX		(TBL)(IDX), KI; \
   281  	ADD		$16, IDX; \
   282  	VADDUDM		S0, h, h; \
   283  	VADDUDM		s1, xj, xj
   284  
   285  // func block(dig *digest, p []byte)
   286  TEXT ·block(SB),0,$128-32
   287  	MOVD	dig+0(FP), CTX
   288  	MOVD	p_base+8(FP), INP
   289  	MOVD	p_len+16(FP), LEN
   290  
   291  	SRD	$6, LEN
   292  	SLD	$6, LEN
   293  
   294  	ADD	INP, LEN, END
   295  
   296  	CMP	INP, END
   297  	BEQ	end
   298  
   299  	MOVD	$·kcon(SB), TBL
   300  	MOVD	R1, OFFLOAD
   301  
   302  	MOVD	R0, CNT
   303  	MOVWZ	$0x10, HEX10
   304  	MOVWZ	$0x20, HEX20
   305  	MOVWZ	$0x30, HEX30
   306  	MOVWZ	$0x40, HEX40
   307  	MOVWZ	$0x50, HEX50
   308  	MOVWZ	$0x60, HEX60
   309  	MOVWZ	$0x70, HEX70
   310  
   311  	MOVWZ	$8, IDX
   312  	LVSL	(IDX)(R0), LEMASK
   313  	VSPLTISB	$0x0F, KI
   314  	VXOR	KI, LEMASK, LEMASK
   315  
   316  	LXVD2X	(CTX)(HEX00), VS32	// v0 = vs32
   317  	LXVD2X	(CTX)(HEX10), VS34	// v2 = vs34
   318  	LXVD2X	(CTX)(HEX20), VS36	// v4 = vs36
   319  	// unpack the input values into vector registers
   320  	VSLDOI	$8, V0, V0, V1
   321  	LXVD2X	(CTX)(HEX30), VS38	// v6 = vs38
   322  	VSLDOI	$8, V2, V2, V3
   323  	VSLDOI	$8, V4, V4, V5
   324  	VSLDOI	$8, V6, V6, V7
   325  
   326  loop:
   327  	LVX	(TBL)(HEX00), KI
   328  	MOVWZ	$16, IDX
   329  
   330  	LXVD2X	(INP)(R0), VS40	// load v8 (=vs40) in advance
   331  	ADD	$16, INP
   332  
   333  	STVX	V0, (OFFLOAD+HEX00)
   334  	STVX	V1, (OFFLOAD+HEX10)
   335  	STVX	V2, (OFFLOAD+HEX20)
   336  	STVX	V3, (OFFLOAD+HEX30)
   337  	STVX	V4, (OFFLOAD+HEX40)
   338  	STVX	V5, (OFFLOAD+HEX50)
   339  	STVX	V6, (OFFLOAD+HEX60)
   340  	STVX	V7, (OFFLOAD+HEX70)
   341  
   342  	VADDUDM	KI, V7, V7	// h+K[i]
   343  	LVX	(TBL)(IDX), KI
   344  	ADD	$16, IDX
   345  
   346  	VPERM	V8, V8, LEMASK, V8
   347  	SHA512ROUND0(V0, V1, V2, V3, V4, V5, V6, V7, V8)
   348  	LXVD2X	(INP)(R0), VS42	// load v10 (=vs42) in advance
   349  	ADD	$16, INP, INP
   350  	VSLDOI	$8, V8, V8, V9
   351  	SHA512ROUND0(V7, V0, V1, V2, V3, V4, V5, V6, V9)
   352  	VPERM	V10, V10, LEMASK, V10
   353  	SHA512ROUND0(V6, V7, V0, V1, V2, V3, V4, V5, V10)
   354  	LXVD2X	(INP)(R0), VS44	// load v12 (=vs44) in advance
   355  	ADD	$16, INP, INP
   356  	VSLDOI	$8, V10, V10, V11
   357  	SHA512ROUND0(V5, V6, V7, V0, V1, V2, V3, V4, V11)
   358  	VPERM	V12, V12, LEMASK, V12
   359  	SHA512ROUND0(V4, V5, V6, V7, V0, V1, V2, V3, V12)
   360  	LXVD2X	(INP)(R0), VS46	// load v14 (=vs46) in advance
   361  	ADD	$16, INP, INP
   362  	VSLDOI	$8, V12, V12, V13
   363  	SHA512ROUND0(V3, V4, V5, V6, V7, V0, V1, V2, V13)
   364  	VPERM	V14, V14, LEMASK, V14
   365  	SHA512ROUND0(V2, V3, V4, V5, V6, V7, V0, V1, V14)
   366  	LXVD2X	(INP)(R0), VS48	// load v16 (=vs48) in advance
   367  	ADD	$16, INP, INP
   368  	VSLDOI	$8, V14, V14, V15
   369  	SHA512ROUND0(V1, V2, V3, V4, V5, V6, V7, V0, V15)
   370  	VPERM	V16, V16, LEMASK, V16
   371  	SHA512ROUND0(V0, V1, V2, V3, V4, V5, V6, V7, V16)
   372  	LXVD2X	(INP)(R0), VS50	// load v18 (=vs50) in advance
   373  	ADD	$16, INP, INP
   374  	VSLDOI	$8, V16, V16, V17
   375  	SHA512ROUND0(V7, V0, V1, V2, V3, V4, V5, V6, V17)
   376  	VPERM	V18, V18, LEMASK, V18
   377  	SHA512ROUND0(V6, V7, V0, V1, V2, V3, V4, V5, V18)
   378  	LXVD2X	(INP)(R0), VS52	// load v20 (=vs52) in advance
   379  	ADD	$16, INP, INP
   380  	VSLDOI	$8, V18, V18, V19
   381  	SHA512ROUND0(V5, V6, V7, V0, V1, V2, V3, V4, V19)
   382  	VPERM	V20, V20, LEMASK, V20
   383  	SHA512ROUND0(V4, V5, V6, V7, V0, V1, V2, V3, V20)
   384  	LXVD2X	(INP)(R0), VS54	// load v22 (=vs54) in advance
   385  	ADD	$16, INP, INP
   386  	VSLDOI	$8, V20, V20, V21
   387  	SHA512ROUND0(V3, V4, V5, V6, V7, V0, V1, V2, V21)
   388  	VPERM	V22, V22, LEMASK, V22
   389  	SHA512ROUND0(V2, V3, V4, V5, V6, V7, V0, V1, V22)
   390  	VSLDOI	$8, V22, V22, V23
   391  	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V23, V8, V9, V17, V22)
   392  
   393  	MOVWZ	$4, TEMP
   394  	MOVWZ	TEMP, CTR
   395  
   396  L16_xx:
   397  	SHA512ROUND1(V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V18, V23)
   398  	SHA512ROUND1(V7, V0, V1, V2, V3, V4, V5, V6, V9, V10, V11, V19, V8)
   399  	SHA512ROUND1(V6, V7, V0, V1, V2, V3, V4, V5, V10, V11, V12, V20, V9)
   400  	SHA512ROUND1(V5, V6, V7, V0, V1, V2, V3, V4, V11, V12, V13, V21, V10)
   401  	SHA512ROUND1(V4, V5, V6, V7, V0, V1, V2, V3, V12, V13, V14, V22, V11)
   402  	SHA512ROUND1(V3, V4, V5, V6, V7, V0, V1, V2, V13, V14, V15, V23, V12)
   403  	SHA512ROUND1(V2, V3, V4, V5, V6, V7, V0, V1, V14, V15, V16, V8, V13)
   404  	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V15, V16, V17, V9, V14)
   405  	SHA512ROUND1(V0, V1, V2, V3, V4, V5, V6, V7, V16, V17, V18, V10, V15)
   406  	SHA512ROUND1(V7, V0, V1, V2, V3, V4, V5, V6, V17, V18, V19, V11, V16)
   407  	SHA512ROUND1(V6, V7, V0, V1, V2, V3, V4, V5, V18, V19, V20, V12, V17)
   408  	SHA512ROUND1(V5, V6, V7, V0, V1, V2, V3, V4, V19, V20, V21, V13, V18)
   409  	SHA512ROUND1(V4, V5, V6, V7, V0, V1, V2, V3, V20, V21, V22, V14, V19)
   410  	SHA512ROUND1(V3, V4, V5, V6, V7, V0, V1, V2, V21, V22, V23, V15, V20)
   411  	SHA512ROUND1(V2, V3, V4, V5, V6, V7, V0, V1, V22, V23, V8, V16, V21)
   412  	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V23, V8, V9, V17, V22)
   413  
   414  	BC	0x10, 0, L16_xx		// bdnz
   415  
   416  	LVX	(OFFLOAD)(HEX00), V10
   417  
   418  	LVX	(OFFLOAD)(HEX10), V11
   419  	VADDUDM	V10, V0, V0
   420  	LVX	(OFFLOAD)(HEX20), V12
   421  	VADDUDM	V11, V1, V1
   422  	LVX	(OFFLOAD)(HEX30), V13
   423  	VADDUDM	V12, V2, V2
   424  	LVX	(OFFLOAD)(HEX40), V14
   425  	VADDUDM	V13, V3, V3
   426  	LVX	(OFFLOAD)(HEX50), V15
   427  	VADDUDM	V14, V4, V4
   428  	LVX	(OFFLOAD)(HEX60), V16
   429  	VADDUDM	V15, V5, V5
   430  	LVX	(OFFLOAD)(HEX70), V17
   431  	VADDUDM	V16, V6, V6
   432  	VADDUDM	V17, V7, V7
   433  
   434  	CMPU	INP, END
   435  	BLT	loop
   436  
   437  	VPERM	V0, V1, KI, V0
   438  	VPERM	V2, V3, KI, V2
   439  	VPERM	V4, V5, KI, V4
   440  	VPERM	V6, V7, KI, V6
   441  	STXVD2X	VS32, (CTX+HEX00)	// v0 = vs32
   442  	STXVD2X	VS34, (CTX+HEX10)	// v2 = vs34
   443  	STXVD2X	VS36, (CTX+HEX20)	// v4 = vs36
   444  	STXVD2X	VS38, (CTX+HEX30)	// v6 = vs38
   445  
   446  end:
   447  	RET
   448