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Text file src/crypto/sha512/sha512block_ppc64le.s

Documentation: crypto/sha512

     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// Based on CRYPTOGAMS code with the following comment:
     6// # ====================================================================
     7// # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
     8// # project. The module is, however, dual licensed under OpenSSL and
     9// # CRYPTOGAMS licenses depending on where you obtain it. For further
    10// # details see http://www.openssl.org/~appro/cryptogams/.
    11// # ====================================================================
    12
    13#include "textflag.h"
    14
    15// SHA512 block routine. See sha512block.go for Go equivalent.
    16//
    17// The algorithm is detailed in FIPS 180-4:
    18//
    19//  https://csrc.nist.gov/publications/fips/fips180-4/fips-180-4.pdf
    20//
    21// Wt = Mt; for 0 <= t <= 15
    22// Wt = SIGMA1(Wt-2) + SIGMA0(Wt-15) + Wt-16; for 16 <= t <= 79
    23//
    24// a = H0
    25// b = H1
    26// c = H2
    27// d = H3
    28// e = H4
    29// f = H5
    30// g = H6
    31// h = H7
    32//
    33// for t = 0 to 79 {
    34//    T1 = h + BIGSIGMA1(e) + Ch(e,f,g) + Kt + Wt
    35//    T2 = BIGSIGMA0(a) + Maj(a,b,c)
    36//    h = g
    37//    g = f
    38//    f = e
    39//    e = d + T1
    40//    d = c
    41//    c = b
    42//    b = a
    43//    a = T1 + T2
    44// }
    45//
    46// H0 = a + H0
    47// H1 = b + H1
    48// H2 = c + H2
    49// H3 = d + H3
    50// H4 = e + H4
    51// H5 = f + H5
    52// H6 = g + H6
    53// H7 = h + H7
    54
    55#define CTX	R3
    56#define INP	R4
    57#define END	R5
    58#define TBL	R6
    59#define IDX	R7
    60#define CNT	R8
    61#define LEN	R9
    62#define OFFLOAD	R11
    63#define TEMP	R12
    64
    65#define HEX00	R0
    66#define HEX10	R10
    67#define HEX20	R25
    68#define HEX30	R26
    69#define HEX40	R27
    70#define HEX50	R28
    71#define HEX60	R29
    72#define HEX70	R31
    73
    74// V0-V7 are A-H
    75// V8-V23 are used for the message schedule
    76#define KI	V24
    77#define FUNC	V25
    78#define S0	V26
    79#define S1	V27
    80#define s0	V28
    81#define s1	V29
    82#define LEMASK	V31	// Permutation control register for little endian
    83
    84// 2 copies of each Kt, to fill both doublewords of a vector register
    85DATA  ·kcon+0x000(SB)/8, $0x428a2f98d728ae22
    86DATA  ·kcon+0x008(SB)/8, $0x428a2f98d728ae22
    87DATA  ·kcon+0x010(SB)/8, $0x7137449123ef65cd
    88DATA  ·kcon+0x018(SB)/8, $0x7137449123ef65cd
    89DATA  ·kcon+0x020(SB)/8, $0xb5c0fbcfec4d3b2f
    90DATA  ·kcon+0x028(SB)/8, $0xb5c0fbcfec4d3b2f
    91DATA  ·kcon+0x030(SB)/8, $0xe9b5dba58189dbbc
    92DATA  ·kcon+0x038(SB)/8, $0xe9b5dba58189dbbc
    93DATA  ·kcon+0x040(SB)/8, $0x3956c25bf348b538
    94DATA  ·kcon+0x048(SB)/8, $0x3956c25bf348b538
    95DATA  ·kcon+0x050(SB)/8, $0x59f111f1b605d019
    96DATA  ·kcon+0x058(SB)/8, $0x59f111f1b605d019
    97DATA  ·kcon+0x060(SB)/8, $0x923f82a4af194f9b
    98DATA  ·kcon+0x068(SB)/8, $0x923f82a4af194f9b
    99DATA  ·kcon+0x070(SB)/8, $0xab1c5ed5da6d8118
   100DATA  ·kcon+0x078(SB)/8, $0xab1c5ed5da6d8118
   101DATA  ·kcon+0x080(SB)/8, $0xd807aa98a3030242
   102DATA  ·kcon+0x088(SB)/8, $0xd807aa98a3030242
   103DATA  ·kcon+0x090(SB)/8, $0x12835b0145706fbe
   104DATA  ·kcon+0x098(SB)/8, $0x12835b0145706fbe
   105DATA  ·kcon+0x0A0(SB)/8, $0x243185be4ee4b28c
   106DATA  ·kcon+0x0A8(SB)/8, $0x243185be4ee4b28c
   107DATA  ·kcon+0x0B0(SB)/8, $0x550c7dc3d5ffb4e2
   108DATA  ·kcon+0x0B8(SB)/8, $0x550c7dc3d5ffb4e2
   109DATA  ·kcon+0x0C0(SB)/8, $0x72be5d74f27b896f
   110DATA  ·kcon+0x0C8(SB)/8, $0x72be5d74f27b896f
   111DATA  ·kcon+0x0D0(SB)/8, $0x80deb1fe3b1696b1
   112DATA  ·kcon+0x0D8(SB)/8, $0x80deb1fe3b1696b1
   113DATA  ·kcon+0x0E0(SB)/8, $0x9bdc06a725c71235
   114DATA  ·kcon+0x0E8(SB)/8, $0x9bdc06a725c71235
   115DATA  ·kcon+0x0F0(SB)/8, $0xc19bf174cf692694
   116DATA  ·kcon+0x0F8(SB)/8, $0xc19bf174cf692694
   117DATA  ·kcon+0x100(SB)/8, $0xe49b69c19ef14ad2
   118DATA  ·kcon+0x108(SB)/8, $0xe49b69c19ef14ad2
   119DATA  ·kcon+0x110(SB)/8, $0xefbe4786384f25e3
   120DATA  ·kcon+0x118(SB)/8, $0xefbe4786384f25e3
   121DATA  ·kcon+0x120(SB)/8, $0x0fc19dc68b8cd5b5
   122DATA  ·kcon+0x128(SB)/8, $0x0fc19dc68b8cd5b5
   123DATA  ·kcon+0x130(SB)/8, $0x240ca1cc77ac9c65
   124DATA  ·kcon+0x138(SB)/8, $0x240ca1cc77ac9c65
   125DATA  ·kcon+0x140(SB)/8, $0x2de92c6f592b0275
   126DATA  ·kcon+0x148(SB)/8, $0x2de92c6f592b0275
   127DATA  ·kcon+0x150(SB)/8, $0x4a7484aa6ea6e483
   128DATA  ·kcon+0x158(SB)/8, $0x4a7484aa6ea6e483
   129DATA  ·kcon+0x160(SB)/8, $0x5cb0a9dcbd41fbd4
   130DATA  ·kcon+0x168(SB)/8, $0x5cb0a9dcbd41fbd4
   131DATA  ·kcon+0x170(SB)/8, $0x76f988da831153b5
   132DATA  ·kcon+0x178(SB)/8, $0x76f988da831153b5
   133DATA  ·kcon+0x180(SB)/8, $0x983e5152ee66dfab
   134DATA  ·kcon+0x188(SB)/8, $0x983e5152ee66dfab
   135DATA  ·kcon+0x190(SB)/8, $0xa831c66d2db43210
   136DATA  ·kcon+0x198(SB)/8, $0xa831c66d2db43210
   137DATA  ·kcon+0x1A0(SB)/8, $0xb00327c898fb213f
   138DATA  ·kcon+0x1A8(SB)/8, $0xb00327c898fb213f
   139DATA  ·kcon+0x1B0(SB)/8, $0xbf597fc7beef0ee4
   140DATA  ·kcon+0x1B8(SB)/8, $0xbf597fc7beef0ee4
   141DATA  ·kcon+0x1C0(SB)/8, $0xc6e00bf33da88fc2
   142DATA  ·kcon+0x1C8(SB)/8, $0xc6e00bf33da88fc2
   143DATA  ·kcon+0x1D0(SB)/8, $0xd5a79147930aa725
   144DATA  ·kcon+0x1D8(SB)/8, $0xd5a79147930aa725
   145DATA  ·kcon+0x1E0(SB)/8, $0x06ca6351e003826f
   146DATA  ·kcon+0x1E8(SB)/8, $0x06ca6351e003826f
   147DATA  ·kcon+0x1F0(SB)/8, $0x142929670a0e6e70
   148DATA  ·kcon+0x1F8(SB)/8, $0x142929670a0e6e70
   149DATA  ·kcon+0x200(SB)/8, $0x27b70a8546d22ffc
   150DATA  ·kcon+0x208(SB)/8, $0x27b70a8546d22ffc
   151DATA  ·kcon+0x210(SB)/8, $0x2e1b21385c26c926
   152DATA  ·kcon+0x218(SB)/8, $0x2e1b21385c26c926
   153DATA  ·kcon+0x220(SB)/8, $0x4d2c6dfc5ac42aed
   154DATA  ·kcon+0x228(SB)/8, $0x4d2c6dfc5ac42aed
   155DATA  ·kcon+0x230(SB)/8, $0x53380d139d95b3df
   156DATA  ·kcon+0x238(SB)/8, $0x53380d139d95b3df
   157DATA  ·kcon+0x240(SB)/8, $0x650a73548baf63de
   158DATA  ·kcon+0x248(SB)/8, $0x650a73548baf63de
   159DATA  ·kcon+0x250(SB)/8, $0x766a0abb3c77b2a8
   160DATA  ·kcon+0x258(SB)/8, $0x766a0abb3c77b2a8
   161DATA  ·kcon+0x260(SB)/8, $0x81c2c92e47edaee6
   162DATA  ·kcon+0x268(SB)/8, $0x81c2c92e47edaee6
   163DATA  ·kcon+0x270(SB)/8, $0x92722c851482353b
   164DATA  ·kcon+0x278(SB)/8, $0x92722c851482353b
   165DATA  ·kcon+0x280(SB)/8, $0xa2bfe8a14cf10364
   166DATA  ·kcon+0x288(SB)/8, $0xa2bfe8a14cf10364
   167DATA  ·kcon+0x290(SB)/8, $0xa81a664bbc423001
   168DATA  ·kcon+0x298(SB)/8, $0xa81a664bbc423001
   169DATA  ·kcon+0x2A0(SB)/8, $0xc24b8b70d0f89791
   170DATA  ·kcon+0x2A8(SB)/8, $0xc24b8b70d0f89791
   171DATA  ·kcon+0x2B0(SB)/8, $0xc76c51a30654be30
   172DATA  ·kcon+0x2B8(SB)/8, $0xc76c51a30654be30
   173DATA  ·kcon+0x2C0(SB)/8, $0xd192e819d6ef5218
   174DATA  ·kcon+0x2C8(SB)/8, $0xd192e819d6ef5218
   175DATA  ·kcon+0x2D0(SB)/8, $0xd69906245565a910
   176DATA  ·kcon+0x2D8(SB)/8, $0xd69906245565a910
   177DATA  ·kcon+0x2E0(SB)/8, $0xf40e35855771202a
   178DATA  ·kcon+0x2E8(SB)/8, $0xf40e35855771202a
   179DATA  ·kcon+0x2F0(SB)/8, $0x106aa07032bbd1b8
   180DATA  ·kcon+0x2F8(SB)/8, $0x106aa07032bbd1b8
   181DATA  ·kcon+0x300(SB)/8, $0x19a4c116b8d2d0c8
   182DATA  ·kcon+0x308(SB)/8, $0x19a4c116b8d2d0c8
   183DATA  ·kcon+0x310(SB)/8, $0x1e376c085141ab53
   184DATA  ·kcon+0x318(SB)/8, $0x1e376c085141ab53
   185DATA  ·kcon+0x320(SB)/8, $0x2748774cdf8eeb99
   186DATA  ·kcon+0x328(SB)/8, $0x2748774cdf8eeb99
   187DATA  ·kcon+0x330(SB)/8, $0x34b0bcb5e19b48a8
   188DATA  ·kcon+0x338(SB)/8, $0x34b0bcb5e19b48a8
   189DATA  ·kcon+0x340(SB)/8, $0x391c0cb3c5c95a63
   190DATA  ·kcon+0x348(SB)/8, $0x391c0cb3c5c95a63
   191DATA  ·kcon+0x350(SB)/8, $0x4ed8aa4ae3418acb
   192DATA  ·kcon+0x358(SB)/8, $0x4ed8aa4ae3418acb
   193DATA  ·kcon+0x360(SB)/8, $0x5b9cca4f7763e373
   194DATA  ·kcon+0x368(SB)/8, $0x5b9cca4f7763e373
   195DATA  ·kcon+0x370(SB)/8, $0x682e6ff3d6b2b8a3
   196DATA  ·kcon+0x378(SB)/8, $0x682e6ff3d6b2b8a3
   197DATA  ·kcon+0x380(SB)/8, $0x748f82ee5defb2fc
   198DATA  ·kcon+0x388(SB)/8, $0x748f82ee5defb2fc
   199DATA  ·kcon+0x390(SB)/8, $0x78a5636f43172f60
   200DATA  ·kcon+0x398(SB)/8, $0x78a5636f43172f60
   201DATA  ·kcon+0x3A0(SB)/8, $0x84c87814a1f0ab72
   202DATA  ·kcon+0x3A8(SB)/8, $0x84c87814a1f0ab72
   203DATA  ·kcon+0x3B0(SB)/8, $0x8cc702081a6439ec
   204DATA  ·kcon+0x3B8(SB)/8, $0x8cc702081a6439ec
   205DATA  ·kcon+0x3C0(SB)/8, $0x90befffa23631e28
   206DATA  ·kcon+0x3C8(SB)/8, $0x90befffa23631e28
   207DATA  ·kcon+0x3D0(SB)/8, $0xa4506cebde82bde9
   208DATA  ·kcon+0x3D8(SB)/8, $0xa4506cebde82bde9
   209DATA  ·kcon+0x3E0(SB)/8, $0xbef9a3f7b2c67915
   210DATA  ·kcon+0x3E8(SB)/8, $0xbef9a3f7b2c67915
   211DATA  ·kcon+0x3F0(SB)/8, $0xc67178f2e372532b
   212DATA  ·kcon+0x3F8(SB)/8, $0xc67178f2e372532b
   213DATA  ·kcon+0x400(SB)/8, $0xca273eceea26619c
   214DATA  ·kcon+0x408(SB)/8, $0xca273eceea26619c
   215DATA  ·kcon+0x410(SB)/8, $0xd186b8c721c0c207
   216DATA  ·kcon+0x418(SB)/8, $0xd186b8c721c0c207
   217DATA  ·kcon+0x420(SB)/8, $0xeada7dd6cde0eb1e
   218DATA  ·kcon+0x428(SB)/8, $0xeada7dd6cde0eb1e
   219DATA  ·kcon+0x430(SB)/8, $0xf57d4f7fee6ed178
   220DATA  ·kcon+0x438(SB)/8, $0xf57d4f7fee6ed178
   221DATA  ·kcon+0x440(SB)/8, $0x06f067aa72176fba
   222DATA  ·kcon+0x448(SB)/8, $0x06f067aa72176fba
   223DATA  ·kcon+0x450(SB)/8, $0x0a637dc5a2c898a6
   224DATA  ·kcon+0x458(SB)/8, $0x0a637dc5a2c898a6
   225DATA  ·kcon+0x460(SB)/8, $0x113f9804bef90dae
   226DATA  ·kcon+0x468(SB)/8, $0x113f9804bef90dae
   227DATA  ·kcon+0x470(SB)/8, $0x1b710b35131c471b
   228DATA  ·kcon+0x478(SB)/8, $0x1b710b35131c471b
   229DATA  ·kcon+0x480(SB)/8, $0x28db77f523047d84
   230DATA  ·kcon+0x488(SB)/8, $0x28db77f523047d84
   231DATA  ·kcon+0x490(SB)/8, $0x32caab7b40c72493
   232DATA  ·kcon+0x498(SB)/8, $0x32caab7b40c72493
   233DATA  ·kcon+0x4A0(SB)/8, $0x3c9ebe0a15c9bebc
   234DATA  ·kcon+0x4A8(SB)/8, $0x3c9ebe0a15c9bebc
   235DATA  ·kcon+0x4B0(SB)/8, $0x431d67c49c100d4c
   236DATA  ·kcon+0x4B8(SB)/8, $0x431d67c49c100d4c
   237DATA  ·kcon+0x4C0(SB)/8, $0x4cc5d4becb3e42b6
   238DATA  ·kcon+0x4C8(SB)/8, $0x4cc5d4becb3e42b6
   239DATA  ·kcon+0x4D0(SB)/8, $0x597f299cfc657e2a
   240DATA  ·kcon+0x4D8(SB)/8, $0x597f299cfc657e2a
   241DATA  ·kcon+0x4E0(SB)/8, $0x5fcb6fab3ad6faec
   242DATA  ·kcon+0x4E8(SB)/8, $0x5fcb6fab3ad6faec
   243DATA  ·kcon+0x4F0(SB)/8, $0x6c44198c4a475817
   244DATA  ·kcon+0x4F8(SB)/8, $0x6c44198c4a475817
   245DATA  ·kcon+0x500(SB)/8, $0x0000000000000000
   246DATA  ·kcon+0x508(SB)/8, $0x0000000000000000
   247DATA  ·kcon+0x510(SB)/8, $0x1011121314151617
   248DATA  ·kcon+0x518(SB)/8, $0x0001020304050607
   249GLOBL ·kcon(SB), RODATA, $1312
   250
   251#define SHA512ROUND0(a, b, c, d, e, f, g, h, xi) \
   252	VSEL		g, f, e, FUNC; \
   253	VSHASIGMAD	$15, e, $1, S1; \
   254	VADDUDM		xi, h, h; \
   255	VSHASIGMAD	$0, a, $1, S0; \
   256	VADDUDM		FUNC, h, h; \
   257	VXOR		b, a, FUNC; \
   258	VADDUDM		S1, h, h; \
   259	VSEL		b, c, FUNC, FUNC; \
   260	VADDUDM		KI, g, g; \
   261	VADDUDM		h, d, d; \
   262	VADDUDM		FUNC, S0, S0; \
   263	LVX		(TBL)(IDX), KI; \
   264	ADD		$16, IDX; \
   265	VADDUDM		S0, h, h
   266
   267#define SHA512ROUND1(a, b, c, d, e, f, g, h, xi, xj, xj_1, xj_9, xj_14) \
   268	VSHASIGMAD	$0, xj_1, $0, s0; \
   269	VSEL		g, f, e, FUNC; \
   270	VSHASIGMAD	$15, e, $1, S1; \
   271	VADDUDM		xi, h, h; \
   272	VSHASIGMAD	$0, a, $1, S0; \
   273	VSHASIGMAD	$15, xj_14, $0, s1; \
   274	VADDUDM		FUNC, h, h; \
   275	VXOR		b, a, FUNC; \
   276	VADDUDM		xj_9, xj, xj; \
   277	VADDUDM		S1, h, h; \
   278	VSEL		b, c, FUNC, FUNC; \
   279	VADDUDM		KI, g, g; \
   280	VADDUDM		h, d, d; \
   281	VADDUDM		FUNC, S0, S0; \
   282	VADDUDM		s0, xj, xj; \
   283	LVX		(TBL)(IDX), KI; \
   284	ADD		$16, IDX; \
   285	VADDUDM		S0, h, h; \
   286	VADDUDM		s1, xj, xj
   287
   288// func block(dig *digest, p []byte)
   289TEXT ·block(SB),0,$128-32
   290	MOVD	dig+0(FP), CTX
   291	MOVD	p_base+8(FP), INP
   292	MOVD	p_len+16(FP), LEN
   293
   294	SRD	$6, LEN
   295	SLD	$6, LEN
   296
   297	ADD	INP, LEN, END
   298
   299	CMP	INP, END
   300	BEQ	end
   301
   302	MOVD	$·kcon(SB), TBL
   303	MOVD	R1, OFFLOAD
   304
   305	MOVD	R0, CNT
   306	MOVWZ	$0x10, HEX10
   307	MOVWZ	$0x20, HEX20
   308	MOVWZ	$0x30, HEX30
   309	MOVWZ	$0x40, HEX40
   310	MOVWZ	$0x50, HEX50
   311	MOVWZ	$0x60, HEX60
   312	MOVWZ	$0x70, HEX70
   313
   314	MOVWZ	$8, IDX
   315	LVSL	(IDX)(R0), LEMASK
   316	VSPLTISB	$0x0F, KI
   317	VXOR	KI, LEMASK, LEMASK
   318
   319	LXVD2X	(CTX)(HEX00), VS32	// v0 = vs32
   320	LXVD2X	(CTX)(HEX10), VS34	// v2 = vs34
   321	LXVD2X	(CTX)(HEX20), VS36	// v4 = vs36
   322	// unpack the input values into vector registers
   323	VSLDOI	$8, V0, V0, V1
   324	LXVD2X	(CTX)(HEX30), VS38	// v6 = vs38
   325	VSLDOI	$8, V2, V2, V3
   326	VSLDOI	$8, V4, V4, V5
   327	VSLDOI	$8, V6, V6, V7
   328
   329loop:
   330	LVX	(TBL)(HEX00), KI
   331	MOVWZ	$16, IDX
   332
   333	LXVD2X	(INP)(R0), VS40	// load v8 (=vs40) in advance
   334	ADD	$16, INP
   335
   336	STVX	V0, (OFFLOAD+HEX00)
   337	STVX	V1, (OFFLOAD+HEX10)
   338	STVX	V2, (OFFLOAD+HEX20)
   339	STVX	V3, (OFFLOAD+HEX30)
   340	STVX	V4, (OFFLOAD+HEX40)
   341	STVX	V5, (OFFLOAD+HEX50)
   342	STVX	V6, (OFFLOAD+HEX60)
   343	STVX	V7, (OFFLOAD+HEX70)
   344
   345	VADDUDM	KI, V7, V7	// h+K[i]
   346	LVX	(TBL)(IDX), KI
   347	ADD	$16, IDX
   348
   349	VPERM	V8, V8, LEMASK, V8
   350	SHA512ROUND0(V0, V1, V2, V3, V4, V5, V6, V7, V8)
   351	LXVD2X	(INP)(R0), VS42	// load v10 (=vs42) in advance
   352	ADD	$16, INP, INP
   353	VSLDOI	$8, V8, V8, V9
   354	SHA512ROUND0(V7, V0, V1, V2, V3, V4, V5, V6, V9)
   355	VPERM	V10, V10, LEMASK, V10
   356	SHA512ROUND0(V6, V7, V0, V1, V2, V3, V4, V5, V10)
   357	LXVD2X	(INP)(R0), VS44	// load v12 (=vs44) in advance
   358	ADD	$16, INP, INP
   359	VSLDOI	$8, V10, V10, V11
   360	SHA512ROUND0(V5, V6, V7, V0, V1, V2, V3, V4, V11)
   361	VPERM	V12, V12, LEMASK, V12
   362	SHA512ROUND0(V4, V5, V6, V7, V0, V1, V2, V3, V12)
   363	LXVD2X	(INP)(R0), VS46	// load v14 (=vs46) in advance
   364	ADD	$16, INP, INP
   365	VSLDOI	$8, V12, V12, V13
   366	SHA512ROUND0(V3, V4, V5, V6, V7, V0, V1, V2, V13)
   367	VPERM	V14, V14, LEMASK, V14
   368	SHA512ROUND0(V2, V3, V4, V5, V6, V7, V0, V1, V14)
   369	LXVD2X	(INP)(R0), VS48	// load v16 (=vs48) in advance
   370	ADD	$16, INP, INP
   371	VSLDOI	$8, V14, V14, V15
   372	SHA512ROUND0(V1, V2, V3, V4, V5, V6, V7, V0, V15)
   373	VPERM	V16, V16, LEMASK, V16
   374	SHA512ROUND0(V0, V1, V2, V3, V4, V5, V6, V7, V16)
   375	LXVD2X	(INP)(R0), VS50	// load v18 (=vs50) in advance
   376	ADD	$16, INP, INP
   377	VSLDOI	$8, V16, V16, V17
   378	SHA512ROUND0(V7, V0, V1, V2, V3, V4, V5, V6, V17)
   379	VPERM	V18, V18, LEMASK, V18
   380	SHA512ROUND0(V6, V7, V0, V1, V2, V3, V4, V5, V18)
   381	LXVD2X	(INP)(R0), VS52	// load v20 (=vs52) in advance
   382	ADD	$16, INP, INP
   383	VSLDOI	$8, V18, V18, V19
   384	SHA512ROUND0(V5, V6, V7, V0, V1, V2, V3, V4, V19)
   385	VPERM	V20, V20, LEMASK, V20
   386	SHA512ROUND0(V4, V5, V6, V7, V0, V1, V2, V3, V20)
   387	LXVD2X	(INP)(R0), VS54	// load v22 (=vs54) in advance
   388	ADD	$16, INP, INP
   389	VSLDOI	$8, V20, V20, V21
   390	SHA512ROUND0(V3, V4, V5, V6, V7, V0, V1, V2, V21)
   391	VPERM	V22, V22, LEMASK, V22
   392	SHA512ROUND0(V2, V3, V4, V5, V6, V7, V0, V1, V22)
   393	VSLDOI	$8, V22, V22, V23
   394	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V23, V8, V9, V17, V22)
   395
   396	MOVWZ	$4, TEMP
   397	MOVWZ	TEMP, CTR
   398
   399L16_xx:
   400	SHA512ROUND1(V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V18, V23)
   401	SHA512ROUND1(V7, V0, V1, V2, V3, V4, V5, V6, V9, V10, V11, V19, V8)
   402	SHA512ROUND1(V6, V7, V0, V1, V2, V3, V4, V5, V10, V11, V12, V20, V9)
   403	SHA512ROUND1(V5, V6, V7, V0, V1, V2, V3, V4, V11, V12, V13, V21, V10)
   404	SHA512ROUND1(V4, V5, V6, V7, V0, V1, V2, V3, V12, V13, V14, V22, V11)
   405	SHA512ROUND1(V3, V4, V5, V6, V7, V0, V1, V2, V13, V14, V15, V23, V12)
   406	SHA512ROUND1(V2, V3, V4, V5, V6, V7, V0, V1, V14, V15, V16, V8, V13)
   407	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V15, V16, V17, V9, V14)
   408	SHA512ROUND1(V0, V1, V2, V3, V4, V5, V6, V7, V16, V17, V18, V10, V15)
   409	SHA512ROUND1(V7, V0, V1, V2, V3, V4, V5, V6, V17, V18, V19, V11, V16)
   410	SHA512ROUND1(V6, V7, V0, V1, V2, V3, V4, V5, V18, V19, V20, V12, V17)
   411	SHA512ROUND1(V5, V6, V7, V0, V1, V2, V3, V4, V19, V20, V21, V13, V18)
   412	SHA512ROUND1(V4, V5, V6, V7, V0, V1, V2, V3, V20, V21, V22, V14, V19)
   413	SHA512ROUND1(V3, V4, V5, V6, V7, V0, V1, V2, V21, V22, V23, V15, V20)
   414	SHA512ROUND1(V2, V3, V4, V5, V6, V7, V0, V1, V22, V23, V8, V16, V21)
   415	SHA512ROUND1(V1, V2, V3, V4, V5, V6, V7, V0, V23, V8, V9, V17, V22)
   416
   417	BC	0x10, 0, L16_xx		// bdnz
   418
   419	LVX	(OFFLOAD)(HEX00), V10
   420
   421	LVX	(OFFLOAD)(HEX10), V11
   422	VADDUDM	V10, V0, V0
   423	LVX	(OFFLOAD)(HEX20), V12
   424	VADDUDM	V11, V1, V1
   425	LVX	(OFFLOAD)(HEX30), V13
   426	VADDUDM	V12, V2, V2
   427	LVX	(OFFLOAD)(HEX40), V14
   428	VADDUDM	V13, V3, V3
   429	LVX	(OFFLOAD)(HEX50), V15
   430	VADDUDM	V14, V4, V4
   431	LVX	(OFFLOAD)(HEX60), V16
   432	VADDUDM	V15, V5, V5
   433	LVX	(OFFLOAD)(HEX70), V17
   434	VADDUDM	V16, V6, V6
   435	VADDUDM	V17, V7, V7
   436
   437	CMPU	INP, END
   438	BLT	loop
   439
   440	VPERM	V0, V1, KI, V0
   441	VPERM	V2, V3, KI, V2
   442	VPERM	V4, V5, KI, V4
   443	VPERM	V6, V7, KI, V6
   444	STXVD2X	VS32, (CTX+HEX00)	// v0 = vs32
   445	STXVD2X	VS34, (CTX+HEX10)	// v2 = vs34
   446	STXVD2X	VS36, (CTX+HEX20)	// v4 = vs36
   447	STXVD2X	VS38, (CTX+HEX30)	// v6 = vs38
   448
   449end:
   450	RET
   451

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