Text file src/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s

     1	// Copyright 2012 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 code was translated into a form compatible with 6a from the public
     6	// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
     7	
     8	// +build amd64,!gccgo,!appengine
     9	
    10	#include "const_amd64.h"
    11	
    12	// func freeze(inout *[5]uint64)
    13	TEXT ·freeze(SB),7,$0-8
    14		MOVQ inout+0(FP), DI
    15	
    16		MOVQ 0(DI),SI
    17		MOVQ 8(DI),DX
    18		MOVQ 16(DI),CX
    19		MOVQ 24(DI),R8
    20		MOVQ 32(DI),R9
    21		MOVQ $REDMASK51,AX
    22		MOVQ AX,R10
    23		SUBQ $18,R10
    24		MOVQ $3,R11
    25	REDUCELOOP:
    26		MOVQ SI,R12
    27		SHRQ $51,R12
    28		ANDQ AX,SI
    29		ADDQ R12,DX
    30		MOVQ DX,R12
    31		SHRQ $51,R12
    32		ANDQ AX,DX
    33		ADDQ R12,CX
    34		MOVQ CX,R12
    35		SHRQ $51,R12
    36		ANDQ AX,CX
    37		ADDQ R12,R8
    38		MOVQ R8,R12
    39		SHRQ $51,R12
    40		ANDQ AX,R8
    41		ADDQ R12,R9
    42		MOVQ R9,R12
    43		SHRQ $51,R12
    44		ANDQ AX,R9
    45		IMUL3Q $19,R12,R12
    46		ADDQ R12,SI
    47		SUBQ $1,R11
    48		JA REDUCELOOP
    49		MOVQ $1,R12
    50		CMPQ R10,SI
    51		CMOVQLT R11,R12
    52		CMPQ AX,DX
    53		CMOVQNE R11,R12
    54		CMPQ AX,CX
    55		CMOVQNE R11,R12
    56		CMPQ AX,R8
    57		CMOVQNE R11,R12
    58		CMPQ AX,R9
    59		CMOVQNE R11,R12
    60		NEGQ R12
    61		ANDQ R12,AX
    62		ANDQ R12,R10
    63		SUBQ R10,SI
    64		SUBQ AX,DX
    65		SUBQ AX,CX
    66		SUBQ AX,R8
    67		SUBQ AX,R9
    68		MOVQ SI,0(DI)
    69		MOVQ DX,8(DI)
    70		MOVQ CX,16(DI)
    71		MOVQ R8,24(DI)
    72		MOVQ R9,32(DI)
    73		RET

View as plain text