OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	12/01/2022 06:13:56 PM	rwxr-xr-x
📄 README	370 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe.go	11.56 KB	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_amd64.go	437 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_amd64.s	5.69 KB	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_amd64_noasm.go	354 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_arm64.go	365 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_arm64.s	1.07 KB	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_arm64_noasm.go	325 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 fe_generic.go	8.4 KB	12/01/2022 06:13:01 PM	rw-r--r--
📄 sync.checkpoint	41 bytes	12/01/2022 06:13:01 PM	rw-r--r--
📄 sync.sh	611 bytes	12/01/2022 06:13:01 PM	rw-r--r--

Editing: fe_arm64.s

// Copyright (c) 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build arm64 && gc && !purego
// +build arm64,gc,!purego

#include "textflag.h"

// carryPropagate works exactly like carryPropagateGeneric and uses the
// same AND, ADD, and LSR+MADD instructions emitted by the compiler, but
// avoids loading R0-R4 twice and uses LDP and STP.
//
// See https://golang.org/issues/43145 for the main compiler issue.
//
// func carryPropagate(v *Element)
TEXT ·carryPropagate(SB),NOFRAME|NOSPLIT,$0-8
	MOVD v+0(FP), R20

LDP 0(R20), (R0, R1)
	LDP 16(R20), (R2, R3)
	MOVD 32(R20), R4

AND $0x7ffffffffffff, R0, R10
	AND $0x7ffffffffffff, R1, R11
	AND $0x7ffffffffffff, R2, R12
	AND $0x7ffffffffffff, R3, R13
	AND $0x7ffffffffffff, R4, R14

ADD R0>>51, R11, R11
	ADD R1>>51, R12, R12
	ADD R2>>51, R13, R13
	ADD R3>>51, R14, R14
	// R4>>51 * 19 + R10 -> R10
	LSR $51, R4, R21
	MOVD $19, R22
	MADD R22, R10, R21, R10

STP (R10, R11), 0(R20)
	STP (R12, R13), 16(R20)
	MOVD R14, 32(R20)

RET