}

// facility is a bit index for the named facility.
type facility uint8

const (
	// mandatory facilities
	zarch  facility = 1  // z architecture mode is active
	stflef facility = 7  // store-facility-list-extended
	ldisp  facility = 18 // long-displacement
	eimm   facility = 21 // extended-immediate

	// miscellaneous facilities
	dfp    facility = 42 // decimal-floating-point

		}
	}
	return true
}

// facility is a bit index for the named facility.
type facility uint8

const (
	// mandatory facilities
	zarch  facility = 1  // z architecture mode is active
	stflef facility = 7  // store-facility-list-extended
	ldisp  facility = 18 // long-displacement
	eimm   facility = 21 // extended-immediate

	// miscellaneous facilities
	dfp    facility = 42 // decimal-floating-point

	"fmt"
	"log"
	"net"
	"os"
	"strings"
	"sync"
	"time"
)

// The Priority is a combination of the syslog facility and
// severity. For example, [LOG_ALERT] | [LOG_FTP] sends an alert severity
// message from the FTP facility. The default severity is [LOG_EMERG];
// the default facility is [LOG_KERN].
type Priority int

const severityMask = 0x07
const facilityMask = 0xf8

const (
	// Severity.

	cmd.PersistentFlags().Uint16Var(&o.Port, "ctrlz_port", o.Port,
		"The IP port to use for the ControlZ introspection facility")
	cmd.PersistentFlags().StringVar(&o.Address, "ctrlz_address", o.Address,
		"The IP Address to listen on for the ControlZ introspection facility. Use '*' to indicate all addresses.")

	SRD   $4, R_LEN, R_ITER    // R_ITER is the number of 16-byte chunks
	MOVBZ (R_TMP), R_TMP       // load bool indicating support for vector facility
	CGIJ  $EQ, R_TMP, $0, novx // jump to scalar code if the vector facility is not available

	// Start of vector code (have vector facility).
	//
	// Set R_LEN to be the length mod 16 minus 1 to use as an index for
	// vector 'load with length' (VLL). It will be in the range [-1,14].

// instructions. It must only be called if the vector facility (vx) is
// available.
//
//go:noescape
func updateVX(state *macState, msg []byte)

// mac is a replacement for macGeneric that uses a larger buffer and redirects
// calls that would have gone to updateGeneric to updateVX if the vector
// facility is installed.
//
// A larger buffer is required for good performance because the vector

#include "go_asm.h"
#include "textflag.h"

// Caller must confirm availability of vx facility before calling.
TEXT ·Index(SB),NOSPLIT|NOFRAME,$0-56
	LMG	a_base+0(FP), R1, R2  // R1=&s[0],   R2=len(s)
	LMG	b_base+24(FP), R3, R4 // R3=&sep[0], R4=len(sep)
	MOVD	$ret+48(FP), R5
	BR	indexbody<>(SB)

// Caller must confirm availability of vx facility before calling.
TEXT ·IndexString(SB),NOSPLIT|NOFRAME,$0-40

// skip

// Copyright 2012 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.

// Test the -X facility of the gc linker (6l etc.).
// This test is run by linkx_run.go.

package main

import "fmt"

var tbd string
var overwrite string = "dibs"

var tbdcopy = tbd
var overwritecopy = overwrite
var arraycopy = [2]string{tbd, overwrite}

package chacha20

import "golang.org/x/sys/cpu"

var haveAsm = cpu.S390X.HasVX

const bufSize = 256

// xorKeyStreamVX is an assembly implementation of XORKeyStream. It must only
// be called when the vector facility is available. Implementation in asm_s390x.s.
//
//go:noescape
func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)

func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

import "internal/cpu"

const (
	_HWCAP_VX = 1 << 11 // vector facility
)

func archauxv(tag, val uintptr) {
	switch tag {
	case _AT_HWCAP:
		cpu.HWCap = uint(val)
	}
}

func osArchInit() {}

func checkS390xCPU() {