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

//go:build linux && (mips64 || mips64le)

package runtime

import "internal/cpu"

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

func osArchInit() {}

//go:nosplit
func cputicks() int64 {

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

//go:build arm64

package runtime

import "internal/cpu"

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

func osArchInit() {}

//go:nosplit
func cputicks() int64 {

// 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() {
	// Check if the present z-system has the hardware capability to carryout

// Copyright 2016 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 linux && (mips || mipsle)

package runtime

func archauxv(tag, val uintptr) {
}

func osArchInit() {}

//go:nosplit
func cputicks() int64 {
	// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
	return nanotime()
}

const (

	if getncpu() > 1 && goarm < 7 {
		print("runtime: this system has multiple CPUs and must use\n")
		print("atomic synchronization instructions. Recompile using GOARM=7.\n")
		exit(1)
	}
}

func archauxv(tag, val uintptr) {
	switch tag {
	case _AT_HWCAP:
		cpu.HWCap = uint(val)
	case _AT_HWCAP2:
		cpu.HWCap2 = uint(val)
	case _AT_PLATFORM:
		cpu.Platform = gostringnocopy((*byte)(unsafe.Pointer(val)))
	}
}

		print("a binary compiled for VFPv3 hard floating point. Recompile adding ,softfloat\n")
		print("to GOARM or changing GOARM to 6.\n")
		exit(1)
	}
}

func archauxv(tag, val uintptr) {
	switch tag {
	case _AT_HWCAP:
		cpu.HWCap = uint(val)
	case _AT_HWCAP2:
		cpu.HWCap2 = uint(val)
	case _AT_PLATFORM:
		cpu.Platform = gostringnocopy((*byte)(unsafe.Pointer(val)))
	}
}

// license that can be found in the LICENSE file.

package cpu

const CacheLinePadSize = 32

// arm doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2.
// These are initialized by archauxv() and should not be changed after they are
// initialized.
var HWCap uint
var HWCap2 uint
var Platform string

// HWCAP/HWCAP2 bits. These are exposed by Linux and FreeBSD.
const (
	hwcap_VFPv4 = 1 << 16

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

//go:build arm64 && linux

package cpu

import _ "unsafe" // for linkname

// HWCap may be initialized by archauxv and
// should not be changed after it was initialized.
//
// Other widely used packages
// access HWCap using linkname as well, most notably:
//   - github.com/klauspost/cpuid/v2
//

		// _AT_NCPUS from auxv shouldn't be used due to golang.org/issue/15206
		case _AT_PAGESZ:
			physPageSize = val
		case _AT_TIMEKEEP:
			timekeepSharedPage = (*vdsoTimekeep)(unsafe.Pointer(val))
		}

		archauxv(tag, val)
	}
	return i / 2
}

// sysSigaction calls the sigaction system call.
//
//go:nosplit
func sysSigaction(sig uint32, new, old *sigactiont) {

			// worth of random data.
			startupRand = (*[16]byte)(unsafe.Pointer(val))[:]

		case _AT_PAGESZ:
			physPageSize = val

		case _AT_SECURE:
			secureMode = val == 1
		}

		archauxv(tag, val)
		vdsoauxv(tag, val)
	}
	return i / 2
}

var sysTHPSizePath = []byte("/sys/kernel/mm/transparent_hugepage/hpage_pmd_size\x00")

func getHugePageSize() uintptr {
	var numbuf [20]byte