//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 {
	// nanotime() is a poor approximation of CPU ticks that is enough for the profiler.
	return nanotime()

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

package runtime

func checkgoarm() {
	return // TODO(minux)
}

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

// Copyright 2018 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.

package runtime

import "unsafe"

//go:nosplit
func cputicks() int64 {
	var counter int64
	stdcall1(_QueryPerformanceCounter, uintptr(unsafe.Pointer(&counter)))
	return counter
}

func checkgoarm() {
	if goarm < 7 {

	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)
	}
}

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

	mc.__gregs[_REG_X0] = uint64(uintptr(unsafe.Pointer(mp)))
	mc.__gregs[_REG_X1] = uint64(uintptr(unsafe.Pointer(mp.g0)))
	mc.__gregs[_REG_X2] = uint64(fn)
}

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

	_HPET_MAIN_COUNTER = 0xf0 /* Main counter register */

	hpetDevPath = "/dev/hpetX\x00"
)

var hpetDevMap [_HPET_DEV_MAP_MAX]uintptr

//go:nosplit
func (th *vdsoTimehands) getTSCTimecounter() uint32 {
	tsc := cputicks()
	if th.x86_shift > 0 {
		tsc >>= th.x86_shift
	}
	return uint32(tsc)
}

//go:nosplit
func (th *vdsoTimehands) getHPETTimecounter() (uint32, bool) {
	idx := int(th.x86_hpet_idx)

// 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 (
	_SS_DISABLE  = 2
	_NSIG        = 128 + 1
	_SIG_BLOCK   = 1
	_SIG_UNBLOCK = 2

	case _AT_HWCAP:
		cpu.HWCap = uint(val)
	case _AT_HWCAP2:
		cpu.HWCap2 = uint(val)
	case _AT_PLATFORM:
		cpu.Platform = gostringnocopy((*byte)(unsafe.Pointer(val)))
	}
}

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

		cpu.HWCap = uint(val)
	case _AT_HWCAP2:
		cpu.HWCap2 = uint(val)
	case _AT_PLATFORM:
		cpu.Platform = gostringnocopy((*byte)(unsafe.Pointer(val)))
	}
}

func osArchInit() {}

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

	throw("too many writes on closed pipe")
}

//go:linkname syscall_now syscall.now
func syscall_now() (sec int64, nsec int32) {
	sec, nsec, _ = time_now()
	return
}

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

// gsignalStack is unused on js.
type gsignalStack struct{}