// Copyright 2009 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-GO file.

//go:build (freebsd && amd64) || (freebsd && arm64)
// +build freebsd,amd64 freebsd,arm64

package memory

import (
	"syscall"
)

// https://cs.opensource.google/go/go/+/refs/tags/go1.17.8:src/syscall/zsyscall_freebsd_amd64.go;l=1337-1346
func mmapSyscall(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) {
	r0, _, e1 := syscall.Syscall6(syscall.SYS_MMAP, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flag), uintptr(fd), uintptr(pos))
	ret = uintptr(r0)
	if e1 != 0 {
		err = e1
	}
	return
}