pkg syscall (windows-386), func SyscallN(uintptr, ...uintptr) (uintptr, uintptr, Errno)
pkg syscall (windows-amd64), func Syscall //deprecated
pkg syscall (windows-amd64), func Syscall12 //deprecated
pkg syscall (windows-amd64), func Syscall15 //deprecated
pkg syscall (windows-amd64), func Syscall18 //deprecated
pkg syscall (windows-amd64), func Syscall6 //deprecated
pkg syscall (windows-amd64), func Syscall9 //deprecated

	if err != nil {
		return n, err
	}

	return n, nil
}

// Implemented in the runtime package (runtime/sys_darwin.go)
func syscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func rawSyscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)

// Note that sometimes we use a lowercase //sys name and
// wrap it in our own nicer implementation.

package syscall

import (
	"unsafe"
)

func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)

//go:nosplit
func osyield_no_g() {
	osyield()
}

func pipe2(flags int32) (r, w int32, errno int32)

//go:nosplit
func fcntl(fd, cmd, arg int32) (ret int32, errno int32) {
	r, _, err := syscall.Syscall6(syscall.SYS_FCNTL, uintptr(fd), uintptr(cmd), uintptr(arg), 0, 0, 0)
	return int32(r), int32(err)
}

const (
	_si_max_size    = 128
	_sigev_max_size = 64
)

//go:nosplit
//go:nowritebarrierrec

# let it know that a system call is running.
#
# * syscall_${GOOS}.go
#
# This hand-written Go file implements system calls that need
# special handling and lists "//sys" comments giving prototypes
# for ones that can be auto-generated.  Mksyscall reads those
# comments to generate the stubs.
#
# * syscall_${GOOS}_${GOARCH}.go
#
# Same as syscall_${GOOS}.go except that it contains code specific

// Note that sometimes we use a lowercase //sys name and
// wrap it in our own nicer implementation.

package syscall

import (
	"internal/itoa"
	runtimesyscall "internal/runtime/syscall"
	"runtime"
	"unsafe"
)

// Pull in entersyscall/exitsyscall for Syscall/Syscall6.
//
// Note that this can't be a push linkname because the runtime already has a

//go:nosplit
func syscall_Syscall(fn, nargs, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
	args := [...]uintptr{a1, a2, a3}
	return syscall_SyscallN(fn, args[:nargs]...)
}

//go:linkname syscall_Syscall6 syscall.Syscall6
//go:nosplit
func syscall_Syscall6(fn, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
	args := [...]uintptr{a1, a2, a3, a4, a5, a6}
	return syscall_SyscallN(fn, args[:nargs]...)
}

// it in our own nicer implementation, either here or in
// syscall_solaris.go or syscall_unix.go.

package syscall

import "unsafe"

const _F_DUP2FD_CLOEXEC = F_DUP2FD_CLOEXEC

func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)

		return p
	}
	r, _, err := d.Proc("CreateThread").Call(0, 0, syscall.NewCallback(f), 123, 0, 0)
	if r == 0 {
		t.Fatalf("CreateThread failed: %v", err)
	}
	h := syscall.Handle(r)
	defer syscall.CloseHandle(h)

	switch s, err := syscall.WaitForSingleObject(h, syscall.INFINITE); s {
	case syscall.WAIT_OBJECT_0:
		break
	case syscall.WAIT_FAILED:
		t.Fatalf("WaitForSingleObject failed: %v", err)
	default:

// This file is called cgo_unix.go, but to allow syscalls-to-libc-based
// implementations to share the code, it does not use cgo directly.
// Instead of C.foo it uses _C_foo, which is defined in either
// cgo_unix_cgo.go or cgo_unix_syscall.go

//go:build !netgo && ((cgo && unix) || darwin)

package net

import (
	"context"
	"errors"
	"internal/bytealg"
	"net/netip"
	"syscall"
	"unsafe"