}
	}
	return
}

func Write(fd int, p []byte) (n int, err error) {
	if raceenabled {
		raceReleaseMerge(unsafe.Pointer(&ioSync))
	}
	n, err = write(fd, p)
	if raceenabled && n > 0 {
		raceReadRange(unsafe.Pointer(&p[0]), n)
	}
	return
}

func Pread(fd int, p []byte, offset int64) (n int, err error) {
	n, err = pread(fd, p, offset)
	if raceenabled {
		if n > 0 {

func getcallerpc() uintptr
func getcallersp() uintptr

// race detection
func racefuncenter(uintptr)
func racefuncexit()
func raceread(uintptr)
func racewrite(uintptr)
func racereadrange(addr, size uintptr)
func racewriterange(addr, size uintptr)

// memory sanitizer
func msanread(addr, size uintptr)
func msanwrite(addr, size uintptr)
func msanmove(dst, src, size uintptr)

	LMG	addr+0(FP), R3, R4
	MOVD	R14, R5
	JMP	racecalladdr<>(SB)

// func runtime·RaceReadRange(addr, size uintptr)
TEXT	runtime·RaceReadRange(SB), NOSPLIT, $0-16
	// This needs to be a tail call, because racereadrange reads caller pc.
	JMP	runtime·racereadrange(SB)

// func runtime·racereadrangepc1(void *addr, uintptr sz, void *pc)
TEXT	runtime·racereadrangepc1(SB), NOSPLIT, $0-24

	MOVQ	$__tsan_read_range(SB), AX
	JMP	racecalladdr<>(SB)

// func runtime·RaceReadRange(addr, size uintptr)
TEXT	runtime·RaceReadRange(SB), NOSPLIT, $0-16
	// This needs to be a tail call, because racereadrange reads caller pc.
	JMP	runtime·racereadrange(SB)

// void runtime·racereadrangepc1(void *addr, uintptr sz, void *pc)
TEXT	runtime·racereadrangepc1(SB), NOSPLIT, $0-24
	MOVQ	addr+0(FP), RARG1

	{"getcallerpc", funcTag, 143},
	{"getcallersp", funcTag, 143},
	{"racefuncenter", funcTag, 31},
	{"racefuncexit", funcTag, 9},
	{"raceread", funcTag, 31},
	{"racewrite", funcTag, 31},
	{"racereadrange", funcTag, 144},
	{"racewriterange", funcTag, 144},
	{"msanread", funcTag, 144},
	{"msanwrite", funcTag, 144},
	{"msanmove", funcTag, 145},
	{"asanread", funcTag, 144},
	{"asanwrite", funcTag, 144},

	MOVD	$__tsan_read_range(SB), R9
	JMP	racecalladdr<>(SB)

// func runtime·RaceReadRange(addr, size uintptr)
TEXT	runtime·RaceReadRange(SB), NOSPLIT, $0-16
	// This needs to be a tail call, because racereadrange reads caller pc.
	JMP	runtime·racereadrange(SB)

// func runtime·racereadrangepc1(void *addr, uintptr sz, void *pc)
TEXT	runtime·racereadrangepc1(SB), NOSPLIT, $0-24
	MOVD	addr+0(FP), R1
	MOVD	size+8(FP), R2

	if !raceenabled {
		return
	}
	for i := 0; n > 0 && i < len(iovecs); i++ {
		m := int(iovecs[i].Len)
		if m > n {
			m = n
		}
		n -= m
		if m > 0 {
			raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
		}
	}
}

// mmap varies by architecture; see syscall_linux_*.go.
//sys	munmap(addr uintptr, length uintptr) (err error)

	if raceenabled {
		raceReleaseMerge(unsafe.Pointer(&ioSync))
	}
	err := writeFile(fd, p, done, overlapped)
	if raceenabled && *done > 0 {
		raceReadRange(unsafe.Pointer(&p[0]), int(*done))
	}
	return err
}

var ioSync int64

func Seek(fd Handle, offset int64, whence int) (newoffset int64, err error) {
	var w uint32
	switch whence {
	case 0:

	}
	return
}

func Write(fd int, p []byte) (n int, err error) {
	if raceenabled {
		raceReleaseMerge(unsafe.Pointer(&ioSync))
	}
	n, err = write(fd, p)
	if raceenabled && n > 0 {
		raceReadRange(unsafe.Pointer(&p[0]), n)
	}
	return
}

// For testing: clients can set this flag to force
// creation of IPv6 sockets to return EAFNOSUPPORT.
var SocketDisableIPv6 bool

	ir.Syms.Racefuncexit = typecheck.LookupRuntimeFunc("racefuncexit")
	ir.Syms.Raceread = typecheck.LookupRuntimeFunc("raceread")
	ir.Syms.Racereadrange = typecheck.LookupRuntimeFunc("racereadrange")
	ir.Syms.Racewrite = typecheck.LookupRuntimeFunc("racewrite")
	ir.Syms.Racewriterange = typecheck.LookupRuntimeFunc("racewriterange")
	ir.Syms.TypeAssert = typecheck.LookupRuntimeFunc("typeAssert")