func SliceCapWithSize(size, c uint64) int {
	if int64(c) < 0 || c != uint64(int(c)) {
		return -1
	}
	if size > 0 && c > (1<<64-1)/size {
		return -1
	}
	if c*size > chunk {
		c = chunk / size
		if c == 0 {
			c = 1
		}
	}
	return int(c)
}

// SliceCap is like SliceCapWithSize but using generics.
func SliceCap[E any](c uint64) int {
	var v E

	r.off += 4
	return rv
}

func (r *Reader) ReadUint64() uint64 {
	end := int(r.off) + 8
	rv := binary.LittleEndian.Uint64(r.b[int(r.off):end:end])
	r.off += 8
	return rv
}

func (r *Reader) ReadULEB128() (value uint64) {
	var shift uint

	for {
		b := r.b[r.off]
		r.off++
		value |= (uint64(b&0x7F) << shift)
		if b&0x80 == 0 {
			break
		}
		shift += 7
	}
	return

func (c *sigctxt) rbp() uint64 { return uint64(c.regs().gregs[_REG_RBP]) }
func (c *sigctxt) rsp() uint64 { return uint64(c.regs().gregs[_REG_RSP]) }
func (c *sigctxt) r8() uint64  { return uint64(c.regs().gregs[_REG_R8]) }
func (c *sigctxt) r9() uint64  { return uint64(c.regs().gregs[_REG_R9]) }
func (c *sigctxt) r10() uint64 { return uint64(c.regs().gregs[_REG_R10]) }
func (c *sigctxt) r11() uint64 { return uint64(c.regs().gregs[_REG_R11]) }

}

func (r *PtraceRegs) PC() uint64 { return r.Era }

func (r *PtraceRegs) SetPC(era uint64) { r.Era = era }

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

func (msghdr *Msghdr) SetControllen(length int) {
	msghdr.Controllen = uint64(length)
}

func (msghdr *Msghdr) SetIovlen(length int) {
	msghdr.Iovlen = uint64(length)
}

	"unsafe"
)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

//sys	pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
//sys	pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
//sys	Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
//sys	Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64

func Fadvise(fd int, offset int64, length int64, advice int) (err error) {

	return errno
}

func (r *PtraceRegs) PC() uint64 { return r.Pc }

func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

func (msghdr *Msghdr) SetControllen(length int) {
	msghdr.Controllen = uint64(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = uint64(length)
}

func InotifyInit() (fd int, err error) {

				"")
			added = true
		}
		addr += memRegionSize
	}
}

func read64(p *[8]byte) uint64 {
	// all supported darwin platforms are little endian
	return uint64(p[0]) | uint64(p[1])<<8 | uint64(p[2])<<16 | uint64(p[3])<<24 | uint64(p[4])<<32 | uint64(p[5])<<40 | uint64(p[6])<<48 | uint64(p[7])<<56
}

func regionFilename(address uint64) string {
	buf := make([]byte, _MAXPATHLEN)
	r := proc_regionfilename(
		os.Getpid(),
		address,

	return errno
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func (r *PtraceRegs) PC() uint64 { return r.Rip }

func (r *PtraceRegs) SetPC(pc uint64) { r.Rip = pc }

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

		shouldPanic("len out of range", func() { _ = append(t, make(T, int64(n))...) })
		shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, int64(n))...) })
		shouldPanic("len out of range", func() { _ = append(t, make(T, uint64(n))...) })
		shouldPanic("cap out of range", func() { _ = append(t, make(T, 0, uint64(n))...) })
		shouldPanic("len out of range", func() { _ = append(t, make(T, int(n))...) })