mmap   func(addr, length uintptr, prot, flags, fd int, offset int64) (uintptr, error)
	munmap func(addr uintptr, length uintptr) error
}

func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
	if length <= 0 {
		return nil, EINVAL
	}

	// Map the requested memory.
	addr, errno := m.mmap(0, uintptr(length), prot, flags, fd, offset)

	}
	return proxyURL, nil
}

// useProxy reports whether requests to addr should use a proxy,
// according to the NO_PROXY or no_proxy environment variable.
// addr is always a canonicalAddr with a host and port.
func (cfg *config) useProxy(addr string) bool {
	if len(addr) == 0 {
		return true
	}
	host, port, err := net.SplitHostPort(addr)
	if err != nil {
		return false
	}
	if host == "localhost" {

			}
			t.Parallel()

			ln := newLocalListener(t, network)
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(ln.Addr().String())
			}
			defer ln.Close()

			c, err := Dial(ln.Addr().Network(), ln.Addr().String())
			if err != nil {
				t.Fatal(err)
			}
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(c.LocalAddr().String())
			}

	SYS_MUNMAP         = 73  // { int sys_munmap(void *addr, size_t len); }
	SYS_MPROTECT       = 74  // { int sys_mprotect(void *addr, size_t len, \
	SYS_MADVISE        = 75  // { int sys_madvise(void *addr, size_t len, \
	SYS_UTIMES         = 76  // { int sys_utimes(const char *path, \
	SYS_FUTIMES        = 77  // { int sys_futimes(int fd, \
	SYS_MQUERY         = 78  // { void *sys_mquery(void *addr, size_t len, int prot, \

	return ptracePeek(PTRACE_PEEKDATA, pid, addr, out)
}

func ptracePoke(pokeReq int, peekReq int, pid int, addr uintptr, data []byte) (count int, err error) {
	// As for ptracePeek, we need to align our accesses to deal
	// with the possibility of straddling an invalid page.

	// Leading edge.
	n := 0
	if addr%sizeofPtr != 0 {
		var buf [sizeofPtr]byte
		err = ptracePtr(peekReq, pid, addr-addr%sizeofPtr, unsafe.Pointer(&buf[0]))

		defer cancel()
	}

	rawConn, err := netDialer.DialContext(ctx, network, addr)
	if err != nil {
		return nil, err
	}

	colonPos := strings.LastIndex(addr, ":")
	if colonPos == -1 {
		colonPos = len(addr)
	}
	hostname := addr[:colonPos]

	if config == nil {
		config = defaultConfig()
	}
	// If no ServerName is set, infer the ServerName

					// value to keep things simple.
					used.Add(n)
					changed = true
				}
			}
		}
		if node == nil {
			return
		}
		if addr[v] == nil {
			// The address of an auto reaches this op.
			addr[v] = node
			changed = true
			return
		}
		if addr[v] != node {
			// This doesn't happen in practice, but catch it just in case.
			used.Add(node)
			changed = true
		}
		return
	}

	SYS_MUNMAP         = 73  // { int sys_munmap(void *addr, size_t len); }
	SYS_MPROTECT       = 74  // { int sys_mprotect(void *addr, size_t len, \
	SYS_MADVISE        = 75  // { int sys_madvise(void *addr, size_t len, \
	SYS_UTIMES         = 76  // { int sys_utimes(const char *path, \
	SYS_FUTIMES        = 77  // { int sys_futimes(int fd, \
	SYS_MINCORE        = 78  // { int sys_mincore(void *addr, size_t len, \

	p.addr = p.addr[0:0]
	p.isJump = p.arch.IsJump(word)
	for _, op := range operands {
		addr := p.address(op)
		if !p.isJump && addr.Reg < 0 { // Jumps refer to PC, a pseudo.
			p.errorf("illegal use of pseudo-register in %s", word)
		}
		p.addr = append(p.addr, addr)
	}
	if p.isJump {
		p.asmJump(op, cond, p.addr)
		return
	}
	p.asmInstruction(op, cond, p.addr)

				return err
			}

			if ri.Addr&(1<<31) != 0 { // scattered
				rel.Addr = ri.Addr & (1<<24 - 1)
				rel.Type = uint8((ri.Addr >> 24) & (1<<4 - 1))
				rel.Len = uint8((ri.Addr >> 28) & (1<<2 - 1))
				rel.Pcrel = ri.Addr&(1<<30) != 0
				rel.Value = ri.Symnum
				rel.Scattered = true
			} else {
				switch bo {
				case binary.LittleEndian:
					rel.Addr = ri.Addr
					rel.Value = ri.Symnum & (1<<24 - 1)