}

	case objabi.R_CALLARM64:
		var t int64
		if ldr.SymType(rs) == sym.SDYNIMPORT {
			t = (ldr.SymAddr(syms.PLT) + r.Add()) - (ldr.SymValue(s) + int64(r.Off()))
		} else {
			t = (ldr.SymAddr(rs) + r.Add()) - (ldr.SymValue(s) + int64(r.Off()))
		}
		if t >= 1<<27 || t < -1<<27 {
			ldr.Errorf(s, "program too large, call relocation distance = %d", t)
		}

// A SymEffect describes the effect that an SSA Value has on the variable
// identified by the symbol in its Aux field.
type SymEffect int8

const (
	SymRead SymEffect = 1 << iota
	SymWrite
	SymAddr

	SymRdWr = SymRead | SymWrite

	SymNone SymEffect = 0
)

// A Sym represents a symbolic offset from a base register.
// Currently a Sym can be one of 3 things:

				symtab.AddUint8(0)
			} else {
				symtab.AddUint8(uint8(ldr.SymSect(o).Extnum))
			}
			symtab.AddUint16(ctxt.Arch, 0) // desc
			symtab.AddUintXX(ctxt.Arch, uint64(ldr.SymAddr(s)), ctxt.Arch.PtrSize)
		}
	}
}

func machodysymtab(ctxt *Link, base int64) {
	ml := newMachoLoad(ctxt.Arch, LC_DYSYMTAB, 18)

	n := 0

	// This also prevents a variable from "coming back from the dead" and presenting
	// stale pointers to the garbage collector. See issue 28445.
	if e&(ssa.SymRead|ssa.SymAddr) != 0 {
		effect |= uevar
	}
	if e&ssa.SymWrite != 0 {
		if !isfat(n.Type()) || v.Op == ssa.OpVarDef {
			effect |= varkill
		} else if lv.conservativeWrites {
			effect |= uevar
		}
	}

var destPortDispatchRegexp = regexp.MustCompile(`^meta l4proto \. th dport vmap @(\S+)$`)

var sourceAddrRegexp = regexp.MustCompile(`^ip6* saddr (!= )?(\S+)`)
var sourceAddrLookupRegexp = regexp.MustCompile(`^ip6* saddr (!= )?\{([^}]*)\}`)
var sourceAddrLocalRegexp = regexp.MustCompile(`^fib saddr type local`)

var endpointVMAPRegexp = regexp.MustCompile(`^numgen random mod \d+ vmap \{(.*)\}$`)

	SYS_SHMAT                  = 228 // { caddr_t shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMCTL                 = 229 // { int shmctl(int shmid, int cmd, struct shmid_ds *buf); }
	SYS_SHMDT                  = 230 // { int shmdt(const void *shmaddr); }
	SYS_SHMGET                 = 231 // { int shmget(key_t key, size_t size, int shmflg); }

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, \
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, \
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, \
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, \

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, \
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, \
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, \
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, \

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg); }
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, int inherit); }
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, u_int nfds, int timeout); }

	SYS_MSGRCV         = 227 // { int sys_msgrcv(int msqid, void *msgp, size_t msgsz, long msgtyp, int msgflg); }
	SYS_SHMAT          = 228 // { void *sys_shmat(int shmid, const void *shmaddr, int shmflg); }
	SYS_SHMDT          = 230 // { int sys_shmdt(const void *shmaddr); }
	SYS_MINHERIT       = 250 // { int sys_minherit(void *addr, size_t len, int inherit); }
	SYS_POLL           = 252 // { int sys_poll(struct pollfd *fds, u_int nfds, int timeout); }