rs := r.Sym()
	if target.IsAIX() {
		ldr.Errorf(s, "archrelocaddr called for %s relocation\n", ldr.SymName(rs))
	}
	o1, o2 := unpackInstPair(target, val)

	// Verify resulting address fits within a 31 bit (2GB) address space.
	// This is a restriction arising  from the usage of lis (HA) + d-form
	// (LO) instruction sequences used to implement absolute relocations
	// on PPC64 prior to ISA 3.1 (P10). For consistency, maintain this

	// exceed Go's 48 bit limit, it's extremely unlikely in
	// practice.
	//
	// On 32-bit platforms, we accept the full 32-bit address
	// space because doing so is cheap.
	// mips32 only has access to the low 2GB of virtual memory, so
	// we further limit it to 31 bits.
	//
	// On ios/arm64, although 64-bit pointers are presumably
	// available, pointers are truncated to 33 bits in iOS <14.