BC 20,undefined_symbol,LR       // BC $20,CR0LT,LR // 4e800020
	BC 20,undefined_symbol+1,LR     // BC $20,CR0GT,LR // 4e810020
	JMP LR                          // 4e800020
	BR LR                           // JMP LR // 4e800020
	BCL $20,CR0LT,$1,LR             // 4e800821
	BCL $20,CR0LT,$0,LR             // 4e800021
	BCL $20,CR0LT,LR                // 4e800021

	a generic function:
	<br>
	Each pair <code>(a<sub>i</sub>, p<sub>i</sub>)</code> of corresponding
	function arguments and parameters where <code>a<sub>i</sub></code> is not an
	<a href="#Constants">untyped constant</a> yields an equation
	<code>typeof(p<sub>i</sub>) ≡<sub>A</sub> typeof(a<sub>i</sub>)</code>.
	<br>

		} else {
			p.branch(targetAddr, targetProg)
		}
	case target.Type == obj.TYPE_MEM && target.Name == obj.NAME_NONE:
		// JMP 4(R0)
		*targetAddr = *target
		// On the ppc64, 9a encodes BR (CTR) as BR CTR. We do the same.
		if p.arch.Family == sys.PPC64 && target.Offset == 0 {
			targetAddr.Type = obj.TYPE_REG
		}
	case target.Type == obj.TYPE_CONST:
		// JMP $4
		*targetAddr = a[0]