case "PC":
		if prefix != 0 {
			p.errorf("illegal addressing mode for PC")
		}
		addr.Type = obj.TYPE_BRANCH // We set the type and leave NAME untouched. See asmJump.
	case "SB":
		addr.Name = obj.NAME_EXTERN
		if isStatic {
			addr.Name = obj.NAME_STATIC
		}
	case "SP":
		addr.Name = obj.NAME_AUTO // The pseudo-stack.
	default:
		p.errorf("expected pseudo-register; found %s", reg)
	}
	if prefix == '$' {