AT:        "AT",
	B:         "B",
	BFI:       "BFI",
	BFM:       "BFM",
	BFXIL:     "BFXIL",
	BIC:       "BIC",
	BICS:      "BICS",
	BIF:       "BIF",
	BIT:       "BIT",
	BL:        "BL",
	BLR:       "BLR",
	BR:        "BR",
	BRK:       "BRK",
	BSL:       "BSL",
	CBNZ:      "CBNZ",
	CBZ:       "CBZ",
	CCMN:      "CCMN",
	CCMP:      "CCMP",
	CINC:      "CINC",
	CINV:      "CINV",

{"Name":"BL","Bits":"1|0|0|1|0|1|imm26:26","Arch":"26-bit signed PC-relative branch offset variant","Syntax":"BL <label>","Code":"","Alias":""},
{"Name":"BLR","Bits":"1|1|0|1|0|1|1|0|0|0|1|1|1|1|1|1|0|0|0|0|0|0|Rn:5|0|0|0|0|0","Arch":"Integer variant","Syntax":"BLR <Xn>","Code":"","Alias":""},
{"Name":"BR","Bits":"1|1|0|1|0|1|1|0|0|0|0|1|1|1|1|1|0|0|0|0|0|0|Rn:5|0|0|0|0|0","Arch":"Integer variant","Syntax":"BR <Xn>","Code":"","Alias":""},

	{as: ABR, a6: C_BRAPIC, type_: 11, size: 8},                                      // b label; nop
	{as: ABR, a6: C_LR, type_: 18, size: 4},                                          // blr
	{as: ABR, a6: C_CTR, type_: 18, size: 4},                                         // bctr
	{as: ABC, a1: C_U15CON, a2: C_CRBIT, a6: C_BRA, type_: 16, size: 4},              // bc bo, bi, label

		return 1<<31 | 5<<26
	}

	c.ctxt.Diag("%v: bad bra %v", p, a)
	return 0
}

func (c *ctxt7) opbrr(p *obj.Prog, a obj.As) uint32 {
	switch a {
	case ABL:
		return OPBLR(1) /* BLR */

	case AB:
		return OPBLR(0) /* BR */

	case obj.ARET:
		return OPBLR(2) /* RET */
	}

	c.ctxt.Diag("%v: bad brr %v", p, a)
	return 0
}