"IAW": arm.C_WBIT | arm.C_UBIT,
	"DBW": arm.C_WBIT | arm.C_PBIT,
	"DAW": arm.C_WBIT,
	"IB":  arm.C_PBIT | arm.C_UBIT,
	"IA":  arm.C_UBIT,
	"DB":  arm.C_PBIT,
	"DA":  0,
}

var armJump = map[string]bool{
	"B":    true,
	"BL":   true,
	"BX":   true,
	"BEQ":  true,
	"BNE":  true,
	"BCS":  true,
	"BHS":  true,
	"BCC":  true,
	"BLO":  true,
	"BMI":  true,
	"BPL":  true,

		Ctxt: p.ctxt,
		As:   obj.AFUNCDATA,
		Pos:  p.pos(),
		From: valueAddr,
		To:   nameAddr,
	}
	p.append(prog, "", true)
}

// asmJump assembles a jump instruction.
// JMP	R1
// JMP	exit
// JMP	3(PC)
func (p *Parser) asmJump(op obj.As, cond string, a []obj.Addr) {
	var target *obj.Addr
	prog := &obj.Prog{
		Ctxt: p.ctxt,
		Pos:  p.pos(),
		As:   op,
	}
	targetAddr := &prog.To

		addr := p.address(op)
		if !p.isJump && addr.Reg < 0 { // Jumps refer to PC, a pseudo.
			p.errorf("illegal use of pseudo-register in %s", word)
		}
		p.addr = append(p.addr, addr)
	}
	if p.isJump {
		p.asmJump(op, cond, p.addr)
		return
	}
	p.asmInstruction(op, cond, p.addr)
}

func (p *Parser) pseudo(word string, operands [][]lex.Token) bool {
	switch word {
	case "DATA":
		p.asmData(operands)