}

    protected void assertConf(String name, String desc, boolean visible, String[] exts) {
        def conf = metadata.configurationDefinitions[name]
        assert conf != null : "configuration not found: " + name
        assert conf.name == name
        assert conf.visible == visible
        assert conf.extendsFrom as Set == exts as Set
    }

	EOR $-2287828610704211969, R27, R22        // 76e343d2
	EORW R12->27, R10, R19                     // 536d8c4a
	EOR R2<<59, R30, R17                       // d1ef02ca
	ERET                                       // e0039fd6
	EXTRW $7, R8, R10, R25                     // 591d8813
	EXTR $35, R22, R12, R8                     // 888dd693
	SEVL                                       // bf2003d5
	HINT $6                                    // df2003d5

	ACMPWU
	ACMPB
	AFTDIV
	AFTSQRT
	ADIVD
	ADIVDCC
	ADIVDE
	ADIVDECC
	ADIVDEU
	ADIVDEUCC
	ADIVDVCC
	ADIVDV
	ADIVDU
	ADIVDUCC
	ADIVDUVCC
	ADIVDUV
	AEXTSW
	AEXTSWCC
	/* AFCFIW; AFCFIWCC */
	AFCFID
	AFCFIDCC
	AFCFIDU
	AFCFIDUCC
	AFCFIDS
	AFCFIDSCC
	AFCTID
	AFCTIDCC
	AFCTIDZ
	AFCTIDZCC
	ALDAR
	AMOVD
	AMOVDU
	AMOVWZ

		case AEXTSB: /* op Rs, Ra */
			opset(AEXTSBCC, r0)

			opset(AEXTSH, r0)
			opset(AEXTSHCC, r0)
			opset(ACNTLZW, r0)
			opset(ACNTLZWCC, r0)
			opset(ACNTLZD, r0)
			opset(AEXTSW, r0)
			opset(AEXTSWCC, r0)
			opset(ACNTLZDCC, r0)

		case AFABS: /* fop [s,]d */
			opset(AFABSCC, r0)

			opset(AFNABS, r0)
			opset(AFNABSCC, r0)
			opset(AFNEG, r0)

		{name: "EXTRconst", argLength: 2, reg: gp21, asm: "EXTR", aux: "Int64"},   // extract 64 bits from arg0:arg1 starting at lsb auxInt, auxInt should be in the range 0 to 63.
		{name: "EXTRWconst", argLength: 2, reg: gp21, asm: "EXTRW", aux: "Int64"}, // extract 32 bits from arg0[31:0]:arg1[31:0] starting at lsb auxInt and zero top 32 bits, auxInt should be in the range 0 to 31.

		// comparisons