{"DATA", "·D(SB)/5,$0.0", "bad float size for DATA argument: 5"},
		{"DATA", "·E(SB)/4,$·A(SB)", "bad addr size for DATA argument: 4"},
		{"DATA", "·F(SB)/8,$·A(SB)", ""},
		{"DATA", "·G(SB)/5,$\"abcde\"", ""},
		{"GLOBL", "", "expect two or three operands for GLOBL"},
		{"GLOBL", "0,1", "GLOBL symbol \"<erroneous symbol>\" must be a symbol(SB)"},
		{"GLOBL", "@B(SB), 0", "expected '(', found B"}, // Issue 23580.

	switch op {
	case arm.AMULA, arm.AMULS, arm.AMMULA, arm.AMMULS, arm.AMULABB, arm.AMULAWB, arm.AMULAWT:
		return true
	}
	return false
}

var bcode = []obj.As{
	arm.ABEQ,
	arm.ABNE,
	arm.ABCS,
	arm.ABCC,
	arm.ABMI,
	arm.ABPL,
	arm.ABVS,
	arm.ABVC,
	arm.ABHI,
	arm.ABLS,
	arm.ABGE,
	arm.ABLT,
	arm.ABGT,
	arm.ABLE,
	arm.AB,
	obj.ANOP,
}

	DIVD.EQ	F3, F4, F5    // 035b840e
	DIVF.NE	F0, F2        // 002a821e
	DIVD	F3, F5        // 035b85ee
	NEGF	F0, F1        // 401ab1ee
	NEGD	F4, F5        // 445bb1ee
	ABSF	F0, F1        // c01ab0ee
	ABSD	F4, F5        // c45bb0ee
	SQRTF	F0, F1        // c01ab1ee
	SQRTD	F4, F5        // c45bb1ee
	MOVFD	F0, F1        // c01ab7ee
	MOVDF	F4, F5        // c45bb7ee

	LDREX	(R8), R9      // 9f9f98e1

		t.Errorf("behavior differs: with = %#v; without: %#v", with, withOut)
	}
}

// tests that Len is affected by reads, but Size is not.
func TestReaderLenSize(t *testing.T) {
	r := NewReader([]byte("abc"))
	io.CopyN(io.Discard, r, 1)
	if r.Len() != 2 {
		t.Errorf("Len = %d; want 2", r.Len())
	}
	if r.Size() != 3 {
		t.Errorf("Size = %d; want 3", r.Size())
	}
}

func TestReaderReset(t *testing.T) {

	a, b []byte
	i    int
}{
	{[]byte(""), []byte(""), 0},
	{[]byte("a"), []byte(""), 1},
	{[]byte(""), []byte("a"), -1},
	{[]byte("abc"), []byte("abc"), 0},
	{[]byte("abd"), []byte("abc"), 1},
	{[]byte("abc"), []byte("abd"), -1},
	{[]byte("ab"), []byte("abc"), -1},
	{[]byte("abc"), []byte("ab"), 1},
	{[]byte("x"), []byte("ab"), 1},
	{[]byte("ab"), []byte("x"), -1},
	{[]byte("x"), []byte("a"), 1},

	// Write text to the filter one character at a time.
	var out strings.Builder
	f, exitStr := newExitCodeFilter(&out)
	// Embed a "fake" exit code in the middle to check that we don't get caught on it.
	pre := "abc" + exitStr + "123def"
	text := pre + exitStr + `1`
	for i := 0; i < len(text); i++ {
		_, err := f.Write([]byte{text[i]})
		if err != nil {
			t.Fatal(err)
		}
	}

//
//	LBRA rel
label4:
	BFPT	1(PC)
	BFPT	label4	// BFPT 87


	//
	// floating point operate
	//
	//	LFCONV freg ',' freg
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	ABSD	F1, F2

	//	LFADD freg ',' freg
	//	{
	//		outcode(int($1), &$2, 0, &$4);
	//	}
	ADDD	F1, F2

	//	LFADD freg ',' freg ',' freg
	//	{
	//		outcode(int($1), &$2, int($4.Reg), &$6);
	//	}

	MOVDF	F4, F5			// 85181901
	MOVWF	F4, F5			// 85101d01
	MOVFW	F4, F5			// 85041b01
	MOVWD	F4, F5			// 85201d01
	MOVDW	F4, F5			// 85081b01
	NEGF	F4, F5			// 85141401
	NEGD	F4, F5			// 85181401
	ABSD	F4, F5			// 85081401
	TRUNCDW	F4, F5			// 85881a01
	TRUNCFW	F4, F5			// 85841a01
	SQRTF	F4, F5			// 85441401
	SQRTD	F4, F5			// 85481401

	DBAR	 			// 00007238
	NOOP	 			// 00004003