// Rearranging,
//   2^e > x * delta * c
// x can be at most 2^n-1 and delta can be at most 1.
// So it is sufficient to have 2^e >= 2^n*c.
// So we'll choose e = n + s, with s = ⎡log2(c)⎤.
//
// An additional complication arises because m has n+1 bits in it.
// Hardware restricts us to n bit by n bit multiplies.
// We divide into 3 cases:
//
// Case 1: m is even.
//   ⎣x / c⎦ = ⎣x * m / 2^(n+s)⎦
//   ⎣x / c⎦ = ⎣x * (m/2) / 2^(n+s-1)⎦

	var buf bytes.Buffer
	WriteType(&buf, typ, qf)
	return buf.String()
}

// WriteType writes the string representation of typ to buf.
// The [Qualifier] controls the printing of
// package-level objects, and may be nil.
func WriteType(buf *bytes.Buffer, typ Type, qf Qualifier) {
	newTypeWriter(buf, qf).typ(typ)
}

// WriteSignature writes the representation of the signature sig to buf,

	buf := fmtBufferPool.Get().(*bytes.Buffer)
	buf.Reset()
	defer fmtBufferPool.Put(buf)

	tconv2(buf, t, verb, mode, nil)
	return InternString(buf.Bytes())
}

// tconv2 writes a string representation of t to b.
// flag and mode control exactly what is printed.
// Any types x that are already in the visited map get printed as @%d where %d=visited[x].

	m.Run()
	return nil
}

func testContext(t testing.TB) context.Context {
	w := newTestWriter(t)
	return cfg.WithBuildXWriter(context.Background(), w)
}

// A testWriter is an io.Writer that writes to a test's log.
//
// The writer batches written data until the last byte of a write is a newline
// character, then flushes the batched data as a single call to Logf.

	}
	if p.errorCount > 0 {
		return nil, false
	}
	p.patch()
	return p.firstProg, true
}

// ParseSymABIs parses p's assembly code to find text symbol
// definitions and references and writes a symabis file to w.
func (p *Parser) ParseSymABIs(w io.Writer) bool {
	operands := make([][]lex.Token, 0, 3)
	for {
		word, _, operands1, ok := p.line(operands)
		if !ok {
			break
		}

	shiftBase := getShiftBase(a)
	if shiftBase == nil {
		return false
	}
	for i := int64(0); i < n; i++ {
		if !isShiftBase(a[i].store, shiftBase) {
			return false
		}
	}

	// Check for writes in little-endian or big-endian order.
	isLittleEndian := true
	shift0 := shift(a[0].store, shiftBase)
	for i := int64(1); i < n; i++ {
		if shift(a[i].store, shiftBase) != shift0+i*size*8 {
			isLittleEndian = false

// even device files, for example, which is not intended.
func mayberemovefile(s string) {
	if fi, err := os.Lstat(s); err == nil && !fi.Mode().IsRegular() {
		return
	}
	os.Remove(s)
}

// writeFile writes the text to file.
func (sh *Shell) writeFile(file string, text []byte) error {
	if cfg.BuildN || cfg.BuildX {
		switch {
		case len(text) == 0:
			sh.ShowCmd("", "echo -n > %s # internal", file)

		// Should we use the 3-byte TESTB $0, (reg) instead? It is larger
		// but it doesn't have false dependency on AX.
		// Or maybe allocate an output register and use MOVL (reg),reg2 ?
		// That trades clobbering flags for clobbering a register.
		p := s.Prog(x86.ATESTB)
		p.From.Type = obj.TYPE_REG
		p.From.Reg = x86.REG_AX
		p.To.Type = obj.TYPE_MEM
		p.To.Reg = v.Args[0].Reg()
		ssagen.AddAux(&p.To, v)

	// discarding it because it was sent by another program and
	// there is no Go handler for it. To avoid this, run the
	// program several times in the hopes that it will eventually
	// fail.
	const tries = 20
	for i := 0; i < tries; i++ {
		err := runSignalForwardingTest(t, "2")
		if err == nil {
			continue
		}

		// If the signal is delivered to a C thread, as expected,

	b.n += n
	nn += n
	return nn, nil
}

// WriteByte writes a single byte.
func (b *Writer) WriteByte(c byte) error {
	if b.err != nil {
		return b.err
	}
	if b.Available() <= 0 && b.Flush() != nil {
		return b.err
	}
	b.buf[b.n] = c
	b.n++
	return nil
}

// WriteRune writes a single Unicode code point, returning
// the number of bytes written and any error.