at the beginning, as in <code>first_arg+0(FP)</code> and <code>second_arg+8(FP)</code>.
(The meaning of the offset—offset from the frame pointer—distinct
from its use with <code>SB</code>, where it is an offset from the symbol.)
The assembler enforces this convention, rejecting plain <code>0(FP)</code> and <code>8(FP)</code>.

func ARMMRCOffset(op obj.As, cond string, x0, x1, x2, x3, x4, x5 int64) (offset int64, op0 obj.As, ok bool) {
	op1 := int64(0)
	if op == arm.AMRC {
		op1 = 1
	}
	bits, ok := ParseARMCondition(cond)
	if !ok {
		return
	}
	offset = (0xe << 24) | // opcode
		(op1 << 20) | // MCR/MRC
		((int64(bits) ^ arm.C_SCOND_XOR) << 28) | // scond

			"23 GNU.sparse.offset=1\n25 GNU.sparse.numbytes=2\n" +
			"23 GNU.sparse.offset=3\n25 GNU.sparse.numbytes=4\n",
			map[string]string{paxGNUSparseSize: "10", paxGNUSparseNumBlocks: "2", paxGNUSparseMap: "1,2,3,4"}, true},
		{"22 GNU.sparse.size=10\n26 GNU.sparse.numblocks=1\n" +
			"25 GNU.sparse.numbytes=2\n23 GNU.sparse.offset=1\n",
			nil, false},

// timeZone returns a *time.Location based on the provided offset.
// If the offset is non-sensible, then this uses an offset of zero.
func timeZone(offset time.Duration) *time.Location {
	const (
		minOffset   = -12 * time.Hour  // E.g., Baker island at -12:00
		maxOffset   = +14 * time.Hour  // E.g., Line island at +14:00
		offsetAlias = 15 * time.Minute // E.g., Nepal at +5:45
	)
	offset = offset.Round(offsetAlias)

	n := len(d.files) - d.offset
	if count > 0 && n > count {
		n = count
	}
	if n == 0 {
		if count <= 0 {
			return nil, nil
		}
		return nil, io.EOF
	}
	list := make([]fs.DirEntry, n)
	for i := range list {
		s, err := d.files[d.offset+i].stat()
		if err != nil {
			return nil, err
		}
		list[i] = s
	}
	d.offset += n
	return list, nil

	MOVW	$0, (R1)  // 3f0000b9
	MOVWU	$0, (R1)  // 3f0000b9
	MOVH	$0, (R1)  // 3f000079
	MOVHU	$0, (R1)  // 3f000079
	MOVB	$0, (R1)  // 3f000039
	MOVBU	$0, (R1)  // 3f000039

// small offset fits into instructions
	MOVB	R1, 1(R2) // 41040039
	MOVH	R1, 1(R2) // 41100078
	MOVH	R1, 2(R2) // 41040079
	MOVW	R1, 1(R2) // 411000b8
	MOVW	R1, 4(R2) // 410400b9
	MOVD	R1, 1(R2) // 411000f8

	needsUnsafe := false
	// Walk backward so that in C.f1(C.f2()) we rewrite C.f2 first.
	for _, call := range f.Calls {
		if call.Done {
			continue
		}
		start := f.offset(call.Call.Pos())
		end := f.offset(call.Call.End())
		str, nu := p.rewriteCall(f, call)
		if str != "" {
			f.Edit.Replace(start, end, str)
			if nu {
				needsUnsafe = true
			}
		}
	}
	return needsUnsafe
}

	// This matches the limit used by libarchive.
	maxSpecialFileSize = 1 << 20
)

// blockPadding computes the number of bytes needed to pad offset up to the
// nearest block edge where 0 <= n < blockSize.
func blockPadding(offset int64) (n int64) {
	return -offset & (blockSize - 1)
}

var zeroBlock block

type block [blockSize]byte

// Convert block to any number of formats.

//		g = nullgen;
//		g.Type = obj.TYPE_CONST;
//		g.Offset = int64($6);
//		outcode($1, $2, &$3, 0, &g);
//	}
	MOVM	0(R1), [R2,R5,R8,g] // MOVM	(R1), [R2,R5,R8,g]
	MOVM	(R1), [R2-R5] // MOVM (R1), [R2,R3,R4,R5]
	MOVM	(R1), [R2]

//	LTYPE8 cond '[' reglist ']' ',' ioreg
//	{
//		var g obj.Addr
//
//		g = nullgen;
//		g.Type = obj.TYPE_CONST;
//		g.Offset = int64($4);
//		outcode($1, $2, &g, 0, &$7);
//	}

pkg debug/dwarf, type DecodeError struct, Offset Offset
pkg debug/dwarf, type DotDotDotType struct
pkg debug/dwarf, type DotDotDotType struct, embedded CommonType
pkg debug/dwarf, type Entry struct
pkg debug/dwarf, type Entry struct, Children bool
pkg debug/dwarf, type Entry struct, Field []Field
pkg debug/dwarf, type Entry struct, Offset Offset
pkg debug/dwarf, type Entry struct, Tag Tag