base.ErrorfAt(fn.Pos(), 0, "%v defined in both Go and assembly", fn)
			}
			fn.ABI = defABI
		}

		if fn.Pragma&ir.CgoUnsafeArgs != 0 {
			// CgoUnsafeArgs indicates the function (or its callee) uses
			// offsets to dispatch arguments, which currently using ABI0
			// frame layout. Pin it to ABI0.
			fn.ABI = obj.ABI0
			// Propagate linkname attribute, which was set on the ABIInternal
			// symbol.

        if (startPosition * 2 >= windowSize) {
            int offset = params.getOffset();
            if (offset < 0) {
                offset = 0;
            } else if (offset > windowSize / 2) {
                offset = windowSize / 2;
            }
            int start = startPosition - offset;
            if (start < 0) {
                start = 0;
            }

	// Arm64.

	// Set a MOV[NZ] immediate field to bits [15:0] of the offset from the thread
	// local base to the thread local variable defined by the referenced (thread
	// local) symbol. Error if the offset does not fit into 16 bits.
	R_ARM64_TLS_LE

	// Relocates an ADRP; LD64 instruction sequence to load the offset between
	// the thread local base and the thread local variable defined by the

func (span *mspan) incPinCounter(offset uintptr) {
	var rec *specialPinCounter
	ref, exists := span.specialFindSplicePoint(offset, _KindSpecialPinCounter)
	if !exists {
		lock(&mheap_.speciallock)
		rec = (*specialPinCounter)(mheap_.specialPinCounterAlloc.alloc())
		unlock(&mheap_.speciallock)
		// splice in record, fill in offset.
		rec.special.offset = uint16(offset)
		rec.special.kind = _KindSpecialPinCounter

	}

	return &HTTPRangeSpec{Start: start, End: end}
}

// Returns the compressed offset which should be skipped.
// If encrypted offsets are adjusted for encrypted block headers/trailers.
// Since de-compression is after decryption encryption overhead is only added to compressedOffset.

	SymRdWr = SymRead | SymWrite

	SymNone SymEffect = 0
)

// A Sym represents a symbolic offset from a base register.
// Currently a Sym can be one of 3 things:
//   - a *gc.Node, for an offset from SP (the stack pointer)
//   - a *obj.LSym, for an offset from SB (the global pointer)
//   - nil, for no offset
type Sym interface {
	CanBeAnSSASym()
	CanBeAnSSAAux()
}

        if (mappingItemList == null) {
            reload(null);
        }

        if (offset >= mappingItemList.size() || offset < 0) {
            return new PagingList<>(Collections.<CharMappingItem> emptyList(), offset, size, mappingItemList.size());
        }

        int toIndex = offset + size;
        if (toIndex > mappingItemList.size()) {

	if lastAddr, ok := p.dataAddr[name]; ok && nameAddr.Offset < lastAddr {
		p.errorf("overlapping DATA entry for %s", name)
		return
	}
	p.dataAddr[name] = nameAddr.Offset + int64(sz)

	switch valueAddr.Type {
	case obj.TYPE_CONST:
		switch sz {
		case 1, 2, 4, 8:
			nameAddr.Sym.WriteInt(p.ctxt, nameAddr.Offset, int(sz), valueAddr.Offset)
		default:
			p.errorf("bad int size for DATA argument: %d", sz)

			continue
		}
		for _, a := range v.Args {
			if a.Block == b && a.Type.IsMemory() {
				v = a
				goto walkloop
			}
		}
	}
}

// A shadowRange encodes a set of byte offsets [lo():hi()] from
// a given pointer that will be written to later in the block.
// A zero shadowRange encodes an empty shadowed range (and so
// does a -1 shadowRange, which is what sparsemap.get returns

		// by this relocation.
		relocs := ldr.Relocs(s)
		offset := int64(relocs.At(ri).Off())
		hi20Sym := findHI20Symbol(ctxt, ldr, ldr.SymValue(s)+offset)
		if hi20Sym == 0 {
			ld.Errorf(nil, "failed to find text symbol for HI20 relocation at %d (%x)", sectoff, ldr.SymValue(s)+offset)
			return false
		}
		hi20ElfSym := ld.ElfSymForReloc(ctxt, hi20Sym)