if err := binary.Read(sr, binary.BigEndian, shdr); err != nil {
				return nil, err
			}
			s.Name = cstring(shdr.Sname[:])
			s.VirtualAddress = uint64(shdr.Svaddr)
			s.Size = uint64(shdr.Ssize)
			scnptr = uint64(shdr.Sscnptr)
			s.Type = shdr.Sflags
			s.Relptr = uint64(shdr.Srelptr)
			s.Nreloc = uint32(shdr.Snreloc)
		case U64_TOCMAGIC:
			shdr := new(SectionHeader64)

	Read_bytes                uint64
	Write_bytes               uint64
	Cancelled_write_bytes     uint64
	Nvcsw                     uint64
	Nivcsw                    uint64
	Ac_utimescaled            uint64
	Ac_stimescaled            uint64
	Cpu_scaled_run_real_total uint64
	Freepages_count           uint64
	Freepages_delay_total     uint64
	Thrashing_count           uint64
	Thrashing_delay_total     uint64

	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Start) },         // optional uint64 memory_offset = 2
	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Limit) },         // optional uint64 memory_limit = 3
	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Offset) },        // optional uint64 file_offset = 4

}

// Int64 returns v's value as an int64. It panics
// if v is not a signed integer.
func (v Value) Int64() int64 {
	if g, w := v.Kind(), KindInt64; g != w {
		panic(fmt.Sprintf("Value kind is %s, not %s", g, w))
	}
	return int64(v.num)
}

// Uint64 returns v's value as a uint64. It panics
// if v is not an unsigned integer.
func (v Value) Uint64() uint64 {

	tagLocation_ID        = 1 // uint64
	tagLocation_MappingID = 2 // uint64
	tagLocation_Address   = 3 // uint64
	tagLocation_Line      = 4 // repeated Line

	// message Line
	tagLine_FunctionID = 1 // uint64
	tagLine_Line       = 2 // int64

	// message Function
	tagFunction_ID         = 1 // uint64
	tagFunction_Name       = 2 // int64 (string table index)
	tagFunction_SystemName = 3 // int64 (string table index)

	GCAssistTime    int64 // GC assists
	GCDedicatedTime int64 // GC dedicated mark workers + pauses
	GCIdleTime      int64 // GC idle mark workers
	GCPauseTime     int64 // GC pauses (all GOMAXPROCS, even if just 1 is running)
	GCTotalTime     int64

	ScavengeAssistTime int64 // background scavenger
	ScavengeBgTime     int64 // scavenge assists
	ScavengeTotalTime  int64

		pos++
	}
	return uint64(b[0]) | uint64(b[1])<<8 |
		uint64(b[2])<<16 | uint64(b[3])<<24 |
		uint64(b[4])<<32 | uint64(b[5])<<40 |
		uint64(b[6])<<48 | uint64(b[7])<<56
}

func (r *debugLogReader) peek() (tick uint64) {
	// Consume any sync records.
	size := uint64(0)
	for size == 0 {
		if r.begin+debugLogHeaderSize > r.end {
			return ^uint64(0)
		}

	strX int64
	numX int64 // Integer value for this label
}

// Mapping corresponds to Profile.Mapping
type Mapping struct {
	ID              uint64
	Start           uint64
	Limit           uint64
	Offset          uint64
	File            string
	BuildID         string
	HasFunctions    bool
	HasFilenames    bool
	HasLineNumbers  bool
	HasInlineFrames bool

	fileX    int64
	buildIDX int64
}

	return Xadd(&u.value, delta)
}

// Uint64 is an atomically accessed uint64 value.
//
// 8-byte aligned on all platforms, unlike a regular uint64.
//
// A Uint64 must not be copied.
type Uint64 struct {
	noCopy noCopy
	_      align64
	value  uint64
}

// Load accesses and returns the value atomically.
//
//go:nosplit
func (u *Uint64) Load() uint64 {
	return Load64(&u.value)
}

	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Start) },         // optional uint64 memory_offset = 2
	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Limit) },         // optional uint64 memory_limit = 3
	func(b *buffer, m message) error { return decodeUint64(b, &m.(*Mapping).Offset) },        // optional uint64 file_offset = 4