ObjFlagStd                      // standard library package
)

// Sym.Flag
const (
	SymFlagDupok = 1 << iota
	SymFlagLocal
	SymFlagTypelink
	SymFlagLeaf
	SymFlagNoSplit
	SymFlagReflectMethod
	SymFlagGoType
)

// Sym.Flag2
const (
	SymFlagUsedInIface = 1 << iota
	SymFlagItab
	SymFlagDict
	SymFlagPkgInit
	SymFlagLinkname
	SymFlagABIWrapper
)

	BO_NOTBCR  = 4  // branch on not cr value
)

// Bit settings from the CR

const (
	C_COND_LT = iota // 0 result is negative
	C_COND_GT        // 1 result is positive
	C_COND_EQ        // 2 result is zero
	C_COND_SO        // 3 summary overflow or FP compare w/ NaN
)

const (
	C_NONE     = iota
	C_REGP     /* An even numbered gpr which can be used a gpr pair argument */
	C_REG      /* Any gpr register */

	sema  uint32
}

// A Locker represents an object that can be locked and unlocked.
type Locker interface {
	Lock()
	Unlock()
}

const (
	mutexLocked = 1 << iota // mutex is locked
	mutexWoken
	mutexStarving
	mutexWaiterShift = iota

	// Mutex fairness.
	//
	// Mutex can be in 2 modes of operations: normal and starvation.
	// In normal mode waiters are queued in FIFO order, but a woken up waiter

	// Examples of TopFrame functions include goexit, which appears
	// at the top of a user goroutine stack, and mstart, which appears
	// at the top of a system goroutine stack.
	FuncFlagTopFrame FuncFlag = 1 << iota

	// FuncFlagSPWrite indicates a function that writes an arbitrary value to SP
	// (any write other than adding or subtracting a constant amount).
	// The traceback routines cannot encode such changes into the

)

// Experiments.
const (
	// AllocFree is the alloc-free events experiment.
	AllocFree event.Experiment = 1 + iota
)

// Experimental events.
const (
	_ event.Type = 127 + iota

	// Experimental events for AllocFree.

	// Experimental heap span events. Added in Go 1.23.
	EvSpan      // heap span exists [timestamp, id, npages, type/class]

package oldtrace

import "errors"

type orderEvent struct {
	ev   Event
	proc *proc
}

type gStatus int

type gState struct {
	seq    uint64
	status gStatus
}

const (
	gDead gStatus = iota
	gRunnable
	gRunning
	gWaiting

	unordered = ^uint64(0)
	garbage   = ^uint64(0) - 1
	noseq     = ^uint64(0)
	seqinc    = ^uint64(0) - 1
)

		return

	case *Const:
		check.addDeclDep(obj)
		if !isValid(typ) {
			return
		}
		if obj == universeIota {
			if check.iota == nil {
				check.error(e, InvalidIota, "cannot use iota outside constant declaration")
				return
			}
			x.val = check.iota
		} else {
			x.val = obj.val
		}
		assert(x.val != nil)
		x.mode = constant_

	case *TypeName:

}

var predeclaredConsts = [...]struct {
	name string
	kind BasicKind
	val  constant.Value
}{
	{"true", UntypedBool, constant.MakeBool(true)},
	{"false", UntypedBool, constant.MakeBool(false)},
	{"iota", UntypedInt, constant.MakeInt64(0)},
}

func defPredeclaredConsts() {
	for _, c := range predeclaredConsts {
		def(NewConst(nopos, nil, c.name, Typ[c.kind], c.val))
	}
}

func defPredeclaredNil() {

}

var predeclaredConsts = [...]struct {
	name string
	kind BasicKind
	val  constant.Value
}{
	{"true", UntypedBool, constant.MakeBool(true)},
	{"false", UntypedBool, constant.MakeBool(false)},
	{"iota", UntypedInt, constant.MakeInt64(0)},
}

func defPredeclaredConsts() {
	for _, c := range predeclaredConsts {
		def(NewConst(nopos, nil, c.name, Typ[c.kind], c.val))
	}
}

func defPredeclaredNil() {

// GoState represents the state of a goroutine.
//
// New GoStates may be added in the future. Users of this type must be robust
// to that possibility.
type GoState uint8

const (
	GoUndetermined GoState = iota // No information is known about the goroutine.
	GoNotExist                    // Goroutine does not exist.
	GoRunnable                    // Goroutine is runnable but not running.