FuncFlagAsm
)

// A FuncID identifies particular functions that need to be treated
// specially by the runtime.
// Note that in some situations involving plugins, there may be multiple
// copies of a particular special runtime function.
type FuncID uint8

const (
	// If you add a FuncID, you probably also want to add an entry to the map in
	// ../../cmd/internal/objabi/funcid.go

			start := int(sf.startLine) - tiuStart
			if start != wantStart[name] {
				t.Errorf("tiuTest+%#x: want startLine %d, got %d", pc-pc1, wantStart[name], start)
			}
			if sf.funcID != abi.FuncIDNormal {
				t.Errorf("tiuTest+%#x: bad funcID %v", pc-pc1, sf.funcID)
			}

			if len(stack) > 0 {
				stack += " "
			}
			stack += FmtSprintf("%s:%d", name, line-tiuStart)
		}

		if stack != prevStack {
			prevStack = stack

		}

		u, uf := newInlineUnwinder(fi, callPC)
		for ; uf.valid(); uf = u.next(uf) {
			sf := u.srcFunc(uf)
			if sf.funcID == abi.FuncIDWrapper && elideWrapperCalling(lastFuncID) {
				// ignore wrappers
			} else if more := skipOrAdd(uf.pc + 1); !more {
				break outer
			}
			lastFuncID = sf.funcID
		}
	}
	return n
}

// startPCForTrace returns the start PC of a goroutine for tracing purposes.

				return false
			}
			_, ok = strings.get(frame.funcID)
			if !ok {
				err = fmt.Errorf("found invalid func string ID %d for stack %d", frame.funcID, id)
				return false
			}
			_, ok = strings.get(frame.fileID)
			if !ok {
				err = fmt.Errorf("found invalid file string ID %d for stack %d", frame.fileID, id)
				return false
			}
		}
		return true
	})
	return err
}

		}
		return nil
	}

	// Write out entries for each live function.
	emitter := func(pkid uint32, funcid uint32, counters []uint32) error {
		cfw.csh.FcnEntries++
		if err := wrval(uint32(len(counters))); err != nil {
			return err
		}

		if err := wrval(pkid); err != nil {
			return err
		}

		if err := wrval(funcid); err != nil {
			return err
		}
		for _, val := range counters {

type inlinedCall struct {
	funcID    abi.FuncID // type of the called function
	_         [3]byte
	nameOff   int32 // offset into pclntab for name of called function
	parentPc  int32 // position of an instruction whose source position is the call site (offset from entry)
	startLine int32 // line number of start of function (func keyword/TEXT directive)
}

		}
		off = sb.SetUint32(ctxt.Arch, off, cuIdx)

		// startLine int32
		off = sb.SetUint32(ctxt.Arch, off, uint32(startLine))

		// funcID uint8
		var funcID abi.FuncID
		if fi.Valid() {
			funcID = fi.FuncID()
		}
		off = sb.SetUint8(ctxt.Arch, off, uint8(funcID))

		// flag uint8
		var flag abi.FuncFlag
		if fi.Valid() {
			flag = fi.FuncFlag()
		}

// goroutine.
func isSystemGoroutine(gp *g, fixed bool) bool {
	// Keep this in sync with internal/trace.IsSystemGoroutine.
	f := findfunc(gp.startpc)
	if !f.valid() {
		return false
	}
	if f.funcID == abi.FuncID_runtime_main || f.funcID == abi.FuncID_corostart || f.funcID == abi.FuncID_handleAsyncEvent {
		return false
	}
	if f.funcID == abi.FuncID_runfinq {

	"unsafe"
)

// WriteMetaDir implements [runtime/coverage.WriteMetaDir].
func WriteMetaDir(dir string) error {
	if !finalHashComputed {
		return fmt.Errorf("error: no meta-data available (binary not built with -cover?)")
	}
	return emitMetaDataToDirectory(dir, rtcov.Meta.List)
}

// WriteMeta implements [runtime/coverage.WriteMeta].
func WriteMeta(w io.Writer) error {
	if w == nil {

	// symbolic information.
	PC uintptr

	// Func is the Func value of this call frame. This may be nil
	// for non-Go code or fully inlined functions.
	Func *Func

	// Function is the package path-qualified function name of
	// this call frame. If non-empty, this string uniquely
	// identifies a single function in the program.
	// This may be the empty string if not known.
	// If Func is not nil then Function == Func.Name().
	Function string