// SPDY connection.
//
// The stream tunnel proxy tunnels SPDY frames through a WebSocket
// connection, and it is used for the PortForward subprotocol (e.g.
// kubectl port-forward). This proxy implements tunneling by transparently
// encoding and decoding SPDY framed data into and out of the payload of a
// WebSocket data frame. The primary structure for this tunneling is

// in the context that starts executing at sigresume.
TEXT runtime·sigresume(SB),NOSPLIT|NOFRAME,$0
	MOVQ	R8, SP
	JMP	R9

TEXT runtime·exceptiontramp(SB),NOSPLIT|NOFRAME,$0
	// PExceptionPointers already on CX
	MOVQ	$const_callbackVEH, DX
	JMP	sigtramp<>(SB)

TEXT runtime·firstcontinuetramp(SB),NOSPLIT|NOFRAME,$0-0
	// PExceptionPointers already on CX
	MOVQ	$const_callbackFirstVCH, DX
	JMP	sigtramp<>(SB)

	var pc [maxStackLen]uintptr
	// Skip two extra frames to account for this function
	// and runtime.Callers itself.
	n := runtime.Callers(skip+2, pc[:])
	if n == 0 {
		panic("testing: zero callers found")
	}
	frames := runtime.CallersFrames(pc[:n])
	var firstFrame, prevFrame, frame runtime.Frame
	for more := true; more; prevFrame = frame {
		frame, more = frames.Next()
		if frame.Function == "runtime.gopanic" {
			continue

			// This is useful mainly for allocation traces.
			show = true
			fmt.Fprintf(w, "#\t%#x\t%s+%#x\t%s:%d\n", frame.PC, name, frame.PC-frame.Entry, frame.File, frame.Line)
		}
		if !more {
			break
		}
	}
	if !show {
		// We didn't print anything; do it again,
		// and this time include runtime functions.
		printStackRecord(w, stk, true)
		return
	}
	fmt.Fprintf(w, "\n")
}

	MOVL	CX, SP
	MOVL	AX, ret+8(FP)
	RET

// cgocallback(fn, frame unsafe.Pointer, ctxt uintptr)
// See cgocall.go for more details.
TEXT ·cgocallback(SB),NOSPLIT,$12-12  // Frame size must match commented places below
	NO_LOCAL_POINTERS

	// Skip cgocallbackg, just dropm when fn is nil, and frame is the saved g.
	// It is used to dropm while thread is exiting.
	MOVL	fn+0(FP), AX
	CMPL	AX, $0

In Go 1.23, overhead should be in the single digit percentages.

<!-- https://go.dev/issue/62737 , https://golang.org/cl/576681,  https://golang.org/cl/577615 -->
The compiler in Go 1.23 can now overlap the stack frame slots of local variables
accessed in disjoint regions of a function, which reduces stack usage
for Go applications.

<!-- https://go.dev/cl/577935 -->

    fun beanStateWriterFor(beanType: Class<*>): BeanStateWriter

    suspend fun write(value: Any?)

    fun writeClass(type: Class<*>)
}


interface Tracer {

    fun open(frame: String)

    fun close(frame: String)
}


interface ReadContext : IsolateContext, MutableIsolateContext, Decoder {

    val sharedIdentities: ReadIdentities

    override val isolate: ReadIsolate

	// LoopCount controls the number of times an animation will be
	// restarted during display.
	// A LoopCount of 0 means to loop forever.
	// A LoopCount of -1 means to show each frame only once.
	// Otherwise, the animation is looped LoopCount+1 times.
	LoopCount int
	// Disposal is the successive disposal methods, one per frame. For

	// containing that address.
	Symbols(r *regexp.Regexp, addr uint64) ([]*Sym, error)

	// Close closes the file, releasing associated resources.
	Close() error
}

// A Frame describes a location in a single line in a source file.
type Frame struct {
	Func   string // name of function
	File   string // source file name
	Line   int    // line in file
	Column int    // column in line (if available)
}

				lastAddr = addr
			} else if (addr-lastAddr <= neighborhood) && lastFrames != nil {
				frames = lastFrames
			}

			sp.addStack(addr, frames)
		}
	}
}

func (sp *sourcePrinter) addStack(addr uint64, frames []plugin.Frame) {
	// See if the stack contains a function we are interested in.
	for i, f := range frames {
		if !sp.interest[f.Func] {
			continue
		}