{name: "PanicExtend", argLength: 4, aux: "Int64", typ: "Mem", call: true}, // arg0=idxHi, arg1=idxLo, arg2=len, arg3=mem, returns memory.

	// Function calls. Arguments to the call have already been written to the stack.
	// Return values appear on the stack. The method receiver, if any, is treated
	// as a phantom first argument.
	// TODO(josharian): ClosureCall and InterCall should have Int32 aux
	// to match StaticCall's 32 bit arg size limit.

			}

			spdelta := int64(pcsp.Value)
			if !haslr {
				// Return address has been pushed onto stack.
				spdelta += int64(d.arch.PtrSize)
			}

			if haslr && !fi.TopFrame() {
				// TODO(bryanpkc): This is imprecise. In general, the instruction
				// that stores the return address to the stack frame is not the
				// same one that allocates the frame.
				if pcsp.Value > 0 {

	n := tracebackPCs(&u, 0, pcbuf)
	r.Stack = make([]uintptr, n)
	copy(r.Stack, pcbuf)
}

// Stack formats a stack trace of the calling goroutine into buf
// and returns the number of bytes written to buf.
// If all is true, Stack formats stack traces of all other goroutines
// into buf after the trace for the current goroutine.
func Stack(buf []byte, all bool) int {
	var stw worldStop
	if all {

	gs.augmentName(st.Stack)

	// Handle the goroutine state transition.
	from, to := st.Goroutine()
	if from == to {
		// Filter out no-op events.
		return
	}
	if from.Executing() && !to.Executing() {
		if to == trace.GoWaiting {
			// Goroutine started blocking.
			gs.block(ev.Time(), ev.Stack(), st.Reason, ctx)
		} else {
			gs.stop(ev.Time(), ev.Stack(), ctx)
		}
	}

		return nil, fmt.Errorf("unexpected addr2line output: %s", resp)
	}

	var stack []plugin.Frame
	for {
		frame, end := d.readFrame()
		if end {
			break
		}

		if frame != (plugin.Frame{}) {
			stack = append(stack, frame)
		}
	}
	return stack, err
}

// addrInfo returns the stack frame information for a specific program

// license that can be found in the LICENSE file.

package sys

import (
	"internal/goarch"
	"internal/goos"
)

// AIX requires a larger stack for syscalls.
// The race build also needs more stack. See issue 54291.
// This arithmetic must match that in cmd/internal/objabi/stack.go:stackGuardMultiplier.
const StackGuardMultiplier = 1 + goos.IsAix + isRace

// DefaultPhysPageSize is the default physical page size.

//
//go:linkname checkptrBase
func checkptrBase(p unsafe.Pointer) uintptr {
	// stack
	if gp := getg(); gp.stack.lo <= uintptr(p) && uintptr(p) < gp.stack.hi {
		// TODO(mdempsky): Walk the stack to identify the
		// specific stack frame or even stack object that p
		// points into.
		//
		// In the mean time, use "1" as a pseudo-address to
		// represent the stack. This is an invalid address on
		// all platforms, so it's guaranteed to be distinct

// with RFC 8032. RFC 8032's private keys correspond to seeds in this
// package.
func NewKeyFromSeed(seed []byte) PrivateKey {
	// Outline the function body so that the returned key can be stack-allocated.
	privateKey := make([]byte, PrivateKeySize)
	newKeyFromSeed(privateKey, seed)
	return privateKey
}

func newKeyFromSeed(privateKey, seed []byte) {
	if l := len(seed); l != SeedSize {

	C_WEAKEXT = 111 // Weak external symbol
	C_DWARF   = 112 // DWARF symbol
	C_GSYM    = 128 // Global variable
	C_LSYM    = 129 // Automatic variable allocated on stack
	C_PSYM    = 130 // Argument to subroutine allocated on stack
	C_RSYM    = 131 // Register variable
	C_RPSYM   = 132 // Argument to function or procedure stored in register
	C_STSYM   = 133 // Statically allocated symbol

func popDefer(gp *g) {
	d := gp._defer
	d.fn = nil // Can in theory point to the stack
	// We must not copy the stack between the updating gp._defer and setting
	// d.link to nil. Between these two steps, d is not on any defer list, so
	// stack copying won't adjust stack pointers in it (namely, d.link). Hence,
	// if we were to copy the stack, d could then contain a stale pointer.
	gp._defer = d.link
	d.link = nil