calleeFuncID abi.FuncID

	// flags are the flags to this unwind. Some of these are updated as we
	// unwind (see the flags documentation).
	flags unwindFlags
}

// init initializes u to start unwinding gp's stack and positions the
// iterator on gp's innermost frame. gp must not be the current G.
//
// A single unwinder can be reused for multiple unwinds.
func (u *unwinder) init(gp *g, flags unwindFlags) {

	// the outermost function.
	index int32
}

// newInlineUnwinder creates an inlineUnwinder initially set to the inner-most
// inlined frame at PC. PC should be a "call PC" (not a "return PC").
//
// This unwinder uses non-strict handling of PC because it's assumed this is
// only ever used for symbolic debugging. If things go really wrong, it'll just
// fall back to the outermost frame.
//

		// It may still have an M, if it's locked to some M.
		mp = gp.lockedm.ptr()
	}
	nstk := 1
	if tracefpunwindoff() || (mp != nil && mp.hasCgoOnStack()) {
		// Slow path: Unwind using default unwinder. Used when frame pointer
		// unwinding is unavailable or disabled (tracefpunwindoff), or might
		// produce incomplete results or crashes (hasCgoOnStack). Note that no

	MOVD	24(R1), R2

	UNSTACK_AND_RESTORE_GO_TO_HOST_ABI(32)
	RET

#ifdef GOARCH_ppc64le
TEXT runtime·cgoSigtramp(SB),NOSPLIT|NOFRAME,$0
	// The stack unwinder, presumably written in C, may not be able to
	// handle Go frame correctly. So, this function is NOFRAME, and we
	// save/restore LR manually, and obey ELFv2 calling conventions.
	MOVD	LR, R10

	// Restore callee-save registers.
	RESTORE_R19_TO_R28(8*4)
	RESTORE_F8_TO_F15(8*14)
	RET

// Called from c-abi, R0: sig, R1: info, R2: cxt
TEXT runtime·cgoSigtramp(SB),NOSPLIT|NOFRAME,$0
	// The stack unwinder, presumably written in C, may not be able to
	// handle Go frame correctly. So, this function is NOFRAME, and we
	// save/restore LR manually.
	MOVD	LR, R10
	// Save R27, g because they will be clobbered,

	dumpint(uint64(uintptr(unsafe.Pointer(gp._panic))))

	// dump stack
	var child childInfo
	child.args.n = -1
	child.arglen = 0
	child.sp = nil
	child.depth = 0
	var u unwinder
	for u.initAt(pc, sp, lr, gp, 0); u.valid(); u.next() {
		dumpframe(&u.frame, &child)
	}

	// dump defer & panic records
	for d := gp._defer; d != nil; d = d.link {
		dumpint(tagDefer)

	Setting N to 0 will report no ancestry information.

	tracefpunwindoff: setting tracefpunwindoff=1 forces the execution tracer to
	use the runtime's default stack unwinder instead of frame pointer unwinding.
	This increases tracer overhead, but could be helpful as a workaround or for
	debugging unexpected regressions caused by frame pointer unwinding.

	// Force SPWRITE. This function doesn't actually write SP,
	// but it is called with a special calling convention where
	// the caller doesn't save LR on stack but passes it as a
	// register (R3), and the unwinder currently doesn't understand.
	// Make it SPWRITE to stop unwinding. (See issue 54332)
	MOVV	R29, R29

	MOVV	R0, REGCTXT
	JMP	runtime·morestack(SB)

// reflectcall: call a function with the given argument list

	// Force SPWRITE. This function doesn't actually write SP,
	// but it is called with a special calling convention where
	// the caller doesn't save LR on stack but passes it as a
	// register, and the unwinder currently doesn't understand.
	// Make it SPWRITE to stop unwinding. (See issue 54332)
	MOV	X2, X2

	MOV	ZERO, CTXT
	JMP	runtime·morestack(SB)

// AES hashing not implemented for riscv64

	// Force SPWRITE. This function doesn't actually write SP,
	// but it is called with a special calling convention where
	// the caller doesn't save LR on stack but passes it as a
	// register (R5), and the unwinder currently doesn't understand.
	// Make it SPWRITE to stop unwinding. (See issue 54332)
	MOVD	R15, R15

	MOVD	$0, R12
	BR	runtime·morestack(SB)

// reflectcall: call a function with the given argument list