// stackguard1 is the stack pointer compared in the //go:systemstack stack growth prologue.
	// It is stack.lo+StackGuard on g0 and gsignal stacks.
	// It is ~0 on other goroutine stacks, to trigger a call to morestackc (and crash).
	stack       stack   // offset known to runtime/cgo
	stackguard0 uintptr // offset known to liblink
	stackguard1 uintptr // offset known to liblink

	}

	// Spill the register args that could be clobbered by the
	// morestack code
	p = ctxt.EmitEntryStackMap(cursym, p, newprog)
	p = cursym.Func().SpillRegisterArgs(p, newprog)

	// CALL runtime.morestack(SB)
	p = obj.Appendp(p, newprog)
	p.As = obj.ACALL
	p.To.Type = obj.TYPE_BRANCH

	if cursym.CFunc() {
		p.To.Sym = ctxt.Lookup("runtime.morestackc")
	} else if !cursym.Func().Text.From.Sym.NeedCtxt() {

	// call to maymorestack *before* processing resume points so
	// we can construct a resume point after maymorestack for
	// morestack to resume at.
	var pMorestack = s.Func().Text
	if needMoreStack && ctxt.Flag_maymorestack != "" {
		p := pMorestack

		// Save REGCTXT on the stack.
		const tempFrame = 8
		p = appendp(p, AGet, regAddr(REG_SP))
		p = appendp(p, AI32Const, constAddr(tempFrame))

		}
		if height > maxHeight {
			maxHeight = height
		}
	}

	if !ldr.IsNoSplit(sym) {
		// Splittable functions start with a call to
		// morestack, after which their height is 0. Account
		// for the height of the call to morestack.
		addEdge(sc.callSize, sc.morestack)
		return maxHeight, edges
	}

	// This function is nosplit, so it adjusts SP without a split
	// check.
	//

	}
}

//go:noinline
func anotherFunc(n int) {
	// Trigger a stack growth on at least some calls to
	// anotherFunc to test that mayMoreStack is called outside the
	// morestack loop. It's also important that it is called
	// before (not after) morestack, but that's hard to test.
	var x [1 << 10]byte

	if n > 1 {
		anotherFunc(n - 1)
	}

	runtime.KeepAlive(x)

}

type StructF0S1 struct {
	_ uint16
}

// 0 returns 3 params
//go:registerparams
//go:noinline
func Test0(p0 uint32, p1 StructF0S0, p2 int32) {
	// consume some stack space, so as to trigger morestack
	var pad [256]uint64
	pad[FailCount]++
	if p0 == 0 {
		return
	}
	p1f0c := int16(-3096)
	if p1.F0 != p1f0c {
		NoteFailureElem(0, "genChecker0", "parm", 1, 0, pad[0])
		return
	}
	p1f1c := "f6ꂅ8ˋ<"

	"gopanic":            abi.FuncID_gopanic,
	"handleAsyncEvent":   abi.FuncID_handleAsyncEvent,
	"main":               abi.FuncID_runtime_main,
	"mcall":              abi.FuncID_mcall,
	"morestack":          abi.FuncID_morestack,
	"mstart":             abi.FuncID_mstart,
	"panicwrap":          abi.FuncID_panicwrap,
	"runfinq":            abi.FuncID_runfinq,
	"sigpanic":           abi.FuncID_sigpanic,

	// See golang.org/issue/12210.
	if(ctx.uc_stack.ss_size < 1024*1024)
		g->stacklo -= 1024*1024 - ctx.uc_stack.ss_size;

	// Sanity check the results now, rather than getting a
	// morestack on g0 crash.
	if (g->stacklo >= g->stackhi) {
		fatalf("bad stack bounds: lo=%p hi=%p", (void*)(g->stacklo), (void*)(g->stackhi));
	}
}

void
_cgo_sys_thread_start(ThreadStart *ts)
{
	pthread_attr_t attr;

	CALL

	// should never return
	CALL	runtime·abort(SB)
	UNDEF

// Called during function prolog when more stack is needed.
//
// The traceback routines see morestack on a g0 as being
// the top of a stack (for example, morestack calling newstack
// calling the scheduler calling newm calling gc), so we must
// record an argument size. For that purpose, it has no arguments.
TEXT runtime·morestack(SB), NOSPLIT, $0-0

	}
	return n
}

// nosplit to avoid preemption or morestack spilling registers.
//
//go:nosplit
//go:noinline
func testTracebackArgs10(a, b, c, d, e int32) int {
	// no use of any args
	return runtime.Stack(testTracebackArgsBuf[:], false)
}

// norace to avoid race instrumentation changing spill locations.
// nosplit to avoid preemption or morestack spilling registers.
//
//go:norace
//go:nosplit